usr/src/uts/i86pc/io/acpi/acpidev/acpidev_memory.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2009-2010, Intel Corporation.
  23  * All rights reserved.
  24  */
  25
  26 #include <sys/types.h>
  27 #include <sys/atomic.h>
  28 #include <sys/sunddi.h>
  29 #include <sys/sunndi.h>
  30 #include <sys/acpi/acpi.h>
  31 #include <sys/acpica.h>
  32 #include <sys/acpidev.h>
  33 #include <sys/acpidev_rsc.h>
  34 #include <sys/acpidev_dr.h>
  35 #include <sys/acpidev_impl.h>
  36
  37 static ACPI_STATUS acpidev_memory_probe(acpidev_walk_info_t *infop);
  38 static acpidev_filter_result_t acpidev_memory_filter(
  39     acpidev_walk_info_t *infop, char *devname, int maxlen);
  40 static ACPI_STATUS acpidev_memory_init(acpidev_walk_info_t *infop);
  41
  42 /*
  43  * Default class driver for ACPI memory objects.
  44  */
  45 acpidev_class_t acpidev_class_memory = {
  46         0,                              /* adc_refcnt */
  47         ACPIDEV_CLASS_REV1,             /* adc_version */
  48         ACPIDEV_CLASS_ID_MEMORY,        /* adc_class_id */
  49         "ACPI memory",                  /* adc_class_name */
  50         ACPIDEV_TYPE_MEMORY,            /* adc_dev_type */
  51         NULL,                           /* adc_private */
  52         NULL,                           /* adc_pre_probe */
  53         NULL,                           /* adc_post_probe */
  54         acpidev_memory_probe,           /* adc_probe */
  55         acpidev_memory_filter,          /* adc_filter */
  56         acpidev_memory_init,            /* adc_init */
  57         NULL,                           /* adc_fini */
  58 };
  59
  60 /*
  61  * List of class drivers which will be called in order when handling
  62  * children of ACPI memory objects.
  63  */
  64 acpidev_class_list_t *acpidev_class_list_memory = NULL;
  65
  66 static char *acpidev_memory_device_ids[] = {
  67         ACPIDEV_HID_MEMORY,
  68 };
  69
  70 static char *acpidev_memory_uid_formats[] = {
  71         "MEM%x-%x",
  72 };
  73
  74 /* Filter rule table for memory objects. */
  75 static acpidev_filter_rule_t acpidev_memory_filters[] = {
  76         {       /* Ignore all memory objects under the ACPI root object */
  77                 NULL,
  78                 0,
  79                 ACPIDEV_FILTER_SKIP,
  80                 NULL,
  81                 1,
  82                 1,
  83                 NULL,
  84                 NULL,
  85         },
  86         {       /* Create node and scan child for all other memory objects */
  87                 NULL,
  88                 0,
  89                 ACPIDEV_FILTER_DEFAULT,
  90                 &acpidev_class_list_device,
  91                 2,
  92                 INT_MAX,
  93                 NULL,
  94                 ACPIDEV_NODE_NAME_MEMORY,
  95         }
  96 };
  97
  98 static ACPI_STATUS
  99 acpidev_memory_probe(acpidev_walk_info_t *infop)
 100 {
 101         ACPI_STATUS rc = AE_OK;
 102         int flags;
 103
 104         ASSERT(infop != NULL);
 105         ASSERT(infop->awi_hdl != NULL);
 106         ASSERT(infop->awi_info != NULL);
 107         if (infop->awi_info->Type != ACPI_TYPE_DEVICE ||
 108             acpidev_match_device_id(infop->awi_info,
 109             ACPIDEV_ARRAY_PARAM(acpidev_memory_device_ids)) == 0) {
 110                 return (AE_OK);
 111         }
 112
 113         flags = ACPIDEV_PROCESS_FLAG_SCAN;
 114         switch (infop->awi_op_type) {
 115         case ACPIDEV_OP_BOOT_PROBE:
 116                 if (acpica_get_devcfg_feature(ACPI_DEVCFG_MEMORY)) {
 117                         flags |= ACPIDEV_PROCESS_FLAG_CREATE;
 118                         acpidev_dr_check(infop);
 119                 }
 120                 break;
 121
 122         case ACPIDEV_OP_BOOT_REPROBE:
 123                 break;
 124
 125         case ACPIDEV_OP_HOTPLUG_PROBE:
 126                 if (acpica_get_devcfg_feature(ACPI_DEVCFG_MEMORY)) {
 127                         flags |= ACPIDEV_PROCESS_FLAG_CREATE |
 128                             ACPIDEV_PROCESS_FLAG_SYNCSTATUS |
 129                             ACPIDEV_PROCESS_FLAG_HOLDBRANCH;
 130                 }
 131                 break;
 132
 133         default:
 134                 ACPIDEV_DEBUG(CE_WARN, "!acpidev: unknown operation type %u "
 135                     "in acpidev_memory_probe.", infop->awi_op_type);
 136                 rc = AE_BAD_PARAMETER;
 137                 break;
 138         }
 139
 140         if (rc == AE_OK) {
 141                 rc = acpidev_process_object(infop, flags);
 142         }
 143         if (ACPI_FAILURE(rc) && rc != AE_NOT_EXIST && rc != AE_ALREADY_EXISTS) {
 144                 cmn_err(CE_WARN,
 145                     "!acpidev: failed to process memory object %s.",
 146                     infop->awi_name);
 147         } else {
 148                 rc = AE_OK;
 149         }
 150
 151         return (rc);
 152 }
 153
 154 static acpidev_filter_result_t
 155 acpidev_memory_filter(acpidev_walk_info_t *infop, char *devname, int maxlen)
 156 {
 157         acpidev_filter_result_t res;
 158
 159         ASSERT(infop != NULL);
 160         if (infop->awi_op_type == ACPIDEV_OP_BOOT_PROBE ||
 161             infop->awi_op_type == ACPIDEV_OP_BOOT_REPROBE ||
 162             infop->awi_op_type == ACPIDEV_OP_HOTPLUG_PROBE) {
 163                 res = acpidev_filter_device(infop, infop->awi_hdl,
 164                     ACPIDEV_ARRAY_PARAM(acpidev_memory_filters),
 165                     devname, maxlen);
 166         } else {
 167                 res = ACPIDEV_FILTER_FAILED;
 168         }
 169
 170         return (res);
 171 }
 172
 173 static ACPI_STATUS
 174 acpidev_memory_init(acpidev_walk_info_t *infop)
 175 {
 176         char *compatible[] = {
 177                 ACPIDEV_TYPE_MEMORY,
 178                 "mem"
 179         };
 180
 181         ASSERT(infop != NULL);
 182         ASSERT(infop->awi_hdl != NULL);
 183         ASSERT(infop->awi_dip != NULL);
 184         if (ACPI_FAILURE(acpidev_resource_process(infop, B_TRUE))) {
 185                 cmn_err(CE_WARN, "!acpidev: failed to process resources of "
 186                     "memory device %s.", infop->awi_name);
 187                 return (AE_ERROR);
 188         }
 189
 190         if (ACPI_FAILURE(acpidev_set_compatible(infop,
 191             ACPIDEV_ARRAY_PARAM(compatible)))) {
 192                 return (AE_ERROR);
 193         }
 194
 195         if (ACPI_FAILURE(acpidev_set_unitaddr(infop,
 196             ACPIDEV_ARRAY_PARAM(acpidev_memory_uid_formats), NULL))) {
 197                 return (AE_ERROR);
 198         }
 199
 200         return (AE_OK);
 201 }