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 "dma.h"
  21 #include "qemu-error.h"
  22 #include <hw/ide/internal.h>
  23 #include "blockdev.h"
  24 #include "sysemu.h"
  25
  26 /* --------------------------------- */
  27
  28 static char *idebus_get_fw_dev_path(DeviceState *dev);
  29
  30 static Property ide_props[] = {
  31     DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1),
  32     DEFINE_PROP_END_OF_LIST(),
  33 };
  34
  35 static void ide_bus_class_init(ObjectClass *klass, void *data)
  36 {
  37     BusClass *k = BUS_CLASS(klass);
  38
  39     k->get_fw_dev_path = idebus_get_fw_dev_path;
  40 }
  41
  42 static const TypeInfo ide_bus_info = {
  43     .name = TYPE_IDE_BUS,
  44     .parent = TYPE_BUS,
  45     .instance_size = sizeof(IDEBus),
  46     .class_init = ide_bus_class_init,
  47 };
  48
  49 void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id)
  50 {
  51     qbus_create_inplace(&idebus->qbus, TYPE_IDE_BUS, dev, NULL);
  52     idebus->bus_id = bus_id;
  53 }
  54
  55 static char *idebus_get_fw_dev_path(DeviceState *dev)
  56 {
  57     char path[30];
  58
  59     snprintf(path, sizeof(path), "%s@%d", qdev_fw_name(dev),
  60              ((IDEBus*)dev->parent_bus)->bus_id);
  61
  62     return strdup(path);
  63 }
  64
  65 static int ide_qdev_init(DeviceState *qdev)
  66 {
  67     IDEDevice *dev = IDE_DEVICE(qdev);
  68     IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
  69     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  70
  71     if (!dev->conf.bs) {
  72         error_report("No drive specified");
  73         goto err;
  74     }
  75     if (dev->unit == -1) {
  76         dev->unit = bus->master ? 1 : 0;
  77     }
  78     switch (dev->unit) {
  79     case 0:
  80         if (bus->master) {
  81             error_report("IDE unit %d is in use", dev->unit);
  82             goto err;
  83         }
  84         bus->master = dev;
  85         break;
  86     case 1:
  87         if (bus->slave) {
  88             error_report("IDE unit %d is in use", dev->unit);
  89             goto err;
  90         }
  91         bus->slave = dev;
  92         break;
  93     default:
  94         error_report("Invalid IDE unit %d", dev->unit);
  95         goto err;
  96     }
  97     return dc->init(dev);
  98
  99 err:
 100     return -1;
 101 }
 102
 103 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
 104 {
 105     DeviceState *dev;
 106
 107     dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd");
 108     qdev_prop_set_uint32(dev, "unit", unit);
 109     qdev_prop_set_drive_nofail(dev, "drive", drive->bdrv);
 110     qdev_init_nofail(dev);
 111     return DO_UPCAST(IDEDevice, qdev, dev);
 112 }
 113
 114 void ide_get_bs(BlockDriverState *bs[], BusState *qbus)
 115 {
 116     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qbus);
 117     bs[0] = bus->master ? bus->master->conf.bs : NULL;
 118     bs[1] = bus->slave  ? bus->slave->conf.bs  : NULL;
 119 }
 120
 121 /* --------------------------------- */
 122
 123 typedef struct IDEDrive {
 124     IDEDevice dev;
 125 } IDEDrive;
 126
 127 static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
 128 {
 129     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 130     IDEState *s = bus->ifs + dev->unit;
 131     const char *serial;
 132     DriveInfo *dinfo;
 133
 134     if (dev->conf.discard_granularity && dev->conf.discard_granularity != 512) {
 135         error_report("discard_granularity must be 512 for ide");
 136         return -1;
 137     }
 138
 139     serial = dev->serial;
 140     if (!serial) {
 141         /* try to fall back to value set with legacy -drive serial=... */
 142         dinfo = drive_get_by_blockdev(dev->conf.bs);
 143         if (*dinfo->serial) {
 144             serial = dinfo->serial;
 145         }
 146     }
 147
 148     if (ide_init_drive(s, dev->conf.bs, kind,
 149                        dev->version, serial, dev->model, dev->wwn) < 0) {
 150         return -1;
 151     }
 152
 153     if (!dev->version) {
 154         dev->version = g_strdup(s->version);
