1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 /* Handle the event stream, converting console events into SDL events */
25
26 #include <sys/types.h>
27 #include <sys/time.h>
28 #include <sys/ioctl.h>
29 #include <unistd.h>
30 #include <fcntl.h>
31 #include <errno.h>
32 #include <limits.h>
33
34 /* For parsing /proc */
35 #include <dirent.h>
36 #include <ctype.h>
37
38 #include <linux/vt.h>
39 #include <linux/kd.h>
40 #include <linux/keyboard.h>
41
42 #include "SDL_mutex.h"
43 #include "../SDL_sysvideo.h"
44 #include "../../events/SDL_sysevents.h"
45 #include "../../events/SDL_events_c.h"
46 #include "SDL_gsvideo.h"
47 #include "SDL_gsevents_c.h"
48 #include "SDL_gskeys.h"
49
50 #ifndef GPM_NODE_FIFO
51 #define GPM_NODE_FIFO "/dev/gpmdata"
52 #endif
53
54 /* The translation tables from a console scancode to a SDL keysym */
55 #define NUM_VGAKEYMAPS (1<<KG_CAPSSHIFT)
56 static Uint16 vga_keymap[NUM_VGAKEYMAPS][NR_KEYS];
57 static SDLKey keymap[128];
58 static Uint16 keymap_temp[128]; /* only used at startup */
59 static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym);
60
61 /* Ugh, we have to duplicate the kernel's keysym mapping code...
62 Oh, it's not so bad. :-)
63
64 FIXME: Add keyboard LED handling code
65 */
GS_vgainitkeymaps(int fd)66 static void GS_vgainitkeymaps(int fd)
67 {
68 struct kbentry entry;
69 int map, i;
70
71 /* Don't do anything if we are passed a closed keyboard */
72 if ( fd < 0 ) {
73 return;
74 }
75
76 /* Load all the keysym mappings */
77 for ( map=0; map<NUM_VGAKEYMAPS; ++map ) {
78 SDL_memset(vga_keymap[map], 0, NR_KEYS*sizeof(Uint16));
79 for ( i=0; i<NR_KEYS; ++i ) {
80 entry.kb_table = map;
81 entry.kb_index = i;
82 if ( ioctl(fd, KDGKBENT, &entry) == 0 ) {
83 /* fill keytemp. This replaces SDL_fbkeys.h */
84 if ( (map == 0) && (i<128) ) {
85 keymap_temp[i] = entry.kb_value;
86 }
87 /* The "Enter" key is a special case */
88 if ( entry.kb_value == K_ENTER ) {
89 entry.kb_value = K(KT_ASCII,13);
90 }
91 /* Handle numpad specially as well */
92 if ( KTYP(entry.kb_value) == KT_PAD ) {
93 switch ( entry.kb_value ) {
94 case K_P0:
95 case K_P1:
96 case K_P2:
97 case K_P3:
98 case K_P4:
99 case K_P5:
100 case K_P6:
101 case K_P7:
102 case K_P8:
103 case K_P9:
104 vga_keymap[map][i]=entry.kb_value;
105 vga_keymap[map][i]+= '0';
106 break;
107 case K_PPLUS:
108 vga_keymap[map][i]=K(KT_ASCII,'+');
109 break;
110 case K_PMINUS:
111 vga_keymap[map][i]=K(KT_ASCII,'-');
112 break;
113 case K_PSTAR:
114 vga_keymap[map][i]=K(KT_ASCII,'*');
115 break;
116 case K_PSLASH:
117 vga_keymap[map][i]=K(KT_ASCII,'/');
118 break;
119 case K_PENTER:
120 vga_keymap[map][i]=K(KT_ASCII,'\r');
121 break;
122 case K_PCOMMA:
123 vga_keymap[map][i]=K(KT_ASCII,',');
124 break;
125 case K_PDOT:
126 vga_keymap[map][i]=K(KT_ASCII,'.');
127 break;
128 default:
129 break;
130 }
131 }
132 /* Do the normal key translation */
133 if ( (KTYP(entry.kb_value) == KT_LATIN) ||
134 (KTYP(entry.kb_value) == KT_ASCII) ||
135 (KTYP(entry.kb_value) == KT_LETTER) ) {
136 vga_keymap[map][i] = entry.kb_value;
137 }
138 }
139 }
140 }
141 }
142
GS_InGraphicsMode(_THIS)143 int GS_InGraphicsMode(_THIS)
144 {
145 return((keyboard_fd >= 0) && (saved_kbd_mode >= 0));
146 }
147
GS_EnterGraphicsMode(_THIS)148 int GS_EnterGraphicsMode(_THIS)
149 {
150 struct termios keyboard_termios;
151
152 /* Set medium-raw keyboard mode */
153 if ( (keyboard_fd >= 0) && !GS_InGraphicsMode(this) ) {
154
155 /* Switch to the correct virtual terminal */
156 if ( current_vt > 0 ) {
157 struct vt_stat vtstate;
158
159 if ( ioctl(keyboard_fd, VT_GETSTATE, &vtstate) == 0 ) {
160 saved_vt = vtstate.v_active;
161 }
162 if ( ioctl(keyboard_fd, VT_ACTIVATE, current_vt) == 0 ) {
163 ioctl(keyboard_fd, VT_WAITACTIVE, current_vt);
164 }
165 }
166
167 /* Set the terminal input mode */
168 if ( tcgetattr(keyboard_fd, &saved_kbd_termios) < 0 ) {
169 SDL_SetError("Unable to get terminal attributes");
170 if ( keyboard_fd > 0 ) {
171 close(keyboard_fd);
172 }
173 keyboard_fd = -1;
174 return(-1);
175 }
176 if ( ioctl(keyboard_fd, KDGKBMODE, &saved_kbd_mode) < 0 ) {
177 SDL_SetError("Unable to get current keyboard mode");
178 if ( keyboard_fd > 0 ) {
179 close(keyboard_fd);
180 }
181 keyboard_fd = -1;
182 return(-1);
183 }
184 keyboard_termios = saved_kbd_termios;
185 keyboard_termios.c_lflag &= ~(ICANON | ECHO | ISIG);
186 keyboard_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
187 keyboard_termios.c_cc[VMIN] = 0;
188 keyboard_termios.c_cc[VTIME] = 0;
189 if (tcsetattr(keyboard_fd, TCSAFLUSH, &keyboard_termios) < 0) {
190 GS_CloseKeyboard(this);
191 SDL_SetError("Unable to set terminal attributes");
192 return(-1);
193 }
194 /* This will fail if we aren't root or this isn't our tty */
195 if ( ioctl(keyboard_fd, KDSKBMODE, K_MEDIUMRAW) < 0 ) {
196 GS_CloseKeyboard(this);
197 SDL_SetError("Unable to set keyboard in raw mode");
198 return(-1);
199 }
200 if ( ioctl(keyboard_fd, KDSETMODE, KD_GRAPHICS) < 0 ) {
201 GS_CloseKeyboard(this);
202 SDL_SetError("Unable to set keyboard in graphics mode");
203 return(-1);
204 }
205 }
206 return(keyboard_fd);
207 }
208
GS_LeaveGraphicsMode(_THIS)209 void GS_LeaveGraphicsMode(_THIS)
210 {
211 if ( GS_InGraphicsMode(this) ) {
212 ioctl(keyboard_fd, KDSETMODE, KD_TEXT);
213 ioctl(keyboard_fd, KDSKBMODE, saved_kbd_mode);
214 tcsetattr(keyboard_fd, TCSAFLUSH, &saved_kbd_termios);
215 saved_kbd_mode = -1;
216
217 /* Head back over to the original virtual terminal */
218 if ( saved_vt > 0 ) {
219 ioctl(keyboard_fd, VT_ACTIVATE, saved_vt);
220 }
221 }
222 }
223
GS_CloseKeyboard(_THIS)224 void GS_CloseKeyboard(_THIS)
225 {
226 if ( keyboard_fd >= 0 ) {
227 GS_LeaveGraphicsMode(this);
228 if ( keyboard_fd > 0 ) {
229 close(keyboard_fd);
230 }
231 }
232 keyboard_fd = -1;
233 }
234
GS_OpenKeyboard(_THIS)235 int GS_OpenKeyboard(_THIS)
236 {
237 /* Open only if not already opened */
238 if ( keyboard_fd < 0 ) {
239 char *tty0[] = { "/dev/tty0", "/dev/vc/0", NULL };
240 char *vcs[] = { "/dev/vc/%d", "/dev/tty%d", NULL };
241 int i, tty0_fd;
242
243 /* Try to query for a free virtual terminal */
244 tty0_fd = -1;
245 for ( i=0; tty0[i] && (tty0_fd < 0); ++i ) {
246 tty0_fd = open(tty0[i], O_WRONLY, 0);
247 }
248 if ( tty0_fd < 0 ) {
249 tty0_fd = dup(0); /* Maybe stdin is a VT? */
250 }
251 ioctl(tty0_fd, VT_OPENQRY, ¤t_vt);
252 close(tty0_fd);
253 if ( (geteuid() == 0) && (current_vt > 0) ) {
254 for ( i=0; vcs[i] && (keyboard_fd < 0); ++i ) {
255 char vtpath[12];
256
257 SDL_snprintf(vtpath, SDL_arraysize(vtpath), vcs[i], current_vt);
258 keyboard_fd = open(vtpath, O_RDWR, 0);
259 #ifdef DEBUG_KEYBOARD
