Subversion Repositories HelenOS

/*

 * Copyright (c) 2006 Ondrej Palkovsky

 * Copyright (c) 2008 Martin Decky

 * 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.

 */

/** @defgroup msimfb MSIM text console

 * @brief   HelenOS MSIM text console.

 * @ingroup fbs

 * @{

 */

/** @file

 */

#include <async.h>

#include <ipc/fb.h>

#include <ipc/ipc.h>

#include <libc.h>

#include <errno.h>

#include <string.h>

#include <libc.h>

#include <stdio.h>

#include <ipc/fb.h>

#include <sysinfo.h>

#include <as.h>

#include <align.h>

#include <ddi.h>

#include "msim.h"

#define WIDTH 80

#define HEIGHT 25

#define MAX_CONTROL 20

/* Allow only 1 connection */

static int client_connected = 0;

static char *virt_addr;

static void msim_putc(const char c)

{

    *virt_addr = c;

}

static void msim_puts(char *str)

{

    while (*str)

        *virt_addr = *(str++);

}

static void msim_clrscr(void)

{

    msim_puts("\033[2J");

}

static void msim_goto(const unsigned int row, const unsigned int col)

{

    if ((row > HEIGHT) || (col > WIDTH))

        return;

    char control[MAX_CONTROL];

    snprintf(control, MAX_CONTROL, "\033[%u;%uf", row + 1, col + 1);

    msim_puts(control);

}

static void msim_set_style(const unsigned int mode)

{

    char control[MAX_CONTROL];

    snprintf(control, MAX_CONTROL, "\033[%um", mode);

    msim_puts(control);

}

static void msim_cursor_disable(void)

{

    msim_puts("\033[?25l");

}

static void msim_cursor_enable(void)

{

    msim_puts("\033[?25h");

}

static void msim_scroll(int i)

{

    if (i > 0) {

        msim_goto(HEIGHT - 1, 0);

        while (i--)

            msim_puts("\033D");

    } else if (i < 0) {

        msim_goto(0, 0);

        while (i++)

            msim_puts("\033M");

    }

}

static void msim_client_connection(ipc_callid_t iid, ipc_call_t *icall)

{

    int retval;

    ipc_callid_t callid;

    ipc_call_t call;

    char c;

    int lastcol = 0;

    int lastrow = 0;

    int newcol;

    int newrow;

    int fgcolor;

    int bgcolor;

    int i;

    if (client_connected) {

        ipc_answer_0(iid, ELIMIT);

        return;

    }

    client_connected = 1;

    ipc_answer_0(iid, EOK);

    /* Clear the terminal, set scrolling region

       to 0 - 25 lines */

    msim_clrscr();

    msim_goto(0, 0);

    msim_puts("\033[0;25r");

    while (true) {

        callid = async_get_call(&call);

        switch (IPC_GET_METHOD(call)) {

        case IPC_M_PHONE_HUNGUP:

            client_connected = 0;

            ipc_answer_0(callid, EOK);

            return;

        case FB_PUTCHAR:

            c = IPC_GET_ARG1(call);

            newrow = IPC_GET_ARG2(call);

            newcol = IPC_GET_ARG3(call);

            if ((lastcol != newcol) || (lastrow != newrow))

                msim_goto(newrow, newcol);

            lastcol = newcol + 1;

            lastrow = newrow;

            msim_putc(c);

            retval = 0;

            break;

        case FB_CURSOR_GOTO:

            newrow = IPC_GET_ARG1(call);

            newcol = IPC_GET_ARG2(call);

            msim_goto(newrow, newcol);

            lastrow = newrow;

            lastcol = newcol;

            retval = 0;

            break;

        case FB_GET_CSIZE:

            ipc_answer_2(callid, EOK, HEIGHT, WIDTH);

            continue;

        case FB_CLEAR:

            msim_clrscr();

            retval = 0;

            break;

        case FB_SET_STYLE:

            fgcolor = IPC_GET_ARG1(call);

            bgcolor = IPC_GET_ARG2(call);

            if (fgcolor < bgcolor)

                msim_set_style(0);

            else

                msim_set_style(7);

            retval = 0;

            break;

        case FB_SCROLL:

            i = IPC_GET_ARG1(call);

            if ((i > HEIGHT) || (i < -HEIGHT)) {

                retval = EINVAL;

                break;

            }

            msim_scroll(i);

            msim_goto(lastrow, lastcol);

            retval = 0;

            break;

        case FB_CURSOR_VISIBILITY:

            if(IPC_GET_ARG1(call))

                msim_cursor_enable();

            else

                msim_cursor_disable();

            retval = 0;

            break;

        default:

            retval = ENOENT;

        }

        ipc_answer_0(callid, retval);

    }

}

int msim_init(void)

{

    void *phys_addr = (void *) sysinfo_value("fb.address.physical");

    virt_addr = (char *) as_get_mappable_page(1);

    physmem_map(phys_addr, virt_addr, 1, AS_AREA_READ | AS_AREA_WRITE);

    async_set_client_connection(msim_client_connection);

    return 0;

}

/**

 * @}

 */