Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 | /* -*- linux-c -*- */ /* * Driver for USB Scanners (linux-2.4.0test1-ac7) * * Copyright (C) 1999, 2000 David E. Nelson * * Portions may be copyright Brad Keryan and Michael Gee. * * David E. Nelson (dnelson@jump.net) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Originally based upon mouse.c (Brad Keryan) and printer.c (Michael Gee). * * History * * 0.1 8/31/1999 * * Developed/tested using linux-2.3.15 with minor ohci.c changes to * support short packes during bulk xfer mode. Some testing was * done with ohci-hcd but the performace was low. Very limited * testing was performed with uhci but I was unable to get it to * work. Initial relase to the linux-usb development effort. * * * 0.2 10/16/1999 * * - Device can't be opened unless a scanner is plugged into the USB. * - Finally settled on a reasonable value for the I/O buffer's. * - Cleaned up write_scanner() * - Disabled read/write stats * - A little more code cleanup * * * 0.3 10/18/1999 * * - Device registration changed to reflect new device * allocation/registration for linux-2.3.22+. * - Adopted David Brownell's <david-b@pacbell.net> technique for * assigning bulk endpoints. * - Removed unnessesary #include's * - Scanner model now reported via syslog INFO after being detected * *and* configured. * - Added user specified vendor:product USB ID's which can be passed * as module parameters. * * * 0.3.1 * * - Applied patches for linux-2.3.25. * - Error number reporting changed to reflect negative return codes. * * * 0.3.2 * * - Applied patches for linux-2.3.26 to scanner_init(). * - Debug read/write stats now report values as signed decimal. * * * 0.3.3 * * - Updated the bulk_msg() calls to usb usb_bulk_msg(). * - Added a small delay in the write_scanner() method to aid in * avoiding NULL data reads on HP scanners. We'll see how this works. * - Return values from usb_bulk_msg() now ignore positive values for * use with the ohci driver. * - Added conditional debugging instead of commenting/uncommenting * all over the place. * - kfree()'d the pointer after using usb_string() as documented in * linux-usb-api.txt. * - Added usb_set_configuration(). It got lost in version 0.3 -- ack! * - Added the HP 5200C USB Vendor/Product ID's. * * * 0.3.4 1/23/2000 * * - Added Greg K-H's <greg@kroah.com> patch for better handling of * Product/Vendor detection. * - The driver now autoconfigures its endpoints including interrupt * endpoints if one is detected. The concept was originally based * upon David Brownell's method. * - Added some Seiko/Epson ID's. Thanks to Karl Heinz * Kremer <khk@khk.net>. * - Added some preliminary ioctl() calls for the PV8630 which is used * by the HP4200. The ioctl()'s still have to be registered. Thanks * to Adrian Perez Jorge <adrianpj@easynews.com>. * - Moved/migrated stuff to scanner.h * - Removed the usb_set_configuration() since this is handled by * the usb_new_device() routine in usb.c. * - Added the HP 3300C. Thanks to Bruce Tenison. * - Changed user specified vendor/product id so that root hub doesn't * get falsely attached to. Thanks to Greg K-H. * - Added some Mustek ID's. Thanks to Gernot Hoyler * <Dr.Hoyler@t-online.de>. * - Modified the usb_string() reporting. See kfree() comment above. * - Added Umax Astra 2000U. Thanks to Doug Alcorn <doug@lathi.net>. * - Updated the printk()'s to use the info/warn/dbg macros. * - Updated usb_bulk_msg() argument types to fix gcc warnings. * * * 0.4 2/4/2000 * * - Removed usb_string() from probe_scanner since the core now does a * good job of reporting what was connnected. * - Finally, simultaneous multiple device attachment! * - Fixed some potential memory freeing issues should memory allocation * fail in probe_scanner(); * - Some fixes to disconnect_scanner(). * - Added