| /******************************************************************************* |
| * |
| * Module Name: rsmisc - Miscellaneous 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 ("rsmisc") |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_rs_end_tag_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_end_tag_resource ( |
| u8 *byte_stream_buffer, |
| acpi_size *bytes_consumed, |
| u8 **output_buffer, |
| acpi_size *structure_size) |
| { |
| struct acpi_resource *output_struct = (void *) *output_buffer; |
| acpi_size struct_size = ACPI_RESOURCE_LENGTH; |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_end_tag_resource"); |
| |
| |
| /* |
| * The number of bytes consumed is static |
| */ |
| *bytes_consumed = 2; |
| |
| /* |
| * Fill out the structure |
| */ |
| output_struct->id = ACPI_RSTYPE_END_TAG; |
| |
| /* |
| * Set the Length parameter |
| */ |
| output_struct->length = 0; |
| |
| /* |
| * Return the final size of the structure |
| */ |
| *structure_size = struct_size; |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_rs_end_tag_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_end_tag_stream ( |
| struct acpi_resource *linked_list, |
| u8 **output_buffer, |
| acpi_size *bytes_consumed) |
| { |
| u8 *buffer = *output_buffer; |
| u8 temp8 = 0; |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_end_tag_stream"); |
| |
| |
| /* |
| * The descriptor field is static |
| */ |
| *buffer = 0x79; |
| buffer += 1; |
| |
| /* |
| * Set the Checksum - zero means that the resource data is treated as if |
| * the checksum operation succeeded (ACPI Spec 1.0b Section 6.4.2.8) |
| */ |
| temp8 = 0; |
| |
| *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_vendor_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_vendor_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; |
| u8 index; |
| acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_vendor); |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_vendor_resource"); |
| |
| |
| /* |
| * Dereference the Descriptor to find if this is a large or small item. |
| */ |
| temp8 = *buffer; |
| |
| if (temp8 & 0x80) { |
| /* |
| * Large Item, point to the length field |
| */ |
| buffer += 1; |
| |
| /* Dereference */ |
| |
| ACPI_MOVE_16_TO_16 (&temp16, buffer); |
| |
| /* Calculate bytes consumed */ |
| |
| *bytes_consumed = (acpi_size) temp16 + 3; |
| |
| /* Point to the first vendor byte */ |
| |
| buffer += 2; |
| } |
| else { |
| /* |
| * Small Item, dereference the size |
| */ |
| temp16 = (u8)(*buffer & 0x07); |
| |
| /* Calculate bytes consumed */ |
| |
| *bytes_consumed = (acpi_size) temp16 + 1; |
| |
| /* Point to the first vendor byte */ |
| |
| buffer += 1; |
| } |
| |
| output_struct->id = ACPI_RSTYPE_VENDOR; |
| output_struct->data.vendor_specific.length = temp16; |
| |
| for (index = 0; index < temp16; index++) { |
| output_struct->data.vendor_specific.reserved[index] = *buffer; |
| buffer += 1; |
| } |
| |
| /* |
| * In order for the struct_size to fall on a 32-bit boundary, |
| * calculate the length of the vendor string and expand the |
| * struct_size to the next 32-bit boundary. |
| */ |
| struct_size += ACPI_ROUND_UP_to_32_bITS (temp16); |
| |
| /* |
| * 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_vendor_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_vendor_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_vendor_stream"); |
| |
| |
| /* |
| * Dereference the length to find if this is a large or small item. |
| */ |
| if(linked_list->data.vendor_specific.length > 7) { |
| /* |
| * Large Item, Set the descriptor field and length bytes |
| */ |
| *buffer = 0x84; |
| buffer += 1; |
| |
| temp16 = (u16) linked_list->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; |
| |
| *buffer = temp8; |
| buffer += 1; |
| } |
| |
| /* |
| * 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]; |
| |
| *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_start_depend_fns_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_start_depend_fns_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; |
| acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_start_dpf); |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_start_depend_fns_resource"); |
| |
| |
| /* |
| * The number of bytes consumed are contained in the descriptor (Bits:0-1) |
| */ |
| temp8 = *buffer; |
| |
| *bytes_consumed = (temp8 & 0x01) + 1; |
| |
| output_struct->id = ACPI_RSTYPE_START_DPF; |
| |
| /* |
| * Point to Byte 1 if it is used |
| */ |
| if (2 == *bytes_consumed) { |
| buffer += 1; |
| temp8 = *buffer; |
| |
| /* |
| * Check Compatibility priority |
| */ |
| output_struct->data.start_dpf.compatibility_priority = temp8 & 0x03; |
| |
| if (3 == output_struct->data.start_dpf.compatibility_priority) { |
| return_ACPI_STATUS (AE_AML_BAD_RESOURCE_VALUE); |
| } |
| |
| /* |
| * Check Performance/Robustness preference |
| */ |
| output_struct->data.start_dpf.performance_robustness = (temp8 >> 2) & 0x03; |
| |
| if (3 == output_struct->data.start_dpf.performance_robustness) { |
| return_ACPI_STATUS (AE_AML_BAD_RESOURCE_VALUE); |
| } |
| } |
| else { |
| output_struct->data.start_dpf.compatibility_priority = |
| ACPI_ACCEPTABLE_CONFIGURATION; |
| |
| output_struct->data.start_dpf.performance_robustness = |
| ACPI_ACCEPTABLE_CONFIGURATION; |
| } |
| |
| /* |
| * 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_end_depend_fns_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_end_depend_fns_resource ( |
| u8 *byte_stream_buffer, |
| acpi_size *bytes_consumed, |
| u8 **output_buffer, |
| acpi_size *structure_size) |
| { |
| struct acpi_resource *output_struct = (void *) *output_buffer; |
| acpi_size struct_size = ACPI_RESOURCE_LENGTH; |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_end_depend_fns_resource"); |
| |
| |
| /* |
| * The number of bytes consumed is static |
| */ |
| *bytes_consumed = 1; |
| |
| /* |
| * Fill out the structure |
| */ |
| output_struct->id = ACPI_RSTYPE_END_DPF; |
| |
| /* |
| * 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_start_depend_fns_stream |
| * |
| * PARAMETERS: linked_list - 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 |
| * output_buffer used |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Take the linked list resource structure and fills in the |
| * the appropriate bytes in a byte stream |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_rs_start_depend_fns_stream ( |
| struct acpi_resource *linked_list, |
| u8 **output_buffer, |
| acpi_size *bytes_consumed) |
| { |
| u8 *buffer = *output_buffer; |
| u8 temp8 = 0; |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_start_depend_fns_stream"); |
| |
| |
| /* |
| * The descriptor 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 && |
| ACPI_ACCEPTABLE_CONFIGURATION == |
| linked_list->data.start_dpf.performance_robustness) { |
| *buffer = 0x30; |
| } |
| else { |
| *buffer = 0x31; |
| 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); |
| *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_end_depend_fns_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_end_depend_fns_stream ( |
| struct acpi_resource *linked_list, |
| u8 **output_buffer, |
| acpi_size *bytes_consumed) |
| { |
| u8 *buffer = *output_buffer; |
| |
| |
| ACPI_FUNCTION_TRACE ("rs_end_depend_fns_stream"); |
| |
| |
| /* |
| * The descriptor field is static |
| */ |
| *buffer = 0x38; |
| buffer += 1; |
| |
| /* |
| * Return the number of bytes consumed in this operation |
| */ |
| *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer); |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
