Exemple #1
0
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;
}
Exemple #2
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;
}
Exemple #3
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
	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);
	}
Exemple #4
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_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;
}
Exemple #5
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_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;
}
Exemple #6
0
Fichier : bus.c Projet : DVSB/linux
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.
	 */
}
Exemple #7
0
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;

}
Exemple #8
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_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;
}