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Merge branch 'acpi-processor'

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* 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
This commit is contained in:
Rafael J. Wysocki 2014-03-21 16:53:28 +01:00
commit 884411d9a5
4 changed files with 61 additions and 29 deletions
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4
arch/ia64/kernel/acpi.c
View File

@ -54,10 +54,6 @@
#include <asm/sal.h>
#include <asm/cyclone.h>
#define BAD_MADT_ENTRY(entry, end) ( \
(!entry) || (unsigned long)entry + sizeof(*entry) > end || \
((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
#define PREFIX "ACPI: "
unsigned int acpi_cpei_override;

4
arch/x86/kernel/acpi/boot.c
View File

@ -53,10 +53,6 @@ EXPORT_SYMBOL(acpi_disabled);
# include <asm/proto.h>
#endif /* X86 */
#define BAD_MADT_ENTRY(entry, end) ( \
(!entry) || (unsigned long)entry + sizeof(*entry) > end || \
((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
#define PREFIX "ACPI: "
int acpi_noirq; /* skip ACPI IRQ initialization */

78
drivers/acpi/processor_core.c
View File

@ -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);
}

4
include/linux/acpi.h
View File

@ -108,6 +108,10 @@ static inline void acpi_initrd_override(void *data, size_t size)
}
#endif
#define BAD_MADT_ENTRY(entry, end) ( \
(!entry) || (unsigned long)entry + sizeof(*entry) > end || \
((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
void __acpi_unmap_table(char *map, unsigned long size);
int early_acpi_boot_init(void);