diff options
Diffstat (limited to 'drivers/acpi/parser/psxface.c')
-rw-r--r-- | drivers/acpi/parser/psxface.c | 251 |
1 files changed, 126 insertions, 125 deletions
diff --git a/drivers/acpi/parser/psxface.c b/drivers/acpi/parser/psxface.c index dba893648e8..4dcbd443160 100644 --- a/drivers/acpi/parser/psxface.c +++ b/drivers/acpi/parser/psxface.c @@ -41,24 +41,27 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acparser.h> #include <acpi/acdispat.h> #include <acpi/acinterp.h> -#include <acpi/acnamesp.h> - #define _COMPONENT ACPI_PARSER - ACPI_MODULE_NAME ("psxface") +ACPI_MODULE_NAME("psxface") + +/* Local Prototypes */ +static acpi_status acpi_ps_execute_pass(struct acpi_parameter_info *info); +static void +acpi_ps_update_parameter_list(struct acpi_parameter_info *info, u16 action); /******************************************************************************* * - * FUNCTION: acpi_psx_execute + * FUNCTION: acpi_ps_execute_method * * PARAMETERS: Info - Method info block, contains: * Node - Method Node to execute + * obj_desc - Method object * Parameters - List of parameters to pass to the method, * terminated by NULL. Params itself may be * NULL if no parameters are being passed. @@ -67,6 +70,7 @@ * parameter_type - Type of Parameter list * return_object - Where to put method's return value (if * any). If NULL, no value is returned. + * pass_number - Parse or execute pass * * RETURN: Status * @@ -74,173 +78,170 @@ * ******************************************************************************/ -acpi_status -acpi_psx_execute ( - struct acpi_parameter_info *info) +acpi_status acpi_ps_execute_method(struct acpi_parameter_info *info) { - acpi_status status; - union acpi_operand_object *obj_desc; - u32 i; - union acpi_parse_object *op; - struct acpi_walk_state *walk_state; - - - ACPI_FUNCTION_TRACE ("psx_execute"); + acpi_status status; + ACPI_FUNCTION_TRACE("ps_execute_method"); - /* Validate the Node and get the attached object */ + /* Validate the Info and method Node */ if (!info || !info->node) { - return_ACPI_STATUS (AE_NULL_ENTRY); - } - - obj_desc = acpi_ns_get_attached_object (info->node); - if (!obj_desc) { - return_ACPI_STATUS (AE_NULL_OBJECT); + return_ACPI_STATUS(AE_NULL_ENTRY); } /* Init for new method, wait on concurrency semaphore */ - status = acpi_ds_begin_method_execution (info->node, obj_desc, NULL); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = + acpi_ds_begin_method_execution(info->node, info->obj_desc, NULL); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - if ((info->parameter_type == ACPI_PARAM_ARGS) && - (info->parameters)) { - /* - * The caller "owns" the parameters, so give each one an extra - * reference - */ - for (i = 0; info->parameters[i]; i++) { - acpi_ut_add_reference (info->parameters[i]); - } - } + /* + * The caller "owns" the parameters, so give each one an extra + * reference + */ + acpi_ps_update_parameter_list(info, REF_INCREMENT); /* * 1) Perform the first pass parse of the method to enter any - * named objects that it creates into the namespace + * named objects that it creates into the namespace */ - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "**** Begin Method Parse **** Entry=%p obj=%p\n", - info->node, obj_desc)); - - /* Create and init a Root Node */ - - op = acpi_ps_create_scope_op (); - if (!op) { - status = AE_NO_MEMORY; - goto cleanup1; + ACPI_DEBUG_PRINT((ACPI_DB_PARSE, + "**** Begin Method Parse **** Entry=%p obj=%p\n", + info->node, info->obj_desc)); + + info->pass_number = 1; + status = acpi_ps_execute_pass(info); + if (ACPI_FAILURE(status)) { + goto cleanup; } /* - * 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. + * 2) Execute the method. Performs second pass parse simultaneously */ - obj_desc->method.owning_id = acpi_ut_allocate_owner_id (ACPI_OWNER_TYPE_METHOD); + ACPI_DEBUG_PRINT((ACPI_DB_PARSE, + "**** Begin Method Execution **** Entry=%p obj=%p\n", + info->node, info->obj_desc)); - /* Create and initialize a new walk state */ + info->pass_number = 3; + status = acpi_ps_execute_pass(info); - walk_state = acpi_ds_create_walk_state (obj_desc->method.owning_id, - NULL, NULL, NULL); - if (!walk_state) { - status = AE_NO_MEMORY; - goto cleanup2; - } + cleanup: + /* Take away the extra reference that we gave the parameters above */ - status = acpi_ds_init_aml_walk (walk_state, op, info->node, - obj_desc->method.aml_start, - obj_desc->method.aml_length, NULL, 1); - if (ACPI_FAILURE (status)) { - goto cleanup3; - } + acpi_ps_update_parameter_list(info, REF_DECREMENT); - /* Parse the AML */ + /* Exit now if error