drivers/usb/misc/usbtest.c

   1 #include <linux/kernel.h>
   2 #include <linux/errno.h>
   3 #include <linux/init.h>
   4 #include <linux/slab.h>
   5 #include <linux/mm.h>
   6 #include <linux/module.h>
   7 #include <linux/moduleparam.h>
   8 #include <linux/scatterlist.h>
   9 #include <linux/mutex.h>
  10
  11 #include <linux/usb.h>
  12
  13
  14 /*-------------------------------------------------------------------------*/
  15
  16 static int override_alt = -1;
  17 module_param_named(alt, override_alt, int, 0644);
  18 MODULE_PARM_DESC(alt, ">= 0 to override altsetting selection");
  19
  20 /*-------------------------------------------------------------------------*/
  21
  22 /* FIXME make these public somewhere; usbdevfs.h? */
  23 struct usbtest_param {
  24         /* inputs */
  25         unsigned                test_num;       /* 0..(TEST_CASES-1) */
  26         unsigned                iterations;
  27         unsigned                length;
  28         unsigned                vary;
  29         unsigned                sglen;
  30
  31         /* outputs */
  32         struct timeval          duration;
  33 };
  34 #define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param)
  35
  36 /*-------------------------------------------------------------------------*/
  37
  38 #define GENERIC         /* let probe() bind using module params */
  39
  40 /* Some devices that can be used for testing will have "real" drivers.
  41  * Entries for those need to be enabled here by hand, after disabling
  42  * that "real" driver.
  43  */
  44 //#define       IBOT2           /* grab iBOT2 webcams */
  45 //#define       KEYSPAN_19Qi    /* grab un-renumerated serial adapter */
  46
  47 /*-------------------------------------------------------------------------*/
  48
  49 struct usbtest_info {
  50         const char              *name;
  51         u8                      ep_in;          /* bulk/intr source */
  52         u8                      ep_out;         /* bulk/intr sink */
  53         unsigned                autoconf:1;
  54         unsigned                ctrl_out:1;
  55         unsigned                iso:1;          /* try iso in/out */
  56         int                     alt;
  57 };
  58
  59 /* this is accessed only through usbfs ioctl calls.
  60  * one ioctl to issue a test ... one lock per device.
  61  * tests create other threads if they need them.
  62  * urbs and buffers are allocated dynamically,
  63  * and data generated deterministically.
  64  */
  65 struct usbtest_dev {
  66         struct usb_interface    *intf;
  67         struct usbtest_info     *info;
  68         int                     in_pipe;
  69         int                     out_pipe;
  70         int                     in_iso_pipe;
  71         int                     out_iso_pipe;
  72         struct usb_endpoint_descriptor  *iso_in, *iso_out;
  73         struct mutex            lock;
  74
  75 #define TBUF_SIZE       256
  76         u8                      *buf;
  77 };
  78
  79 static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test)
  80 {
  81         return interface_to_usbdev(test->intf);
  82 }
  83
  84 /* set up all urbs so they can be used with either bulk or interrupt */
  85 #define INTERRUPT_RATE          1       /* msec/transfer */
  86
  87 #define ERROR(tdev, fmt, args...) \
  88         dev_err(&(tdev)->intf->dev , fmt , ## args)
  89 #define WARNING(tdev, fmt, args...) \
  90         dev_warn(&(tdev)->intf->dev , fmt , ## args)
  91
  92 #define GUARD_BYTE      0xA5
  93
  94 /*-------------------------------------------------------------------------*/
  95
  96 static int
  97 get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf)
  98 {
  99         int                             tmp;
 100         struct usb_host_interface       *alt;
 101         struct usb_host_endpoint        *in, *out;
 102         struct usb_host_endpoint        *iso_in, *iso_out;
 103         struct usb_device               *udev;
 104
 105         for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
 106                 unsigned        ep;
 107
 108                 in = out = NULL;
 109                 iso_in = iso_out = NULL;
 110                 alt = intf->altsetting + tmp;
 111
 112                 if (override_alt >= 0 &&
 113                                 override_alt != alt->desc.bAlternateSetting)
 114                         continue;
 115
 116                 /* take the first altsetting with in-bulk + out-bulk;
 117                  * ignore other endpoints and altsettings.
 118                  */
 119                 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
 120                         struct usb_host_endpoint        *e;
 121
 122                         e = alt->endpoint + ep;
 123                         switch (usb_endpoint_type(&e->desc)) {
 124                         case USB_ENDPOINT_XFER_BULK:
 125                                 break;
 126                         case USB_ENDPOINT_XFER_ISOC:
 127                                 if (dev->info->iso)
 128                                         goto try_iso;
 129                                 /* FALLTHROUGH */
 130                         default:
 131                                 continue;
 132                         }
 133                         if (usb_endpoint_dir_in(&e->desc)) {
 134                                 if (!in)
 135                                         in = e;
 136                         } else {
 137                                 if (!out)
 138                                         out = e;
 139                         }
 140                         continue;
 141 try_iso:
 142                         if (usb_endpoint_dir_in(&e->desc)) {
 143                                 if (!iso_in)
 144                                         iso_in = e;
 145                         } else {
 146                                 if (!iso_out)
 147                                         iso_out = e;
 148                         }
 149                 }
 150                 if ((in && out)  ||  iso_in || iso_out)
 151                         goto found;
 152         }
 153         return -EINVAL;
 154
 155 found:
 156         udev = testdev_to_usbdev(dev);
 157         dev->info->alt = alt->desc.bAlternateSetting;
 158         if (alt->desc.bAlternateSetting != 0) {
 159                 tmp = usb_set_interface(udev,
 160                                 alt->desc.bInterfaceNumber,
 161                                 alt->desc.bAlternateSetting);
 162                 if (tmp < 0)
 163                         return tmp;
 164         }
 165
 166         if (in) {
 167                 dev->in_pipe = usb_rcvbulkpipe(udev,
 168                         in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 169                 dev->out_pipe = usb_sndbulkpipe(udev,
 170                         out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 171         }
 172         if (iso_in) {
 173                 dev->iso_in = &iso_in->desc;
 174                 dev->in_iso_pipe = usb_rcvisocpipe(udev,
 175                                 iso_in->desc.bEndpointAddress
 176                                         & USB_ENDPOINT_NUMBER_MASK);
 177         }
 178
 179         if (iso_out) {
 180                 dev->iso_out = &iso_out->desc;
 181                 dev->out_iso_pipe = usb_sndisocpipe(udev,
 182                                 iso_out->desc.bEndpointAddress
 183                                         & USB_ENDPOINT_NUMBER_MASK);
 184         }
 185         return 0;
 186 }
 187
 188 /*-------------------------------------------------------------------------*/
 189
 190 /* Support for testing basic non-queued I/O streams.
 191  *
 192  * These just package urbs as requests that can be easily canceled.
 193  * Each urb's data buffer is dynamically allocated; callers can fill
 194  * them with non-zero test data (or test for it) when appropriate.
 195  */
 196
 197 static void simple_callback(struct urb *urb)
 198 {
 199         complete(urb->context);
 200 }
 201
 202 static struct urb *usbtest_alloc_urb(
 203         struct usb_device       *udev,
 204         int                     pipe,
 205         unsigned long           bytes,
 206         unsigned                transfer_flags,
 207         unsigned                offset)
 208 {
 209         struct urb              *urb;
 210
 211         urb = usb_alloc_urb(0, GFP_KERNEL);
 212         if (!urb)
 213                 return urb;
 214         usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, simple_callback, NULL);
 215         urb->interval = (udev->speed == USB_SPEED_HIGH)
 216                         ? (INTERRUPT_RATE << 3)
 217                         : INTERRUPT_RATE;
 218         urb->transfer_flags = transfer_flags;
 219         if (usb_pipein(pipe))
 220                 urb->transfer_flags |= URB_SHORT_NOT_OK;
 221
 222         if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
 223                 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
 224                         GFP_KERNEL, &urb->transfer_dma);
 225         else
 226                 urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL);
 227
 228         if (!urb->transfer_buffer) {
 229                 usb_free_urb(urb);
 230                 return NULL;
 231         }
 232
 233         /* To test unaligned transfers add an offset and fill the
 234                 unused memory with a guard value */
 235         if (offset) {
 236                 memset(urb->transfer_buffer, GUARD_BYTE, offset);
 237                 urb->transfer_buffer += offset;
 238                 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
 239                         urb->transfer_dma += offset;
 240         }
 241
 242         /* For inbound transfers use guard byte so that test fails if
 243                 data not correctly copied */
 244         memset(urb->transfer_buffer,
 245                         usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
 246                         bytes);
 247         return urb;
 248 }
 249
 250 static struct urb *simple_alloc_urb(
 251         struct usb_device       *udev,
 252         int                     pipe,
 253         unsigned long           bytes)
 254 {
 255         return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0);
 256 }
 257
 258 static unsigned pattern;
 259 static unsigned mod_pattern;
 260 module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR);
 261 MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)");
 262
 263 static inline void simple_fill_buf(struct urb *urb)
 264 {
 265         unsigned        i;
 266         u8              *buf = urb->transfer_buffer;
 267         unsigned        len = urb->transfer_buffer_length;
 268
 269         switch (pattern) {
 270         default:
 271                 /* FALLTHROUGH */
 272         case 0:
 273                 memset(buf, 0, len);
 274                 break;
 275         case 1:                 /* mod63 */
 276                 for (i = 0; i < len; i++)
 277                         *buf++ = (u8) (i % 63);
 278                 break;
 279         }
 280 }
 281
 282 static inline unsigned long buffer_offset(void *buf)
 283 {
 284         return (unsigned long)buf & (ARCH_KMALLOC_MINALIGN - 1);
 285 }
 286
 287 static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb)
 288 {
 289         u8 *buf = urb->transfer_buffer;
 290         u8 *guard = buf - buffer_offset(buf);
 291         unsigned i;
 292
 293         for (i = 0; guard < buf; i++, guard++) {
 294                 if (*guard != GUARD_BYTE) {
 295                         ERROR(tdev, "guard byte[%d] %d (not %d)\n",
 296                                 i, *guard, GUARD_BYTE);
 297                         return -EINVAL;
 298                 }
 299         }
 300         return 0;
 301 }
 302
 303 static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb)
 304 {
 305         unsigned        i;
 306         u8              expected;
 307         u8              *buf = urb->transfer_buffer;
 308         unsigned        len = urb->actual_length;
 309
 310         int ret = check_guard_bytes(tdev, urb);
 311         if (ret)
 312                 return ret;
 313
 314         for (i = 0; i < len; i++, buf++) {
 315                 switch (pattern) {
 316                 /* all-zeroes has no synchronization issues */
 317                 case 0:
 318                         expected = 0;
 319                         break;
 320                 /* mod63 stays in sync with short-terminated transfers,
 321                  * or otherwise when host and gadget agree on how large
 322                  * each usb transfer request should be.  resync is done
 323                  * with set_interface or set_config.
 324                  */
 325                 case 1:                 /* mod63 */
 326                         expected = i % 63;
 327                         break;
 328                 /* always fail unsupported patterns */
 329                 default:
 330                         expected = !*buf;
 331                         break;
 332                 }
 333                 if (*buf == expected)
 334                         continue;
 335                 ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected);
 336                 return -EINVAL;
 337         }
 338         return 0;
 339 }
 340
 341 static void simple_free_urb(struct urb *urb)
 342 {
 343         unsigned long offset = buffer_offset(urb->transfer_buffer);
 344
 345         if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
 346                 usb_free_coherent(
 347                         urb->dev,
 348                         urb->transfer_buffer_length + offset,
 349                         urb->transfer_buffer - offset,
 350                         urb->transfer_dma - offset);
 351         else
 352                 kfree(urb->transfer_buffer - offset);
 353         usb_free_urb(urb);
 354 }
 355
 356 static int simple_io(
 357         struct usbtest_dev      *tdev,
 358         struct urb              *urb,
 359         int                     iterations,
 360         int                     vary,
 361         int                     expected,
 362         const char              *label
 363 )
 364 {
 365         struct usb_device       *udev = urb->dev;
 366         int                     max = urb->transfer_buffer_length;
 367         struct completion       completion;
 368         int                     retval = 0;
 369
 370         urb->context = &completion;
 371         while (retval == 0 && iterations-- > 0) {
 372                 init_completion(&completion);
 373                 if (usb_pipeout(urb->pipe)) {
 374                         simple_fill_buf(urb);
 375                         urb->transfer_flags |= URB_ZERO_PACKET;
 376                 }
 377                 retval = usb_submit_urb(urb, GFP_KERNEL);
 378                 if (retval != 0)
 379                         break;
 380
 381                 /* NOTE:  no timeouts; can't be broken out of by interrupt */
 382                 wait_for_completion(&completion);
 383                 retval = urb->status;
 384                 urb->dev = udev;
 385                 if (retval == 0 && usb_pipein(urb->pipe))
 386                         retval = simple_check_buf(tdev, urb);
 387
 388                 if (vary) {
 389                         int     len = urb->transfer_buffer_length;
 390
 391                         len += vary;
 392                         len %= max;
 393                         if (len == 0)
 394                                 len = (vary < max) ? vary : max;
 395                         urb->transfer_buffer_length = len;
 396                 }
 397
 398                 /* FIXME if endpoint halted, clear halt (and log) */
 399         }
 400         urb->transfer_buffer_length = max;
 401
 402         if (expected != retval)
 403                 dev_err(&udev->dev,
 404                         "%s failed, iterations left %d, status %d (not %d)\n",
 405                                 label, iterations, retval, expected);
 406         return retval;
 407 }
 408
 409
 410 /*-------------------------------------------------------------------------*/
 411
 412 /* We use scatterlist primitives to test queued I/O.
 413  * Yes, this also tests the scatterlist primitives.
 414  */
 415
 416 static void free_sglist(struct scatterlist *sg, int nents)
 417 {
 418         unsigned                i;
 419
 420         if (!sg)
 421                 return;
 422         for (i = 0; i < nents; i++) {
 423                 if (!sg_page(&sg[i]))
 424                         continue;
 425                 kfree(sg_virt(&sg[i]));
 426         }
 427         kfree(sg);
 428 }
 429
 430 static struct scatterlist *
 431 alloc_sglist(int nents, int max, int vary)
 432 {
 433         struct scatterlist      *sg;
 434         unsigned                i;
 435         unsigned                size = max;
 436
 437         if (max == 0)
 438                 return NULL;
 439
 440         sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL);
 441         if (!sg)
 442                 return NULL;
 443         sg_init_table(sg, nents);
 444
 445         for (i = 0; i < nents; i++) {
 446                 char            *buf;
 447                 unsigned        j;
 448
 449                 buf = kzalloc(size, GFP_KERNEL);
 450                 if (!buf) {
 451                         free_sglist(sg, i);
 452                         return NULL;
 453                 }
 454
 455                 /* kmalloc pages are always physically contiguous! */
 456                 sg_set_buf(&sg[i], buf, size);
 457
 458                 switch (pattern) {
 459                 case 0:
 460                         /* already zeroed */
 461                         break;
 462                 case 1:
 463                         for (j = 0; j < size; j++)
 464                                 *buf++ = (u8) (j % 63);
 465                         break;
 466                 }
 467
 468                 if (vary) {
 469                         size += vary;
 470                         size %= max;
 471                         if (size == 0)
 472                                 size = (vary < max) ? vary : max;
 473                 }
 474         }
 475
 476         return sg;
 477 }
 478
 479 static int perform_sglist(
 480         struct usbtest_dev      *tdev,
 481         unsigned                iterations,
 482         int                     pipe,
 483         struct usb_sg_request   *req,
 484         struct scatterlist      *sg,
 485         int                     nents
 486 )
 487 {
 488         struct usb_device       *udev = testdev_to_usbdev(tdev);
 489         int                     retval = 0;
 490
 491         while (retval == 0 && iterations-- > 0) {
 492                 retval = usb_sg_init(req, udev, pipe,
 493                                 (udev->speed == USB_SPEED_HIGH)
 494                                         ? (INTERRUPT_RATE << 3)
 495                                         : INTERRUPT_RATE,
 496                                 sg, nents, 0, GFP_KERNEL);
 497
 498                 if (retval)
 499                         break;
 500                 usb_sg_wait(req);
 501                 retval = req->status;
 502
 503                 /* FIXME check resulting data pattern */
 504
 505                 /* FIXME if endpoint halted, clear halt (and log) */
 506         }
 507
 508         /* FIXME for unlink or fault handling tests, don't report
 509          * failure if retval is as we expected ...
 510          */
 511         if (retval)
 512                 ERROR(tdev, "perform_sglist failed, "
 513                                 "iterations left %d, status %d\n",
 514                                 iterations, retval);
 515         return retval;
 516 }
 517
 518
 519 /*-------------------------------------------------------------------------*/
 520
 521 /* unqueued control message testing
 522  *
 523  * there's a nice set of device functional requirements in chapter 9 of the
 524  * usb 2.0 spec, which we can apply to ANY device, even ones that don't use
 525  * special test firmware.
 526  *
 527  * we know the device is configured (or suspended) by the time it's visible
 528  * through usbfs.  we can't change that, so we won't test enumeration (which
 529  * worked 'well enough' to get here, this time), power management (ditto),
 530  * or remote wakeup (which needs human interaction).
 531  */
 532
 533 static unsigned realworld = 1;
 534 module_param(realworld, uint, 0);
 535 MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance");
 536
 537 static int get_altsetting(struct usbtest_dev *dev)
 538 {
 539         struct usb_interface    *iface = dev->intf;
 540         struct usb_device       *udev = interface_to_usbdev(iface);
 541         int                     retval;
 542
 543         retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 544                         USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE,
 545                         0, iface->altsetting[0].desc.bInterfaceNumber,
 546                         dev->buf, 1, USB_CTRL_GET_TIMEOUT);
 547         switch (retval) {
 548         case 1:
 549                 return dev->buf[0];
 550         case 0:
 551                 retval = -ERANGE;
 552                 /* FALLTHROUGH */
 553         default:
 554                 return retval;
 555         }
 556 }
 557
 558 static int set_altsetting(struct usbtest_dev *dev, int alternate)
 559 {
 560         struct usb_interface            *iface = dev->intf;
 561         struct usb_device               *udev;
 562
 563         if (alternate < 0 || alternate >= 256)
 564                 return -EINVAL;
 565
 566         udev = interface_to_usbdev(iface);
 567         return usb_set_interface(udev,
 568                         iface->altsetting[0].desc.bInterfaceNumber,
 569                         alternate);
 570 }
 571
 572 static int is_good_config(struct usbtest_dev *tdev, int len)
 573 {
 574         struct usb_config_descriptor    *config;
 575
 576         if (len < sizeof(*config))
 577                 return 0;
 578         config = (struct usb_config_descriptor *) tdev->buf;
 579
 580         switch (config->bDescriptorType) {
 581         case USB_DT_CONFIG:
 582         case USB_DT_OTHER_SPEED_CONFIG:
 583                 if (config->bLength != 9) {
 584                         ERROR(tdev, "bogus config descriptor length\n");
 585                         return 0;
 586                 }
 587                 /* this bit 'must be 1' but often isn't */
 588                 if (!realworld && !(config->bmAttributes & 0x80)) {
 589                         ERROR(tdev, "high bit of config attributes not set\n");
 590                         return 0;
 591                 }
 592                 if (config->bmAttributes & 0x1f) {      /* reserved == 0 */
 593                         ERROR(tdev, "reserved config bits set\n");
 594                         return 0;
 595                 }
 596                 break;
 597         default:
 598                 return 0;
 599         }
 600
 601         if (le16_to_cpu(config->wTotalLength) == len)   /* read it all */
 602                 return 1;
 603         if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE)     /* max partial read */
 604                 return 1;
 605         ERROR(tdev, "bogus config descriptor read size\n");
 606         return 0;
 607 }
 608
 609 static int is_good_ext(struct usbtest_dev *tdev, u8 *buf)
 610 {
 611         struct usb_ext_cap_descriptor *ext;
 612         u32 attr;
 613
 614         ext = (struct usb_ext_cap_descriptor *) buf;
 615
 616         if (ext->bLength != USB_DT_USB_EXT_CAP_SIZE) {
 617                 ERROR(tdev, "bogus usb 2.0 extension descriptor length\n");
 618                 return 0;
 619         }
 620
 621         attr = le32_to_cpu(ext->bmAttributes);
 622         /* bits[1:4] is used and others are reserved */
 623         if (attr & ~0x1e) {     /* reserved == 0 */
 624                 ERROR(tdev, "reserved bits set\n");
 625                 return 0;
 626         }
 627
 628         return 1;
 629 }
 630
 631 static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf)
 632 {
 633         struct usb_ss_cap_descriptor *ss;
 634
 635         ss = (struct usb_ss_cap_descriptor *) buf;
 636
 637         if (ss->bLength != USB_DT_USB_SS_CAP_SIZE) {
 638                 ERROR(tdev, "bogus superspeed device capability descriptor length\n");
 639                 return 0;
 640         }
 641
 642         /*
 643          * only bit[1] of bmAttributes is used for LTM and others are
 644          * reserved
 645          */
 646         if (ss->bmAttributes & ~0x02) { /* reserved == 0 */
 647                 ERROR(tdev, "reserved bits set in bmAttributes\n");
 648                 return 0;
 649         }
 650
 651         /* bits[0:3] of wSpeedSupported is used and others are reserved */
 652         if (le16_to_cpu(ss->wSpeedSupported) & ~0x0f) { /* reserved == 0 */
 653                 ERROR(tdev, "reserved bits set in wSpeedSupported\n");
 654                 return 0;
 655         }
 656
 657         return 1;
 658 }
 659
 660 /* sanity test for standard requests working with usb_control_mesg() and some
 661  * of the utility functions which use it.
 662  *
 663  * this doesn't test how endpoint halts behave or data toggles get set, since
 664  * we won't do I/O to bulk/interrupt endpoints here (which is how to change
 665  * halt or toggle).  toggle testing is impractical without support from hcds.
 666  *
 667  * this avoids failing devices linux would normally work with, by not testing
 668  * config/altsetting operations for devices that only support their defaults.
 669  * such devices rarely support those needless operations.
 670  *
 671  * NOTE that since this is a sanity test, it's not examining boundary cases
 672  * to see if usbcore, hcd, and device all behave right.  such testing would
 673  * involve varied read sizes and other operation sequences.
 674  */
 675 static int ch9_postconfig(struct usbtest_dev *dev)
 676 {
 677         struct usb_interface    *iface = dev->intf;
 678         struct usb_device       *udev = interface_to_usbdev(iface);
 679         int                     i, alt, retval;
 680
 681         /* [9.2.3] if there's more than one altsetting, we need to be able to
 682          * set and get each one.  mostly trusts the descriptors from usbcore.
