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Commit | Line | Data |
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5fafdf24 | 1 | /* |
2e5d83bb PB |
2 | * USB Mass Storage Device emulation |
3 | * | |
4 | * Copyright (c) 2006 CodeSourcery. | |
5 | * Written by Paul Brook | |
6 | * | |
7 | * This code is licenced under the LGPL. | |
8 | */ | |
9 | ||
87ecb68b | 10 | #include "qemu-common.h" |
7fc2f2c0 GH |
11 | #include "qemu-option.h" |
12 | #include "qemu-config.h" | |
87ecb68b | 13 | #include "usb.h" |
81bfd2f2 | 14 | #include "usb-desc.h" |
43b443b6 | 15 | #include "scsi.h" |
c0f4ce77 | 16 | #include "console.h" |
b3e461d3 | 17 | #include "monitor.h" |
666daa68 | 18 | #include "sysemu.h" |
2446333c | 19 | #include "blockdev.h" |
2e5d83bb PB |
20 | |
21 | //#define DEBUG_MSD | |
22 | ||
23 | #ifdef DEBUG_MSD | |
001faf32 BS |
24 | #define DPRINTF(fmt, ...) \ |
25 | do { printf("usb-msd: " fmt , ## __VA_ARGS__); } while (0) | |
2e5d83bb | 26 | #else |
001faf32 | 27 | #define DPRINTF(fmt, ...) do {} while(0) |
2e5d83bb PB |
28 | #endif |
29 | ||
30 | /* USB requests. */ | |
31 | #define MassStorageReset 0xff | |
32 | #define GetMaxLun 0xfe | |
33 | ||
34 | enum USBMSDMode { | |
35 | USB_MSDM_CBW, /* Command Block. */ | |
36 | USB_MSDM_DATAOUT, /* Tranfer data to device. */ | |
37 | USB_MSDM_DATAIN, /* Transfer data from device. */ | |
38 | USB_MSDM_CSW /* Command Status. */ | |
39 | }; | |
40 | ||
41 | typedef struct { | |
42 | USBDevice dev; | |
43 | enum USBMSDMode mode; | |
a917d384 PB |
44 | uint32_t scsi_len; |
45 | uint8_t *scsi_buf; | |
46 | uint32_t usb_len; | |
47 | uint8_t *usb_buf; | |
2e5d83bb | 48 | uint32_t data_len; |
a917d384 | 49 | uint32_t residue; |
2e5d83bb | 50 | uint32_t tag; |
ca9c39fa | 51 | SCSIBus bus; |
428c149b | 52 | BlockConf conf; |
2e5d83bb PB |
53 | SCSIDevice *scsi_dev; |
54 | int result; | |
4d611c9a PB |
55 | /* For async completion. */ |
56 | USBPacket *packet; | |
2e5d83bb PB |
57 | } MSDState; |
58 | ||
a917d384 PB |
59 | struct usb_msd_cbw { |
60 | uint32_t sig; | |
61 | uint32_t tag; | |
62 | uint32_t data_len; | |
63 | uint8_t flags; | |
64 | uint8_t lun; | |
65 | uint8_t cmd_len; | |
66 | uint8_t cmd[16]; | |
67 | }; | |
68 | ||
69 | struct usb_msd_csw { | |
70 | uint32_t sig; | |
71 | uint32_t tag; | |
72 | uint32_t residue; | |
73 | uint8_t status; | |
74 | }; | |
75 | ||
81bfd2f2 GH |
76 | enum { |
77 | STR_MANUFACTURER = 1, | |
78 | STR_PRODUCT, | |
79 | STR_SERIALNUMBER, | |
2e5d83bb PB |
80 | }; |
81 | ||
81bfd2f2 GH |
82 | static const USBDescStrings desc_strings = { |
83 | [STR_MANUFACTURER] = "QEMU " QEMU_VERSION, | |
84 | [STR_PRODUCT] = "QEMU USB HARDDRIVE", | |
85 | [STR_SERIALNUMBER] = "1", | |
86 | }; | |
87 | ||
88 | static const USBDescIface desc_iface0 = { | |
89 | .bInterfaceNumber = 0, | |
90 | .bNumEndpoints = 2, | |
91 | .bInterfaceClass = USB_CLASS_MASS_STORAGE, | |
