ld_cac.c revision 1.20
1 /* $NetBSD: ld_cac.c,v 1.20 2008/04/08 12:07:26 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2006 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 1.20 2008/04/08 12:07:26 cegger 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 <sys/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 kmutex_t *sc_mutex; 71 int sc_hwunit; 72 int sc_serrcnt; 73 struct timeval sc_serrtm; 74 }; 75 76 void ld_cac_attach(struct device *, struct device *, void *); 77 void ld_cac_done(struct device *, void *, int); 78 int ld_cac_dump(struct ld_softc *, void *, int, int); 79 int ld_cac_match(struct device *, struct cfdata *, void *); 80 int ld_cac_start(struct ld_softc *, struct buf *); 81 82 static const struct timeval ld_cac_serrintvl = { 60, 0 }; 83 84 CFATTACH_DECL(ld_cac, sizeof(struct ld_cac_softc), 85 ld_cac_match, ld_cac_attach, NULL, NULL); 86 87 int 88 ld_cac_match(struct device *parent, struct cfdata *match, 89 void *aux) 90 { 91 92 return (1); 93 } 94 95 void 96 ld_cac_attach(struct device *parent, struct device *self, void *aux) 97 { 98 struct cac_drive_info dinfo; 99 struct cac_attach_args *caca; 100 struct ld_softc *ld; 101 struct ld_cac_softc *sc; 102 struct cac_softc *cac; 103 const char *type; 104 105 sc = (struct ld_cac_softc *)self; 106 ld = &sc->sc_ld; 107 caca = (struct cac_attach_args *)aux; 108 sc->sc_hwunit = caca->caca_unit; 109 cac = (struct cac_softc *)parent; 110 sc->sc_mutex = &cac->sc_mutex; 111 112 if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo), 113 sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) { 114 aprint_error(": CMD_GET_LOG_DRV_INFO failed\n"); 115 return; 116 } 117 118 ld->sc_secsize = CAC_GET2(dinfo.secsize); 119 ld->sc_maxxfer = CAC_MAX_XFER; 120 ld->sc_maxqueuecnt = CAC_MAX_CCBS / cac->sc_nunits; /* XXX */ 121 ld->sc_secperunit = CAC_GET2(dinfo.ncylinders) * 122 CAC_GET1(dinfo.nheads) * CAC_GET1(dinfo.nsectors); 123 ld->sc_start = ld_cac_start; 124 ld->sc_dump = ld_cac_dump; 125 126 switch (CAC_GET1(dinfo.mirror)) { 127 case 0: 128 type = "standalone disk or RAID0"; 129 break; 130 case 1: 131 type = "RAID4"; 132 break; 133 case 2: 134 type = "RAID1"; 135 break; 136 case 3: 137 type = "RAID5"; 138 break; 139 default: 140 type = "unknown type of"; 141 break; 142 } 143 144 aprint_normal(": %s array\n", type); 145 146 /* XXX We should verify this... */ 147 ld->sc_flags = LDF_ENABLED; 148 ldattach(ld); 149 } 150 151 int 152 ld_cac_start(struct ld_softc *ld, struct buf *bp) 153 { 154 int flags, cmd; 155 struct cac_softc *cac; 156 struct ld_cac_softc *sc; 157 struct cac_context cc; 158 159 sc = (struct ld_cac_softc *)ld; 160 cac = (struct cac_softc *)device_parent(&ld->sc_dv); 161 162 cc.cc_handler = ld_cac_done; 163 cc.cc_context = bp; 164 cc.cc_dv = &ld->sc_dv; 165 166 if ((bp->b_flags & B_READ) == 0) { 167 cmd = CAC_CMD_WRITE; 168 flags = CAC_CCB_DATA_OUT; 169 } else { 170 cmd = CAC_CMD_READ; 171 flags = CAC_CCB_DATA_IN; 172 } 173 174 return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit, 175 bp->b_rawblkno, flags, &cc)); 176 } 177 178 int 179 ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 180 { 181 struct ld_cac_softc *sc; 182 183 sc = (struct ld_cac_softc *)ld; 184 185 return (cac_cmd((struct cac_softc *)device_parent(&ld->sc_dv), 186 CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize, 187 sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL)); 188 } 189 190 void 191 ld_cac_done(struct device *dv, void *context, int error) 192 { 193 struct buf *bp; 194 struct ld_cac_softc *sc; 195 int rv; 196 197 bp = context; 198 rv = 0; 199 sc = device_private(dv); 200 201 if ((error & CAC_RET_CMD_REJECTED) == CAC_RET_CMD_REJECTED) { 202 aprint_error_dev(dv, "command rejected\n"); 203 rv = EIO; 204 } 205 if (rv == 0 && (error & CAC_RET_INVAL_BLOCK) != 0) { 206 aprint_error_dev(dv, "invalid request block\n"); 207 rv = EIO; 208 } 209 if (rv == 0 && (error & CAC_RET_HARD_ERROR) != 0) { 210 aprint_error_dev(dv, "hard error\n"); 211 rv = EIO; 212 } 213 if (rv == 0 && (error & CAC_RET_SOFT_ERROR) != 0) { 214 sc->sc_serrcnt++; 215 if (ratecheck(&sc->sc_serrtm, &ld_cac_serrintvl)) { 216 sc->sc_serrcnt = 0; 217 aprint_error_dev(dv, "%d soft errors; array may be degraded\n", 218 sc->sc_serrcnt); 219 } 220 } 221 222 if (rv) { 223 bp->b_error = rv; 224 bp->b_resid = bp->b_bcount; 225 } else 226 bp->b_resid = 0; 227 228 mutex_exit(sc->sc_mutex); 229 lddone((struct ld_softc *)dv, bp); 230 mutex_enter(sc->sc_mutex); 231 } 232
Indexes created Fri Sep 26 08:10:20 GMT 2025