source: mainline/uspace/console/console.c@ df4ed85

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since df4ed85 was df4ed85, checked in by Jakub Jermar <jakub@…>, 18 years ago

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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/** @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;
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
124static void set_style(style_t *style)
125{
126 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color,
127 style->bg_color);
128}
129
130static void set_style_col(int fgcolor, int bgcolor)
131{
132 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
133}
134
135static void prtchr(char c, int row, int col)
136{
137 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
138}
139
140/** Check key and process special keys.
141 *
142 * */
143static void write_char(int console, char key)
144{
145 screenbuffer_t *scr = &(connections[console].screenbuffer);
146
147 switch (key) {
148 case '\n':
149 scr->position_y++;
150 scr->position_x = 0;
151 break;
152 case '\r':
153 break;
154 case '\t':
155 scr->position_x += 8;
156 scr->position_x -= scr->position_x % 8;
157 break;
158 case '\b':
159 if (scr->position_x == 0)
160 break;
161 scr->position_x--;
162 if (console == active_console)
163 prtchr(' ', scr->position_y, scr->position_x);
164 screenbuffer_putchar(scr, ' ');
165 break;
166 default:
167 if (console == active_console)
168 prtchr(key, scr->position_y, scr->position_x);
169
170 screenbuffer_putchar(scr, key);
171 scr->position_x++;
172 }
173
174 scr->position_y += (scr->position_x >= scr->size_x);
175
176 if (scr->position_y >= scr->size_y) {
177 scr->position_y = scr->size_y - 1;
178 screenbuffer_clear_line(scr, scr->top_line);
179 scr->top_line = (scr->top_line + 1) % scr->size_y;
180 if (console == active_console)
181 async_msg(fb_info.phone, FB_SCROLL, 1);
182 }
183
184 scr->position_x = scr->position_x % scr->size_x;
185
186 if (console == active_console)
187 curs_goto(scr->position_y, scr->position_x);
188
189}
190
191/** Save current screen to pixmap, draw old pixmap
192 *
193 * @param oldpixmap Old pixmap
194 * @return ID of pixmap of current screen
195 */
196static int switch_screens(int oldpixmap)
197{
198 int newpmap;
199
200 /* Save screen */
201 newpmap = async_req(fb_info.phone, FB_VP2PIXMAP, 0, NULL);
202 if (newpmap < 0)
203 return -1;
204
205 if (oldpixmap != -1) {
206 /* Show old screen */
207 async_msg_2(fb_info.phone, FB_VP_DRAW_PIXMAP, 0, oldpixmap);
208 /* Drop old pixmap */
209 async_msg(fb_info.phone, FB_DROP_PIXMAP, oldpixmap);
210 }
211
212 return newpmap;
213}
214
215/** Switch to new console */
216static void change_console(int newcons)
217{
218 connection_t *conn;
219 static int console_pixmap = -1;
220 int i, j, rc;
221 keyfield_t *field;
222 style_t *style;
223
224 if (newcons == active_console)
225 return;
226
227 if (newcons == KERNEL_CONSOLE) {
228 if (active_console == KERNEL_CONSOLE)
229 return;
230 active_console = KERNEL_CONSOLE;
231 curs_visibility(0);
232
233 async_serialize_start();
234 if (kernel_pixmap == -1) {
235 /* store/restore unsupported */
236 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
237 clrscr();
238 } else {
239 gcons_in_kernel();
240 console_pixmap = switch_screens(kernel_pixmap);
241 kernel_pixmap = -1;
242 }
243 async_serialize_end();
244
245 __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
246 return;
247 }
248
249 async_serialize_start();
250
251 if (console_pixmap != -1) {
252 kernel_pixmap = switch_screens(console_pixmap);
253 console_pixmap = -1;
254 }
255 active_console = newcons;
256 gcons_change_console(newcons);
257 conn = &connections[active_console];
258
259 set_style(&conn->screenbuffer.style);
260 curs_visibility(0);
261 if (interbuffer) {
262 for (i = 0; i < conn->screenbuffer.size_x; i++)
263 for (j = 0; j < conn->screenbuffer.size_y; j++)
264 interbuffer[i + j * conn->screenbuffer.size_x] =
