1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright (C) 2013--2025 Intel Corporation */ 3 4 #ifndef IPU7_DMA_H 5 #define IPU7_DMA_H 6 7 #include <linux/dma-map-ops.h> 8 #include <linux/dma-mapping.h> 9 #include <linux/iova.h> 10 #include <linux/scatterlist.h> 11 #include <linux/types.h> 12 13 #include "ipu7-bus.h" 14 15 #define DMA_ATTR_RESERVE_REGION BIT(31) 16 struct ipu7_mmu_info; 17 18 struct ipu7_dma_mapping { 19 struct ipu7_mmu_info *mmu_info; 20 struct iova_domain iovad; 21 }; 22 23 void ipu7_dma_sync_single(struct ipu7_bus_device *sys, dma_addr_t dma_handle, 24 size_t size); 25 void ipu7_dma_sync_sg(struct ipu7_bus_device *sys, struct scatterlist *sglist, 26 unsigned int nents); 27 void ipu7_dma_sync_sgtable(struct ipu7_bus_device *sys, struct sg_table *sgt); 28 void *ipu7_dma_alloc(struct ipu7_bus_device *sys, size_t size, 29 dma_addr_t *dma_handle, gfp_t gfp, 30 unsigned long attrs); 31 void ipu7_dma_free(struct ipu7_bus_device *sys, size_t size, void *vaddr, 32 dma_addr_t dma_handle, unsigned long attrs); 33 int ipu7_dma_mmap(struct ipu7_bus_device *sys, struct vm_area_struct *vma, 34 void *addr, dma_addr_t iova, size_t size, 35 unsigned long attrs); 36 int ipu7_dma_map_sg(struct ipu7_bus_device *sys, struct scatterlist *sglist, 37 int nents, enum dma_data_direction dir, 38 unsigned long attrs); 39 void ipu7_dma_unmap_sg(struct ipu7_bus_device *sys, struct scatterlist *sglist, 40 int nents, enum dma_data_direction dir, 41 unsigned long attrs); 42 int ipu7_dma_map_sgtable(struct ipu7_bus_device *sys, struct sg_table *sgt, 43 enum dma_data_direction dir, unsigned long attrs); 44 void ipu7_dma_unmap_sgtable(struct ipu7_bus_device *sys, struct sg_table *sgt, 45 enum dma_data_direction dir, unsigned long attrs); 46 #endif /* IPU7_DMA_H */ 47