summaryrefslogtreecommitdiff
path: root/sys/dev/usb/ulpt.c
blob: 7abeec341e3e279b1d38fd2c8517a5b5b3dcaf0c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
/*	$OpenBSD: ulpt.c,v 1.18 2003/11/07 11:10:47 jmc Exp $ */
/*	$NetBSD: ulpt.c,v 1.57 2003/01/05 10:19:42 scw Exp $	*/
/*	$FreeBSD: src/sys/dev/usb/ulpt.c,v 1.24 1999/11/17 22:33:44 n_hibma Exp $	*/

/*
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson (lennart@augustsson.net) at
 * Carlstedt Research & Technology.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Printer Class spec:
 *   http://www.usb.org/developers/devclass_docs/usbprint11.pdf
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#if defined(__NetBSD__) || defined(__OpenBSD__)
#include <sys/device.h>
#include <sys/ioctl.h>
#elif defined(__FreeBSD__)
#include <sys/ioccom.h>
#include <sys/module.h>
#include <sys/bus.h>
#endif
#include <sys/uio.h>
#include <sys/conf.h>
#include <sys/vnode.h>
#include <sys/syslog.h>

#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/usb_quirks.h>

#define	TIMEOUT		hz*16	/* wait up to 16 seconds for a ready */
#define	STEP		hz/4

#define	LPTPRI		(PZERO+8)
#define	ULPT_BSIZE	16384

#ifdef ULPT_DEBUG
#define DPRINTF(x)	if (ulptdebug) logprintf x
#define DPRINTFN(n,x)	if (ulptdebug>(n)) logprintf x
int	ulptdebug = 0;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif

#define UR_GET_DEVICE_ID 0
#define UR_GET_PORT_STATUS 1
#define UR_SOFT_RESET 2

#define	LPS_NERR		0x08	/* printer no error */
#define	LPS_SELECT		0x10	/* printer selected */
#define	LPS_NOPAPER		0x20	/* printer out of paper */
#define LPS_INVERT      (LPS_SELECT|LPS_NERR)
#define LPS_MASK        (LPS_SELECT|LPS_NERR|LPS_NOPAPER)

struct ulpt_softc {
	USBBASEDEVICE sc_dev;
	usbd_device_handle sc_udev;	/* device */
	usbd_interface_handle sc_iface;	/* interface */
	int sc_ifaceno;

	int sc_out;
	usbd_pipe_handle sc_out_pipe;	/* bulk out pipe */

	int sc_in;
	usbd_pipe_handle sc_in_pipe;	/* bulk in pipe */
	usbd_xfer_handle sc_in_xfer1;
	usbd_xfer_handle sc_in_xfer2;
	u_char sc_junk[64];	/* somewhere to dump input */

	u_char sc_state;
#define	ULPT_OPEN	0x01	/* device is open */
#define	ULPT_OBUSY	0x02	/* printer is busy doing output */
#define	ULPT_INIT	0x04	/* waiting to initialize for open */
	u_char sc_flags;
#define	ULPT_NOPRIME	0x40	/* don't prime on open */
	u_char sc_laststatus;

	int sc_refcnt;
	u_char sc_dying;

#if defined(__FreeBSD__)
	dev_t dev;
	dev_t dev_noprime;
#endif
};

#if defined(__NetBSD__)
dev_type_open(ulptopen);
dev_type_close(ulptclose);
dev_type_write(ulptwrite);
dev_type_ioctl(ulptioctl);

const struct cdevsw ulpt_cdevsw = {
	ulptopen, ulptclose, noread, ulptwrite, ulptioctl,
	nostop, notty, nopoll, nommap, nokqfilter,
};
#elif defined(__FreeBSD__)
Static d_open_t ulptopen;
Static d_close_t ulptclose;
Static d_write_t ulptwrite;
Static d_ioctl_t ulptioctl;

