gpu: nvgpu: Dump offending push buffer fragment

When outputting debug dump, print the contents of current push buffer
segment.

Also changes the debug dump to use pr_cont when applicable, and dumps
state before recovering in case channel was not loaded to an engine.

Bug 1498688

Change-Id: I5ca12f64bae8f12333d82350278c700645d5007e
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/422198

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
index cba1f0fd..3c0611e6 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
@@ -1180,13 +1180,15 @@ void gk20a_fifo_recover_ch(struct gk20a *g, u32 hw_chid, bool verbose)
                 struct channel_gk20a *ch =
                         g->fifo.channel + hw_chid;
 
+                if (verbose)
+                        gk20a_debug_dump(g->dev);
+
                 gk20a_channel_abort(ch);
                 for (i = 0; i < g->fifo.max_runlists; i++)
                         gk20a_fifo_update_runlist(g, i,
                                         hw_chid, false, false);
 
-                if (gk20a_fifo_set_ctx_mmu_error(g, ch))
-                        gk20a_debug_dump(g->dev);
+                gk20a_fifo_set_ctx_mmu_error(g, ch);
         }
 }