260 fprintf(stderr, "vtpath = %s, fd = %d\n",
261 vtpath, keyboard_fd);
262 #endif /* DEBUG_KEYBOARD */
263
264 /* This needs to be our controlling tty
265 so that the kernel ioctl() calls work
266 */
267 if ( keyboard_fd >= 0 ) {
268 tty0_fd = open("/dev/tty", O_RDWR, 0);
269 if ( tty0_fd >= 0 ) {
270 ioctl(tty0_fd, TIOCNOTTY, 0);
271 close(tty0_fd);
272 }
273 }
274 }
275 }
276 if ( keyboard_fd < 0 ) {
277 /* Last resort, maybe our tty is a usable VT */
278 current_vt = 0;
279 keyboard_fd = open("/dev/tty", O_RDWR);
280 }
281 #ifdef DEBUG_KEYBOARD
282 fprintf(stderr, "Current VT: %d\n", current_vt);
283 #endif
284 saved_kbd_mode = -1;
285
286 /* Make sure that our input is a console terminal */
287 { int dummy;
288 if ( ioctl(keyboard_fd, KDGKBMODE, &dummy) < 0 ) {
289 close(keyboard_fd);
290 keyboard_fd = -1;
291 SDL_SetError("Unable to open a console terminal");
292 }
293 }
294
295 /* Set up keymap */
296 GS_vgainitkeymaps(keyboard_fd);
297 }
298 return(keyboard_fd);
299 }
300
301 static enum {
302 MOUSE_NONE = -1,
303 MOUSE_GPM, /* Note: GPM uses the MSC protocol */
304 MOUSE_PS2,
305 MOUSE_IMPS2,
306 MOUSE_MS,
307 MOUSE_BM,
308 NUM_MOUSE_DRVS
309 } mouse_drv = MOUSE_NONE;
310
GS_CloseMouse(_THIS)311 void GS_CloseMouse(_THIS)
312 {
313 if ( mouse_fd > 0 ) {
314 close(mouse_fd);
315 }
316 mouse_fd = -1;
317 }
318
319 /* Returns processes listed in /proc with the desired name */
find_pid(DIR * proc,const char * wanted_name)320 static int find_pid(DIR *proc, const char *wanted_name)
321 {
322 struct dirent *entry;
323 int pid;
324
325 /* First scan proc for the gpm process */
326 pid = 0;
327 while ( (pid == 0) && ((entry=readdir(proc)) != NULL) ) {
328 if ( isdigit(entry->d_name[0]) ) {
329 FILE *status;
330 char path[PATH_MAX];
331 char name[PATH_MAX];
332
333 SDL_snprintf(path, SDL_arraysize(path), "/proc/%s/status", entry->d_name);
334 status=fopen(path, "r");
335 if ( status ) {
336 name[0] = '\0';
337 fscanf(status, "Name: %s", name);
338 if ( SDL_strcmp(name, wanted_name) == 0 ) {
339 pid = atoi(entry->d_name);
340 }
341 fclose(status);
342 }
343 }
344 }
345 return pid;
346 }
347
348 /* Returns true if /dev/gpmdata is being written to by gpm */
gpm_available(void)349 static int gpm_available(void)
350 {
351 int available;
352 DIR *proc;
353 int pid;
354 int cmdline, len, arglen;
355 char path[PATH_MAX];
356 char args[PATH_MAX], *arg;
357
358 /* Don't bother looking if the fifo isn't there */
359 if ( access(GPM_NODE_FIFO, F_OK) < 0 ) {
360 return(0);
361 }
362
363 available = 0;
364 proc = opendir("/proc");
365 if ( proc ) {
366 while ( (pid=find_pid(proc, "gpm")) > 0 ) {
367 SDL_snprintf(path, SDL_arraysize(path), "/proc/%d/cmdline", pid);
368 cmdline = open(path, O_RDONLY, 0);
369 if ( cmdline >= 0 ) {
370 len = read(cmdline, args, sizeof(args));
371 arg = args;
372 while ( len > 0 ) {
373 if ( SDL_strcmp(arg, "-R") == 0 ) {
374 available = 1;
375 }
376 arglen = SDL_strlen(arg)+1;
377 len -= arglen;
378 arg += arglen;
379 }
380 close(cmdline);
381 }
382 }
383 closedir(proc);
384 }
385 return available;
386 }
387
388
389 /* rcg06112001 Set up IMPS/2 mode, if possible. This gives
390 * us access to the mousewheel, etc. Returns zero if
391 * writes to device failed, but you still need to query the
392 * device to see which mode it's actually in.
