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 "qemu/error-report.h"
  23 #include <hw/ide/internal.h>
  24 #include "sysemu/block-backend.h"
  25 #include "sysemu/blockdev.h"
  26 #include "hw/block/block.h"
  27 #include "sysemu/sysemu.h"
  28 #include "qapi/visitor.h"
  29
  30 /* --------------------------------- */
  31
  32 static char *idebus_get_fw_dev_path(DeviceState *dev);
  33
  34 static Property ide_props[] = {
  35     DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1),
  36     DEFINE_PROP_END_OF_LIST(),
  37 };
  38
  39 static void ide_bus_class_init(ObjectClass *klass, void *data)
  40 {
  41     BusClass *k = BUS_CLASS(klass);
  42
  43     k->get_fw_dev_path = idebus_get_fw_dev_path;
  44 }
  45
  46 static const TypeInfo ide_bus_info = {
  47     .name = TYPE_IDE_BUS,
  48     .parent = TYPE_BUS,
  49     .instance_size = sizeof(IDEBus),
  50     .class_init = ide_bus_class_init,
  51 };
  52
  53 void ide_bus_new(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
  54                  int bus_id, int max_units)
  55 {
  56     qbus_create_inplace(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL);
  57     idebus->bus_id = bus_id;
  58     idebus->max_units = max_units;
  59 }
  60
  61 static char *idebus_get_fw_dev_path(DeviceState *dev)
  62 {
  63     char path[30];
  64
  65     snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev),
  66              ((IDEBus*)dev->parent_bus)->bus_id);
  67
  68     return g_strdup(path);
  69 }
  70
  71 static int ide_qdev_init(DeviceState *qdev)
  72 {
  73     IDEDevice *dev = IDE_DEVICE(qdev);
  74     IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
  75     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  76
  77     if (!dev->conf.blk) {
  78         error_report("No drive specified");
  79         goto err;
  80     }
  81     if (dev->unit == -1) {
  82         dev->unit = bus->master ? 1 : 0;
  83     }
  84
  85     if (dev->unit >= bus->max_units) {
  86         error_report("Can't create IDE unit %d, bus supports only %d units",
  87                      dev->unit, bus->max_units);
  88         goto err;
  89     }
  90
  91     switch (dev->unit) {
  92     case 0:
  93         if (bus->master) {
  94             error_report("IDE unit %d is in use", dev->unit);
  95             goto err;
  96         }
  97         bus->master = dev;
  98         break;
  99     case 1:
 100         if (bus->slave) {
 101             error_report("IDE unit %d is in use", dev->unit);
 102             goto err;
 103         }
 104         bus->slave = dev;
 105         break;
 106     default:
 107         error_report("Invalid IDE unit %d", dev->unit);
 108         goto err;
 109     }
 110     return dc->init(dev);
 111
 112 err:
 113     return -1;
 114 }
 115
 116 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
 117 {
 118     DeviceState *dev;
 119
 120     dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd");
 121     qdev_prop_set_uint32(dev, "unit", unit);
 122     qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(drive),
 123                         &error_fatal);
 124     qdev_init_nofail(dev);
 125     return DO_UPCAST(IDEDevice, qdev, dev);
 126 }
 127
 128 int ide_get_geometry(BusState *bus, int unit,
 129                      int16_t *cyls, int8_t *heads, int8_t *secs)
 130 {
 131     IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
 132
 133     if (s->drive_kind != IDE_HD || !s->blk) {
 134         return -1;
 135     }
 136
 137     *cyls = s->cylinders;
 138     *heads = s->heads;
 139     *secs = s->sectors;
 140     return 0;
 141 }
 142
 143 int ide_get_bios_chs_trans(BusState *bus, int unit)
 144 {
 145     return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
 146 }
 147
 148 /* --------------------------------- */
 149
 150 typedef struct IDEDrive {
 151     IDEDevice dev;
 152 } IDEDrive;
 153
 154 static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
 155 {
 156     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 157     IDEState *s = bus->ifs + dev->unit;
 158     Error *err = NULL;
 159
 160     if (dev->conf.discard_granularity == -1) {
 161         dev->conf.discard_granularity = 512;
 162     } else if (dev->conf.discard_granularity &&
 163                dev->conf.discard_granularity != 512) {
 164         error_report("discard_granularity must be 512 for ide");
 165         return -1;
 166     }
 167
 168     blkconf_blocksizes(&dev->conf);
 169     if (dev->conf.logical_block_size != 512) {
 170         error_report("logical_block_size must be 512 for IDE");
 171         return -1;
 172     }
 173
 174     blkconf_serial(&dev->conf, &dev->serial);
 175     if (kind != IDE_CD) {
 176         blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255, &err);
 177         if (err) {
 178             error_report_err(err);
 179             return -1;
 180         }
 181     }
 182
 183     if (ide_init_drive(s, dev->conf.blk, kind,
 184                        dev->version, dev->serial, dev->model, dev->wwn,
 185                        dev->conf.cyls, dev->conf.heads, dev->conf.secs,
 186                        dev->chs_trans) < 0) {
 187         return -1;
 188     }
 189
 190     if (!dev->version) {
 191         dev->version = g_strdup(s->version);
 192     }
 193     if (!dev->serial) {
 194         dev->serial = g_strdup(s->drive_serial_str);
 195     }
 196
 197     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 198                          dev->unit ? "/disk@1" : "/disk@0");
 199
 200     return 0;
 201 }
 202
