diff options
| author | Alex Chiang <achiang@hp.com> | 2009-12-20 20:19:29 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-12-22 09:24:13 +0100 |
| commit | 6c5807d7bc7d051fce00863ffb98d36325501eb2 (patch) | |
| tree | eceda659786e5e6ff659fca0b0382ec52ea13871 /arch/x86/include | |
| parent | ACPI: processor: factor out common _PDC settings (diff) | |
| download | linux-6c5807d7bc7d051fce00863ffb98d36325501eb2.tar.xz linux-6c5807d7bc7d051fce00863ffb98d36325501eb2.zip | |
ACPI: processor: finish unifying arch_acpi_processor_init_pdc()
The only thing arch-specific about calling _PDC is what bits get
set in the input obj_list buffer.
There's no need for several levels of indirection to twiddle those
bits. Additionally, since we're just messing around with a buffer,
we can simplify the interface; no need to pass around the entire
struct acpi_processor * just to get at the buffer.
Cc: Tony Luck <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/acpi.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index d787e6e92bd1..56f462cf22d2 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -149,6 +149,25 @@ static inline bool arch_has_acpi_pdc(void) 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 |