#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME ("dsopcode")
+/* Local prototypes */
-/*****************************************************************************
+static acpi_status
+acpi_ds_execute_arguments (
+ struct acpi_namespace_node *node,
+ struct acpi_namespace_node *scope_node,
+ u32 aml_length,
+ u8 *aml_start);
+
+static acpi_status
+acpi_ds_init_buffer_field (
+ u16 aml_opcode,
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object *buffer_desc,
+ union acpi_operand_object *offset_desc,
+ union acpi_operand_object *length_desc,
+ union acpi_operand_object *result_desc);
+
+
+/*******************************************************************************
*
* FUNCTION: acpi_ds_execute_arguments
*
- * PARAMETERS: Node - Parent NS node
+ * PARAMETERS: Node - Object NS node
+ * scope_node - Parent NS node
* aml_length - Length of executable AML
* aml_start - Pointer to the AML
*
*
* DESCRIPTION: Late (deferred) execution of region or field arguments
*
- ****************************************************************************/
+ ******************************************************************************/
-acpi_status
+static acpi_status
acpi_ds_execute_arguments (
struct acpi_namespace_node *node,
struct acpi_namespace_node *scope_node,
walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL);
if (!walk_state) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ status = AE_NO_MEMORY;
+ goto cleanup;
}
status = acpi_ds_init_aml_walk (walk_state, op, NULL, aml_start,
aml_length, NULL, 1);
if (ACPI_FAILURE (status)) {
acpi_ds_delete_walk_state (walk_state);
- return_ACPI_STATUS (status);
+ goto cleanup;
}
/* Mark this parse as a deferred opcode */
status = acpi_ps_parse_aml (walk_state);
if (ACPI_FAILURE (status)) {
- acpi_ps_delete_parse_tree (op);
- return_ACPI_STATUS (status);
+ goto cleanup;
}
/* Get and init the Op created above */
walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL);
if (!walk_state) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ status = AE_NO_MEMORY;
+ goto cleanup;
}
/* Execute the opcode and arguments */
aml_length, NULL, 3);
if (ACPI_FAILURE (status)) {
acpi_ds_delete_walk_state (walk_state);
- return_ACPI_STATUS (status);
+ goto cleanup;
}
/* Mark this execution as a deferred opcode */
walk_state->deferred_node = node;
status = acpi_ps_parse_aml (walk_state);
+
+cleanup:
acpi_ps_delete_parse_tree (op);
return_ACPI_STATUS (status);
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ds_get_buffer_field_arguments
*
* DESCRIPTION: Get buffer_field Buffer and Index. This implements the late
* evaluation of these field attributes.
*
- ****************************************************************************/
+ ******************************************************************************/
acpi_status
acpi_ds_get_buffer_field_arguments (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ds_get_buffer_arguments
*
* DESCRIPTION: Get Buffer length and initializer byte list. This implements
* the late evaluation of these attributes.
*
- ****************************************************************************/
+ ******************************************************************************/
acpi_status
acpi_ds_get_buffer_arguments (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ds_get_package_arguments
*
* DESCRIPTION: Get Package length and initializer byte list. This implements
* the late evaluation of these attributes.
*
- ****************************************************************************/
+ ******************************************************************************/
acpi_status
acpi_ds_get_package_arguments (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ds_initialize_region
*
- * PARAMETERS: Op - A valid region Op object
+ * PARAMETERS: obj_handle - Region namespace node
*
* RETURN: Status
*
* DESCRIPTION: Front end to ev_initialize_region
*
- ****************************************************************************/
+ ******************************************************************************/
acpi_status
acpi_ds_initialize_region (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ds_init_buffer_field
*
* obj_desc - buffer_field object
* buffer_desc - Host Buffer
* offset_desc - Offset into buffer
- * Length - Length of field (CREATE_FIELD_OP only)
- * Result - Where to store the result
+ * length_desc - Length of field (CREATE_FIELD_OP only)
+ * result_desc - Where to store the result
*
* RETURN: Status
*
* DESCRIPTION: Perform actual initialization of a buffer field
*
- ****************************************************************************/
+ ******************************************************************************/
-acpi_status
+static acpi_status
acpi_ds_init_buffer_field (
u16 aml_opcode,
union acpi_operand_object *obj_desc,
* after resolution in acpi_ex_resolve_operands().
