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