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)
  51 {
  52     qbus_create_inplace(&idebus->qbus, TYPE_IDE_BUS, dev, NULL);
  53     idebus->bus_id = bus_id;
  54 }
  55
  56 static char *idebus_get_fw_dev_path(DeviceState *dev)
  57 {
  58     char path[30];
  59
  60     snprintf(path, sizeof(path), "%s@%d", qdev_fw_name(dev),
  61              ((IDEBus*)dev->parent_bus)->bus_id);
  62
  63     return g_strdup(path);
  64 }
  65
  66 static int ide_qdev_init(DeviceState *qdev)
  67 {
  68     IDEDevice *dev = IDE_DEVICE(qdev);
  69     IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
  70     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  71
  72     if (!dev->conf.bs) {
  73         error_report("No drive specified");
  74         goto err;
  75     }
  76     if (dev->unit == -1) {
  77         dev->unit = bus->master ? 1 : 0;
  78     }
  79     switch (dev->unit) {
  80     case 0:
  81         if (bus->master) {
  82             error_report("IDE unit %d is in use", dev->unit);
  83             goto err;
  84         }
  85         bus->master = dev;
  86         break;
  87     case 1:
  88         if (bus->slave) {
  89             error_report("IDE unit %d is in use", dev->unit);
  90             goto err;
  91         }
  92         bus->slave = dev;
  93         break;
  94     default:
  95         error_report("Invalid IDE unit %d", dev->unit);
  96         goto err;
  97     }
  98     return dc->init(dev);
  99
 100 err:
 101     return -1;
 102 }
 103
 104 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
 105 {
 106     DeviceState *dev;
 107
 108     dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd");
 109     qdev_prop_set_uint32(dev, "unit", unit);
 110     qdev_prop_set_drive_nofail(dev, "drive", drive->bdrv);
 111     qdev_init_nofail(dev);
 112     return DO_UPCAST(IDEDevice, qdev, dev);
 113 }
 114
 115 int ide_get_geometry(BusState *bus, int unit,
 116                      int16_t *cyls, int8_t *heads, int8_t *secs)
 117 {
 118     IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
 119
 120     if (s->drive_kind != IDE_HD || !s->bs) {
 121         return -1;
 122     }
 123
 124     *cyls = s->cylinders;
 125     *heads = s->heads;
 126     *secs = s->sectors;
 127     return 0;
 128 }
 129
 130 int ide_get_bios_chs_trans(BusState *bus, int unit)
 131 {
 132     return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
 133 }
 134
 135 /* --------------------------------- */
 136
 137 typedef struct IDEDrive {
 138     IDEDevice dev;
 139 } IDEDrive;
 140
 141 static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
 142 {
 143     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 144     IDEState *s = bus->ifs + dev->unit;
 145
 146     if (dev->conf.discard_granularity == -1) {
 147         dev->conf.discard_granularity = 512;
 148     } else if (dev->conf.discard_granularity &&
 149                dev->conf.discard_granularity != 512) {
 150         error_report("discard_granularity must be 512 for ide");
 151         return -1;
 152     }
 153
 154     blkconf_serial(&dev->conf, &dev->serial);
 155     if (kind != IDE_CD
 156         && blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255) < 0) {
 157         return -1;
 158     }
 159
 160     if (ide_init_drive(s, dev->conf.bs, kind,
 161                        dev->version, dev->serial, dev->model, dev->wwn,
 162                        dev->conf.cyls, dev->conf.heads, dev->conf.secs,
 163                        dev->chs_trans) < 0) {
 164         return -1;
 165     }
 166
 167     if (!dev->version) {
 168         dev->version = g_strdup(s->version);
 169     }
 170     if (!dev->serial) {
 171         dev->serial = g_strdup(s->drive_serial_str);
 172     }
 173
 174     add_boot_device_path(dev->conf.bootindex, &dev->qdev,
 175                          dev->unit ? "/disk@1" : "/disk@0");
 176
 177     return 0;
 178 }
 179
 180 static int ide_hd_initfn(IDEDevice *dev)
