source: mainline/uspace/console/console.c@ c8410ec9

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since c8410ec9 was 00bb6965, checked in by Jakub Jermar <jakub@…>, 19 years ago

Coding style fixes.
  • Property mode set to 100644
File size: 13.6 KB
Line 
1/*
2 * Copyright (C) 2006 Josef Cejka
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup console
30 * @{
31 */
32/** @file
33 */
34
35/* TODO: remove */
36#include <stdio.h>
37
38#include <fb.h>
39#include <ipc/ipc.h>
40#include <keys.h>
41#include <ipc/fb.h>
42#include <ipc/services.h>
43#include <errno.h>
44#include <key_buffer.h>
45#include <console.h>
46#include <unistd.h>
47#include <async.h>
48#include <libadt/fifo.h>
49#include <screenbuffer.h>
50#include <sys/mman.h>
51
52#include "gcons.h"
53
54#define MAX_KEYREQUESTS_BUFFERED 32
55
56#define NAME "CONSOLE"
57
58/** Index of currently used virtual console.
59 */
60int active_console = 0;
61
62/** Information about framebuffer
63 */
64struct {
65 int phone; /**< Framebuffer phone */
66 ipcarg_t rows; /**< Framebuffer rows */
67 ipcarg_t cols; /**< Framebuffer columns */
68} fb_info;
69
70
71typedef struct {
72 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
73 /** Buffer for unsatisfied request for keys. */
74 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t,
75 MAX_KEYREQUESTS_BUFFERED);
76 int keyrequest_counter; /**< Number of requests in buffer. */
77 int client_phone; /**< Phone to connected client. */
78 int used; /**< 1 if this virtual console is
79 * connected to some client.*/
80 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen
81 * contents and related settings. */
82} connection_t;
83
84static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual
85 * consoles */
86static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared
87 * with framebufer used for
88 * faster virtual console
89 *switching */
90
91static int kernel_pixmap = -1; /**< Number of fb pixmap, where kernel
92 * console is stored */
93
94
95/** Find unused virtual console.
96 *
97 */
98static int find_free_connection(void)
99{
100 int i = 0;
101
102 for (i=0; i < CONSOLE_COUNT; i++) {
103 if (!connections[i].used)
104 return i;
105 }
106 return -1;
107}
108
109static void clrscr(void)
110{
111 async_msg(fb_info.phone, FB_CLEAR, 0);
112}
113
114static void curs_visibility(int v)
115{
116 async_msg(fb_info.phone, FB_CURSOR_VISIBILITY, v);
117}
118
119static void curs_goto(int row, int col)
120{
121 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
122
123}
124
125static void set_style(style_t *style)
126{
127 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color,
128 style->bg_color);
129}
130
131static void set_style_col(int fgcolor, int bgcolor)
132{
133 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
134}
135
136static void prtchr(char c, int row, int col)
137{
138 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
139
140}
141
142/** Check key and process special keys.
143 *
144 * */
145static void write_char(int console, char key)
146{
147 screenbuffer_t *scr = &(connections[console].screenbuffer);
148
149 switch (key) {
150 case '\n':
151 scr->position_y += 1;
152 scr->position_x = 0;
153 break;
154 case '\r':
155 break;
156 case '\t':
157 scr->position_x += 8;
158 scr->position_x -= scr->position_x % 8;
159 break;
160 case '\b':
161 if (scr->position_x == 0)
162 break;
163 scr->position_x--;
164 if (console == active_console)
165 prtchr(' ', scr->position_y, scr->position_x);
166 screenbuffer_putchar(scr, ' ');
167 break;
168 default:
169 if (console == active_console)
170 prtchr(key, scr->position_y, scr->position_x);
171
172 screenbuffer_putchar(scr, key);
173 scr->position_x++;
174 }
175
176 scr->position_y += (scr->position_x >= scr->size_x);
177
178 if (scr->position_y >= scr->size_y) {
179 scr->position_y = scr->size_y - 1;
180 screenbuffer_clear_line(scr, scr->top_line);
181 scr->top_line = (scr->top_line+1) % scr->size_y;
182 if (console == active_console)
183 async_msg(fb_info.phone, FB_SCROLL, 1);
184 }
185
186 scr->position_x = scr->position_x % scr->size_x;
187
188 if (console == active_console)
189 curs_goto(scr->position_y, scr->position_x);
190
191}
192
193/** Save current screen to pixmap, draw old pixmap
194 *
195 * @param oldpixmap Old pixmap
196 * @return ID of pixmap of current screen
197 */
198static int switch_screens(int oldpixmap)
199{
200 int newpmap;
201
202 /* Save screen */
203 newpmap = async_req(fb_info.phone, FB_VP2PIXMAP, 0, NULL);
204 if (newpmap < 0)
205 return -1;
206
207 if (oldpixmap != -1) {
208 /* Show old screen */
209 async_msg_2(fb_info.phone, FB_VP_DRAW_PIXMAP, 0, oldpixmap);
210 /* Drop old pixmap */
211 async_msg(fb_info.phone, FB_DROP_PIXMAP, oldpixmap);
212 }
213
214 return newpmap;
215}
216
217/** Switch to new console */
218static void change_console(int newcons)
219{
220 connection_t *conn;
221 static int console_pixmap = -1;
222 int i, j, rc;
223 keyfield_t *field;
224 style_t *style;
225
226 if (newcons == active_console)
227 return;
228
229 if (newcons == KERNEL_CONSOLE) {
230 if (active_console == KERNEL_CONSOLE)
231 return;
232 active_console = KERNEL_CONSOLE;
233 curs_visibility(0);
234
235 async_serialize_start();
236 if (kernel_pixmap == -1) {
237 /* store/restore unsupported */
238 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
239 clrscr();
240 } else {
241 gcons_in_kernel();
242 console_pixmap = switch_screens(kernel_pixmap);
243 kernel_pixmap = -1;
244 }
245 async_serialize_end();
246
247 __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
248 return;
249 }
250
251 async_serialize_start();
252
253 if (console_pixmap != -1) {
254 kernel_pixmap = switch_screens(console_pixmap);
255 console_pixmap = -1;
256 }
257 active_console = newcons;
258 gcons_change_console(newcons);
259 conn = &connections[active_console];
260
261 set_style(&conn->screenbuffer.style);
262 curs_visibility(0);
263 if (interbuffer) {
264 for (i = 0; i < conn->screenbuffer.size_x; i++)
265 for (j = 0; j < conn->screenbuffer.size_y; j++)
266 interbuffer[i + j * conn->screenbuffer.size_x]
267 = *get_field_at(&(conn->screenbuffer),
268 i, j);
269 /* This call can preempt, but we are already at the end */
270 rc = async_req_2(fb_info.phone, FB_DRAW_TEXT_DATA, 0, 0, NULL,
271 NULL);
272 };
273
274 if ((!interbuffer) || (rc != 0)) {
275 set_style(&conn->screenbuffer.style);
276 clrscr();
277 style = &conn->screenbuffer.style;
278
279 for (j = 0; j < conn->screenbuffer.size_y; j++)
280 for (i = 0; i < conn->screenbuffer.size_x; i++) {
281 field = get_field_at(&(conn->screenbuffer), i,
282 j);
283 if (!style_same(*style, field->style))
284 set_style(&field->style);
285 style = &field->style;
286 if ((field->character == ' ') &&
287 (style_same(field->style,
288 conn->screenbuffer.style)))
289 continue;
290
291 prtchr(field->character, j, i);
292 }
293 }
294
295 curs_goto(conn->screenbuffer.position_y,
296 conn->screenbuffer.position_x);
297 curs_visibility(conn->screenbuffer.is_cursor_visible);
298
299 async_serialize_end();
300}
301
302/** Handler for keyboard */
