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SubjectRe: [PATCH 2.6.21-rc5 1/3] msi: introduce ARCH_SUPPORTS_MSI Kconfig option (rev2)
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On Fri, 2007-03-30 at 16:05 -0700, Dan Williams wrote:
> Allows architectures to advertise that they support MSI rather than listing
> each architecture as a PCI_MSI dependency.
>
> rev2:
> * update i386 and x86_64 as well
>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>

Hi Greg,

Are you planning on merging this one? AFAICT it still applies cleanly.
At the moment my powerpc MSI patches depend on it.

cheers


> arch/arm/Kconfig | 1 +
> arch/i386/Kconfig | 1 +
> arch/ia64/Kconfig | 1 +
> arch/sparc64/Kconfig | 1 +
> arch/x86_64/Kconfig | 1 +
> drivers/pci/Kconfig | 6 +++++-
> 6 files changed, 10 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index e7baca2..db00376 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -255,6 +255,7 @@ config ARCH_IOP13XX
> depends on MMU
> select PLAT_IOP
> select PCI
> + select ARCH_SUPPORTS_MSI
> help
> Support for Intel's IOP13XX (XScale) family of processors.
>
> diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
> index 53d6237..bcf2fc4 100644
> --- a/arch/i386/Kconfig
> +++ b/arch/i386/Kconfig
> @@ -1073,6 +1073,7 @@ config PCI
> bool "PCI support" if !X86_VISWS
> depends on !X86_VOYAGER
> default y if X86_VISWS
> + select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC)
> help
> Find out whether you have a PCI motherboard. PCI is the name of a
> bus system, i.e. the way the CPU talks to the other stuff inside
> diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
> index e19185d..3b71f97 100644
> --- a/arch/ia64/Kconfig
> +++ b/arch/ia64/Kconfig
> @@ -14,6 +14,7 @@ config IA64
> select PCI if (!IA64_HP_SIM)
> select ACPI if (!IA64_HP_SIM)
> select PM if (!IA64_HP_SIM)
> + select ARCH_SUPPORTS_MSI
> default y
> help
> The Itanium Processor Family is Intel's 64-bit successor to
> diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
> index 1a6348b..b9b2b52 100644
> --- a/arch/sparc64/Kconfig
> +++ b/arch/sparc64/Kconfig
> @@ -299,6 +299,7 @@ config SUN_IO
>
> config PCI
> bool "PCI support"
> + select ARCH_SUPPORTS_MSI
> help
> Find out whether you have a PCI motherboard. PCI is the name of a
> bus system, i.e. the way the CPU talks to the other stuff inside
> diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
> index 56eb14c..e9b4f05 100644
> --- a/arch/x86_64/Kconfig
> +++ b/arch/x86_64/Kconfig
> @@ -676,6 +676,7 @@ menu "Bus options (PCI etc.)"
>
> config PCI
> bool "PCI support"
> + select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC)
>
> # x86-64 doesn't support PCI BIOS access from long mode so always go direct.
> config PCI_DIRECT
> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> index 5ea5bc7..70efe8f 100644
> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -1,10 +1,14 @@
> #
> # PCI configuration
> #
> +config ARCH_SUPPORTS_MSI
> + bool
> + default n
> +
> config PCI_MSI
> bool "Message Signaled Interrupts (MSI and MSI-X)"
> depends on PCI
> - depends on (X86_LOCAL_APIC && X86_IO_APIC) || IA64 || SPARC64
> + depends on ARCH_SUPPORTS_MSI
> help
> This allows device drivers to enable MSI (Message Signaled
> Interrupts). Message Signaled Interrupts enable a device to
--
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
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