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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
 */
1610 palkovsky 28
/* TODO: remove */
29
#include <stdio.h>
1445 cejka 30
 
31
 
32
#include <kbd.h>
1451 cejka 33
#include <fb.h>
1445 cejka 34
#include <ipc/ipc.h>
1451 cejka 35
#include <ipc/fb.h>
1445 cejka 36
#include <ipc/services.h>
37
#include <errno.h>
1451 cejka 38
#include <key_buffer.h>
39
#include <console.h>
1453 palkovsky 40
#include <unistd.h>
41
#include <async.h>
1481 cejka 42
#include <libadt/fifo.h>
1487 cejka 43
#include <screenbuffer.h>
1512 cejka 44
#include <sys/mman.h>
1445 cejka 45
 
1522 palkovsky 46
#include "gcons.h"
47
 
1481 cejka 48
#define MAX_KEYREQUESTS_BUFFERED 32
1451 cejka 49
 
1445 cejka 50
#define NAME "CONSOLE"
51
 
1526 cejka 52
/** Index of currently used virtual console.
53
 */
1512 cejka 54
int active_console = 0;
1453 palkovsky 55
 
1526 cejka 56
/** Information about framebuffer
57
 */
1487 cejka 58
struct {
59
    int phone;      /**< Framebuffer phone */
1506 cejka 60
    ipcarg_t rows;      /**< Framebuffer rows */
61
    ipcarg_t cols;      /**< Framebuffer columns */
1487 cejka 62
} fb_info;
63
 
1526 cejka 64
 
1451 cejka 65
typedef struct {
1526 cejka 66
    keybuffer_t keybuffer;      /**< Buffer for incoming keys. */
67
    FIFO_CREATE_STATIC(keyrequests, ipc_callid_t , MAX_KEYREQUESTS_BUFFERED);   /**< Buffer for unsatisfied request for keys. */
68
    int keyrequest_counter;     /**< Number of requests in buffer. */
69
    int client_phone;       /**< Phone to connected client. */
70
    int used;           /**< 1 if this virtual console is connected to some client.*/
71
    screenbuffer_t screenbuffer;    /**< Screenbuffer for saving screen contents and related settings. */
1451 cejka 72
} connection_t;
73
 
1552 palkovsky 74
static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual consoles */
75
static keyfield_t *interbuffer = NULL;          /**< Pointer to memory shared with framebufer used for faster virt. console switching */
1506 cejka 76
 
1552 palkovsky 77
static int kernel_pixmap = -1;      /**< Number of fb pixmap, where kernel console is stored */
1506 cejka 78
 
1552 palkovsky 79
 
1526 cejka 80
/** Find unused virtual console.
81
 *
82
 */
1574 palkovsky 83
static int find_free_connection(void)
1451 cejka 84
{
85
    int i = 0;
86
 
1574 palkovsky 87
    for (i=0; i < CONSOLE_COUNT; i++) {
88
        if (!connections[i].used)
1451 cejka 89
            return i;
90
    }
1574 palkovsky 91
    return -1;
1451 cejka 92
}
93
 
1552 palkovsky 94
static void clrscr(void)
95
{
1610 palkovsky 96
    async_msg(fb_info.phone, FB_CLEAR, 0);
1552 palkovsky 97
}
98
 
99
static void curs_visibility(int v)
100
{
1610 palkovsky 101
    async_msg(fb_info.phone, FB_CURSOR_VISIBILITY, v);
1552 palkovsky 102
}
103
 
104
static void curs_goto(int row, int col)
105
{
1610 palkovsky 106
    async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
1552 palkovsky 107
 
108
}
109
 
110
static void set_style(style_t *style)
111
{
1610 palkovsky 112
    async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color, style->bg_color);
1552 palkovsky 113
}
114
 
115
static void set_style_col(int fgcolor, int bgcolor)
116
{
1610 palkovsky 117
    async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
1552 palkovsky 118
}
119
 
120
static void prtchr(char c, int row, int col)
121
{
1610 palkovsky 122
    async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
1552 palkovsky 123
 
124
}
125
 
1497 cejka 126
/** Check key and process special keys.
127
 *
128
 * */
129
static void write_char(int console, char key)
130
{
131
    screenbuffer_t *scr = &(connections[console].screenbuffer);
132
 
133
    switch (key) {
134
        case '\n':
135
            scr->position_y += 1;
136
            scr->position_x =  0;
137
            break;
138
        case '\r':
139
            break;
140
        case '\t':
141
            scr->position_x += 8;
142
            scr->position_x -= scr->position_x % 8;
143
            break;
144
        case '\b':
145
            if (scr->position_x == 0)
146
                break;
147
 
148
            scr->position_x--;
149
 
1552 palkovsky 150
            if (console == active_console)
151
                prtchr(' ', scr->position_y, scr->position_x);
1497 cejka 152
 
153
            screenbuffer_putchar(scr, ' ');
154
 
155
            break;
156
        default:   
1552 palkovsky 157
            if (console == active_console)
158
                prtchr(key, scr->position_y, scr->position_x);
1497 cejka 159
 
160
            screenbuffer_putchar(scr, key);
161
            scr->position_x++;
162
    }
163
 
164
    scr->position_y += (scr->position_x >= scr->size_x);
165
 
166
    if (scr->position_y >= scr->size_y) {
167
        scr->position_y = scr->size_y - 1;
168
        screenbuffer_clear_line(scr, scr->top_line++);
1518 palkovsky 169
        if (console == active_console)
1610 palkovsky 170
            async_msg(fb_info.phone, FB_SCROLL, 1);
1497 cejka 171
    }
172
 
173
    scr->position_x = scr->position_x % scr->size_x;
174
 
1552 palkovsky 175
    if (console == active_console)
176
        curs_goto(scr->position_y, scr->position_x);
1504 cejka 177
 
1497 cejka 178
}
179
 
1552 palkovsky 180
/** Save current screen to pixmap, draw old pixmap
181
 *
182
 * @param oldpixmap Old pixmap
183
 * @return ID of pixmap of current screen
184
 */
185
static int switch_screens(int oldpixmap)
186
{
187
    int newpmap;
188
 
189
    /* Save screen */
1610 palkovsky 190
    newpmap = async_req(fb_info.phone, FB_VP2PIXMAP, 0, NULL);
1552 palkovsky 191
    if (newpmap < 0)
192
        return -1;
1497 cejka 193
 
1552 palkovsky 194
    if (oldpixmap != -1) {
195
        /* Show old screen */
1610 palkovsky 196
        async_msg_2(fb_info.phone, FB_VP_DRAW_PIXMAP, 0, oldpixmap);
1552 palkovsky 197
        /* Drop old pixmap */
1610 palkovsky 198
        async_msg(fb_info.phone, FB_DROP_PIXMAP, oldpixmap);
1552 palkovsky 199
    }
200
 
201
    return newpmap;
202
}
203
 
204
/** Switch to new console */
205
static void change_console(int newcons)
206
{
207
    connection_t *conn;
208
    static int console_pixmap = -1;
209
    int i, j;
1578 cejka 210
    keyfield_t *field;
211
    style_t *style;
1552 palkovsky 212
    char c;
213
 
214
    if (newcons == active_console)
215
        return;
216
 
1555 palkovsky 217
    if (newcons == KERNEL_CONSOLE) {
218
        if (active_console == KERNEL_CONSOLE)
1552 palkovsky 219
            return;
1555 palkovsky 220
        active_console = KERNEL_CONSOLE;
1552 palkovsky 221
        curs_visibility(0);
222
 
223
        if (kernel_pixmap == -1) {
224
            /* store/restore unsupported */
225
            set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
226
            clrscr();
227
        } else {
228
            gcons_in_kernel();
229
            console_pixmap = switch_screens(kernel_pixmap);
230
            kernel_pixmap = -1;
231
        }
232
 
233
        __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
234
        return;
235
    }
236
 
237
    if (console_pixmap != -1) {
238
        kernel_pixmap = switch_screens(console_pixmap);
239
        console_pixmap = -1;
240
    }
241
    active_console = newcons;
242
    gcons_change_console(newcons);
243
    conn = &connections[active_console];
244
 
