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-rw-r--r--drivers/acpi/dispatcher/dsinit.c30
-rw-r--r--drivers/acpi/dispatcher/dsmethod.c330
-rw-r--r--drivers/acpi/dispatcher/dswexec.c4
-rw-r--r--drivers/acpi/dispatcher/dswload.c49
-rw-r--r--drivers/acpi/events/evgpe.c14
-rw-r--r--drivers/acpi/executer/exconfig.c8
-rw-r--r--drivers/acpi/executer/excreate.c27
-rw-r--r--drivers/acpi/executer/exdump.c8
-rw-r--r--drivers/acpi/executer/exfldio.c71
-rw-r--r--drivers/acpi/executer/exmutex.c12
-rw-r--r--drivers/acpi/executer/exsystem.c82
-rw-r--r--drivers/acpi/hardware/hwregs.c77
-rw-r--r--drivers/acpi/namespace/nsaccess.c27
-rw-r--r--drivers/acpi/osl.c28
-rw-r--r--drivers/acpi/parser/psparse.c18
-rw-r--r--drivers/acpi/utilities/utdelete.c36
-rw-r--r--drivers/acpi/utilities/utglobal.c1
-rw-r--r--drivers/acpi/utilities/utmutex.c39
18 files changed, 450 insertions, 411 deletions
diff --git a/drivers/acpi/dispatcher/dsinit.c b/drivers/acpi/dispatcher/dsinit.c
index bbdf990e9f6..daf51b5b587 100644
--- a/drivers/acpi/dispatcher/dsinit.c
+++ b/drivers/acpi/dispatcher/dsinit.c
@@ -125,37 +125,7 @@ acpi_ds_init_one_object(acpi_handle obj_handle,
if (info->table_desc->pointer->revision == 1) {
node->flags |= ANOBJ_DATA_WIDTH_32;
}
-#ifdef ACPI_INIT_PARSE_METHODS
- /*
- * Note 11/2005: Removed this code to parse all methods during table
- * load because it causes problems if there are any errors during the
- * parse. Also, it seems like overkill and we probably don't want to
- * abort a table load because of an issue with a single method.
- */
-
- /*
- * Print a dot for each method unless we are going to print
- * the entire pathname
- */
- if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
- ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
- }
- /*
- * Always parse methods to detect errors, we will delete
- * the parse tree below
- */
- status = acpi_ds_parse_method(obj_handle);
- if (ACPI_FAILURE(status)) {
- ACPI_ERROR((AE_INFO,
- "Method %p [%4.4s] - parse failure, %s",
- obj_handle,
- acpi_ut_get_node_name(obj_handle),
- acpi_format_exception(status)));
-
- /* This parse failed, but we will continue parsing more methods */
- }
-#endif
info->method_count++;
break;
diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c
index bc9aca4e740..a39a33f4847 100644
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/dispatcher/dsmethod.c
@@ -52,6 +52,10 @@
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsmethod")
+/* Local prototypes */
+static acpi_status
+acpi_ds_create_method_mutex(union acpi_operand_object *method_desc);
+
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_error
@@ -67,6 +71,7 @@ ACPI_MODULE_NAME("dsmethod")
* Note: Allows the exception handler to change the status code
*
******************************************************************************/
+
acpi_status
acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
{
@@ -113,11 +118,51 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
/*******************************************************************************
*
+ * FUNCTION: acpi_ds_create_method_mutex
+ *
+ * PARAMETERS: obj_desc - The method object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Create a mutex object for a serialized control method
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ds_create_method_mutex(union acpi_operand_object *method_desc)
+{
+ union acpi_operand_object *mutex_desc;
+ acpi_status status;
+
+ ACPI_FUNCTION_NAME(ds_create_method_mutex);
+
+ /* Create the new mutex object */
+
+ mutex_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
+ if (!mutex_desc) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+
+ /* Create the actual OS Mutex */
+
+ status = acpi_os_create_mutex(&mutex_desc->mutex.os_mutex);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ mutex_desc->mutex.sync_level = method_desc->method.sync_level;
+ method_desc->method.mutex = mutex_desc;
+ return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ds_begin_method_execution
*
* PARAMETERS: method_node - Node of the method
* obj_desc - The method object
- * calling_method_node - Caller of this method (if non-null)
+ * walk_state - current state, NULL if not yet executing
+ * a method.
*
* RETURN: Status
*
@@ -128,9 +173,9 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
******************************************************************************/
acpi_status
-acpi_ds_begin_method_execution(struct acpi_namespace_node * method_node,
- union acpi_operand_object * obj_desc,
- struct acpi_namespace_node * calling_method_node)
+acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
+ union acpi_operand_object *obj_desc,
+ struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
@@ -149,35 +194,80 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node * method_node,
}
/*
- * If there is a concurrency limit on this method, we need to
- * obtain a unit from the method semaphore.
+ * If this method is serialized, we need to acquire the method mutex.
*/
- if (obj_desc->method.semaphore) {
+ if (obj_desc->method.method_flags & AML_METHOD_SERIALIZED) {
/*
- * Allow recursive method calls, up to the reentrancy/concurrency
- * limit imposed by the SERIALIZED rule and the sync_level method
- * parameter.
- *
- * The point of this code is to avoid permanently blocking a
- * thread that is making recursive method calls.
+ * Create a mutex for the method if it is defined to be Serialized
+ * and a mutex has not already been created. We defer the mutex creation
+ * until a method is actually executed, to minimize the object count
*/
- if (method_node == calling_method_node) {
- if (obj_desc->method.thread_count >=
- obj_desc->method.concurrency) {
- return_ACPI_STATUS(AE_AML_METHOD_LIMIT);
+ if (!obj_desc->method.mutex) {
+ status = acpi_ds_create_method_mutex(obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
}
/*
- * Get a unit from the method semaphore. This releases the
- * interpreter if we block (then reacquires it)
+ * The current_sync_level (per-thread) must be less than or equal to
+ * the sync level of the method. This mechanism provides some
+ * deadlock prevention
+ *
+ * Top-level method invocation has no walk state at this point
*/
- status =
- acpi_ex_system_wait_semaphore(obj_desc->method.semaphore,
- ACPI_WAIT_FOREVER);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ if (walk_state &&
+ (walk_state->thread->current_sync_level >
+ obj_desc->method.mutex->mutex.sync_level)) {
+ ACPI_ERROR((AE_INFO,
+ "Cannot acquire Mutex for method [%4.4s], current SyncLevel is too large (%d)",
+ acpi_ut_get_node_name(method_node),
+ walk_state->thread->current_sync_level));
+
+ return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
}
+
+ /*
+ * Obtain the method mutex if necessary. Do not acquire mutex for a
+ * recursive call.
