scsi_all.h

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

/*	$OpenBSD: scsi_all.h,v 1.12 2001/11/11 21:38:17 krw Exp $	*/
/*	$NetBSD: scsi_all.h,v 1.10 1996/09/12 01:57:17 thorpej Exp $	*/

/*
 * SCSI general  interface description
 */

/*
 * Largely written by Julian Elischer ([e-mail])
 * for TRW Financial Systems.
 *
 * TRW Financial Systems, in accordance with their agreement with Carnegie
 * Mellon University, makes this software available to CMU to distribute
 * or use in any manner that they see fit as long as this message is kept with 
 * the software. For this reason TFS also grants any other persons or
 * organisations permission to use or modify this software.
 *
 * TFS supplies this software to be publicly redistributed
 * on the understanding that TFS is not responsible for the correct
 * functioning of this software in any circumstances.
 *
 * Ported to run under 386BSD by Julian Elischer ([e-mail]) Sept 1992
 */

#ifndef	_SCSI_SCSI_ALL_H
#define _SCSI_SCSI_ALL_H 1

/*
 * SCSI command format
 */

/*
 * Define some bits that are in ALL (or a lot of) scsi commands
 */
#define SCSI_CTL_LINK		0x01
#define SCSI_CTL_FLAG		0x02
#define SCSI_CTL_VENDOR		0xC0


/*
 * Some old SCSI devices need the LUN to be set in the top 3 bits of the
 * second byte of the CDB.
 */
#define	SCSI_CMD_LUN_MASK	0xe0
#define	SCSI_CMD_LUN_SHIFT	5


struct scsi_generic {
	u_int8_t opcode;
	u_int8_t bytes[11];
};

struct scsi_test_unit_ready {
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[3];
	u_int8_t control;
};

struct scsi_send_diag {
	u_int8_t opcode;
	u_int8_t byte2;
#define	SSD_UOL		0x01
#define	SSD_DOL		0x02
#define	SSD_SELFTEST	0x04
#define	SSD_PF		0x10
	u_int8_t unused[1];
	u_int8_t paramlen[2];
	u_int8_t control;
};

struct scsi_sense {
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_inquiry {
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_mode_sense {
	u_int8_t opcode;
	u_int8_t byte2;
#define	SMS_DBD				0x08
	u_int8_t page;
#define	SMS_PAGE_CODE 			0x3F
#define	SMS_PAGE_CTRL 			0xC0
#define	SMS_PAGE_CTRL_CURRENT 		0x00
#define	SMS_PAGE_CTRL_CHANGEABLE 	0x40
#define	SMS_PAGE_CTRL_DEFAULT 		0x80
#define	SMS_PAGE_CTRL_SAVED 		0xC0
	u_int8_t unused;
	u_int8_t length;
	u_int8_t control;
};

struct scsi_mode_sense_big {
	u_int8_t opcode;
	u_int8_t byte2;		/* same bits as small version */
	u_int8_t page; 		/* same bits as small version */
	u_int8_t unused[4];
	u_int8_t length[2];
	u_int8_t control;
};

struct scsi_mode_select {
	u_int8_t opcode;
	u_int8_t byte2;
#define	SMS_SP	0x01
#define	SMS_PF	0x10
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_mode_select_big {
	u_int8_t opcode;
	u_int8_t byte2;		/* same bits as small version */
	u_int8_t unused[5];
	u_int8_t length[2];
	u_int8_t control;
};

struct scsi_reserve {
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_release {
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_prevent {
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t how;
	u_int8_t control;
};
#define	PR_PREVENT 0x01
#define PR_ALLOW   0x00

struct scsi_changedef {
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused1;
	u_int8_t how;
	u_int8_t unused[4];
	u_int8_t datalen;
	u_int8_t control;
};
#define SC_SCSI_1 0x01
#define SC_SCSI_2 0x03

/*
 * Opcodes
 */
#define	TEST_UNIT_READY		0x00
#define REQUEST_SENSE		0x03
#define INQUIRY			0x12
#define MODE_SELECT		0x15
#define MODE_SENSE		0x1a
#define START_STOP		0x1b
#define RESERVE			0x16
#define RELEASE			0x17
#define PREVENT_ALLOW		0x1e
#define POSITION_TO_ELEMENT	0x2b
#define	CHANGE_DEFINITION	0x40
#define	MODE_SENSE_BIG		0x54
#define	MODE_SELECT_BIG		0x55

/*
 * Sort of an extra one, for SCSI_RESET.
 */
#define GENRETRY		1

/*
 * sense data format
 */
#define T_DIRECT	0
#define T_SEQUENTIAL	1
#define T_PRINTER	2
#define T_PROCESSOR	3
#define T_WORM		4
#define T_CDROM		5
#define T_SCANNER 	6
#define T_OPTICAL 	7
#define T_NODEVICE	0x1F

