#define ACPI_SYSTEM_CLASS "system"
#define ACPI_SYSTEM_DEVICE_NAME "System"
-#define ACPI_SYSTEM_FILE_INFO "info"
-#define ACPI_SYSTEM_FILE_EVENT "event"
-#define ACPI_SYSTEM_FILE_DSDT "dsdt"
-#define ACPI_SYSTEM_FILE_FADT "fadt"
+
+u32 acpi_irq_handled;
/*
* Make ACPICA version work as module param
*/
-static int param_get_acpica_version(char *buffer, struct kernel_param *kp) {
+static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
+{
int result;
result = sprintf(buffer, "%x", ACPI_CA_VERSION);
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;
+
+struct acpi_table_attr {
+ struct bin_attribute attr;
+ char name[8];
+ int instance;
+ struct list_head node;
+};
+
+static ssize_t acpi_table_show(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;
+ ssize_t ret_count = count;
+
+ status =
+ acpi_get_table(table_attr->name, table_attr->instance,
+ &table_header);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ if (offset >= table_header->length) {
+ ret_count = 0;
+ goto end;
+ }
+
+ if (offset + ret_count > table_header->length)
+ ret_count = table_header->length - offset;
+
+ memcpy(buf, ((char *)table_header) + offset, ret_count);
+
+ end:
+ return ret_count;
+}
+
+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;
+
+ memcpy(table_attr->name, table_header->signature, ACPI_NAME_SIZE);
+
+ list_for_each_entry(attr, &acpi_table_attr_list, node) {
+ if (!memcmp(table_header->signature, 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 + 4, "%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 = 0444;
+ table_attr->attr.attr.owner = THIS_MODULE;
+
+ return;
+}
+
+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)
+ return -ENOMEM;
+
+ 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);
+
+ return 0;
+}
+
+/*
+ * 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_ERROR 2 /* other */
+#define NUM_COUNTERS_EXTRA 3
+
+static u32 *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 int count_num_gpes(void)
+{
+ int count = 0;
+ struct acpi_gpe_xrupt_info *gpe_xrupt_info;
+ struct acpi_gpe_block_info *gpe_block;
+ acpi_cpu_flags flags;
+
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
+ gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
+ while (gpe_xrupt_info) {
+ gpe_block = gpe_xrupt_info->gpe_block_list_head;
+ while (gpe_block) {
+ count += gpe_block->register_count *
+ ACPI_GPE_REGISTER_WIDTH;
+ gpe_block = gpe_block->next;
+ }
+ gpe_xrupt_info = gpe_xrupt_info->next;
+ }
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+
+ return count;
+}
+
+static void delete_gpe_attr_array(void)
+{
+ u32 *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]++;
+ else
+ all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]++;
+
+ 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]++;
+ else
+ all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]++;
+
+ return;
+}
+
+static ssize_t counter_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI] =
+ acpi_irq_handled;
+ all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE] =
+ acpi_gpe_count;
+
+ return sprintf(buf, "%d\n", all_counters[attr - counter_attrs]);
+}
+
+/*
+ * counter_set() sets the specified counter.
+ * setting the total "sci" file to any value clears all counters.
+ */
+static ssize_t counter_set(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t size)
+{
+ int index = attr - counter_attrs;
+
+ if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
+ int i;
+ for (i = 0; i < num_counters; ++i)
+ all_counters[i] = 0;
+ acpi_gpe_count = 0;
+ acpi_irq_handled = 0;
+
+ } else
+ all_counters[index] = strtoul(buf, NULL, 0);
+
+ return size;
+}
+
+void acpi_irq_stats_init(void)
+{
+ int i;
+
+ if (all_counters)
+ return;
+
+ num_gpes = count_num_gpes();
+ 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(u32) * (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_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);
+
+ 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)
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_PROCFS
+#define ACPI_SYSTEM_FILE_INFO "info"
+#define ACPI_SYSTEM_FILE_EVENT "event"
+#define ACPI_SYSTEM_FILE_DSDT "dsdt"
+#define ACPI_SYSTEM_FILE_FADT "fadt"
static int acpi_system_read_info(struct seq_file *seq, void *offset)
{
.llseek = seq_lseek,
.release = single_release,
};
-#endif
static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t,
loff_t *);
struct acpi_table_header *dsdt = NULL;
ssize_t res;
-
status = acpi_get_table(ACPI_SIG_DSDT, 1, &dsdt);
if (ACPI_FAILURE(status))
return -ENODEV;
- res = simple_read_from_buffer(buffer, count, ppos,
- dsdt, dsdt->length);
+ res = simple_read_from_buffer(buffer, count, ppos, dsdt, dsdt->length);
return res;
}
struct acpi_table_header *fadt = NULL;
ssize_t res;
-
status = acpi_get_table(ACPI_SIG_FADT, 1, &fadt);
if (ACPI_FAILURE(status))
return -ENODEV;
- res = simple_read_from_buffer(buffer, count, ppos,
- fadt, fadt->length);
+ res = simple_read_from_buffer(buffer, count, ppos, fadt, fadt->length);
return res;
}
-static int __init acpi_system_init(void)
+static int acpi_system_procfs_init(void)
{
struct proc_dir_entry *entry;
int error = 0;
char *name;
-
- if (acpi_disabled)
- return 0;
-
-#ifdef CONFIG_ACPI_PROCFS
/* 'info' [R] */
name = ACPI_SYSTEM_FILE_INFO;
entry = create_proc_entry(name, S_IRUGO, acpi_root_dir);
else {
entry->proc_fops = &acpi_system_info_ops;
}
-#endif
/* 'dsdt' [R] */
name = ACPI_SYSTEM_FILE_DSDT;
Error:
remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir);
remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir);
-#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir);
-#endif
error = -EFAULT;
goto Done;
}
+#else
+static int acpi_system_procfs_init(void)
+{
+ return 0;
+}
+#endif
+
+static int __init acpi_system_init(void)
+{
+ int result = 0;
+
+ if (acpi_disabled)
+ return 0;
+
+ result = acpi_system_procfs_init();
+ if (result)
+ return result;
+
+ result = acpi_system_sysfs_init();
+
+ return result;
+}
subsys_initcall(acpi_system_init);
git.samba.org / sfrench / cifs-2.6.git / blobdiff