git.oblomov.eu Git - linux-2.6/blob - drivers/acpi/resources/rsaddr.c

   1 /*******************************************************************************
   2  *
   3  * Module Name: rsaddr - Address resource descriptors (16/32/64)
   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    ("rsaddr")
  50
  51
  52 /*******************************************************************************
  53  *
  54  * FUNCTION:    acpi_rs_address16_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_address16_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         u8                              *temp_ptr;
  83         acpi_size                       struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address16);
  84         u32                             index;
  85         u16                             temp16;
  86         u8                              temp8;
  87
  88
  89         ACPI_FUNCTION_TRACE ("rs_address16_resource");
  90
  91
  92         /*
  93          * Point past the Descriptor to get the number of bytes consumed
  94          */
  95         buffer += 1;
  96         ACPI_MOVE_16_TO_16 (&temp16, buffer);
  97
  98         /* Validate minimum descriptor length */
  99
 100         if (temp16 < 13) {
 101                 return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
 102         }
 103
 104         *bytes_consumed = temp16 + 3;
 105         output_struct->id = ACPI_RSTYPE_ADDRESS16;
 106
 107         /*
 108          * Get the Resource Type (Byte3)
 109          */
 110         buffer += 2;
 111         temp8 = *buffer;
 112
 113         /* Values 0-2 and 0xC0-0xFF are valid */
 114
 115         if ((temp8 > 2) && (temp8 < 0xC0)) {
 116                 return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
 117         }
 118
 119         output_struct->data.address16.resource_type = temp8;
 120
 121         /*
 122          * Get the General Flags (Byte4)
 123          */
 124         buffer += 1;
 125         temp8 = *buffer;
 126
 127         /* Producer / Consumer */
 128
 129         output_struct->data.address16.producer_consumer = temp8 & 0x01;
 130
 131         /* Decode */
 132
 133         output_struct->data.address16.decode = (temp8 >> 1) & 0x01;
 134
 135         /* Min Address Fixed */
 136
 137         output_struct->data.address16.min_address_fixed = (temp8 >> 2) & 0x01;
 138
 139         /* Max Address Fixed */
 140
 141         output_struct->data.address16.max_address_fixed = (temp8 >> 3) & 0x01;
 142
 143         /*
 144          * Get the Type Specific Flags (Byte5)
 145          */
 146         buffer += 1;
 147         temp8 = *buffer;
 148
 149         if (ACPI_MEMORY_RANGE == output_struct->data.address16.resource_type) {
 150                 output_struct->data.address16.attribute.memory.read_write_attribute =
 151                                 (u16) (temp8 & 0x01);
 152                 output_struct->data.address16.attribute.memory.cache_attribute =
 153                                 (u16) ((temp8 >> 1) & 0x03);
 154         }
 155         else {
 156                 if (ACPI_IO_RANGE == output_struct->data.address16.resource_type) {
 157                         output_struct->data.address16.attribute.io.range_attribute =
 158                                 (u16) (temp8 & 0x03);
 159                         output_struct->data.address16.attribute.io.translation_attribute =
 160                                 (u16) ((temp8 >> 4) & 0x03);
 161                 }
 162                 else {
 163                         /* BUS_NUMBER_RANGE == Address16.Data->resource_type */
 164                         /* Nothing needs to be filled in */
 165                 }
 166         }
 167
 168         /*
 169          * Get Granularity (Bytes 6-7)
 170          */
 171         buffer += 1;
 172         ACPI_MOVE_16_TO_32 (&output_struct->data.address16.granularity, buffer);
 173
 174         /*
 175          * Get min_address_range (Bytes 8-9)
 176          */
 177         buffer += 2;
 178         ACPI_MOVE_16_TO_32 (&output_struct->data.address16.min_address_range, buffer);
 179
 180         /*
 181          * Get max_address_range (Bytes 10-11)
 182          */
 183         buffer += 2;
 184         ACPI_MOVE_16_TO_32 (&output_struct->data.address16.max_address_range, buffer);
 185
 186         /*
 187          * Get address_translation_offset (Bytes 12-13)
 188          */
 189         buffer += 2;
 190         ACPI_MOVE_16_TO_32 (&output_struct->data.address16.address_translation_offset, buffer);
 191
 192         /*
 193          * Get address_length (Bytes 14-15)
 194          */
 195         buffer += 2;
 196         ACPI_MOVE_16_TO_32 (&output_struct->data.address16.address_length, buffer);
 197
 198         /*
 199          * Resource Source Index (if present)
 200          */
 201         buffer += 2;
 202
 203         /*
 204          * This will leave us pointing to the Resource Source Index
 205          * If it is present, then save it off and calculate the
 206          * pointer to where the null terminated string goes:
 207          * Each Interrupt takes 32-bits + the 5 bytes of the
 208          * stream that are default.
