xref: /openbmc/qemu/include/hw/virtio/virtio-iommu.h (revision 0e76929d)
1 /*
2  * virtio-iommu device
3  *
4  * Copyright (c) 2020 Red Hat, Inc.
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms and conditions of the GNU General Public License,
8  * version 2 or later, as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13  * more details.
14  *
15  * You should have received a copy of the GNU General Public License along with
16  * this program.  If not, see <http://www.gnu.org/licenses/>.
17  *
18  */
19 
20 #ifndef QEMU_VIRTIO_IOMMU_H
21 #define QEMU_VIRTIO_IOMMU_H
22 
23 #include "standard-headers/linux/virtio_iommu.h"
24 #include "hw/virtio/virtio.h"
25 #include "hw/pci/pci.h"
26 #include "qom/object.h"
27 
28 #define TYPE_VIRTIO_IOMMU "virtio-iommu-device"
29 #define TYPE_VIRTIO_IOMMU_PCI "virtio-iommu-pci"
30 OBJECT_DECLARE_SIMPLE_TYPE(VirtIOIOMMU, VIRTIO_IOMMU)
31 
32 #define TYPE_VIRTIO_IOMMU_MEMORY_REGION "virtio-iommu-memory-region"
33 
34 typedef struct IOMMUDevice {
35     void         *viommu;
36     PCIBus       *bus;
37     int           devfn;
38     IOMMUMemoryRegion  iommu_mr;
39     AddressSpace  as;
40     MemoryRegion root;          /* The root container of the device */
41     MemoryRegion bypass_mr;     /* The alias of shared memory MR */
42 } IOMMUDevice;
43 
44 typedef struct IOMMUPciBus {
45     PCIBus       *bus;
46     IOMMUDevice  *pbdev[]; /* Parent array is sparse, so dynamically alloc */
47 } IOMMUPciBus;
48 
49 struct VirtIOIOMMU {
50     VirtIODevice parent_obj;
51     VirtQueue *req_vq;
52     VirtQueue *event_vq;
53     struct virtio_iommu_config config;
54     uint64_t features;
55     GHashTable *as_by_busptr;
56     IOMMUPciBus *iommu_pcibus_by_bus_num[PCI_BUS_MAX];
57     PCIBus *primary_bus;
58     ReservedRegion *reserved_regions;
59     uint32_t nb_reserved_regions;
60     GTree *domains;
61     QemuRecMutex mutex;
62     GTree *endpoints;
63     bool boot_bypass;
64 };
65 
66 #endif
67