Subversion Repositories HelenOS

/*

 * 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.

 */

/**

 * @addtogroup kbdgen generic

 * @brief   HelenOS generic uspace keyboard handler.

 * @ingroup  kbd

 * @{

 */

/** @file

 */

#include <ipc/ipc.h>

#include <ipc/services.h>

#include <stdio.h>

#include <unistd.h>

#include <stdlib.h>

#include <stdio.h>

#include <ipc/ns.h>

#include <async.h>

#include <errno.h>

#include <libadt/fifo.h>

#include <kbd/kbd.h>

#include <kbd/keycode.h>

#include <kbd.h>

#include <key_buffer.h>

#include <kbd_port.h>

#include <kbd_ctl.h>

#include <layout.h>

#define NAME "kbd"

int cons_connected = 0;

int phone2cons = -1;

keybuffer_t keybuffer;

/** Currently active modifiers. */

static unsigned mods = KM_NUM_LOCK;

/** Currently pressed lock keys. We track these to tackle autorepeat. */

static unsigned lock_keys;

void kbd_push_scancode(int scancode)

{

/*  printf("scancode: 0x%x\n", scancode);*/

    kbd_ctl_parse_scancode(scancode);

}

void kbd_push_ev(int type, unsigned int key)

{

    kbd_event_t ev;

    unsigned mod_mask;

    switch (key) {

    case KC_LCTRL: mod_mask = KM_LCTRL; break;

    case KC_RCTRL: mod_mask = KM_RCTRL; break;

    case KC_LSHIFT: mod_mask = KM_LSHIFT; break;

    case KC_RSHIFT: mod_mask = KM_RSHIFT; break;

    case KC_LALT: mod_mask = KM_LALT; break;

    case KC_RALT: mod_mask = KM_RALT; break;

    default: mod_mask = 0; break;

    }

    if (mod_mask != 0) {

        if (type == KE_PRESS)

            mods = mods | mod_mask;

        else

            mods = mods & ~mod_mask;

    }

    switch (key) {

    case KC_CAPS_LOCK: mod_mask = KM_CAPS_LOCK; break;

    case KC_NUM_LOCK: mod_mask = KM_NUM_LOCK; break;

    case KC_SCROLL_LOCK: mod_mask = KM_SCROLL_LOCK; break;

    default: mod_mask = 0; break;

    }

    if (mod_mask != 0) {

        if (type == KE_PRESS) {

            /*

             * Only change lock state on transition from released

             * to pressed. This prevents autorepeat from messing

             * up the lock state.

             */

            mods = mods ^ (mod_mask & ~lock_keys);

            lock_keys = lock_keys | mod_mask;

        } else {

            lock_keys = lock_keys & ~mod_mask;

        }

    }

/*

    printf("type: %d\n", type);

    printf("mods: 0x%x\n", mods);

    printf("keycode: %u\n", key);

*/

    ev.type = type;

    ev.key = key;

    ev.mods = mods;

    ev.c = layout_parse_ev(&ev);

    async_msg_4(phone2cons, KBD_EVENT, ev.type, ev.key, ev.mods, ev.c);

}

static void console_connection(ipc_callid_t iid, ipc_call_t *icall)

{

    ipc_callid_t callid;

    ipc_call_t call;

    int retval;

    if (cons_connected) {

        ipc_answer_0(iid, ELIMIT);

        return;

    }

    cons_connected = 1;

    ipc_answer_0(iid, EOK);

    while (1) {

        callid = async_get_call(&call);

        switch (IPC_GET_METHOD(call)) {

        case IPC_M_PHONE_HUNGUP:

            cons_connected = 0;

            ipc_hangup(phone2cons);

            phone2cons = -1;

            ipc_answer_0(callid, EOK);

            return;

        case IPC_M_CONNECT_TO_ME:

            if (phone2cons != -1) {

                retval = ELIMIT;

                break;

            }

            phone2cons = IPC_GET_ARG5(call);

            retval = 0;

            break;

        default:

            retval = EINVAL;

        }

        ipc_answer_0(callid, retval);

    }  

}

int main(int argc, char **argv)

{

    printf(NAME ": HelenOS Keyboard service\n");

    ipcarg_t phonead;

    /* Initialize port driver. */

    if (kbd_port_init())

        return -1;

    /* Initialize key buffer */

    keybuffer_init(&keybuffer);

    async_set_client_connection(console_connection);

    /* Register service at nameserver. */

    if (ipc_connect_to_me(PHONE_NS, SERVICE_KEYBOARD, 0, 0, &phonead) != 0)

        return -1;

    printf(NAME ": Accepting connections\n");

    async_manager();

    /* Not reached. */

    return 0;

}

/**

 * @}

 */