ACPI: ACPICA 20060421

Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)

Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)

Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.

Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)

Defined and deployed a new OSL interface,
acpi_os_validate_address().  This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)

Defined and deployed a new OSL interface,
acpi_os_validate_interface().  This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)

Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)

Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.

The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 67 insertions, 21 deletions

diff --git a/drivers/acpi/utilities/uteval.c b/drivers/acpi/utilities/uteval.c
index 68b9eff4b326..444d3a502c46 100644
--- a/drivers/acpi/utilities/uteval.c
+++ b/drivers/acpi/utilities/uteval.c
@@ -56,6 +56,34 @@ 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.
+ */
+static const char *acpi_interfaces_supported[] = {
+	/* Operating System Vendor Strings */
+
+	"Linux",
+	"Windows 2000",
+	"Windows 2001",
+	"Windows 2001 SP0",
+	"Windows 2001 SP1",
+	"Windows 2001 SP2",
+	"Windows 2001 SP3",
+	"Windows 2001 SP4",
+	"Windows 2001.1",
+	"Windows 2001.1 SP1",	/* Added 03/2006 */
+	"Windows 2006",		/* 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.
+	     */
+};
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ut_osi_implementation
@@ -64,18 +92,18 @@ acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Implementation of _OSI predefined control method
- *              Supported = _OSI (String)
+ * DESCRIPTION: Implementation of the _OSI predefined control method
  *
  ******************************************************************************/
 
 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;
 	acpi_native_uint i;
 
-	ACPI_FUNCTION_TRACE("ut_osi_implementation");
+	ACPI_FUNCTION_TRACE(ut_osi_implementation);
 
 	/* Validate the string input argument */
 
@@ -84,29 +112,47 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
 		return_ACPI_STATUS(AE_TYPE);
 	}
 
-	/* Create a return object (Default value = 0) */
+	/* Create a return object */
 
 	return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
 	if (!return_desc) {
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
-	/* Compare input string to table of supported strings */
+	/* Default return value is SUPPORTED */
 
-	for (i = 0; i < ACPI_NUM_OSI_STRINGS; i++) {
-		if (!ACPI_STRCMP(string_desc->string.pointer,
-				 ACPI_CAST_PTR(char,
-					       acpi_gbl_valid_osi_strings[i])))
-		{
+	return_desc->integer.value = ACPI_UINT32_MAX;
+	walk_state->return_desc = return_desc;
+
+	/* Compare input string to static table of supported interfaces */
 
-			/* This string is supported */
+	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 = 0xFFFFFFFF;
-			break;
+			/* The interface is supported */
+
+			return_ACPI_STATUS(AE_CTRL_TERMINATE);
 		}
 	}
 
-	walk_state->return_desc = return_desc;
+	/*
+	 * Did not match the string in the static table, call the host OSL to
+	 * check for a match with one of the optional strings (such as
+	 * "Module Device", "3.0 Thermal Model", etc.)
+	 */
+	status = acpi_os_validate_interface(string_desc->string.pointer);
+	if (ACPI_SUCCESS(status)) {
+
+		/* The interface is supported */
+
+		return_ACPI_STATUS(AE_CTRL_TERMINATE);
+	}
+
+	/* The interface is not supported */
+
+	return_desc->integer.value = 0;
 	return_ACPI_STATUS(AE_CTRL_TERMINATE);
 }
 
@@ -139,7 +185,7 @@ acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
 	acpi_status status;
 	u32 return_btype;
 
-	ACPI_FUNCTION_TRACE("ut_evaluate_object");
+	ACPI_FUNCTION_TRACE(ut_evaluate_object);
 
 	info.node = prefix_node;
 	info.parameters = NULL;
@@ -258,7 +304,7 @@ acpi_ut_evaluate_numeric_object(char *object_name,
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
 
-	ACPI_FUNCTION_TRACE("ut_evaluate_numeric_object");
+	ACPI_FUNCTION_TRACE(ut_evaluate_numeric_object);
 
 	status = acpi_ut_evaluate_object(device_node, object_name,
 					 ACPI_BTYPE_INTEGER, &obj_desc);
@@ -334,7 +380,7 @@ acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
 
-	ACPI_FUNCTION_TRACE("ut_execute_HID");
+	ACPI_FUNCTION_TRACE(ut_execute_HID);
 
 	status = acpi_ut_evaluate_object(device_node, METHOD_NAME__HID,
 					 ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
@@ -438,7 +484,7 @@ acpi_ut_execute_CID(struct acpi_namespace_node * device_node,
 	struct acpi_compatible_id_list *cid_list;
 	acpi_native_uint i;
 
-	ACPI_FUNCTION_TRACE("ut_execute_CID");
+	ACPI_FUNCTION_TRACE(ut_execute_CID);
 
 	/* Evaluate the _CID method for this device */
 
@@ -536,7 +582,7 @@ acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
 
-	ACPI_FUNCTION_TRACE("ut_execute_UID");
+	ACPI_FUNCTION_TRACE(ut_execute_UID);
 
 	status = acpi_ut_evaluate_object(device_node, METHOD_NAME__UID,
 					 ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
@@ -586,7 +632,7 @@ acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 * flags)
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
 
-	ACPI_FUNCTION_TRACE("ut_execute_STA");
+	ACPI_FUNCTION_TRACE(ut_execute_STA);
 
 	status = acpi_ut_evaluate_object(device_node, METHOD_NAME__STA,
 					 ACPI_BTYPE_INTEGER, &obj_desc);
@@ -636,7 +682,7 @@ acpi_ut_execute_sxds(struct acpi_namespace_node *device_node, u8 * highest)
 	acpi_status status;
 	u32 i;
 
-	ACPI_FUNCTION_TRACE("ut_execute_Sxds");
+	ACPI_FUNCTION_TRACE(ut_execute_sxds);
 
 	for (i = 0; i < 4; i++) {
 		highest[i] = 0xFF;