[linux.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, const 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, const 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;
}

static const struct kernel_param_ops param_ops_debug_layer = {
	.set = param_set_uint,
	.get = param_get_debug_layer,
};

static const struct kernel_param_ops param_ops_debug_level = {
	.set = param_set_uint,
	.get = param_get_debug_level,
};

module_param_cb(debug_layer, &param_ops_debug_layer, &acpi_dbg_layer, 0644);
module_param_cb(debug_level, &param_ops_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/modules/acpi/parameters/aml_debug_output */

module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
		   bool, 0644);
MODULE_PARM_DESC(aml_debug_output,
		 "To enable/disable the ACPI Debug Object output.");

/* /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;
}

static void 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;
}

static void 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 void acpi_gbl_event_handler(u32 event_type, acpi_handle device,
	u32 event_number, void *context)
{
	if (event_type == ACPI_EVENT_TYPE_GPE)
		gpe_count(event_number);

	if (event_type == ACPI_EVENT_TYPE_FIXED)
		fixed_event_count(event_number);
}

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)
{
	acpi_status status;
	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;

	status = acpi_install_global_event_handler(acpi_gbl_event_handler, NULL);
	if (ACPI_FAILURE(status))
		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;
}

static ssize_t
acpi_show_profile(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
}

static const struct device_attribute pm_profile_attr =
	__ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);

int __init acpi_sysfs_init(void)
{
	int result;

