From 6c5807d7bc7d051fce00863ffb98d36325501eb2 Mon Sep 17 00:00:00 2001 From: Alex Chiang Date: Sun, 20 Dec 2009 12:19:29 -0700 Subject: 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 Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Signed-off-by: Alex Chiang Signed-off-by: Len Brown --- arch/x86/include/asm/acpi.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'arch/x86/include/asm/acpi.h') diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index d787e6e92bd..56f462cf22d 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 -- cgit v1.2.3-70-g09d2