arch/c6x/include/asm/dma-mapping.h

   1 /*
   2  *  Port on Texas Instruments TMS320C6x architecture
   3  *
   4  *  Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
   5  *  Author: Aurelien Jacquiot <aurelien.jacquiot@ti.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  */
  12 #ifndef _ASM_C6X_DMA_MAPPING_H
  13 #define _ASM_C6X_DMA_MAPPING_H
  14
  15 /*
  16  * DMA errors are defined by all-bits-set in the DMA address.
  17  */
  18 #define DMA_ERROR_CODE ~0
  19
  20 extern const struct dma_map_ops c6x_dma_ops;
  21
  22 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
  23 {
  24         return &c6x_dma_ops;
  25 }
  26
  27 extern void coherent_mem_init(u32 start, u32 size);
  28 void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
  29                 gfp_t gfp, unsigned long attrs);
  30 void c6x_dma_free(struct device *dev, size_t size, void *vaddr,
  31                 dma_addr_t dma_handle, unsigned long attrs);
  32
  33 #endif  /* _ASM_C6X_DMA_MAPPING_H */