source: mainline/uspace/srv/console/console.c@ 8c6337d

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 8c6337d was 8c6337d, checked in by Martin Decky <martin@…>, 17 years ago

make sure the cursor is already off when switching to kernel console (use synchronous messaging)
  • Property mode set to 100644
File size: 13.0 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
89
90/** Find unused virtual console.
91 *
92 */
93static int find_free_connection(void)
94{
95 int i;
96
97 for (i = 0; i < CONSOLE_COUNT; i++) {
98 if (!connections[i].used)
99 return i;
100 }
101 return -1;
102}
103
104static void clrscr(void)
105{
106 async_msg_0(fb_info.phone, FB_CLEAR);
107}
108
109static void curs_visibility(bool visible)
110{
111 async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, visible);
112}
113
114static void curs_hide_sync(void)
115{
116 ipc_call_sync_1_0(fb_info.phone, FB_CURSOR_VISIBILITY, false);
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 *
143 */
144static void write_char(int console, char key)
145{
146 screenbuffer_t *scr = &(connections[console].screenbuffer);
147
148 switch (key) {
149 case '\n':
150 scr->position_y++;
151 scr->position_x = 0;
152 break;
153 case '\r':
154 break;
155 case '\t':
156 scr->position_x += 8;
157 scr->position_x -= scr->position_x % 8;
158 break;
159 case '\b':
160 if (scr->position_x == 0)
161 break;
162 scr->position_x--;
163 if (console == active_console)
164 prtchr(' ', scr->position_y, scr->position_x);
165 screenbuffer_putchar(scr, ' ');
166 break;
167 default:
168 if (console == active_console)
169 prtchr(key, scr->position_y, scr->position_x);
170
171 screenbuffer_putchar(scr, key);
172 scr->position_x++;
173 }
174
175 scr->position_y += (scr->position_x >= scr->size_x);
176
177 if (scr->position_y >= scr->size_y) {
178 scr->position_y = scr->size_y - 1;
179 screenbuffer_clear_line(scr, scr->top_line);
180 scr->top_line = (scr->top_line + 1) % scr->size_y;
181 if (console == active_console)
182 async_msg_1(fb_info.phone, FB_SCROLL, 1);
183 }
184
185 scr->position_x = scr->position_x % scr->size_x;
186
187 if (console == active_console)
188 curs_goto(scr->position_y, scr->position_x);
189
190}
191
192/** Switch to new console */
193static void change_console(int newcons)
194{
195 connection_t *conn;
196 int i, j, rc;
197 keyfield_t *field;
198 style_t *style;
199
200 if (newcons == active_console)
201 return;
202
203 if (newcons == KERNEL_CONSOLE) {
204 async_serialize_start();
205 curs_hide_sync();
206 gcons_in_kernel();
207 async_serialize_end();
208
209 if (__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE))
210 active_console = KERNEL_CONSOLE;
211 else
212 newcons = active_console;
213 }
214
215 if (newcons != KERNEL_CONSOLE) {
216 async_serialize_start();
217
218 if (active_console == KERNEL_CONSOLE)
219 gcons_redraw_console();
220
221 active_console = newcons;
222 gcons_change_console(newcons);
223 conn = &connections[active_console];
224
225 set_style(&conn->screenbuffer.style);
226 curs_visibility(false);
227 if (interbuffer) {
228 for (i = 0; i < conn->screenbuffer.size_x; i++)
229 for (j = 0; j < conn->screenbuffer.size_y; j++) {
230 unsigned int size_x;
231
232 size_x = conn->screenbuffer.size_x;
233 interbuffer[i + j * size_x] =
234 *get_field_at(&conn->screenbuffer, i, j);
235 }
236 /* This call can preempt, but we are already at the end */
237 rc = async_req_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
238 }
239
240 if ((!interbuffer) || (rc != 0)) {
241 set_style(&conn->screenbuffer.style);
242 clrscr();
243 style = &conn->screenbuffer.style;
244
245 for (j = 0; j < conn->screenbuffer.size_y; j++)
