* [PATCH 0/7] Start deprecating _OSI on new architectures
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <al.stone@linaro.org>
The use of the ACPI _OSI method in Linux has a long and sordid history.
Instead of perpetuating past complications on new architectures, the
consensus amongst those writing the ACPI specification and those using
it seems to be to ultimately deprecate the use of _OSI. I plan to
propose such a change to the ACPI specification in the near future.
In the meantime, these patches rearrange the implementation of _OSI so
that it can be deprecated, or ultimately removed completely, on at least
arm64 platforms. This is done by simply moving the functions implementing
_OSI to arch-dependent locations. For x86, there should be no change
in functionality. For ia64, while it does duplicate some code from x86,
there is no longer any connection to the ACPI blacklist code that is only
used by x86. For arm64, any use of the _OSI method generates a warning
that it has been deprecated, and then always returns false; i.e., that
the capability being queried for, whether OS name or functionality, is
not supported. This is the first six of the patches.
The final patch changes the default value for the _OS_ method for arm64
only. Since there is no need to pretend to be older versions of Windows,
or any other OS at all, the _OS_ method will return "Linux" on arm64.
One can still use the acpi_os_name kernel parameter if there is a need
to use some other value.
Since we are breaking apart code previously shared, I have tried to make
it so that applying the x86 patches alone will continue to compile, at
the expense of breaking the build on non-x86 platforms. However, once
all of the patches are applied, we should be able to compile on all three
architectures. It is best to treat these as one whole.
I have only done simple testing with these patches on arm64 and x86 (AMD
Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
as they should once booted, but this is a very, very small sample of
possible machines. The ia64 patches cross-compile, but I personally have
no way to test them.
The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
NB: some of the patches do not pass checkpatch.pl; the failures I saw were
all part of the original code but are only showing up because that code is
changing location, so I have left them as is. If necessary, they could be
fixed but I was more concerned about the number of changes needed on ia64
and not having any way to test them.
[0] https://lkml.org/lkml/2015/1/14/586
Al Stone (6):
ia64: ACPI: move kernel acpi files to a directory
arm64: ACPI: move kernel acpi files to a directory
x86: ACPI: create arch-dependent version of acpi_osi_handler()
ia64: ACPI: create arch-dependent version of acpi_osi_handler()
arm64: ACPI: create arch-dependent version of acpi_osi_handler()
x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
locations
Hanjun Guo (1):
ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
arch/arm64/Kconfig | 1 +
arch/arm64/kernel/Makefile | 2 +-
arch/arm64/kernel/acpi.c | 359 --------------
arch/arm64/kernel/acpi/Makefile | 1 +
arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
arch/arm64/kernel/acpi/osi.c | 26 +
arch/ia64/kernel/Makefile | 2 +-
arch/ia64/kernel/acpi-ext.c | 104 ----
arch/ia64/kernel/acpi.c | 1000 --------------------------------------
arch/ia64/kernel/acpi/Makefile | 1 +
arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
arch/ia64/kernel/acpi/osi.c | 119 +++++
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
arch/x86/kernel/acpi/boot.c | 5 +-
arch/x86/kernel/acpi/osi.c | 255 ++++++++++
drivers/acpi/Kconfig | 8 +
drivers/acpi/Makefile | 1 -
drivers/acpi/blacklist.c | 323 ------------
drivers/acpi/osl.c | 217 ---------
include/acpi/acconfig.h | 2 +
include/acpi/platform/aclinux.h | 4 +
include/linux/acpi.h | 4 +-
24 files changed, 2215 insertions(+), 2011 deletions(-)
delete mode 100644 arch/arm64/kernel/acpi.c
create mode 100644 arch/arm64/kernel/acpi/Makefile
create mode 100644 arch/arm64/kernel/acpi/acpi.c
create mode 100644 arch/arm64/kernel/acpi/osi.c
delete mode 100644 arch/ia64/kernel/acpi-ext.c
delete mode 100644 arch/ia64/kernel/acpi.c
create mode 100644 arch/ia64/kernel/acpi/Makefile
create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
create mode 100644 arch/ia64/kernel/acpi/acpi.c
create mode 100644 arch/ia64/kernel/acpi/osi.c
create mode 100644 arch/x86/kernel/acpi/blacklist.c
create mode 100644 arch/x86/kernel/acpi/osi.c
delete mode 100644 drivers/acpi/blacklist.c
--
2.1.0
^ permalink raw reply [flat|nested] 41+ messages in thread
* [PATCH 0/7] Start deprecating _OSI on new architectures
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone at linaro.org @ 2015-01-23 0:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Al Stone <al.stone@linaro.org>
The use of the ACPI _OSI method in Linux has a long and sordid history.
Instead of perpetuating past complications on new architectures, the
consensus amongst those writing the ACPI specification and those using
it seems to be to ultimately deprecate the use of _OSI. I plan to
propose such a change to the ACPI specification in the near future.
In the meantime, these patches rearrange the implementation of _OSI so
that it can be deprecated, or ultimately removed completely, on at least
arm64 platforms. This is done by simply moving the functions implementing
_OSI to arch-dependent locations. For x86, there should be no change
in functionality. For ia64, while it does duplicate some code from x86,
there is no longer any connection to the ACPI blacklist code that is only
used by x86. For arm64, any use of the _OSI method generates a warning
that it has been deprecated, and then always returns false; i.e., that
the capability being queried for, whether OS name or functionality, is
not supported. This is the first six of the patches.
The final patch changes the default value for the _OS_ method for arm64
only. Since there is no need to pretend to be older versions of Windows,
or any other OS at all, the _OS_ method will return "Linux" on arm64.
One can still use the acpi_os_name kernel parameter if there is a need
to use some other value.
Since we are breaking apart code previously shared, I have tried to make
it so that applying the x86 patches alone will continue to compile, at
the expense of breaking the build on non-x86 platforms. However, once
all of the patches are applied, we should be able to compile on all three
architectures. It is best to treat these as one whole.
I have only done simple testing with these patches on arm64 and x86 (AMD
Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
as they should once booted, but this is a very, very small sample of
possible machines. The ia64 patches cross-compile, but I personally have
no way to test them.
The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
NB: some of the patches do not pass checkpatch.pl; the failures I saw were
all part of the original code but are only showing up because that code is
changing location, so I have left them as is. If necessary, they could be
fixed but I was more concerned about the number of changes needed on ia64
and not having any way to test them.
[0] https://lkml.org/lkml/2015/1/14/586
Al Stone (6):
ia64: ACPI: move kernel acpi files to a directory
arm64: ACPI: move kernel acpi files to a directory
x86: ACPI: create arch-dependent version of acpi_osi_handler()
ia64: ACPI: create arch-dependent version of acpi_osi_handler()
arm64: ACPI: create arch-dependent version of acpi_osi_handler()
x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
locations
Hanjun Guo (1):
ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
arch/arm64/Kconfig | 1 +
arch/arm64/kernel/Makefile | 2 +-
arch/arm64/kernel/acpi.c | 359 --------------
arch/arm64/kernel/acpi/Makefile | 1 +
arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
arch/arm64/kernel/acpi/osi.c | 26 +
arch/ia64/kernel/Makefile | 2 +-
arch/ia64/kernel/acpi-ext.c | 104 ----
arch/ia64/kernel/acpi.c | 1000 --------------------------------------
arch/ia64/kernel/acpi/Makefile | 1 +
arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
arch/ia64/kernel/acpi/osi.c | 119 +++++
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
arch/x86/kernel/acpi/boot.c | 5 +-
arch/x86/kernel/acpi/osi.c | 255 ++++++++++
drivers/acpi/Kconfig | 8 +
drivers/acpi/Makefile | 1 -
drivers/acpi/blacklist.c | 323 ------------
drivers/acpi/osl.c | 217 ---------
include/acpi/acconfig.h | 2 +
include/acpi/platform/aclinux.h | 4 +
include/linux/acpi.h | 4 +-
24 files changed, 2215 insertions(+), 2011 deletions(-)
delete mode 100644 arch/arm64/kernel/acpi.c
create mode 100644 arch/arm64/kernel/acpi/Makefile
create mode 100644 arch/arm64/kernel/acpi/acpi.c
create mode 100644 arch/arm64/kernel/acpi/osi.c
delete mode 100644 arch/ia64/kernel/acpi-ext.c
delete mode 100644 arch/ia64/kernel/acpi.c
create mode 100644 arch/ia64/kernel/acpi/Makefile
create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
create mode 100644 arch/ia64/kernel/acpi/acpi.c
create mode 100644 arch/ia64/kernel/acpi/osi.c
create mode 100644 arch/x86/kernel/acpi/blacklist.c
create mode 100644 arch/x86/kernel/acpi/osi.c
delete mode 100644 drivers/acpi/blacklist.c
--
2.1.0
^ permalink raw reply [flat|nested] 41+ messages in thread
* [PATCH 0/7] Start deprecating _OSI on new architectures
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <al.stone@linaro.org>
The use of the ACPI _OSI method in Linux has a long and sordid history.
Instead of perpetuating past complications on new architectures, the
consensus amongst those writing the ACPI specification and those using
it seems to be to ultimately deprecate the use of _OSI. I plan to
propose such a change to the ACPI specification in the near future.
In the meantime, these patches rearrange the implementation of _OSI so
that it can be deprecated, or ultimately removed completely, on at least
arm64 platforms. This is done by simply moving the functions implementing
_OSI to arch-dependent locations. For x86, there should be no change
in functionality. For ia64, while it does duplicate some code from x86,
there is no longer any connection to the ACPI blacklist code that is only
used by x86. For arm64, any use of the _OSI method generates a warning
that it has been deprecated, and then always returns false; i.e., that
the capability being queried for, whether OS name or functionality, is
not supported. This is the first six of the patches.
The final patch changes the default value for the _OS_ method for arm64
only. Since there is no need to pretend to be older versions of Windows,
or any other OS at all, the _OS_ method will return "Linux" on arm64.
One can still use the acpi_os_name kernel parameter if there is a need
to use some other value.
Since we are breaking apart code previously shared, I have tried to make
it so that applying the x86 patches alone will continue to compile, at
the expense of breaking the build on non-x86 platforms. However, once
all of the patches are applied, we should be able to compile on all three
architectures. It is best to treat these as one whole.
I have only done simple testing with these patches on arm64 and x86 (AMD
Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
as they should once booted, but this is a very, very small sample of
possible machines. The ia64 patches cross-compile, but I personally have
no way to test them.
The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
NB: some of the patches do not pass checkpatch.pl; the failures I saw were
all part of the original code but are only showing up because that code is
changing location, so I have left them as is. If necessary, they could be
fixed but I was more concerned about the number of changes needed on ia64
and not having any way to test them.
[0] https://lkml.org/lkml/2015/1/14/586
Al Stone (6):
ia64: ACPI: move kernel acpi files to a directory
arm64: ACPI: move kernel acpi files to a directory
x86: ACPI: create arch-dependent version of acpi_osi_handler()
ia64: ACPI: create arch-dependent version of acpi_osi_handler()
arm64: ACPI: create arch-dependent version of acpi_osi_handler()
x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
locations
Hanjun Guo (1):
ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
arch/arm64/Kconfig | 1 +
arch/arm64/kernel/Makefile | 2 +-
arch/arm64/kernel/acpi.c | 359 --------------
arch/arm64/kernel/acpi/Makefile | 1 +
arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
arch/arm64/kernel/acpi/osi.c | 26 +
arch/ia64/kernel/Makefile | 2 +-
arch/ia64/kernel/acpi-ext.c | 104 ----
arch/ia64/kernel/acpi.c | 1000 --------------------------------------
arch/ia64/kernel/acpi/Makefile | 1 +
arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
arch/ia64/kernel/acpi/osi.c | 119 +++++
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
arch/x86/kernel/acpi/boot.c | 5 +-
arch/x86/kernel/acpi/osi.c | 255 ++++++++++
drivers/acpi/Kconfig | 8 +
drivers/acpi/Makefile | 1 -
drivers/acpi/blacklist.c | 323 ------------
drivers/acpi/osl.c | 217 ---------
include/acpi/acconfig.h | 2 +
include/acpi/platform/aclinux.h | 4 +
include/linux/acpi.h | 4 +-
24 files changed, 2215 insertions(+), 2011 deletions(-)
delete mode 100644 arch/arm64/kernel/acpi.c
create mode 100644 arch/arm64/kernel/acpi/Makefile
create mode 100644 arch/arm64/kernel/acpi/acpi.c
create mode 100644 arch/arm64/kernel/acpi/osi.c
delete mode 100644 arch/ia64/kernel/acpi-ext.c
delete mode 100644 arch/ia64/kernel/acpi.c
create mode 100644 arch/ia64/kernel/acpi/Makefile
create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
create mode 100644 arch/ia64/kernel/acpi/acpi.c
create mode 100644 arch/ia64/kernel/acpi/osi.c
create mode 100644 arch/x86/kernel/acpi/blacklist.c
create mode 100644 arch/x86/kernel/acpi/osi.c
delete mode 100644 drivers/acpi/blacklist.c
--
2.1.0
^ permalink raw reply [flat|nested] 41+ messages in thread
* [PATCH 1/7] ia64: ACPI: move kernel acpi files to a directory
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 0:44 ` al.stone at linaro.org
-1 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In preparation for adding some additional arch-dependent ACPI files,
move the existing ones to a directory to try to keep clutter down in
the arch/ia64/kernel directory.
There is no functional change. This patch only moves source files.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/ia64/kernel/Makefile | 2 +-
arch/ia64/kernel/acpi-ext.c | 104 ----
arch/ia64/kernel/acpi.c | 1000 --------------------------------------
arch/ia64/kernel/acpi/Makefile | 1 +
arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
6 files changed, 1106 insertions(+), 1105 deletions(-)
delete mode 100644 arch/ia64/kernel/acpi-ext.c
delete mode 100644 arch/ia64/kernel/acpi.c
create mode 100644 arch/ia64/kernel/acpi/Makefile
create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
create mode 100644 arch/ia64/kernel/acpi/acpi.c
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 20678a9..2218842 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -13,7 +13,7 @@ obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64
salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
unwind.o mca.o mca_asm.o topology.o dma-mapping.o
-obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
+obj-y += acpi/
obj-$(CONFIG_IA64_BRL_EMU) += brl_emu.o
obj-$(CONFIG_IA64_PALINFO) += palinfo.o
diff --git a/arch/ia64/kernel/acpi-ext.c b/arch/ia64/kernel/acpi-ext.c
deleted file mode 100644
index 8b9318d..0000000
--- a/arch/ia64/kernel/acpi-ext.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P.
- * Alex Williamson <alex.williamson@hp.com>
- * Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/acpi.h>
-
-#include <asm/acpi-ext.h>
-
-/*
- * Device CSRs that do not appear in PCI config space should be described
- * via ACPI. This would normally be done with Address Space Descriptors
- * marked as "consumer-only," but old versions of Windows and Linux ignore
- * the producer/consumer flag, so HP invented a vendor-defined resource to
- * describe the location and size of CSR space.
- */
-
-struct acpi_vendor_uuid hp_ccsr_uuid = {
- .subtype = 2,
- .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
- 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
-};
-
-static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)
-{
- acpi_status status;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- struct acpi_resource *resource;
- struct acpi_resource_vendor_typed *vendor;
-
- status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS, &hp_ccsr_uuid,
- &buffer);
-
- resource = buffer.pointer;
- vendor = &resource->data.vendor_typed;
-
- if (ACPI_FAILURE(status) || vendor->byte_length < 16) {
- status = AE_NOT_FOUND;
- goto exit;
- }
-
- memcpy(base, vendor->byte_data, sizeof(*base));
- memcpy(length, vendor->byte_data + 8, sizeof(*length));
-
- exit:
- kfree(buffer.pointer);
- return status;
-}
-
-struct csr_space {
- u64 base;
- u64 length;
-};
-
-static acpi_status find_csr_space(struct acpi_resource *resource, void *data)
-{
- struct csr_space *space = data;
- struct acpi_resource_address64 addr;
- acpi_status status;
-
- status = acpi_resource_to_address64(resource, &addr);
- if (ACPI_SUCCESS(status) &&
- addr.resource_type == ACPI_MEMORY_RANGE &&
- addr.address_length &&
- addr.producer_consumer == ACPI_CONSUMER) {
- space->base = addr.minimum;
- space->length = addr.address_length;
- return AE_CTRL_TERMINATE;
- }
- return AE_OK; /* keep looking */
-}
-
-static acpi_status hp_crs_locate(acpi_handle obj, u64 *base, u64 *length)
-{
- struct csr_space space = { 0, 0 };
-
- acpi_walk_resources(obj, METHOD_NAME__CRS, find_csr_space, &space);
- if (!space.length)
- return AE_NOT_FOUND;
-
- *base = space.base;
- *length = space.length;
- return AE_OK;
-}
-
-acpi_status hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
-{
- acpi_status status;
-
- status = hp_ccsr_locate(obj, csr_base, csr_length);
- if (ACPI_SUCCESS(status))
- return status;
-
- return hp_crs_locate(obj, csr_base, csr_length);
-}
-EXPORT_SYMBOL(hp_acpi_csr_space);
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
deleted file mode 100644
index e795cb8..0000000
--- a/arch/ia64/kernel/acpi.c
+++ /dev/null
@@ -1,1000 +0,0 @@
-/*
- * acpi.c - Architecture-Specific Low-Level ACPI Support
- *
- * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
- * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
- * David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 2000 Intel Corp.
- * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
- * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
- * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
- * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
- * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
- * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/irq.h>
-#include <linux/acpi.h>
-#include <linux/efi.h>
-#include <linux/mmzone.h>
-#include <linux/nodemask.h>
-#include <linux/slab.h>
-#include <acpi/processor.h>
-#include <asm/io.h>
-#include <asm/iosapic.h>
-#include <asm/machvec.h>
-#include <asm/page.h>
-#include <asm/numa.h>
-#include <asm/sal.h>
-#include <asm/cyclone.h>
-
-#define PREFIX "ACPI: "
-
-int acpi_lapic;
-unsigned int acpi_cpei_override;
-unsigned int acpi_cpei_phys_cpuid;
-
-unsigned long acpi_wakeup_address = 0;
-
-#ifdef CONFIG_IA64_GENERIC
-static unsigned long __init acpi_find_rsdp(void)
-{
- unsigned long rsdp_phys = 0;
-
- if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
- rsdp_phys = efi.acpi20;
- else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
- printk(KERN_WARNING PREFIX
- "v1.0/r0.71 tables no longer supported\n");
- return rsdp_phys;
-}
-
-const char __init *
-acpi_get_sysname(void)
-{
- unsigned long rsdp_phys;
- struct acpi_table_rsdp *rsdp;
- struct acpi_table_xsdt *xsdt;
- struct acpi_table_header *hdr;
-#ifdef CONFIG_INTEL_IOMMU
- u64 i, nentries;
-#endif
-
- rsdp_phys = acpi_find_rsdp();
- if (!rsdp_phys) {
- printk(KERN_ERR
- "ACPI 2.0 RSDP not found, default to \"dig\"\n");
- return "dig";
- }
-
- rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys);
- if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
- printk(KERN_ERR
- "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
- return "dig";
- }
-
- xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
- hdr = &xsdt->header;
- if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) {
- printk(KERN_ERR
- "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
- return "dig";
- }
-
- if (!strcmp(hdr->oem_id, "HP")) {
- return "hpzx1";
- } else if (!strcmp(hdr->oem_id, "SGI")) {
- if (!strcmp(hdr->oem_table_id + 4, "UV"))
- return "uv";
- else
- return "sn2";
- }
-
-#ifdef CONFIG_INTEL_IOMMU
- /* Look for Intel IOMMU */
- nentries = (hdr->length - sizeof(*hdr)) /
- sizeof(xsdt->table_offset_entry[0]);
- for (i = 0; i < nentries; i++) {
- hdr = __va(xsdt->table_offset_entry[i]);
- if (strncmp(hdr->signature, ACPI_SIG_DMAR,
- sizeof(ACPI_SIG_DMAR) - 1) == 0)
- return "dig_vtd";
- }
-#endif
-
- return "dig";
-}
-#endif /* CONFIG_IA64_GENERIC */
-
-#define ACPI_MAX_PLATFORM_INTERRUPTS 256
-
-/* Array to record platform interrupt vectors for generic interrupt routing. */
-int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
- [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
-};
-
-enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
-
-/*
- * Interrupt routing API for device drivers. Provides interrupt vector for
- * a generic platform event. Currently only CPEI is implemented.
- */
-int acpi_request_vector(u32 int_type)
-{
- int vector = -1;
-
- if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
- /* corrected platform error interrupt */
- vector = platform_intr_list[int_type];
- } else
- printk(KERN_ERR
- "acpi_request_vector(): invalid interrupt type\n");
- return vector;
-}
-
-char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
-{
- return __va(phys_addr);
-}
-
-void __init __acpi_unmap_table(char *map, unsigned long size)
-{
-}
-
-/* --------------------------------------------------------------------------
- Boot-time Table Parsing
- -------------------------------------------------------------------------- */
-
-static int available_cpus __initdata;
-struct acpi_table_madt *acpi_madt __initdata;
-static u8 has_8259;
-
-static int __init
-acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_local_apic_override *lapic;
-
- lapic = (struct acpi_madt_local_apic_override *)header;
-
- if (BAD_MADT_ENTRY(lapic, end))
- return -EINVAL;
-
- if (lapic->address) {
- iounmap(ipi_base_addr);
- ipi_base_addr = ioremap(lapic->address, 0);
- }
- return 0;
-}
-
-static int __init
-acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_local_sapic *lsapic;
-
- lsapic = (struct acpi_madt_local_sapic *)header;
-
- /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */
-
- if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
-#ifdef CONFIG_SMP
- smp_boot_data.cpu_phys_id[available_cpus] =
- (lsapic->id << 8) | lsapic->eid;
-#endif
- ++available_cpus;
- }
-
- total_cpus++;
- return 0;
-}
-
-static int __init
-acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_local_apic_nmi *lacpi_nmi;
-
- lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header;
-
- if (BAD_MADT_ENTRY(lacpi_nmi, end))
- return -EINVAL;
-
- /* TBD: Support lapic_nmi entries */
- return 0;
-}
-
-static int __init
-acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_io_sapic *iosapic;
-
- iosapic = (struct acpi_madt_io_sapic *)header;
-
- if (BAD_MADT_ENTRY(iosapic, end))
- return -EINVAL;
-
- return iosapic_init(iosapic->address, iosapic->global_irq_base);
-}
-
-static unsigned int __initdata acpi_madt_rev;
-
-static int __init
-acpi_parse_plat_int_src(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_interrupt_source *plintsrc;
- int vector;
-
- plintsrc = (struct acpi_madt_interrupt_source *)header;
-
- if (BAD_MADT_ENTRY(plintsrc, end))
- return -EINVAL;
-
- /*
- * Get vector assignment for this interrupt, set attributes,
- * and program the IOSAPIC routing table.
- */
- vector = iosapic_register_platform_intr(plintsrc->type,
- plintsrc->global_irq,
- plintsrc->io_sapic_vector,
- plintsrc->eid,
- plintsrc->id,
- ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) ==
- ACPI_MADT_POLARITY_ACTIVE_HIGH) ?
- IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
- ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
- ACPI_MADT_TRIGGER_EDGE) ?
- IOSAPIC_EDGE : IOSAPIC_LEVEL);
-
- platform_intr_list[plintsrc->type] = vector;
- if (acpi_madt_rev > 1) {
- acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;
- }
-
- /*
- * Save the physical id, so we can check when its being removed
- */
- acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
-
- return 0;
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-unsigned int can_cpei_retarget(void)
-{
- extern int cpe_vector;
- extern unsigned int force_cpei_retarget;
-
- /*
- * Only if CPEI is supported and the override flag
- * is present, otherwise return that its re-targettable
- * if we are in polling mode.
- */
- if (cpe_vector > 0) {
- if (acpi_cpei_override || force_cpei_retarget)
- return 1;
- else
- return 0;
- }
- return 1;
-}
-
-unsigned int is_cpu_cpei_target(unsigned int cpu)
-{
- unsigned int logical_id;
-
- logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
-
- if (logical_id == cpu)
- return 1;
- else
- return 0;
-}
-
-void set_cpei_target_cpu(unsigned int cpu)
-{
- acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
-}
-#endif
-
-unsigned int get_cpei_target_cpu(void)
-{
- return acpi_cpei_phys_cpuid;
-}
-
-static int __init
-acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_interrupt_override *p;
-
- p = (struct acpi_madt_interrupt_override *)header;
-
- if (BAD_MADT_ENTRY(p, end))
- return -EINVAL;
-
- iosapic_override_isa_irq(p->source_irq, p->global_irq,
- ((p->inti_flags & ACPI_MADT_POLARITY_MASK) ==
- ACPI_MADT_POLARITY_ACTIVE_LOW) ?
- IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH,
- ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
- ACPI_MADT_TRIGGER_LEVEL) ?
- IOSAPIC_LEVEL : IOSAPIC_EDGE);
- return 0;
-}
-
-static int __init
-acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_nmi_source *nmi_src;
-
- nmi_src = (struct acpi_madt_nmi_source *)header;
-
- if (BAD_MADT_ENTRY(nmi_src, end))
- return -EINVAL;
-
- /* TBD: Support nimsrc entries */
- return 0;
-}
-
-static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
-{
- if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) {
-
- /*
- * Unfortunately ITC_DRIFT is not yet part of the
- * official SAL spec, so the ITC_DRIFT bit is not
- * set by the BIOS on this hardware.
- */
- sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
-
- cyclone_setup();
- }
-}
-
-static int __init acpi_parse_madt(struct acpi_table_header *table)
-{
- if (!table)
- return -EINVAL;
-
- acpi_madt = (struct acpi_table_madt *)table;
-
- acpi_madt_rev = acpi_madt->header.revision;
-
- /* remember the value for reference after free_initmem() */
-#ifdef CONFIG_ITANIUM
- has_8259 = 1; /* Firmware on old Itanium systems is broken */
-#else
- has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT;
-#endif
- iosapic_system_init(has_8259);
-
- /* Get base address of IPI Message Block */
-
- if (acpi_madt->address)
- ipi_base_addr = ioremap(acpi_madt->address, 0);
-
- printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
-
- acpi_madt_oem_check(acpi_madt->header.oem_id,
- acpi_madt->header.oem_table_id);
-
- return 0;
-}
-
-#ifdef CONFIG_ACPI_NUMA
-
-#undef SLIT_DEBUG
-
-#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
-
-static int __initdata srat_num_cpus; /* number of cpus */
-static u32 pxm_flag[PXM_FLAG_LEN];
-#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
-#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
-static struct acpi_table_slit __initdata *slit_table;
-cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
-
-static int __init
-get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
-{
- int pxm;
-
- pxm = pa->proximity_domain_lo;
- if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
- pxm += pa->proximity_domain_hi[0] << 8;
- return pxm;
-}
-
-static int __init
-get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
-{
- int pxm;
-
- pxm = ma->proximity_domain;
- if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
- pxm &= 0xff;
-
- return pxm;
-}
-
-/*
- * ACPI 2.0 SLIT (System Locality Information Table)
- * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
- */
-void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
-{
- u32 len;
-
- len = sizeof(struct acpi_table_header) + 8
- + slit->locality_count * slit->locality_count;
- if (slit->header.length != len) {
- printk(KERN_ERR
- "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
- len, slit->header.length);
- return;
- }
- slit_table = slit;
-}
-
-void __init
-acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
-{
- int pxm;
-
- if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
- return;
-
- if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
- printk_once(KERN_WARNING
- "node_cpuid[%ld] is too small, may not be able to use all cpus\n",
- ARRAY_SIZE(node_cpuid));
- return;
- }
- pxm = get_processor_proximity_domain(pa);
-
- /* record this node in proximity bitmap */
- pxm_bit_set(pxm);
-
- node_cpuid[srat_num_cpus].phys_id =
- (pa->apic_id << 8) | (pa->local_sapic_eid);
- /* nid should be overridden as logical node id later */
- node_cpuid[srat_num_cpus].nid = pxm;
- cpu_set(srat_num_cpus, early_cpu_possible_map);
- srat_num_cpus++;
-}
-
-int __init
-acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
-{
- unsigned long paddr, size;
- int pxm;
- struct node_memblk_s *p, *q, *pend;
-
- pxm = get_memory_proximity_domain(ma);
-
- /* fill node memory chunk structure */
- paddr = ma->base_address;
- size = ma->length;
-
- /* Ignore disabled entries */
- if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
- return -1;
-
- /* record this node in proximity bitmap */
- pxm_bit_set(pxm);
-
- /* Insertion sort based on base address */
- pend = &node_memblk[num_node_memblks];
- for (p = &node_memblk[0]; p < pend; p++) {
- if (paddr < p->start_paddr)
- break;
- }
- if (p < pend) {
- for (q = pend - 1; q >= p; q--)
- *(q + 1) = *q;
- }
- p->start_paddr = paddr;
- p->size = size;
- p->nid = pxm;
- num_node_memblks++;
- return 0;
-}
-
-void __init acpi_numa_arch_fixup(void)
-{
- int i, j, node_from, node_to;
-
- /* If there's no SRAT, fix the phys_id and mark node 0 online */
- if (srat_num_cpus == 0) {
- node_set_online(0);
- node_cpuid[0].phys_id = hard_smp_processor_id();
- return;
- }
-
- /*
- * MCD - This can probably be dropped now. No need for pxm ID to node ID
- * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
- */
- nodes_clear(node_online_map);
- for (i = 0; i < MAX_PXM_DOMAINS; i++) {
- if (pxm_bit_test(i)) {
- int nid = acpi_map_pxm_to_node(i);
- node_set_online(nid);
- }
- }
-
- /* set logical node id in memory chunk structure */
- for (i = 0; i < num_node_memblks; i++)
- node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
-
- /* assign memory bank numbers for each chunk on each node */
- for_each_online_node(i) {
- int bank;
-
- bank = 0;
- for (j = 0; j < num_node_memblks; j++)
- if (node_memblk[j].nid == i)
- node_memblk[j].bank = bank++;
- }
-
- /* set logical node id in cpu structure */
- for_each_possible_early_cpu(i)
- node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
-
- printk(KERN_INFO "Number of logical nodes in system = %d\n",
- num_online_nodes());
- printk(KERN_INFO "Number of memory chunks in system = %d\n",
- num_node_memblks);
-
- if (!slit_table) {
- for (i = 0; i < MAX_NUMNODES; i++)
- for (j = 0; j < MAX_NUMNODES; j++)
- node_distance(i, j) = i == j ? LOCAL_DISTANCE :
- REMOTE_DISTANCE;
- return;
- }
-
- memset(numa_slit, -1, sizeof(numa_slit));
- for (i = 0; i < slit_table->locality_count; i++) {
- if (!pxm_bit_test(i))
- continue;
- node_from = pxm_to_node(i);
- for (j = 0; j < slit_table->locality_count; j++) {
- if (!pxm_bit_test(j))
- continue;
- node_to = pxm_to_node(j);
- node_distance(node_from, node_to) =
- slit_table->entry[i * slit_table->locality_count + j];
- }
- }
-
-#ifdef SLIT_DEBUG
- printk("ACPI 2.0 SLIT locality table:\n");
- for_each_online_node(i) {
- for_each_online_node(j)
- printk("%03d ", node_distance(i, j));
- printk("\n");
- }
-#endif
-}
-#endif /* CONFIG_ACPI_NUMA */
-
-/*
- * success: return IRQ number (>=0)
- * failure: return < 0
- */
-int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
-{
- if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
- return gsi;
-
- if (has_8259 && gsi < 16)
- return isa_irq_to_vector(gsi);
-
- return iosapic_register_intr(gsi,
- (polarity ==
- ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
- IOSAPIC_POL_LOW,
- (triggering ==
- ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
- IOSAPIC_LEVEL);
-}
-EXPORT_SYMBOL_GPL(acpi_register_gsi);
-
-void acpi_unregister_gsi(u32 gsi)
-{
- if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
- return;
-
- if (has_8259 && gsi < 16)
- return;
-
- iosapic_unregister_intr(gsi);
-}
-EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
-
-static int __init acpi_parse_fadt(struct acpi_table_header *table)
-{
- struct acpi_table_header *fadt_header;
- struct acpi_table_fadt *fadt;
-
- if (!table)
- return -EINVAL;
-
- fadt_header = (struct acpi_table_header *)table;
- if (fadt_header->revision != 3)
- return -ENODEV; /* Only deal with ACPI 2.0 FADT */
-
- fadt = (struct acpi_table_fadt *)fadt_header;
-
- acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
- ACPI_ACTIVE_LOW);
- return 0;
-}
-
-int __init early_acpi_boot_init(void)
-{
- int ret;
-
- /*
- * do a partial walk of MADT to determine how many CPUs
- * we have including offline CPUs
- */
- if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
- printk(KERN_ERR PREFIX "Can't find MADT\n");
- return 0;
- }
-
- ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
- acpi_parse_lsapic, NR_CPUS);
- if (ret < 1)
- printk(KERN_ERR PREFIX
- "Error parsing MADT - no LAPIC entries\n");
- else
- acpi_lapic = 1;
-
-#ifdef CONFIG_SMP
- if (available_cpus == 0) {
- printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
- printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
- smp_boot_data.cpu_phys_id[available_cpus] =
- hard_smp_processor_id();
- available_cpus = 1; /* We've got at least one of these, no? */
- }
- smp_boot_data.cpu_count = available_cpus;
-#endif
- /* Make boot-up look pretty */
- printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
- total_cpus);
-
- return 0;
-}
-
-int __init acpi_boot_init(void)
-{
-
- /*
- * MADT
- * ----
- * Parse the Multiple APIC Description Table (MADT), if exists.
- * Note that this table provides platform SMP configuration
- * information -- the successor to MPS tables.
- */
-
- if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
- printk(KERN_ERR PREFIX "Can't find MADT\n");
- goto skip_madt;
- }
-
- /* Local APIC */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing LAPIC address override entry\n");
-
- if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0)
- < 0)
- printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
-
- /* I/O APIC */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) {
- if (!ia64_platform_is("sn2"))
- printk(KERN_ERR PREFIX
- "Error parsing MADT - no IOSAPIC entries\n");
- }
-
- /* System-Level Interrupt Routing */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src,
- ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing platform interrupt source entry\n");
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing interrupt source overrides entry\n");
-
- if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0)
- printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
- skip_madt:
-
- /*
- * FADT says whether a legacy keyboard controller is present.
- * The FADT also contains an SCI_INT line, by which the system
- * gets interrupts such as power and sleep buttons. If it's not
- * on a Legacy interrupt, it needs to be setup.
- */
- if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
- printk(KERN_ERR PREFIX "Can't find FADT\n");
-
-#ifdef CONFIG_ACPI_NUMA
-#ifdef CONFIG_SMP
- if (srat_num_cpus == 0) {
- int cpu, i = 1;
- for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
- if (smp_boot_data.cpu_phys_id[cpu] !=
- hard_smp_processor_id())
- node_cpuid[i++].phys_id =
- smp_boot_data.cpu_phys_id[cpu];
- }
-#endif
- build_cpu_to_node_map();
-#endif
- return 0;
-}
-
-int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
-{
- int tmp;
-
- if (has_8259 && gsi < 16)
- *irq = isa_irq_to_vector(gsi);
- else {
- tmp = gsi_to_irq(gsi);
- if (tmp == -1)
- return -1;
- *irq = tmp;
- }
- return 0;
-}
-
-int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
-{
- if (isa_irq >= 16)
- return -1;
- *gsi = isa_irq;
- return 0;
-}
-
-/*
- * ACPI based hotplug CPU support
- */
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
-static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
-{
-#ifdef CONFIG_ACPI_NUMA
- /*
- * We don't have cpu-only-node hotadd. But if the system equips
- * SRAT table, pxm is already found and node is ready.
- * So, just pxm_to_nid(pxm) is OK.
- * This code here is for the system which doesn't have full SRAT
- * table for possible cpus.
- */
- node_cpuid[cpu].phys_id = physid;
- node_cpuid[cpu].nid = acpi_get_node(handle);
-#endif
- return 0;
-}
-
-int additional_cpus __initdata = -1;
-
-static __init int setup_additional_cpus(char *s)
-{
- if (s)
- additional_cpus = simple_strtol(s, NULL, 0);
-
- return 0;
-}
-
-early_param("additional_cpus", setup_additional_cpus);
-
-/*
- * cpu_possible_mask should be static, it cannot change as CPUs
- * are onlined, or offlined. The reason is per-cpu data-structures
- * are allocated by some modules at init time, and dont expect to
- * do this dynamically on cpu arrival/departure.
- * cpu_present_mask on the other hand can change dynamically.
- * In case when cpu_hotplug is not compiled, then we resort to current
- * behaviour, which is cpu_possible == cpu_present.
- * - Ashok Raj
- *
- * Three ways to find out the number of additional hotplug CPUs:
- * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
- * - The user can overwrite it with additional_cpus=NUM
- * - Otherwise don't reserve additional CPUs.
- */
-__init void prefill_possible_map(void)
-{
- int i;
- int possible, disabled_cpus;
-
- disabled_cpus = total_cpus - available_cpus;
-
- if (additional_cpus == -1) {
- if (disabled_cpus > 0)
- additional_cpus = disabled_cpus;
- else
- additional_cpus = 0;
- }
-
- possible = available_cpus + additional_cpus;
-
- if (possible > nr_cpu_ids)
- possible = nr_cpu_ids;
-
- printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
- possible, max((possible - available_cpus), 0));
-
- for (i = 0; i < possible; i++)
- set_cpu_possible(i, true);
-}
-
-static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
-{
- cpumask_t tmp_map;
- int cpu;
-
- cpumask_complement(&tmp_map, cpu_present_mask);
- cpu = cpumask_first(&tmp_map);
- if (cpu >= nr_cpu_ids)
- return -EINVAL;
-
- acpi_map_cpu2node(handle, cpu, physid);
-
- set_cpu_present(cpu, true);
- ia64_cpu_to_sapicid[cpu] = physid;
-
- acpi_processor_set_pdc(handle);
-
- *pcpu = cpu;
- return (0);
-}
-
-/* wrapper to silence section mismatch warning */
-int __ref acpi_map_cpu(acpi_handle handle, int physid, int *pcpu)
-{
- return _acpi_map_lsapic(handle, physid, pcpu);
-}
-EXPORT_SYMBOL(acpi_map_cpu);
-
-int acpi_unmap_cpu(int cpu)
-{
- ia64_cpu_to_sapicid[cpu] = -1;
- set_cpu_present(cpu, false);
-
-#ifdef CONFIG_ACPI_NUMA
- /* NUMA specific cleanup's */
-#endif
-
- return (0);
-}
-EXPORT_SYMBOL(acpi_unmap_cpu);
-#endif /* CONFIG_ACPI_HOTPLUG_CPU */
-
-#ifdef CONFIG_ACPI_NUMA
-static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth,
- void *context, void **ret)
-{
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *obj;
- struct acpi_madt_io_sapic *iosapic;
- unsigned int gsi_base;
- int node;
-
- /* Only care about objects w/ a method that returns the MADT */
- if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
- return AE_OK;
-
- if (!buffer.length || !buffer.pointer)
- return AE_OK;
-
- obj = buffer.pointer;
- if (obj->type != ACPI_TYPE_BUFFER ||
- obj->buffer.length < sizeof(*iosapic)) {
- kfree(buffer.pointer);
- return AE_OK;
- }
-
- iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
-
- if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
- kfree(buffer.pointer);
- return AE_OK;
- }
-
- gsi_base = iosapic->global_irq_base;
-
- kfree(buffer.pointer);
-
- /* OK, it's an IOSAPIC MADT entry; associate it with a node */
- node = acpi_get_node(handle);
- if (node == NUMA_NO_NODE || !node_online(node) ||
- cpumask_empty(cpumask_of_node(node)))
- return AE_OK;
-
- /* We know a gsi to node mapping! */
- map_iosapic_to_node(gsi_base, node);
- return AE_OK;
-}
-
-static int __init
-acpi_map_iosapics (void)
-{
- acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
- return 0;
-}
-
-fs_initcall(acpi_map_iosapics);
-#endif /* CONFIG_ACPI_NUMA */
-
-int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
-{
- int err;
-
- if ((err = iosapic_init(phys_addr, gsi_base)))
- return err;
-
-#ifdef CONFIG_ACPI_NUMA
- acpi_map_iosapic(handle, 0, NULL, NULL);
-#endif /* CONFIG_ACPI_NUMA */
-
- return 0;
-}
-
-EXPORT_SYMBOL(acpi_register_ioapic);
-
-int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
-{
- return iosapic_remove(gsi_base);
-}
-
-EXPORT_SYMBOL(acpi_unregister_ioapic);
-
-/*
- * acpi_suspend_lowlevel() - save kernel state and suspend.
- *
- * TBD when when IA64 starts to support suspend...
- */
-int acpi_suspend_lowlevel(void) { return 0; }
diff --git a/arch/ia64/kernel/acpi/Makefile b/arch/ia64/kernel/acpi/Makefile
new file mode 100644
index 0000000..8c12745
--- /dev/null
+++ b/arch/ia64/kernel/acpi/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
diff --git a/arch/ia64/kernel/acpi/acpi-ext.c b/arch/ia64/kernel/acpi/acpi-ext.c
new file mode 100644
index 0000000..8b9318d
--- /dev/null
+++ b/arch/ia64/kernel/acpi/acpi-ext.c
@@ -0,0 +1,104 @@
+/*
+ * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P.
+ * Alex Williamson <alex.williamson@hp.com>
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+
+#include <asm/acpi-ext.h>
+
+/*
+ * Device CSRs that do not appear in PCI config space should be described
+ * via ACPI. This would normally be done with Address Space Descriptors
+ * marked as "consumer-only," but old versions of Windows and Linux ignore
+ * the producer/consumer flag, so HP invented a vendor-defined resource to
+ * describe the location and size of CSR space.
+ */
+
+struct acpi_vendor_uuid hp_ccsr_uuid = {
+ .subtype = 2,
+ .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
+ 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
+};
+
+static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)
+{
+ acpi_status status;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_resource *resource;
+ struct acpi_resource_vendor_typed *vendor;
+
+ status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS, &hp_ccsr_uuid,
+ &buffer);
+
+ resource = buffer.pointer;
+ vendor = &resource->data.vendor_typed;
+
+ if (ACPI_FAILURE(status) || vendor->byte_length < 16) {
+ status = AE_NOT_FOUND;
+ goto exit;
+ }
+
+ memcpy(base, vendor->byte_data, sizeof(*base));
+ memcpy(length, vendor->byte_data + 8, sizeof(*length));
+
+ exit:
+ kfree(buffer.pointer);
+ return status;
+}
+
+struct csr_space {
+ u64 base;
+ u64 length;
+};
+
+static acpi_status find_csr_space(struct acpi_resource *resource, void *data)
+{
+ struct csr_space *space = data;
+ struct acpi_resource_address64 addr;
+ acpi_status status;
+
+ status = acpi_resource_to_address64(resource, &addr);
+ if (ACPI_SUCCESS(status) &&
+ addr.resource_type == ACPI_MEMORY_RANGE &&
+ addr.address_length &&
+ addr.producer_consumer == ACPI_CONSUMER) {
+ space->base = addr.minimum;
+ space->length = addr.address_length;
+ return AE_CTRL_TERMINATE;
+ }
+ return AE_OK; /* keep looking */
+}
+
+static acpi_status hp_crs_locate(acpi_handle obj, u64 *base, u64 *length)
+{
+ struct csr_space space = { 0, 0 };
+
+ acpi_walk_resources(obj, METHOD_NAME__CRS, find_csr_space, &space);
+ if (!space.length)
+ return AE_NOT_FOUND;
+
+ *base = space.base;
+ *length = space.length;
+ return AE_OK;
+}
+
+acpi_status hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
+{
+ acpi_status status;
+
+ status = hp_ccsr_locate(obj, csr_base, csr_length);
+ if (ACPI_SUCCESS(status))
+ return status;
+
+ return hp_crs_locate(obj, csr_base, csr_length);
+}
+EXPORT_SYMBOL(hp_acpi_csr_space);
diff --git a/arch/ia64/kernel/acpi/acpi.c b/arch/ia64/kernel/acpi/acpi.c
new file mode 100644
index 0000000..e795cb8
--- /dev/null
+++ b/arch/ia64/kernel/acpi/acpi.c
@@ -0,0 +1,1000 @@
+/*
+ * acpi.c - Architecture-Specific Low-Level ACPI Support
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
+ * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2000 Intel Corp.
+ * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
+ * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
+ * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
+ * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
+ * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+#include <linux/acpi.h>
+#include <linux/efi.h>
+#include <linux/mmzone.h>
+#include <linux/nodemask.h>
+#include <linux/slab.h>
+#include <acpi/processor.h>
+#include <asm/io.h>
+#include <asm/iosapic.h>
+#include <asm/machvec.h>
+#include <asm/page.h>
+#include <asm/numa.h>
+#include <asm/sal.h>
+#include <asm/cyclone.h>
+
+#define PREFIX "ACPI: "
+
+int acpi_lapic;
+unsigned int acpi_cpei_override;
+unsigned int acpi_cpei_phys_cpuid;
+
+unsigned long acpi_wakeup_address = 0;
+
+#ifdef CONFIG_IA64_GENERIC
+static unsigned long __init acpi_find_rsdp(void)
+{
+ unsigned long rsdp_phys = 0;
+
+ if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+ rsdp_phys = efi.acpi20;
+ else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+ printk(KERN_WARNING PREFIX
+ "v1.0/r0.71 tables no longer supported\n");
+ return rsdp_phys;
+}
+
+const char __init *
+acpi_get_sysname(void)
+{
+ unsigned long rsdp_phys;
+ struct acpi_table_rsdp *rsdp;
+ struct acpi_table_xsdt *xsdt;
+ struct acpi_table_header *hdr;
+#ifdef CONFIG_INTEL_IOMMU
+ u64 i, nentries;
+#endif
+
+ rsdp_phys = acpi_find_rsdp();
+ if (!rsdp_phys) {
+ printk(KERN_ERR
+ "ACPI 2.0 RSDP not found, default to \"dig\"\n");
+ return "dig";
+ }
+
+ rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys);
+ if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
+ printk(KERN_ERR
+ "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
+ hdr = &xsdt->header;
+ if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) {
+ printk(KERN_ERR
+ "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ if (!strcmp(hdr->oem_id, "HP")) {
+ return "hpzx1";
+ } else if (!strcmp(hdr->oem_id, "SGI")) {
+ if (!strcmp(hdr->oem_table_id + 4, "UV"))
+ return "uv";
+ else
+ return "sn2";
+ }
+
+#ifdef CONFIG_INTEL_IOMMU
+ /* Look for Intel IOMMU */
+ nentries = (hdr->length - sizeof(*hdr)) /
+ sizeof(xsdt->table_offset_entry[0]);
+ for (i = 0; i < nentries; i++) {
+ hdr = __va(xsdt->table_offset_entry[i]);
+ if (strncmp(hdr->signature, ACPI_SIG_DMAR,
+ sizeof(ACPI_SIG_DMAR) - 1) == 0)
+ return "dig_vtd";
+ }
+#endif
+
+ return "dig";
+}
+#endif /* CONFIG_IA64_GENERIC */
+
+#define ACPI_MAX_PLATFORM_INTERRUPTS 256
+
+/* Array to record platform interrupt vectors for generic interrupt routing. */
+int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
+ [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
+};
+
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
+
+/*
+ * Interrupt routing API for device drivers. Provides interrupt vector for
+ * a generic platform event. Currently only CPEI is implemented.
+ */
+int acpi_request_vector(u32 int_type)
+{
+ int vector = -1;
+
+ if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
+ /* corrected platform error interrupt */
+ vector = platform_intr_list[int_type];
+ } else
+ printk(KERN_ERR
+ "acpi_request_vector(): invalid interrupt type\n");
+ return vector;
+}
+
+char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
+{
+ return __va(phys_addr);
+}
+
+void __init __acpi_unmap_table(char *map, unsigned long size)
+{
+}
+
+/* --------------------------------------------------------------------------
+ Boot-time Table Parsing
+ -------------------------------------------------------------------------- */
+
+static int available_cpus __initdata;
+struct acpi_table_madt *acpi_madt __initdata;
+static u8 has_8259;
+
+static int __init
+acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_local_apic_override *lapic;
+
+ lapic = (struct acpi_madt_local_apic_override *)header;
+
+ if (BAD_MADT_ENTRY(lapic, end))
+ return -EINVAL;
+
+ if (lapic->address) {
+ iounmap(ipi_base_addr);
+ ipi_base_addr = ioremap(lapic->address, 0);
+ }
+ return 0;
+}
+
+static int __init
+acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_local_sapic *lsapic;
+
+ lsapic = (struct acpi_madt_local_sapic *)header;
+
+ /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */
+
+ if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
+#ifdef CONFIG_SMP
+ smp_boot_data.cpu_phys_id[available_cpus] =
+ (lsapic->id << 8) | lsapic->eid;
+#endif
+ ++available_cpus;
+ }
+
+ total_cpus++;
+ return 0;
+}
+
+static int __init
+acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_local_apic_nmi *lacpi_nmi;
+
+ lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header;
+
+ if (BAD_MADT_ENTRY(lacpi_nmi, end))
+ return -EINVAL;
+
+ /* TBD: Support lapic_nmi entries */
+ return 0;
+}
+
+static int __init
+acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_io_sapic *iosapic;
+
+ iosapic = (struct acpi_madt_io_sapic *)header;
+
+ if (BAD_MADT_ENTRY(iosapic, end))
+ return -EINVAL;
+
+ return iosapic_init(iosapic->address, iosapic->global_irq_base);
+}
+
+static unsigned int __initdata acpi_madt_rev;
+
+static int __init
+acpi_parse_plat_int_src(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_interrupt_source *plintsrc;
+ int vector;
+
+ plintsrc = (struct acpi_madt_interrupt_source *)header;
+
+ if (BAD_MADT_ENTRY(plintsrc, end))
+ return -EINVAL;
+
+ /*
+ * Get vector assignment for this interrupt, set attributes,
+ * and program the IOSAPIC routing table.
+ */
+ vector = iosapic_register_platform_intr(plintsrc->type,
+ plintsrc->global_irq,
+ plintsrc->io_sapic_vector,
+ plintsrc->eid,
+ plintsrc->id,
+ ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) ==
+ ACPI_MADT_POLARITY_ACTIVE_HIGH) ?
+ IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+ ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
+ ACPI_MADT_TRIGGER_EDGE) ?
+ IOSAPIC_EDGE : IOSAPIC_LEVEL);
+
+ platform_intr_list[plintsrc->type] = vector;
+ if (acpi_madt_rev > 1) {
+ acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;
+ }
+
+ /*
+ * Save the physical id, so we can check when its being removed
+ */
+ acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
+
+ return 0;
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+unsigned int can_cpei_retarget(void)
+{
+ extern int cpe_vector;
+ extern unsigned int force_cpei_retarget;
+
+ /*
+ * Only if CPEI is supported and the override flag
+ * is present, otherwise return that its re-targettable
+ * if we are in polling mode.
+ */
+ if (cpe_vector > 0) {
+ if (acpi_cpei_override || force_cpei_retarget)
+ return 1;
+ else
+ return 0;
+ }
+ return 1;
+}
+
+unsigned int is_cpu_cpei_target(unsigned int cpu)
+{
+ unsigned int logical_id;
+
+ logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
+
+ if (logical_id == cpu)
+ return 1;
+ else
+ return 0;
+}
+
+void set_cpei_target_cpu(unsigned int cpu)
+{
+ acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
+}
+#endif
+
+unsigned int get_cpei_target_cpu(void)
+{
+ return acpi_cpei_phys_cpuid;
+}
+
+static int __init
+acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_interrupt_override *p;
+
+ p = (struct acpi_madt_interrupt_override *)header;
+
+ if (BAD_MADT_ENTRY(p, end))
+ return -EINVAL;
+
+ iosapic_override_isa_irq(p->source_irq, p->global_irq,
+ ((p->inti_flags & ACPI_MADT_POLARITY_MASK) ==
+ ACPI_MADT_POLARITY_ACTIVE_LOW) ?
+ IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH,
+ ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
+ ACPI_MADT_TRIGGER_LEVEL) ?
+ IOSAPIC_LEVEL : IOSAPIC_EDGE);
+ return 0;
+}
+
+static int __init
+acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_nmi_source *nmi_src;
+
+ nmi_src = (struct acpi_madt_nmi_source *)header;
+
+ if (BAD_MADT_ENTRY(nmi_src, end))
+ return -EINVAL;
+
+ /* TBD: Support nimsrc entries */
+ return 0;
+}
+
+static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+ if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) {
+
+ /*
+ * Unfortunately ITC_DRIFT is not yet part of the
+ * official SAL spec, so the ITC_DRIFT bit is not
+ * set by the BIOS on this hardware.
+ */
+ sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
+
+ cyclone_setup();
+ }
+}
+
+static int __init acpi_parse_madt(struct acpi_table_header *table)
+{
+ if (!table)
+ return -EINVAL;
+
+ acpi_madt = (struct acpi_table_madt *)table;
+
+ acpi_madt_rev = acpi_madt->header.revision;
+
+ /* remember the value for reference after free_initmem() */
+#ifdef CONFIG_ITANIUM
+ has_8259 = 1; /* Firmware on old Itanium systems is broken */
+#else
+ has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT;
+#endif
+ iosapic_system_init(has_8259);
+
+ /* Get base address of IPI Message Block */
+
+ if (acpi_madt->address)
+ ipi_base_addr = ioremap(acpi_madt->address, 0);
+
+ printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
+
+ acpi_madt_oem_check(acpi_madt->header.oem_id,
+ acpi_madt->header.oem_table_id);
+
+ return 0;
+}
+
+#ifdef CONFIG_ACPI_NUMA
+
+#undef SLIT_DEBUG
+
+#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
+
+static int __initdata srat_num_cpus; /* number of cpus */
+static u32 pxm_flag[PXM_FLAG_LEN];
+#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
+#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
+static struct acpi_table_slit __initdata *slit_table;
+cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
+
+static int __init
+get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm;
+
+ pxm = pa->proximity_domain_lo;
+ if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
+ pxm += pa->proximity_domain_hi[0] << 8;
+ return pxm;
+}
+
+static int __init
+get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
+{
+ int pxm;
+
+ pxm = ma->proximity_domain;
+ if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
+ pxm &= 0xff;
+
+ return pxm;
+}
+
+/*
+ * ACPI 2.0 SLIT (System Locality Information Table)
+ * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
+ */
+void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
+{
+ u32 len;
+
+ len = sizeof(struct acpi_table_header) + 8
+ + slit->locality_count * slit->locality_count;
+ if (slit->header.length != len) {
+ printk(KERN_ERR
+ "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
+ len, slit->header.length);
+ return;
+ }
+ slit_table = slit;
+}
+
+void __init
+acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm;
+
+ if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
+ return;
+
+ if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
+ printk_once(KERN_WARNING
+ "node_cpuid[%ld] is too small, may not be able to use all cpus\n",
+ ARRAY_SIZE(node_cpuid));
+ return;
+ }
+ pxm = get_processor_proximity_domain(pa);
+
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pxm);
+
+ node_cpuid[srat_num_cpus].phys_id =
+ (pa->apic_id << 8) | (pa->local_sapic_eid);
+ /* nid should be overridden as logical node id later */
+ node_cpuid[srat_num_cpus].nid = pxm;
+ cpu_set(srat_num_cpus, early_cpu_possible_map);
+ srat_num_cpus++;
+}
+
+int __init
+acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
+{
+ unsigned long paddr, size;
+ int pxm;
+ struct node_memblk_s *p, *q, *pend;
+
+ pxm = get_memory_proximity_domain(ma);
+
+ /* fill node memory chunk structure */
+ paddr = ma->base_address;
+ size = ma->length;
+
+ /* Ignore disabled entries */
+ if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
+ return -1;
+
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pxm);
+
+ /* Insertion sort based on base address */
+ pend = &node_memblk[num_node_memblks];
+ for (p = &node_memblk[0]; p < pend; p++) {
+ if (paddr < p->start_paddr)
+ break;
+ }
+ if (p < pend) {
+ for (q = pend - 1; q >= p; q--)
+ *(q + 1) = *q;
+ }
+ p->start_paddr = paddr;
+ p->size = size;
+ p->nid = pxm;
+ num_node_memblks++;
+ return 0;
+}
+
+void __init acpi_numa_arch_fixup(void)
+{
+ int i, j, node_from, node_to;
+
+ /* If there's no SRAT, fix the phys_id and mark node 0 online */
+ if (srat_num_cpus == 0) {
+ node_set_online(0);
+ node_cpuid[0].phys_id = hard_smp_processor_id();
+ return;
+ }
+
+ /*
+ * MCD - This can probably be dropped now. No need for pxm ID to node ID
+ * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
+ */
+ nodes_clear(node_online_map);
+ for (i = 0; i < MAX_PXM_DOMAINS; i++) {
+ if (pxm_bit_test(i)) {
+ int nid = acpi_map_pxm_to_node(i);
+ node_set_online(nid);
+ }
+ }
+
+ /* set logical node id in memory chunk structure */
+ for (i = 0; i < num_node_memblks; i++)
+ node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
+
+ /* assign memory bank numbers for each chunk on each node */
+ for_each_online_node(i) {
+ int bank;
+
+ bank = 0;
+ for (j = 0; j < num_node_memblks; j++)
+ if (node_memblk[j].nid == i)
+ node_memblk[j].bank = bank++;
+ }
+
+ /* set logical node id in cpu structure */
+ for_each_possible_early_cpu(i)
+ node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
+
+ printk(KERN_INFO "Number of logical nodes in system = %d\n",
+ num_online_nodes());
+ printk(KERN_INFO "Number of memory chunks in system = %d\n",
+ num_node_memblks);
+
+ if (!slit_table) {
+ for (i = 0; i < MAX_NUMNODES; i++)
+ for (j = 0; j < MAX_NUMNODES; j++)
+ node_distance(i, j) = i == j ? LOCAL_DISTANCE :
+ REMOTE_DISTANCE;
+ return;
+ }
+
+ memset(numa_slit, -1, sizeof(numa_slit));
+ for (i = 0; i < slit_table->locality_count; i++) {
+ if (!pxm_bit_test(i))
+ continue;
+ node_from = pxm_to_node(i);
+ for (j = 0; j < slit_table->locality_count; j++) {
+ if (!pxm_bit_test(j))
+ continue;
+ node_to = pxm_to_node(j);
+ node_distance(node_from, node_to) =
+ slit_table->entry[i * slit_table->locality_count + j];
+ }
+ }
+
+#ifdef SLIT_DEBUG
+ printk("ACPI 2.0 SLIT locality table:\n");
+ for_each_online_node(i) {
+ for_each_online_node(j)
+ printk("%03d ", node_distance(i, j));
+ printk("\n");
+ }
+#endif
+}
+#endif /* CONFIG_ACPI_NUMA */
+
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
+{
+ if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
+ return gsi;
+
+ if (has_8259 && gsi < 16)
+ return isa_irq_to_vector(gsi);
+
+ return iosapic_register_intr(gsi,
+ (polarity ==
+ ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
+ IOSAPIC_POL_LOW,
+ (triggering ==
+ ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
+ IOSAPIC_LEVEL);
+}
+EXPORT_SYMBOL_GPL(acpi_register_gsi);
+
+void acpi_unregister_gsi(u32 gsi)
+{
+ if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
+ return;
+
+ if (has_8259 && gsi < 16)
+ return;
+
+ iosapic_unregister_intr(gsi);
+}
+EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+static int __init acpi_parse_fadt(struct acpi_table_header *table)
+{
+ struct acpi_table_header *fadt_header;
+ struct acpi_table_fadt *fadt;
+
+ if (!table)
+ return -EINVAL;
+
+ fadt_header = (struct acpi_table_header *)table;
+ if (fadt_header->revision != 3)
+ return -ENODEV; /* Only deal with ACPI 2.0 FADT */
+
+ fadt = (struct acpi_table_fadt *)fadt_header;
+
+ acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
+ ACPI_ACTIVE_LOW);
+ return 0;
+}
+
+int __init early_acpi_boot_init(void)
+{
+ int ret;
+
+ /*
+ * do a partial walk of MADT to determine how many CPUs
+ * we have including offline CPUs
+ */
+ if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ return 0;
+ }
+
+ ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
+ acpi_parse_lsapic, NR_CPUS);
+ if (ret < 1)
+ printk(KERN_ERR PREFIX
+ "Error parsing MADT - no LAPIC entries\n");
+ else
+ acpi_lapic = 1;
+
+#ifdef CONFIG_SMP
+ if (available_cpus == 0) {
+ printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
+ printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
+ smp_boot_data.cpu_phys_id[available_cpus] =
+ hard_smp_processor_id();
+ available_cpus = 1; /* We've got at least one of these, no? */
+ }
+ smp_boot_data.cpu_count = available_cpus;
+#endif
+ /* Make boot-up look pretty */
+ printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
+ total_cpus);
+
+ return 0;
+}
+
+int __init acpi_boot_init(void)
+{
+
+ /*
+ * MADT
+ * ----
+ * Parse the Multiple APIC Description Table (MADT), if exists.
+ * Note that this table provides platform SMP configuration
+ * information -- the successor to MPS tables.
+ */
+
+ if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ goto skip_madt;
+ }
+
+ /* Local APIC */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing LAPIC address override entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0)
+ < 0)
+ printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
+
+ /* I/O APIC */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) {
+ if (!ia64_platform_is("sn2"))
+ printk(KERN_ERR PREFIX
+ "Error parsing MADT - no IOSAPIC entries\n");
+ }
+
+ /* System-Level Interrupt Routing */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src,
+ ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing platform interrupt source entry\n");
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing interrupt source overrides entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0)
+ printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
+ skip_madt:
+
+ /*
+ * FADT says whether a legacy keyboard controller is present.
+ * The FADT also contains an SCI_INT line, by which the system
+ * gets interrupts such as power and sleep buttons. If it's not
+ * on a Legacy interrupt, it needs to be setup.
+ */
+ if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
+ printk(KERN_ERR PREFIX "Can't find FADT\n");
+
+#ifdef CONFIG_ACPI_NUMA
+#ifdef CONFIG_SMP
+ if (srat_num_cpus == 0) {
+ int cpu, i = 1;
+ for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
+ if (smp_boot_data.cpu_phys_id[cpu] !=
+ hard_smp_processor_id())
+ node_cpuid[i++].phys_id =
+ smp_boot_data.cpu_phys_id[cpu];
+ }
+#endif
+ build_cpu_to_node_map();
+#endif
+ return 0;
+}
+
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
+{
+ int tmp;
+
+ if (has_8259 && gsi < 16)
+ *irq = isa_irq_to_vector(gsi);
+ else {
+ tmp = gsi_to_irq(gsi);
+ if (tmp == -1)
+ return -1;
+ *irq = tmp;
+ }
+ return 0;
+}
+
+int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
+{
+ if (isa_irq >= 16)
+ return -1;
+ *gsi = isa_irq;
+ return 0;
+}
+
+/*
+ * ACPI based hotplug CPU support
+ */
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
+{
+#ifdef CONFIG_ACPI_NUMA
+ /*
+ * We don't have cpu-only-node hotadd. But if the system equips
+ * SRAT table, pxm is already found and node is ready.
+ * So, just pxm_to_nid(pxm) is OK.
+ * This code here is for the system which doesn't have full SRAT
+ * table for possible cpus.
+ */
+ node_cpuid[cpu].phys_id = physid;
+ node_cpuid[cpu].nid = acpi_get_node(handle);
+#endif
+ return 0;
+}
+
+int additional_cpus __initdata = -1;
+
+static __init int setup_additional_cpus(char *s)
+{
+ if (s)
+ additional_cpus = simple_strtol(s, NULL, 0);
+
+ return 0;
+}
+
+early_param("additional_cpus", setup_additional_cpus);
+
+/*
+ * cpu_possible_mask should be static, it cannot change as CPUs
+ * are onlined, or offlined. The reason is per-cpu data-structures
+ * are allocated by some modules at init time, and dont expect to
+ * do this dynamically on cpu arrival/departure.
+ * cpu_present_mask on the other hand can change dynamically.
+ * In case when cpu_hotplug is not compiled, then we resort to current
+ * behaviour, which is cpu_possible == cpu_present.
+ * - Ashok Raj
+ *
+ * Three ways to find out the number of additional hotplug CPUs:
+ * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
+ * - The user can overwrite it with additional_cpus=NUM
+ * - Otherwise don't reserve additional CPUs.
+ */
+__init void prefill_possible_map(void)
+{
+ int i;
+ int possible, disabled_cpus;
+
+ disabled_cpus = total_cpus - available_cpus;
+
+ if (additional_cpus == -1) {
+ if (disabled_cpus > 0)
+ additional_cpus = disabled_cpus;
+ else
+ additional_cpus = 0;
+ }
+
+ possible = available_cpus + additional_cpus;
+
+ if (possible > nr_cpu_ids)
+ possible = nr_cpu_ids;
+
+ printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
+ possible, max((possible - available_cpus), 0));
+
+ for (i = 0; i < possible; i++)
+ set_cpu_possible(i, true);
+}
+
+static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
+{
+ cpumask_t tmp_map;
+ int cpu;
+
+ cpumask_complement(&tmp_map, cpu_present_mask);
+ cpu = cpumask_first(&tmp_map);
+ if (cpu >= nr_cpu_ids)
+ return -EINVAL;
+
+ acpi_map_cpu2node(handle, cpu, physid);
+
+ set_cpu_present(cpu, true);
+ ia64_cpu_to_sapicid[cpu] = physid;
+
+ acpi_processor_set_pdc(handle);
+
+ *pcpu = cpu;
+ return (0);
+}
+
+/* wrapper to silence section mismatch warning */
+int __ref acpi_map_cpu(acpi_handle handle, int physid, int *pcpu)
+{
+ return _acpi_map_lsapic(handle, physid, pcpu);
+}
+EXPORT_SYMBOL(acpi_map_cpu);
+
+int acpi_unmap_cpu(int cpu)
+{
+ ia64_cpu_to_sapicid[cpu] = -1;
+ set_cpu_present(cpu, false);
+
+#ifdef CONFIG_ACPI_NUMA
+ /* NUMA specific cleanup's */
+#endif
+
+ return (0);
+}
+EXPORT_SYMBOL(acpi_unmap_cpu);
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+#ifdef CONFIG_ACPI_NUMA
+static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth,
+ void *context, void **ret)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ struct acpi_madt_io_sapic *iosapic;
+ unsigned int gsi_base;
+ int node;
+
+ /* Only care about objects w/ a method that returns the MADT */
+ if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
+ return AE_OK;
+
+ if (!buffer.length || !buffer.pointer)
+ return AE_OK;
+
+ obj = buffer.pointer;
+ if (obj->type != ACPI_TYPE_BUFFER ||
+ obj->buffer.length < sizeof(*iosapic)) {
+ kfree(buffer.pointer);
+ return AE_OK;
+ }
+
+ iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
+
+ if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
+ kfree(buffer.pointer);
+ return AE_OK;
+ }
+
+ gsi_base = iosapic->global_irq_base;
+
+ kfree(buffer.pointer);
+
+ /* OK, it's an IOSAPIC MADT entry; associate it with a node */
+ node = acpi_get_node(handle);
+ if (node == NUMA_NO_NODE || !node_online(node) ||
+ cpumask_empty(cpumask_of_node(node)))
+ return AE_OK;
+
+ /* We know a gsi to node mapping! */
+ map_iosapic_to_node(gsi_base, node);
+ return AE_OK;
+}
+
+static int __init
+acpi_map_iosapics (void)
+{
+ acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
+ return 0;
+}
+
+fs_initcall(acpi_map_iosapics);
+#endif /* CONFIG_ACPI_NUMA */
+
+int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+ int err;
+
+ if ((err = iosapic_init(phys_addr, gsi_base)))
+ return err;
+
+#ifdef CONFIG_ACPI_NUMA
+ acpi_map_iosapic(handle, 0, NULL, NULL);
+#endif /* CONFIG_ACPI_NUMA */
+
+ return 0;
+}
+
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
+{
+ return iosapic_remove(gsi_base);
+}
+
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
+/*
+ * acpi_suspend_lowlevel() - save kernel state and suspend.
+ *
+ * TBD when when IA64 starts to support suspend...
+ */
+int acpi_suspend_lowlevel(void) { return 0; }
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 1/7] ia64: ACPI: move kernel acpi files to a directory
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone at linaro.org @ 2015-01-23 0:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Al Stone <ahs3@redhat.com>
In preparation for adding some additional arch-dependent ACPI files,
move the existing ones to a directory to try to keep clutter down in
the arch/ia64/kernel directory.
There is no functional change. This patch only moves source files.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/ia64/kernel/Makefile | 2 +-
arch/ia64/kernel/acpi-ext.c | 104 ----
arch/ia64/kernel/acpi.c | 1000 --------------------------------------
arch/ia64/kernel/acpi/Makefile | 1 +
arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
6 files changed, 1106 insertions(+), 1105 deletions(-)
delete mode 100644 arch/ia64/kernel/acpi-ext.c
delete mode 100644 arch/ia64/kernel/acpi.c
create mode 100644 arch/ia64/kernel/acpi/Makefile
create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
create mode 100644 arch/ia64/kernel/acpi/acpi.c
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 20678a9..2218842 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -13,7 +13,7 @@ obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64
salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
unwind.o mca.o mca_asm.o topology.o dma-mapping.o
-obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
+obj-y += acpi/
obj-$(CONFIG_IA64_BRL_EMU) += brl_emu.o
obj-$(CONFIG_IA64_PALINFO) += palinfo.o
diff --git a/arch/ia64/kernel/acpi-ext.c b/arch/ia64/kernel/acpi-ext.c
deleted file mode 100644
index 8b9318d..0000000
--- a/arch/ia64/kernel/acpi-ext.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P.
- * Alex Williamson <alex.williamson@hp.com>
- * Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/acpi.h>
-
-#include <asm/acpi-ext.h>
-
-/*
- * Device CSRs that do not appear in PCI config space should be described
- * via ACPI. This would normally be done with Address Space Descriptors
- * marked as "consumer-only," but old versions of Windows and Linux ignore
- * the producer/consumer flag, so HP invented a vendor-defined resource to
- * describe the location and size of CSR space.
- */
-
-struct acpi_vendor_uuid hp_ccsr_uuid = {
- .subtype = 2,
- .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
- 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
-};
-
-static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)
-{
- acpi_status status;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- struct acpi_resource *resource;
- struct acpi_resource_vendor_typed *vendor;
-
- status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS, &hp_ccsr_uuid,
- &buffer);
-
- resource = buffer.pointer;
- vendor = &resource->data.vendor_typed;
-
- if (ACPI_FAILURE(status) || vendor->byte_length < 16) {
- status = AE_NOT_FOUND;
- goto exit;
- }
-
- memcpy(base, vendor->byte_data, sizeof(*base));
- memcpy(length, vendor->byte_data + 8, sizeof(*length));
-
- exit:
- kfree(buffer.pointer);
- return status;
-}
-
-struct csr_space {
- u64 base;
- u64 length;
-};
-
-static acpi_status find_csr_space(struct acpi_resource *resource, void *data)
-{
- struct csr_space *space = data;
- struct acpi_resource_address64 addr;
- acpi_status status;
-
- status = acpi_resource_to_address64(resource, &addr);
- if (ACPI_SUCCESS(status) &&
- addr.resource_type == ACPI_MEMORY_RANGE &&
- addr.address_length &&
- addr.producer_consumer == ACPI_CONSUMER) {
- space->base = addr.minimum;
- space->length = addr.address_length;
- return AE_CTRL_TERMINATE;
- }
- return AE_OK; /* keep looking */
-}
-
-static acpi_status hp_crs_locate(acpi_handle obj, u64 *base, u64 *length)
-{
- struct csr_space space = { 0, 0 };
-
- acpi_walk_resources(obj, METHOD_NAME__CRS, find_csr_space, &space);
- if (!space.length)
- return AE_NOT_FOUND;
-
- *base = space.base;
- *length = space.length;
- return AE_OK;
-}
-
-acpi_status hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
-{
- acpi_status status;
-
- status = hp_ccsr_locate(obj, csr_base, csr_length);
- if (ACPI_SUCCESS(status))
- return status;
-
- return hp_crs_locate(obj, csr_base, csr_length);
-}
-EXPORT_SYMBOL(hp_acpi_csr_space);
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
deleted file mode 100644
index e795cb8..0000000
--- a/arch/ia64/kernel/acpi.c
+++ /dev/null
@@ -1,1000 +0,0 @@
-/*
- * acpi.c - Architecture-Specific Low-Level ACPI Support
- *
- * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
- * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
- * David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 2000 Intel Corp.
- * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
- * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
- * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
- * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
- * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
- * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/irq.h>
-#include <linux/acpi.h>
-#include <linux/efi.h>
-#include <linux/mmzone.h>
-#include <linux/nodemask.h>
-#include <linux/slab.h>
-#include <acpi/processor.h>
-#include <asm/io.h>
-#include <asm/iosapic.h>
-#include <asm/machvec.h>
-#include <asm/page.h>
-#include <asm/numa.h>
-#include <asm/sal.h>
-#include <asm/cyclone.h>
-
-#define PREFIX "ACPI: "
-
-int acpi_lapic;
-unsigned int acpi_cpei_override;
-unsigned int acpi_cpei_phys_cpuid;
-
-unsigned long acpi_wakeup_address = 0;
-
-#ifdef CONFIG_IA64_GENERIC
-static unsigned long __init acpi_find_rsdp(void)
-{
- unsigned long rsdp_phys = 0;
-
- if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
- rsdp_phys = efi.acpi20;
- else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
- printk(KERN_WARNING PREFIX
- "v1.0/r0.71 tables no longer supported\n");
- return rsdp_phys;
-}
-
-const char __init *
-acpi_get_sysname(void)
-{
- unsigned long rsdp_phys;
- struct acpi_table_rsdp *rsdp;
- struct acpi_table_xsdt *xsdt;
- struct acpi_table_header *hdr;
-#ifdef CONFIG_INTEL_IOMMU
- u64 i, nentries;
-#endif
-
- rsdp_phys = acpi_find_rsdp();
- if (!rsdp_phys) {
- printk(KERN_ERR
- "ACPI 2.0 RSDP not found, default to \"dig\"\n");
- return "dig";
- }
-
- rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys);
- if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
- printk(KERN_ERR
- "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
- return "dig";
- }
-
- xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
- hdr = &xsdt->header;
- if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) {
- printk(KERN_ERR
- "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
- return "dig";
- }
-
- if (!strcmp(hdr->oem_id, "HP")) {
- return "hpzx1";
- } else if (!strcmp(hdr->oem_id, "SGI")) {
- if (!strcmp(hdr->oem_table_id + 4, "UV"))
- return "uv";
- else
- return "sn2";
- }
-
-#ifdef CONFIG_INTEL_IOMMU
- /* Look for Intel IOMMU */
- nentries = (hdr->length - sizeof(*hdr)) /
- sizeof(xsdt->table_offset_entry[0]);
- for (i = 0; i < nentries; i++) {
- hdr = __va(xsdt->table_offset_entry[i]);
- if (strncmp(hdr->signature, ACPI_SIG_DMAR,
- sizeof(ACPI_SIG_DMAR) - 1) == 0)
- return "dig_vtd";
- }
-#endif
-
- return "dig";
-}
-#endif /* CONFIG_IA64_GENERIC */
-
-#define ACPI_MAX_PLATFORM_INTERRUPTS 256
-
-/* Array to record platform interrupt vectors for generic interrupt routing. */
-int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
- [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
-};
-
-enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
-
-/*
- * Interrupt routing API for device drivers. Provides interrupt vector for
- * a generic platform event. Currently only CPEI is implemented.
- */
-int acpi_request_vector(u32 int_type)
-{
- int vector = -1;
-
- if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
- /* corrected platform error interrupt */
- vector = platform_intr_list[int_type];
- } else
- printk(KERN_ERR
- "acpi_request_vector(): invalid interrupt type\n");
- return vector;
-}
-
-char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
-{
- return __va(phys_addr);
-}
-
-void __init __acpi_unmap_table(char *map, unsigned long size)
-{
-}
-
-/* --------------------------------------------------------------------------
- Boot-time Table Parsing
- -------------------------------------------------------------------------- */
-
-static int available_cpus __initdata;
-struct acpi_table_madt *acpi_madt __initdata;
-static u8 has_8259;
-
-static int __init
-acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_local_apic_override *lapic;
-
- lapic = (struct acpi_madt_local_apic_override *)header;
-
- if (BAD_MADT_ENTRY(lapic, end))
- return -EINVAL;
-
- if (lapic->address) {
- iounmap(ipi_base_addr);
- ipi_base_addr = ioremap(lapic->address, 0);
- }
- return 0;
-}
-
-static int __init
-acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_local_sapic *lsapic;
-
- lsapic = (struct acpi_madt_local_sapic *)header;
-
- /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */
-
- if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
-#ifdef CONFIG_SMP
- smp_boot_data.cpu_phys_id[available_cpus] =
- (lsapic->id << 8) | lsapic->eid;
-#endif
- ++available_cpus;
- }
-
- total_cpus++;
- return 0;
-}
-
-static int __init
-acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_local_apic_nmi *lacpi_nmi;
-
- lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header;
-
- if (BAD_MADT_ENTRY(lacpi_nmi, end))
- return -EINVAL;
-
- /* TBD: Support lapic_nmi entries */
- return 0;
-}
-
-static int __init
-acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_io_sapic *iosapic;
-
- iosapic = (struct acpi_madt_io_sapic *)header;
-
- if (BAD_MADT_ENTRY(iosapic, end))
- return -EINVAL;
-
- return iosapic_init(iosapic->address, iosapic->global_irq_base);
-}
-
-static unsigned int __initdata acpi_madt_rev;
-
-static int __init
-acpi_parse_plat_int_src(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_interrupt_source *plintsrc;
- int vector;
-
- plintsrc = (struct acpi_madt_interrupt_source *)header;
-
- if (BAD_MADT_ENTRY(plintsrc, end))
- return -EINVAL;
-
- /*
- * Get vector assignment for this interrupt, set attributes,
- * and program the IOSAPIC routing table.
- */
- vector = iosapic_register_platform_intr(plintsrc->type,
- plintsrc->global_irq,
- plintsrc->io_sapic_vector,
- plintsrc->eid,
- plintsrc->id,
- ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) ==
- ACPI_MADT_POLARITY_ACTIVE_HIGH) ?
- IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
- ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
- ACPI_MADT_TRIGGER_EDGE) ?
- IOSAPIC_EDGE : IOSAPIC_LEVEL);
-
- platform_intr_list[plintsrc->type] = vector;
- if (acpi_madt_rev > 1) {
- acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;
- }
-
- /*
- * Save the physical id, so we can check when its being removed
- */
- acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
-
- return 0;
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-unsigned int can_cpei_retarget(void)
-{
- extern int cpe_vector;
- extern unsigned int force_cpei_retarget;
-
- /*
- * Only if CPEI is supported and the override flag
- * is present, otherwise return that its re-targettable
- * if we are in polling mode.
- */
- if (cpe_vector > 0) {
- if (acpi_cpei_override || force_cpei_retarget)
- return 1;
- else
- return 0;
- }
- return 1;
-}
-
-unsigned int is_cpu_cpei_target(unsigned int cpu)
-{
- unsigned int logical_id;
-
- logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
-
- if (logical_id == cpu)
- return 1;
- else
- return 0;
-}
-
-void set_cpei_target_cpu(unsigned int cpu)
-{
- acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
-}
-#endif
-
-unsigned int get_cpei_target_cpu(void)
-{
- return acpi_cpei_phys_cpuid;
-}
-
-static int __init
-acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_interrupt_override *p;
-
- p = (struct acpi_madt_interrupt_override *)header;
-
- if (BAD_MADT_ENTRY(p, end))
- return -EINVAL;
-
- iosapic_override_isa_irq(p->source_irq, p->global_irq,
- ((p->inti_flags & ACPI_MADT_POLARITY_MASK) ==
- ACPI_MADT_POLARITY_ACTIVE_LOW) ?
- IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH,
- ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
- ACPI_MADT_TRIGGER_LEVEL) ?
- IOSAPIC_LEVEL : IOSAPIC_EDGE);
- return 0;
-}
-
-static int __init
-acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_nmi_source *nmi_src;
-
- nmi_src = (struct acpi_madt_nmi_source *)header;
-
- if (BAD_MADT_ENTRY(nmi_src, end))
- return -EINVAL;
-
- /* TBD: Support nimsrc entries */
- return 0;
-}
-
-static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
-{
- if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) {
-
- /*
- * Unfortunately ITC_DRIFT is not yet part of the
- * official SAL spec, so the ITC_DRIFT bit is not
- * set by the BIOS on this hardware.
- */
- sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
-
- cyclone_setup();
- }
-}
-
-static int __init acpi_parse_madt(struct acpi_table_header *table)
-{
- if (!table)
- return -EINVAL;
-
- acpi_madt = (struct acpi_table_madt *)table;
-
- acpi_madt_rev = acpi_madt->header.revision;
-
- /* remember the value for reference after free_initmem() */
-#ifdef CONFIG_ITANIUM
- has_8259 = 1; /* Firmware on old Itanium systems is broken */
-#else
- has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT;
-#endif
- iosapic_system_init(has_8259);
-
- /* Get base address of IPI Message Block */
-
- if (acpi_madt->address)
- ipi_base_addr = ioremap(acpi_madt->address, 0);
-
- printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
-
- acpi_madt_oem_check(acpi_madt->header.oem_id,
- acpi_madt->header.oem_table_id);
-
- return 0;
-}
-
-#ifdef CONFIG_ACPI_NUMA
-
-#undef SLIT_DEBUG
-
-#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
-
-static int __initdata srat_num_cpus; /* number of cpus */
-static u32 pxm_flag[PXM_FLAG_LEN];
-#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
-#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
-static struct acpi_table_slit __initdata *slit_table;
-cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
-
-static int __init
-get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
-{
- int pxm;
-
- pxm = pa->proximity_domain_lo;
- if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
- pxm += pa->proximity_domain_hi[0] << 8;
- return pxm;
-}
-
-static int __init
-get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
-{
- int pxm;
-
- pxm = ma->proximity_domain;
- if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
- pxm &= 0xff;
-
- return pxm;
-}
-
-/*
- * ACPI 2.0 SLIT (System Locality Information Table)
- * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
- */
-void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
-{
- u32 len;
-
- len = sizeof(struct acpi_table_header) + 8
- + slit->locality_count * slit->locality_count;
- if (slit->header.length != len) {
- printk(KERN_ERR
- "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
- len, slit->header.length);
- return;
- }
- slit_table = slit;
-}
-
-void __init
-acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
-{
- int pxm;
-
- if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
- return;
-
- if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
- printk_once(KERN_WARNING
- "node_cpuid[%ld] is too small, may not be able to use all cpus\n",
- ARRAY_SIZE(node_cpuid));
- return;
- }
- pxm = get_processor_proximity_domain(pa);
-
- /* record this node in proximity bitmap */
- pxm_bit_set(pxm);
-
- node_cpuid[srat_num_cpus].phys_id =
- (pa->apic_id << 8) | (pa->local_sapic_eid);
- /* nid should be overridden as logical node id later */
- node_cpuid[srat_num_cpus].nid = pxm;
- cpu_set(srat_num_cpus, early_cpu_possible_map);
- srat_num_cpus++;
-}
-
-int __init
-acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
-{
- unsigned long paddr, size;
- int pxm;
- struct node_memblk_s *p, *q, *pend;
-
- pxm = get_memory_proximity_domain(ma);
-
- /* fill node memory chunk structure */
- paddr = ma->base_address;
- size = ma->length;
-
- /* Ignore disabled entries */
- if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
- return -1;
-
- /* record this node in proximity bitmap */
- pxm_bit_set(pxm);
-
- /* Insertion sort based on base address */
- pend = &node_memblk[num_node_memblks];
- for (p = &node_memblk[0]; p < pend; p++) {
- if (paddr < p->start_paddr)
- break;
- }
- if (p < pend) {
- for (q = pend - 1; q >= p; q--)
- *(q + 1) = *q;
- }
- p->start_paddr = paddr;
- p->size = size;
- p->nid = pxm;
- num_node_memblks++;
- return 0;
-}
-
-void __init acpi_numa_arch_fixup(void)
-{
- int i, j, node_from, node_to;
-
- /* If there's no SRAT, fix the phys_id and mark node 0 online */
- if (srat_num_cpus == 0) {
- node_set_online(0);
- node_cpuid[0].phys_id = hard_smp_processor_id();
- return;
- }
-
- /*
- * MCD - This can probably be dropped now. No need for pxm ID to node ID
- * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
- */
- nodes_clear(node_online_map);
- for (i = 0; i < MAX_PXM_DOMAINS; i++) {
- if (pxm_bit_test(i)) {
- int nid = acpi_map_pxm_to_node(i);
- node_set_online(nid);
- }
- }
-
- /* set logical node id in memory chunk structure */
- for (i = 0; i < num_node_memblks; i++)
- node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
-
- /* assign memory bank numbers for each chunk on each node */
- for_each_online_node(i) {
- int bank;
-
- bank = 0;
- for (j = 0; j < num_node_memblks; j++)
- if (node_memblk[j].nid == i)
- node_memblk[j].bank = bank++;
- }
-
- /* set logical node id in cpu structure */
- for_each_possible_early_cpu(i)
- node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
-
- printk(KERN_INFO "Number of logical nodes in system = %d\n",
- num_online_nodes());
- printk(KERN_INFO "Number of memory chunks in system = %d\n",
- num_node_memblks);
-
- if (!slit_table) {
- for (i = 0; i < MAX_NUMNODES; i++)
- for (j = 0; j < MAX_NUMNODES; j++)
- node_distance(i, j) = i == j ? LOCAL_DISTANCE :
- REMOTE_DISTANCE;
- return;
- }
-
- memset(numa_slit, -1, sizeof(numa_slit));
- for (i = 0; i < slit_table->locality_count; i++) {
- if (!pxm_bit_test(i))
- continue;
- node_from = pxm_to_node(i);
- for (j = 0; j < slit_table->locality_count; j++) {
- if (!pxm_bit_test(j))
- continue;
- node_to = pxm_to_node(j);
- node_distance(node_from, node_to) =
- slit_table->entry[i * slit_table->locality_count + j];
- }
- }
-
-#ifdef SLIT_DEBUG
- printk("ACPI 2.0 SLIT locality table:\n");
- for_each_online_node(i) {
- for_each_online_node(j)
- printk("%03d ", node_distance(i, j));
- printk("\n");
- }
-#endif
-}
-#endif /* CONFIG_ACPI_NUMA */
-
-/*
- * success: return IRQ number (>=0)
- * failure: return < 0
- */
-int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
-{
- if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
- return gsi;
-
- if (has_8259 && gsi < 16)
- return isa_irq_to_vector(gsi);
-
- return iosapic_register_intr(gsi,
- (polarity ==
- ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
- IOSAPIC_POL_LOW,
- (triggering ==
- ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
- IOSAPIC_LEVEL);
-}
-EXPORT_SYMBOL_GPL(acpi_register_gsi);
-
-void acpi_unregister_gsi(u32 gsi)
-{
- if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
- return;
-
- if (has_8259 && gsi < 16)
- return;
-
- iosapic_unregister_intr(gsi);
-}
-EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
-
-static int __init acpi_parse_fadt(struct acpi_table_header *table)
-{
- struct acpi_table_header *fadt_header;
- struct acpi_table_fadt *fadt;
-
- if (!table)
- return -EINVAL;
-
- fadt_header = (struct acpi_table_header *)table;
- if (fadt_header->revision != 3)
- return -ENODEV; /* Only deal with ACPI 2.0 FADT */
-
- fadt = (struct acpi_table_fadt *)fadt_header;
-
- acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
- ACPI_ACTIVE_LOW);
- return 0;
-}
-
-int __init early_acpi_boot_init(void)
-{
- int ret;
-
- /*
- * do a partial walk of MADT to determine how many CPUs
- * we have including offline CPUs
- */
- if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
- printk(KERN_ERR PREFIX "Can't find MADT\n");
- return 0;
- }
-
- ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
- acpi_parse_lsapic, NR_CPUS);
- if (ret < 1)
- printk(KERN_ERR PREFIX
- "Error parsing MADT - no LAPIC entries\n");
- else
- acpi_lapic = 1;
-
-#ifdef CONFIG_SMP
- if (available_cpus == 0) {
- printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
- printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
- smp_boot_data.cpu_phys_id[available_cpus] =
- hard_smp_processor_id();
- available_cpus = 1; /* We've got@least one of these, no? */
- }
- smp_boot_data.cpu_count = available_cpus;
-#endif
- /* Make boot-up look pretty */
- printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
- total_cpus);
-
- return 0;
-}
-
-int __init acpi_boot_init(void)
-{
-
- /*
- * MADT
- * ----
- * Parse the Multiple APIC Description Table (MADT), if exists.
- * Note that this table provides platform SMP configuration
- * information -- the successor to MPS tables.
- */
-
- if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
- printk(KERN_ERR PREFIX "Can't find MADT\n");
- goto skip_madt;
- }
-
- /* Local APIC */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing LAPIC address override entry\n");
-
- if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0)
- < 0)
- printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
-
- /* I/O APIC */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) {
- if (!ia64_platform_is("sn2"))
- printk(KERN_ERR PREFIX
- "Error parsing MADT - no IOSAPIC entries\n");
- }
-
- /* System-Level Interrupt Routing */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src,
- ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing platform interrupt source entry\n");
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing interrupt source overrides entry\n");
-
- if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0)
- printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
- skip_madt:
-
- /*
- * FADT says whether a legacy keyboard controller is present.
- * The FADT also contains an SCI_INT line, by which the system
- * gets interrupts such as power and sleep buttons. If it's not
- * on a Legacy interrupt, it needs to be setup.
- */
- if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
- printk(KERN_ERR PREFIX "Can't find FADT\n");
-
-#ifdef CONFIG_ACPI_NUMA
-#ifdef CONFIG_SMP
- if (srat_num_cpus == 0) {
- int cpu, i = 1;
- for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
- if (smp_boot_data.cpu_phys_id[cpu] !=
- hard_smp_processor_id())
- node_cpuid[i++].phys_id =
- smp_boot_data.cpu_phys_id[cpu];
- }
-#endif
- build_cpu_to_node_map();
-#endif
- return 0;
-}
-
-int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
-{
- int tmp;
-
- if (has_8259 && gsi < 16)
- *irq = isa_irq_to_vector(gsi);
- else {
- tmp = gsi_to_irq(gsi);
- if (tmp == -1)
- return -1;
- *irq = tmp;
- }
- return 0;
-}
-
-int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
-{
- if (isa_irq >= 16)
- return -1;
- *gsi = isa_irq;
- return 0;
-}
-
-/*
- * ACPI based hotplug CPU support
- */
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
-static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
-{
-#ifdef CONFIG_ACPI_NUMA
- /*
- * We don't have cpu-only-node hotadd. But if the system equips
- * SRAT table, pxm is already found and node is ready.
- * So, just pxm_to_nid(pxm) is OK.
- * This code here is for the system which doesn't have full SRAT
- * table for possible cpus.
- */
- node_cpuid[cpu].phys_id = physid;
- node_cpuid[cpu].nid = acpi_get_node(handle);
-#endif
- return 0;
-}
-
-int additional_cpus __initdata = -1;
-
-static __init int setup_additional_cpus(char *s)
-{
- if (s)
- additional_cpus = simple_strtol(s, NULL, 0);
-
- return 0;
-}
-
-early_param("additional_cpus", setup_additional_cpus);
-
-/*
- * cpu_possible_mask should be static, it cannot change as CPUs
- * are onlined, or offlined. The reason is per-cpu data-structures
- * are allocated by some modules at init time, and dont expect to
- * do this dynamically on cpu arrival/departure.
- * cpu_present_mask on the other hand can change dynamically.
- * In case when cpu_hotplug is not compiled, then we resort to current
- * behaviour, which is cpu_possible == cpu_present.
- * - Ashok Raj
- *
- * Three ways to find out the number of additional hotplug CPUs:
- * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
- * - The user can overwrite it with additional_cpus=NUM
- * - Otherwise don't reserve additional CPUs.
- */
-__init void prefill_possible_map(void)
-{
- int i;
- int possible, disabled_cpus;
-
- disabled_cpus = total_cpus - available_cpus;
-
- if (additional_cpus == -1) {
- if (disabled_cpus > 0)
- additional_cpus = disabled_cpus;
- else
- additional_cpus = 0;
- }
-
- possible = available_cpus + additional_cpus;
-
- if (possible > nr_cpu_ids)
- possible = nr_cpu_ids;
-
- printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
- possible, max((possible - available_cpus), 0));
-
- for (i = 0; i < possible; i++)
- set_cpu_possible(i, true);
-}
-
-static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
-{
- cpumask_t tmp_map;
- int cpu;
-
- cpumask_complement(&tmp_map, cpu_present_mask);
- cpu = cpumask_first(&tmp_map);
- if (cpu >= nr_cpu_ids)
- return -EINVAL;
-
- acpi_map_cpu2node(handle, cpu, physid);
-
- set_cpu_present(cpu, true);
- ia64_cpu_to_sapicid[cpu] = physid;
-
- acpi_processor_set_pdc(handle);
-
- *pcpu = cpu;
- return (0);
-}
-
-/* wrapper to silence section mismatch warning */
-int __ref acpi_map_cpu(acpi_handle handle, int physid, int *pcpu)
-{
- return _acpi_map_lsapic(handle, physid, pcpu);
-}
-EXPORT_SYMBOL(acpi_map_cpu);
-
-int acpi_unmap_cpu(int cpu)
-{
- ia64_cpu_to_sapicid[cpu] = -1;
- set_cpu_present(cpu, false);
-
-#ifdef CONFIG_ACPI_NUMA
- /* NUMA specific cleanup's */
-#endif
-
- return (0);
-}
-EXPORT_SYMBOL(acpi_unmap_cpu);
-#endif /* CONFIG_ACPI_HOTPLUG_CPU */
-
-#ifdef CONFIG_ACPI_NUMA
-static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth,
- void *context, void **ret)
-{
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *obj;
- struct acpi_madt_io_sapic *iosapic;
- unsigned int gsi_base;
- int node;
-
- /* Only care about objects w/ a method that returns the MADT */
- if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
- return AE_OK;
-
- if (!buffer.length || !buffer.pointer)
- return AE_OK;
-
- obj = buffer.pointer;
- if (obj->type != ACPI_TYPE_BUFFER ||
- obj->buffer.length < sizeof(*iosapic)) {
- kfree(buffer.pointer);
- return AE_OK;
- }
-
- iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
-
- if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
- kfree(buffer.pointer);
- return AE_OK;
- }
-
- gsi_base = iosapic->global_irq_base;
-
- kfree(buffer.pointer);
-
- /* OK, it's an IOSAPIC MADT entry; associate it with a node */
- node = acpi_get_node(handle);
- if (node == NUMA_NO_NODE || !node_online(node) ||
- cpumask_empty(cpumask_of_node(node)))
- return AE_OK;
-
- /* We know a gsi to node mapping! */
- map_iosapic_to_node(gsi_base, node);
- return AE_OK;
-}
-
-static int __init
-acpi_map_iosapics (void)
-{
- acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
- return 0;
-}
-
-fs_initcall(acpi_map_iosapics);
-#endif /* CONFIG_ACPI_NUMA */
-
-int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
-{
- int err;
-
- if ((err = iosapic_init(phys_addr, gsi_base)))
- return err;
-
-#ifdef CONFIG_ACPI_NUMA
- acpi_map_iosapic(handle, 0, NULL, NULL);
-#endif /* CONFIG_ACPI_NUMA */
-
- return 0;
-}
-
-EXPORT_SYMBOL(acpi_register_ioapic);
-
-int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
-{
- return iosapic_remove(gsi_base);
-}
-
-EXPORT_SYMBOL(acpi_unregister_ioapic);
-
-/*
- * acpi_suspend_lowlevel() - save kernel state and suspend.
- *
- * TBD when when IA64 starts to support suspend...
- */
-int acpi_suspend_lowlevel(void) { return 0; }
diff --git a/arch/ia64/kernel/acpi/Makefile b/arch/ia64/kernel/acpi/Makefile
new file mode 100644
index 0000000..8c12745
--- /dev/null
+++ b/arch/ia64/kernel/acpi/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
diff --git a/arch/ia64/kernel/acpi/acpi-ext.c b/arch/ia64/kernel/acpi/acpi-ext.c
new file mode 100644
index 0000000..8b9318d
--- /dev/null
+++ b/arch/ia64/kernel/acpi/acpi-ext.c
@@ -0,0 +1,104 @@
+/*
+ * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P.
+ * Alex Williamson <alex.williamson@hp.com>
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+
+#include <asm/acpi-ext.h>
+
+/*
+ * Device CSRs that do not appear in PCI config space should be described
+ * via ACPI. This would normally be done with Address Space Descriptors
+ * marked as "consumer-only," but old versions of Windows and Linux ignore
+ * the producer/consumer flag, so HP invented a vendor-defined resource to
+ * describe the location and size of CSR space.
+ */
+
+struct acpi_vendor_uuid hp_ccsr_uuid = {
+ .subtype = 2,
+ .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
+ 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
+};
+
+static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)
+{
+ acpi_status status;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_resource *resource;
+ struct acpi_resource_vendor_typed *vendor;
+
+ status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS, &hp_ccsr_uuid,
+ &buffer);
+
+ resource = buffer.pointer;
+ vendor = &resource->data.vendor_typed;
+
+ if (ACPI_FAILURE(status) || vendor->byte_length < 16) {
+ status = AE_NOT_FOUND;
+ goto exit;
+ }
+
+ memcpy(base, vendor->byte_data, sizeof(*base));
+ memcpy(length, vendor->byte_data + 8, sizeof(*length));
+
+ exit:
+ kfree(buffer.pointer);
+ return status;
+}
+
+struct csr_space {
+ u64 base;
+ u64 length;
+};
+
+static acpi_status find_csr_space(struct acpi_resource *resource, void *data)
+{
+ struct csr_space *space = data;
+ struct acpi_resource_address64 addr;
+ acpi_status status;
+
+ status = acpi_resource_to_address64(resource, &addr);
+ if (ACPI_SUCCESS(status) &&
+ addr.resource_type == ACPI_MEMORY_RANGE &&
+ addr.address_length &&
+ addr.producer_consumer == ACPI_CONSUMER) {
+ space->base = addr.minimum;
+ space->length = addr.address_length;
+ return AE_CTRL_TERMINATE;
+ }
+ return AE_OK; /* keep looking */
+}
+
+static acpi_status hp_crs_locate(acpi_handle obj, u64 *base, u64 *length)
+{
+ struct csr_space space = { 0, 0 };
+
+ acpi_walk_resources(obj, METHOD_NAME__CRS, find_csr_space, &space);
+ if (!space.length)
+ return AE_NOT_FOUND;
+
+ *base = space.base;
+ *length = space.length;
+ return AE_OK;
+}
+
+acpi_status hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
+{
+ acpi_status status;
+
+ status = hp_ccsr_locate(obj, csr_base, csr_length);
+ if (ACPI_SUCCESS(status))
+ return status;
+
+ return hp_crs_locate(obj, csr_base, csr_length);
+}
+EXPORT_SYMBOL(hp_acpi_csr_space);
diff --git a/arch/ia64/kernel/acpi/acpi.c b/arch/ia64/kernel/acpi/acpi.c
new file mode 100644
index 0000000..e795cb8
--- /dev/null
+++ b/arch/ia64/kernel/acpi/acpi.c
@@ -0,0 +1,1000 @@
+/*
+ * acpi.c - Architecture-Specific Low-Level ACPI Support
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
+ * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2000 Intel Corp.
+ * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
+ * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
+ * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
+ * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
+ * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+#include <linux/acpi.h>
+#include <linux/efi.h>
+#include <linux/mmzone.h>
+#include <linux/nodemask.h>
+#include <linux/slab.h>
+#include <acpi/processor.h>
+#include <asm/io.h>
+#include <asm/iosapic.h>
+#include <asm/machvec.h>
+#include <asm/page.h>
+#include <asm/numa.h>
+#include <asm/sal.h>
+#include <asm/cyclone.h>
+
+#define PREFIX "ACPI: "
+
+int acpi_lapic;
+unsigned int acpi_cpei_override;
+unsigned int acpi_cpei_phys_cpuid;
+
+unsigned long acpi_wakeup_address = 0;
+
+#ifdef CONFIG_IA64_GENERIC
+static unsigned long __init acpi_find_rsdp(void)
+{
+ unsigned long rsdp_phys = 0;
+
+ if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+ rsdp_phys = efi.acpi20;
+ else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+ printk(KERN_WARNING PREFIX
+ "v1.0/r0.71 tables no longer supported\n");
+ return rsdp_phys;
+}
+
+const char __init *
+acpi_get_sysname(void)
+{
+ unsigned long rsdp_phys;
+ struct acpi_table_rsdp *rsdp;
+ struct acpi_table_xsdt *xsdt;
+ struct acpi_table_header *hdr;
+#ifdef CONFIG_INTEL_IOMMU
+ u64 i, nentries;
+#endif
+
+ rsdp_phys = acpi_find_rsdp();
+ if (!rsdp_phys) {
+ printk(KERN_ERR
+ "ACPI 2.0 RSDP not found, default to \"dig\"\n");
+ return "dig";
+ }
+
+ rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys);
+ if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
+ printk(KERN_ERR
+ "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
+ hdr = &xsdt->header;
+ if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) {
+ printk(KERN_ERR
+ "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ if (!strcmp(hdr->oem_id, "HP")) {
+ return "hpzx1";
+ } else if (!strcmp(hdr->oem_id, "SGI")) {
+ if (!strcmp(hdr->oem_table_id + 4, "UV"))
+ return "uv";
+ else
+ return "sn2";
+ }
+
+#ifdef CONFIG_INTEL_IOMMU
+ /* Look for Intel IOMMU */
+ nentries = (hdr->length - sizeof(*hdr)) /
+ sizeof(xsdt->table_offset_entry[0]);
+ for (i = 0; i < nentries; i++) {
+ hdr = __va(xsdt->table_offset_entry[i]);
+ if (strncmp(hdr->signature, ACPI_SIG_DMAR,
+ sizeof(ACPI_SIG_DMAR) - 1) == 0)
+ return "dig_vtd";
+ }
+#endif
+
+ return "dig";
+}
+#endif /* CONFIG_IA64_GENERIC */
+
+#define ACPI_MAX_PLATFORM_INTERRUPTS 256
+
+/* Array to record platform interrupt vectors for generic interrupt routing. */
+int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
+ [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
+};
+
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
+
+/*
+ * Interrupt routing API for device drivers. Provides interrupt vector for
+ * a generic platform event. Currently only CPEI is implemented.
+ */
+int acpi_request_vector(u32 int_type)
+{
+ int vector = -1;
+
+ if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
+ /* corrected platform error interrupt */
+ vector = platform_intr_list[int_type];
+ } else
+ printk(KERN_ERR
+ "acpi_request_vector(): invalid interrupt type\n");
+ return vector;
+}
+
+char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
+{
+ return __va(phys_addr);
+}
+
+void __init __acpi_unmap_table(char *map, unsigned long size)
+{
+}
+
+/* --------------------------------------------------------------------------
+ Boot-time Table Parsing
+ -------------------------------------------------------------------------- */
+
+static int available_cpus __initdata;
+struct acpi_table_madt *acpi_madt __initdata;
+static u8 has_8259;
+
+static int __init
+acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_local_apic_override *lapic;
+
+ lapic = (struct acpi_madt_local_apic_override *)header;
+
+ if (BAD_MADT_ENTRY(lapic, end))
+ return -EINVAL;
+
+ if (lapic->address) {
+ iounmap(ipi_base_addr);
+ ipi_base_addr = ioremap(lapic->address, 0);
+ }
+ return 0;
+}
+
+static int __init
+acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_local_sapic *lsapic;
+
+ lsapic = (struct acpi_madt_local_sapic *)header;
+
+ /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */
+
+ if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
+#ifdef CONFIG_SMP
+ smp_boot_data.cpu_phys_id[available_cpus] =
+ (lsapic->id << 8) | lsapic->eid;
+#endif
+ ++available_cpus;
+ }
+
+ total_cpus++;
+ return 0;
+}
+
+static int __init
+acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_local_apic_nmi *lacpi_nmi;
+
+ lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header;
+
+ if (BAD_MADT_ENTRY(lacpi_nmi, end))
+ return -EINVAL;
+
+ /* TBD: Support lapic_nmi entries */
+ return 0;
+}
+
+static int __init
+acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_io_sapic *iosapic;
+
+ iosapic = (struct acpi_madt_io_sapic *)header;
+
+ if (BAD_MADT_ENTRY(iosapic, end))
+ return -EINVAL;
+
+ return iosapic_init(iosapic->address, iosapic->global_irq_base);
+}
+
+static unsigned int __initdata acpi_madt_rev;
+
+static int __init
+acpi_parse_plat_int_src(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_interrupt_source *plintsrc;
+ int vector;
+
+ plintsrc = (struct acpi_madt_interrupt_source *)header;
+
+ if (BAD_MADT_ENTRY(plintsrc, end))
+ return -EINVAL;
+
+ /*
+ * Get vector assignment for this interrupt, set attributes,
+ * and program the IOSAPIC routing table.
+ */
+ vector = iosapic_register_platform_intr(plintsrc->type,
+ plintsrc->global_irq,
+ plintsrc->io_sapic_vector,
+ plintsrc->eid,
+ plintsrc->id,
+ ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) ==
+ ACPI_MADT_POLARITY_ACTIVE_HIGH) ?
+ IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+ ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
+ ACPI_MADT_TRIGGER_EDGE) ?
+ IOSAPIC_EDGE : IOSAPIC_LEVEL);
+
+ platform_intr_list[plintsrc->type] = vector;
+ if (acpi_madt_rev > 1) {
+ acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;
+ }
+
+ /*
+ * Save the physical id, so we can check when its being removed
+ */
+ acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
+
+ return 0;
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+unsigned int can_cpei_retarget(void)
+{
+ extern int cpe_vector;
+ extern unsigned int force_cpei_retarget;
+
+ /*
+ * Only if CPEI is supported and the override flag
+ * is present, otherwise return that its re-targettable
+ * if we are in polling mode.
+ */
+ if (cpe_vector > 0) {
+ if (acpi_cpei_override || force_cpei_retarget)
+ return 1;
+ else
+ return 0;
+ }
+ return 1;
+}
+
+unsigned int is_cpu_cpei_target(unsigned int cpu)
+{
+ unsigned int logical_id;
+
+ logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
+
+ if (logical_id == cpu)
+ return 1;
+ else
+ return 0;
+}
+
+void set_cpei_target_cpu(unsigned int cpu)
+{
+ acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
+}
+#endif
+
+unsigned int get_cpei_target_cpu(void)
+{
+ return acpi_cpei_phys_cpuid;
+}
+
+static int __init
+acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_interrupt_override *p;
+
+ p = (struct acpi_madt_interrupt_override *)header;
+
+ if (BAD_MADT_ENTRY(p, end))
+ return -EINVAL;
+
+ iosapic_override_isa_irq(p->source_irq, p->global_irq,
+ ((p->inti_flags & ACPI_MADT_POLARITY_MASK) ==
+ ACPI_MADT_POLARITY_ACTIVE_LOW) ?
+ IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH,
+ ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
+ ACPI_MADT_TRIGGER_LEVEL) ?
+ IOSAPIC_LEVEL : IOSAPIC_EDGE);
+ return 0;
+}
+
+static int __init
+acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_nmi_source *nmi_src;
+
+ nmi_src = (struct acpi_madt_nmi_source *)header;
+
+ if (BAD_MADT_ENTRY(nmi_src, end))
+ return -EINVAL;
+
+ /* TBD: Support nimsrc entries */
+ return 0;
+}
+
+static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+ if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) {
+
+ /*
+ * Unfortunately ITC_DRIFT is not yet part of the
+ * official SAL spec, so the ITC_DRIFT bit is not
+ * set by the BIOS on this hardware.
+ */
+ sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
+
+ cyclone_setup();
+ }
+}
+
+static int __init acpi_parse_madt(struct acpi_table_header *table)
+{
+ if (!table)
+ return -EINVAL;
+
+ acpi_madt = (struct acpi_table_madt *)table;
+
+ acpi_madt_rev = acpi_madt->header.revision;
+
+ /* remember the value for reference after free_initmem() */
+#ifdef CONFIG_ITANIUM
+ has_8259 = 1; /* Firmware on old Itanium systems is broken */
+#else
+ has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT;
+#endif
+ iosapic_system_init(has_8259);
+
+ /* Get base address of IPI Message Block */
+
+ if (acpi_madt->address)
+ ipi_base_addr = ioremap(acpi_madt->address, 0);
+
+ printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
+
+ acpi_madt_oem_check(acpi_madt->header.oem_id,
+ acpi_madt->header.oem_table_id);
+
+ return 0;
+}
+
+#ifdef CONFIG_ACPI_NUMA
+
+#undef SLIT_DEBUG
+
+#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
+
+static int __initdata srat_num_cpus; /* number of cpus */
+static u32 pxm_flag[PXM_FLAG_LEN];
+#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
+#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
+static struct acpi_table_slit __initdata *slit_table;
+cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
+
+static int __init
+get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm;
+
+ pxm = pa->proximity_domain_lo;
+ if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
+ pxm += pa->proximity_domain_hi[0] << 8;
+ return pxm;
+}
+
+static int __init
+get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
+{
+ int pxm;
+
+ pxm = ma->proximity_domain;
+ if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
+ pxm &= 0xff;
+
+ return pxm;
+}
+
+/*
+ * ACPI 2.0 SLIT (System Locality Information Table)
+ * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
+ */
+void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
+{
+ u32 len;
+
+ len = sizeof(struct acpi_table_header) + 8
+ + slit->locality_count * slit->locality_count;
+ if (slit->header.length != len) {
+ printk(KERN_ERR
+ "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
+ len, slit->header.length);
+ return;
+ }
+ slit_table = slit;
+}
+
+void __init
+acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm;
+
+ if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
+ return;
+
+ if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
+ printk_once(KERN_WARNING
+ "node_cpuid[%ld] is too small, may not be able to use all cpus\n",
+ ARRAY_SIZE(node_cpuid));
+ return;
+ }
+ pxm = get_processor_proximity_domain(pa);
+
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pxm);
+
+ node_cpuid[srat_num_cpus].phys_id =
+ (pa->apic_id << 8) | (pa->local_sapic_eid);
+ /* nid should be overridden as logical node id later */
+ node_cpuid[srat_num_cpus].nid = pxm;
+ cpu_set(srat_num_cpus, early_cpu_possible_map);
+ srat_num_cpus++;
+}
+
+int __init
+acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
+{
+ unsigned long paddr, size;
+ int pxm;
+ struct node_memblk_s *p, *q, *pend;
+
+ pxm = get_memory_proximity_domain(ma);
+
+ /* fill node memory chunk structure */
+ paddr = ma->base_address;
+ size = ma->length;
+
+ /* Ignore disabled entries */
+ if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
+ return -1;
+
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pxm);
+
+ /* Insertion sort based on base address */
+ pend = &node_memblk[num_node_memblks];
+ for (p = &node_memblk[0]; p < pend; p++) {
+ if (paddr < p->start_paddr)
+ break;
+ }
+ if (p < pend) {
+ for (q = pend - 1; q >= p; q--)
+ *(q + 1) = *q;
+ }
+ p->start_paddr = paddr;
+ p->size = size;
+ p->nid = pxm;
+ num_node_memblks++;
+ return 0;
+}
+
+void __init acpi_numa_arch_fixup(void)
+{
+ int i, j, node_from, node_to;
+
+ /* If there's no SRAT, fix the phys_id and mark node 0 online */
+ if (srat_num_cpus == 0) {
+ node_set_online(0);
+ node_cpuid[0].phys_id = hard_smp_processor_id();
+ return;
+ }
+
+ /*
+ * MCD - This can probably be dropped now. No need for pxm ID to node ID
+ * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
+ */
+ nodes_clear(node_online_map);
+ for (i = 0; i < MAX_PXM_DOMAINS; i++) {
+ if (pxm_bit_test(i)) {
+ int nid = acpi_map_pxm_to_node(i);
+ node_set_online(nid);
+ }
+ }
+
+ /* set logical node id in memory chunk structure */
+ for (i = 0; i < num_node_memblks; i++)
+ node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
+
+ /* assign memory bank numbers for each chunk on each node */
+ for_each_online_node(i) {
+ int bank;
+
+ bank = 0;
+ for (j = 0; j < num_node_memblks; j++)
+ if (node_memblk[j].nid == i)
+ node_memblk[j].bank = bank++;
+ }
+
+ /* set logical node id in cpu structure */
+ for_each_possible_early_cpu(i)
+ node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
+
+ printk(KERN_INFO "Number of logical nodes in system = %d\n",
+ num_online_nodes());
+ printk(KERN_INFO "Number of memory chunks in system = %d\n",
+ num_node_memblks);
+
+ if (!slit_table) {
+ for (i = 0; i < MAX_NUMNODES; i++)
+ for (j = 0; j < MAX_NUMNODES; j++)
+ node_distance(i, j) = i == j ? LOCAL_DISTANCE :
+ REMOTE_DISTANCE;
+ return;
+ }
+
+ memset(numa_slit, -1, sizeof(numa_slit));
+ for (i = 0; i < slit_table->locality_count; i++) {
+ if (!pxm_bit_test(i))
+ continue;
+ node_from = pxm_to_node(i);
+ for (j = 0; j < slit_table->locality_count; j++) {
+ if (!pxm_bit_test(j))
+ continue;
+ node_to = pxm_to_node(j);
+ node_distance(node_from, node_to) =
+ slit_table->entry[i * slit_table->locality_count + j];
+ }
+ }
+
+#ifdef SLIT_DEBUG
+ printk("ACPI 2.0 SLIT locality table:\n");
+ for_each_online_node(i) {
+ for_each_online_node(j)
+ printk("%03d ", node_distance(i, j));
+ printk("\n");
+ }
+#endif
+}
+#endif /* CONFIG_ACPI_NUMA */
+
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
+{
+ if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
+ return gsi;
+
+ if (has_8259 && gsi < 16)
+ return isa_irq_to_vector(gsi);
+
+ return iosapic_register_intr(gsi,
+ (polarity ==
+ ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
+ IOSAPIC_POL_LOW,
+ (triggering ==
+ ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
+ IOSAPIC_LEVEL);
+}
+EXPORT_SYMBOL_GPL(acpi_register_gsi);
+
+void acpi_unregister_gsi(u32 gsi)
+{
+ if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
+ return;
+
+ if (has_8259 && gsi < 16)
+ return;
+
+ iosapic_unregister_intr(gsi);
+}
+EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+static int __init acpi_parse_fadt(struct acpi_table_header *table)
+{
+ struct acpi_table_header *fadt_header;
+ struct acpi_table_fadt *fadt;
+
+ if (!table)
+ return -EINVAL;
+
+ fadt_header = (struct acpi_table_header *)table;
+ if (fadt_header->revision != 3)
+ return -ENODEV; /* Only deal with ACPI 2.0 FADT */
+
+ fadt = (struct acpi_table_fadt *)fadt_header;
+
+ acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
+ ACPI_ACTIVE_LOW);
+ return 0;
+}
+
+int __init early_acpi_boot_init(void)
+{
+ int ret;
+
+ /*
+ * do a partial walk of MADT to determine how many CPUs
+ * we have including offline CPUs
+ */
+ if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ return 0;
+ }
+
+ ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
+ acpi_parse_lsapic, NR_CPUS);
+ if (ret < 1)
+ printk(KERN_ERR PREFIX
+ "Error parsing MADT - no LAPIC entries\n");
+ else
+ acpi_lapic = 1;
+
+#ifdef CONFIG_SMP
+ if (available_cpus == 0) {
+ printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
+ printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
+ smp_boot_data.cpu_phys_id[available_cpus] =
+ hard_smp_processor_id();
+ available_cpus = 1; /* We've got@least one of these, no? */
+ }
+ smp_boot_data.cpu_count = available_cpus;
+#endif
+ /* Make boot-up look pretty */
+ printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
+ total_cpus);
+
+ return 0;
+}
+
+int __init acpi_boot_init(void)
+{
+
+ /*
+ * MADT
+ * ----
+ * Parse the Multiple APIC Description Table (MADT), if exists.
+ * Note that this table provides platform SMP configuration
+ * information -- the successor to MPS tables.
+ */
+
+ if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ goto skip_madt;
+ }
+
+ /* Local APIC */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing LAPIC address override entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0)
+ < 0)
+ printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
+
+ /* I/O APIC */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) {
+ if (!ia64_platform_is("sn2"))
+ printk(KERN_ERR PREFIX
+ "Error parsing MADT - no IOSAPIC entries\n");
+ }
+
+ /* System-Level Interrupt Routing */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src,
+ ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing platform interrupt source entry\n");
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing interrupt source overrides entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0)
+ printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
+ skip_madt:
+
+ /*
+ * FADT says whether a legacy keyboard controller is present.
+ * The FADT also contains an SCI_INT line, by which the system
+ * gets interrupts such as power and sleep buttons. If it's not
+ * on a Legacy interrupt, it needs to be setup.
+ */
+ if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
+ printk(KERN_ERR PREFIX "Can't find FADT\n");
+
+#ifdef CONFIG_ACPI_NUMA
+#ifdef CONFIG_SMP
+ if (srat_num_cpus == 0) {
+ int cpu, i = 1;
+ for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
+ if (smp_boot_data.cpu_phys_id[cpu] !=
+ hard_smp_processor_id())
+ node_cpuid[i++].phys_id =
+ smp_boot_data.cpu_phys_id[cpu];
+ }
+#endif
+ build_cpu_to_node_map();
+#endif
+ return 0;
+}
+
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
+{
+ int tmp;
+
+ if (has_8259 && gsi < 16)
+ *irq = isa_irq_to_vector(gsi);
+ else {
+ tmp = gsi_to_irq(gsi);
+ if (tmp == -1)
+ return -1;
+ *irq = tmp;
+ }
+ return 0;
+}
+
+int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
+{
+ if (isa_irq >= 16)
+ return -1;
+ *gsi = isa_irq;
+ return 0;
+}
+
+/*
+ * ACPI based hotplug CPU support
+ */
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
+{
+#ifdef CONFIG_ACPI_NUMA
+ /*
+ * We don't have cpu-only-node hotadd. But if the system equips
+ * SRAT table, pxm is already found and node is ready.
+ * So, just pxm_to_nid(pxm) is OK.
+ * This code here is for the system which doesn't have full SRAT
+ * table for possible cpus.
+ */
+ node_cpuid[cpu].phys_id = physid;
+ node_cpuid[cpu].nid = acpi_get_node(handle);
+#endif
+ return 0;
+}
+
+int additional_cpus __initdata = -1;
+
+static __init int setup_additional_cpus(char *s)
+{
+ if (s)
+ additional_cpus = simple_strtol(s, NULL, 0);
+
+ return 0;
+}
+
+early_param("additional_cpus", setup_additional_cpus);
+
+/*
+ * cpu_possible_mask should be static, it cannot change as CPUs
+ * are onlined, or offlined. The reason is per-cpu data-structures
+ * are allocated by some modules at init time, and dont expect to
+ * do this dynamically on cpu arrival/departure.
+ * cpu_present_mask on the other hand can change dynamically.
+ * In case when cpu_hotplug is not compiled, then we resort to current
+ * behaviour, which is cpu_possible == cpu_present.
+ * - Ashok Raj
+ *
+ * Three ways to find out the number of additional hotplug CPUs:
+ * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
+ * - The user can overwrite it with additional_cpus=NUM
+ * - Otherwise don't reserve additional CPUs.
+ */
+__init void prefill_possible_map(void)
+{
+ int i;
+ int possible, disabled_cpus;
+
+ disabled_cpus = total_cpus - available_cpus;
+
+ if (additional_cpus == -1) {
+ if (disabled_cpus > 0)
+ additional_cpus = disabled_cpus;
+ else
+ additional_cpus = 0;
+ }
+
+ possible = available_cpus + additional_cpus;
+
+ if (possible > nr_cpu_ids)
+ possible = nr_cpu_ids;
+
+ printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
+ possible, max((possible - available_cpus), 0));
+
+ for (i = 0; i < possible; i++)
+ set_cpu_possible(i, true);
+}
+
+static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
+{
+ cpumask_t tmp_map;
+ int cpu;
+
+ cpumask_complement(&tmp_map, cpu_present_mask);
+ cpu = cpumask_first(&tmp_map);
+ if (cpu >= nr_cpu_ids)
+ return -EINVAL;
+
+ acpi_map_cpu2node(handle, cpu, physid);
+
+ set_cpu_present(cpu, true);
+ ia64_cpu_to_sapicid[cpu] = physid;
+
+ acpi_processor_set_pdc(handle);
+
+ *pcpu = cpu;
+ return (0);
+}
+
+/* wrapper to silence section mismatch warning */
+int __ref acpi_map_cpu(acpi_handle handle, int physid, int *pcpu)
+{
+ return _acpi_map_lsapic(handle, physid, pcpu);
+}
+EXPORT_SYMBOL(acpi_map_cpu);
+
+int acpi_unmap_cpu(int cpu)
+{
+ ia64_cpu_to_sapicid[cpu] = -1;
+ set_cpu_present(cpu, false);
+
+#ifdef CONFIG_ACPI_NUMA
+ /* NUMA specific cleanup's */
+#endif
+
+ return (0);
+}
+EXPORT_SYMBOL(acpi_unmap_cpu);
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+#ifdef CONFIG_ACPI_NUMA
+static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth,
+ void *context, void **ret)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ struct acpi_madt_io_sapic *iosapic;
+ unsigned int gsi_base;
+ int node;
+
+ /* Only care about objects w/ a method that returns the MADT */
+ if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
+ return AE_OK;
+
+ if (!buffer.length || !buffer.pointer)
+ return AE_OK;
+
+ obj = buffer.pointer;
+ if (obj->type != ACPI_TYPE_BUFFER ||
+ obj->buffer.length < sizeof(*iosapic)) {
+ kfree(buffer.pointer);
+ return AE_OK;
+ }
+
+ iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
+
+ if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
+ kfree(buffer.pointer);
+ return AE_OK;
+ }
+
+ gsi_base = iosapic->global_irq_base;
+
+ kfree(buffer.pointer);
+
+ /* OK, it's an IOSAPIC MADT entry; associate it with a node */
+ node = acpi_get_node(handle);
+ if (node == NUMA_NO_NODE || !node_online(node) ||
+ cpumask_empty(cpumask_of_node(node)))
+ return AE_OK;
+
+ /* We know a gsi to node mapping! */
+ map_iosapic_to_node(gsi_base, node);
+ return AE_OK;
+}
+
+static int __init
+acpi_map_iosapics (void)
+{
+ acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
+ return 0;
+}
+
+fs_initcall(acpi_map_iosapics);
+#endif /* CONFIG_ACPI_NUMA */
+
+int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+ int err;
+
+ if ((err = iosapic_init(phys_addr, gsi_base)))
+ return err;
+
+#ifdef CONFIG_ACPI_NUMA
+ acpi_map_iosapic(handle, 0, NULL, NULL);
+#endif /* CONFIG_ACPI_NUMA */
+
+ return 0;
+}
+
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
+{
+ return iosapic_remove(gsi_base);
+}
+
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
+/*
+ * acpi_suspend_lowlevel() - save kernel state and suspend.
+ *
+ * TBD when when IA64 starts to support suspend...
+ */
+int acpi_suspend_lowlevel(void) { return 0; }
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 1/7] ia64: ACPI: move kernel acpi files to a directory
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In preparation for adding some additional arch-dependent ACPI files,
move the existing ones to a directory to try to keep clutter down in
the arch/ia64/kernel directory.
There is no functional change. This patch only moves source files.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/ia64/kernel/Makefile | 2 +-
arch/ia64/kernel/acpi-ext.c | 104 ----
arch/ia64/kernel/acpi.c | 1000 --------------------------------------
arch/ia64/kernel/acpi/Makefile | 1 +
arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
6 files changed, 1106 insertions(+), 1105 deletions(-)
delete mode 100644 arch/ia64/kernel/acpi-ext.c
delete mode 100644 arch/ia64/kernel/acpi.c
create mode 100644 arch/ia64/kernel/acpi/Makefile
create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
create mode 100644 arch/ia64/kernel/acpi/acpi.c
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 20678a9..2218842 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -13,7 +13,7 @@ obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64
salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
unwind.o mca.o mca_asm.o topology.o dma-mapping.o
-obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
+obj-y += acpi/
obj-$(CONFIG_IA64_BRL_EMU) += brl_emu.o
obj-$(CONFIG_IA64_PALINFO) += palinfo.o
diff --git a/arch/ia64/kernel/acpi-ext.c b/arch/ia64/kernel/acpi-ext.c
deleted file mode 100644
index 8b9318d..0000000
--- a/arch/ia64/kernel/acpi-ext.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P.
- * Alex Williamson <alex.williamson@hp.com>
- * Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/acpi.h>
-
-#include <asm/acpi-ext.h>
-
-/*
- * Device CSRs that do not appear in PCI config space should be described
- * via ACPI. This would normally be done with Address Space Descriptors
- * marked as "consumer-only," but old versions of Windows and Linux ignore
- * the producer/consumer flag, so HP invented a vendor-defined resource to
- * describe the location and size of CSR space.
- */
-
-struct acpi_vendor_uuid hp_ccsr_uuid = {
- .subtype = 2,
- .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
- 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
-};
-
-static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)
-{
- acpi_status status;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- struct acpi_resource *resource;
- struct acpi_resource_vendor_typed *vendor;
-
- status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS, &hp_ccsr_uuid,
- &buffer);
-
- resource = buffer.pointer;
- vendor = &resource->data.vendor_typed;
-
- if (ACPI_FAILURE(status) || vendor->byte_length < 16) {
- status = AE_NOT_FOUND;
- goto exit;
- }
-
- memcpy(base, vendor->byte_data, sizeof(*base));
- memcpy(length, vendor->byte_data + 8, sizeof(*length));
-
- exit:
- kfree(buffer.pointer);
- return status;
-}
-
-struct csr_space {
- u64 base;
- u64 length;
-};
-
-static acpi_status find_csr_space(struct acpi_resource *resource, void *data)
-{
- struct csr_space *space = data;
- struct acpi_resource_address64 addr;
- acpi_status status;
-
- status = acpi_resource_to_address64(resource, &addr);
- if (ACPI_SUCCESS(status) &&
- addr.resource_type = ACPI_MEMORY_RANGE &&
- addr.address_length &&
- addr.producer_consumer = ACPI_CONSUMER) {
- space->base = addr.minimum;
- space->length = addr.address_length;
- return AE_CTRL_TERMINATE;
- }
- return AE_OK; /* keep looking */
-}
-
-static acpi_status hp_crs_locate(acpi_handle obj, u64 *base, u64 *length)
-{
- struct csr_space space = { 0, 0 };
-
- acpi_walk_resources(obj, METHOD_NAME__CRS, find_csr_space, &space);
- if (!space.length)
- return AE_NOT_FOUND;
-
- *base = space.base;
- *length = space.length;
- return AE_OK;
-}
-
-acpi_status hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
-{
- acpi_status status;
-
- status = hp_ccsr_locate(obj, csr_base, csr_length);
- if (ACPI_SUCCESS(status))
- return status;
-
- return hp_crs_locate(obj, csr_base, csr_length);
-}
-EXPORT_SYMBOL(hp_acpi_csr_space);
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
deleted file mode 100644
index e795cb8..0000000
--- a/arch/ia64/kernel/acpi.c
+++ /dev/null
@@ -1,1000 +0,0 @@
-/*
- * acpi.c - Architecture-Specific Low-Level ACPI Support
- *
- * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
- * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
- * David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 2000 Intel Corp.
- * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
- * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
- * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
- * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
- * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
- * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/irq.h>
-#include <linux/acpi.h>
-#include <linux/efi.h>
-#include <linux/mmzone.h>
-#include <linux/nodemask.h>
-#include <linux/slab.h>
-#include <acpi/processor.h>
-#include <asm/io.h>
-#include <asm/iosapic.h>
-#include <asm/machvec.h>
-#include <asm/page.h>
-#include <asm/numa.h>
-#include <asm/sal.h>
-#include <asm/cyclone.h>
-
-#define PREFIX "ACPI: "
-
-int acpi_lapic;
-unsigned int acpi_cpei_override;
-unsigned int acpi_cpei_phys_cpuid;
-
-unsigned long acpi_wakeup_address = 0;
-
-#ifdef CONFIG_IA64_GENERIC
-static unsigned long __init acpi_find_rsdp(void)
-{
- unsigned long rsdp_phys = 0;
-
- if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
- rsdp_phys = efi.acpi20;
- else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
- printk(KERN_WARNING PREFIX
- "v1.0/r0.71 tables no longer supported\n");
- return rsdp_phys;
-}
-
-const char __init *
-acpi_get_sysname(void)
-{
- unsigned long rsdp_phys;
- struct acpi_table_rsdp *rsdp;
- struct acpi_table_xsdt *xsdt;
- struct acpi_table_header *hdr;
-#ifdef CONFIG_INTEL_IOMMU
- u64 i, nentries;
-#endif
-
- rsdp_phys = acpi_find_rsdp();
- if (!rsdp_phys) {
- printk(KERN_ERR
- "ACPI 2.0 RSDP not found, default to \"dig\"\n");
- return "dig";
- }
-
- rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys);
- if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
- printk(KERN_ERR
- "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
- return "dig";
- }
-
- xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
- hdr = &xsdt->header;
- if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) {
- printk(KERN_ERR
- "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
- return "dig";
- }
-
- if (!strcmp(hdr->oem_id, "HP")) {
- return "hpzx1";
- } else if (!strcmp(hdr->oem_id, "SGI")) {
- if (!strcmp(hdr->oem_table_id + 4, "UV"))
- return "uv";
- else
- return "sn2";
- }
-
-#ifdef CONFIG_INTEL_IOMMU
- /* Look for Intel IOMMU */
- nentries = (hdr->length - sizeof(*hdr)) /
- sizeof(xsdt->table_offset_entry[0]);
- for (i = 0; i < nentries; i++) {
- hdr = __va(xsdt->table_offset_entry[i]);
- if (strncmp(hdr->signature, ACPI_SIG_DMAR,
- sizeof(ACPI_SIG_DMAR) - 1) = 0)
- return "dig_vtd";
- }
-#endif
-
- return "dig";
-}
-#endif /* CONFIG_IA64_GENERIC */
-
-#define ACPI_MAX_PLATFORM_INTERRUPTS 256
-
-/* Array to record platform interrupt vectors for generic interrupt routing. */
-int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
- [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
-};
-
-enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
-
-/*
- * Interrupt routing API for device drivers. Provides interrupt vector for
- * a generic platform event. Currently only CPEI is implemented.
- */
-int acpi_request_vector(u32 int_type)
-{
- int vector = -1;
-
- if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
- /* corrected platform error interrupt */
- vector = platform_intr_list[int_type];
- } else
- printk(KERN_ERR
- "acpi_request_vector(): invalid interrupt type\n");
- return vector;
-}
-
-char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
-{
- return __va(phys_addr);
-}
-
-void __init __acpi_unmap_table(char *map, unsigned long size)
-{
-}
-
-/* --------------------------------------------------------------------------
- Boot-time Table Parsing
- -------------------------------------------------------------------------- */
-
-static int available_cpus __initdata;
-struct acpi_table_madt *acpi_madt __initdata;
-static u8 has_8259;
-
-static int __init
-acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_local_apic_override *lapic;
-
- lapic = (struct acpi_madt_local_apic_override *)header;
-
- if (BAD_MADT_ENTRY(lapic, end))
- return -EINVAL;
-
- if (lapic->address) {
- iounmap(ipi_base_addr);
- ipi_base_addr = ioremap(lapic->address, 0);
- }
- return 0;
-}
-
-static int __init
-acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_local_sapic *lsapic;
-
- lsapic = (struct acpi_madt_local_sapic *)header;
-
- /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */
-
- if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
-#ifdef CONFIG_SMP
- smp_boot_data.cpu_phys_id[available_cpus] - (lsapic->id << 8) | lsapic->eid;
-#endif
- ++available_cpus;
- }
-
- total_cpus++;
- return 0;
-}
-
-static int __init
-acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_local_apic_nmi *lacpi_nmi;
-
- lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header;
-
- if (BAD_MADT_ENTRY(lacpi_nmi, end))
- return -EINVAL;
-
- /* TBD: Support lapic_nmi entries */
- return 0;
-}
-
-static int __init
-acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_io_sapic *iosapic;
-
- iosapic = (struct acpi_madt_io_sapic *)header;
-
- if (BAD_MADT_ENTRY(iosapic, end))
- return -EINVAL;
-
- return iosapic_init(iosapic->address, iosapic->global_irq_base);
-}
-
-static unsigned int __initdata acpi_madt_rev;
-
-static int __init
-acpi_parse_plat_int_src(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_interrupt_source *plintsrc;
- int vector;
-
- plintsrc = (struct acpi_madt_interrupt_source *)header;
-
- if (BAD_MADT_ENTRY(plintsrc, end))
- return -EINVAL;
-
- /*
- * Get vector assignment for this interrupt, set attributes,
- * and program the IOSAPIC routing table.
- */
- vector = iosapic_register_platform_intr(plintsrc->type,
- plintsrc->global_irq,
- plintsrc->io_sapic_vector,
- plintsrc->eid,
- plintsrc->id,
- ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) =
- ACPI_MADT_POLARITY_ACTIVE_HIGH) ?
- IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
- ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) =
- ACPI_MADT_TRIGGER_EDGE) ?
- IOSAPIC_EDGE : IOSAPIC_LEVEL);
-
- platform_intr_list[plintsrc->type] = vector;
- if (acpi_madt_rev > 1) {
- acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;
- }
-
- /*
- * Save the physical id, so we can check when its being removed
- */
- acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
-
- return 0;
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-unsigned int can_cpei_retarget(void)
-{
- extern int cpe_vector;
- extern unsigned int force_cpei_retarget;
-
- /*
- * Only if CPEI is supported and the override flag
- * is present, otherwise return that its re-targettable
- * if we are in polling mode.
- */
- if (cpe_vector > 0) {
- if (acpi_cpei_override || force_cpei_retarget)
- return 1;
- else
- return 0;
- }
- return 1;
-}
-
-unsigned int is_cpu_cpei_target(unsigned int cpu)
-{
- unsigned int logical_id;
-
- logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
-
- if (logical_id = cpu)
- return 1;
- else
- return 0;
-}
-
-void set_cpei_target_cpu(unsigned int cpu)
-{
- acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
-}
-#endif
-
-unsigned int get_cpei_target_cpu(void)
-{
- return acpi_cpei_phys_cpuid;
-}
-
-static int __init
-acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_madt_interrupt_override *p;
-
- p = (struct acpi_madt_interrupt_override *)header;
-
- if (BAD_MADT_ENTRY(p, end))
- return -EINVAL;
-
- iosapic_override_isa_irq(p->source_irq, p->global_irq,
- ((p->inti_flags & ACPI_MADT_POLARITY_MASK) =
- ACPI_MADT_POLARITY_ACTIVE_LOW) ?
- IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH,
- ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) =
- ACPI_MADT_TRIGGER_LEVEL) ?
- IOSAPIC_LEVEL : IOSAPIC_EDGE);
- return 0;
-}
-
-static int __init
-acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_madt_nmi_source *nmi_src;
-
- nmi_src = (struct acpi_madt_nmi_source *)header;
-
- if (BAD_MADT_ENTRY(nmi_src, end))
- return -EINVAL;
-
- /* TBD: Support nimsrc entries */
- return 0;
-}
-
-static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
-{
- if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) {
-
- /*
- * Unfortunately ITC_DRIFT is not yet part of the
- * official SAL spec, so the ITC_DRIFT bit is not
- * set by the BIOS on this hardware.
- */
- sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
-
- cyclone_setup();
- }
-}
-
-static int __init acpi_parse_madt(struct acpi_table_header *table)
-{
- if (!table)
- return -EINVAL;
-
- acpi_madt = (struct acpi_table_madt *)table;
-
- acpi_madt_rev = acpi_madt->header.revision;
-
- /* remember the value for reference after free_initmem() */
-#ifdef CONFIG_ITANIUM
- has_8259 = 1; /* Firmware on old Itanium systems is broken */
-#else
- has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT;
-#endif
- iosapic_system_init(has_8259);
-
- /* Get base address of IPI Message Block */
-
- if (acpi_madt->address)
- ipi_base_addr = ioremap(acpi_madt->address, 0);
-
- printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
-
- acpi_madt_oem_check(acpi_madt->header.oem_id,
- acpi_madt->header.oem_table_id);
-
- return 0;
-}
-
-#ifdef CONFIG_ACPI_NUMA
-
-#undef SLIT_DEBUG
-
-#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
-
-static int __initdata srat_num_cpus; /* number of cpus */
-static u32 pxm_flag[PXM_FLAG_LEN];
-#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
-#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
-static struct acpi_table_slit __initdata *slit_table;
-cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
-
-static int __init
-get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
-{
- int pxm;
-
- pxm = pa->proximity_domain_lo;
- if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
- pxm += pa->proximity_domain_hi[0] << 8;
- return pxm;
-}
-
-static int __init
-get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
-{
- int pxm;
-
- pxm = ma->proximity_domain;
- if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
- pxm &= 0xff;
-
- return pxm;
-}
-
-/*
- * ACPI 2.0 SLIT (System Locality Information Table)
- * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
- */
-void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
-{
- u32 len;
-
- len = sizeof(struct acpi_table_header) + 8
- + slit->locality_count * slit->locality_count;
- if (slit->header.length != len) {
- printk(KERN_ERR
- "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
- len, slit->header.length);
- return;
- }
- slit_table = slit;
-}
-
-void __init
-acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
-{
- int pxm;
-
- if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
- return;
-
- if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
- printk_once(KERN_WARNING
- "node_cpuid[%ld] is too small, may not be able to use all cpus\n",
- ARRAY_SIZE(node_cpuid));
- return;
- }
- pxm = get_processor_proximity_domain(pa);
-
- /* record this node in proximity bitmap */
- pxm_bit_set(pxm);
-
- node_cpuid[srat_num_cpus].phys_id - (pa->apic_id << 8) | (pa->local_sapic_eid);
- /* nid should be overridden as logical node id later */
- node_cpuid[srat_num_cpus].nid = pxm;
- cpu_set(srat_num_cpus, early_cpu_possible_map);
- srat_num_cpus++;
-}
-
-int __init
-acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
-{
- unsigned long paddr, size;
- int pxm;
- struct node_memblk_s *p, *q, *pend;
-
- pxm = get_memory_proximity_domain(ma);
-
- /* fill node memory chunk structure */
- paddr = ma->base_address;
- size = ma->length;
-
- /* Ignore disabled entries */
- if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
- return -1;
-
- /* record this node in proximity bitmap */
- pxm_bit_set(pxm);
-
- /* Insertion sort based on base address */
- pend = &node_memblk[num_node_memblks];
- for (p = &node_memblk[0]; p < pend; p++) {
- if (paddr < p->start_paddr)
- break;
- }
- if (p < pend) {
- for (q = pend - 1; q >= p; q--)
- *(q + 1) = *q;
- }
- p->start_paddr = paddr;
- p->size = size;
- p->nid = pxm;
- num_node_memblks++;
- return 0;
-}
-
-void __init acpi_numa_arch_fixup(void)
-{
- int i, j, node_from, node_to;
-
- /* If there's no SRAT, fix the phys_id and mark node 0 online */
- if (srat_num_cpus = 0) {
- node_set_online(0);
- node_cpuid[0].phys_id = hard_smp_processor_id();
- return;
- }
-
- /*
- * MCD - This can probably be dropped now. No need for pxm ID to node ID
- * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
- */
- nodes_clear(node_online_map);
- for (i = 0; i < MAX_PXM_DOMAINS; i++) {
- if (pxm_bit_test(i)) {
- int nid = acpi_map_pxm_to_node(i);
- node_set_online(nid);
- }
- }
-
- /* set logical node id in memory chunk structure */
- for (i = 0; i < num_node_memblks; i++)
- node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
-
- /* assign memory bank numbers for each chunk on each node */
- for_each_online_node(i) {
- int bank;
-
- bank = 0;
- for (j = 0; j < num_node_memblks; j++)
- if (node_memblk[j].nid = i)
- node_memblk[j].bank = bank++;
- }
-
- /* set logical node id in cpu structure */
- for_each_possible_early_cpu(i)
- node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
-
- printk(KERN_INFO "Number of logical nodes in system = %d\n",
- num_online_nodes());
- printk(KERN_INFO "Number of memory chunks in system = %d\n",
- num_node_memblks);
-
- if (!slit_table) {
- for (i = 0; i < MAX_NUMNODES; i++)
- for (j = 0; j < MAX_NUMNODES; j++)
- node_distance(i, j) = i = j ? LOCAL_DISTANCE :
- REMOTE_DISTANCE;
- return;
- }
-
- memset(numa_slit, -1, sizeof(numa_slit));
- for (i = 0; i < slit_table->locality_count; i++) {
- if (!pxm_bit_test(i))
- continue;
- node_from = pxm_to_node(i);
- for (j = 0; j < slit_table->locality_count; j++) {
- if (!pxm_bit_test(j))
- continue;
- node_to = pxm_to_node(j);
- node_distance(node_from, node_to) - slit_table->entry[i * slit_table->locality_count + j];
- }
- }
-
-#ifdef SLIT_DEBUG
- printk("ACPI 2.0 SLIT locality table:\n");
- for_each_online_node(i) {
- for_each_online_node(j)
- printk("%03d ", node_distance(i, j));
- printk("\n");
- }
-#endif
-}
-#endif /* CONFIG_ACPI_NUMA */
-
-/*
- * success: return IRQ number (>=0)
- * failure: return < 0
- */
-int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
-{
- if (acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM)
- return gsi;
-
- if (has_8259 && gsi < 16)
- return isa_irq_to_vector(gsi);
-
- return iosapic_register_intr(gsi,
- (polarity =
- ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
- IOSAPIC_POL_LOW,
- (triggering =
- ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
- IOSAPIC_LEVEL);
-}
-EXPORT_SYMBOL_GPL(acpi_register_gsi);
-
-void acpi_unregister_gsi(u32 gsi)
-{
- if (acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM)
- return;
-
- if (has_8259 && gsi < 16)
- return;
-
- iosapic_unregister_intr(gsi);
-}
-EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
-
-static int __init acpi_parse_fadt(struct acpi_table_header *table)
-{
- struct acpi_table_header *fadt_header;
- struct acpi_table_fadt *fadt;
-
- if (!table)
- return -EINVAL;
-
- fadt_header = (struct acpi_table_header *)table;
- if (fadt_header->revision != 3)
- return -ENODEV; /* Only deal with ACPI 2.0 FADT */
-
- fadt = (struct acpi_table_fadt *)fadt_header;
-
- acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
- ACPI_ACTIVE_LOW);
- return 0;
-}
-
-int __init early_acpi_boot_init(void)
-{
- int ret;
-
- /*
- * do a partial walk of MADT to determine how many CPUs
- * we have including offline CPUs
- */
- if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
- printk(KERN_ERR PREFIX "Can't find MADT\n");
- return 0;
- }
-
- ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
- acpi_parse_lsapic, NR_CPUS);
- if (ret < 1)
- printk(KERN_ERR PREFIX
- "Error parsing MADT - no LAPIC entries\n");
- else
- acpi_lapic = 1;
-
-#ifdef CONFIG_SMP
- if (available_cpus = 0) {
- printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
- printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
- smp_boot_data.cpu_phys_id[available_cpus] - hard_smp_processor_id();
- available_cpus = 1; /* We've got at least one of these, no? */
- }
- smp_boot_data.cpu_count = available_cpus;
-#endif
- /* Make boot-up look pretty */
- printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
- total_cpus);
-
- return 0;
-}
-
-int __init acpi_boot_init(void)
-{
-
- /*
- * MADT
- * ----
- * Parse the Multiple APIC Description Table (MADT), if exists.
- * Note that this table provides platform SMP configuration
- * information -- the successor to MPS tables.
- */
-
- if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
- printk(KERN_ERR PREFIX "Can't find MADT\n");
- goto skip_madt;
- }
-
- /* Local APIC */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing LAPIC address override entry\n");
-
- if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0)
- < 0)
- printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
-
- /* I/O APIC */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) {
- if (!ia64_platform_is("sn2"))
- printk(KERN_ERR PREFIX
- "Error parsing MADT - no IOSAPIC entries\n");
- }
-
- /* System-Level Interrupt Routing */
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src,
- ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing platform interrupt source entry\n");
-
- if (acpi_table_parse_madt
- (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0)
- printk(KERN_ERR PREFIX
- "Error parsing interrupt source overrides entry\n");
-
- if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0)
- printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
- skip_madt:
-
- /*
- * FADT says whether a legacy keyboard controller is present.
- * The FADT also contains an SCI_INT line, by which the system
- * gets interrupts such as power and sleep buttons. If it's not
- * on a Legacy interrupt, it needs to be setup.
- */
- if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
- printk(KERN_ERR PREFIX "Can't find FADT\n");
-
-#ifdef CONFIG_ACPI_NUMA
-#ifdef CONFIG_SMP
- if (srat_num_cpus = 0) {
- int cpu, i = 1;
- for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
- if (smp_boot_data.cpu_phys_id[cpu] !- hard_smp_processor_id())
- node_cpuid[i++].phys_id - smp_boot_data.cpu_phys_id[cpu];
- }
-#endif
- build_cpu_to_node_map();
-#endif
- return 0;
-}
-
-int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
-{
- int tmp;
-
- if (has_8259 && gsi < 16)
- *irq = isa_irq_to_vector(gsi);
- else {
- tmp = gsi_to_irq(gsi);
- if (tmp = -1)
- return -1;
- *irq = tmp;
- }
- return 0;
-}
-
-int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
-{
- if (isa_irq >= 16)
- return -1;
- *gsi = isa_irq;
- return 0;
-}
-
-/*
- * ACPI based hotplug CPU support
- */
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
-static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
-{
-#ifdef CONFIG_ACPI_NUMA
- /*
- * We don't have cpu-only-node hotadd. But if the system equips
- * SRAT table, pxm is already found and node is ready.
- * So, just pxm_to_nid(pxm) is OK.
- * This code here is for the system which doesn't have full SRAT
- * table for possible cpus.
- */
- node_cpuid[cpu].phys_id = physid;
- node_cpuid[cpu].nid = acpi_get_node(handle);
-#endif
- return 0;
-}
-
-int additional_cpus __initdata = -1;
-
-static __init int setup_additional_cpus(char *s)
-{
- if (s)
- additional_cpus = simple_strtol(s, NULL, 0);
-
- return 0;
-}
-
-early_param("additional_cpus", setup_additional_cpus);
-
-/*
- * cpu_possible_mask should be static, it cannot change as CPUs
- * are onlined, or offlined. The reason is per-cpu data-structures
- * are allocated by some modules at init time, and dont expect to
- * do this dynamically on cpu arrival/departure.
- * cpu_present_mask on the other hand can change dynamically.
- * In case when cpu_hotplug is not compiled, then we resort to current
- * behaviour, which is cpu_possible = cpu_present.
- * - Ashok Raj
- *
- * Three ways to find out the number of additional hotplug CPUs:
- * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
- * - The user can overwrite it with additional_cpus=NUM
- * - Otherwise don't reserve additional CPUs.
- */
-__init void prefill_possible_map(void)
-{
- int i;
- int possible, disabled_cpus;
-
- disabled_cpus = total_cpus - available_cpus;
-
- if (additional_cpus = -1) {
- if (disabled_cpus > 0)
- additional_cpus = disabled_cpus;
- else
- additional_cpus = 0;
- }
-
- possible = available_cpus + additional_cpus;
-
- if (possible > nr_cpu_ids)
- possible = nr_cpu_ids;
-
- printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
- possible, max((possible - available_cpus), 0));
-
- for (i = 0; i < possible; i++)
- set_cpu_possible(i, true);
-}
-
-static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
-{
- cpumask_t tmp_map;
- int cpu;
-
- cpumask_complement(&tmp_map, cpu_present_mask);
- cpu = cpumask_first(&tmp_map);
- if (cpu >= nr_cpu_ids)
- return -EINVAL;
-
- acpi_map_cpu2node(handle, cpu, physid);
-
- set_cpu_present(cpu, true);
- ia64_cpu_to_sapicid[cpu] = physid;
-
- acpi_processor_set_pdc(handle);
-
- *pcpu = cpu;
- return (0);
-}
-
-/* wrapper to silence section mismatch warning */
-int __ref acpi_map_cpu(acpi_handle handle, int physid, int *pcpu)
-{
- return _acpi_map_lsapic(handle, physid, pcpu);
-}
-EXPORT_SYMBOL(acpi_map_cpu);
-
-int acpi_unmap_cpu(int cpu)
-{
- ia64_cpu_to_sapicid[cpu] = -1;
- set_cpu_present(cpu, false);
-
-#ifdef CONFIG_ACPI_NUMA
- /* NUMA specific cleanup's */
-#endif
-
- return (0);
-}
-EXPORT_SYMBOL(acpi_unmap_cpu);
-#endif /* CONFIG_ACPI_HOTPLUG_CPU */
-
-#ifdef CONFIG_ACPI_NUMA
-static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth,
- void *context, void **ret)
-{
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *obj;
- struct acpi_madt_io_sapic *iosapic;
- unsigned int gsi_base;
- int node;
-
- /* Only care about objects w/ a method that returns the MADT */
- if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
- return AE_OK;
-
- if (!buffer.length || !buffer.pointer)
- return AE_OK;
-
- obj = buffer.pointer;
- if (obj->type != ACPI_TYPE_BUFFER ||
- obj->buffer.length < sizeof(*iosapic)) {
- kfree(buffer.pointer);
- return AE_OK;
- }
-
- iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
-
- if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
- kfree(buffer.pointer);
- return AE_OK;
- }
-
- gsi_base = iosapic->global_irq_base;
-
- kfree(buffer.pointer);
-
- /* OK, it's an IOSAPIC MADT entry; associate it with a node */
- node = acpi_get_node(handle);
- if (node = NUMA_NO_NODE || !node_online(node) ||
- cpumask_empty(cpumask_of_node(node)))
- return AE_OK;
-
- /* We know a gsi to node mapping! */
- map_iosapic_to_node(gsi_base, node);
- return AE_OK;
-}
-
-static int __init
-acpi_map_iosapics (void)
-{
- acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
- return 0;
-}
-
-fs_initcall(acpi_map_iosapics);
-#endif /* CONFIG_ACPI_NUMA */
-
-int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
-{
- int err;
-
- if ((err = iosapic_init(phys_addr, gsi_base)))
- return err;
-
-#ifdef CONFIG_ACPI_NUMA
- acpi_map_iosapic(handle, 0, NULL, NULL);
-#endif /* CONFIG_ACPI_NUMA */
-
- return 0;
-}
-
-EXPORT_SYMBOL(acpi_register_ioapic);
-
-int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
-{
- return iosapic_remove(gsi_base);
-}
-
-EXPORT_SYMBOL(acpi_unregister_ioapic);
-
-/*
- * acpi_suspend_lowlevel() - save kernel state and suspend.
- *
- * TBD when when IA64 starts to support suspend...
- */
-int acpi_suspend_lowlevel(void) { return 0; }
diff --git a/arch/ia64/kernel/acpi/Makefile b/arch/ia64/kernel/acpi/Makefile
new file mode 100644
index 0000000..8c12745
--- /dev/null
+++ b/arch/ia64/kernel/acpi/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
diff --git a/arch/ia64/kernel/acpi/acpi-ext.c b/arch/ia64/kernel/acpi/acpi-ext.c
new file mode 100644
index 0000000..8b9318d
--- /dev/null
+++ b/arch/ia64/kernel/acpi/acpi-ext.c
@@ -0,0 +1,104 @@
+/*
+ * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P.
+ * Alex Williamson <alex.williamson@hp.com>
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+
+#include <asm/acpi-ext.h>
+
+/*
+ * Device CSRs that do not appear in PCI config space should be described
+ * via ACPI. This would normally be done with Address Space Descriptors
+ * marked as "consumer-only," but old versions of Windows and Linux ignore
+ * the producer/consumer flag, so HP invented a vendor-defined resource to
+ * describe the location and size of CSR space.
+ */
+
+struct acpi_vendor_uuid hp_ccsr_uuid = {
+ .subtype = 2,
+ .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
+ 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
+};
+
+static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)
+{
+ acpi_status status;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_resource *resource;
+ struct acpi_resource_vendor_typed *vendor;
+
+ status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS, &hp_ccsr_uuid,
+ &buffer);
+
+ resource = buffer.pointer;
+ vendor = &resource->data.vendor_typed;
+
+ if (ACPI_FAILURE(status) || vendor->byte_length < 16) {
+ status = AE_NOT_FOUND;
+ goto exit;
+ }
+
+ memcpy(base, vendor->byte_data, sizeof(*base));
+ memcpy(length, vendor->byte_data + 8, sizeof(*length));
+
+ exit:
+ kfree(buffer.pointer);
+ return status;
+}
+
+struct csr_space {
+ u64 base;
+ u64 length;
+};
+
+static acpi_status find_csr_space(struct acpi_resource *resource, void *data)
+{
+ struct csr_space *space = data;
+ struct acpi_resource_address64 addr;
+ acpi_status status;
+
+ status = acpi_resource_to_address64(resource, &addr);
+ if (ACPI_SUCCESS(status) &&
+ addr.resource_type = ACPI_MEMORY_RANGE &&
+ addr.address_length &&
+ addr.producer_consumer = ACPI_CONSUMER) {
+ space->base = addr.minimum;
+ space->length = addr.address_length;
+ return AE_CTRL_TERMINATE;
+ }
+ return AE_OK; /* keep looking */
+}
+
+static acpi_status hp_crs_locate(acpi_handle obj, u64 *base, u64 *length)
+{
+ struct csr_space space = { 0, 0 };
+
+ acpi_walk_resources(obj, METHOD_NAME__CRS, find_csr_space, &space);
+ if (!space.length)
+ return AE_NOT_FOUND;
+
+ *base = space.base;
+ *length = space.length;
+ return AE_OK;
+}
+
+acpi_status hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
+{
+ acpi_status status;
+
+ status = hp_ccsr_locate(obj, csr_base, csr_length);
+ if (ACPI_SUCCESS(status))
+ return status;
+
+ return hp_crs_locate(obj, csr_base, csr_length);
+}
+EXPORT_SYMBOL(hp_acpi_csr_space);
diff --git a/arch/ia64/kernel/acpi/acpi.c b/arch/ia64/kernel/acpi/acpi.c
new file mode 100644
index 0000000..e795cb8
--- /dev/null
+++ b/arch/ia64/kernel/acpi/acpi.c
@@ -0,0 +1,1000 @@
+/*
+ * acpi.c - Architecture-Specific Low-Level ACPI Support
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
+ * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2000 Intel Corp.
+ * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
+ * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
+ * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
+ * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
+ * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+#include <linux/acpi.h>
+#include <linux/efi.h>
+#include <linux/mmzone.h>
+#include <linux/nodemask.h>
+#include <linux/slab.h>
+#include <acpi/processor.h>
+#include <asm/io.h>
+#include <asm/iosapic.h>
+#include <asm/machvec.h>
+#include <asm/page.h>
+#include <asm/numa.h>
+#include <asm/sal.h>
+#include <asm/cyclone.h>
+
+#define PREFIX "ACPI: "
+
+int acpi_lapic;
+unsigned int acpi_cpei_override;
+unsigned int acpi_cpei_phys_cpuid;
+
+unsigned long acpi_wakeup_address = 0;
+
+#ifdef CONFIG_IA64_GENERIC
+static unsigned long __init acpi_find_rsdp(void)
+{
+ unsigned long rsdp_phys = 0;
+
+ if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+ rsdp_phys = efi.acpi20;
+ else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+ printk(KERN_WARNING PREFIX
+ "v1.0/r0.71 tables no longer supported\n");
+ return rsdp_phys;
+}
+
+const char __init *
+acpi_get_sysname(void)
+{
+ unsigned long rsdp_phys;
+ struct acpi_table_rsdp *rsdp;
+ struct acpi_table_xsdt *xsdt;
+ struct acpi_table_header *hdr;
+#ifdef CONFIG_INTEL_IOMMU
+ u64 i, nentries;
+#endif
+
+ rsdp_phys = acpi_find_rsdp();
+ if (!rsdp_phys) {
+ printk(KERN_ERR
+ "ACPI 2.0 RSDP not found, default to \"dig\"\n");
+ return "dig";
+ }
+
+ rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys);
+ if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
+ printk(KERN_ERR
+ "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
+ hdr = &xsdt->header;
+ if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) {
+ printk(KERN_ERR
+ "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ if (!strcmp(hdr->oem_id, "HP")) {
+ return "hpzx1";
+ } else if (!strcmp(hdr->oem_id, "SGI")) {
+ if (!strcmp(hdr->oem_table_id + 4, "UV"))
+ return "uv";
+ else
+ return "sn2";
+ }
+
+#ifdef CONFIG_INTEL_IOMMU
+ /* Look for Intel IOMMU */
+ nentries = (hdr->length - sizeof(*hdr)) /
+ sizeof(xsdt->table_offset_entry[0]);
+ for (i = 0; i < nentries; i++) {
+ hdr = __va(xsdt->table_offset_entry[i]);
+ if (strncmp(hdr->signature, ACPI_SIG_DMAR,
+ sizeof(ACPI_SIG_DMAR) - 1) = 0)
+ return "dig_vtd";
+ }
+#endif
+
+ return "dig";
+}
+#endif /* CONFIG_IA64_GENERIC */
+
+#define ACPI_MAX_PLATFORM_INTERRUPTS 256
+
+/* Array to record platform interrupt vectors for generic interrupt routing. */
+int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
+ [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
+};
+
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
+
+/*
+ * Interrupt routing API for device drivers. Provides interrupt vector for
+ * a generic platform event. Currently only CPEI is implemented.
+ */
+int acpi_request_vector(u32 int_type)
+{
+ int vector = -1;
+
+ if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
+ /* corrected platform error interrupt */
+ vector = platform_intr_list[int_type];
+ } else
+ printk(KERN_ERR
+ "acpi_request_vector(): invalid interrupt type\n");
+ return vector;
+}
+
+char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
+{
+ return __va(phys_addr);
+}
+
+void __init __acpi_unmap_table(char *map, unsigned long size)
+{
+}
+
+/* --------------------------------------------------------------------------
+ Boot-time Table Parsing
+ -------------------------------------------------------------------------- */
+
+static int available_cpus __initdata;
+struct acpi_table_madt *acpi_madt __initdata;
+static u8 has_8259;
+
+static int __init
+acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_local_apic_override *lapic;
+
+ lapic = (struct acpi_madt_local_apic_override *)header;
+
+ if (BAD_MADT_ENTRY(lapic, end))
+ return -EINVAL;
+
+ if (lapic->address) {
+ iounmap(ipi_base_addr);
+ ipi_base_addr = ioremap(lapic->address, 0);
+ }
+ return 0;
+}
+
+static int __init
+acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_local_sapic *lsapic;
+
+ lsapic = (struct acpi_madt_local_sapic *)header;
+
+ /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */
+
+ if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
+#ifdef CONFIG_SMP
+ smp_boot_data.cpu_phys_id[available_cpus] + (lsapic->id << 8) | lsapic->eid;
+#endif
+ ++available_cpus;
+ }
+
+ total_cpus++;
+ return 0;
+}
+
+static int __init
+acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_local_apic_nmi *lacpi_nmi;
+
+ lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header;
+
+ if (BAD_MADT_ENTRY(lacpi_nmi, end))
+ return -EINVAL;
+
+ /* TBD: Support lapic_nmi entries */
+ return 0;
+}
+
+static int __init
+acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_io_sapic *iosapic;
+
+ iosapic = (struct acpi_madt_io_sapic *)header;
+
+ if (BAD_MADT_ENTRY(iosapic, end))
+ return -EINVAL;
+
+ return iosapic_init(iosapic->address, iosapic->global_irq_base);
+}
+
+static unsigned int __initdata acpi_madt_rev;
+
+static int __init
+acpi_parse_plat_int_src(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_interrupt_source *plintsrc;
+ int vector;
+
+ plintsrc = (struct acpi_madt_interrupt_source *)header;
+
+ if (BAD_MADT_ENTRY(plintsrc, end))
+ return -EINVAL;
+
+ /*
+ * Get vector assignment for this interrupt, set attributes,
+ * and program the IOSAPIC routing table.
+ */
+ vector = iosapic_register_platform_intr(plintsrc->type,
+ plintsrc->global_irq,
+ plintsrc->io_sapic_vector,
+ plintsrc->eid,
+ plintsrc->id,
+ ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) =
+ ACPI_MADT_POLARITY_ACTIVE_HIGH) ?
+ IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+ ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) =
+ ACPI_MADT_TRIGGER_EDGE) ?
+ IOSAPIC_EDGE : IOSAPIC_LEVEL);
+
+ platform_intr_list[plintsrc->type] = vector;
+ if (acpi_madt_rev > 1) {
+ acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;
+ }
+
+ /*
+ * Save the physical id, so we can check when its being removed
+ */
+ acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
+
+ return 0;
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+unsigned int can_cpei_retarget(void)
+{
+ extern int cpe_vector;
+ extern unsigned int force_cpei_retarget;
+
+ /*
+ * Only if CPEI is supported and the override flag
+ * is present, otherwise return that its re-targettable
+ * if we are in polling mode.
