* [PATCH 0/2] char/agp: consolidate asm/agp.h
@ 2023-02-12 8:46 Mike Rapoport
2023-02-12 8:46 ` [PATCH 1/2] char/agp: consolidate {alloc,free}_gatt_pages() Mike Rapoport
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Mike Rapoport @ 2023-02-12 8:46 UTC (permalink / raw)
To: Arnd Bergmann
Cc: David Airlie, David S. Miller, Helge Deller, Matt Turner,
Michael Ellerman, x86, dri-devel, linux-alpha, linux-arch,
linux-ia64, linux-kernel, linux-parisc, linuxppc-dev, sparclinux,
Mike Rapoport (IBM)
From: "Mike Rapoport (IBM)" <rppt@kernel.org>
Hi,
asm/agp.h is duplicated in several architectures, with x86 being the
only instance that differs from the rest.
Introduce asm-generic/agp.h and use it instead of per-architecture
headers for the most cases.
I believe that asm-generic is the best tree to pick up this patches.
Mike Rapoport (IBM) (2):
char/agp: consolidate {alloc,free}_gatt_pages()
char/agp: introduce asm-generic/agp.h
arch/alpha/include/asm/Kbuild | 1 +
arch/alpha/include/asm/agp.h | 19 -------------------
arch/ia64/include/asm/Kbuild | 1 +
arch/ia64/include/asm/agp.h | 27 ---------------------------
arch/parisc/include/asm/Kbuild | 1 +
arch/parisc/include/asm/agp.h | 21 ---------------------
arch/powerpc/include/asm/Kbuild | 1 +
arch/powerpc/include/asm/agp.h | 19 -------------------
arch/sparc/include/asm/Kbuild | 1 +
arch/sparc/include/asm/agp.h | 17 -----------------
arch/x86/include/asm/agp.h | 6 ------
drivers/char/agp/agp.h | 6 ++++++
include/asm-generic/agp.h | 11 +++++++++++
13 files changed, 22 insertions(+), 109 deletions(-)
delete mode 100644 arch/alpha/include/asm/agp.h
delete mode 100644 arch/ia64/include/asm/agp.h
delete mode 100644 arch/parisc/include/asm/agp.h
delete mode 100644 arch/powerpc/include/asm/agp.h
delete mode 100644 arch/sparc/include/asm/agp.h
create mode 100644 include/asm-generic/agp.h
base-commit: 2241ab53cbb5cdb08a6b2d4688feb13971058f65
--
2.35.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 1/2] char/agp: consolidate {alloc,free}_gatt_pages()
2023-02-12 8:46 [PATCH 0/2] char/agp: consolidate asm/agp.h Mike Rapoport
@ 2023-02-12 8:46 ` Mike Rapoport
2023-02-12 8:46 ` [PATCH 2/2] char/agp: introduce asm-generic/agp.h Mike Rapoport
2023-02-27 20:04 ` [PATCH 0/2] char/agp: consolidate asm/agp.h Arnd Bergmann
2 siblings, 0 replies; 4+ messages in thread
From: Mike Rapoport @ 2023-02-12 8:46 UTC (permalink / raw)
To: Arnd Bergmann
Cc: David Airlie, David S. Miller, Helge Deller, Matt Turner,
Michael Ellerman, x86, dri-devel, linux-alpha, linux-arch,
linux-ia64, linux-kernel, linux-parisc, linuxppc-dev, sparclinux,
Mike Rapoport (IBM)
From: "Mike Rapoport (IBM)" <rppt@kernel.org>
There is a copy of alloc_gatt_pages() and free_gatt_pages in several
architectures in arch/$ARCH/include/asm/agp.h. All the copies do exactly
the same: alias alloc_gatt_pages() to __get_free_pages(GFP_KERNEL) and
alias free_gatt_pages() to free_pages().
Define alloc_gatt_pages() and free_gatt_pages() in drivers/char/agp/agp.h
and drop per-architecture definitions.