	result = acpi_tables_sysfs_init();
	if (result)
		return result;
	result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
	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
ec652b35	103	static int param_get_debug_layer(char buffer, const struct kernel_param kp)
1c8fce27 ZR	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
ec652b35	131	static int param_get_debug_level(char buffer, const struct kernel_param kp)
1c8fce27 ZR	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
9c8b04be	152	static const struct kernel_param_ops param_ops_debug_layer = {
ec652b35 ZR	153	.set = param_set_uint,
	154	.get = param_get_debug_layer,
	155	};
	156
9c8b04be	157	static const struct kernel_param_ops param_ops_debug_level = {
ec652b35 ZR	158	.set = param_set_uint,
	159	.get = param_get_debug_level,
	160	};
	161
	162	module_param_cb(debug_layer, &param_ops_debug_layer, &acpi_dbg_layer, 0644);
	163	module_param_cb(debug_level, &param_ops_debug_level, &acpi_dbg_level, 0644);
1c8fce27 ZR	164
	165	static char trace_method_name[6];
	166	module_param_string(trace_method_name, trace_method_name, 6, 0644);
	167	static unsigned int trace_debug_layer;
	168	module_param(trace_debug_layer, uint, 0644);
	169	static unsigned int trace_debug_level;
	170	module_param(trace_debug_level, uint, 0644);
	171
	172	static int param_set_trace_state(const char val, struct kernel_param kp)
	173	{
	174	int result = 0;
	175
	176	if (!strncmp(val, "enable", strlen("enable") - 1)) {
	177	result = acpi_debug_trace(trace_method_name, trace_debug_level,
	178	trace_debug_layer, 0);
	179	if (result)
	180	result = -EBUSY;
	181	goto exit;
	182	}
	183
	184	if (!strncmp(val, "disable", strlen("disable") - 1)) {
	185	int name = 0;
	186	result = acpi_debug_trace((char *)&name, trace_debug_level,
	187	trace_debug_layer, 0);
	188	if (result)
	189	result = -EBUSY;
	190	goto exit;
	191	}
	192
	193	if (!strncmp(val, "1", 1)) {
	194	result = acpi_debug_trace(trace_method_name, trace_debug_level,
	195	trace_debug_layer, 1);
	196	if (result)
	197	result = -EBUSY;
	198	goto exit;
	199	}
	200
	201	result = -EINVAL;
	202	exit:
	203	return result;
	204	}
	205
	206	static int param_get_trace_state(char buffer, struct kernel_param kp)
	207	{
	208	if (!acpi_gbl_trace_method_name)
	209	return sprintf(buffer, "disable");
	210	else {
	211	if (acpi_gbl_trace_flags & 1)
	212	return sprintf(buffer, "1");
	213	else
	214	return sprintf(buffer, "enable");
	215	}
	216	return 0;
	217	}
	218
	219	module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
	220	NULL, 0644);
	221	#endif /* CONFIG_ACPI_DEBUG */
	222
aecad432 TR	223
	224	/* /sys/modules/acpi/parameters/aml_debug_output */
	225
	226	module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
	227	bool, 0644);
	228	MODULE_PARM_DESC(aml_debug_output,
	229	"To enable/disable the ACPI Debug Object output.");
	230
1c8fce27 ZR	231	/* /sys/module/acpi/parameters/acpica_version */
	232	static int param_get_acpica_version(char buffer, struct kernel_param kp)
	233	{
	234	int result;
	235
	236	result = sprintf(buffer, "%x", ACPI_CA_VERSION);
	237
	238	return result;
	239	}
	240
	241	module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
	242
	243	/*
	244	* ACPI table sysfs I/F:
	245	* /sys/firmware/acpi/tables/
	246	* /sys/firmware/acpi/tables/dynamic/
	247	*/
	248
	249	static LIST_HEAD(acpi_table_attr_list);
	250	static struct kobject *tables_kobj;
	251	static struct kobject *dynamic_tables_kobj;
	252
	253	struct acpi_table_attr {
	254	struct bin_attribute attr;
	255	char name[8];
	256	int instance;
	257	struct list_head node;
	258	};
	259
	260	static ssize_t acpi_table_show(struct file filp, struct kobject kobj,
	261	struct bin_attribute bin_attr, char buf,
	262	loff_t offset, size_t count)
	263	{
	264	struct acpi_table_attr *table_attr =
	265	container_of(bin_attr, struct acpi_table_attr, attr);
	266	struct acpi_table_header *table_header = NULL;
	267	acpi_status status;
	268	char name[ACPI_NAME_SIZE];
	269
	270	if (strncmp(table_attr->name, "NULL", 4))
	271	memcpy(name, table_attr->name, ACPI_NAME_SIZE);
	272	else
	273	memcpy(name, "\0\0\0\0", 4);
	274
	275	status = acpi_get_table(name, table_attr->instance, &table_header);
	276	if (ACPI_FAILURE(status))
	277	return -ENODEV;