above */ - status = acpi_ps_parse_aml (walk_state); - acpi_ps_delete_parse_tree (op); - if (ACPI_FAILURE (status)) { - goto cleanup1; /* Walk state is already deleted */ + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* - * 2) Execute the method. Performs second pass parse simultaneously + * If the method has returned an object, signal this to the caller with + * a control exception code */ - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "**** Begin Method Execution **** Entry=%p obj=%p\n", - info->node, obj_desc)); - - /* Create and init a Root Node */ + if (info->return_object) { + ACPI_DEBUG_PRINT((ACPI_DB_PARSE, + "Method returned obj_desc=%p\n", + info->return_object)); + ACPI_DUMP_STACK_ENTRY(info->return_object); - op = acpi_ps_create_scope_op (); - if (!op) { - status = AE_NO_MEMORY; - goto cleanup1; + status = AE_CTRL_RETURN_VALUE; } - /* Init new op with the method name and pointer back to the NS node */ + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ps_update_parameter_list + * + * PARAMETERS: Info - See struct acpi_parameter_info + * (Used: parameter_type and Parameters) + * Action - Add or Remove reference + * + * RETURN: Status + * + * DESCRIPTION: Update reference count on all method parameter objects + * + ******************************************************************************/ - acpi_ps_set_name (op, info->node->name.integer); - op->common.node = info->node; +static void +acpi_ps_update_parameter_list(struct acpi_parameter_info *info, u16 action) +{ + acpi_native_uint i; - /* Create and initialize a new walk state */ + if ((info->parameter_type == ACPI_PARAM_ARGS) && (info->parameters)) { + /* Update reference count for each parameter */ - walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL); - if (!walk_state) { - status = AE_NO_MEMORY; - goto cleanup2; - } + for (i = 0; info->parameters[i]; i++) { + /* Ignore errors, just do them all */ - status = acpi_ds_init_aml_walk (walk_state, op, info->node, - obj_desc->method.aml_start, - obj_desc->method.aml_length, info, 3); - if (ACPI_FAILURE (status)) { - goto cleanup3; + (void)acpi_ut_update_object_reference(info-> + parameters[i], + action); + } } +} - /* The walk of the parse tree is where we actually execute the method */ - - status = acpi_ps_parse_aml (walk_state); - goto cleanup2; /* Walk state already deleted */ +/******************************************************************************* + * + * FUNCTION: acpi_ps_execute_pass + * + * PARAMETERS: Info - See struct acpi_parameter_info + * (Used: pass_number, Node, and obj_desc) + * + * RETURN: Status + * + * DESCRIPTION: Single AML pass: Parse or Execute a control method + * + ******************************************************************************/ +static acpi_status acpi_ps_execute_pass(struct acpi_parameter_info *info) +{ + acpi_status status; + union acpi_parse_object *op; + struct acpi_walk_state *walk_state; -cleanup3: - acpi_ds_delete_walk_state (walk_state); + ACPI_FUNCTION_TRACE("ps_execute_pass"); -cleanup2: - acpi_ps_delete_parse_tree (op); + /* Create and init a Root Node */ -cleanup1: - if ((info->parameter_type == ACPI_PARAM_ARGS) && - (info->parameters)) { - /* Take away the extra reference that we gave the parameters above */ + op = acpi_ps_create_scope_op(); + if (!op) { + return_ACPI_STATUS(AE_NO_MEMORY); + } - for (i = 0; info->parameters[i]; i++) { - /* Ignore errors, just do them all */ + /* Create and initialize a new walk state */ - (void) acpi_ut_update_object_reference ( - info->parameters[i], REF_DECREMENT); - } + walk_state = + acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL, + NULL, NULL); + if (!walk_state) { + status = AE_NO_MEMORY; + goto cleanup; } - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ds_init_aml_walk(walk_state, op, info->node, + info->obj_desc->method.aml_start, + info->obj_desc->method.aml_length, + info->pass_number == 1 ? NULL : info, + info->pass_number); + if (ACPI_FAILURE(status)) { + acpi_ds_delete_walk_state(walk_state); + goto cleanup; } - /* - * If the method has returned an object, signal this to the caller with - * a control exception code - */ - if (info->return_object) { - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned obj_desc=%p\n", - info->return_object)); - ACPI_DUMP_STACK_ENTRY (info->return_object); - - status = AE_CTRL_RETURN_VALUE; - } + /* Parse the AML */ - return_ACPI_STATUS (status); -} + status = acpi_ps_parse_aml(walk_state); + /* Walk state was deleted by parse_aml */ + cleanup: + acpi_ps_delete_parse_tree(op); + return_ACPI_STATUS(status); +} |