MIPS: Convert DMA to use dma-mapping-common.h
Use asm-generic/dma-mapping-common.h to handle all DMA mapping operations and establish a default get_dma_ops() that forwards all operations to the existing code. Augment dev_archdata to carry a pointer to the struct dma_map_ops, allowing DMA operations to be overridden on a per device basis. Currently this is never filled in, so the default dma_map_ops are used. A follow-on patch sets this for Octeon PCI devices. Also initialize the dma_debug system as it is now used if it is configured. Includes fixes by Kevin Cernekee <cernekee@gmail.com>. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1637/ Patchwork: http://patchwork.linux-mips.org/patch/1678/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
parent
43e4f7ae4b
commit
48e1fd5a81
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@ -14,6 +14,8 @@ config MIPS
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select HAVE_KRETPROBES
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select HAVE_KRETPROBES
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select RTC_LIB if !MACH_LOONGSON
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select RTC_LIB if !MACH_LOONGSON
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select GENERIC_ATOMIC64 if !64BIT
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select GENERIC_ATOMIC64 if !64BIT
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select HAVE_DMA_ATTRS
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select HAVE_DMA_API_DEBUG
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menu "Machine selection"
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menu "Machine selection"
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@ -3,4 +3,17 @@
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*
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*
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* This file is released under the GPLv2
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* This file is released under the GPLv2
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*/
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*/
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#include <asm-generic/device.h>
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#ifndef _ASM_MIPS_DEVICE_H
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#define _ASM_MIPS_DEVICE_H
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struct dma_map_ops;
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struct dev_archdata {
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/* DMA operations on that device */
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struct dma_map_ops *dma_ops;
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};
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struct pdev_archdata {
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};
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#endif /* _ASM_MIPS_DEVICE_H*/
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@ -5,51 +5,41 @@
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#include <asm/cache.h>
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#include <asm/cache.h>
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#include <asm-generic/dma-coherent.h>
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#include <asm-generic/dma-coherent.h>
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void *dma_alloc_noncoherent(struct device *dev, size_t size,
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#include <dma-coherence.h>
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dma_addr_t *dma_handle, gfp_t flag);
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void dma_free_noncoherent(struct device *dev, size_t size,
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extern struct dma_map_ops *mips_dma_map_ops;
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void *vaddr, dma_addr_t dma_handle);
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void *dma_alloc_coherent(struct device *dev, size_t size,
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static inline struct dma_map_ops *get_dma_ops(struct device *dev)
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dma_addr_t *dma_handle, gfp_t flag);
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void dma_free_coherent(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
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enum dma_data_direction direction);
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extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
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size_t size, enum dma_data_direction direction);
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extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
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enum dma_data_direction direction);
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extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size, enum dma_data_direction direction);
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static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
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size_t size, enum dma_data_direction direction)
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{
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{
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dma_unmap_single(dev, dma_address, size, direction);
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if (dev && dev->archdata.dma_ops)
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return dev->archdata.dma_ops;
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else
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return mips_dma_map_ops;
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}
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}
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extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
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static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
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int nhwentries, enum dma_data_direction direction);
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{
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extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
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if (!dev->dma_mask)
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size_t size, enum dma_data_direction direction);
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return 0;
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extern void dma_sync_single_for_device(struct device *dev,
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dma_addr_t dma_handle, size_t size, enum dma_data_direction direction);
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return addr + size <= *dev->dma_mask;
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extern void dma_sync_single_range_for_cpu(struct device *dev,
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}
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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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static inline void dma_mark_clean(void *addr, size_t size) {}
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extern void dma_sync_single_range_for_device(struct device *dev,
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dma_addr_t dma_handle, unsigned long offset, size_t size,
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#include <asm-generic/dma-mapping-common.h>
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enum dma_data_direction direction);
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extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
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static inline int dma_supported(struct device *dev, u64 mask)
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int nelems, enum dma_data_direction direction);
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{
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extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
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struct dma_map_ops *ops = get_dma_ops(dev);
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int nelems, enum dma_data_direction direction);
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return ops->dma_supported(dev, mask);
