mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
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
92 lines
2.5 KiB
C
92 lines
2.5 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/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/memrange.h>
|
|
#include <sys/rwlock.h>
|
|
#include <sys/systm.h>
|
|
|
|
static struct rwlock mr_lock;
|
|
|
|
/*
|
|
* Implementation-neutral, kernel-callable functions for manipulating
|
|
* memory range attributes.
|
|
*/
|
|
void
|
|
mem_range_init(void)
|
|
{
|
|
|
|
if (mem_range_softc.mr_op == NULL)
|
|
return;
|
|
rw_init(&mr_lock, "memrange");
|
|
mem_range_softc.mr_op->init(&mem_range_softc);
|
|
}
|
|
|
|
void
|
|
mem_range_destroy(void)
|
|
{
|
|
|
|
if (mem_range_softc.mr_op == NULL)
|
|
return;
|
|
rw_destroy(&mr_lock);
|
|
}
|
|
|
|
int
|
|
mem_range_attr_get(struct mem_range_desc *mrd, int *arg)
|
|
{
|
|
int nd;
|
|
|
|
if (mem_range_softc.mr_op == NULL)
|
|
return (EOPNOTSUPP);
|
|
nd = *arg;
|
|
rw_rlock(&mr_lock);
|
|
if (nd == 0)
|
|
*arg = mem_range_softc.mr_ndesc;
|
|
else
|
|
bcopy(mem_range_softc.mr_desc, mrd, nd * sizeof(*mrd));
|
|
rw_runlock(&mr_lock);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
mem_range_attr_set(struct mem_range_desc *mrd, int *arg)
|
|
{
|
|
int ret;
|
|
|
|
if (mem_range_softc.mr_op == NULL)
|
|
return (EOPNOTSUPP);
|
|
rw_wlock(&mr_lock);
|
|
ret = mem_range_softc.mr_op->set(&mem_range_softc, mrd, arg);
|
|
rw_wunlock(&mr_lock);
|
|
return (ret);
|
|
}
|