interrupt endpoint support. * - Added Agfa SnapScan Touch. Thanks to Jan Van den Bergh * <jan.vandenbergh@cs.kuleuven.ac.be>. * - Added Umax 1220U ID's. Thanks to Maciek Klimkowski * <mac@nexus.carleton.ca>. * - Fixed bug in write_scanner(). The buffer was not being properly * updated for writes larger than OBUF_SIZE. Thanks to Henrik * Johansson <henrikjo@post.utfors.se> for identifying it. * - Added Microtek X6 ID's. Thanks to Oliver Neukum * <Oliver.Neukum@lrz.uni-muenchen.de>. * * * 0.4.1 2/15/2000 * * - Fixed 'count' bug in read_scanner(). Thanks to Henrik * Johansson <henrikjo@post.utfors.se> for identifying it. Amazing * it has worked this long. * - Fixed '>=' bug in both read/write_scanner methods. * - Cleaned up both read/write_scanner() methods so that they are * a little more readable. * - Added a lot of Microtek ID's. Thanks to Adrian Perez Jorge. * - Adopted the __initcall(). * - Added #include <linux/init.h> to scanner.h for __initcall(). * - Added one liner in irq_scanner() to keep gcc from complaining * about an unused variable (data) if debugging was disabled * in scanner.c. * - Increased the timeout parameter in read_scanner() to 120 Secs. * * * 0.4.2 3/23/2000 * * - Added Umax 1236U ID. Thanks to Philipp Baer <ph_baer@npw.net>. * - Added Primax, ReadyScan, Visioneer, Colorado, and Genius ID's. * Thanks to Adrian Perez Jorge <adrianpj@easynews.com>. * - Fixed error number reported for non-existant devices. Thanks to * Spyridon Papadimitriou <Spyridon_Papadimitriou@gs91.sp.cs.cmu.edu>. * - Added Acer Prisascan 620U ID's. Thanks to Joao <joey@knoware.nl>. * - Replaced __initcall() with module_init()/module_exit(). Updates * from patch-2.3.48. * - Replaced file_operations structure with new syntax. Updates * from patch-2.3.49. * - Changed #include "usb.h" to #include <linux/usb.h> * - Added #define SCN_IOCTL to exclude development areas * since 2.4.x is about to be released. This mainly affects the * ioctl() stuff. See scanner.h for more details. * - Changed the return value for signal_pending() from -ERESTARTSYS to * -EINTR. * * * 0.4.3 4/30/2000 * * - Added Umax Astra 2200 ID. Thanks to Flynn Marquardt * <flynn@isr.uni-stuttgart.de>. * - Added iVina 1200U ID. Thanks to Dyson Lin <dyson@avision.com.tw>. * - Added access time update for the device file courtesy of Paul * Mackerras <paulus@linuxcare.com>. This allows a user space daemon * to turn the lamp off for a Umax 1220U scanner after a prescribed * time. * - Fixed HP S20 ID's. Thanks to Ruud Linders <rlinders@xs4all.nl>. * - Added Acer ScanPrisa 620U ID. Thanks to Oliver * Schwartz <Oliver.Schwartz@gmx.de> via sane-devel mail list. * - Fixed bug in read_scanner for copy_to_user() function. The returned * value should be 'partial' not 'this_read'. * - Fixed bug in read_scanner. 'count' should be decremented * by 'this_read' and not by 'partial'. This resulted in twice as many * calls to read_scanner() for small amounts of data and possibly * unexpected returns of '0'. Thanks to Karl Heinz * Kremer <khk@khk.net> and Alain Knaff <Alain.Knaff@ltnb.lu> * for discovering this. * - Integrated Randy Dunlap's <randy.dunlap@intel.com> patch for a * scanner lookup/ident table. Thanks Randy. * - Documentation updates. * - Added wait queues to read_scanner(). * * * 0.4.3.1 * * - Fixed HP S20 ID's...again..sigh. Thanks to Ruud * Linders <rlinders@xs4all.nl>. * * * TODO * * - Performance * - Select/poll methods * - More testing * - Proper registry/assignment for LM9830 ioctl's * * * Thanks to: * * - All the folks on the linux-usb list who put up with me. :) This * has been a great learning experience for me. * - To Linus Torvalds for this great OS. * - The GNU folks. * - The folks that forwarded Vendor:Product ID's to me. * - Johannes Erdfelt for the loaning of a USB