1 files changed, 35 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/gp10b_sysfs.c b/drivers/gpu/nvgpu/gp10b/gp10b_sysfs.c
index d42afb4c..ee14d00c 100644
--- a/drivers/gpu/nvgpu/gp10b/gp10b_sysfs.c
+++ b/drivers/gpu/nvgpu/gp10b/gp10b_sysfs.c
@@ -1,7 +1,7 @@
 /*
  * GP10B specific sysfs files
  *
- * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -18,6 +18,8 @@
 #include "gk20a/gk20a.h"
 #include "gp10b_sysfs.h"
 
+#include <nvgpu/hw/gp10b/hw_gr_gp10b.h>
+
 #define ROOTRW (S_IRWXU|S_IRGRP|S_IROTH)
 
 static ssize_t ecc_enable_store(struct device *dev,
@@ -49,12 +51,43 @@ static ssize_t ecc_enable_read(struct device *dev,
 
 static DEVICE_ATTR(ecc_enable, ROOTRW, ecc_enable_read, ecc_enable_store);
 
+
+static ssize_t czf_bypass_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t count)
+{
+        struct gk20a *g = get_gk20a(dev);
+        unsigned long val;
+
+        if (kstrtoul(buf, 10, &val) < 0)
+                return -EINVAL;
+
+        if (val >= 4)
+                return -EINVAL;
+
+        g->gr.czf_bypass = val;
+
+        return count;
+}
+
+static ssize_t czf_bypass_read(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct gk20a *g = get_gk20a(dev);
+
+        return sprintf(buf, "%d\n", g->gr.czf_bypass);
+}
+
+static DEVICE_ATTR(czf_bypass, ROOTRW, czf_bypass_read, czf_bypass_store);
+
 void gp10b_create_sysfs(struct device *dev)
 {
         struct gk20a *g = get_gk20a(dev);
         int error = 0;
 
+        g->gr.czf_bypass = gr_gpc0_prop_debug1_czf_bypass_init_v();
+
         error |= device_create_file(dev, &dev_attr_ecc_enable);
+        error |= device_create_file(dev, &dev_attr_czf_bypass);
         if (error)
                 nvgpu_err(g, "Failed to create sysfs attributes!\n");
 }
@@ -62,4 +95,5 @@ void gp10b_create_sysfs(struct device *dev)
 void gp10b_remove_sysfs(struct device *dev)
 {
         device_remove_file(dev, &dev_attr_ecc_enable);
+        device_remove_file(dev, &dev_attr_czf_bypass);
 }