acpi_status
acpi_ds_result_pop(union acpi_operand_object **object,
struct acpi_walk_state *walk_state)
{
acpi_native_uint index;
union acpi_generic_state *state;
acpi_status status;
ACPI_FUNCTION_NAME(ds_result_pop);
state = walk_state->results;
/* Incorrect state of result stack */
if (state && !walk_state->result_count) {
ACPI_ERROR((AE_INFO, "No results on result stack"));
return (AE_AML_INTERNAL);
}
if (!state && walk_state->result_count) {
ACPI_ERROR((AE_INFO, "No result state for result stack"));
return (AE_AML_INTERNAL);
}
/* Empty result stack */
if (!state) {
ACPI_ERROR((AE_INFO, "Result stack is empty! State=%p",
walk_state));
return (AE_AML_NO_RETURN_VALUE);
}
/* Return object of the top element and clean that top element result stack */
walk_state->result_count--;
index = walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM;
*object = state->results.obj_desc[index];
if (!*object) {
ACPI_ERROR((AE_INFO,
"No result objects on result stack, State=%p",
walk_state));
return (AE_AML_NO_RETURN_VALUE);
}
state->results.obj_desc[index] = NULL;
if (index == 0) {
status = acpi_ds_result_stack_pop(walk_state);
if (ACPI_FAILURE(status)) {
return (status);
}
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Obj=%p [%s] Index=%X State=%p Num=%X\n", *object,
acpi_ut_get_object_type_name(*object),
(u32) index, walk_state, walk_state->result_count));
return (AE_OK);
}
acpi_status
acpi_ns_wrap_with_package(struct acpi_evaluate_info *info,
union acpi_operand_object *original_object,
union acpi_operand_object **obj_desc_ptr)
{
union acpi_operand_object *pkg_obj_desc;
ACPI_FUNCTION_NAME(ns_wrap_with_package);
/*
* Create the new outer package and populate it. The new
* package will have a single element, the lone sub-object.
*/
pkg_obj_desc = acpi_ut_create_package_object(1);
if (!pkg_obj_desc) {
return (AE_NO_MEMORY);
}
pkg_obj_desc->package.elements[0] = original_object;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Wrapped %s with expected Package object\n",
info->full_pathname,
acpi_ut_get_object_type_name(original_object)));
/* Return the new object in the object pointer */
*obj_desc_ptr = pkg_obj_desc;
info->return_flags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED;
return (AE_OK);
}
acpi_status
acpi_ds_obj_stack_push(void *object, struct acpi_walk_state * walk_state)
{
ACPI_FUNCTION_NAME(ds_obj_stack_push);
/* Check for stack overflow */
if (walk_state->num_operands >= ACPI_OBJ_NUM_OPERANDS) {
ACPI_ERROR((AE_INFO,
"Object stack overflow! Obj=%p State=%p #Ops=%X",
object, walk_state, walk_state->num_operands));
return (AE_STACK_OVERFLOW);
}
/* Put the object onto the stack */
walk_state->operands[walk_state->operand_index] = object;
walk_state->num_operands++;
/* For the usual order of filling the operand stack */
walk_state->operand_index++;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p [%s] State=%p #Ops=%X\n",
object,
acpi_ut_get_object_type_name((union
acpi_operand_object *)
object), walk_state,
walk_state->num_operands));
return (AE_OK);
}
acpi_status
acpi_ds_result_push(union acpi_operand_object * object,
struct acpi_walk_state * walk_state)
{
union acpi_generic_state *state;
acpi_status status;
acpi_native_uint index;
ACPI_FUNCTION_NAME(ds_result_push);
if (walk_state->result_count > walk_state->result_size) {
ACPI_ERROR((AE_INFO, "Result stack is full"));
return (AE_AML_INTERNAL);
} else if (walk_state->result_count == walk_state->result_size) {
/* Extend the result stack */
status = acpi_ds_result_stack_push(walk_state);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Failed to extend the result stack"));
return (status);
}
}
if (!(walk_state->result_count < walk_state->result_size)) {
ACPI_ERROR((AE_INFO, "No free elements in result stack"));
return (AE_AML_INTERNAL);
}
state = walk_state->results;
if (!state) {
ACPI_ERROR((AE_INFO, "No result stack frame during push"));
return (AE_AML_INTERNAL);
}
if (!object) {
ACPI_ERROR((AE_INFO,
"Null Object! Obj=%p State=%p Num=%X",
object, walk_state, walk_state->result_count));
return (AE_BAD_PARAMETER);
}
/* Assign the address of object to the top free element of result stack */
index = walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM;
state->results.obj_desc[index] = object;
walk_state->result_count++;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p [%s] State=%p Num=%X Cur=%X\n",
object,
acpi_ut_get_object_type_name((union
acpi_operand_object *)
object), walk_state,
walk_state->result_count,
walk_state->current_result));
return (AE_OK);
}
acpi_status
acpi_ds_result_pop_from_bottom(union acpi_operand_object ** object,
struct acpi_walk_state * walk_state)
{
acpi_native_uint index;
union acpi_generic_state *state;
ACPI_FUNCTION_NAME(ds_result_pop_from_bottom);
state = walk_state->results;
if (!state) {
ACPI_ERROR((AE_INFO,
"No result object pushed! State=%p", walk_state));
return (AE_NOT_EXIST);
}
if (!state->results.num_results) {
ACPI_ERROR((AE_INFO, "No result objects! State=%p",
walk_state));
return (AE_AML_NO_RETURN_VALUE);
}
/* Remove Bottom element */
*object = state->results.obj_desc[0];
/* Push entire stack down one element */
for (index = 0; index < state->results.num_results; index++) {
state->results.obj_desc[index] =
state->results.obj_desc[index + 1];
}
state->results.num_results--;
/* Check for a valid result object */
if (!*object) {
ACPI_ERROR((AE_INFO,
"Null operand! State=%p #Ops=%X Index=%X",
walk_state, state->results.num_results,
(u32) index));
return (AE_AML_NO_RETURN_VALUE);
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p [%s] Results=%p State=%p\n",
*object,
(*object) ? acpi_ut_get_object_type_name(*object) :
"NULL", state, walk_state));
return (AE_OK);
}
void acpi_db_decode_internal_object(union acpi_operand_object *obj_desc)
{
u32 i;
if (!obj_desc) {
acpi_os_printf(" Uninitialized");
return;
}
if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) {
acpi_os_printf(" %p [%s]", obj_desc,
acpi_ut_get_descriptor_name(obj_desc));
return;
}
acpi_os_printf(" %s", acpi_ut_get_object_type_name(obj_desc));
switch (obj_desc->common.type) {
case ACPI_TYPE_INTEGER:
acpi_os_printf(" %8.8X%8.8X",
ACPI_FORMAT_UINT64(obj_desc->integer.value));
break;
case ACPI_TYPE_STRING:
acpi_os_printf("(%u) \"%.24s",
obj_desc->string.length,
obj_desc->string.pointer);
if (obj_desc->string.length > 24) {
acpi_os_printf("...");
} else {
acpi_os_printf("\"");
}
break;
case ACPI_TYPE_BUFFER:
acpi_os_printf("(%u)", obj_desc->buffer.length);
for (i = 0; (i < 8) && (i < obj_desc->buffer.length); i++) {
acpi_os_printf(" %2.2X", obj_desc->buffer.pointer[i]);
}
break;
default:
acpi_os_printf(" %p", obj_desc);
break;
}
}
acpi_status
acpi_ds_result_pop(union acpi_operand_object ** object,
struct acpi_walk_state * walk_state)
{
acpi_native_uint index;
union acpi_generic_state *state;
ACPI_FUNCTION_NAME(ds_result_pop);
state = walk_state->results;
if (!state) {
return (AE_OK);
}
if (!state->results.num_results) {
ACPI_ERROR((AE_INFO, "Result stack is empty! State=%p",
walk_state));
return (AE_AML_NO_RETURN_VALUE);
}
/* Remove top element */
state->results.num_results--;
for (index = ACPI_OBJ_NUM_OPERANDS; index; index--) {
/* Check for a valid result object */
if (state->results.obj_desc[index - 1]) {
*object = state->results.obj_desc[index - 1];
state->results.obj_desc[index - 1] = NULL;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Obj=%p [%s] Index=%X State=%p Num=%X\n",
*object,
(*object) ?
acpi_ut_get_object_type_name(*object)
: "NULL", (u32) index - 1, walk_state,
state->results.num_results));
return (AE_OK);
}
}
ACPI_ERROR((AE_INFO, "No result objects! State=%p", walk_state));
return (AE_AML_NO_RETURN_VALUE);
}
acpi_status
acpi_ds_result_remove(union acpi_operand_object **object,
u32 index, struct acpi_walk_state *walk_state)
{
union acpi_generic_state *state;
ACPI_FUNCTION_NAME(ds_result_remove);
state = walk_state->results;
if (!state) {
ACPI_ERROR((AE_INFO, "No result object pushed! State=%p",
walk_state));
return (AE_NOT_EXIST);
}
if (index >= ACPI_OBJ_MAX_OPERAND) {
ACPI_ERROR((AE_INFO,
"Index out of range: %X State=%p Num=%X",
index, walk_state, state->results.num_results));
}
/* Check for a valid result object */
if (!state->results.obj_desc[index]) {
ACPI_ERROR((AE_INFO,
"Null operand! State=%p #Ops=%X, Index=%X",
walk_state, state->results.num_results, index));
return (AE_AML_NO_RETURN_VALUE);
}
/* Remove the object */
state->results.num_results--;
*object = state->results.obj_desc[index];
state->results.obj_desc[index] = NULL;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Obj=%p [%s] Index=%X State=%p Num=%X\n",
*object,
(*object) ? acpi_ut_get_object_type_name(*object) :
"NULL", index, walk_state,
state->results.num_results));
return (AE_OK);
}
acpi_status
acpi_ds_result_push(union acpi_operand_object * object,
struct acpi_walk_state * walk_state)
{
union acpi_generic_state *state;
ACPI_FUNCTION_NAME(ds_result_push);
state = walk_state->results;
if (!state) {
ACPI_ERROR((AE_INFO, "No result stack frame during push"));
return (AE_AML_INTERNAL);
}
if (state->results.num_results == ACPI_OBJ_NUM_OPERANDS) {
ACPI_ERROR((AE_INFO,
"Result stack overflow: Obj=%p State=%p Num=%X",
object, walk_state, state->results.num_results));
return (AE_STACK_OVERFLOW);
}
if (!object) {
ACPI_ERROR((AE_INFO,
"Null Object! Obj=%p State=%p Num=%X",
object, walk_state, state->results.num_results));
return (AE_BAD_PARAMETER);
}
state->results.obj_desc[state->results.num_results] = object;
state->results.num_results++;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p [%s] State=%p Num=%X Cur=%X\n",
object,
object ?
