acpi_status
acpi_ns_handle_to_pathname(acpi_handle target_handle,
struct acpi_buffer * buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
acpi_size required_size;
ACPI_FUNCTION_TRACE_PTR(ns_handle_to_pathname, target_handle);
node = acpi_ns_map_handle_to_node(target_handle);
if (!node) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Determine size required for the caller buffer */
required_size = acpi_ns_get_pathname_length(node);
/* Validate/Allocate/Clear caller buffer */
status = acpi_ut_initialize_buffer(buffer, required_size);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Build the path in the caller buffer */
acpi_ns_build_external_path(node, required_size, buffer->pointer);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s [%X]\n",
(char *)buffer->pointer, (u32) required_size));
return_ACPI_STATUS(AE_OK);
}
char *
acpi_ns_get_external_pathname (
struct acpi_namespace_node *node)
{
char *name_buffer;
acpi_size size;
ACPI_FUNCTION_TRACE_PTR ("ns_get_external_pathname", node);
/* Calculate required buffer size based on depth below root */
size = acpi_ns_get_pathname_length (node);
/* Allocate a buffer to be returned to caller */
name_buffer = ACPI_MEM_CALLOCATE (size);
if (!name_buffer) {
ACPI_REPORT_ERROR (("ns_get_table_pathname: allocation failure\n"));
return_PTR (NULL);
}
/* Build the path in the allocated buffer */
acpi_ns_build_external_path (node, size, name_buffer);
return_PTR (name_buffer);
}
char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
{
acpi_status status;
char *name_buffer;
acpi_size size;
ACPI_FUNCTION_TRACE_PTR(ns_get_external_pathname, node);
/* Calculate required buffer size based on depth below root */
size = acpi_ns_get_pathname_length(node);
if (!size) {
return_PTR(NULL);
}
/* Allocate a buffer to be returned to caller */
name_buffer = ACPI_ALLOCATE_ZEROED(size);
if (!name_buffer) {
ACPI_ERROR((AE_INFO, "Could not allocate %u bytes", (u32)size));
return_PTR(NULL);
}
/* Build the path in the allocated buffer */
status = acpi_ns_build_external_path(node, size, name_buffer);
if (ACPI_FAILURE(status)) {
ACPI_FREE(name_buffer);
return_PTR(NULL);
}
return_PTR(name_buffer);
}
char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
{
acpi_status status;
char *name_buffer;
acpi_size size;
ACPI_FUNCTION_TRACE_PTR(ns_get_external_pathname, node);
size = acpi_ns_get_pathname_length(node);
if (!size) {
return_PTR(NULL);
}
name_buffer = ACPI_ALLOCATE_ZEROED(size);
if (!name_buffer) {
ACPI_ERROR((AE_INFO, "Could not allocate %u bytes", (u32)size));
return_PTR(NULL);
}
status = acpi_ns_build_external_path(node, size, name_buffer);
if (ACPI_FAILURE(status)) {
ACPI_FREE(name_buffer);
return_PTR(NULL);
}
return_PTR(name_buffer);
}
acpi_status
acpi_ns_handle_to_pathname(acpi_handle target_handle,
struct acpi_buffer * buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
acpi_size required_size;
ACPI_FUNCTION_TRACE_PTR(ns_handle_to_pathname, target_handle);
node = acpi_ns_validate_handle(target_handle);
if (!node) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
required_size = acpi_ns_get_pathname_length(node);
if (!required_size) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_initialize_buffer(buffer, required_size);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status =
acpi_ns_build_external_path(node, required_size, buffer->pointer);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s [%X]\n",
(char *)buffer->pointer, (u32) required_size));
return_ACPI_STATUS(AE_OK);
}
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);
}
static acpi_status
acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
acpi_size * obj_length)
{
acpi_size length;
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 (ACPI_GET_OBJECT_TYPE(internal_object)) {
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.opcode) {
case AML_INT_NAMEPATH_OP:
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
*/
length +=
ACPI_ROUND_UP_TO_NATIVE_WORD
(acpi_ns_get_pathname_length
(internal_object->reference.node));
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,
"Unsupported Reference opcode=%X in object %p",
internal_object->reference.opcode,
internal_object));
status = AE_TYPE;
break;
}
break;
default:
ACPI_ERROR((AE_INFO, "Unsupported type=%X in object %p",
ACPI_GET_OBJECT_TYPE(internal_object),
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_ns_handle_to_pathname (
acpi_handle target_handle,
u32 *buf_size,
NATIVE_CHAR *user_buffer)
{
acpi_status status = AE_OK;
acpi_namespace_node *node;
u32 path_length;
u32 user_buf_size;
acpi_name name;
u32 size;
FUNCTION_TRACE_PTR ("Ns_handle_to_pathname", target_handle);
if (!acpi_gbl_root_node) {
/*
* If the name space has not been initialized,
* this function should not have been called.
