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, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index 60437e66..36697e02 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -159,6 +159,8 @@ void gk20a_set_error_notifier(struct channel_gk20a *ch, __u32 error);
 void gk20a_channel_semaphore_wakeup(struct gk20a *g);
 int gk20a_channel_alloc_priv_cmdbuf(struct channel_gk20a *c, u32 size,
                              struct priv_cmd_entry **entry);
+int gk20a_find_from_priv_cmdbuf(struct channel_gk20a *c,
+                                u64 addr, u32 **cpu_va);
 
 int gk20a_channel_suspend(struct gk20a *g);
 int gk20a_channel_resume(struct gk20a *g);