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