Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * |
| 3 | * Module Name: rsutils - Utilities for the resource manager |
| 4 | * |
| 5 | ******************************************************************************/ |
| 6 | |
| 7 | /* |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
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> |
| 45 | #include <acpi/acnamesp.h> |
| 46 | #include <acpi/acresrc.h> |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #define _COMPONENT ACPI_RESOURCES |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 49 | ACPI_MODULE_NAME("rsutils") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | /******************************************************************************* |
| 52 | * |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 53 | * FUNCTION: acpi_rs_decode_bitmask |
| 54 | * |
| 55 | * PARAMETERS: Mask - Bitmask to decode |
| 56 | * List - Where the converted list is returned |
| 57 | * |
| 58 | * RETURN: Count of bits set (length of list) |
| 59 | * |
| 60 | * DESCRIPTION: Convert a bit mask into a list of values |
| 61 | * |
| 62 | ******************************************************************************/ |
| 63 | u8 acpi_rs_decode_bitmask(u16 mask, u8 * list) |
| 64 | { |
| 65 | acpi_native_uint i; |
| 66 | u8 bit_count; |
| 67 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 68 | ACPI_FUNCTION_ENTRY(); |
| 69 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 70 | /* Decode the mask bits */ |
| 71 | |
| 72 | for (i = 0, bit_count = 0; mask; i++) { |
| 73 | if (mask & 0x0001) { |
| 74 | list[bit_count] = (u8) i; |
| 75 | bit_count++; |
| 76 | } |
| 77 | |
| 78 | mask >>= 1; |
| 79 | } |
| 80 | |
| 81 | return (bit_count); |
| 82 | } |
| 83 | |
| 84 | /******************************************************************************* |
| 85 | * |
| 86 | * FUNCTION: acpi_rs_encode_bitmask |
| 87 | * |
| 88 | * PARAMETERS: List - List of values to encode |
| 89 | * Count - Length of list |
| 90 | * |
| 91 | * RETURN: Encoded bitmask |
| 92 | * |
| 93 | * DESCRIPTION: Convert a list of values to an encoded bitmask |
| 94 | * |
| 95 | ******************************************************************************/ |
| 96 | |
| 97 | u16 acpi_rs_encode_bitmask(u8 * list, u8 count) |
| 98 | { |
| 99 | acpi_native_uint i; |
| 100 | u16 mask; |
| 101 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 102 | ACPI_FUNCTION_ENTRY(); |
| 103 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 104 | /* Encode the list into a single bitmask */ |
| 105 | |
| 106 | for (i = 0, mask = 0; i < count; i++) { |
| 107 | mask |= (0x0001 << list[i]); |
| 108 | } |
| 109 | |
| 110 | return (mask); |
| 111 | } |
| 112 | |
| 113 | /******************************************************************************* |
| 114 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 115 | * FUNCTION: acpi_rs_move_data |
| 116 | * |
| 117 | * PARAMETERS: Destination - Pointer to the destination descriptor |
| 118 | * Source - Pointer to the source descriptor |
| 119 | * item_count - How many items to move |
| 120 | * move_type - Byte width |
| 121 | * |
| 122 | * RETURN: None |
| 123 | * |
| 124 | * DESCRIPTION: Move multiple data items from one descriptor to another. Handles |
| 125 | * alignment issues and endian issues if necessary, as configured |
| 126 | * via the ACPI_MOVE_* macros. (This is why a memcpy is not used) |
| 127 | * |
| 128 | ******************************************************************************/ |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 129 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 130 | void |
| 131 | acpi_rs_move_data(void *destination, void *source, u16 item_count, u8 move_type) |
| 132 | { |
| 133 | acpi_native_uint i; |
| 134 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 135 | ACPI_FUNCTION_ENTRY(); |
| 136 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 137 | /* One move per item */ |
| 138 | |
| 139 | for (i = 0; i < item_count; i++) { |
| 140 | switch (move_type) { |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 141 | /* |
| 142 | * For the 8-bit case, we can perform the move all at once |
| 143 | * since there are no alignment or endian issues |
| 144 | */ |
| 145 | case ACPI_RSC_MOVE8: |
| 146 | ACPI_MEMCPY(destination, source, item_count); |
| 147 | return; |
| 148 | |
| 149 | /* |
| 150 | * 16-, 32-, and 64-bit cases must use the move macros that perform |
| 151 | * endian conversion and/or accomodate hardware that cannot perform |
| 152 | * misaligned memory transfers |
| 153 | */ |
| 154 | case ACPI_RSC_MOVE16: |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 155 | ACPI_MOVE_16_TO_16(&ACPI_CAST_PTR(u16, destination)[i], |
| 156 | &ACPI_CAST_PTR(u16, source)[i]); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 157 | break; |
| 158 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 159 | case ACPI_RSC_MOVE32: |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 160 | ACPI_MOVE_32_TO_32(&ACPI_CAST_PTR(u32, destination)[i], |
| 161 | &ACPI_CAST_PTR(u32, source)[i]); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 162 | break; |
| 163 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 164 | case ACPI_RSC_MOVE64: |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 165 | ACPI_MOVE_64_TO_64(&ACPI_CAST_PTR(u64, destination)[i], |
| 166 | &ACPI_CAST_PTR(u64, source)[i]); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 167 | break; |
| 168 | |
| 169 | default: |
| 170 | return; |
