[ACPI] ACPICA 20050916

Fixed a problem within the Resource Manager where
support for the Generic Register descriptor was not fully
implemented.  This descriptor is now fully recognized,
parsed, disassembled, and displayed.

Restructured the Resource Manager code to utilize
table-driven dispatch and lookup, eliminating many of the
large switch() statements.  This reduces overall subsystem
code size and code complexity.  Affects the resource parsing
and construction, disassembly, and debug dump output.

Cleaned up and restructured the debug dump output for all
resource descriptors.  Improved readability of the output
and reduced code size.

Fixed a problem where changes to internal data structures
caused the optional ACPI_MUTEX_DEBUG code to fail
compilation if specified.

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

1 files changed, 198 insertions, 36 deletions

diff --git a/drivers/acpi/resources/rsmisc.c b/drivers/acpi/resources/rsmisc.c
index 7a8a34e757f..fa7f5a85b61 100644
--- a/drivers/acpi/resources/rsmisc.c
+++ b/drivers/acpi/resources/rsmisc.c
@@ -49,6 +49,169 @@ ACPI_MODULE_NAME("rsmisc")
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_rs_generic_register_resource
+ *
+ * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
+ *                                        stream
+ *              bytes_consumed          - Pointer to where the number of bytes
+ *                                        consumed the byte_stream_buffer is
+ *                                        returned
+ *              output_buffer           - Pointer to the return data buffer
+ *              structure_size          - Pointer to where the number of bytes
+ *                                        in the return data struct is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Take the resource byte stream and fill out the appropriate
+ *              structure pointed to by the output_buffer. Return the
+ *              number of bytes consumed from the byte stream.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_rs_generic_register_resource(u8 * byte_stream_buffer,
+				  acpi_size * bytes_consumed,
+				  u8 ** output_buffer,
+				  acpi_size * structure_size)
+{
+	u8 *buffer = byte_stream_buffer;
+	struct acpi_resource *output_struct = (void *)*output_buffer;
+	u16 temp16;
+	u8 temp8;
+	acpi_size struct_size =
+	    ACPI_SIZEOF_RESOURCE(struct acpi_resource_generic_reg);
+
+	ACPI_FUNCTION_TRACE("rs_generic_register_resource");
+
+	/* Byte 0 is the Descriptor Type */
+
+	buffer += 1;
+
+	/* Get the Descriptor Length field (Bytes 1-2) */
+
+	ACPI_MOVE_16_TO_16(&temp16, buffer);
+	buffer += 2;
+
+	/* Validate the descriptor length */
+
+	if (temp16 != 12) {
+		return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
+	}
+
+	/* The number of bytes consumed is fixed (12 + 3) */
+
+	*bytes_consumed = 15;
+
+	/* Fill out the structure */
+
+	output_struct->type = ACPI_RSTYPE_GENERIC_REG;
+
+	/* Get space_id (Byte 3) */
+
+	temp8 = *buffer;
+	output_struct->data.generic_reg.space_id = temp8;
+	buffer += 1;
+
+	/* Get register_bit_width (Byte 4) */
+
+	temp8 = *buffer;
+	output_struct->data.generic_reg.bit_width = temp8;
+	buffer += 1;
+
+	/* Get register_bit_offset (Byte 5) */
+
+	temp8 = *buffer;
+	output_struct->data.generic_reg.bit_offset = temp8;
+	buffer += 1;
+
+	/* Get address_size (Byte 6) */
+
+	temp8 = *buffer;
+	output_struct->data.generic_reg.address_size = temp8;
+	buffer += 1;
+
+	/* Get register_address (Bytes 7-14) */
+
+	ACPI_MOVE_64_TO_64(&output_struct->data.generic_reg.address, buffer);
+
+	/* Set the Length parameter */
+
+	output_struct->length = (u32) struct_size;
+
+	/* Return the final size of the structure */
+
+	*structure_size = struct_size;
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_generic_register_stream
+ *
+ * PARAMETERS:  Resource                - Pointer to the resource linked list
+ *              output_buffer           - Pointer to the user's return buffer
+ *              bytes_consumed          - Pointer to where the number of bytes
+ *                                        used in the output_buffer is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Take the linked list resource structure and fills in the
+ *              the appropriate bytes in a byte stream
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_generic_register_stream(struct acpi_resource *resource,
+				u8 ** output_buffer, acpi_size * bytes_consumed)
+{
+	u8 *buffer = *output_buffer;
+	u16 temp16;
+
+	ACPI_FUNCTION_TRACE("rs_generic_register_stream");
+
+	/* Set the Descriptor Type (Byte 0) */
+
+	*buffer = ACPI_RDESC_TYPE_GENERIC_REGISTER;
+	buffer += 1;
+
+	/* Set the Descriptor Length (Bytes 1-2) */
+
+	temp16 = 12;
+	ACPI_MOVE_16_TO_16(buffer, &temp16);
+	buffer += 2;
+
+	/* Set space_id (Byte 3) */
+
+	*buffer = (u8) resource->data.generic_reg.space_id;
+	buffer += 1;
+
+	/* Set register_bit_width (Byte 4) */
+
+	*buffer = (u8) resource->data.generic_reg.bit_width;
+	buffer += 1;
+
+	/* Set register_bit_offset (Byte 5) */
+
+	*buffer = (u8) resource->data.generic_reg.bit_offset;
+	buffer += 1;
+
+	/* Set address_size (Byte 6) */
+
+	*buffer = (u8) resource->data.generic_reg.address_size;
+	buffer += 1;
+
+	/* Set register_address (Bytes 7-14) */
+
+	ACPI_MOVE_64_TO_64(buffer, &resource->data.generic_reg.address);
+	buffer += 8;
+
+	/* Return the number of bytes consumed in this operation */
+
+	*bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_rs_end_tag_resource
  *
  * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
@@ -67,6 +230,7 @@ ACPI_MODULE_NAME("rsmisc")
  *              number of bytes consumed from the byte stream.
  *
  ******************************************************************************/
+
 acpi_status
 acpi_rs_end_tag_resource(u8 * byte_stream_buffer,
 			 acpi_size * bytes_consumed,
@@ -81,9 +245,9 @@ acpi_rs_end_tag_resource(u8 * byte_stream_buffer,
 
