Annotation of sys/arch/sparc/dev/xdvar.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: xdvar.h,v 1.6 2004/09/29 07:35:11 miod Exp $ */
! 2: /* $NetBSD: xdvar.h,v 1.5 1996/03/31 22:38:56 pk Exp $ */
! 3:
! 4: /*
! 5: *
! 6: * Copyright (c) 1995 Charles D. Cranor
! 7: * All rights reserved.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: * 3. All advertising materials mentioning features or use of this software
! 18: * must display the following acknowledgement:
! 19: * This product includes software developed by Charles D. Cranor.
! 20: * 4. The name of the author may not be used to endorse or promote products
! 21: * derived from this software without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 28: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 29: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 30: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 31: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 32: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 33: */
! 34:
! 35: /*
! 36: * x d v a r . h
! 37: *
! 38: * this file defines the software structure we use to control the
! 39: * 753/7053.
! 40: *
! 41: * author: Chuck Cranor <chuck@ccrc.wustl.edu>
! 42: */
! 43:
! 44: /*
! 45: * i/o request: wrapper for hardware's iopb data structure
! 46: */
! 47:
! 48: struct xd_iorq {
! 49: struct xd_iopb *iopb; /* address of matching iopb */
! 50: struct xdc_softc *xdc; /* who we are working with */
! 51: struct xd_softc *xd; /* which disk */
! 52: int ttl; /* time to live */
! 53: int mode; /* current mode (state+other data) */
! 54: int tries; /* number of times we have tried it */
! 55: int errno; /* error number if we fail */
! 56: int lasterror; /* last error we got */
! 57: int blockno; /* starting block no for this xfer */
! 58: int sectcnt; /* number of sectors in xfer */
! 59: char *dbuf; /* KVA of data buffer (advances) */
! 60: char *dbufbase; /* base of dbuf */
! 61: struct buf *buf; /* for NORM */
! 62: };
! 63:
! 64: /*
! 65: * state
! 66: */
! 67:
! 68: #define XD_SUB_MASK 0xf0 /* mask bits for state */
! 69: #define XD_SUB_FREE 0x00 /* free */
! 70: #define XD_SUB_NORM 0x10 /* normal I/O request */
! 71: #define XD_SUB_WAIT 0x20 /* normal I/O request in the
! 72: context of a process */
! 73: #define XD_SUB_POLL 0x30 /* polled mode */
! 74: #define XD_SUB_DONE 0x40 /* not active, but can't be free'd yet */
! 75: #define XD_SUB_NOQ 0x50 /* don't queue, just submit (internal) */
! 76:
! 77: #define XD_STATE(X) ((X) & XD_SUB_MASK) /* extract state from mode */
! 78: #define XD_NEWSTATE(OLD, NEW) (((OLD) & ~XD_SUB_MASK) |(NEW)) /* new state */
! 79:
! 80:
! 81: /*
! 82: * other mode data
! 83: */
! 84:
! 85: #define XD_MODE_VERBO 0x08 /* print error messages */
! 86: #define XD_MODE_B144 0x04 /* handling a bad144 sector */
! 87:
! 88:
! 89: /*
! 90: * software timers and flags
! 91: */
! 92:
! 93: #define XDC_SUBWAITLIM 4 /* max number of "done" IOPBs there can be
! 94: where we still allow a SUB_WAIT command */
! 95: #define XDC_TICKCNT (5*hz) /* call xdc_tick on this interval (5 sec) */
! 96: #define XDC_MAXTTL 2 /* max number of xd ticks to live */
! 97: #define XDC_NOUNIT (-1) /* for xdcmd: no unit number */
! 98:
! 99: /*
! 100: * a "xd_softc" structure contains per-disk state info.
! 101: */
! 102:
! 103: struct xd_softc {
! 104: struct device sc_dev; /* device struct, reqd by autoconf */
! 105: struct disk sc_dk; /* generic disk info */
! 106: struct xdc_softc *parent; /* parent */
! 107: u_short flags; /* flags */
! 108: u_short state; /* device state */
! 109: int xd_drive; /* unit number */
! 110: /* geometry */
! 111: u_short ncyl, acyl, pcyl; /* number of cyl's */
! 112: u_short sectpercyl; /* nhead*nsect */
! 113: u_char nhead; /* number of heads */
! 114: u_char nsect; /* number of sectors per track */
! 115: u_char hw_spt; /* as above, but includes spare sectors */
! 116: struct dkbad dkb; /* bad144 sectors */
! 117: };
! 118:
! 119: /*
! 120: * flags
! 121: */
! 122:
! 123: #define XD_WLABEL 0x0001 /* write label */
! 124: /*
! 125: * state
! 126: */
! 127:
! 128: #define XD_DRIVE_UNKNOWN 0 /* never talked to it */
! 129: #define XD_DRIVE_ATTACHING 1 /* attach in progress */
! 130: #define XD_DRIVE_NOLABEL 2 /* drive on-line, no label */
! 131: #define XD_DRIVE_ONLINE 3 /* drive is on-line */
! 132:
! 133: /*
! 134: * a "xdc_softc" structure contains per-disk-controller state info,
! 135: * including a list of active controllers.
! 136: */
! 137:
! 138: struct xdc_softc {
! 139: struct device sc_dev; /* device struct, reqd by autoconf */
! 140: struct intrhand sc_ih; /* interrupt info */
! 141:
! 142: struct xdc *xdc; /* vaddr of vme registers */
! 143:
! 144: struct xd_softc *sc_drives[XDC_MAXDEV]; /* drives on this controller */
! 145: int ipl; /* interrupt level */
! 146: int vector; /* interrupt vector */
! 147:
! 148: struct xd_iorq *reqs; /* i/o requests */
! 149: struct xd_iopb *iopbase; /* iopb base addr (maps iopb->iorq) */
! 150: struct xd_iopb *dvmaiopb; /* iopb base in DVMA space, not kvm */
! 151: struct buf sc_wq; /* queue'd 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: struct timeout xdc_tick_tmo; /* for xdc_tick() */
! 161: };
! 162:
! 163: /*
! 164: * reset blast modes
! 165: */
! 166:
! 167: #define XD_RSET_NONE (-1) /* restart all requests */
! 168: #define XD_RSET_ALL (-2) /* don't restart anything */
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