668 lines
16 KiB
C
668 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* vDPA bridge driver for modern virtio-pci device
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*
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* Copyright (c) 2020, Red Hat Inc. All rights reserved.
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* Author: Jason Wang <jasowang@redhat.com>
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*
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* Based on virtio_pci_modern.c.
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*/
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/vdpa.h>
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#include <linux/virtio.h>
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#include <linux/virtio_config.h>
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#include <linux/virtio_ring.h>
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#include <linux/virtio_pci.h>
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#include <linux/virtio_pci_modern.h>
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#include <uapi/linux/vdpa.h>
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#define VP_VDPA_QUEUE_MAX 256
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#define VP_VDPA_DRIVER_NAME "vp_vdpa"
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#define VP_VDPA_NAME_SIZE 256
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struct vp_vring {
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void __iomem *notify;
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char msix_name[VP_VDPA_NAME_SIZE];
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struct vdpa_callback cb;
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resource_size_t notify_pa;
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int irq;
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};
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struct vp_vdpa {
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struct vdpa_device vdpa;
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struct virtio_pci_modern_device *mdev;
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struct vp_vring *vring;
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struct vdpa_callback config_cb;
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u64 device_features;
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char msix_name[VP_VDPA_NAME_SIZE];
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int config_irq;
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int queues;
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int vectors;
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};
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struct vp_vdpa_mgmtdev {
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struct vdpa_mgmt_dev mgtdev;
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struct virtio_pci_modern_device *mdev;
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struct vp_vdpa *vp_vdpa;
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};
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static struct vp_vdpa *vdpa_to_vp(struct vdpa_device *vdpa)
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{
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return container_of(vdpa, struct vp_vdpa, vdpa);
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}
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static struct virtio_pci_modern_device *vdpa_to_mdev(struct vdpa_device *vdpa)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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return vp_vdpa->mdev;
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}
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static struct virtio_pci_modern_device *vp_vdpa_to_mdev(struct vp_vdpa *vp_vdpa)
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{
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return vp_vdpa->mdev;
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}
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static u64 vp_vdpa_get_device_features(struct vdpa_device *vdpa)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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return vp_vdpa->device_features;
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}
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static int vp_vdpa_set_driver_features(struct vdpa_device *vdpa, u64 features)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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vp_modern_set_features(mdev, features);
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return 0;
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}
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static u64 vp_vdpa_get_driver_features(struct vdpa_device *vdpa)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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return vp_modern_get_driver_features(mdev);
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}
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static u8 vp_vdpa_get_status(struct vdpa_device *vdpa)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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return vp_modern_get_status(mdev);
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}
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static int vp_vdpa_get_vq_irq(struct vdpa_device *vdpa, u16 idx)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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int irq = vp_vdpa->vring[idx].irq;
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if (irq == VIRTIO_MSI_NO_VECTOR)
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return -EINVAL;
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return irq;
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}
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static void vp_vdpa_free_irq(struct vp_vdpa *vp_vdpa)
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{
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struct virtio_pci_modern_device *mdev = vp_vdpa_to_mdev(vp_vdpa);
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struct pci_dev *pdev = mdev->pci_dev;
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int i;
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for (i = 0; i < vp_vdpa->queues; i++) {
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if (vp_vdpa->vring[i].irq != VIRTIO_MSI_NO_VECTOR) {
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vp_modern_queue_vector(mdev, i, VIRTIO_MSI_NO_VECTOR);
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devm_free_irq(&pdev->dev, vp_vdpa->vring[i].irq,
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&vp_vdpa->vring[i]);
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vp_vdpa->vring[i].irq = VIRTIO_MSI_NO_VECTOR;
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}
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}
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if (vp_vdpa->config_irq != VIRTIO_MSI_NO_VECTOR) {
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vp_modern_config_vector(mdev, VIRTIO_MSI_NO_VECTOR);
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devm_free_irq(&pdev->dev, vp_vdpa->config_irq, vp_vdpa);
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vp_vdpa->config_irq = VIRTIO_MSI_NO_VECTOR;
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}
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if (vp_vdpa->vectors) {
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pci_free_irq_vectors(pdev);
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vp_vdpa->vectors = 0;
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}
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}
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static irqreturn_t vp_vdpa_vq_handler(int irq, void *arg)
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{
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struct vp_vring *vring = arg;
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if (vring->cb.callback)
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return vring->cb.callback(vring->cb.private);
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return IRQ_HANDLED;
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}
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static irqreturn_t vp_vdpa_config_handler(int irq, void *arg)
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{
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struct vp_vdpa *vp_vdpa = arg;
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if (vp_vdpa->config_cb.callback)
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return vp_vdpa->config_cb.callback(vp_vdpa->config_cb.private);
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return IRQ_HANDLED;
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}
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static int vp_vdpa_request_irq(struct vp_vdpa *vp_vdpa)
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{
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struct virtio_pci_modern_device *mdev = vp_vdpa_to_mdev(vp_vdpa);
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struct pci_dev *pdev = mdev->pci_dev;
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int i, ret, irq;
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int queues = vp_vdpa->queues;
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int vectors = queues + 1;
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ret = pci_alloc_irq_vectors(pdev, vectors, vectors, PCI_IRQ_MSIX);
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if (ret != vectors) {
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dev_err(&pdev->dev,
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"vp_vdpa: fail to allocate irq vectors want %d but %d\n",
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vectors, ret);
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return ret;
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}
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vp_vdpa->vectors = vectors;
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for (i = 0; i < queues; i++) {
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snprintf(vp_vdpa->vring[i].msix_name, VP_VDPA_NAME_SIZE,
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"vp-vdpa[%s]-%d\n", pci_name(pdev), i);
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irq = pci_irq_vector(pdev, i);
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ret = devm_request_irq(&pdev->dev, irq,
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vp_vdpa_vq_handler,
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0, vp_vdpa->vring[i].msix_name,
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&vp_vdpa->vring[i]);
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if (ret) {
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dev_err(&pdev->dev,
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"vp_vdpa: fail to request irq for vq %d\n", i);
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goto err;
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}
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vp_modern_queue_vector(mdev, i, i);
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vp_vdpa->vring[i].irq = irq;
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}
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snprintf(vp_vdpa->msix_name, VP_VDPA_NAME_SIZE, "vp-vdpa[%s]-config\n",
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pci_name(pdev));
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irq = pci_irq_vector(pdev, queues);
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ret = devm_request_irq(&pdev->dev, irq, vp_vdpa_config_handler, 0,
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vp_vdpa->msix_name, vp_vdpa);
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if (ret) {
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dev_err(&pdev->dev,
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"vp_vdpa: fail to request irq for vq %d\n", i);
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goto err;
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}
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vp_modern_config_vector(mdev, queues);
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vp_vdpa->config_irq = irq;
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return 0;
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err:
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vp_vdpa_free_irq(vp_vdpa);
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return ret;
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}
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static void vp_vdpa_set_status(struct vdpa_device *vdpa, u8 status)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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struct virtio_pci_modern_device *mdev = vp_vdpa_to_mdev(vp_vdpa);
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u8 s = vp_vdpa_get_status(vdpa);
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if (status & VIRTIO_CONFIG_S_DRIVER_OK &&
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!(s & VIRTIO_CONFIG_S_DRIVER_OK)) {
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vp_vdpa_request_irq(vp_vdpa);
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}
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vp_modern_set_status(mdev, status);
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}
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static int vp_vdpa_reset(struct vdpa_device *vdpa)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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struct virtio_pci_modern_device *mdev = vp_vdpa_to_mdev(vp_vdpa);
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u8 s = vp_vdpa_get_status(vdpa);
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vp_modern_set_status(mdev, 0);
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if (s & VIRTIO_CONFIG_S_DRIVER_OK)
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vp_vdpa_free_irq(vp_vdpa);
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return 0;
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}
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static u16 vp_vdpa_get_vq_num_max(struct vdpa_device *vdpa)
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{
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return VP_VDPA_QUEUE_MAX;
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}
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static int vp_vdpa_get_vq_state(struct vdpa_device *vdpa, u16 qid,
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struct vdpa_vq_state *state)
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{
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/* Note that this is not supported by virtio specification, so
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* we return -EOPNOTSUPP here. This means we can't support live
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* migration, vhost device start/stop.