+ */
+ if (!walk_state ||
+ !obj_desc->method.mutex->mutex.owner_thread ||
+ (walk_state->thread !=
+ obj_desc->method.mutex->mutex.owner_thread)) {
+ /*
+ * Acquire the method mutex. This releases the interpreter if we
+ * block (and reacquires it before it returns)
+ */
+ status =
+ acpi_ex_system_wait_mutex(obj_desc->method.mutex->
+ mutex.os_mutex,
+ ACPI_WAIT_FOREVER);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Update the mutex and walk info and save the original sync_level */
+
+ if (walk_state) {
+ obj_desc->method.mutex->mutex.
+ original_sync_level =
+ walk_state->thread->current_sync_level;
+
+ obj_desc->method.mutex->mutex.owner_thread =
+ walk_state->thread;
+ walk_state->thread->current_sync_level =
+ obj_desc->method.sync_level;
+ } else {
+ obj_desc->method.mutex->mutex.
+ original_sync_level =
+ obj_desc->method.mutex->mutex.sync_level;
+ }
+ }
+
+ /* Always increase acquisition depth */
+
+ obj_desc->method.mutex->mutex.acquisition_depth++;
}
/*
@@ -200,10 +290,10 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node * method_node,
return_ACPI_STATUS(status);
cleanup:
- /* On error, must signal the method semaphore if present */
+ /* On error, must release the method mutex (if present) */
- if (obj_desc->method.semaphore) {
- (void)acpi_os_signal_semaphore(obj_desc->method.semaphore, 1);
+ if (obj_desc->method.mutex) {
+ acpi_os_release_mutex(obj_desc->method.mutex->mutex.os_mutex);
}
return_ACPI_STATUS(status);
}
@@ -253,10 +343,10 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
return_ACPI_STATUS(AE_NULL_OBJECT);
}
- /* Init for new method, possibly wait on concurrency semaphore */
+ /* Init for new method, possibly wait on method mutex */
status = acpi_ds_begin_method_execution(method_node, obj_desc,
- this_walk_state->method_node);
+ this_walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
@@ -478,6 +568,8 @@ acpi_ds_restart_control_method(struct acpi_walk_state *walk_state,
* created, delete all locals and arguments, and delete the parse
* tree if requested.
*
+ * MUTEX: Interpreter is locked
+ *
******************************************************************************/
void
@@ -503,26 +595,21 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
}
/*
- * Lock the parser while we terminate this method.
- * If this is the last thread executing the method,
- * we have additional cleanup to perform
+ * If method is serialized, release the mutex and restore the
+ * current sync level for this thread
*/
- status = acpi_ut_acquire_mutex(ACPI_MTX_CONTROL_METHOD);
- if (ACPI_FAILURE(status)) {
- return_VOID;
- }
+ if (method_desc->method.mutex) {
- /* Signal completion of the execution of this method if necessary */
+ /* Acquisition Depth handles recursive calls */
- if (method_desc->method.semaphore) {
- status =
- acpi_os_signal_semaphore(method_desc->method.semaphore, 1);
- if (ACPI_FAILURE(status)) {
-
- /* Ignore error and continue */
+ method_desc->method.mutex->mutex.acquisition_depth--;
+ if (!method_desc->method.mutex->mutex.acquisition_depth) {
+ walk_state->thread->current_sync_level =
+ method_desc->method.mutex->mutex.
+ original_sync_level;
- ACPI_EXCEPTION((AE_INFO, status,
- "Could not signal method semaphore"));
+ acpi_os_release_mutex(method_desc->method.mutex->mutex.
+ os_mutex);
}
}
@@ -537,7 +624,7 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
- goto exit;
+ return_VOID;
}
/*
@@ -580,18 +667,16 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
/*
* Support to dynamically change a method from not_serialized to
* Serialized if it appears that the method is incorrectly written and
- * does not support multiple thread execution. The best example of this
- * is if such a method creates namespace objects and blocks. A second
+ * does not support multiple thread execution. The best example of this
+ * is if such a method creates namespace objects and blocks. A second
* thread will fail with an AE_ALREADY_EXISTS exception
*
* This code is here because we must wait until the last thread exits
* before creating the synchronization semaphore.
*/
- if ((method_desc->method.concurrency == 1) &&
- (!method_desc->method.semaphore)) {
- status = acpi_os_create_semaphore(1, 1,
- &method_desc->method.
- semaphore);
+ if ((method_desc->method.method_flags & AML_METHOD_SERIALIZED)
+ && (!method_desc->method.mutex)) {
+ status = acpi_ds_create_method_mutex(method_desc);
}
/* No more threads, we can free the owner_id */
@@ -599,144 +684,5 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
acpi_ut_release_owner_id(&method_desc->method.owner_id);
}
- exit:
- (void)acpi_ut_release_mutex(ACPI_MTX_CONTROL_METHOD);
return_VOID;
}
-
-#ifdef ACPI_INIT_PARSE_METHODS
- /*
- * Note 11/2005: Removed this code to parse all methods during table
- * load because it causes problems if there are any errors during the
- * parse. Also, it seems like overkill and we probably don't want to
- * abort a table load because of an issue with a single method.
- */
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ds_parse_method
- *
- * PARAMETERS: Node - Method node
- *
- * RETURN: Status
- *
- * DESCRIPTION: Parse the AML that is associated with the method.
- *
- * MUTEX: Assumes parser is locked
- *
- ******************************************************************************/
-
-acpi_status acpi_ds_parse_method(struct acpi_namespace_node *node)
-{
- acpi_status status;
- union acpi_operand_object *obj_desc;
- union acpi_parse_object *op;
- struct acpi_walk_state *walk_state;
-
- ACPI_FUNCTION_TRACE_PTR(ds_parse_method, node);
-
- /* Parameter Validation */
-
- if (!node) {
- return_ACPI_STATUS(AE_NULL_ENTRY);
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
- "**** Parsing [%4.4s] **** NamedObj=%p\n",
- acpi_ut_get_node_name(node), node));
-
- /* Extract the method object from the method Node */
-
- obj_desc = acpi_ns_get_attached_object(node);
- if (!obj_desc) {
- return_ACPI_STATUS(AE_NULL_OBJECT);
- }
-
- /* Create a mutex for the method if there is a concurrency limit */
-
- if ((obj_desc->method.concurrency != ACPI_INFINITE_CONCURRENCY) &&
- (!obj_desc->method.semaphore)) {
- status = acpi_os_create_semaphore(obj_desc->method.concurrency,
- obj_desc->method.concurrency,
- &obj_desc->method.semaphore);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
- }
-
- /*
- * Allocate a new parser op to be the root of the parsed
- * method tree
- */
- op = acpi_ps_alloc_op(AML_METHOD_OP);
- if (!op) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- /* Init new op with the method name and pointer back to the Node */
-
- acpi_ps_set_name(op, node->name.integer);
- op->common.node = node;
-
- /*
- * Get a new owner_id for objects created by this method. Namespace
- * objects (such as Operation Regions) can be created during the
- * first pass parse.
