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#include <linux/timer.h> 11#include <linux/usb.h> 12 13#define SIMPLE_IO_TIMEOUT 10000 /* in milliseconds */ 14 15/*-------------------------------------------------------------------------*/ 16 17static int override_alt = -1; 18module_param_named(alt, override_alt, int, 0644); 19MODULE_PARM_DESC(alt, ">= 0 to override altsetting selection"); 20static void complicated_callback(struct urb *urb); 21 22/*-------------------------------------------------------------------------*/ 23 24/* FIXME make these public somewhere; usbdevfs.h? */ 25struct usbtest_param { 26 /* inputs */ 27 unsigned test_num; /* 0..(TEST_CASES-1) */ 28 unsigned iterations; 29 unsigned length; 30 unsigned vary; 31 unsigned sglen; 32 33 /* outputs */ 34 struct timeval duration; 35}; 36#define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param) 37 38/*-------------------------------------------------------------------------*/ 39 40#define GENERIC /* let probe() bind using module params */ 41 42/* Some devices that can be used for testing will have "real" drivers. 43 * Entries for those need to be enabled here by hand, after disabling 44 * that "real" driver. 45 */ 46//#define IBOT2 /* grab iBOT2 webcams */ 47//#define KEYSPAN_19Qi /* grab un-renumerated serial adapter */ 48 49/*-------------------------------------------------------------------------*/ 50 51struct usbtest_info { 52 const char *name; 53 u8 ep_in; /* bulk/intr source */ 54 u8 ep_out; /* bulk/intr sink */ 55 unsigned autoconf:1; 56 unsigned ctrl_out:1; 57 unsigned iso:1; /* try iso in/out */ 58 unsigned intr:1; /* try interrupt in/out */ 59 int alt; 60}; 61 62/* this is accessed only through usbfs ioctl calls. 63 * one ioctl to issue a test ... one lock per device. 64 * tests create other threads if they need them. 65 * urbs and buffers are allocated dynamically, 66 * and data generated deterministically. 67 */ 68struct usbtest_dev { 69 struct usb_interface *intf; 70 struct usbtest_info *info; 71 int in_pipe; 72 int out_pipe; 73 int in_iso_pipe; 74 int out_iso_pipe; 75 int in_int_pipe; 76 int out_int_pipe; 77 struct usb_endpoint_descriptor *iso_in, *iso_out; 78 struct usb_endpoint_descriptor *int_in, *int_out; 79 struct mutex lock; 80 81#define TBUF_SIZE 256 82 u8 *buf; 83}; 84 85static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test) 86{ 87 return interface_to_usbdev(test->intf); 88} 89 90/* set up all urbs so they can be used with either bulk or interrupt */ 91#define INTERRUPT_RATE 1 /* msec/transfer */ 92 93#define ERROR(tdev, fmt, args...) \ 94 dev_err(&(tdev)->intf->dev , fmt , ## args) 95#define WARNING(tdev, fmt, args...) \ 96 dev_warn(&(tdev)->intf->dev , fmt , ## args) 97 98#define GUARD_BYTE 0xA5 99#define MAX_SGLEN 128 100 101/*-------------------------------------------------------------------------*/ 102 103static int 104get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf) 105{ 106 int tmp; 107 struct usb_host_interface *alt; 108 struct usb_host_endpoint *in, *out; 109 struct usb_host_endpoint *iso_in, *iso_out; 110 struct usb_host_endpoint *int_in, *int_out; 111 struct usb_device *udev; 112 113 for (tmp = 0; tmp < intf->num_altsetting; tmp++) { 114 unsigned ep; 115 116 in = out = NULL; 117 iso_in = iso_out = NULL; 118 int_in = int_out = NULL; 119 alt = intf->altsetting + tmp; 120 121 if (override_alt >= 0 && 122 override_alt != alt->desc.bAlternateSetting) 123 continue; 124 125 /* take the first altsetting with in-bulk + out-bulk; 126 * ignore other endpoints and altsettings. 127 */ 128 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { 129 struct usb_host_endpoint *e; 130 131 e = alt->endpoint + ep; 132 switch (usb_endpoint_type(&e->desc)) { 133 case USB_ENDPOINT_XFER_BULK: 134 break; 135 case USB_ENDPOINT_XFER_INT: 136 if (dev->info->intr) 137 goto try_intr; 138 case USB_ENDPOINT_XFER_ISOC: 139 if (dev->info->iso) 140 goto try_iso; 141 /* FALLTHROUGH */ 142 default: 143 continue; 144 } 145 if (usb_endpoint_dir_in(&e->desc)) { 146 if (!in) 147 in = e; 148 } else { 149 if (!out) 150 out = e; 151 } 152 continue; 153try_intr: 154 if (usb_endpoint_dir_in(&e->desc)) { 155 if (!int_in) 156 int_in = e; 157 } else { 158 if (!int_out) 159 int_out = e; 160 } 161 continue; 162try_iso: 163 if (usb_endpoint_dir_in(&e->desc)) { 164 if (!iso_in) 165 iso_in = e; 166 } else { 167 if (!iso_out) 168 iso_out = e; 169 } 170 } 171 if ((in && out) || iso_in || iso_out || int_in || int_out) 172 goto found; 173 } 174 return -EINVAL; 175 176found: 177 udev = testdev_to_usbdev(dev); 178 dev->info->alt = alt->desc.bAlternateSetting; 179 if (alt->desc.bAlternateSetting != 0) { 180 tmp = usb_set_interface(udev, 181 alt->desc.bInterfaceNumber, 182 alt->desc.bAlternateSetting); 183 if (tmp < 0) 184 return tmp; 185 } 186 187 if (in) { 188 dev->in_pipe = usb_rcvbulkpipe(udev, 189 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 190 dev->out_pipe = usb_sndbulkpipe(udev, 191 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 192 } 193 if (iso_in) { 194 dev->iso_in = &iso_in->desc; 195 dev->in_iso_pipe = usb_rcvisocpipe(udev, 196 iso_in->desc.bEndpointAddress 197 & USB_ENDPOINT_NUMBER_MASK); 198 } 199 200 if (iso_out) { 201 dev->iso_out = &iso_out->desc; 202 dev->out_iso_pipe = usb_sndisocpipe(udev, 203 iso_out->desc.bEndpointAddress 204 & USB_ENDPOINT_NUMBER_MASK); 205 } 206 207 if (int_in) { 208 dev->int_in = &int_in->desc; 209 dev->in_int_pipe = usb_rcvintpipe(udev, 210 int_in->desc.bEndpointAddress 211 & USB_ENDPOINT_NUMBER_MASK); 212 } 213 214 if (int_out) { 215 dev->int_out = &int_out->desc; 216 dev->out_int_pipe = usb_sndintpipe(udev, 217 int_out->desc.bEndpointAddress 218 & USB_ENDPOINT_NUMBER_MASK); 219 } 220 return 0; 221} 222 223/*-------------------------------------------------------------------------*/ 224 225/* Support for testing basic non-queued I/O streams. 226 * 227 * These just package urbs as requests that can be easily canceled. 228 * Each urb's data buffer is dynamically allocated; callers can fill 229 * them with non-zero test data (or test for it) when appropriate. 230 */ 231 232static void simple_callback(struct urb *urb) 233{ 234 complete(urb->context); 235} 236 237static struct urb *usbtest_alloc_urb( 238 struct usb_device *udev, 239 int pipe, 240 unsigned long bytes, 241 unsigned transfer_flags, 242 unsigned offset, 243 u8 bInterval, 244 usb_complete_t complete_fn) 245{ 246 struct urb *urb; 247 248 urb = usb_alloc_urb(0, GFP_KERNEL); 249 if (!urb) 250 return urb; 251 252 if (bInterval) 253 usb_fill_int_urb(urb, udev, pipe, NULL, bytes, complete_fn, 254 NULL, bInterval); 255 else 256 usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, complete_fn, 257 NULL); 258 259 urb->interval = (udev->speed == USB_SPEED_HIGH) 260 ? (INTERRUPT_RATE << 3) 261 : INTERRUPT_RATE; 262 urb->transfer_flags = transfer_flags; 263 if (usb_pipein(pipe)) 264 urb->transfer_flags |= URB_SHORT_NOT_OK; 265 266 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 267 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset, 268 GFP_KERNEL, &urb->transfer_dma); 269 else 270 urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL); 271 272 if (!urb->transfer_buffer) { 273 usb_free_urb(urb); 274 return NULL; 275 } 276 277 /* To test unaligned transfers add an offset and fill the 278 unused memory with a guard value */ 279 if (offset) { 280 memset(urb->transfer_buffer, GUARD_BYTE, offset); 281 urb->transfer_buffer += offset; 282 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 283 urb->transfer_dma += offset; 284 } 285 286 /* For inbound transfers use guard byte so that test fails if 287 data not correctly copied */ 288 memset(urb->transfer_buffer, 289 usb_pipein(urb->pipe) ? GUARD_BYTE : 0, 290 bytes); 291 return urb; 292} 293 294static struct urb *simple_alloc_urb( 295 struct usb_device *udev, 296 int pipe, 297 unsigned long bytes, 298 u8 bInterval) 299{ 300 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0, 301 bInterval, simple_callback); 302} 303 304static struct urb *complicated_alloc_urb( 305 struct usb_device *udev, 306 int pipe, 307 unsigned long bytes, 308 u8 bInterval) 309{ 310 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0, 311 bInterval, complicated_callback); 312} 313 314static unsigned pattern; 315static unsigned mod_pattern; 316module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR); 317MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)"); 318 319static unsigned get_maxpacket(struct usb_device *udev, int pipe) 320{ 321 struct usb_host_endpoint *ep; 322 323 ep = usb_pipe_endpoint(udev, pipe); 324 return le16_to_cpup(&ep->desc.wMaxPacketSize); 325} 326 327static void simple_fill_buf(struct urb *urb) 328{ 329 unsigned i; 330 u8 *buf = urb->transfer_buffer; 331 unsigned len = urb->transfer_buffer_length; 332 unsigned maxpacket; 333 334 switch (pattern) { 335 default: 336 /* FALLTHROUGH */ 337 case 0: 338 memset(buf, 0, len); 339 break; 340 case 1: /* mod63 */ 341 maxpacket = get_maxpacket(urb->dev, urb->pipe); 342 for (i = 0; i < len; i++) 343 *buf++ = (u8) ((i % maxpacket) % 63); 344 break; 345 } 346} 347 348static inline unsigned long buffer_offset(void *buf) 349{ 350 return (unsigned long)buf & (ARCH_KMALLOC_MINALIGN - 1); 351} 352 353static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb) 354{ 355 u8 *buf = urb->transfer_buffer; 356 u8 *guard = buf - buffer_offset(buf); 357 unsigned i; 358 359 for (i = 0; guard < buf; i++, guard++) { 360 if (*guard != GUARD_BYTE) { 361 ERROR(tdev, "guard byte[%d] %d (not %d)\n", 362 i, *guard, GUARD_BYTE); 363 return -EINVAL; 364 } 365 } 366 return 0; 367} 368 369static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb) 370{ 371 unsigned i; 372 u8 expected; 373 u8 *buf = urb->transfer_buffer; 374 unsigned len = urb->actual_length; 375 unsigned maxpacket = get_maxpacket(urb->dev, urb->pipe); 376 377 int ret = check_guard_bytes(tdev, urb); 378 if (ret) 379 return ret; 380 381 for (i = 0; i < len; i++, buf++) { 382 switch (pattern) { 383 /* all-zeroes has no synchronization issues */ 384 case 0: 385 expected = 0; 386 break; 387 /* mod63 stays in sync with short-terminated transfers, 388 * or otherwise when host and gadget agree on how large 389 * each usb transfer request should be. resync is done 390 * with set_interface or set_config. 391 */ 392 case 1: /* mod63 */ 393 expected = (i % maxpacket) % 63; 394 break; 395 /* always fail unsupported patterns */ 396 default: 397 expected = !