gpu: nvgpu: vgpu: debugger interface fixes

To run CUDA apps, the following minimal changes have been
made:
- power-gating is disabled for vgpu
- regop rd/wr returns -ENOSYS

Tools (debugger/profiler) support is known to not work and
not needed at this time.

Bug 200043227

Change-Id: I923caad78450e72d310fb9290cf2849ed5460ad5
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/592878
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 7b0db427..419b8675 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -1299,7 +1299,7 @@ static int gk20a_probe(struct platform_device *dev)
 
         platform_set_drvdata(dev, platform);
 
-        if (platform->virtual_dev)
+        if (gk20a_gpu_is_virtual(dev))
                 return vgpu_probe(dev);
 
         gk20a = kzalloc(sizeof(struct gk20a), GFP_KERNEL);
@@ -1449,7 +1449,7 @@ static int __exit gk20a_remove(struct platform_device *dev)
 
         gk20a_dbg_fn("");
 
-        if (platform->virtual_dev)
+        if (gk20a_gpu_is_virtual(dev))
                 return vgpu_remove(dev);
 
         if (platform->has_cde)
@@ -1527,7 +1527,9 @@ int gk20a_busy(struct platform_device *pdev)
 {
         int ret = 0;
         struct gk20a *g = get_gk20a(pdev);
+#ifdef CONFIG_PM_RUNTIME
         struct gk20a_platform *platform = gk20a_get_platform(pdev);
+#endif
 
         down_read(&g->busy_lock);
 
@@ -1549,7 +1551,7 @@ int gk20a_busy(struct platform_device *pdev)
         }
 #else
         if (!g->power_on) {
-                ret = platform->virtual_dev ?
+                ret = gk20a_gpu_is_virtual(pdev) ?
                         vgpu_pm_finalize_poweron(&pdev->dev)
                         : gk20a_pm_finalize_poweron(&pdev->dev);
                 if (ret)