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path: root/drivers/acpi/parser/psxface.c
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Diffstat (limited to 'drivers/acpi/parser/psxface.c')
-rw-r--r--drivers/acpi/parser/psxface.c242
1 files changed, 137 insertions, 105 deletions
diff --git a/drivers/acpi/parser/psxface.c b/drivers/acpi/parser/psxface.c
index 5279b51e778..d1541fabaf0 100644
--- a/drivers/acpi/parser/psxface.c
+++ b/drivers/acpi/parser/psxface.c
@@ -46,19 +46,30 @@
#include <acpi/acparser.h>
#include <acpi/acdispat.h>
#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
#define _COMPONENT ACPI_PARSER
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 +78,7 @@
* 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
*
@@ -75,174 +87,194 @@
******************************************************************************/
acpi_status
-acpi_psx_execute (
+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_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);
- }
-
/* Init for new method, wait on concurrency semaphore */
- status = acpi_ds_begin_method_execution (info->node, obj_desc, NULL);
+ 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]);
- }
- }
-
- /*
- * 1) Perform the first pass parse of the method to enter any
- * 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;
- }
-
/*
* 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);
+ status = acpi_ut_allocate_owner_id (&info->obj_desc->method.owner_id);
if (ACPI_FAILURE (status)) {
- goto cleanup2;
- }
-
- /* 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;
+ return_ACPI_STATUS (status);
}
- 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;
- }
+ /*
+ * The caller "owns" the parameters, so give each one an extra
+ * reference
+ */
+ acpi_ps_update_parameter_list (info, REF_INCREMENT);
- /* Parse the AML */
+ /*
+ * 1) Perform the first pass parse of the method to enter any
+ * named objects that it creates into the namespace
+ */
+ ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
+ "**** Begin Method Parse **** Entry=%p obj=%p\n",
+ info->node, info->obj_desc));
- status = acpi_ps_parse_aml (walk_state);
- acpi_ps_delete_parse_tree (op);
+ info->pass_number = 1;
+ status = acpi_ps_execute_pass (info);
if (ACPI_FAILURE (status)) {
- goto cleanup1; /* Walk state is already deleted */
+ goto cleanup;
}
/*
- * 2) Execute the method. Performs second pass parse simultaneously
+ * 2) Execute the method. Performs second pass parse simultaneously
*/
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
"**** Begin Method Execution **** Entry=%p obj=%p\n",
- info->node, obj_desc));
+ info->node, info->obj_desc));
- /* Create and init a Root Node */
+ info->pass_number = 3;
+ status = acpi_ps_execute_pass (info);
- op = acpi_ps_create_scope_op ();
- if (!op) {
- status = AE_NO_MEMORY;
- goto cleanup1;
+
+cleanup:
+ if (info->obj_desc->method.owner_id) {
+ acpi_ut_release_owner_id (&info->obj_desc->method.owner_id);
}
- /* Init new op with the method name and pointer back to the NS node */
+ /* Take away the extra reference that we gave the parameters above */
- acpi_ps_set_name (op, info->node->name.integer);
- op->common.node = info->node;
+ acpi_ps_update_parameter_list (info, REF_DECREMENT);
- /* Create and initialize a new walk state */
+ /* Exit now if error above */
- walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL);
- if (!walk_state) {
- status = AE_NO_MEMORY;
- goto cleanup2;
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
}
- 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;
+ /*
+ * 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;
}
- /* The walk of the parse tree is where we actually execute the method */
+ return_ACPI_STATUS (status);
+}
- status = acpi_ps_parse_aml (walk_state);
- goto cleanup2; /* Walk state already deleted */
+/*******************************************************************************
+ *
+ * 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
+ *
+ ******************************************************************************/
-cleanup3:
- acpi_ds_delete_walk_state (walk_state);
+static void
+acpi_ps_update_parameter_list (
+ struct acpi_parameter_info *info,
+ u16 action)
+{
+ acpi_native_uint i;
-cleanup2:
- acpi_ps_delete_parse_tree (op);
-cleanup1:
if ((info->parameter_type == ACPI_PARAM_ARGS) &&
(info->parameters)) {
- /* Take away the extra reference that we gave the parameters above */
+ /* Update reference count for each parameter */
for (i = 0; info->parameters[i]; i++) {
/* Ignore errors, just do them all */
- (void) acpi_ut_update_object_reference (
- info->parameters[i], REF_DECREMENT);
+ (void) acpi_ut_update_object_reference (info->parameters[i], action);
}
}
+}
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+
+/*******************************************************************************
+ *
+ * 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;
+
+
+ ACPI_FUNCTION_TRACE ("ps_execute_pass");
+
+
+ /* Create and init a Root Node */
+
+ op = acpi_ps_create_scope_op ();
+ if (!op) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
}
- /*
- * 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);
+ /* Create and initialize a new walk state */
- status = AE_CTRL_RETURN_VALUE;
+ 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;
+ }
+
+ 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;
}
+ /* Parse the AML */
+
+ 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);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-16 05:25:08 +0000