- */
- status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- /* Create and initialize a new walk state */
-
- walk_state =
- acpi_ds_create_walk_state(obj_desc->method.owner_id, NULL, NULL,
- NULL);
- if (!walk_state) {
- status = AE_NO_MEMORY;
- goto cleanup2;
- }
-
- status = acpi_ds_init_aml_walk(walk_state, op, node,
- obj_desc->method.aml_start,
- obj_desc->method.aml_length, NULL, 1);
- if (ACPI_FAILURE(status)) {
- acpi_ds_delete_walk_state(walk_state);
- goto cleanup2;
- }
-
- /*
- * Parse the method, first pass
- *
- * The first pass load is where newly declared named objects are added into
- * the namespace. Actual evaluation of the named objects (what would be
- * called a "second pass") happens during the actual execution of the
- * method so that operands to the named objects can take on dynamic
- * run-time values.
- */
- status = acpi_ps_parse_aml(walk_state);
- if (ACPI_FAILURE(status)) {
- goto cleanup2;
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
- "**** [%4.4s] Parsed **** NamedObj=%p Op=%p\n",
- acpi_ut_get_node_name(node), node, op));
-
- /*
- * Delete the parse tree. We simply re-parse the method for every
- * execution since there isn't much overhead (compared to keeping lots
- * of parse trees around)
- */
- acpi_ns_delete_namespace_subtree(node);
- acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);
-
- cleanup2:
- acpi_ut_release_owner_id(&obj_desc->method.owner_id);
-
- cleanup:
- acpi_ps_delete_parse_tree(op);
- return_ACPI_STATUS(status);
-}
-#endif
diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c
index 3acbd9145d7..b1ded62d0df 100644
--- a/drivers/acpi/dispatcher/dswexec.c
+++ b/drivers/acpi/dispatcher/dswexec.c
@@ -472,7 +472,6 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
acpi_ds_result_push(walk_state->result_obj,
walk_state);
}
-
break;
default:
@@ -510,6 +509,7 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Method Reference in a Package, Op=%p\n",
op));
+
op->common.node =
(struct acpi_namespace_node *)op->asl.value.
arg->asl.node->object;
@@ -670,7 +670,6 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
status = acpi_ds_result_stack_pop(walk_state);
}
-
break;
case AML_TYPE_UNDEFINED:
@@ -708,7 +707,6 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
* Check if we just completed the evaluation of a
* conditional predicate
*/
-
if ((ACPI_SUCCESS(status)) &&
(walk_state->control_state) &&
(walk_state->control_state->common.state ==
diff --git a/drivers/acpi/dispatcher/dswload.c b/drivers/acpi/dispatcher/dswload.c
index 35074399c61..e3ca7f6539c 100644
--- a/drivers/acpi/dispatcher/dswload.c
+++ b/drivers/acpi/dispatcher/dswload.c
@@ -175,7 +175,7 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
if (status == AE_NOT_FOUND) {
/*
* Table disassembly:
- * Target of Scope() not found. Generate an External for it, and
+ * Target of Scope() not found. Generate an External for it, and
* insert the name into the namespace.
*/
acpi_dm_add_to_external_list(path, ACPI_TYPE_DEVICE, 0);
@@ -210,16 +210,15 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
case ACPI_TYPE_BUFFER:
/*
- * These types we will allow, but we will change the type. This
+ * These types we will allow, but we will change the type. This
* enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*
- * Note: silently change the type here. On the second pass, we will report
+ * Note: silently change the type here. On the second pass, we will report
* a warning
*/
-
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
path,
@@ -242,7 +241,6 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
break;
default:
-
/*
* For all other named opcodes, we will enter the name into
* the namespace.
@@ -259,7 +257,6 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
* buffer_field, or Package), the name of the object is already
* in the namespace.
*/
-
if (walk_state->deferred_node) {
/* This name is already in the namespace, get the node */
@@ -293,8 +290,8 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
}
/*
- * Enter the named type into the internal namespace. We enter the name
- * as we go downward in the parse tree. Any necessary subobjects that
+ * Enter the named type into the internal namespace. We enter the name
+ * as we go downward in the parse tree. Any necessary subobjects that
* involve arguments to the opcode must be created as we go back up the
* parse tree later.
*/
@@ -327,12 +324,12 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
(status);
}
}
+
status = AE_OK;
}
}
if (ACPI_FAILURE(status)) {
-
ACPI_ERROR_NAMESPACE(path, status);
return_ACPI_STATUS(status);
}
@@ -434,9 +431,13 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
status =
acpi_ex_create_region(op->named.data,
op->named.length,
- (acpi_adr_space_type)
- ((op->common.value.arg)->
- common.value.integer),
+ (acpi_adr_space_type) ((op->
+ common.
+ value.
+ arg)->
+ common.
+ value.
+ integer),
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
@@ -474,7 +475,7 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
* method_op pkg_length name_string method_flags term_list
*
* Note: We must create the method node/object pair as soon as we
- * see the method declaration. This allows later pass1 parsing
+ * see the method declaration. This allows later pass1 parsing
* of invocations of the method (need to know the number of
* arguments.)
*/
@@ -499,6 +500,7 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
length,
walk_state);
}
+
walk_state->operands[0] = NULL;
walk_state->num_operands = 0;
@@ -570,7 +572,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
(walk_state->op_info->class == AML_CLASS_CONTROL)) {
-
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Begin/EXEC: %s (fl %8.8X)\n",
walk_state->op_info->name,
@@ -602,7 +603,7 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
} else {
/* Get name from the op */
- buffer_ptr = (char *)&op->named.name;
+ buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
}
} else {
/* Get the namestring from the raw AML */
@@ -629,7 +630,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
break;
case AML_INT_NAMEPATH_OP:
-
/*
* The name_path is an object reference to an existing object.
* Don't enter the name into the namespace, but look it up
@@ -642,7 +642,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
break;
case AML_SCOPE_OP:
-
/*
* The Path is an object reference to an existing object.
* Don't enter the name into the namespace, but look it up
@@ -664,6 +663,7 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
#endif
return_ACPI_STATUS(status);
}
+
/*
* We must check to make sure that the target is
* one of the opcodes that actually opens a scope
@@ -683,13 +683,12 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
case ACPI_TYPE_BUFFER:
/*
- * These types we will allow, but we will change the type. This
+ * These types we will allow, but we will change the type. This
* enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*/
-
ACPI_WARNING((AE_INFO,
"Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)",
buffer_ptr,
@@ -729,14 +728,14 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
-
}
+
return_ACPI_STATUS(AE_OK);
}
/*
- * Enter the named type into the internal namespace. We enter the name
- * as we go downward in the parse tree. Any necessary subobjects that
+ * Enter the named type into the internal namespace. We enter the name
+ * as we go downward in the parse tree. Any necessary subobjects that
* involve arguments to the opcode must be created as we go back up the
* parse tree later.
