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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2010-05-28 19:37:10 +0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2010-06-07 19:59:27 +0400
commitd7ef1533a90f432615d25729c2477bac9e72051d (patch)
tree1cb27e7e3e7341b870ca94bcd38e9da1115ef11b /include/linux/swiotlb.h
parent22d48269984fc93a71f65a54aa422aacf5fdb926 (diff)
downloadlinux-d7ef1533a90f432615d25729c2477bac9e72051d.tar.xz
swiotlb: Make swiotlb bookkeeping functions visible in the header file.
We put the functions dealing with the operations on the SWIOTLB buffer in the header and make those functions non-static. And also make the functions exported via EXPORT_SYMBOL_GPL. See "swiotlb: swiotlb: add swiotlb_tbl_map_single library function" for full description of patchset. [v2: swiotlb_sync_single_range_for_* no more. Remove usage.] 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>
Diffstat (limited to 'include/linux/swiotlb.h')
-rw-r--r--include/linux/swiotlb.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 250d766f17f7..8c0e349f4a6c 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -25,6 +25,28 @@ extern int swiotlb_force;
extern void swiotlb_init(int verbose);
extern void swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose);
+/*
+ * Enumeration for sync targets
+ */
+enum dma_sync_target {
+ SYNC_FOR_CPU = 0,
+ SYNC_FOR_DEVICE = 1,
+};
+extern void *swiotlb_tbl_map_single(struct device *hwdev, dma_addr_t tbl_dma_addr,
+ phys_addr_t phys, size_t size,
+ enum dma_data_direction dir);
+
+extern void swiotlb_tbl_unmap_single(struct device *hwdev, char *dma_addr,
+ size_t size, enum dma_data_direction dir);
+
+extern void swiotlb_tbl_sync_single(struct device *hwdev, char *dma_addr,
+ size_t size, enum dma_data_direction dir,
+ enum dma_sync_target target);
+
+/* Accessory functions. */
+extern void swiotlb_bounce(phys_addr_t phys, char *dma_addr, size_t size,
+ enum dma_data_direction dir);
+
extern void
*swiotlb_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags);