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a09e091a JB |
1 | /* |
2 | * Copyright 1993-2003 by The XFree86 Project, Inc. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
17 | * THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
18 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF | |
19 | * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
21 | * | |
22 | * Except as contained in this notice, the name of the XFree86 Project shall | |
23 | * not be used in advertising or otherwise to promote the sale, use or other | |
24 | * dealings in this Software without prior written authorization from the | |
25 | * XFree86 Project. | |
26 | */ | |
27 | /* | |
28 | * | |
29 | * Copyright (c) 1997 Metro Link Incorporated | |
30 | * | |
31 | * Permission is hereby granted, free of charge, to any person obtaining a | |
32 | * copy of this software and associated documentation files (the "Software"), | |
33 | * to deal in the Software without restriction, including without limitation | |
34 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
35 | * and/or sell copies of the Software, and to permit persons to whom the | |
36 | * Software is furnished to do so, subject to the following conditions: | |
37 | * | |
38 | * The above copyright notice and this permission notice shall be included in | |
39 | * all copies or substantial portions of the Software. | |
40 | * | |
41 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
42 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
43 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
44 | * THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
45 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF | |
46 | * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
47 | * SOFTWARE. | |
48 | * | |
49 | * Except as contained in this notice, the name of the Metro Link shall not be | |
50 | * used in advertising or otherwise to promote the sale, use or other dealings | |
51 | * in this Software without prior written authorization from Metro Link. | |
52 | * | |
53 | */ | |
54 | ||
55 | #ifdef HAVE_XORG_CONFIG_H | |
56 | #include <xorg-config.h> | |
57 | #endif | |
58 | ||
59 | #include <X11/X.h> | |
60 | #include "xf86.h" | |
61 | #include "xf86Priv.h" | |
62 | #include "xf86_OSlib.h" | |
63 | ||
64 | static int | |
65 | GetBaud(int baudrate) | |
66 | { | |
67 | #ifdef B300 | |
68 | if (baudrate == 300) | |
69 | return B300; | |
70 | #endif | |
71 | #ifdef B1200 | |
72 | if (baudrate == 1200) | |
73 | return B1200; | |
74 | #endif | |
75 | #ifdef B2400 | |
76 | if (baudrate == 2400) | |
77 | return B2400; | |
78 | #endif | |
79 | #ifdef B4800 | |
80 | if (baudrate == 4800) | |
81 | return B4800; | |
82 | #endif | |
83 | #ifdef B9600 | |
84 | if (baudrate == 9600) | |
85 | return B9600; | |
86 | #endif | |
87 | #ifdef B19200 | |
88 | if (baudrate == 19200) | |
89 | return B19200; | |
90 | #endif | |
91 | #ifdef B38400 | |
92 | if (baudrate == 38400) | |
93 | return B38400; | |
94 | #endif | |
95 | #ifdef B57600 | |
96 | if (baudrate == 57600) | |
97 | return B57600; | |
98 | #endif | |
99 | #ifdef B115200 | |
100 | if (baudrate == 115200) | |
101 | return B115200; | |
102 | #endif | |
103 | #ifdef B230400 | |
104 | if (baudrate == 230400) | |
105 | return B230400; | |
106 | #endif | |
107 | #ifdef B460800 | |
108 | if (baudrate == 460800) | |
109 | return B460800; | |
