tegrakernel/kernel/kernel-4.9/arch/arm/include/asm/dma-contiguous.h

#ifndef ASMARM_DMA_CONTIGUOUS_H
#define ASMARM_DMA_CONTIGUOUS_H

#ifdef __KERNEL__
#ifdef CONFIG_DMA_CMA

#include <linux/types.h>

void dma_contiguous_early_fixup(phys_addr_t base, unsigned long size);

#endif
#endif

#endif