1 /* $NetBSD: ldvar.h,v 1.37 2025/04/13 02:34:02 rin 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/rndsource.h> 37 38 #include <dev/dkvar.h> /* for dk_softc */ 39 40 struct ld_softc { 41 struct dk_softc sc_dksc; 42 kmutex_t sc_mutex; 43 kcondvar_t sc_drain; 44 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 uint64_t sc_disksize512; 50 51 /* 52 * The following are filled by hardware specific attachment code. 53 */ 54 device_t sc_dv; 55 int sc_flags; /* control flags */ 56 uint64_t sc_secperunit; /* # sectors in total */ 57 int sc_secsize; /* sector size in bytes */ 58 int sc_physsecsize; /* physical sector size in bytes */ 59 uint32_t sc_alignedsec; /* first physically-aligned LBA */ 60 int sc_maxxfer; /* max xfer size in bytes */ 61 int sc_maxqueuecnt; /* maximum h/w queue depth */ 62 char *sc_typename; /* inquiry data */ 63 64 int (*sc_dump)(struct ld_softc *, void *, daddr_t, int); 65 int (*sc_ioctl)(struct ld_softc *, u_long, void *, int32_t, bool); 66 int (*sc_start)(struct ld_softc *, struct buf *); 67 int (*sc_discard)(struct ld_softc *, struct buf *); 68 }; 69 70 /* sc_flags */ 71 #define LDF_ENABLED 0x001 /* device enabled */ 72 #define LDF_UNUSED0 0x020 /* was LDF_DRAIN */ 73 #define LDF_NO_RND 0x040 /* do not attach rnd source */ 74 #define LDF_MPSAFE 0x080 /* backend is MPSAFE */ 75 #define LDF_SUSPEND 0x100 /* disk is suspended until resume */ 76 77 int ldadjqparam(struct ld_softc *, int); 78 void ldattach(struct ld_softc *, const char *); 79 int ldbegindetach(struct ld_softc *, int); 80 void ldenddetach(struct ld_softc *); 81 void lddone(struct ld_softc *, struct buf *); 82 void lddiscardend(struct ld_softc *, struct buf *); 83 84 #endif /* !_DEV_LDVAR_H_ */ 85