gpu: nvgpu: add support for FECS VA

- On t186, ucode expects physical address to be
programmed for FECS trace buffer.
- On t194, ucode expects GPU VA to be programmed
for FECS trace buffer. This patch adds extra
support to handle this change for linux native.
- Increase the size of FECS trace buffer (as few
entries were getting dropped due to overflow of
FECS trace buffer.)
- This moves FECS trace buffer handling in global
context buffer.
- This adds extra check for updation of mailbox1
register. (Bug 200417403)

EVLR-2077

Change-Id: I7c3324ce9341976a1375e0afe6c53c424a053723
Signed-off-by: Vaibhav Kachore <vkachore@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1536028
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nirav Patel <nipatel@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.h b/drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.h
index e310a18a..acac14c6 100644
--- a/drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2018, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -39,5 +39,6 @@ int gk20a_gr_max_entries(struct gk20a *g,
 int gk20a_fecs_trace_enable(struct gk20a *g);
 int gk20a_fecs_trace_disable(struct gk20a *g);
 bool gk20a_fecs_trace_is_enabled(struct gk20a *g);
+size_t gk20a_fecs_trace_buffer_size(struct gk20a *g);
 
 #endif /* __FECS_TRACE_GK20A_H */