gpu: kernel support for suspending/resuming SMs

Kernel support for allowing a GPU debugger to suspend and resume
SMs. Invocation of "suspend" on a given channel will suspend all
SMs if the channel is resident, else remove the channel form the
runlist. Similarly, "resume" will either resume all SMs if the
channel was resident, or re-enable the channel in the runlist.

Change-Id: I3b4ae21dc1b91c1059c828ec6db8125f8a0ce194
Signed-off-by: sujeet baranwal <sbaranwal@nvidia.com>
Signed-off-by: Mayank Kaushik <mkaushik@nvidia.com>
Reviewed-on: http://git-master/r/552115
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.h b/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
index 4b1f6de2..72642a41 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
@@ -449,4 +449,11 @@ void gr_gk20a_load_ctxsw_ucode_boot(struct gk20a *g, u64 addr_base,
 
 
 void gr_gk20a_free_tsg_gr_ctx(struct tsg_gk20a *c);
-#endif /* GR_GK20A_H */
+int gr_gk20a_disable_ctxsw(struct gk20a *g);
+int gr_gk20a_enable_ctxsw(struct gk20a *g);
+void gk20a_resume_all_sms(struct gk20a *g);
+void gk20a_suspend_all_sms(struct gk20a *g);
+int gk20a_gr_lock_down_sm(struct gk20a *g,
+                                 u32 gpc, u32 tpc, u32 global_esr_mask);
+bool gk20a_is_channel_ctx_resident(struct channel_gk20a *ch);
+#endif /*__GR_GK20A_H__*/