summaryrefslogtreecommitdiffstats
path: root/arch/arm/mm/proc-xscale.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mm/proc-xscale.S')
-rw-r--r--arch/arm/mm/proc-xscale.S49
1 files changed, 43 insertions, 6 deletions
diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
index 93df472..63037e2 100644
--- a/arch/arm/mm/proc-xscale.S
+++ b/arch/arm/mm/proc-xscale.S
@@ -315,7 +315,7 @@ ENTRY(xscale_flush_kern_dcache_area)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(xscale_dma_inv_range)
+xscale_dma_inv_range:
tst r0, #CACHELINESIZE - 1
bic r0, r0, #CACHELINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
@@ -336,7 +336,7 @@ ENTRY(xscale_dma_inv_range)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(xscale_dma_clean_range)
+xscale_dma_clean_range:
bic r0, r0, #CACHELINESIZE - 1
1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHELINESIZE
@@ -363,6 +363,43 @@ ENTRY(xscale_dma_flush_range)
mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
mov pc, lr
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(xscale_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq xscale_dma_clean_range
+ bcs xscale_dma_inv_range
+ b xscale_dma_flush_range
+ENDPROC(xscale_dma_map_area)
+
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(xscale_dma_a0_map_area)
+ add r1, r1, r0
+ teq r2, #DMA_TO_DEVICE
+ beq xscale_dma_clean_range
+ b xscale_dma_flush_range
+ENDPROC(xscsale_dma_a0_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(xscale_dma_unmap_area)
+ mov pc, lr
+ENDPROC(xscale_dma_unmap_area)
+
ENTRY(xscale_cache_fns)
.long xscale_flush_kern_cache_all
.long xscale_flush_user_cache_all
@@ -370,8 +407,8 @@ ENTRY(xscale_cache_fns)
.long xscale_coherent_kern_range
.long xscale_coherent_user_range
.long xscale_flush_kern_dcache_area
- .long xscale_dma_inv_range
- .long xscale_dma_clean_range
+ .long xscale_dma_map_area
+ .long xscale_dma_unmap_area
.long xscale_dma_flush_range
/*
@@ -394,8 +431,8 @@ ENTRY(xscale_80200_A0_A1_cache_fns)
.long xscale_coherent_kern_range
.long xscale_coherent_user_range
.long xscale_flush_kern_dcache_area
- .long xscale_dma_flush_range
- .long xscale_dma_clean_range
+ .long xscale_dma_a0_map_area
+ .long xscale_dma_unmap_area
.long xscale_dma_flush_range
ENTRY(cpu_xscale_dcache_clean_area)
OpenPOWER on IntegriCloud