1 /* 2 * Virtio SCSI HBA 3 * 4 * Copyright IBM, Corp. 2010 5 * 6 * Authors: 7 * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2. See 10 * the COPYING file in the top-level directory. 11 * 12 */ 13 14 #ifndef _QEMU_VIRTIO_SCSI_H 15 #define _QEMU_VIRTIO_SCSI_H 16 17 #include "hw/virtio/virtio.h" 18 #include "hw/pci/pci.h" 19 #include "hw/scsi/scsi.h" 20 21 #define TYPE_VIRTIO_SCSI "virtio-scsi-device" 22 #define VIRTIO_SCSI(obj) \ 23 OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI) 24 25 26 /* The ID for virtio_scsi */ 27 #define VIRTIO_ID_SCSI 8 28 29 /* Feature Bits */ 30 #define VIRTIO_SCSI_F_INOUT 0 31 #define VIRTIO_SCSI_F_HOTPLUG 1 32 #define VIRTIO_SCSI_F_CHANGE 2 33 34 struct VirtIOSCSIConf { 35 uint32_t num_queues; 36 uint32_t max_sectors; 37 uint32_t cmd_per_lun; 38 }; 39 40 typedef struct VirtIOSCSI { 41 VirtIODevice parent_obj; 42 VirtIOSCSIConf conf; 43 44 SCSIBus bus; 45 uint32_t sense_size; 46 uint32_t cdb_size; 47 int resetting; 48 bool events_dropped; 49 VirtQueue *ctrl_vq; 50 VirtQueue *event_vq; 51 VirtQueue **cmd_vqs; 52 } VirtIOSCSI; 53 54 #define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _conf_field) \ 55 DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \ 56 DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF),\ 57 DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128) 58 59 #define DEFINE_VIRTIO_SCSI_FEATURES(_state, _feature_field) \ 60 DEFINE_VIRTIO_COMMON_FEATURES(_state, _feature_field), \ 61 DEFINE_PROP_BIT("hotplug", _state, _feature_field, VIRTIO_SCSI_F_HOTPLUG, \ 62 true), \ 63 DEFINE_PROP_BIT("param_change", _state, _feature_field, \ 64 VIRTIO_SCSI_F_CHANGE, true) 65 66 #endif /* _QEMU_VIRTIO_SCSI_H */ 67