1 /* $NetBSD: ulpt.c,v 1.60 2003/10/04 21:19:50 augustss Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Lennart Augustsson (lennart@augustsson.net) at 11 * Carlstedt Research & Technology. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * Printer Class spec: http://www.usb.org/developers/data/devclass/usbprint109.PDF 37 * Printer Class spec: http://www.usb.org/developers/devclass_docs/usbprint11.pdf 38 */ 39 40 #include <sys/stdint.h> 41 #include <sys/stddef.h> 42 #include <sys/param.h> 43 #include <sys/queue.h> 44 #include <sys/types.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/bus.h> 48 #include <sys/module.h> 49 #include <sys/lock.h> 50 #include <sys/mutex.h> 51 #include <sys/condvar.h> 52 #include <sys/sysctl.h> 53 #include <sys/sx.h> 54 #include <sys/unistd.h> 55 #include <sys/callout.h> 56 #include <sys/malloc.h> 57 #include <sys/priv.h> 58 #include <sys/syslog.h> 59 #include <sys/selinfo.h> 60 #include <sys/conf.h> 61 #include <sys/fcntl.h> 62 63 #include <dev/usb/usb.h> 64 #include <dev/usb/usbdi.h> 65 #include <dev/usb/usbdi_util.h> 66 #include <dev/usb/usbhid.h> 67 #include "usbdevs.h" 68 69 #define USB_DEBUG_VAR ulpt_debug 70 #include <dev/usb/usb_debug.h> 71 #include <dev/usb/usb_process.h> 72 73 #ifdef USB_DEBUG 74 static int ulpt_debug = 0; 75 76 static SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 77 "USB ulpt"); 78 SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RWTUN, 79 &ulpt_debug, 0, "Debug level"); 80 #endif 81 82 #define ULPT_BSIZE (1<<15) /* bytes */ 83 #define ULPT_IFQ_MAXLEN 2 /* units */ 84 85 #define UR_GET_DEVICE_ID 0x00 86 #define UR_GET_PORT_STATUS 0x01 87 #define UR_SOFT_RESET 0x02 88 89 #define LPS_NERR 0x08 /* printer no error */ 90 #define LPS_SELECT 0x10 /* printer selected */ 91 #define LPS_NOPAPER 0x20 /* printer out of paper */ 92 #define LPS_INVERT (LPS_SELECT|LPS_NERR) 93 #define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER) 94 95 enum { 96 ULPT_BULK_DT_WR, 97 ULPT_BULK_DT_RD, 98 ULPT_INTR_DT_RD, 99 ULPT_N_TRANSFER, 100 }; 101 102 struct ulpt_softc { 103 struct usb_fifo_sc sc_fifo; 104 struct usb_fifo_sc sc_fifo_noreset; 105 struct mtx sc_mtx; 106 struct usb_callout sc_watchdog; 107 108 device_t sc_dev; 109 struct usb_device *sc_udev; 110 struct usb_fifo *sc_fifo_open[2]; 111 struct usb_xfer *sc_xfer[ULPT_N_TRANSFER]; 112 113 int sc_fflags; /* current open flags, FREAD and 114 * FWRITE */ 115 uint8_t sc_iface_no; 116 uint8_t sc_last_status; 117 uint8_t sc_zlps; /* number of consequtive zero length 118 * packets received */ 119 }; 120 121 /* prototypes */ 122 123 static device_probe_t ulpt_probe; 124 static device_attach_t ulpt_attach; 125 static device_detach_t ulpt_detach; 126 127 static usb_callback_t ulpt_write_callback; 128 static usb_callback_t ulpt_read_callback; 129 static usb_callback_t ulpt_status_callback; 130 131 static void ulpt_reset(struct ulpt_softc *); 132 static void ulpt_watchdog(void *); 133 134 static usb_fifo_close_t ulpt_close; 135 static usb_fifo_cmd_t ulpt_start_read; 136 static usb_fifo_cmd_t ulpt_start_write; 137 static usb_fifo_cmd_t ulpt_stop_read; 138 static usb_fifo_cmd_t ulpt_stop_write; 139 static usb_fifo_ioctl_t ulpt_ioctl; 140 static