 209          *
 210          * Note: Some resource descriptors will have an additional null, so
 211          * we add 1 to the length.
 212          */
 213         if (*bytes_consumed > (16 + 1)) {
 214                 /* Dereference the Index */
 215
 216                 temp8 = *buffer;
 217                 output_struct->data.address16.resource_source.index = (u32) temp8;
 218
 219                 /* Point to the String */
 220
 221                 buffer += 1;
 222
 223                 /* Point the String pointer to the end of this structure */
 224
 225                 output_struct->data.address16.resource_source.string_ptr =
 226                                 (char *)((u8 * )output_struct + struct_size);
 227
 228                 temp_ptr = (u8 *) output_struct->data.address16.resource_source.string_ptr;
 229
 230                 /* Copy the string into the buffer */
 231
 232                 index = 0;
 233
 234                 while (0x00 != *buffer) {
 235                         *temp_ptr = *buffer;
 236
 237                         temp_ptr += 1;
 238                         buffer += 1;
 239                         index += 1;
 240                 }
 241
 242                 /*
 243                  * Add the terminating null
 244                  */
 245                 *temp_ptr = 0x00;
 246
 247                 output_struct->data.address16.resource_source.string_length = index + 1;
 248
 249                 /*
 250                  * In order for the struct_size to fall on a 32-bit boundary,
 251                  * calculate the length of the string and expand the
 252                  * struct_size to the next 32-bit boundary.
 253                  */
 254                 temp8 = (u8) (index + 1);
 255                 struct_size += ACPI_ROUND_UP_to_32_bITS (temp8);
 256         }
 257         else {
 258                 output_struct->data.address16.resource_source.index = 0x00;
 259                 output_struct->data.address16.resource_source.string_length = 0;
 260                 output_struct->data.address16.resource_source.string_ptr = NULL;
 261         }
 262
 263         /*
 264          * Set the Length parameter
 265          */
 266         output_struct->length = (u32) struct_size;
 267
 268         /*
 269          * Return the final size of the structure
 270          */
 271         *structure_size = struct_size;
 272         return_ACPI_STATUS (AE_OK);
 273 }
 274
 275
 276 /*******************************************************************************
 277  *
 278  * FUNCTION:    acpi_rs_address16_stream
 279  *
 280  * PARAMETERS:  linked_list             - Pointer to the resource linked list
 281  *              output_buffer           - Pointer to the user's return buffer
 282  *              bytes_consumed          - Pointer to where the number of bytes
 283  *                                        used in the output_buffer is returned
 284  *
 285  * RETURN:      Status
 286  *
 287  * DESCRIPTION: Take the linked list resource structure and fills in the
 288  *              the appropriate bytes in a byte stream
 289  *
 290  ******************************************************************************/
 291
 292 acpi_status
 293 acpi_rs_address16_stream (
 294         struct acpi_resource            *linked_list,
 295         u8                              **output_buffer,
 296         acpi_size                       *bytes_consumed)
 297 {
 298         u8                              *buffer = *output_buffer;
 299         u8                              *length_field;
 300         u8                              temp8;
 301         char                            *temp_pointer = NULL;
 302         acpi_size                       actual_bytes;
 303
 304
 305         ACPI_FUNCTION_TRACE ("rs_address16_stream");
 306
 307
 308         /*
 309          * The descriptor field is static
 310          */
 311         *buffer = 0x88;
 312         buffer += 1;
 313
 314         /*
 315          * Save a pointer to the Length field - to be filled in later
 316          */
 317         length_field = buffer;
 318         buffer += 2;
 319
 320         /*
 321          * Set the Resource Type (Memory, Io, bus_number)
 322          */
 323         temp8 = (u8) (linked_list->data.address16.resource_type & 0x03);
 324         *buffer = temp8;
 325         buffer += 1;
 326
 327         /*
 328          * Set the general flags
 329          */
 330         temp8 = (u8) (linked_list->data.address16.producer_consumer & 0x01);
 331
 332         temp8 |= (linked_list->data.address16.decode & 0x01) << 1;
 333         temp8 |= (linked_list->data.address16.min_address_fixed & 0x01) << 2;
 334         temp8 |= (linked_list->data.address16.max_address_fixed & 0x01) << 3;
 335
 336         *buffer = temp8;
 337         buffer += 1;
 338
 339         /*
 340          * Set the type specific flags
 341          */
 342         temp8 = 0;
 343
 344         if (ACPI_MEMORY_RANGE == linked_list->data.address16.resource_type) {
 345                 temp8 = (u8)
 346                         (linked_list->data.address16.attribute.memory.read_write_attribute &
 347                          0x01);
 348
 349                 temp8 |=
 350                         (linked_list->data.address16.attribute.memory.cache_attribute &
 351                          0x03) << 1;
 352         }
 353         else if (ACPI_IO_RANGE == linked_list->data.address16.resource_type) {
