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Commit | Line | Data |
---|---|---|
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" |
43b443b6 | 14 | #include "scsi.h" |
c0f4ce77 | 15 | #include "console.h" |
b3e461d3 | 16 | #include "monitor.h" |
666daa68 | 17 | #include "sysemu.h" |
2446333c | 18 | #include "blockdev.h" |
2e5d83bb PB |
19 | |
20 | //#define DEBUG_MSD | |
21 | ||
22 | #ifdef DEBUG_MSD | |
001faf32 BS |
23 | #define DPRINTF(fmt, ...) \ |
24 | do { printf("usb-msd: " fmt , ## __VA_ARGS__); } while (0) | |
2e5d83bb | 25 | #else |
001faf32 | 26 | #define DPRINTF(fmt, ...) do {} while(0) |
2e5d83bb PB |
27 | #endif |
28 | ||
29 | /* USB requests. */ | |
30 | #define MassStorageReset 0xff | |
31 | #define GetMaxLun 0xfe | |
32 | ||
33 | enum USBMSDMode { | |
34 | USB_MSDM_CBW, /* Command Block. */ | |
35 | USB_MSDM_DATAOUT, /* Tranfer data to device. */ | |
36 | USB_MSDM_DATAIN, /* Transfer data from device. */ | |
37 | USB_MSDM_CSW /* Command Status. */ | |
38 | }; | |
39 | ||
40 | typedef struct { | |
41 | USBDevice dev; | |
42 | enum USBMSDMode mode; | |
a917d384 PB |
43 | uint32_t scsi_len; |
44 | uint8_t *scsi_buf; | |
45 | uint32_t usb_len; | |
46 | uint8_t *usb_buf; | |
2e5d83bb | 47 | uint32_t data_len; |
a917d384 | 48 | uint32_t residue; |
2e5d83bb | 49 | uint32_t tag; |
ca9c39fa | 50 | SCSIBus bus; |
428c149b | 51 | BlockConf conf; |
2e5d83bb PB |
52 | SCSIDevice *scsi_dev; |
53 | int result; | |
4d611c9a PB |
54 | /* For async completion. */ |
55 | USBPacket *packet; | |
2e5d83bb PB |
56 | } MSDState; |
57 | ||
a917d384 PB |
58 | struct usb_msd_cbw { |
59 | uint32_t sig; | |
60 | uint32_t tag; | |
61 | uint32_t data_len; | |
62 | uint8_t flags; | |
63 | uint8_t lun; | |
64 | uint8_t cmd_len; | |
65 | uint8_t cmd[16]; | |
66 | }; | |
67 | ||
68 | struct usb_msd_csw { | |
69 | uint32_t sig; | |
70 | uint32_t tag; | |
71 | uint32_t residue; | |
72 | uint8_t status; | |
73 | }; | |
74 | ||
2e5d83bb PB |
75 | static const uint8_t qemu_msd_dev_descriptor[] = { |
76 | 0x12, /* u8 bLength; */ | |
77 | 0x01, /* u8 bDescriptorType; Device */ | |
e126cf13 | 78 | 0x00, 0x01, /* u16 bcdUSB; v1.0 */ |
2e5d83bb PB |
79 | |
80 | 0x00, /* u8 bDeviceClass; */ | |
81 | 0x00, /* u8 bDeviceSubClass; */ | |
82 | 0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ | |
83 | 0x08, /* u8 bMaxPacketSize0; 8 Bytes */ | |
84 | ||
85 | /* Vendor and product id are arbitrary. */ | |
86 | 0x00, 0x00, /* u16 idVendor; */ | |
87 | 0x00, 0x00, /* u16 idProduct; */ | |
88 | 0x00, 0x00, /* u16 bcdDevice */ | |
89 | ||
90 | 0x01, /* u8 iManufacturer; */ | |
91 | 0x02, /* u8 iProduct; */ | |
92 | 0x03, /* u8 iSerialNumber; */ | |
93 | 0x01 /* u8 bNumConfigurations; */ | |
94 | }; | |
95 | ||
96 | static const uint8_t qemu_msd_config_descriptor[] = { | |
97 | ||
98 | /* one configuration */ | |
99 | 0x09, /* u8 bLength; */ | |
100 | 0x02, /* u8 bDescriptorType; Configuration */ | |
101 | 0x20, 0x00, /* u16 wTotalLength; */ | |
102 | 0x01, /* u8 bNumInterfaces; (1) */ | |
103 | 0x01, /* u8 bConfigurationValue; */ | |
104 | 0x00, /* u8 iConfiguration; */ | |
5fafdf24 | 105 | 0xc0, /* u8 bmAttributes; |
2e5d83bb PB |
106 | Bit 7: must be set, |
107 | 6: Self-powered, | |
108 | 5: Remote wakeup, | |
109 | 4..0: resvd */ | |
110 | 0x00, /* u8 MaxPower; */ | |
3b46e624 | 111 | |
2e5d83bb PB |
112 | /* one interface */ |
113 | 0x09, /* u8 if_bLength; */ | |
114 | 0x04, /* u8 if_bDescriptorType; Interface */ | |
115 | 0x00, /* u8 if_bInterfaceNumber; */ | |
116 | 0x00, /* u8 if_bAlternateSetting; */ | |
117 | 0x02, /* u8 if_bNumEndpoints; */ | |
118 | 0x08, /* u8 if_bInterfaceClass; MASS STORAGE */ | |
119 | 0x06, /* u8 if_bInterfaceSubClass; SCSI */ | |
120 | 0x50, /* u8 if_bInterfaceProtocol; Bulk Only */ | |
121 | 0x00, /* u8 if_iInterface; */ | |
3b46e624 | 122 | |
2e5d83bb PB |
123 | /* Bulk-In endpoint */ |
124 | 0x07, /* u8 ep_bLength; */ | |
125 | 0x05, /* u8 ep_bDescriptorType; Endpoint */ | |
126 | 0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ | |
127 | 0x02, /* u8 ep_bmAttributes; Bulk */ | |
128 | 0x40, 0x00, /* u16 ep_wMaxPacketSize; */ | |
129 | 0x00, /* u8 ep_bInterval; */ | |
130 | ||
131 | /* Bulk-Out endpoint */ | |
132 | 0x07, /* u8 ep_bLength; */ | |
133 | 0x05, /* u8 ep_bDescriptorType; Endpoint */ | |
134 | 0x02, /* u8 ep_bEndpointAddress; OUT Endpoint 2 */ | |
135 | 0x02, /* u8 ep_bmAttributes; Bulk */ | |
136 | 0x40, 0x00, /* u16 ep_wMaxPacketSize; */ | |
137 | 0x00 /* u8 ep_bInterval; */ | |
138 | }; | |
139 | ||
a917d384 PB |
140 | static void usb_msd_copy_data(MSDState *s) |
141 | { | |
142 | uint32_t len; | |
143 | len = s->usb_len; | |
144 | if (len > s->scsi_len) | |
145 | len = s->scsi_len; | |
146 | if (s->mode == USB_MSDM_DATAIN) { | |
147 | memcpy(s->usb_buf, s->scsi_buf, len); | |
148 | } else { | |
149 | memcpy(s->scsi_buf, s->usb_buf, len); | |
150 | } | |
151 | s->usb_len -= len; | |
152 | s->scsi_len -= len; | |
153 | s->usb_buf += len; | |
154 | s->scsi_buf += len; | |
155 | s->data_len -= len; | |
156 | if (s->scsi_len == 0) { | |
157 | if (s->mode == USB_MSDM_DATAIN) { | |
d52affa7 | 158 | s->scsi_dev->info->read_data(s->scsi_dev, s->tag); |
a917d384 | 159 | } else if (s->mode == USB_MSDM_DATAOUT) { |
d52affa7 | 160 | s->scsi_dev->info->write_data(s->scsi_dev, s->tag); |
a917d384 PB |
161 | } |
162 | } | |
163 | } | |
164 | ||
165 | static void usb_msd_send_status(MSDState *s) | |
166 | { | |
167 | struct usb_msd_csw csw; | |
168 | ||
169 | csw.sig = cpu_to_le32(0x53425355); | |
170 | csw.tag = cpu_to_le32(s->tag); | |
171 | csw.residue = s->residue; | |
172 | csw.status = s->result; | |
173 | memcpy(s->usb_buf, &csw, 13); | |
174 | } | |
175 | ||
d52affa7 | 176 | static void usb_msd_command_complete(SCSIBus *bus, int reason, uint32_t tag, |
a917d384 | 177 | uint32_t arg) |
2e5d83bb | 178 | { |
d52affa7 | 179 | MSDState *s = DO_UPCAST(MSDState, dev.qdev, bus->qbus.parent); |
a917d384 | 180 | USBPacket *p = s->packet; |
4d611c9a | 181 | |
a917d384 PB |
182 | if (tag != s->tag) { |
183 | fprintf(stderr, "usb-msd: Unexpected SCSI Tag 0x%x\n", tag); | |
184 | } | |
4d611c9a | 185 | if (reason == SCSI_REASON_DONE) { |
a917d384 PB |
186 | DPRINTF("Command complete %d\n", arg); |
187 | s->residue = s->data_len; | |
188 | s->result = arg != 0; | |
189 | if (s->packet) { | |
190 | if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { | |
191 | /* A deferred packet with no write data remaining must be | |
192 | the status read packet. */ | |
193 | usb_msd_send_status(s); | |
194 | s->mode = USB_MSDM_CBW; | |
195 | } else { | |
196 | if (s->data_len) { | |
197 | s->data_len -= s->usb_len; | |
198 | if (s->mode == USB_MSDM_DATAIN) | |
199 | memset(s->usb_buf, 0, s->usb_len); | |
200 | s->usb_len = 0; | |
201 | } | |
202 | if (s->data_len == 0) | |
203 | s->mode = USB_MSDM_CSW; | |
204 | } | |
205 | s->packet = NULL; | |
206 | usb_packet_complete(p); | |
207 | } else if (s->data_len == 0) { | |
208 | s->mode = USB_MSDM_CSW; | |
209 | } | |
210 | return; | |
4d611c9a | 211 | } |
a917d384 | 212 | s->scsi_len = arg; |
d52affa7 | 213 | s->scsi_buf = s->scsi_dev->info->get_buf(s->scsi_dev, tag); |
a917d384 PB |
214 | if (p) { |
215 | usb_msd_copy_data(s); | |
216 | if (s->usb_len == 0) { | |
217 | /* Set s->packet to NULL before calling usb_packet_complete | |
218 | because annother request may be issued before | |
219 | usb_packet_complete returns. */ | |
220 | DPRINTF("Packet complete %p\n", p); | |
221 | s->packet = NULL; | |
222 | usb_packet_complete(p); | |
223 | } | |
4d611c9a | 224 | } |
2e5d83bb PB |
225 | } |
226 | ||
059809e4 | 227 | static void usb_msd_handle_reset(USBDevice *dev) |
2e5d83bb PB |
228 | { |
229 | MSDState *s = (MSDState *)dev; | |
230 | ||
231 | DPRINTF("Reset\n"); | |
232 | s->mode = USB_MSDM_CBW; | |
2e5d83bb PB |
233 | } |
234 | ||
235 | static int usb_msd_handle_control(USBDevice *dev, int request, int value, | |
236 | int index, int length, uint8_t *data) | |
237 | { | |
238 | MSDState *s = (MSDState *)dev; | |
239 | int ret = 0; | |
240 | ||
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; | |
264 | case DeviceOutRequest | USB_REQ_SET_ADDRESS: | |
265 | dev->addr = value; | |
266 | ret = 0; | |
267 | break; | |
268 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: | |
269 | switch(value >> 8) { | |
270 | case USB_DT_DEVICE: | |
5fafdf24 | 271 | memcpy(data, qemu_msd_dev_descriptor, |
2e5d83bb PB |
272 | sizeof(qemu_msd_dev_descriptor)); |
273 | ret = sizeof(qemu_msd_dev_descriptor); | |
274 | break; | |
275 | case USB_DT_CONFIG: | |
5fafdf24 | 276 | memcpy(data, qemu_msd_config_descriptor, |
2e5d83bb PB |
277 | sizeof(qemu_msd_config_descriptor)); |
278 | ret = sizeof(qemu_msd_config_descriptor); | |
279 | break; | |
280 | case USB_DT_STRING: | |
281 | switch(value & 0xff) { | |
282 | case 0: | |
283 | /* language ids */ | |
284 | data[0] = 4; | |
285 | data[1] = 3; | |
286 | data[2] = 0x09; | |
287 | data[3] = 0x04; | |
288 | ret = 4; | |
289 | break; | |
290 | case 1: | |
291 | /* vendor description */ | |
292 | ret = set_usb_string(data, "QEMU " QEMU_VERSION); | |
293 | break; | |
294 | case 2: | |
295 | /* product description */ | |
296 | ret = set_usb_string(data, "QEMU USB HARDDRIVE"); | |
297 | break; | |
298 | case 3: | |
299 | /* serial number */ | |
300 | ret = set_usb_string(data, "1"); | |
301 | break; | |
302 | default: | |
303 | goto fail; | |
304 | } | |
305 | break; | |
306 | default: | |
307 | goto fail; | |
308 | } | |
309 | break; | |
310 | case DeviceRequest | USB_REQ_GET_CONFIGURATION: | |
311 | data[0] = 1; | |
312 | ret = 1; | |
313 | break; | |
314 | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: | |
315 | ret = 0; | |
316 | break; | |
317 | case DeviceRequest | USB_REQ_GET_INTERFACE: | |
318 | data[0] = 0; | |
319 | ret = 1; | |
320 | break; | |
321 | case DeviceOutRequest | USB_REQ_SET_INTERFACE: | |
322 | ret = 0; | |
323 | break; | |
324 | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: | |
e5322f76 APR |
325 | ret = 0; |
326 | break; | |
327 | case InterfaceOutRequest | USB_REQ_SET_INTERFACE: | |
2e5d83bb PB |
328 | ret = 0; |
329 | break; | |
330 | /* Class specific requests. */ | |
f3571b1a | 331 | case ClassInterfaceOutRequest | MassStorageReset: |
2e5d83bb PB |
332 | /* Reset state ready for the next CBW. */ |
333 | s->mode = USB_MSDM_CBW; | |
334 | ret = 0; | |
335 | break; | |
f3571b1a | 336 | case ClassInterfaceRequest | GetMaxLun: |
2e5d83bb PB |
337 | data[0] = 0; |
338 | ret = 1; | |
339 | break; | |
340 | default: | |
341 | fail: | |
342 | ret = USB_RET_STALL; | |
343 | break; | |
344 | } | |
345 | return ret; | |
346 | } | |
347 | ||
4d611c9a PB |
348 | static void usb_msd_cancel_io(USBPacket *p, void *opaque) |
349 | { | |
350 | MSDState *s = opaque; | |
d52affa7 | 351 | s->scsi_dev->info->cancel_io(s->scsi_dev, s->tag); |
4d611c9a | 352 | s->packet = NULL; |
a917d384 | 353 | s->scsi_len = 0; |
4d611c9a PB |
354 | } |
355 | ||
356 | static int usb_msd_handle_data(USBDevice *dev, USBPacket *p) | |
2e5d83bb PB |
357 | { |
358 | MSDState *s = (MSDState *)dev; | |
359 | int ret = 0; | |
360 | struct usb_msd_cbw cbw; | |
4d611c9a PB |
361 | uint8_t devep = p->devep; |
362 | uint8_t *data = p->data; | |
363 | int len = p->len; | |
2e5d83bb | 364 | |
4d611c9a | 365 | switch (p->pid) { |
2e5d83bb PB |
366 | case USB_TOKEN_OUT: |
367 | if (devep != 2) | |
368 | goto fail; | |
369 | ||
370 | switch (s->mode) { | |
371 | case USB_MSDM_CBW: | |
372 | if (len != 31) { | |
373 | fprintf(stderr, "usb-msd: Bad CBW size"); | |
374 | goto fail; | |
375 | } | |
376 | memcpy(&cbw, data, 31); | |
377 | if (le32_to_cpu(cbw.sig) != 0x43425355) { | |
378 | fprintf(stderr, "usb-msd: Bad signature %08x\n", | |
379 | le32_to_cpu(cbw.sig)); | |
380 | goto fail; | |
381 | } | |
382 | DPRINTF("Command on LUN %d\n", cbw.lun); | |
383 | if (cbw.lun != 0) { | |
384 | fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun); | |
385 | goto fail; | |
386 | } | |
387 | s->tag = le32_to_cpu(cbw.tag); | |
388 | s->data_len = le32_to_cpu(cbw.data_len); | |
389 | if (s->data_len == 0) { | |
390 | s->mode = USB_MSDM_CSW; | |
391 | } else if (cbw.flags & 0x80) { | |
392 | s->mode = USB_MSDM_DATAIN; | |
393 | } else { | |
394 | s->mode = USB_MSDM_DATAOUT; | |
395 | } | |
396 | DPRINTF("Command tag 0x%x flags %08x len %d data %d\n", | |
397 | s->tag, cbw.flags, cbw.cmd_len, s->data_len); | |
a917d384 | 398 | s->residue = 0; |
d52affa7 | 399 | s->scsi_dev->info->send_command(s->scsi_dev, s->tag, cbw.cmd, 0); |
a917d384 PB |
400 | /* ??? Should check that USB and SCSI data transfer |
401 | directions match. */ | |
402 | if (s->residue == 0) { | |
403 | if (s->mode == USB_MSDM_DATAIN) { | |
d52affa7 | 404 | s->scsi_dev->info->read_data(s->scsi_dev, s->tag); |
a917d384 | 405 | } else if (s->mode == USB_MSDM_DATAOUT) { |
d52affa7 | 406 | s->scsi_dev->info->write_data(s->scsi_dev, s->tag); |
a917d384 PB |
407 | } |
408 | } | |
2e5d83bb PB |
409 | ret = len; |
410 | break; | |
411 | ||
412 | case USB_MSDM_DATAOUT: | |
413 | DPRINTF("Data out %d/%d\n", len, s->data_len); | |
414 | if (len > s->data_len) | |
415 | goto fail; | |
416 | ||
a917d384 PB |
417 | s->usb_buf = data; |
418 | s->usb_len = len; | |
419 | if (s->scsi_len) { | |
420 | usb_msd_copy_data(s); | |
421 | } | |
422 | if (s->residue && s->usb_len) { | |
423 | s->data_len -= s->usb_len; | |
424 | if (s->data_len == 0) | |
425 | s->mode = USB_MSDM_CSW; | |
426 | s->usb_len = 0; | |
427 | } | |
428 | if (s->usb_len) { | |
4d611c9a PB |
429 | DPRINTF("Deferring packet %p\n", p); |
430 | usb_defer_packet(p, usb_msd_cancel_io, s); | |
431 | s->packet = p; | |
432 | ret = USB_RET_ASYNC; | |
a917d384 PB |
433 | } else { |
434 | ret = len; | |
4d611c9a | 435 | } |
2e5d83bb PB |
436 | break; |
437 | ||
438 | default: | |
439 | DPRINTF("Unexpected write (len %d)\n", len); | |
440 | goto fail; | |
441 | } | |
442 | break; | |
443 | ||
444 | case USB_TOKEN_IN: | |
445 | if (devep != 1) | |
446 | goto fail; | |
447 | ||
448 | switch (s->mode) { | |
a917d384 PB |
449 | case USB_MSDM_DATAOUT: |
450 | if (s->data_len != 0 || len < 13) | |
451 | goto fail; | |
452 | /* Waiting for SCSI write to complete. */ | |
453 | usb_defer_packet(p, usb_msd_cancel_io, s); | |
454 | s->packet = p; | |
455 | ret = USB_RET_ASYNC; | |
456 | break; | |
457 | ||
2e5d83bb PB |
458 | case USB_MSDM_CSW: |
459 | DPRINTF("Command status %d tag 0x%x, len %d\n", | |
460 | s->result, s->tag, len); | |
461 | if (len < 13) | |
462 | goto fail; | |
463 | ||
a917d384 PB |
464 | s->usb_len = len; |
465 | s->usb_buf = data; | |
466 | usb_msd_send_status(s); | |
2e5d83bb | 467 | s->mode = USB_MSDM_CBW; |
a917d384 | 468 | ret = 13; |
2e5d83bb PB |
469 | break; |
470 | ||
471 | case USB_MSDM_DATAIN: | |
472 | DPRINTF("Data in %d/%d\n", len, s->data_len); | |
473 | if (len > s->data_len) | |
474 | len = s->data_len; | |
a917d384 PB |
475 | s->usb_buf = data; |
476 | s->usb_len = len; | |
477 | if (s->scsi_len) { | |
478 | usb_msd_copy_data(s); | |
479 | } | |
480 | if (s->residue && s->usb_len) { | |
481 | s->data_len -= s->usb_len; | |
482 | memset(s->usb_buf, 0, s->usb_len); | |
483 | if (s->data_len == 0) | |
484 | s->mode = USB_MSDM_CSW; | |
485 | s->usb_len = 0; | |
486 | } | |
487 | if (s->usb_len) { | |
4d611c9a PB |
488 | DPRINTF("Deferring packet %p\n", p); |
489 | usb_defer_packet(p, usb_msd_cancel_io, s); | |
490 | s->packet = p; | |
491 | ret = USB_RET_ASYNC; | |
a917d384 PB |
492 | } else { |
493 | ret = len; | |
4d611c9a | 494 | } |
2e5d83bb PB |
495 | break; |
496 | ||
497 | default: | |
498 | DPRINTF("Unexpected read (len %d)\n", len); | |
499 | goto fail; | |
500 | } | |
501 | break; | |
502 | ||
503 | default: | |
504 | DPRINTF("Bad token\n"); | |
505 | fail: | |
506 | ret = USB_RET_STALL; | |
507 | break; | |
508 | } | |
509 | ||
510 | return ret; | |
511 | } | |
512 | ||
b3e461d3 GH |
513 | static void usb_msd_password_cb(void *opaque, int err) |
514 | { | |
515 | MSDState *s = opaque; | |
516 | ||
517 | if (!err) | |
518 | usb_device_attach(&s->dev); | |
519 | else | |
520 | qdev_unplug(&s->dev.qdev); | |
521 | } | |
522 | ||
806b6024 GH |
523 | static int usb_msd_initfn(USBDevice *dev) |
524 | { | |
525 | MSDState *s = DO_UPCAST(MSDState, dev, dev); | |
f8b6cc00 | 526 | BlockDriverState *bs = s->conf.bs; |
806b6024 | 527 | |
f8b6cc00 | 528 | if (!bs) { |
1ecda02b | 529 | error_report("usb-msd: drive property not set"); |
7fc2f2c0 GH |
530 | return -1; |
531 | } | |
532 | ||
14bafc54 MA |
533 | /* |
534 | * Hack alert: this pretends to be a block device, but it's really | |
535 | * a SCSI bus that can serve only a single device, which it | |
18846dee MA |
536 | * creates automatically. But first it needs to detach from its |
537 | * blockdev, or else scsi_bus_legacy_add_drive() dies when it | |
538 | * attaches again. | |
14bafc54 MA |
539 | * |
540 | * The hack is probably a bad idea. | |
541 | */ | |
18846dee | 542 | bdrv_detach(bs, &s->dev.qdev); |
f8b6cc00 | 543 | s->conf.bs = NULL; |
14bafc54 | 544 | |
806b6024 | 545 | s->dev.speed = USB_SPEED_FULL; |
ca9c39fa | 546 | scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, usb_msd_command_complete); |
f8b6cc00 | 547 | s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0); |
fa66b909 MA |
548 | if (!s->scsi_dev) { |
549 | return -1; | |
550 | } | |
cb23117b | 551 | s->bus.qbus.allow_hotplug = 0; |
7fc2f2c0 | 552 | usb_msd_handle_reset(dev); |
b3e461d3 | 553 | |
f8b6cc00 | 554 | if (bdrv_key_required(bs)) { |
a4426488 | 555 | if (cur_mon) { |
f8b6cc00 | 556 | monitor_read_bdrv_key_start(cur_mon, bs, usb_msd_password_cb, s); |
b3e461d3 GH |
557 | s->dev.auto_attach = 0; |
558 | } else { | |
559 | autostart = 0; | |
560 | } | |
561 | } | |
562 | ||
806b6024 GH |
563 | return 0; |
564 | } | |
565 | ||
b3e461d3 | 566 | static USBDevice *usb_msd_init(const char *filename) |
2e5d83bb | 567 | { |
7fc2f2c0 GH |
568 | static int nr=0; |
569 | char id[8]; | |
570 | QemuOpts *opts; | |
571 | DriveInfo *dinfo; | |
806b6024 | 572 | USBDevice *dev; |
7fc2f2c0 | 573 | int fatal_error; |
334c0241 AJ |
574 | const char *p1; |
575 | char fmt[32]; | |
576 | ||
7fc2f2c0 GH |
577 | /* parse -usbdevice disk: syntax into drive opts */ |
578 | snprintf(id, sizeof(id), "usb%d", nr++); | |
3329f07b | 579 | opts = qemu_opts_create(qemu_find_opts("drive"), id, 0); |
7fc2f2c0 | 580 | |
334c0241 AJ |
581 | p1 = strchr(filename, ':'); |
582 | if (p1++) { | |
583 | const char *p2; | |
584 | ||
585 | if (strstart(filename, "format=", &p2)) { | |
586 | int len = MIN(p1 - p2, sizeof(fmt)); | |
587 | pstrcpy(fmt, len, p2); | |
7fc2f2c0 | 588 | qemu_opt_set(opts, "format", fmt); |
334c0241 AJ |
589 | } else if (*filename != ':') { |
590 | printf("unrecognized USB mass-storage option %s\n", filename); | |
591 | return NULL; | |
592 | } | |
334c0241 AJ |
593 | filename = p1; |
594 | } | |
334c0241 AJ |
595 | if (!*filename) { |
596 | printf("block device specification needed\n"); | |
597 | return NULL; | |
598 | } | |
7fc2f2c0 GH |
599 | qemu_opt_set(opts, "file", filename); |
600 | qemu_opt_set(opts, "if", "none"); | |
2e5d83bb | 601 | |
7fc2f2c0 | 602 | /* create host drive */ |
a803cb8e | 603 | dinfo = drive_init(opts, 0, &fatal_error); |
7fc2f2c0 GH |
604 | if (!dinfo) { |
605 | qemu_opts_del(opts); | |
806b6024 | 606 | return NULL; |
7fc2f2c0 | 607 | } |
2e5d83bb | 608 | |
7fc2f2c0 | 609 | /* create guest device */ |
556cd098 | 610 | dev = usb_create(NULL /* FIXME */, "usb-storage"); |
d44168ff PB |
611 | if (!dev) { |
612 | return NULL; | |
613 | } | |
18846dee MA |
614 | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
615 | qdev_free(&dev->qdev); | |
616 | return NULL; | |
617 | } | |
33e66b86 MA |
618 | if (qdev_init(&dev->qdev) < 0) |
619 | return NULL; | |
1f6e24e7 | 620 | |
7fc2f2c0 | 621 | return dev; |
2e5d83bb | 622 | } |
bb5fc20f | 623 | |
806b6024 | 624 | static struct USBDeviceInfo msd_info = { |
06384698 | 625 | .product_desc = "QEMU USB MSD", |
556cd098 | 626 | .qdev.name = "usb-storage", |
806b6024 GH |
627 | .qdev.size = sizeof(MSDState), |
628 | .init = usb_msd_initfn, | |
629 | .handle_packet = usb_generic_handle_packet, | |
630 | .handle_reset = usb_msd_handle_reset, | |
631 | .handle_control = usb_msd_handle_control, | |
632 | .handle_data = usb_msd_handle_data, | |
b3e461d3 GH |
633 | .usbdevice_name = "disk", |
634 | .usbdevice_init = usb_msd_init, | |
7fc2f2c0 | 635 | .qdev.props = (Property[]) { |
428c149b | 636 | DEFINE_BLOCK_PROPERTIES(MSDState, conf), |
7fc2f2c0 GH |
637 | DEFINE_PROP_END_OF_LIST(), |
638 | }, | |
806b6024 GH |
639 | }; |
640 | ||
641 | static void usb_msd_register_devices(void) | |
642 | { | |
643 | usb_qdev_register(&msd_info); | |
644 | } | |
645 | device_init(usb_msd_register_devices) |