acpi_ut_get_object_type_name((union
acpi_operand_object *)
object) : "NULL",
walk_state, state->results.num_results,
walk_state->current_result));
return (AE_OK);
}
static acpi_status
acpi_ex_setup_region(union acpi_operand_object *obj_desc,
u32 field_datum_byte_offset)
{
acpi_status status = AE_OK;
union acpi_operand_object *rgn_desc;
u8 space_id;
ACPI_FUNCTION_TRACE_U32(ex_setup_region, field_datum_byte_offset);
rgn_desc = obj_desc->common_field.region_obj;
/* We must have a valid region */
if (rgn_desc->common.type != ACPI_TYPE_REGION) {
ACPI_ERROR((AE_INFO, "Needed Region, found type 0x%X (%s)",
rgn_desc->common.type,
acpi_ut_get_object_type_name(rgn_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
space_id = rgn_desc->region.space_id;
/* Validate the Space ID */
if (!acpi_is_valid_space_id(space_id)) {
ACPI_ERROR((AE_INFO,
"Invalid/unknown Address Space ID: 0x%2.2X",
space_id));
return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
}
/*
* If the Region Address and Length have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(rgn_desc->common.flags & AOPOBJ_DATA_VALID)) {
status = acpi_ds_get_region_arguments(rgn_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/* Exit if Address/Length have been disallowed by the host OS */
if (rgn_desc->common.flags & AOPOBJ_INVALID) {
return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
}
/*
* Exit now for SMBus, GSBus or IPMI address space, it has a non-linear
* address space and the request cannot be directly validated
*/
if (space_id == ACPI_ADR_SPACE_SMBUS ||
space_id == ACPI_ADR_SPACE_GSBUS ||
space_id == ACPI_ADR_SPACE_IPMI) {
/* SMBus or IPMI has a non-linear address space */
return_ACPI_STATUS(AE_OK);
}
#ifdef ACPI_UNDER_DEVELOPMENT
/*
* If the Field access is any_acc, we can now compute the optimal
* access (because we know know the length of the parent region)
*/
if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
#endif
/*
* Validate the request. The entire request from the byte offset for a
* length of one field datum (access width) must fit within the region.
* (Region length is specified in bytes)
*/
if (rgn_desc->region.length <
(obj_desc->common_field.base_byte_offset + field_datum_byte_offset +
obj_desc->common_field.access_byte_width)) {
if (acpi_gbl_enable_interpreter_slack) {
/*
* Slack mode only: We will go ahead and allow access to this
* field if it is within the region length rounded up to the next
* access width boundary. acpi_size cast for 64-bit compile.
*/
if (ACPI_ROUND_UP(rgn_desc->region.length,
obj_desc->common_field.
access_byte_width) >=
((acpi_size) obj_desc->common_field.
base_byte_offset +
obj_desc->common_field.access_byte_width +
field_datum_byte_offset)) {
return_ACPI_STATUS(AE_OK);
}
}
if (rgn_desc->region.length <
obj_desc->common_field.access_byte_width) {
/*
* This is the case where the access_type (acc_word, etc.) is wider
* than the region itself. For example, a region of length one
* byte, and a field with Dword access specified.
*/
ACPI_ERROR((AE_INFO,
"Field [%4.4s] access width (%u bytes) too large for region [%4.4s] (length %u)",
acpi_ut_get_node_name(obj_desc->
common_field.node),
obj_desc->common_field.access_byte_width,
acpi_ut_get_node_name(rgn_desc->region.
node),
rgn_desc->region.length));
}
/*
* Offset rounded up to next multiple of field width
* exceeds region length, indicate an error
*/
ACPI_ERROR((AE_INFO,
"Field [%4.4s] Base+Offset+Width %u+%u+%u is beyond end of region [%4.4s] (length %u)",
acpi_ut_get_node_name(obj_desc->common_field.node),
obj_desc->common_field.base_byte_offset,
field_datum_byte_offset,
obj_desc->common_field.access_byte_width,
acpi_ut_get_node_name(rgn_desc->region.node),
rgn_desc->region.length));
return_ACPI_STATUS(AE_AML_REGION_LIMIT);
}
return_ACPI_STATUS(AE_OK);
}
static void
acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
u32 level, u32 index)
{
u32 i;
ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %*s",
level, " "));
/* Display index for package output only */
if (index > 0) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"(%.2u) ", index - 1));
}
if (!source_desc) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "<Null Object>\n"));
return_VOID;
}
if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: ",
acpi_ut_get_object_type_name
(source_desc)));
if (!acpi_ut_valid_internal_object(source_desc)) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"%p, Invalid Internal Object!\n",
source_desc));
return_VOID;
}
} else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
ACPI_DESC_TYPE_NAMED) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: %p\n",
acpi_ut_get_type_name(((struct
acpi_namespace_node
*)source_desc)->
type),
source_desc));
return_VOID;
} else {
return_VOID;
}
switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
case ACPI_TYPE_INTEGER:
/* Output correct integer width */
if (acpi_gbl_integer_byte_width == 4) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n",
(u32) source_desc->integer.
value));
} else {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"0x%8.8X%8.8X\n",
ACPI_FORMAT_UINT64(source_desc->
integer.
value)));
}
break;
case ACPI_TYPE_BUFFER:
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]\n",
(u32) source_desc->buffer.length));
ACPI_DUMP_BUFFER(source_desc->buffer.pointer,
(source_desc->buffer.length <
32) ? source_desc->buffer.length : 32);
break;
case ACPI_TYPE_STRING:
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n",
source_desc->string.length,
source_desc->string.pointer));
break;
case ACPI_TYPE_PACKAGE:
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"[0x%.2X Elements]\n",
source_desc->package.count));
/* Output the entire contents of the package */
for (i = 0; i < source_desc->package.count; i++) {
acpi_ex_do_debug_object(source_desc->package.
elements[i], level + 4, i + 1);
}
break;
case ACPI_TYPE_LOCAL_REFERENCE:
if (source_desc->reference.opcode == AML_INDEX_OP) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"[%s, 0x%X]\n",
acpi_ps_get_opcode_name
(source_desc->reference.opcode),
source_desc->reference.offset));
} else {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[%s]\n",
acpi_ps_get_opcode_name
(source_desc->reference.opcode)));
}
if (source_desc->reference.object) {
if (ACPI_GET_DESCRIPTOR_TYPE
(source_desc->reference.object) ==
ACPI_DESC_TYPE_NAMED) {
acpi_ex_do_debug_object(((struct
acpi_namespace_node *)
source_desc->reference.
object)->object,
level + 4, 0);
} else {
acpi_ex_do_debug_object(source_desc->reference.
object, level + 4, 0);
}
} else if (source_desc->reference.node) {
acpi_ex_do_debug_object((source_desc->reference.node)->
object, level + 4, 0);
}
break;
default:
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%p %s\n",
source_desc,
acpi_ut_get_object_type_name
(source_desc)));
break;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n"));
return_VOID;
}
acpi_status
acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
struct acpi_namespace_node *node,
struct acpi_walk_state *walk_state,
u8 implicit_conversion)
{
acpi_status status = AE_OK;
union acpi_operand_object *target_desc;
union acpi_operand_object *new_desc;
acpi_object_type target_type;
ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_node, source_desc);
/* Get current type of the node, and object attached to Node */
target_type = acpi_ns_get_type(node);
target_desc = acpi_ns_get_attached_object(node);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p(%s) into node %p(%s)\n",
source_desc,
acpi_ut_get_object_type_name(source_desc), node,
acpi_ut_get_type_name(target_type)));
/*
* Resolve the source object to an actual value
* (If it is a reference object)
*/
status = acpi_ex_resolve_object(&source_desc, target_type, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* If no implicit conversion, drop into the default case below */
if ((!implicit_conversion) || (walk_state->opcode == AML_COPY_OP)) {
/* Force execution of default (no implicit conversion) */
target_type = ACPI_TYPE_ANY;
}
/* Do the actual store operation */
switch (target_type) {
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
/* For fields, copy the source data to the target field. */
status = acpi_ex_write_data_to_field(source_desc, target_desc,
&walk_state->result_obj);
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* These target types are all of type Integer/String/Buffer, and
* therefore support implicit conversion before the store.
*
* Copy and/or convert the source object to a new target object
*/
status =
acpi_ex_store_object_to_object(source_desc, target_desc,
&new_desc, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (new_desc != target_desc) {
/*
* Store the new new_desc as the new value of the Name, and set
* the Name's type to that of the value being stored in it.
