1#include <sys/cdefs.h> 2__FBSDID("$FreeBSD$"); 3 4/* $NetBSD: ulpt.c,v 1.60 2003/10/04 21:19:50 augustss Exp $ */ 5 6/*- 7 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 8 * 9 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 10 * All rights reserved. 11 * 12 * This code is derived from software contributed to The NetBSD Foundation 13 * by Lennart Augustsson (lennart@augustsson.net) at 14 * Carlstedt Research & Technology. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * Printer Class spec: http://www.usb.org/developers/data/devclass/usbprint109.PDF 40 * Printer Class spec: http://www.usb.org/developers/devclass_docs/usbprint11.pdf 41 */ 42 43#include <sys/stdint.h> 44#include <sys/stddef.h> 45#include <sys/param.h> 46#include <sys/queue.h> 47#include <sys/types.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/bus.h> 51#include <sys/module.h> 52#include <sys/lock.h> 53#include <sys/mutex.h> 54#include <sys/condvar.h> 55#include <sys/sysctl.h> 56#include <sys/sx.h> 57#include <sys/unistd.h> 58#include <sys/callout.h> 59#include <sys/malloc.h> 60#include <sys/priv.h> 61#include <sys/syslog.h> 62#include <sys/selinfo.h> 63#include <sys/conf.h> 64#include <sys/fcntl.h> 65 66#include <dev/usb/usb.h> 67#include <dev/usb/usbdi.h> 68#include <dev/usb/usbdi_util.h> 69#include <dev/usb/usbhid.h> 70#include "usbdevs.h" 71 72#define USB_DEBUG_VAR ulpt_debug 73#include <dev/usb/usb_debug.h> 74#include <dev/usb/usb_process.h> 75 76#ifdef USB_DEBUG 77static int ulpt_debug = 0; 78 79static SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 80 "USB ulpt"); 81SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RWTUN, 82 &ulpt_debug, 0, "Debug level"); 83#endif 84 85#define ULPT_BSIZE (1<<15) /* bytes */ 86#define ULPT_IFQ_MAXLEN 2 /* units */ 87 88#define UR_GET_DEVICE_ID 0x00 89#define UR_GET_PORT_STATUS 0x01 90#define UR_SOFT_RESET 0x02 91 92#define LPS_NERR 0x08 /* printer no error */ 93#define LPS_SELECT 0x10 /* printer selected */ 94#define LPS_NOPAPER 0x20 /* printer out of paper */ 95#define LPS_INVERT (LPS_SELECT|LPS_NERR) 96#define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER) 97 98enum { 99 ULPT_BULK_DT_WR, 100 ULPT_BULK_DT_RD, 101 ULPT_INTR_DT_RD, 102 ULPT_N_TRANSFER, 103}; 104 105struct ulpt_softc { 106 struct usb_fifo_sc sc_fifo; 107 struct usb_fifo_sc sc_fifo_noreset; 108 struct mtx sc_mtx; 109 struct usb_callout sc_watchdog; 110 111 device_t sc_dev; 112 struct usb_device *sc_udev; 113 struct usb_fifo *sc_fifo_open[2]; 114 struct usb_xfer *sc_xfer[ULPT_N_TRANSFER]; 115 116 int sc_fflags; /* current open flags, FREAD and 117 * FWRITE */ 118 uint8_t sc_iface_no; 119 uint8_t sc_last_status; 120 uint8_t sc_zlps; /* number of consequtive zero length 121 * packets received */ 122}; 123 124/* prototypes */ 125 126static device_probe_t ulpt_probe; 127static device_attach_t ulpt_attach; 128static device_detach_t ulpt_detach; 129 130static usb_callback_t ulpt_write_callback; 131static usb_callback_t ulpt_read_callback; 132static usb_callback_t ulpt_status_callback; 133 134static void ulpt_reset(struct ulpt_softc *); 135static void ulpt_watchdog(void *); 136 137static usb_fifo_close_t ulpt_close; 138static usb_fifo_cmd_t ulpt_start_read; 139static usb_fifo_cmd_t ulpt_start_write; 140static usb_fifo_cmd_t ulpt_stop_read; 141static usb_fifo_cmd_t ulpt_stop_write; 142static usb_fifo_ioctl_t ulpt_ioctl; 143static usb_fifo_open_t ulpt_open; 144static usb_fifo_open_t unlpt_open; 145 146static struct usb_fifo_methods ulpt_fifo_methods = { 147 .f_close = &ulpt_close, 148 .f_ioctl = &ulpt_ioctl, 149 .f_open = &ulpt_open, 150 .f_start_read = &ulpt_start_read, 151 .f_start_write = &ulpt_start_write, 152 .f_stop_read = &ulpt_stop_read, 153 .f_stop_write = &ulpt_stop_write, 154 .basename[0] = "ulpt", 155}; 156 157static struct usb_fifo_methods unlpt_fifo_methods = { 158 .f_close = &ulpt_close, 159 .f_ioctl = &ulpt_ioctl, 160 .f_open = &unlpt_open, 161 .f_start_read = &ulpt_start_read, 162 .f_start_write = &ulpt_start_write, 163 .f_stop_read = &ulpt_stop_read, 164 .f_stop_write = &ulpt_stop_write, 165 .basename[0] = "unlpt", 166}; 167 168static void 169ulpt_reset(struct ulpt_softc *sc) 170{ 171 struct usb_device_request req; 172 173 DPRINTFN(2, "\n"); 174 175 req.bRequest = UR_SOFT_RESET; 176 USETW(req.wValue, 0); 177 USETW(req.wIndex, sc->sc_iface_no); 178 USETW(req.wLength, 0); 179 180 /* 181 * There was a mistake in the USB printer 1.0 spec that gave the 182 * request type as UT_WRITE_CLASS_OTHER; it should have been 183 * UT_WRITE_CLASS_INTERFACE. Many printers use the old one, 184 * so we try both. 185 */ 186 187 mtx_lock(&sc->sc_mtx); 188 req.bmRequestType = UT_WRITE_CLASS_OTHER; 189 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 190 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.0 */ 191 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 192 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 193 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.1 */ 194 /* ignore error */ 195 } 196 } 197 mtx_unlock(&sc->sc_mtx); 198} 199 200static void 201ulpt_write_callback(struct usb_xfer *xfer, usb_error_t error) 202{ 203 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 204 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_TX]; 205 struct usb_page_cache *pc; 206 int actlen, max; 207 208 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 209 210 if (f == NULL) { 211 /* should not happen */ 212 DPRINTF("no FIFO\n"); 213 return; 214 } 215 DPRINTF("state=0x%x actlen=%d\n", USB_GET_STATE(xfer), actlen); 216 217 switch (USB_GET_STATE(xfer)) { 218 case USB_ST_TRANSFERRED: 219 case USB_ST_SETUP: 220tr_setup: 221 pc = usbd_xfer_get_frame(xfer, 0); 222 max = usbd_xfer_max_len(xfer); 223 if (usb_fifo_get_data(f, pc, 0, max, &actlen, 0)) { 224 usbd_xfer_set_frame_len(xfer, 0, actlen); 225 usbd_transfer_submit(xfer); 226 } 227 break; 228 229 default: /* Error */ 230 if (error != USB_ERR_CANCELLED) { 231 /* try to clear stall first */ 232 usbd_xfer_set_stall(xfer); 233 goto tr_setup; 234 } 235 break; 236 } 237} 238 239static void 240ulpt_read_callback(struct usb_xfer *xfer, usb_error_t error) 241{ 242 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 243 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_RX]; 244 struct usb_page_cache *pc; 245 int actlen; 246 247 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 248 249 if (f == NULL) { 250 /* should not happen */ 251 DPRINTF("no FIFO\n"); 252 return; 253 } 254 