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 <hw/hw.h>
  20 #include "sysemu/dma.h"
  21 #include "qemu/error-report.h"
  22 #include <hw/ide/internal.h>
  23 #include "sysemu/block-backend.h"
  24 #include "sysemu/blockdev.h"
  25 #include "hw/block/block.h"
  26 #include "sysemu/sysemu.h"
  27 #include "qapi/visitor.h"
  28
  29 /* --------------------------------- */
  30
  31 static char *idebus_get_fw_dev_path(DeviceState *dev);
  32
  33 static Property ide_props[] = {
  34     DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1),
  35     DEFINE_PROP_END_OF_LIST(),
  36 };
  37
  38 static void ide_bus_class_init(ObjectClass *klass, void *data)
  39 {
  40     BusClass *k = BUS_CLASS(klass);
  41
  42     k->get_fw_dev_path = idebus_get_fw_dev_path;
  43 }
  44
  45 static const TypeInfo ide_bus_info = {
  46     .name = TYPE_IDE_BUS,
  47     .parent = TYPE_BUS,
  48     .instance_size = sizeof(IDEBus),
  49     .class_init = ide_bus_class_init,
  50 };
  51
  52 void ide_bus_new(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
  53                  int bus_id, int max_units)
  54 {
  55     qbus_create_inplace(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL);
  56     idebus->bus_id = bus_id;
  57     idebus->max_units = max_units;
  58 }
  59
  60 static char *idebus_get_fw_dev_path(DeviceState *dev)
  61 {
  62     char path[30];
  63
  64     snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev),
  65              ((IDEBus*)dev->parent_bus)->bus_id);
  66
  67     return g_strdup(path);
  68 }
  69
  70 static int ide_qdev_init(DeviceState *qdev)
  71 {
  72     IDEDevice *dev = IDE_DEVICE(qdev);
  73     IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
  74     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  75
  76     if (!dev->conf.blk) {
  77         error_report("No drive specified");
  78         goto err;
  79     }
  80     if (dev->unit == -1) {
  81         dev->unit = bus->master ? 1 : 0;
  82     }
  83
  84     if (dev->unit >= bus->max_units) {
  85         error_report("Can't create IDE unit %d, bus supports only %d units",
  86                      dev->unit, bus->max_units);
  87         goto err;
  88     }
  89
  90     switch (dev->unit) {
  91     case 0:
  92         if (bus->master) {
  93             error_report("IDE unit %d is in use", dev->unit);
  94             goto err;
  95         }
  96         bus->master = dev;
  97         break;
  98     case 1:
  99         if (bus->slave) {
 100             error_report("IDE unit %d is in use", dev->unit);
 101             goto err;
 102         }
 103         bus->slave = dev;
 104         break;
 105     default:
 106         error_report("Invalid IDE unit %d", dev->unit);
 107         goto err;
 108     }
 109     return dc->init(dev);
 110
 111 err:
 112     return -1;
 113 }
 114
 115 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
 116 {
 117     DeviceState *dev;
 118
 119     dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd");
 120     qdev_prop_set_uint32(dev, "unit", unit);
 121     qdev_prop_set_drive_nofail(dev, "drive", blk_by_legacy_dinfo(drive));
 122     qdev_init_nofail(dev);
 123     return DO_UPCAST(IDEDevice, qdev, dev);
 124 }
 125
 126 int ide_get_geometry(BusState *bus, int unit,
 127                      int16_t *cyls, int8_t *heads, int8_t *secs)
 128 {
 129     IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
 130
 131     if (s->drive_kind != IDE_HD || !s->blk) {
 132         return -1;
 133     }
 134
 135     *cyls = s->cylinders;
 136     *heads = s->heads;
 137     *secs = s->sectors;
 138     return 0;
 139 }
 140
 141 int ide_get_bios_chs_trans(BusState *bus, int unit)