246 for (i = 0; i < conn->screenbuffer.size_x; i++) {
247 field = get_field_at(&conn->screenbuffer, i, j);
248 if (!style_same(*style, field->style))
249 set_style(&field->style);
250 style = &field->style;
251 if ((field->character == ' ') &&
252 (style_same(field->style,
253 conn->screenbuffer.style)))
254 continue;
255
256 prtchr(field->character, j, i);
257 }
258 }
259
260 curs_goto(conn->screenbuffer.position_y,
261 conn->screenbuffer.position_x);
262 curs_visibility(conn->screenbuffer.is_cursor_visible);
263
264 async_serialize_end();
265 }
266}
267
268/** Handler for keyboard */
269static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
270{
271 ipc_callid_t callid;
272 ipc_call_t call;
273 int retval;
274 int c;
275 connection_t *conn;
276 int newcon;
277
278 /* Ignore parameters, the connection is alread opened */
279 while (1) {
280 callid = async_get_call(&call);
281 switch (IPC_GET_METHOD(call)) {
282 case IPC_M_PHONE_HUNGUP:
283 /* TODO: Handle hangup */
284 return;
285 case KBD_MS_LEFT:
286 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
287 if (newcon != -1)
288 change_console(newcon);
289 retval = 0;
290 break;
291 case KBD_MS_MOVE:
292 gcons_mouse_move(IPC_GET_ARG1(call),
293 IPC_GET_ARG2(call));
294 retval = 0;
295 break;
296 case KBD_PUSHCHAR:
297 /* got key from keyboard driver */
298 retval = 0;
299 c = IPC_GET_ARG1(call);
300 /* switch to another virtual console */
301
302 conn = &connections[active_console];
303/*
304 * if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 +
305 * CONSOLE_COUNT)) {
306 */
307 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
308 if (c == 0x112)
309 change_console(KERNEL_CONSOLE);
310 else
311 change_console(c - 0x101);
312 break;
313 }
314
315 /* if client is awaiting key, send it */
316 if (conn->keyrequest_counter > 0) {
317 conn->keyrequest_counter--;
318 ipc_answer_1(fifo_pop(conn->keyrequests), EOK,
319 c);
320 break;
321 }
322
323 keybuffer_push(&conn->keybuffer, c);
324 retval = 0;
325
326 break;
327 default:
328 retval = ENOENT;
329 }
330 ipc_answer_0(callid, retval);
331 }
332}
333
334/** Default thread for new connections */
335static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
336{
337 ipc_callid_t callid;
338 ipc_call_t call;
339 int consnum;
340 ipcarg_t arg1, arg2;
341 connection_t *conn;
342
343 if ((consnum = find_free_connection()) == -1) {
344 ipc_answer_0(iid, ELIMIT);
345 return;
346 }
347 conn = &connections[consnum];
348 conn->used = 1;
349
350 async_serialize_start();
351 gcons_notify_connect(consnum);
352 conn->client_phone = IPC_GET_ARG5(*icall);
353 screenbuffer_clear(&conn->screenbuffer);
354
355 /* Accept the connection */
356 ipc_answer_0(iid, EOK);
357
358 while (1) {
359 async_serialize_end();
360 callid = async_get_call(&call);
361 async_serialize_start();
362
363 arg1 = 0;
364 arg2 = 0;
365 switch (IPC_GET_METHOD(call)) {
366 case IPC_M_PHONE_HUNGUP:
367 gcons_notify_disconnect(consnum);
368
369 /* Answer all pending requests */
370 while (conn->keyrequest_counter > 0) {
371 conn->keyrequest_counter--;
372 ipc_answer_0(fifo_pop(conn->keyrequests),
373 ENOENT);
374 break;
375 }
376 conn->used = 0;
377 return;
378 case CONSOLE_PUTCHAR:
379 write_char(consnum, IPC_GET_ARG1(call));
380 gcons_notify_char(consnum);
381 break;
382 case CONSOLE_CLEAR:
383 /* Send message to fb */
384 if (consnum == active_console) {
385 async_msg_0(fb_info.phone, FB_CLEAR);
386 }
387
388 screenbuffer_clear(&conn->screenbuffer);
389
390 break;
391 case CONSOLE_GOTO:
392 screenbuffer_goto(&conn->screenbuffer,
393 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
394 if (consnum == active_console)
395 curs_goto(IPC_GET_ARG1(call),
