usr/uio-dma-ioctl.h

   1 /**
   2   UIO DMA library.
   3   Copyright (C) 2009 Qualcomm Inc. All rights reserved.
   4   Written by Max Krasnyansky <maxk@qualcommm.com>
   5
   6   Redistribution and use in source and binary forms, with or without
   7   modification, are permitted provided that the following conditions are met:
   8
   9   1. Redistributions of source code must retain the above copyright
  10   notice, this list of conditions and the following disclaimer.
  11
  12   2. Redistributions in binary form must reproduce the above copyright
  13   notice, this list of conditions and the following disclaimer in the
  14   documentation and/or other materials provided with the distribution.
  15
  16   3. Neither the name of the QUALCOMM Incorporated nor the
  17   names of any contributors may be used to endorse or promote products
  18   derived from this software without specific prior written permission.
  19
  20   THIS SOFTWARE IS PROVIDED BY QUALCOMM AND ANY OTHER CONTRIBUTORS
  21   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL QUALCOMM
  24   AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED
  26   TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  27   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  28   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT(INCLUDING
  29   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  30   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31 */
  32
  33 #ifndef UIO_DMA_IOCTL_H
  34 #define UIO_DMA_IOCTL_H
  35
  36 #include <stdint.h>
  37
  38 /* ioctl defines */
  39
  40 #define UIO_DMA_ALLOC _IOW('U', 200, int)
  41 struct uio_dma_alloc_req {
  42         uint64_t dma_mask;
  43         uint16_t memnode;
  44         uint16_t cache;
  45         uint32_t flags;
  46         uint32_t chunk_size;
  47         uint32_t chunk_count;
  48         uint64_t mmap_offset;
  49 };
  50
  51 #define UIO_DMA_FREE  _IOW('U', 201, int)
  52 struct uio_dma_free_req {
  53         uint64_t mmap_offset;
  54 };
  55
  56 #define UIO_DMA_MAP   _IOW('U', 202, int)
  57 struct uio_dma_map_req {
  58         uint64_t mmap_offset;
  59         uint32_t flags;
  60         uint32_t devid;
  61         uint8_t  direction;
  62         uint32_t chunk_count;
  63         uint32_t chunk_size;
  64         uint64_t dmaddr[0];
  65 };
  66
  67 #define UIO_DMA_UNMAP _IOW('U', 203, int)
  68 struct uio_dma_unmap_req {
  69         uint64_t mmap_offset;
  70         uint32_t devid;
  71         uint32_t flags;
  72         uint8_t  direction;
  73 };
  74
  75 #endif /* UIO_DMA_IOCTL_H */