	278
	279	return memory_read_from_buffer(buf, count, &offset,
	280	table_header, table_header->length);
	281	}
	282
	283	static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
	284	struct acpi_table_header *table_header)
	285	{
	286	struct acpi_table_header *header = NULL;
	287	struct acpi_table_attr *attr = NULL;
	288
	289	sysfs_attr_init(&table_attr->attr.attr);
	290	if (table_header->signature[0] != '\0')
	291	memcpy(table_attr->name, table_header->signature,
	292	ACPI_NAME_SIZE);
	293	else
	294	memcpy(table_attr->name, "NULL", 4);
295
296	list_for_each_entry(attr, &acpi_table_attr_list, node) {
297	if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
298	if (table_attr->instance < attr->instance)
299	table_attr->instance = attr->instance;
300	}
301	table_attr->instance++;
302
303	if (table_attr->instance > 1 \|\| (table_attr->instance == 1 &&
304	!acpi_get_table
305	(table_header->signature, 2, &header)))
306	sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
307	table_attr->instance);
308
309	table_attr->attr.size = 0;
310	table_attr->attr.read = acpi_table_show;
311	table_attr->attr.attr.name = table_attr->name;
312	table_attr->attr.attr.mode = 0400;
313
314	return;
315	}
316
317	static acpi_status
318	acpi_sysfs_table_handler(u32 event, void table, void context)
319	{
320	struct acpi_table_attr *table_attr;
321
322	switch (event) {
323	case ACPI_TABLE_EVENT_LOAD:
324	table_attr =
325	kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
326	if (!table_attr)
327	return AE_NO_MEMORY;
328
329	acpi_table_attr_init(table_attr, table);
330	if (sysfs_create_bin_file(dynamic_tables_kobj,
331	&table_attr->attr)) {
332	kfree(table_attr);
333	return AE_ERROR;
334	} else
335	list_add_tail(&table_attr->node, &acpi_table_attr_list);
336	break;
337	case ACPI_TABLE_EVENT_UNLOAD:
338	/*
339	* we do not need to do anything right now
340	* because the table is not deleted from the
341	* global table list when unloading it.
342	*/
343	break;
344	default:
345	return AE_BAD_PARAMETER;
346	}
347	return AE_OK;
348	}
349
350	static int acpi_tables_sysfs_init(void)
351	{
352	struct acpi_table_attr *table_attr;
353	struct acpi_table_header *table_header = NULL;
354	int table_index = 0;
355	int result;
356
357	tables_kobj = kobject_create_and_add("tables", acpi_kobj);
358	if (!tables_kobj)
359	goto err;
360
361	dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
362	if (!dynamic_tables_kobj)
363	goto err_dynamic_tables;
364
365	do {
366	result = acpi_get_table_by_index(table_index, &table_header);
367	if (!result) {
368	table_index++;
369	table_attr = NULL;
370	table_attr =
371	kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
372	if (!table_attr)
373	return -ENOMEM;
374
375	acpi_table_attr_init(table_attr, table_header);
376	result =
377	sysfs_create_bin_file(tables_kobj,
378	&table_attr->attr);
379	if (result) {
380	kfree(table_attr);
381	return result;
382	} else
383	list_add_tail(&table_attr->node,
384	&acpi_table_attr_list);
385	}
386	} while (!result);
387	kobject_uevent(tables_kobj, KOBJ_ADD);
388	kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
389	result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
390
391	return result == AE_OK ? 0 : -EINVAL;
392	err_dynamic_tables:
393	kobject_put(tables_kobj);
394	err:
395	return -ENOMEM;
396	}
397
398	/*
399	* Detailed ACPI IRQ counters:
400	* /sys/firmware/acpi/interrupts/
401	*/
402
403	u32 acpi_irq_handled;
404	u32 acpi_irq_not_handled;
405
406	#define COUNT_GPE 0
407	#define COUNT_SCI 1 /* acpi_irq_handled */
408	#define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
409	#define COUNT_ERROR 3 /* other */
410	#define NUM_COUNTERS_EXTRA 4
411
412	struct event_counter {
413	u32 count;
414	u32 flags;
415	};
416
417	static struct event_counter *all_counters;
418	static u32 num_gpes;
419	static u32 num_counters;
420	static struct attribute **all_attrs;
421	static u32 acpi_gpe_count;
422
423	static struct attribute_group interrupt_stats_attr_group = {
424	.name = "interrupts",
425	};
426
427	static struct kobj_attribute *counter_attrs;
428
429	static void delete_gpe_attr_array(void)
430	{
431	struct event_counter *tmp = all_counters;
432
433	all_counters = NULL;
434	kfree(tmp);
435
