ACPI: introduce drivers/acpi/sysfs.c

Introduce drivers/acpi/sysfs.c.

code for ACPI sysfs I/F, including
#ifdef ACPI_DEBUG
/sys/module/acpi/parameters/debug_layer
/sys/module/acpi/parameters/debug_level
/sys/module/acpi/parameters/trace_method_name
/sys/module/acpi/parameters/trace_debug_layer
/sys/module/acpi/parameters/trace_debug_level
/sys/module/acpi/parameters/trace_state
#endif
/sys/module/acpi/parameters/acpica_version
/sys/firmware/acpi/tables/
/sys/firmware/acpi/interrupts/
is moved to this file.

No function change in this patch.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 0 insertions, 467 deletions

diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 5981bd07e20..d70481f32c8 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -40,469 +40,6 @@ ACPI_MODULE_NAME("system");
 #define ACPI_SYSTEM_CLASS		"system"
 #define ACPI_SYSTEM_DEVICE_NAME		"System"
 
-u32 acpi_irq_handled;
-u32 acpi_irq_not_handled;
-
-/*
- * Make ACPICA version work as module param
- */
-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);
-
-/* --------------------------------------------------------------------------
-                              FS Interface (/sys)
-   -------------------------------------------------------------------------- */
-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_system_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 in /sys/firmware/acpi/interrupts/
- * See Documentation/ABI/testing/sysfs-firmware-acpi
- */
-
-#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;
-}
-
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
@@ -628,10 +165,6 @@ int __init acpi_system_init(void)
 	int result;
 
 	result = acpi_system_procfs_init();
-	if (result)
-		return result;
-
-	result = acpi_system_sysfs_init();
 
 	return result;
 }