Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
0880b18e | 2 | * Copyright (c) 1982, 1986 Regents of the University of California. |
da7c5cc6 KM |
3 | * All rights reserved. The Berkeley software License Agreement |
4 | * specifies the terms and conditions for redistribution. | |
5 | * | |
c4ec2128 | 6 | * @(#)tty_tb.c 7.5 (Berkeley) %G% |
da7c5cc6 | 7 | */ |
4f9a21f0 SL |
8 | |
9 | #include "tb.h" | |
10 | #if NTB > 0 | |
11 | ||
a5fcb39b SL |
12 | /* |
13 | * Line discipline for RS232 tablets; | |
14 | * supplies binary coordinate data. | |
15 | */ | |
94368568 | 16 | #include "param.h" |
94368568 | 17 | #include "user.h" |
a5fcb39b | 18 | #include "tablet.h" |
94368568 | 19 | #include "tty.h" |
4f9a21f0 SL |
20 | |
21 | /* | |
a5fcb39b | 22 | * Tablet configuration table. |
4f9a21f0 | 23 | */ |
a5fcb39b SL |
24 | struct tbconf { |
25 | short tbc_recsize; /* input record size in bytes */ | |
26 | short tbc_uiosize; /* size of data record returned user */ | |
27 | int tbc_sync; /* mask for finding sync byte/bit */ | |
28 | int (*tbc_decode)();/* decoding routine */ | |
29 | char *tbc_run; /* enter run mode sequence */ | |
30 | char *tbc_point; /* enter point mode sequence */ | |
31 | char *tbc_stop; /* stop sequence */ | |
32 | char *tbc_start; /* start/restart sequence */ | |
33 | int tbc_flags; | |
729ea429 SL |
34 | #define TBF_POL 0x1 /* polhemus hack */ |
35 | #define TBF_INPROX 0x2 /* tablet has proximity info */ | |
a5fcb39b | 36 | }; |
4f9a21f0 | 37 | |
a5fcb39b SL |
38 | static int tbdecode(), gtcodecode(), poldecode(); |
39 | static int tblresdecode(), tbhresdecode(); | |
13b9086b | 40 | |
a5fcb39b SL |
41 | struct tbconf tbconf[TBTYPE] = { |
42 | { 0 }, | |
43 | { 5, sizeof (struct tbpos), 0200, tbdecode, "6", "4" }, | |
44 | { 5, sizeof (struct tbpos), 0200, tbdecode, "\1CN", "\1RT", "\2", "\4" }, | |
45 | { 8, sizeof (struct gtcopos), 0200, gtcodecode }, | |
46 | {17, sizeof (struct polpos), 0200, poldecode, 0, 0, "\21", "\5\22\2\23", | |
729ea429 SL |
47 | TBF_POL }, |
48 | { 5, sizeof (struct tbpos), 0100, tblresdecode, "\1CN", "\1PT", "\2", "\4", | |
49 | TBF_INPROX }, | |
50 | { 6, sizeof (struct tbpos), 0200, tbhresdecode, "\1CN", "\1PT", "\2", "\4", | |
51 | TBF_INPROX }, | |
52 | { 5, sizeof (struct tbpos), 0100, tblresdecode, "\1CL\33", "\1PT\33", 0, 0}, | |
53 | { 6, sizeof (struct tbpos), 0200, tbhresdecode, "\1CL\33", "\1PT\33", 0, 0}, | |
a5fcb39b SL |
54 | }; |
55 | ||
56 | /* | |
57 | * Tablet state | |
58 | */ | |
13b9086b | 59 | struct tb { |
a5fcb39b SL |
60 | int tbflags; /* mode & type bits */ |
61 | #define TBMAXREC 17 /* max input record size */ | |
62 | char cbuf[TBMAXREC]; /* input buffer */ | |
63 | union { | |
64 | struct tbpos tbpos; | |
65 | struct gtcopos gtcopos; | |
66 | struct polpos polpos; | |
67 | } rets; /* processed state */ | |
68 | #define NTBS 16 | |
13b9086b | 69 | } tb[NTBS]; |
4f9a21f0 SL |
70 | |
71 | /* | |
a5fcb39b | 72 | * Open as tablet discipline; called on discipline change. |
4f9a21f0 SL |
73 | */ |
74 | /*ARGSUSED*/ | |
75 | tbopen(dev, tp) | |
942f05a9 SL |
76 | dev_t dev; |
77 | register struct tty *tp; | |
4f9a21f0 | 78 | { |
13b9086b | 79 | register struct tb *tbp; |
4f9a21f0 | 80 | |
a5fcb39b | 81 | if (tp->t_line == TABLDISC) |
13b9086b | 82 | return (ENODEV); |
88a7a62a | 83 | ttywflush(tp); |
13b9086b | 84 | for (tbp = tb; tbp < &tb[NTBS]; tbp++) |
a5fcb39b | 85 | if (tbp->tbflags == 0) |
13b9086b SL |
86 | break; |
87 | if (tbp >= &tb[NTBS]) | |
88 | return (EBUSY); | |
a5fcb39b | 89 | tbp->tbflags = TBTIGER|TBPOINT; /* default */ |
13b9086b | 90 | tp->t_cp = tbp->cbuf; |
4f9a21f0 | 91 | tp->t_inbuf = 0; |
a5fcb39b SL |
92 | bzero((caddr_t)&tbp->rets, sizeof (tbp->rets)); |
93 | tp->T_LINEP = (caddr_t)tbp; | |
94 | tp->t_flags |= LITOUT; | |
830bbc16 | 95 | return (0); |
4f9a21f0 SL |
96 | } |
97 | ||
98 | /* | |
a5fcb39b | 99 | * Line discipline change or last device close. |
4f9a21f0 SL |
100 | */ |
101 | tbclose(tp) | |
830bbc16 | 102 | register struct tty *tp; |
4f9a21f0 | 103 | { |
a5fcb39b SL |
104 | register int s; |
105 | int modebits = TBPOINT|TBSTOP; | |
4f9a21f0 | 106 | |
a5fcb39b | 107 | tbioctl(tp, BIOSMODE, &modebits, 0); |
fb1db32c | 108 | s = spltty(); |
a5fcb39b | 109 | ((struct tb *)tp->T_LINEP)->tbflags = 0; |
4f9a21f0 SL |
110 | tp->t_cp = 0; |
111 | tp->t_inbuf = 0; | |
112 | tp->t_rawq.c_cc = 0; /* clear queues -- paranoid */ | |
113 | tp->t_canq.c_cc = 0; | |
4a5e6198 | 114 | tp->t_line = 0; /* paranoid: avoid races */ |
4f9a21f0 SL |
115 | splx(s); |
116 | } | |
117 | ||
118 | /* | |
119 | * Read from a tablet line. | |
a5fcb39b | 120 | * Characters have been buffered in a buffer and decoded. |
4f9a21f0 | 121 | */ |
740e4029 BJ |
122 | tbread(tp, uio) |
123 | register struct tty *tp; | |
124 | struct uio *uio; | |
4f9a21f0 | 125 | { |
a5fcb39b SL |
126 | register struct tb *tbp = (struct tb *)tp->T_LINEP; |
127 | register struct tbconf *tc = &tbconf[tbp->tbflags & TBTYPE]; | |
128 | int ret; | |
4f9a21f0 | 129 | |
a5fcb39b | 130 | if ((tp->t_state&TS_CARR_ON) == 0) |
840510a3 | 131 | return (EIO); |
c4ec2128 | 132 | ret = uiomove(&tbp->rets, tc->tbc_uiosize, uio); |
a5fcb39b SL |
133 | if (tc->tbc_flags&TBF_POL) |
134 | tbp->rets.polpos.p_key = ' '; | |
135 | return (ret); | |
4f9a21f0 SL |
136 | } |
137 | ||
138 | /* | |
139 | * Low level character input routine. | |
a5fcb39b | 140 | * Stuff the character in the buffer, and decode |
4f9a21f0 SL |
141 | * if all the chars are there. |
142 | * | |
143 | * This routine could be expanded in-line in the receiver | |
a5fcb39b | 144 | * interrupt routine to make it run as fast as possible. |
4f9a21f0 | 145 | */ |
4f9a21f0 | 146 | tbinput(c, tp) |
840510a3 BJ |
147 | register int c; |
148 | register struct tty *tp; | |
4f9a21f0 | 149 | { |
a5fcb39b SL |
150 | register struct tb *tbp = (struct tb *)tp->T_LINEP; |
151 | register struct tbconf *tc = &tbconf[tbp->tbflags & TBTYPE]; | |
152 | ||
153 | if (tc->tbc_recsize == 0 || tc->tbc_decode == 0) /* paranoid? */ | |
154 | return; | |
155 | /* | |
156 | * Locate sync bit/byte or reset input buffer. | |
157 | */ | |
158 | if (c&tc->tbc_sync || tp->t_inbuf == tc->tbc_recsize) { | |
159 | tp->t_cp = tbp->cbuf; | |
160 | tp->t_inbuf = 0; | |
4f9a21f0 | 161 | } |
a5fcb39b SL |
162 | *tp->t_cp++ = c&0177; |
163 | /* | |
164 | * Call decode routine only if a full record has been collected. | |
165 | */ | |
166 | if (++tp->t_inbuf == tc->tbc_recsize) | |
729ea429 | 167 | (*tc->tbc_decode)(tc, tbp->cbuf, &tbp->rets); |
4f9a21f0 SL |
168 | } |
169 | ||
170 | /* | |
a5fcb39b | 171 | * Decode GTCO 8 byte format (high res, tilt, and pressure). |
4f9a21f0 | 172 | */ |
a5fcb39b | 173 | static |
729ea429 SL |
174 | gtcodecode(tc, cp, tbpos) |
175 | struct tbconf *tc; | |
4f9a21f0 | 176 | register char *cp; |
a5fcb39b | 177 | register struct gtcopos *tbpos; |
4f9a21f0 SL |
178 | { |
179 | ||
a5fcb39b SL |
180 | tbpos->pressure = *cp >> 2; |
181 | tbpos->status = (tbpos->pressure > 16) | TBINPROX; /* half way down */ | |
182 | tbpos->xpos = (*cp++ & 03) << 14; | |
183 | tbpos->xpos |= *cp++ << 7; | |
184 | tbpos->xpos |= *cp++; | |
185 | tbpos->ypos = (*cp++ & 03) << 14; | |
186 | tbpos->ypos |= *cp++ << 7; | |
187 | tbpos->ypos |= *cp++; | |
188 | tbpos->xtilt = *cp++; | |
189 | tbpos->ytilt = *cp++; | |
13b9086b | 190 | tbpos->scount++; |
4f9a21f0 SL |
191 | } |
192 | ||
193 | /* | |
a5fcb39b | 194 | * Decode old Hitachi 5 byte format (low res). |
4f9a21f0 | 195 | */ |
a5fcb39b | 196 | static |
729ea429 SL |
197 | tbdecode(tc, cp, tbpos) |
198 | struct tbconf *tc; | |
4f9a21f0 | 199 | register char *cp; |
13b9086b | 200 | register struct tbpos *tbpos; |
4f9a21f0 | 201 | { |
4f9a21f0 SL |
202 | register char byte; |
203 | ||
204 | byte = *cp++; | |
a5fcb39b | 205 | tbpos->status = (byte&0100) ? TBINPROX : 0; |
4f9a21f0 | 206 | byte &= ~0100; |
840510a3 | 207 | if (byte > 036) |
a5fcb39b SL |
208 | tbpos->status |= 1 << ((byte-040)/2); |
209 | tbpos->xpos = *cp++ << 7; | |
210 | tbpos->xpos |= *cp++; | |
211 | if (tbpos->xpos < 256) /* tablet wraps around at 256 */ | |
212 | tbpos->status &= ~TBINPROX; /* make it out of proximity */ | |
213 | tbpos->ypos = *cp++ << 7; | |
214 | tbpos->ypos |= *cp++; | |
215 | tbpos->scount++; | |
216 | } | |
217 | ||
218 | /* | |
219 | * Decode new Hitach 5-byte format (low res). | |
220 | */ | |
221 | static | |
729ea429 SL |
222 | tblresdecode(tc, cp, tbpos) |
223 | struct tbconf *tc; | |
a5fcb39b SL |
224 | register char *cp; |
225 | register struct tbpos *tbpos; | |
226 | { | |
227 | ||
228 | *cp &= ~0100; /* mask sync bit */ | |
229 | tbpos->status = (*cp++ >> 2) | TBINPROX; | |
729ea429 SL |
230 | if (tc->tbc_flags&TBF_INPROX && tbpos->status&020) |
231 | tbpos->status &= ~(020|TBINPROX); | |
a5fcb39b SL |
232 | tbpos->xpos = *cp++; |
233 | tbpos->xpos |= *cp++ << 6; | |
234 | tbpos->ypos = *cp++; | |
235 | tbpos->ypos |= *cp++ << 6; | |
236 | tbpos->scount++; | |
237 | } | |
238 | ||
239 | /* | |
240 | * Decode new Hitach 6-byte format (high res). | |
241 | */ | |
242 | static | |
729ea429 SL |
243 | tbhresdecode(tc, cp, tbpos) |
244 | struct tbconf *tc; | |
a5fcb39b SL |
245 | register char *cp; |
246 | register struct tbpos *tbpos; | |
