| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_IA64_DMA_MAPPING_H |
| #define _ASM_IA64_DMA_MAPPING_H |
| |
| /* |
| * Copyright (C) 2003-2004 Hewlett-Packard Co |
| * David Mosberger-Tang <davidm@hpl.hp.com> |
| */ |
| #include <asm/machvec.h> |
| #include <linux/scatterlist.h> |
| #include <asm/swiotlb.h> |
| #include <linux/dma-debug.h> |
| |
| #define ARCH_HAS_DMA_GET_REQUIRED_MASK |
| |
| extern const struct dma_map_ops *dma_ops; |
| extern struct ia64_machine_vector ia64_mv; |
| extern void set_iommu_machvec(void); |
| |
| extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t, |
| enum dma_data_direction); |
| extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int, |
| enum dma_data_direction); |
| |
| static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) |
| { |
| return platform_dma_get_ops(NULL); |
| } |
| |
| 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 paddr; |
| } |
| |
| static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) |
| { |
| return daddr; |
| } |
| |
| #endif /* _ASM_IA64_DMA_MAPPING_H */ |