 142 {
 143     return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
 144 }
 145
 146 /* --------------------------------- */
 147
 148 typedef struct IDEDrive {
 149     IDEDevice dev;
 150 } IDEDrive;
 151
 152 static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
 153 {
 154     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 155     IDEState *s = bus->ifs + dev->unit;
 156     Error *err = NULL;
 157
 158     if (dev->conf.discard_granularity == -1) {
 159         dev->conf.discard_granularity = 512;
 160     } else if (dev->conf.discard_granularity &&
 161                dev->conf.discard_granularity != 512) {
 162         error_report("discard_granularity must be 512 for ide");
 163         return -1;
 164     }
 165
 166     blkconf_serial(&dev->conf, &dev->serial);
 167     if (kind != IDE_CD) {
 168         blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255, &err);
 169         if (err) {
 170             error_report("%s", error_get_pretty(err));
 171             error_free(err);
 172             return -1;
 173         }
 174     }
 175
 176     if (ide_init_drive(s, dev->conf.blk, kind,
 177                        dev->version, dev->serial, dev->model, dev->wwn,
 178                        dev->conf.cyls, dev->conf.heads, dev->conf.secs,
 179                        dev->chs_trans) < 0) {
 180         return -1;
 181     }
 182
 183     if (!dev->version) {
 184         dev->version = g_strdup(s->version);
 185     }
 186     if (!dev->serial) {
 187         dev->serial = g_strdup(s->drive_serial_str);
 188     }
 189
 190     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 191                          dev->unit ? "/disk@1" : "/disk@0");
 192
 193     return 0;
 194 }
 195
 196 static void ide_dev_get_bootindex(Object *obj, Visitor *v, void *opaque,
 197                                   const char *name, Error **errp)
 198 {
 199     IDEDevice *d = IDE_DEVICE(obj);
 200
 201     visit_type_int32(v, &d->conf.bootindex, name, errp);
 202 }
 203
 204 static void ide_dev_set_bootindex(Object *obj, Visitor *v, void *opaque,
 205                                   const char *name, Error **errp)
 206 {
 207     IDEDevice *d = IDE_DEVICE(obj);
 208     int32_t boot_index;
 209     Error *local_err = NULL;
 210
 211     visit_type_int32(v, &boot_index, name, &local_err);
 212     if (local_err) {
 213         goto out;
 214     }
 215     /* check whether bootindex is present in fw_boot_order list  */
 216     check_boot_index(boot_index, &local_err);
 217     if (local_err) {
 218         goto out;
 219     }
 220     /* change bootindex to a new one */
 221     d->conf.bootindex = boot_index;
 222
 223     if (d->unit != -1) {
 224         add_boot_device_path(d->conf.bootindex, &d->qdev,
 225                              d->unit ? "/disk@1" : "/disk@0");
 226     }
 227 out:
 228     if (local_err) {
 229         error_propagate(errp, local_err);
 230     }
 231 }
 232
 233 static void ide_dev_instance_init(Object *obj)
 234 {
 235     object_property_add(obj, "bootindex", "int32",
 236                         ide_dev_get_bootindex,
 237                         ide_dev_set_bootindex, NULL, NULL, NULL);
 238     object_property_set_int(obj, -1, "bootindex", NULL);
 239 }
 240
 241 static int ide_hd_initfn(IDEDevice *dev)
 242 {
 243     return ide_dev_initfn(dev, IDE_HD);
 244 }
 245
 246 static int ide_cd_initfn(IDEDevice *dev)
 247 {
 248     return ide_dev_initfn(dev, IDE_CD);
 249 }
 250
 251 static int ide_drive_initfn(IDEDevice *dev)
 252 {
 253     DriveInfo *dinfo = blk_legacy_dinfo(dev->conf.blk);
 254
 255     return ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD);
 256 }
 257
 258 #define DEFINE_IDE_DEV_PROPERTIES()                     \
 259     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
 260     DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),  \
 261     DEFINE_PROP_UINT64("wwn",  IDEDrive, dev.wwn, 0),    \
 262     DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),\
 263     DEFINE_PROP_STRING("model", IDEDrive, dev.model)
 264
 265 static Property ide_hd_properties[] = {
 266     DEFINE_IDE_DEV_PROPERTIES(),
 267     DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
 268     DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
 269                 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
 270     DEFINE_PROP_END_OF_LIST(),
 271 };
 272
 273 static void ide_hd_class_init(ObjectClass *klass, void *data)
 274 {
 275     DeviceClass *dc = DEVICE_CLASS(klass);
 276     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 277     k->init = ide_hd_initfn;
 278     dc->fw_name = "drive";
 279     dc->desc = "virtual IDE disk";
 280     dc->props = ide_hd_properties;
 281 }
 282
 283 static const TypeInfo ide_hd_info = {
 284     .name          = "ide-hd",
 285     .parent        = TYPE_IDE_DEVICE,
 286     .instance_size = sizeof(IDEDrive),
 287     .class_init    = ide_hd_class_init,
 288 };
 289
 290 static Property ide_cd_properties[] = {
 291     DEFINE_IDE_DEV_PROPERTIES(),
 292     DEFINE_PROP_END_OF_LIST(),
 293 };
 294
 295 static void ide_cd_class_init(ObjectClass *klass, void *data)
 296 {
 297     DeviceClass *dc = DEVICE_CLASS(klass);
 298     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 299     k->init = ide_cd_initfn;
 300     dc->fw_name = "drive";
 301     dc->desc = "virtual IDE CD-ROM";
 302     dc->props = ide_cd_properties;
 303 }
 304
 305 static const TypeInfo ide_cd_info = {
 306     .name          = "ide-cd",
 307     .parent        = TYPE_IDE_DEVICE,
 308     .instance_size = sizeof(IDEDrive),
 309     .class_init    = ide_cd_class_init,
 310 };
 311
 312 static Property ide_drive_properties[] = {
 313     DEFINE_IDE_DEV_PROPERTIES(),
 314     DEFINE_PROP_END_OF_LIST(),
 315 };
 316
 317 static void ide_drive_class_init(ObjectClass *klass, void *data)
 318 {
 319     DeviceClass *dc = DEVICE_CLASS(klass);
 320     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 321     k->init = ide_drive_initfn;
 322     dc->fw_name = "drive";
 323     dc->desc = "virtual IDE disk or CD-ROM (legacy)";
 324     dc->props = ide_drive_properties;
 325 }
 326
 327 static const TypeInfo ide_drive_info = {
 328     .name          = "ide-drive",
 329     .parent        = TYPE_IDE_DEVICE,
 330     .instance_size = sizeof(IDEDrive),
 331     .class_init    = ide_drive_class_init,
 332 };
 333
 334 static void ide_device_class_init(ObjectClass *klass, void *data)
 335 {
 336     DeviceClass *k = DEVICE_CLASS(klass);
 337     k->init = ide_qdev_init;
 338     set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
 339     k->bus_type = TYPE_IDE_BUS;
 340     k->props = ide_props;
 341 }
 342
 343 static const TypeInfo ide_device_type_info = {
 344     .name = TYPE_IDE_DEVICE,
 345     .parent = TYPE_DEVICE,
 346     .instance_size = sizeof(IDEDevice),
 347     .abstract = true,
 348     .class_size = sizeof(IDEDeviceClass),
 349     .class_init = ide_device_class_init,
 350     .instance_init = ide_dev_instance_init,
 351 };
 352
 353 static void ide_register_types(void)
 354 {
 355     type_register_static(&ide_bus_info);
 356     type_register_static(&ide_hd_info);
 357     type_register_static(&ide_cd_info);
 358     type_register_static(&ide_drive_info);
 359     type_register_static(&ide_device_type_info);
 360 }
 361
 362 type_init(ide_register_types)