*
@@ -787,7 +786,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
* can get it again quickly when this scope is closed
*/
op->common.node = node;
-
return_ACPI_STATUS(status);
}
@@ -922,7 +920,6 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
#ifndef ACPI_NO_METHOD_EXECUTION
case AML_TYPE_CREATE_FIELD:
-
/*
* Create the field object, but the field buffer and index must
* be evaluated later during the execution phase
@@ -931,7 +928,6 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
break;
case AML_TYPE_NAMED_FIELD:
-
/*
* If we are executing a method, initialize the field
*/
@@ -1051,6 +1047,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
* argument is the space_id. (We must save the address of the
* AML of the address and length operands)
*/
+
/*
* If we have a valid region, initialize it
* Namespace is NOT locked at this point.
@@ -1080,7 +1077,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
* method_op pkg_length name_string method_flags term_list
*
* Note: We must create the method node/object pair as soon as we
- * see the method declaration. This allows later pass1 parsing
+ * see the method declaration. This allows later pass1 parsing
* of invocations of the method (need to know the number of
* arguments.)
*/
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index f01d339407f..c76c0583ca6 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -382,7 +382,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
u32 status_reg;
u32 enable_reg;
acpi_cpu_flags flags;
- acpi_cpu_flags hw_flags;
acpi_native_uint i;
acpi_native_uint j;
@@ -394,8 +393,11 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
return (int_status);
}
- /* We need to hold the GPE lock now, hardware lock in the loop */
-
+ /*
+ * We need to obtain the GPE lock for both the data structs and registers
+ * Note: Not necessary to obtain the hardware lock, since the GPE registers
+ * are owned by the gpe_lock.
+ */
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Examine all GPE blocks attached to this interrupt level */
@@ -413,8 +415,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
gpe_register_info = &gpe_block->register_info[i];
- hw_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
-
/* Read the Status Register */
status =
@@ -423,8 +423,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
&gpe_register_info->
status_address);
if (ACPI_FAILURE(status)) {
- acpi_os_release_lock(acpi_gbl_hardware_lock,
- hw_flags);
goto unlock_and_exit;
}
@@ -435,8 +433,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
&enable_reg,
&gpe_register_info->
enable_address);
- acpi_os_release_lock(acpi_gbl_hardware_lock, hw_flags);
-
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
diff --git a/drivers/acpi/executer/exconfig.c b/drivers/acpi/executer/exconfig.c
index 823352435e0..83fed079a27 100644
--- a/drivers/acpi/executer/exconfig.c
+++ b/drivers/acpi/executer/exconfig.c
@@ -266,6 +266,10 @@ acpi_ex_load_table_op(struct acpi_walk_state *walk_state,
}
}
+ ACPI_INFO((AE_INFO,
+ "Dynamic OEM Table Load - [%4.4s] OemId [%6.6s] OemTableId [%8.8s]",
+ table->signature, table->oem_id, table->oem_table_id));
+
*return_desc = ddb_handle;
return_ACPI_STATUS(status);
}
@@ -446,6 +450,10 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(status);
}
+ ACPI_INFO((AE_INFO,
+ "Dynamic SSDT Load - OemId [%6.6s] OemTableId [%8.8s]",
+ table_ptr->oem_id, table_ptr->oem_table_id));
+
cleanup:
if (ACPI_FAILURE(status)) {
ACPI_FREE(table_ptr);
diff --git a/drivers/acpi/executer/excreate.c b/drivers/acpi/executer/excreate.c
index 106dc7219df..34eec82c1b1 100644
--- a/drivers/acpi/executer/excreate.c
+++ b/drivers/acpi/executer/excreate.c
@@ -177,7 +177,7 @@ acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state)
* that the event is created in an unsignalled state
*/
status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
- &obj_desc->event.semaphore);
+ &obj_desc->event.os_semaphore);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
@@ -226,12 +226,9 @@ acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state)
goto cleanup;
}
- /*
- * Create the actual OS semaphore.
- * One unit max to make it a mutex, with one initial unit to allow
- * the mutex to be acquired.
- */
- status = acpi_os_create_semaphore(1, 1, &obj_desc->mutex.semaphore);
+ /* Create the actual OS Mutex */
+
+ status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
@@ -565,7 +562,7 @@ acpi_ex_create_method(u8 * aml_start,
obj_desc->method.aml_length = aml_length;
/*
- * Disassemble the method flags. Split off the Arg Count
+ * Disassemble the method flags. Split off the Arg Count
* for efficiency
*/
method_flags = (u8) operand[1]->integer.value;
@@ -576,21 +573,19 @@ acpi_ex_create_method(u8 * aml_start,
(u8) (method_flags & AML_METHOD_ARG_COUNT);
/*
- * Get the concurrency count. If required, a semaphore will be
+ * Get the sync_level. If method is serialized, a mutex will be
* created for this method when it is parsed.
*/
if (acpi_gbl_all_methods_serialized) {
- obj_desc->method.concurrency = 1;
+ obj_desc->method.sync_level = 0;
obj_desc->method.method_flags |= AML_METHOD_SERIALIZED;
} else if (method_flags & AML_METHOD_SERIALIZED) {
/*
- * ACPI 1.0: Concurrency = 1
- * ACPI 2.0: Concurrency = (sync_level (in method declaration) + 1)
+ * ACPI 1.0: sync_level = 0
+ * ACPI 2.0: sync_level = sync_level in method declaration
*/
- obj_desc->method.concurrency = (u8)
- (((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4) + 1);
- } else {
- obj_desc->method.concurrency = ACPI_INFINITE_CONCURRENCY;
+ obj_desc->method.sync_level = (u8)
+ ((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4);
}
/* Attach the new object to the method Node */
diff --git a/drivers/acpi/executer/exdump.c b/drivers/acpi/executer/exdump.c
index 7b9718e976b..2450943add3 100644
--- a/drivers/acpi/executer/exdump.c
+++ b/drivers/acpi/executer/exdump.c
@@ -118,14 +118,14 @@ static struct acpi_exdump_info acpi_ex_dump_device[4] = {
static struct acpi_exdump_info acpi_ex_dump_event[2] = {
{ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_event), NULL},
- {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(event.semaphore), "Semaphore"}
+ {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(event.os_semaphore), "OsSemaphore"}
};
static struct acpi_exdump_info acpi_ex_dump_method[8] = {
{ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_method), NULL},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.param_count), "ParamCount"},
- {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.concurrency), "Concurrency"},
- {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(method.semaphore), "Semaphore"},
+ {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.sync_level), "Sync Level"},
+ {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(method.mutex), "Mutex"},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.owner_id), "Owner Id"},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.thread_count), "Thread Count"},
{ACPI_EXD_UINT32, ACPI_EXD_OFFSET(method.aml_length), "Aml Length"},
@@ -138,7 +138,7 @@ static struct acpi_exdump_info acpi_ex_dump_mutex[5] = {
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.owner_thread), "Owner Thread"},
{ACPI_EXD_UINT16, ACPI_EXD_OFFSET(mutex.acquisition_depth),
"Acquire Depth"},
- {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.semaphore), "Semaphore"}
+ {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.os_mutex), "OsMutex"}
};
static struct acpi_exdump_info acpi_ex_dump_region[7] = {
diff --git a/drivers/acpi/executer/exfldio.c b/drivers/acpi/executer/exfldio.c
index 051053f7ccc..40f0bee6faa 100644
--- a/drivers/acpi/executer/exfldio.c
+++ b/drivers/acpi/executer/exfldio.c
@@ -727,11 +727,23 @@ acpi_ex_extract_from_field(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(status);
}
- /* Merge with previous datum if necessary */
-
- merged_datum |= raw_datum <<
- (obj_desc->common_field.access_bit_width -
- obj_desc->common_field.start_field_bit_offset);
+ /*
+ * Merge with previous datum if necessary.
