drivers/acpi/resources/rsmemory.c

   1 /*******************************************************************************
   2  *
   3  * Module Name: rsmem24 - Memory resource descriptors
   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
  44
  45 #include <acpi/acpi.h>
  46 #include <acpi/acresrc.h>
  47
  48 #define _COMPONENT          ACPI_RESOURCES
  49          ACPI_MODULE_NAME    ("rsmemory")
  50
  51
  52 /*******************************************************************************
  53  *
  54  * FUNCTION:    acpi_rs_memory24_resource
  55  *
  56  * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
  57  *                                        stream
  58  *              bytes_consumed          - Pointer to where the number of bytes
  59  *                                        consumed the byte_stream_buffer is
  60  *                                        returned
  61  *              output_buffer           - Pointer to the return data buffer
  62  *              structure_size          - Pointer to where the number of bytes
  63  *                                        in the return data struct is returned
  64  *
  65  * RETURN:      Status
  66  *
  67  * DESCRIPTION: Take the resource byte stream and fill out the appropriate
  68  *              structure pointed to by the output_buffer. Return the
  69  *              number of bytes consumed from the byte stream.
  70  *
  71  ******************************************************************************/
  72
  73 acpi_status
  74 acpi_rs_memory24_resource (
  75         u8                              *byte_stream_buffer,
  76         acpi_size                       *bytes_consumed,
  77         u8                              **output_buffer,
  78         acpi_size                       *structure_size)
  79 {
  80         u8                              *buffer = byte_stream_buffer;
  81         struct acpi_resource            *output_struct = (void *) *output_buffer;
  82         u16                             temp16 = 0;
  83         u8                              temp8 = 0;
  84         acpi_size                       struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem24);
  85
  86
  87         ACPI_FUNCTION_TRACE ("rs_memory24_resource");
  88
  89
  90         /*
  91          * Point past the Descriptor to get the number of bytes consumed
  92          */
  93         buffer += 1;
  94
  95         ACPI_MOVE_16_TO_16 (&temp16, buffer);
  96         buffer += 2;
  97         *bytes_consumed = (acpi_size) temp16 + 3;
  98         output_struct->id = ACPI_RSTYPE_MEM24;
  99
 100         /*
 101          * Check Byte 3 the Read/Write bit
 102          */
 103         temp8 = *buffer;
 104         buffer += 1;
 105         output_struct->data.memory24.read_write_attribute = temp8 & 0x01;
 106
 107         /*
 108          * Get min_base_address (Bytes 4-5)
 109          */
 110         ACPI_MOVE_16_TO_16 (&temp16, buffer);
 111         buffer += 2;
 112         output_struct->data.memory24.min_base_address = temp16;
 113
 114         /*
 115          * Get max_base_address (Bytes 6-7)
 116          */
 117         ACPI_MOVE_16_TO_16 (&temp16, buffer);
 118         buffer += 2;
 119         output_struct->data.memory24.max_base_address = temp16;
 120
 121         /*
 122          * Get Alignment (Bytes 8-9)
 123          */
 124         ACPI_MOVE_16_TO_16 (&temp16, buffer);
 125         buffer += 2;
 126         output_struct->data.memory24.alignment = temp16;
 127
 128         /*
 129          * Get range_length (Bytes 10-11)
 130          */
 131         ACPI_MOVE_16_TO_16 (&temp16, buffer);
 132         output_struct->data.memory24.range_length = temp16;
 133
 134         /*
 135          * Set the Length parameter
 136          */
 137         output_struct->length = (u32) struct_size;
 138
 139         /*
 140          * Return the final size of the structure
 141          */
 142         *structure_size = struct_size;
 143         return_ACPI_STATUS (AE_OK);
 144 }
 145
 146
 147 /*******************************************************************************
 148  *
 149  * FUNCTION:    acpi_rs_memory24_stream
 150  *
 151  * PARAMETERS:  linked_list             - Pointer to the resource linked list
 152  *              output_buffer           - Pointer to the user's return buffer
 153  *              bytes_consumed          - Pointer to where the number of bytes
 154  *                                        used in the output_buffer is returned
 155  *
 156  * RETURN:      Status
 157  *
 158  * DESCRIPTION: Take the linked list resource structure and fills in the
 159  *              the appropriate bytes in a byte stream
