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ACPICA: Major update for acpi_get_object_info external interface

Browse source 
Completed a major update for the acpi_get_object_info external interface.
Changes include:
 - Support for variable, unlimited length HID, UID, and CID strings
 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.)
 - Call the _SxW power methods on behalf of a device object
 - Determine if a device is a PCI root bridge
 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
These changes will require an update to all callers of this interface.
See the ACPICA Programmer Reference for details.

Also, update all invocations of acpi_get_object_info interface

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2009-06-29 13:39:29 +08:00 committed by Len Brown
parent 9c61b34cf7
commit 15b8dd53f5
28 changed files with 906 additions and 635 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
arch/ia64/hp/common/sba_iommu.c
View file

@ -2026,24 +2026,21 @@ acpi_sba_ioc_add(struct acpi_device *device)
struct ioc *ioc;
acpi_status status;
u64 hpa, length;
struct acpi_buffer buffer;
struct acpi_device_info *dev_info;
status = hp_acpi_csr_space(device->handle, &hpa, &length);
if (ACPI_FAILURE(status))
return 1;
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_get_object_info(device->handle, &buffer);
status = acpi_get_object_info(device->handle, &dev_info);
if (ACPI_FAILURE(status))
return 1;
dev_info = buffer.pointer;
/*
* For HWP0001, only SBA appears in ACPI namespace. It encloses the PCI
* root bridges, and its CSR space includes the IOC function.
*/
if (strncmp("HWP0001", dev_info->hardware_id.value, 7) == 0) {
if (strncmp("HWP0001", dev_info->hardware_id.string, 7) == 0) {
hpa += ZX1_IOC_OFFSET;
/* zx1 based systems default to kernel page size iommu pages */
if (!iovp_shift)

11
drivers/acpi/acpi_memhotplug.c
View file

@ -481,26 +481,23 @@ static acpi_status is_memory_device(acpi_handle handle)
{
char *hardware_id;
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_device_info *info;
status = acpi_get_object_info(handle, &buffer);
status = acpi_get_object_info(handle, &info);
if (ACPI_FAILURE(status))
return status;
info = buffer.pointer;
if (!(info->valid & ACPI_VALID_HID)) {
kfree(buffer.pointer);
kfree(info);
return AE_ERROR;
}
hardware_id = info->hardware_id.value;
hardware_id = info->hardware_id.string;
if ((hardware_id == NULL) ||
(strcmp(hardware_id, ACPI_MEMORY_DEVICE_HID)))
status = AE_ERROR;
kfree(buffer.pointer);
kfree(info);
return status;
}

2
drivers/acpi/acpica/Makefile
View file

@ -44,4 +44,4 @@ acpi-y += tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o
acpi-y += utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \
utcopy.o utdelete.o utglobal.o utmath.o utobject.o \
utstate.o utmutex.o utobject.o utresrc.o utlock.o
utstate.o utmutex.o utobject.o utresrc.o utlock.o utids.o

5
drivers/acpi/acpica/acconfig.h
View file

@ -203,6 +203,11 @@
#define ACPI_SMBUS_BUFFER_SIZE 34
/* _sx_d and _sx_w control methods */
#define ACPI_NUM_sx_d_METHODS 4
#define ACPI_NUM_sx_w_METHODS 5
/******************************************************************************
*
* ACPI AML Debugger

3
drivers/acpi/acpica/acglobal.h
View file

@ -265,7 +265,8 @@ ACPI_EXTERN u8 acpi_gbl_osi_data;
extern u8 acpi_gbl_shutdown;
extern u32 acpi_gbl_startup_flags;
extern const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT];
extern const char *acpi_gbl_highest_dstate_names[4];
extern const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS];
extern const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS];
extern const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES];
extern const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS];

4
drivers/acpi/acpica/acinterp.h
View file

@ -461,9 +461,9 @@ void acpi_ex_acquire_global_lock(u32 rule);
void acpi_ex_release_global_lock(u32 rule);
void acpi_ex_eisa_id_to_string(u32 numeric_id, char *out_string);
void acpi_ex_eisa_id_to_string(char *dest, acpi_integer compressed_id);
void acpi_ex_unsigned_integer_to_string(acpi_integer value, char *out_string);
void acpi_ex_integer_to_string(char *dest, acpi_integer value);
/*
* exregion - default op_region handlers

30
drivers/acpi/acpica/acutils.h
View file

@ -324,26 +324,30 @@ acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
acpi_status
acpi_ut_evaluate_numeric_object(char *object_name,
struct acpi_namespace_node *device_node,
acpi_integer * address);
acpi_integer *value);
acpi_status
acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 *status_flags);
acpi_status
acpi_ut_execute_power_methods(struct acpi_namespace_node *device_node,
const char **method_names,
u8 method_count, u8 *out_values);
/*
* utids - device ID support
*/
acpi_status
acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
struct acpica_device_id *hid);
acpi_status
acpi_ut_execute_CID(struct acpi_namespace_node *device_node,
struct acpi_compatible_id_list **return_cid_list);
acpi_status
acpi_ut_execute_STA(struct acpi_namespace_node *device_node,
u32 * status_flags);
struct acpica_device_id **return_id);
acpi_status
acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
struct acpica_device_id *uid);
struct acpica_device_id **return_id);
acpi_status
acpi_ut_execute_sxds(struct acpi_namespace_node *device_node, u8 * highest);
acpi_ut_execute_CID(struct acpi_namespace_node *device_node,
struct acpica_device_id_list **return_cid_list);
/*
* utlock - reader/writer locks
@ -445,6 +449,8 @@ acpi_ut_short_divide(acpi_integer in_dividend,
*/
const char *acpi_ut_validate_exception(acpi_status status);
u8 acpi_ut_is_pci_root_bridge(char *id);
u8 acpi_ut_is_aml_table(struct acpi_table_header *table);
acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id);

