gpu: nvgpu: gv11b: init enable_exceptions gr ops

Enable FE, MEMFMT, DS and GPC exceptions only.
Make sure corresponding HWW_ESR are enabled too.

JIRA GPUT19X-75

Change-Id: Icf47b7e531dd72b59cbc6ac54b5902187f703d61
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: http://git-master/r/1474859
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/gr_gv11b.c b/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
index 8b4471ca..a9f1183e 100644
--- a/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
@@ -284,6 +284,29 @@ static int gr_gv11b_handle_lrf_exception(struct gk20a *g, u32 gpc, u32 tpc,
 
 }
 
+static void gr_gv11b_enable_exceptions(struct gk20a *g)
+{
+        struct gr_gk20a *gr = &g->gr;
+        u32 reg_val;
+
+        /*
+         * clear exceptions :
+         * other than SM : hww_esr are reset in *enable_hww_excetpions*
+         * SM            : cleared in *set_hww_esr_report_mask*
+         */
+
+        /* enable exceptions */
+        gk20a_writel(g, gr_exception2_en_r(), 0x0); /* BE not enabled */
+        gk20a_writel(g, gr_exception1_en_r(), (1 << gr->gpc_count) - 1);
+
+        reg_val = gr_exception_en_fe_enabled_f() |
+                        gr_exception_en_memfmt_enabled_f() |
+                        gr_exception_en_ds_enabled_f() |
+                        gr_exception_en_gpc_enabled_f();
+        gk20a_writel(g, gr_exception_en_r(), reg_val);
+
+}
+
 static int gr_gv11b_handle_cbu_exception(struct gk20a *g, u32 gpc, u32 tpc,
                         bool *post_event, struct channel_gk20a *fault_ch,
                         u32 *hww_global_esr)
@@ -2375,6 +2398,7 @@ void gv11b_init_gr(struct gpu_ops *gops)
         gops->gr.handle_gcc_exception = gr_gv11b_handle_gcc_exception;
         gops->gr.handle_tex_exception = gr_gv11b_handle_tex_exception;
         gops->gr.enable_gpc_exceptions = gr_gv11b_enable_gpc_exceptions;
+        gops->gr.enable_exceptions = gr_gv11b_enable_exceptions;
         gops->gr.mask_hww_warp_esr = gv11b_mask_hww_warp_esr;
         gops->gr.pre_process_sm_exception =
                 gr_gv11b_pre_process_sm_exception;