source: mainline/uspace/srv/console/console.c@ 96e0748d

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 96e0748d was fa09449, checked in by Jiri Svoboda <jirik.svoboda@…>, 16 years ago

Keycodes, keyboard events, kbd_event_get(). Keyboard driver now (formally) produces kbd events (press/release, keycode, mods, char) instead of just characters. In reality, the driver and client are only hacked to work with the new interface atm.
  • Property mode set to 100644
File size: 14.8 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 <ipc/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#include <sysinfo.h>
51
52#include "console.h"
53#include "gcons.h"
54
55#define MAX_KEYREQUESTS_BUFFERED 32
56
57#define NAME "console"
58
59/** Index of currently used virtual console.
60 */
61int active_console = 0;
62int prev_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
72typedef struct {
73 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
74 /** Buffer for unsatisfied request for keys. */
75 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t,
76 MAX_KEYREQUESTS_BUFFERED);
77 int keyrequest_counter; /**< Number of requests in buffer. */
78 int client_phone; /**< Phone to connected client. */
79 int used; /**< 1 if this virtual console is
80 * connected to some client.*/
81 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen
82 * contents and related settings. */
83} connection_t;
84
85static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual
86 * consoles */
87static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared
88 * with framebufer used for
89 * faster virtual console
90 * switching */
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(bool visible)
113{
114 async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, visible);
115}
116
117static void curs_hide_sync(void)
118{
119 ipc_call_sync_1_0(fb_info.phone, FB_CURSOR_VISIBILITY, false);
120}
121
122static void curs_goto(int row, int col)
123{
124 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
125}
126
127static void set_style(int style)
128{
129 async_msg_1(fb_info.phone, FB_SET_STYLE, style);
130}
131
132static void set_color(int fgcolor, int bgcolor, int flags)
133{
134 async_msg_3(fb_info.phone, FB_SET_COLOR, fgcolor, bgcolor, flags);
135}
136
137static void set_rgb_color(int fgcolor, int bgcolor)
138{
139 async_msg_2(fb_info.phone, FB_SET_RGB_COLOR, fgcolor, bgcolor);
140}
141
142static void set_attrs(attrs_t *attrs)
143{
144 switch (attrs->t) {
145 case at_style:
146 set_style(attrs->a.s.style);
147 break;
148
149 case at_idx:
150 set_color(attrs->a.i.fg_color, attrs->a.i.bg_color,
151 attrs->a.i.flags);
152 break;
153
154 case at_rgb:
155 set_rgb_color(attrs->a.r.fg_color, attrs->a.r.bg_color);
156 break;
157 }
158}
159
160static void prtchr(char c, int row, int col)
161{
162 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
163}
164
165/** Check key and process special keys.
166 *
167 *
168 */
169static void write_char(int console, char key)
170{
171 screenbuffer_t *scr = &(connections[console].screenbuffer);
172
173 switch (key) {
174 case '\n':
175 scr->position_y++;
176 scr->position_x = 0;
177 break;
178 case '\r':
179 break;
180 case '\t':
181 scr->position_x += 8;
182 scr->position_x -= scr->position_x % 8;
183 break;
184 case '\b':
185 if (scr->position_x == 0)
186 break;
187 scr->position_x--;
188 if (console == active_console)
189 prtchr(' ', scr->position_y, scr->position_x);
190 screenbuffer_putchar(scr, ' ');
191 break;
192 default:
193 if (console == active_console)
194 prtchr(key, scr->position_y, scr->position_x);
195
196 screenbuffer_putchar(scr, key);