396 IPC_GET_ARG2(call));
397 break;
398 case CONSOLE_GETSIZE:
399 arg1 = fb_info.rows;
400 arg2 = fb_info.cols;
401 break;
402 case CONSOLE_FLUSH:
403 if (consnum == active_console)
404 async_req_0_0(fb_info.phone, FB_FLUSH);
405 break;
406 case CONSOLE_SET_STYLE:
407 arg1 = IPC_GET_ARG1(call);
408 arg2 = IPC_GET_ARG2(call);
409 screenbuffer_set_style(&conn->screenbuffer, arg1,
410 arg2);
411 if (consnum == active_console)
412 set_style_col(arg1, arg2);
413 break;
414 case CONSOLE_CURSOR_VISIBILITY:
415 arg1 = IPC_GET_ARG1(call);
416 conn->screenbuffer.is_cursor_visible = arg1;
417 if (consnum == active_console)
418 curs_visibility(arg1);
419 break;
420 case CONSOLE_GETCHAR:
421 if (keybuffer_empty(&conn->keybuffer)) {
422 /* buffer is empty -> store request */
423 if (conn->keyrequest_counter <
424 MAX_KEYREQUESTS_BUFFERED) {
425 fifo_push(conn->keyrequests, callid);
426 conn->keyrequest_counter++;
427 } else {
428 /*
429 * No key available and too many
430 * requests => fail.
431 */
432 ipc_answer_0(callid, ELIMIT);
433 }
434 continue;
435 }
436 int ch;
437 keybuffer_pop(&conn->keybuffer, &ch);
438 arg1 = ch;
439 break;
440 }
441 ipc_answer_2(callid, EOK, arg1, arg2);
442 }
443}
444
445int main(int argc, char *argv[])
446{
447 printf(NAME ": HelenOS Console service\n");
448
449 ipcarg_t phonehash;
450 int kbd_phone;
451 int i;
452
453 async_set_client_connection(client_connection);
454
455 /* Connect to keyboard driver */
456
457 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
458 while (kbd_phone < 0) {
459 usleep(10000);
460 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
461 }
462
463 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
464 return -1;
465 async_new_connection(phonehash, 0, NULL, keyboard_events);
466
467 /* Connect to framebuffer driver */
468 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
469 while (fb_info.phone < 0) {
470 usleep(10000);
471 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
472 }
473
474 /* Initialize gcons */
475 gcons_init(fb_info.phone);
476 /* Synchronize, the gcons can have something in queue */
477 async_req_0_0(fb_info.phone, FB_FLUSH);
478
479 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
480 &fb_info.cols);
481 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
482 clrscr();
483
484 /* Init virtual consoles */
485 for (i = 0; i < CONSOLE_COUNT; i++) {
486 connections[i].used = 0;
487 keybuffer_init(&connections[i].keybuffer);
488
489 connections[i].keyrequests.head = 0;
490 connections[i].keyrequests.tail = 0;
491 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
492 connections[i].keyrequest_counter = 0;
493
494 if (screenbuffer_init(&connections[i].screenbuffer,
495 fb_info.cols, fb_info.rows) == NULL) {
496 /* FIXME: handle error */
497 return -1;
498 }
499 }
500 connections[KERNEL_CONSOLE].used = 1;
501
502 interbuffer = mmap(NULL,
503 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
504 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
505 if (!interbuffer) {
506 if (ipc_share_out_start(fb_info.phone, interbuffer,
507 AS_AREA_READ) != EOK) {
508 munmap(interbuffer,
509 sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
510 interbuffer = NULL;
511 }
512 }
513
514 curs_goto(0, 0);
515 curs_visibility(
516 connections[active_console].screenbuffer.is_cursor_visible);
517
518 /* Register at NS */
519 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
520 return -1;
521
522 // FIXME: avoid connectiong to itself, keep using klog
523 // printf(NAME ": Accepting connections\n");
524 async_manager();
525
526 return 0;
527}
528
529/** @}
530 */
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