+ *
+ * Note: Before the shift, check if the shift value will be larger than
+ * the integer size. If so, there is no need to perform the operation.
+ * This avoids the differences in behavior between different compilers
+ * concerning shift values larger than the target data width.
+ */
+ if ((obj_desc->common_field.access_bit_width -
+ obj_desc->common_field.start_field_bit_offset) <
+ ACPI_INTEGER_BIT_SIZE) {
+ merged_datum |=
+ raw_datum << (obj_desc->common_field.
+ access_bit_width -
+ obj_desc->common_field.
+ start_field_bit_offset);
+ }
if (i == datum_count) {
break;
@@ -808,13 +820,23 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(AE_BUFFER_OVERFLOW);
}
- /* Compute the number of datums (access width data items) */
+ /*
+ * Create the bitmasks used for bit insertion.
+ * Note: This if/else is used to bypass compiler differences with the
+ * shift operator
+ */
+ if (obj_desc->common_field.access_bit_width == ACPI_INTEGER_BIT_SIZE) {
+ width_mask = ACPI_INTEGER_MAX;
+ } else {
+ width_mask =
+ ACPI_MASK_BITS_ABOVE(obj_desc->common_field.
+ access_bit_width);
+ }
- width_mask =
- ACPI_MASK_BITS_ABOVE(obj_desc->common_field.access_bit_width);
- mask =
- width_mask & ACPI_MASK_BITS_BELOW(obj_desc->common_field.
- start_field_bit_offset);
+ mask = width_mask &
+ ACPI_MASK_BITS_BELOW(obj_desc->common_field.start_field_bit_offset);
+
+ /* Compute the number of datums (access width data items) */
datum_count = ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length,
obj_desc->common_field.access_bit_width);
@@ -848,12 +870,29 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(status);
}
- /* Start new output datum by merging with previous input datum */
-
field_offset += obj_desc->common_field.access_byte_width;
- merged_datum = raw_datum >>
- (obj_desc->common_field.access_bit_width -
- obj_desc->common_field.start_field_bit_offset);
+
+ /*
+ * Start new output datum by merging with previous input datum
+ * if necessary.
+ *
+ * Note: Before the shift, check if the shift value will be larger than
+ * the integer size. If so, there is no need to perform the operation.
+ * This avoids the differences in behavior between different compilers
+ * concerning shift values larger than the target data width.
+ */
+ if ((obj_desc->common_field.access_bit_width -
+ obj_desc->common_field.start_field_bit_offset) <
+ ACPI_INTEGER_BIT_SIZE) {
+ merged_datum =
+ raw_datum >> (obj_desc->common_field.
+ access_bit_width -
+ obj_desc->common_field.
+ start_field_bit_offset);
+ } else {
+ merged_datum = 0;
+ }
+
mask = width_mask;
if (i == datum_count) {
diff --git a/drivers/acpi/executer/exmutex.c b/drivers/acpi/executer/exmutex.c
index 93098d68cad..d8ac2877cf0 100644
--- a/drivers/acpi/executer/exmutex.c
+++ b/drivers/acpi/executer/exmutex.c
@@ -161,12 +161,13 @@ acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
/*
* Current Sync must be less than or equal to the sync level of the
- * mutex. This mechanism provides some deadlock prevention
+ * mutex. This mechanism provides some deadlock prevention
*/
if (walk_state->thread->current_sync_level > obj_desc->mutex.sync_level) {
ACPI_ERROR((AE_INFO,
- "Cannot acquire Mutex [%4.4s], incorrect SyncLevel",
- acpi_ut_get_node_name(obj_desc->mutex.node)));
+ "Cannot acquire Mutex [%4.4s], current SyncLevel is too large (%d)",
+ acpi_ut_get_node_name(obj_desc->mutex.node),
+ walk_state->thread->current_sync_level));
return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
}
@@ -178,8 +179,7 @@ acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
if ((obj_desc->mutex.owner_thread->thread_id ==
walk_state->thread->thread_id) ||
- (obj_desc->mutex.semaphore ==
- acpi_gbl_global_lock_semaphore)) {
+ (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK)) {
/*
* The mutex is already owned by this thread,
* just increment the acquisition depth
@@ -264,7 +264,7 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
*/
if ((obj_desc->mutex.owner_thread->thread_id !=
walk_state->thread->thread_id)
- && (obj_desc->mutex.semaphore != acpi_gbl_global_lock_semaphore)) {
+ && (obj_desc->mutex.os_mutex != ACPI_GLOBAL_LOCK)) {
ACPI_ERROR((AE_INFO,
"Thread %X cannot release Mutex [%4.4s] acquired by thread %X",
walk_state->thread->thread_id,
diff --git a/drivers/acpi/executer/exsystem.c b/drivers/acpi/executer/exsystem.c
index 52beee3674a..6b5d1e6ce94 100644
--- a/drivers/acpi/executer/exsystem.c
+++ b/drivers/acpi/executer/exsystem.c
@@ -63,14 +63,14 @@ ACPI_MODULE_NAME("exsystem")
* interpreter is released.
