ARM: dma-mapping: provide per-cpu type map/unmap functions

[deliverable/linux.git] / arch / arm / mm / proc-arm1020.S

diff --git a/arch/arm/mm/proc-arm1020.S b/arch/arm/mm/proc-arm1020.S
index d9fb4b98c49ff8866a1d36288d431ce364ad1180..c85f5eb426347f1bb5ebe65fe564d427e0784f25 100644 (file)
--- a/arch/arm/mm/proc-arm1020.S
+++ b/arch/arm/mm/proc-arm1020.S
@@ -231,17 +231,18 @@ ENTRY(arm1020_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
  *
- *     - page  - page aligned address
+ *     - addr  - kernel address
+ *     - size  - region size
  */
-ENTRY(arm1020_flush_kern_dcache_page)
+ENTRY(arm1020_flush_kern_dcache_area)
        mov     ip, #0
 #ifndef CONFIG_CPU_DCACHE_DISABLE
-       add     r1, r0, #PAGE_SZ
+       add     r1, r0, r1
 1:     mcr     p15, 0, r0, c7, c14, 1          @ clean+invalidate D entry
        mcr     p15, 0, ip, c7, c10, 4          @ drain WB
        add     r0, r0, #CACHE_DLINESIZE
@@ -329,13 +330,39 @@ ENTRY(arm1020_dma_flush_range)
        mcr     p15, 0, ip, 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(arm1020_dma_map_area)
+       add     r1, r1, r0
+       cmp     r2, #DMA_TO_DEVICE
+       beq     arm1020_dma_clean_range
+       bcs     arm1020_dma_inv_range
+       b       arm1020_dma_flush_range
+ENDPROC(arm1020_dma_map_area)
+
+/*
+ *     dma_unmap_area(start, size, dir)
+ *     - start - kernel virtual start address
+ *     - size  - size of region
+ *     - dir   - DMA direction
+ */
+ENTRY(arm1020_dma_unmap_area)
+       mov     pc, lr
+ENDPROC(arm1020_dma_unmap_area)
+
 ENTRY(arm1020_cache_fns)
        .long   arm1020_flush_kern_cache_all
        .long   arm1020_flush_user_cache_all
        .long   arm1020_flush_user_cache_range
        .long   arm1020_coherent_kern_range
        .long   arm1020_coherent_user_range
-       .long   arm1020_flush_kern_dcache_page
+       .long   arm1020_flush_kern_dcache_area
+       .long   arm1020_dma_map_area
+       .long   arm1020_dma_unmap_area
        .long   arm1020_dma_inv_range
        .long   arm1020_dma_clean_range
        .long   arm1020_dma_flush_range