 	*bytes_consumed = 2;
 
-	/*  Fill out the structure */
+	/* Fill out the structure */
 
-	output_struct->id = ACPI_RSTYPE_END_TAG;
+	output_struct->type = ACPI_RSTYPE_END_TAG;
 
 	/* Set the Length parameter */
 
@@ -99,7 +263,7 @@ acpi_rs_end_tag_resource(u8 * byte_stream_buffer,
  *
  * FUNCTION:    acpi_rs_end_tag_stream
  *
- * PARAMETERS:  linked_list             - Pointer to the resource linked list
+ * PARAMETERS:  Resource                - Pointer to the resource linked list
  *              output_buffer           - Pointer to the user's return buffer
  *              bytes_consumed          - Pointer to where the number of bytes
  *                                        used in the output_buffer is returned
@@ -112,7 +276,7 @@ acpi_rs_end_tag_resource(u8 * byte_stream_buffer,
  ******************************************************************************/
 
 acpi_status
-acpi_rs_end_tag_stream(struct acpi_resource *linked_list,
+acpi_rs_end_tag_stream(struct acpi_resource *resource,
 		       u8 ** output_buffer, acpi_size * bytes_consumed)
 {
 	u8 *buffer = *output_buffer;
@@ -120,9 +284,9 @@ acpi_rs_end_tag_stream(struct acpi_resource *linked_list,
 
 	ACPI_FUNCTION_TRACE("rs_end_tag_stream");
 
-	/* The descriptor field is static */
+	/* The Descriptor Type field is static */
 
