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(DeviceState *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 }
  47
  48 static void idebus_unrealize(DeviceState *qdev, Error **errp)
  49 {
  50     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  51
  52     if (bus->vmstate) {
  53         qemu_del_vm_change_state_handler(bus->vmstate);
  54     }
  55 }
  56
  57 static const TypeInfo ide_bus_info = {
  58     .name = TYPE_IDE_BUS,
  59     .parent = TYPE_BUS,
  60     .instance_size = sizeof(IDEBus),
  61     .class_init = ide_bus_class_init,
  62 };
  63
  64 void ide_bus_new(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
  65                  int bus_id, int max_units)
  66 {
  67     qbus_create_inplace(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL);
  68     idebus->bus_id = bus_id;
  69     idebus->max_units = max_units;
  70 }
  71
  72 static char *idebus_get_fw_dev_path(DeviceState *dev)
  73 {
  74     char path[30];
  75
  76     snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev),
  77              ((IDEBus*)dev->parent_bus)->bus_id);
  78
  79     return g_strdup(path);
  80 }
  81
  82 static int ide_qdev_init(DeviceState *qdev)
  83 {
  84     IDEDevice *dev = IDE_DEVICE(qdev);
  85     IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
  86     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  87
  88     if (dev->unit == -1) {
  89         dev->unit = bus->master ? 1 : 0;
  90     }
  91
  92     if (dev->unit >= bus->max_units) {
  93         error_report("Can't create IDE unit %d, bus supports only %d units",
  94                      dev->unit, bus->max_units);
  95         goto err;
  96     }
  97
  98     switch (dev->unit) {
  99     case 0:
 100         if (bus->master) {
 101             error_report("IDE unit %d is in use", dev->unit);
 102             goto err;
 103         }
 104         bus->master = dev;
 105         break;
 106     case 1:
 107         if (bus->slave) {
 108             error_report("IDE unit %d is in use", dev->unit);
 109             goto err;
 110         }
 111         bus->slave = dev;
 112         break;
 113     default:
 114         error_report("Invalid IDE unit %d", dev->unit);
 115         goto err;
 116     }
 117     return dc->init(dev);
 118
 119 err:
 120     return -1;
 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 int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
 162 {
 163     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 164     IDEState *s = bus->ifs + dev->unit;
 165     Error *err = NULL;
 166
 167     if (!dev->conf.blk) {
 168         if (kind != IDE_CD) {
 169             error_report("No drive specified");
 170             return -1;
 171         } else {
 172             /* Anonymous BlockBackend for an empty drive */
 173             dev->conf.blk = blk_new(0, BLK_PERM_ALL);
 174         }
 175     }
 176
 177     if (dev->conf.discard_granularity == -1) {
 178         dev->conf.discard_granularity = 512;
 179     } else if (dev->conf.discard_granularity &&
 180                dev->conf.discard_granularity != 512) {
 181         error_report("discard_granularity must be 512 for ide");
 182         return -1;
 183     }
 184
 185     blkconf_blocksizes(&dev->conf);
 186     if (dev->conf.logical_block_size != 512) {
 187         error_report("logical_block_size must be 512 for IDE");
 188         return -1;
 189     }
 190
 191     blkconf_serial(&dev->conf, &dev->serial);
 192     if (kind != IDE_CD) {
 193         blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255, &err);
 194         if (err) {
 195             error_report_err(err);
 196             return -1;
 197         }
 198     }
 199     blkconf_apply_backend_options(&dev->conf, kind == IDE_CD, kind != IDE_CD,
 200                                   &err);
 201     if (err) {
 202         error_report_err(err);
 203         return -1;
 204     }
 205
 206     if (ide_init_drive(s, dev->conf.blk, kind,
 207                        dev->version, dev->serial, dev->model, dev->wwn,
 208                        dev->conf.cyls, dev->conf.heads, dev->conf.secs,
 209                        dev->chs_trans) < 0) {
 210         return -1;
 211     }
 212
 213     if (!dev->version) {
 214         dev->version = g_strdup(s->version);
 215     }
 216     if (!dev->serial) {
 217         dev->serial = g_strdup(s->drive_serial_str);
 218     }
 219
 220     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 221                          dev->unit ? "/disk@1" : "/disk@0");
 222
 223     return 0;
 224 }
 225