 155     }
 156     if (!dev->serial) {
 157         dev->serial = g_strdup(s->drive_serial_str);
 158     }
 159
 160     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 161                          dev->unit ? "/disk@1" : "/disk@0");
 162
 163     return 0;
 164 }
 165
 166 static int ide_hd_initfn(IDEDevice *dev)
 167 {
 168     return ide_dev_initfn(dev, IDE_HD);
 169 }
 170
 171 static int ide_cd_initfn(IDEDevice *dev)
 172 {
 173     return ide_dev_initfn(dev, IDE_CD);
 174 }
 175
 176 static int ide_drive_initfn(IDEDevice *dev)
 177 {
 178     DriveInfo *dinfo = drive_get_by_blockdev(dev->conf.bs);
 179
 180     return ide_dev_initfn(dev, dinfo->media_cd ? IDE_CD : IDE_HD);
 181 }
 182
 183 #define DEFINE_IDE_DEV_PROPERTIES()                     \
 184     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
 185     DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),  \
 186     DEFINE_PROP_HEX64("wwn",  IDEDrive, dev.wwn, 0),    \
 187     DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),\
 188     DEFINE_PROP_STRING("model", IDEDrive, dev.model)
 189
 190 static Property ide_hd_properties[] = {
 191     DEFINE_IDE_DEV_PROPERTIES(),
 192     DEFINE_PROP_END_OF_LIST(),
 193 };
 194
 195 static void ide_hd_class_init(ObjectClass *klass, void *data)
 196 {
 197     DeviceClass *dc = DEVICE_CLASS(klass);
 198     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 199     k->init = ide_hd_initfn;
 200     dc->fw_name = "drive";
 201     dc->desc = "virtual IDE disk";
 202     dc->props = ide_hd_properties;
 203 }
 204
 205 static TypeInfo ide_hd_info = {
 206     .name          = "ide-hd",
 207     .parent        = TYPE_IDE_DEVICE,
 208     .instance_size = sizeof(IDEDrive),
 209     .class_init    = ide_hd_class_init,
 210 };
 211
 212 static Property ide_cd_properties[] = {
 213     DEFINE_IDE_DEV_PROPERTIES(),
 214     DEFINE_PROP_END_OF_LIST(),
 215 };
 216
 217 static void ide_cd_class_init(ObjectClass *klass, void *data)
 218 {
 219     DeviceClass *dc = DEVICE_CLASS(klass);
 220     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 221     k->init = ide_cd_initfn;
 222     dc->fw_name = "drive";
 223     dc->desc = "virtual IDE CD-ROM";
 224     dc->props = ide_cd_properties;
 225 }
 226
 227 static TypeInfo ide_cd_info = {
 228     .name          = "ide-cd",
 229     .parent        = TYPE_IDE_DEVICE,
 230     .instance_size = sizeof(IDEDrive),
 231     .class_init    = ide_cd_class_init,
 232 };
 233
 234 static Property ide_drive_properties[] = {
 235     DEFINE_IDE_DEV_PROPERTIES(),
 236     DEFINE_PROP_END_OF_LIST(),
 237 };
 238
 239 static void ide_drive_class_init(ObjectClass *klass, void *data)
 240 {
 241     DeviceClass *dc = DEVICE_CLASS(klass);
 242     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 243     k->init = ide_drive_initfn;
 244     dc->fw_name = "drive";
 245     dc->desc = "virtual IDE disk or CD-ROM (legacy)";
 246     dc->props = ide_drive_properties;
 247 }
 248
 249 static TypeInfo ide_drive_info = {
 250     .name          = "ide-drive",
 251     .parent        = TYPE_IDE_DEVICE,
 252     .instance_size = sizeof(IDEDrive),
 253     .class_init    = ide_drive_class_init,
 254 };
 255
 256 static void ide_device_class_init(ObjectClass *klass, void *data)
 257 {
 258     DeviceClass *k = DEVICE_CLASS(klass);
 259     k->init = ide_qdev_init;
 260     k->bus_type = TYPE_IDE_BUS;
 261     k->props = ide_props;
 262 }
 263
 264 static TypeInfo ide_device_type_info = {
 265     .name = TYPE_IDE_DEVICE,
 266     .parent = TYPE_DEVICE,
 267     .instance_size = sizeof(IDEDevice),
 268     .abstract = true,
 269     .class_size = sizeof(IDEDeviceClass),
 270     .class_init = ide_device_class_init,
 271 };
 272
 273 static void ide_register_types(void)
 274 {
 275     type_register_static(&ide_bus_info);
 276     type_register_static(&ide_hd_info);
 277     type_register_static(&ide_cd_info);
 278     type_register_static(&ide_drive_info);
 279     type_register_static(&ide_device_type_info);
 280 }
 281
 282 type_init(ide_register_types)