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 2.1 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 "sysemu/dma.h"
22 #include "qapi/error.h"
23 #include "qapi/qapi-types-block.h"
24 #include "qemu/error-report.h"
25 #include "qemu/main-loop.h"
26 #include "qemu/module.h"
27 #include "hw/ide/internal.h"
28 #include "hw/qdev-properties.h"
29 #include "hw/qdev-properties-system.h"
30 #include "sysemu/block-backend.h"
31 #include "sysemu/blockdev.h"
32 #include "hw/block/block.h"
33 #include "sysemu/sysemu.h"
34 #include "sysemu/runstate.h"
35 #include "qapi/visitor.h"
36
37 /* --------------------------------- */
38
39 static char *idebus_get_fw_dev_path(DeviceState *dev);
40 static void idebus_unrealize(BusState *qdev);
41
42 static Property ide_props[] = {
43 DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1),
44 DEFINE_PROP_END_OF_LIST(),
45 };
46
ide_bus_class_init(ObjectClass * klass,void * data)47 static void ide_bus_class_init(ObjectClass *klass, void *data)
48 {
49 BusClass *k = BUS_CLASS(klass);
50
51 k->get_fw_dev_path = idebus_get_fw_dev_path;
52 k->unrealize = idebus_unrealize;
53 }
54
idebus_unrealize(BusState * bus)55 static void idebus_unrealize(BusState *bus)
56 {
57 IDEBus *ibus = IDE_BUS(bus);
58
59 if (ibus->vmstate) {
60 qemu_del_vm_change_state_handler(ibus->vmstate);
61 }
62 }
63
64 static const TypeInfo ide_bus_info = {
65 .name = TYPE_IDE_BUS,
66 .parent = TYPE_BUS,
67 .instance_size = sizeof(IDEBus),
68 .class_init = ide_bus_class_init,
69 };
70
ide_bus_init(IDEBus * idebus,size_t idebus_size,DeviceState * dev,int bus_id,int max_units)71 void ide_bus_init(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
72 int bus_id, int max_units)
73 {
74 qbus_init(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL);
75 idebus->bus_id = bus_id;
76 idebus->max_units = max_units;
77 }
78
idebus_get_fw_dev_path(DeviceState * dev)79 static char *idebus_get_fw_dev_path(DeviceState *dev)
80 {
81 char path[30];
82
83 snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev),
84 ((IDEBus*)dev->parent_bus)->bus_id);
85
86 return g_strdup(path);
87 }
88
ide_qdev_realize(DeviceState * qdev,Error ** errp)89 static void ide_qdev_realize(DeviceState *qdev, Error **errp)
90 {
91 IDEDevice *dev = IDE_DEVICE(qdev);
92 IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
93 IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
94
95 if (dev->unit == -1) {
96 dev->unit = bus->master ? 1 : 0;
97 }
98
99 if (dev->unit >= bus->max_units) {
100 error_setg(errp, "Can't create IDE unit %d, bus supports only %d units",
101 dev->unit, bus->max_units);
102 return;
103 }
104
105 switch (dev->unit) {
106 case 0:
107 if (bus->master) {
108 error_setg(errp, "IDE unit %d is in use", dev->unit);
109 return;
110 }
111 bus->master = dev;
112 break;
113 case 1:
114 if (bus->slave) {
115 error_setg(errp, "IDE unit %d is in use", dev->unit);
116 return;
117 }
118 bus->slave = dev;
119 break;
120 default:
121 error_setg(errp, "Invalid IDE unit %d", dev->unit);
122 return;
123 }
124 dc->realize(dev, errp);
125 }
126
ide_bus_create_drive(IDEBus * bus,int unit,DriveInfo * drive)127 IDEDevice *ide_bus_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
128 {
129 DeviceState *dev;
130
131 dev = qdev_new(drive->media_cd ? "ide-cd" : "ide-hd");
132 qdev_prop_set_uint32(dev, "unit", unit);
133 qdev_prop_set_drive_err(dev, "drive", blk_by_legacy_dinfo(drive),
134 &error_fatal);
135 qdev_realize_and_unref(dev, &bus->qbus, &error_fatal);
136 return DO_UPCAST(IDEDevice, qdev, dev);
137 }
138
ide_get_geometry(BusState * bus,int unit,int16_t * cyls,int8_t * heads,int8_t * secs)139 int ide_get_geometry(BusState *bus, int unit,
140 int16_t *cyls, int8_t *heads, int8_t *secs)
141 {
142 IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
143
144 if (s->drive_kind != IDE_HD || !s->blk) {
145 return -1;
146 }
147
148 *cyls = s->cylinders;
149 *heads = s->heads;
150 *secs = s->sectors;
151 return 0;
152 }
