hw/ide/qdev.c

   1 /*
   2  * ide bus support for qdev.
   3  *
   4  * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "qemu/osdep.h"
  21 #include "sysemu/dma.h"
  22 #include "qapi/error.h"
  23 #include "qapi/qapi-types-block.h"
  24 #include "qemu/error-report.h"
  25 #include "qemu/main-loop.h"
  26 #include "qemu/module.h"
  27 #include "hw/ide/internal.h"
  28 #include "hw/qdev-properties.h"
  29 #include "sysemu/block-backend.h"
  30 #include "sysemu/blockdev.h"
  31 #include "hw/block/block.h"
  32 #include "sysemu/sysemu.h"
  33 #include "sysemu/runstate.h"
  34 #include "qapi/visitor.h"
  35
  36 /* --------------------------------- */
  37
  38 static char *idebus_get_fw_dev_path(DeviceState *dev);
  39 static void idebus_unrealize(BusState *qdev, Error **errp);
  40
  41 static Property ide_props[] = {
  42     DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1),
  43     DEFINE_PROP_END_OF_LIST(),
  44 };
  45
  46 static void ide_bus_class_init(ObjectClass *klass, void *data)
  47 {
  48     BusClass *k = BUS_CLASS(klass);
  49
  50     k->get_fw_dev_path = idebus_get_fw_dev_path;
  51     k->unrealize = idebus_unrealize;
  52 }
  53
  54 static void idebus_unrealize(BusState *bus, Error **errp)
  55 {
  56     IDEBus *ibus = IDE_BUS(bus);
  57
  58     if (ibus->vmstate) {
  59         qemu_del_vm_change_state_handler(ibus->vmstate);
  60     }
  61 }
  62
  63 static const TypeInfo ide_bus_info = {
  64     .name = TYPE_IDE_BUS,
  65     .parent = TYPE_BUS,
  66     .instance_size = sizeof(IDEBus),
  67     .class_init = ide_bus_class_init,
  68 };
  69
  70 void ide_bus_new(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
  71                  int bus_id, int max_units)
  72 {
  73     qbus_create_inplace(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL);
  74     idebus->bus_id = bus_id;
  75     idebus->max_units = max_units;
  76 }
  77
  78 static char *idebus_get_fw_dev_path(DeviceState *dev)
  79 {
  80     char path[30];
  81
  82     snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev),
  83              ((IDEBus*)dev->parent_bus)->bus_id);
  84
  85     return g_strdup(path);
  86 }
  87
  88 static void ide_qdev_realize(DeviceState *qdev, Error **errp)
  89 {
  90     IDEDevice *dev = IDE_DEVICE(qdev);
  91     IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
  92     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  93
  94     if (dev->unit == -1) {
  95         dev->unit = bus->master ? 1 : 0;
  96     }
  97
  98     if (dev->unit >= bus->max_units) {
  99         error_setg(errp, "Can't create IDE unit %d, bus supports only %d units",
 100                      dev->unit, bus->max_units);
 101         return;
 102     }
 103
 104     switch (dev->unit) {
 105     case 0:
 106         if (bus->master) {
 107             error_setg(errp, "IDE unit %d is in use", dev->unit);
 108             return;
 109         }
 110         bus->master = dev;
 111         break;
 112     case 1:
 113         if (bus->slave) {
 114             error_setg(errp, "IDE unit %d is in use", dev->unit);
 115             return;
 116         }
 117         bus->slave = dev;
 118         break;
 119     default:
 120         error_setg(errp, "Invalid IDE unit %d", dev->unit);
 121         return;
 122     }
 123     dc->realize(dev, errp);
 124 }
 125
 126 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
 127 {
 128     DeviceState *dev;
 129
 130     dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd");
 131     qdev_prop_set_uint32(dev, "unit", unit);
 132     qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(drive),
 133                         &error_fatal);
 134     qdev_init_nofail(dev);
 135     return DO_UPCAST(IDEDevice, qdev, dev);
 136 }
 137
 138 int ide_get_geometry(BusState *bus, int unit,
 139                      int16_t *cyls, int8_t *heads, int8_t *secs)
 140 {
 141     IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
 142
 143     if (s->drive_kind != IDE_HD || !s->blk) {
 144         return -1;
 145     }
 146
 147     *cyls = s->cylinders;
 148     *heads = s->heads;
 149     *secs = s->sectors;
 150     return 0;
 151 }
 152
 153 int ide_get_bios_chs_trans(BusState *bus, int unit)
 154 {
 155     return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