analyzer for tracking an * issue with HP-4100 and uhci. * - Adolfo Montero for his assistance. * - All the folks who chimed in with reports and suggestions. * - All the developers that are working on USB SANE backends or other * applications to use USB scanners. * * Performance: * * System: Pentium 120, 80 MB RAM, OHCI, Linux 2.3.23, HP 4100C USB Scanner * 300 dpi scan of the entire bed * 24 Bit Color ~ 70 secs - 3.6 Mbit/sec * 8 Bit Gray ~ 17 secs - 4.2 Mbit/sec */ /* * Scanner definitions, macros, module info, * debug/ioctl/data_dump enable, and other constants. */ #include "scanner.h" static void irq_scanner(struct urb *urb) { /* * For the meantime, this is just a placeholder until I figure out what * all I want to do with it -- or somebody else for that matter. */ struct scn_usb_data *scn = urb->context; unsigned char *data = &scn->button; data += 0; /* Keep gcc from complaining about unused var */ if (urb->status) { return; } dbg("irq_scanner(%d): data:%x", scn->scn_minor, *data); return; } static int open_scanner(struct inode * inode, struct file * file) { struct scn_usb_data *scn; struct usb_device *dev; kdev_t scn_minor; scn_minor = USB_SCN_MINOR(inode); dbg("open_scanner: scn_minor:%d", scn_minor); if (!p_scn_table[scn_minor]) { err("open_scanner(%d): Unable to access minor data", scn_minor); return -ENODEV; } scn = p_scn_table[scn_minor]; dev = scn->scn_dev; if (!dev) { err("open_scanner(%d): Scanner device not present", scn_minor); return -ENODEV; } if (!scn->present) { err("open_scanner(%d): Scanner is not present", scn_minor); return -ENODEV; } if (scn->isopen) { err("open_scanner(%d): Scanner device is already open", scn_minor); return -EBUSY; } init_waitqueue_head(&scn->rd_wait_q); scn->isopen = 1; file->private_data = scn; /* Used by the read and write metheds */ MOD_INC_USE_COUNT; return 0; } static int close_scanner(struct inode * inode, struct file * file) { struct scn_usb_data *scn; kdev_t scn_minor; scn_minor = USB_SCN_MINOR (inode); dbg("close_scanner: scn_minor:%d", scn_minor); if (!p_scn_table[scn_minor]) { err("close_scanner(%d): invalid scn_minor", scn_minor); return -ENODEV; } scn = p_scn_table[scn_minor]; scn->isopen = 0; file->private_data = NULL; MOD_DEC_USE_COUNT; return 0; } static ssize_t write_scanner(struct file * file, const char * buffer, size_t count, loff_t *ppos) { struct scn_usb_data *scn; struct usb_device *dev; ssize_t bytes_written = 0; /* Overall count of bytes written */ ssize_t ret = 0; kdev_t scn_minor; int this_write; /* Number of bytes to write */ int partial; /* Number of bytes successfully written */ int result = 0; char *obuf; scn = file->private_data; scn_minor = scn->scn_minor; obuf = scn->obuf; dev = scn->scn_dev; file->f_dentry->d_inode->i_atime = CURRENT_TIME; while (count > 0) { if (signal_pending(current)) { ret = -EINTR; break; } this_write = (count >= OBUF_SIZE) ? OBUF_SIZE : count; if (copy_from_user(scn->obuf, buffer, this_write)) { ret = -EFAULT; break; } result = usb_bulk_msg(dev,usb_sndbulkpipe(dev, scn->bulk_out_ep), obuf, this_write, &partial, 60*HZ); dbg("write stats(%d): result:%d this_write:%d partial:%d", scn_minor, result, this_write, partial); if (result == USB_ST_TIMEOUT) { /* NAK -- shouldn't happen */ warn("write_scanner: NAK recieved."); ret = -ETIME; break; } else if (result < 0) { /* We should not get any I/O errors */ warn("write_scanner(%d): funky result: %d. Please notify the maintainer.", scn_minor, result); ret = -EIO; break; } #ifdef WR_DATA_DUMP if (partial) { unsigned char cnt, cnt_max; cnt_max = (partial > 24) ? 