From eae075196305549513335c2fc7d5d63712246bfd Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 20 Jan 2016 15:01:44 -0800 Subject: frv: convert to dma_map_ops Signed-off-by: Christoph Hellwig Cc: David Howells Cc: Christian Borntraeger Cc: Joerg Roedel Cc: Sebastian Ott Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/frv/mb93090-mb00/pci-dma.c | 74 ++++++++++++++++++++++++++--------------- 1 file changed, 48 insertions(+), 26 deletions(-) (limited to 'arch/frv/mb93090-mb00/pci-dma.c') diff --git a/arch/frv/mb93090-mb00/pci-dma.c b/arch/frv/mb93090-mb00/pci-dma.c index 4d1f01d..316b7b6 100644 --- a/arch/frv/mb93090-mb00/pci-dma.c +++ b/arch/frv/mb93090-mb00/pci-dma.c @@ -18,7 +18,9 @@ #include #include -void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) +static void *frv_dma_alloc(struct device *hwdev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, + struct dma_attrs *attrs) { void *ret; @@ -29,29 +31,15 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand return ret; } -EXPORT_SYMBOL(dma_alloc_coherent); - -void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) +static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { consistent_free(vaddr); } -EXPORT_SYMBOL(dma_free_coherent); - -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - - frv_cache_wback_inv((unsigned long) ptr, (unsigned long) ptr + size); - - return virt_to_bus(ptr); -} - -EXPORT_SYMBOL(dma_map_single); - -int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) +static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { unsigned long dampr2; void *vaddr; @@ -79,14 +67,48 @@ int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, return nents; } -EXPORT_SYMBOL(dma_map_sg); - -dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) +static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) { - BUG_ON(direction == DMA_NONE); flush_dcache_page(page); return (dma_addr_t) page_to_phys(page) + offset; } -EXPORT_SYMBOL(dma_map_page); +static void frv_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + +static void frv_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + + +static int frv_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < 0x00ffffff) + return 0; + return 1; +} + +struct dma_map_ops frv_dma_ops = { + .alloc = frv_dma_alloc, + .free = frv_dma_free, + .map_page = frv_dma_map_page, + .map_sg = frv_dma_map_sg, + .sync_single_for_device = frv_dma_sync_single_for_device, + .sync_sg_for_device = frv_dma_sync_sg_for_device, + .dma_supported = frv_dma_supported, +}; +EXPORT_SYMBOL(frv_dma_ops); -- cgit v1.1