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->conf.blk) {
  79         error_report("No drive specified");
  80         goto err;
  81     }
  82     if (dev->unit == -1) {
  83         dev->unit = bus->master ? 1 : 0;
  84     }
  85
  86     if (dev->unit >= bus->max_units) {
  87         error_report("Can't create IDE unit %d, bus supports only %d units",
  88                      dev->unit, bus->max_units);
  89         goto err;
  90     }
  91
  92     switch (dev->unit) {
  93     case 0:
  94         if (bus->master) {
  95             error_report("IDE unit %d is in use", dev->unit);
  96             goto err;
  97         }
  98         bus->master = dev;
  99         break;
 100     case 1:
 101         if (bus->slave) {
 102             error_report("IDE unit %d is in use", dev->unit);
 103             goto err;
 104         }
 105         bus->slave = dev;
 106         break;
 107     default:
 108         error_report("Invalid IDE unit %d", dev->unit);
 109         goto err;
 110     }
 111     return dc->init(dev);
 112
 113 err:
 114     return -1;
 115 }
 116
 117 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
 118 {
 119     DeviceState *dev;
 120
 121     dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd");
 122     qdev_prop_set_uint32(dev, "unit", unit);
 123     qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(drive),
 124                         &error_fatal);
 125     qdev_init_nofail(dev);
 126     return DO_UPCAST(IDEDevice, qdev, dev);
 127 }
 128
 129 int ide_get_geometry(BusState *bus, int unit,
 130                      int16_t *cyls, int8_t *heads, int8_t *secs)
 131 {
 132     IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
 133
 134     if (s->drive_kind != IDE_HD || !s->blk) {
 135         return -1;
 136     }
 137
 138     *cyls = s->cylinders;
 139     *heads = s->heads;
 140     *secs = s->sectors;
 141     return 0;
 142 }
 143
 144 int ide_get_bios_chs_trans(BusState *bus, int unit)
 145 {
 146     return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
 147 }
 148
 149 /* --------------------------------- */
 150
 151 typedef struct IDEDrive {
 152     IDEDevice dev;
 153 } IDEDrive;
 154
 155 static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
 156 {
 157     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 158     IDEState *s = bus->ifs + dev->unit;
 159     Error *err = NULL;
 160
 161     if (dev->conf.discard_granularity == -1) {
 162         dev->conf.discard_granularity = 512;
 163     } else if (dev->conf.discard_granularity &&
 164                dev->conf.discard_granularity != 512) {
 165         error_report("discard_granularity must be 512 for ide");
 166         return -1;
 167     }
 168
 169     blkconf_blocksizes(&dev->conf);
 170     if (dev->conf.logical_block_size != 512) {
 171         error_report("logical_block_size must be 512 for IDE");
 172         return -1;
 173     }
 174
 175     blkconf_serial(&dev->conf, &dev->serial);
 176     if (kind != IDE_CD) {
 177         blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255, &err);
 178         if (err) {
 179             error_report_err(err);
 180             return -1;
 181         }
 182     }
 183     blkconf_apply_backend_options(&dev->conf);
 184
 185     if (ide_init_drive(s, dev->conf.blk, kind,
 186                        dev->version, dev->serial, dev->model, dev->wwn,
 187                        dev->conf.cyls, dev->conf.heads, dev->conf.secs,
 188                        dev->chs_trans) < 0) {
 189         return -1;
 190     }
 191
 192     if (!dev->version) {
 193         dev->version = g_strdup(s->version);
 194     }
 195     if (!dev->serial) {
 196         dev->serial = g_strdup(s->drive_serial_str);
 197     }
 198
 199     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 200                          dev->unit ? "/disk@1" : "/disk@0");
 201
 202     return 0;
 203 }
 204
 205 static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
 206                                   void *opaque, Error **errp)
 207 {
 208     IDEDevice *d = IDE_DEVICE(obj);
 209
 210     visit_type_int32(v, name, &d->conf.bootindex, errp);
 211 }
 212
 213 static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name,
 214                                   void *opaque, Error **errp)
 215 {
 216     IDEDevice *d = IDE_DEVICE(obj);
 217     int32_t boot_index;
 218     Error *local_err = NULL;
 219
 220     visit_type_int32(v, name, &boot_index, &local_err);
 221     if (local_err) {
 222         goto out;
 223     }
 224     /* check whether bootindex is present in fw_boot_order list  */
 225     check_boot_index(boot_index, &local_err);
 226     if (local_err) {
 227         goto out;
 228     }
 229     /* change bootindex to a new one */
 230     d->conf.bootindex = boot_index;
 231
 232     if (d->unit != -1) {
 233         add_boot_device_path(d->conf.bootindex, &d->qdev,
 234                              d->unit ? "/disk@1" : "/disk@0");
 235     }
 236 out:
 237     error_propagate(errp, local_err);
 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)