1 files changed, 55 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/sysfs_vgpu.c b/drivers/gpu/nvgpu/vgpu/sysfs_vgpu.c
new file mode 100644
index 00000000..30b503db
--- /dev/null
+++ b/drivers/gpu/nvgpu/vgpu/sysfs_vgpu.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/device.h>
+
+#include "vgpu/vgpu.h"
+
+static ssize_t vgpu_load_show(struct device *dev,
+                              struct device_attribute *attr,
+                              char *buf)
+{
+        struct gk20a *g = get_gk20a(dev);
+        struct tegra_vgpu_cmd_msg msg = {0};
+        struct tegra_vgpu_gpu_load_params *p = &msg.params.gpu_load;
+        int err;
+
+        msg.cmd = TEGRA_VGPU_CMD_GET_GPU_LOAD;
+        msg.handle = vgpu_get_handle(g);
+        err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
+        if (err)
+                return err;
+
+        return snprintf(buf, PAGE_SIZE, "%u\n", p->load);
+}
+static DEVICE_ATTR(load, S_IRUGO, vgpu_load_show, NULL);
+
+void vgpu_create_sysfs(struct device *dev)
+{
+        if (device_create_file(dev, &dev_attr_load))
+                dev_err(dev, "Failed to create vgpu sysfs attributes!\n");
+}
+
+void vgpu_remove_sysfs(struct device *dev)
+{
+        device_remove_file(dev, &dev_attr_load);
+}