diff options
author | Christoph Hellwig <hch@lst.de> | 2016-01-20 15:01:32 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-20 17:09:18 -0800 |
commit | 6f62097583e799040d6d18909b670b1e4dbb614d (patch) | |
tree | 8af751b0083030217216c7f667fef84bdc7e8335 /arch/blackfin/kernel/dma-mapping.c | |
parent | a34a517ac96c6910a3a0aab9513035bfbed0020c (diff) | |
download | op-kernel-dev-6f62097583e799040d6d18909b670b1e4dbb614d.zip op-kernel-dev-6f62097583e799040d6d18909b670b1e4dbb614d.tar.gz |
blackfin: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Steven Miao <realmz6@gmail.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>
Diffstat (limited to 'arch/blackfin/kernel/dma-mapping.c')
-rw-r--r-- | arch/blackfin/kernel/dma-mapping.c | 52 |
1 files changed, 38 insertions, 14 deletions
diff --git a/arch/blackfin/kernel/dma-mapping.c b/arch/blackfin/kernel/dma-mapping.c index df437e5..771afe6 100644 --- a/arch/blackfin/kernel/dma-mapping.c +++ b/arch/blackfin/kernel/dma-mapping.c @@ -78,8 +78,8 @@ static void __free_dma_pages(unsigned long addr, unsigned int pages) spin_unlock_irqrestore(&dma_page_lock, flags); } -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) +static void *bfin_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { void *ret; @@ -92,15 +92,12 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return ret; } -EXPORT_SYMBOL(dma_alloc_coherent); -void -dma_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle) +static void bfin_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { __free_dma_pages((unsigned long)vaddr, get_pages(size)); } -EXPORT_SYMBOL(dma_free_coherent); /* * Streaming DMA mappings @@ -112,9 +109,9 @@ void __dma_sync(dma_addr_t addr, size_t size, } EXPORT_SYMBOL(__dma_sync); -int -dma_map_sg(struct device *dev, struct scatterlist *sg_list, int nents, - enum dma_data_direction direction) +static int bfin_dma_map_sg(struct device *dev, struct scatterlist *sg_list, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { struct scatterlist *sg; int i; @@ -126,10 +123,10 @@ dma_map_sg(struct device *dev, struct scatterlist *sg_list, int nents, return nents; } -EXPORT_SYMBOL(dma_map_sg); -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg_list, - int nelems, enum dma_data_direction direction) +static void bfin_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg_list, int nelems, + enum dma_data_direction direction) { struct scatterlist *sg; int i; @@ -139,4 +136,31 @@ void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg_list, __dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction); } } -EXPORT_SYMBOL(dma_sync_sg_for_device); + +static dma_addr_t bfin_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + dma_addr_t handle = (dma_addr_t)(page_address(page) + offset); + + _dma_sync(handle, size, dir); + return handle; +} + +static inline void bfin_dma_sync_single_for_device(struct device *dev, + dma_addr_t handle, size_t size, enum dma_data_direction dir) +{ + _dma_sync(handle, size, dir); +} + +struct dma_map_ops bfin_dma_ops = { + .alloc = bfin_dma_alloc, + .free = bfin_dma_free, + + .map_page = bfin_dma_map_page, + .map_sg = bfin_dma_map_sg, + + .sync_single_for_device = bfin_dma_sync_single_for_device, + .sync_sg_for_device = bfin_dma_sync_sg_for_device, +}; +EXPORT_SYMBOL(bfin_dma_ops); |