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| author | Robert Richter <robert.richter@amd.com> | 2007-09-03 10:17:39 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-02 11:51:19 +0200 |
| commit | 831d991821daedd4839073dbca55514432ef1768 (patch) | |
| tree | f3b9772709fd948c5df7b3e0535d9f62737e7702 /arch/x86/kernel/cpu/amd.c | |
| parent | 1c47cd638e8302bc38be1f6d81067950e038ebd3 (diff) | |
| download | lwn-831d991821daedd4839073dbca55514432ef1768.tar.gz lwn-831d991821daedd4839073dbca55514432ef1768.zip | |
x86: add PCI extended config space access for AMD Barcelona
This patch implements PCI extended configuration space access for
AMD's Barcelona CPUs. It extends the method using CF8/CFC IO
addresses. An x86 capability bit has been introduced that is set for
CPUs supporting PCI extended config space accesses.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/amd.c')
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 245866828294..99221f9834e4 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -6,6 +6,7 @@ #include <asm/apic.h> #include <mach_apic.h> +#include "../setup.h" #include "cpu.h" /* @@ -308,6 +309,9 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) if (cpu_has_xmm2) set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC); + + if (c->x86 == 0x10) + amd_enable_pci_ext_cfg(c); } static unsigned int __cpuinit amd_size_cache(struct cpuinfo_x86 *c, unsigned int size) |