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
---
arch/alpha/include/asm/agp.h | 6 ------
arch/ia64/include/asm/agp.h | 6 ------
arch/parisc/include/asm/agp.h | 6 ------
arch/powerpc/include/asm/agp.h | 6 ------
arch/sparc/include/asm/agp.h | 6 ------
arch/x86/include/asm/agp.h | 6 ------
drivers/char/agp/agp.h | 6 ++++++
7 files changed, 6 insertions(+), 36 deletions(-)
diff --git a/arch/alpha/include/asm/agp.h b/arch/alpha/include/asm/agp.h
index 7874f063d000..4197b3bc78ee 100644
--- a/arch/alpha/include/asm/agp.h
+++ b/arch/alpha/include/asm/agp.h
@@ -10,10 +10,4 @@
#define unmap_page_from_agp(page) do { } while (0)
#define flush_agp_cache() mb()
-/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-#define alloc_gatt_pages(order) \
- ((char *)__get_free_pages(GFP_KERNEL, (order)))
-#define free_gatt_pages(table, order) \
- free_pages((unsigned long)(table), (order))
-
#endif
diff --git a/arch/ia64/include/asm/agp.h b/arch/ia64/include/asm/agp.h
index 0261507dc264..f42c7dcb3d79 100644
--- a/arch/ia64/include/asm/agp.h
+++ b/arch/ia64/include/asm/agp.h
@@ -18,10 +18,4 @@
#define unmap_page_from_agp(page) do { } while (0)
#define flush_agp_cache() mb()
-/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-#define alloc_gatt_pages(order) \
- ((char *)__get_free_pages(GFP_KERNEL, (order)))
-#define free_gatt_pages(table, order) \
- free_pages((unsigned long)(table), (order))
-
#endif /* _ASM_IA64_AGP_H */
diff --git a/arch/parisc/include/asm/agp.h b/arch/parisc/include/asm/agp.h
index 14ae54cfd368..d193a48490e2 100644
--- a/arch/parisc/include/asm/agp.h
+++ b/arch/parisc/include/asm/agp.h
@@ -12,10 +12,4 @@
#define unmap_page_from_agp(page) do { } while (0)
#define flush_agp_cache() mb()
-/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-#define alloc_gatt_pages(order) \
- ((char *)__get_free_pages(GFP_KERNEL, (order)))
-#define free_gatt_pages(table, order) \
- free_pages((unsigned long)(table), (order))
-
#endif /* _ASM_PARISC_AGP_H */
diff --git a/arch/powerpc/include/asm/agp.h b/arch/powerpc/include/asm/agp.h
index 6b6485c988dd..e86f2ce476c9 100644
--- a/arch/powerpc/include/asm/agp.h
+++ b/arch/powerpc/include/asm/agp.h
@@ -9,11 +9,5 @@
#define unmap_page_from_agp(page) do {} while (0)
#define flush_agp_cache() mb()
-/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-#define alloc_gatt_pages(order) \
- ((char *)__get_free_pages(GFP_KERNEL, (order)))
-#define free_gatt_pages(table, order) \
- free_pages((unsigned long)(table), (order))
-
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_AGP_H */
diff --git a/arch/sparc/include/asm/agp.h b/arch/sparc/include/asm/agp.h
index 2d0ff84cee3f..5186924fa673 100644
--- a/arch/sparc/include/asm/agp.h
+++ b/arch/sparc/include/asm/agp.h
@@ -8,10 +8,4 @@
#define unmap_page_from_agp(page) do { } while (0)
#define flush_agp_cache() mb()
-/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-#define alloc_gatt_pages(order) \
- ((char *)__get_free_pages(GFP_KERNEL, (order)))
-#define free_gatt_pages(table, order) \
- free_pages((unsigned long)(table), (order))
-
#endif
diff --git a/arch/x86/include/asm/agp.h b/arch/x86/include/asm/agp.h
index cd7b14322035..c8c111d8fbd7 100644
--- a/arch/x86/include/asm/agp.h
+++ b/arch/x86/include/asm/agp.h
@@ -23,10 +23,4 @@
*/
#define flush_agp_cache() wbinvd()
-/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-#define alloc_gatt_pages(order) \
- ((char *)__get_free_pages(GFP_KERNEL, (order)))
-#define free_gatt_pages(table, order) \
- free_pages((unsigned long)(table), (order))
-
#endif /* _ASM_X86_AGP_H */
diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index bb09d64cd51e..8771dcc9b8e2 100644
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -236,6 +236,12 @@ void agp3_generic_tlbflush(struct agp_memory *mem);
int agp3_generic_configure(void);
void agp3_generic_cleanup(void);
+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
+#define alloc_gatt_pages(order) \
+ ((char *)__get_free_pages(GFP_KERNEL, (order)))
+#define free_gatt_pages(table, order) \
+ free_pages((unsigned long)(table), (order))
+
/* aperture sizes have been standardised since v3 */
#define AGP_GENERIC_SIZES_ENTRIES 11
extern const struct aper_size_info_16 agp3_generic_sizes[];
--
2.35.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 2/2] char/agp: introduce asm-generic/agp.h
2023-02-12 8:46 [PATCH 0/2] char/agp: consolidate asm/agp.h Mike Rapoport
2023-02-12 8:46 ` [PATCH 1/2] char/agp: consolidate {alloc,free}_gatt_pages() Mike Rapoport
@ 2023-02-12 8:46 ` Mike Rapoport
2023-02-27 20:04 ` [PATCH 0/2] char/agp: consolidate asm/agp.h Arnd Bergmann
2 siblings, 0 replies; 4+ messages in thread
From: Mike Rapoport @ 2023-02-12 8:46 UTC (permalink / raw)
To: Arnd Bergmann
Cc: David Airlie, David S. Miller, Helge Deller, Matt Turner,
Michael Ellerman, x86, dri-devel, linux-alpha, linux-arch,
linux-ia64, linux-kernel, linux-parisc, linuxppc-dev, sparclinux,
Mike Rapoport (IBM)
From: "Mike Rapoport (IBM)" <rppt@kernel.org>
There are several architectures that duplicate definitions of
map_page_into_agp(), unmap_page_from_agp() and flush_agp_cache().