#define ULPT_CDEV_MAJOR 113

Static struct cdevsw ulpt_cdevsw = {
	/* open */	ulptopen,
	/* close */	ulptclose,
	/* read */	noread,
	/* write */	ulptwrite,
	/* ioctl */	ulptioctl,
	/* poll */	nopoll,
	/* mmap */	nommap,
	/* strategy */	nostrategy,
	/* name */	"ulpt",
	/* maj */	ULPT_CDEV_MAJOR,
	/* dump */	nodump,
	/* psize */	nopsize,
	/* flags */	0,
#if !defined(__FreeBSD__) || (__FreeBSD__ < 5)
	/* bmaj */	-1
#endif
};
#endif

void ulpt_disco(void *);

int ulpt_do_write(struct ulpt_softc *, struct uio *uio, int);
int ulpt_status(struct ulpt_softc *);
void ulpt_reset(struct ulpt_softc *);
int ulpt_statusmsg(u_char, struct ulpt_softc *);

#if 0
void ieee1284_print_id(char *);
#endif

#define	ULPTUNIT(s)	(minor(s) & 0x1f)
#define	ULPTFLAGS(s)	(minor(s) & 0xe0)


USB_DECLARE_DRIVER(ulpt);

USB_MATCH(ulpt)
{
	USB_MATCH_START(ulpt, uaa);
	usb_interface_descriptor_t *id;

	DPRINTFN(10,("ulpt_match\n"));
	if (uaa->iface == NULL)
		return (UMATCH_NONE);
	id = usbd_get_interface_descriptor(uaa->iface);
	if (id != NULL &&
	    id->bInterfaceClass == UICLASS_PRINTER &&
	    id->bInterfaceSubClass == UISUBCLASS_PRINTER &&
	    ((id->bInterfaceProtocol == UIPROTO_PRINTER_UNI) ||
	     (id->bInterfaceProtocol == UIPROTO_PRINTER_BI) ||
	     (id->bInterfaceProtocol == UIPROTO_PRINTER_1284)))
		return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
	return (UMATCH_NONE);
}

USB_ATTACH(ulpt)
{
	USB_ATTACH_START(ulpt, sc, uaa);
	usbd_device_handle dev = uaa->device;
	usbd_interface_handle iface = uaa->iface;
	usb_interface_descriptor_t *ifcd = usbd_get_interface_descriptor(iface);
	usb_interface_descriptor_t *id, *iend;
	usb_config_descriptor_t *cdesc;
	usbd_status err;
	char devinfo[1024];
	usb_endpoint_descriptor_t *ed;
	u_int8_t epcount;
	int i, altno;

	DPRINTFN(10,("ulpt_attach: sc=%p\n", sc));
	usbd_devinfo(dev, 0, devinfo, sizeof devinfo);
	USB_ATTACH_SETUP;
	printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev),
	       devinfo, ifcd->bInterfaceClass, ifcd->bInterfaceSubClass);

	/* XXX
	 * Stepping through the alternate settings needs to be abstracted out.
	 */
	cdesc = usbd_get_config_descriptor(dev);
	if (cdesc == NULL) {
		printf("%s: failed to get configuration descriptor\n",
		       USBDEVNAME(sc->sc_dev));
		USB_ATTACH_ERROR_RETURN;
	}
	iend = (usb_interface_descriptor_t *)
		   ((char *)cdesc + UGETW(cdesc->wTotalLength));
#ifdef DIAGNOSTIC
	if (ifcd < (usb_interface_descriptor_t *)cdesc ||
	    ifcd >= iend)
		panic("ulpt: iface desc out of range");
#endif
	/* Step through all the descriptors looking for bidir mode */
	for (id = ifcd, altno = 0;
	     id < iend;
	     id = (void *)((char *)id + id->bLength)) {
		if (id->bDescriptorType == UDESC_INTERFACE &&
		    id->bInterfaceNumber == ifcd->bInterfaceNumber) {
			if (id->bInterfaceClass == UICLASS_PRINTER &&
			    id->bInterfaceSubClass == UISUBCLASS_PRINTER &&
			    (id->bInterfaceProtocol == UIPROTO_PRINTER_BI /*||
			     id->bInterfaceProtocol == UIPROTO_PRINTER_1284*/))
				goto found;
			altno++;
		}
	}
	id = ifcd;		/* not found, use original */
 found:
	if (id != ifcd) {
		/* Found a new bidir setting */
		DPRINTF(("ulpt_attach: set altno = %d\n", altno));
		err = usbd_set_interface(iface, altno);
		if (err) {
			printf("%s: setting alternate interface failed\n",
			       USBDEVNAME(sc->sc_dev));
			sc->sc_dying = 1;
			USB_ATTACH_ERROR_RETURN;
		}
	}

