Pileus Git - ~andy/linux/blob - 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 static int is_good_con_id(struct usbtest_dev *tdev, u8 *buf)
 661 {
 662         struct usb_ss_container_id_descriptor *con_id;
 663
 664         con_id = (struct usb_ss_container_id_descriptor *) buf;
 665
 666         if (con_id->bLength != USB_DT_USB_SS_CONTN_ID_SIZE) {
 667                 ERROR(tdev, "bogus container id descriptor length\n");
 668                 return 0;
 669         }
 670
 671         if (con_id->bReserved) {        /* reserved == 0 */
 672                 ERROR(tdev, "reserved bits set\n");
 673                 return 0;
 674         }
 675
 676         return 1;
 677 }
 678
 679 /* sanity test for standard requests working with usb_control_mesg() and some
 680  * of the utility functions which use it.
 681  *
 682  * this doesn't test how endpoint halts behave or data toggles get set, since
 683  * we won't do I/O to bulk/interrupt endpoints here (which is how to change
 684  * halt or toggle).  toggle testing is impractical without support from hcds.
 685  *
 686  * this avoids failing devices linux would normally work with, by not testing
 687  * config/altsetting operations for devices that only support their defaults.
 688  * such devices rarely support those needless operations.
 689  *
 690  * NOTE that since this is a sanity test, it's not examining boundary cases
 691  * to see if usbcore, hcd, and device all behave right.  such testing would
 692  * involve varied read sizes and other operation sequences.
 693  */
 694 static int ch9_postconfig(struct usbtest_dev *dev)
 695 {
 696         struct usb_interface    *iface = dev->intf;
 697         struct usb_device       *udev = interface_to_usbdev(iface);
 698         int                     i, alt, retval;
 699
 700         /* [9.2.3] if there's more than one altsetting, we need to be able to
 701          * set and get each one.  mostly trusts the descriptors from usbcore.
 702          */
 703         for (i = 0; i < iface->num_altsetting; i++) {
 704
 705                 /* 9.2.3 constrains the range here */
 706                 alt = iface->altsetting[i].desc.bAlternateSetting;
 707                 if (alt < 0 || alt >= iface->num_altsetting) {
 708                         dev_err(&iface->dev,
 709                                         "invalid alt [%d].bAltSetting = %d\n",
 710                                         i, alt);
 711                 }
 712
 713                 /* [real world] get/set unimplemented if there's only one */
 714                 if (realworld && iface->num_altsetting == 1)
 715                         continue;
 716
 717                 /* [9.4.10] set_interface */
 718                 retval = set_altsetting(dev, alt);
 719                 if (retval) {
 720                         dev_err(&iface->dev, "can't set_interface = %d, %d\n",
 721                                         alt, retval);
 722                         return retval;
 723                 }
 724
 725                 /* [9.4.4] get_interface always works */
 726                 retval = get_altsetting(dev);
 727                 if (retval != alt) {
 728                         dev_err(&iface->dev, "get alt should be %d, was %d\n",
 729                                         alt, retval);
 730                         return (retval < 0) ? retval : -EDOM;
 731                 }
 732
 733         }
 734
 735         /* [real world] get_config unimplemented if there's only one */
 736         if (!realworld || udev->descriptor.bNumConfigurations != 1) {
 737                 int     expected = udev->actconfig->desc.bConfigurationValue;
 738
 739                 /* [9.4.2] get_configuration always works
 740                  * ... although some cheap devices (like one TI Hub I've got)
 741                  * won't return config descriptors except before set_config.
 742                  */
 743                 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 744                                 USB_REQ_GET_CONFIGURATION,
 745                                 USB_DIR_IN | USB_RECIP_DEVICE,
 746                                 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);
 747                 if (retval != 1 || dev->buf[0] != expected) {
 748                         dev_err(&iface->dev, "get config --> %d %d (1 %d)\n",
 749                                 retval, dev->buf[0], expected);
 750                         return (retval < 0) ? retval : -EDOM;
 751                 }
 752         }
 753
 754         /* there's always [9.4.3] a device descriptor [9.6.1] */
 755         retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0,
 756                         dev->buf, sizeof(udev->descriptor));
 757         if (retval != sizeof(udev->descriptor)) {
 758                 dev_err(&iface->dev, "dev descriptor --> %d\n", retval);
 759                 return (retval < 0) ? retval : -EDOM;
 760         }
 761
 762         /*
 763          * there's always [9.4.3] a bos device descriptor [9.6.2] in USB
 764          * 3.0 spec
 765          */
 766         if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0300) {
 767                 struct usb_bos_descriptor *bos = NULL;
 768                 struct usb_dev_cap_header *header = NULL;
 769                 unsigned total, num, length;
 770                 u8 *buf;
 771
 772                 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
 773                                 sizeof(*udev->bos->desc));
 774                 if (retval != sizeof(*udev->bos->desc)) {
 775                         dev_err(&iface->dev, "bos descriptor --> %d\n", retval);
 776                         return (retval < 0) ? retval : -EDOM;
 777                 }
 778
 779                 bos = (struct usb_bos_descriptor *)dev->buf;
 780                 total = le16_to_cpu(bos->wTotalLength);
 781                 num = bos->bNumDeviceCaps;
 782
 783                 if (total > TBUF_SIZE)
 784                         total = TBUF_SIZE;
 785
 786                 /*
 787                  * get generic device-level capability descriptors [9.6.2]
 788                  * in USB 3.0 spec
 789                  */
 790                 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
 791                                 total);
 792                 if (retval != total) {
 793                         dev_err(&iface->dev, "bos descriptor set --> %d\n",
 794                                         retval);
 795                         return (retval < 0) ? retval : -EDOM;
 796                 }
 797
 798                 length = sizeof(*udev->bos->desc);
 799                 buf = dev->buf;
 800                 for (i = 0; i < num; i++) {
 801                         buf += length;
 802                         if (buf + sizeof(struct usb_dev_cap_header) >
 803                                         dev->buf + total)
 804                                 break;
 805
 806                         header = (struct usb_dev_cap_header *)buf;
 807                         length = header->bLength;
 808
 809                         if (header->bDescriptorType !=
 810                                         USB_DT_DEVICE_CAPABILITY) {
 811                                 dev_warn(&udev->dev, "not device capability descriptor, skip\n");
 812                                 continue;
 813                         }
 814
 815                         switch (header->bDevCapabilityType) {
 816                         case USB_CAP_TYPE_EXT:
 817                                 if (buf + USB_DT_USB_EXT_CAP_SIZE >
 818                                                 dev->buf + total ||
 819                                                 !is_good_ext(dev, buf)) {
 820                                         dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n");
 821                                         return -EDOM;
 822                                 }
 823                                 break;
 824                         case USB_SS_CAP_TYPE:
 825                                 if (buf + USB_DT_USB_SS_CAP_SIZE >
 826                                                 dev->buf + total ||
 827                                                 !is_good_ss_cap(dev, buf)) {
 828                                         dev_err(&iface->dev, "bogus superspeed device capability descriptor\n");
 829                                         return -EDOM;
 830                                 }
 831                                 break;
 832                         case CONTAINER_ID_TYPE:
 833                                 if (buf + USB_DT_USB_SS_CONTN_ID_SIZE >
 834                                                 dev->buf + total ||
 835                                                 !is_good_con_id(dev, buf)) {
 836                                         dev_err(&iface->dev, "bogus container id descriptor\n");
 837                                         return -EDOM;
 838                                 }
 839                                 break;
 840                         default:
 841                                 break;
 842                         }
 843                 }
 844         }
 845
 846         /* there's always [9.4.3] at least one config descriptor [9.6.3] */
 847         for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
 848                 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i,
 849                                 dev->buf, TBUF_SIZE);
 850                 if (!is_good_config(dev, retval)) {
 851                         dev_err(&iface->dev,
 852                                         "config [%d] descriptor --> %d\n",
 853                                         i, retval);
 854                         return (retval < 0) ? retval : -EDOM;
 855                 }
 856
 857                 /* FIXME cross-checking udev->config[i] to make sure usbcore
 858                  * parsed it right (etc) would be good testing paranoia
 859                  */
 860         }
 861
 862         /* and sometimes [9.2.6.6] speed dependent descriptors */
 863         if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) {
 864                 struct usb_qualifier_descriptor *d = NULL;
 865
 866                 /* device qualifier [9.6.2] */
 867                 retval = usb_get_descriptor(udev,
 868                                 USB_DT_DEVICE_QUALIFIER, 0, dev->buf,
 869                                 sizeof(struct usb_qualifier_descriptor));
 870                 if (retval == -EPIPE) {
 871                         if (udev->speed == USB_SPEED_HIGH) {
 872                                 dev_err(&iface->dev,
 873                                                 "hs dev qualifier --> %d\n",
 874                                                 retval);
 875                                 return (retval < 0) ? retval : -EDOM;
 876                         }
 877                         /* usb2.0 but not high-speed capable; fine */
 878                 } else if (retval != sizeof(struct usb_qualifier_descriptor)) {
 879                         dev_err(&iface->dev, "dev qualifier --> %d\n", retval);
 880                         return (retval < 0) ? retval : -EDOM;
 881                 } else
 882                         d = (struct usb_qualifier_descriptor *) dev->buf;
 883
 884                 /* might not have [9.6.2] any other-speed configs [9.6.4] */
 885                 if (d) {
 886                         unsigned max = d->bNumConfigurations;
 887                         for (i = 0; i < max; i++) {
 888                                 retval = usb_get_descriptor(udev,
 889                                         USB_DT_OTHER_SPEED_CONFIG, i,
 890                                         dev->buf, TBUF_SIZE);
 891                                 if (!is_good_config(dev, retval)) {
 892                                         dev_err(&iface->dev,
 893                                                 "other speed config --> %d\n",
 894                                                 retval);
 895                                         return (retval < 0) ? retval : -EDOM;
 896                                 }
 897                         }
 898                 }
 899         }
 900         /* FIXME fetch strings from at least the device descriptor */
 901
 902         /* [9.4.5] get_status always works */
 903         retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf);
 904         if (retval) {
 905                 dev_err(&iface->dev, "get dev status --> %d\n", retval);
 906                 return retval;
 907         }
 908
 909         /* FIXME configuration.bmAttributes says if we could try to set/clear
 910          * the device's remote wakeup feature ... if we can, test that here
 911          */
 912
 913         retval = usb_get_status(udev, USB_RECIP_INTERFACE,
 914                         iface->altsetting[0].desc.bInterfaceNumber, dev->buf);
 915         if (retval) {
 916                 dev_err(&iface->dev, "get interface status --> %d\n", retval);
 917                 return retval;
 918         }
 919         /* FIXME get status for each endpoint in the interface */
 920
 921         return 0;
 922 }
 923
 924 /*-------------------------------------------------------------------------*/
 925
 926 /* use ch9 requests to test whether:
 927  *   (a) queues work for control, keeping N subtests queued and
 928  *       active (auto-resubmit) for M loops through the queue.
 929  *   (b) protocol stalls (control-only) will autorecover.
 930  *       it's not like bulk/intr; no halt clearing.
 931  *   (c) short control reads are reported and handled.
 932  *   (d) queues are always processed in-order
 933  */
 934
 935 struct ctrl_ctx {
 936         spinlock_t              lock;
 937         struct usbtest_dev      *dev;
 938         struct completion       complete;
 939         unsigned                count;
 940         unsigned                pending;
 941         int                     status;
 942         struct urb              **urb;
 943         struct usbtest_param    *param;
 944         int                     last;
 945 };
 946
 947 #define NUM_SUBCASES    15              /* how many test subcases here? */
 948
 949 struct subcase {
 950         struct usb_ctrlrequest  setup;
 951         int                     number;
 952         int                     expected;
 953 };
 954
 955 static void ctrl_complete(struct urb *urb)
 956 {
 957         struct ctrl_ctx         *ctx = urb->context;
 958         struct usb_ctrlrequest  *reqp;
 959         struct subcase          *subcase;
 960         int                     status = urb->status;
 961
 962         reqp = (struct usb_ctrlrequest *)urb->setup_packet;
 963         subcase = container_of(reqp, struct subcase, setup);
 964
 965         spin_lock(&ctx->lock);
 966         ctx->count--;
 967         ctx->pending--;
 968
 969         /* queue must transfer and complete in fifo order, unless
 970          * usb_unlink_urb() is used to unlink something not at the
 971          * physical queue head (not tested).
 972          */
 973         if (subcase->number > 0) {
 974                 if ((subcase->number - ctx->last) != 1) {
 975                         ERROR(ctx->dev,
 976                                 "subcase %d completed out of order, last %d\n",
 977                                 subcase->number, ctx->last);
 978                         status = -EDOM;
 979                         ctx->last = subcase->number;
 980                         goto error;
 981                 }
 982         }
 983         ctx->last = subcase->number;
 984
 985         /* succeed or fault in only one way? */
 986         if (status == subcase->expected)
 987                 status = 0;
 988
 989         /* async unlink for cleanup? */
 990         else if (status != -ECONNRESET) {
 991
 992                 /* some faults are allowed, not required */
 993                 if (subcase->expected > 0 && (
 994                           ((status == -subcase->expected        /* happened */
 995                            || status == 0))))                   /* didn't */
 996                         status = 0;
 997                 /* sometimes more than one fault is allowed */
 998                 else if (subcase->number == 12 && status == -EPIPE)
 999                         status = 0;
1000                 else
1001                         ERROR(ctx->dev, "subtest %d error, status %d\n",
1002                                         subcase->number, status);
1003         }
1004
1005         /* unexpected status codes mean errors; ideally, in hardware */
1006         if (status) {
1007 error:
1008                 if (ctx->status == 0) {
1009                         int             i;
1010
1011                         ctx->status = status;
1012                         ERROR(ctx->dev, "control queue %02x.%02x, err %d, "
1013                                         "%d left, subcase %d, len %d/%d\n",
1014                                         reqp->bRequestType, reqp->bRequest,
1015                                         status, ctx->count, subcase->number,
1016                                         urb->actual_length,
1017                                         urb->transfer_buffer_length);
1018
1019                         /* FIXME this "unlink everything" exit route should
1020                          * be a separate test case.
1021                          */
1022
1023                         /* unlink whatever's still pending */
1024                         for (i = 1; i < ctx->param->sglen; i++) {
1025                                 struct urb *u = ctx->urb[
1026                                                         (i + subcase->number)
1027                                                         % ctx->param->sglen];
1028
1029                                 if (u == urb || !u->dev)
1030                                         continue;
1031                                 spin_unlock(&ctx->lock);
1032                                 status = usb_unlink_urb(u);
1033                                 spin_lock(&ctx->lock);
1034                                 switch (status) {
1035                                 case -EINPROGRESS:
1036                                 case -EBUSY:
1037                                 case -EIDRM:
1038                                         continue;
1039                                 default:
1040                                         ERROR(ctx->dev, "urb unlink --> %d\n",
1041                                                         status);
1042                                 }
1043                         }
1044                         status = ctx->status;
1045                 }
1046         }
1047
1048         /* resubmit if we need to, else mark this as done */
1049         if ((status == 0) && (ctx->pending < ctx->count)) {
1050                 status = usb_submit_urb(urb, GFP_ATOMIC);
1051                 if (status != 0) {
1052                         ERROR(ctx->dev,
1053                                 "can't resubmit ctrl %02x.%02x, err %d\n",
1054                                 reqp->bRequestType, reqp->bRequest, status);
1055                         urb->dev = NULL;
1056                 } else
1057                         ctx->pending++;
1058         } else
1059                 urb->dev = NULL;
1060
1061         /* signal completion when nothing's queued */
1062         if (ctx->pending == 0)
1063                 complete(&ctx->complete);
1064         spin_unlock(&ctx->lock);
1065 }
1066
1067 static int
1068 test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param)
1069 {
1070         struct usb_device       *udev = testdev_to_usbdev(dev);
1071         struct urb              **urb;
1072         struct ctrl_ctx         context;
1073         int                     i;
1074
1075         if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen)
1076                 return -EOPNOTSUPP;
1077
1078         spin_lock_init(&context.lock);
1079         context.dev = dev;
1080         init_completion(&context.complete);
1081         context.count = param->sglen * param->iterations;
1082         context.pending = 0;
1083         context.status = -ENOMEM;
1084         context.param = param;
1085         context.last = -1;
1086
1087         /* allocate and init the urbs we'll queue.
1088          * as with bulk/intr sglists, sglen is the queue depth; it also
1089          * controls which subtests run (more tests than sglen) or rerun.
1090          */
1091         urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL);
1092         if (!urb)
1093                 return -ENOMEM;
1094         for (i = 0; i < param->sglen; i++) {
1095                 int                     pipe = usb_rcvctrlpipe(udev, 0);
1096                 unsigned                len;
1097                 struct urb              *u;
1098                 struct usb_ctrlrequest  req;
1099                 struct subcase          *reqp;
1100
1101                 /* sign of this variable means:
1102                  *  -: tested code must return this (negative) error code
1103                  *  +: tested code may return this (negative too) error code
1104                  */
1105                 int                     expected = 0;
1106
1107                 /* requests here are mostly expected to succeed on any
1108                  * device, but some are chosen to trigger protocol stalls
1109                  * or short reads.
1110                  */
1111                 memset(&req, 0, sizeof(req));
1112                 req.bRequest = USB_REQ_GET_DESCRIPTOR;
1113                 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1114
1115                 switch (i % NUM_SUBCASES) {
1116                 case 0:         /* get device descriptor */
1117                         req.wValue = cpu_to_le16(USB_DT_DEVICE << 8);
1118                         len = sizeof(struct usb_device_descriptor);
1119                         break;
1120                 case 1:         /* get first config descriptor (only) */
1121                         req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1122                         len = sizeof(struct usb_config_descriptor);
1123                         break;
1124                 case 2:         /* get altsetting (OFTEN STALLS) */
1125                         req.bRequest = USB_REQ_GET_INTERFACE;
1126                         req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1127                         /* index = 0 means first interface */
1128                         len = 1;
1129                         expected = EPIPE;
1130                         break;
1131                 case 3:         /* get interface status */
1132                         req.bRequest = USB_REQ_GET_STATUS;
1133                         req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
1134                         /* interface 0 */
1135                         len = 2;
1136                         break;
1137                 case 4:         /* get device status */
1138                         req.bRequest = USB_REQ_GET_STATUS;
1139                         req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
1140                         len = 2;
1141                         break;
1142                 case 5:         /* get device qualifier (MAY STALL) */
1143                         req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8);
1144                         len = sizeof(struct usb_qualifier_descriptor);
1145                         if (udev->speed != USB_SPEED_HIGH)
1146                                 expected = EPIPE;
1147                         break;
1148                 case 6:         /* get first config descriptor, plus interface */
1149                         req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1150                         len = sizeof(struct usb_config_descriptor);
1151                         len += sizeof(struct usb_interface_descriptor);
1152                         break;
1153                 case 7:         /* get interface descriptor (ALWAYS STALLS) */
1154                         req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8);
1155                         /* interface == 0 */
1156                         len = sizeof(struct usb_interface_descriptor);
1157                         expected = -EPIPE;
1158                         break;
1159                 /* NOTE: two consecutive stalls in the queue here.