393 */
set_imps2_mode(int fd)394 static int set_imps2_mode(int fd)
395 {
396 /* If you wanted to control the mouse mode (and we do :) ) ...
397 Set IMPS/2 protocol:
398 {0xf3,200,0xf3,100,0xf3,80}
399 Reset mouse device:
400 {0xFF}
401 */
402 Uint8 set_imps2[] = {0xf3, 200, 0xf3, 100, 0xf3, 80};
403 Uint8 reset = 0xff;
404 fd_set fdset;
405 struct timeval tv;
406 int retval = 0;
407
408 if ( write(fd, &set_imps2, sizeof(set_imps2)) == sizeof(set_imps2) ) {
409 if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) {
410 retval = 1;
411 }
412 }
413
414 /* Get rid of any chatter from the above */
415 FD_ZERO(&fdset);
416 FD_SET(fd, &fdset);
417 tv.tv_sec = 0;
418 tv.tv_usec = 0;
419 while ( select(fd+1, &fdset, 0, 0, &tv) > 0 ) {
420 char temp[32];
421 read(fd, temp, sizeof(temp));
422 }
423
424 return retval;
425 }
426
427
428 /* Returns true if the mouse uses the IMPS/2 protocol */
detect_imps2(int fd)429 static int detect_imps2(int fd)
430 {
431 int imps2;
432
433 imps2 = 0;
434
435 if ( SDL_getenv("SDL_MOUSEDEV_IMPS2") ) {
436 imps2 = 1;
437 }
438 if ( ! imps2 ) {
439 Uint8 query_ps2 = 0xF2;
440 fd_set fdset;
441 struct timeval tv;
442
443 /* Get rid of any mouse motion noise */
444 FD_ZERO(&fdset);
445 FD_SET(fd, &fdset);
446 tv.tv_sec = 0;
447 tv.tv_usec = 0;
448 while ( select(fd+1, &fdset, 0, 0, &tv) > 0 ) {
449 char temp[32];
450 read(fd, temp, sizeof(temp));
451 }
452
453 /* Query for the type of mouse protocol */
454 if ( write(fd, &query_ps2, sizeof (query_ps2)) == sizeof (query_ps2)) {
455 Uint8 ch = 0;
456
457 /* Get the mouse protocol response */
458 do {
459 FD_ZERO(&fdset);
460 FD_SET(fd, &fdset);
461 tv.tv_sec = 1;
462 tv.tv_usec = 0;
463 if ( select(fd+1, &fdset, 0, 0, &tv) < 1 ) {
464 break;
465 }
466 } while ( (read(fd, &ch, sizeof (ch)) == sizeof (ch)) &&
467 ((ch == 0xFA) || (ch == 0xAA)) );
468
469 /* Experimental values (Logitech wheelmouse) */
470 #ifdef DEBUG_MOUSE
471 fprintf(stderr, "Last mouse mode: 0x%x\n", ch);
472 #endif
473 if ( ch == 3 ) {
474 imps2 = 1;
475 }
476 }
477 }
478 return imps2;
479 }
480
GS_OpenMouse(_THIS)481 int GS_OpenMouse(_THIS)
482 {
483 int i;
484 const char *mousedev;
485 const char *mousedrv;
486
487 mousedrv = SDL_getenv("SDL_MOUSEDRV");
488 mousedev = SDL_getenv("SDL_MOUSEDEV");
489 mouse_fd = -1;
490
491 /* STD MICE */
492
493 if ( mousedev == NULL ) {
494 /* FIXME someday... allow multiple mice in this driver */
495 char *ps2mice[] = {
496 "/dev/input/mice", "/dev/usbmouse", "/dev/psaux", NULL
497 };
498 /* First try to use GPM in repeater mode */
499 if ( mouse_fd < 0 ) {
500 if ( gpm_available() ) {
501 mouse_fd = open(GPM_NODE_FIFO, O_RDONLY, 0);
502 if ( mouse_fd >= 0 ) {
503 #ifdef DEBUG_MOUSE
504 fprintf(stderr, "Using GPM mouse\n");
