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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-11-26 16:19:58 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-02-15 15:22:20 +0000
commita9c9147eb9b1dba0ce567a41897c7773b4d1b0bc (patch)
tree178938c909f4717c2e599d6f3de954d7ee8a7f21 /arch/arm/mm/proc-arm925.S
parent93f1d629e22b08642eb713ad96ac2cb9ade0641c (diff)
ARM: dma-mapping: provide per-cpu type map/unmap functions
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-By: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'arch/arm/mm/proc-arm925.S')
-rw-r--r--arch/arm/mm/proc-arm925.S26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S
index 8deb5bde58e..7c01c5d1108 100644
--- a/arch/arm/mm/proc-arm925.S
+++ b/arch/arm/mm/proc-arm925.S
@@ -341,6 +341,30 @@ ENTRY(arm925_dma_flush_range)
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(arm925_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq arm925_dma_clean_range
+ bcs arm925_dma_inv_range
+ b arm925_dma_flush_range
+ENDPROC(arm925_dma_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(arm925_dma_unmap_area)
+ mov pc, lr
+ENDPROC(arm925_dma_unmap_area)
+
ENTRY(arm925_cache_fns)
.long arm925_flush_kern_cache_all
.long arm925_flush_user_cache_all
@@ -348,6 +372,8 @@ ENTRY(arm925_cache_fns)
.long arm925_coherent_kern_range
.long arm925_coherent_user_range
.long arm925_flush_kern_dcache_area
+ .long arm925_dma_map_area
+ .long arm925_dma_unmap_area
.long arm925_dma_inv_range
.long arm925_dma_clean_range
.long arm925_dma_flush_range