1 #include <linux/kernel.h>
2 #include <linux/errno.h>
3 #include <linux/init.h>
4 #include <linux/slab.h>
6 #include <linux/module.h>
7 #include <linux/moduleparam.h>
8 #include <linux/scatterlist.h>
9 #include <linux/mutex.h>
11 #include <linux/usb.h>
13 #define SIMPLE_IO_TIMEOUT 10000 /* in milliseconds */
15 /*-------------------------------------------------------------------------*/
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");
21 /*-------------------------------------------------------------------------*/
23 /* FIXME make these public somewhere; usbdevfs.h? */
24 struct usbtest_param {
26 unsigned test_num; /* 0..(TEST_CASES-1) */
33 struct timeval duration;
35 #define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param)
37 /*-------------------------------------------------------------------------*/
39 #define GENERIC /* let probe() bind using module params */
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
45 //#define IBOT2 /* grab iBOT2 webcams */
46 //#define KEYSPAN_19Qi /* grab un-renumerated serial adapter */
48 /*-------------------------------------------------------------------------*/
52 u8 ep_in; /* bulk/intr source */
53 u8 ep_out; /* bulk/intr sink */
56 unsigned iso:1; /* try iso in/out */
60 /* this is accessed only through usbfs ioctl calls.
61 * one ioctl to issue a test ... one lock per device.
62 * tests create other threads if they need them.
63 * urbs and buffers are allocated dynamically,
64 * and data generated deterministically.
67 struct usb_interface *intf;
68 struct usbtest_info *info;
73 struct usb_endpoint_descriptor *iso_in, *iso_out;
80 static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test)
82 return interface_to_usbdev(test->intf);
85 /* set up all urbs so they can be used with either bulk or interrupt */
86 #define INTERRUPT_RATE 1 /* msec/transfer */
88 #define ERROR(tdev, fmt, args...) \
89 dev_err(&(tdev)->intf->dev , fmt , ## args)
90 #define WARNING(tdev, fmt, args...) \
91 dev_warn(&(tdev)->intf->dev , fmt , ## args)
93 #define GUARD_BYTE 0xA5
95 /*-------------------------------------------------------------------------*/
98 get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf)
101 struct usb_host_interface *alt;
102 struct usb_host_endpoint *in, *out;
103 struct usb_host_endpoint *iso_in, *iso_out;
104 struct usb_device *udev;
106 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
110 iso_in = iso_out = NULL;
111 alt = intf->altsetting + tmp;
113 if (override_alt >= 0 &&
114 override_alt != alt->desc.bAlternateSetting)
117 /* take the first altsetting with in-bulk + out-bulk;
118 * ignore other endpoints and altsettings.
120 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
121 struct usb_host_endpoint *e;
123 e = alt->endpoint + ep;
124 switch (usb_endpoint_type(&e->desc)) {
125 case USB_ENDPOINT_XFER_BULK:
127 case USB_ENDPOINT_XFER_ISOC:
134 if (usb_endpoint_dir_in(&e->desc)) {
143 if (usb_endpoint_dir_in(&e->desc)) {
151 if ((in && out) || iso_in || iso_out)
157 udev = testdev_to_usbdev(dev);
158 dev->info->alt = alt->desc.bAlternateSetting;
159 if (alt->desc.bAlternateSetting != 0) {
160 tmp = usb_set_interface(udev,
161 alt->desc.bInterfaceNumber,
162 alt->desc.bAlternateSetting);
168 dev->in_pipe = usb_rcvbulkpipe(udev,
169 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
170 dev->out_pipe = usb_sndbulkpipe(udev,
171 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
174 dev->iso_in = &iso_in->desc;
175 dev->in_iso_pipe = usb_rcvisocpipe(udev,
176 iso_in->desc.bEndpointAddress
177 & USB_ENDPOINT_NUMBER_MASK);
181 dev->iso_out = &iso_out->desc;
182 dev->out_iso_pipe = usb_sndisocpipe(udev,
183 iso_out->desc.bEndpointAddress
184 & USB_ENDPOINT_NUMBER_MASK);
189 /*-------------------------------------------------------------------------*/
191 /* Support for testing basic non-queued I/O streams.
193 * These just package urbs as requests that can be easily canceled.
194 * Each urb's data buffer is dynamically allocated; callers can fill
195 * them with non-zero test data (or test for it) when appropriate.
198 static void simple_callback(struct urb *urb)
200 complete(urb->context);
203 static struct urb *usbtest_alloc_urb(
204 struct usb_device *udev,
207 unsigned transfer_flags,
212 urb = usb_alloc_urb(0, GFP_KERNEL);
215 usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, simple_callback, NULL);
216 urb->interval = (udev->speed == USB_SPEED_HIGH)
217 ? (INTERRUPT_RATE << 3)
219 urb->transfer_flags = transfer_flags;
220 if (usb_pipein(pipe))
221 urb->transfer_flags |= URB_SHORT_NOT_OK;
223 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
224 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
225 GFP_KERNEL, &urb->transfer_dma);
227 urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL);
229 if (!urb->transfer_buffer) {
234 /* To test unaligned transfers add an offset and fill the
235 unused memory with a guard value */
237 memset(urb->transfer_buffer, GUARD_BYTE, offset);
238 urb->transfer_buffer += offset;
239 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
240 urb->transfer_dma += offset;
243 /* For inbound transfers use guard byte so that test fails if
244 data not correctly copied */
245 memset(urb->transfer_buffer,
246 usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
251 static struct urb *simple_alloc_urb(
252 struct usb_device *udev,
256 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0);
259 static unsigned pattern;
260 static unsigned mod_pattern;
261 module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR);
262 MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)");
264 static inline void simple_fill_buf(struct urb *urb)
267 u8 *buf = urb->transfer_buffer;
268 unsigned len = urb->transfer_buffer_length;
277 for (i = 0; i < len; i++)
278 *buf++ = (u8) (i % 63);
283 static inline unsigned long buffer_offset(void *buf)
285 return (unsigned long)buf & (ARCH_KMALLOC_MINALIGN - 1);
288 static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb)
290 u8 *buf = urb->transfer_buffer;
291 u8 *guard = buf - buffer_offset(buf);
294 for (i = 0; guard < buf; i++, guard++) {
295 if (*guard != GUARD_BYTE) {
296 ERROR(tdev, "guard byte[%d] %d (not %d)\n",
297 i, *guard, GUARD_BYTE);
304 static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb)
308 u8 *buf = urb->transfer_buffer;
309 unsigned len = urb->actual_length;
311 int ret = check_guard_bytes(tdev, urb);
315 for (i = 0; i < len; i++, buf++) {
317 /* all-zeroes has no synchronization issues */
321 /* mod63 stays in sync with short-terminated transfers,
322 * or otherwise when host and gadget agree on how large
323 * each usb transfer request should be. resync is done
324 * with set_interface or set_config.
329 /* always fail unsupported patterns */
334 if (*buf == expected)
336 ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected);
342 static void simple_free_urb(struct urb *urb)
344 unsigned long offset = buffer_offset(urb->transfer_buffer);
346 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
349 urb->transfer_buffer_length + offset,
350 urb->transfer_buffer - offset,
351 urb->transfer_dma - offset);
353 kfree(urb->transfer_buffer - offset);
357 static int simple_io(
358 struct usbtest_dev *tdev,
366 struct usb_device *udev = urb->dev;
367 int max = urb->transfer_buffer_length;
368 struct completion completion;
370 unsigned long expire;
372 urb->context = &completion;
373 while (retval == 0 && iterations-- > 0) {
374 init_completion(&completion);
375 if (usb_pipeout(urb->pipe)) {
376 simple_fill_buf(urb);
377 urb->transfer_flags |= URB_ZERO_PACKET;
379 retval = usb_submit_urb(urb, GFP_KERNEL);
383 expire = msecs_to_jiffies(SIMPLE_IO_TIMEOUT);
384 if (!wait_for_completion_timeout(&completion, expire)) {
386 retval = (urb->status == -ENOENT ?
