drivers/acpi/utilities/utinit.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utinit - Common ACPI subsystem initialization
   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/acnamesp.h>
  47 #include <acpi/acevents.h>
  48
  49 #define _COMPONENT          ACPI_UTILITIES
  50          ACPI_MODULE_NAME    ("utinit")
  51
  52
  53 /*******************************************************************************
  54  *
  55  * FUNCTION:    acpi_ut_fadt_register_error
  56  *
  57  * PARAMETERS:  *register_name          - Pointer to string identifying register
  58  *              Value                   - Actual register contents value
  59  *              acpi_test_spec_section  - TDS section containing assertion
  60  *              acpi_assertion          - Assertion number being tested
  61  *
  62  * RETURN:      AE_BAD_VALUE
  63  *
  64  * DESCRIPTION: Display failure message and link failure to TDS assertion
  65  *
  66  ******************************************************************************/
  67
  68 static void
  69 acpi_ut_fadt_register_error (
  70         char                            *register_name,
  71         u32                             value,
  72         acpi_size                       offset)
  73 {
  74
  75         ACPI_REPORT_WARNING (
  76                 ("Invalid FADT value %s=%X at offset %X FADT=%p\n",
  77                 register_name, value, (u32) offset, acpi_gbl_FADT));
  78 }
  79
  80
  81 /******************************************************************************
  82  *
  83  * FUNCTION:    acpi_ut_validate_fadt
  84  *
  85  * PARAMETERS:  None
  86  *
  87  * RETURN:      Status
  88  *
  89  * DESCRIPTION: Validate various ACPI registers in the FADT
  90  *
  91  ******************************************************************************/
  92
  93 acpi_status
  94 acpi_ut_validate_fadt (
  95         void)
  96 {
  97
  98         /*
  99          * Verify Fixed ACPI Description Table fields,
 100          * but don't abort on any problems, just display error
 101          */
 102         if (acpi_gbl_FADT->pm1_evt_len < 4) {
 103                 acpi_ut_fadt_register_error ("PM1_EVT_LEN",
 104                                   (u32) acpi_gbl_FADT->pm1_evt_len,
 105                                   ACPI_FADT_OFFSET (pm1_evt_len));
 106         }
 107
 108         if (!acpi_gbl_FADT->pm1_cnt_len) {
 109                 acpi_ut_fadt_register_error ("PM1_CNT_LEN", 0,
 110                                   ACPI_FADT_OFFSET (pm1_cnt_len));
 111         }
 112
 113         if (!acpi_gbl_FADT->xpm1a_evt_blk.address) {
 114                 acpi_ut_fadt_register_error ("X_PM1a_EVT_BLK", 0,
 115                                   ACPI_FADT_OFFSET (xpm1a_evt_blk.address));
 116         }
 117
 118         if (!acpi_gbl_FADT->xpm1a_cnt_blk.address) {
 119                 acpi_ut_fadt_register_error ("X_PM1a_CNT_BLK", 0,
 120                                   ACPI_FADT_OFFSET (xpm1a_cnt_blk.address));
 121         }
 122
 123         if (!acpi_gbl_FADT->xpm_tmr_blk.address) {
 124                 acpi_ut_fadt_register_error ("X_PM_TMR_BLK", 0,
 125                                   ACPI_FADT_OFFSET (xpm_tmr_blk.address));
 126         }
 127
 128         if ((acpi_gbl_FADT->xpm2_cnt_blk.address &&
 129                 !acpi_gbl_FADT->pm2_cnt_len)) {
 130                 acpi_ut_fadt_register_error ("PM2_CNT_LEN",
 131                                   (u32) acpi_gbl_FADT->pm2_cnt_len,
 132                                   ACPI_FADT_OFFSET (pm2_cnt_len));
 133         }
 134
 135         if (acpi_gbl_FADT->pm_tm_len < 4) {
 136                 acpi_ut_fadt_register_error ("PM_TM_LEN",
 137                                   (u32) acpi_gbl_FADT->pm_tm_len,
 138                                   ACPI_FADT_OFFSET (pm_tm_len));
 139         }
 140
 141         /* Length of GPE blocks must be a multiple of 2 */
 142
 143         if (acpi_gbl_FADT->xgpe0_blk.address &&
 144                 (acpi_gbl_FADT->gpe0_blk_len & 1)) {
