acpi_status
acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 * flags)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE(ut_execute_STA);
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__STA,
ACPI_BTYPE_INTEGER, &obj_desc);
if (ACPI_FAILURE(status)) {
if (AE_NOT_FOUND == status) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"_STA on %4.4s was not found, assuming device is present\n",
acpi_ut_get_node_name(device_node)));
*flags = ACPI_UINT32_MAX;
status = AE_OK;
}
return_ACPI_STATUS(status);
}
/* Extract the status flags */
*flags = (u32) obj_desc->integer.value;
/* On exit, we must delete the return object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ut_execute_UID (
struct acpi_namespace_node *device_node,
struct acpi_device_id *uid)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE ("ut_execute_UID");
status = acpi_ut_evaluate_object (device_node, METHOD_NAME__UID,
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &obj_desc);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) {
/* Convert the Numeric UID to string */
acpi_ex_unsigned_integer_to_string (obj_desc->integer.value, uid->value);
}
else {
/* Copy the String UID from the returned object */
acpi_ut_copy_id_string (uid->value, obj_desc->string.pointer,
sizeof (uid->value));
}
/* On exit, we must delete the return object */
acpi_ut_remove_reference (obj_desc);
return_ACPI_STATUS (status);
}
acpi_status
acpi_ut_evaluate_numeric_object(char *object_name,
struct acpi_namespace_node *device_node,
u64 *value)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE(ut_evaluate_numeric_object);
status = acpi_ut_evaluate_object(device_node, object_name,
ACPI_BTYPE_INTEGER, &obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the returned Integer */
*value = obj_desc->integer.value;
/* On exit, we must delete the return object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_execute_HID
*
* PARAMETERS: device_node - Node for the device
* return_id - Where the string HID is returned
*
* RETURN: Status
*
* DESCRIPTION: Executes the _HID control method that returns the hardware
* ID of the device. The HID is either an 32-bit encoded EISAID
* Integer or a String. A string is always returned. An EISAID
* is converted to a string.
*
* NOTE: Internal function, no parameter validation
*
******************************************************************************/
acpi_status
acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
struct acpi_pnp_device_id **return_id)
{
union acpi_operand_object *obj_desc;
struct acpi_pnp_device_id *hid;
u32 length;
acpi_status status;
ACPI_FUNCTION_TRACE(ut_execute_HID);
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__HID,
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
&obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the size of the String to be returned, includes null terminator */
if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
length = ACPI_EISAID_STRING_SIZE;
} else {
length = obj_desc->string.length + 1;
}
/* Allocate a buffer for the HID */
hid =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pnp_device_id) +
(acpi_size)length);
if (!hid) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Area for the string starts after PNP_DEVICE_ID struct */
hid->string =
ACPI_ADD_PTR(char, hid, sizeof(struct acpi_pnp_device_id));
/* Convert EISAID to a string or simply copy existing string */
if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
acpi_ex_eisa_id_to_string(hid->string, obj_desc->integer.value);
} else {
strcpy(hid->string, obj_desc->string.pointer);
}
hid->length = length;
*return_id = hid;
cleanup:
/* On exit, we must delete the return object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
struct acpica_device_id **return_id)
{
union acpi_operand_object *obj_desc;
struct acpica_device_id *uid;
u32 length;
acpi_status status;
ACPI_FUNCTION_TRACE(ut_execute_UID);
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__UID,
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
&obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the size of the String to be returned, includes null terminator */
if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
length = ACPI_MAX64_DECIMAL_DIGITS + 1;
} else {
length = obj_desc->string.length + 1;
}
/* Allocate a buffer for the UID */
uid =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpica_device_id) +
(acpi_size) length);
