1 /* $NetBSD: ldvar.h,v 1.17 2009/12/18 00:40:24 jakllsch 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 "rnd.h" 36 37 #include <sys/mutex.h> 38 #include <sys/device.h> /* for device_t */ 39 #if NRND > 0 40 #include <sys/rnd.h> 41 #endif 42 43 struct ld_softc { 44 device_t sc_dv; 45 struct disk sc_dk; 46 struct bufq_state *sc_bufq; 47 kmutex_t sc_mutex; 48 #if NRND > 0 49 rndsource_element_t sc_rnd_source; 50 #endif 51 int sc_queuecnt; /* current h/w queue depth */ 52 int sc_ncylinders; /* # cylinders */ 53 int sc_nheads; /* # heads */ 54 int sc_nsectors; /* # sectors per track */ 55 56 /* 57 * The following are filled by hardware specific attachment code. 58 */ 59 int sc_flags; /* control flags */ 60 uint64_t sc_secperunit; /* # sectors in total */ 61 int sc_secsize; /* sector size in bytes */ 62 int sc_maxxfer; /* max xfer size in bytes */ 63 int sc_maxqueuecnt; /* maximum h/w queue depth */ 64 65 int (*sc_dump)(struct ld_softc *, void *, int, int); 66 int (*sc_flush)(struct ld_softc *, int); 67 int (*sc_start)(struct ld_softc *, struct buf *); 68 }; 69 70 /* sc_flags */ 71 #define LDF_ENABLED 0x001 /* device enabled */ 72 #define LDF_WLABEL 0x008 /* label is writable */ 73 #define LDF_LABELLING 0x010 /* writing label */ 74 #define LDF_DRAIN 0x020 /* maxqueuecnt has changed; drain */ 75 #define LDF_DETACH 0x040 /* detach pending */ 76 #define LDF_KLABEL 0x080 /* keep label on close */ 77 #define LDF_VLABEL 0x100 /* label is valid */ 78 79 /* sc_flush() flags */ 80 #define LDFL_POLL 0x001 /* poll for completion */ 81 82 int ldadjqparam(struct ld_softc *, int); 83 void ldattach(struct ld_softc *); 84 int ldbegindetach(struct ld_softc *, int); 85 void ldenddetach(struct ld_softc *); 86 void lddone(struct ld_softc *, struct buf *); 87 88 #endif /* !_DEV_LDVAR_H_ */ 89