NetBSD/sys/arch/sun3/dev/cg2.c

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1995-04-10 11:04:18 +04:00
/* $NetBSD: cg2.c,v 1.4 1995/04/10 07:05:57 mycroft Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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: @(#)cgthree.c 8.2 (Berkeley) 10/30/93
*/
/*
* color display (cg2) driver.
*
* Does not handle interrupts, even though they can occur.
*
* XXX should defer colormap updates to vertical retrace interrupts
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/tty.h>
#include <vm/vm.h>
#include <machine/fbio.h>
#include <machine/autoconf.h>
#include <machine/pmap.h>
#include <machine/cg2reg.h>
#include "fbvar.h"
#define CMSIZE 256
/* offset to and size of mapped part of frame buffer */
#define PLANEMAP_SIZE 0x100000
#define PIXELMAP_SIZE 0x100000
#define ROWOPMAP_SIZE 0x100000
#define CTLREGS_OFF 0x300000
#define CTLREGS_SIZE 0x10600
#define CG2_MAPPED_OFFSET (PLANEMAP_SIZE + PIXELMAP_SIZE)
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#define CG2_MAPPED_SIZE (CTLREGS_OFF + CTLREGS_SIZE)
/* per-display variables */
struct cg2_softc {
struct device sc_dev; /* base device */
struct fbdevice sc_fb; /* frame buffer device */
int sc_phys; /* display RAM (phys addr) */
int sc_pmtype; /* pmap type bits */
struct cg2fb *sc_ctlreg; /* control registers */
};
/* autoconfiguration driver */
static void cg2attach __P((struct device *, struct device *, void *));
static int cg2match __P((struct device *, void *, void *));
struct cfdriver cgtwocd = {
NULL, "cgtwo", cg2match, cg2attach,
DV_DULL, sizeof(struct cg2_softc) };
/* frame buffer generic driver */
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int cg2open(), cg2close(), cg2mmap();
static int cg2gattr __P((struct fbdevice *, struct fbgattr *));
static int cg2gvideo __P((struct fbdevice *, int *));
static int cg2svideo __P((struct fbdevice *, int *));
static int cg2getcmap __P((struct fbdevice *, struct fbcmap *));
static int cg2putcmap __P((struct fbdevice *, struct fbcmap *));
static struct fbdriver cg2fbdriver = {
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cg2open, cg2close, cg2mmap, cg2gattr,
cg2gvideo, cg2svideo,
cg2getcmap, cg2putcmap };
static void cg2loadcmap __P((struct cg2_softc *, int, int));
static int cg2intr __P((void*));
/*
* Match a cg2.
*/
static int
cg2match(parent, vcf, args)
struct device *parent;
void *vcf, *args;
{
struct confargs *ca = args;
int x;
if (ca->ca_paddr == -1)
return (0);
if (ca->ca_bustype != BUS_VME16)
return (0);
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x = bus_peek(ca->ca_bustype, ca->ca_paddr + CTLREGS_OFF, 1);
if (x == -1)
return (0);
/* XXX */
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/* printf("cg2: id=0x%x\n", x); */
return (1);
}
/*
* Attach a display. We need to notice if it is the console, too.
*/
static void
cg2attach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct cg2_softc *sc = (struct cg2_softc *)self;
struct fbdevice *fb = &sc->sc_fb;
struct confargs *ca = args;
struct fbtype *fbt;
int i, ramsize, pa;
sc->sc_phys = ca->ca_paddr;
sc->sc_pmtype = PMAP_NC | PMAP_VME16;
sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype,
ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE);
isr_add_vectored(cg2intr, (void*)sc,
ca->ca_intpri, ca->ca_intvec);
/*
* XXX - Initialize? Determine type?
*/
sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec;
sc->sc_ctlreg->status.word = 1;
fb->fb_driver = &cg2fbdriver;
fb->fb_private = sc;
fb->fb_name = sc->sc_dev.dv_xname;
fbt = &fb->fb_fbtype;
fbt->fb_type = FBTYPE_SUN2COLOR;
fbt->fb_depth = 8;
fbt->fb_cmsize = CMSIZE;
fbt->fb_width = 1152;
fbt->fb_height = 900;
fbt->fb_size = CG2_MAPPED_SIZE;
printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height);
fb_attach(fb, 2);
}
int
cg2open(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
int unit = minor(dev);
if (unit >= cgtwocd.cd_ndevs || cgtwocd.cd_devs[unit] == NULL)
return (ENXIO);
return (0);
}
int
cg2close(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
return (0);
}
int
cg2ioctl(dev, cmd, data, flags, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
struct cg2_softc *sc = cgtwocd.cd_devs[minor(dev)];
return (fbioctlfb(&sc->sc_fb, cmd, data));
}
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*/
int
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cg2mmap(dev, off, prot)
dev_t dev;
int off, prot;
{
struct cg2_softc *sc = cgtwocd.cd_devs[minor(dev)];
int realoff;
if (off & PGOFSET)
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panic("cg2mmap");
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if ((unsigned)off >= CG2_MAPPED_SIZE)
return (-1);
/*
* I turned on PMAP_NC here to disable the cache as I was
* getting horribly broken behaviour with it on.
*/
return ((sc->sc_phys + off) | sc->sc_pmtype);
}
/*
* Internal ioctl functions.
*/
/* FBIOGATTR: */
static int cg2gattr(fb, fba)
struct fbdevice *fb;
struct fbgattr *fba;
{
fba->real_type = fb->fb_fbtype.fb_type;
fba->owner = 0; /* XXX - TIOCCONS stuff? */
fba->fbtype = fb->fb_fbtype;
fba->sattr.flags = 0;
fba->sattr.emu_type = fb->fb_fbtype.fb_type;
fba->sattr.dev_specific[0] = -1;
fba->emu_types[0] = fb->fb_fbtype.fb_type;
fba->emu_types[1] = -1;
return (0);
}
/* FBIOGVIDEO: */
static int cg2gvideo(fb, on)
struct fbdevice *fb;
int *on;
{
struct cg2_softc *sc = fb->fb_private;
*on = sc->sc_ctlreg->status.reg.video_enab;
return (0);
}
/* FBIOSVIDEO: */
static int cg2svideo(fb, on)
struct fbdevice *fb;
int *on;
{
struct cg2_softc *sc = fb->fb_private;
sc->sc_ctlreg->status.reg.video_enab = (*on) & 1;
return (0);
}
/* FBIOGETCMAP: */
static int cg2getcmap(fb, cmap)
struct fbdevice *fb;
struct fbcmap *cmap;
{
struct cg2_softc *sc = fb->fb_private;
u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE];
int error, start, count, ecount;
register u_int i;
register u_short *p;
start = cmap->index;
count = cmap->count;
ecount = start + count;
if (start >= CMSIZE || ecount > CMSIZE)
return (EINVAL);
/* XXX - Wait for retrace? */
/* Copy hardware to local arrays. */
p = &sc->sc_ctlreg->redmap[start];
for (i = start; i < ecount; i++)
red[i] = *p++;
p = &sc->sc_ctlreg->greenmap[start];
for (i = start; i < ecount; i++)
green[i] = *p++;
p = &sc->sc_ctlreg->bluemap[start];
for (i = start; i < ecount; i++)
blue[i] = *p++;
/* Copy local arrays to user space. */
if ((error = copyout(red + start, cmap->red, count)) != 0)
return (error);
if ((error = copyout(green + start, cmap->green, count)) != 0)
return (error);
if ((error = copyout(blue + start, cmap->blue, count)) != 0)
return (error);
return (0);
}
/* FBIOPUTCMAP: */
static int cg2putcmap(fb, cmap)
struct fbdevice *fb;
struct fbcmap *cmap;
{
struct cg2_softc *sc = fb->fb_private;
u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE];
int error, start, count, ecount;
register u_int i;
register u_short *p;
start = cmap->index;
count = cmap->count;
ecount = start + count;
if (start >= CMSIZE || ecount > CMSIZE)
return (EINVAL);
/* Copy from user space to local arrays. */
if ((error = copyin(cmap->red, red + start, count)) != 0)
return (error);
if ((error = copyin(cmap->green, green + start, count)) != 0)
return (error);
if ((error = copyin(cmap->blue, blue + start, count)) != 0)
return (error);
/* XXX - Wait for retrace? */
/* Copy from local arrays to hardware. */
p = &sc->sc_ctlreg->redmap[start];
for (i = start; i < ecount; i++)
*p++ = red[i];
p = &sc->sc_ctlreg->greenmap[start];
for (i = start; i < ecount; i++)
*p++ = green[i];
p = &sc->sc_ctlreg->bluemap[start];
for (i = start; i < ecount; i++)
*p++ = blue[i];
return (0);
}
static int
cg2intr(vsc)
void *vsc;
{
struct cg2_softc *sc = vsc;
/* XXX - Just disable interrupts for now. */
sc->sc_ctlreg->status.reg.inten = 0;
printf("cg2intr\n");
return (1);
}