gpu: nvgpu: Add preemption mode support for gp10x

Added preemption mode (WFI, GFXP, CTA and CILP) support for gp10x
family gr class (PASCAL_B and PASCAL_COMPUTE_B).

Bug 200221149

Change-Id: Ia8b781c5baedba660db5997f190a0b363286ed7f
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Reviewed-on: http://git-master/r/1193209
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

1 files changed, 18 insertions, 6 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
index 374242bf..ee73fed1 100644
--- a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
@@ -992,9 +992,15 @@ static int gr_gp10b_alloc_gr_ctx(struct gk20a *g,
                 compute_preempt_mode = NVGPU_COMPUTE_PREEMPTION_MODE_CILP;
 
         if (graphics_preempt_mode || compute_preempt_mode) {
-                err = gr_gp10b_set_ctxsw_preemption_mode(g, *gr_ctx, vm,
+                if (g->ops.gr.set_ctxsw_preemption_mode) {
+                        err = g->ops.gr.set_ctxsw_preemption_mode(g, *gr_ctx, vm,
                             class, graphics_preempt_mode, compute_preempt_mode);
-                if (err)
+                        if (err) {
+                                gk20a_err(dev_from_gk20a(g),
+                                                "set_ctxsw_preemption_mode failed");
+                                goto fail_free_gk20a_ctx;
+                        }
+                } else
                         goto fail_free_gk20a_ctx;
         }
 
@@ -2067,10 +2073,15 @@ static int gr_gp10b_set_preemption_mode(struct channel_gk20a *ch,
                 vm = ch->vm;
         }
 
-        err = gr_gp10b_set_ctxsw_preemption_mode(g, gr_ctx, vm, class,
-                                        graphics_preempt_mode, compute_preempt_mode);
-        if (err)
-                return err;
+        if (g->ops.gr.set_ctxsw_preemption_mode) {
+                err = g->ops.gr.set_ctxsw_preemption_mode(g, gr_ctx, vm, class,
+                                                graphics_preempt_mode, compute_preempt_mode);
+                if (err) {
+                        gk20a_err(dev_from_gk20a(g),
+                                        "set_ctxsw_preemption_mode failed");
+                        return err;
+                }
+        }
 
         if (gk20a_mem_begin(g, mem))
                 return -ENOMEM;
@@ -2225,6 +2236,7 @@ void gp10b_init_gr(struct gpu_ops *gops)
         gops->gr.get_lrf_tex_ltc_dram_override = get_ecc_override_val;
         gops->gr.suspend_contexts = gr_gp10b_suspend_contexts;
         gops->gr.set_preemption_mode = gr_gp10b_set_preemption_mode;
+        gops->gr.set_ctxsw_preemption_mode = gr_gp10b_set_ctxsw_preemption_mode;
         gops->gr.get_preemption_mode_flags = gr_gp10b_get_preemption_mode_flags;
         gops->gr.fuse_override = gp10b_gr_fuse_override;
         gops->gr.load_smid_config = gr_gp10b_load_smid_config;