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/* $OpenBSD: vmel.c,v 1.17 2010/06/26 23:24:44 guenther Exp $ */
/*
* Copyright (c) 1995 Theo de Raadt
* 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.
*
* 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.
*/
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <machine/conf.h>
#include <machine/cpu.h>
#include <mvme88k/dev/vme.h>
/*
* The VMEL driver deals with D32 transfers on the VME bus. The number
* of address bits (A16, A24, A32) is irrelevant since the mapping
* functions will decide how many address bits are relevant.
*/
void vmelattach(struct device *, struct device *, void *);
int vmelmatch(struct device *, void *, void *);
int vmelscan(struct device *, void *, void *);
struct cfattach vmel_ca = {
sizeof(struct device), vmelmatch, vmelattach
};
struct cfdriver vmel_cd = {
NULL, "vmel", DV_DULL
};
int
vmelmatch(parent, cf, args)
struct device *parent;
void *cf, *args;
{
return (1);
}
int
vmelscan(parent, child, args)
struct device *parent;
void *child, *args;
{
return (vmescan(parent, child, args, BUS_VMEL));
}
void
vmelattach(parent, self, args)
struct device *parent, *self;
void *args;
{
printf("\n");
config_search(vmelscan, self, args);
}
/*ARGSUSED*/
int
vmelopen(dev, flag, mode, p)
dev_t dev;
int flag, mode;
struct proc *p;
{
if (minor(dev) >= vmel_cd.cd_ndevs ||
vmel_cd.cd_devs[minor(dev)] == NULL)
return (ENODEV);
return (0);
}
/*ARGSUSED*/
int
vmelclose(dev, flag, mode, p)
dev_t dev;
int flag, mode;
struct proc *p;
{
return (0);
}
/*ARGSUSED*/
int
vmelioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
int error = 0;
switch (cmd) {
default:
error = ENOTTY;
break;
}
return (error);
}
int
vmelread(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
int unit = minor(dev);
struct device *sc = (struct device *)vmel_cd.cd_devs[unit];
return (vmerw(sc->dv_parent, uio, flags, BUS_VMEL));
}
int
vmelwrite(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
int unit = minor(dev);
struct device *sc = (struct device *)vmel_cd.cd_devs[unit];
return (vmerw(sc->dv_parent, uio, flags, BUS_VMEL));
}
paddr_t
vmelmmap(dev, off, prot)
dev_t dev;
off_t off;
int prot;
{
int unit = minor(dev);
struct device *sc = (struct device *)vmel_cd.cd_devs[unit];
paddr_t pa;
pa = vmepmap(sc->dv_parent, off, BUS_VMEL);
#ifdef DEBUG
printf("vmel %llx pa %p\n", off, pa);
#endif
if (pa == NULL)
return (-1);
return (atop(pa));
}
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