if (!uid) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Area for the string starts after DEVICE_ID struct */
uid->string = ACPI_ADD_PTR(char, uid, sizeof(struct acpica_device_id));
/* Convert an Integer to string, or just copy an existing string */
if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
acpi_ex_integer_to_string(uid->string, obj_desc->integer.value);
} else {
acpi_ut_copy_id_string(uid->string, obj_desc->string.pointer);
}
uid->length = length;
*return_id = uid;
cleanup:
/* On exit, we must delete the return object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ut_execute_SUB(struct acpi_namespace_node *device_node,
struct acpi_pnp_device_id **return_id)
{
union acpi_operand_object *obj_desc;
struct acpi_pnp_device_id *sub;
u32 length;
acpi_status status;
ACPI_FUNCTION_TRACE(ut_execute_SUB);
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__SUB,
ACPI_BTYPE_STRING, &obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the size of the String to be returned, includes null terminator */
length = obj_desc->string.length + 1;
/* Allocate a buffer for the SUB */
sub =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pnp_device_id) +
(acpi_size) length);
if (!sub) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Area for the string starts after PNP_DEVICE_ID struct */
sub->string =
ACPI_ADD_PTR(char, sub, sizeof(struct acpi_pnp_device_id));
/* Simply copy existing string */
ACPI_STRCPY(sub->string, obj_desc->string.pointer);
sub->length = length;
*return_id = sub;
cleanup:
/* On exit, we must delete the return object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ut_execute_sxds (
struct acpi_namespace_node *device_node,
u8 *highest)
{
union acpi_operand_object *obj_desc;
acpi_status status;
u32 i;
ACPI_FUNCTION_TRACE ("ut_execute_Sxds");
for (i = 0; i < 4; i++) {
highest[i] = 0xFF;
status = acpi_ut_evaluate_object (device_node,
(char *) acpi_gbl_highest_dstate_names[i],
ACPI_BTYPE_INTEGER, &obj_desc);
if (ACPI_FAILURE (status)) {
if (status != AE_NOT_FOUND) {
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"%s on Device %4.4s, %s\n",
(char *) acpi_gbl_highest_dstate_names[i],
acpi_ut_get_node_name (device_node),
acpi_format_exception (status)));
return_ACPI_STATUS (status);
}
}
else {
/* Extract the Dstate value */
highest[i] = (u8) obj_desc->integer.value;
/* Delete the return object */
acpi_ut_remove_reference (obj_desc);
}
}
return_ACPI_STATUS (AE_OK);
}
static acpi_status
acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
u32 level, void *info, void **return_value)
{
struct acpi_gpe_walk_info *gpe_info = (void *)info;
struct acpi_namespace_node *gpe_device;
struct acpi_gpe_block_info *gpe_block;
struct acpi_namespace_node *target_gpe_device;
struct acpi_gpe_event_info *gpe_event_info;
union acpi_operand_object *pkg_desc;
union acpi_operand_object *obj_desc;
u32 gpe_number;
acpi_status status;
ACPI_FUNCTION_TRACE(ev_match_prw_and_gpe);
/* Check for a _PRW method under this device */
status = acpi_ut_evaluate_object(obj_handle, METHOD_NAME__PRW,
ACPI_BTYPE_PACKAGE, &pkg_desc);
if (ACPI_FAILURE(status)) {
/* Ignore all errors from _PRW, we don't want to abort the subsystem */
return_ACPI_STATUS(AE_OK);
}
/* The returned _PRW package must have at least two elements */
if (pkg_desc->package.count < 2) {
goto cleanup;
}
/* Extract pointers from the input context */
gpe_device = gpe_info->gpe_device;
gpe_block = gpe_info->gpe_block;
/*
* The _PRW object must return a package, we are only interested
* in the first element
*/
obj_desc = pkg_desc->package.elements[0];
if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
/* Use FADT-defined GPE device (from definition of _PRW) */
target_gpe_device = acpi_gbl_fadt_gpe_device;
/* Integer is the GPE number in the FADT described GPE blocks */
gpe_number = (u32) obj_desc->integer.value;
} else if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) {
/* Package contains a GPE reference and GPE number within a GPE block */
if ((obj_desc->package.count < 2) ||
(ACPI_GET_OBJECT_TYPE(obj_desc->package.elements[0]) !=
ACPI_TYPE_LOCAL_REFERENCE)
|| (ACPI_GET_OBJECT_TYPE(obj_desc->package.elements[1]) !=
ACPI_TYPE_INTEGER)) {
goto cleanup;
}
/* Get GPE block reference and decode */
target_gpe_device =
obj_desc->package.elements[0]->reference.node;
gpe_number = (u32) obj_desc->package.elements[1]->integer.value;
} else {
/* Unknown type, just ignore it */
goto cleanup;
}
/*
* Is this GPE within this block?
*
* TRUE iff these conditions are true:
* 1) The GPE devices match.
* 2) The GPE index(number) is within the range of the Gpe Block
* associated with the GPE device.
*/
if ((gpe_device == target_gpe_device) &&
(gpe_number >= gpe_block->block_base_number) &&
(gpe_number <
gpe_block->block_base_number + (gpe_block->register_count * 8))) {
gpe_event_info =
&gpe_block->event_info[gpe_number -
gpe_block->block_base_number];
/* Mark GPE for WAKE-ONLY but WAKE_DISABLED */
gpe_event_info->flags &=
~(ACPI_GPE_WAKE_ENABLED | ACPI_GPE_RUN_ENABLED);
status =
acpi_ev_set_gpe_type(gpe_event_info, ACPI_GPE_TYPE_WAKE);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
status =
acpi_ev_update_gpe_enable_masks(gpe_event_info,
ACPI_GPE_DISABLE);
}
cleanup:
acpi_ut_remove_reference(pkg_desc);
return_ACPI_STATUS(AE_OK);
}
acpi_status
acpi_ut_execute_CID(struct acpi_namespace_node *device_node,
struct acpica_device_id_list **return_cid_list)
{
union acpi_operand_object **cid_objects;
union acpi_operand_object *obj_desc;
struct acpica_device_id_list *cid_list;
char *next_id_string;
u32 string_area_size;
u32 length;
u32 cid_list_size;
acpi_status status;
u32 count;
u32 i;
ACPI_FUNCTION_TRACE(ut_execute_CID);
/* Evaluate the _CID method for this device */
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__CID,
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING
| ACPI_BTYPE_PACKAGE, &obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Get the count and size of the returned _CIDs. _CID can return either
* a Package of Integers/Strings or a single Integer or String.
* Note: This section also validates that all CID elements are of the
* correct type (Integer or String).
*/
if (obj_desc->common.type == ACPI_TYPE_PACKAGE) {
count = obj_desc->package.count;
cid_objects = obj_desc->package.elements;
} else { /* Single Integer or String CID */
count = 1;
cid_objects = &obj_desc;
}
string_area_size = 0;
for (i = 0; i < count; i++) {
/* String lengths include null terminator */
switch (cid_objects[i]->common.type) {
case ACPI_TYPE_INTEGER:
string_area_size += ACPI_EISAID_STRING_SIZE;
break;
case ACPI_TYPE_STRING:
string_area_size += cid_objects[i]->string.length + 1;
break;
default:
status = AE_TYPE;
goto cleanup;
}
}
/*
* Now that we know the length of the CIDs, allocate return buffer:
* 1) Size of the base structure +
* 2) Size of the CID DEVICE_ID array +
* 3) Size of the actual CID strings
*/
cid_list_size = sizeof(struct acpica_device_id_list) +
((count - 1) * sizeof(struct acpica_device_id)) + string_area_size;
cid_list = ACPI_ALLOCATE_ZEROED(cid_list_size);
if (!cid_list) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Area for CID strings starts after the CID DEVICE_ID array */
next_id_string = ACPI_CAST_PTR(char, cid_list->ids) +
((acpi_size) count * sizeof(struct acpica_device_id));
/* Copy/convert the CIDs to the return buffer */
for (i = 0; i < count; i++) {
if (cid_objects[i]->common.type == ACPI_TYPE_INTEGER) {
/* Convert the Integer (EISAID) CID to a string */
acpi_ex_eisa_id_to_string(next_id_string,
cid_objects[i]->integer.
