/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2008 Advanced Micro Devices, Inc. * * Author: Joerg Roedel <joerg.roedel@amd.com> */ #ifndef __DMA_DEBUG_H #define __DMA_DEBUG_H #include <linux/types.h> struct device; struct scatterlist; struct bus_type; #ifdef CONFIG_DMA_API_DEBUG extern void dma_debug_add_bus(struct bus_type *bus); extern void debug_dma_map_single(struct device *dev, const void *addr, unsigned long len); extern void debug_dma_map_page(struct device *dev, struct page *page, size_t offset, size_t size, int direction, dma_addr_t dma_addr); extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr); extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr, size_t size, int direction); extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, int mapped_ents, int direction); extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, int nelems, int dir); extern void debug_dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t dma_addr, void *virt); extern void debug_dma_free_coherent(struct device *dev, size_t size, void *virt, dma_addr_t addr); extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr, size_t size, int direction, dma_addr_t dma_addr); extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr, size_t size, int direction); extern void debug_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, int direction); extern void debug_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, int direction); extern void debug_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, int direction); extern void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, int direction); extern void debug_dma_dump_mappings(struct device *dev); extern void debug_dma_assert_idle(struct page *page); #else /* CONFIG_DMA_API_DEBUG */ static inline void dma_debug_add_bus(struct bus_type *bus) { } static inline void debug_dma_map_single(struct device *dev, const void *addr, unsigned long len) { } static inline void debug_dma_map_page(struct device *dev, struct page *page, size_t offset, size_t size, int direction, dma_addr_t dma_addr) { } static inline void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { } static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr, size_t size, int direction) { } static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, int mapped_ents, int direction) { } static inline void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, int nelems, int dir) { } static inline void debug_dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t dma_addr, void *virt) { } static inline void debug_dma_free_coherent(struct device *dev, size_t size, void *virt, dma_addr_t addr) { } static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr, size_t size, int direction, dma_addr_t dma_addr) { } static inline void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr, size_t size, int direction) { } static inline void debug_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, int direction) { } static inline void debug_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, int direction) { } static inline void debug_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, int direction) { } static inline void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, int direction) { } static inline void debug_dma_dump_mappings(struct device *dev) { } static inline void debug_dma_assert_idle(struct page *page) { } #endif /* CONFIG_DMA_API_DEBUG */ #endif /* __DMA_DEBUG_H */