diff options
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/acpi.h | 27 | ||||
| -rw-r--r-- | include/asm-x86/apic_32.h | 1 | ||||
| -rw-r--r-- | include/asm-x86/hpet.h | 1 |
3 files changed, 29 insertions, 0 deletions
diff --git a/include/asm-x86/acpi.h b/include/asm-x86/acpi.h index 0693689d4146..f8a89793ac8c 100644 --- a/include/asm-x86/acpi.h +++ b/include/asm-x86/acpi.h @@ -1,5 +1,32 @@ +#ifndef _ASM_X86_ACPI_H +#define _ASM_X86_ACPI_H + #ifdef CONFIG_X86_32 # include "acpi_32.h" #else # include "acpi_64.h" #endif + +#include <asm/processor.h> + +/* + * Check if the CPU can handle C2 and deeper + */ +static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate) +{ + /* + * Early models (<=5) of AMD Opterons are not supposed to go into + * C2 state. + * + * Steppings 0x0A and later are good + */ + if (boot_cpu_data.x86 == 0x0F && + boot_cpu_data.x86_vendor == X86_VENDOR_AMD && + boot_cpu_data.x86_model <= 0x05 && + boot_cpu_data.x86_mask < 0x0A) + return 1; + else + return max_cstate; +} + +#endif diff --git a/include/asm-x86/apic_32.h b/include/asm-x86/apic_32.h index 4091b33dcb10..be158b27d54b 100644 --- a/include/asm-x86/apic_32.h +++ b/include/asm-x86/apic_32.h @@ -120,6 +120,7 @@ extern int local_apic_timer_disabled; #else /* !CONFIG_X86_LOCAL_APIC */ static inline void lapic_shutdown(void) { } +#define local_apic_timer_c2_ok 1 #endif /* !CONFIG_X86_LOCAL_APIC */ diff --git a/include/asm-x86/hpet.h b/include/asm-x86/hpet.h index b1f3c1ea55d9..ad8d6e758785 100644 --- a/include/asm-x86/hpet.h +++ b/include/asm-x86/hpet.h @@ -61,6 +61,7 @@ extern unsigned long force_hpet_address; extern int hpet_force_user; extern int is_hpet_enabled(void); extern int hpet_enable(void); +extern void hpet_disable(void); extern unsigned long hpet_readl(unsigned long a); extern void force_hpet_resume(void); |