arch/powerpc/include/asm/dma-direct.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef ASM_POWERPC_DMA_DIRECT_H
   3 #define ASM_POWERPC_DMA_DIRECT_H 1
   4
   5 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
   6 {
   7 #ifdef CONFIG_SWIOTLB
   8         struct dev_archdata *sd = &dev->archdata;
   9
  10         if (sd->max_direct_dma_addr && addr + size > sd->max_direct_dma_addr)
  11                 return false;
  12 #endif
  13
  14         if (!dev->dma_mask)
  15                 return false;
  16
  17         return addr + size - 1 <= *dev->dma_mask;
  18 }
  19
  20 static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
  21 {
  22         return paddr + get_dma_offset(dev);
  23 }
  24
  25 static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
  26 {
  27         return daddr - get_dma_offset(dev);
  28 }
  29 #endif /* ASM_POWERPC_DMA_DIRECT_H */