ld_iop.c revision 1.13
1 /* $NetBSD: ld_iop.c,v 1.13 2002/10/02 16:33:53 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2001 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 * I2O front-end for ld(4) driver, supporting random block storage class 41 * devices. Currently, this doesn't handle anything more complex than 42 * fixed direct-access devices. 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: ld_iop.c,v 1.13 2002/10/02 16:33:53 thorpej Exp $"); 47 48 #include "opt_i2o.h" 49 #include "rnd.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/device.h> 55 #include <sys/buf.h> 56 #include <sys/endian.h> 57 #include <sys/dkio.h> 58 #include <sys/disk.h> 59 #include <sys/proc.h> 60 #if NRND > 0 61 #include <sys/rnd.h> 62 #endif 63 64 #include <machine/bus.h> 65 66 #include <dev/ldvar.h> 67 68 #include <dev/i2o/i2o.h> 69 #include <dev/i2o/iopio.h> 70 #include <dev/i2o/iopvar.h> 71 72 #define LD_IOP_TIMEOUT 30*1000 73 74 #define LD_IOP_CLAIMED 0x01 75 #define LD_IOP_NEW_EVTMASK 0x02 76 77 struct ld_iop_softc { 78 struct ld_softc sc_ld; 79 struct iop_initiator sc_ii; 80 struct iop_initiator sc_eventii; 81 int sc_flags; 82 }; 83 84 static void ld_iop_adjqparam(struct device *, int); 85 static void ld_iop_attach(struct device *, struct device *, void *); 86 static int ld_iop_detach(struct device *, int); 87 static int ld_iop_dump(struct ld_softc *, void *, int, int); 88 static int ld_iop_flush(struct ld_softc *); 89 static void ld_iop_intr(struct device *, struct iop_msg *, void *); 90 static void ld_iop_intr_event(struct device *, struct iop_msg *, void *); 91 static int ld_iop_match(struct device *, struct cfdata *, void *); 92 static int ld_iop_start(struct ld_softc *, struct buf *); 93 static void ld_iop_unconfig(struct ld_iop_softc *, int); 94 95 CFATTACH_DECL(ld_iop, sizeof(struct ld_iop_softc), 96 ld_iop_match, ld_iop_attach, ld_iop_detach, NULL); 97 98 #ifdef I2OVERBOSE 99 static const char * const ld_iop_errors[] = { 100 "success", 101 "media error", 102 "access error", 103 "device failure", 104 "device not ready", 105 "media not present", 106 "media locked", 107 "media failure", 108 "protocol failure", 109 "bus failure", 110 "access violation", 111 "media write protected", 112 "device reset", 113 "volume changed, waiting for acknowledgement", 114 "timeout", 115 }; 116 #endif 117 118 static int 119 ld_iop_match(struct device *parent, struct cfdata *match, void *aux) 120 { 121 struct iop_attach_args *ia; 122 123 ia = aux; 124 125 return (ia->ia_class == I2O_CLASS_RANDOM_BLOCK_STORAGE); 126 } 127 128 static void 129 ld_iop_attach(struct device *parent, struct device *self, void *aux) 130 { 131 struct iop_attach_args *ia; 132 struct ld_softc *ld; 133 struct ld_iop_softc *sc; 134 struct iop_softc *iop; 135 int rv, evreg, enable; 136 char *typestr, *fixedstr; 137 u_int cachesz; 138 u_int32_t timeoutbase, rwvtimeoutbase, rwvtimeout; 139 struct { 140 struct i2o_param_op_results pr; 141 struct i2o_param_read_results prr; 142 union { 143 struct i2o_param_rbs_cache_control cc; 144 struct i2o_param_rbs_device_info bdi; 145 } p; 146 } __attribute__ ((__packed__)) param; 147 148 sc = (struct ld_iop_softc *)self; 149 ld = &sc->sc_ld; 150 iop = (struct iop_softc *)parent; 151 ia = (struct iop_attach_args *)aux; 152 evreg = 0; 153 154 /* Register us as an initiator. */ 155 sc->sc_ii.ii_dv = self; 156 sc->sc_ii.ii_intr = ld_iop_intr; 157 sc->sc_ii.ii_adjqparam = ld_iop_adjqparam; 158 sc->sc_ii.ii_flags = 0; 159 sc->sc_ii.ii_tid = ia->ia_tid; 160 iop_initiator_register(iop, &sc->sc_ii); 161 162 /* Register another initiator to handle events from the device. */ 163 sc->sc_eventii.ii_dv = self; 164 sc->sc_eventii.ii_intr = ld_iop_intr_event; 165 sc->sc_eventii.ii_flags = II_NOTCTX | II_UTILITY; 166 sc->sc_eventii.ii_tid = ia->ia_tid; 167 iop_initiator_register(iop, &sc->sc_eventii); 168 169 rv = iop_util_eventreg(iop, &sc->sc_eventii, 170 I2O_EVENT_GEN_EVENT_MASK_MODIFIED | 171 I2O_EVENT_GEN_DEVICE_RESET | 172 I2O_EVENT_GEN_STATE_CHANGE | 173 I2O_EVENT_GEN_GENERAL_WARNING); 174 if (rv != 0) { 175 printf("%s: unable to register for events", self->dv_xname); 176 goto bad; 177 } 178 evreg = 1; 179 180 /* 181 * Start out with one queued command. The `iop' driver will adjust 182 * the queue parameters once we're up and running. 183 */ 184 ld->sc_maxqueuecnt = 1; 185 186 ld->sc_maxxfer = IOP_MAX_XFER; 187 ld->sc_dump = ld_iop_dump; 188 ld->sc_flush = ld_iop_flush; 189 ld->sc_start = ld_iop_start; 190 191 /* Say what the device is. */ 192 printf(":"); 193 iop_print_ident(iop, ia->ia_tid); 194 195 /* 196 * Claim the device so that we don't get any nasty surprises. Allow 197 * failure. 198 */ 199 rv = iop_util_claim(iop, &sc->sc_ii, 0, 200 I2O_UTIL_CLAIM_CAPACITY_SENSITIVE | 201 I2O_UTIL_CLAIM_NO_PEER_SERVICE | 202 I2O_UTIL_CLAIM_NO_MANAGEMENT_SERVICE | 203 I2O_UTIL_CLAIM_PRIMARY_USER); 204 sc->sc_flags = rv ? 0 : LD_IOP_CLAIMED; 205 206 rv = iop_field_get_all(iop, ia->ia_tid, I2O_PARAM_RBS_DEVICE_INFO, 207 ¶m, sizeof(param), NULL); 208 if (rv != 0) 209 goto bad; 210 211 ld->sc_secsize = le32toh(param.p.bdi.blocksize); 212 ld->sc_secperunit = (int) 213 (le64toh(param.p.bdi.capacity) / ld->sc_secsize); 214 215 switch (param.p.bdi.type) { 216 case I2O_RBS_TYPE_DIRECT: 217 typestr = "direct access"; 218 enable = 1; 219 break; 220 case I2O_RBS_TYPE_WORM: 221 typestr = "WORM"; 222 enable = 0; 223 break; 224 case I2O_RBS_TYPE_CDROM: 225 typestr = "CD-ROM"; 226 enable = 0; 227 break; 228 case I2O_RBS_TYPE_OPTICAL: 229 typestr = "optical"; 230 enable = 0; 231 break; 232 default: 233 typestr = "unknown"; 234 enable = 0; 235 break; 236 } 237 238 if ((le32toh(param.p.bdi.capabilities) & I2O_RBS_CAP_REMOVEABLE_MEDIA) 239 != 0) { 240 /* ld->sc_flags = LDF_REMOVEABLE; */ 241 fixedstr = "removeable"; 242 enable = 0; 243 } else 244 fixedstr = "fixed"; 245 246 printf(" %s, %s", typestr, fixedstr); 247 248 /* 249 * Determine if the device has an private cache. If so, print the 250 * cache size. Even if the device doesn't appear to have a cache, 251 * we perform a flush at shutdown. 252 */ 253 rv = iop_field_get_all(iop, ia->ia_tid, I2O_PARAM_RBS_CACHE_CONTROL, 254 ¶m, sizeof(param), NULL); 255 if (rv != 0) 256 goto bad; 257 258 if ((cachesz = le32toh(param.p.cc.totalcachesize)) != 0) 259 printf(", %dkB cache", cachesz >> 10); 260 261 printf("\n"); 262 263 /* 264 * Configure the DDM's timeout functions to time out all commands 265 * after 30 seconds. 266 */ 267 timeoutbase = htole32(LD_IOP_TIMEOUT * 1000); 268 rwvtimeoutbase = htole32(LD_IOP_TIMEOUT * 1000); 269 rwvtimeout = 0; 270 271 iop_field_set(iop, ia->ia_tid, I2O_PARAM_RBS_OPERATION, 272 &timeoutbase, sizeof(timeoutbase), 273 I2O_PARAM_RBS_OPERATION_timeoutbase); 274 iop_field_set(iop, ia->ia_tid, I2O_PARAM_RBS_OPERATION, 275 &rwvtimeoutbase, sizeof(rwvtimeoutbase), 276 I2O_PARAM_RBS_OPERATION_rwvtimeoutbase); 277 iop_field_set(iop, ia->ia_tid, I2O_PARAM_RBS_OPERATION, 278 &rwvtimeout, sizeof(rwvtimeout), 279 I2O_PARAM_RBS_OPERATION_rwvtimeoutbase); 280 281 if (enable) 282 ld->sc_flags |= LDF_ENABLED; 283 else 284 printf("%s: device not yet supported\n", self->dv_xname); 285 286 ldattach(ld); 287 return; 288 289 bad: 290 ld_iop_unconfig(sc, evreg); 291 } 292 293 static void 294 ld_iop_unconfig(struct ld_iop_softc *sc, int evreg) 295 { 296 struct iop_softc *iop; 297 int s; 298 299 iop = (struct iop_softc *)sc->sc_ld.sc_dv.dv_parent; 300 301 if ((sc->sc_flags & LD_IOP_CLAIMED) != 0) 302 iop_util_claim(iop, &sc->sc_ii, 1, 303 I2O_UTIL_CLAIM_PRIMARY_USER); 304 305 if (evreg) { 306 /* 307 * Mask off events, and wait up to 5 seconds for a reply. 308 * Note that some adapters won't reply to this (XXX We 309 * should check the event capabilities). 310 */ 311 sc->sc_flags &= ~LD_IOP_NEW_EVTMASK; 312 iop_util_eventreg(iop, &sc->sc_eventii, 313 I2O_EVENT_GEN_EVENT_MASK_MODIFIED); 314 s = splbio(); 315 if ((sc->sc_flags & LD_IOP_NEW_EVTMASK) == 0) 316 tsleep(&sc->sc_eventii, PRIBIO, "ld_iopevt", hz * 5); 317 splx(s); 318 #ifdef I2ODEBUG 319 if ((sc->sc_flags & LD_IOP_NEW_EVTMASK) == 0) 320 printf("%s: didn't reply to event unregister", 321 sc->sc_ld.sc_dv.dv_xname); 322 #endif 323 } 324 325 iop_initiator_unregister(iop, &sc->sc_eventii); 326 iop_initiator_unregister(iop, &sc->sc_ii); 327 } 328 329 static int 330 ld_iop_detach(struct device *self, int flags) 331 { 332 struct ld_iop_softc *sc; 333 struct iop_softc *iop; 334 int rv; 335 336 sc = (struct ld_iop_softc *)self; 337 iop = (struct iop_softc *)self->dv_parent; 338 339 if ((rv = ldbegindetach(&sc->sc_ld, flags)) != 0) 340 return (rv); 341 342 /* 343 * Abort any requests queued with the IOP, but allow requests that 344 * are already in progress to complete. 