gemini: rename patches directory to patches-4.4
[openwrt/openwrt.git] / target / linux / gemini / patches-4.4 / 060-cache-fa.diff
1 --- a/arch/arm/mm/cache-fa.S
2 +++ b/arch/arm/mm/cache-fa.S
3 @@ -24,7 +24,8 @@
4 /*
5 * The size of one data cache line.
6 */
7 -#define CACHE_DLINESIZE 16
8 +#define CACHE_DLINESIZE 16
9 +#define CACHE_DLINESHIFT 4
10
11 /*
12 * The total size of the data cache.
13 @@ -169,7 +170,17 @@ ENTRY(fa_flush_kern_dcache_area)
14 * - start - virtual start address
15 * - end - virtual end address
16 */
17 +__flush_whole_dcache:
18 + mcr p15, 0, r0, c7, c14, 0 @ clean/invalidate D cache
19 + mov r0, #0
20 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
21 + mov pc, lr
22 +
23 fa_dma_inv_range:
24 + sub r3, r1, r0 @ calculate total size
25 + cmp r3, #CACHE_DLIMIT @ total size >= limit?
26 + bhs __flush_whole_dcache @ flush whole D cache
27 +
28 tst r0, #CACHE_DLINESIZE - 1
29 bic r0, r0, #CACHE_DLINESIZE - 1
30 mcrne p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry
31 @@ -193,6 +204,10 @@ fa_dma_inv_range:
32 * - end - virtual end address
33 */
34 fa_dma_clean_range:
35 + sub r3, r1, r0 @ calculate total size
36 + cmp r3, #CACHE_DLIMIT @ total size >= limit?
37 + bhs __flush_whole_dcache @ flush whole D cache
38 +
39 bic r0, r0, #CACHE_DLINESIZE - 1
40 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
41 add r0, r0, #CACHE_DLINESIZE