FreeBSD/Linux Kernel Cross Reference
sys/dev/ldvar.h
1 /* $NetBSD: ldvar.h,v 1.15 2008/09/09 12:45:39 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _DEV_LDVAR_H_
33 #define _DEV_LDVAR_H_
34
35 #include <sys/mutex.h>
36
37 struct ld_softc {
38 struct device *sc_dv;
39 struct disk sc_dk;
40 struct bufq_state *sc_bufq;
41 kmutex_t sc_mutex;
42 #if NRND > 0
43 rndsource_element_t sc_rnd_source;
44 #endif
45 int sc_queuecnt; /* current h/w queue depth */
46 int sc_ncylinders; /* # cylinders */
47 int sc_nheads; /* # heads */
48 int sc_nsectors; /* # sectors per track */
49
50 /*
51 * The following are filled by hardware specific attachment code.
52 */
53 int sc_flags; /* control flags */
54 uint64_t sc_secperunit; /* # sectors in total */
55 int sc_secsize; /* sector size in bytes */
56 int sc_maxxfer; /* max xfer size in bytes */
57 int sc_maxqueuecnt; /* maximum h/w queue depth */
58
59 int (*sc_dump)(struct ld_softc *, void *, int, int);
60 int (*sc_flush)(struct ld_softc *, int);
61 int (*sc_start)(struct ld_softc *, struct buf *);
62 };
63
64 /* sc_flags */
65 #define LDF_ENABLED 0x001 /* device enabled */
66 #define LDF_WLABEL 0x008 /* label is writable */
67 #define LDF_LABELLING 0x010 /* writing label */
68 #define LDF_DRAIN 0x020 /* maxqueuecnt has changed; drain */
69 #define LDF_DETACH 0x040 /* detach pending */
70 #define LDF_KLABEL 0x080 /* keep label on close */
71 #define LDF_VLABEL 0x100 /* label is valid */
72
73 /* sc_flush() flags */
74 #define LDFL_POLL 0x001 /* poll for completion */
75
76 int ldadjqparam(struct ld_softc *, int);
77 void ldattach(struct ld_softc *);
78 int ldbegindetach(struct ld_softc *, int);
79 void ldenddetach(struct ld_softc *);
80 void lddone(struct ld_softc *, struct buf *);
81
82 #endif /* !_DEV_LDVAR_H_ */
Cache object: aef8a669965a719eaeffdfe8b0db8d90
|