Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * |
| 3 | * Module Name: rscreate - Create resource lists/tables |
| 4 | * |
| 5 | ******************************************************************************/ |
| 6 | |
| 7 | /* |
Len Brown | 75a44ce | 2008-04-23 23:00:13 -0400 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2008, Intel Corp. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <acpi/acpi.h> |
Len Brown | e2f7a77 | 2009-01-09 00:30:03 -0500 | [diff] [blame] | 45 | #include "accommon.h" |
| 46 | #include "acresrc.h" |
| 47 | #include "acnamesp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | #define _COMPONENT ACPI_RESOURCES |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 50 | ACPI_MODULE_NAME("rscreate") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | /******************************************************************************* |
| 53 | * |
| 54 | * FUNCTION: acpi_rs_create_resource_list |
| 55 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 56 | * PARAMETERS: aml_buffer - Pointer to the resource byte stream |
| 57 | * output_buffer - Pointer to the user's buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 59 | * RETURN: Status: AE_OK if okay, else a valid acpi_status code |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | * If output_buffer is not large enough, output_buffer_length |
| 61 | * indicates how large output_buffer should be, else it |
| 62 | * indicates how may u8 elements of output_buffer are valid. |
| 63 | * |
| 64 | * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method |
| 65 | * execution and parses the stream to create a linked list |
| 66 | * of device resources. |
| 67 | * |
| 68 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | acpi_status |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 70 | acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 71 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | { |
| 73 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 74 | acpi_status status; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 75 | u8 *aml_start; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 76 | acpi_size list_size_needed = 0; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 77 | u32 aml_buffer_length; |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 78 | void *resource; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 80 | ACPI_FUNCTION_TRACE(rs_create_resource_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 82 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlBuffer = %p\n", aml_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 84 | /* Params already validated, so we don't re-validate here */ |
| 85 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 86 | aml_buffer_length = aml_buffer->buffer.length; |
| 87 | aml_start = aml_buffer->buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | /* |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 90 | * Pass the aml_buffer into a module that can calculate |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | * the buffer size needed for the linked list |
| 92 | */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 93 | status = acpi_rs_get_list_length(aml_start, aml_buffer_length, |
| 94 | &list_size_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 96 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 97 | status, (u32) list_size_needed)); |
| 98 | if (ACPI_FAILURE(status)) { |
| 99 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | /* Validate/Allocate/Clear caller buffer */ |
| 103 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 104 | status = acpi_ut_initialize_buffer(output_buffer, list_size_needed); |
| 105 | if (ACPI_FAILURE(status)) { |
| 106 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | /* Do the conversion */ |
| 110 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 111 | resource = output_buffer->pointer; |
| 112 | status = acpi_ut_walk_aml_resources(aml_start, aml_buffer_length, |
| 113 | acpi_rs_convert_aml_to_resources, |
| 114 | &resource); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 115 | if (ACPI_FAILURE(status)) { |
| 116 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | } |
| 118 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 119 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 120 | output_buffer->pointer, (u32) output_buffer->length)); |
| 121 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | } |
| 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | /******************************************************************************* |
| 125 | * |
| 126 | * FUNCTION: acpi_rs_create_pci_routing_table |
| 127 | * |
Frederik Schwarzer | 0211a9c | 2008-12-29 22:14:56 +0100 | [diff] [blame] | 128 | * PARAMETERS: package_object - Pointer to a union acpi_operand_object |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | * package |
| 130 | * output_buffer - Pointer to the user's buffer |
| 131 | * |
| 132 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. |
| 133 | * If the output_buffer is too small, the error will be |
| 134 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point |
| 135 | * to the size buffer needed. |
| 136 | * |
| 137 | * DESCRIPTION: Takes the union acpi_operand_object package and creates a |
| 138 | * linked list of PCI interrupt descriptions |
| 139 | * |
| 140 | * NOTE: It is the caller's responsibility to ensure that the start of the |
| 141 | * output buffer is aligned properly (if necessary). |
| 142 | * |
| 143 | ******************************************************************************/ |
| 144 | |
| 145 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 146 | acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, |
| 147 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 149 | u8 *buffer; |
| 150 | union acpi_operand_object **top_object_list; |
| 151 | union acpi_operand_object **sub_object_list; |
| 152 | union acpi_operand_object *obj_desc; |
| 153 | acpi_size buffer_size_needed = 0; |
| 154 | u32 number_of_elements; |
| 155 | u32 index; |
| 156 | struct acpi_pci_routing_table *user_prt; |
| 157 | struct acpi_namespace_node *node; |
| 158 | acpi_status status; |
| 159 | struct acpi_buffer path_buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 161 | ACPI_FUNCTION_TRACE(rs_create_pci_routing_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
| 163 | /* Params already validated, so we don't re-validate here */ |
| 164 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 165 | /* Get the required buffer length */ |
| 166 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 167 | status = acpi_rs_get_pci_routing_table_length(package_object, |
| 168 | &buffer_size_needed); |
| 169 | if (ACPI_FAILURE(status)) { |
| 170 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | } |
| 172 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 173 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "BufferSizeNeeded = %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 174 | (u32) buffer_size_needed)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | |
| 176 | /* Validate/Allocate/Clear caller buffer */ |
| 177 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 178 | status = acpi_ut_initialize_buffer(output_buffer, buffer_size_needed); |
| 179 | if (ACPI_FAILURE(status)) { |
| 180 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | /* |
Bob Moore | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 184 | * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a |
| 185 | * package that in turn contains an acpi_integer Address, a u8 Pin, |
| 186 | * a Name, and a u8 source_index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 188 | top_object_list = package_object->package.elements; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | number_of_elements = package_object->package.count; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 190 | buffer = output_buffer->pointer; |
| 191 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
| 193 | for (index = 0; index < number_of_elements; index++) { |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 194 | int source_name_index = 2; |
| 195 | int source_index_index = 3; |
| 196 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | /* |
| 198 | * Point user_prt past this current structure |
| 199 | * |
| 200 | * NOTE: On the first iteration, user_prt->Length will |
| 201 | * be zero because we cleared the return buffer earlier |
| 202 | */ |
| 203 | buffer += user_prt->length; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 204 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
| 206 | /* |
| 207 | * Fill in the Length field with the information we have at this point. |
| 208 | * The minus four is to subtract the size of the u8 Source[4] member |
| 209 | * because it is added below. |
| 210 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 211 | user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 213 | /* Each element of the top-level package must also be a package */ |
| 214 | |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame^] | 215 | if ((*top_object_list)->common.type != ACPI_TYPE_PACKAGE) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 216 | ACPI_ERROR((AE_INFO, |
| 217 | "(PRT[%X]) Need sub-package, found %s", |
| 218 | index, |
| 219 | acpi_ut_get_object_type_name |
| 220 | (*top_object_list))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 221 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | /* Each sub-package must be of length 4 */ |
| 225 | |
| 226 | if ((*top_object_list)->package.count != 4) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 227 | ACPI_ERROR((AE_INFO, |
| 228 | "(PRT[%X]) Need package of length 4, found length %d", |
| 229 | index, (*top_object_list)->package.count)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 230 | return_ACPI_STATUS(AE_AML_PACKAGE_LIMIT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | } |
| 232 | |
| 233 | /* |
| 234 | * Dereference the sub-package. |
| 235 | * The sub_object_list will now point to an array of the four IRQ |
| 236 | * elements: [Address, Pin, Source, source_index] |
| 237 | */ |
| 238 | sub_object_list = (*top_object_list)->package.elements; |
| 239 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 240 | /* 1) First subobject: Dereference the PRT.Address */ |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | obj_desc = sub_object_list[0]; |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame^] | 243 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 244 | ACPI_ERROR((AE_INFO, |
| 245 | "(PRT[%X].Address) Need Integer, found %s", |
| 246 | index, |
| 247 | acpi_ut_get_object_type_name(obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 248 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | } |
| 250 | |
Bob Moore | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 251 | user_prt->address = obj_desc->integer.value; |
| 252 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 253 | /* 2) Second subobject: Dereference the PRT.Pin */ |
| 254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | obj_desc = sub_object_list[1]; |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame^] | 256 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 257 | ACPI_ERROR((AE_INFO, |
| 258 | "(PRT[%X].Pin) Need Integer, found %s", |
| 259 | index, |
| 260 | acpi_ut_get_object_type_name(obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 261 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | } |
| 263 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 264 | /* |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 265 | * If BIOS erroneously reversed the _PRT source_name and source_index, |
| 266 | * then reverse them back. |
| 267 | */ |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame^] | 268 | if ((sub_object_list[3])->common.type != |
Len Brown | fd35094 | 2007-05-09 23:34:35 -0400 | [diff] [blame] | 269 | ACPI_TYPE_INTEGER) { |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 270 | if (acpi_gbl_enable_interpreter_slack) { |
| 271 | source_name_index = 3; |
| 272 | source_index_index = 2; |
Len Brown | fd35094 | 2007-05-09 23:34:35 -0400 | [diff] [blame] | 273 | printk(KERN_WARNING |
| 274 | "ACPI: Handling Garbled _PRT entry\n"); |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 275 | } else { |
| 276 | ACPI_ERROR((AE_INFO, |
Len Brown | fd35094 | 2007-05-09 23:34:35 -0400 | [diff] [blame] | 277 | "(PRT[%X].source_index) Need Integer, found %s", |
| 278 | index, |
| 279 | acpi_ut_get_object_type_name |
| 280 | (sub_object_list[3]))); |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 281 | return_ACPI_STATUS(AE_BAD_DATA); |
| 282 | } |
| 283 | } |
| 284 | |
Bob Moore | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 285 | user_prt->pin = (u32) obj_desc->integer.value; |
| 286 | |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 287 | /* |
Bob Moore | d0e184a | 2008-06-10 14:16:47 +0800 | [diff] [blame] | 288 | * If the BIOS has erroneously reversed the _PRT source_name (index 2) |
| 289 | * and the source_index (index 3), fix it. _PRT is important enough to |
| 290 | * workaround this BIOS error. This also provides compatibility with |
| 291 | * other ACPI implementations. |
| 292 | */ |
| 293 | obj_desc = sub_object_list[3]; |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame^] | 294 | if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) { |
Bob Moore | d0e184a | 2008-06-10 14:16:47 +0800 | [diff] [blame] | 295 | sub_object_list[3] = sub_object_list[2]; |
| 296 | sub_object_list[2] = obj_desc; |
| 297 | |
| 298 | ACPI_WARNING((AE_INFO, |
| 299 | "(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed", |
| 300 | index)); |
| 301 | } |
| 302 | |
| 303 | /* |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 304 | * 3) Third subobject: Dereference the PRT.source_name |
| 305 | * The name may be unresolved (slack mode), so allow a null object |
| 306 | */ |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 307 | obj_desc = sub_object_list[source_name_index]; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 308 | if (obj_desc) { |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame^] | 309 | switch (obj_desc->common.type) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 310 | case ACPI_TYPE_LOCAL_REFERENCE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
Bob Moore | 1044f1f | 2008-09-27 11:08:41 +0800 | [diff] [blame] | 312 | if (obj_desc->reference.class != |
| 313 | ACPI_REFCLASS_NAME) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 314 | ACPI_ERROR((AE_INFO, |
Bob Moore | 1044f1f | 2008-09-27 11:08:41 +0800 | [diff] [blame] | 315 | "(PRT[%X].Source) Need name, found Reference Class %X", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 316 | index, |
Bob Moore | 1044f1f | 2008-09-27 11:08:41 +0800 | [diff] [blame] | 317 | obj_desc->reference.class)); |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 318 | return_ACPI_STATUS(AE_BAD_DATA); |
| 319 | } |
| 320 | |
| 321 | node = obj_desc->reference.node; |
| 322 | |
| 323 | /* Use *remaining* length of the buffer as max for pathname */ |
| 324 | |
| 325 | path_buffer.length = output_buffer->length - |
| 326 | (u32) ((u8 *) user_prt->source - |
| 327 | (u8 *) output_buffer->pointer); |
| 328 | path_buffer.pointer = user_prt->source; |
| 329 | |
| 330 | status = |
| 331 | acpi_ns_handle_to_pathname((acpi_handle) |
| 332 | node, |
| 333 | &path_buffer); |
| 334 | |
| 335 | /* +1 to include null terminator */ |
| 336 | |
| 337 | user_prt->length += |
| 338 | (u32) ACPI_STRLEN(user_prt->source) + 1; |
| 339 | break; |
| 340 | |
| 341 | case ACPI_TYPE_STRING: |
| 342 | |
| 343 | ACPI_STRCPY(user_prt->source, |
| 344 | obj_desc->string.pointer); |
| 345 | |
| 346 | /* |
| 347 | * Add to the Length field the length of the string |
| 348 | * (add 1 for terminator) |
| 349 | */ |
| 350 | user_prt->length += obj_desc->string.length + 1; |
| 351 | break; |
| 352 | |
| 353 | case ACPI_TYPE_INTEGER: |
| 354 | /* |
| 355 | * If this is a number, then the Source Name is NULL, since the |
| 356 | * entire buffer was zeroed out, we can leave this alone. |
| 357 | * |
| 358 | * Add to the Length field the length of the u32 NULL |
| 359 | */ |
| 360 | user_prt->length += sizeof(u32); |
| 361 | break; |
| 362 | |
| 363 | default: |
| 364 | |
| 365 | ACPI_ERROR((AE_INFO, |
| 366 | "(PRT[%X].Source) Need Ref/String/Integer, found %s", |
| 367 | index, |
| 368 | acpi_ut_get_object_type_name |
| 369 | (obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 370 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | /* Now align the current length */ |
| 375 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 376 | user_prt->length = |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 377 | (u32) ACPI_ROUND_UP_TO_64BIT(user_prt->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 379 | /* 4) Fourth subobject: Dereference the PRT.source_index */ |
| 380 | |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 381 | obj_desc = sub_object_list[source_index_index]; |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame^] | 382 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 383 | ACPI_ERROR((AE_INFO, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 384 | "(PRT[%X].SourceIndex) Need Integer, found %s", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 385 | index, |
| 386 | acpi_ut_get_object_type_name(obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 387 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | } |
| 389 | |
Bob Moore | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 390 | user_prt->source_index = (u32) obj_desc->integer.value; |
| 391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | /* Point to the next union acpi_operand_object in the top level package */ |
| 393 | |
| 394 | top_object_list++; |
| 395 | } |
| 396 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 397 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 398 | output_buffer->pointer, (u32) output_buffer->length)); |
| 399 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | } |
| 401 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | /******************************************************************************* |
| 403 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 404 | * FUNCTION: acpi_rs_create_aml_resources |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | * |
| 406 | * PARAMETERS: linked_list_buffer - Pointer to the resource linked list |
| 407 | * output_buffer - Pointer to the user's buffer |
| 408 | * |
| 409 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. |
| 410 | * If the output_buffer is too small, the error will be |
| 411 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point |
| 412 | * to the size buffer needed. |
| 413 | * |
| 414 | * DESCRIPTION: Takes the linked list of device resources and |
| 415 | * creates a bytestream to be used as input for the |
| 416 | * _SRS control method. |
| 417 | * |
| 418 | ******************************************************************************/ |
| 419 | |
| 420 | acpi_status |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 421 | acpi_rs_create_aml_resources(struct acpi_resource *linked_list_buffer, |
| 422 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 424 | acpi_status status; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 425 | acpi_size aml_size_needed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 427 | ACPI_FUNCTION_TRACE(rs_create_aml_resources); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 429 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "LinkedListBuffer = %p\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 430 | linked_list_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | /* |
| 433 | * Params already validated, so we don't re-validate here |
| 434 | * |
| 435 | * Pass the linked_list_buffer into a module that calculates |
| 436 | * the buffer size needed for the byte stream. |
| 437 | */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 438 | status = acpi_rs_get_aml_length(linked_list_buffer, &aml_size_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 440 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 441 | (u32) aml_size_needed, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 442 | acpi_format_exception(status))); |
| 443 | if (ACPI_FAILURE(status)) { |
| 444 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | } |
| 446 | |
| 447 | /* Validate/Allocate/Clear caller buffer */ |
| 448 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 449 | status = acpi_ut_initialize_buffer(output_buffer, aml_size_needed); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 450 | if (ACPI_FAILURE(status)) { |
| 451 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | /* Do the conversion */ |
| 455 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 456 | status = |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 457 | acpi_rs_convert_resources_to_aml(linked_list_buffer, |
| 458 | aml_size_needed, |
| 459 | output_buffer->pointer); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 460 | if (ACPI_FAILURE(status)) { |
| 461 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
| 463 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 464 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 465 | output_buffer->pointer, (u32) output_buffer->length)); |
| 466 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | } |