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 17 static int override_alt = -1; 18 module_param_named(alt, override_alt, int, 0644); 19 MODULE_PARM_DESC(alt, ">= 0 to override altsetting selection"); 20 static void complicated_callback(struct urb *urb); 21 22 /*-------------------------------------------------------------------------*/ 23 24 /* FIXME make these public somewhere; usbdevfs.h? */ 25 26 /* Parameter for usbtest driver. */ 27 struct usbtest_param_32 { 28 /* inputs */ 29 __u32 test_num; /* 0..(TEST_CASES-1) */ 30 __u32 iterations; 31 __u32 length; 32 __u32 vary; 33 __u32 sglen; 34 35 /* outputs */ 36 __s32 duration_sec; 37 __s32 duration_usec; 38 }; 39 40 /* 41 * Compat parameter to the usbtest driver. 42 * This supports older user space binaries compiled with 64 bit compiler. 43 */ 44 struct usbtest_param_64 { 45 /* inputs */ 46 __u32 test_num; /* 0..(TEST_CASES-1) */ 47 __u32 iterations; 48 __u32 length; 49 __u32 vary; 50 __u32 sglen; 51 52 /* outputs */ 53 __s64 duration_sec; 54 __s64 duration_usec; 55 }; 56 57 /* IOCTL interface to the driver. */ 58 #define USBTEST_REQUEST_32 _IOWR('U', 100, struct usbtest_param_32) 59 /* COMPAT IOCTL interface to the driver. */ 60 #define USBTEST_REQUEST_64 _IOWR('U', 100, struct usbtest_param_64) 61 62 /*-------------------------------------------------------------------------*/ 63 64 #define GENERIC /* let probe() bind using module params */ 65 66 /* Some devices that can be used for testing will have "real" drivers. 67 * Entries for those need to be enabled here by hand, after disabling 68 * that "real" driver. 69 */ 70 //#define IBOT2 /* grab iBOT2 webcams */ 71 //#define KEYSPAN_19Qi /* grab un-renumerated serial adapter */ 72 73 /*-------------------------------------------------------------------------*/ 74 75 struct usbtest_info { 76 const char *name; 77 u8 ep_in; /* bulk/intr source */ 78 u8 ep_out; /* bulk/intr sink */ 79 unsigned autoconf:1; 80 unsigned ctrl_out:1; 81 unsigned iso:1; /* try iso in/out */ 82 unsigned intr:1; /* try interrupt in/out */ 83 int alt; 84 }; 85 86 /* this is accessed only through usbfs ioctl calls. 87 * one ioctl to issue a test ... one lock per device. 88 * tests create other threads if they need them. 89 * urbs and buffers are allocated dynamically, 90 * and data generated deterministically. 91 */ 92 struct usbtest_dev { 93 struct usb_interface *intf; 94 struct usbtest_info *info; 95 int in_pipe; 96 int out_pipe; 97 int in_iso_pipe; 98 int out_iso_pipe; 99 int in_int_pipe; 100 int out_int_pipe; 101 struct usb_endpoint_descriptor *iso_in, *iso_out; 102 struct usb_endpoint_descriptor *int_in, *int_out; 103 struct mutex lock; 104 105 #define TBUF_SIZE 256 106 u8 *buf; 107 }; 108 109 static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test) 110 { 111 return interface_to_usbdev(test->intf); 112 } 113 114 /* set up all urbs so they can be used with either bulk or interrupt */ 115 #define INTERRUPT_RATE 1 /* msec/transfer */ 116 117 #define ERROR(tdev, fmt, args...) \ 118 dev_err(&(tdev)->intf->dev , fmt , ## args) 119 #define WARNING(tdev, fmt, args...) \ 120 dev_warn(&(tdev)->intf->dev , fmt , ## args) 121 122 #define GUARD_BYTE 0xA5 123 #define MAX_SGLEN 128 124 125 /*-------------------------------------------------------------------------*/ 126 127 static int 128 get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf) 129 { 130 int tmp; 131 struct usb_host_interface *alt; 132 struct usb_host_endpoint *in, *out; 133 struct usb_host_endpoint *iso_in, *iso_out; 134 struct usb_host_endpoint *int_in, *int_out; 135 struct usb_device *udev; 136 137 for (tmp = 0; tmp < intf->num_altsetting; tmp++) { 138 unsigned ep; 139 140 in = out = NULL; 141 iso_in = iso_out = NULL; 142 int_in = int_out = NULL; 143 alt = intf->altsetting + tmp; 144 145 if (override_alt >= 0 && 146 override_alt != alt->desc.bAlternateSetting) 147 continue; 148 149 /* take the first altsetting with in-bulk + out-bulk; 150 * ignore other endpoints and altsettings. 151 */ 152 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { 153 struct usb_host_endpoint *e; 154 155 e = alt->endpoint + ep; 156 switch (usb_endpoint_type(&e->desc)) { 157 case USB_ENDPOINT_XFER_BULK: 158 break; 159 case USB_ENDPOINT_XFER_INT: 160 if (dev->info->intr) 161 goto try_intr; 162 case USB_ENDPOINT_XFER_ISOC: 163 if (dev->info->iso) 164 goto try_iso; 165 /* FALLTHROUGH */ 166 default: 167 continue; 168 } 169 if (usb_endpoint_dir_in(&e->desc)) { 170 if (!in) 171 in = e; 172 } else { 173 if (!out) 174 out = e; 175 } 176 continue; 177 try_intr: 178 if (usb_endpoint_dir_in(&e->desc)) { 179 if (!int_in) 180 int_in = e; 181 } else { 182 if (!int_out) 183 int_out = e; 184 } 185 continue; 186 try_iso: 187 if (usb_endpoint_dir_in(&e->desc)) { 188 if (!iso_in) 189 iso_in = e; 190 } else { 191 if (!iso_out) 192 iso_out = e; 193 } 194 } 195 if ((in && out) || iso_in || iso_out || int_in || int_out) 196 goto found; 197 } 198 return -EINVAL; 199 200 found: 201 udev = testdev_to_usbdev(dev); 202 dev->info->alt = alt->desc.bAlternateSetting; 203 if (alt->desc.bAlternateSetting != 0) { 204 tmp = usb_set_interface(udev, 205 alt->desc.bInterfaceNumber, 206 alt->desc.bAlternateSetting); 207 if (tmp < 0) 208 return tmp; 209 } 210 211 if (in) { 212 dev->in_pipe = usb_rcvbulkpipe(udev, 213 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 214 dev->out_pipe = usb_sndbulkpipe(udev, 215 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); 216 } 217 if (iso_in) { 218 dev->iso_in = &iso_in->desc; 219 dev->in_iso_pipe = usb_rcvisocpipe(udev, 220 iso_in->desc.bEndpointAddress 221 & USB_ENDPOINT_NUMBER_MASK); 222 } 223 224 if (iso_out) { 225 dev->iso_out = &iso_out->desc; 226 dev->out_iso_pipe = usb_sndisocpipe(udev, 227 iso_out->desc.bEndpointAddress 228 & USB_ENDPOINT_NUMBER_MASK); 229 } 230 231 if (int_in) { 232 dev->int_in = &int_in->desc; 233 dev->in_int_pipe = usb_rcvintpipe(udev, 234 int_in->desc.bEndpointAddress 235 & USB_ENDPOINT_NUMBER_MASK); 236 } 237 238 if (int_out) { 239 dev->int_out = &int_out->desc; 240 dev->out_int_pipe = usb_sndintpipe(udev, 241 int_out->desc.bEndpointAddress 242 & USB_ENDPOINT_NUMBER_MASK); 243 } 244 return 0; 245 } 246 247 /*-------------------------------------------------------------------------*/ 248 249 /* Support for testing basic non-queued I/O streams. 250 * 251 * These just package urbs as requests that can be easily canceled. 252 * Each urb's data buffer is dynamically allocated; callers can fill 253 * them with non-zero test data (or test for it) when appropriate. 254 */ 255 256 static void simple_callback(struct urb *urb) 257 { 258 complete(urb->context); 259 } 260 261 static struct urb *usbtest_alloc_urb( 262 struct usb_device *udev, 263 int pipe, 264 unsigned long bytes, 265 unsigned transfer_flags, 266 unsigned offset, 267 u8 bInterval, 268 usb_complete_t complete_fn) 269 { 270 struct urb *urb; 271 272 urb = usb_alloc_urb(0, GFP_KERNEL); 273 if (!urb) 274 return urb; 275 276 if (bInterval) 277 usb_fill_int_urb(urb, udev, pipe, NULL, bytes, complete_fn, 278 NULL, bInterval); 279 else 280 usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, complete_fn, 281 NULL); 282 283 urb->interval = (udev->speed == USB_SPEED_HIGH) 284 ? (INTERRUPT_RATE << 3) 285 : INTERRUPT_RATE; 286 urb->transfer_flags = transfer_flags; 287 if (usb_pipein(pipe)) 288 urb->transfer_flags |= URB_SHORT_NOT_OK; 289 290 if ((bytes + offset) == 0) 291 return urb; 292 293 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 294 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset, 295 GFP_KERNEL, &urb->transfer_dma); 296 else 297 urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL); 298 299 if (!urb->transfer_buffer) { 300 usb_free_urb(urb); 301 return NULL; 302 } 303 304 /* To test unaligned transfers add an offset and fill the 305 unused memory with a guard value */ 306 if (offset) { 307 memset(urb->transfer_buffer, GUARD_BYTE, offset); 308 urb->transfer_buffer += offset; 309 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 310 urb->transfer_dma += offset; 311 } 312 313 /* For inbound transfers use guard byte so that test fails if 314 data not correctly copied */ 315 memset(urb->transfer_buffer, 316 usb_pipein(urb->pipe) ? GUARD_BYTE : 0, 317 bytes); 318 return urb; 319 } 320 321 static struct urb *simple_alloc_urb( 322 struct usb_device *udev, 323 int pipe, 324 unsigned long bytes, 325 u8 bInterval) 326 { 327 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0, 328 bInterval, simple_callback); 329 } 330 331 static struct urb *complicated_alloc_urb( 332 struct usb_device *udev, 333 int pipe, 334 unsigned long bytes, 335 u8 bInterval) 336 { 337 return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0, 338 bInterval, complicated_callback); 339 } 340 341 static unsigned pattern; 342 static unsigned mod_pattern; 343 module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR); 344 MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)"); 345 346 static unsigned get_maxpacket(struct usb_device *udev, int pipe) 347 { 348 struct usb_host_endpoint *ep; 349 350 ep = usb_pipe_endpoint(udev, pipe); 351 return le16_to_cpup(&ep->desc.wMaxPacketSize); 352 } 353 354 static void simple_fill_buf(struct urb *urb) 355 { 356 unsigned i; 357 u8 *buf = urb->transfer_buffer; 358 unsigned len = urb->transfer_buffer_length; 359 unsigned maxpacket; 360 361 switch (pattern) { 362 default: 363 /* FALLTHROUGH */ 364 case 0: 365 memset(buf, 0, len); 366 break; 367 case 1: /* mod63 */ 368 maxpacket = get_maxpacket(urb->dev, urb->pipe); 369 for (i = 0; i < len; i++) 370 *buf++ = (u8) ((i % maxpacket) % 63); 371 break; 372 } 373 } 374 375 static inline unsigned long buffer_offset(void *buf) 376 { 377 return (unsigned long)buf & (ARCH_KMALLOC_MINALIGN - 1); 378 } 379 380 static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb) 381 { 382 u8 *buf = urb->transfer_buffer; 383 u8 *guard = buf - buffer_offset(buf); 384 unsigned i; 385 386 for (i = 0; guard < buf; i++, guard++) { 387 if (*guard != GUARD_BYTE) { 388 ERROR(tdev, "guard byte[%d] %d (not %d)\n", 389 i, *guard, GUARD_BYTE); 390 return -EINVAL; 391 } 392 } 393 return 0; 394 } 395 396 static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb) 397 { 398 unsigned i; 399 u8 expected; 400 u8 *buf = urb->transfer_buffer; 401 unsigned len = urb->actual_length; 402 unsigned maxpacket = get_maxpacket(urb->dev, urb->pipe); 403 404 int ret = check_guard_bytes(tdev, urb); 405 if (ret) 406 return ret; 407 408 for (i = 0; i < len; i++, buf++) { 409 switch (pattern) { 410 /* all-zeroes has no synchronization issues */ 411 case 0: 412 expected = 0; 413 break; 414 /* mod63 stays in sync with short-terminated transfers, 415 * or otherwise when host and gadget agree on how large 416 * each usb transfer request should be. resync is done 417 * with set_interface or set_config. 