isp_target.c revision 1.24
1 /* $NetBSD: isp_target.c,v 1.24 2003/08/07 01:12:15 mjacob Exp $ */ 2 /* 3 * This driver, which is contained in NetBSD in the files: 4 * 5 * sys/dev/ic/isp.c 6 * sys/dev/ic/isp_inline.h 7 * sys/dev/ic/isp_netbsd.c 8 * sys/dev/ic/isp_netbsd.h 9 * sys/dev/ic/isp_target.c 10 * sys/dev/ic/isp_target.h 11 * sys/dev/ic/isp_tpublic.h 12 * sys/dev/ic/ispmbox.h 13 * sys/dev/ic/ispreg.h 14 * sys/dev/ic/ispvar.h 15 * sys/microcode/isp/asm_sbus.h 16 * sys/microcode/isp/asm_1040.h 17 * sys/microcode/isp/asm_1080.h 18 * sys/microcode/isp/asm_12160.h 19 * sys/microcode/isp/asm_2100.h 20 * sys/microcode/isp/asm_2200.h 21 * sys/pci/isp_pci.c 22 * sys/sbus/isp_sbus.c 23 * 24 * Is being actively maintained by Matthew Jacob (mjacob (at) netbsd.org). 25 * This driver also is shared source with FreeBSD, OpenBSD, Linux, Solaris, 26 * Linux versions. This tends to be an interesting maintenance problem. 27 * 28 * Please coordinate with Matthew Jacob on changes you wish to make here. 29 */ 30 /* 31 * Machine and OS Independent Target Mode Code for the Qlogic SCSI/FC adapters. 32 * 33 * Copyright (c) 1999, 2000, 2001 by Matthew Jacob 34 * All rights reserved. 35 * mjacob (at) feral.com 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice immediately at the beginning of the file, without modification, 42 * this list of conditions, and the following disclaimer. 43 * 2. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 50 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 */ 58 59 /* 60 * Bug fixes gratefully acknowledged from: 61 * Oded Kedem <oded (at) kashya.com> 62 */ 63 /* 64 * Include header file appropriate for platform we're building on. 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: isp_target.c,v 1.24 2003/08/07 01:12:15 mjacob Exp $"); 69 70 #ifdef __NetBSD__ 71 #include <dev/ic/isp_netbsd.h> 72 #endif 73 #ifdef __FreeBSD__ 74 #include <dev/isp/isp_freebsd.h> 75 #endif 76 #ifdef __OpenBSD__ 77 #include <dev/ic/isp_openbsd.h> 78 #endif 79 #ifdef __linux__ 80 #include "isp_linux.h" 81 #endif 82 83 #ifdef ISP_TARGET_MODE 84 static const char atiocope[] = 85 "ATIO returned for lun %d because it was in the middle of Bus Device Reset " 86 "on bus %d"; 87 static const char atior[] = 88 "ATIO returned on for lun %d on from IID %d because a Bus Reset occurred " 89 "on bus %d"; 90 91 static void isp_got_msg(struct ispsoftc *, int, in_entry_t *); 92 static void isp_got_msg_fc(struct ispsoftc *, int, in_fcentry_t *); 93 static void isp_notify_ack(struct ispsoftc *, void *); 94 static void isp_handle_atio(struct ispsoftc *, at_entry_t *); 95 static void isp_handle_atio2(struct ispsoftc *, at2_entry_t *); 96 static void isp_handle_ctio(struct ispsoftc *, ct_entry_t *); 97 static void isp_handle_ctio2(struct ispsoftc *, ct2_entry_t *); 98 99 /* 100 * The Qlogic driver gets an interrupt to look at response queue entries. 101 * Some of these are status completions for initiatior mode commands, but 102 * if target mode is enabled, we get a whole wad of response queue entries 103 * to be handled here. 104 * 105 * Basically the split into 3 main groups: Lun Enable/Modification responses, 106 * SCSI Command processing, and Immediate Notification events. 107 * 108 * You start by writing a request queue entry to enable target mode (and 109 * establish some resource limitations which you can modify later). 110 * The f/w responds with a LUN ENABLE or LUN MODIFY response with 111 * the status of this action. If the enable was successful, you can expect... 112 * 113 * Response queue entries with SCSI commands encapsulate show up in an ATIO 114 * (Accept Target IO) type- sometimes with enough info to stop the command at 115 * this level. Ultimately the driver has to feed back to the f/w's request 116 * queue a sequence of CTIOs (continue target I/O) that describe data to 117 * be moved and/or status to be sent) and finally finishing with sending 118 * to the f/w's response queue an ATIO which then completes the handshake 119 * with the f/w for that command. There's a lot of variations on this theme, 120 * including flags you can set in the CTIO for the Qlogic 2X00 fibre channel 121 * cards that 'auto-replenish' the f/w's ATIO count, but this is the basic 122 * gist of it. 123 * 124 * The third group that can show up in the response queue are Immediate 125 * Notification events. These include things like notifications of SCSI bus 126 * resets, or Bus Device Reset messages or other messages received. This 127 * a classic oddbins area. It can get a little weird because you then turn 128 * around and acknowledge the Immediate Notify by writing an entry onto the 129 * request queue and then the f/w turns around and gives you an acknowledgement 130 * to *your* acknowledgement on the response queue (the idea being to let 131 * the f/w tell you when the event is *really* over I guess). 132 * 133 */ 134 135 136 /* 137 * A new response queue entry has arrived. The interrupt service code 138 * has already swizzled it into the platform dependent from canonical form. 139 * 140 * Because of the way this driver is designed, unfortunately most of the 141 * actual synchronization work has to be done in the platform specific 142 * code- we have no synchroniation primitives in the common code. 143 */ 144 145 int 146 isp_target_notify(struct ispsoftc *isp, void *vptr, u_int16_t *optrp) 147 { 148 u_int16_t status, seqid; 149 union { 150 at_entry_t *atiop; 151 at2_entry_t *at2iop; 152 ct_entry_t *ctiop; 153 ct2_entry_t *ct2iop; 154 lun_entry_t *lunenp; 155 in_entry_t *inotp; 156 in_fcentry_t *inot_fcp; 157 na_entry_t *nackp; 158 na_fcentry_t *nack_fcp; 159 isphdr_t *hp; 160 void * *vp; 161 #define atiop unp.atiop 162 #define at2iop unp.at2iop 163 #define ctiop unp.ctiop 164 #define ct2iop unp.ct2iop 165 #define lunenp unp.lunenp 166 #define inotp unp.inotp 167 #define inot_fcp unp.inot_fcp 168 #define nackp unp.nackp 169 #define nack_fcp unp.nack_fcp 170 #define hdrp unp.hp 171 } unp; 172 u_int8_t local[QENTRY_LEN]; 173 int bus, type, rval = 1; 174 175 type = isp_get_response_type(isp, (isphdr_t *)vptr); 176 unp.vp = vptr; 177 178 ISP_TDQE(isp, "isp_target_notify", (int) *optrp, vptr); 179 180 switch(type) { 181 case RQSTYPE_ATIO: 182 isp_get_atio(isp, atiop, (at_entry_t *) local); 183 isp_handle_atio(isp, (at_entry_t *) local); 184 break; 185 case RQSTYPE_CTIO: 186 isp_get_ctio(isp, ctiop, (ct_entry_t *) local); 187 isp_handle_ctio(isp, (ct_entry_t *) local); 188 break; 189 case RQSTYPE_ATIO2: 190 isp_get_atio2(isp, at2iop, (at2_entry_t *) local); 191 isp_handle_atio2(isp, (at2_entry_t *) local); 192 break; 193 case RQSTYPE_CTIO2: 194 isp_get_ctio2(isp, ct2iop, (ct2_entry_t *) local); 195 isp_handle_ctio2(isp, (ct2_entry_t *) local); 196 break; 197 case RQSTYPE_ENABLE_LUN: 198 case RQSTYPE_MODIFY_LUN: 199 isp_get_enable_lun(isp, lunenp, (lun_entry_t *) local); 200 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, local); 201 break; 202 203 case RQSTYPE_NOTIFY: 204 /* 205 * Either the ISP received a SCSI message it can't 206 * handle, or it's returning an Immed. Notify entry 207 * we sent. We can send Immed. Notify entries to 208 * increment the firmware's resource count for them 209 * (we set this initially in the Enable Lun entry). 210 */ 211 bus = 0; 212 if (IS_FC(isp)) { 213 isp_get_notify_fc(isp, inot_fcp, (in_fcentry_t *)local); 214 inot_fcp = (in_fcentry_t *) local; 215 status = inot_fcp->in_status; 216 seqid = inot_fcp->in_seqid; 217 } else { 218 isp_get_notify(isp, inotp, (in_entry_t *)local); 219 inotp = (in_entry_t *) local; 220 status = inotp->in_status & 0xff; 221 seqid = inotp->in_seqid; 222 if (IS_DUALBUS(isp)) { 223 bus = GET_BUS_VAL(inotp->in_iid); 224 SET_BUS_VAL(inotp->in_iid, 0); 225 } 226 } 227 isp_prt(isp, ISP_LOGTDEBUG0, 228 "Immediate Notify On Bus %d, status=0x%x seqid=0x%x", 229 bus, status, seqid); 230 231 /* 232 * ACK it right away. 233 */ 234 isp_notify_ack(isp, (status == IN_RESET)? NULL : local); 235 switch (status) { 236 case IN_RESET: 237 (void) isp_async(isp, ISPASYNC_BUS_RESET, &bus); 238 break; 239 case IN_MSG_RECEIVED: 240 case IN_IDE_RECEIVED: 241 if (IS_FC(isp)) { 242 isp_got_msg_fc(isp, bus, (in_fcentry_t *)local); 243 } else { 244 isp_got_msg(isp, bus, (in_entry_t *)local); 245 } 246 break; 247 case IN_RSRC_UNAVAIL: 248 isp_prt(isp, ISP_LOGWARN, "Firmware out of ATIOs"); 249 break; 250 case IN_PORT_LOGOUT: 251 case IN_ABORT_TASK: 252 case IN_PORT_CHANGED: 253 case IN_GLOBAL_LOGO: 254 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, &local); 255 break; 256 default: 257 isp_prt(isp, ISP_LOGERR, 258 "bad status (0x%x) in isp_target_notify", status); 259 break; 260 } 261 break; 262 263 case RQSTYPE_NOTIFY_ACK: 264 /* 265 * The ISP is acknowledging our acknowledgement of an 266 * Immediate Notify entry for some asynchronous event. 267 */ 268 if (IS_FC(isp)) { 269 isp_get_notify_ack_fc(isp, nack_fcp, 270 (na_fcentry_t *)local); 271 nack_fcp = (na_fcentry_t *)local; 272 isp_prt(isp, ISP_LOGTDEBUG1, 273 "Notify Ack status=0x%x seqid 0x%x", 274 nack_fcp->na_status, nack_fcp->na_seqid); 275 } else { 276 isp_get_notify_ack(isp, nackp, (na_entry_t *)local); 277 nackp = (na_entry_t *)local; 278 isp_prt(isp, ISP_LOGTDEBUG1, 279 "Notify Ack event 0x%x status=0x%x seqid 0x%x", 280 nackp->na_event, nackp->na_status, nackp->na_seqid); 281 } 282 break; 283 default: 284 isp_prt(isp, ISP_LOGERR, 285 "Unknown entry type 0x%x in isp_target_notify", type); 286 rval = 0; 287 break; 288 } 289 #undef atiop 290 #undef at2iop 291 #undef ctiop 292 #undef ct2iop 293 #undef lunenp 294 #undef inotp 295 #undef inot_fcp 296 #undef nackp 297 #undef nack_fcp 298 #undef hdrp 299 return (rval); 300 } 301 302 303 /* 304 * Toggle (on/off) target mode for bus/target/lun 305 * 306 * The caller has checked for overlap and legality. 307 * 308 * Note that not all of bus, target or lun can be paid attention to. 309 * Note also that this action will not be complete until the f/w writes 310 * response entry. The caller is responsible for synchronizing this. 311 */ 312 int 313 isp_lun_cmd(struct ispsoftc *isp, int cmd, int bus, int tgt, int lun, 314 int cmd_cnt, int inot_cnt, u_int32_t opaque) 315 { 316 lun_entry_t el; 317 u_int16_t nxti, optr; 318 void *outp; 319 320 321 MEMZERO(&el, sizeof (el)); 322 if (IS_DUALBUS(isp)) { 323 el.le_rsvd = (bus & 0x1) << 7; 324 } 325 el.le_cmd_count = cmd_cnt; 326 el.le_in_count = inot_cnt; 327 if (cmd == RQSTYPE_ENABLE_LUN) { 328 if (IS_SCSI(isp)) { 329 el.le_flags = LUN_TQAE|LUN_DISAD; 330 el.le_cdb6len = 12; 331 el.le_cdb7len = 12; 332 } 333 } else if (cmd == -RQSTYPE_ENABLE_LUN) { 334 cmd = RQSTYPE_ENABLE_LUN; 335 el.le_cmd_count = 0; 336 el.le_in_count = 0; 337 } else if (cmd == -RQSTYPE_MODIFY_LUN) { 338 cmd = RQSTYPE_MODIFY_LUN; 339 el.le_ops = LUN_CCDECR | LUN_INDECR; 340 } else { 341 el.le_ops = LUN_CCINCR | LUN_ININCR; 342 } 343 el.le_header.rqs_entry_type = cmd; 344 el.le_header.rqs_entry_count = 1; 345 el.le_reserved = opaque; 346 if (IS_SCSI(isp)) { 347 el.le_tgt = tgt; 348 el.le_lun = lun; 349 } else if ((FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) == 0) { 350 el.le_lun = lun; 351 } 352 el.le_timeout = 2; 353 354 if (isp_getrqentry(isp, &nxti, &optr, &outp)) { 355 isp_prt(isp, ISP_LOGERR, 356 "Request Queue Overflow in isp_lun_cmd"); 357 return (-1); 358 } 359 ISP_TDQE(isp, "isp_lun_cmd", (int) optr, &el); 360 isp_put_enable_lun(isp, &el, outp); 361 ISP_ADD_REQUEST(isp, nxti); 362 return (0); 363 } 364 365 366 int 367 isp_target_put_entry(struct ispsoftc *isp, void *ap) 368 { 369 void *outp; 370 u_int16_t nxti, optr; 371 u_int8_t etype = ((isphdr_t *) ap)->rqs_entry_type; 372 373 if (isp_getrqentry(isp, &nxti, &optr, &outp)) { 374 isp_prt(isp, ISP_LOGWARN, 375 "Request Queue Overflow in isp_target_put_entry"); 376 return (-1); 377 } 378 switch (etype) { 379 case RQSTYPE_ATIO: 380 isp_put_atio(isp, (at_entry_t *) ap, (at_entry_t *) outp); 381 break; 382 case RQSTYPE_ATIO2: 383 isp_put_atio2(isp, (at2_entry_t *) ap, (at2_entry_t *) outp); 384 break; 385 case RQSTYPE_CTIO: 386 isp_put_ctio(isp, (ct_entry_t *) ap, (ct_entry_t *) outp); 387 break; 388 case RQSTYPE_CTIO2: 389 isp_put_ctio2(isp, (ct2_entry_t *) ap, (ct2_entry_t *) outp); 390 break; 391 default: 392 isp_prt(isp, ISP_LOGERR, 393 "Unknown type 0x%x in isp_put_entry", etype); 394 return (-1); 395 } 396 397 ISP_TDQE(isp, "isp_target_put_entry", (int) optr, ap); 398 ISP_ADD_REQUEST(isp, nxti); 399 return (0); 400 } 401 402 int 403 isp_target_put_atio(struct ispsoftc *isp, void *arg) 404 { 405 union { 406 at_entry_t _atio; 407 at2_entry_t _atio2; 408 } atun; 409 410 MEMZERO(&atun, sizeof atun); 411 if (IS_FC(isp)) { 412 at2_entry_t *aep = arg; 413 atun._atio2.at_header.rqs_entry_type = RQSTYPE_ATIO2; 414 atun._atio2.at_header.rqs_entry_count = 1; 415 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 416 atun._atio2.at_scclun = (u_int16_t) aep->at_scclun; 417 } else { 418 atun._atio2.at_lun = (u_int8_t) aep->at_lun; 419 } 420 atun._atio2.at_iid = aep->at_iid; 421 atun._atio2.at_rxid = aep->at_rxid; 422 atun._atio2.at_status = CT_OK; 423 } else { 424 at_entry_t *aep = arg; 425 atun._atio.at_header.rqs_entry_type = RQSTYPE_ATIO; 426 atun._atio.at_header.rqs_entry_count = 1; 427 atun._atio.at_handle = aep->at_handle; 428 atun._atio.at_iid = aep->at_iid; 429 atun._atio.at_tgt = aep->at_tgt; 430 atun._atio.at_lun = aep->at_lun; 431 atun._atio.at_tag_type = aep->at_tag_type; 432 atun._atio.at_tag_val = aep->at_tag_val; 433 atun._atio.at_status = (aep->at_flags & AT_TQAE); 434 atun._atio.at_status |= CT_OK; 435 } 436 return (isp_target_put_entry(isp, &atun)); 437 } 438 439 /* 440 * Command completion- both for handling cases of no resources or 441 * no blackhole driver, or other cases where we have to, inline, 442 * finish the command sanely, or for normal command completion. 443 * 444 * The 'completion' code value has the scsi status byte in the low 8 bits. 445 * If status is a CHECK CONDITION and bit 8 is nonzero, then bits 12..15 have 446 * the sense key and bits 16..23 have the ASCQ and bits 24..31 have the ASC 447 * values. 448 * 449 * NB: the key, asc, ascq, cannot be used for parallel SCSI as it doesn't 450 * NB: inline SCSI sense reporting. As such, we lose this information. XXX. 451 * 452 * For both parallel && fibre channel, we use the feature that does 453 * an automatic resource autoreplenish so we don't have then later do 454 * put of an atio to replenish the f/w's resource count. 455 */ 456 457 int 458 isp_endcmd(struct ispsoftc *isp, void *arg, u_int32_t code, u_int16_t hdl) 459 { 460 int sts; 461 union { 462 ct_entry_t _ctio; 463 ct2_entry_t _ctio2; 464 } un; 465 466 MEMZERO(&un, sizeof un); 467 sts = code & 0xff; 468 469 if (IS_FC(isp)) { 470 at2_entry_t *aep = arg; 471 ct2_entry_t *cto = &un._ctio2; 472 473 cto->ct_header.rqs_entry_type = RQSTYPE_CTIO2; 474 cto->ct_header.rqs_entry_count = 1; 475 cto->ct_iid = aep->at_iid; 476 if ((FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) == 0) { 477 cto->ct_lun = aep->at_lun; 478 } 479 cto->ct_rxid = aep->at_rxid; 480 cto->rsp.m1.ct_scsi_status = sts & 0xff; 481 cto->ct_flags = CT2_SENDSTATUS | CT2_NO_DATA | CT2_FLAG_MODE1; 482 if (hdl == 0) { 483 cto->ct_flags |= CT2_CCINCR; 484 } 485 if (aep->at_datalen) { 486 cto->ct_resid = aep->at_datalen; 487 cto->rsp.m1.ct_scsi_status |= CT2_DATA_UNDER; 488 } 489 if ((sts & 0xff) == SCSI_CHECK && (sts & ECMD_SVALID)) { 490 cto->rsp.m1.ct_resp[0] = 0xf0; 491 cto->rsp.m1.ct_resp[2] = (code >> 12) & 0xf; 492 cto->rsp.m1.ct_resp[7] = 8; 493 cto->rsp.m1.ct_resp[12] = (code >> 24) & 0xff; 494 cto->rsp.m1.ct_resp[13] = (code >> 16) & 0xff; 495 cto->rsp.m1.ct_senselen = 16; 496 cto->rsp.m1.ct_scsi_status |= CT2_SNSLEN_VALID; 497 } 498 cto->ct_syshandle = hdl; 499 } else { 500 at_entry_t *aep = arg; 501 ct_entry_t *cto = &un._ctio; 502 503 cto->ct_header.rqs_entry_type = RQSTYPE_CTIO; 504 cto->ct_header.rqs_entry_count = 1; 505 cto->ct_fwhandle = aep->at_handle; 506 cto->ct_iid = aep->at_iid; 507 cto->ct_tgt = aep->at_tgt; 508 cto->ct_lun = aep->at_lun; 509 cto->ct_tag_type = aep->at_tag_type; 510 cto->ct_tag_val = aep->at_tag_val; 511 if (aep->at_flags & AT_TQAE) { 512 cto->ct_flags |= CT_TQAE; 513 } 514 cto->ct_flags = CT_SENDSTATUS | CT_NO_DATA; 515 if (hdl == 0) { 516 cto->ct_flags |= CT_CCINCR; 517 } 518 cto->ct_scsi_status = sts; 519 cto->ct_syshandle = hdl; 520 } 521 return (isp_target_put_entry(isp, &un)); 522 } 523 524 int 525 isp_target_async(struct ispsoftc *isp, int bus, int event) 526 { 527 tmd_event_t evt; 528 tmd_msg_t msg; 529 530 switch (event) { 531 /* 532 * These three we handle here to propagate an effective bus reset 533 * upstream, but these do not require any immediate notify actions 534 * so we return when done. 535 */ 536 case ASYNC_LIP_F8: 537 case ASYNC_LIP_OCCURRED: 538 case ASYNC_LOOP_UP: 539 case ASYNC_LOOP_DOWN: 540 case ASYNC_LOOP_RESET: 541 case ASYNC_PTPMODE: 542 /* 543 * These don't require any immediate notify actions. We used 544 * treat them like SCSI Bus Resets, but that was just plain 545 * wrong. Let the normal CTIO completion report what occurred. 546 */ 547 return (0); 548 549 case ASYNC_BUS_RESET: 550 case ASYNC_TIMEOUT_RESET: 551 if (IS_FC(isp)) { 552 return (0); /* we'll be getting an inotify instead */ 553 } 554 evt.ev_bus = bus; 555 evt.ev_event = event; 556 (void) isp_async(isp, ISPASYNC_TARGET_EVENT, &evt); 557 break; 558 case ASYNC_DEVICE_RESET: 559 /* 560 * Bus Device Reset resets a specific target, so 561 * we pass this as a synthesized message. 562 */ 563 MEMZERO(&msg, sizeof msg); 564 if (IS_FC(isp)) { 565 msg.nt_iid = FCPARAM(isp)->isp_loopid; 566 } else { 567 msg.nt_iid = SDPARAM(isp)->isp_initiator_id; 568 } 569 msg.nt_bus = bus; 570 msg.nt_msg[0] = MSG_BUS_DEV_RESET; 571 (void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg); 572 break; 573 case ASYNC_CTIO_DONE: 574 evt.ev_bus = bus; 575 evt.ev_event = event; 576 (void) isp_async(isp, ISPASYNC_TARGET_EVENT, &evt); 577 return (0); 578 default: 579 isp_prt(isp, ISP_LOGERR, 580 "isp_target_async: unknown event 0x%x", event); 581 break; 582 } 583 if (isp->isp_state == ISP_RUNSTATE) 584 isp_notify_ack(isp, NULL); 585 return(0); 586 } 587 588 589 /* 590 * Process a received message. 591 * The ISP firmware can handle most messages, there are only 592 * a few that we need to deal with: 593 * - abort: clean up the current command 594 * - abort tag and clear queue 595 */ 596 597 static void 598 isp_got_msg(struct ispsoftc *isp, int bus, in_entry_t *inp) 599 { 600 u_int8_t status = inp->in_status & ~QLTM_SVALID; 601 602 if (status == IN_IDE_RECEIVED || status == IN_MSG_RECEIVED) { 603 tmd_msg_t msg; 604 605 MEMZERO(&msg, sizeof (msg)); 606 msg.nt_bus = bus; 607 msg.nt_iid = inp->in_iid; 608 msg.nt_tgt = inp->in_tgt; 609 msg.nt_lun = inp->in_lun; 610 msg.nt_tagtype = inp->in_tag_type; 611 msg.nt_tagval = inp->in_tag_val; 612 MEMCPY(msg.nt_msg, inp->in_msg, IN_MSGLEN); 613 (void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg); 614 } else { 615 isp_prt(isp, ISP_LOGERR, 616 "unknown immediate notify status 0x%x", inp->in_status); 617 } 618 } 619 620 /* 621 * Synthesize a message from the task management flags in a FCP_CMND_IU. 622 */ 623 static void 624 isp_got_msg_fc(struct ispsoftc *isp, int bus, in_fcentry_t *inp) 625 { 626 int lun; 627 static const char f1[] = "%s from iid %d lun %d seq 0x%x"; 628 static const char f2[] = 629 "unknown %s 0x%x lun %d iid %d task flags 0x%x seq 0x%x\n"; 630 631 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 632 lun = inp->in_scclun; 633 } else { 634 lun = inp->in_lun; 635 } 636 637 if (inp->in_status != IN_MSG_RECEIVED) { 638 isp_prt(isp, ISP_LOGINFO, f2, "immediate notify status", 639 inp->in_status, lun, inp->in_iid, 640 inp->in_task_flags, inp->in_seqid); 641 } else { 642 tmd_msg_t msg; 643 644 MEMZERO(&msg, sizeof (msg)); 645 msg.nt_bus = bus; 646 msg.nt_iid = inp->in_iid; 647 msg.nt_tagval = inp->in_seqid; 648 msg.nt_lun = lun; 649 650 if (inp->in_task_flags & TASK_FLAGS_ABORT_TASK) { 651 isp_prt(isp, ISP_LOGINFO, f1, "ABORT TASK", 652 inp->in_iid, lun, inp->in_seqid); 653 msg.nt_msg[0] = MSG_ABORT_TAG; 654 } else if (inp->in_task_flags & TASK_FLAGS_CLEAR_TASK_SET) { 655 isp_prt(isp, ISP_LOGINFO, f1, "CLEAR TASK SET", 656 inp->in_iid, lun, inp->in_seqid); 657 msg.nt_msg[0] = MSG_CLEAR_QUEUE; 658 } else if (inp->in_task_flags & TASK_FLAGS_TARGET_RESET) { 659 isp_prt(isp, ISP_LOGINFO, f1, "TARGET RESET", 660 inp->in_iid, lun, inp->in_seqid); 661 msg.nt_msg[0] = MSG_BUS_DEV_RESET; 662 } else if (inp->in_task_flags & TASK_FLAGS_CLEAR_ACA) { 663 isp_prt(isp, ISP_LOGINFO, f1, "CLEAR ACA", 664 inp->in_iid, lun, inp->in_seqid); 665 /* ???? */ 666 msg.nt_msg[0] = MSG_REL_RECOVERY; 667 } else if (inp->in_task_flags & TASK_FLAGS_TERMINATE_TASK) { 668 isp_prt(isp, ISP_LOGINFO, f1, "TERMINATE TASK", 669 inp->in_iid, lun, inp->in_seqid); 670 msg.nt_msg[0] = MSG_TERM_IO_PROC; 671 } else { 672 isp_prt(isp, ISP_LOGWARN, f2, "task flag", 673 inp->in_status, lun, inp->in_iid, 674 inp->in_task_flags, inp->in_seqid); 675 } 676 if (msg.nt_msg[0]) { 677 (void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg); 678 } 679 } 680 } 681 682 static void 683 isp_notify_ack(struct ispsoftc *isp, void *arg) 684 { 685 char storage[QENTRY_LEN]; 686 u_int16_t nxti, optr; 687 void *outp; 688 689 if (isp_getrqentry(isp, &nxti, &optr, &outp)) { 690 isp_prt(isp, ISP_LOGWARN, 691 "Request Queue Overflow For isp_notify_ack"); 692 return; 693 } 694 695 MEMZERO(storage, QENTRY_LEN); 696 697 if (IS_FC(isp)) { 698 na_fcentry_t *na = (na_fcentry_t *) storage; 699 if (arg) { 700 in_fcentry_t *inp = arg; 701 MEMCPY(storage, arg, sizeof (isphdr_t)); 702 na->na_iid = inp->in_iid; 703 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 704 na->na_lun = inp->in_scclun; 705 } else { 706 na->na_lun = inp->in_lun; 707 } 708 na->na_task_flags = inp->in_task_flags; 709 na->na_seqid = inp->in_seqid; 710 na->na_flags = NAFC_RCOUNT; 711 na->na_status = inp->in_status; 712 if (inp->in_status == IN_RESET) { 713 na->na_flags |= NAFC_RST_CLRD; 714 } 715 } else { 716 na->na_flags = NAFC_RST_CLRD; 717 } 718 na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK; 719 na->na_header.rqs_entry_count = 1; 720 isp_put_notify_ack_fc(isp, na, (na_fcentry_t *)outp); 721 } else { 722 na_entry_t *na = (na_entry_t *) storage; 723 if (arg) { 724 in_entry_t *inp = arg; 725 MEMCPY(storage, arg, sizeof (isphdr_t)); 726 na->na_iid = inp->in_iid; 727 na->na_lun = inp->in_lun; 728 na->na_tgt = inp->in_tgt; 729 na->na_seqid = inp->in_seqid; 730 if (inp->in_status == IN_RESET) { 731 na->na_event = NA_RST_CLRD; 732 } 733 } else { 734 na->na_event = NA_RST_CLRD; 735 } 736 na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK; 737 na->na_header.rqs_entry_count = 1; 738 isp_put_notify_ack(isp, na, (na_entry_t *)outp); 739 } 740 ISP_TDQE(isp, "isp_notify_ack", (int) optr, storage); 741 ISP_ADD_REQUEST(isp, nxti); 742 } 743 744 static void 745 isp_handle_atio(struct ispsoftc *isp, at_entry_t *aep) 746 { 747 int lun; 748 lun = aep->at_lun; 749 /* 750 * The firmware status (except for the QLTM_SVALID bit) indicates 751 * why this ATIO was sent to us. 752 * 753 * If QLTM_SVALID is set, the firware has recommended Sense Data. 754 * 755 * If the DISCONNECTS DISABLED bit is set in the flags field, 756 * we're still connected on the SCSI bus - i.e. the initiator 757 * did not set DiscPriv in the identify message. We don't care 758 * about this so it's ignored. 759 */ 760 761 switch(aep->at_status & ~QLTM_SVALID) { 762 case AT_PATH_INVALID: 763 /* 764 * ATIO rejected by the firmware due to disabled lun. 765 */ 766 isp_prt(isp, ISP_LOGERR, 767 "rejected ATIO for disabled lun %d", lun); 768 break; 769 case AT_NOCAP: 770 /* 771 * Requested Capability not available 772 * We sent an ATIO that overflowed the firmware's 773 * command resource count. 774 */ 775 isp_prt(isp, ISP_LOGERR, 776 "rejected ATIO for lun %d because of command count" 777 " overflow", lun); 778 break; 779 780 case AT_BDR_MSG: 781 /* 782 * If we send an ATIO to the firmware to increment 783 * its command resource count, and the firmware is 784 * recovering from a Bus Device Reset, it returns 785 * the ATIO with this status. We set the command 786 * resource count in the Enable Lun entry and do 787 * not increment it. Therefore we should never get 788 * this status here. 789 */ 790 isp_prt(isp, ISP_LOGERR, atiocope, lun, 791 GET_BUS_VAL(aep->at_iid)); 792 break; 793 794 case AT_CDB: /* Got a CDB */ 795 case AT_PHASE_ERROR: /* Bus Phase Sequence Error */ 796 /* 797 * Punt to platform specific layer. 798 */ 799 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, aep); 800 break; 801 802 case AT_RESET: 803 /* 804 * A bus reset came along and blew away this command. Why 805 * they do this in addition the async event code stuff, 806 * I dunno. 807 * 808 * Ignore it because the async event will clear things 809 * up for us. 810 */ 811 isp_prt(isp, ISP_LOGWARN, atior, lun, 812 GET_IID_VAL(aep->at_iid), GET_BUS_VAL(aep->at_iid)); 813 break; 814 815 816 default: 817 isp_prt(isp, ISP_LOGERR, 818 "Unknown ATIO status 0x%x from initiator %d for lun %d", 819 aep->at_status, aep->at_iid, lun); 820 (void) isp_target_put_atio(isp, aep); 821 break; 822 } 823 } 824 825 static void 826 isp_handle_atio2(struct ispsoftc *isp, at2_entry_t *aep) 827 { 828 int lun; 829 830 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 831 lun = aep->at_scclun; 832 } else { 833 lun = aep->at_lun; 834 } 835 836 /* 837 * The firmware status (except for the QLTM_SVALID bit) indicates 838 * why this ATIO was sent to us. 839 * 840 * If QLTM_SVALID is set, the firware has recommended Sense Data. 841 * 842 * If the DISCONNECTS DISABLED bit is set in the flags field, 843 * we're still connected on the SCSI bus - i.e. the initiator 844 * did not set DiscPriv in the identify message. We don't care 845 * about this so it's ignored. 846 */ 847 848 switch(aep->at_status & ~QLTM_SVALID) { 849 case AT_PATH_INVALID: 850 /* 851 * ATIO rejected by the firmware due to disabled lun. 852 */ 853 isp_prt(isp, ISP_LOGERR, 854 "rejected ATIO2 for disabled lun %d", lun); 855 break; 856 case AT_NOCAP: 857 /* 858 * Requested Capability not available 859 * We sent an ATIO that overflowed the firmware's 860 * command resource count. 861 */ 862 isp_prt(isp, ISP_LOGERR, 863 "rejected ATIO2 for lun %d- command count overflow", lun); 864 break; 865 866 case AT_BDR_MSG: 867 /* 868 * If we send an ATIO to the firmware to increment 869 * its command resource count, and the firmware is 870 * recovering from a Bus Device Reset, it returns 871 * the ATIO with this status. We set the command 872 * resource count in the Enable Lun entry and no 873 * not increment it. Therefore we should never get 874 * this status here. 875 */ 876 isp_prt(isp, ISP_LOGERR, atiocope, lun, 0); 877 break; 878 879 case AT_CDB: /* Got a CDB */ 880 /* 881 * Punt to platform specific layer. 882 */ 883 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, aep); 884 break; 885 886 case AT_RESET: 887 /* 888 * A bus reset came along an blew away this command. Why 889 * they do this in addition the async event code stuff, 890 * I dunno. 891 * 892 * Ignore it because the async event will clear things 893 * up for us. 894 */ 895 isp_prt(isp, ISP_LOGERR, atior, lun, aep->at_iid, 0); 896 break; 897 898 899 default: 900 isp_prt(isp, ISP_LOGERR, 901 "Unknown ATIO2 status 0x%x from initiator %d for lun %d", 902 aep->at_status, aep->at_iid, lun); 903 (void) isp_target_put_atio(isp, aep); 904 break; 905 } 906 } 907 908 static void 909 isp_handle_ctio(struct ispsoftc *isp, ct_entry_t *ct) 910 { 911 void *xs; 912 int pl = ISP_LOGTDEBUG2; 913 char *fmsg = NULL; 914 915 if (ct->ct_syshandle) { 916 xs = isp_find_xs(isp, ct->ct_syshandle); 917 if (xs == NULL) 918 pl = ISP_LOGALL; 919 } else { 920 xs = NULL; 921 } 922 923 switch(ct->ct_status & ~QLTM_SVALID) { 924 case CT_OK: 925 /* 926 * There are generally 3 possibilities as to why we'd get 927 * this condition: 928 * We disconnected after receiving a CDB. 929 * We sent or received data. 930 * We sent status & command complete. 931 */ 932 933 if (ct->ct_flags & CT_SENDSTATUS) { 934 break; 935 } else if ((ct->ct_flags & CT_DATAMASK) == CT_NO_DATA) { 936 /* 937 * Nothing to do in this case. 938 */ 939 isp_prt(isp, pl, "CTIO- iid %d disconnected OK", 940 ct->ct_iid); 941 return; 942 } 943 break; 944 945 case CT_BDR_MSG: 946 /* 947 * Bus Device Reset message received or the SCSI Bus has 948 * been Reset; the firmware has gone to Bus Free. 949 * 950 * The firmware generates an async mailbox interupt to 951 * notify us of this and returns outstanding CTIOs with this 952 * status. These CTIOs are handled in that same way as 953 * CT_ABORTED ones, so just fall through here. 954 */ 955 fmsg = "Bus Device Reset"; 956 /*FALLTHROUGH*/ 957 case CT_RESET: 958 if (fmsg == NULL) 959 fmsg = "Bus Reset"; 960 /*FALLTHROUGH*/ 961 case CT_ABORTED: 962 /* 963 * When an Abort message is received the firmware goes to 964 * Bus Free and returns all outstanding CTIOs with the status 965 * set, then sends us an Immediate Notify entry. 966 */ 967 if (fmsg == NULL) 968 fmsg = "ABORT TAG message sent by Initiator"; 969 970 isp_prt(isp, ISP_LOGWARN, "CTIO destroyed by %s", fmsg); 971 break; 972 973 case CT_INVAL: 974 /* 975 * CTIO rejected by the firmware due to disabled lun. 976 * "Cannot Happen". 977 */ 978 isp_prt(isp, ISP_LOGERR, 979 "Firmware rejected CTIO for disabled lun %d", 980 ct->ct_lun); 981 break; 982 983 case CT_NOPATH: 984 /* 985 * CTIO rejected by the firmware due "no path for the 986 * nondisconnecting nexus specified". This means that 987 * we tried to access the bus while a non-disconnecting 988 * command is in process. 989 */ 990 isp_prt(isp, ISP_LOGERR, 991 "Firmware rejected CTIO for bad nexus %d/%d/%d", 992 ct->ct_iid, ct->ct_tgt, ct->ct_lun); 993 break; 994 995 case CT_RSELTMO: 996 fmsg = "Reselection"; 997 /*FALLTHROUGH*/ 998 case CT_TIMEOUT: 999 if (fmsg == NULL) 1000 fmsg = "Command"; 1001 isp_prt(isp, ISP_LOGERR, "Firmware timed out on %s", fmsg); 1002 break; 1003 1004 case CT_PANIC: 1005 if (fmsg == NULL) 1006 fmsg = "Unrecoverable Error"; 1007 /*FALLTHROUGH*/ 1008 case CT_ERR: 1009 if (fmsg == NULL) 1010 fmsg = "Completed with Error"; 1011 /*FALLTHROUGH*/ 1012 case CT_PHASE_ERROR: 1013 if (fmsg == NULL) 1014 fmsg = "Phase Sequence Error"; 1015 /*FALLTHROUGH*/ 1016 case CT_TERMINATED: 1017 if (fmsg == NULL) 1018 fmsg = "terminated by TERMINATE TRANSFER"; 1019 /*FALLTHROUGH*/ 1020 case CT_NOACK: 1021 if (fmsg == NULL) 1022 fmsg = "unacknowledged Immediate Notify pending"; 1023 isp_prt(isp, ISP_LOGERR, "CTIO returned by f/w- %s", fmsg); 1024 break; 1025 default: 1026 isp_prt(isp, ISP_LOGERR, "Unknown CTIO status 0x%x", 1027 ct->ct_status & ~QLTM_SVALID); 1028 break; 1029 } 1030 1031 if (xs == NULL) { 1032 /* 1033 * There may be more than one CTIO for a data transfer, 1034 * or this may be a status CTIO we're not monitoring. 1035 * 1036 * The assumption is that they'll all be returned in the 1037 * order we got them. 1038 */ 1039 if (ct->ct_syshandle == 0) { 1040 if ((ct->ct_flags & CT_SENDSTATUS) == 0) { 1041 isp_prt(isp, pl, 1042 "intermediate CTIO completed ok"); 1043 } else { 1044 isp_prt(isp, pl, 1045 "unmonitored CTIO completed ok"); 1046 } 1047 } else { 1048 isp_prt(isp, pl, 1049 "NO xs for CTIO (handle 0x%x) status 0x%x", 1050 ct->ct_syshandle, ct->ct_status & ~QLTM_SVALID); 1051 } 1052 } else { 1053 /* 1054 * Final CTIO completed. Release DMA resources and 1055 * notify platform dependent layers. 1056 */ 1057 if ((ct->ct_flags & CT_DATAMASK) != CT_NO_DATA) { 1058 ISP_DMAFREE(isp, xs, ct->ct_syshandle); 1059 } 1060 isp_prt(isp, pl, "final CTIO complete"); 1061 /* 1062 * The platform layer will destroy the handle if appropriate. 1063 */ 1064 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, ct); 1065 } 1066 } 1067 1068 static void 1069 isp_handle_ctio2(struct ispsoftc *isp, ct2_entry_t *ct) 1070 { 1071 XS_T *xs; 1072 int pl = ISP_LOGTDEBUG2; 1073 char *fmsg = NULL; 1074 1075 if (ct->ct_syshandle) { 1076 xs = isp_find_xs(isp, ct->ct_syshandle); 1077 if (xs == NULL) 1078 pl = ISP_LOGALL; 1079 } else { 1080 xs = NULL; 1081 } 1082 1083 switch(ct->ct_status & ~QLTM_SVALID) { 1084 case CT_BUS_ERROR: 1085 isp_prt(isp, ISP_LOGERR, "PCI DMA Bus Error"); 1086 /* FALL Through */ 1087 case CT_DATA_OVER: 1088 case CT_DATA_UNDER: 1089 case CT_OK: 1090 /* 1091 * There are generally 2 possibilities as to why we'd get 1092 * this condition: 1093 * We sent or received data. 1094 * We sent status & command complete. 1095 */ 1096 1097 break; 1098 1099 case CT_BDR_MSG: 1100 /* 1101 * Target Reset function received. 1102 * 1103 * The firmware generates an async mailbox interupt to 1104 * notify us of this and returns outstanding CTIOs with this 1105 * status. These CTIOs are handled in that same way as 1106 * CT_ABORTED ones, so just fall through here. 1107 */ 1108 fmsg = "TARGET RESET Task Management Function Received"; 1109 /*FALLTHROUGH*/ 1110 case CT_RESET: 1111 if (fmsg == NULL) 1112 fmsg = "LIP Reset"; 1113 /*FALLTHROUGH*/ 1114 case CT_ABORTED: 1115 /* 1116 * When an Abort message is received the firmware goes to 1117 * Bus Free and returns all outstanding CTIOs with the status 1118 * set, then sends us an Immediate Notify entry. 1119 */ 1120 if (fmsg == NULL) 1121 fmsg = "ABORT Task Management Function Received"; 1122 1123 isp_prt(isp, ISP_LOGERR, "CTIO2 destroyed by %s", fmsg); 1124 break; 1125 1126 case CT_INVAL: 1127 /* 1128 * CTIO rejected by the firmware - invalid data direction. 1129 */ 1130 isp_prt(isp, ISP_LOGERR, "CTIO2 had wrong data directiond"); 1131 break; 1132 1133 case CT_RSELTMO: 1134 fmsg = "failure to reconnect to initiator"; 1135 /*FALLTHROUGH*/ 1136 case CT_TIMEOUT: 1137 if (fmsg == NULL) 1138 fmsg = "command"; 1139 isp_prt(isp, ISP_LOGERR, "Firmware timed out on %s", fmsg); 1140 break; 1141 1142 case CT_ERR: 1143 fmsg = "Completed with Error"; 1144 /*FALLTHROUGH*/ 1145 case CT_LOGOUT: 1146 if (fmsg == NULL) 1147 fmsg = "Port Logout"; 1148 /*FALLTHROUGH*/ 1149 case CT_PORTNOTAVAIL: 1150 if (fmsg == NULL) 1151 fmsg = "Port not available"; 1152 /*FALLTHROUGH*/ 1153 case CT_PORTCHANGED: 1154 if (fmsg == NULL) 1155 fmsg = "Port Changed"; 1156 /*FALLTHROUGH*/ 1157 case CT_NOACK: 1158 if (fmsg == NULL) 1159 fmsg = "unacknowledged Immediate Notify pending"; 1160 isp_prt(isp, ISP_LOGERR, "CTIO returned by f/w- %s", fmsg); 1161 break; 1162 1163 case CT_INVRXID: 1164 /* 1165 * CTIO rejected by the firmware because an invalid RX_ID. 1166 * Just print a message. 1167 */ 1168 isp_prt(isp, ISP_LOGERR, 1169 "CTIO2 completed with Invalid RX_ID 0x%x", ct->ct_rxid); 1170 break; 1171 1172 default: 1173 isp_prt(isp, ISP_LOGERR, "Unknown CTIO2 status 0x%x", 1174 ct->ct_status & ~QLTM_SVALID); 1175 break; 1176 } 1177 1178 if (xs == NULL) { 1179 /* 1180 * There may be more than one CTIO for a data transfer, 1181 * or this may be a status CTIO we're not monitoring. 1182 * 1183 * The assumption is that they'll all be returned in the 1184 * order we got them. 1185 */ 1186 if (ct->ct_syshandle == 0) { 1187 if ((ct->ct_flags & CT_SENDSTATUS) == 0) { 1188 isp_prt(isp, pl, 1189 "intermediate CTIO completed ok"); 1190 } else { 1191 isp_prt(isp, pl, 1192 "unmonitored CTIO completed ok"); 1193 } 1194 } else { 1195 isp_prt(isp, pl, 1196 "NO xs for CTIO (handle 0x%x) status 0x%x", 1197 ct->ct_syshandle, ct->ct_status & ~QLTM_SVALID); 1198 } 1199 } else { 1200 if ((ct->ct_flags & CT2_DATAMASK) != CT2_NO_DATA) { 1201 ISP_DMAFREE(isp, xs, ct->ct_syshandle); 1202 } 1203 if (ct->ct_flags & CT_SENDSTATUS) { 1204 /* 1205 * Sent status and command complete. 1206 * 1207 * We're now really done with this command, so we 1208 * punt to the platform dependent layers because 1209 * only there can we do the appropriate command 1210 * complete thread synchronization. 1211 */ 1212 isp_prt(isp, pl, "status CTIO complete"); 1213 } else { 1214 /* 1215 * Final CTIO completed. Release DMA resources and 1216 * notify platform dependent layers. 1217 */ 1218 isp_prt(isp, pl, "data CTIO complete"); 1219 } 1220 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, ct); 1221 /* 1222 * The platform layer will destroy the handle if appropriate. 1223 */ 1224 } 1225 } 1226 #endif 1227
Indexes created Thu Sep 25 08:09:54 GMT 2025