* source_desc reference count is incremented by attach_object.
*
* Note: This may change the type of the node if an explicit store
* has been performed such that the node/object type has been
* changed.
*/
status =
acpi_ns_attach_object(node, new_desc,
new_desc->common.type);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Store %s into %s via Convert/Attach\n",
acpi_ut_get_object_type_name
(source_desc),
acpi_ut_get_object_type_name
(new_desc)));
}
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Storing %s (%p) directly into node (%p) with no implicit conversion\n",
acpi_ut_get_object_type_name(source_desc),
source_desc, node));
/* No conversions for all other types. Just attach the source object */
status = acpi_ns_attach_object(node, source_desc,
ACPI_GET_OBJECT_TYPE
(source_desc));
break;
}
return_ACPI_STATUS(status);
}
static acpi_status
acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
union acpi_operand_object *index_desc,
struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_operand_object *obj_desc;
union acpi_operand_object *new_desc;
u8 value = 0;
u32 i;
ACPI_FUNCTION_TRACE(ex_store_object_to_index);
/*
* Destination must be a reference pointer, and
* must point to either a buffer or a package
*/
switch (index_desc->reference.target_type) {
case ACPI_TYPE_PACKAGE:
/*
* Storing to a package element. Copy the object and replace
* any existing object with the new object. No implicit
* conversion is performed.
*
* The object at *(index_desc->Reference.Where) is the
* element within the package that is to be modified.
* The parent package object is at index_desc->Reference.Object
*/
obj_desc = *(index_desc->reference.where);
status =
acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (obj_desc) {
/* Decrement reference count by the ref count of the parent package */
for (i = 0; i < ((union acpi_operand_object *)
index_desc->reference.object)->common.
reference_count; i++) {
acpi_ut_remove_reference(obj_desc);
}
}
*(index_desc->reference.where) = new_desc;
/* Increment ref count by the ref count of the parent package-1 */
for (i = 1; i < ((union acpi_operand_object *)
index_desc->reference.object)->common.
reference_count; i++) {
acpi_ut_add_reference(new_desc);
}
break;
case ACPI_TYPE_BUFFER_FIELD:
/*
* Store into a Buffer or String (not actually a real buffer_field)
* at a location defined by an Index.
*
* The first 8-bit element of the source object is written to the
* 8-bit Buffer location defined by the Index destination object,
* according to the ACPI 2.0 specification.
*/
/*
* Make sure the target is a Buffer or String. An error should
* not happen here, since the reference_object was constructed
* by the INDEX_OP code.
*/
obj_desc = index_desc->reference.object;
if ((ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_BUFFER) &&
(ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_STRING)) {
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/*
* The assignment of the individual elements will be slightly
* different for each source type.
*/
switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
case ACPI_TYPE_INTEGER:
/* Use the least-significant byte of the integer */
value = (u8) (source_desc->integer.value);
break;
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_STRING:
/* Note: Takes advantage of common string/buffer fields */
value = source_desc->buffer.pointer[0];
break;
default:
/* All other types are invalid */
ACPI_ERROR((AE_INFO,
"Source must be Integer/Buffer/String type, not %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/* Store the source value into the target buffer byte */
obj_desc->buffer.pointer[index_desc->reference.offset] = value;
break;
default:
ACPI_ERROR((AE_INFO, "Target is not a Package or BufferField"));
status = AE_AML_OPERAND_TYPE;
break;
}
return_ACPI_STATUS(status);
}
acpi_status
acpi_ex_setup_region (
union acpi_operand_object *obj_desc,
u32 field_datum_byte_offset)
{
acpi_status status = AE_OK;
union acpi_operand_object *rgn_desc;
ACPI_FUNCTION_TRACE_U32 ("ex_setup_region", field_datum_byte_offset);
rgn_desc = obj_desc->common_field.region_obj;
/* We must have a valid region */
if (ACPI_GET_OBJECT_TYPE (rgn_desc) != ACPI_TYPE_REGION) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Needed Region, found type %X (%s)\n",
ACPI_GET_OBJECT_TYPE (rgn_desc),
acpi_ut_get_object_type_name (rgn_desc)));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/*
* If the Region Address and Length have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(rgn_desc->common.flags & AOPOBJ_DATA_VALID)) {
status = acpi_ds_get_region_arguments (rgn_desc);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
}
if (rgn_desc->region.space_id == ACPI_ADR_SPACE_SMBUS) {
/* SMBus has a non-linear address space */
return_ACPI_STATUS (AE_OK);
}
#ifdef ACPI_UNDER_DEVELOPMENT
/*
* If the Field access is any_acc, we can now compute the optimal
* access (because we know know the length of the parent region)
*/
if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
}
#endif
/*
* Validate the request. The entire request from the byte offset for a
* length of one field datum (access width) must fit within the region.
* (Region length is specified in bytes)
*/
if (rgn_desc->region.length < (obj_desc->common_field.base_byte_offset
+ field_datum_byte_offset
+ obj_desc->common_field.access_byte_width)) {
if (rgn_desc->region.length < obj_desc->common_field.access_byte_width) {
/*
* This is the case where the access_type (acc_word, etc.) is wider
* than the region itself. For example, a region of length one
* byte, and a field with Dword access specified.
*/
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Field [%4.4s] access width (%d bytes) too large for region [%4.4s] (length %X)\n",
obj_desc->common_field.node->name.ascii, obj_desc->common_field.access_byte_width,
rgn_desc->region.node->name.ascii, rgn_desc->region.length));
}
/*
* Offset rounded up to next multiple of field width
* exceeds region length, indicate an error
*/
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Field [%4.4s] Base+Offset+Width %X+%X+%X is beyond end of region [%4.4s] (length %X)\n",
obj_desc->common_field.node->name.ascii, obj_desc->common_field.base_byte_offset,
field_datum_byte_offset, obj_desc->common_field.access_byte_width,
rgn_desc->region.node->name.ascii, rgn_desc->region.length));
#ifdef CONFIG_ACPI_RELAXED_AML
{
/*
* Allow access to the field if it is within the region size
* rounded up to a multiple of the access byte width. This
* overcomes "off-by-one" programming errors in the AML often
* found in Toshiba laptops. These errors were allowed by
* the Microsoft ASL compiler.
*/
u32 rounded_length = ACPI_ROUND_UP(rgn_desc->region.length,
obj_desc->common_field.access_byte_width);
if (rounded_length < (obj_desc->common_field.base_byte_offset
+ field_datum_byte_offset
+ obj_desc->common_field.access_byte_width)) {
return_ACPI_STATUS (AE_AML_REGION_LIMIT);
} else {
static int warn_once = 1;
if (warn_once) {
// Could also associate a flag with each field, and
// warn once for each field.
ACPI_REPORT_WARNING((
"The ACPI AML in your computer contains errors, "
"please nag the manufacturer to correct it.\n"));
ACPI_REPORT_WARNING((
"Allowing relaxed access to fields; "
"turn on CONFIG_ACPI_DEBUG for details.\n"));
warn_once = 0;
}
return_ACPI_STATUS (AE_OK);
}
}
#else
return_ACPI_STATUS (AE_AML_REGION_LIMIT);
#endif
}
return_ACPI_STATUS (AE_OK);
}
acpi_status
acpi_ex_load_op(union acpi_operand_object *obj_desc,
union acpi_operand_object *target,
struct acpi_walk_state *walk_state)
{
acpi_status status;
union acpi_operand_object *ddb_handle;
union acpi_operand_object *buffer_desc = NULL;
struct acpi_table_header *table_ptr = NULL;
acpi_physical_address address;
struct acpi_table_header table_header;
acpi_integer temp;
u32 i;
ACPI_FUNCTION_TRACE(ex_load_op);
/* Object can be either an op_region or a Field */
switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
case ACPI_TYPE_REGION:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Region %p %s\n",
obj_desc,
acpi_ut_get_object_type_name(obj_desc)));
/*
* If the Region Address and Length have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
status = acpi_ds_get_region_arguments(obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/* Get the base physical address of the region */
address = obj_desc->region.address;
/* Get part of the table header to get the table length */
table_header.length = 0;
for (i = 0; i < 8; i++) {
status =
acpi_ev_address_space_dispatch(obj_desc, ACPI_READ,
(acpi_physical_address)
(i + address), 8,
&temp);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the one valid byte of the returned 64-bit value */
ACPI_CAST_PTR(u8, &table_header)[i] = (u8) temp;
}
/* Sanity check the table length */
if (table_header.length < sizeof(struct acpi_table_header)) {
return_ACPI_STATUS(AE_BAD_HEADER);
}
/* Allocate a buffer for the entire table */
table_ptr = ACPI_ALLOCATE(table_header.length);
if (!table_ptr) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Get the entire table from the op region */
for (i = 0; i < table_header.length; i++) {
status =
acpi_ev_address_space_dispatch(obj_desc, ACPI_READ,
(acpi_physical_address)
(i + address), 8,
&temp);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/* Get the one valid byte of the returned 64-bit value */
ACPI_CAST_PTR(u8, table_ptr)[i] = (u8) temp;
}
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Field %p %s\n",
obj_desc,
acpi_ut_get_object_type_name(obj_desc)));
/*
* The length of the field must be at least as large as the table.
* Read the entire field and thus the entire table. Buffer is
* allocated during the read.
