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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
 
1481 cejka 44
#define MAX_KEYREQUESTS_BUFFERED 32
1451 cejka 45
 
1445 cejka 46
#define NAME "CONSOLE"
47
 
1512 cejka 48
int active_console = 0;
1453 palkovsky 49
 
1487 cejka 50
struct {
51
    int phone;      /**< Framebuffer phone */
1506 cejka 52
    ipcarg_t rows;      /**< Framebuffer rows */
53
    ipcarg_t cols;      /**< Framebuffer columns */
1487 cejka 54
} fb_info;
55
 
1451 cejka 56
typedef struct {
57
    keybuffer_t keybuffer;
1481 cejka 58
    FIFO_CREATE_STATIC(keyrequests, ipc_callid_t , MAX_KEYREQUESTS_BUFFERED);
59
    int keyrequest_counter;
1451 cejka 60
    int client_phone;
61
    int used;
1487 cejka 62
    screenbuffer_t screenbuffer;
1451 cejka 63
} connection_t;
64
 
1506 cejka 65
 
66
 
1451 cejka 67
connection_t connections[CONSOLE_COUNT];
1512 cejka 68
keyfield_t *interbuffer = NULL;
69
 
1451 cejka 70
static int find_free_connection()
71
{
72
    int i = 0;
73
 
74
    while (i < CONSOLE_COUNT) {
75
        if (connections[i].used == 0)
76
            return i;
77
        ++i;
78
    }
79
    return CONSOLE_COUNT;
80
}
81
 
82
 
83
static int find_connection(int client_phone)
84
{
85
    int i = 0;
86
 
87
    while (i < CONSOLE_COUNT) {
88
        if (connections[i].client_phone == client_phone)
89
            return i;
90
        ++i;
91
    }
92
    return  CONSOLE_COUNT;
93
}
94
 
1497 cejka 95
/** Check key and process special keys.
96
 *
97
 * */
98
static void write_char(int console, char key)
99
{
100
    screenbuffer_t *scr = &(connections[console].screenbuffer);
101
 
102
    switch (key) {
103
        case '\n':
104
            scr->position_y += 1;
105
            scr->position_x =  0;
106
            break;
107
        case '\r':
108
            break;
109
        case '\t':
110
            scr->position_x += 8;
111
            scr->position_x -= scr->position_x % 8;
112
            break;
113
        case '\b':
114
            if (scr->position_x == 0)
115
                break;
116
 
117
            scr->position_x--;
118
 
119
            if (console == active_console) {
1518 palkovsky 120
                nsend_call_3(fb_info.phone, FB_PUTCHAR, ' ', scr->position_y, scr->position_x);
1497 cejka 121
            }
122
 
123
            screenbuffer_putchar(scr, ' ');
124
 
125
            break;
126
        default:   
127
            if (console == active_console) {
1518 palkovsky 128
                nsend_call_3(fb_info.phone, FB_PUTCHAR, key, scr->position_y, scr->position_x);
1497 cejka 129
            }
130
 
131
            screenbuffer_putchar(scr, key);
132
            scr->position_x++;
133
    }
134
 
135
    scr->position_y += (scr->position_x >= scr->size_x);
136
 
137
    if (scr->position_y >= scr->size_y) {
138
        scr->position_y = scr->size_y - 1;
139
        screenbuffer_clear_line(scr, scr->top_line++);
1518 palkovsky 140
        if (console == active_console)
141
            nsend_call(fb_info.phone, FB_SCROLL, 1);
1497 cejka 142
    }
143
 
144
    scr->position_x = scr->position_x % scr->size_x;
145
 
1504 cejka 146
    if (console == active_console) 
1518 palkovsky 147
        send_call_2(fb_info.phone, FB_CURSOR_GOTO, scr->position_y, scr->position_x);
1504 cejka 148
 
1497 cejka 149
}
150
 
151
 
1453 palkovsky 152
/* Handler for keyboard */
153
static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
1445 cejka 154
{
1453 palkovsky 155
    ipc_callid_t callid;
1445 cejka 156
    ipc_call_t call;
1453 palkovsky 157
    int retval;
1487 cejka 158
    int i, j;
1489 palkovsky 159
    char c,d;
160
    connection_t *conn;
1506 cejka 161
 
1453 palkovsky 162
    /* Ignore parameters, the connection is alread opened */
163
    while (1) {
164
        callid = async_get_call(&call);
165
        switch (IPC_GET_METHOD(call)) {
166
        case IPC_M_PHONE_HUNGUP:
167
            ipc_answer_fast(callid,0,0,0);
168
            /* TODO: Handle hangup */
169
            return;
170
        case KBD_PUSHCHAR:
171
            /* got key from keyboard driver */
1465 cejka 172
 
