source: mainline/uspace/srv/console/console.c@ 76fca31

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 76fca31 was 76fca31, checked in by Martin Decky <martin@…>, 17 years ago

kconsole is optional
kernel & uspace framebuffer rewrite with speedups (some things are slightly broken yet)
  • Property mode set to 100644
File size: 12.9 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
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(int v)
110{
111 async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, v);
112}
113
114static void curs_goto(int row, int col)
115{
116 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
117}
118
119static void set_style(style_t *style)
120{
121 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color,
122 style->bg_color);
123}
124
125static void set_style_col(int fgcolor, int bgcolor)
126{
127 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
128}
129
130static void prtchr(char c, int row, int col)
131{
132 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
133}
134
135/** Check key and process special keys.
136 *
137 *
138 */
139static void write_char(int console, char key)
140{
141 screenbuffer_t *scr = &(connections[console].screenbuffer);
142
143 switch (key) {
144 case '\n':
145 scr->position_y++;
146 scr->position_x = 0;
147 break;
148 case '\r':
149 break;
150 case '\t':
151 scr->position_x += 8;
152 scr->position_x -= scr->position_x % 8;
153 break;
154 case '\b':
155 if (scr->position_x == 0)
156 break;
157 scr->position_x--;
158 if (console == active_console)
159 prtchr(' ', scr->position_y, scr->position_x);
160 screenbuffer_putchar(scr, ' ');
161 break;
162 default:
163 if (console == active_console)
164 prtchr(key, scr->position_y, scr->position_x);
165
166 screenbuffer_putchar(scr, key);
167 scr->position_x++;
168 }
169
170 scr->position_y += (scr->position_x >= scr->size_x);
171
172 if (scr->position_y >= scr->size_y) {
173 scr->position_y = scr->size_y - 1;
174 screenbuffer_clear_line(scr, scr->top_line);
175 scr->top_line = (scr->top_line + 1) % scr->size_y;
176 if (console == active_console)
177 async_msg_1(fb_info.phone, FB_SCROLL, 1);
178 }
179
180 scr->position_x = scr->position_x % scr->size_x;
181
182 if (console == active_console)
183 curs_goto(scr->position_y, scr->position_x);
184
185}
186
187/** Switch to new console */
188static void change_console(int newcons)
189{
190 connection_t *conn;
191 int i, j, rc;
192 keyfield_t *field;
193 style_t *style;
194
195 if (newcons == active_console)
196 return;
197
198 if (newcons == KERNEL_CONSOLE) {
199 async_serialize_start();
200 curs_visibility(0);
201 gcons_in_kernel();
202 async_serialize_end();
203
204 if (__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE))
205 active_console = KERNEL_CONSOLE;
206 else
207 newcons == active_console;
208 }
209
210 if (newcons != KERNEL_CONSOLE) {
211 async_serialize_start();
212
213 if (active_console == KERNEL_CONSOLE)
214 gcons_redraw_console();
215
216 active_console = newcons;
217 gcons_change_console(newcons);
218 conn = &connections[active_console];
219
220 set_style(&conn->screenbuffer.style);
221 curs_visibility(0);
222 if (interbuffer) {
223 for (i = 0; i < conn->screenbuffer.size_x; i++)
224 for (j = 0; j < conn->screenbuffer.size_y; j++) {
225 unsigned int size_x;
226
227 size_x = conn->screenbuffer.size_x;
228 interbuffer[i + j * size_x] =
229 *get_field_at(&conn->screenbuffer, i, j);
230 }
231 /* This call can preempt, but we are already at the end */
232 rc = async_req_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
233 }
234
235 if ((!interbuffer) || (rc != 0)) {
236 set_style(&conn->screenbuffer.style);
237 clrscr();
238 style = &conn->screenbuffer.style;
239
240 for (j = 0; j < conn->screenbuffer.size_y; j++)
241 for (i = 0; i < conn->screenbuffer.size_x; i++) {
242 field = get_field_at(&conn->screenbuffer, i, j);
243 if (!style_same(*style, field->style))
244 set_style(&field->style);
245 style = &field->style;
246 if ((field->character == ' ') &&
247 (style_same(field->style,
248 conn->screenbuffer.style)))
249 continue;
250
251 prtchr(field->character, j, i);
252 }
253 }
254
255 curs_goto(conn->screenbuffer.position_y,
256 conn->screenbuffer.position_x);
257 curs_visibility(conn->screenbuffer.is_cursor_visible);
258
259 async_serialize_end();
260 }
261}
262
263/** Handler for keyboard */
264static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
265{
266 ipc_callid_t callid;
267 ipc_call_t call;
268 int retval;
269 int c;
270 connection_t *conn;
271 int newcon;
272
273 /* Ignore parameters, the connection is alread opened */
274 while (1) {
275 callid = async_get_call(&call);
276 switch (IPC_GET_METHOD(call)) {
277 case IPC_M_PHONE_HUNGUP:
278 /* TODO: Handle hangup */
279 return;
280 case KBD_MS_LEFT:
281 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
282 if (newcon != -1)
283 change_console(newcon);
284 retval = 0;
285 break;
286 case KBD_MS_MOVE:
287 gcons_mouse_move(IPC_GET_ARG1(call),
288 IPC_GET_ARG2(call));
289 retval = 0;
290 break;
291 case KBD_PUSHCHAR:
292 /* got key from keyboard driver */
293 retval = 0;
294 c = IPC_GET_ARG1(call);
295 /* switch to another virtual console */
296
297 conn = &connections[active_console];
298/*
299 * if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 +
300 * CONSOLE_COUNT)) {
301 */
302 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
303 if (c == 0x112)
304 change_console(KERNEL_CONSOLE);
305 else
306 change_console(c - 0x101);
307 break;
308 }
309
310 /* if client is awaiting key, send it */
311 if (conn->keyrequest_counter > 0) {
312 conn->keyrequest_counter--;
313 ipc_answer_1(fifo_pop(conn->keyrequests), EOK,
314 c);
315 break;
316 }
317
318 keybuffer_push(&conn->keybuffer, c);
319 retval = 0;
320
321 break;
322 default:
323 retval = ENOENT;
324 }
325 ipc_answer_0(callid, retval);
326 }
327}
328
329/** Default thread for new connections */
330static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
331{
332 ipc_callid_t callid;
333 ipc_call_t call;
334 int consnum;
335 ipcarg_t arg1, arg2;
336 connection_t *conn;
337
338 if ((consnum = find_free_connection()) == -1) {
339 ipc_answer_0(iid, ELIMIT);
340 return;
341 }
342 conn = &connections[consnum];
343 conn->used = 1;
344
345 async_serialize_start();
346 gcons_notify_connect(consnum);
347 conn->client_phone = IPC_GET_ARG5(*icall);
348 screenbuffer_clear(&conn->screenbuffer);
349
350 /* Accept the connection */
351 ipc_answer_0(iid, EOK);
352
353 while (1) {
354 async_serialize_end();
355 callid = async_get_call(&call);
356 async_serialize_start();
357
358 arg1 = 0;
359 arg2 = 0;
360 switch (IPC_GET_METHOD(call)) {
361 case IPC_M_PHONE_HUNGUP:
362 gcons_notify_disconnect(consnum);
363
364 /* Answer all pending requests */
365 while (conn->keyrequest_counter > 0) {
366 conn->keyrequest_counter--;
367 ipc_answer_0(fifo_pop(conn->keyrequests),
368 ENOENT);
369 break;
370 }
371 conn->used = 0;
372 return;
373 case CONSOLE_PUTCHAR:
374 write_char(consnum, IPC_GET_ARG1(call));
375 gcons_notify_char(consnum);
376 break;
377 case CONSOLE_CLEAR:
378 /* Send message to fb */
379 if (consnum == active_console) {
380 async_msg_0(fb_info.phone, FB_CLEAR);
381 }
382
383 screenbuffer_clear(&conn->screenbuffer);
384
385 break;
386 case CONSOLE_GOTO:
387 screenbuffer_goto(&conn->screenbuffer,
388 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
389 if (consnum == active_console)
