gpu: nvgpu: Add wrapper over atomic_t and atomic64_t

- added wrapper structs nvgpu_atomic_t and nvgpu_atomic64_t over
  atomic_t and atomic64_t
- added nvgpu_atomic_* and nvgpu_atomic64_* APIs to access the above
  wrappers.

JIRA NVGPU-121

Change-Id: I61667bb0a84c2fc475365abb79bffb42b8b4786a
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1533044
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 94 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/atomic.h b/drivers/gpu/nvgpu/include/nvgpu/atomic.h
index 700e29fe..c7a5fcd9 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/atomic.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/atomic.h
@@ -9,12 +9,102 @@
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #ifndef __NVGPU_ATOMIC_H__
 #define __NVGPU_ATOMIC_H__
 
-#ifdef __KERNEL__
-#include <linux/atomic.h>
-#endif
+#include <nvgpu/linux/atomic.h>
+
+#define NVGPU_ATOMIC_INIT(i)    __nvgpu_atomic_init(i)
+#define NVGPU_ATOMIC64_INIT(i)  __nvgpu_atomic64_init(i)
+
+static inline void nvgpu_atomic_set(nvgpu_atomic_t *v, int i)
+{
+        __nvgpu_atomic_set(v, i);
+}
+static inline int nvgpu_atomic_read(nvgpu_atomic_t *v)
+{
+        return __nvgpu_atomic_read(v);
+}
+static inline void nvgpu_atomic_inc(nvgpu_atomic_t *v)
+{
+        __nvgpu_atomic_inc(v);
+}
+static inline int nvgpu_atomic_inc_return(nvgpu_atomic_t *v)
+{
+        return __nvgpu_atomic_inc_return(v);
+}
+static inline void nvgpu_atomic_dec(nvgpu_atomic_t *v)
+{
+         __nvgpu_atomic_dec(v);
+}
+static inline int nvgpu_atomic_dec_return(nvgpu_atomic_t *v)
+{
+        return __nvgpu_atomic_dec_return(v);
+}
+static inline int nvgpu_atomic_cmpxchg(nvgpu_atomic_t *v, int old, int new)
+{
+        return __nvgpu_atomic_cmpxchg(v, old, new);
+}
+static inline int nvgpu_atomic_xchg(nvgpu_atomic_t *v, int new)
+{
+        return __nvgpu_atomic_xchg(v, new);
+}
+static inline bool nvgpu_atomic_inc_and_test(nvgpu_atomic_t *v)
+{
+        return __nvgpu_atomic_inc_and_test(v);
+}
+static inline bool nvgpu_atomic_dec_and_test(nvgpu_atomic_t *v)
+{
+        return __nvgpu_atomic_dec_and_test(v);
+}
+static inline int nvgpu_atomic_add_return(int i, nvgpu_atomic_t *v)
+{
+        return __nvgpu_atomic_add_return(i, v);
+}
+static inline void nvgpu_atomic64_set(nvgpu_atomic64_t *v, long i)
+{
+        return  __nvgpu_atomic64_set(v, i);
+}
+static inline long nvgpu_atomic64_read(nvgpu_atomic64_t *v)
+{
+        return  __nvgpu_atomic64_read(v);
+}
+static inline void nvgpu_atomic64_add(long x, nvgpu_atomic64_t *v)
+{
+        __nvgpu_atomic64_add(x, v);
+}
+static inline void nvgpu_atomic64_inc(nvgpu_atomic64_t *v)
+{
+        __nvgpu_atomic64_inc(v);
+}
+static inline long nvgpu_atomic64_inc_return(nvgpu_atomic64_t *v)
+{
+        return __nvgpu_atomic64_inc_return(v);
+}
+static inline void nvgpu_atomic64_dec(nvgpu_atomic64_t *v)
+{
+        __nvgpu_atomic64_dec(v);
+}
+static inline void nvgpu_atomic64_dec_return(nvgpu_atomic64_t *v)
+{
+        __nvgpu_atomic64_dec_return(v);
+}
+static inline long nvgpu_atomic64_cmpxchg(nvgpu_atomic64_t *v, long old,
+                                        long new)
+{
+        return __nvgpu_atomic64_cmpxchg(v, old, new);
+}
+static inline void nvgpu_atomic64_sub(long x, nvgpu_atomic64_t *v)
+{
+        __nvgpu_atomic64_sub(x, v);
+}
+static inline long nvgpu_atomic64_sub_return(long x, nvgpu_atomic64_t *v)
+{
+        return __nvgpu_atomic64_sub_return(x, v);
+}
 
-#endif
+#endif /* __NVGPU_ATOMIC_H__ */