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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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powerpc: use dma_map_ops struct
This converts uses dma_map_ops struct (in include/linux/dma-mapping.h) instead of POWERPC homegrown dma_mapping_ops. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
parent
f726f30e32
commit
45223c5492
12 changed files with 37 additions and 79 deletions
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@ -6,7 +6,7 @@
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#ifndef _ASM_POWERPC_DEVICE_H
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#define _ASM_POWERPC_DEVICE_H
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struct dma_mapping_ops;
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struct dma_map_ops;
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struct device_node;
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struct dev_archdata {
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@ -14,7 +14,7 @@ struct dev_archdata {
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struct device_node *of_node;
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/* DMA operations on that device */
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struct dma_mapping_ops *dma_ops;
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struct dma_map_ops *dma_ops;
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void *dma_data;
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#ifdef CONFIG_SWIOTLB
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dma_addr_t max_direct_dma_addr;
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@ -63,57 +63,15 @@ static inline unsigned long device_to_mask(struct device *dev)
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return 0xfffffffful;
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}
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/*
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* DMA operations are abstracted for G5 vs. i/pSeries, PCI vs. VIO
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*/
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struct dma_mapping_ops {
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void * (*alloc_coherent)(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t flag);
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void (*free_coherent)(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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int (*map_sg)(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction direction,
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struct dma_attrs *attrs);
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void (*unmap_sg)(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction direction,
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struct dma_attrs *attrs);
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int (*dma_supported)(struct device *dev, u64 mask);
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int (*set_dma_mask)(struct device *dev, u64 dma_mask);
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dma_addr_t (*map_page)(struct device *dev, struct page *page,
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unsigned long offset, size_t size,
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enum dma_data_direction direction,
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struct dma_attrs *attrs);
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void (*unmap_page)(struct device *dev,
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dma_addr_t dma_address, size_t size,
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enum dma_data_direction direction,
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struct dma_attrs *attrs);
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#ifdef CONFIG_PPC_NEED_DMA_SYNC_OPS
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void (*sync_single_range_for_cpu)(struct device *hwdev,
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dma_addr_t dma_handle, unsigned long offset,
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size_t size,
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enum dma_data_direction direction);
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void (*sync_single_range_for_device)(struct device *hwdev,
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dma_addr_t dma_handle, unsigned long offset,
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size_t size,
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enum dma_data_direction direction);
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void (*sync_sg_for_cpu)(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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enum dma_data_direction direction);
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void (*sync_sg_for_device)(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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enum dma_data_direction direction);
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#endif
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};
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/*
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* Available generic sets of operations
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*/
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#ifdef CONFIG_PPC64
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extern struct dma_mapping_ops dma_iommu_ops;
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extern struct dma_map_ops dma_iommu_ops;
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#endif
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extern struct dma_mapping_ops dma_direct_ops;
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extern struct dma_map_ops dma_direct_ops;
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static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
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static inline struct dma_map_ops *get_dma_ops(struct device *dev)
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{
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/* We don't handle the NULL dev case for ISA for now. We could
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* do it via an out of line call but it is not needed for now. The
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@ -126,14 +84,14 @@ static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
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return dev->archdata.dma_ops;
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}
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static inline void set_dma_ops(struct device *dev, struct dma_mapping_ops *ops)
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static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
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{
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dev->archdata.dma_ops = ops;
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}
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static inline int dma_supported(struct device *dev, u64 mask)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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if (unlikely(dma_ops == NULL))
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return 0;
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@ -147,7 +105,7 @@ static inline int dma_supported(struct device *dev, u64 mask)
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static inline int dma_set_mask(struct device *dev, u64 dma_mask)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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if (unlikely(dma_ops == NULL))
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return -EIO;
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@ -161,7 +119,7 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask)
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/*
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* map_/unmap_single actually call through to map/unmap_page now that all the
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* dma_mapping_ops have been converted over. We just have to get the page and
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* dma_map_ops have been converted over. We just have to get the page and
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* offset to pass through to map_page
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*/
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static inline dma_addr_t dma_map_single_attrs(struct device *dev,
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@ -170,7 +128,7 @@ static inline dma_addr_t dma_map_single_attrs(struct device *dev,
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enum dma_data_direction direction,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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@ -185,7 +143,7 @@ static inline void dma_unmap_single_attrs(struct device *dev,
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enum dma_data_direction direction,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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@ -198,7 +156,7 @@ static inline dma_addr_t dma_map_page_attrs(struct device *dev,
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enum dma_data_direction direction,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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@ -211,7 +169,7 @@ static inline void dma_unmap_page_attrs(struct device *dev,
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enum dma_data_direction direction,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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@ -222,7 +180,7 @@ static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction direction,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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return dma_ops->map_sg(dev, sg, nents, direction, attrs);
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@ -234,7 +192,7 @@ static inline void dma_unmap_sg_attrs(struct device *dev,
