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