xdvar.h revision 1.13
1 /* $NetBSD: xdvar.h,v 1.13 2012/10/27 17:18:38 chs Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Charles D. Cranor 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * x d v a r . h 30 * 31 * this file defines the software structure we use to control the 32 * 753/7053. 33 * 34 * author: Chuck Cranor <chuck@netbsd> 35 */ 36 37 #include <sys/callout.h> 38 39 /* 40 * i/o request: wrapper for hardware's iopb data structure 41 */ 42 43 struct xd_iorq { 44 struct xd_iopb *iopb; /* address of matching iopb */ 45 struct xd_iopb *dmaiopb; /* DMA address of above */ 46 struct xdc_softc *xdc; /* who we are working with */ 47 struct xd_softc *xd; /* which disk */ 48 int ttl; /* time to live */ 49 int mode; /* current mode (state+other data) */ 50 int tries; /* number of times we have tried it */ 51 int errnum; /* error number if we fail */ 52 int lasterror; /* last error we got */ 53 int blockno; /* starting block no for this xfer */ 54 int sectcnt; /* number of sectors in xfer */ 55 char *dbuf; /* KVA of data buffer (advances) */ 56 struct buf *buf; /* for NORM */ 57 bus_dmamap_t dmamap; /* DMA I/O handle */ 58 }; 59 60 /* 61 * state 62 */ 63 64 #define XD_SUB_MASK 0xf0 /* mask bits for state */ 65 #define XD_SUB_FREE 0x00 /* free */ 66 #define XD_SUB_NORM 0x10 /* normal I/O request */ 67 #define XD_SUB_WAIT 0x20 /* normal I/O request in the 68 context of a process */ 69 #define XD_SUB_POLL 0x30 /* polled mode */ 70 #define XD_SUB_DONE 0x40 /* not active, but can't be free'd yet */ 71 #define XD_SUB_NOQ 0x50 /* don't queue, just submit (internal) */ 72 73 #define XD_STATE(X) ((X) & XD_SUB_MASK) /* extract state from mode */ 74 #define XD_NEWSTATE(OLD, NEW) (((OLD) & ~XD_SUB_MASK) |(NEW)) /* new state */ 75 76 77 /* 78 * other mode data 79 */ 80 81 #define XD_MODE_VERBO 0x08 /* print error messages */ 82 #define XD_MODE_B144 0x04 /* handling a bad144 sector */ 83 84 85 /* 86 * software timers and flags 87 */ 88 89 #define XDC_SUBWAITLIM 4 /* max number of "done" IOPBs there can be 90 where we still allow a SUB_WAIT command */ 91 #define XDC_TICKCNT (5*hz) /* call xdc_tick on this interval (5 sec) */ 92 #define XDC_MAXTTL 2 /* max number of xd ticks to live */ 93 #define XDC_NOUNIT (-1) /* for xdcmd: no unit number */ 94 95 /* 96 * a "xd_softc" structure contains per-disk state info. 97 */ 98 99 struct xd_softc { 100 device_t sc_dev; /* device struct, reqd by autoconf */ 101 struct disk sc_dk; /* generic disk info */ 102 struct xdc_softc *parent; /* parent */ 103 u_short flags; /* flags */ 104 u_short state; /* device state */ 105 int xd_drive; /* unit number */ 106 /* geometry */ 107 u_short ncyl, acyl, pcyl; /* number of cyl's */ 108 u_short sectpercyl; /* nhead*nsect */ 109 u_char nhead; /* number of heads */ 110 u_char nsect; /* number of sectors per track */ 111 u_char hw_spt; /* as above, but includes spare sectors */ 112 struct dkbad dkb; /* bad144 sectors */ 113 }; 114 115 /* 116 * flags 117 */ 118 #define XD_WLABEL 0x0001 /* write label */ 119 120 /* 121 * state 122 */ 123 #define XD_DRIVE_UNKNOWN 0 /* never talked to it */ 124 #define XD_DRIVE_ATTACHING 1 /* attach in progress */ 125 #define XD_DRIVE_NOLABEL 2 /* drive on-line, no label */ 126 #define XD_DRIVE_ONLINE 3 /* drive is on-line */ 127 128 /* 129 * a "xdc_softc" structure contains per-disk-controller state info, 130 * including a list of active controllers. 131 */ 132 133 struct xdc_softc { 134 device_t sc_dev; /* device struct, reqd by autoconf */ 135 struct evcnt sc_intrcnt; /* event counter (for vmstat -i) */ 136 137 struct callout sc_tick_ch; 138 139 struct xdc *xdc; /* vaddr of vme registers */ 140 141 struct xd_softc *sc_drives[XDC_MAXDEV]; /* drives on this controller */ 142 int ipl; /* interrupt level */ 143 int vector; /* interrupt vector */ 144 bus_dma_tag_t dmatag; /* Bus DMA tag */ 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 bus_dmamap_t iopmap; /* IOPB DMA handle */ 150 bus_dmamap_t auxmap; /* auxiliary DMA handle */ 151 struct bufq_state *sc_wq; /* queued IOPBs for this controller */ 152 char freereq[XDC_MAXIOPB]; /* free list (stack) */ 153 char waitq[XDC_MAXIOPB]; /* wait queue */ 154 u_char nfree; /* number of iopbs free */ 155 u_char nrun; /* number running */ 156 u_char nwait; /* number of waiting iopbs */ 157 u_char ndone; /* number of done IORQs */ 158 u_char waithead; /* head of queue */ 159 u_char waitend; /* end of queue */ 160 }; 161 162 /* 163 * reset blast modes 164 */ 165 166 #define XD_RSET_NONE (-1) /* restart all requests */ 167 #define XD_RSET_ALL (-2) /* don't restart anything */ 168
Indexes created Thu Sep 25 16:09:42 GMT 2025