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 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 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 /* reset USB parallel port */ 424 425 ulpt_reset(sc); 426 } 427 return (unlpt_open(fifo, fflags)); 428 } 429 430 static int 431 unlpt_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 } 467 468 static void 469 ulpt_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 } 479 480 static int 481 ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, 482 int fflags) 483 { 484 return (ENODEV); 485 } 486 487 static 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 /* Epson printer */ 504 {USB_VENDOR(USB_VENDOR_EPSON), 505 USB_PRODUCT(USB_PRODUCT_EPSON_TMU220B), 506 USB_IFACE_CLASS(UICLASS_VENDOR), 507 USB_IFACE_SUBCLASS(UISUBCLASS_VENDOR), 508 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 509 }; 510 511 static int 512 ulpt_probe(device_t dev) 513 { 514 struct usb_attach_arg *uaa = device_get_ivars(dev); 515 int error; 516 517 DPRINTFN(11, "\n"); 518 519 if (uaa->usb_mode != USB_MODE_HOST) 520 return (ENXIO); 521 522 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); 523 if (error) 524 return (error); 525 526 return (BUS_PROBE_GENERIC); 527 } 528 529 static int 530 ulpt_attach(device_t dev) 531 { 532 struct usb_attach_arg *uaa = device_get_ivars(dev); 533 struct ulpt_softc *sc = device_get_softc(dev); 534 struct usb_interface_descriptor *id; 535 int unit = device_get_unit(dev); 536 int error; 537 uint8_t iface_index = uaa->info.bIfaceIndex; 538 uint8_t alt_index; 539 540 DPRINTFN(11, "sc=%p\n", sc); 541 542 sc->sc_dev = dev; 543 sc->sc_udev = uaa->device; 544 545 device_set_usb_desc(dev); 546 547 mtx_init(&sc->sc_mtx, "ulpt lock", NULL, MTX_DEF | MTX_RECURSE); 548 549 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 550 551 /* search through all the descriptors looking for bidir mode */ 552 553 id = usbd_get_interface_descriptor(uaa->iface); 554 alt_index = 0xFF; 555 while (1) { 556 if (id == NULL) { 557 break; 558 } 559 if ((id->bDescriptorType == UDESC_INTERFACE) && 560 (id->bLength >= sizeof(*id))) { 561 if (id->bInterfaceNumber != uaa->info.bIfaceNum) { 562 break; 563 } else { 564 alt_index++; 565 if ((id->bInterfaceClass == UICLASS_PRINTER || 566 id->bInterfaceClass == UICLASS_VENDOR) && 567 (id->bInterfaceSubClass == UISUBCLASS_PRINTER || 568 id->bInterfaceSubClass == UISUBCLASS_VENDOR) && 569 (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { 570 goto found; 571 } 572 } 573 } 574 id = (void *)usb_desc_foreach( 575 usbd_get_config_descriptor(uaa->device), (void *)id); 576 } 577 goto detach; 578 579 found: 580 581 DPRINTF("setting alternate " 582 "config number: %d\n", alt_index); 583 584 if (alt_index) { 585 error = usbd_set_alt_interface_index 586 (uaa->device, iface_index, alt_index); 587 588 if (error) { 589 DPRINTF("could not set alternate " 590 "config, error=%s\n", usbd_errstr(error)); 591 goto detach; 592 } 593 } 594 sc->sc_iface_no = id->bInterfaceNumber; 595 596 error = usbd_transfer_setup(uaa->device, &iface_index, 597 sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, 598 sc, &sc->sc_mtx); 599 if (error) { 600 DPRINTF("error=%s\n", usbd_errstr(error)); 601 goto detach; 602 } 603 device_printf(sc->sc_dev, "using bi-directional mode\n"); 604 605 #if 0 606 /* 607 * This code is disabled because for some mysterious reason it causes 608 * printing not to work. But only sometimes, and mostly with 609 * UHCI and less often with OHCI. *sigh* 610 */ 611 { 612 struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); 613 struct usb_device_request req; 614 int len, alen; 615 616 req.bmRequestType = UT_READ_CLASS_INTERFACE; 617 req.bRequest = UR_GET_DEVICE_ID; 618 USETW(req.wValue, cd->bConfigurationValue); 619 USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); 620 USETW(req.wLength, sizeof devinfo - 1); 621 error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, 622 &alen, USB_DEFAULT_TIMEOUT); 623 if (error) { 624 device_printf(sc->sc_dev, "cannot get device id\n"); 625 } else if (alen <= 2) { 626 device_printf(sc->sc_dev, "empty device id, no " 627 "printer connected?