freebsd-skq/sys/cam/scsi/scsi_ses.h

/* $FreeBSD$ */
/*
 * Copyright (c) 2000 by Matthew Jacob
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification, immediately at the beginning of the file.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * the GNU Public License ("GPL").
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#define	SESIOC			(('s' - 040) << 8)
#define	SESIOC_GETNOBJ		_IOR(SESIOC, 1, unsigned int)
#define	SESIOC_GETOBJMAP	_IOW(SESIOC, 2, void *)
#define	SESIOC_GETENCSTAT	_IOR(SESIOC, 3, ses_encstat)
#define	SESIOC_SETENCSTAT	_IOW(SESIOC, 4, ses_encstat)
#define	SESIOC_GETOBJSTAT	_IOR(SESIOC, 5, ses_objstat)
#define	SESIOC_SETOBJSTAT	_IOW(SESIOC, 6, ses_objstat)
#define	SESIOC_INIT		_IO(SESIOC, 7)

/*
 * Platform Independent Definitions for SES devices.
 */
/*
 * SCSI Based Environmental Services Application Defines
 *
 * Based almost entirely on SCSI-3 SES Revision 8A specification,
 * but slightly abstracted as the underlying device may in fact
 * be a SAF-TE or vendor unique device.
 */
/*
 * SES Driver Operations:
 * (The defines themselves are platform and access method specific)
 *
 * SESIOC_GETNOBJ
 * SESIOC_GETOBJMAP
 * SESIOC_GETENCSTAT
 * SESIOC_SETENCSTAT
 * SESIOC_GETOBJSTAT
 * SESIOC_SETOBJSTAT
 * SESIOC_INIT
 *
 *
 * An application finds out how many objects an SES instance
 * is managing by performing a SESIOC_GETNOBJ operation. It then
 * performs a SESIOC_GETOBJMAP to get the map that contains the
 * object identifiers for all objects (see ses_object below).
 * This information is static.
 * 
 * The application may perform SESIOC_GETOBJSTAT operations to retrieve
 * status on an object (see the ses_objstat structure below), SESIOC_SETOBJSTAT
 * operations to set status for an object.
 *
 * Similarly overall enclosure status me be fetched or set via
 * SESIOC_GETENCSTAT or  SESIOC_SETENCSTAT operations (see ses_encstat below).
 *
 * Readers should note that there is nothing that requires either a set
 * or a clear operation to actually latch and do anything in the target.
 *
 * A SESIOC_INIT operation causes the enclosure to be initialized.
 */

typedef struct {
	unsigned int	obj_id;		/* Object Identifier */
	unsigned char	subencid;	/* SubEnclosure ID */
	unsigned char	object_type;	/* Object Type */
} ses_object;

/* Object Types */
#define	SESTYP_UNSPECIFIED	0x00
#define	SESTYP_DEVICE		0x01
#define	SESTYP_POWER		0x02
#define	SESTYP_FAN		0x03
#define	SESTYP_THERM		0x04
#define	SESTYP_DOORLOCK		0x05
#define	SESTYP_ALARM		0x06
#define	SESTYP_ESCC		0x07	/* Enclosure SCC */
#define	SESTYP_SCC		0x08	/* SCC */
#define	SESTYP_NVRAM		0x09
#define	SESTYP_UPS		0x0b
#define	SESTYP_DISPLAY		0x0c
#define	SESTYP_KEYPAD		0x0d
#define	SESTYP_SCSIXVR		0x0f
#define	SESTYP_LANGUAGE		0x10
#define	SESTYP_COMPORT		0x11
#define	SESTYP_VOM		0x12
#define	SESTYP_AMMETER		0x13
#define	SESTYP_SCSI_TGT		0x14
#define	SESTYP_SCSI_INI		0x15
#define	SESTYP_SUBENC		0x16

/*
 * Overall Enclosure Status
 */
typedef unsigned char ses_encstat;
#define	SES_ENCSTAT_UNRECOV		0x1
#define	SES_ENCSTAT_CRITICAL		0x2
#define	SES_ENCSTAT_NONCRITICAL		0x4
#define	SES_ENCSTAT_INFO		0x8

/*
 * Object Status
 */
typedef struct {
	unsigned int	obj_id;
	unsigned char	cstat[4];
} ses_objstat;

/* Summary SES Status Defines, Common Status Codes */
#define	SES_OBJSTAT_UNSUPPORTED		0
#define	SES_OBJSTAT_OK			1
#define	SES_OBJSTAT_CRIT		2
#define	SES_OBJSTAT_NONCRIT		3
#define	SES_OBJSTAT_UNRECOV		4
#define	SES_OBJSTAT_NOTINSTALLED	5
#define	SES_OBJSTAT_UNKNOWN		6
#define	SES_OBJSTAT_NOTAVAIL		7

/*
 * For control pages, cstat[0] is the same for the
 * enclosure and is common across all device types.
 *
 * If SESCTL_CSEL is set, then PRDFAIL, DISABLE and RSTSWAP
 * are checked, otherwise bits that are specific to the device
 * type in the other 3 bytes of cstat or checked.
 */
#define	SESCTL_CSEL		0x80
#define	SESCTL_PRDFAIL		0x40
#define	SESCTL_DISABLE		0x20
#define	SESCTL_RSTSWAP		0x10


/* Control bits, Device Elements, byte 2 */
#define	SESCTL_DRVLCK	0x40	/* "DO NOT REMOVE" */
#define	SESCTL_RQSINS	0x08	/* RQST INSERT */
#define	SESCTL_RQSRMV	0x04	/* RQST REMOVE */
#define	SESCTL_RQSID	0x02	/* RQST IDENT */
/* Control bits, Device Elements, byte 3 */
#define	SESCTL_RQSFLT	0x20	/* RQST FAULT */
#define	SESCTL_DEVOFF	0x10	/* DEVICE OFF */

/* Control bits, Generic, byte 3 */
#define	SESCTL_RQSTFAIL	0x40
#define	SESCTL_RQSTON	0x20
/*
 * Platform Independent Driver Internal Definitions for SES devices.
 */
typedef enum {
	SES_NONE,
	SES_SES_SCSI2,
	SES_SES,
	SES_SES_PASSTHROUGH,
	SES_SEN,
	SES_SAFT
} enctyp;

#define	SES_DEVICE_TYPE	0x0D

#define	SEN_ID		"UNISYS           SUN_SEN"
#define	SEN_ID_LEN	24

struct ses_softc;
typedef struct ses_softc ses_softc_t;
typedef struct {
	int (*softc_init)(ses_softc_t *, int);
	int (*init_enc)(ses_softc_t *);
	int (*get_encstat)(ses_softc_t *, ses_encstat *);
	int (*set_encstat)(ses_softc_t *, ses_encstat *, int);
	int (*get_objstat)(ses_softc_t *, ses_objstat *, int);
	int (*set_objstat)(ses_softc_t *, ses_objstat *, int);
} encvec;

#define	ENCI_SVALID	0x80

typedef struct {
	u_int32_t
		enctype	: 8,		/* enclosure type */
		subenclosure : 8,	/* subenclosure id */
		svalid	: 1,		/* enclosure information valid */
		priv	: 15;		/* private data, per object */
	u_int8_t	encstat[4];	/* state && stats */
} encobj;

#if	defined(_KERNEL) || defined(KERNEL)
enctyp ses_type __P((void *, int));
#endif