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 | /* |
| 8 | * Copyright (C) 2000 - 2005, R. Byron Moore |
| 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> |
| 45 | #include <acpi/acresrc.h> |
| 46 | #include <acpi/amlcode.h> |
| 47 | #include <acpi/acnamesp.h> |
| 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 | * |
| 56 | * PARAMETERS: byte_stream_buffer - Pointer to the resource byte stream |
| 57 | * output_buffer - Pointer to the user's buffer |
| 58 | * |
| 59 | * RETURN: Status - AE_OK if okay, else a valid acpi_status code |
| 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 |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 70 | acpi_rs_create_resource_list(union acpi_operand_object *byte_stream_buffer, |
| 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; |
| 75 | u8 *byte_stream_start; |
| 76 | acpi_size list_size_needed = 0; |
| 77 | u32 byte_stream_buffer_length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 79 | ACPI_FUNCTION_TRACE("rs_create_resource_list"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 81 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "byte_stream_buffer = %p\n", |
| 82 | byte_stream_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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | byte_stream_buffer_length = byte_stream_buffer->buffer.length; |
| 87 | byte_stream_start = byte_stream_buffer->buffer.pointer; |
| 88 | |
| 89 | /* |
| 90 | * Pass the byte_stream_buffer into a module that can calculate |
| 91 | * the buffer size needed for the linked list |
| 92 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 93 | status = |
| 94 | acpi_rs_get_list_length(byte_stream_start, |
| 95 | byte_stream_buffer_length, |
| 96 | &list_size_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 98 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X list_size_needed=%X\n", |
| 99 | status, (u32) list_size_needed)); |
| 100 | if (ACPI_FAILURE(status)) { |
| 101 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | /* Validate/Allocate/Clear caller buffer */ |
| 105 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 106 | status = acpi_ut_initialize_buffer(output_buffer, list_size_needed); |
| 107 | if (ACPI_FAILURE(status)) { |
| 108 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | } |
| 110 | |
| 111 | /* Do the conversion */ |
| 112 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 113 | status = |
| 114 | acpi_rs_byte_stream_to_list(byte_stream_start, |
| 115 | byte_stream_buffer_length, |
| 116 | output_buffer->pointer); |
| 117 | if (ACPI_FAILURE(status)) { |
| 118 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | } |
| 120 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 121 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "output_buffer %p Length %X\n", |
| 122 | output_buffer->pointer, (u32) output_buffer->length)); |
| 123 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | } |
| 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | /******************************************************************************* |
| 127 | * |
| 128 | * FUNCTION: acpi_rs_create_pci_routing_table |
| 129 | * |
| 130 | * PARAMETERS: package_object - Pointer to an union acpi_operand_object |
| 131 | * package |
| 132 | * output_buffer - Pointer to the user's buffer |
| 133 | * |
| 134 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. |
| 135 | * If the output_buffer is too small, the error will be |
| 136 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point |
| 137 | * to the size buffer needed. |
| 138 | * |
| 139 | * DESCRIPTION: Takes the union acpi_operand_object package and creates a |
| 140 | * linked list of PCI interrupt descriptions |
| 141 | * |
| 142 | * NOTE: It is the caller's responsibility to ensure that the start of the |
| 143 | * output buffer is aligned properly (if necessary). |
| 144 | * |
| 145 | ******************************************************************************/ |
| 146 | |
| 147 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 148 | acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, |
| 149 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 151 | u8 *buffer; |
| 152 | union acpi_operand_object **top_object_list; |
| 153 | union acpi_operand_object **sub_object_list; |
| 154 | union acpi_operand_object *obj_desc; |
| 155 | acpi_size buffer_size_needed = 0; |
| 156 | u32 number_of_elements; |
| 157 | u32 index; |
| 158 | struct acpi_pci_routing_table *user_prt; |
| 159 | struct acpi_namespace_node *node; |
| 160 | acpi_status status; |
| 161 | struct acpi_buffer path_buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 163 | ACPI_FUNCTION_TRACE("rs_create_pci_routing_table"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
| 165 | /* Params already validated, so we don't re-validate here */ |
| 166 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 167 | /* Get the required buffer length */ |
| 168 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 169 | status = acpi_rs_get_pci_routing_table_length(package_object, |
| 170 | &buffer_size_needed); |
| 171 | if (ACPI_FAILURE(status)) { |
| 172 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | } |
| 174 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 175 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "buffer_size_needed = %X\n", |
| 176 | (u32) buffer_size_needed)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
