2fea643112
Compile sys/dev/mem/memutil.c for all supported platforms and remove now unnecessary dev_mem_md_init(). Consistently define mem_range_softc from mem.c for all platforms. Add missing #include guards for machine/memdev.h and sys/memrange.h. Clean up some nearby style(9) nits. MFC after: 1 month
110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/*-
|
|
* Copyright (c) 2004 Mark R V Murray
|
|
* 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
|
|
* in this position and unchanged.
|
|
* 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 AUTHORS ``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/conf.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/memrange.h>
|
|
#include <sys/module.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <machine/memdev.h>
|
|
|
|
static struct cdev *memdev, *kmemdev;
|
|
|
|
static struct cdevsw mem_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_flags = D_MEM|D_NEEDGIANT,
|
|
.d_open = memopen,
|
|
.d_read = memrw,
|
|
.d_write = memrw,
|
|
.d_ioctl = memioctl,
|
|
.d_mmap = memmmap,
|
|
.d_name = "mem",
|
|
};
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
memopen(struct cdev *dev __unused, int flags, int fmt __unused,
|
|
struct thread *td)
|
|
{
|
|
int error = 0;
|
|
|
|
if (flags & FWRITE)
|
|
error = securelevel_gt(td->td_ucred, 0);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
mem_modevent(module_t mod __unused, int type, void *data __unused)
|
|
{
|
|
switch(type) {
|
|
case MOD_LOAD:
|
|
if (bootverbose)
|
|
printf("mem: <memory>\n");
|
|
mem_range_init();
|
|
memdev = make_dev(&mem_cdevsw, CDEV_MINOR_MEM,
|
|
UID_ROOT, GID_KMEM, 0640, "mem");
|
|
kmemdev = make_dev(&mem_cdevsw, CDEV_MINOR_KMEM,
|
|
UID_ROOT, GID_KMEM, 0640, "kmem");
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
mem_range_destroy();
|
|
destroy_dev(memdev);
|
|
destroy_dev(kmemdev);
|
|
break;
|
|
|
|
case MOD_SHUTDOWN:
|
|
break;
|
|
|
|
default:
|
|
return(EOPNOTSUPP);
|
|
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
DEV_MODULE(mem, mem_modevent, NULL);
|
|
MODULE_VERSION(mem, 1);
|