ld_cac.c revision 1.16
1 /* $NetBSD: ld_cac.c,v 1.16 2006/11/28 20:29:14 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 <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: ld_cac.c,v 1.16 2006/11/28 20:29:14 ad Exp $"); 45 46 #include "rnd.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/device.h> 52 #include <sys/buf.h> 53 #include <sys/bufq.h> 54 #include <sys/endian.h> 55 #include <sys/dkio.h> 56 #include <sys/disk.h> 57 #if NRND > 0 58 #include <sys/rnd.h> 59 #endif 60 61 #include <machine/bus.h> 62 63 #include <dev/ldvar.h> 64 65 #include <dev/ic/cacreg.h> 66 #include <dev/ic/cacvar.h> 67 68 struct ld_cac_softc { 69 struct ld_softc sc_ld; 70 int sc_hwunit; 71 struct timeval sc_serrtm; 72 int sc_serrcnt; 73 }; 74 75 void ld_cac_attach(struct device *, struct device *, void *); 76 void ld_cac_done(struct device *, void *, int); 77 int ld_cac_dump(struct ld_softc *, void *, int, int); 78 int ld_cac_match(struct device *, struct cfdata *, void *); 79 int ld_cac_start(struct ld_softc *, struct buf *); 80 81 static const struct timeval ld_cac_serrintvl = { 60, 0 }; 82 83 CFATTACH_DECL(ld_cac, sizeof(struct ld_cac_softc), 84 ld_cac_match, ld_cac_attach, NULL, NULL); 85 86 int 87 ld_cac_match(struct device *parent, struct cfdata *match, 88 void *aux) 89 { 90 91 return (1); 92 } 93 94 void 95 ld_cac_attach(struct device *parent, struct device *self, void *aux) 96 { 97 struct cac_drive_info dinfo; 98 struct cac_attach_args *caca; 99 struct ld_softc *ld; 100 struct ld_cac_softc *sc; 101 struct cac_softc *cac; 102 const char *type; 103 104 sc = (struct ld_cac_softc *)self; 105 ld = &sc->sc_ld; 106 caca = (struct cac_attach_args *)aux; 107 sc->sc_hwunit = caca->caca_unit; 108 cac = (struct cac_softc *)parent; 109 110 if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo), 111 sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) { 112 aprint_error(": CMD_GET_LOG_DRV_INFO failed\n"); 113 return; 114 } 115 116 ld->sc_secsize = CAC_GET2(dinfo.secsize); 117 ld->sc_maxxfer = CAC_MAX_XFER; 118 ld->sc_maxqueuecnt = CAC_MAX_CCBS / cac->sc_nunits; /* XXX */ 119 ld->sc_secperunit = CAC_GET2(dinfo.ncylinders) * 120 CAC_GET1(dinfo.nheads) * CAC_GET1(dinfo.nsectors); 121 ld->sc_start = ld_cac_start; 122 ld->sc_dump = ld_cac_dump; 123 124 switch (CAC_GET1(dinfo.mirror)) { 125 case 0: 126 type = "standalone disk or RAID0"; 127 break; 128 case 1: 129 type = "RAID4"; 130 break; 131 case 2: 132 type = "RAID1"; 133 break; 134 case 3: 135 type = "RAID5"; 136 break; 137 default: 138 type = "unknown type of"; 139 break; 140 } 141 142 aprint_normal(": %s array\n", type); 143 144 /* XXX We should verify this... */ 145 ld->sc_flags = LDF_ENABLED; 146 ldattach(ld); 147 } 148 149 int 150 ld_cac_start(struct ld_softc *ld, struct buf *bp) 151 { 152 int flags, cmd; 153 struct cac_softc *cac; 154 struct ld_cac_softc *sc; 155 struct cac_context cc; 156 157 sc = (struct ld_cac_softc *)ld; 158 cac = (struct cac_softc *)device_parent(&ld->sc_dv); 159 160 cc.cc_handler = ld_cac_done; 161 cc.cc_context = bp; 162 cc.cc_dv = &ld->sc_dv; 163 164 if ((bp->b_flags & B_READ) == 0) { 165 cmd = CAC_CMD_WRITE; 166 flags = CAC_CCB_DATA_OUT; 167 } else { 168 cmd = CAC_CMD_READ; 169 flags = CAC_CCB_DATA_IN; 170 } 171 172 return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit, 173 bp->b_rawblkno, flags, &cc)); 174 } 175 176 int 177 ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 178 { 179 struct ld_cac_softc *sc; 180 181 sc = (struct ld_cac_softc *)ld; 182 183 return (cac_cmd((struct cac_softc *)device_parent(&ld->sc_dv), 184 CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize, 185 sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL)); 186 } 187 188 void 189 ld_cac_done(struct device *dv, void *context, int error) 190 { 191 struct buf *bp; 192 struct ld_cac_softc *sc; 193 int rv; 194 195 bp = context; 196 rv = 0; 197 198 if ((error & CAC_RET_CMD_REJECTED) == CAC_RET_CMD_REJECTED) { 199 printf("%s: command rejected\n", dv->dv_xname); 200 rv = EIO; 201 } 202 if (rv == 0 && (error & CAC_RET_INVAL_BLOCK) != 0) { 203 printf("%s: invalid request block\n", dv->dv_xname); 204 rv = EIO; 205 } 206 if (rv == 0 && (error & CAC_RET_HARD_ERROR) != 0) { 207 printf("%s: hard error\n", dv->dv_xname); 208 rv = EIO; 209 } 210 if (rv == 0 && (error & CAC_RET_SOFT_ERROR) != 0) { 211 sc = (struct ld_cac_softc *)dv; 212 sc->sc_serrcnt++; 213 if (ratecheck(&sc->sc_serrtm, &ld_cac_serrintvl)) { 214 printf("%s: %d soft errors; array may be degraded\n", 215 dv->dv_xname, sc->sc_serrcnt); 216 sc->sc_serrcnt = 0; 217 } 218 } 219 220 if (rv) { 221 bp->b_flags |= B_ERROR; 222 bp->b_error = rv; 223 bp->b_resid = bp->b_bcount; 224 } else 225 bp->b_resid = 0; 226 227 lddone((struct ld_softc *)dv, bp); 228 } 229
Indexes created Wed Sep 24 15:09:51 GMT 2025