isp_target.c revision 1.23
1 /* $NetBSD: isp_target.c,v 1.23 2003/03/03 20:54:12 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 1.23 2003/03/03 20:54:12 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 default: 574 isp_prt(isp, ISP_LOGERR, 575 "isp_target_async: unknown event 0x%x", event); 576 break; 577 } 578 if (isp->isp_state == ISP_RUNSTATE) 579 isp_notify_ack(isp, NULL); 580 return(0); 581 } 582 583 584 /* 585 * Process a received message. 586 * The ISP firmware can handle most messages, there are only 587 * a few that we need to deal with: 588 * - abort: clean up the current command 589 * - abort tag and clear queue 590 */ 591 592 static void 593 isp_got_msg(struct ispsoftc *isp, int bus, in_entry_t *inp) 594 { 595 u_int8_t status = inp->in_status & ~QLTM_SVALID; 596 597 if (status == IN_IDE_RECEIVED || status == IN_MSG_RECEIVED) { 598 tmd_msg_t msg; 599 600 MEMZERO(&msg, sizeof (msg)); 601 msg.nt_bus = bus; 602 msg.nt_iid = inp->in_iid; 603 msg.nt_tgt = inp->in_tgt; 604 msg.nt_lun = inp->in_lun; 605 msg.nt_tagtype = inp->in_tag_type; 606 msg.nt_tagval = inp->in_tag_val; 607 MEMCPY(msg.nt_msg, inp->in_msg, IN_MSGLEN); 608 (void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg); 609 } else { 610 isp_prt(isp, ISP_LOGERR, 611 "unknown immediate notify status 0x%x", inp->in_status); 612 } 613 } 614 615 /* 616 * Synthesize a message from the task management flags in a FCP_CMND_IU. 617 */ 618 static void 619 isp_got_msg_fc(struct ispsoftc *isp, int bus, in_fcentry_t *inp) 620 { 621 int lun; 622 static const char f1[] = "%s from iid %d lun %d seq 0x%x"; 623 static const char f2[] = 624 "unknown %s 0x%x lun %d iid %d task flags 0x%x seq 0x%x\n"; 625 626 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 627 lun = inp->in_scclun; 628 } else { 629 lun = inp->in_lun; 630 } 631 632 if (inp->in_status != IN_MSG_RECEIVED) { 633 isp_prt(isp, ISP_LOGINFO, f2, "immediate notify status", 634 inp->in_status, lun, inp->in_iid, 635 inp->in_task_flags, inp->in_seqid); 636 } else { 637 tmd_msg_t msg; 638 639 MEMZERO(&msg, sizeof (msg)); 640 msg.nt_bus = bus; 641 msg.nt_iid = inp->in_iid; 642 msg.nt_tagval = inp->in_seqid; 643 msg.nt_lun = lun; 644 645 if (inp->in_task_flags & TASK_FLAGS_ABORT_TASK) { 646 isp_prt(isp, ISP_LOGINFO, f1, "ABORT TASK", 647 inp->in_iid, lun, inp->in_seqid); 648 msg.nt_msg[0] = MSG_ABORT_TAG; 649 } else if (inp->in_task_flags & TASK_FLAGS_CLEAR_TASK_SET) { 650 isp_prt(isp, ISP_LOGINFO, f1, "CLEAR TASK SET", 651 inp->in_iid, lun, inp->in_seqid); 652 msg.nt_msg[0] = MSG_CLEAR_QUEUE; 653 } else if (inp->in_task_flags & TASK_FLAGS_TARGET_RESET) { 654 isp_prt(isp, ISP_LOGINFO, f1, "TARGET RESET", 655 inp->in_iid, lun, inp->in_seqid); 656 msg.nt_msg[0] = MSG_BUS_DEV_RESET; 657 } else if (inp->in_task_flags & TASK_FLAGS_CLEAR_ACA) { 658 isp_prt(isp, ISP_LOGINFO, f1, "CLEAR ACA", 659 inp->in_iid, lun, inp->in_seqid); 660 /* ???? */ 661 msg.nt_msg[0] = MSG_REL_RECOVERY; 662 } else if (inp->in_task_flags & TASK_FLAGS_TERMINATE_TASK) { 663 isp_prt(isp, ISP_LOGINFO, f1, "TERMINATE TASK", 664 inp->in_iid, lun, inp->in_seqid); 