gpu: nvgpu : GPC MMU ECC support

Adding support for handling of GPC MMU errors

JIRA: GPUT19X-112

Change-Id: Iadeef017587e5dce3698026eef4ad94676c3c02b
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1490771
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

2 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 899c1d6a..89b414be 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -313,6 +313,8 @@ struct gpu_ops {
                                                 bool *post_event);
                 int (*handle_gpc_gpccs_exception)(struct gk20a *g, u32 gpc,
                                                 u32 gpc_exception);
+                int (*handle_gpc_gpcmmu_exception)(struct gk20a *g, u32 gpc,
+                                                u32 gpc_exception);
                 void (*enable_gpc_exceptions)(struct gk20a *g);
                 void (*enable_exceptions)(struct gk20a *g);
                 void (*create_gr_sysfs)(struct device *dev);
diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 982cfac8..3b46b807 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -6378,6 +6378,16 @@ static int gk20a_gr_handle_gpc_exception(struct gk20a *g, bool *post_event,
                                                                 gpc_exception);
                         ret = ret ? ret : ret_ecc;
                 }
+
+                /* Handle GPCMMU exceptions */
+                if (g->ops.gr.handle_gpc_gpcmmu_exception) {
+                        int ret_mmu = 0;
+
+                        ret_mmu = g->ops.gr.handle_gpc_gpcmmu_exception(g, gpc,
+                                                                gpc_exception);
+                        ret = ret ? ret : ret_mmu;
+                }
+
         }
 
         return ret;