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ACPI: processor: factor out common _PDC settings

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Both x86 and ia64 initialize _PDC with mostly common bit settings.

Factor out the common settings and leave the arch-specific ones alone.

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>
This commit is contained in:
Alex Chiang 2009-12-20 12:19:24 -07:00 committed by Len Brown
parent 407cd87c54
commit 08ea48a326
3 changed files with 13 additions and 18 deletions
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10
arch/ia64/kernel/acpi-processor.c
View File

@ -18,15 +18,7 @@ static void init_intel_pdc(struct acpi_processor *pr)
{
u32 *buf = (u32 *)pr->pdc->pointer->buffer.pointer;
buf[0] = ACPI_PDC_REVISION_ID;
buf[1] = 1;
buf[2] = ACPI_PDC_EST_CAPABILITY_SMP;
/*
* The default of PDC_SMP_T_SWCOORD bit is set for IA64 cpu so
* that OSPM is capable of native ACPI throttling software
* coordination using BIOS supplied _TSD info.
*/
buf[2] |= ACPI_PDC_SMP_T_SWCOORD;
buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
return;
}

10
arch/x86/kernel/acpi/processor.c
View File

@ -16,16 +16,8 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
{
u32 *buf = (u32 *)pr->pdc->pointer->buffer.pointer;
buf[0] = ACPI_PDC_REVISION_ID;
buf[1] = 1;
buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
/*
* The default of PDC_SMP_T_SWCOORD bit is set for intel x86 cpu so
* that OSPM is capable of native ACPI throttling software
* coordination using BIOS supplied _TSD info.
*/
buf[2] |= ACPI_PDC_SMP_T_SWCOORD;
if (cpu_has(c, X86_FEATURE_EST))
buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;

11
drivers/acpi/processor_pdc.c
View File

@ -33,6 +33,15 @@ static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = {
{},
};
static void acpi_set_pdc_bits(u32 *buf)
{
buf[0] = ACPI_PDC_REVISION_ID;
buf[1] = 1;
/* Enable coordination with firmware's _TSD info */
buf[2] = ACPI_PDC_SMP_T_SWCOORD;
}
static void acpi_processor_init_pdc(struct acpi_processor *pr)
{
struct acpi_object_list *obj_list;
@ -63,6 +72,8 @@ static void acpi_processor_init_pdc(struct acpi_processor *pr)
return;
}
acpi_set_pdc_bits(buf);
obj->type = ACPI_TYPE_BUFFER;
obj->buffer.length = 12;
obj->buffer.pointer = (u8 *) buf;