*buf; 398 break; 399 } 400 if (*buf == expected) 401 continue; 402 ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected); 403 return -EINVAL; 404 } 405 return 0; 406} 407 408static void simple_free_urb(struct urb *urb) 409{ 410 unsigned long offset = buffer_offset(urb->transfer_buffer); 411 412 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 413 usb_free_coherent( 414 urb->dev, 415 urb->transfer_buffer_length + offset, 416 urb->transfer_buffer - offset, 417 urb->transfer_dma - offset); 418 else 419 kfree(urb->transfer_buffer - offset); 420 usb_free_urb(urb); 421} 422 423static int simple_io( 424 struct usbtest_dev *tdev, 425 struct urb *urb, 426 int iterations, 427 int vary, 428 int expected, 429 const char *label 430) 431{ 432 struct usb_device *udev = urb->dev; 433 int max = urb->transfer_buffer_length; 434 struct completion completion; 435 int retval = 0; 436 unsigned long expire; 437 438 urb->context = &completion; 439 while (retval == 0 && iterations-- > 0) { 440 init_completion(&completion); 441 if (usb_pipeout(urb->pipe)) { 442 simple_fill_buf(urb); 443 urb->transfer_flags |= URB_ZERO_PACKET; 444 } 445 retval = usb_submit_urb(urb, GFP_KERNEL); 446 if (retval != 0) 447 break; 448 449 expire = msecs_to_jiffies(SIMPLE_IO_TIMEOUT); 450 if (!wait_for_completion_timeout(&completion, expire)) { 451 usb_kill_urb(urb); 452 retval = (urb->status == -ENOENT ? 453 -ETIMEDOUT : urb->status); 454 } else { 455 retval = urb->status; 456 } 457 458 urb->dev = udev; 459 if (retval == 0 && usb_pipein(urb->pipe)) 460 retval = simple_check_buf(tdev, urb); 461 462 if (vary) { 463 int len = urb->transfer_buffer_length; 464 465 len += vary; 466 len %= max; 467 if (len == 0) 468 len = (vary < max) ? vary : max; 469 urb->transfer_buffer_length = len; 470 } 471 472 /* FIXME if endpoint halted, clear halt (and log) */ 473 } 474 urb->transfer_buffer_length = max; 475 476 if (expected != retval) 477 dev_err(&udev->dev, 478 "%s failed, iterations left %d, status %d (not %d)\n", 479 label, iterations, retval, expected); 480 return retval; 481} 482 483 484/*-------------------------------------------------------------------------*/ 485 486/* We use scatterlist primitives to test queued I/O. 487 * Yes, this also tests the scatterlist primitives. 488 */ 489 490static void free_sglist(struct scatterlist *sg, int nents) 491{ 492 unsigned i; 493 494 if (!sg) 495 return; 496 for (i = 0; i < nents; i++) { 497 if (!sg_page(&sg[i])) 498 continue; 499 kfree(sg_virt(&sg[i])); 500 } 501 kfree(sg); 502} 503 504static struct scatterlist * 505alloc_sglist(int nents, int max, int vary, struct usbtest_dev *dev, int pipe) 506{ 507 struct scatterlist *sg; 508 unsigned int n_size = 0; 509 unsigned i; 510 unsigned size = max; 511 unsigned maxpacket = 512 get_maxpacket(interface_to_usbdev(dev->intf), pipe); 513 514 if (max == 0) 515 return NULL; 516 517 sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL); 518 if (!sg) 519 return NULL; 520 sg_init_table(sg, nents); 521 522 for (i = 0; i < nents; i++) { 523 char *buf; 524 unsigned j; 525 526 buf = kzalloc(size, GFP_KERNEL); 527 if (!buf) { 528 free_sglist(sg, i); 529 return NULL; 530 } 531 532 /* kmalloc pages are always physically contiguous! */ 533 sg_set_buf(&sg[i], buf, size); 534 535 switch (pattern) { 536 case 0: 537 /* already zeroed */ 538 break; 539 case 1: 540 for (j = 0; j < size; j++) 541 *buf++ = (u8) (((j + n_size) % maxpacket) % 63); 542 n_size += size; 543 break; 544 } 545 546 if (vary) { 547 size += vary; 548 size %= max; 549 if (size == 0) 550 size = (vary < max) ? vary : max; 551 } 552 } 553 554 return sg; 555} 556 557static void sg_timeout(unsigned long _req) 558{ 559 struct usb_sg_request *req = (struct usb_sg_request *) _req; 560 561 req->status = -ETIMEDOUT; 562 usb_sg_cancel(req); 563} 564 565static int perform_sglist( 566 struct usbtest_dev *tdev, 567 unsigned iterations, 568 int pipe, 569 struct usb_sg_request *req, 570 struct scatterlist *sg, 571 int nents 572) 573{ 574 struct usb_device *udev = testdev_to_usbdev(tdev); 575 int retval = 0; 576 struct timer_list sg_timer; 577 578 setup_timer_on_stack(&sg_timer, sg_timeout, (unsigned long) req); 579 580 while (retval == 0 && iterations-- > 0) { 581 retval = usb_sg_init(req, udev, pipe, 582 (udev->speed == USB_SPEED_HIGH) 583 ? (INTERRUPT_RATE << 3) 584 : INTERRUPT_RATE, 585 sg, nents, 0, GFP_KERNEL); 586 587 if (retval) 588 break; 589 mod_timer(&sg_timer, jiffies + 590 msecs_to_jiffies(SIMPLE_IO_TIMEOUT)); 591 usb_sg_wait(req); 592 del_timer_sync(&sg_timer); 593 retval = req->status; 594 595 /* FIXME check resulting data pattern */ 596 597 /* FIXME if endpoint halted, clear halt (and log) */ 598 } 599 600 /* FIXME for unlink or fault handling tests, don't report 601 * failure if retval is as we expected ... 602 */ 603 if (retval) 604 ERROR(tdev, "perform_sglist failed, " 605 "iterations left %d, status %d\n", 606 iterations, retval); 607 return retval; 608} 609 610 611/*-------------------------------------------------------------------------*/ 612 613/* unqueued control message testing 614 * 615 * there's a nice set of device functional requirements in chapter 9 of the 616 * usb 2.0 spec, which we can apply to ANY device, even ones that don't use 617 * special test firmware. 618 * 619 * we know the device is configured (or suspended) by the time it's visible 620 * through usbfs. we can't change that, so we won't test enumeration (which 621 * worked 'well enough' to get here, this time), power management (ditto), 622 * or remote wakeup (which needs human interaction). 623 */ 624 625static unsigned realworld = 1; 626module_param(realworld, uint, 0); 627MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance"); 628 629static int get_altsetting(struct usbtest_dev *dev) 630{ 631 struct usb_interface *iface = dev->intf; 632 struct usb_device *udev = interface_to_usbdev(iface); 633 int retval; 634 635 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 636 USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE, 637 0, iface->altsetting[0].desc.bInterfaceNumber, 638 dev->buf, 1, USB_CTRL_GET_TIMEOUT); 639 switch (retval) { 640 case 1: 641 return dev->buf[0]; 642 case 0: 643 retval = -ERANGE; 644 /* FALLTHROUGH */ 645 default: 646 return retval; 647 } 648} 649 650static int set_altsetting(struct usbtest_dev *dev, int alternate) 651{ 652 struct usb_interface *iface = dev->intf; 653 struct usb_device *udev; 654 655 if (alternate < 0 || alternate >= 256) 656 return -EINVAL; 657 658 udev = interface_to_usbdev(iface); 659 return usb_set_interface(udev, 660 iface->altsetting[0].desc.bInterfaceNumber, 661 alternate); 662} 663 664static int is_good_config(struct usbtest_dev *tdev, int len) 665{ 666 struct usb_config_descriptor *config; 667 668 if (len < sizeof(*config)) 669 return 0; 670 config = (struct usb_config_descriptor *) tdev->buf; 671 672 switch (config->bDescriptorType) { 673 case USB_DT_CONFIG: 674 case USB_DT_OTHER_SPEED_CONFIG: 675 if (config->bLength != 9) { 676 ERROR(tdev, "bogus config descriptor length\n"); 677 return 0; 678 } 679 /* this bit 'must be 1' but often isn't */ 680 if (!realworld && !(config->bmAttributes & 0x80)) { 681 ERROR(tdev, "high bit of config attributes not set\n"); 682 return 0; 683 } 684 if (config->bmAttributes & 0x1f) { /* reserved == 0 */ 685 ERROR(tdev, "reserved config bits set\n"); 686 return 0; 687 } 688 break; 689 default: 690 return 0; 691 } 692 693 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */ 694 return 1; 695 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */ 696 return 1; 697 ERROR(tdev, "bogus config descriptor read size\n"); 698 return 0; 699} 700 701static int is_good_ext(struct usbtest_dev *tdev, u8 *buf) 702{ 703 struct usb_ext_cap_descriptor *ext; 704 u32 attr; 705 706 ext = (struct usb_ext_cap_descriptor *) buf; 707 708 if (ext->bLength != USB_DT_USB_EXT_CAP_SIZE) { 709 ERROR(tdev, "bogus usb 2.0 extension descriptor length\n"); 710 return 0; 711 } 712 713 attr = le32_to_cpu(ext->bmAttributes); 714 /* bits[1:15] is used and others are reserved */ 715 if (attr & ~0xfffe) { /* reserved == 0 */ 716 ERROR(tdev, "reserved bits set\n"); 717 return 0; 718 } 719 720 return 1; 721} 722 723static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf) 724{ 725 struct usb_ss_cap_descriptor *ss; 726 727 ss = (struct usb_ss_cap_descriptor *) buf; 728 729 if (ss->bLength != USB_DT_USB_SS_CAP_SIZE) { 730 ERROR(tdev, "bogus superspeed device capability descriptor length\n"); 731 return 0; 732 } 733 734 /* 735 * only bit[1] of bmAttributes is used for LTM and others are 736 * reserved 737 */ 738 if (ss->bmAttributes & ~0x02) { /* reserved == 0 */ 739 ERROR(tdev, "reserved bits set in bmAttributes\n"); 740 return 0; 741 } 742 743 /* bits[0:3] of wSpeedSupported is used and others are reserved */ 744 if (le16_to_cpu(ss->wSpeedSupported) & ~0x0f) { /* reserved == 0 */ 745 ERROR(tdev, "reserved bits set in wSpeedSupported\n"); 746 return 0; 747 } 748 749 return 1; 750} 751 752static int is_good_con_id(struct usbtest_dev *tdev, u8 *buf) 753{ 754 struct usb_ss_container_id_descriptor *con_id; 755 756 con_id = (struct usb_ss_container_id_descriptor *) buf; 757 758 if (con_id->bLength != USB_DT_USB_SS_CONTN_ID_SIZE) { 759 ERROR(tdev, "bogus container id descriptor length\n"); 760 return 0; 761 } 762 763 if (con_id->bReserved) { /* reserved == 0 */ 764 ERROR(tdev, "reserved bits set\n"); 765 return 0; 766 } 767 768 return 1; 769} 770 771/* sanity test for standard requests working with usb_control_mesg() and some 772 * of the utility functions which use it. 773 * 774 * this doesn't test how endpoint halts behave or data toggles get set, since 775 * we won't do I/O to bulk/interrupt endpoints here (which is how to change 776 * halt or toggle). toggle testing is impractical without support from hcds. 777 * 778 * this avoids failing devices linux would normally work with, by not testing 779 * config/altsetting operations for devices that only support their defaults. 780 * such devices rarely support those needless operations. 781 * 782 * NOTE that since this is a sanity test, it's not examining boundary cases 783 * to see if usbcore, hcd, and device all behave right. such testing would 784 * involve varied read sizes and other operation sequences. 