 203 static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
 204                                   void *opaque, Error **errp)
 205 {
 206     IDEDevice *d = IDE_DEVICE(obj);
 207
 208     visit_type_int32(v, name, &d->conf.bootindex, errp);
 209 }
 210
 211 static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name,
 212                                   void *opaque, Error **errp)
 213 {
 214     IDEDevice *d = IDE_DEVICE(obj);
 215     int32_t boot_index;
 216     Error *local_err = NULL;
 217
 218     visit_type_int32(v, name, &boot_index, &local_err);
 219     if (local_err) {
 220         goto out;
 221     }
 222     /* check whether bootindex is present in fw_boot_order list  */
 223     check_boot_index(boot_index, &local_err);
 224     if (local_err) {
 225         goto out;
 226     }
 227     /* change bootindex to a new one */
 228     d->conf.bootindex = boot_index;
 229
 230     if (d->unit != -1) {
 231         add_boot_device_path(d->conf.bootindex, &d->qdev,
 232                              d->unit ? "/disk@1" : "/disk@0");
 233     }
 234 out:
 235     if (local_err) {
 236         error_propagate(errp, local_err);
 237     }
 238 }
 239
 240 static void ide_dev_instance_init(Object *obj)
 241 {
 242     object_property_add(obj, "bootindex", "int32",
 243                         ide_dev_get_bootindex,
 244                         ide_dev_set_bootindex, NULL, NULL, NULL);
 245     object_property_set_int(obj, -1, "bootindex", NULL);
 246 }
 247
 248 static int ide_hd_initfn(IDEDevice *dev)
 249 {
 250     return ide_dev_initfn(dev, IDE_HD);
 251 }
 252
 253 static int ide_cd_initfn(IDEDevice *dev)
 254 {
 255     return ide_dev_initfn(dev, IDE_CD);
 256 }
 257
 258 static int ide_drive_initfn(IDEDevice *dev)
 259 {
 260     DriveInfo *dinfo = blk_legacy_dinfo(dev->conf.blk);
 261
 262     return ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD);
 263 }
 264
 265 #define DEFINE_IDE_DEV_PROPERTIES()                     \
 266     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
 267     DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),  \
 268     DEFINE_PROP_UINT64("wwn",  IDEDrive, dev.wwn, 0),    \
 269     DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),\
 270     DEFINE_PROP_STRING("model", IDEDrive, dev.model)
 271
 272 static Property ide_hd_properties[] = {
 273     DEFINE_IDE_DEV_PROPERTIES(),
 274     DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
 275     DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
 276                 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
 277     DEFINE_PROP_END_OF_LIST(),
 278 };
 279
 280 static void ide_hd_class_init(ObjectClass *klass, void *data)
 281 {
 282     DeviceClass *dc = DEVICE_CLASS(klass);
 283     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 284     k->init = ide_hd_initfn;
 285     dc->fw_name = "drive";
 286     dc->desc = "virtual IDE disk";
 287     dc->props = ide_hd_properties;
 288 }
 289
 290 static const TypeInfo ide_hd_info = {
 291     .name          = "ide-hd",
 292     .parent        = TYPE_IDE_DEVICE,
 293     .instance_size = sizeof(IDEDrive),
 294     .class_init    = ide_hd_class_init,
 295 };
 296
 297 static Property ide_cd_properties[] = {
 298     DEFINE_IDE_DEV_PROPERTIES(),
 299     DEFINE_PROP_END_OF_LIST(),
 300 };
 301
 302 static void ide_cd_class_init(ObjectClass *klass, void *data)
 303 {
 304     DeviceClass *dc = DEVICE_CLASS(klass);
 305     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 306     k->init = ide_cd_initfn;
 307     dc->fw_name = "drive";
 308     dc->desc = "virtual IDE CD-ROM";
 309     dc->props = ide_cd_properties;
 310 }
 311
 312 static const TypeInfo ide_cd_info = {
 313     .name          = "ide-cd",
 314     .parent        = TYPE_IDE_DEVICE,
 315     .instance_size = sizeof(IDEDrive),
 316     .class_init    = ide_cd_class_init,
 317 };
 318
 319 static Property ide_drive_properties[] = {
 320     DEFINE_IDE_DEV_PROPERTIES(),
 321     DEFINE_PROP_END_OF_LIST(),
 322 };
 323
 324 static void ide_drive_class_init(ObjectClass *klass, void *data)
 325 {
 326     DeviceClass *dc = DEVICE_CLASS(klass);
 327     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 328     k->init = ide_drive_initfn;
 329     dc->fw_name = "drive";
 330     dc->desc = "virtual IDE disk or CD-ROM (legacy)";
 331     dc->props = ide_drive_properties;
 332 }
 333
 334 static const TypeInfo ide_drive_info = {
 335     .name          = "ide-drive",
 336     .parent        = TYPE_IDE_DEVICE,
 337     .instance_size = sizeof(IDEDrive),
 338     .class_init    = ide_drive_class_init,
 339 };
 340
 341 static void ide_device_class_init(ObjectClass *klass, void *data)
 342 {
 343     DeviceClass *k = DEVICE_CLASS(klass);
 344     k->init = ide_qdev_init;
 345     set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
 346     k->bus_type = TYPE_IDE_BUS;
 347     k->props = ide_props;
 348 }
 349
 350 static const TypeInfo ide_device_type_info = {
 351     .name = TYPE_IDE_DEVICE,
 352     .parent = TYPE_DEVICE,
 353     .instance_size = sizeof(IDEDevice),
 354     .abstract = true,
 355     .class_size = sizeof(IDEDeviceClass),
 356     .class_init = ide_device_class_init,
 357     .instance_init = ide_dev_instance_init,
 358 };
 359
 360 static void ide_register_types(void)
 361 {
 362     type_register_static(&ide_bus_info);
 363     type_register_static(&ide_hd_info);
 364     type_register_static(&ide_cd_info);
 365     type_register_static(&ide_drive_info);
 366     type_register_static(&ide_device_type_info);
 367 }
 368
 369 type_init(ide_register_types)