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3234 decky 1
/*
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 * Copyright (c) 2006 Ondrej Palkovsky
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 * Copyright (c) 2008 Martin Decky
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @defgroup msimfb MSIM text console
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 * @brief   HelenOS MSIM text console.
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 * @ingroup fbs
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 * @{
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 */
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/** @file
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 */
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#include <async.h>
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#include <ipc/fb.h>
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#include <ipc/ipc.h>
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#include <libc.h>
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#include <errno.h>
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#include <string.h>
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#include <libc.h>
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#include <stdio.h>
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#include <ipc/fb.h>
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#include <sysinfo.h>
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#include <as.h>
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#include <align.h>
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#include <ddi.h>
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#include "msim.h"
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#define WIDTH 80
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#define HEIGHT 25
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#define MAX_CONTROL 20
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/* Allow only 1 connection */
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static int client_connected = 0;
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static char *virt_addr;
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static void msim_putc(const char c)
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{
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    *virt_addr = c;
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}
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static void msim_puts(char *str)
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{
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    while (*str)
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        *virt_addr = *(str++);
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}
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static void msim_clrscr(void)
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{
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    msim_puts("\033[2J");
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}
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static void msim_goto(const unsigned int row, const unsigned int col)
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{
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    if ((row > HEIGHT) || (col > WIDTH))
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        return;
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    char control[MAX_CONTROL];
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    snprintf(control, MAX_CONTROL, "\033[%u;%uf", row + 1, col + 1);
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    msim_puts(control);
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}
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static void msim_set_style(const unsigned int mode)
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{
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    char control[MAX_CONTROL];
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    snprintf(control, MAX_CONTROL, "\033[%um", mode);
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    msim_puts(control);
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}
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static void msim_cursor_disable(void)
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{
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    msim_puts("\033[?25l");
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}
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static void msim_cursor_enable(void)
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{
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    msim_puts("\033[?25h");
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}
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static void msim_scroll(int i)
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{
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    if (i > 0) {
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        msim_goto(HEIGHT - 1, 0);
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        while (i--)
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            msim_puts("\033D");
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    } else if (i < 0) {
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        msim_goto(0, 0);
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        while (i++)
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            msim_puts("\033M");
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    }
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}
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static void msim_client_connection(ipc_callid_t iid, ipc_call_t *icall)
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{
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    int retval;
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    ipc_callid_t callid;
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    ipc_call_t call;
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    char c;
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    int lastcol = 0;
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    int lastrow = 0;
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    int newcol;
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    int newrow;
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    int fgcolor;
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    int bgcolor;
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    int i;
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    if (client_connected) {
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        ipc_answer_0(iid, ELIMIT);
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        return;
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    }
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    client_connected = 1;
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    ipc_answer_0(iid, EOK);
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    /* Clear the terminal, set scrolling region
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       to 0 - 25 lines */
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    msim_clrscr();
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    msim_goto(0, 0);
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    msim_puts("\033[0;25r");
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    while (true) {
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        callid = async_get_call(&call);
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        switch (IPC_GET_METHOD(call)) {
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        case IPC_M_PHONE_HUNGUP:
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            client_connected = 0;
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            ipc_answer_0(callid, EOK);
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            return;
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        case FB_PUTCHAR:
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            c = IPC_GET_ARG1(call);
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            newrow = IPC_GET_ARG2(call);
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            newcol = IPC_GET_ARG3(call);
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            if ((lastcol != newcol) || (lastrow != newrow))
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                msim_goto(newrow, newcol);
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            lastcol = newcol + 1;
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            lastrow = newrow;
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            msim_putc(c);
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            retval = 0;
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            break;
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        case FB_CURSOR_GOTO:
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            newrow = IPC_GET_ARG1(call);
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            newcol = IPC_GET_ARG2(call);
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            msim_goto(newrow, newcol);
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            lastrow = newrow;
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            lastcol = newcol;
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            retval = 0;
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            break;
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        case FB_GET_CSIZE:
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            ipc_answer_2(callid, EOK, HEIGHT, WIDTH);
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            continue;
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        case FB_CLEAR:
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            msim_clrscr();
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            retval = 0;
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            break;
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        case FB_SET_STYLE:
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            fgcolor = IPC_GET_ARG1(call);
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            bgcolor = IPC_GET_ARG2(call);
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            if (fgcolor < bgcolor)
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                msim_set_style(0);
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            else
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                msim_set_style(7);
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            retval = 0;
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            break;
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        case FB_SCROLL:
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            i = IPC_GET_ARG1(call);
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            if ((i > HEIGHT) || (i < -HEIGHT)) {
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                retval = EINVAL;
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                break;
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            }
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            msim_scroll(i);
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            msim_goto(lastrow, lastcol);
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            retval = 0;
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            break;
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        case FB_CURSOR_VISIBILITY:
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            if(IPC_GET_ARG1(call))
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                msim_cursor_enable();
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            else
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                msim_cursor_disable();
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            retval = 0;
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            break;
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        default:
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            retval = ENOENT;
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        }
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        ipc_answer_0(callid, retval);
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    }
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}
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int msim_init(void)
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{
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    void *phys_addr = (void *) sysinfo_value("fb.address.physical");
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    virt_addr = (char *) as_get_mappable_page(1);
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    physmem_map(phys_addr, virt_addr, 1, AS_AREA_READ | AS_AREA_WRITE);
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    async_set_client_connection(msim_client_connection);
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    return 0;
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}
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/**
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 * @}
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 */