LXR linux/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
   5static 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
  20static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
  21{
  22        return paddr + get_dma_offset(dev);
  23}
  24
  25static 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 */
  30