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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-bionic-kernel.git] / drivers / usb / misc / usbtest.c
1 #include <linux/kernel.h>
2 #include <linux/errno.h>
3 #include <linux/init.h>
4 #include <linux/slab.h>
5 #include <linux/mm.h>
6 #include <linux/module.h>
7 #include <linux/moduleparam.h>
8 #include <linux/scatterlist.h>
9 #include <linux/mutex.h>
10 #include <linux/timer.h>
11 #include <linux/usb.h>
12
13 #define SIMPLE_IO_TIMEOUT 10000 /* in milliseconds */
14
15 /*-------------------------------------------------------------------------*/
16
17 static int override_alt = -1;
18 module_param_named(alt, override_alt, int, 0644);
19 MODULE_PARM_DESC(alt, ">= 0 to override altsetting selection");
20
21 /*-------------------------------------------------------------------------*/
22
23 /* FIXME make these public somewhere; usbdevfs.h? */
24 struct usbtest_param {
25 /* inputs */
26 unsigned test_num; /* 0..(TEST_CASES-1) */
27 unsigned iterations;
28 unsigned length;
29 unsigned vary;
30 unsigned sglen;
31
32 /* outputs */
33 struct timeval duration;
34 };
35 #define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param)
36
37 /*-------------------------------------------------------------------------*/
38
39 #define GENERIC /* let probe() bind using module params */
40
41 /* Some devices that can be used for testing will have "real" drivers.
42 * Entries for those need to be enabled here by hand, after disabling
43 * that "real" driver.
44 */
45 //#define IBOT2 /* grab iBOT2 webcams */
46 //#define KEYSPAN_19Qi /* grab un-renumerated serial adapter */
47
48 /*-------------------------------------------------------------------------*/
49
50 struct usbtest_info {
51 const char *name;
52 u8 ep_in; /* bulk/intr source */
53 u8 ep_out; /* bulk/intr sink */
54 unsigned autoconf:1;
55 unsigned ctrl_out:1;
56 unsigned iso:1; /* try iso in/out */
57 unsigned intr:1; /* try interrupt in/out */
58 int alt;
59 };
60
61 /* this is accessed only through usbfs ioctl calls.
62 * one ioctl to issue a test ... one lock per device.
63 * tests create other threads if they need them.
64 * urbs and buffers are allocated dynamically,
65 * and data generated deterministically.
66 */
67 struct usbtest_dev {
68 struct usb_interface *intf;
69 struct usbtest_info *info;
70 int in_pipe;
71 int out_pipe;
72 int in_iso_pipe;
73 int out_iso_pipe;
74 int in_int_pipe;
75 int out_int_pipe;
76 struct usb_endpoint_descriptor *iso_in, *iso_out;
77 struct usb_endpoint_descriptor *int_in, *int_out;
78 struct mutex lock;
79
80 #define TBUF_SIZE 256
81 u8 *buf;
82 };
83
84 static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test)
85 {
86 return interface_to_usbdev(test->intf);
87 }
88
89 /* set up all urbs so they can be used with either bulk or interrupt */
90 #define INTERRUPT_RATE 1 /* msec/transfer */
91
92 #define ERROR(tdev, fmt, args...) \
93 dev_err(&(tdev)->intf->dev , fmt , ## args)
94 #define WARNING(tdev, fmt, args...) \
95 dev_warn(&(tdev)->intf->dev , fmt , ## args)
96
97 #define GUARD_BYTE 0xA5
98
99 /*-------------------------------------------------------------------------*/
100
101 static int
102 get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf)
103 {
104 int tmp;
105 struct usb_host_interface *alt;
106 struct usb_host_endpoint *in, *out;
107 struct usb_host_endpoint *iso_in, *iso_out;
108 struct usb_host_endpoint *int_in, *int_out;
109 struct usb_device *udev;
110
111 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
112 unsigned ep;
113
114 in = out = NULL;
115 iso_in = iso_out = NULL;
116 int_in = int_out = NULL;
117 alt = intf->altsetting + tmp;
118
119 if (override_alt >= 0 &&
120 override_alt != alt->desc.bAlternateSetting)
121 continue;
122
123 /* take the first altsetting with in-bulk + out-bulk;
124 * ignore other endpoints and altsettings.
125 */
126 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
127 struct usb_host_endpoint *e;
128
129 e = alt->endpoint + ep;
130 switch (usb_endpoint_type(&e->desc)) {
131 case USB_ENDPOINT_XFER_BULK:
132 break;
133 case USB_ENDPOINT_XFER_INT:
134 if (dev->info->intr)
135 goto try_intr;
136 case USB_ENDPOINT_XFER_ISOC:
137 if (dev->info->iso)
138 goto try_iso;
139 /* FALLTHROUGH */
140 default:
141 continue;
142 }
143 if (usb_endpoint_dir_in(&e->desc)) {
144 if (!in)
145 in = e;
146 } else {
147 if (!out)
148 out = e;
149 }
150 continue;
151 try_intr:
152 if (usb_endpoint_dir_in(&e->desc)) {
153 if (!int_in)
154 int_in = e;
155 } else {
156 if (!int_out)
157 int_out = e;
158 }
159 continue;
160 try_iso:
161 if (usb_endpoint_dir_in(&e->desc)) {
162 if (!iso_in)
163 iso_in = e;
164 } else {
165 if (!iso_out)
166 iso_out = e;
167 }
168 }
169 if ((in && out) || iso_in || iso_out || int_in || int_out)
170 goto found;
171 }
172 return -EINVAL;
173
174 found:
175 udev = testdev_to_usbdev(dev);
176 dev->info->alt = alt->desc.bAlternateSetting;
177 if (alt->desc.bAlternateSetting != 0) {
178 tmp = usb_set_interface(udev,
179 alt->desc.bInterfaceNumber,
180 alt->desc.bAlternateSetting);
181 if (tmp < 0)
182 return tmp;
183 }
184
185 if (in) {
186 dev->in_pipe = usb_rcvbulkpipe(udev,
187 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
188 dev->out_pipe = usb_sndbulkpipe(udev,
189 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
190 }
191 if (iso_in) {
192 dev->iso_in = &iso_in->desc;
193 dev->in_iso_pipe = usb_rcvisocpipe(udev,
194 iso_in->desc.bEndpointAddress
195 & USB_ENDPOINT_NUMBER_MASK);
196 }
197
198 if (iso_out) {
199 dev->iso_out = &iso_out->desc;
200 dev->out_iso_pipe = usb_sndisocpipe(udev,
201 iso_out->desc.bEndpointAddress
202 & USB_ENDPOINT_NUMBER_MASK);
203 }
204
205 if (int_in) {
206 dev->int_in = &int_in->desc;
207 dev->in_int_pipe = usb_rcvintpipe(udev,
208 int_in->desc.bEndpointAddress
209 & USB_ENDPOINT_NUMBER_MASK);
210 }
211
212 if (int_out) {
213 dev->int_out = &int_out->desc;
214 dev->out_int_pipe = usb_sndintpipe(udev,
215 int_out->desc.bEndpointAddress
216 & USB_ENDPOINT_NUMBER_MASK);
217 }
218 return 0;
219 }
220
221 /*-------------------------------------------------------------------------*/
222
223 /* Support for testing basic non-queued I/O streams.
224 *
225 * These just package urbs as requests that can be easily canceled.
226 * Each urb's data buffer is dynamically allocated; callers can fill
227 * them with non-zero test data (or test for it) when appropriate.
228 */
229
230 static void simple_callback(struct urb *urb)
231 {
232 complete(urb->context);
233 }
234
235 static struct urb *usbtest_alloc_urb(
236 struct usb_device *udev,
237 int pipe,
238 unsigned long bytes,
239 unsigned transfer_flags,
240 unsigned offset,
241 u8 bInterval)
242 {
243 struct urb *urb;
244
245 urb = usb_alloc_urb(0, GFP_KERNEL);
246 if (!urb)
247 return urb;
248
249 if (bInterval)
250 usb_fill_int_urb(urb, udev, pipe, NULL, bytes, simple_callback,
251 NULL, bInterval);
252 else
253 usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, simple_callback,
254 NULL);
255
256 urb->interval = (udev->speed == USB_SPEED_HIGH)
257 ? (INTERRUPT_RATE << 3)
258 : INTERRUPT_RATE;
259 urb->transfer_flags = transfer_flags;
260 if (usb_pipein(pipe))
261 urb->transfer_flags |= URB_SHORT_NOT_OK;
262
263 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
264 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
265 GFP_KERNEL, &urb->transfer_dma);
266 else
267 urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL);
268
269 if (!urb->transfer_buffer) {
270 usb_free_urb(urb);
271 return NULL;
272 }
273
274 /* To test unaligned transfers add an offset and fill the
275 unused memory with a guard value */
276 if (offset) {
277 memset(urb->transfer_buffer, GUARD_BYTE, offset);
278 urb->transfer_buffer += offset;
279 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
280 urb->transfer_dma += offset;
281 }
282
283 /* For inbound transfers use guard byte so that test fails if
284 data not correctly copied */
285 memset(urb->transfer_buffer,
286 usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
287 bytes);
288 return urb;
289 }
290
291 static struct urb *simple_alloc_urb(
292 struct usb_device *udev,
293 int pipe,
294 unsigned long bytes,
295 u8 bInterval)
296 {
297 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0,
298 bInterval);
299 }
300
301 static unsigned pattern;
302 static unsigned mod_pattern;
303 module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR);
304 MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)");
305
306 static inline void simple_fill_buf(struct urb *urb)
307 {
308 unsigned i;
309 u8 *buf = urb->transfer_buffer;
310 unsigned len = urb->transfer_buffer_length;
311
312 switch (pattern) {
313 default:
314 /* FALLTHROUGH */
315 case 0:
316 memset(buf, 0, len);
317 break;
318 case 1: /* mod63 */
319 for (i = 0; i < len; i++)
320 *buf++ = (u8) (i % 63);
321 break;
322 }
323 }
324
325 static inline unsigned long buffer_offset(void *buf)
326 {
327 return (unsigned long)buf & (ARCH_KMALLOC_MINALIGN - 1);
328 }
329
330 static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb)
331 {
332 u8 *buf = urb->transfer_buffer;
333 u8 *guard = buf - buffer_offset(buf);
334 unsigned i;
335
336 for (i = 0; guard < buf; i++, guard++) {
337 if (*guard != GUARD_BYTE) {
338 ERROR(tdev, "guard byte[%d] %d (not %d)\n",
339 i, *guard, GUARD_BYTE);
340 return -EINVAL;
341 }
342 }
343 return 0;
344 }
345
346 static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb)
347 {
348 unsigned i;
349 u8 expected;
350 u8 *buf = urb->transfer_buffer;
351 unsigned len = urb->actual_length;
352
353 int ret = check_guard_bytes(tdev, urb);
354 if (ret)
355 return ret;
356
357 for (i = 0; i < len; i++, buf++) {
358 switch (pattern) {
359 /* all-zeroes has no synchronization issues */
360 case 0:
361 expected = 0;
362 break;
363 /* mod63 stays in sync with short-terminated transfers,
364 * or otherwise when host and gadget agree on how large
365 * each usb transfer request should be. resync is done
366 * with set_interface or set_config.
