FreeBSD/Linux Kernel Cross Reference
sys/compat/linuxkpi/common/include/linux/dma-attrs.h

     /*-
      * Copyright (c) 2010 Isilon Systems, Inc.
      * Copyright (c) 2010 iX Systems, Inc.
      * Copyright (c) 2010 Panasas, Inc.
      * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
      * 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 unmodified, 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 ``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 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 _LINUXKPI_LINUX_DMA_ATTR_H_
    #define _LINUXKPI_LINUX_DMA_ATTR_H_
    
    #define DMA_ATTR_WRITE_BARRIER          (1 << 0)
    #define DMA_ATTR_WEAK_ORDERING          (1 << 1)
    #define DMA_ATTR_WRITE_COMBINE          (1 << 2)
    #define DMA_ATTR_NON_CONSISTENT         (1 << 3)
    #define DMA_ATTR_NO_KERNEL_MAPPING      (1 << 4)
    #define DMA_ATTR_SKIP_CPU_SYNC          (1 << 5)
    #define DMA_ATTR_FORCE_CONTIGUOUS       (1 << 6)
    #define DMA_ATTR_ALLOC_SINGLE_PAGES     (1 << 7)
    #define DMA_ATTR_NO_WARN                (1 << 8)
    #define DMA_ATTR_PRIVILEGED             (1 << 9)
    
    struct dma_attrs {
            unsigned long flags;
    };
    #define DEFINE_DMA_ATTRS(x) struct dma_attrs x = { }
    
    static inline void
    init_dma_attrs(struct dma_attrs *attrs)
    {
            attrs->flags = 0;
    }
    
    #endif  /* _LINUXKPI_LINUX_DMA_ATTR_H_ */

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