1 /* $NetBSD: ldvar.h,v 1.16 2009/05/07 08:03:23 cegger 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 #include <sys/device.h> /* for device_t */ 37 38 struct ld_softc { 39 device_t sc_dv; 40 struct disk sc_dk; 41 struct bufq_state *sc_bufq; 42 kmutex_t sc_mutex; 43 #if NRND > 0 44 rndsource_element_t sc_rnd_source; 45 #endif 46 int sc_queuecnt; /* current h/w queue depth */ 47 int sc_ncylinders; /* # cylinders */ 48 int sc_nheads; /* # heads */ 49 int sc_nsectors; /* # sectors per track */ 50 51 /* 52 * The following are filled by hardware specific attachment code. 53 */ 54 int sc_flags; /* control flags */ 55 uint64_t sc_secperunit; /* # sectors in total */ 56 int sc_secsize; /* sector size in bytes */ 57 int sc_maxxfer; /* max xfer size in bytes */ 58 int sc_maxqueuecnt; /* maximum h/w queue depth */ 59 60 int (*sc_dump)(struct ld_softc *, void *, int, int); 61 int (*sc_flush)(struct ld_softc *, int); 62 int (*sc_start)(struct ld_softc *, struct buf *); 63 }; 64 65 /* sc_flags */ 66 #define LDF_ENABLED 0x001 /* device enabled */ 67 #define LDF_WLABEL 0x008 /* label is writable */ 68 #define LDF_LABELLING 0x010 /* writing label */ 69 #define LDF_DRAIN 0x020 /* maxqueuecnt has changed; drain */ 70 #define LDF_DETACH 0x040 /* detach pending */ 71 #define LDF_KLABEL 0x080 /* keep label on close */ 72 #define LDF_VLABEL 0x100 /* label is valid */ 73 74 /* sc_flush() flags */ 75 #define LDFL_POLL 0x001 /* poll for completion */ 76 77 int ldadjqparam(struct ld_softc *, int); 78 void ldattach(struct ld_softc *); 79 int ldbegindetach(struct ld_softc *, int); 80 void ldenddetach(struct ld_softc *); 81 void lddone(struct ld_softc *, struct buf *); 82 83 #endif /* !_DEV_LDVAR_H_ */ 84