153
ide_get_bios_chs_trans(BusState * bus,int unit)154 int ide_get_bios_chs_trans(BusState *bus, int unit)
155 {
156 return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
157 }
158
159 /* --------------------------------- */
160
161 typedef struct IDEDrive {
162 IDEDevice dev;
163 } IDEDrive;
164
ide_dev_initfn(IDEDevice * dev,IDEDriveKind kind,Error ** errp)165 static void ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind, Error **errp)
166 {
167 IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
168 IDEState *s = bus->ifs + dev->unit;
169 int ret;
170
171 if (!dev->conf.blk) {
172 if (kind != IDE_CD) {
173 error_setg(errp, "No drive specified");
174 return;
175 } else {
176 /* Anonymous BlockBackend for an empty drive */
177 dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL);
178 ret = blk_attach_dev(dev->conf.blk, &dev->qdev);
179 assert(ret == 0);
180 }
181 }
182
183 if (dev->conf.discard_granularity == -1) {
184 dev->conf.discard_granularity = 512;
185 } else if (dev->conf.discard_granularity &&
186 dev->conf.discard_granularity != 512) {
187 error_setg(errp, "discard_granularity must be 512 for ide");
188 return;
189 }
190
191 if (!blkconf_blocksizes(&dev->conf, errp)) {
192 return;
193 }
194
195 if (dev->conf.logical_block_size != 512) {
196 error_setg(errp, "logical_block_size must be 512 for IDE");
197 return;
198 }
199
200 if (kind != IDE_CD) {
201 if (!blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255,
202 errp)) {
203 return;
204 }
205 }
206 if (!blkconf_apply_backend_options(&dev->conf, kind == IDE_CD,
207 kind != IDE_CD, errp)) {
208 return;
209 }
210
211 if (ide_init_drive(s, dev->conf.blk, kind,
212 dev->version, dev->serial, dev->model, dev->wwn,
213 dev->conf.cyls, dev->conf.heads, dev->conf.secs,
214 dev->chs_trans, errp) < 0) {
215 return;
216 }
217
218 if (!dev->version) {
219 dev->version = g_strdup(s->version);
220 }
221 if (!dev->serial) {
222 dev->serial = g_strdup(s->drive_serial_str);
223 }
224
225 add_boot_device_path(dev->conf.bootindex, &dev->qdev,
226 dev->unit ? "/disk@1" : "/disk@0");
227
228 add_boot_device_lchs(&dev->qdev, dev->unit ? "/disk@1" : "/disk@0",
229 dev->conf.lcyls,
230 dev->conf.lheads,
231 dev->conf.lsecs);
232 }
233
ide_dev_get_bootindex(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)234 static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
235 void *opaque, Error **errp)
236 {
237 IDEDevice *d = IDE_DEVICE(obj);
238
239 visit_type_int32(v, name, &d->conf.bootindex, errp);
240 }
241
ide_dev_set_bootindex(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)242 static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name,
243 void *opaque, Error **errp)
244 {
245 IDEDevice *d = IDE_DEVICE(obj);
246 int32_t boot_index;
247 Error *local_err = NULL;
248
249 if (!visit_type_int32(v, name, &boot_index, errp)) {
250 return;
251 }
252 /* check whether bootindex is present in fw_boot_order list */
253 check_boot_index(boot_index, &local_err);
254 if (local_err) {
255 goto out;
256 }
257 /* change bootindex to a new one */
258 d->conf.bootindex = boot_index;
259
260 if (d->unit != -1) {
261 add_boot_device_path(d->conf.bootindex, &d->qdev,
262 d->unit ? "/disk@1" : "/disk@0");
263 }
264 out:
265 error_propagate(errp, local_err);
266 }
267
ide_dev_instance_init(Object * obj)268 static void ide_dev_instance_init(Object *obj)
269 {
270 object_property_add(obj, "bootindex", "int32",
271 ide_dev_get_bootindex,
272 ide_dev_set_bootindex, NULL, NULL);
273 object_property_set_int(obj, "bootindex", -1, NULL);
274 }
275
ide_hd_realize(IDEDevice * dev,Error ** errp)276 static void ide_hd_realize(IDEDevice *dev, Error **errp)
277 {
278 ide_dev_initfn(dev, IDE_HD, errp);
279 }
280
ide_cd_realize(IDEDevice * dev,Error ** errp)281 static void ide_cd_realize(IDEDevice *dev, Error **errp)
282 {
283 ide_dev_initfn(dev, IDE_CD, errp);
284 }
285
ide_cf_realize(IDEDevice * dev,Error ** errp)286 static void ide_cf_realize(IDEDevice *dev, Error **errp)