45
drivers/acpi/acpica/evrgnini.c
View file

@ -50,8 +50,6 @@
ACPI_MODULE_NAME("evrgnini")
/* Local prototypes */
static u8 acpi_ev_match_pci_root_bridge(char *id);
static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node);
/*******************************************************************************
@ -330,37 +328,6 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_match_pci_root_bridge
*
* PARAMETERS: Id - The HID/CID in string format
*
* RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
*
* DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
*
******************************************************************************/
static u8 acpi_ev_match_pci_root_bridge(char *id)
{
/*
* Check if this is a PCI root.
* ACPI 3.0+: check for a PCI Express root also.
*/
if (!(ACPI_STRNCMP(id,
PCI_ROOT_HID_STRING,
sizeof(PCI_ROOT_HID_STRING))) ||
!(ACPI_STRNCMP(id,
PCI_EXPRESS_ROOT_HID_STRING,
sizeof(PCI_EXPRESS_ROOT_HID_STRING)))) {
return (TRUE);
}
return (FALSE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_is_pci_root_bridge
@ -377,9 +344,10 @@ static u8 acpi_ev_match_pci_root_bridge(char *id)
static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
{
acpi_status status;
struct acpica_device_id hid;
struct acpi_compatible_id_list *cid;
struct acpica_device_id *hid;
struct acpica_device_id_list *cid;
u32 i;
u8 match;
/* Get the _HID and check for a PCI Root Bridge */
@ -388,7 +356,10 @@ static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
return (FALSE);
}
if (acpi_ev_match_pci_root_bridge(hid.value)) {
match = acpi_ut_is_pci_root_bridge(hid->string);
ACPI_FREE(hid);
if (match) {
return (TRUE);
}
@ -402,7 +373,7 @@ static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
/* Check all _CIDs in the returned list */
for (i = 0; i < cid->count; i++) {
if (acpi_ev_match_pci_root_bridge(cid->id[i].value)) {
if (acpi_ut_is_pci_root_bridge(cid->ids[i].string)) {
ACPI_FREE(cid);
return (TRUE);
}

53
drivers/acpi/acpica/exutils.c
View file

@ -358,50 +358,67 @@ static u32 acpi_ex_digits_needed(acpi_integer value, u32 base)
*
* FUNCTION: acpi_ex_eisa_id_to_string
*
* PARAMETERS: numeric_id - EISA ID to be converted
* PARAMETERS: compressed_id - EISAID to be converted
* out_string - Where to put the converted string (8 bytes)
*
* RETURN: None
*
* DESCRIPTION: Convert a numeric EISA ID to string representation
* DESCRIPTION: Convert a numeric EISAID to string representation. Return
* buffer must be large enough to hold the string. The string
* returned is always exactly of length ACPI_EISAID_STRING_SIZE
* (includes null terminator). The EISAID is always 32 bits.
*
******************************************************************************/
void acpi_ex_eisa_id_to_string(u32 numeric_id, char *out_string)
void acpi_ex_eisa_id_to_string(char *out_string, acpi_integer compressed_id)
{
u32 eisa_id;
u32 swapped_id;
ACPI_FUNCTION_ENTRY();
/* The EISAID should be a 32-bit integer */
if (compressed_id > ACPI_UINT32_MAX) {
ACPI_WARNING((AE_INFO,
"Expected EISAID is larger than 32 bits: 0x%8.8X%8.8X, truncating",
ACPI_FORMAT_UINT64(compressed_id)));
}
/* Swap ID to big-endian to get contiguous bits */
eisa_id = acpi_ut_dword_byte_swap(numeric_id);
swapped_id = acpi_ut_dword_byte_swap((u32)compressed_id);
out_string[0] = (char)('@' + (((unsigned long)eisa_id >> 26) & 0x1f));
out_string[1] = (char)('@' + ((eisa_id >> 21) & 0x1f));
out_string[2] = (char)('@' + ((eisa_id >> 16) & 0x1f));
out_string[3] = acpi_ut_hex_to_ascii_char((acpi_integer) eisa_id, 12);
out_string[4] = acpi_ut_hex_to_ascii_char((acpi_integer) eisa_id, 8);
out_string[5] = acpi_ut_hex_to_ascii_char((acpi_integer) eisa_id, 4);
out_string[6] = acpi_ut_hex_to_ascii_char((acpi_integer) eisa_id, 0);
/* First 3 bytes are uppercase letters. Next 4 bytes are hexadecimal */
out_string[0] =
(char)(0x40 + (((unsigned long)swapped_id >> 26) & 0x1F));
out_string[1] = (char)(0x40 + ((swapped_id >> 21) & 0x1F));
out_string[2] = (char)(0x40 + ((swapped_id >> 16) & 0x1F));
out_string[3] = acpi_ut_hex_to_ascii_char((acpi_integer)swapped_id, 12);
out_string[4] = acpi_ut_hex_to_ascii_char((acpi_integer)swapped_id, 8);
out_string[5] = acpi_ut_hex_to_ascii_char((acpi_integer)swapped_id, 4);
out_string[6] = acpi_ut_hex_to_ascii_char((acpi_integer)swapped_id, 0);
out_string[7] = 0;
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_unsigned_integer_to_string
* FUNCTION: acpi_ex_integer_to_string
*
* PARAMETERS: Value - Value to be converted
* out_string - Where to put the converted string (8 bytes)
* PARAMETERS: out_string - Where to put the converted string. At least
* 21 bytes are needed to hold the largest
* possible 64-bit integer.
* Value - Value to be converted
*
* RETURN: None, string
*
* DESCRIPTION: Convert a number to string representation. Assumes string
* buffer is large enough to hold the string.
* DESCRIPTION: Convert a 64-bit integer to decimal string representation.
* Assumes string buffer is large enough to hold the string. The
* largest string is (ACPI_MAX64_DECIMAL_DIGITS + 1).
*
******************************************************************************/
void acpi_ex_unsigned_integer_to_string(acpi_integer value, char *out_string)
void acpi_ex_integer_to_string(char *out_string, acpi_integer value)
{
u32 count;
u32 digits_needed;

7
drivers/acpi/acpica/nsdumpdv.c
View file

@ -70,7 +70,6 @@ static acpi_status
acpi_ns_dump_one_device(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
struct acpi_buffer buffer;
struct acpi_device_info *info;
acpi_status status;
u32 i;
@ -80,17 +79,15 @@ acpi_ns_dump_one_device(acpi_handle obj_handle,
status =
acpi_ns_dump_one_object(obj_handle, level, context, return_value);
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_get_object_info(obj_handle, &buffer);
status = acpi_get_object_info(obj_handle, &info);
if (ACPI_SUCCESS(status)) {
info = buffer.pointer;
for (i = 0; i < level; i++) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_TABLES, " "));
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_TABLES,
" HID: %s, ADR: %8.8X%8.8X, Status: %X\n",
info->hardware_id.value,
info->hardware_id.string,
ACPI_FORMAT_UINT64(info->address),
info->current_status));
ACPI_FREE(info);

23
drivers/acpi/acpica/nsxfeval.c
View file

@ -535,10 +535,11 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
acpi_status status;
struct acpi_namespace_node *node;
u32 flags;
struct acpica_device_id hid;
struct acpi_compatible_id_list *cid;
struct acpica_device_id *hid;
struct acpica_device_id_list *cid;
u32 i;
int found;
u8 found;
int no_match;
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
@ -582,10 +583,14 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
return (AE_CTRL_DEPTH);
}
if (ACPI_STRNCMP(hid.value, info->hid, sizeof(hid.value)) != 0) {
/* Get the list of Compatible IDs */
no_match = ACPI_STRCMP(hid->string, info->hid);
ACPI_FREE(hid);
if (no_match) {
/*
* HID does not match, attempt match within the
* list of Compatible IDs (CIDs)
*/
status = acpi_ut_execute_CID(node, &cid);
if (status == AE_NOT_FOUND) {
return (AE_OK);
@ -597,10 +602,8 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
found = 0;
for (i = 0; i < cid->count; i++) {
if (ACPI_STRNCMP(cid->id[i].value, info->hid,
sizeof(struct
acpi_compatible_id)) ==
0) {
if (ACPI_STRCMP(cid->ids[i].string, info->hid)
== 0) {
found = 1;
break;
}