| 171 | } |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | /******************************************************************************* |
| 176 | * |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 177 | * FUNCTION: acpi_rs_set_resource_length |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 178 | * |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 179 | * PARAMETERS: total_length - Length of the AML descriptor, including |
| 180 | * the header and length fields. |
| 181 | * Aml - Pointer to the raw AML descriptor |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 182 | * |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 183 | * RETURN: None |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 184 | * |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 185 | * DESCRIPTION: Set the resource_length field of an AML |
| 186 | * resource descriptor, both Large and Small descriptors are |
| 187 | * supported automatically. Note: Descriptor Type field must |
| 188 | * be valid. |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 189 | * |
| 190 | ******************************************************************************/ |
| 191 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 192 | void |
| 193 | acpi_rs_set_resource_length(acpi_rsdesc_size total_length, |
| 194 | union aml_resource *aml) |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 195 | { |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 196 | acpi_rs_length resource_length; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 197 | |
| 198 | ACPI_FUNCTION_ENTRY(); |
| 199 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 200 | /* Length is the total descriptor length minus the header length */ |
| 201 | |
| 202 | resource_length = (acpi_rs_length) |
| 203 | (total_length - acpi_ut_get_resource_header_length(aml)); |
| 204 | |
| 205 | /* Length is stored differently for large and small descriptors */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 206 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 207 | if (aml->small_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 208 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 209 | /* Large descriptor -- bytes 1-2 contain the 16-bit length */ |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 210 | |
| 211 | ACPI_MOVE_16_TO_16(&aml->large_header.resource_length, |
| 212 | &resource_length); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 213 | } else { |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 214 | /* Small descriptor -- bits 2:0 of byte 0 contain the length */ |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 215 | |
| 216 | aml->small_header.descriptor_type = (u8) |
| 217 | |
| 218 | /* Clear any existing length, preserving descriptor type bits */ |
| 219 | ((aml->small_header. |
| 220 | descriptor_type & ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK) |
| 221 | |
| 222 | | resource_length); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 223 | } |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | /******************************************************************************* |
| 227 | * |
| 228 | * FUNCTION: acpi_rs_set_resource_header |
| 229 | * |
| 230 | * PARAMETERS: descriptor_type - Byte to be inserted as the type |
| 231 | * total_length - Length of the AML descriptor, including |
| 232 | * the header and length fields. |
| 233 | * Aml - Pointer to the raw AML descriptor |
| 234 | * |
| 235 | * RETURN: None |
| 236 | * |
| 237 | * DESCRIPTION: Set the descriptor_type and resource_length fields of an AML |
| 238 | * resource descriptor, both Large and Small descriptors are |
| 239 | * supported automatically |
| 240 | * |
| 241 | ******************************************************************************/ |
| 242 | |
| 243 | void |
| 244 | acpi_rs_set_resource_header(u8 descriptor_type, |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 245 | acpi_rsdesc_size total_length, |
| 246 | union aml_resource *aml) |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 247 | { |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 248 | ACPI_FUNCTION_ENTRY(); |
| 249 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 250 | /* Set the Resource Type */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 251 | |
| 252 | aml->small_header.descriptor_type = descriptor_type; |
| 253 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 254 | /* Set the Resource Length */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 255 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 256 | acpi_rs_set_resource_length(total_length, aml); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | /******************************************************************************* |
| 260 | * |
| 261 | * FUNCTION: acpi_rs_strcpy |
| 262 | * |
| 263 | * PARAMETERS: Destination - Pointer to the destination string |
| 264 | * Source - Pointer to the source string |
| 265 | * |
| 266 | * RETURN: String length, including NULL terminator |
| 267 | * |
| 268 | * DESCRIPTION: Local string copy that returns the string length, saving a |
| 269 | * strcpy followed by a strlen. |
| 270 | * |
| 271 | ******************************************************************************/ |
| 272 | |
| 273 | static u16 acpi_rs_strcpy(char *destination, char *source) |
| 274 | { |
| 275 | u16 i; |
| 276 | |
| 277 | ACPI_FUNCTION_ENTRY(); |
| 278 | |
| 279 | for (i = 0; source[i]; i++) { |
| 280 | destination[i] = source[i]; |
| 281 | } |
| 282 | |
| 283 | destination[i] = 0; |
