1 /* $NetBSD: ulpt.c,v 1.60 2003/10/04 21:19:50 augustss Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (lennart@augustsson.net) at
9 * Carlstedt Research & Technology.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 * Printer Class spec: http://www.usb.org/developers/data/devclass/usbprint109.PDF
35 * Printer Class spec: http://www.usb.org/developers/devclass_docs/usbprint11.pdf
36 */
37
38 #include <sys/stdint.h>
39 #include <sys/param.h>
40 #include <sys/queue.h>
41 #include <sys/types.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/bus.h>
45 #include <sys/module.h>
46 #include <sys/lock.h>
47 #include <sys/condvar.h>
48 #include <sys/sysctl.h>
49 #include <sys/unistd.h>
50 #include <sys/callout.h>
51 #include <sys/malloc.h>
52 #include <sys/caps.h>
53 #include <sys/syslog.h>
54 #include <sys/conf.h>
55 #include <sys/fcntl.h>
56
57 #include <bus/u4b/usb.h>
58 #include <bus/u4b/usbdi.h>
59 #include <bus/u4b/usbdi_util.h>
60 #include <bus/u4b/usbhid.h>
61 #include "usbdevs.h"
62
63 #define USB_DEBUG_VAR ulpt_debug
64 #include <bus/u4b/usb_debug.h>
65 #include <bus/u4b/usb_process.h>
66
67 #ifdef USB_DEBUG
68 static int ulpt_debug = 0;
69
70 static SYSCTL_NODE(_hw_usb, OID_AUTO, ulpt, CTLFLAG_RW, 0, "USB ulpt");
71 SYSCTL_INT(_hw_usb_ulpt, OID_AUTO, debug, CTLFLAG_RW,
72 &ulpt_debug, 0, "Debug level");
73 #endif
74
75 #define ULPT_BSIZE (1<<15) /* bytes */
76 #define ULPT_IFQ_MAXLEN 2 /* units */
77
78 #define UR_GET_DEVICE_ID 0x00
79 #define UR_GET_PORT_STATUS 0x01
80 #define UR_SOFT_RESET 0x02
81
82 #define LPS_NERR 0x08 /* printer no error */
83 #define LPS_SELECT 0x10 /* printer selected */
84 #define LPS_NOPAPER 0x20 /* printer out of paper */
85 #define LPS_INVERT (LPS_SELECT|LPS_NERR)
86 #define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER)
87
88 enum {
89 ULPT_BULK_DT_WR,
90 ULPT_BULK_DT_RD,
91 ULPT_INTR_DT_RD,
92 ULPT_N_TRANSFER,
93 };
94
95 struct ulpt_softc {
96 struct usb_fifo_sc sc_fifo;
97 struct usb_fifo_sc sc_fifo_noreset;
98 struct lock sc_lock;
99 struct usb_callout sc_watchdog;
100
101 device_t sc_dev;
102 struct usb_device *sc_udev;
103 struct usb_fifo *sc_fifo_open[2];
104 struct usb_xfer *sc_xfer[ULPT_N_TRANSFER];
105
106 int sc_fflags; /* current open flags, FREAD and
107 * FWRITE */
108 uint8_t sc_iface_no;
109 uint8_t sc_last_status;
110 uint8_t sc_zlps; /* number of consequtive zero length
111 * packets received */
112 };
113
114 /* prototypes */
115
116 static device_probe_t ulpt_probe;
117 static device_attach_t ulpt_attach;
118 static device_detach_t ulpt_detach;
119
120 static usb_callback_t ulpt_write_callback;
121 static usb_callback_t ulpt_read_callback;
122 static usb_callback_t ulpt_status_callback;
123
124 static void ulpt_reset(struct ulpt_softc *);
125 static void ulpt_watchdog(void *);
126
127 static usb_fifo_close_t ulpt_close;
128 static usb_fifo_cmd_t ulpt_start_read;
129 static usb_fifo_cmd_t ulpt_start_write;
130 static usb_fifo_cmd_t ulpt_stop_read;
131 static usb_fifo_cmd_t ulpt_stop_write;
132 static usb_fifo_ioctl_t ulpt_ioctl;
133 static usb_fifo_open_t ulpt_open;
134 static usb_fifo_open_t unlpt_open;
135
136 static struct usb_fifo_methods ulpt_fifo_methods = {
137 .f_close = &ulpt_close,
138 .f_ioctl = &ulpt_ioctl,
139 .f_open = &ulpt_open,
140 .f_start_read = &ulpt_start_read,
141 .f_start_write = &ulpt_start_write,
142 .f_stop_read = &ulpt_stop_read,
143 .f_stop_write = &ulpt_stop_write,
144 .basename[0] = "ulpt",
145 };
146
147 static struct usb_fifo_methods unlpt_fifo_methods = {
148 .f_close = &ulpt_close,
149 .f_ioctl = &ulpt_ioctl,
150 .f_open = &unlpt_open,
151 .f_start_read = &ulpt_start_read,
152 .f_start_write = &ulpt_start_write,
153 .f_stop_read = &ulpt_stop_read,
154 .f_stop_write = &ulpt_stop_write,
155 .basename[0] = "unlpt",
156 };
157
158 static void
ulpt_reset(struct ulpt_softc * sc)159 ulpt_reset(struct ulpt_softc *sc)
160 {
161 struct usb_device_request req;
162
163 DPRINTFN(2, "\n");
164
165 req.bRequest = UR_SOFT_RESET;
166 USETW(req.wValue, 0);
167 USETW(req.wIndex, sc->sc_iface_no);
168 USETW(req.wLength, 0);
169
170 /*
171 * There was a mistake in the USB printer 1.0 spec that gave the
172 * request type as UT_WRITE_CLASS_OTHER; it should have been
173 * UT_WRITE_CLASS_INTERFACE. Many printers use the old one,
174 * so we try both.
175 */
176
177 lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
178 req.bmRequestType = UT_WRITE_CLASS_OTHER;
179 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_lock,
180 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.0 */
181 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
182 if (usbd_do_request_flags(sc->sc_udev, &sc->sc_lock,
183 &req, NULL, 0, NULL, 2 * USB_MS_HZ)) { /* 1.1 */
184 /* ignore error */
185 }
186 }
187 lockmgr(&sc->sc_lock, LK_RELEASE);
188 }
189
190 static void
ulpt_write_callback(struct usb_xfer * xfer,usb_error_t error)191 ulpt_write_callback(struct usb_xfer *xfer, usb_error_t error)
192 {
193 struct ulpt_softc *sc = usbd_xfer_softc(xfer);
194 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_TX];
195 struct usb_page_cache *pc;
196 int actlen, max;
197
198 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
199
200 if (f == NULL) {
201 /* should not happen */
202 DPRINTF("no FIFO\n");
203 return;
204 }
205 DPRINTF("state=0x%x actlen=%d\n", USB_GET_STATE(xfer), actlen);
206
207 switch (USB_GET_STATE(xfer)) {
208 case USB_ST_TRANSFERRED:
209 case USB_ST_SETUP:
210 tr_setup:
211 pc = usbd_xfer_get_frame(xfer, 0);
212 max = usbd_xfer_max_len(xfer);
213 if (usb_fifo_get_data(f, pc, 0, max, &actlen, 0)) {
214 usbd_xfer_set_frame_len(xfer, 0, actlen);
215 usbd_transfer_submit(xfer);
216 }
217 break;
218
219 default: /* Error */
220 if (error != USB_ERR_CANCELLED) {
221 /* try to clear stall first */
222 usbd_xfer_set_stall(xfer);
223 goto tr_setup;
224 }
225 break;
226 }
227 }
228
229 static void
ulpt_read_callback(struct usb_xfer * xfer,usb_error_t error)230 ulpt_read_callback(struct usb_xfer *xfer, usb_error_t error)
231 {
232 struct ulpt_softc *sc = usbd_xfer_softc(xfer);
233 struct usb_fifo *f = sc->sc_fifo_open[USB_FIFO_RX];
234 struct usb_page_cache *pc;
235 int actlen;
236
237 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
238
239 if (f == NULL) {
240 /* should not happen */
241 DPRINTF("no FIFO\n");
242 return;
243 }
244 DPRINTF("state=0x%x\n", USB_GET_STATE(xfer));
245
246 switch (USB_GET_STATE(xfer)) {
247 case USB_ST_TRANSFERRED:
248
249 if (actlen == 0) {
250
251 if (sc->sc_zlps == 4) {
252 /* enable BULK throttle */
253 usbd_xfer_set_interval(xfer, 500); /* ms */
254 } else {
255 sc->sc_zlps++;
256 }
257 } else {
258 /* disable BULK throttle */
259
260 usbd_xfer_set_interval(xfer, 0);
261 sc->sc_zlps = 0;
262 }
263
264 pc = usbd_xfer_get_frame(xfer, 0);
265 usb_fifo_put_data(f, pc, 0, actlen, 1);
266
267 case USB_ST_SETUP:
268 tr_setup:
269 if (usb_fifo_put_bytes_max(f) != 0) {
270 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
271 usbd_transfer_submit(xfer);
272 }
273 break;
274
275 default: /* Error */
276 /* disable BULK throttle */
277 usbd_xfer_set_interval(xfer, 0);
278 sc->sc_zlps = 0;
279
280 if (error != USB_ERR_CANCELLED) {
281 /* try to clear stall first */
282 usbd_xfer_set_stall(xfer);
283 goto tr_setup;
284 }
285 break;
286 }
287 }
288
289 static void
ulpt_status_callback(struct usb_xfer * xfer,usb_error_t error)290 ulpt_status_callback(struct usb_xfer *xfer, usb_error_t error)
291 {
292 struct ulpt_softc *sc = usbd_xfer_softc(xfer);
293 struct usb_device_request req;
294 struct usb_page_cache *pc;
295 uint8_t cur_status;
296 uint8_t new_status;
297
298 switch (USB_GET_STATE(xfer)) {
299 case USB_ST_TRANSFERRED:
300
301 pc = usbd_xfer_get_frame(xfer, 1);
302 usbd_copy_out(pc, 0, &cur_status, 1);
303
304 cur_status = (cur_status ^ LPS_INVERT) & LPS_MASK;
305 new_status = cur_status & ~sc->sc_last_status;
306 sc->sc_last_status = cur_status;
307
308 if (new_status & LPS_SELECT)
309 log(LOG_NOTICE, "%s: offline\n",
310 device_get_nameunit(sc->sc_dev));
311 else if (new_status & LPS_NOPAPER)
312 log(LOG_NOTICE, "%s: out of paper\n",
313 device_get_nameunit(sc->sc_dev));
314 else if (new_status & LPS_NERR)
315 log(LOG_NOTICE, "%s: output error\n",
316 device_get_nameunit(sc->sc_dev));
317 break;
318
319 case USB_ST_SETUP:
320 req.bmRequestType = UT_READ_CLASS_INTERFACE;
321 req.bRequest = UR_GET_PORT_STATUS;
322 USETW(req.wValue, 0);
323 req.wIndex[0] = sc->sc_iface_no;
324 req.wIndex[1] = 0;
325 USETW(req.wLength, 1);
326
327 pc = usbd_xfer_get_frame(xfer, 0);
328 usbd_copy_in(pc, 0, &req, sizeof(req));
329
330 usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
331 usbd_xfer_set_frame_len(xfer, 1, 1);
332 usbd_xfer_set_frames(xfer, 2);
333 usbd_transfer_submit(xfer);
334 break;
335
336 default: /* Error */
337 DPRINTF("error=%s\n", usbd_errstr(error));
338 if (error != USB_ERR_CANCELLED) {
339 /* wait for next watchdog timeout */
340 }
341 break;
342 }
343 }
344
345 static const struct usb_config ulpt_config[ULPT_N_TRANSFER] = {
346 [ULPT_BULK_DT_WR] = {
347 .type = UE_BULK,
348 .endpoint = UE_ADDR_ANY,
349 .direction = UE_DIR_OUT,
350 .bufsize = ULPT_BSIZE,
351 .flags = {.pipe_bof = 1,.proxy_buffer = 1},
352 .callback = &ulpt_write_callback,
353 },
354
355 [ULPT_BULK_DT_RD] = {
356 .type = UE_BULK,
357 .endpoint = UE_ADDR_ANY,
358 .direction = UE_DIR_IN,
359 .bufsize = ULPT_BSIZE,
360 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1},
361 .callback = &ulpt_read_callback,
362 },
363
364 [ULPT_INTR_DT_RD] = {
365 .type = UE_CONTROL,
366 .endpoint = 0x00, /* Control pipe */
367 .direction = UE_DIR_ANY,
368 .bufsize = sizeof(struct usb_device_request) + 1,
369 .callback = &ulpt_status_callback,
370 .timeout = 1000, /* 1 second */
371 },
372 };
373
374 static void
ulpt_start_read(struct usb_fifo * fifo)375 ulpt_start_read(struct usb_fifo *fifo)
376 {
377 struct ulpt_softc *sc = usb_fifo_softc(fifo);
378
379 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_RD]);
380 }
381
382 static void
ulpt_stop_read(struct usb_fifo * fifo)383 ulpt_stop_read(struct usb_fifo *fifo)
384 {
385 struct ulpt_softc *sc = usb_fifo_softc(fifo);
386
387 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_RD]);
388 }
389
390 static void
ulpt_start_write(struct usb_fifo * fifo)391 ulpt_start_write(struct usb_fifo *fifo)
392 {
393 struct ulpt_softc *sc = usb_fifo_softc(fifo);
394
395 usbd_transfer_start(sc->sc_xfer[ULPT_BULK_DT_WR]);
396 }
397
398 static void
ulpt_stop_write(struct usb_fifo * fifo)399 ulpt_stop_write(struct usb_fifo *fifo)
400 {
401 struct ulpt_softc *sc = usb_fifo_softc(fifo);
402
403 usbd_transfer_stop(sc->sc_xfer[ULPT_BULK_DT_WR]);
404 }
405
406 static int
ulpt_open(struct usb_fifo * fifo,int fflags)407 ulpt_open(struct usb_fifo *fifo, int fflags)
408 {
409 struct ulpt_softc *sc = usb_fifo_softc(fifo);
410
411 /* we assume that open is a serial process */
412
413 if (sc->sc_fflags == 0) {
414
415 /* reset USB paralell port */
416
417 ulpt_reset(sc);
418 }
419 return (unlpt_open(fifo, fflags));
420 }
421
422 static int
unlpt_open(struct usb_fifo * fifo,int fflags)423 unlpt_open(struct usb_fifo *fifo, int fflags)
424 {
425 struct ulpt_softc *sc = usb_fifo_softc(fifo);
426
427 if (sc->sc_fflags & fflags) {
428 return (EBUSY);
429 }
430 if (fflags & FREAD) {
431 /* clear stall first */
432 lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
433 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_RD]);
434 lockmgr(&sc->sc_lock, LK_RELEASE);
435 if (usb_fifo_alloc_buffer(fifo,
436 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_RD]),
437 ULPT_IFQ_MAXLEN)) {
438 return (ENOMEM);
439 }
440 /* set which FIFO is opened */
441 sc->sc_fifo_open[USB_FIFO_RX] = fifo;
442 }
443 if (fflags & FWRITE) {
444 /* clear stall first */
445 lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
446 usbd_xfer_set_stall(sc->sc_xfer[ULPT_BULK_DT_WR]);
447 lockmgr(&sc->sc_lock, LK_RELEASE);
448 if (usb_fifo_alloc_buffer(fifo,
449 usbd_xfer_max_len(sc->sc_xfer[ULPT_BULK_DT_WR]),
450 ULPT_IFQ_MAXLEN)) {
451 return (ENOMEM);
452 }
453 /* set which FIFO is opened */
454 sc->sc_fifo_open[USB_FIFO_TX] = fifo;
455 }
456 sc->sc_fflags |= fflags & (FREAD | FWRITE);
457 return (0);
458 }
459
460 static void
ulpt_close(struct usb_fifo * fifo,int fflags)461 ulpt_close(struct usb_fifo *fifo, int fflags)
462 {
463 struct ulpt_softc *sc = usb_fifo_softc(fifo);
464
465 sc->sc_fflags &= ~(fflags & (FREAD | FWRITE));
466
467 if (fflags & (FREAD | FWRITE)) {
468 usb_fifo_free_buffer(fifo);
469 }
470 }
471
472 static int
ulpt_ioctl(struct usb_fifo * fifo,u_long cmd,void * data,int fflags)473 ulpt_ioctl(struct usb_fifo *fifo, u_long cmd, void *data,
474 int fflags)
475 {
476 return (ENODEV);
477 }
478
479 static const STRUCT_USB_HOST_ID ulpt_devs[] = {
480 /* Uni-directional USB printer */
481 {USB_IFACE_CLASS(UICLASS_PRINTER),
482 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER),
483 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_UNI)},
484
485 /* Bi-directional USB printer */
486 {USB_IFACE_CLASS(UICLASS_PRINTER),
487 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER),
488 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_BI)},
489
490 /* 1284 USB printer */
491 {USB_IFACE_CLASS(UICLASS_PRINTER),
492 USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER),
493 USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)},
494 };
495
496 static int
ulpt_probe(device_t dev)497 ulpt_probe(device_t dev)
498 {
499 struct usb_attach_arg *uaa = device_get_ivars(dev);
500 int error;
501
502 DPRINTFN(11, "\n");
503
504 if (uaa->usb_mode != USB_MODE_HOST)
505 return (ENXIO);
506
507 error = usbd_lookup_id_by_uaa(ulpt_devs, sizeof(ulpt_devs), uaa);
508 if (error)
509 return (error);
510
511 return (BUS_PROBE_GENERIC);
512 }
513
514 static int
ulpt_attach(device_t dev)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 lockinit(&sc->sc_lock, "ulpt lock", 0, LK_CANRECURSE);
533
534 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_lock, 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_lock);
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_lock,
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_lock,
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 lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
642 ulpt_watchdog(sc);
643 lockmgr(&sc->sc_lock, LK_RELEASE);
644 return (0);
645
646 detach:
647 ulpt_detach(dev);
648 return (ENOMEM);
649 }
650
651 static int
ulpt_detach(device_t dev)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 lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
662 usb_callout_stop(&sc->sc_watchdog);
663 lockmgr(&sc->sc_lock, LK_RELEASE);
664
665 usbd_transfer_unsetup(sc->sc_xfer, ULPT_N_TRANSFER);
666 usb_callout_drain(&sc->sc_watchdog);
667 lockuninit(&sc->sc_lock);
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
ulpt_watchdog(void * arg)720 ulpt_watchdog(void *arg)
721 {
722 struct ulpt_softc *sc = arg;
723
724 KKASSERT(lockowned(&sc->sc_lock));
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 DEVMETHOD_END
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, NULL);
753 MODULE_DEPEND(ulpt, usb, 1, 1, 1);
754 MODULE_VERSION(ulpt, 1);
755