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, 0, "USB ulpt"); 80 SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RWTUN, 81 &ulpt_debug, 0, "Debug level"); 82 #endif 83 84 #define ULPT_BSIZE (1<<15) /* bytes */ 85 #define ULPT_IFQ_MAXLEN 2 /* units */ 86 87 #define UR_GET_DEVICE_ID 0x00 88 #define UR_GET_PORT_STATUS 0x01 89 #define UR_SOFT_RESET 0x02 90 91 #define LPS_NERR 0x08 /* printer no error */ 92 #define LPS_SELECT 0x10 /* printer selected */ 93 #define LPS_NOPAPER 0x20 /* printer out of paper */ 94 #define LPS_INVERT (LPS_SELECT|LPS_NERR) 95 #define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER) 96 97 enum { 98 ULPT_BULK_DT_WR, 99 ULPT_BULK_DT_RD, 100 ULPT_INTR_DT_RD, 101 ULPT_N_TRANSFER, 102 }; 103 104 struct ulpt_softc { 105 struct usb_fifo_sc sc_fifo; 106 struct usb_fifo_sc sc_fifo_noreset; 107 struct mtx sc_mtx; 108 struct usb_callout sc_watchdog; 109 110 device_t sc_dev; 111 struct usb_device *sc_udev; 112 struct usb_fifo *sc_fifo_open[2]; 113 struct usb_xfer *sc_xfer[ULPT_N_TRANSFER]; 114 115 int sc_fflags; /* current open flags, FREAD and 116 * FWRITE */ 117 uint8_t sc_iface_no; 118 uint8_t sc_last_status; 119 uint8_t sc_zlps; /* number of consequtive zero length 120 * packets received */ 121 }; 122 123 /* prototypes */ 124 125 static device_probe_t ulpt_probe; 126 static device_attach_t ulpt_attach; 127 static device_detach_t ulpt_detach; 128 129 static usb_callback_t ulpt_write_callback; 130 static usb_callback_t ulpt_read_callback; 131 static usb_callback_t ulpt_status_callback; 132 133 static void ulpt_reset(struct ulpt_softc *); 134 static void ulpt_watchdog(void *); 135 136 static usb_fifo_close_t ulpt_close; 137 static usb_fifo_cmd_t ulpt_start_read; 138 static usb_fifo_cmd_t ulpt_start_write; 139 static usb_fifo_cmd_t ulpt_stop_read; 140 static usb_fifo_cmd_t ulpt_stop_write; 141 static usb_fifo_ioctl_t ulpt_ioctl; 142 static usb_fifo_open_t ulpt_open; 143 static usb_fifo_open_t unlpt_open; 144 145 static struct usb_fifo_methods ulpt_fifo_methods = { 146 .f_close = &ulpt_close, 147 .f_ioctl = &ulpt_ioctl, 148 .f_open = &ulpt_open, 149 .f_start_read = &ulpt_start_read, 150 .f_start_write = &ulpt_start_write, 151 .f_stop_read = &ulpt_stop_read, 152 .f_stop_write = &ulpt_stop_write, 153 .basename[0] = "ulpt", 154 }; 155 156 static struct usb_fifo_methods unlpt_fifo_methods = { 157 .f_close = &ulpt_close, 158 .f_ioctl = &ulpt_ioctl, 159 .f_open = &unlpt_open, 160 .f_start_read = &ulpt_start_read, 161 .f_start_write = &ulpt_start_write, 162 .f_stop_read = &ulpt_stop_read, 163 .f_stop_write = &ulpt_stop_write, 164 .basename[0] = "unlpt", 165 }; 166 167 static void 168 ulpt_reset(struct ulpt_softc *sc) 169 { 170 struct usb_device_request req; 171 172 DPRINTFN(2, "\n"); 173 174 req.bRequest = UR_SOFT_RESET; 175 USETW(req.wValue, 0); 176 USETW(req.wIndex, sc->sc_iface_no); 177 USETW(req.wLength, 0); 178 179 /* 180 * There was a mistake in the USB printer 1.0 spec that gave the 181 * request type as UT_WRITE_CLASS_OTHER; it should have been 182 * UT_WRITE_CLASS_INTERFACE. Many printers use the old one, 183 * so we try both. 184 */ 185 186 mtx_lock(&sc->sc_mtx); 187 req.bmRequestType = UT_WRITE_CLASS_OTHER; 188 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 189 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.0 */ 190 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 191 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 192 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.1 */ 193 /* ignore error */ 194 } 195 } 196 mtx_unlock(&sc->sc_mtx); 197 } 198 199 static void 200 ulpt_write_callback(struct usb_xfer *xfer, usb_error_t error) 201 { 202 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 203 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_TX]; 204 struct usb_page_cache *pc; 205 int actlen, max; 206 207 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 208 209 if (f == NULL) { 210 /* should not happen */ 211 DPRINTF("no FIFO\n"); 212 return; 213 } 214 DPRINTF("state=0x%x actlen=%d\n", USB_GET_STATE(xfer), actlen); 215 216 switch (USB_GET_STATE(xfer)) { 217 case USB_ST_TRANSFERRED: 218 case USB_ST_SETUP: 219 tr_setup: 220 pc = usbd_xfer_get_frame(xfer, 0); 221 max = usbd_xfer_max_len(xfer); 222 if (usb_fifo_get_data(f, pc, 0, max, &actlen, 0)) { 223 usbd_xfer_set_frame_len(xfer, 0, actlen); 224 usbd_transfer_submit(xfer); 225 } 226 break; 227 228 default: /* Error */ 229 if (error != USB_ERR_CANCELLED) { 230 /* try to clear stall first */ 231 usbd_xfer_set_stall(xfer); 232 goto tr_setup; 233 } 234 break; 235 } 236 } 237 238 static void 239 ulpt_read_callback(struct usb_xfer *xfer, usb_error_t error) 240 { 241 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 242 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_RX]; 243 struct usb_page_cache *pc; 244 int actlen; 245 246 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 247 248 if (f == NULL) { 249 /* should not happen */ 250 DPRINTF("no FIFO\n"); 251 return; 252 } 253 DPRINTF("state=0x%x\n", USB_GET_STATE(xfer)); 254 255 switch (USB_GET_STATE(xfer)) { 256 case USB_ST_TRANSFERRED: 257 258 if (actlen == 0) { 259 260 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: 277 tr_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 } 297 298 static void 299 ulpt_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 } 353 354 static 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 }; 382 383 static void 384 ulpt_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 } 390 391 static void 392 ulpt_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 } 398 399 static void 400 ulpt_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 } 406 407 static void 408 ulpt_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 } 414 415 static int 416 ulpt_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) { 423 424 /* reset USB parallel port */ 425 426 ulpt_reset(sc); 427 } 428 return (unlpt_open(fifo, fflags)); 429 } 430 431 static int 432 unlpt_open(struct usb_fifo *fifo, int fflags) 433 { 434 struct ulpt_softc *sc = usb_fifo_softc(fifo); 435 436 if (sc->sc_fflags & fflags) { 437 return (EBUSY); 438 } 439 if (fflags & FREAD) { 440 /* clear stall first */ 441 mtx_lock(&sc->sc_mtx); 442 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]); 443 mtx_unlock(&sc->sc_mtx); 444 if (usb_fifo_alloc_buffer(fifo, 445 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]), 446 ULPT_IFQ_MAXLEN)) { 447 return (ENOMEM); 448 } 449 /* set which FIFO is opened */ 450 sc->sc_fifo_open[USB_FIFO_RX] = fifo; 451 } 452 if (fflags & FWRITE) { 453 /* clear stall first */ 454 mtx_lock(&sc->sc_mtx); 455 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]); 456 mtx_unlock(&sc->sc_mtx); 457 if (usb_fifo_alloc_buffer(fifo, 458 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]), 459 ULPT_IFQ_MAXLEN)) { 460 return (ENOMEM); 461 } 462 /* set which FIFO is opened */ 463 sc->sc_fifo_open[USB_FIFO_TX] = fifo; 464 } 465 sc->sc_fflags |= fflags & (FREAD | FWRITE); 466 return (0); 467 } 468 469 static void 470 ulpt_close(struct usb_fifo *fifo, int fflags) 471 { 472 struct ulpt_softc *sc = usb_fifo_softc(fifo); 473 474 sc->sc_fflags &= ~(fflags & (FREAD | FWRITE)); 475 476 if (fflags & (FREAD | FWRITE)) { 477 usb_fifo_free_buffer(fifo); 478 } 479 } 480 481 static int 482 ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, 483 int fflags) 484 { 485 return (ENODEV); 486 } 487 488 static const STRUCT_USB_HOST_ID ulpt_devs[] = { 489 /* Uni-directional USB printer */ 490 {USB_IFACE_CLASS(UICLASS_PRINTER), 491 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 492 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)}, 493 494 /* Bi-directional USB printer */ 495 {USB_IFACE_CLASS(UICLASS_PRINTER), 496 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 497 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 498 499 /* 1284 USB printer */ 500 {USB_IFACE_CLASS(UICLASS_PRINTER), 501 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 502 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)}, 503 }; 504 505 static int 506 ulpt_probe(device_t dev) 507 { 508 struct usb_attach_arg *uaa = device_get_ivars(dev); 509 int error; 510 511 DPRINTFN(11, "\n"); 512 513 if (uaa->usb_mode != USB_MODE_HOST) 514 return (ENXIO); 515 516 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); 517 if (error) 518 return (error); 519 520 return (BUS_PROBE_GENERIC); 521 } 522 523 static int 524 ulpt_attach(device_t dev) 525 { 526 struct usb_attach_arg *uaa = device_get_ivars(dev); 527 struct ulpt_softc *sc = device_get_softc(dev); 528 struct usb_interface_descriptor *id; 529 int unit = device_get_unit(dev); 530 int error; 531 uint8_t iface_index = uaa->info.bIfaceIndex; 532 uint8_t alt_index; 533 534 DPRINTFN(11, "sc=%p\n", sc); 535 536 sc->sc_dev = dev; 537 sc->sc_udev = uaa->device; 538 539 device_set_usb_desc(dev); 540 541 mtx_init(&sc->sc_mtx, "ulpt lock", NULL, MTX_DEF | MTX_RECURSE); 542 543 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 544 545 /* search through all the descriptors looking for bidir mode */ 546 547 id = usbd_get_interface_descriptor(uaa->iface); 548 alt_index = 0xFF; 549 while (1) { 550 if (id == NULL) { 551 break; 552 } 553 if ((id->bDescriptorType == UDESC_INTERFACE) && 554 (id->bLength >= sizeof(*id))) { 555 if (id->bInterfaceNumber != uaa->info.bIfaceNum) { 556 break; 557 } else { 558 alt_index++; 559 if ((id->bInterfaceClass == UICLASS_PRINTER) && 560 (id->bInterfaceSubClass == UISUBCLASS_PRINTER) && 561 (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { 562 goto found; 563 } 564 } 565 } 566 id = (void *)usb_desc_foreach( 567 usbd_get_config_descriptor(uaa->device), (void *)id); 568 } 569 goto detach; 570 571 found: 572 573 DPRINTF("setting alternate " 574 "config number: %d\n", alt_index); 575 576 if (alt_index) { 577 578 error = usbd_set_alt_interface_index 579 (uaa->device, iface_index, alt_index); 580 581 if (error) { 582 DPRINTF("could not set alternate " 583 "config, error=%s\n", usbd_errstr(error)); 584 goto detach; 585 } 586 } 587 sc->sc_iface_no = id->bInterfaceNumber; 588 589 error = usbd_transfer_setup(uaa->device, &iface_index, 590 sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, 591 sc, &sc->sc_mtx); 592 if (error) { 593 DPRINTF("error=%s\n", usbd_errstr(error)); 594 goto detach; 595 } 596 device_printf(sc->sc_dev, "using bi-directional mode\n"); 597 598 #if 0 599 /* 600 * This code is disabled because for some mysterious reason it causes 601 * printing not to work. But only sometimes, and mostly with 602 * UHCI and less often with OHCI. *sigh* 603 */ 604 { 605 struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); 606 struct usb_device_request req; 607 int len, alen; 608 609 req.bmRequestType = UT_READ_CLASS_INTERFACE; 610 req.bRequest = UR_GET_DEVICE_ID; 611 USETW(req.wValue, cd->bConfigurationValue); 612 USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); 613 USETW(req.wLength, sizeof devinfo - 1); 614 error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, 615 &alen, USB_DEFAULT_TIMEOUT); 616 if (error) { 617 device_printf(sc->sc_dev, "cannot get device id\n"); 618 } else if (alen <= 2) { 619 device_printf(sc->sc_dev, "empty device id, no " 620 "printer connected?