edf9d66f32
of bwtwo, cgfour, cgsix, and cgeight. Includes support for attaching the overlay plane of the cgfour and cgeight as a bwtwo instance (a'la SunOS). P4 register descriptions, cgfour driver, and cgeight driver partially derived from OpenBSD. This code may still need polishing.
511 lines
12 KiB
C
511 lines
12 KiB
C
/* $NetBSD: bwtwo.c,v 1.22 1996/02/27 22:09:23 thorpej Exp $ */
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/*
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* Copyright (c) 1996 Jason R. Thorpe. All rights reserved.
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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 software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* 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 the University of
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* California, Lawrence Berkeley Laboratory.
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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 the University of
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* California, Berkeley and its contributors.
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* 4. 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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* @(#)bwtwo.c 8.1 (Berkeley) 6/11/93
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*/
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/*
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* black&white display (bwtwo) driver.
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*
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* Does not handle interrupts, even though they can occur.
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*
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* P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.ORG>.
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* Overlay plane handling hints and ideas provided by Brad Spencer.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/malloc.h>
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#include <sys/mman.h>
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#include <sys/tty.h>
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#include <vm/vm.h>
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#include <machine/fbio.h>
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#include <machine/autoconf.h>
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#include <machine/pmap.h>
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#include <machine/fbvar.h>
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#include <machine/eeprom.h>
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#include <machine/ctlreg.h>
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#include <sparc/sparc/asm.h>
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#include <sparc/dev/btreg.h>
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#include <sparc/dev/bwtworeg.h>
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#include <sparc/dev/sbusvar.h>
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#if defined(SUN4)
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#include <sparc/dev/pfourreg.h>
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#endif
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/* per-display variables */
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struct bwtwo_softc {
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struct device sc_dev; /* base device */
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struct sbusdev sc_sd; /* sbus device */
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struct fbdevice sc_fb; /* frame buffer device */
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volatile struct fbcontrol *sc_reg;/* control registers */
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struct rom_reg sc_phys; /* phys address description */
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int sc_bustype; /* type of bus we live on */
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int sc_pixeloffset; /* offset to framebuffer */
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#if defined(SUN4)
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/*
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* Additional overlay plane goo.
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*/
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int sc_ovtype; /* what kind of color fb? */
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#define BWO_NONE 0x00
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#define BWO_CGFOUR 0x01
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#define BWO_CGEIGHT 0x02
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#endif
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};
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/* autoconfiguration driver */
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static void bwtwoattach __P((struct device *, struct device *, void *));
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static int bwtwomatch __P((struct device *, void *, void *));
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int bwtwoopen __P((dev_t, int, int, struct proc *));
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int bwtwoclose __P((dev_t, int, int, struct proc *));
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int bwtwoioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
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int bwtwommap __P((dev_t, int, int));
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static void bwtwounblank __P((struct device *));
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static void bwtwo_set_video __P((struct bwtwo_softc *, int));
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static int bwtwo_get_video __P((struct bwtwo_softc *));
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struct cfdriver bwtwocd =
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{ NULL, "bwtwo", bwtwomatch, bwtwoattach,
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DV_DULL, sizeof(struct bwtwo_softc) };
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/* XXX we do not handle frame buffer interrupts (do not know how) */
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/* frame buffer generic driver */
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static struct fbdriver bwtwofbdriver = {
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bwtwounblank, bwtwoopen, bwtwoclose, bwtwoioctl, bwtwommap
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};
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extern int fbnode;
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extern struct tty *fbconstty;
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extern int (*v_putc)();
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extern int nullop();
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static int bwtwo_cnputc();
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static struct bwtwo_softc *bwcons;
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/*
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* Match a bwtwo.
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*/
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int
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bwtwomatch(parent, vcf, aux)
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struct device *parent;
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void *vcf, *aux;
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{
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struct cfdata *cf = vcf;
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struct confargs *ca = aux;
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struct romaux *ra = &ca->ca_ra;
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if (CPU_ISSUN4 && cf->cf_unit != 0)
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return (0);
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if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
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return (0);
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/*
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* Mask out invalid flags from the user.
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*/
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cf->cf_flags &= FB_USERMASK;
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if (ca->ca_bustype == BUS_SBUS)
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return(1);
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/*
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* Make sure there's hardware there.
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*/
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if (probeget(ra->ra_vaddr, 4) == -1)
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return (0);
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#if defined(SUN4)
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if (CPU_ISSUN4 && (ca->ca_bustype == BUS_OBIO)) {
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/*
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* Check for a pfour framebuffer.
