FreeBSD/Linux Kernel Cross Reference
sys/dev/ldvar.h
1 /* $NetBSD: ldvar.h,v 1.7.4.1 2004/07/28 11:26:37 tron Exp $ */
2
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #ifndef _DEV_LDVAR_H_
40 #define _DEV_LDVAR_H_
41
42 struct ld_softc {
43 struct device sc_dv;
44 struct disk sc_dk;
45 struct bufq_state sc_bufq;
46 #if NRND > 0
47 rndsource_element_t sc_rnd_source;
48 #endif
49 int sc_queuecnt; /* current h/w queue depth */
50 int sc_ncylinders; /* # cylinders */
51 int sc_nheads; /* # heads */
52 int sc_nsectors; /* # sectors per track */
53
54 /*
55 * The following are filled by hardware specific attachment code.
56 */
57 int sc_flags; /* control flags */
58 uint64_t sc_secperunit; /* # sectors in total */
59 int sc_secsize; /* sector size in bytes */
60 int sc_maxxfer; /* max xfer size in bytes */
61 int sc_maxqueuecnt; /* maximum h/w queue depth */
62
63 int (*sc_dump)(struct ld_softc *, void *, int, int);
64 int (*sc_flush)(struct ld_softc *);
65 int (*sc_start)(struct ld_softc *, struct buf *);
66 };
67
68 #define LDF_ENABLED 0x001 /* device enabled */
69 #define LDF_LKHELD 0x002 /* lock held */
70 #define LDF_LKWANTED 0x004 /* lock wanted */
71 #define LDF_WLABEL 0x008 /* label is writable */
72 #define LDF_LABELLING 0x010 /* writing label */
73 #define LDF_DRAIN 0x020 /* maxqueuecnt has changed; drain */
74 #define LDF_DETACH 0x040 /* detach pending */
75 #define LDF_KLABEL 0x080 /* keep label on close */
76 #define LDF_VLABEL 0x100 /* label is valid */
77
78 int ldadjqparam(struct ld_softc *, int);
79 void ldattach(struct ld_softc *);
80 int ldbegindetach(struct ld_softc *, int);
81 void ldenddetach(struct ld_softc *);
82 void lddone(struct ld_softc *, struct buf *);
83
84 #endif /* !_DEV_LDVAR_H_ */
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