gpu: nvgpu: remove usage of nvgpu_fence

Remove the usage of nvgpu_fence splattered across nvgpu,
and replace with a struct defined in common code.
The usage is still inside Linux, but this helps the
subsequent unification efforts, e.g. to unify the submit
path.

VQRM-3465

Change-Id: Ic3737450123dfc5e1c40ca5b6b8d8f6b3070aa0d
Signed-off-by: Sourab Gupta <sourabg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1691977
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index cd5bf7d7..ab1c4a6f 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -47,6 +47,18 @@ struct fifo_profile_gk20a;
 #define NVGPU_GPFIFO_FLAGS_REPLAYABLE_FAULTS_ENABLE     (1 << 2)
 #define NVGPU_GPFIFO_FLAGS_USERMODE_SUPPORT             (1 << 3)
 
+/*
+ * The binary format of 'struct nvgpu_channel_fence' introduced here
+ * should match that of 'struct nvgpu_fence' defined in uapi header, since
+ * this struct is intended to be a mirror copy of the uapi struct. This is
+ * not a hard requirement though because of nvgpu_get_fence_args conversion
+ * function.
+ */
+struct nvgpu_channel_fence {
+        u32 id;
+        u32 value;
+};
+
 struct nvgpu_gpfifo_args {
         u32 num_entries;
         u32 num_inflight_jobs;