source: mainline/uspace/srv/console/console.c@ f89979b

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since f89979b was f89979b, checked in by Jiri Svoboda <jirik.svoboda@…>, 16 years ago

Keyboard driver overhaul — organize by hardware structure. This is w.i.p. Modifier keys, as well as ppc32, ia64 and sparc64 will not work yet.
  • 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 <kbd/keycode.h>
40#include <ipc/fb.h>
41#include <ipc/services.h>
42#include <errno.h>
43#include <key_buffer.h>
44#include <ipc/console.h>
45#include <unistd.h>
46#include <async.h>
47#include <libadt/fifo.h>
48#include <screenbuffer.h>
49#include <sys/mman.h>
50#include <stdio.h>
51#include <sysinfo.h>
52
53#include "console.h"
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;
63int prev_console = 0;
64
65/** Information about framebuffer
66 */
67struct {
68 int phone; /**< Framebuffer phone */
69 ipcarg_t rows; /**< Framebuffer rows */
70 ipcarg_t cols; /**< Framebuffer columns */
71} fb_info;
72
73typedef struct {
74 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
75 /** Buffer for unsatisfied request for keys. */
76 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t,
77 MAX_KEYREQUESTS_BUFFERED);
78 int keyrequest_counter; /**< Number of requests in buffer. */
79 int client_phone; /**< Phone to connected client. */
80 int used; /**< 1 if this virtual console is
81 * connected to some client.*/
82 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen
83 * contents and related settings. */
84} connection_t;
85
86static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual
87 * consoles */
88static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared
89 * with framebufer used for
90 * faster virtual console
91 * switching */
92
93
94/** Find unused virtual console.
95 *
96 */
97static int find_free_connection(void)
98{
99 int i;
100
101 for (i = 0; i < CONSOLE_COUNT; i++) {
102 if (!connections[i].used)
103 return i;
104 }
105 return -1;
106}
107
108static void clrscr(void)
109{
110 async_msg_0(fb_info.phone, FB_CLEAR);
111}
112
113static void curs_visibility(bool visible)
114{
115 async_msg_1(fb_info.phone, FB_CURSOR_VISIBILITY, visible);
116}
117
118static void curs_hide_sync(void)
119{
120 ipc_call_sync_1_0(fb_info.phone, FB_CURSOR_VISIBILITY, false);
121}
122
123static void curs_goto(int row, int col)
124{
125 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
126}
127
128static void set_style(int style)
129{
130 async_msg_1(fb_info.phone, FB_SET_STYLE, style);
131}
132
133static void set_color(int fgcolor, int bgcolor, int flags)
134{
135 async_msg_3(fb_info.phone, FB_SET_COLOR, fgcolor, bgcolor, flags);
136}
137
138static void set_rgb_color(int fgcolor, int bgcolor)
139{
140 async_msg_2(fb_info.phone, FB_SET_RGB_COLOR, fgcolor, bgcolor);
141}
142
143static void set_attrs(attrs_t *attrs)
144{
145 switch (attrs->t) {
146 case at_style:
147 set_style(attrs->a.s.style);
148 break;
149
150 case at_idx:
151 set_color(attrs->a.i.fg_color, attrs->a.i.bg_color,
152 attrs->a.i.flags);
153 break;
154
155 case at_rgb:
156 set_rgb_color(attrs->a.r.fg_color, attrs->a.r.bg_color);
157 break;
158 }
159}
160
161static void prtchr(char c, int row, int col)
162{
163 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
164}
165
166/** Check key and process special keys.
