1 | /* $NetBSD: ucycom.c,v 1.44 2016/07/07 06:55:42 msaitoh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2005 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Nick Hudson |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | /* |
32 | * This code is based on the ucom driver. |
33 | */ |
34 | |
35 | /* |
36 | * Device driver for Cypress CY7C637xx and CY7C640/1xx series USB to |
37 | * RS232 bridges. |
38 | */ |
39 | |
40 | #include <sys/cdefs.h> |
41 | __KERNEL_RCSID(0, "$NetBSD: ucycom.c,v 1.44 2016/07/07 06:55:42 msaitoh Exp $" ); |
42 | |
43 | #include <sys/param.h> |
44 | #include <sys/systm.h> |
45 | #include <sys/conf.h> |
46 | #include <sys/kernel.h> |
47 | #include <sys/kmem.h> |
48 | #include <sys/device.h> |
49 | #include <sys/sysctl.h> |
50 | #include <sys/tty.h> |
51 | #include <sys/file.h> |
52 | #include <sys/vnode.h> |
53 | #include <sys/kauth.h> |
54 | #include <sys/lwp.h> |
55 | |
56 | #include <dev/usb/usb.h> |
57 | #include <dev/usb/usbhid.h> |
58 | |
59 | #include <dev/usb/usbdi.h> |
60 | #include <dev/usb/usbdi_util.h> |
61 | #include <dev/usb/usbdevs.h> |
62 | #include <dev/usb/uhidev.h> |
63 | #include <dev/usb/hid.h> |
64 | |
65 | #include "ioconf.h" |
66 | |
67 | #ifdef UCYCOM_DEBUG |
68 | #define DPRINTF(x) if (ucycomdebug) printf x |
69 | #define DPRINTFN(n, x) if (ucycomdebug > (n)) printf x |
70 | int ucycomdebug = 20; |
71 | #else |
72 | #define DPRINTF(x) |
73 | #define DPRINTFN(n,x) |
74 | #endif |
75 | |
76 | |
77 | #define UCYCOMCALLUNIT_MASK TTCALLUNIT_MASK |
78 | #define UCYCOMUNIT_MASK TTUNIT_MASK |
79 | #define UCYCOMDIALOUT_MASK TTDIALOUT_MASK |
80 | |
81 | #define UCYCOMCALLUNIT(x) TTCALLUNIT(x) |
82 | #define UCYCOMUNIT(x) TTUNIT(x) |
83 | #define UCYCOMDIALOUT(x) TTDIALOUT(x) |
84 | |
85 | /* Configuration Byte */ |
86 | #define UCYCOM_RESET 0x80 |
87 | #define UCYCOM_PARITY_TYPE_MASK 0x20 |
88 | #define UCYCOM_PARITY_ODD 0x20 |
89 | #define UCYCOM_PARITY_EVEN 0x00 |
90 | #define UCYCOM_PARITY_MASK 0x10 |
91 | #define UCYCOM_PARITY_ON 0x10 |
92 | #define UCYCOM_PARITY_OFF 0x00 |
93 | #define UCYCOM_STOP_MASK 0x08 |
94 | #define UCYCOM_STOP_BITS_2 0x08 |
95 | #define UCYCOM_STOP_BITS_1 0x00 |
96 | #define UCYCOM_DATA_MASK 0x03 |
97 | #define UCYCOM_DATA_BITS_8 0x03 |
98 | #define UCYCOM_DATA_BITS_7 0x02 |
99 | #define UCYCOM_DATA_BITS_6 0x01 |
100 | #define UCYCOM_DATA_BITS_5 0x00 |
101 | |
102 | /* Modem (Input) status byte */ |
103 | #define UCYCOM_RI 0x80 |
104 | #define UCYCOM_DCD 0x40 |
105 | #define UCYCOM_DSR 0x20 |
106 | #define UCYCOM_CTS 0x10 |
107 | #define UCYCOM_ERROR 0x08 |
108 | #define UCYCOM_LMASK 0x07 |
109 | |
110 | /* Modem (Output) control byte */ |
111 | #define UCYCOM_DTR 0x20 |
112 | #define UCYCOM_RTS 0x10 |
113 | #define UCYCOM_ORESET 0x08 |
114 | |
115 | struct ucycom_softc { |
116 | struct uhidev sc_hdev; |
117 | |
118 | struct tty *sc_tty; |
119 | |
120 | kmutex_t sc_lock; /* protects refcnt, others */ |
121 | |
122 | /* uhidev parameters */ |
123 | size_t sc_flen; /* feature report length */ |
124 | size_t sc_ilen; /* input report length */ |
125 | size_t sc_olen; /* output report length */ |
126 | |
127 | uint8_t *sc_obuf; |
128 | int sc_wlen; |
129 | |
130 | /* settings */ |
131 | uint32_t sc_baud; |
132 | uint8_t sc_cfg; /* Data format */ |
133 | uint8_t sc_mcr; /* Modem control */ |
134 | uint8_t sc_msr; /* Modem status */ |
135 | int sc_swflags; |
136 | |
137 | /* flags */ |
138 | char sc_dying; |
139 | }; |
140 | |
141 | dev_type_open(ucycomopen); |
142 | dev_type_close(ucycomclose); |
143 | dev_type_read(ucycomread); |
144 | dev_type_write(ucycomwrite); |
145 | dev_type_ioctl(ucycomioctl); |
146 | dev_type_stop(ucycomstop); |
147 | dev_type_tty(ucycomtty); |
148 | dev_type_poll(ucycompoll); |
149 | |
150 | const struct cdevsw ucycom_cdevsw = { |
151 | .d_open = ucycomopen, |
152 | .d_close = ucycomclose, |
153 | .d_read = ucycomread, |
154 | .d_write = ucycomwrite, |
155 | .d_ioctl = ucycomioctl, |