1563 palkovsky 245
    set_style(&conn->screenbuffer.style);
1578 cejka 246
    curs_visibility(0);
1552 palkovsky 247
    if (interbuffer) {
248
        for (i = 0; i < conn->screenbuffer.size_x; i++)
249
            for (j = 0; j < conn->screenbuffer.size_y; j++)
250
                interbuffer[i + j*conn->screenbuffer.size_x] = *get_field_at(&(conn->screenbuffer),i, j);
1563 palkovsky 251
        /* This call can preempt, but we are already at the end */
1610 palkovsky 252
        j = async_req_2(fb_info.phone, FB_DRAW_TEXT_DATA, 0, 0, NULL, NULL);       
1578 cejka 253
    };
254
 
255
    if ((!interbuffer) || (j != 0)){
256
        set_style(&conn->screenbuffer.style);
1552 palkovsky 257
        clrscr();
1578 cejka 258
        style = &conn->screenbuffer.style;
259
 
260
        for (j = 0; j < conn->screenbuffer.size_y; j++)
261
            for (i = 0; i < conn->screenbuffer.size_x; i++) {
262
                field = get_field_at(&(conn->screenbuffer),i, j);
263
                if (!style_same(*style, field->style))
264
                    set_style(&field->style);
265
                style = &field->style;
266
                if ((field->character == ' ') && (style_same(field->style, conn->screenbuffer.style)))
267
                    continue;
268
 
269
                prtchr(field->character, j, i);
1552 palkovsky 270
            }
271
    }
1578 cejka 272
 
1630 palkovsky 273
    curs_goto(conn->screenbuffer.position_y, conn->screenbuffer.position_x);
1578 cejka 274
    curs_visibility(conn->screenbuffer.is_cursor_visible);
1552 palkovsky 275
}
276
 
1526 cejka 277
/** Handler for keyboard */
1453 palkovsky 278
static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
1445 cejka 279
{
1453 palkovsky 280
    ipc_callid_t callid;
1445 cejka 281
    ipc_call_t call;
1453 palkovsky 282
    int retval;
1560 vana 283
    int c;
1489 palkovsky 284
    connection_t *conn;
1506 cejka 285
 
1453 palkovsky 286
    /* Ignore parameters, the connection is alread opened */
287
    while (1) {
288
        callid = async_get_call(&call);
289
        switch (IPC_GET_METHOD(call)) {
290
        case IPC_M_PHONE_HUNGUP:
291
            ipc_answer_fast(callid,0,0,0);
292
            /* TODO: Handle hangup */
293
            return;
294
        case KBD_PUSHCHAR:
295
            /* got key from keyboard driver */
1465 cejka 296
 
1453 palkovsky 297
            retval = 0;
1520 cejka 298
            c = IPC_GET_ARG1(call);
1453 palkovsky 299
            /* switch to another virtual console */
1481 cejka 300
 
1489 palkovsky 301
            conn = &connections[active_console];
1490 palkovsky 302
//          if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
1560 vana 303
            if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
1610 palkovsky 304
                async_serialize_start();
1560 vana 305
                if (c == 0x112)
1555 palkovsky 306
                    change_console(KERNEL_CONSOLE);
1552 palkovsky 307
                else
1560 vana 308
                    change_console(c - 0x101);
1610 palkovsky 309
                async_serialize_end();
1453 palkovsky 310
                break;
311
            }
1481 cejka 312
 
313
            /* if client is awaiting key, send it */
1489 palkovsky 314
            if (conn->keyrequest_counter > 0) {    
315
                conn->keyrequest_counter--;
316
                ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
1481 cejka 317
                break;
318
            }
319
 
320
            /*FIXME: else store key to its buffer */
1489 palkovsky 321
            keybuffer_push(&conn->keybuffer, c);
1476 cejka 322
 
1453 palkovsky 323
            break;
324
        default:
1459 palkovsky 325
            retval = ENOENT;
1610 palkovsky 326
        }
1459 palkovsky 327
        ipc_answer_fast(callid, retval, 0, 0);
1453 palkovsky 328
    }
329
}
330
 
331
/** Default thread for new connections */
1518 palkovsky 332
static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
1453 palkovsky 333
{
1445 cejka 334
    ipc_callid_t callid;
1453 palkovsky 335
    ipc_call_t call;
336
    int consnum;
1521 cejka 337
    ipcarg_t arg1, arg2;
1592 palkovsky 338
    connection_t *conn;
1453 palkovsky 339
 
1574 palkovsky 340
    if ((consnum = find_free_connection()) == -1) {
1453 palkovsky 341
        ipc_answer_fast(iid,ELIMIT,0,0);
342
        return;
343
    }
1592 palkovsky 344
    conn = &connections[consnum];
1610 palkovsky 345
    conn->used = 1;
1555 palkovsky 346
 
1610 palkovsky 347
    async_serialize_start();
1555 palkovsky 348
    gcons_notify_connect(consnum);
1592 palkovsky 349
    conn->client_phone = IPC_GET_ARG3(call);
350
    screenbuffer_clear(&conn->screenbuffer);
1497 cejka 351
 
1453 palkovsky 352
    /* Accept the connection */
353
    ipc_answer_fast(iid,0,0,0);
1610 palkovsky 354
 
1453 palkovsky 355
    while (1) {
1610 palkovsky 356
        async_serialize_end();
1453 palkovsky 357
        callid = async_get_call(&call);
1610 palkovsky 358
        async_serialize_start();
359
 
1521 cejka 360
        arg1 = arg2 = 0;
1453 palkovsky 361
        switch (IPC_GET_METHOD(call)) {
362
        case IPC_M_PHONE_HUNGUP:
1592 palkovsky 363
            gcons_notify_disconnect(consnum);
1610 palkovsky 364
 
1592 palkovsky 365
            /* Answer all pending requests */
366
            while (conn->keyrequest_counter > 0) {     
367
                conn->keyrequest_counter--;
368
                ipc_answer_fast(fifo_pop(conn->keyrequests), ENOENT, 0, 0);
369
                break;
370
            }
371
 
372
            /* Commit hangup */
1453 palkovsky 373
            ipc_answer_fast(callid, 0,0,0);
1616 palkovsky 374
            conn->used = 0;
1610 palkovsky 375
            async_serialize_end();
1453 palkovsky 376
            return;
377
        case CONSOLE_PUTCHAR:
1497 cejka 378
            write_char(consnum, IPC_GET_ARG1(call));
1528 palkovsky 379
            gcons_notify_char(consnum);
1453 palkovsky 380
            break;
1476 cejka 381
        case CONSOLE_CLEAR:
1487 cejka 382
            /* Send message to fb */
383
            if (consnum == active_console) {
1610 palkovsky 384
                async_msg(fb_info.phone, FB_CLEAR, 0);
1487 cejka 385
            }
386
 
1592 palkovsky 387
            screenbuffer_clear(&conn->screenbuffer);
1487 cejka 388
 
1476 cejka 389
            break;
390
        case CONSOLE_GOTO:
1487 cejka 391
 
1592 palkovsky 392
            screenbuffer_goto(&conn->screenbuffer, IPC_GET_ARG2(call), IPC_GET_ARG1(call));
1567 palkovsky 393
            if (consnum == active_console)
394
                curs_goto(IPC_GET_ARG1(call),IPC_GET_ARG2(call));
1487 cejka 395
 
1476 cejka 396
            break;
1523 cejka 397
 
1521 cejka 398
        case CONSOLE_GETSIZE:
1528 palkovsky 399
            arg1 = fb_info.rows;
400
            arg2 = fb_info.cols;
1521 cejka 401
            break;
1523 cejka 402
        case CONSOLE_FLUSH:
1610 palkovsky 403
            async_req_2(fb_info.phone, FB_FLUSH, 0, 0, NULL, NULL);    
1523 cejka 404
            break;
1525 cejka 405
        case CONSOLE_SET_STYLE:
406
 
407
            arg1 = IPC_GET_ARG1(call);
408
            arg2 = IPC_GET_ARG2(call);
1592 palkovsky 409
            screenbuffer_set_style(&conn->screenbuffer,arg1, arg2);
1525 cejka 410
            if (consnum == active_console)
1552 palkovsky 411
                set_style_col(arg1, arg2);
1525 cejka 412
 
413
            break;
1575 cejka 414
        case CONSOLE_CURSOR_VISIBILITY:
415
            arg1 = IPC_GET_ARG1(call);
1592 palkovsky 416
            conn->screenbuffer.is_cursor_visible = arg1;
1575 cejka 417
            if (consnum == active_console)
418
                curs_visibility(arg1);
419
            break;
1453 palkovsky 420
        case CONSOLE_GETCHAR:
1592 palkovsky 421
            if (keybuffer_empty(&conn->keybuffer)) {
1481 cejka 422
                /* buffer is empty -> store request */
1592 palkovsky 423
                if (conn->keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {     
424
                    fifo_push(conn->keyrequests, callid);
425
                    conn->keyrequest_counter++;
1481 cejka 426
                } else {
427
                    /* no key available and too many requests => fail */
428
                    ipc_answer_fast(callid, ELIMIT, 0, 0);
429
                }
430
                continue;
1453 palkovsky 431
            };
1592 palkovsky 432
            keybuffer_pop(&conn->keybuffer, (int *)&arg1);
1465 cejka 433
 
1453 palkovsky 434
            break;
435
        }
1521 cejka 436
        ipc_answer_fast(callid, 0, arg1, arg2);
1453 palkovsky 437
    }
438
}
439
 
440
int main(int argc, char *argv[])
441
{
442
    ipcarg_t phonehash;
1451 cejka 443
    int kbd_phone, fb_phone;
1445 cejka 444
    ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
1451 cejka 445
    int i;
1490 palkovsky 446
 
447
    async_set_client_connection(client_connection);
1445 cejka 448
 
449
    /* Connect to keyboard driver */
450
 
1451 cejka 451
    while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
1453 palkovsky 452
        usleep(10000);
1445 cejka 453
    };
454
 
1453 palkovsky 455
    if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
1445 cejka 456
        return -1;
457
    };
458
 
459
    /* Connect to framebuffer driver */
460
 
1487 cejka 461
    while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
462
        usleep(10000);
463
    }
1552 palkovsky 464
 
465
    /* Save old kernel screen */
466
    kernel_pixmap = switch_screens(-1);
1522 palkovsky 467
 
468
    /* Initialize gcons */
469
    gcons_init(fb_info.phone);
470
    /* Synchronize, the gcons can have something in queue */
1610 palkovsky 471
    async_req(fb_info.phone, FB_FLUSH, 0, NULL);
1522 palkovsky 472
 
1487 cejka 473
 
1640 palkovsky 474
    async_req_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
1552 palkovsky 475
    set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
476
    clrscr();
1487 cejka 477
 
478
    /* Init virtual consoles */
1451 cejka 479
    for (i = 0; i < CONSOLE_COUNT; i++) {
480
        connections[i].used = 0;
481
        keybuffer_init(&(connections[i].keybuffer));
1481 cejka 482
 
483
        connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
484
        connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
485
        connections[i].keyrequest_counter = 0;
1487 cejka 486
 
487
        if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
488
            /*FIXME: handle error */
489
            return -1;
490
        }
1451 cejka 491
    }
1574 palkovsky 492
    connections[KERNEL_CONSOLE].used = 1;
1445 cejka 493
 
1512 cejka 494
    if ((interbuffer = mmap(NULL, sizeof(keyfield_t) * fb_info.cols * fb_info.rows , PROTO_READ|PROTO_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, 0 ,0 )) != NULL) {
1640 palkovsky 495
        if (async_req_3(fb_info.phone, IPC_M_AS_AREA_SEND, (ipcarg_t)interbuffer, 0, AS_AREA_READ, NULL, NULL, NULL) != 0) {
1512 cejka 496
            munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
497
            interbuffer = NULL;
498
        }
499
    }
1520 cejka 500
 
1506 cejka 501
    async_new_connection(phonehash, 0, NULL, keyboard_events);
502
 
1575 cejka 503
    curs_goto(0,0);
504
    curs_visibility(connections[active_console].screenbuffer.is_cursor_visible);
1497 cejka 505
 
1518 palkovsky 506
    /* Register at NS */
1453 palkovsky 507
    if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
1445 cejka 508
        return -1;
509
    };
510
 
1453 palkovsky 511
    async_manager();
1451 cejka 512
 
1445 cejka 513
    return 0;  
514
}
1520 cejka 515