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vfio/pci: Split the pci_driver code out of vfio_pci_core.c
Split the vfio_pci driver into two logical parts, the 'struct pci_driver' (vfio_pci.c) which implements "Generic VFIO support for any PCI device" and a library of code (vfio_pci_core.c) that helps implementing a struct vfio_device on top of a PCI device. vfio_pci.ko continues to present the same interface under sysfs and this change should have no functional impact. Following patches will turn vfio_pci and vfio_pci_core into a separate module. This is a preparation for allowing another module to provide the pci_driver and allow that module to customize how VFIO is setup, inject its own operations, and easily extend vendor specific functionality. At this point the vfio_pci_core still contains a lot of vfio_pci functionality mixed into it. Following patches will move more of the large scale items out, but another cleanup series will be needed to get everything. Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Link: https://lore.kernel.org/r/20210826103912.128972-7-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Max Gurtovoy
Alex Williamson
parent
c39f8fa76c
commit
ff53edf6d6
4 changed files with 304 additions and 215 deletions
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@ -1,6 +1,6 @@
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# SPDX-License-Identifier: GPL-2.0-only
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vfio-pci-y := vfio_pci_core.o vfio_pci_intrs.o vfio_pci_rdwr.o vfio_pci_config.o
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vfio-pci-y := vfio_pci.o vfio_pci_core.o vfio_pci_intrs.o vfio_pci_rdwr.o vfio_pci_config.o
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vfio-pci-$(CONFIG_VFIO_PCI_IGD) += vfio_pci_igd.o
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vfio-pci-$(CONFIG_S390) += vfio_pci_zdev.o
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223
drivers/vfio/pci/vfio_pci.c
Normal file
223
drivers/vfio/pci/vfio_pci.c
Normal file
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@ -0,0 +1,223 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved
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*
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* Copyright (C) 2012 Red Hat, Inc. All rights reserved.
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* Author: Alex Williamson <alex.williamson@redhat.com>
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*
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* Derived from original vfio:
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* Copyright 2010 Cisco Systems, Inc. All rights reserved.
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* Author: Tom Lyon, pugs@cisco.com
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/device.h>
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#include <linux/eventfd.h>
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#include <linux/file.h>
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#include <linux/interrupt.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/notifier.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/uaccess.h>
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#include "vfio_pci_core.h"
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#define DRIVER_AUTHOR "Alex Williamson <alex.williamson@redhat.com>"
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#define DRIVER_DESC "VFIO PCI - User Level meta-driver"
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static char ids[1024] __initdata;
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module_param_string(ids, ids, sizeof(ids), 0);
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MODULE_PARM_DESC(ids, "Initial PCI IDs to add to the vfio driver, format is \"vendor:device[:subvendor[:subdevice[:class[:class_mask]]]]\" and multiple comma separated entries can be specified");
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static bool enable_sriov;
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#ifdef CONFIG_PCI_IOV
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module_param(enable_sriov, bool, 0644);
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MODULE_PARM_DESC(enable_sriov, "Enable support for SR-IOV configuration. Enabling SR-IOV on a PF typically requires support of the userspace PF driver, enabling VFs without such support may result in non-functional VFs or PF.");
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#endif
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static bool disable_denylist;
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module_param(disable_denylist, bool, 0444);
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MODULE_PARM_DESC(disable_denylist, "Disable use of device denylist. Disabling the denylist allows binding to devices with known errata that may lead to exploitable stability or security issues when accessed by untrusted users.");
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static bool vfio_pci_dev_in_denylist(struct pci_dev *pdev)
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{
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switch (pdev->vendor) {
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case PCI_VENDOR_ID_INTEL:
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switch (pdev->device) {
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case PCI_DEVICE_ID_INTEL_QAT_C3XXX:
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case PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF:
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case PCI_DEVICE_ID_INTEL_QAT_C62X:
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case PCI_DEVICE_ID_INTEL_QAT_C62X_VF:
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case PCI_DEVICE_ID_INTEL_QAT_DH895XCC:
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case PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF:
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return true;
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default:
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return false;
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}
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}
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return false;
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}
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static bool vfio_pci_is_denylisted(struct pci_dev *pdev)
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{
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if (!vfio_pci_dev_in_denylist(pdev))
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return false;
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if (disable_denylist) {
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pci_warn(pdev,
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"device denylist disabled - allowing device %04x:%04x.\n",
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pdev->vendor, pdev->device);
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return false;
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}
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pci_warn(pdev, "%04x:%04x exists in vfio-pci device denylist, driver probing disallowed.\n",
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pdev->vendor, pdev->device);
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return true;
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}
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static const struct vfio_device_ops vfio_pci_ops = {
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.name = "vfio-pci",
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.open_device = vfio_pci_core_open_device,
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.close_device = vfio_pci_core_close_device,
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.ioctl = vfio_pci_core_ioctl,
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.read = vfio_pci_core_read,
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.write = vfio_pci_core_write,
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.mmap = vfio_pci_core_mmap,
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.request = vfio_pci_core_request,
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.match = vfio_pci_core_match,
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};
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static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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struct vfio_pci_core_device *vdev;
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int ret;
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if (vfio_pci_is_denylisted(pdev))
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return -EINVAL;
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vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
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if (!vdev)
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return -ENOMEM;
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vfio_pci_core_init_device(vdev, pdev, &vfio_pci_ops);
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ret = vfio_pci_core_register_device(vdev);
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if (ret)
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goto out_free;
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return 0;
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out_free:
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vfio_pci_core_uninit_device(vdev);
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kfree(vdev);
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return ret;
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}
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static void vfio_pci_remove(struct pci_dev *pdev)
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{
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struct vfio_pci_core_device *vdev = dev_get_drvdata(&pdev->dev);
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vfio_pci_core_unregister_device(vdev);
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vfio_pci_core_uninit_device(vdev);
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kfree(vdev);
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}
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static int vfio_pci_sriov_configure(struct pci_dev *pdev, int nr_virtfn)
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{
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if (!enable_sriov)
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return -ENOENT;
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return vfio_pci_core_sriov_configure(pdev, nr_virtfn);
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}
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static struct pci_driver vfio_pci_driver = {
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.name = "vfio-pci",
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.id_table = NULL, /* only dynamic ids */
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.probe = vfio_pci_probe,
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.remove = vfio_pci_remove,
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.sriov_configure = vfio_pci_sriov_configure,
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.err_handler = &vfio_pci_core_err_handlers,
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};
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static void __init vfio_pci_fill_ids(void)
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{
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char *p, *id;
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int rc;
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/* no ids passed actually */
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if (ids[0] == '\0')
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return;
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/* add ids specified in the module parameter */
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p = ids;
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while ((id = strsep(&p, ","))) {
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unsigned int vendor, device, subvendor = PCI_ANY_ID,
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subdevice = PCI_ANY_ID, class = 0, class_mask = 0;
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int fields;
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if (!strlen(id))
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continue;
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fields = sscanf(id, "%x:%x:%x:%x:%x:%x",
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&vendor, &device, &subvendor, &subdevice,
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&class, &class_mask);
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if (fields < 2) {
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pr_warn("invalid id string \"%s\"\n", id);
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continue;
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}
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rc = pci_add_dynid(&vfio_pci_driver, vendor, device,
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subvendor, subdevice, class, class_mask, 0);
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if (rc)
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pr_warn("failed to add dynamic id [%04x:%04x[%04x:%04x]] class %#08x/%08x (%d)\n",
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vendor, device, subvendor, subdevice,
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class, class_mask, rc);
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else
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pr_info("add [%04x:%04x[%04x:%04x]] class %#08x/%08x\n",
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vendor, device, subvendor, subdevice,
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class, class_mask);
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}
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}
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static int __init vfio_pci_init(void)
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{
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int ret;
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ret = vfio_pci_core_init();
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if (ret)
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return ret;
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/* Register and scan for devices */
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ret = pci_register_driver(&vfio_pci_driver);
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if (ret)
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goto out;
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vfio_pci_fill_ids();
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if (disable_denylist)
