source: mainline/uspace/srv/console/console.c@ 1378b2b

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 1378b2b was 18c485a, checked in by Jakub Jermar <jakub@…>, 17 years ago

Do not typecast (sysarg_t *) to (int *). Especially on big endian 64-bit
machines, this does not have the intended effect.
  • 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#include <libc.h>
36#include <fb.h>
37#include <ipc/ipc.h>
38#include <keys.h>
39#include <ipc/fb.h>
40#include <ipc/services.h>
41#include <errno.h>
42#include <key_buffer.h>
43#include <console.h>
44#include <unistd.h>
45#include <async.h>
46#include <libadt/fifo.h>
47#include <screenbuffer.h>
48#include <sys/mman.h>
49#include <stdio.h>
50
51#include "gcons.h"
52
53#define MAX_KEYREQUESTS_BUFFERED 32
54
55#define NAME "console"
56
57/** Index of currently used virtual console.
58 */
59int active_console = 0;
60
61/** Information about framebuffer
62 */
63struct {
64 int phone; /**< Framebuffer phone */
65 ipcarg_t rows; /**< Framebuffer rows */
66 ipcarg_t cols; /**< Framebuffer columns */
67} fb_info;
68
69typedef struct {
70 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
71 /** Buffer for unsatisfied request for keys. */
72 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t,
73 MAX_KEYREQUESTS_BUFFERED);
74 int keyrequest_counter; /**< Number of requests in buffer. */
75 int client_phone; /**< Phone to connected client. */
76 int used; /**< 1 if this virtual console is
77 * connected to some client.*/
78 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen
79 * contents and related settings. */
80} connection_t;
81
82static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual
83 * consoles */
84static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared
85 * with framebufer used for
86 * faster virtual console
87 * switching */
88
89static int kernel_pixmap = -1; /**< Number of fb pixmap, where kernel
90 * console is stored */
91
92
93/** Find unused virtual console.
94 *
95 */
96static int find_free_connection(void)
97{
98 int i;
99
100 for (i = 0; i < CONSOLE_COUNT; i++) {
101 if (!connections[i].used)
102 return i;
103 }
104 return -1;
105}
106
107static void clrscr(void)
108{
109 async_msg_0(fb_info.phone, FB_CLEAR);
110}
111
112static void curs_visibility(int v)
113{
114 async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, v);
115}
116
117static void curs_goto(int row, int col)
118{
119 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
120}
121
122static void set_style(style_t *style)
123{
124 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color,
125 style->bg_color);
126}
127
128static void set_style_col(int fgcolor, int bgcolor)
129{
130 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
131}
132
133static void prtchr(char c, int row, int col)
134{
135 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
136}
137
138/** Check key and process special keys.
139 *
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_1(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_0_0(fb_info.phone, FB_VP2PIXMAP);
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_1(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_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
271 }
272
273 if ((!interbuffer) || (rc != 0)) {
274 set_style(&conn->screenbuffer.style);
275 clrscr();
276 style = &conn->screenbuffer.style;
277
278 for (j = 0; j < conn->screenbuffer.size_y; j++)
279 for (i = 0; i < conn->screenbuffer.size_x; i++) {
280 field = get_field_at(&conn->screenbuffer, i, 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_1(fifo_pop(conn->keyrequests), EOK,
352 c);
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_0(callid, retval);
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_0(iid, ELIMIT);
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_ARG5(*icall);
386 screenbuffer_clear(&conn->screenbuffer);
387
388 /* Accept the connection */
389 ipc_answer_0(iid, EOK);
390
391 while (1) {
392 async_serialize_end();
393 callid = async_get_call(&call);
394 async_serialize_start();
395
396 arg1 = 0;
397 arg2 = 0;
398 switch (IPC_GET_METHOD(call)) {
399 case IPC_M_PHONE_HUNGUP:
400 gcons_notify_disconnect(consnum);
401
402 /* Answer all pending requests */
403 while (conn->keyrequest_counter > 0) {
404 conn->keyrequest_counter--;