 156 }
 157
 158 /* --------------------------------- */
 159
 160 typedef struct IDEDrive {
 161     IDEDevice dev;
 162 } IDEDrive;
 163
 164 static void ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind, Error **errp)
 165 {
 166     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 167     IDEState *s = bus->ifs + dev->unit;
 168     int ret;
 169
 170     if (!dev->conf.blk) {
 171         if (kind != IDE_CD) {
 172             error_setg(errp, "No drive specified");
 173             return;
 174         } else {
 175             /* Anonymous BlockBackend for an empty drive */
 176             dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL);
 177             ret = blk_attach_dev(dev->conf.blk, &dev->qdev);
 178             assert(ret == 0);
 179         }
 180     }
 181
 182     if (dev->conf.discard_granularity == -1) {
 183         dev->conf.discard_granularity = 512;
 184     } else if (dev->conf.discard_granularity &&
 185                dev->conf.discard_granularity != 512) {
 186         error_setg(errp, "discard_granularity must be 512 for ide");
 187         return;
 188     }
 189
 190     blkconf_blocksizes(&dev->conf);
 191     if (dev->conf.logical_block_size != 512) {
 192         error_setg(errp, "logical_block_size must be 512 for IDE");
 193         return;
 194     }
 195
 196     if (kind != IDE_CD) {
 197         if (!blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255,
 198                               errp)) {
 199             return;
 200         }
 201     }
 202     if (!blkconf_apply_backend_options(&dev->conf, kind == IDE_CD,
 203                                        kind != IDE_CD, errp)) {
 204         return;
 205     }
 206
 207     if (ide_init_drive(s, dev->conf.blk, kind,
 208                        dev->version, dev->serial, dev->model, dev->wwn,
 209                        dev->conf.cyls, dev->conf.heads, dev->conf.secs,
 210                        dev->chs_trans, errp) < 0) {
 211         return;
 212     }
 213
 214     if (!dev->version) {
 215         dev->version = g_strdup(s->version);
 216     }
 217     if (!dev->serial) {
 218         dev->serial = g_strdup(s->drive_serial_str);
 219     }
 220
 221     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 222                          dev->unit ? "/disk@1" : "/disk@0");
 223
 224     add_boot_device_lchs(&dev->qdev, dev->unit ? "/disk@1" : "/disk@0",
 225                          dev->conf.lcyls,
 226                          dev->conf.lheads,
 227                          dev->conf.lsecs);
 228 }
 229
 230 static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
 231                                   void *opaque, Error **errp)
 232 {
 233     IDEDevice *d = IDE_DEVICE(obj);
 234
 235     visit_type_int32(v, name, &d->conf.bootindex, errp);
 236 }
 237
 238 static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name,
 239                                   void *opaque, Error **errp)
 240 {
 241     IDEDevice *d = IDE_DEVICE(obj);
 242     int32_t boot_index;
 243     Error *local_err = NULL;
 244
 245     visit_type_int32(v, name, &boot_index, &local_err);
 246     if (local_err) {
 247         goto out;
 248     }
 249     /* check whether bootindex is present in fw_boot_order list  */
 250     check_boot_index(boot_index, &local_err);
 251     if (local_err) {
 252         goto out;
 253     }
 254     /* change bootindex to a new one */
 255     d->conf.bootindex = boot_index;
 256
 257     if (d->unit != -1) {
 258         add_boot_device_path(d->conf.bootindex, &d->qdev,
 259                              d->unit ? "/disk@1" : "/disk@0");
 260     }
 261 out:
 262     error_propagate(errp, local_err);
 263 }
 264
 265 static void ide_dev_instance_init(Object *obj)
 266 {
 267     object_property_add(obj, "bootindex", "int32",
 268                         ide_dev_get_bootindex,
 269                         ide_dev_set_bootindex, NULL, NULL, NULL);
 270     object_property_set_int(obj, -1, "bootindex", NULL);
 271 }
 272
 273 static void ide_hd_realize(IDEDevice *dev, Error **errp)
 274 {
 275     ide_dev_initfn(dev, IDE_HD, errp);
 276 }
 277
 278 static void ide_cd_realize(IDEDevice *dev, Error **errp)
 279 {
 280     ide_dev_initfn(dev, IDE_CD, errp);
 281 }
 282
