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, kind, errp) < 0) { 122 return; 123 } 124 125 if (!dev->version) { 126 dev->version = g_strdup(s->version); 127 } 128 if (!dev->serial) { 129 dev->serial = g_strdup(s->drive_serial_str); 130 } 131 132 add_boot_device_path(dev->conf.bootindex, &dev->qdev, 133 dev->unit ? "/disk@1" : "/disk@0"); 134 135 add_boot_device_lchs(&dev->qdev, dev->unit ? "/disk@1" : "/disk@0", 136 dev->conf.lcyls, 137 dev->conf.lheads, 138 dev->conf.lsecs); 139 } 140 141 static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name, 142 void *opaque, Error **errp) 143 { 144 IDEDevice *d = IDE_DEVICE(obj); 145 146 visit_type_int32(v, name, &d->conf.bootindex, errp); 147 } 148 149 static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name, 150 void *opaque, Error **errp) 151 { 152 IDEDevice *d = IDE_DEVICE(obj); 153 int32_t boot_index; 154 Error *local_err = NULL; 155 156 if (!visit_type_int32(v, name, &boot_index, errp)) { 157 return; 158 } 159 /* check whether bootindex is present in fw_boot_order list */ 160 check_boot_index(boot_index, &local_err); 161 if (local_err) { 162 goto out; 163 } 164 /* change bootindex to a new one */ 165 d->conf.bootindex = boot_index; 166 167 if (d->unit != -1) { 168 add_boot_device_path(d->conf.bootindex, &d->qdev, 169 d->unit ? "/disk@1" : "/disk@0"); 170 } 171 out: 172 error_propagate(errp, local_err); 173 } 174 175 static void ide_dev_instance_init(Object *obj) 176 { 177 object_property_add(obj, "bootindex", "int32", 178 ide_dev_get_bootindex, 179 ide_dev_set_bootindex, NULL, NULL); 180 object_property_set_int(obj, "bootindex", -1, NULL); 181 } 182 183 static void ide_hd_realize(IDEDevice *dev, Error **errp) 184 { 185 ide_dev_initfn(dev, IDE_HD, errp); 186 } 187 188 static void ide_cd_realize(IDEDevice *dev, Error **errp) 189 { 190 ide_dev_initfn(dev, IDE_CD, errp); 191 } 192 193 static Property ide_hd_properties[] = { 194 DEFINE_IDE_DEV_PROPERTIES(), 195 DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf), 196 DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans", 197 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO), 198 DEFINE_PROP_UINT16("rotation_rate", IDEDrive, dev.rotation_rate, 0), 199 DEFINE_PROP_END_OF_LIST(), 200 }; 201 202 static void ide_hd_class_init(ObjectClass *klass, void *data) 203 { 204 DeviceClass *dc = DEVICE_CLASS(klass); 205 IDEDeviceClass *k = IDE_DEVICE_CLASS(klass); 206 207 k->realize = ide_hd_realize; 208 dc->fw_name = "drive"; 209 dc->desc = "virtual IDE disk"; 210 device_class_set_props(dc, ide_hd_properties); 211 } 212 213 static const TypeInfo ide_hd_info = { 214 .name = "ide-hd", 215 .parent = TYPE_IDE_DEVICE, 216 .instance_size = sizeof(IDEDrive), 217 .class_init = ide_hd_class_init, 218 }; 219 220 static Property ide_cd_properties[] = { 221 DEFINE_IDE_DEV_PROPERTIES(), 222 DEFINE_PROP_END_OF_LIST(), 223 }; 224 225 static void ide_cd_class_init(ObjectClass *klass, void *data) 226 { 227 DeviceClass *dc = DEVICE_CLASS(klass); 228 IDEDeviceClass *k = IDE_DEVICE_CLASS(klass); 229 230 k->realize = ide_cd_realize; 231 dc->fw_name = "drive"; 232 dc->desc = "virtual IDE CD-ROM"; 233 device_class_set_props(dc, ide_cd_properties); 234 } 235 236 static const TypeInfo ide_cd_info = { 237 .name = "ide-cd", 238 .parent = TYPE_IDE_DEVICE, 239 .instance_size = sizeof(IDEDrive), 240 .class_init = ide_cd_class_init, 241 }; 242 243 static void ide_device_class_init(ObjectClass *klass, void *data) 244 { 245 DeviceClass *k = DEVICE_CLASS(klass); 246 k->realize = ide_qdev_realize; 247 set_bit(DEVICE_CATEGORY_STORAGE, k->categories); 248 k->bus_type = TYPE_IDE_BUS; 249 device_class_set_props(k, ide_props); 250 } 251 252 static const TypeInfo ide_device_type_info = { 253 .name = TYPE_IDE_DEVICE, 254 .parent = TYPE_DEVICE, 255 .instance_size = sizeof(IDEDevice), 256 .abstract = true, 257 .class_size = sizeof(IDEDeviceClass), 258 .class_init = ide_device_class_init, 259 .instance_init = ide_dev_instance_init, 260 }; 261 262 static void ide_register_types(void) 263 { 264 type_register_static(&ide_hd_info); 265 type_register_static(&ide_cd_info); 266 type_register_static(&ide_device_type_info); 267 } 268 269 type_init(ide_register_types) 270