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extern int dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
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}
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extern int dma_supported(struct device *dev, u64 mask);
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static inline int dma_mapping_error(struct device *dev, u64 mask)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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return ops->mapping_error(dev, mask);
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}
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static inline int
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static inline int
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dma_set_mask(struct device *dev, u64 mask)
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dma_set_mask(struct device *dev, u64 mask)
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@ -65,4 +55,34 @@ dma_set_mask(struct device *dev, u64 mask)
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extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
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extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
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enum dma_data_direction direction);
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enum dma_data_direction direction);
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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 gfp)
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{
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void *ret;
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struct dma_map_ops *ops = get_dma_ops(dev);
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ret = ops->alloc_coherent(dev, size, dma_handle, gfp);
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debug_dma_alloc_coherent(dev, size, *dma_handle, ret);
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return ret;
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}
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static inline void dma_free_coherent(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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ops->free_coherent(dev, size, vaddr, dma_handle);
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debug_dma_free_coherent(dev, size, vaddr, dma_handle);
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}
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void *dma_alloc_noncoherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t flag);
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void dma_free_noncoherent(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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#endif /* _ASM_DMA_MAPPING_H */
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#endif /* _ASM_DMA_MAPPING_H */
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@ -27,7 +27,7 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
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static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
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static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
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struct page *page)
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struct page *page)
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{
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{
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return octeon_map_dma_mem(dev, page_address(page), PAGE_SIZE);
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BUG();
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}
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}
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static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
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static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
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@ -26,7 +26,8 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
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return pa;
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return pa;
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}
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}
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static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
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static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
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struct page *page)
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{
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{
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dma_addr_t pa = dev_to_baddr(dev, page_to_phys(page));
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dma_addr_t pa = dev_to_baddr(dev, page_to_phys(page));
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@ -37,7 +37,8 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
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return pa;
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return pa;
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}
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}
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static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
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static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
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struct page *page)
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{
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{
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dma_addr_t pa;
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dma_addr_t pa;
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@ -17,7 +17,8 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t
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return vdma_alloc(virt_to_phys(addr), size);
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return vdma_alloc(virt_to_phys(addr), size);
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}
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}
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static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
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static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
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struct page *page)
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{
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{
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return vdma_alloc(page_to_phys(page), PAGE_SIZE);
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return vdma_alloc(page_to_phys(page), PAGE_SIZE);
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}
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}
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@ -95,10 +95,9 @@ void *dma_alloc_noncoherent(struct device *dev, size_t size,
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return ret;
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return ret;
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}
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}
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EXPORT_SYMBOL(dma_alloc_noncoherent);
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EXPORT_SYMBOL(dma_alloc_noncoherent);
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void *dma_alloc_coherent(struct device *dev, size_t size,
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static void *mips_dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t * dma_handle, gfp_t gfp)
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dma_addr_t * dma_handle, gfp_t gfp)
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{
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{
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void *ret;
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void *ret;
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return ret;
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return ret;
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}
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}
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EXPORT_SYMBOL(dma_alloc_coherent);
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void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