 181 {
 182     return ide_dev_initfn(dev, IDE_HD);
 183 }
 184
 185 static int ide_cd_initfn(IDEDevice *dev)
 186 {
 187     return ide_dev_initfn(dev, IDE_CD);
 188 }
 189
 190 static int ide_drive_initfn(IDEDevice *dev)
 191 {
 192     DriveInfo *dinfo = drive_get_by_blockdev(dev->conf.bs);
 193
 194     return ide_dev_initfn(dev, dinfo->media_cd ? IDE_CD : IDE_HD);
 195 }
 196
 197 #define DEFINE_IDE_DEV_PROPERTIES()                     \
 198     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
 199     DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),  \
 200     DEFINE_PROP_HEX64("wwn",  IDEDrive, dev.wwn, 0),    \
 201     DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),\
 202     DEFINE_PROP_STRING("model", IDEDrive, dev.model)
 203
 204 static Property ide_hd_properties[] = {
 205     DEFINE_IDE_DEV_PROPERTIES(),
 206     DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
 207     DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
 208                 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
 209     DEFINE_PROP_END_OF_LIST(),
 210 };
 211
 212 static void ide_hd_class_init(ObjectClass *klass, void *data)
 213 {
 214     DeviceClass *dc = DEVICE_CLASS(klass);
 215     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 216     k->init = ide_hd_initfn;
 217     dc->fw_name = "drive";
 218     dc->desc = "virtual IDE disk";
 219     dc->props = ide_hd_properties;
 220 }
 221
 222 static const TypeInfo ide_hd_info = {
 223     .name          = "ide-hd",
 224     .parent        = TYPE_IDE_DEVICE,
 225     .instance_size = sizeof(IDEDrive),
 226     .class_init    = ide_hd_class_init,
 227 };
 228
 229 static Property ide_cd_properties[] = {
 230     DEFINE_IDE_DEV_PROPERTIES(),
 231     DEFINE_PROP_END_OF_LIST(),
 232 };
 233
 234 static void ide_cd_class_init(ObjectClass *klass, void *data)
 235 {
 236     DeviceClass *dc = DEVICE_CLASS(klass);
 237     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 238     k->init = ide_cd_initfn;
 239     dc->fw_name = "drive";
 240     dc->desc = "virtual IDE CD-ROM";
 241     dc->props = ide_cd_properties;
 242 }
 243
 244 static const TypeInfo ide_cd_info = {
 245     .name          = "ide-cd",
 246     .parent        = TYPE_IDE_DEVICE,
 247     .instance_size = sizeof(IDEDrive),
 248     .class_init    = ide_cd_class_init,
 249 };
 250
 251 static Property ide_drive_properties[] = {
 252     DEFINE_IDE_DEV_PROPERTIES(),
 253     DEFINE_PROP_END_OF_LIST(),
 254 };
 255
 256 static void ide_drive_class_init(ObjectClass *klass, void *data)
 257 {
 258     DeviceClass *dc = DEVICE_CLASS(klass);
 259     IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
 260     k->init = ide_drive_initfn;
 261     dc->fw_name = "drive";
 262     dc->desc = "virtual IDE disk or CD-ROM (legacy)";
 263     dc->props = ide_drive_properties;
 264 }
 265
 266 static const TypeInfo ide_drive_info = {
 267     .name          = "ide-drive",
 268     .parent        = TYPE_IDE_DEVICE,
 269     .instance_size = sizeof(IDEDrive),
 270     .class_init    = ide_drive_class_init,
 271 };
 272
 273 static void ide_device_class_init(ObjectClass *klass, void *data)
 274 {
 275     DeviceClass *k = DEVICE_CLASS(klass);
 276     k->init = ide_qdev_init;
 277     k->bus_type = TYPE_IDE_BUS;
 278     k->props = ide_props;
 279 }
 280
 281 static const TypeInfo ide_device_type_info = {
 282     .name = TYPE_IDE_DEVICE,
 283     .parent = TYPE_DEVICE,
 284     .instance_size = sizeof(IDEDevice),
 285     .abstract = true,
 286     .class_size = sizeof(IDEDeviceClass),
 287     .class_init = ide_device_class_init,
 288 };
 289
 290 static void ide_register_types(void)
 291 {
 292     type_register_static(&ide_bus_info);
 293     type_register_static(&ide_hd_info);
 294     type_register_static(&ide_cd_info);
 295     type_register_static(&ide_drive_info);
 296     type_register_static(&ide_device_type_info);
 297 }
 298
 299 type_init(ide_register_types)