208 lines
6.8 KiB
C
208 lines
6.8 KiB
C
/* $NetBSD: siopvar.h,v 1.16 1998/11/19 21:44:37 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Van Jacobson of Lawrence Berkeley Laboratory.
|
|
*
|
|
* 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.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*
|
|
* @(#)siopvar.h 7.1 (Berkeley) 5/8/90
|
|
*/
|
|
#ifndef _SIOPVAR_H_
|
|
#define _SIOPVAR_H_
|
|
|
|
/*
|
|
* The largest single request will be MAXPHYS bytes which will require
|
|
* at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of
|
|
* the buffer pages are physically contiguous (MAXPHYS/NBPG) and the
|
|
* buffer is not page aligned (+1).
|
|
*/
|
|
#define DMAMAXIO (MAXPHYS/NBPG+1)
|
|
|
|
/*
|
|
* Data Structure for SCRIPTS program
|
|
*/
|
|
struct siop_ds {
|
|
long scsi_addr; /* SCSI ID & sync */
|
|
long idlen; /* Identify message */
|
|
char *idbuf;
|
|
long cmdlen; /* SCSI command */
|
|
char *cmdbuf;
|
|
long stslen; /* Status */
|
|
char *stsbuf;
|
|
long msglen; /* Message */
|
|
char *msgbuf;
|
|
long msginlen; /* Message in */
|
|
char *msginbuf;
|
|
long extmsglen; /* Extended message in */
|
|
char *extmsgbuf;
|
|
long synmsglen; /* Sync transfer request */
|
|
char *synmsgbuf;
|
|
struct {
|
|
long datalen;
|
|
char *databuf;
|
|
} chain[DMAMAXIO];
|
|
};
|
|
|
|
/*
|
|
* ACB. Holds additional information for each SCSI command Comments: We
|
|
* need a separate scsi command block because we may need to overwrite it
|
|
* with a request sense command. Basicly, we refrain from fiddling with
|
|
* the scsi_xfer struct (except do the expected updating of return values).
|
|
* We'll generally update: xs->{flags,resid,error,sense,status} and
|
|
* occasionally xs->retries.
|
|
*/
|
|
struct siop_acb {
|
|
TAILQ_ENTRY(siop_acb) chain;
|
|
struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */
|
|
int flags; /* Status */
|
|
#define ACB_FREE 0x00
|
|
#define ACB_ACTIVE 0x01
|
|
#define ACB_DONE 0x04
|
|
#define ACB_CHKSENSE 0x08
|
|
struct scsi_generic cmd; /* SCSI command block */
|
|
struct siop_ds ds;
|
|
void *iob_buf;
|
|
u_long iob_curbuf;
|
|
u_long iob_len, iob_curlen;
|
|
u_char msgout[6];
|
|
u_char msg[6];
|
|
u_char stat[1];
|
|
u_char status;
|
|
u_char dummy[2];
|
|
int clen;
|
|
char *daddr; /* Saved data pointer */
|
|
int dleft; /* Residue */
|
|
};
|
|
|
|
/*
|
|
* Some info about each (possible) target on the SCSI bus. This should
|
|
* probably have been a "per target+lunit" structure, but we'll leave it at
|
|
* this for now. Is there a way to reliably hook it up to sc->fordriver??
|
|
*/
|
|
struct siop_tinfo {
|
|
int cmds; /* #commands processed */
|
|
int dconns; /* #disconnects */
|
|
int touts; /* #timeouts */
|
|
int perrs; /* #parity errors */
|
|
int senses; /* #request sense commands sent */
|
|
ushort lubusy; /* What local units/subr. are busy? */
|
|
u_char flags;
|
|
u_char period; /* Period suggestion */
|
|
u_char offset; /* Offset suggestion */
|
|
} tinfo_t;
|
|
|
|
struct siop_softc {
|
|
struct device sc_dev;
|
|
struct isr sc_isr;
|
|
|
|
u_char sc_istat;
|
|
u_char sc_dstat;
|
|
u_char sc_sstat0;
|
|
u_char sc_sstat1;
|
|
u_long sc_intcode;
|
|
struct scsipi_link sc_link; /* proto for sub devices */
|
|
struct scsipi_adapter sc_adapter;
|
|
u_long sc_scriptspa; /* physical address of scripts */
|
|
siop_regmap_p sc_siopp; /* the SIOP */
|
|
u_long sc_active; /* number of active I/O's */
|
|
|
|
/* Lists of command blocks */
|
|
TAILQ_HEAD(acb_list, siop_acb) free_list,
|
|
ready_list,
|
|
nexus_list;
|
|
|
|
struct siop_acb *sc_nexus; /* current command */
|
|
#define SIOP_NACB 8
|
|
struct siop_acb *sc_acb; /* the real command blocks */
|
|
struct siop_tinfo sc_tinfo[8];
|
|
|
|
u_short sc_clock_freq;
|
|
u_char sc_dcntl;
|
|
u_char sc_ctest7;
|
|
u_short sc_tcp[4];
|
|
u_char sc_flags;
|
|
u_char sc_sien;
|
|
u_char sc_dien;
|
|
u_char sc_minsync;
|
|
/* one for each target */
|
|
struct syncpar {
|
|
u_char state;
|
|
u_char sxfer;
|
|
u_char sbcl;
|
|
} sc_sync[8];
|
|
};
|
|
|
|
/* sc_flags */
|
|
#define SIOP_INTSOFF 0x80 /* Interrupts turned off */
|
|
#define SIOP_INTDEFER 0x40 /* Level 6 interrupt has been deferred */
|
|
#define SIOP_ALIVE 0x01 /* controller initialized */
|
|
#define SIOP_SELECTED 0x04 /* bus is in selected state. Needed for
|
|
correct abort procedure. */
|
|
|
|
/* sync states */
|
|
#define SYNC_START 0 /* no sync handshake started */
|
|
#define SYNC_SENT 1 /* we sent sync request, no answer yet */
|
|
#define SYNC_DONE 2 /* target accepted our (or inferior) settings,
|
|
or it rejected the request and we stay async */
|
|
|
|
#define MSG_CMD_COMPLETE 0x00
|
|
#define MSG_EXT_MESSAGE 0x01
|
|
#define MSG_SAVE_DATA_PTR 0x02
|
|
#define MSG_RESTORE_PTR 0x03
|
|
#define MSG_DISCONNECT 0x04
|
|
#define MSG_INIT_DETECT_ERROR 0x05
|
|
#define MSG_ABORT 0x06
|
|
#define MSG_REJECT 0x07
|
|
#define MSG_NOOP 0x08
|
|
#define MSG_PARITY_ERROR 0x09
|
|
#define MSG_BUS_DEVICE_RESET 0x0C
|
|
#define MSG_IDENTIFY 0x80
|
|
#define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */
|
|
#define MSG_SYNC_REQ 0x01
|
|
|
|
#define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */
|
|
#define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */
|
|
#define STS_BUSY 0x08
|
|
#define STS_INTERMED 0x10 /* Intermediate status sent */
|
|
#define STS_EXT 0x80 /* Extended status valid */
|
|
|
|
void siop_minphys __P((struct buf *bp));
|
|
int siop_scsicmd __P((struct scsipi_xfer *));
|
|
void siopinitialize __P((struct siop_softc *));
|
|
void siopintr __P((struct siop_softc *));
|
|
#ifdef DEBUG
|
|
void siop_dump __P((struct siop_softc *));
|
|
#endif
|
|
|
|
#endif /* _SIOPVAR_H */
|