ld_twe.c revision 1.41
1 /* $NetBSD: ld_twe.c,v 1.41 2025/04/13 02:34:03 rin 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 1.41 2025/04/13 02:34:03 rin 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 *, daddr_t, int); 69 static int ld_twe_flush(struct ld_softc *, bool); 70 static int ld_twe_ioctl(struct ld_softc *, u_long, void *, int32_t, bool); 71 static void ld_twe_handler(struct twe_ccb *, int); 72 static int ld_twe_match(device_t, cfdata_t, void *); 73 static int ld_twe_start(struct ld_softc *, struct buf *); 74 75 static void ld_twe_adjqparam(device_t, int); 76 77 CFATTACH_DECL_NEW(ld_twe, sizeof(struct ld_twe_softc), 78 ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); 79 80 static const struct twe_callbacks ld_twe_callbacks = { 81 ld_twe_adjqparam, 82 }; 83 84 static int 85 ld_twe_match(device_t parent, cfdata_t match, void *aux) 86 { 87 88 return (1); 89 } 90 91 static void 92 ld_twe_attach(device_t parent, device_t self, void *aux) 93 { 94 struct twe_attach_args *twea = aux; 95 struct ld_twe_softc *sc = device_private(self); 96 struct ld_softc *ld = &sc->sc_ld; 97 struct twe_softc *twe = device_private(parent); 98 struct twe_drive *td = &twe->sc_units[twea->twea_unit]; 99 const char *typestr, *stripestr, *statstr; 100 char unktype[16], stripebuf[32], unkstat[32]; 101 int error; 102 uint8_t status; 103 104 ld->sc_dv = self; 105 106 twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); 107 108 sc->sc_hwunit = twea->twea_unit; 109 ld->sc_flags = LDF_ENABLED; 110 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 111 ld->sc_secperunit = td->td_size; 112 ld->sc_secsize = TWE_SECTOR_SIZE; 113 ld->sc_maxqueuecnt = twe->sc_openings; 114 ld->sc_start = ld_twe_start; 115 ld->sc_dump = ld_twe_dump; 116 ld->sc_ioctl = ld_twe_ioctl; 117 118 typestr = twe_describe_code(twe_table_unittype, td->td_type); 119 if (typestr == NULL) { 120 snprintf(unktype, sizeof(unktype), "<0x%02x>", td->td_type); 121 typestr = unktype; 122 } 123 switch (td->td_type) { 124 case TWE_AD_CONFIG_RAID0: 125 case TWE_AD_CONFIG_RAID5: 126 case TWE_AD_CONFIG_RAID10: 127 stripestr = twe_describe_code(twe_table_stripedepth, 128 td->td_stripe); 129 if (stripestr == NULL) 130 snprintf(stripebuf, sizeof(stripebuf), 131 "<stripe code 0x%02x> ", td->td_stripe); 132 else 133 snprintf(stripebuf, sizeof(stripebuf), "%s stripe ", 134 stripestr); 135 break; 136 default: 137 stripebuf[0] = '\0'; 138 } 139 140 error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, 141 TWE_PARAM_UNITINFO_Status, &status); 142 status &= TWE_PARAM_UNITSTATUS_MASK; 143 if (error) { 144 snprintf(unkstat, sizeof(unkstat), "<unknown>"); 145 statstr = unkstat; 146 } else if ((statstr = 147 twe_describe_code(twe_table_unitstate, status)) == NULL) { 148 snprintf(unkstat, sizeof(unkstat), "<status code 0x%02x>", 149 status); 150 statstr = unkstat; 151 } 152 153 aprint_normal(": %s%s, status: %s\n", stripebuf, typestr, statstr); 154 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); 155 } 156 157 static int 158 ld_twe_detach(device_t self, int flags) 159 { 160 struct ld_twe_softc *sc = device_private(self); 161 struct ld_softc *ld = &sc->sc_ld; 162 int rv; 163 164 if ((rv = ldbegindetach(ld, flags)) != 0) 165 return (rv); 166 ldenddetach(ld); 167 168 return (0); 169 } 170 171 static int 172 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 173 int dowrite, struct buf *bp) 174 { 175 struct twe_ccb *ccb; 176 struct twe_cmd *tc; 177 struct twe_softc *twe; 178 int s, rv, flags; 179 180 twe = device_private(device_parent(sc->sc_ld.sc_dv)); 181 182 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 183 if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) 184 return (EAGAIN); 185 186 ccb->ccb_data = data; 187 ccb->ccb_datasize = datasize; 188 tc = ccb->ccb_cmd; 189 190 /* Build the command. */ 191 tc->tc_size = 3; 192 tc->tc_unit = sc->sc_hwunit; 193 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 194 tc->tc_args.io.lba = htole32(blkno); 195 196 if (dowrite) 197 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 198 else 199 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 200 201 /* Map the data transfer. */ 202 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 203 twe_ccb_free(twe, ccb); 204 return (rv); 205 } 206 207 if (bp == NULL) { 208 /* 209 * Polled commands must not sit on the software queue. Wait 210 * up to 2 seconds for the command to complete. 