/*      $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 */