92 | .bInterfaceSubClass = 0x06, /* SCSI */ | |
93 | .bInterfaceProtocol = 0x50, /* Bulk */ | |
94 | .eps = (USBDescEndpoint[]) { | |
95 | { | |
96 | .bEndpointAddress = USB_DIR_IN | 0x01, | |
97 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
98 | .wMaxPacketSize = 64, | |
99 | },{ | |
100 | .bEndpointAddress = USB_DIR_OUT | 0x02, | |
101 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
102 | .wMaxPacketSize = 64, | |
103 | }, | |
104 | } | |
105 | }; | |
106 | ||
107 | static const USBDescDevice desc_device = { | |
108 | .bcdUSB = 0x0100, | |
109 | .bMaxPacketSize0 = 8, | |
110 | .bNumConfigurations = 1, | |
111 | .confs = (USBDescConfig[]) { | |
112 | { | |
113 | .bNumInterfaces = 1, | |
114 | .bConfigurationValue = 1, | |
115 | .bmAttributes = 0xc0, | |
116 | .ifs = &desc_iface0, | |
117 | }, | |
118 | }, | |
119 | }; | |
120 | ||
121 | static const USBDesc desc = { | |
122 | .id = { | |
123 | .idVendor = 0, | |
124 | .idProduct = 0, | |
125 | .bcdDevice = 0, | |
126 | .iManufacturer = STR_MANUFACTURER, | |
127 | .iProduct = STR_PRODUCT, | |
128 | .iSerialNumber = STR_SERIALNUMBER, | |
129 | }, | |
130 | .full = &desc_device, | |
131 | .str = desc_strings, | |
2e5d83bb PB |
132 | }; |
133 | ||
a917d384 PB |
134 | static void usb_msd_copy_data(MSDState *s) |
135 | { | |
136 | uint32_t len; | |
137 | len = s->usb_len; | |
138 | if (len > s->scsi_len) | |
139 | len = s->scsi_len; | |
140 | if (s->mode == USB_MSDM_DATAIN) { | |
141 | memcpy(s->usb_buf, s->scsi_buf, len); | |
142 | } else { | |
143 | memcpy(s->scsi_buf, s->usb_buf, len); | |
144 | } | |
145 | s->usb_len -= len; | |
146 | s->scsi_len -= len; | |
147 | s->usb_buf += len; | |
148 | s->scsi_buf += len; | |
149 | s->data_len -= len; | |
150 | if (s->scsi_len == 0) { | |
151 | if (s->mode == USB_MSDM_DATAIN) { | |
d52affa7 | 152 | s->scsi_dev->info->read_data(s->scsi_dev, s->tag); |
a917d384 | 153 | } else if (s->mode == USB_MSDM_DATAOUT) { |
d52affa7 | 154 | s->scsi_dev->info->write_data(s->scsi_dev, s->tag); |
a917d384 PB |
155 | } |
156 | } | |
157 | } | |
158 | ||
159 | static void usb_msd_send_status(MSDState *s) | |
160 | { | |
161 | struct usb_msd_csw csw; | |
162 | ||
163 | csw.sig = cpu_to_le32(0x53425355); | |
164 | csw.tag = cpu_to_le32(s->tag); | |
165 | csw.residue = s->residue; | |
166 | csw.status = s->result; | |
167 | memcpy(s->usb_buf, &csw, 13); | |
168 | } | |
169 | ||
d52affa7 | 170 | static void usb_msd_command_complete(SCSIBus *bus, int reason, uint32_t tag, |
a917d384 | 171 | uint32_t arg) |
2e5d83bb | 172 | { |
d52affa7 | 173 | MSDState *s = DO_UPCAST(MSDState, dev.qdev, bus->qbus.parent); |
a917d384 | 174 | USBPacket *p = s->packet; |
4d611c9a | 175 | |
a917d384 PB |
176 | if (tag != s->tag) { |
177 | fprintf(stderr, "usb-msd: Unexpected SCSI Tag 0x%x\n", tag); | |
178 | } | |
4d611c9a | 179 | if (reason == SCSI_REASON_DONE) { |
