1 /* $NetBSD: ulpt.c,v 1.60 2003/10/04 21:19:50 augustss Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart@augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Printer Class spec: http://www.usb.org/developers/data/devclass/usbprint109.PDF 35 * Printer Class spec: http://www.usb.org/developers/devclass_docs/usbprint11.pdf 36 */ 37 38 #include <sys/stdint.h> 39 #include <sys/param.h> 40 #include <sys/queue.h> 41 #include <sys/types.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/bus.h> 45 #include <sys/module.h> 46 #include <sys/lock.h> 47 #include <sys/condvar.h> 48 #include <sys/sysctl.h> 49 #include <sys/unistd.h> 50 #include <sys/callout.h> 51 #include <sys/malloc.h> 52 #include <sys/priv.h> 53 #include <sys/syslog.h> 54 #include <sys/conf.h> 55 #include <sys/fcntl.h> 56 57 #include <bus/u4b/usb.h> 58 #include <bus/u4b/usbdi.h> 59 #include <bus/u4b/usbdi_util.h> 60 #include <bus/u4b/usbhid.h> 61 #include "usbdevs.h" 62 63 #define USB_DEBUG_VAR ulpt_debug 64 #include <bus/u4b/usb_debug.h> 65 #include <bus/u4b/usb_process.h> 66 67 #ifdef USB_DEBUG 68 static int ulpt_debug = 0; 69 70 static SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW, 0, "USB ulpt"); 71 SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RW, 72 &ulpt_debug, 0, "Debug level"); 73 #endif 74 75 #define ULPT_BSIZE (1<<15) /* bytes */ 76 #define ULPT_IFQ_MAXLEN 2 /* units */ 77 78 #define UR_GET_DEVICE_ID 0x00 79 #define UR_GET_PORT_STATUS 0x01 80 #define UR_SOFT_RESET 0x02 81 82 #define LPS_NERR 0x08 /* printer no error */ 83 #define LPS_SELECT 0x10 /* printer selected */ 84 #define LPS_NOPAPER 0x20 /* printer out of paper */ 85 #define LPS_INVERT (LPS_SELECT|LPS_NERR) 86 #define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER) 87 88 enum { 89 ULPT_BULK_DT_WR, 90 ULPT_BULK_DT_RD, 91 ULPT_INTR_DT_RD, 92 ULPT_N_TRANSFER, 93 }; 94 95 struct ulpt_softc { 96 struct usb_fifo_sc sc_fifo; 97 struct usb_fifo_sc sc_fifo_noreset; 98 struct lock sc_lock; 99 struct usb_callout sc_watchdog; 100 101 device_t sc_dev; 102 struct usb_device *sc_udev; 103 struct usb_fifo *sc_fifo_open[2]; 104 struct usb_xfer *sc_xfer[ULPT_N_TRANSFER]; 105 106 int sc_fflags; /* current open flags, FREAD and 107 * FWRITE */ 108 uint8_t sc_iface_no; 109 uint8_t sc_last_status; 110 uint8_t sc_zlps; /* number of consequtive zero length 111 * packets received */ 112 }; 113 114 /* prototypes */ 115 116 static device_probe_t ulpt_probe; 117 static device_attach_t ulpt_attach; 118 static device_detach_t ulpt_detach; 119 120 static usb_callback_t ulpt_write_callback; 121 static usb_callback_t ulpt_read_callback; 122 static usb_callback_t ulpt_status_callback; 123 124 static void ulpt_reset(struct ulpt_softc *); 125 static void ulpt_watchdog(void *); 126 127 static usb_fifo_close_t ulpt_close; 128 static usb_fifo_cmd_t ulpt_start_read; 129 static usb_fifo_cmd_t ulpt_start_write; 130 static usb_fifo_cmd_t ulpt_stop_read; 131 static usb_fifo_cmd_t ulpt_stop_write; 132 static usb_fifo_ioctl_t ulpt_ioctl; 133 static usb_fifo_open_t ulpt_open; 134 static usb_fifo_open_t unlpt_open; 135 136 static struct usb_fifo_methods ulpt_fifo_methods = { 137 .f_close = &ulpt_close, 138 .f_ioctl = &ulpt_ioctl, 139 .f_open = &ulpt_open, 