\n"); 628 } else { 629 /* devinfo now contains an IEEE-1284 device ID */ 630 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); 631 if (len > sizeof devinfo - 3) 632 len = sizeof devinfo - 3; 633 devinfo[len] = 0; 634 printf("%s: device id <", device_get_nameunit(sc->sc_dev)); 635 ieee1284_print_id(devinfo + 2); 636 printf(">\n"); 637 } 638 } 639 #endif 640 641 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 642 &ulpt_fifo_methods, &sc->sc_fifo, 643 unit, -1, uaa->info.bIfaceIndex, 644 UID_ROOT, GID_OPERATOR, 0644); 645 if (error) { 646 goto detach; 647 } 648 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 649 &unlpt_fifo_methods, &sc->sc_fifo_noreset, 650 unit, -1, uaa->info.bIfaceIndex, 651 UID_ROOT, GID_OPERATOR, 0644); 652 if (error) { 653 goto detach; 654 } 655 /* start reading of status */ 656 657 mtx_lock(&sc->sc_mtx); 658 ulpt_watchdog(sc); 659 mtx_unlock(&sc->sc_mtx); 660 return (0); 661 662 detach: 663 ulpt_detach(dev); 664 return (ENOMEM); 665 } 666 667 static int 668 ulpt_detach(device_t dev) 669 { 670 struct ulpt_softc *sc = device_get_softc(dev); 671 672 DPRINTF("sc=%p\n", sc); 673 674 usb_fifo_detach(&sc->sc_fifo); 675 usb_fifo_detach(&sc->sc_fifo_noreset); 676 677 mtx_lock(&sc->sc_mtx); 678 usb_callout_stop(&sc->sc_watchdog); 679 mtx_unlock(&sc->sc_mtx); 680 681 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); 682 usb_callout_drain(&sc->sc_watchdog); 683 mtx_destroy(&sc->sc_mtx); 684 685 return (0); 686 } 687 688 #if 0 689 /* XXX This does not belong here. */ 690 691 /* 692 * Compare two strings until the second ends. 693 */ 694 695 static uint8_t 696 ieee1284_compare(const char *a, const char *b) 697 { 698 while (1) { 699 if (*b == 0) { 700 break; 701 } 702 if (*a != *b) { 703 return 1; 704 } 705 b++; 706 a++; 707 } 708 return 0; 709 } 710 711 /* 712 * Print select parts of an IEEE 1284 device ID. 713 */ 714 void 715 ieee1284_print_id(char *str) 716 { 717 char *p, *q; 718 719 for (p = str - 1; p; p = strchr(p, ';')) { 720 p++; /* skip ';' */ 721 if (ieee1284_compare(p, "MFG:") == 0 || 722 ieee1284_compare(p, "MANUFACTURER:") == 0 || 723 ieee1284_compare(p, "MDL:") == 0 || 724 ieee1284_compare(p, "MODEL:") == 0) { 725 q = strchr(p, ';'); 726 if (q) 727 printf("%.*s", (int)(q - p + 1), p); 728 } 729 } 730 } 731 732 #endif 733 734 static void 735 ulpt_watchdog(void *arg) 736 { 737 struct ulpt_softc *sc = arg; 738 739 mtx_assert(&sc->sc_mtx, MA_OWNED); 740 741 /* 742 * Only read status while the device is not opened, due to 743 * possible hardware or firmware bug in some printers. 744 */ 745 if (sc->sc_fflags == 0) 746 usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); 747 748 usb_callout_reset(&sc->sc_watchdog, 749 hz, &ulpt_watchdog, sc); 750 } 751 752 static device_method_t ulpt_methods[] = { 753 DEVMETHOD(device_probe, ulpt_probe), 754 DEVMETHOD(device_attach, ulpt_attach), 755 DEVMETHOD(device_detach, ulpt_detach), 756 DEVMETHOD_END 757 }; 758 759 static driver_t ulpt_driver = { 760 .name = "ulpt", 761 .methods = ulpt_methods, 762 .size = sizeof(struct ulpt_softc), 763 }; 764 765 DRIVER_MODULE(ulpt, uhub, ulpt_driver, NULL, NULL); 766 MODULE_DEPEND(ulpt, usb, 1, 1, 1); 767 MODULE_VERSION(ulpt, 1); 768 USB_PNP_HOST_INFO(ulpt_devs); 769