418 */ 419 case 1: /* mod63 */ 420 expected = (i % maxpacket) % 63; 421 break; 422 /* always fail unsupported patterns */ 423 default: 424 expected = !*buf; 425 break; 426 } 427 if (*buf == expected) 428 continue; 429 ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected); 430 return -EINVAL; 431 } 432 return 0; 433 } 434 435 static void simple_free_urb(struct urb *urb) 436 { 437 unsigned long offset = buffer_offset(urb->transfer_buffer); 438 439 if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) 440 usb_free_coherent( 441 urb->dev, 442 urb->transfer_buffer_length + offset, 443 urb->transfer_buffer - offset, 444 urb->transfer_dma - offset); 445 else 446 kfree(urb->transfer_buffer - offset); 447 usb_free_urb(urb); 448 } 449 450 static int simple_io( 451 struct usbtest_dev *tdev, 452 struct urb *urb, 453 int iterations, 454 int vary, 455 int expected, 456 const char *label 457 ) 458 { 459 struct usb_device *udev = urb->dev; 460 int max = urb->transfer_buffer_length; 461 struct completion completion; 462 int retval = 0; 463 unsigned long expire; 464 465 urb->context = &completion; 466 while (retval == 0 && iterations-- > 0) { 467 init_completion(&completion); 468 if (usb_pipeout(urb->pipe)) { 469 simple_fill_buf(urb); 470 urb->transfer_flags |= URB_ZERO_PACKET; 471 } 472 retval = usb_submit_urb(urb, GFP_KERNEL); 473 if (retval != 0) 474 break; 475 476 expire = msecs_to_jiffies(SIMPLE_IO_TIMEOUT); 477 if (!wait_for_completion_timeout(&completion, expire)) { 478 usb_kill_urb(urb); 479 retval = (urb->status == -ENOENT ? 480 -ETIMEDOUT : urb->status); 481 } else { 482 retval = urb->status; 483 } 484 485 urb->dev = udev; 486 if (retval == 0 && usb_pipein(urb->pipe)) 487 retval = simple_check_buf(tdev, urb); 488 489 if (vary) { 490 int len = urb->transfer_buffer_length; 491 492 len += vary; 493 len %= max; 494 if (len == 0) 495 len = (vary < max) ? vary : max; 496 urb->transfer_buffer_length = len; 497 } 498 499 /* FIXME if endpoint halted, clear halt (and log) */ 500 } 501 urb->transfer_buffer_length = max; 502 503 if (expected != retval) 504 dev_err(&udev->dev, 505 "%s failed, iterations left %d, status %d (not %d)\n", 506 label, iterations, retval, expected); 507 return retval; 508 } 509 510 511 /*-------------------------------------------------------------------------*/ 512 513 /* We use scatterlist primitives to test queued I/O. 514 * Yes, this also tests the scatterlist primitives. 515 */ 516 517 static void free_sglist(struct scatterlist *sg, int nents) 518 { 519 unsigned i; 520 521 if (!sg) 522 return; 523 for (i = 0; i < nents; i++) { 524 if (!sg_page(&sg[i])) 525 continue; 526 kfree(sg_virt(&sg[i])); 527 } 528 kfree(sg); 529 } 530 531 static struct scatterlist * 532 alloc_sglist(int nents, int max, int vary, struct usbtest_dev *dev, int pipe) 533 { 534 struct scatterlist *sg; 535 unsigned int n_size = 0; 536 unsigned i; 537 unsigned size = max; 538 unsigned maxpacket = 539 get_maxpacket(interface_to_usbdev(dev->intf), pipe); 540 541 if (max == 0) 542 return NULL; 543 544 sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL); 545 if (!sg) 546 return NULL; 547 sg_init_table(sg, nents); 548 549 for (i = 0; i < nents; i++) { 550 char *buf; 551 unsigned j; 552 553 buf = kzalloc(size, GFP_KERNEL); 554 if (!buf) { 555 free_sglist(sg, i); 556 return NULL; 557 } 558 559 /* kmalloc pages are always physically contiguous! */ 560 sg_set_buf(&sg[i], buf, size); 561 562 switch (pattern) { 563 case 0: 564 /* already zeroed */ 565 break; 566 case 1: 567 for (j = 0; j < size; j++) 568 *buf++ = (u8) (((j + n_size) % maxpacket) % 63); 569 n_size += size; 570 break; 571 } 572 573 if (vary) { 574 size += vary; 575 size %= max; 576 if (size == 0) 577 size = (vary < max) ? vary : max; 578 } 579 } 580 581 return sg; 582 } 583 584 static void sg_timeout(unsigned long _req) 585 { 586 struct usb_sg_request *req = (struct usb_sg_request *) _req; 587 588 usb_sg_cancel(req); 589 } 590 591 static int perform_sglist( 592 struct usbtest_dev *tdev, 593 unsigned iterations, 594 int pipe, 595 struct usb_sg_request *req, 596 struct scatterlist *sg, 597 int nents 598 ) 599 { 600 struct usb_device *udev = testdev_to_usbdev(tdev); 601 int retval = 0; 602 struct timer_list sg_timer; 603 604 setup_timer_on_stack(&sg_timer, sg_timeout, (unsigned long) req); 605 606 while (retval == 0 && iterations-- > 0) { 607 retval = usb_sg_init(req, udev, pipe, 608 (udev->speed == USB_SPEED_HIGH) 609 ? (INTERRUPT_RATE << 3) 610 : INTERRUPT_RATE, 611 sg, nents, 0, GFP_KERNEL); 612 613 if (retval) 614 break; 615 mod_timer(&sg_timer, jiffies + 616 msecs_to_jiffies(SIMPLE_IO_TIMEOUT)); 617 usb_sg_wait(req); 618 if (!del_timer_sync(&sg_timer)) 619 retval = -ETIMEDOUT; 620 else 621 retval = req->status; 622 623 /* FIXME check resulting data pattern */ 624 625 /* FIXME if endpoint halted, clear halt (and log) */ 626 } 627 628 /* FIXME for unlink or fault handling tests, don't report 629 * failure if retval is as we expected ... 630 */ 631 if (retval) 632 ERROR(tdev, "perform_sglist failed, " 633 "iterations left %d, status %d\n", 634 iterations, retval); 635 return retval; 636 } 637 638 639 /*-------------------------------------------------------------------------*/ 640 641 /* unqueued control message testing 642 * 643 * there's a nice set of device functional requirements in chapter 9 of the 644 * usb 2.0 spec, which we can apply to ANY device, even ones that don't use 645 * special test firmware. 646 * 647 * we know the device is configured (or suspended) by the time it's visible 648 * through usbfs. we can't change that, so we won't test enumeration (which 649 * worked 'well enough' to get here, this time), power management (ditto), 650 * or remote wakeup (which needs human interaction). 651 */ 652 653 static unsigned realworld = 1; 654 module_param(realworld, uint, 0); 655 MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance"); 656 657 static int get_altsetting(struct usbtest_dev *dev) 658 { 659 struct usb_interface *iface = dev->intf; 660 struct usb_device *udev = interface_to_usbdev(iface); 661 int retval; 662 663 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 664 USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE, 665 0, iface->altsetting[0].desc.bInterfaceNumber, 666 dev->buf, 1, USB_CTRL_GET_TIMEOUT); 667 switch (retval) { 668 case 1: 669 return dev->buf[0]; 670 case 0: 671 retval = -ERANGE; 672 /* FALLTHROUGH */ 673 default: 674 return retval; 675 } 676 } 677 678 static int set_altsetting(struct usbtest_dev *dev, int alternate) 679 { 680 struct usb_interface *iface = dev->intf; 681 struct usb_device *udev; 682 683 if (alternate < 0 || alternate >= 256) 684 return -EINVAL; 685 686 udev = interface_to_usbdev(iface); 687 return usb_set_interface(udev, 688 iface->altsetting[0].desc.bInterfaceNumber, 689 alternate); 690 } 691 692 static int is_good_config(struct usbtest_dev *tdev, int len) 693 { 694 struct usb_config_descriptor *config; 695 696 if (len < sizeof(*config)) 697 return 0; 698 config = (struct usb_config_descriptor *) tdev->buf; 699 700 switch (config->bDescriptorType) { 701 case USB_DT_CONFIG: 702 case USB_DT_OTHER_SPEED_CONFIG: 703 if (config->bLength != 9) { 704 ERROR(tdev, "bogus config descriptor length\n"); 705 return 0; 706 } 707 /* this bit 'must be 1' but often isn't */ 708 if (!realworld && !(config->bmAttributes & 0x80)) { 709 ERROR(tdev, "high bit of config attributes not set\n"); 710 return 0; 711 } 712 if (config->bmAttributes & 0x1f) { /* reserved == 0 */ 713 ERROR(tdev, "reserved config bits set\n"); 714 return 0; 715 } 716 break; 717 default: 718 return 0; 719 } 720 721 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */ 722 return 1; 723 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */ 724 return 1; 725 ERROR(tdev, "bogus config descriptor read size\n"); 726 return 0; 727 } 728 729 static int is_good_ext(struct usbtest_dev *tdev, u8 *buf) 730 { 731 struct usb_ext_cap_descriptor *ext; 732 u32 attr; 733 734 ext = (struct usb_ext_cap_descriptor *) buf; 735 736 if (ext->bLength != USB_DT_USB_EXT_CAP_SIZE) { 737 ERROR(tdev, "bogus usb 2.0 extension descriptor length\n"); 738 return 0; 739 } 740 741 attr = le32_to_cpu(ext->bmAttributes); 742 /* bits[1:15] is used and others are reserved */ 743 if (attr & ~0xfffe) { /* reserved == 0 */ 744 ERROR(tdev, "reserved bits set\n"); 745 return 0; 746 } 747 748 return 1; 749 } 750 751 static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf) 752 { 753 struct usb_ss_cap_descriptor *ss; 754 755 ss = (struct usb_ss_cap_descriptor *) buf; 756 757 if (ss->bLength != USB_DT_USB_SS_CAP_SIZE) { 758 ERROR(tdev, "bogus superspeed device capability descriptor length\n"); 759 return 0; 760 } 761 762 /* 763 * only bit[1] of bmAttributes is used for LTM and others are 764 * reserved 765 */ 766 if (ss->bmAttributes & ~0x02) { /* reserved == 0 */ 767 ERROR(tdev, "reserved bits set in bmAttributes\n"); 768 return 0; 769 } 770 771 /* bits[0:3] of wSpeedSupported is used and others are reserved */ 772 if (le16_to_cpu(ss->wSpeedSupported) & ~0x0f) { /* reserved == 0 */ 773 ERROR(tdev, "reserved bits set in wSpeedSupported\n"); 774 return 0; 775 } 776 777 return 1; 778 } 779 780 static int is_good_con_id(struct usbtest_dev *tdev, u8 *buf) 781 { 782 struct usb_ss_container_id_descriptor *con_id; 783 784 con_id = (struct usb_ss_container_id_descriptor *) buf; 785 786 if (con_id->bLength != USB_DT_USB_SS_CONTN_ID_SIZE) { 787 ERROR(tdev, "bogus container id descriptor length\n"); 788 return 0; 789 } 790 791 if (con_id->bReserved) { /* reserved == 0 */ 792 ERROR(tdev, "reserved bits set\n"); 793 return 0; 794 } 795 796 return 1; 797 } 798 799 /* sanity test for standard requests working with usb_control_mesg() and some 800 * of the utility functions which use it. 801 * 802 * this doesn't test how endpoint halts behave or data toggles get set, since 803 * we won't do I/O to bulk/interrupt endpoints here (which is how to change 804 * halt or toggle). toggle testing is impractical without support from hcds. 805 * 806 * this avoids failing devices linux would normally work with, by not testing 807 * config/altsetting operations for devices that only support their defaults. 808 * such devices rarely support those needless operations. 809 * 810 * NOTE that since this is a sanity test, it's not examining boundary cases 811 * to see if usbcore, hcd, and device all behave right. such testing would 812 * involve varied read sizes and other operation sequences. 