two siop drivers conflict. rename to ssh -- short for Symbios Scripts Hardware

1 files changed, 203 insertions, 0 deletions

diff --git a/sys/arch/mvme68k/dev/sshvar.h b/sys/arch/mvme68k/dev/sshvar.h
new file mode 100644
index 00000000000..7f4dfac4924
--- /dev/null
+++ b/sys/arch/mvme68k/dev/sshvar.h
@@ -0,0 +1,203 @@
+/*	$OpenBSD: sshvar.h,v 1.1 2001/02/18 17:41:09 deraadt Exp $ */
+
+/*
+ * Copyright (c) 1995 Theo de Raadt
+ * 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.
+ *
+ *	@(#)sshvar.h	7.1 (Berkeley) 5/8/90
+ */
+#ifndef _SSHVAR_H_
+#define _SSHVAR_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 ssh_ds {
+/*00*/	long	scsi_addr;		/* SCSI ID & sync */
+/*04*/	long	idlen;			/* Identify message */
+/*08*/	char	*idbuf;
+/*0c*/	long	cmdlen;			/* SCSI command */
+/*10*/	char	*cmdbuf;
+/*14*/	long	stslen;			/* Status */
+/*18*/	char	*stsbuf;
+/*1c*/	long	msglen;			/* Message */
+/*20*/	char	*msgbuf;
+/*24*/	long	msginlen;		/* Message in */
+/*28*/	char	*msginbuf;
+/*2c*/	long	extmsglen;		/* Extended message in */
+/*30*/	char	*extmsgbuf;
+/*34*/	long	synmsglen;		/* Sync transfer request */
+/*38*/	char	*synmsgbuf;
+	struct {
+/*3c*/		long datalen;
+/*40*/		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 ssh_acb {
+/*00*/	TAILQ_ENTRY(ssh_acb) chain;
+/*08*/	struct scsi_xfer *xs;	/* SCSI xfer ctrl block from above */
+/*0c*/	int		flags;	/* Status */
+#define ACB_FREE	0x00
+#define ACB_ACTIVE	0x01
+#define ACB_DONE	0x04
+#define ACB_CHKSENSE	0x08
+/*10*/	struct scsi_generic cmd;  /* SCSI command block */
+/*1c*/	struct ssh_ds ds;
+/*a0*/	void	*iob_buf;
+/*a4*/	u_long	iob_curbuf;
+/*a8*/	u_long	iob_len, iob_curlen;
+/*b0*/	u_char	msgout[6];
+/*b6*/	u_char	msg[6];
+/*bc*/	u_char	stat[1];
+/*bd*/	u_char	status;
+/*be*/	u_char	dummy[2];
+/*c0*/	int	 clen;
+/*c4*/	char	*daddr;		/* Saved data pointer */
+/*c8*/	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 ssh_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	ssh_softc {
+	struct	device sc_dev;
+	struct	intrhand sc_ih;
+	struct	evcnt sc_intrcnt;
+
+	u_char	sc_istat;
+	u_char	sc_dstat;
+	u_char	sc_sstat0;
+	u_char	sc_sstat1;
+	u_long	sc_intcode;
+	struct	scsi_link sc_link;	/* proto for sub devices */
+	u_long	sc_scriptspa;		/* physical address of scripts */
+	ssh_regmap_p	sc_sshp;	/* the SSH */
+	u_long	sc_active;		/* number of active I/O's */
+
+	/* Lists of command blocks */
+	TAILQ_HEAD(acb_list, ssh_acb) free_list,
+				       ready_list,
+				       nexus_list;
+
+	struct ssh_acb *sc_nexus;	/* current command */
+#define SSH_NACB 8
+	struct ssh_acb *sc_acb;	/* the real command blocks */
+	struct ssh_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	SSH_INTSOFF	0x80	/* Interrupts turned off */
+#define	SSH_INTDEFER	0x40	/* Level 6 interrupt has been deferred */
+#define	SSH_ALIVE	0x01	/* controller initialized */
+#define SSH_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 ssh_minphys __P((struct buf *bp));
+int ssh_scsicmd __P((struct scsi_xfer *));
+
+#endif /* _SSHVAR_H */