gpu: nvgpu: function to combine two u32 into u64

New function to combine two u32 values into one u64.
This is introduced for t19x mmu fault handling.

JIRA GPUT19X-7

Change-Id: I4cd1e5764c07f43fe96e487acfa781b6ebb7c57f
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: http://git-master/r/1315951
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index d781034c..88acc3ec 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -1366,6 +1366,11 @@ static inline u32 u64_lo32(u64 n)
         return (u32)(n & ~(u32)0);
 }
 
+static inline u64 hi32_lo32_to_u64(u32 hi, u32 lo)
+{
+        return  (((u64)hi) << 32) | (u64)lo;
+}
+
 static inline u32 set_field(u32 val, u32 mask, u32 field)
 {
         return ((val & ~mask) | field);