a917d384 PB |
180 | DPRINTF("Command complete %d\n", arg); |
181 | s->residue = s->data_len; | |
182 | s->result = arg != 0; | |
183 | if (s->packet) { | |
184 | if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { | |
185 | /* A deferred packet with no write data remaining must be | |
186 | the status read packet. */ | |
187 | usb_msd_send_status(s); | |
188 | s->mode = USB_MSDM_CBW; | |
189 | } else { | |
190 | if (s->data_len) { | |
191 | s->data_len -= s->usb_len; | |
192 | if (s->mode == USB_MSDM_DATAIN) | |
193 | memset(s->usb_buf, 0, s->usb_len); | |
194 | s->usb_len = 0; | |
195 | } | |
196 | if (s->data_len == 0) | |
197 | s->mode = USB_MSDM_CSW; | |
198 | } | |
199 | s->packet = NULL; | |
200 | usb_packet_complete(p); | |
201 | } else if (s->data_len == 0) { | |
202 | s->mode = USB_MSDM_CSW; | |
203 | } | |
204 | return; | |
4d611c9a | 205 | } |
a917d384 | 206 | s->scsi_len = arg; |
d52affa7 | 207 | s->scsi_buf = s->scsi_dev->info->get_buf(s->scsi_dev, tag); |
a917d384 PB |
208 | if (p) { |
209 | usb_msd_copy_data(s); | |
210 | if (s->usb_len == 0) { | |
211 | /* Set s->packet to NULL before calling usb_packet_complete | |
212 | because annother request may be issued before | |
213 | usb_packet_complete returns. */ | |
214 | DPRINTF("Packet complete %p\n", p); | |
215 | s->packet = NULL; | |
216 | usb_packet_complete(p); | |
217 | } | |
4d611c9a | 218 | } |
2e5d83bb PB |
219 | } |
220 | ||
059809e4 | 221 | static void usb_msd_handle_reset(USBDevice *dev) |
2e5d83bb PB |
222 | { |
223 | MSDState *s = (MSDState *)dev; | |
224 | ||
225 | DPRINTF("Reset\n"); | |
226 | s->mode = USB_MSDM_CBW; | |
2e5d83bb PB |
227 | } |
228 | ||
229 | static int usb_msd_handle_control(USBDevice *dev, int request, int value, | |
230 | int index, int length, uint8_t *data) | |
231 | { | |
232 | MSDState *s = (MSDState *)dev; | |
81bfd2f2 | 233 | int ret; |
2e5d83bb | 234 | |
81bfd2f2 GH |
235 | ret = usb_desc_handle_control(dev, request, value, index, length, data); |
236 | if (ret >= 0) { | |
237 | return ret; | |
238 | } | |
239 | ||
240 | ret = 0; | |
2e5d83bb PB |
241 | switch (request) { |
242 | case DeviceRequest | USB_REQ_GET_STATUS: | |
243 | data[0] = (1 << USB_DEVICE_SELF_POWERED) | | |
244 | (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); | |
245 | data[1] = 0x00; | |
246 | ret = 2; | |
247 | break; | |
248 | case DeviceOutRequest | USB_REQ_CLEAR_FEATURE: | |
249 | if (value == USB_DEVICE_REMOTE_WAKEUP) { | |
250 | dev->remote_wakeup = 0; | |
251 | } else { | |
252 | goto fail; | |
253 | } | |
254 | ret = 0; | |
255 | break; | |
256 | case DeviceOutRequest | USB_REQ_SET_FEATURE: | |
257 | if (value == USB_DEVICE_REMOTE_WAKEUP) { | |
258 | dev->remote_wakeup = 1; | |
259 | } else { | |
260 | goto fail; | |
261 | } | |
262 | ret = 0; | |
263 | break; | |
2e5d83bb PB |
264 | case DeviceRequest | USB_REQ_GET_CONFIGURATION: |
265 | data[0] = 1; | |
266 | ret = 1; | |
267 | break; | |
268 | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: | |
269 | ret = 0; | |
270 | break; | |
271 | case DeviceRequest | USB_REQ_GET_INTERFACE: | |
272 | data[0] = 0; | |
273 | ret = 1; | |
274 | break; | |
275 | case DeviceOutRequest | USB_REQ_SET_INTERFACE: | |
276 | ret = 0; | |
277 | break; | |
278 | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: | |
e5322f76 APR |
279 | ret = 0; |
280 | break; | |
281 | case InterfaceOutRequest | USB_REQ_SET_INTERFACE: | |
2e5d83bb PB |
282 | ret = 0; |
283 | break; | |
284 | /* Class specific requests. */ | |
f3571b1a | 285 | case ClassInterfaceOutRequest | MassStorageReset: |
2e5d83bb PB |
286 | /* Reset state ready for the next CBW. */ |
287 | s->mode = USB_MSDM_CBW; | |
288 | ret = 0; | |
289 | break; | |
f3571b1a | 290 | case ClassInterfaceRequest | GetMaxLun: |
2e5d83bb PB |
291 | data[0] = 0; |
292 | ret = 1; | |
293 | break; | |
294 | default: | |
295 | fail: | |
296 | ret = USB_RET_STALL; | |
297 | break; | |
298 | } | |
299 | return ret; | |
300 | } | |
301 | ||
4d611c9a PB |
302 | static void usb_msd_cancel_io(USBPacket *p, void *opaque) |
303 | { | |
304 | MSDState *s = opaque; | |
d52affa7 | 305 | s->scsi_dev->info->cancel_io(s->scsi_dev, s->tag); |
4d611c9a | 306 | s->packet = NULL; |
a917d384 | 307 | s->scsi_len = 0; |
4d611c9a PB |
308 | } |
309 | ||
310 | static int usb_msd_handle_data(USBDevice *dev, USBPacket *p) | |
2e5d83bb PB |
311 | { |
312 | MSDState *s = (MSDState *)dev; | |
313 | int ret = 0; | |
314 | struct usb_msd_cbw cbw; | |
4d611c9a PB |
315 | uint8_t devep = p->devep; |
316 | uint8_t *data = p->data; | |
317 | int len = p->len; | |
2e5d83bb | 318 | |
4d611c9a | 319 | switch (p->pid) { |
2e5d83bb PB |
320 | case USB_TOKEN_OUT: |
321 | if (devep != 2) | |
322 | goto fail; | |
323 | ||
324 | switch (s->mode) { | |
325 | case USB_MSDM_CBW: | |
326 | if (len != 31) { | |
327 | fprintf(stderr, "usb-msd: Bad CBW size"); | |
328 | goto fail; | |
329 | } | |
330 | memcpy(&cbw, data, 31); | |
331 | if (le32_to_cpu(cbw.sig) != 0x43425355) { | |
332 | fprintf(stderr, "usb-msd: Bad signature %08x\n", | |
333 | le32_to_cpu(cbw.sig)); | |
334 | goto fail; | |
335 | } | |
336 | DPRINTF("Command on LUN %d\n", cbw.lun); | |
337 | if (cbw.lun != 0) { | |
338 | fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun); | |
339 | goto fail; | |
340 | } | |
341 | s->tag = le32_to_cpu(cbw.tag); | |
342 | s->data_len = le32_to_cpu(cbw.data_len); | |
343 | if (s->data_len == 0) { | |
344 | s->mode = USB_MSDM_CSW; | |
345 | } else if (cbw.flags & 0x80) { | |
346 | s->mode = USB_MSDM_DATAIN; | |
347 | } else { | |
348 | s->mode = USB_MSDM_DATAOUT; | |
349 | } | |
350 | DPRINTF("Command tag 0x%x flags %08x len %d data %d\n", | |
351 | s->tag, cbw.flags, cbw.cmd_len, s->data_len); | |