237
drivers/acpi/acpica/nsxfname.c
View file

@ -51,6 +51,11 @@
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsxfname")
/* Local prototypes */
static char *acpi_ns_copy_device_id(struct acpica_device_id *dest,
struct acpica_device_id *source,
char *string_area);
/******************************************************************************
*
* FUNCTION: acpi_get_handle
@ -68,6 +73,7 @@ ACPI_MODULE_NAME("nsxfname")
* namespace handle.
*
******************************************************************************/
acpi_status
acpi_get_handle(acpi_handle parent,
acpi_string pathname, acpi_handle * ret_handle)
@ -208,12 +214,40 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
ACPI_EXPORT_SYMBOL(acpi_get_name)
/******************************************************************************
*
* FUNCTION: acpi_ns_copy_device_id
*
* PARAMETERS: Dest - Pointer to the destination DEVICE_ID
* Source - Pointer to the source DEVICE_ID
* string_area - Pointer to where to copy the dest string
*
* RETURN: Pointer to the next string area
*
* DESCRIPTION: Copy a single DEVICE_ID, including the string data.
*
******************************************************************************/
static char *acpi_ns_copy_device_id(struct acpica_device_id *dest,
struct acpica_device_id *source,
char *string_area)
{
/* Create the destination DEVICE_ID */
dest->string = string_area;
dest->length = source->length;
/* Copy actual string and return a pointer to the next string area */
ACPI_MEMCPY(string_area, source->string, source->length);
return (string_area + source->length);
}
/******************************************************************************
*
* FUNCTION: acpi_get_object_info
*
* PARAMETERS: Handle - Object Handle
* Buffer - Where the info is returned
* PARAMETERS: Handle - Object Handle
* return_buffer - Where the info is returned
*
* RETURN: Status
*
@ -221,33 +255,37 @@ ACPI_EXPORT_SYMBOL(acpi_get_name)
* namespace node and possibly by running several standard
* control methods (Such as in the case of a device.)
*
* For Device and Processor objects, run the Device _HID, _UID, _CID, _STA,
* _ADR, _sx_w, and _sx_d methods.
*
* Note: Allocates the return buffer, must be freed by the caller.
*
******************************************************************************/
acpi_status
acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
acpi_get_object_info(acpi_handle handle,
struct acpi_device_info **return_buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
struct acpi_device_info *info;
struct acpi_device_info *return_info;
struct acpi_compatible_id_list *cid_list = NULL;
acpi_size size;
struct acpica_device_id_list *cid_list = NULL;
struct acpica_device_id *hid = NULL;
struct acpica_device_id *uid = NULL;
char *next_id_string;
acpi_object_type type;
acpi_name name;
u8 param_count = 0;
u8 valid = 0;
u32 info_size;
u32 i;
acpi_status status;
/* Parameter validation */
if (!handle || !buffer) {
if (!handle || !return_buffer) {
return (AE_BAD_PARAMETER);
}
status = acpi_ut_validate_buffer(buffer);
if (ACPI_FAILURE(status)) {
return (status);
}
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_device_info));
if (!info) {
return (AE_NO_MEMORY);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
goto cleanup;
@ -256,66 +294,91 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
node = acpi_ns_map_handle_to_node(handle);
if (!node) {
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
status = AE_BAD_PARAMETER;
goto cleanup;
return (AE_BAD_PARAMETER);
}
/* Init return structure */
/* Get the namespace node data while the namespace is locked */
size = sizeof(struct acpi_device_info);
info->type = node->type;
info->name = node->name.integer;
info->valid = 0;
info_size = sizeof(struct acpi_device_info);
type = node->type;
name = node->name.integer;
if (node->type == ACPI_TYPE_METHOD) {
info->param_count = node->object->method.param_count;
param_count = node->object->method.param_count;
}
status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
goto cleanup;
return (status);
}
/* If not a device, we are all done */
if (info->type == ACPI_TYPE_DEVICE) {
if ((type == ACPI_TYPE_DEVICE) || (type == ACPI_TYPE_PROCESSOR)) {
/*
* Get extra info for ACPI Devices objects only:
* Run the Device _HID, _UID, _CID, _STA, _ADR and _sx_d methods.
* Get extra info for ACPI Device/Processor objects only:
* Run the Device _HID, _UID, and _CID methods.
*
* Note: none of these methods are required, so they may or may
* not be present for this device. The Info->Valid bitfield is used
* to indicate which methods were found and ran successfully.
* not be present for this device. The Info->Valid bitfield is used
* to indicate which methods were found and run successfully.
*/
/* Execute the Device._HID method */
status = acpi_ut_execute_HID(node, &info->hardware_id);
status = acpi_ut_execute_HID(node, &hid);
if (ACPI_SUCCESS(status)) {
info->valid |= ACPI_VALID_HID;
info_size += hid->length;
valid |= ACPI_VALID_HID;
}
/* Execute the Device._UID method */
status = acpi_ut_execute_UID(node, &info->unique_id);
status = acpi_ut_execute_UID(node, &uid);
if (ACPI_SUCCESS(status)) {
info->valid |= ACPI_VALID_UID;
info_size += uid->length;
valid |= ACPI_VALID_UID;
}
/* Execute the Device._CID method */
status = acpi_ut_execute_CID(node, &cid_list);
if (ACPI_SUCCESS(status)) {
size += cid_list->size;
info->valid |= ACPI_VALID_CID;
/* Add size of CID strings and CID pointer array */
info_size +=
(cid_list->list_size -
sizeof(struct acpica_device_id_list));
valid |= ACPI_VALID_CID;
}
}
/*
* Now that we have the variable-length data, we can allocate the
* return buffer
*/
info = ACPI_ALLOCATE_ZEROED(info_size);
if (!info) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Get the fixed-length data */
if ((type == ACPI_TYPE_DEVICE) || (type == ACPI_TYPE_PROCESSOR)) {
/*
* Get extra info for ACPI Device/Processor objects only:
* Run the _STA, _ADR and, sx_w, and _sx_d methods.
*
* Note: none of these methods are required, so they may or may
* not be present for this device. The Info->Valid bitfield is used
* to indicate which methods were found and run successfully.
*/
/* Execute the Device._STA method */
status = acpi_ut_execute_STA(node, &info->current_status);
if (ACPI_SUCCESS(status)) {
info->valid |= ACPI_VALID_STA;
valid |= ACPI_VALID_STA;
}
/* Execute the Device._ADR method */
@ -323,36 +386,100 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, node,
&info->address);
if (ACPI_SUCCESS(status)) {
info->valid |= ACPI_VALID_ADR;
valid |= ACPI_VALID_ADR;
}
/* Execute the Device._sx_w methods */
status = acpi_ut_execute_power_methods(node,
acpi_gbl_lowest_dstate_names,
ACPI_NUM_sx_w_METHODS,
info->lowest_dstates);
if (ACPI_SUCCESS(status)) {
valid |= ACPI_VALID_SXWS;
}
/* Execute the Device._sx_d methods */
status = acpi_ut_execute_sxds(node, info->highest_dstates);
status = acpi_ut_execute_power_methods(node,
acpi_gbl_highest_dstate_names,
ACPI_NUM_sx_d_METHODS,
info->highest_dstates);
if (ACPI_SUCCESS(status)) {
info->valid |= ACPI_VALID_SXDS;
valid |= ACPI_VALID_SXDS;
}
}
/* Validate/Allocate/Clear caller buffer */
/*
* Create a pointer to the string area of the return buffer.
* Point to the end of the base struct acpi_device_info structure.
*/
next_id_string = ACPI_CAST_PTR(char, info->compatible_id_list.ids);
if (cid_list) {
status = acpi_ut_initialize_buffer(buffer, size);
if (ACPI_FAILURE(status)) {
goto cleanup;
/* Point past the CID DEVICE_ID array */
next_id_string +=
((acpi_size) cid_list->count *
sizeof(struct acpica_device_id));
}
/* Populate the return buffer */
/*
* Copy the HID, UID, and CIDs to the return buffer. The variable-length
* strings are copied to the reserved area at the end of the buffer.
*
* For HID and CID, check if the ID is a PCI Root Bridge.
*/
if (hid) {
next_id_string = acpi_ns_copy_device_id(&info->hardware_id,
hid, next_id_string);
return_info = buffer->pointer;
ACPI_MEMCPY(return_info, info, sizeof(struct acpi_device_info));
if (acpi_ut_is_pci_root_bridge(hid->string)) {
info->flags |= ACPI_PCI_ROOT_BRIDGE;
}
}
if (uid) {
next_id_string = acpi_ns_copy_device_id(&info->unique_id,
uid, next_id_string);
}
if (cid_list) {
ACPI_MEMCPY(&return_info->compatibility_id, cid_list,
cid_list->size);
info->compatible_id_list.count = cid_list->count;
info->compatible_id_list.list_size = cid_list->list_size;
/* Copy each CID */
for (i = 0; i < cid_list->count; i++) {
next_id_string =
acpi_ns_copy_device_id(&info->compatible_id_list.
ids[i], &cid_list->ids[i],
next_id_string);
if (acpi_ut_is_pci_root_bridge(cid_list->ids[i].string)) {
info->flags |= ACPI_PCI_ROOT_BRIDGE;
}
}
}
/* Copy the fixed-length data */
info->info_size = info_size;
info->type = type;
info->name = name;
info->param_count = param_count;
info->valid = valid;
*return_buffer = info;
status = AE_OK;
cleanup:
ACPI_FREE(info);
if (hid) {
ACPI_FREE(hid);
}
if (uid) {
ACPI_FREE(uid);
}
if (cid_list) {
ACPI_FREE(cid_list);
}