505 #endif
506 mouse_drv = MOUSE_GPM;
507 }
508 }
509 }
510 /* Now try to use a modern PS/2 mouse */
511 for ( i=0; (mouse_fd < 0) && ps2mice[i]; ++i ) {
512 mouse_fd = open(ps2mice[i], O_RDWR, 0);
513 if (mouse_fd < 0) {
514 mouse_fd = open(ps2mice[i], O_RDONLY, 0);
515 }
516 if (mouse_fd >= 0) {
517 /* rcg06112001 Attempt to set IMPS/2 mode */
518 if ( i == 0 ) {
519 set_imps2_mode(mouse_fd);
520 }
521 if (detect_imps2(mouse_fd)) {
522 #ifdef DEBUG_MOUSE
523 fprintf(stderr, "Using IMPS2 mouse\n");
524 #endif
525 mouse_drv = MOUSE_IMPS2;
526 } else {
527 mouse_drv = MOUSE_PS2;
528 #ifdef DEBUG_MOUSE
529 fprintf(stderr, "Using PS2 mouse\n");
530 #endif
531 }
532 }
533 }
534 /* Next try to use a PPC ADB port mouse */
535 if ( mouse_fd < 0 ) {
536 mouse_fd = open("/dev/adbmouse", O_RDONLY, 0);
537 if ( mouse_fd >= 0 ) {
538 #ifdef DEBUG_MOUSE
539 fprintf(stderr, "Using ADB mouse\n");
540 #endif
541 mouse_drv = MOUSE_BM;
542 }
543 }
544 }
545 /* Default to a serial Microsoft mouse */
546 if ( mouse_fd < 0 ) {
547 if ( mousedev == NULL ) {
548 mousedev = "/dev/mouse";
549 }
550 mouse_fd = open(mousedev, O_RDONLY, 0);
551 if ( mouse_fd >= 0 ) {
552 struct termios mouse_termios;
553
554 /* Set the sampling speed to 1200 baud */
555 tcgetattr(mouse_fd, &mouse_termios);
556 mouse_termios.c_iflag = IGNBRK | IGNPAR;
557 mouse_termios.c_oflag = 0;
558 mouse_termios.c_lflag = 0;
559 mouse_termios.c_line = 0;
560 mouse_termios.c_cc[VTIME] = 0;
561 mouse_termios.c_cc[VMIN] = 1;
562 mouse_termios.c_cflag = CREAD | CLOCAL | HUPCL;
563 mouse_termios.c_cflag |= CS8;
564 mouse_termios.c_cflag |= B1200;
565 tcsetattr(mouse_fd, TCSAFLUSH, &mouse_termios);
566 #ifdef DEBUG_MOUSE
567 fprintf(stderr, "Using Microsoft mouse on %s\n", mousedev);
568 #endif
569 mouse_drv = MOUSE_MS;
570 }
571 }
572 if ( mouse_fd < 0 ) {
573 mouse_drv = MOUSE_NONE;
574 }
575 return(mouse_fd);
576 }
577
578 static int posted = 0;
579
GS_vgamousecallback(int button,int dx,int dy)580 void GS_vgamousecallback(int button, int dx, int dy)
581 {
582 int button_1, button_3;
583 int button_state;
584 int state_changed;
585 int i;
586 Uint8 state;
587
588 if ( dx || dy ) {
589 posted += SDL_PrivateMouseMotion(0, 1, dx, dy);
590 }
591
592 /* Swap button 1 and 3 */
593 button_1 = (button & 0x04) >> 2;
594 button_3 = (button & 0x01) << 2;
595 button &= ~0x05;
596 button |= (button_1|button_3);
597
598 /* See what changed */
599 button_state = SDL_GetMouseState(NULL, NULL);
600 state_changed = button_state ^ button;
601 for ( i=0; i<8; ++i ) {
602 if ( state_changed & (1<<i) ) {
603 if ( button & (1<<i) ) {
604 state = SDL_PRESSED;
605 } else {
606 state = SDL_RELEASED;
607 }
608 posted += SDL_PrivateMouseButton(state, i+1, 0, 0);
