1 | /* |
2 | * USB Mass Storage Device emulation |
3 | * |
4 | * Copyright (c) 2006 CodeSourcery. |
5 | * Written by Paul Brook |
6 | * |
7 | * This code is licensed under the LGPL. |
8 | */ |
9 | |
10 | #include "qemu/osdep.h" |
11 | #include "qapi/error.h" |
12 | #include "qemu/error-report.h" |
13 | #include "qemu/module.h" |
14 | #include "qemu/option.h" |
15 | #include "qemu/config-file.h" |
16 | #include "hw/usb.h" |
17 | #include "desc.h" |
18 | #include "hw/qdev-properties.h" |
19 | #include "hw/scsi/scsi.h" |
20 | #include "ui/console.h" |
21 | #include "migration/vmstate.h" |
22 | #include "monitor/monitor.h" |
23 | #include "sysemu/sysemu.h" |
24 | #include "sysemu/block-backend.h" |
25 | #include "qapi/visitor.h" |
26 | #include "qemu/cutils.h" |
27 | |
28 | //#define DEBUG_MSD |
29 | |
30 | #ifdef DEBUG_MSD |
31 | #define DPRINTF(fmt, ...) \ |
32 | do { printf("usb-msd: " fmt , ## __VA_ARGS__); } while (0) |
33 | #else |
34 | #define DPRINTF(fmt, ...) do {} while(0) |
35 | #endif |
36 | |
37 | /* USB requests. */ |
38 | #define MassStorageReset 0xff |
39 | #define GetMaxLun 0xfe |
40 | |
41 | enum USBMSDMode { |
42 | USB_MSDM_CBW, /* Command Block. */ |
43 | USB_MSDM_DATAOUT, /* Transfer data to device. */ |
44 | USB_MSDM_DATAIN, /* Transfer data from device. */ |
45 | USB_MSDM_CSW /* Command Status. */ |
46 | }; |
47 | |
48 | struct usb_msd_csw { |
49 | uint32_t sig; |
50 | uint32_t tag; |
51 | uint32_t residue; |
52 | uint8_t status; |
53 | }; |
54 | |
55 | typedef struct { |
56 | USBDevice dev; |
57 | enum USBMSDMode mode; |
58 | uint32_t scsi_off; |
59 | uint32_t scsi_len; |
60 | uint32_t data_len; |
61 | struct usb_msd_csw csw; |
62 | SCSIRequest *req; |
63 | SCSIBus bus; |
64 | /* For async completion. */ |
65 | USBPacket *packet; |
66 | /* usb-storage only */ |
67 | BlockConf conf; |
68 | uint32_t removable; |
69 | SCSIDevice *scsi_dev; |
70 | } MSDState; |
71 | |
72 | #define TYPE_USB_STORAGE "usb-storage-dev" |
73 | #define USB_STORAGE_DEV(obj) OBJECT_CHECK(MSDState, (obj), TYPE_USB_STORAGE) |
74 | |
75 | struct usb_msd_cbw { |
76 | uint32_t sig; |
77 | uint32_t tag; |
78 | uint32_t data_len; |
79 | uint8_t flags; |
80 | uint8_t lun; |
81 | uint8_t cmd_len; |
82 | uint8_t cmd[16]; |
83 | }; |
84 | |
85 | enum { |
86 | STR_MANUFACTURER = 1, |
87 | STR_PRODUCT, |
88 | STR_SERIALNUMBER, |
89 | STR_CONFIG_FULL, |
90 | STR_CONFIG_HIGH, |
91 | STR_CONFIG_SUPER, |
92 | }; |
93 | |
94 | static const USBDescStrings desc_strings = { |
95 | [STR_MANUFACTURER] = "QEMU" , |
96 | [STR_PRODUCT] = "QEMU USB HARDDRIVE" , |
97 | [STR_SERIALNUMBER] = "1" , |
98 | [STR_CONFIG_FULL] = "Full speed config (usb 1.1)" , |
99 | [STR_CONFIG_HIGH] = "High speed config (usb 2.0)" , |
100 | [STR_CONFIG_SUPER] = "Super speed config (usb 3.0)" , |
101 | }; |
102 | |
103 | static const USBDescIface desc_iface_full = { |
104 | .bInterfaceNumber = 0, |
105 | .bNumEndpoints = 2, |
106 | .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
