5f503cd9f3
This is the implementation of virtio-pmem device. Support will require
machine changes for the architectures that will support it, so it will
not yet be compiled. It can be unlocked with VIRTIO_PMEM_SUPPORTED per
machine and disabled globally via VIRTIO_PMEM.
We cannot use the "addr" property as that is already used e.g. for
virtio-pci/pci devices. And we will have e.g. virtio-pmem-pci as a proxy.
So we have to choose a different one (unfortunately). "memaddr" it is.
That name should ideally be used by all other virtio-* based memory
devices in the future.
-device virtio-pmem-pci,id=p0,bus=bux0,addr=0x01,memaddr=0x1000000...
Acked-by: Markus Armbruster <armbru@redhat.com>
[ QAPI bits ]
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
[ MemoryDevice/MemoryRegion changes, cleanups, addr property "memaddr",
split up patches, unplug handler ]
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190619094907.10131-2-pagupta@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
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* Virtio PMEM device
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*
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* Copyright (C) 2018-2019 Red Hat, Inc.
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*
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* Authors:
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* Pankaj Gupta <pagupta@redhat.com>
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* David Hildenbrand <david@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef HW_VIRTIO_PMEM_H
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#define HW_VIRTIO_PMEM_H
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#include "hw/virtio/virtio.h"
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#include "sysemu/hostmem.h"
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#define TYPE_VIRTIO_PMEM "virtio-pmem"
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#define VIRTIO_PMEM(obj) \
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OBJECT_CHECK(VirtIOPMEM, (obj), TYPE_VIRTIO_PMEM)
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#define VIRTIO_PMEM_CLASS(oc) \
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OBJECT_CLASS_CHECK(VirtIOPMEMClass, (oc), TYPE_VIRTIO_PMEM)
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#define VIRTIO_PMEM_GET_CLASS(obj) \
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OBJECT_GET_CLASS(VirtIOPMEMClass, (obj), TYPE_VIRTIO_PMEM)
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#define VIRTIO_PMEM_ADDR_PROP "memaddr"
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#define VIRTIO_PMEM_MEMDEV_PROP "memdev"
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typedef struct VirtIOPMEM {
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VirtIODevice parent_obj;
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VirtQueue *rq_vq;
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uint64_t start;
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HostMemoryBackend *memdev;
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} VirtIOPMEM;
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typedef struct VirtIOPMEMClass {
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/* private */
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VirtIODevice parent;
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/* public */
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void (*fill_device_info)(const VirtIOPMEM *pmem, VirtioPMEMDeviceInfo *vi);
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MemoryRegion *(*get_memory_region)(VirtIOPMEM *pmem, Error **errp);
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} VirtIOPMEMClass;
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#endif
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