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| author | Robert Richter <robert.richter@amd.com> | 2008-06-12 20:19:23 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 07:47:39 +0200 |
| commit | 3a27dd1ce5de08e21e0266ddf00e6f1f843bfe8b (patch) | |
| tree | b72316cfbe10d1f955a0cb9553879fb2bb14344b /arch/x86/pci/amd_bus.c | |
| parent | x86/pci: Renaming k8-bus_64.c to amd_bus.c (diff) | |
| download | linux-3a27dd1ce5de08e21e0266ddf00e6f1f843bfe8b.tar.xz linux-3a27dd1ce5de08e21e0266ddf00e6f1f843bfe8b.zip | |
x86: Move PCI IO ECS code to x86/pci
"Form follows function". Code is now where it belongs to.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/pci/amd_bus.c')
| -rw-r--r-- | arch/x86/pci/amd_bus.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c index 5c2799c20e47..15f505d3a78e 100644 --- a/arch/x86/pci/amd_bus.c +++ b/arch/x86/pci/amd_bus.c @@ -1,5 +1,9 @@ #include <linux/init.h> #include <linux/pci.h> +#include "pci.h" + +#ifdef CONFIG_X86_64 + #include <asm/pci-direct.h> #include <asm/mpspec.h> #include <linux/cpumask.h> @@ -526,3 +530,31 @@ static int __init early_fill_mp_bus_info(void) } postcore_initcall(early_fill_mp_bus_info); + +#endif + +/* common 32/64 bit code */ + +#define ENABLE_CF8_EXT_CFG (1ULL << 46) + +static void enable_pci_io_ecs_per_cpu(void *unused) +{ + u64 reg; + rdmsrl(MSR_AMD64_NB_CFG, reg); + if (!(reg & ENABLE_CF8_EXT_CFG)) { + reg |= ENABLE_CF8_EXT_CFG; + wrmsrl(MSR_AMD64_NB_CFG, reg); + } +} + +static int __init enable_pci_io_ecs(void) +{ + /* assume all cpus from fam10h have IO ECS */ + if (boot_cpu_data.x86 < 0x10) + return 0; + on_each_cpu(enable_pci_io_ecs_per_cpu, NULL, 1, 1); + pci_probe |= PCI_HAS_IO_ECS; + return 0; +} + +postcore_initcall(enable_pci_io_ecs); |