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void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
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dma_addr_t dma_handle)
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dma_addr_t dma_handle)
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plat_unmap_dma_mem(dev, dma_handle, size, DMA_BIDIRECTIONAL);
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plat_unmap_dma_mem(dev, dma_handle, size, DMA_BIDIRECTIONAL);
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free_pages((unsigned long) vaddr, get_order(size));
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free_pages((unsigned long) vaddr, get_order(size));
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}
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}
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EXPORT_SYMBOL(dma_free_noncoherent);
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EXPORT_SYMBOL(dma_free_noncoherent);
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void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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static void mips_dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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dma_addr_t dma_handle)
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dma_addr_t dma_handle)
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{
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{
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unsigned long addr = (unsigned long) vaddr;
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unsigned long addr = (unsigned long) vaddr;
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@ -151,8 +148,6 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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free_pages(addr, get_order(size));
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free_pages(addr, get_order(size));
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}
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}
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EXPORT_SYMBOL(dma_free_coherent);
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static inline void __dma_sync(unsigned long addr, size_t size,
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static inline void __dma_sync(unsigned long addr, size_t size,
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enum dma_data_direction direction)
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enum dma_data_direction direction)
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{
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{
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@ -174,21 +169,8 @@ static inline void __dma_sync(unsigned long addr, size_t size,
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}
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}
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}
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}
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dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
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static void mips_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
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enum dma_data_direction direction)
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size_t size, enum dma_data_direction direction, struct dma_attrs *attrs)
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{
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unsigned long addr = (unsigned long) ptr;
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if (!plat_device_is_coherent(dev))
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__dma_sync(addr, size, direction);
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return plat_map_dma_mem(dev, ptr, size);
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}
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EXPORT_SYMBOL(dma_map_single);
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void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
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enum dma_data_direction direction)
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{
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{
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if (cpu_is_noncoherent_r10000(dev))
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if (cpu_is_noncoherent_r10000(dev))
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__dma_sync(dma_addr_to_virt(dev, dma_addr), size,
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__dma_sync(dma_addr_to_virt(dev, dma_addr), size,
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@ -197,15 +179,11 @@ void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
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plat_unmap_dma_mem(dev, dma_addr, size, direction);
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plat_unmap_dma_mem(dev, dma_addr, size, direction);
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}
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}
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EXPORT_SYMBOL(dma_unmap_single);
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static int mips_dma_map_sg(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
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int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
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enum dma_data_direction direction)
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{
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{
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int i;
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int i;
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BUG_ON(direction == DMA_NONE);
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for (i = 0; i < nents; i++, sg++) {
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for (i = 0; i < nents; i++, sg++) {
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unsigned long addr;
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unsigned long addr;
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@ -219,33 +197,27 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
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return nents;
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return nents;
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}
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}
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EXPORT_SYMBOL(dma_map_sg);
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static dma_addr_t mips_dma_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size, enum dma_data_direction direction,
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dma_addr_t dma_map_page(struct device *dev, struct page *page,
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struct dma_attrs *attrs)
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unsigned long offset, size_t size, enum dma_data_direction direction)
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{
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{
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BUG_ON(direction == DMA_NONE);
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unsigned long addr;
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if (!plat_device_is_coherent(dev)) {
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addr = (unsigned long) page_address(page) + offset;
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unsigned long addr;
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addr = (unsigned long) page_address(page) + offset;
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if (!plat_device_is_coherent(dev))
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__dma_sync(addr, size, direction);
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__dma_sync(addr, size, direction);
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}
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return plat_map_dma_mem_page(dev, page) + offset;
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return plat_map_dma_mem(dev, (void *)addr, size);
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}
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}
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EXPORT_SYMBOL(dma_map_page);
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static void mips_dma_unmap_sg(struct device *dev, struct scatterlist *sg,