405 ipc_answer_0(fifo_pop(conn->keyrequests),
406 ENOENT);
407 break;
408 }
409 conn->used = 0;
410 return;
411 case CONSOLE_PUTCHAR:
412 write_char(consnum, IPC_GET_ARG1(call));
413 gcons_notify_char(consnum);
414 break;
415 case CONSOLE_CLEAR:
416 /* Send message to fb */
417 if (consnum == active_console) {
418 async_msg_0(fb_info.phone, FB_CLEAR);
419 }
420
421 screenbuffer_clear(&conn->screenbuffer);
422
423 break;
424 case CONSOLE_GOTO:
425 screenbuffer_goto(&conn->screenbuffer,
426 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
427 if (consnum == active_console)
428 curs_goto(IPC_GET_ARG1(call),
429 IPC_GET_ARG2(call));
430 break;
431 case CONSOLE_GETSIZE:
432 arg1 = fb_info.rows;
433 arg2 = fb_info.cols;
434 break;
435 case CONSOLE_FLUSH:
436 if (consnum == active_console)
437 async_req_0_0(fb_info.phone, FB_FLUSH);
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,
443 arg2);
444 if (consnum == active_console)
445 set_style_col(arg1, arg2);
446 break;
447 case CONSOLE_CURSOR_VISIBILITY:
448 arg1 = IPC_GET_ARG1(call);
449 conn->screenbuffer.is_cursor_visible = arg1;
450 if (consnum == active_console)
451 curs_visibility(arg1);
452 break;
453 case CONSOLE_GETCHAR:
454 if (keybuffer_empty(&conn->keybuffer)) {
455 /* buffer is empty -> store request */
456 if (conn->keyrequest_counter <
457 MAX_KEYREQUESTS_BUFFERED) {
458 fifo_push(conn->keyrequests, callid);
459 conn->keyrequest_counter++;
460 } else {
461 /*
462 * No key available and too many
463 * requests => fail.
464 */
465 ipc_answer_0(callid, ELIMIT);
466 }
467 continue;
468 }
469 int ch;
470 keybuffer_pop(&conn->keybuffer, &ch);
471 arg1 = ch;
472 break;
473 }
474 ipc_answer_2(callid, EOK, arg1, arg2);
475 }
476}
477
478int main(int argc, char *argv[])
479{
480 printf(NAME ": HelenOS Console service\n");
481
482 ipcarg_t phonehash;
483 int kbd_phone;
484 int i;
485
486 async_set_client_connection(client_connection);
487
488 /* Connect to keyboard driver */
489
490 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
491 while (kbd_phone < 0) {
492 usleep(10000);
493 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
494 }
495
496 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
497 return -1;
498 async_new_connection(phonehash, 0, NULL, keyboard_events);
499
500 /* Connect to framebuffer driver */
501
502 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
503 while (fb_info.phone < 0) {
504 usleep(10000);
505 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
506 }
507
508 /* Save old kernel screen */
509 kernel_pixmap = switch_screens(-1);
510
511 /* Initialize gcons */
512 gcons_init(fb_info.phone);
513 /* Synchronize, the gcons can have something in queue */
514 async_req_0_0(fb_info.phone, FB_FLUSH);
515 /* Enable double buffering */
516 async_msg_2(fb_info.phone, FB_VIEWPORT_DB, (sysarg_t) -1, 1);
517
518 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
519 &fb_info.cols);
520 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
521 clrscr();
522
523 /* Init virtual consoles */
524 for (i = 0; i < CONSOLE_COUNT; i++) {
525 connections[i].used = 0;
526 keybuffer_init(&connections[i].keybuffer);
527
528 connections[i].keyrequests.head = 0;
529 connections[i].keyrequests.tail = 0;
530 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
531 connections[i].keyrequest_counter = 0;
532
533 if (screenbuffer_init(&connections[i].screenbuffer,
534 fb_info.cols, fb_info.rows) == NULL) {
535 /* FIXME: handle error */
536 return -1;
537 }
538 }
539 connections[KERNEL_CONSOLE].used = 1;
540
541 interbuffer = mmap(NULL,
542 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
543 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
544 if (!interbuffer) {
545 if (ipc_share_out_start(fb_info.phone, interbuffer,
546 AS_AREA_READ) != EOK) {
547 munmap(interbuffer,
548 sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
549 interbuffer = NULL;
550 }
551 }
552
553 curs_goto(0, 0);
554 curs_visibility(
555 connections[active_console].screenbuffer.is_cursor_visible);
556
557 /* Register at NS */
558 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
559 return -1;
560
561 // FIXME: avoid connectiong to itself, keep using klog
562 // printf(NAME ": Accepting connections\n");
563 async_manager();
564
565 return 0;
566}
567
568/** @}
569 */
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