08f2030a2e
When switching address space with mutex lock hold, mapping will be replayed for assigned device. This will trigger relock deadlock. Also release the mutex resource in unrealize routine. Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com> Message-Id: <20220613061010.2674054-3-zhenzhong.duan@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
|
|
* 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"
|
|
#include "qom/object.h"
|
|
|
|
#define TYPE_VIRTIO_IOMMU "virtio-iommu-device"
|
|
#define TYPE_VIRTIO_IOMMU_PCI "virtio-iommu-pci"
|
|
OBJECT_DECLARE_SIMPLE_TYPE(VirtIOIOMMU, VIRTIO_IOMMU)
|
|
|
|
#define TYPE_VIRTIO_IOMMU_MEMORY_REGION "virtio-iommu-memory-region"
|
|
|
|
typedef struct IOMMUDevice {
|
|
void *viommu;
|
|
PCIBus *bus;
|
|
int devfn;
|
|
IOMMUMemoryRegion iommu_mr;
|
|
AddressSpace as;
|
|
MemoryRegion root; /* The root container of the device */
|
|
MemoryRegion bypass_mr; /* The alias of shared memory MR */
|
|
} IOMMUDevice;
|
|
|
|
typedef struct IOMMUPciBus {
|
|
PCIBus *bus;
|
|
IOMMUDevice *pbdev[]; /* Parent array is sparse, so dynamically alloc */
|
|
} IOMMUPciBus;
|
|
|
|
struct VirtIOIOMMU {
|
|
VirtIODevice parent_obj;
|
|
VirtQueue *req_vq;
|
|
VirtQueue *event_vq;
|
|
struct virtio_iommu_config config;
|
|
uint64_t features;
|
|
GHashTable *as_by_busptr;
|
|
IOMMUPciBus *iommu_pcibus_by_bus_num[PCI_BUS_MAX];
|
|
PCIBus *primary_bus;
|
|
ReservedRegion *reserved_regions;
|
|
uint32_t nb_reserved_regions;
|
|
GTree *domains;
|
|
QemuRecMutex mutex;
|
|
GTree *endpoints;
|
|
bool boot_bypass;
|
|
};
|
|
|
|
#endif
|