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pr_warn("device denylist disabled.\n");
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return 0;
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out:
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vfio_pci_core_cleanup();
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return ret;
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}
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module_init(vfio_pci_init);
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static void __exit vfio_pci_cleanup(void)
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{
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pci_unregister_driver(&vfio_pci_driver);
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vfio_pci_core_cleanup();
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}
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module_exit(vfio_pci_cleanup);
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MODULE_LICENSE("GPL v2");
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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@ -8,8 +8,6 @@
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* Author: Tom Lyon, pugs@cisco.com
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/device.h>
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#include <linux/eventfd.h>
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#include <linux/file.h>
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@ -29,14 +27,6 @@
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#include "vfio_pci_core.h"
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#define DRIVER_VERSION "0.2"
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#define DRIVER_AUTHOR "Alex Williamson <alex.williamson@redhat.com>"
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#define DRIVER_DESC "VFIO PCI - User Level meta-driver"
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static char ids[1024] __initdata;
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module_param_string(ids, ids, sizeof(ids), 0);
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MODULE_PARM_DESC(ids, "Initial PCI IDs to add to the vfio driver, format is \"vendor:device[:subvendor[:subdevice[:class[:class_mask]]]]\" and multiple comma separated entries can be specified");
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static bool nointxmask;
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module_param_named(nointxmask, nointxmask, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(nointxmask,
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@ -53,16 +43,6 @@ module_param(disable_idle_d3, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(disable_idle_d3,
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"Disable using the PCI D3 low power state for idle, unused devices");
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static bool enable_sriov;
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#ifdef CONFIG_PCI_IOV
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module_param(enable_sriov, bool, 0644);
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MODULE_PARM_DESC(enable_sriov, "Enable support for SR-IOV configuration. Enabling SR-IOV on a PF typically requires support of the userspace PF driver, enabling VFs without such support may result in non-functional VFs or PF.");
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#endif
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static bool disable_denylist;
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module_param(disable_denylist, bool, 0444);
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MODULE_PARM_DESC(disable_denylist, "Disable use of device denylist. Disabling the denylist allows binding to devices with known errata that may lead to exploitable stability or security issues when accessed by untrusted users.");
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static inline bool vfio_vga_disabled(void)
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{
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#ifdef CONFIG_VFIO_PCI_VGA
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@ -72,44 +52,6 @@ static inline bool vfio_vga_disabled(void)
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#endif
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}
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static bool vfio_pci_dev_in_denylist(struct pci_dev *pdev)
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{
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switch (pdev->vendor) {
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case PCI_VENDOR_ID_INTEL:
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switch (pdev->device) {
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case PCI_DEVICE_ID_INTEL_QAT_C3XXX:
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case PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF:
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case PCI_DEVICE_ID_INTEL_QAT_C62X:
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case PCI_DEVICE_ID_INTEL_QAT_C62X_VF:
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case PCI_DEVICE_ID_INTEL_QAT_DH895XCC:
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case PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF:
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return true;
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default:
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return false;
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}
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}
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return false;
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}
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static bool vfio_pci_is_denylisted(struct pci_dev *pdev)
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{
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if (!vfio_pci_dev_in_denylist(pdev))
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return false;
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if (disable_denylist) {
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pci_warn(pdev,
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"device denylist disabled - allowing device %04x:%04x.\n",
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pdev->vendor, pdev->device);
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return false;
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}
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pci_warn(pdev, "%04x:%04x exists in vfio-pci device denylist, driver probing disallowed.\n",
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pdev->vendor, pdev->device);
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return true;
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}
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/*
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* Our VGA arbiter participation is limited since we don't know anything
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* about the device itself. However, if the device is the only VGA device
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@ -495,8 +437,6 @@ static void vfio_pci_disable(struct vfio_pci_core_device *vdev)
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vfio_pci_set_power_state(vdev, PCI_D3hot);
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}
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static struct pci_driver vfio_pci_driver;
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static struct vfio_pci_core_device *get_pf_vdev(struct vfio_pci_core_device *vdev)
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{
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struct pci_dev *physfn = pci_physfn(vdev->pdev);
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@ -509,7 +449,7 @@ static struct vfio_pci_core_device *get_pf_vdev(struct vfio_pci_core_device *vde
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if (!pf_dev)
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return NULL;
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if (pci_dev_driver(physfn) != &vfio_pci_driver) {
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if (pci_dev_driver(physfn) != pci_dev_driver(vdev->pdev)) {
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vfio_device_put(pf_dev);
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return NULL;
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}
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@ -532,7 +472,7 @@ static void vfio_pci_vf_token_user_add(struct vfio_pci_core_device *vdev, int va
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vfio_device_put(&pf_vdev->vdev);
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}
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static void vfio_pci_core_close_device(struct vfio_device *core_vdev)
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void vfio_pci_core_close_device(struct vfio_device *core_vdev)
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{
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struct vfio_pci_core_device *vdev =
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container_of(core_vdev, struct vfio_pci_core_device, vdev);
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@ -553,7 +493,7 @@ static void vfio_pci_core_close_device(struct vfio_device *core_vdev)
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mutex_unlock(&vdev->igate);
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}
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static int vfio_pci_core_open_device(struct vfio_device *core_vdev)
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int vfio_pci_core_open_device(struct vfio_device *core_vdev)
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{
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struct vfio_pci_core_device *vdev =
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container_of(core_vdev, struct vfio_pci_core_device, vdev);
