1 /* $NetBSD: ld_cac.c,v 1.5 2002/01/25 16:10:36 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 1.5 2002/01/25 16:10:36 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/endian.h> 54 #include <sys/dkio.h> 55 #include <sys/disk.h> 56 #if NRND > 0 57 #include <sys/rnd.h> 58 #endif 59 60 #include <machine/bus.h> 61 62 #include <dev/ldvar.h> 63 64 #include <dev/ic/cacreg.h> 65 #include <dev/ic/cacvar.h> 66 67 struct ld_cac_softc { 68 struct ld_softc sc_ld; 69 int sc_hwunit; 70 struct timeval sc_serrtm; 71 int sc_serrcnt; 72 }; 73 74 void ld_cac_attach(struct device *, struct device *, void *); 75 void ld_cac_done(struct device *, void *, int); 76 int ld_cac_dump(struct ld_softc *, void *, int, int); 77 int ld_cac_match(struct device *, struct cfdata *, void *); 78 int ld_cac_start(struct ld_softc *, struct buf *); 79 80 static const struct timeval ld_cac_serrintvl = { 60, 0 }; 81 82 struct cfattach ld_cac_ca = { 83 sizeof(struct ld_cac_softc), ld_cac_match, ld_cac_attach 84 }; 85 86 int 87 ld_cac_match(struct device *parent, struct cfdata *match, void *aux) 88 { 89 90 return (1); 91 } 92 93 void 94 ld_cac_attach(struct device *parent, struct device *self, void *aux) 95 { 96 struct cac_drive_info dinfo; 97 struct cac_attach_args *caca; 98 struct ld_softc *ld; 99 struct ld_cac_softc *sc; 100 struct cac_softc *cac; 101 const char *type; 102 103 sc = (struct ld_cac_softc *)self; 104 ld = &sc->sc_ld; 105 caca = (struct cac_attach_args *)aux; 106 sc->sc_hwunit = caca->caca_unit; 107 cac = (struct cac_softc *)parent; 108 109 if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo), 110 sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) { 111 printf("%s: CMD_GET_LOG_DRV_INFO failed\n", self->dv_xname); 112 return; 113 } 114 115 ld->sc_secsize = CAC_GET2(dinfo.secsize); 116 ld->sc_maxxfer = CAC_MAX_XFER; 117 ld->sc_maxqueuecnt = CAC_MAX_CCBS / cac->sc_nunits; /* XXX */ 118 ld->sc_secperunit = CAC_GET2(dinfo.ncylinders) * 119 CAC_GET1(dinfo.nheads) * CAC_GET1(dinfo.nsectors); 120 ld->sc_start = ld_cac_start; 121 ld->sc_dump = ld_cac_dump; 122 123 switch (CAC_GET1(dinfo.mirror)) { 124 case 0: 125 type = "standalone disk or RAID0"; 126 break; 127 case 1: 128 type = "RAID4"; 129 break; 130 case 2: 131 type = "RAID1"; 132 break; 133 case 3: 134 type = "RAID5"; 135 break; 136 default: 137 type = "unknown type of"; 138 break; 139 } 140 141 printf(": %s array\n", type); 142 143 /* XXX We should verify this... */ 144 ld->sc_flags = LDF_ENABLED; 145 ldattach(ld); 146 } 147 148 int 149 ld_cac_start(struct ld_softc *ld, struct buf *bp) 150 { 151 int flags, cmd; 152 struct cac_softc *cac; 153 struct ld_cac_softc *sc; 154 struct cac_context cc; 155 156 sc = (struct ld_cac_softc *)ld; 157 cac = (struct cac_softc *)ld->sc_dv.dv_parent; 158 159 cc.cc_handler = ld_cac_done; 160 cc.cc_context = bp; 161 cc.cc_dv = &ld->sc_dv; 162 163 if ((bp->b_flags & B_READ) == 0) { 164 cmd = CAC_CMD_WRITE; 165 flags = CAC_CCB_DATA_OUT; 166 } else { 167 cmd = CAC_CMD_READ; 168 flags = CAC_CCB_DATA_IN; 169 } 170 171 return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit, 172 bp->b_rawblkno, flags, &cc)); 173 } 174 175 int 176 ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 177 { 178 struct ld_cac_softc *sc; 179 180 sc = (struct ld_cac_softc *)ld; 181 182 return (cac_cmd((struct cac_softc *)ld->sc_dv.dv_parent, 183 CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize, 184 sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL)); 185 } 186 187 void 188 ld_cac_done(struct device *dv, void *context, int error) 189 { 190 struct buf *bp; 191 struct ld_cac_softc *sc; 192 193 bp = context; 194 195 if ((error & CAC_RET_HARD_ERROR) != 0) { 196 printf("%s: hard error\n", dv->dv_xname); 197 error = EIO; 198 } 199 if ((error & CAC_RET_CMD_REJECTED) != 0) { 200 printf("%s: invalid request\n", dv->dv_xname); 201 error = EIO; 202 } 203 if ((error & CAC_RET_SOFT_ERROR) != 0) { 204 sc = (struct ld_cac_softc *)dv; 205 sc->sc_serrcnt++; 206 if (ratecheck(&sc->sc_serrtm, &ld_cac_serrintvl)) { 207 printf("%s: %d soft errors; array may be degraded\n", 208 dv->dv_xname, sc->sc_serrcnt); 209 sc->sc_serrcnt = 0; 210 } 211 error = 0; 212 } 213 214 if (error) { 215 bp->b_flags |= B_ERROR; 216 bp->b_error = error; 217 bp->b_resid = bp->b_bcount; 218 } else 219 bp->b_resid = 0; 220 221 lddone((struct ld_softc *)dv, bp); 222 } 223