ACPI 5.0: Support for GeneralPurposeIo and GenericSerialBus operation region

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
2011-11-16 14:14:32 +08:00
zatwierdzone przez Len Brown
rodzic 9ce81784c9
commit 2da120b684
6 zmienionych plików z 41 dodań i 18 usunięć

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@@ -100,18 +100,25 @@ acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state,
(obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_SMBUS
|| obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GSBUS
|| obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_IPMI)) {
/*
* This is an SMBus or IPMI read. We must create a buffer to hold
* This is an SMBus, GSBus or IPMI read. We must create a buffer to hold
* the data and then directly access the region handler.
*
* Note: Smbus protocol value is passed in upper 16-bits of Function
* Note: SMBus and GSBus protocol value is passed in upper 16-bits of Function
*/
if (obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_SMBUS) {
length = ACPI_SMBUS_BUFFER_SIZE;
function =
ACPI_READ | (obj_desc->field.attribute << 16);
} else if (obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GSBUS) {
length = ACPI_GSBUS_BUFFER_SIZE;
function =
ACPI_READ | (obj_desc->field.attribute << 16);
} else { /* IPMI */
length = ACPI_IPMI_BUFFER_SIZE;
@@ -248,21 +255,23 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
(obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_SMBUS
|| obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GSBUS
|| obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_IPMI)) {
/*
* This is an SMBus or IPMI write. We will bypass the entire field
* This is an SMBus, GSBus or IPMI write. We will bypass the entire field
* mechanism and handoff the buffer directly to the handler. For
* these address spaces, the buffer is bi-directional; on a write,
* return data is returned in the same buffer.
*
* Source must be a buffer of sufficient size:
* ACPI_SMBUS_BUFFER_SIZE or ACPI_IPMI_BUFFER_SIZE.
* ACPI_SMBUS_BUFFER_SIZE, ACPI_GSBUS_BUFFER_SIZE, or ACPI_IPMI_BUFFER_SIZE.
*
* Note: SMBus protocol type is passed in upper 16-bits of Function
* Note: SMBus and GSBus protocol type is passed in upper 16-bits of Function
*/
if (source_desc->common.type != ACPI_TYPE_BUFFER) {
ACPI_ERROR((AE_INFO,
"SMBus or IPMI write requires Buffer, found type %s",
"SMBus/IPMI/GenericSerialBus write requires Buffer, found type %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
@@ -273,6 +282,11 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
length = ACPI_SMBUS_BUFFER_SIZE;
function =
ACPI_WRITE | (obj_desc->field.attribute << 16);
} else if (obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_GSBUS) {
length = ACPI_GSBUS_BUFFER_SIZE;
function =
ACPI_WRITE | (obj_desc->field.attribute << 16);
} else { /* IPMI */
length = ACPI_IPMI_BUFFER_SIZE;
@@ -281,7 +295,7 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
if (source_desc->buffer.length < length) {
ACPI_ERROR((AE_INFO,
"SMBus or IPMI write requires Buffer of length %u, found length %u",
"SMBus/IPMI/GenericSerialBus write requires Buffer of length %u, found length %u",
length, source_desc->buffer.length));
return_ACPI_STATUS(AE_AML_BUFFER_LIMIT);