static int int3400_thermal_run_osc(acpi_handle handle,
enum int3400_thermal_uuid uuid, bool enable)
{
u32 ret, buf[2];
acpi_status status;
int result = 0;
struct acpi_osc_context context = {
.uuid_str = int3400_thermal_uuids[uuid],
.rev = 1,
.cap.length = 8,
};
buf[OSC_QUERY_DWORD] = 0;
buf[OSC_SUPPORT_DWORD] = enable;
context.cap.pointer = buf;
status = acpi_run_osc(handle, &context);
if (ACPI_SUCCESS(status)) {
ret = *((u32 *)(context.ret.pointer + 4));
if (ret != enable)
result = -EPERM;
} else
result = -EPERM;
kfree(context.ret.pointer);
return result;
}
static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
unsigned long *temp)
{
*temp = 20 * 1000; /* faked temp sensor with 20C */
return 0;
}
static acpi_status acpi_pci_run_osc(acpi_handle handle,
const u32 *capbuf, u32 *retval)
{
struct acpi_osc_context context = {
.uuid_str = pci_osc_uuid_str,
.rev = 1,
.cap.length = 12,
.cap.pointer = (void *)capbuf,
};
acpi_status status;
status = acpi_run_osc(handle, &context);
if (ACPI_SUCCESS(status)) {
*retval = *((u32 *)(context.ret.pointer + 8));
kfree(context.ret.pointer);
}
return status;
}
static acpi_status acpi_pci_query_osc(struct acpi_pci_root *root,
u32 support,
u32 *control)
{
acpi_status status;
u32 result, capbuf[3];
support &= OSC_PCI_SUPPORT_MASKS;
support |= root->osc_support_set;
capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_TYPE] = support;
if (control) {
*control &= OSC_PCI_CONTROL_MASKS;
capbuf[OSC_CONTROL_TYPE] = *control | root->osc_control_set;
} else {
/* Run _OSC query only with existing controls. */
capbuf[OSC_CONTROL_TYPE] = root->osc_control_set;
}
status = acpi_pci_run_osc(root->device->handle, capbuf, &result);
if (ACPI_SUCCESS(status)) {
root->osc_support_set = support;
if (control)
*control = result;
}
return status;
}
static void acpi_bus_osc_support(void)
{
u32 capbuf[2];
struct acpi_osc_context context = {
.uuid_str = sb_uuid_str,
.rev = 1,
.cap.length = 8,
.cap.pointer = capbuf,
};
acpi_handle handle;
capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) || \
defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT;
#endif
#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT;
#endif
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return;
if (ACPI_SUCCESS(acpi_run_osc(handle, &context)))
kfree(context.ret.pointer);
/* do we need to check the returned cap? Sounds no */
}
/* --------------------------------------------------------------------------
Event Management
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_PROC_EVENT
static DEFINE_SPINLOCK(acpi_bus_event_lock);
LIST_HEAD(acpi_bus_event_list);
DECLARE_WAIT_QUEUE_HEAD(acpi_bus_event_queue);
extern int event_is_open;
int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data)
{
struct acpi_bus_event *event;
unsigned long flags = 0;
/* drop event on the floor if no one's listening */
if (!event_is_open)
return 0;
event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
if (!event)
return -ENOMEM;
strcpy(event->device_class, device_class);
strcpy(event->bus_id, bus_id);
event->type = type;
event->data = data;
spin_lock_irqsave(&acpi_bus_event_lock, flags);
list_add_tail(&event->node, &acpi_bus_event_list);
spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
wake_up_interruptible(&acpi_bus_event_queue);
return 0;
}
EXPORT_SYMBOL_GPL(acpi_bus_generate_proc_event4);
int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
{
if (!device)
return -EINVAL;
return acpi_bus_generate_proc_event4(device->pnp.device_class,
device->pnp.bus_id, type, data);
}
EXPORT_SYMBOL(acpi_bus_generate_proc_event);
int acpi_bus_receive_event(struct acpi_bus_event *event)
{
unsigned long flags = 0;
struct acpi_bus_event *entry = NULL;
DECLARE_WAITQUEUE(wait, current);
if (!event)
return -EINVAL;
if (list_empty(&acpi_bus_event_list)) {
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&acpi_bus_event_queue, &wait);
if (list_empty(&acpi_bus_event_list))
schedule();
remove_wait_queue(&acpi_bus_event_queue, &wait);
set_current_state(TASK_RUNNING);
if (signal_pending(current))
return -ERESTARTSYS;
}
spin_lock_irqsave(&acpi_bus_event_lock, flags);
if (!list_empty(&acpi_bus_event_list)) {
entry = list_entry(acpi_bus_event_list.next,