156 | .d_stop = ucycomstop, |
157 | .d_tty = ucycomtty, |
158 | .d_poll = ucycompoll, |
159 | .d_mmap = nommap, |
160 | .d_kqfilter = ttykqfilter, |
161 | .d_discard = nodiscard, |
162 | .d_flag = D_TTY |
163 | }; |
164 | |
165 | Static int ucycomparam(struct tty *, struct termios *); |
166 | Static void ucycomstart(struct tty *); |
167 | Static void ucycomwritecb(struct usbd_xfer *, void *, usbd_status); |
168 | Static void ucycom_intr(struct uhidev *, void *, u_int); |
169 | Static int ucycom_configure(struct ucycom_softc *, uint32_t, uint8_t); |
170 | Static void tiocm_to_ucycom(struct ucycom_softc *, u_long, int); |
171 | Static int ucycom_to_tiocm(struct ucycom_softc *); |
172 | Static void ucycom_set_status(struct ucycom_softc *); |
173 | Static void ucycom_dtr(struct ucycom_softc *, int); |
174 | #if 0 |
175 | Static void ucycom_rts(struct ucycom_softc *, int); |
176 | #endif |
177 | Static void ucycom_cleanup(struct ucycom_softc *); |
178 | |
179 | #ifdef UCYCOM_DEBUG |
180 | Static void ucycom_get_cfg(struct ucycom_softc *); |
181 | #endif |
182 | |
183 | Static const struct usb_devno ucycom_devs[] = { |
184 | { USB_VENDOR_CYPRESS, USB_PRODUCT_CYPRESS_USBRS232 }, |
185 | { USB_VENDOR_DELORME, USB_PRODUCT_DELORME_EARTHMATE }, |
186 | }; |
187 | #define ucycom_lookup(v, p) usb_lookup(ucycom_devs, v, p) |
188 | |
189 | int ucycom_match(device_t, cfdata_t, void *); |
190 | void ucycom_attach(device_t, device_t, void *); |
191 | int ucycom_detach(device_t, int); |
192 | int ucycom_activate(device_t, enum devact); |
193 | extern struct cfdriver ucycom_cd; |
194 | CFATTACH_DECL_NEW(ucycom, sizeof(struct ucycom_softc), ucycom_match, |
195 | ucycom_attach, ucycom_detach, ucycom_activate); |
196 | |
197 | int |
198 | ucycom_match(device_t parent, cfdata_t match, void *aux) |
199 | { |
200 | struct uhidev_attach_arg *uha = aux; |
201 | |
202 | return ucycom_lookup(uha->uiaa->uiaa_vendor, uha->uiaa->uiaa_product) |
203 | != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE; |
204 | } |
205 | |
206 | void |
207 | ucycom_attach(device_t parent, device_t self, void *aux) |
208 | { |
209 | struct ucycom_softc *sc = device_private(self); |
210 | struct uhidev_attach_arg *uha = aux; |
211 | int size, repid; |
212 | void *desc; |
213 | |
214 | sc->sc_hdev.sc_dev = self; |
215 | sc->sc_hdev.sc_intr = ucycom_intr; |
216 | sc->sc_hdev.sc_parent = uha->parent; |
217 | sc->sc_hdev.sc_report_id = uha->reportid; |
218 | |
219 | uhidev_get_report_desc(uha->parent, &desc, &size); |
220 | repid = uha->reportid; |
221 | sc->sc_ilen = hid_report_size(desc, size, hid_input, repid); |
222 | sc->sc_olen = hid_report_size(desc, size, hid_output, repid); |
223 | sc->sc_flen = hid_report_size(desc, size, hid_feature, repid); |
224 | |
225 | sc->sc_msr = sc->sc_mcr = 0; |
226 | |
227 | /* set up tty */ |
228 | sc->sc_tty = tty_alloc(); |
229 | sc->sc_tty->t_sc = sc; |
230 | sc->sc_tty->t_oproc = ucycomstart; |
231 | sc->sc_tty->t_param = ucycomparam; |
232 | |
233 | tty_attach(sc->sc_tty); |
234 | |
235 | /* Nothing interesting to report */ |
236 | aprint_normal("\n" ); |
237 | } |
238 | |
239 | |
240 | int |
241 | ucycom_detach(device_t self, int flags) |
242 | { |
243 | struct ucycom_softc *sc = device_private(self); |
244 | struct tty *tp = sc->sc_tty; |
245 | int maj, mn; |
246 | int s; |
247 | |
248 | DPRINTF(("ucycom_detach: sc=%p flags=%d tp=%p\n" , sc, flags, tp)); |
249 | |
250 | sc->sc_dying = 1; |
251 | |
252 | s = splusb(); |
253 | if (tp != NULL) { |
254 | mutex_spin_enter(&tty_lock); |
255 | CLR(tp->t_state, TS_CARR_ON); |
256 | CLR(tp->t_cflag, CLOCAL | MDMBUF); |
257 | ttyflush(tp, FREAD|FWRITE); |
258 | mutex_spin_exit(&tty_lock); |
259 | } |
260 | /* Wait for processes to go away. */ |
261 | usb_detach_waitold(sc->sc_hdev.sc_dev); |
262 | splx(s); |
263 | |
264 | /* locate the major number */ |
265 | maj = cdevsw_lookup_major(&ucycom_cdevsw); |
266 | |
267 | /* Nuke the vnodes for any open instances. */ |
268 | mn = device_unit(self); |
269 | |
270 | DPRINTFN(2, ("ucycom_detach: maj=%d mn=%d\n" , maj, mn)); |
271 | vdevgone(maj, mn, mn, VCHR); |
272 | vdevgone(maj, mn | UCYCOMDIALOUT_MASK, mn | UCYCOMDIALOUT_MASK, VCHR); |
273 | vdevgone(maj, mn | UCYCOMCALLUNIT_MASK, mn | UCYCOMCALLUNIT_MASK, VCHR); |
274 | |
275 | /* Detach and free the tty. */ |
276 | if (tp != NULL) { |
277 | DPRINTF(("ucycom_detach: tty_detach %p\n" , tp)); |
278 | tty_detach(tp); |
279 | tty_free(tp); |
280 | sc->sc_tty = NULL; |
281 | } |
282 | |
283 | return 0; |
284 | } |
285 | |
286 | int |
287 | ucycom_activate(device_t self, enum devact act) |
288 | { |
289 | struct ucycom_softc *sc = device_private(self); |
290 | |
291 | DPRINTFN(5,("ucycom_activate: %d\n" , act)); |
292 | |
293 | switch (act) { |
294 | case DVACT_DEACTIVATE: |
295 | sc->sc_dying = 1; |
296 | return 0; |
297 | default: |
298 | return EOPNOTSUPP; |
299 | } |
300 | } |
301 | |
302 | #if 0 |
303 | void |
304 | ucycom_shutdown(struct ucycom_softc *sc) |
305 | { |
306 | struct tty *tp = sc->sc_tty; |
307 | |
308 | DPRINTF(("ucycom_shutdown\n" )); |
309 | /* |
310 | * Hang up if necessary. Wait a bit, so the other side has time to |
311 | * notice even if we immediately open the port again. |
312 | */ |
313 | if (ISSET(tp->t_cflag, HUPCL)) { |
314 | ucycom_dtr(sc, 0); |
315 | (void)tsleep(sc, TTIPRI, ttclos, hz); |
316 | } |
317 | } |
318 | #endif |
319 | |
320 | int |
321 | ucycomopen(dev_t dev, int flag, int mode, struct lwp *l) |
322 | { |
323 | struct ucycom_softc *sc = |
324 | device_lookup_private(&ucycom_cd, UCYCOMUNIT(dev)); |
325 | struct tty *tp; |
326 | int s, err; |
327 | |
328 | DPRINTF(("ucycomopen: unit=%d\n" , UCYCOMUNIT(dev))); |
329 | DPRINTF(("ucycomopen: sc=%p\n" , sc)); |
330 | |
331 | if (sc == NULL) |
332 | return ENXIO; |
333 | |
334 | if (sc->sc_dying) |
335 | return EIO; |
336 | |
337 | if (!device_is_active(sc->sc_hdev.sc_dev)) |
338 | return ENXIO; |
339 | |
340 | tp = sc->sc_tty; |
341 | |
342 | DPRINTF(("ucycomopen: tp=%p\n" , tp)); |
343 | |
344 | if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) |
345 | return EBUSY; |
346 | |
347 | s = spltty(); |
348 | |
349 | if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { |
350 | struct termios t; |
351 | |
352 | tp->t_dev = dev; |
353 | |
354 | err = uhidev_open(&sc->sc_hdev); |
355 | if (err) { |
356 | /* Any cleanup? */ |
357 | splx(s); |
358 | return err; |
359 | } |
360 | |
361 | /* |
362 | * Initialize the termios status to the defaults. Add in the |
363 | * sticky bits from TIOCSFLAGS. |
364 | */ |
365 | t.c_ispeed = 0; |
366 | t.c_ospeed = TTYDEF_SPEED; |
367 | t.c_cflag = TTYDEF_CFLAG; |
368 | if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) |
369 | SET(t.c_cflag, CLOCAL); |
370 | if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) |
371 | SET(t.c_cflag, CRTSCTS); |
372 | if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) |
373 | SET(t.c_cflag, MDMBUF); |
374 | |
375 | tp->t_ospeed = 0; |
376 | (void) ucycomparam(tp, &t); |
377 | tp->t_iflag = TTYDEF_IFLAG; |
378 | tp->t_oflag = TTYDEF_OFLAG; |
379 | tp->t_lflag = TTYDEF_LFLAG; |
380 | ttychars(tp); |
381 | ttsetwater(tp); |
382 | |
383 | /* Allocate an output report buffer */ |
384 | sc->sc_obuf = kmem_alloc(sc->sc_olen, KM_SLEEP); |
385 | |
386 | DPRINTF(("ucycomopen: sc->sc_obuf=%p\n" , sc->sc_obuf)); |
387 | |
388 | #if 0 |
389 | /* XXX Don't do this as for some reason trying to do an |
390 | * XXX interrupt out transfer at this point means everything |
391 | * XXX gets stuck!?! |
392 | */ |
393 | /* |
394 | * Turn on DTR. We must always do this, even if carrier is not |
395 | * present, because otherwise we'd have to use TIOCSDTR |
396 | * immediately after setting CLOCAL, which applications do not |
397 | * expect. We always assert DTR while the device is open |
398 | * unless explicitly requested to deassert it. |
399 | */ |
400 | ucycom_dtr(sc, 1); |
401 | #endif |
