diff options
Diffstat (limited to 'drivers/acpi/namespace/nseval.c')
| -rw-r--r-- | drivers/acpi/namespace/nseval.c | 270 |
1 files changed, 122 insertions, 148 deletions
diff --git a/drivers/acpi/namespace/nseval.c b/drivers/acpi/namespace/nseval.c index 908cffd5e720..0191c7d92824 100644 --- a/drivers/acpi/namespace/nseval.c +++ b/drivers/acpi/namespace/nseval.c @@ -42,26 +42,19 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acparser.h> #include <acpi/acinterp.h> #include <acpi/acnamesp.h> - #define _COMPONENT ACPI_NAMESPACE - ACPI_MODULE_NAME ("nseval") +ACPI_MODULE_NAME("nseval") /* Local prototypes */ - static acpi_status -acpi_ns_execute_control_method ( - struct acpi_parameter_info *info); - -static acpi_status -acpi_ns_get_object_value ( - struct acpi_parameter_info *info); +acpi_ns_execute_control_method(struct acpi_parameter_info *info); +static acpi_status acpi_ns_get_object_value(struct acpi_parameter_info *info); /******************************************************************************* * @@ -85,48 +78,44 @@ acpi_ns_get_object_value ( ******************************************************************************/ acpi_status -acpi_ns_evaluate_relative ( - char *pathname, - struct acpi_parameter_info *info) +acpi_ns_evaluate_relative(char *pathname, struct acpi_parameter_info *info) { - acpi_status status; - struct acpi_namespace_node *node = NULL; - union acpi_generic_state *scope_info; - char *internal_path = NULL; - - - ACPI_FUNCTION_TRACE ("ns_evaluate_relative"); + acpi_status status; + struct acpi_namespace_node *node = NULL; + union acpi_generic_state *scope_info; + char *internal_path = NULL; + ACPI_FUNCTION_TRACE("ns_evaluate_relative"); /* * Must have a valid object handle */ if (!info || !info->node) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Build an internal name string for the method */ - status = acpi_ns_internalize_name (pathname, &internal_path); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ns_internalize_name(pathname, &internal_path); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - scope_info = acpi_ut_create_generic_state (); + scope_info = acpi_ut_create_generic_state(); if (!scope_info) { goto cleanup1; } /* Get the prefix handle and Node */ - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { goto cleanup; } - info->node = acpi_ns_map_handle_to_node (info->node); + info->node = acpi_ns_map_handle_to_node(info->node); if (!info->node) { - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); status = AE_BAD_PARAMETER; goto cleanup; } @@ -134,39 +123,38 @@ acpi_ns_evaluate_relative ( /* Lookup the name in the namespace */ scope_info->scope.node = info->node; - status = acpi_ns_lookup (scope_info, internal_path, ACPI_TYPE_ANY, - ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL, - &node); + status = acpi_ns_lookup(scope_info, internal_path, ACPI_TYPE_ANY, + ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL, + &node); - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "Object [%s] not found [%s]\n", - pathname, acpi_format_exception (status))); + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Object [%s] not found [%s]\n", + pathname, acpi_format_exception(status))); goto cleanup; } /* * Now that we have a handle to the object, we can attempt to evaluate it. */ - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "%s [%p] Value %p\n", - pathname, node, acpi_ns_get_attached_object (node))); + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", + pathname, node, acpi_ns_get_attached_object(node))); info->node = node; - status = acpi_ns_evaluate_by_handle (info); + status = acpi_ns_evaluate_by_handle(info); - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "*** Completed eval of object %s ***\n", - pathname)); + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, + "*** Completed eval of object %s ***\n", pathname)); -cleanup: - acpi_ut_delete_generic_state (scope_info); + cleanup: + acpi_ut_delete_generic_state(scope_info); -cleanup1: - ACPI_MEM_FREE (internal_path); - return_ACPI_STATUS (status); + cleanup1: + ACPI_MEM_FREE(internal_path); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ns_evaluate_by_name @@ -189,68 +177,63 @@ cleanup1: ******************************************************************************/ acpi_status -acpi_ns_evaluate_by_name ( - char *pathname, - struct acpi_parameter_info *info) +acpi_ns_evaluate_by_name(char *pathname, struct acpi_parameter_info *info) { - acpi_status status; - char *internal_path = NULL; - - - ACPI_FUNCTION_TRACE ("ns_evaluate_by_name"); + acpi_status status; + char *internal_path = NULL; + ACPI_FUNCTION_TRACE("ns_evaluate_by_name"); /* Build an internal name string for the method */ - status = acpi_ns_internalize_name (pathname, &internal_path); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ns_internalize_name(pathname, &internal_path); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { goto cleanup; } /* Lookup the name in the namespace */ - status = acpi_ns_lookup (NULL, internal_path, ACPI_TYPE_ANY, - ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL, - &info->node); + status = acpi_ns_lookup(NULL, internal_path, ACPI_TYPE_ANY, + ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL, + &info->node); - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, - "Object at [%s] was not found, status=%.4X\n", - pathname, status)); + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, + "Object at [%s] was not found, status=%.4X\n", + pathname, status)); goto cleanup; } /* * Now that we have a handle to the object, we can attempt to evaluate it. */ - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "%s [%p] Value %p\n", - pathname, info->node, acpi_ns_get_attached_object (info->node))); - - status = acpi_ns_evaluate_by_handle (info); + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", + pathname, info->node, + acpi_ns_get_attached_object(info->node))); - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "*** Completed eval of object %s ***\n", - pathname)); + status = acpi_ns_evaluate_by_handle(info); + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, + "*** Completed eval of object %s ***\n", pathname)); -cleanup: + cleanup: /* Cleanup */ if (internal_path) { - ACPI_MEM_FREE (internal_path); + ACPI_MEM_FREE(internal_path); } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ns_evaluate_by_handle @@ -275,26 +258,22 @@ cleanup: * ******************************************************************************/ -acpi_status -acpi_ns_evaluate_by_handle ( - struct acpi_parameter_info *info) +acpi_status acpi_ns_evaluate_by_handle(struct acpi_parameter_info *info) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("ns_evaluate_by_handle"); + acpi_status status; + ACPI_FUNCTION_TRACE("ns_evaluate_by_handle"); /* Check if namespace has been initialized */ if (!acpi_gbl_root_node) { - return_ACPI_STATUS (AE_NO_NAMESPACE); + return_ACPI_STATUS(AE_NO_NAMESPACE); } /* Parameter Validation */ if (!info) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Initialize the return value to an invalid object */ @@ -303,23 +282,25 @@ acpi_ns_evaluate_by_handle ( /* Get the prefix handle and Node */ - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - info->node = acpi_ns_map_handle_to_node (info->node); + info->node = acpi_ns_map_handle_to_node(info->node); if (!info->node) { - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (AE_BAD_PARAMETER); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* * For a method alias, we must grab the actual method node so that proper * scoping context will be established before execution. */ - if (acpi_ns_get_type (info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) { - info->node = ACPI_CAST_PTR (struct acpi_namespace_node, info->node->object); + if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) { + info->node = + ACPI_CAST_PTR(struct acpi_namespace_node, + info->node->object); } /* @@ -329,17 +310,16 @@ acpi_ns_evaluate_by_handle ( * * In both cases, the namespace is unlocked by the acpi_ns* procedure */ - if (acpi_ns_get_type (info->node) == ACPI_TYPE_METHOD) { + if (acpi_ns_get_type(info->node) == ACPI_TYPE_METHOD) { /* * Case 1) We have an actual control method to execute */ - status = acpi_ns_execute_control_method (info); - } - else { + status = acpi_ns_execute_control_method(info); + } else { /* * Case 2) Object is NOT a method, just return its current value */ - status = acpi_ns_get_object_value (info); + status = acpi_ns_get_object_value(info); } /* @@ -355,10 +335,9 @@ acpi_ns_evaluate_by_handle ( * Namespace