1 /* 2 * IDE device functions 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 2.1 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 20 #include "qemu/osdep.h" 21 #include "qapi/error.h" 22 #include "qapi/qapi-types-block.h" 23 #include "qemu/error-report.h" 24 #include "qemu/module.h" 25 #include "hw/ide/ide-dev.h" 26 #include "sysemu/block-backend.h" 27 #include "sysemu/blockdev.h" 28 #include "sysemu/sysemu.h" 29 #include "qapi/visitor.h" 30 #include "ide-internal.h" 31 32 static Property ide_props[] = { 33 DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1), 34 DEFINE_PROP_END_OF_LIST(), 35 }; 36 37 static void ide_qdev_realize(DeviceState *qdev, Error **errp) 38 { 39 IDEDevice *dev = IDE_DEVICE(qdev); 40 IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev); 41 IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus); 42 43 if (dev->unit == -1) { 44 dev->unit = bus->master ? 1 : 0; 45 } 46 47 if (dev->unit >= bus->max_units) { 48 error_setg(errp, "Can't create IDE unit %d, bus supports only %d units", 49 dev->unit, bus->max_units); 50 return; 51 } 52 53 switch (dev->unit) { 54 case 0: 55 if (bus->master) { 56 error_setg(errp, "IDE unit %d is in use", dev->unit); 57 return; 58 } 59 bus->master = dev; 60 break; 61 case 1: 62 if (bus->slave) { 63 error_setg(errp, "IDE unit %d is in use", dev->unit); 64 return; 65 } 66 bus->slave = dev; 67 break; 68 default: 69 error_setg(errp, "Invalid IDE unit %d", dev->unit); 70 return; 71 } 72 dc->realize(dev, errp); 73 } 74 75 void ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind, Error **errp) 76 { 77 IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus); 78 IDEState *s = bus->ifs + dev->unit; 79 int ret; 80 81 if (!dev->conf.blk) { 82 if (kind != IDE_CD) { 83 error_setg(errp, "No drive specified"); 84 return; 85 } else { 86 /* Anonymous BlockBackend for an empty drive */ 87 dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); 88 ret = blk_attach_dev(dev->conf.blk, &dev->qdev); 89 assert(ret == 0); 90 } 91 } 92 93 if (dev->conf.discard_granularity == -1) { 94 dev->conf.discard_granularity = 512; 95 } else if (dev->conf.discard_granularity && 96 dev->conf.discard_granularity != 512) { 97 error_setg(errp, "discard_granularity must be 512 for ide"); 98 return; 99 } 100 101 if (!blkconf_blocksizes(&dev->conf, errp)) { 102 return; 103 } 104 105 if (dev->conf.logical_block_size != 512) { 106 error_setg(errp, "logical_block_size must be 512 for IDE"); 107 return; 108 } 109 110 if (kind != IDE_CD) { 111 if (!blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255, 112 errp)) { 113 return; 114 } 115 } 116 if (!blkconf_apply_backend_options(&dev->conf, kind == IDE_CD, 117 kind != IDE_CD, errp)) { 118 return; 119 } 120 121 if (ide_init_drive(s, dev->conf.blk, kind, 122 dev->version, dev->serial, dev->model, dev->wwn, 123 dev->conf.cyls, dev->conf.heads, dev->conf.secs, 124 dev->chs_trans, errp) < 0) { 125 return; 126 } 127 128 if (!dev->version) { 129 dev->version = g_strdup(s->version); 130 } 131 if (!dev->serial) { 132 dev->serial = g_strdup(s->drive_serial_str); 133 } 134 135 add_boot_device_path(dev->conf.bootindex, &dev->qdev, 136 dev->unit ? "/disk@1" : "/disk@0"); 137 138 add_boot_device_lchs(&dev->qdev, dev->unit ? "/disk@1" : "/disk@0", 139 dev->conf.lcyls, 140 dev->conf.lheads, 141 dev->conf.lsecs); 142 } 143 144 static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name, 145 void *opaque, Error **errp) 146 { 147 IDEDevice *d = IDE_DEVICE(obj); 148 149 visit_type_int32(v, name, &d->conf.bootindex, errp); 