diff options
| author | John W. Linville <linville@tuxdriver.com> | 2005-09-30 01:43:32 +0400 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-09-30 01:43:32 +0400 |
| commit | 8270f3f1a605c83b3aa516c1eaed209fe0884e84 (patch) | |
| tree | dbe49f6263658cd9b7ace81fed257009140c0b9e /lib/swiotlb.c | |
| parent | 6c654b5fdf093cd05f35f7c9c2a00182fa5636dc (diff) | |
| download | linux-8270f3f1a605c83b3aa516c1eaed209fe0884e84.tar.xz | |
[PATCH] swiotlb: cleanup some code duplication cruft
The implementations of swiotlb_sync_single_for_{cpu,device} are
identical. Likewise for swiotlb_syng_sg_for_{cpu,device}. This patch
move the guts of those functions to two new inline functions, and
calls the appropriate one from the bodies of those functions.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'lib/swiotlb.c')
| -rw-r--r-- | lib/swiotlb.c | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 875b0c16250c..9719a14649e7 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -594,9 +594,9 @@ swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size, * address back to the card, you must first perform a * swiotlb_dma_sync_for_device, and then the device again owns the buffer */ -void -swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr, - size_t size, int dir) +static inline void +swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr, + size_t size, int dir) { char *dma_addr = phys_to_virt(dev_addr); @@ -609,17 +609,17 @@ swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr, } void +swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr, + size_t size, int dir) +{ + swiotlb_sync_single(hwdev, dev_addr, size, dir); +} + +void swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr, size_t size, int dir) { - char *dma_addr = phys_to_virt(dev_addr); - - if (dir == DMA_NONE) - BUG(); - if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end) - sync_single(hwdev, dma_addr, size, dir); - else if (dir == DMA_FROM_DEVICE) - mark_clean(dma_addr, size); + swiotlb_sync_single(hwdev, dev_addr, size, dir); } /* @@ -696,9 +696,9 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems, * The same as swiotlb_sync_single_* but for a scatter-gather list, same rules * and usage. */ -void -swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, - int nelems, int dir) +static inline void +swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sg, + int nelems, int dir) { int i; @@ -712,18 +712,17 @@ swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, } void +swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, + int nelems, int dir) +{ + swiotlb_sync_sg(hwdev, sg, nelems, dir); +} + +void swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, int nelems, int dir) { - int i; - - if (dir == DMA_NONE) - BUG(); - - for (i = 0; i < nelems; i++, sg++) - if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg)) - sync_single(hwdev, (void *) sg->dma_address, - sg->dma_length, dir); + swiotlb_sync_sg(hwdev, sg, nelems, dir); } int |