[mirror_ubuntu-focal-kernel.git] / arch / powerpc / include / asm / dma-direct.h

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

static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
#ifdef CONFIG_SWIOTLB
	struct dev_archdata *sd = &dev->archdata;

	if (sd->max_direct_dma_addr && addr + size > sd->max_direct_dma_addr)
		return false;
#endif

	if (!dev->dma_mask)
		return false;

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

static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
{
	return paddr + get_dma_offset(dev);
}

static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr)
{
	return daddr - get_dma_offset(dev);
}
#endif /* ASM_POWERPC_DMA_DIRECT_H */
Commit	Line	Data
ea8c64ac CH	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	#ifndef ASM_POWERPC_DMA_DIRECT_H
	3	#define ASM_POWERPC_DMA_DIRECT_H 1
	4
	5	static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
	6	{
	7	#ifdef CONFIG_SWIOTLB
	8	struct dev_archdata *sd = &dev->archdata;
	9
	10	if (sd->max_direct_dma_addr && addr + size > sd->max_direct_dma_addr)
	11	return false;
	12	#endif
	13
	14	if (!dev->dma_mask)
	15	return false;
	16
	17	return addr + size - 1 <= *dev->dma_mask;
	18	}
	19
b6e05477	20	static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
ea8c64ac CH	21	{
	22	return paddr + get_dma_offset(dev);
	23	}
	24
b6e05477	25	static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr)
ea8c64ac CH	26	{
	27	return daddr - get_dma_offset(dev);
	28	}
	29	#endif /* ASM_POWERPC_DMA_DIRECT_H */