From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: David Daney <ddaney@caviumnetworks.com>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
Gabriele Paoloni <gabriele.paoloni@huawei.com>,
"linaro-acpi@lists.linaro.org" <linaro-acpi@lists.linaro.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"will.deacon@arm.com" <will.deacon@arm.com>,
"okaya@codeaurora.org" <okaya@codeaurora.org>,
Wangyijing <wangyijing@huawei.com>,
"Lorenzo.Pieralisi@arm.com" <Lorenzo.Pieralisi@arm.com>,
Tomasz Nowicki <tn@semihalf.com>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"robert.richter@caviumnetworks.com"
<robert.richter@caviumnetworks.com>,
"msalter@redhat.com" <msalter@redhat.com>,
"jcm@redhat.com" <jcm@redhat.com>,
"Stefano.Stabellini@eu.citrix.com"
<Stefano.Stabellini@eu.citrix.com>,
"Liviu.Dudau@arm.com" <Liviu.Dudau@arm.com>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"tglx@linutronix.de" <tgl>
Subject: Re: [PATCH V2 22/23] pci, acpi: Match PCI config space accessors against platfrom specific quirks.
Date: Mon, 21 Dec 2015 23:42:18 +0100 [thread overview]
Message-ID: <201512212342.18960.arnd@arndb.de> (raw)
In-Reply-To: <5678370B.1030102@caviumnetworks.com>
On Monday 21 December 2015, David Daney wrote:
> On 12/21/2015 06:10 AM, Arnd Bergmann wrote:
> > On Monday 21 December 2015, Gabriele Paoloni wrote:
>
> > or require the BIOS to work around the hardware
> > quirks differently (e.g. by trapping config space access through secure
> > firmware, or going through an AML method to be defined).
>
> Some systems don't seem to have this capability. For example, in ARMv8
> (A.K.A. arm64), I haven't been able to figure out how to trap these
> accesses to EL3 for emulation. The specification is 5700 pages long
> though, so perhaps I missed that bit.
How about using AML then? This would be similar to what CHRP used with
RTAS calls to do PCI config space access.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: David Daney <ddaney@caviumnetworks.com>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
Gabriele Paoloni <gabriele.paoloni@huawei.com>,
"linaro-acpi@lists.linaro.org" <linaro-acpi@lists.linaro.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"will.deacon@arm.com" <will.deacon@arm.com>,
"okaya@codeaurora.org" <okaya@codeaurora.org>,
Wangyijing <wangyijing@huawei.com>,
"Lorenzo.Pieralisi@arm.com" <Lorenzo.Pieralisi@arm.com>,
Tomasz Nowicki <tn@semihalf.com>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"robert.richter@caviumnetworks.com"
<robert.richter@caviumnetworks.com>,
"msalter@redhat.com" <msalter@redhat.com>,
"jcm@redhat.com" <jcm@redhat.com>,
"Stefano.Stabellini@eu.citrix.com"
<Stefano.Stabellini@eu.citrix.com>,
"Liviu.Dudau@arm.com" <Liviu.Dudau@arm.com>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mw@semihalf.com" <mw@semihalf.com>,
"jchandra@broadcom.com" <jchandra@broadcom.com>,
"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"hanjun.guo@linaro.org" <hanjun.guo@linaro.org>,
"Suravee.Suthikulpanit@amd.com" <Suravee.Suthikulpanit@amd.com>,
"jiang.liu@linux.intel.com" <jiang.liu@linux.intel.com>
Subject: Re: [PATCH V2 22/23] pci, acpi: Match PCI config space accessors against platfrom specific quirks.
Date: Mon, 21 Dec 2015 23:42:18 +0100 [thread overview]
Message-ID: <201512212342.18960.arnd@arndb.de> (raw)
In-Reply-To: <5678370B.1030102@caviumnetworks.com>
On Monday 21 December 2015, David Daney wrote:
> On 12/21/2015 06:10 AM, Arnd Bergmann wrote:
> > On Monday 21 December 2015, Gabriele Paoloni wrote:
>
> > or require the BIOS to work around the hardware
> > quirks differently (e.g. by trapping config space access through secure
> > firmware, or going through an AML method to be defined).
>
> Some systems don't seem to have this capability. For example, in ARMv8
> (A.K.A. arm64), I haven't been able to figure out how to trap these
> accesses to EL3 for emulation. The specification is 5700 pages long
> though, so perhaps I missed that bit.
