--- /dev/null
+/*
+ * 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;
+}
#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)
-------------------------------------------------------------------------- */
int result;
result = acpi_system_procfs_init();
- if (result)
- return result;
-
- result = acpi_system_sysfs_init();
return result;
}
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff