1 #include <sys/cdefs.h> 2 /* $NetBSD: ulpt.c,v 1.60 2003/10/04 21:19:50 augustss Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-2-Clause 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 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /* 37 * Printer Class spec: http://www.usb.org/developers/data/devclass/usbprint109.PDF 38 * Printer Class spec: http://www.usb.org/developers/devclass_docs/usbprint11.pdf 39 */ 40 41 #include <sys/stdint.h> 42 #include <sys/stddef.h> 43 #include <sys/param.h> 44 #include <sys/queue.h> 45 #include <sys/types.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/bus.h> 49 #include <sys/module.h> 50 #include <sys/lock.h> 51 #include <sys/mutex.h> 52 #include <sys/condvar.h> 53 #include <sys/sysctl.h> 54 #include <sys/sx.h> 55 #include <sys/unistd.h> 56 #include <sys/callout.h> 57 #include <sys/malloc.h> 58 #include <sys/priv.h> 59 #include <sys/syslog.h> 60 #include <sys/selinfo.h> 61 #include <sys/conf.h> 62 #include <sys/fcntl.h> 63 64 #include <dev/usb/usb.h> 65 #include <dev/usb/usbdi.h> 66 #include <dev/usb/usbdi_util.h> 67 #include <dev/usb/usbhid.h> 68 #include "usbdevs.h" 69 70 #define USB_DEBUG_VAR ulpt_debug 71 #include <dev/usb/usb_debug.h> 72 #include <dev/usb/usb_process.h> 73 74 #ifdef USB_DEBUG 75 static int ulpt_debug = 0; 76 77 static SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 78 "USB ulpt"); 79 SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RWTUN, 80 &ulpt_debug, 0, "Debug level"); 81 #endif 82 83 #define ULPT_BSIZE (1<<15) /* bytes */ 84 #define ULPT_IFQ_MAXLEN 2 /* units */ 85 86 #define UR_GET_DEVICE_ID 0x00 87 #define UR_GET_PORT_STATUS 0x01 88 #define UR_SOFT_RESET 0x02 89 90 #define LPS_NERR 0x08 /* printer no error */ 91 #define LPS_SELECT 0x10 /* printer selected */ 92 #define LPS_NOPAPER 0x20 /* printer out of paper */ 93 #define LPS_INVERT (LPS_SELECT|LPS_NERR) 94 #define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER) 95 96 enum { 97 ULPT_BULK_DT_WR, 98 ULPT_BULK_DT_RD, 99 ULPT_INTR_DT_RD, 100 ULPT_N_TRANSFER, 101 }; 102 103 struct ulpt_softc { 104 struct usb_fifo_sc sc_fifo; 105 struct usb_fifo_sc sc_fifo_noreset; 106 struct mtx sc_mtx; 107 struct usb_callout sc_watchdog; 108 109 device_t sc_dev; 110 struct usb_device *sc_udev; 111 struct usb_fifo *sc_fifo_open[2]; 112 struct usb_xfer *sc_xfer[ULPT_N_TRANSFER]; 113 114 int sc_fflags; /* current open flags, FREAD and 115 * FWRITE */ 116 uint8_t sc_iface_no; 117 uint8_t sc_last_status; 118 uint8_t sc_zlps; /* number of consequtive zero length 119 * packets received */ 120 }; 121 122 /* prototypes */ 123 124 static device_probe_t ulpt_probe; 125 static device_attach_t ulpt_attach; 126 static device_detach_t ulpt_detach; 127 128 static usb_callback_t ulpt_write_callback; 129 static usb_callback_t ulpt_read_callback; 130 static usb_callback_t ulpt_status_callback; 131 132 static void ulpt_reset(struct ulpt_softc *); 133 static void ulpt_watchdog(void *); 134 135 static usb_fifo_close_t ulpt_close; 136 static usb_fifo_cmd_t ulpt_start_read; 137 static usb_fifo_cmd_t ulpt_start_write; 138 static usb_fifo_cmd_t ulpt_stop_read; 139 static usb_fifo_cmd_t ulpt_stop_write; 140 static usb_fifo_ioctl_t ulpt_ioctl; 141 static usb_fifo_open_t ulpt_open; 142 static usb_fifo_open_t