390 curs_goto(IPC_GET_ARG1(call),
391 IPC_GET_ARG2(call));
392 break;
393 case CONSOLE_GETSIZE:
394 arg1 = fb_info.rows;
395 arg2 = fb_info.cols;
396 break;
397 case CONSOLE_FLUSH:
398 if (consnum == active_console)
399 async_req_0_0(fb_info.phone, FB_FLUSH);
400 break;
401 case CONSOLE_SET_STYLE:
402 arg1 = IPC_GET_ARG1(call);
403 arg2 = IPC_GET_ARG2(call);
404 screenbuffer_set_style(&conn->screenbuffer, arg1,
405 arg2);
406 if (consnum == active_console)
407 set_style_col(arg1, arg2);
408 break;
409 case CONSOLE_CURSOR_VISIBILITY:
410 arg1 = IPC_GET_ARG1(call);
411 conn->screenbuffer.is_cursor_visible = arg1;
412 if (consnum == active_console)
413 curs_visibility(arg1);
414 break;
415 case CONSOLE_GETCHAR:
416 if (keybuffer_empty(&conn->keybuffer)) {
417 /* buffer is empty -> store request */
418 if (conn->keyrequest_counter <
419 MAX_KEYREQUESTS_BUFFERED) {
420 fifo_push(conn->keyrequests, callid);
421 conn->keyrequest_counter++;
422 } else {
423 /*
424 * No key available and too many
425 * requests => fail.
426 */
427 ipc_answer_0(callid, ELIMIT);
428 }
429 continue;
430 }
431 int ch;
432 keybuffer_pop(&conn->keybuffer, &ch);
433 arg1 = ch;
434 break;
435 }
436 ipc_answer_2(callid, EOK, arg1, arg2);
437 }
438}
439
440int main(int argc, char *argv[])
441{
442 printf(NAME ": HelenOS Console service\n");
443
444 ipcarg_t phonehash;
445 int kbd_phone;
446 int i;
447
448 async_set_client_connection(client_connection);
449
450 /* Connect to keyboard driver */
451
452 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
453 while (kbd_phone < 0) {
454 usleep(10000);
455 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
456 }
457
458 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
459 return -1;
460 async_new_connection(phonehash, 0, NULL, keyboard_events);
461
462 /* Connect to framebuffer driver */
463 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
464 while (fb_info.phone < 0) {
465 usleep(10000);
466 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
467 }
468
469 /* Initialize gcons */
470 gcons_init(fb_info.phone);
471 /* Synchronize, the gcons can have something in queue */
472 async_req_0_0(fb_info.phone, FB_FLUSH);
473
474 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
475 &fb_info.cols);
476 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
477 clrscr();
478
479 /* Init virtual consoles */
480 for (i = 0; i < CONSOLE_COUNT; i++) {
481 connections[i].used = 0;
482 keybuffer_init(&connections[i].keybuffer);
483
484 connections[i].keyrequests.head = 0;
485 connections[i].keyrequests.tail = 0;
486 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
487 connections[i].keyrequest_counter = 0;
488
489 if (screenbuffer_init(&connections[i].screenbuffer,
490 fb_info.cols, fb_info.rows) == NULL) {
491 /* FIXME: handle error */
492 return -1;
493 }
494 }
495 connections[KERNEL_CONSOLE].used = 1;
496
497 interbuffer = mmap(NULL,
498 sizeof(keyfield_t) * fb_info.cols * fb_info.rows,
499 PROTO_READ | PROTO_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
500 if (!interbuffer) {
501 if (ipc_share_out_start(fb_info.phone, interbuffer,
502 AS_AREA_READ) != EOK) {
503 munmap(interbuffer,
504 sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
505 interbuffer = NULL;
506 }
507 }
508
509 curs_goto(0, 0);
510 curs_visibility(
511 connections[active_console].screenbuffer.is_cursor_visible);
512
513 /* Register at NS */
514 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
515 return -1;
516
517 // FIXME: avoid connectiong to itself, keep using klog
518 // printf(NAME ": Accepting connections\n");
519 async_manager();
520
521 return 0;
522}
523
524/** @}
525 */
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