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 #ifndef _LINUXKPI_LINUX_DMA_ATTR_H_ 30 #define _LINUXKPI_LINUX_DMA_ATTR_H_ 31 32 #define DMA_ATTR_WRITE_BARRIER (1 << 0) 33 #define DMA_ATTR_WEAK_ORDERING (1 << 1) 34 #define DMA_ATTR_WRITE_COMBINE (1 << 2) 35 #define DMA_ATTR_NON_CONSISTENT (1 << 3) 36 #define DMA_ATTR_NO_KERNEL_MAPPING (1 << 4) 37 #define DMA_ATTR_SKIP_CPU_SYNC (1 << 5) 38 #define DMA_ATTR_FORCE_CONTIGUOUS (1 << 6) 39 #define DMA_ATTR_ALLOC_SINGLE_PAGES (1 << 7) 40 #define DMA_ATTR_NO_WARN (1 << 8) 41 #define DMA_ATTR_PRIVILEGED (1 << 9) 42 43 struct dma_attrs { 44 unsigned long flags; 45 }; 46 #define DEFINE_DMA_ATTRS(x) struct dma_attrs x = { } 47 48 static inline void 49 init_dma_attrs(struct dma_attrs *attrs) 50 { 51 attrs->flags = 0; 52 } 53 54 #endif /* _LINUXKPI_LINUX_DMA_ATTR_H_ */ 55