 354                 temp8 = (u8)
 355                         (linked_list->data.address16.attribute.io.range_attribute &
 356                          0x03);
 357                 temp8 |=
 358                         (linked_list->data.address16.attribute.io.translation_attribute &
 359                          0x03) << 4;
 360         }
 361
 362         *buffer = temp8;
 363         buffer += 1;
 364
 365         /*
 366          * Set the address space granularity
 367          */
 368         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.granularity);
 369         buffer += 2;
 370
 371         /*
 372          * Set the address range minimum
 373          */
 374         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.min_address_range);
 375         buffer += 2;
 376
 377         /*
 378          * Set the address range maximum
 379          */
 380         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.max_address_range);
 381         buffer += 2;
 382
 383         /*
 384          * Set the address translation offset
 385          */
 386         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.address_translation_offset);
 387         buffer += 2;
 388
 389         /*
 390          * Set the address length
 391          */
 392         ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.address_length);
 393         buffer += 2;
 394
 395         /*
 396          * Resource Source Index and Resource Source are optional
 397          */
 398         if (0 != linked_list->data.address16.resource_source.string_length) {
 399                 temp8 = (u8) linked_list->data.address16.resource_source.index;
 400
 401                 *buffer = temp8;
 402                 buffer += 1;
 403
 404                 temp_pointer = (char *) buffer;
 405
 406                 /*
 407                  * Copy the string
 408                  */
 409                 ACPI_STRCPY (temp_pointer,
 410                                 linked_list->data.address16.resource_source.string_ptr);
 411
 412                 /*
 413                  * Buffer needs to be set to the length of the sting + one for the
 414                  * terminating null
 415                  */
 416                 buffer += (acpi_size)(ACPI_STRLEN (linked_list->data.address16.resource_source.string_ptr) + 1);
 417         }
 418
 419         /*
 420          * Return the number of bytes consumed in this operation
 421          */
 422         actual_bytes = ACPI_PTR_DIFF (buffer, *output_buffer);
 423         *bytes_consumed = actual_bytes;
 424
 425         /*
 426          * Set the length field to the number of bytes consumed
 427          * minus the header size (3 bytes)
 428          */
 429         actual_bytes -= 3;
 430         ACPI_MOVE_SIZE_TO_16 (length_field, &actual_bytes);
 431         return_ACPI_STATUS (AE_OK);
 432 }
 433
 434
 435 /*******************************************************************************
 436  *
 437  * FUNCTION:    acpi_rs_address32_resource
 438  *
 439  * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
 440  *                                        stream
 441  *              bytes_consumed          - Pointer to where the number of bytes
 442  *                                        consumed the byte_stream_buffer is
 443  *                                        returned
 444  *              output_buffer           - Pointer to the return data buffer
 445  *              structure_size          - Pointer to where the number of bytes
 446  *                                        in the return data struct is returned
 447  *
 448  * RETURN:      Status
 449  *
 450  * DESCRIPTION: Take the resource byte stream and fill out the appropriate
 451  *              structure pointed to by the output_buffer. Return the
 452  *              number of bytes consumed from the byte stream.
 453  *
 454  ******************************************************************************/
 455
 456 acpi_status
 457 acpi_rs_address32_resource (
 458         u8                              *byte_stream_buffer,
 459         acpi_size                       *bytes_consumed,
 460         u8                              **output_buffer,
 461         acpi_size                       *structure_size)
 462 {
 463         u8                              *buffer;
 464         struct acpi_resource            *output_struct= (void *) *output_buffer;
 465         u16                             temp16;
 466         u8                              temp8;
 467         u8                              *temp_ptr;
 468         acpi_size                       struct_size;
 469         u32                             index;
 470
 471
 472         ACPI_FUNCTION_TRACE ("rs_address32_resource");
 473
 474
 475         buffer = byte_stream_buffer;
 476         struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address32);
 477
 478         /*
 479          * Point past the Descriptor to get the number of bytes consumed
 480          */
 481         buffer += 1;
 482         ACPI_MOVE_16_TO_16 (&temp16, buffer);
 483
 484         /* Validate minimum descriptor length */
 485
 486         if (temp16 < 23) {
 487                 return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
 488         }
 489
 490         *bytes_consumed = temp16 + 3;
 491         output_struct->id = ACPI_RSTYPE_ADDRESS32;
 492
 493         /*
 494          * Get the Resource Type (Byte3)
 495          */
 496         buffer += 2;
 497         temp8 = *buffer;
 498
 499         /* Values 0-2 and 0xC0-0xFF are valid */
 500
 501         if ((temp8 > 2) && (temp8 < 0xC0)) {
 502                 return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
 503         }
 504
 505         output_struct->data.address32.resource_type = temp8;
 506
 507         /*
 508          * Get the General Flags (Byte4)
 509          */
 510         buffer += 1;
 511         temp8 = *buffer;
 512
 513         /*
 514          * Producer / Consumer
 515          */
 516         output_struct->data.address32.producer_consumer = temp8 & 0x01;
 517
 518         /*
 519          * Decode
 520          */
 521         output_struct->data.address32.decode = (temp8 >> 1) & 0x01;
 522
 523         /*
 524          * Min Address Fixed
 525          */
 526         output_struct->data.address32.min_address_fixed = (temp8 >> 2) & 0x01;
 527
 528         /*
 529          * Max Address Fixed
 530          */
 531         output_struct->data.address32.max_address_fixed = (temp8 >> 3) & 0x01;
 532
 533         /*
 534          * Get the Type Specific Flags (Byte5)
 535          */
 536         buffer += 1;
 537         temp8 = *buffer;
 538
 539         if (ACPI_MEMORY_RANGE == output_struct->data.address32.resource_type) {
 540                 output_struct->data.address32.attribute.memory.read_write_attribute =
 541                                 (u16) (temp8 & 0x01);
 542
 543                 output_struct->data.address32.attribute.memory.cache_attribute =
 544                                 (u16) ((temp8 >> 1) & 0x03);
 545         }
 546         else {
 547                 if (ACPI_IO_RANGE == output_struct->data.address32.resource_type) {
 548                         output_struct->data.address32.attribute.io.range_attribute =
 549                                 (u16) (temp8 & 0x03);
 550                         output_struct->data.address32.attribute.io.translation_attribute =
 551                                 (u16) ((temp8 >> 4) & 0x03);
 552                 }
 553                 else {
 554                         /* BUS_NUMBER_RANGE == output_struct->Data.Address32.resource_type */
 555                         /* Nothing needs to be filled in */
 556                 }
 557         }
 558
 559         /*
 560          * Get Granularity (Bytes 6-9)
 561          */
 562         buffer += 1;
 563         ACPI_MOVE_32_TO_32 (&output_struct->data.address32.granularity, buffer);
 564
 565         /*
 566          * Get min_address_range (Bytes 10-13)
 567          */
 568         buffer += 4;
 569         ACPI_MOVE_32_TO_32 (&output_struct->data.address32.min_address_range, buffer);
 570
 571         /*
 572          * Get max_address_range (Bytes 14-17)
 573          */
 574         buffer += 4;
 575         ACPI_MOVE_32_TO_32 (&output_struct->data.address32.max_address_range, buffer);
 576
 577         /*
 578          * Get address_translation_offset (Bytes 18-21)
 579          */
 580         buffer += 4;
 581         ACPI_MOVE_32_TO_32 (&output_struct->data.address32.address_translation_offset, buffer);
 582
 583         /*
 584          * Get address_length (Bytes 22-25)
 585          */
 586         buffer += 4;
 587         ACPI_MOVE_32_TO_32 (&output_struct->data.address32.address_length, buffer);
 588
 589         /*
 590          * Resource Source Index (if present)
 591          */
 592         buffer += 4;
 593
 594         /*
 595          * This will leave us pointing to the Resource Source Index
 596          * If it is present, then save it off and calculate the
 597          * pointer to where the null terminated string goes:
 598          *
 599          * Note: Some resource descriptors will have an additional null, so
 600          * we add 1 to the length.
 601          */
 602         if (*bytes_consumed > (26 + 1)) {
 603                 /* Dereference the Index */
 604
 605                 temp8 = *buffer;
 606                 output_struct->data.address32.resource_source.index =
 607                                 (u32) temp8;
 608
 609                 /* Point to the String */
 610
 611                 buffer += 1;
 612
 613                 /* Point the String pointer to the end of this structure */
 614
 615                 output_struct->data.address32.resource_source.string_ptr =
 616                                 (char *)((u8 *)output_struct + struct_size);
 617
 618                 temp_ptr = (u8 *) output_struct->data.address32.resource_source.string_ptr;
 619
 620                 /* Copy the string into the buffer */
 621
 622                 index = 0;
 623                 while (0x00 != *buffer) {
 624                         *temp_ptr = *buffer;
 625
 626                         temp_ptr += 1;
 627                         buffer += 1;
 628                         index += 1;
 629                 }
 630
 631                 /*
 632                  * Add the terminating null
 633                  */
 634                 *temp_ptr = 0x00;
 635                 output_struct->data.address32.resource_source.string_length = index + 1;
 636
 637                 /*
 638                  * In order for the struct_size to fall on a 32-bit boundary,
 639                  * calculate the length of the string and expand the
 640                  * struct_size to the next 32-bit boundary.
