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path: root/drivers/acpi/acpica/exfield.c
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Diffstat (limited to 'drivers/acpi/acpica/exfield.c')
-rw-r--r--drivers/acpi/acpica/exfield.c30
1 files changed, 22 insertions, 8 deletions
diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c
index 0bde2230c02..dc092f5b35d 100644
--- a/drivers/acpi/acpica/exfield.c
+++ b/drivers/acpi/acpica/exfield.c
@@ -5,7 +5,7 @@
*****************************************************************************/
/*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -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);