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/* $NetBSD: xyvar.h,v 1.2 1996/01/07 22:03:06 thorpej Exp $ */
/*
*
* Copyright (c) 1995 Charles D. Cranor
* 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.
* 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 Charles D. Cranor.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
/*
* x y v a r . h
*
* this file defines the software structure we use to control the
* 450/451.
*
* author: Chuck Cranor <chuck@ccrc.wustl.edu>
*/
/*
* i/o request: wrapper for hardware's iopb data structure
*/
struct xy_iorq {
struct xy_iopb *iopb; /* address of matching iopb */
struct xyc_softc *xyc; /* who we are working with */
struct xy_softc *xy; /* which disk */
int ttl; /* time to live */
int mode; /* current mode (state+other data) */
int tries; /* number of times we have tried it */
int errno; /* error number if we fail */
int lasterror; /* last error we got */
int blockno; /* starting block no for this xfer */
int sectcnt; /* number of sectors in xfer */
char *dbuf; /* KVA of data buffer (advances) */
char *dbufbase; /* base of dbuf */
struct buf *buf; /* for NORM */
};
/*
* state
*/
#define XY_SUB_MASK 0xf0 /* mask bits for state */
#define XY_SUB_FREE 0x00 /* free */
#define XY_SUB_NORM 0x10 /* normal I/O request */
#define XY_SUB_WAIT 0x20 /* normal I/O request in the
context of a process */
#define XY_SUB_POLL 0x30 /* polled mode */
#define XY_SUB_DONE 0x40 /* not active, but can't be free'd yet */
#define XY_SUB_NOQ 0x50 /* don't queue, just submit (internal) */
#define XY_STATE(X) ((X) & XY_SUB_MASK) /* extract state from mode */
#define XY_NEWSTATE(OLD, NEW) (((OLD) & ~XY_SUB_MASK) |(NEW)) /* new state */
/*
* other mode data
*/
#define XY_MODE_VERBO 0x08 /* print error messages */
#define XY_MODE_B144 0x04 /* handling a bad144 sector */
/*
* software timers and flags
*/
#define XYC_SUBWAITLIM 4 /* max number of "done" IOPBs there can be
where we still allow a SUB_WAIT command */
#define XYC_TICKCNT (5*hz) /* call xyc_tick on this interval (5 sec) */
#define XYC_MAXTTL 2 /* max number of xy ticks to live */
#define XYC_NOUNIT (-1) /* for xycmd: no unit number */
/*
* a "xy_softc" structure contains per-disk state info.
*/
struct xy_softc {
struct device sc_dev; /* device struct, reqd by autoconf */
struct disk sc_dk; /* generic disk info */
struct xyc_softc *parent; /* parent */
u_short flags; /* flags */
u_short state; /* device state */
int xy_drive; /* unit number */
int drive_type; /* drive type (as per disk) */
/* geometry */
u_short ncyl, acyl, pcyl; /* number of cyl's */
u_short sectpercyl; /* nhead*nsect */
u_char nhead; /* number of heads */
u_char nsect; /* number of sectors per track */
u_char hw_spt; /* as above, but includes spare sectors */
struct xy_iorq *xyrq; /* this disk's ioreq structure */
struct buf xyq; /* queue'd I/O requests */
struct dkbad dkb; /* bad144 sectors */
};
/*
* flags
*/
#define XY_WLABEL 0x0001 /* write label */
/*
* state
*/
#define XY_DRIVE_UNKNOWN 0 /* never talked to it */
#define XY_DRIVE_ATTACHING 1 /* attach in progress */
#define XY_DRIVE_NOLABEL 2 /* drive on-line, no label */
#define XY_DRIVE_ONLINE 3 /* drive is on-line */
/*
* a "xyc_softc" structure contains per-disk-controller state info,
* including a list of active controllers.
*/
struct xyc_softc {
struct device sc_dev; /* device struct, reqd by autoconf */
struct intrhand sc_ih; /* interrupt info */
struct evcnt sc_intrcnt; /* event counter (for vmstat -i) */
struct xyc *xyc; /* vaddr of vme registers */
struct xy_softc *sc_drives[XYC_MAXDEV]; /* drives on this controller */
int ipl; /* interrupt level */
int vector; /* interrupt vector */
struct xy_iorq *reqs; /* i/o requests */
struct xy_iopb *iopbase; /* iopb base addr (maps iopb->iorq) */
struct xy_iopb *dvmaiopb; /* iopb base in DVMA space, not kvm */
struct xy_iorq *ciorq; /* controller's iorq */
struct xy_iopb *ciopb; /* controller's iopb */
int xy_hand; /* hand */
struct xy_iorq *xy_chain[XYC_MAXIOPB];
/* current chain */
int no_ols; /* disable overlap seek for stupid 450s */
};
/*
* reset blast modes
*/
#define XY_RSET_NONE (struct xy_iorq *)(-1) /* restart all requests */
#define XY_RSET_ALL (struct xy_iorq *)(-2) /* don't restart anything */
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