287 {
288 ide_dev_initfn(dev, IDE_CFATA, errp);
289 }
290
291 #define DEFINE_IDE_DEV_PROPERTIES() \
292 DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf), \
293 DEFINE_BLOCK_ERROR_PROPERTIES(IDEDrive, dev.conf), \
294 DEFINE_PROP_STRING("ver", IDEDrive, dev.version), \
295 DEFINE_PROP_UINT64("wwn", IDEDrive, dev.wwn, 0), \
296 DEFINE_PROP_STRING("serial", IDEDrive, dev.serial),\
297 DEFINE_PROP_STRING("model", IDEDrive, dev.model)
298
299 static Property ide_hd_properties[] = {
300 DEFINE_IDE_DEV_PROPERTIES(),
301 DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
302 DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
303 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
304 DEFINE_PROP_UINT16("rotation_rate", IDEDrive, dev.rotation_rate, 0),
305 DEFINE_PROP_END_OF_LIST(),
306 };
307
ide_hd_class_init(ObjectClass * klass,void * data)308 static void ide_hd_class_init(ObjectClass *klass, void *data)
309 {
310 DeviceClass *dc = DEVICE_CLASS(klass);
311 IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
312
313 k->realize = ide_hd_realize;
314 dc->fw_name = "drive";
315 dc->desc = "virtual IDE disk";
316 device_class_set_props(dc, ide_hd_properties);
317 }
318
319 static const TypeInfo ide_hd_info = {
320 .name = "ide-hd",
321 .parent = TYPE_IDE_DEVICE,
322 .instance_size = sizeof(IDEDrive),
323 .class_init = ide_hd_class_init,
324 };
325
326 static Property ide_cd_properties[] = {
327 DEFINE_IDE_DEV_PROPERTIES(),
328 DEFINE_PROP_END_OF_LIST(),
329 };
330
ide_cd_class_init(ObjectClass * klass,void * data)331 static void ide_cd_class_init(ObjectClass *klass, void *data)
332 {
333 DeviceClass *dc = DEVICE_CLASS(klass);
334 IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
335
336 k->realize = ide_cd_realize;
337 dc->fw_name = "drive";
338 dc->desc = "virtual IDE CD-ROM";
339 device_class_set_props(dc, ide_cd_properties);
340 }
341
342 static const TypeInfo ide_cd_info = {
343 .name = "ide-cd",
344 .parent = TYPE_IDE_DEVICE,
345 .instance_size = sizeof(IDEDrive),
346 .class_init = ide_cd_class_init,
347 };
348
349 static Property ide_cf_properties[] = {
350 DEFINE_IDE_DEV_PROPERTIES(),
351 DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
352 DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
353 IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
354 DEFINE_PROP_END_OF_LIST(),
355 };
356
ide_cf_class_init(ObjectClass * klass,void * data)357 static void ide_cf_class_init(ObjectClass *klass, void *data)
358 {
359 DeviceClass *dc = DEVICE_CLASS(klass);
360 IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
361
362 k->realize = ide_cf_realize;
363 dc->fw_name = "drive";
364 dc->desc = "virtual CompactFlash card";
365 device_class_set_props(dc, ide_cf_properties);
366 }
367
368 static const TypeInfo ide_cf_info = {
369 .name = "ide-cf",
370 .parent = TYPE_IDE_DEVICE,
371 .instance_size = sizeof(IDEDrive),
372 .class_init = ide_cf_class_init,
373 };
374
ide_device_class_init(ObjectClass * klass,void * data)375 static void ide_device_class_init(ObjectClass *klass, void *data)
376 {
377 DeviceClass *k = DEVICE_CLASS(klass);
378 k->realize = ide_qdev_realize;
379 set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
380 k->bus_type = TYPE_IDE_BUS;
381 device_class_set_props(k, ide_props);
382 }
383
384 static const TypeInfo ide_device_type_info = {
385 .name = TYPE_IDE_DEVICE,
386 .parent = TYPE_DEVICE,
387 .instance_size = sizeof(IDEDevice),
388 .abstract = true,
389 .class_size = sizeof(IDEDeviceClass),
390 .class_init = ide_device_class_init,
391 .instance_init = ide_dev_instance_init,
392 };
393
ide_register_types(void)394 static void ide_register_types(void)
395 {
396 type_register_static(&ide_bus_info);
397 type_register_static(&ide_hd_info);
398 type_register_static(&ide_cd_info);
399 type_register_static(&ide_cf_info);
400 type_register_static(&ide_device_type_info);
401 }
402
403 type_init(ide_register_types)
404