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 #include <acpi/acpi.h>
  45 #include <acpi/acresrc.h>
  46
  47 #define _COMPONENT          ACPI_RESOURCES
  48 ACPI_MODULE_NAME("rsmemory")
  49
  50 /*******************************************************************************
  51  *
  52  * FUNCTION:    acpi_rs_get_memory24
  53  *
  54  * PARAMETERS:  Aml                 - Pointer to the AML resource descriptor
  55  *              aml_resource_length - Length of the resource from the AML header
  56  *              Resource            - Where the internal resource is returned
  57  *
  58  * RETURN:      Status
  59  *
  60  * DESCRIPTION: Convert a raw AML resource descriptor to the corresponding
  61  *              internal resource descriptor, simplifying bitflags and handling
  62  *              alignment and endian issues if necessary.
  63  *
  64  ******************************************************************************/
  65 acpi_status
  66 acpi_rs_get_memory24(union aml_resource * aml,
  67                      u16 aml_resource_length, struct acpi_resource * resource)
  68 {
  69         ACPI_FUNCTION_TRACE("rs_get_memory24");
  70
  71         /* Get the Read/Write bit */
  72
  73         resource->data.memory24.read_write_attribute =
  74             (aml->memory24.information & 0x01);
  75
  76         /*
  77          * Get the following contiguous fields from the AML descriptor:
  78          * Minimum Base Address
  79          * Maximum Base Address
  80          * Address Base Alignment
  81          * Range Length
  82          */
  83         acpi_rs_move_data(&resource->data.memory24.minimum,
  84                           &aml->memory24.minimum, 4, ACPI_MOVE_TYPE_16_TO_32);
  85
  86         /* Complete the resource header */
  87
  88         resource->type = ACPI_RESOURCE_TYPE_MEMORY24;
  89         resource->length = ACPI_SIZEOF_RESOURCE(struct acpi_resource_memory24);
  90         return_ACPI_STATUS(AE_OK);
  91 }
  92
  93 /*******************************************************************************
  94  *
  95  * FUNCTION:    acpi_rs_set_memory24
  96  *
  97  * PARAMETERS:  Resource            - Pointer to the resource descriptor
  98  *              Aml                 - Where the AML descriptor is returned
  99  *
 100  * RETURN:      Status
 101  *
 102  * DESCRIPTION: Convert an internal resource descriptor to the corresponding
 103  *              external AML resource descriptor.
 104  *
 105  ******************************************************************************/
 106
 107 acpi_status
 108 acpi_rs_set_memory24(struct acpi_resource *resource, union aml_resource *aml)
 109 {
 110         ACPI_FUNCTION_TRACE("rs_set_memory24");
 111
 112         /* Set the Information Byte */
 113
 114         aml->memory24.information = (u8)
 115             (resource->data.memory24.read_write_attribute & 0x01);
 116
 117         /*
 118          * Set the following contiguous fields in the AML descriptor:
 119          * Minimum Base Address
 120          * Maximum Base Address
 121          * Address Base Alignment
 122          * Range Length
 123          */
 124         acpi_rs_move_data(&aml->memory24.minimum,
 125                           &resource->data.memory24.minimum, 4,
 126                           ACPI_MOVE_TYPE_32_TO_16);
 127
 128         /* Complete the AML descriptor header */
 129
 130         acpi_rs_set_resource_header(ACPI_RESOURCE_NAME_MEMORY24,
 131                                     sizeof(struct aml_resource_memory24), aml);
 132         return_ACPI_STATUS(AE_OK);
 133 }
 134
 135 /*******************************************************************************
 136  *
 137  * FUNCTION:    acpi_rs_get_memory32
 138  *
 139  * PARAMETERS:  Aml                 - Pointer to the AML resource descriptor
 140  *              aml_resource_length - Length of the resource from the AML header
 141  *              Resource            - Where the internal resource is returned
 142  *
 143  * RETURN:      Status
 144  *
 145  * DESCRIPTION: Convert a raw AML resource descriptor to the corresponding
 146  *              internal resource descriptor, simplifying bitflags and handling
 147  *              alignment and endian issues if necessary.
 148  *
 149  ******************************************************************************/
 150
 151 acpi_status
 152 acpi_rs_get_memory32(union aml_resource *aml,
 153                      u16 aml_resource_length, struct acpi_resource *resource)
 154 {
 155         ACPI_FUNCTION_TRACE("rs_get_memory32");
 156
 157         /* Get the Read/Write bit */
 158
 159         resource->data.memory32.read_write_attribute =
 160             (aml->memory32.information & 0x01);
 161
 162         /*
 163          * Get the following contiguous fields from the AML descriptor:
 164          * Minimum Base Address
 165          * Maximum Base Address
 166          * Address Base Alignment
 167          * Range Length
 168          */
 169         acpi_rs_move_data(&resource->data.memory32.minimum,
 170                           &aml->memory32.minimum, 4, ACPI_MOVE_TYPE_32_TO_32);
 171
 172         /* Complete the resource header */
 173
 174         resource->type = ACPI_RESOURCE_TYPE_MEMORY32;
 175         resource->length = ACPI_SIZEOF_RESOURCE(struct acpi_resource_memory32);
 176         return_ACPI_STATUS(AE_OK);
 177 }
 178
 179 /*******************************************************************************
 180  *
 181  * FUNCTION:    acpi_rs_set_memory32
 182  *
 183  * PARAMETERS:  Resource            - Pointer to the resource descriptor
 184  *              Aml                 - Where the AML descriptor is returned
 185  *
 186  * RETURN:      Status
 187  *
 188  * DESCRIPTION: Convert an internal resource descriptor to the corresponding
 189  *              external AML resource descriptor.