785 */ 786static int ch9_postconfig(struct usbtest_dev *dev) 787{ 788 struct usb_interface *iface = dev->intf; 789 struct usb_device *udev = interface_to_usbdev(iface); 790 int i, alt, retval; 791 792 /* [9.2.3] if there's more than one altsetting, we need to be able to 793 * set and get each one. mostly trusts the descriptors from usbcore. 794 */ 795 for (i = 0; i < iface->num_altsetting; i++) { 796 797 /* 9.2.3 constrains the range here */ 798 alt = iface->altsetting[i].desc.bAlternateSetting; 799 if (alt < 0 || alt >= iface->num_altsetting) { 800 dev_err(&iface->dev, 801 "invalid alt [%d].bAltSetting = %d\n", 802 i, alt); 803 } 804 805 /* [real world] get/set unimplemented if there's only one */ 806 if (realworld && iface->num_altsetting == 1) 807 continue; 808 809 /* [9.4.10] set_interface */ 810 retval = set_altsetting(dev, alt); 811 if (retval) { 812 dev_err(&iface->dev, "can't set_interface = %d, %d\n", 813 alt, retval); 814 return retval; 815 } 816 817 /* [9.4.4] get_interface always works */ 818 retval = get_altsetting(dev); 819 if (retval != alt) { 820 dev_err(&iface->dev, "get alt should be %d, was %d\n", 821 alt, retval); 822 return (retval < 0) ? retval : -EDOM; 823 } 824 825 } 826 827 /* [real world] get_config unimplemented if there's only one */ 828 if (!realworld || udev->descriptor.bNumConfigurations != 1) { 829 int expected = udev->actconfig->desc.bConfigurationValue; 830 831 /* [9.4.2] get_configuration always works 832 * ... although some cheap devices (like one TI Hub I've got) 833 * won't return config descriptors except before set_config. 834 */ 835 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 836 USB_REQ_GET_CONFIGURATION, 837 USB_DIR_IN | USB_RECIP_DEVICE, 838 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT); 839 if (retval != 1 || dev->buf[0] != expected) { 840 dev_err(&iface->dev, "get config --> %d %d (1 %d)\n", 841 retval, dev->buf[0], expected); 842 return (retval < 0) ? retval : -EDOM; 843 } 844 } 845 846 /* there's always [9.4.3] a device descriptor [9.6.1] */ 847 retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0, 848 dev->buf, sizeof(udev->descriptor)); 849 if (retval != sizeof(udev->descriptor)) { 850 dev_err(&iface->dev, "dev descriptor --> %d\n", retval); 851 return (retval < 0) ? retval : -EDOM; 852 } 853 854 /* 855 * there's always [9.4.3] a bos device descriptor [9.6.2] in USB 856 * 3.0 spec 857 */ 858 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0210) { 859 struct usb_bos_descriptor *bos = NULL; 860 struct usb_dev_cap_header *header = NULL; 861 unsigned total, num, length; 862 u8 *buf; 863 864 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf, 865 sizeof(*udev->bos->desc)); 866 if (retval != sizeof(*udev->bos->desc)) { 867 dev_err(&iface->dev, "bos descriptor --> %d\n", retval); 868 return (retval < 0) ? retval : -EDOM; 869 } 870 871 bos = (struct usb_bos_descriptor *)dev->buf; 872 total = le16_to_cpu(bos->wTotalLength); 873 num = bos->bNumDeviceCaps; 874 875 if (total > TBUF_SIZE) 876 total = TBUF_SIZE; 877 878 /* 879 * get generic device-level capability descriptors [9.6.2] 880 * in USB 3.0 spec 881 */ 882 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf, 883 total); 884 if (retval != total) { 885 dev_err(&iface->dev, "bos descriptor set --> %d\n", 886 retval); 887 return (retval < 0) ? retval : -EDOM; 888 } 889 890 length = sizeof(*udev->bos->desc); 891 buf = dev->buf; 892 for (i = 0; i < num; i++) { 893 buf += length; 894 if (buf + sizeof(struct usb_dev_cap_header) > 895 dev->buf + total) 896 break; 897 898 header = (struct usb_dev_cap_header *)buf; 899 length = header->bLength; 900 901 if (header->bDescriptorType != 902 USB_DT_DEVICE_CAPABILITY) { 903 dev_warn(&udev->dev, "not device capability descriptor, skip\n"); 904 continue; 905 } 906 907 switch (header->bDevCapabilityType) { 908 case USB_CAP_TYPE_EXT: 909 if (buf + USB_DT_USB_EXT_CAP_SIZE > 910 dev->buf + total || 911 !is_good_ext(dev, buf)) { 912 dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n"); 913 return -EDOM; 914 } 915 break; 916 case USB_SS_CAP_TYPE: 917 if (buf + USB_DT_USB_SS_CAP_SIZE > 918 dev->buf + total || 919 !is_good_ss_cap(dev, buf)) { 920 dev_err(&iface->dev, "bogus superspeed device capability descriptor\n"); 921 return -EDOM; 922 } 923 break; 924 case CONTAINER_ID_TYPE: 925 if (buf + USB_DT_USB_SS_CONTN_ID_SIZE > 926 dev->buf + total || 927 !is_good_con_id(dev, buf)) { 928 dev_err(&iface->dev, "bogus container id descriptor\n"); 929 return -EDOM; 930 } 931 break; 932 default: 933 break; 934 } 935 } 936 } 937 938 /* there's always [9.4.3] at least one config descriptor [9.6.3] */ 939 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) { 940 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i, 941 dev->buf, TBUF_SIZE); 942 if (!is_good_config(dev, retval)) { 943 dev_err(&iface->dev, 944 "config [%d] descriptor --> %d\n", 945 i, retval); 946 return (retval < 0) ? retval : -EDOM; 947 } 948 949 /* FIXME cross-checking udev->config[i] to make sure usbcore 950 * parsed it right (etc) would be good testing paranoia 951 */ 952 } 953 954 /* and sometimes [9.2.6.6] speed dependent descriptors */ 955 if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) { 956 struct usb_qualifier_descriptor *d = NULL; 957 958 /* device qualifier [9.6.2] */ 959 retval = usb_get_descriptor(udev, 960 USB_DT_DEVICE_QUALIFIER, 0, dev->buf, 961 sizeof(struct usb_qualifier_descriptor)); 962 if (retval == -EPIPE) { 963 if (udev->speed == USB_SPEED_HIGH) { 964 dev_err(&iface->dev, 965 "hs dev qualifier --> %d\n", 966 retval); 967 return (retval < 0) ? retval : -EDOM; 968 } 969 /* usb2.0 but not high-speed capable; fine */ 970 } else if (retval != sizeof(struct usb_qualifier_descriptor)) { 971 dev_err(&iface->dev, "dev qualifier --> %d\n", retval); 972 return (retval < 0) ? retval : -EDOM; 973 } else 974 d = (struct usb_qualifier_descriptor *) dev->buf; 975 976 /* might not have [9.6.2] any other-speed configs [9.6.4] */ 977 if (d) { 978 unsigned max = d->bNumConfigurations; 979 for (i = 0; i < max; i++) { 980 retval = usb_get_descriptor(udev, 981 USB_DT_OTHER_SPEED_CONFIG, i, 982 dev->buf, TBUF_SIZE); 983 if (!is_good_config(dev, retval)) { 984 dev_err(&iface->dev, 985 "other speed config --> %d\n", 986 retval); 987 return (retval < 0) ? retval : -EDOM; 988 } 989 } 990 } 991 } 992 /* FIXME fetch strings from at least the device descriptor */ 993 994 /* [9.4.5] get_status always works */ 995 retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf); 996 if (retval) { 997 dev_err(&iface->dev, "get dev status --> %d\n", retval); 998 return retval; 999 } 1000 1001 /* FIXME configuration.bmAttributes says if we could try to set/clear 1002 * the device's remote wakeup feature ... if we can, test that here 1003 */ 1004 1005 retval = usb_get_status(udev, USB_RECIP_INTERFACE, 1006 iface->altsetting[0].desc.bInterfaceNumber, dev->buf); 1007 if (retval) { 1008 dev_err(&iface->dev, "get interface status --> %d\n", retval); 1009 return retval; 1010 } 1011 /* FIXME get status for each endpoint in the interface */ 1012 1013 return 0; 1014} 1015 1016/*-------------------------------------------------------------------------*/ 1017 1018/* use ch9 requests to test whether: 1019 * (a) queues work for control, keeping N subtests queued and 1020 * active (auto-resubmit) for M loops through the queue. 1021 * (b) protocol stalls (control-only) will autorecover. 1022 * it's not like bulk/intr; no halt clearing. 1023 * (c) short control reads are reported and handled. 1024 * (d) queues are always processed in-order 1025 */ 1026 1027struct ctrl_ctx { 1028 spinlock_t lock; 1029 struct usbtest_dev *dev; 1030 struct completion complete; 1031 unsigned count; 1032 unsigned pending; 1033 int status; 1034 struct urb **urb; 1035 struct usbtest_param *param; 1036 int last; 1037}; 1038 1039#define NUM_SUBCASES 16 /* how many test subcases here? */ 1040 1041struct subcase { 1042 struct usb_ctrlrequest setup; 1043 int number; 1044 int expected; 1045}; 1046 1047static void ctrl_complete(struct urb *urb) 1048{ 1049 struct ctrl_ctx *ctx = urb->context; 1050 struct usb_ctrlrequest *reqp; 1051 struct subcase *subcase; 1052 int status = urb->status; 1053 1054 reqp = (struct usb_ctrlrequest *)urb->setup_packet; 1055 subcase = container_of(reqp, struct subcase, setup); 1056 1057 spin_lock(&ctx->lock); 1058 ctx->count--; 1059 ctx->pending--; 1060 1061 /* queue must transfer and complete in fifo order, unless 1062 * usb_unlink_urb() is used to unlink something not at the 1063 * physical queue head (not tested). 1064 */ 1065 if (subcase->number > 0) { 1066 if ((subcase->number - ctx->last) != 1) { 1067 ERROR(ctx->dev, 1068 "subcase %d completed out of order, last %d\n", 1069 subcase->number, ctx->last); 1070 status = -EDOM; 1071 ctx->last = subcase->number; 1072 goto error; 1073 } 1074 } 1075 ctx->last = subcase->number; 1076 1077 /* succeed or fault in only one way? */ 1078 if (status == subcase->expected) 1079 status = 0; 1080 1081 /* async unlink for cleanup? */ 1082 else if (status != -ECONNRESET) { 1083 1084 /* some faults are allowed, not required */ 1085 if (subcase->expected > 0 && ( 1086 ((status == -subcase->expected /* happened */ 1087 || status == 0)))) /* didn't */ 1088 status = 0; 1089 /* sometimes more than one fault is allowed */ 1090 else if (subcase->number == 12 && status == -EPIPE) 1091 status = 0; 1092 else 1093 ERROR(ctx->dev, "subtest %d error, status %d\n", 1094 subcase->number, status); 1095 } 1096 1097 /* unexpected status codes mean errors; ideally, in hardware */ 1098 if (status) { 1099error: 1100 if (ctx->status == 0) { 1101 int i; 1102 1103 ctx->status = status; 1104 ERROR(ctx->dev, "control queue %02x.%02x, err %d, " 1105 "%d left, subcase %d, len %d/%d\n", 1106 reqp->bRequestType, reqp->bRequest, 1107 status, ctx->count, subcase->number, 1108 urb->actual_length, 1109 urb->transfer_buffer_length); 1110 1111 /* FIXME this "unlink everything" exit route should 1112 * be a separate test case. 1113 */ 1114 1115 /* unlink whatever's still pending */ 1116 for (i = 1; i < ctx->param->sglen; i++) { 1117 struct urb *u = ctx->urb[ 1118 (i + subcase->number) 1119 % ctx->param->sglen]; 1120 1121 if (u == urb || !u->dev) 1122 continue; 1123 spin_unlock(&ctx->lock); 1124 status = usb_unlink_urb(u); 1125 spin_lock(&ctx->lock); 1126 switch (status) { 1127 case -EINPROGRESS: 1128 case -EBUSY: 1129 case -EIDRM: 1130 continue; 1131 default: 1132 ERROR(ctx->dev, "urb unlink --> %d\n", 1133 status); 1134 } 1135 } 1136 status = ctx->status; 1137 } 1138 } 1139 1140 /* resubmit if we need to, else mark this as done */ 1141 if ((status == 0) && (ctx->pending < ctx->count)) { 1142 status = usb_submit_urb(urb, GFP_ATOMIC); 1143 if (status != 0) { 1144 ERROR(ctx->dev, 1145 "can't resubmit ctrl %02x.