DPRINTF("state=0x%x\n", USB_GET_STATE(xfer)); 255 256 switch (USB_GET_STATE(xfer)) { 257 case USB_ST_TRANSFERRED: 258 259 if (actlen == 0) { 260 if (sc->sc_zlps == 4) { 261 /* enable BULK throttle */ 262 usbd_xfer_set_interval(xfer, 500); /* ms */ 263 } else { 264 sc->sc_zlps++; 265 } 266 } else { 267 /* disable BULK throttle */ 268 269 usbd_xfer_set_interval(xfer, 0); 270 sc->sc_zlps = 0; 271 } 272 273 pc = usbd_xfer_get_frame(xfer, 0); 274 usb_fifo_put_data(f, pc, 0, actlen, 1); 275 276 case USB_ST_SETUP: 277tr_setup: 278 if (usb_fifo_put_bytes_max(f) != 0) { 279 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 280 usbd_transfer_submit(xfer); 281 } 282 break; 283 284 default: /* Error */ 285 /* disable BULK throttle */ 286 usbd_xfer_set_interval(xfer, 0); 287 sc->sc_zlps = 0; 288 289 if (error != USB_ERR_CANCELLED) { 290 /* try to clear stall first */ 291 usbd_xfer_set_stall(xfer); 292 goto tr_setup; 293 } 294 break; 295 } 296} 297 298static void 299ulpt_status_callback(struct usb_xfer *xfer, usb_error_t error) 300{ 301 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 302 struct usb_device_request req; 303 struct usb_page_cache *pc; 304 uint8_t cur_status; 305 uint8_t new_status; 306 307 switch (USB_GET_STATE(xfer)) { 308 case USB_ST_TRANSFERRED: 309 310 pc = usbd_xfer_get_frame(xfer, 1); 311 usbd_copy_out(pc, 0, &cur_status, 1); 312 313 cur_status = (cur_status ^ LPS_INVERT) & LPS_MASK; 314 new_status = cur_status & ~sc->sc_last_status; 315 sc->sc_last_status = cur_status; 316 317 if (new_status & LPS_SELECT) 318 log(LOG_NOTICE, "%s: offline\n", 319 device_get_nameunit(sc->sc_dev)); 320 else if (new_status & LPS_NOPAPER) 321 log(LOG_NOTICE, "%s: out of paper\n", 322 device_get_nameunit(sc->sc_dev)); 323 else if (new_status & LPS_NERR) 324 log(LOG_NOTICE, "%s: output error\n", 325 device_get_nameunit(sc->sc_dev)); 326 break; 327 328 case USB_ST_SETUP: 329 req.bmRequestType = UT_READ_CLASS_INTERFACE; 330 req.bRequest = UR_GET_PORT_STATUS; 331 USETW(req.wValue, 0); 332 req.wIndex[0] = sc->sc_iface_no; 333 req.wIndex[1] = 0; 334 USETW(req.wLength, 1); 335 336 pc = usbd_xfer_get_frame(xfer, 0); 337 usbd_copy_in(pc, 0, &req, sizeof(req)); 338 339 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 340 usbd_xfer_set_frame_len(xfer, 1, 1); 341 usbd_xfer_set_frames(xfer, 2); 342 usbd_transfer_submit(xfer); 343 break; 344 345 default: /* Error */ 346 DPRINTF("error=%s\n", usbd_errstr(error)); 347 if (error != USB_ERR_CANCELLED) { 348 /* wait for next watchdog timeout */ 349 } 350 break; 351 } 352} 353 354static const struct usb_config ulpt_config[ULPT_N_TRANSFER] = { 355 [ULPT_BULK_DT_WR] = { 356 .type = UE_BULK, 357 .endpoint = UE_ADDR_ANY, 358 .direction = UE_DIR_OUT, 359 .bufsize = ULPT_BSIZE, 360 .flags = {.pipe_bof = 1,.proxy_buffer = 1}, 361 .callback = &ulpt_write_callback, 362 }, 363 364 [ULPT_BULK_DT_RD] = { 365 .type = UE_BULK, 366 .endpoint = UE_ADDR_ANY, 367 .direction = UE_DIR_IN, 368 .bufsize = ULPT_BSIZE, 369 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1}, 370 .callback = &ulpt_read_callback, 371 }, 372 373 [ULPT_INTR_DT_RD] = { 374 .type = UE_CONTROL, 375 .endpoint = 0x00, /* Control pipe */ 376 .direction = UE_DIR_ANY, 377 .bufsize = sizeof(struct