NetBSD/sys/arch/amiga/dev/siopvar.h

155 lines
5.3 KiB
C

/* $NetBSD: siopvar.h,v 1.8 1995/02/12 19:19:29 chopps 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)
struct siop_pending {
TAILQ_ENTRY(siop_pending) link;
struct scsi_xfer *xs;
};
struct siop_ds { /* Data Structure for SCRIPTS */
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];
};
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;
struct scsi_link sc_link; /* proto for sub devices */
siop_regmap_p sc_siopp; /* the SIOP */
volatile void *sc_cregs; /* driver specific regs */
struct scsi_xfer *sc_xs; /* transfer from high level code */
u_long sc_active; /* number of active I/O's */
/* I/O blocks for each active I/O */
struct siop_iob {
struct scsi_xfer *sc_xs;
struct siop_ds sc_ds;
void *iob_buf;
u_long iob_curbuf;
u_long iob_len, iob_curlen;
u_char sc_msgout[6];
u_char sc_msg[6];
u_char sc_stat[1];
u_char sc_status;
u_char sc_dummy[2];
} *sc_cur; /* current I/O block */
struct siop_iob sc_iob[2]; /* I/O blocks */
u_long sc_scriptspa; /* physical address of scripts */
u_long sc_clock_freq;
u_char sc_flags;
u_char sc_slave;
/* one for each target */
struct syncpar {
u_char state;
u_char period, offset;
} sc_sync[8];
TAILQ_HEAD(,siop_pending) sc_xslist; /* LIFO */
struct siop_pending sc_xsstore[8][8]; /* one for every unit */
};
/* sc_flags */
#define SIOP_DMA 0x80 /* DMA I/O in progress */
#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 scsi_xfer *));
#endif /* _SIOPVAR_H */