diff options
author | Christoph Hellwig <hch@lst.de> | 2016-01-20 15:01:35 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-20 17:09:18 -0800 |
commit | 4605f04b2893fb5498b31c54e8f21da2fc4cc736 (patch) | |
tree | dc9ae4048408b1a6eb0a3ecbd7e99feb9a9172ab /arch/c6x/kernel | |
parent | 6f62097583e799040d6d18909b670b1e4dbb614d (diff) | |
download | op-kernel-dev-4605f04b2893fb5498b31c54e8f21da2fc4cc736.zip op-kernel-dev-4605f04b2893fb5498b31c54e8f21da2fc4cc736.tar.gz |
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>
Diffstat (limited to 'arch/c6x/kernel')
-rw-r--r-- | arch/c6x/kernel/dma.c | 95 |
1 files changed, 43 insertions, 52 deletions
diff --git a/arch/c6x/kernel/dma.c b/arch/c6x/kernel/dma.c index ab7b12d..8a80f3a 100644 --- a/arch/c6x/kernel/dma.c +++ b/arch/c6x/kernel/dma.c @@ -36,110 +36,101 @@ static void c6x_dma_sync(dma_addr_t handle, size_t size, } } -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction dir) +static dma_addr_t c6x_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 addr = virt_to_phys(ptr); + dma_addr_t handle = virt_to_phys(page_address(page) + offset); - c6x_dma_sync(addr, size, dir); - - debug_dma_map_page(dev, virt_to_page(ptr), - (unsigned long)ptr & ~PAGE_MASK, size, - dir, addr, true); - return addr; + c6x_dma_sync(handle, size, dir); + return handle; } -EXPORT_SYMBOL(dma_map_single); - -void dma_unmap_single(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_unmap_page(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { c6x_dma_sync(handle, size, dir); - - debug_dma_unmap_page(dev, handle, size, dir, true); } -EXPORT_SYMBOL(dma_unmap_single); - -int dma_map_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static int c6x_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { struct scatterlist *sg; int i; - for_each_sg(sglist, sg, nents, i) - sg->dma_address = dma_map_single(dev, sg_virt(sg), sg->length, - dir); - - debug_dma_map_sg(dev, sglist, nents, nents, dir); + for_each_sg(sglist, sg, nents, i) { + sg->dma_address = sg_phys(sg); + c6x_dma_sync(sg->dma_address, sg->length, dir); + } return nents; } -EXPORT_SYMBOL(dma_map_sg); - -void dma_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction dir, + struct dma_attrs *attrs) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_unmap_single(dev, sg_dma_address(sg), sg->length, dir); + c6x_dma_sync(sg_dma_address(sg), sg->length, dir); - debug_dma_unmap_sg(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_unmap_sg); -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) { c6x_dma_sync(handle, size, dir); - debug_dma_sync_single_for_cpu(dev, handle, size, dir); } -EXPORT_SYMBOL(dma_sync_single_for_cpu); - -void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_sync_single_for_device(struct device *dev, + dma_addr_t handle, size_t size, enum dma_data_direction dir) { c6x_dma_sync(handle, size, dir); - debug_dma_sync_single_for_device(dev, handle, size, dir); } -EXPORT_SYMBOL(dma_sync_single_for_device); - -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sglist, int nents, + enum dma_data_direction dir) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_sync_single_for_cpu(dev, sg_dma_address(sg), + c6x_dma_sync_single_for_cpu(dev, sg_dma_address(sg), sg->length, dir); - debug_dma_sync_sg_for_cpu(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_sync_sg_for_cpu); - -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sglist, int nents, + enum dma_data_direction dir) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_sync_single_for_device(dev, sg_dma_address(sg), + c6x_dma_sync_single_for_device(dev, sg_dma_address(sg), sg->length, dir); - debug_dma_sync_sg_for_device(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_sync_sg_for_device); +struct dma_map_ops c6x_dma_ops = { + .alloc = c6x_dma_alloc, + .free = c6x_dma_free, + .map_page = c6x_dma_map_page, + .unmap_page = c6x_dma_unmap_page, + .map_sg = c6x_dma_map_sg, + .unmap_sg = c6x_dma_unmap_sg, + .sync_single_for_device = c6x_dma_sync_single_for_device, + .sync_single_for_cpu = c6x_dma_sync_single_for_cpu, + .sync_sg_for_device = c6x_dma_sync_sg_for_device, + .sync_sg_for_cpu = c6x_dma_sync_sg_for_cpu, +}; +EXPORT_SYMBOL(c6x_dma_ops); /* Number of entries preallocated for DMA-API debugging */ #define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) |