gpu: nvgpu: gv11b: Report LTC errors per slice

Add support to report ltc ecc errors per slice

(1) use new logic to detect subunits
(2) store size of array and check before comparison to prevent out of bounds
 derefencing
(3) use new hashing to prevent collisions or entries with permuted names

bug 2037425

Change-Id: I63b9f0df43b9dceddc1bae17924c4723072f569e
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1620854
GVS: Gerrit_Virtual_Submit
Reviewed-by: Chris Dragan <kdragan@nvidia.com>
Tested-by: Chris Dragan <kdragan@nvidia.com>
Reviewed-by: Nirav Patel <nipatel@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.h b/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.h
index 74db60d1..05832e87 100644
--- a/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.h
+++ b/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.h
@@ -25,11 +25,13 @@ int gr_gp10b_ecc_stat_create(struct device *dev,
                                 struct gk20a_ecc_stat *ecc_stat,
                                 struct device_attribute **dev_attr_array);
 int gp10b_ecc_stat_create(struct device *dev,
-                                int hw_units,
+                                int num_hw_units,
+                                int num_subunits,
                                 char *ecc_unit_name,
+                                char *ecc_subunit_name,
                                 char *ecc_stat_name,
                                 struct gk20a_ecc_stat *ecc_stat,
-                                struct device_attribute **dev_attr_array);
+                                struct device_attribute **__dev_attr_array);
 
 void gr_gp10b_ecc_stat_remove(struct device *dev,
                                 int is_l2,