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 /* FIXME make these public somewhere; usbdevfs.h? */ 17 struct usbtest_param { 18 /* inputs */ 19 unsigned test_num; /* 0..(TEST_CASES-1) */ 20 unsigned iterations; 21 unsigned length; 22 unsigned vary; 23 unsigned sglen; 24 25 /* outputs */ 26 struct timeval duration; 27 }; 28 #define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param) 29 30 /*-------------------------------------------------------------------------*/ 31 32 #define GENERIC /* let probe() bind using module params */ 33 34 /* Some devices that can be used for testing will have "real" drivers. 35 * Entries for those need to be enabled here by hand, after disabling 36 * that "real" driver. 37 */ 38 //#define IBOT2 /* grab iBOT2 webcams */ 39 //#define KEYSPAN_19Qi /* grab un-renumerated serial adapter */ 40 41 /*-------------------------------------------------------------------------*/ 42 43 struct usbtest_info { 44 const char *name; 45 u8 ep_in; /* bulk/intr source */ 46 u8 ep_out; /* bulk/intr sink */ 47 unsigned autoconf:1; 48 unsigned ctrl_out:1; 49 unsigned iso:1; /* try iso in/out */ 50 int alt; 51 }; 52 53 /* this is accessed only through usbfs ioctl calls. 54 * one ioctl to issue a test ... one lock per device. 55 * tests create other threads if they need them. 56 * urbs and buffers are allocated dynamically, 57 * and data generated deterministically. 58 */ 59 struct usbtest_dev { 60 struct usb_interface *intf; 61 struct usbtest_info *info; 62 int in_pipe; 63 int out_pipe; 64 int in_iso_pipe; 65 int out_iso_pipe; 66 struct usb_endpoint_descriptor *iso_in, *iso_out; 67 struct mutex lock; 68 69 #define TBUF_SIZE 256 70 u8 *buf; 71 }; 72 73 static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test) 74 { 75 return interface_to_usbdev(test->intf); 76 } 77 78 /* set up all urbs so they can be used with either bulk or interrupt */ 79 #define INTERRUPT_RATE 1 /* msec/transfer */ 80 81 #define ERROR(tdev, fmt, args...) \ 82 dev_err(&(tdev)->intf->dev , fmt , ## args) 83 #define WARNING(tdev, fmt, args...) \ 84 dev_warn(&(tdev)->intf->dev , fmt , ## args) 85 86 /*-------------------------------------------------------------------------*/ 87 88 static int 89 get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf) 90 { 91 int tmp; 92 struct usb_host_interface *alt; 93 struct usb_host_endpoint *in, *out; 94 struct usb_host_endpoint *iso_in, *iso_out; 95 struct usb_device *udev; 96 97 for (tmp = 0; tmp < intf->num_altsetting; tmp++) { 98 unsigned ep; 99 100 in = out = NULL; 101 iso_in = iso_out = NULL; 102 alt = intf->altsetting + tmp; 103 104 /* take the first altsetting with in-bulk + out-bulk; 105 * ignore other endpoints and altsetttings. 106 */ 107 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { 108 struct usb_host_endpoint *e; 109 110 e = alt->endpoint + ep; 111 switch (e->desc.bmAttributes) { 112 case USB_ENDPOINT_XFER_BULK: 113 break; 114 case USB_ENDPOINT_XFER_ISOC: 115 if (dev->info->iso) 116 goto try_iso; 117 /* FALLTHROUGH */ 118 default: 119 continue; 120 } 121 if (usb_endpoint_dir_in(&e->desc)) { 122 if (!in) 123 in = e; 124 } else { 125 if (!out) 126 out = e; 127 } 128 continue; 129 try_iso: 130 if (usb_endpoint_dir_in(&e->desc)) { 131 if (!iso_in) 132 iso_in = e; 133 } else { 134 if (!iso_out) 135 iso_out = e; 136 } 137 } 138 if ((in && out) || iso_in || iso_out) 139 goto found; 140 } 141 return -EINVAL; 142 143 found: 144 udev = testdev_to_usbdev(dev); 145 if (alt->desc.bAlternateSetting != 0) { 146 tmp = usb_set_interface(udev, 147 alt->desc.bInterfaceNumber, 148 alt->desc.bAlternateSetting); 149 if (tmp < 0) 150 return tmp; 151 } 152 153 if (in) { 154 dev->in_pipe = usb_rcvbulkpipe(udev, 155 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 156 dev->out_pipe = usb_sndbulkpipe(udev, 157 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 158 } 159 if (iso_in) { 160 dev->iso_in = &iso_in->desc; 161 dev->in_iso_pipe = usb_rcvisocpipe(udev, 162 iso_in->desc.bEndpointAddress 163 & USB_ENDPOINT_NUMBER_MASK); 164 } 165 166 if (iso_out) { 167 dev->iso_out = &iso_out->desc; 168 dev->out_iso_pipe = usb_sndisocpipe(udev, 169 iso_out->desc.bEndpointAddress 170 & USB_ENDPOINT_NUMBER_MASK); 171 } 172 return 0; 173 } 174 175 /*-------------------------------------------------------------------------*/ 176 177 /* Support for testing basic non-queued I/O streams. 178 * 179 * These just package urbs as requests that can be easily canceled. 180 * Each urb's data buffer is dynamically allocated; callers can fill 181 * them with non-zero test data (or test for it) when appropriate. 182 */ 183 184 static void simple_callback(struct urb *urb) 185 { 186 complete(urb->context); 187 } 188 189 static struct urb *simple_alloc_urb( 190 struct usb_device *udev, 191 int pipe, 192 unsigned long bytes 193 ) 194 { 195 struct urb *urb; 196 197 urb = usb_alloc_urb(0, GFP_KERNEL); 198 if (!urb) 199 return urb; 200 usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, simple_callback, NULL); 201 urb->interval = (udev->speed == USB_SPEED_HIGH) 202 ? (INTERRUPT_RATE << 3) 203 : INTERRUPT_RATE; 204 urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; 205 if (usb_pipein(pipe)) 206 urb->transfer_flags |= URB_SHORT_NOT_OK; 207 urb->transfer_buffer = usb_alloc_coherent(udev, bytes, GFP_KERNEL, 208 &urb->transfer_dma); 209 if (!urb->transfer_buffer) { 210 usb_free_urb(urb); 211 urb = NULL; 212 } else 213 memset(urb->transfer_buffer, 0, bytes); 214 return urb; 215 } 216 217 static unsigned pattern; 218 static unsigned mod_pattern; 219 module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR); 220 MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)"); 221 222 static inline void simple_fill_buf(struct urb *urb) 223 { 224 unsigned i; 225 u8 *buf = urb->transfer_buffer; 226 unsigned len = urb->transfer_buffer_length; 227 228 switch (pattern) { 229 default: 230 /* FALLTHROUGH */ 231 case 0: 232 memset(buf, 0, len); 233 break; 234 case 1: /* mod63 */ 235 for (i = 0; i < len; i++) 236 *buf++ = (u8) (i % 63); 237 break; 238 } 239 } 240 241 static inline int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb) 242 { 243 unsigned i; 244 u8 expected; 245 u8 *buf = urb->transfer_buffer; 246 unsigned len = urb->actual_length; 247 248 for (i = 0; i < len; i++, buf++) { 249 switch (pattern) { 250 /* all-zeroes has no synchronization issues */ 251 case 0: 252 expected = 0; 253 break; 254 /* mod63 stays in sync with short-terminated transfers, 255 * or otherwise when host and gadget agree on how large 256 * each usb transfer request should be. resync is done 257 * with set_interface or set_config. 258 */ 259 case 1: /* mod63 */ 260 expected = i % 63; 261 break; 262 /* always fail unsupported patterns */ 263 default: 264 expected = !*buf; 265 break; 266 } 267 if (*buf == expected) 268 continue; 269 ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected); 270 return -EINVAL; 271 } 272 return 0; 273 } 274 275 static void simple_free_urb(struct urb *urb) 276 { 277 usb_free_coherent(urb->dev, urb->transfer_buffer_length, 278 urb->transfer_buffer, urb->transfer_dma); 279 usb_free_urb(urb); 280 } 281 282 static int simple_io( 283 struct usbtest_dev *tdev, 284 struct urb *urb, 285 int iterations, 286 int vary, 287 int expected, 288 const char *label 289 ) 290 { 291 struct usb_device *udev = urb->dev; 292 int max = urb->transfer_buffer_length; 293 struct completion completion; 294 int retval = 0; 295 296 urb->context = &completion; 297 while (retval == 0 && iterations-- > 0) { 298 init_completion(&completion); 299 if (usb_pipeout(urb->pipe)) 300 simple_fill_buf(urb); 301 retval = usb_submit_urb(urb, GFP_KERNEL); 302 if (retval != 0) 303 break; 304 305 /* NOTE: no timeouts; can't be broken out of by interrupt */ 306 wait_for_completion(&completion); 307 retval = urb->status; 308 urb->dev = udev; 309 if (retval == 0 && usb_pipein(urb->pipe)) 310 retval = simple_check_buf(tdev, urb); 311 312 if (vary) { 313 int len = urb->transfer_buffer_length; 314 315 len += vary; 316 len %= max; 317 if (len == 0) 318 len = (vary < max) ? vary : max; 319 urb->transfer_buffer_length = len; 320 } 321 322 /* FIXME if endpoint halted, clear halt (and log) */ 323 } 324 urb->transfer_buffer_length = max; 325 326 if (expected != retval) 327 dev_err(&udev->dev, 328 "%s failed, iterations left %d, status %d (not %d)\n", 329 label, iterations, retval, expected); 330 return retval; 331 } 332 333 334 /*-------------------------------------------------------------------------*/ 335 336 /* We use scatterlist primitives to test queued I/O. 337 * Yes, this also tests the scatterlist primitives. 