mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-10 12:34:07 +08:00
3b62a62429
The vfio core driver is now taking refcount on the provider drivers, remove redundant parent_module attribute from vfio_platform_device structure. Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> Acked-by: Eric Auger <eric.auger@redhat.com> Link: https://lore.kernel.org/r/20210518192133.59195-3-mgurtovoy@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2013 - Virtual Open Systems
|
|
* Author: Antonios Motakis <a.motakis@virtualopensystems.com>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/vfio.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include "vfio_platform_private.h"
|
|
|
|
#define DRIVER_VERSION "0.10"
|
|
#define DRIVER_AUTHOR "Antonios Motakis <a.motakis@virtualopensystems.com>"
|
|
#define DRIVER_DESC "VFIO for platform devices - User Level meta-driver"
|
|
|
|
static bool reset_required = true;
|
|
module_param(reset_required, bool, 0444);
|
|
MODULE_PARM_DESC(reset_required, "override reset requirement (default: 1)");
|
|
|
|
/* probing devices from the linux platform bus */
|
|
|
|
static struct resource *get_platform_resource(struct vfio_platform_device *vdev,
|
|
int num)
|
|
{
|
|
struct platform_device *dev = (struct platform_device *) vdev->opaque;
|
|
|
|
return platform_get_mem_or_io(dev, num);
|
|
}
|
|
|
|
static int get_platform_irq(struct vfio_platform_device *vdev, int i)
|
|
{
|
|
struct platform_device *pdev = (struct platform_device *) vdev->opaque;
|
|
|
|
return platform_get_irq_optional(pdev, i);
|
|
}
|
|
|
|
static int vfio_platform_probe(struct platform_device *pdev)
|
|
{
|
|
struct vfio_platform_device *vdev;
|
|
int ret;
|
|
|
|
vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
|
|
if (!vdev)
|
|
return -ENOMEM;
|
|
|
|
vdev->opaque = (void *) pdev;
|
|
vdev->name = pdev->name;
|
|
vdev->flags = VFIO_DEVICE_FLAGS_PLATFORM;
|
|
vdev->get_resource = get_platform_resource;
|
|
vdev->get_irq = get_platform_irq;
|
|
vdev->reset_required = reset_required;
|
|
|
|
ret = vfio_platform_probe_common(vdev, &pdev->dev);
|
|
if (ret) {
|
|
kfree(vdev);
|
|
return ret;
|
|
}
|
|
dev_set_drvdata(&pdev->dev, vdev);
|
|
return 0;
|
|
}
|
|
|
|
static int vfio_platform_remove(struct platform_device *pdev)
|
|
{
|
|
struct vfio_platform_device *vdev = dev_get_drvdata(&pdev->dev);
|
|
|
|
vfio_platform_remove_common(vdev);
|
|
kfree(vdev);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver vfio_platform_driver = {
|
|
.probe = vfio_platform_probe,
|
|
.remove = vfio_platform_remove,
|
|
.driver = {
|
|
.name = "vfio-platform",
|
|
},
|
|
};
|
|
|
|
module_platform_driver(vfio_platform_driver);
|
|
|
|
MODULE_VERSION(DRIVER_VERSION);
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|