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@ -726,8 +666,8 @@ int vfio_pci_register_dev_region(struct vfio_pci_core_device *vdev,
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return 0;
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}
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static long vfio_pci_core_ioctl(struct vfio_device *core_vdev,
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unsigned int cmd, unsigned long arg)
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long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd,
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unsigned long arg)
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{
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struct vfio_pci_core_device *vdev =
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container_of(core_vdev, struct vfio_pci_core_device, vdev);
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@ -1301,8 +1241,8 @@ static ssize_t vfio_pci_rw(struct vfio_pci_core_device *vdev, char __user *buf,
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return -EINVAL;
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}
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static ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *buf,
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size_t count, loff_t *ppos)
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ssize_t vfio_pci_core_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_pci_core_device *vdev =
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container_of(core_vdev, struct vfio_pci_core_device, vdev);
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@ -1313,8 +1253,8 @@ static ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *bu
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return vfio_pci_rw(vdev, buf, count, ppos, false);
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}
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static ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf,
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size_t count, loff_t *ppos)
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ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf,
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size_t count, loff_t *ppos)
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{
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struct vfio_pci_core_device *vdev =
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container_of(core_vdev, struct vfio_pci_core_device, vdev);
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@ -1532,7 +1472,7 @@ static const struct vm_operations_struct vfio_pci_mmap_ops = {
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.fault = vfio_pci_mmap_fault,
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};
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static int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma)
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int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma)
|
||||
{
|
||||
struct vfio_pci_core_device *vdev =
|
||||
container_of(core_vdev, struct vfio_pci_core_device, vdev);
|
||||
|
|
@ -1603,7 +1543,7 @@ static int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_stru
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count)
|
||||
void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count)
|
||||
{
|
||||
struct vfio_pci_core_device *vdev =
|
||||
container_of(core_vdev, struct vfio_pci_core_device, vdev);
|
||||
|
|
@ -1719,7 +1659,7 @@ static int vfio_pci_validate_vf_token(struct vfio_pci_core_device *vdev,
|
|||
|
||||
#define VF_TOKEN_ARG "vf_token="
|
||||
|
||||
static int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf)
|
||||
int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf)
|
||||
{
|
||||
struct vfio_pci_core_device *vdev =
|
||||
container_of(core_vdev, struct vfio_pci_core_device, vdev);
|
||||
|
|
@ -1769,18 +1709,6 @@ static int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf)
|
|||
return 1; /* Match */
|
||||
}
|
||||
|
||||
static const struct vfio_device_ops vfio_pci_ops = {
|
||||
.name = "vfio-pci",
|
||||
.open_device = vfio_pci_core_open_device,
|
||||
.close_device = vfio_pci_core_close_device,
|
||||
.ioctl = vfio_pci_core_ioctl,
|
||||
.read = vfio_pci_core_read,
|
||||
.write = vfio_pci_core_write,
|
||||
.mmap = vfio_pci_core_mmap,
|
||||
.request = vfio_pci_core_request,
|
||||
.match = vfio_pci_core_match,
|
||||
};
|
||||
|
||||
static int vfio_pci_bus_notifier(struct notifier_block *nb,
|
||||
unsigned long action, void *data)
|
||||
{
|
||||
|
|
@ -1795,15 +1723,16 @@ static int vfio_pci_bus_notifier(struct notifier_block *nb,
|
|||
pci_info(vdev->pdev, "Captured SR-IOV VF %s driver_override\n",
|
||||
pci_name(pdev));
|
||||
pdev->driver_override = kasprintf(GFP_KERNEL, "%s",
|
||||
vfio_pci_ops.name);
|
||||
vdev->vdev.ops->name);
|
||||
} else if (action == BUS_NOTIFY_BOUND_DRIVER &&