-	*buffer = 0x79;
+	*buffer = ACPI_RDESC_TYPE_END_TAG | 0x01;
 	buffer += 1;
 
 	/*
@@ -180,7 +344,7 @@ acpi_rs_vendor_resource(u8 * byte_stream_buffer,
 
 	temp8 = *buffer;
 
-	if (temp8 & 0x80) {
+	if (temp8 & ACPI_RDESC_TYPE_LARGE) {
 		/* Large Item, point to the length field */
 
 		buffer += 1;
@@ -210,7 +374,7 @@ acpi_rs_vendor_resource(u8 * byte_stream_buffer,
 		buffer += 1;
 	}
 
-	output_struct->id = ACPI_RSTYPE_VENDOR;
+	output_struct->type = ACPI_RSTYPE_VENDOR;
 	output_struct->data.vendor_specific.length = temp16;
 
 	for (index = 0; index < temp16; index++) {
@@ -239,7 +403,7 @@ acpi_rs_vendor_resource(u8 * byte_stream_buffer,
  *
  * FUNCTION:    acpi_rs_vendor_stream
  *
- * PARAMETERS:  linked_list             - Pointer to the resource linked list
+ * PARAMETERS:  Resource                - Pointer to the resource linked list
  *              output_buffer           - Pointer to the user's return buffer
  *              bytes_consumed          - Pointer to where the number of bytes
  *                                        used in the output_buffer is returned
@@ -252,7 +416,7 @@ acpi_rs_vendor_resource(u8 * byte_stream_buffer,
  ******************************************************************************/
 
 acpi_status
-acpi_rs_vendor_stream(struct acpi_resource *linked_list,
+acpi_rs_vendor_stream(struct acpi_resource *resource,
 		      u8 ** output_buffer, acpi_size * bytes_consumed)
 {
 	u8 *buffer = *output_buffer;
@@ -264,21 +428,21 @@ acpi_rs_vendor_stream(struct acpi_resource *linked_list,
 
 	/* Dereference the length to find if this is a large or small item. */
 
-	if (linked_list->data.vendor_specific.length > 7) {
+	if (resource->data.vendor_specific.length > 7) {
 		/* Large Item, Set the descriptor field and length bytes */
 
-		*buffer = 0x84;
+		*buffer = ACPI_RDESC_TYPE_LARGE_VENDOR;
 		buffer += 1;
 
-		temp16 = (u16) linked_list->data.vendor_specific.length;
+		temp16 = (u16) resource->data.vendor_specific.length;
 
 		ACPI_MOVE_16_TO_16(buffer, &temp16);
 		buffer += 2;
 	} else {
 		/* Small Item, Set the descriptor field */
 
-		temp8 = 0x70;
-		temp8 |= (u8) linked_list->data.vendor_specific.length;
+		temp8 = ACPI_RDESC_TYPE_SMALL_VENDOR;
+		temp8 |= (u8) resource->data.vendor_specific.length;
 
 		*buffer = temp8;
 		buffer += 1;
@@ -286,9 +450,8 @@ acpi_rs_vendor_stream(struct acpi_resource *linked_list,
 
 	/* Loop through all of the Vendor Specific fields */
 
-	for (index = 0; index < linked_list->data.vendor_specific.length;
-	     index++) {
-		temp8 = linked_list->data.vendor_specific.reserved[index];
+	for (index = 0; index < resource->data.vendor_specific.length; index++) {
+		temp8 = resource->data.vendor_specific.reserved[index];
 
 		*buffer = temp8;
 		buffer += 1;
@@ -341,7 +504,7 @@ acpi_rs_start_depend_fns_resource(u8 * byte_stream_buffer,
 
 	*bytes_consumed = (temp8 & 0x01) + 1;
 
-	output_struct->id = ACPI_RSTYPE_START_DPF;
+	output_struct->type = ACPI_RSTYPE_START_DPF;
 
