source: mainline/uspace/srv/console/console.c@ 8c20b26

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 8c20b26 was 01f5e17, checked in by Jakub Jermar <jakub@…>, 18 years ago

Cstyle and other minor fixes in the console code.
  • Property mode set to 100644
File size: 13.9 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
70typedef struct {
71 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
72 /** Buffer for unsatisfied request for keys. */
73 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t,
74 MAX_KEYREQUESTS_BUFFERED);
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
78 * connected to some client.*/
79 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen
80 * contents and related settings. */
81} connection_t;
82
83static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual
84 * consoles */
85static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared
86 * with framebufer used for
87 * faster virtual console
88 * switching */
89
90static int kernel_pixmap = -1; /**< Number of fb pixmap, where kernel
91 * console is stored */
92
93
94/** Find unused virtual console.
95 *
96 */
97static int find_free_connection(void)
98{
99 int i;
100
101 for (i = 0; i < CONSOLE_COUNT; i++) {
102 if (!connections[i].used)
103 return i;
104 }
105 return -1;
106}
107
108static void clrscr(void)
109{
110 async_msg(fb_info.phone, FB_CLEAR, 0);
111}
112
113static void curs_visibility(int v)
114{
115 async_msg(fb_info.phone, FB_CURSOR_VISIBILITY, v);
116}
117
118static void curs_goto(int row, int col)
119{
120 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
121}
122
123static void set_style(style_t *style)
124{
125 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color,
126 style->bg_color);
127}
128
129static void set_style_col(int fgcolor, int bgcolor)
130{
131 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
132}
133
134static void prtchr(char c, int row, int col)
135{
136 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
137}
138
139/** Check key and process special keys.
140 *
141 * */
142static void write_char(int console, char key)
143{
144 screenbuffer_t *scr = &(connections[console].screenbuffer);
145
146 switch (key) {
147 case '\n':
148 scr->position_y++;
149 scr->position_x = 0;
150 break;
151 case '\r':
152 break;
153 case '\t':
154 scr->position_x += 8;
155 scr->position_x -= scr->position_x % 8;
156 break;
157 case '\b':
158 if (scr->position_x == 0)
159 break;
160 scr->position_x--;
161 if (console == active_console)
162 prtchr(' ', scr->position_y, scr->position_x);
163 screenbuffer_putchar(scr, ' ');
164 break;
165 default:
166 if (console == active_console)
167 prtchr(key, scr->position_y, scr->position_x);
168
169 screenbuffer_putchar(scr, key);
170 scr->position_x++;
171 }
172
173 scr->position_y += (scr->position_x >= scr->size_x);
174
175 if (scr->position_y >= scr->size_y) {
176 scr->position_y = scr->size_y - 1;
177 screenbuffer_clear_line(scr, scr->top_line);
178 scr->top_line = (scr->top_line + 1) % scr->size_y;
179 if (console == active_console)
180 async_msg(fb_info.phone, FB_SCROLL, 1);
181 }
182
183 scr->position_x = scr->position_x % scr->size_x;
184
185 if (console == active_console)
186 curs_goto(scr->position_y, scr->position_x);
187
188}
189
190/** Save current screen to pixmap, draw old pixmap
191 *
192 * @param oldpixmap Old pixmap
193 * @return ID of pixmap of current screen
194 */
195static int switch_screens(int oldpixmap)
196{
197 int newpmap;
198
199 /* Save screen */
200 newpmap = async_req(fb_info.phone, FB_VP2PIXMAP, 0, NULL);
201 if (newpmap < 0)
202 return -1;
203
204 if (oldpixmap != -1) {
205 /* Show old screen */
206 async_msg_2(fb_info.phone, FB_VP_DRAW_PIXMAP, 0, oldpixmap);
207 /* Drop old pixmap */
208 async_msg(fb_info.phone, FB_DROP_PIXMAP, oldpixmap);
209 }
210
211 return newpmap;
212}
213
214/** Switch to new console */
215static void change_console(int newcons)
216{
217 connection_t *conn;
218 static int console_pixmap = -1;
219 int i, j, rc;
220 keyfield_t *field;
221 style_t *style;
222
223 if (newcons == active_console)
224 return;
225
226 if (newcons == KERNEL_CONSOLE) {
227 if (active_console == KERNEL_CONSOLE)
228 return;
229 active_console = KERNEL_CONSOLE;
230 curs_visibility(0);
231
232 async_serialize_start();
233 if (kernel_pixmap == -1) {
234 /* store/restore unsupported */