150 } 151 152 static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name, 153 void *opaque, Error **errp) 154 { 155 IDEDevice *d = IDE_DEVICE(obj); 156 int32_t boot_index; 157 Error *local_err = NULL; 158 159 if (!visit_type_int32(v, name, &boot_index, errp)) { 160 return; 161 } 162 /* check whether bootindex is present in fw_boot_order list */ 163 check_boot_index(boot_index, &local_err); 164 if (local_err) { 165 goto out; 166 } 167 /* change bootindex to a new one */ 168 d->conf.bootindex = boot_index; 169 170 if (d->unit != -1) { 171 add_boot_device_path(d->conf.bootindex, &d->qdev, 172 d->unit ? "/disk@1" : "/disk@0"); 173 } 174 out: 175 error_propagate(errp, local_err); 176 } 177 178 static void ide_dev_instance_init(Object *obj) 179 { 180 object_property_add(obj, "bootindex", "int32", 181 ide_dev_get_bootindex, 182 ide_dev_set_bootindex, NULL, NULL); 183 object_property_set_int(obj, "bootindex", -1, NULL); 184 } 185 186 static void ide_hd_realize(IDEDevice *dev, Error **errp) 187 { 188 ide_dev_initfn(dev, IDE_HD, errp); 189 } 190 191 static void ide_cd_realize(IDEDevice *dev, Error **errp) 192 { 193 ide_dev_initfn(dev, IDE_CD, errp); 194 } 195 196 static Property ide_hd_properties[] = { 197 DEFINE_IDE_DEV_PROPERTIES(), 198 DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf), 199 DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans", 200 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO), 201 DEFINE_PROP_UINT16("rotation_rate", IDEDrive, dev.rotation_rate, 0), 202 DEFINE_PROP_END_OF_LIST(), 203 }; 204 205 static void ide_hd_class_init(ObjectClass *klass, void *data) 206 { 207 DeviceClass *dc = DEVICE_CLASS(klass); 208 IDEDeviceClass *k = IDE_DEVICE_CLASS(klass); 209 210 k->realize = ide_hd_realize; 211 dc->fw_name = "drive"; 212 dc->desc = "virtual IDE disk"; 213 device_class_set_props(dc, ide_hd_properties); 214 } 215 216 static const TypeInfo ide_hd_info = { 217 .name = "ide-hd", 218 .parent = TYPE_IDE_DEVICE, 219 .instance_size = sizeof(IDEDrive), 220 .class_init = ide_hd_class_init, 221 }; 222 223 static Property ide_cd_properties[] = { 224 DEFINE_IDE_DEV_PROPERTIES(), 225 DEFINE_PROP_END_OF_LIST(), 226 }; 227 228 static void ide_cd_class_init(ObjectClass *klass, void *data) 229 { 230 DeviceClass *dc = DEVICE_CLASS(klass); 231 IDEDeviceClass *k = IDE_DEVICE_CLASS(klass); 232 233 k->realize = ide_cd_realize; 234 dc->fw_name = "drive"; 235 dc->desc = "virtual IDE CD-ROM"; 236 device_class_set_props(dc, ide_cd_properties); 237 } 238 239 static const TypeInfo ide_cd_info = { 240 .name = "ide-cd", 241 .parent = TYPE_IDE_DEVICE, 242 .instance_size = sizeof(IDEDrive), 243 .class_init = ide_cd_class_init, 244 }; 245 246 static void ide_device_class_init(ObjectClass *klass, void *data) 247 { 248 DeviceClass *k = DEVICE_CLASS(klass); 249 k->realize = ide_qdev_realize; 250 set_bit(DEVICE_CATEGORY_STORAGE, k->categories); 251 k->bus_type = TYPE_IDE_BUS; 252 device_class_set_props(k, ide_props); 253 } 254 255 static const TypeInfo ide_device_type_info = { 256 .name = TYPE_IDE_DEVICE, 257 .parent = TYPE_DEVICE, 258 .instance_size = sizeof(IDEDevice), 259 .abstract = true, 260 .class_size = sizeof(IDEDeviceClass), 261 .class_init = ide_device_class_init, 262 .instance_init = ide_dev_instance_init, 263 }; 264 265 static void ide_register_types(void) 266 { 267 type_register_static(&ide_hd_info); 268 type_register_static(&ide_cd_info); 269 type_register_static(&ide_device_type_info); 270 } 271 272 type_init(ide_register_types) 273