24 : partial; printk(KERN_DEBUG "dump(%d): ", scn_minor); for (cnt=0; cnt < cnt_max; cnt++) { printk("%X ", obuf[cnt]); } printk("\n"); } #endif if (partial != this_write) { /* Unable to write all contents of obuf */ ret = -EIO; break; } if (partial) { /* Data written */ buffer += partial; count -= partial; bytes_written += partial; } else { /* No data written */ ret = 0; break; } } mdelay(5); /* This seems to help with SANE queries */ return ret ? ret : bytes_written; } static ssize_t read_scanner(struct file * file, char * buffer, size_t count, loff_t *ppos) { struct scn_usb_data *scn; struct usb_device *dev; ssize_t bytes_read; /* Overall count of bytes_read */ ssize_t ret; kdev_t scn_minor; int partial; /* Number of bytes successfully read */ int this_read; /* Max number of bytes to read */ int result; int rd_expire = RD_EXPIRE; char *ibuf; scn = file->private_data; scn_minor = scn->scn_minor; ibuf = scn->ibuf; dev = scn->scn_dev; bytes_read = 0; ret = 0; file->f_dentry->d_inode->i_atime = CURRENT_TIME; /* Update the atime of the device node */ while (count > 0) { if (signal_pending(current)) { ret = -EINTR; break; } this_read = (count >= IBUF_SIZE) ? IBUF_SIZE : count; result = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, scn->bulk_in_ep), ibuf, this_read, &partial, RD_NAK_TIMEOUT); dbg("read stats(%d): result:%d this_read:%d partial:%d count:%d", scn_minor, result, this_read, partial, count); /* * Scanners are sometimes inheriently slow since they are mechanical * in nature. USB bulk reads tend to timeout while the scanner is * positioning, resetting, warming up the lamp, etc if the timeout is * set too low. A very long timeout parameter for bulk reads was used * to overcome this limitation, but this sometimes resulted in folks * having to wait for the timeout to expire after pressing Ctrl-C from * an application. The user was sometimes left with the impression * that something had hung or crashed when in fact the USB read was * just waiting on data. So, the below code retains the same long * timeout period, but splits it up into smaller parts so that * Ctrl-C's are acted upon in a reasonable amount of time. */ if (result == USB_ST_TIMEOUT && !partial) { /* Timeout and no data */ if (--rd_expire <= 0) { warn("read_scanner(%d): excessive NAK's received", scn_minor); ret = -ETIME; break; } else { interruptible_sleep_on_timeout(&scn->rd_wait_q, RD_NAK_TIMEOUT); continue; } } else if ((result < 0) && (result != USB_ST_DATAUNDERRUN)) { warn("read_scanner(%d): funky result:%d. Please notify the maintainer.", scn_minor, (int)result); ret = -EIO; break; } #ifdef RD_DATA_DUMP if (partial) { unsigned char cnt, cnt_max; cnt_max = (partial > 24) ? 24 : partial; printk(KERN_DEBUG "dump(%d): ", scn_minor); for (cnt=0; cnt < cnt_max; cnt++) { printk("%X ", ibuf[cnt]); } printk("\n"); } #endif if (partial) { /* Data returned */ if (copy_to_user(buffer, ibuf, partial)) { ret = -EFAULT; break; } count -= this_read; /* Compensate for short reads */ bytes_read += partial; /* Keep tally of what actually was read */ buffer += partial; } else { ret = 0; break; } } return ret ? ret : bytes_read; } static void * probe_scanner(struct usb_device *dev, unsigned int ifnum) { struct scn_usb_data *scn; struct usb_interface_descriptor *interface; struct usb_endpoint_descriptor *endpoint; int ep_cnt; int ix; kdev_t scn_minor; char valid_device = 0; char have_bulk_in, have_bulk_out, have_intr; if (vendor != -1 && product != -1) { info("probe_scanner: User specified USB scanner -- Vendor:Product - %x:%x", vendor, product); } dbg("probe_scanner: USB dev address:%p", dev); dbg("probe_scanner: ifnum:%u", ifnum); /* * 1. Check Vendor/Product * 2. Determine/Assign Bulk Endpoints * 3. Determine/Assign Intr Endpoint */ /* * There doesn't seem to be an imaging class defined in the USB * Spec. (yet). If there is, HP isn't following it and it doesn't * look like anybody else is either. Therefore, we have to test the * Vendor and Product ID's to see what we have. Also, other scanners * may be able to