338 */ 339 340 static void free_sglist(struct scatterlist *sg, int nents) 341 { 342 unsigned i; 343 344 if (!sg) 345 return; 346 for (i = 0; i < nents; i++) { 347 if (!sg_page(&sg[i])) 348 continue; 349 kfree(sg_virt(&sg[i])); 350 } 351 kfree(sg); 352 } 353 354 static struct scatterlist * 355 alloc_sglist(int nents, int max, int vary) 356 { 357 struct scatterlist *sg; 358 unsigned i; 359 unsigned size = max; 360 361 sg = kmalloc(nents * sizeof *sg, GFP_KERNEL); 362 if (!sg) 363 return NULL; 364 sg_init_table(sg, nents); 365 366 for (i = 0; i < nents; i++) { 367 char *buf; 368 unsigned j; 369 370 buf = kzalloc(size, GFP_KERNEL); 371 if (!buf) { 372 free_sglist(sg, i); 373 return NULL; 374 } 375 376 /* kmalloc pages are always physically contiguous! */ 377 sg_set_buf(&sg[i], buf, size); 378 379 switch (pattern) { 380 case 0: 381 /* already zeroed */ 382 break; 383 case 1: 384 for (j = 0; j < size; j++) 385 *buf++ = (u8) (j % 63); 386 break; 387 } 388 389 if (vary) { 390 size += vary; 391 size %= max; 392 if (size == 0) 393 size = (vary < max) ? vary : max; 394 } 395 } 396 397 return sg; 398 } 399 400 static int perform_sglist( 401 struct usbtest_dev *tdev, 402 unsigned iterations, 403 int pipe, 404 struct usb_sg_request *req, 405 struct scatterlist *sg, 406 int nents 407 ) 408 { 409 struct usb_device *udev = testdev_to_usbdev(tdev); 410 int retval = 0; 411 412 while (retval == 0 && iterations-- > 0) { 413 retval = usb_sg_init(req, udev, pipe, 414 (udev->speed == USB_SPEED_HIGH) 415 ? (INTERRUPT_RATE << 3) 416 : INTERRUPT_RATE, 417 sg, nents, 0, GFP_KERNEL); 418 419 if (retval) 420 break; 421 usb_sg_wait(req); 422 retval = req->status; 423 424 /* FIXME check resulting data pattern */ 425 426 /* FIXME if endpoint halted, clear halt (and log) */ 427 } 428 429 /* FIXME for unlink or fault handling tests, don't report 430 * failure if retval is as we expected ... 431 */ 432 if (retval) 433 ERROR(tdev, "perform_sglist failed, " 434 "iterations left %d, status %d\n", 435 iterations, retval); 436 return retval; 437 } 438 439 440 /*-------------------------------------------------------------------------*/ 441 442 /* unqueued control message testing 443 * 444 * there's a nice set of device functional requirements in chapter 9 of the 445 * usb 2.0 spec, which we can apply to ANY device, even ones that don't use 446 * special test firmware. 447 * 448 * we know the device is configured (or suspended) by the time it's visible 449 * through usbfs. we can't change that, so we won't test enumeration (which 450 * worked 'well enough' to get here, this time), power management (ditto), 451 * or remote wakeup (which needs human interaction). 452 */ 453 454 static unsigned realworld = 1; 455 module_param(realworld, uint, 0); 456 MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance"); 457 458 static int get_altsetting(struct usbtest_dev *dev) 459 { 460 struct usb_interface *iface = dev->intf; 461 struct usb_device *udev = interface_to_usbdev(iface); 462 int retval; 463 464 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 465 USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE, 466 0, iface->altsetting[0].desc.bInterfaceNumber, 467 dev->buf, 1, USB_CTRL_GET_TIMEOUT); 468 switch (retval) { 469 case 1: 470 return dev->buf[0]; 471 case 0: 472 retval = -ERANGE; 473 /* FALLTHROUGH */ 474 default: 475 return retval; 476 } 477 } 478 479 static int set_altsetting(struct usbtest_dev *dev, int alternate) 480 { 481 struct usb_interface *iface = dev->intf; 482 struct usb_device *udev; 483 484 if (alternate < 0 || alternate >= 256) 485 return -EINVAL; 486 487 udev = interface_to_usbdev(iface); 488 return usb_set_interface(udev, 489 iface->altsetting[0].desc.bInterfaceNumber, 490 alternate); 491 } 492 493 static int is_good_config(struct usbtest_dev *tdev, int len) 494 { 495 struct usb_config_descriptor *config; 496 497 if (len < sizeof *config) 498 return 0; 499 config = (struct usb_config_descriptor *) tdev->buf; 500 501 switch (config->bDescriptorType) { 502 case USB_DT_CONFIG: 503 case USB_DT_OTHER_SPEED_CONFIG: 504 if (config->bLength != 9) { 505 ERROR(tdev, "bogus config descriptor length\n"); 506 return 0; 507 } 508 /* this bit 'must be 1' but often isn't */ 509 if (!realworld && !(config->bmAttributes & 0x80)) { 510 ERROR(tdev, "high bit of config attributes not set\n"); 511 return 0; 512 } 513 if (config->bmAttributes & 0x1f) { /* reserved == 0 */ 514 ERROR(tdev, "reserved config bits set\n"); 515 return 0; 516 } 517 break; 518 default: 519 return 0; 520 } 521 522 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */ 523 return 1; 524 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */ 525 return 1; 526 ERROR(tdev, "bogus config descriptor read size\n"); 527 return 0; 528 } 529 530 /* sanity test for standard requests working with usb_control_mesg() and some 531 * of the utility functions which use it. 532 * 533 * this doesn't test how endpoint halts behave or data toggles get set, since 534 * we won't do I/O to bulk/interrupt endpoints here (which is how to change 535 * halt or toggle). toggle testing is impractical without support from hcds. 536 * 537 * this avoids failing devices linux would normally work with, by not testing 538 * config/altsetting operations for devices that only support their defaults. 539 * such devices rarely support those needless operations. 540 * 541 * NOTE that since this is a sanity test, it's not examining boundary cases 542 * to see if usbcore, hcd, and device all behave right. such testing would 543 * involve varied read sizes and other operation sequences. 544 */ 545 static int ch9_postconfig(struct usbtest_dev *dev) 546 { 547 struct usb_interface *iface = dev->intf; 548 struct usb_device *udev = interface_to_usbdev(iface); 549 int i, alt, retval; 550 551 /* [9.2.3] if there's more than one altsetting, we need to be able to 552 * set and get each one. mostly trusts the descriptors from usbcore. 553 */ 554 for (i = 0; i < iface->num_altsetting; i++) { 555 556 /* 9.2.3 constrains the range here */ 557 alt = iface->altsetting[i].desc.bAlternateSetting; 558 if (alt < 0 || alt >= iface->num_altsetting) { 559 dev_err(&iface->dev, 560 "invalid alt [%d].bAltSetting = %d\n", 561 i, alt); 562 } 563 564 /* [real world] get/set unimplemented if there's only one */ 565 if (realworld && iface->num_altsetting == 1) 566 continue; 567 568 /* [9.4.10] set_interface */ 569 retval = set_altsetting(dev, alt); 570 if (retval) { 571 dev_err(&iface->dev, "can't set_interface = %d, %d\n", 572 alt, retval); 573 return retval; 574 } 575 576 /* [9.4.4] get_interface always works */ 577 retval = get_altsetting(dev); 578 if (retval != alt) { 579 dev_err(&iface->dev, "get alt should be %d, was %d\n", 580 alt, retval); 581 return (retval < 0) ? retval : -EDOM; 582 } 583 584 } 585 586 /* [real world] get_config unimplemented if there's only one */ 587 if (!realworld || udev->descriptor.bNumConfigurations != 1) { 588 int expected = udev->actconfig->desc.bConfigurationValue; 589 590 /* [9.4.2] get_configuration always works 591 * ... although some cheap devices (like one TI Hub I've got) 592 * won't return config descriptors except before set_config. 