402 | |
403 | #if 0 |
404 | /* XXX CLR(sc->sc_rx_flags, RX_ANY_BLOCK);*/ |
405 | ucycom_hwiflow(sc); |
406 | #endif |
407 | |
408 | } |
409 | splx(s); |
410 | |
411 | err = ttyopen(tp, UCYCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); |
412 | if (err) |
413 | goto bad; |
414 | |
415 | err = (*tp->t_linesw->l_open)(dev, tp); |
416 | if (err) |
417 | goto bad; |
418 | |
419 | return 0; |
420 | |
421 | bad: |
422 | if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { |
423 | /* |
424 | * We failed to open the device, and nobody else had it opened. |
425 | * Clean up the state as appropriate. |
426 | */ |
427 | ucycom_cleanup(sc); |
428 | } |
429 | |
430 | return err; |
431 | |
432 | } |
433 | |
434 | |
435 | int |
436 | ucycomclose(dev_t dev, int flag, int mode, struct lwp *l) |
437 | { |
438 | struct ucycom_softc *sc = |
439 | device_lookup_private(&ucycom_cd, UCYCOMUNIT(dev)); |
440 | struct tty *tp = sc->sc_tty; |
441 | |
442 | DPRINTF(("ucycomclose: unit=%d\n" , UCYCOMUNIT(dev))); |
443 | if (!ISSET(tp->t_state, TS_ISOPEN)) |
444 | return 0; |
445 | |
446 | (*tp->t_linesw->l_close)(tp, flag); |
447 | ttyclose(tp); |
448 | |
449 | if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { |
450 | /* |
451 | * Although we got a last close, the device may still be in |
452 | * use; e.g. if this was the dialout node, and there are still |
453 | * processes waiting for carrier on the non-dialout node. |
454 | */ |
455 | ucycom_cleanup(sc); |
456 | } |
457 | |
458 | return 0; |
459 | } |
460 | |
461 | Static void |
462 | ucycomstart(struct tty *tp) |
463 | { |
464 | struct ucycom_softc *sc = |
465 | device_lookup_private(&ucycom_cd, UCYCOMUNIT(tp->t_dev)); |
466 | usbd_status err __unused; |
467 | u_char *data; |
468 | int cnt, len, s; |
469 | |
470 | if (sc->sc_dying) |
471 | return; |
472 | |
473 | s = spltty(); |
474 | if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) { |
475 | DPRINTFN(4,("ucycomstart: no go, state=0x%x\n" , tp->t_state)); |
476 | goto out; |
477 | } |
478 | |
479 | #if 0 |
480 | /* HW FLOW CTL */ |
481 | if (sc->sc_tx_stopped) |
482 | goto out; |
483 | #endif |
484 | |
485 | if (ttypull(tp) == 0) |
486 | goto out; |
487 | |
488 | /* Grab the first contiguous region of buffer space. */ |
489 | data = tp->t_outq.c_cf; |
490 | cnt = ndqb(&tp->t_outq, 0); |
491 | |
492 | if (cnt == 0) { |
493 | DPRINTF(("ucycomstart: cnt == 0\n" )); |
494 | goto out; |
495 | } |
496 | |
497 | SET(tp->t_state, TS_BUSY); |
498 | |
499 | /* |
500 | * The 8 byte output report uses byte 0 for control and byte |
501 | * count. |
502 | * |
503 | * The 32 byte output report uses byte 0 for control. Byte 1 |
504 | * is used for byte count. |
505 | */ |
506 | memset(sc->sc_obuf, 0, sc->sc_olen); |
507 | len = cnt; |
508 | switch (sc->sc_olen) { |
509 | case 8: |
510 | if (cnt > sc->sc_olen - 1) { |
511 | DPRINTF(("ucycomstart(8): big buffer %d chars\n" , len)); |
512 | len = sc->sc_olen - 1; |
513 | } |
514 | |
515 | memcpy(sc->sc_obuf + 1, data, len); |
516 | sc->sc_obuf[0] = len | sc->sc_mcr; |
517 | |
518 | DPRINTF(("ucycomstart(8): sc->sc_obuf[0] = %d | %d = %d\n" , |
519 | len, sc->sc_mcr, sc->sc_obuf[0])); |
520 | #ifdef UCYCOM_DEBUG |
521 | if (ucycomdebug > 10) { |
522 | uint32_t i; |
523 | uint8_t *d = data; |
524 | |
525 | DPRINTF(("ucycomstart(8): data =" )); |
526 | for (i = 0; i < len; i++) |
527 | DPRINTF((" %02x" , d[i])); |
528 | DPRINTF(("\n" )); |
529 | } |
530 | #endif |
531 | break; |
532 | |
533 | case 32: |
534 | if (cnt > sc->sc_olen - 2) { |
535 | DPRINTF(("ucycomstart(32): big buffer %d chars\n" , |
536 | len)); |
537 | len = sc->sc_olen - 2; |
538 | } |
539 | |
540 | memcpy(sc->sc_obuf + 2, data, len); |
541 | sc->sc_obuf[0] = sc->sc_mcr; |
542 | sc->sc_obuf[1] = len; |
543 | DPRINTF(("ucycomstart(32): sc->sc_obuf[0] = %d\n" |
544 | "sc->sc_obuf[1] = %d\n" , sc->sc_obuf[0], sc->sc_obuf[1])); |
545 | #ifdef UCYCOM_DEBUG |
546 | if (ucycomdebug > 10) { |