unlpt_open; 143 144 static struct usb_fifo_methods ulpt_fifo_methods = { 145 .f_close = &ulpt_close, 146 .f_ioctl = &ulpt_ioctl, 147 .f_open = &ulpt_open, 148 .f_start_read = &ulpt_start_read, 149 .f_start_write = &ulpt_start_write, 150 .f_stop_read = &ulpt_stop_read, 151 .f_stop_write = &ulpt_stop_write, 152 .basename[0] = "ulpt", 153 }; 154 155 static struct usb_fifo_methods unlpt_fifo_methods = { 156 .f_close = &ulpt_close, 157 .f_ioctl = &ulpt_ioctl, 158 .f_open = &unlpt_open, 159 .f_start_read = &ulpt_start_read, 160 .f_start_write = &ulpt_start_write, 161 .f_stop_read = &ulpt_stop_read, 162 .f_stop_write = &ulpt_stop_write, 163 .basename[0] = "unlpt", 164 }; 165 166 static void 167 ulpt_reset(struct ulpt_softc *sc) 168 { 169 struct usb_device_request req; 170 171 DPRINTFN(2, "\n"); 172 173 req.bRequest = UR_SOFT_RESET; 174 USETW(req.wValue, 0); 175 USETW(req.wIndex, sc->sc_iface_no); 176 USETW(req.wLength, 0); 177 178 /* 179 * There was a mistake in the USB printer 1.0 spec that gave the 180 * request type as UT_WRITE_CLASS_OTHER; it should have been 181 * UT_WRITE_CLASS_INTERFACE. Many printers use the old one, 182 * so we try both. 183 */ 184 185 mtx_lock(&sc->sc_mtx); 186 req.bmRequestType = UT_WRITE_CLASS_OTHER; 187 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 188 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.0 */ 189 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 190 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 191 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.1 */ 192 /* ignore error */ 193 } 194 } 195 mtx_unlock(&sc->sc_mtx); 196 } 197 198 static void 199 ulpt_write_callback(struct usb_xfer *xfer, usb_error_t error) 200 { 201 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 202 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_TX]; 203 struct usb_page_cache *pc; 204 int actlen, max; 205 206 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 207 208 if (f == NULL) { 209 /* should not happen */ 210 DPRINTF("no FIFO\n"); 211 return; 212 } 213 DPRINTF("state=0x%x actlen=%d\n", USB_GET_STATE(xfer), actlen); 214 215 switch (USB_GET_STATE(xfer)) { 216 case USB_ST_TRANSFERRED: 217 case USB_ST_SETUP: 218 tr_setup: 219 pc = usbd_xfer_get_frame(xfer, 0); 220 max = usbd_xfer_max_len(xfer); 221 if (usb_fifo_get_data(f, pc, 0, max, &actlen, 0)) { 222 usbd_xfer_set_frame_len(xfer, 0, actlen); 223 usbd_transfer_submit(xfer); 224 } 225 break; 226 227 default: /* Error */ 228 if (error != USB_ERR_CANCELLED) { 229 /* try to clear stall first */ 230 usbd_xfer_set_stall(xfer); 231 goto tr_setup; 232 } 233 break; 234 } 235 } 236 237 static void 238 ulpt_read_callback(struct usb_xfer *xfer, usb_error_t error) 239 { 240 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 241 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_RX]; 242 struct usb_page_cache *pc; 243 int actlen; 244 245 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 246 247 if (f == NULL) { 248 /* should not happen */ 249 DPRINTF("no FIFO\n"); 250 return; 251 } 252 DPRINTF("state=0x%x\n", USB_GET_STATE(xfer)); 253 254 switch (USB_GET_STATE(xfer)) { 255 case USB_ST_TRANSFERRED: 256 257 if (actlen == 0) { 258 if (sc->sc_zlps == 4) { 259 /* enable BULK throttle */ 260 usbd_xfer_set_interval(xfer, 