isp_target.c revision 1.20
1 /* $NetBSD: isp_target.c,v 1.20 2002/10/18 23:33:14 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 1.20 2002/10/18 23:33:14 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_status = CT_OK; 421 } else { 422 at_entry_t *aep = arg; 423 atun._atio.at_header.rqs_entry_type = RQSTYPE_ATIO; 424 atun._atio.at_header.rqs_entry_count = 1; 425 atun._atio.at_handle = aep->at_handle; 426 atun._atio.at_iid = aep->at_iid; 427 atun._atio.at_tgt = aep->at_tgt; 428 atun._atio.at_lun = aep->at_lun; 429 atun._atio.at_tag_type = aep->at_tag_type; 430 atun._atio.at_tag_val = aep->at_tag_val; 431 atun._atio.at_status = (aep->at_flags & AT_TQAE); 432 atun._atio.at_status |= CT_OK; 433 } 434 return (isp_target_put_entry(isp, &atun)); 435 } 436 437 /* 438 * Command completion- both for handling cases of no resources or 439 * no blackhole driver, or other cases where we have to, inline, 440 * finish the command sanely, or for normal command completion. 441 * 442 * The 'completion' code value has the scsi status byte in the low 8 bits. 443 * If status is a CHECK CONDITION and bit 8 is nonzero, then bits 12..15 have 444 * the sense key and bits 16..23 have the ASCQ and bits 24..31 have the ASC 445 * values. 446 * 447 * NB: the key, asc, ascq, cannot be used for parallel SCSI as it doesn't 448 * NB: inline SCSI sense reporting. As such, we lose this information. XXX. 449 * 450 * For both parallel && fibre channel, we use the feature that does 451 * an automatic resource autoreplenish so we don't have then later do 452 * put of an atio to replenish the f/w's resource count. 453 */ 454 455 int 456 isp_endcmd(struct ispsoftc *isp, void *arg, u_int32_t code, u_int16_t hdl) 457 { 458 int sts; 459 union { 460 ct_entry_t _ctio; 461 ct2_entry_t _ctio2; 462 } un; 463 464 MEMZERO(&un, sizeof un); 465 sts = code & 0xff; 466 467 if (IS_FC(isp)) { 468 at2_entry_t *aep = arg; 469 ct2_entry_t *cto = &un._ctio2; 470 471 cto->ct_header.rqs_entry_type = RQSTYPE_CTIO2; 472 cto->ct_header.rqs_entry_count = 1; 473 cto->ct_iid = aep->at_iid; 474 if ((FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) == 0) { 475 cto->ct_lun = aep->at_lun; 476 } 477 cto->ct_rxid = aep->at_rxid; 478 cto->rsp.m1.ct_scsi_status = sts & 0xff; 479 cto->ct_flags = CT2_SENDSTATUS | CT2_NO_DATA | CT2_FLAG_MODE1; 480 if (hdl == 0) { 481 cto->ct_flags |= CT2_CCINCR; 482 } 483 if (aep->at_datalen) { 484 cto->ct_resid = aep->at_datalen; 485 cto->rsp.m1.ct_scsi_status |= CT2_DATA_UNDER; 486 } 487 if ((sts & 0xff) == SCSI_CHECK && (sts & ECMD_SVALID)) { 488 cto->rsp.m1.ct_resp[0] = 0xf0; 489 cto->rsp.m1.ct_resp[2] = (code >> 12) & 0xf; 490 cto->rsp.m1.ct_resp[7] = 8; 491 cto->rsp.m1.ct_resp[12] = (code >> 24) & 0xff; 492 cto->rsp.m1.ct_resp[13] = (code >> 16) & 0xff; 493 cto->rsp.m1.ct_senselen = 16; 494 cto->rsp.m1.ct_scsi_status |= CT2_SNSLEN_VALID; 495 } 496 cto->ct_syshandle = hdl; 497 } else { 498 at_entry_t *aep = arg; 499 ct_entry_t *cto = &un._ctio; 500 501 cto->ct_header.rqs_entry_type = RQSTYPE_CTIO; 502 cto->ct_header.rqs_entry_count = 1; 503 cto->ct_fwhandle = aep->at_handle; 504 cto->ct_iid = aep->at_iid; 505 cto->ct_tgt = aep->at_tgt; 506 cto->ct_lun = aep->at_lun; 507 cto->ct_tag_type = aep->at_tag_type; 508 cto->ct_tag_val = aep->at_tag_val; 509 if (aep->at_flags & AT_TQAE) { 510 cto->ct_flags |= CT_TQAE; 511 } 512 cto->ct_flags = CT_SENDSTATUS | CT_NO_DATA; 513 if (hdl == 0) { 514 cto->ct_flags |= CT_CCINCR; 515 } 516 cto->ct_scsi_status = sts; 517 cto->ct_syshandle = hdl; 518 } 519 return (isp_target_put_entry(isp, &un)); 520 } 521 522 int 523 isp_target_async(struct ispsoftc *isp, int bus, int event) 524 { 525 tmd_event_t evt; 526 tmd_msg_t msg; 527 528 switch (event) { 529 /* 530 * These three we handle here to propagate an effective bus reset 531 * upstream, but these do not require any immediate notify actions 532 * so we return when done. 533 */ 534 case ASYNC_LIP_F8: 535 case ASYNC_LIP_OCCURRED: 536 case ASYNC_LOOP_UP: 537 case ASYNC_LOOP_DOWN: 538 case ASYNC_LOOP_RESET: 539 case ASYNC_PTPMODE: 540 /* 541 * These don't require any immediate notify actions. We used 542 * treat them like SCSI Bus Resets, but that was just plain 543 * wrong. Let the normal CTIO completion report what occurred. 544 */ 545 return (0); 546 547 case ASYNC_BUS_RESET: 548 case ASYNC_TIMEOUT_RESET: 549 if (IS_FC(isp)) { 550 return (0); /* we'll be getting an inotify instead */ 551 } 552 evt.ev_bus = bus; 553 evt.ev_event = event; 554 (void) isp_async(isp, ISPASYNC_TARGET_EVENT, &evt); 555 break; 556 case ASYNC_DEVICE_RESET: 557 /* 558 * Bus Device Reset resets a specific target, so 559 * we pass this as a synthesized message. 560 */ 561 MEMZERO(&msg, sizeof msg); 562 if (IS_FC(isp)) { 563 msg.nt_iid = FCPARAM(isp)->isp_loopid; 564 } else { 565 msg.nt_iid = SDPARAM(isp)->isp_initiator_id; 566 } 567 msg.nt_bus = bus; 568 msg.nt_msg[0] = MSG_BUS_DEV_RESET; 569 (void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg); 570 break; 571 default: 572 isp_prt(isp, ISP_LOGERR, 573 "isp_target_async: unknown event 0x%x", event); 574 break; 575 } 576 if (isp->isp_state == ISP_RUNSTATE) 577 isp_notify_ack(isp, NULL); 578 return(0); 579 } 580 581 582 /* 583 * Process a received message. 584 * The ISP firmware can handle most messages, there are only 585 * a few that we need to deal with: 586 * - abort: clean up the current command 587 * - abort tag and clear queue 588 */ 589 590 static void 591 isp_got_msg(struct ispsoftc *isp, int bus, in_entry_t *inp) 592 { 593 u_int8_t status = inp->in_status & ~QLTM_SVALID; 594 595 if (status == IN_IDE_RECEIVED || status == IN_MSG_RECEIVED) { 596 tmd_msg_t msg; 597 598 MEMZERO(&msg, sizeof (msg)); 599 msg.nt_bus = bus; 600 msg.nt_iid = inp->in_iid; 601 msg.nt_tgt = inp->in_tgt; 602 msg.nt_lun = inp->in_lun; 603 msg.nt_tagtype = inp->in_tag_type; 604 msg.nt_tagval = inp->in_tag_val; 605 MEMCPY(msg.nt_msg, inp->in_msg, IN_MSGLEN); 606 (void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg); 607 } else { 608 isp_prt(isp, ISP_LOGERR, 609 "unknown immediate notify status 0x%x", inp->in_status); 610 } 611 } 612 613 /* 614 * Synthesize a message from the task management flags in a FCP_CMND_IU. 615 */ 616 static void 617 isp_got_msg_fc(struct ispsoftc *isp, int bus, in_fcentry_t *inp) 618 { 619 int lun; 620 static const char f1[] = "%s from iid %d lun %d seq 0x%x"; 621 static const char f2[] = 622 "unknown %s 0x%x lun %d iid %d task flags 0x%x seq 0x%x\n"; 623 624 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 625 lun = inp->in_scclun; 626 } else { 627 lun = inp->in_lun; 628 } 629 630 if (inp->in_status != IN_MSG_RECEIVED) { 631 isp_prt(isp, ISP_LOGINFO, f2, "immediate notify status", 632 inp->in_status, lun, inp->in_iid, 633 inp->in_task_flags, inp->in_seqid); 634 } else { 635 tmd_msg_t msg; 636 637 MEMZERO(&msg, sizeof (msg)); 638 msg.nt_bus = bus; 639 msg.nt_iid = inp->in_iid; 640 msg.nt_tagval = inp->in_seqid; 641 msg.nt_lun = lun; 642 643 if (inp->in_task_flags & TASK_FLAGS_ABORT_TASK) { 644 isp_prt(isp, ISP_LOGINFO, f1, "ABORT TASK", 645 inp->in_iid, lun, inp->in_seqid); 646 msg.nt_msg[0] = MSG_ABORT_TAG; 647 } else if (inp->in_task_flags & TASK_FLAGS_CLEAR_TASK_SET) { 648 isp_prt(isp, ISP_LOGINFO, f1, "CLEAR TASK SET", 649 inp->in_iid, lun, inp->in_seqid); 650 msg.nt_msg[0] = MSG_CLEAR_QUEUE; 651 } else if (inp->in_task_flags & TASK_FLAGS_TARGET_RESET) { 652 isp_prt(isp, ISP_LOGINFO, f1, "TARGET RESET", 653 inp->in_iid, lun, inp->in_seqid); 654 msg.nt_msg[0] = MSG_BUS_DEV_RESET; 655 } else if (inp->in_task_flags & TASK_FLAGS_CLEAR_ACA) { 656 isp_prt(isp, ISP_LOGINFO, f1, "CLEAR ACA", 657 inp->in_iid, lun, inp->in_seqid); 658 /* ???? */ 659 msg.nt_msg[0] = MSG_REL_RECOVERY; 660 } else if (inp->in_task_flags & TASK_FLAGS_TERMINATE_TASK) { 661 isp_prt(isp, ISP_LOGINFO, f1, "TERMINATE TASK", 662 inp->in_iid, lun, inp->in_seqid); 663 msg.nt_msg[0] = MSG_TERM_IO_PROC; 664 } else { 665 isp_prt(isp, ISP_LOGWARN, f2, "task flag", 666 inp->in_status, lun, inp->in_iid, 667 inp->in_task_flags, inp->in_seqid); 668 } 669 if (msg.nt_msg[0]) { 670 (void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg); 671 } 672 } 673 } 674 675 static void 676 isp_notify_ack(struct ispsoftc *isp, void *arg) 677 { 678 char storage[QENTRY_LEN]; 679 u_int16_t nxti, optr; 680 void *outp; 681 682 if (isp_getrqentry(isp, &nxti, &optr, &outp)) { 683 isp_prt(isp, ISP_LOGWARN, 684 "Request Queue Overflow For isp_notify_ack"); 685 return; 686 } 687 688 MEMZERO(storage, QENTRY_LEN); 689 690 if (IS_FC(isp)) { 691 na_fcentry_t *na = (na_fcentry_t *) storage; 692 if (arg) { 693 in_fcentry_t *inp = arg; 694 MEMCPY(storage, arg, sizeof (isphdr_t)); 695 na->na_iid = inp->in_iid; 696 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 697 na->na_lun = inp->in_scclun; 698 } else { 699 na->na_lun = inp->in_lun; 700 } 701 na->na_task_flags = inp->in_task_flags; 702 na->na_seqid = inp->in_seqid; 703 na->na_flags = NAFC_RCOUNT; 704 na->na_status = inp->in_status; 705 if (inp->in_status == IN_RESET) { 706 na->na_flags |= NAFC_RST_CLRD; 707 } 708 } else { 709 na->na_flags = NAFC_RST_CLRD; 710 } 711 na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK; 712 na->na_header.rqs_entry_count = 1; 713 isp_put_notify_ack_fc(isp, na, (na_fcentry_t *)outp); 714 } else { 715 na_entry_t *na = (na_entry_t *) storage; 716 if (arg) { 717 in_entry_t *inp = arg; 718 MEMCPY(storage, arg, sizeof (isphdr_t)); 719 na->na_iid = inp->in_iid; 720 na->na_lun = inp->in_lun; 721 na->na_tgt = inp->in_tgt; 722 na->na_seqid = inp->in_seqid; 723 if (inp->in_status == IN_RESET) { 724 na->na_event = NA_RST_CLRD; 725 } 726 } else { 727 na->na_event = NA_RST_CLRD; 728 } 729 na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK; 730 na->na_header.rqs_entry_count = 1; 731 isp_put_notify_ack(isp, na, (na_entry_t *)outp); 732 } 733 ISP_TDQE(isp, "isp_notify_ack", (int) optr, storage); 734 ISP_ADD_REQUEST(isp, nxti); 735 } 736 737 static void 738 isp_handle_atio(struct ispsoftc *isp, at_entry_t *aep) 739 { 740 int lun; 741 lun = aep->at_lun; 742 /* 743 * The firmware status (except for the QLTM_SVALID bit) indicates 744 * why this ATIO was sent to us. 745 * 746 * If QLTM_SVALID is set, the firware has recommended Sense Data. 747 * 748 * If the DISCONNECTS DISABLED bit is set in the flags field, 749 * we're still connected on the SCSI bus - i.e. the initiator 750 * did not set DiscPriv in the identify message. We don't care 751 * about this so it's ignored. 