c6x: convert to dma_map_ops
[dan.carpenter@oracle.com: C6X: fix build breakage] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig
Linus Torvalds
parent
6f62097583
commit
4605f04b28
4 changed files with 60 additions and 149 deletions
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@ -17,6 +17,8 @@ config C6X
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select OF_EARLY_FLATTREE
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select GENERIC_CLOCKEVENTS
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select MODULES_USE_ELF_RELA
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select ARCH_NO_COHERENT_DMA_MMAP
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select HAVE_DMA_ATTRS
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config MMU
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def_bool n
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@ -12,104 +12,24 @@
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#ifndef _ASM_C6X_DMA_MAPPING_H
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#define _ASM_C6X_DMA_MAPPING_H
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#include <linux/dma-debug.h>
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#include <asm-generic/dma-coherent.h>
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#define dma_supported(d, m) 1
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static inline void dma_sync_single_range_for_device(struct device *dev,
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dma_addr_t addr,
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unsigned long offset,
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size_t size,
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enum dma_data_direction dir)
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{
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}
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static inline int dma_set_mask(struct device *dev, u64 dma_mask)
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{
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if (!dev->dma_mask || !dma_supported(dev, dma_mask))
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return -EIO;
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*dev->dma_mask = dma_mask;
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return 0;
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}
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/*
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* DMA errors are defined by all-bits-set in the DMA address.
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*/
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static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
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#define DMA_ERROR_CODE ~0
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extern struct dma_map_ops c6x_dma_ops;
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static inline struct dma_map_ops *get_dma_ops(struct device *dev)
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{
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debug_dma_mapping_error(dev, dma_addr);
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return dma_addr == ~0;
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return &c6x_dma_ops;
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}
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extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
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size_t size, enum dma_data_direction dir);
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extern void dma_unmap_single(struct device *dev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir);
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extern int dma_map_sg(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction direction);
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extern void dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction direction);
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static inline dma_addr_t dma_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 dir)
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{
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dma_addr_t handle;
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handle = dma_map_single(dev, page_address(page) + offset, size, dir);
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debug_dma_map_page(dev, page, offset, size, dir, handle, false);
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return handle;
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}
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static inline void dma_unmap_page(struct device *dev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir)
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{
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dma_unmap_single(dev, handle, size, dir);
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debug_dma_unmap_page(dev, handle, size, dir, false);
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}
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extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir);
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extern void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
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size_t size,
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enum dma_data_direction dir);
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extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction dir);
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extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction dir);
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#include <asm-generic/dma-mapping-common.h>
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extern void coherent_mem_init(u32 start, u32 size);
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extern void *dma_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t);
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extern void dma_free_coherent(struct device *, size_t, void *, dma_addr_t);
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#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent((d), (s), (h), (f))
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#define dma_free_noncoherent(d, s, v, h) dma_free_coherent((d), (s), (v), (h))
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/* Not supported for now */
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static inline int dma_mmap_coherent(struct device *dev,
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struct vm_area_struct *vma, void *cpu_addr,
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dma_addr_t dma_addr, size_t size)
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{
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return -EINVAL;
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}
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static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt,
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void *cpu_addr, dma_addr_t dma_addr,
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size_t size)
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{
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return -EINVAL;
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}
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void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
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gfp_t gfp, struct dma_attrs *attrs);
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void c6x_dma_free(struct device *dev, size_t size, void *vaddr,
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dma_addr_t dma_handle, struct dma_attrs *attrs);
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#endif /* _ASM_C6X_DMA_MAPPING_H */
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@ -36,110 +36,101 @@ static void c6x_dma_sync(dma_addr_t handle, size_t size,
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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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enum dma_data_direction dir)
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static dma_addr_t c6x_dma_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size, enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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dma_addr_t addr = virt_to_phys(ptr);
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dma_addr_t handle = virt_to_phys(page_address(page) + offset);
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c6x_dma_sync(addr, size, dir);
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debug_dma_map_page(dev, virt_to_page(ptr),
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(unsigned long)ptr & ~PAGE_MASK, size,
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dir, addr, true);
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return addr;
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c6x_dma_sync(handle, size, dir);
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return handle;
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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 handle,
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size_t size, enum dma_data_direction dir)
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static void c6x_dma_unmap_page(struct device *dev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir, struct dma_attrs *attrs)
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{
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c6x_dma_sync(handle, size, dir);
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debug_dma_unmap_page(dev, handle, size, dir, true);
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}
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EXPORT_SYMBOL(dma_unmap_single);
