1 #include <linux/config.h>
2 #if !defined (DEBUG) && defined (CONFIG_USB_DEBUG)
5 #include <linux/kernel.h>
6 #include <linux/errno.h>
7 #include <linux/init.h>
8 #include <linux/slab.h>
10 #include <linux/module.h>
11 #include <linux/moduleparam.h>
12 #include <asm/scatterlist.h>
14 #include <linux/usb.h>
17 /*-------------------------------------------------------------------------*/
19 // FIXME make these public somewhere; usbdevfs.h?
21 struct usbtest_param {
23 unsigned test_num; /* 0..(TEST_CASES-1) */
30 struct timeval duration;
32 #define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param)
34 /*-------------------------------------------------------------------------*/
36 #define GENERIC /* let probe() bind using module params */
38 /* Some devices that can be used for testing will have "real" drivers.
39 * Entries for those need to be enabled here by hand, after disabling
42 //#define IBOT2 /* grab iBOT2 webcams */
43 //#define KEYSPAN_19Qi /* grab un-renumerated serial adapter */
45 /*-------------------------------------------------------------------------*/
49 u8 ep_in; /* bulk/intr source */
50 u8 ep_out; /* bulk/intr sink */
51 unsigned autoconf : 1;
52 unsigned ctrl_out : 1;
53 unsigned iso : 1; /* try iso in/out */
57 /* this is accessed only through usbfs ioctl calls.
58 * one ioctl to issue a test ... one lock per device.
59 * tests create other threads if they need them.
60 * urbs and buffers are allocated dynamically,
61 * and data generated deterministically.
64 struct usb_interface *intf;
65 struct usbtest_info *info;
70 struct usb_endpoint_descriptor *iso_in, *iso_out;
77 static struct usb_device *testdev_to_usbdev (struct usbtest_dev *test)
79 return interface_to_usbdev (test->intf);
82 /* set up all urbs so they can be used with either bulk or interrupt */
83 #define INTERRUPT_RATE 1 /* msec/transfer */
85 #define xprintk(tdev,level,fmt,args...) \
86 dev_printk(level , &(tdev)->intf->dev , fmt , ## args)
89 #define DBG(dev,fmt,args...) \
90 xprintk(dev , KERN_DEBUG , fmt , ## args)
92 #define DBG(dev,fmt,args...) \
99 #define VDBG(dev,fmt,args...) \
103 #define ERROR(dev,fmt,args...) \
104 xprintk(dev , KERN_ERR , fmt , ## args)
105 #define WARN(dev,fmt,args...) \
106 xprintk(dev , KERN_WARNING , fmt , ## args)
107 #define INFO(dev,fmt,args...) \
108 xprintk(dev , KERN_INFO , fmt , ## args)
110 /*-------------------------------------------------------------------------*/
113 get_endpoints (struct usbtest_dev *dev, struct usb_interface *intf)
116 struct usb_host_interface *alt;
117 struct usb_host_endpoint *in, *out;
118 struct usb_host_endpoint *iso_in, *iso_out;
119 struct usb_device *udev;
121 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
125 iso_in = iso_out = NULL;
126 alt = intf->altsetting + tmp;
128 /* take the first altsetting with in-bulk + out-bulk;
129 * ignore other endpoints and altsetttings.
131 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
132 struct usb_host_endpoint *e;
134 e = alt->endpoint + ep;
135 switch (e->desc.bmAttributes) {
136 case USB_ENDPOINT_XFER_BULK:
138 case USB_ENDPOINT_XFER_ISOC:
145 if (e->desc.bEndpointAddress & USB_DIR_IN) {
154 if (e->desc.bEndpointAddress & USB_DIR_IN) {
162 if ((in && out) || (iso_in && iso_out))
168 udev = testdev_to_usbdev (dev);
169 if (alt->desc.bAlternateSetting != 0) {
170 tmp = usb_set_interface (udev,
171 alt->desc.bInterfaceNumber,
172 alt->desc.bAlternateSetting);
178 dev->in_pipe = usb_rcvbulkpipe (udev,
179 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
180 dev->out_pipe = usb_sndbulkpipe (udev,
181 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
184 dev->iso_in = &iso_in->desc;
185 dev->in_iso_pipe = usb_rcvisocpipe (udev,
186 iso_in->desc.bEndpointAddress
187 & USB_ENDPOINT_NUMBER_MASK);
188 dev->iso_out = &iso_out->desc;
189 dev->out_iso_pipe = usb_sndisocpipe (udev,
190 iso_out->desc.bEndpointAddress
191 & USB_ENDPOINT_NUMBER_MASK);
196 /*-------------------------------------------------------------------------*/
198 /* Support for testing basic non-queued I/O streams.
200 * These just package urbs as requests that can be easily canceled.
201 * Each urb's data buffer is dynamically allocated; callers can fill
202 * them with non-zero test data (or test for it) when appropriate.
205 static void simple_callback (struct urb *urb, struct pt_regs *regs)
207 complete ((struct completion *) urb->context);
210 static struct urb *simple_alloc_urb (
211 struct usb_device *udev,
220 urb = usb_alloc_urb (0, SLAB_KERNEL);
223 usb_fill_bulk_urb (urb, udev, pipe, NULL, bytes, simple_callback, NULL);
224 urb->interval = (udev->speed == USB_SPEED_HIGH)
225 ? (INTERRUPT_RATE << 3)
227 urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
228 if (usb_pipein (pipe))
229 urb->transfer_flags |= URB_SHORT_NOT_OK;
230 urb->transfer_buffer = usb_buffer_alloc (udev, bytes, SLAB_KERNEL,
232 if (!urb->transfer_buffer) {
236 memset (urb->transfer_buffer, 0, bytes);
240 static unsigned pattern = 0;
241 module_param (pattern, uint, S_IRUGO);
242 // MODULE_PARM_DESC (pattern, "i/o pattern (0 == zeroes)");
244 static inline void simple_fill_buf (struct urb *urb)
247 u8 *buf = urb->transfer_buffer;
248 unsigned len = urb->transfer_buffer_length;
254 memset (buf, 0, len);
257 for (i = 0; i < len; i++)
258 *buf++ = (u8) (i % 63);
263 static inline int simple_check_buf (struct urb *urb)
267 u8 *buf = urb->transfer_buffer;
268 unsigned len = urb->actual_length;
270 for (i = 0; i < len; i++, buf++) {
272 /* all-zeroes has no synchronization issues */
276 /* mod63 stays in sync with short-terminated transfers,
277 * or otherwise when host and gadget agree on how large
278 * each usb transfer request should be. resync is done
279 * with set_interface or set_config.
