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- /*
- * Copyright (c) 1992 NeXT Computer, Inc.
- *
- * Generic SCSI data structures.
- *
- * HISTORY
- *
- * 13 Apr 1993 Doug Mitchell
- * Standalone version for Loadable Adaptec driver.
- * 6 July 1992 David E. Bohman at NeXT
- * Created from m68k version.
- */
-
- /*
- * SCSI bus constants used only by driver (not exported)
- */
-
- /*
- * message codes
- */
- #define MSG_CMDCMPLT 0x00 /* to host: command complete */
- #define MSG_SAVEPTRS 0x02 /* to host: save data pointers */
- #define MSG_RESTOREPTRS 0x03 /* to host: restore pointers */
- #define MSG_DISCONNECT 0x04 /* to host: disconnect */
- #define MSG_IDETERR 0x05 /* to disk: initiator detected error */
- #define MSG_ABORT 0x06 /* to disk: abort op, go to bus free */
- #define MSG_MSGREJECT 0x07 /* both ways: last msg unimplemented */
- #define MSG_NOP 0x08 /* to disk: no-op message */
- #define MSG_MSGPARERR 0x09 /* to disk: parity error last message */
- #define MSG_LNKCMDCMPLT 0x0a /* to host: linked command complete */
- #define MSG_LNKCMDCMPLTFLAG 0x0b /* to host: flagged linked cmd cmplt */
- #define MSG_DEVICERESET 0x0c /* to disk: reset and go to bus free */
-
- #define MSG_IDENTIFYMASK 0x80 /* both ways: thread identification */
- #define MSG_ID_DISCONN 0x40 /* can disconnect/reconnect */
- #define MSG_ID_LUNMASK 0x07 /* target LUN */
-
- /*
- * opcode groups
- */
- #define SCSI_OPGROUP(opcode) ((opcode) & 0xe0)
-
- #define OPGROUP_0 0x00 /* six byte commands */
- #define OPGROUP_1 0x20 /* ten byte commands */
- #define OPGROUP_2 0x40 /* ten byte commands */
- #define OPGROUP_5 0xa0 /* twelve byte commands */
- #define OPGROUP_6 0xc0 /* six byte, vendor unique commands */
- #define OPGROUP_7 0xe0 /* ten byte, vendor unique commands */
-
- /*
- * scsi bus phases
- */
- #define PHASE_DATAOUT 0x0
- #define PHASE_DATAIN 0x1
- #define PHASE_COMMAND 0x2
- #define PHASE_STATUS 0x3
- #define PHASE_MSGOUT 0x6
- #define PHASE_MSGIN 0x7
-
-
-