freebsd-dev/sys/dev/cfi/cfi_bus_lbc.c

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/*-
* Copyright (c) 2007, Juniper Networks, Inc.
* 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. Neither the name of the author nor the names of any co-contributors
* may 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/sysctl.h>
#include <machine/bus.h>
#include <dev/cfi/cfi_var.h>
#include <powerpc/mpc85xx/lbc.h>
static int cfi_lbc_probe(device_t);
static device_method_t cfi_lbc_methods[] = {
/* device interface */
DEVMETHOD(device_probe, cfi_lbc_probe),
DEVMETHOD(device_attach, cfi_attach),
DEVMETHOD(device_detach, cfi_detach),
{0, 0}
};
static driver_t cfi_lbc_driver = {
cfi_driver_name,
cfi_lbc_methods,
sizeof(struct cfi_softc),
};
DRIVER_MODULE (cfi, lbc, cfi_lbc_driver, cfi_devclass, 0, 0);
static int
cfi_lbc_probe(device_t dev)
{
uintptr_t devtype;
int error;
error = BUS_READ_IVAR(device_get_parent(dev), dev, LBC_IVAR_DEVTYPE,
&devtype);
if (error)
return (error);
if (devtype != LBC_DEVTYPE_CFI)
return (EINVAL);
return (cfi_probe(dev));
}