use this driver by specifying both vendor and * product ID's as options to the scanner module in conf.modules. * * NOTE: Just because a product is supported here does not mean that * applications exist that support the product. It's in the hopes * that this will allow developers a means to produce applications * that will support USB products. * * Until we detect a device which is pleasing, we silently punt. */ for (ix = 0; ix < sizeof (scanner_device_ids) / sizeof (struct scanner_device); ix++) { if ((dev->descriptor.idVendor == scanner_device_ids [ix].idVendor) && (dev->descriptor.idProduct == scanner_device_ids [ix].idProduct)) { valid_device = 1; break; } } if (dev->descriptor.idVendor == vendor && /* User specified */ dev->descriptor.idProduct == product) { /* User specified */ valid_device = 1; } if (!valid_device) return NULL; /* We didn't find anything pleasing */ /* * After this point we can be a little noisy about what we are trying to * configure. */ if (dev->descriptor.bNumConfigurations != 1) { info("probe_scanner: Only one device configuration is supported."); return NULL; } if (dev->config[0].bNumInterfaces != 1) { info("probe_scanner: Only one device interface is supported."); return NULL; } interface = dev->config[0].interface[ifnum].altsetting; endpoint = interface[ifnum].endpoint; /* * Start checking for two bulk endpoints OR two bulk endpoints *and* one * interrupt endpoint. If we have an interrupt endpoint go ahead and * setup the handler. FIXME: This is a future enhancement... */ dbg("probe_scanner: Number of Endpoints:%d", (int) interface->bNumEndpoints); if ((interface->bNumEndpoints != 2) && (interface->bNumEndpoints != 3)) { info("probe_scanner: Only two or three endpoints supported."); return NULL; } ep_cnt = have_bulk_in = have_bulk_out = have_intr = 0; while (ep_cnt < interface->bNumEndpoints) { if (!have_bulk_in && IS_EP_BULK_IN(endpoint[ep_cnt])) { ep_cnt++; have_bulk_in = ep_cnt; dbg("probe_scanner: bulk_in_ep:%d", have_bulk_in); continue; } if (!have_bulk_out && IS_EP_BULK_OUT(endpoint[ep_cnt])) { ep_cnt++; have_bulk_out = ep_cnt; dbg("probe_scanner: bulk_out_ep:%d", have_bulk_out); continue; } if (!have_intr && IS_EP_INTR(endpoint[ep_cnt])) { ep_cnt++; have_intr = ep_cnt; dbg("probe_scanner: intr_ep:%d", have_intr); continue; } info("probe_scanner: Undetected endpoint. Notify the maintainer."); return NULL; /* Shouldn't ever get here unless we have something weird */ } /* * Perform a quick check to make sure that everything worked as it * should have. */ switch(interface->bNumEndpoints) { case 2: if (!have_bulk_in || !have_bulk_out) { info("probe_scanner: Two bulk endpoints required."); return NULL; } break; case 3: if (!have_bulk_in || !have_bulk_out || !have_intr) { info("probe_scanner: Two bulk endpoints and one interrupt endpoint required."); return NULL; } break; default: info("probe_scanner: Endpoint determination failed. Notify the maintainer."); return NULL; } /* * Determine a minor number and initialize the structure associated * with it. The problem with this is that we are counting on the fact * that the user will sequentially add device nodes for the scanner * devices. */ for (scn_minor = 0; scn_minor < SCN_MAX_MNR; scn_minor++) { if (!p_scn_table[scn_minor]) break; } /* Check to make sure that the last slot isn't already taken */ if (p_scn_table[scn_minor]) { err("probe_scanner: No more minor devices remaining."); return NULL; } dbg("probe_scanner: Allocated minor:%d", scn_minor); if (!