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