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/blockdev.h"
  24 #include "hw/block/block.h"
  25 #include "sysemu/sysemu.h"
  26
  27 /* --------------------------------- */
  28
  29 static char *idebus_get_fw_dev_path(DeviceState *dev);
  30
  31 static Property ide_props[] = {
  32     DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1),
  33     DEFINE_PROP_END_OF_LIST(),
  34 };
  35
  36 static void ide_bus_class_init(ObjectClass *klass, void *data)
  37 {
  38     BusClass *k = BUS_CLASS(klass);
  39
  40     k->get_fw_dev_path = idebus_get_fw_dev_path;
  41 }
  42
  43 static const TypeInfo ide_bus_info = {
  44     .name = TYPE_IDE_BUS,
  45     .parent = TYPE_BUS,
  46     .instance_size = sizeof(IDEBus),
  47     .class_init = ide_bus_class_init,
  48 };
  49
  50 void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id, int max_units)
  51 {
  52     qbus_create_inplace(&idebus->qbus, TYPE_IDE_BUS, dev, NULL);
  53     idebus->bus_id = bus_id;
  54     idebus->max_units = max_units;
  55 }
  56
  57 static char *idebus_get_fw_dev_path(DeviceState *dev)
  58 {
  59     char path[30];
  60
  61     snprintf(path, sizeof(path), "%s@%d", qdev_fw_name(dev),
  62              ((IDEBus*)dev->parent_bus)->bus_id);
  63
  64     return g_strdup(path);
  65 }
  66
  67 static int ide_qdev_init(DeviceState *qdev)
  68 {
  69     IDEDevice *dev = IDE_DEVICE(qdev);
  70     IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
  71     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  72
  73     if (!dev->conf.bs) {
  74         error_report("No drive specified");
  75         goto err;
  76     }
  77     if (dev->unit == -1) {
  78         dev->unit = bus->master ? 1 : 0;
  79     }
  80
  81     if (dev->unit >= bus->max_units) {
  82         error_report("Can't create IDE unit %d, bus supports only %d units",
  83                      dev->unit, bus->max_units);
  84         goto err;
  85     }
  86
  87     switch (dev->unit) {
  88     case 0:
  89         if (bus->master) {
  90             error_report("IDE unit %d is in use", dev->unit);
  91             goto err;
  92         }
  93         bus->master = dev;
  94         break;
  95     case 1:
  96         if (bus->slave) {
  97             error_report("IDE unit %d is in use", dev->unit);
  98             goto err;
  99         }
 100         bus->slave = dev;
 101         break;
 102     default:
 103         error_report("Invalid IDE unit %d", dev->unit);
 104         goto err;
 105     }
 106     return dc->init(dev);
 107
 108 err:
 109     return -1;
 110 }
 111
 112 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
 113 {
 114     DeviceState *dev;
 115
 116     dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd");
 117     qdev_prop_set_uint32(dev, "unit", unit);
 118     qdev_prop_set_drive_nofail(dev, "drive", drive->bdrv);
 119     qdev_init_nofail(dev);
 120     return DO_UPCAST(IDEDevice, qdev, dev);
 121 }
 122
 123 int ide_get_geometry(BusState *bus, int unit,
 124                      int16_t *cyls, int8_t *heads, int8_t *secs)
 125 {
 126     IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
 127
 128     if (s->drive_kind != IDE_HD || !s->bs) {
 129         return -1;
 130     }
 131
 132     *cyls = s->cylinders;
 133     *heads = s->heads;
 134     *secs = s->sectors;
 135     return 0;
 136 }
 137
 138 int ide_get_bios_chs_trans(BusState *bus, int unit)
 139 {
 140     return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
 141 }
 142
 143 /* --------------------------------- */
 144
 145 typedef struct IDEDrive {
 146     IDEDevice dev;
 147 } IDEDrive;
 148
 149 static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
 150 {
 151     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 152     IDEState *s = bus->ifs + dev->unit;
 153
 154     if (dev->conf.discard_granularity == -1) {
 155         dev->conf.discard_granularity = 512;
 156     } else if (dev->conf.discard_granularity &&
 157                dev->conf.discard_granularity != 512) {
 158         error_report("discard_granularity must be 512 for ide");
 159         return -1;
 160     }
 161
 162     blkconf_serial(&dev->conf, &dev->serial);
 163     if (kind != IDE_CD
 164         && blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255) < 0) {
 165         return -1;
 166     }
 167
 168     if (ide_init_drive(s, dev->conf.bs, kind,
 169                        dev->version, dev->serial, dev->model, dev->wwn,
 170                        dev->conf.cyls, dev->conf.heads, dev->conf.secs,
 171                        dev->chs_trans) < 0) {
 172         return -1;
 173     }
 174
 175     if (!dev->version) {
 176         dev->version = g_strdup(s->version);
 177     }
 178     if (!dev->serial) {
 179         dev->serial = g_strdup(s->drive_serial_str);
 180     }
 181
 182     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 183                          dev->unit ? "/disk@1" : "/disk@0");
 184
 185     return 0;
 186 }
 187
 188 static int ide_hd_initfn(IDEDevice *dev)
 189 {
 190     return ide_dev_initfn(dev, IDE_HD);
 191 }
 192
 193 static int ide_cd_initfn(IDEDevice *dev)
 194 {
 195     return ide_dev_initfn(dev, IDE_CD);
 196 }
 197
 198 static int ide_drive_initfn(IDEDevice *dev)
 199 {
 200     DriveInfo *dinfo = drive_get_by_blockdev(dev->conf.bs);
 201
 202     return ide_dev_initfn(dev, dinfo->media_cd ? IDE_CD : IDE_HD);
 203 }
 204
 205 #define DEFINE_IDE_DEV_PROPERTIES()                     \
 206     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
 207     DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),  \
 208     DEFINE_PROP_HEX64("wwn",  IDEDrive, dev.wwn, 0),    \
 209     DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),\
 210     DEFINE_PROP_STRING("model", IDEDrive, dev.model)
 211
 212 static Property ide_hd_properties[] = {
 213     DEFINE_IDE_DEV_PROPERTIES(),
 214     DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
 215     DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
 216                 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
 217     DEFINE_PROP_END_OF_LIST(),
 218 };
 219
 220 static void ide_hd_class_init(ObjectClass *klass, void *data)
 221 {
 222     DeviceClass *dc = DEVICE_CLASS(klass);
 223     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 224     k->init = ide_hd_initfn;
 225     dc->fw_name = "drive";
 226     dc->desc = "virtual IDE disk";
 227     dc->props = ide_hd_properties;
 228 }
 229
 230 static const TypeInfo ide_hd_info = {
 231     .name          = "ide-hd",
 232     .parent        = TYPE_IDE_DEVICE,
 233     .instance_size = sizeof(IDEDrive),
 234     .class_init    = ide_hd_class_init,
 235 };
 236
 237 static Property ide_cd_properties[] = {
 238     DEFINE_IDE_DEV_PROPERTIES(),
 239     DEFINE_PROP_END_OF_LIST(),
 240 };
 241
 242 static void ide_cd_class_init(ObjectClass *klass, void *data)
 243 {
 244     DeviceClass *dc = DEVICE_CLASS(klass);
 245     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 246     k->init = ide_cd_initfn;
 247     dc->fw_name = "drive";
 248     dc->desc = "virtual IDE CD-ROM";
 249     dc->props = ide_cd_properties;
 250 }
 251
 252 static const TypeInfo ide_cd_info = {
 253     .name          = "ide-cd",
 254     .parent        = TYPE_IDE_DEVICE,
 255     .instance_size = sizeof(IDEDrive),
 256     .class_init    = ide_cd_class_init,
 257 };
 258
 259 static Property ide_drive_properties[] = {
 260     DEFINE_IDE_DEV_PROPERTIES(),
 261     DEFINE_PROP_END_OF_LIST(),
 262 };
 263
 264 static void ide_drive_class_init(ObjectClass *klass, void *data)
 265 {
 266     DeviceClass *dc = DEVICE_CLASS(klass);
 267     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 268     k->init = ide_drive_initfn;
 269     dc->fw_name = "drive";
 270     dc->desc = "virtual IDE disk or CD-ROM (legacy)";
 271     dc->props = ide_drive_properties;
 272 }
 273
 274 static const TypeInfo ide_drive_info = {
 275     .name          = "ide-drive",
 276     .parent        = TYPE_IDE_DEVICE,
 277     .instance_size = sizeof(IDEDrive),
 278     .class_init    = ide_drive_class_init,
 279 };
 280
 281 static void ide_device_class_init(ObjectClass *klass, void *data)
 282 {
 283     DeviceClass *k = DEVICE_CLASS(klass);
 284     k->init = ide_qdev_init;
 285     set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
 286     k->bus_type = TYPE_IDE_BUS;
 287     k->props = ide_props;
 288 }
 289
 290 static const TypeInfo ide_device_type_info = {
 291     .name = TYPE_IDE_DEVICE,
 292     .parent = TYPE_DEVICE,
 293     .instance_size = sizeof(IDEDevice),
 294     .abstract = true,
 295     .class_size = sizeof(IDEDeviceClass),
 296     .class_init = ide_device_class_init,
 297 };
 298
 299 static void ide_register_types(void)
 300 {
 301     type_register_static(&ide_bus_info);
 302     type_register_static(&ide_hd_info);
 303     type_register_static(&ide_cd_info);
 304     type_register_static(&ide_drive_info);
 305     type_register_static(&ide_device_type_info);
 306 }
 307
 308 type_init(ide_register_types)