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1445 cejka 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>
1451 cejka 31
#include <fb.h>
1445 cejka 32
#include <ipc/ipc.h>
1451 cejka 33
#include <ipc/fb.h>
1445 cejka 34
#include <ipc/services.h>
35
#include <errno.h>
1451 cejka 36
#include <key_buffer.h>
37
#include <console.h>
1453 palkovsky 38
#include <unistd.h>
39
#include <async.h>
1481 cejka 40
#include <libadt/fifo.h>
1487 cejka 41
#include <screenbuffer.h>
1512 cejka 42
#include <sys/mman.h>
1445 cejka 43
 
1522 palkovsky 44
#include "gcons.h"
45
 
1481 cejka 46
#define MAX_KEYREQUESTS_BUFFERED 32
1451 cejka 47
 
1445 cejka 48
#define NAME "CONSOLE"
49
 
1526 cejka 50
/** Index of currently used virtual console.
51
 */
1512 cejka 52
int active_console = 0;
1453 palkovsky 53
 
1526 cejka 54
/** Information about framebuffer
55
 */
1487 cejka 56
struct {
57
    int phone;      /**< Framebuffer phone */
1506 cejka 58
    ipcarg_t rows;      /**< Framebuffer rows */
59
    ipcarg_t cols;      /**< Framebuffer columns */
1487 cejka 60
} fb_info;
61
 
1526 cejka 62
 
1451 cejka 63
typedef struct {
1526 cejka 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. */
1451 cejka 70
} connection_t;
71
 
1552 palkovsky 72
static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual consoles */
73
static keyfield_t *interbuffer = NULL;          /**< Pointer to memory shared with framebufer used for faster virt. console switching */
1506 cejka 74
 
1552 palkovsky 75
static int kernel_pixmap = -1;      /**< Number of fb pixmap, where kernel console is stored */
1506 cejka 76
 
1552 palkovsky 77
 
1526 cejka 78
/** Find unused virtual console.
79
 *
80
 */
1451 cejka 81
static 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
 
1526 cejka 93
/** Find index of virtual console used by client with given phone.
94
 *
95
 */
1451 cejka 96
static 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
 
1552 palkovsky 108
static void clrscr(void)
109
{
110
    nsend_call(fb_info.phone, FB_CLEAR, 0);
111
}
112
 
113
static void curs_visibility(int v)
114
{
115
    send_call(fb_info.phone, FB_CURSOR_VISIBILITY, v);
116
}
117
 
118
static void curs_goto(int row, int col)
119
{
120
    nsend_call_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
121
 
122
}
123
 
124
static 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
 
129
static void set_style_col(int fgcolor, int bgcolor)
130
{
131
    nsend_call_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
132
}
133
 
134
static void prtchr(char c, int row, int col)
135
{
136
    nsend_call_3(fb_info.phone, FB_PUTCHAR, c, row, col);
137
 
138
}
139
 
1497 cejka 140
/** Check key and process special keys.
141
 *
142
 * */
143
static 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
 
1552 palkovsky 164
            if (console == active_console)
165
                prtchr(' ', scr->position_y, scr->position_x);
1497 cejka 166
 
167
            screenbuffer_putchar(scr, ' ');
168
 
169
            break;
170
        default:   
1552 palkovsky 171
            if (console == active_console)
172
                prtchr(key, scr->position_y, scr->position_x);
1497 cejka 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++);
1518 palkovsky 183
        if (console == active_console)
184
            nsend_call(fb_info.phone, FB_SCROLL, 1);
1497 cejka 185
    }
186
 
187
    scr->position_x = scr->position_x % scr->size_x;
188
 
1552 palkovsky 189
    if (console == active_console)
190
        curs_goto(scr->position_y, scr->position_x);
1504 cejka 191
 
1497 cejka 192
}
193
 
1552 palkovsky 194
/** Save current screen to pixmap, draw old pixmap
195
 *
196
 * @param oldpixmap Old pixmap
197
 * @return ID of pixmap of current screen
198
 */
199
static 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;
1497 cejka 207
 
1552 palkovsky 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 */
219
static 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
 
1526 cejka 281
/** Handler for keyboard */
1453 palkovsky 282
static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
1445 cejka 283
{
1453 palkovsky 284
    ipc_callid_t callid;
1445 cejka 285
    ipc_call_t call;
1453 palkovsky 286
    int retval;
1552 palkovsky 287
    char c;
1489 palkovsky 288
    connection_t *conn;
1506 cejka 289
 
1453 palkovsky 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 */
1465 cejka 300
 
1453 palkovsky 301
            retval = 0;
1520 cejka 302
            c = IPC_GET_ARG1(call);
1453 palkovsky 303
            /* switch to another virtual console */
1481 cejka 304
 
1489 palkovsky 305
            conn = &connections[active_console];
1490 palkovsky 306
//          if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
1520 cejka 307
            if ((c >= '0') && (c < '0' + CONSOLE_COUNT)) {
1552 palkovsky 308
                if (c == '0')
309
                    change_console(-1);
310
                else
311
                    change_console(c - '1');
1453 palkovsky 312
                break;
313
            }
1481 cejka 314
 
315
            /* if client is awaiting key, send it */
1489 palkovsky 316
            if (conn->keyrequest_counter > 0) {    
317
                conn->keyrequest_counter--;
318
                ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
1481 cejka 319
                break;
320
            }
321
 
322
            /*FIXME: else store key to its buffer */
1489 palkovsky 323
            keybuffer_push(&conn->keybuffer, c);
1476 cejka 324
 
1453 palkovsky 325
            break;
326
        default:
1459 palkovsky 327
            retval = ENOENT;
1453 palkovsky 328
        }      
1459 palkovsky 329
        ipc_answer_fast(callid, retval, 0, 0);
1453 palkovsky 330
    }
331
}
332
 
333
/** Default thread for new connections */
1518 palkovsky 334
static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
1453 palkovsky 335
{
1445 cejka 336
    ipc_callid_t callid;
1453 palkovsky 337
    ipc_call_t call;
338
    int consnum;
1521 cejka 339
    ipcarg_t arg1, arg2;
1453 palkovsky 340
 
341
    if ((consnum = find_free_connection()) == CONSOLE_COUNT) {
342
        ipc_answer_fast(iid,ELIMIT,0,0);
343
        return;
344
    }
1497 cejka 345
 
1453 palkovsky 346
    connections[consnum].used = 1;
347
    connections[consnum].client_phone = IPC_GET_ARG3(call);
1487 cejka 348
    screenbuffer_clear(&(connections[consnum].screenbuffer));
1497 cejka 349
 
1453 palkovsky 350
    /* Accept the connection */
351
    ipc_answer_fast(iid,0,0,0);
352
 
353
    while (1) {
354
        callid = async_get_call(&call);
1521 cejka 355
        arg1 = arg2 = 0;
1453 palkovsky 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:
1497 cejka 362
            write_char(consnum, IPC_GET_ARG1(call));
1528 palkovsky 363
            gcons_notify_char(consnum);
1453 palkovsky 364
            break;
1476 cejka 365
        case CONSOLE_CLEAR:
1487 cejka 366
            /* Send message to fb */
367
            if (consnum == active_console) {
1518 palkovsky 368
                send_call(fb_info.phone, FB_CLEAR, 0);
1487 cejka 369
            }
370
 
371
            screenbuffer_clear(&(connections[consnum].screenbuffer));
372
 
1476 cejka 373
            break;
374
        case CONSOLE_GOTO:
1487 cejka 375
 
1528 palkovsky 376
            screenbuffer_goto(&(connections[consnum].screenbuffer), IPC_GET_ARG2(call), IPC_GET_ARG1(call));
1487 cejka 377
 
1476 cejka 378
            break;
1523 cejka 379
 
1521 cejka 380
        case CONSOLE_GETSIZE:
1528 palkovsky 381
            arg1 = fb_info.rows;
382
            arg2 = fb_info.cols;
1521 cejka 383
            break;
1523 cejka 384
        case CONSOLE_FLUSH:
385
            sync_send_2(fb_info.phone, FB_FLUSH, 0, 0, NULL, NULL);    
386
            break;
1525 cejka 387
        case CONSOLE_SET_STYLE:
388
 
389
            arg1 = IPC_GET_ARG1(call);
390
            arg2 = IPC_GET_ARG2(call);
1533 palkovsky 391
            screenbuffer_set_style(&(connections[consnum].screenbuffer),arg1, arg2);
1525 cejka 392
            if (consnum == active_console)
1552 palkovsky 393
                set_style_col(arg1, arg2);
1525 cejka 394
 
395
            break;
1453 palkovsky 396
        case CONSOLE_GETCHAR:
1481 cejka 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;
1453 palkovsky 407
            };
1476 cejka 408
            keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);
1465 cejka 409
 
1453 palkovsky 410
            break;
411
        }
1521 cejka 412
        ipc_answer_fast(callid, 0, arg1, arg2);
1453 palkovsky 413
    }
414
}
415
 
416
int main(int argc, char *argv[])
417
{
418
    ipcarg_t phonehash;
1451 cejka 419
    int kbd_phone, fb_phone;
1445 cejka 420
    ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
1451 cejka 421
    int i;
1490 palkovsky 422
 
423
    async_set_client_connection(client_connection);
1445 cejka 424
 
425
    /* Connect to keyboard driver */
426
 
1451 cejka 427
    while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
1453 palkovsky 428
        usleep(10000);
1445 cejka 429
    };
430
 
1453 palkovsky 431
    if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
1445 cejka 432
        return -1;
433
    };
434
 
435
    /* Connect to framebuffer driver */
436
 
1487 cejka 437
    while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
438
        usleep(10000);
439
    }
1552 palkovsky 440
 
441
    /* Save old kernel screen */
442
    kernel_pixmap = switch_screens(-1);
1522 palkovsky 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
 
1487 cejka 449
 
450
    ipc_call_sync_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
1552 palkovsky 451
    set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
452
    clrscr();
1487 cejka 453
 
454
    /* Init virtual consoles */
1451 cejka 455
    for (i = 0; i < CONSOLE_COUNT; i++) {
456
        connections[i].used = 0;
457
        keybuffer_init(&(connections[i].keybuffer));
1481 cejka 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;
1487 cejka 462
 
463
        if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
464
            /*FIXME: handle error */
465
            return -1;
466
        }
1451 cejka 467
    }
1445 cejka 468
 
1512 cejka 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) {
1547 palkovsky 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) {
1512 cejka 471
            munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
472
            interbuffer = NULL;
473
        }
474
    }
1520 cejka 475
 
1506 cejka 476
    async_new_connection(phonehash, 0, NULL, keyboard_events);
477
 
1522 palkovsky 478
    sync_send_2(fb_info.phone, FB_CURSOR_GOTO, 0, 0, NULL, NULL);
1520 cejka 479
    nsend_call(fb_info.phone, FB_CURSOR_VISIBILITY, 1);
1497 cejka 480
 
1518 palkovsky 481
    /* Register at NS */
1453 palkovsky 482
    if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
1445 cejka 483
        return -1;
484
    };
485
 
1453 palkovsky 486
    async_manager();
1451 cejka 487
 
1445 cejka 488
    return 0;  
489
}
1520 cejka 490