gpu: nvgpu: Inject function address from nvgpu

This patch inserts the function address of
gk20a_debug_dump_device into host data struct once
the nvgpu module loads and removes it during unload.

Bug 1476801

Change-Id: If49262208325b2aa0807705c26086e6d7c81632c
Signed-off-by: Yogesh Bhosale <ybhosale@nvidia.com>
Reviewed-on: http://git-master/r/779397
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User

2 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 5caef6fe..79240800 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -863,4 +863,6 @@ void gk20a_pbus_isr(struct gk20a *g);
 int gk20a_user_init(struct platform_device *dev);
 void gk20a_user_deinit(struct platform_device *dev);
 
+extern void gk20a_debug_dump_device(struct platform_device *pdev);
+
 #endif /* GK20A_H */
diff --git a/drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c b/drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c
index 5e07ac55..f8e1e3b7 100644
--- a/drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c
+++ b/drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c
@@ -747,6 +747,10 @@ static int gk20a_tegra_probe(struct platform_device *dev)
 
         platform->g->host1x_dev = host1x_pdev;
 
+        if (platform->g->host1x_dev)
+                nvhost_register_dump_device(platform->g->host1x_dev,
+                                        gk20a_debug_dump_device);
+
         /* WAR for bug 1547668: Disable railgating and scaling irrespective of
          * platform data if the rework has not been made. */
 
@@ -776,6 +780,11 @@ static int gk20a_tegra_late_probe(struct platform_device *dev)
 
 static int gk20a_tegra_remove(struct platform_device *dev)
 {
+        struct gk20a_platform *platform = gk20a_get_platform(dev);
+
+        if (platform->g->host1x_dev)
+                nvhost_unregister_dump_device(platform->g->host1x_dev);
+
         /* remove gk20a power subdomain from host1x */
         nvhost_unregister_client_domain(dev_to_genpd(&dev->dev));