source: mainline/console/console.c@ e0bfcf8

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since e0bfcf8 was a3d2939, checked in by Ondrej Palkovsky <ondrap@…>, 20 years ago

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