 641                  */
 642                 temp8 = (u8) (index + 1);
 643                 struct_size += ACPI_ROUND_UP_to_32_bITS (temp8);
 644         }
 645         else {
 646                 output_struct->data.address32.resource_source.index = 0x00;
 647                 output_struct->data.address32.resource_source.string_length = 0;
 648                 output_struct->data.address32.resource_source.string_ptr = NULL;
 649         }
 650
 651         /*
 652          * Set the Length parameter
 653          */
 654         output_struct->length = (u32) struct_size;
 655
 656         /*
 657          * Return the final size of the structure
 658          */
 659         *structure_size = struct_size;
 660         return_ACPI_STATUS (AE_OK);
 661 }
 662
 663
 664 /*******************************************************************************
 665  *
 666  * FUNCTION:    acpi_rs_address32_stream
 667  *
 668  * PARAMETERS:  linked_list             - Pointer to the resource linked list
 669  *              output_buffer           - Pointer to the user's return buffer
 670  *              bytes_consumed          - Pointer to where the number of bytes
 671  *                                        used in the output_buffer is returned
 672  *
 673  * RETURN:      Status
 674  *
 675  * DESCRIPTION: Take the linked list resource structure and fills in the
 676  *              the appropriate bytes in a byte stream
 677  *
 678  ******************************************************************************/
 679
 680 acpi_status
 681 acpi_rs_address32_stream (
 682         struct acpi_resource            *linked_list,
 683         u8                              **output_buffer,
 684         acpi_size                       *bytes_consumed)
 685 {
 686         u8                              *buffer;
 687         u16                             *length_field;
 688         u8                              temp8;
 689         char                            *temp_pointer;
 690
 691
 692         ACPI_FUNCTION_TRACE ("rs_address32_stream");
 693
 694
 695         buffer = *output_buffer;
 696
 697         /*
 698          * The descriptor field is static
 699          */
 700         *buffer = 0x87;
 701         buffer += 1;
 702
 703         /*
 704          * Set a pointer to the Length field - to be filled in later
 705          */
 706         length_field = ACPI_CAST_PTR (u16, buffer);
 707         buffer += 2;
 708
 709         /*
 710          * Set the Resource Type (Memory, Io, bus_number)
 711          */
 712         temp8 = (u8) (linked_list->data.address32.resource_type & 0x03);
 713
 714         *buffer = temp8;
 715         buffer += 1;
 716
 717         /*
 718          * Set the general flags
 719          */
 720         temp8 = (u8) (linked_list->data.address32.producer_consumer & 0x01);
 721         temp8 |= (linked_list->data.address32.decode & 0x01) << 1;
 722         temp8 |= (linked_list->data.address32.min_address_fixed & 0x01) << 2;
 723         temp8 |= (linked_list->data.address32.max_address_fixed & 0x01) << 3;
 724
 725         *buffer = temp8;
 726         buffer += 1;
 727
 728         /*
 729          * Set the type specific flags
 730          */
 731         temp8 = 0;
 732
 733         if (ACPI_MEMORY_RANGE == linked_list->data.address32.resource_type) {
 734                 temp8 = (u8)
 735                         (linked_list->data.address32.attribute.memory.read_write_attribute &
 736                         0x01);
 737
 738                 temp8 |=
 739                         (linked_list->data.address32.attribute.memory.cache_attribute &
 740                          0x03) << 1;
 741         }
 742         else if (ACPI_IO_RANGE == linked_list->data.address32.resource_type) {
 743                 temp8 = (u8)
 744                         (linked_list->data.address32.attribute.io.range_attribute &
 745                          0x03);
 746                 temp8 |=
 747                         (linked_list->data.address32.attribute.io.translation_attribute &
 748                          0x03) << 4;
 749         }
 750
 751         *buffer = temp8;
 752         buffer += 1;
 753
 754         /*
 755          * Set the address space granularity
 756          */
 757         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.granularity);
 758         buffer += 4;
 759
 760         /*
 761          * Set the address range minimum
 762          */
 763         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.min_address_range);
 764         buffer += 4;
 765
 766         /*
 767          * Set the address range maximum
 768          */
 769         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.max_address_range);
 770         buffer += 4;
 771
 772         /*
 773          * Set the address translation offset
 774          */
 775         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.address_translation_offset);
 776         buffer += 4;
 777
 778         /*
 779          * Set the address length
 780          */
 781         ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.address_length);
 782         buffer += 4;
 783
 784         /*
 785          * Resource Source Index and Resource Source are optional
 786          */
 787         if (0 != linked_list->data.address32.resource_source.string_length) {