609 }
610 }
611 }
612
613 /* For now, use GPM, PS/2, and MS protocols
614 Driver adapted from the SVGAlib mouse driver code (taken from gpm, etc.)
615 */
handle_mouse(_THIS)616 static void handle_mouse(_THIS)
617 {
618 static int start = 0;
619 static unsigned char mousebuf[BUFSIZ];
620 int i, nread;
621 int button = 0;
622 int dx = 0, dy = 0;
623 int packetsize = 0;
624
625 /* Figure out the mouse packet size */
626 switch (mouse_drv) {
627 case MOUSE_NONE:
628 /* Ack! */
629 read(mouse_fd, mousebuf, BUFSIZ);
630 return;
631 case MOUSE_GPM:
632 packetsize = 5;
633 break;
634 case MOUSE_IMPS2:
635 packetsize = 4;
636 break;
637 case MOUSE_PS2:
638 case MOUSE_MS:
639 case MOUSE_BM:
640 packetsize = 3;
641 break;
642 case NUM_MOUSE_DRVS:
643 /* Uh oh.. */
644 packetsize = 0;
645 break;
646 }
647
648 /* Read as many packets as possible */
649 nread = read(mouse_fd, &mousebuf[start], BUFSIZ-start);
650 if ( nread < 0 ) {
651 return;
652 }
653 nread += start;
654 #ifdef DEBUG_MOUSE
655 fprintf(stderr, "Read %d bytes from mouse, start = %d\n", nread, start);
656 #endif
657 for ( i=0; i<(nread-(packetsize-1)); i += packetsize ) {
658 switch (mouse_drv) {
659 case MOUSE_NONE:
660 break;
661 case MOUSE_GPM:
662 /* GPM protocol has 0x80 in high byte */
663 if ( (mousebuf[i] & 0xF8) != 0x80 ) {
664 /* Go to next byte */
665 i -= (packetsize-1);
666 continue;
667 }
668 /* Get current mouse state */
669 button = (~mousebuf[i]) & 0x07;
670 dx = (signed char)(mousebuf[i+1]) +
671 (signed char)(mousebuf[i+3]);
672 dy = -((signed char)(mousebuf[i+2]) +
673 (signed char)(mousebuf[i+4]));
674 break;
675 case MOUSE_PS2:
676 /* PS/2 protocol has nothing in high byte */
677 if ( (mousebuf[i] & 0xC0) != 0 ) {
678 /* Go to next byte */
679 i -= (packetsize-1);
680 continue;
681 }
682 /* Get current mouse state */
683 button = (mousebuf[i] & 0x04) >> 1 | /*Middle*/
684 (mousebuf[i] & 0x02) >> 1 | /*Right*/
685 (mousebuf[i] & 0x01) << 2; /*Left*/
686 dx = (mousebuf[i] & 0x10) ?
687 mousebuf[i+1] - 256 : mousebuf[i+1];
688 dy = (mousebuf[i] & 0x20) ?
689 -(mousebuf[i+2] - 256) : -mousebuf[i+2];
690 break;
691 case MOUSE_IMPS2:
692 /* Get current mouse state */
693 button = (mousebuf[i] & 0x04) >> 1 | /*Middle*/
694 (mousebuf[i] & 0x02) >> 1 | /*Right*/
695 (mousebuf[i] & 0x01) << 2 | /*Left*/
696 (mousebuf[i] & 0x40) >> 3 | /* 4 */
697 (mousebuf[i] & 0x80) >> 3; /* 5 */
698 dx = (mousebuf[i] & 0x10) ?
699 mousebuf[i+1] - 256 : mousebuf[i+1];
700 dy = (mousebuf[i] & 0x20) ?
701 -(mousebuf[i+2] - 256) : -mousebuf[i+2];
702 switch (mousebuf[i+3]&0x0F) {
703 case 0x0E: /* DX = +1 */
704 case 0x02: /* DX = -1 */
705 break;
706 case 0x0F: /* DY = +1 (map button 4) */
707 FB_vgamousecallback(button | (1<<3),
708 1, 0, 0);
709 break;
710 case 0x01: /* DY = -1 (map button 5) */
711 FB_vgamousecallback(button | (1<<4),
712 1, 0, 0);
713 break;
714 }
715 break;
716 case MOUSE_MS:
717 /* Microsoft protocol has 0x40 in high byte */
718 if ( (mousebuf[i] & 0x40) != 0x40 ) {
719 /* Go to next byte */
720 i -= (packetsize-1);
721 continue;
722 }
723 /* Get current mouse state */
724 button = ((mousebuf[i] & 0x20) >> 3) |
725 ((mousebuf[i] & 0x10) >> 4);
726 dx = (signed char)(((mousebuf[i] & 0x03) << 6) |
727 (mousebuf[i + 1] & 0x3F));
728 dy = (signed char)(((mousebuf[i] & 0x0C) << 4) |
729 (mousebuf[i + 2] & 0x3F));
730 break;
731 case MOUSE_BM:
