709 lines
17 KiB
C
709 lines
17 KiB
C
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
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/*
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* Copyright 2013-2016 Freescale Semiconductor Inc.
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* Copyright 2016-2017,2019-2020 NXP
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*/
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#include <linux/device.h>
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#include <linux/iommu.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/vfio.h>
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#include <linux/fsl/mc.h>
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#include <linux/delay.h>
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#include <linux/io-64-nonatomic-hi-lo.h>
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#include "vfio_fsl_mc_private.h"
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static struct fsl_mc_driver vfio_fsl_mc_driver;
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static DEFINE_MUTEX(reflck_lock);
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static void vfio_fsl_mc_reflck_get(struct vfio_fsl_mc_reflck *reflck)
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{
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kref_get(&reflck->kref);
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}
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static void vfio_fsl_mc_reflck_release(struct kref *kref)
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{
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struct vfio_fsl_mc_reflck *reflck = container_of(kref,
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struct vfio_fsl_mc_reflck,
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kref);
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mutex_destroy(&reflck->lock);
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kfree(reflck);
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mutex_unlock(&reflck_lock);
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}
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static void vfio_fsl_mc_reflck_put(struct vfio_fsl_mc_reflck *reflck)
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{
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kref_put_mutex(&reflck->kref, vfio_fsl_mc_reflck_release, &reflck_lock);
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}
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static struct vfio_fsl_mc_reflck *vfio_fsl_mc_reflck_alloc(void)
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{
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struct vfio_fsl_mc_reflck *reflck;
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reflck = kzalloc(sizeof(*reflck), GFP_KERNEL);
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if (!reflck)
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return ERR_PTR(-ENOMEM);
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kref_init(&reflck->kref);
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mutex_init(&reflck->lock);
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return reflck;
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}
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static int vfio_fsl_mc_reflck_attach(struct vfio_fsl_mc_device *vdev)
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{
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int ret = 0;
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mutex_lock(&reflck_lock);
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if (is_fsl_mc_bus_dprc(vdev->mc_dev)) {
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vdev->reflck = vfio_fsl_mc_reflck_alloc();
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ret = PTR_ERR_OR_ZERO(vdev->reflck);
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} else {
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struct device *mc_cont_dev = vdev->mc_dev->dev.parent;
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struct vfio_device *device;
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struct vfio_fsl_mc_device *cont_vdev;
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device = vfio_device_get_from_dev(mc_cont_dev);
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if (!device) {
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ret = -ENODEV;
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goto unlock;
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}
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cont_vdev =
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container_of(device, struct vfio_fsl_mc_device, vdev);
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if (!cont_vdev || !cont_vdev->reflck) {
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vfio_device_put(device);
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ret = -ENODEV;
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goto unlock;
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}
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vfio_fsl_mc_reflck_get(cont_vdev->reflck);
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vdev->reflck = cont_vdev->reflck;
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vfio_device_put(device);
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}
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unlock:
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mutex_unlock(&reflck_lock);
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return ret;
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}
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static int vfio_fsl_mc_regions_init(struct vfio_fsl_mc_device *vdev)
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{
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struct fsl_mc_device *mc_dev = vdev->mc_dev;
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int count = mc_dev->obj_desc.region_count;
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int i;
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vdev->regions = kcalloc(count, sizeof(struct vfio_fsl_mc_region),
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GFP_KERNEL);
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if (!vdev->regions)
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return -ENOMEM;
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for (i = 0; i < count; i++) {
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struct resource *res = &mc_dev->regions[i];
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int no_mmap = is_fsl_mc_bus_dprc(mc_dev);
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vdev->regions[i].addr = res->start;
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vdev->regions[i].size = resource_size(res);
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vdev->regions[i].type = mc_dev->regions[i].flags & IORESOURCE_BITS;
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/*
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* Only regions addressed with PAGE granularity may be
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* MMAPed securely.