How about using AML then? This would be similar to what CHRP used with
RTAS calls to do PCI config space access.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: David Daney <ddaney@caviumnetworks.com>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
Gabriele Paoloni <gabriele.paoloni@huawei.com>,
"linaro-acpi@lists.linaro.org" <linaro-acpi@lists.linaro.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"will.deacon@arm.com" <will.deacon@arm.com>,
"okaya@codeaurora.org" <okaya@codeaurora.org>,
Wangyijing <wangyijing@huawei.com>,
"Lorenzo.Pieralisi@arm.com" <Lorenzo.Pieralisi@arm.com>,
Tomasz Nowicki <tn@semihalf.com>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"robert.richter@caviumnetworks.com"
<robert.richter@caviumnetworks.com>,
"msalter@redhat.com" <msalter@redhat.com>,
"jcm@redhat.com" <jcm@redhat.com>,
"Stefano.Stabellini@eu.citrix.com"
<Stefano.Stabellini@eu.citrix.com>,
"Liviu.Dudau@arm.com" <Liviu.Dudau@arm.com>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mw@semihalf.com" <mw@semihalf.com>,
"jchandra@broadcom.com" <jchandra@broadcom.com>,
"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"hanjun.guo@linaro.org" <hanjun.guo@linaro.org>,
"Suravee.Suthikulpanit@amd.com" <Suravee.Suthikulpanit@amd.com>,
"jiang.liu@linux.intel.com" <jiang.liu@linux.intel.com>
Subject: Re: [PATCH V2 22/23] pci, acpi: Match PCI config space accessors against platfrom specific quirks.
Date: Mon, 21 Dec 2015 23:42:18 +0100 [thread overview]
Message-ID: <201512212342.18960.arnd@arndb.de> (raw)
In-Reply-To: <5678370B.1030102@caviumnetworks.com>
On Monday 21 December 2015, David Daney wrote:
> On 12/21/2015 06:10 AM, Arnd Bergmann wrote:
> > On Monday 21 December 2015, Gabriele Paoloni wrote:
>
> > or require the BIOS to work around the hardware
> > quirks differently (e.g. by trapping config space access through secure
> > firmware, or going through an AML method to be defined).
>
> Some systems don't seem to have this capability. For example, in ARMv8
> (A.K.A. arm64), I haven't been able to figure out how to trap these
> accesses to EL3 for emulation. The specification is 5700 pages long
> though, so perhaps I missed that bit.
How about using AML then? This would be similar to what CHRP used with
RTAS calls to do PCI config space access.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2 22/23] pci, acpi: Match PCI config space accessors against platfrom specific quirks.
Date: Mon, 21 Dec 2015 23:42:18 +0100 [thread overview]
Message-ID: <201512212342.18960.arnd@arndb.de> (raw)
In-Reply-To: <5678370B.1030102@caviumnetworks.com>
On Monday 21 December 2015, David Daney wrote:
> On 12/21/2015 06:10 AM, Arnd Bergmann wrote:
> > On Monday 21 December 2015, Gabriele Paoloni wrote:
>
> > or require the BIOS to work around the hardware
> > quirks differently (e.g. by trapping config space access through secure
> > firmware, or going through an AML method to be defined).
>
> Some systems don't seem to have this capability. For example, in ARMv8
> (A.K.A. arm64), I haven't been able to figure out how to trap these
> accesses to EL3 for emulation. The specification is 5700 pages long
> though, so perhaps I missed that bit.
How about using AML then? This would be similar to what CHRP used with
RTAS calls to do PCI config space access.
