xdvar.h revision 1.1
1 /* $NetBSD: xdvar.h,v 1.1 1997/11/01 22:56:28 pk Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * x d v a r . h 36 * 37 * this file defines the software structure we use to control the 38 * 753/7053. 39 * 40 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 41 */ 42 43 /* 44 * i/o request: wrapper for hardware's iopb data structure 45 */ 46 47 struct xd_iorq { 48 struct xd_iopb *iopb; /* address of matching iopb */ 49 struct xdc_softc *xdc; /* who we are working with */ 50 struct xd_softc *xd; /* which disk */ 51 int ttl; /* time to live */ 52 int mode; /* current mode (state+other data) */ 53 int tries; /* number of times we have tried it */ 54 int errno; /* error number if we fail */ 55 int lasterror; /* last error we got */ 56 int blockno; /* starting block no for this xfer */ 57 int sectcnt; /* number of sectors in xfer */ 58 char *dbuf; /* KVA of data buffer (advances) */ 59 char *dbufbase; /* base of dbuf */ 60 struct buf *buf; /* for NORM */ 61 }; 62 63 /* 64 * state 65 */ 66 67 #define XD_SUB_MASK 0xf0 /* mask bits for state */ 68 #define XD_SUB_FREE 0x00 /* free */ 69 #define XD_SUB_NORM 0x10 /* normal I/O request */ 70 #define XD_SUB_WAIT 0x20 /* normal I/O request in the 71 context of a process */ 72 #define XD_SUB_POLL 0x30 /* polled mode */ 73 #define XD_SUB_DONE 0x40 /* not active, but can't be free'd yet */ 74 #define XD_SUB_NOQ 0x50 /* don't queue, just submit (internal) */ 75 76 #define XD_STATE(X) ((X) & XD_SUB_MASK) /* extract state from mode */ 77 #define XD_NEWSTATE(OLD, NEW) (((OLD) & ~XD_SUB_MASK) |(NEW)) /* new state */ 78 79 80 /* 81 * other mode data 82 */ 83 84 #define XD_MODE_VERBO 0x08 /* print error messages */ 85 #define XD_MODE_B144 0x04 /* handling a bad144 sector */ 86 87 88 /* 89 * software timers and flags 90 */ 91 92 #define XDC_SUBWAITLIM 4 /* max number of "done" IOPBs there can be 93 where we still allow a SUB_WAIT command */ 94 #define XDC_TICKCNT (5*hz) /* call xdc_tick on this interval (5 sec) */ 95 #define XDC_MAXTTL 2 /* max number of xd ticks to live */ 96 #define XDC_NOUNIT (-1) /* for xdcmd: no unit number */ 97 98 /* 99 * a "xd_softc" structure contains per-disk state info. 100 */ 101 102 struct xd_softc { 103 struct device sc_dev; /* device struct, reqd by autoconf */ 104 struct disk sc_dk; /* generic disk info */ 105 struct xdc_softc *parent; /* parent */ 106 u_short flags; /* flags */ 107 u_short state; /* device state */ 108 int xd_drive; /* unit number */ 109 /* geometry */ 110 u_short ncyl, acyl, pcyl; /* number of cyl's */ 111 u_short sectpercyl; /* nhead*nsect */ 112 u_char nhead; /* number of heads */ 113 u_char nsect; /* number of sectors per track */ 114 u_char hw_spt; /* as above, but includes spare sectors */ 115 struct dkbad dkb; /* bad144 sectors */ 116 }; 117 118 /* 119 * flags 120 */ 121 #define XD_WLABEL 0x0001 /* write label */ 122 123 /* 124 * state 125 */ 126 #define XD_DRIVE_UNKNOWN 0 /* never talked to it */ 127 #define XD_DRIVE_ATTACHING 1 /* attach in progress */ 128 #define XD_DRIVE_NOLABEL 2 /* drive on-line, no label */ 129 #define XD_DRIVE_ONLINE 3 /* drive is on-line */ 130 131 /* 132 * a "xdc_softc" structure contains per-disk-controller state info, 133 * including a list of active controllers. 134 */ 135 136 struct xdc_softc { 137 struct device sc_dev; /* device struct, reqd by autoconf */ 138 struct evcnt sc_intrcnt; /* event counter (for vmstat -i) */ 139 140 struct xdc *xdc; /* vaddr of vme registers */ 141 142 struct xd_softc *sc_drives[XDC_MAXDEV]; /* drives on this controller */ 143 int ipl; /* interrupt level */ 144 int vector; /* interrupt vector */ 145 146 struct xd_iorq *reqs; /* i/o requests */ 147 struct xd_iopb *iopbase; /* iopb base addr (maps iopb->iorq) */ 148 struct xd_iopb *dvmaiopb; /* iopb base in DVMA space, not kvm */ 149 struct buf sc_wq; /* queue'd IOPBs for this controller */ 150 char freereq[XDC_MAXIOPB]; /* free list (stack) */ 151 char waitq[XDC_MAXIOPB]; /* wait queue */ 152 u_char nfree; /* number of iopbs free */ 153 u_char nrun; /* number running */ 154 u_char nwait; /* number of waiting iopbs */ 155 u_char ndone; /* number of done IORQs */ 156 u_char waithead; /* head of queue */ 157 u_char waitend; /* end of queue */ 158 }; 159 160 /* 161 * reset blast modes 162 */ 163 164 #define XD_RSET_NONE (-1) /* restart all requests */ 165 #define XD_RSET_ALL (-2) /* don't restart anything */ 166
Indexes created Thu Sep 25 06:09:39 GMT 2025