diff options
Diffstat (limited to 'drivers/acpi/acpica/uteval.c')
| -rw-r--r-- | drivers/acpi/acpica/uteval.c | 98 |
1 files changed, 62 insertions, 36 deletions
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c index 9c9897dbe90..006b16c2601 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 */ |