1 files changed, 86 insertions, 27 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c b/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
index d8bd12d2..8e4cc0a2 100644
--- a/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
+++ b/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
@@ -450,10 +450,11 @@ static struct device_attribute *dev_attr_l2_ecc_ded_count_array;
 static u32 gen_ecc_hash_key(char *str)
 {
         int i = 0;
-        u32 hash_key = 0;
+        u32 hash_key = 0x811c9dc5;
 
         while (str[i]) {
-                hash_key += (u32)(str[i]);
+                hash_key *= 0x1000193;
+                hash_key ^= (u32)(str[i]);
                 i++;
         };
 
@@ -467,10 +468,16 @@ static ssize_t ecc_stat_show(struct device *dev,
         const char *ecc_stat_full_name = attr->attr.name;
         const char *ecc_stat_base_name;
         unsigned int hw_unit;
+        unsigned int subunit;
         struct gk20a_ecc_stat *ecc_stat;
         u32 hash_key;
+        struct gk20a *g = get_gk20a(dev);
 
-        if (sscanf(ecc_stat_full_name, "ltc%u", &hw_unit) == 1) {
+        if (sscanf(ecc_stat_full_name, "ltc%u_lts%u", &hw_unit,
+                                                        &subunit) == 2) {
+                ecc_stat_base_name = &(ecc_stat_full_name[strlen("ltc0_lts0_")]);
+                hw_unit = g->gr.slices_per_ltc * hw_unit + subunit;
+        } else if (sscanf(ecc_stat_full_name, "ltc%u", &hw_unit) == 1) {
                 ecc_stat_base_name = &(ecc_stat_full_name[strlen("ltc0_")]);
         } else if (sscanf(ecc_stat_full_name, "gpc0_tpc%u", &hw_unit) == 1) {
                 ecc_stat_base_name = &(ecc_stat_full_name[strlen("gpc0_tpc0_")]);
@@ -485,10 +492,13 @@ static ssize_t ecc_stat_show(struct device *dev,
         }
 
         hash_key = gen_ecc_hash_key((char *)ecc_stat_base_name);
+
         hash_for_each_possible(ecc_hash_table,
                                 ecc_stat,
                                 hash_node,
                                 hash_key) {
+                if (hw_unit >= ecc_stat->count)
+                        continue;
                 if (!strcmp(ecc_stat_full_name, ecc_stat->names[hw_unit]))
                         return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stat->counters[hw_unit]);
         }
@@ -505,16 +515,22 @@ int gr_gp10b_ecc_stat_create(struct device *dev,
         struct gk20a *g = get_gk20a(dev);
         char *ltc_unit_name = "ltc";
         char *gr_unit_name = "gpc0_tpc";
+        char *lts_unit_name = "lts";
         int num_hw_units = 0;
+        int num_subunits = 0;
 
-        if (is_l2)
+        if (is_l2 == 1)
                 num_hw_units = g->ltc_count;
-        else
+        else if (is_l2 == 2) {
+                num_hw_units = g->ltc_count;
+                num_subunits = g->gr.slices_per_ltc;
+        } else
                 num_hw_units = g->gr.tpc_count;
 
 
-        return gp10b_ecc_stat_create(dev, num_hw_units,
+        return gp10b_ecc_stat_create(dev, num_hw_units, num_subunits,
                                 is_l2 ? ltc_unit_name : gr_unit_name,
+                                num_subunits ? lts_unit_name: NULL,
                                 ecc_stat_name,
                                 ecc_stat,
                                 dev_attr_array);
@@ -522,7 +538,9 @@ int gr_gp10b_ecc_stat_create(struct device *dev,
 
 int gp10b_ecc_stat_create(struct device *dev,
                                 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)
@@ -530,21 +548,56 @@ int gp10b_ecc_stat_create(struct device *dev,
         int error = 0;
         struct gk20a *g = get_gk20a(dev);
         int hw_unit = 0;
+        int subunit = 0;
+        int element = 0;
         u32 hash_key = 0;
         struct device_attribute *dev_attr_array;
 