197 scr->position_x++;
198 }
199
200 scr->position_y += (scr->position_x >= scr->size_x);
201
202 if (scr->position_y >= scr->size_y) {
203 scr->position_y = scr->size_y - 1;
204 screenbuffer_clear_line(scr, scr->top_line);
205 scr->top_line = (scr->top_line + 1) % scr->size_y;
206 if (console == active_console)
207 async_msg_1(fb_info.phone, FB_SCROLL, 1);
208 }
209
210 scr->position_x = scr->position_x % scr->size_x;
211
212 if (console == active_console)
213 curs_goto(scr->position_y, scr->position_x);
214
215}
216
217/** Switch to new console */
218static void change_console(int newcons)
219{
220 connection_t *conn;
221 int i, j, rc;
222 keyfield_t *field;
223 attrs_t *attrs;
224
225 if (newcons == active_console)
226 return;
227
228 if (newcons == KERNEL_CONSOLE) {
229 async_serialize_start();
230 curs_hide_sync();
231 gcons_in_kernel();
232 async_serialize_end();
233
234 if (__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE)) {
235 prev_console = active_console;
236 active_console = KERNEL_CONSOLE;
237 } else
238 newcons = active_console;
239 }
240
241 if (newcons != KERNEL_CONSOLE) {
242 async_serialize_start();
243
244 if (active_console == KERNEL_CONSOLE)
245 gcons_redraw_console();
246
247 active_console = newcons;
248 gcons_change_console(newcons);
249 conn = &connections[active_console];
250
251 set_attrs(&conn->screenbuffer.attrs);
252 curs_visibility(false);
253 if (interbuffer) {
254 for (i = 0; i < conn->screenbuffer.size_x; i++)
255 for (j = 0; j < conn->screenbuffer.size_y; j++) {
256 unsigned int size_x;
257
258 size_x = conn->screenbuffer.size_x;
259 interbuffer[i + j * size_x] =
260 *get_field_at(&conn->screenbuffer, i, j);
261 }
262 /* This call can preempt, but we are already at the end */
263 rc = async_req_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
264 }
265
266 if ((!interbuffer) || (rc != 0)) {
267 set_attrs(&conn->screenbuffer.attrs);
268 clrscr();
269 attrs = &conn->screenbuffer.attrs;
270
271 for (j = 0; j < conn->screenbuffer.size_y; j++)
272 for (i = 0; i < conn->screenbuffer.size_x; i++) {
273 field = get_field_at(&conn->screenbuffer, i, j);
274 if (!attrs_same(*attrs, field->attrs))
275 set_attrs(&field->attrs);
276 attrs = &field->attrs;
277 if ((field->character == ' ') &&
278 (attrs_same(field->attrs,
279 conn->screenbuffer.attrs)))
280 continue;
281
282 prtchr(field->character, j, i);
283 }
284 }
285
286 curs_goto(conn->screenbuffer.position_y,
287 conn->screenbuffer.position_x);
288 curs_visibility(conn->screenbuffer.is_cursor_visible);
289
290 async_serialize_end();
291 }
292}
293
294/** Handler for keyboard */
295static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
296{
297 ipc_callid_t callid;
298 ipc_call_t call;
299 int retval;
300 kbd_event_t ev;
301 connection_t *conn;
302 int newcon;
303
304 /* Ignore parameters, the connection is alread opened */
305 while (1) {
306 callid = async_get_call(&call);
307 switch (IPC_GET_METHOD(call)) {
308 case IPC_M_PHONE_HUNGUP:
309 /* TODO: Handle hangup */
310 return;
311 case KBD_MS_LEFT:
312 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
313 if (newcon != -1)
314 change_console(newcon);
315 retval = 0;
316 break;
317 case KBD_MS_MOVE:
318 gcons_mouse_move(IPC_GET_ARG1(call),
319 IPC_GET_ARG2(call));
320 retval = 0;
321 break;
322 case KBD_EVENT:
323 /* Got event from keyboard driver. */
324 retval = 0;
325 ev.type = IPC_GET_ARG1(call);
326 ev.key = IPC_GET_ARG2(call);
327 ev.mods = IPC_GET_ARG3(call);
328 ev.c = IPC_GET_ARG4(call);
329
330 /* switch to another virtual console */
331
332 conn = &connections[active_console];
333
334 if ((ev.key >= 0x101) && (ev.key < 0x101 +
335 CONSOLE_COUNT)) {
336 if (ev.key == 0x112)
337 change_console(KERNEL_CONSOLE);
338 else
339 change_console(ev.key - 0x101);
340 break;
341 }
342
343 /* if client is awaiting key, send it */
344 if (conn->keyrequest_counter > 0) {
345 conn->keyrequest_counter--;
346 ipc_answer_4(fifo_pop(conn->keyrequests), EOK,
347 ev.type, ev.key, ev.mods, ev.c);
348 break;
349 }
350
351 keybuffer_push(&conn->keybuffer, &ev);
352 retval = 0;
353
354 break;
355 default:
356 retval = ENOENT;
357 }
358 ipc_answer_0(callid, retval);
359 }
360}
361
362/** Default thread for new connections */
363static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
364{
365 ipc_callid_t callid;
366 ipc_call_t call;
367 int consnum;
368 ipcarg_t arg1, arg2, arg3, arg4;
369 connection_t *conn;
370
371 if ((consnum = find_free_connection()) == -1) {
372 ipc_answer_0(iid, ELIMIT);
373 return;
374 }
375 conn = &connections[consnum];
376 conn->used = 1;
377
378 async_serialize_start();
379 gcons_notify_connect(consnum);
380 conn->client_phone = IPC_GET_ARG5(*icall);
381 screenbuffer_clear(&conn->screenbuffer);
382
383 /* Accept the connection */
384 ipc_answer_0(iid, EOK);
385
386 while (1) {
387 async_serialize_end();
388 callid = async_get_call(&call);
389 async_serialize_start();
390
391 arg1 = 0;
392 arg2 = 0;
393 arg3 = 0;
394 arg4 = 0;
395
396 switch (IPC_GET_METHOD(call)) {
397 case IPC_M_PHONE_HUNGUP:
398 gcons_notify_disconnect(consnum);
399
400 /* Answer all pending requests */
401 while (conn->keyrequest_counter > 0) {
402 conn->keyrequest_counter--;
403 ipc_answer_0(fifo_pop(conn->keyrequests),
404 ENOENT);
405 break;
406 }
407 conn->used = 0;
408 return;
409 case CONSOLE_PUTCHAR:
410 write_char(consnum, IPC_GET_ARG1(call));
411 gcons_notify_char(consnum);
412 break;
413 case CONSOLE_CLEAR:
414 /* Send message to fb */
415 if (consnum == active_console) {
416 async_msg_0(fb_info.phone, FB_CLEAR);
417 }
418
419 screenbuffer_clear(&conn->screenbuffer);
420
421 break;
422 case CONSOLE_GOTO:
423 screenbuffer_goto(&conn->screenbuffer,
424 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
425 if (consnum == active_console)
426 curs_goto(IPC_GET_ARG1(call),
427 IPC_GET_ARG2(call));
428 break;
429 case CONSOLE_GETSIZE:
430 arg1 = fb_info.rows;
431 arg2 = fb_info.cols;
432 break;
433 case CONSOLE_FLUSH:
434 if (consnum == active_console)
435 async_req_0_0(fb_info.phone, FB_FLUSH);
436 break;
437 case CONSOLE_SET_STYLE:
438 arg1 = IPC_GET_ARG1(call);
439 screenbuffer_set_style(&conn->screenbuffer, arg1);
440 if (consnum == active_console)
441 set_style(arg1);
442 break;
443 case CONSOLE_SET_COLOR:
444 arg1 = IPC_GET_ARG1(call);
445 arg2 = IPC_GET_ARG2(call);
446 arg3 = IPC_GET_ARG3(call);
447 screenbuffer_set_color(&conn->screenbuffer, arg1,
448 arg2, arg3);
449 if (consnum == active_console)
450 set_color(arg1, arg2, arg3);
451 break;
452 case CONSOLE_SET_RGB_COLOR:
453 arg1 = IPC_GET_ARG1(call);
454 arg2 = IPC_GET_ARG2(call);
455 screenbuffer_set_rgb_color(&conn->screenbuffer, arg1,
456 arg2);
457 if (consnum == active_console)
458 set_rgb_color(arg1, arg2);
459 break;
460 case CONSOLE_CURSOR_VISIBILITY:
461 arg1 = IPC_GET_ARG1(call);
462 conn->screenbuffer.is_cursor_visible = arg1;
463 if (consnum == active_console)
464 curs_visibility(arg1);
465 break;
466 case CONSOLE_GETKEY:
467 if (keybuffer_empty(&conn->keybuffer)) {
468 /* buffer is empty -> store request */
469 if (conn->keyrequest_counter <
470 MAX_KEYREQUESTS_BUFFERED) {
471 fifo_push(conn->keyrequests, callid);
472 conn->keyrequest_counter++;
473 } else {
474 /*
475 * No key available and too many
476 * requests => fail.
