mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
![Len Brown](/assets/img/avatar_default.png)
...both give the number of chars in the string without the '\0', as strncmp() wants, but sizeof() is compile-time. Reported-by: Alan Stern <stern@rowland.harvard.edu> Cc: Pavel Vasilyev <pavel@pavlinux.ru> Signed-off-by: Len Brown <len.brown@intel.com>
728 lines
18 KiB
C
728 lines
18 KiB
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, ¶m_ops_debug_layer, &acpi_dbg_layer, 0644);
|
|
module_param_cb(debug_level, ¶m_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", sizeof("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", sizeof("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;
|
|
}
|