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*/
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if (!no_mmap && !(vdev->regions[i].addr & ~PAGE_MASK) &&
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!(vdev->regions[i].size & ~PAGE_MASK))
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vdev->regions[i].flags |=
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VFIO_REGION_INFO_FLAG_MMAP;
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vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ;
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if (!(mc_dev->regions[i].flags & IORESOURCE_READONLY))
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vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_WRITE;
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}
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return 0;
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}
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static void vfio_fsl_mc_regions_cleanup(struct vfio_fsl_mc_device *vdev)
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{
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struct fsl_mc_device *mc_dev = vdev->mc_dev;
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int i;
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for (i = 0; i < mc_dev->obj_desc.region_count; i++)
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iounmap(vdev->regions[i].ioaddr);
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kfree(vdev->regions);
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}
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static int vfio_fsl_mc_open(struct vfio_device *core_vdev)
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{
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struct vfio_fsl_mc_device *vdev =
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container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
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int ret = 0;
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mutex_lock(&vdev->reflck->lock);
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if (!vdev->refcnt) {
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ret = vfio_fsl_mc_regions_init(vdev);
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if (ret)
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goto out;
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}
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vdev->refcnt++;
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out:
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mutex_unlock(&vdev->reflck->lock);
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return ret;
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}
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static void vfio_fsl_mc_release(struct vfio_device *core_vdev)
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{
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struct vfio_fsl_mc_device *vdev =
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container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
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int ret;
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mutex_lock(&vdev->reflck->lock);
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if (!(--vdev->refcnt)) {
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struct fsl_mc_device *mc_dev = vdev->mc_dev;
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struct device *cont_dev = fsl_mc_cont_dev(&mc_dev->dev);
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struct fsl_mc_device *mc_cont = to_fsl_mc_device(cont_dev);
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vfio_fsl_mc_regions_cleanup(vdev);
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/* reset the device before cleaning up the interrupts */
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ret = dprc_reset_container(mc_cont->mc_io, 0,
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mc_cont->mc_handle,
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mc_cont->obj_desc.id,
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DPRC_RESET_OPTION_NON_RECURSIVE);
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if (ret) {
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dev_warn(&mc_cont->dev, "VFIO_FLS_MC: reset device has failed (%d)\n",
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ret);
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WARN_ON(1);
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}
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vfio_fsl_mc_irqs_cleanup(vdev);
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fsl_mc_cleanup_irq_pool(mc_cont);
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}
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mutex_unlock(&vdev->reflck->lock);
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}
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static long vfio_fsl_mc_ioctl(struct vfio_device *core_vdev,
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unsigned int cmd, unsigned long arg)
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{
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unsigned long minsz;
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struct vfio_fsl_mc_device *vdev =
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container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
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struct fsl_mc_device *mc_dev = vdev->mc_dev;
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switch (cmd) {
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case VFIO_DEVICE_GET_INFO:
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{
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struct vfio_device_info info;
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minsz = offsetofend(struct vfio_device_info, num_irqs);
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if (copy_from_user(&info, (void __user *)arg, minsz))
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return -EFAULT;
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if (info.argsz < minsz)
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return -EINVAL;
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info.flags = VFIO_DEVICE_FLAGS_FSL_MC;
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if (is_fsl_mc_bus_dprc(mc_dev))
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info.flags |= VFIO_DEVICE_FLAGS_RESET;
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info.num_regions = mc_dev->obj_desc.region_count;
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info.num_irqs = mc_dev->obj_desc.irq_count;
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return copy_to_user((void __user *)arg, &info, minsz) ?
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-EFAULT : 0;
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}
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case VFIO_DEVICE_GET_REGION_INFO:
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{
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struct vfio_region_info info;
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minsz = offsetofend(struct vfio_region_info, offset);
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if (copy_from_user(&info, (void __user *)arg, minsz))
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return -EFAULT;
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if (info.argsz < minsz)
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return -EINVAL;
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if (info.index >= mc_dev->obj_desc.region_count)
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return -EINVAL;
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/* map offset to the physical address */
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info.offset = VFIO_FSL_MC_INDEX_TO_OFFSET(info.index);
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info.size = vdev->regions[info.index].size;
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info.flags = vdev->regions[info.index].flags;
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if (copy_to_user((void __user *)arg, &info, minsz))
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return -EFAULT;
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return 0;
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}
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case VFIO_DEVICE_GET_IRQ_INFO:
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{
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struct vfio_irq_info info;
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minsz = offsetofend(struct vfio_irq_info, count);
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if (copy_from_user(&info, (void __user *)arg, minsz))
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return -EFAULT;
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if (info.argsz < minsz)
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return -EINVAL;
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if (info.index >= mc_dev->obj_desc.irq_count)
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return -EINVAL;
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info.flags = VFIO_IRQ_INFO_EVENTFD;
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info.count = 1;
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if (copy_to_user((void __user *)arg, &info, minsz))
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return -EFAULT;
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return 0;
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}
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case VFIO_DEVICE_SET_IRQS:
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{
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struct vfio_irq_set hdr;
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u8 *data = NULL;
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int ret = 0;
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size_t data_size = 0;
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minsz = offsetofend(struct vfio_irq_set, count);
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if (copy_from_user(&hdr, (void __user *)arg, minsz))
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return -EFAULT;
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ret = vfio_set_irqs_validate_and_prepare(&hdr, mc_dev->obj_desc.irq_count,
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mc_dev->obj_desc.irq_count, &data_size);
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if (ret)
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return ret;
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if (data_size) {
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data = memdup_user((void __user *)(arg + minsz),
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data_size);
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if (IS_ERR(data))
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return PTR_ERR(data);
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}
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mutex_lock(&vdev->igate);
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ret = vfio_fsl_mc_set_irqs_ioctl(vdev, hdr.flags,
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hdr.index, hdr.start,
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hdr.count, data);
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mutex_unlock(&vdev->igate);
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kfree(data);
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return ret;
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}
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case VFIO_DEVICE_RESET:
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{
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int ret;
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struct fsl_mc_device *mc_dev = vdev->mc_dev;
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/* reset is supported only for the DPRC */
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if (!is_fsl_mc_bus_dprc(mc_dev))
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return -ENOTTY;
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ret = dprc_reset_container(mc_dev->mc_io, 0,
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mc_dev->mc_handle,
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mc_dev->obj_desc.id,
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DPRC_RESET_OPTION_NON_RECURSIVE);
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return ret;
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}
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default:
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return -ENOTTY;
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}
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}
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static ssize_t vfio_fsl_mc_read(struct vfio_device *core_vdev, char __user *buf,
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size_t count, loff_t *ppos)
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{
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struct vfio_fsl_mc_device *vdev =
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container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
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unsigned int index = VFIO_FSL_MC_OFFSET_TO_INDEX(*ppos);
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loff_t off = *ppos & VFIO_FSL_MC_OFFSET_MASK;
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struct fsl_mc_device *mc_dev = vdev->mc_dev;
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struct vfio_fsl_mc_region *region;
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u64 data[8];
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int i;
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if (index >= mc_dev->obj_desc.region_count)
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return -EINVAL;
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region = &vdev->regions[index];
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if (!(region->flags & VFIO_REGION_INFO_FLAG_READ))
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return -EINVAL;
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if (!region->ioaddr) {
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region->ioaddr = ioremap(region->addr, region->size);
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if (!region->ioaddr)
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return -ENOMEM;
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}
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if (count != 64 || off != 0)
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return -EINVAL;
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for (i = 7; i >= 0; i--)
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data[i] = readq(region->ioaddr + i * sizeof(uint64_t));
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if (copy_to_user(buf, data, 64))
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return -EFAULT;
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return count;
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}
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#define MC_CMD_COMPLETION_TIMEOUT_MS 5000
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#define MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS 500
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static int vfio_fsl_mc_send_command(void __iomem *ioaddr, uint64_t *cmd_data)
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{
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int i;
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enum mc_cmd_status status;
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unsigned long timeout_usecs = MC_CMD_COMPLETION_TIMEOUT_MS * 1000;
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/* Write at command parameter into portal */
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for (i = 7; i >= 1; i--)
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writeq_relaxed(cmd_data[i], ioaddr + i * sizeof(uint64_t));
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/* Write command header in the end */
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writeq(cmd_data[0], ioaddr);
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/* Wait for response before returning to user-space
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* This can be optimized in future to even prepare response
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* before returning to user-space and avoid read ioctl.