 683          */
 684         for (i = 0; i < iface->num_altsetting; i++) {
 685
 686                 /* 9.2.3 constrains the range here */
 687                 alt = iface->altsetting[i].desc.bAlternateSetting;
 688                 if (alt < 0 || alt >= iface->num_altsetting) {
 689                         dev_err(&iface->dev,
 690                                         "invalid alt [%d].bAltSetting = %d\n",
 691                                         i, alt);
 692                 }
 693
 694                 /* [real world] get/set unimplemented if there's only one */
 695                 if (realworld && iface->num_altsetting == 1)
 696                         continue;
 697
 698                 /* [9.4.10] set_interface */
 699                 retval = set_altsetting(dev, alt);
 700                 if (retval) {
 701                         dev_err(&iface->dev, "can't set_interface = %d, %d\n",
 702                                         alt, retval);
 703                         return retval;
 704                 }
 705
 706                 /* [9.4.4] get_interface always works */
 707                 retval = get_altsetting(dev);
 708                 if (retval != alt) {
 709                         dev_err(&iface->dev, "get alt should be %d, was %d\n",
 710                                         alt, retval);
 711                         return (retval < 0) ? retval : -EDOM;
 712                 }
 713
 714         }
 715
 716         /* [real world] get_config unimplemented if there's only one */
 717         if (!realworld || udev->descriptor.bNumConfigurations != 1) {
 718                 int     expected = udev->actconfig->desc.bConfigurationValue;
 719
 720                 /* [9.4.2] get_configuration always works
 721                  * ... although some cheap devices (like one TI Hub I've got)
 722                  * won't return config descriptors except before set_config.
 723                  */
 724                 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 725                                 USB_REQ_GET_CONFIGURATION,
 726                                 USB_DIR_IN | USB_RECIP_DEVICE,
 727                                 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);
 728                 if (retval != 1 || dev->buf[0] != expected) {
 729                         dev_err(&iface->dev, "get config --> %d %d (1 %d)\n",
 730                                 retval, dev->buf[0], expected);
 731                         return (retval < 0) ? retval : -EDOM;
 732                 }
 733         }
 734
 735         /* there's always [9.4.3] a device descriptor [9.6.1] */
 736         retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0,
 737                         dev->buf, sizeof(udev->descriptor));
 738         if (retval != sizeof(udev->descriptor)) {
 739                 dev_err(&iface->dev, "dev descriptor --> %d\n", retval);
 740                 return (retval < 0) ? retval : -EDOM;
 741         }
 742
 743         /*
 744          * there's always [9.4.3] a bos device descriptor [9.6.2] in USB
 745          * 3.0 spec
 746          */
 747         if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0300) {
 748                 struct usb_bos_descriptor *bos = NULL;
 749                 struct usb_dev_cap_header *header = NULL;
 750                 unsigned total, num, length;
 751                 u8 *buf;
 752
 753                 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
 754                                 sizeof(*udev->bos->desc));
 755                 if (retval != sizeof(*udev->bos->desc)) {
 756                         dev_err(&iface->dev, "bos descriptor --> %d\n", retval);
 757                         return (retval < 0) ? retval : -EDOM;
 758                 }
 759
 760                 bos = (struct usb_bos_descriptor *)dev->buf;
 761                 total = le16_to_cpu(bos->wTotalLength);
 762                 num = bos->bNumDeviceCaps;
 763
 764                 if (total > TBUF_SIZE)
 765                         total = TBUF_SIZE;
 766
 767                 /*
 768                  * get generic device-level capability descriptors [9.6.2]
 769                  * in USB 3.0 spec
 770                  */
 771                 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
 772                                 total);
 773                 if (retval != total) {
 774                         dev_err(&iface->dev, "bos descriptor set --> %d\n",
 775                                         retval);
 776                         return (retval < 0) ? retval : -EDOM;
 777                 }
 778
 779                 length = sizeof(*udev->bos->desc);
 780                 buf = dev->buf;
 781                 for (i = 0; i < num; i++) {
 782                         buf += length;
 783                         if (buf + sizeof(struct usb_dev_cap_header) >
 784                                         dev->buf + total)
 785                                 break;
 786
 787                         header = (struct usb_dev_cap_header *)buf;
 788                         length = header->bLength;
 789
 790                         if (header->bDescriptorType !=
 791                                         USB_DT_DEVICE_CAPABILITY) {
 792                                 dev_warn(&udev->dev, "not device capability descriptor, skip\n");
 793                                 continue;
 794                         }
 795
 796                         switch (header->bDevCapabilityType) {
 797                         case USB_CAP_TYPE_EXT:
 798                                 if (buf + USB_DT_USB_EXT_CAP_SIZE >
 799                                                 dev->buf + total ||
 800                                                 !is_good_ext(dev, buf)) {
 801                                         dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n");
 802                                         return -EDOM;
 803                                 }
 804                                 break;
 805                         case USB_SS_CAP_TYPE:
 806                                 if (buf + USB_DT_USB_SS_CAP_SIZE >
 807                                                 dev->buf + total ||
 808                                                 !is_good_ss_cap(dev, buf)) {
 809                                         dev_err(&iface->dev, "bogus superspeed device capability descriptor\n");
 810                                         return -EDOM;
 811                                 }
 812                                 break;
 813                         default:
 814                                 break;
 815                         }
 816                 }
 817         }
 818
 819         /* there's always [9.4.3] at least one config descriptor [9.6.3] */
 820         for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
 821                 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i,
 822                                 dev->buf, TBUF_SIZE);
 823                 if (!is_good_config(dev, retval)) {
 824                         dev_err(&iface->dev,
 825                                         "config [%d] descriptor --> %d\n",
 826                                         i, retval);
 827                         return (retval < 0) ? retval : -EDOM;
 828                 }
 829
 830                 /* FIXME cross-checking udev->config[i] to make sure usbcore
 831                  * parsed it right (etc) would be good testing paranoia
 832                  */
 833         }
 834
 835         /* and sometimes [9.2.6.6] speed dependent descriptors */
 836         if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) {
 837                 struct usb_qualifier_descriptor *d = NULL;
 838
 839                 /* device qualifier [9.6.2] */
 840                 retval = usb_get_descriptor(udev,
 841                                 USB_DT_DEVICE_QUALIFIER, 0, dev->buf,
 842                                 sizeof(struct usb_qualifier_descriptor));
 843                 if (retval == -EPIPE) {
 844                         if (udev->speed == USB_SPEED_HIGH) {
 845                                 dev_err(&iface->dev,
 846                                                 "hs dev qualifier --> %d\n",
 847                                                 retval);
 848                                 return (retval < 0) ? retval : -EDOM;
 849                         }
 850                         /* usb2.0 but not high-speed capable; fine */
 851                 } else if (retval != sizeof(struct usb_qualifier_descriptor)) {
 852                         dev_err(&iface->dev, "dev qualifier --> %d\n", retval);
 853                         return (retval < 0) ? retval : -EDOM;
 854                 } else
 855                         d = (struct usb_qualifier_descriptor *) dev->buf;
 856
 857                 /* might not have [9.6.2] any other-speed configs [9.6.4] */
 858                 if (d) {
 859                         unsigned max = d->bNumConfigurations;
 860                         for (i = 0; i < max; i++) {
 861                                 retval = usb_get_descriptor(udev,
 862                                         USB_DT_OTHER_SPEED_CONFIG, i,
 863                                         dev->buf, TBUF_SIZE);
 864                                 if (!is_good_config(dev, retval)) {
 865                                         dev_err(&iface->dev,
 866                                                 "other speed config --> %d\n",
 867                                                 retval);
 868                                         return (retval < 0) ? retval : -EDOM;
 869                                 }
 870                         }
 871                 }
 872         }
 873         /* FIXME fetch strings from at least the device descriptor */
 874
 875         /* [9.4.5] get_status always works */
 876         retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf);
 877         if (retval) {
 878                 dev_err(&iface->dev, "get dev status --> %d\n", retval);
 879                 return retval;
 880         }
 881
 882         /* FIXME configuration.bmAttributes says if we could try to set/clear
 883          * the device's remote wakeup feature ... if we can, test that here
 884          */
 885
 886         retval = usb_get_status(udev, USB_RECIP_INTERFACE,
 887                         iface->altsetting[0].desc.bInterfaceNumber, dev->buf);
 888         if (retval) {
 889                 dev_err(&iface->dev, "get interface status --> %d\n", retval);
 890                 return retval;
 891         }
 892         /* FIXME get status for each endpoint in the interface */
 893
 894         return 0;
 895 }
 896
 897 /*-------------------------------------------------------------------------*/
 898
 899 /* use ch9 requests to test whether:
 900  *   (a) queues work for control, keeping N subtests queued and
 901  *       active (auto-resubmit) for M loops through the queue.
 902  *   (b) protocol stalls (control-only) will autorecover.
 903  *       it's not like bulk/intr; no halt clearing.
 904  *   (c) short control reads are reported and handled.
 905  *   (d) queues are always processed in-order
 906  */
 907
 908 struct ctrl_ctx {
 909         spinlock_t              lock;
 910         struct usbtest_dev      *dev;
 911         struct completion       complete;
 912         unsigned                count;
 913         unsigned                pending;
 914         int                     status;
 915         struct urb              **urb;
 916         struct usbtest_param    *param;
 917         int                     last;
 918 };
 919
 920 #define NUM_SUBCASES    15              /* how many test subcases here? */
 921
 922 struct subcase {
 923         struct usb_ctrlrequest  setup;
 924         int                     number;
 925         int                     expected;
 926 };
 927
 928 static void ctrl_complete(struct urb *urb)
 929 {
 930         struct ctrl_ctx         *ctx = urb->context;
 931         struct usb_ctrlrequest  *reqp;
 932         struct subcase          *subcase;
 933         int                     status = urb->status;
 934
 935         reqp = (struct usb_ctrlrequest *)urb->setup_packet;
 936         subcase = container_of(reqp, struct subcase, setup);
 937
 938         spin_lock(&ctx->lock);
 939         ctx->count--;
 940         ctx->pending--;
 941
 942         /* queue must transfer and complete in fifo order, unless
 943          * usb_unlink_urb() is used to unlink something not at the
 944          * physical queue head (not tested).
 945          */
 946         if (subcase->number > 0) {
 947                 if ((subcase->number - ctx->last) != 1) {
 948                         ERROR(ctx->dev,
 949                                 "subcase %d completed out of order, last %d\n",
 950                                 subcase->number, ctx->last);
 951                         status = -EDOM;
 952                         ctx->last = subcase->number;
 953                         goto error;
 954                 }
 955         }
 956         ctx->last = subcase->number;
 957
 958         /* succeed or fault in only one way? */
 959         if (status == subcase->expected)
 960                 status = 0;
 961
 962         /* async unlink for cleanup? */
 963         else if (status != -ECONNRESET) {
 964
 965                 /* some faults are allowed, not required */
 966                 if (subcase->expected > 0 && (
 967                           ((status == -subcase->expected        /* happened */
 968                            || status == 0))))                   /* didn't */
 969                         status = 0;
 970                 /* sometimes more than one fault is allowed */
 971                 else if (subcase->number == 12 && status == -EPIPE)
 972                         status = 0;
 973                 else
 974                         ERROR(ctx->dev, "subtest %d error, status %d\n",
 975                                         subcase->number, status);
 976         }
 977
 978         /* unexpected status codes mean errors; ideally, in hardware */
 979         if (status) {
 980 error:
 981                 if (ctx->status == 0) {
 982                         int             i;
 983
 984                         ctx->status = status;
 985                         ERROR(ctx->dev, "control queue %02x.%02x, err %d, "
 986                                         "%d left, subcase %d, len %d/%d\n",
 987                                         reqp->bRequestType, reqp->bRequest,
 988                                         status, ctx->count, subcase->number,
 989                                         urb->actual_length,
 990                                         urb->transfer_buffer_length);
 991
 992                         /* FIXME this "unlink everything" exit route should
 993                          * be a separate test case.
