arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2006  Ralf Baechle <ralf@linux-mips.org>
   7  *
   8  *
   9  * Similar to mach-generic/dma-coherence.h except
  10  * plat_device_is_coherent hard coded to return 1.
  11  *
  12  */
  13 #ifndef __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H
  14 #define __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H
  15
  16 #include <linux/bug.h>
  17
  18 struct device;
  19
  20 extern void octeon_pci_dma_init(void);
  21
  22 static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
  23         size_t size)
  24 {
  25         BUG();
  26         return 0;
  27 }
  28
  29 static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
  30         struct page *page)
  31 {
  32         BUG();
  33         return 0;
  34 }
  35
  36 static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
  37         dma_addr_t dma_addr)
  38 {
  39         BUG();
  40         return 0;
  41 }
  42
  43 static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,
  44         size_t size, enum dma_data_direction direction)
  45 {
  46         BUG();
  47 }
  48
  49 static inline int plat_dma_supported(struct device *dev, u64 mask)
  50 {
  51         BUG();
  52         return 0;
  53 }
  54
  55 static inline int plat_device_is_coherent(struct device *dev)
  56 {
  57         return 1;
  58 }
  59
  60 static inline void plat_post_dma_flush(struct device *dev)
  61 {
  62 }
  63
  64 dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
  65 phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr);
  66
  67 struct dma_map_ops;
  68 extern struct dma_map_ops *octeon_pci_dma_map_ops;
  69 extern char *octeon_swiotlb;
  70
  71 #endif /* __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H */