| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef ASM_X86_DMA_DIRECT_H |
| #define ASM_X86_DMA_DIRECT_H 1 |
| |
| #include <linux/mem_encrypt.h> |
| |
| #ifdef CONFIG_X86_DMA_REMAP /* Platform code defines bridge-specific code */ |
| bool dma_capable(struct device *dev, dma_addr_t addr, size_t size); |
| dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr); |
| phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr); |
| #else |
| static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) |
| { |
| if (!dev->dma_mask) |
| return 0; |
| |
| return addr + size - 1 <= *dev->dma_mask; |
| } |
| |
| static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) |
| { |
| return __sme_set(paddr); |
| } |
| |
| static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) |
| { |
| return __sme_clr(daddr); |
| } |
| #endif /* CONFIG_X86_DMA_REMAP */ |
| #endif /* ASM_X86_DMA_DIRECT_H */ |
