source: mainline/console/console.c@ 1180a88e

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 1180a88e was 10569b1, checked in by Josef Cejka <malyzelenyhnus@…>, 19 years ago

Another console improvement.
  • Property mode set to 100644
File size: 8.6 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
43#define CONSOLE_COUNT 12
44#define MAX_KEYREQUESTS_BUFFERED 32
45
46#define NAME "CONSOLE"
47
48int active_console = 1;
49
50struct {
51 int phone; /**< Framebuffer phone */
52 int rows; /**< Framebuffer rows */
53 int cols; /**< Framebuffer columns */
54} fb_info;
55
56typedef struct {
57 keybuffer_t keybuffer;
58 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t , MAX_KEYREQUESTS_BUFFERED);
59 int keyrequest_counter;
60 int client_phone;
61 int used;
62 screenbuffer_t screenbuffer;
63} connection_t;
64
65connection_t connections[CONSOLE_COUNT];
66
67static int find_free_connection()
68{
69 int i = 0;
70
71 while (i < CONSOLE_COUNT) {
72 if (connections[i].used == 0)
73 return i;
74 ++i;
75 }
76 return CONSOLE_COUNT;
77}
78
79
80static int find_connection(int client_phone)
81{
82 int i = 0;
83
84 while (i < CONSOLE_COUNT) {
85 if (connections[i].client_phone == client_phone)
86 return i;
87 ++i;
88 }
89 return CONSOLE_COUNT;
90}
91
92/** Check key and process special keys.
93 *
94 * */
95static void write_char(int console, char key)
96{
97 screenbuffer_t *scr = &(connections[console].screenbuffer);
98
99 switch (key) {
100 case '\n':
101 scr->position_y += 1;
102 scr->position_x = 0;
103 break;
104 case '\r':
105 break;
106 case '\t':
107 scr->position_x += 8;
108 scr->position_x -= scr->position_x % 8;
109 break;
110 case '\b':
111 if (scr->position_x == 0)
112 break;
113
114 scr->position_x--;
115
116 if (console == active_console) {
117 ipc_call_async_3(fb_info.phone, FB_PUTCHAR, ' ', scr->position_y, scr->position_x, NULL, NULL);
118 }
119
120 screenbuffer_putchar(scr, ' ');
121
122 break;
123 default:
124 if (console == active_console) {
125 ipc_call_async_3(fb_info.phone, FB_PUTCHAR, key, scr->position_y, scr->position_x, NULL, NULL);
126 }
127
128 screenbuffer_putchar(scr, key);
129 scr->position_x++;
130 }
131
132 scr->position_y += (scr->position_x >= scr->size_x);
133
134 if (scr->position_y >= scr->size_y) {
135 scr->position_y = scr->size_y - 1;
136 screenbuffer_clear_line(scr, scr->top_line++);
137 ipc_call_async(fb_info.phone, FB_SCROLL, 1, NULL, NULL);
138 }
139
140 scr->position_x = scr->position_x % scr->size_x;
141 scr->position_y = scr->position_y % scr->size_y;
142
143}
144
145
146/* Handler for keyboard */
147static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
148{
149 ipc_callid_t callid;
150 ipc_call_t call;
151 int retval;
152 int i, j;
153 char c,d;
154 connection_t *conn;
155
156 /* Ignore parameters, the connection is alread opened */
157 while (1) {
158 callid = async_get_call(&call);
159 switch (IPC_GET_METHOD(call)) {
160 case IPC_M_PHONE_HUNGUP:
161 ipc_answer_fast(callid,0,0,0);
162 /* TODO: Handle hangup */
163 return;
164 case KBD_PUSHCHAR:
165 /* got key from keyboard driver */
166
167 retval = 0;
168 c = IPC_GET_ARG1(call);
169 /* switch to another virtual console */
170
171 conn = &connections[active_console];
172// if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
173 if ((c >= '1') && (c < '1' + CONSOLE_COUNT)) {
174 /*FIXME: draw another console content from buffer */
175 if (c - KBD_KEY_F1 == active_console)
176 break;
177 active_console = c - '1';
178 conn = &connections[active_console];
179
180 ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 0, NULL, NULL);
181 ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
182
183 for (i = 0; i < conn->screenbuffer.size_x; i++)
184 for (j = 0; j < conn->screenbuffer.size_y; j++) {
185 d = get_field_at(&(conn->screenbuffer),i, j)->character;
186 if (d && d != ' ')
187 ipc_call_async_3(fb_info.phone, FB_PUTCHAR, d, j, i, NULL, NULL);
188 }
189 ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, conn->screenbuffer.position_y, conn->screenbuffer.position_x, NULL, NULL);
190 ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL, NULL);
191
192 break;
193 }
194
195 /* if client is awaiting key, send it */
196 if (conn->keyrequest_counter > 0) {
197 conn->keyrequest_counter--;
198 ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
199 break;
200 }
201
202 /*FIXME: else store key to its buffer */
203 keybuffer_push(&conn->keybuffer, c);
204
205 break;
206 default:
207 retval = ENOENT;
208 }
209 ipc_answer_fast(callid, retval, 0, 0);
210 }
211}
212
213/** Default thread for new connections */
214void client_connection(ipc_callid_t iid, ipc_call_t *icall)
215{
216 ipc_callid_t callid;
217 ipc_call_t call;
218 int consnum;
219 ipcarg_t arg1;
220
221 if ((consnum = find_free_connection()) == CONSOLE_COUNT) {
222 ipc_answer_fast(iid,ELIMIT,0,0);
223 return;
224 }
225
226 connections[consnum].used = 1;
227 connections[consnum].client_phone = IPC_GET_ARG3(call);
228 screenbuffer_clear(&(connections[consnum].screenbuffer));
229
230 /* Accept the connection */
231 ipc_answer_fast(iid,0,0,0);
232
233 while (1) {
234 callid = async_get_call(&call);
235 switch (IPC_GET_METHOD(call)) {
236 case IPC_M_PHONE_HUNGUP:
237 /* TODO */
238 ipc_answer_fast(callid, 0,0,0);
239 return;
240 case CONSOLE_PUTCHAR:
241 write_char(consnum, IPC_GET_ARG1(call));
242 break;
243 case CONSOLE_CLEAR:
244 /* Send message to fb */
245 if (consnum == active_console) {
246 ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
247 }
248
249 screenbuffer_clear(&(connections[consnum].screenbuffer));
250
251 break;
252 case CONSOLE_GOTO:
253
254 screenbuffer_goto(&(connections[consnum].screenbuffer), IPC_GET_ARG1(call), IPC_GET_ARG2(call));
255
256 break;
257
258 case CONSOLE_GETCHAR:
259 if (keybuffer_empty(&(connections[consnum].keybuffer))) {
260 /* buffer is empty -> store request */
261 if (connections[consnum].keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {
262 fifo_push(connections[consnum].keyrequests, callid);
263 connections[consnum].keyrequest_counter++;
264 } else {
265 /* no key available and too many requests => fail */
266 ipc_answer_fast(callid, ELIMIT, 0, 0);
267 }
268 continue;
269 };
270 keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);
271
272 break;
273 }
274 ipc_answer_fast(callid, 0, arg1, 0);
275 }
276}
277
278int main(int argc, char *argv[])
279{
280 ipcarg_t phonehash;
281 int kbd_phone, fb_phone;
282 ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
283 int i;
284
285 async_set_client_connection(client_connection);
286
287 /* Connect to keyboard driver */
288
289 while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
290 usleep(10000);
291 };
292
293 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
294 return -1;
295 };
296 async_new_connection(phonehash, 0, NULL, keyboard_events);
297
298 /* Connect to framebuffer driver */
299
300 while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
301 usleep(10000);
302 }
303
304 ipc_call_sync_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
305 ipc_call_sync(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL);
306
307 /* Init virtual consoles */
308 for (i = 0; i < CONSOLE_COUNT; i++) {
309 connections[i].used = 0;
310 keybuffer_init(&(connections[i].keybuffer));
311
312 connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
313 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
314 connections[i].keyrequest_counter = 0;
315
316 if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
317 /*FIXME: handle error */
318 return -1;
319 }
320 }
321
322
323 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
324 return -1;
325 };
326
327 async_manager();
328
329 return 0;
330}
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