 283 static void ide_drive_realize(IDEDevice *dev, Error **errp)
 284 {
 285     DriveInfo *dinfo = NULL;
 286
 287     warn_report("'ide-drive' is deprecated, "
 288                 "please use 'ide-hd' or 'ide-cd' instead");
 289
 290     if (dev->conf.blk) {
 291         dinfo = blk_legacy_dinfo(dev->conf.blk);
 292     }
 293
 294     ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD, errp);
 295 }
 296
 297 #define DEFINE_IDE_DEV_PROPERTIES()                     \
 298     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
 299     DEFINE_BLOCK_ERROR_PROPERTIES(IDEDrive, dev.conf),  \
 300     DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),  \
 301     DEFINE_PROP_UINT64("wwn",  IDEDrive, dev.wwn, 0),   \
 302     DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),\
 303     DEFINE_PROP_STRING("model", IDEDrive, dev.model)
 304
 305 static Property ide_hd_properties[] = {
 306     DEFINE_IDE_DEV_PROPERTIES(),
 307     DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
 308     DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
 309                 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
 310     DEFINE_PROP_UINT16("rotation_rate", IDEDrive, dev.rotation_rate, 0),
 311     DEFINE_PROP_END_OF_LIST(),
 312 };
 313
 314 static void ide_hd_class_init(ObjectClass *klass, void *data)
 315 {
 316     DeviceClass *dc = DEVICE_CLASS(klass);
 317     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 318
 319     k->realize  = ide_hd_realize;
 320     dc->fw_name = "drive";
 321     dc->desc    = "virtual IDE disk";
 322     dc->props   = ide_hd_properties;
 323 }
 324
 325 static const TypeInfo ide_hd_info = {
 326     .name          = "ide-hd",
 327     .parent        = TYPE_IDE_DEVICE,
 328     .instance_size = sizeof(IDEDrive),
 329     .class_init    = ide_hd_class_init,
 330 };
 331
 332 static Property ide_cd_properties[] = {
 333     DEFINE_IDE_DEV_PROPERTIES(),
 334     DEFINE_PROP_END_OF_LIST(),
 335 };
 336
 337 static void ide_cd_class_init(ObjectClass *klass, void *data)
 338 {
 339     DeviceClass *dc = DEVICE_CLASS(klass);
 340     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 341
 342     k->realize  = ide_cd_realize;
 343     dc->fw_name = "drive";
 344     dc->desc    = "virtual IDE CD-ROM";
 345     dc->props   = ide_cd_properties;
 346 }
 347
 348 static const TypeInfo ide_cd_info = {
 349     .name          = "ide-cd",
 350     .parent        = TYPE_IDE_DEVICE,
 351     .instance_size = sizeof(IDEDrive),
 352     .class_init    = ide_cd_class_init,
 353 };
 354
 355 static Property ide_drive_properties[] = {
 356     DEFINE_IDE_DEV_PROPERTIES(),
 357     DEFINE_PROP_END_OF_LIST(),
 358 };
 359
 360 static void ide_drive_class_init(ObjectClass *klass, void *data)
 361 {
 362     DeviceClass *dc = DEVICE_CLASS(klass);
 363     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 364
 365     k->realize  = ide_drive_realize;
 366     dc->fw_name = "drive";
 367     dc->desc    = "virtual IDE disk or CD-ROM (legacy)";
 368     dc->props   = ide_drive_properties;
 369 }
 370
 371 static const TypeInfo ide_drive_info = {
 372     .name          = "ide-drive",
 373     .parent        = TYPE_IDE_DEVICE,
 374     .instance_size = sizeof(IDEDrive),
 375     .class_init    = ide_drive_class_init,
 376 };
 377
 378 static void ide_device_class_init(ObjectClass *klass, void *data)
 379 {
 380     DeviceClass *k = DEVICE_CLASS(klass);
 381     k->realize = ide_qdev_realize;
 382     set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
 383     k->bus_type = TYPE_IDE_BUS;
 384     k->props = ide_props;
 385 }
 386
 387 static const TypeInfo ide_device_type_info = {
 388     .name = TYPE_IDE_DEVICE,
 389     .parent = TYPE_DEVICE,
 390     .instance_size = sizeof(IDEDevice),
 391     .abstract = true,
 392     .class_size = sizeof(IDEDeviceClass),
 393     .class_init = ide_device_class_init,
 394     .instance_init = ide_dev_instance_init,
 395 };
 396
 397 static void ide_register_types(void)
 398 {
 399     type_register_static(&ide_bus_info);
 400     type_register_static(&ide_hd_info);
 401     type_register_static(&ide_cd_info);
 402     type_register_static(&ide_drive_info);
 403     type_register_static(&ide_device_type_info);
 404 }
 405
 406 type_init(ide_register_types)