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1c79356b | 1 | /* |
5d5c5d0d A |
2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
3 | * | |
2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
1c79356b | 5 | * |
2d21ac55 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License | |
8 | * Version 2.0 (the 'License'). You may not use this file except in | |
9 | * compliance with the License. The rights granted to you under the License | |
10 | * may not be used to create, or enable the creation or redistribution of, | |
11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
12 | * circumvent, violate, or enable the circumvention or violation of, any | |
13 | * terms of an Apple operating system software license agreement. | |
8f6c56a5 | 14 | * |
2d21ac55 A |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
17 | * | |
18 | * The Original Code and all software distributed under the License are | |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
2d21ac55 A |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and | |
24 | * limitations under the License. | |
8f6c56a5 | 25 | * |
2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
1c79356b A |
27 | */ |
28 | /* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. | |
29 | * | |
30 | * km.m - kernel keyboard/monitor module, procedural interface. | |
31 | * | |
32 | * HISTORY | |
33 | */ | |
34 | ||
35 | #include <sys/param.h> | |
36 | #include <sys/tty.h> | |
37 | ||
38 | #include <dev/i386/cons.h> | |
39 | #include <sys/conf.h> | |
40 | #include <sys/systm.h> | |
41 | #include <sys/uio.h> | |
42 | #include <sys/fcntl.h> /* for kmopen */ | |
43 | #include <sys/errno.h> | |
44 | #include <sys/proc.h> /* for kmopen */ | |
45 | #include <sys/msgbuf.h> | |
46 | #include <sys/time.h> | |
47 | #include <dev/kmreg_com.h> | |
48 | #include <pexpert/pexpert.h> | |
0c530ab8 | 49 | #include <pexpert/i386/boot.h> |
1c79356b | 50 | |
91447636 A |
51 | extern int hz; |
52 | ||
53 | extern void cnputcusr(char); | |
54 | extern int cngetc(void); | |
55 | ||
56 | void kminit(void); | |
57 | int kmopen(dev_t dev, int flag, int devtype, struct proc *pp); | |
58 | int kmclose(dev_t dev, int flag, int mode, struct proc *p); | |
59 | int kmread(dev_t dev, struct uio *uio, int ioflag); | |
60 | int kmwrite(dev_t dev, struct uio *uio, int ioflag); | |
61 | int kmioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p); | |
62 | int kmputc(int c); | |
63 | int kmgetc(dev_t dev); | |
64 | int kmgetc_silent(dev_t dev); | |
65 | void cons_cinput(char ch); | |
66 | ||
1c79356b A |
67 | /* |
68 | * 'Global' variables, shared only by this file and conf.c. | |
69 | */ | |
1c79356b A |
70 | struct tty *km_tty[1] = { &cons }; |
71 | ||
72 | /* | |
73 | * this works early on, after initialize_screen() but before autoconf (and thus | |
74 | * before we have a kmDevice). | |
75 | */ | |
76 | int disableConsoleOutput; | |
77 | ||
78 | /* | |
79 | * 'Global' variables, shared only by this file and kmDevice.m. | |
80 | */ | |
81 | int initialized = 0; | |
82 | ||
83 | static int kmoutput(struct tty *tp); | |
1c79356b A |
84 | static void kmstart(struct tty *tp); |
85 | ||
86 | extern void KeyboardOpen(void); | |
87 | ||
91447636 A |
88 | void |
89 | kminit(void) | |
1c79356b | 90 | { |
91447636 | 91 | cons.t_dev = makedev(12, 0); |
1c79356b A |
92 | initialized = 1; |
93 | } | |
94 | /* | |
95 | * cdevsw interface to km driver. | |
96 | */ | |
97 | int | |
98 | kmopen( | |
99 | dev_t dev, | |
100 | int flag, | |
91447636 | 101 | __unused int devtype, |
1c79356b A |
102 | struct proc *pp) |
103 | { | |
1c79356b A |
104 | int unit; |
105 | struct tty *tp; | |
106 | struct winsize *wp; | |
107 | int ret; | |
108 | ||
109 | unit = minor(dev); | |
110 | if(unit >= 1) | |
111 | return (ENXIO); | |
112 | ||
113 | tp = (struct tty *)&cons; | |
114 | tp->t_oproc = kmstart; | |
115 | tp->t_param = NULL; | |
116 | tp->t_dev = dev; | |
117 | ||
118 | if ( !(tp->t_state & TS_ISOPEN) ) { | |
119 | tp->t_iflag = TTYDEF_IFLAG; | |
120 | tp->t_oflag = TTYDEF_OFLAG; | |
121 | tp->t_cflag = (CREAD | CS8 | CLOCAL); | |
122 | tp->t_lflag = TTYDEF_LFLAG; | |
123 | tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; | |
124 | termioschars(&tp->t_termios); | |
125 | ttsetwater(tp); | |
91447636 | 126 | } else if ((tp->t_state & TS_XCLUDE) && proc_suser(pp)) |
1c79356b A |
127 | return EBUSY; |
128 | ||
129 | tp->t_state |= TS_CARR_ON; /* lie and say carrier exists and is on. */ | |
130 | ret = ((*linesw[tp->t_line].l_open)(dev, tp)); | |
131 | { | |
132 | PE_Video video; | |
133 | wp = &tp->t_winsize; | |
134 | /* Magic numbers. These are CHARWIDTH and CHARHEIGHT | |
135 | * from pexpert/i386/video_console.c | |
136 | */ | |
137 | wp->ws_xpixel = 8; | |
138 | wp->ws_ypixel = 16; | |
139 | ||
140 | if (flag & O_POPUP) | |
141 | PE_initialize_console(0, kPETextScreen); | |
142 | ||
143 | bzero(&video, sizeof(video)); | |
144 | PE_current_console(&video); | |
0c530ab8 A |
145 | if( video.v_display == VGA_TEXT_MODE ) { |
146 | wp->ws_col = video.v_width; | |
147 | wp->ws_row = video.v_height; | |
148 | } else if( video.v_width != 0 && video.v_height != 0 ) { | |
1c79356b A |
149 | wp->ws_col = video.v_width / wp->ws_xpixel; |
150 | wp->ws_row = video.v_height / wp->ws_ypixel; | |
151 | } else { | |
152 | wp->ws_col = 100; | |
153 | wp->ws_row = 36; | |
154 | } | |
155 | } | |
156 | return ret; | |
157 | } | |
158 | ||
159 | int | |
160 | kmclose( | |
91447636 | 161 | __unused dev_t dev, |
1c79356b | 162 | int flag, |
91447636 A |
163 | __unused int mode, |
164 | __unused struct proc *p) | |
1c79356b A |
165 | { |
166 | ||
167 | struct tty *tp; | |
168 | ||
169 | tp = &cons; | |
170 | (*linesw[tp->t_line].l_close)(tp,flag); | |
171 | ttyclose(tp); | |
172 | return (0); | |
173 | } | |
174 | ||
175 | int | |
176 | kmread( | |
91447636 | 177 | __unused dev_t dev, |
1c79356b A |
178 | struct uio *uio, |
179 | int ioflag) | |
180 | { | |
181 | register struct tty *tp; | |
182 | ||
183 | tp = &cons; | |
184 | return ((*linesw[tp->t_line].l_read)(tp, uio, ioflag)); | |
185 | } | |
186 | ||
187 | int | |
188 | kmwrite( | |
91447636 | 189 | __unused dev_t dev, |
1c79356b A |
190 | struct uio *uio, |
191 | int ioflag) | |
192 | { | |
193 | register struct tty *tp; | |
194 | ||
195 | tp = &cons; | |
196 | return ((*linesw[tp->t_line].l_write)(tp, uio, ioflag)); | |
197 | } | |
198 | ||
199 | int | |
200 | kmioctl( | |
91447636 | 201 | __unused dev_t dev, |
1c79356b A |
202 | int cmd, |
203 | caddr_t data, | |
204 | int flag, | |
205 | struct proc *p) | |
206 | { | |
207 | int error; | |
208 | struct tty *tp = &cons; | |
209 | struct winsize *wp; | |
210 | ||
211 | switch (cmd) { | |
212 | ||
213 | ||
214 | ||
215 | case KMIOCSIZE: | |
216 | wp = (struct winsize *)data; | |
217 | *wp = tp->t_winsize; | |
218 | return 0; | |
219 | ||
220 | case TIOCSWINSZ: | |
221 | /* Prevent changing of console size -- | |
222 | * this ensures that login doesn't revert to the | |
223 | * termcap-defined size | |