a917d384 | 352 | s->residue = 0; |
d52affa7 | 353 | s->scsi_dev->info->send_command(s->scsi_dev, s->tag, cbw.cmd, 0); |
a917d384 PB |
354 | /* ??? Should check that USB and SCSI data transfer |
355 | directions match. */ | |
356 | if (s->residue == 0) { | |
357 | if (s->mode == USB_MSDM_DATAIN) { | |
d52affa7 | 358 | s->scsi_dev->info->read_data(s->scsi_dev, s->tag); |
a917d384 | 359 | } else if (s->mode == USB_MSDM_DATAOUT) { |
d52affa7 | 360 | s->scsi_dev->info->write_data(s->scsi_dev, s->tag); |
a917d384 PB |
361 | } |
362 | } | |
2e5d83bb PB |
363 | ret = len; |
364 | break; | |
365 | ||
366 | case USB_MSDM_DATAOUT: | |
367 | DPRINTF("Data out %d/%d\n", len, s->data_len); | |
368 | if (len > s->data_len) | |
369 | goto fail; | |
370 | ||
a917d384 PB |
371 | s->usb_buf = data; |
372 | s->usb_len = len; | |
373 | if (s->scsi_len) { | |
374 | usb_msd_copy_data(s); | |
375 | } | |
376 | if (s->residue && s->usb_len) { | |
377 | s->data_len -= s->usb_len; | |
378 | if (s->data_len == 0) | |
379 | s->mode = USB_MSDM_CSW; | |
380 | s->usb_len = 0; | |
381 | } | |
382 | if (s->usb_len) { | |
4d611c9a PB |
383 | DPRINTF("Deferring packet %p\n", p); |
384 | usb_defer_packet(p, usb_msd_cancel_io, s); | |
385 | s->packet = p; | |
386 | ret = USB_RET_ASYNC; | |
a917d384 PB |
387 | } else { |
388 | ret = len; | |
4d611c9a | 389 | } |
2e5d83bb PB |
390 | break; |
391 | ||
392 | default: | |
393 | DPRINTF("Unexpected write (len %d)\n", len); | |
394 | goto fail; | |
395 | } | |
396 | break; | |
397 | ||
398 | case USB_TOKEN_IN: | |
399 | if (devep != 1) | |
400 | goto fail; | |
401 | ||
402 | switch (s->mode) { | |
a917d384 PB |
403 | case USB_MSDM_DATAOUT: |
404 | if (s->data_len != 0 || len < 13) | |
405 | goto fail; | |
406 | /* Waiting for SCSI write to complete. */ | |
407 | usb_defer_packet(p, usb_msd_cancel_io, s); | |
408 | s->packet = p; | |
409 | ret = USB_RET_ASYNC; | |
410 | break; | |
411 | ||
2e5d83bb PB |
412 | case USB_MSDM_CSW: |
413 | DPRINTF("Command status %d tag 0x%x, len %d\n", | |
414 | s->result, s->tag, len); | |
415 | if (len < 13) | |
416 | goto fail; | |
417 | ||
a917d384 PB |
418 | s->usb_len = len; |
419 | s->usb_buf = data; | |
420 | usb_msd_send_status(s); | |
2e5d83bb | 421 | s->mode = USB_MSDM_CBW; |
a917d384 | 422 | ret = 13; |
2e5d83bb PB |
423 | break; |
424 | ||
425 | case USB_MSDM_DATAIN: | |
426 | DPRINTF("Data in %d/%d\n", len, s->data_len); | |
427 | if (len > s->data_len) | |
428 | len = s->data_len; | |
a917d384 PB |
429 | s->usb_buf = data; |
430 | s->usb_len = len; | |
431 | if (s->scsi_len) { | |
432 | usb_msd_copy_data(s); | |
433 | } | |
434 | if (s->residue && s->usb_len) { | |
435 | s->data_len -= s->usb_len; | |
436 | memset(s->usb_buf, 0, s->usb_len); | |
437 | if (s->data_len == 0) | |
438 | s->mode = USB_MSDM_CSW; | |
439 | s->usb_len = 0; | |
440 | } | |
441 | if (s->usb_len) { | |