*
******************************************************************************/
-acpi_status acpi_ex_system_wait_semaphore(acpi_handle semaphore, u16 timeout)
+acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout)
{
acpi_status status;
acpi_status status2;
ACPI_FUNCTION_TRACE(ex_system_wait_semaphore);
- status = acpi_os_wait_semaphore(semaphore, 1, 0);
+ status = acpi_os_wait_semaphore(semaphore, 1, ACPI_DO_NOT_WAIT);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
@@ -103,6 +103,59 @@ acpi_status acpi_ex_system_wait_semaphore(acpi_handle semaphore, u16 timeout)
/*******************************************************************************
*
+ * FUNCTION: acpi_ex_system_wait_mutex
+ *
+ * PARAMETERS: Mutex - Mutex to wait on
+ * Timeout - Max time to wait
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Implements a semaphore wait with a check to see if the
+ * semaphore is available immediately. If it is not, the
+ * interpreter is released.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout)
+{
+ acpi_status status;
+ acpi_status status2;
+
+ ACPI_FUNCTION_TRACE(ex_system_wait_mutex);
+
+ status = acpi_os_acquire_mutex(mutex, ACPI_DO_NOT_WAIT);
+ if (ACPI_SUCCESS(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ if (status == AE_TIME) {
+
+ /* We must wait, so unlock the interpreter */
+
+ acpi_ex_exit_interpreter();
+
+ status = acpi_os_acquire_mutex(mutex, timeout);
+
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "*** Thread awake after blocking, %s\n",
+ acpi_format_exception(status)));
+
+ /* Reacquire the interpreter */
+
+ status2 = acpi_ex_enter_interpreter();
+ if (ACPI_FAILURE(status2)) {
+
+ /* Report fatal error, could not acquire interpreter */
+
+ return_ACPI_STATUS(status2);
+ }
+ }
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ex_system_do_stall
*
* PARAMETERS: how_long - The amount of time to stall,
@@ -176,7 +229,7 @@ acpi_status acpi_ex_system_do_suspend(acpi_integer how_long)
*
* FUNCTION: acpi_ex_system_acquire_mutex
*
- * PARAMETERS: time_desc - The 'time to delay' object descriptor
+ * PARAMETERS: time_desc - Maximum time to wait for the mutex
* obj_desc - The object descriptor for this op
*
* RETURN: Status
@@ -201,14 +254,14 @@ acpi_ex_system_acquire_mutex(union acpi_operand_object * time_desc,
/* Support for the _GL_ Mutex object -- go get the global lock */
- if (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore) {
+ if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) {
status =
acpi_ev_acquire_global_lock((u16) time_desc->integer.value);
return_ACPI_STATUS(status);
}
- status = acpi_ex_system_wait_semaphore(obj_desc->mutex.semaphore,
- (u16) time_desc->integer.value);
+ status = acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex,
+ (u16) time_desc->integer.value);
return_ACPI_STATUS(status);
}
@@ -239,13 +292,13 @@ acpi_status acpi_ex_system_release_mutex(union acpi_operand_object *obj_desc)
/* Support for the _GL_ Mutex object -- release the global lock */
- if (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore) {
+ if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) {
status = acpi_ev_release_global_lock();
return_ACPI_STATUS(status);
}
- status = acpi_os_signal_semaphore(obj_desc->mutex.semaphore, 1);
- return_ACPI_STATUS(status);
+ acpi_os_release_mutex(obj_desc->mutex.os_mutex);
+ return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
@@ -268,7 +321,8 @@ acpi_status acpi_ex_system_signal_event(union acpi_operand_object *obj_desc)
ACPI_FUNCTION_TRACE(ex_system_signal_event);
if (obj_desc) {
- status = acpi_os_signal_semaphore(obj_desc->event.semaphore, 1);
+ status =
+ acpi_os_signal_semaphore(obj_desc->event.os_semaphore, 1);
}
return_ACPI_STATUS(status);
@@ -299,7 +353,7 @@ acpi_ex_system_wait_event(union acpi_operand_object *time_desc,
if (obj_desc) {
status =
- acpi_ex_system_wait_semaphore(obj_desc->event.semaphore,
+ acpi_ex_system_wait_semaphore(obj_desc->event.os_semaphore,
(u16) time_desc->integer.
value);
}
@@ -322,7 +376,7 @@ acpi_ex_system_wait_event(union acpi_operand_object *time_desc,
acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc)
{
acpi_status status = AE_OK;
- void *temp_semaphore;
+ acpi_semaphore temp_semaphore;
ACPI_FUNCTION_ENTRY();
@@ -333,8 +387,8 @@ acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc)
status =
acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, &temp_semaphore);
if (ACPI_SUCCESS(status)) {
- (void)acpi_os_delete_semaphore(obj_desc->event.semaphore);
- obj_desc->event.semaphore = temp_semaphore;
+ (void)acpi_os_delete_semaphore(obj_desc->event.os_semaphore);
+ obj_desc->event.os_semaphore = temp_semaphore;
}
return (status);
diff --git a/drivers/acpi/hardware/hwregs.c b/drivers/acpi/hardware/hwregs.c
index ae142de1950..3143f36fcec 100644
--- a/drivers/acpi/hardware/hwregs.c
+++ b/drivers/acpi/hardware/hwregs.c
@@ -172,9 +172,9 @@ acpi_get_sleep_type_data(u8 sleep_state, u8 * sleep_type_a, u8 * sleep_type_b)
}
/*
- * The package must have at least two elements. NOTE (March 2005): This
+ * The package must have at least two elements. NOTE (March 2005): This
* goes against the current ACPI spec which defines this object as a
- * package with one encoded DWORD element. However, existing practice
+ * package with one encoded DWORD element. However, existing practice
* by BIOS vendors seems to be to have 2 or more elements, at least
* one per sleep type (A/B).
*/
@@ -255,7 +255,7 @@ struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id)
* return_value - Value that was read from the register
* Flags - Lock the hardware or not
*
- * RETURN: Status and the value read from specified Register. Value
+ * RETURN: Status and the value read from specified Register. Value
* returned is normalized to bit0 (is shifted all the way right)
*
* DESCRIPTION: ACPI bit_register read function.
@@ -361,8 +361,8 @@ acpi_status acpi_set_register(u32 register_id, u32 value, u32 flags)
case ACPI_REGISTER_PM1_STATUS:
/*
- * Status Registers are different from the rest. Clear by
- * writing 1, and writing 0 has no effect. So, the only relevant
+ * Status Registers are different from the rest. Clear by
+ * writing 1, and writing 0 has no effect. So, the only relevant
* information is the single bit we're interested in, all others should
* be written as 0 so they will be left unchanged.
*/
@@ -467,14 +467,13 @@ ACPI_EXPORT_SYMBOL(acpi_set_register)
*
* FUNCTION: acpi_hw_register_read
*
- * PARAMETERS: use_lock - Mutex hw access
- * register_id - register_iD + Offset
+ * PARAMETERS: use_lock - Lock hardware? True/False
+ * register_id - ACPI Register ID
* return_value - Where the register value is returned
*
* RETURN: Status and the value read.
*
- * DESCRIPTION: Acpi register read function. Registers are read at the
- * given offset.
+ * DESCRIPTION: Read from the specified ACPI register
*
******************************************************************************/
acpi_status
@@ -580,14 +579,26 @@ acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value)
*
* FUNCTION: acpi_hw_register_write
*
- * PARAMETERS: use_lock - Mutex hw access
- * register_id - register_iD + Offset
+ * PARAMETERS: use_lock - Lock hardware? True/False
+ * register_id - ACPI Register ID
* Value - The value to write
*
* RETURN: Status
*
- * DESCRIPTION: Acpi register Write function. Registers are written at the
- * given offset.
