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1493 palkovsky 1
/*
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 * Copyright (C) 2006 Ondrej Palkovsky
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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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#include <align.h>
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#include <async.h>
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#include <ipc/ipc.h>
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#include <errno.h>
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#include <stdio.h>
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#include <ddi.h>
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#include <sysinfo.h>
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#include <as.h>
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#include <ipc/fb.h>
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#include <ipc/ipc.h>
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#include <ipc/ns.h>
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#include <ipc/services.h>
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#include "ega.h"
1534 palkovsky 43
#include "../console/screenbuffer.h"
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#include "main.h"
1493 palkovsky 45
 
1551 vana 46
 
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#define EGA_IO_ADDRESS 0x3d4
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#define EGA_IO_SIZE 2
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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1493 palkovsky 55
/* Allow only 1 connection */
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static int client_connected = 0;
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static unsigned int scr_width;
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static unsigned int scr_height;
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static char *scr_addr;
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1534 palkovsky 62
static unsigned int style = 0x0f;
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1551 vana 64
static inline void outb(u16 port, u8 b)
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{
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    asm volatile ("outb %0, %1\n" :: "a" (b), "d" (port));
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}
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static inline void outw(u16 port, u16 w)
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{
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    asm volatile ("outw %0, %1\n" :: "a" (w), "d" (port));
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}
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static inline void outl(u16 port, u32 l)
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{
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    asm volatile ("outl %0, %1\n" :: "a" (l), "d" (port));
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}
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static inline u8 inb(u16 port)
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{
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    u8 val;
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    asm volatile ("inb %1, %0 \n" : "=a" (val) : "d"(port));
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    return val;
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}
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static inline u16 inw(u16 port)
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{
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    u16 val;
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    asm volatile ("inw %1, %0 \n" : "=a" (val) : "d"(port));
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    return val;
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}
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static inline u32 inl(u16 port)
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{
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    u32 val;
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    asm volatile ("inl %1, %0 \n" : "=a" (val) : "d"(port));
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    return val;
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}
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1493 palkovsky 106
static void clrscr(void)
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{
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    int i;
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1534 palkovsky 110
    for (i=0; i < scr_width*scr_height; i++) {
1493 palkovsky 111
        scr_addr[i*2] = ' ';
1534 palkovsky 112
        scr_addr[i*2+1] = style;
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    }
1493 palkovsky 114
}
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1551 vana 116
void cursor_goto(unsigned int row, unsigned int col)
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{
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    int ega_cursor;
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    ega_cursor=col+scr_width*row;
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122
    outb(EGA_IO_ADDRESS    , 0xe);
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    outb(EGA_IO_ADDRESS + 1, (ega_cursor >>8) & 0xff);
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    outb(EGA_IO_ADDRESS    , 0xf);
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    outb(EGA_IO_ADDRESS + 1, ega_cursor & 0xff);
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}
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void cursor_disable(void)
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{
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    u8 stat;
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    outb(EGA_IO_ADDRESS , 0xa);
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    stat=inb(EGA_IO_ADDRESS + 1);
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    outb(EGA_IO_ADDRESS , 0xa);
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    outb(EGA_IO_ADDRESS +1 ,stat | (1<<5) );
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}
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void cursor_enable(void)
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{
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    u8 stat;
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    outb(EGA_IO_ADDRESS , 0xa);
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    stat=inb(EGA_IO_ADDRESS + 1);
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    outb(EGA_IO_ADDRESS , 0xa);
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    outb(EGA_IO_ADDRESS +1 ,stat & (~(1<<5)) );
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}
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1493 palkovsky 146
static void printchar(char c, unsigned int row, unsigned int col)
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{
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    scr_addr[(row*scr_width + col)*2] = c;
1534 palkovsky 149
    scr_addr[(row*scr_width + col)*2+1] = style;
1551 vana 150
 
151
    cursor_goto(row,col+1);
1493 palkovsky 152
}
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1534 palkovsky 154
static void draw_text_data(keyfield_t *data)
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{
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    int i;
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158
    for (i=0; i < scr_width*scr_height; i++) {
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        scr_addr[i*2] = data[i].character;
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        if (data[i].style.fg_color > data[i].style.bg_color)
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            scr_addr[i*2+1] = 0x0f;
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        else
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            scr_addr[i*2+1] = 0xf0;
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    }
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}
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1493 palkovsky 167
static void ega_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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    unsigned int row, col;
1534 palkovsky 174
    int bgcolor,fgcolor;
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    keyfield_t *interbuf = NULL;
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    size_t intersize = 0;
1493 palkovsky 177
 
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    if (client_connected) {
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        ipc_answer_fast(iid, ELIMIT, 0,0);
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        return;
181
    }
182
    client_connected = 1;
183
    ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
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185
    while (1) {
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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_fast(callid,0,0,0);
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            return; /* Exit thread */
1534 palkovsky 192
        case IPC_M_AS_AREA_SEND:
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            /* We accept one area for data interchange */
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            intersize = IPC_GET_ARG2(call);
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            if (intersize >= scr_width*scr_height*sizeof(*interbuf)) {
1547 palkovsky 196
                receive_comm_area(callid,&call,(void **)&interbuf);
1534 palkovsky 197
                continue;
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            }
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            retval = EINVAL;
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            break;
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        case FB_DRAW_TEXT_DATA:
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            if (!interbuf) {
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                retval = EINVAL;
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                break;
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            }
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            draw_text_data(interbuf);
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            retval = 0;
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            break;
1493 palkovsky 209
        case FB_GET_CSIZE:
1530 palkovsky 210
            ipc_answer_fast(callid, 0, scr_height, scr_width);
1493 palkovsky 211
            continue;
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        case FB_CLEAR:
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            clrscr();
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            retval = 0;
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            break;
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        case FB_PUTCHAR:
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            c = IPC_GET_ARG1(call);
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            row = IPC_GET_ARG2(call);
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            col = IPC_GET_ARG3(call);
1534 palkovsky 220
            if (col >= scr_width || row >= scr_height) {
1493 palkovsky 221
                retval = EINVAL;
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                break;
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            }
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            printchar(c,row,col);
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            retval = 0;
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            break;
1551 vana 227
        case FB_CURSOR_GOTO:
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            row = IPC_GET_ARG1(call);
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            col = IPC_GET_ARG2(call);
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            if (row >= scr_height || col >= scr_width) {
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                retval = EINVAL;
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                break;
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            }
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            cursor_goto(row,col);
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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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                cursor_enable();
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            else
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                cursor_disable();
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            retval = 0;
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            break;
1534 palkovsky 244
        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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                style = 0x0f;
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            else
250
                style = 0xf0;
1493 palkovsky 251
        default:
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            retval = ENOENT;
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        }
254
        ipc_answer_fast(callid,retval,0,0);
255
    }
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}
257
 
258
int ega_init(void)
259
{
260
    void *ega_ph_addr;
1501 palkovsky 261
    size_t sz;
1493 palkovsky 262
 
263
 
264
    ega_ph_addr=(void *)sysinfo_value("fb.address.physical");
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    scr_width=sysinfo_value("fb.width");
266
    scr_height=sysinfo_value("fb.height");
1551 vana 267
    iospace_enable(task_get_id(),(void *)EGA_IO_ADDRESS,2);
1493 palkovsky 268
 
1501 palkovsky 269
    sz = scr_width*scr_height*2;
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    scr_addr = as_get_mappable_page(sz);
1493 palkovsky 271
 
1501 palkovsky 272
    map_physmem(ega_ph_addr, scr_addr, ALIGN_UP(sz,PAGE_SIZE)>>PAGE_WIDTH,
1493 palkovsky 273
            AS_AREA_READ | AS_AREA_WRITE);
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275
    async_set_client_connection(ega_client_connection);
276
 
277
    clrscr();
278
 
279
    return 0;
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}
1551 vana 281