[net-next-2.6.git] / include / scsi / scsi_tgt_if.h

/*
 * 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
Commit	Line	Data
97f78759 FT	1	/*
	2	* SCSI target kernel/user interface
	3	*
	4	* Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org>
	5	* Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu>
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License as
	9	* published by the Free Software Foundation; either version 2 of the
	10	* License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	20	* 02110-1301 USA
	21	*/
	22	#ifndef __SCSI_TARGET_IF_H
	23	#define __SCSI_TARGET_IF_H
	24
	25	/* user -> kernel */
2c47f9ef FT	26	#define TGT_UEVENT_CMD_RSP 0x0001
	27	#define TGT_UEVENT_IT_NEXUS_RSP 0x0002
	28	#define TGT_UEVENT_TSK_MGMT_RSP 0x0003
97f78759 FT	29
97f78759 FT	30	/* kernel -> user */
2c47f9ef FT	31	#define TGT_KEVENT_CMD_REQ 0x1001
	32	#define TGT_KEVENT_CMD_DONE 0x1002
	33	#define TGT_KEVENT_IT_NEXUS_REQ 0x1003
	34	#define TGT_KEVENT_TSK_MGMT_REQ 0x1004
97f78759 FT	35
	36	struct tgt_event_hdr {
	37	uint16_t version;
	38	uint16_t status;
	39	uint16_t type;
	40	uint16_t len;
	41	} __attribute__ ((aligned (sizeof(uint64_t))));
	42
	43	struct tgt_event {
	44	struct tgt_event_hdr hdr;
	45
	46	union {
	47	/* user-> kernel */
	48	struct {
	49	int host_no;
97f78759	50	int result;
2c47f9ef	51	aligned_u64 itn_id;
bc7e380a	52	aligned_u64 tag;
97f78759	53	aligned_u64 uaddr;
bc7e380a FT	54	aligned_u64 sense_uaddr;
	55	uint32_t len;
	56	uint32_t sense_len;
97f78759	57	uint8_t rw;
97f78759 FT	58	} cmd_rsp;
	59	struct {
	60	int host_no;
97f78759	61	int result;
2c47f9ef FT	62	aligned_u64 itn_id;
2c47f9ef FT	63	aligned_u64 mid;
97f78759	64	} tsk_mgmt_rsp;
2c47f9ef FT	65	struct {
	66	__s32 host_no;
	67	__s32 result;
	68	aligned_u64 itn_id;
	69	__u32 function;
	70	} it_nexus_rsp;
97f78759 FT	71
	72	/* kernel -> user */
	73	struct {
	74	int host_no;
	75	uint32_t data_len;
2c47f9ef	76	aligned_u64 itn_id;
97f78759 FT	77	uint8_t scb[16];
	78	uint8_t lun[8];
	79	int attribute;
	80	aligned_u64 tag;
	81	} cmd_req;
	82	struct {
	83	int host_no;
97f78759	84	int result;
2c47f9ef FT	85	aligned_u64 itn_id;
2c47f9ef FT	86	aligned_u64 tag;
97f78759 FT	87	} cmd_done;
	88	struct {
	89	int host_no;
	90	int function;
2c47f9ef	91	aligned_u64 itn_id;
97f78759 FT	92	aligned_u64 tag;
	93	uint8_t lun[8];
	94	aligned_u64 mid;
	95	} tsk_mgmt_req;
2c47f9ef FT	96	struct {
	97	__s32 host_no;
	98	__u32 function;
	99	aligned_u64 itn_id;
	100	__u32 max_cmds;
	101	__u8 initiator_id[16];
	102	} it_nexus_req;
97f78759 FT	103	} p;
	104	} __attribute__ ((aligned (sizeof(uint64_t))));
	105
	106	#define TGT_RING_SIZE (1UL << 16)
97f78759 FT	107
97f78759 FT	108	#endif