+ * DESCRIPTION: Write to the specified ACPI register
+ *
+ * NOTE: In accordance with the ACPI specification, this function automatically
+ * preserves the value of the following bits, meaning that these bits cannot be
+ * changed via this interface:
+ *
+ * PM1_CONTROL[0] = SCI_EN
+ * PM1_CONTROL[9]
+ * PM1_STATUS[11]
+ *
+ * ACPI References:
+ * 1) Hardware Ignored Bits: When software writes to a register with ignored
+ * bit fields, it preserves the ignored bit fields
+ * 2) SCI_EN: OSPM always preserves this bit position
*
******************************************************************************/
@@ -595,6 +606,7 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value)
{
acpi_status status;
acpi_cpu_flags lock_flags = 0;
+ u32 read_value;
ACPI_FUNCTION_TRACE(hw_register_write);
@@ -605,6 +617,22 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value)
switch (register_id) {
case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */
+ /* Perform a read first to preserve certain bits (per ACPI spec) */
+
+ status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK,
+ ACPI_REGISTER_PM1_STATUS,
+ &read_value);
+ if (ACPI_FAILURE(status)) {
+ goto unlock_and_exit;
+ }
+
+ /* Insert the bits to be preserved */
+
+ ACPI_INSERT_BITS(value, ACPI_PM1_STATUS_PRESERVED_BITS,
+ read_value);
+
+ /* Now we can write the data */
+
status =
acpi_hw_low_level_write(16, value,
&acpi_gbl_FADT->xpm1a_evt_blk);
@@ -635,6 +663,25 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value)
case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
+ /*
+ * Perform a read first to preserve certain bits (per ACPI spec)
+ *
+ * Note: This includes SCI_EN, we never want to change this bit
+ */
+ status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK,
+ ACPI_REGISTER_PM1_CONTROL,
+ &read_value);
+ if (ACPI_FAILURE(status)) {
+ goto unlock_and_exit;
+ }
+
+ /* Insert the bits to be preserved */
+
+ ACPI_INSERT_BITS(value, ACPI_PM1_CONTROL_PRESERVED_BITS,
+ read_value);
+
+ /* Now we can write the data */
+
status =
acpi_hw_low_level_write(16, value,
&acpi_gbl_FADT->xpm1a_cnt_blk);
@@ -726,7 +773,7 @@ acpi_hw_low_level_read(u32 width, u32 * value, struct acpi_generic_address *reg)
return (AE_OK);
}
- /* Get a local copy of the address. Handles possible alignment issues */
+ /* Get a local copy of the address. Handles possible alignment issues */
ACPI_MOVE_64_TO_64(&address, &reg->address);
if (!address) {
@@ -798,7 +845,7 @@ acpi_hw_low_level_write(u32 width, u32 value, struct acpi_generic_address * reg)
return (AE_OK);
}
- /* Get a local copy of the address. Handles possible alignment issues */
+ /* Get a local copy of the address. Handles possible alignment issues */
ACPI_MOVE_64_TO_64(&address, &reg->address);
if (!address) {
diff --git a/drivers/acpi/namespace/nsaccess.c b/drivers/acpi/namespace/nsaccess.c
index 48fadade52e..c1c6c236df9 100644
--- a/drivers/acpi/namespace/nsaccess.c
+++ b/drivers/acpi/namespace/nsaccess.c
@@ -196,33 +196,30 @@ acpi_status acpi_ns_root_initialize(void)
(u8) (ACPI_TO_INTEGER(val) - 1);
if (ACPI_STRCMP(init_val->name, "_GL_") == 0) {
- /*
- * Create a counting semaphore for the
- * global lock
- */
+
+ /* Create a counting semaphore for the global lock */
+
status =
acpi_os_create_semaphore
(ACPI_NO_UNIT_LIMIT, 1,
- &obj_desc->mutex.semaphore);
+ &acpi_gbl_global_lock_semaphore);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference
(obj_desc);
goto unlock_and_exit;
}
- /*
- * We just created the mutex for the
- * global lock, save it
- */
- acpi_gbl_global_lock_semaphore =
- obj_desc->mutex.semaphore;
+ /* Mark this mutex as very special */
+
+ obj_desc->mutex.os_mutex =
+ ACPI_GLOBAL_LOCK;
} else {
/* Create a mutex */
- status = acpi_os_create_semaphore(1, 1,
- &obj_desc->
- mutex.
- semaphore);
+ status =
+ acpi_os_create_mutex(&obj_desc->
+ mutex.
+ os_mutex);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference
(obj_desc);
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 8e46d1b3949..afd937b158b 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -688,18 +688,9 @@ EXPORT_SYMBOL(acpi_os_wait_events_complete);
/*
* Allocate the memory for a spinlock and initialize it.
*/
-acpi_status acpi_os_create_lock(acpi_handle * out_handle)
+acpi_status acpi_os_create_lock(acpi_spinlock * handle)
{
- spinlock_t *lock_ptr;
-
-
- lock_ptr = acpi_os_allocate(sizeof(spinlock_t));
-
- spin_lock_init(lock_ptr);
-
- ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating spinlock[%p].\n", lock_ptr));
-
- *out_handle = lock_ptr;
+ spin_lock_init(*handle);
return AE_OK;
}
@@ -707,13 +698,8 @@ acpi_status acpi_os_create_lock(acpi_handle * out_handle)
/*
* Deallocate the memory for a spinlock.
*/
-void acpi_os_delete_lock(acpi_handle handle)
+void acpi_os_delete_lock(acpi_spinlock handle)
{
-
- ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting spinlock[%p].\n", handle));
-
- acpi_os_free(handle);
-
return;
}
@@ -1037,10 +1023,10 @@ EXPORT_SYMBOL(max_cstate);
* handle is a pointer to the spinlock_t.
*/
-acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle)
+acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp)
{
acpi_cpu_flags flags;
- spin_lock_irqsave((spinlock_t *) handle, flags);
+ spin_lock_irqsave(lockp, flags);
return flags;
}
@@ -1048,9 +1034,9 @@ acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle)
* Release a spinlock. See above.
*/
-void acpi_os_release_lock(acpi_handle handle, acpi_cpu_flags flags)
+void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags)
{
- spin_unlock_irqrestore((spinlock_t *) handle, flags);
+ spin_unlock_irqrestore(lockp, flags);
}
#ifndef ACPI_USE_LOCAL_CACHE
diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c
index 7ee2f2e7752..a02aa62fe1e 100644
--- a/drivers/acpi/parser/psparse.c
+++ b/drivers/acpi/parser/psparse.c
@@ -469,6 +469,16 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
}
walk_state->thread = thread;
+
+ /*
+ * If executing a method, the starting sync_level is this method's
+ * sync_level
+ */
+ if (walk_state->method_desc) {
+ walk_state->thread->current_sync_level =
+ walk_state->method_desc->method.sync_level;
+ }
+
acpi_ds_push_walk_state(walk_state, thread);
/*
@@ -505,6 +515,10 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
status =
acpi_ds_call_control_method(thread, walk_state,
NULL);
+ if (ACPI_FAILURE(status)) {
+ status =
+ acpi_ds_method_error(status, walk_state);
+ }
/*
* If the transfer to the new method method call worked, a new walk
@@ -525,7 +539,7 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
/* Check for possible multi-thread reentrancy problem */
if ((status == AE_ALREADY_EXISTS) &&
- (!walk_state->method_desc->method.semaphore)) {
+ (!walk_state->method_desc->method.mutex)) {
/*
* Method tried to create an object twice. The probable cause is
* that the method cannot handle reentrancy.