110 | #endif | |
111 | return 0; | |
112 | } | |
113 | ||
114 | int | |
115 | xf86OpenSerial(XF86OptionPtr options) | |
116 | { | |
117 | struct termios t; | |
118 | int fd, i; | |
119 | char *dev; | |
120 | ||
121 | dev = xf86SetStrOption(options, "Device", NULL); | |
122 | if (!dev) { | |
123 | xf86Msg(X_ERROR, "xf86OpenSerial: No Device specified.\n"); | |
124 | return -1; | |
125 | } | |
126 | ||
127 | SYSCALL(fd = open(dev, O_RDWR | O_NONBLOCK)); | |
128 | if (fd == -1) { | |
129 | xf86Msg(X_ERROR, | |
130 | "xf86OpenSerial: Cannot open device %s\n\t%s.\n", | |
131 | dev, strerror(errno)); | |
132 | free(dev); | |
133 | return -1; | |
134 | } | |
135 | ||
136 | if (!isatty(fd)) { | |
137 | /* Allow non-tty devices to be opened. */ | |
138 | free(dev); | |
139 | return fd; | |
140 | } | |
141 | ||
142 | /* set up default port parameters */ | |
143 | SYSCALL(tcgetattr(fd, &t)); | |
144 | t.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | |
145 | | IGNCR | ICRNL | IXON); | |
146 | t.c_oflag &= ~OPOST; | |
147 | t.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN); | |
148 | t.c_cflag &= ~(CSIZE | PARENB); | |
149 | t.c_cflag |= CS8 | CLOCAL; | |
150 | ||
151 | cfsetispeed(&t, B9600); | |
152 | cfsetospeed(&t, B9600); | |
153 | t.c_cc[VMIN] = 1; | |
154 | t.c_cc[VTIME] = 0; | |
155 | ||
156 | SYSCALL(tcsetattr(fd, TCSANOW, &t)); | |
157 | ||
158 | if (xf86SetSerial(fd, options) == -1) { | |
159 | SYSCALL(close(fd)); | |
160 | free(dev); | |
161 | return -1; | |
162 | } | |
163 | ||
164 | SYSCALL(i = fcntl(fd, F_GETFL, 0)); | |
165 | if (i == -1) { | |
166 | SYSCALL(close(fd)); | |
167 | free(dev); | |
168 | return -1; | |
169 | } | |
170 | i &= ~O_NONBLOCK; | |
171 | SYSCALL(i = fcntl(fd, F_SETFL, i)); | |
172 | if (i == -1) { | |
173 | SYSCALL(close(fd)); | |
174 | free(dev); | |
175 | return -1; | |
176 | } | |
177 | free(dev); | |
178 | return fd; | |
179 | } | |
180 | ||
181 | int | |
182 | xf86SetSerial(int fd, XF86OptionPtr options) | |
183 | { | |
184 | struct termios t; | |
185 | int val; | |
186 | const char *s; | |
187 | int baud, r; | |
188 | ||
189 | if (fd < 0) | |
190 | return -1; | |
191 | ||
192 | /* Don't try to set parameters for non-tty devices. */ | |
193 | if (!isatty(fd)) | |
194 | return 0; | |
195 | ||
196 | SYSCALL(tcgetattr(fd, &t)); | |
197 | ||
198 | if ((val = xf86SetIntOption(options, "BaudRate", 0))) { | |
199 | if ((baud = GetBaud(val))) { | |
200 | cfsetispeed(&t, baud); | |
201 | cfsetospeed(&t, baud); | |
202 | } | |
203 | else { | |
204 | xf86Msg(X_ERROR, "Invalid Option BaudRate value: %d\n", val); | |
205 | return -1; | |
206 | } | |
207 | } | |
208 | ||
209 | if ((val = xf86SetIntOption(options, "StopBits", 0))) { | |
210 | switch (val) { | |
211 | case 1: | |
212 | t.c_cflag &= ~(CSTOPB); | |
213 | break; | |
214 | case 2: | |
215 | t.c_cflag |= CSTOPB; | |
216 | break; | |
217 | default: | |
218 | xf86Msg(X_ERROR, "Invalid Option StopBits value: %d\n", val); | |
219 | return -1; | |
220 | break; | |
221 | } | |
222 | } | |
223 | ||
224 | if ((val = xf86SetIntOption(options, "DataBits", 0))) { | |
225 | switch (val) { | |
226 | case 5: | |
227 | t.c_cflag &= ~(CSIZE); | |
228 | t.c_cflag |= CS5; | |
229 | break; | |
230 | case 6: | |
231 | t.c_cflag &= ~(CSIZE); | |
232 | t.c_cflag |= CS6; | |
233 | break; | |
234 | case 7: | |
235 | t.c_cflag &= ~(CSIZE); | |