#define T_CHANGER	8
#define T_COMM		9
#define	T_ENCLOSURE	13

#define T_REMOV		1
#define	T_FIXED		0

struct scsi_inquiry_data {
	u_int8_t device;
#define	SID_TYPE	0x1F
#define	SID_QUAL	0xE0
#define	SID_QUAL_LU_OK	0x00
#define	SID_QUAL_LU_OFFLINE	0x20
#define	SID_QUAL_RSVD	0x40
#define	SID_QUAL_BAD_LU	0x60
	u_int8_t dev_qual2;
#define	SID_QUAL2	0x7F
#define	SID_REMOVABLE	0x80
	u_int8_t version;
#define SID_ANSII	0x07
#define SID_ECMA	0x38
#define SID_ISO		0xC0
	u_int8_t response_format;
	u_int8_t additional_length;
	u_int8_t unused[2];
	u_int8_t flags;
#define	SID_SftRe	0x01
#define	SID_CmdQue	0x02
#define	SID_Linked	0x08
#define	SID_Sync	0x10
#define	SID_WBus16	0x20
#define	SID_WBus32	0x40
#define	SID_RelAdr	0x80
	char	vendor[8];
	char	product[16];
	char	revision[4];
	u_int8_t extra[20];
	u_int8_t flags2;
#define SID_IUS		0x01
#define SID_QAS		0x02
#define SID_CLOCKING	0x0c /* 0 == ST only, 1 == DT only, 3 == both */
	u_int8_t reserved;
};

struct scsi_sense_data_unextended {
/* 1*/	u_int8_t error_code;
/* 4*/	u_int8_t block[3];
};

struct scsi_sense_data {
/* 1*/	u_int8_t error_code;
#define	SSD_ERRCODE		0x7F
#define	SSD_ERRCODE_VALID	0x80
/* 2*/	u_int8_t segment;
/* 3*/	u_int8_t flags;
#define	SSD_KEY		0x0F
#define	SSD_ILI		0x20
#define	SSD_EOM		0x40
#define	SSD_FILEMARK	0x80
/* 7*/	u_int8_t info[4];
/* 8*/	u_int8_t extra_len;
/*12*/	u_int8_t cmd_spec_info[4];
/*13*/	u_int8_t add_sense_code;
/*14*/	u_int8_t add_sense_code_qual;
/*15*/	u_int8_t fru;
/*16*/	u_int8_t sense_key_spec_1;
#define	SSD_SCS_VALID	0x80
/*17*/	u_int8_t sense_key_spec_2;
/*18*/	u_int8_t sense_key_spec_3;
/*32*/	u_int8_t extra_bytes[14];
};

#define SKEY_NO_SENSE		0x00
#define SKEY_RECOVERED_ERROR	0x01
#define SKEY_NOT_READY		0x02
#define SKEY_MEDIUM_ERROR	0x03
#define SKEY_HARDWARE_ERROR	0x04
#define SKEY_ILLEGAL_REQUEST	0x05
#define SKEY_UNIT_ATTENTION	0x06
#define SKEY_WRITE_PROTECT	0x07
#define SKEY_BLANK_CHECK	0x08
#define SKEY_VENDOR_UNIQUE	0x09
#define SKEY_COPY_ABORTED	0x0A
#define SKEY_ABORTED_COMMAND	0x0B
#define SKEY_EQUAL		0x0C
#define SKEY_VOLUME_OVERFLOW	0x0D
#define SKEY_MISCOMPARE		0x0E
#define SKEY_RESERVED		0x0F

struct scsi_blk_desc {
	u_int8_t density;
	u_int8_t nblocks[3];
	u_int8_t reserved;
	u_int8_t blklen[3];
};

struct scsi_mode_header {
	u_int8_t data_length;	/* Sense data length */
	u_int8_t medium_type;
	u_int8_t dev_spec;
	u_int8_t blk_desc_len;
};

struct scsi_mode_header_big {
	u_int8_t data_length[2];	/* Sense data length */
	u_int8_t medium_type;
	u_int8_t dev_spec;
	u_int8_t unused[2];
	u_int8_t blk_desc_len[2];
};


/*
 * Status Byte
 */
#define SCSI_OK			0x00
#define SCSI_CHECK		0x02
#define SCSI_COND_MET		0x04
#define SCSI_BUSY		0x08	
#define SCSI_INTERM		0x10
#define SCSI_INTERM_COND_MET	0x14
#define SCSI_RESV_CONFLICT	0x18
#define SCSI_TERMINATED		0x22
#define SCSI_QUEUE_FULL		0x28	/* Old (Pre SCSI-3) name */
#define SCSI_TASKSET_FULL	0x28	/* New (SCSI-3)     name */
#define SCSI_ACA_ACTIVE		0x30

#endif /* _SCSI_SCSI_ALL_H */