	epcount = 0;
	(void)usbd_endpoint_count(iface, &epcount);

	sc->sc_in = -1;
	sc->sc_out = -1;
	for (i = 0; i < epcount; i++) {
		ed = usbd_interface2endpoint_descriptor(iface, i);
		if (ed == NULL) {
			printf("%s: couldn't get ep %d\n",
			    USBDEVNAME(sc->sc_dev), i);
			USB_ATTACH_ERROR_RETURN;
		}
		if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
		    UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
			sc->sc_in = ed->bEndpointAddress;
		} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
			   UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
			sc->sc_out = ed->bEndpointAddress;
		}
	}
	if (sc->sc_out == -1) {
		printf("%s: could not find bulk out endpoint\n",
		    USBDEVNAME(sc->sc_dev));
		sc->sc_dying = 1;
		USB_ATTACH_ERROR_RETURN;
	}

	if (usbd_get_quirks(dev)->uq_flags & UQ_BROKEN_BIDIR) {
		/* This device doesn't handle reading properly. */
		sc->sc_in = -1;
	}

	printf("%s: using %s-directional mode\n", USBDEVNAME(sc->sc_dev),
	       sc->sc_in >= 0 ? "bi" : "uni");

	DPRINTFN(10, ("ulpt_attach: bulk=%d\n", sc->sc_out));

	sc->sc_iface = iface;
	sc->sc_ifaceno = id->bInterfaceNumber;
	sc->sc_udev = dev;

#if 0
/*
 * This code is disabled because for some mysterious reason it causes
 * printing not to work.  But only sometimes, and mostly with
 * UHCI and less often with OHCI.  *sigh*
 */
	{
	usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev);
	usb_device_request_t req;
	int len, alen;

	req.bmRequestType = UT_READ_CLASS_INTERFACE;
	req.bRequest = UR_GET_DEVICE_ID;
	USETW(req.wValue, cd->bConfigurationValue);
	USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting);
	USETW(req.wLength, sizeof devinfo - 1);
	err = usbd_do_request_flags(dev, &req, devinfo, USBD_SHORT_XFER_OK,
		  &alen, USBD_DEFAULT_TIMEOUT);
	if (err) {
		printf("%s: cannot get device id\n", USBDEVNAME(sc->sc_dev));
	} else if (alen <= 2) {
		printf("%s: empty device id, no printer connected?\n",
		       USBDEVNAME(sc->sc_dev));
	} else {
		/* devinfo now contains an IEEE-1284 device ID */
		len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff);
		if (len > sizeof devinfo - 3)
			len = sizeof devinfo - 3;
		devinfo[len] = 0;
		printf("%s: device id <", USBDEVNAME(sc->sc_dev));
		ieee1284_print_id(devinfo+2);
		printf(">\n");
	}
	}
#endif

#if defined(__FreeBSD__)
	sc->dev = make_dev(&ulpt_cdevsw, device_get_unit(self),
		UID_ROOT, GID_OPERATOR, 0644, "ulpt%d", device_get_unit(self));
	sc->dev_noprime = make_dev(&ulpt_cdevsw,
		device_get_unit(self)|ULPT_NOPRIME,
		UID_ROOT, GID_OPERATOR, 0644, "unlpt%d", device_get_unit(self));
#endif

	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
			   USBDEV(sc->sc_dev));

	USB_ATTACH_SUCCESS_RETURN;
}

#if defined(__NetBSD__) || defined(__OpenBSD__)
int
ulpt_activate(device_ptr_t self, enum devact act)
{
	struct ulpt_softc *sc = (struct ulpt_softc *)self;

	switch (act) {
	case DVACT_ACTIVATE:
		return (EOPNOTSUPP);

	case DVACT_DEACTIVATE:
		sc->sc_dying = 1;
		break;
	}
	return (0);
}
#endif

USB_DETACH(ulpt)
{
	USB_DETACH_START(ulpt, sc);
	int s;
#if defined(__NetBSD__) || defined(__OpenBSD__)
	int maj, mn;
#elif defined(__FreeBSD__)
	struct vnode *vp;
#endif

	DPRINTF(("ulpt_detach: sc=%p\n", sc));

	sc->sc_dying = 1;
	if (sc->sc_out_pipe != NULL)
		usbd_abort_pipe(sc->sc_out_pipe);
	if (sc->sc_in_pipe != NULL)
		usbd_abort_pipe(sc->sc_in_pipe);

	s = splusb();
	if (--sc->sc_refcnt >= 0) {
		/* There is noone to wake, aborting the pipe is enough */
		/* Wait for processes to go away. */
		usb_detach_wait(USBDEV(sc->sc_dev));
	}
	splx(s);

#if defined(__NetBSD__) || defined(__OpenBSD__)
	/* locate the major number */
#if defined(__NetBSD__)
	maj = cdevsw_lookup_major(&ulpt_cdevsw);
#elif defined(__OpenBSD__)
	for (maj = 0; maj < nchrdev; maj++)
		if (cdevsw[maj].d_open == ulptopen)
			break;
#endif

	/* Nuke the vnodes for any open instances (calls close). */
	mn = self->dv_unit;
	vdevgone(maj, mn, mn, VCHR);
	vdevgone(maj, mn | ULPT_NOPRIME , mn | ULPT_NOPRIME, VCHR);
#elif defined(__FreeBSD__)
	vp = SLIST_FIRST(&sc->dev->si_hlist);
	if (vp)
		VOP_REVOKE(vp, REVOKEALL);
	vp = SLIST_FIRST(&sc->dev_noprime->si_hlist);
	if (vp)
		VOP_REVOKE(vp, REVOKEALL);

	destroy_dev(sc->dev);
	destroy_dev(sc->dev_noprime);
#endif

	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
			   USBDEV(sc->sc_dev));

	return (0);
}

int
ulpt_status(struct ulpt_softc *sc)
{
	usb_device_request_t req;
	usbd_status err;
	u_char status;

	req.bmRequestType = UT_READ_CLASS_INTERFACE;
	req.bRequest = UR_GET_PORT_STATUS;
	USETW(req.wValue, 0);
	USETW(req.wIndex, sc->sc_ifaceno);
	USETW(req.wLength, 1);
	err = usbd_do_request(sc->sc_udev, &req, &status);
	DPRINTFN(1, ("ulpt_status: status=0x%02x err=%d\n", status, err));
	if (!err)
		return (status);
	else
		return (0);
}

void
ulpt_reset(struct ulpt_softc *sc)
{
	usb_device_request_t req;

	DPRINTFN(1, ("ulpt_reset\n"));
	req.bRequest = UR_SOFT_RESET;
	USETW(req.wValue, 0);
	USETW(req.wIndex, sc->sc_ifaceno);
	USETW(req.wLength, 0);

	/*
	 * There was a mistake in the USB printer 1.0 spec that gave the
	 * request type as UT_WRITE_CLASS_OTHER; it should have been
	 * UT_WRITE_CLASS_INTERFACE.  Many printers use the old one,
	 * so we try both.
	 */
	req.bmRequestType = UT_WRITE_CLASS_OTHER;
	if (usbd_do_request(sc->sc_udev, &req, 0)) {	/* 1.0 */
		req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
		(void)usbd_do_request(sc->sc_udev, &req, 0); /* 1.1 */
	}
}

static void
ulpt_input(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
	struct ulpt_softc *sc = priv;

	DPRINTFN(2,("ulpt_input: got some data\n"));
	/* Do it again. */
	if (xfer == sc->sc_in_xfer1)
		usbd_transfer(sc->sc_in_xfer2);
	else
		usbd_transfer(sc->sc_in_xfer1);
}

int ulptusein = 1;

/*
 * Reset the printer, then wait until it's selected and not busy.
 */
int
ulptopen(dev_t dev, int flag, int mode, usb_proc_ptr p)
{
	u_char flags = ULPTFLAGS(dev);
	struct ulpt_softc *sc;
	usbd_status err;
	int spin, error;

	USB_GET_SC_OPEN(ulpt, ULPTUNIT(dev), sc);

	if (sc == NULL || sc->sc_iface == NULL || sc->sc_dying)
		return (ENXIO);

	if (sc->sc_state)
		return (EBUSY);

	sc->sc_state = ULPT_INIT;
	sc->sc_flags = flags;
	DPRINTF(("ulptopen: flags=0x%x\n", (unsigned)flags));