 788                 temp8 = (u8) linked_list->data.address32.resource_source.index;
 789
 790                 *buffer = temp8;
 791                 buffer += 1;
 792
 793                 temp_pointer = (char *) buffer;
 794
 795                 /*
 796                  * Copy the string
 797                  */
 798                 ACPI_STRCPY (temp_pointer,
 799                         linked_list->data.address32.resource_source.string_ptr);
 800
 801                 /*
 802                  * Buffer needs to be set to the length of the sting + one for the
 803                  *  terminating null
 804                  */
 805                 buffer += (acpi_size)(ACPI_STRLEN (linked_list->data.address32.resource_source.string_ptr) + 1);
 806         }
 807
 808         /*
 809          * Return the number of bytes consumed in this operation
 810          */
 811         *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
 812
 813         /*
 814          * Set the length field to the number of bytes consumed
 815          *  minus the header size (3 bytes)
 816          */
 817         *length_field = (u16) (*bytes_consumed - 3);
 818         return_ACPI_STATUS (AE_OK);
 819 }
 820
 821
 822 /*******************************************************************************
 823  *
 824  * FUNCTION:    acpi_rs_address64_resource
 825  *
 826  * PARAMETERS:  byte_stream_buffer      - Pointer to the resource input byte
 827  *                                        stream
 828  *              bytes_consumed          - Pointer to where the number of bytes
 829  *                                        consumed the byte_stream_buffer is
 830  *                                        returned
 831  *              output_buffer           - Pointer to the return data buffer
 832  *              structure_size          - Pointer to where the number of bytes
 833  *                                        in the return data struct is returned
 834  *
 835  * RETURN:      Status
 836  *
 837  * DESCRIPTION: Take the resource byte stream and fill out the appropriate
 838  *              structure pointed to by the output_buffer. Return the
 839  *              number of bytes consumed from the byte stream.
 840  *
 841  ******************************************************************************/
 842
 843 acpi_status
 844 acpi_rs_address64_resource (
 845         u8                              *byte_stream_buffer,
 846         acpi_size                       *bytes_consumed,
 847         u8                              **output_buffer,
 848         acpi_size                       *structure_size)
 849 {
 850         u8                              *buffer;
 851         struct acpi_resource            *output_struct = (void *) *output_buffer;
 852         u16                             temp16;
 853         u8                              temp8;
 854         u8                              resource_type;
 855         u8                              *temp_ptr;
 856         acpi_size                       struct_size;
 857         u32                             index;
 858
 859
 860         ACPI_FUNCTION_TRACE ("rs_address64_resource");
 861
 862
 863         buffer = byte_stream_buffer;
 864         struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address64);
 865         resource_type = *buffer;
 866
 867         /*
 868          * Point past the Descriptor to get the number of bytes consumed
 869          */
 870         buffer += 1;
 871         ACPI_MOVE_16_TO_16 (&temp16, buffer);
 872
 873         /* Validate minimum descriptor length */
 874
 875         if (temp16 < 43) {
 876                 return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
 877         }
 878
 879         *bytes_consumed = temp16 + 3;
 880         output_struct->id = ACPI_RSTYPE_ADDRESS64;
 881
 882         /*
 883          * Get the Resource Type (Byte3)
 884          */
 885         buffer += 2;
 886         temp8 = *buffer;
 887
 888         /* Values 0-2 and 0xC0-0xFF are valid */
 889
 890         if ((temp8 > 2) && (temp8 < 0xC0)) {
 891                 return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
 892         }
 893
 894         output_struct->data.address64.resource_type = temp8;
 895
 896         /*
 897          * Get the General Flags (Byte4)
 898          */
 899         buffer += 1;
 900         temp8 = *buffer;
 901
 902         /*
 903          * Producer / Consumer
 904          */
 905         output_struct->data.address64.producer_consumer = temp8 & 0x01;
 906
 907         /*
 908          * Decode
 909          */
 910         output_struct->data.address64.decode = (temp8 >> 1) & 0x01;
 911
 912         /*
 913          * Min Address Fixed
 914          */
 915         output_struct->data.address64.min_address_fixed = (temp8 >> 2) & 0x01;
 916
 917         /*
 918          * Max Address Fixed
 919          */
 920         output_struct->data.address64.max_address_fixed = (temp8 >> 3) & 0x01;
 921
 922         /*
 923          * Get the Type Specific Flags (Byte5)
 924          */
 925         buffer += 1;
 926         temp8 = *buffer;
 927
 928         if (ACPI_MEMORY_RANGE == output_struct->data.address64.resource_type) {
 929                 output_struct->data.address64.attribute.memory.read_write_attribute =