375
drivers/acpi/acpica/uteval.c
View file

@ -44,19 +44,10 @@
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("uteval")
/* Local prototypes */
static void
acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length);
static acpi_status
acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
struct acpi_compatible_id *one_cid);
/*
* Strings supported by the _OSI predefined (internal) method.
*
@ -213,7 +204,7 @@ acpi_status acpi_osi_invalidate(char *interface)
* RETURN: Status
*
* DESCRIPTION: Evaluates a namespace object and verifies the type of the
* return object. Common code that simplifies accessing objects
* return object. Common code that simplifies accessing objects
* that have required return objects of fixed types.
*
* NOTE: Internal function, no parameter validation
@ -298,7 +289,7 @@ acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
if ((acpi_gbl_enable_interpreter_slack) && (!expected_return_btypes)) {
/*
* We received a return object, but one was not expected. This can
* 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.
*/
@ -340,12 +331,12 @@ acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
*
* PARAMETERS: object_name - Object name to be evaluated
* device_node - Node for the device
* Address - Where the value is returned
* Value - Where the value is returned
*
* RETURN: Status
*
* DESCRIPTION: Evaluates a numeric namespace object for a selected device
* and stores result in *Address.
* and stores result in *Value.
*
* NOTE: Internal function, no parameter validation
*
@ -354,7 +345,7 @@ acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
acpi_status
acpi_ut_evaluate_numeric_object(char *object_name,
struct acpi_namespace_node *device_node,
acpi_integer * address)
acpi_integer *value)
{
union acpi_operand_object *obj_desc;
acpi_status status;
@ -369,295 +360,7 @@ acpi_ut_evaluate_numeric_object(char *object_name,
/* Get the returned Integer */
*address = 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_copy_id_string
*
* PARAMETERS: Destination - Where to copy the string
* Source - Source string
* max_length - Length of the destination buffer
*
* RETURN: None
*
* DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods.
* Performs removal of a leading asterisk if present -- workaround
* for a known issue on a bunch of machines.
*
******************************************************************************/
static void
acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length)
{
/*
* Workaround for ID strings that have a leading asterisk. This construct
* is not allowed by the ACPI specification (ID strings must be
* alphanumeric), but enough existing machines have this embedded in their
* ID strings that the following code is useful.
*/
if (*source == '*') {
source++;
}
/* Do the actual copy */
ACPI_STRNCPY(destination, source, max_length);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_execute_HID
*
* PARAMETERS: device_node - Node for the device
* Hid - Where the HID is returned
*
* RETURN: Status
*
* DESCRIPTION: Executes the _HID control method that returns the hardware
* ID of the device.
*
* NOTE: Internal function, no parameter validation
*
******************************************************************************/
acpi_status
acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
struct acpica_device_id *hid)
{
union acpi_operand_object *obj_desc;
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);
}
if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
/* Convert the Numeric HID to string */
acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value,
hid->value);
} else {
/* Copy the String HID from the returned object */
acpi_ut_copy_id_string(hid->value, obj_desc->string.pointer,
sizeof(hid->value));
}
/* On exit, we must delete the return object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_translate_one_cid
*
* PARAMETERS: obj_desc - _CID object, must be integer or string
* one_cid - Where the CID string is returned
*
* RETURN: Status
*
* DESCRIPTION: Return a numeric or string _CID value as a string.
* (Compatible ID)
*
* NOTE: Assumes a maximum _CID string length of
* ACPI_MAX_CID_LENGTH.
*
******************************************************************************/
static acpi_status
acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
struct acpi_compatible_id *one_cid)
{
switch (obj_desc->common.type) {
case ACPI_TYPE_INTEGER:
/* Convert the Numeric CID to string */
acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value,
one_cid->value);
return (AE_OK);
case ACPI_TYPE_STRING:
if (obj_desc->string.length > ACPI_MAX_CID_LENGTH) {
return (AE_AML_STRING_LIMIT);
}
/* Copy the String CID from the returned object */
acpi_ut_copy_id_string(one_cid->value, obj_desc->string.pointer,
ACPI_MAX_CID_LENGTH);
return (AE_OK);
default:
return (AE_TYPE);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_execute_CID
*
* PARAMETERS: device_node - Node for the device
* return_cid_list - Where the CID list is returned
*
* RETURN: Status
*
* DESCRIPTION: Executes the _CID control method that returns one or more
* compatible hardware IDs for the device.
*
* NOTE: Internal function, no parameter validation
*
******************************************************************************/
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;
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 number of _CIDs returned */
count = 1;
if (obj_desc->common.type == 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_ALLOCATE_ZEROED((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:
* 1) Integer (32 bit compressed EISA ID) or
* 2) 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 (obj_desc->common.type == 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_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);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_execute_UID
*
* PARAMETERS: device_node - Node for the device
* Uid - Where the UID is returned
*
* RETURN: Status
*
* DESCRIPTION: Executes the _UID control method that returns the hardware
* ID of the device.
*
* NOTE: Internal function, no parameter validation
*
******************************************************************************/
acpi_status
acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