 226 static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
 227                                   void *opaque, Error **errp)
 228 {
 229     IDEDevice *d = IDE_DEVICE(obj);
 230
 231     visit_type_int32(v, name, &d->conf.bootindex, errp);
 232 }
 233
 234 static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name,
 235                                   void *opaque, Error **errp)
 236 {
 237     IDEDevice *d = IDE_DEVICE(obj);
 238     int32_t boot_index;
 239     Error *local_err = NULL;
 240
 241     visit_type_int32(v, name, &boot_index, &local_err);
 242     if (local_err) {
 243         goto out;
 244     }
 245     /* check whether bootindex is present in fw_boot_order list  */
 246     check_boot_index(boot_index, &local_err);
 247     if (local_err) {
 248         goto out;
 249     }
 250     /* change bootindex to a new one */
 251     d->conf.bootindex = boot_index;
 252
 253     if (d->unit != -1) {
 254         add_boot_device_path(d->conf.bootindex, &d->qdev,
 255                              d->unit ? "/disk@1" : "/disk@0");
 256     }
 257 out:
 258     error_propagate(errp, local_err);
 259 }
 260
 261 static void ide_dev_instance_init(Object *obj)
 262 {
 263     object_property_add(obj, "bootindex", "int32",
 264                         ide_dev_get_bootindex,
 265                         ide_dev_set_bootindex, NULL, NULL, NULL);
 266     object_property_set_int(obj, -1, "bootindex", NULL);
 267 }
 268
 269 static int ide_hd_initfn(IDEDevice *dev)
 270 {
 271     return ide_dev_initfn(dev, IDE_HD);
 272 }
 273
 274 static int ide_cd_initfn(IDEDevice *dev)
 275 {
 276     return ide_dev_initfn(dev, IDE_CD);
 277 }
 278
 279 static int ide_drive_initfn(IDEDevice *dev)
 280 {
 281     DriveInfo *dinfo = NULL;
 282
 283     if (dev->conf.blk) {
 284         dinfo = blk_legacy_dinfo(dev->conf.blk);
 285     }
 286
 287     return ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD);
 288 }
 289
 290 #define DEFINE_IDE_DEV_PROPERTIES()                     \
 291     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
 292     DEFINE_BLOCK_ERROR_PROPERTIES(IDEDrive, dev.conf),  \
 293     DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),  \
 294     DEFINE_PROP_UINT64("wwn",  IDEDrive, dev.wwn, 0),    \
 295     DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),\
 296     DEFINE_PROP_STRING("model", IDEDrive, dev.model)
 297
 298 static Property ide_hd_properties[] = {
 299     DEFINE_IDE_DEV_PROPERTIES(),
 300     DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
 301     DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
 302                 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
 303     DEFINE_PROP_END_OF_LIST(),
 304 };
 305
 306 static void ide_hd_class_init(ObjectClass *klass, void *data)
 307 {
 308     DeviceClass *dc = DEVICE_CLASS(klass);
 309     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 310     k->init = ide_hd_initfn;
 311     dc->fw_name = "drive";
 312     dc->desc = "virtual IDE disk";
 313     dc->props = ide_hd_properties;
 314 }
 315
 316 static const TypeInfo ide_hd_info = {
 317     .name          = "ide-hd",
 318     .parent        = TYPE_IDE_DEVICE,
 319     .instance_size = sizeof(IDEDrive),
 320     .class_init    = ide_hd_class_init,
 321 };
 322
 323 static Property ide_cd_properties[] = {
 324     DEFINE_IDE_DEV_PROPERTIES(),
 325     DEFINE_PROP_END_OF_LIST(),
 326 };
 327
 328 static void ide_cd_class_init(ObjectClass *klass, void *data)
 329 {
 330     DeviceClass *dc = DEVICE_CLASS(klass);
 331     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 332     k->init = ide_cd_initfn;
 333     dc->fw_name = "drive";
 334     dc->desc = "virtual IDE CD-ROM";
 335     dc->props = ide_cd_properties;
 336 }
 337
 338 static const TypeInfo ide_cd_info = {
 339     .name          = "ide-cd",
 340     .parent        = TYPE_IDE_DEVICE,
 341     .instance_size = sizeof(IDEDrive),
 342     .class_init    = ide_cd_class_init,
 343 };
 344
 345 static Property ide_drive_properties[] = {
 346     DEFINE_IDE_DEV_PROPERTIES(),
 347     DEFINE_PROP_END_OF_LIST(),
 348 };
 349
 350 static void ide_drive_class_init(ObjectClass *klass, void *data)
 351 {
 352     DeviceClass *dc = DEVICE_CLASS(klass);
 353     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 354     k->init = ide_drive_initfn;
 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->init = ide_qdev_init;
 371     set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
 372     k->bus_type = TYPE_IDE_BUS;
 373     k->unrealize = idebus_unrealize;
 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)