547 | uint32_t i; |
548 | uint8_t *d = data; |
549 | |
550 | DPRINTF(("ucycomstart(32): data =" )); |
551 | for (i = 0; i < len; i++) |
552 | DPRINTF((" %02x" , d[i])); |
553 | DPRINTF(("\n" )); |
554 | } |
555 | #endif |
556 | break; |
557 | |
558 | default: |
559 | DPRINTFN(2,("ucycomstart: unknown output report size (%zd)\n" , |
560 | sc->sc_olen)); |
561 | goto out; |
562 | } |
563 | splx(s); |
564 | sc->sc_wlen = len; |
565 | |
566 | #ifdef UCYCOM_DEBUG |
567 | if (ucycomdebug > 5) { |
568 | int i; |
569 | |
570 | if (len != 0) { |
571 | DPRINTF(("ucycomstart: sc->sc_obuf[0..%zd) =" , |
572 | sc->sc_olen)); |
573 | for (i = 0; i < sc->sc_olen; i++) |
574 | DPRINTF((" %02x" , sc->sc_obuf[i])); |
575 | DPRINTF(("\n" )); |
576 | } |
577 | } |
578 | #endif |
579 | DPRINTFN(4,("ucycomstart: %d chars\n" , len)); |
580 | usbd_setup_xfer(sc->sc_hdev.sc_parent->sc_oxfer, sc, sc->sc_obuf, |
581 | sc->sc_olen, 0, USBD_NO_TIMEOUT, ucycomwritecb); |
582 | |
583 | /* What can we do on error? */ |
584 | err = usbd_transfer(sc->sc_hdev.sc_parent->sc_oxfer); |
585 | |
586 | #ifdef UCYCOM_DEBUG |
587 | if (err != USBD_IN_PROGRESS) |
588 | DPRINTF(("ucycomstart: err=%s\n" , usbd_errstr(err))); |
589 | #endif |
590 | return; |
591 | |
592 | out: |
593 | splx(s); |
594 | } |
595 | |
596 | Static void |
597 | ucycomwritecb(struct usbd_xfer *xfer, void *p, usbd_status status) |
598 | { |
599 | struct ucycom_softc *sc = (struct ucycom_softc *)p; |
600 | struct tty *tp = sc->sc_tty; |
601 | usbd_status stat; |
602 | int len, s; |
603 | |
604 | if (status == USBD_CANCELLED || sc->sc_dying) |
605 | goto error; |
606 | |
607 | if (status) { |
608 | DPRINTF(("ucycomwritecb: status=%d\n" , status)); |
609 | usbd_clear_endpoint_stall(sc->sc_hdev.sc_parent->sc_opipe); |
610 | /* XXX we should restart after some delay. */ |
611 | goto error; |
612 | } |
613 | |
614 | usbd_get_xfer_status(xfer, NULL, NULL, &len, &stat); |
615 | |
616 | if (status != USBD_NORMAL_COMPLETION) { |
617 | DPRINTFN(4,("ucycomwritecb: status = %d\n" , status)); |
618 | goto error; |
619 | } |
620 | |
621 | DPRINTFN(4,("ucycomwritecb: did %d/%d chars\n" , sc->sc_wlen, len)); |
622 | |
623 | s = spltty(); |
624 | CLR(tp->t_state, TS_BUSY); |
625 | if (ISSET(tp->t_state, TS_FLUSH)) |
626 | CLR(tp->t_state, TS_FLUSH); |
627 | else |
628 | ndflush(&tp->t_outq, sc->sc_wlen); |
629 | (*tp->t_linesw->l_start)(tp); |
630 | splx(s); |
631 | return; |
632 | |
633 | error: |
634 | s = spltty(); |
635 | CLR(tp->t_state, TS_BUSY); |
636 | splx(s); |
637 | } |
638 | |
639 | Static int |
640 | ucycomparam(struct tty *tp, struct termios *t) |
641 | { |
642 | struct ucycom_softc *sc = tp->t_sc; |
643 | uint32_t baud; |
644 | uint8_t cfg; |
645 | int err; |
646 | |
647 | if (t->c_ospeed < 0) { |
648 | DPRINTF(("ucycomparam: c_ospeed < 0\n" )); |
649 | return EINVAL; |
650 | } |
651 | |
652 | /* Check requested parameters. */ |
653 | if (t->c_ispeed && t->c_ispeed != t->c_ospeed) |
654 | return EINVAL; |
655 | |
656 | /* |
657 | * For the console, always force CLOCAL and !HUPCL, so that the port |
658 | * is always active. |
659 | */ |
660 | if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) { |
661 | SET(t->c_cflag, CLOCAL); |
662 | CLR(t->c_cflag, HUPCL); |
663 | } |
664 | |
665 | /* |
666 | * If there were no changes, don't do anything. This avoids dropping |
667 | * input and improves performance when all we did was frob things like |
668 | * VMIN and VTIME. |
669 | */ |
670 | if (tp->t_ospeed == t->c_ospeed && |
671 | tp->t_cflag == t->c_cflag) |
672 | return 0; |
673 | |
674 | /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */ |
675 | |
676 | /* And copy to tty. */ |
677 | tp->t_ispeed = 0; |
678 | tp->t_ospeed = t->c_ospeed; |
679 | tp->t_cflag = t->c_cflag; |
680 | |
681 | baud = t->c_ispeed; |
682 | DPRINTF(("ucycomparam: baud=%d\n" , baud)); |
683 | |
684 | if (t->c_cflag & CIGNORE) { |
685 | cfg = sc->sc_cfg; |
686 | } else { |
687 | cfg = 0; |