665 msg.nt_msg[0] = MSG_TERM_IO_PROC; 666 } else { 667 isp_prt(isp, ISP_LOGWARN, f2, "task flag", 668 inp->in_status, lun, inp->in_iid, 669 inp->in_task_flags, inp->in_seqid); 670 } 671 if (msg.nt_msg[0]) { 672 (void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg); 673 } 674 } 675 } 676 677 static void 678 isp_notify_ack(struct ispsoftc *isp, void *arg) 679 { 680 char storage[QENTRY_LEN]; 681 u_int16_t nxti, optr; 682 void *outp; 683 684 if (isp_getrqentry(isp, &nxti, &optr, &outp)) { 685 isp_prt(isp, ISP_LOGWARN, 686 "Request Queue Overflow For isp_notify_ack"); 687 return; 688 } 689 690 MEMZERO(storage, QENTRY_LEN); 691 692 if (IS_FC(isp)) { 693 na_fcentry_t *na = (na_fcentry_t *) storage; 694 if (arg) { 695 in_fcentry_t *inp = arg; 696 MEMCPY(storage, arg, sizeof (isphdr_t)); 697 na->na_iid = inp->in_iid; 698 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 699 na->na_lun = inp->in_scclun; 700 } else { 701 na->na_lun = inp->in_lun; 702 } 703 na->na_task_flags = inp->in_task_flags; 704 na->na_seqid = inp->in_seqid; 705 na->na_flags = NAFC_RCOUNT; 706 na->na_status = inp->in_status; 707 if (inp->in_status == IN_RESET) { 708 na->na_flags |= NAFC_RST_CLRD; 709 } 710 } else { 711 na->na_flags = NAFC_RST_CLRD; 712 } 713 na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK; 714 na->na_header.rqs_entry_count = 1; 715 isp_put_notify_ack_fc(isp, na, (na_fcentry_t *)outp); 716 } else { 717 na_entry_t *na = (na_entry_t *) storage; 718 if (arg) { 719 in_entry_t *inp = arg; 720 MEMCPY(storage, arg, sizeof (isphdr_t)); 721 na->na_iid = inp->in_iid; 722 na->na_lun = inp->in_lun; 723 na->na_tgt = inp->in_tgt; 724 na->na_seqid = inp->in_seqid; 725 if (inp->in_status == IN_RESET) { 726 na->na_event = NA_RST_CLRD; 727 } 728 } else { 729 na->na_event = NA_RST_CLRD; 730 } 731 na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK; 732 na->na_header.rqs_entry_count = 1; 733 isp_put_notify_ack(isp, na, (na_entry_t *)outp); 734 } 735 ISP_TDQE(isp, "isp_notify_ack", (int) optr, storage); 736 ISP_ADD_REQUEST(isp, nxti); 737 } 738 739 static void 740 isp_handle_atio(struct ispsoftc *isp, at_entry_t *aep) 741 { 742 int lun; 743 lun = aep->at_lun; 744 /* 745 * The firmware status (except for the QLTM_SVALID bit) indicates 746 * why this ATIO was sent to us. 747 * 748 * If QLTM_SVALID is set, the firware has recommended Sense Data. 749 * 750 * If the DISCONNECTS DISABLED bit is set in the flags field, 751 * we're still connected on the SCSI bus - i.e. the initiator 752 * did not set DiscPriv in the identify message. We don't care 753 * about this so it's ignored. 754 */ 755 756 switch(aep->at_status & ~QLTM_SVALID) { 757 case AT_PATH_INVALID: 758 /* 759 * ATIO rejected by the firmware due to disabled lun. 760 */ 761 isp_prt(isp, ISP_LOGERR, 762 "rejected ATIO for disabled lun %d", lun); 763 break; 764 case AT_NOCAP: 765 /* 766 * Requested Capability not available 767 * We sent an ATIO that overflowed the firmware's 768 * command resource count. 