284 /* always fail unsupported patterns */
289 if (*buf == expected)
291 dbg ("buf[%d] = %d (not %d)", i, *buf, expected);
297 static void simple_free_urb (struct urb *urb)
299 usb_buffer_free (urb->dev, urb->transfer_buffer_length,
300 urb->transfer_buffer, urb->transfer_dma);
304 static int simple_io (
312 struct usb_device *udev = urb->dev;
313 int max = urb->transfer_buffer_length;
314 struct completion completion;
317 urb->context = &completion;
318 while (retval == 0 && iterations-- > 0) {
319 init_completion (&completion);
320 if (usb_pipeout (urb->pipe))
321 simple_fill_buf (urb);
322 if ((retval = usb_submit_urb (urb, SLAB_KERNEL)) != 0)
325 /* NOTE: no timeouts; can't be broken out of by interrupt */
326 wait_for_completion (&completion);
327 retval = urb->status;
329 if (retval == 0 && usb_pipein (urb->pipe))
330 retval = simple_check_buf (urb);
333 int len = urb->transfer_buffer_length;
338 len = (vary < max) ? vary : max;
339 urb->transfer_buffer_length = len;
342 /* FIXME if endpoint halted, clear halt (and log) */
344 urb->transfer_buffer_length = max;
346 if (expected != retval)
348 "%s failed, iterations left %d, status %d (not %d)\n",
349 label, iterations, retval, expected);
354 /*-------------------------------------------------------------------------*/
356 /* We use scatterlist primitives to test queued I/O.
357 * Yes, this also tests the scatterlist primitives.
360 static void free_sglist (struct scatterlist *sg, int nents)
366 for (i = 0; i < nents; i++) {
369 kfree (page_address (sg [i].page) + sg [i].offset);
374 static struct scatterlist *
375 alloc_sglist (int nents, int max, int vary)
377 struct scatterlist *sg;
381 sg = kmalloc (nents * sizeof *sg, SLAB_KERNEL);
384 memset (sg, 0, nents * sizeof *sg);
386 for (i = 0; i < nents; i++) {
389 buf = kmalloc (size, SLAB_KERNEL);
394 memset (buf, 0, size);
396 /* kmalloc pages are always physically contiguous! */
397 sg [i].page = virt_to_page (buf);
398 sg [i].offset = offset_in_page (buf);
399 sg [i].length = size;
405 size = (vary < max) ? vary : max;
412 static int perform_sglist (
413 struct usb_device *udev,
416 struct usb_sg_request *req,
417 struct scatterlist *sg,
423 while (retval == 0 && iterations-- > 0) {
424 retval = usb_sg_init (req, udev, pipe,
425 (udev->speed == USB_SPEED_HIGH)
426 ? (INTERRUPT_RATE << 3)
428 sg, nents, 0, SLAB_KERNEL);
433 retval = req->status;
435 /* FIXME if endpoint halted, clear halt (and log) */
438 // FIXME for unlink or fault handling tests, don't report
439 // failure if retval is as we expected ...
442 dbg ("perform_sglist failed, iterations left %d, status %d",
448 /*-------------------------------------------------------------------------*/
450 /* unqueued control message testing
452 * there's a nice set of device functional requirements in chapter 9 of the
453 * usb 2.0 spec, which we can apply to ANY device, even ones that don't use
454 * special test firmware.
456 * we know the device is configured (or suspended) by the time it's visible
457 * through usbfs. we can't change that, so we won't test enumeration (which
458 * worked 'well enough' to get here, this time), power management (ditto),
459 * or remote wakeup (which needs human interaction).
462 static unsigned realworld = 1;
463 module_param (realworld, uint, 0);
464 MODULE_PARM_DESC (realworld, "clear to demand stricter spec compliance");
466 static int get_altsetting (struct usbtest_dev *dev)
468 struct usb_interface *iface = dev->intf;
469 struct usb_device *udev = interface_to_usbdev (iface);
472 retval = usb_control_msg (udev, usb_rcvctrlpipe (udev, 0),
473 USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE,
474 0, iface->altsetting [0].desc.bInterfaceNumber,
475 dev->buf, 1, USB_CTRL_GET_TIMEOUT);
487 static int set_altsetting (struct usbtest_dev *dev, int alternate)
489 struct usb_interface *iface = dev->intf;
490 struct usb_device *udev;
492 if (alternate < 0 || alternate >= 256)
495 udev = interface_to_usbdev (iface);
496 return usb_set_interface (udev,
497 iface->altsetting [0].desc.bInterfaceNumber,
501 static int is_good_config (char *buf, int len)
503 struct usb_config_descriptor *config;
505 if (len < sizeof *config)
507 config = (struct usb_config_descriptor *) buf;
509 switch (config->bDescriptorType) {
511 case USB_DT_OTHER_SPEED_CONFIG:
512 if (config->bLength != 9) {
513 dbg ("bogus config descriptor length");
516 /* this bit 'must be 1' but often isn't */
517 if (!realworld && !(config->bmAttributes & 0x80)) {
518 dbg ("high bit of config attributes not set");
521 if (config->bmAttributes & 0x1f) { /* reserved == 0 */
522 dbg ("reserved config bits set");
530 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */
532 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */
534 dbg ("bogus config descriptor read size");
538 /* sanity test for standard requests working with usb_control_mesg() and some
539 * of the utility functions which use it.
541 * this doesn't test how endpoint halts behave or data toggles get set, since
542 * we won't do I/O to bulk/interrupt endpoints here (which is how to change
543 * halt or toggle). toggle testing is impractical without support from hcds.
545 * this avoids failing devices linux would normally work with, by not testing
546 * config/altsetting operations for devices that only support their defaults.
547 * such devices rarely support those needless operations.
549 * NOTE that since this is a sanity test, it's not examining boundary cases
550 * to see if usbcore, hcd, and device all behave right. such testing would
551 * involve varied read sizes and other operation sequences.
553 static int ch9_postconfig (struct usbtest_dev *dev)
555 struct usb_interface *iface = dev->intf;
556 struct usb_device *udev = interface_to_usbdev (iface);
559 /* [9.2.3] if there's more than one altsetting, we need to be able to
560 * set and get each one. mostly trusts the descriptors from usbcore.
562 for (i = 0; i < iface->num_altsetting; i++) {
564 /* 9.2.3 constrains the range here */
565 alt = iface->altsetting [i].desc.bAlternateSetting;
566 if (alt < 0 || alt >= iface->num_altsetting) {
567 dev_dbg (&iface->dev,
568 "invalid alt [%d].bAltSetting = %d\n",
572 /* [real world] get/set unimplemented if there's only one */
573 if (realworld && iface->num_altsetting == 1)
576 /* [9.4.10] set_interface */
577 retval = set_altsetting (dev, alt);
579 dev_dbg (&iface->dev, "can't set_interface = %d, %d\n",
584 /* [9.4.4] get_interface always works */
585 retval = get_altsetting (dev);
587 dev_dbg (&iface->dev, "get alt should be %d, was %d\n",
589 return (retval < 0) ? retval : -EDOM;
594 /* [real world] get_config unimplemented if there's only one */
595 if (!realworld || udev->descriptor.bNumConfigurations != 1) {
596 int expected = udev->actconfig->desc.bConfigurationValue;
598 /* [9.4.2] get_configuration always works
599 * ... although some cheap devices (like one TI Hub I've got)
600 * won't return config descriptors except before set_config.
