gemini: rename patches directory to patches-4.4

[openwrt/staging/yousong.git] / target / linux / gemini / patches-4.4 / 060-cache-fa.diff

diff --git a/target/linux/gemini/patches-4.4/060-cache-fa.diff b/target/linux/gemini/patches-4.4/060-cache-fa.diff
new file mode 100644 (file)
index 0000000..fc74c0a
--- /dev/null
+++ b/target/linux/gemini/patches-4.4/060-cache-fa.diff
@@ -0,0 +1,41 @@
+--- a/arch/arm/mm/cache-fa.S
++++ b/arch/arm/mm/cache-fa.S
+@@ -24,7 +24,8 @@
+ /*
+  * The size of one data cache line.
+  */
+-#define CACHE_DLINESIZE       16
++#define CACHE_DLINESIZE               16
++#define CACHE_DLINESHIFT      4
+ 
+ /*
+  * The total size of the data cache.
+@@ -169,7 +170,17 @@ ENTRY(fa_flush_kern_dcache_area)
+  *    - start  - virtual start address
+  *    - end    - virtual end address
+  */
++__flush_whole_dcache:
++      mcr     p15, 0, r0, c7, c14, 0          @ clean/invalidate D cache
++      mov     r0, #0
++      mcr     p15, 0, r0, c7, c10, 4          @ drain write buffer
++      mov     pc, lr
++
+ fa_dma_inv_range:
++      sub     r3, r1, r0                      @ calculate total size
++      cmp     r3, #CACHE_DLIMIT               @ total size >= limit?
++      bhs     __flush_whole_dcache            @ flush whole D cache
++
+       tst     r0, #CACHE_DLINESIZE - 1
+       bic     r0, r0, #CACHE_DLINESIZE - 1
+       mcrne   p15, 0, r0, c7, c14, 1          @ clean & invalidate D entry
+@@ -193,6 +204,10 @@ fa_dma_inv_range:
+  *    - end    - virtual end address
+  */
+ fa_dma_clean_range:
++      sub     r3, r1, r0                      @ calculate total size
++      cmp     r3, #CACHE_DLIMIT               @ total size >= limit?
++      bhs     __flush_whole_dcache            @ flush whole D cache
++
+       bic     r0, r0, #CACHE_DLINESIZE - 1
+ 1:    mcr     p15, 0, r0, c7, c10, 1          @ clean D entry
+       add     r0, r0, #CACHE_DLINESIZE