arg->common.node = info->field_node;
info->field_bit_length = arg->common.value.size;
- /* Create and initialize an object for the new Field Node */
-
- status = acpi_ex_prep_field_value(info);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ /*
+ * If there is no object attached to the node, this node was just created
+ * and we need to create the field object. Otherwise, this was a lookup
+ * of an existing node and we don't want to create the field object again.
+ */
+ if (!acpi_ns_get_attached_object
+ (info->field_node)) {
+ status = acpi_ex_prep_field_value(info);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
}
}
union acpi_parse_object *arg = NULL;
struct acpi_namespace_node *node;
u8 type = 0;
+ u32 flags;
ACPI_FUNCTION_TRACE_PTR(ds_init_field_objects, op);
+ /*
+ * During the load phase, we want to enter the name of the field into
+ * the namespace. During the execute phase (when we evaluate the bank_value
+ * operand), we want to lookup the name.
+ */
+ if (walk_state->deferred_node) {
+ flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE;
+ } else {
+ flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
+ ACPI_NS_ERROR_IF_FOUND;
+ }
+
switch (walk_state->opcode) {
case AML_FIELD_OP:
arg = acpi_ps_get_arg(op, 2);
status = acpi_ns_lookup(walk_state->scope_info,
(char *)&arg->named.name,
type, ACPI_IMODE_LOAD_PASS1,
- ACPI_NS_NO_UPSEARCH |
- ACPI_NS_DONT_OPEN_SCOPE |
- ACPI_NS_ERROR_IF_FOUND,
- walk_state, &node);
+ flags, walk_state, &node);
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE((char *)&arg->named.name,
status);
*
* PARAMETERS: Op - Op containing the Field definition and args
* region_node - Object for the containing Operation Region
- * ` walk_state - Current method state
+ * walk_state - Current method state
*
* RETURN: Status
*
return_ACPI_STATUS(status);
}
- /* Third arg is the bank_value */
-
- /* TBD: This arg is a term_arg, not a constant, and must be evaluated */
-
+ /*
+ * Third arg is the bank_value
+ * This arg is a term_arg, not a constant
+ * It will be evaluated later, by acpi_ds_eval_bank_field_operands
+ */
arg = arg->common.next;
- /* Currently, only the following constants are supported */
-
- switch (arg->common.aml_opcode) {
- case AML_ZERO_OP:
- info.bank_value = 0;
- break;
-
- case AML_ONE_OP:
- info.bank_value = 1;
- break;
-
- case AML_BYTE_OP:
- case AML_WORD_OP:
- case AML_DWORD_OP:
- case AML_QWORD_OP:
- info.bank_value = (u32) arg->common.value.integer;
- break;
-
- default:
- info.bank_value = 0;
- ACPI_ERROR((AE_INFO,
- "Non-constant BankValue for BankField is not implemented"));
- }
-
/* Fourth arg is the field flags */
arg = arg->common.next;
info.field_type = ACPI_TYPE_LOCAL_BANK_FIELD;
info.region_node = region_node;
- status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
+ /*
+ * Use Info.data_register_node to store bank_field Op
+ * It's safe because data_register_node will never be used when create bank field
+ * We store aml_start and aml_length in the bank_field Op for late evaluation
+ * Used in acpi_ex_prep_field_value(Info)
+ *
+ * TBD: Or, should we add a field in struct acpi_create_field_info, like "void *ParentOp"?
+ */
+ info.data_register_node = (struct acpi_namespace_node *)op;
+ status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
return_ACPI_STATUS(status);
}
return_ACPI_STATUS(status);
}
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_get_bank_field_arguments
+ *
+ * PARAMETERS: obj_desc - A valid bank_field object
+ *
+ * RETURN: Status.
+ *
+ * DESCRIPTION: Get bank_field bank_value. This implements the late
+ * evaluation of these field attributes.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc)
+{
+ union acpi_operand_object *extra_desc;
+ struct acpi_namespace_node *node;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc);
+
+ if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Get the AML pointer (method object) and bank_field node */
+
+ extra_desc = acpi_ns_get_secondary_object(obj_desc);
+ node = obj_desc->bank_field.node;
+
+ ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
+ (ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL));
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
+ acpi_ut_get_node_name(node)));
+
+ /* Execute the AML code for the term_arg arguments */
+
+ status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node),
+ extra_desc->extra.aml_length,
+ extra_desc->extra.aml_start);
+ return_ACPI_STATUS(status);
+}
+
/*******************************************************************************
*
* FUNCTION: acpi_ds_get_buffer_arguments
return_ACPI_STATUS(status);
}
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_bank_field_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * Op - A valid bank_field Op object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get bank_field bank_value
+ * Called from acpi_ds_exec_end_op during bank_field parse tree walk
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object *operand_desc;
+ struct acpi_namespace_node *node;
+ union acpi_parse_object *next_op;
+ union acpi_parse_object *arg;
+
+ ACPI_FUNCTION_TRACE_PTR(ds_eval_bank_field_operands, op);
+
+ /*
+ * This is where we evaluate the bank_value field of the
+ * bank_field declaration
+ */
+
+ /* next_op points to the op that holds the Region */
+
+ next_op = op->common.value.arg;
+
+ /* next_op points to the op that holds the Bank Register */
+
+ next_op = next_op->common.next;
+
+ /* next_op points to the op that holds the Bank Value */
+
+ next_op = next_op->common.next;
+
+ /*
+ * Set proper index into operand stack for acpi_ds_obj_stack_push
+ * invoked inside acpi_ds_create_operand.