 994                          */
 995
 996                         /* unlink whatever's still pending */
 997                         for (i = 1; i < ctx->param->sglen; i++) {
 998                                 struct urb *u = ctx->urb[
 999                                                         (i + subcase->number)
1000                                                         % ctx->param->sglen];
1001
1002                                 if (u == urb || !u->dev)
1003                                         continue;
1004                                 spin_unlock(&ctx->lock);
1005                                 status = usb_unlink_urb(u);
1006                                 spin_lock(&ctx->lock);
1007                                 switch (status) {
1008                                 case -EINPROGRESS:
1009                                 case -EBUSY:
1010                                 case -EIDRM:
1011                                         continue;
1012                                 default:
1013                                         ERROR(ctx->dev, "urb unlink --> %d\n",
1014                                                         status);
1015                                 }
1016                         }
1017                         status = ctx->status;
1018                 }
1019         }
1020
1021         /* resubmit if we need to, else mark this as done */
1022         if ((status == 0) && (ctx->pending < ctx->count)) {
1023                 status = usb_submit_urb(urb, GFP_ATOMIC);
1024                 if (status != 0) {
1025                         ERROR(ctx->dev,
1026                                 "can't resubmit ctrl %02x.%02x, err %d\n",
1027                                 reqp->bRequestType, reqp->bRequest, status);
1028                         urb->dev = NULL;
1029                 } else
1030                         ctx->pending++;
1031         } else
1032                 urb->dev = NULL;
1033
1034         /* signal completion when nothing's queued */
1035         if (ctx->pending == 0)
1036                 complete(&ctx->complete);
1037         spin_unlock(&ctx->lock);
1038 }
1039
1040 static int
1041 test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param)
1042 {
1043         struct usb_device       *udev = testdev_to_usbdev(dev);
1044         struct urb              **urb;
1045         struct ctrl_ctx         context;
1046         int                     i;
1047
1048         if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen)
1049                 return -EOPNOTSUPP;
1050
1051         spin_lock_init(&context.lock);
1052         context.dev = dev;
1053         init_completion(&context.complete);
1054         context.count = param->sglen * param->iterations;
1055         context.pending = 0;
1056         context.status = -ENOMEM;
1057         context.param = param;
1058         context.last = -1;
1059
1060         /* allocate and init the urbs we'll queue.
1061          * as with bulk/intr sglists, sglen is the queue depth; it also
1062          * controls which subtests run (more tests than sglen) or rerun.
1063          */
1064         urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL);
1065         if (!urb)
1066                 return -ENOMEM;
1067         for (i = 0; i < param->sglen; i++) {
1068                 int                     pipe = usb_rcvctrlpipe(udev, 0);
1069                 unsigned                len;
1070                 struct urb              *u;
1071                 struct usb_ctrlrequest  req;
1072                 struct subcase          *reqp;
1073
1074                 /* sign of this variable means:
1075                  *  -: tested code must return this (negative) error code
1076                  *  +: tested code may return this (negative too) error code
1077                  */
1078                 int                     expected = 0;
1079
1080                 /* requests here are mostly expected to succeed on any
1081                  * device, but some are chosen to trigger protocol stalls
1082                  * or short reads.
1083                  */
1084                 memset(&req, 0, sizeof(req));
1085                 req.bRequest = USB_REQ_GET_DESCRIPTOR;
1086                 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1087
1088                 switch (i % NUM_SUBCASES) {
1089                 case 0:         /* get device descriptor */
1090                         req.wValue = cpu_to_le16(USB_DT_DEVICE << 8);
1091                         len = sizeof(struct usb_device_descriptor);
1092                         break;
1093                 case 1:         /* get first config descriptor (only) */
1094                         req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1095                         len = sizeof(struct usb_config_descriptor);
1096                         break;
1097                 case 2:         /* get altsetting (OFTEN STALLS) */
1098                         req.bRequest = USB_REQ_GET_INTERFACE;
1099                         req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1100                         /* index = 0 means first interface */
1101                         len = 1;
1102                         expected = EPIPE;
1103                         break;
1104                 case 3:         /* get interface status */
1105                         req.bRequest = USB_REQ_GET_STATUS;
1106                         req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1107                         /* interface 0 */
1108                         len = 2;
1109                         break;
1110                 case 4:         /* get device status */
1111                         req.bRequest = USB_REQ_GET_STATUS;
1112                         req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1113                         len = 2;
1114                         break;
1115                 case 5:         /* get device qualifier (MAY STALL) */
1116                         req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8);
1117                         len = sizeof(struct usb_qualifier_descriptor);
1118                         if (udev->speed != USB_SPEED_HIGH)
1119                                 expected = EPIPE;
1120                         break;
1121                 case 6:         /* get first config descriptor, plus interface */
1122                         req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1123                         len = sizeof(struct usb_config_descriptor);
1124                         len += sizeof(struct usb_interface_descriptor);
1125                         break;
1126                 case 7:         /* get interface descriptor (ALWAYS STALLS) */
1127                         req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8);
1128                         /* interface == 0 */
1129                         len = sizeof(struct usb_interface_descriptor);
1130                         expected = -EPIPE;
1131                         break;
1132                 /* NOTE: two consecutive stalls in the queue here.
1133                  *  that tests fault recovery a bit more aggressively. */
1134                 case 8:         /* clear endpoint halt (MAY STALL) */
1135                         req.bRequest = USB_REQ_CLEAR_FEATURE;
1136                         req.bRequestType = USB_RECIP_ENDPOINT;
1137                         /* wValue 0 == ep halt */
1138                         /* wIndex 0 == ep0 (shouldn't halt!) */
1139                         len = 0;
1140                         pipe = usb_sndctrlpipe(udev, 0);
1141                         expected = EPIPE;
1142                         break;
1143                 case 9:         /* get endpoint status */
1144                         req.bRequest = USB_REQ_GET_STATUS;
1145                         req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT;
1146                         /* endpoint 0 */
1147                         len = 2;
1148                         break;
1149                 case 10:        /* trigger short read (EREMOTEIO) */
1150                         req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1151                         len = 1024;
1152                         expected = -EREMOTEIO;
1153                         break;
1154                 /* NOTE: two consecutive _different_ faults in the queue. */
1155                 case 11:        /* get endpoint descriptor (ALWAYS STALLS) */
1156                         req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8);
1157                         /* endpoint == 0 */
1158                         len = sizeof(struct usb_interface_descriptor);
1159                         expected = EPIPE;
1160                         break;
1161                 /* NOTE: sometimes even a third fault in the queue! */
1162                 case 12:        /* get string 0 descriptor (MAY STALL) */
1163                         req.wValue = cpu_to_le16(USB_DT_STRING << 8);
1164                         /* string == 0, for language IDs */
1165                         len = sizeof(struct usb_interface_descriptor);
1166                         /* may succeed when > 4 languages */
1167                         expected = EREMOTEIO;   /* or EPIPE, if no strings */
1168                         break;
1169                 case 13:        /* short read, resembling case 10 */
1170                         req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1171                         /* last data packet "should" be DATA1, not DATA0 */
1172                         if (udev->speed == USB_SPEED_SUPER)
1173                                 len = 1024 - 512;
1174                         else
1175                                 len = 1024 - udev->descriptor.bMaxPacketSize0;
1176                         expected = -EREMOTEIO;
1177                         break;
1178                 case 14:        /* short read; try to fill the last packet */
1179                         req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0);
1180                         /* device descriptor size == 18 bytes */
1181                         len = udev->descriptor.bMaxPacketSize0;
1182                         if (udev->speed == USB_SPEED_SUPER)
1183                                 len = 512;
1184                         switch (len) {
1185                         case 8:
1186                                 len = 24;
1187                                 break;
1188                         case 16:
1189                                 len = 32;
1190                                 break;
1191                         }
1192                         expected = -EREMOTEIO;
1193                         break;
1194                 default:
1195                         ERROR(dev, "bogus number of ctrl queue testcases!\n");
1196                         context.status = -EINVAL;
1197                         goto cleanup;
1198                 }
1199                 req.wLength = cpu_to_le16(len);
1200                 urb[i] = u = simple_alloc_urb(udev, pipe, len);
1201                 if (!u)
1202                         goto cleanup;
1203
1204                 reqp = kmalloc(sizeof(*reqp), GFP_KERNEL);
1205                 if (!reqp)
1206                         goto cleanup;
1207                 reqp->setup = req;
1208                 reqp->number = i % NUM_SUBCASES;
1209                 reqp->expected = expected;
1210                 u->setup_packet = (char *) &reqp->setup;
1211
1212                 u->context = &context;
1213                 u->complete = ctrl_complete;
1214         }
1215
1216         /* queue the urbs */
1217         context.urb = urb;
1218         spin_lock_irq(&context.lock);
1219         for (i = 0; i < param->sglen; i++) {
1220                 context.status = usb_submit_urb(urb[i], GFP_ATOMIC);
1221                 if (context.status != 0) {
1222                         ERROR(dev, "can't submit urb[%d], status %d\n",
1223                                         i, context.status);
1224                         context.count = context.pending;
1225                         break;
1226                 }
1227                 context.pending++;
1228         }
1229         spin_unlock_irq(&context.lock);
1230
1231         /* FIXME  set timer and time out; provide a disconnect hook */
1232
1233         /* wait for the last one to complete */
1234         if (context.pending > 0)
1235                 wait_for_completion(&context.complete);
1236
1237 cleanup:
1238         for (i = 0; i < param->sglen; i++) {
1239                 if (!urb[i])
1240                         continue;
1241                 urb[i]->dev = udev;
1242                 kfree(urb[i]->setup_packet);
1243                 simple_free_urb(urb[i]);
1244         }
1245         kfree(urb);
1246         return context.status;
1247 }
1248 #undef NUM_SUBCASES
1249
1250
1251 /*-------------------------------------------------------------------------*/
1252
1253 static void unlink1_callback(struct urb *urb)
1254 {
1255         int     status = urb->status;
1256
1257         /* we "know" -EPIPE (stall) never happens */
1258         if (!status)
1259                 status = usb_submit_urb(urb, GFP_ATOMIC);
1260         if (status) {
1261                 urb->status = status;
1262                 complete(urb->context);
1263         }
1264 }
1265
1266 static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
1267 {
1268         struct urb              *urb;
1269         struct completion       completion;
1270         int                     retval = 0;
1271
1272         init_completion(&completion);
1273         urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size);
1274         if (!urb)
1275                 return -ENOMEM;
1276         urb->context = &completion;
1277         urb->complete = unlink1_callback;
1278
1279         /* keep the endpoint busy.  there are lots of hc/hcd-internal
1280          * states, and testing should get to all of them over time.
1281          *
1282          * FIXME want additional tests for when endpoint is STALLing
1283          * due to errors, or is just NAKing requests.
1284          */
1285         retval = usb_submit_urb(urb, GFP_KERNEL);
1286         if (retval != 0) {
1287                 dev_err(&dev->intf->dev, "submit fail %d\n", retval);
1288                 return retval;
1289         }
1290
1291         /* unlinking that should always work.  variable delay tests more
1292          * hcd states and code paths, even with little other system load.
1293          */
1294         msleep(jiffies % (2 * INTERRUPT_RATE));
1295         if (async) {
1296                 while (!completion_done(&completion)) {
1297                         retval = usb_unlink_urb(urb);
1298
1299                         switch (retval) {
1300                         case -EBUSY:
1301                         case -EIDRM:
1302                                 /* we can't unlink urbs while they're completing
1303                                  * or if they've completed, and we haven't
1304                                  * resubmitted. "normal" drivers would prevent
1305                                  * resubmission, but since we're testing unlink
1306                                  * paths, we can't.
1307                                  */
1308                                 ERROR(dev, "unlink retry\n");
1309                                 continue;
1310                         case 0:
1311                         case -EINPROGRESS:
1312                                 break;
1313
1314                         default:
1315                                 dev_err(&dev->intf->dev,
1316                                         "unlink fail %d\n", retval);
1317                                 return retval;
1318                         }
1319
1320                         break;
1321                 }
1322         } else
1323                 usb_kill_urb(urb);
1324
1325         wait_for_completion(&completion);
1326         retval = urb->status;
1327         simple_free_urb(urb);
1328
1329         if (async)
1330                 return (retval == -ECONNRESET) ? 0 : retval - 1000;
1331         else
1332                 return (retval == -ENOENT || retval == -EPERM) ?
