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path: root/drivers/acpi/system.c
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Diffstat (limited to 'drivers/acpi/system.c')
-rw-r--r--drivers/acpi/system.c111
1 files changed, 28 insertions, 83 deletions
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 1d74171b794..391d0358a59 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -78,9 +78,15 @@ static ssize_t acpi_table_show(struct kobject *kobj,
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(table_attr->name, table_attr->instance,
+ acpi_get_table(name, table_attr->instance,
&table_header);
if (ACPI_FAILURE(status))
return -ENODEV;
@@ -95,21 +101,24 @@ static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
struct acpi_table_header *header = NULL;
struct acpi_table_attr *attr = NULL;
- memcpy(table_attr->name, table_header->signature, ACPI_NAME_SIZE);
+ 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_header->signature, attr->name,
- ACPI_NAME_SIZE))
+ 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 + 4, "%d", table_attr->instance);
+ !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;
@@ -167,7 +176,6 @@ static int acpi_system_sysfs_init(void)
#define COUNT_ERROR 2 /* other */
#define NUM_COUNTERS_EXTRA 3
-#define ACPI_EVENT_VALID 0x01
struct event_counter {
u32 count;
u32 flags;
@@ -184,65 +192,6 @@ static struct attribute_group interrupt_stats_attr_group = {
};
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 int get_gpe_device(int index, acpi_handle *handle)
-{
- struct acpi_gpe_xrupt_info *gpe_xrupt_info;
- struct acpi_gpe_block_info *gpe_block;
- acpi_cpu_flags flags;
- struct acpi_namespace_node *node;
-
- 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;
- node = gpe_block->node;
- while (gpe_block) {
- index -= gpe_block->register_count *
- ACPI_GPE_REGISTER_WIDTH;
- if (index < 0) {
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- /* return NULL if it's FADT GPE */
- if (node->type != ACPI_TYPE_DEVICE)
- *handle = NULL;
- else
- *handle = node;
- return 0;
- }
- node = gpe_block->node;
- gpe_block = gpe_block->next;
- }
- gpe_xrupt_info = gpe_xrupt_info->next;
- }
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-
- return -ENODEV;
-}
-
static void delete_gpe_attr_array(void)
{
struct event_counter *tmp = all_counters;
@@ -301,7 +250,7 @@ static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
goto end;
if (index < num_gpes) {
- result = get_gpe_device(index, handle);
+ result = acpi_get_gpe_device(index, handle);
if (result) {
ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
"Invalid GPE 0x%x\n", index));
@@ -312,12 +261,6 @@ static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
result = acpi_get_event_status(index - num_gpes, status);
- /*
- * sleep/power button GPE/Fixed Event is enabled after acpi_system_init,
- * check the status at runtime and mark it as valid once it's enabled
- */
- if (!result && (*status & ACPI_EVENT_FLAG_ENABLED))
- all_counters[index].flags |= ACPI_EVENT_VALID;
end:
return result;
}
@@ -346,12 +289,14 @@ static ssize_t counter_show(struct kobject *kobj,
if (result)
goto end;
- if (!(all_counters[index].flags & ACPI_EVENT_VALID))
- size += sprintf(buf + size, " invalid");
+ if (!(status & ACPI_EVENT_FLAG_HANDLE))
+ size += sprintf(buf + size, " invalid");
else if (status & ACPI_EVENT_FLAG_ENABLED)
- size += sprintf(buf + size, " enable");
+ size += sprintf(buf + size, " enabled");
+ else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
+ size += sprintf(buf + size, " wake_enabled");
else
- size += sprintf(buf + size, " disable");
+ size += sprintf(buf + size, " disabled");
end:
size += sprintf(buf + size, "\n");
@@ -385,7 +330,7 @@ static ssize_t counter_set(struct kobject *kobj,
if (result)
goto end;
- if (!(all_counters[index].flags & ACPI_EVENT_VALID)) {
+ if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
printk(KERN_WARNING PREFIX
"Can not change Invalid GPE/Fixed Event status\n");
return -EINVAL;
@@ -394,10 +339,10 @@ static ssize_t counter_set(struct kobject *kobj,
if (index < num_gpes) {
if (!strcmp(buf, "disable\n") &&
(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_disable_gpe(handle, index, ACPI_NOT_ISR);
+ result = acpi_disable_gpe(handle, index);
else if (!strcmp(buf, "enable\n") &&
!(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_enable_gpe(handle, index, ACPI_NOT_ISR);
+ result = acpi_enable_gpe(handle, index);
else if (!strcmp(buf, "clear\n") &&
(status & ACPI_EVENT_FLAG_SET))
result = acpi_clear_gpe(handle, index, ACPI_NOT_ISR);
@@ -432,7 +377,7 @@ void acpi_irq_stats_init(void)
if (all_counters)
return;
- num_gpes = count_num_gpes();
+ 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),
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-15 05:06:56 +0000