813 */ 814 static int ch9_postconfig(struct usbtest_dev *dev) 815 { 816 struct usb_interface *iface = dev->intf; 817 struct usb_device *udev = interface_to_usbdev(iface); 818 int i, alt, retval; 819 820 /* [9.2.3] if there's more than one altsetting, we need to be able to 821 * set and get each one. mostly trusts the descriptors from usbcore. 822 */ 823 for (i = 0; i < iface->num_altsetting; i++) { 824 825 /* 9.2.3 constrains the range here */ 826 alt = iface->altsetting[i].desc.bAlternateSetting; 827 if (alt < 0 || alt >= iface->num_altsetting) { 828 dev_err(&iface->dev, 829 "invalid alt [%d].bAltSetting = %d\n", 830 i, alt); 831 } 832 833 /* [real world] get/set unimplemented if there's only one */ 834 if (realworld && iface->num_altsetting == 1) 835 continue; 836 837 /* [9.4.10] set_interface */ 838 retval = set_altsetting(dev, alt); 839 if (retval) { 840 dev_err(&iface->dev, "can't set_interface = %d, %d\n", 841 alt, retval); 842 return retval; 843 } 844 845 /* [9.4.4] get_interface always works */ 846 retval = get_altsetting(dev); 847 if (retval != alt) { 848 dev_err(&iface->dev, "get alt should be %d, was %d\n", 849 alt, retval); 850 return (retval < 0) ? retval : -EDOM; 851 } 852 853 } 854 855 /* [real world] get_config unimplemented if there's only one */ 856 if (!realworld || udev->descriptor.bNumConfigurations != 1) { 857 int expected = udev->actconfig->desc.bConfigurationValue; 858 859 /* [9.4.2] get_configuration always works 860 * ... although some cheap devices (like one TI Hub I've got) 861 * won't return config descriptors except before set_config. 862 */ 863 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 864 USB_REQ_GET_CONFIGURATION, 865 USB_DIR_IN | USB_RECIP_DEVICE, 866 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT); 867 if (retval != 1 || dev->buf[0] != expected) { 868 dev_err(&iface->dev, "get config --> %d %d (1 %d)\n", 869 retval, dev->buf[0], expected); 870 return (retval < 0) ? retval : -EDOM; 871 } 872 } 873 874 /* there's always [9.4.3] a device descriptor [9.6.1] */ 875 retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0, 876 dev->buf, sizeof(udev->descriptor)); 877 if (retval != sizeof(udev->descriptor)) { 878 dev_err(&iface->dev, "dev descriptor --> %d\n", retval); 879 return (retval < 0) ? retval : -EDOM; 880 } 881 882 /* 883 * there's always [9.4.3] a bos device descriptor [9.6.2] in USB 884 * 3.0 spec 885 */ 886 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0210) { 887 struct usb_bos_descriptor *bos = NULL; 888 struct usb_dev_cap_header *header = NULL; 889 unsigned total, num, length; 890 u8 *buf; 891 892 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf, 893 sizeof(*udev->bos->desc)); 894 if (retval != sizeof(*udev->bos->desc)) { 895 dev_err(&iface->dev, "bos descriptor --> %d\n", retval); 896 return (retval < 0) ? retval : -EDOM; 897 } 898 899 bos = (struct usb_bos_descriptor *)dev->buf; 900 total = le16_to_cpu(bos->wTotalLength); 901 num = bos->bNumDeviceCaps; 902 903 if (total > TBUF_SIZE) 904 total = TBUF_SIZE; 905 906 /* 907 * get generic device-level capability descriptors [9.6.2] 908 * in USB 3.0 spec 909 */ 910 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf, 911 total); 912 if (retval != total) { 913 dev_err(&iface->dev, "bos descriptor set --> %d\n", 914 retval); 915 return (retval < 0) ? retval : -EDOM; 916 } 917 918 length = sizeof(*udev->bos->desc); 919 buf = dev->buf; 920 for (i = 0; i < num; i++) { 921 buf += length; 922 if (buf + sizeof(struct usb_dev_cap_header) > 923 dev->buf + total) 924 break; 925 926 header = (struct usb_dev_cap_header *)buf; 927 length = header->bLength; 928 929 if (header->bDescriptorType != 930 USB_DT_DEVICE_CAPABILITY) { 931 dev_warn(&udev->dev, "not device capability descriptor, skip\n"); 932 continue; 933 } 934 935 switch (header->bDevCapabilityType) { 936 case USB_CAP_TYPE_EXT: 937 if (buf + USB_DT_USB_EXT_CAP_SIZE > 938 dev->buf + total || 939 !is_good_ext(dev, buf)) { 940 dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n"); 941 return -EDOM; 942 } 943 break; 944 case USB_SS_CAP_TYPE: 945 if (buf + USB_DT_USB_SS_CAP_SIZE > 946 dev->buf + total || 947 !is_good_ss_cap(dev, buf)) { 948 dev_err(&iface->dev, "bogus superspeed device capability descriptor\n"); 949 return -EDOM; 950 } 951 break; 952 case CONTAINER_ID_TYPE: 953 if (buf + USB_DT_USB_SS_CONTN_ID_SIZE > 954 dev->buf + total || 955 !is_good_con_id(dev, buf)) { 956 dev_err(&iface->dev, "bogus container id descriptor\n"); 957 return -EDOM; 958 } 959 break; 960 default: 961 break; 962 } 963 } 964 } 965 966 /* there's always [9.4.3] at least one config descriptor [9.6.3] */ 967 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) { 968 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i, 969 dev->buf, TBUF_SIZE); 970 if (!is_good_config(dev, retval)) { 971 dev_err(&iface->dev, 972 "config [%d] descriptor --> %d\n", 973 i, retval); 974 return (retval < 0) ? retval : -EDOM; 975 } 976 977 /* FIXME cross-checking udev->config[i] to make sure usbcore 978 * parsed it right (etc) would be good testing paranoia 979 */ 980 } 981 982 /* and sometimes [9.2.6.6] speed dependent descriptors */ 983 if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) { 984 struct usb_qualifier_descriptor *d = NULL; 985 986 /* device qualifier [9.6.2] */ 987 retval = usb_get_descriptor(udev, 988 USB_DT_DEVICE_QUALIFIER, 0, dev->buf, 989 sizeof(struct usb_qualifier_descriptor)); 990 if (retval == -EPIPE) { 991 if (udev->speed == USB_SPEED_HIGH) { 992 dev_err(&iface->dev, 993 "hs dev qualifier --> %d\n", 994 retval); 995 return (retval < 0) ? retval : -EDOM; 996 } 997 /* usb2.0 but not high-speed capable; fine */ 998 } else if (retval != sizeof(struct usb_qualifier_descriptor)) { 999 dev_err(&iface->dev, "dev qualifier --> %d\n", retval); 1000 return (retval < 0) ? retval : -EDOM; 1001 } else 1002 d = (struct usb_qualifier_descriptor *) dev->buf; 1003 1004 /* might not have [9.6.2] any other-speed configs [9.6.4] */ 1005 if (d) { 1006 unsigned max = d->bNumConfigurations; 1007 for (i = 0; i < max; i++) { 1008 retval = usb_get_descriptor(udev, 1009 USB_DT_OTHER_SPEED_CONFIG, i, 1010 dev->buf, TBUF_SIZE); 1011 if (!is_good_config(dev, retval)) { 1012 dev_err(&iface->dev, 1013 "other speed config --> %d\n", 1014 retval); 1015 return (retval < 0) ? retval : -EDOM; 1016 } 1017 } 1018 } 1019 } 1020 /* FIXME fetch strings from at least the device descriptor */ 1021 1022 /* [9.4.5] get_status always works */ 1023 retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf); 1024 if (retval) { 1025 dev_err(&iface->dev, "get dev status --> %d\n", retval); 1026 return retval; 1027 } 1028 1029 /* FIXME configuration.bmAttributes says if we could try to set/clear 1030 * the device's remote wakeup feature ... if we can, test that here 1031 */ 1032 1033 retval = usb_get_status(udev, USB_RECIP_INTERFACE, 1034 iface->altsetting[0].desc.bInterfaceNumber, dev->buf); 1035 if (retval) { 1036 dev_err(&iface->dev, "get interface status --> %d\n", retval); 1037 return retval; 1038 } 1039 /* FIXME get status for each endpoint in the interface */ 1040 1041 return 0; 1042 } 1043 1044 /*-------------------------------------------------------------------------*/ 1045 1046 /* use ch9 requests to test whether: 1047 * (a) queues work for control, keeping N subtests queued and 1048 * active (auto-resubmit) for M loops through the queue. 1049 * (b) protocol stalls (control-only) will autorecover. 1050 * it's not like bulk/intr; no halt clearing. 1051 * (c) short control reads are reported and handled. 1052 * (d) queues are always processed in-order 1053 */ 1054 1055 struct ctrl_ctx { 1056 spinlock_t lock; 1057 struct usbtest_dev *dev; 1058 struct completion complete; 1059 unsigned count; 1060 unsigned pending; 1061 int status; 1062 struct urb **urb; 1063 struct usbtest_param_32 *param; 1064 int last; 1065 }; 1066 1067 #define NUM_SUBCASES 16 /* how many test subcases here? */ 1068 1069 struct subcase { 1070 struct usb_ctrlrequest setup; 1071 int number; 1072 int expected; 1073 }; 1074 1075 static void ctrl_complete(struct urb *urb) 1076 { 1077 struct ctrl_ctx *ctx = urb->context; 1078 struct usb_ctrlrequest *reqp; 1079 struct subcase *subcase; 1080 int status = urb->status; 1081 1082 reqp = (struct usb_ctrlrequest *)urb->setup_packet; 1083 subcase = container_of(reqp, struct subcase, setup); 1084 1085 spin_lock(&ctx->lock); 1086 ctx->count--; 1087 ctx->pending--; 1088 1089 /* queue must transfer and complete in fifo order, unless 1090 * usb_unlink_urb() is used to unlink something not at the 1091 * physical queue head (not tested). 1092 */ 1093 if (subcase->number > 0) { 1094 if ((subcase->number - ctx->last) != 1) { 1095 ERROR(ctx->dev, 1096 "subcase %d completed out of order, last %d\n", 1097 subcase->number, ctx->last); 1098 status = -EDOM; 1099 ctx->last = subcase->number; 1100 goto error; 1101 } 1102 } 1103 ctx->last = subcase->number; 1104 1105 /* succeed or fault in only one way? */ 1106 if (status == subcase->expected) 1107 status = 0; 1108 1109 /* async unlink for cleanup? */ 1110 else if (status != -ECONNRESET) { 1111 1112 /* some faults are allowed, not required */ 1113 if (subcase->expected > 0 && ( 1114 ((status == -subcase->expected /* happened */ 1115 || status == 0)))) /* didn't */ 1116 status = 0; 1117 /* sometimes more than one fault is allowed */ 1118 else if (subcase->number == 12 && status == -EPIPE) 1119 status = 0; 1120 else 1121 ERROR(ctx->dev, "subtest %d error, status %d\n", 1122 subcase->number, status); 1123 } 1124 1125 /* unexpected status codes mean errors; ideally, in hardware */ 1126 if (status) { 1127 error: 1128 if (ctx->status == 0) { 1129 int i; 1130 1131 ctx->status = status; 1132 ERROR(ctx->dev, "control queue %02x.%02x, err %d, " 1133 "%d left, subcase %d, len %d/%d\n", 1134 reqp->bRequestType, reqp->bRequest, 1135 status, ctx->count, subcase->number, 1136 urb->actual_length, 1137 urb->transfer_buffer_length); 1138 1139 /* FIXME this "unlink everything" exit route should 1140 * be a separate test case. 1141 */ 1142 1143 /* unlink whatever's still pending */ 1144 for (i = 1; i < ctx->param->sglen; i++) { 1145 struct urb *u = ctx->urb[ 1146 (i + subcase->number) 1147 % ctx->param->sglen]; 1148 1149 if (u == urb || !u->dev) 1150 continue; 1151 spin_unlock(&ctx->lock); 1152 status = usb_unlink_urb(u); 1153 spin_lock(&ctx->lock); 1154 switch (status) { 1155 case -EINPROGRESS: 1156 case -EBUSY: 1157 case -EIDRM: 1158 continue; 1159 default: 1160 ERROR(ctx->dev, "urb unlink --> %d\n", 1161 status); 1162 } 1163 } 1164 status = ctx->status; 1165 } 1166 } 1167 1168 /* resubmit if we need to, else mark this as done */ 1169 if ((status == 0) && (ctx->pending < ctx->count)) { 1170 status = usb_submit_urb(urb, GFP_ATOMIC); 1171 if (status != 0) { 1172 ERROR(ctx->dev, 1173 "can't resubmit ctrl %02x.%02x, err %d\n", 1174 reqp->bRequestType, reqp->bRequest, status); 1175 urb->dev = NULL; 1176 } else 1177 ctx->pending++; 1178 } else 1179 urb->dev = NULL; 1180 1181 /* signal completion when nothing's queued */ 1182 if (ctx->pending == 0) 1183 complete(&ctx->complete); 1184 spin_unlock(&ctx->lock); 1185 } 1186 1187 static int 1188 test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param) 1189 { 1190 struct usb_device *udev = testdev_to_usbdev(dev); 1191 struct urb **urb; 1192 struct ctrl_ctx context; 1193 int i; 1194 1195 if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen) 1196 return -EOPNOTSUPP; 1197 1198 spin_lock_init(&context.lock); 1199 context.dev = dev; 1200 init_completion(&context.complete); 1201 context.count = param->sglen * param->iterations; 1202 context.pending = 0; 1203 context.status = -ENOMEM; 1204 context.param = param; 1205 context.last = -1; 1206 1207 /* allocate and init the urbs we'll queue. 1208 * as with bulk/intr sglists, sglen is the queue depth; it also 1209 * controls which subtests run (more tests than sglen) or rerun. 1210 */ 1211 urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL); 1212 if (!urb) 1213 return -ENOMEM; 1214 for (i = 0; i < param->sglen; i++) { 1215 int pipe = usb_rcvctrlpipe(udev, 0); 1216 unsigned len; 1217 struct urb *u; 1218 struct usb_ctrlrequest req; 1219 struct subcase *reqp; 1220 1221 /* sign of this variable means: 1222 * -: tested code must return this (negative) error code 1223 * +: tested code may return this (negative too) error code 1224 */ 1225 int expected = 0; 1226 1227 /* requests here are mostly expected to succeed on any 1228 * device, but some are chosen to trigger protocol stalls 1229 * or short reads. 1230 */ 1231 memset(&req, 0, sizeof(req)); 1232 req.bRequest = USB_REQ_GET_DESCRIPTOR; 1233 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE; 1234 1235 switch (i % NUM_SUBCASES) { 1236 case 0: /* get device descriptor */ 1237 req.wValue = cpu_to_le16(USB_DT_DEVICE << 8); 1238 len = sizeof(struct usb_device_descriptor); 1239 break; 1240 case 1: /* get first config descriptor (only) */ 1241 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1242 len = sizeof(struct usb_config_descriptor); 1243 break; 1244 case 2: /* get altsetting (OFTEN STALLS) */ 1245 req.bRequest = USB_REQ_GET_INTERFACE; 1246 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE; 1247 /* index = 0 means first interface */ 1248 len = 1; 1249 expected = EPIPE; 1250 break; 1251 case 3: /* get interface status */ 1252 req.bRequest = USB_REQ_GET_STATUS; 1253 req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE; 1254 /* interface 0 */ 1255 len = 2; 1256 break; 1257 case 4: /* get device status */ 1258 req.bRequest = USB_REQ_GET_STATUS; 1259 req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE; 1260 len = 2; 1261 break; 1262 case 5: /* get device qualifier (MAY STALL) */ 1263 req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8); 1264 len = sizeof(struct usb_qualifier_descriptor); 1265 if (udev->speed != USB_SPEED_HIGH) 1266 expected = EPIPE; 1267 break; 1268 case 6: /* get first config descriptor, plus interface */ 1269 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1270 len = sizeof(struct usb_config_descriptor); 1271 len += sizeof(struct usb_interface_descriptor); 1272 break; 1273 case 7: /* get interface descriptor (ALWAYS STALLS) */ 1274 req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8); 1275 /* interface == 0 */ 1276 len = sizeof(struct usb_interface_descriptor); 1277 expected = -EPIPE; 1278 break; 1279 /* NOTE: two consecutive stalls in the queue here. 1280 * that tests fault recovery a bit more aggressively. */ 1281 case 8: /* clear endpoint halt (MAY STALL) */ 1282 req.bRequest = USB_REQ_CLEAR_FEATURE; 1283 req.bRequestType = USB_RECIP_ENDPOINT; 1284 /* wValue 0 == ep halt */ 1285 /* wIndex 0 == ep0 (shouldn't halt!) */ 1286 len = 0; 1287 pipe = usb_sndctrlpipe(udev, 0); 1288 expected = EPIPE; 1289 break; 1290 case 9: /* get endpoint status */ 1291 req.bRequest = USB_REQ_GET_STATUS; 1292 req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT; 1293 /* endpoint 0 */ 1294 len = 2; 1295 break; 1296 case 10: /* trigger short read (EREMOTEIO) */ 1297 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1298 len = 1024; 1299 expected = -EREMOTEIO; 1300 break; 1301 /* NOTE: two consecutive _different_ faults in the queue. */ 1302 case 11: /* get endpoint descriptor (ALWAYS STALLS) */ 1303 req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8); 1304 /* endpoint == 0 */ 1305 len = sizeof(struct usb_interface_descriptor); 1306 expected = EPIPE; 1307 break; 1308 /* NOTE: sometimes even a third fault in the queue! */ 1309 case 12: /* get string 0 descriptor (MAY STALL) */ 1310 req.wValue = cpu_to_le16(USB_DT_STRING << 8); 1311 /* string == 0, for language IDs */ 1312 len = sizeof(struct usb_interface_descriptor); 1313 /* may succeed when > 4 languages */ 1314 expected = EREMOTEIO; /* or EPIPE, if no strings */ 1315 break; 1316 case 13: /* short read, resembling case 10 */ 1317 req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0); 1318 /* last data packet "should" be DATA1, not DATA0 */ 1319 if (udev->speed == USB_SPEED_SUPER) 1320 len = 1024 - 512; 1321 else 1322 len = 1024 - udev->descriptor.bMaxPacketSize0; 1323 expected = -EREMOTEIO; 1324 break; 1325 case 14: /* short read; try to fill the last packet */ 1326 req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0); 1327 /* device descriptor size == 18 bytes */ 1328 len = udev->descriptor.bMaxPacketSize0; 1329 if (udev->speed == USB_SPEED_SUPER) 1330 len = 512; 1331 switch (len) { 1332 case 8: 1333 len = 24; 1334 break; 1335 case 16: 1336 len = 32; 1337 break; 1338 } 1339 expected = -EREMOTEIO; 1340 break; 1341 case 15: 1342 req.wValue = cpu_to_le16(USB_DT_BOS << 8); 1343 if (udev->bos) 1344 len = le16_to_cpu(udev->bos->desc->wTotalLength); 1345 else 1346 len = sizeof(struct usb_bos_descriptor); 1347 if (le16_to_cpu(udev->descriptor.bcdUSB) < 0x0201) 1348 expected = -EPIPE; 1349 break; 1350 default: 1351 ERROR(dev, "bogus number of ctrl queue testcases!\n"); 1352 context.status = -EINVAL; 1353 goto cleanup; 1354 } 1355 req.wLength = cpu_to_le16(len); 1356 urb[i] = u = simple_alloc_urb(udev, pipe, len, 0); 1357 if (!u) 1358 goto cleanup; 1359 1360 reqp = kmalloc(sizeof(*reqp), GFP_KERNEL); 1361 if (!reqp) 1362 goto cleanup; 1363 reqp->setup = req; 1364 reqp->number = i % NUM_SUBCASES; 1365 reqp->expected = expected; 1366 u->setup_packet = (char *) &reqp->setup; 1367 1368 u->context = &context; 1369 u->complete = ctrl_complete; 1370 } 1371 1372 /* queue the urbs */ 1373 context.urb = urb; 1374 spin_lock_irq(&context.lock); 1375 for (i = 0; i < param->sglen; i++) { 1376 context.status = usb_submit_urb(urb[i], GFP_ATOMIC); 1377 if (context.status != 0) { 1378 ERROR(dev, "can't submit urb[%d], status %d\n", 1379 i, context.status); 1380 context.count = context.pending; 1381 break; 1382 } 1383 context.pending++; 1384 } 1385 spin_unlock_irq(&context.lock); 1386 1387 /* FIXME set timer and time out; provide a disconnect hook */ 1388 1389 /* wait for the last one to complete */ 1390 if (context.pending > 0) 1391 wait_for_completion(&context.complete); 1392 1393 cleanup: 1394 for (i = 0; i < param->sglen; i++) { 1395 if (!urb[i]) 1396 continue; 1397 urb[i]->dev = udev; 1398 kfree(urb[i]->setup_packet); 1399 simple_free_urb(urb[i]); 1400 } 1401 kfree(urb); 1402 return context.status; 1403 } 1404 #undef NUM_SUBCASES 1405 1406 1407 /*-------------------------------------------------------------------------*/ 1408 1409 static void unlink1_callback(struct urb *urb) 1410 { 1411 int status = urb->status; 1412 1413 /* we "know" -EPIPE (stall) never happens */ 1414 if (!status) 1415 status = usb_submit_urb(urb, GFP_ATOMIC); 1416 if (status) { 1417 urb->status = status; 1418 complete(urb->context); 1419 } 1420 } 1421 1422 static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async) 1423 { 1424 struct urb *urb; 1425 struct completion completion; 1426 int retval = 0; 1427 1428 init_completion(&completion); 1429 urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size, 0); 1430 if (!urb) 1431 return -ENOMEM; 1432 urb->context = &completion; 1433 urb->complete = unlink1_callback; 1434 1435 if (usb_pipeout(urb->pipe)) { 1436 simple_fill_buf(urb); 1437 urb->transfer_flags |= URB_ZERO_PACKET; 1438 } 1439 1440 /* keep the endpoint busy. there are lots of hc/hcd-internal 1441 * states, and testing should get to all of them over time. 1442 * 1443 * FIXME want additional tests for when endpoint is STALLing 1444 * due to errors, or is just NAKing requests. 1445 */ 1446 retval = usb_submit_urb(urb, GFP_KERNEL); 1447 if (retval != 0) { 1448 dev_err(&dev->intf->dev, "submit fail %d\n", retval); 1449 return retval; 1450 } 1451 1452 /* unlinking that should always work. variable delay tests more 1453 * hcd states and code paths, even with little other system load. 1454 */ 1455 msleep(jiffies % (2 * INTERRUPT_RATE)); 1456 if (async) { 1457 while (!completion_done(&completion)) { 1458 retval = usb_unlink_urb(urb); 1459 1460 if (retval == 0 && usb_pipein(urb->pipe)) 1461 retval = simple_check_buf(dev, urb); 1462 1463 switch (retval) { 1464 case -EBUSY: 1465 case -EIDRM: 1466 /* we can't unlink urbs while they're completing 1467 * or if they've completed, and we haven't 1468 * resubmitted. "normal" drivers would prevent 1469 * resubmission, but since we're testing unlink 1470 * paths, we can't. 1471 */ 1472 ERROR(dev, "unlink retry\n"); 1473 continue; 1474 case 0: 1475 case -EINPROGRESS: 1476 break; 1477 1478 default: 1479 dev_err(&dev->intf->dev, 1480 "unlink fail %d\n", retval); 1481 return retval; 1482 } 1483 1484 break; 1485 } 1486 } else 1487 usb_kill_urb(urb); 1488 1489 wait_for_completion(&completion); 1490 retval = urb->status; 1491 simple_free_urb(urb); 1492 1493 if (async) 1494 return (retval == -ECONNRESET) ? 0 : retval - 1000; 1495 else 1496 return (retval == -ENOENT || retval == -EPERM) ? 