gpu: nvgpu: support gk20a virtualization

The nvgpu driver now supports using the Tegra graphics virtualization
interfaces to support gk20a in a virtualized environment.

Bug 1509608

Change-Id: I6ede15ee7bf0b0ad8a13e8eb5f557c3516ead676
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/440122
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index 2ea3eccb..37ca8244 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -144,6 +144,10 @@ struct channel_gk20a {
         void *error_notifier_va;
 
         struct gk20a_channel_sync *sync;
+
+#ifdef CONFIG_TEGRA_GR_VIRTUALIZATION
+        u64 virt_ctx;
+#endif
 };
 
 static inline bool gk20a_channel_as_bound(struct channel_gk20a *ch)
@@ -193,4 +197,11 @@ int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
 int gk20a_alloc_channel_gpfifo(struct channel_gk20a *c,
                                struct nvhost_alloc_gpfifo_args *args);
 
+void channel_gk20a_unbind(struct channel_gk20a *ch_gk20a);
+void channel_gk20a_disable(struct channel_gk20a *ch);
+int channel_gk20a_alloc_inst(struct gk20a *g, struct channel_gk20a *ch);
+void channel_gk20a_free_inst(struct gk20a *g, struct channel_gk20a *ch);
+int channel_gk20a_setup_ramfc(struct channel_gk20a *c,
+                        u64 gpfifo_base, u32 gpfifo_entries);
+
 #endif /*__CHANNEL_GK20A_H__*/