1 files changed, 50 insertions, 12 deletions

diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
index f056c283682d..63037e2162f2 100644
--- a/arch/arm/mm/proc-xscale.S
+++ b/arch/arm/mm/proc-xscale.S
@@ -284,15 +284,16 @@ ENTRY(xscale_coherent_user_range)
         mov     pc, lr
 
 /*
- *      flush_kern_dcache_page(void *page)
+ *      flush_kern_dcache_area(void *addr, size_t size)
  *
  *      Ensure no D cache aliasing occurs, either with itself or
  *      the I cache
  *
- *      - addr  - page aligned address
+ *      - addr  - kernel address
+ *      - size  - region size
  */
-ENTRY(xscale_flush_kern_dcache_page)
-        add     r1, r0, #PAGE_SZ
+ENTRY(xscale_flush_kern_dcache_area)
+        add     r1, r0, r1
 1:      mcr     p15, 0, r0, c7, c10, 1          @ clean D entry
         mcr     p15, 0, r0, c7, c6, 1           @ invalidate D entry
         add     r0, r0, #CACHELINESIZE
@@ -314,7 +315,7 @@ ENTRY(xscale_flush_kern_dcache_page)
  *      - 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
@@ -335,7 +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
@@ -362,15 +363,52 @@ 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
         .long   xscale_flush_user_cache_range
         .long   xscale_coherent_kern_range
         .long   xscale_coherent_user_range
-        .long   xscale_flush_kern_dcache_page
-        .long   xscale_dma_inv_range
-        .long   xscale_dma_clean_range
+        .long   xscale_flush_kern_dcache_area
+        .long   xscale_dma_map_area
+        .long   xscale_dma_unmap_area
         .long   xscale_dma_flush_range
 
 /*
@@ -392,9 +430,9 @@ ENTRY(xscale_80200_A0_A1_cache_fns)
         .long   xscale_flush_user_cache_range
         .long   xscale_coherent_kern_range
         .long   xscale_coherent_user_range
-        .long   xscale_flush_kern_dcache_page
-        .long   xscale_dma_flush_range
-        .long   xscale_dma_clean_range
+        .long   xscale_flush_kern_dcache_area
+        .long   xscale_dma_a0_map_area
+        .long   xscale_dma_unmap_area
         .long   xscale_dma_flush_range
 
 ENTRY(cpu_xscale_dcache_clean_area)