******************************************************************************/
/*
- * Copyright (C) 2000 - 2005, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
/*******************************************************************************
*
- * FUNCTION: acpi_rs_get_resource_type
+ * FUNCTION: acpi_rs_convert_aml_to_resources
*
- * PARAMETERS: resource_start_byte - Byte 0 of a resource descriptor
- *
- * RETURN: The Resource Type with no extraneous bits
- *
- * DESCRIPTION: Extract the Resource Type/Name from the first byte of
- * a resource descriptor.
- *
- ******************************************************************************/
-u8 acpi_rs_get_resource_type(u8 resource_start_byte)
-{
-
- ACPI_FUNCTION_ENTRY();
-
- /* Determine if this is a small or large resource */
-
- switch (resource_start_byte & ACPI_RDESC_TYPE_MASK) {
- case ACPI_RDESC_TYPE_SMALL:
-
- /* Small Resource Type -- Only bits 6:3 are valid */
-
- return ((u8) (resource_start_byte & ACPI_RDESC_SMALL_MASK));
-
- case ACPI_RDESC_TYPE_LARGE:
-
- /* Large Resource Type -- All bits are valid */
-
- return (resource_start_byte);
-
- default:
- /* Invalid type */
- break;
- }
-
- return (0xFF);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_rs_byte_stream_to_list
- *
- * PARAMETERS: byte_stream_buffer - Pointer to the resource byte stream
- * byte_stream_buffer_length - Length of byte_stream_buffer
- * output_buffer - Pointer to the buffer that will
+ * PARAMETERS: acpi_walk_aml_callback
+ * resource_ptr - Pointer to the buffer that will
* contain the output structures
*
* RETURN: Status
*
- * DESCRIPTION: Takes the resource byte stream and parses it, creating a
- * linked list of resources in the caller's output buffer
+ * DESCRIPTION: Convert an AML resource to an internal representation of the
+ * resource that is aligned and easier to access.
*
******************************************************************************/
-
acpi_status
-acpi_rs_byte_stream_to_list(u8 * byte_stream_buffer,
- u32 byte_stream_buffer_length, u8 * output_buffer)
+acpi_rs_convert_aml_to_resources(u8 * aml,
+ u32 length,
+ u32 offset, u8 resource_index, void **context)
{
- acpi_status status;
- acpi_size bytes_parsed = 0;
- u8 resource_type = 0;
- acpi_size bytes_consumed = 0;
- u8 *buffer = output_buffer;
- acpi_size structure_size = 0;
- u8 end_tag_processed = FALSE;
+ struct acpi_resource **resource_ptr =
+ ACPI_CAST_INDIRECT_PTR(struct acpi_resource, context);
struct acpi_resource *resource;
+ acpi_status status;
- ACPI_FUNCTION_TRACE("rs_byte_stream_to_list");
-
- while (bytes_parsed < byte_stream_buffer_length && !end_tag_processed) {
- /* The next byte in the stream is the resource type */
-
- resource_type = acpi_rs_get_resource_type(*byte_stream_buffer);
-
- switch (resource_type) {
- case ACPI_RDESC_TYPE_MEMORY_24:
- /*
- * 24-Bit Memory Resource
- */
- status = acpi_rs_memory24_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_LARGE_VENDOR:
- /*
- * Vendor Defined Resource
- */
- status = acpi_rs_vendor_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_MEMORY_32:
- /*
- * 32-Bit Memory Range Resource
- */
- status =
- acpi_rs_memory32_range_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
- /*
- * 32-Bit Fixed Memory Resource
- */
- status =
- acpi_rs_fixed_memory32_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
- case ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE:
- /*
- * 64-Bit Address Resource
- */
- status = acpi_rs_address64_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
- /*
- * 32-Bit Address Resource
- */
- status = acpi_rs_address32_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
- /*
- * 16-Bit Address Resource
- */
- status = acpi_rs_address16_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
- /*
- * Extended IRQ
- */
- status =
- acpi_rs_extended_irq_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_IRQ_FORMAT:
- /*
- * IRQ Resource
- */
- status = acpi_rs_irq_resource(byte_stream_buffer,
- &bytes_consumed, &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_DMA_FORMAT:
- /*
- * DMA Resource
- */
- status = acpi_rs_dma_resource(byte_stream_buffer,
- &bytes_consumed, &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_START_DEPENDENT:
- /*
- * Start Dependent Functions Resource
- */
- status =
- acpi_rs_start_depend_fns_resource
- (byte_stream_buffer, &bytes_consumed, &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_END_DEPENDENT:
- /*
- * End Dependent Functions Resource
- */
- status =
- acpi_rs_end_depend_fns_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_IO_PORT:
- /*
- * IO Port Resource
- */
- status = acpi_rs_io_resource(byte_stream_buffer,
- &bytes_consumed, &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_FIXED_IO_PORT:
- /*
- * Fixed IO Port Resource
- */
- status = acpi_rs_fixed_io_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_SMALL_VENDOR:
- /*
- * Vendor Specific Resource
- */
- status = acpi_rs_vendor_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- case ACPI_RDESC_TYPE_END_TAG:
- /*
- * End Tag
- */
- end_tag_processed = TRUE;
- status = acpi_rs_end_tag_resource(byte_stream_buffer,
- &bytes_consumed,
- &buffer,
- &structure_size);
- break;
-
- default:
- /*
- * Invalid/Unknown resource type
- */
- status = AE_AML_INVALID_RESOURCE_TYPE;
- break;
- }
-
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* Update the return value and counter */
-
- bytes_parsed += bytes_consumed;
-
- /* Set the byte stream to point to the next resource */
-
- byte_stream_buffer += bytes_consumed;
+ ACPI_FUNCTION_TRACE(rs_convert_aml_to_resources);
- /* Set the Buffer to the next structure */
+ /*
+ * Check that the input buffer and all subsequent pointers into it
+ * are aligned on a native word boundary. Most important on IA64
+ */
+ resource = *resource_ptr;
+ if (ACPI_IS_MISALIGNED(resource)) {
+ ACPI_WARNING((AE_INFO,
+ "Misaligned resource pointer %p", resource));
+ }
- resource = ACPI_CAST_PTR(struct acpi_resource, buffer);
- resource->length =
- (u32) ACPI_ALIGN_RESOURCE_SIZE(resource->length);
- buffer += ACPI_ALIGN_RESOURCE_SIZE(structure_size);
+ /* Convert the AML byte stream resource to a local resource struct */
+
+ status =
+ acpi_rs_convert_aml_to_resource(resource,
+ ACPI_CAST_PTR(union aml_resource,
+ aml),
+ acpi_gbl_get_resource_dispatch
+ [resource_index]);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Could not convert AML resource (Type %X)",
+ *aml));
+ return_ACPI_STATUS(status);
}
- /* Check the reason for exiting the while loop */
+ ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
+ "Type %.2X, AmlLength %.2X InternalLength %.2X\n",
+ acpi_ut_get_resource_type(aml), length,
+ resource->length));
- if (!end_tag_processed) {
- return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
- }
+ /* Point to the next structure in the output buffer */
+ *resource_ptr = ACPI_ADD_PTR(void, resource, resource->length);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_list_to_byte_stream
+ * FUNCTION: acpi_rs_convert_resources_to_aml
*
- * PARAMETERS: linked_list - Pointer to the resource linked list
- * byte_steam_size_needed - Calculated size of the byte stream
- * needed from calling
- * acpi_rs_get_byte_stream_length()
- * The size of the output_buffer is
- * guaranteed to be >=
- * byte_stream_size_needed
- * output_buffer - Pointer to the buffer that will
- * contain the byte stream
+ * PARAMETERS: Resource - Pointer to the resource linked list
+ * aml_size_needed - Calculated size of the byte stream
+ * needed from calling acpi_rs_get_aml_length()
+ * The size of the output_buffer is
+ * guaranteed to be >= aml_size_needed
+ * output_buffer - Pointer to the buffer that will
+ * contain the byte stream
*
* RETURN: Status
*
******************************************************************************/
acpi_status
-acpi_rs_list_to_byte_stream(struct acpi_resource *linked_list,
- acpi_size byte_stream_size_needed,
- u8 * output_buffer)
+acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
+ acpi_size aml_size_needed, u8 * output_buffer)
{
+ u8 *aml = output_buffer;
+ u8 *end_aml = output_buffer + aml_size_needed;
acpi_status status;
- u8 *buffer = output_buffer;
- acpi_size bytes_consumed = 0;
- u8 done = FALSE;
-
- ACPI_FUNCTION_TRACE("rs_list_to_byte_stream");
-
- while (!done) {
- switch (linked_list->id) {
- case ACPI_RSTYPE_IRQ:
- /*
- * IRQ Resource
- */
- status =
- acpi_rs_irq_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
- case ACPI_RSTYPE_DMA:
- /*
- * DMA Resource
- */
- status =
- acpi_rs_dma_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ ACPI_FUNCTION_TRACE(rs_convert_resources_to_aml);
- case ACPI_RSTYPE_START_DPF:
- /*
- * Start Dependent Functions Resource
- */
- status = acpi_rs_start_depend_fns_stream(linked_list,
- &buffer,
- &bytes_consumed);
- break;
+ /* Walk the resource descriptor list, convert each descriptor */
- case ACPI_RSTYPE_END_DPF:
- /*
- * End Dependent Functions Resource
- */
- status = acpi_rs_end_depend_fns_stream(linked_list,
- &buffer,
- &bytes_consumed);
- break;
+ while (aml < end_aml) {
- case ACPI_RSTYPE_IO:
- /*
- * IO Port Resource
- */
- status =
- acpi_rs_io_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ /* Validate the (internal) Resource Type */
- case ACPI_RSTYPE_FIXED_IO:
- /*
- * Fixed IO Port Resource
- */
- status =
- acpi_rs_fixed_io_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_VENDOR:
- /*
- * Vendor Defined Resource
- */
- status =
- acpi_rs_vendor_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
-
- case ACPI_RSTYPE_END_TAG:
- /*
- * End Tag
- */
- status =
- acpi_rs_end_tag_stream(linked_list, &buffer,
- &bytes_consumed);
-
- /* An End Tag indicates the end of the Resource Template */
-
- done = TRUE;
- break;
-
- case ACPI_RSTYPE_MEM24:
- /*
- * 24-Bit Memory Resource
- */
- status =
- acpi_rs_memory24_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
+ ACPI_ERROR((AE_INFO,
+ "Invalid descriptor type (%X) in resource list",
+ resource->type));
+ return_ACPI_STATUS(AE_BAD_DATA);
+ }
- case ACPI_RSTYPE_MEM32:
- /*
- * 32-Bit Memory Range Resource
- */
- status =
- acpi_rs_memory32_range_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ /* Perform the conversion */
- case ACPI_RSTYPE_FIXED_MEM32:
- /*
- * 32-Bit Fixed Memory Resource
- */
- status =
- acpi_rs_fixed_memory32_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ status = acpi_rs_convert_resource_to_aml(resource,
+ ACPI_CAST_PTR(union
+ aml_resource,
+ aml),
+ acpi_gbl_set_resource_dispatch
+ [resource->type]);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Could not convert resource (type %X) to AML",
+ resource->type));
+ return_ACPI_STATUS(status);
+ }
- case ACPI_RSTYPE_ADDRESS16:
- /*
- * 16-Bit Address Descriptor Resource
- */
- status = acpi_rs_address16_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ /* Perform final sanity check on the new AML resource descriptor */
- case ACPI_RSTYPE_ADDRESS32:
- /*
- * 32-Bit Address Descriptor Resource
- */
- status = acpi_rs_address32_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ status =
+ acpi_ut_validate_resource(ACPI_CAST_PTR
+ (union aml_resource, aml), NULL);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
- case ACPI_RSTYPE_ADDRESS64:
- /*
- * 64-Bit Address Descriptor Resource
- */
- status = acpi_rs_address64_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ /* Check for end-of-list, normal exit */
- case ACPI_RSTYPE_EXT_IRQ:
- /*
- * Extended IRQ Resource
- */
- status =
- acpi_rs_extended_irq_stream(linked_list, &buffer,
- &bytes_consumed);
- break;
+ if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
- default:
- /*
- * If we get here, everything is out of sync,
- * so exit with an error
- */
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Invalid descriptor type (%X) in resource list\n",
- linked_list->id));
- status = AE_BAD_DATA;
- break;
- }
+ /* An End Tag indicates the end of the input Resource Template */
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ return_ACPI_STATUS(AE_OK);
}
- /* Set the Buffer to point to the open byte */
-
- buffer += bytes_consumed;
+ /*
+ * Extract the total length of the new descriptor and set the
+ * Aml to point to the next (output) resource descriptor
+ */
+ aml += acpi_ut_get_descriptor_length(aml);
- /* Point to the next object */
+ /* Point to the next input resource descriptor */
- linked_list = ACPI_PTR_ADD(struct acpi_resource,
- linked_list, linked_list->length);
+ resource =
+ ACPI_ADD_PTR(struct acpi_resource, resource,
+ resource->length);
}
- return_ACPI_STATUS(AE_OK);
+ /* Completed buffer, but did not find an end_tag resource descriptor */
+
+ return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
git.openpandora.org / pandora-kernel.git / blobdiff