593 */ 594 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 595 USB_REQ_GET_CONFIGURATION, 596 USB_DIR_IN | USB_RECIP_DEVICE, 597 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT); 598 if (retval != 1 || dev->buf[0] != expected) { 599 dev_err(&iface->dev, "get config --> %d %d (1 %d)\n", 600 retval, dev->buf[0], expected); 601 return (retval < 0) ? retval : -EDOM; 602 } 603 } 604 605 /* there's always [9.4.3] a device descriptor [9.6.1] */ 606 retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0, 607 dev->buf, sizeof udev->descriptor); 608 if (retval != sizeof udev->descriptor) { 609 dev_err(&iface->dev, "dev descriptor --> %d\n", retval); 610 return (retval < 0) ? retval : -EDOM; 611 } 612 613 /* there's always [9.4.3] at least one config descriptor [9.6.3] */ 614 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) { 615 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i, 616 dev->buf, TBUF_SIZE); 617 if (!is_good_config(dev, retval)) { 618 dev_err(&iface->dev, 619 "config [%d] descriptor --> %d\n", 620 i, retval); 621 return (retval < 0) ? retval : -EDOM; 622 } 623 624 /* FIXME cross-checking udev->config[i] to make sure usbcore 625 * parsed it right (etc) would be good testing paranoia 626 */ 627 } 628 629 /* and sometimes [9.2.6.6] speed dependent descriptors */ 630 if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) { 631 struct usb_qualifier_descriptor *d = NULL; 632 633 /* device qualifier [9.6.2] */ 634 retval = usb_get_descriptor(udev, 635 USB_DT_DEVICE_QUALIFIER, 0, dev->buf, 636 sizeof(struct usb_qualifier_descriptor)); 637 if (retval == -EPIPE) { 638 if (udev->speed == USB_SPEED_HIGH) { 639 dev_err(&iface->dev, 640 "hs dev qualifier --> %d\n", 641 retval); 642 return (retval < 0) ? retval : -EDOM; 643 } 644 /* usb2.0 but not high-speed capable; fine */ 645 } else if (retval != sizeof(struct usb_qualifier_descriptor)) { 646 dev_err(&iface->dev, "dev qualifier --> %d\n", retval); 647 return (retval < 0) ? retval : -EDOM; 648 } else 649 d = (struct usb_qualifier_descriptor *) dev->buf; 650 651 /* might not have [9.6.2] any other-speed configs [9.6.4] */ 652 if (d) { 653 unsigned max = d->bNumConfigurations; 654 for (i = 0; i < max; i++) { 655 retval = usb_get_descriptor(udev, 656 USB_DT_OTHER_SPEED_CONFIG, i, 657 dev->buf, TBUF_SIZE); 658 if (!is_good_config(dev, retval)) { 659 dev_err(&iface->dev, 660 "other speed config --> %d\n", 661 retval); 662 return (retval < 0) ? retval : -EDOM; 663 } 664 } 665 } 666 } 667 /* FIXME fetch strings from at least the device descriptor */ 668 669 /* [9.4.5] get_status always works */ 670 retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf); 671 if (retval != 2) { 672 dev_err(&iface->dev, "get dev status --> %d\n", retval); 673 return (retval < 0) ? retval : -EDOM; 674 } 675 676 /* FIXME configuration.bmAttributes says if we could try to set/clear 677 * the device's remote wakeup feature ... if we can, test that here 678 */ 679 680 retval = usb_get_status(udev, USB_RECIP_INTERFACE, 681 iface->altsetting[0].desc.bInterfaceNumber, dev->buf); 682 if (retval != 2) { 683 dev_err(&iface->dev, "get interface status --> %d\n", retval); 684 return (retval < 0) ? retval : -EDOM; 685 } 686 /* FIXME get status for each endpoint in the interface */ 687 688 return 0; 689 } 690 691 /*-------------------------------------------------------------------------*/ 692 693 /* use ch9 requests to test whether: 694 * (a) queues work for control, keeping N subtests queued and 695 * active (auto-resubmit) for M loops through the queue. 696 * (b) protocol stalls (control-only) will autorecover. 697 * it's not like bulk/intr; no halt clearing. 698 * (c) short control reads are reported and handled. 699 * (d) queues are always processed in-order 700 */ 701 702 struct ctrl_ctx { 703 spinlock_t lock; 704 struct usbtest_dev *dev; 705 struct completion complete; 706 unsigned count; 707 unsigned pending; 708 int status; 709 struct urb **urb; 710 struct usbtest_param *param; 711 int last; 712 }; 713 714 #define NUM_SUBCASES 15 /* how many test subcases here? */ 715 716 struct subcase { 717 struct usb_ctrlrequest setup; 718 int number; 719 int expected; 720 }; 721 722 static void ctrl_complete(struct urb *urb) 723 { 724 struct ctrl_ctx *ctx = urb->context; 725 struct usb_ctrlrequest *reqp; 726 struct subcase *subcase; 727 int status = urb->status; 728 729 reqp = (struct usb_ctrlrequest *)urb->setup_packet; 730 subcase = container_of(reqp, struct subcase, setup); 731 732 spin_lock(&ctx->lock); 733 ctx->count--; 734 ctx->pending--; 735 736 /* queue must transfer and complete in fifo order, unless 737 * usb_unlink_urb() is used to unlink something not at the 738 * physical queue head (not tested). 739 */ 740 if (subcase->number > 0) { 741 if ((subcase->number - ctx->last) != 1) { 742 ERROR(ctx->dev, 743 "subcase %d completed out of order, last %d\n", 744 subcase->number, ctx->last); 745 status = -EDOM; 746 ctx->last = subcase->number; 747 goto error; 748 } 749 } 750 ctx->last = subcase->number; 751 752 /* succeed or fault in only one way? */ 753 if (status == subcase->expected) 754 status = 0; 755 756 /* async unlink for cleanup? */ 757 else if (status != -ECONNRESET) { 758 759 /* some faults are allowed, not required */ 760 if (subcase->expected > 0 && ( 761 ((status == -subcase->expected /* happened */ 762 || status == 0)))) /* didn't */ 763 status = 0; 764 /* sometimes more than one fault is allowed */ 765 else if (subcase->number == 12 && status == -EPIPE) 766 status = 0; 767 else 768 ERROR(ctx->dev, "subtest %d error, status %d\n", 769 subcase->number, status); 770 } 771 772 /* unexpected status codes mean errors; ideally, in hardware */ 773 if (status) { 774 error: 775 if (ctx->status == 0) { 776 int i; 777 778 ctx->status = status; 779 ERROR(ctx->dev, "control queue %02x.%02x, err %d, " 780 "%d left, subcase %d, len %d/%d\n", 781 reqp->bRequestType, reqp->bRequest, 782 status, ctx->count, subcase->number, 783 urb->actual_length, 784 urb->transfer_buffer_length); 785 786 /* FIXME this "unlink everything" exit route should 787 * be a separate test case. 788 */ 789 790 /* unlink whatever's still pending */ 791 for (i = 1; i < ctx->param->sglen; i++) { 792 struct urb *u = ctx->urb[ 793 (i + subcase->number) 794 % ctx->param->sglen]; 795 796 if (u == urb || !u->dev) 797 continue; 798 spin_unlock(&ctx->lock); 799 status = usb_unlink_urb(u); 800 spin_lock(&ctx->lock); 801 switch (status) { 802 case -EINPROGRESS: 803 case -EBUSY: 804 case -EIDRM: 805 continue; 806 default: 807 ERROR(ctx->dev, "urb unlink --> %d\n", 808 status); 809 } 810 } 811 status = ctx->status; 812 } 813 } 814 815 /* resubmit if we need to, else mark this as done */ 816 if ((status == 0) && (ctx->pending < ctx->count)) { 817 status = usb_submit_urb(urb, GFP_ATOMIC); 818 if (status != 0) { 819 ERROR(ctx->dev, 820 "can't resubmit ctrl %02x.%02x, err %d\n", 821 reqp->bRequestType, reqp->bRequest, status); 822 urb->dev = NULL; 823 } else 824 ctx->pending++; 825 } else 826 urb->dev = NULL; 827 828 /* signal completion when nothing's queued */ 829 if (ctx->pending == 0) 830 complete(&ctx->complete); 831 spin_unlock(&ctx->lock); 832 } 833 834 static int 835 test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param) 836 { 837 struct usb_device *udev = testdev_to_usbdev(dev); 838 struct urb **urb; 839 struct ctrl_ctx context; 840 int i; 841 842 spin_lock_init(&context.lock); 843 context.dev = dev; 844 init_completion(&context.complete); 845 context.count = param->sglen * param->iterations; 846 context.pending = 0; 847 context.status = -ENOMEM; 848 context.param = param; 849 context.last = -1; 850 851 /* allocate and init the urbs we'll queue. 852 * as with bulk/intr sglists, sglen is the queue depth; it also 853 * controls which subtests run (more tests than sglen) or rerun. 854 */ 855 urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL); 856 if (!urb) 857 return -ENOMEM; 858 for (i = 0; i < param->sglen; i++) { 859 int pipe = usb_rcvctrlpipe(udev, 0); 860 unsigned len; 861 struct urb *u; 862 struct usb_ctrlrequest req; 863 struct subcase *reqp; 864 865 /* sign of this variable means: 866 * -: tested code must return this (negative) error code 867 * +: tested code may return this (negative too) error code 868 */ 869 int expected = 0; 870 871 /* requests here are mostly expected to succeed on any 872 * device, but some are chosen to trigger protocol stalls 873 * or short reads. 