*/
return_ACPI_STATUS (AE_NO_NAMESPACE);
}
node = acpi_ns_map_handle_to_node (target_handle);
if (!node) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Set return length to the required path length */
path_length = acpi_ns_get_pathname_length (node);
size = path_length - 1;
user_buf_size = *buf_size;
*buf_size = path_length;
/* Check if the user buffer is sufficiently large */
if (path_length > user_buf_size) {
status = AE_BUFFER_OVERFLOW;
goto exit;
}
/* Store null terminator */
user_buffer[size] = 0;
size -= ACPI_NAME_SIZE;
/* Put the original ACPI name at the end of the path */
MOVE_UNALIGNED32_TO_32 ((user_buffer + size),
&node->name);
user_buffer[--size] = PATH_SEPARATOR;
/* Build name backwards, putting "." between segments */
while ((size > ACPI_NAME_SIZE) && node) {
size -= ACPI_NAME_SIZE;
name = acpi_ns_find_parent_name (node);
MOVE_UNALIGNED32_TO_32 ((user_buffer + size), &name);
user_buffer[--size] = PATH_SEPARATOR;
node = acpi_ns_get_parent_object (node);
}
/*
* Overlay the "." preceding the first segment with
* the root name "\"
*/
user_buffer[size] = '\\';
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Len=%X, %s \n", path_length, user_buffer));
exit:
return_ACPI_STATUS (status);
}
acpi_status
acpi_rs_calculate_pci_routing_table_length (
acpi_operand_object *package_object,
u32 *buffer_size_needed)
{
u32 number_of_elements;
u32 temp_size_needed = 0;
acpi_operand_object **top_object_list;
u32 index;
acpi_operand_object *package_element;
acpi_operand_object **sub_object_list;
u8 name_found;
u32 table_index;
FUNCTION_TRACE ("Rs_calculate_pci_routing_table_length");
number_of_elements = package_object->package.count;
/*
* Calculate the size of the return buffer.
* The base size is the number of elements * the sizes of the
* structures. Additional space for the strings is added below.
* The minus one is to subtract the size of the u8 Source[1]
* member because it is added below.
*
* But each PRT_ENTRY structure has a pointer to a string and
* the size of that string must be found.
*/
top_object_list = package_object->package.elements;
for (index = 0; index < number_of_elements; index++) {
/*
* Dereference the sub-package
*/
package_element = *top_object_list;
/*
* The Sub_object_list will now point to an array of the
* four IRQ elements: Address, Pin, Source and Source_index
*/
sub_object_list = package_element->package.elements;
/*
* Scan the Irq_table_elements for the Source Name String
*/
name_found = FALSE;
for (table_index = 0; table_index < 4 && !name_found; table_index++) {
if ((ACPI_TYPE_STRING == (*sub_object_list)->common.type) ||
((INTERNAL_TYPE_REFERENCE == (*sub_object_list)->common.type) &&
((*sub_object_list)->reference.opcode == AML_INT_NAMEPATH_OP))) {
name_found = TRUE;
}
else {
/*
* Look at the next element
*/
sub_object_list++;
}
}
temp_size_needed += (sizeof (pci_routing_table) - 4);
/*
* Was a String type found?
*/
if (TRUE == name_found) {
if (ACPI_TYPE_STRING == (*sub_object_list)->common.type) {
/*
* The length String.Length field includes the
* terminating NULL
*/
temp_size_needed += (*sub_object_list)->string.length;
}
else {
temp_size_needed += acpi_ns_get_pathname_length (
(*sub_object_list)->reference.node);
}
}
else {
/*
* If no name was found, then this is a NULL, which is
* translated as a u32 zero.
*/
temp_size_needed += sizeof (u32);
}
/* Round up the size since each element must be aligned */
temp_size_needed = ROUND_UP_TO_64_bITS (temp_size_needed);
/*
* Point to the next acpi_operand_object
*/
top_object_list++;
}
/*
* Adding an extra element to the end of the list, essentially a NULL terminator
*/
*buffer_size_needed = temp_size_needed + sizeof (pci_routing_table);
return_ACPI_STATUS (AE_OK);
}
acpi_status
acpi_ut_get_simple_object_size (
acpi_operand_object *internal_object,
u32 *obj_length)
{
u32 length;
acpi_status status = AE_OK;
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 = 0;
return_ACPI_STATUS (AE_OK);
}
/* Start with the length of the Acpi object */
length = sizeof (acpi_object);
if (VALID_DESCRIPTOR_TYPE (internal_object, ACPI_DESC_TYPE_NAMED)) {
/* Object is a named object (reference), just return the length */
*obj_length = (u32) 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 += internal_object->string.length + 1;
break;
case ACPI_TYPE_BUFFER:
length += 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 INTERNAL_TYPE_REFERENCE:
/*
* The only type that should be here is internal opcode NAMEPATH_OP -- since
* this means an object reference
*/
if (internal_object->reference.opcode != AML_INT_NAMEPATH_OP) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Unsupported Reference opcode=%X in object %p\n",
internal_object->reference.opcode, internal_object));
status = AE_TYPE;
}
else {
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
*/
length += ROUND_UP_TO_NATIVE_WORD (acpi_ns_get_pathname_length (internal_object->reference.node));
}
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported type=%X in object %p\n",
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 = (u32) ROUND_UP_TO_NATIVE_WORD (length);
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);
/* Start with the length of the (external) Acpi object */
length = sizeof(union acpi_object);
/* A NULL object is allowed, can be a legal uninitialized package element */
if (!internal_object) {
/*
* Object is NULL, just return the length of union acpi_object
* (A NULL union acpi_object is an object of all zeroes.)
*/
*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length);
return_ACPI_STATUS(AE_OK);
}
/* A Namespace Node should never appear here */
if (ACPI_GET_DESCRIPTOR_TYPE(internal_object) == ACPI_DESC_TYPE_NAMED) {
/* A namespace node should never get here */
return_ACPI_STATUS(AE_AML_INTERNAL);
}
/*
* 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] 0x%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] 0x%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);
}