211 */ 212 s = splbio(); 213 rv = twe_ccb_poll(twe, ccb, 2000); 214 twe_ccb_unmap(twe, ccb); 215 twe_ccb_free(twe, ccb); 216 splx(s); 217 } else { 218 ccb->ccb_tx.tx_handler = ld_twe_handler; 219 ccb->ccb_tx.tx_context = bp; 220 ccb->ccb_tx.tx_dv = sc->sc_ld.sc_dv; 221 twe_ccb_enqueue(twe, ccb); 222 rv = 0; 223 } 224 225 return (rv); 226 } 227 228 static int 229 ld_twe_start(struct ld_softc *ld, struct buf *bp) 230 { 231 232 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 233 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 234 } 235 236 static void 237 ld_twe_handler(struct twe_ccb *ccb, int error) 238 { 239 struct buf *bp; 240 struct twe_context *tx; 241 struct ld_twe_softc *sc; 242 struct twe_softc *twe; 243 244 tx = &ccb->ccb_tx; 245 bp = tx->tx_context; 246 sc = device_private(tx->tx_dv); 247 twe = device_private(device_parent(sc->sc_ld.sc_dv)); 248 249 twe_ccb_unmap(twe, ccb); 250 twe_ccb_free(twe, ccb); 251 252 if (error) { 253 bp->b_error = error; 254 bp->b_resid = bp->b_bcount; 255 } else 256 bp->b_resid = 0; 257 258 lddone(&sc->sc_ld, bp); 259 } 260 261 static int 262 ld_twe_dump(struct ld_softc *ld, void *data, daddr_t blkno, int blkcnt) 263 { 264 265 /* ld_twe_dobio() takes only an 'int' as a disk address */ 266 if (blkno + blkcnt - 1 > INT_MAX) 267 return (EIO); 268 269 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 270 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 271 } 272 273 static int 274 ld_twe_flush(struct ld_softc *ld, bool poll) 275 { 276 struct ld_twe_softc *sc = (void *) ld; 277 struct twe_softc *twe = device_private(device_parent(ld->sc_dv)); 278 struct twe_ccb *ccb; 279 struct twe_cmd *tc; 280 int s, rv; 281 282 ccb = twe_ccb_alloc_wait(twe, 0); 283 KASSERT(ccb != NULL); 284 285 ccb->ccb_data = NULL; 286 ccb->ccb_datasize = 0; 287 288 tc = ccb->ccb_cmd; 289 tc->tc_size = 2; 290 tc->tc_opcode = TWE_OP_FLUSH; 291 tc->tc_unit = sc->sc_hwunit; 292 tc->tc_count = 0; 293 294 if (poll) { 295 /* 296 * Polled commands must not sit on the software queue. Wait 297 * up to 2 seconds for the command to complete. 298 */ 299 s = splbio(); 300 rv = twe_ccb_poll(twe, ccb, 2000); 301 twe_ccb_unmap(twe, ccb); 302 twe_ccb_free(twe, ccb); 303 splx(s); 304 } else { 305 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 306 ccb->ccb_tx.tx_context = NULL; 307 ccb->ccb_tx.tx_dv = ld->sc_dv; 308 twe_ccb_enqueue(twe, ccb); 309 310 rv = 0; 311 s = splbio(); 312 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 313 if ((rv = tsleep(ccb, PRIBIO, "tweflush", 314 60 * hz)) != 0) 315 break; 316 twe_ccb_free(twe, ccb); 317 splx(s); 318 } 319 320 return (rv); 321 } 322 323 static int 324 ld_twe_ioctl(struct ld_softc *ld, u_long cmd, void *addr, int32_t flag, bool poll) 325 { 326 int error; 327 328 switch (cmd) { 329 case DIOCCACHESYNC: 330 error = ld_twe_flush(ld, poll); 331 break; 332 333 default: 334 error = EPASSTHROUGH; 335 break; 336 } 337 338 return error; 339 } 340 341 static void 342 ld_twe_adjqparam(device_t self, int openings) 343 { 344 struct ld_twe_softc *sc = device_private(self); 345 struct ld_softc *ld = &sc->sc_ld; 346 347 ldadjqparam(ld, openings); 348 } 349 350 MODULE(MODULE_CLASS_DRIVER, ld_twe, "ld,twe"); 351 352 #ifdef _MODULE 353 /* 354 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" 355 * XXX it will be defined in the common-code module 356 */ 357 #undef CFDRIVER_DECL 358 #define CFDRIVER_DECL(name, class, attr) 359 #include "ioconf.c" 360 #endif 361 362 static int 363 ld_twe_modcmd(modcmd_t cmd, void *opaque) 364 { 365 #ifdef _MODULE 366 /* 367 * We ignore the cfdriver_vec[] that ioconf provides, since 368 * the cfdrivers are attached already. 369 */ 370 static struct cfdriver * const no_cfdriver_vec[] = { NULL }; 371 #endif 372 int error = 0; 373 374 #ifdef _MODULE 375 switch (cmd) { 376 case MODULE_CMD_INIT: 377 error = config_init_component(no_cfdriver_vec, 378 cfattach_ioconf_ld_twe, cfdata_ioconf_ld_twe); 379 break; 380 case MODULE_CMD_FINI: 381 error = config_fini_component(no_cfdriver_vec, 382 cfattach_ioconf_ld_twe, cfdata_ioconf_ld_twe); 383 break; 384 default: 385 error = ENOTTY; 386 break; 387 } 388 #endif 389 390 return error; 391 } 392
Indexes created Tue Sep 23 02:09:52 GMT 2025