Annotation of sys/arch/sparc/dev/xyvar.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: xyvar.h,v 1.6 2004/09/29 07:35:12 miod Exp $ */
! 2: /* $NetBSD: xyvar.h,v 1.4 1996/03/31 22:39:04 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 y v a r . h
! 37: *
! 38: * this file defines the software structure we use to control the
! 39: * 450/451.
! 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 xy_iorq {
! 49: struct xy_iopb *iopb; /* address of matching iopb */
! 50: struct xyc_softc *xyc; /* who we are working with */
! 51: struct xy_softc *xy; /* 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 XY_SUB_MASK 0xf0 /* mask bits for state */
! 69: #define XY_SUB_FREE 0x00 /* free */
! 70: #define XY_SUB_NORM 0x10 /* normal I/O request */
! 71: #define XY_SUB_WAIT 0x20 /* normal I/O request in the
! 72: context of a process */
! 73: #define XY_SUB_POLL 0x30 /* polled mode */
! 74: #define XY_SUB_DONE 0x40 /* not active, but can't be free'd yet */
! 75: #define XY_SUB_NOQ 0x50 /* don't queue, just submit (internal) */
! 76:
! 77: #define XY_STATE(X) ((X) & XY_SUB_MASK) /* extract state from mode */
! 78: #define XY_NEWSTATE(OLD, NEW) (((OLD) & ~XY_SUB_MASK) |(NEW)) /* new state */
! 79:
! 80:
! 81: /*
! 82: * other mode data
! 83: */
! 84:
! 85: #define XY_MODE_VERBO 0x08 /* print error messages */
! 86: #define XY_MODE_B144 0x04 /* handling a bad144 sector */
! 87:
! 88:
! 89: /*
! 90: * software timers and flags
! 91: */
! 92:
! 93: #define XYC_SUBWAITLIM 4 /* max number of "done" IOPBs there can be
! 94: where we still allow a SUB_WAIT command */
! 95: #define XYC_TICKCNT (5*hz) /* call xyc_tick on this interval (5 sec) */
! 96: #define XYC_MAXTTL 2 /* max number of xy ticks to live */
! 97: #define XYC_NOUNIT (-1) /* for xycmd: no unit number */
! 98:
! 99: /*
! 100: * a "xy_softc" structure contains per-disk state info.
! 101: */
! 102:
! 103: struct xy_softc {
! 104: struct device sc_dev; /* device struct, reqd by autoconf */
! 105: struct disk sc_dk; /* generic disk info */
! 106: struct xyc_softc *parent; /* parent */
! 107: u_short flags; /* flags */
! 108: u_short state; /* device state */
! 109: int xy_drive; /* unit number */
! 110: int drive_type; /* drive type (as per disk) */
! 111: /* geometry */
! 112: u_short ncyl, acyl, pcyl; /* number of cyl's */
! 113: u_short sectpercyl; /* nhead*nsect */
! 114: u_char nhead; /* number of heads */
! 115: u_char nsect; /* number of sectors per track */
! 116: u_char hw_spt; /* as above, but includes spare sectors */
! 117: struct xy_iorq *xyrq; /* this disk's ioreq structure */
! 118: struct buf xyq; /* queue'd I/O requests */
! 119: struct dkbad dkb; /* bad144 sectors */
! 120: };
! 121:
! 122: /*
! 123: * flags
! 124: */
! 125:
! 126: #define XY_WLABEL 0x0001 /* write label */
! 127: /*
! 128: * state
! 129: */
! 130:
! 131: #define XY_DRIVE_UNKNOWN 0 /* never talked to it */
! 132: #define XY_DRIVE_ATTACHING 1 /* attach in progress */
! 133: #define XY_DRIVE_NOLABEL 2 /* drive on-line, no label */
! 134: #define XY_DRIVE_ONLINE 3 /* drive is on-line */
! 135:
! 136: /*
! 137: * a "xyc_softc" structure contains per-disk-controller state info,
! 138: * including a list of active controllers.
! 139: */
! 140:
! 141: struct xyc_softc {
! 142: struct device sc_dev; /* device struct, reqd by autoconf */
! 143: struct intrhand sc_ih; /* interrupt info */
! 144:
! 145: struct xyc *xyc; /* vaddr of vme registers */
! 146:
! 147: struct xy_softc *sc_drives[XYC_MAXDEV]; /* drives on this controller */
! 148: int ipl; /* interrupt level */
! 149: int vector; /* interrupt vector */
! 150:
! 151: struct xy_iorq *reqs; /* i/o requests */
! 152: struct xy_iopb *iopbase; /* iopb base addr (maps iopb->iorq) */
! 153: struct xy_iopb *dvmaiopb; /* iopb base in DVMA space, not kvm */
! 154:
! 155: struct xy_iorq *ciorq; /* controller's iorq */
! 156: struct xy_iopb *ciopb; /* controller's iopb */
! 157:
! 158: int xy_hand; /* hand */
! 159: struct xy_iorq *xy_chain[XYC_MAXIOPB];
! 160: /* current chain */
! 161: int no_ols; /* disable overlap seek for stupid 450s */
! 162: struct timeout xyc_tick_tmo; /* for xyc_tick() */
! 163: };
! 164:
! 165: /*
! 166: * reset blast modes
! 167: */
! 168:
! 169: #define XY_RSET_NONE (struct xy_iorq *)(-1) /* restart all requests */
! 170: #define XY_RSET_ALL (struct xy_iorq *)(-2) /* don't restart anything */
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