*/
status =
acpi_ex_read_data_from_field(walk_state, obj_desc,
&buffer_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
table_ptr = ACPI_CAST_PTR(struct acpi_table_header,
buffer_desc->buffer.pointer);
/* All done with the buffer_desc, delete it */
buffer_desc->buffer.pointer = NULL;
acpi_ut_remove_reference(buffer_desc);
/* Sanity check the table length */
if (table_ptr->length < sizeof(struct acpi_table_header)) {
status = AE_BAD_HEADER;
goto cleanup;
}
break;
default:
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/* The table must be either an SSDT or a PSDT or an OEMx */
if ((!ACPI_COMPARE_NAME(table_ptr->signature, PSDT_SIG)) &&
(!ACPI_COMPARE_NAME(table_ptr->signature, SSDT_SIG)) &&
(strncmp(table_ptr->signature, "OEM", 3))) {
ACPI_ERROR((AE_INFO,
"Table has invalid signature [%4.4s], must be SSDT, PSDT or OEMx",
table_ptr->signature));
status = AE_BAD_SIGNATURE;
goto cleanup;
}
/* Install the new table into the local data structures */
status = acpi_ex_add_table(table_ptr, acpi_gbl_root_node, &ddb_handle);
if (ACPI_FAILURE(status)) {
/* On error, table_ptr was deallocated above */
return_ACPI_STATUS(status);
}
/* Store the ddb_handle into the Target operand */
status = acpi_ex_store(ddb_handle, target, walk_state);
if (ACPI_FAILURE(status)) {
(void)acpi_ex_unload_table(ddb_handle);
/* table_ptr was deallocated above */
return_ACPI_STATUS(status);
}
ACPI_INFO((AE_INFO,
"Dynamic SSDT Load - OemId [%6.6s] OemTableId [%8.8s]",
table_ptr->oem_id, table_ptr->oem_table_id));
cleanup:
if (ACPI_FAILURE(status)) {
ACPI_FREE(table_ptr);
}
return_ACPI_STATUS(status);
}
static acpi_status
acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
acpi_size * obj_length)
{
acpi_size length;
acpi_size size;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_PTR(ut_get_simple_object_size, internal_object);
if (!internal_object) {
*obj_length = sizeof(union acpi_object);
return_ACPI_STATUS(AE_OK);
}
length = sizeof(union acpi_object);
if (ACPI_GET_DESCRIPTOR_TYPE(internal_object) == ACPI_DESC_TYPE_NAMED) {
*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length);
return_ACPI_STATUS(status);
}
switch (internal_object->common.type) {
case ACPI_TYPE_STRING:
length += (acpi_size) internal_object->string.length + 1;
break;
case ACPI_TYPE_BUFFER:
length += (acpi_size) internal_object->buffer.length;
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
break;
case ACPI_TYPE_LOCAL_REFERENCE:
switch (internal_object->reference.class) {
case ACPI_REFCLASS_NAME:
size =
acpi_ns_get_pathname_length(internal_object->
reference.node);
if (!size) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
length += ACPI_ROUND_UP_TO_NATIVE_WORD(size);
break;
default:
ACPI_ERROR((AE_INFO,
"Cannot convert to external object - "
"unsupported Reference Class [%s] %X in object %p",
acpi_ut_get_reference_name(internal_object),
internal_object->reference.class,
internal_object));
status = AE_TYPE;
break;
}
break;
default:
ACPI_ERROR((AE_INFO, "Cannot convert to external object - "
"unsupported type [%s] %X in object %p",
acpi_ut_get_object_type_name(internal_object),
internal_object->common.type, internal_object));
status = AE_TYPE;
break;
}
*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ns_simple_repair(struct acpi_evaluate_info *info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object *new_object = NULL;
acpi_status status;
const struct acpi_simple_repair_info *predefined;
ACPI_FUNCTION_NAME(ns_simple_repair);
/*
* Special repairs for certain names that are in the repair table.
* Check if this name is in the list of repairable names.
*/
predefined = acpi_ns_match_simple_repair(info->node,
info->return_btype,
package_index);
if (predefined) {
if (!return_object) {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
ACPI_WARN_ALWAYS,
"Missing expected return value"));
}
status = predefined->object_converter(info->node, return_object,
&new_object);
if (ACPI_FAILURE(status)) {
/* A fatal error occurred during a conversion */
ACPI_EXCEPTION((AE_INFO, status,
"During return object analysis"));
return (status);
}
if (new_object) {
goto object_repaired;
}
}
/*
* Do not perform simple object repair unless the return type is not
* expected.
*/
if (info->return_btype & expected_btypes) {
return (AE_OK);
}
/*
* At this point, we know that the type of the returned object was not
* one of the expected types for this predefined name. Attempt to
* repair the object by converting it to one of the expected object
* types for this predefined name.
*/
/*
* If there is no return value, check if we require a return value for
* this predefined name. Either one return value is expected, or none,
* for both methods and other objects.
*
* Try to fix if there was no return object. Warning if failed to fix.
*/
if (!return_object) {
if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) {
if (package_index != ACPI_NOT_PACKAGE_ELEMENT) {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
ACPI_WARN_ALWAYS,
"Found unexpected NULL package element"));
status =
acpi_ns_repair_null_element(info,
expected_btypes,
package_index,
return_object_ptr);
if (ACPI_SUCCESS(status)) {
return (AE_OK); /* Repair was successful */
}
} else {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
ACPI_WARN_ALWAYS,
"Missing expected return value"));
}
return (AE_AML_NO_RETURN_VALUE);
}
}
if (expected_btypes & ACPI_RTYPE_INTEGER) {
status = acpi_ns_convert_to_integer(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_STRING) {
status = acpi_ns_convert_to_string(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_BUFFER) {
status = acpi_ns_convert_to_buffer(return_object, &new_object);
if (ACPI_SUCCESS(status)) {
goto object_repaired;
}
}
if (expected_btypes & ACPI_RTYPE_PACKAGE) {
/*
* A package is expected. We will wrap the existing object with a
* new package object. It is often the case that if a variable-length
* package is required, but there is only a single object needed, the
* BIOS will return that object instead of wrapping it with a Package
* object. Note: after the wrapping, the package will be validated
* for correct contents (expected object type or types).
*/
status =
acpi_ns_wrap_with_package(info, return_object, &new_object);
if (ACPI_SUCCESS(status)) {
/*
* The original object just had its reference count
* incremented for being inserted into the new package.
*/
*return_object_ptr = new_object; /* New Package object */
info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
}
/* We cannot repair this object */
return (AE_AML_OPERAND_TYPE);
object_repaired:
/* Object was successfully repaired */
if (package_index != ACPI_NOT_PACKAGE_ELEMENT) {
/*
* The original object is a package element. We need to
* decrement the reference count of the original object,
* for removing it from the package.
*
* However, if the original object was just wrapped with a
* package object as part of the repair, we don't need to
* change the reference count.
*/
if (!(info->return_flags & ACPI_OBJECT_WRAPPED)) {
new_object->common.reference_count =
return_object->common.reference_count;
if (return_object->common.reference_count > 1) {
return_object->common.reference_count--;
}
}
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s at Package index %u\n",
info->full_pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object),
package_index));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s\n",
info->full_pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object)));
}
/* Delete old object, install the new return object */
acpi_ut_remove_reference(return_object);
*return_object_ptr = new_object;
info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
{
void *obj_pointer = NULL;
union acpi_operand_object *handler_desc;
union acpi_operand_object *second_desc;
union acpi_operand_object *next_desc;
ACPI_FUNCTION_TRACE_PTR(ut_delete_internal_obj, object);
if (!object) {
return_VOID;
}
/*
* Must delete or free any pointers within the object that are not
* actual ACPI objects (for example, a raw buffer pointer).
*/
switch (ACPI_GET_OBJECT_TYPE(object)) {
case ACPI_TYPE_STRING:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"**** String %p, ptr %p\n", object,
object->string.pointer));
/* Free the actual string buffer */
if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
/* But only if it is NOT a pointer into an ACPI table */
obj_pointer = object->string.pointer;
}
break;
case ACPI_TYPE_BUFFER:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"**** Buffer %p, ptr %p\n", object,
object->buffer.pointer));
/* Free the actual buffer */
if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
/* But only if it is NOT a pointer into an ACPI table */
obj_pointer = object->buffer.pointer;
}
break;
case ACPI_TYPE_PACKAGE:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
" **** Package of count %X\n",
object->package.count));
/*
* Elements of the package are not handled here, they are deleted
* separately
*/
/* Free the (variable length) element pointer array */
obj_pointer = object->package.elements;
break;
case ACPI_TYPE_DEVICE:
if (object->device.gpe_block) {
(void)acpi_ev_delete_gpe_block(object->device.
gpe_block);
}
/* Walk the handler list for this device */
handler_desc = object->device.handler;
while (handler_desc) {
next_desc = handler_desc->address_space.next;
acpi_ut_remove_reference(handler_desc);
handler_desc = next_desc;
}
break;
case ACPI_TYPE_MUTEX:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Mutex %p, OS Mutex %p\n",
object, object->mutex.os_mutex));
if (object->mutex.os_mutex == acpi_gbl_global_lock_mutex) {
/* Global Lock has extra semaphore */
(void)
acpi_os_delete_semaphore
(acpi_gbl_global_lock_semaphore);
acpi_gbl_global_lock_semaphore = NULL;
acpi_os_delete_mutex(object->mutex.os_mutex);
acpi_gbl_global_lock_mutex = NULL;
} else {
acpi_ex_unlink_mutex(object);
acpi_os_delete_mutex(object->mutex.os_mutex);
}
break;
case ACPI_TYPE_EVENT:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Event %p, OS Semaphore %p\n",
object, object->event.os_semaphore));
(void)acpi_os_delete_semaphore(object->event.os_semaphore);
object->event.os_semaphore = NULL;
break;
case ACPI_TYPE_METHOD:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Method %p\n", object));
/* Delete the method mutex if it exists */
if (object->method.mutex) {
acpi_os_delete_mutex(object->method.mutex->mutex.
os_mutex);
acpi_ut_delete_object_desc(object->method.mutex);
object->method.mutex = NULL;
}
break;
case ACPI_TYPE_REGION:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Region %p\n", object));
second_desc = acpi_ns_get_secondary_object(object);
if (second_desc) {
/*
* Free the region_context if and only if the handler is one of the
* default handlers -- and therefore, we created the context object
* locally, it was not created by an external caller.
