source: mainline/console/console.c@ 44c6d88d

/*
 * Copyright (C) 2006 Josef Cejka
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#include <kbd.h>
#include <fb.h>
#include <ipc/ipc.h>
#include <ipc/fb.h>
#include <ipc/services.h>
#include <errno.h>
#include <key_buffer.h>
#include <console.h>

//#define CONSOLE_COUNT VFB_CONNECTIONS
#define CONSOLE_COUNT 6

#define NAME "CONSOLE"

typedef struct {
        keybuffer_t keybuffer;
        int client_phone;
        int vfb_number; /* Not used */
        int vfb_phone;
        int used;
} connection_t;

connection_t connections[CONSOLE_COUNT];

static int find_free_connection() 
{
        int i = 0;
        
        while (i < CONSOLE_COUNT) {
                if (connections[i].used == 0)
                        return i;
                ++i;
        }
        return CONSOLE_COUNT;
}


static int find_connection(int client_phone) 
{
        int i = 0;
        
        while (i < CONSOLE_COUNT) {
                if (connections[i].client_phone == client_phone)
                        return i;
                ++i;
        }
        return  CONSOLE_COUNT;
}

int main(int argc, char *argv[])
{
        ipcarg_t phonead;
        ipc_call_t call;
        ipc_callid_t callid;
        int kbd_phone, fb_phone;
        ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
        int i;
        int active_client = 0;
        
        /* Connect to keyboard driver */

        while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
        };
        
        if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonead) != 0) {
                return -1;
        };

        /* Connect to framebuffer driver */
        
        for (i = 0; i < CONSOLE_COUNT; i++) {
                connections[i].used = 0;
                keybuffer_init(&(connections[i].keybuffer));
                /* TODO: init key_buffer */
                while ((connections[i].vfb_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
                                
ipc_call_async_2(connections[i].vfb_phone, FB_PUTCHAR, 'a', 'b', NULL, (void *)NULL); 
                }
        }
        

        
        if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonead) != 0) {
                return -1;
        };
        
        while (1) {
                callid = ipc_wait_for_call(&call);
                switch (IPC_GET_METHOD(call)) {
                        case IPC_M_PHONE_HUNGUP:
                                /*FIXME: if its fb or kbd then panic! */
                                /* free connection */
                                if (i = find_connection(IPC_GET_ARG3(call)) < CONSOLE_COUNT) {
                                        connections[i].used = 0;
                                         /*TODO: free connection[i].key_buffer; */
                                        /* FIXME: active_connection hungup */
                                        retval = 0;
                                } else {
                                        /*FIXME: No such connection */
                                }
                                break;
                        case IPC_M_CONNECT_ME_TO:
                                
                                /* find first free connection */
                                
                                if ((i = find_free_connection()) == CONSOLE_COUNT) {
                                        retval = ELIMIT;
                                        break;
                                }
                                
                                connections[i].used = 1;
                                connections[i].client_phone = IPC_GET_ARG3(call);
                                
                                retval = 0;
                                break;
                        case KBD_PUSHCHAR:
                                /* got key from keyboard driver */
                                /* find active console */
                                /* if client is awaiting key, send it */
                                /*FIXME: else store key to its buffer */
                                retval = 0;
                                i = IPC_GET_ARG1(call) & 0xff;
                                /* switch to another virtual console */
                                if ((i >= KBD_KEY_F1) && (i < KBD_KEY_F1 + CONSOLE_COUNT)) {
                                        active_client = i - KBD_KEY_F1;
                                        break;
                                }
                                
                                keybuffer_push(&(connections[active_client].keybuffer), i);
                                
                                break;
                        case CONSOLE_PUTCHAR:
                                /* find sender client */
                                /* ???
                                 * if its active client, send it to vfb
                                 **/
                                /*FIXME: check, if its from active client, .... */

                                if ((i = find_connection(IPC_GET_ARG3(call))) == CONSOLE_COUNT) {
                                        break;
                                };
                                
                                /* TODO: send message to fb */
                                ipc_call_async_2(connections[i].vfb_phone, FB_PUTCHAR, IPC_GET_ARG1(call), IPC_GET_ARG2(call), NULL, NULL); 
                                
                                break;
                        case CONSOLE_GETCHAR:
                                /* FIXME: */
                                if (!keybuffer_pop(&(connections[active_client].keybuffer), (char *)&arg1)) {
                                        /* FIXME: buffer empty -> store request */
                                        arg1 = 'X'; /* Only temporary */
                                };
//ipc_call_async_2(connections[active_client].vfb_phone, FB_PUTCHAR, ' ', arg1, NULL, (void *)NULL); 
                                break;
                        default:
                                retval = ENOENT;
                                break;
                }

                if (! (callid & IPC_CALLID_NOTIFICATION)) {
                        ipc_answer_fast(callid, retval, arg1, arg2);
                }
        }

        return 0;       
}