err.no 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 - 2008, Intel Corp.
   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 #include <acpi/acpi.h>
  45 #include <acpi/acresrc.h>
  46
  47 #define _COMPONENT          ACPI_RESOURCES
  48 ACPI_MODULE_NAME("rsaddr")
  49
  50 /*******************************************************************************
  51  *
  52  * acpi_rs_convert_address16 - All WORD (16-bit) address resources
  53  *
  54  ******************************************************************************/
  55 struct acpi_rsconvert_info acpi_rs_convert_address16[5] = {
  56         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS16,
  57          ACPI_RS_SIZE(struct acpi_resource_address16),
  58          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address16)},
  59
  60         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS16,
  61          sizeof(struct aml_resource_address16),
  62          0},
  63
  64         /* Resource Type, General Flags, and Type-Specific Flags */
  65
  66         {ACPI_RSC_ADDRESS, 0, 0, 0},
  67
  68         /*
  69          * These fields are contiguous in both the source and destination:
  70          * Address Granularity
  71          * Address Range Minimum
  72          * Address Range Maximum
  73          * Address Translation Offset
  74          * Address Length
  75          */
  76         {ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.address16.granularity),
  77          AML_OFFSET(address16.granularity),
  78          5},
  79
  80         /* Optional resource_source (Index and String) */
  81
  82         {ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address16.resource_source),
  83          0,
  84          sizeof(struct aml_resource_address16)}
  85 };
  86
  87 /*******************************************************************************
  88  *
  89  * acpi_rs_convert_address32 - All DWORD (32-bit) address resources
  90  *
  91  ******************************************************************************/
  92
  93 struct acpi_rsconvert_info acpi_rs_convert_address32[5] = {
  94         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS32,
  95          ACPI_RS_SIZE(struct acpi_resource_address32),
  96          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address32)},
  97
  98         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS32,
  99          sizeof(struct aml_resource_address32),
 100          0},
 101
 102         /* Resource Type, General Flags, and Type-Specific Flags */
 103
 104         {ACPI_RSC_ADDRESS, 0, 0, 0},
 105
 106         /*
 107          * These fields are contiguous in both the source and destination:
 108          * Address Granularity
 109          * Address Range Minimum
 110          * Address Range Maximum
 111          * Address Translation Offset
 112          * Address Length
 113          */
 114         {ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.address32.granularity),
 115          AML_OFFSET(address32.granularity),
 116          5},
 117
 118         /* Optional resource_source (Index and String) */
 119
 120         {ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address32.resource_source),
 121          0,
 122          sizeof(struct aml_resource_address32)}
 123 };
 124
 125 /*******************************************************************************
 126  *
 127  * acpi_rs_convert_address64 - All QWORD (64-bit) address resources
 128  *
 129  ******************************************************************************/
 130
 131 struct acpi_rsconvert_info acpi_rs_convert_address64[5] = {
 132         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS64,
 133          ACPI_RS_SIZE(struct acpi_resource_address64),
 134          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address64)},
 135
 136         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS64,
 137          sizeof(struct aml_resource_address64),
 138          0},
 139
 140         /* Resource Type, General Flags, and Type-Specific Flags */
 141
 142         {ACPI_RSC_ADDRESS, 0, 0, 0},
 143
 144         /*
 145          * These fields are contiguous in both the source and destination:
 146          * Address Granularity
 147          * Address Range Minimum
 148          * Address Range Maximum
 149          * Address Translation Offset
 150          * Address Length
 151          */
 152         {ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.address64.granularity),
 153          AML_OFFSET(address64.granularity),
 154          5},
 155
 156         /* Optional resource_source (Index and String) */
 157
 158         {ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address64.resource_source),
 159          0,
 160          sizeof(struct aml_resource_address64)}
 161 };
 162
 163 /*******************************************************************************
 164  *
 165  * acpi_rs_convert_ext_address64 - All Extended (64-bit) address resources
 166  *
 167  ******************************************************************************/
 168
 169 struct acpi_rsconvert_info acpi_rs_convert_ext_address64[5] = {
 170         {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64,
 171          ACPI_RS_SIZE(struct acpi_resource_extended_address64),
 172          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_address64)},
 173
 174         {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64,
 175          sizeof(struct aml_resource_extended_address64),
 176          0},
 177
 178         /* Resource Type, General Flags, and Type-Specific Flags */
 179
 180         {ACPI_RSC_ADDRESS, 0, 0, 0},
 181
 182         /* Revision ID */
 183
 184         {ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.ext_address64.revision_iD),
 185          AML_OFFSET(ext_address64.revision_iD),
 186          1},
 187         /*
 188          * These fields are contiguous in both the source and destination:
 189          * Address Granularity
 190          * Address Range Minimum
 191          * Address Range Maximum
 192          * Address Translation Offset
 193          * Address Length
 194          * Type-Specific Attribute
 195          */
 196         {ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.ext_address64.granularity),
 197          AML_OFFSET(ext_address64.granularity),
 198          6}
 199 };
 200
 201 /*******************************************************************************
 202  *
 203  * acpi_rs_convert_general_flags - Flags common to all address descriptors
 204  *
 205  ******************************************************************************/
 206
 207 static struct acpi_rsconvert_info acpi_rs_convert_general_flags[6] = {
 208         {ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.flags),
 209          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_general_flags)},
 210
 211         /* Resource Type (Memory, Io, bus_number, etc.) */
