400 lines
8.6 KiB
C
400 lines
8.6 KiB
C
/* $NetBSD: grf_compat.c,v 1.7 2001/04/30 17:12:03 wiz Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1999 Scott Reynolds
|
|
* All rights reserved.
|
|
*
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*/
|
|
|
|
/*
|
|
* macfb compatibility with legacy grf devices
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/cdefs.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/resourcevar.h>
|
|
#include <sys/vnode.h>
|
|
|
|
#include <machine/autoconf.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/grfioctl.h>
|
|
|
|
#include <mac68k/nubus/nubus.h>
|
|
#include <mac68k/dev/grfvar.h>
|
|
#include <mac68k/dev/macfbvar.h>
|
|
|
|
#include <miscfs/specfs/specdev.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
#include <uvm/uvm_map.h>
|
|
|
|
cdev_decl(grf);
|
|
|
|
void grf_scinit __P((struct grf_softc *, const char *, int));
|
|
void grf_init __P((int));
|
|
void grfattach __P((int));
|
|
int grfmap __P((dev_t, struct macfb_softc *, caddr_t *, struct proc *));
|
|
int grfunmap __P((dev_t, struct macfb_softc *, caddr_t, struct proc *));
|
|
|
|
/* Non-private for the benefit of libkvm. */
|
|
struct grf_softc *grf_softc;
|
|
int numgrf = 0;
|
|
|
|
/*
|
|
* Initialize a softc to sane defaults.
|
|
*/
|
|
void
|
|
grf_scinit(sc, name, unit)
|
|
struct grf_softc *sc;
|
|
const char *name;
|
|
int unit;
|
|
{
|
|
memset(sc, 0, sizeof(struct grf_softc));
|
|
snprintf(sc->sc_xname, sizeof(sc->sc_xname), "%s%d", name, unit);
|
|
sc->mfb_sc = NULL;
|
|
}
|
|
|
|
/*
|
|
* (Re-)initialize the grf_softc block so that at least the requested
|
|
* number of elements has been allocated. If this results in more
|
|
* elements than we had prior to getting here, we initialize each of
|
|
* them to avoid problems down the road.
|
|
*/
|
|
void
|
|
grf_init(n)
|
|
int n;
|
|
{
|
|
struct grf_softc *sc;
|
|
int i;
|
|
|
|
if (n >= numgrf) {
|
|
i = numgrf;
|
|
numgrf = n + 1;
|
|
|
|
if (grf_softc == NULL)
|
|
sc = (struct grf_softc *)
|
|
malloc(numgrf * sizeof(*sc),
|
|
M_DEVBUF, M_NOWAIT);
|
|
else
|
|
sc = (struct grf_softc *)
|
|
realloc(grf_softc, numgrf * sizeof(*sc),
|
|
M_DEVBUF, M_NOWAIT);
|
|
if (sc == NULL) {
|
|
printf("WARNING: no memory for grf emulation\n");
|
|
if (grf_softc != NULL)
|
|
free(grf_softc, M_DEVBUF);
|
|
return;
|
|
}
|
|
grf_softc = sc;
|
|
|
|
/* Initialize per-softc structures. */
|
|
while (i < numgrf) {
|
|
grf_scinit(&grf_softc[i], "grf", i);
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called by main() during pseudo-device attachment. If we had a
|
|
* way to configure additional grf devices later, this would actually
|
|
* allocate enough space for them. As it stands, it's nonsensical,
|
|
* so other than a basic sanity check we do nothing.
|
|
*/
|
|
void
|
|
grfattach(n)
|
|
int n;
|
|
{
|
|
if (n <= 0) {
|
|
#ifdef DIAGNOSTIC
|
|
panic("grfattach: count <= 0");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
#if 0 /* XXX someday, if we implement a way to attach after autoconfig */
|
|
grf_init(n);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Called from macfb_attach() after setting up the frame buffer. Since
|
|
* there is a 1:1 correspondence between the macfb device and the grf
|
|
* device, the only bit of information we really need is the macfb_softc.
