NetBSD/sys/dev/tc/stic.c

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/* $NetBSD: stic.c,v 1.1 1997/11/11 04:47:57 jonathan Exp $ */
/*
* Copyright (c) 1997 Jonathan Stone
* 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 Jonathan Stone for
* the NetBSD Project.
* 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.
*/
/*
* Some portions derived from Mach: ga_hdw.c 2.5 93/05/17 15:16:52 rvb
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* HISTORY
* $Log: stic.c,v $
* Revision 1.1 1997/11/11 04:47:57 jonathan
* chipset driver for DEC pixelstamp and STIC (stamp Interface chip).
*
* Revision 2.3 93/02/05 08:06:14 danner
* Mods to *compile* on Flamingo.
* [93/02/04 01:51:39 af]
*
* Revision 2.2 92/05/22 15:47:02 jfriedl
* Disable interrupts on exit.
* [92/05/20 22:53:19 af]
*
* Created, with some Ultrix code.
* [92/05/09 af]
*
*/
/*
* File: ga_misc.c
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 5/92
*
* Driver for the PMAG-CA 2D graphic board.
*
*/
/************************************************************************
* *
* Copyright (c) 1989 by *
* Digital Equipment Corporation, Maynard, MA *
* All rights reserved. *
* *
* This software is furnished under a license and may be used and *
* copied only in accordance with the terms of such license and *
* with the inclusion of the above copyright notice. This *
* software or any other copies thereof may not be provided or *
* otherwise made available to any other person. No title to and *
* ownership of the software is hereby transferred. *
* *
* The information in this software is subject to change without *
* notice and should not be construed as a commitment by Digital *
* Equipment Corporation. *
* *
* Digital assumes no responsibility for the use or reliability *
* of its software on equipment which is not supplied by Digital. *
* *
************************************************************************/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: stic.c,v 1.1 1997/11/11 04:47:57 jonathan Exp $");
/*
* Support for the DEC pixelstamp and stamp asic (STIC)
* chips used on 2-D (PMAG-C) and 3-D (PMAG-D, PMAG-E, PMAG-F)
* DEC turbochannel option cards.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <dev/tc/tcvar.h>
#include <dev/tc/sticvar.h>
#include <machine/cpu.h>
#include <machine/bus.h>
int stic_init __P((struct stic_softc *stic_sc));
int
stic_init(stic_sc)
struct stic_softc *stic_sc;
{
int modtype, xconfig, yconfig, config;
volatile struct stic_regs *stic = STICADDR(stic_sc->stic_addr);
void *stamp_addr = (void*)(stic_sc->stamp_addr);
/*
* Initialize STIC interface chip registers.
* magic sequence from logic analyser.
*/
stic->sticsr = 0x00000030; /* Get the STIC's attention. */
tc_wmb();
DELAY(4000); /* wait 4ms for STIC to respond. */
stic->sticsr = 0x00000000; /* Hit the STIC's csr again... */
stic->buscsr = 0xffffffff; /* and bash its bus-acess csr. */
tc_wmb(); /* Blam! */
DELAY(20000); /* wait until the stic recovers... */
#ifdef notyet
/* init vdac */
bt459_init(stic_sc->vdac_addr);
#endif
/*
* the following code is taken from Mach 3.0 MK85 source.
*/
/*
* Initialize Stamp config register for model 0.
*/
modtype = stic->modcl;
xconfig = (modtype & 0x800) >> 11;
yconfig = (modtype & 0x600) >> 9;
config = (yconfig << 1) | xconfig;
/* stamp0 config */
*(int32_t *)(stamp_addr+0x000b0) = config;
*(int32_t *)(stamp_addr+0x000b4) = 0x0;
if (yconfig > 0) {
/*
* pixelstamp v1 configuration
*/
*(int *)(stamp_addr+0x100b0) = 0x8|config;
*(int *)(stamp_addr+0x100b4) = 0x0;
if (yconfig > 1) {
/* pixelstamp v2 & v3 config */
}
}
/*
* Initialize STIC video registers.
* (if we knew what we were doing, we might be able to frob this
* to work at different montior frequencies.)
*/
stic->vblank = (1024 << 16) | 1063;
stic->vsync = (1027 << 16) | 1030;
stic->hblank = (255 << 16) | 340;
stic->hsync2 = 245;
stic->hsync = (261 << 16) | 293;
tc_wmb(); /* wbflush() */
stic->ipdvint = STIC_INT_CLR;
stic->sticsr = 0x00000008;
tc_wmb(); /* wbflush() */
return (0);
}