 160  *
 161  ******************************************************************************/
 162
 163 acpi_status
 164 acpi_rs_memory24_stream (
 165         struct acpi_resource            *linked_list,
 166         u8                              **output_buffer,
 167         acpi_size                       *bytes_consumed)
 168 {
 169         u8                              *buffer = *output_buffer;
 170         u16                             temp16 = 0;
 171         u8                              temp8 = 0;
 172
 173
 174         ACPI_FUNCTION_TRACE ("rs_memory24_stream");
 175
 176
 177         /*
 178          * The descriptor field is static
 179          */
 180         *buffer = 0x81;
 181         buffer += 1;
 182
 183         /*
 184          * The length field is static
 185          */
 186         temp16 = 0x09;
 187         ACPI_MOVE_16_TO_16 (buffer, &temp16);
 188         buffer += 2;
 189
 190         /*
 191          * Set the Information Byte
 192          */
 193         temp8 = (u8) (linked_list->data.memory24.read_write_attribute & 0x01);
 194         *buffer = temp8;
 195         buffer += 1;
 196
 197         /*
 198          * Set the Range minimum base address
 199          */
 200         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.memory24.min_base_address);
 201         buffer += 2;
 202
 203         /*
 204          * Set the Range maximum base address
 205          */
 206         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.memory24.max_base_address);
 207         buffer += 2;
 208
 209         /*
 210          * Set the base alignment
 211          */
 212         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.memory24.alignment);
 213         buffer += 2;
 214
 215         /*
 216          * Set the range length
 217          */
 218         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.memory24.range_length);
 219         buffer += 2;
 220
 221         /*
 222          * Return the number of bytes consumed in this operation
 223          */
 224         *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
 225         return_ACPI_STATUS (AE_OK);
 226 }
 227
 228
 229 /*******************************************************************************
 230  *
 231  * FUNCTION:    acpi_rs_memory32_range_resource
 232  *
 233  * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
 234  *                                        stream
 235  *              bytes_consumed          - Pointer to where the number of bytes
 236  *                                        consumed the byte_stream_buffer is
 237  *                                        returned
 238  *              output_buffer           - Pointer to the return data buffer
 239  *              structure_size          - Pointer to where the number of bytes
 240  *                                        in the return data struct is returned
 241  *
 242  * RETURN:      Status
 243  *
 244  * DESCRIPTION: Take the resource byte stream and fill out the appropriate
 245  *              structure pointed to by the output_buffer. Return the
 246  *              number of bytes consumed from the byte stream.
 247  *
 248  ******************************************************************************/
 249
 250 acpi_status
 251 acpi_rs_memory32_range_resource (
 252         u8                              *byte_stream_buffer,
 253         acpi_size                       *bytes_consumed,
 254         u8                              **output_buffer,
 255         acpi_size                       *structure_size)
 256 {
 257         u8                              *buffer = byte_stream_buffer;
 258         struct acpi_resource            *output_struct = (void *) *output_buffer;
 259         u16                             temp16 = 0;
 260         u8                              temp8 = 0;
 261         acpi_size                       struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem32);
 262
 263
 264         ACPI_FUNCTION_TRACE ("rs_memory32_range_resource");
 265
 266
 267         /*
 268          * Point past the Descriptor to get the number of bytes consumed
 269          */
 270         buffer += 1;
 271
 272         ACPI_MOVE_16_TO_16 (&temp16, buffer);
 273         buffer += 2;
 274         *bytes_consumed = (acpi_size) temp16 + 3;
 275
 276         output_struct->id = ACPI_RSTYPE_MEM32;
 277
 278         /*
 279          *  Point to the place in the output buffer where the data portion will
 280          *  begin.
 281          *  1. Set the RESOURCE_DATA * Data to point to its own address, then
 282          *  2. Set the pointer to the next address.
 283          *
 284          *  NOTE: output_struct->Data is cast to u8, otherwise, this addition adds
 285          *  4 * sizeof(RESOURCE_DATA) instead of 4 * sizeof(u8)
 286          */
 287
 288         /*
 289          * Check Byte 3 the Read/Write bit
 290          */
 291         temp8 = *buffer;
 292         buffer += 1;
 293
 294         output_struct->data.memory32.read_write_attribute = temp8 & 0x01;
 295
 296         /*
 297          * Get min_base_address (Bytes 4-7)
 298          */
 299         ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.min_base_address, buffer);
 300         buffer += 4;
 301
 302         /*
 303          * Get max_base_address (Bytes 8-11)
 304          */
 305         ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.max_base_address, buffer);
 306         buffer += 4;
 307
 308         /*
 309          * Get Alignment (Bytes 12-15)
 310          */
 311         ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.alignment, buffer);
 312         buffer += 4;
 313
 314         /*
 315          * Get range_length (Bytes 16-19)
 316          */
 317         ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.range_length, buffer);
 318
 319         /*
 320          * Set the Length parameter
 321          */
 322         output_struct->length = (u32) struct_size;
 323
 324         /*
 325          * Return the final size of the structure
 326          */
 327         *structure_size = struct_size;
 328         return_ACPI_STATUS (AE_OK);
 329 }
 330
 331
 332 /*******************************************************************************
 333  *
 334  * FUNCTION:    acpi_rs_fixed_memory32_resource
 335  *
 336  * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
 337  *                                        stream
 338  *              bytes_consumed          - Pointer to where the number of bytes
 339  *                                        consumed the byte_stream_buffer is
 340  *                                        returned
 341  *              output_buffer           - Pointer to the return data buffer
 342  *              structure_size          - Pointer to where the number of bytes
 343  *                                        in the return data struct is returned
 344  *
 345  * RETURN:      Status
 346  *
 347  * DESCRIPTION: Take the resource byte stream and fill out the appropriate
 348  *              structure pointed to by the output_buffer. Return the
 349  *              number of bytes consumed from the byte stream.
 350  *
 351  ******************************************************************************/
 352
 353 acpi_status
 354 acpi_rs_fixed_memory32_resource (
 355         u8                              *byte_stream_buffer,
 356         acpi_size                       *bytes_consumed,
 357         u8                              **output_buffer,
 358         acpi_size                       *structure_size)
 359 {
 360         u8                              *buffer = byte_stream_buffer;
 361         struct acpi_resource            *output_struct = (void *) *output_buffer;
 362         u16                             temp16 = 0;
 363         u8                              temp8 = 0;
 364         acpi_size                       struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_mem32);
 365
 366
 367         ACPI_FUNCTION_TRACE ("rs_fixed_memory32_resource");
 368
 369
 370         /*
 371          * Point past the Descriptor to get the number of bytes consumed
 372          */
 373         buffer += 1;
 374         ACPI_MOVE_16_TO_16 (&temp16, buffer);
 375
 376         buffer += 2;
 377         *bytes_consumed = (acpi_size) temp16 + 3;
 378
 379         output_struct->id = ACPI_RSTYPE_FIXED_MEM32;
 380
 381         /*
 382          * Check Byte 3 the Read/Write bit
 383          */
 384         temp8 = *buffer;
 385         buffer += 1;
 386         output_struct->data.fixed_memory32.read_write_attribute = temp8 & 0x01;
 387
 388         /*
 389          * Get range_base_address (Bytes 4-7)
 390          */
 391         ACPI_MOVE_32_TO_32 (&output_struct->data.fixed_memory32.range_base_address, buffer);
 392         buffer += 4;
 393
 394         /*
 395          * Get range_length (Bytes 8-11)
 396          */
 397         ACPI_MOVE_32_TO_32 (&output_struct->data.fixed_memory32.range_length, buffer);
 398
 399         /*
 400          * Set the Length parameter
 401          */
 402         output_struct->length = (u32) struct_size;
 403
 404         /*
 405          * Return the final size of the structure
 406          */
 407         *structure_size = struct_size;
 408         return_ACPI_STATUS (AE_OK);
 409 }
 410
 411
 412 /*******************************************************************************
 413  *
 414  * FUNCTION:    acpi_rs_memory32_range_stream
 415  *
 416  * PARAMETERS:  linked_list             - Pointer to the resource linked list
 417  *              output_buffer           - Pointer to the user's return buffer
