1 /* 2 * vhost_scsi host device 3 * 4 * Copyright IBM, Corp. 2011 5 * 6 * Authors: 7 * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU LGPL, version 2 or later. 10 * See the COPYING.LIB file in the top-level directory. 11 * 12 */ 13 14 #ifndef VHOST_SCSI_H 15 #define VHOST_SCSI_H 16 17 #include "qemu-common.h" 18 #include "hw/qdev.h" 19 #include "hw/virtio/virtio-scsi.h" 20 #include "hw/virtio/vhost.h" 21 22 /* 23 * Used by QEMU userspace to ensure a consistent vhost-scsi ABI. 24 * 25 * ABI Rev 0: July 2012 version starting point for v3.6-rc merge candidate + 26 * RFC-v2 vhost-scsi userspace. Add GET_ABI_VERSION ioctl usage 27 * ABI Rev 1: January 2013. Ignore vhost_tpgt filed in struct vhost_scsi_target. 28 * All the targets under vhost_wwpn can be seen and used by guest. 29 */ 30 31 #define VHOST_SCSI_ABI_VERSION 1 32 33 /* TODO #include <linux/vhost.h> properly */ 34 /* For VHOST_SCSI_SET_ENDPOINT/VHOST_SCSI_CLEAR_ENDPOINT ioctl */ 35 struct vhost_scsi_target { 36 int abi_version; 37 char vhost_wwpn[224]; 38 unsigned short vhost_tpgt; 39 unsigned short reserved; 40 }; 41 42 enum vhost_scsi_vq_list { 43 VHOST_SCSI_VQ_CONTROL = 0, 44 VHOST_SCSI_VQ_EVENT = 1, 45 VHOST_SCSI_VQ_NUM_FIXED = 2, 46 }; 47 48 #define VHOST_VIRTIO 0xAF 49 #define VHOST_SCSI_SET_ENDPOINT _IOW(VHOST_VIRTIO, 0x40, struct vhost_scsi_target) 50 #define VHOST_SCSI_CLEAR_ENDPOINT _IOW(VHOST_VIRTIO, 0x41, struct vhost_scsi_target) 51 #define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, int) 52 53 #define TYPE_VHOST_SCSI "vhost-scsi" 54 #define VHOST_SCSI(obj) \ 55 OBJECT_CHECK(VHostSCSI, (obj), TYPE_VHOST_SCSI) 56 57 typedef struct VHostSCSI { 58 VirtIOSCSICommon parent_obj; 59 60 Error *migration_blocker; 61 62 struct vhost_dev dev; 63 } VHostSCSI; 64 65 #define DEFINE_VHOST_SCSI_PROPERTIES(_state, _conf_field) \ 66 DEFINE_PROP_STRING("vhostfd", _state, _conf_field.vhostfd), \ 67 DEFINE_PROP_STRING("wwpn", _state, _conf_field.wwpn), \ 68 DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \ 69 DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF), \ 70 DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128) 71 72 73 #endif 74