diff options
Diffstat (limited to 'sys/arm/include/vm.h')
| -rw-r--r-- | sys/arm/include/vm.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sys/arm/include/vm.h b/sys/arm/include/vm.h new file mode 100644 index 000000000000..697b48689bd8 --- /dev/null +++ b/sys/arm/include/vm.h @@ -0,0 +1,46 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * 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. + */ + +#ifndef _MACHINE_VM_H_ +#define _MACHINE_VM_H_ + +#define VM_MEMATTR_WB_WA ((vm_memattr_t)0) +#define VM_MEMATTR_NOCACHE ((vm_memattr_t)1) +#define VM_MEMATTR_DEVICE ((vm_memattr_t)2) +#define VM_MEMATTR_SO ((vm_memattr_t)3) +#define VM_MEMATTR_WRITE_THROUGH ((vm_memattr_t)4) + +#define VM_MEMATTR_DEFAULT VM_MEMATTR_WB_WA +#define VM_MEMATTR_UNCACHEABLE VM_MEMATTR_NOCACHE /* used by BUSDMA */ +#ifdef _KERNEL +/* Don't export aliased VM_MEMATTR to userland */ +#define VM_MEMATTR_WRITE_COMBINING VM_MEMATTR_WRITE_THROUGH /* for DRM */ +#define VM_MEMATTR_WRITE_BACK VM_MEMATTR_WB_WA /* for DRM */ +#endif + +#endif /* !_MACHINE_VM_H_ */ |