struct acpi_bus_event, node);
list_del(&entry->node);
}
static void acpi_bus_osc_support(void)
{
u32 capbuf[2];
struct acpi_osc_context context = {
.uuid_str = sb_uuid_str,
.rev = 1,
.cap.length = 8,
.cap.pointer = capbuf,
};
acpi_handle handle;
capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
if (IS_ENABLED(CONFIG_ACPI_PROCESSOR_AGGREGATOR))
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT;
if (IS_ENABLED(CONFIG_ACPI_PROCESSOR))
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT;
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
if (!ghes_disable)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return;
if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
u32 *capbuf_ret = context.ret.pointer;
if (context.ret.length > OSC_SUPPORT_DWORD)
osc_sb_apei_support_acked =
capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
kfree(context.ret.pointer);
}
/* do we need to check other returned cap? Sounds no */
}
/* --------------------------------------------------------------------------
Notification Handling
-------------------------------------------------------------------------- */
/**
* acpi_bus_notify
* ---------------
* Callback for all 'system-level' device notifications (values 0x00-0x7F).
*/
static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
{
struct acpi_device *adev;
struct acpi_driver *driver;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
bool hotplug_event = false;
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_CHECK:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_WAKE:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n");
break;
case ACPI_NOTIFY_EJECT_REQUEST:
acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n");
/* TBD: Exactly what does 'light' mean? */
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
acpi_handle_err(handle, "Device cannot be configured due "
"to a frequency mismatch\n");
break;
case ACPI_NOTIFY_BUS_MODE_MISMATCH:
acpi_handle_err(handle, "Device cannot be configured due "
"to a bus mode mismatch\n");
break;
case ACPI_NOTIFY_POWER_FAULT:
acpi_handle_err(handle, "Device has suffered a power fault\n");
break;
default:
acpi_handle_debug(handle, "Unknown event type 0x%x\n", type);
break;
}
adev = acpi_bus_get_acpi_device(handle);
if (!adev)
goto err;
driver = adev->driver;
if (driver && driver->ops.notify &&
(driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
driver->ops.notify(adev, type);
if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
return;
acpi_bus_put_acpi_device(adev);
return;
err:
acpi_evaluate_ost(handle, type, ost_code, NULL);
}
static void acpi_device_notify(acpi_handle handle, u32 event, void *data)
{
struct acpi_device *device = data;
device->driver->ops.notify(device, event);
}
static void acpi_device_notify_fixed(void *data)
{
struct acpi_device *device = data;
/* Fixed hardware devices have no handles */
acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device);
}
static u32 acpi_device_fixed_event(void *data)
{
acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data);
return ACPI_INTERRUPT_HANDLED;
}
static void acpi_bus_osc_support(void)
{
u32 capbuf[2];
struct acpi_osc_context context = {
.uuid_str = sb_uuid_str,
.rev = 1,
.cap.length = 8,
.cap.pointer = capbuf,
};
acpi_handle handle;
capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\
defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT;
#endif
#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT;
#endif
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
if (!ghes_disable)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return;
if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
u32 *capbuf_ret = context.ret.pointer;
if (context.ret.length > OSC_SUPPORT_DWORD)
osc_sb_apei_support_acked =
capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
kfree(context.ret.pointer);
}
/* do we need to check other returned cap? Sounds no */
}
/* --------------------------------------------------------------------------
Notification Handling
-------------------------------------------------------------------------- */
/**
* acpi_bus_notify
* ---------------
* Callback for all 'system-level' device notifications (values 0x00-0x7F).