1497 0 : retval - 2000; 1498 } 1499 1500 static int unlink_simple(struct usbtest_dev *dev, int pipe, int len) 1501 { 1502 int retval = 0; 1503 1504 /* test sync and async paths */ 1505 retval = unlink1(dev, pipe, len, 1); 1506 if (!retval) 1507 retval = unlink1(dev, pipe, len, 0); 1508 return retval; 1509 } 1510 1511 /*-------------------------------------------------------------------------*/ 1512 1513 struct queued_ctx { 1514 struct completion complete; 1515 atomic_t pending; 1516 unsigned num; 1517 int status; 1518 struct urb **urbs; 1519 }; 1520 1521 static void unlink_queued_callback(struct urb *urb) 1522 { 1523 int status = urb->status; 1524 struct queued_ctx *ctx = urb->context; 1525 1526 if (ctx->status) 1527 goto done; 1528 if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) { 1529 if (status == -ECONNRESET) 1530 goto done; 1531 /* What error should we report if the URB completed normally? */ 1532 } 1533 if (status != 0) 1534 ctx->status = status; 1535 1536 done: 1537 if (atomic_dec_and_test(&ctx->pending)) 1538 complete(&ctx->complete); 1539 } 1540 1541 static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num, 1542 unsigned size) 1543 { 1544 struct queued_ctx ctx; 1545 struct usb_device *udev = testdev_to_usbdev(dev); 1546 void *buf; 1547 dma_addr_t buf_dma; 1548 int i; 1549 int retval = -ENOMEM; 1550 1551 init_completion(&ctx.complete); 1552 atomic_set(&ctx.pending, 1); /* One more than the actual value */ 1553 ctx.num = num; 1554 ctx.status = 0; 1555 1556 buf = usb_alloc_coherent(udev, size, GFP_KERNEL, &buf_dma); 1557 if (!buf) 1558 return retval; 1559 memset(buf, 0, size); 1560 1561 /* Allocate and init the urbs we'll queue */ 1562 ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL); 1563 if (!ctx.urbs) 1564 goto free_buf; 1565 for (i = 0; i < num; i++) { 1566 ctx.urbs[i] = usb_alloc_urb(0, GFP_KERNEL); 1567 if (!ctx.urbs[i]) 1568 goto free_urbs; 1569 usb_fill_bulk_urb(ctx.urbs[i], udev, pipe, buf, size, 1570 unlink_queued_callback, &ctx); 1571 ctx.urbs[i]->transfer_dma = buf_dma; 1572 ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; 1573 1574 if (usb_pipeout(ctx.urbs[i]->pipe)) { 1575 simple_fill_buf(ctx.urbs[i]); 1576 ctx.urbs[i]->transfer_flags |= URB_ZERO_PACKET; 1577 } 1578 } 1579 1580 /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */ 1581 for (i = 0; i < num; i++) { 1582 atomic_inc(&ctx.pending); 1583 retval = usb_submit_urb(ctx.urbs[i], GFP_KERNEL); 1584 if (retval != 0) { 1585 dev_err(&dev->intf->dev, "submit urbs[%d] fail %d\n", 1586 i, retval); 1587 atomic_dec(&ctx.pending); 1588 ctx.status = retval; 1589 break; 1590 } 1591 } 1592 if (i == num) { 1593 usb_unlink_urb(ctx.urbs[num - 4]); 1594 usb_unlink_urb(ctx.urbs[num - 2]); 1595 } else { 1596 while (--i >= 0) 1597 usb_unlink_urb(ctx.urbs[i]); 1598 } 1599 1600 if (atomic_dec_and_test(&ctx.pending)) /* The extra count */ 1601 complete(&ctx.complete); 1602 wait_for_completion(&ctx.complete); 1603 retval = ctx.status; 1604 1605 free_urbs: 1606 for (i = 0; i < num; i++) 1607 usb_free_urb(ctx.urbs[i]); 1608 kfree(ctx.urbs); 1609 free_buf: 1610 usb_free_coherent(udev, size, buf, buf_dma); 1611 return retval; 1612 } 1613 1614 /*-------------------------------------------------------------------------*/ 1615 1616 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) 1617 { 1618 int retval; 1619 u16 status; 1620 1621 /* shouldn't look or act halted */ 1622 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status); 1623 if (retval < 0) { 1624 ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n", 1625 ep, retval); 1626 return retval; 1627 } 1628 if (status != 0) { 1629 ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status); 1630 return -EINVAL; 1631 } 1632 retval = simple_io(tdev, urb, 1, 0, 0, __func__); 1633 if (retval != 0) 1634 return -EINVAL; 1635 return 0; 1636 } 1637 1638 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb) 1639 { 1640 int retval; 1641 u16 status; 1642 1643 /* should look and act halted */ 1644 retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status); 1645 if (retval < 0) { 1646 ERROR(tdev, "ep %02x couldn't get halt status, %d\n", 1647 ep, retval); 1648 return retval; 1649 } 1650 if (status != 1) { 1651 ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status); 1652 return -EINVAL; 1653 } 1654 retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__); 1655 if (retval != -EPIPE) 1656 return -EINVAL; 1657 retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted"); 1658 if (retval != -EPIPE) 1659 return -EINVAL; 1660 return 0; 1661 } 1662 1663 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb) 1664 { 1665 int retval; 1666 1667 /* shouldn't look or act halted now */ 1668 retval = verify_not_halted(tdev, ep, urb); 1669 if (retval < 0) 1670 return retval; 1671 1672 /* set halt (protocol test only), verify it worked */ 1673 retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0), 1674 USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT, 1675 USB_ENDPOINT_HALT, ep, 1676 NULL, 0, USB_CTRL_SET_TIMEOUT); 1677 if (retval < 0) { 1678 ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval); 1679 return retval; 1680 } 1681 retval = verify_halted(tdev, ep, urb); 1682 if (retval < 0) { 1683 int ret; 1684 1685 /* clear halt anyways, else further tests will fail */ 1686 ret = usb_clear_halt(urb->dev, urb->pipe); 1687 if (ret) 1688 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", 1689 ep, ret); 1690 1691 return retval; 1692 } 1693 1694 /* clear halt (tests API + protocol), verify it worked */ 1695 retval = usb_clear_halt(urb->dev, urb->pipe); 1696 if (retval < 0) { 1697 ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval); 1698 return retval; 1699 } 1700 retval = verify_not_halted(tdev, ep, urb); 1701 if (retval < 0) 1702 return retval; 1703 1704 /* NOTE: could also verify SET_INTERFACE clear halts ... */ 1705 1706 return 0; 1707 } 1708 1709 static int halt_simple(struct usbtest_dev *dev) 1710 { 1711 int ep; 1712 int retval = 0; 1713 struct urb *urb; 1714 struct usb_device *udev = testdev_to_usbdev(dev); 1715 1716 if (udev->speed == USB_SPEED_SUPER) 1717 urb = simple_alloc_urb(udev, 0, 1024, 0); 1718 else 1719 urb = simple_alloc_urb(udev, 0, 512, 0); 1720 if (urb == NULL) 1721 return -ENOMEM; 1722 1723 if (dev->in_pipe) { 1724 ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN; 1725 urb->pipe = dev->in_pipe; 1726 retval = test_halt(dev, ep, urb); 1727 if (retval < 0) 1728 goto done; 1729 } 1730 1731 if (dev->out_pipe) { 1732 ep = usb_pipeendpoint(dev->out_pipe); 1733 urb->pipe = dev->out_pipe; 1734 retval = test_halt(dev, ep, urb); 1735 } 1736 done: 1737 simple_free_urb(urb); 1738 return retval; 1739 } 1740 1741 /*-------------------------------------------------------------------------*/ 1742 1743 /* Control OUT tests use the vendor control requests from Intel's 1744 * USB 2.0 compliance test device: write a buffer, read it back. 1745 * 1746 * Intel's spec only _requires_ that it work for one packet, which 1747 * is pretty weak. Some HCDs place limits here; most devices will 1748 * need to be able to handle more than one OUT data packet. We'll 1749 * try whatever we're told to try. 1750 */ 1751 static int ctrl_out(struct usbtest_dev *dev, 1752 unsigned count, unsigned length, unsigned vary, unsigned offset) 1753 { 1754 unsigned i, j, len; 1755 int retval; 1756 u8 *buf; 1757 char *what = "?"; 1758 struct usb_device *udev; 1759 1760 if (length < 1 || length > 0xffff || vary >= length) 1761 return -EINVAL; 1762 1763 buf = kmalloc(length + offset, GFP_KERNEL); 1764 if (!buf) 1765 return -ENOMEM; 1766 1767 buf += offset; 1768 udev = testdev_to_usbdev(dev); 1769 len = length; 1770 retval = 0; 1771 1772 /* NOTE: hardware might well act differently if we pushed it 1773 * with lots back-to-back queued requests. 1774 */ 1775 for (i = 0; i < count; i++) { 1776 /* write patterned data */ 1777 for (j = 0; j < len; j++) 1778 buf[j] = (u8)(i + j); 1779 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 1780 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR, 1781 0, 0, buf, len, USB_CTRL_SET_TIMEOUT); 1782 if (retval != len) { 1783 what = "write"; 1784 if (retval >= 0) { 1785 ERROR(dev, "ctrl_out, wlen %d (expected %d)\n", 1786 retval, len); 1787 retval = -EBADMSG; 1788 } 1789 break; 1790 } 1791 1792 /* read it back -- assuming nothing intervened!! */ 1793 retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 1794 0x5c, USB_DIR_IN|USB_TYPE_VENDOR, 1795 0, 0, buf, len, USB_CTRL_GET_TIMEOUT); 1796 if (retval != len) { 1797 what = "read"; 1798 if (retval >= 0) { 1799 ERROR(dev, "ctrl_out, rlen %d (expected %d)\n", 1800 retval, len); 1801 retval = -EBADMSG; 1802 } 1803 break; 1804 } 1805 1806 /* fail if we can't verify */ 1807 for (j = 0; j < len; j++) { 1808 if (buf[j] != (u8)(i + j)) { 1809 ERROR(dev, "ctrl_out, byte %d is %d not %d\n", 1810 j, buf[j], (u8)(i + j)); 1811 retval = -EBADMSG; 1812 break; 1813 } 1814 } 1815 if (retval < 0) { 1816 what = "verify"; 1817 break; 1818 } 1819 1820 len += vary; 1821 1822 /* [real world] the "zero bytes IN" case isn't really used. 1823 * hardware can easily trip up in this weird case, since its 1824 * status stage is IN, not OUT like other ep0in transfers. 1825 */ 1826 if (len > length) 1827 len = realworld ? 1 : 0; 1828 } 1829 1830 if (retval < 0) 1831 ERROR(dev, "ctrl_out %s failed, code %d, count %d\n", 1832 what, retval, i); 1833 1834 kfree(buf - offset); 1835 return retval; 1836 } 1837 1838 /*-------------------------------------------------------------------------*/ 1839 1840 /* ISO/BULK tests ... mimics common usage 1841 * - buffer length is split into N packets (mostly maxpacket sized) 1842 * - multi-buffers according to sglen 1843 */ 1844 1845 struct transfer_context { 1846 unsigned count; 1847 unsigned pending; 1848 spinlock_t lock; 1849 struct completion done; 1850 int submit_error; 1851 unsigned long errors; 1852 unsigned long packet_count; 1853 struct usbtest_dev *dev; 1854 bool is_iso; 1855 }; 1856 1857 static void complicated_callback(struct urb *urb) 1858 { 1859 struct transfer_context *ctx = urb->context; 1860 1861 spin_lock(&ctx->lock); 1862 ctx->count--; 1863 1864 ctx->packet_count += urb->number_of_packets; 1865 if (urb->error_count > 0) 1866 ctx->errors += urb->error_count; 1867 else if (urb->status != 0) 1868 ctx->errors += (ctx->is_iso ? urb->number_of_packets : 1); 1869 else if (urb->actual_length != urb->transfer_buffer_length) 1870 ctx->errors++; 1871 else if (check_guard_bytes(ctx->dev, urb) != 0) 1872 ctx->errors++; 1873 1874 if (urb->status == 0 && ctx->count > (ctx->pending - 1) 1875 && !ctx->submit_error) { 1876 int status = usb_submit_urb(urb, GFP_ATOMIC); 1877 switch (status) { 1878 case 0: 1879 goto done; 1880 default: 1881 dev_err(&ctx->dev->intf->dev, 1882 "resubmit err %d\n", 1883 status); 1884 /* FALLTHROUGH */ 1885 case -ENODEV: /* disconnected */ 1886 case -ESHUTDOWN: /* endpoint disabled */ 1887 ctx->submit_error = 1; 1888 break; 