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path: root/drivers/acpi/acpica/uteval.c
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Diffstat (limited to 'drivers/acpi/acpica/uteval.c')
-rw-r--r--drivers/acpi/acpica/uteval.c98
1 files changed, 62 insertions, 36 deletions
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index 9c9897dbe907..006b16c26017 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -59,26 +59,35 @@ acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
/*
* Strings supported by the _OSI predefined (internal) method.
+ *
+ * March 2009: Removed "Linux" as this host no longer wants to respond true
+ * for this string. Basically, the only safe OS strings are windows-related
+ * and in many or most cases represent the only test path within the
+ * BIOS-provided ASL code.
+ *
+ * The second element of each entry is used to track the newest version of
+ * Windows that the BIOS has requested.
*/
-static char *acpi_interfaces_supported[] = {
+static struct acpi_interface_info acpi_interfaces_supported[] = {
/* Operating System Vendor Strings */
- "Windows 2000", /* Windows 2000 */
- "Windows 2001", /* Windows XP */
- "Windows 2001 SP1", /* Windows XP SP1 */
- "Windows 2001 SP2", /* Windows XP SP2 */
- "Windows 2001.1", /* Windows Server 2003 */
- "Windows 2001.1 SP1", /* Windows Server 2003 SP1 - Added 03/2006 */
- "Windows 2006", /* Windows Vista - Added 03/2006 */
+ {"Windows 2000", ACPI_OSI_WIN_2000}, /* Windows 2000 */
+ {"Windows 2001", ACPI_OSI_WIN_XP}, /* Windows XP */
+ {"Windows 2001 SP1", ACPI_OSI_WIN_XP_SP1}, /* Windows XP SP1 */
+ {"Windows 2001.1", ACPI_OSI_WINSRV_2003}, /* Windows Server 2003 */
+ {"Windows 2001 SP2", ACPI_OSI_WIN_XP_SP2}, /* Windows XP SP2 */
+ {"Windows 2001.1 SP1", ACPI_OSI_WINSRV_2003_SP1}, /* Windows Server 2003 SP1 - Added 03/2006 */
+ {"Windows 2006", ACPI_OSI_WIN_VISTA}, /* Windows Vista - Added 03/2006 */
/* Feature Group Strings */
- "Extended Address Space Descriptor"
- /*
- * All "optional" feature group strings (features that are implemented
- * by the host) should be implemented in the host version of
- * acpi_os_validate_interface and should not be added here.
- */
+ {"Extended Address Space Descriptor", 0}
+
+ /*
+ * All "optional" feature group strings (features that are implemented
+ * by the host) should be implemented in the host version of
+ * acpi_os_validate_interface and should not be added here.
+ */
};
/*******************************************************************************
@@ -98,6 +107,7 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
acpi_status status;
union acpi_operand_object *string_desc;
union acpi_operand_object *return_desc;
+ u32 return_value;
u32 i;
ACPI_FUNCTION_TRACE(ut_osi_implementation);
@@ -116,19 +126,28 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
return_ACPI_STATUS(AE_NO_MEMORY);
}
- /* Default return value is 0, NOT-SUPPORTED */
+ /* Default return value is 0, NOT SUPPORTED */
- return_desc->integer.value = 0;
- walk_state->return_desc = return_desc;
+ return_value = 0;
/* Compare input string to static table of supported interfaces */
for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) {
- if (!ACPI_STRCMP
- (string_desc->string.pointer,
- acpi_interfaces_supported[i])) {
- return_desc->integer.value = ACPI_UINT32_MAX;
- goto done;
+ if (!ACPI_STRCMP(string_desc->string.pointer,
+ acpi_interfaces_supported[i].name)) {
+ /*
+ * The interface is supported.
+ * Update the osi_data if necessary. We keep track of the latest
+ * version of Windows that has been requested by the BIOS.
+ */
+ if (acpi_interfaces_supported[i].value >
+ acpi_gbl_osi_data) {
+ acpi_gbl_osi_data =
+ acpi_interfaces_supported[i].value;
+ }
+
+ return_value = ACPI_UINT32_MAX;
+ goto exit;
}
}
@@ -139,15 +158,22 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
*/
status = acpi_os_validate_interface(string_desc->string.pointer);
if (ACPI_SUCCESS(status)) {
- return_desc->integer.value = ACPI_UINT32_MAX;
+
+ /* The interface is supported */
+
+ return_value = ACPI_UINT32_MAX;
}
-done:
- ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO, "ACPI: BIOS _OSI(%s) %ssupported\n",
- string_desc->string.pointer,
- return_desc->integer.value == 0 ? "not-" : ""));
+exit:
+ ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO,
+ "ACPI: BIOS _OSI(%s) is %ssupported\n",
+ string_desc->string.pointer, return_value == 0 ? "not " : ""));
- return_ACPI_STATUS(AE_OK);
+ /* Complete the return value */
+
+ return_desc->integer.value = return_value;
+ walk_state->return_desc = return_desc;
+ return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
@@ -167,8 +193,8 @@ acpi_status acpi_osi_invalidate(char *interface)
int i;
for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) {
- if (!ACPI_STRCMP(interface, acpi_interfaces_supported[i])) {
- *acpi_interfaces_supported[i] = '\0';
+ if (!ACPI_STRCMP(interface, acpi_interfaces_supported[i].name)) {
+ *acpi_interfaces_supported[i].name = '\0';
return AE_OK;
}
}
@@ -248,7 +274,7 @@ acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
/* Map the return object type to the bitmapped type */
- switch (ACPI_GET_OBJECT_TYPE(info->return_object)) {
+ switch ((info->return_object)->common.type) {
case ACPI_TYPE_INTEGER:
return_btype = ACPI_BTYPE_INTEGER;
break;
@@ -418,7 +444,7 @@ acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
return_ACPI_STATUS(status);
}
- if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
+ if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
/* Convert the Numeric HID to string */
@@ -459,7 +485,7 @@ acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
struct acpi_compatible_id *one_cid)
{
- switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
+ switch (obj_desc->common.type) {
case ACPI_TYPE_INTEGER:
/* Convert the Numeric CID to string */
@@ -527,7 +553,7 @@ acpi_ut_execute_CID(struct acpi_namespace_node * device_node,
/* Get the number of _CIDs returned */
count = 1;
- if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) {
+ if (obj_desc->common.type == ACPI_TYPE_PACKAGE) {
count = obj_desc->package.count;
}
@@ -555,7 +581,7 @@ acpi_ut_execute_CID(struct acpi_namespace_node * device_node,
/* 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) {
+ if (obj_desc->common.type == ACPI_TYPE_PACKAGE) {
/* Translate each package element */
@@ -620,7 +646,7 @@ acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
return_ACPI_STATUS(status);
}
- if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
+ if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
/* Convert the Numeric UID to string */
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 20:47:11 +0300