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authorAlex Chiang <achiang@hp.com>2009-12-20 12:19:24 -0700
committerLen Brown <len.brown@intel.com>2009-12-22 03:24:12 -0500
commit08ea48a326d8030ef5b7fb02292faf5a53c95e0a (patch)
treec0f9dd9001c50925fc85b18b5f2afc24000d90f6 /drivers/acpi
parent407cd87c54e76c266245e8faef8dd4a84b7254fe (diff)
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ACPI: processor: factor out common _PDC settings
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>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/processor_pdc.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c
index 87946b6..ccda7c9 100644
--- a/drivers/acpi/processor_pdc.c
+++ b/drivers/acpi/processor_pdc.c
@@ -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;