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 #define GUARD_BYTE 0xA5 87 88 /*-------------------------------------------------------------------------*/ 89 90 static int 91 get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf) 92 { 93 int tmp; 94 struct usb_host_interface *alt; 95 struct usb_host_endpoint *in, *out; 96 struct usb_host_endpoint *iso_in, *iso_out; 97 struct usb_device *udev; 98 99 for (tmp = 0; tmp < intf->num_altsetting; tmp++) { 100 unsigned ep; 101 102 in = out = NULL; 103 iso_in = iso_out = NULL; 104 alt = intf->altsetting + tmp; 105 106 /* take the first altsetting with in-bulk + out-bulk; 107 * ignore other endpoints and altsetttings. 108 */ 109 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { 110 struct usb_host_endpoint *e; 111 112 e = alt->endpoint + ep; 113 switch (e->desc.bmAttributes) { 114 case USB_ENDPOINT_XFER_BULK: 115 break; 116 case USB_ENDPOINT_XFER_ISOC: 117 if (dev->info->iso) 118 goto try_iso; 119 /* FALLTHROUGH */ 120 default: 121 continue; 122 } 123 if (usb_endpoint_dir_in(&e->desc)) { 124 if (!in) 125 in = e; 126 } else { 127 if (!out) 128 out = e; 129 } 130 continue; 131 try_iso: 132 if (usb_endpoint_dir_in(&e->desc)) { 133 if (!iso_in) 134 iso_in = e; 135 } else { 136 if (!iso_out) 137 iso_out = e; 138 } 139 } 140 if ((in && out) || iso_in || iso_out) 141 goto found; 142 } 143 return -EINVAL; 144 145 found: 146 udev = testdev_to_usbdev(dev); 147 if (alt->desc.bAlternateSetting != 0) { 148 tmp = usb_set_interface(udev, 149 alt->desc.bInterfaceNumber, 150 alt->desc.bAlternateSetting); 151 if (tmp < 0) 152 return tmp; 153 } 154 155 if (in) { 156 dev->in_pipe = usb_rcvbulkpipe(udev, 157 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 158 dev->out_pipe = usb_sndbulkpipe(udev, 159 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 160 } 161 if (iso_in) { 162 dev->iso_in = &iso_in->desc; 163 dev->in_iso_pipe = usb_rcvisocpipe(udev, 164 iso_in->desc.bEndpointAddress 165 & USB_ENDPOINT_NUMBER_MASK); 166 } 167 168 if (iso_out) { 169 dev->iso_out = &iso_out->desc; 170 dev->out_iso_pipe = usb_sndisocpipe(udev, 171 iso_out->desc.bEndpointAddress 172 & USB_ENDPOINT_NUMBER_MASK); 173 } 174 return 0; 175 } 176 177 /*-------------------------------------------------------------------------*/ 178 179 /* Support for testing basic non-queued I/O streams. 180 * 181 * These just package urbs as requests that can be easily canceled. 182 * Each urb's data buffer is dynamically allocated; callers can fill 183 * them with non-zero test data (or test for it) when appropriate. 184 */ 185 186 static void simple_callback(struct urb *urb) 187 { 188 complete(urb->context); 189 } 190 191 static struct urb *usbtest_alloc_urb( 192 struct usb_device *udev, 193 int pipe, 194 unsigned long bytes, 195 unsigned transfer_flags, 196 unsigned offset) 197 { 198 struct urb *urb; 199 200 urb = usb_alloc_urb(0, GFP_KERNEL); 201 if (!urb) 202 return urb; 203 usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, simple_callback, NULL); 204 urb->interval = (udev->speed == USB_SPEED_HIGH) 205 ? (INTERRUPT_RATE << 3) 206 : INTERRUPT_RATE; 207 urb->transfer_flags = transfer_flags; 208 if (usb_pipein(pipe)) 209 urb->transfer_flags |= URB_SHORT_NOT_OK; 210 211 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 212 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset, 213 GFP_KERNEL, &urb->transfer_dma); 214 else 215 urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL); 216 217 if (!urb->transfer_buffer) { 218 usb_free_urb(urb); 219 return NULL; 220 } 221 222 /* To test unaligned transfers add an offset and fill the 223 unused memory with a guard value */ 224 if (offset) { 225 memset(urb->transfer_buffer, GUARD_BYTE, offset); 226 urb->transfer_buffer += offset; 227 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 228 urb->transfer_dma += offset; 229 } 230 231 /* For inbound transfers use guard byte so that test fails if 232 data not correctly copied */ 233 memset(urb->transfer_buffer, 234 usb_pipein(urb->pipe) ? GUARD_BYTE : 0, 235 bytes); 236 return urb; 237 } 238 239 static struct urb *simple_alloc_urb( 240 struct usb_device *udev, 241 int pipe, 242 unsigned long bytes) 243 { 244 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0); 245 } 246 247 static unsigned pattern; 248 static unsigned mod_pattern; 249 module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR); 250 MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)"); 251 252 static inline void simple_fill_buf(struct urb *urb) 253 { 254 unsigned i; 255 u8 *buf = urb->transfer_buffer; 256 unsigned len = urb->transfer_buffer_length; 257 258 switch (pattern) { 259 default: 260 /* FALLTHROUGH */ 261 case 0: 262 memset(buf, 0, len); 263 break; 264 case 1: /* mod63 */ 265 for (i = 0; i < len; i++) 266 *buf++ = (u8) (i % 63); 267 break; 268 } 269 } 270 271 static inline unsigned buffer_offset(void *buf) 272 { 273 return (unsigned)buf & (ARCH_KMALLOC_MINALIGN - 1); 274 } 275 276 static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb) 277 { 278 u8 *buf = urb->transfer_buffer; 279 u8 *guard = buf - buffer_offset(buf); 280 unsigned i; 281 282 for (i = 0; guard < buf; i++, guard++) { 283 if (*guard != GUARD_BYTE) { 284 ERROR(tdev, "guard byte[%d] %d (not %d)\n", 285 i, *guard, GUARD_BYTE); 286 return -EINVAL; 287 } 288 } 289 return 0; 290 } 291 292 static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb) 293 { 294 unsigned i; 295 u8 expected; 296 u8 *buf = urb->transfer_buffer; 297 unsigned len = urb->actual_length; 298 299 int ret = check_guard_bytes(tdev, urb); 300 if (ret) 301 return ret; 302 303 for (i = 0; i < len; i++, buf++) { 304 switch (pattern) { 305 /* all-zeroes has no synchronization issues */ 306 case 0: 307 expected = 0; 308 break; 309 /* mod63 stays in sync with short-terminated transfers, 310 * or otherwise when host and gadget agree on how large 311 * each usb transfer request should be. resync is done 312 * with set_interface or set_config. 313 */ 314 case 1: /* mod63 */ 315 expected = i % 63; 316 break; 317 /* always fail unsupported patterns */ 318 default: 319 expected = !*buf; 320 break; 321 } 322 if (*buf == expected) 323 continue; 324 ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected); 325 return -EINVAL; 326 } 327 return 0; 328 } 329 330 static void simple_free_urb(struct urb *urb) 331 { 332 unsigned offset = buffer_offset(urb->transfer_buffer); 333 334 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 335 usb_free_coherent( 336 urb->dev, 337 urb->transfer_buffer_length + offset, 338 urb->transfer_buffer - offset, 339 urb->transfer_dma - offset); 340 else 341 kfree(urb->transfer_buffer - offset); 342 usb_free_urb(urb); 343 } 344 345 static int simple_io( 346 struct usbtest_dev *tdev, 347 struct urb *urb, 348 int iterations, 349 int vary, 350 int expected, 351 const char *label 352 ) 353 { 354 struct usb_device *udev = urb->dev; 355 int max = urb->transfer_buffer_length; 356 struct completion completion; 357 int retval = 0; 358 359 urb->context = &completion; 360 while (retval == 0 && iterations-- > 0) { 361 init_completion(&completion); 362 if (usb_pipeout(urb->pipe)) 363 simple_fill_buf(urb); 364 retval = usb_submit_urb(urb, GFP_KERNEL); 365 if (retval != 0) 366 break; 367 368 /* NOTE: no timeouts; can't be broken out of by interrupt */ 369 wait_for_completion(&completion); 370 retval = urb->status; 371 urb->dev = udev; 372 if (retval == 0 && usb_pipein(urb->pipe)) 373 retval = simple_check_buf(tdev, urb); 374 375 if (vary) { 376 int len = urb->transfer_buffer_length; 377 378 len += vary; 379 len %= max; 380 if (len == 0) 381 len = (vary < max) ? vary : max; 382 urb->transfer_buffer_length = len; 383 } 384 385 /* FIXME if endpoint halted, clear halt (and log) */ 386 } 387 urb->transfer_buffer_length = max; 388 389 if (expected != retval) 390 dev_err(&udev->dev, 391 "%s failed, iterations left %d, status %d (not %d)\n", 392 label, iterations, retval, expected); 393 return retval; 394 } 395 396 397 /*-------------------------------------------------------------------------*/ 398 399 /* We use scatterlist primitives to test queued I/O. 400 * Yes, this also tests the scatterlist primitives. 