1333                                 0 : retval - 2000;
1334 }
1335
1336 static int unlink_simple(struct usbtest_dev *dev, int pipe, int len)
1337 {
1338         int                     retval = 0;
1339
1340         /* test sync and async paths */
1341         retval = unlink1(dev, pipe, len, 1);
1342         if (!retval)
1343                 retval = unlink1(dev, pipe, len, 0);
1344         return retval;
1345 }
1346
1347 /*-------------------------------------------------------------------------*/
1348
1349 struct queued_ctx {
1350         struct completion       complete;
1351         atomic_t                pending;
1352         unsigned                num;
1353         int                     status;
1354         struct urb              **urbs;
1355 };
1356
1357 static void unlink_queued_callback(struct urb *urb)
1358 {
1359         int                     status = urb->status;
1360         struct queued_ctx       *ctx = urb->context;
1361
1362         if (ctx->status)
1363                 goto done;
1364         if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) {
1365                 if (status == -ECONNRESET)
1366                         goto done;
1367                 /* What error should we report if the URB completed normally? */
1368         }
1369         if (status != 0)
1370                 ctx->status = status;
1371
1372  done:
1373         if (atomic_dec_and_test(&ctx->pending))
1374                 complete(&ctx->complete);
1375 }
1376
1377 static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num,
1378                 unsigned size)
1379 {
1380         struct queued_ctx       ctx;
1381         struct usb_device       *udev = testdev_to_usbdev(dev);
1382         void                    *buf;
1383         dma_addr_t              buf_dma;
1384         int                     i;
1385         int                     retval = -ENOMEM;
1386
1387         init_completion(&ctx.complete);
1388         atomic_set(&ctx.pending, 1);    /* One more than the actual value */
1389         ctx.num = num;
1390         ctx.status = 0;
1391
1392         buf = usb_alloc_coherent(udev, size, GFP_KERNEL, &buf_dma);
1393         if (!buf)
1394                 return retval;
1395         memset(buf, 0, size);
1396
1397         /* Allocate and init the urbs we'll queue */
1398         ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL);
1399         if (!ctx.urbs)
1400                 goto free_buf;
1401         for (i = 0; i < num; i++) {
1402                 ctx.urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
1403                 if (!ctx.urbs[i])
1404                         goto free_urbs;
1405                 usb_fill_bulk_urb(ctx.urbs[i], udev, pipe, buf, size,
1406                                 unlink_queued_callback, &ctx);
1407                 ctx.urbs[i]->transfer_dma = buf_dma;
1408                 ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1409         }
1410
1411         /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */
1412         for (i = 0; i < num; i++) {
1413                 atomic_inc(&ctx.pending);
1414                 retval = usb_submit_urb(ctx.urbs[i], GFP_KERNEL);
1415                 if (retval != 0) {
1416                         dev_err(&dev->intf->dev, "submit urbs[%d] fail %d\n",
1417                                         i, retval);
1418                         atomic_dec(&ctx.pending);
1419                         ctx.status = retval;
1420                         break;
1421                 }
1422         }
1423         if (i == num) {
1424                 usb_unlink_urb(ctx.urbs[num - 4]);
1425                 usb_unlink_urb(ctx.urbs[num - 2]);
1426         } else {
1427                 while (--i >= 0)
1428                         usb_unlink_urb(ctx.urbs[i]);
1429         }
1430
1431         if (atomic_dec_and_test(&ctx.pending))          /* The extra count */
1432                 complete(&ctx.complete);
1433         wait_for_completion(&ctx.complete);
1434         retval = ctx.status;
1435
1436  free_urbs:
1437         for (i = 0; i < num; i++)
1438                 usb_free_urb(ctx.urbs[i]);
1439         kfree(ctx.urbs);
1440  free_buf:
1441         usb_free_coherent(udev, size, buf, buf_dma);
1442         return retval;
1443 }
1444
1445 /*-------------------------------------------------------------------------*/
1446
1447 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1448 {
1449         int     retval;
1450         u16     status;
1451
1452         /* shouldn't look or act halted */
1453         retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1454         if (retval < 0) {
1455                 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n",
1456                                 ep, retval);
1457                 return retval;
1458         }
1459         if (status != 0) {
1460                 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status);
1461                 return -EINVAL;
1462         }
1463         retval = simple_io(tdev, urb, 1, 0, 0, __func__);
1464         if (retval != 0)
1465                 return -EINVAL;
1466         return 0;
1467 }
1468
1469 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1470 {
1471         int     retval;
1472         u16     status;
1473
1474         /* should look and act halted */
1475         retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1476         if (retval < 0) {
1477                 ERROR(tdev, "ep %02x couldn't get halt status, %d\n",
1478                                 ep, retval);
1479                 return retval;
1480         }
1481         if (status != 1) {
1482                 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status);
1483                 return -EINVAL;
1484         }
1485         retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__);
1486         if (retval != -EPIPE)
1487                 return -EINVAL;
1488         retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted");
1489         if (retval != -EPIPE)
1490                 return -EINVAL;
1491         return 0;
1492 }
1493
1494 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb)
1495 {
1496         int     retval;
1497
1498         /* shouldn't look or act halted now */
1499         retval = verify_not_halted(tdev, ep, urb);
1500         if (retval < 0)
1501                 return retval;
1502
1503         /* set halt (protocol test only), verify it worked */
1504         retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0),
1505                         USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT,
1506                         USB_ENDPOINT_HALT, ep,
1507                         NULL, 0, USB_CTRL_SET_TIMEOUT);
1508         if (retval < 0) {
1509                 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval);
1510                 return retval;
1511         }
1512         retval = verify_halted(tdev, ep, urb);
1513         if (retval < 0)
1514                 return retval;
1515
1516         /* clear halt (tests API + protocol), verify it worked */
1517         retval = usb_clear_halt(urb->dev, urb->pipe);
1518         if (retval < 0) {
1519                 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval);
1520                 return retval;
1521         }
1522         retval = verify_not_halted(tdev, ep, urb);
1523         if (retval < 0)
1524                 return retval;
1525
1526         /* NOTE:  could also verify SET_INTERFACE clear halts ... */
1527
1528         return 0;
1529 }
1530
1531 static int halt_simple(struct usbtest_dev *dev)
1532 {
1533         int                     ep;
1534         int                     retval = 0;
1535         struct urb              *urb;
1536         struct usb_device       *udev = testdev_to_usbdev(dev);
1537
1538         if (udev->speed == USB_SPEED_SUPER)
1539                 urb = simple_alloc_urb(udev, 0, 1024);
1540         else
1541                 urb = simple_alloc_urb(udev, 0, 512);
1542         if (urb == NULL)
1543                 return -ENOMEM;
1544
1545         if (dev->in_pipe) {
1546                 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN;
1547                 urb->pipe = dev->in_pipe;
1548                 retval = test_halt(dev, ep, urb);
1549                 if (retval < 0)
1550                         goto done;
1551         }
1552
1553         if (dev->out_pipe) {
1554                 ep = usb_pipeendpoint(dev->out_pipe);
1555                 urb->pipe = dev->out_pipe;
1556                 retval = test_halt(dev, ep, urb);
1557         }
1558 done:
1559         simple_free_urb(urb);
1560         return retval;
1561 }
1562
1563 /*-------------------------------------------------------------------------*/
1564
1565 /* Control OUT tests use the vendor control requests from Intel's
1566  * USB 2.0 compliance test device:  write a buffer, read it back.
1567  *
1568  * Intel's spec only _requires_ that it work for one packet, which
1569  * is pretty weak.   Some HCDs place limits here; most devices will
1570  * need to be able to handle more than one OUT data packet.  We'll
1571  * try whatever we're told to try.
1572  */
1573 static int ctrl_out(struct usbtest_dev *dev,
1574                 unsigned count, unsigned length, unsigned vary, unsigned offset)
1575 {
1576         unsigned                i, j, len;
1577         int                     retval;
1578         u8                      *buf;
1579         char                    *what = "?";
1580         struct usb_device       *udev;
1581
1582         if (length < 1 || length > 0xffff || vary >= length)
1583                 return -EINVAL;
1584
1585         buf = kmalloc(length + offset, GFP_KERNEL);
1586         if (!buf)
1587                 return -ENOMEM;
1588
1589         buf += offset;
1590         udev = testdev_to_usbdev(dev);
1591         len = length;
1592         retval = 0;
1593
1594         /* NOTE:  hardware might well act differently if we pushed it
1595          * with lots back-to-back queued requests.
1596          */
1597         for (i = 0; i < count; i++) {
1598                 /* write patterned data */
1599                 for (j = 0; j < len; j++)
1600                         buf[j] = i + j;
1601                 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1602                                 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR,
1603                                 0, 0, buf, len, USB_CTRL_SET_TIMEOUT);
1604                 if (retval != len) {
1605                         what = "write";
1606                         if (retval >= 0) {
1607                                 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n",
1608                                                 retval, len);
1609                                 retval = -EBADMSG;
1610                         }
1611                         break;
1612                 }
1613
1614                 /* read it back -- assuming nothing intervened!!  */
1615                 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
1616                                 0x5c, USB_DIR_IN|USB_TYPE_VENDOR,
1617                                 0, 0, buf, len, USB_CTRL_GET_TIMEOUT);
1618                 if (retval != len) {
1619                         what = "read";
1620                         if (retval >= 0) {
1621                                 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n",
1622                                                 retval, len);
1623                                 retval = -EBADMSG;
1624                         }
1625                         break;
1626                 }
1627
1628                 /* fail if we can't verify */
1629                 for (j = 0; j < len; j++) {
1630                         if (buf[j] != (u8) (i + j)) {
1631                                 ERROR(dev, "ctrl_out, byte %d is %d not %d\n",
1632                                         j, buf[j], (u8) i + j);
1633                                 retval = -EBADMSG;
1634                                 break;
1635                         }
1636                 }
1637                 if (retval < 0) {
1638                         what = "verify";
1639                         break;
1640                 }
1641
1642                 len += vary;
1643
1644                 /* [real world] the "zero bytes IN" case isn't really used.
1645                  * hardware can easily trip up in this weird case, since its
1646                  * status stage is IN, not OUT like other ep0in transfers.
