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Pull acpica into release branch

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This commit is contained in:
Len Brown 2006-06-29 19:55:27 -04:00
commit 9dce0e950d
28 changed files with 562 additions and 469 deletions
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30
drivers/acpi/dispatcher/dsinit.c
View File

@ -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;

330
drivers/acpi/dispatcher/dsmethod.c
View File

@ -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)
{
@ -111,13 +116,53 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
return (status);
}
/*******************************************************************************
*
* 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)) {
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;
/* Ignore error and continue */
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

4
drivers/acpi/dispatcher/dswexec.c
View File

@ -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 ==

49
drivers/acpi/dispatcher/dswload.c
View File

@ -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.)
*/

14
drivers/acpi/events/evgpe.c
View File

@ -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;
}

8
drivers/acpi/executer/exconfig.c
View File

@ -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);

27
drivers/acpi/executer/excreate.c
View File

@ -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 */

8
drivers/acpi/executer/exdump.c
View File

@ -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] = {

71
drivers/acpi/executer/exfldio.c
View File

@ -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) {

12
drivers/acpi/executer/exmutex.c
View File

@ -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,

82
drivers/acpi/executer/exsystem.c
View File

@ -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);
}
@ -101,6 +101,59 @@ acpi_status acpi_ex_system_wait_semaphore(acpi_handle semaphore, u16 timeout)
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* 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
@ -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);

77
drivers/acpi/hardware/hwregs.c
View File

@ -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) {

27
drivers/acpi/namespace/nsaccess.c
View File

@ -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);

28
drivers/acpi/osl.c
View File

@ -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

18
drivers/acpi/parser/psparse.c
View File

@ -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;
}
}

36
drivers/acpi/utilities/utdelete.c
View File

@ -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;

1
drivers/acpi/utilities/utglobal.c
View File

@ -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;

39
drivers/acpi/utilities/utmutex.c
View File

@ -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);
}

2
include/acpi/acconfig.h
View File

@ -63,7 +63,7 @@
/* Current ACPICA subsystem version in YYYYMMDD format */
#define ACPI_CA_VERSION 0x20060608
#define ACPI_CA_VERSION 0x20060623
/*
* OS name, used for the _OS object. The _OS object is essentially obsolete,

2
include/acpi/acdispat.h
View File

@ -201,7 +201,7 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
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);
struct acpi_walk_state *walk_state);
acpi_status
acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state);

26
include/acpi/acglobal.h
View File

@ -181,6 +181,12 @@ ACPI_EXTERN u8 acpi_gbl_integer_nybble_width;
extern struct acpi_table_list acpi_gbl_table_lists[ACPI_TABLE_ID_MAX + 1];
extern struct acpi_table_support acpi_gbl_table_data[ACPI_TABLE_ID_MAX + 1];
/*****************************************************************************
*
* Mutual exlusion within ACPICA subsystem
*
****************************************************************************/
/*
* Predefined mutex objects. This array contains the
* actual OS mutex handles, indexed by the local ACPI_MUTEX_HANDLEs.
@ -188,6 +194,20 @@ extern struct acpi_table_support acpi_gbl_table_data[ACPI_TABLE_ID_MAX + 1];
*/
ACPI_EXTERN struct acpi_mutex_info acpi_gbl_mutex_info[ACPI_NUM_MUTEX];
/*
* Global lock semaphore works in conjunction with the actual HW global lock
*/
ACPI_EXTERN acpi_semaphore acpi_gbl_global_lock_semaphore;
/*
* Spinlocks are used for interfaces that can be possibly called at
* interrupt level
*/
ACPI_EXTERN spinlock_t _acpi_gbl_gpe_lock; /* For GPE data structs and registers */
ACPI_EXTERN spinlock_t _acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */
#define acpi_gbl_gpe_lock &_acpi_gbl_gpe_lock
#define acpi_gbl_hardware_lock &_acpi_gbl_hardware_lock
/*****************************************************************************
*
* Miscellaneous globals
@ -217,7 +237,6 @@ ACPI_EXTERN struct acpi_object_notify_handler acpi_gbl_system_notify;
ACPI_EXTERN acpi_exception_handler acpi_gbl_exception_handler;
ACPI_EXTERN acpi_init_handler acpi_gbl_init_handler;
ACPI_EXTERN struct acpi_walk_state *acpi_gbl_breakpoint_walk;
ACPI_EXTERN acpi_handle acpi_gbl_global_lock_semaphore;
/* Misc */
@ -315,11 +334,6 @@ ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head;
ACPI_EXTERN struct acpi_gpe_block_info
*acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS];
/* Spinlocks */
ACPI_EXTERN acpi_handle acpi_gbl_gpe_lock;
ACPI_EXTERN acpi_handle acpi_gbl_hardware_lock;
/*****************************************************************************
*
* Debugger globals

5
include/acpi/acinterp.h
View File

@ -287,7 +287,10 @@ acpi_ex_system_wait_event(union acpi_operand_object *time,
acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc);
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 acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout);
/*
* exoparg1 - ACPI AML execution, 1 operand

34
include/acpi/aclocal.h
View File

@ -47,10 +47,11 @@
/* acpisrc:struct_defs -- for acpisrc conversion */
#define ACPI_WAIT_FOREVER 0xFFFF /* u16, as per ACPI spec */
#define ACPI_INFINITE_CONCURRENCY 0xFF
#define ACPI_DO_NOT_WAIT 0
#define ACPI_SERIALIZED 0xFF
typedef void *acpi_mutex;
typedef u32 acpi_mutex_handle;
#define ACPI_GLOBAL_LOCK (acpi_semaphore) (-1)
/* Total number of aml opcodes defined */
@ -79,16 +80,15 @@ union acpi_parse_object;
* table below also!
*/
#define ACPI_MTX_INTERPRETER 0 /* AML Interpreter, main lock */
#define ACPI_MTX_CONTROL_METHOD 1 /* Control method termination [TBD: may no longer be necessary] */
#define ACPI_MTX_TABLES 2 /* Data for ACPI tables */
#define ACPI_MTX_NAMESPACE 3 /* ACPI Namespace */
#define ACPI_MTX_EVENTS 4 /* Data for ACPI events */
#define ACPI_MTX_CACHES 5 /* Internal caches, general purposes */
#define ACPI_MTX_MEMORY 6 /* Debug memory tracking lists */
#define ACPI_MTX_DEBUG_CMD_COMPLETE 7 /* AML debugger */
#define ACPI_MTX_DEBUG_CMD_READY 8 /* AML debugger */
#define ACPI_MTX_TABLES 1 /* Data for ACPI tables */
#define ACPI_MTX_NAMESPACE 2 /* ACPI Namespace */
#define ACPI_MTX_EVENTS 3 /* Data for ACPI events */
#define ACPI_MTX_CACHES 4 /* Internal caches, general purposes */
#define ACPI_MTX_MEMORY 5 /* Debug memory tracking lists */
#define ACPI_MTX_DEBUG_CMD_COMPLETE 6 /* AML debugger */
#define ACPI_MTX_DEBUG_CMD_READY 7 /* AML debugger */
#define ACPI_MAX_MUTEX 8
#define ACPI_MAX_MUTEX 7
#define ACPI_NUM_MUTEX ACPI_MAX_MUTEX+1
#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
@ -98,14 +98,13 @@ union acpi_parse_object;
static char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = {
"ACPI_MTX_Interpreter",
"ACPI_MTX_Method",
"ACPI_MTX_Tables",
"ACPI_MTX_Namespace",
"ACPI_MTX_Events",
"ACPI_MTX_Caches",
"ACPI_MTX_Memory",
"ACPI_MTX_DebugCmdComplete",
"ACPI_MTX_DebugCmdReady"
"ACPI_MTX_CommandComplete",
"ACPI_MTX_CommandReady"
};
#endif
@ -704,6 +703,13 @@ struct acpi_bit_register_info {
u16 access_bit_mask;
};
/*
* Some ACPI registers have bits that must be ignored -- meaning that they
* must be preserved.
*/
#define ACPI_PM1_STATUS_PRESERVED_BITS 0x0800 /* Bit 11 */
#define ACPI_PM1_CONTROL_PRESERVED_BITS 0x0201 /* Bit 9, Bit 0 (SCI_EN) */
/*
* Register IDs
* These are the full ACPI registers

2
include/acpi/acmacros.h
View File

@ -394,6 +394,8 @@
#define ACPI_REGISTER_PREPARE_BITS(val, pos, mask) ((val << pos) & mask)
#define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val) reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask)
#define ACPI_INSERT_BITS(target, mask, source) target = ((target & (~(mask))) | (source & mask))
/* Generate a UUID */
#define ACPI_INIT_UUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \

8
include/acpi/acobject.h
View File

@ -140,14 +140,14 @@ struct acpi_object_package {
*****************************************************************************/
struct acpi_object_event {
ACPI_OBJECT_COMMON_HEADER void *semaphore;
ACPI_OBJECT_COMMON_HEADER acpi_semaphore os_semaphore; /* Actual OS synchronization object */
};
struct acpi_object_mutex {
ACPI_OBJECT_COMMON_HEADER u8 sync_level; /* 0-15, specified in Mutex() call */
u16 acquisition_depth; /* Allow multiple Acquires, same thread */
struct acpi_thread_state *owner_thread; /* Current owner of the mutex */
void *semaphore; /* Actual OS synchronization object */
acpi_mutex os_mutex; /* Actual OS synchronization object */
union acpi_operand_object *prev; /* Link for list of acquired mutexes */
union acpi_operand_object *next; /* Link for list of acquired mutexes */
struct acpi_namespace_node *node; /* Containing namespace node */
@ -166,8 +166,8 @@ struct acpi_object_region {
struct acpi_object_method {
ACPI_OBJECT_COMMON_HEADER u8 method_flags;
u8 param_count;
u8 concurrency;
void *semaphore;
u8 sync_level;
union acpi_operand_object *mutex;
u8 *aml_start;
ACPI_INTERNAL_METHOD implementation;
u32 aml_length;

