1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef ASM_ARM_DMA_DIRECT_H
 3#define ASM_ARM_DMA_DIRECT_H 1
 4
 5static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
 6{
 7	unsigned int offset = paddr & ~PAGE_MASK;
 8	return pfn_to_dma(dev, __phys_to_pfn(paddr)) + offset;
 9}
10
11static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dev_addr)
12{
13	unsigned int offset = dev_addr & ~PAGE_MASK;
14	return __pfn_to_phys(dma_to_pfn(dev, dev_addr)) + offset;
15}
16
17static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
18{
19	u64 limit, mask;
20
21	if (!dev->dma_mask)
22		return 0;
23
24	mask = *dev->dma_mask;
25
26	limit = (mask + 1) & ~mask;
27	if (limit && size > limit)
28		return 0;
29
30	if ((addr | (addr + size - 1)) & ~mask)
31		return 0;
32
33	return 1;
34}
35
36#endif /* ASM_ARM_DMA_DIRECT_H */