1 /*- 2 * Copyright (c) 2009 Alan L. Cox <alc@cs.rice.edu> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _MACHINE_VM_H_ 30 #define _MACHINE_VM_H_ 31 32 #if __ARM_ARCH >= 6 33 #define VM_MEMATTR_WB_WA ((vm_memattr_t)0) 34 #define VM_MEMATTR_NOCACHE ((vm_memattr_t)1) 35 #define VM_MEMATTR_DEVICE ((vm_memattr_t)2) 36 #define VM_MEMATTR_SO ((vm_memattr_t)3) 37 #define VM_MEMATTR_WRITE_THROUGH ((vm_memattr_t)4) 38 39 #define VM_MEMATTR_DEFAULT VM_MEMATTR_WB_WA 40 #define VM_MEMATTR_UNCACHEABLE VM_MEMATTR_SO /* misused by DMA */ 41 #ifdef _KERNEL 42 /* Don't export aliased VM_MEMATTR to userland */ 43 #define VM_MEMATTR_WRITE_COMBINING VM_MEMATTR_WRITE_THROUGH /* for DRM */ 44 #define VM_MEMATTR_WRITE_BACK VM_MEMATTR_WB_WA /* for DRM */ 45 #endif 46 #else 47 /* Memory attribute configuration. */ 48 #define VM_MEMATTR_DEFAULT 0 49 #define VM_MEMATTR_UNCACHEABLE 1 50 #endif 51 52 #endif /* !_MACHINE_VM_H_ */ 53