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