OpenCloudOS-Kernel/arch/mips/loongson64/lemote-2f/dma.c

15 lines
313 B
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/dma-direct.h>
dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
{
return paddr | 0x80000000;
}
phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr)
{
if (dma_addr > 0x8fffffff)
return dma_addr;
return dma_addr & 0x0fffffff;
}