source: mainline/console/console.c@ bd02038

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since bd02038 was bd02038, checked in by Ondrej Palkovsky <ondrap@…>, 19 years ago

Fb internal update.
  • Property mode set to 100644
File size: 13.2 KB
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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
40#include <kbd.h>
41#include <fb.h>
42#include <ipc/ipc.h>
43#include <ipc/fb.h>
44#include <ipc/services.h>
45#include <errno.h>
46#include <key_buffer.h>
47#include <console.h>
48#include <unistd.h>
49#include <async.h>
50#include <libadt/fifo.h>
51#include <screenbuffer.h>
52#include <sys/mman.h>
53
54#include "gcons.h"
55
56#define MAX_KEYREQUESTS_BUFFERED 32
57
58#define NAME "CONSOLE"
59
60/** Index of currently used virtual console.
61 */
62int active_console = 0;
63
64/** Information about framebuffer
65 */
66struct {
67 int phone; /**< Framebuffer phone */
68 ipcarg_t rows; /**< Framebuffer rows */
69 ipcarg_t cols; /**< Framebuffer columns */
70} fb_info;
71
72
73typedef struct {
74 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
75 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t , MAX_KEYREQUESTS_BUFFERED); /**< Buffer for unsatisfied request for keys. */
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 connected to some client.*/
79 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen contents and related settings. */
80} connection_t;
81
82static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual consoles */
83static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared with framebufer used for faster virt. console switching */
84
85static int kernel_pixmap = -1; /**< Number of fb pixmap, where kernel console is stored */
86
87
88/** Find unused virtual console.
89 *
90 */
91static int find_free_connection(void)
92{
93 int i = 0;
94
95 for (i=0; i < CONSOLE_COUNT; i++) {
96 if (!connections[i].used)
97 return i;
98 }
99 return -1;
100}
101
102static void clrscr(void)
103{
104 async_msg(fb_info.phone, FB_CLEAR, 0);
105}
106
107static void curs_visibility(int v)
108{
109 async_msg(fb_info.phone, FB_CURSOR_VISIBILITY, v);
110}
111
112static void curs_goto(int row, int col)
113{
114 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
115
116}
117
118static void set_style(style_t *style)
119{
120 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color, style->bg_color);
121}
122
123static void set_style_col(int fgcolor, int bgcolor)
124{
125 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
126}
127
128static void prtchr(char c, int row, int col)
129{
130 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
131
132}
133
134/** Check key and process special keys.
135 *
136 * */
137static void write_char(int console, char key)
138{
139 screenbuffer_t *scr = &(connections[console].screenbuffer);
140
141 switch (key) {
142 case '\n':
143 scr->position_y += 1;
144 scr->position_x = 0;
145 break;
146 case '\r':
147 break;
148 case '\t':
149 scr->position_x += 8;
150 scr->position_x -= scr->position_x % 8;
151 break;
152 case '\b':
153 if (scr->position_x == 0)
154 break;
155
156 scr->position_x--;
157
158 if (console == active_console)
159 prtchr(' ', scr->position_y, scr->position_x);
160
161 screenbuffer_putchar(scr, ' ');
162
163 break;
164 default:
165 if (console == active_console)
166 prtchr(key, scr->position_y, scr->position_x);
167
168 screenbuffer_putchar(scr, key);
169 scr->position_x++;
170 }
171
172 scr->position_y += (scr->position_x >= scr->size_x);
173
174 if (scr->position_y >= scr->size_y) {
175 scr->position_y = scr->size_y - 1;
176 screenbuffer_clear_line(scr, scr->top_line++);
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 char c;
221
222 if (newcons == active_console)
223 return;
224
225 if (newcons == KERNEL_CONSOLE) {
226 if (active_console == KERNEL_CONSOLE)
227 return;
228 active_console = KERNEL_CONSOLE;
229 curs_visibility(0);
230
