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