linux_dsm_epyc7002/arch/mips/include/asm/dma-direct.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _MIPS_DMA_DIRECT_H
#define _MIPS_DMA_DIRECT_H 1

static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
	if (!dev->dma_mask)
		return false;

	return addr + size - 1 <= *dev->dma_mask;
}

dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr);
phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr);

#endif /* _MIPS_DMA_DIRECT_H */
MIPS: consolidate the swiotlb implementations Octeon and Loongson share exactly the same code, move it into a common implementation, and use that implementation directly from get_arch_dma_ops. Also provide the expected dma-direct.h helpers directly instead of delegating to platform dma-coherence.h headers. Signed-off-by: Christoph Hellwig <hch@lst.de> Patchwork: https://patchwork.linux-mips.org/patch/19534/ Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: David Daney <david.daney@cavium.com> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Tom Bogendoerfer <tsbogend@alpha.franken.de> Cc: Huacai Chen <chenhc@lemote.com> Cc: iommu@lists.linux-foundation.org Cc: linux-mips@linux-mips.org 2018-06-15 18:08:36 +07:00			`/* SPDX-License-Identifier: GPL-2.0 */`
			`#ifndef _MIPS_DMA_DIRECT_H`
			`#define _MIPS_DMA_DIRECT_H 1`

			`static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)`
			`{`
			`if (!dev->dma_mask)`
			`return false;`

			`return addr + size - 1 <= *dev->dma_mask;`
			`}`

			`dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr);`
			`phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr);`

			`#endif /* _MIPS_DMA_DIRECT_H */`