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