40
include/acpi/acpiosxf.h
View File

@ -96,25 +96,47 @@ acpi_os_table_override(struct acpi_table_header *existing_table,
struct acpi_table_header **new_table);
/*
* Synchronization primitives
* Spinlock primitives
*/
acpi_status acpi_os_create_lock(acpi_spinlock * out_handle);
void acpi_os_delete_lock(acpi_spinlock handle);
acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock handle);
void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags);
/*
* Semaphore primitives
*/
acpi_status
acpi_os_create_semaphore(u32 max_units,
u32 initial_units, acpi_handle * out_handle);
u32 initial_units, acpi_semaphore * out_handle);
acpi_status acpi_os_delete_semaphore(acpi_handle handle);
acpi_status acpi_os_delete_semaphore(acpi_semaphore handle);
acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout);
acpi_status
acpi_os_wait_semaphore(acpi_semaphore handle, u32 units, u16 timeout);
acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units);
acpi_status acpi_os_signal_semaphore(acpi_semaphore handle, u32 units);
acpi_status acpi_os_create_lock(acpi_handle * out_handle);
/*
* Mutex primitives
*/
acpi_status acpi_os_create_mutex(acpi_mutex * out_handle);
void acpi_os_delete_lock(acpi_handle handle);
void acpi_os_delete_mutex(acpi_mutex handle);
acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle);
acpi_status acpi_os_acquire_mutex(acpi_mutex handle, u16 timeout);
void acpi_os_release_lock(acpi_handle handle, acpi_cpu_flags flags);
void acpi_os_release_mutex(acpi_mutex handle);
/* Temporary macros for Mutex* interfaces, map to existing semaphore xfaces */
#define acpi_os_create_mutex(out_handle) acpi_os_create_semaphore (1, 1, out_handle)
#define acpi_os_delete_mutex(handle) (void) acpi_os_delete_semaphore (handle)
#define acpi_os_acquire_mutex(handle,time) acpi_os_wait_semaphore (handle, 1, time)
#define acpi_os_release_mutex(handle) (void) acpi_os_signal_semaphore (handle, 1)
/*
* Memory allocation and mapping

49
include/acpi/actypes.h
View File

@ -241,7 +241,7 @@ typedef acpi_native_uint acpi_size;
/*******************************************************************************
*
* OS- or compiler-dependent types
* OS-dependent and compiler-dependent types
*
* If the defaults below are not appropriate for the host system, they can
* be defined in the compiler-specific or OS-specific header, and this will
@ -249,27 +249,34 @@ typedef acpi_native_uint acpi_size;
*
******************************************************************************/
/* Use C99 uintptr_t for pointer casting if available, "void *" otherwise */
/* Value returned by acpi_os_get_thread_id */
#ifndef acpi_uintptr_t
#define acpi_uintptr_t void *
#ifndef acpi_thread_id
#define acpi_thread_id acpi_native_uint
#endif
/*
* If acpi_cache_t was not defined in the OS-dependent header,
* define it now. This is typically the case where the local cache
* manager implementation is to be used (ACPI_USE_LOCAL_CACHE)
*/
/* Object returned from acpi_os_create_lock */
#ifndef acpi_spinlock
#define acpi_spinlock void *
#endif
/* Flags for acpi_os_acquire_lock/acpi_os_release_lock */
#ifndef acpi_cpu_flags
#define acpi_cpu_flags acpi_native_uint
#endif
/* Object returned from acpi_os_create_cache */
#ifndef acpi_cache_t
#define acpi_cache_t struct acpi_memory_list
#endif
/*
* Allow the CPU flags word to be defined per-OS to simplify the use of the
* lock and unlock OSL interfaces.
*/
#ifndef acpi_cpu_flags
#define acpi_cpu_flags acpi_native_uint
/* Use C99 uintptr_t for pointer casting if available, "void *" otherwise */
#ifndef acpi_uintptr_t
#define acpi_uintptr_t void *
#endif
/*
@ -298,13 +305,6 @@ typedef acpi_native_uint acpi_size;
#define ACPI_EXPORT_SYMBOL(symbol)
#endif
/*
* thread_id is returned by acpi_os_get_thread_id.
*/
#ifndef acpi_thread_id
#define acpi_thread_id acpi_native_uint
#endif
/*******************************************************************************
*
* Independent types
@ -380,6 +380,11 @@ struct uint32_struct {
u32 hi;
};
/* Synchronization objects */
#define acpi_mutex void *
#define acpi_semaphore void *
/*
* Acpi integer width. In ACPI version 1, integers are
* 32 bits. In ACPI version 2, integers are 64 bits.

2
include/acpi/platform/aclinux.h
View File

@ -58,11 +58,13 @@
#include <asm/div64.h>
#include <asm/acpi.h>
#include <linux/slab.h>
#include <linux/spinlock_types.h>
/* Host-dependent types and defines */
#define ACPI_MACHINE_WIDTH BITS_PER_LONG
#define acpi_cache_t kmem_cache_t
#define acpi_spinlock spinlock_t *
#define ACPI_EXPORT_SYMBOL(symbol) EXPORT_SYMBOL(symbol);
#define strtoul simple_strtoul