500); /* ms */ 261 } else { 262 sc->sc_zlps++; 263 } 264 } else { 265 /* disable BULK throttle */ 266 267 usbd_xfer_set_interval(xfer, 0); 268 sc->sc_zlps = 0; 269 } 270 271 pc = usbd_xfer_get_frame(xfer, 0); 272 usb_fifo_put_data(f, pc, 0, actlen, 1); 273 274 case USB_ST_SETUP: 275 tr_setup: 276 if (usb_fifo_put_bytes_max(f) != 0) { 277 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 278 usbd_transfer_submit(xfer); 279 } 280 break; 281 282 default: /* Error */ 283 /* disable BULK throttle */ 284 usbd_xfer_set_interval(xfer, 0); 285 sc->sc_zlps = 0; 286 287 if (error != USB_ERR_CANCELLED) { 288 /* try to clear stall first */ 289 usbd_xfer_set_stall(xfer); 290 goto tr_setup; 291 } 292 break; 293 } 294 } 295 296 static void 297 ulpt_status_callback(struct usb_xfer *xfer, usb_error_t error) 298 { 299 struct ulpt_softc *sc = usbd_xfer_softc(xfer); 300 struct usb_device_request req; 301 struct usb_page_cache *pc; 302 uint8_t cur_status; 303 uint8_t new_status; 304 305 switch (USB_GET_STATE(xfer)) { 306 case USB_ST_TRANSFERRED: 307 308 pc = usbd_xfer_get_frame(xfer, 1); 309 usbd_copy_out(pc, 0, &cur_status, 1); 310 311 cur_status = (cur_status ^ LPS_INVERT) & LPS_MASK; 312 new_status = cur_status & ~sc->sc_last_status; 313 sc->sc_last_status = cur_status; 314 315 if (new_status & LPS_SELECT) 316 log(LOG_NOTICE, "%s: offline\n", 317 device_get_nameunit(sc->sc_dev)); 318 else if (new_status & LPS_NOPAPER) 319 log(LOG_NOTICE, "%s: out of paper\n", 320 device_get_nameunit(sc->sc_dev)); 321 else if (new_status & LPS_NERR) 322 log(LOG_NOTICE, "%s: output error\n", 323 device_get_nameunit(sc->sc_dev)); 324 break; 325 326 case USB_ST_SETUP: 327 req.bmRequestType = UT_READ_CLASS_INTERFACE; 328 req.bRequest = UR_GET_PORT_STATUS; 329 USETW(req.wValue, 0); 330 req.wIndex[0] = sc->sc_iface_no; 331 req.wIndex[1] = 0; 332 USETW(req.wLength, 1); 333 334 pc = usbd_xfer_get_frame(xfer, 0); 335 usbd_copy_in(pc, 0, &req, sizeof(req)); 336 337 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 338 usbd_xfer_set_frame_len(xfer, 1, 1); 339 usbd_xfer_set_frames(xfer, 2); 340 usbd_transfer_submit(xfer); 341 break; 342 343 default: /* Error */ 344 DPRINTF("error=%s\n", usbd_errstr(error)); 345 if (error != USB_ERR_CANCELLED) { 346 /* wait for next watchdog timeout */ 347 } 348 break; 349 } 350 } 351 352 static const struct usb_config ulpt_config[ULPT_N_TRANSFER] = { 353 [ULPT_BULK_DT_WR] = { 354 .type = UE_BULK, 355 .endpoint = UE_ADDR_ANY, 356 .direction = UE_DIR_OUT, 357 .bufsize = ULPT_BSIZE, 358 .flags = {.pipe_bof = 1,.proxy_buffer = 1}, 359 .callback = &ulpt_write_callback, 360 }, 361 362 [ULPT_BULK_DT_RD] = { 363 .type = UE_BULK, 364 .endpoint = UE_ADDR_ANY, 365 .direction = UE_DIR_IN, 366 .bufsize = ULPT_BSIZE, 367 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1}, 368 .callback = &ulpt_read_callback, 369 }, 370 371 [ULPT_INTR_DT_RD] = { 372 .type = UE_CONTROL, 373 .endpoint = 0x00, /* Control pipe */ 374 .direction = UE_DIR_ANY, 375 .bufsize = sizeof(struct usb_device_request) + 1, 376 .callback = &ulpt_status_callback, 377 .timeout = 1000, /* 1 second */ 378 }, 379 }; 380 381 static void 382 ulpt_start_read(struct usb_fifo *fifo) 383 { 384 struct ulpt_softc *sc = usb_fifo_softc(fifo); 385 386 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_RD]); 387 } 388 389 static void 390 ulpt_stop_read(struct usb_fifo *fifo) 391 { 392 struct ulpt_softc *sc = usb_fifo_softc(fifo); 393 394 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_RD]); 395 } 396 397 static void 398 ulpt_start_write(struct usb_fifo *fifo) 399 { 400 struct ulpt_softc *sc = usb_fifo_softc(fifo); 401 402 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_WR]); 403 } 404 405 static void 406 ulpt_stop_write(struct usb_fifo *fifo) 407 { 408 struct ulpt_softc *sc = usb_fifo_softc(fifo); 409 410 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_WR]); 411 } 412 413 static int 414 ulpt_open(struct usb_fifo *fifo, int fflags) 415 { 416 struct ulpt_softc *sc = usb_fifo_softc(fifo); 417 418 /* we assume that open is a serial process */ 419 420 if (sc->sc_fflags == 0) { 421 /* reset USB parallel port */ 422 423 ulpt_reset(sc); 424 } 425 return (unlpt_open(fifo, fflags)); 426 } 427 428 static int 429 unlpt_open(struct usb_fifo *fifo, int fflags) 430 { 431 struct ulpt_softc *sc = usb_fifo_softc(fifo); 432 433 if (sc->sc_fflags & fflags) { 434 return (EBUSY); 435 } 436 if (fflags & FREAD) { 437 /* clear stall first */ 438 mtx_lock(&sc->sc_mtx); 439 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]); 440 mtx_unlock(&sc->sc_mtx); 441 if (usb_fifo_alloc_buffer(fifo, 442 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]), 443 ULPT_IFQ_MAXLEN)) { 444 return (ENOMEM); 445 } 446 /* set which FIFO is opened */ 447 sc->sc_fifo_open[USB_FIFO_RX] = fifo; 448 } 449 if (fflags & FWRITE) { 450 /* clear stall first */ 451 mtx_lock(&sc->sc_mtx); 452 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]); 453 mtx_unlock(&sc->sc_mtx); 454 if (usb_fifo_alloc_buffer(fifo, 455 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]), 456 ULPT_IFQ_MAXLEN)) { 457 return (ENOMEM); 458 } 459 /* set which FIFO is opened */ 460 sc->sc_fifo_open[USB_FIFO_TX] = fifo; 461 } 462 sc->sc_fflags |= fflags & (FREAD | FWRITE); 463 return (0); 464 } 465 466 static void 467 ulpt_close(struct usb_fifo *fifo, int fflags) 468 { 469 struct ulpt_softc *sc = usb_fifo_softc(fifo); 470 471 sc->sc_fflags &= ~(fflags & (FREAD | FWRITE)); 472 473 if (fflags & (FREAD | FWRITE)) { 474 usb_fifo_free_buffer(fifo); 475 } 476 } 477 478 static int 479 ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, 480 int fflags) 481 { 482 return (ENODEV); 483 } 484 485 static const STRUCT_USB_HOST_ID ulpt_devs[] = { 486 /* Uni-directional USB printer */ 487 {USB_IFACE_CLASS(UICLASS_PRINTER), 488 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 489 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)}, 490 491 /* Bi-directional USB printer */ 492 {USB_IFACE_CLASS(UICLASS_PRINTER), 493 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 494 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 495 496 /* 1284 USB printer */ 497 {USB_IFACE_CLASS(UICLASS_PRINTER), 498 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 499 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)}, 500 501 /* Epson printer */ 502 {USB_VENDOR(USB_VENDOR_EPSON), 503 USB_PRODUCT(USB_PRODUCT_EPSON_TMU220B), 504 USB_IFACE_CLASS(UICLASS_VENDOR), 505 USB_IFACE_SUBCLASS(UISUBCLASS_VENDOR), 506 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 