732 /* BusMouse protocol has 0xF8 in high byte */
733 if ( (mousebuf[i] & 0xF8) != 0x80 ) {
734 /* Go to next byte */
735 i -= (packetsize-1);
736 continue;
737 }
738 /* Get current mouse state */
739 button = (~mousebuf[i]) & 0x07;
740 dx = (signed char)mousebuf[i+1];
741 dy = -(signed char)mousebuf[i+2];
742 break;
743 case NUM_MOUSE_DRVS:
744 /* Uh oh.. */
745 dx = 0;
746 dy = 0;
747 break;
748 }
749 GS_vgamousecallback(button, dx, dy);
750 }
751 if ( i < nread ) {
752 SDL_memcpy(mousebuf, &mousebuf[i], (nread-i));
753 start = (nread-i);
754 } else {
755 start = 0;
756 }
757 return;
758 }
759
handle_keyboard(_THIS)760 static void handle_keyboard(_THIS)
761 {
762 unsigned char keybuf[BUFSIZ];
763 int i, nread;
764 int pressed;
765 int scancode;
766 SDL_keysym keysym;
767
768 nread = read(keyboard_fd, keybuf, BUFSIZ);
769 for ( i=0; i<nread; ++i ) {
770 scancode = keybuf[i] & 0x7F;
771 if ( keybuf[i] & 0x80 ) {
772 pressed = SDL_RELEASED;
773 } else {
774 pressed = SDL_PRESSED;
775 }
776 TranslateKey(scancode, &keysym);
777 posted += SDL_PrivateKeyboard(pressed, &keysym);
778 }
779 }
780
GS_PumpEvents(_THIS)781 void GS_PumpEvents(_THIS)
782 {
783 fd_set fdset;
784 int max_fd;
785 static struct timeval zero;
786
787 do {
788 posted = 0;
789
790 FD_ZERO(&fdset);
791 max_fd = 0;
792 if ( keyboard_fd >= 0 ) {
793 FD_SET(keyboard_fd, &fdset);
794 if ( max_fd < keyboard_fd ) {
795 max_fd = keyboard_fd;
796 }
797 }
798 if ( mouse_fd >= 0 ) {
799 FD_SET(mouse_fd, &fdset);
800 if ( max_fd < mouse_fd ) {
801 max_fd = mouse_fd;
802 }
803 }
804 if ( select(max_fd+1, &fdset, NULL, NULL, &zero) > 0 ) {
805 if ( keyboard_fd >= 0 ) {
806 if ( FD_ISSET(keyboard_fd, &fdset) ) {
807 handle_keyboard(this);
808 }
809 }
810 if ( mouse_fd >= 0 ) {
811 if ( FD_ISSET(mouse_fd, &fdset) ) {
812 handle_mouse(this);
813 }
814 }
815 }
816 } while ( posted );
817 }
818
GS_InitOSKeymap(_THIS)819 void GS_InitOSKeymap(_THIS)
820 {
821 int i;
822
823 /* Initialize the Linux key translation table */
824
825 /* First get the ascii keys and others not well handled */
826 for (i=0; i<SDL_arraysize(keymap); ++i) {
827 switch(i) {
828 /* These aren't handled by the x86 kernel keymapping (?) */
829 case SCANCODE_PRINTSCREEN:
830 keymap[i] = SDLK_PRINT;
831 break;
832 case SCANCODE_BREAK:
833 keymap[i] = SDLK_BREAK;
834 break;
835 case SCANCODE_BREAK_ALTERNATIVE:
836 keymap[i] = SDLK_PAUSE;
837 break;
838 case SCANCODE_LEFTSHIFT:
839 keymap[i] = SDLK_LSHIFT;
840 break;
841 case SCANCODE_RIGHTSHIFT:
842 keymap[i] = SDLK_RSHIFT;
843 break;
844 case SCANCODE_LEFTCONTROL:
845 keymap[i] = SDLK_LCTRL;
846 break;
847 case SCANCODE_RIGHTCONTROL:
848 keymap[i] = SDLK_RCTRL;
849 break;
850 case SCANCODE_RIGHTWIN:
851 keymap[i] = SDLK_RSUPER;
852 break;
853 case SCANCODE_LEFTWIN:
854 keymap[i] = SDLK_LSUPER;
855 break;
856 case 127:
857 keymap[i] = SDLK_MENU;
858 break;
859 /* this should take care of all standard ascii keys */
860 default:
861 keymap[i] = KVAL(vga_keymap[0][i]);
862 break;
863 }
864 }
865 for (i=0; i<SDL_arraysize(keymap); ++i) {
866 switch(keymap_temp[i]) {
867 case K_F1: keymap[i] = SDLK_F1; break;
868 case K_F2: keymap[i] = SDLK_F2; break;
869 case K_F3: keymap[i] = SDLK_F3; break;
870 case K_F4: keymap[i] = SDLK_F4; break;
871 case K_F5: keymap[i] = SDLK_F5; break;
872 case K_F6: keymap[i] = SDLK_F6; break;
873 case K_F7: keymap[i] = SDLK_F7; break;
874 case K_F8: keymap[i] = SDLK_F8; break;
