[net-next-2.6.git] / drivers / acpi / sysfs.c

/*
 * sysfs.c - ACPI sysfs interface to userspace.
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include <acpi/acpi_drivers.h>

#define _COMPONENT		ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME("sysfs");

#define PREFIX "ACPI: "

#ifdef CONFIG_ACPI_DEBUG
/*
 * ACPI debug sysfs I/F, including:
 * /sys/modules/acpi/parameters/debug_layer
 * /sys/modules/acpi/parameters/debug_level
 * /sys/modules/acpi/parameters/trace_method_name
 * /sys/modules/acpi/parameters/trace_state
 * /sys/modules/acpi/parameters/trace_debug_layer
 * /sys/modules/acpi/parameters/trace_debug_level
 */

struct acpi_dlayer {
	const char *name;
	unsigned long value;
};
struct acpi_dlevel {
	const char *name;
	unsigned long value;
};
#define ACPI_DEBUG_INIT(v)	{ .name = #v, .value = v }

static const struct acpi_dlayer acpi_debug_layers[] = {
	ACPI_DEBUG_INIT(ACPI_UTILITIES),
	ACPI_DEBUG_INIT(ACPI_HARDWARE),
	ACPI_DEBUG_INIT(ACPI_EVENTS),
	ACPI_DEBUG_INIT(ACPI_TABLES),
	ACPI_DEBUG_INIT(ACPI_NAMESPACE),
	ACPI_DEBUG_INIT(ACPI_PARSER),
	ACPI_DEBUG_INIT(ACPI_DISPATCHER),
	ACPI_DEBUG_INIT(ACPI_EXECUTER),
	ACPI_DEBUG_INIT(ACPI_RESOURCES),
	ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
	ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
	ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
	ACPI_DEBUG_INIT(ACPI_COMPILER),
	ACPI_DEBUG_INIT(ACPI_TOOLS),

	ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
	ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
};

static const struct acpi_dlevel acpi_debug_levels[] = {
	ACPI_DEBUG_INIT(ACPI_LV_INIT),
	ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
	ACPI_DEBUG_INIT(ACPI_LV_INFO),

	ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
	ACPI_DEBUG_INIT(ACPI_LV_PARSE),
	ACPI_DEBUG_INIT(ACPI_LV_LOAD),
	ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
	ACPI_DEBUG_INIT(ACPI_LV_EXEC),
	ACPI_DEBUG_INIT(ACPI_LV_NAMES),
	ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
	ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
	ACPI_DEBUG_INIT(ACPI_LV_TABLES),
	ACPI_DEBUG_INIT(ACPI_LV_VALUES),
	ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
	ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
	ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
	ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),

	ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
	ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
	ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),

	ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
	ACPI_DEBUG_INIT(ACPI_LV_THREADS),
	ACPI_DEBUG_INIT(ACPI_LV_IO),
	ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),

	ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
	ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
	ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
	ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
};

static int param_get_debug_layer(char *buffer, struct kernel_param *kp)
{
	int result = 0;
	int i;

	result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");

	for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
		result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
				  acpi_debug_layers[i].name,
				  acpi_debug_layers[i].value,
				  (acpi_dbg_layer & acpi_debug_layers[i].value)
				  ? '*' : ' ');
	}
	result +=
	    sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
		    ACPI_ALL_DRIVERS,
		    (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
		    ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
		    == 0 ? ' ' : '-');
	result +=
	    sprintf(buffer + result,
		    "--\ndebug_layer = 0x%08X ( * = enabled)\n",
		    acpi_dbg_layer);

	return result;
}

static int param_get_debug_level(char *buffer, struct kernel_param *kp)
{
	int result = 0;
	int i;

	result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");

	for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
		result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
				  acpi_debug_levels[i].name,
				  acpi_debug_levels[i].value,
				  (acpi_dbg_level & acpi_debug_levels[i].value)
				  ? '*' : ' ');
	}
	result +=
	    sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
		    acpi_dbg_level);

	return result;
}

module_param_call(debug_layer, param_set_uint, param_get_debug_layer,
		  &acpi_dbg_layer, 0644);
module_param_call(debug_level, param_set_uint, param_get_debug_level,
		  &acpi_dbg_level, 0644);

static char trace_method_name[6];
module_param_string(trace_method_name, trace_method_name, 6, 0644);
static unsigned int trace_debug_layer;
module_param(trace_debug_layer, uint, 0644);
static unsigned int trace_debug_level;
module_param(trace_debug_level, uint, 0644);

static int param_set_trace_state(const char *val, struct kernel_param *kp)
{
	int result = 0;

	if (!strncmp(val, "enable", strlen("enable") - 1)) {
		result = acpi_debug_trace(trace_method_name, trace_debug_level,
					  trace_debug_layer, 0);
		if (result)
			result = -EBUSY;
		goto exit;
	}

