diff options
author | Christoph Hellwig <hch@lst.de> | 2016-01-21 02:01:44 +0300 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-21 04:09:18 +0300 |
commit | eae075196305549513335c2fc7d5d63712246bfd (patch) | |
tree | d2f02af2dfc15708f279a69a555b92c91c706fa2 /arch/frv/mb93090-mb00/pci-dma.c | |
parent | 5a1a67f1d7fef42eaa5a4cc3d48094fbec75d685 (diff) | |
download | linux-eae075196305549513335c2fc7d5d63712246bfd.tar.xz |
frv: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: David Howells <dhowells@redhat.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/frv/mb93090-mb00/pci-dma.c')
-rw-r--r-- | arch/frv/mb93090-mb00/pci-dma.c | 74 |
1 files changed, 48 insertions, 26 deletions
diff --git a/arch/frv/mb93090-mb00/pci-dma.c b/arch/frv/mb93090-mb00/pci-dma.c index 4d1f01dc46e5..316b7b65348d 100644 --- a/arch/frv/mb93090-mb00/pci-dma.c +++ b/arch/frv/mb93090-mb00/pci-dma.c @@ -18,7 +18,9 @@ #include <linux/scatterlist.h> #include <asm/io.h> -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); |