387 -ETIMEDOUT : urb->status);
389 retval = urb->status;
393 if (retval == 0 && usb_pipein(urb->pipe))
394 retval = simple_check_buf(tdev, urb);
397 int len = urb->transfer_buffer_length;
402 len = (vary < max) ? vary : max;
403 urb->transfer_buffer_length = len;
406 /* FIXME if endpoint halted, clear halt (and log) */
408 urb->transfer_buffer_length = max;
410 if (expected != retval)
412 "%s failed, iterations left %d, status %d (not %d)\n",
413 label, iterations, retval, expected);
418 /*-------------------------------------------------------------------------*/
420 /* We use scatterlist primitives to test queued I/O.
421 * Yes, this also tests the scatterlist primitives.
424 static void free_sglist(struct scatterlist *sg, int nents)
430 for (i = 0; i < nents; i++) {
431 if (!sg_page(&sg[i]))
433 kfree(sg_virt(&sg[i]));
438 static struct scatterlist *
439 alloc_sglist(int nents, int max, int vary)
441 struct scatterlist *sg;
448 sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL);
451 sg_init_table(sg, nents);
453 for (i = 0; i < nents; i++) {
457 buf = kzalloc(size, GFP_KERNEL);
463 /* kmalloc pages are always physically contiguous! */
464 sg_set_buf(&sg[i], buf, size);
471 for (j = 0; j < size; j++)
472 *buf++ = (u8) (j % 63);
480 size = (vary < max) ? vary : max;
487 static int perform_sglist(
488 struct usbtest_dev *tdev,
491 struct usb_sg_request *req,
492 struct scatterlist *sg,
496 struct usb_device *udev = testdev_to_usbdev(tdev);
499 while (retval == 0 && iterations-- > 0) {
500 retval = usb_sg_init(req, udev, pipe,
501 (udev->speed == USB_SPEED_HIGH)
502 ? (INTERRUPT_RATE << 3)
504 sg, nents, 0, GFP_KERNEL);
509 retval = req->status;
511 /* FIXME check resulting data pattern */
513 /* FIXME if endpoint halted, clear halt (and log) */
516 /* FIXME for unlink or fault handling tests, don't report
517 * failure if retval is as we expected ...
520 ERROR(tdev, "perform_sglist failed, "
521 "iterations left %d, status %d\n",
527 /*-------------------------------------------------------------------------*/
529 /* unqueued control message testing
531 * there's a nice set of device functional requirements in chapter 9 of the
532 * usb 2.0 spec, which we can apply to ANY device, even ones that don't use
533 * special test firmware.
535 * we know the device is configured (or suspended) by the time it's visible
536 * through usbfs. we can't change that, so we won't test enumeration (which
537 * worked 'well enough' to get here, this time), power management (ditto),
538 * or remote wakeup (which needs human interaction).
541 static unsigned realworld = 1;
542 module_param(realworld, uint, 0);
543 MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance");
545 static int get_altsetting(struct usbtest_dev *dev)
547 struct usb_interface *iface = dev->intf;
548 struct usb_device *udev = interface_to_usbdev(iface);
551 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
552 USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE,
553 0, iface->altsetting[0].desc.bInterfaceNumber,
554 dev->buf, 1, USB_CTRL_GET_TIMEOUT);
566 static int set_altsetting(struct usbtest_dev *dev, int alternate)
568 struct usb_interface *iface = dev->intf;
569 struct usb_device *udev;
571 if (alternate < 0 || alternate >= 256)
574 udev = interface_to_usbdev(iface);
575 return usb_set_interface(udev,
576 iface->altsetting[0].desc.bInterfaceNumber,
580 static int is_good_config(struct usbtest_dev *tdev, int len)
582 struct usb_config_descriptor *config;
584 if (len < sizeof(*config))
586 config = (struct usb_config_descriptor *) tdev->buf;
588 switch (config->bDescriptorType) {
590 case USB_DT_OTHER_SPEED_CONFIG:
591 if (config->bLength != 9) {
592 ERROR(tdev, "bogus config descriptor length\n");
595 /* this bit 'must be 1' but often isn't */
596 if (!realworld && !(config->bmAttributes & 0x80)) {
597 ERROR(tdev, "high bit of config attributes not set\n");
600 if (config->bmAttributes & 0x1f) { /* reserved == 0 */
601 ERROR(tdev, "reserved config bits set\n");
609 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */
611 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */
613 ERROR(tdev, "bogus config descriptor read size\n");
617 static int is_good_ext(struct usbtest_dev *tdev, u8 *buf)
619 struct usb_ext_cap_descriptor *ext;
622 ext = (struct usb_ext_cap_descriptor *) buf;
624 if (ext->bLength != USB_DT_USB_EXT_CAP_SIZE) {
625 ERROR(tdev, "bogus usb 2.0 extension descriptor length\n");
629 attr = le32_to_cpu(ext->bmAttributes);
630 /* bits[1:15] is used and others are reserved */
631 if (attr & ~0xfffe) { /* reserved == 0 */
632 ERROR(tdev, "reserved bits set\n");
639 static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf)
641 struct usb_ss_cap_descriptor *ss;
643 ss = (struct usb_ss_cap_descriptor *) buf;
645 if (ss->bLength != USB_DT_USB_SS_CAP_SIZE) {
646 ERROR(tdev, "bogus superspeed device capability descriptor length\n");
651 * only bit[1] of bmAttributes is used for LTM and others are
654 if (ss->bmAttributes & ~0x02) { /* reserved == 0 */
655 ERROR(tdev, "reserved bits set in bmAttributes\n");
659 /* bits[0:3] of wSpeedSupported is used and others are reserved */
660 if (le16_to_cpu(ss->wSpeedSupported) & ~0x0f) { /* reserved == 0 */
661 ERROR(tdev, "reserved bits set in wSpeedSupported\n");
668 static int is_good_con_id(struct usbtest_dev *tdev, u8 *buf)
670 struct usb_ss_container_id_descriptor *con_id;
672 con_id = (struct usb_ss_container_id_descriptor *) buf;
674 if (con_id->bLength != USB_DT_USB_SS_CONTN_ID_SIZE) {
675 ERROR(tdev, "bogus container id descriptor length\n");
679 if (con_id->bReserved) { /* reserved == 0 */
680 ERROR(tdev, "reserved bits set\n");
687 /* sanity test for standard requests working with usb_control_mesg() and some
688 * of the utility functions which use it.
690 * this doesn't test how endpoint halts behave or data toggles get set, since
691 * we won't do I/O to bulk/interrupt endpoints here (which is how to change
692 * halt or toggle). toggle testing is impractical without support from hcds.
694 * this avoids failing devices linux would normally work with, by not testing
695 * config/altsetting operations for devices that only support their defaults.
696 * such devices rarely support those needless operations.
698 * NOTE that since this is a sanity test, it's not examining boundary cases
699 * to see if usbcore, hcd, and device all behave right. such testing would
700 * involve varied read sizes and other operation sequences.
702 static int ch9_postconfig(struct usbtest_dev *dev)
704 struct usb_interface *iface = dev->intf;
705 struct usb_device *udev = interface_to_usbdev(iface);
708 /* [9.2.3] if there's more than one altsetting, we need to be able to
709 * set and get each one. mostly trusts the descriptors from usbcore.
711 for (i = 0; i < iface->num_altsetting; i++) {
713 /* 9.2.3 constrains the range here */
714 alt = iface->altsetting[i].desc.bAlternateSetting;
715 if (alt < 0 || alt >= iface->num_altsetting) {
717 "invalid alt [%d].bAltSetting = %d\n",
721 /* [real world] get/set unimplemented if there's only one */
722 if (realworld && iface->num_altsetting == 1)
725 /* [9.4.10] set_interface */
726 retval = set_altsetting(dev, alt);
728 dev_err(&iface->dev, "can't set_interface = %d, %d\n",
733 /* [9.4.4] get_interface always works */
734 retval = get_altsetting(dev);
736 dev_err(&iface->dev, "get alt should be %d, was %d\n",
738 return (retval < 0) ? retval : -EDOM;
743 /* [real world] get_config unimplemented if there's only one */
744 if (!realworld || udev->descriptor.bNumConfigurations != 1) {
745 int expected = udev->actconfig->desc.bConfigurationValue;
747 /* [9.4.2] get_configuration always works
748 * ... although some cheap devices (like one TI Hub I've got)
749 * won't return config descriptors except before set_config.
751 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
752 USB_REQ_GET_CONFIGURATION,
753 USB_DIR_IN | USB_RECIP_DEVICE,
754 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);
755 if (retval != 1 || dev->buf[0] != expected) {
756 dev_err(&iface->dev, "get config --> %d %d (1 %d)\n",
757 retval, dev->buf[0], expected);
758 return (retval < 0) ? retval : -EDOM;
762 /* there's always [9.4.3] a device descriptor [9.6.1] */
763 retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0,
764 dev->buf, sizeof(udev->descriptor));
765 if (retval != sizeof(udev->descriptor)) {
766 dev_err(&iface->dev, "dev descriptor --> %d\n", retval);
767 return (retval < 0) ? retval : -EDOM;
771 * there's always [9.4.3] a bos device descriptor [9.6.2] in USB
774 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0210) {
775 struct usb_bos_descriptor *bos = NULL;
776 struct usb_dev_cap_header *header = NULL;
777 unsigned total, num, length;
780 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
781 sizeof(*udev->bos->desc));
782 if (retval != sizeof(*udev->bos->desc)) {
783 dev_err(&iface->dev, "bos descriptor --> %d\n", retval);
784 return (retval < 0) ? retval : -EDOM;
787 bos = (struct usb_bos_descriptor *)dev->buf;
788 total = le16_to_cpu(bos->wTotalLength);
789 num = bos->bNumDeviceCaps;
791 if (total > TBUF_SIZE)
795 * get generic device-level capability descriptors [9.6.2]
798 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
800 if (retval != total) {
801 dev_err(&iface->dev, "bos descriptor set --> %d\n",
803 return (retval < 0) ? retval : -EDOM;
806 length = sizeof(*udev->bos->desc);
808 for (i = 0; i < num; i++) {
810 if (buf + sizeof(struct usb_dev_cap_header) >
814 header = (struct usb_dev_cap_header *)buf;
815 length = header->bLength;
817 if (header->bDescriptorType !=
818 USB_DT_DEVICE_CAPABILITY) {
819 dev_warn(&udev->dev, "not device capability descriptor, skip\n");
823 switch (header->bDevCapabilityType) {
824 case USB_CAP_TYPE_EXT:
825 if (buf + USB_DT_USB_EXT_CAP_SIZE >
827 !is_good_ext(dev, buf)) {
828 dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n");
832 case USB_SS_CAP_TYPE:
833 if (buf + USB_DT_USB_SS_CAP_SIZE >
835 !is_good_ss_cap(dev, buf)) {
836 dev_err(&iface->dev, "bogus superspeed device capability descriptor\n");
840 case CONTAINER_ID_TYPE:
841 if (buf + USB_DT_USB_SS_CONTN_ID_SIZE >
843 !is_good_con_id(dev, buf)) {
844 dev_err(&iface->dev, "bogus container id descriptor\n");
854 /* there's always [9.4.3] at least one config descriptor [9.6.3] */
855 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
856 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i,
857 dev->buf, TBUF_SIZE);
858 if (!is_good_config(dev, retval)) {
860 "config [%d] descriptor --> %d\n",
862 return (retval < 0) ? retval : -EDOM;
865 /* FIXME cross-checking udev->config[i] to make sure usbcore
866 * parsed it right (etc) would be good testing paranoia
870 /* and sometimes [9.2.6.6] speed dependent descriptors */
871 if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) {
872 struct usb_qualifier_descriptor *d = NULL;
874 /* device qualifier [9.6.2] */
875 retval = usb_get_descriptor(udev,
876 USB_DT_DEVICE_QUALIFIER, 0, dev->buf,
877 sizeof(struct usb_qualifier_descriptor));
878 if (retval == -EPIPE) {
879 if (udev->speed == USB_SPEED_HIGH) {
881 "hs dev qualifier --> %d\n",
883 return (retval < 0) ? retval : -EDOM;
885 /* usb2.0 but not high-speed capable; fine */
886 } else if (retval != sizeof(struct usb_qualifier_descriptor)) {
887 dev_err(&iface->dev, "dev qualifier --> %d\n", retval);
888 return (retval < 0) ? retval : -EDOM;
890 d = (struct usb_qualifier_descriptor *) dev->buf;
892 /* might not have [9.6.2] any other-speed configs [9.6.4] */
894 unsigned max = d->bNumConfigurations;
895 for (i = 0; i < max; i++) {
896 retval = usb_get_descriptor(udev,
897 USB_DT_OTHER_SPEED_CONFIG, i,
898 dev->buf, TBUF_SIZE);
899 if (!is_good_config(dev, retval)) {
901 "other speed config --> %d\n",
903 return (retval < 0) ? retval : -EDOM;
908 /* FIXME fetch strings from at least the device descriptor */
910 /* [9.4.5] get_status always works */
911 retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf);
913 dev_err(&iface->dev, "get dev status --> %d\n", retval);
917 /* FIXME configuration.bmAttributes says if we could try to set/clear
918 * the device's remote wakeup feature ... if we can, test that here
921 retval = usb_get_status(udev, USB_RECIP_INTERFACE,
922 iface->altsetting[0].desc.bInterfaceNumber, dev->buf);
924 dev_err(&iface->dev, "get interface status --> %d\n", retval);
927 /* FIXME get status for each endpoint in the interface */
932 /*-------------------------------------------------------------------------*/
934 /* use ch9 requests to test whether:
935 * (a) queues work for control, keeping N subtests queued and
936 * active (auto-resubmit) for M loops through the queue.
937 * (b) protocol stalls (control-only) will autorecover.
938 * it's not like bulk/intr; no halt clearing.
939 * (c) short control reads are reported and handled.
940 * (d) queues are always processed in-order
945 struct usbtest_dev *dev;
946 struct completion complete;
951 struct usbtest_param *param;
955 #define NUM_SUBCASES 16 /* how many test subcases here? */
958 struct usb_ctrlrequest setup;
963 static void ctrl_complete(struct urb *urb)
965 struct ctrl_ctx *ctx = urb->context;
966 struct usb_ctrlrequest *reqp;
967 struct subcase *subcase;
968 int status = urb->status;
970 reqp = (struct usb_ctrlrequest *)urb->setup_packet;
971 subcase = container_of(reqp, struct subcase, setup);
973 spin_lock(&ctx->lock);
977 /* queue must transfer and complete in fifo order, unless
978 * usb_unlink_urb() is used to unlink something not at the
979 * physical queue head (not tested).
981 if (subcase->number > 0) {
982 if ((subcase->number - ctx->last) != 1) {
984 "subcase %d completed out of order, last %d\n",
985 subcase->number, ctx->last);
987 ctx->last = subcase->number;
991 ctx->last = subcase->number;
993 /* succeed or fault in only one way? */
994 if (status == subcase->expected)
997 /* async unlink for cleanup? */
998 else if (status != -ECONNRESET) {
1000 /* some faults are allowed, not required */
1001 if (subcase->expected > 0 && (
1002 ((status == -subcase->expected /* happened */
1003 || status == 0)))) /* didn't */
1005 /* sometimes more than one fault is allowed */
1006 else if (subcase->number == 12 && status == -EPIPE)
1009 ERROR(ctx->dev, "subtest %d error, status %d\n",
1010 subcase->number, status);
1013 /* unexpected status codes mean errors; ideally, in hardware */
1016 if (ctx->status == 0) {
1019 ctx->status = status;
1020 ERROR(ctx->dev, "control queue %02x.%02x, err %d, "
1021 "%d left, subcase %d, len %d/%d\n",
1022 reqp->bRequestType, reqp->bRequest,
1023 status, ctx->count, subcase->number,
1025 urb->transfer_buffer_length);
1027 /* FIXME this "unlink everything" exit route should
1028 * be a separate test case.
1031 /* unlink whatever's still pending */
1032 for (i = 1; i < ctx->param->sglen; i++) {
1033 struct urb *u = ctx->urb[
1034 (i + subcase->number)
1035 % ctx->param->sglen];
1037 if (u == urb || !u->dev)
1039 spin_unlock(&ctx->lock);
1040 status = usb_unlink_urb(u);
1041 spin_lock(&ctx->lock);
1048 ERROR(ctx->dev, "urb unlink --> %d\n",
1052 status = ctx->status;
1056 /* resubmit if we need to, else mark this as done */
1057 if ((status == 0) && (ctx->pending < ctx->count)) {
1058 status = usb_submit_urb(urb, GFP_ATOMIC);
1061 "can't resubmit ctrl %02x.%02x, err %d\n",
1062 reqp->bRequestType, reqp->bRequest, status);
1069 /* signal completion when nothing's queued */
1070 if (ctx->pending == 0)
1071 complete(&ctx->complete);
1072 spin_unlock(&ctx->lock);
1076 test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param)
1078 struct usb_device *udev = testdev_to_usbdev(dev);
1080 struct ctrl_ctx context;
1083 if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen)
1086 spin_lock_init(&context.lock);
1088 init_completion(&context.complete);
1089 context.count = param->sglen * param->iterations;
1090 context.pending = 0;
1091 context.status = -ENOMEM;
1092 context.param = param;
1095 /* allocate and init the urbs we'll queue.
1096 * as with bulk/intr sglists, sglen is the queue depth; it also
1097 * controls which subtests run (more tests than sglen) or rerun.
1099 urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL);
1102 for (i = 0; i < param->sglen; i++) {
1103 int pipe = usb_rcvctrlpipe(udev, 0);
1106 struct usb_ctrlrequest req;
1107 struct subcase *reqp;
1109 /* sign of this variable means:
1110 * -: tested code must return this (negative) error code
1111 * +: tested code may return this (negative too) error code
1115 /* requests here are mostly expected to succeed on any
1116 * device, but some are chosen to trigger protocol stalls
1119 memset(&req, 0, sizeof(req));
1120 req.bRequest = USB_REQ_GET_DESCRIPTOR;
1121 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1123 switch (i % NUM_SUBCASES) {
1124 case 0: /* get device descriptor */
1125 req.wValue = cpu_to_le16(USB_DT_DEVICE << 8);
1126 len = sizeof(struct usb_device_descriptor);
1128 case 1: /* get first config descriptor (only) */
1129 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1130 len = sizeof(struct usb_config_descriptor);
1132 case 2: /* get altsetting (OFTEN STALLS) */
1133 req.bRequest = USB_REQ_GET_INTERFACE;
1134 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1135 /* index = 0 means first interface */
1139 case 3: /* get interface status */
1140 req.bRequest = USB_REQ_GET_STATUS;
1141 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1145 case 4: /* get device status */
1146 req.bRequest = USB_REQ_GET_STATUS;
1147 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1150 case 5: /* get device qualifier (MAY STALL) */
1151 req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8);
1152 len = sizeof(struct usb_qualifier_descriptor);
1153 if (udev->speed != USB_SPEED_HIGH)
1156 case 6: /* get first config descriptor, plus interface */
1157 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1158 len = sizeof(struct usb_config_descriptor);
1159 len += sizeof(struct usb_interface_descriptor);
1161 case 7: /* get interface descriptor (ALWAYS STALLS) */
1162 req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8);
1163 /* interface == 0 */
1164 len = sizeof(struct usb_interface_descriptor);
1167 /* NOTE: two consecutive stalls in the queue here.
1168 * that tests fault recovery a bit more aggressively. */
1169 case 8: /* clear endpoint halt (MAY STALL) */
1170 req.bRequest = USB_REQ_CLEAR_FEATURE;
1171 req.bRequestType = USB_RECIP_ENDPOINT;
1172 /* wValue 0 == ep halt */
1173 /* wIndex 0 == ep0 (shouldn't halt!) */
1175 pipe = usb_sndctrlpipe(udev, 0);
1178 case 9: /* get endpoint status */
1179 req.bRequest = USB_REQ_GET_STATUS;
1180 req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT;
1184 case 10: /* trigger short read (EREMOTEIO) */
1185 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1187 expected = -EREMOTEIO;
1189 /* NOTE: two consecutive _different_ faults in the queue. */
1190 case 11: /* get endpoint descriptor (ALWAYS STALLS) */
1191 req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8);
1193 len = sizeof(struct usb_interface_descriptor);
1196 /* NOTE: sometimes even a third fault in the queue! */
1197 case 12: /* get string 0 descriptor (MAY STALL) */
1198 req.wValue = cpu_to_le16(USB_DT_STRING << 8);
1199 /* string == 0, for language IDs */
1200 len = sizeof(struct usb_interface_descriptor);
1201 /* may succeed when > 4 languages */
1202 expected = EREMOTEIO; /* or EPIPE, if no strings */
1204 case 13: /* short read, resembling case 10 */
1205 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1206 /* last data packet "should" be DATA1, not DATA0 */
1207 if (udev->speed == USB_SPEED_SUPER)
1210 len = 1024 - udev->descriptor.bMaxPacketSize0;
1211 expected = -EREMOTEIO;
1213 case 14: /* short read; try to fill the last packet */
1214 req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0);
1215 /* device descriptor size == 18 bytes */
1216 len = udev->descriptor.bMaxPacketSize0;
1217 if (udev->speed == USB_SPEED_SUPER)
1227 expected = -EREMOTEIO;
1230 req.wValue = cpu_to_le16(USB_DT_BOS << 8);
1232 len = le16_to_cpu(udev->bos->desc->wTotalLength);
1234 len = sizeof(struct usb_bos_descriptor);
1235 if (le16_to_cpu(udev->descriptor.bcdUSB) < 0x0201)
1239 ERROR(dev, "bogus number of ctrl queue testcases!\n");
1240 context.status = -EINVAL;
1243 req.wLength = cpu_to_le16(len);
1244 urb[i] = u = simple_alloc_urb(udev, pipe, len);
1248 reqp = kmalloc(sizeof(*reqp), GFP_KERNEL);
1252 reqp->number = i % NUM_SUBCASES;
1253 reqp->expected = expected;
1254 u->setup_packet = (char *) &reqp->setup;
1256 u->context = &context;
1257 u->complete = ctrl_complete;
1260 /* queue the urbs */
1262 spin_lock_irq(&context.lock);
1263 for (i = 0; i < param->sglen; i++) {
1264 context.status = usb_submit_urb(urb[i], GFP_ATOMIC);
1265 if (context.status != 0) {
1266 ERROR(dev, "can't submit urb[%d], status %d\n",
1268 context.count = context.pending;
1273 spin_unlock_irq(&context.lock);
1275 /* FIXME set timer and time out; provide a disconnect hook */
1277 /* wait for the last one to complete */
1278 if (context.pending > 0)
1279 wait_for_completion(&context.complete);
1282 for (i = 0; i < param->sglen; i++) {
1286 kfree(urb[i]->setup_packet);
1287 simple_free_urb(urb[i]);
1290 return context.status;
1295 /*-------------------------------------------------------------------------*/
1297 static void unlink1_callback(struct urb *urb)
1299 int status = urb->status;
1301 /* we "know" -EPIPE (stall) never happens */
1303 status = usb_submit_urb(urb, GFP_ATOMIC);
1305 urb->status = status;
1306 complete(urb->context);
1310 static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
1313 struct completion completion;
1316 init_completion(&completion);
1317 urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size);
1320 urb->context = &completion;
1321 urb->complete = unlink1_callback;
1323 /* keep the endpoint busy. there are lots of hc/hcd-internal
1324 * states, and testing should get to all of them over time.
1326 * FIXME want additional tests for when endpoint is STALLing
1327 * due to errors, or is just NAKing requests.
1329 retval = usb_submit_urb(urb, GFP_KERNEL);
1331 dev_err(&dev->intf->dev, "submit fail %d\n", retval);
1335 /* unlinking that should always work. variable delay tests more
1336 * hcd states and code paths, even with little other system load.
1338 msleep(jiffies % (2 * INTERRUPT_RATE));
1340 while (!completion_done(&completion)) {
1341 retval = usb_unlink_urb(urb);
1346 /* we can't unlink urbs while they're completing
1347 * or if they've completed, and we haven't
1348 * resubmitted. "normal" drivers would prevent
1349 * resubmission, but since we're testing unlink
1352 ERROR(dev, "unlink retry\n");
1359 dev_err(&dev->intf->dev,
1360 "unlink fail %d\n", retval);
1369 wait_for_completion(&completion);
1370 retval = urb->status;
1371 simple_free_urb(urb);
1374 return (retval == -ECONNRESET) ? 0 : retval - 1000;
1376 return (retval == -ENOENT || retval == -EPERM) ?
1380 static int unlink_simple(struct usbtest_dev *dev, int pipe, int len)
1384 /* test sync and async paths */
1385 retval = unlink1(dev, pipe, len, 1);
1387 retval = unlink1(dev, pipe, len, 0);
1391 /*-------------------------------------------------------------------------*/
1394 struct completion complete;
1401 static void unlink_queued_callback(struct urb *urb)
1403 int status = urb->status;
1404 struct queued_ctx *ctx = urb->context;
1408 if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) {
1409 if (status == -ECONNRESET)
1411 /* What error should we report if the URB completed normally? */
1414 ctx->status = status;
1417 if (atomic_dec_and_test(&ctx->pending))
1418 complete(&ctx->complete);
1421 static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num,
1424 struct queued_ctx ctx;
1425 struct usb_device *udev = testdev_to_usbdev(dev);
1429 int retval = -ENOMEM;
1431 init_completion(&ctx.complete);
1432 atomic_set(&ctx.pending, 1); /* One more than the actual value */
1436 buf = usb_alloc_coherent(udev, size, GFP_KERNEL, &buf_dma);
1439 memset(buf, 0, size);
1441 /* Allocate and init the urbs we'll queue */
1442 ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL);
1445 for (i = 0; i < num; i++) {
1446 ctx.urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
1449 usb_fill_bulk_urb(ctx.urbs[i], udev, pipe, buf, size,
1450 unlink_queued_callback, &ctx);
1451 ctx.urbs[i]->transfer_dma = buf_dma;
1452 ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1455 /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */
1456 for (i = 0; i < num; i++) {
1457 atomic_inc(&ctx.pending);
1458 retval = usb_submit_urb(ctx.urbs[i], GFP_KERNEL);
1460 dev_err(&dev->intf->dev, "submit urbs[%d] fail %d\n",
1462 atomic_dec(&ctx.pending);
1463 ctx.status = retval;
1468 usb_unlink_urb(ctx.urbs[num - 4]);
1469 usb_unlink_urb(ctx.urbs[num - 2]);
1472 usb_unlink_urb(ctx.urbs[i]);
1475 if (atomic_dec_and_test(&ctx.pending)) /* The extra count */
1476 complete(&ctx.complete);
1477 wait_for_completion(&ctx.complete);
1478 retval = ctx.status;
1481 for (i = 0; i < num; i++)
1482 usb_free_urb(ctx.urbs[i]);
1485 usb_free_coherent(udev, size, buf, buf_dma);
1489 /*-------------------------------------------------------------------------*/
1491 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1496 /* shouldn't look or act halted */
1497 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1499 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n",
1504 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status);
1507 retval = simple_io(tdev, urb, 1, 0, 0, __func__);
1513 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1518 /* should look and act halted */
1519 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1521 ERROR(tdev, "ep %02x couldn't get halt status, %d\n",
1526 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status);
1529 retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__);
1530 if (retval != -EPIPE)
1532 retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted");
1533 if (retval != -EPIPE)
1538 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb)
1542 /* shouldn't look or act halted now */
1543 retval = verify_not_halted(tdev, ep, urb);
1547 /* set halt (protocol test only), verify it worked */
1548 retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0),
1549 USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT,
1550 USB_ENDPOINT_HALT, ep,
1551 NULL, 0, USB_CTRL_SET_TIMEOUT);
1553 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval);
1556 retval = verify_halted(tdev, ep, urb);
1560 /* clear halt anyways, else further tests will fail */
1561 ret = usb_clear_halt(urb->dev, urb->pipe);
1563 ERROR(tdev, "ep %02x couldn't clear halt, %d\n",
1569 /* clear halt (tests API + protocol), verify it worked */
1570 retval = usb_clear_halt(urb->dev, urb->pipe);
1572 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval);
1575 retval = verify_not_halted(tdev, ep, urb);
1579 /* NOTE: could also verify SET_INTERFACE clear halts ... */
1584 static int halt_simple(struct usbtest_dev *dev)
1589 struct usb_device *udev = testdev_to_usbdev(dev);
1591 if (udev->speed == USB_SPEED_SUPER)
1592 urb = simple_alloc_urb(udev, 0, 1024);
1594 urb = simple_alloc_urb(udev, 0, 512);
1599 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN;
1600 urb->pipe = dev->in_pipe;
1601 retval = test_halt(dev, ep, urb);
1606 if (dev->out_pipe) {
1607 ep = usb_pipeendpoint(dev->out_pipe);
1608 urb->pipe = dev->out_pipe;
1609 retval = test_halt(dev, ep, urb);
1612 simple_free_urb(urb);
1616 /*-------------------------------------------------------------------------*/
1618 /* Control OUT tests use the vendor control requests from Intel's
1619 * USB 2.0 compliance test device: write a buffer, read it back.
1621 * Intel's spec only _requires_ that it work for one packet, which
1622 * is pretty weak. Some HCDs place limits here; most devices will
1623 * need to be able to handle more than one OUT data packet. We'll
1624 * try whatever we're told to try.
1626 static int ctrl_out(struct usbtest_dev *dev,
1627 unsigned count, unsigned length, unsigned vary, unsigned offset)
1633 struct usb_device *udev;
1635 if (length < 1 || length > 0xffff || vary >= length)
1638 buf = kmalloc(length + offset, GFP_KERNEL);
1643 udev = testdev_to_usbdev(dev);
1647 /* NOTE: hardware might well act differently if we pushed it
1648 * with lots back-to-back queued requests.
1650 for (i = 0; i < count; i++) {
1651 /* write patterned data */
1652 for (j = 0; j < len; j++)
1654 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1655 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR,
1656 0, 0, buf, len, USB_CTRL_SET_TIMEOUT);
1657 if (retval != len) {
1660 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n",
1667 /* read it back -- assuming nothing intervened!! */
1668 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
1669 0x5c, USB_DIR_IN|USB_TYPE_VENDOR,
1670 0, 0, buf, len, USB_CTRL_GET_TIMEOUT);
1671 if (retval != len) {
1674 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n",
1681 /* fail if we can't verify */
1682 for (j = 0; j < len; j++) {
1683 if (buf[j] != (u8) (i + j)) {
1684 ERROR(dev, "ctrl_out, byte %d is %d not %d\n",
1685 j, buf[j], (u8) i + j);
1697 /* [real world] the "zero bytes IN" case isn't really used.
1698 * hardware can easily trip up in this weird case, since its
1699 * status stage is IN, not OUT like other ep0in transfers.
1702 len = realworld ? 1 : 0;
1706 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n",
1709 kfree(buf - offset);
1713 /*-------------------------------------------------------------------------*/
1715 /* ISO tests ... mimics common usage
1716 * - buffer length is split into N packets (mostly maxpacket sized)
1717 * - multi-buffers according to sglen
1720 struct iso_context {
1724 struct completion done;
1726 unsigned long errors;
1727 unsigned long packet_count;
1728 struct usbtest_dev *dev;
1731 static void iso_callback(struct urb *urb)
1733 struct iso_context *ctx = urb->context;
1735 spin_lock(&ctx->lock);
1738 ctx->packet_count += urb->number_of_packets;
1739 if (urb->error_count > 0)
1740 ctx->errors += urb->error_count;
1741 else if (urb->status != 0)
1742 ctx->errors += urb->number_of_packets;
1743 else if (urb->actual_length != urb->transfer_buffer_length)
1745 else if (check_guard_bytes(ctx->dev, urb) != 0)
1748 if (urb->status == 0 && ctx->count > (ctx->pending - 1)
1749 && !ctx->submit_error) {
1750 int status = usb_submit_urb(urb, GFP_ATOMIC);
1755 dev_err(&ctx->dev->intf->dev,
1756 "iso resubmit err %d\n",
1759 case -ENODEV: /* disconnected */
1760 case -ESHUTDOWN: /* endpoint disabled */
1761 ctx->submit_error = 1;
1767 if (ctx->pending == 0) {
1769 dev_err(&ctx->dev->intf->dev,
1770 "iso test, %lu errors out of %lu\n",
1771 ctx->errors, ctx->packet_count);
1772 complete(&ctx->done);
1775 spin_unlock(&ctx->lock);
1778 static struct urb *iso_alloc_urb(
1779 struct usb_device *udev,
1781 struct usb_endpoint_descriptor *desc,
1787 unsigned i, maxp, packets;
1789 if (bytes < 0 || !desc)
1791 maxp = 0x7ff & usb_endpoint_maxp(desc);
1792 maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11));
1793 packets = DIV_ROUND_UP(bytes, maxp);
1795 urb = usb_alloc_urb(packets, GFP_KERNEL);
1801 urb->number_of_packets = packets;
1802 urb->transfer_buffer_length = bytes;
1803 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
1805 &urb->transfer_dma);
1806 if (!urb->transfer_buffer) {
1811 memset(urb->transfer_buffer, GUARD_BYTE, offset);
1812 urb->transfer_buffer += offset;
1813 urb->transfer_dma += offset;
1815 /* For inbound transfers use guard byte so that test fails if
1816 data not correctly copied */
1817 memset(urb->transfer_buffer,
1818 usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
1821 for (i = 0; i < packets; i++) {
1822 /* here, only the last packet will be short */
1823 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp);
1824 bytes -= urb->iso_frame_desc[i].length;
1826 urb->iso_frame_desc[i].offset = maxp * i;
1829 urb->complete = iso_callback;
1830 /* urb->context = SET BY CALLER */
1831 urb->interval = 1 << (desc->bInterval - 1);
1832 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1837 test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param,
1838 int pipe, struct usb_endpoint_descriptor *desc, unsigned offset)
1840 struct iso_context context;
1841 struct usb_device *udev;
1843 unsigned long packets = 0;
1845 struct urb *urbs[10]; /* FIXME no limit */
1847 if (param->sglen > 10)
1850 memset(&context, 0, sizeof(context));
1851 context.count = param->iterations * param->sglen;
1853 init_completion(&context.done);
1854 spin_lock_init(&context.lock);
1856 memset(urbs, 0, sizeof(urbs));
1857 udev = testdev_to_usbdev(dev);
1858 dev_info(&dev->intf->dev,
1859 "... iso period %d %sframes, wMaxPacket %04x\n",
1860 1 << (desc->bInterval - 1),
1861 (udev->speed == USB_SPEED_HIGH) ? "micro" : "",
1862 usb_endpoint_maxp(desc));
1864 for (i = 0; i < param->sglen; i++) {
1865 urbs[i] = iso_alloc_urb(udev, pipe, desc,
1866 param->length, offset);
1871 packets += urbs[i]->number_of_packets;
1872 urbs[i]->context = &context;
1874 packets *= param->iterations;
1875 dev_info(&dev->intf->dev,
1876 "... total %lu msec (%lu packets)\n",
1877 (packets * (1 << (desc->bInterval - 1)))
1878 / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1),
1881 spin_lock_irq(&context.lock);
1882 for (i = 0; i < param->sglen; i++) {
1884 status = usb_submit_urb(urbs[i], GFP_ATOMIC);
1886 ERROR(dev, "submit iso[%d], error %d\n", i, status);
1888 spin_unlock_irq(&context.lock);
1892 simple_free_urb(urbs[i]);
1895 context.submit_error = 1;
1899 spin_unlock_irq(&context.lock);
1901 wait_for_completion(&context.done);
1903 for (i = 0; i < param->sglen; i++) {
1905 simple_free_urb(urbs[i]);
1908 * Isochronous transfers are expected to fail sometimes. As an
1909 * arbitrary limit, we will report an error if any submissions
1910 * fail or if the transfer failure rate is > 10%.
1914 else if (context.submit_error)
1916 else if (context.errors > context.packet_count / 10)
1921 for (i = 0; i < param->sglen; i++) {
1923 simple_free_urb(urbs[i]);
1928 static int test_unaligned_bulk(
1929 struct usbtest_dev *tdev,
1933 unsigned transfer_flags,
1937 struct urb *urb = usbtest_alloc_urb(
1938 testdev_to_usbdev(tdev), pipe, length, transfer_flags, 1);
1943 retval = simple_io(tdev, urb, iterations, 0, 0, label);
1944 simple_free_urb(urb);
1948 /*-------------------------------------------------------------------------*/
1950 /* We only have this one interface to user space, through usbfs.
1951 * User mode code can scan usbfs to find N different devices (maybe on
1952 * different busses) to use when testing, and allocate one thread per
1953 * test. So discovery is simplified, and we have no device naming issues.
1955 * Don't use these only as stress/load tests. Use them along with with
1956 * other USB bus activity: plugging, unplugging, mousing, mp3 playback,
1957 * video capture, and so on. Run different tests at different times, in
1958 * different sequences. Nothing here should interact with other devices,
1959 * except indirectly by consuming USB bandwidth and CPU resources for test
1960 * threads and request completion. But the only way to know that for sure
1961 * is to test when HC queues are in use by many devices.
1963 * WARNING: Because usbfs grabs udev->dev.sem before calling this ioctl(),
1964 * it locks out usbcore in certain code paths. Notably, if you disconnect
1965 * the device-under-test, khubd will wait block forever waiting for the
1966 * ioctl to complete ... so that usb_disconnect() can abort the pending
1967 * urbs and then call usbtest_disconnect(). To abort a test, you're best
1968 * off just killing the userspace task and waiting for it to exit.
1972 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
1974 struct usbtest_dev *dev = usb_get_intfdata(intf);
1975 struct usb_device *udev = testdev_to_usbdev(dev);
1976 struct usbtest_param *param = buf;
1977 int retval = -EOPNOTSUPP;
1979 struct scatterlist *sg;
1980 struct usb_sg_request req;
1981 struct timeval start;
1984 /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */
1986 pattern = mod_pattern;
1988 if (code != USBTEST_REQUEST)
1991 if (param->iterations <= 0)
1994 if (mutex_lock_interruptible(&dev->lock))
1995 return -ERESTARTSYS;
1997 /* FIXME: What if a system sleep starts while a test is running? */
1999 /* some devices, like ez-usb default devices, need a non-default
2000 * altsetting to have any active endpoints. some tests change
2001 * altsettings; force a default so most tests don't need to check.
2003 if (dev->info->alt >= 0) {
2006 if (intf->altsetting->desc.bInterfaceNumber) {
2007 mutex_unlock(&dev->lock);
2010 res = set_altsetting(dev, dev->info->alt);
2013 "set altsetting to %d failed, %d\n",
2014 dev->info->alt, res);
2015 mutex_unlock(&dev->lock);
2021 * Just a bunch of test cases that every HCD is expected to handle.
2023 * Some may need specific firmware, though it'd be good to have
2024 * one firmware image to handle all the test cases.
2026 * FIXME add more tests! cancel requests, verify the data, control
2027 * queueing, concurrent read+write threads, and so on.
2029 do_gettimeofday(&start);
2030 switch (param->test_num) {
2033 dev_info(&intf->dev, "TEST 0: NOP\n");
2037 /* Simple non-queued bulk I/O tests */
2039 if (dev->out_pipe == 0)
2041 dev_info(&intf->dev,
2042 "TEST 1: write %d bytes %u times\n",
2043 param->length, param->iterations);
2044 urb = simple_alloc_urb(udev, dev->out_pipe, param->length);
2049 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2050 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1");
2051 simple_free_urb(urb);
2054 if (dev->in_pipe == 0)
2056 dev_info(&intf->dev,
2057 "TEST 2: read %d bytes %u times\n",
2058 param->length, param->iterations);
2059 urb = simple_alloc_urb(udev, dev->in_pipe, param->length);
2064 /* FIRMWARE: bulk source (maybe generates short writes) */
2065 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2");
2066 simple_free_urb(urb);
2069 if (dev->out_pipe == 0 || param->vary == 0)
2071 dev_info(&intf->dev,
2072 "TEST 3: write/%d 0..%d bytes %u times\n",
2073 param->vary, param->length, param->iterations);
2074 urb = simple_alloc_urb(udev, dev->out_pipe, param->length);
2079 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2080 retval = simple_io(dev, urb, param->iterations, param->vary,
2082 simple_free_urb(urb);
2085 if (dev->in_pipe == 0 || param->vary == 0)
2087 dev_info(&intf->dev,
2088 "TEST 4: read/%d 0..%d bytes %u times\n",
2089 param->vary, param->length, param->iterations);
2090 urb = simple_alloc_urb(udev, dev->in_pipe, param->length);
2095 /* FIRMWARE: bulk source (maybe generates short writes) */
2096 retval = simple_io(dev, urb, param->iterations, param->vary,
2098 simple_free_urb(urb);
2101 /* Queued bulk I/O tests */
2103 if (dev->out_pipe == 0 || param->sglen == 0)
2105 dev_info(&intf->dev,
2106 "TEST 5: write %d sglists %d entries of %d bytes\n",
2108 param->sglen, param->length);
2109 sg = alloc_sglist(param->sglen, param->length, 0);
2114 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2115 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2116 &req, sg, param->sglen);
2117 free_sglist(sg, param->sglen);
2121 if (dev->in_pipe == 0 || param->sglen == 0)
2123 dev_info(&intf->dev,
2124 "TEST 6: read %d sglists %d entries of %d bytes\n",
2126 param->sglen, param->length);
2127 sg = alloc_sglist(param->sglen, param->length, 0);
2132 /* FIRMWARE: bulk source (maybe generates short writes) */
2133 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2134 &req, sg, param->sglen);
2135 free_sglist(sg, param->sglen);
2138 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0)
2140 dev_info(&intf->dev,
2141 "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n",
2142 param->vary, param->iterations,
2143 param->sglen, param->length);
2144 sg = alloc_sglist(param->sglen, param->length, param->vary);
2149 /* FIRMWARE: bulk sink (maybe accepts short writes) */
2150 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2151 &req, sg, param->sglen);
2152 free_sglist(sg, param->sglen);
2155 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0)
2157 dev_info(&intf->dev,
2158 "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n",
2159 param->vary, param->iterations,
2160 param->sglen, param->length);
2161 sg = alloc_sglist(param->sglen, param->length, param->vary);
2166 /* FIRMWARE: bulk source (maybe generates short writes) */
2167 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2168 &req, sg, param->sglen);
2169 free_sglist(sg, param->sglen);
2172 /* non-queued sanity tests for control (chapter 9 subset) */
2175 dev_info(&intf->dev,
2176 "TEST 9: ch9 (subset) control tests, %d times\n",
2178 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2179 retval = ch9_postconfig(dev);
2181 dev_err(&intf->dev, "ch9 subset failed, "
2182 "iterations left %d\n", i);
2185 /* queued control messaging */
2188 dev_info(&intf->dev,
2189 "TEST 10: queue %d control calls, %d times\n",
2192 retval = test_ctrl_queue(dev, param);
2195 /* simple non-queued unlinks (ring with one urb) */
2197 if (dev->in_pipe == 0 || !param->length)
2200 dev_info(&intf->dev, "TEST 11: unlink %d reads of %d\n",
2201 param->iterations, param->length);
2202 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2203 retval = unlink_simple(dev, dev->in_pipe,
2206 dev_err(&intf->dev, "unlink reads failed %d, "
2207 "iterations left %d\n", retval, i);
2210 if (dev->out_pipe == 0 || !param->length)
2213 dev_info(&intf->dev, "TEST 12: unlink %d writes of %d\n",
2214 param->iterations, param->length);
2215 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2216 retval = unlink_simple(dev, dev->out_pipe,
2219 dev_err(&intf->dev, "unlink writes failed %d, "
2220 "iterations left %d\n", retval, i);
2225 if (dev->out_pipe == 0 && dev->in_pipe == 0)
2228 dev_info(&intf->dev, "TEST 13: set/clear %d halts\n",
2230 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2231 retval = halt_simple(dev);
2234 ERROR(dev, "halts failed, iterations left %d\n", i);
2237 /* control write tests */
2239 if (!dev->info->ctrl_out)
2241 dev_info(&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n",
2243 realworld ? 1 : 0, param->length,
2245 retval = ctrl_out(dev, param->iterations,
2246 param->length, param->vary, 0);
2249 /* iso write tests */
2251 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2253 dev_info(&intf->dev,
2254 "TEST 15: write %d iso, %d entries of %d bytes\n",
2256 param->sglen, param->length);
2257 /* FIRMWARE: iso sink */
2258 retval = test_iso_queue(dev, param,
2259 dev->out_iso_pipe, dev->iso_out, 0);
2262 /* iso read tests */
2264 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2266 dev_info(&intf->dev,
2267 "TEST 16: read %d iso, %d entries of %d bytes\n",
2269 param->sglen, param->length);
2270 /* FIRMWARE: iso source */
2271 retval = test_iso_queue(dev, param,
2272 dev->in_iso_pipe, dev->iso_in, 0);
2275 /* FIXME scatterlist cancel (needs helper thread) */
2277 /* Tests for bulk I/O using DMA mapping by core and odd address */
2279 if (dev->out_pipe == 0)
2281 dev_info(&intf->dev,
2282 "TEST 17: write odd addr %d bytes %u times core map\n",
2283 param->length, param->iterations);
2285 retval = test_unaligned_bulk(
2287 param->length, param->iterations,
2292 if (dev->in_pipe == 0)
2294 dev_info(&intf->dev,
2295 "TEST 18: read odd addr %d bytes %u times core map\n",
2296 param->length, param->iterations);
2298 retval = test_unaligned_bulk(
2300 param->length, param->iterations,
2304 /* Tests for bulk I/O using premapped coherent buffer and odd address */
2306 if (dev->out_pipe == 0)
2308 dev_info(&intf->dev,
2309 "TEST 19: write odd addr %d bytes %u times premapped\n",
2310 param->length, param->iterations);
2312 retval = test_unaligned_bulk(
2314 param->length, param->iterations,
2315 URB_NO_TRANSFER_DMA_MAP, "test19");
2319 if (dev->in_pipe == 0)
2321 dev_info(&intf->dev,
2322 "TEST 20: read odd addr %d bytes %u times premapped\n",
2323 param->length, param->iterations);
2325 retval = test_unaligned_bulk(
2327 param->length, param->iterations,
2328 URB_NO_TRANSFER_DMA_MAP, "test20");
2331 /* control write tests with unaligned buffer */
2333 if (!dev->info->ctrl_out)
2335 dev_info(&intf->dev,
2336 "TEST 21: %d ep0out odd addr, %d..%d vary %d\n",
2338 realworld ? 1 : 0, param->length,
2340 retval = ctrl_out(dev, param->iterations,
2341 param->length, param->vary, 1);
2344 /* unaligned iso tests */
2346 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2348 dev_info(&intf->dev,
2349 "TEST 22: write %d iso odd, %d entries of %d bytes\n",
2351 param->sglen, param->length);
2352 retval = test_iso_queue(dev, param,
2353 dev->out_iso_pipe, dev->iso_out, 1);
2357 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2359 dev_info(&intf->dev,
2360 "TEST 23: read %d iso odd, %d entries of %d bytes\n",
2362 param->sglen, param->length);
2363 retval = test_iso_queue(dev, param,
2364 dev->in_iso_pipe, dev->iso_in, 1);
2367 /* unlink URBs from a bulk-OUT queue */
2369 if (dev->out_pipe == 0 || !param->length || param->sglen < 4)
2372 dev_info(&intf->dev, "TEST 24: unlink from %d queues of "
2373 "%d %d-byte writes\n",
2374 param->iterations, param->sglen, param->length);
2375 for (i = param->iterations; retval == 0 && i > 0; --i) {
2376 retval = unlink_queued(dev, dev->out_pipe,
2377 param->sglen, param->length);
2380 "unlink queued writes failed %d, "
2381 "iterations left %d\n", retval, i);
2388 do_gettimeofday(¶m->duration);
2389 param->duration.tv_sec -= start.tv_sec;
2390 param->duration.tv_usec -= start.tv_usec;
2391 if (param->duration.tv_usec < 0) {
2392 param->duration.tv_usec += 1000 * 1000;
2393 param->duration.tv_sec -= 1;
2395 mutex_unlock(&dev->lock);
2399 /*-------------------------------------------------------------------------*/
2401 static unsigned force_interrupt;
2402 module_param(force_interrupt, uint, 0);
2403 MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt");
2406 static unsigned short vendor;
2407 module_param(vendor, ushort, 0);
2408 MODULE_PARM_DESC(vendor, "vendor code (from usb-if)");
2410 static unsigned short product;
2411 module_param(product, ushort, 0);
2412 MODULE_PARM_DESC(product, "product code (from vendor)");
2416 usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
2418 struct usb_device *udev;
2419 struct usbtest_dev *dev;
2420 struct usbtest_info *info;
2421 char *rtest, *wtest;
2422 char *irtest, *iwtest;
2424 udev = interface_to_usbdev(intf);
2427 /* specify devices by module parameters? */
2428 if (id->match_flags == 0) {
2429 /* vendor match required, product match optional */
2430 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor)
2432 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product)
2434 dev_info(&intf->dev, "matched module params, "
2435 "vend=0x%04x prod=0x%04x\n",
2436 le16_to_cpu(udev->descriptor.idVendor),
2437 le16_to_cpu(udev->descriptor.idProduct));
2441 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2444 info = (struct usbtest_info *) id->driver_info;
2446 mutex_init(&dev->lock);
2450 /* cacheline-aligned scratch for i/o */
2451 dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL);
2452 if (dev->buf == NULL) {
2457 /* NOTE this doesn't yet test the handful of difference that are
2458 * visible with high speed interrupts: bigger maxpacket (1K) and
2459 * "high bandwidth" modes (up to 3 packets/uframe).
2462 irtest = iwtest = "";
2463 if (force_interrupt || udev->speed == USB_SPEED_LOW) {
2465 dev->in_pipe = usb_rcvintpipe(udev, info->ep_in);
2469 dev->out_pipe = usb_sndintpipe(udev, info->ep_out);
2470 wtest = " intr-out";
2473 if (override_alt >= 0 || info->autoconf) {
2476 status = get_endpoints(dev, intf);
2478 WARNING(dev, "couldn't get endpoints, %d\n",
2484 /* may find bulk or ISO pipes */
2487 dev->in_pipe = usb_rcvbulkpipe(udev,
2490 dev->out_pipe = usb_sndbulkpipe(udev,
2496 wtest = " bulk-out";
2497 if (dev->in_iso_pipe)
2499 if (dev->out_iso_pipe)
2500 iwtest = " iso-out";
2503 usb_set_intfdata(intf, dev);
2504 dev_info(&intf->dev, "%s\n", info->name);
2505 dev_info(&intf->dev, "%s {control%s%s%s%s%s} tests%s\n",
2506 usb_speed_string(udev->speed),
2507 info->ctrl_out ? " in/out" : "",
2510 info->alt >= 0 ? " (+alt)" : "");
2514 static int usbtest_suspend(struct usb_interface *intf, pm_message_t message)
2519 static int usbtest_resume(struct usb_interface *intf)
2525 static void usbtest_disconnect(struct usb_interface *intf)
2527 struct usbtest_dev *dev = usb_get_intfdata(intf);
2529 usb_set_intfdata(intf, NULL);
2530 dev_dbg(&intf->dev, "disconnect\n");
2534 /* Basic testing only needs a device that can source or sink bulk traffic.
2535 * Any device can test control transfers (default with GENERIC binding).
2537 * Several entries work with the default EP0 implementation that's built
2538 * into EZ-USB chips. There's a default vendor ID which can be overridden
2539 * by (very) small config EEPROMS, but otherwise all these devices act
2540 * identically until firmware is loaded: only EP0 works. It turns out
2541 * to be easy to make other endpoints work, without modifying that EP0
2542 * behavior. For now, we expect that kind of firmware.
2545 /* an21xx or fx versions of ez-usb */
2546 static struct usbtest_info ez1_info = {
2547 .name = "EZ-USB device",
2553 /* fx2 version of ez-usb */
2554 static struct usbtest_info ez2_info = {
2555 .name = "FX2 device",
2561 /* ezusb family device with dedicated usb test firmware,
2563 static struct usbtest_info fw_info = {
2564 .name = "usb test device",
2568 .autoconf = 1, /* iso and ctrl_out need autoconf */
2570 .iso = 1, /* iso_ep's are #8 in/out */
2573 /* peripheral running Linux and 'zero.c' test firmware, or
2574 * its user-mode cousin. different versions of this use
2575 * different hardware with the same vendor/product codes.
2576 * host side MUST rely on the endpoint descriptors.
2578 static struct usbtest_info gz_info = {
2579 .name = "Linux gadget zero",
2586 static struct usbtest_info um_info = {
2587 .name = "Linux user mode test driver",
2592 static struct usbtest_info um2_info = {
2593 .name = "Linux user mode ISO test driver",
2600 /* this is a nice source of high speed bulk data;
2601 * uses an FX2, with firmware provided in the device
2603 static struct usbtest_info ibot2_info = {
2604 .name = "iBOT2 webcam",
2611 /* we can use any device to test control traffic */
2612 static struct usbtest_info generic_info = {
2613 .name = "Generic USB device",
2619 static const struct usb_device_id id_table[] = {
2621 /*-------------------------------------------------------------*/
2623 /* EZ-USB devices which download firmware to replace (or in our
2624 * case augment) the default device implementation.
2627 /* generic EZ-USB FX controller */
2628 { USB_DEVICE(0x0547, 0x2235),
2629 .driver_info = (unsigned long) &ez1_info,
2632 /* CY3671 development board with EZ-USB FX */
2633 { USB_DEVICE(0x0547, 0x0080),
2634 .driver_info = (unsigned long) &ez1_info,
2637 /* generic EZ-USB FX2 controller (or development board) */
2638 { USB_DEVICE(0x04b4, 0x8613),
2639 .driver_info = (unsigned long) &ez2_info,
2642 /* re-enumerated usb test device firmware */
2643 { USB_DEVICE(0xfff0, 0xfff0),
2644 .driver_info = (unsigned long) &fw_info,
2647 /* "Gadget Zero" firmware runs under Linux */
2648 { USB_DEVICE(0x0525, 0xa4a0),
2649 .driver_info = (unsigned long) &gz_info,
2652 /* so does a user-mode variant */
2653 { USB_DEVICE(0x0525, 0xa4a4),
2654 .driver_info = (unsigned long) &um_info,
2657 /* ... and a user-mode variant that talks iso */
2658 { USB_DEVICE(0x0525, 0xa4a3),
2659 .driver_info = (unsigned long) &um2_info,
2663 /* Keyspan 19qi uses an21xx (original EZ-USB) */
2664 /* this does not coexist with the real Keyspan 19qi driver! */
2665 { USB_DEVICE(0x06cd, 0x010b),
2666 .driver_info = (unsigned long) &ez1_info,
2670 /*-------------------------------------------------------------*/
2673 /* iBOT2 makes a nice source of high speed bulk-in data */
2674 /* this does not coexist with a real iBOT2 driver! */
2675 { USB_DEVICE(0x0b62, 0x0059),
2676 .driver_info = (unsigned long) &ibot2_info,
2680 /*-------------------------------------------------------------*/
2683 /* module params can specify devices to use for control tests */
2684 { .driver_info = (unsigned long) &generic_info, },
2687 /*-------------------------------------------------------------*/
2691 MODULE_DEVICE_TABLE(usb, id_table);
2693 static struct usb_driver usbtest_driver = {
2695 .id_table = id_table,
2696 .probe = usbtest_probe,
2697 .unlocked_ioctl = usbtest_ioctl,
2698 .disconnect = usbtest_disconnect,
2699 .suspend = usbtest_suspend,
2700 .resume = usbtest_resume,
2703 /*-------------------------------------------------------------------------*/
2705 static int __init usbtest_init(void)
2709 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product);
2711 return usb_register(&usbtest_driver);
2713 module_init(usbtest_init);
2715 static void __exit usbtest_exit(void)
2717 usb_deregister(&usbtest_driver);
2719 module_exit(usbtest_exit);
2721 MODULE_DESCRIPTION("USB Core/HCD Testing Driver");
2722 MODULE_LICENSE("GPL");