diff options
author | alc <alc@FreeBSD.org> | 2009-06-26 04:47:43 +0000 |
---|---|---|
committer | alc <alc@FreeBSD.org> | 2009-06-26 04:47:43 +0000 |
commit | 91cafd48b17a27bda3cfbc38e8460a14c273ba9a (patch) | |
tree | be473333ccc371c232599396e7b5253cdbad245b /sys/arm | |
parent | 9a472dd5889ffcc7520ed12bf9cbc791eb34eab7 (diff) | |
download | FreeBSD-src-91cafd48b17a27bda3cfbc38e8460a14c273ba9a.zip FreeBSD-src-91cafd48b17a27bda3cfbc38e8460a14c273ba9a.tar.gz |
This change is the next step in implementing the cache control functionality
required by video card drivers. Specifically, this change introduces
vm_cache_mode_t with an appropriate VM_CACHE_DEFAULT definition on all
architectures. In addition, this changes adds a vm_cache_mode_t parameter
to kmem_alloc_contig() and vm_phys_alloc_contig(). These will be the
interfaces for allocating mapped kernel memory and physical memory,
respectively, with non-default cache modes.
In collaboration with: jhb
Diffstat (limited to 'sys/arm')
-rw-r--r-- | sys/arm/include/vm.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sys/arm/include/vm.h b/sys/arm/include/vm.h new file mode 100644 index 0000000..ef3ef1a --- /dev/null +++ b/sys/arm/include/vm.h @@ -0,0 +1,35 @@ +/*- + * Copyright (c) 2009 Alan L. Cox <alc@cs.rice.edu> + * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. + * + * $FreeBSD$ + */ + +#ifndef _MACHINE_VM_H_ +#define _MACHINE_VM_H_ + +/* Cache control is not (yet) implemented. */ +#define VM_CACHE_DEFAULT 0 + +#endif /* !_MACHINE_PMAP_H_ */ |