| 284 | |
| 285 | /* Return string length including the NULL terminator */ |
| 286 | |
| 287 | return ((u16) (i + 1)); |
| 288 | } |
| 289 | |
| 290 | /******************************************************************************* |
| 291 | * |
| 292 | * FUNCTION: acpi_rs_get_resource_source |
| 293 | * |
| 294 | * PARAMETERS: resource_length - Length field of the descriptor |
| 295 | * minimum_length - Minimum length of the descriptor (minus |
| 296 | * any optional fields) |
| 297 | * resource_source - Where the resource_source is returned |
| 298 | * Aml - Pointer to the raw AML descriptor |
| 299 | * string_ptr - (optional) where to store the actual |
| 300 | * resource_source string |
| 301 | * |
Bob Moore | ea936b7 | 2006-02-17 00:00:00 -0500 | [diff] [blame] | 302 | * RETURN: Length of the string plus NULL terminator, rounded up to native |
| 303 | * word boundary |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 304 | * |
| 305 | * DESCRIPTION: Copy the optional resource_source data from a raw AML descriptor |
| 306 | * to an internal resource descriptor |
| 307 | * |
| 308 | ******************************************************************************/ |
| 309 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 310 | acpi_rs_length |
| 311 | acpi_rs_get_resource_source(acpi_rs_length resource_length, |
| 312 | acpi_rs_length minimum_length, |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 313 | struct acpi_resource_source * resource_source, |
| 314 | union aml_resource * aml, char *string_ptr) |
| 315 | { |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 316 | acpi_rsdesc_size total_length; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 317 | u8 *aml_resource_source; |
| 318 | |
| 319 | ACPI_FUNCTION_ENTRY(); |
| 320 | |
| 321 | total_length = |
| 322 | resource_length + sizeof(struct aml_resource_large_header); |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 323 | aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 324 | |
| 325 | /* |
| 326 | * resource_source is present if the length of the descriptor is longer than |
| 327 | * the minimum length. |
| 328 | * |
| 329 | * Note: Some resource descriptors will have an additional null, so |
| 330 | * we add 1 to the minimum length. |
| 331 | */ |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 332 | if (total_length > (acpi_rsdesc_size) (minimum_length + 1)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 333 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 334 | /* Get the resource_source_index */ |
| 335 | |
| 336 | resource_source->index = aml_resource_source[0]; |
| 337 | |
| 338 | resource_source->string_ptr = string_ptr; |
| 339 | if (!string_ptr) { |
| 340 | /* |
| 341 | * String destination pointer is not specified; Set the String |
| 342 | * pointer to the end of the current resource_source structure. |
| 343 | */ |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 344 | resource_source->string_ptr = |
| 345 | ACPI_ADD_PTR(char, resource_source, |
| 346 | sizeof(struct acpi_resource_source)); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 347 | } |
| 348 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 349 | /* |
Bob Moore | ea936b7 | 2006-02-17 00:00:00 -0500 | [diff] [blame] | 350 | * In order for the Resource length to be a multiple of the native |
| 351 | * word, calculate the length of the string (+1 for NULL terminator) |
| 352 | * and expand to the next word multiple. |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 353 | * |
| 354 | * Zero the entire area of the buffer. |
| 355 | */ |
| 356 | total_length = |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 357 | (u32) |
Bob Moore | ea936b7 | 2006-02-17 00:00:00 -0500 | [diff] [blame] | 358 | ACPI_STRLEN(ACPI_CAST_PTR(char, &aml_resource_source[1])) + |
| 359 | 1; |
| 360 | total_length = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(total_length); |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 361 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 362 | ACPI_MEMSET(resource_source->string_ptr, 0, total_length); |
| 363 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 364 | /* Copy the resource_source string to the destination */ |
| 365 | |
| 366 | resource_source->string_length = |
| 367 | acpi_rs_strcpy(resource_source->string_ptr, |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 368 | ACPI_CAST_PTR(char, |
| 369 | &aml_resource_source[1])); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 370 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 371 | return ((acpi_rs_length) total_length); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 372 | } |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 373 | |
| 374 | /* resource_source is not present */ |
| 375 | |
| 376 | resource_source->index = 0; |
| 377 | resource_source->string_length = 0; |
| 378 | resource_source->string_ptr = NULL; |
| 379 | return (0); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | /******************************************************************************* |
| 383 | * |
| 384 | * FUNCTION: acpi_rs_set_resource_source |
| 385 | * |
| 386 | * PARAMETERS: Aml - Pointer to the raw AML descriptor |
| 387 | * minimum_length - Minimum length of the descriptor (minus |
| 388 | * any optional fields) |
| 389 | * resource_source - Internal resource_source |
| 390 | |
| 391 | * |
| 392 | * RETURN: Total length of the AML descriptor |