236 | t.c_cflag |= CS7; | |
237 | break; | |
238 | case 8: | |
239 | t.c_cflag &= ~(CSIZE); | |
240 | t.c_cflag |= CS8; | |
241 | break; | |
242 | default: | |
243 | xf86Msg(X_ERROR, "Invalid Option DataBits value: %d\n", val); | |
244 | return -1; | |
245 | break; | |
246 | } | |
247 | } | |
248 | ||
249 | if ((s = xf86SetStrOption(options, "Parity", NULL))) { | |
250 | if (xf86NameCmp(s, "Odd") == 0) { | |
251 | t.c_cflag |= PARENB | PARODD; | |
252 | } | |
253 | else if (xf86NameCmp(s, "Even") == 0) { | |
254 | t.c_cflag |= PARENB; | |
255 | t.c_cflag &= ~(PARODD); | |
256 | } | |
257 | else if (xf86NameCmp(s, "None") == 0) { | |
258 | t.c_cflag &= ~(PARENB); | |
259 | } | |
260 | else { | |
261 | xf86Msg(X_ERROR, "Invalid Option Parity value: %s\n", s); | |
262 | return -1; | |
263 | } | |
264 | } | |
265 | ||
266 | if ((val = xf86SetIntOption(options, "Vmin", -1)) != -1) { | |
267 | t.c_cc[VMIN] = val; | |
268 | } | |
269 | if ((val = xf86SetIntOption(options, "Vtime", -1)) != -1) { | |
270 | t.c_cc[VTIME] = val; | |
271 | } | |
272 | ||
273 | if ((s = xf86SetStrOption(options, "FlowControl", NULL))) { | |
274 | xf86MarkOptionUsedByName(options, "FlowControl"); | |
275 | if (xf86NameCmp(s, "Xoff") == 0) { | |
276 | t.c_iflag |= IXOFF; | |
277 | } | |
278 | else if (xf86NameCmp(s, "Xon") == 0) { | |
279 | t.c_iflag |= IXON; | |
280 | } | |
281 | else if (xf86NameCmp(s, "XonXoff") == 0) { | |
282 | t.c_iflag |= IXON | IXOFF; | |
283 | } | |
284 | else if (xf86NameCmp(s, "None") == 0) { | |
285 | t.c_iflag &= ~(IXON | IXOFF); | |
286 | } | |
287 | else { | |
288 | xf86Msg(X_ERROR, "Invalid Option FlowControl value: %s\n", s); | |
289 | return -1; | |
290 | } | |
291 | } | |
292 | ||
293 | if ((xf86SetBoolOption(options, "ClearDTR", FALSE))) { | |
294 | #ifdef CLEARDTR_SUPPORT | |
295 | #if defined(TIOCMBIC) | |
296 | val = TIOCM_DTR; | |
297 | SYSCALL(ioctl(fd, TIOCMBIC, &val)); | |
298 | #else | |
299 | SYSCALL(ioctl(fd, TIOCCDTR, NULL)); | |
300 | #endif | |
301 | #else | |
302 | xf86Msg(X_WARNING, "Option ClearDTR not supported on this OS\n"); | |
303 | return -1; | |
304 | #endif | |
305 | xf86MarkOptionUsedByName(options, "ClearDTR"); | |
306 | } | |
307 | ||
308 | if ((xf86SetBoolOption(options, "ClearRTS", FALSE))) { | |
309 | xf86Msg(X_WARNING, "Option ClearRTS not supported on this OS\n"); | |
310 | return -1; | |
311 | xf86MarkOptionUsedByName(options, "ClearRTS"); | |
312 | } | |
313 | ||
314 | SYSCALL(r = tcsetattr(fd, TCSANOW, &t)); | |
315 | return r; | |
316 | } | |
317 | ||
318 | int | |
319 | xf86SetSerialSpeed(int fd, int speed) | |
320 | { | |
321 | struct termios t; | |
322 | int baud, r; | |
323 | ||
324 | if (fd < 0) | |
325 | return -1; | |
326 | ||
327 | /* Don't try to set parameters for non-tty devices. */ | |
328 | if (!isatty(fd)) | |
329 | return 0; | |
330 | ||
331 | SYSCALL(tcgetattr(fd, &t)); | |
332 | ||
333 | if ((baud = GetBaud(speed))) { | |
334 | cfsetispeed(&t, baud); | |
335 | cfsetospeed(&t, baud); | |
336 | } | |
337 | else { | |
338 | xf86Msg(X_ERROR, "Invalid Option BaudRate value: %d\n", speed); | |
339 | return -1; | |
340 | } | |
341 | ||
342 | SYSCALL(r = tcsetattr(fd, TCSANOW, &t)); | |
343 | return r; | |
344 | } | |
345 | ||
346 | int | |
347 | xf86ReadSerial(int fd, void *buf, int count) | |
348 | { | |
349 | int r; | |
350 | int i; | |
351 | ||
