mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/* Virtual Function IO wrapper around kernel API.
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*
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* Author: Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
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* Author: Steffen Vogel <post@steffenvogel.de>
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* Author: Daniel Krebs <github@daniel-krebs.net>
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* SPDX-FileCopyrightText: 2022-2023 Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
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* SPDX-FileCopyrightText: 2014-2023 Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2018 Daniel Krebs <github@daniel-krebs.net>
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <list>
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#include <memory>
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#include <vector>
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#include <linux/vfio.h>
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#include <sys/mman.h>
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#include <villas/kernel/vfio_device.hpp>
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#include <villas/log.hpp>
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namespace villas {
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namespace kernel {
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namespace vfio {
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#define VFIO_PATH "/dev/vfio/"
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#define VFIO_DEV VFIO_PATH "vfio"
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class Group {
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public:
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Group(int index, bool iommuEnabled);
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~Group();
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// No copying allowed because we manage the vfio state in constructor and destructors
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Group(Group const &) = delete;
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void operator=(Group const &) = delete;
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void setAttachedToContainer() { attachedToContainer = true; }
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bool isAttachedToContainer() { return attachedToContainer; }
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int getFileDescriptor() { return fd; }
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int getIndex() { return index; }
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std::shared_ptr<Device> attachDevice(std::shared_ptr<Device> device);
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std::shared_ptr<Device>
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attachDevice(const std::string &name,
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const kernel::pci::Device *pci_device = nullptr);
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bool checkStatus();
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void dump();
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private:
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// VFIO group file descriptor
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int fd;
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// Index of the IOMMU group as listed under /sys/kernel/iommu_groups/
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int index;
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bool attachedToContainer;
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// Status of group
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struct vfio_group_status status;
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// All devices owned by this group
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std::list<std::shared_ptr<Device>> devices;
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Logger log;
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};
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} // namespace vfio
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} // namespace kernel
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} // namespace villas
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