367 */
368 case 1: /* mod63 */
369 expected = i % 63;
370 break;
371 /* always fail unsupported patterns */
372 default:
373 expected = !*buf;
374 break;
375 }
376 if (*buf == expected)
377 continue;
378 ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected);
379 return -EINVAL;
380 }
381 return 0;
382 }
383
384 static void simple_free_urb(struct urb *urb)
385 {
386 unsigned long offset = buffer_offset(urb->transfer_buffer);
387
388 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
389 usb_free_coherent(
390 urb->dev,
391 urb->transfer_buffer_length + offset,
392 urb->transfer_buffer - offset,
393 urb->transfer_dma - offset);
394 else
395 kfree(urb->transfer_buffer - offset);
396 usb_free_urb(urb);
397 }
398
399 static int simple_io(
400 struct usbtest_dev *tdev,
401 struct urb *urb,
402 int iterations,
403 int vary,
404 int expected,
405 const char *label
406 )
407 {
408 struct usb_device *udev = urb->dev;
409 int max = urb->transfer_buffer_length;
410 struct completion completion;
411 int retval = 0;
412 unsigned long expire;
413
414 urb->context = &completion;
415 while (retval == 0 && iterations-- > 0) {
416 init_completion(&completion);
417 if (usb_pipeout(urb->pipe)) {
418 simple_fill_buf(urb);
419 urb->transfer_flags |= URB_ZERO_PACKET;
420 }
421 retval = usb_submit_urb(urb, GFP_KERNEL);
422 if (retval != 0)
423 break;
424
425 expire = msecs_to_jiffies(SIMPLE_IO_TIMEOUT);
426 if (!wait_for_completion_timeout(&completion, expire)) {
427 usb_kill_urb(urb);
428 retval = (urb->status == -ENOENT ?
429 -ETIMEDOUT : urb->status);
430 } else {
431 retval = urb->status;
432 }
433
434 urb->dev = udev;
435 if (retval == 0 && usb_pipein(urb->pipe))
436 retval = simple_check_buf(tdev, urb);
437
438 if (vary) {
439 int len = urb->transfer_buffer_length;
440
441 len += vary;
442 len %= max;
443 if (len == 0)
444 len = (vary < max) ? vary : max;
445 urb->transfer_buffer_length = len;
446 }
447
448 /* FIXME if endpoint halted, clear halt (and log) */
449 }
450 urb->transfer_buffer_length = max;
451
452 if (expected != retval)
453 dev_err(&udev->dev,
454 "%s failed, iterations left %d, status %d (not %d)\n",
455 label, iterations, retval, expected);
456 return retval;
457 }
458
459
460 /*-------------------------------------------------------------------------*/
461
462 /* We use scatterlist primitives to test queued I/O.
463 * Yes, this also tests the scatterlist primitives.
464 */
465
466 static void free_sglist(struct scatterlist *sg, int nents)
467 {
468 unsigned i;
469
470 if (!sg)
471 return;
472 for (i = 0; i < nents; i++) {
473 if (!sg_page(&sg[i]))
474 continue;
475 kfree(sg_virt(&sg[i]));
476 }
477 kfree(sg);
478 }
479
480 static struct scatterlist *
481 alloc_sglist(int nents, int max, int vary)
482 {
483 struct scatterlist *sg;
484 unsigned i;
485 unsigned size = max;
486
487 if (max == 0)
488 return NULL;
489
490 sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL);
491 if (!sg)
492 return NULL;
493 sg_init_table(sg, nents);
494
495 for (i = 0; i < nents; i++) {
496 char *buf;
497 unsigned j;
498
499 buf = kzalloc(size, GFP_KERNEL);
500 if (!buf) {
501 free_sglist(sg, i);
502 return NULL;
503 }
504
505 /* kmalloc pages are always physically contiguous! */
506 sg_set_buf(&sg[i], buf, size);
507
508 switch (pattern) {
509 case 0:
510 /* already zeroed */
511 break;
512 case 1:
513 for (j = 0; j < size; j++)
514 *buf++ = (u8) (j % 63);
515 break;
516 }
517
518 if (vary) {
519 size += vary;
520 size %= max;
521 if (size == 0)
522 size = (vary < max) ? vary : max;
523 }
524 }
525
526 return sg;
527 }
528
529 static void sg_timeout(unsigned long _req)
530 {
531 struct usb_sg_request *req = (struct usb_sg_request *) _req;
532
533 req->status = -ETIMEDOUT;
534 usb_sg_cancel(req);
535 }
536
537 static int perform_sglist(
538 struct usbtest_dev *tdev,
539 unsigned iterations,
540 int pipe,
541 struct usb_sg_request *req,
542 struct scatterlist *sg,
543 int nents
544 )
545 {
546 struct usb_device *udev = testdev_to_usbdev(tdev);
547 int retval = 0;
548 struct timer_list sg_timer;
549
550 setup_timer_on_stack(&sg_timer, sg_timeout, (unsigned long) req);
551
552 while (retval == 0 && iterations-- > 0) {
553 retval = usb_sg_init(req, udev, pipe,
554 (udev->speed == USB_SPEED_HIGH)
555 ? (INTERRUPT_RATE << 3)
556 : INTERRUPT_RATE,
557 sg, nents, 0, GFP_KERNEL);
558
559 if (retval)
560 break;
561 mod_timer(&sg_timer, jiffies +
562 msecs_to_jiffies(SIMPLE_IO_TIMEOUT));
563 usb_sg_wait(req);
564 del_timer_sync(&sg_timer);
565 retval = req->status;
566
567 /* FIXME check resulting data pattern */
568
569 /* FIXME if endpoint halted, clear halt (and log) */
570 }
571
572 /* FIXME for unlink or fault handling tests, don't report
573 * failure if retval is as we expected ...
574 */
575 if (retval)
576 ERROR(tdev, "perform_sglist failed, "
577 "iterations left %d, status %d\n",
578 iterations, retval);
579 return retval;
580 }
581
582
583 /*-------------------------------------------------------------------------*/
584
585 /* unqueued control message testing
586 *
587 * there's a nice set of device functional requirements in chapter 9 of the
588 * usb 2.0 spec, which we can apply to ANY device, even ones that don't use
589 * special test firmware.
590 *
591 * we know the device is configured (or suspended) by the time it's visible
592 * through usbfs. we can't change that, so we won't test enumeration (which
593 * worked 'well enough' to get here, this time), power management (ditto),
594 * or remote wakeup (which needs human interaction).
595 */
596
597 static unsigned realworld = 1;
598 module_param(realworld, uint, 0);
599 MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance");
600
601 static int get_altsetting(struct usbtest_dev *dev)
602 {
603 struct usb_interface *iface = dev->intf;
604 struct usb_device *udev = interface_to_usbdev(iface);
605 int retval;
606
607 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
608 USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE,
609 0, iface->altsetting[0].desc.bInterfaceNumber,
610 dev->buf, 1, USB_CTRL_GET_TIMEOUT);
611 switch (retval) {
612 case 1:
613 return dev->buf[0];
614 case 0:
615 retval = -ERANGE;
616 /* FALLTHROUGH */
617 default:
618 return retval;
619 }
620 }
621
622 static int set_altsetting(struct usbtest_dev *dev, int alternate)
623 {
624 struct usb_interface *iface = dev->intf;
625 struct usb_device *udev;
626
627 if (alternate < 0 || alternate >= 256)
628 return -EINVAL;
629
630 udev = interface_to_usbdev(iface);
631 return usb_set_interface(udev,
632 iface->altsetting[0].desc.bInterfaceNumber,
633 alternate);
634 }
635
636 static int is_good_config(struct usbtest_dev *tdev, int len)
637 {
638 struct usb_config_descriptor *config;
639
640 if (len < sizeof(*config))
641 return 0;
642 config = (struct usb_config_descriptor *) tdev->buf;
643
644 switch (config->bDescriptorType) {
645 case USB_DT_CONFIG:
646 case USB_DT_OTHER_SPEED_CONFIG:
647 if (config->bLength != 9) {
648 ERROR(tdev, "bogus config descriptor length\n");
649 return 0;
650 }
651 /* this bit 'must be 1' but often isn't */
652 if (!realworld && !(config->bmAttributes & 0x80)) {
653 ERROR(tdev, "high bit of config attributes not set\n");
654 return 0;
655 }
656 if (config->bmAttributes & 0x1f) { /* reserved == 0 */
657 ERROR(tdev, "reserved config bits set\n");
658 return 0;
659 }
660 break;
661 default:
662 return 0;
663 }
664
665 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */
666 return 1;
667 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */
668 return 1;
669 ERROR(tdev, "bogus config descriptor read size\n");
670 return 0;
671 }
672
673 static int is_good_ext(struct usbtest_dev *tdev, u8 *buf)
674 {
675 struct usb_ext_cap_descriptor *ext;
676 u32 attr;
677
678 ext = (struct usb_ext_cap_descriptor *) buf;
679
680 if (ext->bLength != USB_DT_USB_EXT_CAP_SIZE) {
681 ERROR(tdev, "bogus usb 2.0 extension descriptor length\n");
682 return 0;
683 }
684
685 attr = le32_to_cpu(ext->bmAttributes);
686 /* bits[1:15] is used and others are reserved */
687 if (attr & ~0xfffe) { /* reserved == 0 */
688 ERROR(tdev, "reserved bits set\n");
689 return 0;
690 }
691
692 return 1;
693 }
694
695 static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf)
696 {
697 struct usb_ss_cap_descriptor *ss;
698
699 ss = (struct usb_ss_cap_descriptor *) buf;
700
701 if (ss->bLength != USB_DT_USB_SS_CAP_SIZE) {
702 ERROR(tdev, "bogus superspeed device capability descriptor length\n");
703 return 0;
704 }
705
706 /*
707 * only bit[1] of bmAttributes is used for LTM and others are
708 * reserved
709 */
710 if (ss->bmAttributes & ~0x02) { /* reserved == 0 */
711 ERROR(tdev, "reserved bits set in bmAttributes\n");
712 return 0;
713 }
714
715 /* bits[0:3] of wSpeedSupported is used and others are reserved */
716 if (le16_to_cpu(ss->wSpeedSupported) & ~0x0f) { /* reserved == 0 */
717 ERROR(tdev, "reserved bits set in wSpeedSupported\n");
718 return 0;
719 }
720
721 return 1;
722 }
723
724 static int is_good_con_id(struct usbtest_dev *tdev, u8 *buf)
725 {
726 struct usb_ss_container_id_descriptor *con_id;
727
728 con_id = (struct usb_ss_container_id_descriptor *) buf;
729
730 if (con_id->bLength != USB_DT_USB_SS_CONTN_ID_SIZE) {
731 ERROR(tdev, "bogus container id descriptor length\n");
732 return 0;
733 }
734
735 if (con_id->bReserved) { /* reserved == 0 */
736 ERROR(tdev, "reserved bits set\n");
737 return 0;
738 }
739
740 return 1;
741 }
742
743 /* sanity test for standard requests working with usb_control_mesg() and some
744 * of the utility functions which use it.
745 *
746 * this doesn't test how endpoint halts behave or data toggles get set, since
747 * we won't do I/O to bulk/interrupt endpoints here (which is how to change
748 * halt or toggle). toggle testing is impractical without support from hcds.
749 *
750 * this avoids failing devices linux would normally work with, by not testing
751 * config/altsetting operations for devices that only support their defaults.
752 * such devices rarely support those needless operations.
753 *
754 * NOTE that since this is a sanity test, it's not examining boundary cases
755 * to see if usbcore, hcd, and device all behave right. such testing would
756 * involve varied read sizes and other operation sequences.
757 */
758 static int ch9_postconfig(struct usbtest_dev *dev)
759 {
760 struct usb_interface *iface = dev->intf;
761 struct usb_device *udev = interface_to_usbdev(iface);
762 int i, alt, retval;
763
764 /* [9.2.3] if there's more than one altsetting, we need to be able to
765 * set and get each one. mostly trusts the descriptors from usbcore.
766 */
767 for (i = 0; i < iface->num_altsetting; i++) {
768
769 /* 9.2.3 constrains the range here */
770 alt = iface->altsetting[i].desc.bAlternateSetting;
771 if (alt < 0 || alt >= iface->num_altsetting) {
772 dev_err(&iface->dev,
773 "invalid alt [%d].bAltSetting = %d\n",
774 i, alt);
775 }
776
777 /* [real world] get/set unimplemented if there's only one */
778 if (realworld && iface->num_altsetting == 1)
779 continue;
780
781 /* [9.4.10] set_interface */
782 retval = set_altsetting(dev, alt);
783 if (retval) {
784 dev_err(&iface->dev, "can't set_interface = %d, %d\n",
785 alt, retval);
786 return retval;
787 }
788
789 /* [9.4.4] get_interface always works */
790 retval = get_altsetting(dev);
791 if (retval != alt) {
792 dev_err(&iface->dev, "get alt should be %d, was %d\n",
793 alt, retval);
794 return (retval < 0) ? retval : -EDOM;
795 }
796
797 }
798
799 /* [real world] get_config unimplemented if there's only one */
800 if (!realworld || udev->descriptor.bNumConfigurations != 1) {
801 int expected = udev->actconfig->desc.bConfigurationValue;
802
803 /* [9.4.2] get_configuration always works
804 * ... although some cheap devices (like one TI Hub I've got)
805 * won't return config descriptors except before set_config.
806 */
807 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
808 USB_REQ_GET_CONFIGURATION,
809 USB_DIR_IN | USB_RECIP_DEVICE,
810 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);
811 if (retval != 1 || dev->buf[0] != expected) {
812 dev_err(&iface->dev, "get config --> %d %d (1 %d)\n",
813 retval, dev->buf[0], expected);
814 return (retval < 0) ? retval : -EDOM;
815 }
816 }
817
818 /* there's always [9.4.3] a device descriptor [9.6.1] */
819 retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0,
820 dev->buf, sizeof(udev->descriptor));
821 if (retval != sizeof(udev->descriptor)) {
822 dev_err(&iface->dev, "dev descriptor --> %d\n", retval);
823 return (retval < 0) ? retval : -EDOM;
824 }
825
826 /*
827 * there's always [9.4.3] a bos device descriptor [9.6.2] in USB
828 * 3.0 spec
829 */
830 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0210) {
831 struct usb_bos_descriptor *bos = NULL;
832 struct usb_dev_cap_header *header = NULL;
833 unsigned total, num, length;
834 u8 *buf;
835
836 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
837 sizeof(*udev->bos->desc));
838 if (retval != sizeof(*udev->bos->desc)) {
839 dev_err(&iface->dev, "bos descriptor --> %d\n", retval);
840 return (retval < 0) ? retval : -EDOM;
841 }
842
843 bos = (struct usb_bos_descriptor *)dev->buf;
844 total = le16_to_cpu(bos->wTotalLength);
845 num = bos->bNumDeviceCaps;
846
847 if (total > TBUF_SIZE)
848 total = TBUF_SIZE;
849
850 /*
851 * get generic device-level capability descriptors [9.6.2]
852 * in USB 3.0 spec
853 */
854 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
855 total);
856 if (retval != total) {
857 dev_err(&iface->dev, "bos descriptor set --> %d\n",
858 retval);
859 return (retval < 0) ? retval : -EDOM;
860 }
861
862 length = sizeof(*udev->bos->desc);
863 buf = dev->buf;
864 for (i = 0; i < num; i++) {
865 buf += length;
866 if (buf + sizeof(struct usb_dev_cap_header) >
867 dev->buf + total)
868 break;
869
870 header = (struct usb_dev_cap_header *)buf;
871 length = header->bLength;
872
873 if (header->bDescriptorType !=
874 USB_DT_DEVICE_CAPABILITY) {
875 dev_warn(&udev->dev, "not device capability descriptor, skip\n");
876 continue;
877 }
878
879 switch (header->bDevCapabilityType) {
880 case USB_CAP_TYPE_EXT:
881 if (buf + USB_DT_USB_EXT_CAP_SIZE >
882 dev->buf + total ||
883 !is_good_ext(dev, buf)) {
884 dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n");
885 return -EDOM;
886 }
887 break;
888 case USB_SS_CAP_TYPE:
889 if (buf + USB_DT_USB_SS_CAP_SIZE >
890 dev->buf + total ||
891 !is_good_ss_cap(dev, buf)) {
892 dev_err(&iface->dev, "bogus superspeed device capability descriptor\n");
893 return -EDOM;
894 }
895 break;
896 case CONTAINER_ID_TYPE:
897 if (buf + USB_DT_USB_SS_CONTN_ID_SIZE >
898 dev->buf + total ||
899 !is_good_con_id(dev, buf)) {
900 dev_err(&iface->dev, "bogus container id descriptor\n");
901 return -EDOM;
902 }
903 break;
904 default:
905 break;
906 }
907 }
908 }
909
910 /* there's always [9.4.3] at least one config descriptor [9.6.3] */
911 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
912 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i,
913 dev->buf, TBUF_SIZE);
914 if (!is_good_config(dev, retval)) {
915 dev_err(&iface->dev,
916 "config [%d] descriptor --> %d\n",
917 i, retval);
918 return (retval < 0) ? retval : -EDOM;
919 }
920
921 /* FIXME cross-checking udev->config[i] to make sure usbcore
922 * parsed it right (etc) would be good testing paranoia
923 */
924 }
925
926 /* and sometimes [9.2.6.6] speed dependent descriptors */
927 if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) {
928 struct usb_qualifier_descriptor *d = NULL;
929
930 /* device qualifier [9.6.2] */
931 retval = usb_get_descriptor(udev,
932 USB_DT_DEVICE_QUALIFIER, 0, dev->buf,
933 sizeof(struct usb_qualifier_descriptor));
934 if (retval == -EPIPE) {
935 if (udev->speed == USB_SPEED_HIGH) {
936 dev_err(&iface->dev,
937 "hs dev qualifier --> %d\n",
938 retval);
939 return (retval < 0) ? retval : -EDOM;
940 }
941 /* usb2.0 but not high-speed capable; fine */
942 } else if (retval != sizeof(struct usb_qualifier_descriptor)) {
943 dev_err(&iface->dev, "dev qualifier --> %d\n", retval);
944 return (retval < 0) ? retval : -EDOM;
945 } else
946 d = (struct usb_qualifier_descriptor *) dev->buf;
947
948 /* might not have [9.6.2] any other-speed configs [9.6.4] */
949 if (d) {
950 unsigned max = d->bNumConfigurations;
951 for (i = 0; i < max; i++) {
952 retval = usb_get_descriptor(udev,
953 USB_DT_OTHER_SPEED_CONFIG, i,
954 dev->buf, TBUF_SIZE);
955 if (!is_good_config(dev, retval)) {
956 dev_err(&iface->dev,
957 "other speed config --> %d\n",
958 retval);
959 return (retval < 0) ? retval : -EDOM;
960 }
961 }
962 }
963 }
964 /* FIXME fetch strings from at least the device descriptor */
965
966 /* [9.4.5] get_status always works */
967 retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf);
968 if (retval) {
969 dev_err(&iface->dev, "get dev status --> %d\n", retval);
970 return retval;
971 }
972
973 /* FIXME configuration.bmAttributes says if we could try to set/clear
974 * the device's remote wakeup feature ... if we can, test that here
975 */
976
977 retval = usb_get_status(udev, USB_RECIP_INTERFACE,
978 iface->altsetting[0].desc.bInterfaceNumber, dev->buf);
979 if (retval) {
980 dev_err(&iface->dev, "get interface status --> %d\n", retval);
981 return retval;
982 }
983 /* FIXME get status for each endpoint in the interface */
984
985 return 0;
986 }
987
988 /*-------------------------------------------------------------------------*/
989
990 /* use ch9 requests to test whether:
991 * (a) queues work for control, keeping N subtests queued and
992 * active (auto-resubmit) for M loops through the queue.
993 * (b) protocol stalls (control-only) will autorecover.
994 * it's not like bulk/intr; no halt clearing.
995 * (c) short control reads are reported and handled.
996 * (d) queues are always processed in-order
997 */
998
999 struct ctrl_ctx {
1000 spinlock_t lock;
1001 struct usbtest_dev *dev;
1002 struct completion complete;
1003 unsigned count;
1004 unsigned pending;
1005 int status;
1006 struct urb **urb;
1007 struct usbtest_param *param;
1008 int last;
1009 };
1010
1011 #define NUM_SUBCASES 16 /* how many test subcases here? */
1012
1013 struct subcase {
1014 struct usb_ctrlrequest setup;
1015 int number;
1016 int expected;
1017 };
1018
1019 static void ctrl_complete(struct urb *urb)
1020 {
1021 struct ctrl_ctx *ctx = urb->context;
1022 struct usb_ctrlrequest *reqp;
1023 struct subcase *subcase;
1024 int status = urb->status;
1025
1026 reqp = (struct usb_ctrlrequest *)urb->setup_packet;
1027 subcase = container_of(reqp, struct subcase, setup);
1028
1029 spin_lock(&ctx->lock);
1030 ctx->count--;
1031 ctx->pending--;
1032
1033 /* queue must transfer and complete in fifo order, unless
1034 * usb_unlink_urb() is used to unlink something not at the
1035 * physical queue head (not tested).
1036 */
1037 if (subcase->number > 0) {
1038 if ((subcase->number - ctx->last) != 1) {
1039 ERROR(ctx->dev,
1040 "subcase %d completed out of order, last %d\n",
1041 subcase->number, ctx->last);
1042 status = -EDOM;
1043 ctx->last = subcase->number;
1044 goto error;
1045 }
1046 }
1047 ctx->last = subcase->number;
1048
1049 /* succeed or fault in only one way? */
1050 if (status == subcase->expected)
1051 status = 0;
1052
1053 /* async unlink for cleanup? */
1054 else if (status != -ECONNRESET) {
1055
1056 /* some faults are allowed, not required */
1057 if (subcase->expected > 0 && (
1058 ((status == -subcase->expected /* happened */
1059 || status == 0)))) /* didn't */
1060 status = 0;
1061 /* sometimes more than one fault is allowed */
1062 else if (subcase->number == 12 && status == -EPIPE)
1063 status = 0;
1064 else
1065 ERROR(ctx->dev, "subtest %d error, status %d\n",
1066 subcase->number, status);
1067 }
1068
1069 /* unexpected status codes mean errors; ideally, in hardware */
1070 if (status) {
1071 error:
1072 if (ctx->status == 0) {
1073 int i;
1074
1075 ctx->status = status;
1076 ERROR(ctx->dev, "control queue %02x.%02x, err %d, "
1077 "%d left, subcase %d, len %d/%d\n",
1078 reqp->bRequestType, reqp->bRequest,
1079 status, ctx->count, subcase->number,
1080 urb->actual_length,
1081 urb->transfer_buffer_length);
1082
1083 /* FIXME this "unlink everything" exit route should
1084 * be a separate test case.
1085 */
1086
1087 /* unlink whatever's still pending */
1088 for (i = 1; i < ctx->param->sglen; i++) {
1089 struct urb *u = ctx->urb[
1090 (i + subcase->number)
1091 % ctx->param->sglen];
1092
1093 if (u == urb || !u->dev)
1094 continue;
1095 spin_unlock(&ctx->lock);
1096 status = usb_unlink_urb(u);
1097 spin_lock(&ctx->lock);
1098 switch (status) {
1099 case -EINPROGRESS:
1100 case -EBUSY:
1101 case -EIDRM:
1102 continue;
1103 default:
1104 ERROR(ctx->dev, "urb unlink --> %d\n",
1105 status);
1106 }
1107 }
1108 status = ctx->status;
1109 }
1110 }
1111
1112 /* resubmit if we need to, else mark this as done */
1113 if ((status == 0) && (ctx->pending < ctx->count)) {
1114 status = usb_submit_urb(urb, GFP_ATOMIC);
1115 if (status != 0) {
1116 ERROR(ctx->dev,
1117 "can't resubmit ctrl %02x.%02x, err %d\n",
1118 reqp->bRequestType, reqp->bRequest, status);
1119 urb->dev = NULL;
1120 } else
1121 ctx->pending++;
1122 } else
1123 urb->dev = NULL;
1124
1125 /* signal completion when nothing's queued */
1126 if (ctx->pending == 0)
1127 complete(&ctx->complete);
1128 spin_unlock(&ctx->lock);
1129 }
1130
1131 static int
1132 test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param)
1133 {
1134 struct usb_device *udev = testdev_to_usbdev(dev);
1135 struct urb **urb;
1136 struct ctrl_ctx context;
1137 int i;
1138
1139 if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen)
1140 return -EOPNOTSUPP;
1141
1142 spin_lock_init(&context.lock);
1143 context.dev = dev;
1144 init_completion(&context.complete);
1145 context.count = param->sglen * param->iterations;
1146 context.pending = 0;
1147 context.status = -ENOMEM;
1148 context.param = param;
1149 context.last = -1;
1150
1151 /* allocate and init the urbs we'll queue.
1152 * as with bulk/intr sglists, sglen is the queue depth; it also
1153 * controls which subtests run (more tests than sglen) or rerun.
1154 */
1155 urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL);
1156 if (!urb)
1157 return -ENOMEM;
1158 for (i = 0; i < param->sglen; i++) {
1159 int pipe = usb_rcvctrlpipe(udev, 0);
1160 unsigned len;
1161 struct urb *u;
1162 struct usb_ctrlrequest req;
1163 struct subcase *reqp;
1164
1165 /* sign of this variable means:
1166 * -: tested code must return this (negative) error code
1167 * +: tested code may return this (negative too) error code
1168 */
1169 int expected = 0;
1170
1171 /* requests here are mostly expected to succeed on any
1172 * device, but some are chosen to trigger protocol stalls
1173 * or short reads.
1174 */
1175 memset(&req, 0, sizeof(req));
1176 req.bRequest = USB_REQ_GET_DESCRIPTOR;
1177 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1178
1179 switch (i % NUM_SUBCASES) {
1180 case 0: /* get device descriptor */
1181 req.wValue = cpu_to_le16(USB_DT_DEVICE << 8);
1182 len = sizeof(struct usb_device_descriptor);
1183 break;
1184 case 1: /* get first config descriptor (only) */
1185 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1186 len = sizeof(struct usb_config_descriptor);
1187 break;
1188 case 2: /* get altsetting (OFTEN STALLS) */
1189 req.bRequest = USB_REQ_GET_INTERFACE;
1190 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1191 /* index = 0 means first interface */
1192 len = 1;
1193 expected = EPIPE;
1194 break;
1195 case 3: /* get interface status */
1196 req.bRequest = USB_REQ_GET_STATUS;
1197 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1198 /* interface 0 */
1199 len = 2;
1200 break;
1201 case 4: /* get device status */
1202 req.bRequest = USB_REQ_GET_STATUS;
1203 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1204 len = 2;
1205 break;
1206 case 5: /* get device qualifier (MAY STALL) */
1207 req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8);
1208 len = sizeof(struct usb_qualifier_descriptor);
1209 if (udev->speed != USB_SPEED_HIGH)
1210 expected = EPIPE;
1211 break;
1212 case 6: /* get first config descriptor, plus interface */
1213 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1214 len = sizeof(struct usb_config_descriptor);
1215 len += sizeof(struct usb_interface_descriptor);
1216 break;
1217 case 7: /* get interface descriptor (ALWAYS STALLS) */
1218 req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8);
1219 /* interface == 0 */
1220 len = sizeof(struct usb_interface_descriptor);
1221 expected = -EPIPE;
1222 break;
1223 /* NOTE: two consecutive stalls in the queue here.
1224 * that tests fault recovery a bit more aggressively. */
1225 case 8: /* clear endpoint halt (MAY STALL) */
1226 req.bRequest = USB_REQ_CLEAR_FEATURE;
1227 req.bRequestType = USB_RECIP_ENDPOINT;
1228 /* wValue 0 == ep halt */
1229 /* wIndex 0 == ep0 (shouldn't halt!) */
1230 len = 0;
1231 pipe = usb_sndctrlpipe(udev, 0);
1232 expected = EPIPE;
1233 break;
1234 case 9: /* get endpoint status */
1235 req.bRequest = USB_REQ_GET_STATUS;
1236 req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT;
1237 /* endpoint 0 */
1238 len = 2;
1239 break;
1240 case 10: /* trigger short read (EREMOTEIO) */
1241 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1242 len = 1024;
1243 expected = -EREMOTEIO;
1244 break;
1245 /* NOTE: two consecutive _different_ faults in the queue. */
1246 case 11: /* get endpoint descriptor (ALWAYS STALLS) */
1247 req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8);
1248 /* endpoint == 0 */
1249 len = sizeof(struct usb_interface_descriptor);
1250 expected = EPIPE;
1251 break;
1252 /* NOTE: sometimes even a third fault in the queue! */
1253 case 12: /* get string 0 descriptor (MAY STALL) */
1254 req.wValue = cpu_to_le16(USB_DT_STRING << 8);
1255 /* string == 0, for language IDs */
1256 len = sizeof(struct usb_interface_descriptor);
1257 /* may succeed when > 4 languages */
1258 expected = EREMOTEIO; /* or EPIPE, if no strings */
1259 break;
1260 case 13: /* short read, resembling case 10 */
1261 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1262 /* last data packet "should" be DATA1, not DATA0 */
1263 if (udev->speed == USB_SPEED_SUPER)
1264 len = 1024 - 512;
1265 else
1266 len = 1024 - udev->descriptor.bMaxPacketSize0;
1267 expected = -EREMOTEIO;
1268 break;
1269 case 14: /* short read; try to fill the last packet */
1270 req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0);
1271 /* device descriptor size == 18 bytes */
1272 len = udev->descriptor.bMaxPacketSize0;
1273 if (udev->speed == USB_SPEED_SUPER)
1274 len = 512;
1275 switch (len) {
1276 case 8:
1277 len = 24;
1278 break;
1279 case 16:
1280 len = 32;
1281 break;
1282 }
1283 expected = -EREMOTEIO;
1284 break;
1285 case 15:
1286 req.wValue = cpu_to_le16(USB_DT_BOS << 8);
1287 if (udev->bos)
1288 len = le16_to_cpu(udev->bos->desc->wTotalLength);
1289 else
1290 len = sizeof(struct usb_bos_descriptor);
1291 if (le16_to_cpu(udev->descriptor.bcdUSB) < 0x0201)
1292 expected = -EPIPE;
1293 break;
1294 default:
1295 ERROR(dev, "bogus number of ctrl queue testcases!\n");
1296 context.status = -EINVAL;
1297 goto cleanup;
1298 }
1299 req.wLength = cpu_to_le16(len);
1300 urb[i] = u = simple_alloc_urb(udev, pipe, len, 0);
1301 if (!u)
1302 goto cleanup;
1303
1304 reqp = kmalloc(sizeof(*reqp), GFP_KERNEL);
1305 if (!reqp)
1306 goto cleanup;
1307 reqp->setup = req;
1308 reqp->number = i % NUM_SUBCASES;
1309 reqp->expected = expected;
1310 u->setup_packet = (char *) &reqp->setup;
1311
1312 u->context = &context;
1313 u->complete = ctrl_complete;
1314 }
1315
1316 /* queue the urbs */
1317 context.urb = urb;
1318 spin_lock_irq(&context.lock);
1319 for (i = 0; i < param->sglen; i++) {
1320 context.status = usb_submit_urb(urb[i], GFP_ATOMIC);
1321 if (context.status != 0) {
1322 ERROR(dev, "can't submit urb[%d], status %d\n",
1323 i, context.status);
1324 context.count = context.pending;
1325 break;
1326 }
1327 context.pending++;
1328 }
1329 spin_unlock_irq(&context.lock);
1330
1331 /* FIXME set timer and time out; provide a disconnect hook */
1332
1333 /* wait for the last one to complete */
1334 if (context.pending > 0)
1335 wait_for_completion(&context.complete);
1336
1337 cleanup:
1338 for (i = 0; i < param->sglen; i++) {
1339 if (!urb[i])
1340 continue;
1341 urb[i]->dev = udev;
1342 kfree(urb[i]->setup_packet);
1343 simple_free_urb(urb[i]);
1344 }
1345 kfree(urb);
1346 return context.status;
1347 }
1348 #undef NUM_SUBCASES
1349
1350
1351 /*-------------------------------------------------------------------------*/
1352
1353 static void unlink1_callback(struct urb *urb)
1354 {
1355 int status = urb->status;
1356
1357 /* we "know" -EPIPE (stall) never happens */
1358 if (!status)
1359 status = usb_submit_urb(urb, GFP_ATOMIC);
1360 if (status) {
1361 urb->status = status;
1362 complete(urb->context);
1363 }
1364 }
1365
1366 static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
1367 {
1368 struct urb *urb;
1369 struct completion completion;
1370 int retval = 0;
1371
1372 init_completion(&completion);
1373 urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size, 0);
1374 if (!urb)
1375 return -ENOMEM;
1376 urb->context = &completion;
1377 urb->complete = unlink1_callback;
1378
1379 if (usb_pipeout(urb->pipe)) {
1380 simple_fill_buf(urb);
1381 urb->transfer_flags |= URB_ZERO_PACKET;
1382 }
1383
1384 /* keep the endpoint busy. there are lots of hc/hcd-internal
1385 * states, and testing should get to all of them over time.
1386 *
1387 * FIXME want additional tests for when endpoint is STALLing
1388 * due to errors, or is just NAKing requests.
1389 */
1390 retval = usb_submit_urb(urb, GFP_KERNEL);
1391 if (retval != 0) {
1392 dev_err(&dev->intf->dev, "submit fail %d\n", retval);
1393 return retval;
1394 }
1395
1396 /* unlinking that should always work. variable delay tests more
1397 * hcd states and code paths, even with little other system load.
1398 */
1399 msleep(jiffies % (2 * INTERRUPT_RATE));
1400 if (async) {
1401 while (!completion_done(&completion)) {
1402 retval = usb_unlink_urb(urb);
1403
1404 if (retval == 0 && usb_pipein(urb->pipe))
1405 retval = simple_check_buf(dev, urb);
1406
1407 switch (retval) {
1408 case -EBUSY:
1409 case -EIDRM:
1410 /* we can't unlink urbs while they're completing
1411 * or if they've completed, and we haven't
1412 * resubmitted. "normal" drivers would prevent
1413 * resubmission, but since we're testing unlink
1414 * paths, we can't.
1415 */
1416 ERROR(dev, "unlink retry\n");
1417 continue;
1418 case 0:
1419 case -EINPROGRESS:
1420 break;
1421
1422 default:
1423 dev_err(&dev->intf->dev,
1424 "unlink fail %d\n", retval);
1425 return retval;
1426 }
1427
1428 break;
1429 }
1430 } else
1431 usb_kill_urb(urb);
1432
1433 wait_for_completion(&completion);
1434 retval = urb->status;
1435 simple_free_urb(urb);
1436
1437 if (async)
1438 return (retval == -ECONNRESET) ? 0 : retval - 1000;
1439 else
1440 return (retval == -ENOENT || retval == -EPERM) ?
1441 0 : retval - 2000;
1442 }
1443
1444 static int unlink_simple(struct usbtest_dev *dev, int pipe, int len)
1445 {
1446 int retval = 0;
1447
1448 /* test sync and async paths */
1449 retval = unlink1(dev, pipe, len, 1);
1450 if (!retval)
1451 retval = unlink1(dev, pipe, len, 0);
1452 return retval;
1453 }
1454
1455 /*-------------------------------------------------------------------------*/
1456
1457 struct queued_ctx {
1458 struct completion complete;
1459 atomic_t pending;
1460 unsigned num;
1461 int status;
1462 struct urb **urbs;
1463 };
1464
1465 static void unlink_queued_callback(struct urb *urb)
1466 {
1467 int status = urb->status;
1468 struct queued_ctx *ctx = urb->context;
1469
1470 if (ctx->status)
1471 goto done;
1472 if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) {
1473 if (status == -ECONNRESET)
1474 goto done;
1475 /* What error should we report if the URB completed normally? */
1476 }
1477 if (status != 0)
1478 ctx->status = status;
1479
1480 done:
1481 if (atomic_dec_and_test(&ctx->pending))
1482 complete(&ctx->complete);
1483 }
1484
1485 static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num,
1486 unsigned size)
1487 {
1488 struct queued_ctx ctx;
1489 struct usb_device *udev = testdev_to_usbdev(dev);
1490 void *buf;
1491 dma_addr_t buf_dma;
1492 int i;
1493 int retval = -ENOMEM;
1494
1495 init_completion(&ctx.complete);
1496 atomic_set(&ctx.pending, 1); /* One more than the actual value */
1497 ctx.num = num;
1498 ctx.status = 0;
1499
1500 buf = usb_alloc_coherent(udev, size, GFP_KERNEL, &buf_dma);
1501 if (!buf)
1502 return retval;
1503 memset(buf, 0, size);
1504
1505 /* Allocate and init the urbs we'll queue */
1506 ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL);
1507 if (!ctx.urbs)
1508 goto free_buf;
1509 for (i = 0; i < num; i++) {
1510 ctx.urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
1511 if (!ctx.urbs[i])
1512 goto free_urbs;
1513 usb_fill_bulk_urb(ctx.urbs[i], udev, pipe, buf, size,
1514 unlink_queued_callback, &ctx);
1515 ctx.urbs[i]->transfer_dma = buf_dma;
1516 ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1517
1518 if (usb_pipeout(ctx.urbs[i]->pipe)) {
1519 simple_fill_buf(ctx.urbs[i]);
1520 ctx.urbs[i]->transfer_flags |= URB_ZERO_PACKET;
1521 }
1522 }
1523
1524 /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */
1525 for (i = 0; i < num; i++) {
1526 atomic_inc(&ctx.pending);
1527 retval = usb_submit_urb(ctx.urbs[i], GFP_KERNEL);
1528 if (retval != 0) {
1529 dev_err(&dev->intf->dev, "submit urbs[%d] fail %d\n",
1530 i, retval);
1531 atomic_dec(&ctx.pending);
1532 ctx.status = retval;
1533 break;
1534 }
1535 }
1536 if (i == num) {
1537 usb_unlink_urb(ctx.urbs[num - 4]);
1538 usb_unlink_urb(ctx.urbs[num - 2]);
1539 } else {
1540 while (--i >= 0)
1541 usb_unlink_urb(ctx.urbs[i]);
1542 }
1543
1544 if (atomic_dec_and_test(&ctx.pending)) /* The extra count */
1545 complete(&ctx.complete);
1546 wait_for_completion(&ctx.complete);
1547 retval = ctx.status;
1548
1549 free_urbs:
1550 for (i = 0; i < num; i++)
1551 usb_free_urb(ctx.urbs[i]);
1552 kfree(ctx.urbs);
1553 free_buf:
1554 usb_free_coherent(udev, size, buf, buf_dma);
1555 return retval;
1556 }
1557
1558 /*-------------------------------------------------------------------------*/
1559
1560 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1561 {
1562 int retval;
1563 u16 status;
1564
1565 /* shouldn't look or act halted */
1566 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1567 if (retval < 0) {
1568 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n",
1569 ep, retval);
1570 return retval;
1571 }
1572 if (status != 0) {
1573 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status);
1574 return -EINVAL;
1575 }
1576 retval = simple_io(tdev, urb, 1, 0, 0, __func__);
1577 if (retval != 0)
1578 return -EINVAL;
1579 return 0;
1580 }
1581
1582 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1583 {
1584 int retval;
1585 u16 status;
1586
1587 /* should look and act halted */
1588 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1589 if (retval < 0) {
1590 ERROR(tdev, "ep %02x couldn't get halt status, %d\n",
1591 ep, retval);
1592 return retval;
1593 }
1594 if (status != 1) {
1595 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status);
1596 return -EINVAL;
1597 }
1598 retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__);
1599 if (retval != -EPIPE)
1600 return -EINVAL;
1601 retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted");
1602 if (retval != -EPIPE)
1603 return -EINVAL;
1604 return 0;
1605 }
1606
1607 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb)
1608 {
1609 int retval;
1610
1611 /* shouldn't look or act halted now */
1612 retval = verify_not_halted(tdev, ep, urb);
1613 if (retval < 0)
1614 return retval;
1615
1616 /* set halt (protocol test only), verify it worked */
1617 retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0),
1618 USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT,
1619 USB_ENDPOINT_HALT, ep,
1620 NULL, 0, USB_CTRL_SET_TIMEOUT);
1621 if (retval < 0) {
1622 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval);
1623 return retval;
1624 }
1625 retval = verify_halted(tdev, ep, urb);
1626 if (retval < 0) {
1627 int ret;
1628
1629 /* clear halt anyways, else further tests will fail */
1630 ret = usb_clear_halt(urb->dev, urb->pipe);
1631 if (ret)
1632 ERROR(tdev, "ep %02x couldn't clear halt, %d\n",
1633 ep, ret);
1634
1635 return retval;
1636 }
1637
1638 /* clear halt (tests API + protocol), verify it worked */
1639 retval = usb_clear_halt(urb->dev, urb->pipe);
1640 if (retval < 0) {
1641 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval);
1642 return retval;
1643 }
1644 retval = verify_not_halted(tdev, ep, urb);
1645 if (retval < 0)
1646 return retval;
1647
1648 /* NOTE: could also verify SET_INTERFACE clear halts ... */
1649
1650 return 0;
1651 }
1652
1653 static int halt_simple(struct usbtest_dev *dev)
1654 {
1655 int ep;
1656 int retval = 0;
1657 struct urb *urb;
1658 struct usb_device *udev = testdev_to_usbdev(dev);
1659
1660 if (udev->speed == USB_SPEED_SUPER)
1661 urb = simple_alloc_urb(udev, 0, 1024, 0);
1662 else
1663 urb = simple_alloc_urb(udev, 0, 512, 0);
1664 if (urb == NULL)
1665 return -ENOMEM;
1666
1667 if (dev->in_pipe) {
1668 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN;
1669 urb->pipe = dev->in_pipe;
1670 retval = test_halt(dev, ep, urb);
1671 if (retval < 0)
1672 goto done;
1673 }
1674
1675 if (dev->out_pipe) {
1676 ep = usb_pipeendpoint(dev->out_pipe);
1677 urb->pipe = dev->out_pipe;
1678 retval = test_halt(dev, ep, urb);
1679 }
1680 done:
1681 simple_free_urb(urb);
1682 return retval;
1683 }
1684
1685 /*-------------------------------------------------------------------------*/
1686
1687 /* Control OUT tests use the vendor control requests from Intel's
1688 * USB 2.0 compliance test device: write a buffer, read it back.
1689 *
1690 * Intel's spec only _requires_ that it work for one packet, which
1691 * is pretty weak. Some HCDs place limits here; most devices will
1692 * need to be able to handle more than one OUT data packet. We'll
1693 * try whatever we're told to try.
1694 */
1695 static int ctrl_out(struct usbtest_dev *dev,
1696 unsigned count, unsigned length, unsigned vary, unsigned offset)
1697 {
1698 unsigned i, j, len;
1699 int retval;
1700 u8 *buf;
1701 char *what = "?";
1702 struct usb_device *udev;
1703
1704 if (length < 1 || length > 0xffff || vary >= length)
1705 return -EINVAL;
1706
1707 buf = kmalloc(length + offset, GFP_KERNEL);
1708 if (!buf)
1709 return -ENOMEM;
1710
1711 buf += offset;
1712 udev = testdev_to_usbdev(dev);
1713 len = length;
1714 retval = 0;
1715
1716 /* NOTE: hardware might well act differently if we pushed it
1717 * with lots back-to-back queued requests.
1718 */
1719 for (i = 0; i < count; i++) {
1720 /* write patterned data */
1721 for (j = 0; j < len; j++)
1722 buf[j] = i + j;
1723 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1724 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR,
1725 0, 0, buf, len, USB_CTRL_SET_TIMEOUT);
1726 if (retval != len) {
1727 what = "write";
1728 if (retval >= 0) {
1729 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n",
1730 retval, len);
1731 retval = -EBADMSG;
1732 }
1733 break;
1734 }
1735
1736 /* read it back -- assuming nothing intervened!! */
1737 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
1738 0x5c, USB_DIR_IN|USB_TYPE_VENDOR,
1739 0, 0, buf, len, USB_CTRL_GET_TIMEOUT);
1740 if (retval != len) {
1741 what = "read";
1742 if (retval >= 0) {
1743 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n",
1744 retval, len);
1745 retval = -EBADMSG;
1746 }
1747 break;
1748 }
1749
1750 /* fail if we can't verify */
1751 for (j = 0; j < len; j++) {
1752 if (buf[j] != (u8) (i + j)) {
1753 ERROR(dev, "ctrl_out, byte %d is %d not %d\n",
1754 j, buf[j], (u8) i + j);
1755 retval = -EBADMSG;
1756 break;
1757 }
1758 }
1759 if (retval < 0) {
1760 what = "verify";
1761 break;
1762 }
1763
1764 len += vary;
1765
1766 /* [real world] the "zero bytes IN" case isn't really used.
1767 * hardware can easily trip up in this weird case, since its
1768 * status stage is IN, not OUT like other ep0in transfers.
1769 */
1770 if (len > length)
1771 len = realworld ? 1 : 0;
1772 }
1773
1774 if (retval < 0)
1775 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n",
1776 what, retval, i);
1777
1778 kfree(buf - offset);
1779 return retval;
1780 }
1781
1782 /*-------------------------------------------------------------------------*/
1783
1784 /* ISO tests ... mimics common usage
1785 * - buffer length is split into N packets (mostly maxpacket sized)
1786 * - multi-buffers according to sglen
1787 */
1788
1789 struct iso_context {
1790 unsigned count;
1791 unsigned pending;
1792 spinlock_t lock;
1793 struct completion done;
1794 int submit_error;
1795 unsigned long errors;
1796 unsigned long packet_count;
1797 struct usbtest_dev *dev;
1798 };
1799
1800 static void iso_callback(struct urb *urb)
1801 {
1802 struct iso_context *ctx = urb->context;
1803
1804 spin_lock(&ctx->lock);
1805 ctx->count--;
1806
1807 ctx->packet_count += urb->number_of_packets;
1808 if (urb->error_count > 0)
1809 ctx->errors += urb->error_count;
1810 else if (urb->status != 0)
1811 ctx->errors += urb->number_of_packets;
1812 else if (urb->actual_length != urb->transfer_buffer_length)
1813 ctx->errors++;
1814 else if (check_guard_bytes(ctx->dev, urb) != 0)
1815 ctx->errors++;
1816
1817 if (urb->status == 0 && ctx->count > (ctx->pending - 1)
1818 && !ctx->submit_error) {
1819 int status = usb_submit_urb(urb, GFP_ATOMIC);
1820 switch (status) {
1821 case 0:
1822 goto done;
1823 default:
1824 dev_err(&ctx->dev->intf->dev,
1825 "iso resubmit err %d\n",
1826 status);
1827 /* FALLTHROUGH */
1828 case -ENODEV: /* disconnected */
1829 case -ESHUTDOWN: /* endpoint disabled */
1830 ctx->submit_error = 1;
1831 break;
1832 }
1833 }
1834
1835 ctx->pending--;
1836 if (ctx->pending == 0) {
1837 if (ctx->errors)
1838 dev_err(&ctx->dev->intf->dev,
1839 "iso test, %lu errors out of %lu\n",
1840 ctx->errors, ctx->packet_count);
1841 complete(&ctx->done);
1842 }
1843 done:
1844 spin_unlock(&ctx->lock);
1845 }
1846
1847 static struct urb *iso_alloc_urb(
1848 struct usb_device *udev,
1849 int pipe,
1850 struct usb_endpoint_descriptor *desc,
1851 long bytes,
1852 unsigned offset
1853 )
1854 {
1855 struct urb *urb;
1856 unsigned i, maxp, packets;
1857
1858 if (bytes < 0 || !desc)
1859 return NULL;
1860 maxp = 0x7ff & usb_endpoint_maxp(desc);
1861 maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11));
1862 packets = DIV_ROUND_UP(bytes, maxp);
1863
1864 urb = usb_alloc_urb(packets, GFP_KERNEL);
1865 if (!urb)
1866 return urb;
1867 urb->dev = udev;
1868 urb->pipe = pipe;
1869
1870 urb->number_of_packets = packets;
1871 urb->transfer_buffer_length = bytes;
1872 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
1873 GFP_KERNEL,
1874 &urb->transfer_dma);
1875 if (!urb->transfer_buffer) {
1876 usb_free_urb(urb);
1877 return NULL;
1878 }
1879 if (offset) {
1880 memset(urb->transfer_buffer, GUARD_BYTE, offset);
1881 urb->transfer_buffer += offset;
1882 urb->transfer_dma += offset;
1883 }
1884 /* For inbound transfers use guard byte so that test fails if
1885 data not correctly copied */
1886 memset(urb->transfer_buffer,
1887 usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
1888 bytes);
1889
1890 for (i = 0; i < packets; i++) {
1891 /* here, only the last packet will be short */
1892 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp);
1893 bytes -= urb->iso_frame_desc[i].length;
1894
1895 urb->iso_frame_desc[i].offset = maxp * i;
1896 }
1897
1898 urb->complete = iso_callback;
1899 /* urb->context = SET BY CALLER */
1900 urb->interval = 1 << (desc->bInterval - 1);
1901 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1902 return urb;
1903 }
1904
1905 static int
1906 test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param,
1907 int pipe, struct usb_endpoint_descriptor *desc, unsigned offset)
1908 {
1909 struct iso_context context;
1910 struct usb_device *udev;
1911 unsigned i;
1912 unsigned long packets = 0;
1913 int status = 0;
1914 struct urb *urbs[10]; /* FIXME no limit */
1915
1916 if (param->sglen > 10)
1917 return -EDOM;
1918
1919 memset(&context, 0, sizeof(context));
1920 context.count = param->iterations * param->sglen;
1921 context.dev = dev;
1922 init_completion(&context.done);
1923 spin_lock_init(&context.lock);
1924
1925 memset(urbs, 0, sizeof(urbs));
1926 udev = testdev_to_usbdev(dev);
1927 dev_info(&dev->intf->dev,
1928 "... iso period %d %sframes, wMaxPacket %04x\n",
1929 1 << (desc->bInterval - 1),
1930 (udev->speed == USB_SPEED_HIGH) ? "micro" : "",
1931 usb_endpoint_maxp(desc));
1932
1933 for (i = 0; i < param->sglen; i++) {
1934 urbs[i] = iso_alloc_urb(udev, pipe, desc,
1935 param->length, offset);
1936 if (!urbs[i]) {
1937 status = -ENOMEM;
1938 goto fail;
1939 }
1940 packets += urbs[i]->number_of_packets;
1941 urbs[i]->context = &context;
1942 }
1943 packets *= param->iterations;
1944 dev_info(&dev->intf->dev,
1945 "... total %lu msec (%lu packets)\n",
1946 (packets * (1 << (desc->bInterval - 1)))
1947 / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1),
1948 packets);
1949
1950 spin_lock_irq(&context.lock);
1951 for (i = 0; i < param->sglen; i++) {
1952 ++context.pending;
1953 status = usb_submit_urb(urbs[i], GFP_ATOMIC);
1954 if (status < 0) {
1955 ERROR(dev, "submit iso[%d], error %d\n", i, status);
1956 if (i == 0) {
1957 spin_unlock_irq(&context.lock);
1958 goto fail;
1959 }
1960
1961 simple_free_urb(urbs[i]);
1962 urbs[i] = NULL;
1963 context.pending--;
1964 context.submit_error = 1;
1965 break;
1966 }
1967 }
1968 spin_unlock_irq(&context.lock);
1969
1970 wait_for_completion(&context.done);
1971
1972 for (i = 0; i < param->sglen; i++) {
1973 if (urbs[i])
1974 simple_free_urb(urbs[i]);
1975 }
1976 /*
1977 * Isochronous transfers are expected to fail sometimes. As an
1978 * arbitrary limit, we will report an error if any submissions
1979 * fail or if the transfer failure rate is > 10%.
1980 */
1981 if (status != 0)
1982 ;
1983 else if (context.submit_error)
1984 status = -EACCES;
1985 else if (context.errors > context.packet_count / 10)
1986 status = -EIO;
1987 return status;
1988
1989 fail:
1990 for (i = 0; i < param->sglen; i++) {
1991 if (urbs[i])
1992 simple_free_urb(urbs[i]);
1993 }
1994 return status;
1995 }
1996
1997 static int test_unaligned_bulk(
1998 struct usbtest_dev *tdev,
1999 int pipe,
2000 unsigned length,
2001 int iterations,
2002 unsigned transfer_flags,
2003 const char *label)
2004 {
2005 int retval;
2006 struct urb *urb = usbtest_alloc_urb(
2007 testdev_to_usbdev(tdev), pipe, length, transfer_flags, 1, 0);
2008
2009 if (!urb)
2010 return -ENOMEM;
2011
2012 retval = simple_io(tdev, urb, iterations, 0, 0, label);
2013 simple_free_urb(urb);
2014 return retval;
2015 }
2016
2017 /*-------------------------------------------------------------------------*/
2018
2019 /* We only have this one interface to user space, through usbfs.
2020 * User mode code can scan usbfs to find N different devices (maybe on
2021 * different busses) to use when testing, and allocate one thread per
2022 * test. So discovery is simplified, and we have no device naming issues.
2023 *
2024 * Don't use these only as stress/load tests. Use them along with with
2025 * other USB bus activity: plugging, unplugging, mousing, mp3 playback,
2026 * video capture, and so on. Run different tests at different times, in
2027 * different sequences. Nothing here should interact with other devices,
2028 * except indirectly by consuming USB bandwidth and CPU resources for test
2029 * threads and request completion. But the only way to know that for sure
2030 * is to test when HC queues are in use by many devices.
2031 *
2032 * WARNING: Because usbfs grabs udev->dev.sem before calling this ioctl(),
2033 * it locks out usbcore in certain code paths. Notably, if you disconnect
2034 * the device-under-test, hub_wq will wait block forever waiting for the
2035 * ioctl to complete ... so that usb_disconnect() can abort the pending
2036 * urbs and then call usbtest_disconnect(). To abort a test, you're best
2037 * off just killing the userspace task and waiting for it to exit.
2038 */
2039
2040 static int
2041 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
2042 {
2043 struct usbtest_dev *dev = usb_get_intfdata(intf);
2044 struct usb_device *udev = testdev_to_usbdev(dev);
2045 struct usbtest_param *param = buf;
2046 int retval = -EOPNOTSUPP;
2047 struct urb *urb;
2048 struct scatterlist *sg;
2049 struct usb_sg_request req;
2050 struct timeval start;
2051 unsigned i;
2052
2053 /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */
2054
2055 pattern = mod_pattern;
2056
2057 if (code != USBTEST_REQUEST)
2058 return -EOPNOTSUPP;
2059
2060 if (param->iterations <= 0)
2061 return -EINVAL;
2062
2063 if (mutex_lock_interruptible(&dev->lock))
2064 return -ERESTARTSYS;
2065
2066 /* FIXME: What if a system sleep starts while a test is running? */
2067
2068 /* some devices, like ez-usb default devices, need a non-default
2069 * altsetting to have any active endpoints. some tests change
2070 * altsettings; force a default so most tests don't need to check.
2071 */
2072 if (dev->info->alt >= 0) {
2073 int res;
2074
2075 if (intf->altsetting->desc.bInterfaceNumber) {
2076 mutex_unlock(&dev->lock);
2077 return -ENODEV;
2078 }
2079 res = set_altsetting(dev, dev->info->alt);
2080 if (res) {
2081 dev_err(&intf->dev,
2082 "set altsetting to %d failed, %d\n",
2083 dev->info->alt, res);
2084 mutex_unlock(&dev->lock);
2085 return res;
2086 }
2087 }
2088
2089 /*
2090 * Just a bunch of test cases that every HCD is expected to handle.
2091 *
2092 * Some may need specific firmware, though it'd be good to have
2093 * one firmware image to handle all the test cases.
2094 *
2095 * FIXME add more tests! cancel requests, verify the data, control
2096 * queueing, concurrent read+write threads, and so on.
2097 */
2098 do_gettimeofday(&start);
2099 switch (param->test_num) {
2100
2101 case 0:
2102 dev_info(&intf->dev, "TEST 0: NOP\n");
2103 retval = 0;
2104 break;
2105
2106 /* Simple non-queued bulk I/O tests */
2107 case 1:
2108 if (dev->out_pipe == 0)
2109 break;
2110 dev_info(&intf->dev,
2111 "TEST 1: write %d bytes %u times\n",
2112 param->length, param->iterations);
2113 urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0);
2114 if (!urb) {
2115 retval = -ENOMEM;
2116 break;
2117 }
2118 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2119 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1");
2120 simple_free_urb(urb);
2121 break;
2122 case 2:
2123 if (dev->in_pipe == 0)
2124 break;
2125 dev_info(&intf->dev,
2126 "TEST 2: read %d bytes %u times\n",
2127 param->length, param->iterations);
2128 urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0);
2129 if (!urb) {
2130 retval = -ENOMEM;
2131 break;
2132 }
2133 /* FIRMWARE: bulk source (maybe generates short writes) */
2134 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2");
2135 simple_free_urb(urb);
2136 break;
2137 case 3:
2138 if (dev->out_pipe == 0 || param->vary == 0)
2139 break;
2140 dev_info(&intf->dev,
2141 "TEST 3: write/%d 0..%d bytes %u times\n",
2142 param->vary, param->length, param->iterations);
2143 urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0);
2144 if (!urb) {
2145 retval = -ENOMEM;
2146 break;
2147 }
2148 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2149 retval = simple_io(dev, urb, param->iterations, param->vary,
2150 0, "test3");
2151 simple_free_urb(urb);
2152 break;
2153 case 4:
2154 if (dev->in_pipe == 0 || param->vary == 0)
2155 break;
2156 dev_info(&intf->dev,
2157 "TEST 4: read/%d 0..%d bytes %u times\n",
2158 param->vary, param->length, param->iterations);
2159 urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0);
2160 if (!urb) {
2161 retval = -ENOMEM;
2162 break;
2163 }
2164 /* FIRMWARE: bulk source (maybe generates short writes) */
2165 retval = simple_io(dev, urb, param->iterations, param->vary,
2166 0, "test4");
2167 simple_free_urb(urb);
2168 break;
2169
2170 /* Queued bulk I/O tests */
2171 case 5:
2172 if (dev->out_pipe == 0 || param->sglen == 0)
2173 break;
2174 dev_info(&intf->dev,
2175 "TEST 5: write %d sglists %d entries of %d bytes\n",
2176 param->iterations,
2177 param->sglen, param->length);
2178 sg = alloc_sglist(param->sglen, param->length, 0);
2179 if (!sg) {
2180 retval = -ENOMEM;
2181 break;
2182 }
2183 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2184 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2185 &req, sg, param->sglen);
2186 free_sglist(sg, param->sglen);
2187 break;
2188
2189 case 6:
2190 if (dev->in_pipe == 0 || param->sglen == 0)
2191 break;
2192 dev_info(&intf->dev,
2193 "TEST 6: read %d sglists %d entries of %d bytes\n",
2194 param->iterations,
2195 param->sglen, param->length);
2196 sg = alloc_sglist(param->sglen, param->length, 0);
2197 if (!sg) {
2198 retval = -ENOMEM;
2199 break;
2200 }
2201 /* FIRMWARE: bulk source (maybe generates short writes) */
2202 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2203 &req, sg, param->sglen);
2204 free_sglist(sg, param->sglen);
2205 break;
2206 case 7:
2207 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0)
2208 break;
2209 dev_info(&intf->dev,
2210 "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n",
2211 param->vary, param->iterations,
2212 param->sglen, param->length);
2213 sg = alloc_sglist(param->sglen, param->length, param->vary);
2214 if (!sg) {
2215 retval = -ENOMEM;
2216 break;
2217 }
2218 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2219 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2220 &req, sg, param->sglen);
2221 free_sglist(sg, param->sglen);
2222 break;
2223 case 8:
2224 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0)
2225 break;
2226 dev_info(&intf->dev,
2227 "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n",
2228 param->vary, param->iterations,
2229 param->sglen, param->length);
2230 sg = alloc_sglist(param->sglen, param->length, param->vary);
2231 if (!sg) {
2232 retval = -ENOMEM;
2233 break;
2234 }
2235 /* FIRMWARE: bulk source (maybe generates short writes) */
2236 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2237 &req, sg, param->sglen);
2238 free_sglist(sg, param->sglen);
2239 break;
2240
2241 /* non-queued sanity tests for control (chapter 9 subset) */
2242 case 9:
2243 retval = 0;
2244 dev_info(&intf->dev,
2245 "TEST 9: ch9 (subset) control tests, %d times\n",
2246 param->iterations);
2247 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2248 retval = ch9_postconfig(dev);
2249 if (retval)
2250 dev_err(&intf->dev, "ch9 subset failed, "
2251 "iterations left %d\n", i);
2252 break;
2253
2254 /* queued control messaging */
2255 case 10:
2256 retval = 0;
2257 dev_info(&intf->dev,
2258 "TEST 10: queue %d control calls, %d times\n",
2259 param->sglen,
2260 param->iterations);
2261 retval = test_ctrl_queue(dev, param);
2262 break;
2263
2264 /* simple non-queued unlinks (ring with one urb) */
2265 case 11:
2266 if (dev->in_pipe == 0 || !param->length)
2267 break;
2268 retval = 0;
2269 dev_info(&intf->dev, "TEST 11: unlink %d reads of %d\n",
2270 param->iterations, param->length);
2271 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2272 retval = unlink_simple(dev, dev->in_pipe,
2273 param->length);
2274 if (retval)
2275 dev_err(&intf->dev, "unlink reads failed %d, "
2276 "iterations left %d\n", retval, i);
2277 break;
2278 case 12:
2279 if (dev->out_pipe == 0 || !param->length)
2280 break;
2281 retval = 0;
2282 dev_info(&intf->dev, "TEST 12: unlink %d writes of %d\n",
2283 param->iterations, param->length);
2284 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2285 retval = unlink_simple(dev, dev->out_pipe,
2286 param->length);
2287 if (retval)
2288 dev_err(&intf->dev, "unlink writes failed %d, "
2289 "iterations left %d\n", retval, i);
2290 break;
2291
2292 /* ep halt tests */
2293 case 13:
2294 if (dev->out_pipe == 0 && dev->in_pipe == 0)
2295 break;
2296 retval = 0;
2297 dev_info(&intf->dev, "TEST 13: set/clear %d halts\n",
2298 param->iterations);
2299 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2300 retval = halt_simple(dev);
2301
2302 if (retval)
2303 ERROR(dev, "halts failed, iterations left %d\n", i);
2304 break;
2305
2306 /* control write tests */
2307 case 14:
2308 if (!dev->info->ctrl_out)
2309 break;
2310 dev_info(&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n",
2311 param->iterations,
2312 realworld ? 1 : 0, param->length,
2313 param->vary);
2314 retval = ctrl_out(dev, param->iterations,
2315 param->length, param->vary, 0);
2316 break;
2317
2318 /* iso write tests */
2319 case 15:
2320 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2321 break;
2322 dev_info(&intf->dev,
2323 "TEST 15: write %d iso, %d entries of %d bytes\n",
2324 param->iterations,
2325 param->sglen, param->length);
2326 /* FIRMWARE: iso sink */
2327 retval = test_iso_queue(dev, param,
2328 dev->out_iso_pipe, dev->iso_out, 0);
2329 break;
2330
2331 /* iso read tests */
2332 case 16:
2333 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2334 break;
2335 dev_info(&intf->dev,
2336 "TEST 16: read %d iso, %d entries of %d bytes\n",
2337 param->iterations,
2338 param->sglen, param->length);
2339 /* FIRMWARE: iso source */
2340 retval = test_iso_queue(dev, param,
2341 dev->in_iso_pipe, dev->iso_in, 0);
2342 break;
2343
2344 /* FIXME scatterlist cancel (needs helper thread) */
2345
2346 /* Tests for bulk I/O using DMA mapping by core and odd address */
2347 case 17:
2348 if (dev->out_pipe == 0)
2349 break;
2350 dev_info(&intf->dev,
2351 "TEST 17: write odd addr %d bytes %u times core map\n",
2352 param->length, param->iterations);
2353
2354 retval = test_unaligned_bulk(
2355 dev, dev->out_pipe,
2356 param->length, param->iterations,
2357 0, "test17");
2358 break;
2359
2360 case 18:
2361 if (dev->in_pipe == 0)
2362 break;
2363 dev_info(&intf->dev,
2364 "TEST 18: read odd addr %d bytes %u times core map\n",
2365 param->length, param->iterations);
2366
2367 retval = test_unaligned_bulk(
2368 dev, dev->in_pipe,
2369 param->length, param->iterations,
2370 0, "test18");
2371 break;
2372
2373 /* Tests for bulk I/O using premapped coherent buffer and odd address */
2374 case 19:
2375 if (dev->out_pipe == 0)
2376 break;
2377 dev_info(&intf->dev,
2378 "TEST 19: write odd addr %d bytes %u times premapped\n",
2379 param->length, param->iterations);
2380
2381 retval = test_unaligned_bulk(
2382 dev, dev->out_pipe,
2383 param->length, param->iterations,
2384 URB_NO_TRANSFER_DMA_MAP, "test19");
2385 break;
2386
2387 case 20:
2388 if (dev->in_pipe == 0)
2389 break;
2390 dev_info(&intf->dev,
2391 "TEST 20: read odd addr %d bytes %u times premapped\n",
2392 param->length, param->iterations);
2393
2394 retval = test_unaligned_bulk(
2395 dev, dev->in_pipe,
2396 param->length, param->iterations,
2397 URB_NO_TRANSFER_DMA_MAP, "test20");
2398 break;
2399
2400 /* control write tests with unaligned buffer */
2401 case 21:
2402 if (!dev->info->ctrl_out)
2403 break;
2404 dev_info(&intf->dev,
2405 "TEST 21: %d ep0out odd addr, %d..%d vary %d\n",
2406 param->iterations,
2407 realworld ? 1 : 0, param->length,
2408 param->vary);
2409 retval = ctrl_out(dev, param->iterations,
2410 param->length, param->vary, 1);
2411 break;
2412
2413 /* unaligned iso tests */
2414 case 22:
2415 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2416 break;
2417 dev_info(&intf->dev,
2418 "TEST 22: write %d iso odd, %d entries of %d bytes\n",
2419 param->iterations,
2420 param->sglen, param->length);
2421 retval = test_iso_queue(dev, param,
2422 dev->out_iso_pipe, dev->iso_out, 1);
2423 break;
2424
2425 case 23:
2426 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2427 break;
2428 dev_info(&intf->dev,
2429 "TEST 23: read %d iso odd, %d entries of %d bytes\n",
2430 param->iterations,
2431 param->sglen, param->length);
2432 retval = test_iso_queue(dev, param,
2433 dev->in_iso_pipe, dev->iso_in, 1);
2434 break;
2435
2436 /* unlink URBs from a bulk-OUT queue */
2437 case 24:
2438 if (dev->out_pipe == 0 || !param->length || param->sglen < 4)
2439 break;
2440 retval = 0;
2441 dev_info(&intf->dev, "TEST 24: unlink from %d queues of "
2442 "%d %d-byte writes\n",
2443 param->iterations, param->sglen, param->length);
2444 for (i = param->iterations; retval == 0 && i > 0; --i) {
2445 retval = unlink_queued(dev, dev->out_pipe,
2446 param->sglen, param->length);
2447 if (retval) {
2448 dev_err(&intf->dev,
2449 "unlink queued writes failed %d, "
2450 "iterations left %d\n", retval, i);
2451 break;
2452 }
2453 }
2454 break;
2455
2456 /* Simple non-queued interrupt I/O tests */
2457 case 25:
2458 if (dev->out_int_pipe == 0)
2459 break;
2460 dev_info(&intf->dev,
2461 "TEST 25: write %d bytes %u times\n",
2462 param->length, param->iterations);
2463 urb = simple_alloc_urb(udev, dev->out_int_pipe, param->length,
2464 dev->int_out->bInterval);
2465 if (!urb) {
2466 retval = -ENOMEM;
2467 break;
2468 }
2469 /* FIRMWARE: interrupt sink (maybe accepts short writes) */
2470 retval = simple_io(dev, urb, param->iterations, 0, 0, "test25");
2471 simple_free_urb(urb);
2472 break;
2473 case 26:
2474 if (dev->in_int_pipe == 0)
2475 break;
2476 dev_info(&intf->dev,
2477 "TEST 26: read %d bytes %u times\n",
2478 param->length, param->iterations);
2479 urb = simple_alloc_urb(udev, dev->in_int_pipe, param->length,
2480 dev->int_in->bInterval);
2481 if (!urb) {
2482 retval = -ENOMEM;
2483 break;
2484 }
2485 /* FIRMWARE: interrupt source (maybe generates short writes) */
2486 retval = simple_io(dev, urb, param->iterations, 0, 0, "test26");
2487 simple_free_urb(urb);
2488 break;
2489 }
2490 do_gettimeofday(&param->duration);
2491 param->duration.tv_sec -= start.tv_sec;
2492 param->duration.tv_usec -= start.tv_usec;
2493 if (param->duration.tv_usec < 0) {
2494 param->duration.tv_usec += 1000 * 1000;
2495 param->duration.tv_sec -= 1;
2496 }
2497 mutex_unlock(&dev->lock);
2498 return retval;
2499 }
2500
2501 /*-------------------------------------------------------------------------*/
2502
2503 static unsigned force_interrupt;
2504 module_param(force_interrupt, uint, 0);
2505 MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt");
2506
2507 #ifdef GENERIC
2508 static unsigned short vendor;
2509 module_param(vendor, ushort, 0);
2510 MODULE_PARM_DESC(vendor, "vendor code (from usb-if)");
2511
2512 static unsigned short product;
2513 module_param(product, ushort, 0);
2514 MODULE_PARM_DESC(product, "product code (from vendor)");
2515 #endif
2516
2517 static int
2518 usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
2519 {
2520 struct usb_device *udev;
2521 struct usbtest_dev *dev;
2522 struct usbtest_info *info;
2523 char *rtest, *wtest;
2524 char *irtest, *iwtest;
2525 char *intrtest, *intwtest;
2526
2527 udev = interface_to_usbdev(intf);
2528
2529 #ifdef GENERIC
2530 /* specify devices by module parameters? */
2531 if (id->match_flags == 0) {
2532 /* vendor match required, product match optional */
2533 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor)
2534 return -ENODEV;
2535 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product)
2536 return -ENODEV;
2537 dev_info(&intf->dev, "matched module params, "
2538 "vend=0x%04x prod=0x%04x\n",
2539 le16_to_cpu(udev->descriptor.idVendor),
2540 le16_to_cpu(udev->descriptor.idProduct));
2541 }
2542 #endif
2543
2544 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2545 if (!dev)
2546 return -ENOMEM;
2547 info = (struct usbtest_info *) id->driver_info;
2548 dev->info = info;
2549 mutex_init(&dev->lock);
2550
2551 dev->intf = intf;
2552
2553 /* cacheline-aligned scratch for i/o */
2554 dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL);
2555 if (dev->buf == NULL) {
2556 kfree(dev);
2557 return -ENOMEM;
2558 }
2559
2560 /* NOTE this doesn't yet test the handful of difference that are
2561 * visible with high speed interrupts: bigger maxpacket (1K) and
2562 * "high bandwidth" modes (up to 3 packets/uframe).
2563 */
2564 rtest = wtest = "";
2565 irtest = iwtest = "";
2566 intrtest = intwtest = "";
2567 if (force_interrupt || udev->speed == USB_SPEED_LOW) {
2568 if (info->ep_in) {
2569 dev->in_pipe = usb_rcvintpipe(udev, info->ep_in);
2570 rtest = " intr-in";
2571 }
2572 if (info->ep_out) {
2573 dev->out_pipe = usb_sndintpipe(udev, info->ep_out);
2574 wtest = " intr-out";
2575 }
2576 } else {
2577 if (override_alt >= 0 || info->autoconf) {
2578 int status;
2579
2580 status = get_endpoints(dev, intf);
2581 if (status < 0) {
2582 WARNING(dev, "couldn't get endpoints, %d\n",
2583 status);
2584 kfree(dev->buf);
2585 kfree(dev);
2586 return status;
2587 }
2588 /* may find bulk or ISO pipes */
2589 } else {
2590 if (info->ep_in)
2591 dev->in_pipe = usb_rcvbulkpipe(udev,
2592 info->ep_in);
2593 if (info->ep_out)
2594 dev->out_pipe = usb_sndbulkpipe(udev,
2595 info->ep_out);
2596 }
2597 if (dev->in_pipe)
2598 rtest = " bulk-in";
2599 if (dev->out_pipe)
2600 wtest = " bulk-out";
2601 if (dev->in_iso_pipe)
2602 irtest = " iso-in";
2603 if (dev->out_iso_pipe)
2604 iwtest = " iso-out";
2605 if (dev->in_int_pipe)
2606 intrtest = " int-in";
2607 if (dev->out_int_pipe)
2608 intwtest = " int-out";
2609 }
2610
2611 usb_set_intfdata(intf, dev);
2612 dev_info(&intf->dev, "%s\n", info->name);
2613 dev_info(&intf->dev, "%s {control%s%s%s%s%s%s%s} tests%s\n",
2614 usb_speed_string(udev->speed),
2615 info->ctrl_out ? " in/out" : "",
2616 rtest, wtest,
2617 irtest, iwtest,
2618 intrtest, intwtest,
2619 info->alt >= 0 ? " (+alt)" : "");
2620 return 0;
2621 }
2622
2623 static int usbtest_suspend(struct usb_interface *intf, pm_message_t message)
2624 {
2625 return 0;
2626 }
2627
2628 static int usbtest_resume(struct usb_interface *intf)
2629 {
2630 return 0;
2631 }
2632
2633
2634 static void usbtest_disconnect(struct usb_interface *intf)
2635 {
2636 struct usbtest_dev *dev = usb_get_intfdata(intf);
2637
2638 usb_set_intfdata(intf, NULL);
2639 dev_dbg(&intf->dev, "disconnect\n");
2640 kfree(dev);
2641 }
2642
2643 /* Basic testing only needs a device that can source or sink bulk traffic.
2644 * Any device can test control transfers (default with GENERIC binding).
2645 *
2646 * Several entries work with the default EP0 implementation that's built
2647 * into EZ-USB chips. There's a default vendor ID which can be overridden
2648 * by (very) small config EEPROMS, but otherwise all these devices act
2649 * identically until firmware is loaded: only EP0 works. It turns out
2650 * to be easy to make other endpoints work, without modifying that EP0
2651 * behavior. For now, we expect that kind of firmware.
2652 */
2653
2654 /* an21xx or fx versions of ez-usb */
2655 static struct usbtest_info ez1_info = {
2656 .name = "EZ-USB device",
2657 .ep_in = 2,
2658 .ep_out = 2,
2659 .alt = 1,
2660 };
2661
2662 /* fx2 version of ez-usb */
2663 static struct usbtest_info ez2_info = {
2664 .name = "FX2 device",
2665 .ep_in = 6,
2666 .ep_out = 2,
2667 .alt = 1,
2668 };
2669
2670 /* ezusb family device with dedicated usb test firmware,
2671 */
2672 static struct usbtest_info fw_info = {
2673 .name = "usb test device",
2674 .ep_in = 2,
2675 .ep_out = 2,
2676 .alt = 1,
2677 .autoconf = 1, /* iso and ctrl_out need autoconf */
2678 .ctrl_out = 1,
2679 .iso = 1, /* iso_ep's are #8 in/out */
2680 };
2681
2682 /* peripheral running Linux and 'zero.c' test firmware, or
2683 * its user-mode cousin. different versions of this use
2684 * different hardware with the same vendor/product codes.
2685 * host side MUST rely on the endpoint descriptors.
2686 */
2687 static struct usbtest_info gz_info = {
2688 .name = "Linux gadget zero",
2689 .autoconf = 1,
2690 .ctrl_out = 1,
2691 .iso = 1,
2692 .intr = 1,
2693 .alt = 0,
2694 };
2695
2696 static struct usbtest_info um_info = {
2697 .name = "Linux user mode test driver",
2698 .autoconf = 1,
2699 .alt = -1,
2700 };
2701
2702 static struct usbtest_info um2_info = {
2703 .name = "Linux user mode ISO test driver",
2704 .autoconf = 1,
2705 .iso = 1,
2706 .alt = -1,
2707 };
2708
2709 #ifdef IBOT2
2710 /* this is a nice source of high speed bulk data;
2711 * uses an FX2, with firmware provided in the device
2712 */
2713 static struct usbtest_info ibot2_info = {
2714 .name = "iBOT2 webcam",
2715 .ep_in = 2,
2716 .alt = -1,
2717 };
2718 #endif
2719
2720 #ifdef GENERIC
2721 /* we can use any device to test control traffic */
2722 static struct usbtest_info generic_info = {
2723 .name = "Generic USB device",
2724 .alt = -1,
2725 };
2726 #endif
2727
2728
2729 static const struct usb_device_id id_table[] = {
2730
2731 /*-------------------------------------------------------------*/
2732
2733 /* EZ-USB devices which download firmware to replace (or in our
2734 * case augment) the default device implementation.
2735 */
2736
2737 /* generic EZ-USB FX controller */
2738 { USB_DEVICE(0x0547, 0x2235),
2739 .driver_info = (unsigned long) &ez1_info,
2740 },
2741
2742 /* CY3671 development board with EZ-USB FX */
2743 { USB_DEVICE(0x0547, 0x0080),
2744 .driver_info = (unsigned long) &ez1_info,
2745 },
2746
2747 /* generic EZ-USB FX2 controller (or development board) */
2748 { USB_DEVICE(0x04b4, 0x8613),
2749 .driver_info = (unsigned long) &ez2_info,
2750 },
2751
2752 /* re-enumerated usb test device firmware */
2753 { USB_DEVICE(0xfff0, 0xfff0),
2754 .driver_info = (unsigned long) &fw_info,
2755 },
2756
2757 /* "Gadget Zero" firmware runs under Linux */
2758 { USB_DEVICE(0x0525, 0xa4a0),
2759 .driver_info = (unsigned long) &gz_info,
2760 },
2761
2762 /* so does a user-mode variant */
2763 { USB_DEVICE(0x0525, 0xa4a4),
2764 .driver_info = (unsigned long) &um_info,
2765 },
2766
2767 /* ... and a user-mode variant that talks iso */
2768 { USB_DEVICE(0x0525, 0xa4a3),
2769 .driver_info = (unsigned long) &um2_info,
2770 },
2771
2772 #ifdef KEYSPAN_19Qi
2773 /* Keyspan 19qi uses an21xx (original EZ-USB) */
2774 /* this does not coexist with the real Keyspan 19qi driver! */
2775 { USB_DEVICE(0x06cd, 0x010b),
2776 .driver_info = (unsigned long) &ez1_info,
2777 },
2778 #endif
2779
2780 /*-------------------------------------------------------------*/
2781
2782 #ifdef IBOT2
2783 /* iBOT2 makes a nice source of high speed bulk-in data */
2784 /* this does not coexist with a real iBOT2 driver! */
2785 { USB_DEVICE(0x0b62, 0x0059),
2786 .driver_info = (unsigned long) &ibot2_info,
2787 },
2788 #endif
2789
2790 /*-------------------------------------------------------------*/
2791
2792 #ifdef GENERIC
2793 /* module params can specify devices to use for control tests */
2794 { .driver_info = (unsigned long) &generic_info, },
2795 #endif
2796
2797 /*-------------------------------------------------------------*/
2798
2799 { }
2800 };
2801 MODULE_DEVICE_TABLE(usb, id_table);
2802
2803 static struct usb_driver usbtest_driver = {
2804 .name = "usbtest",
2805 .id_table = id_table,
2806 .probe = usbtest_probe,
2807 .unlocked_ioctl = usbtest_ioctl,
2808 .disconnect = usbtest_disconnect,
2809 .suspend = usbtest_suspend,
2810 .resume = usbtest_resume,
2811 };
2812
2813 /*-------------------------------------------------------------------------*/
2814
2815 static int __init usbtest_init(void)
2816 {
2817 #ifdef GENERIC
2818 if (vendor)
2819 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product);
2820 #endif
2821 return usb_register(&usbtest_driver);
2822 }
2823 module_init(usbtest_init);
2824
2825 static void __exit usbtest_exit(void)
2826 {
2827 usb_deregister(&usbtest_driver);
2828 }
2829 module_exit(usbtest_exit);
2830
2831 MODULE_DESCRIPTION("USB Core/HCD Testing Driver");
2832 MODULE_LICENSE("GPL");
2833
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