struct acpica_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 (obj_desc->common.type == 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));
}
*value = obj_desc->integer.value;
/* On exit, we must delete the return object */
@ -716,60 +419,64 @@ acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 * flags)
/*******************************************************************************
*
* FUNCTION: acpi_ut_execute_Sxds
* FUNCTION: acpi_ut_execute_power_methods
*
* PARAMETERS: device_node - Node for the device
* Flags - Where the status flags are returned
* method_names - Array of power method names
* method_count - Number of methods to execute
* out_values - Where the power method values are returned
*
* RETURN: Status
* RETURN: Status, out_values
*
* DESCRIPTION: Executes _STA for selected device and stores results in
* *Flags.
* DESCRIPTION: Executes the specified power methods for the device and returns
* the result(s).
*
* NOTE: Internal function, no parameter validation
*
******************************************************************************/
******************************************************************************/
acpi_status
acpi_ut_execute_sxds(struct acpi_namespace_node *device_node, u8 * highest)
acpi_ut_execute_power_methods(struct acpi_namespace_node *device_node,
const char **method_names,
u8 method_count, u8 *out_values)
{
union acpi_operand_object *obj_desc;
acpi_status status;
acpi_status final_status = AE_NOT_FOUND;
u32 i;
ACPI_FUNCTION_TRACE(ut_execute_sxds);
ACPI_FUNCTION_TRACE(ut_execute_power_methods);
for (i = 0; i < 4; i++) {
highest[i] = 0xFF;
for (i = 0; i < method_count; i++) {
/*
* Execute the power method (_sx_d or _sx_w). The only allowable
* return type is an Integer.
*/
status = acpi_ut_evaluate_object(device_node,
ACPI_CAST_PTR(char,
acpi_gbl_highest_dstate_names
[i]),
method_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",
ACPI_CAST_PTR(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;
if (ACPI_SUCCESS(status)) {
out_values[i] = (u8)obj_desc->integer.value;
/* Delete the return object */
acpi_ut_remove_reference(obj_desc);
final_status = AE_OK; /* At least one value is valid */
continue;
}
out_values[i] = ACPI_UINT8_MAX;
if (status == AE_NOT_FOUND) {
continue; /* Ignore if not found */
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Failed %s on Device %4.4s, %s\n",
ACPI_CAST_PTR(char, method_names[i]),
acpi_ut_get_node_name(device_node),
acpi_format_exception(status)));
}
return_ACPI_STATUS(AE_OK);
return_ACPI_STATUS(final_status);
}

10
drivers/acpi/acpica/utglobal.c
View file

@ -90,7 +90,15 @@ const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
"\\_S5_"
};
const char *acpi_gbl_highest_dstate_names[4] = {
const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS] = {
"_S0W",
"_S1W",
"_S2W",
"_S3W",
"_S4W"
};
const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS] = {
"_S1D",
"_S2D",
"_S3D",

382
drivers/acpi/acpica/utids.c Normal file
View file

@ -0,0 +1,382 @@
/******************************************************************************
*
* Module Name: utids - support for device IDs - HID, UID, CID
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2009, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utids")
/* Local prototypes */
static void acpi_ut_copy_id_string(char *destination, char *source);
/*******************************************************************************
*
* FUNCTION: acpi_ut_copy_id_string
*
* PARAMETERS: Destination - Where to copy the string
* Source - Source string
*
* RETURN: None
*
* DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods.
* Performs removal of a leading asterisk if present -- workaround
* for a known issue on a bunch of machines.
*
******************************************************************************/
static void acpi_ut_copy_id_string(char *destination, char *source)
{
/*
* Workaround for ID strings that have a leading asterisk. This construct
* is not allowed by the ACPI specification (ID strings must be
* alphanumeric), but enough existing machines have this embedded in their
* ID strings that the following code is useful.
*/
if (*source == '*') {
source++;
}
/* Do the actual copy */
ACPI_STRCPY(destination, source);
}
/*******************************************************************************
*
* 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 acpica_device_id **return_id)
{
union acpi_operand_object *obj_desc;
struct acpica_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 acpica_device_id) +
(acpi_size) length);
if (!hid) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Area for the string starts after DEVICE_ID struct */
hid->string = ACPI_ADD_PTR(char, hid, sizeof(struct acpica_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 {
acpi_ut_copy_id_string(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);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_execute_UID
*
* PARAMETERS: device_node - Node for the device
* return_id - Where the string UID is returned
*
* RETURN: Status
*
* DESCRIPTION: Executes the _UID control method that returns the unique
* ID of the device. The UID is either a 64-bit Integer (NOT an
* EISAID) or a string. Always returns a string. A 64-bit integer
* is converted to a decimal string.
*
* NOTE: Internal function, no parameter validation
*
******************************************************************************/
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);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_execute_CID
*
* PARAMETERS: device_node - Node for the device
* return_cid_list - Where the CID list is returned
*
* RETURN: Status, list of CID strings
*
* DESCRIPTION: Executes the _CID control method that returns one or more
* compatible hardware IDs for the device.
*
* NOTE: Internal function, no parameter validation
*
* A _CID method can return either a single compatible ID or a package of
* compatible IDs. Each compatible ID can be one of the following:
* 1) Integer (32 bit compressed EISA ID) or
* 2) String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss")
*
* The Integer CIDs are converted to string format by this function.
*
******************************************************************************/
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);
}