436	if (counter_attrs) {
437	int i;
438
439	for (i = 0; i < num_gpes; i++)
440	kfree(counter_attrs[i].attr.name);
441
442	kfree(counter_attrs);
443	}
444	kfree(all_attrs);
445
446	return;
447	}
448
a0fcdb23	449	static void gpe_count(u32 gpe_number)
1c8fce27 ZR	450	{
	451	acpi_gpe_count++;
	452
	453	if (!all_counters)
	454	return;
	455
	456	if (gpe_number < num_gpes)
	457	all_counters[gpe_number].count++;
	458	else
	459	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
	460	COUNT_ERROR].count++;
	461
	462	return;
	463	}
	464
a0fcdb23	465	static void fixed_event_count(u32 event_number)
1c8fce27 ZR	466	{
	467	if (!all_counters)
	468	return;
	469
	470	if (event_number < ACPI_NUM_FIXED_EVENTS)
	471	all_counters[num_gpes + event_number].count++;
	472	else
	473	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
	474	COUNT_ERROR].count++;
	475
	476	return;
	477	}
	478
a0fcdb23 LM	479	static void acpi_gbl_event_handler(u32 event_type, acpi_handle device,
	480	u32 event_number, void *context)
	481	{
	482	if (event_type == ACPI_EVENT_TYPE_GPE)
	483	gpe_count(event_number);
	484
	485	if (event_type == ACPI_EVENT_TYPE_FIXED)
	486	fixed_event_count(event_number);
	487	}
	488
1c8fce27 ZR	489	static int get_status(u32 index, acpi_event_status *status,
	490	acpi_handle *handle)
	491	{
	492	int result = 0;
	493
	494	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
	495	goto end;
	496
	497	if (index < num_gpes) {
	498	result = acpi_get_gpe_device(index, handle);
	499	if (result) {
	500	ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
	501	"Invalid GPE 0x%x\n", index));
	502	goto end;
	503	}
	504	result = acpi_get_gpe_status(*handle, index, status);
	505	} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
	506	result = acpi_get_event_status(index - num_gpes, status);
	507
	508	end:
	509	return result;
	510	}
	511
	512	static ssize_t counter_show(struct kobject *kobj,
	513	struct kobj_attribute attr, char buf)
	514	{
	515	int index = attr - counter_attrs;
	516	int size;
	517	acpi_handle handle;
	518	acpi_event_status status;
	519	int result = 0;
	520
	521	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
	522	acpi_irq_handled;
	523	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
	524	acpi_irq_not_handled;
	525	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
	526	acpi_gpe_count;
	527	size = sprintf(buf, "%8d", all_counters[index].count);
	528
	529	/* "gpe_all" or "sci" */
	530	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
	531	goto end;
	532
	533	result = get_status(index, &status, &handle);
	534	if (result)
	535	goto end;
	536
	537	if (!(status & ACPI_EVENT_FLAG_HANDLE))
	538	size += sprintf(buf + size, " invalid");
	539	else if (status & ACPI_EVENT_FLAG_ENABLED)
	540	size += sprintf(buf + size, " enabled");
	541	else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
	542	size += sprintf(buf + size, " wake_enabled");
	543	else
	544	size += sprintf(buf + size, " disabled");
	545
	546	end:
	547	size += sprintf(buf + size, "\n");
	548	return result ? result : size;
	549	}
	550
	551	/*
	552	* counter_set() sets the specified counter.
553	* setting the total "sci" file to any value clears all counters.
554	* enable/disable/clear a gpe/fixed event in user space.
555	*/
556	static ssize_t counter_set(struct kobject *kobj,
557	struct kobj_attribute attr, const char buf,
558	size_t size)
559	{
560	int index = attr - counter_attrs;
561	acpi_event_status status;
562	acpi_handle handle;
563	int result = 0;
564
565	if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
566	int i;
567	for (i = 0; i < num_counters; ++i)
568	all_counters[i].count = 0;
569	acpi_gpe_count = 0;
570	acpi_irq_handled = 0;
571	acpi_irq_not_handled = 0;
572	goto end;
573	}
574
575	/* show the event status for both GPEs and Fixed Events */
576	result = get_status(index, &status, &handle);
577	if (result)
578	goto end;
579
580	if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
581	printk(KERN_WARNING PREFIX
582	"Can not change Invalid GPE/Fixed Event status\n");
583	return -EINVAL;
584	}
585
586	if (index < num_gpes) {
587	if (!strcmp(buf, "disable\n") &&
588	(status & ACPI_EVENT_FLAG_ENABLED))
589	result = acpi_disable_gpe(handle, index);
590	else if (!strcmp(buf, "enable\n") &&