*/
static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
{
struct acpi_device *adev;
struct acpi_driver *driver;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
bool hotplug_event = false;
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_CHECK:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_WAKE:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n");
break;
case ACPI_NOTIFY_EJECT_REQUEST:
acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n");
/* TBD: Exactly what does 'light' mean? */
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
acpi_handle_err(handle, "Device cannot be configured due "
"to a frequency mismatch\n");
break;
case ACPI_NOTIFY_BUS_MODE_MISMATCH:
acpi_handle_err(handle, "Device cannot be configured due "
"to a bus mode mismatch\n");
break;
case ACPI_NOTIFY_POWER_FAULT:
acpi_handle_err(handle, "Device has suffered a power fault\n");
break;
default:
acpi_handle_debug(handle, "Unknown event type 0x%x\n", type);
break;
}
adev = acpi_bus_get_acpi_device(handle);
if (!adev)
goto err;
driver = adev->driver;
if (driver && driver->ops.notify &&
(driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
driver->ops.notify(adev, type);
if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
return;
acpi_bus_put_acpi_device(adev);
return;
err:
acpi_evaluate_ost(handle, type, ost_code, NULL);
}
/* --------------------------------------------------------------------------
Initialization/Cleanup
-------------------------------------------------------------------------- */
static int __init acpi_bus_init_irq(void)
{
acpi_status status;
char *message = NULL;
/*
* Let the system know what interrupt model we are using by
* evaluating the \_PIC object, if exists.
*/
switch (acpi_irq_model) {
case ACPI_IRQ_MODEL_PIC:
message = "PIC";
break;
case ACPI_IRQ_MODEL_IOAPIC:
message = "IOAPIC";
break;
case ACPI_IRQ_MODEL_IOSAPIC:
message = "IOSAPIC";
break;
case ACPI_IRQ_MODEL_PLATFORM:
message = "platform specific model";
break;
default:
printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
return -ENODEV;
}
printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
return -ENODEV;
}
return 0;
}
static void acpi_bus_osc_support(void)
{
u32 capbuf[2];
struct acpi_osc_context context = {
.uuid_str = sb_uuid_str,
.rev = 1,
.cap.length = 8,
.cap.pointer = capbuf,
};
acpi_handle handle;
capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\
defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT;
#endif
#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT;
#endif
#ifdef ACPI_HOTPLUG_OST
capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_HOTPLUG_OST_SUPPORT;
#endif
if (!ghes_disable)
capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_APEI_SUPPORT;
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return;
if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
u32 *capbuf_ret = context.ret.pointer;
if (context.ret.length > OSC_SUPPORT_TYPE)
osc_sb_apei_support_acked =
capbuf_ret[OSC_SUPPORT_TYPE] & OSC_SB_APEI_SUPPORT;
kfree(context.ret.pointer);
}
/* do we need to check other returned cap? Sounds no */
}
/* --------------------------------------------------------------------------
Notification Handling
-------------------------------------------------------------------------- */
static void acpi_bus_check_device(acpi_handle handle)
{
struct acpi_device *device;
acpi_status status;
struct acpi_device_status old_status;
if (acpi_bus_get_device(handle, &device))
return;
if (!device)
return;
old_status = device->status;
/*
* Make sure this device's parent is present before we go about
* messing with the device.
*/
if (device->parent && !device->parent->status.present) {
device->status = device->parent->status;
return;
}
status = acpi_bus_get_status(device);
if (ACPI_FAILURE(status))
return;
if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
return;
/*
* Device Insertion/Removal
*/
if ((device->status.present) && !(old_status.present)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n"));
/* TBD: Handle device insertion */
} else if (!(device->status.present) && (old_status.present)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n"));
/* TBD: Handle device removal */
}
}
static void acpi_bus_check_scope(acpi_handle handle)
{
/* Status Change? */
acpi_bus_check_device(handle);
/*
* TBD: Enumerate child devices within this device's scope and
* run acpi_bus_check_device()'s on them.