477 */
478 ipc_answer_0(callid, ELIMIT);
479 }
480 continue;
481 }
482 kbd_event_t ev;
483 keybuffer_pop(&conn->keybuffer, &ev);
484 arg1 = ev.type;
485 arg2 = ev.key;
486 arg3 = ev.mods;
487 arg4 = ev.c;
488 break;
489 }
490 ipc_answer_4(callid, EOK, arg1, arg2, arg3, arg4);
491 }
492}
493
494static void interrupt_received(ipc_callid_t callid, ipc_call_t *call)
495{
496 change_console(prev_console);
497}
498
499int main(int argc, char *argv[])
500{
501 printf(NAME ": HelenOS Console service\n");
502
503 ipcarg_t phonehash;
504 int kbd_phone;
505 size_t ib_size;
506 int i;
507
508 async_set_client_connection(client_connection);
509
510 /* Connect to keyboard driver */
511 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
512 while (kbd_phone < 0) {
513 usleep(10000);
514 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
515 }
516
517 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
518 return -1;
519 async_new_connection(phonehash, 0, NULL, keyboard_events);
520
521 /* Connect to framebuffer driver */
522 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
523 while (fb_info.phone < 0) {
524 usleep(10000);
525 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
526 }
527
528 /* Disable kernel output to the console */
529 __SYSCALL0(SYS_DEBUG_DISABLE_CONSOLE);
530
531 /* Initialize gcons */
532 gcons_init(fb_info.phone);
533 /* Synchronize, the gcons can have something in queue */
534 async_req_0_0(fb_info.phone, FB_FLUSH);
535
536 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
537 &fb_info.cols);
538 set_rgb_color(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
539 clrscr();
540
541 /* Init virtual consoles */
542 for (i = 0; i < CONSOLE_COUNT; i++) {
543 connections[i].used = 0;
544 keybuffer_init(&connections[i].keybuffer);
545
546 connections[i].keyrequests.head = 0;
547 connections[i].keyrequests.tail = 0;
548 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
549 connections[i].keyrequest_counter = 0;
550
551 if (screenbuffer_init(&connections[i].screenbuffer,
552 fb_info.cols, fb_info.rows) == NULL) {
553 /* FIXME: handle error */
554 return -1;
555 }
556 }
557 connections[KERNEL_CONSOLE].used = 1;
558
559 /* Set up shared memory buffer. */
560 ib_size = sizeof(keyfield_t) * fb_info.cols * fb_info.rows;
561 interbuffer = as_get_mappable_page(ib_size);
562
563 if (as_area_create(interbuffer, ib_size, AS_AREA_READ |
564 AS_AREA_WRITE | AS_AREA_CACHEABLE) != interbuffer) {
565 interbuffer = NULL;
566 }
567
568 if (interbuffer) {
569 if (ipc_share_out_start(fb_info.phone, interbuffer,
570 AS_AREA_READ) != EOK) {
571 as_area_destroy(interbuffer);
572 interbuffer = NULL;
573 }
574 }
575
576 curs_goto(0, 0);
577 curs_visibility(
578 connections[active_console].screenbuffer.is_cursor_visible);
579
580 /* Register at NS */
581 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
582 return -1;
583
584 /* Receive kernel notifications */
585 if (sysinfo_value("kconsole.present")) {
586 int devno = sysinfo_value("kconsole.devno");
587 int inr = sysinfo_value("kconsole.inr");
588 if (ipc_register_irq(inr, devno, 0, NULL) != EOK)
589 printf(NAME ": Error registering kconsole notifications\n");
590
591 async_set_interrupt_received(interrupt_received);
592 }
593
594 // FIXME: avoid connectiong to itself, keep using klog
595 // printf(NAME ": Accepting connections\n");
596 async_manager();
597
598 return 0;
599}
600
601/** @}
602 */
Note: See TracBrowser for help on using the repository browser.