28
drivers/acpi/acpica/utmisc.c
View file

@ -118,6 +118,34 @@ const char *acpi_ut_validate_exception(acpi_status status)
return (ACPI_CAST_PTR(const char, exception));
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_is_pci_root_bridge
*
* PARAMETERS: Id - The HID/CID in string format
*
* RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
*
* DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
*
******************************************************************************/
u8 acpi_ut_is_pci_root_bridge(char *id)
{
/*
* Check if this is a PCI root bridge.
* ACPI 3.0+: check for a PCI Express root also.
*/
if (!(ACPI_STRCMP(id,
PCI_ROOT_HID_STRING)) ||
!(ACPI_STRCMP(id, PCI_EXPRESS_ROOT_HID_STRING))) {
return (TRUE);
}
return (FALSE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_is_aml_table

11
drivers/acpi/container.c
View file

@ -200,20 +200,17 @@ container_walk_namespace_cb(acpi_handle handle,
u32 lvl, void *context, void **rv)
{
char *hid = NULL;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_device_info *info;
acpi_status status;
int *action = context;
status = acpi_get_object_info(handle, &buffer);
if (ACPI_FAILURE(status) || !buffer.pointer) {
status = acpi_get_object_info(handle, &info);
if (ACPI_FAILURE(status)) {
return AE_OK;
}
info = buffer.pointer;
if (info->valid & ACPI_VALID_HID)
hid = info->hardware_id.value;
hid = info->hardware_id.string;
if (hid == NULL) {
goto end;
@ -240,7 +237,7 @@ container_walk_namespace_cb(acpi_handle handle,
}
end:
kfree(buffer.pointer);
kfree(info);
return AE_OK;
}

8
drivers/acpi/dock.c
View file

@ -231,18 +231,16 @@ static int is_ata(acpi_handle handle)
static int is_battery(acpi_handle handle)
{
struct acpi_device_info *info;
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
int ret = 1;
if (!ACPI_SUCCESS(acpi_get_object_info(handle, &buffer)))
if (!ACPI_SUCCESS(acpi_get_object_info(handle, &info)))
return 0;
info = buffer.pointer;
if (!(info->valid & ACPI_VALID_HID))
ret = 0;
else
ret = !strcmp("PNP0C0A", info->hardware_id.value);
ret = !strcmp("PNP0C0A", info->hardware_id.string);
kfree(buffer.pointer);
kfree(info);
return ret;
}

6
drivers/acpi/glue.c
View file

@ -93,15 +93,13 @@ do_acpi_find_child(acpi_handle handle, u32 lvl, void *context, void **rv)
{
acpi_status status;
struct acpi_device_info *info;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_find_child *find = context;
status = acpi_get_object_info(handle, &buffer);
status = acpi_get_object_info(handle, &info);
if (ACPI_SUCCESS(status)) {
info = buffer.pointer;
if (info->address == find->address)
find->handle = handle;
kfree(buffer.pointer);
kfree(info);
}
return AE_OK;
}

157
drivers/acpi/scan.c
View file

@ -60,13 +60,13 @@ static int create_modalias(struct acpi_device *acpi_dev, char *modalias,
}
if (acpi_dev->flags.compatible_ids) {
struct acpi_compatible_id_list *cid_list;
struct acpica_device_id_list *cid_list;
int i;
cid_list = acpi_dev->pnp.cid_list;
for (i = 0; i < cid_list->count; i++) {
count = snprintf(&modalias[len], size, "%s:",
cid_list->id[i].value);
cid_list->ids[i].string);
if (count < 0 || count >= size) {
printk(KERN_ERR PREFIX "%s cid[%i] exceeds event buffer size",
acpi_dev->pnp.device_name, i);
@ -287,14 +287,14 @@ int acpi_match_device_ids(struct acpi_device *device,
}
if (device->flags.compatible_ids) {
struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
struct acpica_device_id_list *cid_list = device->pnp.cid_list;
int i;
for (id = ids; id->id[0]; id++) {
/* compare multiple _CID entries against driver ids */
for (i = 0; i < cid_list->count; i++) {
if (!strcmp((char*)id->id,
cid_list->id[i].value))
cid_list->ids[i].string))
return 0;
}
}
@ -999,33 +999,89 @@ static int acpi_dock_match(struct acpi_device *device)
return acpi_get_handle(device->handle, "_DCK", &tmp);
}
static struct acpica_device_id_list*
acpi_add_cid(
struct acpi_device_info *info,
struct acpica_device_id *new_cid)
{
struct acpica_device_id_list *cid;
char *next_id_string;
acpi_size cid_length;
acpi_size new_cid_length;
u32 i;
/* Allocate new CID list with room for the new CID */
if (!new_cid)
new_cid_length = info->compatible_id_list.list_size;
else if (info->compatible_id_list.list_size)
new_cid_length = info->compatible_id_list.list_size +
new_cid->length + sizeof(struct acpica_device_id);
else
new_cid_length = sizeof(struct acpica_device_id_list) + new_cid->length;
cid = ACPI_ALLOCATE_ZEROED(new_cid_length);
if (!cid) {
return NULL;
}
cid->list_size = new_cid_length;
cid->count = info->compatible_id_list.count;
if (new_cid)
cid->count++;
next_id_string = (char *) cid->ids + (cid->count * sizeof(struct acpica_device_id));
/* Copy all existing CIDs */
for (i = 0; i < info->compatible_id_list.count; i++) {
cid_length = info->compatible_id_list.ids[i].length;
cid->ids[i].string = next_id_string;
cid->ids[i].length = cid_length;
ACPI_MEMCPY(next_id_string, info->compatible_id_list.ids[i].string,
cid_length);
next_id_string += cid_length;
}
/* Append the new CID */
if (new_cid) {
cid->ids[i].string = next_id_string;
cid->ids[i].length = new_cid->length;
ACPI_MEMCPY(next_id_string, new_cid->string, new_cid->length);
}
return cid;
}
static void acpi_device_set_id(struct acpi_device *device,
struct acpi_device *parent, acpi_handle handle,
int type)
{
struct acpi_device_info *info;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_device_info *info = NULL;
char *hid = NULL;
char *uid = NULL;
struct acpi_compatible_id_list *cid_list = NULL;
const char *cid_add = NULL;
struct acpica_device_id_list *cid_list = NULL;
char *cid_add = NULL;
acpi_status status;
switch (type) {
case ACPI_BUS_TYPE_DEVICE:
status = acpi_get_object_info(handle, &buffer);
status = acpi_get_object_info(handle, &info);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__);
return;
}
info = buffer.pointer;
if (info->valid & ACPI_VALID_HID)
hid = info->hardware_id.value;
hid = info->hardware_id.string;
if (info->valid & ACPI_VALID_UID)
uid = info->unique_id.value;
uid = info->unique_id.string;
if (info->valid & ACPI_VALID_CID)
cid_list = &info->compatibility_id;
cid_list = &info->compatible_id_list;
if (info->valid & ACPI_VALID_ADR) {
device->pnp.bus_address = info->address;
device->flags.bus_address = 1;
@ -1076,55 +1132,44 @@ static void acpi_device_set_id(struct acpi_device *device,
}
if (hid) {
strcpy(device->pnp.hardware_id, hid);
device->flags.hardware_id = 1;
}
if (uid) {
strcpy(device->pnp.unique_id, uid);
device->flags.unique_id = 1;
}
if (cid_list || cid_add) {
struct acpi_compatible_id_list *list;
int size = 0;
int count = 0;
if (cid_list) {
size = cid_list->size;
} else if (cid_add) {
size = sizeof(struct acpi_compatible_id_list);
cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size);
if (!cid_list) {
printk(KERN_ERR "Memory allocation error\n");
kfree(buffer.pointer);
return;
} else {
cid_list->count = 0;
cid_list->size = size;
}
device->pnp.hardware_id = ACPI_ALLOCATE_ZEROED(strlen (hid) + 1);
if (device->pnp.hardware_id) {
strcpy(device->pnp.hardware_id, hid);
device->flags.hardware_id = 1;
}
} else
device->pnp.hardware_id = NULL;
if (uid) {
device->pnp.unique_id = ACPI_ALLOCATE_ZEROED(strlen (uid) + 1);
if (device->pnp.unique_id) {
strcpy(device->pnp.unique_id, uid);
device->flags.unique_id = 1;
}
} else
device->pnp.unique_id = NULL;
if (cid_list || cid_add) {
struct acpica_device_id_list *list;
if (cid_add) {
struct acpica_device_id cid;
cid.length = strlen (cid_add) + 1;
cid.string = cid_add;
list = acpi_add_cid(info, &cid);
} else {
list = acpi_add_cid(info, NULL);
}
if (cid_add)
size += sizeof(struct acpi_compatible_id);
list = kmalloc(size, GFP_KERNEL);
if (list) {
if (cid_list) {
memcpy(list, cid_list, cid_list->size);
count = cid_list->count;
}
if (cid_add) {
strncpy(list->id[count].value, cid_add,
ACPI_MAX_CID_LENGTH);
count++;
device->flags.compatible_ids = 1;
}
list->size = size;
list->count = count;
device->pnp.cid_list = list;
} else
printk(KERN_ERR PREFIX "Memory allocation error\n");
if (cid_add)
device->flags.compatible_ids = 1;
}
}
kfree(buffer.pointer);
kfree(info);
}
static int acpi_device_set_context(struct acpi_device *device, int type)

