NetBSD/sys/arch/pmax/dev/sfb.c

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/* $NetBSD: sfb.c,v 1.24 1998/03/31 11:32:53 jonathan Exp $ */
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* 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: @(#)sfb.c 8.1 (Berkeley) 6/10/93
*/
/*
* devGraphics.c --
*
* This file contains machine-dependent routines for the graphics device.
*
* Copyright (C) 1989 Digital Equipment Corporation.
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies.
* Digital Equipment Corporation makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* from: Header: /sprite/src/kernel/dev/ds3100.md/RCS/devGraphics.c,
* v 9.2 90/02/13 22:16:24 shirriff Exp SPRITE (DECWRL)";
*/
/*
* 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
* 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 the
* rights to redistribute these changes.
*/
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#include "fb.h"
#include "sfb.h"
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#include <sys/param.h>
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#include <sys/systm.h> /* printf() */
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#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <dev/tc/tcvar.h>
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#include <machine/autoconf.h>
#include <machine/fbio.h>
#include <machine/fbvar.h>
#include <pmax/dev/sfbvar.h> /* XXX dev/tc ? */
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#include <pmax/dev/bt459.h>
#include <pmax/dev/sfbreg.h>
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#include <mips/cpuregs.h> /* mips cached->uncached */
#include <machine/pmioctl.h>
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#include <pmax/dev/fbreg.h>
/*
* These need to be mapped into user space.
*/
struct fbuaccess sfbu;
struct pmax_fbtty sfbfb;
struct fbinfo sfbfi; /*XXX*/ /* should be softc */
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/*
* Forward references.
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*/
int sfbinit __P((struct fbinfo *fi, caddr_t sfbaddr, int unit, int silent));
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#define CMAP_BITS (3 * 256) /* 256 entries, 3 bytes per. */
static u_char cmap_bits [CMAP_BITS]; /* colormap for console... */
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int sfbmatch __P((struct device *, struct cfdata *, void *));
void sfbattach __P((struct device *, struct device *, void *));
int sfb_intr __P((void *sc));
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struct cfattach sfb_ca = {
sizeof(struct fbinfo), sfbmatch, sfbattach
};
struct fbdriver sfb_driver = {
bt459_video_on,
bt459_video_off,
bt459InitColorMap,
bt459GetColorMap,
bt459LoadColorMap,
bt459PosCursor,
bt459LoadCursor,
bt459CursorColor
};
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/* match and attach routines cut-and-pasted from cfb */
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int
sfbmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
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{
struct tc_attach_args *ta = aux;
/* make sure that we're looking for this type of device. */
if (!TC_BUS_MATCHNAME(ta, "PMAGB-BA"))
return (0);
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/*
* if the TC rom ident matches, assume the VRAM is present too.
*/
#if 0
if (badaddr( ((caddr_t)ta->ta_addr) + SFB_OFFSET_VRAM, 4))
return (0);
#endif
return (1);
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}
/*
* Attach a device. Hand off all the work to sfbinit(),
* so console-config code can attach sfbs early in boot.
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*/
void
sfbattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
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{
struct tc_attach_args *ta = aux;
caddr_t sfbaddr = (caddr_t)ta->ta_addr;
int unit = self->dv_unit;
struct fbinfo *fi = (struct fbinfo *) self;
#ifdef notyet
/* if this is the console, it's already configured. */
if (ta->ta_cookie == cons_slot)
return; /* XXX patch up f softc pointer */
#endif
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if (!sfbinit(fi, sfbaddr, unit, 0))
return;
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#if 0 /*XXX*/
/*
* Sean Davidson (davidson@sean.zk3.dec.com) reports this
* isn't sufficient on a 3MIN, Use an interrupt handler instead.
*/
*(sfbaddr + SFB_INTERRUPT_ENABLE) = 0;
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#endif
/*
* 3MIN does not mask un-established TC option interrupts,
* so establish a handler.
* XXX Should store cmap updates in softc and apply in the
* interrupt handler, which interrupts during vertical-retrace.
*/
tc_intr_establish(parent, ta->ta_cookie, TC_IPL_NONE, sfb_intr, fi);
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printf("\n");
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}
/*
* Initialization
*/
int
sfbinit(fi, base, unit, silent)
struct fbinfo *fi;
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char *base;
int unit;
int silent;
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{
/*
* If this device is being intialized as the console, malloc()
* is not yet up and we must use statically-allocated space.
*/
if (fi == NULL) {
fi = &sfbfi; /* XXX */
fi->fi_cmap_bits = (caddr_t)cmap_bits;
}
else {
fi->fi_cmap_bits = malloc(CMAP_BITS, M_DEVBUF, M_NOWAIT);
if (fi->fi_cmap_bits == NULL) {
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printf("sfb%d: no memory for cmap\n", unit);
return (0);
}
}
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/* check for no frame buffer */
if (badaddr(base + SFB_OFFSET_VRAM, 4))
return (0);
/* Fill in main frame buffer info struct. */
fi->fi_unit = unit;
fi->fi_pixels = (caddr_t)(base + SFB_OFFSET_VRAM);
fi->fi_pixelsize = 1280 * 1024;
fi->fi_base = (caddr_t)(base + SFB_ASIC_OFFSET);
fi->fi_vdac = (caddr_t)(base + SFB_OFFSET_BT459);
fi->fi_size = (fi->fi_pixels + SFB_FB_SIZE) - fi->fi_base;
fi->fi_linebytes = 1280;
fi->fi_driver = &sfb_driver;
fi->fi_blanked = 0;
/* Fill in Frame Buffer Type struct. */
fi->fi_type.fb_boardtype = PMAX_FBTYPE_SFB;
fi->fi_type.fb_height = 1024;
fi->fi_type.fb_width = 1280;
fi->fi_type.fb_depth = 8;
fi->fi_type.fb_cmsize = 256;
fi->fi_type.fb_size = SFB_FB_SIZE;
/* Initialize the RAMDAC. */
bt459init (fi);
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/* Initialize the SFB ASIC... */
*((int *)(base + SFB_MODE)) = 0;
*((int *)(base + SFB_PLANEMASK)) = 0xFFFFFFFF;
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/* XXX below, up to fbconnect(), cut-and-pasted from cfb */
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/*
* qvss/pm-style mmap()ed event queue compatibility glue
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*/
/*
* Must be in Uncached space since the fbuaccess structure is
* mapped into the user's address space uncached.
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*/
fi->fi_fbu = (struct fbuaccess *)
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. */
fi->fi_fbu->scrInfo.max_row = 67;
fi->fi_fbu->scrInfo.max_col = 80;
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init_pmaxfbu(fi);
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/*
* Initialize old-style pmax glass-tty screen info.
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*/
fi->fi_glasstty = &sfbfb;
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/*
* Initialize the color map, the screen, and the mouse.
*/
if (tb_kbdmouseconfig(fi)) {
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printf(" (mouse/keyboard config failed)");
return (0);
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}
/*sfbInitColorMap();*/ /* done by bt459init() */
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/*
* Connect to the raster-console pseudo-driver
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*/
fbconnect ("PMAGB-BA", fi, silent);
return (1);
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}
/*
* The TURBOChannel sfb interrupts by default on every vertical retrace,
* and we don't know to disable those interrupt requests.
* The 4.4BSD/pamx kernel never enabled delivery of those interrupts from the TC bus,
* but there's a kernel design bug on the 3MIN, where disabling
* (or enabling) TC option interrupts has no effect; each slot interrupt is
* mapped directly to a separate R3000 interrupt and they always seem to be taken.
*
* This function simply dismisses SFB interrupts, or the interrupt
* request from the card will still be active.
*/
int
sfb_intr(sc)
void *sc;
{
struct fbinfo *fi = (struct fbinfo *)sc;
char *slot_addr = (((char *)fi->fi_base) - SFB_ASIC_OFFSET);
/* reset vertical-retrace interrupt by writing a dont-care */
*(int*) (slot_addr + SFB_CLEAR) = 0;
return (0);
}
/* old bt459 code used to be here */