265 *get_field_at(&(conn->screenbuffer),
266 i, j);
267 /* This call can preempt, but we are already at the end */
268 rc = async_req_2(fb_info.phone, FB_DRAW_TEXT_DATA, 0, 0, NULL,
269 NULL);
270 };
271
272 if ((!interbuffer) || (rc != 0)) {
273 set_style(&conn->screenbuffer.style);
274 clrscr();
275 style = &conn->screenbuffer.style;
276
277 for (j = 0; j < conn->screenbuffer.size_y; j++)
278 for (i = 0; i < conn->screenbuffer.size_x; i++) {
279 field = get_field_at(&(conn->screenbuffer), i,
280 j);
281 if (!style_same(*style, field->style))
282 set_style(&field->style);
283 style = &field->style;
284 if ((field->character == ' ') &&
285 (style_same(field->style,
286 conn->screenbuffer.style)))
287 continue;
288
289 prtchr(field->character, j, i);
290 }
291 }
292
293 curs_goto(conn->screenbuffer.position_y,
294 conn->screenbuffer.position_x);
295 curs_visibility(conn->screenbuffer.is_cursor_visible);
296
297 async_serialize_end();
298}
299
300/** Handler for keyboard */
301static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
302{
303 ipc_callid_t callid;
304 ipc_call_t call;
305 int retval;
306 int c;
307 connection_t *conn;
308 int newcon;
309
310 /* Ignore parameters, the connection is alread opened */
311 while (1) {
312 callid = async_get_call(&call);
313 switch (IPC_GET_METHOD(call)) {
314 case IPC_M_PHONE_HUNGUP:
315 /* TODO: Handle hangup */
316 return;
317 case KBD_MS_LEFT:
318 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
319 if (newcon != -1)
320 change_console(newcon);
321 retval = 0;
322 break;
323 case KBD_MS_MOVE:
324 gcons_mouse_move(IPC_GET_ARG1(call),
325 IPC_GET_ARG2(call));
326 retval = 0;
327 break;
328 case KBD_PUSHCHAR:
329 /* got key from keyboard driver */
330
331 retval = 0;
332 c = IPC_GET_ARG1(call);
333 /* switch to another virtual console */
334
335 conn = &connections[active_console];
336/*
337 * if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 +
338 * CONSOLE_COUNT)) {
339 */
340 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
341 if (c == 0x112)
342 change_console(KERNEL_CONSOLE);
343 else
344 change_console(c - 0x101);
345 break;
346 }
347
348 /* if client is awaiting key, send it */
349 if (conn->keyrequest_counter > 0) {
350 conn->keyrequest_counter--;
351 ipc_answer_fast(fifo_pop(conn->keyrequests), 0,
352 c, 0);
353 break;
354 }
355
356 keybuffer_push(&conn->keybuffer, c);
357 retval = 0;
358
359 break;
360 default:
361 retval = ENOENT;
362 }
363 ipc_answer_fast(callid, retval, 0, 0);
364 }
365}
366
367/** Default thread for new connections */
368static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
369{
370 ipc_callid_t callid;
371 ipc_call_t call;
372 int consnum;
373 ipcarg_t arg1, arg2;
374 connection_t *conn;
375
376 if ((consnum = find_free_connection()) == -1) {
377 ipc_answer_fast(iid,ELIMIT,0,0);
378 return;
379 }
380 conn = &connections[consnum];
381 conn->used = 1;
382
383 async_serialize_start();
384 gcons_notify_connect(consnum);
385 conn->client_phone = IPC_GET_ARG3(call);
386 screenbuffer_clear(&conn->screenbuffer);
387
388 /* Accept the connection */
389 ipc_answer_fast(iid, 0, 0, 0);
390
391 while (1) {
392 async_serialize_end();
393 callid = async_get_call(&call);
394 async_serialize_start();
395
396 arg1 = arg2 = 0;
397 switch (IPC_GET_METHOD(call)) {
398 case IPC_M_PHONE_HUNGUP:
399 gcons_notify_disconnect(consnum);
400
401 /* Answer all pending requests */
402 while (conn->keyrequest_counter > 0) {
403 conn->keyrequest_counter--;
404 ipc_answer_fast(fifo_pop(conn->keyrequests),
405 ENOENT, 0, 0);
406 break;
407 }
408 conn->used = 0;
409 return;
410 case CONSOLE_PUTCHAR:
411 write_char(consnum, IPC_GET_ARG1(call));
412 gcons_notify_char(consnum);
413 break;
414 case CONSOLE_CLEAR:
415 /* Send message to fb */
416 if (consnum == active_console) {
417 async_msg(fb_info.phone, FB_CLEAR, 0);
418 }
419
420 screenbuffer_clear(&conn->screenbuffer);
421
422 break;
423 case CONSOLE_GOTO:
424 screenbuffer_goto(&conn->screenbuffer,
425 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
426 if (consnum == active_console)
427 curs_goto(IPC_GET_ARG1(call),
428 IPC_GET_ARG2(call));
429 break;
430 case CONSOLE_GETSIZE:
431 arg1 = fb_info.rows;
432 arg2 = fb_info.cols;
433 break;
434 case CONSOLE_FLUSH:
435 if (consnum == active_console)
436 async_req_2(fb_info.phone, FB_FLUSH, 0, 0,
437 NULL, NULL);
438 break;
439 case CONSOLE_SET_STYLE:
440 arg1 = IPC_GET_ARG1(call);
441 arg2 = IPC_GET_ARG2(call);
442 screenbuffer_set_style(&conn->screenbuffer, arg1, arg2);
443 if (consnum == active_console)
444 set_style_col(arg1, arg2);
445 break;
446 case CONSOLE_CURSOR_VISIBILITY:
447 arg1 = IPC_GET_ARG1(call);
448 conn->screenbuffer.is_cursor_visible = arg1;
449 if (consnum == active_console)
450 curs_visibility(arg1);
451 break;
452 case CONSOLE_GETCHAR:
453 if (keybuffer_empty(&conn->keybuffer)) {
454 /* buffer is empty -> store request */
455 if (conn->keyrequest_counter <
456 MAX_KEYREQUESTS_BUFFERED) {
457 fifo_push(conn->keyrequests, callid);
458 conn->keyrequest_counter++;
459 } else {
460 /*
461 * No key available and too many
462 * requests => fail.
463 */
464 ipc_answer_fast(callid, ELIMIT, 0, 0);
465 }
466 continue;
467 }
468 keybuffer_pop(&conn->keybuffer, (int *) &arg1);
469 break;
470 }
471 ipc_answer_fast(callid, 0, arg1, arg2);
472 }
473}
474
475int main(int argc, char *argv[])
476{
477 ipcarg_t phonehash;
478 int kbd_phone;
479 int i;
480
481 async_set_client_connection(client_connection);
482
483 /* Connect to keyboard driver */
484
485 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0);
486 while (kbd_phone < 0) {
487 usleep(10000);
488 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0);
489 }
490
491 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0)
492 return -1;
493 async_new_connection(phonehash, 0, NULL, keyboard_events);
494
495 /* Connect to framebuffer driver */
496
497 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0);
498 while (fb_info.phone < 0) {
499 usleep(10000);
500 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0);
501 }
502
503 /* Save old kernel screen */
504 kernel_pixmap = switch_screens(-1);
505
506 /* Initialize gcons */
507 gcons_init(fb_info.phone);
508 /* Synchronize, the gcons can have something in queue */
509 async_req(fb_info.phone, FB_FLUSH, 0, NULL);
510 /* Enable double buffering */
511 async_msg_2(fb_info.phone, FB_VIEWPORT_DB, (sysarg_t) -1, 1);
512
513 async_req_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows),
514 &(fb_info.cols));
515 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
516 clrscr();
517
518 /* Init virtual consoles */
519 for (i = 0; i < CONSOLE_COUNT; i++) {
520 connections[i].used = 0;
521 keybuffer_init(&(connections[i].keybuffer));
522
523 connections[i].keyrequests.head =
524 connections[i].keyrequests.tail = 0;
525 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
526 connections[i].keyrequest_counter = 0;
527
528 if (screenbuffer_init(&(connections[i].screenbuffer),
529 fb_info.cols, fb_info.rows) == NULL) {
530 /* FIXME: handle error */
531 return -1;
532 }
533 }
534 connections[KERNEL_CONSOLE].used = 1;
535
536 interbuffer = mmap(NULL,
537 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
538 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
539 if (!interbuffer) {
540 if (async_req_3(fb_info.phone, IPC_M_AS_AREA_SEND, (ipcarg_t)
541 interbuffer, 0, AS_AREA_READ, NULL, NULL, NULL) != 0) {
542 munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols
543 * fb_info.rows);
544 interbuffer = NULL;
545 }
546 }
547
548 curs_goto(0, 0);
549 curs_visibility(connections[active_console].screenbuffer.is_cursor_visible);
550
551 /* Register at NS */
552 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
553 return -1;
554 }
555
556 async_manager();
557
558 return 0;
559}
560
561/** @}
562 */
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