Release 4.11 drivers/vfio/mdev/vfio_mdev.c
/*
* VFIO based driver for Mediated device
*
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
* Author: Neo Jia <cjia@nvidia.com>
* Kirti Wankhede <kwankhede@nvidia.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/vfio.h>
#include <linux/mdev.h>
#include "mdev_private.h"
#define DRIVER_VERSION "0.1"
#define DRIVER_AUTHOR "NVIDIA Corporation"
#define DRIVER_DESC "VFIO based driver for Mediated device"
static int vfio_mdev_open(void *device_data)
{
struct mdev_device *mdev = device_data;
struct mdev_parent *parent = mdev->parent;
int ret;
if (unlikely(!parent->ops->open))
return -EINVAL;
if (!try_module_get(THIS_MODULE))
return -ENODEV;
ret = parent->ops->open(mdev);
if (ret)
module_put(THIS_MODULE);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 79 | 98.75% | 1 | 50.00% |
| Alex Williamson | 1 | 1.25% | 1 | 50.00% |
| Total | 80 | 100.00% | 2 | 100.00% |
static void vfio_mdev_release(void *device_data)
{
struct mdev_device *mdev = device_data;
struct mdev_parent *parent = mdev->parent;
if (likely(parent->ops->release))
parent->ops->release(mdev);
module_put(THIS_MODULE);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 50 | 98.04% | 1 | 50.00% |
| Alex Williamson | 1 | 1.96% | 1 | 50.00% |
| Total | 51 | 100.00% | 2 | 100.00% |
static long vfio_mdev_unlocked_ioctl(void *device_data,
unsigned int cmd, unsigned long arg)
{
struct mdev_device *mdev = device_data;
struct mdev_parent *parent = mdev->parent;
if (unlikely(!parent->ops->ioctl))
return -EINVAL;
return parent->ops->ioctl(mdev, cmd, arg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 63 | 98.44% | 1 | 50.00% |
| Alex Williamson | 1 | 1.56% | 1 | 50.00% |
| Total | 64 | 100.00% | 2 | 100.00% |
static ssize_t vfio_mdev_read(void *device_data, char __user *buf,
size_t count, loff_t *ppos)
{
struct mdev_device *mdev = device_data;
struct mdev_parent *parent = mdev->parent;
if (unlikely(!parent->ops->read))
return -EINVAL;
return parent->ops->read(mdev, buf, count, ppos);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 69 | 98.57% | 1 | 50.00% |
| Alex Williamson | 1 | 1.43% | 1 | 50.00% |
| Total | 70 | 100.00% | 2 | 100.00% |
static ssize_t vfio_mdev_write(void *device_data, const char __user *buf,
size_t count, loff_t *ppos)
{
struct mdev_device *mdev = device_data;
struct mdev_parent *parent = mdev->parent;
if (unlikely(!parent->ops->write))
return -EINVAL;
return parent->ops->write(mdev, buf, count, ppos);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 70 | 98.59% | 1 | 50.00% |
| Alex Williamson | 1 | 1.41% | 1 | 50.00% |
| Total | 71 | 100.00% | 2 | 100.00% |
static int vfio_mdev_mmap(void *device_data, struct vm_area_struct *vma)
{
struct mdev_device *mdev = device_data;
struct mdev_parent *parent = mdev->parent;
if (unlikely(!parent->ops->mmap))
return -EINVAL;
return parent->ops->mmap(mdev, vma);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 58 | 98.31% | 1 | 50.00% |
| Alex Williamson | 1 | 1.69% | 1 | 50.00% |
| Total | 59 | 100.00% | 2 | 100.00% |
static const struct vfio_device_ops vfio_mdev_dev_ops = {
.name = "vfio-mdev",
.open = vfio_mdev_open,
.release = vfio_mdev_release,
.ioctl = vfio_mdev_unlocked_ioctl,
.read = vfio_mdev_read,
.write = vfio_mdev_write,
.mmap = vfio_mdev_mmap,
};
int vfio_mdev_probe(struct device *dev)
{
struct mdev_device *mdev = to_mdev_device(dev);
return vfio_add_group_dev(dev, &vfio_mdev_dev_ops, mdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
void vfio_mdev_remove(struct device *dev)
{
vfio_del_group_dev(dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
struct mdev_driver vfio_mdev_driver = {
.name = "vfio_mdev",
.probe = vfio_mdev_probe,
.remove = vfio_mdev_remove,
};
static int __init vfio_mdev_init(void)
{
return mdev_register_driver(&vfio_mdev_driver, THIS_MODULE);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
static void __exit vfio_mdev_exit(void)
{
mdev_unregister_driver(&vfio_mdev_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_init(vfio_mdev_init)
module_exit(vfio_mdev_exit)
MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kirti Wankhede | 597 | 99.00% | 1 | 50.00% |
| Alex Williamson | 6 | 1.00% | 1 | 50.00% |
| Total | 603 | 100.00% | 2 | 100.00% |
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