769 */ 770 isp_prt(isp, ISP_LOGERR, 771 "rejected ATIO for lun %d because of command count" 772 " overflow", lun); 773 break; 774 775 case AT_BDR_MSG: 776 /* 777 * If we send an ATIO to the firmware to increment 778 * its command resource count, and the firmware is 779 * recovering from a Bus Device Reset, it returns 780 * the ATIO with this status. We set the command 781 * resource count in the Enable Lun entry and do 782 * not increment it. Therefore we should never get 783 * this status here. 784 */ 785 isp_prt(isp, ISP_LOGERR, atiocope, lun, 786 GET_BUS_VAL(aep->at_iid)); 787 break; 788 789 case AT_CDB: /* Got a CDB */ 790 case AT_PHASE_ERROR: /* Bus Phase Sequence Error */ 791 /* 792 * Punt to platform specific layer. 793 */ 794 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, aep); 795 break; 796 797 case AT_RESET: 798 /* 799 * A bus reset came along and blew away this command. Why 800 * they do this in addition the async event code stuff, 801 * I dunno. 802 * 803 * Ignore it because the async event will clear things 804 * up for us. 805 */ 806 isp_prt(isp, ISP_LOGWARN, atior, lun, 807 GET_IID_VAL(aep->at_iid), GET_BUS_VAL(aep->at_iid)); 808 break; 809 810 811 default: 812 isp_prt(isp, ISP_LOGERR, 813 "Unknown ATIO status 0x%x from initiator %d for lun %d", 814 aep->at_status, aep->at_iid, lun); 815 (void) isp_target_put_atio(isp, aep); 816 break; 817 } 818 } 819 820 static void 821 isp_handle_atio2(struct ispsoftc *isp, at2_entry_t *aep) 822 { 823 int lun; 824 825 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 826 lun = aep->at_scclun; 827 } else { 828 lun = aep->at_lun; 829 } 830 831 /* 832 * The firmware status (except for the QLTM_SVALID bit) indicates 833 * why this ATIO was sent to us. 834 * 835 * If QLTM_SVALID is set, the firware has recommended Sense Data. 836 * 837 * If the DISCONNECTS DISABLED bit is set in the flags field, 838 * we're still connected on the SCSI bus - i.e. the initiator 839 * did not set DiscPriv in the identify message. We don't care 840 * about this so it's ignored. 841 */ 842 843 switch(aep->at_status & ~QLTM_SVALID) { 844 case AT_PATH_INVALID: 845 /* 846 * ATIO rejected by the firmware due to disabled lun. 847 */ 848 isp_prt(isp, ISP_LOGERR, 849 "rejected ATIO2 for disabled lun %d", lun); 850 break; 851 case AT_NOCAP: 852 /* 853 * Requested Capability not available 854 * We sent an ATIO that overflowed the firmware's 855 * command resource count. 856 */ 857 isp_prt(isp, ISP_LOGERR, 858 "rejected ATIO2 for lun %d- command count overflow", lun); 859 break; 860 861 case AT_BDR_MSG: 862 /* 863 * If we send an ATIO to the firmware to increment 864 * its command resource count, and the firmware is 865 * recovering from a Bus Device Reset, it returns 866 * the ATIO with this status. We set the command 867 * resource count in the Enable Lun entry and no 868 * not increment it. Therefore we should never get 869 * this status here. 870 */ 871 isp_prt(isp, ISP_LOGERR, atiocope, lun, 0); 872 break; 873 874 case AT_CDB: /* Got a CDB */ 875 /* 876 * Punt to platform specific layer. 