Prev: [PATCH 1/5] swiotlb: add swiotlb_tbl_map_single library function
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From: Konrad Rzeszutek Wilk on 4 Jun 2010 14:00
The functions that operate on io_tlb_list/io_tlb_start/io_tlb_orig_addr
have the prefix 'swiotlb_tbl' now.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk(a)oracle.com>
Acked-by: FUJITA Tomonori <fujita.tomonori(a)lab.ntt.co.jp>
Tested-by: Albert Herranz <albert_herranz(a)yahoo.es>
---
lib/swiotlb.c | 24 +++++++++++++-----------
1 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index ec61e15..1fc15bf 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -61,8 +61,8 @@ enum dma_sync_target {
int swiotlb_force;

/*
- * Used to do a quick range check in unmap_single and
- * sync_single_*, to see if the memory was in fact allocated by this
+ * Used to do a quick range check in swiotlb_tbl_unmap_single and
+ * swiotlb_tbl_sync_single_*, to see if the memory was in fact allocated by this
* API.
*/
static char *io_tlb_start, *io_tlb_end;
@@ -492,7 +492,8 @@ map_single(struct device *hwdev, phys_addr_t phys, size_t size, int dir)
* dma_addr is the kernel virtual address of the bounce buffer to unmap.
*/
static void
-do_unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
+swiotlb_tbl_unmap_single(struct device *hwdev, char *dma_addr, size_t size,
+ int dir)
{
unsigned long flags;
int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
@@ -532,7 +533,7 @@ do_unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
}

static void
-sync_single(struct device *hwdev, char *dma_addr, size_t size,
+swiotlb_tbl_sync_single(struct device *hwdev, char *dma_addr, size_t size,
int dir, int target)
{
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
@@ -580,8 +581,8 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
}
if (!ret) {
/*
- * We are either out of memory or the device can't DMA
- * to GFP_DMA memory; fall back on map_single(), which
+ * We are either out of memory or the device can't DMA to
+ * GFP_DMA memory; fall back on map_single(), which
* will grab memory from the lowest available address range.
*/
ret = map_single(hwdev, 0, size, DMA_FROM_DEVICE);
@@ -599,7 +600,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
(unsigned long long)dev_addr);

/* DMA_TO_DEVICE to avoid memcpy in unmap_single */
- do_unmap_single(hwdev, ret, size, DMA_TO_DEVICE);
+ swiotlb_tbl_unmap_single(hwdev, ret, size, DMA_TO_DEVICE);
return NULL;
}
*dma_handle = dev_addr;
@@ -617,8 +618,8 @@ swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
if (!is_swiotlb_buffer(paddr))
free_pages((unsigned long)vaddr, get_order(size));
else
- /* DMA_TO_DEVICE to avoid memcpy in unmap_single */
- do_unmap_single(hwdev, vaddr, size, DMA_TO_DEVICE);
+ /* DMA_TO_DEVICE to avoid memcpy in swiotlb_tbl_unmap_single */
+ swiotlb_tbl_unmap_single(hwdev, vaddr, size, DMA_TO_DEVICE);
}
EXPORT_SYMBOL(swiotlb_free_coherent);

@@ -708,7 +709,7 @@ static void unmap_single(struct device *hwdev, dma_addr_t dev_addr,
BUG_ON(dir == DMA_NONE);

if (is_swiotlb_buffer(paddr)) {
- do_unmap_single(hwdev, phys_to_virt(paddr), size, dir);
+ swiotlb_tbl_unmap_single(hwdev, phys_to_virt(paddr), size, dir);
return;
}

@@ -751,7 +752,8 @@ swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr,
BUG_ON(dir == DMA_NONE);

if (is_swiotlb_buffer(paddr)) {
- sync_single(hwdev, phys_to_virt(paddr), size, dir, target);
+ swiotlb_tbl_sync_single(hwdev, phys_to_virt(paddr), size, dir,
+ target);
return;
}

--
1.6.2.5

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