| 1 | /* $NetBSD: ldvar.h,v 1.28 2016/09/16 15:20:50 jdolecek 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_maxxfer; /* max xfer size in bytes */ |
| 59 | int sc_maxqueuecnt; /* maximum h/w queue depth */ |
| 60 | |
| 61 | int (*sc_dump)(struct ld_softc *, void *, int, int); |
| 62 | int (*sc_flush)(struct ld_softc *, int); |
| 63 | int (*sc_start)(struct ld_softc *, struct buf *); |
| 64 | int (*sc_discard)(struct ld_softc *, off_t, off_t); |
| 65 | }; |
| 66 | |
| 67 | /* sc_flags */ |
| 68 | #define LDF_ENABLED 0x001 /* device enabled */ |
| 69 | #define LDF_DRAIN 0x020 /* maxqueuecnt has changed; drain */ |
| 70 | |
| 71 | /* sc_flush() flags */ |
| 72 | #define LDFL_POLL 0x001 /* poll for completion */ |
| 73 | |
| 74 | int ldadjqparam(struct ld_softc *, int); |
| 75 | void ldattach(struct ld_softc *, const char *); |
| 76 | int ldbegindetach(struct ld_softc *, int); |
| 77 | void ldenddetach(struct ld_softc *); |
| 78 | void lddone(struct ld_softc *, struct buf *); |
| 79 | |
| 80 | #endif /* !_DEV_LDVAR_H_ */ |
| 81 | |