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swiotlb: Make internal bookkeeping functions have 'swiotlb_tbl' prefix. 

The functions that operate on io_tlb_list/io_tlb_start/io_tlb_orig_addr
have the prefix 'swiotlb_tbl' now.

See "swiotlb: swiotlb: add swiotlb_tbl_map_single library function" for
full description of patchset.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Albert Herranz <albert_herranz@yahoo.es>
This commit is contained in:
Konrad Rzeszutek Wilk 2010-05-10 15:54:20 -04:00
parent abbceff7d7
commit bfc5501f6d
1 changed files with 13 additions and 11 deletions
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24
lib/swiotlb.c
View File

@ -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;
}