*/
handler_desc = object->region.handler;
if (handler_desc) {
if (handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
/* Deactivate region and free region context */
if (handler_desc->address_space.setup) {
(void)handler_desc->
address_space.setup(object,
ACPI_REGION_DEACTIVATE,
handler_desc->
address_space.
context,
&second_desc->
extra.
region_context);
}
}
acpi_ut_remove_reference(handler_desc);
}
/* Now we can free the Extra object */
acpi_ut_delete_object_desc(second_desc);
}
break;
case ACPI_TYPE_BUFFER_FIELD:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Buffer 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;
}
/* Free any allocated memory (pointer within the object) found above */
if (obj_pointer) {
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"Deleting Object Subptr %p\n", obj_pointer));
ACPI_FREE(obj_pointer);
}
/* Now the object can be safely deleted */
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n",
object, acpi_ut_get_object_type_name(object)));
acpi_ut_delete_object_desc(object);
return_VOID;
}
acpi_status
acpi_ut_evaluate_object(struct acpi_namespace_node * prefix_node,
char *path,
u32 expected_return_btypes,
union acpi_operand_object **return_desc)
{
struct acpi_evaluate_info *info;
acpi_status status;
u32 return_btype;
ACPI_FUNCTION_TRACE(ut_evaluate_object);
/* Allocate the evaluation information block */
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
info->prefix_node = prefix_node;
info->pathname = path;
/* Evaluate the object/method */
status = acpi_ns_evaluate(info);
if (ACPI_FAILURE(status)) {
if (status == AE_NOT_FOUND) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[%4.4s.%s] was not found\n",
acpi_ut_get_node_name(prefix_node),
path));
} else {
ACPI_ERROR_METHOD("Method execution failed",
prefix_node, path, status);
}
goto cleanup;
}
/* Did we get a return object? */
if (!info->return_object) {
if (expected_return_btypes) {
ACPI_ERROR_METHOD("No object was returned from",
prefix_node, path, AE_NOT_EXIST);
status = AE_NOT_EXIST;
}
goto cleanup;
}
/* Map the return object type to the bitmapped type */
switch ((info->return_object)->common.type) {
case ACPI_TYPE_INTEGER:
return_btype = ACPI_BTYPE_INTEGER;
break;
case ACPI_TYPE_BUFFER:
return_btype = ACPI_BTYPE_BUFFER;
break;
case ACPI_TYPE_STRING:
return_btype = ACPI_BTYPE_STRING;
break;
case ACPI_TYPE_PACKAGE:
return_btype = ACPI_BTYPE_PACKAGE;
break;
default:
return_btype = 0;
break;
}
if ((acpi_gbl_enable_interpreter_slack) && (!expected_return_btypes)) {
/*
* We received a return object, but one was not expected. This can
* happen frequently if the "implicit return" feature is enabled.
* Just delete the return object and return AE_OK.
*/
acpi_ut_remove_reference(info->return_object);
goto cleanup;
}
/* Is the return object one of the expected types? */
if (!(expected_return_btypes & return_btype)) {
ACPI_ERROR_METHOD("Return object type is incorrect",
prefix_node, path, AE_TYPE);
ACPI_ERROR((AE_INFO,
"Type returned from %s was incorrect: %s, expected Btypes: 0x%X",
path,
acpi_ut_get_object_type_name(info->return_object),
expected_return_btypes));
/* On error exit, we must delete the return object */
acpi_ut_remove_reference(info->return_object);
status = AE_TYPE;
goto cleanup;
}
/* Object type is OK, return it */
*return_desc = info->return_object;
cleanup:
ACPI_FREE(info);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ns_repair_null_element(struct acpi_evaluate_info * info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object *new_object;
ACPI_FUNCTION_NAME(ns_repair_null_element);
/* No repair needed if return object is non-NULL */
if (return_object) {
return (AE_OK);
}
/*
* Attempt to repair a NULL element of a Package object. This applies to
* predefined names that return a fixed-length package and each element
* is required. It does not apply to variable-length packages where NULL
* elements are allowed, especially at the end of the package.
*/
if (expected_btypes & ACPI_RTYPE_INTEGER) {
/* Need an integer - create a zero-value integer */
new_object = acpi_ut_create_integer_object((u64)0);
} else if (expected_btypes & ACPI_RTYPE_STRING) {
/* Need a string - create a NULL string */
new_object = acpi_ut_create_string_object(0);
} else if (expected_btypes & ACPI_RTYPE_BUFFER) {
/* Need a buffer - create a zero-length buffer */
new_object = acpi_ut_create_buffer_object(0);
} else {
/* Error for all other expected types */
return (AE_AML_OPERAND_TYPE);
}
if (!new_object) {
return (AE_NO_MEMORY);
}
/* Set the reference count according to the parent Package object */
new_object->common.reference_count =
info->parent_package->common.reference_count;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted NULL package element to expected %s at index %u\n",
info->full_pathname,
acpi_ut_get_object_type_name(new_object),
package_index));
*return_object_ptr = new_object;
info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
acpi_status
acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
union acpi_operand_object *obj_desc,
union acpi_operand_object **result_desc)
{
acpi_status status;
u32 length;
void *buffer;
union acpi_operand_object *buffer_desc;
u32 function;
ACPI_FUNCTION_TRACE_PTR(ex_write_data_to_field, obj_desc);
if (!source_desc || !obj_desc) {
return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
if (obj_desc->common.type == ACPI_TYPE_BUFFER_FIELD) {
if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
status = acpi_ds_get_buffer_field_arguments(obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
} else if ((obj_desc->common.type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
(obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_SMBUS
|| obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GSBUS
|| obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_IPMI)) {
if (source_desc->common.type != ACPI_TYPE_BUFFER) {
ACPI_ERROR((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires Buffer, found type %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
if (obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_SMBUS) {
length = ACPI_SMBUS_BUFFER_SIZE;
function =
ACPI_WRITE | (obj_desc->field.attribute << 16);
} else if (obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GSBUS) {
length = ACPI_GSBUS_BUFFER_SIZE;
function =
ACPI_WRITE | (obj_desc->field.attribute << 16);
} else {
length = ACPI_IPMI_BUFFER_SIZE;
function = ACPI_WRITE;
}
if (source_desc->buffer.length < length) {
ACPI_ERROR((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires Buffer of length %u, found length %u",
length, source_desc->buffer.length));
return_ACPI_STATUS(AE_AML_BUFFER_LIMIT);
}
buffer_desc = acpi_ut_create_buffer_object(length);
if (!buffer_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
buffer = buffer_desc->buffer.pointer;
ACPI_MEMCPY(buffer, source_desc->buffer.pointer, length);
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
status = acpi_ex_access_region(obj_desc, 0,
(u64 *) buffer, function);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
*result_desc = buffer_desc;
return_ACPI_STATUS(status);
}
/* Get a pointer to the data to be written */
switch (source_desc->common.type) {
case ACPI_TYPE_INTEGER:
buffer = &source_desc->integer.value;
length = sizeof(source_desc->integer.value);
break;
case ACPI_TYPE_BUFFER:
buffer = source_desc->buffer.pointer;
length = source_desc->buffer.length;
break;
case ACPI_TYPE_STRING:
buffer = source_desc->string.pointer;
length = source_desc->string.length;
break;
default:
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n",
source_desc,
acpi_ut_get_type_name(source_desc->common.type),
source_desc->common.type, buffer, length));
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"FieldWrite [TO]: Obj %p (%s:%X), BitLen %X, BitOff %X, ByteOff %X\n",
obj_desc,
acpi_ut_get_type_name(obj_desc->common.type),
obj_desc->common.type,
obj_desc->common_field.bit_length,
obj_desc->common_field.start_field_bit_offset,
obj_desc->common_field.base_byte_offset));
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
status = acpi_ex_insert_into_field(obj_desc, buffer, length);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
return_ACPI_STATUS(status);
}
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)
{
u32 offset;
u32 bit_offset;
u32 bit_count;
u8 field_flags;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ds_init_buffer_field, obj_desc);
/* Host object must be a Buffer */
if (buffer_desc->common.type != ACPI_TYPE_BUFFER) {
ACPI_ERROR((AE_INFO,
"Target of Create Field is not a Buffer object - %s",
acpi_ut_get_object_type_name(buffer_desc)));
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
/*
* The last parameter to all of these opcodes (result_desc) started
* out as a name_string, and should therefore now be a NS node
* after resolution in acpi_ex_resolve_operands().