352 | SYSCALL(r = read(fd, buf, count)); | |
353 | DebugF("ReadingSerial: 0x%x", (unsigned char) *(((unsigned char *) buf))); | |
354 | for (i = 1; i < r; i++) | |
355 | DebugF(", 0x%x", (unsigned char) *(((unsigned char *) buf) + i)); | |
356 | DebugF("\n"); | |
357 | return r; | |
358 | } | |
359 | ||
360 | int | |
361 | xf86WriteSerial(int fd, const void *buf, int count) | |
362 | { | |
363 | int r; | |
364 | int i; | |
365 | ||
366 | DebugF("WritingSerial: 0x%x", (unsigned char) *(((unsigned char *) buf))); | |
367 | for (i = 1; i < count; i++) | |
368 | DebugF(", 0x%x", (unsigned char) *(((unsigned char *) buf) + i)); | |
369 | DebugF("\n"); | |
370 | SYSCALL(r = write(fd, buf, count)); | |
371 | return r; | |
372 | } | |
373 | ||
374 | int | |
375 | xf86CloseSerial(int fd) | |
376 | { | |
377 | int r; | |
378 | ||
379 | SYSCALL(r = close(fd)); | |
380 | return r; | |
381 | } | |
382 | ||
383 | int | |
384 | xf86WaitForInput(int fd, int timeout) | |
385 | { | |
386 | fd_set readfds; | |
387 | struct timeval to; | |
388 | int r; | |
389 | ||
390 | FD_ZERO(&readfds); | |
391 | ||
392 | if (fd >= 0) { | |
393 | FD_SET(fd, &readfds); | |
394 | } | |
395 | ||
396 | to.tv_sec = timeout / 1000000; | |
397 | to.tv_usec = timeout % 1000000; | |
398 | ||
399 | if (fd >= 0) { | |
400 | SYSCALL(r = select(FD_SETSIZE, &readfds, NULL, NULL, &to)); | |
401 | } | |
402 | else { | |
403 | SYSCALL(r = select(FD_SETSIZE, NULL, NULL, NULL, &to)); | |
404 | } | |
405 | xf86ErrorFVerb(9, "select returned %d\n", r); | |
406 | return r; | |
407 | } | |
408 | ||
409 | int | |
410 | xf86SerialSendBreak(int fd, int duration) | |
411 | { | |
412 | int r; | |
413 | ||
414 | SYSCALL(r = tcsendbreak(fd, duration)); | |
415 | return r; | |
416 | ||
417 | } | |
418 | ||
419 | int | |
420 | xf86FlushInput(int fd) | |
421 | { | |
422 | fd_set fds; | |
423 | struct timeval timeout; | |
424 | /* this needs to be big enough to flush an evdev event. */ | |
425 | char c[256]; | |
426 | ||
427 | DebugF("FlushingSerial\n"); | |
428 | if (tcflush(fd, TCIFLUSH) == 0) | |
429 | return 0; | |
430 | ||
431 | timeout.tv_sec = 0; | |
432 | timeout.tv_usec = 0; | |
433 | FD_ZERO(&fds); | |
434 | FD_SET(fd, &fds); | |
435 | while (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) { | |
436 | if (read(fd, &c, sizeof(c)) < 1) | |
437 | return 0; | |
438 | FD_ZERO(&fds); | |
439 | FD_SET(fd, &fds); | |
440 | } | |
441 | return 0; | |
442 | } | |
443 | ||
444 | static struct states { | |
445 | int xf; | |
446 | int os; | |
447 | } modemStates[] = { | |
448 | #ifdef TIOCM_LE | |
449 | { | |
450 | XF86_M_LE, TIOCM_LE}, | |
451 | #endif | |
452 | #ifdef TIOCM_DTR | |
453 | { | |
454 | XF86_M_DTR, TIOCM_DTR}, | |
455 | #endif | |
456 | #ifdef TIOCM_RTS | |
457 | { | |
458 | XF86_M_RTS, TIOCM_RTS}, | |
459 | #endif | |
460 | #ifdef TIOCM_ST | |
461 | { | |
462 | XF86_M_ST, TIOCM_ST}, | |
463 | #endif | |
464 | #ifdef TIOCM_SR | |
465 | { | |
466 | XF86_M_SR, TIOCM_SR}, | |
467 | #endif | |
468 | #ifdef TIOCM_CTS | |
469 | { | |
470 | XF86_M_CTS, TIOCM_CTS}, | |
471 | #endif | |
472 | #ifdef TIOCM_CAR | |
473 | { | |
474 | XF86_M_CAR, TIOCM_CAR}, | |
475 | #elif defined(TIOCM_CD) | |
476 | { | |
477 | XF86_M_CAR, TIOCM_CD}, | |
478 | #endif | |
479 | #ifdef TIOCM_RNG | |
480 | { | |
481 | XF86_M_RNG, TIOCM_RNG}, | |
482 | #elif defined(TIOCM_RI) | |
483 | { | |
