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path: root/drivers/acpi/events/evmisc.c
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Diffstat (limited to 'drivers/acpi/events/evmisc.c')
-rw-r--r--drivers/acpi/events/evmisc.c92
1 files changed, 47 insertions, 45 deletions
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index 21cb749d0c7..2113e58e222 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -5,7 +5,7 @@
*****************************************************************************/
/*
- * Copyright (C) 2000 - 2007, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -49,22 +49,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evmisc")
-/* Names for Notify() values, used for debug output */
-#ifdef ACPI_DEBUG_OUTPUT
-static const char *acpi_notify_value_names[] = {
- "Bus Check",
- "Device Check",
- "Device Wake",
- "Eject Request",
- "Device Check Light",
- "Frequency Mismatch",
- "Bus Mode Mismatch",
- "Power Fault"
-};
-#endif
-
/* Pointer to FACS needed for the Global Lock */
-
static struct acpi_table_facs *facs = NULL;
/* Local prototypes */
@@ -94,7 +79,6 @@ u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node)
switch (node->type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
- case ACPI_TYPE_POWER:
case ACPI_TYPE_THERMAL:
/*
* These are the ONLY objects that can receive ACPI notifications
@@ -139,17 +123,9 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
* initiate soft-off or sleep operation?
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Dispatching Notify(%X) on node %p\n", notify_value,
- node));
-
- if (notify_value <= 7) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notify value: %s\n",
- acpi_notify_value_names[notify_value]));
- } else {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Notify value: 0x%2.2X **Device Specific**\n",
- notify_value));
- }
+ "Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
+ acpi_ut_get_node_name(node), node, notify_value,
+ acpi_ut_get_notify_name(notify_value)));
/* Get the notify object attached to the NS Node */
@@ -159,10 +135,12 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
/* We have the notify object, Get the right handler */
switch (node->type) {
+
+ /* Notify allowed only on these types */
+
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_PROCESSOR:
- case ACPI_TYPE_POWER:
if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
handler_obj =
@@ -179,8 +157,13 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
}
}
- /* If there is any handler to run, schedule the dispatcher */
-
+ /*
+ * If there is any handler to run, schedule the dispatcher.
+ * Check for:
+ * 1) Global system notify handler
+ * 2) Global device notify handler
+ * 3) Per-device notify handler
+ */
if ((acpi_gbl_system_notify.handler
&& (notify_value <= ACPI_MAX_SYS_NOTIFY))
|| (acpi_gbl_device_notify.handler
@@ -190,6 +173,13 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
return (AE_NO_MEMORY);
}
+ if (!handler_obj) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Executing system notify handler for Notify (%4.4s, %X) node %p\n",
+ acpi_ut_get_node_name(node),
+ notify_value, node));
+ }
+
notify_info->common.descriptor_type =
ACPI_DESC_TYPE_STATE_NOTIFY;
notify_info->notify.node = node;
@@ -202,15 +192,12 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
if (ACPI_FAILURE(status)) {
acpi_ut_delete_generic_state(notify_info);
}
- }
-
- if (!handler_obj) {
+ } else {
/*
- * There is no per-device notify handler for this device.
- * This may or may not be a problem.
+ * There is no notify handler (per-device or system) for this device.
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "No notify handler for Notify(%4.4s, %X) node %p\n",
+ "No notify handler for Notify (%4.4s, %X) node %p\n",
acpi_ut_get_node_name(node), notify_value,
node));
}
@@ -349,9 +336,10 @@ acpi_status acpi_ev_init_global_lock_handler(void)
ACPI_FUNCTION_TRACE(ev_init_global_lock_handler);
- status =
- acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
- (struct acpi_table_header **)&facs);
+ status = acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
+ ACPI_CAST_INDIRECT_PTR(struct
+ acpi_table_header,
+ &facs));
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
@@ -439,7 +427,8 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout)
* Only one thread can acquire the GL at a time, the global_lock_mutex
* enforces this. This interface releases the interpreter if we must wait.
*/
- status = acpi_ex_system_wait_mutex(acpi_gbl_global_lock_mutex, 0);
+ status = acpi_ex_system_wait_mutex(
+ acpi_gbl_global_lock_mutex->mutex.os_mutex, 0);
if (status == AE_TIME) {
if (acpi_ev_global_lock_thread_id == acpi_os_get_thread_id()) {
acpi_ev_global_lock_acquired++;
@@ -448,9 +437,9 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout)
}
if (ACPI_FAILURE(status)) {
- status =
- acpi_ex_system_wait_mutex(acpi_gbl_global_lock_mutex,
- timeout);
+ status = acpi_ex_system_wait_mutex(
+ acpi_gbl_global_lock_mutex->mutex.os_mutex,
+ timeout);
}
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
@@ -460,6 +449,19 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout)
acpi_ev_global_lock_acquired++;
/*
+ * Update the global lock handle and check for wraparound. The handle is
+ * only used for the external global lock interfaces, but it is updated
+ * here to properly handle the case where a single thread may acquire the
+ * lock via both the AML and the acpi_acquire_global_lock interfaces. The
+ * handle is therefore updated on the first acquire from a given thread
+ * regardless of where the acquisition request originated.
+ */
+ acpi_gbl_global_lock_handle++;
+ if (acpi_gbl_global_lock_handle == 0) {
+ acpi_gbl_global_lock_handle = 1;
+ }
+
+ /*
* Make sure that a global lock actually exists. If not, just treat
* the lock as a standard mutex.
*/
@@ -555,7 +557,7 @@ acpi_status acpi_ev_release_global_lock(void)
/* Release the local GL mutex */
acpi_ev_global_lock_thread_id = NULL;
acpi_ev_global_lock_acquired = 0;
- acpi_os_release_mutex(acpi_gbl_global_lock_mutex);
+ acpi_os_release_mutex(acpi_gbl_global_lock_mutex->mutex.os_mutex);
return_ACPI_STATUS(status);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-16 04:36:59 +0000