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
241 __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
242 return;
243 }
244
245 if (console_pixmap != -1) {
246 kernel_pixmap = switch_screens(console_pixmap);
247 console_pixmap = -1;
248 }
249 active_console = newcons;
250 gcons_change_console(newcons);
251 conn = &connections[active_console];
252
253 set_style(&conn->screenbuffer.style);
254 curs_visibility(0);
255 if (interbuffer) {
256 for (i = 0; i < conn->screenbuffer.size_x; i++)
257 for (j = 0; j < conn->screenbuffer.size_y; j++)
258 interbuffer[i + j*conn->screenbuffer.size_x] = *get_field_at(&(conn->screenbuffer),i, j);
259 /* This call can preempt, but we are already at the end */
260 rc = async_req_2(fb_info.phone, FB_DRAW_TEXT_DATA, 0, 0, NULL, NULL);
261 };
262
263 if ((!interbuffer) || (j != 0)) {
264 set_style(&conn->screenbuffer.style);
265 clrscr();
266 style = &conn->screenbuffer.style;
267
268 for (j = 0; j < conn->screenbuffer.size_y; j++)
269 for (i = 0; i < conn->screenbuffer.size_x; i++) {
270 field = get_field_at(&(conn->screenbuffer),i, j);
271 if (!style_same(*style, field->style))
272 set_style(&field->style);
273 style = &field->style;
274 if ((field->character == ' ') && (style_same(field->style, conn->screenbuffer.style)))
275 continue;
276
277 prtchr(field->character, j, i);
278 }
279 }
280
281 curs_goto(conn->screenbuffer.position_y, conn->screenbuffer.position_x);
282 curs_visibility(conn->screenbuffer.is_cursor_visible);
283}
284
285/** Handler for keyboard */
286static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
287{
288 ipc_callid_t callid;
289 ipc_call_t call;
290 int retval;
291 int c;
292 connection_t *conn;
293
294 /* Ignore parameters, the connection is alread opened */
295 while (1) {
296 callid = async_get_call(&call);
297 switch (IPC_GET_METHOD(call)) {
298 case IPC_M_PHONE_HUNGUP:
299 /* TODO: Handle hangup */
300 return;
301 case KBD_PUSHCHAR:
302 /* got key from keyboard driver */
303
304 retval = 0;
305 c = IPC_GET_ARG1(call);
306 /* switch to another virtual console */
307
308 conn = &connections[active_console];
309// if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
310 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
311 async_serialize_start();
312 if (c == 0x112)
313 change_console(KERNEL_CONSOLE);
314 else
315 change_console(c - 0x101);
316 async_serialize_end();
317 break;
318 }
319
320 /* if client is awaiting key, send it */
321 if (conn->keyrequest_counter > 0) {
322 conn->keyrequest_counter--;
323 ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
324 break;
325 }
326
327 /*FIXME: else store key to its buffer */
328 keybuffer_push(&conn->keybuffer, c);
329
330 break;
331 default:
332 retval = ENOENT;
333 }
334 ipc_answer_fast(callid, retval, 0, 0);
335 }
336}
337
338/** Default thread for new connections */
339static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
340{
341 ipc_callid_t callid;
342 ipc_call_t call;
343 int consnum;
344 ipcarg_t arg1, arg2;
345 connection_t *conn;
346
347 if ((consnum = find_free_connection()) == -1) {
348 ipc_answer_fast(iid,ELIMIT,0,0);
349 return;
350 }
351 conn = &connections[consnum];
352 conn->used = 1;
353
354 async_serialize_start();
355 gcons_notify_connect(consnum);
356 conn->client_phone = IPC_GET_ARG3(call);
357 screenbuffer_clear(&conn->screenbuffer);
358
359 /* Accept the connection */
360 ipc_answer_fast(iid,0,0,0);
361
362 while (1) {
363 async_serialize_end();
364 callid = async_get_call(&call);
365 async_serialize_start();
366
367 arg1 = arg2 = 0;
368 switch (IPC_GET_METHOD(call)) {
369 case IPC_M_PHONE_HUNGUP:
370 gcons_notify_disconnect(consnum);
371
372 /* Answer all pending requests */
373 while (conn->keyrequest_counter > 0) {
374 conn->keyrequest_counter--;
375 ipc_answer_fast(fifo_pop(conn->keyrequests), ENOENT, 0, 0);
376 break;
377 }
378 conn->used = 0;
379 return;
380 case CONSOLE_PUTCHAR:
381 write_char(consnum, IPC_GET_ARG1(call));