602 retval = usb_control_msg (udev, usb_rcvctrlpipe (udev, 0),
603 USB_REQ_GET_CONFIGURATION,
604 USB_DIR_IN | USB_RECIP_DEVICE,
605 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);
606 if (retval != 1 || dev->buf [0] != expected) {
607 dev_dbg (&iface->dev, "get config --> %d %d (1 %d)\n",
608 retval, dev->buf[0], expected);
609 return (retval < 0) ? retval : -EDOM;
613 /* there's always [9.4.3] a device descriptor [9.6.1] */
614 retval = usb_get_descriptor (udev, USB_DT_DEVICE, 0,
615 dev->buf, sizeof udev->descriptor);
616 if (retval != sizeof udev->descriptor) {
617 dev_dbg (&iface->dev, "dev descriptor --> %d\n", retval);
618 return (retval < 0) ? retval : -EDOM;
621 /* there's always [9.4.3] at least one config descriptor [9.6.3] */
622 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
623 retval = usb_get_descriptor (udev, USB_DT_CONFIG, i,
624 dev->buf, TBUF_SIZE);
625 if (!is_good_config (dev->buf, retval)) {
626 dev_dbg (&iface->dev,
627 "config [%d] descriptor --> %d\n",
629 return (retval < 0) ? retval : -EDOM;
632 // FIXME cross-checking udev->config[i] to make sure usbcore
633 // parsed it right (etc) would be good testing paranoia
636 /* and sometimes [9.2.6.6] speed dependent descriptors */
637 if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) {
638 struct usb_qualifier_descriptor *d = NULL;
640 /* device qualifier [9.6.2] */
641 retval = usb_get_descriptor (udev,
642 USB_DT_DEVICE_QUALIFIER, 0, dev->buf,
643 sizeof (struct usb_qualifier_descriptor));
644 if (retval == -EPIPE) {
645 if (udev->speed == USB_SPEED_HIGH) {
646 dev_dbg (&iface->dev,
647 "hs dev qualifier --> %d\n",
649 return (retval < 0) ? retval : -EDOM;
651 /* usb2.0 but not high-speed capable; fine */
652 } else if (retval != sizeof (struct usb_qualifier_descriptor)) {
653 dev_dbg (&iface->dev, "dev qualifier --> %d\n", retval);
654 return (retval < 0) ? retval : -EDOM;
656 d = (struct usb_qualifier_descriptor *) dev->buf;
658 /* might not have [9.6.2] any other-speed configs [9.6.4] */
660 unsigned max = d->bNumConfigurations;
661 for (i = 0; i < max; i++) {
662 retval = usb_get_descriptor (udev,
663 USB_DT_OTHER_SPEED_CONFIG, i,
664 dev->buf, TBUF_SIZE);
665 if (!is_good_config (dev->buf, retval)) {
666 dev_dbg (&iface->dev,
667 "other speed config --> %d\n",
669 return (retval < 0) ? retval : -EDOM;
674 // FIXME fetch strings from at least the device descriptor
676 /* [9.4.5] get_status always works */
677 retval = usb_get_status (udev, USB_RECIP_DEVICE, 0, dev->buf);
679 dev_dbg (&iface->dev, "get dev status --> %d\n", retval);
680 return (retval < 0) ? retval : -EDOM;
683 // FIXME configuration.bmAttributes says if we could try to set/clear
684 // the device's remote wakeup feature ... if we can, test that here
686 retval = usb_get_status (udev, USB_RECIP_INTERFACE,
687 iface->altsetting [0].desc.bInterfaceNumber, dev->buf);
689 dev_dbg (&iface->dev, "get interface status --> %d\n", retval);
690 return (retval < 0) ? retval : -EDOM;
692 // FIXME get status for each endpoint in the interface
697 /*-------------------------------------------------------------------------*/
699 /* use ch9 requests to test whether:
700 * (a) queues work for control, keeping N subtests queued and
701 * active (auto-resubmit) for M loops through the queue.
702 * (b) protocol stalls (control-only) will autorecover.
703 * it's not like bulk/intr; no halt clearing.
704 * (c) short control reads are reported and handled.
705 * (d) queues are always processed in-order
710 struct usbtest_dev *dev;
711 struct completion complete;
716 struct usbtest_param *param;
720 #define NUM_SUBCASES 15 /* how many test subcases here? */
723 struct usb_ctrlrequest setup;
728 static void ctrl_complete (struct urb *urb, struct pt_regs *regs)
730 struct ctrl_ctx *ctx = urb->context;
731 struct usb_ctrlrequest *reqp;
732 struct subcase *subcase;
733 int status = urb->status;
735 reqp = (struct usb_ctrlrequest *)urb->setup_packet;
736 subcase = container_of (reqp, struct subcase, setup);
738 spin_lock (&ctx->lock);
742 /* queue must transfer and complete in fifo order, unless
743 * usb_unlink_urb() is used to unlink something not at the
744 * physical queue head (not tested).
746 if (subcase->number > 0) {
747 if ((subcase->number - ctx->last) != 1) {
748 dbg ("subcase %d completed out of order, last %d",
749 subcase->number, ctx->last);
751 ctx->last = subcase->number;
755 ctx->last = subcase->number;
757 /* succeed or fault in only one way? */
758 if (status == subcase->expected)
761 /* async unlink for cleanup? */
762 else if (status != -ECONNRESET) {
764 /* some faults are allowed, not required */
765 if (subcase->expected > 0 && (
766 ((urb->status == -subcase->expected /* happened */
767 || urb->status == 0)))) /* didn't */
769 /* sometimes more than one fault is allowed */
770 else if (subcase->number == 12 && status == -EPIPE)
773 dbg ("subtest %d error, status %d",
774 subcase->number, status);
777 /* unexpected status codes mean errors; ideally, in hardware */
780 if (ctx->status == 0) {
783 ctx->status = status;
784 info ("control queue %02x.%02x, err %d, %d left",
785 reqp->bRequestType, reqp->bRequest,
788 /* FIXME this "unlink everything" exit route should
789 * be a separate test case.
792 /* unlink whatever's still pending */
793 for (i = 1; i < ctx->param->sglen; i++) {
794 struct urb *u = ctx->urb [
795 (i + subcase->number) % ctx->param->sglen];
797 if (u == urb || !u->dev)
799 status = usb_unlink_urb (u);
806 dbg ("urb unlink --> %d", status);
809 status = ctx->status;
813 /* resubmit if we need to, else mark this as done */
814 if ((status == 0) && (ctx->pending < ctx->count)) {
815 if ((status = usb_submit_urb (urb, SLAB_ATOMIC)) != 0) {
816 dbg ("can't resubmit ctrl %02x.%02x, err %d",
817 reqp->bRequestType, reqp->bRequest, status);
824 /* signal completion when nothing's queued */
825 if (ctx->pending == 0)
826 complete (&ctx->complete);
827 spin_unlock (&ctx->lock);
831 test_ctrl_queue (struct usbtest_dev *dev, struct usbtest_param *param)
833 struct usb_device *udev = testdev_to_usbdev (dev);
835 struct ctrl_ctx context;
838 spin_lock_init (&context.lock);
840 init_completion (&context.complete);
841 context.count = param->sglen * param->iterations;
843 context.status = -ENOMEM;
844 context.param = param;
847 /* allocate and init the urbs we'll queue.
848 * as with bulk/intr sglists, sglen is the queue depth; it also
849 * controls which subtests run (more tests than sglen) or rerun.
851 urb = kmalloc (param->sglen * sizeof (struct urb *), SLAB_KERNEL);
854 memset (urb, 0, param->sglen * sizeof (struct urb *));
855 for (i = 0; i < param->sglen; i++) {
856 int pipe = usb_rcvctrlpipe (udev, 0);
859 struct usb_ctrlrequest req;
860 struct subcase *reqp;
863 /* requests here are mostly expected to succeed on any
864 * device, but some are chosen to trigger protocol stalls
867 memset (&req, 0, sizeof req);
868 req.bRequest = USB_REQ_GET_DESCRIPTOR;
869 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
871 switch (i % NUM_SUBCASES) {
872 case 0: // get device descriptor
873 req.wValue = cpu_to_le16 (USB_DT_DEVICE << 8);
874 len = sizeof (struct usb_device_descriptor);
876 case 1: // get first config descriptor (only)
877 req.wValue = cpu_to_le16 ((USB_DT_CONFIG << 8) | 0);
878 len = sizeof (struct usb_config_descriptor);
880 case 2: // get altsetting (OFTEN STALLS)
881 req.bRequest = USB_REQ_GET_INTERFACE;
882 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
883 // index = 0 means first interface
887 case 3: // get interface status
888 req.bRequest = USB_REQ_GET_STATUS;
889 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
893 case 4: // get device status
894 req.bRequest = USB_REQ_GET_STATUS;
895 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
898 case 5: // get device qualifier (MAY STALL)
899 req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8);
900 len = sizeof (struct usb_qualifier_descriptor);
901 if (udev->speed != USB_SPEED_HIGH)
904 case 6: // get first config descriptor, plus interface
905 req.wValue = cpu_to_le16 ((USB_DT_CONFIG << 8) | 0);
906 len = sizeof (struct usb_config_descriptor);
907 len += sizeof (struct usb_interface_descriptor);
909 case 7: // get interface descriptor (ALWAYS STALLS)
910 req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8);
912 len = sizeof (struct usb_interface_descriptor);
915 // NOTE: two consecutive stalls in the queue here.
916 // that tests fault recovery a bit more aggressively.
917 case 8: // clear endpoint halt (USUALLY STALLS)
918 req.bRequest = USB_REQ_CLEAR_FEATURE;
919 req.bRequestType = USB_RECIP_ENDPOINT;
920 // wValue 0 == ep halt
921 // wIndex 0 == ep0 (shouldn't halt!)
923 pipe = usb_sndctrlpipe (udev, 0);
926 case 9: // get endpoint status
927 req.bRequest = USB_REQ_GET_STATUS;
928 req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT;
932 case 10: // trigger short read (EREMOTEIO)
933 req.wValue = cpu_to_le16 ((USB_DT_CONFIG << 8) | 0);
935 expected = -EREMOTEIO;
937 // NOTE: two consecutive _different_ faults in the queue.
938 case 11: // get endpoint descriptor (ALWAYS STALLS)
939 req.wValue = cpu_to_le16 (USB_DT_ENDPOINT << 8);
941 len = sizeof (struct usb_interface_descriptor);
944 // NOTE: sometimes even a third fault in the queue!
945 case 12: // get string 0 descriptor (MAY STALL)
946 req.wValue = cpu_to_le16 (USB_DT_STRING << 8);
947 // string == 0, for language IDs
948 len = sizeof (struct usb_interface_descriptor);
949 // may succeed when > 4 languages
950 expected = EREMOTEIO; // or EPIPE, if no strings
952 case 13: // short read, resembling case 10
953 req.wValue = cpu_to_le16 ((USB_DT_CONFIG << 8) | 0);
954 // last data packet "should" be DATA1, not DATA0
955 len = 1024 - udev->descriptor.bMaxPacketSize0;
956 expected = -EREMOTEIO;
958 case 14: // short read; try to fill the last packet
959 req.wValue = cpu_to_le16 ((USB_DT_DEVICE << 8) | 0);
960 // device descriptor size == 18 bytes
961 len = udev->descriptor.bMaxPacketSize0;
963 case 8: len = 24; break;
964 case 16: len = 32; break;
966 expected = -EREMOTEIO;
969 err ("bogus number of ctrl queue testcases!");
970 context.status = -EINVAL;
973 req.wLength = cpu_to_le16 (len);
974 urb [i] = u = simple_alloc_urb (udev, pipe, len);
978 reqp = usb_buffer_alloc (udev, sizeof *reqp, SLAB_KERNEL,
983 reqp->number = i % NUM_SUBCASES;
984 reqp->expected = expected;
985 u->setup_packet = (char *) &reqp->setup;
987 u->context = &context;
988 u->complete = ctrl_complete;
989 u->transfer_flags |= URB_ASYNC_UNLINK;
994 spin_lock_irq (&context.lock);
995 for (i = 0; i < param->sglen; i++) {
996 context.status = usb_submit_urb (urb [i], SLAB_ATOMIC);
997 if (context.status != 0) {
998 dbg ("can't submit urb[%d], status %d",
1000 context.count = context.pending;
1005 spin_unlock_irq (&context.lock);
1007 /* FIXME set timer and time out; provide a disconnect hook */
1009 /* wait for the last one to complete */
1010 if (context.pending > 0)
1011 wait_for_completion (&context.complete);
1014 for (i = 0; i < param->sglen; i++) {
1017 urb [i]->dev = udev;
1018 if (urb [i]->setup_packet)
1019 usb_buffer_free (udev, sizeof (struct usb_ctrlrequest),
1020 urb [i]->setup_packet,
1021 urb [i]->setup_dma);
1022 simple_free_urb (urb [i]);
1025 return context.status;
1030 /*-------------------------------------------------------------------------*/
1032 static void unlink1_callback (struct urb *urb, struct pt_regs *regs)
1034 int status = urb->status;
1036 // we "know" -EPIPE (stall) never happens
1038 status = usb_submit_urb (urb, SLAB_ATOMIC);
1040 urb->status = status;
1041 complete ((struct completion *) urb->context);
1045 static int unlink1 (struct usbtest_dev *dev, int pipe, int size, int async)
1048 struct completion completion;
1051 init_completion (&completion);
1052 urb = simple_alloc_urb (testdev_to_usbdev (dev), pipe, size);
1055 urb->transfer_flags |= URB_ASYNC_UNLINK;
1056 urb->context = &completion;
1057 urb->complete = unlink1_callback;
1059 /* keep the endpoint busy. there are lots of hc/hcd-internal
1060 * states, and testing should get to all of them over time.
1062 * FIXME want additional tests for when endpoint is STALLing
1063 * due to errors, or is just NAKing requests.
1065 if ((retval = usb_submit_urb (urb, SLAB_KERNEL)) != 0) {
1066 dev_dbg (&dev->intf->dev, "submit fail %d\n", retval);
1070 /* unlinking that should always work. variable delay tests more
1071 * hcd states and code paths, even with little other system load.
1073 msleep (jiffies % (2 * INTERRUPT_RATE));
1076 retval = usb_unlink_urb (urb);
1077 if (retval == -EBUSY || retval == -EIDRM) {
1078 /* we can't unlink urbs while they're completing.
1079 * or if they've completed, and we haven't resubmitted.
1080 * "normal" drivers would prevent resubmission, but
1081 * since we're testing unlink paths, we can't.
1083 dev_dbg (&dev->intf->dev, "unlink retry\n");
1088 if (!(retval == 0 || retval == -EINPROGRESS)) {
1089 dev_dbg (&dev->intf->dev, "unlink fail %d\n", retval);
1093 wait_for_completion (&completion);
1094 retval = urb->status;
1095 simple_free_urb (urb);
1098 return (retval == -ECONNRESET) ? 0 : retval - 1000;
1100 return (retval == -ENOENT || retval == -EPERM) ?
1104 static int unlink_simple (struct usbtest_dev *dev, int pipe, int len)
1108 /* test sync and async paths */
1109 retval = unlink1 (dev, pipe, len, 1);
1111 retval = unlink1 (dev, pipe, len, 0);
1115 /*-------------------------------------------------------------------------*/
1117 static int verify_not_halted (int ep, struct urb *urb)
1122 /* shouldn't look or act halted */
1123 retval = usb_get_status (urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1125 dbg ("ep %02x couldn't get no-halt status, %d", ep, retval);
1129 dbg ("ep %02x bogus status: %04x != 0", ep, status);
1132 retval = simple_io (urb, 1, 0, 0, __FUNCTION__);
1138 static int verify_halted (int ep, struct urb *urb)
1143 /* should look and act halted */
1144 retval = usb_get_status (urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1146 dbg ("ep %02x couldn't get halt status, %d", ep, retval);
1150 dbg ("ep %02x bogus status: %04x != 1", ep, status);
1153 retval = simple_io (urb, 1, 0, -EPIPE, __FUNCTION__);
1154 if (retval != -EPIPE)
1156 retval = simple_io (urb, 1, 0, -EPIPE, "verify_still_halted");
1157 if (retval != -EPIPE)
1162 static int test_halt (int ep, struct urb *urb)
1166 /* shouldn't look or act halted now */
1167 retval = verify_not_halted (ep, urb);
1171 /* set halt (protocol test only), verify it worked */
1172 retval = usb_control_msg (urb->dev, usb_sndctrlpipe (urb->dev, 0),
1173 USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT,
1174 USB_ENDPOINT_HALT, ep,
1175 NULL, 0, USB_CTRL_SET_TIMEOUT);
1177 dbg ("ep %02x couldn't set halt, %d", ep, retval);
1180 retval = verify_halted (ep, urb);
1184 /* clear halt (tests API + protocol), verify it worked */
1185 retval = usb_clear_halt (urb->dev, urb->pipe);
1187 dbg ("ep %02x couldn't clear halt, %d", ep, retval);
1190 retval = verify_not_halted (ep, urb);
1194 /* NOTE: could also verify SET_INTERFACE clear halts ... */
1199 static int halt_simple (struct usbtest_dev *dev)
1205 urb = simple_alloc_urb (testdev_to_usbdev (dev), 0, 512);
1210 ep = usb_pipeendpoint (dev->in_pipe) | USB_DIR_IN;
1211 urb->pipe = dev->in_pipe;
1212 retval = test_halt (ep, urb);
1217 if (dev->out_pipe) {
1218 ep = usb_pipeendpoint (dev->out_pipe);
1219 urb->pipe = dev->out_pipe;
1220 retval = test_halt (ep, urb);
1223 simple_free_urb (urb);
1227 /*-------------------------------------------------------------------------*/
1229 /* Control OUT tests use the vendor control requests from Intel's
1230 * USB 2.0 compliance test device: write a buffer, read it back.
1232 * Intel's spec only _requires_ that it work for one packet, which
1233 * is pretty weak. Some HCDs place limits here; most devices will
1234 * need to be able to handle more than one OUT data packet. We'll
1235 * try whatever we're told to try.
1237 static int ctrl_out (struct usbtest_dev *dev,
1238 unsigned count, unsigned length, unsigned vary)
1240 unsigned i, j, len, retval;
1243 struct usb_device *udev;
1245 if (length < 1 || length > 0xffff || vary >= length)
1248 buf = kmalloc(length, SLAB_KERNEL);
1252 udev = testdev_to_usbdev (dev);
1256 /* NOTE: hardware might well act differently if we pushed it
1257 * with lots back-to-back queued requests.
1259 for (i = 0; i < count; i++) {
1260 /* write patterned data */
1261 for (j = 0; j < len; j++)
1263 retval = usb_control_msg (udev, usb_sndctrlpipe (udev,0),
1264 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR,
1265 0, 0, buf, len, USB_CTRL_SET_TIMEOUT);
1266 if (retval != len) {
1269 INFO(dev, "ctrl_out, wlen %d (expected %d)\n",
1276 /* read it back -- assuming nothing intervened!! */
1277 retval = usb_control_msg (udev, usb_rcvctrlpipe (udev,0),
1278 0x5c, USB_DIR_IN|USB_TYPE_VENDOR,
1279 0, 0, buf, len, USB_CTRL_GET_TIMEOUT);
1280 if (retval != len) {
1283 INFO(dev, "ctrl_out, rlen %d (expected %d)\n",
1290 /* fail if we can't verify */
1291 for (j = 0; j < len; j++) {
1292 if (buf [j] != (u8) (i + j)) {
1293 INFO (dev, "ctrl_out, byte %d is %d not %d\n",
1294 j, buf [j], (u8) i + j);
1306 /* [real world] the "zero bytes IN" case isn't really used.
1307 * hardware can easily trip up in this wierd case, since its
1308 * status stage is IN, not OUT like other ep0in transfers.