*/
if (ACPI_GET_DESCRIPTOR_TYPE (result_desc) != ACPI_DESC_TYPE_NAMED) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(%s) destination not a NS Node [%s]\n",
- acpi_ps_get_opcode_name (aml_opcode), acpi_ut_get_descriptor_name (result_desc)));
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "(%s) destination not a NS Node [%s]\n",
+ acpi_ps_get_opcode_name (aml_opcode),
+ acpi_ut_get_descriptor_name (result_desc)));
status = AE_AML_OPERAND_TYPE;
goto cleanup;
/* Offset is in bits, count is in bits */
+ field_flags = AML_FIELD_ACCESS_BYTE;
bit_offset = offset;
bit_count = (u32) length_desc->integer.value;
- field_flags = AML_FIELD_ACCESS_BYTE;
+
+ /* Must have a valid (>0) bit count */
+
+ if (bit_count == 0) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Attempt to create_field of length 0\n"));
+ status = AE_AML_OPERAND_VALUE;
+ goto cleanup;
+ }
break;
case AML_CREATE_BIT_FIELD_OP:
/*
* Initialize areas of the field object that are common to all fields
- * For field_flags, use LOCK_RULE = 0 (NO_LOCK), UPDATE_RULE = 0 (UPDATE_PRESERVE)
+ * For field_flags, use LOCK_RULE = 0 (NO_LOCK),
+ * UPDATE_RULE = 0 (UPDATE_PRESERVE)
*/
status = acpi_ex_prep_common_field_object (obj_desc, field_flags, 0,
bit_offset, bit_count);
/* Reference count for buffer_desc inherits obj_desc count */
- buffer_desc->common.reference_count = (u16) (buffer_desc->common.reference_count +
- obj_desc->common.reference_count);
+ buffer_desc->common.reference_count = (u16)
+ (buffer_desc->common.reference_count + obj_desc->common.reference_count);
cleanup:
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ds_eval_buffer_field_operands
*
* DESCRIPTION: Get buffer_field Buffer and Index
* Called from acpi_ds_exec_end_op during buffer_field parse tree walk
*
- ****************************************************************************/
+ ******************************************************************************/
acpi_status
acpi_ds_eval_buffer_field_operands (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ds_eval_region_operands
*
* DESCRIPTION: Get region address and length
* Called from acpi_ds_exec_end_op during op_region parse tree walk
*
- ****************************************************************************/
+ ******************************************************************************/
acpi_status
acpi_ds_eval_region_operands (
/*
- * This is where we evaluate the address and length fields of the op_region declaration
+ * This is where we evaluate the address and length fields of the
+ * op_region declaration
*/
node = op->common.node;
/* Resolve the length and address operands to numbers */
- status = acpi_ex_resolve_operands (op->common.aml_opcode, ACPI_WALK_OPERANDS, walk_state);
+ status = acpi_ex_resolve_operands (op->common.aml_opcode,
+ ACPI_WALK_OPERANDS, walk_state);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
*/
operand_desc = walk_state->operands[walk_state->num_operands - 2];
- obj_desc->region.address = (acpi_physical_address) operand_desc->integer.value;
+ obj_desc->region.address = (acpi_physical_address)
+ operand_desc->integer.value;
acpi_ut_remove_reference (operand_desc);
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "rgn_obj %p Addr %8.8X%8.8X Len %X\n",
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ds_eval_data_object_operands
*
* DESCRIPTION: Get the operands and complete the following data object types:
* Buffer, Package.
*
- ****************************************************************************/
+ ******************************************************************************/
acpi_status
acpi_ds_eval_data_object_operands (
if (ACPI_SUCCESS (status)) {
/*
- * Return the object in the walk_state, unless the parent is a package --
+ * Return the object in the walk_state, unless the parent is a package -
* in this case, the return object will be stored in the parse tree
* for the package.
*/
status = AE_CTRL_PENDING;
}
- ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] termination! Op=%p\n", op));
+ ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+ "[WHILE_OP] termination! Op=%p\n",op));
/* Pop this control state and free it */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff