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path: root/drivers/acpi/acpica/utids.c
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Diffstat (limited to 'drivers/acpi/acpica/utids.c')
-rw-r--r--drivers/acpi/acpica/utids.c111
1 files changed, 92 insertions, 19 deletions
diff --git a/drivers/acpi/acpica/utids.c b/drivers/acpi/acpica/utids.c
index d2906328535..4b12880e5b1 100644
--- a/drivers/acpi/acpica/utids.c
+++ b/drivers/acpi/acpica/utids.c
@@ -1,11 +1,11 @@
/******************************************************************************
*
- * Module Name: utids - support for device IDs - HID, UID, CID
+ * Module Name: utids - support for device Ids - HID, UID, CID
*
*****************************************************************************/
/*
- * Copyright (C) 2000 - 2010, Intel Corp.
+ * Copyright (C) 2000 - 2014, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -67,10 +67,10 @@ ACPI_MODULE_NAME("utids")
******************************************************************************/
acpi_status
acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
- struct acpica_device_id **return_id)
+ struct acpi_pnp_device_id **return_id)
{
union acpi_operand_object *obj_desc;
- struct acpica_device_id *hid;
+ struct acpi_pnp_device_id *hid;
u32 length;
acpi_status status;
@@ -94,16 +94,17 @@ acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
/* Allocate a buffer for the HID */
hid =
- ACPI_ALLOCATE_ZEROED(sizeof(struct acpica_device_id) +
+ 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 DEVICE_ID struct */
+ /* Area for the string starts after PNP_DEVICE_ID struct */
- hid->string = ACPI_ADD_PTR(char, hid, sizeof(struct acpica_device_id));
+ hid->string =
+ ACPI_ADD_PTR(char, hid, sizeof(struct acpi_pnp_device_id));
/* Convert EISAID to a string or simply copy existing string */
@@ -126,6 +127,73 @@ cleanup:
/*******************************************************************************
*
+ * FUNCTION: acpi_ut_execute_SUB
+ *
+ * PARAMETERS: device_node - Node for the device
+ * return_id - Where the _SUB is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Executes the _SUB control method that returns the subsystem
+ * ID of the device. The _SUB value is always a string containing
+ * either a valid PNP or ACPI ID.
+ *
+ * NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+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);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ut_execute_UID
*
* PARAMETERS: device_node - Node for the device
@@ -144,10 +212,10 @@ cleanup:
acpi_status
acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
- struct acpica_device_id **return_id)
+ struct acpi_pnp_device_id **return_id)
{
union acpi_operand_object *obj_desc;
- struct acpica_device_id *uid;
+ struct acpi_pnp_device_id *uid;
u32 length;
acpi_status status;
@@ -171,16 +239,17 @@ acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
/* Allocate a buffer for the UID */
uid =
- ACPI_ALLOCATE_ZEROED(sizeof(struct acpica_device_id) +
+ ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pnp_device_id) +
(acpi_size) length);
if (!uid) {
status = AE_NO_MEMORY;
goto cleanup;
}
- /* Area for the string starts after DEVICE_ID struct */
+ /* Area for the string starts after PNP_DEVICE_ID struct */
- uid->string = ACPI_ADD_PTR(char, uid, sizeof(struct acpica_device_id));
+ uid->string =
+ ACPI_ADD_PTR(char, uid, sizeof(struct acpi_pnp_device_id));
/* Convert an Integer to string, or just copy an existing string */
@@ -226,11 +295,11 @@ cleanup:
acpi_status
acpi_ut_execute_CID(struct acpi_namespace_node *device_node,
- struct acpica_device_id_list **return_cid_list)
+ struct acpi_pnp_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;
+ struct acpi_pnp_device_id_list *cid_list;
char *next_id_string;
u32 string_area_size;
u32 length;
@@ -272,14 +341,17 @@ acpi_ut_execute_CID(struct acpi_namespace_node *device_node,
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;
}
@@ -288,11 +360,12 @@ acpi_ut_execute_CID(struct acpi_namespace_node *device_node,
/*
* 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 +
+ * 2) Size of the CID PNP_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_size = sizeof(struct acpi_pnp_device_id_list) +
+ ((count - 1) * sizeof(struct acpi_pnp_device_id)) +
+ string_area_size;
cid_list = ACPI_ALLOCATE_ZEROED(cid_list_size);
if (!cid_list) {
@@ -300,10 +373,10 @@ acpi_ut_execute_CID(struct acpi_namespace_node *device_node,
goto cleanup;
}
- /* Area for CID strings starts after the CID DEVICE_ID array */
+ /* Area for CID strings starts after the CID PNP_DEVICE_ID array */
next_id_string = ACPI_CAST_PTR(char, cid_list->ids) +
- ((acpi_size) count * sizeof(struct acpica_device_id));
+ ((acpi_size) count * sizeof(struct acpi_pnp_device_id));
/* Copy/convert the CIDs to the return buffer */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 01:42:38 +0000