usb_device_request) + 1, 378 .callback = &ulpt_status_callback, 379 .timeout = 1000, /* 1 second */ 380 }, 381}; 382 383static void 384ulpt_start_read(struct usb_fifo *fifo) 385{ 386 struct ulpt_softc *sc = usb_fifo_softc(fifo); 387 388 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_RD]); 389} 390 391static void 392ulpt_stop_read(struct usb_fifo *fifo) 393{ 394 struct ulpt_softc *sc = usb_fifo_softc(fifo); 395 396 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_RD]); 397} 398 399static void 400ulpt_start_write(struct usb_fifo *fifo) 401{ 402 struct ulpt_softc *sc = usb_fifo_softc(fifo); 403 404 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_WR]); 405} 406 407static void 408ulpt_stop_write(struct usb_fifo *fifo) 409{ 410 struct ulpt_softc *sc = usb_fifo_softc(fifo); 411 412 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_WR]); 413} 414 415static int 416ulpt_open(struct usb_fifo *fifo, int fflags) 417{ 418 struct ulpt_softc *sc = usb_fifo_softc(fifo); 419 420 /* we assume that open is a serial process */ 421 422 if (sc->sc_fflags == 0) { 423 /* reset USB parallel port */ 424 425 ulpt_reset(sc); 426 } 427 return (unlpt_open(fifo, fflags)); 428} 429 430static int 431unlpt_open(struct usb_fifo *fifo, int fflags) 432{ 433 struct ulpt_softc *sc = usb_fifo_softc(fifo); 434 435 if (sc->sc_fflags & fflags) { 436 return (EBUSY); 437 } 438 if (fflags & FREAD) { 439 /* clear stall first */ 440 mtx_lock(&sc->sc_mtx); 441 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]); 442 mtx_unlock(&sc->sc_mtx); 443 if (usb_fifo_alloc_buffer(fifo, 444 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]), 445 ULPT_IFQ_MAXLEN)) { 446 return (ENOMEM); 447 } 448 /* set which FIFO is opened */ 449 sc->sc_fifo_open[USB_FIFO_RX] = fifo; 450 } 451 if (fflags & FWRITE) { 452 /* clear stall first */ 453 mtx_lock(&sc->sc_mtx); 454 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]); 455 mtx_unlock(&sc->sc_mtx); 456 if (usb_fifo_alloc_buffer(fifo, 457 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]), 458 ULPT_IFQ_MAXLEN)) { 459 return (ENOMEM); 460 } 461 /* set which FIFO is opened */ 462 sc->sc_fifo_open[USB_FIFO_TX] = fifo; 463 } 464 sc->sc_fflags |= fflags & (FREAD | FWRITE); 465 return (0); 466} 467 468static void 469ulpt_close(struct usb_fifo *fifo, int fflags) 470{ 471 struct ulpt_softc *sc = usb_fifo_softc(fifo); 472 473 sc->sc_fflags &= ~(fflags & (FREAD | FWRITE)); 474 475 if (fflags & (FREAD | FWRITE)) { 476 usb_fifo_free_buffer(fifo); 477 } 478} 479 480static int 481ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, 482 int fflags) 483{ 484 return (ENODEV); 485} 486 487static const STRUCT_USB_HOST_ID ulpt_devs[] = { 488 /* Uni-directional USB printer */ 489 {USB_IFACE_CLASS(UICLASS_PRINTER), 490 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 491 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)}, 492 493 /* Bi-directional USB printer */ 494 {USB_IFACE_CLASS(UICLASS_PRINTER), 495 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 496 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 497 498 /* 1284 USB printer */ 499 {USB_IFACE_CLASS(UICLASS_PRINTER), 500 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 501 