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virtio-iommu: Add skeleton

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This patchs adds the skeleton for the virtio-iommu device.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

Message-Id: <20200214132745.23392-2-eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Eric Auger 2020-02-14 14:27:36 +01:00 • committed by Michael S. Tsirkin
parent abdd16f468
commit 22c37a10f3
5 changed files with 335 additions and 0 deletions
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57
include/hw/virtio/virtio-iommu.h Normal file
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/*
* virtio-iommu device
*
* Copyright (c) 2020 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef QEMU_VIRTIO_IOMMU_H
#define QEMU_VIRTIO_IOMMU_H
#include "standard-headers/linux/virtio_iommu.h"
#include "hw/virtio/virtio.h"
#include "hw/pci/pci.h"
#define TYPE_VIRTIO_IOMMU "virtio-iommu-device"
#define VIRTIO_IOMMU(obj) \
OBJECT_CHECK(VirtIOIOMMU, (obj), TYPE_VIRTIO_IOMMU)
typedef struct IOMMUDevice {
void *viommu;
PCIBus *bus;
int devfn;
IOMMUMemoryRegion iommu_mr;
AddressSpace as;
} IOMMUDevice;
typedef struct IOMMUPciBus {
PCIBus *bus;
IOMMUDevice *pbdev[0]; /* Parent array is sparse, so dynamically alloc */
} IOMMUPciBus;
typedef struct VirtIOIOMMU {
VirtIODevice parent_obj;
VirtQueue *req_vq;
VirtQueue *event_vq;
struct virtio_iommu_config config;
uint64_t features;
GHashTable *as_by_busptr;
PCIBus *primary_bus;
GTree *domains;
QemuMutex mutex;
GTree *endpoints;
} VirtIOIOMMU;
#endif