235 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
236 clrscr();
237 } else {
238 gcons_in_kernel();
239 console_pixmap = switch_screens(kernel_pixmap);
240 kernel_pixmap = -1;
241 }
242 async_serialize_end();
243
244 __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
245 return;
246 }
247
248 async_serialize_start();
249
250 if (console_pixmap != -1) {
251 kernel_pixmap = switch_screens(console_pixmap);
252 console_pixmap = -1;
253 }
254 active_console = newcons;
255 gcons_change_console(newcons);
256 conn = &connections[active_console];
257
258 set_style(&conn->screenbuffer.style);
259 curs_visibility(0);
260 if (interbuffer) {
261 for (i = 0; i < conn->screenbuffer.size_x; i++)
262 for (j = 0; j < conn->screenbuffer.size_y; j++) {
263 unsigned int size_x;
264
265 size_x = conn->screenbuffer.size_x;
266 interbuffer[i + j * size_x] =
267 *get_field_at(&conn->screenbuffer, i, j);
268 }
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,
445 arg2);
446 if (consnum == active_console)
447 set_style_col(arg1, arg2);
448 break;
449 case CONSOLE_CURSOR_VISIBILITY:
450 arg1 = IPC_GET_ARG1(call);
451 conn->screenbuffer.is_cursor_visible = arg1;
452 if (consnum == active_console)
453 curs_visibility(arg1);
454 break;
455 case CONSOLE_GETCHAR:
456 if (keybuffer_empty(&conn->keybuffer)) {
457 /* buffer is empty -> store request */
458 if (conn->keyrequest_counter <
459 MAX_KEYREQUESTS_BUFFERED) {
460 fifo_push(conn->keyrequests, callid);
461 conn->keyrequest_counter++;
462 } else {
463 /*
464 * No key available and too many
465 * requests => fail.
466 */
467 ipc_answer_fast(callid, ELIMIT, 0, 0);
468 }
469 continue;
470 }
471 keybuffer_pop(&conn->keybuffer, (int *) &arg1);
472 break;
473 }
474 ipc_answer_fast(callid, 0, arg1, arg2);
475 }
476}
477
478int main(int argc, char *argv[])
479{
480 ipcarg_t phonehash;
481 int kbd_phone;
482 int i;
483
484 async_set_client_connection(client_connection);
485
486 /* Connect to keyboard driver */
487
488 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0);
489 while (kbd_phone < 0) {
490 usleep(10000);
491 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0);
492 }
493
494 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0)
495 return -1;
496 async_new_connection(phonehash, 0, NULL, keyboard_events);
497
498 /* Connect to framebuffer driver */
499
500 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0);
501 while (fb_info.phone < 0) {
502 usleep(10000);
503 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0);
504 }
505
506 /* Save old kernel screen */
507 kernel_pixmap = switch_screens(-1);
508
509 /* Initialize gcons */
510 gcons_init(fb_info.phone);
511 /* Synchronize, the gcons can have something in queue */
512 async_req(fb_info.phone, FB_FLUSH, 0, NULL);
513 /* Enable double buffering */
514 async_msg_2(fb_info.phone, FB_VIEWPORT_DB, (sysarg_t) -1, 1);
515
516 async_req_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &fb_info.rows,
517 &fb_info.cols);
518 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
519 clrscr();
520
521 /* Init virtual consoles */
522 for (i = 0; i < CONSOLE_COUNT; i++) {
523 connections[i].used = 0;
524 keybuffer_init(&connections[i].keybuffer);
525
526 connections[i].keyrequests.head = 0;
527 connections[i].keyrequests.tail = 0;
528 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
529 connections[i].keyrequest_counter = 0;
530
531 if (screenbuffer_init(&connections[i].screenbuffer,
532 fb_info.cols, fb_info.rows) == NULL) {
533 /* FIXME: handle error */
534 return -1;
535 }
536 }
537 connections[KERNEL_CONSOLE].used = 1;
538
539 interbuffer = mmap(NULL,
540 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
541 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
542 if (!interbuffer) {
543 if (async_req_3(fb_info.phone, IPC_M_AS_AREA_SEND,
544 (ipcarg_t) interbuffer, 0, AS_AREA_READ, NULL, NULL,
545 NULL) != 0) {
546 munmap(interbuffer,
547 sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
548 interbuffer = NULL;
549 }
550 }
551
552 curs_goto(0, 0);
553 curs_visibility(
554 connections[active_console].screenbuffer.is_cursor_visible);
555
556 /* Register at NS */
557 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
558 return -1;
559 }
560
561 async_manager();
562
563 return 0;
564}
565
566/** @}
567 */
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