usb_fifo_open_t ulpt_open; 141 static usb_fifo_open_t unlpt_open; 142 143 static struct usb_fifo_methods ulpt_fifo_methods = { 144 .f_close = &ulpt_close, 145 .f_ioctl = &ulpt_ioctl, 146 .f_open = &ulpt_open, 147 .f_start_read = &ulpt_start_read, 148 .f_start_write = &ulpt_start_write, 149 .f_stop_read = &ulpt_stop_read, 150 .f_stop_write = &ulpt_stop_write, 151 .basename[0] = "ulpt", 152 }; 153 154 static struct usb_fifo_methods unlpt_fifo_methods = { 155 .f_close = &ulpt_close, 156 .f_ioctl = &ulpt_ioctl, 157 .f_open = &unlpt_open, 158 .f_start_read = &ulpt_start_read, 159 .f_start_write = &ulpt_start_write, 160 .f_stop_read = &ulpt_stop_read, 161 .f_stop_write = &ulpt_stop_write, 162 .basename[0] = "unlpt", 163 }; 164 165 static void 166 ulpt_reset(struct ulpt_softc *sc) 167 { 168 struct usb_device_request req; 169 170 DPRINTFN(2, "\n"); 171 172 req.bRequest = UR_SOFT_RESET; 173 USETW(req.wValue, 0); 174 USETW(req.wIndex, sc->sc_iface_no); 175 USETW(req.wLength, 0); 176 177 /* 178 * There was a mistake in the USB printer 1.0 spec that gave the 179 * request type as UT_WRITE_CLASS_OTHER; it should have been 180 * UT_WRITE_CLASS_INTERFACE. Many printers use the old one, 181 * so we try both. 182 */ 183 184 mtx_lock(&sc->sc_mtx); 185 req.bmRequestType = UT_WRITE_CLASS_OTHER; 186 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 187 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.0 */ 188 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 189 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 190 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.1 */ 191 /* ignore error */ 192 } 193 } 194 mtx_unlock(&sc->sc_mtx); 195 } 196 197 static void 198 ulpt_write_callback(struct usb_xfer *xfer, usb_error_t error) 199 { 200 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 201 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_TX]; 202 struct usb_page_cache *pc; 203 int actlen, max; 204 205 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 206 207 if (f == NULL) { 208 /* should not happen */ 209 DPRINTF("no FIFO\n"); 210 return; 211 } 212 DPRINTF("state=0x%x actlen=%d\n", USB_GET_STATE(xfer), actlen); 213 214 switch (USB_GET_STATE(xfer)) { 215 case USB_ST_TRANSFERRED: 216 case USB_ST_SETUP: 217 tr_setup: 218 pc = usbd_xfer_get_frame(xfer, 0); 219 max = usbd_xfer_max_len(xfer); 220 if (usb_fifo_get_data(f, pc, 0, max, &actlen, 0)) { 221 usbd_xfer_set_frame_len(xfer, 0, actlen); 222 usbd_transfer_submit(xfer); 223 } 224 break; 225 226 default: /* Error */ 227 if (error != USB_ERR_CANCELLED) { 228 /* try to clear stall first */ 229 usbd_xfer_set_stall(xfer); 230 goto tr_setup; 231 } 232 break; 233 } 234 } 235 236 static void 237 ulpt_read_callback(struct usb_xfer *xfer, usb_error_t error) 238 { 239 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 240 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_RX]; 241 struct usb_page_cache *pc; 242 int actlen; 243 244 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 245 246 if (f == NULL) { 247 /* should not happen */ 248 DPRINTF("no FIFO\n"); 249 return; 250 } 251 DPRINTF("state=0x%x\n", USB_GET_STATE(xfer)); 252 253 switch (USB_GET_STATE(xfer)) { 254 case USB_ST_TRANSFERRED: 255 256 if (actlen == 0) { 257 if (sc->sc_zlps == 4) { 258 /* enable BULK throttle */ 259 usbd_xfer_set_interval(xfer, 500); /* ms */ 260 } else { 261 sc->sc_zlps++; 262 } 263 } else { 264 /* disable BULK throttle */ 265 266 usbd_xfer_set_interval(xfer, 0); 267 sc->sc_zlps = 0; 268 } 269 270 pc = usbd_xfer_get_frame(xfer, 0); 271 usb_fifo_put_data(f, pc, 0, actlen, 1); 272 273 case USB_ST_SETUP: 274 tr_setup: 275 if (usb_fifo_put_bytes_max(f) != 0) { 276 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 277 usbd_transfer_submit(xfer); 278 } 279 break; 280 281 default: /* Error */ 282 /* disable BULK throttle */ 283 usbd_xfer_set_interval(xfer, 0); 284 sc->sc_zlps = 0; 285 286 if (error != USB_ERR_CANCELLED) { 287 /* try to clear stall first */ 288 usbd_xfer_set_stall(xfer); 289 goto tr_setup; 290 } 291 break; 292 } 293 } 294 295 static void 296 ulpt_status_callback(struct usb_xfer *xfer, usb_error_t error) 297 { 298 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 299 struct usb_device_request req; 300 struct usb_page_cache *pc; 301 uint8_t cur_status; 302 uint8_t new_status; 303 304 switch (USB_GET_STATE(xfer)) { 305 case USB_ST_TRANSFERRED: 306 307 pc = usbd_xfer_get_frame(xfer, 1); 308 usbd_copy_out(pc, 0, &cur_status, 1); 309 310 cur_status = (cur_status ^ LPS_INVERT) & LPS_MASK; 311 new_status = cur_status & ~sc->sc_last_status; 312 sc->sc_last_status = cur_status; 313 314 if (new_status & LPS_SELECT) 315 log(LOG_NOTICE, "%s: offline\n", 316 device_get_nameunit(sc->sc_dev)); 317 else if (new_status & LPS_NOPAPER) 318 log(LOG_NOTICE, "%s: out of paper\n", 319 device_get_nameunit(sc->sc_dev)); 320 else if (new_status & LPS_NERR) 321 log(LOG_NOTICE, "%s: output error\n", 322 device_get_nameunit(sc->sc_dev)); 323 break; 324 325 case USB_ST_SETUP: 326 req.bmRequestType = UT_READ_CLASS_INTERFACE; 327 req.bRequest = UR_GET_PORT_STATUS; 328 USETW(req.wValue, 0); 329 req.wIndex[0] = sc->sc_iface_no; 330 req.wIndex[1] = 0; 331 USETW(req.wLength, 1); 332 333 pc = usbd_xfer_get_frame(xfer, 0); 334 usbd_copy_in(pc, 0, &req, sizeof(req)); 335 336 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 337 usbd_xfer_set_frame_len(xfer, 1, 1); 338 usbd_xfer_set_frames(xfer, 2); 339 usbd_transfer_submit(xfer); 340 break; 341 342 default: /* Error */ 343 DPRINTF("error=%s\n", usbd_errstr(error)); 344 if (error != USB_ERR_CANCELLED) { 345 /* wait for next watchdog timeout */ 346 } 347 break; 348 } 349 } 350 351 static const struct usb_config ulpt_config[ULPT_N_TRANSFER] = { 352 [ULPT_BULK_DT_WR] = { 353 .type = UE_BULK, 354 .endpoint = UE_ADDR_ANY, 355 .direction = UE_DIR_OUT, 356 .bufsize = ULPT_BSIZE, 357 .flags = {.pipe_bof = 1,.proxy_buffer = 1}, 358 .callback = &ulpt_write_callback, 359 }, 360 361 [ULPT_BULK_DT_RD] = { 362 .type = UE_BULK, 363 .endpoint = UE_ADDR_ANY, 364 .direction = UE_DIR_IN, 365 .bufsize = ULPT_BSIZE, 366 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1}, 367 .callback = &ulpt_read_callback, 368 }, 369 370 [ULPT_INTR_DT_RD] = { 371 .type = UE_CONTROL, 372 .endpoint = 0x00, /* Control pipe */ 373 .direction = UE_DIR_ANY, 374 .bufsize = sizeof(struct usb_device_request) + 1, 375 .callback = &ulpt_status_callback, 376 .timeout = 1000, /* 1 second */ 377 }, 378 }; 379 380 static void 381 ulpt_start_read(struct usb_fifo *fifo) 382 { 383 struct ulpt_softc *sc = usb_fifo_softc(fifo); 384 385 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_RD]); 386 } 387 388 static void 389 ulpt_stop_read(struct usb_fifo *fifo) 390 { 391 struct ulpt_softc *sc = usb_fifo_softc(fifo); 392 393 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_RD]); 394 } 395 396 static void 397 ulpt_start_write(struct usb_fifo *fifo) 398 { 399 struct ulpt_softc *sc = usb_fifo_softc(fifo); 400 401 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_WR]); 402 } 403 404 static void 405 ulpt_stop_write(struct usb_fifo *fifo) 406 { 407 struct ulpt_softc *sc = usb_fifo_softc(fifo); 408 409 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_WR]); 410 } 411 412 static int 413 ulpt_open(struct usb_fifo *fifo, int fflags) 414 { 415 struct ulpt_softc *sc = usb_fifo_softc(fifo); 416 417 /* we assume that open is a serial process */ 418 419 if (sc->sc_fflags == 0) { 420 /* reset USB parallel port */ 421 422 ulpt_reset(sc); 423 } 424 return (unlpt_open(fifo, fflags)); 425 } 426 427 static int 428 unlpt_open(struct usb_fifo *fifo, int fflags) 429 { 430 struct ulpt_softc *sc = usb_fifo_softc(fifo); 431 432 if (sc->sc_fflags & fflags) { 433 return (EBUSY); 434 } 435 if (fflags & FREAD) { 436 /* clear stall first */ 437 mtx_lock(&sc->sc_mtx); 438 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]); 439 mtx_unlock(&sc->sc_mtx); 440 if (usb_fifo_alloc_buffer(fifo, 441 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]), 442 ULPT_IFQ_MAXLEN)) { 443 return (ENOMEM); 444 } 445 /* set which FIFO is opened */ 446 sc->sc_fifo_open[USB_FIFO_RX] = fifo; 447 } 448 if (fflags & FWRITE) { 449 /* clear stall first */ 450 mtx_lock(&sc->sc_mtx); 451 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]); 452 mtx_unlock(&sc->sc_mtx); 453 if (usb_fifo_alloc_buffer(fifo, 454 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]), 455 ULPT_IFQ_MAXLEN)) { 456 return (ENOMEM); 457 } 458 /* set which FIFO is opened */ 459 sc->sc_fifo_open[USB_FIFO_TX] = fifo; 460 } 461 sc->sc_fflags |= fflags & (FREAD | FWRITE); 462 return (0); 463 } 464 465 static void 466 ulpt_close(struct usb_fifo *fifo, int fflags) 467 { 468 struct ulpt_softc *sc = usb_fifo_softc(fifo); 469 470 sc->sc_fflags &= ~(fflags & (FREAD | FWRITE)); 471 472 if (fflags & (FREAD | FWRITE)) { 473 usb_fifo_free_buffer(fifo); 474 } 475 } 476 477 static int 478 ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, 479 int fflags) 480 { 481 return (ENODEV); 482 } 483 484 static const STRUCT_USB_HOST_ID ulpt_devs[] = { 485 /* Uni-directional USB printer */ 486 {USB_IFACE_CLASS(UICLASS_PRINTER), 487 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 488 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)}, 489 490 /* Bi-directional USB printer */ 491 {USB_IFACE_CLASS(UICLASS_PRINTER), 492 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 493 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 494 495 /* 1284 USB printer */ 496 {USB_IFACE_CLASS(UICLASS_PRINTER), 497 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 498 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)}, 499 500 /* Epson printer */ 501 {USB_VENDOR(USB_VENDOR_EPSON), 502 USB_PRODUCT(USB_PRODUCT_EPSON_TMU220B), 503 USB_IFACE_CLASS(UICLASS_VENDOR), 504 USB_IFACE_SUBCLASS(UISUBCLASS_VENDOR), 505 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 506 }; 507 508 static int 509 ulpt_probe(device_t dev) 510 { 511 struct usb_attach_arg *uaa = device_get_ivars(dev); 512 int error; 513 514 DPRINTFN(11, "\n"); 515 516 if (uaa->usb_mode != USB_MODE_HOST) 517 return (ENXIO); 518 519 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); 520 if (error) 521 return (error); 522 523 return (BUS_PROBE_GENERIC); 524 } 525 526 static int 527 ulpt_attach(device_t dev) 528 { 529 struct usb_attach_arg *uaa = device_get_ivars(dev); 530 struct ulpt_softc *sc = device_get_softc(dev); 531 struct usb_interface_descriptor *id; 532 int unit = device_get_unit(dev); 533 int error; 534 uint8_t iface_index = uaa->info.bIfaceIndex; 535 uint8_t alt_index; 536 537 DPRINTFN(11, "sc=%p\n", sc); 538 539 sc->sc_dev = dev; 540 sc->sc_udev = uaa->device; 541 542 device_set_usb_desc(dev); 543 544 mtx_init(&sc->sc_mtx, "ulpt lock", NULL, MTX_DEF | MTX_RECURSE); 545 546 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 547 548 /* search through all the descriptors looking for bidir mode */ 549 550 id = usbd_get_interface_descriptor(uaa->iface); 551 alt_index = 0xFF; 552 while (1) { 553 if (id == NULL) { 554 break; 555 } 556 if ((id->bDescriptorType == UDESC_INTERFACE) && 557 (id->bLength >= sizeof(*id))) { 558 if (id->bInterfaceNumber != uaa->info.bIfaceNum) { 559 break; 560 } else { 561 alt_index++; 562 if ((id->bInterfaceClass == UICLASS_PRINTER || 563 id->bInterfaceClass == UICLASS_VENDOR) && 564 (id->bInterfaceSubClass == UISUBCLASS_PRINTER || 565 id->bInterfaceSubClass == UISUBCLASS_VENDOR) && 566 (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { 567 goto found; 568 } 569 } 570 } 571 id = (void *)usb_desc_foreach( 572 usbd_get_config_descriptor(uaa->device), (void *)id); 573 } 574 goto detach; 575 576 found: 577 578 DPRINTF("setting alternate " 579 "config number: %d\n", alt_index); 580 581 if (alt_index) { 582 error = usbd_set_alt_interface_index 583 (uaa->device, iface_index, alt_index); 584 585 if (error) { 586 DPRINTF("could not set alternate " 587 "config, error=%s\n", usbd_errstr(error)); 588 goto detach; 589 } 590 } 591 sc->sc_iface_no = id->bInterfaceNumber; 592 593 error = usbd_transfer_setup(uaa->device, &iface_index, 594 sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, 595 sc, &sc->sc_mtx); 596 if (error) { 597 DPRINTF("error=%s\n", usbd_errstr(error)); 598 goto detach; 599 } 600 device_printf(sc->sc_dev, "using bi-directional mode\n"); 601 602 #if 0 603 /* 604 * This code is disabled because for some mysterious reason it causes 605 * printing not to work. But only sometimes, and mostly with 606 * UHCI and less often with OHCI. *sigh* 607 */ 608 { 609 struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); 610 struct usb_device_request req; 611 int len, alen; 612 613 req.bmRequestType = UT_READ_CLASS_INTERFACE; 614 req.bRequest = UR_GET_DEVICE_ID; 615 USETW(req.wValue, cd->bConfigurationValue); 616 USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); 617 USETW(req.wLength, sizeof devinfo - 1); 618 error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, 619 &alen, USB_DEFAULT_TIMEOUT); 620 if (error) { 621 device_printf(sc->sc_dev, "cannot get device id\n"); 622 } else if (alen <= 2) { 623 device_printf(sc->sc_dev, "empty device id, no " 624 "printer connected?