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 77 static int ulpt_debug = 0; 78 79 static SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 80 "USB ulpt"); 81 SYSCTL_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 98 enum { 99 ULPT_BULK_DT_WR, 100 ULPT_BULK_DT_RD, 101 ULPT_INTR_DT_RD, 102 ULPT_N_TRANSFER, 103 }; 104 105 struct 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 */ 125 126 static device_probe_t ulpt_probe; 127 static device_attach_t ulpt_attach; 128 static device_detach_t ulpt_detach; 129 130 static usb_callback_t ulpt_write_callback; 131 static usb_callback_t ulpt_read_callback; 132 static usb_callback_t ulpt_status_callback; 133 134 static void ulpt_reset(struct ulpt_softc *); 135 static void ulpt_watchdog(void *); 136 137 static usb_fifo_close_t ulpt_close; 138 static usb_fifo_cmd_t ulpt_start_read; 139 static usb_fifo_cmd_t ulpt_start_write; 140 static usb_fifo_cmd_t ulpt_stop_read; 141 static usb_fifo_cmd_t ulpt_stop_write; 142 static usb_fifo_ioctl_t ulpt_ioctl; 143 static usb_fifo_open_t ulpt_open; 144 static usb_fifo_open_t unlpt_open; 145 146 static 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 }; 156 157 static 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 }; 167 168 static void 169 ulpt_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 } 199 200 static void 201 ulpt_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: 220 tr_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 } 238 239 static void 240 ulpt_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) { 260 261 if (sc->sc_zlps == 4) { 262 /* enable BULK throttle */ 263 usbd_xfer_set_interval(xfer, 500); /* ms */ 264 } else { 265 sc->sc_zlps++; 266 } 267 } else { 268 /* disable BULK throttle */ 269 270 usbd_xfer_set_interval(xfer, 0); 271 sc->sc_zlps = 0; 272 } 273 274 pc = usbd_xfer_get_frame(xfer, 0); 275 usb_fifo_put_data(f, pc, 0, actlen, 1); 276 277 case USB_ST_SETUP: 278 tr_setup: 279 if (usb_fifo_put_bytes_max(f) != 0) { 280 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 281 usbd_transfer_submit(xfer); 282 } 283 break; 284 285 default: /* Error */ 286 /* disable BULK throttle */ 287 usbd_xfer_set_interval(xfer, 0); 288 sc->sc_zlps = 0; 289 290 if (error != USB_ERR_CANCELLED) { 291 /* try to clear stall first */ 292 usbd_xfer_set_stall(xfer); 293 goto tr_setup; 294 } 295 break; 296 } 297 } 298 299 static void 300 ulpt_status_callback(struct usb_xfer *xfer, usb_error_t error) 301 { 302 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 303 struct usb_device_request req; 304 struct usb_page_cache *pc; 305 uint8_t cur_status; 306 uint8_t new_status; 307 308 switch (USB_GET_STATE(xfer)) { 309 case USB_ST_TRANSFERRED: 310 311 pc = usbd_xfer_get_frame(xfer, 1); 312 usbd_copy_out(pc, 0, &cur_status, 1); 313 314 cur_status = (cur_status ^ LPS_INVERT) & LPS_MASK; 315 new_status = cur_status & ~sc->sc_last_status; 316 sc->sc_last_status = cur_status; 317 318 if (new_status & LPS_SELECT) 319 log(LOG_NOTICE, "%s: offline\n", 320 device_get_nameunit(sc->sc_dev)); 321 else if (new_status & LPS_NOPAPER) 322 log(LOG_NOTICE, "%s: out of paper\n", 323 device_get_nameunit(sc->sc_dev)); 324 else if (new_status & LPS_NERR) 325 log(LOG_NOTICE, "%s: output error\n", 326 device_get_nameunit(sc->sc_dev)); 327 break; 328 329 case USB_ST_SETUP: 330 req.bmRequestType = UT_READ_CLASS_INTERFACE; 331 req.bRequest = UR_GET_PORT_STATUS; 332 USETW(req.wValue, 0); 333 req.wIndex[0] = sc->sc_iface_no; 334 req.wIndex[1] = 0; 335 USETW(req.wLength, 1); 336 337 pc = usbd_xfer_get_frame(xfer, 0); 338 usbd_copy_in(pc, 0, &req, sizeof(req)); 339 