| 178 | /* Validate/Allocate/Clear caller buffer */ |
| 179 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 180 | status = acpi_ut_initialize_buffer(output_buffer, buffer_size_needed); |
| 181 | if (ACPI_FAILURE(status)) { |
| 182 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | } |
| 184 | |
| 185 | /* |
| 186 | * Loop through the ACPI_INTERNAL_OBJECTS - Each object |
| 187 | * should be a package that in turn contains an |
| 188 | * acpi_integer Address, a u8 Pin, a Name and a u8 source_index. |
| 189 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 190 | top_object_list = package_object->package.elements; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | number_of_elements = package_object->package.count; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 192 | buffer = output_buffer->pointer; |
| 193 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
| 195 | for (index = 0; index < number_of_elements; index++) { |
| 196 | /* |
| 197 | * Point user_prt past this current structure |
| 198 | * |
| 199 | * NOTE: On the first iteration, user_prt->Length will |
| 200 | * be zero because we cleared the return buffer earlier |
| 201 | */ |
| 202 | buffer += user_prt->length; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 203 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | /* |
| 206 | * Fill in the Length field with the information we have at this point. |
| 207 | * The minus four is to subtract the size of the u8 Source[4] member |
| 208 | * because it is added below. |
| 209 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 210 | user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 212 | /* Each element of the top-level package must also be a package */ |
| 213 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 214 | if (ACPI_GET_OBJECT_TYPE(*top_object_list) != ACPI_TYPE_PACKAGE) { |
| 215 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 216 | "(PRT[%X]) Need sub-package, found %s\n", |
| 217 | index, |
| 218 | acpi_ut_get_object_type_name |
| 219 | (*top_object_list))); |
| 220 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | /* Each sub-package must be of length 4 */ |
| 224 | |
| 225 | if ((*top_object_list)->package.count != 4) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 226 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 227 | "(PRT[%X]) Need package of length 4, found length %d\n", |
| 228 | index, |
| 229 | (*top_object_list)->package.count)); |
| 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]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 243 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | user_prt->address = obj_desc->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 245 | } else { |
| 246 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 247 | "(PRT[%X].Address) Need Integer, found %s\n", |
| 248 | index, |
| 249 | acpi_ut_get_object_type_name |
| 250 | (obj_desc))); |
| 251 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 254 | /* 2) Second subobject: Dereference the PRT.Pin */ |
| 255 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | obj_desc = sub_object_list[1]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 257 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | user_prt->pin = (u32) obj_desc->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 259 | } else { |
| 260 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 261 | "(PRT[%X].Pin) Need Integer, found %s\n", |
| 262 | index, |
| 263 | acpi_ut_get_object_type_name |
| 264 | (obj_desc))); |
| 265 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | } |
| 267 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 268 | /* 3) Third subobject: Dereference the PRT.source_name */ |
| 269 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | obj_desc = sub_object_list[2]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 271 | switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | case ACPI_TYPE_LOCAL_REFERENCE: |
| 273 | |
| 274 | if (obj_desc->reference.opcode != AML_INT_NAMEPATH_OP) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 275 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 276 | "(PRT[%X].Source) Need name, found reference op %X\n", |
| 277 | index, |
| 278 | obj_desc->reference.opcode)); |
| 279 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | node = obj_desc->reference.node; |
| 283 | |
| 284 | /* Use *remaining* length of the buffer as max for pathname */ |
| 285 | |
| 286 | path_buffer.length = output_buffer->length - |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 287 | (u32) ((u8 *) user_prt->source - |
| 288 | (u8 *) output_buffer->pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | path_buffer.pointer = user_prt->source; |
| 290 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 291 | status = |
| 292 | acpi_ns_handle_to_pathname((acpi_handle) node, |
| 293 | &path_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 295 | /* +1 to include null terminator */ |
| 296 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 297 | user_prt->length += |
| 298 | (u32) ACPI_STRLEN(user_prt->source) + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | break; |
| 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | case ACPI_TYPE_STRING: |
| 302 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 303 | ACPI_STRCPY(user_prt->source, obj_desc->string.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 305 | /* |
| 306 | * Add to the Length field the length of the string |
