root/arch/mips/loongson64/lemote-2f/dma.c

DEFINITIONS

1. __phys_to_dma
2. __dma_to_phys

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/dma-direct.h>
   3 
   4 dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
   5 {
   6         return paddr | 0x80000000;
   7 }
   8 
   9 phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr)
  10 {
  11         if (dma_addr > 0x8fffffff)
  12                 return dma_addr;
  13         return dma_addr & 0x0fffffff;
  14 }