was unlocked by the handling acpi_ns* function, so we * just return */ - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ns_execute_control_method @@ -384,30 +363,29 @@ acpi_ns_evaluate_by_handle ( ******************************************************************************/ static acpi_status -acpi_ns_execute_control_method ( - struct acpi_parameter_info *info) +acpi_ns_execute_control_method(struct acpi_parameter_info *info) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("ns_execute_control_method"); + acpi_status status; + ACPI_FUNCTION_TRACE("ns_execute_control_method"); /* Verify that there is a method associated with this object */ - info->obj_desc = acpi_ns_get_attached_object (info->node); + info->obj_desc = acpi_ns_get_attached_object(info->node); if (!info->obj_desc) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No attached method object\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "No attached method object\n")); - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (AE_NULL_OBJECT); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(AE_NULL_OBJECT); } - ACPI_DUMP_PATHNAME (info->node, "Execute Method:", - ACPI_LV_INFO, _COMPONENT); + ACPI_DUMP_PATHNAME(info->node, "Execute Method:", + ACPI_LV_INFO, _COMPONENT); - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Method at AML address %p Length %X\n", - info->obj_desc->method.aml_start + 1, info->obj_desc->method.aml_length - 1)); + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Method at AML address %p Length %X\n", + info->obj_desc->method.aml_start + 1, + info->obj_desc->method.aml_length - 1)); /* * Unlock the namespace before execution. This allows namespace access @@ -416,27 +394,26 @@ acpi_ns_execute_control_method ( * interpreter locks to ensure that no thread is using the portion of the * namespace that is being deleted. */ - status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* * Execute the method via the interpreter. The interpreter is locked * here before calling into the AML parser */ - status = acpi_ex_enter_interpreter (); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ex_enter_interpreter(); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_ps_execute_method (info); - acpi_ex_exit_interpreter (); + status = acpi_ps_execute_method(info); + acpi_ex_exit_interpreter(); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ns_get_object_value @@ -454,16 +431,12 @@ acpi_ns_execute_control_method ( * ******************************************************************************/ -static acpi_status -acpi_ns_get_object_value ( - struct acpi_parameter_info *info) +static acpi_status acpi_ns_get_object_value(struct acpi_parameter_info *info) { - acpi_status status = AE_OK; - struct acpi_namespace_node *resolved_node = info->node; - - - ACPI_FUNCTION_TRACE ("ns_get_object_value"); + acpi_status status = AE_OK; + struct acpi_namespace_node *resolved_node = info->node; + ACPI_FUNCTION_TRACE("ns_get_object_value"); /* * Objects require additional resolution steps (e.g., the Node may be a @@ -486,32 +459,33 @@ acpi_ns_get_object_value ( * * We must release the namespace lock before entering the intepreter. */ - status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_ex_enter_interpreter (); - if (ACPI_SUCCESS (status)) { - status = acpi_ex_resolve_node_to_value (&resolved_node, NULL); + status = acpi_ex_enter_interpreter(); + if (ACPI_SUCCESS(status)) { + status = acpi_ex_resolve_node_to_value(&resolved_node, NULL); /* * If acpi_ex_resolve_node_to_value() succeeded, the return value was placed * in resolved_node. */ - acpi_ex_exit_interpreter (); + acpi_ex_exit_interpreter(); - if (ACPI_SUCCESS (status)) { + if (ACPI_SUCCESS(status)) { status = AE_CTRL_RETURN_VALUE; info->return_object = ACPI_CAST_PTR - (union acpi_operand_object, resolved_node); - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "Returning object %p [%s]\n", - info->return_object, - acpi_ut_get_object_type_name (info->return_object))); + (union acpi_operand_object, resolved_node); + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, + "Returning object %p [%s]\n", + info->return_object, + acpi_ut_get_object_type_name(info-> + return_object))); } } /* Namespace is unlocked */ - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - |