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1445 cejka 1
/*
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 * Copyright (C) 2006 Josef Cejka
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 * All rights reserved.
4
 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
8
 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * 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>
1445 cejka 42
 
1497 cejka 43
#define CONSOLE_COUNT 12 
1481 cejka 44
#define MAX_KEYREQUESTS_BUFFERED 32
1451 cejka 45
 
1445 cejka 46
#define NAME "CONSOLE"
47
 
1476 cejka 48
int active_console = 1;
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];
68
 
69
static int find_free_connection() 
70
{
71
	int i = 0;
72
 
73
	while (i < CONSOLE_COUNT) {
74
		if (connections[i].used == 0)
75
			return i;
76
		++i;
77
	}
78
	return CONSOLE_COUNT;
79
}
80
 
81
 
82
static int find_connection(int client_phone) 
83
{
84
	int i = 0;
85
 
86
	while (i < CONSOLE_COUNT) {
87
		if (connections[i].client_phone == client_phone)
88
			return i;
89
		++i;
90
	}
91
	return  CONSOLE_COUNT;
92
}
93
 
1497 cejka 94
/** Check key and process special keys. 
95
 *
96
 * */
97
static void write_char(int console, char key)
98
{
99
	screenbuffer_t *scr = &(connections[console].screenbuffer);
100
 
101
	switch (key) {
102
		case '\n':
103
			scr->position_y += 1;
104
			scr->position_x =  0;
105
			break;
106
		case '\r':
107
			break;
108
		case '\t':
109
			scr->position_x += 8;
110
			scr->position_x -= scr->position_x % 8; 
111
			break;
112
		case '\b':
113
			if (scr->position_x == 0) 
114
				break;
115
 
116
			scr->position_x--;
117
 
118
			if (console == active_console) {
119
				ipc_call_async_3(fb_info.phone, FB_PUTCHAR, ' ', scr->position_y, scr->position_x, NULL, NULL);
120
			}
121
 
122
			screenbuffer_putchar(scr, ' ');
123
 
124
			break;
125
		default:	
126
			if (console == active_console) {
127
				ipc_call_async_3(fb_info.phone, FB_PUTCHAR, key, scr->position_y, scr->position_x, NULL, NULL);
128
			}
129
 
130
			screenbuffer_putchar(scr, key);
131
			scr->position_x++;
132
	}
133
 
134
	scr->position_y += (scr->position_x >= scr->size_x);
135
 
136
	if (scr->position_y >= scr->size_y) {
137
		scr->position_y = scr->size_y - 1;
138
		screenbuffer_clear_line(scr, scr->top_line++);
139
		ipc_call_async(fb_info.phone, FB_SCROLL, 1, NULL, NULL);
140
	}
141
 
142
	scr->position_x = scr->position_x % scr->size_x;
143
 
1504 cejka 144
	if (console == active_console)	
145
		ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, scr->position_y, scr->position_x, NULL, NULL);
146
 
1497 cejka 147
}
148
 
149
 
1453 palkovsky 150
/* Handler for keyboard */
151
static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
1445 cejka 152
{
1453 palkovsky 153
	ipc_callid_t callid;
1445 cejka 154
	ipc_call_t call;
1453 palkovsky 155
	int retval;
1487 cejka 156
	int i, j;
1489 palkovsky 157
	char c,d;
158
	connection_t *conn;
1506 cejka 159
	keyfield_t *interbuffer = NULL;
1453 palkovsky 160
 
1506 cejka 161
//	interbuffer = mmap(,, PROTO_READ|PROTO_WRITE, MAP_ANONYMOUS, , );	
162
 
1453 palkovsky 163
	/* Ignore parameters, the connection is alread opened */
164
	while (1) {
165
		callid = async_get_call(&call);
166
		switch (IPC_GET_METHOD(call)) {
167
		case IPC_M_PHONE_HUNGUP:
168
			ipc_answer_fast(callid,0,0,0);
169
			/* TODO: Handle hangup */
170
			return;
171
		case KBD_PUSHCHAR:
172
			/* got key from keyboard driver */
1465 cejka 173
 
1453 palkovsky 174
			retval = 0;
1476 cejka 175
			c = IPC_GET_ARG1(call);
1453 palkovsky 176
			/* switch to another virtual console */
1481 cejka 177
 
1489 palkovsky 178
			conn = &connections[active_console];
1490 palkovsky 179
//			if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
180
			if ((c >= '1') && (c < '1' + CONSOLE_COUNT)) {
1487 cejka 181
				/*FIXME: draw another console content from buffer */
1499 cejka 182
				if (c - '1' == active_console)
1497 cejka 183
						break;
1490 palkovsky 184
				active_console = c - '1';
1489 palkovsky 185
				conn = &connections[active_console];
186
 
187
				ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 0, NULL, NULL); 
1487 cejka 188
				ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
1497 cejka 189
 
1489 palkovsky 190
				for (i = 0; i < conn->screenbuffer.size_x; i++)
191
					for (j = 0; j < conn->screenbuffer.size_y; j++) {
192
						d = get_field_at(&(conn->screenbuffer),i, j)->character;
193
						if (d && d != ' ')
194
							ipc_call_async_3(fb_info.phone, FB_PUTCHAR, d, j, i, NULL, NULL);
195
					}
1499 cejka 196
 
1489 palkovsky 197
				ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, conn->screenbuffer.position_y, conn->screenbuffer.position_x, NULL, NULL); 
198
				ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL, NULL); 
1487 cejka 199
 
1453 palkovsky 200
				break;
201
			}
1481 cejka 202
 
203
			/* if client is awaiting key, send it */
1489 palkovsky 204
			if (conn->keyrequest_counter > 0) {		
205
				conn->keyrequest_counter--;
206
				ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
1481 cejka 207
				break;
208
			}
209
 
210
			/*FIXME: else store key to its buffer */
1489 palkovsky 211
			keybuffer_push(&conn->keybuffer, c);
1476 cejka 212
 
1453 palkovsky 213
			break;
214
		default:
1459 palkovsky 215
			retval = ENOENT;
1453 palkovsky 216
		}		
1459 palkovsky 217
		ipc_answer_fast(callid, retval, 0, 0);
1453 palkovsky 218
	}
219
}
220
 
221
/** Default thread for new connections */
222
void client_connection(ipc_callid_t iid, ipc_call_t *icall)
223
{
1445 cejka 224
	ipc_callid_t callid;
1453 palkovsky 225
	ipc_call_t call;
226
	int consnum;
227
	ipcarg_t arg1;
228
 
229
	if ((consnum = find_free_connection()) == CONSOLE_COUNT) {
230
		ipc_answer_fast(iid,ELIMIT,0,0);
231
		return;
232
	}
1497 cejka 233
 
1453 palkovsky 234
	connections[consnum].used = 1;
235
	connections[consnum].client_phone = IPC_GET_ARG3(call);
1487 cejka 236
	screenbuffer_clear(&(connections[consnum].screenbuffer));
1497 cejka 237
 
1453 palkovsky 238
	/* Accept the connection */
239
	ipc_answer_fast(iid,0,0,0);
240
 
241
	while (1) {
242
		callid = async_get_call(&call);
243
		switch (IPC_GET_METHOD(call)) {
244
		case IPC_M_PHONE_HUNGUP:
245
			/* TODO */
246
			ipc_answer_fast(callid, 0,0,0);
247
			return;
248
		case CONSOLE_PUTCHAR:
1497 cejka 249
			write_char(consnum, IPC_GET_ARG1(call));
1453 palkovsky 250
			break;
1476 cejka 251
		case CONSOLE_CLEAR:
1487 cejka 252
			/* Send message to fb */
253
			if (consnum == active_console) {
254
				ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL); 
255
			}
256
 
257
			screenbuffer_clear(&(connections[consnum].screenbuffer));
258
 
1476 cejka 259
			break;
260
		case CONSOLE_GOTO:
1487 cejka 261
 
262
			screenbuffer_goto(&(connections[consnum].screenbuffer), IPC_GET_ARG1(call), IPC_GET_ARG2(call));
263
 
1476 cejka 264
			break;
265
 
1453 palkovsky 266
		case CONSOLE_GETCHAR:
1481 cejka 267
			if (keybuffer_empty(&(connections[consnum].keybuffer))) {
268
				/* buffer is empty -> store request */
269
				if (connections[consnum].keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {		
270
					fifo_push(connections[consnum].keyrequests, callid);
271
					connections[consnum].keyrequest_counter++;
272
				} else {
273
					/* no key available and too many requests => fail */
274
					ipc_answer_fast(callid, ELIMIT, 0, 0);
275
				}
276
				continue;
1453 palkovsky 277
			};
1476 cejka 278
			keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);
1465 cejka 279
 
1453 palkovsky 280
			break;
281
		}
1465 cejka 282
		ipc_answer_fast(callid, 0, arg1, 0);
1453 palkovsky 283
	}
284
}
285
 
286
int main(int argc, char *argv[])
287
{
288
	ipcarg_t phonehash;
1451 cejka 289
	int kbd_phone, fb_phone;
1445 cejka 290
	ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
1451 cejka 291
	int i;
1490 palkovsky 292
 
293
	async_set_client_connection(client_connection);
1445 cejka 294
 
295
	/* Connect to keyboard driver */
296
 
1451 cejka 297
	while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
1453 palkovsky 298
		usleep(10000);
1445 cejka 299
	};
300
 
1453 palkovsky 301
	if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
1445 cejka 302
		return -1;
303
	};
304
 
305
	/* Connect to framebuffer driver */
306
 
1487 cejka 307
	while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
308
		usleep(10000);
309
	}
310
 
311
	ipc_call_sync_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols)); 
1489 palkovsky 312
	ipc_call_sync(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL); 
1487 cejka 313
 
314
	/* Init virtual consoles */
1451 cejka 315
	for (i = 0; i < CONSOLE_COUNT; i++) {
316
		connections[i].used = 0;
317
		keybuffer_init(&(connections[i].keybuffer));
1481 cejka 318
 
319
		connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
320
		connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
321
		connections[i].keyrequest_counter = 0;
1487 cejka 322
 
323
		if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
324
			/*FIXME: handle error */
325
			return -1;
326
		}
1451 cejka 327
	}
1445 cejka 328
 
1506 cejka 329
	async_new_connection(phonehash, 0, NULL, keyboard_events);
330
 
1504 cejka 331
	ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, 0, 0, NULL, NULL); 
1497 cejka 332
 
1453 palkovsky 333
	if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
1445 cejka 334
		return -1;
335
	};
336
 
1453 palkovsky 337
	async_manager();
1451 cejka 338
 
1445 cejka 339
	return 0;	
340
}