[linux-2.6-block.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)
{
	if (!dev->dma_mask)
		return false;

	return addr + size - 1 <=
		min_not_zero(*dev->dma_mask, dev->bus_dma_mask);
}

static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
{
	if (!dev)
		return paddr + PCI_DRAM_OFFSET;
	return paddr + dev->archdata.dma_offset;
}

static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr)
{
	if (!dev)
		return daddr - PCI_DRAM_OFFSET;
	return daddr - dev->archdata.dma_offset;
}
#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	{
ea8c64ac CH	7	if (!dev->dma_mask)
	8	return false;
	9
9b18114c CH	10	return addr + size - 1 <=
9b18114c CH	11	min_not_zero(*dev->dma_mask, dev->bus_dma_mask);
ea8c64ac CH	12	}
ea8c64ac CH	13
b6e05477	14	static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
ea8c64ac	15	{
7610fdf5 CH	16	if (!dev)
	17	return paddr + PCI_DRAM_OFFSET;
	18	return paddr + dev->archdata.dma_offset;
ea8c64ac CH	19	}
ea8c64ac CH	20
b6e05477	21	static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr)
ea8c64ac	22	{
7610fdf5 CH	23	if (!dev)
	24	return daddr - PCI_DRAM_OFFSET;
	25	return daddr - dev->archdata.dma_offset;
ea8c64ac CH	26	}
ea8c64ac CH	27	#endif /* ASM_POWERPC_DMA_DIRECT_H */