688 | switch (t->c_cflag & CSIZE) { |
689 | case CS8: |
690 | cfg |= UCYCOM_DATA_BITS_8; |
691 | break; |
692 | case CS7: |
693 | cfg |= UCYCOM_DATA_BITS_7; |
694 | break; |
695 | case CS6: |
696 | cfg |= UCYCOM_DATA_BITS_6; |
697 | break; |
698 | case CS5: |
699 | cfg |= UCYCOM_DATA_BITS_5; |
700 | break; |
701 | default: |
702 | return EINVAL; |
703 | } |
704 | cfg |= ISSET(t->c_cflag, CSTOPB) ? |
705 | UCYCOM_STOP_BITS_2 : UCYCOM_STOP_BITS_1; |
706 | cfg |= ISSET(t->c_cflag, PARENB) ? |
707 | UCYCOM_PARITY_ON : UCYCOM_PARITY_OFF; |
708 | cfg |= ISSET(t->c_cflag, PARODD) ? |
709 | UCYCOM_PARITY_ODD : UCYCOM_PARITY_EVEN; |
710 | } |
711 | |
712 | /* |
713 | * Update the tty layer's idea of the carrier bit, in case we changed |
714 | * CLOCAL or MDMBUF. We don't hang up here; we only do that by |
715 | * explicit request. |
716 | */ |
717 | DPRINTF(("ucycomparam: l_modem\n" )); |
718 | (void) (*tp->t_linesw->l_modem)(tp, 1 /* XXX carrier */ ); |
719 | |
720 | err = ucycom_configure(sc, baud, cfg); |
721 | return err; |
722 | } |
723 | |
724 | void |
725 | ucycomstop(struct tty *tp, int flag) |
726 | { |
727 | DPRINTF(("ucycomstop: flag=%d\n" , flag)); |
728 | } |
729 | |
730 | int |
731 | ucycomread(dev_t dev, struct uio *uio, int flag) |
732 | { |
733 | struct ucycom_softc *sc = |
734 | device_lookup_private(&ucycom_cd, UCYCOMUNIT(dev)); |
735 | struct tty *tp = sc->sc_tty; |
736 | int err; |
737 | |
738 | DPRINTF(("ucycomread: sc=%p, tp=%p, uio=%p, flag=%d\n" , sc, tp, uio, |
739 | flag)); |
740 | if (sc->sc_dying) |
741 | return EIO; |
742 | |
743 | err = ((*tp->t_linesw->l_read)(tp, uio, flag)); |
744 | return err; |
745 | } |
746 | |
747 | |
748 | int |
749 | ucycomwrite(dev_t dev, struct uio *uio, int flag) |
750 | { |
751 | struct ucycom_softc *sc = |
752 | device_lookup_private(&ucycom_cd, UCYCOMUNIT(dev)); |
753 | struct tty *tp = sc->sc_tty; |
754 | int err; |
755 | |
756 | DPRINTF(("ucycomwrite: sc=%p, tp=%p, uio=%p, flag=%d\n" , sc, tp, uio, |
757 | flag)); |
758 | if (sc->sc_dying) |
759 | return EIO; |
760 | |
761 | err = ((*tp->t_linesw->l_write)(tp, uio, flag)); |
762 | return err; |
763 | } |
764 | |
765 | struct tty * |
766 | ucycomtty(dev_t dev) |
767 | { |
768 | struct ucycom_softc *sc = |
769 | device_lookup_private(&ucycom_cd, UCYCOMUNIT(dev)); |
770 | struct tty *tp = sc->sc_tty; |
771 | |
772 | DPRINTF(("ucycomtty: sc=%p, tp=%p\n" , sc, tp)); |
773 | |
774 | return tp; |
775 | } |
776 | |
777 | int |
778 | ucycomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) |
779 | { |
780 | struct ucycom_softc *sc = |
781 | device_lookup_private(&ucycom_cd, UCYCOMUNIT(dev)); |
782 | struct tty *tp = sc->sc_tty; |
783 | int err; |
784 | int s; |
785 | |
786 | if (sc->sc_dying) |
787 | return EIO; |
788 | |
789 | DPRINTF(("ucycomioctl: sc=%p, tp=%p, data=%p\n" , sc, tp, data)); |
790 | |
791 | err = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); |
792 | if (err != EPASSTHROUGH) |
793 | return err; |
794 | |
795 | err = ttioctl(tp, cmd, data, flag, l); |
796 | if (err != EPASSTHROUGH) |
797 | return err; |
798 | |
799 | err = 0; |
800 | |
801 | DPRINTF(("ucycomioctl: our cmd=0x%08lx\n" , cmd)); |
802 | s = spltty(); |
803 | |
804 | switch (cmd) { |
805 | /* case TIOCSBRK: |
806 | ucycom_break(sc, 1); |
807 | break; |
808 | |
809 | case TIOCCBRK: |
810 | ucycom_break(sc, 0); |
811 | break; |
812 | */ |
813 | case TIOCSDTR: |
814 | ucycom_dtr(sc, 1); |
815 | break; |
816 | |
817 | case TIOCCDTR: |
818 | ucycom_dtr(sc, 0); |
819 | break; |
820 | |
821 | case TIOCGFLAGS: |
822 | *(int *)data = sc->sc_swflags; |
823 | break; |
824 | |
825 | case TIOCSFLAGS: |
826 | err = kauth_authorize_device_tty(l->l_cred, |
827 | KAUTH_DEVICE_TTY_PRIVSET, tp); |
828 | if (err) |
829 | break; |
830 | sc->sc_swflags = *(int *)data; |
831 | break; |
832 | |
833 | case TIOCMSET: |
834 | case TIOCMBIS: |
835 | case TIOCMBIC: |
836 | tiocm_to_ucycom(sc, cmd, *(int *)data); |
837 | break; |