%02x, err %d\n", 1146 reqp->bRequestType, reqp->bRequest, status); 1147 urb->dev = NULL; 1148 } else 1149 ctx->pending++; 1150 } else 1151 urb->dev = NULL; 1152 1153 /* signal completion when nothing's queued */ 1154 if (ctx->pending == 0) 1155 complete(&ctx->complete); 1156 spin_unlock(&ctx->lock); 1157} 1158 1159static int 1160test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param) 1161{ 1162 struct usb_device *udev = testdev_to_usbdev(dev); 1163 struct urb **urb; 1164 struct ctrl_ctx context; 1165 int i; 1166 1167 if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen) 1168 return -EOPNOTSUPP; 1169 1170 spin_lock_init(&context.lock); 1171 context.dev = dev; 1172 init_completion(&context.complete); 1173 context.count = param->sglen * param->iterations; 1174 context.pending = 0; 1175 context.status = -ENOMEM; 1176 context.param = param; 1177 context.last = -1; 1178 1179 /* allocate and init the urbs we'll queue. 1180 * as with bulk/intr sglists, sglen is the queue depth; it also 1181 * controls which subtests run (more tests than sglen) or rerun. 1182 */ 1183 urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL); 1184 if (!urb) 1185 return -ENOMEM; 1186 for (i = 0; i < param->sglen; i++) { 1187 int pipe = usb_rcvctrlpipe(udev, 0); 1188 unsigned len; 1189 struct urb *u; 1190 struct usb_ctrlrequest req; 1191 struct subcase *reqp; 1192 1193 /* sign of this variable means: 1194 * -: tested code must return this (negative) error code 1195 * +: tested code may return this (negative too) error code 1196 */ 1197 int expected = 0; 1198 1199 /* requests here are mostly expected to succeed on any 1200 * device, but some are chosen to trigger protocol stalls 1201 * or short reads. 1202 */ 1203 memset(&req, 0, sizeof(req)); 1204 req.bRequest = USB_REQ_GET_DESCRIPTOR; 1205 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE; 1206 1207 switch (i % NUM_SUBCASES) { 1208 case 0: /* get device descriptor */ 1209 req.wValue = cpu_to_le16(USB_DT_DEVICE << 8); 1210 len = sizeof(struct usb_device_descriptor); 1211 break; 1212 case 1: /* get first config descriptor (only) */ 1213 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1214 len = sizeof(struct usb_config_descriptor); 1215 break; 1216 case 2: /* get altsetting (OFTEN STALLS) */ 1217 req.bRequest = USB_REQ_GET_INTERFACE; 1218 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE; 1219 /* index = 0 means first interface */ 1220 len = 1; 1221 expected = EPIPE; 1222 break; 1223 case 3: /* get interface status */ 1224 req.bRequest = USB_REQ_GET_STATUS; 1225 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE; 1226 /* interface 0 */ 1227 len = 2; 1228 break; 1229 case 4: /* get device status */ 1230 req.bRequest = USB_REQ_GET_STATUS; 1231 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE; 1232 len = 2; 1233 break; 1234 case 5: /* get device qualifier (MAY STALL) */ 1235 req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8); 1236 len = sizeof(struct usb_qualifier_descriptor); 1237 if (udev->speed != USB_SPEED_HIGH) 1238 expected = EPIPE; 1239 break; 1240 case 6: /* get first config descriptor, plus interface */ 1241 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1242 len = sizeof(struct usb_config_descriptor); 1243 len += sizeof(struct usb_interface_descriptor); 1244 break; 1245 case 7: /* get interface descriptor (ALWAYS STALLS) */ 1246 req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8); 1247 /* interface == 0 */ 1248 len = sizeof(struct usb_interface_descriptor); 1249 expected = -EPIPE; 1250 break; 1251 /* NOTE: two consecutive stalls in the queue here. 1252 * that tests fault recovery a bit more aggressively. */ 1253 case 8: /* clear endpoint halt (MAY STALL) */ 1254 req.bRequest = USB_REQ_CLEAR_FEATURE; 1255 req.bRequestType = USB_RECIP_ENDPOINT; 1256 /* wValue 0 == ep halt */ 1257 /* wIndex 0 == ep0 (shouldn't halt!) */ 1258 len = 0; 1259 pipe = usb_sndctrlpipe(udev, 0); 1260 expected = EPIPE; 1261 break; 1262 case 9: /* get endpoint status */ 1263 req.bRequest = USB_REQ_GET_STATUS; 1264 req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT; 1265 /* endpoint 0 */ 1266 len = 2; 1267 break; 1268 case 10: /* trigger short read (EREMOTEIO) */ 1269 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1270 len = 1024; 1271 expected = -EREMOTEIO; 1272 break; 1273 /* NOTE: two consecutive _different_ faults in the queue. */ 1274 case 11: /* get endpoint descriptor (ALWAYS STALLS) */ 1275 req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8); 1276 /* endpoint == 0 */ 1277 len = sizeof(struct usb_interface_descriptor); 1278 expected = EPIPE; 1279 break; 1280 /* NOTE: sometimes even a third fault in the queue! */ 1281 case 12: /* get string 0 descriptor (MAY STALL) */ 1282 req.wValue = cpu_to_le16(USB_DT_STRING << 8); 1283 /* string == 0, for language IDs */ 1284 len = sizeof(struct usb_interface_descriptor); 1285 /* may succeed when > 4 languages */ 1286 expected = EREMOTEIO; /* or EPIPE, if no strings */ 1287 break; 1288 case 13: /* short read, resembling case 10 */ 1289 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1290 /* last data packet "should" be DATA1, not DATA0 */ 1291 if (udev->speed == USB_SPEED_SUPER) 1292 len = 1024 - 512; 1293 else 1294 len = 1024 - udev->descriptor.bMaxPacketSize0; 1295 expected = -EREMOTEIO; 1296 break; 1297 case 14: /* short read; try to fill the last packet */ 1298 req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0); 1299 /* device descriptor size == 18 bytes */ 1300 len = udev->descriptor.bMaxPacketSize0; 1301 if (udev->speed == USB_SPEED_SUPER) 1302 len = 512; 1303 switch (len) { 1304 case 8: 1305 len = 24; 1306 break; 1307 case 16: 1308 len = 32; 1309 break; 1310 } 1311 expected = -EREMOTEIO; 1312 break; 1313 case 15: 1314 req.wValue = cpu_to_le16(USB_DT_BOS << 8); 1315 if (udev->bos) 1316 len = le16_to_cpu(udev->bos->desc->wTotalLength); 1317 else 1318 len = sizeof(struct usb_bos_descriptor); 1319 if (le16_to_cpu(udev->descriptor.bcdUSB) < 0x0201) 1320 expected = -EPIPE; 1321 break; 1322 default: 1323 ERROR(dev, "bogus number of ctrl queue testcases!\n"); 1324 context.status = -EINVAL; 1325 goto cleanup; 1326 } 1327 req.wLength = cpu_to_le16(len); 1328 urb[i] = u = simple_alloc_urb(udev, pipe, len, 0); 1329 if (!u) 1330 goto cleanup; 1331 1332 reqp = kmalloc(sizeof(*reqp), GFP_KERNEL); 1333 if (!reqp) 1334 goto cleanup; 1335 reqp->setup = req; 1336 reqp->number = i % NUM_SUBCASES; 1337 reqp->expected = expected; 1338 u->setup_packet = (char *) &reqp->setup; 1339 1340 u->context = &context; 1341 u->complete = ctrl_complete; 1342 } 1343 1344 /* queue the urbs */ 1345 context.urb = urb; 1346 spin_lock_irq(&context.lock); 1347 for (i = 0; i < param->sglen; i++) { 1348 context.status = usb_submit_urb(urb[i], GFP_ATOMIC); 1349 if (context.status != 0) { 1350 ERROR(dev, "can't submit urb[%d], status %d\n", 1351 i, context.status); 1352 context.count = context.pending; 1353 break; 1354 } 1355 context.pending++; 1356 } 1357 spin_unlock_irq(&context.lock); 1358 1359 /* FIXME set timer and time out; provide a disconnect hook */ 1360 1361 /* wait for the last one to complete */ 1362 if (context.pending > 0) 1363 wait_for_completion(&context.complete); 1364 1365cleanup: 1366 for (i = 0; i < param->sglen; i++) { 1367 if (!urb[i]) 1368 continue; 1369 urb[i]->dev = udev; 1370 kfree(urb[i]->setup_packet); 1371 simple_free_urb(urb[i]); 1372 } 1373 kfree(urb); 1374 return context.status; 1375} 1376#undef NUM_SUBCASES 1377 1378 1379/*-------------------------------------------------------------------------*/ 1380 1381static void unlink1_callback(struct urb *urb) 1382{ 1383 int status = urb->status; 1384 1385 /* we "know" -EPIPE (stall) never happens */ 1386 if (!status) 1387 status = usb_submit_urb(urb, GFP_ATOMIC); 1388 if (status) { 1389 urb->status = status; 1390 complete(urb->context); 1391 } 1392} 1393 1394static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async) 1395{ 1396 struct urb *urb; 1397 struct completion completion; 1398 int retval = 0; 1399 1400 init_completion(&completion); 1401 urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size, 0); 1402 if (!urb) 1403 return -ENOMEM; 1404 urb->context = &completion; 1405 urb->complete = unlink1_callback; 1406 1407 if (usb_pipeout(urb->pipe)) { 1408 simple_fill_buf(urb); 1409 urb->transfer_flags |= URB_ZERO_PACKET; 1410 } 1411 1412 /* keep the endpoint busy. there are lots of hc/hcd-internal 1413 * states, and testing should get to all of them over time. 1414 * 1415 * FIXME want additional tests for when endpoint is STALLing 1416 * due to errors, or is just NAKing requests. 1417 */ 1418 retval = usb_submit_urb(urb, GFP_KERNEL); 1419 if (retval != 0) { 1420 dev_err(&dev->intf->dev, "submit fail %d\n", retval); 1421 return retval; 1422 } 1423 1424 /* unlinking that should always work. variable delay tests more 1425 * hcd states and code paths, even with little other system load. 1426 */ 1427 msleep(jiffies % (2 * INTERRUPT_RATE)); 1428 if (async) { 1429 while (!completion_done(&completion)) { 1430 retval = usb_unlink_urb(urb); 1431 1432 if (retval == 0 && usb_pipein(urb->pipe)) 1433 retval = simple_check_buf(dev, urb); 1434 1435 switch (retval) { 1436 case -EBUSY: 1437 case -EIDRM: 1438 /* we can't unlink urbs while they're completing 1439 * or if they've completed, and we haven't 1440 * resubmitted. "normal" drivers would prevent 1441 * resubmission, but since we're testing unlink 1442 * paths, we can't. 1443 */ 1444 ERROR(dev, "unlink retry\n"); 1445 continue; 1446 case 0: 1447 case -EINPROGRESS: 1448 break; 1449 1450 default: 1451 dev_err(&dev->intf->dev, 1452 "unlink fail %d\n", retval); 1453 return retval; 1454 } 1455 1456 break; 1457 } 1458 } else 1459 usb_kill_urb(urb); 1460 1461 wait_for_completion(&completion); 1462 retval = urb->status; 1463 simple_free_urb(urb); 1464 1465 if (async) 1466 return (retval == -ECONNRESET) ? 0 : retval - 1000; 1467 else 1468 return (retval == -ENOENT || retval == -EPERM) ? 