Merge branch 'perf' into devel

[karo-tx-linux.git] / arch / arm / mm / cache-v4wt.S

diff --git a/arch/arm/mm/cache-v4wt.S b/arch/arm/mm/cache-v4wt.S
index c54fa2cc40e6e2f8ebfa2c60c7849ea94682bd70..45c70312f43bb1db9f49ae9591283d243b072ae8 100644 (file)
--- a/arch/arm/mm/cache-v4wt.S
+++ b/arch/arm/mm/cache-v4wt.S
@@ -117,17 +117,18 @@ ENTRY(v4wt_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(v4wt_flush_kern_dcache_page)
+ENTRY(v4wt_flush_kern_dcache_area)
        mov     r2, #0
        mcr     p15, 0, r2, c7, c5, 0           @ invalidate I cache
-       add     r1, r0, #PAGE_SZ
+       add     r1, r0, r1
        /* fallthrough */
 
 /*
@@ -141,23 +142,12 @@ ENTRY(v4wt_flush_kern_dcache_page)
  *     - start  - virtual start address
  *     - end    - virtual end address
  */
-ENTRY(v4wt_dma_inv_range)
+v4wt_dma_inv_range:
        bic     r0, r0, #CACHE_DLINESIZE - 1
 1:     mcr     p15, 0, r0, c7, c6, 1           @ invalidate D entry
        add     r0, r0, #CACHE_DLINESIZE
        cmp     r0, r1
        blo     1b
-       /* FALLTHROUGH */
-
-/*
- *     dma_clean_range(start, end)
- *
- *     Clean the specified virtual address range.
- *
- *     - start  - virtual start address
- *     - end    - virtual end address
- */
-ENTRY(v4wt_dma_clean_range)
        mov     pc, lr
 
 /*
@@ -171,6 +161,29 @@ ENTRY(v4wt_dma_clean_range)
        .globl  v4wt_dma_flush_range
        .equ    v4wt_dma_flush_range, v4wt_dma_inv_range
 
+/*
+ *     dma_unmap_area(start, size, dir)
+ *     - start - kernel virtual start address
+ *     - size  - size of region
+ *     - dir   - DMA direction
+ */
+ENTRY(v4wt_dma_unmap_area)
+       add     r1, r1, r0
+       teq     r2, #DMA_TO_DEVICE
+       bne     v4wt_dma_inv_range
+       /* FALLTHROUGH */
+
+/*
+ *     dma_map_area(start, size, dir)
+ *     - start - kernel virtual start address
+ *     - size  - size of region
+ *     - dir   - DMA direction
+ */
+ENTRY(v4wt_dma_map_area)
+       mov     pc, lr
+ENDPROC(v4wt_dma_unmap_area)
+ENDPROC(v4wt_dma_map_area)
+
        __INITDATA
 
        .type   v4wt_cache_fns, #object
@@ -180,8 +193,8 @@ ENTRY(v4wt_cache_fns)
        .long   v4wt_flush_user_cache_range
        .long   v4wt_coherent_kern_range
        .long   v4wt_coherent_user_range
-       .long   v4wt_flush_kern_dcache_page
-       .long   v4wt_dma_inv_range
-       .long   v4wt_dma_clean_range
+       .long   v4wt_flush_kern_dcache_area
+       .long   v4wt_dma_map_area
+       .long   v4wt_dma_unmap_area
        .long   v4wt_dma_flush_range
        .size   v4wt_cache_fns, . - v4wt_cache_fns