345 */ 346 if ((sc->sc_ld.sc_flags & LDF_ENABLED) != 0) 347 iop_util_abort(iop, &sc->sc_ii, 0, 0, 348 I2O_UTIL_ABORT_WILD | I2O_UTIL_ABORT_CLEAN); 349 350 ldenddetach(&sc->sc_ld); 351 352 /* Un-claim the target, and un-register our initiators. */ 353 if ((sc->sc_ld.sc_flags & LDF_ENABLED) != 0) 354 ld_iop_unconfig(sc, 1); 355 356 return (0); 357 } 358 359 static int 360 ld_iop_start(struct ld_softc *ld, struct buf *bp) 361 { 362 struct iop_msg *im; 363 struct iop_softc *iop; 364 struct ld_iop_softc *sc; 365 struct i2o_rbs_block_read *mf; 366 u_int rv, flags, write; 367 u_int64_t ba; 368 u_int32_t mb[IOP_MAX_MSG_SIZE / sizeof(u_int32_t)]; 369 370 sc = (struct ld_iop_softc *)ld; 371 iop = (struct iop_softc *)ld->sc_dv.dv_parent; 372 373 im = iop_msg_alloc(iop, 0); 374 im->im_dvcontext = bp; 375 376 write = ((bp->b_flags & B_READ) == 0); 377 ba = (u_int64_t)bp->b_rawblkno * ld->sc_secsize; 378 379 /* 380 * Write through the cache when performing synchronous writes. When 381 * performing a read, we don't request that the DDM cache the data, 382 * as there's little advantage to it. 383 */ 384 if (write) { 385 if ((bp->b_flags & B_ASYNC) == 0) 386 flags = I2O_RBS_BLOCK_WRITE_CACHE_WT; 387 else 388 flags = I2O_RBS_BLOCK_WRITE_CACHE_WB; 389 } else 390 flags = 0; 391 392 /* 393 * Fill the message frame. We can use the block_read structure for 394 * both reads and writes, as it's almost identical to the 395 * block_write structure. 396 */ 397 mf = (struct i2o_rbs_block_read *)mb; 398 mf->msgflags = I2O_MSGFLAGS(i2o_rbs_block_read); 399 mf->msgfunc = I2O_MSGFUNC(sc->sc_ii.ii_tid, 400 write ? I2O_RBS_BLOCK_WRITE : I2O_RBS_BLOCK_READ); 401 mf->msgictx = sc->sc_ii.ii_ictx; 402 mf->msgtctx = im->im_tctx; 403 mf->flags = flags | (1 << 16); /* flags & time multiplier */ 404 mf->datasize = bp->b_bcount; 405 mf->lowoffset = (u_int32_t)ba; 406 mf->highoffset = (u_int32_t)(ba >> 32); 407 408 /* Map the data transfer and enqueue the command. */ 409 rv = iop_msg_map_bio(iop, im, mb, bp->b_data, bp->b_bcount, write); 410 if (rv == 0) { 411 if ((rv = iop_post(iop, mb)) != 0) { 412 iop_msg_unmap(iop, im); 413 iop_msg_free(iop, im); 414 } 415 } 416 return (rv); 417 } 418 419 static int 420 ld_iop_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 421 { 422 struct iop_msg *im; 423 struct iop_softc *iop; 424 struct ld_iop_softc *sc; 425 struct i2o_rbs_block_write *mf; 426 int rv, bcount; 427 u_int64_t ba; 428 u_int32_t mb[IOP_MAX_MSG_SIZE / sizeof(u_int32_t)]; 429 430 sc = (struct ld_iop_softc *)ld; 431 iop = (struct iop_softc *)ld->sc_dv.dv_parent; 432 bcount = blkcnt * ld->sc_secsize; 433 ba = (u_int64_t)blkno * ld->sc_secsize; 434 im = iop_msg_alloc(iop, IM_POLL); 435 436 mf = (struct i2o_rbs_block_write *)mb; 437 mf->msgflags = I2O_MSGFLAGS(i2o_rbs_block_write); 438 mf->msgfunc = I2O_MSGFUNC(sc->sc_ii.ii_tid, I2O_RBS_BLOCK_WRITE); 439 mf->msgictx = sc->sc_ii.ii_ictx; 440 mf->msgtctx = im->im_tctx; 441 mf->flags = I2O_RBS_BLOCK_WRITE_CACHE_WT | (1 << 16); 442 mf->datasize = bcount; 443 mf->lowoffset = (u_int32_t)ba; 444 mf->highoffset = (u_int32_t)(ba >> 32); 445 446 if ((rv = iop_msg_map(iop, im, mb, data, bcount, 1, NULL)) != 0) { 447 iop_msg_free(iop, im); 448 return (rv); 449 } 450 451 rv = iop_msg_post(iop, im, mb, LD_IOP_TIMEOUT * 2); 452 iop_msg_unmap(iop, im); 453 iop_msg_free(iop, im); 454 return (rv); 455 } 456 457 static int 458 ld_iop_flush(struct ld_softc *ld) 459 { 460 struct iop_msg *im; 461 struct iop_softc *iop; 462 struct ld_iop_softc *sc; 463 struct i2o_rbs_cache_flush mf; 464 int rv; 465 466 sc = (struct ld_iop_softc *)ld; 467 iop = (struct iop_softc *)ld->sc_dv.dv_parent; 468 im = iop_msg_alloc(iop, IM_WAIT); 469 470 mf.msgflags = I2O_MSGFLAGS(i2o_rbs_cache_flush); 471 mf.msgfunc = I2O_MSGFUNC(sc->sc_ii.ii_tid, I2O_RBS_CACHE_FLUSH); 472 mf.msgictx = sc->sc_ii.ii_ictx; 473 mf.msgtctx = im->im_tctx; 474 mf.flags = 1 << 16; /* time multiplier */ 475 476 /* XXX Aincent disks will return an error here. */ 477 rv = iop_msg_post(iop, im, &mf, LD_IOP_TIMEOUT * 2); 478 iop_msg_free(iop, im); 479 return (rv); 480 } 481 482 void 483 ld_iop_intr(struct device *dv, struct iop_msg *im, void *reply) 484 { 485 struct i2o_rbs_reply *rb; 486 struct buf *bp; 487 struct ld_iop_softc *sc; 488 struct iop_softc *iop; 489 int err, detail; 490 #ifdef I2OVERBOSE 491 const char *errstr; 492 #endif 493 494 rb = reply; 495 bp = im->im_dvcontext; 496 sc = (struct ld_iop_softc *)dv; 497 iop = (struct iop_softc *)dv->dv_parent; 498 499 err = ((rb->msgflags & I2O_MSGFLAGS_FAIL) != 0); 500 501 if (!err && rb->reqstatus != I2O_STATUS_SUCCESS) { 502 detail = le16toh(rb->detail); 503 #ifdef I2OVERBOSE 504 if (detail > sizeof(ld_iop_errors) / sizeof(ld_iop_errors[0])) 505 errstr = "<unknown>"; 506 else 507 errstr = ld_iop_errors[detail]; 508 printf("%s: error 0x%04x: %s\n", dv->dv_xname, detail, errstr); 509 #else 510 printf("%s: error 0x%04x\n", dv->dv_xname, detail); 511 #endif 512 err = 1; 513 } 514 515 if (err) { 516 bp->b_flags |= B_ERROR; 517 bp->b_error = EIO; 518 bp->b_resid = bp->b_bcount; 519 } else 520 bp->b_resid = bp->b_bcount - le32toh(rb->transfercount); 521 522 iop_msg_unmap(iop, im); 523 iop_msg_free(iop, im); 524 lddone(&sc->sc_ld, bp); 525 } 526 527 static void 528 ld_iop_intr_event(struct device *dv, struct iop_msg *im, void *reply) 529 { 530 struct i2o_util_event_register_reply *rb; 531 struct ld_iop_softc *sc; 532 u_int event; 533 534 rb = reply; 535 536 if ((rb->msgflags & I2O_MSGFLAGS_FAIL) != 0) 537 return; 538 539 event = le32toh(rb->event); 540 sc = (struct ld_iop_softc *)dv; 541 542 if (event == I2O_EVENT_GEN_EVENT_MASK_MODIFIED) { 543 sc->sc_flags |= LD_IOP_NEW_EVTMASK; 544 wakeup(&sc->sc_eventii); 545 #ifndef I2ODEBUG 546 return; 547 #endif 548 } 549 550 printf("%s: event 0x%08x received\n", dv->dv_xname, event); 551 } 552 553 static void 554 ld_iop_adjqparam(struct device *dv, int mpi) 555 { 556 struct iop_softc *iop; 557 558 /* 559 * AMI controllers seem to loose the plot if you hand off lots of 560 * queued commands. 561 */ 562 iop = (struct iop_softc *)dv->dv_parent; 563 if (le16toh(I2O_ORG_AMI) == iop->sc_status.orgid && mpi > 64) 564 mpi = 64; 565 566 ldadjqparam((struct ld_softc *)dv, mpi); 567 } 568
Indexes created Wed Sep 24 05:09:52 GMT 2025