 190  *
 191  ******************************************************************************/
 192
 193 acpi_status
 194 acpi_rs_set_memory32(struct acpi_resource *resource, union aml_resource *aml)
 195 {
 196         ACPI_FUNCTION_TRACE("rs_set_memory32");
 197
 198         /* Set the Information Byte */
 199
 200         aml->memory32.information = (u8)
 201             (resource->data.memory32.read_write_attribute & 0x01);
 202
 203         /*
 204          * Set the following contiguous fields in the AML descriptor:
 205          * Minimum Base Address
 206          * Maximum Base Address
 207          * Address Base Alignment
 208          * Range Length
 209          */
 210         acpi_rs_move_data(&aml->memory32.minimum,
 211                           &resource->data.memory32.minimum, 4,
 212                           ACPI_MOVE_TYPE_32_TO_32);
 213
 214         /* Complete the AML descriptor header */
 215
 216         acpi_rs_set_resource_header(ACPI_RESOURCE_NAME_MEMORY32,
 217                                     sizeof(struct aml_resource_memory32), aml);
 218         return_ACPI_STATUS(AE_OK);
 219 }
 220
 221 /*******************************************************************************
 222  *
 223  * FUNCTION:    acpi_rs_get_fixed_memory32
 224  *
 225  * PARAMETERS:  Aml                 - Pointer to the AML resource descriptor
 226  *              aml_resource_length - Length of the resource from the AML header
 227  *              Resource            - Where the internal resource is returned
 228  *
 229  * RETURN:      Status
 230  *
 231  * DESCRIPTION: Convert a raw AML resource descriptor to the corresponding
 232  *              internal resource descriptor, simplifying bitflags and handling
 233  *              alignment and endian issues if necessary.
 234  *
 235  ******************************************************************************/
 236
 237 acpi_status
 238 acpi_rs_get_fixed_memory32(union aml_resource *aml,
 239                            u16 aml_resource_length,
 240                            struct acpi_resource *resource)
 241 {
 242         ACPI_FUNCTION_TRACE("rs_get_fixed_memory32");
 243
 244         /* Get the Read/Write bit */
 245
 246         resource->data.fixed_memory32.read_write_attribute =
 247             (aml->fixed_memory32.information & 0x01);
 248
 249         /*
 250          * Get the following contiguous fields from the AML descriptor:
 251          * Base Address
 252          * Range Length
 253          */
 254         ACPI_MOVE_32_TO_32(&resource->data.fixed_memory32.address,
 255                            &aml->fixed_memory32.address);
 256         ACPI_MOVE_32_TO_32(&resource->data.fixed_memory32.address_length,
 257                            &aml->fixed_memory32.address_length);
 258
 259         /* Complete the resource header */
 260
 261         resource->type = ACPI_RESOURCE_TYPE_FIXED_MEMORY32;
 262         resource->length =
 263             ACPI_SIZEOF_RESOURCE(struct acpi_resource_fixed_memory32);
 264         return_ACPI_STATUS(AE_OK);
 265 }
 266
 267 /*******************************************************************************
 268  *
 269  * FUNCTION:    acpi_rs_set_fixed_memory32
 270  *
 271  * PARAMETERS:  Resource            - Pointer to the resource descriptor
 272  *              Aml                 - Where the AML descriptor is returned
 273  *
 274  * RETURN:      Status
 275  *
 276  * DESCRIPTION: Convert an internal resource descriptor to the corresponding
 277  *              external AML resource descriptor.
 278  *
 279  ******************************************************************************/
 280
 281 acpi_status
 282 acpi_rs_set_fixed_memory32(struct acpi_resource *resource,
 283                            union aml_resource *aml)
 284 {
 285         ACPI_FUNCTION_TRACE("rs_set_fixed_memory32");
 286
 287         /* Set the Information Byte */
 288
 289         aml->fixed_memory32.information = (u8)
 290             (resource->data.fixed_memory32.read_write_attribute & 0x01);
 291
 292         /*
 293          * Set the following contiguous fields in the AML descriptor:
 294          * Base Address
 295          * Range Length
 296          */
 297         ACPI_MOVE_32_TO_32(&aml->fixed_memory32.address,
 298                            &resource->data.fixed_memory32.address);
 299         ACPI_MOVE_32_TO_32(&aml->fixed_memory32.address_length,
 300                            &resource->data.fixed_memory32.address_length);
 301
 302         /* Complete the AML descriptor header */
 303
 304         acpi_rs_set_resource_header(ACPI_RESOURCE_NAME_FIXED_MEMORY32,
 305                                     sizeof(struct aml_resource_fixed_memory32),
 306                                     aml);
 307         return_ACPI_STATUS(AE_OK);
 308 }