877 */ 878 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, aep); 879 break; 880 881 case AT_RESET: 882 /* 883 * A bus reset came along an blew away this command. Why 884 * they do this in addition the async event code stuff, 885 * I dunno. 886 * 887 * Ignore it because the async event will clear things 888 * up for us. 889 */ 890 isp_prt(isp, ISP_LOGERR, atior, lun, aep->at_iid, 0); 891 break; 892 893 894 default: 895 isp_prt(isp, ISP_LOGERR, 896 "Unknown ATIO2 status 0x%x from initiator %d for lun %d", 897 aep->at_status, aep->at_iid, lun); 898 (void) isp_target_put_atio(isp, aep); 899 break; 900 } 901 } 902 903 static void 904 isp_handle_ctio(struct ispsoftc *isp, ct_entry_t *ct) 905 { 906 void *xs; 907 int pl = ISP_LOGTDEBUG2; 908 char *fmsg = NULL; 909 910 if (ct->ct_syshandle) { 911 xs = isp_find_xs(isp, ct->ct_syshandle); 912 if (xs == NULL) 913 pl = ISP_LOGALL; 914 } else { 915 xs = NULL; 916 } 917 918 switch(ct->ct_status & ~QLTM_SVALID) { 919 case CT_OK: 920 /* 921 * There are generally 3 possibilities as to why we'd get 922 * this condition: 923 * We disconnected after receiving a CDB. 924 * We sent or received data. 925 * We sent status & command complete. 926 */ 927 928 if (ct->ct_flags & CT_SENDSTATUS) { 929 break; 930 } else if ((ct->ct_flags & CT_DATAMASK) == CT_NO_DATA) { 931 /* 932 * Nothing to do in this case. 933 */ 934 isp_prt(isp, pl, "CTIO- iid %d disconnected OK", 935 ct->ct_iid); 936 return; 937 } 938 break; 939 940 case CT_BDR_MSG: 941 /* 942 * Bus Device Reset message received or the SCSI Bus has 943 * been Reset; the firmware has gone to Bus Free. 944 * 945 * The firmware generates an async mailbox interupt to 946 * notify us of this and returns outstanding CTIOs with this 947 * status. These CTIOs are handled in that same way as 948 * CT_ABORTED ones, so just fall through here. 949 */ 950 fmsg = "Bus Device Reset"; 951 /*FALLTHROUGH*/ 952 case CT_RESET: 953 if (fmsg == NULL) 954 fmsg = "Bus Reset"; 955 /*FALLTHROUGH*/ 956 case CT_ABORTED: 957 /* 958 * When an Abort message is received the firmware goes to 959 * Bus Free and returns all outstanding CTIOs with the status 960 * set, then sends us an Immediate Notify entry. 961 */ 962 if (fmsg == NULL) 963 fmsg = "ABORT TAG message sent by Initiator"; 964 965 isp_prt(isp, ISP_LOGWARN, "CTIO destroyed by %s", fmsg); 966 break; 967 968 case CT_INVAL: 969 /* 970 * CTIO rejected by the firmware due to disabled lun. 971 * "Cannot Happen". 972 */ 973 isp_prt(isp, ISP_LOGERR, 974 "Firmware rejected CTIO for disabled lun %d", 975 ct->ct_lun); 976 break; 977 978 case CT_NOPATH: 979 /* 980 * CTIO rejected by the firmware due "no path for the 981 * nondisconnecting nexus specified". This means that 982 * we tried to access the bus while a non-disconnecting 983 * command is in process. 