/******************************************************************************* * * 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 #include #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); }