340 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 341 usbd_xfer_set_frame_len(xfer, 1, 1); 342 usbd_xfer_set_frames(xfer, 2); 343 usbd_transfer_submit(xfer); 344 break; 345 346 default: /* Error */ 347 DPRINTF("error=%s\n", usbd_errstr(error)); 348 if (error != USB_ERR_CANCELLED) { 349 /* wait for next watchdog timeout */ 350 } 351 break; 352 } 353 } 354 355 static const struct usb_config ulpt_config[ULPT_N_TRANSFER] = { 356 [ULPT_BULK_DT_WR] = { 357 .type = UE_BULK, 358 .endpoint = UE_ADDR_ANY, 359 .direction = UE_DIR_OUT, 360 .bufsize = ULPT_BSIZE, 361 .flags = {.pipe_bof = 1,.proxy_buffer = 1}, 362 .callback = &ulpt_write_callback, 363 }, 364 365 [ULPT_BULK_DT_RD] = { 366 .type = UE_BULK, 367 .endpoint = UE_ADDR_ANY, 368 .direction = UE_DIR_IN, 369 .bufsize = ULPT_BSIZE, 370 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1}, 371 .callback = &ulpt_read_callback, 372 }, 373 374 [ULPT_INTR_DT_RD] = { 375 .type = UE_CONTROL, 376 .endpoint = 0x00, /* Control pipe */ 377 .direction = UE_DIR_ANY, 378 .bufsize = sizeof(struct usb_device_request) + 1, 379 .callback = &ulpt_status_callback, 380 .timeout = 1000, /* 1 second */ 381 }, 382 }; 383 384 static void 385 ulpt_start_read(struct usb_fifo *fifo) 386 { 387 struct ulpt_softc *sc = usb_fifo_softc(fifo); 388 389 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_RD]); 390 } 391 392 static void 393 ulpt_stop_read(struct usb_fifo *fifo) 394 { 395 struct ulpt_softc *sc = usb_fifo_softc(fifo); 396 397 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_RD]); 398 } 399 400 static void 401 ulpt_start_write(struct usb_fifo *fifo) 402 { 403 struct ulpt_softc *sc = usb_fifo_softc(fifo); 404 405 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_WR]); 406 } 407 408 static void 409 ulpt_stop_write(struct usb_fifo *fifo) 410 { 411 struct ulpt_softc *sc = usb_fifo_softc(fifo); 412 413 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_WR]); 414 } 415 416 static int 417 ulpt_open(struct usb_fifo *fifo, int fflags) 418 { 419 struct ulpt_softc *sc = usb_fifo_softc(fifo); 420 421 /* we assume that open is a serial process */ 422 423 if (sc->sc_fflags == 0) { 424 425 /* reset USB parallel port */ 426 427 ulpt_reset(sc); 428 } 429 return (unlpt_open(fifo, fflags)); 430 } 431 432 static int 433 unlpt_open(struct usb_fifo *fifo, int fflags) 434 { 435 struct ulpt_softc *sc = usb_fifo_softc(fifo); 436 437 if (sc->sc_fflags & fflags) { 438 return (EBUSY); 439 } 440 if (fflags & FREAD) { 441 /* clear stall first */ 442 mtx_lock(&sc->sc_mtx); 443 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]); 444 mtx_unlock(&sc->sc_mtx); 445 if (usb_fifo_alloc_buffer(fifo, 446 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]), 447 ULPT_IFQ_MAXLEN)) { 448 return (ENOMEM); 449 } 450 /* set which FIFO is opened */ 451 sc->sc_fifo_open[USB_FIFO_RX] = fifo; 452 } 453 if (fflags & FWRITE) { 454 /* clear stall first */ 455 mtx_lock(&sc->sc_mtx); 456 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]); 457 mtx_unlock(&sc->sc_mtx); 458 if (usb_fifo_alloc_buffer(fifo, 459 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]), 460 ULPT_IFQ_MAXLEN)) { 461 return (ENOMEM); 462 } 463 /* set which FIFO is opened */ 464 sc->sc_fifo_open[USB_FIFO_TX] = fifo; 465 } 466 sc->sc_fflags |= fflags & (FREAD | FWRITE); 467 return (0); 468 } 469 470 static void 471 ulpt_close(struct usb_fifo *fifo, int fflags) 472 { 473 struct ulpt_softc *sc = usb_fifo_softc(fifo); 474 475 sc->sc_fflags &= ~(fflags & (FREAD | FWRITE)); 476 477 if (fflags & (FREAD | FWRITE)) { 478 usb_fifo_free_buffer(fifo); 479 } 480 } 481 482 static int 483 ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, 484 int fflags) 485 { 486 return (ENODEV); 487 } 488 489 static const STRUCT_USB_HOST_ID ulpt_devs[] = { 490 /* Uni-directional USB printer */ 491 {USB_IFACE_CLASS(UICLASS_PRINTER), 492 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 493 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)}, 494 495 /* Bi-directional USB printer */ 496 {USB_IFACE_CLASS(UICLASS_PRINTER), 497 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 498 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 499 500 /* 1284 USB printer */ 501 {USB_IFACE_CLASS(UICLASS_PRINTER), 502 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 503 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)}, 504 }; 505 506 static int 507 ulpt_probe(device_t dev) 508 { 509 struct usb_attach_arg *uaa = device_get_ivars(dev); 510 int error; 511 512 DPRINTFN(11, "\n"); 513 514 if (uaa->usb_mode != USB_MODE_HOST) 515 return (ENXIO); 516 517 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); 518 if (error) 519 return (error); 520 521 return (BUS_PROBE_GENERIC); 522 } 523 524 static int 525 ulpt_attach(device_t dev) 526 { 527 struct usb_attach_arg *uaa = device_get_ivars(dev); 528 struct ulpt_softc *sc = device_get_softc(dev); 529 struct usb_interface_descriptor *id; 530 int unit = device_get_unit(dev); 531 int error; 532 uint8_t iface_index = uaa->info.bIfaceIndex; 533 uint8_t alt_index; 534 535 DPRINTFN(11, "sc=%p\n", sc); 536 537 sc->sc_dev = dev; 538 sc->sc_udev = uaa->device; 539 540 device_set_usb_desc(dev); 541 542 mtx_init(&sc->sc_mtx, "ulpt lock", NULL, MTX_DEF | MTX_RECURSE); 543 544 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 545 546 /* search through all the descriptors looking for bidir mode */ 547 548 id = usbd_get_interface_descriptor(uaa->iface); 549 alt_index = 0xFF; 550 while (1) { 551 if (id == NULL) { 552 break; 553 } 554 if ((id->bDescriptorType == UDESC_INTERFACE) && 555 (id->bLength >= sizeof(*id))) { 556 if (id->bInterfaceNumber != uaa->info.bIfaceNum) { 557 break; 558 } else { 559 alt_index++; 560 if ((id->bInterfaceClass == UICLASS_PRINTER) && 561 (id->bInterfaceSubClass == UISUBCLASS_PRINTER) && 562 (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { 563 goto found; 564 } 565 } 566 } 567 id = (void *)usb_desc_foreach( 568 usbd_get_config_descriptor(uaa->device), (void *)id); 569 } 570 goto detach; 571 572 found: 573 574 DPRINTF("setting alternate " 575 "config number: %d\n", alt_index); 576 577 if (alt_index) { 578 579 error = usbd_set_alt_interface_index 580 (uaa->device, iface_index, alt_index); 581 582 if (error) { 583 DPRINTF("could not set alternate " 584 "config, error=%s\n", usbd_errstr(error)); 585 goto detach; 586 } 587 } 588 sc->sc_iface_no = id->bInterfaceNumber; 589 590 error = usbd_transfer_setup(uaa->device, &iface_index, 591 sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, 592 sc, &sc->sc_mtx); 593 if (error) { 594 DPRINTF("error=%s\n", usbd_errstr(error)); 595 goto detach; 596 } 597 device_printf(sc->sc_dev, "using bi-directional mode\n"); 598 599 #if 0 600 /* 601 * This code is disabled because for some mysterious reason it causes 602 * printing not to work. But only sometimes, and mostly with 603 * UHCI and less often with OHCI. *sigh* 604 */ 605 { 606 struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); 607 struct usb_device_request req; 608 int len, alen; 609 610 req.bmRequestType = UT_READ_CLASS_INTERFACE; 611 req.bRequest = UR_GET_DEVICE_ID; 612 USETW(req.wValue, cd->bConfigurationValue); 613 USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); 614 USETW(req.wLength, sizeof devinfo - 1); 615 error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, 616 &alen, USB_DEFAULT_TIMEOUT); 617 if (error) { 618 device_printf(sc->sc_dev, "cannot get device id\n"); 619 } else if (alen <= 2) { 620 device_printf(sc->sc_dev, "empty device id, no " 621 "printer connected?\n"); 622 } else { 623 /* devinfo now contains an IEEE-1284 device ID */ 624 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); 625 if (len > sizeof devinfo - 3) 626 len = sizeof devinfo - 3; 627 devinfo[len] = 0; 628 printf("%s: device id <", device_get_nameunit(sc->sc_dev)); 629 ieee1284_print_id(devinfo + 2); 630 printf(">\n"); 631 } 632 } 633 #endif 634 635 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 636 &ulpt_fifo_methods, &sc->sc_fifo, 637 unit, -1, uaa->info.bIfaceIndex, 638 UID_ROOT, GID_OPERATOR, 0644); 639 if (error) { 640 goto detach; 641 } 642 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 643 &unlpt_fifo_methods, &sc->sc_fifo_noreset, 644 unit, -1, uaa->info.bIfaceIndex, 645 UID_ROOT, GID_OPERATOR, 0644); 646 if (error) { 647 goto detach; 648 } 649 /* start reading of status */ 650 651 mtx_lock(&sc->sc_mtx); 652 ulpt_watchdog(sc); 653 mtx_unlock(&sc->sc_mtx); 654 return (0); 655 656 detach: 657 ulpt_detach(dev); 658 return (ENOMEM); 659 } 660 661 static int 662 ulpt_detach(device_t dev) 663 { 664 struct ulpt_softc *sc = device_get_softc(dev); 665 666 DPRINTF("sc=%p\n", sc); 667 668 usb_fifo_detach(&sc->sc_fifo); 669 usb_fifo_detach(&sc->sc_fifo_noreset); 670 671 mtx_lock(&sc->sc_mtx); 672 usb_callout_stop(&sc->sc_watchdog); 673 mtx_unlock(&sc->sc_mtx); 674 675 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); 676 usb_callout_drain(&sc->sc_watchdog); 677 mtx_destroy(&sc->sc_mtx); 678 679 return (0); 680 } 681 682 #if 0 683 /* XXX This does not belong here. */ 684 685 /* 686 * Compare two strings until the second ends. 687 */ 688 689 static uint8_t 690 ieee1284_compare(const char *a, const char *b) 691 { 692 while (1) { 693 694 if (*b == 0) { 695 break; 696 } 697 if (*a != *b) { 698 return 1; 699 } 700 b++; 701 a++; 702 } 703 return 0; 704 } 705 706 /* 707 * Print select parts of an IEEE 1284 device ID. 708 */ 709 void 710 ieee1284_print_id(char *str) 711 { 712 char *p, *q; 713 714 for (p = str - 1; p; p = strchr(p, ';')) { 715 p++; /* skip ';' */ 716 if (ieee1284_compare(p, "MFG:") == 0 || 717 ieee1284_compare(p, "MANUFACTURER:") == 0 || 718 ieee1284_compare(p, "MDL:") == 0 || 719 ieee1284_compare(p, "MODEL:") == 0) { 720 q = strchr(p, ';'); 721 if (q) 722 printf("%.*s", (int)(q - p + 1), p); 723 } 724 } 725 } 726 727 #endif 728 729 static void 730 ulpt_watchdog(void *arg) 731 { 732 struct ulpt_softc *sc = arg; 733 734 mtx_assert(&sc->sc_mtx, MA_OWNED); 735 736 /* 737 * Only read status while the device is not opened, due to 738 * possible hardware or firmware bug in some printers. 739 */ 740 if (sc->sc_fflags == 0) 741 usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); 742 743 usb_callout_reset(&sc->sc_watchdog, 744 hz, &ulpt_watchdog, sc); 745 } 746 747 static devclass_t ulpt_devclass; 748 749 static device_method_t ulpt_methods[] = { 750 DEVMETHOD(device_probe, ulpt_probe), 751 DEVMETHOD(device_attach, ulpt_attach), 752 DEVMETHOD(device_detach, ulpt_detach), 753 DEVMETHOD_END 754 }; 755 756 static driver_t ulpt_driver = { 757 .name = "ulpt", 758 .methods = ulpt_methods, 759 .size = sizeof(struct ulpt_softc), 760 }; 761 762 DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, NULL, 0); 763 MODULE_DEPEND(ulpt, usb, 1, 1, 1); 764 MODULE_VERSION(ulpt, 1); 765 USB_PNP_HOST_INFO(ulpt_devs); 766