9
drivers/char/agp/hp-agp.c
View file

@ -478,7 +478,6 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret)
{
acpi_handle handle, parent;
acpi_status status;
struct acpi_buffer buffer;
struct acpi_device_info *info;
u64 lba_hpa, sba_hpa, length;
int match;
@ -490,13 +489,11 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret)
/* Look for an enclosing IOC scope and find its CSR space */
handle = obj;
do {
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_get_object_info(handle, &buffer);
status = acpi_get_object_info(handle, &info);
if (ACPI_SUCCESS(status)) {
/* TBD check _CID also */
info = buffer.pointer;
info->hardware_id.value[sizeof(info->hardware_id)-1] = '\0';
match = (strcmp(info->hardware_id.value, "HWP0001") == 0);
info->hardware_id.string[sizeof(info->hardware_id.length)-1] = '\0';
match = (strcmp(info->hardware_id.string, "HWP0001") == 0);
kfree(info);
if (match) {
status = hp_acpi_csr_space(handle, &sba_hpa, &length);

5
drivers/ide/ide-acpi.c
View file

@ -114,8 +114,6 @@ static int ide_get_dev_handle(struct device *dev, acpi_handle *handle,
unsigned int bus, devnum, func;
acpi_integer addr;
acpi_handle dev_handle;
struct acpi_buffer buffer = {.length = ACPI_ALLOCATE_BUFFER,
.pointer = NULL};
acpi_status status;
struct acpi_device_info *dinfo = NULL;
int ret = -ENODEV;
@ -134,12 +132,11 @@ static int ide_get_dev_handle(struct device *dev, acpi_handle *handle,
goto err;
}
status = acpi_get_object_info(dev_handle, &buffer);
status = acpi_get_object_info(dev_handle, &dinfo);
if (ACPI_FAILURE(status)) {
DEBPRINT("get_object_info for device failed\n");
goto err;
}
dinfo = buffer.pointer;
if (dinfo && (dinfo->valid & ACPI_VALID_ADR) &&
dinfo->address == addr) {
*pcidevfn = addr;

12
drivers/pci/hotplug/acpiphp_ibm.c
View file

@ -398,23 +398,21 @@ static acpi_status __init ibm_find_acpi_device(acpi_handle handle,
acpi_handle *phandle = (acpi_handle *)context;
acpi_status status;
struct acpi_device_info *info;
struct acpi_buffer info_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
int retval = 0;
status = acpi_get_object_info(handle, &info_buffer);
status = acpi_get_object_info(handle, &info);
if (ACPI_FAILURE(status)) {
err("%s: Failed to get device information status=0x%x\n",
__func__, status);
return retval;
}
info = info_buffer.pointer;
info->hardware_id.value[sizeof(info->hardware_id.value) - 1] = '\0';
info->hardware_id.string[sizeof(info->hardware_id.length) - 1] = '\0';
if (info->current_status && (info->valid & ACPI_VALID_HID) &&
(!strcmp(info->hardware_id.value, IBM_HARDWARE_ID1) ||
!strcmp(info->hardware_id.value, IBM_HARDWARE_ID2))) {
(!strcmp(info->hardware_id.string, IBM_HARDWARE_ID1) ||
!strcmp(info->hardware_id.string, IBM_HARDWARE_ID2))) {
dbg("found hardware: %s, handle: %p\n",
info->hardware_id.value, handle);
info->hardware_id.string, handle);
*phandle = handle;
/* returning non-zero causes the search to stop
* and returns this value to the caller of