*/
if (ACPI_GET_DESCRIPTOR_TYPE(result_desc) != ACPI_DESC_TYPE_NAMED) {
ACPI_ERROR((AE_INFO,
"(%s) destination not a NS Node [%s]",
acpi_ps_get_opcode_name(aml_opcode),
acpi_ut_get_descriptor_name(result_desc)));
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
offset = (u32) offset_desc->integer.value;
/*
* Setup the Bit offsets and counts, according to the opcode
*/
switch (aml_opcode) {
case AML_CREATE_FIELD_OP:
/* Offset is in bits, count is in bits */
field_flags = AML_FIELD_ACCESS_BYTE;
bit_offset = offset;
bit_count = (u32) length_desc->integer.value;
/* Must have a valid (>0) bit count */
if (bit_count == 0) {
ACPI_ERROR((AE_INFO,
"Attempt to CreateField of length zero"));
status = AE_AML_OPERAND_VALUE;
goto cleanup;
}
break;
case AML_CREATE_BIT_FIELD_OP:
/* Offset is in bits, Field is one bit */
bit_offset = offset;
bit_count = 1;
field_flags = AML_FIELD_ACCESS_BYTE;
break;
case AML_CREATE_BYTE_FIELD_OP:
/* Offset is in bytes, field is one byte */
bit_offset = 8 * offset;
bit_count = 8;
field_flags = AML_FIELD_ACCESS_BYTE;
break;
case AML_CREATE_WORD_FIELD_OP:
/* Offset is in bytes, field is one word */
bit_offset = 8 * offset;
bit_count = 16;
field_flags = AML_FIELD_ACCESS_WORD;
break;
case AML_CREATE_DWORD_FIELD_OP:
/* Offset is in bytes, field is one dword */
bit_offset = 8 * offset;
bit_count = 32;
field_flags = AML_FIELD_ACCESS_DWORD;
break;
case AML_CREATE_QWORD_FIELD_OP:
/* Offset is in bytes, field is one qword */
bit_offset = 8 * offset;
bit_count = 64;
field_flags = AML_FIELD_ACCESS_QWORD;
break;
default:
ACPI_ERROR((AE_INFO,
"Unknown field creation opcode 0x%02X",
aml_opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
/* Entire field must fit within the current length of the buffer */
if ((bit_offset + bit_count) > (8 * (u32) buffer_desc->buffer.length)) {
ACPI_ERROR((AE_INFO,
"Field [%4.4s] at %u exceeds Buffer [%4.4s] size %u (bits)",
acpi_ut_get_node_name(result_desc),
bit_offset + bit_count,
acpi_ut_get_node_name(buffer_desc->buffer.node),
8 * (u32) buffer_desc->buffer.length));
status = AE_AML_BUFFER_LIMIT;
goto cleanup;
}
/*
* 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)
*/
status = acpi_ex_prep_common_field_object(obj_desc, field_flags, 0,
bit_offset, bit_count);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
obj_desc->buffer_field.buffer_obj = buffer_desc;
/* 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);
cleanup:
/* Always delete the operands */
acpi_ut_remove_reference(offset_desc);
acpi_ut_remove_reference(buffer_desc);
if (aml_opcode == AML_CREATE_FIELD_OP) {
acpi_ut_remove_reference(length_desc);
}
/* On failure, delete the result descriptor */
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(result_desc); /* Result descriptor */
} else {
/* Now the address and length are valid for this buffer_field */
obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID;
}
return_ACPI_STATUS(status);
}
acpi_status
acpi_ex_convert_to_target_type(acpi_object_type destination_type,
union acpi_operand_object *source_desc,
union acpi_operand_object **result_desc,
struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ex_convert_to_target_type);
/* Default behavior */
*result_desc = source_desc;
/*
* If required by the target,
* perform implicit conversion on the source before we store it.
*/
switch (GET_CURRENT_ARG_TYPE(walk_state->op_info->runtime_args)) {
case ARGI_SIMPLE_TARGET:
case ARGI_FIXED_TARGET:
case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */
switch (destination_type) {
case ACPI_TYPE_LOCAL_REGION_FIELD:
/*
* Named field can always handle conversions
*/
break;
default:
/* No conversion allowed for these types */
if (destination_type !=
ACPI_GET_OBJECT_TYPE(source_desc)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Explicit operator, will store (%s) over existing type (%s)\n",
acpi_ut_get_object_type_name
(source_desc),
acpi_ut_get_type_name
(destination_type)));
status = AE_TYPE;
}
}
break;
case ARGI_TARGETREF:
switch (destination_type) {
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
/*
* These types require an Integer operand. We can convert
* a Buffer or a String to an Integer if necessary.
*/
status =
acpi_ex_convert_to_integer(source_desc, result_desc,
16);
break;
case ACPI_TYPE_STRING:
/*
* The operand must be a String. We can convert an
* Integer or Buffer if necessary
*/
status =
acpi_ex_convert_to_string(source_desc, result_desc,
ACPI_IMPLICIT_CONVERT_HEX);
break;
case ACPI_TYPE_BUFFER:
/*
* The operand must be a Buffer. We can convert an
* Integer or String if necessary
*/
status =
acpi_ex_convert_to_buffer(source_desc, result_desc);
break;
default:
ACPI_ERROR((AE_INFO,
"Bad destination type during conversion: %X",
destination_type));
status = AE_AML_INTERNAL;
break;
}
break;
case ARGI_REFERENCE:
/*
* create_xxxx_field cases - we are storing the field object into the name
*/
break;
default:
ACPI_ERROR((AE_INFO,
"Unknown Target type ID 0x%X AmlOpcode %X DestType %s",
GET_CURRENT_ARG_TYPE(walk_state->op_info->runtime_args),
walk_state->opcode, acpi_ut_get_type_name(destination_type)));
status = AE_AML_INTERNAL;
}
/*
* Source-to-Target conversion semantics:
*
* If conversion to the target type cannot be performed, then simply
* overwrite the target with the new object and type.
*/
if (status == AE_TYPE) {
status = AE_OK;
}
return_ACPI_STATUS(status);
}
static void
acpi_ex_dump_object(union acpi_operand_object *obj_desc,
struct acpi_exdump_info *info)
{
u8 *target;
char *name;
u8 count;
if (!info) {
acpi_os_printf
("ExDumpObject: Display not implemented for object type %s\n",
acpi_ut_get_object_type_name(obj_desc));
return;
}
/* First table entry must contain the table length (# of table entries) */
count = info->offset;
while (count) {
target = ACPI_ADD_PTR(u8, obj_desc, info->offset);
name = info->name;
switch (info->opcode) {
case ACPI_EXD_INIT:
break;
case ACPI_EXD_TYPE:
acpi_ex_out_string("Type",
acpi_ut_get_object_type_name
(obj_desc));
break;
case ACPI_EXD_UINT8:
acpi_os_printf("%20s : %2.2X\n", name, *target);
break;
case ACPI_EXD_UINT16:
acpi_os_printf("%20s : %4.4X\n", name,
ACPI_GET16(target));
break;
case ACPI_EXD_UINT32:
acpi_os_printf("%20s : %8.8X\n", name,
ACPI_GET32(target));
break;
case ACPI_EXD_UINT64:
acpi_os_printf("%20s : %8.8X%8.8X\n", "Value",
ACPI_FORMAT_UINT64(ACPI_GET64(target)));
break;
case ACPI_EXD_POINTER:
acpi_ex_out_pointer(name,
*ACPI_CAST_PTR(void *, target));
break;
case ACPI_EXD_ADDRESS:
acpi_ex_out_address(name,
*ACPI_CAST_PTR
(acpi_physical_address, target));
break;
case ACPI_EXD_STRING:
acpi_ut_print_string(obj_desc->string.pointer,
ACPI_UINT8_MAX);
acpi_os_printf("\n");
break;
case ACPI_EXD_BUFFER:
ACPI_DUMP_BUFFER(obj_desc->buffer.pointer,
obj_desc->buffer.length);
break;
case ACPI_EXD_PACKAGE:
/* Dump the package contents */
acpi_os_printf("\nPackage Contents:\n");
acpi_ex_dump_package_obj(obj_desc, 0, 0);
break;
case ACPI_EXD_FIELD:
acpi_ex_dump_object(obj_desc,
acpi_ex_dump_field_common);
break;
case ACPI_EXD_REFERENCE:
acpi_ex_out_string("Opcode",
(acpi_ps_get_opcode_info
(obj_desc->reference.opcode))->
name);
acpi_ex_dump_reference_obj(obj_desc);
break;
default:
acpi_os_printf("**** Invalid table opcode [%X] ****\n",
info->opcode);
return;
}
info++;
count--;
}
}
acpi_status
acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
union acpi_operand_object *obj_desc,
union acpi_operand_object **result_desc)
{
acpi_status status;
u32 length;
void *buffer;
union acpi_operand_object *buffer_desc;
u32 function;
u16 accessor_type;
ACPI_FUNCTION_TRACE_PTR(ex_write_data_to_field, obj_desc);
/* Parameter validation */
if (!source_desc || !obj_desc) {
return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
if (obj_desc->common.type == ACPI_TYPE_BUFFER_FIELD) {
/*
* If the buffer_field arguments have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
status = acpi_ds_get_buffer_field_arguments(obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
} else if ((obj_desc->common.type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
(obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_SMBUS
|| obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GSBUS
|| obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_IPMI)) {
/*
* This is an SMBus, GSBus or IPMI write. We will bypass the entire field
* mechanism and handoff the buffer directly to the handler. For
* these address spaces, the buffer is bi-directional; on a write,
* return data is returned in the same buffer.
*
* Source must be a buffer of sufficient size:
* ACPI_SMBUS_BUFFER_SIZE, ACPI_GSBUS_BUFFER_SIZE, or ACPI_IPMI_BUFFER_SIZE.
*
* Note: SMBus and GSBus protocol type is passed in upper 16-bits of Function
*/
if (source_desc->common.type != ACPI_TYPE_BUFFER) {
ACPI_ERROR((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires Buffer, found type %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
if (obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_SMBUS) {
length = ACPI_SMBUS_BUFFER_SIZE;
function =
ACPI_WRITE | (obj_desc->field.attribute << 16);
} else if (obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GSBUS) {
accessor_type = obj_desc->field.attribute;
length = acpi_ex_get_serial_access_length(accessor_type,
obj_desc->
field.
access_length);
/*
* Add additional 2 bytes for the generic_serial_bus data buffer:
*
* Status; (Byte 0 of the data buffer)
* Length; (Byte 1 of the data buffer)
* Data[x-1]; (Bytes 2-x of the arbitrary length data buffer)
*/
length += 2;
function = ACPI_WRITE | (accessor_type << 16);
} else { /* IPMI */
length = ACPI_IPMI_BUFFER_SIZE;
function = ACPI_WRITE;
}
if (source_desc->buffer.length < length) {
ACPI_ERROR((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires Buffer of length %u, found length %u",
length, source_desc->buffer.length));
return_ACPI_STATUS(AE_AML_BUFFER_LIMIT);
}
/* Create the bi-directional buffer */
buffer_desc = acpi_ut_create_buffer_object(length);
if (!buffer_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
buffer = buffer_desc->buffer.pointer;
ACPI_MEMCPY(buffer, source_desc->buffer.pointer, length);
/* Lock entire transaction if requested */
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/*
* Perform the write (returns status and perhaps data in the
* same buffer)
*/
status = acpi_ex_access_region(obj_desc, 0,
(u64 *) buffer, function);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
*result_desc = buffer_desc;
return_ACPI_STATUS(status);
} else if ((obj_desc->common.type == ACPI_TYPE_LOCAL_REGION_FIELD) &&
(obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GPIO)) {
/*
* For GPIO (general_purpose_io), we will bypass the entire field
* mechanism and handoff the bit address and bit width directly to
* the handler. The Address will be the bit offset
* from the previous Connection() operator, making it effectively a
* pin number index. The bit_length is the length of the field, which
* is thus the number of pins.
*/
if (source_desc->common.type != ACPI_TYPE_INTEGER) {
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"GPIO FieldWrite [FROM]: (%s:%X), Val %.8X [TO]: Pin %u Bits %u\n",
acpi_ut_get_type_name(source_desc->common.
type),
source_desc->common.type,
(u32)source_desc->integer.value,
obj_desc->field.pin_number_index,
obj_desc->field.bit_length));
buffer = &source_desc->integer.value;
/* Lock entire transaction if requested */
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/* Perform the write */
status = acpi_ex_access_region(obj_desc, 0,
(u64 *)buffer, ACPI_WRITE);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
return_ACPI_STATUS(status);
}
/* Get a pointer to the data to be written */
switch (source_desc->common.type) {
case ACPI_TYPE_INTEGER:
buffer = &source_desc->integer.value;
length = sizeof(source_desc->integer.value);
break;
case ACPI_TYPE_BUFFER:
buffer = source_desc->buffer.pointer;
length = source_desc->buffer.length;
break;
case ACPI_TYPE_STRING:
buffer = source_desc->string.pointer;
length = source_desc->string.length;
break;
default:
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n",
source_desc,
acpi_ut_get_type_name(source_desc->common.type),
source_desc->common.type, buffer, length));
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"FieldWrite [TO]: Obj %p (%s:%X), BitLen %X, BitOff %X, ByteOff %X\n",
obj_desc,
acpi_ut_get_type_name(obj_desc->common.type),
obj_desc->common.type,
obj_desc->common_field.bit_length,
obj_desc->common_field.start_field_bit_offset,
obj_desc->common_field.base_byte_offset));
/* Lock entire transaction if requested */
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/* Write to the field */
status = acpi_ex_insert_into_field(obj_desc, buffer, length);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ex_store(union acpi_operand_object *source_desc,
union acpi_operand_object *dest_desc,
struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_operand_object *ref_desc = dest_desc;
ACPI_FUNCTION_TRACE_PTR(ex_store, dest_desc);
/* Validate parameters */
if (!source_desc || !dest_desc) {
ACPI_ERROR((AE_INFO, "Null parameter"));
return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
/* dest_desc can be either a namespace node or an ACPI object */
if (ACPI_GET_DESCRIPTOR_TYPE(dest_desc) == ACPI_DESC_TYPE_NAMED) {
/*
* Dest is a namespace node,
* Storing an object into a Named node.
*/
status = acpi_ex_store_object_to_node(source_desc,
(struct
acpi_namespace_node *)
dest_desc, walk_state,
ACPI_IMPLICIT_CONVERSION);
return_ACPI_STATUS(status);
}
/* Destination object must be a Reference or a Constant object */
switch (ACPI_GET_OBJECT_TYPE(dest_desc)) {
case ACPI_TYPE_LOCAL_REFERENCE:
break;
case ACPI_TYPE_INTEGER:
/* Allow stores to Constants -- a Noop as per ACPI spec */
if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) {
return_ACPI_STATUS(AE_OK);
}
/*lint -fallthrough */
default:
/* Destination is not a Reference object */
ACPI_ERROR((AE_INFO,
"Target is not a Reference or Constant object - %s [%p]",
acpi_ut_get_object_type_name(dest_desc),
dest_desc));
ACPI_DUMP_STACK_ENTRY(source_desc);
ACPI_DUMP_STACK_ENTRY(dest_desc);
ACPI_DUMP_OPERANDS(&dest_desc, ACPI_IMODE_EXECUTE, "ExStore",
2,
"Target is not a Reference or Constant object");
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/*
* Examine the Reference opcode. These cases are handled:
*
* 1) Store to Name (Change the object associated with a name)
* 2) Store to an indexed area of a Buffer or Package
* 3) Store to a Method Local or Arg
* 4) Store to the debug object
*/
switch (ref_desc->reference.opcode) {
case AML_NAME_OP:
case AML_REF_OF_OP:
/* Storing an object into a Name "container" */
status = acpi_ex_store_object_to_node(source_desc,
ref_desc->reference.
object, walk_state,
ACPI_IMPLICIT_CONVERSION);
break;
case AML_INDEX_OP:
/* Storing to an Index (pointer into a packager or buffer) */
status =
acpi_ex_store_object_to_index(source_desc, ref_desc,
walk_state);
break;
case AML_LOCAL_OP:
case AML_ARG_OP:
/* Store to a method local/arg */
status =
acpi_ds_store_object_to_local(ref_desc->reference.opcode,
ref_desc->reference.offset,
source_desc, walk_state);
break;
case AML_DEBUG_OP:
/*
* Storing to the Debug object causes the value stored to be
* displayed and otherwise has no effect -- see ACPI Specification
*/
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"**** Write to Debug Object: Object %p %s ****:\n\n",
source_desc,
acpi_ut_get_object_type_name(source_desc)));
acpi_ex_do_debug_object(source_desc, 0, 0);
break;
default:
ACPI_ERROR((AE_INFO, "Unknown Reference opcode %X",
ref_desc->reference.opcode));
ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_ERROR);
status = AE_AML_INTERNAL;
break;
}
return_ACPI_STATUS(status);
}
static acpi_status
acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
acpi_size * obj_length)
{
acpi_size length;
acpi_size size;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_PTR(ut_get_simple_object_size, internal_object);
/*
* Handle a null object (Could be a uninitialized package
* element -- which is legal)
*/
if (!internal_object) {
*obj_length = sizeof(union acpi_object);
return_ACPI_STATUS(AE_OK);
}
/* Start with the length of the Acpi object */
length = sizeof(union acpi_object);
if (ACPI_GET_DESCRIPTOR_TYPE(internal_object) == ACPI_DESC_TYPE_NAMED) {
/* Object is a named object (reference), just return the length */
*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length);
return_ACPI_STATUS(status);
}
/*
* The final length depends on the object type
* Strings and Buffers are packed right up against the parent object and
* must be accessed bytewise or there may be alignment problems on
* certain processors
*/
switch (internal_object->common.type) {
case ACPI_TYPE_STRING:
length += (acpi_size) internal_object->string.length + 1;
break;
case ACPI_TYPE_BUFFER:
length += (acpi_size) internal_object->buffer.length;
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
/* No extra data for these types */
break;
case ACPI_TYPE_LOCAL_REFERENCE:
switch (internal_object->reference.class) {
case ACPI_REFCLASS_NAME:
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
*/
size =
acpi_ns_get_pathname_length(internal_object->
reference.node);
if (!size) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
length += ACPI_ROUND_UP_TO_NATIVE_WORD(size);
break;
default:
/*
* No other reference opcodes are supported.
* Notably, Locals and Args are not supported, but this may be
* required eventually.
*/
ACPI_ERROR((AE_INFO,
"Cannot convert to external object - "
"unsupported Reference Class [%s] %X in object %p",
acpi_ut_get_reference_name(internal_object),
internal_object->reference.class,
internal_object));
status = AE_TYPE;
break;
}
break;
default:
ACPI_ERROR((AE_INFO, "Cannot convert to external object - "
"unsupported type [%s] %X in object %p",
acpi_ut_get_object_type_name(internal_object),
internal_object->common.type, internal_object));
status = AE_TYPE;
break;
}
/*
* Account for the space required by the object rounded up to the next
* multiple of the machine word size. This keeps each object aligned
* on a machine word boundary. (preventing alignment faults on some
* machines.)
*/
*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ex_field_datum_io (
union acpi_operand_object *obj_desc,
u32 field_datum_byte_offset,
acpi_integer *value,
u32 read_write)
{
acpi_status status;
acpi_integer local_value;
ACPI_FUNCTION_TRACE_U32 ("ex_field_datum_io", field_datum_byte_offset);
if (read_write == ACPI_READ) {
if (!value) {
local_value = 0;
value = &local_value; /* To support reads without saving return value */
}
/* Clear the entire return buffer first, [Very Important!] */
*value = 0;
}
/*
* The four types of fields are:
*
* buffer_field - Read/write from/to a Buffer
* region_field - Read/write from/to a Operation Region.