+ */
+ if (cpe_vector > 0) {
+ if (acpi_cpei_override || force_cpei_retarget)
+ return 1;
+ else
+ return 0;
+ }
+ return 1;
+}
+
+unsigned int is_cpu_cpei_target(unsigned int cpu)
+{
+ unsigned int logical_id;
+
+ logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
+
+ if (logical_id = cpu)
+ return 1;
+ else
+ return 0;
+}
+
+void set_cpei_target_cpu(unsigned int cpu)
+{
+ acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
+}
+#endif
+
+unsigned int get_cpei_target_cpu(void)
+{
+ return acpi_cpei_phys_cpuid;
+}
+
+static int __init
+acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_interrupt_override *p;
+
+ p = (struct acpi_madt_interrupt_override *)header;
+
+ if (BAD_MADT_ENTRY(p, end))
+ return -EINVAL;
+
+ iosapic_override_isa_irq(p->source_irq, p->global_irq,
+ ((p->inti_flags & ACPI_MADT_POLARITY_MASK) =
+ ACPI_MADT_POLARITY_ACTIVE_LOW) ?
+ IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH,
+ ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) =
+ ACPI_MADT_TRIGGER_LEVEL) ?
+ IOSAPIC_LEVEL : IOSAPIC_EDGE);
+ return 0;
+}
+
+static int __init
+acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_nmi_source *nmi_src;
+
+ nmi_src = (struct acpi_madt_nmi_source *)header;
+
+ if (BAD_MADT_ENTRY(nmi_src, end))
+ return -EINVAL;
+
+ /* TBD: Support nimsrc entries */
+ return 0;
+}
+
+static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+ if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) {
+
+ /*
+ * Unfortunately ITC_DRIFT is not yet part of the
+ * official SAL spec, so the ITC_DRIFT bit is not
+ * set by the BIOS on this hardware.
+ */
+ sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
+
+ cyclone_setup();
+ }
+}
+
+static int __init acpi_parse_madt(struct acpi_table_header *table)
+{
+ if (!table)
+ return -EINVAL;
+
+ acpi_madt = (struct acpi_table_madt *)table;
+
+ acpi_madt_rev = acpi_madt->header.revision;
+
+ /* remember the value for reference after free_initmem() */
+#ifdef CONFIG_ITANIUM
+ has_8259 = 1; /* Firmware on old Itanium systems is broken */
+#else
+ has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT;
+#endif
+ iosapic_system_init(has_8259);
+
+ /* Get base address of IPI Message Block */
+
+ if (acpi_madt->address)
+ ipi_base_addr = ioremap(acpi_madt->address, 0);
+
+ printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
+
+ acpi_madt_oem_check(acpi_madt->header.oem_id,
+ acpi_madt->header.oem_table_id);
+
+ return 0;
+}
+
+#ifdef CONFIG_ACPI_NUMA
+
+#undef SLIT_DEBUG
+
+#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
+
+static int __initdata srat_num_cpus; /* number of cpus */
+static u32 pxm_flag[PXM_FLAG_LEN];
+#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
+#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
+static struct acpi_table_slit __initdata *slit_table;
+cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
+
+static int __init
+get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm;
+
+ pxm = pa->proximity_domain_lo;
+ if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
+ pxm += pa->proximity_domain_hi[0] << 8;
+ return pxm;
+}
+
+static int __init
+get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
+{
+ int pxm;
+
+ pxm = ma->proximity_domain;
+ if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
+ pxm &= 0xff;
+
+ return pxm;
+}
+
+/*
+ * ACPI 2.0 SLIT (System Locality Information Table)
+ * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
+ */
+void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
+{
+ u32 len;
+
+ len = sizeof(struct acpi_table_header) + 8
+ + slit->locality_count * slit->locality_count;
+ if (slit->header.length != len) {
+ printk(KERN_ERR
+ "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
+ len, slit->header.length);
+ return;
+ }
+ slit_table = slit;
+}
+
+void __init
+acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm;
+
+ if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
+ return;
+
+ if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
+ printk_once(KERN_WARNING
+ "node_cpuid[%ld] is too small, may not be able to use all cpus\n",
+ ARRAY_SIZE(node_cpuid));
+ return;
+ }
+ pxm = get_processor_proximity_domain(pa);
+
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pxm);
+
+ node_cpuid[srat_num_cpus].phys_id + (pa->apic_id << 8) | (pa->local_sapic_eid);
+ /* nid should be overridden as logical node id later */
+ node_cpuid[srat_num_cpus].nid = pxm;
+ cpu_set(srat_num_cpus, early_cpu_possible_map);
+ srat_num_cpus++;
+}
+
+int __init
+acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
+{
+ unsigned long paddr, size;
+ int pxm;
+ struct node_memblk_s *p, *q, *pend;
+
+ pxm = get_memory_proximity_domain(ma);
+
+ /* fill node memory chunk structure */
+ paddr = ma->base_address;
+ size = ma->length;
+
+ /* Ignore disabled entries */
+ if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
+ return -1;
+
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pxm);
+
+ /* Insertion sort based on base address */
+ pend = &node_memblk[num_node_memblks];
+ for (p = &node_memblk[0]; p < pend; p++) {
+ if (paddr < p->start_paddr)
+ break;
+ }
+ if (p < pend) {
+ for (q = pend - 1; q >= p; q--)
+ *(q + 1) = *q;
+ }
+ p->start_paddr = paddr;
+ p->size = size;
+ p->nid = pxm;
+ num_node_memblks++;
+ return 0;
+}
+
+void __init acpi_numa_arch_fixup(void)
+{
+ int i, j, node_from, node_to;
+
+ /* If there's no SRAT, fix the phys_id and mark node 0 online */
+ if (srat_num_cpus = 0) {
+ node_set_online(0);
+ node_cpuid[0].phys_id = hard_smp_processor_id();
+ return;
+ }
+
+ /*
+ * MCD - This can probably be dropped now. No need for pxm ID to node ID
+ * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
+ */
+ nodes_clear(node_online_map);
+ for (i = 0; i < MAX_PXM_DOMAINS; i++) {
+ if (pxm_bit_test(i)) {
+ int nid = acpi_map_pxm_to_node(i);
+ node_set_online(nid);
+ }
+ }
+
+ /* set logical node id in memory chunk structure */
+ for (i = 0; i < num_node_memblks; i++)
+ node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
+
+ /* assign memory bank numbers for each chunk on each node */
+ for_each_online_node(i) {
+ int bank;
+
+ bank = 0;
+ for (j = 0; j < num_node_memblks; j++)
+ if (node_memblk[j].nid = i)
+ node_memblk[j].bank = bank++;
+ }
+
+ /* set logical node id in cpu structure */
+ for_each_possible_early_cpu(i)
+ node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
+
+ printk(KERN_INFO "Number of logical nodes in system = %d\n",
+ num_online_nodes());
+ printk(KERN_INFO "Number of memory chunks in system = %d\n",
+ num_node_memblks);
+
+ if (!slit_table) {
+ for (i = 0; i < MAX_NUMNODES; i++)
+ for (j = 0; j < MAX_NUMNODES; j++)
+ node_distance(i, j) = i = j ? LOCAL_DISTANCE :
+ REMOTE_DISTANCE;
+ return;
+ }
+
+ memset(numa_slit, -1, sizeof(numa_slit));
+ for (i = 0; i < slit_table->locality_count; i++) {
+ if (!pxm_bit_test(i))
+ continue;
+ node_from = pxm_to_node(i);
+ for (j = 0; j < slit_table->locality_count; j++) {
+ if (!pxm_bit_test(j))
+ continue;
+ node_to = pxm_to_node(j);
+ node_distance(node_from, node_to) + slit_table->entry[i * slit_table->locality_count + j];
+ }
+ }
+
+#ifdef SLIT_DEBUG
+ printk("ACPI 2.0 SLIT locality table:\n");
+ for_each_online_node(i) {
+ for_each_online_node(j)
+ printk("%03d ", node_distance(i, j));
+ printk("\n");
+ }
+#endif
+}
+#endif /* CONFIG_ACPI_NUMA */
+
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
+{
+ if (acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM)
+ return gsi;
+
+ if (has_8259 && gsi < 16)
+ return isa_irq_to_vector(gsi);
+
+ return iosapic_register_intr(gsi,
+ (polarity =
+ ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
+ IOSAPIC_POL_LOW,
+ (triggering =
+ ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
+ IOSAPIC_LEVEL);
+}
+EXPORT_SYMBOL_GPL(acpi_register_gsi);
+
+void acpi_unregister_gsi(u32 gsi)
+{
+ if (acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM)
+ return;
+
+ if (has_8259 && gsi < 16)
+ return;
+
+ iosapic_unregister_intr(gsi);
+}
+EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+static int __init acpi_parse_fadt(struct acpi_table_header *table)
+{
+ struct acpi_table_header *fadt_header;
+ struct acpi_table_fadt *fadt;
+
+ if (!table)
+ return -EINVAL;
+
+ fadt_header = (struct acpi_table_header *)table;
+ if (fadt_header->revision != 3)
+ return -ENODEV; /* Only deal with ACPI 2.0 FADT */
+
+ fadt = (struct acpi_table_fadt *)fadt_header;
+
+ acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
+ ACPI_ACTIVE_LOW);
+ return 0;
+}
+
+int __init early_acpi_boot_init(void)
+{
+ int ret;
+
+ /*
+ * do a partial walk of MADT to determine how many CPUs
+ * we have including offline CPUs
+ */
+ if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ return 0;
+ }
+
+ ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
+ acpi_parse_lsapic, NR_CPUS);
+ if (ret < 1)
+ printk(KERN_ERR PREFIX
+ "Error parsing MADT - no LAPIC entries\n");
+ else
+ acpi_lapic = 1;
+
+#ifdef CONFIG_SMP
+ if (available_cpus = 0) {
+ printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
+ printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
+ smp_boot_data.cpu_phys_id[available_cpus] + hard_smp_processor_id();
+ available_cpus = 1; /* We've got at least one of these, no? */
+ }
+ smp_boot_data.cpu_count = available_cpus;
+#endif
+ /* Make boot-up look pretty */
+ printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
+ total_cpus);
+
+ return 0;
+}
+
+int __init acpi_boot_init(void)
+{
+
+ /*
+ * MADT
+ * ----
+ * Parse the Multiple APIC Description Table (MADT), if exists.
+ * Note that this table provides platform SMP configuration
+ * information -- the successor to MPS tables.
+ */
+
+ if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ goto skip_madt;
+ }
+
+ /* Local APIC */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing LAPIC address override entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0)
+ < 0)
+ printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
+
+ /* I/O APIC */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) {
+ if (!ia64_platform_is("sn2"))
+ printk(KERN_ERR PREFIX
+ "Error parsing MADT - no IOSAPIC entries\n");
+ }
+
+ /* System-Level Interrupt Routing */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src,
+ ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing platform interrupt source entry\n");
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0)
+ printk(KERN_ERR PREFIX
+ "Error parsing interrupt source overrides entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0)
+ printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
+ skip_madt:
+
+ /*
+ * FADT says whether a legacy keyboard controller is present.
+ * The FADT also contains an SCI_INT line, by which the system
+ * gets interrupts such as power and sleep buttons. If it's not
+ * on a Legacy interrupt, it needs to be setup.
+ */
+ if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
+ printk(KERN_ERR PREFIX "Can't find FADT\n");
+
+#ifdef CONFIG_ACPI_NUMA
+#ifdef CONFIG_SMP
+ if (srat_num_cpus = 0) {
+ int cpu, i = 1;
+ for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
+ if (smp_boot_data.cpu_phys_id[cpu] !+ hard_smp_processor_id())
+ node_cpuid[i++].phys_id + smp_boot_data.cpu_phys_id[cpu];
+ }
+#endif
+ build_cpu_to_node_map();
+#endif
+ return 0;
+}
+
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
+{
+ int tmp;
+
+ if (has_8259 && gsi < 16)
+ *irq = isa_irq_to_vector(gsi);
+ else {
+ tmp = gsi_to_irq(gsi);
+ if (tmp = -1)
+ return -1;
+ *irq = tmp;
+ }
+ return 0;
+}
+
+int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
+{
+ if (isa_irq >= 16)
+ return -1;
+ *gsi = isa_irq;
+ return 0;
+}
+
+/*
+ * ACPI based hotplug CPU support
+ */
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
+{
+#ifdef CONFIG_ACPI_NUMA
+ /*
+ * We don't have cpu-only-node hotadd. But if the system equips
+ * SRAT table, pxm is already found and node is ready.
+ * So, just pxm_to_nid(pxm) is OK.
+ * This code here is for the system which doesn't have full SRAT
+ * table for possible cpus.
+ */
+ node_cpuid[cpu].phys_id = physid;
+ node_cpuid[cpu].nid = acpi_get_node(handle);
+#endif
+ return 0;
+}
+
+int additional_cpus __initdata = -1;
+
+static __init int setup_additional_cpus(char *s)
+{
+ if (s)
+ additional_cpus = simple_strtol(s, NULL, 0);
+
+ return 0;
+}
+
+early_param("additional_cpus", setup_additional_cpus);
+
+/*
+ * cpu_possible_mask should be static, it cannot change as CPUs
+ * are onlined, or offlined. The reason is per-cpu data-structures
+ * are allocated by some modules at init time, and dont expect to
+ * do this dynamically on cpu arrival/departure.
+ * cpu_present_mask on the other hand can change dynamically.
+ * In case when cpu_hotplug is not compiled, then we resort to current
+ * behaviour, which is cpu_possible = cpu_present.
+ * - Ashok Raj
+ *
+ * Three ways to find out the number of additional hotplug CPUs:
+ * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
+ * - The user can overwrite it with additional_cpus=NUM
+ * - Otherwise don't reserve additional CPUs.
+ */
+__init void prefill_possible_map(void)
+{
+ int i;
+ int possible, disabled_cpus;
+
+ disabled_cpus = total_cpus - available_cpus;
+
+ if (additional_cpus = -1) {
+ if (disabled_cpus > 0)
+ additional_cpus = disabled_cpus;
+ else
+ additional_cpus = 0;
+ }
+
+ possible = available_cpus + additional_cpus;
+
+ if (possible > nr_cpu_ids)
+ possible = nr_cpu_ids;
+
+ printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
+ possible, max((possible - available_cpus), 0));
+
+ for (i = 0; i < possible; i++)
+ set_cpu_possible(i, true);
+}
+
+static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
+{
+ cpumask_t tmp_map;
+ int cpu;
+
+ cpumask_complement(&tmp_map, cpu_present_mask);
+ cpu = cpumask_first(&tmp_map);
+ if (cpu >= nr_cpu_ids)
+ return -EINVAL;
+
+ acpi_map_cpu2node(handle, cpu, physid);
+
+ set_cpu_present(cpu, true);
+ ia64_cpu_to_sapicid[cpu] = physid;
+
+ acpi_processor_set_pdc(handle);
+
+ *pcpu = cpu;
+ return (0);
+}
+
+/* wrapper to silence section mismatch warning */
+int __ref acpi_map_cpu(acpi_handle handle, int physid, int *pcpu)
+{
+ return _acpi_map_lsapic(handle, physid, pcpu);
+}
+EXPORT_SYMBOL(acpi_map_cpu);
+
+int acpi_unmap_cpu(int cpu)
+{
+ ia64_cpu_to_sapicid[cpu] = -1;
+ set_cpu_present(cpu, false);
+
+#ifdef CONFIG_ACPI_NUMA
+ /* NUMA specific cleanup's */
+#endif
+
+ return (0);
+}
+EXPORT_SYMBOL(acpi_unmap_cpu);
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+#ifdef CONFIG_ACPI_NUMA
+static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth,
+ void *context, void **ret)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ struct acpi_madt_io_sapic *iosapic;
+ unsigned int gsi_base;
+ int node;
+
+ /* Only care about objects w/ a method that returns the MADT */
+ if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
+ return AE_OK;
+
+ if (!buffer.length || !buffer.pointer)
+ return AE_OK;
+
+ obj = buffer.pointer;
+ if (obj->type != ACPI_TYPE_BUFFER ||
+ obj->buffer.length < sizeof(*iosapic)) {
+ kfree(buffer.pointer);
+ return AE_OK;
+ }
+
+ iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
+
+ if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
+ kfree(buffer.pointer);
+ return AE_OK;
+ }
+
+ gsi_base = iosapic->global_irq_base;
+
+ kfree(buffer.pointer);
+
+ /* OK, it's an IOSAPIC MADT entry; associate it with a node */
+ node = acpi_get_node(handle);
+ if (node = NUMA_NO_NODE || !node_online(node) ||
+ cpumask_empty(cpumask_of_node(node)))
+ return AE_OK;
+
+ /* We know a gsi to node mapping! */
+ map_iosapic_to_node(gsi_base, node);
+ return AE_OK;
+}
+
+static int __init
+acpi_map_iosapics (void)
+{
+ acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
+ return 0;
+}
+
+fs_initcall(acpi_map_iosapics);
+#endif /* CONFIG_ACPI_NUMA */
+
+int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+ int err;
+
+ if ((err = iosapic_init(phys_addr, gsi_base)))
+ return err;
+
+#ifdef CONFIG_ACPI_NUMA
+ acpi_map_iosapic(handle, 0, NULL, NULL);
+#endif /* CONFIG_ACPI_NUMA */
+
+ return 0;
+}
+
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
+{
+ return iosapic_remove(gsi_base);
+}
+
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
+/*
+ * acpi_suspend_lowlevel() - save kernel state and suspend.
+ *
+ * TBD when when IA64 starts to support suspend...
+ */
+int acpi_suspend_lowlevel(void) { return 0; }
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 2/7] arm64: ACPI: move kernel acpi files to a directory
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 0:44 ` al.stone at linaro.org
-1 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In preparation for adding some additional arch-dependent ACPI files,
move the existing ones to a directory to try to keep clutter down in
the arch/arm64/kernel directory.
There is no functional change. This patch only moves source files.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/arm64/kernel/Makefile | 2 +-
arch/arm64/kernel/acpi.c | 359 ----------------------------------------
arch/arm64/kernel/acpi/Makefile | 1 +
arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 361 insertions(+), 360 deletions(-)
delete mode 100644 arch/arm64/kernel/acpi.c
create mode 100644 arch/arm64/kernel/acpi/Makefile
create mode 100644 arch/arm64/kernel/acpi/acpi.c
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 8bdc6bd..d7d622f 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -34,7 +34,7 @@ arm64-obj-$(CONFIG_KGDB) += kgdb.o
arm64-obj-$(CONFIG_EFI) += efi.o efi-stub.o efi-entry.o
arm64-obj-$(CONFIG_PCI) += pci.o
arm64-obj-$(CONFIG_ARMV8_DEPRECATED) += armv8_deprecated.o
-arm64-obj-$(CONFIG_ACPI) += acpi.o
+arm64-obj-$(CONFIG_ACPI) += acpi/
obj-y += $(arm64-obj-y) vdso/
obj-m += $(arm64-obj-m)
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
deleted file mode 100644
index ea3c9fc..0000000
--- a/arch/arm64/kernel/acpi.c
+++ /dev/null
@@ -1,359 +0,0 @@
-/*
- * ARM64 Specific Low-Level ACPI Boot Support
- *
- * Copyright (C) 2013-2014, Linaro Ltd.
- * Author: Al Stone <al.stone@linaro.org>
- * Author: Graeme Gregory <graeme.gregory@linaro.org>
- * Author: Hanjun Guo <hanjun.guo@linaro.org>
- * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
- * Author: Naresh Bhat <naresh.bhat@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt) "ACPI: " fmt
-
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/cpumask.h>
-#include <linux/memblock.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/bootmem.h>
-#include <linux/smp.h>
-#include <linux/irqchip/arm-gic-acpi.h>
-
-#include <asm/cputype.h>
-#include <asm/cpu_ops.h>
-
-int acpi_noirq; /* skip ACPI IRQ initialization */
-int acpi_disabled;
-EXPORT_SYMBOL(acpi_disabled);
-
-int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
-EXPORT_SYMBOL(acpi_pci_disabled);
-
-static int enabled_cpus; /* Processors (GICC) with enabled flag in MADT */
-
-/*
- * Since we're on ARM, the default interrupt routing model
- * clearly has to be GIC.
- */
-enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC;
-
-/*
- * __acpi_map_table() will be called before page_init(), so early_ioremap()
- * or early_memremap() should be called here to for ACPI table mapping.
- */
-char *__init __acpi_map_table(unsigned long phys, unsigned long size)
-{
- if (!phys || !size)
- return NULL;
-
- return early_memremap(phys, size);
-}
-
-void __init __acpi_unmap_table(char *map, unsigned long size)
-{
- if (!map || !size)
- return;
-
- early_memunmap(map, size);
-}
-
-/**
- * acpi_map_gic_cpu_interface - generates a logical cpu number
- * and map to MPIDR represented by GICC structure
- * @mpidr: CPU's hardware id to register, MPIDR represented in MADT
- * @enabled: this cpu is enabled or not
- *
- * Returns the logical cpu number which maps to MPIDR
- */
-static int acpi_map_gic_cpu_interface(u64 mpidr, u8 enabled)
-{
- int cpu;
-
- if (mpidr == INVALID_HWID) {
- pr_info("Skip MADT cpu entry with invalid MPIDR\n");
- return -EINVAL;
- }
-
- total_cpus++;
- if (!enabled)
- return -EINVAL;
-
- if (enabled_cpus >= NR_CPUS) {
- pr_warn("NR_CPUS limit of %d reached, Processor %d/0x%llx ignored.\n",
- NR_CPUS, total_cpus, mpidr);
- return -EINVAL;
- }
-
- /* No need to check duplicate MPIDRs for the first CPU */
- if (enabled_cpus) {
- /*
- * Duplicate MPIDRs are a recipe for disaster. Scan
- * all initialized entries and check for
- * duplicates. If any is found just ignore the CPU.
- */
- for_each_possible_cpu(cpu) {
- if (cpu_logical_map(cpu) == mpidr) {
- pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n",
- mpidr);
- return -EINVAL;
- }
- }
-
- /* allocate a logical cpu id for the new comer */
- cpu = cpumask_next_zero(-1, cpu_possible_mask);
- } else {
- /*
- * First GICC entry must be BSP as ACPI spec said
- * in section 5.2.12.15
- */
- if (cpu_logical_map(0) != mpidr) {
- pr_err("First GICC entry with MPIDR 0x%llx is not BSP\n",
- mpidr);
- return -EINVAL;
- }
-
- /*
- * boot_cpu_init() already hold bit 0 in cpu_present_mask
- * for BSP, no need to allocate again.
- */
- cpu = 0;
- }
-
- /* CPU 0 was already initialized */
- if (cpu) {
- cpu_ops[cpu] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
- if (!cpu_ops[cpu])
- return -EINVAL;
-
- if (cpu_ops[cpu]->cpu_init(NULL, cpu))
- return -EOPNOTSUPP;
-
- /* map the logical cpu id to cpu MPIDR */
- cpu_logical_map(cpu) = mpidr;
-
- set_cpu_possible(cpu, true);
- } else {
- /* get cpu0's ops, no need to return if ops is null */
- cpu_ops[0] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
- }
-
- enabled_cpus++;
- return cpu;
-}
-
-static int __init
-acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
- const unsigned long end)
-{
- struct acpi_madt_generic_interrupt *processor;
-
- processor = (struct acpi_madt_generic_interrupt *)header;
-
- if (BAD_MADT_ENTRY(processor, end))
- return -EINVAL;
-
- acpi_table_print_madt_entry(header);
-
- acpi_map_gic_cpu_interface(processor->arm_mpidr & MPIDR_HWID_BITMASK,
- processor->flags & ACPI_MADT_ENABLED);
-
- return 0;
-}
-
-/* Parse GIC cpu interface entries in MADT for SMP init */
-void __init acpi_smp_init_cpus(void)
-{
- int count;
-
- /*
- * do a partial walk of MADT to determine how many CPUs
- * we have including disabled CPUs, and get information
- * we need for SMP init
- */
- count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
- acpi_parse_gic_cpu_interface, 0);
-
- if (!count) {
- pr_err("No GIC CPU interface entries present\n");
- return;
- } else if (count < 0) {
- pr_err("Error parsing GIC CPU interface entry\n");
- return;
- }
-
- /* Make boot-up look pretty */
- pr_info("%d CPUs enabled, %d CPUs total\n", enabled_cpus, total_cpus);
-}
-
-int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
-{
- *irq = irq_find_mapping(NULL, gsi);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
-
-/*
- * success: return IRQ number (>0)
- * failure: return =< 0
- */
-int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
-{
- unsigned int irq;
- unsigned int irq_type;
-
- /*
- * ACPI have no bindings to indicate SPI or PPI, so we
- * use different mappings from DT in ACPI.
- *
- * For FDT
- * PPI interrupt: in the range [0, 15];
- * SPI interrupt: in the range [0, 987];
- *
- * For ACPI, GSI should be unique so using
- * the hwirq directly for the mapping:
- * PPI interrupt: in the range [16, 31];
- * SPI interrupt: in the range [32, 1019];
- */
-
- if (trigger == ACPI_EDGE_SENSITIVE &&
- polarity == ACPI_ACTIVE_LOW)
- irq_type = IRQ_TYPE_EDGE_FALLING;
- else if (trigger == ACPI_EDGE_SENSITIVE &&
- polarity == ACPI_ACTIVE_HIGH)
- irq_type = IRQ_TYPE_EDGE_RISING;
- else if (trigger == ACPI_LEVEL_SENSITIVE &&
- polarity == ACPI_ACTIVE_LOW)
- irq_type = IRQ_TYPE_LEVEL_LOW;
- else if (trigger == ACPI_LEVEL_SENSITIVE &&
- polarity == ACPI_ACTIVE_HIGH)
- irq_type = IRQ_TYPE_LEVEL_HIGH;
- else
- irq_type = IRQ_TYPE_NONE;
-
- /*
- * Since only one GIC is supported in ACPI 5.0, we can
- * create mapping refer to the default domain
- */
- irq = irq_create_mapping(NULL, gsi);
- if (!irq)
- return irq;
-
- /* Set irq type if specified and different than the current one */
- if (irq_type != IRQ_TYPE_NONE &&
- irq_type != irq_get_trigger_type(irq))
- irq_set_irq_type(irq, irq_type);
- return irq;
-}
-EXPORT_SYMBOL_GPL(acpi_register_gsi);
-
-void acpi_unregister_gsi(u32 gsi)
-{
-}
-EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
-
-static int __init acpi_parse_fadt(struct acpi_table_header *table)
-{
- struct acpi_table_fadt *fadt = (struct acpi_table_fadt *)table;
-
- /*
- * Revision in table header is the FADT Major revision,
- * and there is a minor revision of FADT which was introduced
- * by ACPI 5.1, we only deal with ACPI 5.1 or newer revision
- * to get arm boot flags, or we will disable ACPI.
- */
- if (table->revision > 5 ||
- (table->revision == 5 && fadt->minor_revision >= 1)) {
- /*
- * ACPI 5.1 only has two explicit methods to boot up SMP,
- * PSCI and Parking protocol, but the Parking protocol is
- * only specified for ARMv7 now, so make PSCI as the only
- * way for the SMP boot protocol before some updates for
- * the ACPI spec or the Parking protocol spec.
- */
- if (acpi_psci_present())
- return 0;
-
- pr_warn("No PSCI support, will not bring up secondary CPUs\n");
- return -EOPNOTSUPP;
- }
-
- pr_warn("Unsupported FADT revision %d.%d, should be 5.1+, will disable ACPI\n",
- table->revision, fadt->minor_revision);
- disable_acpi();
-
- return -EINVAL;
-}
-
-/*
- * acpi_boot_table_init() called from setup_arch(), always.
- * 1. find RSDP and get its address, and then find XSDT
- * 2. extract all tables and checksums them all
- * 3. check ACPI FADT revision
- *
- * We can parse ACPI boot-time tables such as MADT after
- * this function is called.
- */
-void __init acpi_boot_table_init(void)
-{
- /* If acpi_disabled, bail out */
- if (acpi_disabled)
- return;
-
- /* Initialize the ACPI boot-time table parser. */
- if (acpi_table_init()) {
- disable_acpi();
- return;
- }
-
- if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
- pr_err("Can't find FADT or error happened during parsing FADT\n");
-}
-
-void __init acpi_gic_init(void)
-{
- struct acpi_table_header *table;
- acpi_status status;
- acpi_size tbl_size;
- int err;
-
- if (acpi_disabled)
- return;
-
- status = acpi_get_table_with_size(ACPI_SIG_MADT, 0, &table, &tbl_size);
- if (ACPI_FAILURE(status)) {
- const char *msg = acpi_format_exception(status);
-
- pr_err("Failed to get MADT table, %s\n", msg);
- return;
- }
-
- err = gic_v2_acpi_init(table);
- if (err)
- pr_err("Failed to initialize GIC IRQ controller");
-
- early_acpi_os_unmap_memory((char *)table, tbl_size);
-}
-
-static int __init parse_acpi(char *arg)
-{
- if (!arg)
- return -EINVAL;
-
- /* "acpi=off" disables both ACPI table parsing and interpreter */
- if (strcmp(arg, "off") == 0)
- disable_acpi();
- else if (strcmp(arg, "force") == 0) /* force ACPI to be enabled */
- enable_acpi();
- else
- return -EINVAL; /* Core will print when we return error */
-
- return 0;
-}
-early_param("acpi", parse_acpi);
diff --git a/arch/arm64/kernel/acpi/Makefile b/arch/arm64/kernel/acpi/Makefile
new file mode 100644
index 0000000..e049f94
--- /dev/null
+++ b/arch/arm64/kernel/acpi/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ACPI) += acpi.o
diff --git a/arch/arm64/kernel/acpi/acpi.c b/arch/arm64/kernel/acpi/acpi.c
new file mode 100644
index 0000000..ea3c9fc
--- /dev/null
+++ b/arch/arm64/kernel/acpi/acpi.c
@@ -0,0 +1,359 @@
+/*
+ * ARM64 Specific Low-Level ACPI Boot Support
+ *
+ * Copyright (C) 2013-2014, Linaro Ltd.
+ * Author: Al Stone <al.stone@linaro.org>
+ * Author: Graeme Gregory <graeme.gregory@linaro.org>
+ * Author: Hanjun Guo <hanjun.guo@linaro.org>
+ * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
+ * Author: Naresh Bhat <naresh.bhat@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) "ACPI: " fmt
+
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/cpumask.h>
+#include <linux/memblock.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/bootmem.h>
+#include <linux/smp.h>
+#include <linux/irqchip/arm-gic-acpi.h>
+
+#include <asm/cputype.h>
+#include <asm/cpu_ops.h>
+
+int acpi_noirq; /* skip ACPI IRQ initialization */
+int acpi_disabled;
+EXPORT_SYMBOL(acpi_disabled);
+
+int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
+EXPORT_SYMBOL(acpi_pci_disabled);
+
+static int enabled_cpus; /* Processors (GICC) with enabled flag in MADT */
+
+/*
+ * Since we're on ARM, the default interrupt routing model
+ * clearly has to be GIC.
+ */
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC;
+
+/*
+ * __acpi_map_table() will be called before page_init(), so early_ioremap()
+ * or early_memremap() should be called here to for ACPI table mapping.
+ */
+char *__init __acpi_map_table(unsigned long phys, unsigned long size)
+{
+ if (!phys || !size)
+ return NULL;
+
+ return early_memremap(phys, size);
+}
+
+void __init __acpi_unmap_table(char *map, unsigned long size)
+{
+ if (!map || !size)
+ return;
+
+ early_memunmap(map, size);
+}
+
+/**
+ * acpi_map_gic_cpu_interface - generates a logical cpu number
+ * and map to MPIDR represented by GICC structure
+ * @mpidr: CPU's hardware id to register, MPIDR represented in MADT
+ * @enabled: this cpu is enabled or not
+ *
+ * Returns the logical cpu number which maps to MPIDR
+ */
+static int acpi_map_gic_cpu_interface(u64 mpidr, u8 enabled)
+{
+ int cpu;
+
+ if (mpidr == INVALID_HWID) {
+ pr_info("Skip MADT cpu entry with invalid MPIDR\n");
+ return -EINVAL;
+ }
+
+ total_cpus++;
+ if (!enabled)
+ return -EINVAL;
+
+ if (enabled_cpus >= NR_CPUS) {
+ pr_warn("NR_CPUS limit of %d reached, Processor %d/0x%llx ignored.\n",
+ NR_CPUS, total_cpus, mpidr);
+ return -EINVAL;
+ }
+
+ /* No need to check duplicate MPIDRs for the first CPU */
+ if (enabled_cpus) {
+ /*
+ * Duplicate MPIDRs are a recipe for disaster. Scan
+ * all initialized entries and check for
+ * duplicates. If any is found just ignore the CPU.
+ */
+ for_each_possible_cpu(cpu) {
+ if (cpu_logical_map(cpu) == mpidr) {
+ pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n",
+ mpidr);
+ return -EINVAL;
+ }
+ }
+
+ /* allocate a logical cpu id for the new comer */
+ cpu = cpumask_next_zero(-1, cpu_possible_mask);
+ } else {
+ /*
+ * First GICC entry must be BSP as ACPI spec said
+ * in section 5.2.12.15
+ */
+ if (cpu_logical_map(0) != mpidr) {
+ pr_err("First GICC entry with MPIDR 0x%llx is not BSP\n",
+ mpidr);
+ return -EINVAL;
+ }
+
+ /*
+ * boot_cpu_init() already hold bit 0 in cpu_present_mask
+ * for BSP, no need to allocate again.
+ */
+ cpu = 0;
+ }
+
+ /* CPU 0 was already initialized */
+ if (cpu) {
+ cpu_ops[cpu] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
+ if (!cpu_ops[cpu])
+ return -EINVAL;
+
+ if (cpu_ops[cpu]->cpu_init(NULL, cpu))
+ return -EOPNOTSUPP;
+
+ /* map the logical cpu id to cpu MPIDR */
+ cpu_logical_map(cpu) = mpidr;
+
+ set_cpu_possible(cpu, true);
+ } else {
+ /* get cpu0's ops, no need to return if ops is null */
+ cpu_ops[0] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
+ }
+
+ enabled_cpus++;
+ return cpu;
+}
+
+static int __init
+acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_madt_generic_interrupt *processor;
+
+ processor = (struct acpi_madt_generic_interrupt *)header;
+
+ if (BAD_MADT_ENTRY(processor, end))
+ return -EINVAL;
+
+ acpi_table_print_madt_entry(header);
+
+ acpi_map_gic_cpu_interface(processor->arm_mpidr & MPIDR_HWID_BITMASK,
+ processor->flags & ACPI_MADT_ENABLED);
+
+ return 0;
+}
+
+/* Parse GIC cpu interface entries in MADT for SMP init */
+void __init acpi_smp_init_cpus(void)
+{
+ int count;
+
+ /*
+ * do a partial walk of MADT to determine how many CPUs
+ * we have including disabled CPUs, and get information
+ * we need for SMP init
+ */
+ count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
+ acpi_parse_gic_cpu_interface, 0);
+
+ if (!count) {
+ pr_err("No GIC CPU interface entries present\n");
+ return;
+ } else if (count < 0) {
+ pr_err("Error parsing GIC CPU interface entry\n");
+ return;
+ }
+
+ /* Make boot-up look pretty */
+ pr_info("%d CPUs enabled, %d CPUs total\n", enabled_cpus, total_cpus);
+}
+
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
+{
+ *irq = irq_find_mapping(NULL, gsi);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
+
+/*
+ * success: return IRQ number (>0)
+ * failure: return =< 0
+ */
+int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
+{
+ unsigned int irq;
+ unsigned int irq_type;
+
+ /*
+ * ACPI have no bindings to indicate SPI or PPI, so we
+ * use different mappings from DT in ACPI.
+ *
+ * For FDT
+ * PPI interrupt: in the range [0, 15];
+ * SPI interrupt: in the range [0, 987];
+ *
+ * For ACPI, GSI should be unique so using
+ * the hwirq directly for the mapping:
+ * PPI interrupt: in the range [16, 31];
+ * SPI interrupt: in the range [32, 1019];
+ */
+
+ if (trigger == ACPI_EDGE_SENSITIVE &&
+ polarity == ACPI_ACTIVE_LOW)
+ irq_type = IRQ_TYPE_EDGE_FALLING;
+ else if (trigger == ACPI_EDGE_SENSITIVE &&
+ polarity == ACPI_ACTIVE_HIGH)
+ irq_type = IRQ_TYPE_EDGE_RISING;
+ else if (trigger == ACPI_LEVEL_SENSITIVE &&
+ polarity == ACPI_ACTIVE_LOW)
+ irq_type = IRQ_TYPE_LEVEL_LOW;
+ else if (trigger == ACPI_LEVEL_SENSITIVE &&
+ polarity == ACPI_ACTIVE_HIGH)
+ irq_type = IRQ_TYPE_LEVEL_HIGH;
+ else
+ irq_type = IRQ_TYPE_NONE;
+
+ /*
+ * Since only one GIC is supported in ACPI 5.0, we can
+ * create mapping refer to the default domain
+ */
+ irq = irq_create_mapping(NULL, gsi);
+ if (!irq)
+ return irq;
+
+ /* Set irq type if specified and different than the current one */
+ if (irq_type != IRQ_TYPE_NONE &&
+ irq_type != irq_get_trigger_type(irq))
+ irq_set_irq_type(irq, irq_type);
+ return irq;
+}
+EXPORT_SYMBOL_GPL(acpi_register_gsi);
+
+void acpi_unregister_gsi(u32 gsi)
+{
+}
+EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+static int __init acpi_parse_fadt(struct acpi_table_header *table)
+{
+ struct acpi_table_fadt *fadt = (struct acpi_table_fadt *)table;
+
+ /*
+ * Revision in table header is the FADT Major revision,
+ * and there is a minor revision of FADT which was introduced
+ * by ACPI 5.1, we only deal with ACPI 5.1 or newer revision
+ * to get arm boot flags, or we will disable ACPI.
+ */
+ if (table->revision > 5 ||
+ (table->revision == 5 && fadt->minor_revision >= 1)) {
+ /*
+ * ACPI 5.1 only has two explicit methods to boot up SMP,
+ * PSCI and Parking protocol, but the Parking protocol is
+ * only specified for ARMv7 now, so make PSCI as the only
+ * way for the SMP boot protocol before some updates for
+ * the ACPI spec or the Parking protocol spec.
+ */
+ if (acpi_psci_present())
+ return 0;
+
+ pr_warn("No PSCI support, will not bring up secondary CPUs\n");
+ return -EOPNOTSUPP;
+ }
+
+ pr_warn("Unsupported FADT revision %d.%d, should be 5.1+, will disable ACPI\n",
+ table->revision, fadt->minor_revision);
+ disable_acpi();
+
+ return -EINVAL;
+}
+
+/*
+ * acpi_boot_table_init() called from setup_arch(), always.
+ * 1. find RSDP and get its address, and then find XSDT
+ * 2. extract all tables and checksums them all
+ * 3. check ACPI FADT revision
+ *
+ * We can parse ACPI boot-time tables such as MADT after
+ * this function is called.
+ */
+void __init acpi_boot_table_init(void)
+{
+ /* If acpi_disabled, bail out */
+ if (acpi_disabled)
+ return;
+
+ /* Initialize the ACPI boot-time table parser. */
+ if (acpi_table_init()) {
+ disable_acpi();
+ return;
+ }
+
+ if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
+ pr_err("Can't find FADT or error happened during parsing FADT\n");
+}
+
+void __init acpi_gic_init(void)
+{
+ struct acpi_table_header *table;
+ acpi_status status;
+ acpi_size tbl_size;
+ int err;
+
+ if (acpi_disabled)
+ return;
+
+ status = acpi_get_table_with_size(ACPI_SIG_MADT, 0, &table, &tbl_size);
+ if (ACPI_FAILURE(status)) {
+ const char *msg = acpi_format_exception(status);
+
+ pr_err("Failed to get MADT table, %s\n", msg);
+ return;
+ }
+
+ err = gic_v2_acpi_init(table);
+ if (err)
+ pr_err("Failed to initialize GIC IRQ controller");
+
+ early_acpi_os_unmap_memory((char *)table, tbl_size);
+}
+
+static int __init parse_acpi(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+
+ /* "acpi=off" disables both ACPI table parsing and interpreter */
+ if (strcmp(arg, "off") == 0)
+ disable_acpi();
+ else if (strcmp(arg, "force") == 0) /* force ACPI to be enabled */
+ enable_acpi();
+ else
+ return -EINVAL; /* Core will print when we return error */
+
+ return 0;
+}
+early_param("acpi", parse_acpi);
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 2/7] arm64: ACPI: move kernel acpi files to a directory
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone at linaro.org @ 2015-01-23 0:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Al Stone <ahs3@redhat.com>
In preparation for adding some additional arch-dependent ACPI files,
move the existing ones to a directory to try to keep clutter down in
the arch/arm64/kernel directory.
There is no functional change. This patch only moves source files.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/arm64/kernel/Makefile | 2 +-
arch/arm64/kernel/acpi.c | 359 ----------------------------------------
arch/arm64/kernel/acpi/Makefile | 1 +
arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 361 insertions(+), 360 deletions(-)
delete mode 100644 arch/arm64/kernel/acpi.c
create mode 100644 arch/arm64/kernel/acpi/Makefile
create mode 100644 arch/arm64/kernel/acpi/acpi.c
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 8bdc6bd..d7d622f 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -34,7 +34,7 @@ arm64-obj-$(CONFIG_KGDB) += kgdb.o
arm64-obj-$(CONFIG_EFI) += efi.o efi-stub.o efi-entry.o
arm64-obj-$(CONFIG_PCI) += pci.o
arm64-obj-$(CONFIG_ARMV8_DEPRECATED) += armv8_deprecated.o
-arm64-obj-$(CONFIG_ACPI) += acpi.o
+arm64-obj-$(CONFIG_ACPI) += acpi/
obj-y += $(arm64-obj-y) vdso/
obj-m += $(arm64-obj-m)
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
deleted file mode 100644
index ea3c9fc..0000000
--- a/arch/arm64/kernel/acpi.c
+++ /dev/null
@@ -1,359 +0,0 @@
-/*
- * ARM64 Specific Low-Level ACPI Boot Support
- *
- * Copyright (C) 2013-2014, Linaro Ltd.
- * Author: Al Stone <al.stone@linaro.org>
- * Author: Graeme Gregory <graeme.gregory@linaro.org>
- * Author: Hanjun Guo <hanjun.guo@linaro.org>
- * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
- * Author: Naresh Bhat <naresh.bhat@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt) "ACPI: " fmt
-
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/cpumask.h>
-#include <linux/memblock.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/bootmem.h>
-#include <linux/smp.h>
-#include <linux/irqchip/arm-gic-acpi.h>
-
-#include <asm/cputype.h>
-#include <asm/cpu_ops.h>
-
-int acpi_noirq; /* skip ACPI IRQ initialization */
-int acpi_disabled;
-EXPORT_SYMBOL(acpi_disabled);
-
-int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
-EXPORT_SYMBOL(acpi_pci_disabled);
-
-static int enabled_cpus; /* Processors (GICC) with enabled flag in MADT */
-
-/*
- * Since we're on ARM, the default interrupt routing model
- * clearly has to be GIC.
- */
-enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC;
-
-/*
- * __acpi_map_table() will be called before page_init(), so early_ioremap()
- * or early_memremap() should be called here to for ACPI table mapping.
- */
-char *__init __acpi_map_table(unsigned long phys, unsigned long size)
-{
- if (!phys || !size)
- return NULL;
-
- return early_memremap(phys, size);
-}
-
-void __init __acpi_unmap_table(char *map, unsigned long size)
-{
- if (!map || !size)
- return;
-
- early_memunmap(map, size);
-}
-
-/**
- * acpi_map_gic_cpu_interface - generates a logical cpu number
- * and map to MPIDR represented by GICC structure
- * @mpidr: CPU's hardware id to register, MPIDR represented in MADT
- * @enabled: this cpu is enabled or not
- *
- * Returns the logical cpu number which maps to MPIDR
- */
-static int acpi_map_gic_cpu_interface(u64 mpidr, u8 enabled)
-{
- int cpu;
-
- if (mpidr == INVALID_HWID) {
- pr_info("Skip MADT cpu entry with invalid MPIDR\n");
- return -EINVAL;
- }
-
- total_cpus++;
- if (!enabled)
- return -EINVAL;
-
- if (enabled_cpus >= NR_CPUS) {
- pr_warn("NR_CPUS limit of %d reached, Processor %d/0x%llx ignored.\n",
- NR_CPUS, total_cpus, mpidr);
- return -EINVAL;
- }
-
- /* No need to check duplicate MPIDRs for the first CPU */
- if (enabled_cpus) {
- /*
- * Duplicate MPIDRs are a recipe for disaster. Scan
- * all initialized entries and check for
- * duplicates. If any is found just ignore the CPU.
- */
- for_each_possible_cpu(cpu) {
- if (cpu_logical_map(cpu) == mpidr) {
- pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n",
- mpidr);
- return -EINVAL;
- }
- }
-
- /* allocate a logical cpu id for the new comer */
- cpu = cpumask_next_zero(-1, cpu_possible_mask);
- } else {
- /*
- * First GICC entry must be BSP as ACPI spec said
- * in section 5.2.12.15
- */
- if (cpu_logical_map(0) != mpidr) {
- pr_err("First GICC entry with MPIDR 0x%llx is not BSP\n",
- mpidr);
- return -EINVAL;
- }
-
- /*
- * boot_cpu_init() already hold bit 0 in cpu_present_mask
- * for BSP, no need to allocate again.
- */
- cpu = 0;
- }
-
- /* CPU 0 was already initialized */
- if (cpu) {
- cpu_ops[cpu] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
- if (!cpu_ops[cpu])
- return -EINVAL;
-
- if (cpu_ops[cpu]->cpu_init(NULL, cpu))
- return -EOPNOTSUPP;
-
- /* map the logical cpu id to cpu MPIDR */
- cpu_logical_map(cpu) = mpidr;
-
- set_cpu_possible(cpu, true);
- } else {
- /* get cpu0's ops, no need to return if ops is null */
- cpu_ops[0] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
- }
-
- enabled_cpus++;
- return cpu;
-}
-
-static int __init
-acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
- const unsigned long end)
-{
- struct acpi_madt_generic_interrupt *processor;
-
- processor = (struct acpi_madt_generic_interrupt *)header;
-
- if (BAD_MADT_ENTRY(processor, end))
- return -EINVAL;
-
- acpi_table_print_madt_entry(header);
-
- acpi_map_gic_cpu_interface(processor->arm_mpidr & MPIDR_HWID_BITMASK,
- processor->flags & ACPI_MADT_ENABLED);
-
- return 0;
-}
-
-/* Parse GIC cpu interface entries in MADT for SMP init */
-void __init acpi_smp_init_cpus(void)
-{
- int count;
-
- /*
- * do a partial walk of MADT to determine how many CPUs
- * we have including disabled CPUs, and get information
- * we need for SMP init
- */
- count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
- acpi_parse_gic_cpu_interface, 0);
-
- if (!count) {
- pr_err("No GIC CPU interface entries present\n");
- return;
- } else if (count < 0) {
- pr_err("Error parsing GIC CPU interface entry\n");
- return;
- }
-
- /* Make boot-up look pretty */
- pr_info("%d CPUs enabled, %d CPUs total\n", enabled_cpus, total_cpus);
-}
-
-int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
-{
- *irq = irq_find_mapping(NULL, gsi);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
-
-/*
- * success: return IRQ number (>0)
- * failure: return =< 0
- */
-int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
-{
- unsigned int irq;
- unsigned int irq_type;
-
- /*
- * ACPI have no bindings to indicate SPI or PPI, so we
- * use different mappings from DT in ACPI.
- *
- * For FDT
- * PPI interrupt: in the range [0, 15];
- * SPI interrupt: in the range [0, 987];
- *
- * For ACPI, GSI should be unique so using
- * the hwirq directly for the mapping:
- * PPI interrupt: in the range [16, 31];
- * SPI interrupt: in the range [32, 1019];
- */
-
- if (trigger == ACPI_EDGE_SENSITIVE &&
- polarity == ACPI_ACTIVE_LOW)
- irq_type = IRQ_TYPE_EDGE_FALLING;
- else if (trigger == ACPI_EDGE_SENSITIVE &&
- polarity == ACPI_ACTIVE_HIGH)
- irq_type = IRQ_TYPE_EDGE_RISING;
- else if (trigger == ACPI_LEVEL_SENSITIVE &&
- polarity == ACPI_ACTIVE_LOW)
- irq_type = IRQ_TYPE_LEVEL_LOW;
- else if (trigger == ACPI_LEVEL_SENSITIVE &&
- polarity == ACPI_ACTIVE_HIGH)
- irq_type = IRQ_TYPE_LEVEL_HIGH;
- else
- irq_type = IRQ_TYPE_NONE;
-
- /*
- * Since only one GIC is supported in ACPI 5.0, we can
- * create mapping refer to the default domain
- */
- irq = irq_create_mapping(NULL, gsi);
- if (!irq)
- return irq;
-
- /* Set irq type if specified and different than the current one */
- if (irq_type != IRQ_TYPE_NONE &&
- irq_type != irq_get_trigger_type(irq))
- irq_set_irq_type(irq, irq_type);
- return irq;
-}
-EXPORT_SYMBOL_GPL(acpi_register_gsi);
-
-void acpi_unregister_gsi(u32 gsi)
-{
-}
-EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
-
-static int __init acpi_parse_fadt(struct acpi_table_header *table)
-{
- struct acpi_table_fadt *fadt = (struct acpi_table_fadt *)table;
-
- /*
- * Revision in table header is the FADT Major revision,
- * and there is a minor revision of FADT which was introduced
- * by ACPI 5.1, we only deal with ACPI 5.1 or newer revision
- * to get arm boot flags, or we will disable ACPI.
- */
- if (table->revision > 5 ||
- (table->revision == 5 && fadt->minor_revision >= 1)) {
- /*
- * ACPI 5.1 only has two explicit methods to boot up SMP,
- * PSCI and Parking protocol, but the Parking protocol is
- * only specified for ARMv7 now, so make PSCI as the only
- * way for the SMP boot protocol before some updates for
- * the ACPI spec or the Parking protocol spec.
- */
- if (acpi_psci_present())
- return 0;
-
- pr_warn("No PSCI support, will not bring up secondary CPUs\n");
- return -EOPNOTSUPP;
- }
-
- pr_warn("Unsupported FADT revision %d.%d, should be 5.1+, will disable ACPI\n",
- table->revision, fadt->minor_revision);
- disable_acpi();
-
- return -EINVAL;
-}
-
-/*
- * acpi_boot_table_init() called from setup_arch(), always.
- * 1. find RSDP and get its address, and then find XSDT
- * 2. extract all tables and checksums them all
- * 3. check ACPI FADT revision
- *
- * We can parse ACPI boot-time tables such as MADT after
- * this function is called.
- */
-void __init acpi_boot_table_init(void)
-{
- /* If acpi_disabled, bail out */
- if (acpi_disabled)
- return;
-
- /* Initialize the ACPI boot-time table parser. */
- if (acpi_table_init()) {
- disable_acpi();
- return;
- }
-
- if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
- pr_err("Can't find FADT or error happened during parsing FADT\n");
-}
-
-void __init acpi_gic_init(void)
-{
- struct acpi_table_header *table;
- acpi_status status;
- acpi_size tbl_size;
- int err;
-
- if (acpi_disabled)
- return;
-
- status = acpi_get_table_with_size(ACPI_SIG_MADT, 0, &table, &tbl_size);
- if (ACPI_FAILURE(status)) {
- const char *msg = acpi_format_exception(status);
-
- pr_err("Failed to get MADT table, %s\n", msg);
- return;
- }
-
- err = gic_v2_acpi_init(table);
- if (err)
- pr_err("Failed to initialize GIC IRQ controller");
-
- early_acpi_os_unmap_memory((char *)table, tbl_size);
-}
-
-static int __init parse_acpi(char *arg)
-{
- if (!arg)
- return -EINVAL;
-
- /* "acpi=off" disables both ACPI table parsing and interpreter */
- if (strcmp(arg, "off") == 0)
- disable_acpi();
- else if (strcmp(arg, "force") == 0) /* force ACPI to be enabled */
- enable_acpi();
- else
- return -EINVAL; /* Core will print when we return error */
-
- return 0;
-}
-early_param("acpi", parse_acpi);
diff --git a/arch/arm64/kernel/acpi/Makefile b/arch/arm64/kernel/acpi/Makefile
new file mode 100644
index 0000000..e049f94
--- /dev/null
+++ b/arch/arm64/kernel/acpi/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ACPI) += acpi.o
diff --git a/arch/arm64/kernel/acpi/acpi.c b/arch/arm64/kernel/acpi/acpi.c
new file mode 100644
index 0000000..ea3c9fc
--- /dev/null
+++ b/arch/arm64/kernel/acpi/acpi.c
@@ -0,0 +1,359 @@
+/*
+ * ARM64 Specific Low-Level ACPI Boot Support
+ *
+ * Copyright (C) 2013-2014, Linaro Ltd.
+ * Author: Al Stone <al.stone@linaro.org>
+ * Author: Graeme Gregory <graeme.gregory@linaro.org>
+ * Author: Hanjun Guo <hanjun.guo@linaro.org>
+ * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
+ * Author: Naresh Bhat <naresh.bhat@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) "ACPI: " fmt
+
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/cpumask.h>
+#include <linux/memblock.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/bootmem.h>
+#include <linux/smp.h>
+#include <linux/irqchip/arm-gic-acpi.h>
+
+#include <asm/cputype.h>
+#include <asm/cpu_ops.h>
+
+int acpi_noirq; /* skip ACPI IRQ initialization */
+int acpi_disabled;
+EXPORT_SYMBOL(acpi_disabled);
+
+int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
+EXPORT_SYMBOL(acpi_pci_disabled);
+
+static int enabled_cpus; /* Processors (GICC) with enabled flag in MADT */
+
+/*
+ * Since we're on ARM, the default interrupt routing model
+ * clearly has to be GIC.
+ */
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC;
+
+/*
+ * __acpi_map_table() will be called before page_init(), so early_ioremap()
+ * or early_memremap() should be called here to for ACPI table mapping.
