gpu: nvgpu: Initialize ctxsw header counters

Initialize following counters in context header
for all legacy chips:
ctxsw_prog_main_image_num_save_ops
ctxsw_prog_main_image_num_restore_ops

This was already present in the code but move to a function
gk20a_gr_init_ctxsw_hdr_data, so that it can be re-used across
chips.

Additionally initialize following preemption related counters
for gp10b onwards in context header:
ctxsw_prog_main_image_num_wfi_save_ops
ctxsw_prog_main_image_num_cta_save_ops
ctxsw_prog_main_image_num_gfxp_save_ops
ctxsw_prog_main_image_num_cilp_save_ops

Bug 1958308

Change-Id: I0e45ec718a8f9ddb951b52c92137051b4f6a8c60
Signed-off-by: seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1562654
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit

3 files changed, 17 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index adc630e6..8ac82428 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -415,6 +415,9 @@ struct gpu_ops {
                                 u32 gpc, u32 tpc, u32 sm);
                 void (*resume_all_sms)(struct gk20a *g);
                 void (*disable_rd_coalesce)(struct gk20a *g);
+                void (*init_ctxsw_hdr_data)(struct gk20a *g,
+                                        struct nvgpu_mem *mem);
+
         } gr;
         struct {
                 void (*init_hw)(struct gk20a *g);
diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 833a3ab9..82c9fa89 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -1821,6 +1821,15 @@ cleanup_pm_buf:
         return ret;
 }
 
+void gk20a_gr_init_ctxsw_hdr_data(struct gk20a *g,
+                                struct nvgpu_mem *mem)
+{
+        nvgpu_mem_wr(g, mem,
+                        ctxsw_prog_main_image_num_save_ops_o(), 0);
+        nvgpu_mem_wr(g, mem,
+                        ctxsw_prog_main_image_num_restore_ops_o(), 0);
+}
+
 /* load saved fresh copy of gloden image into channel gr_ctx */
 int gr_gk20a_load_golden_ctx_image(struct gk20a *g,
                                         struct channel_gk20a *c)
@@ -1860,12 +1869,11 @@ int gr_gk20a_load_golden_ctx_image(struct gk20a *g,
                 nvgpu_mem_wr_n(g, mem, 0,
                         gr->ctx_vars.local_golden_image,
                         gr->ctx_vars.golden_image_size);
-                nvgpu_mem_wr(g, mem,
-                        ctxsw_prog_main_image_num_save_ops_o(), 0);
-                nvgpu_mem_wr(g, mem,
-                        ctxsw_prog_main_image_num_restore_ops_o(), 0);
         }
 
+        if (g->ops.gr.init_ctxsw_hdr_data)
+                g->ops.gr.init_ctxsw_hdr_data(g, mem);
+
         if (g->ops.gr.enable_cde_in_fecs && c->cde)
                 g->ops.gr.enable_cde_in_fecs(g, mem);
 
diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.h b/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
index c69d9df9..2d2bd15e 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
@@ -737,6 +737,8 @@ void gk20a_gr_get_esr_sm_sel(struct gk20a *g, u32 gpc, u32 tpc,
 void gk20a_gr_init_ovr_sm_dsm_perf(void);
 void gk20a_gr_get_ovr_perf_regs(struct gk20a *g, u32 *num_ovr_perf_regs,
                                                u32 **ovr_perf_regs);
+void gk20a_gr_init_ctxsw_hdr_data(struct gk20a *g,
+                                        struct nvgpu_mem *mem);
 
 static inline const char *gr_gk20a_graphics_preempt_mode_name(u32 graphics_preempt_mode)
 {