gpu: nvgpu: add usermode_base HAL

Add a HAL function pointer to fifo to for reading the usermode_cfg0
register and implement it for gv11b.

Bug 200145225
Bug 200541476

Change-Id: I5f77b15d3b502d9370b1f14129314eaf51a9d7d1
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1811839
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
(cherry picked from commit fddb2969240652e1a56089b249684b55430d45c5
in dev-main)
Reviewed-on: https://git-master.nvidia.com/r/2170004
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/fifo_gv11b.c b/drivers/gpu/nvgpu/gv11b/fifo_gv11b.c
index 36cb5306..be4d56a8 100644
--- a/drivers/gpu/nvgpu/gv11b/fifo_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/fifo_gv11b.c
@@ -220,6 +220,10 @@ int channel_gv11b_setup_ramfc(struct channel_gk20a *c,
         return channel_gp10b_commit_userd(c);
 }
 
+u64 gv11b_fifo_usermode_base(struct gk20a *g)
+{
+        return usermode_cfg0_r();
+}
 
 void gv11b_ring_channel_doorbell(struct channel_gk20a *c)
 {