gpu: nvgpu: ECC override

-sysfs functions to call into LS PMU and modify
 ECC overide register

Bug 1699676

Change-Id: Iaf6cc3a86160b806e52ab168577caad42b2c5d22
Signed-off-by: Supriya <ssharatkumar@nvidia.com>
Reviewed-on: http://git-master/r/921252
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
index 90d0ce8d..9eea7d43 100644
--- a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
@@ -28,6 +28,7 @@
 #include "hw_proj_gp10b.h"
 #include "hw_ctxsw_prog_gp10b.h"
 #include "hw_mc_gp10b.h"
+#include "gp10b_sysfs.h"
 #include <linux/vmalloc.h>
 
 static bool gr_gp10b_is_valid_class(struct gk20a *g, u32 class_num)
@@ -1702,6 +1703,14 @@ static u32 gp10b_mask_hww_warp_esr(u32 hww_warp_esr)
         return hww_warp_esr;
 }
 
+static u32 get_ecc_override_val(struct gk20a *g)
+{
+        if (tegra_fuse_readl(FUSE_OPT_ECC_EN))
+                return gk20a_readl(g, gr_fecs_feature_override_ecc_r());
+        else
+                return 0;
+}
+
 void gp10b_init_gr(struct gpu_ops *gops)
 {
         gm20b_init_gr(gops);
@@ -1739,4 +1748,5 @@ void gp10b_init_gr(struct gpu_ops *gops)
                 gr_gp10b_pre_process_sm_exception;
         gops->gr.handle_fecs_error = gr_gp10b_handle_fecs_error;
         gops->gr.create_gr_sysfs = gr_gp10b_create_sysfs;
+        gops->gr.get_lrf_tex_ltc_dram_override = get_ecc_override_val;
 }