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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 | ||
20 | static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) | |
21 | { | |
22 | return paddr + get_dma_offset(dev); | |
23 | } | |
24 | ||
25 | static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) | |
26 | { | |
27 | return daddr - get_dma_offset(dev); | |
28 | } | |
29 | #endif /* ASM_POWERPC_DMA_DIRECT_H */ |