source: mainline/console/console.c@ 1f36e90

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 1f36e90 was 429acb9, checked in by Ondrej Palkovsky <ondrap@…>, 19 years ago

Added nice kernel console switching, currently works on fb devices.
  • Property mode set to 100644
File size: 12.4 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
30#include <kbd.h>
31#include <fb.h>
32#include <ipc/ipc.h>
33#include <ipc/fb.h>
34#include <ipc/services.h>
35#include <errno.h>
36#include <key_buffer.h>
37#include <console.h>
38#include <unistd.h>
39#include <async.h>
40#include <libadt/fifo.h>
41#include <screenbuffer.h>
42#include <sys/mman.h>
43
44#include "gcons.h"
45
46#define MAX_KEYREQUESTS_BUFFERED 32
47
48#define NAME "CONSOLE"
49
50/** Index of currently used virtual console.
51 */
52int active_console = 0;
53
54/** Information about framebuffer
55 */
56struct {
57 int phone; /**< Framebuffer phone */
58 ipcarg_t rows; /**< Framebuffer rows */
59 ipcarg_t cols; /**< Framebuffer columns */
60} fb_info;
61
62
63typedef struct {
64 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
65 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t , MAX_KEYREQUESTS_BUFFERED); /**< Buffer for unsatisfied request for keys. */
66 int keyrequest_counter; /**< Number of requests in buffer. */
67 int client_phone; /**< Phone to connected client. */
68 int used; /**< 1 if this virtual console is connected to some client.*/
69 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen contents and related settings. */
70} connection_t;
71
72static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual consoles */
73static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared with framebufer used for faster virt. console switching */
74
75static int kernel_pixmap = -1; /**< Number of fb pixmap, where kernel console is stored */
76
77
78/** Find unused virtual console.
79 *
80 */
81static int find_free_connection()
82{
83 int i = 0;
84
85 while (i < CONSOLE_COUNT) {
86 if (connections[i].used == 0)
87 return i;
88 ++i;
89 }
90 return CONSOLE_COUNT;
91}
92
93/** Find index of virtual console used by client with given phone.
94 *
95 */
96static int find_connection(int client_phone)
97{
98 int i = 0;
99
100 while (i < CONSOLE_COUNT) {
101 if (connections[i].client_phone == client_phone)
102 return i;
103 ++i;
104 }
105 return CONSOLE_COUNT;
106}
107
108static void clrscr(void)
109{
110 nsend_call(fb_info.phone, FB_CLEAR, 0);
111}
112
113static void curs_visibility(int v)
114{
115 send_call(fb_info.phone, FB_CURSOR_VISIBILITY, v);
116}
117
118static void curs_goto(int row, int col)
119{
120 nsend_call_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
121
122}
123
124static void set_style(style_t *style)
125{
126 nsend_call_2(fb_info.phone, FB_SET_STYLE, style->fg_color, style->bg_color);
127}
128
129static void set_style_col(int fgcolor, int bgcolor)
130{
131 nsend_call_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
132}
133
134static void prtchr(char c, int row, int col)
135{
136 nsend_call_3(fb_info.phone, FB_PUTCHAR, c, row, col);
137
138}
139
140/** Check key and process special keys.