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*/
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return -EOPNOTSUPP;
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}
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static int vp_vdpa_set_vq_state_split(struct vdpa_device *vdpa,
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const struct vdpa_vq_state *state)
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{
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const struct vdpa_vq_state_split *split = &state->split;
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if (split->avail_index == 0)
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return 0;
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return -EOPNOTSUPP;
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}
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static int vp_vdpa_set_vq_state_packed(struct vdpa_device *vdpa,
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const struct vdpa_vq_state *state)
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{
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const struct vdpa_vq_state_packed *packed = &state->packed;
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if (packed->last_avail_counter == 1 &&
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packed->last_avail_idx == 0 &&
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packed->last_used_counter == 1 &&
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packed->last_used_idx == 0)
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return 0;
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return -EOPNOTSUPP;
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}
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static int vp_vdpa_set_vq_state(struct vdpa_device *vdpa, u16 qid,
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const struct vdpa_vq_state *state)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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/* Note that this is not supported by virtio specification.
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* But if the state is by chance equal to the device initial
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* state, we can let it go.
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*/
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if ((vp_modern_get_status(mdev) & VIRTIO_CONFIG_S_FEATURES_OK) &&
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!vp_modern_get_queue_enable(mdev, qid)) {
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if (vp_modern_get_driver_features(mdev) &
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BIT_ULL(VIRTIO_F_RING_PACKED))
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return vp_vdpa_set_vq_state_packed(vdpa, state);
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else
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return vp_vdpa_set_vq_state_split(vdpa, state);
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}
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return -EOPNOTSUPP;
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}
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static void vp_vdpa_set_vq_cb(struct vdpa_device *vdpa, u16 qid,
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struct vdpa_callback *cb)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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vp_vdpa->vring[qid].cb = *cb;
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}
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static void vp_vdpa_set_vq_ready(struct vdpa_device *vdpa,
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u16 qid, bool ready)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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vp_modern_set_queue_enable(mdev, qid, ready);
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}
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static bool vp_vdpa_get_vq_ready(struct vdpa_device *vdpa, u16 qid)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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return vp_modern_get_queue_enable(mdev, qid);
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}
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static void vp_vdpa_set_vq_num(struct vdpa_device *vdpa, u16 qid,
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u32 num)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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vp_modern_set_queue_size(mdev, qid, num);
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}
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static int vp_vdpa_set_vq_address(struct vdpa_device *vdpa, u16 qid,
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u64 desc_area, u64 driver_area,
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u64 device_area)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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vp_modern_queue_address(mdev, qid, desc_area,
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driver_area, device_area);
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return 0;
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}
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static void vp_vdpa_kick_vq(struct vdpa_device *vdpa, u16 qid)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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vp_iowrite16(qid, vp_vdpa->vring[qid].notify);
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}
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static u32 vp_vdpa_get_generation(struct vdpa_device *vdpa)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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return vp_modern_generation(mdev);
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}
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static u32 vp_vdpa_get_device_id(struct vdpa_device *vdpa)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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return mdev->id.device;
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}
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static u32 vp_vdpa_get_vendor_id(struct vdpa_device *vdpa)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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return mdev->id.vendor;
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}
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static u32 vp_vdpa_get_vq_align(struct vdpa_device *vdpa)
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{
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return PAGE_SIZE;
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}
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static size_t vp_vdpa_get_config_size(struct vdpa_device *vdpa)
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{
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struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
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return mdev->device_len;
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}
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static void vp_vdpa_get_config(struct vdpa_device *vdpa,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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struct virtio_pci_modern_device *mdev = vp_vdpa_to_mdev(vp_vdpa);
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u8 old, new;
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u8 *p;
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int i;
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do {
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old = vp_ioread8(&mdev->common->config_generation);
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p = buf;
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for (i = 0; i < len; i++)
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*p++ = vp_ioread8(mdev->device + offset + i);
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new = vp_ioread8(&mdev->common->config_generation);
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} while (old != new);
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}
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static void vp_vdpa_set_config(struct vdpa_device *vdpa,
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unsigned int offset, const void *buf,
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unsigned int len)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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struct virtio_pci_modern_device *mdev = vp_vdpa_to_mdev(vp_vdpa);
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const u8 *p = buf;
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int i;
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for (i = 0; i < len; i++)
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vp_iowrite8(*p++, mdev->device + offset + i);
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}
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static void vp_vdpa_set_config_cb(struct vdpa_device *vdpa,
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struct vdpa_callback *cb)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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vp_vdpa->config_cb = *cb;
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}
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static struct vdpa_notification_area
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vp_vdpa_get_vq_notification(struct vdpa_device *vdpa, u16 qid)
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{
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struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
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struct virtio_pci_modern_device *mdev = vp_vdpa_to_mdev(vp_vdpa);
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struct vdpa_notification_area notify;
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notify.addr = vp_vdpa->vring[qid].notify_pa;
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notify.size = mdev->notify_offset_multiplier;
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return notify;
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}
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static const struct vdpa_config_ops vp_vdpa_ops = {
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.get_device_features = vp_vdpa_get_device_features,
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.set_driver_features = vp_vdpa_set_driver_features,
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.get_driver_features = vp_vdpa_get_driver_features,
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.get_status = vp_vdpa_get_status,
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.set_status = vp_vdpa_set_status,
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.reset = vp_vdpa_reset,
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.get_vq_num_max = vp_vdpa_get_vq_num_max,
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.get_vq_state = vp_vdpa_get_vq_state,
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.get_vq_notification = vp_vdpa_get_vq_notification,
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.set_vq_state = vp_vdpa_set_vq_state,
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.set_vq_cb = vp_vdpa_set_vq_cb,
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.set_vq_ready = vp_vdpa_set_vq_ready,
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.get_vq_ready = vp_vdpa_get_vq_ready,
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.set_vq_num = vp_vdpa_set_vq_num,
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.set_vq_address = vp_vdpa_set_vq_address,
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.kick_vq = vp_vdpa_kick_vq,
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.get_generation = vp_vdpa_get_generation,
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.get_device_id = vp_vdpa_get_device_id,
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.get_vendor_id = vp_vdpa_get_vendor_id,
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.get_vq_align = vp_vdpa_get_vq_align,
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.get_config_size = vp_vdpa_get_config_size,
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.get_config = vp_vdpa_get_config,
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.set_config = vp_vdpa_set_config,
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.set_config_cb = vp_vdpa_set_config_cb,
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.get_vq_irq = vp_vdpa_get_vq_irq,
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};
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static void vp_vdpa_free_irq_vectors(void *data)
|
|
{
|
|
pci_free_irq_vectors(data);
|
|
}
|
|
|
|
static int vp_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev, const char *name,
|
|
const struct vdpa_dev_set_config *add_config)
|
|
{
|
|
struct vp_vdpa_mgmtdev *vp_vdpa_mgtdev =
|
|
container_of(v_mdev, struct vp_vdpa_mgmtdev, mgtdev);
|
|
|
|
struct virtio_pci_modern_device *mdev = vp_vdpa_mgtdev->mdev;
|
|
struct pci_dev *pdev = mdev->pci_dev;
|
|
struct device *dev = &pdev->dev;
|
|
struct vp_vdpa *vp_vdpa = NULL;
|
|
u64 device_features;
|
|
int ret, i;
|
|
|
|
vp_vdpa = vdpa_alloc_device(struct vp_vdpa, vdpa,
|
|
dev, &vp_vdpa_ops, 1, 1, name, false);
|
|
|
|
if (IS_ERR(vp_vdpa)) {
|
|
dev_err(dev, "vp_vdpa: Failed to allocate vDPA structure\n");
|
|
return PTR_ERR(vp_vdpa);
|
|
}
|
|
|
|
vp_vdpa_mgtdev->vp_vdpa = vp_vdpa;
|
|
|
|
vp_vdpa->vdpa.dma_dev = &pdev->dev;
|
|
vp_vdpa->queues = vp_modern_get_num_queues(mdev);
|
|
vp_vdpa->mdev = mdev;
|
|
|
|
device_features = vp_modern_get_features(mdev);
|
|
if (add_config->mask & BIT_ULL(VDPA_ATTR_DEV_FEATURES)) {