Arnd
next prev parent reply other threads:[~2015-12-21 22:43 UTC|newest]
Thread overview: 171+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-16 15:16 [PATCH V2 00/23] MMCONFIG refactoring and support for ARM64 PCI hostbridge init based on ACPI Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 01/23] x86, pci: Reorder logic of pci_mmconfig_insert() function Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 02/23] x86, pci, acpi: Move arch-agnostic MMCONFIG (aka ECAM) and ACPI code out of arch/x86/ directory Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 03/23] pci, acpi, mcfg: Provide generic implementation of MCFG code initialization Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 04/23] x86, pci: mmconfig_{32,64}.c code refactoring - remove code duplication Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 04/23] x86, pci: mmconfig_{32, 64}.c " Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 05/23] x86, pci, ecam: mmconfig_64.c becomes default implementation for ECAM driver Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 06/23] XEN / PCI: Remove the dependence on arch x86 when PCI_MMCONFIG=y Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-17 10:25 ` Tomasz Nowicki
2015-12-17 10:25 ` Tomasz Nowicki
2015-12-17 10:40 ` Tomasz Nowicki
2015-12-17 10:40 ` Tomasz Nowicki
2015-12-21 18:12 ` Stefano Stabellini
2015-12-21 18:12 ` Stefano Stabellini
2015-12-21 18:12 ` Stefano Stabellini
2015-12-22 8:34 ` Tomasz Nowicki
2015-12-22 8:34 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 07/23] pci, acpi, mcfg: Provide default RAW ACPI PCI config space accessors Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 08/23] arm64, acpi: Use empty PCI config space accessors from mcfg.c file Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 09/23] pci, acpi, ecam: Add flag to indicate whether ECAM region was hot added or not Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 10/23] x86, pci: Cleanup platform specific MCFG data using previously added ECAM hot_added flag Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 11/23] arm64, pci: Remove useless boot time IRQ assignment when booting with DT Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2016-01-12 13:50 ` Lorenzo Pieralisi
2016-01-12 13:50 ` Lorenzo Pieralisi
2016-01-12 16:13 ` Tomasz Nowicki
2016-01-12 16:13 ` Tomasz Nowicki
2016-01-12 17:56 ` David Daney
2016-01-12 17:56 ` David Daney
2016-01-12 17:56 ` David Daney
2016-01-13 9:43 ` Tomasz Nowicki
2016-01-13 9:43 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 12/23] pci, acpi: Move ACPI host bridge device companion assignment to core code Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 13/23] x86, ia64, pci: Remove ACPI companion device from platform specific data Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 14/23] pci, acpi: Provide generic way to assign bus domain number Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 15/23] x86, ia64, pci: Convert arches to use PCI_DOMAINS_GENERIC Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 16/23] x86, ia64: Include acpi_pci_{add|remove}_bus to the default pcibios_{add|remove}_bus implementation Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 17/23] acpi, mcfg: Implement two calls that might be used to inject/remove MCFG region Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 18/23] x86, acpi, pci: Use equivalent function introduced in previous patch Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 19/23] acpi, mcfg: Add default PCI config accessors implementation and initial support for related quirks Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 20/23] ACPI, PCI: Refine the way to handle translation_offset for ACPI resources Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 21/23] pci, acpi: Support for ACPI based PCI hostbridge init Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-18 12:40 ` Arnd Bergmann