| 393 | * |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 394 | * DESCRIPTION: Convert an optional resource_source from internal format to a |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 395 | * raw AML resource descriptor |
| 396 | * |
| 397 | ******************************************************************************/ |
| 398 | |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 399 | acpi_rsdesc_size |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 400 | acpi_rs_set_resource_source(union aml_resource * aml, |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 401 | acpi_rs_length minimum_length, |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 402 | struct acpi_resource_source * resource_source) |
| 403 | { |
| 404 | u8 *aml_resource_source; |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 405 | acpi_rsdesc_size descriptor_length; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 406 | |
| 407 | ACPI_FUNCTION_ENTRY(); |
| 408 | |
| 409 | descriptor_length = minimum_length; |
| 410 | |
| 411 | /* Non-zero string length indicates presence of a resource_source */ |
| 412 | |
| 413 | if (resource_source->string_length) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 414 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 415 | /* Point to the end of the AML descriptor */ |
| 416 | |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 417 | aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 418 | |
| 419 | /* Copy the resource_source_index */ |
| 420 | |
| 421 | aml_resource_source[0] = (u8) resource_source->index; |
| 422 | |
| 423 | /* Copy the resource_source string */ |
| 424 | |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 425 | ACPI_STRCPY(ACPI_CAST_PTR(char, &aml_resource_source[1]), |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 426 | resource_source->string_ptr); |
| 427 | |
| 428 | /* |
| 429 | * Add the length of the string (+ 1 for null terminator) to the |
| 430 | * final descriptor length |
| 431 | */ |
| 432 | descriptor_length += |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 433 | ((acpi_rsdesc_size) resource_source->string_length + 1); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 434 | } |
| 435 | |
| 436 | /* Return the new total length of the AML descriptor */ |
| 437 | |
| 438 | return (descriptor_length); |
| 439 | } |
| 440 | |
| 441 | /******************************************************************************* |
| 442 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | * FUNCTION: acpi_rs_get_prt_method_data |
| 444 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 445 | * PARAMETERS: Node - Device node |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 446 | * ret_buffer - Pointer to a buffer structure for the |
| 447 | * results |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | * |
| 449 | * RETURN: Status |
| 450 | * |
| 451 | * DESCRIPTION: This function is called to get the _PRT value of an object |
| 452 | * contained in an object specified by the handle passed in |
| 453 | * |
| 454 | * If the function fails an appropriate status will be returned |
| 455 | * and the contents of the callers buffer is undefined. |
| 456 | * |
| 457 | ******************************************************************************/ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | acpi_status |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 460 | acpi_rs_get_prt_method_data(struct acpi_namespace_node * node, |
| 461 | struct acpi_buffer * ret_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 463 | union acpi_operand_object *obj_desc; |
| 464 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 466 | ACPI_FUNCTION_TRACE(rs_get_prt_method_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
| 468 | /* Parameters guaranteed valid by caller */ |
| 469 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 470 | /* Execute the method, no parameters */ |
| 471 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 472 | status = acpi_ut_evaluate_object(node, METHOD_NAME__PRT, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 473 | ACPI_BTYPE_PACKAGE, &obj_desc); |
| 474 | if (ACPI_FAILURE(status)) { |
| 475 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | /* |
| 479 | * Create a resource linked list from the byte stream buffer that comes |
| 480 | * back from the _CRS method execution. |
| 481 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 482 | status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | |
| 484 | /* On exit, we must delete the object returned by evaluate_object */ |
| 485 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 486 | acpi_ut_remove_reference(obj_desc); |
| 487 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | } |
| 489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | /******************************************************************************* |
| 491 | * |
| 492 | * FUNCTION: acpi_rs_get_crs_method_data |
| 493 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 494 | * PARAMETERS: Node - Device node |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 495 | * ret_buffer - Pointer to a buffer structure for the |
| 496 | * results |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | * |
| 498 | * RETURN: Status |
| 499 | * |
| 500 | * DESCRIPTION: This function is called to get the _CRS value of an object |
| 501 | * contained in an object specified by the handle passed in |
| 502 | * |
| 503 | * If the function fails an appropriate status will be returned |
| 504 | * and the contents of the callers buffer is undefined. |
| 505 | * |