	if (!strncmp(val, "disable", strlen("disable") - 1)) {
		int name = 0;
		result = acpi_debug_trace((char *)&name, trace_debug_level,
					  trace_debug_layer, 0);
		if (result)
			result = -EBUSY;
		goto exit;
	}

	if (!strncmp(val, "1", 1)) {
		result = acpi_debug_trace(trace_method_name, trace_debug_level,
					  trace_debug_layer, 1);
		if (result)
			result = -EBUSY;
		goto exit;
	}

	result = -EINVAL;
exit:
	return result;
}

static int param_get_trace_state(char *buffer, struct kernel_param *kp)
{
	if (!acpi_gbl_trace_method_name)
		return sprintf(buffer, "disable");
	else {
		if (acpi_gbl_trace_flags & 1)
			return sprintf(buffer, "1");
		else
			return sprintf(buffer, "enable");
	}
	return 0;
}

module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
		  NULL, 0644);
#endif /* CONFIG_ACPI_DEBUG */

/* /sys/module/acpi/parameters/acpica_version */
static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
{
	int result;

	result = sprintf(buffer, "%x", ACPI_CA_VERSION);

	return result;
}

module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);

/*
 * ACPI table sysfs I/F:
 * /sys/firmware/acpi/tables/
 * /sys/firmware/acpi/tables/dynamic/
 */

static LIST_HEAD(acpi_table_attr_list);
static struct kobject *tables_kobj;
static struct kobject *dynamic_tables_kobj;

struct acpi_table_attr {
	struct bin_attribute attr;
	char name[8];
	int instance;
	struct list_head node;
};

static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
			       struct bin_attribute *bin_attr, char *buf,
			       loff_t offset, size_t count)
{
	struct acpi_table_attr *table_attr =
	    container_of(bin_attr, struct acpi_table_attr, attr);
	struct acpi_table_header *table_header = NULL;
	acpi_status status;
	char name[ACPI_NAME_SIZE];

	if (strncmp(table_attr->name, "NULL", 4))
		memcpy(name, table_attr->name, ACPI_NAME_SIZE);
	else
		memcpy(name, "\0\0\0\0", 4);

	status = acpi_get_table(name, table_attr->instance, &table_header);
	if (ACPI_FAILURE(status))
		return -ENODEV;

	return memory_read_from_buffer(buf, count, &offset,
				       table_header, table_header->length);
}

static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
				 struct acpi_table_header *table_header)
{
	struct acpi_table_header *header = NULL;
	struct acpi_table_attr *attr = NULL;

	sysfs_attr_init(&table_attr->attr.attr);
	if (table_header->signature[0] != '\0')
		memcpy(table_attr->name, table_header->signature,
		       ACPI_NAME_SIZE);
	else
		memcpy(table_attr->name, "NULL", 4);

	list_for_each_entry(attr, &acpi_table_attr_list, node) {
		if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
			if (table_attr->instance < attr->instance)
				table_attr->instance = attr->instance;
	}
	table_attr->instance++;

	if (table_attr->instance > 1 || (table_attr->instance == 1 &&
					 !acpi_get_table
					 (table_header->signature, 2, &header)))
		sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
			table_attr->instance);

	table_attr->attr.size = 0;
	table_attr->attr.read = acpi_table_show;
	table_attr->attr.attr.name = table_attr->name;
	table_attr->attr.attr.mode = 0400;

	return;
}

static acpi_status
acpi_sysfs_table_handler(u32 event, void *table, void *context)
{
	struct acpi_table_attr *table_attr;

	switch (event) {
	case ACPI_TABLE_EVENT_LOAD:
		table_attr =
		    kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
		if (!table_attr)
			return AE_NO_MEMORY;

		acpi_table_attr_init(table_attr, table);
		if (sysfs_create_bin_file(dynamic_tables_kobj,
					  &table_attr->attr)) {
			kfree(table_attr);
			return AE_ERROR;
		} else
			list_add_tail(&table_attr->node, &acpi_table_attr_list);
		break;
	case ACPI_TABLE_EVENT_UNLOAD:
		/*
		 * we do not need to do anything right now
		 * because the table is not deleted from the
		 * global table list when unloading it.
		 */
		break;
	default:
		return AE_BAD_PARAMETER;
	}
	return AE_OK;
}

static int acpi_tables_sysfs_init(void)
{
	struct acpi_table_attr *table_attr;
	struct acpi_table_header *table_header = NULL;
	int table_index = 0;
	int result;

	tables_kobj = kobject_create_and_add("tables", acpi_kobj);
	if (!tables_kobj)
		goto err;

	dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
	if (!dynamic_tables_kobj)
		goto err_dynamic_tables;

	do {
		result = acpi_get_table_by_index(table_index, &table_header);
		if (!result) {
			table_index++;
			table_attr = NULL;
			table_attr =
			    kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
			if (!table_attr)
				return -ENOMEM;

			acpi_table_attr_init(table_attr, table_header);
			result =
			    sysfs_create_bin_file(tables_kobj,
						  &table_attr->attr);
			if (result) {
				kfree(table_attr);
				return result;
			} else
				list_add_tail(&table_attr->node,
					      &acpi_table_attr_list);
		}
	} while (!result);
	kobject_uevent(tables_kobj, KOBJ_ADD);
	kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
	result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);

	return result == AE_OK ? 0 : -EINVAL;
err_dynamic_tables:
	kobject_put(tables_kobj);
err:
	return -ENOMEM;
}

/*
 * Detailed ACPI IRQ counters:
 * /sys/firmware/acpi/interrupts/
 */

u32 acpi_irq_handled;
u32 acpi_irq_not_handled;

#define COUNT_GPE 0
#define COUNT_SCI 1		/* acpi_irq_handled */
#define COUNT_SCI_NOT 2		/* acpi_irq_not_handled */
#define COUNT_ERROR 3		/* other */
#define NUM_COUNTERS_EXTRA 4

struct event_counter {
	u32 count;
	u32 flags;
};

static struct event_counter *all_counters;
static u32 num_gpes;
static u32 num_counters;
static struct attribute **all_attrs;
static u32 acpi_gpe_count;

static struct attribute_group interrupt_stats_attr_group = {
	.name = "interrupts",
};

static struct kobj_attribute *counter_attrs;

static void delete_gpe_attr_array(void)
{
	struct event_counter *tmp = all_counters;

	all_counters = NULL;
	kfree(tmp);

	if (counter_attrs) {
		int i;

		for (i = 0; i < num_gpes; i++)
			kfree(counter_attrs[i].attr.name);

		kfree(counter_attrs);
	}
	kfree(all_attrs);

	return;
}

void acpi_os_gpe_count(u32 gpe_number)
{
	acpi_gpe_count++;

	if (!all_counters)
		return;

	if (gpe_number < num_gpes)
		all_counters[gpe_number].count++;
	else
		all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
			     COUNT_ERROR].count++;

	return;
}

void acpi_os_fixed_event_count(u32 event_number)
{
	if (!all_counters)
		return;

	if (event_number < ACPI_NUM_FIXED_EVENTS)
		all_counters[num_gpes + event_number].count++;
	else
		all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
			     COUNT_ERROR].count++;

	return;
}

static int get_status(u32 index, acpi_event_status *status,
		      acpi_handle *handle)
{
	int result = 0;

	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
		goto end;

	if (index < num_gpes) {
		result = acpi_get_gpe_device(index, handle);
		if (result) {
			ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
					"Invalid GPE 0x%x\n", index));
			goto end;
		}
		result = acpi_get_gpe_status(*handle, index, status);
	} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
		result = acpi_get_event_status(index - num_gpes, status);

end:
	return result;
}

static ssize_t counter_show(struct kobject *kobj,
			    struct kobj_attribute *attr, char *buf)
{
	int index = attr - counter_attrs;
	int size;
	acpi_handle handle;
	acpi_event_status status;
	int result = 0;

	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
	    acpi_irq_handled;
	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
	    acpi_irq_not_handled;
	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
	    acpi_gpe_count;
	size = sprintf(buf, "%8d", all_counters[index].count);

	/* "gpe_all" or "sci" */
	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
		goto end;

	result = get_status(index, &status, &handle);
	if (result)
		goto end;

	if (!(status & ACPI_EVENT_FLAG_HANDLE))
		size += sprintf(buf + size, "   invalid");
	else if (status & ACPI_EVENT_FLAG_ENABLED)
		size += sprintf(buf + size, "   enabled");
	else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
		size += sprintf(buf + size, "   wake_enabled");
	else
		size += sprintf(buf + size, "   disabled");

end:
	size += sprintf(buf + size, "\n");
	return result ? result : size;
}

/*
 * counter_set() sets the specified counter.
 * setting the total "sci" file to any value clears all counters.
 * enable/disable/clear a gpe/fixed event in user space.
 */
static ssize_t counter_set(struct kobject *kobj,
			   struct kobj_attribute *attr, const char *buf,
			   size_t size)
{
	int index = attr - counter_attrs;
	acpi_event_status status;
	acpi_handle handle;
	int result = 0;

	if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
		int i;
		for (i = 0; i < num_counters; ++i)
			all_counters[i].count = 0;
		acpi_gpe_count = 0;
		acpi_irq_handled = 0;
		acpi_irq_not_handled = 0;
		goto end;
	}

	/* show the event status for both GPEs and Fixed Events */
	result = get_status(index, &status, &handle);
	if (result)
		goto end;

	if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
		printk(KERN_WARNING PREFIX
		       "Can not change Invalid GPE/Fixed Event status\n");
		return -EINVAL;
	}

	if (index < num_gpes) {
		if (!strcmp(buf, "disable\n") &&
		    (status & ACPI_EVENT_FLAG_ENABLED))
			result = acpi_disable_gpe(handle, index);
		else if (!strcmp(buf, "enable\n") &&
			 !(status & ACPI_EVENT_FLAG_ENABLED))
			result = acpi_enable_gpe(handle, index);
		else if (!strcmp(buf, "clear\n") &&
			 (status & ACPI_EVENT_FLAG_SET))
			result = acpi_clear_gpe(handle, index);
		else
			all_counters[index].count = strtoul(buf, NULL, 0);
	} else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
		int event = index - num_gpes;
		if (!strcmp(buf, "disable\n") &&
		    (status & ACPI_EVENT_FLAG_ENABLED))
			result = acpi_disable_event(event, ACPI_NOT_ISR);
		else if (!strcmp(buf, "enable\n") &&
			 !(status & ACPI_EVENT_FLAG_ENABLED))
			result = acpi_enable_event(event, ACPI_NOT_ISR);
		else if (!strcmp(buf, "clear\n") &&
			 (status & ACPI_EVENT_FLAG_SET))
			result = acpi_clear_event(event);
		else
			all_counters[index].count = strtoul(buf, NULL, 0);
	} else
		all_counters[index].count = strtoul(buf, NULL, 0);

	if (ACPI_FAILURE(result))
		result = -EINVAL;
end:
	return result ? result : size;
}

void acpi_irq_stats_init(void)
{
	int i;

	if (all_counters)
		return;

	num_gpes = acpi_current_gpe_count;
	num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;

	all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
			    GFP_KERNEL);
	if (all_attrs == NULL)
		return;

	all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
			       GFP_KERNEL);
	if (all_counters == NULL)
		goto fail;

	counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
				GFP_KERNEL);
	if (counter_attrs == NULL)
		goto fail;

	for (i = 0; i < num_counters; ++i) {
		char buffer[12];
		char *name;

		if (i < num_gpes)
			sprintf(buffer, "gpe%02X", i);
		else if (i == num_gpes + ACPI_EVENT_PMTIMER)
			sprintf(buffer, "ff_pmtimer");
		else if (i == num_gpes + ACPI_EVENT_GLOBAL)
			sprintf(buffer, "ff_gbl_lock");
		else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
			sprintf(buffer, "ff_pwr_btn");
		else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
			sprintf(buffer, "ff_slp_btn");
		else if (i == num_gpes + ACPI_EVENT_RTC)
			sprintf(buffer, "ff_rt_clk");
		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
			sprintf(buffer, "gpe_all");
		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
			sprintf(buffer, "sci");
		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
			sprintf(buffer, "sci_not");
		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
			sprintf(buffer, "error");
		else
			sprintf(buffer, "bug%02X", i);

		name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
		if (name == NULL)
			goto fail;
		strncpy(name, buffer, strlen(buffer) + 1);

		sysfs_attr_init(&counter_attrs[i].attr);
		counter_attrs[i].attr.name = name;
		counter_attrs[i].attr.mode = 0644;
		counter_attrs[i].show = counter_show;
		counter_attrs[i].store = counter_set;

		all_attrs[i] = &counter_attrs[i].attr;
	}

	interrupt_stats_attr_group.attrs = all_attrs;
	if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
		return;

fail:
	delete_gpe_attr_array();
	return;
}

static void __exit interrupt_stats_exit(void)
{
	sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);

	delete_gpe_attr_array();

	return;
}

int __init acpi_sysfs_init(void)
{
	int result;

	result = acpi_tables_sysfs_init();

	return result;
}
Commit	Line	Data
1c8fce27 ZR	1	/*
	2	* sysfs.c - ACPI sysfs interface to userspace.
	3	*/
	4
	5	#include <linux/init.h>
	6	#include <linux/kernel.h>
	7	#include <linux/moduleparam.h>
	8	#include <acpi/acpi_drivers.h>
	9
	10	#define _COMPONENT ACPI_SYSTEM_COMPONENT
	11	ACPI_MODULE_NAME("sysfs");
	12
	13	#define PREFIX "ACPI: "
	14
	15	#ifdef CONFIG_ACPI_DEBUG
	16	/*
	17	* ACPI debug sysfs I/F, including:
	18	* /sys/modules/acpi/parameters/debug_layer
	19	* /sys/modules/acpi/parameters/debug_level
	20	* /sys/modules/acpi/parameters/trace_method_name
	21	* /sys/modules/acpi/parameters/trace_state
	22	* /sys/modules/acpi/parameters/trace_debug_layer
	23	* /sys/modules/acpi/parameters/trace_debug_level
	24	*/
	25
	26	struct acpi_dlayer {
	27	const char *name;
	28	unsigned long value;
	29	};
	30	struct acpi_dlevel {
	31	const char *name;
	32	unsigned long value;
	33	};
	34	#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
	35
	36	static const struct acpi_dlayer acpi_debug_layers[] = {
	37	ACPI_DEBUG_INIT(ACPI_UTILITIES),
	38	ACPI_DEBUG_INIT(ACPI_HARDWARE),
	39	ACPI_DEBUG_INIT(ACPI_EVENTS),
	40	ACPI_DEBUG_INIT(ACPI_TABLES),
	41	ACPI_DEBUG_INIT(ACPI_NAMESPACE),
	42	ACPI_DEBUG_INIT(ACPI_PARSER),
	43	ACPI_DEBUG_INIT(ACPI_DISPATCHER),
	44	ACPI_DEBUG_INIT(ACPI_EXECUTER),
	45	ACPI_DEBUG_INIT(ACPI_RESOURCES),
	46	ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
	47	ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
	48	ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
	49	ACPI_DEBUG_INIT(ACPI_COMPILER),
	50	ACPI_DEBUG_INIT(ACPI_TOOLS),
	51
	52	ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
	53	ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
	54	ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
	55	ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
	56	ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
	57	ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
	58	ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
	59	ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
	60	ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
	61	ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
	62	ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
	63	ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
	64	ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
65	ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
66	};
67
68	static const struct acpi_dlevel acpi_debug_levels[] = {
69	ACPI_DEBUG_INIT(ACPI_LV_INIT),
70	ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
71	ACPI_DEBUG_INIT(ACPI_LV_INFO),
72
73	ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
74	ACPI_DEBUG_INIT(ACPI_LV_PARSE),
75	ACPI_DEBUG_INIT(ACPI_LV_LOAD),
76	ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
77	ACPI_DEBUG_INIT(ACPI_LV_EXEC),
78	ACPI_DEBUG_INIT(ACPI_LV_NAMES),
79	ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
80	ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
81	ACPI_DEBUG_INIT(ACPI_LV_TABLES),
82	ACPI_DEBUG_INIT(ACPI_LV_VALUES),
83	ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
84	ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
85	ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
86	ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
87
88	ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
89	ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
90	ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
91
92	ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
93	ACPI_DEBUG_INIT(ACPI_LV_THREADS),
94	ACPI_DEBUG_INIT(ACPI_LV_IO),
95	ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
96
97	ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
98	ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
99	ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
100	ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
101	};
102
103	static int param_get_debug_layer(char buffer, struct kernel_param kp)
104	{
105	int result = 0;
106	int i;
107
108	result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
109
110	for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
111	result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
112	acpi_debug_layers[i].name,
113	acpi_debug_layers[i].value,
114	(acpi_dbg_layer & acpi_debug_layers[i].value)
115	? '*' : ' ');
116	}
117	result +=
118	sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
119	ACPI_ALL_DRIVERS,
120	(acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
121	ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
122	== 0 ? ' ' : '-');
123	result +=
124	sprintf(buffer + result,
125	"--\ndebug_layer = 0x%08X ( * = enabled)\n",
126	acpi_dbg_layer);
127
128	return result;
129	}
130
131	static int param_get_debug_level(char buffer, struct kernel_param kp)
132	{
133	int result = 0;
134	int i;
135
136	result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
137
138	for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
139	result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
140	acpi_debug_levels[i].name,
141	acpi_debug_levels[i].value,
142	(acpi_dbg_level & acpi_debug_levels[i].value)
143	? '*' : ' ');
144	}
145	result +=
146	sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
147	acpi_dbg_level);
148
149	return result;
150	}
151
152	module_param_call(debug_layer, param_set_uint, param_get_debug_layer,
153	&acpi_dbg_layer, 0644);
154	module_param_call(debug_level, param_set_uint, param_get_debug_level,
155	&acpi_dbg_level, 0644);
156
157	static char trace_method_name[6];
158	module_param_string(trace_method_name, trace_method_name, 6, 0644);
159	static unsigned int trace_debug_layer;
160	module_param(trace_debug_layer, uint, 0644);
161	static unsigned int trace_debug_level;
162	module_param(trace_debug_level, uint, 0644);
163
164	static int param_set_trace_state(const char val, struct kernel_param kp)
165	{
166	int result = 0;
167
168	if (!strncmp(val, "enable", strlen("enable") - 1)) {
169	result = acpi_debug_trace(trace_method_name, trace_debug_level,
170	trace_debug_layer, 0);
171	if (result)
172	result = -EBUSY;
173	goto exit;
174	}
175
176	if (!strncmp(val, "disable", strlen("disable") - 1)) {
177	int name = 0;
178	result = acpi_debug_trace((char *)&name, trace_debug_level,
179	trace_debug_layer, 0);
180	if (result)
181	result = -EBUSY;
182	goto exit;
183	}
184
185	if (!strncmp(val, "1", 1)) {
186	result = acpi_debug_trace(trace_method_name, trace_debug_level,
187	trace_debug_layer, 1);
188	if (result)
189	result = -EBUSY;
190	goto exit;
191	}
192
193	result = -EINVAL;
194	exit:
195	return result;
196	}
197
198	static int param_get_trace_state(char buffer, struct kernel_param kp)
199	{
200	if (!acpi_gbl_trace_method_name)
201	return sprintf(buffer, "disable");
202	else {
203	if (acpi_gbl_trace_flags & 1)
204	return sprintf(buffer, "1");
205	else
206	return sprintf(buffer, "enable");
207	}
208	return 0;
209	}
210
211	module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
212	NULL, 0644);
213	#endif /* CONFIG_ACPI_DEBUG */
214
215	/* /sys/module/acpi/parameters/acpica_version */
216	static int param_get_acpica_version(char buffer, struct kernel_param kp)
217	{
218	int result;
219
220	result = sprintf(buffer, "%x", ACPI_CA_VERSION);
221
222	return result;
223	}
224
225	module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
226
227	/*
228	* ACPI table sysfs I/F:
229	* /sys/firmware/acpi/tables/
230	* /sys/firmware/acpi/tables/dynamic/
231	*/
232
233	static LIST_HEAD(acpi_table_attr_list);
234	static struct kobject *tables_kobj;
235	static struct kobject *dynamic_tables_kobj;
236
237	struct acpi_table_attr {
238	struct bin_attribute attr;
239	char name[8];
240	int instance;
241	struct list_head node;
242	};
243
244	static ssize_t acpi_table_show(struct file filp, struct kobject kobj,
245	struct bin_attribute bin_attr, char buf,
246	loff_t offset, size_t count)
247	{
248	struct acpi_table_attr *table_attr =
249	container_of(bin_attr, struct acpi_table_attr, attr);
250	struct acpi_table_header *table_header = NULL;
251	acpi_status status;
252	char name[ACPI_NAME_SIZE];
253
254	if (strncmp(table_attr->name, "NULL", 4))
255	memcpy(name, table_attr->name, ACPI_NAME_SIZE);
256	else
257	memcpy(name, "\0\0\0\0", 4);
258
259	status = acpi_get_table(name, table_attr->instance, &table_header);
260	if (ACPI_FAILURE(status))
261	return -ENODEV;
262
263	return memory_read_from_buffer(buf, count, &offset,
264	table_header, table_header->length);
265	}
266
267	static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
268	struct acpi_table_header *table_header)
269	{
270	struct acpi_table_header *header = NULL;
271	struct acpi_table_attr *attr = NULL;
272
273	sysfs_attr_init(&table_attr->attr.attr);
274	if (table_header->signature[0] != '\0')
275	memcpy(table_attr->name, table_header->signature,
276	ACPI_NAME_SIZE);
277	else
278	memcpy(table_attr->name, "NULL", 4);
279
280	list_for_each_entry(attr, &acpi_table_attr_list, node) {
281	if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
282	if (table_attr->instance < attr->instance)
283	table_attr->instance = attr->instance;
284	}
285	table_attr->instance++;
286
287	if (table_attr->instance > 1 \|\| (table_attr->instance == 1 &&
288	!acpi_get_table
289	(table_header->signature, 2, &header)))
290	sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
291	table_attr->instance);
292
293	table_attr->attr.size = 0;
294	table_attr->attr.read = acpi_table_show;
295	table_attr->attr.attr.name = table_attr->name;
296	table_attr->attr.attr.mode = 0400;
297
298	return;
299	}
300
301	static acpi_status
302	acpi_sysfs_table_handler(u32 event, void table, void context)
303	{
304	struct acpi_table_attr *table_attr;
305
306	switch (event) {
307	case ACPI_TABLE_EVENT_LOAD:
308	table_attr =
309	kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
310	if (!table_attr)
311	return AE_NO_MEMORY;
312
313	acpi_table_attr_init(table_attr, table);