984 */ 985 isp_prt(isp, ISP_LOGERR, 986 "Firmware rejected CTIO for bad nexus %d/%d/%d", 987 ct->ct_iid, ct->ct_tgt, ct->ct_lun); 988 break; 989 990 case CT_RSELTMO: 991 fmsg = "Reselection"; 992 /*FALLTHROUGH*/ 993 case CT_TIMEOUT: 994 if (fmsg == NULL) 995 fmsg = "Command"; 996 isp_prt(isp, ISP_LOGERR, "Firmware timed out on %s", fmsg); 997 break; 998 999 case CT_PANIC: 1000 if (fmsg == NULL) 1001 fmsg = "Unrecoverable Error"; 1002 /*FALLTHROUGH*/ 1003 case CT_ERR: 1004 if (fmsg == NULL) 1005 fmsg = "Completed with Error"; 1006 /*FALLTHROUGH*/ 1007 case CT_PHASE_ERROR: 1008 if (fmsg == NULL) 1009 fmsg = "Phase Sequence Error"; 1010 /*FALLTHROUGH*/ 1011 case CT_TERMINATED: 1012 if (fmsg == NULL) 1013 fmsg = "terminated by TERMINATE TRANSFER"; 1014 /*FALLTHROUGH*/ 1015 case CT_NOACK: 1016 if (fmsg == NULL) 1017 fmsg = "unacknowledged Immediate Notify pending"; 1018 isp_prt(isp, ISP_LOGERR, "CTIO returned by f/w- %s", fmsg); 1019 break; 1020 default: 1021 isp_prt(isp, ISP_LOGERR, "Unknown CTIO status 0x%x", 1022 ct->ct_status & ~QLTM_SVALID); 1023 break; 1024 } 1025 1026 if (xs == NULL) { 1027 /* 1028 * There may be more than one CTIO for a data transfer, 1029 * or this may be a status CTIO we're not monitoring. 1030 * 1031 * The assumption is that they'll all be returned in the 1032 * order we got them. 1033 */ 1034 if (ct->ct_syshandle == 0) { 1035 if ((ct->ct_flags & CT_SENDSTATUS) == 0) { 1036 isp_prt(isp, pl, 1037 "intermediate CTIO completed ok"); 1038 } else { 1039 isp_prt(isp, pl, 1040 "unmonitored CTIO completed ok"); 1041 } 1042 } else { 1043 isp_prt(isp, pl, 1044 "NO xs for CTIO (handle 0x%x) status 0x%x", 1045 ct->ct_syshandle, ct->ct_status & ~QLTM_SVALID); 1046 } 1047 } else { 1048 /* 1049 * Final CTIO completed. Release DMA resources and 1050 * notify platform dependent layers. 1051 */ 1052 if ((ct->ct_flags & CT_DATAMASK) != CT_NO_DATA) { 1053 ISP_DMAFREE(isp, xs, ct->ct_syshandle); 1054 } 1055 isp_prt(isp, pl, "final CTIO complete"); 1056 /* 1057 * The platform layer will destroy the handle if appropriate. 1058 */ 1059 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, ct); 1060 } 1061 } 1062 1063 static void 1064 isp_handle_ctio2(struct ispsoftc *isp, ct2_entry_t *ct) 1065 { 1066 XS_T *xs; 1067 int pl = ISP_LOGTDEBUG2; 1068 char *fmsg = NULL; 1069 1070 if (ct->ct_syshandle) { 1071 xs = isp_find_xs(isp, ct->ct_syshandle); 1072 if (xs == NULL) 1073 pl = ISP_LOGALL; 1074 } else { 1075 xs = NULL; 1076 } 1077 1078 switch(ct->ct_status & ~QLTM_SVALID) { 1079 case CT_BUS_ERROR: 1080 isp_prt(isp, ISP_LOGERR, "PCI DMA Bus Error"); 1081 /* FALL Through */ 1082 case CT_DATA_OVER: 1083 case CT_DATA_UNDER: 1084 case CT_OK: 1085 /* 1086 * There are generally 2 possibilities as to why we'd get 1087 * this condition: 1088 * We sent or received data. 1089 * We sent status & command complete. 1090 */ 1091 1092 break; 1093 1094 case CT_BDR_MSG: 1095 /* 1096 * Target Reset function received. 1097 * 1098 * The firmware generates an async mailbox interupt to 1099 * notify us of this and returns outstanding CTIOs with this 1100 * status. These CTIOs are handled in that same way as 1101 * CT_ABORTED ones, so just fall through here. 1102 */ 1103 fmsg = "TARGET RESET Task Management Function Received"; 1104 /*FALLTHROUGH*/ 1105 case CT_RESET: 1106 if (fmsg == NULL) 1107 fmsg = "LIP Reset"; 1108 /*FALLTHROUGH*/ 1109 case CT_ABORTED: 1110 /* 1111 * When an Abort message is received the firmware goes to 1112 * Bus Free and returns all outstanding CTIOs with the status 1113 * set, then sends us an Immediate Notify entry. 