4d611c9a PB |
442 | DPRINTF("Deferring packet %p\n", p); |
443 | usb_defer_packet(p, usb_msd_cancel_io, s); | |
444 | s->packet = p; | |
445 | ret = USB_RET_ASYNC; | |
a917d384 PB |
446 | } else { |
447 | ret = len; | |
4d611c9a | 448 | } |
2e5d83bb PB |
449 | break; |
450 | ||
451 | default: | |
452 | DPRINTF("Unexpected read (len %d)\n", len); | |
453 | goto fail; | |
454 | } | |
455 | break; | |
456 | ||
457 | default: | |
458 | DPRINTF("Bad token\n"); | |
459 | fail: | |
460 | ret = USB_RET_STALL; | |
461 | break; | |
462 | } | |
463 | ||
464 | return ret; | |
465 | } | |
466 | ||
b3e461d3 GH |
467 | static void usb_msd_password_cb(void *opaque, int err) |
468 | { | |
469 | MSDState *s = opaque; | |
470 | ||
471 | if (!err) | |
472 | usb_device_attach(&s->dev); | |
473 | else | |
474 | qdev_unplug(&s->dev.qdev); | |
475 | } | |
476 | ||
806b6024 GH |
477 | static int usb_msd_initfn(USBDevice *dev) |
478 | { | |
479 | MSDState *s = DO_UPCAST(MSDState, dev, dev); | |
f8b6cc00 | 480 | BlockDriverState *bs = s->conf.bs; |
4a1e1bc4 | 481 | DriveInfo *dinfo; |
806b6024 | 482 | |
f8b6cc00 | 483 | if (!bs) { |
1ecda02b | 484 | error_report("usb-msd: drive property not set"); |
7fc2f2c0 GH |
485 | return -1; |
486 | } | |
487 | ||
14bafc54 MA |
488 | /* |
489 | * Hack alert: this pretends to be a block device, but it's really | |
490 | * a SCSI bus that can serve only a single device, which it | |
18846dee MA |
491 | * creates automatically. But first it needs to detach from its |
492 | * blockdev, or else scsi_bus_legacy_add_drive() dies when it | |
493 | * attaches again. | |
14bafc54 MA |
494 | * |
495 | * The hack is probably a bad idea. | |
496 | */ | |
18846dee | 497 | bdrv_detach(bs, &s->dev.qdev); |
f8b6cc00 | 498 | s->conf.bs = NULL; |
14bafc54 | 499 | |
4a1e1bc4 GH |
500 | dinfo = drive_get_by_blockdev(bs); |
501 | if (dinfo && dinfo->serial) { | |
502 | usb_desc_set_string(dev, STR_SERIALNUMBER, dinfo->serial); | |
503 | } | |
504 | ||
806b6024 | 505 | s->dev.speed = USB_SPEED_FULL; |
ca9c39fa | 506 | scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, usb_msd_command_complete); |
f8b6cc00 | 507 | s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0); |
fa66b909 MA |
508 | if (!s->scsi_dev) { |
509 | return -1; | |
510 | } | |
cb23117b | 511 | s->bus.qbus.allow_hotplug = 0; |
7fc2f2c0 | 512 | usb_msd_handle_reset(dev); |
b3e461d3 | 513 | |
f8b6cc00 | 514 | if (bdrv_key_required(bs)) { |
a4426488 | 515 | if (cur_mon) { |
f8b6cc00 | 516 | monitor_read_bdrv_key_start(cur_mon, bs, usb_msd_password_cb, s); |
b3e461d3 GH |
517 | s->dev.auto_attach = 0; |
518 | } else { | |
519 | autostart = 0; | |
520 | } | |
521 | } | |
522 | ||
806b6024 GH |
523 | return 0; |
524 | } | |
525 | ||
b3e461d3 | 526 | static USBDevice *usb_msd_init(const char *filename) |
2e5d83bb | 527 | { |
7fc2f2c0 GH |
528 | static int nr=0; |
