ulpt.c revision 256281
1#include <sys/cdefs.h> 2__FBSDID("$FreeBSD: stable/10/sys/dev/usb/serial/ulpt.c 239180 2012-08-10 15:29:41Z hselasky $"); 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 * 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 75static int ulpt_debug = 0; 76 77static SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW, 0, "USB ulpt"); 78SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RW, 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 95enum { 96 ULPT_BULK_DT_WR, 97 ULPT_BULK_DT_RD, 98 ULPT_INTR_DT_RD, 99 ULPT_N_TRANSFER, 100}; 101 102struct 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 123static device_probe_t ulpt_probe; 124static device_attach_t ulpt_attach; 125static device_detach_t ulpt_detach; 126 127static usb_callback_t ulpt_write_callback; 128static usb_callback_t ulpt_read_callback; 129static usb_callback_t ulpt_status_callback; 130 131static void ulpt_reset(struct ulpt_softc *); 132static void ulpt_watchdog(void *); 133 134static usb_fifo_close_t ulpt_close; 135static usb_fifo_cmd_t ulpt_start_read; 136static usb_fifo_cmd_t ulpt_start_write; 137static usb_fifo_cmd_t ulpt_stop_read; 138static usb_fifo_cmd_t ulpt_stop_write; 139static usb_fifo_ioctl_t ulpt_ioctl; 140static usb_fifo_open_t ulpt_open; 141static usb_fifo_open_t unlpt_open; 142 143static 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 154static 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 165static void 166ulpt_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 197static void 198ulpt_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: 217tr_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 236static void 237ulpt_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) { 257 258 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: 275tr_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 296static void 297ulpt_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 352static 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 381static void 382ulpt_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 389static void 390ulpt_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 397static void 398ulpt_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 405static void 406ulpt_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 413static int 414ulpt_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) { 421 422 /* reset USB paralell port */ 423 424 ulpt_reset(sc); 425 } 426 return (unlpt_open(fifo, fflags)); 427} 428 429static int 430unlpt_open(struct usb_fifo *fifo, int fflags) 431{ 432 struct ulpt_softc *sc = usb_fifo_softc(fifo); 433 434 if (sc->sc_fflags & fflags) { 435 return (EBUSY); 436 } 437 if (fflags & FREAD) { 438 /* clear stall first */ 439 mtx_lock(&sc->sc_mtx); 440 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]); 441 mtx_unlock(&sc->sc_mtx); 442 if (usb_fifo_alloc_buffer(fifo, 443 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]), 444 ULPT_IFQ_MAXLEN)) { 445 return (ENOMEM); 446 } 447 /* set which FIFO is opened */ 448 sc->sc_fifo_open[USB_FIFO_RX] = fifo; 449 } 450 if (fflags & FWRITE) { 451 /* clear stall first */ 452 mtx_lock(&sc->sc_mtx); 453 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]); 454 mtx_unlock(&sc->sc_mtx); 455 if (usb_fifo_alloc_buffer(fifo, 456 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]), 457 ULPT_IFQ_MAXLEN)) { 458 return (ENOMEM); 459 } 460 /* set which FIFO is opened */ 461 sc->sc_fifo_open[USB_FIFO_TX] = fifo; 462 } 463 sc->sc_fflags |= fflags & (FREAD | FWRITE); 464 return (0); 465} 466 467static void 468ulpt_close(struct usb_fifo *fifo, int fflags) 469{ 470 struct ulpt_softc *sc = usb_fifo_softc(fifo); 471 472 sc->sc_fflags &= ~(fflags & (FREAD | FWRITE)); 473 474 if (fflags & (FREAD | FWRITE)) { 475 usb_fifo_free_buffer(fifo); 476 } 477} 478 479static int 480ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data, 481 int fflags) 482{ 483 return (ENODEV); 484} 485 486static const STRUCT_USB_HOST_ID ulpt_devs[] = { 487 /* Uni-directional USB printer */ 488 {USB_IFACE_CLASS(UICLASS_PRINTER), 489 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 490 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)}, 491 492 /* Bi-directional USB printer */ 493 {USB_IFACE_CLASS(UICLASS_PRINTER), 494 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 495 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)}, 496 497 /* 1284 USB printer */ 498 {USB_IFACE_CLASS(UICLASS_PRINTER), 499 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER), 500 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)}, 501}; 502 503static int 504ulpt_probe(device_t dev) 505{ 506 struct usb_attach_arg *uaa = device_get_ivars(dev); 507 int error; 508 509 DPRINTFN(11, "\n"); 510 511 if (uaa->usb_mode != USB_MODE_HOST) 512 return (ENXIO); 513 514 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa); 515 if (error) 516 return (error); 517 518 return (BUS_PROBE_GENERIC); 519} 520 521static int 522ulpt_attach(device_t dev) 523{ 524 struct usb_attach_arg *uaa = device_get_ivars(dev); 525 struct ulpt_softc *sc = device_get_softc(dev); 526 struct usb_interface_descriptor *id; 527 int unit = device_get_unit(dev); 528 int error; 529 uint8_t iface_index = uaa->info.bIfaceIndex; 530 uint8_t alt_index; 531 532 DPRINTFN(11, "sc=%p\n", sc); 533 534 sc->sc_dev = dev; 535 sc->sc_udev = uaa->device; 536 537 device_set_usb_desc(dev); 538 539 mtx_init(&sc->sc_mtx, "ulpt lock", NULL, MTX_DEF | MTX_RECURSE); 540 541 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 542 543 /* search through all the descriptors looking for bidir mode */ 544 545 id = usbd_get_interface_descriptor(uaa->iface); 546 alt_index = 0xFF; 547 while (1) { 548 if (id == NULL) { 549 break; 550 } 551 if ((id->bDescriptorType == UDESC_INTERFACE) && 552 (id->bLength >= sizeof(*id))) { 553 if (id->bInterfaceNumber != uaa->info.bIfaceNum) { 554 break; 555 } else { 556 alt_index++; 557 if ((id->bInterfaceClass == UICLASS_PRINTER) && 558 (id->bInterfaceSubClass == UISUBCLASS_PRINTER) && 559 (id->bInterfaceProtocol == UIPROTO_PRINTER_BI)) { 560 goto found; 561 } 562 } 563 } 564 id = (void *)usb_desc_foreach( 565 usbd_get_config_descriptor(uaa->device), (void *)id); 566 } 567 goto detach; 568 569found: 570 571 DPRINTF("setting alternate " 572 "config number: %d\n", alt_index); 573 574 if (alt_index) { 575 576 error = usbd_set_alt_interface_index 577 (uaa->device, iface_index, alt_index); 578 579 if (error) { 580 DPRINTF("could not set alternate " 581 "config, error=%s\n", usbd_errstr(error)); 582 goto detach; 583 } 584 } 585 sc->sc_iface_no = id->bInterfaceNumber; 586 587 error = usbd_transfer_setup(uaa->device, &iface_index, 588 sc->sc_xfer, ulpt_config, ULPT_N_TRANSFER, 589 sc, &sc->sc_mtx); 590 if (error) { 591 DPRINTF("error=%s\n", usbd_errstr(error)); 592 goto detach; 593 } 594 device_printf(sc->sc_dev, "using bi-directional mode\n"); 595 596#if 0 597/* 598 * This code is disabled because for some mysterious reason it causes 599 * printing not to work. But only sometimes, and mostly with 600 * UHCI and less often with OHCI. *sigh* 601 */ 602 { 603 struct usb_config_descriptor *cd = usbd_get_config_descriptor(dev); 604 struct usb_device_request req; 605 int len, alen; 606 607 req.bmRequestType = UT_READ_CLASS_INTERFACE; 608 req.bRequest = UR_GET_DEVICE_ID; 609 USETW(req.wValue, cd->bConfigurationValue); 610 USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting); 611 USETW(req.wLength, sizeof devinfo - 1); 612 error = usbd_do_request_flags(dev, &req, devinfo, USB_SHORT_XFER_OK, 613 &alen, USB_DEFAULT_TIMEOUT); 614 if (error) { 615 device_printf(sc->sc_dev, "cannot get device id\n"); 616 } else if (alen <= 2) { 617 device_printf(sc->sc_dev, "empty device id, no " 618 "printer connected?