*/
}
static acpi_status __init acpi_hwp_native_thermal_lvt_osc(acpi_handle handle,
u32 lvl,
void *context,
void **rv)
{
u8 sb_uuid_str[] = "4077A616-290C-47BE-9EBD-D87058713953";
u32 capbuf[2];
struct acpi_osc_context osc_context = {
.uuid_str = sb_uuid_str,
.rev = 1,
.cap.length = 8,
.cap.pointer = capbuf,
};
if (acpi_hwp_native_thermal_lvt_set)
return AE_CTRL_TERMINATE;
capbuf[0] = 0x0000;
capbuf[1] = 0x1000; /* set bit 12 */
if (ACPI_SUCCESS(acpi_run_osc(handle, &osc_context))) {
if (osc_context.ret.pointer && osc_context.ret.length > 1) {
u32 *capbuf_ret = osc_context.ret.pointer;
if (capbuf_ret[1] & 0x1000) {
acpi_handle_info(handle,
"_OSC native thermal LVT Acked\n");
acpi_hwp_native_thermal_lvt_set = true;
}
}
kfree(osc_context.ret.pointer);
}
return AE_OK;
}
void __init acpi_early_processor_osc(void)
{
if (boot_cpu_has(X86_FEATURE_HWP)) {
acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
acpi_hwp_native_thermal_lvt_osc,
NULL, NULL, NULL);
acpi_get_devices(ACPI_PROCESSOR_DEVICE_HID,
acpi_hwp_native_thermal_lvt_osc,
NULL, NULL);
}
}
#endif
/*
* The following ACPI IDs are known to be suitable for representing as
* processor devices.
*/
static const struct acpi_device_id processor_device_ids[] = {
{ ACPI_PROCESSOR_OBJECT_HID, },
{ ACPI_PROCESSOR_DEVICE_HID, },
{ }
};
static struct acpi_scan_handler processor_handler = {
.ids = processor_device_ids,
.attach = acpi_processor_add,
#ifdef CONFIG_ACPI_HOTPLUG_CPU
.detach = acpi_processor_remove,
#endif
.hotplug = {
.enabled = true,
},
};
static int acpi_processor_container_attach(struct acpi_device *dev,
const struct acpi_device_id *id)
{
return 1;
}
static const struct acpi_device_id processor_container_ids[] = {
{ ACPI_PROCESSOR_CONTAINER_HID, },
{ }
};
static struct acpi_scan_handler processor_container_handler = {
.ids = processor_container_ids,
.attach = acpi_processor_container_attach,
};
/* The number of the unique processor IDs */
static int nr_unique_ids __initdata;
/* The number of the duplicate processor IDs */
static int nr_duplicate_ids;
/* Used to store the unique processor IDs */
static int unique_processor_ids[] __initdata = {
[0 ... NR_CPUS - 1] = -1,
};
/* Used to store the duplicate processor IDs */
static int duplicate_processor_ids[] = {
[0 ... NR_CPUS - 1] = -1,
};
static void __init processor_validated_ids_update(int proc_id)
{
int i;
if (nr_unique_ids == NR_CPUS||nr_duplicate_ids == NR_CPUS)
return;
/*
* Firstly, compare the proc_id with duplicate IDs, if the proc_id is
* already in the IDs, do nothing.
*/
for (i = 0; i < nr_duplicate_ids; i++) {
if (duplicate_processor_ids[i] == proc_id)
return;
}
/*
* Secondly, compare the proc_id with unique IDs, if the proc_id is in
* the IDs, put it in the duplicate IDs.