247 | { | |
248 | char byte; | |
249 | ||
250 | byte = *cp++; | |
251 | tbpos->xpos = (byte & 03) << 14; | |
252 | tbpos->xpos |= *cp++ << 7; | |
253 | tbpos->xpos |= *cp++; | |
254 | tbpos->ypos = *cp++ << 14; | |
255 | tbpos->ypos |= *cp++ << 7; | |
256 | tbpos->ypos |= *cp++; | |
257 | tbpos->status = (byte >> 2) | TBINPROX; | |
729ea429 SL |
258 | if (tc->tbc_flags&TBF_INPROX && tbpos->status&020) |
259 | tbpos->status &= ~(020|TBINPROX); | |
13b9086b | 260 | tbpos->scount++; |
4f9a21f0 SL |
261 | } |
262 | ||
263 | /* | |
a5fcb39b | 264 | * Polhemus decode. |
4f9a21f0 | 265 | */ |
a5fcb39b | 266 | static |
729ea429 SL |
267 | poldecode(tc, cp, polpos) |
268 | struct tbconf *tc; | |
a5fcb39b SL |
269 | register char *cp; |
270 | register struct polpos *polpos; | |
271 | { | |
272 | ||
273 | polpos->p_x = cp[4] | cp[3]<<7 | (cp[9] & 0x03) << 14; | |
274 | polpos->p_y = cp[6] | cp[5]<<7 | (cp[9] & 0x0c) << 12; | |
275 | polpos->p_z = cp[8] | cp[7]<<7 | (cp[9] & 0x30) << 10; | |
276 | polpos->p_azi = cp[11] | cp[10]<<7 | (cp[16] & 0x03) << 14; | |
277 | polpos->p_pit = cp[13] | cp[12]<<7 | (cp[16] & 0x0c) << 12; | |
278 | polpos->p_rol = cp[15] | cp[14]<<7 | (cp[16] & 0x30) << 10; | |
279 | polpos->p_stat = cp[1] | cp[0]<<7; | |
280 | if (cp[2] != ' ') | |
281 | polpos->p_key = cp[2]; | |
282 | } | |
283 | ||
4f9a21f0 | 284 | /*ARGSUSED*/ |
942f05a9 SL |
285 | tbioctl(tp, cmd, data, flag) |
286 | struct tty *tp; | |
287 | caddr_t data; | |
4f9a21f0 | 288 | { |
a5fcb39b | 289 | register struct tb *tbp = (struct tb *)tp->T_LINEP; |
4f9a21f0 | 290 | |
4f9a21f0 SL |
291 | switch (cmd) { |
292 | ||
a5fcb39b SL |
293 | case BIOGMODE: |
294 | *(int *)data = tbp->tbflags & TBMODE; | |
295 | break; | |
296 | ||
297 | case BIOSTYPE: | |
298 | if (tbconf[*(int *)data & TBTYPE].tbc_recsize == 0 || | |
299 | tbconf[*(int *)data & TBTYPE].tbc_decode == 0) | |
300 | return (EINVAL); | |
301 | tbp->tbflags &= ~TBTYPE; | |
302 | tbp->tbflags |= *(int *)data & TBTYPE; | |
303 | /* fall thru... to set mode bits */ | |
304 | ||
305 | case BIOSMODE: { | |
306 | register struct tbconf *tc; | |
307 | ||
308 | tbp->tbflags &= ~TBMODE; | |
309 | tbp->tbflags |= *(int *)data & TBMODE; | |
310 | tc = &tbconf[tbp->tbflags & TBTYPE]; | |
311 | if (tbp->tbflags&TBSTOP) { | |
312 | if (tc->tbc_stop) | |
313 | ttyout(tc->tbc_stop, tp); | |
314 | } else if (tc->tbc_start) | |
315 | ttyout(tc->tbc_start, tp); | |
316 | if (tbp->tbflags&TBPOINT) { | |
317 | if (tc->tbc_point) | |
318 | ttyout(tc->tbc_point, tp); | |
319 | } else if (tc->tbc_run) | |
320 | ttyout(tc->tbc_run, tp); | |
321 | ttstart(tp); | |
322 | break; | |
323 | } | |
324 | ||
325 | case BIOGTYPE: | |
326 | *(int *)data = tbp->tbflags & TBTYPE; | |
327 | break; | |
328 | ||
4f9a21f0 SL |
329 | case TIOCSETD: |
330 | case TIOCGETD: | |
331 | case TIOCGETP: | |
332 | case TIOCGETC: | |
a5fcb39b SL |
333 | return (-1); /* pass thru... */ |
334 | ||
335 | default: | |
336 | return (ENOTTY); | |
4f9a21f0 | 337 | } |
4f9a21f0 SL |
338 | return (0); |
339 | } | |
340 | #endif |