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