gpu: nvgpu: gv100: fb hal to init and enable nvlink

Add the following hals:
(1) init_nvlink to configure nvlink(s) for sysmem in HSHUB
(2) enable_nvlink to switch from PCIe sysmem to nvlink sysmem,
    and setup atomics.

Change-Id: I73d2370aaf8e0530158a1091d9efef4a8cf2aac5
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1648044
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
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 40656edd..ac3364b0 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -481,6 +481,8 @@ struct gpu_ops {
                 void (*tlb_invalidate)(struct gk20a *g, struct nvgpu_mem *pdb);
                 void (*hub_isr)(struct gk20a *g);
                 int (*mem_unlock)(struct gk20a *g);
+                int (*init_nvlink)(struct gk20a *g);
+                int (*enable_nvlink)(struct gk20a *g);
         } fb;
         struct {
                 void (*slcg_bus_load_gating_prod)(struct gk20a *g, bool prod);