874 */ 875 memset(&req, 0, sizeof req); 876 req.bRequest = USB_REQ_GET_DESCRIPTOR; 877 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE; 878 879 switch (i % NUM_SUBCASES) { 880 case 0: /* get device descriptor */ 881 req.wValue = cpu_to_le16(USB_DT_DEVICE << 8); 882 len = sizeof(struct usb_device_descriptor); 883 break; 884 case 1: /* get first config descriptor (only) */ 885 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 886 len = sizeof(struct usb_config_descriptor); 887 break; 888 case 2: /* get altsetting (OFTEN STALLS) */ 889 req.bRequest = USB_REQ_GET_INTERFACE; 890 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE; 891 /* index = 0 means first interface */ 892 len = 1; 893 expected = EPIPE; 894 break; 895 case 3: /* get interface status */ 896 req.bRequest = USB_REQ_GET_STATUS; 897 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE; 898 /* interface 0 */ 899 len = 2; 900 break; 901 case 4: /* get device status */ 902 req.bRequest = USB_REQ_GET_STATUS; 903 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE; 904 len = 2; 905 break; 906 case 5: /* get device qualifier (MAY STALL) */ 907 req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8); 908 len = sizeof(struct usb_qualifier_descriptor); 909 if (udev->speed != USB_SPEED_HIGH) 910 expected = EPIPE; 911 break; 912 case 6: /* get first config descriptor, plus interface */ 913 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 914 len = sizeof(struct usb_config_descriptor); 915 len += sizeof(struct usb_interface_descriptor); 916 break; 917 case 7: /* get interface descriptor (ALWAYS STALLS) */ 918 req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8); 919 /* interface == 0 */ 920 len = sizeof(struct usb_interface_descriptor); 921 expected = -EPIPE; 922 break; 923 /* NOTE: two consecutive stalls in the queue here. 924 * that tests fault recovery a bit more aggressively. */ 925 case 8: /* clear endpoint halt (MAY STALL) */ 926 req.bRequest = USB_REQ_CLEAR_FEATURE; 927 req.bRequestType = USB_RECIP_ENDPOINT; 928 /* wValue 0 == ep halt */ 929 /* wIndex 0 == ep0 (shouldn't halt!) */ 930 len = 0; 931 pipe = usb_sndctrlpipe(udev, 0); 932 expected = EPIPE; 933 break; 934 case 9: /* get endpoint status */ 935 req.bRequest = USB_REQ_GET_STATUS; 936 req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT; 937 /* endpoint 0 */ 938 len = 2; 939 break; 940 case 10: /* trigger short read (EREMOTEIO) */ 941 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 942 len = 1024; 943 expected = -EREMOTEIO; 944 break; 945 /* NOTE: two consecutive _different_ faults in the queue. */ 946 case 11: /* get endpoint descriptor (ALWAYS STALLS) */ 947 req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8); 948 /* endpoint == 0 */ 949 len = sizeof(struct usb_interface_descriptor); 950 expected = EPIPE; 951 break; 952 /* NOTE: sometimes even a third fault in the queue! */ 953 case 12: /* get string 0 descriptor (MAY STALL) */ 954 req.wValue = cpu_to_le16(USB_DT_STRING << 8); 955 /* string == 0, for language IDs */ 956 len = sizeof(struct usb_interface_descriptor); 957 /* may succeed when > 4 languages */ 958 expected = EREMOTEIO; /* or EPIPE, if no strings */ 959 break; 960 case 13: /* short read, resembling case 10 */ 961 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 962 /* last data packet "should" be DATA1, not DATA0 */ 963 len = 1024 - udev->descriptor.bMaxPacketSize0; 964 expected = -EREMOTEIO; 965 break; 966 case 14: /* short read; try to fill the last packet */ 967 req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0); 968 /* device descriptor size == 18 bytes */ 969 len = udev->descriptor.bMaxPacketSize0; 970 switch (len) { 971 case 8: 972 len = 24; 973 break; 974 case 16: 975 len = 32; 976 break; 977 } 978 expected = -EREMOTEIO; 979 break; 980 default: 981 ERROR(dev, "bogus number of ctrl queue testcases!\n"); 982 context.status = -EINVAL; 983 goto cleanup; 984 } 985 req.wLength = cpu_to_le16(len); 986 urb[i] = u = simple_alloc_urb(udev, pipe, len); 987 if (!u) 988 goto cleanup; 989 990 reqp = kmalloc(sizeof *reqp, GFP_KERNEL); 991 if (!reqp) 992 goto cleanup; 993 reqp->setup = req; 994 reqp->number = i % NUM_SUBCASES; 995 reqp->expected = expected; 996 u->setup_packet = (char *) &reqp->setup; 997 998 u->context = &context; 999 u->complete = ctrl_complete; 1000 } 1001 1002 /* queue the urbs */ 1003 context.urb = urb; 1004 spin_lock_irq(&context.lock); 1005 for (i = 0; i < param->sglen; i++) { 1006 context.status = usb_submit_urb(urb[i], GFP_ATOMIC); 1007 if (context.status != 0) { 1008 ERROR(dev, "can't submit urb[%d], status %d\n", 1009 i, context.status); 1010 context.count = context.pending; 1011 break; 1012 } 1013 context.pending++; 1014 } 1015 spin_unlock_irq(&context.lock); 1016 1017 /* FIXME set timer and time out; provide a disconnect hook */ 1018 1019 /* wait for the last one to complete */ 1020 if (context.pending > 0) 1021 wait_for_completion(&context.complete); 1022 1023 cleanup: 1024 for (i = 0; i < param->sglen; i++) { 1025 if (!urb[i]) 1026 continue; 1027 urb[i]->dev = udev; 1028 kfree(urb[i]->setup_packet); 1029 simple_free_urb(urb[i]); 1030 } 1031 kfree(urb); 1032 return context.status; 1033 } 1034 #undef NUM_SUBCASES 1035 1036 1037 /*-------------------------------------------------------------------------*/ 1038 1039 static void unlink1_callback(struct urb *urb) 1040 { 1041 int status = urb->status; 1042 1043 /* we "know" -EPIPE (stall) never happens */ 1044 if (!status) 1045 status = usb_submit_urb(urb, GFP_ATOMIC); 1046 if (status) { 1047 urb->status = status; 1048 complete(urb->context); 1049 } 1050 } 1051 1052 static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async) 1053 { 1054 struct urb *urb; 1055 struct completion completion; 1056 int retval = 0; 1057 1058 init_completion(&completion); 1059 urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size); 1060 if (!urb) 1061 return -ENOMEM; 1062 urb->context = &completion; 1063 urb->complete = unlink1_callback; 1064 1065 /* keep the endpoint busy. there are lots of hc/hcd-internal 1066 * states, and testing should get to all of them over time. 1067 * 1068 * FIXME want additional tests for when endpoint is STALLing 1069 * due to errors, or is just NAKing requests. 1070 */ 1071 retval = usb_submit_urb(urb, GFP_KERNEL); 1072 if (retval != 0) { 1073 dev_err(&dev->intf->dev, "submit fail %d\n", retval); 1074 return retval; 1075 } 1076 1077 /* unlinking that should always work. variable delay tests more 1078 * hcd states and code paths, even with little other system load. 1079 */ 1080 msleep(jiffies % (2 * INTERRUPT_RATE)); 1081 if (async) { 1082 while (!completion_done(&completion)) { 1083 retval = usb_unlink_urb(urb); 1084 1085 switch (retval) { 1086 case -EBUSY: 1087 case -EIDRM: 1088 /* we can't unlink urbs while they're completing 1089 * or if they've completed, and we haven't 1090 * resubmitted. "normal" drivers would prevent 1091 * resubmission, but since we're testing unlink 1092 * paths, we can't. 1093 */ 1094 ERROR(dev, "unlink retry\n"); 1095 continue; 1096 case 0: 1097 case -EINPROGRESS: 1098 break; 1099 1100 default: 1101 dev_err(&dev->intf->dev, 1102 "unlink fail %d\n", retval); 1103 return retval; 1104 } 1105 1106 break; 1107 } 1108 } else 1109 usb_kill_urb(urb); 1110 1111 wait_for_completion(&completion); 1112 retval = urb->status; 1113 simple_free_urb(urb); 1114 1115 if (async) 1116 return (retval == -ECONNRESET) ? 0 : retval - 1000; 1117 else 1118 return (retval == -ENOENT || retval == -EPERM) ? 1119 0 : retval - 2000; 1120 } 1121 1122 static int unlink_simple(struct usbtest_dev *dev, int pipe, int len) 1123 { 1124 int retval = 0; 1125 1126 /* test sync and async paths */ 1127 retval = unlink1(dev, pipe, len, 1); 1128 if (!retval) 1129 retval = unlink1(dev, pipe, len, 0); 1130 return retval; 1131 } 1132 1133 /*-------------------------------------------------------------------------*/ 1134 1135 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) 1136 { 1137 int retval; 1138 u16 status; 1139 1140 /* shouldn't look or act halted */ 1141 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status); 1142 if (retval < 0) { 1143 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n", 1144 ep, retval); 1145 return retval; 1146 } 1147 if (status != 0) { 1148 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status); 1149 return -EINVAL; 1150 } 1151 retval = simple_io(tdev, urb, 1, 0, 0, __func__); 1152 if (retval != 0) 1153 return -EINVAL; 1154 return 0; 1155 } 1156 1157 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) 1158 { 1159 int retval; 1160 u16 status; 1161 1162 /* should look and act halted */ 1163 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status); 1164 if (retval < 0) { 1165 ERROR(tdev, "ep %02x couldn't get halt status, %d\n", 1166 ep, retval); 1167 return retval; 1168 } 1169 le16_to_cpus(&status); 1170 if (status != 1) { 1171 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status); 1172 return -EINVAL; 1173 } 1174 retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__); 1175 if (retval != -EPIPE) 1176 return -EINVAL; 1177 retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted"); 1178 if (retval != -EPIPE) 1179 return -EINVAL; 1180 return 0; 1181 } 1182 1183 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb) 1184 { 1185 int retval; 1186 1187 /* shouldn't look or act halted now */ 1188 retval = verify_not_halted(tdev, ep, urb); 1189 if (retval < 0) 1190 return retval; 1191 1192 /* set halt (protocol test only), verify it worked */ 1193 retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0), 1194 USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT, 1195 USB_ENDPOINT_HALT, ep, 1196 NULL, 0, USB_CTRL_SET_TIMEOUT); 1197 if (retval < 0) { 1198 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval); 1199 return retval; 1200 } 1201 retval = verify_halted(tdev, ep, urb); 1202 if (retval < 0) 1203 return retval; 1204 1205 /* clear halt (tests API + protocol), verify it worked */ 1206 retval = usb_clear_halt(urb->dev, urb->pipe); 1207 if (retval < 0) { 1208 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval); 1209 return retval; 1210 } 1211 retval = verify_not_halted(tdev, ep, urb); 1212 if (retval < 0) 1213 return retval; 1214 1215 /* NOTE: could also verify SET_INTERFACE clear halts ... */ 1216 1217 return 0; 1218 } 1219 1220 static int halt_simple(struct usbtest_dev *dev) 1221 { 1222 int ep; 1223 int retval = 0; 1224 struct urb *urb; 1225 1226 urb = simple_alloc_urb(testdev_to_usbdev(dev), 0, 512); 1227 if (urb == NULL) 1228 return -ENOMEM; 1229 1230 if (dev->in_pipe) { 1231 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN; 1232 urb->pipe = dev->in_pipe; 1233 retval = test_halt(dev, ep, urb); 1234 if (retval < 0) 1235 goto done; 1236 } 1237 1238 if (dev->out_pipe) { 1239 ep = usb_pipeendpoint(dev->out_pipe); 1240 urb->pipe = dev->out_pipe; 1241 retval = test_halt(dev, ep, urb); 1242 } 1243 done: 1244 simple_free_urb(urb); 1245 return retval; 1246 } 1247 1248 /*-------------------------------------------------------------------------*/ 1249 1250 /* Control OUT tests use the vendor control requests from Intel's 1251 * USB 2.0 compliance test device: write a buffer, read it back. 1252 * 1253 * Intel's spec only _requires_ that it work for one packet, which 1254 * is pretty weak. Some HCDs place limits here; most devices will 1255 * need to be able to handle more than one OUT data packet. We'll 1256 * try whatever we're told to try. 1257 */ 1258 static int ctrl_out(struct usbtest_dev *dev, 1259 unsigned count, unsigned length, unsigned vary) 1260 { 1261 unsigned i, j, len; 1262 int retval; 1263 u8 *buf; 1264 char *what = "?"; 1265 struct usb_device *udev; 1266 1267 if (length < 1 || length > 0xffff || vary >= length) 1268 return -EINVAL; 1269 1270 buf = kmalloc(length, GFP_KERNEL); 1271 if (!buf) 1272 return -ENOMEM; 1273 1274 udev = testdev_to_usbdev(dev); 1275 len = length; 1276 retval = 0; 1277 1278 /* NOTE: hardware might well act differently if we pushed it 1279 * with lots back-to-back queued requests. 1280 */ 1281 for (i = 0; i < count; i++) { 1282 /* write patterned data */ 1283 for (j = 0; j < len; j++) 1284 buf[j] = i + j; 1285 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 1286 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR, 1287 0, 0, buf, len, USB_CTRL_SET_TIMEOUT); 1288 if (retval != len) { 1289 what = "write"; 1290 if (retval >= 0) { 1291 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n", 1292 retval, len); 1293 retval = -EBADMSG; 1294 } 1295 break; 1296 } 1297 1298 /* read it back -- assuming nothing intervened!! */ 1299 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 1300 0x5c, USB_DIR_IN|USB_TYPE_VENDOR, 1301 0, 0, buf, len, USB_CTRL_GET_TIMEOUT); 1302 if (retval != len) { 1303 what = "read"; 1304 if (retval >= 0) { 1305 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n", 1306 retval, len); 1307 retval = -EBADMSG; 1308 } 1309 break; 1310 } 1311 1312 /* fail if we can't verify */ 1313 for (j = 0; j < len; j++) { 1314 if (buf[j] != (u8) (i + j)) { 1315 ERROR(dev, "ctrl_out, byte %d is %d not %d\n", 1316 j, buf[j], (u8) i + j); 1317 retval = -EBADMSG; 1318 break; 1319 } 1320 } 1321 if (retval < 0) { 1322 what = "verify"; 1323 break; 1324 } 1325 1326 len += vary; 1327 1328 /* [real world] the "zero bytes IN" case isn't really used. 1329 * hardware can easily trip up in this weird case, since its 1330 * status stage is IN, not OUT like other ep0in transfers. 1331 */ 1332 if (len > length) 1333 len = realworld ? 1 : 0; 1334 } 1335 1336 if (retval < 0) 1337 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n", 1338 what, retval, i); 1339 1340 kfree(buf); 1341 return retval; 1342 } 1343 1344 /*-------------------------------------------------------------------------*/ 1345 1346 /* ISO tests ... mimics common usage 1347 * - buffer length is split into N packets (mostly maxpacket sized) 1348 * - multi-buffers according to sglen 1349 */ 1350 1351 struct iso_context { 1352 unsigned count; 1353 unsigned pending; 1354 spinlock_t lock; 1355 struct completion done; 1356 int submit_error; 1357 unsigned long errors; 1358 unsigned long packet_count; 1359 struct usbtest_dev *dev; 1360 }; 1361 1362 static void iso_callback(struct urb *urb) 1363 { 1364 struct iso_context *ctx = urb->context; 1365 1366 spin_lock(&ctx->lock); 1367 ctx->count--; 1368 1369 ctx->packet_count += urb->number_of_packets; 1370 if (urb->error_count > 0) 1371 ctx->errors += urb->error_count; 1372 else if (urb->status != 0) 1373 ctx->errors += urb->number_of_packets; 1374 else if (urb->actual_length != urb->transfer_buffer_length) 1375 ctx->errors++; 1376 1377 if (urb->status == 0 && ctx->count > (ctx->pending - 1) 1378 && !ctx->submit_error) { 1379 int status = usb_submit_urb(urb, GFP_ATOMIC); 1380 switch (status) { 1381 case 0: 1382 goto done; 1383 default: 1384 dev_err(&ctx->dev->intf->dev, 1385 "iso resubmit err %d\n", 1386 status); 1387 /* FALLTHROUGH */ 1388 case -ENODEV: /* disconnected */ 1389 case -ESHUTDOWN: /* endpoint disabled */ 1390 ctx->submit_error = 1; 1391 break; 1392 } 1393 } 1394 1395 ctx->pending--; 1396 if (ctx->pending == 0) { 1397 if (ctx->errors) 1398 dev_err(&ctx->dev->intf->dev, 1399 "iso test, %lu errors out of %lu\n", 1400 ctx->errors, ctx->packet_count); 1401 complete(&ctx->done); 1402 } 1403 done: 1404 spin_unlock(&ctx->lock); 1405 } 1406 1407 static struct urb *iso_alloc_urb( 1408 struct usb_device *udev, 1409 int pipe, 1410 struct usb_endpoint_descriptor *desc, 1411 long bytes 1412 ) 1413 { 1414 struct urb *urb; 1415 unsigned i, maxp, packets; 1416 1417 if (bytes < 0 || !desc) 1418 return NULL; 1419 maxp = 0x7ff & le16_to_cpu(desc->wMaxPacketSize); 1420 maxp *= 1 + (0x3 & (le16_to_cpu(desc->wMaxPacketSize) >> 11)); 1421 packets = DIV_ROUND_UP(bytes, maxp); 1422 1423 urb = usb_alloc_urb(packets, GFP_KERNEL); 1424 if (!urb) 1425 return urb; 1426 urb->dev = udev; 1427 urb->pipe = pipe; 1428 1429 urb->number_of_packets = packets; 1430 urb->transfer_buffer_length = bytes; 1431 urb->transfer_buffer = usb_alloc_coherent(udev, bytes, GFP_KERNEL, 1432 &urb->transfer_dma); 1433 if (!urb->transfer_buffer) { 1434 usb_free_urb(urb); 1435 return NULL; 1436 } 1437 memset(urb->transfer_buffer, 0, bytes); 1438 for (i = 0; i < packets; i++) { 1439 /* here, only the last packet will be short */ 1440 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp); 1441 bytes -= urb->iso_frame_desc[i].length; 1442 1443 urb->iso_frame_desc[i].offset = maxp * i; 1444 } 1445 1446 urb->complete = iso_callback; 1447 /* urb->context = SET BY CALLER */ 1448 urb->interval = 1 << (desc->bInterval - 1); 1449 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 1450 return urb; 1451 } 1452 1453 static int 1454 test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param, 1455 int pipe, struct usb_endpoint_descriptor *desc) 1456 { 1457 struct iso_context context; 1458 struct usb_device *udev; 1459 unsigned i; 1460 unsigned long packets = 0; 1461 int status = 0; 1462 struct urb *urbs[10]; /* FIXME no limit */ 1463 1464 if (param->sglen > 10) 1465 return -EDOM; 1466 1467 memset(&context, 0, sizeof context); 1468 context.count = param->iterations * param->sglen; 1469 context.dev = dev; 1470 init_completion(&context.done); 1471 spin_lock_init(&context.lock); 1472 1473 memset(urbs, 0, sizeof urbs); 1474 udev = testdev_to_usbdev(dev); 1475 dev_info(&dev->intf->dev, 1476 "... iso period %d %sframes, wMaxPacket %04x\n", 1477 1 << (desc->bInterval - 1), 1478 (udev->speed == USB_SPEED_HIGH) ? "micro" : "", 1479 le16_to_cpu(desc->wMaxPacketSize)); 1480 1481 for (i = 0; i < param->sglen; i++) { 1482 urbs[i] = iso_alloc_urb(udev, pipe, desc, 1483 param->length); 1484 if (!urbs[i]) { 1485 status = -ENOMEM; 1486 goto fail; 1487 } 1488 packets += urbs[i]->number_of_packets; 1489 urbs[i]->context = &context; 1490 } 1491 packets *= param->iterations; 1492 dev_info(&dev->intf->dev, 1493 "... total %lu msec (%lu packets)\n", 1494 (packets * (1 << (desc->bInterval - 1))) 1495 / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1), 1496 packets); 1497 1498 spin_lock_irq(&context.lock); 1499 for (i = 0; i < param->sglen; i++) { 1500 ++context.pending; 1501 status = usb_submit_urb(urbs[i], GFP_ATOMIC); 1502 if (status < 0) { 1503 ERROR(dev, "submit iso[%d], error %d\n", i, status); 1504 if (i == 0) { 1505 spin_unlock_irq(&context.lock); 1506 goto fail; 1507 } 1508 1509 simple_free_urb(urbs[i]); 1510 urbs[i] = NULL; 1511 context.pending--; 1512 context.submit_error = 1; 1513 break; 1514 } 1515 } 1516 spin_unlock_irq(&context.lock); 1517 1518 wait_for_completion(&context.done); 1519 1520 for (i = 0; i < param->sglen; i++) { 1521 if (urbs[i]) 1522 simple_free_urb(urbs[i]); 1523 } 1524 /* 1525 * Isochronous transfers are expected to fail sometimes. As an 1526 * arbitrary limit, we will report an error if any submissions 1527 * fail or if the transfer failure rate is > 10%. 1528 */ 1529 if (status != 0) 1530 ; 1531 else if (context.submit_error) 1532 status = -EACCES; 1533 else if (context.errors > context.packet_count / 10) 1534 status = -EIO; 1535 return status; 1536 1537 fail: 1538 for (i = 0; i < param->sglen; i++) { 1539 if (urbs[i]) 1540 simple_free_urb(urbs[i]); 1541 } 1542 return status; 1543 } 1544 1545 /*-------------------------------------------------------------------------*/ 1546 1547 /* We only have this one interface to user space, through usbfs. 1548 * User mode code can scan usbfs to find N different devices (maybe on 1549 * different busses) to use when testing, and allocate one thread per 1550 * test. So discovery is simplified, and we have no device naming issues. 1551 * 1552 * Don't use these only as stress/load tests. Use them along with with 1553 * other USB bus activity: plugging, unplugging, mousing, mp3 playback, 1554 * video capture, and so on. Run different tests at different times, in 1555 * different sequences. Nothing here should interact with other devices, 1556 * except indirectly by consuming USB bandwidth and CPU resources for test 1557 * threads and request completion. But the only way to know that for sure 1558 * is to test when HC queues are in use by many devices. 1559 * 1560 * WARNING: Because usbfs grabs udev->dev.sem before calling this ioctl(), 1561 * it locks out usbcore in certain code paths. Notably, if you disconnect 1562 * the device-under-test, khubd will wait block forever waiting for the 1563 * ioctl to complete ... so that usb_disconnect() can abort the pending 1564 * urbs and then call usbtest_disconnect(). To abort a test, you're best 1565 * off just killing the userspace task and waiting for it to exit. 1566 */ 1567 1568 /* No BKL needed */ 1569 static int 1570 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf) 1571 { 1572 struct usbtest_dev *dev = usb_get_intfdata(intf); 1573 struct usb_device *udev = testdev_to_usbdev(dev); 1574 struct usbtest_param *param = buf; 1575 int retval = -EOPNOTSUPP; 1576 struct urb *urb; 1577 struct scatterlist *sg; 1578 struct usb_sg_request req; 1579 struct timeval start; 1580 unsigned i; 1581 1582 /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */ 1583 1584 pattern = mod_pattern; 1585 1586 if (code != USBTEST_REQUEST) 1587 return -EOPNOTSUPP; 1588 1589 if (param->iterations <= 0) 1590 return -EINVAL; 1591 1592 if (mutex_lock_interruptible(&dev->lock)) 1593 return -ERESTARTSYS; 1594 1595 /* FIXME: What if a system sleep starts while a test is running? */ 1596 1597 /* some devices, like ez-usb default devices, need a non-default 1598 * altsetting to have any active endpoints. some tests change 1599 * altsettings; force a default so most tests don't need to check. 1600 */ 1601 if (dev->info->alt >= 0) { 1602 int res; 1603 1604 if (intf->altsetting->desc.bInterfaceNumber) { 1605 mutex_unlock(&dev->lock); 1606 return -ENODEV; 1607 } 1608 res = set_altsetting(dev, dev->info->alt); 1609 if (res) { 1610 dev_err(&intf->dev, 1611 "set altsetting to %d failed, %d\n", 1612 dev->info->alt, res); 1613 mutex_unlock(&dev->lock); 1614 return res; 1615 } 1616 } 1617 1618 /* 1619 * Just a bunch of test cases that every HCD is expected to handle. 1620 * 1621 * Some may need specific firmware, though it'd be good to have 1622 * one firmware image to handle all the test cases. 1623 * 1624 * FIXME add more tests! cancel requests, verify the data, control 1625 * queueing, concurrent read+write threads, and so on. 1626 */ 1627 do_gettimeofday(&start); 1628 switch (param->test_num) { 1629 1630 case 0: 1631 dev_info(&intf->dev, "TEST 0: NOP\n"); 1632 retval = 0; 1633 break; 1634 1635 /* Simple non-queued bulk I/O tests */ 1636 case 1: 1637 if (dev->out_pipe == 0) 1638 break; 1639 dev_info(&intf->dev, 1640 "TEST 1: write %d bytes %u times\n", 1641 param->length, param->iterations); 1642 urb = simple_alloc_urb(udev, dev->out_pipe, param->length); 1643 if (!urb) { 1644 retval = -ENOMEM; 1645 break; 1646 } 1647 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 1648 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1"); 1649 simple_free_urb(urb); 1650 break; 1651 case 2: 1652 if (dev->in_pipe == 0) 1653 break; 1654 dev_info(&intf->dev, 1655 "TEST 2: read %d bytes %u times\n", 1656 param->length, param->iterations); 1657 urb = simple_alloc_urb(udev, dev->in_pipe, param->length); 1658 if (!urb) { 1659 retval = -ENOMEM; 1660 break; 1661 } 1662 /* FIRMWARE: bulk source (maybe generates short writes) */ 1663 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2"); 1664 simple_free_urb(urb); 1665 break; 1666 case 3: 1667 if (dev->out_pipe == 0 || param->vary == 0) 1668 break; 1669 dev_info(&intf->dev, 1670 "TEST 3: write/%d 0..%d bytes %u times\n", 1671 param->vary, param->length, param->iterations); 1672 urb = simple_alloc_urb(udev, dev->out_pipe, param->length); 1673 if (!urb) { 1674 retval = -ENOMEM; 1675 break; 1676 } 1677 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 1678 retval = simple_io(dev, urb, param->iterations, param->vary, 1679 0, "test3"); 1680 simple_free_urb(urb); 1681 break; 1682 case 4: 1683 if (dev->in_pipe == 0 || param->vary == 0) 1684 break; 1685 dev_info(&intf->dev, 1686 "TEST 4: read/%d 0..%d bytes %u times\n", 1687 param->vary, param->length, param->iterations); 1688 urb = simple_alloc_urb(udev, dev->in_pipe, param->length); 1689 if (!urb) { 1690 retval = -ENOMEM; 1691 break; 1692 } 1693 /* FIRMWARE: bulk source (maybe generates short writes) */ 1694 retval = simple_io(dev, urb, param->iterations, param->vary, 1695 0, "test4"); 1696 simple_free_urb(urb); 1697 break; 1698 1699 /* Queued bulk I/O tests */ 1700 case 5: 1701 if (dev->out_pipe == 0 || param->sglen == 0) 1702 break; 1703 dev_info(&intf->dev, 1704 "TEST 5: write %d sglists %d entries of %d bytes\n", 1705 param->iterations, 1706 param->sglen, param->length); 1707 sg = alloc_sglist(param->sglen, param->length, 0); 1708 if (!sg) { 1709 retval = -ENOMEM; 1710 break; 1711 } 1712 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 1713 retval = perform_sglist(dev, param->iterations, dev->out_pipe, 1714 &req, sg, param->sglen); 1715 free_sglist(sg, param->sglen); 1716 break; 1717 1718 case 6: 1719 if (dev->in_pipe == 0 || param->sglen == 0) 1720 break; 1721 dev_info(&intf->dev, 1722 "TEST 6: read %d sglists %d entries of %d bytes\n", 1723 param->iterations, 1724 param->sglen, param->length); 1725 sg = alloc_sglist(param->sglen, param->length, 0); 1726 if (!sg) { 1727 retval = -ENOMEM; 1728 break; 1729 } 1730 /* FIRMWARE: bulk source (maybe generates short writes) */ 1731 retval = perform_sglist(dev, param->iterations, dev->in_pipe, 1732 &req, sg, param->sglen); 1733 free_sglist(sg, param->sglen); 1734 break; 1735 case 7: 1736 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0) 1737 break; 1738 dev_info(&intf->dev, 1739 "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n", 1740 param->vary, param->iterations, 1741 param->sglen, param->length); 1742 sg = alloc_sglist(param->sglen, param->length, param->vary); 1743 if (!sg) { 1744 retval = -ENOMEM; 1745 break; 1746 } 1747 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 1748 retval = perform_sglist(dev, param->iterations, dev->out_pipe, 1749 &req, sg, param->sglen); 1750 free_sglist(sg, param->sglen); 1751 break; 1752 case 8: 1753 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0) 1754 break; 1755 dev_info(&intf->dev, 1756 "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n", 1757 param->vary, param->iterations, 1758 param->sglen, param->length); 1759 sg = alloc_sglist(param->sglen, param->length, param->vary); 1760 if (!sg) { 1761 retval = -ENOMEM; 1762 break; 1763 } 1764 /* FIRMWARE: bulk source (maybe generates short writes) */ 1765 retval = perform_sglist(dev, param->iterations, dev->in_pipe, 1766 &req, sg, param->sglen); 1767 free_sglist(sg, param->sglen); 1768 break; 1769 1770 /* non-queued sanity tests for control (chapter 9 subset) */ 1771 case 9: 1772 retval = 0; 1773 dev_info(&intf->dev, 1774 "TEST 9: ch9 (subset) control tests, %d times\n", 1775 param->iterations); 1776 for (i = param->iterations; retval == 0 && i--; /* NOP */) 1777 retval = ch9_postconfig(dev); 1778 if (retval) 1779 dev_err(&intf->dev, "ch9 subset failed, " 1780 "iterations left %d\n", i); 1781 break; 1782 1783 /* queued control messaging */ 1784 case 10: 1785 if (param->sglen == 0) 1786 break; 1787 retval = 0; 1788 dev_info(&intf->dev, 1789 "TEST 10: queue %d control calls, %d times\n", 1790 param->sglen, 1791 param->iterations); 1792 retval = test_ctrl_queue(dev, param); 1793 break; 1794 1795 /* simple non-queued unlinks (ring with one urb) */ 1796 case 11: 1797 if (dev->in_pipe == 0 || !param->length) 1798 break; 1799 retval = 0; 1800 dev_info(&intf->dev, "TEST 11: unlink %d reads of %d\n", 1801 param->iterations, param->length); 1802 for (i = param->iterations; retval == 0 && i--; /* NOP */) 1803 retval = unlink_simple(dev, dev->in_pipe, 1804 param->length); 1805 if (retval) 1806 dev_err(&intf->dev, "unlink reads failed %d, " 1807 "iterations left %d\n", retval, i); 1808 break; 1809 case 12: 1810 if (dev->out_pipe == 0 || !param->length) 1811 break; 1812 retval = 0; 1813 dev_info(&intf->dev, "TEST 12: unlink %d writes of %d\n", 1814 param->iterations, param->length); 1815 for (i = param->iterations; retval == 0 && i--; /* NOP */) 1816 retval = unlink_simple(dev, dev->out_pipe, 1817 param->length); 1818 if (retval) 1819 dev_err(&intf->dev, "unlink writes failed %d, " 1820 "iterations left %d\n", retval, i); 1821 break; 1822 1823 /* ep halt tests */ 1824 case 13: 1825 if (dev->out_pipe == 0 && dev->in_pipe == 0) 1826 break; 1827 retval = 0; 1828 dev_info(&intf->dev, "TEST 13: set/clear %d halts\n", 1829 param->iterations); 1830 for (i = param->iterations; retval == 0 && i--; /* NOP */) 1831 retval = halt_simple(dev); 1832 1833 if (retval) 1834 ERROR(dev, "halts failed, iterations left %d\n", i); 1835 break; 1836 1837 /* control write tests */ 1838 case 14: 1839 if (!dev->info->ctrl_out) 1840 break; 1841 dev_info(&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n", 1842 param->iterations, 1843 realworld ? 1 : 0, param->length, 1844 param->vary); 1845 retval = ctrl_out(dev, param->iterations, 1846 param->length, param->vary); 1847 break; 1848 1849 /* iso write tests */ 1850 case 15: 1851 if (dev->out_iso_pipe == 0 || param->sglen == 0) 1852 break; 1853 dev_info(&intf->dev, 1854 "TEST 15: write %d iso, %d entries of %d bytes\n", 1855 param->iterations, 1856 param->sglen, param->length); 1857 /* FIRMWARE: iso sink */ 1858 retval = test_iso_queue(dev, param, 1859 dev->out_iso_pipe, dev->iso_out); 1860 break; 1861 1862 /* iso read tests */ 1863 case 16: 1864 if (dev->in_iso_pipe == 0 || param->sglen == 0) 1865 break; 1866 dev_info(&intf->dev, 1867 "TEST 16: read %d iso, %d entries of %d bytes\n", 1868 param->iterations, 1869 param->sglen, param->length); 1870 /* FIRMWARE: iso source */ 1871 retval = test_iso_queue(dev, param, 1872 dev->in_iso_pipe, dev->iso_in); 1873 break; 1874 1875 /* FIXME unlink from queue (ring with N urbs) */ 1876 1877 /* FIXME scatterlist cancel (needs helper thread) */ 1878 1879 } 1880 do_gettimeofday(¶m->duration); 1881 param->duration.tv_sec -= start.tv_sec; 1882 param->duration.tv_usec -= start.tv_usec; 1883 if (param->duration.tv_usec < 0) { 1884 param->duration.tv_usec += 1000 * 1000; 1885 param->duration.tv_sec -= 1; 1886 } 1887 mutex_unlock(&dev->lock); 1888 return retval; 1889 } 1890 1891 /*-------------------------------------------------------------------------*/ 1892 1893 static unsigned force_interrupt; 1894 module_param(force_interrupt, uint, 0); 1895 MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt"); 1896 1897 #ifdef GENERIC 1898 static unsigned short vendor; 1899 module_param(vendor, ushort, 0); 1900 MODULE_PARM_DESC(vendor, "vendor code (from usb-if)"); 1901 1902 static unsigned short product; 1903 module_param(product, ushort, 0); 1904 MODULE_PARM_DESC(product, "product code (from vendor)"); 1905 #endif 1906 1907 static int 1908 usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id) 1909 { 1910 struct usb_device *udev; 1911 struct usbtest_dev *dev; 1912 struct usbtest_info *info; 1913 char *rtest, *wtest; 1914 char *irtest, *iwtest; 1915 1916 udev = interface_to_usbdev(intf); 1917 1918 #ifdef GENERIC 1919 /* specify devices by module parameters? */ 1920 if (id->match_flags == 0) { 1921 /* vendor match required, product match optional */ 1922 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor) 1923 return -ENODEV; 1924 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product) 1925 return -ENODEV; 1926 dev_info(&intf->dev, "matched module params, " 1927 "vend=0x%04x prod=0x%04x\n", 1928 le16_to_cpu(udev->descriptor.idVendor), 1929 le16_to_cpu(udev->descriptor.idProduct)); 1930 } 1931 #endif 1932 1933 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1934 if (!dev) 1935 return -ENOMEM; 1936 info = (struct usbtest_info *) id->driver_info; 1937 dev->info = info; 1938 mutex_init(&dev->lock); 1939 1940 dev->intf = intf; 1941 1942 /* cacheline-aligned scratch for i/o */ 1943 dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL); 1944 if (dev->buf == NULL) { 1945 kfree(dev); 1946 return -ENOMEM; 1947 } 1948 1949 /* NOTE this doesn't yet test the handful of difference that are 1950 * visible with high speed interrupts: bigger maxpacket (1K) and 1951 * "high bandwidth" modes (up to 3 packets/uframe). 