224 | */ | |
225 | return EINVAL; | |
226 | ||
227 | /* Bodge in the CLOCAL flag as the km device is always local */ | |
228 | case TIOCSETA: | |
229 | case TIOCSETAW: | |
230 | case TIOCSETAF: { | |
231 | register struct termios *t = (struct termios *)data; | |
232 | t->c_cflag |= CLOCAL; | |
233 | /* No Break */ | |
234 | } | |
235 | default: | |
236 | error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); | |
91447636 | 237 | if (ENOTTY != error) |
1c79356b | 238 | return error; |
91447636 | 239 | return ttioctl (tp, cmd, data, flag, p); |
1c79356b A |
240 | } |
241 | } | |
242 | ||
243 | int | |
244 | kmputc( | |
245 | int c) | |
246 | { | |
247 | ||
248 | if( disableConsoleOutput) | |
249 | return( 0); | |
250 | ||
251 | if(!initialized) | |
252 | return( 0); | |
253 | ||
254 | if(c == '\n') | |
91447636 | 255 | cnputcusr('\r'); |
1c79356b | 256 | |
91447636 | 257 | cnputcusr(c); |
1c79356b A |
258 | |
259 | return 0; | |
260 | } | |
261 | ||
262 | int | |
263 | kmgetc( | |
91447636 | 264 | __unused dev_t dev) |
1c79356b A |
265 | { |
266 | int c; | |
267 | ||
268 | c= cngetc(); | |
269 | ||
270 | if (c == '\r') { | |
271 | c = '\n'; | |
272 | } | |
91447636 | 273 | cnputcusr(c); |
1c79356b A |
274 | return c; |
275 | } | |
276 | ||
277 | int | |
278 | kmgetc_silent( | |
91447636 | 279 | __unused dev_t dev) |
1c79356b A |
280 | { |
281 | int c; | |
282 | ||
283 | c= cngetc(); | |
284 | if (c == '\r') { | |
285 | c = '\n'; | |
286 | } | |
287 | return c; | |
288 | } | |
289 | ||
290 | /* | |
291 | * Callouts from linesw. | |
292 | */ | |
293 | ||
294 | #define KM_LOWAT_DELAY ((ns_time_t)1000) | |
295 | ||
296 | static void | |
297 | kmstart( | |
298 | struct tty *tp) | |
299 | { | |
1c79356b A |
300 | if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) |
301 | goto out; | |
302 | if (tp->t_outq.c_cc == 0) | |
303 | goto out; | |
304 | tp->t_state |= TS_BUSY; | |
91447636 A |
305 | kmoutput(tp); |
306 | return; | |
307 | ||
1c79356b | 308 | out: |
91447636 A |
309 | (*linesw[tp->t_line].l_start)(tp); |
310 | return; | |
1c79356b A |
311 | } |
312 | ||
313 | static void | |
55e303ae | 314 | kmtimeout(void *arg) |
1c79356b A |
315 | { |
316 | boolean_t funnel_state; | |
55e303ae | 317 | struct tty *tp = (struct tty *) arg; |
1c79356b A |
318 | |
319 | funnel_state = thread_funnel_set(kernel_flock, TRUE); | |
320 | kmoutput(tp); | |
9bccf70c | 321 | (void) thread_funnel_set(kernel_flock, funnel_state); |
1c79356b A |
322 | |
323 | ||
324 | } | |
325 | static int | |
326 | kmoutput( | |
327 | struct tty *tp) | |
328 | { | |
329 | /* | |
330 | * FIXME - to be grokked...copied from m68k km.c. | |
331 | */ | |
332 | char buf[80]; | |
333 | char *cp; | |
334 | int cc = -1; | |
1c79356b A |
335 | |
336 | ||
337 | while (tp->t_outq.c_cc > 0) { | |
338 | cc = ndqb(&tp->t_outq, 0); | |
339 | if (cc == 0) | |
340 | break; | |
341 | cc = min(cc, sizeof buf); | |
342 | (void) q_to_b(&tp->t_outq, buf, cc); | |
343 | for (cp = buf; cp < &buf[cc]; cp++) { | |
344 | kmputc(*cp & 0x7f); | |
345 | } | |
346 | } | |
347 | if (tp->t_outq.c_cc > 0) { | |
348 | timeout(kmtimeout, tp, hz); | |
349 | } | |
350 | tp->t_state &= ~TS_BUSY; | |
91447636 | 351 | (*linesw[tp->t_line].l_start)(tp); |
1c79356b A |
352 | |
353 | return 0; | |
354 | } | |
91447636 A |
355 | |
356 | void | |
1c79356b A |
357 | cons_cinput(char ch) |
358 | { | |
359 | struct tty *tp = &cons; | |
1c79356b A |
360 | |
361 | (*linesw[tp->t_line].l_rint) (ch, tp); | |
1c79356b A |
362 | } |
363 |