484 | XF86_M_CAR, TIOCM_RI}, | |
485 | #endif | |
486 | #ifdef TIOCM_DSR | |
487 | { | |
488 | XF86_M_DSR, TIOCM_DSR}, | |
489 | #endif | |
490 | }; | |
491 | ||
492 | static int numStates = sizeof(modemStates) / sizeof(modemStates[0]); | |
493 | ||
494 | static int | |
495 | xf2osState(int state) | |
496 | { | |
497 | int i; | |
498 | int ret = 0; | |
499 | ||
500 | for (i = 0; i < numStates; i++) | |
501 | if (state & modemStates[i].xf) | |
502 | ret |= modemStates[i].os; | |
503 | return ret; | |
504 | } | |
505 | ||
506 | static int | |
507 | os2xfState(int state) | |
508 | { | |
509 | int i; | |
510 | int ret = 0; | |
511 | ||
512 | for (i = 0; i < numStates; i++) | |
513 | if (state & modemStates[i].os) | |
514 | ret |= modemStates[i].xf; | |
515 | return ret; | |
516 | } | |
517 | ||
518 | static int | |
519 | getOsStateMask(void) | |
520 | { | |
521 | int i; | |
522 | int ret = 0; | |
523 | ||
524 | for (i = 0; i < numStates; i++) | |
525 | ret |= modemStates[i].os; | |
526 | return ret; | |
527 | } | |
528 | ||
529 | static int osStateMask = 0; | |
530 | ||
531 | int | |
532 | xf86SetSerialModemState(int fd, int state) | |
533 | { | |
534 | int ret; | |
535 | int s; | |
536 | ||
537 | if (fd < 0) | |
538 | return -1; | |
539 | ||
540 | /* Don't try to set parameters for non-tty devices. */ | |
541 | if (!isatty(fd)) | |
542 | return 0; | |
543 | ||
544 | #ifndef TIOCMGET | |
545 | return -1; | |
546 | #else | |
547 | if (!osStateMask) | |
548 | osStateMask = getOsStateMask(); | |
549 | ||
550 | state = xf2osState(state); | |
551 | SYSCALL((ret = ioctl(fd, TIOCMGET, &s))); | |
552 | if (ret < 0) | |
553 | return -1; | |
554 | s &= ~osStateMask; | |
555 | s |= state; | |
556 | SYSCALL((ret = ioctl(fd, TIOCMSET, &s))); | |
557 | if (ret < 0) | |
558 | return -1; | |
559 | else | |
560 | return 0; | |
561 | #endif | |
562 | } | |
563 | ||
564 | int | |
565 | xf86GetSerialModemState(int fd) | |
566 | { | |
567 | int ret; | |
568 | int s; | |
569 | ||
570 | if (fd < 0) | |
571 | return -1; | |
572 | ||
573 | /* Don't try to set parameters for non-tty devices. */ | |
574 | if (!isatty(fd)) | |
575 | return 0; | |
576 | ||
577 | #ifndef TIOCMGET | |
578 | return -1; | |
579 | #else | |
580 | SYSCALL((ret = ioctl(fd, TIOCMGET, &s))); | |
581 | if (ret < 0) | |
582 | return -1; | |
583 | return os2xfState(s); | |
584 | #endif | |
585 | } | |
586 | ||
587 | int | |
588 | xf86SerialModemSetBits(int fd, int bits) | |
589 | { | |
590 | int ret; | |
591 | int s; | |
592 | ||
593 | if (fd < 0) | |
594 | return -1; | |
595 | ||
596 | /* Don't try to set parameters for non-tty devices. */ | |
597 | if (!isatty(fd)) | |
598 | return 0; | |
599 | ||
600 | #ifndef TIOCMGET | |
601 | return -1; | |
602 | #else | |
603 | s = xf2osState(bits); | |
604 | SYSCALL((ret = ioctl(fd, TIOCMBIS, &s))); | |
605 | return ret; | |
606 | #endif | |
607 | } | |
608 | ||
609 | int | |
610 | xf86SerialModemClearBits(int fd, int bits) | |
611 | { | |
612 | int ret; | |
613 | int s; | |
614 | ||
615 | if (fd < 0) | |
616 | return -1; | |
617 | ||
618 | /* Don't try to set parameters for non-tty devices. */ | |
619 | if (!isatty(fd)) | |
620 | return 0; | |
621 | ||
622 | #ifndef TIOCMGET | |
623 | return -1; | |
624 | #else | |
625 | s = xf2osState(bits); | |
626 | SYSCALL((ret = ioctl(fd, TIOCMBIC, &s))); | |
627 | return ret; | |
628 | #endif | |
629 | } |