diff options
| author | Len Brown <len.brown@intel.com> | 2009-12-24 01:17:21 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-12-24 01:17:21 -0500 |
| commit | da3df858c88f7bb420f2517ee9aab238da2e6ed7 (patch) | |
| tree | 49c9e69818d7a7fc59ebda96dc7abf17a0f3b088 /arch/x86/include | |
| parent | 309ddc53be1766d6ed5411a3dc1782c2040198fa (diff) | |
| parent | e59897fe443b5b0a71e135ef4020d1937c9f8901 (diff) | |
Merge branch 'pdc' into release
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/acpi.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index 60d2b2db0bc5..56f462cf22d2 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -142,6 +142,32 @@ static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate) return max_cstate; } +static inline bool arch_has_acpi_pdc(void) +{ + struct cpuinfo_x86 *c = &cpu_data(0); + return (c->x86_vendor == X86_VENDOR_INTEL || + c->x86_vendor == X86_VENDOR_CENTAUR); +} + +static inline void arch_acpi_set_pdc_bits(u32 *buf) +{ + struct cpuinfo_x86 *c = &cpu_data(0); + + buf[2] |= ACPI_PDC_C_CAPABILITY_SMP; + + if (cpu_has(c, X86_FEATURE_EST)) + buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP; + + if (cpu_has(c, X86_FEATURE_ACPI)) + buf[2] |= ACPI_PDC_T_FFH; + + /* + * If mwait/monitor is unsupported, C2/C3_FFH will be disabled + */ + if (!cpu_has(c, X86_FEATURE_MWAIT)) + buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); +} + #else /* !CONFIG_ACPI */ #define acpi_lapic 0 |