401 */ 402 403 static void free_sglist(struct scatterlist *sg, int nents) 404 { 405 unsigned i; 406 407 if (!sg) 408 return; 409 for (i = 0; i < nents; i++) { 410 if (!sg_page(&sg[i])) 411 continue; 412 kfree(sg_virt(&sg[i])); 413 } 414 kfree(sg); 415 } 416 417 static struct scatterlist * 418 alloc_sglist(int nents, int max, int vary) 419 { 420 struct scatterlist *sg; 421 unsigned i; 422 unsigned size = max; 423 424 sg = kmalloc(nents * sizeof *sg, GFP_KERNEL); 425 if (!sg) 426 return NULL; 427 sg_init_table(sg, nents); 428 429 for (i = 0; i < nents; i++) { 430 char *buf; 431 unsigned j; 432 433 buf = kzalloc(size, GFP_KERNEL); 434 if (!buf) { 435 free_sglist(sg, i); 436 return NULL; 437 } 438 439 /* kmalloc pages are always physically contiguous! */ 440 sg_set_buf(&sg[i], buf, size); 441 442 switch (pattern) { 443 case 0: 444 /* already zeroed */ 445 break; 446 case 1: 447 for (j = 0; j < size; j++) 448 *buf++ = (u8) (j % 63); 449 break; 450 } 451 452 if (vary) { 453 size += vary; 454 size %= max; 455 if (size == 0) 456 size = (vary < max) ? vary : max; 457 } 458 } 459 460 return sg; 461 } 462 463 static int perform_sglist( 464 struct usbtest_dev *tdev, 465 unsigned iterations, 466 int pipe, 467 struct usb_sg_request *req, 468 struct scatterlist *sg, 469 int nents 470 ) 471 { 472 struct usb_device *udev = testdev_to_usbdev(tdev); 473 int retval = 0; 474 475 while (retval == 0 && iterations-- > 0) { 476 retval = usb_sg_init(req, udev, pipe, 477 (udev->speed == USB_SPEED_HIGH) 478 ? (INTERRUPT_RATE << 3) 479 : INTERRUPT_RATE, 480 sg, nents, 0, GFP_KERNEL); 481 482 if (retval) 483 break; 484 usb_sg_wait(req); 485 retval = req->status; 486 487 /* FIXME check resulting data pattern */ 488 489 /* FIXME if endpoint halted, clear halt (and log) */ 490 } 491 492 /* FIXME for unlink or fault handling tests, don't report 493 * failure if retval is as we expected ... 494 */ 495 if (retval) 496 ERROR(tdev, "perform_sglist failed, " 497 "iterations left %d, status %d\n", 498 iterations, retval); 499 return retval; 500 } 501 502 503 /*-------------------------------------------------------------------------*/ 504 505 /* unqueued control message testing 506 * 507 * there's a nice set of device functional requirements in chapter 9 of the 508 * usb 2.0 spec, which we can apply to ANY device, even ones that don't use 509 * special test firmware. 510 * 511 * we know the device is configured (or suspended) by the time it's visible 512 * through usbfs. we can't change that, so we won't test enumeration (which 513 * worked 'well enough' to get here, this time), power management (ditto), 514 * or remote wakeup (which needs human interaction). 515 */ 516 517 static unsigned realworld = 1; 518 module_param(realworld, uint, 0); 519 MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance"); 520 521 static int get_altsetting(struct usbtest_dev *dev) 522 { 523 struct usb_interface *iface = dev->intf; 524 struct usb_device *udev = interface_to_usbdev(iface); 525 int retval; 526 527 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 528 USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE, 529 0, iface->altsetting[0].desc.bInterfaceNumber, 530 dev->buf, 1, USB_CTRL_GET_TIMEOUT); 531 switch (retval) { 532 case 1: 533 return dev->buf[0]; 534 case 0: 535 retval = -ERANGE; 536 /* FALLTHROUGH */ 537 default: 538 return retval; 539 } 540 } 541 542 static int set_altsetting(struct usbtest_dev *dev, int alternate) 543 { 544 struct usb_interface *iface = dev->intf; 545 struct usb_device *udev; 546 547 if (alternate < 0 || alternate >= 256) 548 return -EINVAL; 549 550 udev = interface_to_usbdev(iface); 551 return usb_set_interface(udev, 552 iface->altsetting[0].desc.bInterfaceNumber, 553 alternate); 554 } 555 556 static int is_good_config(struct usbtest_dev *tdev, int len) 557 { 558 struct usb_config_descriptor *config; 559 560 if (len < sizeof *config) 561 return 0; 562 config = (struct usb_config_descriptor *) tdev->buf; 563 564 switch (config->bDescriptorType) { 565 case USB_DT_CONFIG: 566 case USB_DT_OTHER_SPEED_CONFIG: 567 if (config->bLength != 9) { 568 ERROR(tdev, "bogus config descriptor length\n"); 569 return 0; 570 } 571 /* this bit 'must be 1' but often isn't */ 572 if (!realworld && !(config->bmAttributes & 0x80)) { 573 ERROR(tdev, "high bit of config attributes not set\n"); 574 return 0; 575 } 576 if (config->bmAttributes & 0x1f) { /* reserved == 0 */ 577 ERROR(tdev, "reserved config bits set\n"); 578 return 0; 579 } 580 break; 581 default: 582 return 0; 583 } 584 585 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */ 586 return 1; 587 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */ 588 return 1; 589 ERROR(tdev, "bogus config descriptor read size\n"); 590 return 0; 591 } 592 593 /* sanity test for standard requests working with usb_control_mesg() and some 594 * of the utility functions which use it. 595 * 596 * this doesn't test how endpoint halts behave or data toggles get set, since 597 * we won't do I/O to bulk/interrupt endpoints here (which is how to change 598 * halt or toggle). toggle testing is impractical without support from hcds. 599 * 600 * this avoids failing devices linux would normally work with, by not testing 601 * config/altsetting operations for devices that only support their defaults. 602 * such devices rarely support those needless operations. 603 * 604 * NOTE that since this is a sanity test, it's not examining boundary cases 605 * to see if usbcore, hcd, and device all behave right. such testing would 606 * involve varied read sizes and other operation sequences. 607 */ 608 static int ch9_postconfig(struct usbtest_dev *dev) 609 { 610 struct usb_interface *iface = dev->intf; 611 struct usb_device *udev = interface_to_usbdev(iface); 612 int i, alt, retval; 613 614 /* [9.2.3] if there's more than one altsetting, we need to be able to 615 * set and get each one. mostly trusts the descriptors from usbcore. 616 */ 617 for (i = 0; i < iface->num_altsetting; i++) { 618 619 /* 9.2.3 constrains the range here */ 620 alt = iface->altsetting[i].desc.bAlternateSetting; 621 if (alt < 0 || alt >= iface->num_altsetting) { 622 dev_err(&iface->dev, 623 "invalid alt [%d].bAltSetting = %d\n", 624 i, alt); 625 } 626 627 /* [real world] get/set unimplemented if there's only one */ 628 if (realworld && iface->num_altsetting == 1) 629 continue; 630 631 /* [9.4.10] set_interface */ 632 retval = set_altsetting(dev, alt); 633 if (retval) { 634 dev_err(&iface->dev, "can't set_interface = %d, %d\n", 635 alt, retval); 636 return retval; 637 } 638 639 /* [9.4.4] get_interface always works */ 640 retval = get_altsetting(dev); 641 if (retval != alt) { 642 dev_err(&iface->dev, "get alt should be %d, was %d\n", 643 alt, retval); 644 return (retval < 0) ? retval : -EDOM; 645 } 646 647 } 648 649 /* [real world] get_config unimplemented if there's only one */ 650 if (!realworld || udev->descriptor.bNumConfigurations != 1) { 651 int expected = udev->actconfig->desc.bConfigurationValue; 652 653 /* [9.4.2] get_configuration always works 654 * ... although some cheap devices (like one TI Hub I've got) 655 * won't return config descriptors except before set_config. 656 */ 657 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 658 USB_REQ_GET_CONFIGURATION, 659 USB_DIR_IN | USB_RECIP_DEVICE, 660 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT); 661 if (retval != 1 || dev->buf[0] != expected) { 662 dev_err(&iface->dev, "get config --> %d %d (1 %d)\n", 663 retval, dev->buf[0], expected); 664 return (retval < 0) ? retval : -EDOM; 665 } 666 } 667 668 /* there's always [9.4.3] a device descriptor [9.6.1] */ 669 retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0, 670 dev->buf, sizeof udev->descriptor); 671 if (retval != sizeof udev->descriptor) { 672 dev_err(&iface->dev, "dev descriptor --> %d\n", retval); 673 return (retval < 0) ? retval : -EDOM; 674 } 675 676 /* there's always [9.4.3] at least one config descriptor [9.6.3] */ 677 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) { 678 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i, 679 dev->buf, TBUF_SIZE); 680 if (!is_good_config(dev, retval)) { 681 dev_err(&iface->dev, 682 "config [%d] descriptor --> %d\n", 683 i, retval); 684 return (retval < 0) ? retval : -EDOM; 685 } 686 687 /* FIXME cross-checking udev->config[i] to make sure usbcore 688 * parsed it right (etc) would be good testing paranoia 689 */ 690 } 691 692 /* and sometimes [9.2.6.6] speed dependent descriptors */ 693 if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) { 694 struct usb_qualifier_descriptor *d = NULL; 695 696 /* device qualifier [9.6.2] */ 697 retval = usb_get_descriptor(udev, 698 USB_DT_DEVICE_QUALIFIER, 0, dev->buf, 699 sizeof(struct usb_qualifier_descriptor)); 700 if (retval == -EPIPE) { 701 if (udev->speed == USB_SPEED_HIGH) { 702 dev_err(&iface->dev, 703 "hs dev qualifier --> %d\n", 704 retval); 705 return (retval < 0) ? retval : -EDOM; 706 } 707 /* usb2.0 but not high-speed capable; fine */ 708 } else if (retval != sizeof(struct usb_qualifier_descriptor)) { 709 dev_err(&iface->dev, "dev qualifier --> %d\n", retval); 710 return (retval < 0) ? retval : -EDOM; 711 } else 712 d = (struct usb_qualifier_descriptor *) dev->buf; 713 714 /* might not have [9.6.2] any other-speed configs [9.6.4] */ 715 if (d) { 716 unsigned max = d->bNumConfigurations; 717 for (i = 0; i < max; i++) { 718 retval = usb_get_descriptor(udev, 719 USB_DT_OTHER_SPEED_CONFIG, i, 720 dev->buf, TBUF_SIZE); 721 if (!is_good_config(dev, retval)) { 722 dev_err(&iface->dev, 723 "other speed config --> %d\n", 724 retval); 725 return (retval < 0) ? retval : -EDOM; 726 } 727 } 728 } 729 } 730 /* FIXME fetch strings from at least the device descriptor */ 731 732 /* [9.4.5] get_status always works */ 733 retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf); 734 if (retval != 2) { 735 dev_err(&iface->dev, "get dev status --> %d\n", retval); 736 return (retval < 0) ? retval : -EDOM; 737 } 738 739 /* FIXME configuration.bmAttributes says if we could try to set/clear 740 * the device's remote wakeup feature ... if we can, test that here 741 */ 742 743 retval = usb_get_status(udev, USB_RECIP_INTERFACE, 744 iface->altsetting[0].desc.bInterfaceNumber, dev->buf); 745 if (retval != 2) { 746 dev_err(&iface->dev, "get interface status --> %d\n", retval); 747 return (retval < 0) ? retval : -EDOM; 748 } 749 /* FIXME get status for each endpoint in the interface */ 750 751 return 0; 752 } 753 754 /*-------------------------------------------------------------------------*/ 755 756 /* use ch9 requests to test whether: 757 * (a) queues work for control, keeping N subtests queued and 758 * active (auto-resubmit) for M loops through the queue. 759 * (b) protocol stalls (control-only) will autorecover. 760 * it's not like bulk/intr; no halt clearing. 761 * (c) short control reads are reported and handled. 762 * (d) queues are always processed in-order 763 */ 764 765 struct ctrl_ctx { 766 spinlock_t lock; 767 struct usbtest_dev *dev; 768 struct completion complete; 769 unsigned count; 770 unsigned pending; 771 int status; 772 struct urb **urb; 773 struct usbtest_param *param; 774 int last; 775 }; 776 777 #define NUM_SUBCASES 15 /* how many test subcases here? */ 778 779 struct subcase { 780 struct usb_ctrlrequest setup; 781 int number; 782 int expected; 783 }; 784 785 static void ctrl_complete(struct urb *urb) 786 { 787 struct ctrl_ctx *ctx = urb->context; 788 struct usb_ctrlrequest *reqp; 789 struct subcase *subcase; 790 int status = urb->status; 791 792 reqp = (struct usb_ctrlrequest *)urb->setup_packet; 793 subcase = container_of(reqp, struct subcase, setup); 794 795 spin_lock(&ctx->lock); 796 ctx->count--; 797 ctx->pending--; 798 799 /* queue must transfer and complete in fifo order, unless 800 * usb_unlink_urb() is used to unlink something not at the 801 * physical queue head (not tested). 802 */ 803 if (subcase->number > 0) { 804 if ((subcase->number - ctx->last) != 1) { 805 ERROR(ctx->dev, 806 "subcase %d completed out of order, last %d\n", 807 subcase->number, ctx->last); 808 status = -EDOM; 809 ctx->last = subcase->number; 810 goto error; 811 } 812 } 813 ctx->last = subcase->number; 814 815 /* succeed or fault in only one way? */ 816 if (status == subcase->expected) 817 status = 0; 818 819 /* async unlink for cleanup? */ 820 else if (status != -ECONNRESET) { 821 822 /* some faults are allowed, not required */ 823 if (subcase->expected > 0 && ( 824 ((status == -subcase->expected /* happened */ 825 || status == 0)))) /* didn't */ 826 status = 0; 827 /* sometimes more than one fault is allowed */ 828 else if (subcase->number == 12 && status == -EPIPE) 829 status = 0; 830 else 831 ERROR(ctx->dev, "subtest %d error, status %d\n", 832 subcase->number, status); 833 } 834 835 /* unexpected status codes mean errors; ideally, in hardware */ 836 if (status) { 837 error: 838 if (ctx->status == 0) { 839 int i; 840 841 ctx->status = status; 842 ERROR(ctx->dev, "control queue %02x.%02x, err %d, " 843 "%d left, subcase %d, len %d/%d\n", 844 reqp->bRequestType, reqp->bRequest, 845 status, ctx->count, subcase->number, 846 urb->actual_length, 847 urb->transfer_buffer_length); 848 849 /* FIXME this "unlink everything" exit route should 850 * be a separate test case. 851 */ 852 853 /* unlink whatever's still pending */ 854 for (i = 1; i < ctx->param->sglen; i++) { 855 struct urb *u = ctx->urb[ 856 (i + subcase->number) 857 % ctx->param->sglen]; 858 859 if (u == urb || !u->dev) 860 continue; 861 spin_unlock(&ctx->lock); 862 status = usb_unlink_urb(u); 863 spin_lock(&ctx->lock); 864 switch (status) { 865 case -EINPROGRESS: 866 case -EBUSY: 867 case -EIDRM: 868 continue; 869 default: 870 ERROR(ctx->dev, "urb unlink --> %d\n", 871 status); 872 } 873 } 874 status = ctx->status; 875 } 876 } 877 878 /* resubmit if we need to, else mark this as done */ 879 if ((status == 0) && (ctx->pending < ctx->count)) { 880 status = usb_submit_urb(urb, GFP_ATOMIC); 881 if (status != 0) { 882 ERROR(ctx->dev, 883 "can't resubmit ctrl %02x.%02x, err %d\n", 884 reqp->bRequestType, reqp->bRequest, status); 885 urb->dev = NULL; 886 } else 887 ctx->pending++; 888 } else 889 urb->dev = NULL; 890 891 /* signal completion when nothing's queued */ 892 if (ctx->pending == 0) 893 complete(&ctx->complete); 894 spin_unlock(&ctx->lock); 895 } 896 897 static int 898 test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param) 899 { 900 struct usb_device *udev = testdev_to_usbdev(dev); 901 struct urb **urb; 902 struct ctrl_ctx context; 903 int i; 904 905 spin_lock_init(&context.lock); 906 context.dev = dev; 907 init_completion(&context.complete); 908 context.count = param->sglen * param->iterations; 909 context.pending = 0; 910 context.status = -ENOMEM; 911 context.param = param; 912 context.last = -1; 913 914 /* allocate and init the urbs we'll queue. 915 * as with bulk/intr sglists, sglen is the queue depth; it also 916 * controls which subtests run (more tests than sglen) or rerun. 917 */ 918 urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL); 919 if (!urb) 920 return -ENOMEM; 921 for (i = 0; i < param->sglen; i++) { 922 int pipe = usb_rcvctrlpipe(udev, 0); 923 unsigned len; 924 struct urb *u; 925 struct usb_ctrlrequest req; 926 struct subcase *reqp; 927 928 /* sign of this variable means: 929 * -: tested code must return this (negative) error code 930 * +: tested code may return this (negative too) error code 931 */ 932 int expected = 0; 933 934 /* requests here are mostly expected to succeed on any 935 * device, but some are chosen to trigger protocol stalls 936 * or short reads. 937 */ 938 memset(&req, 0, sizeof req); 939 req.bRequest = USB_REQ_GET_DESCRIPTOR; 940 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE; 941 942 switch (i % NUM_SUBCASES) { 943 case 0: /* get device descriptor */ 944 req.wValue = cpu_to_le16(USB_DT_DEVICE << 8); 945 len = sizeof(struct usb_device_descriptor); 946 break; 947 case 1: /* get first config descriptor (only) */ 948 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 949 len = sizeof(struct usb_config_descriptor); 950 break; 951 case 2: /* get altsetting (OFTEN STALLS) */ 952 req.bRequest = USB_REQ_GET_INTERFACE; 953 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE; 954 /* index = 0 means first interface */ 955 len = 1; 956 expected = EPIPE; 957 break; 958 case 3: /* get interface status */ 959 req.bRequest = USB_REQ_GET_STATUS; 960 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE; 961 /* interface 0 */ 962 len = 2; 963 break; 964 case 4: /* get device status */ 965 req.bRequest = USB_REQ_GET_STATUS; 966 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE; 967 len = 2; 968 break; 969 case 5: /* get device qualifier (MAY STALL) */ 970 req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8); 971 len = sizeof(struct usb_qualifier_descriptor); 972 if (udev->speed != USB_SPEED_HIGH) 973 expected = EPIPE; 974 break; 975 case 6: /* get first config descriptor, plus interface */ 976 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 977 len = sizeof(struct usb_config_descriptor); 978 len += sizeof(struct usb_interface_descriptor); 979 break; 980 case 7: /* get interface descriptor (ALWAYS STALLS) */ 981 req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8); 982 /* interface == 0 */ 983 len = sizeof(struct usb_interface_descriptor); 984 expected = -EPIPE; 985 break; 986 /* NOTE: two consecutive stalls in the queue here. 987 * that tests fault recovery a bit more aggressively. */ 988 case 8: /* clear endpoint halt (MAY STALL) */ 989 req.bRequest = USB_REQ_CLEAR_FEATURE; 990 req.bRequestType = USB_RECIP_ENDPOINT; 991 /* wValue 0 == ep halt */ 992 /* wIndex 0 == ep0 (shouldn't halt!) */ 993 len = 0; 994 pipe = usb_sndctrlpipe(udev, 0); 995 expected = EPIPE; 996 break; 997 case 9: /* get endpoint status */ 998 req.bRequest = USB_REQ_GET_STATUS; 999 req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT; 1000 /* endpoint 0 */ 1001 len = 2; 1002 break; 1003 case 10: /* trigger short read (EREMOTEIO) */ 1004 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1005 len = 1024; 1006 expected = -EREMOTEIO; 1007 break; 1008 /* NOTE: two consecutive _different_ faults in the queue. */ 1009 case 11: /* get endpoint descriptor (ALWAYS STALLS) */ 1010 req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8); 1011 /* endpoint == 0 */ 1012 len = sizeof(struct usb_interface_descriptor); 1013 expected = EPIPE; 1014 break; 1015 /* NOTE: sometimes even a third fault in the queue! */ 1016 case 12: /* get string 0 descriptor (MAY STALL) */ 1017 req.wValue = cpu_to_le16(USB_DT_STRING << 8); 1018 /* string == 0, for language IDs */ 1019 len = sizeof(struct usb_interface_descriptor); 1020 /* may succeed when > 4 languages */ 1021 expected = EREMOTEIO; /* or EPIPE, if no strings */ 1022 break; 1023 case 13: /* short read, resembling case 10 */ 1024 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1025 /* last data packet "should" be DATA1, not DATA0 */ 1026 len = 1024 - udev->descriptor.bMaxPacketSize0; 1027 expected = -EREMOTEIO; 1028 break; 1029 case 14: /* short read; try to fill the last packet */ 1030 req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0); 1031 /* device descriptor size == 18 bytes */ 1032 len = udev->descriptor.bMaxPacketSize0; 1033 switch (len) { 1034 case 8: 1035 len = 24; 1036 break; 1037 case 16: 1038 len = 32; 1039 break; 1040 } 1041 expected = -EREMOTEIO; 1042 break; 1043 default: 1044 ERROR(dev, "bogus number of ctrl queue testcases!\n"); 1045 context.status = -EINVAL; 1046 goto cleanup; 1047 } 1048 req.wLength = cpu_to_le16(len); 1049 urb[i] = u = simple_alloc_urb(udev, pipe, len); 1050 if (!u) 1051 goto cleanup; 1052 1053 reqp = kmalloc(sizeof *reqp, GFP_KERNEL); 1054 if (!reqp) 1055 goto cleanup; 1056 reqp->setup = req; 1057 reqp->number = i % NUM_SUBCASES; 1058 reqp->expected = expected; 1059 u->setup_packet = (char *) &reqp->setup; 1060 1061 u->context = &context; 1062 u->complete = ctrl_complete; 1063 } 1064 1065 /* queue the urbs */ 1066 context.urb = urb; 1067 spin_lock_irq(&context.lock); 1068 for (i = 0; i < param->sglen; i++) { 1069 context.status = usb_submit_urb(urb[i], GFP_ATOMIC); 1070 if (context.status != 0) { 1071 ERROR(dev, "can't submit urb[%d], status %d\n", 1072 i, context.status); 1073 context.count = context.pending; 1074 break; 1075 } 1076 context.pending++; 1077 } 1078 spin_unlock_irq(&context.lock); 1079 1080 /* FIXME set timer and time out; provide a disconnect hook */ 1081 1082 /* wait for the last one to complete */ 1083 if (context.pending > 0) 1084 wait_for_completion(&context.complete); 1085 1086 cleanup: 1087 for (i = 0; i < param->sglen; i++) { 1088 if (!urb[i]) 1089 continue; 1090 urb[i]->dev = udev; 1091 kfree(urb[i]->setup_packet); 1092 simple_free_urb(urb[i]); 1093 } 1094 kfree(urb); 1095 return context.status; 1096 } 1097 #undef NUM_SUBCASES 1098 1099 1100 /*-------------------------------------------------------------------------*/ 1101 1102 static void unlink1_callback(struct urb *urb) 1103 { 1104 int status = urb->status; 1105 1106 /* we "know" -EPIPE (stall) never happens */ 1107 if (!status) 1108 status = usb_submit_urb(urb, GFP_ATOMIC); 1109 if (status) { 1110 urb->status = status; 1111 complete(urb->context); 1112 } 1113 } 1114 1115 static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async) 1116 { 1117 struct urb *urb; 1118 struct completion completion; 1119 int retval = 0; 1120 1121 init_completion(&completion); 1122 urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size); 1123 if (!urb) 1124 return -ENOMEM; 1125 urb->context = &completion; 1126 urb->complete = unlink1_callback; 1127 1128 /* keep the endpoint busy. there are lots of hc/hcd-internal 1129 * states, and testing should get to all of them over time. 1130 * 1131 * FIXME want additional tests for when endpoint is STALLing 1132 * due to errors, or is just NAKing requests. 1133 */ 1134 retval = usb_submit_urb(urb, GFP_KERNEL); 1135 if (retval != 0) { 1136 dev_err(&dev->intf->dev, "submit fail %d\n", retval); 1137 return retval; 1138 } 1139 1140 /* unlinking that should always work. variable delay tests more 1141 * hcd states and code paths, even with little other system load. 1142 */ 1143 msleep(jiffies % (2 * INTERRUPT_RATE)); 1144 if (async) { 1145 while (!completion_done(&completion)) { 1146 retval = usb_unlink_urb(urb); 1147 1148 switch (retval) { 1149 case -EBUSY: 1150 case -EIDRM: 1151 /* we can't unlink urbs while they're completing 1152 * or if they've completed, and we haven't 1153 * resubmitted. "normal" drivers would prevent 1154 * resubmission, but since we're testing unlink 1155 * paths, we can't. 1156 */ 1157 ERROR(dev, "unlink retry\n"); 1158 continue; 1159 case 0: 1160 case -EINPROGRESS: 1161 break; 1162 1163 default: 1164 dev_err(&dev->intf->dev, 1165 "unlink fail %d\n", retval); 1166 return retval; 1167 } 1168 1169 break; 1170 } 1171 } else 1172 usb_kill_urb(urb); 1173 1174 wait_for_completion(&completion); 1175 retval = urb->status; 1176 simple_free_urb(urb); 1177 1178 if (async) 1179 return (retval == -ECONNRESET) ? 0 : retval - 1000; 1180 else 1181 return (retval == -ENOENT || retval == -EPERM) ? 1182 0 : retval - 2000; 1183 } 1184 1185 static int unlink_simple(struct usbtest_dev *dev, int pipe, int len) 1186 { 1187 int retval = 0; 1188 1189 /* test sync and async paths */ 1190 retval = unlink1(dev, pipe, len, 1); 1191 if (!retval) 1192 retval = unlink1(dev, pipe, len, 0); 1193 return retval; 1194 } 1195 1196 /*-------------------------------------------------------------------------*/ 1197 1198 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) 1199 { 1200 int retval; 1201 u16 status; 1202 1203 /* shouldn't look or act halted */ 1204 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status); 1205 if (retval < 0) { 1206 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n", 1207 ep, retval); 1208 return retval; 1209 } 1210 if (status != 0) { 1211 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status); 1212 return -EINVAL; 1213 } 1214 retval = simple_io(tdev, urb, 1, 0, 0, __func__); 1215 if (retval != 0) 1216 return -EINVAL; 1217 return 0; 1218 } 1219 1220 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) 1221 { 1222 int retval; 1223 u16 status; 1224 1225 /* should look and act halted */ 1226 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status); 1227 if (retval < 0) { 1228 ERROR(tdev, "ep %02x couldn't get halt status, %d\n", 1229 ep, retval); 1230 return retval; 1231 } 1232 le16_to_cpus(&status); 1233 if (status != 1) { 1234 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status); 1235 return -EINVAL; 1236 } 1237 retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__); 1238 if (retval != -EPIPE) 1239 return -EINVAL; 1240 retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted"); 1241 if (retval != -EPIPE) 1242 return -EINVAL; 1243 return 0; 1244 } 1245 1246 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb) 1247 { 1248 int retval; 1249 1250 /* shouldn't look or act halted now */ 1251 retval = verify_not_halted(tdev, ep, urb); 1252 if (retval < 0) 1253 return retval; 1254 1255 /* set halt (protocol test only), verify it worked */ 1256 retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0), 1257 USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT, 1258 USB_ENDPOINT_HALT, ep, 1259 NULL, 0, USB_CTRL_SET_TIMEOUT); 1260 if (retval < 0) { 1261 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval); 