| /******************************************************************************* |
| * |
| * Module Name: rslist - Linked list utilities |
| * |
| ******************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2005, R. Byron Moore |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acresrc.h> |
| |
| #define _COMPONENT ACPI_RESOURCES |
| ACPI_MODULE_NAME ("rslist") |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_rs_get_resource_type |
| * |
| * PARAMETERS: resource_start_byte - Byte 0 of a resource descriptor |
| * |
| * RETURN: The Resource Type (Name) 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: |
| /* No other types of resource descriptor */ |
| 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 |
| * 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 |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_rs_byte_stream_to_list ( |
| u8 *byte_stream_buffer, |
| u32 byte_stream_buffer_length, |
| u8 *output_buffer) |
| { |
| 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; |
| |
| 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; |
| |
| /* |
| * Set the Buffer to the next structure |
| */ |
| resource = ACPI_CAST_PTR (struct acpi_resource, buffer); |
| resource->length = (u32) ACPI_ALIGN_RESOURCE_SIZE (resource->length); |
| buffer += ACPI_ALIGN_RESOURCE_SIZE (structure_size); |
| |
| } /* end while */ |
| |
| /* |
| * Check the reason for exiting the while loop |
| */ |
| if (!end_tag_processed) { |
| return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG); |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_rs_list_to_byte_stream |
| * |
| * 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 |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Takes the resource linked list and parses it, creating a |
| * byte stream of resources in the caller's output buffer |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_rs_list_to_byte_stream ( |
| struct acpi_resource *linked_list, |
| acpi_size byte_stream_size_needed, |
| u8 *output_buffer) |
| { |
| 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; |
| |
| case ACPI_RSTYPE_START_DPF: |
| /* |
| * Start Dependent Functions Resource |
| */ |
| status = acpi_rs_start_depend_fns_stream (linked_list, |
| &buffer, &bytes_consumed); |
| break; |
| |
| case ACPI_RSTYPE_END_DPF: |
| /* |
| * End Dependent Functions Resource |
| */ |
| status = acpi_rs_end_depend_fns_stream (linked_list, |
| &buffer, &bytes_consumed); |
| break; |
| |
| case ACPI_RSTYPE_IO: |
| /* |
| * IO Port Resource |
| */ |
| status = acpi_rs_io_stream (linked_list, &buffer, &bytes_consumed); |
| break; |
| |
| 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; |
| |
| case ACPI_RSTYPE_MEM32: |
| /* |
| * 32-Bit Memory Range Resource |
| */ |
| status = acpi_rs_memory32_range_stream (linked_list, &buffer, |
| &bytes_consumed); |
| break; |
| |
| case ACPI_RSTYPE_FIXED_MEM32: |
| /* |
| * 32-Bit Fixed Memory Resource |
| */ |
| status = acpi_rs_fixed_memory32_stream (linked_list, &buffer, |
| &bytes_consumed); |
| break; |
| |
| case ACPI_RSTYPE_ADDRESS16: |
| /* |
| * 16-Bit Address Descriptor Resource |
| */ |
| status = acpi_rs_address16_stream (linked_list, &buffer, |
| &bytes_consumed); |
| break; |
| |
| case ACPI_RSTYPE_ADDRESS32: |
| /* |
| * 32-Bit Address Descriptor Resource |
| */ |
| status = acpi_rs_address32_stream (linked_list, &buffer, |
| &bytes_consumed); |
| break; |
| |
| case ACPI_RSTYPE_ADDRESS64: |
| /* |
| * 64-Bit Address Descriptor Resource |
| */ |
| status = acpi_rs_address64_stream (linked_list, &buffer, |
| &bytes_consumed); |
| break; |
| |
| case ACPI_RSTYPE_EXT_IRQ: |
| /* |
| * Extended IRQ Resource |
| */ |
| status = acpi_rs_extended_irq_stream (linked_list, &buffer, |
| &bytes_consumed); |
| break; |
| |
| 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; |
| |
| } /* switch (linked_list->Id) */ |
| |
| if (ACPI_FAILURE (status)) { |
| return_ACPI_STATUS (status); |
| } |
| |
| /* |
| * Set the Buffer to point to the open byte |
| */ |
| buffer += bytes_consumed; |
| |
| /* |
| * Point to the next object |
| */ |
| linked_list = ACPI_PTR_ADD (struct acpi_resource, |
| linked_list, linked_list->length); |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
