1 /* $NetBSD: ld_twe.c,v 1.18 2003/09/26 03:11:41 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2001, 2002, 2003 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; and by Jason R. Thorpe of Wasabi Systems, Inc. 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 * 3ware "Escalade" RAID controller front-end for ld(4) driver. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: ld_twe.c,v 1.18 2003/09/26 03:11:41 thorpej 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 <uvm/uvm_extern.h> 63 64 #include <dev/ldvar.h> 65 66 #include <dev/pci/twereg.h> 67 #include <dev/pci/twevar.h> 68 69 struct ld_twe_softc { 70 struct ld_softc sc_ld; 71 int sc_hwunit; 72 }; 73 74 static void ld_twe_attach(struct device *, struct device *, void *); 75 static int ld_twe_detach(struct device *, int); 76 static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, 77 struct buf *); 78 static int ld_twe_dump(struct ld_softc *, void *, int, int); 79 static void ld_twe_handler(struct twe_ccb *, int); 80 static int ld_twe_match(struct device *, struct cfdata *, void *); 81 static int ld_twe_start(struct ld_softc *, struct buf *); 82 83 static void ld_twe_adjqparam(struct device *, int); 84 85 CFATTACH_DECL(ld_twe, sizeof(struct ld_twe_softc), 86 ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); 87 88 static const struct twe_callbacks ld_twe_callbacks = { 89 ld_twe_adjqparam, 90 }; 91 92 static int 93 ld_twe_match(struct device *parent, struct cfdata *match, void *aux) 94 { 95 96 return (1); 97 } 98 99 static void 100 ld_twe_attach(struct device *parent, struct device *self, void *aux) 101 { 102 struct twe_attach_args *twea; 103 struct ld_twe_softc *sc; 104 struct ld_softc *ld; 105 struct twe_softc *twe; 106 struct twe_drive *td; 107 const char *typestr, *stripestr, *statstr; 108 char unktype[16], stripebuf[32], unkstat[32]; 109 int error; 110 uint8_t status; 111 112 sc = (struct ld_twe_softc *)self; 113 ld = &sc->sc_ld; 114 twe = (struct twe_softc *)parent; 115 twea = aux; 116 td = &twe->sc_units[twea->twea_unit]; 117 118 twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); 119 120 sc->sc_hwunit = twea->twea_unit; 121 ld->sc_flags = LDF_ENABLED; 122 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 123 ld->sc_secperunit = td->td_size; 124 ld->sc_secsize = TWE_SECTOR_SIZE; 125 ld->sc_maxqueuecnt = twe->sc_openings; 126 ld->sc_start = ld_twe_start; 127 ld->sc_dump = ld_twe_dump; 128 129 typestr = twe_describe_code(twe_table_unittype, td->td_type); 130 if (typestr == NULL) { 131 sprintf(unktype, "<0x%02x>", td->td_type); 132 typestr = unktype; 133 } 134 switch (td->td_type) { 135 case TWE_AD_CONFIG_RAID0: 136 case TWE_AD_CONFIG_RAID5: 137 case TWE_AD_CONFIG_RAID10: 138 stripestr = twe_describe_code(twe_table_stripedepth, 139 td->td_stripe); 140 if (stripestr == NULL) 141 sprintf(stripebuf, "<stripe code 0x%02x> ", 142 td->td_stripe); 143 else 144 sprintf(stripebuf, "%s stripe ", stripestr); 145 break; 146 default: 147 stripebuf[0] = '\0'; 148 } 149 150 error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, 151 TWE_PARAM_UNITINFO_Status, &status); 152 status &= TWE_PARAM_UNITSTATUS_MASK; 153 if (error) { 154 sprintf(unkstat, "<unknown>"); 155 statstr = unkstat; 156 } else if ((statstr = 157 twe_describe_code(twe_table_unitstate, status)) == NULL) { 158 sprintf(unkstat, "<status code 0x%02x>", status); 159 statstr = unkstat; 160 } 161 162 printf(": %s%s, status: %s\n", stripebuf, typestr, statstr); 163 ldattach(ld); 164 } 165 166 static int 167 ld_twe_detach(struct device *self, int flags) 168 { 169 int rv; 170 171 if ((rv = ldbegindetach((struct ld_softc *)self, flags)) != 0) 172 return (rv); 173 ldenddetach((struct ld_softc *)self); 174 175 return (0); 176 } 177 178 static int 179 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 180 int dowrite, struct buf *bp) 181 { 182 struct twe_ccb *ccb; 183 struct twe_cmd *tc; 184 struct twe_softc *twe; 185 int s, rv, flags; 186 187 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 188 189 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 190 if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) 191 return (EAGAIN); 192 193 ccb->ccb_data = data; 194 ccb->ccb_datasize = datasize; 195 tc = ccb->ccb_cmd; 196 197 /* Build the command. */ 198 tc->tc_size = 3; 199 tc->tc_unit = sc->sc_hwunit; 200 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 201 tc->tc_args.io.lba = htole32(blkno); 202 203 if (dowrite) 204 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 205 else 206 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 207 208 /* Map the data transfer. */ 209 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 210 twe_ccb_free(twe, ccb); 211 return (rv); 212 } 213 214 if (bp == NULL) { 215 /* 216 * Polled commands must not sit on the software queue. Wait 217 * up to 2 seconds for the command to complete. 218 */ 219 s = splbio(); 220 rv = twe_ccb_poll(twe, ccb, 2000); 221 twe_ccb_unmap(twe, ccb); 222 twe_ccb_free(twe, ccb); 223 splx(s); 224 } else { 225 ccb->ccb_tx.tx_handler = ld_twe_handler; 226 ccb->ccb_tx.tx_context = bp; 227 ccb->ccb_tx.tx_dv = (struct device *)sc; 228 twe_ccb_enqueue(twe, ccb); 229 rv = 0; 230 } 231 232 return (rv); 233 } 234 235 static int 236 ld_twe_start(struct ld_softc *ld, struct buf *bp) 237 { 238 239 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 240 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 241 } 242 243 static void 244 ld_twe_handler(struct twe_ccb *ccb, int error) 245 { 246 struct buf *bp; 247 struct twe_context *tx; 248 struct ld_twe_softc *sc; 249 struct twe_softc *twe; 250 251 tx = &ccb->ccb_tx; 252 bp = tx->tx_context; 253 sc = (struct ld_twe_softc *)tx->tx_dv; 254 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 255 256 twe_ccb_unmap(twe, ccb); 257 twe_ccb_free(twe, ccb); 258 259 if (error) { 260 bp->b_flags |= B_ERROR; 261 bp->b_error = error; 262 bp->b_resid = bp->b_bcount; 263 } else 264 bp->b_resid = 0; 265 266 lddone(&sc->sc_ld, bp); 267 } 268 269 static int 270 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 271 { 272 273 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 274 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 275 } 276 277 static void 278 ld_twe_adjqparam(struct device *self, int openings) 279 { 280 281 ldadjqparam((struct ld_softc *)self, openings); 282 } 283