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/*
* 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);
}
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