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