591	!(status & ACPI_EVENT_FLAG_ENABLED))
592	result = acpi_enable_gpe(handle, index);
593	else if (!strcmp(buf, "clear\n") &&
594	(status & ACPI_EVENT_FLAG_SET))
595	result = acpi_clear_gpe(handle, index);
596	else
597	all_counters[index].count = strtoul(buf, NULL, 0);
598	} else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
599	int event = index - num_gpes;
600	if (!strcmp(buf, "disable\n") &&
601	(status & ACPI_EVENT_FLAG_ENABLED))
602	result = acpi_disable_event(event, ACPI_NOT_ISR);
603	else if (!strcmp(buf, "enable\n") &&
604	!(status & ACPI_EVENT_FLAG_ENABLED))
605	result = acpi_enable_event(event, ACPI_NOT_ISR);
606	else if (!strcmp(buf, "clear\n") &&
607	(status & ACPI_EVENT_FLAG_SET))
608	result = acpi_clear_event(event);
609	else
610	all_counters[index].count = strtoul(buf, NULL, 0);
611	} else
612	all_counters[index].count = strtoul(buf, NULL, 0);
613
614	if (ACPI_FAILURE(result))
615	result = -EINVAL;
616	end:
617	return result ? result : size;
618	}
619
620	void acpi_irq_stats_init(void)
621	{
a0fcdb23	622	acpi_status status;
1c8fce27 ZR	623	int i;
	624
	625	if (all_counters)
	626	return;
	627
	628	num_gpes = acpi_current_gpe_count;
	629	num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
	630
	631	all_attrs = kzalloc(sizeof(struct attribute ) (num_counters + 1),
	632	GFP_KERNEL);
	633	if (all_attrs == NULL)
	634	return;
	635
	636	all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
	637	GFP_KERNEL);
	638	if (all_counters == NULL)
	639	goto fail;
	640
a0fcdb23 LM	641	status = acpi_install_global_event_handler(acpi_gbl_event_handler, NULL);
	642	if (ACPI_FAILURE(status))
	643	goto fail;
	644
1c8fce27 ZR	645	counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
	646	GFP_KERNEL);
	647	if (counter_attrs == NULL)
	648	goto fail;
	649
	650	for (i = 0; i < num_counters; ++i) {
	651	char buffer[12];
	652	char *name;
	653
	654	if (i < num_gpes)
	655	sprintf(buffer, "gpe%02X", i);
	656	else if (i == num_gpes + ACPI_EVENT_PMTIMER)
	657	sprintf(buffer, "ff_pmtimer");
	658	else if (i == num_gpes + ACPI_EVENT_GLOBAL)
	659	sprintf(buffer, "ff_gbl_lock");
	660	else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
	661	sprintf(buffer, "ff_pwr_btn");
	662	else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
	663	sprintf(buffer, "ff_slp_btn");
	664	else if (i == num_gpes + ACPI_EVENT_RTC)
	665	sprintf(buffer, "ff_rt_clk");
	666	else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
	667	sprintf(buffer, "gpe_all");
	668	else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
	669	sprintf(buffer, "sci");
	670	else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
	671	sprintf(buffer, "sci_not");
	672	else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
	673	sprintf(buffer, "error");
	674	else
	675	sprintf(buffer, "bug%02X", i);
	676
	677	name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
	678	if (name == NULL)
	679	goto fail;
	680	strncpy(name, buffer, strlen(buffer) + 1);
	681
	682	sysfs_attr_init(&counter_attrs[i].attr);
	683	counter_attrs[i].attr.name = name;
	684	counter_attrs[i].attr.mode = 0644;
	685	counter_attrs[i].show = counter_show;
	686	counter_attrs[i].store = counter_set;
	687
	688	all_attrs[i] = &counter_attrs[i].attr;
	689	}
	690
	691	interrupt_stats_attr_group.attrs = all_attrs;
	692	if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
	693	return;
	694
	695	fail:
	696	delete_gpe_attr_array();
	697	return;
	698	}
	699
	700	static void __exit interrupt_stats_exit(void)
	701	{
	702	sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
	703
	704	delete_gpe_attr_array();
	705
	706	return;
	707	}
	708
362b6460 TR	709	static ssize_t
	710	acpi_show_profile(struct device dev, struct device_attribute attr,
	711	char *buf)
	712	{
	713	return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
	714	}
	715
	716	static const struct device_attribute pm_profile_attr =
	717	__ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
	718
1c8fce27 ZR	719	int __init acpi_sysfs_init(void)
	720	{
	721	int result;
	722
	723	result = acpi_tables_sysfs_init();
362b6460 TR	724	if (result)
	725	return result;
	726	result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
1c8fce27 ZR	727	return result;
1c8fce27 ZR	728	}