(scn = kmalloc (sizeof (struct scn_usb_data), GFP_KERNEL))) { err("probe_scanner: Out of memory."); return NULL; } memset (scn, 0, sizeof(struct scn_usb_data)); dbg ("probe_scanner(%d): Address of scn:%p", scn_minor, scn); /* Ok, if we detected an interrupt EP, setup a handler for it */ if (have_intr) { dbg("probe_scanner(%d): Configuring IRQ handler for intr EP:%d", scn_minor, have_intr); FILL_INT_URB(&scn->scn_irq, dev, usb_rcvintpipe(dev, have_intr), &scn->button, 1, irq_scanner, scn, // endpoint[(int)have_intr].bInterval); 250); if (usb_submit_urb(&scn->scn_irq)) { err("probe_scanner(%d): Unable to allocate INT URB.", scn_minor); kfree(scn); return NULL; } } /* Ok, now initialize all the relevant values */ if (!(scn->obuf = (char *)kmalloc(OBUF_SIZE, GFP_KERNEL))) { err("probe_scanner(%d): Not enough memory for the output buffer.", scn_minor); kfree(scn); return NULL; } dbg("probe_scanner(%d): obuf address:%p", scn_minor, scn->obuf); if (!(scn->ibuf = (char *)kmalloc(IBUF_SIZE, GFP_KERNEL))) { err("probe_scanner(%d): Not enough memory for the input buffer.", scn_minor); kfree(scn->obuf); kfree(scn); return NULL; } dbg("probe_scanner(%d): ibuf address:%p", scn_minor, scn->ibuf); scn->bulk_in_ep = have_bulk_in; scn->bulk_out_ep = have_bulk_out; scn->intr_ep = have_intr; scn->present = 1; scn->scn_dev = dev; scn->scn_minor = scn_minor; scn->isopen = 0; return p_scn_table[scn_minor] = scn; } static void disconnect_scanner(struct usb_device *dev, void *ptr) { struct scn_usb_data *scn = (struct scn_usb_data *) ptr; if(scn->intr_ep) { dbg("disconnect_scanner(%d): Unlinking IRQ URB", scn->scn_minor); usb_unlink_urb(&scn->scn_irq); } usb_driver_release_interface(&scanner_driver, &scn->scn_dev->actconfig->interface[scn->ifnum]); kfree(scn->ibuf); kfree(scn->obuf); dbg("disconnect_scanner: De-allocating minor:%d", scn->scn_minor); p_scn_table[scn->scn_minor] = NULL; kfree (scn); } #ifdef SCN_IOCTL static int ioctl_scanner(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct usb_device *dev; int result; kdev_t scn_minor; scn_minor = USB_SCN_MINOR(inode); if (!p_scn_table[scn_minor]) { err("ioctl_scanner(%d): invalid scn_minor", scn_minor); return -ENODEV; } dev = p_scn_table[scn_minor]->scn_dev; switch (cmd) { case PV8630_IOCTL_INREQUEST : { struct { __u8 data; __u8 request; __u16 value; __u16 index; } args; if (copy_from_user(&args, (void *)arg, sizeof(args))) return -EFAULT; result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), args.request, USB_TYPE_VENDOR| USB_RECIP_DEVICE|USB_DIR_IN, args.value, args.index, &args.data, 1, HZ*5); dbg("ioctl_scanner(%d): inreq: args.data:%x args.value:%x args.index:%x args.request:%x\n", scn_minor, args.data, args.value, args.index, args.request); if (copy_to_user((void *)arg, &args, sizeof(args))) return -EFAULT; dbg("ioctl_scanner(%d): inreq: result:%d\n", scn_minor, result); return result; } case PV8630_IOCTL_OUTREQUEST : { struct { __u8 request; __u16 value; __u16 index; } args; if (copy_from_user(&args, (void *)arg, sizeof(args))) return -EFAULT; dbg("ioctl_scanner(%d): outreq: args.value:%x args.index:%x args.request:%x\n", scn_minor, args.value, args.index, args.request); result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), args.request, USB_TYPE_VENDOR| USB_RECIP_DEVICE|USB_DIR_OUT, args.value, args.index, NULL, 0, HZ*5); dbg("ioctl_scanner(%d): outreq: result:%d\n", scn_minor, result); return result; } default: return -ENOIOCTLCMD; } return 0; } #endif /* SCN_IOCTL */ static struct file_operations usb_scanner_fops = { read: read_scanner, write: write_scanner, #ifdef SCN_IOCTL ioctl: ioctl_scanner, #endif /* SCN_IOCTL */ open: open_scanner, release: close_scanner, }; static struct usb_driver scanner_driver = { "usbscanner", probe_scanner, disconnect_scanner, { NULL, NULL }, &usb_scanner_fops, SCN_BASE_MNR }; void __exit usb_scanner_exit(void) { usb_deregister(&scanner_driver); } int __init usb_scanner_init (void) { if (usb_register(&scanner_driver) < 0) return -1; info("USB Scanner support registered."); return 0; } module_init(usb_scanner_init); module_exit(usb_scanner_exit); |