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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-03-21 16:53:28 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-03-21 16:53:28 +0100
commit884411d9a580814910bc21dc08e2495efc4b1491 (patch)
tree2201bf0c3d2b14f7e6505001300604e6a0164b5c /drivers/acpi/processor_core.c
parent5a2d853ffcf961d6b7d491858946878676aeae3e (diff)
parent38953d3945aedf8e198b75ff09b22e369f14566f (diff)
Merge branch 'acpi-processor'
* acpi-processor: ACPI: Move BAD_MADT_ENTRY() to linux/acpi.h ACPI / processor: Make it possible to get APIC ID via GIC ACPI / processor: Build idle_boot_override on x86 and ia64 ACPI / processor: Use ACPI_PROCESSOR_DEVICE_HID instead of "ACPI0007" ACPI / processor: Fix acpi_processor_eval_pdc() return value type
Diffstat (limited to 'drivers/acpi/processor_core.c')
-rw-r--r--drivers/acpi/processor_core.c78
1 files changed, 57 insertions, 21 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 57e0769656c6..86d73d5d503f 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -18,24 +18,6 @@
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_core");
-static int __init set_no_mwait(const struct dmi_system_id *id)
-{
- printk(KERN_NOTICE PREFIX "%s detected - "
- "disabling mwait for CPU C-states\n", id->ident);
- boot_option_idle_override = IDLE_NOMWAIT;
- return 0;
-}
-
-static struct dmi_system_id processor_idle_dmi_table[] __initdata = {
- {
- set_no_mwait, "Extensa 5220", {
- DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
- DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
- DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
- {},
-};
-
static int map_lapic_id(struct acpi_subtable_header *entry,
u32 acpi_id, int *apic_id)
{
@@ -88,6 +70,28 @@ static int map_lsapic_id(struct acpi_subtable_header *entry,
return 0;
}
+static int map_gic_id(struct acpi_subtable_header *entry,
+ int device_declaration, u32 acpi_id, int *apic_id)
+{
+ struct acpi_madt_generic_interrupt *gic =
+ (struct acpi_madt_generic_interrupt *)entry;
+
+ if (!(gic->flags & ACPI_MADT_ENABLED))
+ return -ENODEV;
+
+ /*
+ * In the GIC interrupt model, logical processors are
+ * required to have a Processor Device object in the DSDT,
+ * so we should check device_declaration here
+ */
+ if (device_declaration && (gic->uid == acpi_id)) {
+ *apic_id = gic->gic_id;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
static int map_madt_entry(int type, u32 acpi_id)
{
unsigned long madt_end, entry;
@@ -123,6 +127,9 @@ static int map_madt_entry(int type, u32 acpi_id)
} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
if (!map_lsapic_id(header, type, acpi_id, &apic_id))
break;
+ } else if (header->type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) {
+ if (!map_gic_id(header, type, acpi_id, &apic_id))
+ break;
}
entry += header->length;
}
@@ -153,6 +160,8 @@ static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id)
map_lapic_id(header, acpi_id, &apic_id);
} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
map_lsapic_id(header, type, acpi_id, &apic_id);
+ } else if (header->type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) {
+ map_gic_id(header, type, acpi_id, &apic_id);
}
exit:
@@ -322,7 +331,7 @@ static struct acpi_object_list *acpi_processor_alloc_pdc(void)
* _PDC is required for a BIOS-OS handshake for most of the newer
* ACPI processor features.
*/
-static int
+static acpi_status
acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in)
{
acpi_status status = AE_OK;
@@ -378,16 +387,43 @@ early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv)
return AE_OK;
}
-void __init acpi_early_processor_set_pdc(void)
+#if defined(CONFIG_X86) || defined(CONFIG_IA64)
+static int __init set_no_mwait(const struct dmi_system_id *id)
+{
+ pr_notice(PREFIX "%s detected - disabling mwait for CPU C-states\n",
+ id->ident);
+ boot_option_idle_override = IDLE_NOMWAIT;
+ return 0;
+}
+
+static struct dmi_system_id processor_idle_dmi_table[] __initdata = {
+ {
+ set_no_mwait, "Extensa 5220", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
+ DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
+ {},
+};
+
+static void __init processor_dmi_check(void)
{
/*
* Check whether the system is DMI table. If yes, OSPM
* should not use mwait for CPU-states.
*/
dmi_check_system(processor_idle_dmi_table);
+}
+#else
+static inline void processor_dmi_check(void) {}
+#endif
+
+void __init acpi_early_processor_set_pdc(void)
+{
+ processor_dmi_check();
acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
early_init_pdc, NULL, NULL, NULL);
- acpi_get_devices("ACPI0007", early_init_pdc, NULL, NULL);
+ acpi_get_devices(ACPI_PROCESSOR_DEVICE_HID, early_init_pdc, NULL, NULL);
}