* bank_field - Write to a Bank Register, then read/write from/to an op_region
* index_field - Write to an Index Register, then read/write from/to a Data Register
*/
switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
case ACPI_TYPE_BUFFER_FIELD:
/*
* If the buffer_field arguments have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
status = acpi_ds_get_buffer_field_arguments (obj_desc);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
}
if (read_write == ACPI_READ) {
/*
* Copy the data from the source buffer.
* Length is the field width in bytes.
*/
ACPI_MEMCPY (value, (obj_desc->buffer_field.buffer_obj)->buffer.pointer
+ obj_desc->buffer_field.base_byte_offset
+ field_datum_byte_offset,
obj_desc->common_field.access_byte_width);
}
else {
/*
* Copy the data to the target buffer.
* Length is the field width in bytes.
*/
ACPI_MEMCPY ((obj_desc->buffer_field.buffer_obj)->buffer.pointer
+ obj_desc->buffer_field.base_byte_offset
+ field_datum_byte_offset,
value, obj_desc->common_field.access_byte_width);
}
status = AE_OK;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
/* Ensure that the bank_value is not beyond the capacity of the register */
if (acpi_ex_register_overflow (obj_desc->bank_field.bank_obj,
(acpi_integer) obj_desc->bank_field.value)) {
return_ACPI_STATUS (AE_AML_REGISTER_LIMIT);
}
/*
* For bank_fields, we must write the bank_value to the bank_register
* (itself a region_field) before we can access the data.
*/
status = acpi_ex_insert_into_field (obj_desc->bank_field.bank_obj,
&obj_desc->bank_field.value,
sizeof (obj_desc->bank_field.value));
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/*
* Now that the Bank has been selected, fall through to the
* region_field case and write the datum to the Operation Region
*/
/*lint -fallthrough */
case ACPI_TYPE_LOCAL_REGION_FIELD:
/*
* For simple region_fields, we just directly access the owning
* Operation Region.
*/
status = acpi_ex_access_region (obj_desc, field_datum_byte_offset, value,
read_write);
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
/* Ensure that the index_value is not beyond the capacity of the register */
if (acpi_ex_register_overflow (obj_desc->index_field.index_obj,
(acpi_integer) obj_desc->index_field.value)) {
return_ACPI_STATUS (AE_AML_REGISTER_LIMIT);
}
/* Write the index value to the index_register (itself a region_field) */
field_datum_byte_offset += obj_desc->index_field.value;
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"Write to Index Register: Value %8.8X\n",
field_datum_byte_offset));
status = acpi_ex_insert_into_field (obj_desc->index_field.index_obj,
&field_datum_byte_offset,
sizeof (field_datum_byte_offset));
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"I/O to Data Register: value_ptr %p\n",
value));
if (read_write == ACPI_READ) {
/* Read the datum from the data_register */
status = acpi_ex_extract_from_field (obj_desc->index_field.data_obj,
value, sizeof (acpi_integer));
}
else {
/* Write the datum to the data_register */
status = acpi_ex_insert_into_field (obj_desc->index_field.data_obj,
value, sizeof (acpi_integer));
}
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%p, Wrong object type - %s\n",
obj_desc, acpi_ut_get_object_type_name (obj_desc)));
status = AE_AML_INTERNAL;
break;
}
if (ACPI_SUCCESS (status)) {
if (read_write == ACPI_READ) {
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "Value Read %8.8X%8.8X, Width %d\n",
ACPI_HIDWORD (*value), ACPI_LODWORD (*value),
obj_desc->common_field.access_byte_width));
}
else {
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "Value Written %8.8X%8.8X, Width %d\n",
ACPI_HIDWORD (*value), ACPI_LODWORD (*value),
obj_desc->common_field.access_byte_width));
}
}
return_ACPI_STATUS (status);
}
acpi_status
acpi_ex_get_object_reference (
union acpi_operand_object *obj_desc,
union acpi_operand_object **return_desc,
struct acpi_walk_state *walk_state)
{
union acpi_operand_object *reference_obj;
union acpi_operand_object *referenced_obj;
ACPI_FUNCTION_TRACE_PTR ("ex_get_object_reference", obj_desc);
*return_desc = NULL;
switch (ACPI_GET_DESCRIPTOR_TYPE (obj_desc)) {
case ACPI_DESC_TYPE_OPERAND:
if (ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_LOCAL_REFERENCE) {
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/*
* Must be a reference to a Local or Arg
*/
switch (obj_desc->reference.opcode) {
case AML_LOCAL_OP:
case AML_ARG_OP:
/* The referenced object is the pseudo-node for the local/arg */
referenced_obj = obj_desc->reference.object;
break;
default:
ACPI_REPORT_ERROR (("Unknown Reference subtype in get ref %X\n",
obj_desc->reference.opcode));
return_ACPI_STATUS (AE_AML_INTERNAL);
}
break;
case ACPI_DESC_TYPE_NAMED:
/*
* A named reference that has already been resolved to a Node
*/
referenced_obj = obj_desc;
break;
default:
ACPI_REPORT_ERROR (("Invalid descriptor type in get ref: %X\n",
ACPI_GET_DESCRIPTOR_TYPE (obj_desc)));
return_ACPI_STATUS (AE_TYPE);
}
/* Create a new reference object */
reference_obj = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_REFERENCE);
if (!reference_obj) {
return_ACPI_STATUS (AE_NO_MEMORY);
}
reference_obj->reference.opcode = AML_REF_OF_OP;
reference_obj->reference.object = referenced_obj;
*return_desc = reference_obj;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object %p Type [%s], returning Reference %p\n",
obj_desc, acpi_ut_get_object_type_name (obj_desc), *return_desc));
return_ACPI_STATUS (AE_OK);
}
static void
acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
u32 level, u32 index)
{
u32 i;
ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);
/* Print line header as long as we are not in the middle of an object display */
if (!((level > 0) && index == 0)) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %*s",
level, " "));
}
/* Display index for package output only */
if (index > 0) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"(%.2u) ", index - 1));
}
if (!source_desc) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[Null Object]\n"));
return_VOID;
}
if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s ",
acpi_ut_get_object_type_name
(source_desc)));
if (!acpi_ut_valid_internal_object(source_desc)) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"%p, Invalid Internal Object!\n",
source_desc));
return_VOID;
}
} else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
ACPI_DESC_TYPE_NAMED) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: %p\n",
acpi_ut_get_type_name(((struct
acpi_namespace_node
*)source_desc)->
type),
source_desc));
return_VOID;
} else {
return_VOID;
}
/* source_desc is of type ACPI_DESC_TYPE_OPERAND */
switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
case ACPI_TYPE_INTEGER:
/* Output correct integer width */
if (acpi_gbl_integer_byte_width == 4) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n",
(u32) source_desc->integer.
value));
} else {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"0x%8.8X%8.8X\n",
ACPI_FORMAT_UINT64(source_desc->
integer.
value)));
}
break;
case ACPI_TYPE_BUFFER:
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]\n",
(u32) source_desc->buffer.length));
ACPI_DUMP_BUFFER(source_desc->buffer.pointer,
(source_desc->buffer.length <
256) ? source_desc->buffer.length : 256);
break;
case ACPI_TYPE_STRING:
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n",
source_desc->string.length,
source_desc->string.pointer));
break;
case ACPI_TYPE_PACKAGE:
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"[Contains 0x%.2X Elements]\n",
source_desc->package.count));
/* Output the entire contents of the package */
for (i = 0; i < source_desc->package.count; i++) {
acpi_ex_do_debug_object(source_desc->package.
elements[i], level + 4, i + 1);
}
break;
case ACPI_TYPE_LOCAL_REFERENCE:
if (source_desc->reference.opcode == AML_INDEX_OP) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"[%s, 0x%X]\n",
acpi_ps_get_opcode_name
(source_desc->reference.opcode),
source_desc->reference.offset));
} else {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[%s]",
acpi_ps_get_opcode_name
(source_desc->reference.opcode)));
}
if (source_desc->reference.opcode == AML_LOAD_OP) { /* Load and load_table */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
" Table OwnerId %p\n",
source_desc->reference.object));
break;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, " "));
/* Check for valid node first, then valid object */
if (source_desc->reference.node) {
if (ACPI_GET_DESCRIPTOR_TYPE
(source_desc->reference.node) !=
ACPI_DESC_TYPE_NAMED) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
" %p - Not a valid namespace node\n",
source_desc->reference.
node));
} else {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
"Node %p [%4.4s] ",
source_desc->reference.
node,
(source_desc->reference.
node)->name.ascii));
switch ((source_desc->reference.node)->type) {
/* These types have no attached object */
case ACPI_TYPE_DEVICE:
acpi_os_printf("Device\n");
break;
case ACPI_TYPE_THERMAL:
acpi_os_printf("Thermal Zone\n");
break;
default:
acpi_ex_do_debug_object((source_desc->
reference.
node)->object,
level + 4, 0);
break;
}
}
} else if (source_desc->reference.object) {
if (ACPI_GET_DESCRIPTOR_TYPE
(source_desc->reference.object) ==
ACPI_DESC_TYPE_NAMED) {
acpi_ex_do_debug_object(((struct
acpi_namespace_node *)
source_desc->reference.
object)->object,
level + 4, 0);
} else {
acpi_ex_do_debug_object(source_desc->reference.
object, level + 4, 0);
}
}
break;
default:
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%p\n",
source_desc));
break;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n"));
return_VOID;
}