1262 return retval; 1263 } 1264 retval = verify_halted(tdev, ep, urb); 1265 if (retval < 0) 1266 return retval; 1267 1268 /* clear halt (tests API + protocol), verify it worked */ 1269 retval = usb_clear_halt(urb->dev, urb->pipe); 1270 if (retval < 0) { 1271 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval); 1272 return retval; 1273 } 1274 retval = verify_not_halted(tdev, ep, urb); 1275 if (retval < 0) 1276 return retval; 1277 1278 /* NOTE: could also verify SET_INTERFACE clear halts ... */ 1279 1280 return 0; 1281 } 1282 1283 static int halt_simple(struct usbtest_dev *dev) 1284 { 1285 int ep; 1286 int retval = 0; 1287 struct urb *urb; 1288 1289 urb = simple_alloc_urb(testdev_to_usbdev(dev), 0, 512); 1290 if (urb == NULL) 1291 return -ENOMEM; 1292 1293 if (dev->in_pipe) { 1294 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN; 1295 urb->pipe = dev->in_pipe; 1296 retval = test_halt(dev, ep, urb); 1297 if (retval < 0) 1298 goto done; 1299 } 1300 1301 if (dev->out_pipe) { 1302 ep = usb_pipeendpoint(dev->out_pipe); 1303 urb->pipe = dev->out_pipe; 1304 retval = test_halt(dev, ep, urb); 1305 } 1306 done: 1307 simple_free_urb(urb); 1308 return retval; 1309 } 1310 1311 /*-------------------------------------------------------------------------*/ 1312 1313 /* Control OUT tests use the vendor control requests from Intel's 1314 * USB 2.0 compliance test device: write a buffer, read it back. 1315 * 1316 * Intel's spec only _requires_ that it work for one packet, which 1317 * is pretty weak. Some HCDs place limits here; most devices will 1318 * need to be able to handle more than one OUT data packet. We'll 1319 * try whatever we're told to try. 1320 */ 1321 static int ctrl_out(struct usbtest_dev *dev, 1322 unsigned count, unsigned length, unsigned vary, unsigned offset) 1323 { 1324 unsigned i, j, len; 1325 int retval; 1326 u8 *buf; 1327 char *what = "?"; 1328 struct usb_device *udev; 1329 1330 if (length < 1 || length > 0xffff || vary >= length) 1331 return -EINVAL; 1332 1333 buf = kmalloc(length + offset, GFP_KERNEL); 1334 if (!buf) 1335 return -ENOMEM; 1336 1337 buf += offset; 1338 udev = testdev_to_usbdev(dev); 1339 len = length; 1340 retval = 0; 1341 1342 /* NOTE: hardware might well act differently if we pushed it 1343 * with lots back-to-back queued requests. 1344 */ 1345 for (i = 0; i < count; i++) { 1346 /* write patterned data */ 1347 for (j = 0; j < len; j++) 1348 buf[j] = i + j; 1349 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 1350 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR, 1351 0, 0, buf, len, USB_CTRL_SET_TIMEOUT); 1352 if (retval != len) { 1353 what = "write"; 1354 if (retval >= 0) { 1355 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n", 1356 retval, len); 1357 retval = -EBADMSG; 1358 } 1359 break; 1360 } 1361 1362 /* read it back -- assuming nothing intervened!! */ 1363 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 1364 0x5c, USB_DIR_IN|USB_TYPE_VENDOR, 1365 0, 0, buf, len, USB_CTRL_GET_TIMEOUT); 1366 if (retval != len) { 1367 what = "read"; 1368 if (retval >= 0) { 1369 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n", 1370 retval, len); 1371 retval = -EBADMSG; 1372 } 1373 break; 1374 } 1375 1376 /* fail if we can't verify */ 1377 for (j = 0; j < len; j++) { 1378 if (buf[j] != (u8) (i + j)) { 1379 ERROR(dev, "ctrl_out, byte %d is %d not %d\n", 1380 j, buf[j], (u8) i + j); 1381 retval = -EBADMSG; 1382 break; 1383 } 1384 } 1385 if (retval < 0) { 1386 what = "verify"; 1387 break; 1388 } 1389 1390 len += vary; 1391 1392 /* [real world] the "zero bytes IN" case isn't really used. 1393 * hardware can easily trip up in this weird case, since its 1394 * status stage is IN, not OUT like other ep0in transfers. 1395 */ 1396 if (len > length) 1397 len = realworld ? 1 : 0; 1398 } 1399 1400 if (retval < 0) 1401 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n", 1402 what, retval, i); 1403 1404 kfree(buf - offset); 1405 return retval; 1406 } 1407 1408 /*-------------------------------------------------------------------------*/ 1409 1410 /* ISO tests ... mimics common usage 1411 * - buffer length is split into N packets (mostly maxpacket sized) 1412 * - multi-buffers according to sglen 1413 */ 1414 1415 struct iso_context { 1416 unsigned count; 1417 unsigned pending; 1418 spinlock_t lock; 1419 struct completion done; 1420 int submit_error; 1421 unsigned long errors; 1422 unsigned long packet_count; 1423 struct usbtest_dev *dev; 1424 }; 1425 1426 static void iso_callback(struct urb *urb) 1427 { 1428 struct iso_context *ctx = urb->context; 1429 1430 spin_lock(&ctx->lock); 1431 ctx->count--; 1432 1433 ctx->packet_count += urb->number_of_packets; 1434 if (urb->error_count > 0) 1435 ctx->errors += urb->error_count; 1436 else if (urb->status != 0) 1437 ctx->errors += urb->number_of_packets; 1438 else if (urb->actual_length != urb->transfer_buffer_length) 1439 ctx->errors++; 1440 else if (check_guard_bytes(ctx->dev, urb) != 0) 1441 ctx->errors++; 1442 1443 if (urb->status == 0 && ctx->count > (ctx->pending - 1) 1444 && !ctx->submit_error) { 1445 int status = usb_submit_urb(urb, GFP_ATOMIC); 1446 switch (status) { 1447 case 0: 1448 goto done; 1449 default: 1450 dev_err(&ctx->dev->intf->dev, 1451 "iso resubmit err %d\n", 1452 status); 1453 /* FALLTHROUGH */ 1454 case -ENODEV: /* disconnected */ 1455 case -ESHUTDOWN: /* endpoint disabled */ 1456 ctx->submit_error = 1; 1457 break; 1458 } 1459 } 1460 1461 ctx->pending--; 1462 if (ctx->pending == 0) { 1463 if (ctx->errors) 1464 dev_err(&ctx->dev->intf->dev, 1465 "iso test, %lu errors out of %lu\n", 1466 ctx->errors, ctx->packet_count); 1467 complete(&ctx->done); 1468 } 1469 done: 1470 spin_unlock(&ctx->lock); 1471 } 1472 1473 static struct urb *iso_alloc_urb( 1474 struct usb_device *udev, 1475 int pipe, 1476 struct usb_endpoint_descriptor *desc, 1477 long bytes, 1478 unsigned offset 1479 ) 1480 { 1481 struct urb *urb; 1482 unsigned i, maxp, packets; 1483 1484 if (bytes < 0 || !desc) 1485 return NULL; 1486 maxp = 0x7ff & le16_to_cpu(desc->wMaxPacketSize); 1487 maxp *= 1 + (0x3 & (le16_to_cpu(desc->wMaxPacketSize) >> 11)); 1488 packets = DIV_ROUND_UP(bytes, maxp); 1489 1490 urb = usb_alloc_urb(packets, GFP_KERNEL); 1491 if (!urb) 1492 return urb; 1493 urb->dev = udev; 1494 urb->pipe = pipe; 1495 1496 urb->number_of_packets = packets; 1497 urb->transfer_buffer_length = bytes; 1498 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset, 1499 GFP_KERNEL, 1500 &urb->transfer_dma); 1501 if (!urb->transfer_buffer) { 1502 usb_free_urb(urb); 1503 return NULL; 1504 } 1505 if (offset) { 1506 memset(urb->transfer_buffer, GUARD_BYTE, offset); 1507 urb->transfer_buffer += offset; 1508 urb->transfer_dma += offset; 1509 } 1510 /* For inbound transfers use guard byte so that test fails if 1511 data not correctly copied */ 1512 memset(urb->transfer_buffer, 1513 usb_pipein(urb->pipe) ? GUARD_BYTE : 0, 1514 bytes); 1515 1516 for (i = 0; i < packets; i++) { 1517 /* here, only the last packet will be short */ 1518 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp); 1519 bytes -= urb->iso_frame_desc[i].length; 1520 1521 urb->iso_frame_desc[i].offset = maxp * i; 1522 } 1523 1524 urb->complete = iso_callback; 1525 /* urb->context = SET BY CALLER */ 1526 urb->interval = 1 << (desc->bInterval - 1); 1527 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 1528 return urb; 1529 } 1530 1531 static int 1532 test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param, 1533 int pipe, struct usb_endpoint_descriptor *desc, unsigned offset) 1534 { 1535 struct iso_context context; 1536 struct usb_device *udev; 1537 unsigned i; 1538 unsigned long packets = 0; 1539 int status = 0; 1540 struct urb *urbs[10]; /* FIXME no limit */ 1541 1542 if (param->sglen > 10) 1543 return -EDOM; 1544 1545 memset(&context, 0, sizeof context); 1546 context.count = param->iterations * param->sglen; 1547 context.dev = dev; 1548 init_completion(&context.done); 1549 spin_lock_init(&context.lock); 1550 1551 memset(urbs, 0, sizeof urbs); 1552 udev = testdev_to_usbdev(dev); 1553 dev_info(&dev->intf->dev, 1554 "... iso period %d %sframes, wMaxPacket %04x\n", 1555 1 << (desc->bInterval - 1), 1556 (udev->speed == USB_SPEED_HIGH) ? "micro" : "", 1557 le16_to_cpu(desc->wMaxPacketSize)); 1558 1559 for (i = 0; i < param->sglen; i++) { 1560 urbs[i] = iso_alloc_urb(udev, pipe, desc, 1561 param->length, offset); 1562 if (!urbs[i]) { 1563 status = -ENOMEM; 1564 goto fail; 1565 } 1566 packets += urbs[i]->number_of_packets; 1567 urbs[i]->context = &context; 1568 } 1569 packets *= param->iterations; 1570 dev_info(&dev->intf->dev, 1571 "... total %lu msec (%lu packets)\n", 1572 (packets * (1 << (desc->bInterval - 1))) 1573 / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1), 1574 packets); 1575 1576 spin_lock_irq(&context.lock); 1577 for (i = 0; i < param->sglen; i++) { 1578 ++context.pending; 1579 status = usb_submit_urb(urbs[i], GFP_ATOMIC); 1580 if (status < 0) { 1581 ERROR(dev, "submit iso[%d], error %d\n", i, status); 1582 if (i == 0) { 1583 spin_unlock_irq(&context.lock); 1584 goto fail; 1585 } 1586 1587 simple_free_urb(urbs[i]); 1588 urbs[i] = NULL; 1589 context.pending--; 1590 context.submit_error = 1; 1591 break; 1592 } 1593 } 1594 spin_unlock_irq(&context.lock); 1595 1596 wait_for_completion(&context.done); 1597 1598 for (i = 0; i < param->sglen; i++) { 1599 if (urbs[i]) 1600 simple_free_urb(urbs[i]); 1601 } 1602 /* 1603 * Isochronous transfers are expected to fail sometimes. As an 1604 * arbitrary limit, we will report an error if any submissions 1605 * fail or if the transfer failure rate is > 10%. 