1469 0 : retval - 2000; 1470} 1471 1472static int unlink_simple(struct usbtest_dev *dev, int pipe, int len) 1473{ 1474 int retval = 0; 1475 1476 /* test sync and async paths */ 1477 retval = unlink1(dev, pipe, len, 1); 1478 if (!retval) 1479 retval = unlink1(dev, pipe, len, 0); 1480 return retval; 1481} 1482 1483/*-------------------------------------------------------------------------*/ 1484 1485struct queued_ctx { 1486 struct completion complete; 1487 atomic_t pending; 1488 unsigned num; 1489 int status; 1490 struct urb **urbs; 1491}; 1492 1493static void unlink_queued_callback(struct urb *urb) 1494{ 1495 int status = urb->status; 1496 struct queued_ctx *ctx = urb->context; 1497 1498 if (ctx->status) 1499 goto done; 1500 if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) { 1501 if (status == -ECONNRESET) 1502 goto done; 1503 /* What error should we report if the URB completed normally? */ 1504 } 1505 if (status != 0) 1506 ctx->status = status; 1507 1508 done: 1509 if (atomic_dec_and_test(&ctx->pending)) 1510 complete(&ctx->complete); 1511} 1512 1513static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num, 1514 unsigned size) 1515{ 1516 struct queued_ctx ctx; 1517 struct usb_device *udev = testdev_to_usbdev(dev); 1518 void *buf; 1519 dma_addr_t buf_dma; 1520 int i; 1521 int retval = -ENOMEM; 1522 1523 init_completion(&ctx.complete); 1524 atomic_set(&ctx.pending, 1); /* One more than the actual value */ 1525 ctx.num = num; 1526 ctx.status = 0; 1527 1528 buf = usb_alloc_coherent(udev, size, GFP_KERNEL, &buf_dma); 1529 if (!buf) 1530 return retval; 1531 memset(buf, 0, size); 1532 1533 /* Allocate and init the urbs we'll queue */ 1534 ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL); 1535 if (!ctx.urbs) 1536 goto free_buf; 1537 for (i = 0; i < num; i++) { 1538 ctx.urbs[i] = usb_alloc_urb(0, GFP_KERNEL); 1539 if (!ctx.urbs[i]) 1540 goto free_urbs; 1541 usb_fill_bulk_urb(ctx.urbs[i], udev, pipe, buf, size, 1542 unlink_queued_callback, &ctx); 1543 ctx.urbs[i]->transfer_dma = buf_dma; 1544 ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; 1545 1546 if (usb_pipeout(ctx.urbs[i]->pipe)) { 1547 simple_fill_buf(ctx.urbs[i]); 1548 ctx.urbs[i]->transfer_flags |= URB_ZERO_PACKET; 1549 } 1550 } 1551 1552 /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */ 1553 for (i = 0; i < num; i++) { 1554 atomic_inc(&ctx.pending); 1555 retval = usb_submit_urb(ctx.urbs[i], GFP_KERNEL); 1556 if (retval != 0) { 1557 dev_err(&dev->intf->dev, "submit urbs[%d] fail %d\n", 1558 i, retval); 1559 atomic_dec(&ctx.pending); 1560 ctx.status = retval; 1561 break; 1562 } 1563 } 1564 if (i == num) { 1565 usb_unlink_urb(ctx.urbs[num - 4]); 1566 usb_unlink_urb(ctx.urbs[num - 2]); 1567 } else { 1568 while (--i >= 0) 1569 usb_unlink_urb(ctx.urbs[i]); 1570 } 1571 1572 if (atomic_dec_and_test(&ctx.pending)) /* The extra count */ 1573 complete(&ctx.complete); 1574 wait_for_completion(&ctx.complete); 1575 retval = ctx.status; 1576 1577 free_urbs: 1578 for (i = 0; i < num; i++) 1579 usb_free_urb(ctx.urbs[i]); 1580 kfree(ctx.urbs); 1581 free_buf: 1582 usb_free_coherent(udev, size, buf, buf_dma); 1583 return retval; 1584} 1585 1586/*-------------------------------------------------------------------------*/ 1587 1588static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) 1589{ 1590 int retval; 1591 u16 status; 1592 1593 /* shouldn't look or act halted */ 1594 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status); 1595 if (retval < 0) { 1596 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n", 1597 ep, retval); 1598 return retval; 1599 } 1600 if (status != 0) { 1601 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status); 1602 return -EINVAL; 1603 } 1604 retval = simple_io(tdev, urb, 1, 0, 0, __func__); 1605 if (retval != 0) 1606 return -EINVAL; 1607 return 0; 1608} 1609 1610static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) 1611{ 1612 int retval; 1613 u16 status; 1614 1615 /* should look and act halted */ 1616 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status); 1617 if (retval < 0) { 1618 ERROR(tdev, "ep %02x couldn't get halt status, %d\n", 1619 ep, retval); 1620 return retval; 1621 } 1622 if (status != 1) { 1623 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status); 1624 return -EINVAL; 1625 } 1626 retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__); 1627 if (retval != -EPIPE) 1628 return -EINVAL; 1629 retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted"); 1630 if (retval != -EPIPE) 1631 return -EINVAL; 1632 return 0; 1633} 1634 1635static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb) 1636{ 1637 int retval; 1638 1639 /* shouldn't look or act halted now */ 1640 retval = verify_not_halted(tdev, ep, urb); 1641 if (retval < 0) 1642 return retval; 1643 1644 /* set halt (protocol test only), verify it worked */ 1645 retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0), 1646 USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT, 1647 USB_ENDPOINT_HALT, ep, 1648 NULL, 0, USB_CTRL_SET_TIMEOUT); 1649 if (retval < 0) { 1650 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval); 1651 return retval; 1652 } 1653 retval = verify_halted(tdev, ep, urb); 1654 if (retval < 0) { 1655 int ret; 1656 1657 /* clear halt anyways, else further tests will fail */ 1658 ret = usb_clear_halt(urb->dev, urb->pipe); 1659 if (ret) 1660 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", 1661 ep, ret); 1662 1663 return retval; 1664 } 1665 1666 /* clear halt (tests API + protocol), verify it worked */ 1667 retval = usb_clear_halt(urb->dev, urb->pipe); 1668 if (retval < 0) { 1669 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval); 1670 return retval; 1671 } 1672 retval = verify_not_halted(tdev, ep, urb); 1673 if (retval < 0) 1674 return retval; 1675 1676 /* NOTE: could also verify SET_INTERFACE clear halts ... */ 1677 1678 return 0; 1679} 1680 1681static int halt_simple(struct usbtest_dev *dev) 1682{ 1683 int ep; 1684 int retval = 0; 1685 struct urb *urb; 1686 struct usb_device *udev = testdev_to_usbdev(dev); 1687 1688 if (udev->speed == USB_SPEED_SUPER) 1689 urb = simple_alloc_urb(udev, 0, 1024, 0); 1690 else 1691 urb = simple_alloc_urb(udev, 0, 512, 0); 1692 if (urb == NULL) 1693 return -ENOMEM; 1694 1695 if (dev->in_pipe) { 1696 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN; 1697 urb->pipe = dev->in_pipe; 1698 retval = test_halt(dev, ep, urb); 1699 if (retval < 0) 1700 goto done; 1701 } 1702 1703 if (dev->out_pipe) { 1704 ep = usb_pipeendpoint(dev->out_pipe); 1705 urb->pipe = dev->out_pipe; 1706 retval = test_halt(dev, ep, urb); 1707 } 1708done: 1709 simple_free_urb(urb); 1710 return retval; 1711} 1712 1713/*-------------------------------------------------------------------------*/ 1714 1715/* Control OUT tests use the vendor control requests from Intel's 1716 * USB 2.0 compliance test device: write a buffer, read it back. 1717 * 1718 * Intel's spec only _requires_ that it work for one packet, which 1719 * is pretty weak. Some HCDs place limits here; most devices will 1720 * need to be able to handle more than one OUT data packet. We'll 1721 * try whatever we're told to try. 1722 */ 1723static int ctrl_out(struct usbtest_dev *dev, 1724 unsigned count, unsigned length, unsigned vary, unsigned offset) 1725{ 1726 unsigned i, j, len; 1727 int retval; 1728 u8 *buf; 1729 char *what = "?"; 1730 struct usb_device *udev; 1731 1732 if (length < 1 || length > 0xffff || vary >= length) 1733 return -EINVAL; 1734 1735 buf = kmalloc(length + offset, GFP_KERNEL); 1736 if (!buf) 1737 return -ENOMEM; 1738 1739 buf += offset; 1740 udev = testdev_to_usbdev(dev); 1741 len = length; 1742 retval = 0; 1743 1744 /* NOTE: hardware might well act differently if we pushed it 1745 * with lots back-to-back queued requests. 1746 */ 1747 for (i = 0; i < count; i++) { 1748 /* write patterned data */ 1749 for (j = 0; j < len; j++) 1750 buf[j] = (u8)(i + j); 1751 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 1752 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR, 1753 0, 0, buf, len, USB_CTRL_SET_TIMEOUT); 1754 if (retval != len) { 1755 what = "write"; 1756 if (retval >= 0) { 1757 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n", 1758 retval, len); 1759 retval = -EBADMSG; 1760 } 1761 break; 1762 } 1763 1764 /* read it back -- assuming nothing intervened!! */ 1765 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 1766 0x5c, USB_DIR_IN|USB_TYPE_VENDOR, 1767 0, 0, buf, len, USB_CTRL_GET_TIMEOUT); 1768 if (retval != len) { 1769 what = "read"; 1770 if (retval >= 0) { 1771 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n", 1772 retval, len); 1773 retval = -EBADMSG; 1774 } 1775 break; 1776 } 1777 1778 /* fail if we can't verify */ 1779 for (j = 0; j < len; j++) { 1780 if (buf[j] != (u8)(i + j)) { 1781 ERROR(dev, "ctrl_out, byte %d is %d not %d\n", 1782 j, buf[j], (u8)(i + j)); 1783 retval = -EBADMSG; 1784 break; 1785 } 1786 } 1787 if (retval < 0) { 1788 what = "verify"; 1789 break; 1790 } 1791 1792 len += vary; 1793 1794 /* [real world] the "zero bytes IN" case isn't really used. 1795 * hardware can easily trip up in this weird case, since its 1796 * status stage is IN, not OUT like other ep0in transfers. 1797 */ 1798 if (len > length) 1799 len = realworld ? 