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ACPICA: Module-level code: enable _REG execution in same scope

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This change enables the execution of _REG methods that appear
in the same scope as the module-level code, in resonse to an
operation region declaration within the module-level code.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Lin Ming 2009-12-11 15:28:27 +08:00 committed by Len Brown
parent 465da9eb75
commit e31c32cfe5
6 changed files with 36 additions and 4 deletions
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6
drivers/acpi/acpica/acobject.h
View File

@ -180,7 +180,11 @@ struct acpi_object_method {
u8 sync_level;
union acpi_operand_object *mutex;
u8 *aml_start;
ACPI_INTERNAL_METHOD implementation;
union {
ACPI_INTERNAL_METHOD implementation;
union acpi_operand_object *handler;
} extra;
u32 aml_length;
u8 thread_count;
acpi_owner_id owner_id;

2
drivers/acpi/acpica/dsmethod.c
View File

@ -414,7 +414,7 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
/* Invoke an internal method if necessary */
if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
status = obj_desc->method.implementation(next_walk_state);
status = obj_desc->method.extra.implementation(next_walk_state);
if (status == AE_OK) {
status = AE_CTRL_TERMINATE;
}

15
drivers/acpi/acpica/evrgnini.c
View File

@ -575,6 +575,21 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
handler_obj = obj_desc->thermal_zone.handler;
break;
case ACPI_TYPE_METHOD:
/*
* If we are executing module level code, the original
* Node's object was replaced by this Method object and we
* saved the handler in the method object.
*
* See acpi_ns_exec_module_code
*/
if (obj_desc->method.
flags & AOPOBJ_MODULE_LEVEL) {
handler_obj =
obj_desc->method.extra.handler;
}
break;
default:
/* Ignore other objects */
break;

2
drivers/acpi/acpica/nsaccess.c
View File

@ -165,7 +165,7 @@ acpi_status acpi_ns_root_initialize(void)
obj_desc->method.method_flags =
AML_METHOD_INTERNAL_ONLY;
obj_desc->method.implementation =
obj_desc->method.extra.implementation =
acpi_ut_osi_implementation;
#endif
break;

12
drivers/acpi/acpica/nseval.c
View File

@ -381,6 +381,18 @@ acpi_ns_exec_module_code(union acpi_operand_object *method_obj,
method_obj->method.next_object);
type = acpi_ns_get_type(parent_node);
/*
* Get the region handler and save it in the method object. We may need
* this if an operation region declaration causes a _REG method to be run.
*
* We can't do this in acpi_ps_link_module_code because
* acpi_gbl_root_node->Object is NULL at PASS1.
*/
if ((type == ACPI_TYPE_DEVICE) && parent_node->object) {
method_obj->method.extra.handler =
parent_node->object->device.handler;
}
/* Must clear next_object (acpi_ns_attach_object needs the field) */
method_obj->method.next_object = NULL;

3
drivers/acpi/acpica/psxface.c
View File

@ -287,7 +287,8 @@ acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
/* Invoke an internal method if necessary */
if (info->obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
status = info->obj_desc->method.implementation(walk_state);
status =
info->obj_desc->method.extra.implementation(walk_state);
info->return_object = walk_state->return_desc;
/* Cleanup states */