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int nhwentries, enum dma_data_direction direction,
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void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
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struct dma_attrs *attrs)
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enum dma_data_direction direction)
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{
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{
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unsigned long addr;
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unsigned long addr;
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int i;
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int i;
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BUG_ON(direction == DMA_NONE);
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for (i = 0; i < nhwentries; i++, sg++) {
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for (i = 0; i < nhwentries; i++, sg++) {
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if (!plat_device_is_coherent(dev) &&
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if (!plat_device_is_coherent(dev) &&
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direction != DMA_TO_DEVICE) {
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direction != DMA_TO_DEVICE) {
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@ -257,13 +229,9 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
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}
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}
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}
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}
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EXPORT_SYMBOL(dma_unmap_sg);
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static void mips_dma_sync_single_for_cpu(struct device *dev,
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dma_addr_t dma_handle, size_t size, enum dma_data_direction direction)
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void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
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size_t size, enum dma_data_direction direction)
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{
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{
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BUG_ON(direction == DMA_NONE);
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if (cpu_is_noncoherent_r10000(dev)) {
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if (cpu_is_noncoherent_r10000(dev)) {
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unsigned long addr;
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unsigned long addr;
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||||||
|
@ -272,13 +240,9 @@ void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_sync_single_for_cpu);
|
static void mips_dma_sync_single_for_device(struct device *dev,
|
||||||
|
dma_addr_t dma_handle, size_t size, enum dma_data_direction direction)
|
||||||
void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
|
|
||||||
size_t size, enum dma_data_direction direction)
|
|
||||||
{
|
{
|
||||||
BUG_ON(direction == DMA_NONE);
|
|
||||||
|
|
||||||
plat_extra_sync_for_device(dev);
|
plat_extra_sync_for_device(dev);
|
||||||
if (!plat_device_is_coherent(dev)) {
|
if (!plat_device_is_coherent(dev)) {
|
||||||
unsigned long addr;
|
unsigned long addr;
|
||||||
|
@ -288,46 +252,11 @@ void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_sync_single_for_device);
|
static void mips_dma_sync_sg_for_cpu(struct device *dev,
|
||||||
|
struct scatterlist *sg, int nelems, enum dma_data_direction direction)
|
||||||
void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
|
|
||||||
unsigned long offset, size_t size, enum dma_data_direction direction)
|
|
||||||
{
|
|
||||||
BUG_ON(direction == DMA_NONE);
|
|
||||||
|
|
||||||
if (cpu_is_noncoherent_r10000(dev)) {
|
|
||||||
unsigned long addr;
|
|
||||||
|
|
||||||
addr = dma_addr_to_virt(dev, dma_handle);
|
|
||||||
__dma_sync(addr + offset, size, direction);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
|
|
||||||
|
|
||||||
void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
|
|
||||||
unsigned long offset, size_t size, enum dma_data_direction direction)
|
|
||||||
{
|
|
||||||
BUG_ON(direction == DMA_NONE);
|
|
||||||
|
|
||||||
plat_extra_sync_for_device(dev);
|
|
||||||
if (!plat_device_is_coherent(dev)) {
|
|
||||||
unsigned long addr;
|
|
||||||
|
|
||||||
addr = dma_addr_to_virt(dev, dma_handle);
|
|
||||||
__dma_sync(addr + offset, size, direction);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_sync_single_range_for_device);
|
|
||||||
|
|
||||||
void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
|
|
||||||
enum dma_data_direction direction)
|
|
||||||
{
|
{
|
||||||
int i;
|
int i;
|
||||||
|
|
||||||
BUG_ON(direction == DMA_NONE);
|
|
||||||
|
|
||||||
/* Make sure that gcc doesn't leave the empty loop body. */
|
/* Make sure that gcc doesn't leave the empty loop body. */
|
||||||
for (i = 0; i < nelems; i++, sg++) {
|
for (i = 0; i < nelems; i++, sg++) {
|
||||||
if (cpu_is_noncoherent_r10000(dev))
|
if (cpu_is_noncoherent_r10000(dev))
|
||||||
|
@ -336,15 +265,11 @@ void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_sync_sg_for_cpu);
|
static void mips_dma_sync_sg_for_device(struct device *dev,
|
||||||
|
struct scatterlist *sg, int nelems, enum dma_data_direction direction)
|
||||||
void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
|
|
||||||
enum dma_data_direction direction)
|
|
||||||
{
|
{
|
||||||
int i;
|
int i;
|
||||||
|
|
||||||
BUG_ON(direction == DMA_NONE);
|
|
||||||
|
|
||||||
/* Make sure that gcc doesn't leave the empty loop body. */
|
/* Make sure that gcc doesn't leave the empty loop body. */
|
||||||
for (i = 0; i < nelems; i++, sg++) {
|
for (i = 0; i < nelems; i++, sg++) {
|
||||||
if (!plat_device_is_coherent(dev))
|
if (!plat_device_is_coherent(dev))
|
||||||
|
@ -353,24 +278,18 @@ void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nele
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_sync_sg_for_device);
|
int mips_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
|
||||||
|
|
||||||
int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
|
|
||||||
{
|
{
|
||||||
return plat_dma_mapping_error(dev, dma_addr);
|
return plat_dma_mapping_error(dev, dma_addr);
|
||||||
}
|
}
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_mapping_error);
|
int mips_dma_supported(struct device *dev, u64 mask)
|
||||||
|
|
||||||
int dma_supported(struct device *dev, u64 mask)
|
|
||||||
{
|
{
|
||||||
return plat_dma_supported(dev, mask);
|
return plat_dma_supported(dev, mask);
|
||||||
}
|
}
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_supported);
|
void mips_dma_cache_sync(struct device *dev, void *vaddr, size_t size,
|
||||||
|
enum dma_data_direction direction)
|
||||||
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
|
|
||||||
enum dma_data_direction direction)
|
|
||||||
{
|
{
|
||||||
BUG_ON(direction == DMA_NONE);
|
BUG_ON(direction == DMA_NONE);
|
||||||
|
|
||||||
|
@ -379,4 +298,30 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
|
||||||
__dma_sync((unsigned long)vaddr, size, direction);
|
__dma_sync((unsigned long)vaddr, size, direction);
|
||||||
}
|
}
|
||||||
|
|
||||||
EXPORT_SYMBOL(dma_cache_sync);
|
static struct dma_map_ops mips_default_dma_map_ops = {
|
||||||
|
.alloc_coherent = mips_dma_alloc_coherent,
|
||||||
|
.free_coherent = mips_dma_free_coherent,
|
||||||
|
.map_page = mips_dma_map_page,
|
||||||
|
.unmap_page = mips_dma_unmap_page,
|
||||||
|
.map_sg = mips_dma_map_sg,
|
||||||
|
.unmap_sg = mips_dma_unmap_sg,
|
||||||
|
.sync_single_for_cpu = mips_dma_sync_single_for_cpu,
|
||||||
|
.sync_single_for_device = mips_dma_sync_single_for_device,
|
||||||
|
.sync_sg_for_cpu = mips_dma_sync_sg_for_cpu,
|
||||||
|
.sync_sg_for_device = mips_dma_sync_sg_for_device,
|
||||||
|
.mapping_error = mips_dma_mapping_error,
|
||||||
|
.dma_supported = mips_dma_supported
|
||||||
|
};
|
||||||
|
|
||||||
|
struct dma_map_ops *mips_dma_map_ops = &mips_default_dma_map_ops;
|
||||||
|
EXPORT_SYMBOL(mips_dma_map_ops);
|
||||||
|
|
||||||
|
#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
|
||||||
|
|
||||||
|
static int __init mips_dma_init(void)
|
||||||
|
{
|
||||||
|
dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
fs_initcall(mips_dma_init);
|
||||||
|
|
Loading…
Reference in a new issue