1606 */ 1607 if (status != 0) 1608 ; 1609 else if (context.submit_error) 1610 status = -EACCES; 1611 else if (context.errors > context.packet_count / 10) 1612 status = -EIO; 1613 return status; 1614 1615 fail: 1616 for (i = 0; i < param->sglen; i++) { 1617 if (urbs[i]) 1618 simple_free_urb(urbs[i]); 1619 } 1620 return status; 1621 } 1622 1623 static int test_unaligned_bulk( 1624 struct usbtest_dev *tdev, 1625 int pipe, 1626 unsigned length, 1627 int iterations, 1628 unsigned transfer_flags, 1629 const char *label) 1630 { 1631 int retval; 1632 struct urb *urb = usbtest_alloc_urb( 1633 testdev_to_usbdev(tdev), pipe, length, transfer_flags, 1); 1634 1635 if (!urb) 1636 return -ENOMEM; 1637 1638 retval = simple_io(tdev, urb, iterations, 0, 0, label); 1639 simple_free_urb(urb); 1640 return retval; 1641 } 1642 1643 /*-------------------------------------------------------------------------*/ 1644 1645 /* We only have this one interface to user space, through usbfs. 1646 * User mode code can scan usbfs to find N different devices (maybe on 1647 * different busses) to use when testing, and allocate one thread per 1648 * test. So discovery is simplified, and we have no device naming issues. 1649 * 1650 * Don't use these only as stress/load tests. Use them along with with 1651 * other USB bus activity: plugging, unplugging, mousing, mp3 playback, 1652 * video capture, and so on. Run different tests at different times, in 1653 * different sequences. Nothing here should interact with other devices, 1654 * except indirectly by consuming USB bandwidth and CPU resources for test 1655 * threads and request completion. But the only way to know that for sure 1656 * is to test when HC queues are in use by many devices. 1657 * 1658 * WARNING: Because usbfs grabs udev->dev.sem before calling this ioctl(), 1659 * it locks out usbcore in certain code paths. Notably, if you disconnect 1660 * the device-under-test, khubd will wait block forever waiting for the 1661 * ioctl to complete ... so that usb_disconnect() can abort the pending 1662 * urbs and then call usbtest_disconnect(). To abort a test, you're best 1663 * off just killing the userspace task and waiting for it to exit. 1664 */ 1665 1666 /* No BKL needed */ 1667 static int 1668 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf) 1669 { 1670 struct usbtest_dev *dev = usb_get_intfdata(intf); 1671 struct usb_device *udev = testdev_to_usbdev(dev); 1672 struct usbtest_param *param = buf; 1673 int retval = -EOPNOTSUPP; 1674 struct urb *urb; 1675 struct scatterlist *sg; 1676 struct usb_sg_request req; 1677 struct timeval start; 1678 unsigned i; 1679 1680 /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */ 1681 1682 pattern = mod_pattern; 1683 1684 if (code != USBTEST_REQUEST) 1685 return -EOPNOTSUPP; 1686 1687 if (param->iterations <= 0) 1688 return -EINVAL; 1689 1690 if (mutex_lock_interruptible(&dev->lock)) 1691 return -ERESTARTSYS; 1692 1693 /* FIXME: What if a system sleep starts while a test is running? */ 1694 1695 /* some devices, like ez-usb default devices, need a non-default 1696 * altsetting to have any active endpoints. some tests change 1697 * altsettings; force a default so most tests don't need to check. 1698 */ 1699 if (dev->info->alt >= 0) { 1700 int res; 1701 1702 if (intf->altsetting->desc.bInterfaceNumber) { 1703 mutex_unlock(&dev->lock); 1704 return -ENODEV; 1705 } 1706 res = set_altsetting(dev, dev->info->alt); 1707 if (res) { 1708 dev_err(&intf->dev, 1709 "set altsetting to %d failed, %d\n", 1710 dev->info->alt, res); 1711 mutex_unlock(&dev->lock); 1712 return res; 1713 } 1714 } 1715 1716 /* 1717 * Just a bunch of test cases that every HCD is expected to handle. 1718 * 1719 * Some may need specific firmware, though it'd be good to have 1720 * one firmware image to handle all the test cases. 1721 * 1722 * FIXME add more tests! cancel requests, verify the data, control 1723 * queueing, concurrent read+write threads, and so on. 1724 */ 1725 do_gettimeofday(&start); 1726 switch (param->test_num) { 1727 1728 case 0: 1729 dev_info(&intf->dev, "TEST 0: NOP\n"); 1730 retval = 0; 1731 break; 1732 1733 /* Simple non-queued bulk I/O tests */ 1734 case 1: 1735 if (dev->out_pipe == 0) 1736 break; 1737 dev_info(&intf->dev, 1738 "TEST 1: write %d bytes %u times\n", 1739 param->length, param->iterations); 1740 urb = simple_alloc_urb(udev, dev->out_pipe, param->length); 1741 if (!urb) { 1742 retval = -ENOMEM; 1743 break; 1744 } 1745 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 1746 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1"); 1747 simple_free_urb(urb); 1748 break; 1749 case 2: 1750 if (dev->in_pipe == 0) 1751 break; 1752 dev_info(&intf->dev, 1753 "TEST 2: read %d bytes %u times\n", 1754 param->length, param->iterations); 1755 urb = simple_alloc_urb(udev, dev->in_pipe, param->length); 1756 if (!urb) { 1757 retval = -ENOMEM; 1758 break; 1759 } 1760 /* FIRMWARE: bulk source (maybe generates short writes) */ 1761 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2"); 1762 simple_free_urb(urb); 1763 break; 1764 case 3: 1765 if (dev->out_pipe == 0 || param->vary == 0) 1766 break; 1767 dev_info(&intf->dev, 1768 "TEST 3: write/%d 0..%d bytes %u times\n", 1769 param->vary, param->length, param->iterations); 1770 urb = simple_alloc_urb(udev, dev->out_pipe, param->length); 1771 if (!urb) { 1772 retval = -ENOMEM; 1773 break; 1774 } 1775 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 1776 retval = simple_io(dev, urb, param->iterations, param->vary, 1777 0, "test3"); 1778 simple_free_urb(urb); 1779 break; 1780 case 4: 1781 if (dev->in_pipe == 0 || param->vary == 0) 1782 break; 1783 dev_info(&intf->dev, 1784 "TEST 4: read/%d 0..%d bytes %u times\n", 1785 param->vary, param->length, param->iterations); 1786 urb = simple_alloc_urb(udev, dev->in_pipe, param->length); 1787 if (!urb) { 1788 retval = -ENOMEM; 1789 break; 1790 } 1791 /* FIRMWARE: bulk source (maybe generates short writes) */ 1792 retval = simple_io(dev, urb, param->iterations, param->vary, 1793 0, "test4"); 1794 simple_free_urb(urb); 1795 break; 1796 1797 /* Queued bulk I/O tests */ 1798 case 5: 1799 if (dev->out_pipe == 0 || param->sglen == 0) 1800 break; 1801 dev_info(&intf->dev, 1802 "TEST 5: write %d sglists %d entries of %d bytes\n", 1803 param->iterations, 1804 param->sglen, param->length); 1805 sg = alloc_sglist(param->sglen, param->length, 0); 1806 if (!sg) { 1807 retval = -ENOMEM; 1808 break; 1809 } 1810 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 1811 retval = perform_sglist(dev, param->iterations, dev->out_pipe, 1812 &req, sg, param->sglen); 1813 free_sglist(sg, param->sglen); 1814 break; 1815 1816 case 6: 1817 if (dev->in_pipe == 0 || param->sglen == 0) 1818 break; 1819 dev_info(&intf->dev, 1820 "TEST 6: read %d sglists %d entries of %d bytes\n", 1821 param->iterations, 1822 param->sglen, param->length); 1823 sg = alloc_sglist(param->sglen, param->length, 0); 1824 if (!sg) { 1825 retval = -ENOMEM; 1826 break; 1827 } 1828 /* FIRMWARE: bulk source (maybe generates short writes) */ 1829 retval = perform_sglist(dev, param->iterations, dev->in_pipe, 1830 &req, sg, param->sglen); 1831 free_sglist(sg, param->sglen); 1832 break; 1833 case 7: 