838 | |
839 | case TIOCMGET: |
840 | *(int *)data = ucycom_to_tiocm(sc); |
841 | break; |
842 | |
843 | default: |
844 | err = EPASSTHROUGH; |
845 | break; |
846 | } |
847 | |
848 | splx(s); |
849 | |
850 | return err; |
851 | } |
852 | |
853 | int |
854 | ucycompoll(dev_t dev, int events, struct lwp *l) |
855 | { |
856 | struct ucycom_softc *sc = |
857 | device_lookup_private(&ucycom_cd, UCYCOMUNIT(dev)); |
858 | struct tty *tp = sc->sc_tty; |
859 | int err; |
860 | |
861 | DPRINTF(("ucycompoll: sc=%p, tp=%p, events=%d, lwp=%p\n" , sc, tp, |
862 | events, l)); |
863 | |
864 | if (sc->sc_dying) |
865 | return EIO; |
866 | |
867 | err = ((*tp->t_linesw->l_poll)(tp, events, l)); |
868 | return err; |
869 | } |
870 | |
871 | Static int |
872 | ucycom_configure(struct ucycom_softc *sc, uint32_t baud, uint8_t cfg) |
873 | { |
874 | uint8_t report[5]; |
875 | int err; |
876 | |
877 | switch (baud) { |
878 | case 600: |
879 | case 1200: |
880 | case 2400: |
881 | case 4800: |
882 | case 9600: |
883 | case 19200: |
884 | case 38400: |
885 | case 57600: |
886 | #if 0 |
887 | /* |
888 | * Stock chips only support standard baud rates in the 600 - 57600 |
889 | * range, but higher rates can be achieved using custom firmware. |
890 | */ |
891 | case 115200: |
892 | case 153600: |
893 | case 192000: |
894 | #endif |
895 | break; |
896 | default: |
897 | return EINVAL; |
898 | } |
899 | |
900 | DPRINTF(("ucycom_configure: setting %d baud, %d-%c-%d (%d)\n" , baud, |
901 | 5 + (cfg & UCYCOM_DATA_MASK), |
902 | (cfg & UCYCOM_PARITY_MASK) ? |
903 | ((cfg & UCYCOM_PARITY_TYPE_MASK) ? 'O' : 'E') : 'N', |
904 | (cfg & UCYCOM_STOP_MASK) ? 2 : 1, cfg)); |
905 | |
906 | report[0] = baud & 0xff; |
907 | report[1] = (baud >> 8) & 0xff; |
908 | report[2] = (baud >> 16) & 0xff; |
909 | report[3] = (baud >> 24) & 0xff; |
910 | report[4] = cfg; |
911 | err = uhidev_set_report(&sc->sc_hdev, UHID_FEATURE_REPORT, |
912 | report, sc->sc_flen); |
913 | if (err != 0) { |
914 | DPRINTF(("%s\n" , usbd_errstr(err))); |
915 | return EIO; |
916 | } |
917 | sc->sc_baud = baud; |
918 | sc->sc_cfg = cfg; |
919 | |
920 | #ifdef UCYCOM_DEBUG |
921 | ucycom_get_cfg(sc); |
922 | #endif |
923 | |
924 | return 0; |
925 | } |
926 | |
927 | Static void |
928 | ucycom_intr(struct uhidev *addr, void *ibuf, u_int len) |
929 | { |
930 | struct ucycom_softc *sc = (struct ucycom_softc *)addr; |
931 | struct tty *tp = sc->sc_tty; |
932 | int (*rint)(int , struct tty *) = tp->t_linesw->l_rint; |
933 | uint8_t *cp = ibuf; |
934 | int s, n, st, chg; |
935 | |
936 | /* We understand 8 byte and 32 byte input records */ |
937 | switch (len) { |
938 | case 8: |
939 | n = cp[0] & UCYCOM_LMASK; |
940 | st = cp[0] & ~UCYCOM_LMASK; |
941 | cp++; |
942 | break; |
943 | |
944 | case 32: |
945 | st = cp[0]; |
946 | n = cp[1]; |
947 | cp += 2; |
948 | break; |
949 | |
950 | default: |
951 | DPRINTFN(3,("ucycom_intr: Unknown input report length\n" )); |
952 | return; |
953 | } |
954 | |
955 | #ifdef UCYCOM_DEBUG |
956 | if (ucycomdebug > 5) { |
957 | uint32_t i; |
958 | |
959 | if (n != 0) { |
960 | DPRINTF(("ucycom_intr: ibuf[0..%d) =" , n)); |
961 | for (i = 0; i < n; i++) |
962 | DPRINTF((" %02x" , cp[i])); |
963 | DPRINTF(("\n" )); |
964 | } |
965 | } |
966 | #endif |
967 | |
968 | /* Give characters to tty layer. */ |
969 | s = spltty(); |
970 | while (n-- > 0) { |
971 | DPRINTFN(7,("ucycom_intr: char=0x%02x\n" , *cp)); |
972 | if ((*rint)(*cp++, tp) == -1) { |
973 | /* XXX what should we do? */ |
974 | aprint_error_dev(sc->sc_hdev.sc_dev, |
975 | "lost a character\n" ); |
976 | break; |
977 | } |
978 | } |
979 | splx(s); |
980 | chg = st ^ sc->sc_msr; |
981 | sc->sc_msr = st; |
982 | if (ISSET(chg, UCYCOM_DCD)) |
983 | (*tp->t_linesw->l_modem)(tp, |
984 | ISSET(sc->sc_msr, UCYCOM_DCD)); |
985 | |
986 | } |
987 | |
988 | Static void |
989 | tiocm_to_ucycom(struct ucycom_softc *sc, u_long how, int ttybits) |
990 | { |
991 | u_char combits; |