875 case K_F9: keymap[i] = SDLK_F9; break;
876 case K_F10: keymap[i] = SDLK_F10; break;
877 case K_F11: keymap[i] = SDLK_F11; break;
878 case K_F12: keymap[i] = SDLK_F12; break;
879
880 case K_DOWN: keymap[i] = SDLK_DOWN; break;
881 case K_LEFT: keymap[i] = SDLK_LEFT; break;
882 case K_RIGHT: keymap[i] = SDLK_RIGHT; break;
883 case K_UP: keymap[i] = SDLK_UP; break;
884
885 case K_P0: keymap[i] = SDLK_KP0; break;
886 case K_P1: keymap[i] = SDLK_KP1; break;
887 case K_P2: keymap[i] = SDLK_KP2; break;
888 case K_P3: keymap[i] = SDLK_KP3; break;
889 case K_P4: keymap[i] = SDLK_KP4; break;
890 case K_P5: keymap[i] = SDLK_KP5; break;
891 case K_P6: keymap[i] = SDLK_KP6; break;
892 case K_P7: keymap[i] = SDLK_KP7; break;
893 case K_P8: keymap[i] = SDLK_KP8; break;
894 case K_P9: keymap[i] = SDLK_KP9; break;
895 case K_PPLUS: keymap[i] = SDLK_KP_PLUS; break;
896 case K_PMINUS: keymap[i] = SDLK_KP_MINUS; break;
897 case K_PSTAR: keymap[i] = SDLK_KP_MULTIPLY; break;
898 case K_PSLASH: keymap[i] = SDLK_KP_DIVIDE; break;
899 case K_PENTER: keymap[i] = SDLK_KP_ENTER; break;
900 case K_PDOT: keymap[i] = SDLK_KP_PERIOD; break;
901
902 case K_SHIFT: if ( keymap[i] != SDLK_RSHIFT )
903 keymap[i] = SDLK_LSHIFT;
904 break;
905 case K_SHIFTL: keymap[i] = SDLK_LSHIFT; break;
906 case K_SHIFTR: keymap[i] = SDLK_RSHIFT; break;
907 case K_CTRL: if ( keymap[i] != SDLK_RCTRL )
908 keymap[i] = SDLK_LCTRL;
909 break;
910 case K_CTRLL: keymap[i] = SDLK_LCTRL; break;
911 case K_CTRLR: keymap[i] = SDLK_RCTRL; break;
912 case K_ALT: keymap[i] = SDLK_LALT; break;
913 case K_ALTGR: keymap[i] = SDLK_RALT; break;
914
915 case K_INSERT: keymap[i] = SDLK_INSERT; break;
916 case K_REMOVE: keymap[i] = SDLK_DELETE; break;
917 case K_PGUP: keymap[i] = SDLK_PAGEUP; break;
918 case K_PGDN: keymap[i] = SDLK_PAGEDOWN; break;
919 case K_FIND: keymap[i] = SDLK_HOME; break;
920 case K_SELECT: keymap[i] = SDLK_END; break;
921
922 case K_NUM: keymap[i] = SDLK_NUMLOCK; break;
923 case K_CAPS: keymap[i] = SDLK_CAPSLOCK; break;
924
925 case K_F13: keymap[i] = SDLK_PRINT; break;
926 case K_HOLD: keymap[i] = SDLK_SCROLLOCK; break;
927 case K_PAUSE: keymap[i] = SDLK_PAUSE; break;
928
929 case 127: keymap[i] = SDLK_BACKSPACE; break;
930
931 default: break;
932 }
933 }
934 }
935
TranslateKey(int scancode,SDL_keysym * keysym)936 static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym)
937 {
938 /* Set the keysym information */
939 keysym->scancode = scancode;
940 keysym->sym = keymap[scancode];
941 keysym->mod = KMOD_NONE;
942
943 /* If UNICODE is on, get the UNICODE value for the key */
944 keysym->unicode = 0;
945 if ( SDL_TranslateUNICODE ) {
946 int map;
947 SDLMod modstate;
948
949 modstate = SDL_GetModState();
950 map = 0;
951 if ( modstate & KMOD_SHIFT ) {
952 map |= (1<<KG_SHIFT);
953 }
954 if ( modstate & KMOD_CTRL ) {
955 map |= (1<<KG_CTRL);
956 }
957 if ( modstate & KMOD_ALT ) {
958 map |= (1<<KG_ALT);
959 }
960 if ( modstate & KMOD_MODE ) {
961 map |= (1<<KG_ALTGR);
962 }
963 if ( KTYP(vga_keymap[map][scancode]) == KT_LETTER ) {
964 if ( modstate & KMOD_CAPS ) {
965 map ^= (1<<KG_SHIFT);
966 }
967 }
968 if ( KTYP(vga_keymap[map][scancode]) == KT_PAD ) {
969 if ( modstate & KMOD_NUM ) {
970 keysym->unicode=KVAL(vga_keymap[map][scancode]);
971 }
972 } else {
973 keysym->unicode = KVAL(vga_keymap[map][scancode]);
974 }
975 }
976 return(keysym);
977 }
978