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Merge remote-tracking branch 'selinux/next'
[deliverable/linux.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 static void complicated_callback(struct urb *urb);
21
22 /*-------------------------------------------------------------------------*/
23
24 /* FIXME make these public somewhere; usbdevfs.h? */
25
26 /* Parameter for usbtest driver. */
27 struct usbtest_param_32 {
28 /* inputs */
29 __u32 test_num; /* 0..(TEST_CASES-1) */
30 __u32 iterations;
31 __u32 length;
32 __u32 vary;
33 __u32 sglen;
34
35 /* outputs */
36 __s32 duration_sec;
37 __s32 duration_usec;
38 };
39
40 /*
41 * Compat parameter to the usbtest driver.
42 * This supports older user space binaries compiled with 64 bit compiler.
43 */
44 struct usbtest_param_64 {
45 /* inputs */
46 __u32 test_num; /* 0..(TEST_CASES-1) */
47 __u32 iterations;
48 __u32 length;
49 __u32 vary;
50 __u32 sglen;
51
52 /* outputs */
53 __s64 duration_sec;
54 __s64 duration_usec;
55 };
56
57 /* IOCTL interface to the driver. */
58 #define USBTEST_REQUEST_32 _IOWR('U', 100, struct usbtest_param_32)
59 /* COMPAT IOCTL interface to the driver. */
60 #define USBTEST_REQUEST_64 _IOWR('U', 100, struct usbtest_param_64)
61
62 /*-------------------------------------------------------------------------*/
63
64 #define GENERIC /* let probe() bind using module params */
65
66 /* Some devices that can be used for testing will have "real" drivers.
67 * Entries for those need to be enabled here by hand, after disabling
68 * that "real" driver.
69 */
70 //#define IBOT2 /* grab iBOT2 webcams */
71 //#define KEYSPAN_19Qi /* grab un-renumerated serial adapter */
72
73 /*-------------------------------------------------------------------------*/
74
75 struct usbtest_info {
76 const char *name;
77 u8 ep_in; /* bulk/intr source */
78 u8 ep_out; /* bulk/intr sink */
79 unsigned autoconf:1;
80 unsigned ctrl_out:1;
81 unsigned iso:1; /* try iso in/out */
82 unsigned intr:1; /* try interrupt in/out */
83 int alt;
84 };
85
86 /* this is accessed only through usbfs ioctl calls.
87 * one ioctl to issue a test ... one lock per device.
88 * tests create other threads if they need them.
89 * urbs and buffers are allocated dynamically,
90 * and data generated deterministically.
91 */
92 struct usbtest_dev {
93 struct usb_interface *intf;
94 struct usbtest_info *info;
95 int in_pipe;
96 int out_pipe;
97 int in_iso_pipe;
98 int out_iso_pipe;
99 int in_int_pipe;
100 int out_int_pipe;
101 struct usb_endpoint_descriptor *iso_in, *iso_out;
102 struct usb_endpoint_descriptor *int_in, *int_out;
103 struct mutex lock;
104
105 #define TBUF_SIZE 256
106 u8 *buf;
107 };
108
109 static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test)
110 {
111 return interface_to_usbdev(test->intf);
112 }
113
114 /* set up all urbs so they can be used with either bulk or interrupt */
115 #define INTERRUPT_RATE 1 /* msec/transfer */
116
117 #define ERROR(tdev, fmt, args...) \
118 dev_err(&(tdev)->intf->dev , fmt , ## args)
119 #define WARNING(tdev, fmt, args...) \
120 dev_warn(&(tdev)->intf->dev , fmt , ## args)
121
122 #define GUARD_BYTE 0xA5
123 #define MAX_SGLEN 128
124
125 /*-------------------------------------------------------------------------*/
126
127 static int
128 get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf)
129 {
130 int tmp;
131 struct usb_host_interface *alt;
132 struct usb_host_endpoint *in, *out;
133 struct usb_host_endpoint *iso_in, *iso_out;
134 struct usb_host_endpoint *int_in, *int_out;
135 struct usb_device *udev;
136
137 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
138 unsigned ep;
139
140 in = out = NULL;
141 iso_in = iso_out = NULL;
142 int_in = int_out = NULL;
143 alt = intf->altsetting + tmp;
144
145 if (override_alt >= 0 &&
146 override_alt != alt->desc.bAlternateSetting)
147 continue;
148
149 /* take the first altsetting with in-bulk + out-bulk;
150 * ignore other endpoints and altsettings.
151 */
152 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
153 struct usb_host_endpoint *e;
154
155 e = alt->endpoint + ep;
156 switch (usb_endpoint_type(&e->desc)) {
157 case USB_ENDPOINT_XFER_BULK:
158 break;
159 case USB_ENDPOINT_XFER_INT:
160 if (dev->info->intr)
161 goto try_intr;
162 case USB_ENDPOINT_XFER_ISOC:
163 if (dev->info->iso)
164 goto try_iso;
165 /* FALLTHROUGH */
166 default:
167 continue;
168 }
169 if (usb_endpoint_dir_in(&e->desc)) {
170 if (!in)
171 in = e;
172 } else {
173 if (!out)
174 out = e;
175 }
176 continue;
177 try_intr:
178 if (usb_endpoint_dir_in(&e->desc)) {
179 if (!int_in)
180 int_in = e;
181 } else {
182 if (!int_out)
183 int_out = e;
184 }
185 continue;
186 try_iso:
187 if (usb_endpoint_dir_in(&e->desc)) {
188 if (!iso_in)
189 iso_in = e;
190 } else {
191 if (!iso_out)
192 iso_out = e;
193 }
194 }
195 if ((in && out) || iso_in || iso_out || int_in || int_out)
196 goto found;
197 }
198 return -EINVAL;
199
200 found:
201 udev = testdev_to_usbdev(dev);
202 dev->info->alt = alt->desc.bAlternateSetting;
203 if (alt->desc.bAlternateSetting != 0) {
204 tmp = usb_set_interface(udev,
205 alt->desc.bInterfaceNumber,
206 alt->desc.bAlternateSetting);
207 if (tmp < 0)
208 return tmp;
209 }
210
211 if (in) {
212 dev->in_pipe = usb_rcvbulkpipe(udev,
213 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
214 dev->out_pipe = usb_sndbulkpipe(udev,
215 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
216 }
217 if (iso_in) {
218 dev->iso_in = &iso_in->desc;
219 dev->in_iso_pipe = usb_rcvisocpipe(udev,
220 iso_in->desc.bEndpointAddress
221 & USB_ENDPOINT_NUMBER_MASK);
222 }
223
224 if (iso_out) {
225 dev->iso_out = &iso_out->desc;
226 dev->out_iso_pipe = usb_sndisocpipe(udev,
227 iso_out->desc.bEndpointAddress
228 & USB_ENDPOINT_NUMBER_MASK);
229 }
230
231 if (int_in) {
232 dev->int_in = &int_in->desc;
233 dev->in_int_pipe = usb_rcvintpipe(udev,
234 int_in->desc.bEndpointAddress
235 & USB_ENDPOINT_NUMBER_MASK);
236 }
237
238 if (int_out) {
239 dev->int_out = &int_out->desc;
240 dev->out_int_pipe = usb_sndintpipe(udev,
241 int_out->desc.bEndpointAddress
242 & USB_ENDPOINT_NUMBER_MASK);
243 }
244 return 0;
245 }
246
247 /*-------------------------------------------------------------------------*/
248
249 /* Support for testing basic non-queued I/O streams.
250 *
251 * These just package urbs as requests that can be easily canceled.
252 * Each urb's data buffer is dynamically allocated; callers can fill
253 * them with non-zero test data (or test for it) when appropriate.
254 */
255
256 static void simple_callback(struct urb *urb)
257 {
258 complete(urb->context);
259 }
260
261 static struct urb *usbtest_alloc_urb(
262 struct usb_device *udev,
263 int pipe,
264 unsigned long bytes,
265 unsigned transfer_flags,
266 unsigned offset,
267 u8 bInterval,
268 usb_complete_t complete_fn)
269 {
270 struct urb *urb;
271
272 urb = usb_alloc_urb(0, GFP_KERNEL);
273 if (!urb)
274 return urb;
275
276 if (bInterval)
277 usb_fill_int_urb(urb, udev, pipe, NULL, bytes, complete_fn,
278 NULL, bInterval);
279 else
280 usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, complete_fn,
281 NULL);
282
283 urb->interval = (udev->speed == USB_SPEED_HIGH)
284 ? (INTERRUPT_RATE << 3)
285 : INTERRUPT_RATE;
286 urb->transfer_flags = transfer_flags;
287 if (usb_pipein(pipe))
288 urb->transfer_flags |= URB_SHORT_NOT_OK;
289
290 if ((bytes + offset) == 0)
291 return urb;
292
293 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
294 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
295 GFP_KERNEL, &urb->transfer_dma);
296 else
297 urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL);
298
299 if (!urb->transfer_buffer) {
300 usb_free_urb(urb);
301 return NULL;
302 }
303
304 /* To test unaligned transfers add an offset and fill the
305 unused memory with a guard value */
306 if (offset) {
307 memset(urb->transfer_buffer, GUARD_BYTE, offset);
308 urb->transfer_buffer += offset;
309 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
310 urb->transfer_dma += offset;
311 }
312
313 /* For inbound transfers use guard byte so that test fails if
314 data not correctly copied */
315 memset(urb->transfer_buffer,
316 usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
317 bytes);
318 return urb;
319 }
320
321 static struct urb *simple_alloc_urb(
322 struct usb_device *udev,
323 int pipe,
324 unsigned long bytes,
325 u8 bInterval)
326 {
327 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0,
328 bInterval, simple_callback);
329 }
330
331 static struct urb *complicated_alloc_urb(
332 struct usb_device *udev,
333 int pipe,
334 unsigned long bytes,
335 u8 bInterval)
336 {
337 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0,
338 bInterval, complicated_callback);
339 }
340
341 static unsigned pattern;
342 static unsigned mod_pattern;
343 module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR);
344 MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)");
345
346 static unsigned get_maxpacket(struct usb_device *udev, int pipe)
347 {
348 struct usb_host_endpoint *ep;
349
350 ep = usb_pipe_endpoint(udev, pipe);
351 return le16_to_cpup(&ep->desc.wMaxPacketSize);
352 }
353
354 static void simple_fill_buf(struct urb *urb)
355 {
356 unsigned i;
357 u8 *buf = urb->transfer_buffer;
358 unsigned len = urb->transfer_buffer_length;
359 unsigned maxpacket;
360
361 switch (pattern) {
362 default:
363 /* FALLTHROUGH */
364 case 0:
365 memset(buf, 0, len);
366 break;
367 case 1: /* mod63 */
368 maxpacket = get_maxpacket(urb->dev, urb->pipe);
369 for (i = 0; i < len; i++)
370 *buf++ = (u8) ((i % maxpacket) % 63);
371 break;
372 }
373 }
374
375 static inline unsigned long buffer_offset(void *buf)
376 {
377 return (unsigned long)buf & (ARCH_KMALLOC_MINALIGN - 1);
378 }
379
380 static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb)
381 {
382 u8 *buf = urb->transfer_buffer;
383 u8 *guard = buf - buffer_offset(buf);
384 unsigned i;
385
386 for (i = 0; guard < buf; i++, guard++) {
387 if (*guard != GUARD_BYTE) {
388 ERROR(tdev, "guard byte[%d] %d (not %d)\n",
389 i, *guard, GUARD_BYTE);
390 return -EINVAL;
391 }
392 }
393 return 0;
394 }
395
396 static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb)
397 {
398 unsigned i;
399 u8 expected;
400 u8 *buf = urb->transfer_buffer;
401 unsigned len = urb->actual_length;
402 unsigned maxpacket = get_maxpacket(urb->dev, urb->pipe);
403
404 int ret = check_guard_bytes(tdev, urb);
405 if (ret)
406 return ret;
407
408 for (i = 0; i < len; i++, buf++) {
409 switch (pattern) {
410 /* all-zeroes has no synchronization issues */
411 case 0:
412 expected = 0;
413 break;
414 /* mod63 stays in sync with short-terminated transfers,
415 * or otherwise when host and gadget agree on how large
416 * each usb transfer request should be. resync is done
417 * with set_interface or set_config.
418 */
419 case 1: /* mod63 */
420 expected = (i % maxpacket) % 63;
421 break;
422 /* always fail unsupported patterns */
423 default:
424 expected = !*buf;
425 break;
426 }
427 if (*buf == expected)
428 continue;
429 ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected);
430 return -EINVAL;
431 }
432 return 0;
433 }
434
435 static void simple_free_urb(struct urb *urb)
436 {
437 unsigned long offset = buffer_offset(urb->transfer_buffer);
438
439 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
440 usb_free_coherent(
441 urb->dev,
442 urb->transfer_buffer_length + offset,
443 urb->transfer_buffer - offset,
444 urb->transfer_dma - offset);
445 else
446 kfree(urb->transfer_buffer - offset);
447 usb_free_urb(urb);
448 }
449
450 static int simple_io(
451 struct usbtest_dev *tdev,
452 struct urb *urb,
453 int iterations,
454 int vary,
455 int expected,
456 const char *label
457 )
458 {
459 struct usb_device *udev = urb->dev;
460 int max = urb->transfer_buffer_length;
461 struct completion completion;
462 int retval = 0;
463 unsigned long expire;
464
465 urb->context = &completion;
466 while (retval == 0 && iterations-- > 0) {
467 init_completion(&completion);
468 if (usb_pipeout(urb->pipe)) {
469 simple_fill_buf(urb);
470 urb->transfer_flags |= URB_ZERO_PACKET;
471 }
472 retval = usb_submit_urb(urb, GFP_KERNEL);
473 if (retval != 0)
474 break;
475
476 expire = msecs_to_jiffies(SIMPLE_IO_TIMEOUT);
477 if (!wait_for_completion_timeout(&completion, expire)) {
478 usb_kill_urb(urb);
479 retval = (urb->status == -ENOENT ?
480 -ETIMEDOUT : urb->status);
481 } else {
482 retval = urb->status;
483 }
484
485 urb->dev = udev;
486 if (retval == 0 && usb_pipein(urb->pipe))
487 retval = simple_check_buf(tdev, urb);
488
489 if (vary) {
490 int len = urb->transfer_buffer_length;
491
492 len += vary;
493 len %= max;
494 if (len == 0)
495 len = (vary < max) ? vary : max;
496 urb->transfer_buffer_length = len;
497 }
498
499 /* FIXME if endpoint halted, clear halt (and log) */
500 }
501 urb->transfer_buffer_length = max;
502
503 if (expected != retval)
504 dev_err(&udev->dev,
505 "%s failed, iterations left %d, status %d (not %d)\n",
506 label, iterations, retval, expected);
507 return retval;
508 }
509
510
511 /*-------------------------------------------------------------------------*/
512
513 /* We use scatterlist primitives to test queued I/O.
514 * Yes, this also tests the scatterlist primitives.
515 */
516
517 static void free_sglist(struct scatterlist *sg, int nents)
518 {
519 unsigned i;
520
521 if (!sg)
522 return;
523 for (i = 0; i < nents; i++) {
524 if (!sg_page(&sg[i]))
525 continue;
526 kfree(sg_virt(&sg[i]));
527 }
528 kfree(sg);
529 }
530
531 static struct scatterlist *
532 alloc_sglist(int nents, int max, int vary, struct usbtest_dev *dev, int pipe)
533 {
534 struct scatterlist *sg;
535 unsigned int n_size = 0;
536 unsigned i;
537 unsigned size = max;
538 unsigned maxpacket =
539 get_maxpacket(interface_to_usbdev(dev->intf), pipe);
540
541 if (max == 0)
542 return NULL;
543
544 sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL);
545 if (!sg)
546 return NULL;
547 sg_init_table(sg, nents);
548
549 for (i = 0; i < nents; i++) {
550 char *buf;
551 unsigned j;
552
553 buf = kzalloc(size, GFP_KERNEL);
554 if (!buf) {
555 free_sglist(sg, i);
556 return NULL;
557 }
558
559 /* kmalloc pages are always physically contiguous! */
560 sg_set_buf(&sg[i], buf, size);
561
562 switch (pattern) {
563 case 0:
564 /* already zeroed */
565 break;
566 case 1:
567 for (j = 0; j < size; j++)
568 *buf++ = (u8) (((j + n_size) % maxpacket) % 63);
569 n_size += size;
570 break;
571 }
572
573 if (vary) {
574 size += vary;
575 size %= max;
576 if (size == 0)
577 size = (vary < max) ? vary : max;
578 }
579 }
580
581 return sg;
582 }
583
584 static void sg_timeout(unsigned long _req)
585 {
586 struct usb_sg_request *req = (struct usb_sg_request *) _req;
587
588 usb_sg_cancel(req);
589 }
590
591 static int perform_sglist(
592 struct usbtest_dev *tdev,
593 unsigned iterations,
594 int pipe,
595 struct usb_sg_request *req,
596 struct scatterlist *sg,
597 int nents
598 )
599 {
600 struct usb_device *udev = testdev_to_usbdev(tdev);
601 int retval = 0;
602 struct timer_list sg_timer;
603
604 setup_timer_on_stack(&sg_timer, sg_timeout, (unsigned long) req);
605
606 while (retval == 0 && iterations-- > 0) {
607 retval = usb_sg_init(req, udev, pipe,
608 (udev->speed == USB_SPEED_HIGH)
609 ? (INTERRUPT_RATE << 3)
610 : INTERRUPT_RATE,
611 sg, nents, 0, GFP_KERNEL);
612
613 if (retval)
614 break;
615 mod_timer(&sg_timer, jiffies +
616 msecs_to_jiffies(SIMPLE_IO_TIMEOUT));
617 usb_sg_wait(req);
618 if (!del_timer_sync(&sg_timer))
619 retval = -ETIMEDOUT;
620 else
621 retval = req->status;
622
623 /* FIXME check resulting data pattern */
624
625 /* FIXME if endpoint halted, clear halt (and log) */
626 }
627
628 /* FIXME for unlink or fault handling tests, don't report
629 * failure if retval is as we expected ...
630 */
631 if (retval)
632 ERROR(tdev, "perform_sglist failed, "
633 "iterations left %d, status %d\n",
634 iterations, retval);
635 return retval;
636 }
637
638
639 /*-------------------------------------------------------------------------*/
640
641 /* unqueued control message testing
642 *
643 * there's a nice set of device functional requirements in chapter 9 of the
644 * usb 2.0 spec, which we can apply to ANY device, even ones that don't use
645 * special test firmware.
646 *
647 * we know the device is configured (or suspended) by the time it's visible
648 * through usbfs. we can't change that, so we won't test enumeration (which
649 * worked 'well enough' to get here, this time), power management (ditto),
650 * or remote wakeup (which needs human interaction).
651 */
652
653 static unsigned realworld = 1;
654 module_param(realworld, uint, 0);
655 MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance");
656
657 static int get_altsetting(struct usbtest_dev *dev)
658 {
659 struct usb_interface *iface = dev->intf;
660 struct usb_device *udev = interface_to_usbdev(iface);
661 int retval;
662
663 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
664 USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE,
665 0, iface->altsetting[0].desc.bInterfaceNumber,
666 dev->buf, 1, USB_CTRL_GET_TIMEOUT);
667 switch (retval) {
668 case 1:
669 return dev->buf[0];
670 case 0:
671 retval = -ERANGE;
672 /* FALLTHROUGH */
673 default:
674 return retval;
675 }
676 }
677
678 static int set_altsetting(struct usbtest_dev *dev, int alternate)
679 {
680 struct usb_interface *iface = dev->intf;
681 struct usb_device *udev;
682
683 if (alternate < 0 || alternate >= 256)
684 return -EINVAL;
685
686 udev = interface_to_usbdev(iface);
687 return usb_set_interface(udev,
688 iface->altsetting[0].desc.bInterfaceNumber,
689 alternate);
690 }
691
692 static int is_good_config(struct usbtest_dev *tdev, int len)
693 {
694 struct usb_config_descriptor *config;
695
696 if (len < sizeof(*config))
697 return 0;
698 config = (struct usb_config_descriptor *) tdev->buf;
699
700 switch (config->bDescriptorType) {
701 case USB_DT_CONFIG:
702 case USB_DT_OTHER_SPEED_CONFIG:
703 if (config->bLength != 9) {
704 ERROR(tdev, "bogus config descriptor length\n");
705 return 0;
706 }
707 /* this bit 'must be 1' but often isn't */
708 if (!realworld && !(config->bmAttributes & 0x80)) {
709 ERROR(tdev, "high bit of config attributes not set\n");
710 return 0;
711 }
712 if (config->bmAttributes & 0x1f) { /* reserved == 0 */
713 ERROR(tdev, "reserved config bits set\n");
714 return 0;
715 }
716 break;
717 default:
718 return 0;
719 }
720
721 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */
722 return 1;
723 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */
724 return 1;
725 ERROR(tdev, "bogus config descriptor read size\n");
726 return 0;
727 }
728
729 static int is_good_ext(struct usbtest_dev *tdev, u8 *buf)
730 {
731 struct usb_ext_cap_descriptor *ext;
732 u32 attr;
733
734 ext = (struct usb_ext_cap_descriptor *) buf;
735
736 if (ext->bLength != USB_DT_USB_EXT_CAP_SIZE) {
737 ERROR(tdev, "bogus usb 2.0 extension descriptor length\n");
738 return 0;
739 }
740
741 attr = le32_to_cpu(ext->bmAttributes);
742 /* bits[1:15] is used and others are reserved */
743 if (attr & ~0xfffe) { /* reserved == 0 */
744 ERROR(tdev, "reserved bits set\n");
745 return 0;
746 }
747
748 return 1;
749 }
750
751 static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf)
752 {
753 struct usb_ss_cap_descriptor *ss;
754
755 ss = (struct usb_ss_cap_descriptor *) buf;
756
757 if (ss->bLength != USB_DT_USB_SS_CAP_SIZE) {
758 ERROR(tdev, "bogus superspeed device capability descriptor length\n");
759 return 0;
760 }
761
762 /*
763 * only bit[1] of bmAttributes is used for LTM and others are
764 * reserved
765 */
766 if (ss->bmAttributes & ~0x02) { /* reserved == 0 */
767 ERROR(tdev, "reserved bits set in bmAttributes\n");
768 return 0;
769 }
770
771 /* bits[0:3] of wSpeedSupported is used and others are reserved */
772 if (le16_to_cpu(ss->wSpeedSupported) & ~0x0f) { /* reserved == 0 */
773 ERROR(tdev, "reserved bits set in wSpeedSupported\n");
774 return 0;
775 }
776
777 return 1;
778 }
779
780 static int is_good_con_id(struct usbtest_dev *tdev, u8 *buf)
781 {
782 struct usb_ss_container_id_descriptor *con_id;
783
784 con_id = (struct usb_ss_container_id_descriptor *) buf;
785
786 if (con_id->bLength != USB_DT_USB_SS_CONTN_ID_SIZE) {
787 ERROR(tdev, "bogus container id descriptor length\n");
788 return 0;
789 }
790
791 if (con_id->bReserved) { /* reserved == 0 */
792 ERROR(tdev, "reserved bits set\n");
793 return 0;
794 }
795
796 return 1;
797 }
798
799 /* sanity test for standard requests working with usb_control_mesg() and some
800 * of the utility functions which use it.
801 *
802 * this doesn't test how endpoint halts behave or data toggles get set, since
803 * we won't do I/O to bulk/interrupt endpoints here (which is how to change
804 * halt or toggle). toggle testing is impractical without support from hcds.
805 *
806 * this avoids failing devices linux would normally work with, by not testing
807 * config/altsetting operations for devices that only support their defaults.
808 * such devices rarely support those needless operations.
809 *
810 * NOTE that since this is a sanity test, it's not examining boundary cases
811 * to see if usbcore, hcd, and device all behave right. such testing would
812 * involve varied read sizes and other operation sequences.
813 */
814 static int ch9_postconfig(struct usbtest_dev *dev)
815 {
816 struct usb_interface *iface = dev->intf;
817 struct usb_device *udev = interface_to_usbdev(iface);
818 int i, alt, retval;
819
820 /* [9.2.3] if there's more than one altsetting, we need to be able to
821 * set and get each one. mostly trusts the descriptors from usbcore.
822 */
823 for (i = 0; i < iface->num_altsetting; i++) {
824
825 /* 9.2.3 constrains the range here */
826 alt = iface->altsetting[i].desc.bAlternateSetting;
827 if (alt < 0 || alt >= iface->num_altsetting) {
828 dev_err(&iface->dev,
829 "invalid alt [%d].bAltSetting = %d\n",
830 i, alt);
831 }
832
833 /* [real world] get/set unimplemented if there's only one */
834 if (realworld && iface->num_altsetting == 1)
835 continue;
836
837 /* [9.4.10] set_interface */
838 retval = set_altsetting(dev, alt);
839 if (retval) {
840 dev_err(&iface->dev, "can't set_interface = %d, %d\n",
841 alt, retval);
842 return retval;
843 }
844
845 /* [9.4.4] get_interface always works */
846 retval = get_altsetting(dev);
847 if (retval != alt) {
848 dev_err(&iface->dev, "get alt should be %d, was %d\n",
849 alt, retval);
850 return (retval < 0) ? retval : -EDOM;
851 }
852
853 }
854
855 /* [real world] get_config unimplemented if there's only one */
856 if (!realworld || udev->descriptor.bNumConfigurations != 1) {
857 int expected = udev->actconfig->desc.bConfigurationValue;
858
859 /* [9.4.2] get_configuration always works
860 * ... although some cheap devices (like one TI Hub I've got)
861 * won't return config descriptors except before set_config.
862 */
863 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
864 USB_REQ_GET_CONFIGURATION,
865 USB_DIR_IN | USB_RECIP_DEVICE,
866 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);
867 if (retval != 1 || dev->buf[0] != expected) {
868 dev_err(&iface->dev, "get config --> %d %d (1 %d)\n",
869 retval, dev->buf[0], expected);
870 return (retval < 0) ? retval : -EDOM;
871 }
872 }
873
874 /* there's always [9.4.3] a device descriptor [9.6.1] */
875 retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0,
876 dev->buf, sizeof(udev->descriptor));
877 if (retval != sizeof(udev->descriptor)) {
878 dev_err(&iface->dev, "dev descriptor --> %d\n", retval);
879 return (retval < 0) ? retval : -EDOM;
880 }
881
882 /*
883 * there's always [9.4.3] a bos device descriptor [9.6.2] in USB
884 * 3.0 spec
885 */
886 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0210) {
887 struct usb_bos_descriptor *bos = NULL;
888 struct usb_dev_cap_header *header = NULL;
889 unsigned total, num, length;
890 u8 *buf;
891
892 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
893 sizeof(*udev->bos->desc));
894 if (retval != sizeof(*udev->bos->desc)) {
895 dev_err(&iface->dev, "bos descriptor --> %d\n", retval);
896 return (retval < 0) ? retval : -EDOM;
897 }
898
899 bos = (struct usb_bos_descriptor *)dev->buf;
900 total = le16_to_cpu(bos->wTotalLength);
901 num = bos->bNumDeviceCaps;
902
903 if (total > TBUF_SIZE)
904 total = TBUF_SIZE;
905
906 /*
907 * get generic device-level capability descriptors [9.6.2]
908 * in USB 3.0 spec
909 */
910 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
911 total);
912 if (retval != total) {
913 dev_err(&iface->dev, "bos descriptor set --> %d\n",
914 retval);
915 return (retval < 0) ? retval : -EDOM;
916 }
917
918 length = sizeof(*udev->bos->desc);
919 buf = dev->buf;
920 for (i = 0; i < num; i++) {
921 buf += length;
922 if (buf + sizeof(struct usb_dev_cap_header) >
923 dev->buf + total)
924 break;
925
926 header = (struct usb_dev_cap_header *)buf;
927 length = header->bLength;
928
929 if (header->bDescriptorType !=
930 USB_DT_DEVICE_CAPABILITY) {
931 dev_warn(&udev->dev, "not device capability descriptor, skip\n");
932 continue;
933 }
934
935 switch (header->bDevCapabilityType) {
936 case USB_CAP_TYPE_EXT:
937 if (buf + USB_DT_USB_EXT_CAP_SIZE >
938 dev->buf + total ||
939 !is_good_ext(dev, buf)) {
940 dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n");
941 return -EDOM;
942 }
943 break;
944 case USB_SS_CAP_TYPE:
945 if (buf + USB_DT_USB_SS_CAP_SIZE >
946 dev->buf + total ||
947 !is_good_ss_cap(dev, buf)) {
948 dev_err(&iface->dev, "bogus superspeed device capability descriptor\n");
949 return -EDOM;
950 }
951 break;
952 case CONTAINER_ID_TYPE:
953 if (buf + USB_DT_USB_SS_CONTN_ID_SIZE >
954 dev->buf + total ||
955 !is_good_con_id(dev, buf)) {
956 dev_err(&iface->dev, "bogus container id descriptor\n");
957 return -EDOM;
958 }
959 break;
960 default:
961 break;
962 }
963 }
964 }
965
966 /* there's always [9.4.3] at least one config descriptor [9.6.3] */
967 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
968 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i,
969 dev->buf, TBUF_SIZE);
970 if (!is_good_config(dev, retval)) {
971 dev_err(&iface->dev,
972 "config [%d] descriptor --> %d\n",
973 i, retval);
974 return (retval < 0) ? retval : -EDOM;
975 }
976
977 /* FIXME cross-checking udev->config[i] to make sure usbcore
978 * parsed it right (etc) would be good testing paranoia
979 */
980 }
981
982 /* and sometimes [9.2.6.6] speed dependent descriptors */
983 if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) {
984 struct usb_qualifier_descriptor *d = NULL;
985
986 /* device qualifier [9.6.2] */
987 retval = usb_get_descriptor(udev,
988 USB_DT_DEVICE_QUALIFIER, 0, dev->buf,
989 sizeof(struct usb_qualifier_descriptor));
990 if (retval == -EPIPE) {
991 if (udev->speed == USB_SPEED_HIGH) {
992 dev_err(&iface->dev,
993 "hs dev qualifier --> %d\n",
994 retval);
995 return (retval < 0) ? retval : -EDOM;
996 }
997 /* usb2.0 but not high-speed capable; fine */
998 } else if (retval != sizeof(struct usb_qualifier_descriptor)) {
999 dev_err(&iface->dev, "dev qualifier --> %d\n", retval);
1000 return (retval < 0) ? retval : -EDOM;
1001 } else
1002 d = (struct usb_qualifier_descriptor *) dev->buf;
1003
1004 /* might not have [9.6.2] any other-speed configs [9.6.4] */
1005 if (d) {
1006 unsigned max = d->bNumConfigurations;
1007 for (i = 0; i < max; i++) {
1008 retval = usb_get_descriptor(udev,
1009 USB_DT_OTHER_SPEED_CONFIG, i,
1010 dev->buf, TBUF_SIZE);
1011 if (!is_good_config(dev, retval)) {
1012 dev_err(&iface->dev,
1013 "other speed config --> %d\n",
1014 retval);
1015 return (retval < 0) ? retval : -EDOM;
1016 }
1017 }
1018 }
1019 }
1020 /* FIXME fetch strings from at least the device descriptor */
1021
1022 /* [9.4.5] get_status always works */
1023 retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf);
1024 if (retval) {
1025 dev_err(&iface->dev, "get dev status --> %d\n", retval);
1026 return retval;
1027 }
1028
1029 /* FIXME configuration.bmAttributes says if we could try to set/clear
1030 * the device's remote wakeup feature ... if we can, test that here
1031 */
1032
1033 retval = usb_get_status(udev, USB_RECIP_INTERFACE,
1034 iface->altsetting[0].desc.bInterfaceNumber, dev->buf);
1035 if (retval) {
1036 dev_err(&iface->dev, "get interface status --> %d\n", retval);
1037 return retval;
1038 }
1039 /* FIXME get status for each endpoint in the interface */
1040
1041 return 0;
1042 }
1043
1044 /*-------------------------------------------------------------------------*/
1045
1046 /* use ch9 requests to test whether:
1047 * (a) queues work for control, keeping N subtests queued and
1048 * active (auto-resubmit) for M loops through the queue.
1049 * (b) protocol stalls (control-only) will autorecover.
1050 * it's not like bulk/intr; no halt clearing.
1051 * (c) short control reads are reported and handled.
1052 * (d) queues are always processed in-order
1053 */
1054
1055 struct ctrl_ctx {
1056 spinlock_t lock;
1057 struct usbtest_dev *dev;
1058 struct completion complete;
1059 unsigned count;
1060 unsigned pending;
1061 int status;
1062 struct urb **urb;
1063 struct usbtest_param_32 *param;
1064 int last;
1065 };
1066
1067 #define NUM_SUBCASES 16 /* how many test subcases here? */
1068
1069 struct subcase {
1070 struct usb_ctrlrequest setup;
1071 int number;
1072 int expected;
1073 };
1074
1075 static void ctrl_complete(struct urb *urb)
1076 {
1077 struct ctrl_ctx *ctx = urb->context;
1078 struct usb_ctrlrequest *reqp;
1079 struct subcase *subcase;
1080 int status = urb->status;
1081
1082 reqp = (struct usb_ctrlrequest *)urb->setup_packet;
1083 subcase = container_of(reqp, struct subcase, setup);
1084
1085 spin_lock(&ctx->lock);
1086 ctx->count--;
1087 ctx->pending--;
1088
1089 /* queue must transfer and complete in fifo order, unless
1090 * usb_unlink_urb() is used to unlink something not at the
1091 * physical queue head (not tested).
1092 */
1093 if (subcase->number > 0) {
1094 if ((subcase->number - ctx->last) != 1) {
1095 ERROR(ctx->dev,
1096 "subcase %d completed out of order, last %d\n",
1097 subcase->number, ctx->last);
1098 status = -EDOM;
1099 ctx->last = subcase->number;
1100 goto error;
1101 }
1102 }
1103 ctx->last = subcase->number;
1104
1105 /* succeed or fault in only one way? */
1106 if (status == subcase->expected)
1107 status = 0;
1108
1109 /* async unlink for cleanup? */
1110 else if (status != -ECONNRESET) {
1111
1112 /* some faults are allowed, not required */
1113 if (subcase->expected > 0 && (
1114 ((status == -subcase->expected /* happened */
1115 || status == 0)))) /* didn't */
1116 status = 0;
1117 /* sometimes more than one fault is allowed */
1118 else if (subcase->number == 12 && status == -EPIPE)
1119 status = 0;
1120 else
1121 ERROR(ctx->dev, "subtest %d error, status %d\n",
1122 subcase->number, status);
1123 }
1124
1125 /* unexpected status codes mean errors; ideally, in hardware */
1126 if (status) {
1127 error:
1128 if (ctx->status == 0) {
1129 int i;
1130
1131 ctx->status = status;
1132 ERROR(ctx->dev, "control queue %02x.%02x, err %d, "
1133 "%d left, subcase %d, len %d/%d\n",
1134 reqp->bRequestType, reqp->bRequest,
1135 status, ctx->count, subcase->number,
1136 urb->actual_length,
1137 urb->transfer_buffer_length);
1138
1139 /* FIXME this "unlink everything" exit route should
1140 * be a separate test case.
1141 */
1142
1143 /* unlink whatever's still pending */
1144 for (i = 1; i < ctx->param->sglen; i++) {
1145 struct urb *u = ctx->urb[
1146 (i + subcase->number)
1147 % ctx->param->sglen];
1148
1149 if (u == urb || !u->dev)
1150 continue;
1151 spin_unlock(&ctx->lock);
1152 status = usb_unlink_urb(u);
1153 spin_lock(&ctx->lock);
1154 switch (status) {
1155 case -EINPROGRESS:
1156 case -EBUSY:
1157 case -EIDRM:
1158 continue;
1159 default:
1160 ERROR(ctx->dev, "urb unlink --> %d\n",
1161 status);
1162 }
1163 }
1164 status = ctx->status;
1165 }
1166 }
1167
1168 /* resubmit if we need to, else mark this as done */
1169 if ((status == 0) && (ctx->pending < ctx->count)) {
1170 status = usb_submit_urb(urb, GFP_ATOMIC);
1171 if (status != 0) {
1172 ERROR(ctx->dev,
1173 "can't resubmit ctrl %02x.%02x, err %d\n",
1174 reqp->bRequestType, reqp->bRequest, status);
1175 urb->dev = NULL;
1176 } else
1177 ctx->pending++;
1178 } else
1179 urb->dev = NULL;
1180
1181 /* signal completion when nothing's queued */
1182 if (ctx->pending == 0)
1183 complete(&ctx->complete);
1184 spin_unlock(&ctx->lock);
1185 }
1186
1187 static int
1188 test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param)
1189 {
1190 struct usb_device *udev = testdev_to_usbdev(dev);
1191 struct urb **urb;
1192 struct ctrl_ctx context;
1193 int i;
1194
1195 if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen)
1196 return -EOPNOTSUPP;
1197
1198 spin_lock_init(&context.lock);
1199 context.dev = dev;
1200 init_completion(&context.complete);
1201 context.count = param->sglen * param->iterations;
1202 context.pending = 0;
1203 context.status = -ENOMEM;
1204 context.param = param;
1205 context.last = -1;
1206
1207 /* allocate and init the urbs we'll queue.
1208 * as with bulk/intr sglists, sglen is the queue depth; it also
1209 * controls which subtests run (more tests than sglen) or rerun.
1210 */
1211 urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL);
1212 if (!urb)
1213 return -ENOMEM;
1214 for (i = 0; i < param->sglen; i++) {
1215 int pipe = usb_rcvctrlpipe(udev, 0);
1216 unsigned len;
1217 struct urb *u;
1218 struct usb_ctrlrequest req;
1219 struct subcase *reqp;
1220
1221 /* sign of this variable means:
1222 * -: tested code must return this (negative) error code
1223 * +: tested code may return this (negative too) error code
1224 */
1225 int expected = 0;
1226
1227 /* requests here are mostly expected to succeed on any
1228 * device, but some are chosen to trigger protocol stalls
1229 * or short reads.
1230 */
1231 memset(&req, 0, sizeof(req));
1232 req.bRequest = USB_REQ_GET_DESCRIPTOR;
1233 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1234
1235 switch (i % NUM_SUBCASES) {
1236 case 0: /* get device descriptor */
1237 req.wValue = cpu_to_le16(USB_DT_DEVICE << 8);
1238 len = sizeof(struct usb_device_descriptor);
1239 break;
1240 case 1: /* get first config descriptor (only) */
1241 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1242 len = sizeof(struct usb_config_descriptor);
1243 break;
1244 case 2: /* get altsetting (OFTEN STALLS) */
1245 req.bRequest = USB_REQ_GET_INTERFACE;
1246 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1247 /* index = 0 means first interface */
1248 len = 1;
1249 expected = EPIPE;
1250 break;
1251 case 3: /* get interface status */
1252 req.bRequest = USB_REQ_GET_STATUS;
1253 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1254 /* interface 0 */
1255 len = 2;
1256 break;
1257 case 4: /* get device status */
1258 req.bRequest = USB_REQ_GET_STATUS;
1259 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1260 len = 2;
1261 break;
1262 case 5: /* get device qualifier (MAY STALL) */
1263 req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8);
1264 len = sizeof(struct usb_qualifier_descriptor);
1265 if (udev->speed != USB_SPEED_HIGH)
1266 expected = EPIPE;
1267 break;
1268 case 6: /* get first config descriptor, plus interface */
1269 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1270 len = sizeof(struct usb_config_descriptor);
1271 len += sizeof(struct usb_interface_descriptor);
1272 break;
1273 case 7: /* get interface descriptor (ALWAYS STALLS) */
1274 req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8);
1275 /* interface == 0 */
1276 len = sizeof(struct usb_interface_descriptor);
1277 expected = -EPIPE;
1278 break;
1279 /* NOTE: two consecutive stalls in the queue here.
1280 * that tests fault recovery a bit more aggressively. */
1281 case 8: /* clear endpoint halt (MAY STALL) */
1282 req.bRequest = USB_REQ_CLEAR_FEATURE;
1283 req.bRequestType = USB_RECIP_ENDPOINT;
1284 /* wValue 0 == ep halt */
1285 /* wIndex 0 == ep0 (shouldn't halt!) */
1286 len = 0;
1287 pipe = usb_sndctrlpipe(udev, 0);
1288 expected = EPIPE;
1289 break;
1290 case 9: /* get endpoint status */
1291 req.bRequest = USB_REQ_GET_STATUS;
1292 req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT;
1293 /* endpoint 0 */
1294 len = 2;
1295 break;
1296 case 10: /* trigger short read (EREMOTEIO) */
1297 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1298 len = 1024;
1299 expected = -EREMOTEIO;
1300 break;
1301 /* NOTE: two consecutive _different_ faults in the queue. */
1302 case 11: /* get endpoint descriptor (ALWAYS STALLS) */
1303 req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8);
1304 /* endpoint == 0 */
1305 len = sizeof(struct usb_interface_descriptor);
1306 expected = EPIPE;
1307 break;
1308 /* NOTE: sometimes even a third fault in the queue! */
1309 case 12: /* get string 0 descriptor (MAY STALL) */
1310 req.wValue = cpu_to_le16(USB_DT_STRING << 8);
1311 /* string == 0, for language IDs */
1312 len = sizeof(struct usb_interface_descriptor);
1313 /* may succeed when > 4 languages */
1314 expected = EREMOTEIO; /* or EPIPE, if no strings */
1315 break;
1316 case 13: /* short read, resembling case 10 */
1317 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1318 /* last data packet "should" be DATA1, not DATA0 */
1319 if (udev->speed == USB_SPEED_SUPER)
1320 len = 1024 - 512;
1321 else
1322 len = 1024 - udev->descriptor.bMaxPacketSize0;
1323 expected = -EREMOTEIO;
1324 break;
1325 case 14: /* short read; try to fill the last packet */
1326 req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0);
1327 /* device descriptor size == 18 bytes */
1328 len = udev->descriptor.bMaxPacketSize0;
1329 if (udev->speed == USB_SPEED_SUPER)
1330 len = 512;
1331 switch (len) {
1332 case 8:
1333 len = 24;
1334 break;
1335 case 16:
1336 len = 32;
1337 break;
1338 }
1339 expected = -EREMOTEIO;
1340 break;
1341 case 15:
1342 req.wValue = cpu_to_le16(USB_DT_BOS << 8);
1343 if (udev->bos)
1344 len = le16_to_cpu(udev->bos->desc->wTotalLength);
1345 else
1346 len = sizeof(struct usb_bos_descriptor);
1347 if (le16_to_cpu(udev->descriptor.bcdUSB) < 0x0201)
1348 expected = -EPIPE;
1349 break;
1350 default:
1351 ERROR(dev, "bogus number of ctrl queue testcases!\n");
1352 context.status = -EINVAL;
1353 goto cleanup;
1354 }
1355 req.wLength = cpu_to_le16(len);
1356 urb[i] = u = simple_alloc_urb(udev, pipe, len, 0);
1357 if (!u)
1358 goto cleanup;
1359
1360 reqp = kmalloc(sizeof(*reqp), GFP_KERNEL);
1361 if (!reqp)
1362 goto cleanup;
1363 reqp->setup = req;
1364 reqp->number = i % NUM_SUBCASES;
1365 reqp->expected = expected;
1366 u->setup_packet = (char *) &reqp->setup;
1367
1368 u->context = &context;
1369 u->complete = ctrl_complete;
1370 }
1371
1372 /* queue the urbs */
1373 context.urb = urb;
1374 spin_lock_irq(&context.lock);
1375 for (i = 0; i < param->sglen; i++) {
1376 context.status = usb_submit_urb(urb[i], GFP_ATOMIC);
1377 if (context.status != 0) {
1378 ERROR(dev, "can't submit urb[%d], status %d\n",
1379 i, context.status);
1380 context.count = context.pending;
1381 break;
1382 }
1383 context.pending++;
1384 }
1385 spin_unlock_irq(&context.lock);
1386
1387 /* FIXME set timer and time out; provide a disconnect hook */
1388
1389 /* wait for the last one to complete */
1390 if (context.pending > 0)
1391 wait_for_completion(&context.complete);
1392
1393 cleanup:
1394 for (i = 0; i < param->sglen; i++) {
1395 if (!urb[i])
1396 continue;
1397 urb[i]->dev = udev;
1398 kfree(urb[i]->setup_packet);
1399 simple_free_urb(urb[i]);
1400 }
1401 kfree(urb);
1402 return context.status;
1403 }
1404 #undef NUM_SUBCASES
1405
1406
1407 /*-------------------------------------------------------------------------*/
1408
1409 static void unlink1_callback(struct urb *urb)
1410 {
1411 int status = urb->status;
1412
1413 /* we "know" -EPIPE (stall) never happens */
1414 if (!status)
1415 status = usb_submit_urb(urb, GFP_ATOMIC);
1416 if (status) {
1417 urb->status = status;
1418 complete(urb->context);
1419 }
1420 }
1421
1422 static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
1423 {
1424 struct urb *urb;
1425 struct completion completion;
1426 int retval = 0;
1427
1428 init_completion(&completion);
1429 urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size, 0);
1430 if (!urb)
1431 return -ENOMEM;
1432 urb->context = &completion;
1433 urb->complete = unlink1_callback;
1434
1435 if (usb_pipeout(urb->pipe)) {
1436 simple_fill_buf(urb);
1437 urb->transfer_flags |= URB_ZERO_PACKET;
1438 }
1439
1440 /* keep the endpoint busy. there are lots of hc/hcd-internal
1441 * states, and testing should get to all of them over time.
1442 *
1443 * FIXME want additional tests for when endpoint is STALLing
1444 * due to errors, or is just NAKing requests.
1445 */
1446 retval = usb_submit_urb(urb, GFP_KERNEL);
1447 if (retval != 0) {
1448 dev_err(&dev->intf->dev, "submit fail %d\n", retval);
1449 return retval;
1450 }
1451
1452 /* unlinking that should always work. variable delay tests more
1453 * hcd states and code paths, even with little other system load.
1454 */
1455 msleep(jiffies % (2 * INTERRUPT_RATE));
1456 if (async) {
1457 while (!completion_done(&completion)) {
1458 retval = usb_unlink_urb(urb);
1459
1460 if (retval == 0 && usb_pipein(urb->pipe))
1461 retval = simple_check_buf(dev, urb);
1462
1463 switch (retval) {
1464 case -EBUSY:
1465 case -EIDRM:
1466 /* we can't unlink urbs while they're completing
1467 * or if they've completed, and we haven't
1468 * resubmitted. "normal" drivers would prevent
1469 * resubmission, but since we're testing unlink
1470 * paths, we can't.
1471 */
1472 ERROR(dev, "unlink retry\n");
1473 continue;
1474 case 0:
1475 case -EINPROGRESS:
1476 break;
1477
1478 default:
1479 dev_err(&dev->intf->dev,
1480 "unlink fail %d\n", retval);
1481 return retval;
1482 }
1483
1484 break;
1485 }
1486 } else
1487 usb_kill_urb(urb);
1488
1489 wait_for_completion(&completion);
1490 retval = urb->status;
1491 simple_free_urb(urb);
1492
1493 if (async)
1494 return (retval == -ECONNRESET) ? 0 : retval - 1000;
1495 else
1496 return (retval == -ENOENT || retval == -EPERM) ?
1497 0 : retval - 2000;
1498 }
1499
1500 static int unlink_simple(struct usbtest_dev *dev, int pipe, int len)
1501 {
1502 int retval = 0;
1503
1504 /* test sync and async paths */
1505 retval = unlink1(dev, pipe, len, 1);
1506 if (!retval)
1507 retval = unlink1(dev, pipe, len, 0);
1508 return retval;
1509 }
1510
1511 /*-------------------------------------------------------------------------*/
1512
1513 struct queued_ctx {
1514 struct completion complete;
1515 atomic_t pending;
1516 unsigned num;
1517 int status;
1518 struct urb **urbs;
1519 };
1520
1521 static void unlink_queued_callback(struct urb *urb)
1522 {
1523 int status = urb->status;
1524 struct queued_ctx *ctx = urb->context;
1525
1526 if (ctx->status)
1527 goto done;
1528 if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) {
1529 if (status == -ECONNRESET)
1530 goto done;
1531 /* What error should we report if the URB completed normally? */
1532 }
1533 if (status != 0)
1534 ctx->status = status;
1535
1536 done:
1537 if (atomic_dec_and_test(&ctx->pending))
1538 complete(&ctx->complete);
1539 }
1540
1541 static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num,
1542 unsigned size)
1543 {
1544 struct queued_ctx ctx;
1545 struct usb_device *udev = testdev_to_usbdev(dev);
1546 void *buf;
1547 dma_addr_t buf_dma;
1548 int i;
1549 int retval = -ENOMEM;
1550
1551 init_completion(&ctx.complete);
1552 atomic_set(&ctx.pending, 1); /* One more than the actual value */
1553 ctx.num = num;
1554 ctx.status = 0;
1555
1556 buf = usb_alloc_coherent(udev, size, GFP_KERNEL, &buf_dma);
1557 if (!buf)
1558 return retval;
1559 memset(buf, 0, size);
1560
1561 /* Allocate and init the urbs we'll queue */
1562 ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL);
1563 if (!ctx.urbs)
1564 goto free_buf;
1565 for (i = 0; i < num; i++) {
1566 ctx.urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
1567 if (!ctx.urbs[i])
1568 goto free_urbs;
1569 usb_fill_bulk_urb(ctx.urbs[i], udev, pipe, buf, size,
1570 unlink_queued_callback, &ctx);
1571 ctx.urbs[i]->transfer_dma = buf_dma;
1572 ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1573
1574 if (usb_pipeout(ctx.urbs[i]->pipe)) {
1575 simple_fill_buf(ctx.urbs[i]);
1576 ctx.urbs[i]->transfer_flags |= URB_ZERO_PACKET;
1577 }
1578 }
1579
1580 /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */
1581 for (i = 0; i < num; i++) {
1582 atomic_inc(&ctx.pending);
1583 retval = usb_submit_urb(ctx.urbs[i], GFP_KERNEL);
1584 if (retval != 0) {
1585 dev_err(&dev->intf->dev, "submit urbs[%d] fail %d\n",
1586 i, retval);
1587 atomic_dec(&ctx.pending);
1588 ctx.status = retval;
1589 break;
1590 }
1591 }
1592 if (i == num) {
1593 usb_unlink_urb(ctx.urbs[num - 4]);
1594 usb_unlink_urb(ctx.urbs[num - 2]);
1595 } else {
1596 while (--i >= 0)
1597 usb_unlink_urb(ctx.urbs[i]);
1598 }
1599
1600 if (atomic_dec_and_test(&ctx.pending)) /* The extra count */
1601 complete(&ctx.complete);
1602 wait_for_completion(&ctx.complete);
1603 retval = ctx.status;
1604
1605 free_urbs:
1606 for (i = 0; i < num; i++)
1607 usb_free_urb(ctx.urbs[i]);
1608 kfree(ctx.urbs);
1609 free_buf:
1610 usb_free_coherent(udev, size, buf, buf_dma);
1611 return retval;
1612 }
1613
1614 /*-------------------------------------------------------------------------*/
1615
1616 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1617 {
1618 int retval;
1619 u16 status;
1620
1621 /* shouldn't look or act halted */
1622 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1623 if (retval < 0) {
1624 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n",
1625 ep, retval);
1626 return retval;
1627 }
1628 if (status != 0) {
1629 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status);
1630 return -EINVAL;
1631 }
1632 retval = simple_io(tdev, urb, 1, 0, 0, __func__);
1633 if (retval != 0)
1634 return -EINVAL;
1635 return 0;
1636 }
1637
1638 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1639 {
1640 int retval;
1641 u16 status;
1642
1643 /* should look and act halted */
1644 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1645 if (retval < 0) {
1646 ERROR(tdev, "ep %02x couldn't get halt status, %d\n",
1647 ep, retval);
1648 return retval;
1649 }
1650 if (status != 1) {
1651 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status);
1652 return -EINVAL;
1653 }
1654 retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__);
1655 if (retval != -EPIPE)
1656 return -EINVAL;
1657 retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted");
1658 if (retval != -EPIPE)
1659 return -EINVAL;
1660 return 0;
1661 }
1662
1663 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb)
1664 {
1665 int retval;
1666
1667 /* shouldn't look or act halted now */
1668 retval = verify_not_halted(tdev, ep, urb);
1669 if (retval < 0)
1670 return retval;
1671
1672 /* set halt (protocol test only), verify it worked */
1673 retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0),
1674 USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT,
1675 USB_ENDPOINT_HALT, ep,
1676 NULL, 0, USB_CTRL_SET_TIMEOUT);
1677 if (retval < 0) {
1678 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval);
1679 return retval;
1680 }
1681 retval = verify_halted(tdev, ep, urb);
1682 if (retval < 0) {
1683 int ret;
1684
1685 /* clear halt anyways, else further tests will fail */
1686 ret = usb_clear_halt(urb->dev, urb->pipe);
1687 if (ret)
1688 ERROR(tdev, "ep %02x couldn't clear halt, %d\n",
1689 ep, ret);
1690
1691 return retval;
1692 }
1693
1694 /* clear halt (tests API + protocol), verify it worked */
1695 retval = usb_clear_halt(urb->dev, urb->pipe);
1696 if (retval < 0) {
1697 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval);
1698 return retval;
1699 }
1700 retval = verify_not_halted(tdev, ep, urb);
1701 if (retval < 0)
1702 return retval;
1703
1704 /* NOTE: could also verify SET_INTERFACE clear halts ... */
1705
1706 return 0;
1707 }
1708
1709 static int halt_simple(struct usbtest_dev *dev)
1710 {
1711 int ep;
1712 int retval = 0;
1713 struct urb *urb;
1714 struct usb_device *udev = testdev_to_usbdev(dev);
1715
1716 if (udev->speed == USB_SPEED_SUPER)
1717 urb = simple_alloc_urb(udev, 0, 1024, 0);
1718 else
1719 urb = simple_alloc_urb(udev, 0, 512, 0);
1720 if (urb == NULL)
1721 return -ENOMEM;
1722
1723 if (dev->in_pipe) {
1724 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN;
1725 urb->pipe = dev->in_pipe;
1726 retval = test_halt(dev, ep, urb);
1727 if (retval < 0)
1728 goto done;
1729 }
1730
1731 if (dev->out_pipe) {
1732 ep = usb_pipeendpoint(dev->out_pipe);
1733 urb->pipe = dev->out_pipe;
1734 retval = test_halt(dev, ep, urb);
1735 }
1736 done:
1737 simple_free_urb(urb);
1738 return retval;
1739 }
1740
1741 /*-------------------------------------------------------------------------*/
1742
1743 /* Control OUT tests use the vendor control requests from Intel's
1744 * USB 2.0 compliance test device: write a buffer, read it back.
1745 *
1746 * Intel's spec only _requires_ that it work for one packet, which
1747 * is pretty weak. Some HCDs place limits here; most devices will
1748 * need to be able to handle more than one OUT data packet. We'll
1749 * try whatever we're told to try.
1750 */
1751 static int ctrl_out(struct usbtest_dev *dev,
1752 unsigned count, unsigned length, unsigned vary, unsigned offset)
1753 {
1754 unsigned i, j, len;
1755 int retval;
1756 u8 *buf;
1757 char *what = "?";
1758 struct usb_device *udev;
1759
1760 if (length < 1 || length > 0xffff || vary >= length)
1761 return -EINVAL;
1762
1763 buf = kmalloc(length + offset, GFP_KERNEL);
1764 if (!buf)
1765 return -ENOMEM;
1766
1767 buf += offset;
1768 udev = testdev_to_usbdev(dev);
1769 len = length;
1770 retval = 0;
1771
1772 /* NOTE: hardware might well act differently if we pushed it
1773 * with lots back-to-back queued requests.
1774 */
1775 for (i = 0; i < count; i++) {
1776 /* write patterned data */
1777 for (j = 0; j < len; j++)
1778 buf[j] = (u8)(i + j);
1779 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1780 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR,
1781 0, 0, buf, len, USB_CTRL_SET_TIMEOUT);
1782 if (retval != len) {
1783 what = "write";
1784 if (retval >= 0) {
1785 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n",
1786 retval, len);
1787 retval = -EBADMSG;
1788 }
1789 break;
1790 }
1791
1792 /* read it back -- assuming nothing intervened!! */
1793 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
1794 0x5c, USB_DIR_IN|USB_TYPE_VENDOR,
1795 0, 0, buf, len, USB_CTRL_GET_TIMEOUT);
1796 if (retval != len) {
1797 what = "read";
1798 if (retval >= 0) {
1799 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n",
1800 retval, len);
1801 retval = -EBADMSG;
1802 }
1803 break;
1804 }
1805
1806 /* fail if we can't verify */
1807 for (j = 0; j < len; j++) {
1808 if (buf[j] != (u8)(i + j)) {
1809 ERROR(dev, "ctrl_out, byte %d is %d not %d\n",
1810 j, buf[j], (u8)(i + j));
1811 retval = -EBADMSG;
1812 break;
1813 }
1814 }
1815 if (retval < 0) {
1816 what = "verify";
1817 break;
1818 }
1819
1820 len += vary;
1821
1822 /* [real world] the "zero bytes IN" case isn't really used.
1823 * hardware can easily trip up in this weird case, since its
1824 * status stage is IN, not OUT like other ep0in transfers.
1825 */
1826 if (len > length)
1827 len = realworld ? 1 : 0;
1828 }
1829
1830 if (retval < 0)
1831 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n",
1832 what, retval, i);
1833
1834 kfree(buf - offset);
1835 return retval;
1836 }
1837
1838 /*-------------------------------------------------------------------------*/
1839
1840 /* ISO/BULK tests ... mimics common usage
1841 * - buffer length is split into N packets (mostly maxpacket sized)
1842 * - multi-buffers according to sglen
1843 */
1844
1845 struct transfer_context {
1846 unsigned count;
1847 unsigned pending;
1848 spinlock_t lock;
1849 struct completion done;
1850 int submit_error;
1851 unsigned long errors;
1852 unsigned long packet_count;
1853 struct usbtest_dev *dev;
1854 bool is_iso;
1855 };
1856
1857 static void complicated_callback(struct urb *urb)
1858 {
1859 struct transfer_context *ctx = urb->context;
1860
1861 spin_lock(&ctx->lock);
1862 ctx->count--;
1863
1864 ctx->packet_count += urb->number_of_packets;
1865 if (urb->error_count > 0)
1866 ctx->errors += urb->error_count;
1867 else if (urb->status != 0)
1868 ctx->errors += (ctx->is_iso ? urb->number_of_packets : 1);
1869 else if (urb->actual_length != urb->transfer_buffer_length)
1870 ctx->errors++;
1871 else if (check_guard_bytes(ctx->dev, urb) != 0)
1872 ctx->errors++;
1873
1874 if (urb->status == 0 && ctx->count > (ctx->pending - 1)
1875 && !ctx->submit_error) {
1876 int status = usb_submit_urb(urb, GFP_ATOMIC);
1877 switch (status) {
1878 case 0:
1879 goto done;
1880 default:
1881 dev_err(&ctx->dev->intf->dev,
1882 "resubmit err %d\n",
1883 status);
1884 /* FALLTHROUGH */
1885 case -ENODEV: /* disconnected */
1886 case -ESHUTDOWN: /* endpoint disabled */
1887 ctx->submit_error = 1;
1888 break;
1889 }
1890 }
1891
1892 ctx->pending--;
1893 if (ctx->pending == 0) {
1894 if (ctx->errors)
1895 dev_err(&ctx->dev->intf->dev,
1896 "during the test, %lu errors out of %lu\n",
1897 ctx->errors, ctx->packet_count);
1898 complete(&ctx->done);
1899 }
1900 done:
1901 spin_unlock(&ctx->lock);
1902 }
1903
1904 static struct urb *iso_alloc_urb(
1905 struct usb_device *udev,
1906 int pipe,
1907 struct usb_endpoint_descriptor *desc,
1908 long bytes,
1909 unsigned offset
1910 )
1911 {
1912 struct urb *urb;
1913 unsigned i, maxp, packets;
1914
1915 if (bytes < 0 || !desc)
1916 return NULL;
1917 maxp = 0x7ff & usb_endpoint_maxp(desc);
1918 maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11));
1919 packets = DIV_ROUND_UP(bytes, maxp);
1920
1921 urb = usb_alloc_urb(packets, GFP_KERNEL);
1922 if (!urb)
1923 return urb;
1924 urb->dev = udev;
1925 urb->pipe = pipe;
1926
1927 urb->number_of_packets = packets;
1928 urb->transfer_buffer_length = bytes;
1929 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
1930 GFP_KERNEL,
1931 &urb->transfer_dma);
1932 if (!urb->transfer_buffer) {
1933 usb_free_urb(urb);
1934 return NULL;
1935 }
1936 if (offset) {
1937 memset(urb->transfer_buffer, GUARD_BYTE, offset);
1938 urb->transfer_buffer += offset;
1939 urb->transfer_dma += offset;
1940 }
1941 /* For inbound transfers use guard byte so that test fails if
1942 data not correctly copied */
1943 memset(urb->transfer_buffer,
1944 usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
1945 bytes);
1946
1947 for (i = 0; i < packets; i++) {
1948 /* here, only the last packet will be short */
1949 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp);
1950 bytes -= urb->iso_frame_desc[i].length;
1951
1952 urb->iso_frame_desc[i].offset = maxp * i;
1953 }
1954
1955 urb->complete = complicated_callback;
1956 /* urb->context = SET BY CALLER */
1957 urb->interval = 1 << (desc->bInterval - 1);
1958 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1959 return urb;
1960 }
1961
1962 static int
1963 test_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param,
1964 int pipe, struct usb_endpoint_descriptor *desc, unsigned offset)
1965 {
1966 struct transfer_context context;
1967 struct usb_device *udev;
1968 unsigned i;
1969 unsigned long packets = 0;
1970 int status = 0;
1971 struct urb *urbs[param->sglen];
1972
1973 memset(&context, 0, sizeof(context));
1974 context.count = param->iterations * param->sglen;
1975 context.dev = dev;
1976 context.is_iso = !!desc;
1977 init_completion(&context.done);
1978 spin_lock_init(&context.lock);
1979
1980 udev = testdev_to_usbdev(dev);
1981
1982 for (i = 0; i < param->sglen; i++) {
1983 if (context.is_iso)
1984 urbs[i] = iso_alloc_urb(udev, pipe, desc,
1985 param->length, offset);
1986 else
1987 urbs[i] = complicated_alloc_urb(udev, pipe,
1988 param->length, 0);
1989
1990 if (!urbs[i]) {
1991 status = -ENOMEM;
1992 goto fail;
1993 }
1994 packets += urbs[i]->number_of_packets;
1995 urbs[i]->context = &context;
1996 }
1997 packets *= param->iterations;
1998
1999 if (context.is_iso) {
2000 dev_info(&dev->intf->dev,
2001 "iso period %d %sframes, wMaxPacket %d, transactions: %d\n",
2002 1 << (desc->bInterval - 1),
2003 (udev->speed == USB_SPEED_HIGH) ? "micro" : "",
2004 usb_endpoint_maxp(desc) & 0x7ff,
2005 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11)));
2006
2007 dev_info(&dev->intf->dev,
2008 "total %lu msec (%lu packets)\n",
2009 (packets * (1 << (desc->bInterval - 1)))
2010 / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1),
2011 packets);
2012 }
2013
2014 spin_lock_irq(&context.lock);
2015 for (i = 0; i < param->sglen; i++) {
2016 ++context.pending;
2017 status = usb_submit_urb(urbs[i], GFP_ATOMIC);
2018 if (status < 0) {
2019 ERROR(dev, "submit iso[%d], error %d\n", i, status);
2020 if (i == 0) {
2021 spin_unlock_irq(&context.lock);
2022 goto fail;
2023 }
2024
2025 simple_free_urb(urbs[i]);
2026 urbs[i] = NULL;
2027 context.pending--;
2028 context.submit_error = 1;
2029 break;
2030 }
2031 }
2032 spin_unlock_irq(&context.lock);
2033
2034 wait_for_completion(&context.done);
2035
2036 for (i = 0; i < param->sglen; i++) {
2037 if (urbs[i])
2038 simple_free_urb(urbs[i]);
2039 }
2040 /*
2041 * Isochronous transfers are expected to fail sometimes. As an
2042 * arbitrary limit, we will report an error if any submissions
2043 * fail or if the transfer failure rate is > 10%.
2044 */
2045 if (status != 0)
2046 ;
2047 else if (context.submit_error)
2048 status = -EACCES;
2049 else if (context.errors >
2050 (context.is_iso ? context.packet_count / 10 : 0))
2051 status = -EIO;
2052 return status;
2053
2054 fail:
2055 for (i = 0; i < param->sglen; i++) {
2056 if (urbs[i])
2057 simple_free_urb(urbs[i]);
2058 }
2059 return status;
2060 }
2061
2062 static int test_unaligned_bulk(
2063 struct usbtest_dev *tdev,
2064 int pipe,
2065 unsigned length,
2066 int iterations,
2067 unsigned transfer_flags,
2068 const char *label)
2069 {
2070 int retval;
2071 struct urb *urb = usbtest_alloc_urb(testdev_to_usbdev(tdev),
2072 pipe, length, transfer_flags, 1, 0, simple_callback);
2073
2074 if (!urb)
2075 return -ENOMEM;
2076
2077 retval = simple_io(tdev, urb, iterations, 0, 0, label);
2078 simple_free_urb(urb);
2079 return retval;
2080 }
2081
2082 /* Run tests. */
2083 static int
2084 usbtest_do_ioctl(struct usb_interface *intf, struct usbtest_param_32 *param)
2085 {
2086 struct usbtest_dev *dev = usb_get_intfdata(intf);
2087 struct usb_device *udev = testdev_to_usbdev(dev);
2088 struct urb *urb;
2089 struct scatterlist *sg;
2090 struct usb_sg_request req;
2091 unsigned i;
2092 int retval = -EOPNOTSUPP;
2093
2094 if (param->iterations <= 0)
2095 return -EINVAL;
2096 /*
2097 * Just a bunch of test cases that every HCD is expected to handle.
2098 *
2099 * Some may need specific firmware, though it'd be good to have
2100 * one firmware image to handle all the test cases.
2101 *
2102 * FIXME add more tests! cancel requests, verify the data, control
2103 * queueing, concurrent read+write threads, and so on.
2104 */
2105 switch (param->test_num) {
2106
2107 case 0:
2108 dev_info(&intf->dev, "TEST 0: NOP\n");
2109 retval = 0;
2110 break;
2111
2112 /* Simple non-queued bulk I/O tests */
2113 case 1:
2114 if (dev->out_pipe == 0)
2115 break;
2116 dev_info(&intf->dev,
2117 "TEST 1: write %d bytes %u times\n",
2118 param->length, param->iterations);
2119 urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0);
2120 if (!urb) {
2121 retval = -ENOMEM;
2122 break;
2123 }
2124 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2125 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1");
2126 simple_free_urb(urb);
2127 break;
2128 case 2:
2129 if (dev->in_pipe == 0)
2130 break;
2131 dev_info(&intf->dev,
2132 "TEST 2: read %d bytes %u times\n",
2133 param->length, param->iterations);
2134 urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0);
2135 if (!urb) {
2136 retval = -ENOMEM;
2137 break;
2138 }
2139 /* FIRMWARE: bulk source (maybe generates short writes) */
2140 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2");
2141 simple_free_urb(urb);
2142 break;
2143 case 3:
2144 if (dev->out_pipe == 0 || param->vary == 0)
2145 break;
2146 dev_info(&intf->dev,
2147 "TEST 3: write/%d 0..%d bytes %u times\n",
2148 param->vary, param->length, param->iterations);
2149 urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0);
2150 if (!urb) {
2151 retval = -ENOMEM;
2152 break;
2153 }
2154 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2155 retval = simple_io(dev, urb, param->iterations, param->vary,
2156 0, "test3");
2157 simple_free_urb(urb);
2158 break;
2159 case 4:
2160 if (dev->in_pipe == 0 || param->vary == 0)
2161 break;
2162 dev_info(&intf->dev,
2163 "TEST 4: read/%d 0..%d bytes %u times\n",
2164 param->vary, param->length, param->iterations);
2165 urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0);
2166 if (!urb) {
2167 retval = -ENOMEM;
2168 break;
2169 }
2170 /* FIRMWARE: bulk source (maybe generates short writes) */
2171 retval = simple_io(dev, urb, param->iterations, param->vary,
2172 0, "test4");
2173 simple_free_urb(urb);
2174 break;
2175
2176 /* Queued bulk I/O tests */
2177 case 5:
2178 if (dev->out_pipe == 0 || param->sglen == 0)
2179 break;
2180 dev_info(&intf->dev,
2181 "TEST 5: write %d sglists %d entries of %d bytes\n",
2182 param->iterations,
2183 param->sglen, param->length);
2184 sg = alloc_sglist(param->sglen, param->length,
2185 0, dev, dev->out_pipe);
2186 if (!sg) {
2187 retval = -ENOMEM;
2188 break;
2189 }
2190 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2191 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2192 &req, sg, param->sglen);
2193 free_sglist(sg, param->sglen);
2194 break;
2195
2196 case 6:
2197 if (dev->in_pipe == 0 || param->sglen == 0)
2198 break;
2199 dev_info(&intf->dev,
2200 "TEST 6: read %d sglists %d entries of %d bytes\n",
2201 param->iterations,
2202 param->sglen, param->length);
2203 sg = alloc_sglist(param->sglen, param->length,
2204 0, dev, dev->in_pipe);
2205 if (!sg) {
2206 retval = -ENOMEM;
2207 break;
2208 }
2209 /* FIRMWARE: bulk source (maybe generates short writes) */
2210 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2211 &req, sg, param->sglen);
2212 free_sglist(sg, param->sglen);
2213 break;
2214 case 7:
2215 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0)
2216 break;
2217 dev_info(&intf->dev,
2218 "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n",
2219 param->vary, param->iterations,
2220 param->sglen, param->length);
2221 sg = alloc_sglist(param->sglen, param->length,
2222 param->vary, dev, dev->out_pipe);
2223 if (!sg) {
2224 retval = -ENOMEM;
2225 break;
2226 }
2227 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2228 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2229 &req, sg, param->sglen);
2230 free_sglist(sg, param->sglen);
2231 break;
2232 case 8:
2233 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0)
2234 break;
2235 dev_info(&intf->dev,
2236 "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n",
2237 param->vary, param->iterations,
2238 param->sglen, param->length);
2239 sg = alloc_sglist(param->sglen, param->length,
2240 param->vary, dev, dev->in_pipe);
2241 if (!sg) {
2242 retval = -ENOMEM;
2243 break;
2244 }
2245 /* FIRMWARE: bulk source (maybe generates short writes) */
2246 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2247 &req, sg, param->sglen);
2248 free_sglist(sg, param->sglen);
2249 break;
2250
2251 /* non-queued sanity tests for control (chapter 9 subset) */
2252 case 9:
2253 retval = 0;
2254 dev_info(&intf->dev,
2255 "TEST 9: ch9 (subset) control tests, %d times\n",
2256 param->iterations);
2257 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2258 retval = ch9_postconfig(dev);
2259 if (retval)
2260 dev_err(&intf->dev, "ch9 subset failed, "
2261 "iterations left %d\n", i);
2262 break;
2263
2264 /* queued control messaging */
2265 case 10:
2266 retval = 0;
2267 dev_info(&intf->dev,
2268 "TEST 10: queue %d control calls, %d times\n",
2269 param->sglen,
2270 param->iterations);
2271 retval = test_ctrl_queue(dev, param);
2272 break;
2273
2274 /* simple non-queued unlinks (ring with one urb) */
2275 case 11:
2276 if (dev->in_pipe == 0 || !param->length)
2277 break;
2278 retval = 0;
2279 dev_info(&intf->dev, "TEST 11: unlink %d reads of %d\n",
2280 param->iterations, param->length);
2281 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2282 retval = unlink_simple(dev, dev->in_pipe,
2283 param->length);
2284 if (retval)
2285 dev_err(&intf->dev, "unlink reads failed %d, "
2286 "iterations left %d\n", retval, i);
2287 break;
2288 case 12:
2289 if (dev->out_pipe == 0 || !param->length)
2290 break;
2291 retval = 0;
2292 dev_info(&intf->dev, "TEST 12: unlink %d writes of %d\n",
2293 param->iterations, param->length);
2294 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2295 retval = unlink_simple(dev, dev->out_pipe,
2296 param->length);
2297 if (retval)
2298 dev_err(&intf->dev, "unlink writes failed %d, "
2299 "iterations left %d\n", retval, i);
2300 break;
2301
2302 /* ep halt tests */
2303 case 13:
2304 if (dev->out_pipe == 0 && dev->in_pipe == 0)
2305 break;
2306 retval = 0;
2307 dev_info(&intf->dev, "TEST 13: set/clear %d halts\n",
2308 param->iterations);
2309 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2310 retval = halt_simple(dev);
2311
2312 if (retval)
2313 ERROR(dev, "halts failed, iterations left %d\n", i);
2314 break;
2315
2316 /* control write tests */
2317 case 14:
2318 if (!dev->info->ctrl_out)
2319 break;
2320 dev_info(&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n",
2321 param->iterations,
2322 realworld ? 1 : 0, param->length,
2323 param->vary);
2324 retval = ctrl_out(dev, param->iterations,
2325 param->length, param->vary, 0);
2326 break;
2327
2328 /* iso write tests */
2329 case 15:
2330 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2331 break;
2332 dev_info(&intf->dev,
2333 "TEST 15: write %d iso, %d entries of %d bytes\n",
2334 param->iterations,
2335 param->sglen, param->length);
2336 /* FIRMWARE: iso sink */
2337 retval = test_queue(dev, param,
2338 dev->out_iso_pipe, dev->iso_out, 0);
2339 break;
2340
2341 /* iso read tests */
2342 case 16:
2343 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2344 break;
2345 dev_info(&intf->dev,
2346 "TEST 16: read %d iso, %d entries of %d bytes\n",
2347 param->iterations,
2348 param->sglen, param->length);
2349 /* FIRMWARE: iso source */
2350 retval = test_queue(dev, param,
2351 dev->in_iso_pipe, dev->iso_in, 0);
2352 break;
2353
2354 /* FIXME scatterlist cancel (needs helper thread) */
2355
2356 /* Tests for bulk I/O using DMA mapping by core and odd address */
2357 case 17:
2358 if (dev->out_pipe == 0)
2359 break;
2360 dev_info(&intf->dev,
2361 "TEST 17: write odd addr %d bytes %u times core map\n",
2362 param->length, param->iterations);
2363
2364 retval = test_unaligned_bulk(
2365 dev, dev->out_pipe,
2366 param->length, param->iterations,
2367 0, "test17");
2368 break;
2369
2370 case 18:
2371 if (dev->in_pipe == 0)
2372 break;
2373 dev_info(&intf->dev,
2374 "TEST 18: read odd addr %d bytes %u times core map\n",
2375 param->length, param->iterations);
2376
2377 retval = test_unaligned_bulk(
2378 dev, dev->in_pipe,
2379 param->length, param->iterations,
2380 0, "test18");
2381 break;
2382
2383 /* Tests for bulk I/O using premapped coherent buffer and odd address */
2384 case 19:
2385 if (dev->out_pipe == 0)
2386 break;
2387 dev_info(&intf->dev,
2388 "TEST 19: write odd addr %d bytes %u times premapped\n",
2389 param->length, param->iterations);
2390
2391 retval = test_unaligned_bulk(
2392 dev, dev->out_pipe,
2393 param->length, param->iterations,
2394 URB_NO_TRANSFER_DMA_MAP, "test19");
2395 break;
2396
2397 case 20:
2398 if (dev->in_pipe == 0)
2399 break;
2400 dev_info(&intf->dev,
2401 "TEST 20: read odd addr %d bytes %u times premapped\n",
2402 param->length, param->iterations);
2403
2404 retval = test_unaligned_bulk(
2405 dev, dev->in_pipe,
2406 param->length, param->iterations,
2407 URB_NO_TRANSFER_DMA_MAP, "test20");
2408 break;
2409
2410 /* control write tests with unaligned buffer */
2411 case 21:
2412 if (!dev->info->ctrl_out)
2413 break;
2414 dev_info(&intf->dev,
2415 "TEST 21: %d ep0out odd addr, %d..%d vary %d\n",
2416 param->iterations,
2417 realworld ? 1 : 0, param->length,
2418 param->vary);
2419 retval = ctrl_out(dev, param->iterations,
2420 param->length, param->vary, 1);
2421 break;
2422
2423 /* unaligned iso tests */
2424 case 22:
2425 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2426 break;
2427 dev_info(&intf->dev,
2428 "TEST 22: write %d iso odd, %d entries of %d bytes\n",
2429 param->iterations,
2430 param->sglen, param->length);
2431 retval = test_queue(dev, param,
2432 dev->out_iso_pipe, dev->iso_out, 1);
2433 break;
2434
2435 case 23:
2436 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2437 break;
2438 dev_info(&intf->dev,
2439 "TEST 23: read %d iso odd, %d entries of %d bytes\n",
2440 param->iterations,
2441 param->sglen, param->length);
2442 retval = test_queue(dev, param,
2443 dev->in_iso_pipe, dev->iso_in, 1);
2444 break;
2445
2446 /* unlink URBs from a bulk-OUT queue */
2447 case 24:
2448 if (dev->out_pipe == 0 || !param->length || param->sglen < 4)
2449 break;
2450 retval = 0;
2451 dev_info(&intf->dev, "TEST 24: unlink from %d queues of "
2452 "%d %d-byte writes\n",
2453 param->iterations, param->sglen, param->length);
2454 for (i = param->iterations; retval == 0 && i > 0; --i) {
2455 retval = unlink_queued(dev, dev->out_pipe,
2456 param->sglen, param->length);
2457 if (retval) {
2458 dev_err(&intf->dev,
2459 "unlink queued writes failed %d, "
2460 "iterations left %d\n", retval, i);
2461 break;
2462 }
2463 }
2464 break;
2465
2466 /* Simple non-queued interrupt I/O tests */
2467 case 25:
2468 if (dev->out_int_pipe == 0)
2469 break;
2470 dev_info(&intf->dev,
2471 "TEST 25: write %d bytes %u times\n",
2472 param->length, param->iterations);
2473 urb = simple_alloc_urb(udev, dev->out_int_pipe, param->length,
2474 dev->int_out->bInterval);
2475 if (!urb) {
2476 retval = -ENOMEM;
2477 break;
2478 }
2479 /* FIRMWARE: interrupt sink (maybe accepts short writes) */
2480 retval = simple_io(dev, urb, param->iterations, 0, 0, "test25");
2481 simple_free_urb(urb);
2482 break;
2483 case 26:
2484 if (dev->in_int_pipe == 0)
2485 break;
2486 dev_info(&intf->dev,
2487 "TEST 26: read %d bytes %u times\n",
2488 param->length, param->iterations);
2489 urb = simple_alloc_urb(udev, dev->in_int_pipe, param->length,
2490 dev->int_in->bInterval);
2491 if (!urb) {
2492 retval = -ENOMEM;
2493 break;
2494 }
2495 /* FIRMWARE: interrupt source (maybe generates short writes) */
2496 retval = simple_io(dev, urb, param->iterations, 0, 0, "test26");
2497 simple_free_urb(urb);
2498 break;
2499 case 27:
2500 /* We do performance test, so ignore data compare */
2501 if (dev->out_pipe == 0 || param->sglen == 0 || pattern != 0)
2502 break;
2503 dev_info(&intf->dev,
2504 "TEST 27: bulk write %dMbytes\n", (param->iterations *
2505 param->sglen * param->length) / (1024 * 1024));
2506 retval = test_queue(dev, param,
2507 dev->out_pipe, NULL, 0);
2508 break;
2509 case 28:
2510 if (dev->in_pipe == 0 || param->sglen == 0 || pattern != 0)
2511 break;
2512 dev_info(&intf->dev,
2513 "TEST 28: bulk read %dMbytes\n", (param->iterations *
2514 param->sglen * param->length) / (1024 * 1024));
2515 retval = test_queue(dev, param,
2516 dev->in_pipe, NULL, 0);
2517 break;
2518 }
2519 return retval;
2520 }
2521
2522 /*-------------------------------------------------------------------------*/
2523
2524 /* We only have this one interface to user space, through usbfs.
2525 * User mode code can scan usbfs to find N different devices (maybe on
2526 * different busses) to use when testing, and allocate one thread per
2527 * test. So discovery is simplified, and we have no device naming issues.
2528 *
2529 * Don't use these only as stress/load tests. Use them along with with
2530 * other USB bus activity: plugging, unplugging, mousing, mp3 playback,
2531 * video capture, and so on. Run different tests at different times, in
2532 * different sequences. Nothing here should interact with other devices,
2533 * except indirectly by consuming USB bandwidth and CPU resources for test
2534 * threads and request completion. But the only way to know that for sure
2535 * is to test when HC queues are in use by many devices.
2536 *
2537 * WARNING: Because usbfs grabs udev->dev.sem before calling this ioctl(),
2538 * it locks out usbcore in certain code paths. Notably, if you disconnect
2539 * the device-under-test, hub_wq will wait block forever waiting for the
2540 * ioctl to complete ... so that usb_disconnect() can abort the pending
2541 * urbs and then call usbtest_disconnect(). To abort a test, you're best
2542 * off just killing the userspace task and waiting for it to exit.
2543 */
2544
2545 static int
2546 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
2547 {
2548
2549 struct usbtest_dev *dev = usb_get_intfdata(intf);
2550 struct usbtest_param_64 *param_64 = buf;
2551 struct usbtest_param_32 temp;
2552 struct usbtest_param_32 *param_32 = buf;
2553 struct timespec64 start;
2554 struct timespec64 end;
2555 struct timespec64 duration;
2556 int retval = -EOPNOTSUPP;
2557
2558 /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */
2559
2560 pattern = mod_pattern;
2561
2562 if (mutex_lock_interruptible(&dev->lock))
2563 return -ERESTARTSYS;
2564
2565 /* FIXME: What if a system sleep starts while a test is running? */
2566
2567 /* some devices, like ez-usb default devices, need a non-default
2568 * altsetting to have any active endpoints. some tests change
2569 * altsettings; force a default so most tests don't need to check.
2570 */
2571 if (dev->info->alt >= 0) {
2572 if (intf->altsetting->desc.bInterfaceNumber) {
2573 retval = -ENODEV;
2574 goto free_mutex;
2575 }
2576 retval = set_altsetting(dev, dev->info->alt);
2577 if (retval) {
2578 dev_err(&intf->dev,
2579 "set altsetting to %d failed, %d\n",
2580 dev->info->alt, retval);
2581 goto free_mutex;
2582 }
2583 }
2584
2585 switch (code) {
2586 case USBTEST_REQUEST_64:
2587 temp.test_num = param_64->test_num;
2588 temp.iterations = param_64->iterations;
2589 temp.length = param_64->length;
2590 temp.sglen = param_64->sglen;
2591 temp.vary = param_64->vary;
2592 param_32 = &temp;
2593 break;
2594
2595 case USBTEST_REQUEST_32:
2596 break;
2597
2598 default:
2599 retval = -EOPNOTSUPP;
2600 goto free_mutex;
2601 }
2602
2603 ktime_get_ts64(&start);
2604
2605 retval = usbtest_do_ioctl(intf, param_32);
2606 if (retval < 0)
2607 goto free_mutex;
2608
2609 ktime_get_ts64(&end);
2610
2611 duration = timespec64_sub(end, start);
2612
2613 temp.duration_sec = duration.tv_sec;
2614 temp.duration_usec = duration.tv_nsec/NSEC_PER_USEC;
2615
2616 switch (code) {
2617 case USBTEST_REQUEST_32:
2618 param_32->duration_sec = temp.duration_sec;
2619 param_32->duration_usec = temp.duration_usec;
2620 break;
2621
2622 case USBTEST_REQUEST_64:
2623 param_64->duration_sec = temp.duration_sec;
2624 param_64->duration_usec = temp.duration_usec;
2625 break;
2626 }
2627
2628 free_mutex:
2629 mutex_unlock(&dev->lock);
2630 return retval;
2631 }
2632
2633 /*-------------------------------------------------------------------------*/
2634
2635 static unsigned force_interrupt;
2636 module_param(force_interrupt, uint, 0);
2637 MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt");
2638
2639 #ifdef GENERIC
2640 static unsigned short vendor;
2641 module_param(vendor, ushort, 0);
2642 MODULE_PARM_DESC(vendor, "vendor code (from usb-if)");
2643
2644 static unsigned short product;
2645 module_param(product, ushort, 0);
2646 MODULE_PARM_DESC(product, "product code (from vendor)");
2647 #endif
2648
2649 static int
2650 usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
2651 {
2652 struct usb_device *udev;
2653 struct usbtest_dev *dev;
2654 struct usbtest_info *info;
2655 char *rtest, *wtest;
2656 char *irtest, *iwtest;
2657 char *intrtest, *intwtest;
2658
2659 udev = interface_to_usbdev(intf);
2660
2661 #ifdef GENERIC
2662 /* specify devices by module parameters? */
2663 if (id->match_flags == 0) {
2664 /* vendor match required, product match optional */
2665 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor)
2666 return -ENODEV;
2667 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product)
2668 return -ENODEV;
2669 dev_info(&intf->dev, "matched module params, "
2670 "vend=0x%04x prod=0x%04x\n",
2671 le16_to_cpu(udev->descriptor.idVendor),
2672 le16_to_cpu(udev->descriptor.idProduct));
2673 }
2674 #endif
2675
2676 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2677 if (!dev)
2678 return -ENOMEM;
2679 info = (struct usbtest_info *) id->driver_info;
2680 dev->info = info;
2681 mutex_init(&dev->lock);
2682
2683 dev->intf = intf;
2684
2685 /* cacheline-aligned scratch for i/o */
2686 dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL);
2687 if (dev->buf == NULL) {
2688 kfree(dev);
2689 return -ENOMEM;
2690 }
2691
2692 /* NOTE this doesn't yet test the handful of difference that are
2693 * visible with high speed interrupts: bigger maxpacket (1K) and
2694 * "high bandwidth" modes (up to 3 packets/uframe).
2695 */
2696 rtest = wtest = "";
2697 irtest = iwtest = "";
2698 intrtest = intwtest = "";
2699 if (force_interrupt || udev->speed == USB_SPEED_LOW) {
2700 if (info->ep_in) {
2701 dev->in_pipe = usb_rcvintpipe(udev, info->ep_in);
2702 rtest = " intr-in";
2703 }
2704 if (info->ep_out) {
2705 dev->out_pipe = usb_sndintpipe(udev, info->ep_out);
2706 wtest = " intr-out";
2707 }
2708 } else {
2709 if (override_alt >= 0 || info->autoconf) {
2710 int status;
2711
2712 status = get_endpoints(dev, intf);
2713 if (status < 0) {
2714 WARNING(dev, "couldn't get endpoints, %d\n",
2715 status);
2716 kfree(dev->buf);
2717 kfree(dev);
2718 return status;
2719 }
2720 /* may find bulk or ISO pipes */
2721 } else {
2722 if (info->ep_in)
2723 dev->in_pipe = usb_rcvbulkpipe(udev,
2724 info->ep_in);
2725 if (info->ep_out)
2726 dev->out_pipe = usb_sndbulkpipe(udev,
2727 info->ep_out);
2728 }
2729 if (dev->in_pipe)
2730 rtest = " bulk-in";
2731 if (dev->out_pipe)
2732 wtest = " bulk-out";
2733 if (dev->in_iso_pipe)
2734 irtest = " iso-in";
2735 if (dev->out_iso_pipe)
2736 iwtest = " iso-out";
2737 if (dev->in_int_pipe)
2738 intrtest = " int-in";
2739 if (dev->out_int_pipe)
2740 intwtest = " int-out";
2741 }
2742
2743 usb_set_intfdata(intf, dev);
2744 dev_info(&intf->dev, "%s\n", info->name);
2745 dev_info(&intf->dev, "%s {control%s%s%s%s%s%s%s} tests%s\n",
2746 usb_speed_string(udev->speed),
2747 info->ctrl_out ? " in/out" : "",
2748 rtest, wtest,
2749 irtest, iwtest,
2750 intrtest, intwtest,
2751 info->alt >= 0 ? " (+alt)" : "");
2752 return 0;
2753 }
2754
2755 static int usbtest_suspend(struct usb_interface *intf, pm_message_t message)
2756 {
2757 return 0;
2758 }
2759
2760 static int usbtest_resume(struct usb_interface *intf)
2761 {
2762 return 0;
2763 }
2764
2765
2766 static void usbtest_disconnect(struct usb_interface *intf)
2767 {
2768 struct usbtest_dev *dev = usb_get_intfdata(intf);
2769
2770 usb_set_intfdata(intf, NULL);
2771 dev_dbg(&intf->dev, "disconnect\n");
2772 kfree(dev);
2773 }
2774
2775 /* Basic testing only needs a device that can source or sink bulk traffic.
2776 * Any device can test control transfers (default with GENERIC binding).
2777 *
2778 * Several entries work with the default EP0 implementation that's built
2779 * into EZ-USB chips. There's a default vendor ID which can be overridden
2780 * by (very) small config EEPROMS, but otherwise all these devices act
2781 * identically until firmware is loaded: only EP0 works. It turns out
2782 * to be easy to make other endpoints work, without modifying that EP0
2783 * behavior. For now, we expect that kind of firmware.
2784 */
2785
2786 /* an21xx or fx versions of ez-usb */
2787 static struct usbtest_info ez1_info = {
2788 .name = "EZ-USB device",
2789 .ep_in = 2,
2790 .ep_out = 2,
2791 .alt = 1,
2792 };
2793
2794 /* fx2 version of ez-usb */
2795 static struct usbtest_info ez2_info = {
2796 .name = "FX2 device",
2797 .ep_in = 6,
2798 .ep_out = 2,
2799 .alt = 1,
2800 };
2801
2802 /* ezusb family device with dedicated usb test firmware,
2803 */
2804 static struct usbtest_info fw_info = {
2805 .name = "usb test device",
2806 .ep_in = 2,
2807 .ep_out = 2,
2808 .alt = 1,
2809 .autoconf = 1, /* iso and ctrl_out need autoconf */
2810 .ctrl_out = 1,
2811 .iso = 1, /* iso_ep's are #8 in/out */
2812 };
2813
2814 /* peripheral running Linux and 'zero.c' test firmware, or
2815 * its user-mode cousin. different versions of this use
2816 * different hardware with the same vendor/product codes.
2817 * host side MUST rely on the endpoint descriptors.
2818 */
2819 static struct usbtest_info gz_info = {
2820 .name = "Linux gadget zero",
2821 .autoconf = 1,
2822 .ctrl_out = 1,
2823 .iso = 1,
2824 .intr = 1,
2825 .alt = 0,
2826 };
2827
2828 static struct usbtest_info um_info = {
2829 .name = "Linux user mode test driver",
2830 .autoconf = 1,
2831 .alt = -1,
2832 };
2833
2834 static struct usbtest_info um2_info = {
2835 .name = "Linux user mode ISO test driver",
2836 .autoconf = 1,
2837 .iso = 1,
2838 .alt = -1,
2839 };
2840
2841 #ifdef IBOT2
2842 /* this is a nice source of high speed bulk data;
2843 * uses an FX2, with firmware provided in the device
2844 */
2845 static struct usbtest_info ibot2_info = {
2846 .name = "iBOT2 webcam",
2847 .ep_in = 2,
2848 .alt = -1,
2849 };
2850 #endif
2851
2852 #ifdef GENERIC
2853 /* we can use any device to test control traffic */
2854 static struct usbtest_info generic_info = {
2855 .name = "Generic USB device",
2856 .alt = -1,
2857 };
2858 #endif
2859
2860
2861 static const struct usb_device_id id_table[] = {
2862
2863 /*-------------------------------------------------------------*/
2864
2865 /* EZ-USB devices which download firmware to replace (or in our
2866 * case augment) the default device implementation.
2867 */
2868
2869 /* generic EZ-USB FX controller */
2870 { USB_DEVICE(0x0547, 0x2235),
2871 .driver_info = (unsigned long) &ez1_info,
2872 },
2873
2874 /* CY3671 development board with EZ-USB FX */
2875 { USB_DEVICE(0x0547, 0x0080),
2876 .driver_info = (unsigned long) &ez1_info,
2877 },
2878
2879 /* generic EZ-USB FX2 controller (or development board) */
2880 { USB_DEVICE(0x04b4, 0x8613),
2881 .driver_info = (unsigned long) &ez2_info,
2882 },
2883
2884 /* re-enumerated usb test device firmware */
2885 { USB_DEVICE(0xfff0, 0xfff0),
2886 .driver_info = (unsigned long) &fw_info,
2887 },
2888
2889 /* "Gadget Zero" firmware runs under Linux */
2890 { USB_DEVICE(0x0525, 0xa4a0),
2891 .driver_info = (unsigned long) &gz_info,
2892 },
2893
2894 /* so does a user-mode variant */
2895 { USB_DEVICE(0x0525, 0xa4a4),
2896 .driver_info = (unsigned long) &um_info,
2897 },
2898
2899 /* ... and a user-mode variant that talks iso */
2900 { USB_DEVICE(0x0525, 0xa4a3),
2901 .driver_info = (unsigned long) &um2_info,
2902 },
2903
2904 #ifdef KEYSPAN_19Qi
2905 /* Keyspan 19qi uses an21xx (original EZ-USB) */
2906 /* this does not coexist with the real Keyspan 19qi driver! */
2907 { USB_DEVICE(0x06cd, 0x010b),
2908 .driver_info = (unsigned long) &ez1_info,
2909 },
2910 #endif
2911
2912 /*-------------------------------------------------------------*/
2913
2914 #ifdef IBOT2
2915 /* iBOT2 makes a nice source of high speed bulk-in data */
2916 /* this does not coexist with a real iBOT2 driver! */
2917 { USB_DEVICE(0x0b62, 0x0059),
2918 .driver_info = (unsigned long) &ibot2_info,
2919 },
2920 #endif
2921
2922 /*-------------------------------------------------------------*/
2923
2924 #ifdef GENERIC
2925 /* module params can specify devices to use for control tests */
2926 { .driver_info = (unsigned long) &generic_info, },
2927 #endif
2928
2929 /*-------------------------------------------------------------*/
2930
2931 { }
2932 };
2933 MODULE_DEVICE_TABLE(usb, id_table);
2934
2935 static struct usb_driver usbtest_driver = {
2936 .name = "usbtest",
2937 .id_table = id_table,
2938 .probe = usbtest_probe,
2939 .unlocked_ioctl = usbtest_ioctl,
2940 .disconnect = usbtest_disconnect,
2941 .suspend = usbtest_suspend,
2942 .resume = usbtest_resume,
2943 };
2944
2945 /*-------------------------------------------------------------------------*/
2946
2947 static int __init usbtest_init(void)
2948 {
2949 #ifdef GENERIC
2950 if (vendor)
2951 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product);
2952 #endif
2953 return usb_register(&usbtest_driver);
2954 }
2955 module_init(usbtest_init);
2956
2957 static void __exit usbtest_exit(void)
2958 {
2959 usb_deregister(&usbtest_driver);
2960 }
2961 module_exit(usbtest_exit);
2962
2963 MODULE_DESCRIPTION("USB Core/HCD Testing Driver");
2964 MODULE_LICENSE("GPL");
2965
Linux kernel - Deliverables
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