gpu: nvgpu: use vpr resize API

This patch adds nvgpu API in linux and qnx to query vpr resize.
The new API nvgpu_is_vpr_resize_enabled() is used in
nvgpu_submit_channel_gpfifo().
Previously, if non-deterministic channel has timeout disabled and
GPU cannot railgate on some platform, then channel doesn't power ref
count and results in video freeze. This requires non-determinstic
channel job tracking to be enabled if vpr resize is supported or if GPU
can railgate.

Bug 200532122

Change-Id: Icfbff6253762b195b2f5955749343974b1a7a269
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2167082
Reviewed-on: https://git-master.nvidia.com/r/2180581
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/common/fifo/submit.c b/drivers/gpu/nvgpu/common/fifo/submit.c
index 4effc663..d518fbfb 100644
--- a/drivers/gpu/nvgpu/common/fifo/submit.c
+++ b/drivers/gpu/nvgpu/common/fifo/submit.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2018-2019, 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"),
@@ -26,6 +26,7 @@
 #include <nvgpu/os_sched.h>
 #include <nvgpu/utils.h>
 #include <nvgpu/channel_sync.h>
+#include <nvgpu/vpr.h>
 
 #include <nvgpu/hw/gk20a/hw_pbdma_gk20a.h>
 
@@ -387,6 +388,7 @@ static int nvgpu_submit_channel_gpfifo(struct channel_gk20a *c,
          *  - pre- or post-fence functionality
          *  - channel wdt
          *  - GPU rail-gating with non-deterministic channels
+         *  - VPR resize enabled with non-deterministic channels
          *  - buffer refcounting
          *
          * If none of the conditions are met, then job tracking is not
@@ -396,8 +398,9 @@ static int nvgpu_submit_channel_gpfifo(struct channel_gk20a *c,
         need_job_tracking = (flags & NVGPU_SUBMIT_FLAGS_FENCE_WAIT) ||
                         (flags & NVGPU_SUBMIT_FLAGS_FENCE_GET) ||
                         c->timeout.enabled ||
-                        (nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE)
-                         && !c->deterministic) ||
+                        ((nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE) ||
+                                nvgpu_is_vpr_resize_enabled()) &&
+                                !c->deterministic) ||
                         !skip_buffer_refcounting;
 
         if (need_job_tracking) {