1889 } 1890 } 1891 1892 ctx->pending--; 1893 if (ctx->pending == 0) { 1894 if (ctx->errors) 1895 dev_err(&ctx->dev->intf->dev, 1896 "during the test, %lu errors out of %lu\n", 1897 ctx->errors, ctx->packet_count); 1898 complete(&ctx->done); 1899 } 1900 done: 1901 spin_unlock(&ctx->lock); 1902 } 1903 1904 static struct urb *iso_alloc_urb( 1905 struct usb_device *udev, 1906 int pipe, 1907 struct usb_endpoint_descriptor *desc, 1908 long bytes, 1909 unsigned offset 1910 ) 1911 { 1912 struct urb *urb; 1913 unsigned i, maxp, packets; 1914 1915 if (bytes < 0 || !desc) 1916 return NULL; 1917 maxp = 0x7ff & usb_endpoint_maxp(desc); 1918 maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11)); 1919 packets = DIV_ROUND_UP(bytes, maxp); 1920 1921 urb = usb_alloc_urb(packets, GFP_KERNEL); 1922 if (!urb) 1923 return urb; 1924 urb->dev = udev; 1925 urb->pipe = pipe; 1926 1927 urb->number_of_packets = packets; 1928 urb->transfer_buffer_length = bytes; 1929 urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset, 1930 GFP_KERNEL, 1931 &urb->transfer_dma); 1932 if (!urb->transfer_buffer) { 1933 usb_free_urb(urb); 1934 return NULL; 1935 } 1936 if (offset) { 1937 memset(urb->transfer_buffer, GUARD_BYTE, offset); 1938 urb->transfer_buffer += offset; 1939 urb->transfer_dma += offset; 1940 } 1941 /* For inbound transfers use guard byte so that test fails if 1942 data not correctly copied */ 1943 memset(urb->transfer_buffer, 1944 usb_pipein(urb->pipe) ? GUARD_BYTE : 0, 1945 bytes); 1946 1947 for (i = 0; i < packets; i++) { 1948 /* here, only the last packet will be short */ 1949 urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp); 1950 bytes -= urb->iso_frame_desc[i].length; 1951 1952 urb->iso_frame_desc[i].offset = maxp * i; 1953 } 1954 1955 urb->complete = complicated_callback; 1956 /* urb->context = SET BY CALLER */ 1957 urb->interval = 1 << (desc->bInterval - 1); 1958 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 1959 return urb; 1960 } 1961 1962 static int 1963 test_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param, 1964 int pipe, struct usb_endpoint_descriptor *desc, unsigned offset) 1965 { 1966 struct transfer_context context; 1967 struct usb_device *udev; 1968 unsigned i; 1969 unsigned long packets = 0; 1970 int status = 0; 1971 struct urb *urbs[param->sglen]; 1972 1973 memset(&context, 0, sizeof(context)); 1974 context.count = param->iterations * param->sglen; 1975 context.dev = dev; 1976 context.is_iso = !!desc; 1977 init_completion(&context.done); 1978 spin_lock_init(&context.lock); 1979 1980 udev = testdev_to_usbdev(dev); 1981 1982 for (i = 0; i < param->sglen; i++) { 1983 if (context.is_iso) 1984 urbs[i] = iso_alloc_urb(udev, pipe, desc, 1985 param->length, offset); 1986 else 1987 urbs[i] = complicated_alloc_urb(udev, pipe, 1988 param->length, 0); 1989 1990 if (!urbs[i]) { 1991 status = -ENOMEM; 1992 goto fail; 1993 } 1994 packets += urbs[i]->number_of_packets; 1995 urbs[i]->context = &context; 1996 } 1997 packets *= param->iterations; 1998 1999 if (context.is_iso) { 2000 dev_info(&dev->intf->dev, 2001 "iso period %d %sframes, wMaxPacket %d, transactions: %d\n", 2002 1 << (desc->bInterval - 1), 2003 (udev->speed == USB_SPEED_HIGH) ? "micro" : "", 2004 usb_endpoint_maxp(desc) & 0x7ff, 2005 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11))); 2006 2007 dev_info(&dev->intf->dev, 2008 "total %lu msec (%lu packets)\n", 2009 (packets * (1 << (desc->bInterval - 1))) 2010 / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1), 2011 packets); 2012 } 2013 2014 spin_lock_irq(&context.lock); 2015 for (i = 0; i < param->sglen; i++) { 2016 ++context.pending; 2017 status = usb_submit_urb(urbs[i], GFP_ATOMIC); 2018 if (status < 0) { 2019 ERROR(dev, "submit iso[%d], error %d\n", i, status); 2020 if (i == 0) { 2021 spin_unlock_irq(&context.lock); 2022 goto fail; 2023 } 2024 2025 simple_free_urb(urbs[i]); 2026 urbs[i] = NULL; 2027 context.pending--; 2028 context.submit_error = 1; 2029 break; 2030 } 2031 } 2032 spin_unlock_irq(&context.lock); 2033 2034 wait_for_completion(&context.done); 2035 2036 for (i = 0; i < param->sglen; i++) { 2037 if (urbs[i]) 2038 simple_free_urb(urbs[i]); 2039 } 2040 /* 2041 * Isochronous transfers are expected to fail sometimes. As an 2042 * arbitrary limit, we will report an error if any submissions 2043 * fail or if the transfer failure rate is > 10%. 2044 */ 2045 if (status != 0) 2046 ; 2047 else if (context.submit_error) 2048 status = -EACCES; 2049 else if (context.errors > 2050 (context.is_iso ? context.packet_count / 10 : 0)) 2051 status = -EIO; 2052 return status; 2053 2054 fail: 2055 for (i = 0; i < param->sglen; i++) { 2056 if (urbs[i]) 2057 simple_free_urb(urbs[i]); 2058 } 2059 return status; 2060 } 2061 2062 static int test_unaligned_bulk( 2063 struct usbtest_dev *tdev, 2064 int pipe, 2065 unsigned length, 2066 int iterations, 2067 unsigned transfer_flags, 2068 const char *label) 2069 { 2070 int retval; 2071 struct urb *urb = usbtest_alloc_urb(testdev_to_usbdev(tdev), 2072 pipe, length, transfer_flags, 1, 0, simple_callback); 2073 2074 if (!urb) 2075 return -ENOMEM; 2076 2077 retval = simple_io(tdev, urb, iterations, 0, 0, label); 2078 simple_free_urb(urb); 2079 return retval; 2080 } 2081 2082 /* Run tests. */ 2083 static int 2084 usbtest_do_ioctl(struct usb_interface *intf, struct usbtest_param_32 *param) 2085 { 2086 struct usbtest_dev *dev = usb_get_intfdata(intf); 2087 struct usb_device *udev = testdev_to_usbdev(dev); 2088 struct urb *urb; 2089 struct scatterlist *sg; 2090 struct usb_sg_request req; 2091 unsigned i; 2092 int retval = -EOPNOTSUPP; 2093 2094 if (param->iterations <= 0) 2095 return -EINVAL; 2096 /* 2097 * Just a bunch of test cases that every HCD is expected to handle. 2098 * 2099 * Some may need specific firmware, though it'd be good to have 2100 * one firmware image to handle all the test cases. 2101 * 2102 * FIXME add more tests! cancel requests, verify the data, control 2103 * queueing, concurrent read+write threads, and so on. 2104 */ 2105 switch (param->test_num) { 2106 2107 case 0: 2108 dev_info(&intf->dev, "TEST 0: NOP\n"); 2109 retval = 0; 2110 break; 2111 2112 /* Simple non-queued bulk I/O tests */ 2113 case 1: 2114 if (dev->out_pipe == 0) 2115 break; 2116 dev_info(&intf->dev, 2117 "TEST 1: write %d bytes %u times\n", 2118 param->length, param->iterations); 2119 urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0); 2120 if (!urb) { 2121 retval = -ENOMEM; 2122 break; 2123 } 2124 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 2125 retval = simple_io(dev, urb, param->iterations, 0, 0, "test1"); 2126 simple_free_urb(urb); 2127 break; 2128 case 2: 2129 if (dev->in_pipe == 0) 2130 break; 2131 dev_info(&intf->dev, 2132 "TEST 2: read %d bytes %u times\n", 2133 param->length, param->iterations); 2134 urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0); 2135 if (!urb) { 2136 retval = -ENOMEM; 2137 break; 2138 } 2139 /* FIRMWARE: bulk source (maybe generates short writes) */ 2140 retval = simple_io(dev, urb, param->iterations, 0, 0, "test2"); 2141 simple_free_urb(urb); 2142 break; 2143 case 3: 2144 if (dev->out_pipe == 0 || param->vary == 0) 2145 break; 2146 dev_info(&intf->dev, 2147 "TEST 3: write/%d 0..%d bytes %u times\n", 2148 param->vary, param->length, param->iterations); 2149 urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0); 2150 if (!urb) { 2151 retval = -ENOMEM; 2152 break; 2153 } 2154 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 2155 retval = simple_io(dev, urb, param->iterations, param->vary, 2156 0, "test3"); 2157 simple_free_urb(urb); 2158 break; 2159 case 4: 2160 if (dev->in_pipe == 0 || param->vary == 0) 2161 break; 2162 dev_info(&intf->dev, 2163 "TEST 4: read/%d 0..%d bytes %u times\n", 2164 param->vary, param->length, param->iterations); 2165 urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0); 2166 if (!urb) { 2167 retval = -ENOMEM; 2168 break; 2169 } 2170 /* FIRMWARE: bulk source (maybe generates short writes) */ 2171 retval = simple_io(dev, urb, param->iterations, param->vary, 2172 0, "test4"); 2173 simple_free_urb(urb); 2174 break; 2175 2176 /* Queued bulk I/O tests */ 2177 case 5: 2178 if (dev->out_pipe == 0 || param->sglen == 0) 2179 break; 2180 dev_info(&intf->dev, 2181 "TEST 5: write %d sglists %d entries of %d bytes\n", 2182 param->iterations, 2183 param->sglen, param->length); 2184 sg = alloc_sglist(param->sglen, param->length, 2185 0, dev, dev->out_pipe); 2186 if (!sg) { 2187 retval = -ENOMEM; 2188 break; 2189 } 2190 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 2191 retval = perform_sglist(dev, param->iterations, dev->out_pipe, 2192 &req, sg, param->sglen); 2193 free_sglist(sg, param->sglen); 2194 break; 2195 2196 case 6: 2197 if (dev->in_pipe == 0 || param->sglen == 0) 2198 break; 2199 dev_info(&intf->dev, 2200 "TEST 6: read %d sglists %d entries of %d bytes\n", 2201 param->iterations, 2202 param->sglen, param->length); 2203 sg = alloc_sglist(param->sglen, param->length, 2204 0, dev, dev->in_pipe); 2205 if (!sg) { 2206 retval = -ENOMEM; 2207 break; 2208 } 2209 /* FIRMWARE: bulk source (maybe generates short writes) */ 2210 retval = perform_sglist(dev, param->iterations, dev->in_pipe, 2211 &req, sg, param->sglen); 2212 free_sglist(sg, param->sglen); 2213 break; 2214 case 7: 2215 if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0) 2216 break; 2217 dev_info(&intf->dev, 2218 "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n", 2219 param->vary, param->iterations, 2220 param->sglen, param->length); 2221 sg = alloc_sglist(param->sglen, param->length, 2222 param->vary, dev, dev->out_pipe); 2223 if (!sg) { 2224 retval = -ENOMEM; 2225 break; 2226 } 2227 /* FIRMWARE: bulk sink (maybe accepts short writes) */ 2228 retval = perform_sglist(dev, param->iterations, dev->out_pipe, 2229 &req, sg, param->sglen); 2230 free_sglist(sg, param->sglen); 2231 break; 2232 case 8: 2233 if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0) 2234 break; 2235 dev_info(&intf->dev, 2236 "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n", 2237 param->vary, param->iterations, 2238 param->sglen, param->length); 2239 sg = alloc_sglist(param->sglen, param->length, 2240 param->vary, dev, dev->in_pipe); 2241 if (!sg) { 2242 retval = -ENOMEM; 2243 break; 2244 } 2245 /* FIRMWARE: bulk source (maybe generates short writes) */ 2246 retval = perform_sglist(dev, param->iterations, dev->in_pipe, 2247 &req, sg, param->sglen); 2248 free_sglist(sg, param->sglen); 2249 break; 2250 2251 /* non-queued sanity tests for control (chapter 9 subset) */ 2252 case 9: 2253 retval = 0; 2254 dev_info(&intf->dev, 2255 "TEST 9: ch9 (subset) control tests, %d times\n", 2256 param->iterations); 2257 for (i = param->iterations; retval == 0 && i--; /* NOP */) 2258 retval = ch9_postconfig(dev); 2259 if (retval) 2260 dev_err(&intf->dev, "ch9 subset failed, " 2261 "iterations left %d\n", i); 2262 break; 2263 2264 /* queued control messaging */ 2265 case 10: 2266 retval = 0; 2267 dev_info(&intf->dev, 2268 "TEST 10: queue %d control calls, %d times\n", 2269 param->sglen, 2270 param->iterations); 2271 retval = test_ctrl_queue(dev, param); 2272 break; 2273 2274 /* simple non-queued unlinks (ring with one urb) */ 2275 case 11: 2276 if (dev->in_pipe == 0 || !param->length) 2277 break; 2278 retval = 0; 2279 dev_info(&intf->dev, "TEST 11: unlink %d reads of %d\n", 2280 param->iterations, param->length); 2281 for (i = param->iterations; retval == 0 && i--; /* NOP */) 2282 retval = unlink_simple(dev, dev->in_pipe, 2283 param->length); 2284 if (retval) 2285 dev_err(&intf->dev, "unlink reads failed %d, " 2286 "iterations left %d\n", retval, i); 2287 break; 2288 case 12: 2289 if (dev->out_pipe == 0 || !param->length) 2290 break; 2291 retval = 0; 2292 dev_info(&intf->dev, "TEST 12: unlink %d writes of %d\n", 2293 param->iterations, param->length); 2294 for (i = param->iterations; retval == 0 && i--; /* NOP */) 2295 retval = unlink_simple(dev, dev->out_pipe, 2296 param->length); 2297 if (retval) 2298 dev_err(&intf->dev, "unlink writes failed %d, " 2299 "iterations left %d\n", retval, i); 2300 break; 2301 2302 /* ep halt tests */ 2303 case 13: 2304 if (dev->out_pipe == 0 && dev->in_pipe == 0) 2305 break; 2306 retval = 0; 2307 dev_info(&intf->dev, "TEST 13: set/clear %d halts\n", 2308 param->iterations); 2309 for (i = param->iterations; retval == 0 && i--; /* NOP */) 2310 retval = halt_simple(dev); 2311 2312 if (retval) 2313 ERROR(dev, "halts failed, iterations left %d\n", i); 2314 break; 2315 2316 /* control write tests */ 2317 case 14: 2318 if (!dev->info->ctrl_out) 2319 break; 2320 dev_info(&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n", 2321 param->iterations, 2322 realworld ? 1 : 0, param->length, 2323 param->vary); 2324 retval = ctrl_out(dev, param->iterations, 2325 param->length, param->vary, 0); 2326 break; 2327 2328 /* iso write tests */ 2329 case 15: 2330 if (dev->out_iso_pipe == 0 || param->sglen == 0) 2331 break; 2332 dev_info(&intf->dev, 2333 "TEST 15: write %d iso, %d entries of %d bytes\n", 2334 param->iterations, 2335 param->sglen, param->length); 2336 /* FIRMWARE: iso sink */ 2337 retval = test_queue(dev, param, 2338 dev->out_iso_pipe, dev->iso_out, 0); 2339 break; 2340 2341 /* iso read tests */ 2342 case 16: 2343 if (dev->in_iso_pipe == 0 || param->sglen == 0) 2344 break; 2345 dev_info(&intf->dev, 2346 "TEST 16: read %d iso, %d entries of %d bytes\n", 2347 param->iterations, 2348 param->sglen, param->length); 2349 /* FIRMWARE: iso source */ 2350 retval = test_queue(dev, param, 2351 dev->in_iso_pipe, dev->iso_in, 0); 2352 break; 2353 2354 /* FIXME scatterlist cancel (needs helper thread) */ 2355 2356 /* Tests for bulk I/O using DMA mapping by core and odd address */ 2357 case 17: 2358 if (dev->out_pipe == 0) 2359 break; 2360 dev_info(&intf->dev, 2361 "TEST 17: write odd addr %d bytes %u times core map\n", 2362 param->length, param->iterations); 2363 2364 retval = test_unaligned_bulk( 2365 dev, dev->out_pipe, 2366 param->length, param->iterations, 2367 0, "test17"); 2368 break; 2369 2370 case 18: 2371 if (dev->in_pipe == 0) 2372 break; 2373 dev_info(&intf->dev, 2374 "TEST 18: read odd addr %d bytes %u times core map\n", 2375 param->length, param->iterations); 2376 2377 retval = test_unaligned_bulk( 2378 dev, dev->in_pipe, 2379 param->length, param->iterations, 2380 0, "test18"); 2381 break; 2382 2383 /* Tests for bulk I/O using premapped coherent buffer and odd address */ 2384 case 19: 2385 if (dev->out_pipe == 0) 2386 break; 2387 dev_info(&intf->dev, 2388 "TEST 19: write odd addr %d bytes %u times premapped\n", 2389 param->length, param->iterations); 2390 2391 retval = test_unaligned_bulk( 2392 dev, dev->out_pipe, 2393 param->length, param->iterations, 2394 URB_NO_TRANSFER_DMA_MAP, "test19"); 2395 break; 2396 2397 case 20: 2398 if (dev->in_pipe == 0) 2399 break; 2400 dev_info(&intf->dev, 2401 "TEST 20: read odd addr %d bytes %u times premapped\n", 2402 param->length, param->iterations); 2403 2404 retval = test_unaligned_bulk( 2405 dev, dev->in_pipe, 2406 param->length, param->iterations, 2407 URB_NO_TRANSFER_DMA_MAP, "test20"); 2408 break; 2409 2410 /* control write tests with unaligned buffer */ 2411 case 21: 2412 if (!dev->info->ctrl_out) 2413 break; 2414 dev_info(&intf->dev, 2415 "TEST 21: %d ep0out odd addr, %d..%d vary %d\n", 2416 param->iterations, 2417 realworld ? 1 : 0, param->length, 2418 param->vary); 2419 retval = ctrl_out(dev, param->iterations, 2420 param->length, param->vary, 1); 2421 break; 2422 2423 /* unaligned iso tests */ 2424 case 22: 2425 if (dev->out_iso_pipe == 0 || param->sglen == 0) 2426 break; 2427 dev_info(&intf->dev, 2428 "TEST 22: write %d iso odd, %d entries of %d bytes\n", 2429 param->iterations, 2430 param->sglen, param->length); 2431 retval = test_queue(dev, param, 2432 dev->out_iso_pipe, dev->iso_out, 1); 2433 break; 2434 2435 case 23: 2436 if (dev->in_iso_pipe == 0 || param->sglen == 0) 2437 break; 2438 dev_info(&intf->dev, 2439 "TEST 23: read %d iso odd, %d entries of %d bytes\n", 2440 param->iterations, 2441 param->sglen, param->length); 2442 retval = test_queue(dev, param, 2443 dev->in_iso_pipe, dev->iso_in, 1); 2444 break; 2445 2446 /* unlink URBs from a bulk-OUT queue */ 2447 case 24: 2448 if (dev->out_pipe == 0 || !param->length || param->sglen < 4) 2449 break; 2450 retval = 0; 2451 dev_info(&intf->dev, "TEST 24: unlink from %d queues of " 2452 "%d %d-byte writes\n", 2453 param->iterations, param->sglen, param->length); 2454 for (i = param->iterations; retval == 0 && i > 0; --i) { 2455 retval = unlink_queued(dev, dev->out_pipe, 2456 param->sglen, param->length); 2457 if (retval) { 2458 dev_err(&intf->dev, 2459 "unlink queued writes failed %d, " 2460 "iterations left %d\n", retval, i); 2461 break; 2462 } 2463 } 2464 break; 2465 2466 /* Simple non-queued interrupt I/O tests */ 2467 case 25: 2468 if (dev->out_int_pipe == 0) 2469 break; 2470 dev_info(&intf->dev, 2471 "TEST 25: write %d bytes %u times\n", 2472 param->length, param->iterations); 2473 urb = simple_alloc_urb(udev, dev->out_int_pipe, param->length, 2474 dev->int_out->bInterval); 2475 if (!urb) { 2476 retval = -ENOMEM; 2477 break; 2478 } 2479 /* FIRMWARE: interrupt sink (maybe accepts short writes) */ 2480 retval = simple_io(dev, urb, param->iterations, 0, 0, "test25"); 2481 simple_free_urb(urb); 2482 break; 2483 case 26: 2484 if (dev->in_int_pipe == 0) 2485 break; 2486 dev_info(&intf->dev, 2487 "TEST 26: read %d bytes %u times\n", 2488 param->length, param->iterations); 2489 urb = simple_alloc_urb(udev, dev->in_int_pipe, param->length, 2490 dev->int_in->bInterval); 2491 if (!urb) { 2492 retval = -ENOMEM; 2493 break; 2494 } 2495 /* FIRMWARE: interrupt source (maybe generates short writes) */ 2496 retval = simple_io(dev, urb, param->iterations, 0, 0, "test26"); 2497 simple_free_urb(urb); 2498 break; 2499 case 27: 2500 /* We do performance test, so ignore data compare */ 2501 if (dev->out_pipe == 0 || param->sglen == 0 || pattern != 0) 2502 break; 2503 dev_info(&intf->dev, 2504 "TEST 27: bulk write %dMbytes\n", (param->iterations * 2505 param->sglen * param->length) / (1024 * 1024)); 2506 retval = test_queue(dev, param, 2507 dev->out_pipe, NULL, 0); 2508 break; 2509 case 28: 2510 if (dev->in_pipe == 0 || param->sglen == 0 || pattern != 0) 2511 break; 2512 dev_info(&intf->dev, 2513 "TEST 28: bulk read %dMbytes\n", (param->iterations * 2514 param->sglen * param->length) / (1024 * 1024)); 2515 retval = test_queue(dev, param, 2516 dev->in_pipe, NULL, 0); 2517 break; 2518 } 2519 return retval; 2520 } 2521 2522 /*-------------------------------------------------------------------------*/ 2523 2524 /* We only have this one interface to user space, through usbfs. 2525 * User mode code can scan usbfs to find N different devices (maybe on 2526 * different busses) to use when testing, and allocate one thread per 2527 * test. So discovery is simplified, and we have no device naming issues. 2528 * 2529 * Don't use these only as stress/load tests. Use them along with with 2530 * other USB bus activity: plugging, unplugging, mousing, mp3 playback, 2531 * video capture, and so on. Run different tests at different times, in 2532 * different sequences. Nothing here should interact with other devices, 2533 * except indirectly by consuming USB bandwidth and CPU resources for test 2534 * threads and request completion. But the only way to know that for sure 2535 * is to test when HC queues are in use by many devices. 2536 * 2537 * WARNING: Because usbfs grabs udev->dev.sem before calling this ioctl(), 2538 * it locks out usbcore in certain code paths. Notably, if you disconnect 2539 * the device-under-test, hub_wq will wait block forever waiting for the 2540 * ioctl to complete ... so that usb_disconnect() can abort the pending 2541 * urbs and then call usbtest_disconnect(). To abort a test, you're best 2542 * off just killing the userspace task and waiting for it to exit. 2543 */ 2544 2545 static int 2546 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf) 2547 { 2548 2549 struct usbtest_dev *dev = usb_get_intfdata(intf); 2550 struct usbtest_param_64 *param_64 = buf; 2551 struct usbtest_param_32 temp; 2552 struct usbtest_param_32 *param_32 = buf; 2553 struct timespec64 start; 2554 struct timespec64 end; 2555 struct timespec64 duration; 2556 int retval = -EOPNOTSUPP; 2557 2558 /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */ 2559 2560 pattern = mod_pattern; 2561 2562 if (mutex_lock_interruptible(&dev->lock)) 2563 return -ERESTARTSYS; 2564 2565 /* FIXME: What if a system sleep starts while a test is running? */ 2566 2567 /* some devices, like ez-usb default devices, need a non-default 2568 * altsetting to have any active endpoints. some tests change 2569 * altsettings; force a default so most tests don't need to check. 