NetBSD-5.0.2/sys/arch/amiga/dev/ite_et.c
/* $NetBSD: ite_et.c,v 1.12 2007/03/05 20:29:07 he Exp $ */
/*
* Copyright (c) 1995 Ezra Story
* Copyright (c) 1995 Kari Mettinen
* Copyright (c) 1994 Markus Wild
* Copyright (c) 1994 Lutz Vieweg
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Lutz Vieweg.
* 4. 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 "opt_amigacons.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ite_et.c,v 1.12 2007/03/05 20:29:07 he Exp $");
#include "grfet.h"
#if NGRFET > 0
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/systm.h>
#include <dev/cons.h>
#include <machine/cpu.h>
#include <amiga/amiga/device.h>
#include <amiga/dev/grfioctl.h>
#include <amiga/dev/grfvar.h>
#include <amiga/dev/grf_etreg.h>
#include <amiga/dev/itevar.h>
#ifdef TSENGCONSOLE
int et_console = 1;
#else
int et_console = 0;
#endif
void et_init(struct ite_softc *ip);
void et_cursor(struct ite_softc *ip, int flag);
void et_deinit(struct ite_softc *ip);
void et_putc(struct ite_softc *ip, int c, int dy, int dx, int mode);
void et_clear(struct ite_softc *ip, int sy, int sx, int h, int w);
void et_scroll(struct ite_softc *ip, int sy, int sx, int count, int dir);
static void etbcopy(const volatile void *src, volatile void *dst, size_t len);
/*
* Called to determine ite status. Because the connection between the
* console & ite in this driver is rather intimate, we return CN_DEAD
* if the cl_console is not active.
*/
int
grfet_cnprobe(void)
{
static int done;
int rv;
if (et_console && (done == 0))
rv = CN_INTERNAL;
else
rv = CN_DEAD;
done = 1;
return(rv);
}
void
grfet_iteinit(struct grf_softc *gp)
{
gp->g_iteinit = et_init;
gp->g_itedeinit = et_deinit;
gp->g_iteclear = et_clear;
gp->g_iteputc = et_putc;
gp->g_itescroll = et_scroll;
gp->g_itecursor = et_cursor;
}
void
et_init(struct ite_softc *ip)
{
struct grfettext_mode *md;
ip->priv = ip->grf->g_data;
md = (struct grfettext_mode *) ip->priv;
ip->cols = md->cols;
ip->rows = md->rows;
}
void
et_cursor(struct ite_softc *ip, int flag)
{
volatile u_char *ba = ip->grf->g_regkva;
switch (flag) {
case DRAW_CURSOR:
/*WCrt(ba, CRT_ID_CURSOR_START, & ~0x20); */
case MOVE_CURSOR:
flag = ip->curx + ip->cury * ip->cols;
WCrt(ba, CRT_ID_CURSOR_LOC_LOW, flag & 0xff);
WCrt(ba, CRT_ID_CURSOR_LOC_HIGH, (flag >> 8) & 0xff);
WCrt(ba, CRT_ID_EXT_START, (flag >> (16-2)) & 0x0c);
ip->cursorx = ip->curx;
ip->cursory = ip->cury;
break;
case ERASE_CURSOR:
/*WCrt(ba, CRT_ID_CURSOR_START, | 0x20); */
case START_CURSOROPT:
case END_CURSOROPT:
default:
break;
}
}
void
et_deinit(struct ite_softc *ip)
{
ip->flags &= ~ITE_INITED;
}
void
et_putc(struct ite_softc *ip, int c, int dy, int dx, int mode)
{
volatile unsigned char *ba = ip->grf->g_regkva;
volatile unsigned char *fb = ip->grf->g_fbkva;
unsigned char attr;
volatile unsigned char *cp;
if (ip->flags & ITE_INGRF)
return;
attr =(unsigned char) ((mode & ATTR_INV) ? (0x70) : (0x07));
if (mode & ATTR_UL) attr = 0x01; /* ???????? */
if (mode & ATTR_BOLD) attr |= 0x08;
if (mode & ATTR_BLINK) attr |= 0x80;
cp = fb + ((dy * ip->cols) + dx);
SetTextPlane(ba,0x00);
*cp = (unsigned char) c;
SetTextPlane(ba,0x01);
*cp = (unsigned char) attr;
}
void
et_clear(struct ite_softc *ip, int sy, int sx, int h, int w)
{
/* cl_clear and cl_scroll both rely on ite passing arguments
* which describe continuous regions. For a VT200 terminal,
* this is safe behavior.
*/
volatile unsigned char *src, *dst;
volatile unsigned char *ba = ip->grf->g_regkva;
int len;
if (ip->flags & ITE_INGRF)
return;
dst = (volatile unsigned char*)ip->grf->g_fbkva + (sy * ip->cols) + sx;
src = dst + (ip->rows*ip->cols);
len = w*h;
SetTextPlane(ba, 0x00);
etbcopy(src, dst, len);
SetTextPlane(ba, 0x01);
etbcopy(src, dst, len);
}
void
et_scroll(struct ite_softc *ip, int sy, int sx, int count, int dir)
{
volatile unsigned char *fb;
volatile unsigned char *ba = ip->grf->g_regkva;
if (ip->flags & ITE_INGRF)
return;
fb = (volatile unsigned char*)ip->grf->g_fbkva + sy * ip->cols;
SetTextPlane(ba, 0x00);
switch (dir) {
case SCROLL_UP:
etbcopy(fb, fb - (count * ip->cols),
(ip->bottom_margin + 1 - sy) * ip->cols);
break;
case SCROLL_DOWN:
etbcopy(fb, fb + (count * ip->cols),
(ip->bottom_margin + 1 - (sy + count)) * ip->cols);
break;
case SCROLL_RIGHT:
etbcopy(fb+sx, fb+sx+count, ip->cols - (sx + count));
break;
case SCROLL_LEFT:
etbcopy(fb+sx, fb+sx-count, ip->cols - sx);
break;
}
SetTextPlane(ba, 0x01);
switch (dir) {
case SCROLL_UP:
etbcopy(fb, fb - (count * ip->cols),
(ip->bottom_margin + 1 - sy) * ip->cols);
break;
case SCROLL_DOWN:
etbcopy(fb, fb + (count * ip->cols),
(ip->bottom_margin + 1 - (sy + count)) * ip->cols);
break;
case SCROLL_RIGHT:
etbcopy(fb+sx, fb+sx+count, ip->cols - (sx + count));
break;
case SCROLL_LEFT:
etbcopy(fb+sx, fb+sx-count, ip->cols - sx);
break;
}
}
static void etbcopy(const volatile void *src, volatile void *dst, size_t len)
{
int i;
volatile char *cdst;
volatile const char *csrc;
cdst = (volatile char*)dst;
csrc = (volatile const char*)src;
if (csrc == cdst)
return;
if (csrc > cdst)
for (i=len; i>0; i--) {
*cdst++ = *csrc++;
}
else {
csrc += len;
cdst += len;
for (i=len; i>0; i--){
*--cdst = *--csrc;
}
}
}
#endif /* NGRFET */