|
||||
pdev->is_virtfn && physfn == vdev->pdev) {
|
||||
struct pci_driver *drv = pci_dev_driver(pdev);
|
||||
|
||||
if (drv && drv != &vfio_pci_driver)
|
||||
if (drv && drv != pci_dev_driver(vdev->pdev))
|
||||
pci_warn(vdev->pdev,
|
||||
"VF %s bound to driver %s while PF bound to vfio-pci\n",
|
||||
pci_name(pdev), drv->name);
|
||||
"VF %s bound to driver %s while PF bound to driver %s\n",
|
||||
pci_name(pdev), drv->name,
|
||||
pci_dev_driver(vdev->pdev)->name);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
|
@ -1871,15 +1800,39 @@ static void vfio_pci_vga_uninit(struct vfio_pci_core_device *vdev)
|
|||
VGA_RSRC_LEGACY_MEM);
|
||||
}
|
||||
|
||||
static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
||||
void vfio_pci_core_init_device(struct vfio_pci_core_device *vdev,
|
||||
struct pci_dev *pdev,
|
||||
const struct vfio_device_ops *vfio_pci_ops)
|
||||
{
|
||||
struct vfio_pci_core_device *vdev;
|
||||
vfio_init_group_dev(&vdev->vdev, &pdev->dev, vfio_pci_ops);
|
||||
vdev->pdev = pdev;
|
||||
vdev->irq_type = VFIO_PCI_NUM_IRQS;
|
||||
mutex_init(&vdev->igate);
|
||||
spin_lock_init(&vdev->irqlock);
|
||||
mutex_init(&vdev->ioeventfds_lock);
|
||||
INIT_LIST_HEAD(&vdev->dummy_resources_list);
|
||||
INIT_LIST_HEAD(&vdev->ioeventfds_list);
|
||||
mutex_init(&vdev->vma_lock);
|
||||
INIT_LIST_HEAD(&vdev->vma_list);
|
||||
init_rwsem(&vdev->memory_lock);
|
||||
}
|
||||
|
||||
void vfio_pci_core_uninit_device(struct vfio_pci_core_device *vdev)
|
||||
{
|
||||
mutex_destroy(&vdev->igate);
|
||||
mutex_destroy(&vdev->ioeventfds_lock);
|
||||
mutex_destroy(&vdev->vma_lock);
|
||||
vfio_uninit_group_dev(&vdev->vdev);
|
||||
kfree(vdev->region);
|
||||
kfree(vdev->pm_save);
|
||||
}
|
||||
|
||||
int vfio_pci_core_register_device(struct vfio_pci_core_device *vdev)
|
||||
{
|
||||
struct pci_dev *pdev = vdev->pdev;
|
||||
struct iommu_group *group;
|
||||
int ret;
|
||||
|
||||
if (vfio_pci_is_denylisted(pdev))
|
||||
return -EINVAL;
|
||||
|
||||
if (pdev->hdr_type != PCI_HEADER_TYPE_NORMAL)
|
||||
return -EINVAL;
|
||||
|
||||
|
|
@ -1900,24 +1853,6 @@ static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|||
if (!group)
|
||||
return -EINVAL;
|
||||
|
||||
vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
|
||||
if (!vdev) {
|
||||
ret = -ENOMEM;
|
||||
goto out_group_put;
|
||||
}
|
||||
|
||||
vfio_init_group_dev(&vdev->vdev, &pdev->dev, &vfio_pci_ops);
|
||||
vdev->pdev = pdev;
|
||||
vdev->irq_type = VFIO_PCI_NUM_IRQS;
|
||||
mutex_init(&vdev->igate);
|
||||
spin_lock_init(&vdev->irqlock);
|
||||
mutex_init(&vdev->ioeventfds_lock);
|
||||
INIT_LIST_HEAD(&vdev->dummy_resources_list);
|
||||
INIT_LIST_HEAD(&vdev->ioeventfds_list);
|
||||
mutex_init(&vdev->vma_lock);
|
||||
INIT_LIST_HEAD(&vdev->vma_list);
|
||||
init_rwsem(&vdev->memory_lock);
|
||||
|
||||
if (pci_is_root_bus(pdev->bus)) {
|
||||
ret = vfio_assign_device_set(&vdev->vdev, vdev);
|
||||
} else if (!pci_probe_reset_slot(pdev->slot)) {
|
||||
|
|
@ -1931,10 +1866,10 @@ static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|||
}
|
||||
|
||||
if (ret)
|
||||
goto out_uninit;
|
||||
goto out_group_put;
|
||||
ret = vfio_pci_vf_init(vdev);
|
||||
if (ret)
|
||||
goto out_uninit;
|
||||
goto out_group_put;
|
||||
ret = vfio_pci_vga_init(vdev);
|
||||
if (ret)
|
||||
goto out_vf;
|
||||
|
|
@ -1966,36 +1901,26 @@ static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|||
vfio_pci_set_power_state(vdev, PCI_D0);
|
||||
out_vf:
|
||||
vfio_pci_vf_uninit(vdev);
|
||||
out_uninit:
|
||||
vfio_uninit_group_dev(&vdev->vdev);
|
||||
kfree(vdev->pm_save);
|
||||
kfree(vdev);
|
||||
out_group_put:
|
||||
vfio_iommu_group_put(group, &pdev->dev);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void vfio_pci_remove(struct pci_dev *pdev)
|
||||
void vfio_pci_core_unregister_device(struct vfio_pci_core_device *vdev)
|
||||
{
|
||||
struct vfio_pci_core_device *vdev = dev_get_drvdata(&pdev->dev);
|
||||
struct pci_dev *pdev = vdev->pdev;
|
||||
|
||||
pci_disable_sriov(pdev);
|
||||
|
||||
vfio_unregister_group_dev(&vdev->vdev);
|
||||
|
||||
vfio_pci_vf_uninit(vdev);
|
||||
vfio_uninit_group_dev(&vdev->vdev);
|
||||
vfio_pci_vga_uninit(vdev);
|
||||
|
||||
vfio_iommu_group_put(pdev->dev.iommu_group, &pdev->dev);
|
||||
|
||||
if (!disable_idle_d3)
|
||||
vfio_pci_set_power_state(vdev, PCI_D0);
|
||||
|
||||
mutex_destroy(&vdev->ioeventfds_lock);
|
||||
kfree(vdev->region);
|
||||
kfree(vdev->pm_save);
|
||||
kfree(vdev);
|
||||
}
|
||||
|
||||
static pci_ers_result_t vfio_pci_aer_err_detected(struct pci_dev *pdev,
|
||||
|
|
@ -2022,16 +1947,11 @@ static pci_ers_result_t vfio_pci_aer_err_detected(struct pci_dev *pdev,
|
|||
return PCI_ERS_RESULT_CAN_RECOVER;
|
||||
}
|
||||
|
||||
static int vfio_pci_sriov_configure(struct pci_dev *pdev, int nr_virtfn)
|
||||
int vfio_pci_core_sriov_configure(struct pci_dev *pdev, int nr_virtfn)
|
||||
{
|
||||
struct vfio_device *device;
|
||||
int ret = 0;
|
||||
|
||||
might_sleep();
|
||||
|
||||
if (!enable_sriov)
|
||||
return -ENOENT;
|