1 : 0; 1800 } 1801 1802 if (retval < 0) 1803 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n", 1804 what, retval, i); 1805 1806 kfree(buf - offset); 1807 return retval; 1808} 1809 1810/*-------------------------------------------------------------------------*/ 1811 1812/* ISO/BULK tests ... mimics common usage 1813 * - buffer length is split into N packets (mostly maxpacket sized) 1814 * - multi-buffers according to sglen 1815 */ 1816 1817struct transfer_context { 1818 unsigned count; 1819 unsigned pending; 1820 spinlock_t lock; 1821 struct completion done; 1822 int submit_error; 1823 unsigned long errors; 1824 unsigned long packet_count; 1825 struct usbtest_dev *dev; 1826 bool is_iso; 1827}; 1828 1829static void complicated_callback(struct urb *urb) 1830{ 1831 struct transfer_context *ctx = urb->context; 1832 1833 spin_lock(&ctx->lock); 1834 ctx->count--; 1835 1836 ctx->packet_count += urb->number_of_packets; 1837 if (urb->error_count > 0) 1838 ctx->errors += urb->error_count; 1839 else if (urb->status != 0) 1840 ctx->errors += (ctx->is_iso ? urb->number_of_packets : 1); 1841 else if (urb->actual_length != urb->transfer_buffer_length) 1842 ctx->errors++; 1843 else if (check_guard_bytes(ctx->dev, urb) != 0) 1844 ctx->errors++; 1845 1846 if (urb->status == 0 && ctx->count > (ctx->pending - 1) 1847 && !ctx->submit_error) { 1848 int status = usb_submit_urb(urb, GFP_ATOMIC); 1849 switch (status) { 1850 case 0: 1851 goto done; 1852 default: 1853 dev_err(&ctx->dev->intf->dev, 1854 "iso resubmit err %d\n", 1855 status); 1856 /* FALLTHROUGH */ 1857 case -ENODEV: /* disconnected */ 1858 case -ESHUTDOWN: /* endpoint disabled */ 1859 ctx->submit_error = 1; 1860 break; 1861 } 1862 } 1863 1864 ctx->pending--; 1865 if (ctx->pending == 0) { 1866 if (ctx->errors) 1867 dev_err(&ctx->dev->intf->dev, 1868 "iso test, %lu errors out of %lu\n", 1869 ctx->errors, ctx->packet_count); 1870 complete(&ctx->done); 1871 } 1872done: 1873 spin_unlock(&ctx->lock); 1874} 1875 1876static struct urb *iso_alloc_urb( 1877 struct usb_device *udev, 1878 int pipe, 1879 struct usb_endpoint_descriptor *desc, 1880 long bytes, 1881 unsigned offset 1882) 1883{ 1884 struct urb *urb; 1885 unsigned i, maxp, packets; 1886 1887 if (bytes < 0 || !desc) 1888 return NULL; 1889 maxp = 0x7ff & usb_endpoint_maxp(desc); 1890 maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11)); 1891 packets = DIV_ROUND_UP(bytes, maxp); 1892 1893 urb = usb_alloc_urb(packets, GFP_KERNEL); 1894 if (!urb) 1895 return urb; 1896 urb->dev = udev; 1897 urb->pipe = pipe; 1898 1899 urb->number_of_packets = packets; 1900 urb->transfer_buffer_length = bytes; 1901 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset, 1902 GFP_KERNEL, 1903 &urb->transfer_dma); 1904 if (!urb->transfer_buffer) { 1905 usb_free_urb(urb); 1906 return NULL; 1907 } 1908 if (offset) { 1909 memset(urb->transfer_buffer, GUARD_BYTE, offset); 1910 urb->transfer_buffer += offset; 1911 urb->transfer_dma += offset; 1912 } 1913 /* For inbound transfers use guard byte so that test fails if 1914 data not correctly copied */ 1915 memset(urb->transfer_buffer, 1916 usb_pipein(urb->pipe) ? GUARD_BYTE : 0, 1917 bytes); 1918 1919 for (i = 0; i < packets; i++) { 1920 /* here, only the last packet will be short */ 1921 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp); 1922 bytes -= urb->iso_frame_desc[i].length; 1923 1924 urb->iso_frame_desc[i].offset = maxp * i; 1925 } 1926 1927 urb->complete = complicated_callback; 1928 /* urb->context = SET BY CALLER */ 1929 urb->interval = 1 << (desc->bInterval - 1); 1930 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 1931 return urb; 1932} 1933 1934static int 1935test_queue(struct usbtest_dev *dev, struct usbtest_param *param, 1936 int pipe, struct usb_endpoint_descriptor *desc, unsigned offset) 1937{ 1938 struct transfer_context context; 1939 struct usb_device *udev; 1940 unsigned i; 1941 unsigned long packets = 0; 1942 int status = 0; 1943 struct urb *urbs[param->sglen]; 1944 1945 memset(&context, 0, sizeof(context)); 1946 context.count = param->iterations * param->sglen; 1947 context.dev = dev; 1948 context.is_iso = !!desc; 1949 init_completion(&context.done); 1950 spin_lock_init(&context.lock); 1951 1952 udev = testdev_to_usbdev(dev); 1953 1954 for (i = 0; i < param->sglen; i++) { 1955 if (context.is_iso) 1956 urbs[i] = iso_alloc_urb(udev, pipe, desc, 1957 param->length, offset); 1958 else 1959 urbs[i] = complicated_alloc_urb(udev, pipe, 1960 param->length, 0); 1961 1962 if (!urbs[i]) { 1963 status = -ENOMEM; 1964 goto fail; 1965 } 1966 packets += urbs[i]->number_of_packets; 1967 urbs[i]->context = &context; 1968 } 1969 packets *= param->iterations; 1970 1971 if (context.is_iso) { 1972 dev_info(&dev->intf->dev, 1973 "iso period %d %sframes, wMaxPacket %d, transactions: %d\n", 1974 1 << (desc->bInterval - 1), 1975 (udev->speed == USB_SPEED_HIGH) ? "micro" : "", 1976 usb_endpoint_maxp(desc) & 0x7ff, 1977 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11))); 1978 1979 dev_info(&dev->intf->dev, 1980 "total %lu msec (%lu packets)\n", 1981 (packets * (1 << (desc->bInterval - 1))) 1982 / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1), 1983 packets); 1984 } 1985 1986 spin_lock_irq(&context.lock); 1987 for (i = 0; i < param->sglen; i++) { 1988 ++context.pending; 1989 status = usb_submit_urb(urbs[i], GFP_ATOMIC); 1990 if (status < 0) { 1991 ERROR(dev, "submit iso[%d], error %d\n", i, status); 1992 if (i == 0) { 1993 spin_unlock_irq(&context.lock); 1994 goto fail; 1995 } 1996 1997 simple_free_urb(urbs[i]); 1998 urbs[i] = NULL; 1999 context.pending--; 2000 context.submit_error = 1; 2001 break; 2002 } 2003 } 2004 spin_unlock_irq(&context.lock); 2005 2006 wait_for_completion(&context.done); 2007 2008 for (i = 0; i < param->sglen; i++) { 2009 if (urbs[i]) 2010 simple_free_urb(urbs[i]); 2011 } 2012 /* 2013 * Isochronous transfers are expected to fail sometimes. As an 2014 * arbitrary limit, we will report an error if any submissions 2015 * fail or if the transfer failure rate is > 10%. 2016 */ 2017 if (status != 0) 2018 ; 2019 else if (context.submit_error) 2020 status = -EACCES; 2021 else if (context.errors > 2022 (context.is_iso ? context.packet_count / 10 : 0)) 2023 status = -EIO; 2024 return status; 2025 2026fail: 2027 for (i = 0; i < param->sglen; i++) { 2028 if (urbs[i]) 2029 simple_free_urb(urbs[i]); 2030 } 2031 return status; 2032} 2033 2034static int test_unaligned_bulk( 2035 struct usbtest_dev *tdev, 2036 int pipe, 2037 unsigned length, 2038 int iterations, 2039 unsigned transfer_flags, 2040 const char *label) 2041{ 2042 int retval; 2043 struct urb *urb = usbtest_alloc_urb(testdev_to_usbdev(tdev), 2044 pipe, length, transfer_flags, 1, 0, simple_callback); 2045 2046 if (!urb) 2047 return -ENOMEM; 2048 2049 retval = simple_io(tdev, urb, iterations, 0, 0, label); 2050 simple_free_urb(urb); 2051 return retval; 2052} 2053 2054/*-------------------------------------------------------------------------*/ 2055 2056/* We only have this one interface to user space, through usbfs. 2057 * User mode code can scan usbfs to find N different devices (maybe on 2058 * different busses) to use when testing, and allocate one thread per 2059 * test. So discovery is simplified, and we have no device naming issues. 2060 * 2061 * Don't use these only as stress/load tests. Use them along with with 2062 * other USB bus activity: plugging, unplugging, mousing, mp3 playback, 2063 * video capture, and so on. Run different tests at different times, in 2064 * different sequences. Nothing here should interact with other devices, 2065 * except indirectly by consuming USB bandwidth and CPU resources for test 2066 * threads and request completion. But the only way to know that for sure 2067 * is to test when HC queues are in use by many devices. 2068 * 2069 * WARNING: Because usbfs grabs udev->dev.sem before calling this ioctl(), 2070 * it locks out usbcore in certain code paths. Notably, if you disconnect 2071 * the device-under-test, hub_wq will wait block forever waiting for the 2072 * ioctl to complete ... so that usb_disconnect() can abort the pending 2073 * urbs and then call usbtest_disconnect(). To abort a test, you're best 2074 * off just killing the userspace task and waiting for it to exit. 2075 */ 2076 2077static int 2078usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf) 2079{ 2080 struct usbtest_dev *dev = usb_get_intfdata(intf); 2081 struct usb_device *udev = testdev_to_usbdev(dev); 2082 struct usbtest_param *param = buf; 2083 int retval = -EOPNOTSUPP; 2084 struct urb *urb; 2085 struct scatterlist *sg; 2086 struct usb_sg_request req; 2087 struct timeval start; 2088 unsigned i; 2089 2090 /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */ 2091 2092 pattern = mod_pattern; 2093 2094 if (code != USBTEST_REQUEST) 2095 return -EOPNOTSUPP; 2096 2097 if (param->iterations <= 0) 2098 return -EINVAL; 2099 2100 if (param->sglen > MAX_SGLEN) 2101 return -EINVAL; 2102 2103 if (mutex_lock_interruptible(&dev->lock)) 2104 return -ERESTARTSYS; 2105 2106 /* FIXME: What if a system sleep starts while a test is running? */ 2107 2108 /* some devices, like ez-usb default devices, need a non-default 2109 * altsetting to have any active endpoints. some tests change 2110 * altsettings; force a default so most tests don't need to check. 2111 */ 2112 if (dev->info->alt >= 0) { 2113 int res; 2114 2115 if (intf->altsetting->desc.bInterfaceNumber) { 2116 mutex_unlock(&dev->lock); 2117 return -ENODEV; 2118 } 2119 res = set_altsetting(dev, dev->info->alt); 2120 if (res) { 2121 dev_err(&intf->dev, 2122 "set altsetting to %d failed, %d\n", 2123 dev->info->alt, res); 2124 mutex_unlock(&dev->lock); 2125 return res; 2126 } 2127 } 2128 2129 /* 2130 * Just a bunch of test cases that every HCD is expected to handle. 2131 * 2132 * Some may need specific firmware, though it'd be good to have 2133 * one firmware image to handle all the test cases. 2134 * 2135 * FIXME add more tests! cancel requests, verify the data, control 2136 * queueing, concurrent read+write threads, and so on. 2137 */ 2138 do_gettimeofday(&start); 2139 switch (param->test_num) { 2140 2141 case 0: 2142 dev_info(&intf->dev, "TEST 0: NOP\n"); 2143 retval = 0; 2144 break; 2145 2146 /* Simple non-queued bulk I/O tests */ 2147 case 1: 2148 if (dev->out_pipe == 0) 2149 break; 2150 dev_info(&intf->dev, 2151 "TEST 1: write %d bytes %u times\n", 2152 param->length, param->iterations); 2153 urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0); 2154 if (!urb) { 2155 retval = -ENOMEM; 2156 break; 2157 } 2158 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 2159 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1"); 2160 simple_free_urb(urb); 2161 break; 2162 case 2: 2163 if (dev->in_pipe == 0) 2164 break; 2165 dev_info(&intf->dev, 2166 "TEST 2: read %d bytes %u times\n", 2167 param->length, param->iterations); 2168 urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0); 2169 if (!urb) { 2170 retval = -ENOMEM; 2171 break; 2172 } 2173 /* FIRMWARE: bulk source (maybe generates short writes) */ 2174 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2"); 2175 simple_free_urb(urb); 2176 break; 2177 case 3: 2178 if (dev->out_pipe == 0 || param->vary == 0) 2179 break; 2180 dev_info(&intf->dev, 2181 "TEST 3: write/%d 0..%d bytes %u times\n", 2182 param->vary, param->length, param->iterations); 2183 urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0); 2184 if (!urb) { 2185 retval = -ENOMEM; 2186 break; 2187 } 2188 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 2189 retval = simple_io(dev, urb, param->iterations, param->vary, 2190 0, "test3"); 2191 simple_free_urb(urb); 2192 break; 2193 case 4: 2194 if (dev->in_pipe == 0 || param->vary == 0) 2195 break; 2196 dev_info(&intf->dev, 2197 "TEST 4: read/%d 0..