gpu: nvgpu: On FECS error, dump ARB status

On FECS arbiter timeout, dump ARB status.

Change-Id: I4f8c4d38c99e35ce751172a8695e950f0ce594c8
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/417753

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index df85d852..fc1da1fe 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -2004,8 +2004,11 @@ static void gr_gk20a_load_falcon_bind_instblk(struct gk20a *g)
                 udelay(2);
                 retries--;
         }
-        if (!retries)
-                gk20a_err(dev_from_gk20a(g), "arbiter idle timeout");
+        if (!retries) {
+                gk20a_err(dev_from_gk20a(g),
+                          "arbiter idle timeout, status: %08x",
+                          gk20a_readl(g, gr_fecs_ctxsw_status_1_r()));
+        }
 
         gk20a_writel(g, gr_fecs_arb_ctx_adr_r(), 0x0);