7
drivers/platform/x86/sony-laptop.c
View file

@ -976,15 +976,12 @@ static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
void *context, void **return_value)
{
struct acpi_device_info *info;
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
if (ACPI_SUCCESS(acpi_get_object_info(handle, &buffer))) {
info = buffer.pointer;
if (ACPI_SUCCESS(acpi_get_object_info(handle, &info))) {
printk(KERN_WARNING DRV_PFX "method: name: %4.4s, args %X\n",
(char *)&info->name, info->param_count);
kfree(buffer.pointer);
kfree(info);
}
return AE_OK;

6
drivers/pnp/pnpacpi/core.c
View file

@ -194,13 +194,13 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
pnpacpi_parse_resource_option_data(dev);
if (device->flags.compatible_ids) {
struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
struct acpica_device_id_list *cid_list = device->pnp.cid_list;
int i;
for (i = 0; i < cid_list->count; i++) {
if (!ispnpidacpi(cid_list->id[i].value))
if (!ispnpidacpi(cid_list->ids[i].string))
continue;
pnp_add_id(dev, cid_list->id[i].value);
pnp_add_id(dev, cid_list->ids[i].string);
}
}

8
include/acpi/acpi_bus.h
View file

@ -173,17 +173,15 @@ struct acpi_device_dir {
typedef char acpi_bus_id[8];
typedef unsigned long acpi_bus_address;
typedef char acpi_hardware_id[15];
typedef char acpi_unique_id[9];
typedef char acpi_device_name[40];
typedef char acpi_device_class[20];
struct acpi_device_pnp {
acpi_bus_id bus_id; /* Object name */
acpi_bus_address bus_address; /* _ADR */
acpi_hardware_id hardware_id; /* _HID */
struct acpi_compatible_id_list *cid_list; /* _CIDs */
acpi_unique_id unique_id; /* _UID */
char *hardware_id; /* _HID */
struct acpica_device_id_list *cid_list; /* _CIDs */
char *unique_id; /* _UID */
acpi_device_name device_name; /* Driver-determined */
acpi_device_class device_class; /* " */
};

3
include/acpi/acpixf.h
View file

@ -200,7 +200,8 @@ acpi_evaluate_object_typed(acpi_handle object,
acpi_object_type return_type);
acpi_status
acpi_get_object_info(acpi_handle handle, struct acpi_buffer *return_buffer);
acpi_get_object_info(acpi_handle handle,
struct acpi_device_info **return_buffer);
acpi_status acpi_install_method(u8 *buffer);

87
include/acpi/actypes.h
View file

@ -338,7 +338,7 @@ typedef u32 acpi_physical_address;
/* PM Timer ticks per second (HZ) */
#define PM_TIMER_FREQUENCY 3579545
#define PM_TIMER_FREQUENCY 3579545
/*******************************************************************************
*
@ -969,38 +969,60 @@ acpi_status(*acpi_walk_callback) (acpi_handle obj_handle,
#define ACPI_INTERRUPT_NOT_HANDLED 0x00
#define ACPI_INTERRUPT_HANDLED 0x01
/* Length of _HID, _UID, _CID, and UUID values */
/* Length of 32-bit EISAID values when converted back to a string */
#define ACPI_EISAID_STRING_SIZE 8 /* Includes null terminator */
/* Length of UUID (string) values */
#define ACPI_DEVICE_ID_LENGTH 0x09
#define ACPI_MAX_CID_LENGTH 48
#define ACPI_UUID_LENGTH 16
/* Common string version of device HIDs and UIDs */
/* Structures used for device/processor HID, UID, CID */
struct acpica_device_id {
char value[ACPI_DEVICE_ID_LENGTH];
u32 length; /* Length of string + null */
char *string;
};
/* Common string version of device CIDs */
struct acpi_compatible_id {
char value[ACPI_MAX_CID_LENGTH];
struct acpica_device_id_list {
u32 count; /* Number of IDs in Ids array */
u32 list_size; /* Size of list, including ID strings */
struct acpica_device_id ids[1]; /* ID array */
};
struct acpi_compatible_id_list {
u32 count;
u32 size;
struct acpi_compatible_id id[1];
/*
* Structure returned from acpi_get_object_info.
* Optimized for both 32- and 64-bit builds
*/
struct acpi_device_info {
u32 info_size; /* Size of info, including ID strings */
u32 name; /* ACPI object Name */
acpi_object_type type; /* ACPI object Type */
u8 param_count; /* If a method, required parameter count */
u8 valid; /* Indicates which optional fields are valid */
u8 flags; /* Miscellaneous info */
u8 highest_dstates[4]; /* _sx_d values: 0xFF indicates not valid */
u8 lowest_dstates[5]; /* _sx_w values: 0xFF indicates not valid */
u32 current_status; /* _STA value */
acpi_integer address; /* _ADR value */
struct acpica_device_id hardware_id; /* _HID value */
struct acpica_device_id unique_id; /* _UID value */
struct acpica_device_id_list compatible_id_list; /* _CID list <must be last> */
};
/* Structure and flags for acpi_get_object_info */
/* Values for Flags field above (acpi_get_object_info) */
#define ACPI_VALID_STA 0x0001
#define ACPI_VALID_ADR 0x0002
#define ACPI_VALID_HID 0x0004
#define ACPI_VALID_UID 0x0008
#define ACPI_VALID_CID 0x0010
#define ACPI_VALID_SXDS 0x0020
#define ACPI_PCI_ROOT_BRIDGE 0x01
/* Flags for Valid field above (acpi_get_object_info) */
#define ACPI_VALID_STA 0x01
#define ACPI_VALID_ADR 0x02
#define ACPI_VALID_HID 0x04
#define ACPI_VALID_UID 0x08
#define ACPI_VALID_CID 0x10
#define ACPI_VALID_SXDS 0x20
#define ACPI_VALID_SXWS 0x40
/* Flags for _STA method */
@ -1011,29 +1033,6 @@ struct acpi_compatible_id_list {
#define ACPI_STA_DEVICE_OK 0x08 /* Synonym */
#define ACPI_STA_BATTERY_PRESENT 0x10
#define ACPI_COMMON_OBJ_INFO \
acpi_object_type type; /* ACPI object type */ \
acpi_name name /* ACPI object Name */
struct acpi_obj_info_header {
ACPI_COMMON_OBJ_INFO;
};
/* Structure returned from Get Object Info */
struct acpi_device_info {
ACPI_COMMON_OBJ_INFO;
u32 param_count; /* If a method, required parameter count */
u32 valid; /* Indicates which fields below are valid */
u32 current_status; /* _STA value */
acpi_integer address; /* _ADR value if any */
struct acpica_device_id hardware_id; /* _HID value if any */
struct acpica_device_id unique_id; /* _UID value if any */
u8 highest_dstates[4]; /* _sx_d values: 0xFF indicates not valid */
struct acpi_compatible_id_list compatibility_id; /* List of _CIDs if any */
};
/* Context structs for address space handlers */
struct acpi_pci_id {