ld_twe.c revision 1.31
1 /* $NetBSD: ld_twe.c,v 1.31 2008/08/11 06:46:10 simonb 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * 3ware "Escalade" RAID controller front-end for ld(4) driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ld_twe.c,v 1.31 2008/08/11 06:46:10 simonb Exp $"); 38 39 #include "rnd.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/buf.h> 46 #include <sys/bufq.h> 47 #include <sys/endian.h> 48 #include <sys/dkio.h> 49 #include <sys/disk.h> 50 #include <sys/proc.h> 51 #if NRND > 0 52 #include <sys/rnd.h> 53 #endif 54 55 #include <sys/bus.h> 56 57 #include <uvm/uvm_extern.h> 58 59 #include <dev/ldvar.h> 60 61 #include <dev/pci/twereg.h> 62 #include <dev/pci/twevar.h> 63 64 struct ld_twe_softc { 65 struct ld_softc sc_ld; 66 int sc_hwunit; 67 }; 68 69 static void ld_twe_attach(struct device *, struct device *, void *); 70 static int ld_twe_detach(struct device *, int); 71 static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, 72 struct buf *); 73 static int ld_twe_dump(struct ld_softc *, void *, int, int); 74 static int ld_twe_flush(struct ld_softc *, int); 75 static void ld_twe_handler(struct twe_ccb *, int); 76 static int ld_twe_match(struct device *, struct cfdata *, void *); 77 static int ld_twe_start(struct ld_softc *, struct buf *); 78 79 static void ld_twe_adjqparam(struct device *, int); 80 81 CFATTACH_DECL(ld_twe, sizeof(struct ld_twe_softc), 82 ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); 83 84 static const struct twe_callbacks ld_twe_callbacks = { 85 ld_twe_adjqparam, 86 }; 87 88 static int 89 ld_twe_match(struct device *parent, struct cfdata *match, 90 void *aux) 91 { 92 93 return (1); 94 } 95 96 static void 97 ld_twe_attach(struct device *parent, struct device *self, void *aux) 98 { 99 struct twe_attach_args *twea; 100 struct ld_twe_softc *sc; 101 struct ld_softc *ld; 102 struct twe_softc *twe; 103 struct twe_drive *td; 104 const char *typestr, *stripestr, *statstr; 105 char unktype[16], stripebuf[32], unkstat[32]; 106 int error; 107 uint8_t status; 108 109 sc = (struct ld_twe_softc *)self; 110 ld = &sc->sc_ld; 111 twe = (struct twe_softc *)parent; 112 twea = aux; 113 td = &twe->sc_units[twea->twea_unit]; 114 115 twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); 116 117 sc->sc_hwunit = twea->twea_unit; 118 ld->sc_flags = LDF_ENABLED; 119 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 120 ld->sc_secperunit = td->td_size; 121 ld->sc_secsize = TWE_SECTOR_SIZE; 122 ld->sc_maxqueuecnt = twe->sc_openings; 123 ld->sc_start = ld_twe_start; 124 ld->sc_dump = ld_twe_dump; 125 ld->sc_flush = ld_twe_flush; 126 127 typestr = twe_describe_code(twe_table_unittype, td->td_type); 128 if (typestr == NULL) { 129 snprintf(unktype, sizeof(unktype), "<0x%02x>", td->td_type); 130 typestr = unktype; 131 } 132 switch (td->td_type) { 133 case TWE_AD_CONFIG_RAID0: 134 case TWE_AD_CONFIG_RAID5: 135 case TWE_AD_CONFIG_RAID10: 136 stripestr = twe_describe_code(twe_table_stripedepth, 137 td->td_stripe); 138 if (stripestr == NULL) 139 snprintf(stripebuf, sizeof(stripebuf), 140 "<stripe code 0x%02x> ", td->td_stripe); 141 else 142 snprintf(stripebuf, sizeof(stripebuf), "%s stripe ", 143 stripestr); 144 break; 145 default: 146 stripebuf[0] = '\0'; 147 } 148 149 error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, 150 TWE_PARAM_UNITINFO_Status, &status); 151 status &= TWE_PARAM_UNITSTATUS_MASK; 152 if (error) { 153 snprintf(unkstat, sizeof(unkstat), "<unknown>"); 154 statstr = unkstat; 155 } else if ((statstr = 156 twe_describe_code(twe_table_unitstate, status)) == NULL) { 157 snprintf(unkstat, sizeof(unkstat), "<status code 0x%02x>", 158 status); 159 statstr = unkstat; 160 } 161 162 aprint_normal(": %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 *)device_parent(&sc->sc_ld.sc_dv); 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 *)device_parent(&sc->sc_ld.sc_dv); 255 256 twe_ccb_unmap(twe, ccb); 257 twe_ccb_free(twe, ccb); 258 259 if (error) { 260 bp->b_error = error; 261 bp->b_resid = bp->b_bcount; 262 } else 263 bp->b_resid = 0; 264 265 lddone(&sc->sc_ld, bp); 266 } 267 268 static int 269 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 270 { 271 272 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 273 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 274 } 275 276 static int 277 ld_twe_flush(struct ld_softc *ld, int flags) 278 { 279 struct ld_twe_softc *sc = (void *) ld; 280 struct twe_softc *twe = (void *) device_parent(&ld->sc_dv); 281 struct twe_ccb *ccb; 282 struct twe_cmd *tc; 283 int s, rv; 284 285 ccb = twe_ccb_alloc_wait(twe, 0); 286 KASSERT(ccb != NULL); 287 288 ccb->ccb_data = NULL; 289 ccb->ccb_datasize = 0; 290 291 tc = ccb->ccb_cmd; 292 tc->tc_size = 2; 293 tc->tc_opcode = TWE_OP_FLUSH; 294 tc->tc_unit = sc->sc_hwunit; 295 tc->tc_count = 0; 296 297 if (flags & LDFL_POLL) { 298 /* 299 * Polled commands must not sit on the software queue. Wait 300 * up to 2 seconds for the command to complete. 301 */ 302 s = splbio(); 303 rv = twe_ccb_poll(twe, ccb, 2000); 304 twe_ccb_unmap(twe, ccb); 305 twe_ccb_free(twe, ccb); 306 splx(s); 307 } else { 308 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 309 ccb->ccb_tx.tx_context = NULL; 310 ccb->ccb_tx.tx_dv = &ld->sc_dv; 311 twe_ccb_enqueue(twe, ccb); 312 313 rv = 0; 314 s = splbio(); 315 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 316 if ((rv = tsleep(ccb, PRIBIO, "tweflush", 317 60 * hz)) != 0) 318 break; 319 twe_ccb_free(twe, ccb); 320 splx(s); 321 } 322 323 return (rv); 324 } 325 326 static void 327 ld_twe_adjqparam(struct device *self, int openings) 328 { 329 330 ldadjqparam((struct ld_softc *)self, openings); 331 } 332
Indexes created Wed Sep 24 02:09:48 GMT 2025