||||
|
||||
device = vfio_device_get_from_dev(&pdev->dev);
|
||||
if (!device)
|
||||
return -ENODEV;
|
||||
|
|
@ -2046,19 +1966,10 @@ static int vfio_pci_sriov_configure(struct pci_dev *pdev, int nr_virtfn)
|
|||
return ret < 0 ? ret : nr_virtfn;
|
||||
}
|
||||
|
||||
static const struct pci_error_handlers vfio_err_handlers = {
|
||||
const struct pci_error_handlers vfio_pci_core_err_handlers = {
|
||||
.error_detected = vfio_pci_aer_err_detected,
|
||||
};
|
||||
|
||||
static struct pci_driver vfio_pci_driver = {
|
||||
.name = "vfio-pci",
|
||||
.id_table = NULL, /* only dynamic ids */
|
||||
.probe = vfio_pci_probe,
|
||||
.remove = vfio_pci_remove,
|
||||
.sriov_configure = vfio_pci_sriov_configure,
|
||||
.err_handler = &vfio_err_handlers,
|
||||
};
|
||||
|
||||
static bool vfio_dev_in_groups(struct vfio_pci_core_device *vdev,
|
||||
struct vfio_pci_group_info *groups)
|
||||
{
|
||||
|
|
@ -2239,83 +2150,15 @@ static bool vfio_pci_dev_set_try_reset(struct vfio_device_set *dev_set)
|
|||
return true;
|
||||
}
|
||||
|
||||
static void __exit vfio_pci_cleanup(void)
|
||||
/* This will become the __exit function of vfio_pci_core.ko */
|
||||
void vfio_pci_core_cleanup(void)
|
||||
{
|
||||
pci_unregister_driver(&vfio_pci_driver);
|
||||
vfio_pci_uninit_perm_bits();
|
||||
}
|
||||
|
||||
static void __init vfio_pci_fill_ids(void)
|
||||
/* This will become the __init function of vfio_pci_core.ko */
|
||||
int __init vfio_pci_core_init(void)
|
||||
{
|
||||
char *p, *id;
|
||||
int rc;
|
||||
|
||||
/* no ids passed actually */
|
||||
if (ids[0] == '\0')
|
||||
return;
|
||||
|
||||
/* add ids specified in the module parameter */
|
||||
p = ids;
|
||||
while ((id = strsep(&p, ","))) {
|
||||
unsigned int vendor, device, subvendor = PCI_ANY_ID,
|
||||
subdevice = PCI_ANY_ID, class = 0, class_mask = 0;
|
||||
int fields;
|
||||
|
||||
if (!strlen(id))
|
||||
continue;
|
||||
|
||||
fields = sscanf(id, "%x:%x:%x:%x:%x:%x",
|
||||
&vendor, &device, &subvendor, &subdevice,
|
||||
&class, &class_mask);
|
||||
|
||||
if (fields < 2) {
|
||||
pr_warn("invalid id string \"%s\"\n", id);
|
||||
continue;
|
||||
}
|
||||
|
||||
rc = pci_add_dynid(&vfio_pci_driver, vendor, device,
|
||||
subvendor, subdevice, class, class_mask, 0);
|
||||
if (rc)
|
||||
pr_warn("failed to add dynamic id [%04x:%04x[%04x:%04x]] class %#08x/%08x (%d)\n",
|
||||
vendor, device, subvendor, subdevice,
|
||||
class, class_mask, rc);
|
||||
else
|
||||
pr_info("add [%04x:%04x[%04x:%04x]] class %#08x/%08x\n",
|
||||
vendor, device, subvendor, subdevice,
|
||||
class, class_mask);
|
||||
}
|
||||
}
|
||||
|
||||
static int __init vfio_pci_init(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* Allocate shared config space permission data used by all devices */
|
||||
ret = vfio_pci_init_perm_bits();
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Register and scan for devices */
|
||||
ret = pci_register_driver(&vfio_pci_driver);
|
||||
if (ret)
|
||||
goto out_driver;
|
||||
|
||||
vfio_pci_fill_ids();
|
||||
|
||||
if (disable_denylist)
|
||||
pr_warn("device denylist disabled.\n");
|
||||
|
||||
return 0;
|
||||
|
||||
out_driver:
|
||||
vfio_pci_uninit_perm_bits();
|
||||
return ret;
|
||||
return vfio_pci_init_perm_bits();
|
||||
}
|
||||
|
||||
module_init(vfio_pci_init);
|
||||
module_exit(vfio_pci_cleanup);
|
||||
|
||||
MODULE_VERSION(DRIVER_VERSION);
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_AUTHOR(DRIVER_AUTHOR);
|
||||
MODULE_DESCRIPTION(DRIVER_DESC);
|
||||
|
|
|
|||
|
|
@ -206,4 +206,27 @@ static inline int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,
|
|||
}
|
||||
#endif
|
||||
|
||||
/* Will be exported for vfio pci drivers usage */
|
||||
void vfio_pci_core_cleanup(void);
|
||||
int vfio_pci_core_init(void);
|
||||
void vfio_pci_core_close_device(struct vfio_device *core_vdev);
|
||||
int vfio_pci_core_open_device(struct vfio_device *core_vdev);
|
||||
void vfio_pci_core_init_device(struct vfio_pci_core_device *vdev,
|
||||
struct pci_dev *pdev,
|
||||
const struct vfio_device_ops *vfio_pci_ops);
|
||||
int vfio_pci_core_register_device(struct vfio_pci_core_device *vdev);
|
||||
void vfio_pci_core_uninit_device(struct vfio_pci_core_device *vdev);
|
||||
void vfio_pci_core_unregister_device(struct vfio_pci_core_device *vdev);
|
||||
int vfio_pci_core_sriov_configure(struct pci_dev *pdev, int nr_virtfn);
|
||||
extern const struct pci_error_handlers vfio_pci_core_err_handlers;
|
||||
long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd,
|
||||
unsigned long arg);
|
||||
ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *buf,
|
||||
size_t count, loff_t *ppos);
|
||||
ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf,
|
||||
size_t count, loff_t *ppos);
|
||||
int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma);
|
||||
void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count);
|
||||
int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf);
|
||||
|
||||
#endif /* VFIO_PCI_CORE_H */
|
||||
|
|
|
|||
Loading…
Reference in a new issue