2570 */ 2571 if (dev->info->alt >= 0) { 2572 if (intf->altsetting->desc.bInterfaceNumber) { 2573 retval = -ENODEV; 2574 goto free_mutex; 2575 } 2576 retval = set_altsetting(dev, dev->info->alt); 2577 if (retval) { 2578 dev_err(&intf->dev, 2579 "set altsetting to %d failed, %d\n", 2580 dev->info->alt, retval); 2581 goto free_mutex; 2582 } 2583 } 2584 2585 switch (code) { 2586 case USBTEST_REQUEST_64: 2587 temp.test_num = param_64->test_num; 2588 temp.iterations = param_64->iterations; 2589 temp.length = param_64->length; 2590 temp.sglen = param_64->sglen; 2591 temp.vary = param_64->vary; 2592 param_32 = &temp; 2593 break; 2594 2595 case USBTEST_REQUEST_32: 2596 break; 2597 2598 default: 2599 retval = -EOPNOTSUPP; 2600 goto free_mutex; 2601 } 2602 2603 ktime_get_ts64(&start); 2604 2605 retval = usbtest_do_ioctl(intf, param_32); 2606 if (retval < 0) 2607 goto free_mutex; 2608 2609 ktime_get_ts64(&end); 2610 2611 duration = timespec64_sub(end, start); 2612 2613 temp.duration_sec = duration.tv_sec; 2614 temp.duration_usec = duration.tv_nsec/NSEC_PER_USEC; 2615 2616 switch (code) { 2617 case USBTEST_REQUEST_32: 2618 param_32->duration_sec = temp.duration_sec; 2619 param_32->duration_usec = temp.duration_usec; 2620 break; 2621 2622 case USBTEST_REQUEST_64: 2623 param_64->duration_sec = temp.duration_sec; 2624 param_64->duration_usec = temp.duration_usec; 2625 break; 2626 } 2627 2628 free_mutex: 2629 mutex_unlock(&dev->lock); 2630 return retval; 2631 } 2632 2633 /*-------------------------------------------------------------------------*/ 2634 2635 static unsigned force_interrupt; 2636 module_param(force_interrupt, uint, 0); 2637 MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt"); 2638 2639 #ifdef GENERIC 2640 static unsigned short vendor; 2641 module_param(vendor, ushort, 0); 2642 MODULE_PARM_DESC(vendor, "vendor code (from usb-if)"); 2643 2644 static unsigned short product; 2645 module_param(product, ushort, 0); 2646 MODULE_PARM_DESC(product, "product code (from vendor)"); 2647 #endif 2648 2649 static int 2650 usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id) 2651 { 2652 struct usb_device *udev; 2653 struct usbtest_dev *dev; 2654 struct usbtest_info *info; 2655 char *rtest, *wtest; 2656 char *irtest, *iwtest; 2657 char *intrtest, *intwtest; 2658 2659 udev = interface_to_usbdev(intf); 2660 2661 #ifdef GENERIC 2662 /* specify devices by module parameters? */ 2663 if (id->match_flags == 0) { 2664 /* vendor match required, product match optional */ 2665 if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor) 2666 return -ENODEV; 2667 if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product) 2668 return -ENODEV; 2669 dev_info(&intf->dev, "matched module params, " 2670 "vend=0x%04x prod=0x%04x\n", 2671 le16_to_cpu(udev->descriptor.idVendor), 2672 le16_to_cpu(udev->descriptor.idProduct)); 2673 } 2674 #endif 2675 2676 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2677 if (!dev) 2678 return -ENOMEM; 2679 info = (struct usbtest_info *) id->driver_info; 2680 dev->info = info; 2681 mutex_init(&dev->lock); 2682 2683 dev->intf = intf; 2684 2685 /* cacheline-aligned scratch for i/o */ 2686 dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL); 2687 if (dev->buf == NULL) { 2688 kfree(dev); 2689 return -ENOMEM; 2690 } 2691 2692 /* NOTE this doesn't yet test the handful of difference that are 2693 * visible with high speed interrupts: bigger maxpacket (1K) and 2694 * "high bandwidth" modes (up to 3 packets/uframe). 2695 */ 2696 rtest = wtest = ""; 2697 irtest = iwtest = ""; 2698 intrtest = intwtest = ""; 2699 if (force_interrupt || udev->speed == USB_SPEED_LOW) { 2700 if (info->ep_in) { 2701 dev->in_pipe = usb_rcvintpipe(udev, info->ep_in); 2702 rtest = " intr-in"; 2703 } 2704 if (info->ep_out) { 2705 dev->out_pipe = usb_sndintpipe(udev, info->ep_out); 2706 wtest = " intr-out"; 2707 } 2708 } else { 2709 if (override_alt >= 0 || info->autoconf) { 2710 int status; 2711 2712 status = get_endpoints(dev, intf); 2713 if (status < 0) { 2714 WARNING(dev, "couldn't get endpoints, %d\n", 2715 status); 2716 kfree(dev->buf); 2717 kfree(dev); 2718 return status; 2719 } 2720 /* may find bulk or ISO pipes */ 2721 } else { 2722 if (info->ep_in) 2723 dev->in_pipe = usb_rcvbulkpipe(udev, 2724 info->ep_in); 2725 if (info->ep_out) 2726 dev->out_pipe = usb_sndbulkpipe(udev, 2727 info->ep_out); 2728 } 2729 if (dev->in_pipe) 2730 rtest = " bulk-in"; 2731 if (dev->out_pipe) 2732 wtest = " bulk-out"; 2733 if (dev->in_iso_pipe) 2734 irtest = " iso-in"; 2735 if (dev->out_iso_pipe) 2736 iwtest = " iso-out"; 2737 if (dev->in_int_pipe) 2738 intrtest = " int-in"; 2739 if (dev->out_int_pipe) 2740 intwtest = " int-out"; 2741 } 2742 2743 usb_set_intfdata(intf, dev); 2744 dev_info(&intf->dev, "%s\n", info->name); 2745 dev_info(&intf->dev, "%s {control%s%s%s%s%s%s%s} tests%s\n", 2746 usb_speed_string(udev->speed), 2747 info->ctrl_out ? " in/out" : "", 2748 rtest, wtest, 2749 irtest, iwtest, 2750 intrtest, intwtest, 2751 info->alt >= 0 ? " (+alt)" : ""); 2752 return 0; 2753 } 2754 2755 static int usbtest_suspend(struct usb_interface *intf, pm_message_t message) 2756 { 2757 return 0; 2758 } 2759 2760 static int usbtest_resume(struct usb_interface *intf) 2761 { 2762 return 0; 2763 } 2764 2765 2766 static void usbtest_disconnect(struct usb_interface *intf) 2767 { 2768 struct usbtest_dev *dev = usb_get_intfdata(intf); 2769 2770 usb_set_intfdata(intf, NULL); 2771 dev_dbg(&intf->dev, "disconnect\n"); 2772 kfree(dev); 2773 } 2774 2775 /* Basic testing only needs a device that can source or sink bulk traffic. 2776 * Any device can test control transfers (default with GENERIC binding). 2777 * 2778 * Several entries work with the default EP0 implementation that's built 2779 * into EZ-USB chips. There's a default vendor ID which can be overridden 2780 * by (very) small config EEPROMS, but otherwise all these devices act 2781 * identically until firmware is loaded: only EP0 works. It turns out 2782 * to be easy to make other endpoints work, without modifying that EP0 2783 * behavior. For now, we expect that kind of firmware. 2784 */ 2785 2786 /* an21xx or fx versions of ez-usb */ 2787 static struct usbtest_info ez1_info = { 2788 .name = "EZ-USB device", 2789 .ep_in = 2, 2790 .ep_out = 2, 2791 .alt = 1, 2792 }; 2793 2794 /* fx2 version of ez-usb */ 2795 static struct usbtest_info ez2_info = { 2796 .name = "FX2 device", 2797 .ep_in = 6, 2798 .ep_out = 2, 2799 .alt = 1, 2800 }; 2801 2802 /* ezusb family device with dedicated usb test firmware, 2803 */ 2804 static struct usbtest_info fw_info = { 2805 .name = "usb test device", 2806 .ep_in = 2, 2807 .ep_out = 2, 2808 .alt = 1, 2809 .autoconf = 1, /* iso and ctrl_out need autoconf */ 2810 .ctrl_out = 1, 2811 .iso = 1, /* iso_ep's are #8 in/out */ 2812 }; 2813 2814 /* peripheral running Linux and 'zero.c' test firmware, or 2815 * its user-mode cousin. different versions of this use 2816 * different hardware with the same vendor/product codes. 2817 * host side MUST rely on the endpoint descriptors. 2818 */ 2819 static struct usbtest_info gz_info = { 2820 .name = "Linux gadget zero", 2821 .autoconf = 1, 2822 .ctrl_out = 1, 2823 .iso = 1, 2824 .intr = 1, 2825 .alt = 0, 2826 }; 2827 2828 static struct usbtest_info um_info = { 2829 .name = "Linux user mode test driver", 2830 .autoconf = 1, 2831 .alt = -1, 2832 }; 2833 2834 static struct usbtest_info um2_info = { 2835 .name = "Linux user mode ISO test driver", 2836 .autoconf = 1, 2837 .iso = 1, 2838 .alt = -1, 2839 }; 2840 2841 #ifdef IBOT2 2842 /* this is a nice source of high speed bulk data; 2843 * uses an FX2, with firmware provided in the device 2844 */ 2845 static struct usbtest_info ibot2_info = { 2846 .name = "iBOT2 webcam", 2847 .ep_in = 2, 2848 .alt = -1, 2849 }; 2850 #endif 2851 2852 #ifdef GENERIC 2853 /* we can use any device to test control traffic */ 2854 static struct usbtest_info generic_info = { 2855 .name = "Generic USB device", 2856 .alt = -1, 2857 }; 2858 #endif 2859 2860 2861 static const struct usb_device_id id_table[] = { 2862 2863 /*-------------------------------------------------------------*/ 2864 2865 /* EZ-USB devices which download firmware to replace (or in our 2866 * case augment) the default device implementation. 2867 */ 2868 2869 /* generic EZ-USB FX controller */ 2870 { USB_DEVICE(0x0547, 0x2235), 2871 .driver_info = (unsigned long) &ez1_info, 2872 }, 2873 2874 /* CY3671 development board with EZ-USB FX */ 2875 { USB_DEVICE(0x0547, 0x0080), 2876 .driver_info = (unsigned long) &ez1_info, 2877 }, 2878 2879 /* generic EZ-USB FX2 controller (or development board) */ 2880 { USB_DEVICE(0x04b4, 0x8613), 2881 .driver_info = (unsigned long) &ez2_info, 2882 }, 2883 2884 /* re-enumerated usb test device firmware */ 2885 { USB_DEVICE(0xfff0, 0xfff0), 2886 .driver_info = (unsigned long) &fw_info, 2887 }, 2888 2889 /* "Gadget Zero" firmware runs under Linux */ 2890 { USB_DEVICE(0x0525, 0xa4a0), 2891 .driver_info = (unsigned long) &gz_info, 2892 }, 2893 2894 /* so does a user-mode variant */ 2895 { USB_DEVICE(0x0525, 0xa4a4), 2896 .driver_info = (unsigned long) &um_info, 2897 }, 2898 2899 /* ... and a user-mode variant that talks iso */ 2900 { USB_DEVICE(0x0525, 0xa4a3), 2901 .driver_info = (unsigned long) &um2_info, 2902 }, 2903 2904 #ifdef KEYSPAN_19Qi 2905 /* Keyspan 19qi uses an21xx (original EZ-USB) */ 2906 /* this does not coexist with the real Keyspan 19qi driver! */ 2907 { USB_DEVICE(0x06cd, 0x010b), 2908 .driver_info = (unsigned long) &ez1_info, 2909 }, 2910 #endif 2911 2912 /*-------------------------------------------------------------*/ 2913 2914 #ifdef IBOT2 2915 /* iBOT2 makes a nice source of high speed bulk-in data */ 2916 /* this does not coexist with a real iBOT2 driver! */ 2917 { USB_DEVICE(0x0b62, 0x0059), 2918 .driver_info = (unsigned long) &ibot2_info, 2919 }, 2920 #endif 2921 2922 /*-------------------------------------------------------------*/ 2923 2924 #ifdef GENERIC 2925 /* module params can specify devices to use for control tests */ 2926 { .driver_info = (unsigned long) &generic_info, }, 2927 #endif 2928 2929 /*-------------------------------------------------------------*/ 2930 2931 { } 2932 }; 2933 MODULE_DEVICE_TABLE(usb, id_table); 2934 2935 static struct usb_driver usbtest_driver = { 2936 .name = "usbtest", 2937 .id_table = id_table, 2938 .probe = usbtest_probe, 2939 .unlocked_ioctl = usbtest_ioctl, 2940 .disconnect = usbtest_disconnect, 2941 .suspend = usbtest_suspend, 2942 .resume = usbtest_resume, 2943 }; 2944 2945 /*-------------------------------------------------------------------------*/ 2946 2947 static int __init usbtest_init(void) 2948 { 2949 #ifdef GENERIC 2950 if (vendor) 2951 pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product); 2952 #endif 2953 return usb_register(&usbtest_driver); 2954 } 2955 module_init(usbtest_init); 2956 2957 static void __exit usbtest_exit(void) 2958 { 2959 usb_deregister(&usbtest_driver); 2960 } 2961 module_exit(usbtest_exit); 2962 2963 MODULE_DESCRIPTION("USB Core/HCD Testing Driver"); 2964 MODULE_LICENSE("GPL"); 2965 2966