303static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
304{
305 ipc_callid_t callid;
306 ipc_call_t call;
307 int retval;
308 int c;
309 connection_t *conn;
310 int newcon;
311
312 /* Ignore parameters, the connection is alread opened */
313 while (1) {
314 callid = async_get_call(&call);
315 switch (IPC_GET_METHOD(call)) {
316 case IPC_M_PHONE_HUNGUP:
317 /* TODO: Handle hangup */
318 return;
319 case KBD_MS_LEFT:
320 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
321 if (newcon != -1)
322 change_console(newcon);
323 retval = 0;
324 break;
325 case KBD_MS_MOVE:
326 gcons_mouse_move(IPC_GET_ARG1(call),
327 IPC_GET_ARG2(call));
328 retval = 0;
329 break;
330 case KBD_PUSHCHAR:
331 /* got key from keyboard driver */
332
333 retval = 0;
334 c = IPC_GET_ARG1(call);
335 /* switch to another virtual console */
336
337 conn = &connections[active_console];
338/*
339 * if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 +
340 * CONSOLE_COUNT)) {
341 */
342 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
343 if (c == 0x112)
344 change_console(KERNEL_CONSOLE);
345 else
346 change_console(c - 0x101);
347 break;
348 }
349
350 /* if client is awaiting key, send it */
351 if (conn->keyrequest_counter > 0) {
352 conn->keyrequest_counter--;
353 ipc_answer_fast(fifo_pop(conn->keyrequests), 0,
354 c, 0);
355 break;
356 }
357
358 keybuffer_push(&conn->keybuffer, c);
359 retval = 0;
360
361 break;
362 default:
363 retval = ENOENT;
364 }
365 ipc_answer_fast(callid, retval, 0, 0);
366 }
367}
368
369/** Default thread for new connections */
370static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
371{
372 ipc_callid_t callid;
373 ipc_call_t call;
374 int consnum;
375 ipcarg_t arg1, arg2;
376 connection_t *conn;
377
378 if ((consnum = find_free_connection()) == -1) {
379 ipc_answer_fast(iid,ELIMIT,0,0);
380 return;
381 }
382 conn = &connections[consnum];
383 conn->used = 1;
384
385 async_serialize_start();
386 gcons_notify_connect(consnum);
387 conn->client_phone = IPC_GET_ARG3(call);
388 screenbuffer_clear(&conn->screenbuffer);
389
390 /* Accept the connection */
391 ipc_answer_fast(iid,0,0,0);
392
393 while (1) {
394 async_serialize_end();
395 callid = async_get_call(&call);
396 async_serialize_start();
397
398 arg1 = arg2 = 0;
399 switch (IPC_GET_METHOD(call)) {
400 case IPC_M_PHONE_HUNGUP:
401 gcons_notify_disconnect(consnum);
402
403 /* Answer all pending requests */
404 while (conn->keyrequest_counter > 0) {
405 conn->keyrequest_counter--;
406 ipc_answer_fast(fifo_pop(conn->keyrequests),
407 ENOENT, 0, 0);
408 break;
409 }
410 conn->used = 0;
411 return;
412 case CONSOLE_PUTCHAR:
413 write_char(consnum, IPC_GET_ARG1(call));
414 gcons_notify_char(consnum);
415 break;
416 case CONSOLE_CLEAR:
417 /* Send message to fb */
418 if (consnum == active_console) {
419 async_msg(fb_info.phone, FB_CLEAR, 0);
420 }
421
422 screenbuffer_clear(&conn->screenbuffer);
423
424 break;
425 case CONSOLE_GOTO:
426 screenbuffer_goto(&conn->screenbuffer,
427 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
428 if (consnum == active_console)
429 curs_goto(IPC_GET_ARG1(call),
430 IPC_GET_ARG2(call));
431 break;
432 case CONSOLE_GETSIZE:
433 arg1 = fb_info.rows;
434 arg2 = fb_info.cols;
435 break;
436 case CONSOLE_FLUSH:
437 if (consnum == active_console)
438 async_req_2(fb_info.phone, FB_FLUSH, 0, 0,
439 NULL, NULL);
440 break;
441 case CONSOLE_SET_STYLE:
442 arg1 = IPC_GET_ARG1(call);
443 arg2 = IPC_GET_ARG2(call);
444 screenbuffer_set_style(&conn->screenbuffer,arg1, arg2);
445 if (consnum == active_console)
446 set_style_col(arg1, arg2);
447 break;
448 case CONSOLE_CURSOR_VISIBILITY:
449 arg1 = IPC_GET_ARG1(call);
450 conn->screenbuffer.is_cursor_visible = arg1;
451 if (consnum == active_console)
452 curs_visibility(arg1);
453 break;
454 case CONSOLE_GETCHAR:
455 if (keybuffer_empty(&conn->keybuffer)) {
456 /* buffer is empty -> store request */
457 if (conn->keyrequest_counter <
458 MAX_KEYREQUESTS_BUFFERED) {
459 fifo_push(conn->keyrequests, callid);
460 conn->keyrequest_counter++;
461 } else {
462 /*
463 * No key available and too many
464 * requests => fail.