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*/
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for (;;) {
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u64 header;
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struct mc_cmd_header *resp_hdr;
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header = cpu_to_le64(readq_relaxed(ioaddr));
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resp_hdr = (struct mc_cmd_header *)&header;
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status = (enum mc_cmd_status)resp_hdr->status;
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if (status != MC_CMD_STATUS_READY)
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break;
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udelay(MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
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timeout_usecs -= MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS;
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if (timeout_usecs == 0)
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return -ETIMEDOUT;
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}
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return 0;
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}
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static ssize_t vfio_fsl_mc_write(struct vfio_device *core_vdev,
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const char __user *buf, size_t count,
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loff_t *ppos)
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{
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struct vfio_fsl_mc_device *vdev =
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container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
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unsigned int index = VFIO_FSL_MC_OFFSET_TO_INDEX(*ppos);
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loff_t off = *ppos & VFIO_FSL_MC_OFFSET_MASK;
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struct fsl_mc_device *mc_dev = vdev->mc_dev;
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struct vfio_fsl_mc_region *region;
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u64 data[8];
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int ret;
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if (index >= mc_dev->obj_desc.region_count)
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return -EINVAL;
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region = &vdev->regions[index];
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if (!(region->flags & VFIO_REGION_INFO_FLAG_WRITE))
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return -EINVAL;
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if (!region->ioaddr) {
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region->ioaddr = ioremap(region->addr, region->size);
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if (!region->ioaddr)
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return -ENOMEM;
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}
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if (count != 64 || off != 0)
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return -EINVAL;
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if (copy_from_user(&data, buf, 64))
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return -EFAULT;
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ret = vfio_fsl_mc_send_command(region->ioaddr, data);
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if (ret)
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return ret;
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return count;
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}
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static int vfio_fsl_mc_mmap_mmio(struct vfio_fsl_mc_region region,
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struct vm_area_struct *vma)
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{
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u64 size = vma->vm_end - vma->vm_start;
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u64 pgoff, base;
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u8 region_cacheable;
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pgoff = vma->vm_pgoff &
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((1U << (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT)) - 1);