Define those in asm-generic/agp.h and use it instead of duplicated
per-architecture headers.
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
---
arch/alpha/include/asm/Kbuild | 1 +
arch/alpha/include/asm/agp.h | 13 ------------
arch/ia64/include/asm/Kbuild | 1 +
arch/ia64/include/asm/agp.h | 21 -------------------
arch/parisc/include/asm/Kbuild | 1 +
arch/parisc/include/asm/agp.h | 15 -------------
arch/powerpc/include/asm/Kbuild | 1 +
arch/sparc/include/asm/Kbuild | 1 +
arch/sparc/include/asm/agp.h | 11 ----------
.../include/asm => include/asm-generic}/agp.h | 8 +++----
10 files changed, 8 insertions(+), 65 deletions(-)
delete mode 100644 arch/alpha/include/asm/agp.h
delete mode 100644 arch/ia64/include/asm/agp.h
delete mode 100644 arch/parisc/include/asm/agp.h
delete mode 100644 arch/sparc/include/asm/agp.h
rename {arch/powerpc/include/asm => include/asm-generic}/agp.h (59%)
diff --git a/arch/alpha/include/asm/Kbuild b/arch/alpha/include/asm/Kbuild
index 42911c8340c7..54f5126628c6 100644
--- a/arch/alpha/include/asm/Kbuild
+++ b/arch/alpha/include/asm/Kbuild
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table.h
+generic-y += agp.h
generic-y += export.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h
diff --git a/arch/alpha/include/asm/agp.h b/arch/alpha/include/asm/agp.h
deleted file mode 100644
index 4197b3bc78ee..000000000000
--- a/arch/alpha/include/asm/agp.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef AGP_H
-#define AGP_H 1
-
-#include <asm/io.h>
-
-/* dummy for now */
-
-#define map_page_into_agp(page) do { } while (0)
-#define unmap_page_from_agp(page) do { } while (0)
-#define flush_agp_cache() mb()
-
-#endif
diff --git a/arch/ia64/include/asm/Kbuild b/arch/ia64/include/asm/Kbuild
index f994c1daf9d4..aefae2efde9f 100644
--- a/arch/ia64/include/asm/Kbuild
+++ b/arch/ia64/include/asm/Kbuild
@@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table.h
+generic-y += agp.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h
generic-y += vtime.h
diff --git a/arch/ia64/include/asm/agp.h b/arch/ia64/include/asm/agp.h
deleted file mode 100644
index f42c7dcb3d79..000000000000
--- a/arch/ia64/include/asm/agp.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_AGP_H
-#define _ASM_IA64_AGP_H
-
-/*
- * IA-64 specific AGP definitions.
- *
- * Copyright (C) 2002-2003 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@hpl.hp.com>
- */
-
-/*
- * To avoid memory-attribute aliasing issues, we require that the AGPGART engine operate
- * in coherent mode, which lets us map the AGP memory as normal (write-back) memory
- * (unlike x86, where it gets mapped "write-coalescing").
- */
-#define map_page_into_agp(page) do { } while (0)
-#define unmap_page_from_agp(page) do { } while (0)
-#define flush_agp_cache() mb()
-
-#endif /* _ASM_IA64_AGP_H */
diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
index e6e7f74c8ac9..4fb596d94c89 100644
--- a/arch/parisc/include/asm/Kbuild
+++ b/arch/parisc/include/asm/Kbuild
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table_32.h
generated-y += syscall_table_64.h
+generic-y += agp.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h
generic-y += user.h
diff --git a/arch/parisc/include/asm/agp.h b/arch/parisc/include/asm/agp.h
deleted file mode 100644
index d193a48490e2..000000000000
--- a/arch/parisc/include/asm/agp.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_PARISC_AGP_H
-#define _ASM_PARISC_AGP_H
-
-/*
- * PARISC specific AGP definitions.