@@ -537,7 +551,7 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
*/
walk_state->method_desc->method.method_flags |=
AML_METHOD_SERIALIZED;
- walk_state->method_desc->method.concurrency = 1;
+ walk_state->method_desc->method.sync_level = 0;
}
}
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c
index 67b9f325c6f..38ebe1c5433 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -155,21 +155,30 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
case ACPI_TYPE_MUTEX:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
- "***** Mutex %p, Semaphore %p\n",
- object, object->mutex.semaphore));
+ "***** Mutex %p, OS Mutex %p\n",
+ object, object->mutex.os_mutex));
- acpi_ex_unlink_mutex(object);
- (void)acpi_os_delete_semaphore(object->mutex.semaphore);
+ if (object->mutex.os_mutex != ACPI_GLOBAL_LOCK) {
+ acpi_ex_unlink_mutex(object);
+ acpi_os_delete_mutex(object->mutex.os_mutex);
+ } else {
+ /* Global Lock "mutex" is actually a counting semaphore */
+
+ (void)
+ acpi_os_delete_semaphore
+ (acpi_gbl_global_lock_semaphore);
+ acpi_gbl_global_lock_semaphore = NULL;
+ }
break;
case ACPI_TYPE_EVENT:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
- "***** Event %p, Semaphore %p\n",
- object, object->event.semaphore));
+ "***** Event %p, OS Semaphore %p\n",
+ object, object->event.os_semaphore));
- (void)acpi_os_delete_semaphore(object->event.semaphore);
- object->event.semaphore = NULL;
+ (void)acpi_os_delete_semaphore(object->event.os_semaphore);
+ object->event.os_semaphore = NULL;
break;
case ACPI_TYPE_METHOD:
@@ -177,12 +186,13 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Method %p\n", object));
- /* Delete the method semaphore if it exists */
+ /* Delete the method mutex if it exists */
- if (object->method.semaphore) {
- (void)acpi_os_delete_semaphore(object->method.
- semaphore);
- object->method.semaphore = NULL;
+ if (object->method.mutex) {
+ acpi_os_delete_mutex(object->method.mutex->mutex.
+ os_mutex);
+ acpi_ut_delete_object_desc(object->method.mutex);
+ object->method.mutex = NULL;
}
break;
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index e5999c65c0b..014030af8b5 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -794,6 +794,7 @@ void acpi_ut_init_globals(void)
/* Global Lock support */
+ acpi_gbl_global_lock_semaphore = NULL;
acpi_gbl_global_lock_acquired = FALSE;
acpi_gbl_global_lock_thread_count = 0;
acpi_gbl_global_lock_handle = 0;
diff --git a/drivers/acpi/utilities/utmutex.c b/drivers/acpi/utilities/utmutex.c
index 25eb34369af..dfc8f30ca89 100644
--- a/drivers/acpi/utilities/utmutex.c
+++ b/drivers/acpi/utilities/utmutex.c
@@ -82,12 +82,9 @@ acpi_status acpi_ut_mutex_initialize(void)
/* Create the spinlocks for use at interrupt level */
- status = acpi_os_create_lock(&acpi_gbl_gpe_lock);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
+ spin_lock_init(acpi_gbl_gpe_lock);
+ spin_lock_init(acpi_gbl_hardware_lock);
- status = acpi_os_create_lock(&acpi_gbl_hardware_lock);
return_ACPI_STATUS(status);
}
@@ -146,9 +143,8 @@ static acpi_status acpi_ut_create_mutex(acpi_mutex_handle mutex_id)
}
if (!acpi_gbl_mutex_info[mutex_id].mutex) {
- status = acpi_os_create_semaphore(1, 1,
- &acpi_gbl_mutex_info
- [mutex_id].mutex);
+ status =
+ acpi_os_create_mutex(&acpi_gbl_mutex_info[mutex_id].mutex);
acpi_gbl_mutex_info[mutex_id].thread_id =
ACPI_MUTEX_NOT_ACQUIRED;
acpi_gbl_mutex_info[mutex_id].use_count = 0;
@@ -171,7 +167,6 @@ static acpi_status acpi_ut_create_mutex(acpi_mutex_handle mutex_id)
static acpi_status acpi_ut_delete_mutex(acpi_mutex_handle mutex_id)
{
- acpi_status status;
ACPI_FUNCTION_TRACE_U32(ut_delete_mutex, mutex_id);
@@ -179,12 +174,12 @@ static acpi_status acpi_ut_delete_mutex(acpi_mutex_handle mutex_id)
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- status = acpi_os_delete_semaphore(acpi_gbl_mutex_info[mutex_id].mutex);
+ acpi_os_delete_mutex(acpi_gbl_mutex_info[mutex_id].mutex);
acpi_gbl_mutex_info[mutex_id].mutex = NULL;
acpi_gbl_mutex_info[mutex_id].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
- return_ACPI_STATUS(status);
+ return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
@@ -251,8 +246,8 @@ acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id)
"Thread %X attempting to acquire Mutex [%s]\n",
this_thread_id, acpi_ut_get_mutex_name(mutex_id)));
- status = acpi_os_wait_semaphore(acpi_gbl_mutex_info[mutex_id].mutex,
- 1, ACPI_WAIT_FOREVER);
+ status = acpi_os_acquire_mutex(acpi_gbl_mutex_info[mutex_id].mutex,
+ ACPI_WAIT_FOREVER);
if (ACPI_SUCCESS(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
"Thread %X acquired Mutex [%s]\n",
@@ -284,7 +279,6 @@ acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id)
acpi_status acpi_ut_release_mutex(acpi_mutex_handle mutex_id)
{
- acpi_status status;
acpi_thread_id this_thread_id;
ACPI_FUNCTION_NAME(ut_release_mutex);
@@ -340,19 +334,6 @@ acpi_status acpi_ut_release_mutex(acpi_mutex_handle mutex_id)
acpi_gbl_mutex_info[mutex_id].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
- status =
- acpi_os_signal_semaphore(acpi_gbl_mutex_info[mutex_id].mutex, 1);
-
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Thread %X could not release Mutex [%X]",
- this_thread_id, mutex_id));
- } else {
- ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
- "Thread %X released Mutex [%s]\n",
- this_thread_id,
- acpi_ut_get_mutex_name(mutex_id)));
- }
-
- return (status);
+ acpi_os_release_mutex(acpi_gbl_mutex_info[mutex_id].mutex);
+ return (AE_OK);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 09:55:08 +0000