source: mainline/console/console.c@ da0c91e7

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since da0c91e7 was da0c91e7, checked in by Ondrej Palkovsky <ondrap@…>, 19 years ago

Added very preliminary support for console on architectures
that do not support framebuffer.
  • Property mode set to 100644
File size: 7.6 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 8
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/* Handler for keyboard */
93static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
94{
95 ipc_callid_t callid;
96 ipc_call_t call;
97 int retval;
98 int i, j;
99 char c,d;
100 connection_t *conn;
101
102 /* Ignore parameters, the connection is alread opened */
103 while (1) {
104 callid = async_get_call(&call);
105 switch (IPC_GET_METHOD(call)) {
106 case IPC_M_PHONE_HUNGUP:
107 ipc_answer_fast(callid,0,0,0);
108 /* TODO: Handle hangup */
109 return;
110 case KBD_PUSHCHAR:
111 /* got key from keyboard driver */
112
113 retval = 0;
114 c = IPC_GET_ARG1(call);
115 /* switch to another virtual console */
116
117 conn = &connections[active_console];
118// if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
119 if ((c >= '1') && (c < '1' + CONSOLE_COUNT)) {
120 /*FIXME: draw another console content from buffer */
121
122 active_console = c - '1';
123 conn = &connections[active_console];
124
125 ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 0, NULL, NULL);
126 ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
127 for (i = 0; i < conn->screenbuffer.size_x; i++)
128 for (j = 0; j < conn->screenbuffer.size_y; j++) {
129 d = get_field_at(&(conn->screenbuffer),i, j)->character;
130 if (d && d != ' ')
131 ipc_call_async_3(fb_info.phone, FB_PUTCHAR, d, j, i, NULL, NULL);
132 }
133 ipc_call_async_2(fb_info.phone, FB_CURSOR_GOTO, conn->screenbuffer.position_y, conn->screenbuffer.position_x, NULL, NULL);
134 ipc_call_async(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL, NULL);
135
136 break;
137 }
138
139 /* if client is awaiting key, send it */
140 if (conn->keyrequest_counter > 0) {
141 conn->keyrequest_counter--;
142 ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
143 break;
144 }
145
146 /*FIXME: else store key to its buffer */
147 keybuffer_push(&conn->keybuffer, c);
148
149 break;
150 default:
151 retval = ENOENT;
152 }
153 ipc_answer_fast(callid, retval, 0, 0);
154 }
155}
156
157/** Default thread for new connections */
158void client_connection(ipc_callid_t iid, ipc_call_t *icall)
159{
160 ipc_callid_t callid;
161 ipc_call_t call;
162 int consnum;
163 ipcarg_t arg1;
164
165 if ((consnum = find_free_connection()) == CONSOLE_COUNT) {
166 ipc_answer_fast(iid,ELIMIT,0,0);
167 return;
168 }
169
170 connections[consnum].used = 1;
171 connections[consnum].client_phone = IPC_GET_ARG3(call);
172 screenbuffer_clear(&(connections[consnum].screenbuffer));
173
174 /* Accept the connection */
175 ipc_answer_fast(iid,0,0,0);
176
177 while (1) {
178 callid = async_get_call(&call);
179 switch (IPC_GET_METHOD(call)) {
180 case IPC_M_PHONE_HUNGUP:
181 /* TODO */
182 ipc_answer_fast(callid, 0,0,0);
183 return;
184 case CONSOLE_PUTCHAR:
185
186 /* Send message to fb */
187 if (consnum == active_console) {
188 ipc_call_async_3(fb_info.phone, FB_PUTCHAR, IPC_GET_ARG2(call), connections[consnum].screenbuffer.position_y, \
189 connections[consnum].screenbuffer.position_x, NULL, NULL);
190 }
191
192 screenbuffer_putchar(&(connections[consnum].screenbuffer), IPC_GET_ARG2(call));
193 break;
194 case CONSOLE_CLEAR:
195 /* Send message to fb */
196 if (consnum == active_console) {
197 ipc_call_async_2(fb_info.phone, FB_CLEAR, 0, 0, NULL, NULL);
198 }
199
200 screenbuffer_clear(&(connections[consnum].screenbuffer));
201
202 break;
203 case CONSOLE_GOTO:
204
205 screenbuffer_goto(&(connections[consnum].screenbuffer), IPC_GET_ARG1(call), IPC_GET_ARG2(call));
206
207 break;
208
209 case CONSOLE_GETCHAR:
210 if (keybuffer_empty(&(connections[consnum].keybuffer))) {
211 /* buffer is empty -> store request */
212 if (connections[consnum].keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {
213 fifo_push(connections[consnum].keyrequests, callid);
214 connections[consnum].keyrequest_counter++;
215 } else {
216 /* no key available and too many requests => fail */
217 ipc_answer_fast(callid, ELIMIT, 0, 0);
218 }
219 continue;
220 };
221 keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);
222
223 break;
224 }
225 ipc_answer_fast(callid, 0, arg1, 0);
226 }
227}
228
229int main(int argc, char *argv[])
230{
231 ipcarg_t phonehash;
232 int kbd_phone, fb_phone;
233 ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
234 int i;
235
236 async_set_client_connection(client_connection);
237
238 /* Connect to keyboard driver */
239
240 while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
241 usleep(10000);
242 };
243
244 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
245 return -1;
246 };
247 async_new_connection(phonehash, 0, NULL, keyboard_events);
248
249 /* Connect to framebuffer driver */
250
251 while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
252 usleep(10000);
253 }
254
255 ipc_call_sync_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
256 ipc_call_sync(fb_info.phone, FB_CURSOR_VISIBILITY, 1, NULL);
257
258 /* Init virtual consoles */
259 for (i = 0; i < CONSOLE_COUNT; i++) {
260 connections[i].used = 0;
261 keybuffer_init(&(connections[i].keybuffer));
262
263 connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
264 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
265 connections[i].keyrequest_counter = 0;
266
267 if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
268 /*FIXME: handle error */
269 return -1;
270 }
271 }
272
273 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
274 return -1;
275 };
276
277 async_manager();
278
279 return 0;
280}
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