NetBSD/sys/arch/hp300/dev/grf_dv.c

193 lines
5.2 KiB
C

/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990 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. 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_dv.c 1.10 91/04/02
* from: @(#)grf_dv.c 7.4 (Berkeley) 5/7/91
* $Id: grf_dv.c,v 1.2 1993/08/01 19:24:09 mycroft Exp $
*/
#include "grf.h"
#if NGRF > 0
/*
* Graphics routines for the DaVinci, HP98730/98731 Graphics system.
*/
#include "sys/param.h"
#include "sys/errno.h"
#include "grfioctl.h"
#include "grfvar.h"
#include "grf_dvreg.h"
#include "../include/cpu.h"
/*
* Initialize hardware.
* Must point g_display at a grfinfo structure describing the hardware.
* Returns 0 if hardware not present, non-zero ow.
*/
dv_init(gp, addr)
struct grf_softc *gp;
caddr_t addr;
{
register struct dvboxfb *dbp;
struct grfinfo *gi = &gp->g_display;
int fboff;
extern caddr_t sctopa(), iomap();
dbp = (struct dvboxfb *) addr;
if (ISIIOVA(addr))
gi->gd_regaddr = (caddr_t) IIOP(addr);
else
gi->gd_regaddr = sctopa(vatosc(addr));
gi->gd_regsize = 0x20000;
gi->gd_fbwidth = (dbp->fbwmsb << 8) | dbp->fbwlsb;
gi->gd_fbheight = (dbp->fbhmsb << 8) | dbp->fbhlsb;
gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight;
fboff = (dbp->fbomsb << 8) | dbp->fbolsb;
gi->gd_fbaddr = (caddr_t) (*((u_char *)addr + fboff) << 16);
if (gi->gd_regaddr >= (caddr_t)DIOIIBASE) {
/*
* For DIO II space the fbaddr just computed is the offset
* from the select code base (regaddr) of the framebuffer.
* Hence it is also implicitly the size of the register set.
*/
gi->gd_regsize = (int) gi->gd_fbaddr;
gi->gd_fbaddr += (int) gi->gd_regaddr;
gp->g_regkva = addr;
gp->g_fbkva = addr + gi->gd_regsize;
} else {
/*
* For DIO space we need to map the seperate framebuffer.
*/
gp->g_regkva = addr;
gp->g_fbkva = iomap(gi->gd_fbaddr, gi->gd_fbsize);
}
gi->gd_dwidth = (dbp->dwmsb << 8) | dbp->dwlsb;
gi->gd_dheight = (dbp->dwmsb << 8) | dbp->dwlsb;
gi->gd_planes = 0; /* ?? */
gi->gd_colors = 256;
dv_reset(dbp);
return(1);
}
/*
* Magic code herein.
*/
dv_reset(dbp)
register struct dvboxfb *dbp;
{
dbp->reset = 0x80;
DELAY(100);
dbp->interrupt = 0x04;
dbp->en_scan = 0x01;
dbp->fbwen = ~0;
dbp->opwen = ~0;
dbp->fold = 0x01;
dbp->drive = 0x01;
dbp->rep_rule = 0x33;
dbp->alt_rr = 0x33;
dbp->zrr = 0x33;
dbp->fbvenp = 0xFF;
dbp->dispen = 0x01;
dbp->fbvens = 0x0;
dbp->fv_trig = 0x01;
DELAY(100);
dbp->vdrive = 0x0;
dbp->zconfig = 0x0;
while (dbp->wbusy & 0x01)
DELAY(100);
dbp->cmapbank = 0;
dbp->red0 = 0;
dbp->red1 = 0;
dbp->green0 = 0;
dbp->green1 = 0;
dbp->blue0 = 0;
dbp->blue1 = 0;
dbp->panxh = 0;
dbp->panxl = 0;
dbp->panyh = 0;
dbp->panyl = 0;
dbp->zoom = 0;
dbp->cdwidth = 0x50;
dbp->chstart = 0x52;
dbp->cvwidth = 0x22;
dbp->pz_trig = 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.
*/
dv_mode(gp, cmd)
register struct grf_softc *gp;
{
register struct dvboxfb *dbp;
int error = 0;
dbp = (struct dvboxfb *) gp->g_regkva;
switch (cmd) {
case GM_GRFON:
dbp->dispen = 0x01;
break;
case GM_GRFOFF:
break;
case GM_GRFOVON:
dbp->opwen = 0xF;
dbp->drive = 0x10;
break;
case GM_GRFOVOFF:
dbp->opwen = 0;
dbp->drive = 0x01;
break;
default:
error = EINVAL;
break;
}
return(error);
}
#endif