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_blocksizes(&dev->conf);
 167     if (dev->conf.logical_block_size != 512) {
 168         error_report("logical_block_size must be 512 for IDE");
 169         return -1;
 170     }
 171
 172     blkconf_serial(&dev->conf, &dev->serial);
 173     if (kind != IDE_CD) {
 174         blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255, &err);
 175         if (err) {
 176             error_report_err(err);
 177             return -1;
 178         }
 179     }
 180
 181     if (ide_init_drive(s, dev->conf.blk, kind,
 182                        dev->version, dev->serial, dev->model, dev->wwn,
 183                        dev->conf.cyls, dev->conf.heads, dev->conf.secs,
 184                        dev->chs_trans) < 0) {
 185         return -1;
 186     }
 187
 188     if (!dev->version) {
 189         dev->version = g_strdup(s->version);
 190     }
 191     if (!dev->serial) {
 192         dev->serial = g_strdup(s->drive_serial_str);
 193     }
 194
 195     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 196                          dev->unit ? "/disk@1" : "/disk@0");
 197
 198     return 0;
 199 }
 200
 201 static void ide_dev_get_bootindex(Object *obj, Visitor *v, void *opaque,
 202                                   const char *name, Error **errp)
 203 {
 204     IDEDevice *d = IDE_DEVICE(obj);
 205
 206     visit_type_int32(v, &d->conf.bootindex, name, errp);
 207 }
 208
 209 static void ide_dev_set_bootindex(Object *obj, Visitor *v, void *opaque,
 210                                   const char *name, Error **errp)
 211 {
 212     IDEDevice *d = IDE_DEVICE(obj);
 213     int32_t boot_index;
 214     Error *local_err = NULL;
 215
 216     visit_type_int32(v, &boot_index, name, &local_err);
 217     if (local_err) {
 218         goto out;
 219     }
 220     /* check whether bootindex is present in fw_boot_order list  */
 221     check_boot_index(boot_index, &local_err);
 222     if (local_err) {
 223         goto out;
 224     }
 225     /* change bootindex to a new one */
 226     d->conf.bootindex = boot_index;
 227
 228     if (d->unit != -1) {
 229         add_boot_device_path(d->conf.bootindex, &d->qdev,
 230                              d->unit ? "/disk@1" : "/disk@0");
 231     }
 232 out:
 233     if (local_err) {
 234         error_propagate(errp, local_err);
 235     }
 236 }
 237
 238 static void ide_dev_instance_init(Object *obj)
 239 {
 240     object_property_add(obj, "bootindex", "int32",
 241                         ide_dev_get_bootindex,
 242                         ide_dev_set_bootindex, NULL, NULL, NULL);
 243     object_property_set_int(obj, -1, "bootindex", NULL);
 244 }
 245
 246 static int ide_hd_initfn(IDEDevice *dev)
 247 {
 248     return ide_dev_initfn(dev, IDE_HD);
 249 }
 250
 251 static int ide_cd_initfn(IDEDevice *dev)
 252 {
 253     return ide_dev_initfn(dev, IDE_CD);
 254 }
 255
 256 static int ide_drive_initfn(IDEDevice *dev)
 257 {
 258     DriveInfo *dinfo = blk_legacy_dinfo(dev->conf.blk);
 259
 260     return ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD);
 261 }
 262
 263 #define DEFINE_IDE_DEV_PROPERTIES()                     \
 264     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
 265     DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),  \
 266     DEFINE_PROP_UINT64("wwn",  IDEDrive, dev.wwn, 0),    \
 267     DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),\
 268     DEFINE_PROP_STRING("model", IDEDrive, dev.model)
 269
 270 static Property ide_hd_properties[] = {
 271     DEFINE_IDE_DEV_PROPERTIES(),
 272     DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
 273     DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
 274                 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
 275     DEFINE_PROP_END_OF_LIST(),
 276 };
 277
 278 static void ide_hd_class_init(ObjectClass *klass, void *data)
 279 {
 280     DeviceClass *dc = DEVICE_CLASS(klass);
 281     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 282     k->init = ide_hd_initfn;
 283     dc->fw_name = "drive";
 284     dc->desc = "virtual IDE disk";
 285     dc->props = ide_hd_properties;
 286 }
 287
 288 static const TypeInfo ide_hd_info = {
 289     .name          = "ide-hd",
 290     .parent        = TYPE_IDE_DEVICE,
 291     .instance_size = sizeof(IDEDrive),
 292     .class_init    = ide_hd_class_init,
 293 };
 294
 295 static Property ide_cd_properties[] = {
 296     DEFINE_IDE_DEV_PROPERTIES(),
 297     DEFINE_PROP_END_OF_LIST(),
 298 };
 299
 300 static void ide_cd_class_init(ObjectClass *klass, void *data)
 301 {
 302     DeviceClass *dc = DEVICE_CLASS(klass);
 303     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 304     k->init = ide_cd_initfn;
 305     dc->fw_name = "drive";
 306     dc->desc = "virtual IDE CD-ROM";
 307     dc->props = ide_cd_properties;
 308 }
 309
 310 static const TypeInfo ide_cd_info = {
 311     .name          = "ide-cd",
 312     .parent        = TYPE_IDE_DEVICE,
 313     .instance_size = sizeof(IDEDrive),
 314     .class_init    = ide_cd_class_init,
 315 };
 316
 317 static Property ide_drive_properties[] = {
 318     DEFINE_IDE_DEV_PROPERTIES(),
 319     DEFINE_PROP_END_OF_LIST(),
 320 };
 321
 322 static void ide_drive_class_init(ObjectClass *klass, void *data)
 323 {
 324     DeviceClass *dc = DEVICE_CLASS(klass);
 325     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 326     k->init = ide_drive_initfn;
 327     dc->fw_name = "drive";
 328     dc->desc = "virtual IDE disk or CD-ROM (legacy)";
 329     dc->props = ide_drive_properties;
 330 }
 331
 332 static const TypeInfo ide_drive_info = {
 333     .name          = "ide-drive",
 334     .parent        = TYPE_IDE_DEVICE,
 335     .instance_size = sizeof(IDEDrive),
 336     .class_init    = ide_drive_class_init,
 337 };
 338
 339 static void ide_device_class_init(ObjectClass *klass, void *data)
 340 {
 341     DeviceClass *k = DEVICE_CLASS(klass);
 342     k->init = ide_qdev_init;
 343     set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
 344     k->bus_type = TYPE_IDE_BUS;
 345     k->props = ide_props;
 346 }
 347
 348 static const TypeInfo ide_device_type_info = {
 349     .name = TYPE_IDE_DEVICE,
 350     .parent = TYPE_DEVICE,
 351     .instance_size = sizeof(IDEDevice),
 352     .abstract = true,
 353     .class_size = sizeof(IDEDeviceClass),
 354     .class_init = ide_device_class_init,
 355     .instance_init = ide_dev_instance_init,
 356 };
 357
 358 static void ide_register_types(void)
 359 {
 360     type_register_static(&ide_bus_info);
 361     type_register_static(&ide_hd_info);
 362     type_register_static(&ide_cd_info);
 363     type_register_static(&ide_drive_info);
 364     type_register_static(&ide_device_type_info);
 365 }
 366
 367 type_init(ide_register_types)