+        int num_elements = num_subunits ? num_subunits*num_hw_units :
+                num_hw_units;
+
         /* Allocate arrays */
         dev_attr_array = nvgpu_kzalloc(g, sizeof(struct device_attribute) *
-                                       num_hw_units);
-        ecc_stat->counters = nvgpu_kzalloc(g, sizeof(u32) * num_hw_units);
-        ecc_stat->names = nvgpu_kzalloc(g, sizeof(char *) * num_hw_units);
-        for (hw_unit = 0; hw_unit < num_hw_units; hw_unit++) {
+                                       num_elements);
+        ecc_stat->counters = nvgpu_kzalloc(g, sizeof(u32) * num_elements);
+        ecc_stat->names = nvgpu_kzalloc(g, sizeof(char *) * num_elements);
+        for (hw_unit = 0; hw_unit < num_elements; hw_unit++) {
                 ecc_stat->names[hw_unit] = nvgpu_kzalloc(g, sizeof(char) *
                                                 ECC_STAT_NAME_MAX_SIZE);
         }
+        ecc_stat->count = num_elements;
+        if (num_subunits) {
+                for (hw_unit = 0; hw_unit < num_hw_units; hw_unit++) {
+                        for (subunit = 0; subunit < num_subunits; subunit++) {
+                                element = hw_unit*num_subunits + subunit;
+
+                                snprintf(ecc_stat->names[element],
+                                        ECC_STAT_NAME_MAX_SIZE,
+                                        "%s%d_%s%d_%s",
+                                        ecc_unit_name,
+                                        hw_unit,
+                                        ecc_subunit_name,
+                                        subunit,
+                                        ecc_stat_name);
+
+                                sysfs_attr_init(&dev_attr_array[element].attr);
+                                dev_attr_array[element].attr.name =
+                                        ecc_stat->names[element];
+                                dev_attr_array[element].attr.mode =
+                                        VERIFY_OCTAL_PERMISSIONS(S_IRUGO);
+                                dev_attr_array[element].show = ecc_stat_show;
+                                dev_attr_array[element].store = NULL;
+
+                                /* Create sysfs file */
+                                error |= device_create_file(dev,
+                                                &dev_attr_array[element]);
+
+                        }
+                }
+        } else {
+                for (hw_unit = 0; hw_unit < num_hw_units; hw_unit++) {
 
-        for (hw_unit = 0; hw_unit < num_hw_units; hw_unit++) {
-                /* Fill in struct device_attribute members */
+                        /* Fill in struct device_attribute members */
                         snprintf(ecc_stat->names[hw_unit],
                                 ECC_STAT_NAME_MAX_SIZE,
                                 "%s%d_%s",
@@ -552,14 +605,18 @@ int gp10b_ecc_stat_create(struct device *dev,
                                 hw_unit,
                                 ecc_stat_name);
 
-                sysfs_attr_init(&dev_attr_array[hw_unit].attr);
-                dev_attr_array[hw_unit].attr.name = ecc_stat->names[hw_unit];
-                dev_attr_array[hw_unit].attr.mode = VERIFY_OCTAL_PERMISSIONS(S_IRUGO);
-                dev_attr_array[hw_unit].show = ecc_stat_show;
-                dev_attr_array[hw_unit].store = NULL;
-
-                /* Create sysfs file */
-                error |= device_create_file(dev, &dev_attr_array[hw_unit]);
+                        sysfs_attr_init(&dev_attr_array[hw_unit].attr);
+                        dev_attr_array[hw_unit].attr.name =
+                                                ecc_stat->names[hw_unit];
+                        dev_attr_array[hw_unit].attr.mode =
+                                        VERIFY_OCTAL_PERMISSIONS(S_IRUGO);
+                        dev_attr_array[hw_unit].show = ecc_stat_show;
+                        dev_attr_array[hw_unit].store = NULL;
+
+                        /* Create sysfs file */
+                        error |= device_create_file(dev,
+                                        &dev_attr_array[hw_unit]);
+                }
         }
 
         /* Add hash table entry */
@@ -581,8 +638,10 @@ void gr_gp10b_ecc_stat_remove(struct device *dev,
         struct gk20a *g = get_gk20a(dev);
         int num_hw_units = 0;
 
-        if (is_l2)
+        if (is_l2 == 1)
                 num_hw_units = g->ltc_count;
+        else if (is_l2 == 2)
+                num_hw_units = g->ltc_count * g->gr.slices_per_ltc;
         else
                 num_hw_units = g->gr.tpc_count;
 
@@ -695,13 +754,13 @@ void gr_gp10b_create_sysfs(struct gk20a *g)
                                 &dev_attr_tex_ecc_unique_ded_pipe1_count_array);
 
         error |= gr_gp10b_ecc_stat_create(dev,
-                                1,
-                                "lts0_ecc_sec_count",
+                                2,
+                                "ecc_sec_count",
                                 &g->ecc.ltc.l2_sec_count,
                                 &dev_attr_l2_ecc_sec_count_array);
         error |= gr_gp10b_ecc_stat_create(dev,
-                                1,
-                                "lts0_ecc_ded_count",
+                                2,
+                                "ecc_ded_count",
                                 &g->ecc.ltc.l2_ded_count,
                                 &dev_attr_l2_ecc_ded_count_array);
 
@@ -769,11 +828,11 @@ static void gr_gp10b_remove_sysfs(struct device *dev)
                         dev_attr_tex_ecc_unique_ded_pipe1_count_array);
 
         gr_gp10b_ecc_stat_remove(dev,
-                        1,
+                        2,
                         &g->ecc.ltc.l2_sec_count,
                         dev_attr_l2_ecc_sec_count_array);
         gr_gp10b_ecc_stat_remove(dev,
-                        1,
+                        2,
                         &g->ecc.ltc.l2_ded_count,
                         dev_attr_l2_ecc_ded_count_array);
 }