1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/dma-direct.h> 2 #include <linux/dma-direct.h>
3 3
4 dma_addr_t phys_to_dma(struct device *dev, phy 4 dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
5 { 5 {
6 return paddr | 0x80000000; 6 return paddr | 0x80000000;
7 } 7 }
8 8
9 phys_addr_t dma_to_phys(struct device *dev, dm 9 phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr)
10 { 10 {
11 if (dma_addr > 0x8fffffff) 11 if (dma_addr > 0x8fffffff)
12 return dma_addr; 12 return dma_addr;
13 return dma_addr & 0x0fffffff; 13 return dma_addr & 0x0fffffff;
14 } 14 }
15 15
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