465 */
466 ipc_answer_fast(callid, ELIMIT, 0, 0);
467 }
468 continue;
469 }
470 keybuffer_pop(&conn->keybuffer, (int *) &arg1);
471 break;
472 }
473 ipc_answer_fast(callid, 0, arg1, arg2);
474 }
475}
476
477int main(int argc, char *argv[])
478{
479 ipcarg_t phonehash;
480 int kbd_phone;
481 int i;
482
483 async_set_client_connection(client_connection);
484
485 /* Connect to keyboard driver */
486
487 while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0))
488 < 0) {
489 usleep(10000);
490 }
491
492 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0)
493 {
494 return -1;
495 }
496 async_new_connection(phonehash, 0, NULL, keyboard_events);
497
498 /* Connect to framebuffer driver */
499
500 while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0))
501 < 0) {
502 usleep(10000);
503 }
504
505 /* Save old kernel screen */
506 kernel_pixmap = switch_screens(-1);
507
508 /* Initialize gcons */
509 gcons_init(fb_info.phone);
510 /* Synchronize, the gcons can have something in queue */
511 async_req(fb_info.phone, FB_FLUSH, 0, NULL);
512 /* Enable double buffering */
513 async_msg_2(fb_info.phone, FB_VIEWPORT_DB, (sysarg_t)-1, 1);
514
515 async_req_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows),
516 &(fb_info.cols));
517 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
518 clrscr();
519
520 /* Init virtual consoles */
521 for (i = 0; i < CONSOLE_COUNT; i++) {
522 connections[i].used = 0;
523 keybuffer_init(&(connections[i].keybuffer));
524
525 connections[i].keyrequests.head =
526 connections[i].keyrequests.tail = 0;
527 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
528 connections[i].keyrequest_counter = 0;
529
530 if (screenbuffer_init(&(connections[i].screenbuffer),
531 fb_info.cols, fb_info.rows) == NULL) {
532 /*FIXME: handle error */
533 return -1;
534 }
535 }
536 connections[KERNEL_CONSOLE].used = 1;
537
538 if ((interbuffer = mmap(NULL, sizeof(keyfield_t) * fb_info.cols *
539 fb_info.rows, PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS |
540 MAP_PRIVATE, 0, 0)) != NULL) {
541 if (async_req_3(fb_info.phone, IPC_M_AS_AREA_SEND, (ipcarg_t)
542 interbuffer, 0, AS_AREA_READ, NULL, NULL, NULL) != 0) {
543 munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols
544 * fb_info.rows);
545 interbuffer = NULL;
546 }
547 }
548
549 curs_goto(0,0);
550 curs_visibility(connections[active_console].screenbuffer.is_cursor_visible);
551
552 /* Register at NS */
553 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
554 return -1;
555 }
556
557 async_manager();
558
559 return 0;
560}
561
562/** @}
563 */
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