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authorAlex Chiang <achiang@hp.com>2009-12-20 12:19:29 -0700
committerLen Brown <len.brown@intel.com>2009-12-22 03:24:13 -0500
commit6c5807d7bc7d051fce00863ffb98d36325501eb2 (patch)
treeeceda659786e5e6ff659fca0b0382ec52ea13871 /arch/x86/include/asm/acpi.h
parent08ea48a326d8030ef5b7fb02292faf5a53c95e0a (diff)
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/asm/acpi.h')
-rw-r--r--arch/x86/include/asm/acpi.h19
1 files changed, 19 insertions, 0 deletions
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