\n"); 621 } else { 622 /* devinfo now contains an IEEE-1284 device ID */ 623 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); 624 if (len > sizeof devinfo - 3) 625 len = sizeof devinfo - 3; 626 devinfo[len] = 0; 627 printf("%s: device id <", device_get_nameunit(sc->sc_dev)); 628 ieee1284_print_id(devinfo + 2); 629 printf(">\n"); 630 } 631 } 632 #endif 633 634 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 635 &ulpt_fifo_methods, &sc->sc_fifo, 636 unit, -1, uaa->info.bIfaceIndex, 637 UID_ROOT, GID_OPERATOR, 0644); 638 if (error) { 639 goto detach; 640 } 641 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 642 &unlpt_fifo_methods, &sc->sc_fifo_noreset, 643 unit, -1, uaa->info.bIfaceIndex, 644 UID_ROOT, GID_OPERATOR, 0644); 645 if (error) { 646 goto detach; 647 } 648 /* start reading of status */ 649 650 mtx_lock(&sc->sc_mtx); 651 ulpt_watchdog(sc); 652 mtx_unlock(&sc->sc_mtx); 653 return (0); 654 655 detach: 656 ulpt_detach(dev); 657 return (ENOMEM); 658 } 659 660 static int 661 ulpt_detach(device_t dev) 662 { 663 struct ulpt_softc *sc = device_get_softc(dev); 664 665 DPRINTF("sc=%p\n", sc); 666 667 usb_fifo_detach(&sc->sc_fifo); 668 usb_fifo_detach(&sc->sc_fifo_noreset); 669 670 mtx_lock(&sc->sc_mtx); 671 usb_callout_stop(&sc->sc_watchdog); 672 mtx_unlock(&sc->sc_mtx); 673 674 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); 675 usb_callout_drain(&sc->sc_watchdog); 676 mtx_destroy(&sc->sc_mtx); 677 678 return (0); 679 } 680 681 #if 0 682 /* XXX This does not belong here. */ 683 684 /* 685 * Compare two strings until the second ends. 686 */ 687 688 static uint8_t 689 ieee1284_compare(const char *a, const char *b) 690 { 691 while (1) { 692 693 if (*b == 0) { 694 break; 695 } 696 if (*a != *b) { 697 return 1; 698 } 699 b++; 700 a++; 701 } 702 return 0; 703 } 704 705 /* 706 * Print select parts of an IEEE 1284 device ID. 707 */ 708 void 709 ieee1284_print_id(char *str) 710 { 711 char *p, *q; 712 713 for (p = str - 1; p; p = strchr(p, ';')) { 714 p++; /* skip ';' */ 715 if (ieee1284_compare(p, "MFG:") == 0 || 716 ieee1284_compare(p, "MANUFACTURER:") == 0 || 717 ieee1284_compare(p, "MDL:") == 0 || 718 ieee1284_compare(p, "MODEL:") == 0) { 719 q = strchr(p, ';'); 720 if (q) 721 printf("%.*s", (int)(q - p + 1), p); 722 } 723 } 724 } 725 726 #endif 727 728 static void 729 ulpt_watchdog(void *arg) 730 { 731 struct ulpt_softc *sc = arg; 732 733 mtx_assert(&sc->sc_mtx, MA_OWNED); 734 735 /* 736 * Only read status while the device is not opened, due to 737 * possible hardware or firmware bug in some printers. 738 */ 739 if (sc->sc_fflags == 0) 740 usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); 741 742 usb_callout_reset(&sc->sc_watchdog, 743 hz, &ulpt_watchdog, sc); 744 } 745 746 static devclass_t ulpt_devclass; 747 748 static device_method_t ulpt_methods[] = { 749 DEVMETHOD(device_probe, ulpt_probe), 750 DEVMETHOD(device_attach, ulpt_attach), 751 DEVMETHOD(device_detach, ulpt_detach), 752 DEVMETHOD_END 753 }; 754 755 static driver_t ulpt_driver = { 756 .name = "ulpt", 757 .methods = ulpt_methods, 758 .size = sizeof(struct ulpt_softc), 759 }; 760 761 DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, NULL, 0); 762 MODULE_DEPEND(ulpt, usb, 1, 1, 1); 763 MODULE_VERSION(ulpt, 1); 764 USB_PNP_HOST_INFO(ulpt_devs); 765