 145                 acpi_ut_fadt_register_error ("(x)GPE0_BLK_LEN",
 146                                   (u32) acpi_gbl_FADT->gpe0_blk_len,
 147                                   ACPI_FADT_OFFSET (gpe0_blk_len));
 148         }
 149
 150         if (acpi_gbl_FADT->xgpe1_blk.address &&
 151                 (acpi_gbl_FADT->gpe1_blk_len & 1)) {
 152                 acpi_ut_fadt_register_error ("(x)GPE1_BLK_LEN",
 153                                   (u32) acpi_gbl_FADT->gpe1_blk_len,
 154                                   ACPI_FADT_OFFSET (gpe1_blk_len));
 155         }
 156
 157         return (AE_OK);
 158 }
 159
 160
 161 /******************************************************************************
 162  *
 163  * FUNCTION:    acpi_ut_terminate
 164  *
 165  * PARAMETERS:  none
 166  *
 167  * RETURN:      none
 168  *
 169  * DESCRIPTION: free global memory
 170  *
 171  ******************************************************************************/
 172
 173 void
 174 acpi_ut_terminate (void)
 175 {
 176         struct acpi_gpe_block_info      *gpe_block;
 177         struct acpi_gpe_block_info      *next_gpe_block;
 178         struct acpi_gpe_xrupt_info      *gpe_xrupt_info;
 179         struct acpi_gpe_xrupt_info      *next_gpe_xrupt_info;
 180
 181
 182         ACPI_FUNCTION_TRACE ("ut_terminate");
 183
 184
 185         /* Free global tables, etc. */
 186
 187
 188         /* Free global GPE blocks and related info structures */
 189
 190         gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
 191         while (gpe_xrupt_info) {
 192                 gpe_block = gpe_xrupt_info->gpe_block_list_head;
 193                 while (gpe_block) {
 194                         next_gpe_block = gpe_block->next;
 195                         ACPI_MEM_FREE (gpe_block->event_info);
 196                         ACPI_MEM_FREE (gpe_block->register_info);
 197                         ACPI_MEM_FREE (gpe_block);
 198
 199                         gpe_block = next_gpe_block;
 200                 }
 201                 next_gpe_xrupt_info = gpe_xrupt_info->next;
 202                 ACPI_MEM_FREE (gpe_xrupt_info);
 203                 gpe_xrupt_info = next_gpe_xrupt_info;
 204         }
 205
 206         return_VOID;
 207 }
 208
 209
 210 /*******************************************************************************
 211  *
 212  * FUNCTION:    acpi_ut_subsystem_shutdown
 213  *
 214  * PARAMETERS:  none
 215  *
 216  * RETURN:      none
 217  *
 218  * DESCRIPTION: Shutdown the various subsystems.  Don't delete the mutex
 219  *              objects here -- because the AML debugger may be still running.
 220  *
 221  ******************************************************************************/
 222
 223 void
 224 acpi_ut_subsystem_shutdown (void)
 225 {
 226
 227         ACPI_FUNCTION_TRACE ("ut_subsystem_shutdown");
 228
 229         /* Just exit if subsystem is already shutdown */
 230
 231         if (acpi_gbl_shutdown) {
 232                 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "ACPI Subsystem is already terminated\n"));
 233                 return_VOID;
 234         }
 235
 236         /* Subsystem appears active, go ahead and shut it down */
 237
 238         acpi_gbl_shutdown = TRUE;
 239         ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Shutting down ACPI Subsystem...\n"));
 240
 241         /* Close the acpi_event Handling */
 242
 243         acpi_ev_terminate ();
 244
 245         /* Close the Namespace */
 246
 247         acpi_ns_terminate ();
 248
 249         /* Close the globals */
 250
 251         acpi_ut_terminate ();
 252
 253         /* Purge the local caches */
 254
 255         (void) acpi_purge_cached_objects ();
 256
 257         /* Debug only - display leftover memory allocation, if any */
 258
 259 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 260         acpi_ut_dump_allocations (ACPI_UINT32_MAX, NULL);
 261 #endif
 262
 263         return_VOID;
 264 }
 265
 266