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base = pgoff << PAGE_SHIFT;
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if (region.size < PAGE_SIZE || base + size > region.size)
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return -EINVAL;
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region_cacheable = (region.type & FSL_MC_REGION_CACHEABLE) &&
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(region.type & FSL_MC_REGION_SHAREABLE);
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if (!region_cacheable)
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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vma->vm_pgoff = (region.addr >> PAGE_SHIFT) + pgoff;
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return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
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size, vma->vm_page_prot);
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}
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static int vfio_fsl_mc_mmap(struct vfio_device *core_vdev,
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struct vm_area_struct *vma)
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{
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struct vfio_fsl_mc_device *vdev =
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container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
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struct fsl_mc_device *mc_dev = vdev->mc_dev;
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unsigned int index;
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index = vma->vm_pgoff >> (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT);
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if (vma->vm_end < vma->vm_start)
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return -EINVAL;
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if (vma->vm_start & ~PAGE_MASK)
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return -EINVAL;
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if (vma->vm_end & ~PAGE_MASK)
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return -EINVAL;
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if (!(vma->vm_flags & VM_SHARED))
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return -EINVAL;
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if (index >= mc_dev->obj_desc.region_count)
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return -EINVAL;
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if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_MMAP))
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return -EINVAL;
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if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ)
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&& (vma->vm_flags & VM_READ))
|
|
return -EINVAL;
|
|
|
|
if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE)
|
|
&& (vma->vm_flags & VM_WRITE))
|
|
return -EINVAL;
|
|
|
|
vma->vm_private_data = mc_dev;
|
|
|
|
return vfio_fsl_mc_mmap_mmio(vdev->regions[index], vma);
|
|
}
|
|
|
|
static const struct vfio_device_ops vfio_fsl_mc_ops = {
|
|
.name = "vfio-fsl-mc",
|
|
.open = vfio_fsl_mc_open,
|
|
.release = vfio_fsl_mc_release,
|
|
.ioctl = vfio_fsl_mc_ioctl,
|
|
.read = vfio_fsl_mc_read,
|
|
.write = vfio_fsl_mc_write,
|
|
.mmap = vfio_fsl_mc_mmap,
|
|
};
|
|
|
|
static int vfio_fsl_mc_bus_notifier(struct notifier_block *nb,
|
|
unsigned long action, void *data)
|
|
{
|
|
struct vfio_fsl_mc_device *vdev = container_of(nb,
|
|
struct vfio_fsl_mc_device, nb);
|
|
struct device *dev = data;
|
|
struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
struct fsl_mc_device *mc_cont = to_fsl_mc_device(mc_dev->dev.parent);
|
|
|
|
if (action == BUS_NOTIFY_ADD_DEVICE &&
|
|
vdev->mc_dev == mc_cont) {
|
|
mc_dev->driver_override = kasprintf(GFP_KERNEL, "%s",
|
|
vfio_fsl_mc_ops.name);
|
|
if (!mc_dev->driver_override)
|
|
dev_warn(dev, "VFIO_FSL_MC: Setting driver override for device in dprc %s failed\n",
|
|
dev_name(&mc_cont->dev));
|
|
else
|
|
dev_info(dev, "VFIO_FSL_MC: Setting driver override for device in dprc %s\n",
|
|
dev_name(&mc_cont->dev));
|
|
} else if (action == BUS_NOTIFY_BOUND_DRIVER &&
|
|
vdev->mc_dev == mc_cont) {
|
|
struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
|
|
|
|
if (mc_drv && mc_drv != &vfio_fsl_mc_driver)