 930                                 (u16) (temp8 & 0x01);
 931
 932                 output_struct->data.address64.attribute.memory.cache_attribute =
 933                                 (u16) ((temp8 >> 1) & 0x03);
 934         }
 935         else {
 936                 if (ACPI_IO_RANGE == output_struct->data.address64.resource_type) {
 937                         output_struct->data.address64.attribute.io.range_attribute =
 938                                 (u16) (temp8 & 0x03);
 939                         output_struct->data.address64.attribute.io.translation_attribute =
 940                                 (u16) ((temp8 >> 4) & 0x03);
 941                 }
 942                 else {
 943                         /* BUS_NUMBER_RANGE == output_struct->Data.Address64.resource_type */
 944                         /* Nothing needs to be filled in */
 945                 }
 946         }
 947
 948         if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
 949                 /* Move past revision_id and Reserved byte */
 950
 951                 buffer += 2;
 952         }
 953
 954         /*
 955          * Get Granularity (Bytes 6-13) or (Bytes 8-15)
 956          */
 957         buffer += 1;
 958         ACPI_MOVE_64_TO_64 (&output_struct->data.address64.granularity, buffer);
 959
 960         /*
 961          * Get min_address_range (Bytes 14-21) or (Bytes 16-23)
 962          */
 963         buffer += 8;
 964         ACPI_MOVE_64_TO_64 (&output_struct->data.address64.min_address_range, buffer);
 965
 966         /*
 967          * Get max_address_range (Bytes 22-29) or (Bytes 24-31)
 968          */
 969         buffer += 8;
 970         ACPI_MOVE_64_TO_64 (&output_struct->data.address64.max_address_range, buffer);
 971
 972         /*
 973          * Get address_translation_offset (Bytes 30-37) or (Bytes 32-39)
 974          */
 975         buffer += 8;
 976         ACPI_MOVE_64_TO_64 (&output_struct->data.address64.address_translation_offset, buffer);
 977
 978         /*
 979          * Get address_length (Bytes 38-45) or (Bytes 40-47)
 980          */
 981         buffer += 8;
 982         ACPI_MOVE_64_TO_64 (&output_struct->data.address64.address_length, buffer);
 983
 984         output_struct->data.address64.resource_source.index = 0x00;
 985         output_struct->data.address64.resource_source.string_length = 0;
 986         output_struct->data.address64.resource_source.string_ptr = NULL;
 987
 988         if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
 989                 /* Get type_specific_attribute (Bytes 48-55) */
 990
 991                 buffer += 8;
 992                 ACPI_MOVE_64_TO_64 (&output_struct->data.address64.type_specific_attributes, buffer);
 993         }
 994         else {
 995                 output_struct->data.address64.type_specific_attributes = 0;
 996
 997                 /*
 998                  * Resource Source Index (if present)
 999                  */
1000                 buffer += 8;
1001
1002                 /*
1003                  * This will leave us pointing to the Resource Source Index
1004                  * If it is present, then save it off and calculate the
1005                  * pointer to where the null terminated string goes:
1006                  * Each Interrupt takes 32-bits + the 5 bytes of the
1007                  * stream that are default.
1008                  *
1009                  * Note: Some resource descriptors will have an additional null, so
1010                  * we add 1 to the length.
1011                  */
1012                 if (*bytes_consumed > (46 + 1)) {
1013                         /* Dereference the Index */
1014
1015                         temp8 = *buffer;
1016                         output_struct->data.address64.resource_source.index =
1017                                         (u32) temp8;
1018
1019                         /* Point to the String */
1020
1021                         buffer += 1;
1022
1023                         /* Point the String pointer to the end of this structure */
1024
1025                         output_struct->data.address64.resource_source.string_ptr =
1026                                         (char *)((u8 *)output_struct + struct_size);
1027
1028                         temp_ptr = (u8 *) output_struct->data.address64.resource_source.string_ptr;
1029
1030                         /* Copy the string into the buffer */
1031
1032                         index = 0;
1033                         while (0x00 != *buffer) {
1034                                 *temp_ptr = *buffer;
1035
1036                                 temp_ptr += 1;
1037                                 buffer += 1;
1038                                 index += 1;
1039                         }
1040
1041                         /*
1042                          * Add the terminating null
1043                          */
1044                         *temp_ptr = 0x00;
1045                         output_struct->data.address64.resource_source.string_length = index + 1;
1046
1047                         /*
1048                          * In order for the struct_size to fall on a 32-bit boundary,
1049                          * calculate the length of the string and expand the
1050                          * struct_size to the next 32-bit boundary.