1834 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0) 1835 break; 1836 dev_info(&intf->dev, 1837 "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n", 1838 param->vary, param->iterations, 1839 param->sglen, param->length); 1840 sg = alloc_sglist(param->sglen, param->length, param->vary); 1841 if (!sg) { 1842 retval = -ENOMEM; 1843 break; 1844 } 1845 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 1846 retval = perform_sglist(dev, param->iterations, dev->out_pipe, 1847 &req, sg, param->sglen); 1848 free_sglist(sg, param->sglen); 1849 break; 1850 case 8: 1851 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0) 1852 break; 1853 dev_info(&intf->dev, 1854 "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n", 1855 param->vary, param->iterations, 1856 param->sglen, param->length); 1857 sg = alloc_sglist(param->sglen, param->length, param->vary); 1858 if (!sg) { 1859 retval = -ENOMEM; 1860 break; 1861 } 1862 /* FIRMWARE: bulk source (maybe generates short writes) */ 1863 retval = perform_sglist(dev, param->iterations, dev->in_pipe, 1864 &req, sg, param->sglen); 1865 free_sglist(sg, param->sglen); 1866 break; 1867 1868 /* non-queued sanity tests for control (chapter 9 subset) */ 1869 case 9: 1870 retval = 0; 1871 dev_info(&intf->dev, 1872 "TEST 9: ch9 (subset) control tests, %d times\n", 1873 param->iterations); 1874 for (i = param->iterations; retval == 0 && i--; /* NOP */) 1875 retval = ch9_postconfig(dev); 1876 if (retval) 1877 dev_err(&intf->dev, "ch9 subset failed, " 1878 "iterations left %d\n", i); 1879 break; 1880 1881 /* queued control messaging */ 1882 case 10: 1883 if (param->sglen == 0) 1884 break; 1885 retval = 0; 1886 dev_info(&intf->dev, 1887 "TEST 10: queue %d control calls, %d times\n", 1888 param->sglen, 1889 param->iterations); 1890 retval = test_ctrl_queue(dev, param); 1891 break; 1892 1893 /* simple non-queued unlinks (ring with one urb) */ 1894 case 11: 1895 if (dev->in_pipe == 0 || !param->length) 1896 break; 1897 retval = 0; 1898 dev_info(&intf->dev, "TEST 11: unlink %d reads of %d\n", 1899 param->iterations, param->length); 1900 for (i = param->iterations; retval == 0 && i--; /* NOP */) 1901 retval = unlink_simple(dev, dev->in_pipe, 1902 param->length); 1903 if (retval) 1904 dev_err(&intf->dev, "unlink reads failed %d, " 1905 "iterations left %d\n", retval, i); 1906 break; 1907 case 12: 1908 if (dev->out_pipe == 0 || !param->length) 1909 break; 1910 retval = 0; 1911 dev_info(&intf->dev, "TEST 12: unlink %d writes of %d\n", 1912 param->iterations, param->length); 1913 for (i = param->iterations; retval == 0 && i--; /* NOP */) 1914 retval = unlink_simple(dev, dev->out_pipe, 1915 param->length); 1916 if (retval) 1917 dev_err(&intf->dev, "unlink writes failed %d, " 1918 "iterations left %d\n", retval, i); 1919 break; 1920 1921 /* ep halt tests */ 1922 case 13: 1923 if (dev->out_pipe == 0 && dev->in_pipe == 0) 1924 break; 1925 retval = 0; 1926 dev_info(&intf->dev, "TEST 13: set/clear %d halts\n", 1927 param->iterations); 1928 for (i = param->iterations; retval == 0 && i--; /* NOP */) 1929 retval = halt_simple(dev); 1930 1931 if (retval) 1932 ERROR(dev, "halts failed, iterations left %d\n", i); 1933 break; 1934 1935 /* control write tests */ 1936 case 14: 1937 if (!dev->info->ctrl_out) 1938 break; 1939 dev_info(&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n", 1940 param->iterations, 1941 realworld ? 1 : 0, param->length, 1942 param->vary); 1943 retval = ctrl_out(dev, param->iterations, 1944 param->length, param->vary, 0); 1945 break; 1946 1947 /* iso write tests */ 1948 case 15: 1949 if (dev->out_iso_pipe == 0 || param->sglen == 0) 1950 break; 1951 dev_info(&intf->dev, 1952 "TEST 15: write %d iso, %d entries of %d bytes\n", 1953 param->iterations, 1954 param->sglen, param->length); 1955 /* FIRMWARE: iso sink */ 1956 retval = test_iso_queue(dev, param, 1957 dev->out_iso_pipe, dev->iso_out, 0); 1958 break; 1959 1960 /* iso read tests */ 1961 case 16: 1962 if (dev->in_iso_pipe == 0 || param->sglen == 0) 1963 break; 1964 dev_info(&intf->dev, 1965 "TEST 16: read %d iso, %d entries of %d bytes\n", 1966 param->iterations, 1967 param->sglen, param->length); 1968 /* FIRMWARE: iso source */ 1969 retval = test_iso_queue(dev, param, 1970 dev->in_iso_pipe, dev->iso_in, 0); 1971 break; 1972 1973 /* FIXME unlink from queue (ring with N urbs) */ 1974 1975 /* FIXME scatterlist cancel (needs helper thread) */ 1976 1977 /* Tests for bulk I/O using DMA mapping by core and odd address */ 1978 case 17: 1979 if (dev->out_pipe == 0) 1980 break; 1981 dev_info(&intf->dev, 1982 "TEST 17: write odd addr %d bytes %u times core map\n", 1983 param->length, param->iterations); 1984 1985 retval = test_unaligned_bulk( 1986 dev, dev->out_pipe, 1987 param->length, param->iterations, 1988 0, "test17"); 1989 break; 1990 1991 case 18: 1992 if (dev->in_pipe == 0) 1993 break; 1994 dev_info(&intf->dev, 1995 "TEST 18: read odd addr %d bytes %u times core map\n", 1996 param->length, param->iterations); 1997 1998 retval = test_unaligned_bulk( 1999 dev, dev->in_pipe, 2000 param->length, param->iterations, 2001 0, "test18"); 2002 break; 2003 2004 /* Tests for bulk I/O using premapped coherent buffer and odd address */ 2005 case 19: 2006 if (dev->out_pipe == 0) 2007 break; 2008 dev_info(&intf->dev, 2009 "TEST 19: write odd addr %d bytes %u times premapped\n", 2010 param->length, param->iterations); 2011 2012 retval = test_unaligned_bulk( 2013 dev, dev->out_pipe, 2014 param->length, param->iterations, 2015 URB_NO_TRANSFER_DMA_MAP, "test19"); 2016 break; 2017 2018 case 20: 2019 if (dev->in_pipe == 0) 2020 break; 2021 dev_info(&intf->dev, 2022 "TEST 20: read odd addr %d bytes %u times premapped\n", 2023 param->length, param->iterations); 2024 2025 retval = test_unaligned_bulk( 2026 dev, dev->in_pipe, 2027 param->length, param->iterations, 2028 URB_NO_TRANSFER_DMA_MAP, "test20"); 2029 break; 2030 2031 /* control write tests with unaligned buffer */ 2032 case 21: 2033 if (!dev->info->ctrl_out) 2034 break; 2035 dev_info(&intf->dev, 2036 "TEST 21: %d ep0out odd addr, %d..%d vary %d\n", 2037 param->iterations, 2038 realworld ? 1 : 0, param->length, 2039 param->vary); 2040 retval = ctrl_out(dev, param->iterations, 2041 param->length, param->vary, 1); 2042 break; 2043 2044 /* unaligned iso tests */ 2045 case 22: 2046 if (dev->out_iso_pipe == 0 || param->sglen == 0) 2047 break; 2048 dev_info(&intf->dev, 2049 "TEST 22: write %d iso odd, %d entries of %d bytes\n", 2050 param->iterations, 2051 param->sglen, param->length); 2052 retval = test_iso_queue(dev, param, 2053 dev->out_iso_pipe, dev->iso_out, 1); 2054 break; 2055 2056 case 23: 2057 if (dev->in_iso_pipe == 0 || param->sglen == 0) 2058 break; 2059 dev_info(&intf->dev, 2060 "TEST 23: read %d iso odd, %d entries of %d bytes\n", 2061 param->iterations, 2062 param->sglen, param->length); 2063 retval = test_iso_queue(dev, param, 2064 dev->in_iso_pipe, dev->iso_in, 1); 2065 break; 2066 2067 } 2068 do_gettimeofday(¶m->duration); 2069 param->duration.tv_sec -= start.tv_sec; 2070 param->duration.tv_usec -= start.tv_usec; 2071 if (param->duration.tv_usec < 0) { 2072 param->duration.tv_usec += 1000 * 1000; 2073 param->duration.tv_sec -= 1; 2074 } 2075 mutex_unlock(&dev->lock); 2076 return retval; 2077 } 2078 2079 /*-------------------------------------------------------------------------*/ 2080 2081 static unsigned force_interrupt; 2082 module_param(force_interrupt, uint, 0); 2083 MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt"); 2084 2085 #ifdef GENERIC 2086 static unsigned short vendor; 2087 module_param(vendor, ushort, 0); 2088 MODULE_PARM_DESC(vendor, "vendor code (from usb-if)"); 2089 2090 static unsigned short product; 2091 module_param(product, ushort, 0); 2092 MODULE_PARM_DESC(product, "product code (from vendor)"); 2093 #endif 2094 2095 static int 2096 usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id) 2097 { 2098 struct usb_device *udev; 2099 struct usbtest_dev *dev; 2100 struct usbtest_info *info; 2101 char *rtest, *wtest; 2102 char *irtest, *iwtest; 2103 2104 udev = interface_to_usbdev(intf); 2105 2106 #ifdef GENERIC 2107 /* specify devices by module parameters? */ 2108 if (id->match_flags == 0) { 2109 /* vendor match required, product match optional */ 2110 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor) 2111 return -ENODEV; 2112 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product) 2113 return -ENODEV; 2114 dev_info(&intf->dev, "matched module params, " 2115 "vend=0x%04x prod=0x%04x\n", 2116 le16_to_cpu(udev->descriptor.idVendor), 2117 le16_to_cpu(udev->descriptor.idProduct)); 2118 } 2119 #endif 2120 2121 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2122 if (!dev) 2123 return -ENOMEM; 2124 info = (struct usbtest_info *) id->driver_info; 2125 dev->info = info; 2126 mutex_init(&dev->lock); 2127 2128 dev->intf = intf; 2129 2130 /* cacheline-aligned scratch for i/o */ 2131 dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL); 2132 if (dev->buf == NULL) { 2133 kfree(dev); 2134 return -ENOMEM; 2135 } 2136 2137 /* NOTE this doesn't yet test the handful of difference that are 2138 * visible with high speed interrupts: bigger maxpacket (1K) and 2139 * "high bandwidth" modes (up to 3 packets/uframe). 