Subversion Repositories HelenOS-historic

Rev

Rev 1345 | Rev 1392 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1339 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
 
1352 palkovsky 29
#include <ipc/ipc.h>
30
#include <ipc/services.h>
1339 cejka 31
#include <stdio.h>
32
#include <unistd.h>
33
#include <stdlib.h>
1352 palkovsky 34
#include <ipc/ns.h>
1339 cejka 35
#include <errno.h>
36
#include <arch/kbd.h>
37
#include <kbd.h>
38
#include <key_buffer.h>
39
#include <fifo.h>
40
 
41
#define NAME "KBD"
42
 
43
#define KBD_REQUEST_MAX 32 /**< Maximum requests buffered until keypress */
44
 
45
int main(int argc, char **argv)
46
{
47
    ipc_call_t call;
48
    ipc_callid_t callid;
49
    char connected = 0;
50
    int res;
51
    int c;
52
    ipcarg_t phonead;
53
 
54
    ipcarg_t retval, arg1, arg2;
1344 cejka 55
 
56
    /* Counter of unsatisfied calls */
1339 cejka 57
    fifo_count_t callers_counter = 0;
1344 cejka 58
    /* Fifo with callid's of unsatisfied calls requred for answer */
1339 cejka 59
    FIFO_INITIALIZE_STATIC(callers_buffer, ipc_callid_t, KBD_REQUEST_MAX);
60
 
61
    printf("Uspace kbd service started.\n");
62
 
63
    /* Initialize arch dependent parts */
64
    if (!(res = kbd_arch_init())) {
65
            printf("Kbd registration failed with retval %d.\n", res);
66
            return -1;
67
            };
68
 
69
    /* Initialize key buffer */
70
    key_buffer_init();
71
 
72
    /* Register service at nameserver */
73
    printf("%s: Registering at naming service.\n", NAME);
74
 
1343 jermar 75
    if ((res = ipc_connect_to_me(PHONE_NS, SERVICE_KEYBOARD, 0, &phonead)) != 0) {
1339 cejka 76
        printf("%s: Error: Registering at naming service failed.\n", NAME);
77
        return -1;
78
    };
79
 
80
    while (1) {
81
        callid = ipc_wait_for_call(&call, 0);
82
    //  printf("%s:Call phone=%lX..", NAME, call.in_phone_hash);
83
        switch (IPC_GET_METHOD(call)) {
1344 cejka 84
            case IPC_M_PHONE_HUNGUP:
85
                if (connected) {
86
                    /* If nobody's connected, clear keybuffer and dont store new keys */
87
                    if (--connected == 0) {
88
                        callers_counter = 0;
89
                        callers_buffer.head = callers_buffer.tail = 0;
90
                        key_buffer_free(); 
91
                    }
92
 
93
                    printf("%s: Phone hung up.\n", NAME);
94
                } else {
95
                    printf("%s: Oops, got phone hung up, but nobody connected.\n", NAME);
1339 cejka 96
                }
1344 cejka 97
 
1339 cejka 98
                retval = 0;
99
                break;
1344 cejka 100
            case IPC_M_CONNECT_ME_TO:
101
            //  printf("%s: Connect me (%P) to: %zd\n",NAME, IPC_GET_ARG3(call), IPC_GET_ARG1(call));
102
                /* Only one connected client allowed */
103
                if (connected) {
104
                    retval = ELIMIT;
1339 cejka 105
                } else {
1344 cejka 106
                    retval = 0;
107
                    connected = 1;
1339 cejka 108
                }
1344 cejka 109
                break;
110
            case IPC_M_INTERRUPT:
111
                if (connected) {
112
                    /* recode scancode and store it into key buffer */
113
                    kbd_arch_process(IPC_GET_ARG2(call));
114
                    //printf("%s: GOT INTERRUPT: %c\n", NAME, IPC_GET_ARG2(call));
115
 
116
                    /* Some callers could awaiting keypress - if its true, we have to send keys to them.
117
                     * One interrupt can store more than one key into buffer. */
118
                    retval = 0;
119
                    arg2 = 0xbeef;
120
                    while ((callers_counter) && (!key_buffer_empty())) {
121
                        callers_counter--;
122
                        if (!key_buffer_pop((char *)&arg1)) {
123
                            printf("%s: KeyBuffer empty but it should not be.\n");
124
                            break;
125
                        }
126
                        ipc_answer_fast(fifo_pop(callers_buffer), retval, arg1, arg2);
127
                    }
128
                }
129
                break;
130
            case KBD_GETCHAR:
131
    //          printf("%s: Getchar: ", NAME);
132
                retval = 0;
133
                arg1 = 0;  
134
                if (!key_buffer_pop((char *)&arg1)) {
135
                    if (callers_counter < KBD_REQUEST_MAX) {
136
                        callers_counter++;
137
                        fifo_push(callers_buffer, callid);
138
                    } else {
139
                        retval = ELIMIT;
140
                    }
141
                    continue;
142
                };
143
                arg2 = 0xbeef;
144
            //  printf("GetChar return %c\n", arg1);
145
 
146
                break;
147
            default:
148
                printf("%s: Unknown method: %zd\n", NAME, IPC_GET_METHOD(call));
149
                retval = ENOENT;
150
                break;
1339 cejka 151
        }
1344 cejka 152
 
1339 cejka 153
        if (! (callid & IPC_CALLID_NOTIFICATION)) {
1343 jermar 154
            ipc_answer_fast(callid, retval, arg1, arg2);
1339 cejka 155
        }
156
    }
157
}
1344 cejka 158