|
|
*/
|
|
void
|
|
grf_attach(sc, unit)
|
|
struct macfb_softc *sc;
|
|
int unit;
|
|
{
|
|
grf_init(unit);
|
|
|
|
if (unit < numgrf)
|
|
grf_softc[unit].mfb_sc = sc;
|
|
}
|
|
|
|
/*
|
|
* Standard device ops
|
|
*/
|
|
int
|
|
grfopen(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
struct grf_softc *sc;
|
|
int unit = GRFUNIT(dev);
|
|
int rv = 0;
|
|
|
|
if (grf_softc == NULL || unit >= numgrf)
|
|
return ENXIO;
|
|
|
|
sc = &grf_softc[unit];
|
|
if (sc->mfb_sc == NULL)
|
|
rv = ENXIO;
|
|
|
|
return rv;
|
|
}
|
|
|
|
int
|
|
grfclose(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
struct grf_softc *sc;
|
|
int unit = GRFUNIT(dev);
|
|
int rv = 0;
|
|
|
|
if (grf_softc == NULL || unit >= numgrf)
|
|
return ENXIO;
|
|
|
|
sc = &grf_softc[unit];
|
|
if (sc->mfb_sc != NULL)
|
|
macfb_clear(sc->mfb_sc->sc_dc); /* clear the display */
|
|
else
|
|
rv = ENXIO;
|
|
|
|
return rv;
|
|
}
|
|
|
|
int
|
|
grfread(dev, uio, ioflag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int ioflag;
|
|
{
|
|
return ENXIO;
|
|
}
|
|
|
|
int
|
|
grfwrite(dev, uio, ioflag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int ioflag;
|
|
{
|
|
return ENXIO;
|
|
}
|
|
|
|
int
|
|
grfioctl(dev, cmd, data, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
struct grf_softc *sc;
|
|
struct macfb_devconfig *dc;
|
|
#if defined(GRF_COMPAT) || (NGRF > 0)
|
|
struct grfinfo *gd;
|
|
#endif /* GRF_COMPAT || (NGRF > 0) */
|
|
struct grfmode *gm;
|
|
int unit = GRFUNIT(dev);
|
|
int rv;
|
|
|
|
if (grf_softc == NULL || unit >= numgrf)
|
|
return ENXIO;
|
|
|
|
sc = &grf_softc[unit];
|
|
if (sc->mfb_sc == NULL)
|
|
return ENXIO;
|
|
|
|
dc = sc->mfb_sc->sc_dc;
|
|
|
|
switch (cmd) {
|
|
#if defined(GRF_COMPAT) || (NGRF > 0)
|
|
case GRFIOCGINFO:
|
|
gd = (struct grfinfo *)data;
|
|
memset(gd, 0, sizeof(struct grfinfo));
|
|
gd->gd_fbaddr = (caddr_t)dc->dc_paddr;
|
|
gd->gd_fbsize = dc->dc_size;
|
|
gd->gd_colors = (short)(1 << dc->dc_depth);
|
|
gd->gd_planes = (short)dc->dc_depth;
|
|
gd->gd_fbwidth = dc->dc_wid;
|
|
gd->gd_fbheight = dc->dc_ht;
|
|
gd->gd_fbrowbytes = dc->dc_rowbytes;
|
|
gd->gd_dwidth = dc->dc_raster.width;
|
|
gd->gd_dheight = dc->dc_raster.height;
|
|
rv = 0;
|
|
break;
|
|
#endif /* GRF_COMPAT || (NGRF > 0) */
|
|
|
|
case GRFIOCON:
|
|
case GRFIOCOFF:
|
|
/* Nothing to do */
|
|
rv = 0;
|
|
break;
|
|
|
|
#if defined(GRF_COMPAT) || (NGRF > 0)
|
|
case GRFIOCMAP:
|
|
rv = grfmap(dev, sc->mfb_sc, (caddr_t *)data, p);
|
|
break;
|
|
|
|
case GRFIOCUNMAP:
|
|
rv = grfunmap(dev, sc->mfb_sc, *(caddr_t *)data, p);
|
|
break;
|
|
#endif /* GRF_COMPAT || (NGRF > 0) */
|
|
|
|
case GRFIOCGMODE:
|
|
gm = (struct grfmode *)data;
|
|
memset(gm, 0, sizeof(struct grfmode));
|
|
gm->fbbase = (char *)dc->dc_vaddr;
|
|
gm->fbsize = dc->dc_size;
|
|
gm->fboff = dc->dc_offset;
|
|
gm->rowbytes = dc->dc_rowbytes;
|
|
gm->width = dc->dc_wid;
|
|
gm->height = dc->dc_ht;
|
|
gm->psize = dc->dc_depth;
|
|
rv = 0;
|
|
break;
|
|
|
|
case GRFIOCLISTMODES:
|
|
case GRFIOCGETMODE:
|
|
case GRFIOCSETMODE:
|
|
/* NONE of these operations are (officially) supported. */
|
|
default:
|
|
rv = EINVAL;
|
|
break;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
int
|
|
grfpoll(dev, events, p)
|
|
dev_t dev;
|
|
int events;
|
|
struct proc *p;
|
|
{
|
|
return EINVAL;
|
|
}
|
|
|
|
paddr_t
|
|
grfmmap(dev, off, prot)
|
|
dev_t dev;
|
|
off_t off;
|
|
int prot;
|
|
{
|
|
struct grf_softc *sc;
|
|
struct macfb_devconfig *dc;
|
|
paddr_t addr;
|
|
int unit = GRFUNIT(dev);
|
|
|
|
if (grf_softc == NULL || unit >= numgrf)
|
|
return ENXIO;
|
|
|
|
sc = &grf_softc[unit];
|
|
if (sc->mfb_sc == NULL)
|
|
return ENXIO;
|
|
|
|
dc = sc->mfb_sc->sc_dc;
|
|
|
|
if (off >= 0 &&
|
|
off < m68k_round_page(dc->dc_offset + dc->dc_size))
|
|
addr = m68k_btop(dc->dc_paddr + off);
|
|
else
|
|
addr = (-1); /* XXX bogus */
|
|
|
|
return addr;
|
|
}
|
|
|
|
int
|
|
grfmap(dev, sc, addrp, p)
|
|
dev_t dev;
|
|
struct macfb_softc *sc;
|
|
caddr_t *addrp;
|
|
struct proc *p;
|
|
{
|
|
struct specinfo si;
|
|
struct vnode vn;
|
|
u_long len;
|
|
int error, flags;
|
|
|
|
*addrp = (caddr_t)sc->sc_dc->dc_paddr;
|
|
len = m68k_round_page(sc->sc_dc->dc_offset + sc->sc_dc->dc_size);
|
|
flags = MAP_SHARED | MAP_FIXED;
|
|
|
|
vn.v_type = VCHR; /* XXX */
|
|
vn.v_specinfo = &si; /* XXX */
|
|
vn.v_rdev = dev; /* XXX */
|
|
|
|
error = uvm_mmap(&p->p_vmspace->vm_map, (vaddr_t *)addrp,
|
|
(vsize_t)len, VM_PROT_ALL, VM_PROT_ALL,
|
|
flags, (caddr_t)&vn, 0, p->p_rlimit[RLIMIT_MEMLOCK].rlim_cur);
|
|
|
|
/* Offset into page: */
|
|
*addrp += sc->sc_dc->dc_offset;
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
grfunmap(dev, sc, addr, p)
|
|
dev_t dev;
|
|
struct macfb_softc *sc;
|
|
caddr_t addr;
|
|
struct proc *p;
|
|
{
|
|
vm_size_t size;
|
|
|
|
addr -= sc->sc_dc->dc_offset;
|
|
|
|
if (addr <= 0)
|
|
return (-1);
|
|
|
|
size = m68k_round_page(sc->sc_dc->dc_offset + sc->sc_dc->dc_size);
|
|
uvm_unmap(&p->p_vmspace->vm_map, (vaddr_t)addr, (vaddr_t)addr + size);
|
|
return 0;
|
|
}
|