These changes are the raw update to qemu-2.6.

[kvmfornfv.git] / qemu / include / hw / virtio / virtio-scsi.h

diff --git a/qemu/include/hw/virtio/virtio-scsi.h b/qemu/include/hw/virtio/virtio-scsi.h
index 088fe9f..ba2f5ce 100644 (file)
--- a/qemu/include/hw/virtio/virtio-scsi.h
+++ b/qemu/include/hw/virtio/virtio-scsi.h
@@ -22,7 +22,6 @@
 #include "hw/pci/pci.h"
 #include "hw/scsi/scsi.h"
 #include "sysemu/iothread.h"
-#include "hw/virtio/dataplane/vring.h"
 
 #define TYPE_VIRTIO_SCSI_COMMON "virtio-scsi-common"
 #define VIRTIO_SCSI_COMMON(obj) \
@@ -58,13 +57,6 @@ struct VirtIOSCSIConf {
 
 struct VirtIOSCSI;
 
-typedef struct {
-    struct VirtIOSCSI *parent;
-    Vring vring;
-    EventNotifier host_notifier;
-    EventNotifier guest_notifier;
-} VirtIOSCSIVring;
-
 typedef struct VirtIOSCSICommon {
     VirtIODevice parent_obj;
     VirtIOSCSIConf conf;
@@ -76,6 +68,13 @@ typedef struct VirtIOSCSICommon {
     VirtQueue **cmd_vqs;
 } VirtIOSCSICommon;
 
+typedef struct VirtIOSCSIBlkChangeNotifier {
+    Notifier n;
+    struct VirtIOSCSI *s;
+    SCSIDevice *sd;
+    QTAILQ_ENTRY(VirtIOSCSIBlkChangeNotifier) next;
+} VirtIOSCSIBlkChangeNotifier;
+
 typedef struct VirtIOSCSI {
     VirtIOSCSICommon parent_obj;
 
@@ -86,37 +85,29 @@ typedef struct VirtIOSCSI {
     /* Fields for dataplane below */
     AioContext *ctx; /* one iothread per virtio-scsi-pci for now */
 
-    /* Vring is used instead of vq in dataplane code, because of the underlying
-     * memory layer thread safety */
-    VirtIOSCSIVring *ctrl_vring;
-    VirtIOSCSIVring *event_vring;
-    VirtIOSCSIVring **cmd_vrings;
+    QTAILQ_HEAD(, VirtIOSCSIBlkChangeNotifier) insert_notifiers;
+    QTAILQ_HEAD(, VirtIOSCSIBlkChangeNotifier) remove_notifiers;
+
     bool dataplane_started;
     bool dataplane_starting;
     bool dataplane_stopping;
-    bool dataplane_disabled;
     bool dataplane_fenced;
     Error *blocker;
-    Notifier migration_state_notifier;
     uint32_t host_features;
 } VirtIOSCSI;
 
 typedef struct VirtIOSCSIReq {
+    /* Note:
+     * - fields up to resp_iov are initialized by virtio_scsi_init_req;
+     * - fields starting at vring are zeroed by virtio_scsi_init_req.
+     * */
+    VirtQueueElement elem;
+
     VirtIOSCSI *dev;
     VirtQueue *vq;
     QEMUSGList qsgl;
     QEMUIOVector resp_iov;
 
-    /* Note:
-     * - fields before elem are initialized by virtio_scsi_init_req;
-     * - elem is uninitialized at the time of allocation.
-     * - fields after elem are zeroed by virtio_scsi_init_req.
-     * */
-
-    VirtQueueElement elem;
-    /* Set by dataplane code. */
-    VirtIOSCSIVring *vring;
-
     union {
         /* Used for two-stage request submission */
         QTAILQ_ENTRY(VirtIOSCSIReq) next;
@@ -148,10 +139,10 @@ void virtio_scsi_common_realize(DeviceState *dev, Error **errp,
                                 HandleOutput cmd);
 
 void virtio_scsi_common_unrealize(DeviceState *dev, Error **errp);
-void virtio_scsi_handle_ctrl_req(VirtIOSCSI *s, VirtIOSCSIReq *req);
-bool virtio_scsi_handle_cmd_req_prepare(VirtIOSCSI *s, VirtIOSCSIReq *req);
-void virtio_scsi_handle_cmd_req_submit(VirtIOSCSI *s, VirtIOSCSIReq *req);
-VirtIOSCSIReq *virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq);
+void virtio_scsi_handle_event_vq(VirtIOSCSI *s, VirtQueue *vq);
+void virtio_scsi_handle_cmd_vq(VirtIOSCSI *s, VirtQueue *vq);
+void virtio_scsi_handle_ctrl_vq(VirtIOSCSI *s, VirtQueue *vq);
+void virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq, VirtIOSCSIReq *req);
 void virtio_scsi_free_req(VirtIOSCSIReq *req);
 void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
                             uint32_t event, uint32_t reason);
@@ -159,8 +150,6 @@ void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
 void virtio_scsi_set_iothread(VirtIOSCSI *s, IOThread *iothread);
 void virtio_scsi_dataplane_start(VirtIOSCSI *s);
 void virtio_scsi_dataplane_stop(VirtIOSCSI *s);
-void virtio_scsi_vring_push_notify(VirtIOSCSIReq *req);
-VirtIOSCSIReq *virtio_scsi_pop_req_vring(VirtIOSCSI *s,
-                                         VirtIOSCSIVring *vring);
+void virtio_scsi_dataplane_notify(VirtIODevice *vdev, VirtIOSCSIReq *req);
 
 #endif /* _QEMU_VIRTIO_SCSI_H */