From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: Mark Salter <msalter@redhat.com>
Cc: Sinan Kaya <okaya@codeaurora.org>,
Tomasz Nowicki <tn@semihalf.com>,
bhelgaas@google.com, arnd@arndb.de, will.deacon@arm.com,
catalin.marinas@arm.com, rjw@rjwysocki.net,
hanjun.guo@linaro.org, jiang.liu@linux.intel.com,
Stefano.Stabellini@eu.citrix.com,
robert.richter@caviumnetworks.com, mw@semihalf.com,
Liviu.Dudau@arm.com, ddaney@caviumnetworks.com,
tglx@linutronix.de, wangyijing@huawei.com,
Suravee.Suthikulpanit@amd.com, linux-pci@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org,
linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org,
jchandra@broadcom.com, jcm@redhat.com
Subject: Re: [PATCH V3 00/21] MMCONFIG refactoring and support for ARM64 PCI hostbridge init based on ACPI
Date: Thu, 14 Jan 2016 17:07:23 +0000 [thread overview]
Message-ID: <20160114170723.GB20706@red-moon> (raw)
In-Reply-To: <1452789524.28109.24.camel@redhat.com>
On Thu, Jan 14, 2016 at 11:38:44AM -0500, Mark Salter wrote:
[...]
> You would lose that bet. AddressMinimum/Maximum describe the
> PCI bus addresses.
In the mainline DT (APM Mustang), the CPU physical address corresponding
to IO space is 0xe010000000, PCI bus address is 0x0.
> QWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
> 0x0000000000000000, // Granularity
> 0x0000000010000000, // Range Minimum
> 0x000000001000FFFF, // Range Maximum
> 0x000000E000000000, // Translation Offset
See above, I will get the APM specifications to countercheck.
I agree with you we have to verify if this IO space limitation is
real or it is just an x86ism, in which case we remove that check.
Lorenzo
> 0x0000000000010000, // Length
> ,, , TypeStatic)
>
>
> > Jiang's patch:
> >
> > https://lkml.org/lkml/2015/12/16/249
> >
> > parses the IO descriptors and stores the AddressMinimum, AddressMaximum
> > in the IO resource (with AddressTranslation as offset which must be the
> > *CPU* physical address mapping IO), from the log above it seems to me in
> > AddressMinimum APM specifies the *CPU* physical address generating IO
> > cycles.
> >
> > All in all, I was right to fear this would happen, and I already
> > raised the point within the ACPI spec working group, ACPI IO
> > descriptors specification is ambiguous and we must agree on how
> > they have to be specified once for all.
> >
> > Lorenzo
>
next prev parent reply other threads:[~2016-01-14 17:07 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-13 13:20 [PATCH V3 00/21] MMCONFIG refactoring and support for ARM64 PCI hostbridge init based on ACPI Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 01/21] x86, pci: Reorder logic of pci_mmconfig_insert() function Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 02/21] x86, pci, acpi: Move arch-agnostic MMCONFIG (aka ECAM) and ACPI code out of arch/x86/ directory Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 03/21] pci, acpi, mcfg: Provide generic implementation of MCFG code initialization Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 04/21] x86, pci: mmconfig_{32,64}.c code refactoring - remove code duplication Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 05/21] x86, pci, ecam: mmconfig_64.c becomes default implementation for ECAM driver Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 06/21] XEN / PCI: Remove the dependence on arch x86 when PCI_MMCONFIG=y Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 07/21] pci, acpi, mcfg: Provide default RAW ACPI PCI config space accessors Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 08/21] arm64, acpi: Use empty PCI config space accessors from mcfg.c file Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 09/21] pci, acpi, ecam: Add flag to indicate whether ECAM region was hot added or not Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 10/21] x86, pci: Cleanup platform specific MCFG data using previously added ECAM hot_added flag Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 11/21] pci, acpi: Move ACPI host bridge device companion assignment to core code Tomasz Nowicki
