/*
 * This file is in the public domain.
 * $FreeBSD: src/sys/cam/scsi/scsi_message.h,v 1.2 2000/05/01 20:21:29 peter Exp $
 */

/* Messages (1 byte) */              /* I/T (M)andatory or (O)ptional */
#define MSG_SAVEDATAPOINTER     0x02 /* O/O */
#define MSG_RESTOREPOINTERS     0x03 /* O/O */
#define MSG_DISCONNECT          0x04 /* O/O */
#define MSG_MESSAGE_REJECT      0x07 /* M/M */
#define MSG_NOOP                0x08 /* M/M */

/* Messages (2 byte) */
#define MSG_SIMPLE_Q_TAG        0x20 /* 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    0x3F 

/* Extended messages (opcode and length) */
#define MSG_EXT_SDTR_LEN        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 /* Deprecated in SPI3 */

#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_QAS_REQ     0x04
#define MSG_EXT_PPR_DT_REQ      0x02
#define MSG_EXT_PPR_IU_REQ      0x01