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authorJohn W. Linville <linville@tuxdriver.com>2005-09-29 14:43:32 -0700
committerTony Luck <tony.luck@intel.com>2005-09-29 14:43:32 -0700
commit8270f3f1a605c83b3aa516c1eaed209fe0884e84 (patch)
treedbe49f6263658cd9b7ace81fed257009140c0b9e /lib
parent6c654b5fdf093cd05f35f7c9c2a00182fa5636dc (diff)
[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')
-rw-r--r--lib/swiotlb.c45
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

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