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Diffstat (limited to 'include/scsi/scsi_tgt_if.h')
| -rw-r--r-- | include/scsi/scsi_tgt_if.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/include/scsi/scsi_tgt_if.h b/include/scsi/scsi_tgt_if.h new file mode 100644 index 00000000..f2ee7c23 --- /dev/null +++ b/include/scsi/scsi_tgt_if.h @@ -0,0 +1,108 @@ +/* + * SCSI target kernel/user interface + * + * Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org> + * Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ +#ifndef __SCSI_TARGET_IF_H +#define __SCSI_TARGET_IF_H + +/* user -> kernel */ +#define TGT_UEVENT_CMD_RSP 0x0001 +#define TGT_UEVENT_IT_NEXUS_RSP 0x0002 +#define TGT_UEVENT_TSK_MGMT_RSP 0x0003 + +/* kernel -> user */ +#define TGT_KEVENT_CMD_REQ 0x1001 +#define TGT_KEVENT_CMD_DONE 0x1002 +#define TGT_KEVENT_IT_NEXUS_REQ 0x1003 +#define TGT_KEVENT_TSK_MGMT_REQ 0x1004 + +struct tgt_event_hdr { + uint16_t version; + uint16_t status; + uint16_t type; + uint16_t len; +} __attribute__ ((aligned (sizeof(uint64_t)))); + +struct tgt_event { + struct tgt_event_hdr hdr; + + union { + /* user-> kernel */ + struct { + int host_no; + int result; + aligned_u64 itn_id; + aligned_u64 tag; + aligned_u64 uaddr; + aligned_u64 sense_uaddr; + uint32_t len; + uint32_t sense_len; + uint8_t rw; + } cmd_rsp; + struct { + int host_no; + int result; + aligned_u64 itn_id; + aligned_u64 mid; + } tsk_mgmt_rsp; + struct { + __s32 host_no; + __s32 result; + aligned_u64 itn_id; + __u32 function; + } it_nexus_rsp; + + /* kernel -> user */ + struct { + int host_no; + uint32_t data_len; + aligned_u64 itn_id; + uint8_t scb[16]; + uint8_t lun[8]; + int attribute; + aligned_u64 tag; + } cmd_req; + struct { + int host_no; + int result; + aligned_u64 itn_id; + aligned_u64 tag; + } cmd_done; + struct { + int host_no; + int function; + aligned_u64 itn_id; + aligned_u64 tag; + uint8_t lun[8]; + aligned_u64 mid; + } tsk_mgmt_req; + struct { + __s32 host_no; + __u32 function; + aligned_u64 itn_id; + __u32 max_cmds; + __u8 initiator_id[16]; + } it_nexus_req; + } p; +} __attribute__ ((aligned (sizeof(uint64_t)))); + +#define TGT_RING_SIZE (1UL << 16) + +#endif |