167 *
168 *
169 */
170static void write_char(int console, char key)
171{
172 screenbuffer_t *scr = &(connections[console].screenbuffer);
173
174 switch (key) {
175 case '\n':
176 scr->position_y++;
177 scr->position_x = 0;
178 break;
179 case '\r':
180 break;
181 case '\t':
182 scr->position_x += 8;
183 scr->position_x -= scr->position_x % 8;
184 break;
185 case '\b':
186 if (scr->position_x == 0)
187 break;
188 scr->position_x--;
189 if (console == active_console)
190 prtchr(' ', scr->position_y, scr->position_x);
191 screenbuffer_putchar(scr, ' ');
192 break;
193 default:
194 if (console == active_console)
195 prtchr(key, scr->position_y, scr->position_x);
196
197 screenbuffer_putchar(scr, key);
198 scr->position_x++;
199 }
200
201 scr->position_y += (scr->position_x >= scr->size_x);
202
203 if (scr->position_y >= scr->size_y) {
204 scr->position_y = scr->size_y - 1;
205 screenbuffer_clear_line(scr, scr->top_line);
206 scr->top_line = (scr->top_line + 1) % scr->size_y;
207 if (console == active_console)
208 async_msg_1(fb_info.phone, FB_SCROLL, 1);
209 }
210
211 scr->position_x = scr->position_x % scr->size_x;
212
213 if (console == active_console)
214 curs_goto(scr->position_y, scr->position_x);
215
216}
217
218/** Switch to new console */
219static void change_console(int newcons)
220{
221 connection_t *conn;
222 int i, j, rc;
223 keyfield_t *field;
224 attrs_t *attrs;
225
226 if (newcons == active_console)
227 return;
228
229 if (newcons == KERNEL_CONSOLE) {
230 async_serialize_start();
231 curs_hide_sync();
232 gcons_in_kernel();
233 async_serialize_end();
234
235 if (__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE)) {
236 prev_console = active_console;
237 active_console = KERNEL_CONSOLE;
238 } else
239 newcons = active_console;
240 }
241
242 if (newcons != KERNEL_CONSOLE) {
243 async_serialize_start();
244
245 if (active_console == KERNEL_CONSOLE)
246 gcons_redraw_console();
247
248 active_console = newcons;
249 gcons_change_console(newcons);
250 conn = &connections[active_console];
251
252 set_attrs(&conn->screenbuffer.attrs);
253 curs_visibility(false);
254 if (interbuffer) {
255 for (i = 0; i < conn->screenbuffer.size_x; i++)
256 for (j = 0; j < conn->screenbuffer.size_y; j++) {
257 unsigned int size_x;
258
259 size_x = conn->screenbuffer.size_x;
260 interbuffer[i + j * size_x] =
261 *get_field_at(&conn->screenbuffer, i, j);
262 }
263 /* This call can preempt, but we are already at the end */
264 rc = async_req_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
265 }
266
267 if ((!interbuffer) || (rc != 0)) {
268 set_attrs(&conn->screenbuffer.attrs);
269 clrscr();
270 attrs = &conn->screenbuffer.attrs;
271
272 for (j = 0; j < conn->screenbuffer.size_y; j++)
273 for (i = 0; i < conn->screenbuffer.size_x; i++) {
274 field = get_field_at(&conn->screenbuffer, i, j);
275 if (!attrs_same(*attrs, field->attrs))
276 set_attrs(&field->attrs);
277 attrs = &field->attrs;
278 if ((field->character == ' ') &&
279 (attrs_same(field->attrs,
280 conn->screenbuffer.attrs)))
281 continue;
282
283 prtchr(field->character, j, i);
284 }
285 }
286
287 curs_goto(conn->screenbuffer.position_y,
288 conn->screenbuffer.position_x);
289 curs_visibility(conn->screenbuffer.is_cursor_visible);
290
291 async_serialize_end();
292 }
293}
294
295/** Handler for keyboard */
296static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
297{
298 ipc_callid_t callid;
299 ipc_call_t call;
300 int retval;
301 kbd_event_t ev;
302 connection_t *conn;
303 int newcon;
304
305 /* Ignore parameters, the connection is alread opened */
306 while (1) {
307 callid = async_get_call(&call);
308 switch (IPC_GET_METHOD(call)) {
309 case IPC_M_PHONE_HUNGUP:
310 /* TODO: Handle hangup */
311 return;
312 case KBD_MS_LEFT:
313 newcon = gcons_mouse_btn(IPC_GET_ARG1(call));
314 if (newcon != -1)
315 change_console(newcon);
316 retval = 0;
317 break;
318 case KBD_MS_MOVE:
319 gcons_mouse_move(IPC_GET_ARG1(call),
320 IPC_GET_ARG2(call));
321 retval = 0;
322 break;
323 case KBD_EVENT:
324 /* Got event from keyboard driver. */
325 retval = 0;
326 ev.type = IPC_GET_ARG1(call);
327 ev.key = IPC_GET_ARG2(call);
328 ev.mods = IPC_GET_ARG3(call);
329 ev.c = IPC_GET_ARG4(call);
330
331 /* switch to another virtual console */
332
333 conn = &connections[active_console];
334
335 if ((ev.key >= KC_F1) && (ev.key < KC_F1 +
336 CONSOLE_COUNT)) {
337 if (ev.key == KC_F12)
338 change_console(KERNEL_CONSOLE);
339 else
340 change_console(ev.key - KC_F1);
341 break;
342 }
343
344 /* if client is awaiting key, send it */
345 if (conn->keyrequest_counter > 0) {
346 conn->keyrequest_counter--;
347 ipc_answer_4(fifo_pop(conn->keyrequests), EOK,
348 ev.type, ev.key, ev.mods, ev.c);
349 break;
350 }
351
352 keybuffer_push(&conn->keybuffer, &ev);
353 retval = 0;
354
355 break;
356 default:
357 retval = ENOENT;
358 }
359 ipc_answer_0(callid, retval);
360 }
361}
362
363/** Default thread for new connections */
364static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
365{
366 ipc_callid_t callid;
367 ipc_call_t call;
368 int consnum;
369 ipcarg_t arg1, arg2, arg3, arg4;
370 connection_t *conn;
371
372 if ((consnum = find_free_connection()) == -1) {
373 ipc_answer_0(iid, ELIMIT);
374 return;
375 }
376 conn = &connections[consnum];
377 conn->used = 1;
378
379 async_serialize_start();
380 gcons_notify_connect(consnum);
381 conn->client_phone = IPC_GET_ARG5(*icall);
382 screenbuffer_clear(&conn->screenbuffer);
383
384 /* Accept the connection */
385 ipc_answer_0(iid, EOK);
386
387 while (1) {
388 async_serialize_end();
389 callid = async_get_call(&call);
390 async_serialize_start();
391
392 arg1 = 0;
393 arg2 = 0;
394 arg3 = 0;
395 arg4 = 0;
396
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 screenbuffer_set_style(&conn->screenbuffer, arg1);
441 if (consnum == active_console)
442 set_style(arg1);
443 break;
444 case CONSOLE_SET_COLOR:
445 arg1 = IPC_GET_ARG1(call);
446 arg2 = IPC_GET_ARG2(call);
447 arg3 = IPC_GET_ARG3(call);
448 screenbuffer_set_color(&conn->screenbuffer, arg1,
449 arg2, arg3);
450 if (consnum == active_console)
451 set_color(arg1, arg2, arg3);
452 break;
453 case CONSOLE_SET_RGB_COLOR:
454 arg1 = IPC_GET_ARG1(call);
455 arg2 = IPC_GET_ARG2(call);
456 screenbuffer_set_rgb_color(&conn->screenbuffer, arg1,
457 arg2);
458 if (consnum == active_console)
459 set_rgb_color(arg1, arg2);
460 break;
461 case CONSOLE_CURSOR_VISIBILITY:
462 arg1 = IPC_GET_ARG1(call);
463 conn->screenbuffer.is_cursor_visible = arg1;
464 if (consnum == active_console)
465 curs_visibility(arg1);
466 break;
467 case CONSOLE_GETKEY:
468 if (keybuffer_empty(&conn->keybuffer)) {
469 /* buffer is empty -> store request */
470 if (conn->keyrequest_counter <
471 MAX_KEYREQUESTS_BUFFERED) {
472 fifo_push(conn->keyrequests, callid);
473 conn->keyrequest_counter++;
474 } else {
475 /*
476 * No key available and too many
477 * requests => fail.