1160                  *  that tests fault recovery a bit more aggressively. */
1161                 case 8:         /* clear endpoint halt (MAY STALL) */
1162                         req.bRequest = USB_REQ_CLEAR_FEATURE;
1163                         req.bRequestType = USB_RECIP_ENDPOINT;
1164                         /* wValue 0 == ep halt */
1165                         /* wIndex 0 == ep0 (shouldn't halt!) */
1166                         len = 0;
1167                         pipe = usb_sndctrlpipe(udev, 0);
1168                         expected = EPIPE;
1169                         break;
1170                 case 9:         /* get endpoint status */
1171                         req.bRequest = USB_REQ_GET_STATUS;
1172                         req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT;
1173                         /* endpoint 0 */
1174                         len = 2;
1175                         break;
1176                 case 10:        /* trigger short read (EREMOTEIO) */
1177                         req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1178                         len = 1024;
1179                         expected = -EREMOTEIO;
1180                         break;
1181                 /* NOTE: two consecutive _different_ faults in the queue. */
1182                 case 11:        /* get endpoint descriptor (ALWAYS STALLS) */
1183                         req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8);
1184                         /* endpoint == 0 */
1185                         len = sizeof(struct usb_interface_descriptor);
1186                         expected = EPIPE;
1187                         break;
1188                 /* NOTE: sometimes even a third fault in the queue! */
1189                 case 12:        /* get string 0 descriptor (MAY STALL) */
1190                         req.wValue = cpu_to_le16(USB_DT_STRING << 8);
1191                         /* string == 0, for language IDs */
1192                         len = sizeof(struct usb_interface_descriptor);
1193                         /* may succeed when > 4 languages */
1194                         expected = EREMOTEIO;   /* or EPIPE, if no strings */
1195                         break;
1196                 case 13:        /* short read, resembling case 10 */
1197                         req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
1198                         /* last data packet "should" be DATA1, not DATA0 */
1199                         if (udev->speed == USB_SPEED_SUPER)
1200                                 len = 1024 - 512;
1201                         else
1202                                 len = 1024 - udev->descriptor.bMaxPacketSize0;
1203                         expected = -EREMOTEIO;
1204                         break;
1205                 case 14:        /* short read; try to fill the last packet */
1206                         req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0);
1207                         /* device descriptor size == 18 bytes */
1208                         len = udev->descriptor.bMaxPacketSize0;
1209                         if (udev->speed == USB_SPEED_SUPER)
1210                                 len = 512;
1211                         switch (len) {
1212                         case 8:
1213                                 len = 24;
1214                                 break;
1215                         case 16:
1216                                 len = 32;
1217                                 break;
1218                         }
1219                         expected = -EREMOTEIO;
1220                         break;
1221                 default:
1222                         ERROR(dev, "bogus number of ctrl queue testcases!\n");
1223                         context.status = -EINVAL;
1224                         goto cleanup;
1225                 }
1226                 req.wLength = cpu_to_le16(len);
1227                 urb[i] = u = simple_alloc_urb(udev, pipe, len);
1228                 if (!u)
1229                         goto cleanup;
1230
1231                 reqp = kmalloc(sizeof(*reqp), GFP_KERNEL);
1232                 if (!reqp)
1233                         goto cleanup;
1234                 reqp->setup = req;
1235                 reqp->number = i % NUM_SUBCASES;
1236                 reqp->expected = expected;
1237                 u->setup_packet = (char *) &reqp->setup;
1238
1239                 u->context = &context;
1240                 u->complete = ctrl_complete;
1241         }
1242
1243         /* queue the urbs */
1244         context.urb = urb;
1245         spin_lock_irq(&context.lock);
1246         for (i = 0; i < param->sglen; i++) {
1247                 context.status = usb_submit_urb(urb[i], GFP_ATOMIC);
1248                 if (context.status != 0) {
1249                         ERROR(dev, "can't submit urb[%d], status %d\n",
1250                                         i, context.status);
1251                         context.count = context.pending;
1252                         break;
1253                 }
1254                 context.pending++;
1255         }
1256         spin_unlock_irq(&context.lock);
1257
1258         /* FIXME  set timer and time out; provide a disconnect hook */
1259
1260         /* wait for the last one to complete */
1261         if (context.pending > 0)
1262                 wait_for_completion(&context.complete);
1263
1264 cleanup:
1265         for (i = 0; i < param->sglen; i++) {
1266                 if (!urb[i])
1267                         continue;
1268                 urb[i]->dev = udev;
1269                 kfree(urb[i]->setup_packet);
1270                 simple_free_urb(urb[i]);
1271         }
1272         kfree(urb);
1273         return context.status;
1274 }
1275 #undef NUM_SUBCASES
1276
1277
1278 /*-------------------------------------------------------------------------*/
1279
1280 static void unlink1_callback(struct urb *urb)
1281 {
1282         int     status = urb->status;
1283
1284         /* we "know" -EPIPE (stall) never happens */
1285         if (!status)
1286                 status = usb_submit_urb(urb, GFP_ATOMIC);
1287         if (status) {
1288                 urb->status = status;
1289                 complete(urb->context);
1290         }
1291 }
1292
1293 static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
1294 {
1295         struct urb              *urb;
1296         struct completion       completion;
1297         int                     retval = 0;
1298
1299         init_completion(&completion);
1300         urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size);
1301         if (!urb)
1302                 return -ENOMEM;
1303         urb->context = &completion;
1304         urb->complete = unlink1_callback;
1305
1306         /* keep the endpoint busy.  there are lots of hc/hcd-internal
1307          * states, and testing should get to all of them over time.
1308          *
1309          * FIXME want additional tests for when endpoint is STALLing
1310          * due to errors, or is just NAKing requests.
1311          */
1312         retval = usb_submit_urb(urb, GFP_KERNEL);
1313         if (retval != 0) {
1314                 dev_err(&dev->intf->dev, "submit fail %d\n", retval);
1315                 return retval;
1316         }
1317
1318         /* unlinking that should always work.  variable delay tests more
1319          * hcd states and code paths, even with little other system load.
1320          */
1321         msleep(jiffies % (2 * INTERRUPT_RATE));
1322         if (async) {
1323                 while (!completion_done(&completion)) {
1324                         retval = usb_unlink_urb(urb);
1325
1326                         switch (retval) {
1327                         case -EBUSY:
1328                         case -EIDRM:
1329                                 /* we can't unlink urbs while they're completing
1330                                  * or if they've completed, and we haven't
1331                                  * resubmitted. "normal" drivers would prevent
1332                                  * resubmission, but since we're testing unlink
1333                                  * paths, we can't.
1334                                  */
1335                                 ERROR(dev, "unlink retry\n");
1336                                 continue;
1337                         case 0:
1338                         case -EINPROGRESS:
1339                                 break;
1340
1341                         default:
1342                                 dev_err(&dev->intf->dev,
1343                                         "unlink fail %d\n", retval);
1344                                 return retval;
1345                         }
1346
1347                         break;
1348                 }
1349         } else
1350                 usb_kill_urb(urb);
1351
1352         wait_for_completion(&completion);
1353         retval = urb->status;
1354         simple_free_urb(urb);
1355
1356         if (async)
1357                 return (retval == -ECONNRESET) ? 0 : retval - 1000;
1358         else
1359                 return (retval == -ENOENT || retval == -EPERM) ?