992 | u_char before = sc->sc_mcr; |
993 | |
994 | combits = 0; |
995 | if (ISSET(ttybits, TIOCM_DTR)) |
996 | SET(combits, UCYCOM_DTR); |
997 | if (ISSET(ttybits, TIOCM_RTS)) |
998 | SET(combits, UCYCOM_RTS); |
999 | |
1000 | switch (how) { |
1001 | case TIOCMBIC: |
1002 | CLR(sc->sc_mcr, combits); |
1003 | break; |
1004 | |
1005 | case TIOCMBIS: |
1006 | SET(sc->sc_mcr, combits); |
1007 | break; |
1008 | |
1009 | case TIOCMSET: |
1010 | CLR(sc->sc_mcr, UCYCOM_DTR | UCYCOM_RTS); |
1011 | SET(sc->sc_mcr, combits); |
1012 | break; |
1013 | } |
1014 | if (before ^ sc->sc_mcr) { |
1015 | DPRINTF(("tiocm_to_ucycom: something has changed\n" )); |
1016 | ucycom_set_status(sc); |
1017 | } |
1018 | } |
1019 | |
1020 | Static int |
1021 | ucycom_to_tiocm(struct ucycom_softc *sc) |
1022 | { |
1023 | u_char combits; |
1024 | int ttybits = 0; |
1025 | |
1026 | combits = sc->sc_mcr; |
1027 | if (ISSET(combits, UCYCOM_DTR)) |
1028 | SET(ttybits, TIOCM_DTR); |
1029 | if (ISSET(combits, UCYCOM_RTS)) |
1030 | SET(ttybits, TIOCM_RTS); |
1031 | |
1032 | combits = sc->sc_msr; |
1033 | if (ISSET(combits, UCYCOM_DCD)) |
1034 | SET(ttybits, TIOCM_CD); |
1035 | if (ISSET(combits, UCYCOM_CTS)) |
1036 | SET(ttybits, TIOCM_CTS); |
1037 | if (ISSET(combits, UCYCOM_DSR)) |
1038 | SET(ttybits, TIOCM_DSR); |
1039 | if (ISSET(combits, UCYCOM_RI)) |
1040 | SET(ttybits, TIOCM_RI); |
1041 | |
1042 | return ttybits; |
1043 | } |
1044 | |
1045 | Static void |
1046 | ucycom_dtr(struct ucycom_softc *sc, int set) |
1047 | { |
1048 | uint8_t old; |
1049 | |
1050 | old = sc->sc_mcr; |
1051 | if (set) |
1052 | SET(sc->sc_mcr, UCYCOM_DTR); |
1053 | else |
1054 | CLR(sc->sc_mcr, UCYCOM_DTR); |
1055 | |
1056 | if (old ^ sc->sc_mcr) |
1057 | ucycom_set_status(sc); |
1058 | } |
1059 | |
1060 | #if 0 |
1061 | Static void |
1062 | ucycom_rts(struct ucycom_softc *sc, int set) |
1063 | { |
1064 | uint8_t old; |
1065 | |
1066 | old = sc->sc_msr; |
1067 | if (set) |
1068 | SET(sc->sc_mcr, UCYCOM_RTS); |
1069 | else |
1070 | CLR(sc->sc_mcr, UCYCOM_RTS); |
1071 | |
1072 | if (old ^ sc->sc_mcr) |
1073 | ucycom_set_status(sc); |
1074 | } |
1075 | #endif |
1076 | |
1077 | Static void |
1078 | ucycom_set_status(struct ucycom_softc *sc) |
1079 | { |
1080 | int err; |
1081 | |
1082 | if (sc->sc_olen != 8 && sc->sc_olen != 32) { |
1083 | DPRINTFN(2,("ucycom_set_status: unknown output report " |
1084 | "size (%zd)\n" , sc->sc_olen)); |
1085 | return; |
1086 | } |
1087 | |
1088 | DPRINTF(("ucycom_set_status: %d\n" , sc->sc_mcr)); |
1089 | |
1090 | memset(sc->sc_obuf, 0, sc->sc_olen); |
1091 | sc->sc_obuf[0] = sc->sc_mcr; |
1092 | |
1093 | err = uhidev_write(sc->sc_hdev.sc_parent, sc->sc_obuf, sc->sc_olen); |
1094 | if (err) { |
1095 | DPRINTF(("ucycom_set_status: err=%d\n" , err)); |
1096 | } |
1097 | } |
1098 | |
1099 | #ifdef UCYCOM_DEBUG |
1100 | Static void |
1101 | ucycom_get_cfg(struct ucycom_softc *sc) |
1102 | { |
1103 | int err, cfg, baud; |
1104 | uint8_t report[5]; |
1105 | |
1106 | err = uhidev_get_report(&sc->sc_hdev, UHID_FEATURE_REPORT, |
1107 | report, sc->sc_flen); |
1108 | if (err) { |
1109 | DPRINTF(("%s: failed\n" , __func__)); |
1110 | return; |
1111 | } |
1112 | cfg = report[4]; |
1113 | baud = (report[3] << 24) + (report[2] << 16) + (report[1] << 8) + |
1114 | report[0]; |
1115 | DPRINTF(("ucycom_get_cfg: device reports %d baud, %d-%c-%d (%d)\n" , |
1116 | baud, 5 + (cfg & UCYCOM_DATA_MASK), |
1117 | (cfg & UCYCOM_PARITY_MASK) ? |
1118 | ((cfg & UCYCOM_PARITY_TYPE_MASK) ? 'O' : 'E') : 'N', |
1119 | (cfg & UCYCOM_STOP_MASK) ? 2 : 1, cfg)); |
1120 | } |
1121 | #endif |
1122 | |
1123 | Static void |
1124 | ucycom_cleanup(struct ucycom_softc *sc) |
1125 | { |
1126 | uint8_t *obuf; |
1127 | |
1128 | DPRINTF(("ucycom_cleanup: closing uhidev\n" )); |
1129 | |
1130 | obuf = sc->sc_obuf; |
1131 | sc->sc_obuf = NULL; |
1132 | uhidev_close(&sc->sc_hdev); |
1133 | |
1134 | if (obuf != NULL) |
1135 | kmem_free(obuf, sc->sc_olen); |
1136 | } |
1137 | |