\n"); 625 } else { 626 /* devinfo now contains an IEEE-1284 device ID */ 627 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); 628 if (len > sizeof devinfo - 3) 629 len = sizeof devinfo - 3; 630 devinfo[len] = 0; 631 printf("%s: device id <", device_get_nameunit(sc->sc_dev)); 632 ieee1284_print_id(devinfo + 2); 633 printf(">\n"); 634 } 635 } 636 #endif 637 638 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 639 &ulpt_fifo_methods, &sc->sc_fifo, 640 unit, -1, uaa->info.bIfaceIndex, 641 UID_ROOT, GID_OPERATOR, 0644); 642 if (error) { 643 goto detach; 644 } 645 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 646 &unlpt_fifo_methods, &sc->sc_fifo_noreset, 647 unit, -1, uaa->info.bIfaceIndex, 648 UID_ROOT, GID_OPERATOR, 0644); 649 if (error) { 650 goto detach; 651 } 652 /* start reading of status */ 653 654 mtx_lock(&sc->sc_mtx); 655 ulpt_watchdog(sc); 656 mtx_unlock(&sc->sc_mtx); 657 return (0); 658 659 detach: 660 ulpt_detach(dev); 661 return (ENOMEM); 662 } 663 664 static int 665 ulpt_detach(device_t dev) 666 { 667 struct ulpt_softc *sc = device_get_softc(dev); 668 669 DPRINTF("sc=%p\n", sc); 670 671 usb_fifo_detach(&sc->sc_fifo); 672 usb_fifo_detach(&sc->sc_fifo_noreset); 673 674 mtx_lock(&sc->sc_mtx); 675 usb_callout_stop(&sc->sc_watchdog); 676 mtx_unlock(&sc->sc_mtx); 677 678 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); 679 usb_callout_drain(&sc->sc_watchdog); 680 mtx_destroy(&sc->sc_mtx); 681 682 return (0); 683 } 684 685 #if 0 686 /* XXX This does not belong here. */ 687 688 /* 689 * Compare two strings until the second ends. 690 */ 691 692 static uint8_t 693 ieee1284_compare(const char *a, const char *b) 694 { 695 while (1) { 696 if (*b == 0) { 697 break; 698 } 699 if (*a != *b) { 700 return 1; 701 } 702 b++; 703 a++; 704 } 705 return 0; 706 } 707 708 /* 709 * Print select parts of an IEEE 1284 device ID. 710 */ 711 void 712 ieee1284_print_id(char *str) 713 { 714 char *p, *q; 715 716 for (p = str - 1; p; p = strchr(p, ';')) { 717 p++; /* skip ';' */ 718 if (ieee1284_compare(p, "MFG:") == 0 || 719 ieee1284_compare(p, "MANUFACTURER:") == 0 || 720 ieee1284_compare(p, "MDL:") == 0 || 721 ieee1284_compare(p, "MODEL:") == 0) { 722 q = strchr(p, ';'); 723 if (q) 724 printf("%.*s", (int)(q - p + 1), p); 725 } 726 } 727 } 728 729 #endif 730 731 static void 732 ulpt_watchdog(void *arg) 733 { 734 struct ulpt_softc *sc = arg; 735 736 mtx_assert(&sc->sc_mtx, MA_OWNED); 737 738 /* 739 * Only read status while the device is not opened, due to 740 * possible hardware or firmware bug in some printers. 741 */ 742 if (sc->sc_fflags == 0) 743 usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); 744 745 usb_callout_reset(&sc->sc_watchdog, 746 hz, &ulpt_watchdog, sc); 747 } 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, NULL, NULL); 763 MODULE_DEPEND(ulpt, usb, 1, 1, 1); 764 MODULE_VERSION(ulpt, 1); 765 USB_PNP_HOST_INFO(ulpt_devs); 766