value);
length = ACPI_EISAID_STRING_SIZE;
} else { /* ACPI_TYPE_STRING */
/* Copy the String CID from the returned object */
acpi_ut_copy_id_string(next_id_string,
cid_objects[i]->string.pointer);
length = cid_objects[i]->string.length + 1;
}
cid_list->ids[i].string = next_id_string;
cid_list->ids[i].length = length;
next_id_string += length;
}
/* Finish the CID list */
cid_list->count = count;
cid_list->list_size = cid_list_size;
*return_cid_list = cid_list;
cleanup:
/* On exit, we must delete the _CID return object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ut_execute_CLS(struct acpi_namespace_node *device_node,
struct acpi_pnp_device_id **return_id)
{
union acpi_operand_object *obj_desc;
union acpi_operand_object **cls_objects;
u32 count;
struct acpi_pnp_device_id *cls;
u32 length;
acpi_status status;
u8 class_code[3] = { 0, 0, 0 };
ACPI_FUNCTION_TRACE(ut_execute_CLS);
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__CLS,
ACPI_BTYPE_PACKAGE, &obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the size of the String to be returned, includes null terminator */
length = ACPI_PCICLS_STRING_SIZE;
cls_objects = obj_desc->package.elements;
count = obj_desc->package.count;
if (obj_desc->common.type == ACPI_TYPE_PACKAGE) {
if (count > 0
&& cls_objects[0]->common.type == ACPI_TYPE_INTEGER) {
class_code[0] = (u8)cls_objects[0]->integer.value;
}
if (count > 1
&& cls_objects[1]->common.type == ACPI_TYPE_INTEGER) {
class_code[1] = (u8)cls_objects[1]->integer.value;
}
if (count > 2
&& cls_objects[2]->common.type == ACPI_TYPE_INTEGER) {
class_code[2] = (u8)cls_objects[2]->integer.value;
}
}
/* Allocate a buffer for the CLS */
cls =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pnp_device_id) +
(acpi_size)length);
if (!cls) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Area for the string starts after PNP_DEVICE_ID struct */
cls->string =
ACPI_ADD_PTR(char, cls, sizeof(struct acpi_pnp_device_id));
/* Simply copy existing string */
acpi_ex_pci_cls_to_string(cls->string, class_code);
cls->length = length;
*return_id = cls;
cleanup:
/* On exit, we must delete the return object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ut_execute_CID (
struct acpi_namespace_node *device_node,
struct acpi_compatible_id_list **return_cid_list)
{
union acpi_operand_object *obj_desc;
acpi_status status;
u32 count;
u32 size;
struct acpi_compatible_id_list *cid_list;
acpi_native_uint i;
ACPI_FUNCTION_TRACE ("ut_execute_CID");
/* Evaluate the _CID method for this device */
status = acpi_ut_evaluate_object (device_node, METHOD_NAME__CID,
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_PACKAGE,
&obj_desc);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Get the number of _CIDs returned */
count = 1;
if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_PACKAGE) {
count = obj_desc->package.count;
}
/* Allocate a worst-case buffer for the _CIDs */
size = (((count - 1) * sizeof (struct acpi_compatible_id)) +
sizeof (struct acpi_compatible_id_list));
cid_list = ACPI_MEM_CALLOCATE ((acpi_size) size);
if (!cid_list) {
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Init CID list */
cid_list->count = count;
cid_list->size = size;
/*
* A _CID can return either a single compatible ID or a package of compatible
* IDs. Each compatible ID can be one of the following:
* -- Number (32 bit compressed EISA ID) or
* -- String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss").
*/
/* The _CID object can be either a single CID or a package (list) of CIDs */
if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_PACKAGE) {
/* Translate each package element */
for (i = 0; i < count; i++) {
status = acpi_ut_translate_one_cid (obj_desc->package.elements[i],
&cid_list->id[i]);
if (ACPI_FAILURE (status)) {
break;
}
}
}
else {
/* Only one CID, translate to a string */
status = acpi_ut_translate_one_cid (obj_desc, cid_list->id);
}
/* Cleanup on error */
if (ACPI_FAILURE (status)) {
ACPI_MEM_FREE (cid_list);
}
else {
*return_cid_list = cid_list;
}
/* On exit, we must delete the _CID return object */
acpi_ut_remove_reference (obj_desc);
return_ACPI_STATUS (status);
}