#if defined(ULPT_DEBUG) && defined(__FreeBSD__)
	/* Ignoring these flags might not be a good idea */
	if ((flags & ~ULPT_NOPRIME) != 0)
		printf("ulptopen: flags ignored: %b\n", flags,
			"\20\3POS_INIT\4POS_ACK\6PRIME_OPEN\7AUTOLF\10BYPASS");
#endif


	error = 0;
	sc->sc_refcnt++;

	if ((flags & ULPT_NOPRIME) == 0)
		ulpt_reset(sc);

	for (spin = 0; (ulpt_status(sc) & LPS_SELECT) == 0; spin += STEP) {
		DPRINTF(("ulpt_open: waiting a while\n"));
		if (spin >= TIMEOUT) {
			error = EBUSY;
			sc->sc_state = 0;
			goto done;
		}

		/* wait 1/4 second, give up if we get a signal */
		error = tsleep((caddr_t)sc, LPTPRI | PCATCH, "ulptop", STEP);
		if (error != EWOULDBLOCK) {
			sc->sc_state = 0;
			goto done;
		}

		if (sc->sc_dying) {
			error = ENXIO;
			sc->sc_state = 0;
			goto done;
		}
	}

	err = usbd_open_pipe(sc->sc_iface, sc->sc_out, 0, &sc->sc_out_pipe);
	if (err) {
		sc->sc_state = 0;
		error = EIO;
		goto done;
	}
	if (ulptusein && sc->sc_in != -1) {
		DPRINTF(("ulpt_open: open input pipe\n"));
		err = usbd_open_pipe(sc->sc_iface, sc->sc_in,0,&sc->sc_in_pipe);
		if (err) {
			error = EIO;
			usbd_close_pipe(sc->sc_out_pipe);
			sc->sc_out_pipe = NULL;
			sc->sc_state = 0;
			goto done;
		}
		sc->sc_in_xfer1 = usbd_alloc_xfer(sc->sc_udev);
		sc->sc_in_xfer2 = usbd_alloc_xfer(sc->sc_udev);
		if (sc->sc_in_xfer1 == NULL || sc->sc_in_xfer2 == NULL) {
			error = ENOMEM;
			if (sc->sc_in_xfer1 != NULL) {
				usbd_free_xfer(sc->sc_in_xfer1);
				sc->sc_in_xfer1 = NULL;
			}
			if (sc->sc_in_xfer2 != NULL) {
				usbd_free_xfer(sc->sc_in_xfer2);
				sc->sc_in_xfer2 = NULL;
			}
			usbd_close_pipe(sc->sc_out_pipe);
			sc->sc_out_pipe = NULL;
			usbd_close_pipe(sc->sc_in_pipe);
			sc->sc_in_pipe = NULL;
			sc->sc_state = 0;
			goto done;
		}
		usbd_setup_xfer(sc->sc_in_xfer1, sc->sc_in_pipe, sc,
		    sc->sc_junk, sizeof sc->sc_junk, USBD_SHORT_XFER_OK,
		    USBD_NO_TIMEOUT, ulpt_input);
		usbd_setup_xfer(sc->sc_in_xfer2, sc->sc_in_pipe, sc,
		    sc->sc_junk, sizeof sc->sc_junk, USBD_SHORT_XFER_OK,
		    USBD_NO_TIMEOUT, ulpt_input);
		usbd_transfer(sc->sc_in_xfer1); /* ignore failed start */
	}

	sc->sc_state = ULPT_OPEN;

 done:
	if (--sc->sc_refcnt < 0)
		usb_detach_wakeup(USBDEV(sc->sc_dev));

	DPRINTF(("ulptopen: done, error=%d\n", error));
	return (error);
}

int
ulpt_statusmsg(u_char status, struct ulpt_softc *sc)
{
	u_char new;

	status = (status ^ LPS_INVERT) & LPS_MASK;
	new = status & ~sc->sc_laststatus;
	sc->sc_laststatus = status;

	if (new & LPS_SELECT)
		log(LOG_NOTICE, "%s: offline\n", USBDEVNAME(sc->sc_dev));
	else if (new & LPS_NOPAPER)
		log(LOG_NOTICE, "%s: out of paper\n", USBDEVNAME(sc->sc_dev));
	else if (new & LPS_NERR)
		log(LOG_NOTICE, "%s: output error\n", USBDEVNAME(sc->sc_dev));

	return (status);
}

int
ulptclose(dev_t dev, int flag, int mode, usb_proc_ptr p)
{
	struct ulpt_softc *sc;

	USB_GET_SC(ulpt, ULPTUNIT(dev), sc);

	if (sc->sc_state != ULPT_OPEN)
		/* We are being forced to close before the open completed. */
		return (0);

	if (sc->sc_out_pipe != NULL) {
		usbd_close_pipe(sc->sc_out_pipe);
		sc->sc_out_pipe = NULL;
	}
	if (sc->sc_in_pipe != NULL) {
		usbd_abort_pipe(sc->sc_in_pipe);
		usbd_close_pipe(sc->sc_in_pipe);
		sc->sc_in_pipe = NULL;
		if (sc->sc_in_xfer1 != NULL) {
			usbd_free_xfer(sc->sc_in_xfer1);
			sc->sc_in_xfer1 = NULL;
		}
		if (sc->sc_in_xfer2 != NULL) {
			usbd_free_xfer(sc->sc_in_xfer2);
			sc->sc_in_xfer2 = NULL;
		}
	}

	sc->sc_state = 0;

	DPRINTF(("ulptclose: closed\n"));
	return (0);
}

int
ulpt_do_write(struct ulpt_softc *sc, struct uio *uio, int flags)
{
	u_int32_t n;
	int error = 0;
	void *bufp;
	usbd_xfer_handle xfer;
	usbd_status err;

	DPRINTF(("ulptwrite\n"));
	xfer = usbd_alloc_xfer(sc->sc_udev);
	if (xfer == NULL)
		return (ENOMEM);
	bufp = usbd_alloc_buffer(xfer, ULPT_BSIZE);
	if (bufp == NULL) {
		usbd_free_xfer(xfer);
		return (ENOMEM);
	}
	while ((n = min(ULPT_BSIZE, uio->uio_resid)) != 0) {
		ulpt_statusmsg(ulpt_status(sc), sc);
		error = uiomove(bufp, n, uio);
		if (error)
			break;
		DPRINTFN(1, ("ulptwrite: transfer %d bytes\n", n));
		err = usbd_bulk_transfer(xfer, sc->sc_out_pipe, USBD_NO_COPY,
			  USBD_NO_TIMEOUT, bufp, &n, "ulptwr");
		if (err) {
			DPRINTF(("ulptwrite: error=%d\n", err));
			error = EIO;
			break;
		}
	}
	usbd_free_xfer(xfer);

	return (error);
}

int
ulptwrite(dev_t dev, struct uio *uio, int flags)
{
	struct ulpt_softc *sc;
	int error;

	USB_GET_SC(ulpt, ULPTUNIT(dev), sc);

	if (sc->sc_dying)
		return (EIO);

	sc->sc_refcnt++;
	error = ulpt_do_write(sc, uio, flags);
	if (--sc->sc_refcnt < 0)
		usb_detach_wakeup(USBDEV(sc->sc_dev));
	return (error);
}

int
ulptioctl(dev_t dev, u_long cmd, caddr_t data, int flag, usb_proc_ptr p)
{
	int error = 0;

	switch (cmd) {
	default:
		error = ENODEV;
	}

	return (error);
}

#if 0
/* XXX This does not belong here. */
/*
 * Print select parts of a IEEE 1284 device ID.
 */
void
ieee1284_print_id(char *str)
{
	char *p, *q;

	for (p = str-1; p; p = strchr(p, ';')) {
		p++;		/* skip ';' */
		if (strncmp(p, "MFG:", 4) == 0 ||
		    strncmp(p, "MANUFACTURER:", 14) == 0 ||
		    strncmp(p, "MDL:", 4) == 0 ||
		    strncmp(p, "MODEL:", 6) == 0) {
			q = strchr(p, ';');
			if (q)
				printf("%.*s", (int)(q - p + 1), p);
		}
	}
}
#endif

#if defined(__FreeBSD__)
DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, usbd_driver_load, 0);
#endif