|
|
dev_warn(dev, "VFIO_FSL_MC: Object %s bound to driver %s while DPRC bound to vfio-fsl-mc\n",
|
|
dev_name(dev), mc_drv->driver.name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vfio_fsl_mc_init_device(struct vfio_fsl_mc_device *vdev)
|
|
{
|
|
struct fsl_mc_device *mc_dev = vdev->mc_dev;
|
|
int ret;
|
|
|
|
/* Non-dprc devices share mc_io from parent */
|
|
if (!is_fsl_mc_bus_dprc(mc_dev)) {
|
|
struct fsl_mc_device *mc_cont = to_fsl_mc_device(mc_dev->dev.parent);
|
|
|
|
mc_dev->mc_io = mc_cont->mc_io;
|
|
return 0;
|
|
}
|
|
|
|
vdev->nb.notifier_call = vfio_fsl_mc_bus_notifier;
|
|
ret = bus_register_notifier(&fsl_mc_bus_type, &vdev->nb);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* open DPRC, allocate a MC portal */
|
|
ret = dprc_setup(mc_dev);
|
|
if (ret) {
|
|
dev_err(&mc_dev->dev, "VFIO_FSL_MC: Failed to setup DPRC (%d)\n", ret);
|
|
goto out_nc_unreg;
|
|
}
|
|
return 0;
|
|
|
|
out_nc_unreg:
|
|
bus_unregister_notifier(&fsl_mc_bus_type, &vdev->nb);
|
|
return ret;
|
|
}
|
|
|
|
static int vfio_fsl_mc_scan_container(struct fsl_mc_device *mc_dev)
|
|
{
|
|
int ret;
|
|
|
|
/* non dprc devices do not scan for other devices */
|
|
if (!is_fsl_mc_bus_dprc(mc_dev))
|
|
return 0;
|
|
ret = dprc_scan_container(mc_dev, false);
|
|
if (ret) {
|
|
dev_err(&mc_dev->dev,
|
|
"VFIO_FSL_MC: Container scanning failed (%d)\n", ret);
|
|
dprc_remove_devices(mc_dev, NULL, 0);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void vfio_fsl_uninit_device(struct vfio_fsl_mc_device *vdev)
|
|
{
|
|
struct fsl_mc_device *mc_dev = vdev->mc_dev;
|
|
|
|
if (!is_fsl_mc_bus_dprc(mc_dev))
|
|
return;
|
|
|
|
dprc_cleanup(mc_dev);
|
|
bus_unregister_notifier(&fsl_mc_bus_type, &vdev->nb);
|
|
}
|
|
|
|
static int vfio_fsl_mc_probe(struct fsl_mc_device *mc_dev)
|
|
{
|
|
struct iommu_group *group;
|
|
struct vfio_fsl_mc_device *vdev;
|
|
struct device *dev = &mc_dev->dev;
|
|
int ret;
|
|
|
|
group = vfio_iommu_group_get(dev);
|
|
if (!group) {
|
|
dev_err(dev, "VFIO_FSL_MC: No IOMMU group\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
|
|
if (!vdev) {
|
|
ret = -ENOMEM;
|
|
goto out_group_put;
|
|
}
|
|
|
|
vfio_init_group_dev(&vdev->vdev, dev, &vfio_fsl_mc_ops);
|
|
vdev->mc_dev = mc_dev;
|
|
mutex_init(&vdev->igate);
|
|
|
|
ret = vfio_fsl_mc_reflck_attach(vdev);
|
|
if (ret)
|
|
goto out_kfree;
|
|
|
|
ret = vfio_fsl_mc_init_device(vdev);
|
|
if (ret)
|
|
goto out_reflck;
|
|
|
|
ret = vfio_register_group_dev(&vdev->vdev);
|
|
if (ret) {
|
|
dev_err(dev, "VFIO_FSL_MC: Failed to add to vfio group\n");
|
|
goto out_device;
|
|
}
|
|
|
|
/*
|
|
* This triggers recursion into vfio_fsl_mc_probe() on another device
|
|
* and the vfio_fsl_mc_reflck_attach() must succeed, which relies on the
|
|
* vfio_add_group_dev() above. It has no impact on this vdev, so it is
|
|
* safe to be after the vfio device is made live.
|
|
*/
|
|
ret = vfio_fsl_mc_scan_container(mc_dev);
|
|
if (ret)
|
|
goto out_group_dev;
|
|
dev_set_drvdata(dev, vdev);
|
|
return 0;
|
|
|
|
out_group_dev:
|
|
vfio_unregister_group_dev(&vdev->vdev);
|
|
out_device:
|
|
vfio_fsl_uninit_device(vdev);
|
|
out_reflck:
|
|
vfio_fsl_mc_reflck_put(vdev->reflck);
|
|
out_kfree:
|
|
kfree(vdev);
|
|
out_group_put:
|
|
vfio_iommu_group_put(group, dev);
|
|
return ret;
|
|
}
|
|
|
|
static int vfio_fsl_mc_remove(struct fsl_mc_device *mc_dev)
|
|
{
|
|
struct device *dev = &mc_dev->dev;
|
|
struct vfio_fsl_mc_device *vdev = dev_get_drvdata(dev);
|
|
|
|
vfio_unregister_group_dev(&vdev->vdev);
|
|
mutex_destroy(&vdev->igate);
|
|
|
|
dprc_remove_devices(mc_dev, NULL, 0);
|
|
vfio_fsl_uninit_device(vdev);
|
|
vfio_fsl_mc_reflck_put(vdev->reflck);
|
|
|
|
kfree(vdev);
|
|
vfio_iommu_group_put(mc_dev->dev.iommu_group, dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct fsl_mc_driver vfio_fsl_mc_driver = {
|
|
.probe = vfio_fsl_mc_probe,
|
|
.remove = vfio_fsl_mc_remove,
|
|
.driver = {
|
|
.name = "vfio-fsl-mc",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init vfio_fsl_mc_driver_init(void)
|
|
{
|
|
return fsl_mc_driver_register(&vfio_fsl_mc_driver);
|
|
}
|
|
|
|
static void __exit vfio_fsl_mc_driver_exit(void)
|
|
{
|
|
fsl_mc_driver_unregister(&vfio_fsl_mc_driver);
|
|
}
|
|
|
|
module_init(vfio_fsl_mc_driver_init);
|
|
module_exit(vfio_fsl_mc_driver_exit);
|
|
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
|
MODULE_DESCRIPTION("VFIO for FSL-MC devices - User Level meta-driver");
|