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9a2ba82302
Make sure that all vhost interfaces use 64 bit features, as the virtio core does, and make sure to use ULL everywhere possible to be on the safe side. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
#ifndef VHOST_H
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#define VHOST_H
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#include "hw/hw.h"
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#include "hw/virtio/vhost-backend.h"
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#include "hw/virtio/virtio.h"
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#include "exec/memory.h"
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/* Generic structures common for any vhost based device. */
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struct vhost_virtqueue {
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int kick;
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int call;
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void *desc;
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void *avail;
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void *used;
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int num;
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unsigned long long used_phys;
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unsigned used_size;
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void *ring;
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unsigned long long ring_phys;
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unsigned ring_size;
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EventNotifier masked_notifier;
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};
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typedef unsigned long vhost_log_chunk_t;
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#define VHOST_LOG_PAGE 0x1000
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#define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t))
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#define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS)
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#define VHOST_INVALID_FEATURE_BIT (0xff)
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struct vhost_log {
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unsigned long long size;
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int refcnt;
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vhost_log_chunk_t log[0];
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};
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struct vhost_memory;
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struct vhost_dev {
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MemoryListener memory_listener;
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struct vhost_memory *mem;
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int n_mem_sections;
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MemoryRegionSection *mem_sections;
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struct vhost_virtqueue *vqs;
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int nvqs;
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/* the first virtqueue which would be used by this vhost dev */
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int vq_index;
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unsigned long long features;
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unsigned long long acked_features;
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unsigned long long backend_features;
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bool started;
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bool log_enabled;
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unsigned long long log_size;
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Error *migration_blocker;
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bool force;
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bool memory_changed;
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hwaddr mem_changed_start_addr;
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hwaddr mem_changed_end_addr;
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const VhostOps *vhost_ops;
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void *opaque;
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struct vhost_log *log;
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};
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int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
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VhostBackendType backend_type, bool force);
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void vhost_dev_cleanup(struct vhost_dev *hdev);
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bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev);
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int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev);
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void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev);
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int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
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void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
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/* Test and clear masked event pending status.
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* Should be called after unmask to avoid losing events.
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*/
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bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n);
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/* Mask/unmask events from this vq.
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*/
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void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n,
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bool mask);
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uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits,
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uint64_t features);
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void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,
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uint64_t features);
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#endif
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