529 | char id[8]; | |
530 | QemuOpts *opts; | |
531 | DriveInfo *dinfo; | |
806b6024 | 532 | USBDevice *dev; |
7fc2f2c0 | 533 | int fatal_error; |
334c0241 AJ |
534 | const char *p1; |
535 | char fmt[32]; | |
536 | ||
7fc2f2c0 GH |
537 | /* parse -usbdevice disk: syntax into drive opts */ |
538 | snprintf(id, sizeof(id), "usb%d", nr++); | |
3329f07b | 539 | opts = qemu_opts_create(qemu_find_opts("drive"), id, 0); |
7fc2f2c0 | 540 | |
334c0241 AJ |
541 | p1 = strchr(filename, ':'); |
542 | if (p1++) { | |
543 | const char *p2; | |
544 | ||
545 | if (strstart(filename, "format=", &p2)) { | |
546 | int len = MIN(p1 - p2, sizeof(fmt)); | |
547 | pstrcpy(fmt, len, p2); | |
7fc2f2c0 | 548 | qemu_opt_set(opts, "format", fmt); |
334c0241 AJ |
549 | } else if (*filename != ':') { |
550 | printf("unrecognized USB mass-storage option %s\n", filename); | |
551 | return NULL; | |
552 | } | |
334c0241 AJ |
553 | filename = p1; |
554 | } | |
334c0241 AJ |
555 | if (!*filename) { |
556 | printf("block device specification needed\n"); | |
557 | return NULL; | |
558 | } | |
7fc2f2c0 GH |
559 | qemu_opt_set(opts, "file", filename); |
560 | qemu_opt_set(opts, "if", "none"); | |
2e5d83bb | 561 | |
7fc2f2c0 | 562 | /* create host drive */ |
a803cb8e | 563 | dinfo = drive_init(opts, 0, &fatal_error); |
7fc2f2c0 GH |
564 | if (!dinfo) { |
565 | qemu_opts_del(opts); | |
806b6024 | 566 | return NULL; |
7fc2f2c0 | 567 | } |
2e5d83bb | 568 | |
7fc2f2c0 | 569 | /* create guest device */ |
556cd098 | 570 | dev = usb_create(NULL /* FIXME */, "usb-storage"); |
d44168ff PB |
571 | if (!dev) { |
572 | return NULL; | |
573 | } | |
18846dee MA |
574 | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
575 | qdev_free(&dev->qdev); | |
576 | return NULL; | |
577 | } | |
33e66b86 MA |
578 | if (qdev_init(&dev->qdev) < 0) |
579 | return NULL; | |
1f6e24e7 | 580 | |
7fc2f2c0 | 581 | return dev; |
2e5d83bb | 582 | } |
bb5fc20f | 583 | |
806b6024 | 584 | static struct USBDeviceInfo msd_info = { |
06384698 | 585 | .product_desc = "QEMU USB MSD", |
556cd098 | 586 | .qdev.name = "usb-storage", |
806b6024 | 587 | .qdev.size = sizeof(MSDState), |
81bfd2f2 | 588 | .usb_desc = &desc, |
806b6024 GH |
589 | .init = usb_msd_initfn, |
590 | .handle_packet = usb_generic_handle_packet, | |
591 | .handle_reset = usb_msd_handle_reset, | |
592 | .handle_control = usb_msd_handle_control, | |
593 | .handle_data = usb_msd_handle_data, | |
b3e461d3 GH |
594 | .usbdevice_name = "disk", |
595 | .usbdevice_init = usb_msd_init, | |
7fc2f2c0 | 596 | .qdev.props = (Property[]) { |
428c149b | 597 | DEFINE_BLOCK_PROPERTIES(MSDState, conf), |
7fc2f2c0 GH |
598 | DEFINE_PROP_END_OF_LIST(), |
599 | }, | |
806b6024 GH |
600 | }; |
601 | ||
602 | static void usb_msd_register_devices(void) | |
603 | { | |
604 | usb_qdev_register(&msd_info); | |
605 | } | |
606 | device_init(usb_msd_register_devices) |