| /******************************************************************************* |
| * |
| * Module Name: rsio - IO and DMA resource descriptors |
| * |
| ******************************************************************************/ |
| |
| /* |
| * 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 ("rsio") |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_rs_io_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_io_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 = 0; |
| u8 temp8 = 0; |
| acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_io); |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_io_resource"); |
| |
| |
| /* |
| * The number of bytes consumed are Constant |
| */ |
| *bytes_consumed = 8; |
| |
| output_struct->id = ACPI_RSTYPE_IO; |
| |
| /* |
| * Check Decode |
| */ |
| buffer += 1; |
| temp8 = *buffer; |
| |
| output_struct->data.io.io_decode = temp8 & 0x01; |
| |
| /* |
| * Check min_base Address |
| */ |
| buffer += 1; |
| ACPI_MOVE_16_TO_16 (&temp16, buffer); |
| |
| output_struct->data.io.min_base_address = temp16; |
| |
| /* |
| * Check max_base Address |
| */ |
| buffer += 2; |
| ACPI_MOVE_16_TO_16 (&temp16, buffer); |
| |
| output_struct->data.io.max_base_address = temp16; |
| |
| /* |
| * Check Base alignment |
| */ |
| buffer += 2; |
| temp8 = *buffer; |
| |
| output_struct->data.io.alignment = temp8; |
| |
| /* |
| * Check range_length |
| */ |
| buffer += 1; |
| temp8 = *buffer; |
| |
| output_struct->data.io.range_length = temp8; |
| |
| /* |
| * 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_fixed_io_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_fixed_io_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 = 0; |
| u8 temp8 = 0; |
| acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_io); |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_fixed_io_resource"); |
| |
| |
| /* |
| * The number of bytes consumed are Constant |
| */ |
| *bytes_consumed = 4; |
| |
| output_struct->id = ACPI_RSTYPE_FIXED_IO; |
| |
| /* |
| * Check Range Base Address |
| */ |
| buffer += 1; |
| ACPI_MOVE_16_TO_16 (&temp16, buffer); |
| |
| output_struct->data.fixed_io.base_address = temp16; |
| |
| /* |
| * Check range_length |
| */ |
| buffer += 2; |
| temp8 = *buffer; |
| |
| output_struct->data.fixed_io.range_length = temp8; |
| |
| /* |
| * 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_io_stream |
| * |
| * PARAMETERS: linked_list - 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_io_stream ( |
| struct acpi_resource *linked_list, |
| u8 **output_buffer, |
| acpi_size *bytes_consumed) |
| { |
| u8 *buffer = *output_buffer; |
| u16 temp16 = 0; |
| u8 temp8 = 0; |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_io_stream"); |
| |
| |
| /* |
| * The descriptor field is static |
| */ |
| *buffer = 0x47; |
| buffer += 1; |
| |
| /* |
| * Io Information Byte |
| */ |
| temp8 = (u8) (linked_list->data.io.io_decode & 0x01); |
| |
| *buffer = temp8; |
| buffer += 1; |
| |
| /* |
| * Set the Range minimum base address |
| */ |
| temp16 = (u16) linked_list->data.io.min_base_address; |
| |
| ACPI_MOVE_16_TO_16 (buffer, &temp16); |
| buffer += 2; |
| |
| /* |
| * Set the Range maximum base address |
| */ |
| temp16 = (u16) linked_list->data.io.max_base_address; |
| |
| ACPI_MOVE_16_TO_16 (buffer, &temp16); |
| buffer += 2; |
| |
| /* |
| * Set the base alignment |
| */ |
| temp8 = (u8) linked_list->data.io.alignment; |
| |
| *buffer = temp8; |
| buffer += 1; |
| |
| /* |
| * Set the range length |
| */ |
| temp8 = (u8) linked_list->data.io.range_length; |
| |
| *buffer = temp8; |
| buffer += 1; |
| |
| /* |
| * 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_fixed_io_stream |
| * |
| * PARAMETERS: linked_list - 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_fixed_io_stream ( |
| struct acpi_resource *linked_list, |
| u8 **output_buffer, |
| acpi_size *bytes_consumed) |
| { |
| u8 *buffer = *output_buffer; |
| u16 temp16 = 0; |
| u8 temp8 = 0; |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_fixed_io_stream"); |
| |
| |
| /* |
| * The descriptor field is static |
| */ |
| *buffer = 0x4B; |
| |
| buffer += 1; |
| |
| /* |
| * Set the Range base address |
| */ |
| temp16 = (u16) linked_list->data.fixed_io.base_address; |
| |
| ACPI_MOVE_16_TO_16 (buffer, &temp16); |
| buffer += 2; |
| |
| /* |
| * Set the range length |
| */ |
| temp8 = (u8) linked_list->data.fixed_io.range_length; |
| |
| *buffer = temp8; |
| buffer += 1; |
| |
| /* |
| * 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_dma_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_dma_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; |
| u8 temp8 = 0; |
| u8 index; |
| u8 i; |
| acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_dma); |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_dma_resource"); |
| |
| |
| /* |
| * The number of bytes consumed are Constant |
| */ |
| *bytes_consumed = 3; |
| output_struct->id = ACPI_RSTYPE_DMA; |
| |
| /* |
| * Point to the 8-bits of Byte 1 |
| */ |
| buffer += 1; |
| temp8 = *buffer; |
| |
| /* Decode the DMA channel bits */ |
| |
| for (i = 0, index = 0; index < 8; index++) { |
| if ((temp8 >> index) & 0x01) { |
| output_struct->data.dma.channels[i] = index; |
| i++; |
| } |
| } |
| |
| /* Zero DMA channels is valid */ |
| |
| output_struct->data.dma.number_of_channels = i; |
| if (i > 0) { |
| /* |
| * Calculate the structure size based upon the number of interrupts |
| */ |
| struct_size += ((acpi_size) i - 1) * 4; |
| } |
| |
| /* |
| * Point to Byte 2 |
| */ |
| buffer += 1; |
| temp8 = *buffer; |
| |
| /* |
| * Check for transfer preference (Bits[1:0]) |
| */ |
| output_struct->data.dma.transfer = temp8 & 0x03; |
| |
| if (0x03 == output_struct->data.dma.transfer) { |
| ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid DMA.Transfer preference (3)\n")); |
| return_ACPI_STATUS (AE_BAD_DATA); |
| } |
| |
| /* |
| * Get bus master preference (Bit[2]) |
| */ |
| output_struct->data.dma.bus_master = (temp8 >> 2) & 0x01; |
| |
| /* |
| * Get channel speed support (Bits[6:5]) |
| */ |
| output_struct->data.dma.type = (temp8 >> 5) & 0x03; |
| |
| /* |
| * 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_dma_stream |
| * |
| * PARAMETERS: linked_list - 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_dma_stream ( |
| struct acpi_resource *linked_list, |
| u8 **output_buffer, |
| acpi_size *bytes_consumed) |
| { |
| u8 *buffer = *output_buffer; |
| u16 temp16 = 0; |
| u8 temp8 = 0; |
| u8 index; |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_dma_stream"); |
| |
| |
| /* |
| * The descriptor field is static |
| */ |
| *buffer = 0x2A; |
| buffer += 1; |
| temp8 = 0; |
| |
| /* |
| * Loop through all of the Channels and set the mask bits |
| */ |
| for (index = 0; |
| index < linked_list->data.dma.number_of_channels; |
| index++) { |
| temp16 = (u16) linked_list->data.dma.channels[index]; |
| temp8 |= 0x1 << temp16; |
| } |
| |
| *buffer = temp8; |
| buffer += 1; |
| |
| /* |
| * Set the DMA Info |
| */ |
| temp8 = (u8) ((linked_list->data.dma.type & 0x03) << 5); |
| temp8 |= ((linked_list->data.dma.bus_master & 0x01) << 2); |
| temp8 |= (linked_list->data.dma.transfer & 0x03); |
| |
| *buffer = temp8; |
| buffer += 1; |
| |
| /* |
| * Return the number of bytes consumed in this operation |
| */ |
| *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer); |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