1453 palkovsky 173
            retval = 0;
1520 cejka 174
            c = IPC_GET_ARG1(call);
1453 palkovsky 175
            /* switch to another virtual console */
1481 cejka 176
 
1489 palkovsky 177
            conn = &connections[active_console];
1490 palkovsky 178
//          if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
1520 cejka 179
            if ((c >= '0') && (c < '0' + CONSOLE_COUNT)) {
1517 cejka 180
 
1520 cejka 181
                if (c == '0') {
1517 cejka 182
                    /* switch to kernel console*/
1520 cejka 183
                    sync_send_2(fb_info.phone, FB_CURSOR_VISIBILITY, 0, 0, NULL, NULL);
184
                    nsend_call_2(fb_info.phone, FB_SET_STYLE, DEFAULT_FOREGROUND_COLOR, DEFAULT_BACKGROUND_COLOR);
185
                    nsend_call(fb_info.phone, FB_CLEAR, 0);
186
                    /* FIXME: restore kernel console */
1517 cejka 187
                     __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
1520 cejka 188
                     break;
1517 cejka 189
 
190
                } else {
1520 cejka 191
                    c = c - '1';
192
                    if (c == active_console)
193
                        break;
1517 cejka 194
                    active_console = c;
195
                }
196
 
1489 palkovsky 197
                conn = &connections[active_console];
198
 
1518 palkovsky 199
                nsend_call(fb_info.phone, FB_CURSOR_VISIBILITY, 0);
1512 cejka 200
 
201
                if (interbuffer) {
1516 cejka 202
                    for (i = 0; i < conn->screenbuffer.size_x; i++)
203
                        for (j = 0; j < conn->screenbuffer.size_y; j++)
204
                            interbuffer[i + j*conn->screenbuffer.size_x] = *get_field_at(&(conn->screenbuffer),i, j);
205
 
1517 cejka 206
                    sync_send_2(fb_info.phone, FB_DRAW_TEXT_DATA, 0, 0, NULL, NULL);       
1512 cejka 207
                } else {
1518 palkovsky 208
                    nsend_call(fb_info.phone, FB_CLEAR, 0);
1497 cejka 209
 
1512 cejka 210
 
211
                    for (i = 0; i < conn->screenbuffer.size_x; i++)
212
                        for (j = 0; j < conn->screenbuffer.size_y; j++) {
213
                            d = get_field_at(&(conn->screenbuffer),i, j)->character;
214
                            if (d && d != ' ')
1518 palkovsky 215
                                nsend_call_3(fb_info.phone, FB_PUTCHAR, d, j, i);
1512 cejka 216
                        }
1499 cejka 217
 
1512 cejka 218
                }
1518 palkovsky 219
                nsend_call_2(fb_info.phone, FB_CURSOR_GOTO, conn->screenbuffer.position_y, conn->screenbuffer.position_x);
220
                nsend_call_2(fb_info.phone, FB_SET_STYLE, conn->screenbuffer.style.fg_color, \
221
                        conn->screenbuffer.style.bg_color);
222
                send_call(fb_info.phone, FB_CURSOR_VISIBILITY, 1);
1487 cejka 223
 
1453 palkovsky 224
                break;
225
            }
1481 cejka 226
 
227
            /* if client is awaiting key, send it */
1489 palkovsky 228
            if (conn->keyrequest_counter > 0) {    
229
                conn->keyrequest_counter--;
230
                ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
1481 cejka 231
                break;
232
            }
233
 
234
            /*FIXME: else store key to its buffer */
1489 palkovsky 235
            keybuffer_push(&conn->keybuffer, c);
1476 cejka 236
 
1453 palkovsky 237
            break;
238
        default:
1459 palkovsky 239
            retval = ENOENT;
1453 palkovsky 240
        }      
1459 palkovsky 241
        ipc_answer_fast(callid, retval, 0, 0);
1453 palkovsky 242
    }
243
}
244
 
245
/** Default thread for new connections */
1518 palkovsky 246
static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
1453 palkovsky 247
{
1445 cejka 248
    ipc_callid_t callid;
1453 palkovsky 249
    ipc_call_t call;
250
    int consnum;
251
    ipcarg_t arg1;
252
 
253
    if ((consnum = find_free_connection()) == CONSOLE_COUNT) {
254
        ipc_answer_fast(iid,ELIMIT,0,0);
255
        return;
256
    }
1497 cejka 257
 
1453 palkovsky 258
    connections[consnum].used = 1;
259
    connections[consnum].client_phone = IPC_GET_ARG3(call);
1487 cejka 260
    screenbuffer_clear(&(connections[consnum].screenbuffer));
1497 cejka 261
 
1453 palkovsky 262
    /* Accept the connection */
263
    ipc_answer_fast(iid,0,0,0);
264
 
265
    while (1) {
266
        callid = async_get_call(&call);
267
        switch (IPC_GET_METHOD(call)) {
268
        case IPC_M_PHONE_HUNGUP:
269
            /* TODO */
270
            ipc_answer_fast(callid, 0,0,0);
271
            return;
272
        case CONSOLE_PUTCHAR:
1497 cejka 273
            write_char(consnum, IPC_GET_ARG1(call));
1453 palkovsky 274
            break;
1476 cejka 275
        case CONSOLE_CLEAR:
1487 cejka 276
            /* Send message to fb */
277
            if (consnum == active_console) {
1518 palkovsky 278
                send_call(fb_info.phone, FB_CLEAR, 0);
1487 cejka 279
            }
280
 
281
            screenbuffer_clear(&(connections[consnum].screenbuffer));
282
 
1476 cejka 283
            break;
284
        case CONSOLE_GOTO:
1487 cejka 285
 
286
            screenbuffer_goto(&(connections[consnum].screenbuffer), IPC_GET_ARG1(call), IPC_GET_ARG2(call));
287
 
1476 cejka 288
            break;
289
 
1453 palkovsky 290
        case CONSOLE_GETCHAR:
1481 cejka 291
            if (keybuffer_empty(&(connections[consnum].keybuffer))) {
292
                /* buffer is empty -> store request */
293
                if (connections[consnum].keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {      
294
                    fifo_push(connections[consnum].keyrequests, callid);
295
                    connections[consnum].keyrequest_counter++;
296
                } else {
297
                    /* no key available and too many requests => fail */
298
                    ipc_answer_fast(callid, ELIMIT, 0, 0);
299
                }
300
                continue;
1453 palkovsky 301
            };
1476 cejka 302
            keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);
1465 cejka 303
 
1453 palkovsky 304
            break;
305
        }
1465 cejka 306
        ipc_answer_fast(callid, 0, arg1, 0);
1453 palkovsky 307
    }
308
}
309
 
310
int main(int argc, char *argv[])
311
{
312
    ipcarg_t phonehash;
1451 cejka 313
    int kbd_phone, fb_phone;
1445 cejka 314
    ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
1451 cejka 315
    int i;
1490 palkovsky 316
 
317
    async_set_client_connection(client_connection);
1445 cejka 318
 
319
    /* Connect to keyboard driver */
320
 
1451 cejka 321
    while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
1453 palkovsky 322
        usleep(10000);
1445 cejka 323
    };
324
 
1453 palkovsky 325
    if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
1445 cejka 326
        return -1;
327
    };
328
 
329
    /* Connect to framebuffer driver */
330
 
1487 cejka 331
    while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
332
        usleep(10000);
333
    }
334
 
335
    ipc_call_sync_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
1518 palkovsky 336
    nsend_call_2(fb_info.phone, FB_SET_STYLE, DEFAULT_FOREGROUND_COLOR, DEFAULT_BACKGROUND_COLOR);
1520 cejka 337
    nsend_call(fb_info.phone, FB_CLEAR, 0);
1487 cejka 338
 
339
    /* Init virtual consoles */
1451 cejka 340
    for (i = 0; i < CONSOLE_COUNT; i++) {
341
        connections[i].used = 0;
342
        keybuffer_init(&(connections[i].keybuffer));
1481 cejka 343
 
344
        connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
345
        connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
346
        connections[i].keyrequest_counter = 0;
1487 cejka 347
 
348
        if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
349
            /*FIXME: handle error */
350
            return -1;
351
        }
1451 cejka 352
    }
1445 cejka 353
 
1512 cejka 354
    if ((interbuffer = mmap(NULL, sizeof(keyfield_t) * fb_info.cols * fb_info.rows , PROTO_READ|PROTO_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, 0 ,0 )) != NULL) {
355
        if (ipc_call_sync_3(fb_info.phone, IPC_M_AS_AREA_SEND, (ipcarg_t)interbuffer, 0, AS_AREA_READ | AS_AREA_CACHEABLE, NULL, NULL, NULL) != 0) {
356
            munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
357
            interbuffer = NULL;
358
        }
359
    }
1520 cejka 360
 
361
    /* FIXME: save kernel console screen */
1512 cejka 362
 
1506 cejka 363
    async_new_connection(phonehash, 0, NULL, keyboard_events);
364
 
1518 palkovsky 365
    nsend_call_2(fb_info.phone, FB_CURSOR_GOTO, 0, 0);
1520 cejka 366
    nsend_call(fb_info.phone, FB_CURSOR_VISIBILITY, 1);
1497 cejka 367
 
1518 palkovsky 368
    /* Register at NS */
1453 palkovsky 369
    if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
1445 cejka 370
        return -1;
371
    };
372
 
1453 palkovsky 373
    async_manager();
1451 cejka 374
 
1445 cejka 375
    return 0;  
376
}
1520 cejka 377