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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef ASM_ARM_DMA_DIRECT_H
   3 #define ASM_ARM_DMA_DIRECT_H 1
   4
   5 static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
   6 {
   7         unsigned int offset = paddr & ~PAGE_MASK;
   8         return pfn_to_dma(dev, __phys_to_pfn(paddr)) + offset;
   9 }
  10
  11 static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dev_addr)
  12 {
  13         unsigned int offset = dev_addr & ~PAGE_MASK;
  14         return __pfn_to_phys(dma_to_pfn(dev, dev_addr)) + offset;
  15 }
  16
  17 #endif /* ASM_ARM_DMA_DIRECT_H */