336 lines
9.4 KiB
C
336 lines
9.4 KiB
C
/* $NetBSD: sfb.c,v 1.42 2003/08/07 16:29:10 agc Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell and Rick Macklem.
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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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)sfb.c 8.1 (Berkeley) 6/10/93
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*/
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/*
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* devGraphics.c --
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*
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* This file contains machine-dependent routines for the graphics device.
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*
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* Copyright (C) 1989 Digital Equipment Corporation.
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appears in all copies.
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* Digital Equipment Corporation makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* from: Header: /sprite/src/kernel/dev/ds3100.md/RCS/devGraphics.c,
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* v 9.2 90/02/13 22:16:24 shirriff Exp SPRITE (DECWRL)";
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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 the
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* rights to redistribute these changes.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: sfb.c,v 1.42 2003/08/07 16:29:10 agc Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <dev/tc/tcvar.h>
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#include <machine/autoconf.h>
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#include <dev/sun/fbio.h>
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#include <machine/fbvar.h>
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#include <machine/pmioctl.h>
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#include <pmax/dev/bt459.h>
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#include <pmax/dev/fbreg.h>
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#include <pmax/dev/sfbvar.h> /* XXX dev/tc ? */
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#include <pmax/dev/sfbreg.h>
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/* turn on SFB-driver debugging */
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/* #define SFBDEBUG */
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/*
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* These need to be mapped into user space.
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*/
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static struct fbuaccess sfbu;
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static struct pmax_fbtty sfbfb;
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static struct fbinfo *sfb_fi;
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/*
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* Forward references.
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*/
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static int sfbmatch __P((struct device *, struct cfdata *, void *));
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static void sfbattach __P((struct device *, struct device *, void *));
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static int sfbinit __P((struct fbinfo *, caddr_t, int, int));
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static int sfb_intr __P((void *sc));
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CFATTACH_DECL(sfb, sizeof(struct fbinfo),
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sfbmatch, sfbattach, NULL, NULL);
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struct fbdriver sfb_driver = {
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bt459_video_on,
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bt459_video_off,
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bt459InitColorMap,
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bt459GetColorMap,
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bt459LoadColorMap,
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bt459PosCursor,
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bt459LoadCursor,
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bt459CursorColor
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};
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int
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sfb_cnattach(addr)
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paddr_t addr;
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{
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struct fbinfo *fi;
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caddr_t base;
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base = (caddr_t)MIPS_PHYS_TO_KSEG1(addr);
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fbcnalloc(&fi);
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if (sfbinit(fi, base, 0, 1) < 0)
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return (0);
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sfb_fi = fi;
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return (1);
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}
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/* match and attach routines cut-and-pasted from cfb */
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static int
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sfbmatch(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct tc_attach_args *ta = aux;
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/* make sure that we're looking for this type of device. */
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if (!TC_BUS_MATCHNAME(ta, "PMAGB-BA"))
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return (0);
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return (1);
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}
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/*
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* Attach a device. Hand off all the work to sfbinit(),
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* so console-config code can attach sfbs early in boot.
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*/
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static void
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sfbattach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct tc_attach_args *ta = aux;
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caddr_t sfbaddr = (caddr_t)ta->ta_addr;
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int unit = self->dv_unit;
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struct fbinfo *fi;
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if (sfb_fi)
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fi = sfb_fi;
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else {
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if (fballoc(&fi) < 0 || sfbinit(fi, sfbaddr, unit, 0) < 0)
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return; /* failed */
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}
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((struct fbsoftc *)self)->sc_fi = fi;
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printf(": %dx%dx%d%s",
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fi->fi_type.fb_width,
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fi->fi_type.fb_height,
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fi->fi_type.fb_depth,
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(sfb_fi) ? " console" : "");
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#if 0 /*XXX*/
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/*
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* Sean Davidson (davidson@sean.zk3.dec.com) reports this
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* isn't sufficient on a 3MIN, Use an interrupt handler instead.
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*/
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*(sfbaddr + SFB_INTERRUPT_ENABLE) = 0;
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#endif
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/*
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* 3MIN does not mask un-established TC option interrupts,
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* so establish a handler.
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* XXX Should store cmap updates in softc and apply in the
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* interrupt handler, which interrupts during vertical-retrace.
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*/
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tc_intr_establish(parent, ta->ta_cookie, TC_IPL_NONE, sfb_intr, fi);
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printf("\n");
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}
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/*
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* Initialization
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*/
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static int
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sfbinit(fi, base, unit, silent)
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struct fbinfo *fi;
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char *base;
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int unit;
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int silent;
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{
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int h_setup, v_setup;
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int x_pixels, y_pixels; /* visible pixel dimensions */
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/* check for no frame buffer */
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if (badaddr(base + SFB_OFFSET_VRAM, 4))
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return (0);
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/* fetch sfb h_setup and v_setup for pixel dimensions */
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h_setup = * (u_int32_t*) ( ((caddr_t)base) + SFB_VHORIZONTAL);
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v_setup = * (u_int32_t*) ( ((caddr_t)base) + SFB_VVERTICAL);
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x_pixels = (h_setup & 0x01ff) << 2;
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y_pixels = (v_setup & 0x07ff);
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#if defined(DEBUG) || defined(SFBDEBUG)
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printf(" (%d x %d pixels) ", x_pixels, y_pixels);
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#endif
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/* Fill in main frame buffer info struct. */
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fi->fi_unit = unit;
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fi->fi_pixels = (caddr_t)(base + SFB_OFFSET_VRAM);
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fi->fi_pixelsize = x_pixels * y_pixels;
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fi->fi_base = (caddr_t)(base + SFB_ASIC_OFFSET);
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fi->fi_vdac = (caddr_t)(base + SFB_OFFSET_BT459);
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fi->fi_size = (fi->fi_pixels + SFB_FB_SIZE) - fi->fi_base;
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fi->fi_linebytes = x_pixels;
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fi->fi_driver = &sfb_driver;
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fi->fi_blanked = 0;
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/* Fill in Frame Buffer Type struct. */
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fi->fi_type.fb_type = PMAX_FBTYPE_SFB;
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fi->fi_type.fb_width = x_pixels;
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fi->fi_type.fb_height = y_pixels;
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fi->fi_type.fb_depth = 8;
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fi->fi_type.fb_cmsize = 256;
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fi->fi_type.fb_size = SFB_FB_SIZE;
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/* Initialize the RAMDAC. */
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bt459init (fi);
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/* Initialize the SFB ASIC... */
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*((int *)(base + SFB_MODE)) = 0;
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*((int *)(base + SFB_PLANEMASK)) = 0xFFFFFFFF;
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/* XXX below, up to fbconnect(), cut-and-pasted from cfb */
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/*
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* qvss/pm-style mmap()ed event queue compatibility glue
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*/
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/*
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* Must be in Uncached space since the fbuaccess structure is
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* mapped into the user's address space uncached.
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*/
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fi->fi_fbu = (struct fbuaccess *)
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MIPS_PHYS_TO_KSEG1(MIPS_KSEG0_TO_PHYS(&sfbu));
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/* This is glass-tty state but it's in the shared structure. Ick. */
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fi->fi_fbu->scrInfo.max_row = fi->fi_type.fb_height / 15 - 1;
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fi->fi_fbu->scrInfo.max_col = 80;
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#if defined(DEBUG) || defined(SFBDEBUG)
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printf(" (tty %d rows by %d cols) ",
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fi->fi_fbu->scrInfo.max_row, fi->fi_fbu->scrInfo.max_col);
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#endif
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init_pmaxfbu(fi);
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/*
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* Initialize old-style pmax glass-tty screen info.
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*/
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fi->fi_glasstty = &sfbfb;
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/*
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* Initialize the color map, the screen, and the mouse.
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*/
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if (tb_kbdmouseconfig(fi)) {
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return (-1);
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}
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fbconnect(fi);
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return (0);
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}
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/*
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* The TURBOChannel sfb interrupts by default on every vertical retrace,
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* and we don't know to disable those interrupt requests.
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* The 4.4BSD/pmax kernel never enabled delivery of those interrupts
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* from the TC bus, but there's a kernel design bug on the 3MIN, where
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* disabling (or enabling) TC option interrupts has no effect; each slot
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* interrupt is mapped directly to a separate R3000 interrupt and they
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* always seem to be taken.
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*
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* This function simply dismisses SFB interrupts, or the interrupt
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* request from the card will still be active.
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*/
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static int
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sfb_intr(sc)
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void *sc;
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{
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struct fbinfo *fi;
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char *slot_addr;
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fi = (struct fbinfo *)sc;
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slot_addr = (((char *)fi->fi_base) - SFB_ASIC_OFFSET);
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/* reset vertical-retrace interrupt by writing a dont-care */
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*(int*) (slot_addr + SFB_CLEAR) = 0;
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return (0);
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}
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/* old bt459 code used to be here */
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