478 */
479 ipc_answer_0(callid, ELIMIT);
480 }
481 continue;
482 }
483 kbd_event_t ev;
484 keybuffer_pop(&conn->keybuffer, &ev);
485 arg1 = ev.type;
486 arg2 = ev.key;
487 arg3 = ev.mods;
488 arg4 = ev.c;
489 break;
490 }
491 ipc_answer_4(callid, EOK, arg1, arg2, arg3, arg4);
492 }
493}
494
495static void interrupt_received(ipc_callid_t callid, ipc_call_t *call)
496{
497 change_console(prev_console);
498}
499
500int main(int argc, char *argv[])
501{
502 printf(NAME ": HelenOS Console service\n");
503
504 ipcarg_t phonehash;
505 int kbd_phone;
506 size_t ib_size;
507 int i;
508
509 async_set_client_connection(client_connection);
510
511 /* Connect to keyboard driver */
512 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
513 while (kbd_phone < 0) {
514 usleep(10000);
515 kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0, 0);
516 }
517
518 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
519 return -1;
520 async_new_connection(phonehash, 0, NULL, keyboard_events);
521
522 /* Connect to framebuffer driver */
523 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
524 while (fb_info.phone < 0) {
525 usleep(10000);
526 fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0, 0);
527 }
528
529 /* Disable kernel output to the console */
530 __SYSCALL0(SYS_DEBUG_DISABLE_CONSOLE);
531
532 /* Initialize gcons */
533 gcons_init(fb_info.phone);
534 /* Synchronize, the gcons can have something in queue */
535 async_req_0_0(fb_info.phone, FB_FLUSH);
536
537 async_req_0_2(fb_info.phone, FB_GET_CSIZE, &fb_info.rows,
538 &fb_info.cols);
539 set_rgb_color(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
540 clrscr();
541
542 /* Init virtual consoles */
543 for (i = 0; i < CONSOLE_COUNT; i++) {
544 connections[i].used = 0;
545 keybuffer_init(&connections[i].keybuffer);
546
547 connections[i].keyrequests.head = 0;
548 connections[i].keyrequests.tail = 0;
549 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
550 connections[i].keyrequest_counter = 0;
551
552 if (screenbuffer_init(&connections[i].screenbuffer,
553 fb_info.cols, fb_info.rows) == NULL) {
554 /* FIXME: handle error */
555 return -1;
556 }
557 }
558 connections[KERNEL_CONSOLE].used = 1;
559
560 /* Set up shared memory buffer. */
561 ib_size = sizeof(keyfield_t) * fb_info.cols * fb_info.rows;
562 interbuffer = as_get_mappable_page(ib_size);
563
564 if (as_area_create(interbuffer, ib_size, AS_AREA_READ |
565 AS_AREA_WRITE | AS_AREA_CACHEABLE) != interbuffer) {
566 interbuffer = NULL;
567 }
568
569 if (interbuffer) {
570 if (ipc_share_out_start(fb_info.phone, interbuffer,
571 AS_AREA_READ) != EOK) {
572 as_area_destroy(interbuffer);
573 interbuffer = NULL;
574 }
575 }
576
577 curs_goto(0, 0);
578 curs_visibility(
579 connections[active_console].screenbuffer.is_cursor_visible);
580
581 /* Register at NS */
582 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
583 return -1;
584
585 /* Receive kernel notifications */
586 if (sysinfo_value("kconsole.present")) {
587 int devno = sysinfo_value("kconsole.devno");
588 int inr = sysinfo_value("kconsole.inr");
589 if (ipc_register_irq(inr, devno, 0, NULL) != EOK)
590 printf(NAME ": Error registering kconsole notifications\n");
591
592 async_set_interrupt_received(interrupt_received);
593 }
594
595 // FIXME: avoid connectiong to itself, keep using klog
596 // printf(NAME ": Accepting connections\n");
597 async_manager();
598
599 return 0;
600}
601
602/** @}
603 */
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