2015-12-18 12:40 ` Arnd Bergmann
2015-12-21 10:21 ` Tomasz Nowicki
2015-12-21 10:21 ` Tomasz Nowicki
2015-12-16 15:16 ` [PATCH V2 22/23] pci, acpi: Match PCI config space accessors against platfrom specific quirks Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-21 11:47 ` Gabriele Paoloni
2015-12-21 11:47 ` Gabriele Paoloni
2015-12-21 11:47 ` Gabriele Paoloni
2015-12-21 14:10 ` Arnd Bergmann
2015-12-21 14:10 ` Arnd Bergmann
2015-12-21 14:10 ` Arnd Bergmann
2015-12-21 14:10 ` Arnd Bergmann
2015-12-21 17:29 ` David Daney
2015-12-21 17:29 ` David Daney
2015-12-21 17:29 ` David Daney
2015-12-21 17:29 ` David Daney
2015-12-21 22:42 ` Arnd Bergmann [this message]
2015-12-21 22:42 ` Arnd Bergmann
2015-12-21 22:42 ` Arnd Bergmann
2015-12-21 22:42 ` Arnd Bergmann
2015-12-21 23:24 ` Jon Masters
2015-12-21 23:24 ` Jon Masters
2015-12-21 23:24 ` Jon Masters
2015-12-21 23:24 ` Jon Masters
2015-12-21 23:10 ` Jon Masters
2015-12-21 23:10 ` Jon Masters
2015-12-21 23:10 ` Jon Masters
2015-12-21 23:10 ` Jon Masters
2015-12-22 8:45 ` Tomasz Nowicki
2015-12-22 8:45 ` Tomasz Nowicki
2015-12-22 8:45 ` Tomasz Nowicki
2015-12-22 8:45 ` Tomasz Nowicki
2015-12-22 9:29 ` Gabriele Paoloni
2015-12-22 9:29 ` Gabriele Paoloni
2015-12-22 9:29 ` Gabriele Paoloni
2015-12-22 9:29 ` Gabriele Paoloni
2015-12-22 16:36 ` Jon Masters
2015-12-22 16:36 ` Jon Masters
2015-12-22 16:36 ` Jon Masters
2015-12-22 16:36 ` Jon Masters
2015-12-22 16:45 ` Jon Masters
2015-12-22 16:45 ` Jon Masters
2015-12-22 16:45 ` Jon Masters
2015-12-22 16:45 ` Jon Masters
2015-12-22 17:49 ` Gabriele Paoloni
2015-12-22 17:49 ` Gabriele Paoloni
2015-12-22 17:49 ` Gabriele Paoloni
2015-12-22 17:49 ` Gabriele Paoloni
2015-12-22 10:20 ` Tomasz Nowicki
2015-12-22 10:20 ` Tomasz Nowicki
2015-12-22 10:20 ` Tomasz Nowicki
2015-12-22 14:48 ` Gabriele Paoloni
2015-12-22 14:48 ` Gabriele Paoloni
2015-12-22 14:48 ` Gabriele Paoloni
2015-12-23 9:38 ` Hanjun Guo
2015-12-23 9:38 ` Hanjun Guo
2015-12-23 9:38 ` Hanjun Guo
2016-01-08 14:16 ` Mark Salter
2016-01-08 14:16 ` Mark Salter
2016-01-08 14:36 ` Tomasz Nowicki
2016-01-08 14:36 ` Tomasz Nowicki
2016-01-08 14:51 ` Mark Salter
2016-01-08 14:51 ` Mark Salter
2016-01-08 14:42 ` Jeremy Linton
2016-01-08 14:42 ` Jeremy Linton
2016-01-08 14:42 ` Jeremy Linton
2016-01-08 15:01 ` Mark Rutland
2016-01-08 15:01 ` Mark Rutland
2016-01-08 15:01 ` Mark Rutland
2016-01-08 15:12 ` Mark Rutland
2016-01-08 15:12 ` Mark Rutland
2016-01-08 16:07 ` Mark Salter
2016-01-08 16:07 ` Mark Salter
2015-12-16 15:16 ` [PATCH V2 23/23] arm64, pci, acpi: Start using ACPI based PCI host bridge driver for ARM64 Tomasz Nowicki
2015-12-16 15:16 ` Tomasz Nowicki
2015-12-17 21:24 ` [PATCH V2 00/23] MMCONFIG refactoring and support for ARM64 PCI hostbridge init based on ACPI Sinan Kaya
2015-12-17 21:24 ` Sinan Kaya
2015-12-18 12:26 ` Tomasz Nowicki
2015-12-18 12:26 ` Tomasz Nowicki
2015-12-18 18:56 ` okaya
2015-12-18 18:56 ` okaya at codeaurora.org
2015-12-21 10:37 ` Tomasz Nowicki
2015-12-21 10:37 ` Tomasz Nowicki
2015-12-21 12:10 ` Lorenzo Pieralisi
2015-12-21 12:10 ` Lorenzo Pieralisi
2015-12-21 12:42 ` Tomasz Nowicki
2015-12-21 12:42 ` Tomasz Nowicki
2015-12-21 14:15 ` Arnd Bergmann
2015-12-21 14:15 ` Arnd Bergmann
2015-12-21 15:26 ` Okaya
2015-12-21 15:26 ` Okaya at codeaurora.org
2015-12-21 22:39 ` Arnd Bergmann
2015-12-21 22:39 ` Arnd Bergmann
2016-01-11 15:39 ` Lorenzo Pieralisi
2016-01-11 15:39 ` Lorenzo Pieralisi
2016-01-11 15:56 ` Sinan Kaya
2016-01-11 15:56 ` Sinan Kaya
2016-01-12 14:30 ` Arnd Bergmann
2016-01-12 14:30 ` Arnd Bergmann
2016-01-12 18:38 ` Lorenzo Pieralisi
2016-01-12 18:38 ` Lorenzo Pieralisi
2016-01-12 21:37 ` Arnd Bergmann
2016-01-12 21:37 ` Arnd Bergmann
2016-01-11 16:09 ` Lorenzo Pieralisi
2016-01-11 16:09 ` Lorenzo Pieralisi
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