%d bytes %u times\n", 2198 param->vary, param->length, param->iterations); 2199 urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0); 2200 if (!urb) { 2201 retval = -ENOMEM; 2202 break; 2203 } 2204 /* FIRMWARE: bulk source (maybe generates short writes) */ 2205 retval = simple_io(dev, urb, param->iterations, param->vary, 2206 0, "test4"); 2207 simple_free_urb(urb); 2208 break; 2209 2210 /* Queued bulk I/O tests */ 2211 case 5: 2212 if (dev->out_pipe == 0 || param->sglen == 0) 2213 break; 2214 dev_info(&intf->dev, 2215 "TEST 5: write %d sglists %d entries of %d bytes\n", 2216 param->iterations, 2217 param->sglen, param->length); 2218 sg = alloc_sglist(param->sglen, param->length, 2219 0, dev, dev->out_pipe); 2220 if (!sg) { 2221 retval = -ENOMEM; 2222 break; 2223 } 2224 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 2225 retval = perform_sglist(dev, param->iterations, dev->out_pipe, 2226 &req, sg, param->sglen); 2227 free_sglist(sg, param->sglen); 2228 break; 2229 2230 case 6: 2231 if (dev->in_pipe == 0 || param->sglen == 0) 2232 break; 2233 dev_info(&intf->dev, 2234 "TEST 6: read %d sglists %d entries of %d bytes\n", 2235 param->iterations, 2236 param->sglen, param->length); 2237 sg = alloc_sglist(param->sglen, param->length, 2238 0, dev, dev->in_pipe); 2239 if (!sg) { 2240 retval = -ENOMEM; 2241 break; 2242 } 2243 /* FIRMWARE: bulk source (maybe generates short writes) */ 2244 retval = perform_sglist(dev, param->iterations, dev->in_pipe, 2245 &req, sg, param->sglen); 2246 free_sglist(sg, param->sglen); 2247 break; 2248 case 7: 2249 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0) 2250 break; 2251 dev_info(&intf->dev, 2252 "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n", 2253 param->vary, param->iterations, 2254 param->sglen, param->length); 2255 sg = alloc_sglist(param->sglen, param->length, 2256 param->vary, dev, dev->out_pipe); 2257 if (!sg) { 2258 retval = -ENOMEM; 2259 break; 2260 } 2261 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 2262 retval = perform_sglist(dev, param->iterations, dev->out_pipe, 2263 &req, sg, param->sglen); 2264 free_sglist(sg, param->sglen); 2265 break; 2266 case 8: 2267 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0) 2268 break; 2269 dev_info(&intf->dev, 2270 "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n", 2271 param->vary, param->iterations, 2272 param->sglen, param->length); 2273 sg = alloc_sglist(param->sglen, param->length, 2274 param->vary, dev, dev->in_pipe); 2275 if (!sg) { 2276 retval = -ENOMEM; 2277 break; 2278 } 2279 /* FIRMWARE: bulk source (maybe generates short writes) */ 2280 retval = perform_sglist(dev, param->iterations, dev->in_pipe, 2281 &req, sg, param->sglen); 2282 free_sglist(sg, param->sglen); 2283 break; 2284 2285 /* non-queued sanity tests for control (chapter 9 subset) */ 2286 case 9: 2287 retval = 0; 2288 dev_info(&intf->dev, 2289 "TEST 9: ch9 (subset) control tests, %d times\n", 2290 param->iterations); 2291 for (i = param->iterations; retval == 0 && i--; /* NOP */) 2292 retval = ch9_postconfig(dev); 2293 if (retval) 2294 dev_err(&intf->dev, "ch9 subset failed, " 2295 "iterations left %d\n", i); 2296 break; 2297 2298 /* queued control messaging */ 2299 case 10: 2300 retval = 0; 2301 dev_info(&intf->dev, 2302 "TEST 10: queue %d control calls, %d times\n", 2303 param->sglen, 2304 param->iterations); 2305 retval = test_ctrl_queue(dev, param); 2306 break; 2307 2308 /* simple non-queued unlinks (ring with one urb) */ 2309 case 11: 2310 if (dev->in_pipe == 0 || !param->length) 2311 break; 2312 retval = 0; 2313 dev_info(&intf->dev, "TEST 11: unlink %d reads of %d\n", 2314 param->iterations, param->length); 2315 for (i = param->iterations; retval == 0 && i--; /* NOP */) 2316 retval = unlink_simple(dev, dev->in_pipe, 2317 param->length); 2318 if (retval) 2319 dev_err(&intf->dev, "unlink reads failed %d, " 2320 "iterations left %d\n", retval, i); 2321 break; 2322 case 12: 2323 if (dev->out_pipe == 0 || !param->length) 2324 break; 2325 retval = 0; 2326 dev_info(&intf->dev, "TEST 12: unlink %d writes of %d\n", 2327 param->iterations, param->length); 2328 for (i = param->iterations; retval == 0 && i--; /* NOP */) 2329 retval = unlink_simple(dev, dev->out_pipe, 2330 param->length); 2331 if (retval) 2332 dev_err(&intf->dev, "unlink writes failed %d, " 2333 "iterations left %d\n", retval, i); 2334 break; 2335 2336 /* ep halt tests */ 2337 case 13: 2338 if (dev->out_pipe == 0 && dev->in_pipe == 0) 2339 break; 2340 retval = 0; 2341 dev_info(&intf->dev, "TEST 13: set/clear %d halts\n", 2342 param->iterations); 2343 for (i = param->iterations; retval == 0 && i--; /* NOP */) 2344 retval = halt_simple(dev); 2345 2346 if (retval) 2347 ERROR(dev, "halts failed, iterations left %d\n", i); 2348 break; 2349 2350 /* control write tests */ 2351 case 14: 2352 if (!dev->info->ctrl_out) 2353 break; 2354 dev_info(&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n", 2355 param->iterations, 2356 realworld ? 1 : 0, param->length, 2357 param->vary); 2358 retval = ctrl_out(dev, param->iterations, 2359 param->length, param->vary, 0); 2360 break; 2361 2362 /* iso write tests */ 2363 case 15: 2364 if (dev->out_iso_pipe == 0 || param->sglen == 0) 2365 break; 2366 dev_info(&intf->dev, 2367 "TEST 15: write %d iso, %d entries of %d bytes\n", 2368 param->iterations, 2369 param->sglen, param->length); 2370 /* FIRMWARE: iso sink */ 2371 retval = test_queue(dev, param, 2372 dev->out_iso_pipe, dev->iso_out, 0); 2373 break; 2374 2375 /* iso read tests */ 2376 case 16: 2377 if (dev->in_iso_pipe == 0 || param->sglen == 0) 2378 break; 2379 dev_info(&intf->dev, 2380 "TEST 16: read %d iso, %d entries of %d bytes\n", 2381 param->iterations, 2382 param->sglen, param->length); 2383 /* FIRMWARE: iso source */ 2384 retval = test_queue(dev, param, 2385 dev->in_iso_pipe, dev->iso_in, 0); 2386 break; 2387 2388 /* FIXME scatterlist cancel (needs helper thread) */ 2389 2390 /* Tests for bulk I/O using DMA mapping by core and odd address */ 2391 case 17: 2392 if (dev->out_pipe == 0) 2393 break; 2394 dev_info(&intf->dev, 2395 "TEST 17: write odd addr %d bytes %u times core map\n", 2396 param->length, param->iterations); 2397 2398 retval = test_unaligned_bulk( 2399 dev, dev->out_pipe, 2400 param->length, param->iterations, 2401 0, "test17"); 2402 break; 2403 2404 case 18: 2405 if (dev->in_pipe == 0) 2406 break; 2407 dev_info(&intf->dev, 2408 "TEST 18: read odd addr %d bytes %u times core map\n", 2409 param->length, param->iterations); 2410 2411 retval = test_unaligned_bulk( 2412 dev, dev->in_pipe, 2413 param->length, param->iterations, 2414 0, "test18"); 2415 break; 2416 2417 /* Tests for bulk I/O using premapped coherent buffer and odd address */ 2418 case 19: 2419 if (dev->out_pipe == 0) 2420 break; 2421 dev_info(&intf->dev, 2422 "TEST 19: write odd addr %d bytes %u times premapped\n", 2423 param->length, param->iterations); 2424 2425 retval = test_unaligned_bulk( 2426 dev, dev->out_pipe, 2427 param->length, param->iterations, 2428 URB_NO_TRANSFER_DMA_MAP, "test19"); 2429 break; 2430 2431 case 20: 2432 if (dev->in_pipe == 0) 2433 break; 2434 dev_info(&intf->dev, 2435 "TEST 20: read odd addr %d bytes %u times premapped\n", 2436 param->length, param->iterations); 2437 2438 retval = test_unaligned_bulk( 2439 dev, dev->in_pipe, 2440 param->length, param->iterations, 2441 URB_NO_TRANSFER_DMA_MAP, "test20"); 2442 break; 2443 2444 /* control write tests with unaligned buffer */ 2445 case 21: 2446 if (!dev->info->ctrl_out) 2447 break; 2448 dev_info(&intf->dev, 2449 "TEST 21: %d ep0out odd addr, %d..%d vary %d\n", 2450 param->iterations, 2451 realworld ? 1 : 0, param->length, 2452 param->vary); 2453 retval = ctrl_out(dev, param->iterations, 2454 param->length, param->vary, 1); 2455 break; 2456 2457 /* unaligned iso tests */ 2458 case 22: 2459 if (dev->out_iso_pipe == 0 || param->sglen == 0) 2460 break; 2461 dev_info(&intf->dev, 2462 "TEST 22: write %d iso odd, %d entries of %d bytes\n", 2463 param->iterations, 2464 param->sglen, param->length); 2465 retval = test_queue(dev, param, 2466 dev->out_iso_pipe, dev->iso_out, 1); 2467 break; 2468 2469 case 23: 2470 if (dev->in_iso_pipe == 0 || param->sglen == 0) 2471 break; 2472 dev_info(&intf->dev, 2473 "TEST 23: read %d iso odd, %d entries of %d bytes\n", 2474 param->iterations, 2475 param->sglen, param->length); 2476 retval = test_queue(dev, param, 2477 dev->in_iso_pipe, dev->iso_in, 1); 2478 break; 2479 2480 /* unlink URBs from a bulk-OUT queue */ 2481 case 24: 2482 if (dev->out_pipe == 0 || !param->length || param->sglen < 4) 2483 break; 2484 retval = 0; 2485 dev_info(&intf->dev, "TEST 24: unlink from %d queues of " 2486 "%d %d-byte writes\n", 2487 param->iterations, param->sglen, param->length); 2488 for (i = param->iterations; retval == 0 && i > 0; --i) { 2489 retval = unlink_queued(dev, dev->out_pipe, 2490 param->sglen, param->length); 2491 if (retval) { 2492 dev_err(&intf->dev, 2493 "unlink queued writes failed %d, " 2494 "iterations left %d\n", retval, i); 2495 break; 2496 } 2497 } 2498 break; 2499 2500 /* Simple non-queued interrupt I/O tests */ 2501 case 25: 2502 if (dev->out_int_pipe == 0) 2503 break; 2504 dev_info(&intf->dev, 2505 "TEST 25: write %d bytes %u times\n", 2506 param->length, param->iterations); 2507 urb = simple_alloc_urb(udev, dev->out_int_pipe, param->length, 2508 dev->int_out->bInterval); 2509 if (!urb) { 2510 retval = -ENOMEM; 2511 break; 2512 } 2513 /* FIRMWARE: interrupt sink (maybe accepts short writes) */ 2514 retval = simple_io(dev, urb, param->iterations, 0, 0, "test25"); 2515 simple_free_urb(urb); 2516 break; 2517 case 26: 2518 if (dev->in_int_pipe == 0) 2519 break; 2520 dev_info(&intf->dev, 2521 "TEST 26: read %d bytes %u times\n", 2522 param->length, param->iterations); 2523 urb = simple_alloc_urb(udev, dev->in_int_pipe, param->length, 2524 dev->int_in->bInterval); 2525 if (!urb) { 2526 retval = -ENOMEM; 2527 break; 2528 } 2529 /* FIRMWARE: interrupt source (maybe generates short writes) */ 2530 retval = simple_io(dev, urb, param->iterations, 0, 0, "test26"); 2531 simple_free_urb(urb); 2532 break; 2533 case 27: 2534 /* We do performance test, so ignore data compare */ 2535 if (dev->out_pipe == 0 || param->sglen == 0 || pattern != 0) 2536 break; 2537 dev_info(&intf->dev, 2538 "TEST 27: bulk write %dMbytes\n", (param->iterations * 2539 param->sglen * param->length) / (1024 * 1024)); 2540 retval = test_queue(dev, param, 2541 dev->out_pipe, NULL, 0); 2542 break; 2543 case 28: 2544 if (dev->in_pipe == 0 || param->sglen == 0 || pattern != 0) 2545 break; 2546 dev_info(&intf->dev, 2547 "TEST 28: bulk read %dMbytes\n", (param->iterations * 2548 param->sglen * param->length) / (1024 * 1024)); 2549 retval = test_queue(dev, param, 2550 dev->in_pipe, NULL, 0); 2551 break; 2552 } 2553 do_gettimeofday(¶m->duration); 2554 param->duration.tv_sec -= start.tv_sec; 2555 param->duration.tv_usec -= start.tv_usec; 2556 if (param->duration.tv_usec < 0) { 2557 param->duration.tv_usec += 1000 * 1000; 2558 param->duration.tv_sec -= 1; 2559 } 2560 mutex_unlock(&dev->lock); 2561 return retval; 2562} 2563 2564/*-------------------------------------------------------------------------*/ 2565 2566static unsigned force_interrupt; 2567module_param(force_interrupt, uint, 0); 2568MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt"); 2569 2570#ifdef GENERIC 2571static unsigned short vendor; 2572module_param(vendor, ushort, 0); 2573MODULE_PARM_DESC(vendor, "vendor code (from usb-if)"); 2574 2575static unsigned short product; 2576module_param(product, ushort, 0); 2577MODULE_PARM_DESC(product, "product code (from vendor)"); 2578#endif 2579 2580static int 2581usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id) 2582{ 2583 struct usb_device *udev; 2584 struct usbtest_dev *dev; 2585 struct usbtest_info *info; 2586 char *rtest, *wtest; 2587 char *irtest, *iwtest; 2588 char *intrtest, *intwtest; 2589 2590 udev = interface_to_usbdev(intf); 2591 2592#ifdef GENERIC 2593 /* specify devices by module parameters? */ 2594 if (id->match_flags == 0) { 2595 /* vendor match required, product match optional */ 2596 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor) 2597 return -ENODEV; 2598 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product) 2599 return -ENODEV; 2600 dev_info(&intf->dev, "matched module params, " 2601 "vend=0x%04x prod=0x%04x\n", 2602 le16_to_cpu(udev->descriptor.idVendor), 2603 le16_to_cpu(udev->descriptor.idProduct)); 2604 } 2605#endif 2606 2607 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2608 if (!dev) 2609 return -ENOMEM; 2610 info = (struct usbtest_info *) id->driver_info; 2611 dev->info = info; 2612 mutex_init(&dev->lock); 2613 2614 dev->intf = intf; 2615 2616 /* cacheline-aligned scratch for i/o */ 2617 dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL); 2618 if (dev->buf == NULL) { 2619 kfree(dev); 2620 return -ENOMEM; 2621 } 2622 2623 /* NOTE this doesn't yet test the handful of difference that are 2624 * visible with high speed interrupts: bigger maxpacket (1K) and 2625 * "high bandwidth" modes (up to 3 packets/uframe). 2626 */ 2627 rtest = wtest = ""; 2628 irtest = iwtest = ""; 2629 intrtest = intwtest = ""; 2630 if (force_interrupt || udev->speed == USB_SPEED_LOW) { 2631 if (info->ep_in) { 2632 dev->in_pipe = usb_rcvintpipe(udev, info->ep_in); 2633 rtest = " intr-in"; 2634 } 2635 if (info->ep_out) { 2636 dev->out_pipe = usb_sndintpipe(udev, info->ep_out); 2637 wtest = " intr-out"; 2638 } 2639 } else { 2640 if (override_alt >= 0 || info->autoconf) { 2641 int status; 2642 2643 status = get_endpoints(dev, intf); 2644 if (status < 0) { 2645 WARNING(dev, "couldn't get endpoints, %d\n", 2646 status); 2647 kfree(dev->buf); 2648 kfree(dev); 2649 return status; 2650 } 2651 /* may find bulk or ISO pipes */ 2652 } else { 2653 if (info->ep_in) 2654 dev->in_pipe = usb_rcvbulkpipe(udev, 2655 info->ep_in); 2656 if (info->ep_out) 2657 dev->out_pipe = usb_sndbulkpipe(udev, 2658 info->ep_out); 2659 } 2660 if (dev->in_pipe) 2661 rtest = " bulk-in"; 2662 if (dev->out_pipe) 2663 wtest = " bulk-out"; 2664 if (dev->in_iso_pipe) 2665 irtest = " iso-in"; 2666 if (dev->out_iso_pipe) 2667 iwtest = " iso-out"; 2668 if (dev->in_int_pipe) 2669 intrtest = " int-in"; 2670 if (dev->out_int_pipe) 2671 intwtest = " int-out"; 2672 } 2673 2674 usb_set_intfdata(intf, dev); 2675 dev_info(&intf->dev, "%s\n", info->name); 2676 dev_info(&intf->dev, "%s {control%s%s%s%s%s%s%s} tests%s\n", 2677 usb_speed_string(udev->speed), 2678 info->ctrl_out ? " in/out" : "", 2679 rtest, wtest, 2680 irtest, iwtest, 2681 intrtest, intwtest, 2682 info->alt >= 0 ? " (+alt)" : ""); 2683 return 0; 2684} 2685 2686static int usbtest_suspend(struct usb_interface *intf, pm_message_t message) 2687{ 2688 return 0; 2689} 2690 2691static int usbtest_resume(struct usb_interface *intf) 2692{ 2693 return 0; 2694} 2695 2696 2697static void usbtest_disconnect(struct usb_interface *intf) 2698{ 2699 struct usbtest_dev *dev = usb_get_intfdata(intf); 2700 2701 usb_set_intfdata(intf, NULL); 2702 dev_dbg(&intf->dev, "disconnect\n"); 2703 kfree(dev); 2704} 2705 2706/* Basic testing only needs a device that can source or sink bulk traffic. 2707 * Any device can test control transfers (default with GENERIC binding). 2708 * 2709 * Several entries work with the default EP0 implementation that's built 2710 * into EZ-USB chips. There's a default vendor ID which can be overridden 2711 * by (very) small config EEPROMS, but otherwise all these devices act 2712 * identically until firmware is loaded: only EP0 works. It turns out 2713 * to be easy to make other endpoints work, without modifying that EP0 2714 * behavior. For now, we expect that kind of firmware. 2715 */ 2716 2717/* an21xx or fx versions of ez-usb */ 2718static struct usbtest_info ez1_info = { 2719 .name = "EZ-USB device", 2720 .ep_in = 2, 2721 .ep_out = 2, 2722 .alt = 1, 2723}; 2724 2725/* fx2 version of ez-usb */ 2726static struct usbtest_info ez2_info = { 2727 .name = "FX2 device", 2728 .ep_in = 6, 2729 .ep_out = 2, 2730 .alt = 1, 2731}; 2732 2733/* ezusb family device with dedicated usb test firmware, 2734 */ 2735static struct usbtest_info fw_info = { 2736 .name = "usb test device", 2737 .ep_in = 2, 2738 .ep_out = 2, 2739 .alt = 1, 2740 .autoconf = 1, /* iso and ctrl_out need autoconf */ 2741 .ctrl_out = 1, 2742 .iso = 1, /* iso_ep's are #8 in/out */ 2743}; 2744 2745/* peripheral running Linux and 'zero.c' test firmware, or 2746 * its user-mode cousin. different versions of this use 2747 * different hardware with the same vendor/product codes. 2748 * host side MUST rely on the endpoint descriptors. 2749 */ 2750static struct usbtest_info gz_info = { 2751 .name = "Linux gadget zero", 2752 .autoconf = 1, 2753 .ctrl_out = 1, 2754 .iso = 1, 2755 .intr = 1, 2756 .alt = 0, 2757}; 2758 2759static struct usbtest_info um_info = { 2760 .name = "Linux user mode test driver", 2761 .autoconf = 1, 2762 .alt = -1, 2763}; 2764 2765static struct usbtest_info um2_info = { 2766 .name = "Linux user mode ISO test driver", 2767 .autoconf = 1, 2768 .iso = 1, 2769 .alt = -1, 2770}; 2771 2772#ifdef IBOT2 2773/* this is a nice source of high speed bulk data; 2774 * uses an FX2, with firmware provided in the device 2775 */ 2776static struct usbtest_info ibot2_info = { 2777 .name = "iBOT2 webcam", 2778 .ep_in = 2, 2779 .alt = -1, 2780}; 2781#endif 2782 2783#ifdef GENERIC 2784/* we can use any device to test control traffic */ 2785static struct usbtest_info generic_info = { 2786 .name = "Generic USB device", 2787 .alt = -1, 2788}; 2789#endif 2790 2791 2792static const struct usb_device_id id_table[] = { 2793 2794 /*-------------------------------------------------------------*/ 2795 2796 /* EZ-USB devices which download firmware to replace (or in our 2797 * case augment) the default device implementation. 2798 */ 2799 2800 /* generic EZ-USB FX controller */ 2801 { USB_DEVICE(0x0547, 0x2235), 2802 .driver_info = (unsigned long) &ez1_info, 2803 }, 2804 2805 /* CY3671 development board with EZ-USB FX */ 2806 { USB_DEVICE(0x0547, 0x0080), 2807 .driver_info = (unsigned long) &ez1_info, 2808 }, 2809 2810 /* generic EZ-USB FX2 controller (or development board) */ 2811 { USB_DEVICE(0x04b4, 0x8613), 2812 .driver_info = (unsigned long) &ez2_info, 2813 }, 2814 2815 /* re-enumerated usb test device firmware */ 2816 { USB_DEVICE(0xfff0, 0xfff0), 2817 .driver_info = (unsigned long) &fw_info, 2818 }, 2819 2820 /* "Gadget Zero" firmware runs under Linux */ 2821 { USB_DEVICE(0x0525, 0xa4a0), 2822 .driver_info = (unsigned long) &gz_info, 2823 }, 2824 2825 /* so does a user-mode variant */ 2826 { USB_DEVICE(0x0525, 0xa4a4), 2827 .driver_info = (unsigned long) &um_info, 2828 }, 2829 2830 /* ... and a user-mode variant that talks iso */ 2831 { USB_DEVICE(0x0525, 0xa4a3), 2832 .driver_info = (unsigned long) &um2_info, 2833 }, 2834 2835#ifdef KEYSPAN_19Qi 2836 /* Keyspan 19qi uses an21xx (original EZ-USB) */ 2837 /* this does not coexist with the real Keyspan 19qi driver! */ 2838 { USB_DEVICE(0x06cd, 0x010b), 2839 .driver_info = (unsigned long) &ez1_info, 2840 }, 2841#endif 2842 2843 /*-------------------------------------------------------------*/ 2844 2845#ifdef IBOT2 2846 /* iBOT2 makes a nice source of high speed bulk-in data */ 2847 /* this does not coexist with a real iBOT2 driver! */ 2848 { USB_DEVICE(0x0b62, 0x0059), 2849 .driver_info = (unsigned long) &ibot2_info, 2850 }, 2851#endif 2852 2853 /*-------------------------------------------------------------*/ 2854 2855#ifdef GENERIC 2856 /* module params can specify devices to use for control tests */ 2857 { .driver_info = (unsigned long) &generic_info, }, 2858#endif 2859 2860 /*-------------------------------------------------------------*/ 2861 2862 { } 2863}; 2864MODULE_DEVICE_TABLE(usb, id_table); 2865 2866static struct usb_driver usbtest_driver = { 2867 .name = "usbtest", 2868 .id_table = id_table, 2869 .probe = usbtest_probe, 2870 .unlocked_ioctl = usbtest_ioctl, 2871 .disconnect = usbtest_disconnect, 2872 .suspend = usbtest_suspend, 2873 .resume = usbtest_resume, 2874}; 2875 2876/*-------------------------------------------------------------------------*/ 2877 2878static int __init usbtest_init(void) 2879{ 2880#ifdef GENERIC 2881 if (vendor) 2882 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product); 2883#endif 2884 return usb_register(&usbtest_driver); 2885} 2886module_init(usbtest_init); 2887 2888static void __exit usbtest_exit(void) 2889{ 2890 usb_deregister(&usbtest_driver); 2891} 2892module_exit(usbtest_exit); 2893 2894MODULE_DESCRIPTION("USB Core/HCD Testing Driver"); 2895MODULE_LICENSE("GPL"); 2896 2897