507 }; 508 509 static int 510 ulpt_probe(device_t dev) 511 { 512 struct usb_attach_arg *uaa = device_get_ivars(dev); 513 int error; 514 515 DPRINTFN(11, "\n"); 516 517 if (uaa->usb_mode != USB_MODE_HOST) 518 return (ENXIO); 519 520 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); 521 if (error) 522 return (error); 523 524 return (BUS_PROBE_GENERIC); 525 } 526 527 static int 528 ulpt_attach(device_t dev) 529 { 530 struct usb_attach_arg *uaa = device_get_ivars(dev); 531 struct ulpt_softc *sc = device_get_softc(dev); 532 struct usb_interface_descriptor *id; 533 int unit = device_get_unit(dev); 534 int error; 535 uint8_t iface_index = uaa->info.bIfaceIndex; 536 uint8_t alt_index; 537 538 DPRINTFN(11, "sc=%p\n", sc); 539 540 sc->sc_dev = dev; 541 sc->sc_udev = uaa->device; 542 543 device_set_usb_desc(dev); 544 545 mtx_init(&sc->sc_mtx, "ulpt lock", NULL, MTX_DEF | MTX_RECURSE); 546 547 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 548 549 /* search through all the descriptors looking for bidir mode */ 550 551 id = usbd_get_interface_descriptor(uaa->iface); 552 alt_index = 0xFF; 553 while (1) { 554 if (id == NULL) { 555 break; 556 } 557 if ((id->bDescriptorType == UDESC_INTERFACE) && 558 (id->bLength >= sizeof(*id))) { 559 if (id->bInterfaceNumber != uaa->info.bIfaceNum) { 560 break; 561 } else { 562 alt_index++; 563 if ((id->bInterfaceClass == UICLASS_PRINTER || 564 id->bInterfaceClass == UICLASS_VENDOR) && 565 (id->bInterfaceSubClass == UISUBCLASS_PRINTER || 566 id->bInterfaceSubClass == UISUBCLASS_VENDOR) && 567 (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { 568 goto found; 569 } 570 } 571 } 572 id = (void *)usb_desc_foreach( 573 usbd_get_config_descriptor(uaa->device), (void *)id); 574 } 575 goto detach; 576 577 found: 578 579 DPRINTF("setting alternate " 580 "config number: %d\n", alt_index); 581 582 if (alt_index) { 583 error = usbd_set_alt_interface_index 584 (uaa->device, iface_index, alt_index); 585 586 if (error) { 587 DPRINTF("could not set alternate " 588 "config, error=%s\n", usbd_errstr(error)); 589 goto detach; 590 } 591 } 592 sc->sc_iface_no = id->bInterfaceNumber; 593 594 error = usbd_transfer_setup(uaa->device, &iface_index, 595 sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, 596 sc, &sc->sc_mtx); 597 if (error) { 598 DPRINTF("error=%s\n", usbd_errstr(error)); 599 goto detach; 600 } 601 device_printf(sc->sc_dev, "using bi-directional mode\n"); 602 603 #if 0 604 /* 605 * This code is disabled because for some mysterious reason it causes 606 * printing not to work. But only sometimes, and mostly with 607 * UHCI and less often with OHCI. *sigh* 608 */ 609 { 610 struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); 611 struct usb_device_request req; 612 int len, alen; 613 614 req.bmRequestType = UT_READ_CLASS_INTERFACE; 615 req.bRequest = UR_GET_DEVICE_ID; 616 USETW(req.wValue, cd->bConfigurationValue); 617 USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); 618 USETW(req.wLength, sizeof devinfo - 1); 619 error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, 620 &alen, USB_DEFAULT_TIMEOUT); 621 if (error) { 622 device_printf(sc->sc_dev, "cannot get device id\n"); 623 } else if (alen <= 2) { 624 device_printf(sc->sc_dev, "empty device id, no " 625 "printer connected?