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enum dma_data_direction direction,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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dma_ops->unmap_sg(dev, sg, nhwentries, direction, attrs);
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@ -243,7 +201,7 @@ static inline void dma_unmap_sg_attrs(struct device *dev,
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static inline void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t flag)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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return dma_ops->alloc_coherent(dev, size, dma_handle, flag);
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@ -252,7 +210,7 @@ static inline void *dma_alloc_coherent(struct device *dev, size_t size,
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static inline void dma_free_coherent(struct device *dev, size_t size,
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void *cpu_addr, dma_addr_t dma_handle)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
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dma_addr_t dma_handle, size_t size,
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enum dma_data_direction direction)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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@ -317,7 +275,7 @@ static inline void dma_sync_single_for_device(struct device *dev,
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dma_addr_t dma_handle, size_t size,
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enum dma_data_direction direction)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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@ -330,7 +288,7 @@ static inline void dma_sync_sg_for_cpu(struct device *dev,
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struct scatterlist *sgl, int nents,
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enum dma_data_direction direction)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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@ -342,7 +300,7 @@ static inline void dma_sync_sg_for_device(struct device *dev,
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struct scatterlist *sgl, int nents,
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enum dma_data_direction direction)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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dma_addr_t dma_handle, unsigned long offset, size_t size,
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enum dma_data_direction direction)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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dma_addr_t dma_handle, unsigned long offset, size_t size,
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enum dma_data_direction direction)
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{
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struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
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struct dma_map_ops *dma_ops = get_dma_ops(dev);
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BUG_ON(!dma_ops);
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}
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#ifdef CONFIG_PCI
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extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops);
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extern struct dma_mapping_ops *get_pci_dma_ops(void);
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extern void set_pci_dma_ops(struct dma_map_ops *dma_ops);
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extern struct dma_map_ops *get_pci_dma_ops(void);
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#else /* CONFIG_PCI */
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#define set_pci_dma_ops(d)
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#define get_pci_dma_ops() NULL
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#include <linux/swiotlb.h>
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extern struct dma_mapping_ops swiotlb_dma_ops;
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extern struct dma_map_ops swiotlb_dma_ops;
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static inline void dma_mark_clean(void *addr, size_t size) {}
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return 1;
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}
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struct dma_mapping_ops dma_iommu_ops = {
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struct dma_map_ops dma_iommu_ops = {
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.alloc_coherent = dma_iommu_alloc_coherent,
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.free_coherent = dma_iommu_free_coherent,
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.map_sg = dma_iommu_map_sg,
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* map_page, and unmap_page on highmem, use normal dma_ops
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* for everything else.
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*/
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struct dma_mapping_ops swiotlb_dma_ops = {
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struct dma_map_ops swiotlb_dma_ops = {
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.alloc_coherent = dma_direct_alloc_coherent,
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.free_coherent = dma_direct_free_coherent,
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.map_sg = swiotlb_map_sg_attrs,
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}
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#endif
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struct dma_mapping_ops dma_direct_ops = {
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struct dma_map_ops dma_direct_ops = {
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.alloc_coherent = dma_direct_alloc_coherent,
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.free_coherent = dma_direct_free_coherent,
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.map_sg = dma_direct_map_sg,
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return 1;
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}
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static struct dma_mapping_ops ibmebus_dma_ops = {
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static struct dma_map_ops ibmebus_dma_ops = {
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.alloc_coherent = ibmebus_alloc_coherent,
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.free_coherent = ibmebus_free_coherent,
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.map_sg = ibmebus_map_sg,
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unsigned int ppc_pci_flags = 0;
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static struct dma_mapping_ops *pci_dma_ops = &dma_direct_ops;
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static struct dma_map_ops *pci_dma_ops = &dma_direct_ops;
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void set_pci_dma_ops(struct dma_mapping_ops *dma_ops)
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void set_pci_dma_ops(struct dma_map_ops *dma_ops)
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{
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pci_dma_ops = dma_ops;
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}
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struct dma_mapping_ops *get_pci_dma_ops(void)
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struct dma_map_ops *get_pci_dma_ops(void)
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{
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return pci_dma_ops;
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}
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vio_cmo_dealloc(viodev, alloc_size);
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}
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struct dma_mapping_ops vio_dma_mapping_ops = {
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struct dma_map_ops vio_dma_mapping_ops = {
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.alloc_coherent = vio_dma_iommu_alloc_coherent,
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.free_coherent = vio_dma_iommu_free_coherent,
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.map_sg = vio_dma_iommu_map_sg,
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static int dma_set_mask_and_switch(struct device *dev, u64 dma_mask);
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struct dma_mapping_ops dma_iommu_fixed_ops = {
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struct dma_map_ops dma_iommu_fixed_ops = {
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.alloc_coherent = dma_fixed_alloc_coherent,
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.free_coherent = dma_fixed_free_coherent,
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.map_sg = dma_fixed_map_sg,
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return mask >= DMA_BIT_MASK(32);
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}
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static struct dma_mapping_ops ps3_sb_dma_ops = {
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static struct dma_map_ops ps3_sb_dma_ops = {
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.alloc_coherent = ps3_alloc_coherent,
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.free_coherent = ps3_free_coherent,
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.map_sg = ps3_sb_map_sg,
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.unmap_page = ps3_unmap_page,
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};
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static struct dma_mapping_ops ps3_ioc0_dma_ops = {
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static struct dma_map_ops ps3_ioc0_dma_ops = {
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.alloc_coherent = ps3_alloc_coherent,
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.free_coherent = ps3_free_coherent,
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.map_sg = ps3_ioc0_map_sg,
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