gpu: nvgpu: enhance pbus error reporting

-Dump timeout save0 and save1 even if they could
 be unreliable when fecs_tgt in set in save0 . This
 is good to have for debug purposes.
-Add priv_ring hal for decode_error_code
-Decode fecs error code for supported error types

Bug 1998067

Change-Id: I60cb6902d099df4a7df45fa624e44d9e0d46360f
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1683014
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/priv_ring_gp10b.c b/drivers/gpu/nvgpu/gp10b/priv_ring_gp10b.c
index 0fac76f2..12cd2a84 100644
--- a/drivers/gpu/nvgpu/gp10b/priv_ring_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/priv_ring_gp10b.c
@@ -64,7 +64,7 @@ static const char *const error_type_badf5xyy[] = {
         "pri route error"
 };
 
-static void gp10b_priv_ring_decode_error_code(struct gk20a *g,
+void gp10b_priv_ring_decode_error_code(struct gk20a *g,
                         u32 error_code)
 {
         u32 error_type, error_type_index;
@@ -141,7 +141,8 @@ void gp10b_priv_ring_isr(struct gk20a *g)
                         pri_ringstation_sys_priv_error_info_subid_v(error_info),
                         pri_ringstation_sys_priv_error_info_priv_level_v(error_info),
                         error_code);
-                gp10b_priv_ring_decode_error_code(g, error_code);
+                if (g->ops.priv_ring.decode_error_code)
+                        g->ops.priv_ring.decode_error_code(g, error_code);
         }
 
         if (status1) {
@@ -166,7 +167,9 @@ void gp10b_priv_ring_isr(struct gk20a *g)
                                         pri_ringstation_gpc_gpc0_priv_error_info_priv_level_v(error_info),
                                         error_code);
 
-                                gp10b_priv_ring_decode_error_code(g, error_code);
+                                if (g->ops.priv_ring.decode_error_code)
+                                        g->ops.priv_ring.decode_error_code(g,
+                                                                error_code);
 
                                 status1 = status1 & (~(BIT(gpc)));
                                 if (!status1)