1952 */ 1953 rtest = wtest = ""; 1954 irtest = iwtest = ""; 1955 if (force_interrupt || udev->speed == USB_SPEED_LOW) { 1956 if (info->ep_in) { 1957 dev->in_pipe = usb_rcvintpipe(udev, info->ep_in); 1958 rtest = " intr-in"; 1959 } 1960 if (info->ep_out) { 1961 dev->out_pipe = usb_sndintpipe(udev, info->ep_out); 1962 wtest = " intr-out"; 1963 } 1964 } else { 1965 if (info->autoconf) { 1966 int status; 1967 1968 status = get_endpoints(dev, intf); 1969 if (status < 0) { 1970 WARNING(dev, "couldn't get endpoints, %d\n", 1971 status); 1972 return status; 1973 } 1974 /* may find bulk or ISO pipes */ 1975 } else { 1976 if (info->ep_in) 1977 dev->in_pipe = usb_rcvbulkpipe(udev, 1978 info->ep_in); 1979 if (info->ep_out) 1980 dev->out_pipe = usb_sndbulkpipe(udev, 1981 info->ep_out); 1982 } 1983 if (dev->in_pipe) 1984 rtest = " bulk-in"; 1985 if (dev->out_pipe) 1986 wtest = " bulk-out"; 1987 if (dev->in_iso_pipe) 1988 irtest = " iso-in"; 1989 if (dev->out_iso_pipe) 1990 iwtest = " iso-out"; 1991 } 1992 1993 usb_set_intfdata(intf, dev); 1994 dev_info(&intf->dev, "%s\n", info->name); 1995 dev_info(&intf->dev, "%s speed {control%s%s%s%s%s} tests%s\n", 1996 ({ char *tmp; 1997 switch (udev->speed) { 1998 case USB_SPEED_LOW: 1999 tmp = "low"; 2000 break; 2001 case USB_SPEED_FULL: 2002 tmp = "full"; 2003 break; 2004 case USB_SPEED_HIGH: 2005 tmp = "high"; 2006 break; 2007 default: 2008 tmp = "unknown"; 2009 break; 2010 }; tmp; }), 2011 info->ctrl_out ? " in/out" : "", 2012 rtest, wtest, 2013 irtest, iwtest, 2014 info->alt >= 0 ? " (+alt)" : ""); 2015 return 0; 2016 } 2017 2018 static int usbtest_suspend(struct usb_interface *intf, pm_message_t message) 2019 { 2020 return 0; 2021 } 2022 2023 static int usbtest_resume(struct usb_interface *intf) 2024 { 2025 return 0; 2026 } 2027 2028 2029 static void usbtest_disconnect(struct usb_interface *intf) 2030 { 2031 struct usbtest_dev *dev = usb_get_intfdata(intf); 2032 2033 usb_set_intfdata(intf, NULL); 2034 dev_dbg(&intf->dev, "disconnect\n"); 2035 kfree(dev); 2036 } 2037 2038 /* Basic testing only needs a device that can source or sink bulk traffic. 2039 * Any device can test control transfers (default with GENERIC binding). 2040 * 2041 * Several entries work with the default EP0 implementation that's built 2042 * into EZ-USB chips. There's a default vendor ID which can be overridden 2043 * by (very) small config EEPROMS, but otherwise all these devices act 2044 * identically until firmware is loaded: only EP0 works. It turns out 2045 * to be easy to make other endpoints work, without modifying that EP0 2046 * behavior. For now, we expect that kind of firmware. 2047 */ 2048 2049 /* an21xx or fx versions of ez-usb */ 2050 static struct usbtest_info ez1_info = { 2051 .name = "EZ-USB device", 2052 .ep_in = 2, 2053 .ep_out = 2, 2054 .alt = 1, 2055 }; 2056 2057 /* fx2 version of ez-usb */ 2058 static struct usbtest_info ez2_info = { 2059 .name = "FX2 device", 2060 .ep_in = 6, 2061 .ep_out = 2, 2062 .alt = 1, 2063 }; 2064 2065 /* ezusb family device with dedicated usb test firmware, 2066 */ 2067 static struct usbtest_info fw_info = { 2068 .name = "usb test device", 2069 .ep_in = 2, 2070 .ep_out = 2, 2071 .alt = 1, 2072 .autoconf = 1, /* iso and ctrl_out need autoconf */ 2073 .ctrl_out = 1, 2074 .iso = 1, /* iso_ep's are #8 in/out */ 2075 }; 2076 2077 /* peripheral running Linux and 'zero.c' test firmware, or 2078 * its user-mode cousin. different versions of this use 2079 * different hardware with the same vendor/product codes. 2080 * host side MUST rely on the endpoint descriptors. 2081 */ 2082 static struct usbtest_info gz_info = { 2083 .name = "Linux gadget zero", 2084 .autoconf = 1, 2085 .ctrl_out = 1, 2086 .alt = 0, 2087 }; 2088 2089 static struct usbtest_info um_info = { 2090 .name = "Linux user mode test driver", 2091 .autoconf = 1, 2092 .alt = -1, 2093 }; 2094 2095 static struct usbtest_info um2_info = { 2096 .name = "Linux user mode ISO test driver", 2097 .autoconf = 1, 2098 .iso = 1, 2099 .alt = -1, 2100 }; 2101 2102 #ifdef IBOT2 2103 /* this is a nice source of high speed bulk data; 2104 * uses an FX2, with firmware provided in the device 2105 */ 2106 static struct usbtest_info ibot2_info = { 2107 .name = "iBOT2 webcam", 2108 .ep_in = 2, 2109 .alt = -1, 2110 }; 2111 #endif 2112 2113 #ifdef GENERIC 2114 /* we can use any device to test control traffic */ 2115 static struct usbtest_info generic_info = { 2116 .name = "Generic USB device", 2117 .alt = -1, 2118 }; 2119 #endif 2120 2121 2122 static const struct usb_device_id id_table[] = { 2123 2124 /*-------------------------------------------------------------*/ 2125 2126 /* EZ-USB devices which download firmware to replace (or in our 2127 * case augment) the default device implementation. 2128 */ 2129 2130 /* generic EZ-USB FX controller */ 2131 { USB_DEVICE(0x0547, 0x2235), 2132 .driver_info = (unsigned long) &ez1_info, 2133 }, 2134 2135 /* CY3671 development board with EZ-USB FX */ 2136 { USB_DEVICE(0x0547, 0x0080), 2137 .driver_info = (unsigned long) &ez1_info, 2138 }, 2139 2140 /* generic EZ-USB FX2 controller (or development board) */ 2141 { USB_DEVICE(0x04b4, 0x8613), 2142 .driver_info = (unsigned long) &ez2_info, 2143 }, 2144 2145 /* re-enumerated usb test device firmware */ 2146 { USB_DEVICE(0xfff0, 0xfff0), 2147 .driver_info = (unsigned long) &fw_info, 2148 }, 2149 2150 /* "Gadget Zero" firmware runs under Linux */ 2151 { USB_DEVICE(0x0525, 0xa4a0), 2152 .driver_info = (unsigned long) &gz_info, 2153 }, 2154 2155 /* so does a user-mode variant */ 2156 { USB_DEVICE(0x0525, 0xa4a4), 2157 .driver_info = (unsigned long) &um_info, 2158 }, 2159 2160 /* ... and a user-mode variant that talks iso */ 2161 { USB_DEVICE(0x0525, 0xa4a3), 2162 .driver_info = (unsigned long) &um2_info, 2163 }, 2164 2165 #ifdef KEYSPAN_19Qi 2166 /* Keyspan 19qi uses an21xx (original EZ-USB) */ 2167 /* this does not coexist with the real Keyspan 19qi driver! */ 2168 { USB_DEVICE(0x06cd, 0x010b), 2169 .driver_info = (unsigned long) &ez1_info, 2170 }, 2171 #endif 2172 2173 /*-------------------------------------------------------------*/ 2174 2175 #ifdef IBOT2 2176 /* iBOT2 makes a nice source of high speed bulk-in data */ 2177 /* this does not coexist with a real iBOT2 driver! */ 2178 { USB_DEVICE(0x0b62, 0x0059), 2179 .driver_info = (unsigned long) &ibot2_info, 2180 }, 2181 #endif 2182 2183 /*-------------------------------------------------------------*/ 2184 2185 #ifdef GENERIC 2186 /* module params can specify devices to use for control tests */ 2187 { .driver_info = (unsigned long) &generic_info, }, 2188 #endif 2189 2190 /*-------------------------------------------------------------*/ 2191 2192 { } 2193 }; 2194 MODULE_DEVICE_TABLE(usb, id_table); 2195 2196 static struct usb_driver usbtest_driver = { 2197 .name = "usbtest", 2198 .id_table = id_table, 2199 .probe = usbtest_probe, 2200 .unlocked_ioctl = usbtest_ioctl, 2201 .disconnect = usbtest_disconnect, 2202 .suspend = usbtest_suspend, 2203 .resume = usbtest_resume, 2204 }; 2205 2206 /*-------------------------------------------------------------------------*/ 2207 2208 static int __init usbtest_init(void) 2209 { 2210 #ifdef GENERIC 2211 if (vendor) 2212 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product); 2213 #endif 2214 return usb_register(&usbtest_driver); 2215 } 2216 module_init(usbtest_init); 2217 2218 static void __exit usbtest_exit(void) 2219 { 2220 usb_deregister(&usbtest_driver); 2221 } 2222 module_exit(usbtest_exit); 2223 2224 MODULE_DESCRIPTION("USB Core/HCD Testing Driver"); 2225 MODULE_LICENSE("GPL"); 2226 2227