diff options
Diffstat (limited to 'qemu/include/hw/virtio/virtio-scsi.h')
-rw-r--r-- | qemu/include/hw/virtio/virtio-scsi.h | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/qemu/include/hw/virtio/virtio-scsi.h b/qemu/include/hw/virtio/virtio-scsi.h deleted file mode 100644 index ba2f5ce07..000000000 --- a/qemu/include/hw/virtio/virtio-scsi.h +++ /dev/null @@ -1,155 +0,0 @@ -/* - * Virtio SCSI HBA - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#ifndef _QEMU_VIRTIO_SCSI_H -#define _QEMU_VIRTIO_SCSI_H - -/* Override CDB/sense data size: they are dynamic (guest controlled) in QEMU */ -#define VIRTIO_SCSI_CDB_SIZE 0 -#define VIRTIO_SCSI_SENSE_SIZE 0 -#include "standard-headers/linux/virtio_scsi.h" -#include "hw/virtio/virtio.h" -#include "hw/pci/pci.h" -#include "hw/scsi/scsi.h" -#include "sysemu/iothread.h" - -#define TYPE_VIRTIO_SCSI_COMMON "virtio-scsi-common" -#define VIRTIO_SCSI_COMMON(obj) \ - OBJECT_CHECK(VirtIOSCSICommon, (obj), TYPE_VIRTIO_SCSI_COMMON) - -#define TYPE_VIRTIO_SCSI "virtio-scsi-device" -#define VIRTIO_SCSI(obj) \ - OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI) - -#define VIRTIO_SCSI_VQ_SIZE 128 -#define VIRTIO_SCSI_MAX_CHANNEL 0 -#define VIRTIO_SCSI_MAX_TARGET 255 -#define VIRTIO_SCSI_MAX_LUN 16383 - -typedef struct virtio_scsi_cmd_req VirtIOSCSICmdReq; -typedef struct virtio_scsi_cmd_resp VirtIOSCSICmdResp; -typedef struct virtio_scsi_ctrl_tmf_req VirtIOSCSICtrlTMFReq; -typedef struct virtio_scsi_ctrl_tmf_resp VirtIOSCSICtrlTMFResp; -typedef struct virtio_scsi_ctrl_an_req VirtIOSCSICtrlANReq; -typedef struct virtio_scsi_ctrl_an_resp VirtIOSCSICtrlANResp; -typedef struct virtio_scsi_event VirtIOSCSIEvent; -typedef struct virtio_scsi_config VirtIOSCSIConfig; - -struct VirtIOSCSIConf { - uint32_t num_queues; - uint32_t max_sectors; - uint32_t cmd_per_lun; - char *vhostfd; - char *wwpn; - uint32_t boot_tpgt; - IOThread *iothread; -}; - -struct VirtIOSCSI; - -typedef struct VirtIOSCSICommon { - VirtIODevice parent_obj; - VirtIOSCSIConf conf; - - uint32_t sense_size; - uint32_t cdb_size; - VirtQueue *ctrl_vq; - VirtQueue *event_vq; - 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; - - SCSIBus bus; - int resetting; - bool events_dropped; - - /* Fields for dataplane below */ - AioContext *ctx; /* one iothread per virtio-scsi-pci for now */ - - QTAILQ_HEAD(, VirtIOSCSIBlkChangeNotifier) insert_notifiers; - QTAILQ_HEAD(, VirtIOSCSIBlkChangeNotifier) remove_notifiers; - - bool dataplane_started; - bool dataplane_starting; - bool dataplane_stopping; - bool dataplane_fenced; - Error *blocker; - 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; - - union { - /* Used for two-stage request submission */ - QTAILQ_ENTRY(VirtIOSCSIReq) next; - - /* Used for cancellation of request during TMFs */ - int remaining; - }; - - SCSIRequest *sreq; - size_t resp_size; - enum SCSIXferMode mode; - union { - VirtIOSCSICmdResp cmd; - VirtIOSCSICtrlTMFResp tmf; - VirtIOSCSICtrlANResp an; - VirtIOSCSIEvent event; - } resp; - union { - VirtIOSCSICmdReq cmd; - VirtIOSCSICtrlTMFReq tmf; - VirtIOSCSICtrlANReq an; - } req; -} VirtIOSCSIReq; - -typedef void (*HandleOutput)(VirtIODevice *, VirtQueue *); - -void virtio_scsi_common_realize(DeviceState *dev, Error **errp, - HandleOutput ctrl, HandleOutput evt, - HandleOutput cmd); - -void virtio_scsi_common_unrealize(DeviceState *dev, Error **errp); -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); - -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_dataplane_notify(VirtIODevice *vdev, VirtIOSCSIReq *req); - -#endif /* _QEMU_VIRTIO_SCSI_H */ |