| 506 | ******************************************************************************/ |
| 507 | |
| 508 | acpi_status |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 509 | acpi_rs_get_crs_method_data(struct acpi_namespace_node *node, |
| 510 | struct acpi_buffer *ret_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 512 | union acpi_operand_object *obj_desc; |
| 513 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 515 | ACPI_FUNCTION_TRACE(rs_get_crs_method_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | |
| 517 | /* Parameters guaranteed valid by caller */ |
| 518 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 519 | /* Execute the method, no parameters */ |
| 520 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 521 | status = acpi_ut_evaluate_object(node, METHOD_NAME__CRS, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 522 | ACPI_BTYPE_BUFFER, &obj_desc); |
| 523 | if (ACPI_FAILURE(status)) { |
| 524 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | /* |
| 528 | * Make the call to create a resource linked list from the |
| 529 | * byte stream buffer that comes back from the _CRS method |
| 530 | * execution. |
| 531 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 532 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 534 | /* On exit, we must delete the object returned by evaluate_object */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 536 | acpi_ut_remove_reference(obj_desc); |
| 537 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | } |
| 539 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | /******************************************************************************* |
| 541 | * |
| 542 | * FUNCTION: acpi_rs_get_prs_method_data |
| 543 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 544 | * PARAMETERS: Node - Device node |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 545 | * ret_buffer - Pointer to a buffer structure for the |
| 546 | * results |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | * |
| 548 | * RETURN: Status |
| 549 | * |
| 550 | * DESCRIPTION: This function is called to get the _PRS value of an object |
| 551 | * contained in an object specified by the handle passed in |
| 552 | * |
| 553 | * If the function fails an appropriate status will be returned |
| 554 | * and the contents of the callers buffer is undefined. |
| 555 | * |
| 556 | ******************************************************************************/ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 557 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | #ifdef ACPI_FUTURE_USAGE |
| 559 | acpi_status |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 560 | acpi_rs_get_prs_method_data(struct acpi_namespace_node *node, |
| 561 | struct acpi_buffer *ret_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 563 | union acpi_operand_object *obj_desc; |
| 564 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 566 | ACPI_FUNCTION_TRACE(rs_get_prs_method_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
| 568 | /* Parameters guaranteed valid by caller */ |
| 569 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 570 | /* Execute the method, no parameters */ |
| 571 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 572 | status = acpi_ut_evaluate_object(node, METHOD_NAME__PRS, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 573 | ACPI_BTYPE_BUFFER, &obj_desc); |
| 574 | if (ACPI_FAILURE(status)) { |
| 575 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | } |
| 577 | |
| 578 | /* |
| 579 | * Make the call to create a resource linked list from the |
| 580 | * byte stream buffer that comes back from the _CRS method |
| 581 | * execution. |
| 582 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 583 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 585 | /* On exit, we must delete the object returned by evaluate_object */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 587 | acpi_ut_remove_reference(obj_desc); |
| 588 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 590 | #endif /* ACPI_FUTURE_USAGE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
| 592 | /******************************************************************************* |
| 593 | * |
| 594 | * FUNCTION: acpi_rs_get_method_data |
| 595 | * |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 596 | * PARAMETERS: Handle - Handle to the containing object |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 597 | * Path - Path to method, relative to Handle |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 598 | * ret_buffer - Pointer to a buffer structure for the |
| 599 | * results |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | * |
| 601 | * RETURN: Status |
| 602 | * |
| 603 | * DESCRIPTION: This function is called to get the _CRS or _PRS value of an |
| 604 | * object contained in an object specified by the handle passed in |
| 605 | * |
| 606 | * If the function fails an appropriate status will be returned |
| 607 | * and the contents of the callers buffer is undefined. |
| 608 | * |
| 609 | ******************************************************************************/ |
| 610 | |
| 611 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 612 | acpi_rs_get_method_data(acpi_handle handle, |
| 613 | char *path, struct acpi_buffer *ret_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 615 | union acpi_operand_object *obj_desc; |
| 616 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 618 | ACPI_FUNCTION_TRACE(rs_get_method_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | |
| 620 | /* Parameters guaranteed valid by caller */ |
| 621 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 622 | /* Execute the method, no parameters */ |
| 623 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 624 | status = |
| 625 | acpi_ut_evaluate_object(handle, path, ACPI_BTYPE_BUFFER, &obj_desc); |
| 626 | if (ACPI_FAILURE(status)) { |
| 627 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | } |
| 629 | |
| 630 | /* |
| 631 | * Make the call to create a resource linked list from the |
| 632 | * byte stream buffer that comes back from the method |
| 633 | * execution. |
| 634 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 635 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | |
| 637 | /* On exit, we must delete the object returned by evaluate_object */ |
| 638 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 639 | acpi_ut_remove_reference(obj_desc); |
| 640 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | } |
| 642 | |
| 643 | /******************************************************************************* |
| 644 | * |
| 645 | * FUNCTION: acpi_rs_set_srs_method_data |
| 646 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 647 | * PARAMETERS: Node - Device node |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 648 | * in_buffer - Pointer to a buffer structure of the |
| 649 | * parameter |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | * |
| 651 | * RETURN: Status |
| 652 | * |
| 653 | * DESCRIPTION: This function is called to set the _SRS of an object contained |
| 654 | * in an object specified by the handle passed in |
| 655 | * |
| 656 | * If the function fails an appropriate status will be returned |
| 657 | * and the contents of the callers buffer is undefined. |
| 658 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 659 | * Note: Parameters guaranteed valid by caller |
| 660 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | ******************************************************************************/ |
| 662 | |
| 663 | acpi_status |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 664 | acpi_rs_set_srs_method_data(struct acpi_namespace_node *node, |
| 665 | struct acpi_buffer *in_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | { |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 667 | struct acpi_evaluate_info *info; |
| 668 | union acpi_operand_object *args[2]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 669 | acpi_status status; |
| 670 | struct acpi_buffer buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 672 | ACPI_FUNCTION_TRACE(rs_set_srs_method_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 674 | /* Allocate and initialize the evaluation information block */ |
| 675 | |
| 676 | info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); |
| 677 | if (!info) { |
| 678 | return_ACPI_STATUS(AE_NO_MEMORY); |
| 679 | } |
| 680 | |
| 681 | info->prefix_node = node; |
| 682 | info->pathname = METHOD_NAME__SRS; |
| 683 | info->parameters = args; |
| 684 | info->parameter_type = ACPI_PARAM_ARGS; |
| 685 | info->flags = ACPI_IGNORE_RETURN_VALUE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
| 687 | /* |
| 688 | * The in_buffer parameter will point to a linked list of |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 689 | * resource parameters. It needs to be formatted into a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | * byte stream to be sent in as an input parameter to _SRS |
| 691 | * |
| 692 | * Convert the linked list into a byte stream |
| 693 | */ |
| 694 | buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 695 | status = acpi_rs_create_aml_resources(in_buffer->pointer, &buffer); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 696 | if (ACPI_FAILURE(status)) { |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 697 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | } |
| 699 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 700 | /* Create and initialize the method parameter object */ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 701 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 702 | args[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER); |
| 703 | if (!args[0]) { |
| 704 | /* |
| 705 | * Must free the buffer allocated above (otherwise it is freed |
| 706 | * later) |
| 707 | */ |
| 708 | ACPI_FREE(buffer.pointer); |
| 709 | status = AE_NO_MEMORY; |
| 710 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | } |
| 712 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 713 | args[0]->buffer.length = (u32) buffer.length; |
| 714 | args[0]->buffer.pointer = buffer.pointer; |
| 715 | args[0]->common.flags = AOPOBJ_DATA_VALID; |
| 716 | args[1] = NULL; |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 717 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 718 | /* Execute the method, no return value is expected */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 720 | status = acpi_ns_evaluate(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 722 | /* Clean up and return the status from acpi_ns_evaluate */ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 723 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 724 | acpi_ut_remove_reference(args[0]); |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 725 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 726 | cleanup: |
| 727 | ACPI_FREE(info); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 728 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | } |