Annotation of sys/arch/sparc/dev/xdvar.h, Revision 1.1.1.1
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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