/* $NetBSD: xdvar.h,v 1.13 2026/07/03 21:27:39 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. * * 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 d v a r . h * * this file defines the software structure we use to control the * 753/7053. * * author: Chuck Cranor <chuck@netbsd> */ #include <sys/callout.h> /* * i/o request: wrapper for hardware's iopb data structure */ struct xd_iorq { struct xd_iopb *iopb; /* address of matching iopb */ struct xdc_softc *xdc; /* who we are working with */ struct xd_softc *xd; /* 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 XD_SUB_MASK 0xf0 /* mask bits for state */ #define XD_SUB_FREE 0x00 /* free */ #define XD_SUB_NORM 0x10 /* normal I/O request */ #define XD_SUB_WAIT 0x20 /* normal I/O request in the context of a process */ #define XD_SUB_POLL 0x30 /* polled mode */ #define XD_SUB_DONE 0x40 /* not active, but can't be free'd yet */ #define XD_SUB_NOQ 0x50 /* don't queue, just submit (internal) */ #define XD_STATE(X) ((X) & XD_SUB_MASK) /* extract state from mode */ #define XD_NEWSTATE(OLD, NEW) (((OLD) & ~XD_SUB_MASK) |(NEW)) /* new state */ /* * other mode data */ #define XD_MODE_VERBO 0x08 /* print error messages */ #define XD_MODE_B144 0x04 /* handling a bad144 sector */ /* * software timers and flags */ #define XDC_SUBWAITLIM 4 /* max number of "done" IOPBs there can be where we still allow a SUB_WAIT command */ #define XDC_TICKCNT (5*hz) /* call xdc_tick on this interval (5 sec) */ #define XDC_MAXTTL 2 /* max number of xd ticks to live */ #define XDC_NOUNIT (-1) /* for xdcmd: no unit number */ /* * a "xd_softc" structure contains per-disk state info. */ struct xd_softc { device_t sc_dev; /* device struct, reqd by autoconf */ struct disk sc_dk; /* generic disk info */ struct xdc_softc *parent; /* parent */ u_short flags; /* flags */ u_short state; /* device state */ int xd_drive; /* unit number */ /* 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 bad144_context *bad144; /* bad144 sectors */ }; /* * flags */ #define XD_WLABEL 0x0001 /* write label */ /* * state */ #define XD_DRIVE_UNKNOWN 0 /* never talked to it */ #define XD_DRIVE_ATTACHING 1 /* attach in progress */ #define XD_DRIVE_NOLABEL 2 /* drive on-line, no label */ #define XD_DRIVE_ONLINE 3 /* drive is on-line */ /* * a "xdc_softc" structure contains per-disk-controller state info, * including a list of active controllers. */ struct xdc_softc { device_t sc_dev; /* device struct, reqd by autoconf */ struct evcnt sc_intrcnt; /* event counter (for vmstat -i) */ struct callout sc_tick_ch; struct xdc *xdc; /* vaddr of vme registers */ int bustype; /* from attach args */ int ipl; /* interrupt level */ int vector; /* interrupt vector */ struct xd_softc *sc_drives[XDC_MAXDEV]; /* drives on this controller */ struct xd_iorq *reqs; /* i/o requests */ struct xd_iopb *iopbase; /* iopb base addr (maps iopb->iorq) */ struct xd_iopb *dvmaiopb; /* iopb base in DVMA space, not kvm */ struct bufq_state *sc_wq; /* queue'd IOPBs for this controller */ char freereq[XDC_MAXIOPB]; /* free list (stack) */ char waitq[XDC_MAXIOPB]; /* wait queue */ u_char nfree; /* number of iopbs free */ u_char nrun; /* number running */ u_char nwait; /* number of waiting iopbs */ u_char ndone; /* number of done IORQs */ u_char waithead; /* head of queue */ u_char waitend; /* end of queue */ }; /* * reset blast modes */ #define XD_RSET_NONE (-1) /* restart all requests */ #define XD_RSET_ALL (-2) /* don't restart anything */