 418  *              bytes_consumed          - Pointer to where the number of bytes
 419  *                                        used in the output_buffer is returned
 420  *
 421  * RETURN:      Status
 422  *
 423  * DESCRIPTION: Take the linked list resource structure and fills in the
 424  *              the appropriate bytes in a byte stream
 425  *
 426  ******************************************************************************/
 427
 428 acpi_status
 429 acpi_rs_memory32_range_stream (
 430         struct acpi_resource            *linked_list,
 431         u8                              **output_buffer,
 432         acpi_size                       *bytes_consumed)
 433 {
 434         u8                              *buffer = *output_buffer;
 435         u16                             temp16 = 0;
 436         u8                              temp8 = 0;
 437
 438
 439         ACPI_FUNCTION_TRACE ("rs_memory32_range_stream");
 440
 441
 442         /*
 443          * The descriptor field is static
 444          */
 445         *buffer = 0x85;
 446         buffer += 1;
 447
 448         /*
 449          * The length field is static
 450          */
 451         temp16 = 0x11;
 452
 453         ACPI_MOVE_16_TO_16 (buffer, &temp16);
 454         buffer += 2;
 455
 456         /*
 457          * Set the Information Byte
 458          */
 459         temp8 = (u8) (linked_list->data.memory32.read_write_attribute & 0x01);
 460         *buffer = temp8;
 461         buffer += 1;
 462
 463         /*
 464          * Set the Range minimum base address
 465          */
 466         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.min_base_address);
 467         buffer += 4;
 468
 469         /*
 470          * Set the Range maximum base address
 471          */
 472         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.max_base_address);
 473         buffer += 4;
 474
 475         /*
 476          * Set the base alignment
 477          */
 478         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.alignment);
 479         buffer += 4;
 480
 481         /*
 482          * Set the range length
 483          */
 484         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.range_length);
 485         buffer += 4;
 486
 487         /*
 488          * Return the number of bytes consumed in this operation
 489          */
 490         *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
 491         return_ACPI_STATUS (AE_OK);
 492 }
 493
 494
 495 /*******************************************************************************
 496  *
 497  * FUNCTION:    acpi_rs_fixed_memory32_stream
 498  *
 499  * PARAMETERS:  linked_list             - Pointer to the resource linked list
 500  *              output_buffer           - Pointer to the user's return buffer
 501  *              bytes_consumed          - Pointer to where the number of bytes
 502  *                                        used in the output_buffer is returned
 503  *
 504  * RETURN:      Status
 505  *
 506  * DESCRIPTION: Take the linked list resource structure and fills in the
 507  *              the appropriate bytes in a byte stream
 508  *
 509  ******************************************************************************/
 510
 511 acpi_status
 512 acpi_rs_fixed_memory32_stream (
 513         struct acpi_resource            *linked_list,
 514         u8                              **output_buffer,
 515         acpi_size                       *bytes_consumed)
 516 {
 517         u8                              *buffer = *output_buffer;
 518         u16                             temp16 = 0;
 519         u8                              temp8 = 0;
 520
 521
 522         ACPI_FUNCTION_TRACE ("rs_fixed_memory32_stream");
 523
 524
 525         /*
 526          * The descriptor field is static
 527          */
 528         *buffer = 0x86;
 529         buffer += 1;
 530
 531         /*
 532          * The length field is static
 533          */
 534         temp16 = 0x09;
 535
 536         ACPI_MOVE_16_TO_16 (buffer, &temp16);
 537         buffer += 2;
 538
 539         /*
 540          * Set the Information Byte
 541          */
 542         temp8 = (u8) (linked_list->data.fixed_memory32.read_write_attribute & 0x01);
 543         *buffer = temp8;
 544         buffer += 1;
 545
 546         /*
 547          * Set the Range base address
 548          */
 549         ACPI_MOVE_32_TO_32 (buffer,
 550                          &linked_list->data.fixed_memory32.range_base_address);
 551         buffer += 4;
 552
 553         /*
 554          * Set the range length
 555          */
 556         ACPI_MOVE_32_TO_32 (buffer,
 557                          &linked_list->data.fixed_memory32.range_length);
 558         buffer += 4;
 559
 560         /*
 561          * Return the number of bytes consumed in this operation
 562          */
 563         *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
 564         return_ACPI_STATUS (AE_OK);
 565 }
 566