1647                  */
1648                 if (len > length)
1649                         len = realworld ? 1 : 0;
1650         }
1651
1652         if (retval < 0)
1653                 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n",
1654                         what, retval, i);
1655
1656         kfree(buf - offset);
1657         return retval;
1658 }
1659
1660 /*-------------------------------------------------------------------------*/
1661
1662 /* ISO tests ... mimics common usage
1663  *  - buffer length is split into N packets (mostly maxpacket sized)
1664  *  - multi-buffers according to sglen
1665  */
1666
1667 struct iso_context {
1668         unsigned                count;
1669         unsigned                pending;
1670         spinlock_t              lock;
1671         struct completion       done;
1672         int                     submit_error;
1673         unsigned long           errors;
1674         unsigned long           packet_count;
1675         struct usbtest_dev      *dev;
1676 };
1677
1678 static void iso_callback(struct urb *urb)
1679 {
1680         struct iso_context      *ctx = urb->context;
1681
1682         spin_lock(&ctx->lock);
1683         ctx->count--;
1684
1685         ctx->packet_count += urb->number_of_packets;
1686         if (urb->error_count > 0)
1687                 ctx->errors += urb->error_count;
1688         else if (urb->status != 0)
1689                 ctx->errors += urb->number_of_packets;
1690         else if (urb->actual_length != urb->transfer_buffer_length)
1691                 ctx->errors++;
1692         else if (check_guard_bytes(ctx->dev, urb) != 0)
1693                 ctx->errors++;
1694
1695         if (urb->status == 0 && ctx->count > (ctx->pending - 1)
1696                         && !ctx->submit_error) {
1697                 int status = usb_submit_urb(urb, GFP_ATOMIC);
1698                 switch (status) {
1699                 case 0:
1700                         goto done;
1701                 default:
1702                         dev_err(&ctx->dev->intf->dev,
1703                                         "iso resubmit err %d\n",
1704                                         status);
1705                         /* FALLTHROUGH */
1706                 case -ENODEV:                   /* disconnected */
1707                 case -ESHUTDOWN:                /* endpoint disabled */
1708                         ctx->submit_error = 1;
1709                         break;
1710                 }
1711         }
1712
1713         ctx->pending--;
1714         if (ctx->pending == 0) {
1715                 if (ctx->errors)
1716                         dev_err(&ctx->dev->intf->dev,
1717                                 "iso test, %lu errors out of %lu\n",
1718                                 ctx->errors, ctx->packet_count);
1719                 complete(&ctx->done);
1720         }
1721 done:
1722         spin_unlock(&ctx->lock);
1723 }
1724
1725 static struct urb *iso_alloc_urb(
1726         struct usb_device       *udev,
1727         int                     pipe,
1728         struct usb_endpoint_descriptor  *desc,
1729         long                    bytes,
1730         unsigned offset
1731 )
1732 {
1733         struct urb              *urb;
1734         unsigned                i, maxp, packets;
1735
1736         if (bytes < 0 || !desc)
1737                 return NULL;
1738         maxp = 0x7ff & usb_endpoint_maxp(desc);
1739         maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11));
1740         packets = DIV_ROUND_UP(bytes, maxp);
1741
1742         urb = usb_alloc_urb(packets, GFP_KERNEL);
1743         if (!urb)
1744                 return urb;
1745         urb->dev = udev;
1746         urb->pipe = pipe;
1747
1748         urb->number_of_packets = packets;
1749         urb->transfer_buffer_length = bytes;
1750         urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
1751                                                         GFP_KERNEL,
1752                                                         &urb->transfer_dma);
1753         if (!urb->transfer_buffer) {
1754                 usb_free_urb(urb);
1755                 return NULL;
1756         }
1757         if (offset) {
1758                 memset(urb->transfer_buffer, GUARD_BYTE, offset);
1759                 urb->transfer_buffer += offset;
1760                 urb->transfer_dma += offset;
1761         }
1762         /* For inbound transfers use guard byte so that test fails if
1763                 data not correctly copied */
1764         memset(urb->transfer_buffer,
1765                         usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
1766                         bytes);
1767
1768         for (i = 0; i < packets; i++) {
1769                 /* here, only the last packet will be short */
1770                 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp);
1771                 bytes -= urb->iso_frame_desc[i].length;
1772
1773                 urb->iso_frame_desc[i].offset = maxp * i;
1774         }
1775
1776         urb->complete = iso_callback;
1777         /* urb->context = SET BY CALLER */
1778         urb->interval = 1 << (desc->bInterval - 1);
1779         urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1780         return urb;
1781 }
1782
1783 static int
1784 test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param,
1785                 int pipe, struct usb_endpoint_descriptor *desc, unsigned offset)
1786 {
1787         struct iso_context      context;
1788         struct usb_device       *udev;
1789         unsigned                i;
1790         unsigned long           packets = 0;
1791         int                     status = 0;
1792         struct urb              *urbs[10];      /* FIXME no limit */
1793
1794         if (param->sglen > 10)
1795                 return -EDOM;
1796
1797         memset(&context, 0, sizeof(context));
1798         context.count = param->iterations * param->sglen;
1799         context.dev = dev;
1800         init_completion(&context.done);
1801         spin_lock_init(&context.lock);
1802
1803         memset(urbs, 0, sizeof(urbs));
1804         udev = testdev_to_usbdev(dev);
1805         dev_info(&dev->intf->dev,
1806                 "... iso period %d %sframes, wMaxPacket %04x\n",
1807                 1 << (desc->bInterval - 1),
1808                 (udev->speed == USB_SPEED_HIGH) ? "micro" : "",
1809                 usb_endpoint_maxp(desc));
1810
1811         for (i = 0; i < param->sglen; i++) {
1812                 urbs[i] = iso_alloc_urb(udev, pipe, desc,
1813                                         param->length, offset);
1814                 if (!urbs[i]) {
1815                         status = -ENOMEM;
1816                         goto fail;
1817                 }
1818                 packets += urbs[i]->number_of_packets;
1819                 urbs[i]->context = &context;
1820         }
1821         packets *= param->iterations;
1822         dev_info(&dev->intf->dev,
1823                 "... total %lu msec (%lu packets)\n",
1824                 (packets * (1 << (desc->bInterval - 1)))
1825                         / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1),
1826                 packets);
1827
1828         spin_lock_irq(&context.lock);
1829         for (i = 0; i < param->sglen; i++) {
1830                 ++context.pending;
1831                 status = usb_submit_urb(urbs[i], GFP_ATOMIC);
1832                 if (status < 0) {
1833                         ERROR(dev, "submit iso[%d], error %d\n", i, status);
1834                         if (i == 0) {
1835                                 spin_unlock_irq(&context.lock);
1836                                 goto fail;
1837                         }
1838
1839                         simple_free_urb(urbs[i]);
1840                         urbs[i] = NULL;
1841                         context.pending--;
1842                         context.submit_error = 1;
1843                         break;
1844                 }
1845         }
1846         spin_unlock_irq(&context.lock);
1847
1848         wait_for_completion(&context.done);
1849
1850         for (i = 0; i < param->sglen; i++) {
1851                 if (urbs[i])
1852                         simple_free_urb(urbs[i]);
1853         }
1854         /*
1855          * Isochronous transfers are expected to fail sometimes.  As an
1856          * arbitrary limit, we will report an error if any submissions
1857          * fail or if the transfer failure rate is > 10%.
1858          */
1859         if (status != 0)
1860                 ;
1861         else if (context.submit_error)
1862                 status = -EACCES;
1863         else if (context.errors > context.packet_count / 10)
1864                 status = -EIO;
1865         return status;
1866
1867 fail:
1868         for (i = 0; i < param->sglen; i++) {
1869                 if (urbs[i])
1870                         simple_free_urb(urbs[i]);
1871         }
1872         return status;
1873 }
1874
1875 static int test_unaligned_bulk(
1876         struct usbtest_dev *tdev,
1877         int pipe,
1878         unsigned length,
1879         int iterations,
1880         unsigned transfer_flags,
1881         const char *label)
1882 {
1883         int retval;
1884         struct urb *urb = usbtest_alloc_urb(
1885                 testdev_to_usbdev(tdev), pipe, length, transfer_flags, 1);
1886
1887         if (!urb)
1888                 return -ENOMEM;
1889
1890         retval = simple_io(tdev, urb, iterations, 0, 0, label);
1891         simple_free_urb(urb);
1892         return retval;
1893 }
1894
1895 /*-------------------------------------------------------------------------*/
1896
1897 /* We only have this one interface to user space, through usbfs.
1898  * User mode code can scan usbfs to find N different devices (maybe on
1899  * different busses) to use when testing, and allocate one thread per
1900  * test.  So discovery is simplified, and we have no device naming issues.
1901  *
1902  * Don't use these only as stress/load tests.  Use them along with with
1903  * other USB bus activity:  plugging, unplugging, mousing, mp3 playback,
1904  * video capture, and so on.  Run different tests at different times, in
1905  * different sequences.  Nothing here should interact with other devices,
1906  * except indirectly by consuming USB bandwidth and CPU resources for test
1907  * threads and request completion.  But the only way to know that for sure
1908  * is to test when HC queues are in use by many devices.
1909  *
1910  * WARNING:  Because usbfs grabs udev->dev.sem before calling this ioctl(),
1911  * it locks out usbcore in certain code paths.  Notably, if you disconnect
1912  * the device-under-test, khubd will wait block forever waiting for the
1913  * ioctl to complete ... so that usb_disconnect() can abort the pending
1914  * urbs and then call usbtest_disconnect().  To abort a test, you're best
1915  * off just killing the userspace task and waiting for it to exit.
1916  */
1917
1918 static int
1919 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
1920 {
1921         struct usbtest_dev      *dev = usb_get_intfdata(intf);
1922         struct usb_device       *udev = testdev_to_usbdev(dev);
1923         struct usbtest_param    *param = buf;
1924         int                     retval = -EOPNOTSUPP;
1925         struct urb              *urb;
1926         struct scatterlist      *sg;
1927         struct usb_sg_request   req;
1928         struct timeval          start;
1929         unsigned                i;
1930
1931         /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */
1932
1933         pattern = mod_pattern;
1934
1935         if (code != USBTEST_REQUEST)
1936                 return -EOPNOTSUPP;
1937
1938         if (param->iterations <= 0)
1939                 return -EINVAL;
1940
1941         if (mutex_lock_interruptible(&dev->lock))
1942                 return -ERESTARTSYS;
1943
1944         /* FIXME: What if a system sleep starts while a test is running? */
1945
1946         /* some devices, like ez-usb default devices, need a non-default
1947          * altsetting to have any active endpoints.  some tests change
1948          * altsettings; force a default so most tests don't need to check.
1949          */
1950         if (dev->info->alt >= 0) {
1951                 int     res;
1952
1953                 if (intf->altsetting->desc.bInterfaceNumber) {
1954                         mutex_unlock(&dev->lock);
1955                         return -ENODEV;
1956                 }
1957                 res = set_altsetting(dev, dev->info->alt);
1958                 if (res) {
1959                         dev_err(&intf->dev,
1960                                         "set altsetting to %d failed, %d\n",
1961                                         dev->info->alt, res);
1962                         mutex_unlock(&dev->lock);
1963                         return res;
1964                 }
1965         }
1966
1967         /*
1968          * Just a bunch of test cases that every HCD is expected to handle.
1969          *
1970          * Some may need specific firmware, though it'd be good to have
1971          * one firmware image to handle all the test cases.
1972          *
1973          * FIXME add more tests!  cancel requests, verify the data, control
1974          * queueing, concurrent read+write threads, and so on.
1975          */
1976         do_gettimeofday(&start);
1977         switch (param->test_num) {
1978
1979         case 0:
1980                 dev_info(&intf->dev, "TEST 0:  NOP\n");
1981                 retval = 0;
1982                 break;
1983
1984         /* Simple non-queued bulk I/O tests */
1985         case 1:
1986                 if (dev->out_pipe == 0)
1987                         break;
1988                 dev_info(&intf->dev,
1989                                 "TEST 1:  write %d bytes %u times\n",
1990                                 param->length, param->iterations);
1991                 urb = simple_alloc_urb(udev, dev->out_pipe, param->length);
1992                 if (!urb) {
1993                         retval = -ENOMEM;
1994                         break;
1995                 }
1996                 /* FIRMWARE:  bulk sink (maybe accepts short writes) */
1997                 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1");
1998                 simple_free_urb(urb);
1999                 break;
2000         case 2:
2001                 if (dev->in_pipe == 0)
2002                         break;
2003                 dev_info(&intf->dev,
2004                                 "TEST 2:  read %d bytes %u times\n",
2005                                 param->length, param->iterations);
2006                 urb = simple_alloc_urb(udev, dev->in_pipe, param->length);
2007                 if (!urb) {
2008                         retval = -ENOMEM;
2009                         break;
2010                 }
2011                 /* FIRMWARE:  bulk source (maybe generates short writes) */
2012                 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2");
2013                 simple_free_urb(urb);
2014                 break;
2015         case 3:
2016                 if (dev->out_pipe == 0 || param->vary == 0)
2017                         break;
2018                 dev_info(&intf->dev,
2019                                 "TEST 3:  write/%d 0..%d bytes %u times\n",
2020                                 param->vary, param->length, param->iterations);
2021                 urb = simple_alloc_urb(udev, dev->out_pipe, param->length);
2022                 if (!urb) {
2023                         retval = -ENOMEM;
2024                         break;
2025                 }
2026                 /* FIRMWARE:  bulk sink (maybe accepts short writes) */
2027                 retval = simple_io(dev, urb, param->iterations, param->vary,
2028                                         0, "test3");
2029                 simple_free_urb(urb);
2030                 break;
2031         case 4:
2032                 if (dev->in_pipe == 0 || param->vary == 0)
2033                         break;
2034                 dev_info(&intf->dev,
2035                                 "TEST 4:  read/%d 0..%d bytes %u times\n",
2036                                 param->vary, param->length, param->iterations);
2037                 urb = simple_alloc_urb(udev, dev->in_pipe, param->length);
2038                 if (!urb) {
2039                         retval = -ENOMEM;
2040                         break;
2041                 }
2042                 /* FIRMWARE:  bulk source (maybe generates short writes) */
2043                 retval = simple_io(dev, urb, param->iterations, param->vary,
2044                                         0, "test4");
2045                 simple_free_urb(urb);
2046                 break;
2047
2048         /* Queued bulk I/O tests */
2049         case 5:
2050                 if (dev->out_pipe == 0 || param->sglen == 0)
2051                         break;
2052                 dev_info(&intf->dev,
2053                         "TEST 5:  write %d sglists %d entries of %d bytes\n",
2054                                 param->iterations,
2055                                 param->sglen, param->length);
2056                 sg = alloc_sglist(param->sglen, param->length, 0);
2057                 if (!sg) {
2058                         retval = -ENOMEM;
2059                         break;
2060                 }
2061                 /* FIRMWARE:  bulk sink (maybe accepts short writes) */
2062                 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2063                                 &req, sg, param->sglen);
2064                 free_sglist(sg, param->sglen);
2065                 break;
2066
2067         case 6:
2068                 if (dev->in_pipe == 0 || param->sglen == 0)
2069                         break;
2070                 dev_info(&intf->dev,
2071                         "TEST 6:  read %d sglists %d entries of %d bytes\n",
2072                                 param->iterations,
2073                                 param->sglen, param->length);
2074                 sg = alloc_sglist(param->sglen, param->length, 0);
2075                 if (!sg) {
2076                         retval = -ENOMEM;
2077                         break;
2078                 }
2079                 /* FIRMWARE:  bulk source (maybe generates short writes) */
2080                 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2081                                 &req, sg, param->sglen);
2082                 free_sglist(sg, param->sglen);
2083                 break;
2084         case 7:
2085                 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0)
2086                         break;
2087                 dev_info(&intf->dev,
2088                         "TEST 7:  write/%d %d sglists %d entries 0..%d bytes\n",
2089                                 param->vary, param->iterations,
2090                                 param->sglen, param->length);
2091                 sg = alloc_sglist(param->sglen, param->length, param->vary);
2092                 if (!sg) {
2093                         retval = -ENOMEM;
2094                         break;
2095                 }
2096                 /* FIRMWARE:  bulk sink (maybe accepts short writes) */
2097                 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2098                                 &req, sg, param->sglen);
2099                 free_sglist(sg, param->sglen);
2100                 break;
2101         case 8:
2102                 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0)
2103                         break;
2104                 dev_info(&intf->dev,
2105                         "TEST 8:  read/%d %d sglists %d entries 0..%d bytes\n",
2106                                 param->vary, param->iterations,
2107                                 param->sglen, param->length);
2108                 sg = alloc_sglist(param->sglen, param->length, param->vary);
2109                 if (!sg) {
2110                         retval = -ENOMEM;
2111                         break;
2112                 }
2113                 /* FIRMWARE:  bulk source (maybe generates short writes) */
2114                 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2115                                 &req, sg, param->sglen);
2116                 free_sglist(sg, param->sglen);
2117                 break;
2118
2119         /* non-queued sanity tests for control (chapter 9 subset) */
2120         case 9:
2121                 retval = 0;
2122                 dev_info(&intf->dev,
2123                         "TEST 9:  ch9 (subset) control tests, %d times\n",
2124                                 param->iterations);
2125                 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2126                         retval = ch9_postconfig(dev);
2127                 if (retval)
2128                         dev_err(&intf->dev, "ch9 subset failed, "
2129                                         "iterations left %d\n", i);
2130                 break;
2131
2132         /* queued control messaging */
2133         case 10:
2134                 retval = 0;
2135                 dev_info(&intf->dev,
2136                                 "TEST 10:  queue %d control calls, %d times\n",
2137                                 param->sglen,
2138                                 param->iterations);
2139                 retval = test_ctrl_queue(dev, param);
2140                 break;
2141
2142         /* simple non-queued unlinks (ring with one urb) */
2143         case 11:
2144                 if (dev->in_pipe == 0 || !param->length)
2145                         break;
2146                 retval = 0;
2147                 dev_info(&intf->dev, "TEST 11:  unlink %d reads of %d\n",
2148                                 param->iterations, param->length);
2149                 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2150                         retval = unlink_simple(dev, dev->in_pipe,
2151                                                 param->length);
2152                 if (retval)
2153                         dev_err(&intf->dev, "unlink reads failed %d, "
2154                                 "iterations left %d\n", retval, i);
2155                 break;
2156         case 12:
2157                 if (dev->out_pipe == 0 || !param->length)
2158                         break;
2159                 retval = 0;
2160                 dev_info(&intf->dev, "TEST 12:  unlink %d writes of %d\n",
2161                                 param->iterations, param->length);
2162                 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2163                         retval = unlink_simple(dev, dev->out_pipe,
2164                                                 param->length);
2165                 if (retval)
2166                         dev_err(&intf->dev, "unlink writes failed %d, "
2167                                 "iterations left %d\n", retval, i);
2168                 break;
2169
2170         /* ep halt tests */
2171         case 13:
2172                 if (dev->out_pipe == 0 && dev->in_pipe == 0)
2173                         break;
2174                 retval = 0;
2175                 dev_info(&intf->dev, "TEST 13:  set/clear %d halts\n",
2176                                 param->iterations);
2177                 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2178                         retval = halt_simple(dev);
2179
2180                 if (retval)
2181                         ERROR(dev, "halts failed, iterations left %d\n", i);
2182                 break;
2183
2184         /* control write tests */
2185         case 14:
2186                 if (!dev->info->ctrl_out)
2187                         break;
2188                 dev_info(&intf->dev, "TEST 14:  %d ep0out, %d..%d vary %d\n",
2189                                 param->iterations,
2190                                 realworld ? 1 : 0, param->length,
2191                                 param->vary);
2192                 retval = ctrl_out(dev, param->iterations,
2193                                 param->length, param->vary, 0);
2194                 break;
2195
2196         /* iso write tests */
2197         case 15:
2198                 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2199                         break;
2200                 dev_info(&intf->dev,
2201                         "TEST 15:  write %d iso, %d entries of %d bytes\n",
2202                                 param->iterations,
2203                                 param->sglen, param->length);
2204                 /* FIRMWARE:  iso sink */
2205                 retval = test_iso_queue(dev, param,
2206                                 dev->out_iso_pipe, dev->iso_out, 0);
2207                 break;
2208
2209         /* iso read tests */
2210         case 16:
2211                 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2212                         break;
2213                 dev_info(&intf->dev,
2214                         "TEST 16:  read %d iso, %d entries of %d bytes\n",
2215                                 param->iterations,
2216                                 param->sglen, param->length);
2217                 /* FIRMWARE:  iso source */
2218                 retval = test_iso_queue(dev, param,
2219                                 dev->in_iso_pipe, dev->iso_in, 0);
2220                 break;
2221
2222         /* FIXME scatterlist cancel (needs helper thread) */
2223
2224         /* Tests for bulk I/O using DMA mapping by core and odd address */
2225         case 17:
2226                 if (dev->out_pipe == 0)
2227                         break;
2228                 dev_info(&intf->dev,
2229                         "TEST 17:  write odd addr %d bytes %u times core map\n",
2230                         param->length, param->iterations);
2231
2232                 retval = test_unaligned_bulk(
2233                                 dev, dev->out_pipe,
2234                                 param->length, param->iterations,
2235                                 0, "test17");
2236                 break;
2237
2238         case 18:
2239                 if (dev->in_pipe == 0)
2240                         break;
2241                 dev_info(&intf->dev,
2242                         "TEST 18:  read odd addr %d bytes %u times core map\n",
2243                         param->length, param->iterations);
2244
2245                 retval = test_unaligned_bulk(
2246                                 dev, dev->in_pipe,
2247                                 param->length, param->iterations,
2248                                 0, "test18");
2249                 break;
2250
2251         /* Tests for bulk I/O using premapped coherent buffer and odd address */
2252         case 19:
2253                 if (dev->out_pipe == 0)
2254                         break;
2255                 dev_info(&intf->dev,
2256                         "TEST 19:  write odd addr %d bytes %u times premapped\n",
2257                         param->length, param->iterations);
2258
2259                 retval = test_unaligned_bulk(
2260                                 dev, dev->out_pipe,
2261                                 param->length, param->iterations,
2262                                 URB_NO_TRANSFER_DMA_MAP, "test19");
2263                 break;
2264
2265         case 20:
2266                 if (dev->in_pipe == 0)
2267                         break;
2268                 dev_info(&intf->dev,
2269                         "TEST 20:  read odd addr %d bytes %u times premapped\n",
2270                         param->length, param->iterations);
2271
2272                 retval = test_unaligned_bulk(
2273                                 dev, dev->in_pipe,
2274                                 param->length, param->iterations,
2275                                 URB_NO_TRANSFER_DMA_MAP, "test20");
2276                 break;
2277
2278         /* control write tests with unaligned buffer */
2279         case 21:
2280                 if (!dev->info->ctrl_out)
2281                         break;
2282                 dev_info(&intf->dev,
2283                                 "TEST 21:  %d ep0out odd addr, %d..%d vary %d\n",
2284                                 param->iterations,
2285                                 realworld ? 1 : 0, param->length,
2286                                 param->vary);
2287                 retval = ctrl_out(dev, param->iterations,
2288                                 param->length, param->vary, 1);
2289                 break;
2290
2291         /* unaligned iso tests */
2292         case 22:
2293                 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2294                         break;
2295                 dev_info(&intf->dev,
2296                         "TEST 22:  write %d iso odd, %d entries of %d bytes\n",
2297                                 param->iterations,
2298                                 param->sglen, param->length);
2299                 retval = test_iso_queue(dev, param,
2300                                 dev->out_iso_pipe, dev->iso_out, 1);
2301                 break;
2302
2303         case 23:
2304                 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2305                         break;
2306                 dev_info(&intf->dev,
2307                         "TEST 23:  read %d iso odd, %d entries of %d bytes\n",
2308                                 param->iterations,
2309                                 param->sglen, param->length);
2310                 retval = test_iso_queue(dev, param,
2311                                 dev->in_iso_pipe, dev->iso_in, 1);
2312                 break;
2313
2314         /* unlink URBs from a bulk-OUT queue */
2315         case 24:
2316                 if (dev->out_pipe == 0 || !param->length || param->sglen < 4)
2317                         break;
2318                 retval = 0;
2319                 dev_info(&intf->dev, "TEST 24:  unlink from %d queues of "
2320                                 "%d %d-byte writes\n",
2321                                 param->iterations, param->sglen, param->length);
2322                 for (i = param->iterations; retval == 0 && i > 0; --i) {
2323                         retval = unlink_queued(dev, dev->out_pipe,
2324                                                 param->sglen, param->length);
2325                         if (retval) {
2326                                 dev_err(&intf->dev,
2327                                         "unlink queued writes failed %d, "
2328                                         "iterations left %d\n", retval, i);
2329                                 break;
2330                         }
2331                 }
2332                 break;
2333
2334         }
2335         do_gettimeofday(&param->duration);
2336         param->duration.tv_sec -= start.tv_sec;
2337         param->duration.tv_usec -= start.tv_usec;
2338         if (param->duration.tv_usec < 0) {
2339                 param->duration.tv_usec += 1000 * 1000;
2340                 param->duration.tv_sec -= 1;
2341         }
2342         mutex_unlock(&dev->lock);
2343         return retval;
2344 }
2345
2346 /*-------------------------------------------------------------------------*/
2347
2348 static unsigned force_interrupt;
2349 module_param(force_interrupt, uint, 0);
2350 MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt");
2351
2352 #ifdef  GENERIC
2353 static unsigned short vendor;
2354 module_param(vendor, ushort, 0);
2355 MODULE_PARM_DESC(vendor, "vendor code (from usb-if)");
2356
2357 static unsigned short product;
2358 module_param(product, ushort, 0);
2359 MODULE_PARM_DESC(product, "product code (from vendor)");
2360 #endif
2361
2362 static int
2363 usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
2364 {
2365         struct usb_device       *udev;
2366         struct usbtest_dev      *dev;
2367         struct usbtest_info     *info;
2368         char                    *rtest, *wtest;
2369         char                    *irtest, *iwtest;
2370
2371         udev = interface_to_usbdev(intf);
2372
2373 #ifdef  GENERIC
2374         /* specify devices by module parameters? */
2375         if (id->match_flags == 0) {
2376                 /* vendor match required, product match optional */
2377                 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor)
2378                         return -ENODEV;
2379                 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product)
2380                         return -ENODEV;
2381                 dev_info(&intf->dev, "matched module params, "
2382                                         "vend=0x%04x prod=0x%04x\n",
2383                                 le16_to_cpu(udev->descriptor.idVendor),
2384                                 le16_to_cpu(udev->descriptor.idProduct));
2385         }
2386 #endif
2387
2388         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2389         if (!dev)
2390                 return -ENOMEM;
2391         info = (struct usbtest_info *) id->driver_info;
2392         dev->info = info;
2393         mutex_init(&dev->lock);
2394
2395         dev->intf = intf;
2396
2397         /* cacheline-aligned scratch for i/o */
2398         dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL);
2399         if (dev->buf == NULL) {
2400                 kfree(dev);
2401                 return -ENOMEM;
2402         }
2403
2404         /* NOTE this doesn't yet test the handful of difference that are
2405          * visible with high speed interrupts:  bigger maxpacket (1K) and
2406          * "high bandwidth" modes (up to 3 packets/uframe).
