gpu: nvgpu: Per-chip PBDMA signature

PBDMA HW signature depends on the chip.

Change-Id: If57d721d9bb77a090f967930a1aa2037bf4a16fe
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/672922

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
index f50277f3..9dcab250 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
@@ -2154,6 +2154,11 @@ static u32 gk20a_fifo_get_num_fifos(struct gk20a *g)
         return ccsr_channel__size_1_v();
 }
 
+u32 gk20a_fifo_get_pbdma_signature(struct gk20a *g)
+{
+        return pbdma_signature_hw_valid_f() | pbdma_signature_sw_zero_f();
+}
+
 void gk20a_init_fifo(struct gpu_ops *gops)
 {
         gk20a_init_channel(gops);
@@ -2163,4 +2168,5 @@ void gk20a_init_fifo(struct gpu_ops *gops)
         gops->fifo.apply_pb_timeout = gk20a_fifo_apply_pb_timeout;
         gops->fifo.wait_engine_idle = gk20a_fifo_wait_engine_idle;
         gops->fifo.get_num_fifos = gk20a_fifo_get_num_fifos;
+        gops->fifo.get_pbdma_signature = gk20a_fifo_get_pbdma_signature;
 }