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)}, 502}; 503 504static int 505ulpt_probe(device_t dev) 506{ 507 struct usb_attach_arg *uaa = device_get_ivars(dev); 508 int error; 509 510 DPRINTFN(11, "\n"); 511 512 if (uaa->usb_mode != USB_MODE_HOST) 513 return (ENXIO); 514 515 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); 516 if (error) 517 return (error); 518 519 return (BUS_PROBE_GENERIC); 520} 521 522static int 523ulpt_attach(device_t dev) 524{ 525 struct usb_attach_arg *uaa = device_get_ivars(dev); 526 struct ulpt_softc *sc = device_get_softc(dev); 527 struct usb_interface_descriptor *id; 528 int unit = device_get_unit(dev); 529 int error; 530 uint8_t iface_index = uaa->info.bIfaceIndex; 531 uint8_t alt_index; 532 533 DPRINTFN(11, "sc=%p\n", sc); 534 535 sc->sc_dev = dev; 536 sc->sc_udev = uaa->device; 537 538 device_set_usb_desc(dev); 539 540 mtx_init(&sc->sc_mtx, "ulpt lock", NULL, MTX_DEF | MTX_RECURSE); 541 542 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 543 544 /* search through all the descriptors looking for bidir mode */ 545 546 id = usbd_get_interface_descriptor(uaa->iface); 547 alt_index = 0xFF; 548 while (1) { 549 if (id == NULL) { 550 break; 551 } 552 if ((id->bDescriptorType == UDESC_INTERFACE) && 553 (id->bLength >= sizeof(*id))) { 554 if (id->bInterfaceNumber != uaa->info.bIfaceNum) { 555 break; 556 } else { 557 alt_index++; 558 if ((id->bInterfaceClass == UICLASS_PRINTER) && 559 (id->bInterfaceSubClass == UISUBCLASS_PRINTER) && 560 (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { 561 goto found; 562 } 563 } 564 } 565 id = (void *)usb_desc_foreach( 566 usbd_get_config_descriptor(uaa->device), (void *)id); 567 } 568 goto detach; 569 570found: 571 572 DPRINTF("setting alternate " 573 "config number: %d\n", alt_index); 574 575 if (alt_index) { 576 error = usbd_set_alt_interface_index 577 (uaa->device, iface_index, alt_index); 578 579 if (error) { 580 DPRINTF("could not set alternate " 581 "config, error=%s\n", usbd_errstr(error)); 582 goto detach; 583 } 584 } 585 sc->sc_iface_no = id->bInterfaceNumber; 586 587 error = usbd_transfer_setup(uaa->device, &iface_index, 588 sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, 589 sc, &sc->sc_mtx); 590 if (error) { 591 DPRINTF("error=%s\n", usbd_errstr(error)); 592 goto detach; 593 } 594 device_printf(sc->sc_dev, "using bi-directional mode\n"); 595 596#if 0 597/* 598 * This code is disabled because for some mysterious reason it causes 599 * printing not to work. But only sometimes, and mostly with 600 * UHCI and less often with OHCI. *sigh* 601 */ 602 { 603 struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); 604 struct usb_device_request req; 605 int len, alen; 606 607 req.bmRequestType = UT_READ_CLASS_INTERFACE; 608 req.bRequest = UR_GET_DEVICE_ID; 609 USETW(req.wValue, cd->bConfigurationValue); 610 USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); 611 USETW(req.wLength, sizeof devinfo - 1); 612 error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, 613 &alen, USB_DEFAULT_TIMEOUT); 614 if (error) { 615 device_printf(sc->sc_dev, "cannot get device id\n"); 616 } else if (alen <= 2) { 617 device_printf(sc->sc_dev, "empty device id, no " 618 "printer connected?