ld_cac.c revision 1.1
1 /* $NetBSD: ld_cac.c,v 1.1 2000/11/26 17:44:05 ad 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Compaq array controller front-end for ld(4) driver. 41 */ 42 43 #include "rnd.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/device.h> 49 #include <sys/buf.h> 50 #include <sys/endian.h> 51 #include <sys/dkio.h> 52 #include <sys/disk.h> 53 #if NRND > 0 54 #include <sys/rnd.h> 55 #endif 56 57 #include <machine/bus.h> 58 59 #include <dev/ldvar.h> 60 61 #include <dev/ic/cacreg.h> 62 #include <dev/ic/cacvar.h> 63 64 struct ld_cac_softc { 65 struct ld_softc sc_ld; 66 int sc_hwunit; 67 }; 68 69 static void ld_cac_attach(struct device *, struct device *, void *); 70 static void ld_cac_done(struct device *, void *, int); 71 static int ld_cac_dump(struct ld_softc *, void *, int, int); 72 static int ld_cac_match(struct device *, struct cfdata *, void *); 73 static int ld_cac_start(struct ld_softc *, struct buf *); 74 75 struct cfattach ld_cac_ca = { 76 sizeof(struct ld_cac_softc), ld_cac_match, ld_cac_attach 77 }; 78 79 static int 80 ld_cac_match(struct device *parent, struct cfdata *match, void *aux) 81 { 82 83 return (1); 84 } 85 86 static void 87 ld_cac_attach(struct device *parent, struct device *self, void *aux) 88 { 89 struct cac_drive_info dinfo; 90 struct cac_attach_args *caca; 91 struct ld_softc *ld; 92 struct ld_cac_softc *sc; 93 struct cac_softc *cac; 94 const char *type; 95 96 sc = (struct ld_cac_softc *)self; 97 ld = &sc->sc_ld; 98 caca = (struct cac_attach_args *)aux; 99 sc->sc_hwunit = caca->caca_unit; 100 cac = (struct cac_softc *)parent; 101 102 if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo), 103 sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) { 104 printf("%s: CMD_GET_LOG_DRV_INFO failed\n", self->dv_xname); 105 return; 106 } 107 108 ld->sc_ncylinders = CAC_GET2(dinfo.ncylinders); 109 ld->sc_nheads = CAC_GET1(dinfo.nheads); 110 ld->sc_nsectors = CAC_GET1(dinfo.nsectors); 111 ld->sc_secsize = CAC_GET2(dinfo.secsize); 112 ld->sc_maxxfer = CAC_MAX_XFER; 113 ld->sc_maxqueuecnt = CAC_MAX_CCBS / cac->sc_nunits; /* XXX */ 114 ld->sc_secperunit = ld->sc_ncylinders * ld->sc_nheads * 115 ld->sc_nsectors; 116 ld->sc_start = ld_cac_start; 117 ld->sc_dump = ld_cac_dump; 118 119 switch (CAC_GET1(dinfo.mirror)) { 120 case 0: 121 type = "standalone disk or RAID0"; 122 break; 123 case 1: 124 type = "RAID4"; 125 break; 126 case 2: 127 type = "RAID1"; 128 break; 129 case 3: 130 type = "RAID5"; 131 break; 132 default: 133 type = "unknown type of"; 134 break; 135 } 136 137 printf(": %s array\n", type); 138 139 /* XXX We should verify this... */ 140 ld->sc_flags = LDF_ENABLED; 141 ldattach(ld); 142 } 143 144 static int 145 ld_cac_start(struct ld_softc *ld, struct buf *bp) 146 { 147 int flags, cmd; 148 struct cac_softc *cac; 149 struct ld_cac_softc *sc; 150 struct cac_context cc; 151 152 sc = (struct ld_cac_softc *)ld; 153 cac = (struct cac_softc *)ld->sc_dv.dv_parent; 154 155 cc.cc_handler = ld_cac_done; 156 cc.cc_context = bp; 157 cc.cc_dv = &ld->sc_dv; 158 159 if ((bp->b_flags & B_READ) == 0) { 160 cmd = CAC_CMD_WRITE; 161 flags = CAC_CCB_DATA_OUT; 162 } else { 163 cmd = CAC_CMD_READ; 164 flags = CAC_CCB_DATA_IN; 165 } 166 167 return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit, 168 bp->b_rawblkno, flags, &cc)); 169 } 170 171 static int 172 ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 173 { 174 struct ld_cac_softc *sc; 175 176 sc = (struct ld_cac_softc *)ld; 177 178 return (cac_cmd((struct cac_softc *)ld->sc_dv.dv_parent, 179 CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize, 180 sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL)); 181 } 182 183 static void 184 ld_cac_done(struct device *dv, void *context, int error) 185 { 186 struct buf *bp; 187 188 bp = context; 189 190 if (error) { 191 bp->b_flags |= B_ERROR; 192 bp->b_error = error; 193 bp->b_resid = bp->b_bcount; 194 } else 195 bp->b_resid = 0; 196 197 lddone((struct ld_softc *)dv, bp); 198 } 199
Indexes created Mon Sep 22 21:09:42 GMT 2025