+ */
+char *__init __acpi_map_table(unsigned long phys, unsigned long size)
+{
+ if (!phys || !size)
+ return NULL;
+
+ return early_memremap(phys, size);
+}
+
+void __init __acpi_unmap_table(char *map, unsigned long size)
+{
+ if (!map || !size)
+ return;
+
+ early_memunmap(map, size);
+}
+
+/**
+ * acpi_map_gic_cpu_interface - generates a logical cpu number
+ * and map to MPIDR represented by GICC structure
+ * @mpidr: CPU's hardware id to register, MPIDR represented in MADT
+ * @enabled: this cpu is enabled or not
+ *
+ * Returns the logical cpu number which maps to MPIDR
+ */
+static int acpi_map_gic_cpu_interface(u64 mpidr, u8 enabled)
+{
+ int cpu;
+
+ if (mpidr == INVALID_HWID) {
+ pr_info("Skip MADT cpu entry with invalid MPIDR\n");
+ return -EINVAL;
+ }
+
+ total_cpus++;
+ if (!enabled)
+ return -EINVAL;
+
+ if (enabled_cpus >= NR_CPUS) {
+ pr_warn("NR_CPUS limit of %d reached, Processor %d/0x%llx ignored.\n",
+ NR_CPUS, total_cpus, mpidr);
+ return -EINVAL;
+ }
+
+ /* No need to check duplicate MPIDRs for the first CPU */
+ if (enabled_cpus) {
+ /*
+ * Duplicate MPIDRs are a recipe for disaster. Scan
+ * all initialized entries and check for
+ * duplicates. If any is found just ignore the CPU.
+ */
+ for_each_possible_cpu(cpu) {
+ if (cpu_logical_map(cpu) == mpidr) {
+ pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n",
+ mpidr);
+ return -EINVAL;
+ }
+ }
+
+ /* allocate a logical cpu id for the new comer */
+ cpu = cpumask_next_zero(-1, cpu_possible_mask);
+ } else {
+ /*
+ * First GICC entry must be BSP as ACPI spec said
+ * in section 5.2.12.15
+ */
+ if (cpu_logical_map(0) != mpidr) {
+ pr_err("First GICC entry with MPIDR 0x%llx is not BSP\n",
+ mpidr);
+ return -EINVAL;
+ }
+
+ /*
+ * boot_cpu_init() already hold bit 0 in cpu_present_mask
+ * for BSP, no need to allocate again.
+ */
+ cpu = 0;
+ }
+
+ /* CPU 0 was already initialized */
+ if (cpu) {
+ cpu_ops[cpu] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
+ if (!cpu_ops[cpu])
+ return -EINVAL;
+
+ if (cpu_ops[cpu]->cpu_init(NULL, cpu))
+ return -EOPNOTSUPP;
+
+ /* map the logical cpu id to cpu MPIDR */
+ cpu_logical_map(cpu) = mpidr;
+
+ set_cpu_possible(cpu, true);
+ } else {
+ /* get cpu0's ops, no need to return if ops is null */
+ cpu_ops[0] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
+ }
+
+ enabled_cpus++;
+ return cpu;
+}
+
+static int __init
+acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_madt_generic_interrupt *processor;
+
+ processor = (struct acpi_madt_generic_interrupt *)header;
+
+ if (BAD_MADT_ENTRY(processor, end))
+ return -EINVAL;
+
+ acpi_table_print_madt_entry(header);
+
+ acpi_map_gic_cpu_interface(processor->arm_mpidr & MPIDR_HWID_BITMASK,
+ processor->flags & ACPI_MADT_ENABLED);
+
+ return 0;
+}
+
+/* Parse GIC cpu interface entries in MADT for SMP init */
+void __init acpi_smp_init_cpus(void)
+{
+ int count;
+
+ /*
+ * do a partial walk of MADT to determine how many CPUs
+ * we have including disabled CPUs, and get information
+ * we need for SMP init
+ */
+ count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
+ acpi_parse_gic_cpu_interface, 0);
+
+ if (!count) {
+ pr_err("No GIC CPU interface entries present\n");
+ return;
+ } else if (count < 0) {
+ pr_err("Error parsing GIC CPU interface entry\n");
+ return;
+ }
+
+ /* Make boot-up look pretty */
+ pr_info("%d CPUs enabled, %d CPUs total\n", enabled_cpus, total_cpus);
+}
+
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
+{
+ *irq = irq_find_mapping(NULL, gsi);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
+
+/*
+ * success: return IRQ number (>0)
+ * failure: return =< 0
+ */
+int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
+{
+ unsigned int irq;
+ unsigned int irq_type;
+
+ /*
+ * ACPI have no bindings to indicate SPI or PPI, so we
+ * use different mappings from DT in ACPI.
+ *
+ * For FDT
+ * PPI interrupt: in the range [0, 15];
+ * SPI interrupt: in the range [0, 987];
+ *
+ * For ACPI, GSI should be unique so using
+ * the hwirq directly for the mapping:
+ * PPI interrupt: in the range [16, 31];
+ * SPI interrupt: in the range [32, 1019];
+ */
+
+ if (trigger == ACPI_EDGE_SENSITIVE &&
+ polarity == ACPI_ACTIVE_LOW)
+ irq_type = IRQ_TYPE_EDGE_FALLING;
+ else if (trigger == ACPI_EDGE_SENSITIVE &&
+ polarity == ACPI_ACTIVE_HIGH)
+ irq_type = IRQ_TYPE_EDGE_RISING;
+ else if (trigger == ACPI_LEVEL_SENSITIVE &&
+ polarity == ACPI_ACTIVE_LOW)
+ irq_type = IRQ_TYPE_LEVEL_LOW;
+ else if (trigger == ACPI_LEVEL_SENSITIVE &&
+ polarity == ACPI_ACTIVE_HIGH)
+ irq_type = IRQ_TYPE_LEVEL_HIGH;
+ else
+ irq_type = IRQ_TYPE_NONE;
+
+ /*
+ * Since only one GIC is supported in ACPI 5.0, we can
+ * create mapping refer to the default domain
+ */
+ irq = irq_create_mapping(NULL, gsi);
+ if (!irq)
+ return irq;
+
+ /* Set irq type if specified and different than the current one */
+ if (irq_type != IRQ_TYPE_NONE &&
+ irq_type != irq_get_trigger_type(irq))
+ irq_set_irq_type(irq, irq_type);
+ return irq;
+}
+EXPORT_SYMBOL_GPL(acpi_register_gsi);
+
+void acpi_unregister_gsi(u32 gsi)
+{
+}
+EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+static int __init acpi_parse_fadt(struct acpi_table_header *table)
+{
+ struct acpi_table_fadt *fadt = (struct acpi_table_fadt *)table;
+
+ /*
+ * Revision in table header is the FADT Major revision,
+ * and there is a minor revision of FADT which was introduced
+ * by ACPI 5.1, we only deal with ACPI 5.1 or newer revision
+ * to get arm boot flags, or we will disable ACPI.
+ */
+ if (table->revision > 5 ||
+ (table->revision == 5 && fadt->minor_revision >= 1)) {
+ /*
+ * ACPI 5.1 only has two explicit methods to boot up SMP,
+ * PSCI and Parking protocol, but the Parking protocol is
+ * only specified for ARMv7 now, so make PSCI as the only
+ * way for the SMP boot protocol before some updates for
+ * the ACPI spec or the Parking protocol spec.
+ */
+ if (acpi_psci_present())
+ return 0;
+
+ pr_warn("No PSCI support, will not bring up secondary CPUs\n");
+ return -EOPNOTSUPP;
+ }
+
+ pr_warn("Unsupported FADT revision %d.%d, should be 5.1+, will disable ACPI\n",
+ table->revision, fadt->minor_revision);
+ disable_acpi();
+
+ return -EINVAL;
+}
+
+/*
+ * acpi_boot_table_init() called from setup_arch(), always.
+ * 1. find RSDP and get its address, and then find XSDT
+ * 2. extract all tables and checksums them all
+ * 3. check ACPI FADT revision
+ *
+ * We can parse ACPI boot-time tables such as MADT after
+ * this function is called.
+ */
+void __init acpi_boot_table_init(void)
+{
+ /* If acpi_disabled, bail out */
+ if (acpi_disabled)
+ return;
+
+ /* Initialize the ACPI boot-time table parser. */
+ if (acpi_table_init()) {
+ disable_acpi();
+ return;
+ }
+
+ if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
+ pr_err("Can't find FADT or error happened during parsing FADT\n");
+}
+
+void __init acpi_gic_init(void)
+{
+ struct acpi_table_header *table;
+ acpi_status status;
+ acpi_size tbl_size;
+ int err;
+
+ if (acpi_disabled)
+ return;
+
+ status = acpi_get_table_with_size(ACPI_SIG_MADT, 0, &table, &tbl_size);
+ if (ACPI_FAILURE(status)) {
+ const char *msg = acpi_format_exception(status);
+
+ pr_err("Failed to get MADT table, %s\n", msg);
+ return;
+ }
+
+ err = gic_v2_acpi_init(table);
+ if (err)
+ pr_err("Failed to initialize GIC IRQ controller");
+
+ early_acpi_os_unmap_memory((char *)table, tbl_size);
+}
+
+static int __init parse_acpi(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+
+ /* "acpi=off" disables both ACPI table parsing and interpreter */
+ if (strcmp(arg, "off") == 0)
+ disable_acpi();
+ else if (strcmp(arg, "force") == 0) /* force ACPI to be enabled */
+ enable_acpi();
+ else
+ return -EINVAL; /* Core will print when we return error */
+
+ return 0;
+}
+early_param("acpi", parse_acpi);
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 2/7] arm64: ACPI: move kernel acpi files to a directory
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In preparation for adding some additional arch-dependent ACPI files,
move the existing ones to a directory to try to keep clutter down in
the arch/arm64/kernel directory.
There is no functional change. This patch only moves source files.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/arm64/kernel/Makefile | 2 +-
arch/arm64/kernel/acpi.c | 359 ----------------------------------------
arch/arm64/kernel/acpi/Makefile | 1 +
arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 361 insertions(+), 360 deletions(-)
delete mode 100644 arch/arm64/kernel/acpi.c
create mode 100644 arch/arm64/kernel/acpi/Makefile
create mode 100644 arch/arm64/kernel/acpi/acpi.c
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 8bdc6bd..d7d622f 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -34,7 +34,7 @@ arm64-obj-$(CONFIG_KGDB) += kgdb.o
arm64-obj-$(CONFIG_EFI) += efi.o efi-stub.o efi-entry.o
arm64-obj-$(CONFIG_PCI) += pci.o
arm64-obj-$(CONFIG_ARMV8_DEPRECATED) += armv8_deprecated.o
-arm64-obj-$(CONFIG_ACPI) += acpi.o
+arm64-obj-$(CONFIG_ACPI) += acpi/
obj-y += $(arm64-obj-y) vdso/
obj-m += $(arm64-obj-m)
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
deleted file mode 100644
index ea3c9fc..0000000
--- a/arch/arm64/kernel/acpi.c
+++ /dev/null
@@ -1,359 +0,0 @@
-/*
- * ARM64 Specific Low-Level ACPI Boot Support
- *
- * Copyright (C) 2013-2014, Linaro Ltd.
- * Author: Al Stone <al.stone@linaro.org>
- * Author: Graeme Gregory <graeme.gregory@linaro.org>
- * Author: Hanjun Guo <hanjun.guo@linaro.org>
- * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
- * Author: Naresh Bhat <naresh.bhat@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt) "ACPI: " fmt
-
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/cpumask.h>
-#include <linux/memblock.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/bootmem.h>
-#include <linux/smp.h>
-#include <linux/irqchip/arm-gic-acpi.h>
-
-#include <asm/cputype.h>
-#include <asm/cpu_ops.h>
-
-int acpi_noirq; /* skip ACPI IRQ initialization */
-int acpi_disabled;
-EXPORT_SYMBOL(acpi_disabled);
-
-int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
-EXPORT_SYMBOL(acpi_pci_disabled);
-
-static int enabled_cpus; /* Processors (GICC) with enabled flag in MADT */
-
-/*
- * Since we're on ARM, the default interrupt routing model
- * clearly has to be GIC.
- */
-enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC;
-
-/*
- * __acpi_map_table() will be called before page_init(), so early_ioremap()
- * or early_memremap() should be called here to for ACPI table mapping.
- */
-char *__init __acpi_map_table(unsigned long phys, unsigned long size)
-{
- if (!phys || !size)
- return NULL;
-
- return early_memremap(phys, size);
-}
-
-void __init __acpi_unmap_table(char *map, unsigned long size)
-{
- if (!map || !size)
- return;
-
- early_memunmap(map, size);
-}
-
-/**
- * acpi_map_gic_cpu_interface - generates a logical cpu number
- * and map to MPIDR represented by GICC structure
- * @mpidr: CPU's hardware id to register, MPIDR represented in MADT
- * @enabled: this cpu is enabled or not
- *
- * Returns the logical cpu number which maps to MPIDR
- */
-static int acpi_map_gic_cpu_interface(u64 mpidr, u8 enabled)
-{
- int cpu;
-
- if (mpidr = INVALID_HWID) {
- pr_info("Skip MADT cpu entry with invalid MPIDR\n");
- return -EINVAL;
- }
-
- total_cpus++;
- if (!enabled)
- return -EINVAL;
-
- if (enabled_cpus >= NR_CPUS) {
- pr_warn("NR_CPUS limit of %d reached, Processor %d/0x%llx ignored.\n",
- NR_CPUS, total_cpus, mpidr);
- return -EINVAL;
- }
-
- /* No need to check duplicate MPIDRs for the first CPU */
- if (enabled_cpus) {
- /*
- * Duplicate MPIDRs are a recipe for disaster. Scan
- * all initialized entries and check for
- * duplicates. If any is found just ignore the CPU.
- */
- for_each_possible_cpu(cpu) {
- if (cpu_logical_map(cpu) = mpidr) {
- pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n",
- mpidr);
- return -EINVAL;
- }
- }
-
- /* allocate a logical cpu id for the new comer */
- cpu = cpumask_next_zero(-1, cpu_possible_mask);
- } else {
- /*
- * First GICC entry must be BSP as ACPI spec said
- * in section 5.2.12.15
- */
- if (cpu_logical_map(0) != mpidr) {
- pr_err("First GICC entry with MPIDR 0x%llx is not BSP\n",
- mpidr);
- return -EINVAL;
- }
-
- /*
- * boot_cpu_init() already hold bit 0 in cpu_present_mask
- * for BSP, no need to allocate again.
- */
- cpu = 0;
- }
-
- /* CPU 0 was already initialized */
- if (cpu) {
- cpu_ops[cpu] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
- if (!cpu_ops[cpu])
- return -EINVAL;
-
- if (cpu_ops[cpu]->cpu_init(NULL, cpu))
- return -EOPNOTSUPP;
-
- /* map the logical cpu id to cpu MPIDR */
- cpu_logical_map(cpu) = mpidr;
-
- set_cpu_possible(cpu, true);
- } else {
- /* get cpu0's ops, no need to return if ops is null */
- cpu_ops[0] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
- }
-
- enabled_cpus++;
- return cpu;
-}
-
-static int __init
-acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
- const unsigned long end)
-{
- struct acpi_madt_generic_interrupt *processor;
-
- processor = (struct acpi_madt_generic_interrupt *)header;
-
- if (BAD_MADT_ENTRY(processor, end))
- return -EINVAL;
-
- acpi_table_print_madt_entry(header);
-
- acpi_map_gic_cpu_interface(processor->arm_mpidr & MPIDR_HWID_BITMASK,
- processor->flags & ACPI_MADT_ENABLED);
-
- return 0;
-}
-
-/* Parse GIC cpu interface entries in MADT for SMP init */
-void __init acpi_smp_init_cpus(void)
-{
- int count;
-
- /*
- * do a partial walk of MADT to determine how many CPUs
- * we have including disabled CPUs, and get information
- * we need for SMP init
- */
- count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
- acpi_parse_gic_cpu_interface, 0);
-
- if (!count) {
- pr_err("No GIC CPU interface entries present\n");
- return;
- } else if (count < 0) {
- pr_err("Error parsing GIC CPU interface entry\n");
- return;
- }
-
- /* Make boot-up look pretty */
- pr_info("%d CPUs enabled, %d CPUs total\n", enabled_cpus, total_cpus);
-}
-
-int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
-{
- *irq = irq_find_mapping(NULL, gsi);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
-
-/*
- * success: return IRQ number (>0)
- * failure: return =< 0
- */
-int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
-{
- unsigned int irq;
- unsigned int irq_type;
-
- /*
- * ACPI have no bindings to indicate SPI or PPI, so we
- * use different mappings from DT in ACPI.
- *
- * For FDT
- * PPI interrupt: in the range [0, 15];
- * SPI interrupt: in the range [0, 987];
- *
- * For ACPI, GSI should be unique so using
- * the hwirq directly for the mapping:
- * PPI interrupt: in the range [16, 31];
- * SPI interrupt: in the range [32, 1019];
- */
-
- if (trigger = ACPI_EDGE_SENSITIVE &&
- polarity = ACPI_ACTIVE_LOW)
- irq_type = IRQ_TYPE_EDGE_FALLING;
- else if (trigger = ACPI_EDGE_SENSITIVE &&
- polarity = ACPI_ACTIVE_HIGH)
- irq_type = IRQ_TYPE_EDGE_RISING;
- else if (trigger = ACPI_LEVEL_SENSITIVE &&
- polarity = ACPI_ACTIVE_LOW)
- irq_type = IRQ_TYPE_LEVEL_LOW;
- else if (trigger = ACPI_LEVEL_SENSITIVE &&
- polarity = ACPI_ACTIVE_HIGH)
- irq_type = IRQ_TYPE_LEVEL_HIGH;
- else
- irq_type = IRQ_TYPE_NONE;
-
- /*
- * Since only one GIC is supported in ACPI 5.0, we can
- * create mapping refer to the default domain
- */
- irq = irq_create_mapping(NULL, gsi);
- if (!irq)
- return irq;
-
- /* Set irq type if specified and different than the current one */
- if (irq_type != IRQ_TYPE_NONE &&
- irq_type != irq_get_trigger_type(irq))
- irq_set_irq_type(irq, irq_type);
- return irq;
-}
-EXPORT_SYMBOL_GPL(acpi_register_gsi);
-
-void acpi_unregister_gsi(u32 gsi)
-{
-}
-EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
-
-static int __init acpi_parse_fadt(struct acpi_table_header *table)
-{
- struct acpi_table_fadt *fadt = (struct acpi_table_fadt *)table;
-
- /*
- * Revision in table header is the FADT Major revision,
- * and there is a minor revision of FADT which was introduced
- * by ACPI 5.1, we only deal with ACPI 5.1 or newer revision
- * to get arm boot flags, or we will disable ACPI.
- */
- if (table->revision > 5 ||
- (table->revision = 5 && fadt->minor_revision >= 1)) {
- /*
- * ACPI 5.1 only has two explicit methods to boot up SMP,
- * PSCI and Parking protocol, but the Parking protocol is
- * only specified for ARMv7 now, so make PSCI as the only
- * way for the SMP boot protocol before some updates for
- * the ACPI spec or the Parking protocol spec.
- */
- if (acpi_psci_present())
- return 0;
-
- pr_warn("No PSCI support, will not bring up secondary CPUs\n");
- return -EOPNOTSUPP;
- }
-
- pr_warn("Unsupported FADT revision %d.%d, should be 5.1+, will disable ACPI\n",
- table->revision, fadt->minor_revision);
- disable_acpi();
-
- return -EINVAL;
-}
-
-/*
- * acpi_boot_table_init() called from setup_arch(), always.
- * 1. find RSDP and get its address, and then find XSDT
- * 2. extract all tables and checksums them all
- * 3. check ACPI FADT revision
- *
- * We can parse ACPI boot-time tables such as MADT after
- * this function is called.
- */
-void __init acpi_boot_table_init(void)
-{
- /* If acpi_disabled, bail out */
- if (acpi_disabled)
- return;
-
- /* Initialize the ACPI boot-time table parser. */
- if (acpi_table_init()) {
- disable_acpi();
- return;
- }
-
- if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
- pr_err("Can't find FADT or error happened during parsing FADT\n");
-}
-
-void __init acpi_gic_init(void)
-{
- struct acpi_table_header *table;
- acpi_status status;
- acpi_size tbl_size;
- int err;
-
- if (acpi_disabled)
- return;
-
- status = acpi_get_table_with_size(ACPI_SIG_MADT, 0, &table, &tbl_size);
- if (ACPI_FAILURE(status)) {
- const char *msg = acpi_format_exception(status);
-
- pr_err("Failed to get MADT table, %s\n", msg);
- return;
- }
-
- err = gic_v2_acpi_init(table);
- if (err)
- pr_err("Failed to initialize GIC IRQ controller");
-
- early_acpi_os_unmap_memory((char *)table, tbl_size);
-}
-
-static int __init parse_acpi(char *arg)
-{
- if (!arg)
- return -EINVAL;
-
- /* "acpi=off" disables both ACPI table parsing and interpreter */
- if (strcmp(arg, "off") = 0)
- disable_acpi();
- else if (strcmp(arg, "force") = 0) /* force ACPI to be enabled */
- enable_acpi();
- else
- return -EINVAL; /* Core will print when we return error */
-
- return 0;
-}
-early_param("acpi", parse_acpi);
diff --git a/arch/arm64/kernel/acpi/Makefile b/arch/arm64/kernel/acpi/Makefile
new file mode 100644
index 0000000..e049f94
--- /dev/null
+++ b/arch/arm64/kernel/acpi/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ACPI) += acpi.o
diff --git a/arch/arm64/kernel/acpi/acpi.c b/arch/arm64/kernel/acpi/acpi.c
new file mode 100644
index 0000000..ea3c9fc
--- /dev/null
+++ b/arch/arm64/kernel/acpi/acpi.c
@@ -0,0 +1,359 @@
+/*
+ * ARM64 Specific Low-Level ACPI Boot Support
+ *
+ * Copyright (C) 2013-2014, Linaro Ltd.
+ * Author: Al Stone <al.stone@linaro.org>
+ * Author: Graeme Gregory <graeme.gregory@linaro.org>
+ * Author: Hanjun Guo <hanjun.guo@linaro.org>
+ * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
+ * Author: Naresh Bhat <naresh.bhat@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) "ACPI: " fmt
+
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/cpumask.h>
+#include <linux/memblock.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/bootmem.h>
+#include <linux/smp.h>
+#include <linux/irqchip/arm-gic-acpi.h>
+
+#include <asm/cputype.h>
+#include <asm/cpu_ops.h>
+
+int acpi_noirq; /* skip ACPI IRQ initialization */
+int acpi_disabled;
+EXPORT_SYMBOL(acpi_disabled);
+
+int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
+EXPORT_SYMBOL(acpi_pci_disabled);
+
+static int enabled_cpus; /* Processors (GICC) with enabled flag in MADT */
+
+/*
+ * Since we're on ARM, the default interrupt routing model
+ * clearly has to be GIC.
+ */
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC;
+
+/*
+ * __acpi_map_table() will be called before page_init(), so early_ioremap()
+ * or early_memremap() should be called here to for ACPI table mapping.
+ */
+char *__init __acpi_map_table(unsigned long phys, unsigned long size)
+{
+ if (!phys || !size)
+ return NULL;
+
+ return early_memremap(phys, size);
+}
+
+void __init __acpi_unmap_table(char *map, unsigned long size)
+{
+ if (!map || !size)
+ return;
+
+ early_memunmap(map, size);
+}
+
+/**
+ * acpi_map_gic_cpu_interface - generates a logical cpu number
+ * and map to MPIDR represented by GICC structure
+ * @mpidr: CPU's hardware id to register, MPIDR represented in MADT
+ * @enabled: this cpu is enabled or not
+ *
+ * Returns the logical cpu number which maps to MPIDR
+ */
+static int acpi_map_gic_cpu_interface(u64 mpidr, u8 enabled)
+{
+ int cpu;
+
+ if (mpidr = INVALID_HWID) {
+ pr_info("Skip MADT cpu entry with invalid MPIDR\n");
+ return -EINVAL;
+ }
+
+ total_cpus++;
+ if (!enabled)
+ return -EINVAL;
+
+ if (enabled_cpus >= NR_CPUS) {
+ pr_warn("NR_CPUS limit of %d reached, Processor %d/0x%llx ignored.\n",
+ NR_CPUS, total_cpus, mpidr);
+ return -EINVAL;
+ }
+
+ /* No need to check duplicate MPIDRs for the first CPU */
+ if (enabled_cpus) {
+ /*
+ * Duplicate MPIDRs are a recipe for disaster. Scan
+ * all initialized entries and check for
+ * duplicates. If any is found just ignore the CPU.
+ */
+ for_each_possible_cpu(cpu) {
+ if (cpu_logical_map(cpu) = mpidr) {
+ pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n",
+ mpidr);
+ return -EINVAL;
+ }
+ }
+
+ /* allocate a logical cpu id for the new comer */
+ cpu = cpumask_next_zero(-1, cpu_possible_mask);
+ } else {
+ /*
+ * First GICC entry must be BSP as ACPI spec said
+ * in section 5.2.12.15
+ */
+ if (cpu_logical_map(0) != mpidr) {
+ pr_err("First GICC entry with MPIDR 0x%llx is not BSP\n",
+ mpidr);
+ return -EINVAL;
+ }
+
+ /*
+ * boot_cpu_init() already hold bit 0 in cpu_present_mask
+ * for BSP, no need to allocate again.
+ */
+ cpu = 0;
+ }
+
+ /* CPU 0 was already initialized */
+ if (cpu) {
+ cpu_ops[cpu] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
+ if (!cpu_ops[cpu])
+ return -EINVAL;
+
+ if (cpu_ops[cpu]->cpu_init(NULL, cpu))
+ return -EOPNOTSUPP;
+
+ /* map the logical cpu id to cpu MPIDR */
+ cpu_logical_map(cpu) = mpidr;
+
+ set_cpu_possible(cpu, true);
+ } else {
+ /* get cpu0's ops, no need to return if ops is null */
+ cpu_ops[0] = cpu_get_ops(acpi_psci_present() ? "psci" : NULL);
+ }
+
+ enabled_cpus++;
+ return cpu;
+}
+
+static int __init
+acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_madt_generic_interrupt *processor;
+
+ processor = (struct acpi_madt_generic_interrupt *)header;
+
+ if (BAD_MADT_ENTRY(processor, end))
+ return -EINVAL;
+
+ acpi_table_print_madt_entry(header);
+
+ acpi_map_gic_cpu_interface(processor->arm_mpidr & MPIDR_HWID_BITMASK,
+ processor->flags & ACPI_MADT_ENABLED);
+
+ return 0;
+}
+
+/* Parse GIC cpu interface entries in MADT for SMP init */
+void __init acpi_smp_init_cpus(void)
+{
+ int count;
+
+ /*
+ * do a partial walk of MADT to determine how many CPUs
+ * we have including disabled CPUs, and get information
+ * we need for SMP init
+ */
+ count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
+ acpi_parse_gic_cpu_interface, 0);
+
+ if (!count) {
+ pr_err("No GIC CPU interface entries present\n");
+ return;
+ } else if (count < 0) {
+ pr_err("Error parsing GIC CPU interface entry\n");
+ return;
+ }
+
+ /* Make boot-up look pretty */
+ pr_info("%d CPUs enabled, %d CPUs total\n", enabled_cpus, total_cpus);
+}
+
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
+{
+ *irq = irq_find_mapping(NULL, gsi);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
+
+/*
+ * success: return IRQ number (>0)
+ * failure: return =< 0
+ */
+int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
+{
+ unsigned int irq;
+ unsigned int irq_type;
+
+ /*
+ * ACPI have no bindings to indicate SPI or PPI, so we
+ * use different mappings from DT in ACPI.
+ *
+ * For FDT
+ * PPI interrupt: in the range [0, 15];
+ * SPI interrupt: in the range [0, 987];
+ *
+ * For ACPI, GSI should be unique so using
+ * the hwirq directly for the mapping:
+ * PPI interrupt: in the range [16, 31];
+ * SPI interrupt: in the range [32, 1019];
+ */
+
+ if (trigger = ACPI_EDGE_SENSITIVE &&
+ polarity = ACPI_ACTIVE_LOW)
+ irq_type = IRQ_TYPE_EDGE_FALLING;
+ else if (trigger = ACPI_EDGE_SENSITIVE &&
+ polarity = ACPI_ACTIVE_HIGH)
+ irq_type = IRQ_TYPE_EDGE_RISING;
+ else if (trigger = ACPI_LEVEL_SENSITIVE &&
+ polarity = ACPI_ACTIVE_LOW)
+ irq_type = IRQ_TYPE_LEVEL_LOW;
+ else if (trigger = ACPI_LEVEL_SENSITIVE &&
+ polarity = ACPI_ACTIVE_HIGH)
+ irq_type = IRQ_TYPE_LEVEL_HIGH;
+ else
+ irq_type = IRQ_TYPE_NONE;
+
+ /*
+ * Since only one GIC is supported in ACPI 5.0, we can
+ * create mapping refer to the default domain
+ */
+ irq = irq_create_mapping(NULL, gsi);
+ if (!irq)
+ return irq;
+
+ /* Set irq type if specified and different than the current one */
+ if (irq_type != IRQ_TYPE_NONE &&
+ irq_type != irq_get_trigger_type(irq))
+ irq_set_irq_type(irq, irq_type);
+ return irq;
+}
+EXPORT_SYMBOL_GPL(acpi_register_gsi);
+
+void acpi_unregister_gsi(u32 gsi)
+{
+}
+EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+static int __init acpi_parse_fadt(struct acpi_table_header *table)
+{
+ struct acpi_table_fadt *fadt = (struct acpi_table_fadt *)table;
+
+ /*
+ * Revision in table header is the FADT Major revision,
+ * and there is a minor revision of FADT which was introduced
+ * by ACPI 5.1, we only deal with ACPI 5.1 or newer revision
+ * to get arm boot flags, or we will disable ACPI.
+ */
+ if (table->revision > 5 ||
+ (table->revision = 5 && fadt->minor_revision >= 1)) {
+ /*
+ * ACPI 5.1 only has two explicit methods to boot up SMP,
+ * PSCI and Parking protocol, but the Parking protocol is
+ * only specified for ARMv7 now, so make PSCI as the only
+ * way for the SMP boot protocol before some updates for
+ * the ACPI spec or the Parking protocol spec.
+ */
+ if (acpi_psci_present())
+ return 0;
+
+ pr_warn("No PSCI support, will not bring up secondary CPUs\n");
+ return -EOPNOTSUPP;
+ }
+
+ pr_warn("Unsupported FADT revision %d.%d, should be 5.1+, will disable ACPI\n",
+ table->revision, fadt->minor_revision);
+ disable_acpi();
+
+ return -EINVAL;
+}
+
+/*
+ * acpi_boot_table_init() called from setup_arch(), always.
+ * 1. find RSDP and get its address, and then find XSDT
+ * 2. extract all tables and checksums them all
+ * 3. check ACPI FADT revision
+ *
+ * We can parse ACPI boot-time tables such as MADT after
+ * this function is called.
+ */
+void __init acpi_boot_table_init(void)
+{
+ /* If acpi_disabled, bail out */
+ if (acpi_disabled)
+ return;
+
+ /* Initialize the ACPI boot-time table parser. */
+ if (acpi_table_init()) {
+ disable_acpi();
+ return;
+ }
+
+ if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
+ pr_err("Can't find FADT or error happened during parsing FADT\n");
+}
+
+void __init acpi_gic_init(void)
+{
+ struct acpi_table_header *table;
+ acpi_status status;
+ acpi_size tbl_size;
+ int err;
+
+ if (acpi_disabled)
+ return;
+
+ status = acpi_get_table_with_size(ACPI_SIG_MADT, 0, &table, &tbl_size);
+ if (ACPI_FAILURE(status)) {
+ const char *msg = acpi_format_exception(status);
+
+ pr_err("Failed to get MADT table, %s\n", msg);
+ return;
+ }
+
+ err = gic_v2_acpi_init(table);
+ if (err)
+ pr_err("Failed to initialize GIC IRQ controller");
+
+ early_acpi_os_unmap_memory((char *)table, tbl_size);
+}
+
+static int __init parse_acpi(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+
+ /* "acpi=off" disables both ACPI table parsing and interpreter */
+ if (strcmp(arg, "off") = 0)
+ disable_acpi();
+ else if (strcmp(arg, "force") = 0) /* force ACPI to be enabled */
+ enable_acpi();
+ else
+ return -EINVAL; /* Core will print when we return error */
+
+ return 0;
+}
+early_param("acpi", parse_acpi);
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 3/7] x86: ACPI: create arch-dependent version of acpi_osi_handler()
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 0:44 ` al.stone at linaro.org
-1 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. This patch also moves the declaration of
acpi_os_handler() so that the x86 kernel should still compile.
NB: this patch may break compilation on ia64 or arm64 (if ACPI is enabled)
until an upcoming patch adds definitions of acpi_osi_handler() for those
architectures.
No functional change for x86.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/osi.c | 100 ++++++++++++++++++++++++++++++++++++++++++
drivers/acpi/osl.c | 24 ----------
include/linux/acpi.h | 1 +
4 files changed, 102 insertions(+), 25 deletions(-)
create mode 100644 arch/x86/kernel/acpi/osi.c
diff --git a/arch/x86/kernel/acpi/Makefile b/arch/x86/kernel/acpi/Makefile
index 3242e59..e1359c9 100644
--- a/arch/x86/kernel/acpi/Makefile
+++ b/arch/x86/kernel/acpi/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_ACPI) += boot.o
+obj-$(CONFIG_ACPI) += boot.o osi.o
obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o
obj-$(CONFIG_ACPI_APEI) += apei.o
diff --git a/arch/x86/kernel/acpi/osi.c b/arch/x86/kernel/acpi/osi.c
new file mode 100644
index 0000000..fff2b0c
--- /dev/null
+++ b/arch/x86/kernel/acpi/osi.c
@@ -0,0 +1,100 @@
+/*
+ * osi.c - _OSI implementation (moved from drivers/acpi/osl.c)
+ *
+ * Copyright (C) 2000 Andrew Henroid
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (c) 2008 Intel Corporation
+ * Author: Matthew Wilcox <willy@linux.intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+
+#include <linux/acpi.h>
+
+#define _COMPONENT ACPI_OS_SERVICES
+ACPI_MODULE_NAME("osl");
+
+#define PREFIX "ACPI: "
+
+/*
+ * The story of _OSI(Linux)
+ *
+ * From pre-history through Linux-2.6.22,
+ * Linux responded TRUE upon a BIOS OSI(Linux) query.
+ *
+ * Unfortunately, reference BIOS writers got wind of this
+ * and put OSI(Linux) in their example code, quickly exposing
+ * this string as ill-conceived and opening the door to
+ * an un-bounded number of BIOS incompatibilities.
+ *
+ * For example, OSI(Linux) was used on resume to re-POST a
+ * video card on one system, because Linux at that time
+ * could not do a speedy restore in its native driver.
+ * But then upon gaining quick native restore capability,
+ * Linux has no way to tell the BIOS to skip the time-consuming
+ * POST -- putting Linux at a permanent performance disadvantage.
+ * On another system, the BIOS writer used OSI(Linux)
+ * to infer native OS support for IPMI! On other systems,
+ * OSI(Linux) simply got in the way of Linux claiming to
+ * be compatible with other operating systems, exposing
+ * BIOS issues such as skipped device initialization.
+ *
+ * So "Linux" turned out to be a really poor chose of
+ * OSI string, and from Linux-2.6.23 onward we respond FALSE.
+ *
+ * BIOS writers should NOT query _OSI(Linux) on future systems.
+ * Linux will complain on the console when it sees it, and return FALSE.
+ * To get Linux to return TRUE for your system will require
+ * a kernel source update to add a DMI entry,
+ * or boot with "acpi_osi=Linux"
+ */
+
+static struct osi_linux {
+ unsigned int enable:1;
+ unsigned int dmi:1;
+ unsigned int cmdline:1;
+ unsigned int default_disabling:1;
+} osi_linux = {0, 0, 0, 0};
+
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ if (!strcmp("Linux", interface)) {
+
+ printk_once(KERN_NOTICE FW_BUG PREFIX
+ "BIOS _OSI(Linux) query %s%s\n",
+ osi_linux.enable ? "honored" : "ignored",
+ osi_linux.cmdline ? " via cmdline" :
+ osi_linux.dmi ? " via DMI" : "");
+ }
+
+ if (!strcmp("Darwin", interface)) {
+ /*
+ * Apple firmware will behave poorly if it receives positive
+ * answers to "Darwin" and any other OS. Respond positively
+ * to Darwin and then disable all other vendor strings.
+ */
+ acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+ supported = ACPI_UINT32_MAX;
+ }
+
+ return supported;
+}
+
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index f9eeae8..c7f1cd6 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -141,30 +141,6 @@ static struct osi_linux {
unsigned int default_disabling:1;
} osi_linux = {0, 0, 0, 0};
-static u32 acpi_osi_handler(acpi_string interface, u32 supported)
-{
- if (!strcmp("Linux", interface)) {
-
- printk_once(KERN_NOTICE FW_BUG PREFIX
- "BIOS _OSI(Linux) query %s%s\n",
- osi_linux.enable ? "honored" : "ignored",
- osi_linux.cmdline ? " via cmdline" :
- osi_linux.dmi ? " via DMI" : "");
- }
-
- if (!strcmp("Darwin", interface)) {
- /*
- * Apple firmware will behave poorly if it receives positive
- * answers to "Darwin" and any other OS. Respond positively
- * to Darwin and then disable all other vendor strings.
- */
- acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
- supported = ACPI_UINT32_MAX;
- }
-
- return supported;
-}
-
static void __init acpi_request_region (struct acpi_generic_address *gas,
unsigned int length, char *desc)
{
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 87f365e..ec18ab0 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -271,6 +271,7 @@ static inline int acpi_video_display_switch_support(void)
extern int acpi_blacklisted(void);
extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
extern void acpi_osi_setup(char *str);
+extern u32 acpi_osi_handler(acpi_string interface, u32 supported);
#ifdef CONFIG_ACPI_NUMA
int acpi_get_node(acpi_handle handle);
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 3/7] x86: ACPI: create arch-dependent version of acpi_osi_handler()
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone at linaro.org @ 2015-01-23 0:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. This patch also moves the declaration of
acpi_os_handler() so that the x86 kernel should still compile.
NB: this patch may break compilation on ia64 or arm64 (if ACPI is enabled)
until an upcoming patch adds definitions of acpi_osi_handler() for those
architectures.
No functional change for x86.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/osi.c | 100 ++++++++++++++++++++++++++++++++++++++++++
drivers/acpi/osl.c | 24 ----------
include/linux/acpi.h | 1 +
4 files changed, 102 insertions(+), 25 deletions(-)
create mode 100644 arch/x86/kernel/acpi/osi.c
diff --git a/arch/x86/kernel/acpi/Makefile b/arch/x86/kernel/acpi/Makefile
index 3242e59..e1359c9 100644
--- a/arch/x86/kernel/acpi/Makefile
+++ b/arch/x86/kernel/acpi/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_ACPI) += boot.o
+obj-$(CONFIG_ACPI) += boot.o osi.o
obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o
obj-$(CONFIG_ACPI_APEI) += apei.o
diff --git a/arch/x86/kernel/acpi/osi.c b/arch/x86/kernel/acpi/osi.c
new file mode 100644
index 0000000..fff2b0c
--- /dev/null
+++ b/arch/x86/kernel/acpi/osi.c
@@ -0,0 +1,100 @@
+/*
+ * osi.c - _OSI implementation (moved from drivers/acpi/osl.c)
+ *
+ * Copyright (C) 2000 Andrew Henroid
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (c) 2008 Intel Corporation
+ * Author: Matthew Wilcox <willy@linux.intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+
+#include <linux/acpi.h>
+
+#define _COMPONENT ACPI_OS_SERVICES
+ACPI_MODULE_NAME("osl");
+
+#define PREFIX "ACPI: "
+
+/*
+ * The story of _OSI(Linux)
+ *
+ * From pre-history through Linux-2.6.22,
+ * Linux responded TRUE upon a BIOS OSI(Linux) query.
+ *
+ * Unfortunately, reference BIOS writers got wind of this
+ * and put OSI(Linux) in their example code, quickly exposing
+ * this string as ill-conceived and opening the door to
+ * an un-bounded number of BIOS incompatibilities.
+ *
+ * For example, OSI(Linux) was used on resume to re-POST a
+ * video card on one system, because Linux at that time
+ * could not do a speedy restore in its native driver.
+ * But then upon gaining quick native restore capability,
+ * Linux has no way to tell the BIOS to skip the time-consuming
+ * POST -- putting Linux at a permanent performance disadvantage.
+ * On another system, the BIOS writer used OSI(Linux)
+ * to infer native OS support for IPMI! On other systems,
+ * OSI(Linux) simply got in the way of Linux claiming to
+ * be compatible with other operating systems, exposing
+ * BIOS issues such as skipped device initialization.
+ *
+ * So "Linux" turned out to be a really poor chose of
+ * OSI string, and from Linux-2.6.23 onward we respond FALSE.
+ *
+ * BIOS writers should NOT query _OSI(Linux) on future systems.
+ * Linux will complain on the console when it sees it, and return FALSE.
+ * To get Linux to return TRUE for your system will require
+ * a kernel source update to add a DMI entry,
+ * or boot with "acpi_osi=Linux"
+ */
+
+static struct osi_linux {
+ unsigned int enable:1;
+ unsigned int dmi:1;
+ unsigned int cmdline:1;
+ unsigned int default_disabling:1;
+} osi_linux = {0, 0, 0, 0};
+
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ if (!strcmp("Linux", interface)) {
+
+ printk_once(KERN_NOTICE FW_BUG PREFIX
+ "BIOS _OSI(Linux) query %s%s\n",
+ osi_linux.enable ? "honored" : "ignored",
+ osi_linux.cmdline ? " via cmdline" :
+ osi_linux.dmi ? " via DMI" : "");
+ }
+
+ if (!strcmp("Darwin", interface)) {
+ /*
+ * Apple firmware will behave poorly if it receives positive
+ * answers to "Darwin" and any other OS. Respond positively
+ * to Darwin and then disable all other vendor strings.
+ */
+ acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+ supported = ACPI_UINT32_MAX;
+ }
+
+ return supported;
+}
+
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index f9eeae8..c7f1cd6 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -141,30 +141,6 @@ static struct osi_linux {
unsigned int default_disabling:1;
} osi_linux = {0, 0, 0, 0};
-static u32 acpi_osi_handler(acpi_string interface, u32 supported)
-{
- if (!strcmp("Linux", interface)) {
-
- printk_once(KERN_NOTICE FW_BUG PREFIX
- "BIOS _OSI(Linux) query %s%s\n",
- osi_linux.enable ? "honored" : "ignored",
- osi_linux.cmdline ? " via cmdline" :
- osi_linux.dmi ? " via DMI" : "");
- }
-
- if (!strcmp("Darwin", interface)) {
- /*
- * Apple firmware will behave poorly if it receives positive
- * answers to "Darwin" and any other OS. Respond positively
- * to Darwin and then disable all other vendor strings.
- */
- acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
- supported = ACPI_UINT32_MAX;
- }
-
- return supported;
-}
-
static void __init acpi_request_region (struct acpi_generic_address *gas,
unsigned int length, char *desc)
{
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 87f365e..ec18ab0 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -271,6 +271,7 @@ static inline int acpi_video_display_switch_support(void)
extern int acpi_blacklisted(void);
extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
extern void acpi_osi_setup(char *str);
+extern u32 acpi_osi_handler(acpi_string interface, u32 supported);
#ifdef CONFIG_ACPI_NUMA
int acpi_get_node(acpi_handle handle);
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 3/7] x86: ACPI: create arch-dependent version of acpi_osi_handler()
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. This patch also moves the declaration of
acpi_os_handler() so that the x86 kernel should still compile.
NB: this patch may break compilation on ia64 or arm64 (if ACPI is enabled)
until an upcoming patch adds definitions of acpi_osi_handler() for those
architectures.
No functional change for x86.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/osi.c | 100 ++++++++++++++++++++++++++++++++++++++++++
drivers/acpi/osl.c | 24 ----------
include/linux/acpi.h | 1 +
4 files changed, 102 insertions(+), 25 deletions(-)
create mode 100644 arch/x86/kernel/acpi/osi.c
diff --git a/arch/x86/kernel/acpi/Makefile b/arch/x86/kernel/acpi/Makefile
index 3242e59..e1359c9 100644
--- a/arch/x86/kernel/acpi/Makefile
+++ b/arch/x86/kernel/acpi/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_ACPI) += boot.o
+obj-$(CONFIG_ACPI) += boot.o osi.o
obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o
obj-$(CONFIG_ACPI_APEI) += apei.o
diff --git a/arch/x86/kernel/acpi/osi.c b/arch/x86/kernel/acpi/osi.c
new file mode 100644
index 0000000..fff2b0c
--- /dev/null
+++ b/arch/x86/kernel/acpi/osi.c
@@ -0,0 +1,100 @@
+/*
+ * osi.c - _OSI implementation (moved from drivers/acpi/osl.c)
+ *
+ * Copyright (C) 2000 Andrew Henroid
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (c) 2008 Intel Corporation
+ * Author: Matthew Wilcox <willy@linux.intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+
+#include <linux/acpi.h>
+
+#define _COMPONENT ACPI_OS_SERVICES
+ACPI_MODULE_NAME("osl");
+
+#define PREFIX "ACPI: "
+
+/*
+ * The story of _OSI(Linux)
+ *
+ * From pre-history through Linux-2.6.22,
+ * Linux responded TRUE upon a BIOS OSI(Linux) query.
+ *
+ * Unfortunately, reference BIOS writers got wind of this
+ * and put OSI(Linux) in their example code, quickly exposing
+ * this string as ill-conceived and opening the door to
+ * an un-bounded number of BIOS incompatibilities.
+ *
+ * For example, OSI(Linux) was used on resume to re-POST a
+ * video card on one system, because Linux at that time
+ * could not do a speedy restore in its native driver.
+ * But then upon gaining quick native restore capability,
+ * Linux has no way to tell the BIOS to skip the time-consuming
+ * POST -- putting Linux at a permanent performance disadvantage.
+ * On another system, the BIOS writer used OSI(Linux)
+ * to infer native OS support for IPMI! On other systems,
+ * OSI(Linux) simply got in the way of Linux claiming to
+ * be compatible with other operating systems, exposing
+ * BIOS issues such as skipped device initialization.
+ *
+ * So "Linux" turned out to be a really poor chose of
+ * OSI string, and from Linux-2.6.23 onward we respond FALSE.
+ *
+ * BIOS writers should NOT query _OSI(Linux) on future systems.
+ * Linux will complain on the console when it sees it, and return FALSE.
+ * To get Linux to return TRUE for your system will require
+ * a kernel source update to add a DMI entry,
+ * or boot with "acpi_osi=Linux"
+ */
+
+static struct osi_linux {
+ unsigned int enable:1;
+ unsigned int dmi:1;
+ unsigned int cmdline:1;
+ unsigned int default_disabling:1;
+} osi_linux = {0, 0, 0, 0};
+
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ if (!strcmp("Linux", interface)) {
+
+ printk_once(KERN_NOTICE FW_BUG PREFIX
+ "BIOS _OSI(Linux) query %s%s\n",
+ osi_linux.enable ? "honored" : "ignored",
+ osi_linux.cmdline ? " via cmdline" :
+ osi_linux.dmi ? " via DMI" : "");
+ }
+
+ if (!strcmp("Darwin", interface)) {
+ /*
+ * Apple firmware will behave poorly if it receives positive
+ * answers to "Darwin" and any other OS. Respond positively
+ * to Darwin and then disable all other vendor strings.
+ */
+ acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+ supported = ACPI_UINT32_MAX;
+ }
+
+ return supported;
+}
+
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index f9eeae8..c7f1cd6 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -141,30 +141,6 @@ static struct osi_linux {
unsigned int default_disabling:1;
} osi_linux = {0, 0, 0, 0};
-static u32 acpi_osi_handler(acpi_string interface, u32 supported)
-{
- if (!strcmp("Linux", interface)) {
-
- printk_once(KERN_NOTICE FW_BUG PREFIX
- "BIOS _OSI(Linux) query %s%s\n",
- osi_linux.enable ? "honored" : "ignored",
- osi_linux.cmdline ? " via cmdline" :
- osi_linux.dmi ? " via DMI" : "");
- }
-
- if (!strcmp("Darwin", interface)) {
- /*
- * Apple firmware will behave poorly if it receives positive
- * answers to "Darwin" and any other OS. Respond positively
- * to Darwin and then disable all other vendor strings.
- */
- acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
- supported = ACPI_UINT32_MAX;
- }
-
- return supported;
-}
-
static void __init acpi_request_region (struct acpi_generic_address *gas,
unsigned int length, char *desc)
{
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 87f365e..ec18ab0 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -271,6 +271,7 @@ static inline int acpi_video_display_switch_support(void)
extern int acpi_blacklisted(void);
extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
extern void acpi_osi_setup(char *str);
+extern u32 acpi_osi_handler(acpi_string interface, u32 supported);
#ifdef CONFIG_ACPI_NUMA
int acpi_get_node(acpi_handle handle);
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 4/7] ia64: ACPI: create arch-dependent version of acpi_osi_handler()
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 0:44 ` al.stone at linaro.org
-1 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. The declaration of acpi_os_handler() was moved in
a previous patch.
No functional change for ia64.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/ia64/kernel/acpi/Makefile | 2 +-
arch/ia64/kernel/acpi/osi.c | 119 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 120 insertions(+), 1 deletion(-)
create mode 100644 arch/ia64/kernel/acpi/osi.c
diff --git a/arch/ia64/kernel/acpi/Makefile b/arch/ia64/kernel/acpi/Makefile
index 8c12745..475b530 100644
--- a/arch/ia64/kernel/acpi/Makefile
+++ b/arch/ia64/kernel/acpi/Makefile
@@ -1 +1 @@
-obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
+obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o osi.o
diff --git a/arch/ia64/kernel/acpi/osi.c b/arch/ia64/kernel/acpi/osi.c
new file mode 100644
index 0000000..80dbc8a
--- /dev/null
+++ b/arch/ia64/kernel/acpi/osi.c
@@ -0,0 +1,119 @@
+/*
+ * osi.c - _OSI implementation (moved from drivers/acpi/osl.c)
+ *
+ * Copyright (C) 2000 Andrew Henroid
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (c) 2008 Intel Corporation
+ * Author: Matthew Wilcox <willy@linux.intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/kmod.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/nmi.h>
+#include <linux/acpi.h>
+#include <linux/efi.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/jiffies.h>
+#include <linux/semaphore.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#include "internal.h"
+
+#define _COMPONENT ACPI_OS_SERVICES
+ACPI_MODULE_NAME("osl");
+
+/*
+ * The story of _OSI(Linux)
+ *
+ * From pre-history through Linux-2.6.22,
+ * Linux responded TRUE upon a BIOS OSI(Linux) query.
+ *
+ * Unfortunately, reference BIOS writers got wind of this
+ * and put OSI(Linux) in their example code, quickly exposing
+ * this string as ill-conceived and opening the door to
+ * an un-bounded number of BIOS incompatibilities.
+ *
+ * For example, OSI(Linux) was used on resume to re-POST a
+ * video card on one system, because Linux at that time
+ * could not do a speedy restore in its native driver.
+ * But then upon gaining quick native restore capability,
+ * Linux has no way to tell the BIOS to skip the time-consuming
+ * POST -- putting Linux at a permanent performance disadvantage.
+ * On another system, the BIOS writer used OSI(Linux)
+ * to infer native OS support for IPMI! On other systems,
+ * OSI(Linux) simply got in the way of Linux claiming to
+ * be compatible with other operating systems, exposing
+ * BIOS issues such as skipped device initialization.
+ *
+ * So "Linux" turned out to be a really poor chose of
+ * OSI string, and from Linux-2.6.23 onward we respond FALSE.
+ *
+ * BIOS writers should NOT query _OSI(Linux) on future systems.
+ * Linux will complain on the console when it sees it, and return FALSE.
+ * To get Linux to return TRUE for your system will require
+ * a kernel source update to add a DMI entry,
+ * or boot with "acpi_osi=Linux"
+ */
+
+static struct osi_linux {
+ unsigned int enable:1;
+ unsigned int dmi:1;
+ unsigned int cmdline:1;
+ unsigned int default_disabling:1;
+} osi_linux = {0, 0, 0, 0};
+
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ if (!strcmp("Linux", interface)) {
+
+ printk_once(KERN_NOTICE FW_BUG PREFIX
+ "BIOS _OSI(Linux) query %s%s\n",
+ osi_linux.enable ? "honored" : "ignored",
+ osi_linux.cmdline ? " via cmdline" :
+ osi_linux.dmi ? " via DMI" : "");
+ }
+
+ if (!strcmp("Darwin", interface)) {
+ /*
+ * Apple firmware will behave poorly if it receives positive
+ * answers to "Darwin" and any other OS. Respond positively
+ * to Darwin and then disable all other vendor strings.
+ */
+ acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+ supported = ACPI_UINT32_MAX;
+ }
+
+ return supported;
+}
+
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 4/7] ia64: ACPI: create arch-dependent version of acpi_osi_handler()
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone at linaro.org @ 2015-01-23 0:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. The declaration of acpi_os_handler() was moved in
a previous patch.
No functional change for ia64.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/ia64/kernel/acpi/Makefile | 2 +-
arch/ia64/kernel/acpi/osi.c | 119 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 120 insertions(+), 1 deletion(-)
create mode 100644 arch/ia64/kernel/acpi/osi.c
diff --git a/arch/ia64/kernel/acpi/Makefile b/arch/ia64/kernel/acpi/Makefile
index 8c12745..475b530 100644
--- a/arch/ia64/kernel/acpi/Makefile
+++ b/arch/ia64/kernel/acpi/Makefile
@@ -1 +1 @@
-obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
+obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o osi.o
diff --git a/arch/ia64/kernel/acpi/osi.c b/arch/ia64/kernel/acpi/osi.c
new file mode 100644
index 0000000..80dbc8a
--- /dev/null
+++ b/arch/ia64/kernel/acpi/osi.c
@@ -0,0 +1,119 @@
+/*
+ * osi.c - _OSI implementation (moved from drivers/acpi/osl.c)
+ *
+ * Copyright (C) 2000 Andrew Henroid
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (c) 2008 Intel Corporation
+ * Author: Matthew Wilcox <willy@linux.intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/kmod.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/nmi.h>
+#include <linux/acpi.h>
+#include <linux/efi.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/jiffies.h>
+#include <linux/semaphore.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#include "internal.h"
+
+#define _COMPONENT ACPI_OS_SERVICES
+ACPI_MODULE_NAME("osl");
+
+/*
+ * The story of _OSI(Linux)
+ *
+ * From pre-history through Linux-2.6.22,
+ * Linux responded TRUE upon a BIOS OSI(Linux) query.
+ *
+ * Unfortunately, reference BIOS writers got wind of this
+ * and put OSI(Linux) in their example code, quickly exposing
+ * this string as ill-conceived and opening the door to
+ * an un-bounded number of BIOS incompatibilities.
+ *
+ * For example, OSI(Linux) was used on resume to re-POST a
+ * video card on one system, because Linux at that time
+ * could not do a speedy restore in its native driver.
+ * But then upon gaining quick native restore capability,
+ * Linux has no way to tell the BIOS to skip the time-consuming
+ * POST -- putting Linux at a permanent performance disadvantage.
+ * On another system, the BIOS writer used OSI(Linux)
+ * to infer native OS support for IPMI! On other systems,
+ * OSI(Linux) simply got in the way of Linux claiming to
+ * be compatible with other operating systems, exposing
+ * BIOS issues such as skipped device initialization.
+ *
+ * So "Linux" turned out to be a really poor chose of
+ * OSI string, and from Linux-2.6.23 onward we respond FALSE.
+ *
+ * BIOS writers should NOT query _OSI(Linux) on future systems.
+ * Linux will complain on the console when it sees it, and return FALSE.
+ * To get Linux to return TRUE for your system will require
+ * a kernel source update to add a DMI entry,
+ * or boot with "acpi_osi=Linux"
+ */
+
+static struct osi_linux {
+ unsigned int enable:1;
+ unsigned int dmi:1;
+ unsigned int cmdline:1;
+ unsigned int default_disabling:1;
+} osi_linux = {0, 0, 0, 0};
+
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ if (!strcmp("Linux", interface)) {
+
+ printk_once(KERN_NOTICE FW_BUG PREFIX
+ "BIOS _OSI(Linux) query %s%s\n",
+ osi_linux.enable ? "honored" : "ignored",
+ osi_linux.cmdline ? " via cmdline" :
+ osi_linux.dmi ? " via DMI" : "");
+ }
+
+ if (!strcmp("Darwin", interface)) {
+ /*
+ * Apple firmware will behave poorly if it receives positive
+ * answers to "Darwin" and any other OS. Respond positively
+ * to Darwin and then disable all other vendor strings.
+ */
+ acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+ supported = ACPI_UINT32_MAX;
+ }
+
+ return supported;
+}
+
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 4/7] ia64: ACPI: create arch-dependent version of acpi_osi_handler()
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. The declaration of acpi_os_handler() was moved in
a previous patch.
No functional change for ia64.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/ia64/kernel/acpi/Makefile | 2 +-
arch/ia64/kernel/acpi/osi.c | 119 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 120 insertions(+), 1 deletion(-)
create mode 100644 arch/ia64/kernel/acpi/osi.c
diff --git a/arch/ia64/kernel/acpi/Makefile b/arch/ia64/kernel/acpi/Makefile
index 8c12745..475b530 100644
--- a/arch/ia64/kernel/acpi/Makefile
+++ b/arch/ia64/kernel/acpi/Makefile
@@ -1 +1 @@
-obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o
+obj-$(CONFIG_ACPI) += acpi.o acpi-ext.o osi.o
diff --git a/arch/ia64/kernel/acpi/osi.c b/arch/ia64/kernel/acpi/osi.c
new file mode 100644
index 0000000..80dbc8a
--- /dev/null
+++ b/arch/ia64/kernel/acpi/osi.c
@@ -0,0 +1,119 @@
+/*
+ * osi.c - _OSI implementation (moved from drivers/acpi/osl.c)
+ *
+ * Copyright (C) 2000 Andrew Henroid
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (c) 2008 Intel Corporation
+ * Author: Matthew Wilcox <willy@linux.intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/kmod.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/nmi.h>
+#include <linux/acpi.h>
+#include <linux/efi.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/jiffies.h>
+#include <linux/semaphore.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#include "internal.h"
+
+#define _COMPONENT ACPI_OS_SERVICES
+ACPI_MODULE_NAME("osl");
+
+/*
+ * The story of _OSI(Linux)
+ *
+ * From pre-history through Linux-2.6.22,
+ * Linux responded TRUE upon a BIOS OSI(Linux) query.
+ *
+ * Unfortunately, reference BIOS writers got wind of this
+ * and put OSI(Linux) in their example code, quickly exposing
+ * this string as ill-conceived and opening the door to
+ * an un-bounded number of BIOS incompatibilities.
+ *
+ * For example, OSI(Linux) was used on resume to re-POST a
+ * video card on one system, because Linux at that time
+ * could not do a speedy restore in its native driver.
+ * But then upon gaining quick native restore capability,
+ * Linux has no way to tell the BIOS to skip the time-consuming
+ * POST -- putting Linux at a permanent performance disadvantage.
+ * On another system, the BIOS writer used OSI(Linux)
+ * to infer native OS support for IPMI! On other systems,
+ * OSI(Linux) simply got in the way of Linux claiming to
+ * be compatible with other operating systems, exposing
+ * BIOS issues such as skipped device initialization.
+ *
+ * So "Linux" turned out to be a really poor chose of
+ * OSI string, and from Linux-2.6.23 onward we respond FALSE.
+ *
+ * BIOS writers should NOT query _OSI(Linux) on future systems.
+ * Linux will complain on the console when it sees it, and return FALSE.
+ * To get Linux to return TRUE for your system will require
+ * a kernel source update to add a DMI entry,
+ * or boot with "acpi_osi=Linux"
+ */
+
+static struct osi_linux {
+ unsigned int enable:1;
+ unsigned int dmi:1;
+ unsigned int cmdline:1;
+ unsigned int default_disabling:1;
+} osi_linux = {0, 0, 0, 0};
+
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ if (!strcmp("Linux", interface)) {
+
+ printk_once(KERN_NOTICE FW_BUG PREFIX
+ "BIOS _OSI(Linux) query %s%s\n",
+ osi_linux.enable ? "honored" : "ignored",
+ osi_linux.cmdline ? " via cmdline" :
+ osi_linux.dmi ? " via DMI" : "");
+ }
+
+ if (!strcmp("Darwin", interface)) {
+ /*
+ * Apple firmware will behave poorly if it receives positive
+ * answers to "Darwin" and any other OS. Respond positively
+ * to Darwin and then disable all other vendor strings.
+ */
+ acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+ supported = ACPI_UINT32_MAX;
+ }
+
+ return supported;
+}
+
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 5/7] arm64: ACPI: create arch-dependent version of acpi_osi_handler()
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 0:44 ` al.stone at linaro.org
-1 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. The declaration of acpi_os_handler() was moved in
a previous patch.
Previously, _OSI behaved on arm64 as it did on x86. This patch changes
_OSI so that on arm64 it will issue a warning if invoked, and tell the
firmware that no features have been implemented (i.e., it will always
return false).
In some distant future version of ACPI where _OSI has been completely
deprecated, this implementation and all other architecture implementations
should be removed.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/arm64/kernel/acpi/Makefile | 2 +-
arch/arm64/kernel/acpi/osi.c | 26 ++++++++++++++++++++++++++
2 files changed, 27 insertions(+), 1 deletion(-)
create mode 100644 arch/arm64/kernel/acpi/osi.c
diff --git a/arch/arm64/kernel/acpi/Makefile b/arch/arm64/kernel/acpi/Makefile
index e049f94..15a6172 100644
--- a/arch/arm64/kernel/acpi/Makefile
+++ b/arch/arm64/kernel/acpi/Makefile
@@ -1 +1 @@
-obj-$(CONFIG_ACPI) += acpi.o
+obj-$(CONFIG_ACPI) += acpi.o osi.o
diff --git a/arch/arm64/kernel/acpi/osi.c b/arch/arm64/kernel/acpi/osi.c
new file mode 100644
index 0000000..fa711dc
--- /dev/null
+++ b/arch/arm64/kernel/acpi/osi.c
@@ -0,0 +1,26 @@
+/*
+ * ARM64 Specific ACPI _OSI Support
+ *
+ * Copyright (C) 2015, Linaro Ltd.
+ * Author: Al Stone <al.stone@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) "ACPI: " fmt
+
+#include <linux/acpi.h>
+
+/*
+ * Consensus is to deprecate _OSI for all new ACPI-supported architectures.
+ * So, for arm64, reduce _OSI to a warning message, and tell the firmware
+ * nothing of value.
+ */
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ pr_warn("_OSI was called, but is deprecated for this architecture.\n");
+ return false;
+}
+
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 5/7] arm64: ACPI: create arch-dependent version of acpi_osi_handler()
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone at linaro.org @ 2015-01-23 0:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. The declaration of acpi_os_handler() was moved in
a previous patch.
Previously, _OSI behaved on arm64 as it did on x86. This patch changes
_OSI so that on arm64 it will issue a warning if invoked, and tell the
firmware that no features have been implemented (i.e., it will always
return false).
In some distant future version of ACPI where _OSI has been completely
deprecated, this implementation and all other architecture implementations
should be removed.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/arm64/kernel/acpi/Makefile | 2 +-
arch/arm64/kernel/acpi/osi.c | 26 ++++++++++++++++++++++++++
2 files changed, 27 insertions(+), 1 deletion(-)
create mode 100644 arch/arm64/kernel/acpi/osi.c
diff --git a/arch/arm64/kernel/acpi/Makefile b/arch/arm64/kernel/acpi/Makefile
index e049f94..15a6172 100644
--- a/arch/arm64/kernel/acpi/Makefile
+++ b/arch/arm64/kernel/acpi/Makefile
@@ -1 +1 @@
-obj-$(CONFIG_ACPI) += acpi.o
+obj-$(CONFIG_ACPI) += acpi.o osi.o
diff --git a/arch/arm64/kernel/acpi/osi.c b/arch/arm64/kernel/acpi/osi.c
new file mode 100644
index 0000000..fa711dc
--- /dev/null
+++ b/arch/arm64/kernel/acpi/osi.c
@@ -0,0 +1,26 @@
+/*
+ * ARM64 Specific ACPI _OSI Support
+ *
+ * Copyright (C) 2015, Linaro Ltd.
+ * Author: Al Stone <al.stone@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) "ACPI: " fmt
+
+#include <linux/acpi.h>
+
+/*
+ * Consensus is to deprecate _OSI for all new ACPI-supported architectures.
+ * So, for arm64, reduce _OSI to a warning message, and tell the firmware
+ * nothing of value.
+ */
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ pr_warn("_OSI was called, but is deprecated for this architecture.\n");
+ return false;
+}
+
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 5/7] arm64: ACPI: create arch-dependent version of acpi_osi_handler()
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
In order to deprecate the use of _OSI for arm64 or other new architectures,
we need to make the default handler something we can change for various
platforms. This patch moves the definition of acpi_osi_handler() -- the
function used by ACPICA as a callback for evaluating _OSI -- into arch-
dependent ACPI files. The declaration of acpi_os_handler() was moved in
a previous patch.
Previously, _OSI behaved on arm64 as it did on x86. This patch changes
_OSI so that on arm64 it will issue a warning if invoked, and tell the
firmware that no features have been implemented (i.e., it will always
return false).
In some distant future version of ACPI where _OSI has been completely
deprecated, this implementation and all other architecture implementations
should be removed.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/arm64/kernel/acpi/Makefile | 2 +-
arch/arm64/kernel/acpi/osi.c | 26 ++++++++++++++++++++++++++
2 files changed, 27 insertions(+), 1 deletion(-)
create mode 100644 arch/arm64/kernel/acpi/osi.c
diff --git a/arch/arm64/kernel/acpi/Makefile b/arch/arm64/kernel/acpi/Makefile
index e049f94..15a6172 100644
--- a/arch/arm64/kernel/acpi/Makefile
+++ b/arch/arm64/kernel/acpi/Makefile
@@ -1 +1 @@
-obj-$(CONFIG_ACPI) += acpi.o
+obj-$(CONFIG_ACPI) += acpi.o osi.o
diff --git a/arch/arm64/kernel/acpi/osi.c b/arch/arm64/kernel/acpi/osi.c
new file mode 100644
index 0000000..fa711dc
--- /dev/null
+++ b/arch/arm64/kernel/acpi/osi.c
@@ -0,0 +1,26 @@
+/*
+ * ARM64 Specific ACPI _OSI Support
+ *
+ * Copyright (C) 2015, Linaro Ltd.
+ * Author: Al Stone <al.stone@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) "ACPI: " fmt
+
+#include <linux/acpi.h>
+
+/*
+ * Consensus is to deprecate _OSI for all new ACPI-supported architectures.
+ * So, for arm64, reduce _OSI to a warning message, and tell the firmware
+ * nothing of value.
+ */
+u32 acpi_osi_handler(acpi_string interface, u32 supported)
+{
+ pr_warn("_OSI was called, but is deprecated for this architecture.\n");
+ return false;
+}
+
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 6/7] x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent locations
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 0:44 ` al.stone at linaro.org
-1 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
Having moved the _OSI callback function needed by ACPICA from
drivers/acpi to arch-dependent locations, we now move all the
remaining _OSI support functions to arch-dependent files.
This patch is much larger than I had wanted it to be; several of the
functions that implemented acpi_osi* command line options, or did the
set up of the interfaces to be provided by _OSI, shared a static struct.
Hence, I ended up moving a bunch of code at once rather than perhaps a
function at a time.
Further, ACPI blacklisting for x86 (the only architecture using it) used
some of the same _OSI functions. So, it got moved to x86-specific
locations as well.
For x86, there should be no functional change; only the code locations
have really changed.
Even though this patch primarily changes x86-specific files, doing so
has the effect of changing functionality for other architectures that
can use ACPI.
For ia64, there is no more checking of the blacklist; it wasn't used in
the past, however, so its just removing a useless function call. All
other functionality should be unchanged.
For arm64, any use of _OSI will issue a warning that it is deprecated.
All use of _OSI will return false -- i.e., it will return no useful
information to any firmware using it. The ability to temporarily turn
on _OSI, or turn off _OSI, or affect it in other ways from the command
line is no longer available for arm64, either.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++++++++++++++++++++++++++++
arch/x86/kernel/acpi/boot.c | 5 +-
arch/x86/kernel/acpi/osi.c | 157 ++++++++++++++++++-
drivers/acpi/Makefile | 1 -
drivers/acpi/blacklist.c | 323 --------------------------------------
drivers/acpi/osl.c | 193 -----------------------
include/linux/acpi.h | 3 -
8 files changed, 488 insertions(+), 523 deletions(-)
create mode 100644 arch/x86/kernel/acpi/blacklist.c
delete mode 100644 drivers/acpi/blacklist.c
diff --git a/arch/x86/kernel/acpi/Makefile b/arch/x86/kernel/acpi/Makefile
index e1359c9..11000b7 100644
--- a/arch/x86/kernel/acpi/Makefile
+++ b/arch/x86/kernel/acpi/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_ACPI) += boot.o osi.o
+obj-$(CONFIG_ACPI) += boot.o osi.o blacklist.o
obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o
obj-$(CONFIG_ACPI_APEI) += apei.o
diff --git a/arch/x86/kernel/acpi/blacklist.c b/arch/x86/kernel/acpi/blacklist.c
new file mode 100644
index 0000000..ecc04b3
--- /dev/null
+++ b/arch/x86/kernel/acpi/blacklist.c
@@ -0,0 +1,327 @@
+/*
+ * blacklist.c
+ *
+ * Check to see if the given machine has a known bad ACPI BIOS
+ * or if the BIOS is too old.
+ * Check given machine against acpi_osi_dmi_table[].
+ *
+ * Copyright (C) 2004 Len Brown <len.brown@intel.com>
+ * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+
+extern void __init acpi_dmi_osi_linux(int enable,
+ const struct dmi_system_id *d);
+extern void __init acpi_osi_setup(char *str);
+
+#define PREFIX "ACPI: "
+
+enum acpi_blacklist_predicates {
+ all_versions,
+ less_than_or_equal,
+ equal,
+ greater_than_or_equal,
+};
+
+struct acpi_blacklist_item {
+ char oem_id[7];
+ char oem_table_id[9];
+ u32 oem_revision;
+ char *table;
+ enum acpi_blacklist_predicates oem_revision_predicate;
+ char *reason;
+ u32 is_critical_error;
+};
+
+static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
+
+/*
+ * POLICY: If *anything* doesn't work, put it on the blacklist.
+ * If they are critical errors, mark it critical, and abort driver load.
+ */
+static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
+ /* Compaq Presario 1700 */
+ {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
+ "Multiple problems", 1},
+ /* Sony FX120, FX140, FX150? */
+ {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
+ "ACPI driver problem", 1},
+ /* Compaq Presario 800, Insyde BIOS */
+ {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
+ "Does not use _REG to protect EC OpRegions", 1},
+ /* IBM 600E - _ADR should return 7, but it returns 1 */
+ {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
+ "Incorrect _ADR", 1},
+
+ {""}
+};
+
+int __init acpi_blacklisted(void)
+{
+ int i = 0;
+ int blacklisted = 0;
+ struct acpi_table_header table_header;
+
+ while (acpi_blacklist[i].oem_id[0] != '\0') {
+ if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
+ i++;
+ continue;
+ }
+
+ if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
+ i++;
+ continue;
+ }
+
+ if (strncmp
+ (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
+ 8)) {
+ i++;
+ continue;
+ }
+
+ if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
+ || (acpi_blacklist[i].oem_revision_predicate ==
+ less_than_or_equal
+ && table_header.oem_revision <=
+ acpi_blacklist[i].oem_revision)
+ || (acpi_blacklist[i].oem_revision_predicate ==
+ greater_than_or_equal
+ && table_header.oem_revision >=
+ acpi_blacklist[i].oem_revision)
+ || (acpi_blacklist[i].oem_revision_predicate == equal
+ && table_header.oem_revision ==
+ acpi_blacklist[i].oem_revision)) {
+
+ printk(KERN_ERR PREFIX
+ "Vendor \"%6.6s\" System \"%8.8s\" "
+ "Revision 0x%x has a known ACPI BIOS problem.\n",
+ acpi_blacklist[i].oem_id,
+ acpi_blacklist[i].oem_table_id,
+ acpi_blacklist[i].oem_revision);
+
+ printk(KERN_ERR PREFIX
+ "Reason: %s. This is a %s error\n",
+ acpi_blacklist[i].reason,
+ (acpi_blacklist[i].
+ is_critical_error ? "non-recoverable" :
+ "recoverable"));
+
+ blacklisted = acpi_blacklist[i].is_critical_error;
+ break;
+ } else {
+ i++;
+ }
+ }
+
+ dmi_check_system(acpi_osi_dmi_table);
+
+ return blacklisted;
+}
+#ifdef CONFIG_DMI
+static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
+{
+ acpi_dmi_osi_linux(1, d); /* enable */
+ return 0;
+}
+static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2006");
+ acpi_osi_setup("!Windows 2006 SP1");
+ acpi_osi_setup("!Windows 2006 SP2");
+ return 0;
+}
+static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2009");
+ return 0;
+}
+static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2012");
+ return 0;
+}
+
+static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Fujitsu Siemens",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
+ },
+ },
+ {
+ /*
+ * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
+ * driver (e.g. nouveau) when user press brightness hotkey.
+ * Currently, nouveau driver didn't do the job and it causes there
+ * have a infinite while loop in DSDT when user press hotkey.
+ * We add MSI GX723's dmi information to this table for workaround
+ * this issue.
+ * Will remove MSI GX723 from the table after nouveau grows support.
+ */
+ .callback = dmi_disable_osi_vista,
+ .ident = "MSI GX723",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Sony VGN-NS10J_S",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Sony VGN-SR290J",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "VGN-NS50B_L",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba Satellite L355",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win7,
+ .ident = "ASUS K50IJ",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba P305D",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba NB100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NB100"),
+ },
+ },
+
+ /*
+ * The wireless hotkey does not work on those machines when
+ * returning true for _OSI("Windows 2012")
+ */
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 7737",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 7537",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 5437",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 3437",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Vostro 3446",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Vostro 3546",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"),
+ },
+ },
+
+ /*
+ * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
+ * Linux ignores it, except for the machines enumerated below.
+ */
+
+ /*
+ * Without this this EEEpc exports a non working WMI interface, with
+ * this it exports a working "good old" eeepc_laptop interface, fixing
+ * both brightness control, and rfkill not working.
+ */
+ {
+ .callback = dmi_enable_osi_linux,
+ .ident = "Asus EEE PC 1015PX",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"),
+ },
+ },
+ {}
+};
+
+#endif /* CONFIG_DMI */
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index d162636..4773f55 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -47,6 +47,9 @@
#include <asm/i8259.h>
#include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
+
+extern int __init acpi_blacklisted(void);
+
static int __initdata acpi_force = 0;
int acpi_disabled;
EXPORT_SYMBOL(acpi_disabled);
@@ -1502,7 +1505,7 @@ void __init acpi_boot_table_init(void)
* If acpi_disabled, bail out
*/
if (acpi_disabled)
- return;
+ return;
/*
* Initialize the ACPI boot-time table parser.
diff --git a/arch/x86/kernel/acpi/osi.c b/arch/x86/kernel/acpi/osi.c
index fff2b0c..761c29e 100644
--- a/arch/x86/kernel/acpi/osi.c
+++ b/arch/x86/kernel/acpi/osi.c
@@ -34,6 +34,8 @@ ACPI_MODULE_NAME("osl");
#define PREFIX "ACPI: "
+static void __init acpi_osi_setup_late(void);
+
/*
* The story of _OSI(Linux)
*
@@ -72,10 +74,14 @@ static struct osi_linux {
unsigned int dmi:1;
unsigned int cmdline:1;
unsigned int default_disabling:1;
-} osi_linux = {0, 0, 0, 0};
+ unsigned int interfaces_added:1;
+} osi_linux = {0, 0, 0, 0, 0};
u32 acpi_osi_handler(acpi_string interface, u32 supported)
{
+ if (!osi_linux.interfaces_added)
+ acpi_osi_setup_late();
+
if (!strcmp("Linux", interface)) {
printk_once(KERN_NOTICE FW_BUG PREFIX
@@ -98,3 +104,152 @@ u32 acpi_osi_handler(acpi_string interface, u32 supported)
return supported;
}
+#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
+#define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */
+
+struct osi_setup_entry {
+ char string[OSI_STRING_LENGTH_MAX];
+ bool enable;
+};
+
+static struct osi_setup_entry
+ osi_setup_entries[OSI_STRING_ENTRIES_MAX] = {
+ {"Module Device", true},
+ {"Processor Device", true},
+ {"3.0 _SCP Extensions", true},
+ {"Processor Aggregator Device", true},
+};
+
+void __init acpi_osi_setup(char *str)
+{
+ struct osi_setup_entry *osi;
+ bool enable = true;
+ int i;
+
+ if (!acpi_gbl_create_osi_method)
+ return;
+
+ if (str == NULL || *str == '\0') {
+ printk(KERN_INFO PREFIX "_OSI method disabled\n");
+ acpi_gbl_create_osi_method = FALSE;
+ return;
+ }
+
+ if (*str == '!') {
+ str++;
+ if (*str == '\0') {
+ osi_linux.default_disabling = 1;
+ return;
+ } else if (*str == '*') {
+ acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ osi->enable = false;
+ }
+ return;
+ }
+ enable = false;
+ }
+
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ if (!strcmp(osi->string, str)) {
+ osi->enable = enable;
+ break;
+ } else if (osi->string[0] == '\0') {
+ osi->enable = enable;
+ strncpy(osi->string, str, OSI_STRING_LENGTH_MAX);
+ break;
+ }
+ }
+}
+
+static void __init set_osi_linux(unsigned int enable)
+{
+ if (osi_linux.enable != enable)
+ osi_linux.enable = enable;
+
+ if (osi_linux.enable)
+ acpi_osi_setup("Linux");
+ else
+ acpi_osi_setup("!Linux");
+
+ return;
+}
+
+static void __init acpi_cmdline_osi_linux(unsigned int enable)
+{
+ osi_linux.cmdline = 1; /* cmdline set the default and override DMI */
+ osi_linux.dmi = 0;
+ set_osi_linux(enable);
+
+ return;
+}
+
+void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+
+ if (enable == -1)
+ return;
+
+ osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */
+ set_osi_linux(enable);
+
+ return;
+}
+
+/*
+ * Modify the list of "OS Interfaces" reported to BIOS via _OSI
+ *
+ * empty string disables _OSI
+ * string starting with '!' disables that string
+ * otherwise string is added to list, augmenting built-in strings
+ */
+static void __init acpi_osi_setup_late(void)
+{
+ struct osi_setup_entry *osi;
+ char *str;
+ int i;
+ acpi_status status;
+
+ if (osi_linux.default_disabling) {
+ status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
+ }
+
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ str = osi->string;
+
+ if (*str == '\0')
+ break;
+ if (osi->enable) {
+ status = acpi_install_interface(str);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
+ } else {
+ status = acpi_remove_interface(str);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
+ }
+ }
+}
+
+static int __init osi_setup(char *str)
+{
+ if (str && !strcmp("Linux", str))
+ acpi_cmdline_osi_linux(1);
+ else if (str && !strcmp("!Linux", str))
+ acpi_cmdline_osi_linux(0);
+ else
+ acpi_osi_setup(str);
+
+ return 1;
+}
+
+__setup("acpi_osi=", osi_setup);
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index c346011..3fc0ad3 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -9,7 +9,6 @@ ccflags-$(CONFIG_ACPI_DEBUG) += -DACPI_DEBUG_OUTPUT
# ACPI Boot-Time Table Parsing
#
obj-y += tables.o
-obj-$(CONFIG_X86) += blacklist.o
#
# ACPI Core Subsystem (Interpreter)
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
deleted file mode 100644
index 9b693d5..0000000
--- a/drivers/acpi/blacklist.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * blacklist.c
- *
- * Check to see if the given machine has a known bad ACPI BIOS
- * or if the BIOS is too old.
- * Check given machine against acpi_osi_dmi_table[].
- *
- * Copyright (C) 2004 Len Brown <len.brown@intel.com>
- * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/dmi.h>
-
-#include "internal.h"
-
-enum acpi_blacklist_predicates {
- all_versions,
- less_than_or_equal,
- equal,
- greater_than_or_equal,
-};
-
-struct acpi_blacklist_item {
- char oem_id[7];
- char oem_table_id[9];
- u32 oem_revision;
- char *table;
- enum acpi_blacklist_predicates oem_revision_predicate;
- char *reason;
- u32 is_critical_error;
-};
-
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
-
-/*
- * POLICY: If *anything* doesn't work, put it on the blacklist.
- * If they are critical errors, mark it critical, and abort driver load.
- */
-static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
- /* Compaq Presario 1700 */
- {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
- "Multiple problems", 1},
- /* Sony FX120, FX140, FX150? */
- {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
- "ACPI driver problem", 1},
- /* Compaq Presario 800, Insyde BIOS */
- {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
- "Does not use _REG to protect EC OpRegions", 1},
- /* IBM 600E - _ADR should return 7, but it returns 1 */
- {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
- "Incorrect _ADR", 1},
-
- {""}
-};
-
-int __init acpi_blacklisted(void)
-{
- int i = 0;
- int blacklisted = 0;
- struct acpi_table_header table_header;
-
- while (acpi_blacklist[i].oem_id[0] != '\0') {
- if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
- i++;
- continue;
- }
-
- if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
- i++;
- continue;
- }
-
- if (strncmp
- (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
- 8)) {
- i++;
- continue;
- }
-
- if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
- || (acpi_blacklist[i].oem_revision_predicate ==
- less_than_or_equal
- && table_header.oem_revision <=
- acpi_blacklist[i].oem_revision)
- || (acpi_blacklist[i].oem_revision_predicate ==
- greater_than_or_equal
- && table_header.oem_revision >=
- acpi_blacklist[i].oem_revision)
- || (acpi_blacklist[i].oem_revision_predicate == equal
- && table_header.oem_revision ==
- acpi_blacklist[i].oem_revision)) {
-
- printk(KERN_ERR PREFIX
- "Vendor \"%6.6s\" System \"%8.8s\" "
- "Revision 0x%x has a known ACPI BIOS problem.\n",
- acpi_blacklist[i].oem_id,
- acpi_blacklist[i].oem_table_id,
- acpi_blacklist[i].oem_revision);
-
- printk(KERN_ERR PREFIX
- "Reason: %s. This is a %s error\n",
- acpi_blacklist[i].reason,
- (acpi_blacklist[i].
- is_critical_error ? "non-recoverable" :
- "recoverable"));
-
- blacklisted = acpi_blacklist[i].is_critical_error;
- break;
- } else {
- i++;
- }
- }
-
- dmi_check_system(acpi_osi_dmi_table);
-
- return blacklisted;
-}
-#ifdef CONFIG_DMI
-static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
-{
- acpi_dmi_osi_linux(1, d); /* enable */
- return 0;
-}
-static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2006");
- acpi_osi_setup("!Windows 2006 SP1");
- acpi_osi_setup("!Windows 2006 SP2");
- return 0;
-}
-static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2009");
- return 0;
-}
-static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2012");
- return 0;
-}
-
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Fujitsu Siemens",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
- },
- },
- {
- /*
- * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
- * driver (e.g. nouveau) when user press brightness hotkey.
- * Currently, nouveau driver didn't do the job and it causes there
- * have a infinite while loop in DSDT when user press hotkey.
- * We add MSI GX723's dmi information to this table for workaround
- * this issue.
- * Will remove MSI GX723 from the table after nouveau grows support.
- */
- .callback = dmi_disable_osi_vista,
- .ident = "MSI GX723",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
- DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Sony VGN-NS10J_S",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Sony VGN-SR290J",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "VGN-NS50B_L",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba Satellite L355",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
- },
- },
- {
- .callback = dmi_disable_osi_win7,
- .ident = "ASUS K50IJ",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba P305D",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba NB100",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "NB100"),
- },
- },
-
- /*
- * The wireless hotkey does not work on those machines when
- * returning true for _OSI("Windows 2012")
- */
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 7737",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 7537",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 5437",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 3437",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Vostro 3446",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Vostro 3546",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"),
- },
- },
-
- /*
- * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
- * Linux ignores it, except for the machines enumerated below.
- */
-
- /*
- * Without this this EEEpc exports a non working WMI interface, with
- * this it exports a working "good old" eeepc_laptop interface, fixing
- * both brightness control, and rfkill not working.
- */
- {
- .callback = dmi_enable_osi_linux,
- .ident = "Asus EEE PC 1015PX",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
- DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"),
- },
- },
- {}
-};
-
-#endif /* CONFIG_DMI */
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index c7f1cd6..a0c9940 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -99,48 +99,6 @@ struct acpi_ioremap {
static LIST_HEAD(acpi_ioremaps);
static DEFINE_MUTEX(acpi_ioremap_lock);
-static void __init acpi_osi_setup_late(void);
-
-/*
- * The story of _OSI(Linux)
- *
- * From pre-history through Linux-2.6.22,
- * Linux responded TRUE upon a BIOS OSI(Linux) query.
- *
- * Unfortunately, reference BIOS writers got wind of this
- * and put OSI(Linux) in their example code, quickly exposing
- * this string as ill-conceived and opening the door to
- * an un-bounded number of BIOS incompatibilities.
- *
- * For example, OSI(Linux) was used on resume to re-POST a
- * video card on one system, because Linux at that time
- * could not do a speedy restore in its native driver.
- * But then upon gaining quick native restore capability,
- * Linux has no way to tell the BIOS to skip the time-consuming
- * POST -- putting Linux at a permanent performance disadvantage.
- * On another system, the BIOS writer used OSI(Linux)
- * to infer native OS support for IPMI! On other systems,
- * OSI(Linux) simply got in the way of Linux claiming to
- * be compatible with other operating systems, exposing
- * BIOS issues such as skipped device initialization.
- *
- * So "Linux" turned out to be a really poor chose of
- * OSI string, and from Linux-2.6.23 onward we respond FALSE.
- *
- * BIOS writers should NOT query _OSI(Linux) on future systems.
- * Linux will complain on the console when it sees it, and return FALSE.
- * To get Linux to return TRUE for your system will require
- * a kernel source update to add a DMI entry,
- * or boot with "acpi_osi=Linux"
- */
-
-static struct osi_linux {
- unsigned int enable:1;
- unsigned int dmi:1;
- unsigned int cmdline:1;
- unsigned int default_disabling:1;
-} osi_linux = {0, 0, 0, 0};
-
static void __init acpi_request_region (struct acpi_generic_address *gas,
unsigned int length, char *desc)
{
@@ -1394,156 +1352,6 @@ static int __init acpi_os_name_setup(char *str)
__setup("acpi_os_name=", acpi_os_name_setup);
-#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
-#define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */
-
-struct osi_setup_entry {
- char string[OSI_STRING_LENGTH_MAX];
- bool enable;
-};
-
-static struct osi_setup_entry
- osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
- {"Module Device", true},
- {"Processor Device", true},
- {"3.0 _SCP Extensions", true},
- {"Processor Aggregator Device", true},
-};
-
-void __init acpi_osi_setup(char *str)
-{
- struct osi_setup_entry *osi;
- bool enable = true;
- int i;
-
- if (!acpi_gbl_create_osi_method)
- return;
-
- if (str == NULL || *str == '\0') {
- printk(KERN_INFO PREFIX "_OSI method disabled\n");
- acpi_gbl_create_osi_method = FALSE;
- return;
- }
-
- if (*str == '!') {
- str++;
- if (*str == '\0') {
- osi_linux.default_disabling = 1;
- return;
- } else if (*str == '*') {
- acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- osi->enable = false;
- }
- return;
- }
- enable = false;
- }
-
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- if (!strcmp(osi->string, str)) {
- osi->enable = enable;
- break;
- } else if (osi->string[0] == '\0') {
- osi->enable = enable;
- strncpy(osi->string, str, OSI_STRING_LENGTH_MAX);
- break;
- }
- }
-}
-
-static void __init set_osi_linux(unsigned int enable)
-{
- if (osi_linux.enable != enable)
- osi_linux.enable = enable;
-
- if (osi_linux.enable)
- acpi_osi_setup("Linux");
- else
- acpi_osi_setup("!Linux");
-
- return;
-}
-
-static void __init acpi_cmdline_osi_linux(unsigned int enable)
-{
- osi_linux.cmdline = 1; /* cmdline set the default and override DMI */
- osi_linux.dmi = 0;
- set_osi_linux(enable);
-
- return;
-}
-
-void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
-
- if (enable == -1)
- return;
-
- osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */
- set_osi_linux(enable);
-
- return;
-}
-
-/*
- * Modify the list of "OS Interfaces" reported to BIOS via _OSI
- *
- * empty string disables _OSI
- * string starting with '!' disables that string
- * otherwise string is added to list, augmenting built-in strings
- */
-static void __init acpi_osi_setup_late(void)
-{
- struct osi_setup_entry *osi;
- char *str;
- int i;
- acpi_status status;
-
- if (osi_linux.default_disabling) {
- status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
- }
-
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- str = osi->string;
-
- if (*str == '\0')
- break;
- if (osi->enable) {
- status = acpi_install_interface(str);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
- } else {
- status = acpi_remove_interface(str);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
- }
- }
-}
-
-static int __init osi_setup(char *str)
-{
- if (str && !strcmp("Linux", str))
- acpi_cmdline_osi_linux(1);
- else if (str && !strcmp("!Linux", str))
- acpi_cmdline_osi_linux(0);
- else
- acpi_osi_setup(str);
-
- return 1;
-}
-
-__setup("acpi_osi=", osi_setup);
-
/*
* Disable the auto-serialization of named objects creation methods.
*
@@ -1828,7 +1636,6 @@ acpi_status __init acpi_os_initialize1(void)
BUG_ON(!kacpi_notify_wq);
BUG_ON(!kacpi_hotplug_wq);
acpi_install_interface_handler(acpi_osi_handler);
- acpi_osi_setup_late();
return AE_OK;
}
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index ec18ab0..b345015 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -268,9 +268,6 @@ static inline int acpi_video_display_switch_support(void)
#endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
-extern int acpi_blacklisted(void);
-extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
-extern void acpi_osi_setup(char *str);
extern u32 acpi_osi_handler(acpi_string interface, u32 supported);
#ifdef CONFIG_ACPI_NUMA
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 6/7] x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent locations
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone at linaro.org @ 2015-01-23 0:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Al Stone <ahs3@redhat.com>
Having moved the _OSI callback function needed by ACPICA from
drivers/acpi to arch-dependent locations, we now move all the
remaining _OSI support functions to arch-dependent files.
This patch is much larger than I had wanted it to be; several of the
functions that implemented acpi_osi* command line options, or did the
set up of the interfaces to be provided by _OSI, shared a static struct.
Hence, I ended up moving a bunch of code at once rather than perhaps a
function at a time.
Further, ACPI blacklisting for x86 (the only architecture using it) used
some of the same _OSI functions. So, it got moved to x86-specific
locations as well.
For x86, there should be no functional change; only the code locations
have really changed.
Even though this patch primarily changes x86-specific files, doing so
has the effect of changing functionality for other architectures that
can use ACPI.
For ia64, there is no more checking of the blacklist; it wasn't used in
the past, however, so its just removing a useless function call. All
other functionality should be unchanged.
For arm64, any use of _OSI will issue a warning that it is deprecated.
All use of _OSI will return false -- i.e., it will return no useful
information to any firmware using it. The ability to temporarily turn
on _OSI, or turn off _OSI, or affect it in other ways from the command
line is no longer available for arm64, either.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++++++++++++++++++++++++++++
arch/x86/kernel/acpi/boot.c | 5 +-
arch/x86/kernel/acpi/osi.c | 157 ++++++++++++++++++-
drivers/acpi/Makefile | 1 -
drivers/acpi/blacklist.c | 323 --------------------------------------
drivers/acpi/osl.c | 193 -----------------------
include/linux/acpi.h | 3 -
8 files changed, 488 insertions(+), 523 deletions(-)
create mode 100644 arch/x86/kernel/acpi/blacklist.c
delete mode 100644 drivers/acpi/blacklist.c
diff --git a/arch/x86/kernel/acpi/Makefile b/arch/x86/kernel/acpi/Makefile
index e1359c9..11000b7 100644
--- a/arch/x86/kernel/acpi/Makefile
+++ b/arch/x86/kernel/acpi/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_ACPI) += boot.o osi.o
+obj-$(CONFIG_ACPI) += boot.o osi.o blacklist.o
obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o
obj-$(CONFIG_ACPI_APEI) += apei.o
diff --git a/arch/x86/kernel/acpi/blacklist.c b/arch/x86/kernel/acpi/blacklist.c
new file mode 100644
index 0000000..ecc04b3
--- /dev/null
+++ b/arch/x86/kernel/acpi/blacklist.c
@@ -0,0 +1,327 @@
+/*
+ * blacklist.c
+ *
+ * Check to see if the given machine has a known bad ACPI BIOS
+ * or if the BIOS is too old.
+ * Check given machine against acpi_osi_dmi_table[].
+ *
+ * Copyright (C) 2004 Len Brown <len.brown@intel.com>
+ * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+
+extern void __init acpi_dmi_osi_linux(int enable,
+ const struct dmi_system_id *d);
+extern void __init acpi_osi_setup(char *str);
+
+#define PREFIX "ACPI: "
+
+enum acpi_blacklist_predicates {
+ all_versions,
+ less_than_or_equal,
+ equal,
+ greater_than_or_equal,
+};
+
+struct acpi_blacklist_item {
+ char oem_id[7];
+ char oem_table_id[9];
+ u32 oem_revision;
+ char *table;
+ enum acpi_blacklist_predicates oem_revision_predicate;
+ char *reason;
+ u32 is_critical_error;
+};
+
+static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
+
+/*
+ * POLICY: If *anything* doesn't work, put it on the blacklist.
+ * If they are critical errors, mark it critical, and abort driver load.
+ */
+static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
+ /* Compaq Presario 1700 */
+ {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
+ "Multiple problems", 1},
+ /* Sony FX120, FX140, FX150? */
+ {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
+ "ACPI driver problem", 1},
+ /* Compaq Presario 800, Insyde BIOS */
+ {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
+ "Does not use _REG to protect EC OpRegions", 1},
+ /* IBM 600E - _ADR should return 7, but it returns 1 */
+ {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
+ "Incorrect _ADR", 1},
+
+ {""}
+};
+
+int __init acpi_blacklisted(void)
+{
+ int i = 0;
+ int blacklisted = 0;
+ struct acpi_table_header table_header;
+
+ while (acpi_blacklist[i].oem_id[0] != '\0') {
+ if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
+ i++;
+ continue;
+ }
+
+ if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
+ i++;
+ continue;
+ }
+
+ if (strncmp
+ (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
+ 8)) {
+ i++;
+ continue;
+ }
+
+ if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
+ || (acpi_blacklist[i].oem_revision_predicate ==
+ less_than_or_equal
+ && table_header.oem_revision <=
+ acpi_blacklist[i].oem_revision)
+ || (acpi_blacklist[i].oem_revision_predicate ==
+ greater_than_or_equal
+ && table_header.oem_revision >=
+ acpi_blacklist[i].oem_revision)
+ || (acpi_blacklist[i].oem_revision_predicate == equal
+ && table_header.oem_revision ==
+ acpi_blacklist[i].oem_revision)) {
+
+ printk(KERN_ERR PREFIX
+ "Vendor \"%6.6s\" System \"%8.8s\" "
+ "Revision 0x%x has a known ACPI BIOS problem.\n",
+ acpi_blacklist[i].oem_id,
+ acpi_blacklist[i].oem_table_id,
+ acpi_blacklist[i].oem_revision);
+
+ printk(KERN_ERR PREFIX
+ "Reason: %s. This is a %s error\n",
+ acpi_blacklist[i].reason,
+ (acpi_blacklist[i].
+ is_critical_error ? "non-recoverable" :
+ "recoverable"));
+
+ blacklisted = acpi_blacklist[i].is_critical_error;
+ break;
+ } else {
+ i++;
+ }
+ }
+
+ dmi_check_system(acpi_osi_dmi_table);
+
+ return blacklisted;
+}
+#ifdef CONFIG_DMI
+static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
+{
+ acpi_dmi_osi_linux(1, d); /* enable */
+ return 0;
+}
+static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2006");
+ acpi_osi_setup("!Windows 2006 SP1");
+ acpi_osi_setup("!Windows 2006 SP2");
+ return 0;
+}
+static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2009");
+ return 0;
+}
+static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2012");
+ return 0;
+}
+
+static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Fujitsu Siemens",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
+ },
+ },
+ {
+ /*
+ * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
+ * driver (e.g. nouveau) when user press brightness hotkey.
+ * Currently, nouveau driver didn't do the job and it causes there
+ * have a infinite while loop in DSDT when user press hotkey.
+ * We add MSI GX723's dmi information to this table for workaround
+ * this issue.
+ * Will remove MSI GX723 from the table after nouveau grows support.
+ */
+ .callback = dmi_disable_osi_vista,
+ .ident = "MSI GX723",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Sony VGN-NS10J_S",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Sony VGN-SR290J",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "VGN-NS50B_L",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba Satellite L355",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win7,
+ .ident = "ASUS K50IJ",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba P305D",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba NB100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NB100"),
+ },
+ },
+
+ /*
+ * The wireless hotkey does not work on those machines when
+ * returning true for _OSI("Windows 2012")
+ */
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 7737",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 7537",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 5437",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 3437",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Vostro 3446",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Vostro 3546",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"),
+ },
+ },
+
+ /*
+ * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
+ * Linux ignores it, except for the machines enumerated below.
+ */
+
+ /*
+ * Without this this EEEpc exports a non working WMI interface, with
+ * this it exports a working "good old" eeepc_laptop interface, fixing
+ * both brightness control, and rfkill not working.
+ */
+ {
+ .callback = dmi_enable_osi_linux,
+ .ident = "Asus EEE PC 1015PX",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"),
+ },
+ },
+ {}
+};
+
+#endif /* CONFIG_DMI */
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index d162636..4773f55 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -47,6 +47,9 @@
#include <asm/i8259.h>
#include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
+
+extern int __init acpi_blacklisted(void);
+
static int __initdata acpi_force = 0;
int acpi_disabled;
EXPORT_SYMBOL(acpi_disabled);
@@ -1502,7 +1505,7 @@ void __init acpi_boot_table_init(void)
* If acpi_disabled, bail out
*/
if (acpi_disabled)
- return;
+ return;
/*
* Initialize the ACPI boot-time table parser.
diff --git a/arch/x86/kernel/acpi/osi.c b/arch/x86/kernel/acpi/osi.c
index fff2b0c..761c29e 100644
--- a/arch/x86/kernel/acpi/osi.c
+++ b/arch/x86/kernel/acpi/osi.c
@@ -34,6 +34,8 @@ ACPI_MODULE_NAME("osl");
#define PREFIX "ACPI: "
+static void __init acpi_osi_setup_late(void);
+
/*
* The story of _OSI(Linux)
*
@@ -72,10 +74,14 @@ static struct osi_linux {
unsigned int dmi:1;
unsigned int cmdline:1;
unsigned int default_disabling:1;
-} osi_linux = {0, 0, 0, 0};
+ unsigned int interfaces_added:1;
+} osi_linux = {0, 0, 0, 0, 0};
u32 acpi_osi_handler(acpi_string interface, u32 supported)
{
+ if (!osi_linux.interfaces_added)
+ acpi_osi_setup_late();
+
if (!strcmp("Linux", interface)) {
printk_once(KERN_NOTICE FW_BUG PREFIX
@@ -98,3 +104,152 @@ u32 acpi_osi_handler(acpi_string interface, u32 supported)
return supported;
}
+#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
+#define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */
+
+struct osi_setup_entry {
+ char string[OSI_STRING_LENGTH_MAX];
+ bool enable;
+};
+
+static struct osi_setup_entry
+ osi_setup_entries[OSI_STRING_ENTRIES_MAX] = {
+ {"Module Device", true},
+ {"Processor Device", true},
+ {"3.0 _SCP Extensions", true},
+ {"Processor Aggregator Device", true},
+};
+
+void __init acpi_osi_setup(char *str)
+{
+ struct osi_setup_entry *osi;
+ bool enable = true;
+ int i;
+
+ if (!acpi_gbl_create_osi_method)
+ return;
+
+ if (str == NULL || *str == '\0') {
+ printk(KERN_INFO PREFIX "_OSI method disabled\n");
+ acpi_gbl_create_osi_method = FALSE;
+ return;
+ }
+
+ if (*str == '!') {
+ str++;
+ if (*str == '\0') {
+ osi_linux.default_disabling = 1;
+ return;
+ } else if (*str == '*') {
+ acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ osi->enable = false;
+ }
+ return;
+ }
+ enable = false;
+ }
+
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ if (!strcmp(osi->string, str)) {
+ osi->enable = enable;
+ break;
+ } else if (osi->string[0] == '\0') {
+ osi->enable = enable;
+ strncpy(osi->string, str, OSI_STRING_LENGTH_MAX);
+ break;
+ }
+ }
+}
+
+static void __init set_osi_linux(unsigned int enable)
+{
+ if (osi_linux.enable != enable)
+ osi_linux.enable = enable;
+
+ if (osi_linux.enable)
+ acpi_osi_setup("Linux");
+ else
+ acpi_osi_setup("!Linux");
+
+ return;
+}
+
+static void __init acpi_cmdline_osi_linux(unsigned int enable)
+{
+ osi_linux.cmdline = 1; /* cmdline set the default and override DMI */
+ osi_linux.dmi = 0;
+ set_osi_linux(enable);
+
+ return;
+}
+
+void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+
+ if (enable == -1)
+ return;
+
+ osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */
+ set_osi_linux(enable);
+
+ return;
+}
+
+/*
+ * Modify the list of "OS Interfaces" reported to BIOS via _OSI
+ *
+ * empty string disables _OSI
+ * string starting with '!' disables that string
+ * otherwise string is added to list, augmenting built-in strings
+ */
+static void __init acpi_osi_setup_late(void)
+{
+ struct osi_setup_entry *osi;
+ char *str;
+ int i;
+ acpi_status status;
+
+ if (osi_linux.default_disabling) {
+ status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
+ }
+
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ str = osi->string;
+
+ if (*str == '\0')
+ break;
+ if (osi->enable) {
+ status = acpi_install_interface(str);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
+ } else {
+ status = acpi_remove_interface(str);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
+ }
+ }
+}
+
+static int __init osi_setup(char *str)
+{
+ if (str && !strcmp("Linux", str))
+ acpi_cmdline_osi_linux(1);
+ else if (str && !strcmp("!Linux", str))
+ acpi_cmdline_osi_linux(0);
+ else
+ acpi_osi_setup(str);
+
+ return 1;
+}
+
+__setup("acpi_osi=", osi_setup);
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index c346011..3fc0ad3 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -9,7 +9,6 @@ ccflags-$(CONFIG_ACPI_DEBUG) += -DACPI_DEBUG_OUTPUT
# ACPI Boot-Time Table Parsing
#
obj-y += tables.o
-obj-$(CONFIG_X86) += blacklist.o
#
# ACPI Core Subsystem (Interpreter)
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
deleted file mode 100644
index 9b693d5..0000000
--- a/drivers/acpi/blacklist.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * blacklist.c
- *
- * Check to see if the given machine has a known bad ACPI BIOS
- * or if the BIOS is too old.
- * Check given machine against acpi_osi_dmi_table[].
- *
- * Copyright (C) 2004 Len Brown <len.brown@intel.com>
- * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/dmi.h>
-
-#include "internal.h"
-
-enum acpi_blacklist_predicates {
- all_versions,
- less_than_or_equal,
- equal,
- greater_than_or_equal,
-};
-
-struct acpi_blacklist_item {
- char oem_id[7];
- char oem_table_id[9];
- u32 oem_revision;
- char *table;
- enum acpi_blacklist_predicates oem_revision_predicate;
- char *reason;
- u32 is_critical_error;
-};
-
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
-
-/*
- * POLICY: If *anything* doesn't work, put it on the blacklist.
- * If they are critical errors, mark it critical, and abort driver load.
- */
-static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
- /* Compaq Presario 1700 */
- {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
- "Multiple problems", 1},
- /* Sony FX120, FX140, FX150? */
- {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
- "ACPI driver problem", 1},
- /* Compaq Presario 800, Insyde BIOS */
- {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
- "Does not use _REG to protect EC OpRegions", 1},
- /* IBM 600E - _ADR should return 7, but it returns 1 */
- {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
- "Incorrect _ADR", 1},
-
- {""}
-};
-
-int __init acpi_blacklisted(void)
-{
- int i = 0;
- int blacklisted = 0;
- struct acpi_table_header table_header;
-
- while (acpi_blacklist[i].oem_id[0] != '\0') {
- if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
- i++;
- continue;
- }
-
- if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
- i++;
- continue;
- }
-
- if (strncmp
- (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
- 8)) {
- i++;
- continue;
- }
-
- if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
- || (acpi_blacklist[i].oem_revision_predicate ==
- less_than_or_equal
- && table_header.oem_revision <=
- acpi_blacklist[i].oem_revision)
- || (acpi_blacklist[i].oem_revision_predicate ==
- greater_than_or_equal
- && table_header.oem_revision >=
- acpi_blacklist[i].oem_revision)
- || (acpi_blacklist[i].oem_revision_predicate == equal
- && table_header.oem_revision ==
- acpi_blacklist[i].oem_revision)) {
-
- printk(KERN_ERR PREFIX
- "Vendor \"%6.6s\" System \"%8.8s\" "
- "Revision 0x%x has a known ACPI BIOS problem.\n",
- acpi_blacklist[i].oem_id,
- acpi_blacklist[i].oem_table_id,
- acpi_blacklist[i].oem_revision);
-
- printk(KERN_ERR PREFIX
- "Reason: %s. This is a %s error\n",
- acpi_blacklist[i].reason,
- (acpi_blacklist[i].
- is_critical_error ? "non-recoverable" :
- "recoverable"));
-
- blacklisted = acpi_blacklist[i].is_critical_error;
- break;
- } else {
- i++;
- }
- }
-
- dmi_check_system(acpi_osi_dmi_table);
-
- return blacklisted;
-}
-#ifdef CONFIG_DMI
-static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
-{
- acpi_dmi_osi_linux(1, d); /* enable */
- return 0;
-}
-static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2006");
- acpi_osi_setup("!Windows 2006 SP1");
- acpi_osi_setup("!Windows 2006 SP2");
- return 0;
-}
-static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2009");
- return 0;
-}
-static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2012");
- return 0;
-}
-
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Fujitsu Siemens",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
- },
- },
- {
- /*
- * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
- * driver (e.g. nouveau) when user press brightness hotkey.
- * Currently, nouveau driver didn't do the job and it causes there
- * have a infinite while loop in DSDT when user press hotkey.
- * We add MSI GX723's dmi information to this table for workaround
- * this issue.
- * Will remove MSI GX723 from the table after nouveau grows support.
- */
- .callback = dmi_disable_osi_vista,
- .ident = "MSI GX723",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
- DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Sony VGN-NS10J_S",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Sony VGN-SR290J",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "VGN-NS50B_L",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba Satellite L355",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
- },
- },
- {
- .callback = dmi_disable_osi_win7,
- .ident = "ASUS K50IJ",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba P305D",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba NB100",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "NB100"),
- },
- },
-
- /*
- * The wireless hotkey does not work on those machines when
- * returning true for _OSI("Windows 2012")
- */
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 7737",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 7537",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 5437",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 3437",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Vostro 3446",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Vostro 3546",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"),
- },
- },
-
- /*
- * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
- * Linux ignores it, except for the machines enumerated below.
- */
-
- /*
- * Without this this EEEpc exports a non working WMI interface, with
- * this it exports a working "good old" eeepc_laptop interface, fixing
- * both brightness control, and rfkill not working.