 	/* Point to Byte 1 if it is used */
 
@@ -421,7 +584,7 @@ acpi_rs_end_depend_fns_resource(u8 * byte_stream_buffer,
 
 	/*  Fill out the structure */
 
-	output_struct->id = ACPI_RSTYPE_END_DPF;
+	output_struct->type = ACPI_RSTYPE_END_DPF;
 
 	/* Set the Length parameter */
 
@@ -437,7 +600,7 @@ acpi_rs_end_depend_fns_resource(u8 * byte_stream_buffer,
  *
  * FUNCTION:    acpi_rs_start_depend_fns_stream
  *
- * PARAMETERS:  linked_list             - Pointer to the resource linked list
+ * PARAMETERS:  Resource                - Pointer to the resource linked list
  *              output_buffer           - Pointer to the user's return buffer
  *              bytes_consumed          - u32 pointer that is filled with
  *                                        the number of bytes of the
@@ -451,7 +614,7 @@ acpi_rs_end_depend_fns_resource(u8 * byte_stream_buffer,
  ******************************************************************************/
 
 acpi_status
-acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list,
+acpi_rs_start_depend_fns_stream(struct acpi_resource *resource,
 				u8 ** output_buffer, acpi_size * bytes_consumed)
 {
 	u8 *buffer = *output_buffer;
@@ -460,26 +623,25 @@ acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list,
 	ACPI_FUNCTION_TRACE("rs_start_depend_fns_stream");
 
 	/*
-	 * The descriptor field is set based upon whether a byte is needed
+	 * The descriptor type field is set based upon whether a byte is needed
 	 * to contain Priority data.
 	 */
 	if (ACPI_ACCEPTABLE_CONFIGURATION ==
-	    linked_list->data.start_dpf.compatibility_priority &&
+	    resource->data.start_dpf.compatibility_priority &&
 	    ACPI_ACCEPTABLE_CONFIGURATION ==
-	    linked_list->data.start_dpf.performance_robustness) {
-		*buffer = 0x30;
+	    resource->data.start_dpf.performance_robustness) {
+		*buffer = ACPI_RDESC_TYPE_START_DEPENDENT;
 	} else {
-		*buffer = 0x31;
+		*buffer = ACPI_RDESC_TYPE_START_DEPENDENT | 0x01;
 		buffer += 1;
 
 		/* Set the Priority Byte Definition */
 
 		temp8 = 0;
-		temp8 =
-		    (u8) ((linked_list->data.start_dpf.
-			   performance_robustness & 0x03) << 2);
-		temp8 |=
-		    (linked_list->data.start_dpf.compatibility_priority & 0x03);
+		temp8 = (u8) ((resource->data.start_dpf.performance_robustness &
+			       0x03) << 2);
+		temp8 |= (resource->data.start_dpf.compatibility_priority &
+			  0x03);
 		*buffer = temp8;
 	}
 
@@ -495,7 +657,7 @@ acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list,
  *
  * FUNCTION:    acpi_rs_end_depend_fns_stream
  *
- * PARAMETERS:  linked_list             - Pointer to the resource linked list
+ * PARAMETERS:  Resource                - Pointer to the resource linked list
  *              output_buffer           - Pointer to the user's return buffer
  *              bytes_consumed          - Pointer to where the number of bytes
  *                                        used in the output_buffer is returned
@@ -508,16 +670,16 @@ acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list,
  ******************************************************************************/
 
 acpi_status
-acpi_rs_end_depend_fns_stream(struct acpi_resource *linked_list,
+acpi_rs_end_depend_fns_stream(struct acpi_resource *resource,
 			      u8 ** output_buffer, acpi_size * bytes_consumed)
 {
 	u8 *buffer = *output_buffer;
 
 	ACPI_FUNCTION_TRACE("rs_end_depend_fns_stream");
 
-	/* The descriptor field is static */
+	/* The Descriptor Type field is static */
 
-	*buffer = 0x38;
+	*buffer = ACPI_RDESC_TYPE_END_DEPENDENT;
 	buffer += 1;
 
 	/* Return the number of bytes consumed in this operation */