- * Copyright (c) 2006 Kyle McMartin <kyle@parisc-linux.org>
- *
- */
-
-#define map_page_into_agp(page) do { } while (0)
-#define unmap_page_from_agp(page) do { } while (0)
-#define flush_agp_cache() mb()
-
-#endif /* _ASM_PARISC_AGP_H */
diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild
index bcf95ce0964f..419319c4963c 100644
--- a/arch/powerpc/include/asm/Kbuild
+++ b/arch/powerpc/include/asm/Kbuild
@@ -2,6 +2,7 @@
generated-y += syscall_table_32.h
generated-y += syscall_table_64.h
generated-y += syscall_table_spu.h
+generic-y += agp.h
generic-y += export.h
generic-y += kvm_types.h
generic-y += mcs_spinlock.h
diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
index 0b9d98ced34a..595ca0be286b 100644
--- a/arch/sparc/include/asm/Kbuild
+++ b/arch/sparc/include/asm/Kbuild
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table_32.h
generated-y += syscall_table_64.h
+generic-y += agp.h
generic-y += export.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h
diff --git a/arch/sparc/include/asm/agp.h b/arch/sparc/include/asm/agp.h
deleted file mode 100644
index 5186924fa673..000000000000
--- a/arch/sparc/include/asm/agp.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef AGP_H
-#define AGP_H 1
-
-/* dummy for now */
-
-#define map_page_into_agp(page) do { } while (0)
-#define unmap_page_from_agp(page) do { } while (0)
-#define flush_agp_cache() mb()
-
-#endif
diff --git a/arch/powerpc/include/asm/agp.h b/include/asm-generic/agp.h
similarity index 59%
rename from arch/powerpc/include/asm/agp.h
rename to include/asm-generic/agp.h
index e86f2ce476c9..10db92ede168 100644
--- a/arch/powerpc/include/asm/agp.h
+++ b/include/asm-generic/agp.h
@@ -1,7 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_POWERPC_AGP_H
-#define _ASM_POWERPC_AGP_H
-#ifdef __KERNEL__
+#ifndef _ASM_GENERIC_AGP_H
+#define _ASM_GENERIC_AGP_H
#include <asm/io.h>
@@ -9,5 +8,4 @@
#define unmap_page_from_agp(page) do {} while (0)
#define flush_agp_cache() mb()
-#endif /* __KERNEL__ */
-#endif /* _ASM_POWERPC_AGP_H */
+#endif /* _ASM_GENERIC_AGP_H */
--
2.35.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 0/2] char/agp: consolidate asm/agp.h
2023-02-12 8:46 [PATCH 0/2] char/agp: consolidate asm/agp.h Mike Rapoport
2023-02-12 8:46 ` [PATCH 1/2] char/agp: consolidate {alloc,free}_gatt_pages() Mike Rapoport
2023-02-12 8:46 ` [PATCH 2/2] char/agp: introduce asm-generic/agp.h Mike Rapoport
@ 2023-02-27 20:04 ` Arnd Bergmann
2 siblings, 0 replies; 4+ messages in thread
From: Arnd Bergmann @ 2023-02-27 20:04 UTC (permalink / raw)
To: Mike Rapoport
Cc: Dave Airlie, David S . Miller, Helge Deller, Matt Turner,
Michael Ellerman, x86, dri-devel, linux-alpha, Linux-Arch,
linux-ia64, linux-kernel, linux-parisc, linuxppc-dev, sparclinux
On Sun, Feb 12, 2023, at 09:46, Mike Rapoport wrote:
> From: "Mike Rapoport (IBM)" <rppt@kernel.org>
>
> asm/agp.h is duplicated in several architectures, with x86 being the
> only instance that differs from the rest.
>
> Introduce asm-generic/agp.h and use it instead of per-architecture
> headers for the most cases.
>
> I believe that asm-generic is the best tree to pick up this patches.
>
> Mike Rapoport (IBM) (2): char/agp: consolidate
> {alloc,free}_gatt_pages() char/agp: introduce asm-generic/agp.h
Hi Mike,
It looks like I wrote an email saying I merged these two patches,
but never actually sent it out. Not sure if you found out another
way, but this was part of the asm-generic tree for 6.3 and is now
merged upstream.
Thanks for the cleanup,
Arnd
^ permalink raw reply [flat|nested] 4+ messages in thread
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