*/
for (i = 0; i < nr_unique_ids; i++) {
if (unique_processor_ids[i] == proc_id) {
duplicate_processor_ids[nr_duplicate_ids] = proc_id;
nr_duplicate_ids++;
return;
}
}
/*
* Lastly, the proc_id is a unique ID, put it in the unique IDs.
*/
unique_processor_ids[nr_unique_ids] = proc_id;
nr_unique_ids++;
}
static acpi_status __init acpi_processor_ids_walk(acpi_handle handle,
u32 lvl,
void *context,
void **rv)
{
acpi_status status;
acpi_object_type acpi_type;
unsigned long long uid;
union acpi_object object = { 0 };
struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
status = acpi_get_type(handle, &acpi_type);
if (ACPI_FAILURE(status))
return status;
switch (acpi_type) {
case ACPI_TYPE_PROCESSOR:
status = acpi_evaluate_object(handle, NULL, NULL, &buffer);
if (ACPI_FAILURE(status))
goto err;
uid = object.processor.proc_id;
break;
case ACPI_TYPE_DEVICE:
status = acpi_evaluate_integer(handle, "_UID", NULL, &uid);
if (ACPI_FAILURE(status))
goto err;
break;
default:
goto err;
}
processor_validated_ids_update(uid);
return AE_OK;
err:
/* Exit on error, but don't abort the namespace walk */
acpi_handle_info(handle, "Invalid processor object\n");
return AE_OK;
}
static void acpi_bus_osc_support(void)
{
u32 capbuf[2];
struct acpi_osc_context context = {
.uuid_str = sb_uuid_str,
.rev = 1,
.cap.length = 8,
.cap.pointer = capbuf,
};
acpi_handle handle;
capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\
defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT;
#endif
#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT;
#endif
#ifdef ACPI_HOTPLUG_OST
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
#endif
if (!ghes_disable)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return;
if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
u32 *capbuf_ret = context.ret.pointer;
if (context.ret.length > OSC_SUPPORT_DWORD)
osc_sb_apei_support_acked =
capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
kfree(context.ret.pointer);
}
/* do we need to check other returned cap? Sounds no */
}
/* --------------------------------------------------------------------------
Notification Handling
-------------------------------------------------------------------------- */
/**
* acpi_bus_notify
* ---------------
* Callback for all 'system-level' device notifications (values 0x00-0x7F).
*/
static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
{
struct acpi_device *device = NULL;
struct acpi_driver *driver;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
type, handle));
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
/* TBD */
break;
case ACPI_NOTIFY_DEVICE_CHECK:
/* TBD */
break;
case ACPI_NOTIFY_DEVICE_WAKE:
/* TBD */
break;
case ACPI_NOTIFY_EJECT_REQUEST:
/* TBD */
break;
case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
/* TBD: Exactly what does 'light' mean? */
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
/* TBD */
break;
case ACPI_NOTIFY_BUS_MODE_MISMATCH:
/* TBD */
break;
case ACPI_NOTIFY_POWER_FAULT:
/* TBD */
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Received unknown/unsupported notification [%08x]\n",
type));
break;
}
acpi_bus_get_device(handle, &device);
if (device) {
driver = device->driver;
if (driver && driver->ops.notify &&
(driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
driver->ops.notify(device, type);
}
}
/* --------------------------------------------------------------------------
Initialization/Cleanup
-------------------------------------------------------------------------- */
static int __init acpi_bus_init_irq(void)
{
acpi_status status;
char *message = NULL;
/*
* Let the system know what interrupt model we are using by
* evaluating the \_PIC object, if exists.
*/
switch (acpi_irq_model) {
case ACPI_IRQ_MODEL_PIC:
message = "PIC";
break;
case ACPI_IRQ_MODEL_IOAPIC:
message = "IOAPIC";
break;
case ACPI_IRQ_MODEL_IOSAPIC:
message = "IOSAPIC";
break;
case ACPI_IRQ_MODEL_PLATFORM:
message = "platform specific model";
break;
default:
printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
return -ENODEV;
}
printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
return -ENODEV;
}
return 0;
}