382 gcons_notify_char(consnum);
383 break;
384 case CONSOLE_CLEAR:
385 /* Send message to fb */
386 if (consnum == active_console) {
387 async_msg(fb_info.phone, FB_CLEAR, 0);
388 }
389
390 screenbuffer_clear(&conn->screenbuffer);
391
392 break;
393 case CONSOLE_GOTO:
394
395 screenbuffer_goto(&conn->screenbuffer, IPC_GET_ARG2(call), IPC_GET_ARG1(call));
396 if (consnum == active_console)
397 curs_goto(IPC_GET_ARG1(call),IPC_GET_ARG2(call));
398
399 break;
400
401 case CONSOLE_GETSIZE:
402 arg1 = fb_info.rows;
403 arg2 = fb_info.cols;
404 break;
405 case CONSOLE_FLUSH:
406 async_req_2(fb_info.phone, FB_FLUSH, 0, 0, NULL, NULL);
407 break;
408 case CONSOLE_SET_STYLE:
409
410 arg1 = IPC_GET_ARG1(call);
411 arg2 = IPC_GET_ARG2(call);
412 screenbuffer_set_style(&conn->screenbuffer,arg1, arg2);
413 if (consnum == active_console)
414 set_style_col(arg1, arg2);
415
416 break;
417 case CONSOLE_CURSOR_VISIBILITY:
418 arg1 = IPC_GET_ARG1(call);
419 conn->screenbuffer.is_cursor_visible = arg1;
420 if (consnum == active_console)
421 curs_visibility(arg1);
422 break;
423 case CONSOLE_GETCHAR:
424 if (keybuffer_empty(&conn->keybuffer)) {
425 /* buffer is empty -> store request */
426 if (conn->keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {
427 fifo_push(conn->keyrequests, callid);
428 conn->keyrequest_counter++;
429 } else {
430 /* no key available and too many requests => fail */
431 ipc_answer_fast(callid, ELIMIT, 0, 0);
432 }
433 continue;
434 };
435 keybuffer_pop(&conn->keybuffer, (int *)&arg1);
436
437 break;
438 }
439 ipc_answer_fast(callid, 0, arg1, arg2);
440 }
441}
442
443int main(int argc, char *argv[])
444{
445 ipcarg_t phonehash;
446 int kbd_phone, fb_phone;
447 ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
448 int i;
449
450 async_set_client_connection(client_connection);
451
452 /* Connect to keyboard driver */
453
454 while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
455 usleep(10000);
456 };
457
458 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
459 return -1;
460 };
461
462 /* Connect to framebuffer driver */
463
464 while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
465 usleep(10000);
466 }
467
468 /* Save old kernel screen */
469 kernel_pixmap = switch_screens(-1);
470
471 /* Initialize gcons */
472 gcons_init(fb_info.phone);
473 /* Synchronize, the gcons can have something in queue */
474 async_req(fb_info.phone, FB_FLUSH, 0, NULL);
475 /* Enable double buffering */
476 async_msg_2(fb_info.phone, FB_VIEWPORT_DB, (sysarg_t)-1, 1);
477
478 async_req_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
479 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
480 clrscr();
481
482 /* Init virtual consoles */
483 for (i = 0; i < CONSOLE_COUNT; i++) {
484 connections[i].used = 0;
485 keybuffer_init(&(connections[i].keybuffer));
486
487 connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
488 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
489 connections[i].keyrequest_counter = 0;
490
491 if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
492 /*FIXME: handle error */
493 return -1;
494 }
495 }
496 connections[KERNEL_CONSOLE].used = 1;
497
498 if ((interbuffer = mmap(NULL, sizeof(keyfield_t) * fb_info.cols * fb_info.rows , PROTO_READ|PROTO_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, 0 ,0 )) != NULL) {
499 if (async_req_3(fb_info.phone, IPC_M_AS_AREA_SEND, (ipcarg_t)interbuffer, 0, AS_AREA_READ, NULL, NULL, NULL) != 0) {
500 munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
501 interbuffer = NULL;
502 }
503 }
504
505 async_new_connection(phonehash, 0, NULL, keyboard_events);
506
507 curs_goto(0,0);
508 curs_visibility(connections[active_console].screenbuffer.is_cursor_visible);
509
510 /* Register at NS */
511 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
512 return -1;
513 };
514
515 async_manager();
516
517 return 0;
518}
519
520/** @}
521 */
522
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