1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 #ifndef _LINUX_DMA_ATTR_H_ 32 #define _LINUX_DMA_ATTR_H_ 33 34 #define DMA_ATTR_WRITE_BARRIER (1 << 0) 35 #define DMA_ATTR_WEAK_ORDERING (1 << 1) 36 #define DMA_ATTR_WRITE_COMBINE (1 << 2) 37 #define DMA_ATTR_NON_CONSISTENT (1 << 3) 38 #define DMA_ATTR_NO_KERNEL_MAPPING (1 << 4) 39 #define DMA_ATTR_SKIP_CPU_SYNC (1 << 5) 40 #define DMA_ATTR_FORCE_CONTIGUOUS (1 << 6) 41 #define DMA_ATTR_ALLOC_SINGLE_PAGES (1 << 7) 42 #define DMA_ATTR_NO_WARN (1 << 8) 43 #define DMA_ATTR_PRIVILEGED (1 << 9) 44 45 struct dma_attrs { 46 unsigned long flags; 47 }; 48 #define DEFINE_DMA_ATTRS(x) struct dma_attrs x = { } 49 50 static inline void 51 init_dma_attrs(struct dma_attrs *attrs) 52 { 53 attrs->flags = 0; 54 } 55 56 #endif /* _LINUX_DMA_ATTR_H_ */ 57