 212
 213         {ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.address.resource_type),
 214          AML_OFFSET(address.resource_type),
 215          1},
 216
 217         /* General Flags - Consume, Decode, min_fixed, max_fixed */
 218
 219         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.producer_consumer),
 220          AML_OFFSET(address.flags),
 221          0},
 222
 223         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.decode),
 224          AML_OFFSET(address.flags),
 225          1},
 226
 227         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.min_address_fixed),
 228          AML_OFFSET(address.flags),
 229          2},
 230
 231         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.max_address_fixed),
 232          AML_OFFSET(address.flags),
 233          3}
 234 };
 235
 236 /*******************************************************************************
 237  *
 238  * acpi_rs_convert_mem_flags - Flags common to Memory address descriptors
 239  *
 240  ******************************************************************************/
 241
 242 static struct acpi_rsconvert_info acpi_rs_convert_mem_flags[5] = {
 243         {ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.specific_flags),
 244          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_mem_flags)},
 245
 246         /* Memory-specific flags */
 247
 248         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.write_protect),
 249          AML_OFFSET(address.specific_flags),
 250          0},
 251
 252         {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.caching),
 253          AML_OFFSET(address.specific_flags),
 254          1},
 255
 256         {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.range_type),
 257          AML_OFFSET(address.specific_flags),
 258          3},
 259
 260         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.translation),
 261          AML_OFFSET(address.specific_flags),
 262          5}
 263 };
 264
 265 /*******************************************************************************
 266  *
 267  * acpi_rs_convert_io_flags - Flags common to I/O address descriptors
 268  *
 269  ******************************************************************************/
 270
 271 static struct acpi_rsconvert_info acpi_rs_convert_io_flags[4] = {
 272         {ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.specific_flags),
 273          ACPI_RSC_TABLE_SIZE(acpi_rs_convert_io_flags)},
 274
 275         /* I/O-specific flags */
 276
 277         {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.io.range_type),
 278          AML_OFFSET(address.specific_flags),
 279          0},
 280
 281         {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.io.translation),
 282          AML_OFFSET(address.specific_flags),
 283          4},
 284
 285         {ACPI_RSC_1BITFLAG,
 286          ACPI_RS_OFFSET(data.address.info.io.translation_type),
 287          AML_OFFSET(address.specific_flags),
 288          5}
 289 };
 290
 291 /*******************************************************************************
 292  *
 293  * FUNCTION:    acpi_rs_get_address_common
 294  *
 295  * PARAMETERS:  Resource            - Pointer to the internal resource struct
 296  *              Aml                 - Pointer to the AML resource descriptor
 297  *
 298  * RETURN:      TRUE if the resource_type field is OK, FALSE otherwise
 299  *
 300  * DESCRIPTION: Convert common flag fields from a raw AML resource descriptor
 301  *              to an internal resource descriptor
 302  *
 303  ******************************************************************************/
 304
 305 u8
 306 acpi_rs_get_address_common(struct acpi_resource *resource,
 307                            union aml_resource *aml)
 308 {
 309         ACPI_FUNCTION_ENTRY();
 310
 311         /* Validate the Resource Type */
 312
 313         if ((aml->address.resource_type > 2)
 314             && (aml->address.resource_type < 0xC0)) {
 315                 return (FALSE);
 316         }
 317
 318         /* Get the Resource Type and General Flags */
 319
 320         (void)acpi_rs_convert_aml_to_resource(resource, aml,
 321                                               acpi_rs_convert_general_flags);
 322
 323         /* Get the Type-Specific Flags (Memory and I/O descriptors only) */
 324
 325         if (resource->data.address.resource_type == ACPI_MEMORY_RANGE) {
 326                 (void)acpi_rs_convert_aml_to_resource(resource, aml,
 327                                                       acpi_rs_convert_mem_flags);
 328         } else if (resource->data.address.resource_type == ACPI_IO_RANGE) {
 329                 (void)acpi_rs_convert_aml_to_resource(resource, aml,
 330                                                       acpi_rs_convert_io_flags);
 331         } else {
 332                 /* Generic resource type, just grab the type_specific byte */
 333
 334                 resource->data.address.info.type_specific =
 335                     aml->address.specific_flags;
 336         }
 337
 338         return (TRUE);
 339 }
 340
 341 /*******************************************************************************
 342  *
 343  * FUNCTION:    acpi_rs_set_address_common
 344  *
 345  * PARAMETERS:  Aml                 - Pointer to the AML resource descriptor
 346  *              Resource            - Pointer to the internal resource struct
 347  *
 348  * RETURN:      None
 349  *
 350  * DESCRIPTION: Convert common flag fields from a resource descriptor to an
 351  *              AML descriptor
 352  *
 353  ******************************************************************************/
 354
 355 void
 356 acpi_rs_set_address_common(union aml_resource *aml,
 357                            struct acpi_resource *resource)
 358 {
 359         ACPI_FUNCTION_ENTRY();
 360
 361         /* Set the Resource Type and General Flags */
 362
 363         (void)acpi_rs_convert_resource_to_aml(resource, aml,
 364                                               acpi_rs_convert_general_flags);
 365
 366         /* Set the Type-Specific Flags (Memory and I/O descriptors only) */
 367
 368         if (resource->data.address.resource_type == ACPI_MEMORY_RANGE) {
 369                 (void)acpi_rs_convert_resource_to_aml(resource, aml,
 370                                                       acpi_rs_convert_mem_flags);
 371         } else if (resource->data.address.resource_type == ACPI_IO_RANGE) {
 372                 (void)acpi_rs_convert_resource_to_aml(resource, aml,
 373                                                       acpi_rs_convert_io_flags);
 374         } else {
 375                 /* Generic resource type, just copy the type_specific byte */
 376
 377                 aml->address.specific_flags =
 378                     resource->data.address.info.type_specific;
 379         }
 380 }