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ACPICA: Disassembler: Add support for Operation Region externals

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Adds missing support for operation regions defined in another
table, but referenced via a Field or BankField operator. Generate
the correct External statement.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2012-05-22 16:22:01 +08:00 committed by Len Brown
parent 9fd7522570
commit 6ccd7b5acc
1 changed files with 81 additions and 0 deletions
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81
drivers/acpi/acpica/dsfield.c
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@ -53,11 +53,79 @@
ACPI_MODULE_NAME("dsfield")
/* Local prototypes */
#ifdef ACPI_ASL_COMPILER
#include "acdisasm.h"
static acpi_status
acpi_ds_create_external_region(acpi_status lookup_status,
union acpi_parse_object *op,
char *path,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node **node);
#endif
static acpi_status
acpi_ds_get_field_names(struct acpi_create_field_info *info,
struct acpi_walk_state *walk_state,
union acpi_parse_object *arg);
#ifdef ACPI_ASL_COMPILER
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_external_region (i_aSL Disassembler only)
*
* PARAMETERS: lookup_status - Status from ns_lookup operation
* Op - Op containing the Field definition and args
* Path - Pathname of the region
* ` walk_state - Current method state
* Node - Where the new region node is returned
*
* RETURN: Status
*
* DESCRIPTION: Add region to the external list if NOT_FOUND. Create a new
* region node/object.
*
******************************************************************************/
static acpi_status
acpi_ds_create_external_region(acpi_status lookup_status,
union acpi_parse_object *op,
char *path,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node **node)
{
acpi_status status;
union acpi_operand_object *obj_desc;
if (lookup_status != AE_NOT_FOUND) {
return (lookup_status);
}
/*
* Table disassembly:
* operation_region not found. Generate an External for it, and
* insert the name into the namespace.
*/
acpi_dm_add_to_external_list(op, path, ACPI_TYPE_REGION, 0);
status = acpi_ns_lookup(walk_state->scope_info, path, ACPI_TYPE_REGION,
ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT,
walk_state, node);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Must create and install a region object for the new node */
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
if (!obj_desc) {
return (AE_NO_MEMORY);
}
obj_desc->region.node = *node;
status = acpi_ns_attach_object(*node, obj_desc, ACPI_TYPE_REGION);
return (status);
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_buffer_field
@ -413,12 +481,19 @@ acpi_ds_create_field(union acpi_parse_object *op,
/* First arg is the name of the parent op_region (must already exist) */
arg = op->common.value.arg;
if (!region_node) {
status =
acpi_ns_lookup(walk_state->scope_info,
arg->common.value.name, ACPI_TYPE_REGION,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
walk_state, &region_node);
#ifdef ACPI_ASL_COMPILER
status = acpi_ds_create_external_region(status, arg,
arg->common.value.name,
walk_state,
&region_node);
#endif
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(arg->common.value.name, status);
return_ACPI_STATUS(status);
@ -591,6 +666,12 @@ acpi_ds_create_bank_field(union acpi_parse_object *op,
arg->common.value.name, ACPI_TYPE_REGION,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
walk_state, &region_node);
#ifdef ACPI_ASL_COMPILER
status = acpi_ds_create_external_region(status, arg,
arg->common.value.name,
walk_state,
&region_node);
#endif
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(arg->common.value.name, status);
return_ACPI_STATUS(status);