/*	$OpenBSD: scsi_message.h,v 1.10 2019/09/27 23:07:42 krw Exp $	*/

#ifndef _SCSI_SCSI_MESSAGE_H
#define _SCSI_SCSI_MESSAGE_H

#define IS1BYTEMSG(m)	(((m) != 0x01 && (m) < 0x20) || (m) >= 0x80)
#define IS2BYTEMSG(m)	(((m) & 0xf0) == 0x20)
#define ISEXTMSG(m)	((m) == 0x01)

/* Messages (1 byte) */		     /* I/T (M)andatory or (O)ptional */
#define MSG_CMDCOMPLETE		0x00 /* M/M */
#define MSG_EXTENDED		0x01 /* O/O */
#define MSG_SAVEDATAPOINTER	0x02 /* O/O */
#define MSG_RESTOREPOINTERS	0x03 /* O/O */
#define MSG_DISCONNECT		0x04 /* O/O */
#define MSG_INITIATOR_DET_ERR	0x05 /* M/M */
#define MSG_ABORT		0x06 /* O/M */
#define MSG_MESSAGE_REJECT	0x07 /* M/M */
#define MSG_NOOP		0x08 /* M/M */
#define MSG_PARITY_ERROR	0x09 /* M/M */
#define MSG_LINK_CMD_COMPLETE	0x0a /* O/O */
#define MSG_LINK_CMD_COMPLETEF	0x0b /* O/O */
#define MSG_BUS_DEV_RESET	0x0c /* O/M */
#define MSG_ABORT_TAG		0x0d /* O/O */
#define MSG_CLEAR_QUEUE		0x0e /* O/O */
#define MSG_INIT_RECOVERY	0x0f /* O/O */
#define MSG_REL_RECOVERY	0x10 /* O/O */
#define MSG_TERM_IO_PROC	0x11 /* O/O */
#define MSG_QAS_REQUEST		0x55 /* O/O */ /* SPI3 */

/* Messages (2 byte) */
#define MSG_SIMPLE_Q_TAG	0x20 /* O/O */
#define MSG_HEAD_OF_Q_TAG	0x21 /* O/O */
#define MSG_ORDERED_Q_TAG	0x22 /* O/O */
#define MSG_IGN_WIDE_RESIDUE	0x23 /* O/O */

/* Identify message */		     /* M/M */
#define MSG_IDENTIFYFLAG	0x80
#define MSG_IDENTIFY_DISCFLAG	0x40
#define MSG_IDENTIFY(lun, disc)	(((disc) ? 0xc0 : MSG_IDENTIFYFLAG) | (lun))
#define MSG_ISIDENTIFY(m)	((m) & MSG_IDENTIFYFLAG)
#define MSG_IDENTIFY_LUNMASK	0x01F

/* Extended messages (opcode and length) */
#define MSG_EXT_SDTR		0x01
#define MSG_EXT_SDTR_LEN	0x03

#define MSG_EXT_WDTR		0x03
#define MSG_EXT_WDTR_LEN	0x02

#define MSG_EXT_WDTR_BUS_8_BIT  0x00
#define MSG_EXT_WDTR_BUS_16_BIT 0x01
#define MSG_EXT_WDTR_BUS_32_BIT 0x02

#define MSG_EXT_PPR		0x04
#define MSG_EXT_PPR_LEN		0x06

#define	MSG_EXT_PPR_PCOMP_EN	0x80
#define	MSG_EXT_PPR_RTI		0x40
#define	MSG_EXT_PPR_RD_STRM	0x20
#define	MSG_EXT_PPR_WR_FLOW	0x10
#define	MSG_EXT_PPR_HOLD_MCS	0x08
#define MSG_EXT_PPR_PROT_QAS	0x04
#define MSG_EXT_PPR_PROT_DT	0x02
#define MSG_EXT_PPR_PROT_IUS	0x01

#endif /* _SCSI_SCSI_MESSAGE_H */