- */
- {
- .callback = dmi_enable_osi_linux,
- .ident = "Asus EEE PC 1015PX",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
- DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"),
- },
- },
- {}
-};
-
-#endif /* CONFIG_DMI */
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index c7f1cd6..a0c9940 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -99,48 +99,6 @@ struct acpi_ioremap {
static LIST_HEAD(acpi_ioremaps);
static DEFINE_MUTEX(acpi_ioremap_lock);
-static void __init acpi_osi_setup_late(void);
-
-/*
- * The story of _OSI(Linux)
- *
- * From pre-history through Linux-2.6.22,
- * Linux responded TRUE upon a BIOS OSI(Linux) query.
- *
- * Unfortunately, reference BIOS writers got wind of this
- * and put OSI(Linux) in their example code, quickly exposing
- * this string as ill-conceived and opening the door to
- * an un-bounded number of BIOS incompatibilities.
- *
- * For example, OSI(Linux) was used on resume to re-POST a
- * video card on one system, because Linux at that time
- * could not do a speedy restore in its native driver.
- * But then upon gaining quick native restore capability,
- * Linux has no way to tell the BIOS to skip the time-consuming
- * POST -- putting Linux at a permanent performance disadvantage.
- * On another system, the BIOS writer used OSI(Linux)
- * to infer native OS support for IPMI! On other systems,
- * OSI(Linux) simply got in the way of Linux claiming to
- * be compatible with other operating systems, exposing
- * BIOS issues such as skipped device initialization.
- *
- * So "Linux" turned out to be a really poor chose of
- * OSI string, and from Linux-2.6.23 onward we respond FALSE.
- *
- * BIOS writers should NOT query _OSI(Linux) on future systems.
- * Linux will complain on the console when it sees it, and return FALSE.
- * To get Linux to return TRUE for your system will require
- * a kernel source update to add a DMI entry,
- * or boot with "acpi_osi=Linux"
- */
-
-static struct osi_linux {
- unsigned int enable:1;
- unsigned int dmi:1;
- unsigned int cmdline:1;
- unsigned int default_disabling:1;
-} osi_linux = {0, 0, 0, 0};
-
static void __init acpi_request_region (struct acpi_generic_address *gas,
unsigned int length, char *desc)
{
@@ -1394,156 +1352,6 @@ static int __init acpi_os_name_setup(char *str)
__setup("acpi_os_name=", acpi_os_name_setup);
-#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
-#define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */
-
-struct osi_setup_entry {
- char string[OSI_STRING_LENGTH_MAX];
- bool enable;
-};
-
-static struct osi_setup_entry
- osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
- {"Module Device", true},
- {"Processor Device", true},
- {"3.0 _SCP Extensions", true},
- {"Processor Aggregator Device", true},
-};
-
-void __init acpi_osi_setup(char *str)
-{
- struct osi_setup_entry *osi;
- bool enable = true;
- int i;
-
- if (!acpi_gbl_create_osi_method)
- return;
-
- if (str == NULL || *str == '\0') {
- printk(KERN_INFO PREFIX "_OSI method disabled\n");
- acpi_gbl_create_osi_method = FALSE;
- return;
- }
-
- if (*str == '!') {
- str++;
- if (*str == '\0') {
- osi_linux.default_disabling = 1;
- return;
- } else if (*str == '*') {
- acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- osi->enable = false;
- }
- return;
- }
- enable = false;
- }
-
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- if (!strcmp(osi->string, str)) {
- osi->enable = enable;
- break;
- } else if (osi->string[0] == '\0') {
- osi->enable = enable;
- strncpy(osi->string, str, OSI_STRING_LENGTH_MAX);
- break;
- }
- }
-}
-
-static void __init set_osi_linux(unsigned int enable)
-{
- if (osi_linux.enable != enable)
- osi_linux.enable = enable;
-
- if (osi_linux.enable)
- acpi_osi_setup("Linux");
- else
- acpi_osi_setup("!Linux");
-
- return;
-}
-
-static void __init acpi_cmdline_osi_linux(unsigned int enable)
-{
- osi_linux.cmdline = 1; /* cmdline set the default and override DMI */
- osi_linux.dmi = 0;
- set_osi_linux(enable);
-
- return;
-}
-
-void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
-
- if (enable == -1)
- return;
-
- osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */
- set_osi_linux(enable);
-
- return;
-}
-
-/*
- * Modify the list of "OS Interfaces" reported to BIOS via _OSI
- *
- * empty string disables _OSI
- * string starting with '!' disables that string
- * otherwise string is added to list, augmenting built-in strings
- */
-static void __init acpi_osi_setup_late(void)
-{
- struct osi_setup_entry *osi;
- char *str;
- int i;
- acpi_status status;
-
- if (osi_linux.default_disabling) {
- status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
- }
-
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- str = osi->string;
-
- if (*str == '\0')
- break;
- if (osi->enable) {
- status = acpi_install_interface(str);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
- } else {
- status = acpi_remove_interface(str);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
- }
- }
-}
-
-static int __init osi_setup(char *str)
-{
- if (str && !strcmp("Linux", str))
- acpi_cmdline_osi_linux(1);
- else if (str && !strcmp("!Linux", str))
- acpi_cmdline_osi_linux(0);
- else
- acpi_osi_setup(str);
-
- return 1;
-}
-
-__setup("acpi_osi=", osi_setup);
-
/*
* Disable the auto-serialization of named objects creation methods.
*
@@ -1828,7 +1636,6 @@ acpi_status __init acpi_os_initialize1(void)
BUG_ON(!kacpi_notify_wq);
BUG_ON(!kacpi_hotplug_wq);
acpi_install_interface_handler(acpi_osi_handler);
- acpi_osi_setup_late();
return AE_OK;
}
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index ec18ab0..b345015 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -268,9 +268,6 @@ static inline int acpi_video_display_switch_support(void)
#endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
-extern int acpi_blacklisted(void);
-extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
-extern void acpi_osi_setup(char *str);
extern u32 acpi_osi_handler(acpi_string interface, u32 supported);
#ifdef CONFIG_ACPI_NUMA
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 6/7] x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent locations
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Al Stone <ahs3@redhat.com>
Having moved the _OSI callback function needed by ACPICA from
drivers/acpi to arch-dependent locations, we now move all the
remaining _OSI support functions to arch-dependent files.
This patch is much larger than I had wanted it to be; several of the
functions that implemented acpi_osi* command line options, or did the
set up of the interfaces to be provided by _OSI, shared a static struct.
Hence, I ended up moving a bunch of code at once rather than perhaps a
function at a time.
Further, ACPI blacklisting for x86 (the only architecture using it) used
some of the same _OSI functions. So, it got moved to x86-specific
locations as well.
For x86, there should be no functional change; only the code locations
have really changed.
Even though this patch primarily changes x86-specific files, doing so
has the effect of changing functionality for other architectures that
can use ACPI.
For ia64, there is no more checking of the blacklist; it wasn't used in
the past, however, so its just removing a useless function call. All
other functionality should be unchanged.
For arm64, any use of _OSI will issue a warning that it is deprecated.
All use of _OSI will return false -- i.e., it will return no useful
information to any firmware using it. The ability to temporarily turn
on _OSI, or turn off _OSI, or affect it in other ways from the command
line is no longer available for arm64, either.
Signed-off-by: Al Stone <al.stone@linaro.org>
---
arch/x86/kernel/acpi/Makefile | 2 +-
arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++++++++++++++++++++++++++++
arch/x86/kernel/acpi/boot.c | 5 +-
arch/x86/kernel/acpi/osi.c | 157 ++++++++++++++++++-
drivers/acpi/Makefile | 1 -
drivers/acpi/blacklist.c | 323 --------------------------------------
drivers/acpi/osl.c | 193 -----------------------
include/linux/acpi.h | 3 -
8 files changed, 488 insertions(+), 523 deletions(-)
create mode 100644 arch/x86/kernel/acpi/blacklist.c
delete mode 100644 drivers/acpi/blacklist.c
diff --git a/arch/x86/kernel/acpi/Makefile b/arch/x86/kernel/acpi/Makefile
index e1359c9..11000b7 100644
--- a/arch/x86/kernel/acpi/Makefile
+++ b/arch/x86/kernel/acpi/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_ACPI) += boot.o osi.o
+obj-$(CONFIG_ACPI) += boot.o osi.o blacklist.o
obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o
obj-$(CONFIG_ACPI_APEI) += apei.o
diff --git a/arch/x86/kernel/acpi/blacklist.c b/arch/x86/kernel/acpi/blacklist.c
new file mode 100644
index 0000000..ecc04b3
--- /dev/null
+++ b/arch/x86/kernel/acpi/blacklist.c
@@ -0,0 +1,327 @@
+/*
+ * blacklist.c
+ *
+ * Check to see if the given machine has a known bad ACPI BIOS
+ * or if the BIOS is too old.
+ * Check given machine against acpi_osi_dmi_table[].
+ *
+ * Copyright (C) 2004 Len Brown <len.brown@intel.com>
+ * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+
+extern void __init acpi_dmi_osi_linux(int enable,
+ const struct dmi_system_id *d);
+extern void __init acpi_osi_setup(char *str);
+
+#define PREFIX "ACPI: "
+
+enum acpi_blacklist_predicates {
+ all_versions,
+ less_than_or_equal,
+ equal,
+ greater_than_or_equal,
+};
+
+struct acpi_blacklist_item {
+ char oem_id[7];
+ char oem_table_id[9];
+ u32 oem_revision;
+ char *table;
+ enum acpi_blacklist_predicates oem_revision_predicate;
+ char *reason;
+ u32 is_critical_error;
+};
+
+static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
+
+/*
+ * POLICY: If *anything* doesn't work, put it on the blacklist.
+ * If they are critical errors, mark it critical, and abort driver load.
+ */
+static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
+ /* Compaq Presario 1700 */
+ {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
+ "Multiple problems", 1},
+ /* Sony FX120, FX140, FX150? */
+ {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
+ "ACPI driver problem", 1},
+ /* Compaq Presario 800, Insyde BIOS */
+ {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
+ "Does not use _REG to protect EC OpRegions", 1},
+ /* IBM 600E - _ADR should return 7, but it returns 1 */
+ {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
+ "Incorrect _ADR", 1},
+
+ {""}
+};
+
+int __init acpi_blacklisted(void)
+{
+ int i = 0;
+ int blacklisted = 0;
+ struct acpi_table_header table_header;
+
+ while (acpi_blacklist[i].oem_id[0] != '\0') {
+ if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
+ i++;
+ continue;
+ }
+
+ if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
+ i++;
+ continue;
+ }
+
+ if (strncmp
+ (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
+ 8)) {
+ i++;
+ continue;
+ }
+
+ if ((acpi_blacklist[i].oem_revision_predicate = all_versions)
+ || (acpi_blacklist[i].oem_revision_predicate =
+ less_than_or_equal
+ && table_header.oem_revision <+ acpi_blacklist[i].oem_revision)
+ || (acpi_blacklist[i].oem_revision_predicate =
+ greater_than_or_equal
+ && table_header.oem_revision >+ acpi_blacklist[i].oem_revision)
+ || (acpi_blacklist[i].oem_revision_predicate = equal
+ && table_header.oem_revision =
+ acpi_blacklist[i].oem_revision)) {
+
+ printk(KERN_ERR PREFIX
+ "Vendor \"%6.6s\" System \"%8.8s\" "
+ "Revision 0x%x has a known ACPI BIOS problem.\n",
+ acpi_blacklist[i].oem_id,
+ acpi_blacklist[i].oem_table_id,
+ acpi_blacklist[i].oem_revision);
+
+ printk(KERN_ERR PREFIX
+ "Reason: %s. This is a %s error\n",
+ acpi_blacklist[i].reason,
+ (acpi_blacklist[i].
+ is_critical_error ? "non-recoverable" :
+ "recoverable"));
+
+ blacklisted = acpi_blacklist[i].is_critical_error;
+ break;
+ } else {
+ i++;
+ }
+ }
+
+ dmi_check_system(acpi_osi_dmi_table);
+
+ return blacklisted;
+}
+#ifdef CONFIG_DMI
+static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
+{
+ acpi_dmi_osi_linux(1, d); /* enable */
+ return 0;
+}
+static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2006");
+ acpi_osi_setup("!Windows 2006 SP1");
+ acpi_osi_setup("!Windows 2006 SP2");
+ return 0;
+}
+static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2009");
+ return 0;
+}
+static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+ acpi_osi_setup("!Windows 2012");
+ return 0;
+}
+
+static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Fujitsu Siemens",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
+ },
+ },
+ {
+ /*
+ * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
+ * driver (e.g. nouveau) when user press brightness hotkey.
+ * Currently, nouveau driver didn't do the job and it causes there
+ * have a infinite while loop in DSDT when user press hotkey.
+ * We add MSI GX723's dmi information to this table for workaround
+ * this issue.
+ * Will remove MSI GX723 from the table after nouveau grows support.
+ */
+ .callback = dmi_disable_osi_vista,
+ .ident = "MSI GX723",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Sony VGN-NS10J_S",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Sony VGN-SR290J",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "VGN-NS50B_L",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba Satellite L355",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win7,
+ .ident = "ASUS K50IJ",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba P305D",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Toshiba NB100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NB100"),
+ },
+ },
+
+ /*
+ * The wireless hotkey does not work on those machines when
+ * returning true for _OSI("Windows 2012")
+ */
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 7737",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 7537",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 5437",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Inspiron 3437",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Vostro 3446",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "Dell Vostro 3546",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"),
+ },
+ },
+
+ /*
+ * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
+ * Linux ignores it, except for the machines enumerated below.
+ */
+
+ /*
+ * Without this this EEEpc exports a non working WMI interface, with
+ * this it exports a working "good old" eeepc_laptop interface, fixing
+ * both brightness control, and rfkill not working.
+ */
+ {
+ .callback = dmi_enable_osi_linux,
+ .ident = "Asus EEE PC 1015PX",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"),
+ },
+ },
+ {}
+};
+
+#endif /* CONFIG_DMI */
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index d162636..4773f55 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -47,6 +47,9 @@
#include <asm/i8259.h>
#include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
+
+extern int __init acpi_blacklisted(void);
+
static int __initdata acpi_force = 0;
int acpi_disabled;
EXPORT_SYMBOL(acpi_disabled);
@@ -1502,7 +1505,7 @@ void __init acpi_boot_table_init(void)
* If acpi_disabled, bail out
*/
if (acpi_disabled)
- return;
+ return;
/*
* Initialize the ACPI boot-time table parser.
diff --git a/arch/x86/kernel/acpi/osi.c b/arch/x86/kernel/acpi/osi.c
index fff2b0c..761c29e 100644
--- a/arch/x86/kernel/acpi/osi.c
+++ b/arch/x86/kernel/acpi/osi.c
@@ -34,6 +34,8 @@ ACPI_MODULE_NAME("osl");
#define PREFIX "ACPI: "
+static void __init acpi_osi_setup_late(void);
+
/*
* The story of _OSI(Linux)
*
@@ -72,10 +74,14 @@ static struct osi_linux {
unsigned int dmi:1;
unsigned int cmdline:1;
unsigned int default_disabling:1;
-} osi_linux = {0, 0, 0, 0};
+ unsigned int interfaces_added:1;
+} osi_linux = {0, 0, 0, 0, 0};
u32 acpi_osi_handler(acpi_string interface, u32 supported)
{
+ if (!osi_linux.interfaces_added)
+ acpi_osi_setup_late();
+
if (!strcmp("Linux", interface)) {
printk_once(KERN_NOTICE FW_BUG PREFIX
@@ -98,3 +104,152 @@ u32 acpi_osi_handler(acpi_string interface, u32 supported)
return supported;
}
+#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
+#define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */
+
+struct osi_setup_entry {
+ char string[OSI_STRING_LENGTH_MAX];
+ bool enable;
+};
+
+static struct osi_setup_entry
+ osi_setup_entries[OSI_STRING_ENTRIES_MAX] = {
+ {"Module Device", true},
+ {"Processor Device", true},
+ {"3.0 _SCP Extensions", true},
+ {"Processor Aggregator Device", true},
+};
+
+void __init acpi_osi_setup(char *str)
+{
+ struct osi_setup_entry *osi;
+ bool enable = true;
+ int i;
+
+ if (!acpi_gbl_create_osi_method)
+ return;
+
+ if (str = NULL || *str = '\0') {
+ printk(KERN_INFO PREFIX "_OSI method disabled\n");
+ acpi_gbl_create_osi_method = FALSE;
+ return;
+ }
+
+ if (*str = '!') {
+ str++;
+ if (*str = '\0') {
+ osi_linux.default_disabling = 1;
+ return;
+ } else if (*str = '*') {
+ acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ osi->enable = false;
+ }
+ return;
+ }
+ enable = false;
+ }
+
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ if (!strcmp(osi->string, str)) {
+ osi->enable = enable;
+ break;
+ } else if (osi->string[0] = '\0') {
+ osi->enable = enable;
+ strncpy(osi->string, str, OSI_STRING_LENGTH_MAX);
+ break;
+ }
+ }
+}
+
+static void __init set_osi_linux(unsigned int enable)
+{
+ if (osi_linux.enable != enable)
+ osi_linux.enable = enable;
+
+ if (osi_linux.enable)
+ acpi_osi_setup("Linux");
+ else
+ acpi_osi_setup("!Linux");
+
+ return;
+}
+
+static void __init acpi_cmdline_osi_linux(unsigned int enable)
+{
+ osi_linux.cmdline = 1; /* cmdline set the default and override DMI */
+ osi_linux.dmi = 0;
+ set_osi_linux(enable);
+
+ return;
+}
+
+void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+
+ if (enable = -1)
+ return;
+
+ osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */
+ set_osi_linux(enable);
+
+ return;
+}
+
+/*
+ * Modify the list of "OS Interfaces" reported to BIOS via _OSI
+ *
+ * empty string disables _OSI
+ * string starting with '!' disables that string
+ * otherwise string is added to list, augmenting built-in strings
+ */
+static void __init acpi_osi_setup_late(void)
+{
+ struct osi_setup_entry *osi;
+ char *str;
+ int i;
+ acpi_status status;
+
+ if (osi_linux.default_disabling) {
+ status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
+ }
+
+ for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+ osi = &osi_setup_entries[i];
+ str = osi->string;
+
+ if (*str = '\0')
+ break;
+ if (osi->enable) {
+ status = acpi_install_interface(str);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
+ } else {
+ status = acpi_remove_interface(str);
+
+ if (ACPI_SUCCESS(status))
+ printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
+ }
+ }
+}
+
+static int __init osi_setup(char *str)
+{
+ if (str && !strcmp("Linux", str))
+ acpi_cmdline_osi_linux(1);
+ else if (str && !strcmp("!Linux", str))
+ acpi_cmdline_osi_linux(0);
+ else
+ acpi_osi_setup(str);
+
+ return 1;
+}
+
+__setup("acpi_osi=", osi_setup);
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index c346011..3fc0ad3 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -9,7 +9,6 @@ ccflags-$(CONFIG_ACPI_DEBUG) += -DACPI_DEBUG_OUTPUT
# ACPI Boot-Time Table Parsing
#
obj-y += tables.o
-obj-$(CONFIG_X86) += blacklist.o
#
# ACPI Core Subsystem (Interpreter)
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
deleted file mode 100644
index 9b693d5..0000000
--- a/drivers/acpi/blacklist.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * blacklist.c
- *
- * Check to see if the given machine has a known bad ACPI BIOS
- * or if the BIOS is too old.
- * Check given machine against acpi_osi_dmi_table[].
- *
- * Copyright (C) 2004 Len Brown <len.brown@intel.com>
- * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/dmi.h>
-
-#include "internal.h"
-
-enum acpi_blacklist_predicates {
- all_versions,
- less_than_or_equal,
- equal,
- greater_than_or_equal,
-};
-
-struct acpi_blacklist_item {
- char oem_id[7];
- char oem_table_id[9];
- u32 oem_revision;
- char *table;
- enum acpi_blacklist_predicates oem_revision_predicate;
- char *reason;
- u32 is_critical_error;
-};
-
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
-
-/*
- * POLICY: If *anything* doesn't work, put it on the blacklist.
- * If they are critical errors, mark it critical, and abort driver load.
- */
-static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
- /* Compaq Presario 1700 */
- {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
- "Multiple problems", 1},
- /* Sony FX120, FX140, FX150? */
- {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
- "ACPI driver problem", 1},
- /* Compaq Presario 800, Insyde BIOS */
- {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
- "Does not use _REG to protect EC OpRegions", 1},
- /* IBM 600E - _ADR should return 7, but it returns 1 */
- {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
- "Incorrect _ADR", 1},
-
- {""}
-};
-
-int __init acpi_blacklisted(void)
-{
- int i = 0;
- int blacklisted = 0;
- struct acpi_table_header table_header;
-
- while (acpi_blacklist[i].oem_id[0] != '\0') {
- if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
- i++;
- continue;
- }
-
- if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
- i++;
- continue;
- }
-
- if (strncmp
- (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
- 8)) {
- i++;
- continue;
- }
-
- if ((acpi_blacklist[i].oem_revision_predicate = all_versions)
- || (acpi_blacklist[i].oem_revision_predicate =
- less_than_or_equal
- && table_header.oem_revision <- acpi_blacklist[i].oem_revision)
- || (acpi_blacklist[i].oem_revision_predicate =
- greater_than_or_equal
- && table_header.oem_revision >- acpi_blacklist[i].oem_revision)
- || (acpi_blacklist[i].oem_revision_predicate = equal
- && table_header.oem_revision =
- acpi_blacklist[i].oem_revision)) {
-
- printk(KERN_ERR PREFIX
- "Vendor \"%6.6s\" System \"%8.8s\" "
- "Revision 0x%x has a known ACPI BIOS problem.\n",
- acpi_blacklist[i].oem_id,
- acpi_blacklist[i].oem_table_id,
- acpi_blacklist[i].oem_revision);
-
- printk(KERN_ERR PREFIX
- "Reason: %s. This is a %s error\n",
- acpi_blacklist[i].reason,
- (acpi_blacklist[i].
- is_critical_error ? "non-recoverable" :
- "recoverable"));
-
- blacklisted = acpi_blacklist[i].is_critical_error;
- break;
- } else {
- i++;
- }
- }
-
- dmi_check_system(acpi_osi_dmi_table);
-
- return blacklisted;
-}
-#ifdef CONFIG_DMI
-static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
-{
- acpi_dmi_osi_linux(1, d); /* enable */
- return 0;
-}
-static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2006");
- acpi_osi_setup("!Windows 2006 SP1");
- acpi_osi_setup("!Windows 2006 SP2");
- return 0;
-}
-static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2009");
- return 0;
-}
-static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
- acpi_osi_setup("!Windows 2012");
- return 0;
-}
-
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Fujitsu Siemens",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
- },
- },
- {
- /*
- * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
- * driver (e.g. nouveau) when user press brightness hotkey.
- * Currently, nouveau driver didn't do the job and it causes there
- * have a infinite while loop in DSDT when user press hotkey.
- * We add MSI GX723's dmi information to this table for workaround
- * this issue.
- * Will remove MSI GX723 from the table after nouveau grows support.
- */
- .callback = dmi_disable_osi_vista,
- .ident = "MSI GX723",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
- DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Sony VGN-NS10J_S",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Sony VGN-SR290J",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "VGN-NS50B_L",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba Satellite L355",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
- },
- },
- {
- .callback = dmi_disable_osi_win7,
- .ident = "ASUS K50IJ",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba P305D",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
- },
- },
- {
- .callback = dmi_disable_osi_vista,
- .ident = "Toshiba NB100",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "NB100"),
- },
- },
-
- /*
- * The wireless hotkey does not work on those machines when
- * returning true for _OSI("Windows 2012")
- */
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 7737",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 7537",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 5437",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Inspiron 3437",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Vostro 3446",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"),
- },
- },
- {
- .callback = dmi_disable_osi_win8,
- .ident = "Dell Vostro 3546",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"),
- },
- },
-
- /*
- * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
- * Linux ignores it, except for the machines enumerated below.
- */
-
- /*
- * Without this this EEEpc exports a non working WMI interface, with
- * this it exports a working "good old" eeepc_laptop interface, fixing
- * both brightness control, and rfkill not working.
- */
- {
- .callback = dmi_enable_osi_linux,
- .ident = "Asus EEE PC 1015PX",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
- DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"),
- },
- },
- {}
-};
-
-#endif /* CONFIG_DMI */
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index c7f1cd6..a0c9940 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -99,48 +99,6 @@ struct acpi_ioremap {
static LIST_HEAD(acpi_ioremaps);
static DEFINE_MUTEX(acpi_ioremap_lock);
-static void __init acpi_osi_setup_late(void);
-
-/*
- * The story of _OSI(Linux)
- *
- * From pre-history through Linux-2.6.22,
- * Linux responded TRUE upon a BIOS OSI(Linux) query.
- *
- * Unfortunately, reference BIOS writers got wind of this
- * and put OSI(Linux) in their example code, quickly exposing
- * this string as ill-conceived and opening the door to
- * an un-bounded number of BIOS incompatibilities.
- *
- * For example, OSI(Linux) was used on resume to re-POST a
- * video card on one system, because Linux at that time
- * could not do a speedy restore in its native driver.
- * But then upon gaining quick native restore capability,
- * Linux has no way to tell the BIOS to skip the time-consuming
- * POST -- putting Linux at a permanent performance disadvantage.
- * On another system, the BIOS writer used OSI(Linux)
- * to infer native OS support for IPMI! On other systems,
- * OSI(Linux) simply got in the way of Linux claiming to
- * be compatible with other operating systems, exposing
- * BIOS issues such as skipped device initialization.
- *
- * So "Linux" turned out to be a really poor chose of
- * OSI string, and from Linux-2.6.23 onward we respond FALSE.
- *
- * BIOS writers should NOT query _OSI(Linux) on future systems.
- * Linux will complain on the console when it sees it, and return FALSE.
- * To get Linux to return TRUE for your system will require
- * a kernel source update to add a DMI entry,
- * or boot with "acpi_osi=Linux"
- */
-
-static struct osi_linux {
- unsigned int enable:1;
- unsigned int dmi:1;
- unsigned int cmdline:1;
- unsigned int default_disabling:1;
-} osi_linux = {0, 0, 0, 0};
-
static void __init acpi_request_region (struct acpi_generic_address *gas,
unsigned int length, char *desc)
{
@@ -1394,156 +1352,6 @@ static int __init acpi_os_name_setup(char *str)
__setup("acpi_os_name=", acpi_os_name_setup);
-#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
-#define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */
-
-struct osi_setup_entry {
- char string[OSI_STRING_LENGTH_MAX];
- bool enable;
-};
-
-static struct osi_setup_entry
- osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
- {"Module Device", true},
- {"Processor Device", true},
- {"3.0 _SCP Extensions", true},
- {"Processor Aggregator Device", true},
-};
-
-void __init acpi_osi_setup(char *str)
-{
- struct osi_setup_entry *osi;
- bool enable = true;
- int i;
-
- if (!acpi_gbl_create_osi_method)
- return;
-
- if (str = NULL || *str = '\0') {
- printk(KERN_INFO PREFIX "_OSI method disabled\n");
- acpi_gbl_create_osi_method = FALSE;
- return;
- }
-
- if (*str = '!') {
- str++;
- if (*str = '\0') {
- osi_linux.default_disabling = 1;
- return;
- } else if (*str = '*') {
- acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- osi->enable = false;
- }
- return;
- }
- enable = false;
- }
-
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- if (!strcmp(osi->string, str)) {
- osi->enable = enable;
- break;
- } else if (osi->string[0] = '\0') {
- osi->enable = enable;
- strncpy(osi->string, str, OSI_STRING_LENGTH_MAX);
- break;
- }
- }
-}
-
-static void __init set_osi_linux(unsigned int enable)
-{
- if (osi_linux.enable != enable)
- osi_linux.enable = enable;
-
- if (osi_linux.enable)
- acpi_osi_setup("Linux");
- else
- acpi_osi_setup("!Linux");
-
- return;
-}
-
-static void __init acpi_cmdline_osi_linux(unsigned int enable)
-{
- osi_linux.cmdline = 1; /* cmdline set the default and override DMI */
- osi_linux.dmi = 0;
- set_osi_linux(enable);
-
- return;
-}
-
-void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
-{
- printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
-
- if (enable = -1)
- return;
-
- osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */
- set_osi_linux(enable);
-
- return;
-}
-
-/*
- * Modify the list of "OS Interfaces" reported to BIOS via _OSI
- *
- * empty string disables _OSI
- * string starting with '!' disables that string
- * otherwise string is added to list, augmenting built-in strings
- */
-static void __init acpi_osi_setup_late(void)
-{
- struct osi_setup_entry *osi;
- char *str;
- int i;
- acpi_status status;
-
- if (osi_linux.default_disabling) {
- status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
- }
-
- for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
- osi = &osi_setup_entries[i];
- str = osi->string;
-
- if (*str = '\0')
- break;
- if (osi->enable) {
- status = acpi_install_interface(str);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
- } else {
- status = acpi_remove_interface(str);
-
- if (ACPI_SUCCESS(status))
- printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
- }
- }
-}
-
-static int __init osi_setup(char *str)
-{
- if (str && !strcmp("Linux", str))
- acpi_cmdline_osi_linux(1);
- else if (str && !strcmp("!Linux", str))
- acpi_cmdline_osi_linux(0);
- else
- acpi_osi_setup(str);
-
- return 1;
-}
-
-__setup("acpi_osi=", osi_setup);
-
/*
* Disable the auto-serialization of named objects creation methods.
*
@@ -1828,7 +1636,6 @@ acpi_status __init acpi_os_initialize1(void)
BUG_ON(!kacpi_notify_wq);
BUG_ON(!kacpi_hotplug_wq);
acpi_install_interface_handler(acpi_osi_handler);
- acpi_osi_setup_late();
return AE_OK;
}
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index ec18ab0..b345015 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -268,9 +268,6 @@ static inline int acpi_video_display_switch_support(void)
#endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
-extern int acpi_blacklisted(void);
-extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
-extern void acpi_osi_setup(char *str);
extern u32 acpi_osi_handler(acpi_string interface, u32 supported);
#ifdef CONFIG_ACPI_NUMA
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 0:44 ` al.stone at linaro.org
-1 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Hanjun Guo <hanjun.guo@linaro.org>
ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
That doesn't make much sense in the ARM context, so set it to "Linux"
when CONFIG_ARM64.
If it is necessary to change the return value from \_OS_ (that is, return
some value other than the default in ACPI_OS_NAME), use the kernel parameter
"acpi_os_name=<string>".
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
---
arch/arm64/Kconfig | 1 +
drivers/acpi/Kconfig | 8 ++++++++
include/acpi/acconfig.h | 2 ++
include/acpi/platform/aclinux.h | 4 ++++
4 files changed, 15 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 915aa16..20677d1 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1,5 +1,6 @@
config ARM64
def_bool y
+ select ACPI_OS_NAME_LINUX if ACPI
select ACPI_REDUCED_HARDWARE_ONLY if ACPI
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 3e3bd35..024c5f0 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
If you are unsure what to do, do not enable this option.
+config ACPI_OS_NAME_LINUX
+ bool "Using Linux for _OS method" if EXPERT
+ def_bool n
+ When used, this option makes sure the _OS method returns
+ the value "Linux".
+
+ If you are unsure what to do, do not enable this option.
+
source "drivers/acpi/apei/Kconfig"
config ACPI_EXTLOG
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index 5a0a3e5..1980bf4 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -69,7 +69,9 @@
* code that will not execute the _OSI method unless _OS matches the string
* below. Therefore, change this string at your own risk.
*/
+#ifndef ACPI_OS_NAME
#define ACPI_OS_NAME "Microsoft Windows NT"
+#endif
/* Maximum objects in the various object caches */
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 1ba7c19..a8a7ee3 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -69,6 +69,10 @@
#define ACPI_REDUCED_HARDWARE 1
#endif
+#ifdef CONFIG_ACPI_OS_NAME_LINUX
+#define ACPI_OS_NAME "Linux"
+#endif
+
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone at linaro.org @ 2015-01-23 0:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Hanjun Guo <hanjun.guo@linaro.org>
ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
That doesn't make much sense in the ARM context, so set it to "Linux"
when CONFIG_ARM64.
If it is necessary to change the return value from \_OS_ (that is, return
some value other than the default in ACPI_OS_NAME), use the kernel parameter
"acpi_os_name=<string>".
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
---
arch/arm64/Kconfig | 1 +
drivers/acpi/Kconfig | 8 ++++++++
include/acpi/acconfig.h | 2 ++
include/acpi/platform/aclinux.h | 4 ++++
4 files changed, 15 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 915aa16..20677d1 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1,5 +1,6 @@
config ARM64
def_bool y
+ select ACPI_OS_NAME_LINUX if ACPI
select ACPI_REDUCED_HARDWARE_ONLY if ACPI
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 3e3bd35..024c5f0 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
If you are unsure what to do, do not enable this option.
+config ACPI_OS_NAME_LINUX
+ bool "Using Linux for _OS method" if EXPERT
+ def_bool n
+ When used, this option makes sure the _OS method returns
+ the value "Linux".
+
+ If you are unsure what to do, do not enable this option.
+
source "drivers/acpi/apei/Kconfig"
config ACPI_EXTLOG
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index 5a0a3e5..1980bf4 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -69,7 +69,9 @@
* code that will not execute the _OSI method unless _OS matches the string
* below. Therefore, change this string at your own risk.
*/
+#ifndef ACPI_OS_NAME
#define ACPI_OS_NAME "Microsoft Windows NT"
+#endif
/* Maximum objects in the various object caches */
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 1ba7c19..a8a7ee3 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -69,6 +69,10 @@
#define ACPI_REDUCED_HARDWARE 1
#endif
+#ifdef CONFIG_ACPI_OS_NAME_LINUX
+#define ACPI_OS_NAME "Linux"
+#endif
+
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
@ 2015-01-23 0:44 ` al.stone at linaro.org
0 siblings, 0 replies; 41+ messages in thread
From: al.stone @ 2015-01-23 0:44 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
From: Hanjun Guo <hanjun.guo@linaro.org>
ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
That doesn't make much sense in the ARM context, so set it to "Linux"
when CONFIG_ARM64.
If it is necessary to change the return value from \_OS_ (that is, return
some value other than the default in ACPI_OS_NAME), use the kernel parameter
"acpi_os_name=<string>".
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
---
arch/arm64/Kconfig | 1 +
drivers/acpi/Kconfig | 8 ++++++++
include/acpi/acconfig.h | 2 ++
include/acpi/platform/aclinux.h | 4 ++++
4 files changed, 15 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 915aa16..20677d1 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1,5 +1,6 @@
config ARM64
def_bool y
+ select ACPI_OS_NAME_LINUX if ACPI
select ACPI_REDUCED_HARDWARE_ONLY if ACPI
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 3e3bd35..024c5f0 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
If you are unsure what to do, do not enable this option.
+config ACPI_OS_NAME_LINUX
+ bool "Using Linux for _OS method" if EXPERT
+ def_bool n
+ When used, this option makes sure the _OS method returns
+ the value "Linux".
+
+ If you are unsure what to do, do not enable this option.
+
source "drivers/acpi/apei/Kconfig"
config ACPI_EXTLOG
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index 5a0a3e5..1980bf4 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -69,7 +69,9 @@
* code that will not execute the _OSI method unless _OS matches the string
* below. Therefore, change this string at your own risk.
*/
+#ifndef ACPI_OS_NAME
#define ACPI_OS_NAME "Microsoft Windows NT"
+#endif
/* Maximum objects in the various object caches */
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 1ba7c19..a8a7ee3 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -69,6 +69,10 @@
#define ACPI_REDUCED_HARDWARE 1
#endif
+#ifdef CONFIG_ACPI_OS_NAME_LINUX
+#define ACPI_OS_NAME "Linux"
+#endif
+
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
--
2.1.0
^ permalink raw reply related [flat|nested] 41+ messages in thread
* Re: [PATCH 1/7] ia64: ACPI: move kernel acpi files to a directory
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 0:49 ` Al Stone
-1 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 0:49 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
On 01/22/2015 05:44 PM, al.stone@linaro.org wrote:
> From: Al Stone <ahs3@redhat.com>
> [snip....]
While I was assuming a couple more passes would be needed, I
didn't expect quite so soon. My apologies, I thought I had
corrected the From lines to say "Al Stone <al.stone@linaro.org>"
but I had not. That will be fixed for v2 in all the patches
that need it.
Sorry about that...
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Linaro Enterprise Group
al.stone@linaro.org
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* [PATCH 1/7] ia64: ACPI: move kernel acpi files to a directory
@ 2015-01-23 0:49 ` Al Stone
0 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 0:49 UTC (permalink / raw)
To: linux-arm-kernel
On 01/22/2015 05:44 PM, al.stone at linaro.org wrote:
> From: Al Stone <ahs3@redhat.com>
> [snip....]
While I was assuming a couple more passes would be needed, I
didn't expect quite so soon. My apologies, I thought I had
corrected the From lines to say "Al Stone <al.stone@linaro.org>"
but I had not. That will be fixed for v2 in all the patches
that need it.
Sorry about that...
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Linaro Enterprise Group
al.stone at linaro.org
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 1/7] ia64: ACPI: move kernel acpi files to a directory
@ 2015-01-23 0:49 ` Al Stone
0 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 0:49 UTC (permalink / raw)
To: tony.luck, fenghua.yu, rjw, catalin.marinas, will.deacon, tglx,
mingo, hpa, lenb, robert.moore
Cc: linux-ia64, linux-kernel, linux-acpi, linux-arm-kernel, devel,
linaro-acpi, linaro-kernel, patches
On 01/22/2015 05:44 PM, al.stone@linaro.org wrote:
> From: Al Stone <ahs3@redhat.com>
> [snip....]
While I was assuming a couple more passes would be needed, I
didn't expect quite so soon. My apologies, I thought I had
corrected the From lines to say "Al Stone <al.stone@linaro.org>"
but I had not. That will be fixed for v2 in all the patches
that need it.
Sorry about that...
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Linaro Enterprise Group
al.stone@linaro.org
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 0/7] Start deprecating _OSI on new architectures
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 15:43 ` Rafael J. Wysocki
-1 siblings, 0 replies; 41+ messages in thread
From: Rafael J. Wysocki @ 2015-01-23 15:43 UTC (permalink / raw)
To: al.stone
Cc: tony.luck, fenghua.yu, catalin.marinas, will.deacon, tglx, mingo,
hpa, lenb, robert.moore, linux-ia64, linux-kernel, linux-acpi,
linux-arm-kernel, devel, linaro-acpi, linaro-kernel, patches
Hi Al,
On Thursday, January 22, 2015 05:44:37 PM al.stone@linaro.org wrote:
> From: Al Stone <al.stone@linaro.org>
>
> The use of the ACPI _OSI method in Linux has a long and sordid history.
> Instead of perpetuating past complications on new architectures, the
> consensus amongst those writing the ACPI specification and those using
> it seems to be to ultimately deprecate the use of _OSI. I plan to
> propose such a change to the ACPI specification in the near future.
>
> In the meantime, these patches rearrange the implementation of _OSI so
> that it can be deprecated, or ultimately removed completely, on at least
> arm64 platforms. This is done by simply moving the functions implementing
> _OSI to arch-dependent locations. For x86, there should be no change
> in functionality. For ia64, while it does duplicate some code from x86,
> there is no longer any connection to the ACPI blacklist code that is only
> used by x86. For arm64, any use of the _OSI method generates a warning
> that it has been deprecated, and then always returns false; i.e., that
> the capability being queried for, whether OS name or functionality, is
> not supported. This is the first six of the patches.
While I seem to understand the motivation, I don't really like moving code
around, especially in the ia64 area where we have limited means to test the
changes. And I hate code duplication pretty much in any form.
Also I don't see anything wrong with sharing code between x86 and ia64 like
we do today.
So, why don't you move the _OSI handling out of osl.c into a separate file
that will only build if something like CONFIG_ARCH_SPECIFIC_ACPI_OSI is not
set (and same for blacklist.c). Then, you'll only need to make ARM64
set CONFIG_ARCH_SPECIFIC_ACPI_OSI and provide the necessary functions
and you can leave the other architectures alone.
Does that make sense to you?
> The final patch changes the default value for the _OS_ method for arm64
> only. Since there is no need to pretend to be older versions of Windows,
> or any other OS at all, the _OS_ method will return "Linux" on arm64.
> One can still use the acpi_os_name kernel parameter if there is a need
> to use some other value.
>
> Since we are breaking apart code previously shared, I have tried to make
> it so that applying the x86 patches alone will continue to compile, at
> the expense of breaking the build on non-x86 platforms. However, once
> all of the patches are applied, we should be able to compile on all three
> architectures. It is best to treat these as one whole.
>
> I have only done simple testing with these patches on arm64 and x86 (AMD
> Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
> as they should once booted, but this is a very, very small sample of
> possible machines. The ia64 patches cross-compile, but I personally have
> no way to test them.
>
> The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
> on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
> though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
>
> NB: some of the patches do not pass checkpatch.pl; the failures I saw were
> all part of the original code but are only showing up because that code is
> changing location, so I have left them as is. If necessary, they could be
> fixed but I was more concerned about the number of changes needed on ia64
> and not having any way to test them.
>
>
> [0] https://lkml.org/lkml/2015/1/14/586
>
>
> Al Stone (6):
> ia64: ACPI: move kernel acpi files to a directory
> arm64: ACPI: move kernel acpi files to a directory
> x86: ACPI: create arch-dependent version of acpi_osi_handler()
> ia64: ACPI: create arch-dependent version of acpi_osi_handler()
> arm64: ACPI: create arch-dependent version of acpi_osi_handler()
> x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
> locations
>
> Hanjun Guo (1):
> ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
>
> arch/arm64/Kconfig | 1 +
> arch/arm64/kernel/Makefile | 2 +-
> arch/arm64/kernel/acpi.c | 359 --------------
> arch/arm64/kernel/acpi/Makefile | 1 +
> arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
> arch/arm64/kernel/acpi/osi.c | 26 +
> arch/ia64/kernel/Makefile | 2 +-
> arch/ia64/kernel/acpi-ext.c | 104 ----
> arch/ia64/kernel/acpi.c | 1000 --------------------------------------
> arch/ia64/kernel/acpi/Makefile | 1 +
> arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
> arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
> arch/ia64/kernel/acpi/osi.c | 119 +++++
> arch/x86/kernel/acpi/Makefile | 2 +-
> arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
> arch/x86/kernel/acpi/boot.c | 5 +-
> arch/x86/kernel/acpi/osi.c | 255 ++++++++++
> drivers/acpi/Kconfig | 8 +
> drivers/acpi/Makefile | 1 -
> drivers/acpi/blacklist.c | 323 ------------
> drivers/acpi/osl.c | 217 ---------
> include/acpi/acconfig.h | 2 +
> include/acpi/platform/aclinux.h | 4 +
> include/linux/acpi.h | 4 +-
> 24 files changed, 2215 insertions(+), 2011 deletions(-)
> delete mode 100644 arch/arm64/kernel/acpi.c
> create mode 100644 arch/arm64/kernel/acpi/Makefile
> create mode 100644 arch/arm64/kernel/acpi/acpi.c
> create mode 100644 arch/arm64/kernel/acpi/osi.c
> delete mode 100644 arch/ia64/kernel/acpi-ext.c
> delete mode 100644 arch/ia64/kernel/acpi.c
> create mode 100644 arch/ia64/kernel/acpi/Makefile
> create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
> create mode 100644 arch/ia64/kernel/acpi/acpi.c
> create mode 100644 arch/ia64/kernel/acpi/osi.c
> create mode 100644 arch/x86/kernel/acpi/blacklist.c
> create mode 100644 arch/x86/kernel/acpi/osi.c
> delete mode 100644 drivers/acpi/blacklist.c
>
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 41+ messages in thread
* [PATCH 0/7] Start deprecating _OSI on new architectures
@ 2015-01-23 15:43 ` Rafael J. Wysocki
0 siblings, 0 replies; 41+ messages in thread
From: Rafael J. Wysocki @ 2015-01-23 15:43 UTC (permalink / raw)
To: linux-arm-kernel
Hi Al,
On Thursday, January 22, 2015 05:44:37 PM al.stone at linaro.org wrote:
> From: Al Stone <al.stone@linaro.org>
>
> The use of the ACPI _OSI method in Linux has a long and sordid history.
> Instead of perpetuating past complications on new architectures, the
> consensus amongst those writing the ACPI specification and those using
> it seems to be to ultimately deprecate the use of _OSI. I plan to
> propose such a change to the ACPI specification in the near future.
>
> In the meantime, these patches rearrange the implementation of _OSI so
> that it can be deprecated, or ultimately removed completely, on at least
> arm64 platforms. This is done by simply moving the functions implementing
> _OSI to arch-dependent locations. For x86, there should be no change
> in functionality. For ia64, while it does duplicate some code from x86,
> there is no longer any connection to the ACPI blacklist code that is only
> used by x86. For arm64, any use of the _OSI method generates a warning
> that it has been deprecated, and then always returns false; i.e., that
> the capability being queried for, whether OS name or functionality, is
> not supported. This is the first six of the patches.
While I seem to understand the motivation, I don't really like moving code
around, especially in the ia64 area where we have limited means to test the
changes. And I hate code duplication pretty much in any form.
Also I don't see anything wrong with sharing code between x86 and ia64 like
we do today.
So, why don't you move the _OSI handling out of osl.c into a separate file
that will only build if something like CONFIG_ARCH_SPECIFIC_ACPI_OSI is not
set (and same for blacklist.c). Then, you'll only need to make ARM64
set CONFIG_ARCH_SPECIFIC_ACPI_OSI and provide the necessary functions
and you can leave the other architectures alone.
Does that make sense to you?
> The final patch changes the default value for the _OS_ method for arm64
> only. Since there is no need to pretend to be older versions of Windows,
> or any other OS at all, the _OS_ method will return "Linux" on arm64.
> One can still use the acpi_os_name kernel parameter if there is a need
> to use some other value.
>
> Since we are breaking apart code previously shared, I have tried to make
> it so that applying the x86 patches alone will continue to compile, at
> the expense of breaking the build on non-x86 platforms. However, once
> all of the patches are applied, we should be able to compile on all three
> architectures. It is best to treat these as one whole.
>
> I have only done simple testing with these patches on arm64 and x86 (AMD
> Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
> as they should once booted, but this is a very, very small sample of
> possible machines. The ia64 patches cross-compile, but I personally have
> no way to test them.
>
> The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
> on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
> though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
>
> NB: some of the patches do not pass checkpatch.pl; the failures I saw were
> all part of the original code but are only showing up because that code is
> changing location, so I have left them as is. If necessary, they could be
> fixed but I was more concerned about the number of changes needed on ia64
> and not having any way to test them.
>
>
> [0] https://lkml.org/lkml/2015/1/14/586
>
>
> Al Stone (6):
> ia64: ACPI: move kernel acpi files to a directory
> arm64: ACPI: move kernel acpi files to a directory
> x86: ACPI: create arch-dependent version of acpi_osi_handler()
> ia64: ACPI: create arch-dependent version of acpi_osi_handler()
> arm64: ACPI: create arch-dependent version of acpi_osi_handler()
> x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
> locations
>
> Hanjun Guo (1):
> ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
>
> arch/arm64/Kconfig | 1 +
> arch/arm64/kernel/Makefile | 2 +-
> arch/arm64/kernel/acpi.c | 359 --------------
> arch/arm64/kernel/acpi/Makefile | 1 +
> arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
> arch/arm64/kernel/acpi/osi.c | 26 +
> arch/ia64/kernel/Makefile | 2 +-
> arch/ia64/kernel/acpi-ext.c | 104 ----
> arch/ia64/kernel/acpi.c | 1000 --------------------------------------
> arch/ia64/kernel/acpi/Makefile | 1 +
> arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
> arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
> arch/ia64/kernel/acpi/osi.c | 119 +++++
> arch/x86/kernel/acpi/Makefile | 2 +-
> arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
> arch/x86/kernel/acpi/boot.c | 5 +-
> arch/x86/kernel/acpi/osi.c | 255 ++++++++++
> drivers/acpi/Kconfig | 8 +
> drivers/acpi/Makefile | 1 -
> drivers/acpi/blacklist.c | 323 ------------
> drivers/acpi/osl.c | 217 ---------
> include/acpi/acconfig.h | 2 +
> include/acpi/platform/aclinux.h | 4 +
> include/linux/acpi.h | 4 +-
> 24 files changed, 2215 insertions(+), 2011 deletions(-)
> delete mode 100644 arch/arm64/kernel/acpi.c
> create mode 100644 arch/arm64/kernel/acpi/Makefile
> create mode 100644 arch/arm64/kernel/acpi/acpi.c
> create mode 100644 arch/arm64/kernel/acpi/osi.c
> delete mode 100644 arch/ia64/kernel/acpi-ext.c
> delete mode 100644 arch/ia64/kernel/acpi.c
> create mode 100644 arch/ia64/kernel/acpi/Makefile
> create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
> create mode 100644 arch/ia64/kernel/acpi/acpi.c
> create mode 100644 arch/ia64/kernel/acpi/osi.c
> create mode 100644 arch/x86/kernel/acpi/blacklist.c
> create mode 100644 arch/x86/kernel/acpi/osi.c
> delete mode 100644 drivers/acpi/blacklist.c
>
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 0/7] Start deprecating _OSI on new architectures
@ 2015-01-23 15:43 ` Rafael J. Wysocki
0 siblings, 0 replies; 41+ messages in thread
From: Rafael J. Wysocki @ 2015-01-23 15:43 UTC (permalink / raw)
To: al.stone
Cc: tony.luck, fenghua.yu, catalin.marinas, will.deacon, tglx, mingo,
hpa, lenb, robert.moore, linux-ia64, linux-kernel, linux-acpi,
linux-arm-kernel, devel, linaro-acpi, linaro-kernel, patches
Hi Al,
On Thursday, January 22, 2015 05:44:37 PM al.stone@linaro.org wrote:
> From: Al Stone <al.stone@linaro.org>
>
> The use of the ACPI _OSI method in Linux has a long and sordid history.
> Instead of perpetuating past complications on new architectures, the
> consensus amongst those writing the ACPI specification and those using
> it seems to be to ultimately deprecate the use of _OSI. I plan to
> propose such a change to the ACPI specification in the near future.
>
> In the meantime, these patches rearrange the implementation of _OSI so
> that it can be deprecated, or ultimately removed completely, on at least
> arm64 platforms. This is done by simply moving the functions implementing
> _OSI to arch-dependent locations. For x86, there should be no change
> in functionality. For ia64, while it does duplicate some code from x86,
> there is no longer any connection to the ACPI blacklist code that is only
> used by x86. For arm64, any use of the _OSI method generates a warning
> that it has been deprecated, and then always returns false; i.e., that
> the capability being queried for, whether OS name or functionality, is
> not supported. This is the first six of the patches.
While I seem to understand the motivation, I don't really like moving code
around, especially in the ia64 area where we have limited means to test the
changes. And I hate code duplication pretty much in any form.
Also I don't see anything wrong with sharing code between x86 and ia64 like
we do today.
So, why don't you move the _OSI handling out of osl.c into a separate file
that will only build if something like CONFIG_ARCH_SPECIFIC_ACPI_OSI is not
set (and same for blacklist.c). Then, you'll only need to make ARM64
set CONFIG_ARCH_SPECIFIC_ACPI_OSI and provide the necessary functions
and you can leave the other architectures alone.
Does that make sense to you?
> The final patch changes the default value for the _OS_ method for arm64
> only. Since there is no need to pretend to be older versions of Windows,
> or any other OS at all, the _OS_ method will return "Linux" on arm64.
> One can still use the acpi_os_name kernel parameter if there is a need
> to use some other value.
>
> Since we are breaking apart code previously shared, I have tried to make
> it so that applying the x86 patches alone will continue to compile, at
> the expense of breaking the build on non-x86 platforms. However, once
> all of the patches are applied, we should be able to compile on all three
> architectures. It is best to treat these as one whole.
>
> I have only done simple testing with these patches on arm64 and x86 (AMD
> Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
> as they should once booted, but this is a very, very small sample of
> possible machines. The ia64 patches cross-compile, but I personally have
> no way to test them.
>
> The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
> on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
> though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
>
> NB: some of the patches do not pass checkpatch.pl; the failures I saw were
> all part of the original code but are only showing up because that code is
> changing location, so I have left them as is. If necessary, they could be
> fixed but I was more concerned about the number of changes needed on ia64
> and not having any way to test them.
>
>
> [0] https://lkml.org/lkml/2015/1/14/586
>
>
> Al Stone (6):
> ia64: ACPI: move kernel acpi files to a directory
> arm64: ACPI: move kernel acpi files to a directory
> x86: ACPI: create arch-dependent version of acpi_osi_handler()
> ia64: ACPI: create arch-dependent version of acpi_osi_handler()
> arm64: ACPI: create arch-dependent version of acpi_osi_handler()
> x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
> locations
>
> Hanjun Guo (1):
> ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
>
> arch/arm64/Kconfig | 1 +
> arch/arm64/kernel/Makefile | 2 +-
> arch/arm64/kernel/acpi.c | 359 --------------
> arch/arm64/kernel/acpi/Makefile | 1 +
> arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
> arch/arm64/kernel/acpi/osi.c | 26 +
> arch/ia64/kernel/Makefile | 2 +-
> arch/ia64/kernel/acpi-ext.c | 104 ----
> arch/ia64/kernel/acpi.c | 1000 --------------------------------------
> arch/ia64/kernel/acpi/Makefile | 1 +
> arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
> arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
> arch/ia64/kernel/acpi/osi.c | 119 +++++
> arch/x86/kernel/acpi/Makefile | 2 +-
> arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
> arch/x86/kernel/acpi/boot.c | 5 +-
> arch/x86/kernel/acpi/osi.c | 255 ++++++++++
> drivers/acpi/Kconfig | 8 +
> drivers/acpi/Makefile | 1 -
> drivers/acpi/blacklist.c | 323 ------------
> drivers/acpi/osl.c | 217 ---------
> include/acpi/acconfig.h | 2 +
> include/acpi/platform/aclinux.h | 4 +
> include/linux/acpi.h | 4 +-
> 24 files changed, 2215 insertions(+), 2011 deletions(-)
> delete mode 100644 arch/arm64/kernel/acpi.c
> create mode 100644 arch/arm64/kernel/acpi/Makefile
> create mode 100644 arch/arm64/kernel/acpi/acpi.c
> create mode 100644 arch/arm64/kernel/acpi/osi.c
> delete mode 100644 arch/ia64/kernel/acpi-ext.c
> delete mode 100644 arch/ia64/kernel/acpi.c
> create mode 100644 arch/ia64/kernel/acpi/Makefile
> create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
> create mode 100644 arch/ia64/kernel/acpi/acpi.c
> create mode 100644 arch/ia64/kernel/acpi/osi.c
> create mode 100644 arch/x86/kernel/acpi/blacklist.c
> create mode 100644 arch/x86/kernel/acpi/osi.c
> delete mode 100644 drivers/acpi/blacklist.c
>
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
2015-01-23 0:44 ` al.stone at linaro.org
(?)
