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15b28bbcd5
Most mainstream architectures are using 65536 entries, so lets stick to that. If someone is really desperate to override it that can still be done through <asm/dma-mapping.h>, but I'd rather see a really good rationale for that. dma_debug_init is now called as a core_initcall, which for many architectures means much earlier, and provides dma-debug functionality earlier in the boot process. This should be safe as it only relies on the memory allocator already being available. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
208 lines
5.5 KiB
C
208 lines
5.5 KiB
C
/*
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* Copyright (C) 2008 Advanced Micro Devices, Inc.
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*
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* Author: Joerg Roedel <joerg.roedel@amd.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __DMA_DEBUG_H
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#define __DMA_DEBUG_H
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#include <linux/types.h>
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struct device;
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struct scatterlist;
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struct bus_type;
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#ifdef CONFIG_DMA_API_DEBUG
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extern void dma_debug_add_bus(struct bus_type *bus);
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extern int dma_debug_resize_entries(u32 num_entries);
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extern void debug_dma_map_page(struct device *dev, struct page *page,
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size_t offset, size_t size,
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int direction, dma_addr_t dma_addr,
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bool map_single);
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extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
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extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
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size_t size, int direction, bool map_single);
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extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
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int nents, int mapped_ents, int direction);
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extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
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int nelems, int dir);
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extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t dma_addr, void *virt);
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extern void debug_dma_free_coherent(struct device *dev, size_t size,
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void *virt, dma_addr_t addr);
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extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
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size_t size, int direction,
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dma_addr_t dma_addr);
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extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
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size_t size, int direction);
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extern void debug_dma_sync_single_for_cpu(struct device *dev,
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dma_addr_t dma_handle, size_t size,
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int direction);
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extern void debug_dma_sync_single_for_device(struct device *dev,
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dma_addr_t dma_handle,
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size_t size, int direction);
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extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
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dma_addr_t dma_handle,
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unsigned long offset,
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size_t size,
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int direction);
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extern void debug_dma_sync_single_range_for_device(struct device *dev,
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dma_addr_t dma_handle,
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unsigned long offset,
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size_t size, int direction);
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extern void debug_dma_sync_sg_for_cpu(struct device *dev,
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struct scatterlist *sg,
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int nelems, int direction);
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extern void debug_dma_sync_sg_for_device(struct device *dev,
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struct scatterlist *sg,
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int nelems, int direction);
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extern void debug_dma_dump_mappings(struct device *dev);
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extern void debug_dma_assert_idle(struct page *page);
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#else /* CONFIG_DMA_API_DEBUG */
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static inline void dma_debug_add_bus(struct bus_type *bus)
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{
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}
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static inline int dma_debug_resize_entries(u32 num_entries)
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{
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return 0;
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}
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static inline void debug_dma_map_page(struct device *dev, struct page *page,
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size_t offset, size_t size,
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int direction, dma_addr_t dma_addr,
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bool map_single)
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{
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}
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static inline void debug_dma_mapping_error(struct device *dev,
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dma_addr_t dma_addr)
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{
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}
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static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
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size_t size, int direction,
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bool map_single)
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{
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}
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static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
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int nents, int mapped_ents, int direction)
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{
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}
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static inline void debug_dma_unmap_sg(struct device *dev,
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struct scatterlist *sglist,
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int nelems, int dir)
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{
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}
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static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t dma_addr, void *virt)
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{
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}
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static inline void debug_dma_free_coherent(struct device *dev, size_t size,
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void *virt, dma_addr_t addr)
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{
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}
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static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
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size_t size, int direction,
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dma_addr_t dma_addr)
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{
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}
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static inline void debug_dma_unmap_resource(struct device *dev,
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dma_addr_t dma_addr, size_t size,
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int direction)
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{
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}
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static inline void debug_dma_sync_single_for_cpu(struct device *dev,
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dma_addr_t dma_handle,
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size_t size, int direction)
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{
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}
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static inline void debug_dma_sync_single_for_device(struct device *dev,
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dma_addr_t dma_handle,
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size_t size, int direction)
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{
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}
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static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
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dma_addr_t dma_handle,
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unsigned long offset,
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size_t size,
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int direction)
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{
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}
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static inline void debug_dma_sync_single_range_for_device(struct device *dev,
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dma_addr_t dma_handle,
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unsigned long offset,
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size_t size,
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int direction)
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{
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}
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static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
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struct scatterlist *sg,
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int nelems, int direction)
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{
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}
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static inline void debug_dma_sync_sg_for_device(struct device *dev,
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struct scatterlist *sg,
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int nelems, int direction)
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{
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}
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static inline void debug_dma_dump_mappings(struct device *dev)
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{
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}
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static inline void debug_dma_assert_idle(struct page *page)
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{
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}
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#endif /* CONFIG_DMA_API_DEBUG */
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#endif /* __DMA_DEBUG_H */
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