gpu: nvgpu: vgpu: perfbuffer support

Add vgpu support for ModeE perfbuffers

- VM allocation is handled by the kernel, with final mapping
  handled by the RM server
- Enabling/disabling the perfbuffer is handled by the RM server

Bug 1880196
JIRA EVLR-1074

Change-Id: Ifbeb5ede6b07e2e112b930c602c22b66a58ac920
Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com>
Reviewed-on: https://git-master/r/1506747
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index acfb6144..8f291f92 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -869,6 +869,8 @@ struct gpu_ops {
                 void (*release_profiler_reservation)(
                                 struct dbg_session_gk20a *dbg_s,
                                 struct dbg_profiler_object_data *prof_obj);
+                int (*perfbuffer_enable)(struct gk20a *g, u64 offset, u32 size);
+                int (*perfbuffer_disable)(struct gk20a *g);
         } dbg_session_ops;
         struct {
                 void (*get_program_numbers)(struct gk20a *g,