NetBSD-5.0.2/sys/arch/x68k/dev/grf_gv.c
/* $NetBSD: grf_gv.c,v 1.13 2007/12/31 13:38:53 ad Exp $ */
/*
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* from: Utah $Hdr: grf_tc.c 1.20 93/08/13$
*
* @(#)grf_tc.c 8.4 (Berkeley) 1/12/94
*/
/*
* Copyright (c) 1988 University of Utah.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* from: Utah $Hdr: grf_tc.c 1.20 93/08/13$
*
* @(#)grf_tc.c 8.4 (Berkeley) 1/12/94
*/
/*
* Graphics routines for the X68K native custom chip set.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: grf_gv.c,v 1.13 2007/12/31 13:38:53 ad Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/errno.h>
#include <machine/grfioctl.h>
#include <x68k/dev/grfvar.h>
#include <x68k/x68k/iodevice.h>
#include <machine/cpu.h>
int gv_init(struct grf_softc *, void *);
int gv_mode(struct grf_softc *, u_long, void *);
/* Initialize hardware.
* Must fill in the grfinfo structure in g_softc.
* Returns 0 if hardware not present, non-zero ow.
*/
int
gv_init(struct grf_softc *gp, void *addr)
{
struct grfinfo *gi = &gp->g_display;
gi->gd_fbwidth = 1024;
gi->gd_fbheight = 1024;
gi->gd_planes = 4;
gi->gd_regaddr = (void *)0x00e80000;
gi->gd_regsize = 0x00010000; /* contains system port */
gi->gd_fbaddr = (void *)0x00c00000;
gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight * 2;
gp->g_regkva = addr;
gp->g_fbkva = addr;
switch(IODEVbase->io_sram[0x1d]) {
case 18:
/*
* mode 18, 24kHz
*/
gi->gd_dwidth = 1024;
gi->gd_dheight = 848;
break;
case 19:
/*
* mode 19, 31kHz VGA mode
*/
gi->gd_dwidth = 640;
gi->gd_dheight = 480;
break;
default:
/*
* mode 16, 31kHz (default)
*/
gi->gd_dwidth = 768;
gi->gd_dheight = 512;
break;
}
gi->gd_colors = 16;
return 1;
}
/*
* Change the mode of the display.
* Right now all we can do is grfon/grfoff.
* Return a UNIX error number or 0 for success.
*/
/*ARGSUSED*/
int
gv_mode(struct grf_softc *gp, u_long cmd, void *data)
{
int error = 0;
switch (cmd) {
case GM_GRFON:
case GM_GRFOFF:
break;
/*
* Remember UVA of mapping for GCDESCRIBE.
* XXX this should be per-process.
*/
case GM_MAP:
gp->g_data = data;
break;
case GM_UNMAP:
gp->g_data = 0;
break;
case GM_GRFSETVMODE:
if (*(int *)data == 1) {
struct grfinfo *gi = &gp->g_display;
volatile struct crtc *crtc = &IODEVbase->io_crtc;
/* Reset CRTC, set dwidth and dheight accordingly */
crtc->r20 = (crtc->r20 & 0xFF00) | 0x1a;
crtc->r08 = 0x1b;
crtc->r07 = 0x19c;
crtc->r06 = 0x1c;
crtc->r05 = 0x02;
crtc->r04 = 0x019f;
crtc->r03 = 0x9a;
crtc->r02 = 0x1a;
crtc->r01 = 0x09;
crtc->r00 = 0xa4;
gi->gd_dwidth = 1024;
gi->gd_dheight = 768;
}
break;
default:
error = EINVAL;
break;
}
return error;
}