141 *
142 * */
143static void write_char(int console, char key)
144{
145 screenbuffer_t *scr = &(connections[console].screenbuffer);
146
147 switch (key) {
148 case '\n':
149 scr->position_y += 1;
150 scr->position_x = 0;
151 break;
152 case '\r':
153 break;
154 case '\t':
155 scr->position_x += 8;
156 scr->position_x -= scr->position_x % 8;
157 break;
158 case '\b':
159 if (scr->position_x == 0)
160 break;
161
162 scr->position_x--;
163
164 if (console == active_console)
165 prtchr(' ', scr->position_y, scr->position_x);
166
167 screenbuffer_putchar(scr, ' ');
168
169 break;
170 default:
171 if (console == active_console)
172 prtchr(key, scr->position_y, scr->position_x);
173
174 screenbuffer_putchar(scr, key);
175 scr->position_x++;
176 }
177
178 scr->position_y += (scr->position_x >= scr->size_x);
179
180 if (scr->position_y >= scr->size_y) {
181 scr->position_y = scr->size_y - 1;
182 screenbuffer_clear_line(scr, scr->top_line++);
183 if (console == active_console)
184 nsend_call(fb_info.phone, FB_SCROLL, 1);
185 }
186
187 scr->position_x = scr->position_x % scr->size_x;
188
189 if (console == active_console)
190 curs_goto(scr->position_y, scr->position_x);
191
192}
193
194/** Save current screen to pixmap, draw old pixmap
195 *
196 * @param oldpixmap Old pixmap
197 * @return ID of pixmap of current screen
198 */
199static int switch_screens(int oldpixmap)
200{
201 int newpmap;
202
203 /* Save screen */
204 newpmap = sync_send(fb_info.phone, FB_VP2PIXMAP, 0, NULL);
205 if (newpmap < 0)
206 return -1;
207
208 if (oldpixmap != -1) {
209 /* Show old screen */
210 nsend_call_2(fb_info.phone, FB_VP_DRAW_PIXMAP, 0, oldpixmap);
211 /* Drop old pixmap */
212 nsend_call(fb_info.phone, FB_DROP_PIXMAP, oldpixmap);
213 }
214
215 return newpmap;
216}
217
218/** Switch to new console */
219static void change_console(int newcons)
220{
221 connection_t *conn;
222 static int console_pixmap = -1;
223 int i, j;
224 char c;
225
226 if (newcons == active_console)
227 return;
228
229 if (newcons == -1) {
230 if (active_console == -1)
231 return;
232 active_console = -1;
233 curs_visibility(0);
234
235 if (kernel_pixmap == -1) {
236 /* store/restore unsupported */
237 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
238 clrscr();
239 } else {
240 gcons_in_kernel();
241 console_pixmap = switch_screens(kernel_pixmap);
242 kernel_pixmap = -1;
243 }
244
245 __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
246 return;
247 }
248
249 if (console_pixmap != -1) {
250 kernel_pixmap = switch_screens(console_pixmap);
251 console_pixmap = -1;
252 }
253
254 active_console = newcons;
255 gcons_change_console(newcons);
256 conn = &connections[active_console];
257
258 curs_visibility(0);
259 if (interbuffer) {
260 for (i = 0; i < conn->screenbuffer.size_x; i++)
261 for (j = 0; j < conn->screenbuffer.size_y; j++)
262 interbuffer[i + j*conn->screenbuffer.size_x] = *get_field_at(&(conn->screenbuffer),i, j);
263
264 sync_send_2(fb_info.phone, FB_DRAW_TEXT_DATA, 0, 0, NULL, NULL);
265 } else {
266 clrscr();
267
268 for (i = 0; i < conn->screenbuffer.size_x; i++)
269 for (j = 0; j < conn->screenbuffer.size_y; j++) {
270 c = get_field_at(&(conn->screenbuffer),i, j)->character;
271 if (c && c != ' ')
272 prtchr(c, j, i);
273 }
274
275 }
276 curs_goto(conn->screenbuffer.position_y, conn->screenbuffer.position_x);
277 set_style(&conn->screenbuffer.style);
278 curs_visibility(1);
279}
280
281/** Handler for keyboard */
282static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
283{
284 ipc_callid_t callid;
285 ipc_call_t call;
286 int retval;
287 char c;
288 connection_t *conn;
289
290 /* Ignore parameters, the connection is alread opened */
291 while (1) {
292 callid = async_get_call(&call);
293 switch (IPC_GET_METHOD(call)) {
294 case IPC_M_PHONE_HUNGUP:
295 ipc_answer_fast(callid,0,0,0);
296 /* TODO: Handle hangup */
297 return;
298 case KBD_PUSHCHAR:
299 /* got key from keyboard driver */
300
301 retval = 0;
302 c = IPC_GET_ARG1(call);
303 /* switch to another virtual console */
304
305 conn = &connections[active_console];
306// if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
307 if ((c >= '0') && (c < '0' + CONSOLE_COUNT)) {
308 if (c == '0')
309 change_console(-1);
310 else
311 change_console(c - '1');
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_fast(fifo_pop(conn->keyrequests), 0, c, 0);
319 break;
320 }
321
322 /*FIXME: else store key to its buffer */
323 keybuffer_push(&conn->keybuffer, c);
324
325 break;
326 default:
327 retval = ENOENT;
328 }
329 ipc_answer_fast(callid, retval, 0, 0);
330 }
331}
332
333/** Default thread for new connections */
334static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
335{
336 ipc_callid_t callid;
337 ipc_call_t call;
338 int consnum;
339 ipcarg_t arg1, arg2;
340
341 if ((consnum = find_free_connection()) == CONSOLE_COUNT) {
342 ipc_answer_fast(iid,ELIMIT,0,0);
343 return;
344 }
345
346 connections[consnum].used = 1;
347 connections[consnum].client_phone = IPC_GET_ARG3(call);
348 screenbuffer_clear(&(connections[consnum].screenbuffer));
349
350 /* Accept the connection */
351 ipc_answer_fast(iid,0,0,0);
352
353 while (1) {
354 callid = async_get_call(&call);
355 arg1 = arg2 = 0;
356 switch (IPC_GET_METHOD(call)) {
357 case IPC_M_PHONE_HUNGUP:
358 /* TODO */
359 ipc_answer_fast(callid, 0,0,0);
360 return;
361 case CONSOLE_PUTCHAR:
362 write_char(consnum, IPC_GET_ARG1(call));
363 gcons_notify_char(consnum);
364 break;
365 case CONSOLE_CLEAR:
366 /* Send message to fb */
367 if (consnum == active_console) {
368 send_call(fb_info.phone, FB_CLEAR, 0);
369 }
370
371 screenbuffer_clear(&(connections[consnum].screenbuffer));
372
373 break;
374 case CONSOLE_GOTO:
375
376 screenbuffer_goto(&(connections[consnum].screenbuffer), IPC_GET_ARG2(call), IPC_GET_ARG1(call));
377
378 break;
379
380 case CONSOLE_GETSIZE:
381 arg1 = fb_info.rows;
382 arg2 = fb_info.cols;
383 break;
384 case CONSOLE_FLUSH:
385 sync_send_2(fb_info.phone, FB_FLUSH, 0, 0, NULL, NULL);
386 break;
387 case CONSOLE_SET_STYLE:
388
389 arg1 = IPC_GET_ARG1(call);
390 arg2 = IPC_GET_ARG2(call);
391 screenbuffer_set_style(&(connections[consnum].screenbuffer),arg1, arg2);
392 if (consnum == active_console)
393 set_style_col(arg1, arg2);
394
395 break;
396 case CONSOLE_GETCHAR:
397 if (keybuffer_empty(&(connections[consnum].keybuffer))) {
398 /* buffer is empty -> store request */
399 if (connections[consnum].keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {
400 fifo_push(connections[consnum].keyrequests, callid);
401 connections[consnum].keyrequest_counter++;
402 } else {
403 /* no key available and too many requests => fail */
404 ipc_answer_fast(callid, ELIMIT, 0, 0);
405 }
406 continue;
407 };
408 keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);
409
410 break;
411 }
412 ipc_answer_fast(callid, 0, arg1, arg2);
413 }
414}
415
416int main(int argc, char *argv[])
417{
418 ipcarg_t phonehash;
419 int kbd_phone, fb_phone;
420 ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
421 int i;
422
423 async_set_client_connection(client_connection);
424
425 /* Connect to keyboard driver */
426
427 while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
428 usleep(10000);
429 };
430
431 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
432 return -1;
433 };
434
435 /* Connect to framebuffer driver */
436
437 while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
438 usleep(10000);
439 }
440
441 /* Save old kernel screen */
442 kernel_pixmap = switch_screens(-1);
443
444 /* Initialize gcons */
445 gcons_init(fb_info.phone);
446 /* Synchronize, the gcons can have something in queue */
447 sync_send_2(fb_info.phone, FB_GET_CSIZE, 0, 0, NULL, NULL);
448
449
450 ipc_call_sync_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
451 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
452 clrscr();
453
454 /* Init virtual consoles */
455 for (i = 0; i < CONSOLE_COUNT; i++) {
456 connections[i].used = 0;
457 keybuffer_init(&(connections[i].keybuffer));
458
459 connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
460 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
461 connections[i].keyrequest_counter = 0;
462
463 if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
464 /*FIXME: handle error */
465 return -1;
466 }
467 }
468
469 if ((interbuffer = mmap(NULL, sizeof(keyfield_t) * fb_info.cols * fb_info.rows , PROTO_READ|PROTO_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, 0 ,0 )) != NULL) {
470 if (ipc_call_sync_3(fb_info.phone, IPC_M_AS_AREA_SEND, (ipcarg_t)interbuffer, 0, AS_AREA_READ, NULL, NULL, NULL) != 0) {
471 munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
472 interbuffer = NULL;
473 }
474 }
475
476 async_new_connection(phonehash, 0, NULL, keyboard_events);
477
478 sync_send_2(fb_info.phone, FB_CURSOR_GOTO, 0, 0, NULL, NULL);
479 nsend_call(fb_info.phone, FB_CURSOR_VISIBILITY, 1);
480
481 /* Register at NS */
482 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
483 return -1;
484 };
485
486 async_manager();
487
488 return 0;
489}
490
Note: See TracBrowser for help on using the repository browser.