+ *
+ * We use walk_state->Operands[0] to store the evaluated bank_value
+ */
+ walk_state->operand_index = 0;
+
+ status = acpi_ds_create_operand(walk_state, next_op, 0);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ status = acpi_ex_resolve_to_value(&walk_state->operands[0], walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
+ acpi_ps_get_opcode_name(op->common.aml_opcode),
+ 1, "after AcpiExResolveOperands");
+
+ /*
+ * Get the bank_value operand and save it
+ * (at Top of stack)
+ */
+ operand_desc = walk_state->operands[0];
+
+ /* Arg points to the start Bank Field */
+
+ arg = acpi_ps_get_arg(op, 4);
+ while (arg) {
+
+ /* Ignore OFFSET and ACCESSAS terms here */
+
+ if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
+ node = arg->common.node;
+
+ obj_desc = acpi_ns_get_attached_object(node);
+ if (!obj_desc) {
+ return_ACPI_STATUS(AE_NOT_EXIST);
+ }
+
+ obj_desc->bank_field.value =
+ (u32) operand_desc->integer.value;
+ }
+
+ /* Move to next field in the list */
+
+ arg = arg->common.next;
+ }
+
+ acpi_ut_remove_reference(operand_desc);
+ return_ACPI_STATUS(status);
+}
+
/*******************************************************************************
*
* FUNCTION: acpi_ds_exec_begin_control_op
AML_VAR_PACKAGE_OP)
|| (op->common.parent->common.aml_opcode == AML_BUFFER_OP)
|| (op->common.parent->common.aml_opcode ==
- AML_INT_EVAL_SUBTREE_OP)) {
+ AML_INT_EVAL_SUBTREE_OP)
+ || (op->common.parent->common.aml_opcode ==
+ AML_BANK_FIELD_OP)) {
/*
* These opcodes allow term_arg(s) as operands and therefore
* the operands can be method calls. The result is used.
if (ACPI_FAILURE(status)) {
break;
}
+ } else if (op->common.aml_opcode == AML_BANK_FIELD_OP) {
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "Executing BankField Op=%p\n",
+ op));
+
+ status =
+ acpi_ds_eval_bank_field_operands(walk_state,
+ op);
+ if (ACPI_FAILURE(status)) {
+ break;
+ }
}
break;
acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info)
{
union acpi_operand_object *obj_desc;
+ union acpi_operand_object *second_desc = NULL;
u32 type;
acpi_status status;
obj_desc->field.access_byte_width,
obj_desc->bank_field.region_obj,
obj_desc->bank_field.bank_obj));
+
+ /*
+ * Remember location in AML stream of the field unit
+ * opcode and operands -- since the bank_value
+ * operands must be evaluated.
+ */
+ second_desc = obj_desc->common.next_object;
+ second_desc->extra.aml_start =
+ ((union acpi_parse_object *)(info->data_register_node))->
+ named.data;
+ second_desc->extra.aml_length =
+ ((union acpi_parse_object *)(info->data_register_node))->
+ named.length;
+
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
info->field_count++;
break;
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
+ info->field_count++;
+ break;
+
case ACPI_TYPE_BUFFER:
info->buffer_count++;
break;
status = acpi_ds_get_buffer_field_arguments(obj_desc);
break;
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
+
+ info->field_init++;
+ status = acpi_ds_get_bank_field_arguments(obj_desc);
+ break;
+
case ACPI_TYPE_BUFFER:
info->buffer_init++;
op->named.length = 0;
}
+ if (walk_state->opcode == AML_BANK_FIELD_OP) {
+ /*
+ * Backup to beginning of bank_field declaration
+ * body_length is unknown until we parse the body
+ */
+ op->named.data = aml_op_start;
+ op->named.length = 0;
+ }
+
parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
acpi_ps_append_arg(parent_scope, op);
(u32) (parser_state->aml - op->named.data);
}
+ if (op->common.aml_opcode == AML_BANK_FIELD_OP) {
+ /*
+ * Backup to beginning of bank_field declaration
+ *
+ * body_length is unknown until we parse the body
+ */
+ op->named.length =
+ (u32) (parser_state->aml - op->named.data);
+ }
+
/* This op complete, notify the dispatcher */
if (walk_state->ascending_callback != NULL) {
AML_TYPE_NAMED_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE | AML_FIELD),
/* 5F */ ACPI_OP("BankField", ARGP_BANK_FIELD_OP, ARGI_BANK_FIELD_OP,
- ACPI_TYPE_ANY, AML_CLASS_NAMED_OBJECT,
+ ACPI_TYPE_LOCAL_BANK_FIELD, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_FIELD,
- AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE | AML_FIELD),
+ AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE | AML_FIELD |
+ AML_DEFER),
/* Internal opcodes that map to invalid AML opcodes */
AML_BUFFER_OP)
|| (op->common.parent->common.aml_opcode ==
AML_PACKAGE_OP)
+ || (op->common.parent->common.aml_opcode ==
+ AML_BANK_FIELD_OP)
|| (op->common.parent->common.aml_opcode ==
AML_VAR_PACKAGE_OP)) {
replacement_op =
}
break;
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
+
+ ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
+ "***** Bank Field %p\n", object));
+
+ second_desc = acpi_ns_get_secondary_object(object);
+ if (second_desc) {
+ acpi_ut_delete_object_desc(second_desc);
+ }
+ break;
+
default:
break;
}
switch (type) {
case ACPI_TYPE_REGION:
case ACPI_TYPE_BUFFER_FIELD:
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
/* These types require a secondary object */
acpi_status
acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc);
+acpi_status
+acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc);
+
acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *rgn_desc);
acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc);
union acpi_parse_object *op,
union acpi_operand_object *obj_desc);
+acpi_status
+acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op);
+
acpi_status acpi_ds_initialize_region(acpi_handle obj_handle);
/*
projects / linux-2.6 / commitdiff