1311 len = realworld ? 1 : 0;
1315 INFO (dev, "ctrl_out %s failed, code %d, count %d\n",
1322 /*-------------------------------------------------------------------------*/
1324 /* ISO tests ... mimics common usage
1325 * - buffer length is split into N packets (mostly maxpacket sized)
1326 * - multi-buffers according to sglen
1329 struct iso_context {
1333 struct completion done;
1334 unsigned long errors;
1335 struct usbtest_dev *dev;
1338 static void iso_callback (struct urb *urb, struct pt_regs *regs)
1340 struct iso_context *ctx = urb->context;
1342 spin_lock(&ctx->lock);
1345 if (urb->error_count > 0)
1346 ctx->errors += urb->error_count;
1348 if (urb->status == 0 && ctx->count > (ctx->pending - 1)) {
1349 int status = usb_submit_urb (urb, GFP_ATOMIC);
1354 dev_dbg (&ctx->dev->intf->dev,
1355 "iso resubmit err %d\n",
1358 case -ENODEV: /* disconnected */
1362 simple_free_urb (urb);
1365 if (ctx->pending == 0) {
1367 dev_dbg (&ctx->dev->intf->dev,
1368 "iso test, %lu errors\n",
1370 complete (&ctx->done);
1373 spin_unlock(&ctx->lock);
1376 static struct urb *iso_alloc_urb (
1377 struct usb_device *udev,
1379 struct usb_endpoint_descriptor *desc,
1384 unsigned i, maxp, packets;
1386 if (bytes < 0 || !desc)
1388 maxp = 0x7ff & le16_to_cpu(desc->wMaxPacketSize);
1389 maxp *= 1 + (0x3 & (le16_to_cpu(desc->wMaxPacketSize) >> 11));
1390 packets = (bytes + maxp - 1) / maxp;
1392 urb = usb_alloc_urb (packets, SLAB_KERNEL);
1398 urb->number_of_packets = packets;
1399 urb->transfer_buffer_length = bytes;
1400 urb->transfer_buffer = usb_buffer_alloc (udev, bytes, SLAB_KERNEL,
1401 &urb->transfer_dma);
1402 if (!urb->transfer_buffer) {
1406 memset (urb->transfer_buffer, 0, bytes);
1407 for (i = 0; i < packets; i++) {
1408 /* here, only the last packet will be short */
1409 urb->iso_frame_desc[i].length = min ((unsigned) bytes, maxp);
1410 bytes -= urb->iso_frame_desc[i].length;
1412 urb->iso_frame_desc[i].offset = maxp * i;
1415 urb->complete = iso_callback;
1416 // urb->context = SET BY CALLER
1417 urb->interval = 1 << (desc->bInterval - 1);
1418 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1423 test_iso_queue (struct usbtest_dev *dev, struct usbtest_param *param,
1424 int pipe, struct usb_endpoint_descriptor *desc)
1426 struct iso_context context;
1427 struct usb_device *udev;
1429 unsigned long packets = 0;
1431 struct urb *urbs[10]; /* FIXME no limit */
1433 if (param->sglen > 10)
1436 context.count = param->iterations * param->sglen;
1437 context.pending = param->sglen;
1440 init_completion (&context.done);
1441 spin_lock_init (&context.lock);
1443 memset (urbs, 0, sizeof urbs);
1444 udev = testdev_to_usbdev (dev);
1445 dev_dbg (&dev->intf->dev,
1446 "... iso period %d %sframes, wMaxPacket %04x\n",
1447 1 << (desc->bInterval - 1),
1448 (udev->speed == USB_SPEED_HIGH) ? "micro" : "",
1449 le16_to_cpu(desc->wMaxPacketSize));
1451 for (i = 0; i < param->sglen; i++) {
1452 urbs [i] = iso_alloc_urb (udev, pipe, desc,
1458 packets += urbs[i]->number_of_packets;
1459 urbs [i]->context = &context;
1461 packets *= param->iterations;
1462 dev_dbg (&dev->intf->dev,
1463 "... total %lu msec (%lu packets)\n",
1464 (packets * (1 << (desc->bInterval - 1)))
1465 / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1),
1468 spin_lock_irq (&context.lock);
1469 for (i = 0; i < param->sglen; i++) {
1470 status = usb_submit_urb (urbs [i], SLAB_ATOMIC);
1472 ERROR (dev, "submit iso[%d], error %d\n", i, status);
1474 spin_unlock_irq (&context.lock);
1478 simple_free_urb (urbs [i]);
1482 spin_unlock_irq (&context.lock);
1484 wait_for_completion (&context.done);
1488 for (i = 0; i < param->sglen; i++) {
1490 simple_free_urb (urbs [i]);
1495 /*-------------------------------------------------------------------------*/
1497 /* We only have this one interface to user space, through usbfs.
1498 * User mode code can scan usbfs to find N different devices (maybe on
1499 * different busses) to use when testing, and allocate one thread per
1500 * test. So discovery is simplified, and we have no device naming issues.
1502 * Don't use these only as stress/load tests. Use them along with with
1503 * other USB bus activity: plugging, unplugging, mousing, mp3 playback,
1504 * video capture, and so on. Run different tests at different times, in
1505 * different sequences. Nothing here should interact with other devices,
1506 * except indirectly by consuming USB bandwidth and CPU resources for test
1507 * threads and request completion. But the only way to know that for sure
1508 * is to test when HC queues are in use by many devices.
1512 usbtest_ioctl (struct usb_interface *intf, unsigned int code, void *buf)
1514 struct usbtest_dev *dev = usb_get_intfdata (intf);
1515 struct usb_device *udev = testdev_to_usbdev (dev);
1516 struct usbtest_param *param = buf;
1517 int retval = -EOPNOTSUPP;
1519 struct scatterlist *sg;
1520 struct usb_sg_request req;
1521 struct timeval start;
1524 // FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is.
1526 if (code != USBTEST_REQUEST)
1529 if (param->iterations <= 0 || param->length < 0
1530 || param->sglen < 0 || param->vary < 0)
1533 if (down_interruptible (&dev->sem))
1534 return -ERESTARTSYS;
1536 if (intf->dev.power.power_state.event != PM_EVENT_ON) {
1538 return -EHOSTUNREACH;
1541 /* some devices, like ez-usb default devices, need a non-default
1542 * altsetting to have any active endpoints. some tests change
1543 * altsettings; force a default so most tests don't need to check.
1545 if (dev->info->alt >= 0) {
1548 if (intf->altsetting->desc.bInterfaceNumber) {
1552 res = set_altsetting (dev, dev->info->alt);
1554 dev_err (&intf->dev,
1555 "set altsetting to %d failed, %d\n",
1556 dev->info->alt, res);
1563 * Just a bunch of test cases that every HCD is expected to handle.
1565 * Some may need specific firmware, though it'd be good to have
1566 * one firmware image to handle all the test cases.
1568 * FIXME add more tests! cancel requests, verify the data, control
1569 * queueing, concurrent read+write threads, and so on.
1571 do_gettimeofday (&start);
1572 switch (param->test_num) {
1575 dev_dbg (&intf->dev, "TEST 0: NOP\n");
1579 /* Simple non-queued bulk I/O tests */
1581 if (dev->out_pipe == 0)
1583 dev_dbg (&intf->dev,
1584 "TEST 1: write %d bytes %u times\n",
1585 param->length, param->iterations);
1586 urb = simple_alloc_urb (udev, dev->out_pipe, param->length);
1591 // FIRMWARE: bulk sink (maybe accepts short writes)
1592 retval = simple_io (urb, param->iterations, 0, 0, "test1");
1593 simple_free_urb (urb);
1596 if (dev->in_pipe == 0)
1598 dev_dbg (&intf->dev,
1599 "TEST 2: read %d bytes %u times\n",
1600 param->length, param->iterations);
1601 urb = simple_alloc_urb (udev, dev->in_pipe, param->length);
1606 // FIRMWARE: bulk source (maybe generates short writes)
1607 retval = simple_io (urb, param->iterations, 0, 0, "test2");
1608 simple_free_urb (urb);
1611 if (dev->out_pipe == 0 || param->vary == 0)
1613 dev_dbg (&intf->dev,
1614 "TEST 3: write/%d 0..%d bytes %u times\n",
1615 param->vary, param->length, param->iterations);
1616 urb = simple_alloc_urb (udev, dev->out_pipe, param->length);
1621 // FIRMWARE: bulk sink (maybe accepts short writes)
1622 retval = simple_io (urb, param->iterations, param->vary,
1624 simple_free_urb (urb);
1627 if (dev->in_pipe == 0 || param->vary == 0)
1629 dev_dbg (&intf->dev,
1630 "TEST 4: read/%d 0..%d bytes %u times\n",
1631 param->vary, param->length, param->iterations);
1632 urb = simple_alloc_urb (udev, dev->in_pipe, param->length);
1637 // FIRMWARE: bulk source (maybe generates short writes)
1638 retval = simple_io (urb, param->iterations, param->vary,
1640 simple_free_urb (urb);
1643 /* Queued bulk I/O tests */
1645 if (dev->out_pipe == 0 || param->sglen == 0)
1647 dev_dbg (&intf->dev,
1648 "TEST 5: write %d sglists %d entries of %d bytes\n",
1650 param->sglen, param->length);
1651 sg = alloc_sglist (param->sglen, param->length, 0);
1656 // FIRMWARE: bulk sink (maybe accepts short writes)
1657 retval = perform_sglist (udev, param->iterations, dev->out_pipe,
1658 &req, sg, param->sglen);
1659 free_sglist (sg, param->sglen);
1663 if (dev->in_pipe == 0 || param->sglen == 0)
1665 dev_dbg (&intf->dev,
1666 "TEST 6: read %d sglists %d entries of %d bytes\n",
1668 param->sglen, param->length);
1669 sg = alloc_sglist (param->sglen, param->length, 0);
1674 // FIRMWARE: bulk source (maybe generates short writes)
1675 retval = perform_sglist (udev, param->iterations, dev->in_pipe,
1676 &req, sg, param->sglen);
1677 free_sglist (sg, param->sglen);
1680 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0)
1682 dev_dbg (&intf->dev,
1683 "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n",
1684 param->vary, param->iterations,
1685 param->sglen, param->length);
1686 sg = alloc_sglist (param->sglen, param->length, param->vary);
1691 // FIRMWARE: bulk sink (maybe accepts short writes)
1692 retval = perform_sglist (udev, param->iterations, dev->out_pipe,
1693 &req, sg, param->sglen);
1694 free_sglist (sg, param->sglen);
1697 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0)
1699 dev_dbg (&intf->dev,
1700 "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n",
1701 param->vary, param->iterations,
1702 param->sglen, param->length);
1703 sg = alloc_sglist (param->sglen, param->length, param->vary);
1708 // FIRMWARE: bulk source (maybe generates short writes)
1709 retval = perform_sglist (udev, param->iterations, dev->in_pipe,
1710 &req, sg, param->sglen);
1711 free_sglist (sg, param->sglen);
1714 /* non-queued sanity tests for control (chapter 9 subset) */
1717 dev_dbg (&intf->dev,
1718 "TEST 9: ch9 (subset) control tests, %d times\n",
1720 for (i = param->iterations; retval == 0 && i--; /* NOP */)
1721 retval = ch9_postconfig (dev);
1723 dbg ("ch9 subset failed, iterations left %d", i);
1726 /* queued control messaging */
1728 if (param->sglen == 0)
1731 dev_dbg (&intf->dev,
1732 "TEST 10: queue %d control calls, %d times\n",
1735 retval = test_ctrl_queue (dev, param);
1738 /* simple non-queued unlinks (ring with one urb) */
1740 if (dev->in_pipe == 0 || !param->length)
1743 dev_dbg (&intf->dev, "TEST 11: unlink %d reads of %d\n",
1744 param->iterations, param->length);
1745 for (i = param->iterations; retval == 0 && i--; /* NOP */)
1746 retval = unlink_simple (dev, dev->in_pipe,
1749 dev_dbg (&intf->dev, "unlink reads failed %d, "
1750 "iterations left %d\n", retval, i);
1753 if (dev->out_pipe == 0 || !param->length)
1756 dev_dbg (&intf->dev, "TEST 12: unlink %d writes of %d\n",
1757 param->iterations, param->length);
1758 for (i = param->iterations; retval == 0 && i--; /* NOP */)
1759 retval = unlink_simple (dev, dev->out_pipe,
1762 dev_dbg (&intf->dev, "unlink writes failed %d, "
1763 "iterations left %d\n", retval, i);
1768 if (dev->out_pipe == 0 && dev->in_pipe == 0)
1771 dev_dbg (&intf->dev, "TEST 13: set/clear %d halts\n",
1773 for (i = param->iterations; retval == 0 && i--; /* NOP */)
1774 retval = halt_simple (dev);
1777 DBG (dev, "halts failed, iterations left %d\n", i);
1780 /* control write tests */
1782 if (!dev->info->ctrl_out)
1784 dev_dbg (&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n",
1786 realworld ? 1 : 0, param->length,
1788 retval = ctrl_out (dev, param->iterations,
1789 param->length, param->vary);
1792 /* iso write tests */
1794 if (dev->out_iso_pipe == 0 || param->sglen == 0)
1796 dev_dbg (&intf->dev,
1797 "TEST 15: write %d iso, %d entries of %d bytes\n",
1799 param->sglen, param->length);
1800 // FIRMWARE: iso sink
1801 retval = test_iso_queue (dev, param,
1802 dev->out_iso_pipe, dev->iso_out);
1805 /* iso read tests */
1807 if (dev->in_iso_pipe == 0 || param->sglen == 0)
1809 dev_dbg (&intf->dev,
1810 "TEST 16: read %d iso, %d entries of %d bytes\n",
1812 param->sglen, param->length);
1813 // FIRMWARE: iso source
1814 retval = test_iso_queue (dev, param,
1815 dev->in_iso_pipe, dev->iso_in);
1818 // FIXME unlink from queue (ring with N urbs)
1820 // FIXME scatterlist cancel (needs helper thread)
1823 do_gettimeofday (¶m->duration);
1824 param->duration.tv_sec -= start.tv_sec;
1825 param->duration.tv_usec -= start.tv_usec;
1826 if (param->duration.tv_usec < 0) {
1827 param->duration.tv_usec += 1000 * 1000;
1828 param->duration.tv_sec -= 1;
1834 /*-------------------------------------------------------------------------*/
1836 static unsigned force_interrupt = 0;
1837 module_param (force_interrupt, uint, 0);
1838 MODULE_PARM_DESC (force_interrupt, "0 = test default; else interrupt");
1841 static unsigned short vendor;
1842 module_param(vendor, ushort, 0);
1843 MODULE_PARM_DESC (vendor, "vendor code (from usb-if)");
1845 static unsigned short product;
1846 module_param(product, ushort, 0);
1847 MODULE_PARM_DESC (product, "product code (from vendor)");
1851 usbtest_probe (struct usb_interface *intf, const struct usb_device_id *id)
1853 struct usb_device *udev;
1854 struct usbtest_dev *dev;
1855 struct usbtest_info *info;
1856 char *rtest, *wtest;
1857 char *irtest, *iwtest;
1859 udev = interface_to_usbdev (intf);
1862 /* specify devices by module parameters? */
1863 if (id->match_flags == 0) {
1864 /* vendor match required, product match optional */
1865 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor)
1867 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product)
1869 dbg ("matched module params, vend=0x%04x prod=0x%04x",
1870 le16_to_cpu(udev->descriptor.idVendor),
1871 le16_to_cpu(udev->descriptor.idProduct));
1875 dev = kmalloc (sizeof *dev, SLAB_KERNEL);
1878 memset (dev, 0, sizeof *dev);
1879 info = (struct usbtest_info *) id->driver_info;
1881 init_MUTEX (&dev->sem);
1885 /* cacheline-aligned scratch for i/o */
1886 if ((dev->buf = kmalloc (TBUF_SIZE, SLAB_KERNEL)) == NULL) {
1891 /* NOTE this doesn't yet test the handful of difference that are
1892 * visible with high speed interrupts: bigger maxpacket (1K) and
1893 * "high bandwidth" modes (up to 3 packets/uframe).
1896 irtest = iwtest = "";
1897 if (force_interrupt || udev->speed == USB_SPEED_LOW) {
1899 dev->in_pipe = usb_rcvintpipe (udev, info->ep_in);
1903 dev->out_pipe = usb_sndintpipe (udev, info->ep_out);
1904 wtest = " intr-out";
1907 if (info->autoconf) {
1910 status = get_endpoints (dev, intf);
1912 dbg ("couldn't get endpoints, %d\n", status);
1915 /* may find bulk or ISO pipes */
1918 dev->in_pipe = usb_rcvbulkpipe (udev,
1921 dev->out_pipe = usb_sndbulkpipe (udev,
1927 wtest = " bulk-out";
1928 if (dev->in_iso_pipe)
1930 if (dev->out_iso_pipe)
1931 iwtest = " iso-out";
1934 usb_set_intfdata (intf, dev);
1935 dev_info (&intf->dev, "%s\n", info->name);
1936 dev_info (&intf->dev, "%s speed {control%s%s%s%s%s} tests%s\n",
1938 switch (udev->speed) {
1939 case USB_SPEED_LOW: tmp = "low"; break;
1940 case USB_SPEED_FULL: tmp = "full"; break;
1941 case USB_SPEED_HIGH: tmp = "high"; break;
1942 default: tmp = "unknown"; break;
1944 info->ctrl_out ? " in/out" : "",
1947 info->alt >= 0 ? " (+alt)" : "");
1951 static int usbtest_suspend (struct usb_interface *intf, pm_message_t message)
1953 struct usbtest_dev *dev = usb_get_intfdata (intf);
1956 intf->dev.power.power_state = PMSG_SUSPEND;
1961 static int usbtest_resume (struct usb_interface *intf)
1963 struct usbtest_dev *dev = usb_get_intfdata (intf);
1966 intf->dev.power.power_state = PMSG_ON;
1972 static void usbtest_disconnect (struct usb_interface *intf)
1974 struct usbtest_dev *dev = usb_get_intfdata (intf);
1978 usb_set_intfdata (intf, NULL);
1979 dev_dbg (&intf->dev, "disconnect\n");
1983 /* Basic testing only needs a device that can source or sink bulk traffic.
1984 * Any device can test control transfers (default with GENERIC binding).
1986 * Several entries work with the default EP0 implementation that's built
1987 * into EZ-USB chips. There's a default vendor ID which can be overridden
1988 * by (very) small config EEPROMS, but otherwise all these devices act
1989 * identically until firmware is loaded: only EP0 works. It turns out
1990 * to be easy to make other endpoints work, without modifying that EP0
1991 * behavior. For now, we expect that kind of firmware.
1994 /* an21xx or fx versions of ez-usb */
1995 static struct usbtest_info ez1_info = {
1996 .name = "EZ-USB device",
2002 /* fx2 version of ez-usb */
2003 static struct usbtest_info ez2_info = {
2004 .name = "FX2 device",
2010 /* ezusb family device with dedicated usb test firmware,
2012 static struct usbtest_info fw_info = {
2013 .name = "usb test device",
2017 .autoconf = 1, // iso and ctrl_out need autoconf
2019 .iso = 1, // iso_ep's are #8 in/out
2022 /* peripheral running Linux and 'zero.c' test firmware, or
2023 * its user-mode cousin. different versions of this use
2024 * different hardware with the same vendor/product codes.
2025 * host side MUST rely on the endpoint descriptors.
2027 static struct usbtest_info gz_info = {
2028 .name = "Linux gadget zero",
2034 static struct usbtest_info um_info = {
2035 .name = "Linux user mode test driver",
2040 static struct usbtest_info um2_info = {
2041 .name = "Linux user mode ISO test driver",
2048 /* this is a nice source of high speed bulk data;
2049 * uses an FX2, with firmware provided in the device
2051 static struct usbtest_info ibot2_info = {
2052 .name = "iBOT2 webcam",
2059 /* we can use any device to test control traffic */
2060 static struct usbtest_info generic_info = {
2061 .name = "Generic USB device",
2066 // FIXME remove this
2067 static struct usbtest_info hact_info = {
2075 static struct usb_device_id id_table [] = {
2077 { USB_DEVICE (0x0547, 0x1002),
2078 .driver_info = (unsigned long) &hact_info,
2081 /*-------------------------------------------------------------*/
2083 /* EZ-USB devices which download firmware to replace (or in our
2084 * case augment) the default device implementation.
2087 /* generic EZ-USB FX controller */
2088 { USB_DEVICE (0x0547, 0x2235),
2089 .driver_info = (unsigned long) &ez1_info,
2092 /* CY3671 development board with EZ-USB FX */
2093 { USB_DEVICE (0x0547, 0x0080),
2094 .driver_info = (unsigned long) &ez1_info,
2097 /* generic EZ-USB FX2 controller (or development board) */
2098 { USB_DEVICE (0x04b4, 0x8613),
2099 .driver_info = (unsigned long) &ez2_info,
2102 /* re-enumerated usb test device firmware */
2103 { USB_DEVICE (0xfff0, 0xfff0),
2104 .driver_info = (unsigned long) &fw_info,
2107 /* "Gadget Zero" firmware runs under Linux */
2108 { USB_DEVICE (0x0525, 0xa4a0),
2109 .driver_info = (unsigned long) &gz_info,
2112 /* so does a user-mode variant */
2113 { USB_DEVICE (0x0525, 0xa4a4),
2114 .driver_info = (unsigned long) &um_info,
2117 /* ... and a user-mode variant that talks iso */
2118 { USB_DEVICE (0x0525, 0xa4a3),
2119 .driver_info = (unsigned long) &um2_info,
2123 /* Keyspan 19qi uses an21xx (original EZ-USB) */
2124 // this does not coexist with the real Keyspan 19qi driver!
2125 { USB_DEVICE (0x06cd, 0x010b),
2126 .driver_info = (unsigned long) &ez1_info,
2130 /*-------------------------------------------------------------*/
2133 /* iBOT2 makes a nice source of high speed bulk-in data */
2134 // this does not coexist with a real iBOT2 driver!
2135 { USB_DEVICE (0x0b62, 0x0059),
2136 .driver_info = (unsigned long) &ibot2_info,
2140 /*-------------------------------------------------------------*/
2143 /* module params can specify devices to use for control tests */
2144 { .driver_info = (unsigned long) &generic_info, },
2147 /*-------------------------------------------------------------*/
2151 MODULE_DEVICE_TABLE (usb, id_table);
2153 static struct usb_driver usbtest_driver = {
2154 .owner = THIS_MODULE,
2156 .id_table = id_table,
2157 .probe = usbtest_probe,
2158 .ioctl = usbtest_ioctl,
2159 .disconnect = usbtest_disconnect,
2160 .suspend = usbtest_suspend,
2161 .resume = usbtest_resume,
2164 /*-------------------------------------------------------------------------*/
2166 static int __init usbtest_init (void)
2170 dbg ("params: vend=0x%04x prod=0x%04x", vendor, product);
2172 return usb_register (&usbtest_driver);
2174 module_init (usbtest_init);
2176 static void __exit usbtest_exit (void)
2178 usb_deregister (&usbtest_driver);
2180 module_exit (usbtest_exit);
2182 MODULE_DESCRIPTION ("USB Core/HCD Testing Driver");
2183 MODULE_LICENSE ("GPL");