ld_twe.c revision 1.39
1 /* $NetBSD: ld_twe.c,v 1.39 2016/09/27 03:33:32 pgoyette 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 1.39 2016/09/27 03:33:32 pgoyette Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/buf.h> 44 #include <sys/bufq.h> 45 #include <sys/endian.h> 46 #include <sys/dkio.h> 47 #include <sys/disk.h> 48 #include <sys/proc.h> 49 #include <sys/module.h> 50 #include <sys/bus.h> 51 52 #include <dev/ldvar.h> 53 54 #include <dev/pci/twereg.h> 55 #include <dev/pci/twevar.h> 56 57 #include "ioconf.h" 58 59 struct ld_twe_softc { 60 struct ld_softc sc_ld; 61 int sc_hwunit; 62 }; 63 64 static void ld_twe_attach(device_t, device_t, void *); 65 static int ld_twe_detach(device_t, int); 66 static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, 67 struct buf *); 68 static int ld_twe_dump(struct ld_softc *, void *, int, int); 69 static int ld_twe_flush(struct ld_softc *, int); 70 static void ld_twe_handler(struct twe_ccb *, int); 71 static int ld_twe_match(device_t, cfdata_t, void *); 72 static int ld_twe_start(struct ld_softc *, struct buf *); 73 74 static void ld_twe_adjqparam(device_t, int); 75 76 CFATTACH_DECL_NEW(ld_twe, sizeof(struct ld_twe_softc), 77 ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); 78 79 static const struct twe_callbacks ld_twe_callbacks = { 80 ld_twe_adjqparam, 81 }; 82 83 static int 84 ld_twe_match(device_t parent, cfdata_t match, void *aux) 85 { 86 87 return (1); 88 } 89 90 static void 91 ld_twe_attach(device_t parent, device_t self, void *aux) 92 { 93 struct twe_attach_args *twea = aux; 94 struct ld_twe_softc *sc = device_private(self); 95 struct ld_softc *ld = &sc->sc_ld; 96 struct twe_softc *twe = device_private(parent); 97 struct twe_drive *td = &twe->sc_units[twea->twea_unit]; 98 const char *typestr, *stripestr, *statstr; 99 char unktype[16], stripebuf[32], unkstat[32]; 100 int error; 101 uint8_t status; 102 103 ld->sc_dv = self; 104 105 twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); 106 107 sc->sc_hwunit = twea->twea_unit; 108 ld->sc_flags = LDF_ENABLED; 109 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 110 ld->sc_secperunit = td->td_size; 111 ld->sc_secsize = TWE_SECTOR_SIZE; 112 ld->sc_maxqueuecnt = twe->sc_openings; 113 ld->sc_start = ld_twe_start; 114 ld->sc_dump = ld_twe_dump; 115 ld->sc_flush = ld_twe_flush; 116 117 typestr = twe_describe_code(twe_table_unittype, td->td_type); 118 if (typestr == NULL) { 119 snprintf(unktype, sizeof(unktype), "<0x%02x>", td->td_type); 120 typestr = unktype; 121 } 122 switch (td->td_type) { 123 case TWE_AD_CONFIG_RAID0: 124 case TWE_AD_CONFIG_RAID5: 125 case TWE_AD_CONFIG_RAID10: 126 stripestr = twe_describe_code(twe_table_stripedepth, 127 td->td_stripe); 128 if (stripestr == NULL) 129 snprintf(stripebuf, sizeof(stripebuf), 130 "<stripe code 0x%02x> ", td->td_stripe); 131 else 132 snprintf(stripebuf, sizeof(stripebuf), "%s stripe ", 133 stripestr); 134 break; 135 default: 136 stripebuf[0] = '\0'; 137 } 138 139 error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, 140 TWE_PARAM_UNITINFO_Status, &status); 141 status &= TWE_PARAM_UNITSTATUS_MASK; 142 if (error) { 143 snprintf(unkstat, sizeof(unkstat), "<unknown>"); 144 statstr = unkstat; 145 } else if ((statstr = 146 twe_describe_code(twe_table_unitstate, status)) == NULL) { 147 snprintf(unkstat, sizeof(unkstat), "<status code 0x%02x>", 148 status); 149 statstr = unkstat; 150 } 151 152 aprint_normal(": %s%s, status: %s\n", stripebuf, typestr, statstr); 153 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); 154 } 155 156 static int 157 ld_twe_detach(device_t self, int flags) 158 { 159 struct ld_twe_softc *sc = device_private(self); 160 struct ld_softc *ld = &sc->sc_ld; 161 int rv; 162 163 if ((rv = ldbegindetach(ld, flags)) != 0) 164 return (rv); 165 ldenddetach(ld); 166 167 return (0); 168 } 169 170 static int 171 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 172 int dowrite, struct buf *bp) 173 { 174 struct twe_ccb *ccb; 175 struct twe_cmd *tc; 176 struct twe_softc *twe; 177 int s, rv, flags; 178 179 twe = device_private(device_parent(sc->sc_ld.sc_dv)); 180 181 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 182 if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) 183 return (EAGAIN); 184 185 ccb->ccb_data = data; 186 ccb->ccb_datasize = datasize; 187 tc = ccb->ccb_cmd; 188 189 /* Build the command. */ 190 tc->tc_size = 3; 191 tc->tc_unit = sc->sc_hwunit; 192 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 193 tc->tc_args.io.lba = htole32(blkno); 194 195 if (dowrite) 196 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 197 else 198 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 199 200 /* Map the data transfer. */ 201 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 202 twe_ccb_free(twe, ccb); 203 return (rv); 204 } 205 206 if (bp == NULL) { 207 /* 208 * Polled commands must not sit on the software queue. Wait 209 * up to 2 seconds for the command to complete. 