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int dma_map_sg(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction dir)
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static int c6x_dma_map_sg(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction dir, struct dma_attrs *attrs)
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{
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struct scatterlist *sg;
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int i;
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for_each_sg(sglist, sg, nents, i)
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sg->dma_address = dma_map_single(dev, sg_virt(sg), sg->length,
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dir);
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debug_dma_map_sg(dev, sglist, nents, nents, dir);
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for_each_sg(sglist, sg, nents, i) {
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sg->dma_address = sg_phys(sg);
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c6x_dma_sync(sg->dma_address, sg->length, dir);
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}
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return nents;
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}
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EXPORT_SYMBOL(dma_map_sg);
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void dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction dir)
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static void c6x_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct scatterlist *sg;
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int i;
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for_each_sg(sglist, sg, nents, i)
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dma_unmap_single(dev, sg_dma_address(sg), sg->length, dir);
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c6x_dma_sync(sg_dma_address(sg), sg->length, dir);
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debug_dma_unmap_sg(dev, sglist, nents, dir);
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}
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EXPORT_SYMBOL(dma_unmap_sg);
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void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir)
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static void c6x_dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir)
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{
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c6x_dma_sync(handle, size, dir);
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debug_dma_sync_single_for_cpu(dev, handle, size, dir);
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}
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EXPORT_SYMBOL(dma_sync_single_for_cpu);
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void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir)
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static void c6x_dma_sync_single_for_device(struct device *dev,
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dma_addr_t handle, size_t size, enum dma_data_direction dir)
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{
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c6x_dma_sync(handle, size, dir);
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debug_dma_sync_single_for_device(dev, handle, size, dir);
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}
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EXPORT_SYMBOL(dma_sync_single_for_device);
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void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction dir)
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static void c6x_dma_sync_sg_for_cpu(struct device *dev,
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struct scatterlist *sglist, int nents,
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enum dma_data_direction dir)
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{
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struct scatterlist *sg;
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int i;
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for_each_sg(sglist, sg, nents, i)
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dma_sync_single_for_cpu(dev, sg_dma_address(sg),
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c6x_dma_sync_single_for_cpu(dev, sg_dma_address(sg),
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sg->length, dir);
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debug_dma_sync_sg_for_cpu(dev, sglist, nents, dir);
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}
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EXPORT_SYMBOL(dma_sync_sg_for_cpu);
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void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction dir)
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static void c6x_dma_sync_sg_for_device(struct device *dev,
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struct scatterlist *sglist, int nents,
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enum dma_data_direction dir)
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{
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struct scatterlist *sg;
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int i;
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for_each_sg(sglist, sg, nents, i)
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dma_sync_single_for_device(dev, sg_dma_address(sg),
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c6x_dma_sync_single_for_device(dev, sg_dma_address(sg),
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sg->length, dir);
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debug_dma_sync_sg_for_device(dev, sglist, nents, dir);
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}
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EXPORT_SYMBOL(dma_sync_sg_for_device);
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struct dma_map_ops c6x_dma_ops = {
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.alloc = c6x_dma_alloc,
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.free = c6x_dma_free,
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.map_page = c6x_dma_map_page,
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.unmap_page = c6x_dma_unmap_page,
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.map_sg = c6x_dma_map_sg,
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.unmap_sg = c6x_dma_unmap_sg,
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.sync_single_for_device = c6x_dma_sync_single_for_device,
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.sync_single_for_cpu = c6x_dma_sync_single_for_cpu,
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.sync_sg_for_device = c6x_dma_sync_sg_for_device,
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.sync_sg_for_cpu = c6x_dma_sync_sg_for_cpu,
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};
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EXPORT_SYMBOL(c6x_dma_ops);
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/* Number of entries preallocated for DMA-API debugging */
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#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
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@ -73,8 +73,8 @@ static void __free_dma_pages(u32 addr, int order)
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* Allocate DMA coherent memory space and return both the kernel
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* virtual and DMA address for that space.
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*/
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void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *handle, gfp_t gfp)
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void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
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gfp_t gfp, struct dma_attrs *attrs)
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{
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u32 paddr;
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int order;
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@ -94,13 +94,12 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
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return phys_to_virt(paddr);
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}
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EXPORT_SYMBOL(dma_alloc_coherent);
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/*
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* Free DMA coherent memory as defined by the above mapping.
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*/
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void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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dma_addr_t dma_handle)
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void c6x_dma_free(struct device *dev, size_t size, void *vaddr,
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dma_addr_t dma_handle, struct dma_attrs *attrs)
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{
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int order;
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@ -111,7 +110,6 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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__free_dma_pages(virt_to_phys(vaddr), order);
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}
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EXPORT_SYMBOL(dma_free_coherent);
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/*
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* Initialise the coherent DMA memory allocator using the given uncached region.
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