2016-01-19 16:02 ` Lorenzo Pieralisi
2016-01-20 11:20 ` Tomasz Nowicki
2016-01-20 12:38 ` Lorenzo Pieralisi
2016-01-20 13:40 ` Tomasz Nowicki
2016-01-20 14:22 ` Lorenzo Pieralisi
2016-01-20 14:41 ` Tomasz Nowicki
2016-01-27 17:42 ` Lorenzo Pieralisi
2016-01-13 13:20 ` [PATCH V3 12/21] x86, ia64, pci: Remove ACPI companion device from platform specific data Tomasz Nowicki
2016-01-13 13:20 ` [PATCH V3 13/21] pci, acpi: Provide generic way to assign bus domain number Tomasz Nowicki
2016-01-21 18:22 ` Lorenzo Pieralisi
2016-01-21 18:38 ` Tomasz Nowicki
2016-01-22 11:25 ` Lorenzo Pieralisi
2016-01-13 13:21 ` [PATCH V3 14/21] x86, ia64: Include acpi_pci_{add|remove}_bus to the default pcibios_{add|remove}_bus implementation Tomasz Nowicki
2016-01-14 16:33 ` Lorenzo Pieralisi
2016-01-14 17:45 ` Tomasz Nowicki
2016-01-13 13:21 ` [PATCH V3 15/21] acpi, mcfg: Implement two calls that might be used to inject/remove MCFG region Tomasz Nowicki
2016-01-13 13:21 ` [PATCH V3 16/21] x86, acpi, pci: Use equivalent function introduced in previous patch Tomasz Nowicki
2016-01-13 13:21 ` [PATCH V3 17/21] acpi, mcfg: Add default PCI config accessors implementation and initial support for related quirks Tomasz Nowicki
2016-01-13 13:21 ` [PATCH V3 18/21] ACPI, PCI: Refine the way to handle translation_offset for ACPI resources Tomasz Nowicki
2016-01-14 12:13 ` Lorenzo Pieralisi
2016-01-19 12:20 ` Lorenzo Pieralisi
2016-01-25 9:52 ` Lorenzo Pieralisi
2016-01-25 16:57 ` Mark Salter
2016-01-28 10:23 ` Hanjun Guo
2016-01-13 13:21 ` [PATCH V3 19/21] pci, acpi: Support for ACPI based generic PCI host controller init Tomasz Nowicki
2016-01-15 9:57 ` Hanjun Guo
2016-01-18 9:57 ` Tomasz Nowicki
2016-01-18 9:25 ` liudongdong (C)
2016-01-18 10:34 ` Tomasz Nowicki
2016-01-19 11:58 ` Lorenzo Pieralisi
2016-01-20 15:01 ` Tomasz Nowicki
2016-01-13 13:21 ` [PATCH V3 20/21] pci, acpi: Match PCI config space accessors against platfrom specific quirks Tomasz Nowicki
2016-01-14 15:36 ` Mark Salter
2016-01-18 12:41 ` Tomasz Nowicki
2016-01-19 1:49 ` liudongdong (C)
2016-01-19 7:55 ` Tomasz Nowicki
2016-01-19 8:52 ` liudongdong (C)
2016-01-13 13:21 ` [PATCH V3 21/21] arm64, pci, acpi: Start using ACPI based PCI host bridge driver for ARM64 Tomasz Nowicki
2016-01-13 15:24 ` [PATCH V3 00/21] MMCONFIG refactoring and support for ARM64 PCI hostbridge init based on ACPI Sinan Kaya
2016-01-13 15:27 ` Tomasz Nowicki
2016-01-14 13:44 ` Graeme Gregory
2016-01-14 14:00 ` Catalin Marinas
2016-01-14 14:09 ` Mark Salter
2016-01-14 14:50 ` Catalin Marinas
2016-01-14 14:59 ` Mark Salter
2016-01-14 14:01 ` Mark Salter
2016-01-14 14:15 ` Graeme Gregory
2016-01-14 14:24 ` Mark Salter
2016-01-15 12:12 ` Graeme Gregory
2016-01-18 14:04 ` Graeme Gregory
2016-01-19 20:25 ` Bjorn Helgaas
2016-01-19 20:40 ` Russell King - ARM Linux
2016-01-19 23:37 ` Mark Salter
2016-01-14 15:29 ` Mark Salter
2016-01-14 15:38 ` Sinan Kaya
2016-01-14 16:12 ` Lorenzo Pieralisi
2016-01-14 16:38 ` Mark Salter
2016-01-14 17:07 ` Lorenzo Pieralisi [this message]
2016-01-14 17:32 ` Mark Salter
2016-01-14 17:59 ` Lorenzo Pieralisi
2016-01-14 18:44 ` Mark Salter
2016-01-14 22:51 ` Jeremy Linton
2016-01-14 22:55 ` Jeremy Linton
2016-01-15 11:00 ` Hanjun Guo
2016-01-18 14:37 ` Hanjun Guo
2016-01-29 6:43 ` liudongdong (C)
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