\n"); 619 } else { 620 /* devinfo now contains an IEEE-1284 device ID */ 621 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); 622 if (len > sizeof devinfo - 3) 623 len = sizeof devinfo - 3; 624 devinfo[len] = 0; 625 printf("%s: device id <", device_get_nameunit(sc->sc_dev)); 626 ieee1284_print_id(devinfo + 2); 627 printf(">\n"); 628 } 629 } 630#endif 631 632 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 633 &ulpt_fifo_methods, &sc->sc_fifo, 634 unit, -1, uaa->info.bIfaceIndex, 635 UID_ROOT, GID_OPERATOR, 0644); 636 if (error) { 637 goto detach; 638 } 639 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 640 &unlpt_fifo_methods, &sc->sc_fifo_noreset, 641 unit, -1, uaa->info.bIfaceIndex, 642 UID_ROOT, GID_OPERATOR, 0644); 643 if (error) { 644 goto detach; 645 } 646 /* start reading of status */ 647 648 mtx_lock(&sc->sc_mtx); 649 ulpt_watchdog(sc); 650 mtx_unlock(&sc->sc_mtx); 651 return (0); 652 653detach: 654 ulpt_detach(dev); 655 return (ENOMEM); 656} 657 658static int 659ulpt_detach(device_t dev) 660{ 661 struct ulpt_softc *sc = device_get_softc(dev); 662 663 DPRINTF("sc=%p\n", sc); 664 665 usb_fifo_detach(&sc->sc_fifo); 666 usb_fifo_detach(&sc->sc_fifo_noreset); 667 668 mtx_lock(&sc->sc_mtx); 669 usb_callout_stop(&sc->sc_watchdog); 670 mtx_unlock(&sc->sc_mtx); 671 672 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); 673 usb_callout_drain(&sc->sc_watchdog); 674 mtx_destroy(&sc->sc_mtx); 675 676 return (0); 677} 678 679#if 0 680/* XXX This does not belong here. */ 681 682/* 683 * Compare two strings until the second ends. 684 */ 685 686static uint8_t 687ieee1284_compare(const char *a, const char *b) 688{ 689 while (1) { 690 if (*b == 0) { 691 break; 692 } 693 if (*a != *b) { 694 return 1; 695 } 696 b++; 697 a++; 698 } 699 return 0; 700} 701 702/* 703 * Print select parts of an IEEE 1284 device ID. 704 */ 705void 706ieee1284_print_id(char *str) 707{ 708 char *p, *q; 709 710 for (p = str - 1; p; p = strchr(p, ';')) { 711 p++; /* skip ';' */ 712 if (ieee1284_compare(p, "MFG:") == 0 || 713 ieee1284_compare(p, "MANUFACTURER:") == 0 || 714 ieee1284_compare(p, "MDL:") == 0 || 715 ieee1284_compare(p, "MODEL:") == 0) { 716 q = strchr(p, ';'); 717 if (q) 718 printf("%.*s", (int)(q - p + 1), p); 719 } 720 } 721} 722 723#endif 724 725static void 726ulpt_watchdog(void *arg) 727{ 728 struct ulpt_softc *sc = arg; 729 730 mtx_assert(&sc->sc_mtx, MA_OWNED); 731 732 /* 733 * Only read status while the device is not opened, due to 734 * possible hardware or firmware bug in some printers. 735 */ 736 if (sc->sc_fflags == 0) 737 usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); 738 739 usb_callout_reset(&sc->sc_watchdog, 740 hz, &ulpt_watchdog, sc); 741} 742 743static devclass_t ulpt_devclass; 744 745static device_method_t ulpt_methods[] = { 746 DEVMETHOD(device_probe, ulpt_probe), 747 DEVMETHOD(device_attach, ulpt_attach), 748 DEVMETHOD(device_detach, ulpt_detach), 749 DEVMETHOD_END 750}; 751 752static driver_t ulpt_driver = { 753 .name = "ulpt", 754 .methods = ulpt_methods, 755 .size = sizeof(struct ulpt_softc), 756}; 757 758DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, NULL, 0); 759MODULE_DEPEND(ulpt, usb, 1, 1, 1); 760MODULE_VERSION(ulpt, 1); 761USB_PNP_HOST_INFO(ulpt_devs); 762