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*/
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switch (fb_pfour_id(ra->ra_vaddr)) {
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case PFOUR_ID_BW:
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case PFOUR_ID_COLOR8P1: /* bwtwo in ... */
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case PFOUR_ID_COLOR24: /* ...overlay plane */
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cf->cf_flags |= FB_PFOUR;
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/* FALLTHROUGH */
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case PFOUR_NOTPFOUR:
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return (1);
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default:
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return (0);
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}
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}
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#endif
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return (0);
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}
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/*
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* Attach a display. We need to notice if it is the console, too.
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*/
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void
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bwtwoattach(parent, self, args)
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struct device *parent, *self;
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void *args;
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{
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register struct bwtwo_softc *sc = (struct bwtwo_softc *)self;
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register struct confargs *ca = args;
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register int node = ca->ca_ra.ra_node, ramsize;
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struct fbdevice *fb = &sc->sc_fb;
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int isconsole;
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int sbus = 1;
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char *nam;
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fb->fb_driver = &bwtwofbdriver;
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fb->fb_device = &sc->sc_dev;
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fb->fb_type.fb_type = FBTYPE_SUN2BW;
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fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags;
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/*
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* Map the control register.
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*/
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if (fb->fb_flags & FB_PFOUR) {
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fb->fb_pfour =
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(volatile u_int32_t *)mapiodev(ca->ca_ra.ra_reg, 0,
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sizeof(u_int32_t), ca->ca_bustype);
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sc->sc_reg = NULL;
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} else {
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sc->sc_reg =
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(volatile struct fbcontrol *)mapiodev(ca->ca_ra.ra_reg,
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BWREG_REG, sizeof(struct fbcontrol), ca->ca_bustype);
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fb->fb_pfour = NULL;
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}
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/* Set up default pixel offset. May be changed below. */
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sc->sc_pixeloffset = BWREG_MEM;
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switch (ca->ca_bustype) {
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case BUS_OBIO:
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if (CPU_ISSUN4M) /* 4m has framebuffer on obio */
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goto obp_name;
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sbus = node = 0;
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#if defined(SUN4)
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if (fb->fb_flags & FB_PFOUR) {
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nam = "bwtwo/p4";
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/*
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* Notice if this is an overlay plane on a color
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* framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY
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* is the same as PFOUR_BW_OFF, but we use the
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* different names anyway.
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*/
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switch (PFOUR_ID(*fb->fb_pfour)) {
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case PFOUR_ID_COLOR8P1:
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sc->sc_ovtype = BWO_CGFOUR;
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sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY;
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break;
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case PFOUR_ID_COLOR24:
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sc->sc_ovtype = BWO_CGEIGHT;
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sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY;
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break;
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default:
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sc->sc_ovtype = BWO_NONE;
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sc->sc_pixeloffset = PFOUR_BW_OFF;
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break;
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}
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} else
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#endif
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nam = "bwtwo";
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break;
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case BUS_VME32:
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case BUS_VME16:
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sbus = node = 0;
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nam = "bwtwo";
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break;
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case BUS_SBUS:
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obp_name:
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#if defined(SUN4C) || defined(SUN4M)
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nam = getpropstring(node, "model");
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#endif
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break;
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}
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sc->sc_phys = ca->ca_ra.ra_reg[0];
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sc->sc_bustype = ca->ca_bustype;
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fb->fb_type.fb_depth = 1;
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fb_setsize(fb, fb->fb_type.fb_depth, 1152, 900, node, ca->ca_bustype);
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ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
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fb->fb_type.fb_cmsize = 0;
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fb->fb_type.fb_size = ramsize;
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printf(": %s, %d x %d", nam,
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fb->fb_type.fb_width, fb->fb_type.fb_height);
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#if defined(SUN4)
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if (CPU_ISSUN4) {
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struct eeprom *eep = (struct eeprom *)eeprom_va;
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int constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT :
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EE_CONS_BW;
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/*
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* Assume this is the console if there's no eeprom info
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* to be found.
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*/
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if (eep == NULL || eep->eeConsole == constype)
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isconsole = (fbconstty != NULL);
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else
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isconsole = 0;
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}
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#endif
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if (CPU_ISSUN4COR4M)
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isconsole = node == fbnode && fbconstty != NULL;
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/*
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* When the ROM has mapped in a bwtwo display, the address
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* maps only the video RAM, hence we always map the control
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* registers ourselves. We only need the video RAM if we are
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* going to print characters via rconsole.
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*/
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if ((fb->fb_pixels = ca->ca_ra.ra_vaddr) == NULL && isconsole) {
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/* this probably cannot happen (on sun4c), but what the heck */
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fb->fb_pixels =
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mapiodev(ca->ca_ra.ra_reg, sc->sc_pixeloffset,
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ramsize, ca->ca_bustype);
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}
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/* Insure video is enabled */
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bwtwo_set_video(sc, 1);
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if (isconsole) {
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printf(" (console)\n");
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#ifdef RASTERCONSOLE
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fbrcons_init(fb);
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#endif
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} else
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printf("\n");
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#if defined(SUN4C) || defined(SUN4M)
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if (sbus)
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sbus_establish(&sc->sc_sd, &sc->sc_dev);
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#endif
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#if defined(SUN4)
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if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE)) {
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char *ovnam;
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switch (sc->sc_ovtype) {
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case BWO_CGFOUR:
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ovnam = "cgfour";
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break;
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case BWO_CGEIGHT:
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ovnam = "cgeight";
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break;
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default:
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ovnam = "unknown";
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break;
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}
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printf("%s: %s overlay plane\n", sc->sc_dev.dv_xname, ovnam);
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}
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#endif
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if (CPU_ISSUN4 || node == fbnode) {
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#if defined(SUN4)
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/*
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* If we're on an overlay plane of a color framebuffer,
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* then we don't force the issue in fb_attach() because
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* we'd like the color framebuffer to actually be the
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* "console framebuffer". We're only around to speed
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* up rconsole.
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*/
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if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE ))
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fb_attach(fb, 0);
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else
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#endif
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fb_attach(fb, isconsole);
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}
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}
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int
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bwtwoopen(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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int unit = minor(dev);
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if (unit >= bwtwocd.cd_ndevs || bwtwocd.cd_devs[unit] == NULL)
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return (ENXIO);
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return (0);
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}
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int
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bwtwoclose(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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return (0);
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}
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int
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bwtwoioctl(dev, cmd, data, flags, p)
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dev_t dev;
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u_long cmd;
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caddr_t data;
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int flags;
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struct proc *p;
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{
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struct bwtwo_softc *sc = bwtwocd.cd_devs[minor(dev)];
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switch (cmd) {
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case FBIOGTYPE:
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*(struct fbtype *)data = sc->sc_fb.fb_type;
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break;
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case FBIOGVIDEO:
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*(int *)data = bwtwo_get_video(sc);
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break;
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case FBIOSVIDEO:
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bwtwo_set_video(sc, (*(int *)data));
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break;
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default:
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return (ENOTTY);
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}
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return (0);
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}
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static void
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bwtwounblank(dev)
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struct device *dev;
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{
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struct bwtwo_softc *sc = (struct bwtwo_softc *)dev;
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bwtwo_set_video(sc, 1);
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}
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/*
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* Return the address that would map the given device at the given
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* offset, allowing for the given protection, or return -1 for error.
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*/
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int
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bwtwommap(dev, off, prot)
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dev_t dev;
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int off, prot;
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{
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register struct bwtwo_softc *sc = bwtwocd.cd_devs[minor(dev)];
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if (off & PGOFSET)
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panic("bwtwommap");
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if ((unsigned)off >= sc->sc_fb.fb_type.fb_size)
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return (-1);
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/*
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* I turned on PMAP_NC here to disable the cache as I was
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* getting horribly broken behaviour with it on.
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*/
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return (REG2PHYS(&sc->sc_phys, sc->sc_pixeloffset + off,
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sc->sc_bustype) | PMAP_NC);
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}
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static int
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bwtwo_get_video(sc)
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struct bwtwo_softc *sc;
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{
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#if defined(SUN4)
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if (CPU_ISSUN4 && (sc->sc_bustype == BUS_OBIO)) {
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if (sc->sc_fb.fb_flags & FB_PFOUR) {
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/*
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* This handles the overlay plane case, too.
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*/
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return (fb_pfour_get_video(&sc->sc_fb));
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} else
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return ((lduba(AC_SYSENABLE,
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ASI_CONTROL) & SYSEN_VIDEO) != 0);
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}
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#endif
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return ((sc->sc_reg->fbc_ctrl & FBC_VENAB) != 0);
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}
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static void
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bwtwo_set_video(sc, enable)
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struct bwtwo_softc *sc;
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int enable;
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{
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#if defined(SUN4)
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if (CPU_ISSUN4 && (sc->sc_bustype == BUS_OBIO)) {
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if (sc->sc_fb.fb_flags & FB_PFOUR) {
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/*
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* This handles the overlay plane case, too.
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*/
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fb_pfour_set_video(&sc->sc_fb, enable);
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return;
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}
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if (enable)
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stba(AC_SYSENABLE, ASI_CONTROL,
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lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO);
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else
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stba(AC_SYSENABLE, ASI_CONTROL,
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lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO);
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return;
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}
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#endif
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if (enable)
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sc->sc_reg->fbc_ctrl |= FBC_VENAB;
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else
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sc->sc_reg->fbc_ctrl &= ~FBC_VENAB;
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}
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