1360                                 0 : retval - 2000;
1361 }
1362
1363 static int unlink_simple(struct usbtest_dev *dev, int pipe, int len)
1364 {
1365         int                     retval = 0;
1366
1367         /* test sync and async paths */
1368         retval = unlink1(dev, pipe, len, 1);
1369         if (!retval)
1370                 retval = unlink1(dev, pipe, len, 0);
1371         return retval;
1372 }
1373
1374 /*-------------------------------------------------------------------------*/
1375
1376 struct queued_ctx {
1377         struct completion       complete;
1378         atomic_t                pending;
1379         unsigned                num;
1380         int                     status;
1381         struct urb              **urbs;
1382 };
1383
1384 static void unlink_queued_callback(struct urb *urb)
1385 {
1386         int                     status = urb->status;
1387         struct queued_ctx       *ctx = urb->context;
1388
1389         if (ctx->status)
1390                 goto done;
1391         if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) {
1392                 if (status == -ECONNRESET)
1393                         goto done;
1394                 /* What error should we report if the URB completed normally? */
1395         }
1396         if (status != 0)
1397                 ctx->status = status;
1398
1399  done:
1400         if (atomic_dec_and_test(&ctx->pending))
1401                 complete(&ctx->complete);
1402 }
1403
1404 static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num,
1405                 unsigned size)
1406 {
1407         struct queued_ctx       ctx;
1408         struct usb_device       *udev = testdev_to_usbdev(dev);
1409         void                    *buf;
1410         dma_addr_t              buf_dma;
1411         int                     i;
1412         int                     retval = -ENOMEM;
1413
1414         init_completion(&ctx.complete);
1415         atomic_set(&ctx.pending, 1);    /* One more than the actual value */
1416         ctx.num = num;
1417         ctx.status = 0;
1418
1419         buf = usb_alloc_coherent(udev, size, GFP_KERNEL, &buf_dma);
1420         if (!buf)
1421                 return retval;
1422         memset(buf, 0, size);
1423
1424         /* Allocate and init the urbs we'll queue */
1425         ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL);
1426         if (!ctx.urbs)
1427                 goto free_buf;
1428         for (i = 0; i < num; i++) {
1429                 ctx.urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
1430                 if (!ctx.urbs[i])
1431                         goto free_urbs;
1432                 usb_fill_bulk_urb(ctx.urbs[i], udev, pipe, buf, size,
1433                                 unlink_queued_callback, &ctx);
1434                 ctx.urbs[i]->transfer_dma = buf_dma;
1435                 ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1436         }
1437
1438         /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */
1439         for (i = 0; i < num; i++) {
1440                 atomic_inc(&ctx.pending);
1441                 retval = usb_submit_urb(ctx.urbs[i], GFP_KERNEL);
1442                 if (retval != 0) {
1443                         dev_err(&dev->intf->dev, "submit urbs[%d] fail %d\n",
1444                                         i, retval);
1445                         atomic_dec(&ctx.pending);
1446                         ctx.status = retval;
1447                         break;
1448                 }
1449         }
1450         if (i == num) {
1451                 usb_unlink_urb(ctx.urbs[num - 4]);
1452                 usb_unlink_urb(ctx.urbs[num - 2]);
1453         } else {
1454                 while (--i >= 0)
1455                         usb_unlink_urb(ctx.urbs[i]);
1456         }
1457
1458         if (atomic_dec_and_test(&ctx.pending))          /* The extra count */
1459                 complete(&ctx.complete);
1460         wait_for_completion(&ctx.complete);
1461         retval = ctx.status;
1462
1463  free_urbs:
1464         for (i = 0; i < num; i++)
1465                 usb_free_urb(ctx.urbs[i]);
1466         kfree(ctx.urbs);
1467  free_buf:
1468         usb_free_coherent(udev, size, buf, buf_dma);
1469         return retval;
1470 }
1471
1472 /*-------------------------------------------------------------------------*/
1473
1474 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1475 {
1476         int     retval;
1477         u16     status;
1478
1479         /* shouldn't look or act halted */
1480         retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1481         if (retval < 0) {
1482                 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n",
1483                                 ep, retval);
1484                 return retval;
1485         }
1486         if (status != 0) {
1487                 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status);
1488                 return -EINVAL;
1489         }
1490         retval = simple_io(tdev, urb, 1, 0, 0, __func__);
1491         if (retval != 0)
1492                 return -EINVAL;
1493         return 0;
1494 }
1495
1496 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
1497 {
1498         int     retval;
1499         u16     status;
1500
1501         /* should look and act halted */
1502         retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
1503         if (retval < 0) {
1504                 ERROR(tdev, "ep %02x couldn't get halt status, %d\n",
1505                                 ep, retval);
1506                 return retval;
1507         }
1508         if (status != 1) {
1509                 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status);
1510                 return -EINVAL;
1511         }
1512         retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__);
1513         if (retval != -EPIPE)
1514                 return -EINVAL;
1515         retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted");
1516         if (retval != -EPIPE)
1517                 return -EINVAL;
1518         return 0;
1519 }
1520
1521 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb)
1522 {
1523         int     retval;
1524
1525         /* shouldn't look or act halted now */
1526         retval = verify_not_halted(tdev, ep, urb);
1527         if (retval < 0)
1528                 return retval;
1529
1530         /* set halt (protocol test only), verify it worked */
1531         retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0),
1532                         USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT,
1533                         USB_ENDPOINT_HALT, ep,
1534                         NULL, 0, USB_CTRL_SET_TIMEOUT);
1535         if (retval < 0) {
1536                 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval);
1537                 return retval;
1538         }
1539         retval = verify_halted(tdev, ep, urb);
1540         if (retval < 0)
1541                 return retval;
1542
1543         /* clear halt (tests API + protocol), verify it worked */
1544         retval = usb_clear_halt(urb->dev, urb->pipe);
1545         if (retval < 0) {
1546                 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval);
1547                 return retval;
1548         }
1549         retval = verify_not_halted(tdev, ep, urb);
1550         if (retval < 0)
1551                 return retval;
1552
1553         /* NOTE:  could also verify SET_INTERFACE clear halts ... */
1554
1555         return 0;
1556 }
1557
1558 static int halt_simple(struct usbtest_dev *dev)
1559 {
1560         int                     ep;
1561         int                     retval = 0;
1562         struct urb              *urb;
1563         struct usb_device       *udev = testdev_to_usbdev(dev);
1564
1565         if (udev->speed == USB_SPEED_SUPER)
1566                 urb = simple_alloc_urb(udev, 0, 1024);
1567         else
1568                 urb = simple_alloc_urb(udev, 0, 512);
1569         if (urb == NULL)
1570                 return -ENOMEM;
1571
1572         if (dev->in_pipe) {
1573                 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN;
1574                 urb->pipe = dev->in_pipe;
1575                 retval = test_halt(dev, ep, urb);
1576                 if (retval < 0)
1577                         goto done;
1578         }
1579
1580         if (dev->out_pipe) {
1581                 ep = usb_pipeendpoint(dev->out_pipe);
1582                 urb->pipe = dev->out_pipe;
1583                 retval = test_halt(dev, ep, urb);
1584         }
1585 done:
1586         simple_free_urb(urb);
1587         return retval;
1588 }
1589
1590 /*-------------------------------------------------------------------------*/
1591
1592 /* Control OUT tests use the vendor control requests from Intel's
1593  * USB 2.0 compliance test device:  write a buffer, read it back.
1594  *
1595  * Intel's spec only _requires_ that it work for one packet, which
1596  * is pretty weak.   Some HCDs place limits here; most devices will
1597  * need to be able to handle more than one OUT data packet.  We'll
1598  * try whatever we're told to try.
1599  */
1600 static int ctrl_out(struct usbtest_dev *dev,
1601                 unsigned count, unsigned length, unsigned vary, unsigned offset)
1602 {
1603         unsigned                i, j, len;
1604         int                     retval;
1605         u8                      *buf;
1606         char                    *what = "?";
1607         struct usb_device       *udev;
1608
1609         if (length < 1 || length > 0xffff || vary >= length)
1610                 return -EINVAL;
1611
1612         buf = kmalloc(length + offset, GFP_KERNEL);
1613         if (!buf)
1614                 return -ENOMEM;
1615
1616         buf += offset;
1617         udev = testdev_to_usbdev(dev);
1618         len = length;
1619         retval = 0;
1620
1621         /* NOTE:  hardware might well act differently if we pushed it
1622          * with lots back-to-back queued requests.
1623          */
1624         for (i = 0; i < count; i++) {
1625                 /* write patterned data */
1626                 for (j = 0; j < len; j++)
1627                         buf[j] = i + j;
1628                 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
1629                                 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR,
1630                                 0, 0, buf, len, USB_CTRL_SET_TIMEOUT);
1631                 if (retval != len) {
1632                         what = "write";
1633                         if (retval >= 0) {
1634                                 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n",
1635                                                 retval, len);
1636                                 retval = -EBADMSG;
1637                         }
1638                         break;
1639                 }
1640
1641                 /* read it back -- assuming nothing intervened!!  */
1642                 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
1643                                 0x5c, USB_DIR_IN|USB_TYPE_VENDOR,
1644                                 0, 0, buf, len, USB_CTRL_GET_TIMEOUT);
1645                 if (retval != len) {
1646                         what = "read";
1647                         if (retval >= 0) {
1648                                 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n",
1649                                                 retval, len);
1650                                 retval = -EBADMSG;
1651                         }
1652                         break;
1653                 }
1654
1655                 /* fail if we can't verify */
1656                 for (j = 0; j < len; j++) {
1657                         if (buf[j] != (u8) (i + j)) {
1658                                 ERROR(dev, "ctrl_out, byte %d is %d not %d\n",
1659                                         j, buf[j], (u8) i + j);
1660                                 retval = -EBADMSG;
1661                                 break;
1662                         }
1663                 }
1664                 if (retval < 0) {
1665                         what = "verify";
1666                         break;
1667                 }
1668
1669                 len += vary;
1670
1671                 /* [real world] the "zero bytes IN" case isn't really used.
1672                  * hardware can easily trip up in this weird case, since its
1673                  * status stage is IN, not OUT like other ep0in transfers.
