source: mainline/uspace/srv/console/console.c@ 965dc18

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 965dc18 was 965dc18, checked in by Jakub Jermar <jakub@…>, 17 years ago

Merge sparc branch to trunk.
  • 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 retval = 0;
331 c = IPC_GET_ARG1(call);
332 /* switch to another virtual console */
333
334 conn = &connections[active_console];
335/*
336 * if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 +
337 * CONSOLE_COUNT)) {
338 */
339 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
340 if (c == 0x112)
341 change_console(KERNEL_CONSOLE);
342 else
343 change_console(c - 0x101);
344 break;
345 }
346
347 /* if client is awaiting key, send it */
348 if (conn->keyrequest_counter > 0) {
349 conn->keyrequest_counter--;
350 ipc_answer_1(fifo_pop(conn->keyrequests), EOK,
351 c);
352 break;
353 }
354
355 keybuffer_push(&conn->keybuffer, c);
356 retval = 0;
357
358 break;
359 default:
360 retval = ENOENT;
361 }
362 ipc_answer_0(callid, retval);
363 }
364}
365
366/** Default thread for new connections */
367static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
368{
369 ipc_callid_t callid;
370 ipc_call_t call;
371 int consnum;
372 ipcarg_t arg1, arg2;
373 connection_t *conn;
374
375 if ((consnum = find_free_connection()) == -1) {
376 ipc_answer_0(iid, ELIMIT);
377 return;
378 }
379 conn = &connections[consnum];
380 conn->used = 1;
381
382 async_serialize_start();
383 gcons_notify_connect(consnum);
384 conn->client_phone = IPC_GET_ARG5(*icall);
385 screenbuffer_clear(&conn->screenbuffer);
386
387 /* Accept the connection */
388 ipc_answer_0(iid, EOK);
389
390 while (1) {
391 async_serialize_end();
392 callid = async_get_call(&call);
393 async_serialize_start();
394
395 arg1 = 0;
396 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_0(fifo_pop(conn->keyrequests),
405 ENOENT);
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_0(fb_info.phone, FB_CLEAR);
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_0_0(fb_info.phone, FB_FLUSH);
437 break;
438 case CONSOLE_SET_STYLE:
439 arg1 = IPC_GET_ARG1(call);
440 arg2 = IPC_GET_ARG2(call);
441 screenbuffer_set_style(&conn->screenbuffer, arg1,
442 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_0(callid, ELIMIT);
465 }
466 continue;
467 }
468 int ch;
469 keybuffer_pop(&conn->keybuffer, &ch);
470 arg1 = ch;
471 break;
472 }
473 ipc_answer_2(callid, EOK, arg1, arg2);
474 }
475}
476
477int main(int argc, char *argv[])
478{
479 printf(NAME ": HelenOS Console service\n");
480
481 ipcarg_t phonehash;
482 int kbd_phone;
483 int i;
484
485 async_set_client_connection(client_connection);
486
487 /* Connect to keyboard driver */
488
489 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
490 while (kbd_phone < 0) {
491 usleep(10000);
492 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
493 }
494
495 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
496 return -1;
497 async_new_connection(phonehash, 0, NULL, keyboard_events);
498
499 /* Connect to framebuffer driver */
500
501 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
502 while (fb_info.phone < 0) {
503 usleep(10000);
504 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
505 }
506
507 /* Save old kernel screen */
508 kernel_pixmap = switch_screens(-1);
509
510 /* Initialize gcons */
511 gcons_init(fb_info.phone);
512 /* Synchronize, the gcons can have something in queue */
513 async_req_0_0(fb_info.phone, FB_FLUSH);
514 /* Enable double buffering */
515 async_msg_2(fb_info.phone, FB_VIEWPORT_DB, (sysarg_t) -1, 1);
516
517 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
518 &fb_info.cols);
519 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
520 clrscr();
521
522 /* Init virtual consoles */
523 for (i = 0; i < CONSOLE_COUNT; i++) {
524 connections[i].used = 0;
525 keybuffer_init(&connections[i].keybuffer);
526
527 connections[i].keyrequests.head = 0;
528 connections[i].keyrequests.tail = 0;
529 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
530 connections[i].keyrequest_counter = 0;
531
532 if (screenbuffer_init(&connections[i].screenbuffer,
533 fb_info.cols, fb_info.rows) == NULL) {
534 /* FIXME: handle error */
535 return -1;
536 }
537 }
538 connections[KERNEL_CONSOLE].used = 1;
539
540 interbuffer = mmap(NULL,
541 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
542 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
543 if (!interbuffer) {
544 if (ipc_share_out_start(fb_info.phone, interbuffer,
545 AS_AREA_READ) != EOK) {
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, 0, &phonehash) != 0)
558 return -1;
559
560 // FIXME: avoid connectiong to itself, keep using klog
561 // printf(NAME ": Accepting connections\n");
562 async_manager();
563
564 return 0;
565}
566
567/** @}
568 */
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