diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-08-25 11:10:42 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-08-25 11:10:42 +0200 |
commit | ea1c9de45ecb162841c9b4e0fa303a245d59b1c8 (patch) | |
tree | 72ef1624d8a4c581ad94a84f38f941682562030b /arch/x86/pci/amd_bus.c | |
parent | 4e1d112cac08049e764fe3c4f6d3ec92529f9f68 (diff) | |
parent | a2bd7274b47124d2fc4dfdb8c0591f545ba749dd (diff) |
Merge branch 'x86/urgent' into x86/cleanups
Diffstat (limited to 'arch/x86/pci/amd_bus.c')
-rw-r--r-- | arch/x86/pci/amd_bus.c | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c index dbf53236971..6a0fca78c36 100644 --- a/arch/x86/pci/amd_bus.c +++ b/arch/x86/pci/amd_bus.c @@ -1,6 +1,7 @@ #include <linux/init.h> #include <linux/pci.h> #include <linux/topology.h> +#include <linux/cpu.h> #include "pci.h" #ifdef CONFIG_X86_64 @@ -555,15 +556,17 @@ static int __init early_fill_mp_bus_info(void) return 0; } -postcore_initcall(early_fill_mp_bus_info); +#else /* !CONFIG_X86_64 */ -#endif +static int __init early_fill_mp_bus_info(void) { return 0; } + +#endif /* !CONFIG_X86_64 */ /* common 32/64 bit code */ #define ENABLE_CF8_EXT_CFG (1ULL << 46) -static void enable_pci_io_ecs_per_cpu(void *unused) +static void enable_pci_io_ecs(void *unused) { u64 reg; rdmsrl(MSR_AMD64_NB_CFG, reg); @@ -573,14 +576,51 @@ static void enable_pci_io_ecs_per_cpu(void *unused) } } -static int __init enable_pci_io_ecs(void) +static int __cpuinit amd_cpu_notify(struct notifier_block *self, + unsigned long action, void *hcpu) { + int cpu = (long)hcpu; + switch(action) { + case CPU_ONLINE: + case CPU_ONLINE_FROZEN: + smp_call_function_single(cpu, enable_pci_io_ecs, NULL, 0); + break; + default: + break; + } + return NOTIFY_OK; +} + +static struct notifier_block __cpuinitdata amd_cpu_notifier = { + .notifier_call = amd_cpu_notify, +}; + +static int __init pci_io_ecs_init(void) +{ + int cpu; + /* 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); + + register_cpu_notifier(&amd_cpu_notifier); + for_each_online_cpu(cpu) + amd_cpu_notify(&amd_cpu_notifier, (unsigned long)CPU_ONLINE, + (void *)(long)cpu); pci_probe |= PCI_HAS_IO_ECS; + + return 0; +} + +static int __init amd_postcore_init(void) +{ + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + return 0; + + early_fill_mp_bus_info(); + pci_io_ecs_init(); + return 0; } -postcore_initcall(enable_pci_io_ecs); +postcore_initcall(amd_postcore_init); |