\n"); 626 } else { 627 /* devinfo now contains an IEEE-1284 device ID */ 628 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); 629 if (len > sizeof devinfo - 3) 630 len = sizeof devinfo - 3; 631 devinfo[len] = 0; 632 printf("%s: device id <", device_get_nameunit(sc->sc_dev)); 633 ieee1284_print_id(devinfo + 2); 634 printf(">\n"); 635 } 636 } 637 #endif 638 639 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 640 &ulpt_fifo_methods, &sc->sc_fifo, 641 unit, -1, uaa->info.bIfaceIndex, 642 UID_ROOT, GID_OPERATOR, 0644); 643 if (error) { 644 goto detach; 645 } 646 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 647 &unlpt_fifo_methods, &sc->sc_fifo_noreset, 648 unit, -1, uaa->info.bIfaceIndex, 649 UID_ROOT, GID_OPERATOR, 0644); 650 if (error) { 651 goto detach; 652 } 653 /* start reading of status */ 654 655 mtx_lock(&sc->sc_mtx); 656 ulpt_watchdog(sc); 657 mtx_unlock(&sc->sc_mtx); 658 return (0); 659 660 detach: 661 ulpt_detach(dev); 662 return (ENOMEM); 663 } 664 665 static int 666 ulpt_detach(device_t dev) 667 { 668 struct ulpt_softc *sc = device_get_softc(dev); 669 670 DPRINTF("sc=%p\n", sc); 671 672 usb_fifo_detach(&sc->sc_fifo); 673 usb_fifo_detach(&sc->sc_fifo_noreset); 674 675 mtx_lock(&sc->sc_mtx); 676 usb_callout_stop(&sc->sc_watchdog); 677 mtx_unlock(&sc->sc_mtx); 678 679 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); 680 usb_callout_drain(&sc->sc_watchdog); 681 mtx_destroy(&sc->sc_mtx); 682 683 return (0); 684 } 685 686 #if 0 687 /* XXX This does not belong here. */ 688 689 /* 690 * Compare two strings until the second ends. 691 */ 692 693 static uint8_t 694 ieee1284_compare(const char *a, const char *b) 695 { 696 while (1) { 697 if (*b == 0) { 698 break; 699 } 700 if (*a != *b) { 701 return 1; 702 } 703 b++; 704 a++; 705 } 706 return 0; 707 } 708 709 /* 710 * Print select parts of an IEEE 1284 device ID. 711 */ 712 void 713 ieee1284_print_id(char *str) 714 { 715 char *p, *q; 716 717 for (p = str - 1; p; p = strchr(p, ';')) { 718 p++; /* skip ';' */ 719 if (ieee1284_compare(p, "MFG:") == 0 || 720 ieee1284_compare(p, "MANUFACTURER:") == 0 || 721 ieee1284_compare(p, "MDL:") == 0 || 722 ieee1284_compare(p, "MODEL:") == 0) { 723 q = strchr(p, ';'); 724 if (q) 725 printf("%.*s", (int)(q - p + 1), p); 726 } 727 } 728 } 729 730 #endif 731 732 static void 733 ulpt_watchdog(void *arg) 734 { 735 struct ulpt_softc *sc = arg; 736 737 mtx_assert(&sc->sc_mtx, MA_OWNED); 738 739 /* 740 * Only read status while the device is not opened, due to 741 * possible hardware or firmware bug in some printers. 742 */ 743 if (sc->sc_fflags == 0) 744 usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); 745 746 usb_callout_reset(&sc->sc_watchdog, 747 hz, &ulpt_watchdog, sc); 748 } 749 750 static device_method_t ulpt_methods[] = { 751 DEVMETHOD(device_probe, ulpt_probe), 752 DEVMETHOD(device_attach, ulpt_attach), 753 DEVMETHOD(device_detach, ulpt_detach), 754 DEVMETHOD_END 755 }; 756 757 static driver_t ulpt_driver = { 758 .name = "ulpt", 759 .methods = ulpt_methods, 760 .size = sizeof(struct ulpt_softc), 761 }; 762 763 DRIVER_MODULE(ulpt, uhub, ulpt_driver, NULL, NULL); 764 MODULE_DEPEND(ulpt, usb, 1, 1, 1); 765 MODULE_VERSION(ulpt, 1); 766 USB_PNP_HOST_INFO(ulpt_devs); 767