1/*
2 * This file is in the public domain.
3 * $FreeBSD: src/sys/cam/scsi/scsi_message.h,v 1.2 2000/05/01 20:21:29 peter Exp $
4 */
5
6/* Messages (1 byte) */ /* I/T (M)andatory or (O)ptional */
7#define MSG_SAVEDATAPOINTER 0x02 /* O/O */
8#define MSG_RESTOREPOINTERS 0x03 /* O/O */
9#define MSG_DISCONNECT 0x04 /* O/O */
10#define MSG_MESSAGE_REJECT 0x07 /* M/M */
11#define MSG_NOOP 0x08 /* M/M */
12
13/* Messages (2 byte) */
14#define MSG_SIMPLE_Q_TAG 0x20 /* O/O */
15#define MSG_IGN_WIDE_RESIDUE 0x23 /* O/O */
16
17/* Identify message */ /* M/M */
18#define MSG_IDENTIFYFLAG 0x80
19#define MSG_IDENTIFY_DISCFLAG 0x40
20#define MSG_IDENTIFY(lun, disc) (((disc) ? 0xc0 : MSG_IDENTIFYFLAG) | (lun))
21#define MSG_ISIDENTIFY(m) ((m) & MSG_IDENTIFYFLAG)
22#define MSG_IDENTIFY_LUNMASK 0x3F
23
24/* Extended messages (opcode and length) */
25#define MSG_EXT_SDTR_LEN 0x03
26
27#define MSG_EXT_WDTR_LEN 0x02
28#define MSG_EXT_WDTR_BUS_8_BIT 0x00
29#define MSG_EXT_WDTR_BUS_16_BIT 0x01
30#define MSG_EXT_WDTR_BUS_32_BIT 0x02 /* Deprecated in SPI3 */
31
32#define MSG_EXT_PPR_LEN 0x06
33#define MSG_EXT_PPR_PCOMP_EN 0x80
34#define MSG_EXT_PPR_RTI 0x40
35#define MSG_EXT_PPR_RD_STRM 0x20
36#define MSG_EXT_PPR_WR_FLOW 0x10
37#define MSG_EXT_PPR_HOLD_MCS 0x08
38#define MSG_EXT_PPR_QAS_REQ 0x04
39#define MSG_EXT_PPR_DT_REQ 0x02
40#define MSG_EXT_PPR_IU_REQ 0x01
41

source code of linux/drivers/scsi/aic7xxx/scsi_message.h