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 | |
38 | static char *idebus_get_fw_dev_path(DeviceState *dev); |
39 | static void idebus_unrealize(BusState *qdev, Error **errp); |
40 | |
41 | static Property ide_props[] = { |
42 | DEFINE_PROP_UINT32("unit" , IDEDevice, unit, -1), |
43 | DEFINE_PROP_END_OF_LIST(), |
44 | }; |
45 | |
46 | static 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 | |
54 | static 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 | |
63 | static 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 | |
70 | void 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 | |
78 | static 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 | |
88 | static 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 | |
126 | IDEDevice *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 | |
138 | int 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 | |
153 | int 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 | |
160 | typedef struct IDEDrive { |
161 | IDEDevice dev; |
162 | } IDEDrive; |
163 | |
164 | static 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 | |
225 | static 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 | |
233 | static 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 | } |
256 | out: |
257 | error_propagate(errp, local_err); |
258 | } |
259 | |
260 | static 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 | |
268 | static void ide_hd_realize(IDEDevice *dev, Error **errp) |
269 | { |
270 | ide_dev_initfn(dev, IDE_HD, errp); |
271 | } |
272 | |
273 | static void ide_cd_realize(IDEDevice *dev, Error **errp) |
274 | { |
275 | ide_dev_initfn(dev, IDE_CD, errp); |
276 | } |
277 | |
278 | static 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 | |
297 | static 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 | |
306 | static 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 | |
317 | static 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 | |
324 | static Property ide_cd_properties[] = { |
325 | DEFINE_IDE_DEV_PROPERTIES(), |
326 | DEFINE_PROP_END_OF_LIST(), |
327 | }; |
328 | |
329 | static 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 | |
340 | static 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 | |
347 | static Property ide_drive_properties[] = { |
348 | DEFINE_IDE_DEV_PROPERTIES(), |
349 | DEFINE_PROP_END_OF_LIST(), |
350 | }; |
351 | |
352 | static 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 | |
363 | static 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 | |
370 | static 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 | |
379 | static 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 | |
389 | static 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 | |
398 | type_init(ide_register_types) |
399 | |