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path: root/drivers/acpi/acpica/dsfield.c
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Diffstat (limited to 'drivers/acpi/acpica/dsfield.c')
-rw-r--r--drivers/acpi/acpica/dsfield.c103
1 files changed, 92 insertions, 11 deletions
diff --git a/drivers/acpi/acpica/dsfield.c b/drivers/acpi/acpica/dsfield.c
index cd243cf2cab..3da6fd8530c 100644
--- a/drivers/acpi/acpica/dsfield.c
+++ b/drivers/acpi/acpica/dsfield.c
@@ -53,16 +53,84 @@
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 (iASL 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
*
- * PARAMETERS: Op - Current parse op (create_xXField)
+ * PARAMETERS: op - Current parse op (create_XXField)
* walk_state - Current state
*
* RETURN: Status
@@ -99,7 +167,7 @@ acpi_ds_create_buffer_field(union acpi_parse_object *op,
arg = acpi_ps_get_arg(op, 3);
} else {
- /* For all other create_xXXField operators, name is the 3rd argument */
+ /* For all other create_XXXField operators, name is the 3rd argument */
arg = acpi_ps_get_arg(op, 2);
}
@@ -203,9 +271,9 @@ acpi_ds_create_buffer_field(union acpi_parse_object *op,
*
* FUNCTION: acpi_ds_get_field_names
*
- * PARAMETERS: Info - create_field info structure
+ * PARAMETERS: info - create_field info structure
* ` walk_state - Current method state
- * Arg - First parser arg for the field name list
+ * arg - First parser arg for the field name list
*
* RETURN: Status
*
@@ -234,10 +302,10 @@ acpi_ds_get_field_names(struct acpi_create_field_info *info,
while (arg) {
/*
* Four types of field elements are handled:
- * 1) Name - Enters a new named field into the namespace
- * 2) Offset - specifies a bit offset
+ * 1) name - Enters a new named field into the namespace
+ * 2) offset - specifies a bit offset
* 3) access_as - changes the access mode/attributes
- * 4) Connection - Associate a resource template with the field
+ * 4) connection - Associate a resource template with the field
*/
switch (arg->common.aml_opcode) {
case AML_INT_RESERVEDFIELD_OP:
@@ -389,7 +457,7 @@ acpi_ds_get_field_names(struct acpi_create_field_info *info,
*
* FUNCTION: acpi_ds_create_field
*
- * PARAMETERS: Op - Op containing the Field definition and args
+ * PARAMETERS: op - Op containing the Field definition and args
* region_node - Object for the containing Operation Region
* ` walk_state - Current method state
*
@@ -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);
@@ -446,7 +521,7 @@ acpi_ds_create_field(union acpi_parse_object *op,
*
* FUNCTION: acpi_ds_init_field_objects
*
- * PARAMETERS: Op - Op containing the Field definition and args
+ * PARAMETERS: op - Op containing the Field definition and args
* ` walk_state - Current method state
*
* RETURN: Status
@@ -561,7 +636,7 @@ acpi_ds_init_field_objects(union acpi_parse_object *op,
*
* FUNCTION: acpi_ds_create_bank_field
*
- * PARAMETERS: Op - Op containing the Field definition and args
+ * PARAMETERS: op - Op containing the Field definition and args
* region_node - Object for the containing Operation Region
* walk_state - Current method state
*
@@ -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);
@@ -645,7 +726,7 @@ acpi_ds_create_bank_field(union acpi_parse_object *op,
*
* FUNCTION: acpi_ds_create_index_field
*
- * PARAMETERS: Op - Op containing the Field definition and args
+ * PARAMETERS: op - Op containing the Field definition and args
* region_node - Object for the containing Operation Region
* ` walk_state - Current method state
*
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 15:03:11 +0000