| 307 | * (add 1 for terminator) |
| 308 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | user_prt->length += obj_desc->string.length + 1; |
| 310 | break; |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | case ACPI_TYPE_INTEGER: |
| 313 | /* |
| 314 | * If this is a number, then the Source Name is NULL, since the |
| 315 | * entire buffer was zeroed out, we can leave this alone. |
| 316 | * |
| 317 | * Add to the Length field the length of the u32 NULL |
| 318 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 319 | user_prt->length += sizeof(u32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | break; |
| 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | default: |
| 323 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 324 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 325 | "(PRT[%X].Source) Need Ref/String/Integer, found %s\n", |
| 326 | index, |
| 327 | acpi_ut_get_object_type_name |
| 328 | (obj_desc))); |
| 329 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | /* Now align the current length */ |
| 333 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 334 | user_prt->length = |
| 335 | (u32) ACPI_ROUND_UP_to_64_bITS(user_prt->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 337 | /* 4) Fourth subobject: Dereference the PRT.source_index */ |
| 338 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | obj_desc = sub_object_list[3]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 340 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | user_prt->source_index = (u32) obj_desc->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 342 | } else { |
| 343 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 344 | "(PRT[%X].source_index) Need Integer, found %s\n", |
| 345 | index, |
| 346 | acpi_ut_get_object_type_name |
| 347 | (obj_desc))); |
| 348 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | } |
| 350 | |
| 351 | /* Point to the next union acpi_operand_object in the top level package */ |
| 352 | |
| 353 | top_object_list++; |
| 354 | } |
| 355 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 356 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "output_buffer %p Length %X\n", |
| 357 | output_buffer->pointer, (u32) output_buffer->length)); |
| 358 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | } |
| 360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | /******************************************************************************* |
| 362 | * |
| 363 | * FUNCTION: acpi_rs_create_byte_stream |
| 364 | * |
| 365 | * PARAMETERS: linked_list_buffer - Pointer to the resource linked list |
| 366 | * output_buffer - Pointer to the user's buffer |
| 367 | * |
| 368 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. |
| 369 | * If the output_buffer is too small, the error will be |
| 370 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point |
| 371 | * to the size buffer needed. |
| 372 | * |
| 373 | * DESCRIPTION: Takes the linked list of device resources and |
| 374 | * creates a bytestream to be used as input for the |
| 375 | * _SRS control method. |
| 376 | * |
| 377 | ******************************************************************************/ |
| 378 | |
| 379 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 380 | acpi_rs_create_byte_stream(struct acpi_resource *linked_list_buffer, |
| 381 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 383 | acpi_status status; |
| 384 | acpi_size byte_stream_size_needed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 386 | ACPI_FUNCTION_TRACE("rs_create_byte_stream"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 388 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "linked_list_buffer = %p\n", |
| 389 | linked_list_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
| 391 | /* |
| 392 | * Params already validated, so we don't re-validate here |
| 393 | * |
| 394 | * Pass the linked_list_buffer into a module that calculates |
| 395 | * the buffer size needed for the byte stream. |
| 396 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 397 | status = acpi_rs_get_byte_stream_length(linked_list_buffer, |
| 398 | &byte_stream_size_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 400 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "byte_stream_size_needed=%X, %s\n", |
| 401 | (u32) byte_stream_size_needed, |
| 402 | acpi_format_exception(status))); |
| 403 | if (ACPI_FAILURE(status)) { |
| 404 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | } |
| 406 | |
| 407 | /* Validate/Allocate/Clear caller buffer */ |
| 408 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 409 | status = |
| 410 | acpi_ut_initialize_buffer(output_buffer, byte_stream_size_needed); |
| 411 | if (ACPI_FAILURE(status)) { |
| 412 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | } |
| 414 | |
| 415 | /* Do the conversion */ |
| 416 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 417 | status = |
| 418 | acpi_rs_list_to_byte_stream(linked_list_buffer, |
| 419 | byte_stream_size_needed, |
| 420 | output_buffer->pointer); |
| 421 | if (ACPI_FAILURE(status)) { |
| 422 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | } |
| 424 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 425 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "output_buffer %p Length %X\n", |
| 426 | output_buffer->pointer, (u32) output_buffer->length)); |
| 427 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | } |