| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | { |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 7 | if (!dev->dma_mask) |
| 8 | return false; |
| 9 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 10 | return addr + size - 1 <= |
| 11 | min_not_zero(*dev->dma_mask, dev->bus_dma_mask); |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 12 | } |
| 13 | |
| 14 | static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) |
| 15 | { |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 16 | if (!dev) |
| 17 | return paddr + PCI_DRAM_OFFSET; |
| 18 | return paddr + dev->archdata.dma_offset; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 19 | } |
| 20 | |
| 21 | static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr) |
| 22 | { |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 23 | if (!dev) |
| 24 | return daddr - PCI_DRAM_OFFSET; |
| 25 | return daddr - dev->archdata.dma_offset; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 26 | } |
| 27 | #endif /* ASM_POWERPC_DMA_DIRECT_H */ |