As for today slc_entire_op with OP_FLUSH command flush and invalidate
SLC entry instead of flush only. Fix that.
NOTE:
As for today we use slc_entire_op only with OP_FLUSH_N_INV command,
so it is kinda preventiv fix.
Signed-off-by: Eugeniy Paltsev <[email protected]>
---
V1 patch is for u-boot (with u-boot AUX registers name), mistakenly sent it
to linux.
arch/arc/mm/cache.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c
index 55c3de2..5cb647c 100644
--- a/arch/arc/mm/cache.c
+++ b/arch/arc/mm/cache.c
@@ -787,7 +787,10 @@ noinline static void slc_entire_op(const int op)
write_aux_reg(r, ctrl);
- write_aux_reg(ARC_REG_SLC_INVALIDATE, 1);
+ if (op & OP_INV) /* Inv or flush-n-inv use same cmd reg */
+ write_aux_reg(ARC_REG_SLC_INVALIDATE, 0x1);
+ else
+ write_aux_reg(ARC_REG_SLC_FLUSH, 0x1);
/* Make sure "busy" bit reports correct stataus, see STAR 9001165532 */
read_aux_reg(r);
--
2.9.3