140 .f_start_read = &ulpt_start_read, 141 .f_start_write = &ulpt_start_write, 142 .f_stop_read = &ulpt_stop_read, 143 .f_stop_write = &ulpt_stop_write, 144 .basename[0] = "ulpt", 145 }; 146 147 static struct usb_fifo_methods unlpt_fifo_methods = { 148 .f_close = &ulpt_close, 149 .f_ioctl = &ulpt_ioctl, 150 .f_open = &unlpt_open, 151 .f_start_read = &ulpt_start_read, 152 .f_start_write = &ulpt_start_write, 153 .f_stop_read = &ulpt_stop_read, 154 .f_stop_write = &ulpt_stop_write, 155 .basename[0] = "unlpt", 156 }; 157 158 static void 159 ulpt_reset(struct ulpt_softc *sc) 160 { 161 struct usb_device_request req; 162 163 DPRINTFN(2, "\n"); 164 165 req.bRequest = UR_SOFT_RESET; 166 USETW(req.wValue, 0); 167 USETW(req.wIndex, sc->sc_iface_no); 168 USETW(req.wLength, 0); 169 170 /* 171 * There was a mistake in the USB printer 1.0 spec that gave the 172 * request type as UT_WRITE_CLASS_OTHER; it should have been 173 * UT_WRITE_CLASS_INTERFACE. Many printers use the old one, 174 * so we try both. 175 */ 176 177 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 178 req.bmRequestType = UT_WRITE_CLASS_OTHER; 179 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_lock, 180 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.0 */ 181 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 182 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_lock, 183 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.1 */ 184 /* ignore error */ 185 } 186 } 187 lockmgr(&sc->sc_lock, LK_RELEASE); 188 } 189 190 static void 191 ulpt_write_callback(struct usb_xfer *xfer, usb_error_t error) 192 { 193 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 194 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_TX]; 195 struct usb_page_cache *pc; 196 int actlen, max; 197 198 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 199 200 if (f == NULL) { 201 /* should not happen */ 202 DPRINTF("no FIFO\n"); 203 return; 204 } 205 DPRINTF("state=0x%x actlen=%d\n", USB_GET_STATE(xfer), actlen); 206 207 switch (USB_GET_STATE(xfer)) { 208 case USB_ST_TRANSFERRED: 209 case USB_ST_SETUP: 210 tr_setup: 211 pc = usbd_xfer_get_frame(xfer, 0); 212 max = usbd_xfer_max_len(xfer); 213 if (usb_fifo_get_data(f, pc, 0, max, &actlen, 0)) { 214 usbd_xfer_set_frame_len(xfer, 0, actlen); 215 usbd_transfer_submit(xfer); 216 } 217 break; 218 219 default: /* Error */ 220 if (error != USB_ERR_CANCELLED) { 221 /* try to clear stall first */ 222 usbd_xfer_set_stall(xfer); 223 goto tr_setup; 224 } 225 break; 226 } 227 } 228 229 static void 230 ulpt_read_callback(struct usb_xfer *xfer, usb_error_t error) 231 { 232 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 233 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_RX]; 234 struct usb_page_cache *pc; 235 int actlen; 236 237 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 238 239 if (f == NULL) { 240 /* should not happen */ 241 DPRINTF("no FIFO\n"); 242 return; 243 } 244 DPRINTF("state=0x%x\n", USB_GET_STATE(xfer)); 245 246 switch (USB_GET_STATE(xfer)) { 247 case USB_ST_TRANSFERRED: 248 249 if (actlen == 0) { 250 251 if (sc->sc_zlps == 4) { 252 /* enable BULK throttle */ 253 usbd_xfer_set_interval(xfer, 500); /* ms */ 254 } else { 255 sc->sc_zlps++; 256 } 257 } else { 258 /* disable BULK throttle */ 259 260 usbd_xfer_set_interval(xfer, 0); 261 sc->sc_zlps = 0; 262 } 263 264 pc = usbd_xfer_get_frame(xfer, 0); 265 usb_fifo_put_data(f, pc, 0, actlen, 1); 266 267 case USB_ST_SETUP: 268 tr_setup: 269 if (usb_fifo_put_bytes_max(f) != 0) { 270 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 271 usbd_transfer_submit(xfer); 272 } 273 break; 274 275 default: /* Error */ 276 /* disable BULK throttle */ 277 usbd_xfer_set_interval(xfer, 0); 278 sc->sc_zlps = 0; 279 280 if (error != USB_ERR_CANCELLED) { 281 /* try to clear stall first */ 282 usbd_xfer_set_stall(xfer); 283 goto tr_setup; 284 } 285 break; 286 } 287 } 288 289 static void 290 ulpt_status_callback(struct usb_xfer *xfer, usb_error_t error) 291 { 292 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 293 struct usb_device_request req; 294 struct usb_page_cache *pc; 295 uint8_t cur_status; 296 uint8_t new_status; 297 298 switch (USB_GET_STATE(xfer)) { 299 case USB_ST_TRANSFERRED: 300 301 pc = usbd_xfer_get_frame(xfer, 1); 302 usbd_copy_out(pc, 0, &cur_status, 1); 303 304 cur_status = (cur_status ^ LPS_INVERT) & LPS_MASK; 305 new_status = cur_status & ~sc->sc_last_status; 306 sc->sc_last_status = cur_status; 307 308 if (new_status & LPS_SELECT) 309 log(LOG_NOTICE, "%s: offline\n", 310 device_get_nameunit(sc->sc_dev)); 311 else if (new_status & LPS_NOPAPER) 312 log(LOG_NOTICE, "%s: out of paper\n", 313 device_get_nameunit(sc->sc_dev)); 314 else if (new_status & LPS_NERR) 315 log(LOG_NOTICE, "%s: output error\n", 316 device_get_nameunit(sc->sc_dev)); 317 break; 318 319 case USB_ST_SETUP: 320 req.bmRequestType = UT_READ_CLASS_INTERFACE; 321 req.bRequest = UR_GET_PORT_STATUS; 322 USETW(req.wValue, 0); 323 req.wIndex[0] = sc->sc_iface_no; 324 req.wIndex[1] = 0; 325 USETW(req.wLength, 1); 326 327 pc = usbd_xfer_get_frame(xfer, 0); 328 usbd_copy_in(pc, 0, &req, sizeof(req)); 329 330 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 331 usbd_xfer_set_frame_len(xfer, 1, 1); 332 usbd_xfer_set_frames(xfer, 2); 333 usbd_transfer_submit(xfer); 334 break; 335 336 default: /* Error */ 337 DPRINTF("error=%s\n", usbd_errstr(error)); 338 if (error != USB_ERR_CANCELLED) { 339 /* wait for next watchdog timeout */ 340 } 341 break; 342 } 343 } 344 345 static const struct usb_config ulpt_config[ULPT_N_TRANSFER] = { 346 [ULPT_BULK_DT_WR] = { 347 .type = UE_BULK, 348 .endpoint = UE_ADDR_ANY, 349 .direction = UE_DIR_OUT, 350 .bufsize = ULPT_BSIZE, 351 .flags = {.pipe_bof = 1,.proxy_buffer = 1}, 352 .callback = &ulpt_write_callback, 353 }, 354 355 [ULPT_BULK_DT_RD] = { 356 .type = UE_BULK, 357 .endpoint = UE_ADDR_ANY, 358 .direction = UE_DIR_IN, 359 .bufsize = ULPT_BSIZE, 360 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1}, 361 .callback = &ulpt_read_callback, 362 }, 363 364 [ULPT_INTR_DT_RD] = { 365 .type = UE_CONTROL, 366 .endpoint = 0x00, /* Control pipe */ 367 .direction = UE_DIR_ANY, 368 .bufsize = sizeof(struct usb_device_request) + 1, 369 .callback = &ulpt_status_callback, 370 .timeout = 1000, /* 1 second */ 371 }, 372 }; 373 374 static void 375 ulpt_start_read(struct usb_fifo *fifo) 376 { 377 struct ulpt_softc *sc = usb_fifo_softc(fifo); 378 379 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_RD]); 380 } 381 382 static void 383 ulpt_stop_read(struct usb_fifo *fifo) 384 { 385 struct ulpt_softc *sc = usb_fifo_softc(fifo); 386 387 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_RD]); 388 } 389 390 static void 391 ulpt_start_write(struct usb_fifo *fifo) 392 { 393 struct ulpt_softc *sc = usb_fifo_softc(fifo); 394 395 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_WR]); 396 } 397 398 static void 399 ulpt_stop_write(struct usb_fifo *fifo) 400 { 401 struct ulpt_softc *sc = usb_fifo_softc(fifo); 402 403 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_WR]); 404 } 405 406 static int 407 ulpt_open(struct usb_fifo *fifo, int fflags) 408 { 409 struct ulpt_softc *sc = usb_fifo_softc(fifo); 410 411 /* we assume that open is a serial process */ 412 413 if (sc->sc_fflags == 0) { 414 415 /* reset USB paralell port */ 416 417 ulpt_reset(sc); 418 } 419 return (unlpt_open(fifo, fflags)); 420 } 421 422 static int 423 unlpt_open(struct usb_fifo *fifo, int fflags) 424 { 425 struct ulpt_softc *sc = usb_fifo_softc(fifo); 426 427 if (sc->sc_fflags & fflags) { 428 return (EBUSY); 429 } 430 if (fflags & FREAD) { 431 /* clear stall first */ 432 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 433 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]); 434 lockmgr(&sc->sc_lock, LK_RELEASE); 435 if (usb_fifo_alloc_buffer(fifo, 436 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]), 437 ULPT_IFQ_MAXLEN)) { 438 return (ENOMEM); 439 } 440 /* set which FIFO is opened */ 441 sc->sc_fifo_open[USB_FIFO_RX] = fifo; 442 } 443 if (fflags & FWRITE) { 444 /* clear stall first */ 445 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 446 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]); 447 lockmgr(&sc->sc_lock, LK_RELEASE); 448 if (usb_fifo_alloc_buffer(fifo, 449 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]), 450 ULPT_IFQ_MAXLEN)) { 451 return (ENOMEM); 452 } 453 /* set which FIFO is opened */ 454 sc->sc_fifo_open[USB_FIFO_TX] = fifo; 455 } 456 sc->sc_fflags |= fflags & (FREAD | FWRITE); 457 return (0); 458 } 459 460 static void 461 ulpt_close(struct usb_fifo *fifo, int fflags) 462 { 463 struct ulpt_softc *sc = usb_fifo_softc(fifo); 464 465 sc->sc_fflags &= ~(fflags & (FREAD | FWRITE)); 466 467 if (fflags & (FREAD | FWRITE)) { 468 usb_fifo_free_buffer(fifo); 469 } 470 } 471 472 static int 473 ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, 474 int fflags) 475 { 476 return (ENODEV); 477 } 478 479 static const STRUCT_USB_HOST_ID ulpt_devs[] = { 480 /* Uni-directional USB printer */ 481 {USB_IFACE_CLASS(UICLASS_PRINTER), 482 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 483 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)}, 484 485 /* Bi-directional USB printer */ 486 {USB_IFACE_CLASS(UICLASS_PRINTER), 487 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 488 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 489 490 /* 1284 USB printer */ 491 {USB_IFACE_CLASS(UICLASS_PRINTER), 492 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 493 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)}, 494 }; 495 496 static int 497 ulpt_probe(device_t dev) 498 { 499 struct usb_attach_arg *uaa = device_get_ivars(dev); 500 int error; 501 502 DPRINTFN(11, "\n"); 503 504 if (uaa->usb_mode != USB_MODE_HOST) 505 return (ENXIO); 506 507 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); 508 if (error) 509 return (error); 510 511 return (BUS_PROBE_GENERIC); 512 } 513 514 static int 515 ulpt_attach(device_t dev) 516 { 517 struct usb_attach_arg *uaa = device_get_ivars(dev); 518 struct ulpt_softc *sc = device_get_softc(dev); 519 struct usb_interface_descriptor *id; 520 int unit = device_get_unit(dev); 521 int error; 522 uint8_t iface_index = uaa->info.bIfaceIndex; 523 uint8_t alt_index; 524 525 DPRINTFN(11, "sc=%p\n", sc); 526 527 sc->sc_dev = dev; 528 sc->sc_udev = uaa->device; 529 530 device_set_usb_desc(dev); 531 532 lockinit(&sc->sc_lock, "ulpt lock", 0, LK_CANRECURSE); 533 534 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_lock, 0); 535 536 /* search through all the descriptors looking for bidir mode */ 537 538 id = usbd_get_interface_descriptor(uaa->iface); 539 alt_index = 0 - 1; 540 while (1) { 541 if (id == NULL) { 542 break; 543 } 544 if ((id->bDescriptorType == UDESC_INTERFACE) && 545 (id->bLength >= sizeof(*id))) { 546 if (id->bInterfaceNumber != uaa->info.bIfaceNum) { 547 break; 548 } else { 549 alt_index++; 550 if ((id->bInterfaceClass == UICLASS_PRINTER) && 551 (id->bInterfaceSubClass == UISUBCLASS_PRINTER) && 552 (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { 553 goto found; 554 } 555 } 556 } 557 id = (void *)usb_desc_foreach( 558 usbd_get_config_descriptor(uaa->device), (void *)id); 559 } 560 goto detach; 561 562 found: 563 564 DPRINTF("setting alternate " 565 "config number: %d\n", alt_index); 566 567 if (alt_index) { 568 569 error = usbd_set_alt_interface_index 570 (uaa->device, iface_index, alt_index); 571 572 if (error) { 573 DPRINTF("could not set alternate " 574 "config, error=%s\n", usbd_errstr(error)); 575 goto detach; 576 } 577 } 578 sc->sc_iface_no = id->bInterfaceNumber; 579 580 error = usbd_transfer_setup(uaa->device, &iface_index, 581 sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, 582 sc, &sc->sc_lock); 583 if (error) { 584 DPRINTF("error=%s\n", usbd_errstr(error)); 585 goto detach; 586 } 587 device_printf(sc->sc_dev, "using bi-directional mode\n"); 588 589 #if 0 590 /* 591 * This code is disabled because for some mysterious reason it causes 592 * printing not to work. But only sometimes, and mostly with 593 * UHCI and less often with OHCI. *sigh* 594 */ 595 { 596 struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); 597 struct usb_device_request req; 598 int len, alen; 599 600 req.bmRequestType = UT_READ_CLASS_INTERFACE; 601 req.bRequest = UR_GET_DEVICE_ID; 602 USETW(req.wValue, cd->bConfigurationValue); 603 USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); 604 USETW(req.wLength, sizeof devinfo - 1); 605 error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, 606 &alen, USB_DEFAULT_TIMEOUT); 607 if (error) { 608 device_printf(sc->sc_dev, "cannot get device id\n"); 609 } else if (alen <= 2) { 610 device_printf(sc->sc_dev, "empty device id, no " 611 "printer connected?\n"); 612 } else { 613 /* devinfo now contains an IEEE-1284 device ID */ 614 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); 615 if (len > sizeof devinfo - 3) 616 len = sizeof devinfo - 3; 617 devinfo[len] = 0; 618 printf("%s: device id <", device_get_nameunit(sc->sc_dev)); 619 ieee1284_print_id(devinfo + 2); 620 printf(">\n"); 621 } 622 } 623 #endif 624 625 error = usb_fifo_attach(uaa->device, sc, &sc->sc_lock, 626 &ulpt_fifo_methods, &sc->sc_fifo, 627 unit, 0 - 1, uaa->info.bIfaceIndex, 628 UID_ROOT, GID_OPERATOR, 0644); 629 if (error) { 630 goto detach; 631 } 632 error = usb_fifo_attach(uaa->device, sc, &sc->sc_lock, 633 &unlpt_fifo_methods, &sc->sc_fifo_noreset, 634 unit, 0 - 1, uaa->info.bIfaceIndex, 635 UID_ROOT, GID_OPERATOR, 0644); 636 if (error) { 637 goto detach; 638 } 639 /* start reading of status */ 640 641 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 642 ulpt_watchdog(sc); 643 lockmgr(&sc->sc_lock, LK_RELEASE); 644 return (0); 645 646 detach: 647 ulpt_detach(dev); 648 return (ENOMEM); 649 } 650 651 static int 652 ulpt_detach(device_t dev) 653 { 654 struct ulpt_softc *sc = device_get_softc(dev); 655 656 DPRINTF("sc=%p\n", sc); 657 658 usb_fifo_detach(&sc->sc_fifo); 659 usb_fifo_detach(&sc->sc_fifo_noreset); 660 661 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 662 usb_callout_stop(&sc->sc_watchdog); 663 lockmgr(&sc->sc_lock, LK_RELEASE); 664 665 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); 666 usb_callout_drain(&sc->sc_watchdog); 667 lockuninit(&sc->sc_lock); 668 669 return (0); 670 } 671 672 #if 0 673 /* XXX This does not belong here. */ 674 675 /* 676 * Compare two strings until the second ends. 677 */ 678 679 static uint8_t 680 ieee1284_compare(const char *a, const char *b) 681 { 682 while (1) { 683 684 if (*b == 0) { 685 break; 686 } 687 if (*a != *b) { 688 return 1; 689 } 690 b++; 691 a++; 692 } 693 return 0; 694 } 695 696 /* 697 * Print select parts of an IEEE 1284 device ID. 698 */ 699 void 700 ieee1284_print_id(char *str) 701 { 702 char *p, *q; 703 704 for (p = str - 1; p; p = strchr(p, ';')) { 705 p++; /* skip ';' */ 706 if (ieee1284_compare(p, "MFG:") == 0 || 707 ieee1284_compare(p, "MANUFACTURER:") == 0 || 708 ieee1284_compare(p, "MDL:") == 0 || 709 ieee1284_compare(p, "MODEL:") == 0) { 710 q = strchr(p, ';'); 711 if (q) 712 printf("%.*s", (int)(q - p + 1), p); 713 } 714 } 715 } 716 717 #endif 718 719 static void 720 ulpt_watchdog(void *arg) 721 { 722 struct ulpt_softc *sc = arg; 723 724 KKASSERT(lockowned(&sc->sc_lock)); 725 726 /* 727 * Only read status while the device is not opened, due to 728 * possible hardware or firmware bug in some printers. 729 */ 730 if (sc->sc_fflags == 0) 731 usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); 732 733 usb_callout_reset(&sc->sc_watchdog, 734 hz, &ulpt_watchdog, sc); 735 } 736 737 static devclass_t ulpt_devclass; 738 739 static device_method_t ulpt_methods[] = { 740 DEVMETHOD(device_probe, ulpt_probe), 741 DEVMETHOD(device_attach, ulpt_attach), 742 DEVMETHOD(device_detach, ulpt_detach), 743 DEVMETHOD_END 744 }; 745 746 static driver_t ulpt_driver = { 747 .name = "ulpt", 748 .methods = ulpt_methods, 749 .size = sizeof(struct ulpt_softc), 750 }; 751 752 DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, NULL, NULL); 753 MODULE_DEPEND(ulpt, usb, 1, 1, 1); 754 MODULE_VERSION(ulpt, 1); 755