2407          */
2408         rtest = wtest = "";
2409         irtest = iwtest = "";
2410         if (force_interrupt || udev->speed == USB_SPEED_LOW) {
2411                 if (info->ep_in) {
2412                         dev->in_pipe = usb_rcvintpipe(udev, info->ep_in);
2413                         rtest = " intr-in";
2414                 }
2415                 if (info->ep_out) {
2416                         dev->out_pipe = usb_sndintpipe(udev, info->ep_out);
2417                         wtest = " intr-out";
2418                 }
2419         } else {
2420                 if (override_alt >= 0 || info->autoconf) {
2421                         int status;
2422
2423                         status = get_endpoints(dev, intf);
2424                         if (status < 0) {
2425                                 WARNING(dev, "couldn't get endpoints, %d\n",
2426                                                 status);
2427                                 kfree(dev->buf);
2428                                 kfree(dev);
2429                                 return status;
2430                         }
2431                         /* may find bulk or ISO pipes */
2432                 } else {
2433                         if (info->ep_in)
2434                                 dev->in_pipe = usb_rcvbulkpipe(udev,
2435                                                         info->ep_in);
2436                         if (info->ep_out)
2437                                 dev->out_pipe = usb_sndbulkpipe(udev,
2438                                                         info->ep_out);
2439                 }
2440                 if (dev->in_pipe)
2441                         rtest = " bulk-in";
2442                 if (dev->out_pipe)
2443                         wtest = " bulk-out";
2444                 if (dev->in_iso_pipe)
2445                         irtest = " iso-in";
2446                 if (dev->out_iso_pipe)
2447                         iwtest = " iso-out";
2448         }
2449
2450         usb_set_intfdata(intf, dev);
2451         dev_info(&intf->dev, "%s\n", info->name);
2452         dev_info(&intf->dev, "%s {control%s%s%s%s%s} tests%s\n",
2453                         usb_speed_string(udev->speed),
2454                         info->ctrl_out ? " in/out" : "",
2455                         rtest, wtest,
2456                         irtest, iwtest,
2457                         info->alt >= 0 ? " (+alt)" : "");
2458         return 0;
2459 }
2460
2461 static int usbtest_suspend(struct usb_interface *intf, pm_message_t message)
2462 {
2463         return 0;
2464 }
2465
2466 static int usbtest_resume(struct usb_interface *intf)
2467 {
2468         return 0;
2469 }
2470
2471
2472 static void usbtest_disconnect(struct usb_interface *intf)
2473 {
2474         struct usbtest_dev      *dev = usb_get_intfdata(intf);
2475
2476         usb_set_intfdata(intf, NULL);
2477         dev_dbg(&intf->dev, "disconnect\n");
2478         kfree(dev);
2479 }
2480
2481 /* Basic testing only needs a device that can source or sink bulk traffic.
2482  * Any device can test control transfers (default with GENERIC binding).
2483  *
2484  * Several entries work with the default EP0 implementation that's built
2485  * into EZ-USB chips.  There's a default vendor ID which can be overridden
2486  * by (very) small config EEPROMS, but otherwise all these devices act
2487  * identically until firmware is loaded:  only EP0 works.  It turns out
2488  * to be easy to make other endpoints work, without modifying that EP0
2489  * behavior.  For now, we expect that kind of firmware.
2490  */
2491
2492 /* an21xx or fx versions of ez-usb */
2493 static struct usbtest_info ez1_info = {
2494         .name           = "EZ-USB device",
2495         .ep_in          = 2,
2496         .ep_out         = 2,
2497         .alt            = 1,
2498 };
2499
2500 /* fx2 version of ez-usb */
2501 static struct usbtest_info ez2_info = {
2502         .name           = "FX2 device",
2503         .ep_in          = 6,
2504         .ep_out         = 2,
2505         .alt            = 1,
2506 };
2507
2508 /* ezusb family device with dedicated usb test firmware,
2509  */
2510 static struct usbtest_info fw_info = {
2511         .name           = "usb test device",
2512         .ep_in          = 2,
2513         .ep_out         = 2,
2514         .alt            = 1,
2515         .autoconf       = 1,            /* iso and ctrl_out need autoconf */
2516         .ctrl_out       = 1,
2517         .iso            = 1,            /* iso_ep's are #8 in/out */
2518 };
2519
2520 /* peripheral running Linux and 'zero.c' test firmware, or
2521  * its user-mode cousin. different versions of this use
2522  * different hardware with the same vendor/product codes.
2523  * host side MUST rely on the endpoint descriptors.
2524  */
2525 static struct usbtest_info gz_info = {
2526         .name           = "Linux gadget zero",
2527         .autoconf       = 1,
2528         .ctrl_out       = 1,
2529         .iso            = 1,
2530         .alt            = 0,
2531 };
2532
2533 static struct usbtest_info um_info = {
2534         .name           = "Linux user mode test driver",
2535         .autoconf       = 1,
2536         .alt            = -1,
2537 };
2538
2539 static struct usbtest_info um2_info = {
2540         .name           = "Linux user mode ISO test driver",
2541         .autoconf       = 1,
2542         .iso            = 1,
2543         .alt            = -1,
2544 };
2545
2546 #ifdef IBOT2
2547 /* this is a nice source of high speed bulk data;
2548  * uses an FX2, with firmware provided in the device
2549  */
2550 static struct usbtest_info ibot2_info = {
2551         .name           = "iBOT2 webcam",
2552         .ep_in          = 2,
2553         .alt            = -1,
2554 };
2555 #endif
2556
2557 #ifdef GENERIC
2558 /* we can use any device to test control traffic */
2559 static struct usbtest_info generic_info = {
2560         .name           = "Generic USB device",
2561         .alt            = -1,
2562 };
2563 #endif
2564
2565
2566 static const struct usb_device_id id_table[] = {
2567
2568         /*-------------------------------------------------------------*/
2569
2570         /* EZ-USB devices which download firmware to replace (or in our
2571          * case augment) the default device implementation.
2572          */
2573
2574         /* generic EZ-USB FX controller */
2575         { USB_DEVICE(0x0547, 0x2235),
2576                 .driver_info = (unsigned long) &ez1_info,
2577         },
2578
2579         /* CY3671 development board with EZ-USB FX */
2580         { USB_DEVICE(0x0547, 0x0080),
2581                 .driver_info = (unsigned long) &ez1_info,
2582         },
2583
2584         /* generic EZ-USB FX2 controller (or development board) */
2585         { USB_DEVICE(0x04b4, 0x8613),
2586                 .driver_info = (unsigned long) &ez2_info,
2587         },
2588
2589         /* re-enumerated usb test device firmware */
2590         { USB_DEVICE(0xfff0, 0xfff0),
2591                 .driver_info = (unsigned long) &fw_info,
2592         },
2593
2594         /* "Gadget Zero" firmware runs under Linux */
2595         { USB_DEVICE(0x0525, 0xa4a0),
2596                 .driver_info = (unsigned long) &gz_info,
2597         },
2598
2599         /* so does a user-mode variant */
2600         { USB_DEVICE(0x0525, 0xa4a4),
2601                 .driver_info = (unsigned long) &um_info,
2602         },
2603
2604         /* ... and a user-mode variant that talks iso */
2605         { USB_DEVICE(0x0525, 0xa4a3),
2606                 .driver_info = (unsigned long) &um2_info,
2607         },
2608
2609 #ifdef KEYSPAN_19Qi
2610         /* Keyspan 19qi uses an21xx (original EZ-USB) */
2611         /* this does not coexist with the real Keyspan 19qi driver! */
2612         { USB_DEVICE(0x06cd, 0x010b),
2613                 .driver_info = (unsigned long) &ez1_info,
2614         },
2615 #endif
2616
2617         /*-------------------------------------------------------------*/
2618
2619 #ifdef IBOT2
2620         /* iBOT2 makes a nice source of high speed bulk-in data */
2621         /* this does not coexist with a real iBOT2 driver! */
2622         { USB_DEVICE(0x0b62, 0x0059),
2623                 .driver_info = (unsigned long) &ibot2_info,
2624         },
2625 #endif
2626
2627         /*-------------------------------------------------------------*/
2628
2629 #ifdef GENERIC
2630         /* module params can specify devices to use for control tests */
2631         { .driver_info = (unsigned long) &generic_info, },
2632 #endif
2633
2634         /*-------------------------------------------------------------*/
2635
2636         { }
2637 };
2638 MODULE_DEVICE_TABLE(usb, id_table);
2639
2640 static struct usb_driver usbtest_driver = {
2641         .name =         "usbtest",
2642         .id_table =     id_table,
2643         .probe =        usbtest_probe,
2644         .unlocked_ioctl = usbtest_ioctl,
2645         .disconnect =   usbtest_disconnect,
2646         .suspend =      usbtest_suspend,
2647         .resume =       usbtest_resume,
2648 };
2649
2650 /*-------------------------------------------------------------------------*/
2651
2652 static int __init usbtest_init(void)
2653 {
2654 #ifdef GENERIC
2655         if (vendor)
2656                 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product);
2657 #endif
2658         return usb_register(&usbtest_driver);
2659 }
2660 module_init(usbtest_init);
2661
2662 static void __exit usbtest_exit(void)
2663 {
2664         usb_deregister(&usbtest_driver);
2665 }
2666 module_exit(usbtest_exit);
2667
2668 MODULE_DESCRIPTION("USB Core/HCD Testing Driver");
2669 MODULE_LICENSE("GPL");
2670