1051                          */
1052                         temp8 = (u8) (index + 1);
1053                         struct_size += ACPI_ROUND_UP_to_32_bITS (temp8);
1054                 }
1055         }
1056
1057         /*
1058          * Set the Length parameter
1059          */
1060         output_struct->length = (u32) struct_size;
1061
1062         /*
1063          * Return the final size of the structure
1064          */
1065         *structure_size = struct_size;
1066         return_ACPI_STATUS (AE_OK);
1067 }
1068
1069
1070 /*******************************************************************************
1071  *
1072  * FUNCTION:    acpi_rs_address64_stream
1073  *
1074  * PARAMETERS:  linked_list             - Pointer to the resource linked list
1075  *              output_buffer           - Pointer to the user's return buffer
1076  *              bytes_consumed          - Pointer to where the number of bytes
1077  *                                        used in the output_buffer is returned
1078  *
1079  * RETURN:      Status
1080  *
1081  * DESCRIPTION: Take the linked list resource structure and fills in the
1082  *              the appropriate bytes in a byte stream
1083  *
1084  ******************************************************************************/
1085
1086 acpi_status
1087 acpi_rs_address64_stream (
1088         struct acpi_resource            *linked_list,
1089         u8                              **output_buffer,
1090         acpi_size                       *bytes_consumed)
1091 {
1092         u8                              *buffer;
1093         u16                             *length_field;
1094         u8                              temp8;
1095         char                            *temp_pointer;
1096
1097
1098         ACPI_FUNCTION_TRACE ("rs_address64_stream");
1099
1100
1101         buffer = *output_buffer;
1102
1103         /*
1104          * The descriptor field is static
1105          */
1106         *buffer = 0x8A;
1107         buffer += 1;
1108
1109         /*
1110          * Set a pointer to the Length field - to be filled in later
1111          */
1112         length_field = ACPI_CAST_PTR (u16, buffer);
1113         buffer += 2;
1114
1115         /*
1116          * Set the Resource Type (Memory, Io, bus_number)
1117          */
1118         temp8 = (u8) (linked_list->data.address64.resource_type & 0x03);
1119
1120         *buffer = temp8;
1121         buffer += 1;
1122
1123         /*
1124          * Set the general flags
1125          */
1126         temp8 = (u8) (linked_list->data.address64.producer_consumer & 0x01);
1127         temp8 |= (linked_list->data.address64.decode & 0x01) << 1;
1128         temp8 |= (linked_list->data.address64.min_address_fixed & 0x01) << 2;
1129         temp8 |= (linked_list->data.address64.max_address_fixed & 0x01) << 3;
1130
1131         *buffer = temp8;
1132         buffer += 1;
1133
1134         /*
1135          * Set the type specific flags
1136          */
1137         temp8 = 0;
1138
1139         if (ACPI_MEMORY_RANGE == linked_list->data.address64.resource_type) {
1140                 temp8 = (u8)
1141                         (linked_list->data.address64.attribute.memory.read_write_attribute &
1142                         0x01);
1143
1144                 temp8 |=
1145                         (linked_list->data.address64.attribute.memory.cache_attribute &
1146                          0x03) << 1;
1147         }
1148         else if (ACPI_IO_RANGE == linked_list->data.address64.resource_type) {
1149                 temp8 = (u8)
1150                         (linked_list->data.address64.attribute.io.range_attribute &
1151                          0x03);
1152                 temp8 |=
1153                         (linked_list->data.address64.attribute.io.range_attribute &
1154                          0x03) << 4;
1155         }
1156
1157         *buffer = temp8;
1158         buffer += 1;
1159
1160         /*
1161          * Set the address space granularity
1162          */
1163         ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.granularity);
1164         buffer += 8;
1165
1166         /*
1167          * Set the address range minimum
1168          */
1169         ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.min_address_range);
1170         buffer += 8;
1171
1172         /*
1173          * Set the address range maximum
1174          */
1175         ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.max_address_range);
1176         buffer += 8;
1177
1178         /*
1179          * Set the address translation offset
1180          */
1181         ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.address_translation_offset);
1182         buffer += 8;
1183
1184         /*
1185          * Set the address length
1186          */
1187         ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.address_length);
1188         buffer += 8;
1189
1190         /*
1191          * Resource Source Index and Resource Source are optional
1192          */
1193         if (0 != linked_list->data.address64.resource_source.string_length) {
1194                 temp8 = (u8) linked_list->data.address64.resource_source.index;
1195
1196                 *buffer = temp8;
1197                 buffer += 1;
1198
1199                 temp_pointer = (char *) buffer;
1200
1201                 /*
1202                  * Copy the string
1203                  */
1204                 ACPI_STRCPY (temp_pointer, linked_list->data.address64.resource_source.string_ptr);
1205
1206                 /*
1207                  * Buffer needs to be set to the length of the sting + one for the
1208                  * terminating null
1209                  */
1210                 buffer += (acpi_size)(ACPI_STRLEN (linked_list->data.address64.resource_source.string_ptr) + 1);
1211         }
1212
1213         /*
1214          * Return the number of bytes consumed in this operation
1215          */
1216         *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
1217
1218         /*
1219          * Set the length field to the number of bytes consumed
1220          * minus the header size (3 bytes)
1221          */
1222         *length_field = (u16) (*bytes_consumed - 3);
1223         return_ACPI_STATUS (AE_OK);
1224 }
1225