210 */ 211 s = splbio(); 212 rv = twe_ccb_poll(twe, ccb, 2000); 213 twe_ccb_unmap(twe, ccb); 214 twe_ccb_free(twe, ccb); 215 splx(s); 216 } else { 217 ccb->ccb_tx.tx_handler = ld_twe_handler; 218 ccb->ccb_tx.tx_context = bp; 219 ccb->ccb_tx.tx_dv = sc->sc_ld.sc_dv; 220 twe_ccb_enqueue(twe, ccb); 221 rv = 0; 222 } 223 224 return (rv); 225 } 226 227 static int 228 ld_twe_start(struct ld_softc *ld, struct buf *bp) 229 { 230 231 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 232 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 233 } 234 235 static void 236 ld_twe_handler(struct twe_ccb *ccb, int error) 237 { 238 struct buf *bp; 239 struct twe_context *tx; 240 struct ld_twe_softc *sc; 241 struct twe_softc *twe; 242 243 tx = &ccb->ccb_tx; 244 bp = tx->tx_context; 245 sc = device_private(tx->tx_dv); 246 twe = device_private(device_parent(sc->sc_ld.sc_dv)); 247 248 twe_ccb_unmap(twe, ccb); 249 twe_ccb_free(twe, ccb); 250 251 if (error) { 252 bp->b_error = error; 253 bp->b_resid = bp->b_bcount; 254 } else 255 bp->b_resid = 0; 256 257 lddone(&sc->sc_ld, bp); 258 } 259 260 static int 261 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 262 { 263 264 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 265 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 266 } 267 268 static int 269 ld_twe_flush(struct ld_softc *ld, int flags) 270 { 271 struct ld_twe_softc *sc = (void *) ld; 272 struct twe_softc *twe = device_private(device_parent(ld->sc_dv)); 273 struct twe_ccb *ccb; 274 struct twe_cmd *tc; 275 int s, rv; 276 277 ccb = twe_ccb_alloc_wait(twe, 0); 278 KASSERT(ccb != NULL); 279 280 ccb->ccb_data = NULL; 281 ccb->ccb_datasize = 0; 282 283 tc = ccb->ccb_cmd; 284 tc->tc_size = 2; 285 tc->tc_opcode = TWE_OP_FLUSH; 286 tc->tc_unit = sc->sc_hwunit; 287 tc->tc_count = 0; 288 289 if (flags & LDFL_POLL) { 290 /* 291 * Polled commands must not sit on the software queue. Wait 292 * up to 2 seconds for the command to complete. 293 */ 294 s = splbio(); 295 rv = twe_ccb_poll(twe, ccb, 2000); 296 twe_ccb_unmap(twe, ccb); 297 twe_ccb_free(twe, ccb); 298 splx(s); 299 } else { 300 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 301 ccb->ccb_tx.tx_context = NULL; 302 ccb->ccb_tx.tx_dv = ld->sc_dv; 303 twe_ccb_enqueue(twe, ccb); 304 305 rv = 0; 306 s = splbio(); 307 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 308 if ((rv = tsleep(ccb, PRIBIO, "tweflush", 309 60 * hz)) != 0) 310 break; 311 twe_ccb_free(twe, ccb); 312 splx(s); 313 } 314 315 return (rv); 316 } 317 318 static void 319 ld_twe_adjqparam(device_t self, int openings) 320 { 321 struct ld_twe_softc *sc = device_private(self); 322 struct ld_softc *ld = &sc->sc_ld; 323 324 ldadjqparam(ld, openings); 325 } 326 327 MODULE(MODULE_CLASS_DRIVER, ld_twe, "ld,twe"); 328 329 #ifdef _MODULE 330 /* 331 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" 332 * XXX it will be defined in the common-code module 333 */ 334 #undef CFDRIVER_DECL 335 #define CFDRIVER_DECL(name, class, attr) 336 #include "ioconf.c" 337 #endif 338 339 static int 340 ld_twe_modcmd(modcmd_t cmd, void *opaque) 341 { 342 #ifdef _MODULE 343 /* 344 * We ignore the cfdriver_vec[] that ioconf provides, since 345 * the cfdrivers are attached already. 346 */ 347 static struct cfdriver * const no_cfdriver_vec[] = { NULL }; 348 #endif 349 int error = 0; 350 351 #ifdef _MODULE 352 switch (cmd) { 353 case MODULE_CMD_INIT: 354 error = config_init_component(no_cfdriver_vec, 355 cfattach_ioconf_ld_twe, cfdata_ioconf_ld_twe); 356 break; 357 case MODULE_CMD_FINI: 358 error = config_fini_component(no_cfdriver_vec, 359 cfattach_ioconf_ld_twe, cfdata_ioconf_ld_twe); 360 break; 361 default: 362 error = ENOTTY; 363 break; 364 } 365 #endif 366 367 return error; 368 } 369
Indexes created Thu Sep 25 16:09:42 GMT 2025