314	if (sysfs_create_bin_file(dynamic_tables_kobj,
315	&table_attr->attr)) {
316	kfree(table_attr);
317	return AE_ERROR;
318	} else
319	list_add_tail(&table_attr->node, &acpi_table_attr_list);
320	break;
321	case ACPI_TABLE_EVENT_UNLOAD:
322	/*
323	* we do not need to do anything right now
324	* because the table is not deleted from the
325	* global table list when unloading it.
326	*/
327	break;
328	default:
329	return AE_BAD_PARAMETER;
330	}
331	return AE_OK;
332	}
333
334	static int acpi_tables_sysfs_init(void)
335	{
336	struct acpi_table_attr *table_attr;
337	struct acpi_table_header *table_header = NULL;
338	int table_index = 0;
339	int result;
340
341	tables_kobj = kobject_create_and_add("tables", acpi_kobj);
342	if (!tables_kobj)
343	goto err;
344
345	dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
346	if (!dynamic_tables_kobj)
347	goto err_dynamic_tables;
348
349	do {
350	result = acpi_get_table_by_index(table_index, &table_header);
351	if (!result) {
352	table_index++;
353	table_attr = NULL;
354	table_attr =
355	kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
356	if (!table_attr)
357	return -ENOMEM;
358
359	acpi_table_attr_init(table_attr, table_header);
360	result =
361	sysfs_create_bin_file(tables_kobj,
362	&table_attr->attr);
363	if (result) {
364	kfree(table_attr);
365	return result;
366	} else
367	list_add_tail(&table_attr->node,
368	&acpi_table_attr_list);
369	}
370	} while (!result);
371	kobject_uevent(tables_kobj, KOBJ_ADD);
372	kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
373	result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
374
375	return result == AE_OK ? 0 : -EINVAL;
376	err_dynamic_tables:
377	kobject_put(tables_kobj);
378	err:
379	return -ENOMEM;
380	}
381
382	/*
383	* Detailed ACPI IRQ counters:
384	* /sys/firmware/acpi/interrupts/
385	*/
386
387	u32 acpi_irq_handled;
388	u32 acpi_irq_not_handled;
389
390	#define COUNT_GPE 0
391	#define COUNT_SCI 1 /* acpi_irq_handled */
392	#define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
393	#define COUNT_ERROR 3 /* other */
394	#define NUM_COUNTERS_EXTRA 4
395
396	struct event_counter {
397	u32 count;
398	u32 flags;
399	};
400
401	static struct event_counter *all_counters;
402	static u32 num_gpes;
403	static u32 num_counters;
404	static struct attribute **all_attrs;
405	static u32 acpi_gpe_count;
406
407	static struct attribute_group interrupt_stats_attr_group = {
408	.name = "interrupts",
409	};
410
411	static struct kobj_attribute *counter_attrs;
412
413	static void delete_gpe_attr_array(void)
414	{
415	struct event_counter *tmp = all_counters;
416
417	all_counters = NULL;
418	kfree(tmp);
419
420	if (counter_attrs) {
421	int i;
422
423	for (i = 0; i < num_gpes; i++)
424	kfree(counter_attrs[i].attr.name);
425
426	kfree(counter_attrs);
427	}
428	kfree(all_attrs);
429
430	return;
431	}
432
433	void acpi_os_gpe_count(u32 gpe_number)
434	{
435	acpi_gpe_count++;
436
437	if (!all_counters)
438	return;
439
440	if (gpe_number < num_gpes)
441	all_counters[gpe_number].count++;
442	else
443	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
444	COUNT_ERROR].count++;
445
446	return;
447	}
448
449	void acpi_os_fixed_event_count(u32 event_number)
450	{
451	if (!all_counters)
452	return;
453
454	if (event_number < ACPI_NUM_FIXED_EVENTS)
455	all_counters[num_gpes + event_number].count++;
456	else
457	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
458	COUNT_ERROR].count++;
459
460	return;
461	}
462
463	static int get_status(u32 index, acpi_event_status *status,
464	acpi_handle *handle)
465	{
466	int result = 0;
467
468	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
469	goto end;
470
471	if (index < num_gpes) {
472	result = acpi_get_gpe_device(index, handle);
473	if (result) {
474	ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
475	"Invalid GPE 0x%x\n", index));
476	goto end;
477	}
478	result = acpi_get_gpe_status(*handle, index, status);
479	} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
480	result = acpi_get_event_status(index - num_gpes, status);
481
482	end:
483	return result;
484	}
485
486	static ssize_t counter_show(struct kobject *kobj,
487	struct kobj_attribute attr, char buf)
488	{
489	int index = attr - counter_attrs;
490	int size;
491	acpi_handle handle;
492	acpi_event_status status;
493	int result = 0;
494
495	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
496	acpi_irq_handled;
497	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
498	acpi_irq_not_handled;
499	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
500	acpi_gpe_count;
501	size = sprintf(buf, "%8d", all_counters[index].count);
502
503	/* "gpe_all" or "sci" */
504	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
505	goto end;
506
507	result = get_status(index, &status, &handle);
508	if (result)
509	goto end;
510
511	if (!(status & ACPI_EVENT_FLAG_HANDLE))
512	size += sprintf(buf + size, " invalid");
513	else if (status & ACPI_EVENT_FLAG_ENABLED)