107 | .bInterfaceSubClass = 0x06, /* SCSI */ |
108 | .bInterfaceProtocol = 0x50, /* Bulk */ |
109 | .eps = (USBDescEndpoint[]) { |
110 | { |
111 | .bEndpointAddress = USB_DIR_IN | 0x01, |
112 | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
113 | .wMaxPacketSize = 64, |
114 | },{ |
115 | .bEndpointAddress = USB_DIR_OUT | 0x02, |
116 | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
117 | .wMaxPacketSize = 64, |
118 | }, |
119 | } |
120 | }; |
121 | |
122 | static const USBDescDevice desc_device_full = { |
123 | .bcdUSB = 0x0200, |
124 | .bMaxPacketSize0 = 8, |
125 | .bNumConfigurations = 1, |
126 | .confs = (USBDescConfig[]) { |
127 | { |
128 | .bNumInterfaces = 1, |
129 | .bConfigurationValue = 1, |
130 | .iConfiguration = STR_CONFIG_FULL, |
131 | .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, |
132 | .nif = 1, |
133 | .ifs = &desc_iface_full, |
134 | }, |
135 | }, |
136 | }; |
137 | |
138 | static const USBDescIface desc_iface_high = { |
139 | .bInterfaceNumber = 0, |
140 | .bNumEndpoints = 2, |
141 | .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
142 | .bInterfaceSubClass = 0x06, /* SCSI */ |
143 | .bInterfaceProtocol = 0x50, /* Bulk */ |
144 | .eps = (USBDescEndpoint[]) { |
145 | { |
146 | .bEndpointAddress = USB_DIR_IN | 0x01, |
147 | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
148 | .wMaxPacketSize = 512, |
149 | },{ |
150 | .bEndpointAddress = USB_DIR_OUT | 0x02, |
151 | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
152 | .wMaxPacketSize = 512, |
153 | }, |
154 | } |
155 | }; |
156 | |
157 | static const USBDescDevice desc_device_high = { |
158 | .bcdUSB = 0x0200, |
159 | .bMaxPacketSize0 = 64, |
160 | .bNumConfigurations = 1, |
161 | .confs = (USBDescConfig[]) { |
162 | { |
163 | .bNumInterfaces = 1, |
164 | .bConfigurationValue = 1, |
165 | .iConfiguration = STR_CONFIG_HIGH, |
166 | .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, |
167 | .nif = 1, |
168 | .ifs = &desc_iface_high, |
169 | }, |
170 | }, |
171 | }; |
172 | |
173 | static const USBDescIface desc_iface_super = { |
174 | .bInterfaceNumber = 0, |
175 | .bNumEndpoints = 2, |
176 | .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
177 | .bInterfaceSubClass = 0x06, /* SCSI */ |
178 | .bInterfaceProtocol = 0x50, /* Bulk */ |
179 | .eps = (USBDescEndpoint[]) { |
180 | { |
181 | .bEndpointAddress = USB_DIR_IN | 0x01, |
182 | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
183 | .wMaxPacketSize = 1024, |
184 | .bMaxBurst = 15, |
185 | },{ |
186 | .bEndpointAddress = USB_DIR_OUT | 0x02, |
187 | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
188 | .wMaxPacketSize = 1024, |
189 | .bMaxBurst = 15, |
190 | }, |
191 | } |
192 | }; |
193 | |
194 | static const USBDescDevice desc_device_super = { |
195 | .bcdUSB = 0x0300, |
196 | .bMaxPacketSize0 = 9, |
197 | .bNumConfigurations = 1, |
198 | .confs = (USBDescConfig[]) { |
199 | { |
200 | .bNumInterfaces = 1, |
201 | .bConfigurationValue = 1, |
202 | .iConfiguration = STR_CONFIG_SUPER, |
203 | .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, |
204 | .nif = 1, |
205 | .ifs = &desc_iface_super, |
206 | }, |
207 | }, |
208 | }; |
209 | |
210 | static const USBDesc desc = { |
211 | .id = { |
212 | .idVendor = 0x46f4, /* CRC16() of "QEMU" */ |
213 | .idProduct = 0x0001, |
214 | .bcdDevice = 0, |
215 | .iManufacturer = STR_MANUFACTURER, |
216 | .iProduct = STR_PRODUCT, |
217 | .iSerialNumber = STR_SERIALNUMBER, |
218 | }, |
219 | .full = &desc_device_full, |
220 | .high = &desc_device_high, |
221 | .super = &desc_device_super, |
222 | .str = desc_strings, |
223 | }; |
224 | |
225 | static void usb_msd_copy_data(MSDState *s, USBPacket *p) |
226 | { |
227 | uint32_t len; |
228 | len = p->iov.size - p->actual_length; |
229 | if (len > s->scsi_len) |
230 | len = s->scsi_len; |
231 | usb_packet_copy(p, scsi_req_get_buf(s->req) + s->scsi_off, len); |
232 | s->scsi_len -= len; |
233 | s->scsi_off += len; |
234 | s->data_len -= len; |
235 | if (s->scsi_len == 0 || s->data_len == 0) { |
236 | scsi_req_continue(s->req); |
237 | } |
238 | } |
239 | |
240 | static void usb_msd_send_status(MSDState *s, USBPacket *p) |
241 | { |
242 | int len; |
243 | |
244 | DPRINTF("Command status %d tag 0x%x, len %zd\n" , |
245 | s->csw.status, le32_to_cpu(s->csw.tag), p->iov.size); |
246 | |
247 | assert(s->csw.sig == cpu_to_le32(0x53425355)); |
248 | len = MIN(sizeof(s->csw), p->iov.size); |
249 | usb_packet_copy(p, &s->csw, len); |
250 | memset(&s->csw, 0, sizeof(s->csw)); |
251 | } |
252 | |
253 | static void usb_msd_packet_complete(MSDState *s) |
254 | { |
255 | USBPacket *p = s->packet; |
256 | |
257 | /* Set s->packet to NULL before calling usb_packet_complete |
258 | because another request may be issued before |
259 | usb_packet_complete returns. */ |
260 | DPRINTF("Packet complete %p\n" , p); |
261 | s->packet = NULL; |
262 | usb_packet_complete(&s->dev, p); |
263 | } |
264 | |
265 | static void usb_msd_transfer_data(SCSIRequest *req, uint32_t len) |
266 | { |
267 | MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
268 | USBPacket *p = s->packet; |
269 | |
270 | assert((s->mode == USB_MSDM_DATAOUT) == (req->cmd.mode == SCSI_XFER_TO_DEV)); |
271 | s->scsi_len = len; |
272 | s->scsi_off = 0; |
273 | if (p) { |
274 | usb_msd_copy_data(s, p); |
275 | p = s->packet; |
276 | if (p && p->actual_length == p->iov.size) { |
277 | p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */ |
278 | usb_msd_packet_complete(s); |
279 | } |
280 | } |
281 | } |
282 | |
283 | static void usb_msd_command_complete(SCSIRequest *req, uint32_t status, size_t resid) |
284 | { |
285 | MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
286 | USBPacket *p = s->packet; |
287 | |
288 | DPRINTF("Command complete %d tag 0x%x\n" , status, req->tag); |
289 | |
290 | s->csw.sig = cpu_to_le32(0x53425355); |
291 | s->csw.tag = cpu_to_le32(req->tag); |
292 | s->csw.residue = cpu_to_le32(s->data_len); |
293 | s->csw.status = status != 0; |
294 | |
295 | if (s->packet) { |
296 | if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { |
297 | /* A deferred packet with no write data remaining must be |
298 | the status read packet. */ |
299 | usb_msd_send_status(s, p); |
300 | s->mode = USB_MSDM_CBW; |
301 | } else if (s->mode == USB_MSDM_CSW) { |
302 | usb_msd_send_status(s, p); |
303 | s->mode = USB_MSDM_CBW; |
304 | } else { |
305 | if (s->data_len) { |
306 | int len = (p->iov.size - p->actual_length); |
307 | usb_packet_skip(p, len); |
308 | s->data_len -= len; |
309 | } |
310 | if (s->data_len == 0) { |
311 | s->mode = USB_MSDM_CSW; |
312 | } |
313 | } |
314 | p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */ |
315 | usb_msd_packet_complete(s); |
316 | } else if (s->data_len == 0) { |
317 | s->mode = USB_MSDM_CSW; |
318 | } |
319 | scsi_req_unref(req); |
320 | s->req = NULL; |
321 | } |
322 | |
323 | static void usb_msd_request_cancelled(SCSIRequest *req) |
324 | { |
325 | MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
326 | |
327 | if (req == s->req) { |
328 | scsi_req_unref(s->req); |
329 | s->req = NULL; |
330 | s->scsi_len = 0; |
331 | } |
332 | } |
333 | |
334 | static void usb_msd_handle_reset(USBDevice *dev) |
335 | { |
336 | MSDState *s = (MSDState *)dev; |
337 | |
338 | DPRINTF("Reset\n" ); |
339 | if (s->req) { |
340 | scsi_req_cancel(s->req); |
341 | } |
342 | assert(s->req == NULL); |
343 | |
344 | if (s->packet) { |
345 | s->packet->status = USB_RET_STALL; |
346 | usb_msd_packet_complete(s); |
347 | } |
348 | |
349 | s->mode = USB_MSDM_CBW; |
350 | } |
351 | |
352 | static void usb_msd_handle_control(USBDevice *dev, USBPacket *p, |
353 | int request, int value, int index, int length, uint8_t *data) |
354 | { |
355 | MSDState *s = (MSDState *)dev; |
356 | SCSIDevice *scsi_dev; |
357 | int ret, maxlun; |
358 | |
359 | ret = usb_desc_handle_control(dev, p, request, value, index, length, data); |
360 | if (ret >= 0) { |
361 | return; |
362 | } |
363 | |
364 | switch (request) { |
365 | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: |
366 | break; |
367 | /* Class specific requests. */ |
368 | case ClassInterfaceOutRequest | MassStorageReset: |
369 | /* Reset state ready for the next CBW. */ |
370 | s->mode = USB_MSDM_CBW; |
371 | break; |
372 | case ClassInterfaceRequest | GetMaxLun: |
373 | maxlun = 0; |
374 | for (;;) { |
375 | scsi_dev = scsi_device_find(&s->bus, 0, 0, maxlun+1); |
376 | if (scsi_dev == NULL) { |
377 | break; |
378 | } |
379 | if (scsi_dev->lun != maxlun+1) { |
380 | break; |
381 | } |
382 | maxlun++; |
383 | } |
384 | DPRINTF("MaxLun %d\n" , maxlun); |
385 | data[0] = maxlun; |
386 | p->actual_length = 1; |
387 | break; |
388 | default: |
389 | p->status = USB_RET_STALL; |
390 | break; |
391 | } |
392 | } |
393 | |
394 | static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p) |
395 | { |
396 | MSDState *s = USB_STORAGE_DEV(dev); |
397 | |
398 | assert(s->packet == p); |
399 | s->packet = NULL; |
400 | |
401 | if (s->req) { |
402 | scsi_req_cancel(s->req); |
403 | } |
404 | } |
405 | |
406 | static void usb_msd_handle_data(USBDevice *dev, USBPacket *p) |
407 | { |
408 | MSDState *s = (MSDState *)dev; |
409 | uint32_t tag; |
410 | struct usb_msd_cbw cbw; |
411 | uint8_t devep = p->ep->nr; |
412 | SCSIDevice *scsi_dev; |
413 | uint32_t len; |
414 | |
415 | switch (p->pid) { |
416 | case USB_TOKEN_OUT: |
417 | if (devep != 2) |
418 | goto fail; |
419 | |
420 | switch (s->mode) { |
421 | case USB_MSDM_CBW: |
422 | if (p->iov.size != 31) { |
423 | error_report("usb-msd: Bad CBW size" ); |
424 | goto fail; |
425 | } |
426 | usb_packet_copy(p, &cbw, 31); |
427 | if (le32_to_cpu(cbw.sig) != 0x43425355) { |
428 | error_report("usb-msd: Bad signature %08x" , |
429 | le32_to_cpu(cbw.sig)); |
430 | goto fail; |
431 | } |
432 | DPRINTF("Command on LUN %d\n" , cbw.lun); |
433 | scsi_dev = scsi_device_find(&s->bus, 0, 0, cbw.lun); |
434 | if (scsi_dev == NULL) { |
435 | error_report("usb-msd: Bad LUN %d" , cbw.lun); |
436 | goto fail; |
437 | } |
438 | tag = le32_to_cpu(cbw.tag); |
439 | s->data_len = le32_to_cpu(cbw.data_len); |
440 | if (s->data_len == 0) { |
441 | s->mode = USB_MSDM_CSW; |
442 | } else if (cbw.flags & 0x80) { |
443 | s->mode = USB_MSDM_DATAIN; |
444 | } else { |
445 | s->mode = USB_MSDM_DATAOUT; |
446 | } |
447 | DPRINTF("Command tag 0x%x flags %08x len %d data %d\n" , |
448 | tag, cbw.flags, cbw.cmd_len, s->data_len); |
449 | assert(le32_to_cpu(s->csw.residue) == 0); |
450 | s->scsi_len = 0; |
451 | s->req = scsi_req_new(scsi_dev, tag, cbw.lun, cbw.cmd, NULL); |
452 | #ifdef DEBUG_MSD |
453 | scsi_req_print(s->req); |
454 | #endif |
455 | len = scsi_req_enqueue(s->req); |
456 | if (len) { |
457 | scsi_req_continue(s->req); |
458 | } |
459 | break; |
460 | |
461 | case USB_MSDM_DATAOUT: |
462 | DPRINTF("Data out %zd/%d\n" , p->iov.size, s->data_len); |
463 | if (p->iov.size > s->data_len) { |
464 | goto fail; |
465 | } |
466 | |
467 | if (s->scsi_len) { |
468 | usb_msd_copy_data(s, p); |
469 | } |
470 | if (le32_to_cpu(s->csw.residue)) { |
471 | int len = p->iov.size - p->actual_length; |
472 | if (len) { |
473 | usb_packet_skip(p, len); |
474 | s->data_len -= len; |
475 | if (s->data_len == 0) { |
476 | s->mode = USB_MSDM_CSW; |
477 | } |
478 | } |
479 | } |
480 | if (p->actual_length < p->iov.size) { |
481 | DPRINTF("Deferring packet %p [wait data-out]\n" , p); |
482 | s->packet = p; |
483 | p->status = USB_RET_ASYNC; |
484 | } |
485 | break; |
486 | |
487 | default: |
488 | DPRINTF("Unexpected write (len %zd)\n" , p->iov.size); |
489 | goto fail; |
490 | } |
491 | break; |
492 | |
493 | case USB_TOKEN_IN: |
494 | if (devep != 1) |
495 | goto fail; |
496 | |
497 | switch (s->mode) { |
498 | case USB_MSDM_DATAOUT: |
499 | if (s->data_len != 0 || p->iov.size < 13) { |
500 | goto fail; |
501 | } |
502 | /* Waiting for SCSI write to complete. */ |
503 | s->packet = p; |
504 | p->status = USB_RET_ASYNC; |
505 | break; |
506 | |
507 | case USB_MSDM_CSW: |
508 | if (p->iov.size < 13) { |
509 | goto fail; |
510 | } |
511 | |
512 | if (s->req) { |
513 | /* still in flight */ |
514 | DPRINTF("Deferring packet %p [wait status]\n" , p); |
515 | s->packet = p; |
516 | p->status = USB_RET_ASYNC; |
517 | } else { |
518 | usb_msd_send_status(s, p); |
519 | s->mode = USB_MSDM_CBW; |
520 | } |
521 | break; |
522 | |
523 | case USB_MSDM_DATAIN: |
524 | DPRINTF("Data in %zd/%d, scsi_len %d\n" , |
525 | p->iov.size, s->data_len, s->scsi_len); |
526 | if (s->scsi_len) { |
527 | usb_msd_copy_data(s, p); |
528 | } |
529 | if (le32_to_cpu(s->csw.residue)) { |
530 | int len = p->iov.size - p->actual_length; |
531 | if (len) { |
532 | usb_packet_skip(p, len); |
533 | s->data_len -= len; |
534 | if (s->data_len == 0) { |
535 | s->mode = USB_MSDM_CSW; |
536 | } |
537 | } |
538 | } |
539 | if (p->actual_length < p->iov.size) { |
540 | DPRINTF("Deferring packet %p [wait data-in]\n" , p); |
541 | s->packet = p; |
542 | p->status = USB_RET_ASYNC; |
543 | } |
544 | break; |
545 | |
546 | default: |
547 | DPRINTF("Unexpected read (len %zd)\n" , p->iov.size); |
548 | goto fail; |
549 | } |
550 | break; |
551 | |
552 | default: |
553 | DPRINTF("Bad token\n" ); |
554 | fail: |
555 | p->status = USB_RET_STALL; |
556 | break; |
557 | } |
558 | } |
559 | |
560 | static void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req) |
561 | { |
562 | MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
563 | |
564 | /* nothing to load, just store req in our state struct */ |
565 | assert(s->req == NULL); |
566 | scsi_req_ref(req); |
567 | s->req = req; |
568 | return NULL; |
569 | } |
570 | |
571 | static const struct SCSIBusInfo usb_msd_scsi_info_storage = { |
572 | .tcq = false, |
573 | .max_target = 0, |
574 | .max_lun = 0, |
575 | |
576 | .transfer_data = usb_msd_transfer_data, |
577 | .complete = usb_msd_command_complete, |
578 | .cancel = usb_msd_request_cancelled, |
579 | .load_request = usb_msd_load_request, |
580 | }; |
581 | |
582 | static const struct SCSIBusInfo usb_msd_scsi_info_bot = { |
583 | .tcq = false, |
584 | .max_target = 0, |
585 | .max_lun = 15, |
586 | |
587 | .transfer_data = usb_msd_transfer_data, |
588 | .complete = usb_msd_command_complete, |
589 | .cancel = usb_msd_request_cancelled, |
590 | .load_request = usb_msd_load_request, |
591 | }; |
592 | |
593 | static void usb_msd_storage_realize(USBDevice *dev, Error **errp) |
594 | { |
595 | MSDState *s = USB_STORAGE_DEV(dev); |
596 | BlockBackend *blk = s->conf.blk; |
597 | SCSIDevice *scsi_dev; |
598 | |
599 | if (!blk) { |
600 | error_setg(errp, "drive property not set" ); |
601 | return; |
602 | } |
603 | |
604 | blkconf_blocksizes(&s->conf); |
605 | if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(blk), true, |
606 | errp)) { |
607 | return; |
608 | } |
609 | |
610 | /* |
611 | * Hack alert: this pretends to be a block device, but it's really |
612 | * a SCSI bus that can serve only a single device, which it |
613 | * creates automatically. But first it needs to detach from its |
614 | * blockdev, or else scsi_bus_legacy_add_drive() dies when it |
615 | * attaches again. We also need to take another reference so that |
616 | * blk_detach_dev() doesn't free blk while we still need it. |
617 | * |
618 | * The hack is probably a bad idea. |
619 | */ |
620 | blk_ref(blk); |
621 | blk_detach_dev(blk, DEVICE(s)); |
622 | s->conf.blk = NULL; |
623 | |
624 | usb_desc_create_serial(dev); |
625 | usb_desc_init(dev); |
626 | scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), |
627 | &usb_msd_scsi_info_storage, NULL); |
628 | scsi_dev = scsi_bus_legacy_add_drive(&s->bus, blk, 0, !!s->removable, |
629 | s->conf.bootindex, s->conf.share_rw, |
630 | s->conf.rerror, s->conf.werror, |
631 | dev->serial, |
632 | errp); |
633 | blk_unref(blk); |
634 | if (!scsi_dev) { |
635 | return; |
636 | } |
637 | usb_msd_handle_reset(dev); |
638 | s->scsi_dev = scsi_dev; |
639 | } |
640 | |
641 | static void usb_msd_bot_realize(USBDevice *dev, Error **errp) |
642 | { |
643 | MSDState *s = USB_STORAGE_DEV(dev); |
644 | DeviceState *d = DEVICE(dev); |
645 | |
646 | usb_desc_create_serial(dev); |
647 | usb_desc_init(dev); |
648 | if (d->hotplugged) { |
649 | s->dev.auto_attach = 0; |
650 | } |
651 | |
652 | scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), |
653 | &usb_msd_scsi_info_bot, NULL); |
654 | usb_msd_handle_reset(dev); |
655 | } |
656 | |
657 | static const VMStateDescription vmstate_usb_msd = { |
658 | .name = "usb-storage" , |
659 | .version_id = 1, |
660 | .minimum_version_id = 1, |
661 | .fields = (VMStateField[]) { |
662 | VMSTATE_USB_DEVICE(dev, MSDState), |
663 | VMSTATE_UINT32(mode, MSDState), |
664 | VMSTATE_UINT32(scsi_len, MSDState), |
665 | VMSTATE_UINT32(scsi_off, MSDState), |
666 | VMSTATE_UINT32(data_len, MSDState), |
667 | VMSTATE_UINT32(csw.sig, MSDState), |
668 | VMSTATE_UINT32(csw.tag, MSDState), |
669 | VMSTATE_UINT32(csw.residue, MSDState), |
670 | VMSTATE_UINT8(csw.status, MSDState), |
671 | VMSTATE_END_OF_LIST() |
672 | } |
673 | }; |
674 | |
675 | static Property msd_properties[] = { |
676 | DEFINE_BLOCK_PROPERTIES(MSDState, conf), |
677 | DEFINE_BLOCK_ERROR_PROPERTIES(MSDState, conf), |
678 | DEFINE_PROP_BIT("removable" , MSDState, removable, 0, false), |
679 | DEFINE_PROP_END_OF_LIST(), |
680 | }; |
681 | |
682 | static void usb_msd_class_initfn_common(ObjectClass *klass, void *data) |
683 | { |
684 | DeviceClass *dc = DEVICE_CLASS(klass); |
685 | USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
686 | |
687 | uc->product_desc = "QEMU USB MSD" ; |
688 | uc->usb_desc = &desc; |
689 | uc->cancel_packet = usb_msd_cancel_io; |
690 | uc->handle_attach = usb_desc_attach; |
691 | uc->handle_reset = usb_msd_handle_reset; |
692 | uc->handle_control = usb_msd_handle_control; |
693 | uc->handle_data = usb_msd_handle_data; |
694 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
695 | dc->fw_name = "storage" ; |
696 | dc->vmsd = &vmstate_usb_msd; |
697 | } |
698 | |
699 | static void usb_msd_class_storage_initfn(ObjectClass *klass, void *data) |
700 | { |
701 | DeviceClass *dc = DEVICE_CLASS(klass); |
702 | USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
703 | |
704 | uc->realize = usb_msd_storage_realize; |
705 | dc->props = msd_properties; |
706 | } |
707 | |
708 | static void usb_msd_get_bootindex(Object *obj, Visitor *v, const char *name, |
709 | void *opaque, Error **errp) |
710 | { |
711 | USBDevice *dev = USB_DEVICE(obj); |
712 | MSDState *s = USB_STORAGE_DEV(dev); |
713 | |
714 | visit_type_int32(v, name, &s->conf.bootindex, errp); |
715 | } |
716 | |
717 | static void usb_msd_set_bootindex(Object *obj, Visitor *v, const char *name, |
718 | void *opaque, Error **errp) |
719 | { |
720 | USBDevice *dev = USB_DEVICE(obj); |
721 | MSDState *s = USB_STORAGE_DEV(dev); |
722 | int32_t boot_index; |
723 | Error *local_err = NULL; |
724 | |
725 | visit_type_int32(v, name, &boot_index, &local_err); |
726 | if (local_err) { |
727 | goto out; |
728 | } |
729 | /* check whether bootindex is present in fw_boot_order list */ |
730 | check_boot_index(boot_index, &local_err); |
731 | if (local_err) { |
732 | goto out; |
733 | } |
734 | /* change bootindex to a new one */ |
735 | s->conf.bootindex = boot_index; |
736 | |
737 | if (s->scsi_dev) { |
738 | object_property_set_int(OBJECT(s->scsi_dev), boot_index, "bootindex" , |
739 | &error_abort); |
740 | } |
741 | |
742 | out: |
743 | error_propagate(errp, local_err); |
744 | } |
745 | |
746 | static const TypeInfo usb_storage_dev_type_info = { |
747 | .name = TYPE_USB_STORAGE, |
748 | .parent = TYPE_USB_DEVICE, |
749 | .instance_size = sizeof(MSDState), |
750 | .abstract = true, |
751 | .class_init = usb_msd_class_initfn_common, |
752 | }; |
753 | |
754 | static void usb_msd_instance_init(Object *obj) |
755 | { |
756 | object_property_add(obj, "bootindex" , "int32" , |
757 | usb_msd_get_bootindex, |
758 | usb_msd_set_bootindex, NULL, NULL, NULL); |
759 | object_property_set_int(obj, -1, "bootindex" , NULL); |
760 | } |
761 | |
762 | static void usb_msd_class_bot_initfn(ObjectClass *klass, void *data) |
763 | { |
764 | USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
765 | |
766 | uc->realize = usb_msd_bot_realize; |
767 | uc->attached_settable = true; |
768 | } |
769 | |
770 | static const TypeInfo msd_info = { |
771 | .name = "usb-storage" , |
772 | .parent = TYPE_USB_STORAGE, |
773 | .class_init = usb_msd_class_storage_initfn, |
774 | .instance_init = usb_msd_instance_init, |
775 | }; |
776 | |
777 | static const TypeInfo bot_info = { |
778 | .name = "usb-bot" , |
779 | .parent = TYPE_USB_STORAGE, |
780 | .class_init = usb_msd_class_bot_initfn, |
781 | }; |
782 | |
783 | static void usb_msd_register_types(void) |
784 | { |
785 | type_register_static(&usb_storage_dev_type_info); |
786 | type_register_static(&msd_info); |
787 | type_register_static(&bot_info); |
788 | } |
789 | |
790 | type_init(usb_msd_register_types) |
791 | |