1114 */ 1115 if (fmsg == NULL) 1116 fmsg = "ABORT Task Management Function Received"; 1117 1118 isp_prt(isp, ISP_LOGERR, "CTIO2 destroyed by %s", fmsg); 1119 break; 1120 1121 case CT_INVAL: 1122 /* 1123 * CTIO rejected by the firmware - invalid data direction. 1124 */ 1125 isp_prt(isp, ISP_LOGERR, "CTIO2 had wrong data directiond"); 1126 break; 1127 1128 case CT_RSELTMO: 1129 fmsg = "failure to reconnect to initiator"; 1130 /*FALLTHROUGH*/ 1131 case CT_TIMEOUT: 1132 if (fmsg == NULL) 1133 fmsg = "command"; 1134 isp_prt(isp, ISP_LOGERR, "Firmware timed out on %s", fmsg); 1135 break; 1136 1137 case CT_ERR: 1138 fmsg = "Completed with Error"; 1139 /*FALLTHROUGH*/ 1140 case CT_LOGOUT: 1141 if (fmsg == NULL) 1142 fmsg = "Port Logout"; 1143 /*FALLTHROUGH*/ 1144 case CT_PORTNOTAVAIL: 1145 if (fmsg == NULL) 1146 fmsg = "Port not available"; 1147 case CT_PORTCHANGED: 1148 if (fmsg == NULL) 1149 fmsg = "Port Changed"; 1150 case CT_NOACK: 1151 if (fmsg == NULL) 1152 fmsg = "unacknowledged Immediate Notify pending"; 1153 isp_prt(isp, ISP_LOGERR, "CTIO returned by f/w- %s", fmsg); 1154 break; 1155 1156 case CT_INVRXID: 1157 /* 1158 * CTIO rejected by the firmware because an invalid RX_ID. 1159 * Just print a message. 1160 */ 1161 isp_prt(isp, ISP_LOGERR, 1162 "CTIO2 completed with Invalid RX_ID 0x%x", ct->ct_rxid); 1163 break; 1164 1165 default: 1166 isp_prt(isp, ISP_LOGERR, "Unknown CTIO2 status 0x%x", 1167 ct->ct_status & ~QLTM_SVALID); 1168 break; 1169 } 1170 1171 if (xs == NULL) { 1172 /* 1173 * There may be more than one CTIO for a data transfer, 1174 * or this may be a status CTIO we're not monitoring. 1175 * 1176 * The assumption is that they'll all be returned in the 1177 * order we got them. 1178 */ 1179 if (ct->ct_syshandle == 0) { 1180 if ((ct->ct_flags & CT_SENDSTATUS) == 0) { 1181 isp_prt(isp, pl, 1182 "intermediate CTIO completed ok"); 1183 } else { 1184 isp_prt(isp, pl, 1185 "unmonitored CTIO completed ok"); 1186 } 1187 } else { 1188 isp_prt(isp, pl, 1189 "NO xs for CTIO (handle 0x%x) status 0x%x", 1190 ct->ct_syshandle, ct->ct_status & ~QLTM_SVALID); 1191 } 1192 } else { 1193 if ((ct->ct_flags & CT2_DATAMASK) != CT2_NO_DATA) { 1194 ISP_DMAFREE(isp, xs, ct->ct_syshandle); 1195 } 1196 if (ct->ct_flags & CT_SENDSTATUS) { 1197 /* 1198 * Sent status and command complete. 1199 * 1200 * We're now really done with this command, so we 1201 * punt to the platform dependent layers because 1202 * only there can we do the appropriate command 1203 * complete thread synchronization. 1204 */ 1205 isp_prt(isp, pl, "status CTIO complete"); 1206 } else { 1207 /* 1208 * Final CTIO completed. Release DMA resources and 1209 * notify platform dependent layers. 1210 */ 1211 isp_prt(isp, pl, "data CTIO complete"); 1212 } 1213 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, ct); 1214 /* 1215 * The platform layer will destroy the handle if appropriate. 1216 */ 1217 } 1218 } 1219 #endif 1220
Indexes created Fri Sep 26 08:10:20 GMT 2025