Merge remote-tracking branch 'bonzini/hw-dirs' into staging

# By Paolo Bonzini
# Via Paolo Bonzini
* bonzini/hw-dirs: (35 commits)
  hw: move private headers to hw/ subdirectories.
  MAINTAINERS: update for source code movement
  hw: move last file to hw/arm/
  hw: move hw/kvm/ to hw/i386/kvm
  hw: move ARM CPU cores to hw/cpu/, configure with default-configs/
  hw: move other devices to hw/misc/, configure with default-configs/
  hw: move NVRAM interfaces to hw/nvram/, configure with default-configs/
  hw: move GPIO interfaces to hw/gpio/, configure with default-configs/
  hw: move interrupt controllers to hw/intc/, configure with default-configs/
  hw: move DMA controllers to hw/dma/, configure with default-configs/
  hw: move VFIO and ivshmem to hw/misc/
  hw: move PCI bridges to hw/pci-* or hw/ARCH
  hw: move SD/MMC devices to hw/sd/, configure with default-configs/
  hw: move timer devices to hw/timer/, configure with default-configs/
  hw: move ISA bridges and devices to hw/isa/, configure with default-configs/
  hw: move char devices to hw/char/, configure via default-configs/
  hw: move more files to hw/xen/
  hw: move SCSI controllers to hw/scsi/, configure via default-configs/
  hw: move SSI controllers to hw/ssi/, configure via default-configs/
  hw: move I2C controllers to hw/i2c/, configure via default-configs/
  ...

Message-id: 1365442249-18259-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
new file mode 100644
index 0000000000..b373be0387
--- /dev/null
+++ b/include/hw/virtio/vhost.h
@@ -0,0 +1,68 @@
+#ifndef VHOST_H
+#define VHOST_H
+
+#include "hw/hw.h"
+#include "hw/virtio/virtio.h"
+#include "exec/memory.h"
+
+/* Generic structures common for any vhost based device. */
+struct vhost_virtqueue {
+    int kick;
+    int call;
+    void *desc;
+    void *avail;
+    void *used;
+    int num;
+    unsigned long long used_phys;
+    unsigned used_size;
+    void *ring;
+    unsigned long long ring_phys;
+    unsigned ring_size;
+    EventNotifier masked_notifier;
+};
+
+typedef unsigned long vhost_log_chunk_t;
+#define VHOST_LOG_PAGE 0x1000
+#define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t))
+#define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS)
+
+struct vhost_memory;
+struct vhost_dev {
+    MemoryListener memory_listener;
+    int control;
+    struct vhost_memory *mem;
+    int n_mem_sections;
+    MemoryRegionSection *mem_sections;
+    struct vhost_virtqueue *vqs;
+    int nvqs;
+    /* the first virtuque which would be used by this vhost dev */
+    int vq_index;
+    unsigned long long features;
+    unsigned long long acked_features;
+    unsigned long long backend_features;
+    bool started;
+    bool log_enabled;
+    vhost_log_chunk_t *log;
+    unsigned long long log_size;
+    bool force;
+};
+
+int vhost_dev_init(struct vhost_dev *hdev, int devfd, const char *devpath,
+                   bool force);
+void vhost_dev_cleanup(struct vhost_dev *hdev);
+bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev);
+int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev);
+void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev);
+int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
+void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
+
+/* Test and clear masked event pending status.
+ * Should be called after unmask to avoid losing events.
+ */
+bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n);
+
+/* Mask/unmask events from this vq.
+ */
+void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n,
+                          bool mask);
+#endif