\n"); 619 } else { 620 /* devinfo now contains an IEEE-1284 device ID */ 621 len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff); 622 if (len > sizeof devinfo - 3) 623 len = sizeof devinfo - 3; 624 devinfo[len] = 0; 625 printf("%s: device id <", device_get_nameunit(sc->sc_dev)); 626 ieee1284_print_id(devinfo + 2); 627 printf(">\n"); 628 } 629 } 630#endif 631 632 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 633 &ulpt_fifo_methods, &sc->sc_fifo, 634 unit, -1, uaa->info.bIfaceIndex, 635 UID_ROOT, GID_OPERATOR, 0644); 636 if (error) { 637 goto detach; 638 } 639 error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx, 640 &unlpt_fifo_methods, &sc->sc_fifo_noreset, 641 unit, -1, uaa->info.bIfaceIndex, 642 UID_ROOT, GID_OPERATOR, 0644); 643 if (error) { 644 goto detach; 645 } 646 /* start reading of status */ 647 648 mtx_lock(&sc->sc_mtx); 649 ulpt_watchdog(sc); 650 mtx_unlock(&sc->sc_mtx); 651 return (0); 652 653detach: 654 ulpt_detach(dev); 655 return (ENOMEM); 656} 657 658static int 659ulpt_detach(device_t dev) 660{ 661 struct ulpt_softc *sc = device_get_softc(dev); 662 663 DPRINTF("sc=%p\n", sc); 664 665 usb_fifo_detach(&sc->sc_fifo); 666 usb_fifo_detach(&sc->sc_fifo_noreset); 667 668 mtx_lock(&sc->sc_mtx); 669 usb_callout_stop(&sc->sc_watchdog); 670 mtx_unlock(&sc->sc_mtx); 671 672 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER); 673 usb_callout_drain(&sc->sc_watchdog); 674 mtx_destroy(&sc->sc_mtx); 675 676 return (0); 677} 678 679#if 0 680/* XXX This does not belong here. */ 681 682/* 683 * Compare two strings until the second ends. 684 */ 685 686static uint8_t 687ieee1284_compare(const char *a, const char *b) 688{ 689 while (1) { 690 691 if (*b == 0) { 692 break; 693 } 694 if (*a != *b) { 695 return 1; 696 } 697 b++; 698 a++; 699 } 700 return 0; 701} 702 703/* 704 * Print select parts of an IEEE 1284 device ID. 705 */ 706void 707ieee1284_print_id(char *str) 708{ 709 char *p, *q; 710 711 for (p = str - 1; p; p = strchr(p, ';')) { 712 p++; /* skip ';' */ 713 if (ieee1284_compare(p, "MFG:") == 0 || 714 ieee1284_compare(p, "MANUFACTURER:") == 0 || 715 ieee1284_compare(p, "MDL:") == 0 || 716 ieee1284_compare(p, "MODEL:") == 0) { 717 q = strchr(p, ';'); 718 if (q) 719 printf("%.*s", (int)(q - p + 1), p); 720 } 721 } 722} 723 724#endif 725 726static void 727ulpt_watchdog(void *arg) 728{ 729 struct ulpt_softc *sc = arg; 730 731 mtx_assert(&sc->sc_mtx, MA_OWNED); 732 733 /* 734 * Only read status while the device is not opened, due to 735 * possible hardware or firmware bug in some printers. 736 */ 737 if (sc->sc_fflags == 0) 738 usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); 739 740 usb_callout_reset(&sc->sc_watchdog, 741 hz, &ulpt_watchdog, sc); 742} 743 744static devclass_t ulpt_devclass; 745 746static device_method_t ulpt_methods[] = { 747 DEVMETHOD(device_probe, ulpt_probe), 748 DEVMETHOD(device_attach, ulpt_attach), 749 DEVMETHOD(device_detach, ulpt_detach), 750 DEVMETHOD_END 751}; 752 753static driver_t ulpt_driver = { 754 .name = "ulpt", 755 .methods = ulpt_methods, 756 .size = sizeof(struct ulpt_softc), 757}; 758 759DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, NULL, 0); 760MODULE_DEPEND(ulpt, usb, 1, 1, 1); 761MODULE_VERSION(ulpt, 1); 762