@ 2015-01-23 15:55 ` Rafael J. Wysocki
-1 siblings, 0 replies; 41+ messages in thread
From: Rafael J. Wysocki @ 2015-01-23 15:55 UTC (permalink / raw)
To: al.stone
Cc: tony.luck, fenghua.yu, catalin.marinas, will.deacon, tglx, mingo,
hpa, lenb, robert.moore, linux-ia64, linux-kernel, linux-acpi,
linux-arm-kernel, devel, linaro-acpi, linaro-kernel, patches
On Thursday, January 22, 2015 05:44:44 PM al.stone@linaro.org wrote:
> From: Hanjun Guo <hanjun.guo@linaro.org>
>
> ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
> That doesn't make much sense in the ARM context, so set it to "Linux"
> when CONFIG_ARM64.
>
> If it is necessary to change the return value from \_OS_ (that is, return
> some value other than the default in ACPI_OS_NAME), use the kernel parameter
> "acpi_os_name=<string>".
>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
> ---
> arch/arm64/Kconfig | 1 +
> drivers/acpi/Kconfig | 8 ++++++++
> include/acpi/acconfig.h | 2 ++
> include/acpi/platform/aclinux.h | 4 ++++
> 4 files changed, 15 insertions(+)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 915aa16..20677d1 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -1,5 +1,6 @@
If you added
config ACPI_OS_NAME
string
default "Linux"
depends on ACPI
to this file, then you don't need to add the new select below and ->
> config ARM64
> def_bool y
> + select ACPI_OS_NAME_LINUX if ACPI
> select ACPI_REDUCED_HARDWARE_ONLY if ACPI
> select ARCH_BINFMT_ELF_RANDOMIZE_PIE
> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> index 3e3bd35..024c5f0 100644
> --- a/drivers/acpi/Kconfig
> +++ b/drivers/acpi/Kconfig
> @@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
>
> If you are unsure what to do, do not enable this option.
>
> +config ACPI_OS_NAME_LINUX
> + bool "Using Linux for _OS method" if EXPERT
> + def_bool n
> + When used, this option makes sure the _OS method returns
> + the value "Linux".
> +
> + If you are unsure what to do, do not enable this option.
> +
-> you don't need this at all ->>
> source "drivers/acpi/apei/Kconfig"
>
> config ACPI_EXTLOG
> diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
> index 5a0a3e5..1980bf4 100644
> --- a/include/acpi/acconfig.h
> +++ b/include/acpi/acconfig.h
> @@ -69,7 +69,9 @@
> * code that will not execute the _OSI method unless _OS matches the string
> * below. Therefore, change this string at your own risk.
> */
> +#ifndef ACPI_OS_NAME
> #define ACPI_OS_NAME "Microsoft Windows NT"
> +#endif
>
> /* Maximum objects in the various object caches */
>
> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
> index 1ba7c19..a8a7ee3 100644
> --- a/include/acpi/platform/aclinux.h
> +++ b/include/acpi/platform/aclinux.h
> @@ -69,6 +69,10 @@
> #define ACPI_REDUCED_HARDWARE 1
> #endif
>
> +#ifdef CONFIG_ACPI_OS_NAME_LINUX
> +#define ACPI_OS_NAME "Linux"
> +#endif
->> and here you can do
+#ifdef CONFIG_ACPI_OS_NAME
+#define ACPI_OS_NAME CONFIG_ACPI_OS_NAME
+#endif
unless I'm missing something.
> +
> #include <linux/string.h>
> #include <linux/kernel.h>
> #include <linux/ctype.h>
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 41+ messages in thread
* [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
@ 2015-01-23 15:55 ` Rafael J. Wysocki
0 siblings, 0 replies; 41+ messages in thread
From: Rafael J. Wysocki @ 2015-01-23 15:55 UTC (permalink / raw)
To: linux-arm-kernel
On Thursday, January 22, 2015 05:44:44 PM al.stone at linaro.org wrote:
> From: Hanjun Guo <hanjun.guo@linaro.org>
>
> ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
> That doesn't make much sense in the ARM context, so set it to "Linux"
> when CONFIG_ARM64.
>
> If it is necessary to change the return value from \_OS_ (that is, return
> some value other than the default in ACPI_OS_NAME), use the kernel parameter
> "acpi_os_name=<string>".
>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
> ---
> arch/arm64/Kconfig | 1 +
> drivers/acpi/Kconfig | 8 ++++++++
> include/acpi/acconfig.h | 2 ++
> include/acpi/platform/aclinux.h | 4 ++++
> 4 files changed, 15 insertions(+)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 915aa16..20677d1 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -1,5 +1,6 @@
If you added
config ACPI_OS_NAME
string
default "Linux"
depends on ACPI
to this file, then you don't need to add the new select below and ->
> config ARM64
> def_bool y
> + select ACPI_OS_NAME_LINUX if ACPI
> select ACPI_REDUCED_HARDWARE_ONLY if ACPI
> select ARCH_BINFMT_ELF_RANDOMIZE_PIE
> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> index 3e3bd35..024c5f0 100644
> --- a/drivers/acpi/Kconfig
> +++ b/drivers/acpi/Kconfig
> @@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
>
> If you are unsure what to do, do not enable this option.
>
> +config ACPI_OS_NAME_LINUX
> + bool "Using Linux for _OS method" if EXPERT
> + def_bool n
> + When used, this option makes sure the _OS method returns
> + the value "Linux".
> +
> + If you are unsure what to do, do not enable this option.
> +
-> you don't need this at all ->>
> source "drivers/acpi/apei/Kconfig"
>
> config ACPI_EXTLOG
> diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
> index 5a0a3e5..1980bf4 100644
> --- a/include/acpi/acconfig.h
> +++ b/include/acpi/acconfig.h
> @@ -69,7 +69,9 @@
> * code that will not execute the _OSI method unless _OS matches the string
> * below. Therefore, change this string at your own risk.
> */
> +#ifndef ACPI_OS_NAME
> #define ACPI_OS_NAME "Microsoft Windows NT"
> +#endif
>
> /* Maximum objects in the various object caches */
>
> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
> index 1ba7c19..a8a7ee3 100644
> --- a/include/acpi/platform/aclinux.h
> +++ b/include/acpi/platform/aclinux.h
> @@ -69,6 +69,10 @@
> #define ACPI_REDUCED_HARDWARE 1
> #endif
>
> +#ifdef CONFIG_ACPI_OS_NAME_LINUX
> +#define ACPI_OS_NAME "Linux"
> +#endif
->> and here you can do
+#ifdef CONFIG_ACPI_OS_NAME
+#define ACPI_OS_NAME CONFIG_ACPI_OS_NAME
+#endif
unless I'm missing something.
> +
> #include <linux/string.h>
> #include <linux/kernel.h>
> #include <linux/ctype.h>
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
@ 2015-01-23 15:55 ` Rafael J. Wysocki
0 siblings, 0 replies; 41+ messages in thread
From: Rafael J. Wysocki @ 2015-01-23 15:55 UTC (permalink / raw)
To: al.stone
Cc: tony.luck, fenghua.yu, catalin.marinas, will.deacon, tglx, mingo,
hpa, lenb, robert.moore, linux-ia64, linux-kernel, linux-acpi,
linux-arm-kernel, devel, linaro-acpi, linaro-kernel, patches
On Thursday, January 22, 2015 05:44:44 PM al.stone@linaro.org wrote:
> From: Hanjun Guo <hanjun.guo@linaro.org>
>
> ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
> That doesn't make much sense in the ARM context, so set it to "Linux"
> when CONFIG_ARM64.
>
> If it is necessary to change the return value from \_OS_ (that is, return
> some value other than the default in ACPI_OS_NAME), use the kernel parameter
> "acpi_os_name=<string>".
>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
> ---
> arch/arm64/Kconfig | 1 +
> drivers/acpi/Kconfig | 8 ++++++++
> include/acpi/acconfig.h | 2 ++
> include/acpi/platform/aclinux.h | 4 ++++
> 4 files changed, 15 insertions(+)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 915aa16..20677d1 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -1,5 +1,6 @@
If you added
config ACPI_OS_NAME
string
default "Linux"
depends on ACPI
to this file, then you don't need to add the new select below and ->
> config ARM64
> def_bool y
> + select ACPI_OS_NAME_LINUX if ACPI
> select ACPI_REDUCED_HARDWARE_ONLY if ACPI
> select ARCH_BINFMT_ELF_RANDOMIZE_PIE
> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> index 3e3bd35..024c5f0 100644
> --- a/drivers/acpi/Kconfig
> +++ b/drivers/acpi/Kconfig
> @@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
>
> If you are unsure what to do, do not enable this option.
>
> +config ACPI_OS_NAME_LINUX
> + bool "Using Linux for _OS method" if EXPERT
> + def_bool n
> + When used, this option makes sure the _OS method returns
> + the value "Linux".
> +
> + If you are unsure what to do, do not enable this option.
> +
-> you don't need this at all ->>
> source "drivers/acpi/apei/Kconfig"
>
> config ACPI_EXTLOG
> diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
> index 5a0a3e5..1980bf4 100644
> --- a/include/acpi/acconfig.h
> +++ b/include/acpi/acconfig.h
> @@ -69,7 +69,9 @@
> * code that will not execute the _OSI method unless _OS matches the string
> * below. Therefore, change this string at your own risk.
> */
> +#ifndef ACPI_OS_NAME
> #define ACPI_OS_NAME "Microsoft Windows NT"
> +#endif
>
> /* Maximum objects in the various object caches */
>
> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
> index 1ba7c19..a8a7ee3 100644
> --- a/include/acpi/platform/aclinux.h
> +++ b/include/acpi/platform/aclinux.h
> @@ -69,6 +69,10 @@
> #define ACPI_REDUCED_HARDWARE 1
> #endif
>
> +#ifdef CONFIG_ACPI_OS_NAME_LINUX
> +#define ACPI_OS_NAME "Linux"
> +#endif
->> and here you can do
+#ifdef CONFIG_ACPI_OS_NAME
+#define ACPI_OS_NAME CONFIG_ACPI_OS_NAME
+#endif
unless I'm missing something.
> +
> #include <linux/string.h>
> #include <linux/kernel.h>
> #include <linux/ctype.h>
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 0/7] Start deprecating _OSI on new architectures
2015-01-23 15:43 ` Rafael J. Wysocki
(?)
(?)
@ 2015-01-23 16:32 ` Al Stone
-1 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 16:32 UTC (permalink / raw)
To: Rafael J. Wysocki, al.stone
Cc: tony.luck, fenghua.yu, catalin.marinas, will.deacon, tglx, mingo,
hpa, lenb, robert.moore, linux-ia64, linux-kernel, linux-acpi,
linux-arm-kernel, devel, linaro-acpi, linaro-kernel, patches
On 01/23/2015 08:43 AM, Rafael J. Wysocki wrote:
> Hi Al,
>
> On Thursday, January 22, 2015 05:44:37 PM al.stone@linaro.org wrote:
>> From: Al Stone <al.stone@linaro.org>
>>
>> The use of the ACPI _OSI method in Linux has a long and sordid history.
>> Instead of perpetuating past complications on new architectures, the
>> consensus amongst those writing the ACPI specification and those using
>> it seems to be to ultimately deprecate the use of _OSI. I plan to
>> propose such a change to the ACPI specification in the near future.
>>
>> In the meantime, these patches rearrange the implementation of _OSI so
>> that it can be deprecated, or ultimately removed completely, on at least
>> arm64 platforms. This is done by simply moving the functions implementing
>> _OSI to arch-dependent locations. For x86, there should be no change
>> in functionality. For ia64, while it does duplicate some code from x86,
>> there is no longer any connection to the ACPI blacklist code that is only
>> used by x86. For arm64, any use of the _OSI method generates a warning
>> that it has been deprecated, and then always returns false; i.e., that
>> the capability being queried for, whether OS name or functionality, is
>> not supported. This is the first six of the patches.
>
> While I seem to understand the motivation, I don't really like moving code
> around, especially in the ia64 area where we have limited means to test the
> changes. And I hate code duplication pretty much in any form.
I'm not too wild about it either, but it seemed to avoid #ifdefs when I
was trying to think it through.
> Also I don't see anything wrong with sharing code between x86 and ia64 like
> we do today.
Fair enough. That's entirely up to you; the only reason I saw for
separating them was removing the one call to check the blacklist on
ia64. That would have a tiny time savings at boot time, but it is
definitely down in the noise level.
> So, why don't you move the _OSI handling out of osl.c into a separate file
> that will only build if something like CONFIG_ARCH_SPECIFIC_ACPI_OSI is not
> set (and same for blacklist.c). Then, you'll only need to make ARM64
> set CONFIG_ARCH_SPECIFIC_ACPI_OSI and provide the necessary functions
> and you can leave the other architectures alone.
>
> Does that make sense to you?
It does. I'll rewrite these based on that approach. Definitely a lot
less code motion involved...
>> The final patch changes the default value for the _OS_ method for arm64
>> only. Since there is no need to pretend to be older versions of Windows,
>> or any other OS at all, the _OS_ method will return "Linux" on arm64.
>> One can still use the acpi_os_name kernel parameter if there is a need
>> to use some other value.
>>
>> Since we are breaking apart code previously shared, I have tried to make
>> it so that applying the x86 patches alone will continue to compile, at
>> the expense of breaking the build on non-x86 platforms. However, once
>> all of the patches are applied, we should be able to compile on all three
>> architectures. It is best to treat these as one whole.
>>
>> I have only done simple testing with these patches on arm64 and x86 (AMD
>> Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
>> as they should once booted, but this is a very, very small sample of
>> possible machines. The ia64 patches cross-compile, but I personally have
>> no way to test them.
>>
>> The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
>> on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
>> though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
>>
>> NB: some of the patches do not pass checkpatch.pl; the failures I saw were
>> all part of the original code but are only showing up because that code is
>> changing location, so I have left them as is. If necessary, they could be
>> fixed but I was more concerned about the number of changes needed on ia64
>> and not having any way to test them.
>>
>>
>> [0] https://lkml.org/lkml/2015/1/14/586
>>
>>
>> Al Stone (6):
>> ia64: ACPI: move kernel acpi files to a directory
>> arm64: ACPI: move kernel acpi files to a directory
>> x86: ACPI: create arch-dependent version of acpi_osi_handler()
>> ia64: ACPI: create arch-dependent version of acpi_osi_handler()
>> arm64: ACPI: create arch-dependent version of acpi_osi_handler()
>> x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
>> locations
>>
>> Hanjun Guo (1):
>> ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
>>
>> arch/arm64/Kconfig | 1 +
>> arch/arm64/kernel/Makefile | 2 +-
>> arch/arm64/kernel/acpi.c | 359 --------------
>> arch/arm64/kernel/acpi/Makefile | 1 +
>> arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
>> arch/arm64/kernel/acpi/osi.c | 26 +
>> arch/ia64/kernel/Makefile | 2 +-
>> arch/ia64/kernel/acpi-ext.c | 104 ----
>> arch/ia64/kernel/acpi.c | 1000 --------------------------------------
>> arch/ia64/kernel/acpi/Makefile | 1 +
>> arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
>> arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
>> arch/ia64/kernel/acpi/osi.c | 119 +++++
>> arch/x86/kernel/acpi/Makefile | 2 +-
>> arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
>> arch/x86/kernel/acpi/boot.c | 5 +-
>> arch/x86/kernel/acpi/osi.c | 255 ++++++++++
>> drivers/acpi/Kconfig | 8 +
>> drivers/acpi/Makefile | 1 -
>> drivers/acpi/blacklist.c | 323 ------------
>> drivers/acpi/osl.c | 217 ---------
>> include/acpi/acconfig.h | 2 +
>> include/acpi/platform/aclinux.h | 4 +
>> include/linux/acpi.h | 4 +-
>> 24 files changed, 2215 insertions(+), 2011 deletions(-)
>> delete mode 100644 arch/arm64/kernel/acpi.c
>> create mode 100644 arch/arm64/kernel/acpi/Makefile
>> create mode 100644 arch/arm64/kernel/acpi/acpi.c
>> create mode 100644 arch/arm64/kernel/acpi/osi.c
>> delete mode 100644 arch/ia64/kernel/acpi-ext.c
>> delete mode 100644 arch/ia64/kernel/acpi.c
>> create mode 100644 arch/ia64/kernel/acpi/Makefile
>> create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
>> create mode 100644 arch/ia64/kernel/acpi/acpi.c
>> create mode 100644 arch/ia64/kernel/acpi/osi.c
>> create mode 100644 arch/x86/kernel/acpi/blacklist.c
>> create mode 100644 arch/x86/kernel/acpi/osi.c
>> delete mode 100644 drivers/acpi/blacklist.c
>>
>>
>
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3@redhat.com
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* [PATCH 0/7] Start deprecating _OSI on new architectures
@ 2015-01-23 16:32 ` Al Stone
0 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 16:32 UTC (permalink / raw)
To: linux-arm-kernel
On 01/23/2015 08:43 AM, Rafael J. Wysocki wrote:
> Hi Al,
>
> On Thursday, January 22, 2015 05:44:37 PM al.stone at linaro.org wrote:
>> From: Al Stone <al.stone@linaro.org>
>>
>> The use of the ACPI _OSI method in Linux has a long and sordid history.
>> Instead of perpetuating past complications on new architectures, the
>> consensus amongst those writing the ACPI specification and those using
>> it seems to be to ultimately deprecate the use of _OSI. I plan to
>> propose such a change to the ACPI specification in the near future.
>>
>> In the meantime, these patches rearrange the implementation of _OSI so
>> that it can be deprecated, or ultimately removed completely, on at least
>> arm64 platforms. This is done by simply moving the functions implementing
>> _OSI to arch-dependent locations. For x86, there should be no change
>> in functionality. For ia64, while it does duplicate some code from x86,
>> there is no longer any connection to the ACPI blacklist code that is only
>> used by x86. For arm64, any use of the _OSI method generates a warning
>> that it has been deprecated, and then always returns false; i.e., that
>> the capability being queried for, whether OS name or functionality, is
>> not supported. This is the first six of the patches.
>
> While I seem to understand the motivation, I don't really like moving code
> around, especially in the ia64 area where we have limited means to test the
> changes. And I hate code duplication pretty much in any form.
I'm not too wild about it either, but it seemed to avoid #ifdefs when I
was trying to think it through.
> Also I don't see anything wrong with sharing code between x86 and ia64 like
> we do today.
Fair enough. That's entirely up to you; the only reason I saw for
separating them was removing the one call to check the blacklist on
ia64. That would have a tiny time savings at boot time, but it is
definitely down in the noise level.
> So, why don't you move the _OSI handling out of osl.c into a separate file
> that will only build if something like CONFIG_ARCH_SPECIFIC_ACPI_OSI is not
> set (and same for blacklist.c). Then, you'll only need to make ARM64
> set CONFIG_ARCH_SPECIFIC_ACPI_OSI and provide the necessary functions
> and you can leave the other architectures alone.
>
> Does that make sense to you?
It does. I'll rewrite these based on that approach. Definitely a lot
less code motion involved...
>> The final patch changes the default value for the _OS_ method for arm64
>> only. Since there is no need to pretend to be older versions of Windows,
>> or any other OS at all, the _OS_ method will return "Linux" on arm64.
>> One can still use the acpi_os_name kernel parameter if there is a need
>> to use some other value.
>>
>> Since we are breaking apart code previously shared, I have tried to make
>> it so that applying the x86 patches alone will continue to compile, at
>> the expense of breaking the build on non-x86 platforms. However, once
>> all of the patches are applied, we should be able to compile on all three
>> architectures. It is best to treat these as one whole.
>>
>> I have only done simple testing with these patches on arm64 and x86 (AMD
>> Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
>> as they should once booted, but this is a very, very small sample of
>> possible machines. The ia64 patches cross-compile, but I personally have
>> no way to test them.
>>
>> The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
>> on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
>> though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
>>
>> NB: some of the patches do not pass checkpatch.pl; the failures I saw were
>> all part of the original code but are only showing up because that code is
>> changing location, so I have left them as is. If necessary, they could be
>> fixed but I was more concerned about the number of changes needed on ia64
>> and not having any way to test them.
>>
>>
>> [0] https://lkml.org/lkml/2015/1/14/586
>>
>>
>> Al Stone (6):
>> ia64: ACPI: move kernel acpi files to a directory
>> arm64: ACPI: move kernel acpi files to a directory
>> x86: ACPI: create arch-dependent version of acpi_osi_handler()
>> ia64: ACPI: create arch-dependent version of acpi_osi_handler()
>> arm64: ACPI: create arch-dependent version of acpi_osi_handler()
>> x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
>> locations
>>
>> Hanjun Guo (1):
>> ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
>>
>> arch/arm64/Kconfig | 1 +
>> arch/arm64/kernel/Makefile | 2 +-
>> arch/arm64/kernel/acpi.c | 359 --------------
>> arch/arm64/kernel/acpi/Makefile | 1 +
>> arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
>> arch/arm64/kernel/acpi/osi.c | 26 +
>> arch/ia64/kernel/Makefile | 2 +-
>> arch/ia64/kernel/acpi-ext.c | 104 ----
>> arch/ia64/kernel/acpi.c | 1000 --------------------------------------
>> arch/ia64/kernel/acpi/Makefile | 1 +
>> arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
>> arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
>> arch/ia64/kernel/acpi/osi.c | 119 +++++
>> arch/x86/kernel/acpi/Makefile | 2 +-
>> arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
>> arch/x86/kernel/acpi/boot.c | 5 +-
>> arch/x86/kernel/acpi/osi.c | 255 ++++++++++
>> drivers/acpi/Kconfig | 8 +
>> drivers/acpi/Makefile | 1 -
>> drivers/acpi/blacklist.c | 323 ------------
>> drivers/acpi/osl.c | 217 ---------
>> include/acpi/acconfig.h | 2 +
>> include/acpi/platform/aclinux.h | 4 +
>> include/linux/acpi.h | 4 +-
>> 24 files changed, 2215 insertions(+), 2011 deletions(-)
>> delete mode 100644 arch/arm64/kernel/acpi.c
>> create mode 100644 arch/arm64/kernel/acpi/Makefile
>> create mode 100644 arch/arm64/kernel/acpi/acpi.c
>> create mode 100644 arch/arm64/kernel/acpi/osi.c
>> delete mode 100644 arch/ia64/kernel/acpi-ext.c
>> delete mode 100644 arch/ia64/kernel/acpi.c
>> create mode 100644 arch/ia64/kernel/acpi/Makefile
>> create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
>> create mode 100644 arch/ia64/kernel/acpi/acpi.c
>> create mode 100644 arch/ia64/kernel/acpi/osi.c
>> create mode 100644 arch/x86/kernel/acpi/blacklist.c
>> create mode 100644 arch/x86/kernel/acpi/osi.c
>> delete mode 100644 drivers/acpi/blacklist.c
>>
>>
>
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3 at redhat.com
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 0/7] Start deprecating _OSI on new architectures
@ 2015-01-23 16:32 ` Al Stone
0 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 16:32 UTC (permalink / raw)
To: Rafael J. Wysocki, al.stone
Cc: tony.luck, fenghua.yu, catalin.marinas, will.deacon, tglx, mingo,
hpa, lenb, robert.moore, linux-ia64, linux-kernel, linux-acpi,
linux-arm-kernel, devel, linaro-acpi, linaro-kernel, patches
On 01/23/2015 08:43 AM, Rafael J. Wysocki wrote:
> Hi Al,
>
> On Thursday, January 22, 2015 05:44:37 PM al.stone@linaro.org wrote:
>> From: Al Stone <al.stone@linaro.org>
>>
>> The use of the ACPI _OSI method in Linux has a long and sordid history.
>> Instead of perpetuating past complications on new architectures, the
>> consensus amongst those writing the ACPI specification and those using
>> it seems to be to ultimately deprecate the use of _OSI. I plan to
>> propose such a change to the ACPI specification in the near future.
>>
>> In the meantime, these patches rearrange the implementation of _OSI so
>> that it can be deprecated, or ultimately removed completely, on at least
>> arm64 platforms. This is done by simply moving the functions implementing
>> _OSI to arch-dependent locations. For x86, there should be no change
>> in functionality. For ia64, while it does duplicate some code from x86,
>> there is no longer any connection to the ACPI blacklist code that is only
>> used by x86. For arm64, any use of the _OSI method generates a warning
>> that it has been deprecated, and then always returns false; i.e., that
>> the capability being queried for, whether OS name or functionality, is
>> not supported. This is the first six of the patches.
>
> While I seem to understand the motivation, I don't really like moving code
> around, especially in the ia64 area where we have limited means to test the
> changes. And I hate code duplication pretty much in any form.
I'm not too wild about it either, but it seemed to avoid #ifdefs when I
was trying to think it through.
> Also I don't see anything wrong with sharing code between x86 and ia64 like
> we do today.
Fair enough. That's entirely up to you; the only reason I saw for
separating them was removing the one call to check the blacklist on
ia64. That would have a tiny time savings at boot time, but it is
definitely down in the noise level.
> So, why don't you move the _OSI handling out of osl.c into a separate file
> that will only build if something like CONFIG_ARCH_SPECIFIC_ACPI_OSI is not
> set (and same for blacklist.c). Then, you'll only need to make ARM64
> set CONFIG_ARCH_SPECIFIC_ACPI_OSI and provide the necessary functions
> and you can leave the other architectures alone.
>
> Does that make sense to you?
It does. I'll rewrite these based on that approach. Definitely a lot
less code motion involved...
>> The final patch changes the default value for the _OS_ method for arm64
>> only. Since there is no need to pretend to be older versions of Windows,
>> or any other OS at all, the _OS_ method will return "Linux" on arm64.
>> One can still use the acpi_os_name kernel parameter if there is a need
>> to use some other value.
>>
>> Since we are breaking apart code previously shared, I have tried to make
>> it so that applying the x86 patches alone will continue to compile, at
>> the expense of breaking the build on non-x86 platforms. However, once
>> all of the patches are applied, we should be able to compile on all three
>> architectures. It is best to treat these as one whole.
>>
>> I have only done simple testing with these patches on arm64 and x86 (AMD
>> Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
>> as they should once booted, but this is a very, very small sample of
>> possible machines. The ia64 patches cross-compile, but I personally have
>> no way to test them.
>>
>> The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
>> on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
>> though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
>>
>> NB: some of the patches do not pass checkpatch.pl; the failures I saw were
>> all part of the original code but are only showing up because that code is
>> changing location, so I have left them as is. If necessary, they could be
>> fixed but I was more concerned about the number of changes needed on ia64
>> and not having any way to test them.
>>
>>
>> [0] https://lkml.org/lkml/2015/1/14/586
>>
>>
>> Al Stone (6):
>> ia64: ACPI: move kernel acpi files to a directory
>> arm64: ACPI: move kernel acpi files to a directory
>> x86: ACPI: create arch-dependent version of acpi_osi_handler()
>> ia64: ACPI: create arch-dependent version of acpi_osi_handler()
>> arm64: ACPI: create arch-dependent version of acpi_osi_handler()
>> x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
>> locations
>>
>> Hanjun Guo (1):
>> ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
>>
>> arch/arm64/Kconfig | 1 +
>> arch/arm64/kernel/Makefile | 2 +-
>> arch/arm64/kernel/acpi.c | 359 --------------
>> arch/arm64/kernel/acpi/Makefile | 1 +
>> arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
>> arch/arm64/kernel/acpi/osi.c | 26 +
>> arch/ia64/kernel/Makefile | 2 +-
>> arch/ia64/kernel/acpi-ext.c | 104 ----
>> arch/ia64/kernel/acpi.c | 1000 --------------------------------------
>> arch/ia64/kernel/acpi/Makefile | 1 +
>> arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
>> arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
>> arch/ia64/kernel/acpi/osi.c | 119 +++++
>> arch/x86/kernel/acpi/Makefile | 2 +-
>> arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
>> arch/x86/kernel/acpi/boot.c | 5 +-
>> arch/x86/kernel/acpi/osi.c | 255 ++++++++++
>> drivers/acpi/Kconfig | 8 +
>> drivers/acpi/Makefile | 1 -
>> drivers/acpi/blacklist.c | 323 ------------
>> drivers/acpi/osl.c | 217 ---------
>> include/acpi/acconfig.h | 2 +
>> include/acpi/platform/aclinux.h | 4 +
>> include/linux/acpi.h | 4 +-
>> 24 files changed, 2215 insertions(+), 2011 deletions(-)
>> delete mode 100644 arch/arm64/kernel/acpi.c
>> create mode 100644 arch/arm64/kernel/acpi/Makefile
>> create mode 100644 arch/arm64/kernel/acpi/acpi.c
>> create mode 100644 arch/arm64/kernel/acpi/osi.c
>> delete mode 100644 arch/ia64/kernel/acpi-ext.c
>> delete mode 100644 arch/ia64/kernel/acpi.c
>> create mode 100644 arch/ia64/kernel/acpi/Makefile
>> create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
>> create mode 100644 arch/ia64/kernel/acpi/acpi.c
>> create mode 100644 arch/ia64/kernel/acpi/osi.c
>> create mode 100644 arch/x86/kernel/acpi/blacklist.c
>> create mode 100644 arch/x86/kernel/acpi/osi.c
>> delete mode 100644 drivers/acpi/blacklist.c
>>
>>
>
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3@redhat.com
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [Devel] [PATCH 0/7] Start deprecating _OSI on new architectures
@ 2015-01-23 16:32 ` Al Stone
0 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 16:33 UTC (permalink / raw)
To: devel
[-- Attachment #1: Type: text/plain, Size: 6890 bytes --]
On 01/23/2015 08:43 AM, Rafael J. Wysocki wrote:
> Hi Al,
>
> On Thursday, January 22, 2015 05:44:37 PM al.stone(a)linaro.org wrote:
>> From: Al Stone <al.stone(a)linaro.org>
>>
>> The use of the ACPI _OSI method in Linux has a long and sordid history.
>> Instead of perpetuating past complications on new architectures, the
>> consensus amongst those writing the ACPI specification and those using
>> it seems to be to ultimately deprecate the use of _OSI. I plan to
>> propose such a change to the ACPI specification in the near future.
>>
>> In the meantime, these patches rearrange the implementation of _OSI so
>> that it can be deprecated, or ultimately removed completely, on at least
>> arm64 platforms. This is done by simply moving the functions implementing
>> _OSI to arch-dependent locations. For x86, there should be no change
>> in functionality. For ia64, while it does duplicate some code from x86,
>> there is no longer any connection to the ACPI blacklist code that is only
>> used by x86. For arm64, any use of the _OSI method generates a warning
>> that it has been deprecated, and then always returns false; i.e., that
>> the capability being queried for, whether OS name or functionality, is
>> not supported. This is the first six of the patches.
>
> While I seem to understand the motivation, I don't really like moving code
> around, especially in the ia64 area where we have limited means to test the
> changes. And I hate code duplication pretty much in any form.
I'm not too wild about it either, but it seemed to avoid #ifdefs when I
was trying to think it through.
> Also I don't see anything wrong with sharing code between x86 and ia64 like
> we do today.
Fair enough. That's entirely up to you; the only reason I saw for
separating them was removing the one call to check the blacklist on
ia64. That would have a tiny time savings at boot time, but it is
definitely down in the noise level.
> So, why don't you move the _OSI handling out of osl.c into a separate file
> that will only build if something like CONFIG_ARCH_SPECIFIC_ACPI_OSI is not
> set (and same for blacklist.c). Then, you'll only need to make ARM64
> set CONFIG_ARCH_SPECIFIC_ACPI_OSI and provide the necessary functions
> and you can leave the other architectures alone.
>
> Does that make sense to you?
It does. I'll rewrite these based on that approach. Definitely a lot
less code motion involved...
>> The final patch changes the default value for the _OS_ method for arm64
>> only. Since there is no need to pretend to be older versions of Windows,
>> or any other OS at all, the _OS_ method will return "Linux" on arm64.
>> One can still use the acpi_os_name kernel parameter if there is a need
>> to use some other value.
>>
>> Since we are breaking apart code previously shared, I have tried to make
>> it so that applying the x86 patches alone will continue to compile, at
>> the expense of breaking the build on non-x86 platforms. However, once
>> all of the patches are applied, we should be able to compile on all three
>> architectures. It is best to treat these as one whole.
>>
>> I have only done simple testing with these patches on arm64 and x86 (AMD
>> Seattle and a Lenovo t440s ThinkPad, respectively). Things seem to work
>> as they should once booted, but this is a very, very small sample of
>> possible machines. The ia64 patches cross-compile, but I personally have
>> no way to test them.
>>
>> The arm64 patches also rely on having applied Hanjun's patches for ACPI 5.1
>> on arm64 [0]. The x86 and ia64 parts are not dependent on that patch set,
>> though, and should be usable independently (i.e., patches 1, 3, 4 and 6).
>>
>> NB: some of the patches do not pass checkpatch.pl; the failures I saw were
>> all part of the original code but are only showing up because that code is
>> changing location, so I have left them as is. If necessary, they could be
>> fixed but I was more concerned about the number of changes needed on ia64
>> and not having any way to test them.
>>
>>
>> [0] https://lkml.org/lkml/2015/1/14/586
>>
>>
>> Al Stone (6):
>> ia64: ACPI: move kernel acpi files to a directory
>> arm64: ACPI: move kernel acpi files to a directory
>> x86: ACPI: create arch-dependent version of acpi_osi_handler()
>> ia64: ACPI: create arch-dependent version of acpi_osi_handler()
>> arm64: ACPI: create arch-dependent version of acpi_osi_handler()
>> x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent
>> locations
>>
>> Hanjun Guo (1):
>> ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
>>
>> arch/arm64/Kconfig | 1 +
>> arch/arm64/kernel/Makefile | 2 +-
>> arch/arm64/kernel/acpi.c | 359 --------------
>> arch/arm64/kernel/acpi/Makefile | 1 +
>> arch/arm64/kernel/acpi/acpi.c | 359 ++++++++++++++
>> arch/arm64/kernel/acpi/osi.c | 26 +
>> arch/ia64/kernel/Makefile | 2 +-
>> arch/ia64/kernel/acpi-ext.c | 104 ----
>> arch/ia64/kernel/acpi.c | 1000 --------------------------------------
>> arch/ia64/kernel/acpi/Makefile | 1 +
>> arch/ia64/kernel/acpi/acpi-ext.c | 104 ++++
>> arch/ia64/kernel/acpi/acpi.c | 1000 ++++++++++++++++++++++++++++++++++++++
>> arch/ia64/kernel/acpi/osi.c | 119 +++++
>> arch/x86/kernel/acpi/Makefile | 2 +-
>> arch/x86/kernel/acpi/blacklist.c | 327 +++++++++++++
>> arch/x86/kernel/acpi/boot.c | 5 +-
>> arch/x86/kernel/acpi/osi.c | 255 ++++++++++
>> drivers/acpi/Kconfig | 8 +
>> drivers/acpi/Makefile | 1 -
>> drivers/acpi/blacklist.c | 323 ------------
>> drivers/acpi/osl.c | 217 ---------
>> include/acpi/acconfig.h | 2 +
>> include/acpi/platform/aclinux.h | 4 +
>> include/linux/acpi.h | 4 +-
>> 24 files changed, 2215 insertions(+), 2011 deletions(-)
>> delete mode 100644 arch/arm64/kernel/acpi.c
>> create mode 100644 arch/arm64/kernel/acpi/Makefile
>> create mode 100644 arch/arm64/kernel/acpi/acpi.c
>> create mode 100644 arch/arm64/kernel/acpi/osi.c
>> delete mode 100644 arch/ia64/kernel/acpi-ext.c
>> delete mode 100644 arch/ia64/kernel/acpi.c
>> create mode 100644 arch/ia64/kernel/acpi/Makefile
>> create mode 100644 arch/ia64/kernel/acpi/acpi-ext.c
>> create mode 100644 arch/ia64/kernel/acpi/acpi.c
>> create mode 100644 arch/ia64/kernel/acpi/osi.c
>> create mode 100644 arch/x86/kernel/acpi/blacklist.c
>> create mode 100644 arch/x86/kernel/acpi/osi.c
>> delete mode 100644 drivers/acpi/blacklist.c
>>
>>
>
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3(a)redhat.com
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
2015-01-23 15:55 ` Rafael J. Wysocki
(?)
(?)
@ 2015-01-23 16:34 ` Al Stone
-1 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 16:34 UTC (permalink / raw)
To: Rafael J. Wysocki, al.stone
Cc: tony.luck, fenghua.yu, catalin.marinas, will.deacon, tglx, mingo,
hpa, lenb, robert.moore, linux-ia64, linux-kernel, linux-acpi,
linux-arm-kernel, devel, linaro-acpi, linaro-kernel, patches
On 01/23/2015 08:55 AM, Rafael J. Wysocki wrote:
> On Thursday, January 22, 2015 05:44:44 PM al.stone@linaro.org wrote:
>> From: Hanjun Guo <hanjun.guo@linaro.org>
>>
>> ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
>> That doesn't make much sense in the ARM context, so set it to "Linux"
>> when CONFIG_ARM64.
>>
>> If it is necessary to change the return value from \_OS_ (that is, return
>> some value other than the default in ACPI_OS_NAME), use the kernel parameter
>> "acpi_os_name=<string>".
>>
>> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
>> ---
>> arch/arm64/Kconfig | 1 +
>> drivers/acpi/Kconfig | 8 ++++++++
>> include/acpi/acconfig.h | 2 ++
>> include/acpi/platform/aclinux.h | 4 ++++
>> 4 files changed, 15 insertions(+)
>>
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index 915aa16..20677d1 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -1,5 +1,6 @@
>
> If you added
>
> config ACPI_OS_NAME
> string
> default "Linux"
> depends on ACPI
>
> to this file, then you don't need to add the new select below and ->
>
>> config ARM64
>> def_bool y
>> + select ACPI_OS_NAME_LINUX if ACPI
>> select ACPI_REDUCED_HARDWARE_ONLY if ACPI
>> select ARCH_BINFMT_ELF_RANDOMIZE_PIE
>> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
>> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
>> index 3e3bd35..024c5f0 100644
>> --- a/drivers/acpi/Kconfig
>> +++ b/drivers/acpi/Kconfig
>> @@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
>>
>> If you are unsure what to do, do not enable this option.
>>
>> +config ACPI_OS_NAME_LINUX
>> + bool "Using Linux for _OS method" if EXPERT
>> + def_bool n
>> + When used, this option makes sure the _OS method returns
>> + the value "Linux".
>> +
>> + If you are unsure what to do, do not enable this option.
>> +
>
> -> you don't need this at all ->>
>
>> source "drivers/acpi/apei/Kconfig"
>>
>> config ACPI_EXTLOG
>> diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
>> index 5a0a3e5..1980bf4 100644
>> --- a/include/acpi/acconfig.h
>> +++ b/include/acpi/acconfig.h
>> @@ -69,7 +69,9 @@
>> * code that will not execute the _OSI method unless _OS matches the string
>> * below. Therefore, change this string at your own risk.
>> */
>> +#ifndef ACPI_OS_NAME
>> #define ACPI_OS_NAME "Microsoft Windows NT"
>> +#endif
>>
>> /* Maximum objects in the various object caches */
>>
>> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
>> index 1ba7c19..a8a7ee3 100644
>> --- a/include/acpi/platform/aclinux.h
>> +++ b/include/acpi/platform/aclinux.h
>> @@ -69,6 +69,10 @@
>> #define ACPI_REDUCED_HARDWARE 1
>> #endif
>>
>> +#ifdef CONFIG_ACPI_OS_NAME_LINUX
>> +#define ACPI_OS_NAME "Linux"
>> +#endif
>
> ->> and here you can do
>
> +#ifdef CONFIG_ACPI_OS_NAME
> +#define ACPI_OS_NAME CONFIG_ACPI_OS_NAME
> +#endif
>
> unless I'm missing something.
>
>> +
>> #include <linux/string.h>
>> #include <linux/kernel.h>
>> #include <linux/ctype.h>
>>
>
D'oh. Yup. I'll correct it.
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3@redhat.com
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
@ 2015-01-23 16:34 ` Al Stone
0 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 16:34 UTC (permalink / raw)
To: linux-arm-kernel
On 01/23/2015 08:55 AM, Rafael J. Wysocki wrote:
> On Thursday, January 22, 2015 05:44:44 PM al.stone at linaro.org wrote:
>> From: Hanjun Guo <hanjun.guo@linaro.org>
>>
>> ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
>> That doesn't make much sense in the ARM context, so set it to "Linux"
>> when CONFIG_ARM64.
>>
>> If it is necessary to change the return value from \_OS_ (that is, return
>> some value other than the default in ACPI_OS_NAME), use the kernel parameter
>> "acpi_os_name=<string>".
>>
>> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
>> ---
>> arch/arm64/Kconfig | 1 +
>> drivers/acpi/Kconfig | 8 ++++++++
>> include/acpi/acconfig.h | 2 ++
>> include/acpi/platform/aclinux.h | 4 ++++
>> 4 files changed, 15 insertions(+)
>>
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index 915aa16..20677d1 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -1,5 +1,6 @@
>
> If you added
>
> config ACPI_OS_NAME
> string
> default "Linux"
> depends on ACPI
>
> to this file, then you don't need to add the new select below and ->
>
>> config ARM64
>> def_bool y
>> + select ACPI_OS_NAME_LINUX if ACPI
>> select ACPI_REDUCED_HARDWARE_ONLY if ACPI
>> select ARCH_BINFMT_ELF_RANDOMIZE_PIE
>> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
>> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
>> index 3e3bd35..024c5f0 100644
>> --- a/drivers/acpi/Kconfig
>> +++ b/drivers/acpi/Kconfig
>> @@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
>>
>> If you are unsure what to do, do not enable this option.
>>
>> +config ACPI_OS_NAME_LINUX
>> + bool "Using Linux for _OS method" if EXPERT
>> + def_bool n
>> + When used, this option makes sure the _OS method returns
>> + the value "Linux".
>> +
>> + If you are unsure what to do, do not enable this option.
>> +
>
> -> you don't need this at all ->>
>
>> source "drivers/acpi/apei/Kconfig"
>>
>> config ACPI_EXTLOG
>> diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
>> index 5a0a3e5..1980bf4 100644
>> --- a/include/acpi/acconfig.h
>> +++ b/include/acpi/acconfig.h
>> @@ -69,7 +69,9 @@
>> * code that will not execute the _OSI method unless _OS matches the string
>> * below. Therefore, change this string at your own risk.
>> */
>> +#ifndef ACPI_OS_NAME
>> #define ACPI_OS_NAME "Microsoft Windows NT"
>> +#endif
>>
>> /* Maximum objects in the various object caches */
>>
>> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
>> index 1ba7c19..a8a7ee3 100644
>> --- a/include/acpi/platform/aclinux.h
>> +++ b/include/acpi/platform/aclinux.h
>> @@ -69,6 +69,10 @@
>> #define ACPI_REDUCED_HARDWARE 1
>> #endif
>>
>> +#ifdef CONFIG_ACPI_OS_NAME_LINUX
>> +#define ACPI_OS_NAME "Linux"
>> +#endif
>
> ->> and here you can do
>
> +#ifdef CONFIG_ACPI_OS_NAME
> +#define ACPI_OS_NAME CONFIG_ACPI_OS_NAME
> +#endif
>
> unless I'm missing something.
>
>> +
>> #include <linux/string.h>
>> #include <linux/kernel.h>
>> #include <linux/ctype.h>
>>
>
D'oh. Yup. I'll correct it.
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3 at redhat.com
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
@ 2015-01-23 16:34 ` Al Stone
0 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 16:34 UTC (permalink / raw)
To: Rafael J. Wysocki, al.stone
Cc: tony.luck, fenghua.yu, catalin.marinas, will.deacon, tglx, mingo,
hpa, lenb, robert.moore, linux-ia64, linux-kernel, linux-acpi,
linux-arm-kernel, devel, linaro-acpi, linaro-kernel, patches
On 01/23/2015 08:55 AM, Rafael J. Wysocki wrote:
> On Thursday, January 22, 2015 05:44:44 PM al.stone@linaro.org wrote:
>> From: Hanjun Guo <hanjun.guo@linaro.org>
>>
>> ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
>> That doesn't make much sense in the ARM context, so set it to "Linux"
>> when CONFIG_ARM64.
>>
>> If it is necessary to change the return value from \_OS_ (that is, return
>> some value other than the default in ACPI_OS_NAME), use the kernel parameter
>> "acpi_os_name=<string>".
>>
>> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
>> ---
>> arch/arm64/Kconfig | 1 +
>> drivers/acpi/Kconfig | 8 ++++++++
>> include/acpi/acconfig.h | 2 ++
>> include/acpi/platform/aclinux.h | 4 ++++
>> 4 files changed, 15 insertions(+)
>>
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index 915aa16..20677d1 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -1,5 +1,6 @@
>
> If you added
>
> config ACPI_OS_NAME
> string
> default "Linux"
> depends on ACPI
>
> to this file, then you don't need to add the new select below and ->
>
>> config ARM64
>> def_bool y
>> + select ACPI_OS_NAME_LINUX if ACPI
>> select ACPI_REDUCED_HARDWARE_ONLY if ACPI
>> select ARCH_BINFMT_ELF_RANDOMIZE_PIE
>> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
>> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
>> index 3e3bd35..024c5f0 100644
>> --- a/drivers/acpi/Kconfig
>> +++ b/drivers/acpi/Kconfig
>> @@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
>>
>> If you are unsure what to do, do not enable this option.
>>
>> +config ACPI_OS_NAME_LINUX
>> + bool "Using Linux for _OS method" if EXPERT
>> + def_bool n
>> + When used, this option makes sure the _OS method returns
>> + the value "Linux".
>> +
>> + If you are unsure what to do, do not enable this option.
>> +
>
> -> you don't need this at all ->>
>
>> source "drivers/acpi/apei/Kconfig"
>>
>> config ACPI_EXTLOG
>> diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
>> index 5a0a3e5..1980bf4 100644
>> --- a/include/acpi/acconfig.h
>> +++ b/include/acpi/acconfig.h
>> @@ -69,7 +69,9 @@
>> * code that will not execute the _OSI method unless _OS matches the string
>> * below. Therefore, change this string at your own risk.
>> */
>> +#ifndef ACPI_OS_NAME
>> #define ACPI_OS_NAME "Microsoft Windows NT"
>> +#endif
>>
>> /* Maximum objects in the various object caches */
>>
>> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
>> index 1ba7c19..a8a7ee3 100644
>> --- a/include/acpi/platform/aclinux.h
>> +++ b/include/acpi/platform/aclinux.h
>> @@ -69,6 +69,10 @@
>> #define ACPI_REDUCED_HARDWARE 1
>> #endif
>>
>> +#ifdef CONFIG_ACPI_OS_NAME_LINUX
>> +#define ACPI_OS_NAME "Linux"
>> +#endif
>
> ->> and here you can do
>
> +#ifdef CONFIG_ACPI_OS_NAME
> +#define ACPI_OS_NAME CONFIG_ACPI_OS_NAME
> +#endif
>
> unless I'm missing something.
>
>> +
>> #include <linux/string.h>
>> #include <linux/kernel.h>
>> #include <linux/ctype.h>
>>
>
D'oh. Yup. I'll correct it.
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3@redhat.com
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
* Re: [Devel] [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64
@ 2015-01-23 16:34 ` Al Stone
0 siblings, 0 replies; 41+ messages in thread
From: Al Stone @ 2015-01-23 16:34 UTC (permalink / raw)
To: devel
[-- Attachment #1: Type: text/plain, Size: 3408 bytes --]
On 01/23/2015 08:55 AM, Rafael J. Wysocki wrote:
> On Thursday, January 22, 2015 05:44:44 PM al.stone(a)linaro.org wrote:
>> From: Hanjun Guo <hanjun.guo(a)linaro.org>
>>
>> ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now.
>> That doesn't make much sense in the ARM context, so set it to "Linux"
>> when CONFIG_ARM64.
>>
>> If it is necessary to change the return value from \_OS_ (that is, return
>> some value other than the default in ACPI_OS_NAME), use the kernel parameter
>> "acpi_os_name=<string>".
>>
>> Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org>
>> ---
>> arch/arm64/Kconfig | 1 +
>> drivers/acpi/Kconfig | 8 ++++++++
>> include/acpi/acconfig.h | 2 ++
>> include/acpi/platform/aclinux.h | 4 ++++
>> 4 files changed, 15 insertions(+)
>>
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index 915aa16..20677d1 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -1,5 +1,6 @@
>
> If you added
>
> config ACPI_OS_NAME
> string
> default "Linux"
> depends on ACPI
>
> to this file, then you don't need to add the new select below and ->
>
>> config ARM64
>> def_bool y
>> + select ACPI_OS_NAME_LINUX if ACPI
>> select ACPI_REDUCED_HARDWARE_ONLY if ACPI
>> select ARCH_BINFMT_ELF_RANDOMIZE_PIE
>> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
>> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
>> index 3e3bd35..024c5f0 100644
>> --- a/drivers/acpi/Kconfig
>> +++ b/drivers/acpi/Kconfig
>> @@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY
>>
>> If you are unsure what to do, do not enable this option.
>>
>> +config ACPI_OS_NAME_LINUX
>> + bool "Using Linux for _OS method" if EXPERT
>> + def_bool n
>> + When used, this option makes sure the _OS method returns
>> + the value "Linux".
>> +
>> + If you are unsure what to do, do not enable this option.
>> +
>
> -> you don't need this at all ->>
>
>> source "drivers/acpi/apei/Kconfig"
>>
>> config ACPI_EXTLOG
>> diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
>> index 5a0a3e5..1980bf4 100644
>> --- a/include/acpi/acconfig.h
>> +++ b/include/acpi/acconfig.h
>> @@ -69,7 +69,9 @@
>> * code that will not execute the _OSI method unless _OS matches the string
>> * below. Therefore, change this string at your own risk.
>> */
>> +#ifndef ACPI_OS_NAME
>> #define ACPI_OS_NAME "Microsoft Windows NT"
>> +#endif
>>
>> /* Maximum objects in the various object caches */
>>
>> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
>> index 1ba7c19..a8a7ee3 100644
>> --- a/include/acpi/platform/aclinux.h
>> +++ b/include/acpi/platform/aclinux.h
>> @@ -69,6 +69,10 @@
>> #define ACPI_REDUCED_HARDWARE 1
>> #endif
>>
>> +#ifdef CONFIG_ACPI_OS_NAME_LINUX
>> +#define ACPI_OS_NAME "Linux"
>> +#endif
>
> ->> and here you can do
>
> +#ifdef CONFIG_ACPI_OS_NAME
> +#define ACPI_OS_NAME CONFIG_ACPI_OS_NAME
> +#endif
>
> unless I'm missing something.
>
>> +
>> #include <linux/string.h>
>> #include <linux/kernel.h>
>> #include <linux/ctype.h>
>>
>
D'oh. Yup. I'll correct it.
--
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3(a)redhat.com
-----------------------------------
^ permalink raw reply [flat|nested] 41+ messages in thread
end of thread, other threads:[~2015-01-23 16:35 UTC | newest]
Thread overview: 41+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-01-23 0:44 [PATCH 0/7] Start deprecating _OSI on new architectures al.stone
2015-01-23 0:44 ` al.stone
2015-01-23 0:44 ` al.stone at linaro.org
2015-01-23 0:44 ` [PATCH 1/7] ia64: ACPI: move kernel acpi files to a directory al.stone
2015-01-23 0:44 ` al.stone
2015-01-23 0:44 ` al.stone at linaro.org
2015-01-23 0:49 ` Al Stone
2015-01-23 0:49 ` Al Stone
2015-01-23 0:49 ` Al Stone
2015-01-23 0:44 ` [PATCH 2/7] arm64: " al.stone
2015-01-23 0:44 ` al.stone
2015-01-23 0:44 ` al.stone at linaro.org
2015-01-23 0:44 ` [PATCH 3/7] x86: ACPI: create arch-dependent version of acpi_osi_handler() al.stone
2015-01-23 0:44 ` al.stone
2015-01-23 0:44 ` al.stone at linaro.org
2015-01-23 0:44 ` [PATCH 4/7] ia64: " al.stone
2015-01-23 0:44 ` al.stone
2015-01-23 0:44 ` al.stone at linaro.org
2015-01-23 0:44 ` [PATCH 5/7] arm64: " al.stone
2015-01-23 0:44 ` al.stone
2015-01-23 0:44 ` al.stone at linaro.org
2015-01-23 0:44 ` [PATCH 6/7] x86: ia64: arm64: ACPI: move _OSI support functions to arch-dependent locations al.stone
2015-01-23 0:44 ` al.stone
2015-01-23 0:44 ` al.stone at linaro.org
2015-01-23 0:44 ` [PATCH 7/7] ACPI: use Linux as ACPI_OS_NAME for _OS on ARM64 al.stone
2015-01-23 0:44 ` al.stone
2015-01-23 0:44 ` al.stone at linaro.org
2015-01-23 15:55 ` Rafael J. Wysocki
2015-01-23 15:55 ` Rafael J. Wysocki
2015-01-23 15:55 ` Rafael J. Wysocki
2015-01-23 16:34 ` Al Stone
2015-01-23 16:34 ` [Devel] " Al Stone
2015-01-23 16:34 ` Al Stone
2015-01-23 16:34 ` Al Stone
2015-01-23 15:43 ` [PATCH 0/7] Start deprecating _OSI on new architectures Rafael J. Wysocki
2015-01-23 15:43 ` Rafael J. Wysocki
2015-01-23 15:43 ` Rafael J. Wysocki
2015-01-23 16:32 ` Al Stone
2015-01-23 16:33 ` [Devel] " Al Stone
2015-01-23 16:32 ` Al Stone
2015-01-23 16:32 ` Al Stone
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