514	size += sprintf(buf + size, " enabled");
515	else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
516	size += sprintf(buf + size, " wake_enabled");
517	else
518	size += sprintf(buf + size, " disabled");
519
520	end:
521	size += sprintf(buf + size, "\n");
522	return result ? result : size;
523	}
524
525	/*
526	* counter_set() sets the specified counter.
527	* setting the total "sci" file to any value clears all counters.
528	* enable/disable/clear a gpe/fixed event in user space.
529	*/
530	static ssize_t counter_set(struct kobject *kobj,
531	struct kobj_attribute attr, const char buf,
532	size_t size)
533	{
534	int index = attr - counter_attrs;
535	acpi_event_status status;
536	acpi_handle handle;
537	int result = 0;
538
539	if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
540	int i;
541	for (i = 0; i < num_counters; ++i)
542	all_counters[i].count = 0;
543	acpi_gpe_count = 0;
544	acpi_irq_handled = 0;
545	acpi_irq_not_handled = 0;
546	goto end;
547	}
548
549	/* show the event status for both GPEs and Fixed Events */
550	result = get_status(index, &status, &handle);
551	if (result)
552	goto end;
553
554	if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
555	printk(KERN_WARNING PREFIX
556	"Can not change Invalid GPE/Fixed Event status\n");
557	return -EINVAL;
558	}
559
560	if (index < num_gpes) {
561	if (!strcmp(buf, "disable\n") &&
562	(status & ACPI_EVENT_FLAG_ENABLED))
563	result = acpi_disable_gpe(handle, index);
564	else if (!strcmp(buf, "enable\n") &&
565	!(status & ACPI_EVENT_FLAG_ENABLED))
566	result = acpi_enable_gpe(handle, index);
567	else if (!strcmp(buf, "clear\n") &&
568	(status & ACPI_EVENT_FLAG_SET))
569	result = acpi_clear_gpe(handle, index);
570	else
571	all_counters[index].count = strtoul(buf, NULL, 0);
572	} else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
573	int event = index - num_gpes;
574	if (!strcmp(buf, "disable\n") &&
575	(status & ACPI_EVENT_FLAG_ENABLED))
576	result = acpi_disable_event(event, ACPI_NOT_ISR);
577	else if (!strcmp(buf, "enable\n") &&
578	!(status & ACPI_EVENT_FLAG_ENABLED))
579	result = acpi_enable_event(event, ACPI_NOT_ISR);
580	else if (!strcmp(buf, "clear\n") &&
581	(status & ACPI_EVENT_FLAG_SET))
582	result = acpi_clear_event(event);
583	else
584	all_counters[index].count = strtoul(buf, NULL, 0);
585	} else
586	all_counters[index].count = strtoul(buf, NULL, 0);
587
588	if (ACPI_FAILURE(result))
589	result = -EINVAL;
590	end:
591	return result ? result : size;
592	}
593
594	void acpi_irq_stats_init(void)
595	{
596	int i;
597
598	if (all_counters)
599	return;
600
601	num_gpes = acpi_current_gpe_count;
602	num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
603
604	all_attrs = kzalloc(sizeof(struct attribute ) (num_counters + 1),
605	GFP_KERNEL);
606	if (all_attrs == NULL)
607	return;
608
609	all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
610	GFP_KERNEL);
611	if (all_counters == NULL)
612	goto fail;
613
614	counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
615	GFP_KERNEL);
616	if (counter_attrs == NULL)
617	goto fail;
618
619	for (i = 0; i < num_counters; ++i) {
620	char buffer[12];
621	char *name;
622
623	if (i < num_gpes)
624	sprintf(buffer, "gpe%02X", i);
625	else if (i == num_gpes + ACPI_EVENT_PMTIMER)
626	sprintf(buffer, "ff_pmtimer");
627	else if (i == num_gpes + ACPI_EVENT_GLOBAL)
628	sprintf(buffer, "ff_gbl_lock");
629	else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
630	sprintf(buffer, "ff_pwr_btn");
631	else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
632	sprintf(buffer, "ff_slp_btn");
633	else if (i == num_gpes + ACPI_EVENT_RTC)
634	sprintf(buffer, "ff_rt_clk");
635	else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
636	sprintf(buffer, "gpe_all");
637	else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
638	sprintf(buffer, "sci");
639	else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
640	sprintf(buffer, "sci_not");
641	else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
642	sprintf(buffer, "error");
643	else
644	sprintf(buffer, "bug%02X", i);
645
646	name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
647	if (name == NULL)
648	goto fail;
649	strncpy(name, buffer, strlen(buffer) + 1);
650
651	sysfs_attr_init(&counter_attrs[i].attr);
652	counter_attrs[i].attr.name = name;
653	counter_attrs[i].attr.mode = 0644;
654	counter_attrs[i].show = counter_show;
655	counter_attrs[i].store = counter_set;
656
657	all_attrs[i] = &counter_attrs[i].attr;
658	}
659
660	interrupt_stats_attr_group.attrs = all_attrs;
661	if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
662	return;
663
664	fail:
665	delete_gpe_attr_array();
666	return;
667	}
668
669	static void __exit interrupt_stats_exit(void)
670	{
671	sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
672
673	delete_gpe_attr_array();
674
675	return;
676	}
677
678	int __init acpi_sysfs_init(void)
679	{
680	int result;
681
682	result = acpi_tables_sysfs_init();
683
684	return result;
685	}