1674                  */
1675                 if (len > length)
1676                         len = realworld ? 1 : 0;
1677         }
1678
1679         if (retval < 0)
1680                 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n",
1681                         what, retval, i);
1682
1683         kfree(buf - offset);
1684         return retval;
1685 }
1686
1687 /*-------------------------------------------------------------------------*/
1688
1689 /* ISO tests ... mimics common usage
1690  *  - buffer length is split into N packets (mostly maxpacket sized)
1691  *  - multi-buffers according to sglen
1692  */
1693
1694 struct iso_context {
1695         unsigned                count;
1696         unsigned                pending;
1697         spinlock_t              lock;
1698         struct completion       done;
1699         int                     submit_error;
1700         unsigned long           errors;
1701         unsigned long           packet_count;
1702         struct usbtest_dev      *dev;
1703 };
1704
1705 static void iso_callback(struct urb *urb)
1706 {
1707         struct iso_context      *ctx = urb->context;
1708
1709         spin_lock(&ctx->lock);
1710         ctx->count--;
1711
1712         ctx->packet_count += urb->number_of_packets;
1713         if (urb->error_count > 0)
1714                 ctx->errors += urb->error_count;
1715         else if (urb->status != 0)
1716                 ctx->errors += urb->number_of_packets;
1717         else if (urb->actual_length != urb->transfer_buffer_length)
1718                 ctx->errors++;
1719         else if (check_guard_bytes(ctx->dev, urb) != 0)
1720                 ctx->errors++;
1721
1722         if (urb->status == 0 && ctx->count > (ctx->pending - 1)
1723                         && !ctx->submit_error) {
1724                 int status = usb_submit_urb(urb, GFP_ATOMIC);
1725                 switch (status) {
1726                 case 0:
1727                         goto done;
1728                 default:
1729                         dev_err(&ctx->dev->intf->dev,
1730                                         "iso resubmit err %d\n",
1731                                         status);
1732                         /* FALLTHROUGH */
1733                 case -ENODEV:                   /* disconnected */
1734                 case -ESHUTDOWN:                /* endpoint disabled */
1735                         ctx->submit_error = 1;
1736                         break;
1737                 }
1738         }
1739
1740         ctx->pending--;
1741         if (ctx->pending == 0) {
1742                 if (ctx->errors)
1743                         dev_err(&ctx->dev->intf->dev,
1744                                 "iso test, %lu errors out of %lu\n",
1745                                 ctx->errors, ctx->packet_count);
1746                 complete(&ctx->done);
1747         }
1748 done:
1749         spin_unlock(&ctx->lock);
1750 }
1751
1752 static struct urb *iso_alloc_urb(
1753         struct usb_device       *udev,
1754         int                     pipe,
1755         struct usb_endpoint_descriptor  *desc,
1756         long                    bytes,
1757         unsigned offset
1758 )
1759 {
1760         struct urb              *urb;
1761         unsigned                i, maxp, packets;
1762
1763         if (bytes < 0 || !desc)
1764                 return NULL;
1765         maxp = 0x7ff & usb_endpoint_maxp(desc);
1766         maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11));
1767         packets = DIV_ROUND_UP(bytes, maxp);
1768
1769         urb = usb_alloc_urb(packets, GFP_KERNEL);
1770         if (!urb)
1771                 return urb;
1772         urb->dev = udev;
1773         urb->pipe = pipe;
1774
1775         urb->number_of_packets = packets;
1776         urb->transfer_buffer_length = bytes;
1777         urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
1778                                                         GFP_KERNEL,
1779                                                         &urb->transfer_dma);
1780         if (!urb->transfer_buffer) {
1781                 usb_free_urb(urb);
1782                 return NULL;
1783         }
1784         if (offset) {
1785                 memset(urb->transfer_buffer, GUARD_BYTE, offset);
1786                 urb->transfer_buffer += offset;
1787                 urb->transfer_dma += offset;
1788         }
1789         /* For inbound transfers use guard byte so that test fails if
1790                 data not correctly copied */
1791         memset(urb->transfer_buffer,
1792                         usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
1793                         bytes);
1794
1795         for (i = 0; i < packets; i++) {
1796                 /* here, only the last packet will be short */
1797                 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp);
1798                 bytes -= urb->iso_frame_desc[i].length;
1799
1800                 urb->iso_frame_desc[i].offset = maxp * i;
1801         }
1802
1803         urb->complete = iso_callback;
1804         /* urb->context = SET BY CALLER */
1805         urb->interval = 1 << (desc->bInterval - 1);
1806         urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1807         return urb;
1808 }
1809
1810 static int
1811 test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param,
1812                 int pipe, struct usb_endpoint_descriptor *desc, unsigned offset)
1813 {
1814         struct iso_context      context;
1815         struct usb_device       *udev;
1816         unsigned                i;
1817         unsigned long           packets = 0;
1818         int                     status = 0;
1819         struct urb              *urbs[10];      /* FIXME no limit */
1820
1821         if (param->sglen > 10)
1822                 return -EDOM;
1823
1824         memset(&context, 0, sizeof(context));
1825         context.count = param->iterations * param->sglen;
1826         context.dev = dev;
1827         init_completion(&context.done);
1828         spin_lock_init(&context.lock);
1829
1830         memset(urbs, 0, sizeof(urbs));
1831         udev = testdev_to_usbdev(dev);
1832         dev_info(&dev->intf->dev,
1833                 "... iso period %d %sframes, wMaxPacket %04x\n",
1834                 1 << (desc->bInterval - 1),
1835                 (udev->speed == USB_SPEED_HIGH) ? "micro" : "",
1836                 usb_endpoint_maxp(desc));
1837
1838         for (i = 0; i < param->sglen; i++) {
1839                 urbs[i] = iso_alloc_urb(udev, pipe, desc,
1840                                         param->length, offset);
1841                 if (!urbs[i]) {
1842                         status = -ENOMEM;
1843                         goto fail;
1844                 }
1845                 packets += urbs[i]->number_of_packets;
1846                 urbs[i]->context = &context;
1847         }
1848         packets *= param->iterations;
1849         dev_info(&dev->intf->dev,
1850                 "... total %lu msec (%lu packets)\n",
1851                 (packets * (1 << (desc->bInterval - 1)))
1852                         / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1),
1853                 packets);
1854
1855         spin_lock_irq(&context.lock);
1856         for (i = 0; i < param->sglen; i++) {
1857                 ++context.pending;
1858                 status = usb_submit_urb(urbs[i], GFP_ATOMIC);
1859                 if (status < 0) {
1860                         ERROR(dev, "submit iso[%d], error %d\n", i, status);
1861                         if (i == 0) {
1862                                 spin_unlock_irq(&context.lock);
1863                                 goto fail;
1864                         }
1865
1866                         simple_free_urb(urbs[i]);
1867                         urbs[i] = NULL;
1868                         context.pending--;
1869                         context.submit_error = 1;
1870                         break;
1871                 }
1872         }
1873         spin_unlock_irq(&context.lock);
1874
1875         wait_for_completion(&context.done);
1876
1877         for (i = 0; i < param->sglen; i++) {
1878                 if (urbs[i])
1879                         simple_free_urb(urbs[i]);
1880         }
1881         /*
1882          * Isochronous transfers are expected to fail sometimes.  As an
1883          * arbitrary limit, we will report an error if any submissions
1884          * fail or if the transfer failure rate is > 10%.
1885          */
1886         if (status != 0)
1887                 ;
1888         else if (context.submit_error)
1889                 status = -EACCES;
1890         else if (context.errors > context.packet_count / 10)
1891                 status = -EIO;
1892         return status;
1893
1894 fail:
1895         for (i = 0; i < param->sglen; i++) {
1896                 if (urbs[i])
1897                         simple_free_urb(urbs[i]);
1898         }
1899         return status;
1900 }
1901
1902 static int test_unaligned_bulk(
1903         struct usbtest_dev *tdev,
1904         int pipe,
1905         unsigned length,
1906         int iterations,
1907         unsigned transfer_flags,
1908         const char *label)
1909 {
1910         int retval;
1911         struct urb *urb = usbtest_alloc_urb(
1912                 testdev_to_usbdev(tdev), pipe, length, transfer_flags, 1);
1913
1914         if (!urb)
1915                 return -ENOMEM;
1916
1917         retval = simple_io(tdev, urb, iterations, 0, 0, label);
1918         simple_free_urb(urb);
1919         return retval;
1920 }
1921
1922 /*-------------------------------------------------------------------------*/
1923
1924 /* We only have this one interface to user space, through usbfs.
1925  * User mode code can scan usbfs to find N different devices (maybe on
1926  * different busses) to use when testing, and allocate one thread per
1927  * test.  So discovery is simplified, and we have no device naming issues.
1928  *
1929  * Don't use these only as stress/load tests.  Use them along with with
1930  * other USB bus activity:  plugging, unplugging, mousing, mp3 playback,
1931  * video capture, and so on.  Run different tests at different times, in
1932  * different sequences.  Nothing here should interact with other devices,
1933  * except indirectly by consuming USB bandwidth and CPU resources for test
1934  * threads and request completion.  But the only way to know that for sure
1935  * is to test when HC queues are in use by many devices.
1936  *
1937  * WARNING:  Because usbfs grabs udev->dev.sem before calling this ioctl(),
1938  * it locks out usbcore in certain code paths.  Notably, if you disconnect
1939  * the device-under-test, khubd will wait block forever waiting for the
1940  * ioctl to complete ... so that usb_disconnect() can abort the pending
1941  * urbs and then call usbtest_disconnect().  To abort a test, you're best
1942  * off just killing the userspace task and waiting for it to exit.
1943  */
1944
1945 static int
1946 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
1947 {
1948         struct usbtest_dev      *dev = usb_get_intfdata(intf);
1949         struct usb_device       *udev = testdev_to_usbdev(dev);
1950         struct usbtest_param    *param = buf;
1951         int                     retval = -EOPNOTSUPP;
1952         struct urb              *urb;
1953         struct scatterlist      *sg;
1954         struct usb_sg_request   req;
1955         struct timeval          start;
1956         unsigned                i;
1957
1958         /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */
1959
1960         pattern = mod_pattern;
1961
1962         if (code != USBTEST_REQUEST)
1963                 return -EOPNOTSUPP;
1964
1965         if (param->iterations <= 0)
1966                 return -EINVAL;
1967
1968         if (mutex_lock_interruptible(&dev->lock))
1969                 return -ERESTARTSYS;
1970
1971         /* FIXME: What if a system sleep starts while a test is running? */
1972
1973         /* some devices, like ez-usb default devices, need a non-default
1974          * altsetting to have any active endpoints.  some tests change
1975          * altsettings; force a default so most tests don't need to check.
1976          */
1977         if (dev->info->alt >= 0) {
1978                 int     res;
1979
1980                 if (intf->altsetting->desc.bInterfaceNumber) {
1981                         mutex_unlock(&dev->lock);
1982                         return -ENODEV;
1983                 }
1984                 res = set_altsetting(dev, dev->info->alt);
1985                 if (res) {
1986                         dev_err(&intf->dev,
1987                                         "set altsetting to %d failed, %d\n",
1988                                         dev->info->alt, res);
1989                         mutex_unlock(&dev->lock);
1990                         return res;
1991                 }
1992         }
1993
1994         /*
1995          * Just a bunch of test cases that every HCD is expected to handle.
1996          *
1997          * Some may need specific firmware, though it'd be good to have
1998          * one firmware image to handle all the test cases.
1999          *
2000          * FIXME add more tests!  cancel requests, verify the data, control
2001          * queueing, concurrent read+write threads, and so on.
2002          */
2003         do_gettimeofday(&start);
2004         switch (param->test_num) {
2005
2006         case 0:
2007                 dev_info(&intf->dev, "TEST 0:  NOP\n");
2008                 retval = 0;
2009                 break;
2010
2011         /* Simple non-queued bulk I/O tests */
2012         case 1:
2013                 if (dev->out_pipe == 0)
2014                         break;
2015                 dev_info(&intf->dev,
2016                                 "TEST 1:  write %d bytes %u times\n",
2017                                 param->length, param->iterations);
2018                 urb = simple_alloc_urb(udev, dev->out_pipe, param->length);
2019                 if (!urb) {
2020                         retval = -ENOMEM;
2021                         break;
2022                 }
2023                 /* FIRMWARE:  bulk sink (maybe accepts short writes) */
2024                 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1");
2025                 simple_free_urb(urb);
2026                 break;
2027         case 2:
2028                 if (dev->in_pipe == 0)
2029                         break;
2030                 dev_info(&intf->dev,
2031                                 "TEST 2:  read %d bytes %u times\n",
2032                                 param->length, param->iterations);
2033                 urb = simple_alloc_urb(udev, dev->in_pipe, param->length);
2034                 if (!urb) {
2035                         retval = -ENOMEM;
2036                         break;
2037                 }
2038                 /* FIRMWARE:  bulk source (maybe generates short writes) */
2039                 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2");
2040                 simple_free_urb(urb);
2041                 break;
2042         case 3:
2043                 if (dev->out_pipe == 0 || param->vary == 0)
2044                         break;
2045                 dev_info(&intf->dev,
2046                                 "TEST 3:  write/%d 0..%d bytes %u times\n",
2047                                 param->vary, param->length, param->iterations);
2048                 urb = simple_alloc_urb(udev, dev->out_pipe, param->length);
2049                 if (!urb) {
2050                         retval = -ENOMEM;
2051                         break;
2052                 }
2053                 /* FIRMWARE:  bulk sink (maybe accepts short writes) */
2054                 retval = simple_io(dev, urb, param->iterations, param->vary,
2055                                         0, "test3");
2056                 simple_free_urb(urb);
2057                 break;
2058         case 4:
2059                 if (dev->in_pipe == 0 || param->vary == 0)
2060                         break;
2061                 dev_info(&intf->dev,
2062                                 "TEST 4:  read/%d 0..%d bytes %u times\n",
2063                                 param->vary, param->length, param->iterations);
2064                 urb = simple_alloc_urb(udev, dev->in_pipe, param->length);
2065                 if (!urb) {
2066                         retval = -ENOMEM;
2067                         break;
2068                 }
2069                 /* FIRMWARE:  bulk source (maybe generates short writes) */
2070                 retval = simple_io(dev, urb, param->iterations, param->vary,
2071                                         0, "test4");
2072                 simple_free_urb(urb);
2073                 break;
2074
2075         /* Queued bulk I/O tests */
2076         case 5:
2077                 if (dev->out_pipe == 0 || param->sglen == 0)
2078                         break;
2079                 dev_info(&intf->dev,
2080                         "TEST 5:  write %d sglists %d entries of %d bytes\n",
2081                                 param->iterations,
2082                                 param->sglen, param->length);
2083                 sg = alloc_sglist(param->sglen, param->length, 0);
2084                 if (!sg) {
2085                         retval = -ENOMEM;
2086                         break;
2087                 }
2088                 /* FIRMWARE:  bulk sink (maybe accepts short writes) */
2089                 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2090                                 &req, sg, param->sglen);
2091                 free_sglist(sg, param->sglen);
2092                 break;
2093
2094         case 6:
2095                 if (dev->in_pipe == 0 || param->sglen == 0)
2096                         break;
2097                 dev_info(&intf->dev,
2098                         "TEST 6:  read %d sglists %d entries of %d bytes\n",
2099                                 param->iterations,
2100                                 param->sglen, param->length);
2101                 sg = alloc_sglist(param->sglen, param->length, 0);
2102                 if (!sg) {
2103                         retval = -ENOMEM;
2104                         break;
2105                 }
2106                 /* FIRMWARE:  bulk source (maybe generates short writes) */
2107                 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2108                                 &req, sg, param->sglen);
2109                 free_sglist(sg, param->sglen);
2110                 break;
2111         case 7:
2112                 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0)
2113                         break;
2114                 dev_info(&intf->dev,
2115                         "TEST 7:  write/%d %d sglists %d entries 0..%d bytes\n",
2116                                 param->vary, param->iterations,
2117                                 param->sglen, param->length);
2118                 sg = alloc_sglist(param->sglen, param->length, param->vary);
2119                 if (!sg) {
2120                         retval = -ENOMEM;
2121                         break;
2122                 }
2123                 /* FIRMWARE:  bulk sink (maybe accepts short writes) */
2124                 retval = perform_sglist(dev, param->iterations, dev->out_pipe,
2125                                 &req, sg, param->sglen);
2126                 free_sglist(sg, param->sglen);
2127                 break;
2128         case 8:
2129                 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0)
2130                         break;
2131                 dev_info(&intf->dev,
2132                         "TEST 8:  read/%d %d sglists %d entries 0..%d bytes\n",
2133                                 param->vary, param->iterations,
2134                                 param->sglen, param->length);
2135                 sg = alloc_sglist(param->sglen, param->length, param->vary);
2136                 if (!sg) {
2137                         retval = -ENOMEM;
2138                         break;
2139                 }
2140                 /* FIRMWARE:  bulk source (maybe generates short writes) */
2141                 retval = perform_sglist(dev, param->iterations, dev->in_pipe,
2142                                 &req, sg, param->sglen);
2143                 free_sglist(sg, param->sglen);
2144                 break;
2145
2146         /* non-queued sanity tests for control (chapter 9 subset) */
2147         case 9:
2148                 retval = 0;
2149                 dev_info(&intf->dev,
2150                         "TEST 9:  ch9 (subset) control tests, %d times\n",
2151                                 param->iterations);
2152                 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2153                         retval = ch9_postconfig(dev);
2154                 if (retval)
2155                         dev_err(&intf->dev, "ch9 subset failed, "
2156                                         "iterations left %d\n", i);
2157                 break;
2158
2159         /* queued control messaging */
2160         case 10:
2161                 retval = 0;
2162                 dev_info(&intf->dev,
2163                                 "TEST 10:  queue %d control calls, %d times\n",
2164                                 param->sglen,
2165                                 param->iterations);
2166                 retval = test_ctrl_queue(dev, param);
2167                 break;
2168
2169         /* simple non-queued unlinks (ring with one urb) */
2170         case 11:
2171                 if (dev->in_pipe == 0 || !param->length)
2172                         break;
2173                 retval = 0;
2174                 dev_info(&intf->dev, "TEST 11:  unlink %d reads of %d\n",
2175                                 param->iterations, param->length);
2176                 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2177                         retval = unlink_simple(dev, dev->in_pipe,
2178                                                 param->length);
2179                 if (retval)
2180                         dev_err(&intf->dev, "unlink reads failed %d, "
2181                                 "iterations left %d\n", retval, i);
2182                 break;
2183         case 12:
2184                 if (dev->out_pipe == 0 || !param->length)
2185                         break;
2186                 retval = 0;
2187                 dev_info(&intf->dev, "TEST 12:  unlink %d writes of %d\n",
2188                                 param->iterations, param->length);
2189                 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2190                         retval = unlink_simple(dev, dev->out_pipe,
2191                                                 param->length);
2192                 if (retval)
2193                         dev_err(&intf->dev, "unlink writes failed %d, "
2194                                 "iterations left %d\n", retval, i);
2195                 break;
2196
2197         /* ep halt tests */
2198         case 13:
2199                 if (dev->out_pipe == 0 && dev->in_pipe == 0)
2200                         break;
2201                 retval = 0;
2202                 dev_info(&intf->dev, "TEST 13:  set/clear %d halts\n",
2203                                 param->iterations);
2204                 for (i = param->iterations; retval == 0 && i--; /* NOP */)
2205                         retval = halt_simple(dev);
2206
2207                 if (retval)
2208                         ERROR(dev, "halts failed, iterations left %d\n", i);
2209                 break;
2210
2211         /* control write tests */
2212         case 14:
2213                 if (!dev->info->ctrl_out)
2214                         break;
2215                 dev_info(&intf->dev, "TEST 14:  %d ep0out, %d..%d vary %d\n",
2216                                 param->iterations,
2217                                 realworld ? 1 : 0, param->length,
2218                                 param->vary);
2219                 retval = ctrl_out(dev, param->iterations,
2220                                 param->length, param->vary, 0);
2221                 break;
2222
2223         /* iso write tests */
2224         case 15:
2225                 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2226                         break;
2227                 dev_info(&intf->dev,
2228                         "TEST 15:  write %d iso, %d entries of %d bytes\n",
2229                                 param->iterations,
2230                                 param->sglen, param->length);
2231                 /* FIRMWARE:  iso sink */
2232                 retval = test_iso_queue(dev, param,
2233                                 dev->out_iso_pipe, dev->iso_out, 0);
2234                 break;
2235
2236         /* iso read tests */
2237         case 16:
2238                 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2239                         break;
2240                 dev_info(&intf->dev,
2241                         "TEST 16:  read %d iso, %d entries of %d bytes\n",
2242                                 param->iterations,
2243                                 param->sglen, param->length);
2244                 /* FIRMWARE:  iso source */
2245                 retval = test_iso_queue(dev, param,
2246                                 dev->in_iso_pipe, dev->iso_in, 0);
2247                 break;
2248
2249         /* FIXME scatterlist cancel (needs helper thread) */
2250
2251         /* Tests for bulk I/O using DMA mapping by core and odd address */
2252         case 17:
2253                 if (dev->out_pipe == 0)
2254                         break;
2255                 dev_info(&intf->dev,
2256                         "TEST 17:  write odd addr %d bytes %u times core map\n",
2257                         param->length, param->iterations);
2258
2259                 retval = test_unaligned_bulk(
2260                                 dev, dev->out_pipe,
2261                                 param->length, param->iterations,
2262                                 0, "test17");
2263                 break;
2264
2265         case 18:
2266                 if (dev->in_pipe == 0)
2267                         break;
2268                 dev_info(&intf->dev,
2269                         "TEST 18:  read odd addr %d bytes %u times core map\n",
2270                         param->length, param->iterations);
2271
2272                 retval = test_unaligned_bulk(
2273                                 dev, dev->in_pipe,
2274                                 param->length, param->iterations,
2275                                 0, "test18");
2276                 break;
2277
2278         /* Tests for bulk I/O using premapped coherent buffer and odd address */
2279         case 19:
2280                 if (dev->out_pipe == 0)
2281                         break;
2282                 dev_info(&intf->dev,
2283                         "TEST 19:  write odd addr %d bytes %u times premapped\n",
2284                         param->length, param->iterations);
2285
2286                 retval = test_unaligned_bulk(
2287                                 dev, dev->out_pipe,
2288                                 param->length, param->iterations,
2289                                 URB_NO_TRANSFER_DMA_MAP, "test19");
2290                 break;
2291
2292         case 20:
2293                 if (dev->in_pipe == 0)
2294                         break;
2295                 dev_info(&intf->dev,
2296                         "TEST 20:  read odd addr %d bytes %u times premapped\n",
2297                         param->length, param->iterations);
2298
2299                 retval = test_unaligned_bulk(
2300                                 dev, dev->in_pipe,
2301                                 param->length, param->iterations,
2302                                 URB_NO_TRANSFER_DMA_MAP, "test20");
2303                 break;
2304
2305         /* control write tests with unaligned buffer */
2306         case 21:
2307                 if (!dev->info->ctrl_out)
2308                         break;
2309                 dev_info(&intf->dev,
2310                                 "TEST 21:  %d ep0out odd addr, %d..%d vary %d\n",
2311                                 param->iterations,
2312                                 realworld ? 1 : 0, param->length,
2313                                 param->vary);
2314                 retval = ctrl_out(dev, param->iterations,
2315                                 param->length, param->vary, 1);
2316                 break;
2317
2318         /* unaligned iso tests */
2319         case 22:
2320                 if (dev->out_iso_pipe == 0 || param->sglen == 0)
2321                         break;
2322                 dev_info(&intf->dev,
2323                         "TEST 22:  write %d iso odd, %d entries of %d bytes\n",
2324                                 param->iterations,
2325                                 param->sglen, param->length);
2326                 retval = test_iso_queue(dev, param,
2327                                 dev->out_iso_pipe, dev->iso_out, 1);
2328                 break;
2329
2330         case 23:
2331                 if (dev->in_iso_pipe == 0 || param->sglen == 0)
2332                         break;
2333                 dev_info(&intf->dev,
2334                         "TEST 23:  read %d iso odd, %d entries of %d bytes\n",
2335                                 param->iterations,
2336                                 param->sglen, param->length);
2337                 retval = test_iso_queue(dev, param,
2338                                 dev->in_iso_pipe, dev->iso_in, 1);
2339                 break;
2340
2341         /* unlink URBs from a bulk-OUT queue */
2342         case 24:
2343                 if (dev->out_pipe == 0 || !param->length || param->sglen < 4)
2344                         break;
2345                 retval = 0;
2346                 dev_info(&intf->dev, "TEST 24:  unlink from %d queues of "
2347                                 "%d %d-byte writes\n",
2348                                 param->iterations, param->sglen, param->length);
2349                 for (i = param->iterations; retval == 0 && i > 0; --i) {
2350                         retval = unlink_queued(dev, dev->out_pipe,
2351                                                 param->sglen, param->length);
2352                         if (retval) {
2353                                 dev_err(&intf->dev,
2354                                         "unlink queued writes failed %d, "
2355                                         "iterations left %d\n", retval, i);
2356                                 break;
2357                         }
2358                 }
2359                 break;
2360
2361         }
2362         do_gettimeofday(&param->duration);
2363         param->duration.tv_sec -= start.tv_sec;
2364         param->duration.tv_usec -= start.tv_usec;
2365         if (param->duration.tv_usec < 0) {
2366                 param->duration.tv_usec += 1000 * 1000;
2367                 param->duration.tv_sec -= 1;
2368         }
2369         mutex_unlock(&dev->lock);
2370         return retval;
2371 }
2372
2373 /*-------------------------------------------------------------------------*/
2374
2375 static unsigned force_interrupt;
2376 module_param(force_interrupt, uint, 0);
2377 MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt");
2378
2379 #ifdef  GENERIC
2380 static unsigned short vendor;
2381 module_param(vendor, ushort, 0);
2382 MODULE_PARM_DESC(vendor, "vendor code (from usb-if)");
2383
2384 static unsigned short product;
2385 module_param(product, ushort, 0);
2386 MODULE_PARM_DESC(product, "product code (from vendor)");
2387 #endif
2388
2389 static int
2390 usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
2391 {
2392         struct usb_device       *udev;
2393         struct usbtest_dev      *dev;
2394         struct usbtest_info     *info;
2395         char                    *rtest, *wtest;
2396         char                    *irtest, *iwtest;
2397
2398         udev = interface_to_usbdev(intf);
2399
2400 #ifdef  GENERIC
2401         /* specify devices by module parameters? */
2402         if (id->match_flags == 0) {
2403                 /* vendor match required, product match optional */
2404                 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor)
2405                         return -ENODEV;
2406                 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product)
2407                         return -ENODEV;
2408                 dev_info(&intf->dev, "matched module params, "
2409                                         "vend=0x%04x prod=0x%04x\n",
2410                                 le16_to_cpu(udev->descriptor.idVendor),
2411                                 le16_to_cpu(udev->descriptor.idProduct));
2412         }
2413 #endif
2414
2415         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2416         if (!dev)
2417                 return -ENOMEM;
2418         info = (struct usbtest_info *) id->driver_info;
2419         dev->info = info;
2420         mutex_init(&dev->lock);
2421
2422         dev->intf = intf;
2423
2424         /* cacheline-aligned scratch for i/o */
2425         dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL);
2426         if (dev->buf == NULL) {
2427                 kfree(dev);
2428                 return -ENOMEM;
2429         }
2430
2431         /* NOTE this doesn't yet test the handful of difference that are
2432          * visible with high speed interrupts:  bigger maxpacket (1K) and
2433          * "high bandwidth" modes (up to 3 packets/uframe).
2434          */
2435         rtest = wtest = "";
2436         irtest = iwtest = "";
2437         if (force_interrupt || udev->speed == USB_SPEED_LOW) {
2438                 if (info->ep_in) {
2439                         dev->in_pipe = usb_rcvintpipe(udev, info->ep_in);
2440                         rtest = " intr-in";
2441                 }
2442                 if (info->ep_out) {
2443                         dev->out_pipe = usb_sndintpipe(udev, info->ep_out);
2444                         wtest = " intr-out";
2445                 }
2446         } else {
2447                 if (override_alt >= 0 || info->autoconf) {
2448                         int status;
2449
2450                         status = get_endpoints(dev, intf);
2451                         if (status < 0) {
2452                                 WARNING(dev, "couldn't get endpoints, %d\n",
2453                                                 status);
2454                                 kfree(dev->buf);
2455                                 kfree(dev);
2456                                 return status;
2457                         }
2458                         /* may find bulk or ISO pipes */
2459                 } else {
2460                         if (info->ep_in)
2461                                 dev->in_pipe = usb_rcvbulkpipe(udev,
2462                                                         info->ep_in);
2463                         if (info->ep_out)
2464                                 dev->out_pipe = usb_sndbulkpipe(udev,
2465                                                         info->ep_out);
2466                 }
2467                 if (dev->in_pipe)
2468                         rtest = " bulk-in";
2469                 if (dev->out_pipe)
2470                         wtest = " bulk-out";
2471                 if (dev->in_iso_pipe)
2472                         irtest = " iso-in";
2473                 if (dev->out_iso_pipe)
2474                         iwtest = " iso-out";
2475         }
2476
2477         usb_set_intfdata(intf, dev);
2478         dev_info(&intf->dev, "%s\n", info->name);
2479         dev_info(&intf->dev, "%s {control%s%s%s%s%s} tests%s\n",
2480                         usb_speed_string(udev->speed),
2481                         info->ctrl_out ? " in/out" : "",
2482                         rtest, wtest,
2483                         irtest, iwtest,
2484                         info->alt >= 0 ? " (+alt)" : "");
2485         return 0;
2486 }
2487
2488 static int usbtest_suspend(struct usb_interface *intf, pm_message_t message)
2489 {
2490         return 0;
2491 }
2492
2493 static int usbtest_resume(struct usb_interface *intf)
2494 {
2495         return 0;
2496 }
2497
2498
2499 static void usbtest_disconnect(struct usb_interface *intf)
2500 {
2501         struct usbtest_dev      *dev = usb_get_intfdata(intf);
2502
2503         usb_set_intfdata(intf, NULL);
2504         dev_dbg(&intf->dev, "disconnect\n");
2505         kfree(dev);
2506 }
2507
2508 /* Basic testing only needs a device that can source or sink bulk traffic.
2509  * Any device can test control transfers (default with GENERIC binding).
2510  *
2511  * Several entries work with the default EP0 implementation that's built
2512  * into EZ-USB chips.  There's a default vendor ID which can be overridden
2513  * by (very) small config EEPROMS, but otherwise all these devices act
2514  * identically until firmware is loaded:  only EP0 works.  It turns out
2515  * to be easy to make other endpoints work, without modifying that EP0
2516  * behavior.  For now, we expect that kind of firmware.
2517  */
2518
2519 /* an21xx or fx versions of ez-usb */
2520 static struct usbtest_info ez1_info = {
2521         .name           = "EZ-USB device",
2522         .ep_in          = 2,
2523         .ep_out         = 2,
2524         .alt            = 1,
2525 };
2526
2527 /* fx2 version of ez-usb */
2528 static struct usbtest_info ez2_info = {
2529         .name           = "FX2 device",
2530         .ep_in          = 6,
2531         .ep_out         = 2,
2532         .alt            = 1,
2533 };
2534
2535 /* ezusb family device with dedicated usb test firmware,
2536  */
2537 static struct usbtest_info fw_info = {
2538         .name           = "usb test device",
2539         .ep_in          = 2,
2540         .ep_out         = 2,
2541         .alt            = 1,
2542         .autoconf       = 1,            /* iso and ctrl_out need autoconf */
2543         .ctrl_out       = 1,
2544         .iso            = 1,            /* iso_ep's are #8 in/out */
2545 };
2546
2547 /* peripheral running Linux and 'zero.c' test firmware, or
2548  * its user-mode cousin. different versions of this use
2549  * different hardware with the same vendor/product codes.
2550  * host side MUST rely on the endpoint descriptors.
2551  */
2552 static struct usbtest_info gz_info = {
2553         .name           = "Linux gadget zero",
2554         .autoconf       = 1,
2555         .ctrl_out       = 1,
2556         .iso            = 1,
2557         .alt            = 0,
2558 };
2559
2560 static struct usbtest_info um_info = {
2561         .name           = "Linux user mode test driver",
2562         .autoconf       = 1,
2563         .alt            = -1,
2564 };
2565
2566 static struct usbtest_info um2_info = {
2567         .name           = "Linux user mode ISO test driver",
2568         .autoconf       = 1,
2569         .iso            = 1,
2570         .alt            = -1,
2571 };
2572
2573 #ifdef IBOT2
2574 /* this is a nice source of high speed bulk data;
2575  * uses an FX2, with firmware provided in the device
2576  */
2577 static struct usbtest_info ibot2_info = {
2578         .name           = "iBOT2 webcam",
2579         .ep_in          = 2,
2580         .alt            = -1,
2581 };
2582 #endif
2583
2584 #ifdef GENERIC
2585 /* we can use any device to test control traffic */
2586 static struct usbtest_info generic_info = {
2587         .name           = "Generic USB device",
2588         .alt            = -1,
2589 };
2590 #endif
2591
2592
2593 static const struct usb_device_id id_table[] = {
2594
2595         /*-------------------------------------------------------------*/
2596
2597         /* EZ-USB devices which download firmware to replace (or in our
2598          * case augment) the default device implementation.
2599          */
2600
2601         /* generic EZ-USB FX controller */
2602         { USB_DEVICE(0x0547, 0x2235),
2603                 .driver_info = (unsigned long) &ez1_info,
2604         },
2605
2606         /* CY3671 development board with EZ-USB FX */
2607         { USB_DEVICE(0x0547, 0x0080),
2608                 .driver_info = (unsigned long) &ez1_info,
2609         },
2610
2611         /* generic EZ-USB FX2 controller (or development board) */
2612         { USB_DEVICE(0x04b4, 0x8613),
2613                 .driver_info = (unsigned long) &ez2_info,
2614         },
2615
2616         /* re-enumerated usb test device firmware */
2617         { USB_DEVICE(0xfff0, 0xfff0),
2618                 .driver_info = (unsigned long) &fw_info,
2619         },
2620
2621         /* "Gadget Zero" firmware runs under Linux */
2622         { USB_DEVICE(0x0525, 0xa4a0),
2623                 .driver_info = (unsigned long) &gz_info,
2624         },
2625
2626         /* so does a user-mode variant */
2627         { USB_DEVICE(0x0525, 0xa4a4),
2628                 .driver_info = (unsigned long) &um_info,
2629         },
2630
2631         /* ... and a user-mode variant that talks iso */
2632         { USB_DEVICE(0x0525, 0xa4a3),
2633                 .driver_info = (unsigned long) &um2_info,
2634         },
2635
2636 #ifdef KEYSPAN_19Qi
2637         /* Keyspan 19qi uses an21xx (original EZ-USB) */
2638         /* this does not coexist with the real Keyspan 19qi driver! */
2639         { USB_DEVICE(0x06cd, 0x010b),
2640                 .driver_info = (unsigned long) &ez1_info,
2641         },
2642 #endif
2643
2644         /*-------------------------------------------------------------*/
2645
2646 #ifdef IBOT2
2647         /* iBOT2 makes a nice source of high speed bulk-in data */
2648         /* this does not coexist with a real iBOT2 driver! */
2649         { USB_DEVICE(0x0b62, 0x0059),
2650                 .driver_info = (unsigned long) &ibot2_info,
2651         },
2652 #endif
2653
2654         /*-------------------------------------------------------------*/
2655
2656 #ifdef GENERIC
2657         /* module params can specify devices to use for control tests */
2658         { .driver_info = (unsigned long) &generic_info, },
2659 #endif
2660
2661         /*-------------------------------------------------------------*/
2662
2663         { }
2664 };
2665 MODULE_DEVICE_TABLE(usb, id_table);
2666
2667 static struct usb_driver usbtest_driver = {
2668         .name =         "usbtest",
2669         .id_table =     id_table,
2670         .probe =        usbtest_probe,
2671         .unlocked_ioctl = usbtest_ioctl,
2672         .disconnect =   usbtest_disconnect,
2673         .suspend =      usbtest_suspend,
2674         .resume =       usbtest_resume,
2675 };
2676
2677 /*-------------------------------------------------------------------------*/
2678
2679 static int __init usbtest_init(void)
2680 {
2681 #ifdef GENERIC
2682         if (vendor)
2683                 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product);
2684 #endif
2685         return usb_register(&usbtest_driver);
2686 }
2687 module_init(usbtest_init);
2688
2689 static void __exit usbtest_exit(void)
2690 {
2691         usb_deregister(&usbtest_driver);
2692 }
2693 module_exit(usbtest_exit);
2694
2695 MODULE_DESCRIPTION("USB Core/HCD Testing Driver");
2696 MODULE_LICENSE("GPL");
2697