|
|
if (add_config->device_features & ~device_features) {
|
|
ret = -EINVAL;
|
|
dev_err(&pdev->dev, "Try to provision features "
|
|
"that are not supported by the device: "
|
|
"device_features 0x%llx provisioned 0x%llx\n",
|
|
device_features, add_config->device_features);
|
|
goto err;
|
|
}
|
|
device_features = add_config->device_features;
|
|
}
|
|
vp_vdpa->device_features = device_features;
|
|
|
|
ret = devm_add_action_or_reset(dev, vp_vdpa_free_irq_vectors, pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev,
|
|
"Failed for adding devres for freeing irq vectors\n");
|
|
goto err;
|
|
}
|
|
|
|
vp_vdpa->vring = devm_kcalloc(&pdev->dev, vp_vdpa->queues,
|
|
sizeof(*vp_vdpa->vring),
|
|
GFP_KERNEL);
|
|
if (!vp_vdpa->vring) {
|
|
ret = -ENOMEM;
|
|
dev_err(&pdev->dev, "Fail to allocate virtqueues\n");
|
|
goto err;
|
|
}
|
|
|
|
for (i = 0; i < vp_vdpa->queues; i++) {
|
|
vp_vdpa->vring[i].irq = VIRTIO_MSI_NO_VECTOR;
|
|
vp_vdpa->vring[i].notify =
|
|
vp_modern_map_vq_notify(mdev, i,
|
|
&vp_vdpa->vring[i].notify_pa);
|
|
if (!vp_vdpa->vring[i].notify) {
|
|
ret = -EINVAL;
|
|
dev_warn(&pdev->dev, "Fail to map vq notify %d\n", i);
|
|
goto err;
|
|
}
|
|
}
|
|
vp_vdpa->config_irq = VIRTIO_MSI_NO_VECTOR;
|
|
|
|
vp_vdpa->vdpa.mdev = &vp_vdpa_mgtdev->mgtdev;
|
|
ret = _vdpa_register_device(&vp_vdpa->vdpa, vp_vdpa->queues);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Failed to register to vdpa bus\n");
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
put_device(&vp_vdpa->vdpa.dev);
|
|
return ret;
|
|
}
|
|
|
|
static void vp_vdpa_dev_del(struct vdpa_mgmt_dev *v_mdev,
|
|
struct vdpa_device *dev)
|
|
{
|
|
struct vp_vdpa_mgmtdev *vp_vdpa_mgtdev =
|
|
container_of(v_mdev, struct vp_vdpa_mgmtdev, mgtdev);
|
|
|
|
struct vp_vdpa *vp_vdpa = vp_vdpa_mgtdev->vp_vdpa;
|
|
|
|
_vdpa_unregister_device(&vp_vdpa->vdpa);
|
|
vp_vdpa_mgtdev->vp_vdpa = NULL;
|
|
}
|
|
|
|
static const struct vdpa_mgmtdev_ops vp_vdpa_mdev_ops = {
|
|
.dev_add = vp_vdpa_dev_add,
|
|
.dev_del = vp_vdpa_dev_del,
|
|
};
|
|
|
|
static int vp_vdpa_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
struct vp_vdpa_mgmtdev *vp_vdpa_mgtdev = NULL;
|
|
struct vdpa_mgmt_dev *mgtdev;
|
|
struct device *dev = &pdev->dev;
|
|
struct virtio_pci_modern_device *mdev = NULL;
|
|
struct virtio_device_id *mdev_id = NULL;
|
|
int err;
|
|
|
|
vp_vdpa_mgtdev = kzalloc(sizeof(*vp_vdpa_mgtdev), GFP_KERNEL);
|
|
if (!vp_vdpa_mgtdev)
|
|
return -ENOMEM;
|
|
|
|
mgtdev = &vp_vdpa_mgtdev->mgtdev;
|
|
mgtdev->ops = &vp_vdpa_mdev_ops;
|
|
mgtdev->device = dev;
|
|
|
|
mdev = kzalloc(sizeof(struct virtio_pci_modern_device), GFP_KERNEL);
|
|
if (!mdev) {
|
|
err = -ENOMEM;
|
|
goto mdev_err;
|
|
}
|
|
|
|
mdev_id = kzalloc(sizeof(struct virtio_device_id), GFP_KERNEL);
|
|
if (!mdev_id) {
|
|
err = -ENOMEM;
|
|
goto mdev_id_err;
|
|
}
|
|
|
|
vp_vdpa_mgtdev->mdev = mdev;
|
|
mdev->pci_dev = pdev;
|
|
|
|
err = pcim_enable_device(pdev);
|
|
if (err) {
|
|
goto probe_err;
|
|
}
|
|
|
|
err = vp_modern_probe(mdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Failed to probe modern PCI device\n");
|
|
goto probe_err;
|
|
}
|
|
|
|
mdev_id->device = mdev->id.device;
|
|
mdev_id->vendor = mdev->id.vendor;
|
|
mgtdev->id_table = mdev_id;
|
|
mgtdev->max_supported_vqs = vp_modern_get_num_queues(mdev);
|
|
mgtdev->supported_features = vp_modern_get_features(mdev);
|
|
mgtdev->config_attr_mask = (1 << VDPA_ATTR_DEV_FEATURES);
|
|
pci_set_master(pdev);
|
|
pci_set_drvdata(pdev, vp_vdpa_mgtdev);
|
|
|
|
err = vdpa_mgmtdev_register(mgtdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Failed to register vdpa mgmtdev device\n");
|
|
goto register_err;
|
|
}
|
|
|
|
return 0;
|
|
|
|
register_err:
|
|
vp_modern_remove(vp_vdpa_mgtdev->mdev);
|
|
probe_err:
|
|
kfree(mdev_id);
|
|
mdev_id_err:
|
|
kfree(mdev);
|
|
mdev_err:
|
|
kfree(vp_vdpa_mgtdev);
|
|
return err;
|
|
}
|
|
|
|
static void vp_vdpa_remove(struct pci_dev *pdev)
|
|
{
|
|
struct vp_vdpa_mgmtdev *vp_vdpa_mgtdev = pci_get_drvdata(pdev);
|
|
struct virtio_pci_modern_device *mdev = NULL;
|
|
|
|
mdev = vp_vdpa_mgtdev->mdev;
|
|
vdpa_mgmtdev_unregister(&vp_vdpa_mgtdev->mgtdev);
|
|
vp_modern_remove(mdev);
|
|
kfree(vp_vdpa_mgtdev->mgtdev.id_table);
|
|
kfree(mdev);
|
|
kfree(vp_vdpa_mgtdev);
|
|
}
|
|
|
|
static struct pci_driver vp_vdpa_driver = {
|
|
.name = "vp-vdpa",
|
|
.id_table = NULL, /* only dynamic ids */
|
|
.probe = vp_vdpa_probe,
|
|
.remove = vp_vdpa_remove,
|
|
};
|
|
|
|
module_pci_driver(vp_vdpa_driver);
|
|
|
|
MODULE_AUTHOR("Jason Wang <jasowang@redhat.com>");
|
|
MODULE_DESCRIPTION("vp-vdpa");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION("1");
|