2140 */ 2141 rtest = wtest = ""; 2142 irtest = iwtest = ""; 2143 if (force_interrupt || udev->speed == USB_SPEED_LOW) { 2144 if (info->ep_in) { 2145 dev->in_pipe = usb_rcvintpipe(udev, info->ep_in); 2146 rtest = " intr-in"; 2147 } 2148 if (info->ep_out) { 2149 dev->out_pipe = usb_sndintpipe(udev, info->ep_out); 2150 wtest = " intr-out"; 2151 } 2152 } else { 2153 if (info->autoconf) { 2154 int status; 2155 2156 status = get_endpoints(dev, intf); 2157 if (status < 0) { 2158 WARNING(dev, "couldn't get endpoints, %d\n", 2159 status); 2160 return status; 2161 } 2162 /* may find bulk or ISO pipes */ 2163 } else { 2164 if (info->ep_in) 2165 dev->in_pipe = usb_rcvbulkpipe(udev, 2166 info->ep_in); 2167 if (info->ep_out) 2168 dev->out_pipe = usb_sndbulkpipe(udev, 2169 info->ep_out); 2170 } 2171 if (dev->in_pipe) 2172 rtest = " bulk-in"; 2173 if (dev->out_pipe) 2174 wtest = " bulk-out"; 2175 if (dev->in_iso_pipe) 2176 irtest = " iso-in"; 2177 if (dev->out_iso_pipe) 2178 iwtest = " iso-out"; 2179 } 2180 2181 usb_set_intfdata(intf, dev); 2182 dev_info(&intf->dev, "%s\n", info->name); 2183 dev_info(&intf->dev, "%s speed {control%s%s%s%s%s} tests%s\n", 2184 ({ char *tmp; 2185 switch (udev->speed) { 2186 case USB_SPEED_LOW: 2187 tmp = "low"; 2188 break; 2189 case USB_SPEED_FULL: 2190 tmp = "full"; 2191 break; 2192 case USB_SPEED_HIGH: 2193 tmp = "high"; 2194 break; 2195 default: 2196 tmp = "unknown"; 2197 break; 2198 }; tmp; }), 2199 info->ctrl_out ? " in/out" : "", 2200 rtest, wtest, 2201 irtest, iwtest, 2202 info->alt >= 0 ? " (+alt)" : ""); 2203 return 0; 2204 } 2205 2206 static int usbtest_suspend(struct usb_interface *intf, pm_message_t message) 2207 { 2208 return 0; 2209 } 2210 2211 static int usbtest_resume(struct usb_interface *intf) 2212 { 2213 return 0; 2214 } 2215 2216 2217 static void usbtest_disconnect(struct usb_interface *intf) 2218 { 2219 struct usbtest_dev *dev = usb_get_intfdata(intf); 2220 2221 usb_set_intfdata(intf, NULL); 2222 dev_dbg(&intf->dev, "disconnect\n"); 2223 kfree(dev); 2224 } 2225 2226 /* Basic testing only needs a device that can source or sink bulk traffic. 2227 * Any device can test control transfers (default with GENERIC binding). 2228 * 2229 * Several entries work with the default EP0 implementation that's built 2230 * into EZ-USB chips. There's a default vendor ID which can be overridden 2231 * by (very) small config EEPROMS, but otherwise all these devices act 2232 * identically until firmware is loaded: only EP0 works. It turns out 2233 * to be easy to make other endpoints work, without modifying that EP0 2234 * behavior. For now, we expect that kind of firmware. 2235 */ 2236 2237 /* an21xx or fx versions of ez-usb */ 2238 static struct usbtest_info ez1_info = { 2239 .name = "EZ-USB device", 2240 .ep_in = 2, 2241 .ep_out = 2, 2242 .alt = 1, 2243 }; 2244 2245 /* fx2 version of ez-usb */ 2246 static struct usbtest_info ez2_info = { 2247 .name = "FX2 device", 2248 .ep_in = 6, 2249 .ep_out = 2, 2250 .alt = 1, 2251 }; 2252 2253 /* ezusb family device with dedicated usb test firmware, 2254 */ 2255 static struct usbtest_info fw_info = { 2256 .name = "usb test device", 2257 .ep_in = 2, 2258 .ep_out = 2, 2259 .alt = 1, 2260 .autoconf = 1, /* iso and ctrl_out need autoconf */ 2261 .ctrl_out = 1, 2262 .iso = 1, /* iso_ep's are #8 in/out */ 2263 }; 2264 2265 /* peripheral running Linux and 'zero.c' test firmware, or 2266 * its user-mode cousin. different versions of this use 2267 * different hardware with the same vendor/product codes. 2268 * host side MUST rely on the endpoint descriptors. 2269 */ 2270 static struct usbtest_info gz_info = { 2271 .name = "Linux gadget zero", 2272 .autoconf = 1, 2273 .ctrl_out = 1, 2274 .alt = 0, 2275 }; 2276 2277 static struct usbtest_info um_info = { 2278 .name = "Linux user mode test driver", 2279 .autoconf = 1, 2280 .alt = -1, 2281 }; 2282 2283 static struct usbtest_info um2_info = { 2284 .name = "Linux user mode ISO test driver", 2285 .autoconf = 1, 2286 .iso = 1, 2287 .alt = -1, 2288 }; 2289 2290 #ifdef IBOT2 2291 /* this is a nice source of high speed bulk data; 2292 * uses an FX2, with firmware provided in the device 2293 */ 2294 static struct usbtest_info ibot2_info = { 2295 .name = "iBOT2 webcam", 2296 .ep_in = 2, 2297 .alt = -1, 2298 }; 2299 #endif 2300 2301 #ifdef GENERIC 2302 /* we can use any device to test control traffic */ 2303 static struct usbtest_info generic_info = { 2304 .name = "Generic USB device", 2305 .alt = -1, 2306 }; 2307 #endif 2308 2309 2310 static const struct usb_device_id id_table[] = { 2311 2312 /*-------------------------------------------------------------*/ 2313 2314 /* EZ-USB devices which download firmware to replace (or in our 2315 * case augment) the default device implementation. 2316 */ 2317 2318 /* generic EZ-USB FX controller */ 2319 { USB_DEVICE(0x0547, 0x2235), 2320 .driver_info = (unsigned long) &ez1_info, 2321 }, 2322 2323 /* CY3671 development board with EZ-USB FX */ 2324 { USB_DEVICE(0x0547, 0x0080), 2325 .driver_info = (unsigned long) &ez1_info, 2326 }, 2327 2328 /* generic EZ-USB FX2 controller (or development board) */ 2329 { USB_DEVICE(0x04b4, 0x8613), 2330 .driver_info = (unsigned long) &ez2_info, 2331 }, 2332 2333 /* re-enumerated usb test device firmware */ 2334 { USB_DEVICE(0xfff0, 0xfff0), 2335 .driver_info = (unsigned long) &fw_info, 2336 }, 2337 2338 /* "Gadget Zero" firmware runs under Linux */ 2339 { USB_DEVICE(0x0525, 0xa4a0), 2340 .driver_info = (unsigned long) &gz_info, 2341 }, 2342 2343 /* so does a user-mode variant */ 2344 { USB_DEVICE(0x0525, 0xa4a4), 2345 .driver_info = (unsigned long) &um_info, 2346 }, 2347 2348 /* ... and a user-mode variant that talks iso */ 2349 { USB_DEVICE(0x0525, 0xa4a3), 2350 .driver_info = (unsigned long) &um2_info, 2351 }, 2352 2353 #ifdef KEYSPAN_19Qi 2354 /* Keyspan 19qi uses an21xx (original EZ-USB) */ 2355 /* this does not coexist with the real Keyspan 19qi driver! */ 2356 { USB_DEVICE(0x06cd, 0x010b), 2357 .driver_info = (unsigned long) &ez1_info, 2358 }, 2359 #endif 2360 2361 /*-------------------------------------------------------------*/ 2362 2363 #ifdef IBOT2 2364 /* iBOT2 makes a nice source of high speed bulk-in data */ 2365 /* this does not coexist with a real iBOT2 driver! */ 2366 { USB_DEVICE(0x0b62, 0x0059), 2367 .driver_info = (unsigned long) &ibot2_info, 2368 }, 2369 #endif 2370 2371 /*-------------------------------------------------------------*/ 2372 2373 #ifdef GENERIC 2374 /* module params can specify devices to use for control tests */ 2375 { .driver_info = (unsigned long) &generic_info, }, 2376 #endif 2377 2378 /*-------------------------------------------------------------*/ 2379 2380 { } 2381 }; 2382 MODULE_DEVICE_TABLE(usb, id_table); 2383 2384 static struct usb_driver usbtest_driver = { 2385 .name = "usbtest", 2386 .id_table = id_table, 2387 .probe = usbtest_probe, 2388 .unlocked_ioctl = usbtest_ioctl, 2389 .disconnect = usbtest_disconnect, 2390 .suspend = usbtest_suspend, 2391 .resume = usbtest_resume, 2392 }; 2393 2394 /*-------------------------------------------------------------------------*/ 2395 2396 static int __init usbtest_init(void) 2397 { 2398 #ifdef GENERIC 2399 if (vendor) 2400 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product); 2401 #endif 2402 return usb_register(&usbtest_driver); 2403 } 2404 module_init(usbtest_init); 2405 2406 static void __exit usbtest_exit(void) 2407 { 2408 usb_deregister(&usbtest_driver); 2409 } 2410 module_exit(usbtest_exit); 2411 2412 MODULE_DESCRIPTION("USB Core/HCD Testing Driver"); 2413 MODULE_LICENSE("GPL"); 2414 2415