752 */ 753 754 switch(aep->at_status & ~QLTM_SVALID) { 755 case AT_PATH_INVALID: 756 /* 757 * ATIO rejected by the firmware due to disabled lun. 758 */ 759 isp_prt(isp, ISP_LOGERR, 760 "rejected ATIO for disabled lun %d", lun); 761 break; 762 case AT_NOCAP: 763 /* 764 * Requested Capability not available 765 * We sent an ATIO that overflowed the firmware's 766 * command resource count. 767 */ 768 isp_prt(isp, ISP_LOGERR, 769 "rejected ATIO for lun %d because of command count" 770 " overflow", lun); 771 break; 772 773 case AT_BDR_MSG: 774 /* 775 * If we send an ATIO to the firmware to increment 776 * its command resource count, and the firmware is 777 * recovering from a Bus Device Reset, it returns 778 * the ATIO with this status. We set the command 779 * resource count in the Enable Lun entry and do 780 * not increment it. Therefore we should never get 781 * this status here. 782 */ 783 isp_prt(isp, ISP_LOGERR, atiocope, lun, 784 GET_BUS_VAL(aep->at_iid)); 785 break; 786 787 case AT_CDB: /* Got a CDB */ 788 case AT_PHASE_ERROR: /* Bus Phase Sequence Error */ 789 /* 790 * Punt to platform specific layer. 791 */ 792 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, aep); 793 break; 794 795 case AT_RESET: 796 /* 797 * A bus reset came along an blew away this command. Why 798 * they do this in addition the async event code stuff, 799 * I dunno. 800 * 801 * Ignore it because the async event will clear things 802 * up for us. 803 */ 804 isp_prt(isp, ISP_LOGWARN, atior, lun, 805 GET_IID_VAL(aep->at_iid), GET_BUS_VAL(aep->at_iid)); 806 break; 807 808 809 default: 810 isp_prt(isp, ISP_LOGERR, 811 "Unknown ATIO status 0x%x from initiator %d for lun %d", 812 aep->at_status, aep->at_iid, lun); 813 (void) isp_target_put_atio(isp, aep); 814 break; 815 } 816 } 817 818 static void 819 isp_handle_atio2(struct ispsoftc *isp, at2_entry_t *aep) 820 { 821 int lun; 822 823 if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) { 824 lun = aep->at_scclun; 825 } else { 826 lun = aep->at_lun; 827 } 828 829 /* 830 * The firmware status (except for the QLTM_SVALID bit) indicates 831 * why this ATIO was sent to us. 832 * 833 * If QLTM_SVALID is set, the firware has recommended Sense Data. 834 * 835 * If the DISCONNECTS DISABLED bit is set in the flags field, 836 * we're still connected on the SCSI bus - i.e. the initiator 837 * did not set DiscPriv in the identify message. We don't care 838 * about this so it's ignored. 839 */ 840 841 switch(aep->at_status & ~QLTM_SVALID) { 842 case AT_PATH_INVALID: 843 /* 844 * ATIO rejected by the firmware due to disabled lun. 845 */ 846 isp_prt(isp, ISP_LOGERR, 847 "rejected ATIO2 for disabled lun %d", lun); 848 break; 849 case AT_NOCAP: 850 /* 851 * Requested Capability not available 852 * We sent an ATIO that overflowed the firmware's 853 * command resource count. 854 */ 855 isp_prt(isp, ISP_LOGERR, 856 "rejected ATIO2 for lun %d- command count overflow", lun); 857 break; 858 859 case AT_BDR_MSG: 860 /* 861 * If we send an ATIO to the firmware to increment 862 * its command resource count, and the firmware is 863 * recovering from a Bus Device Reset, it returns 864 * the ATIO with this status. We set the command 865 * resource count in the Enable Lun entry and no 866 * not increment it. Therefore we should never get 867 * this status here. 868 */ 869 isp_prt(isp, ISP_LOGERR, atiocope, lun, 0); 870 break; 871 872 case AT_CDB: /* Got a CDB */ 873 /* 874 * Punt to platform specific layer. 875 */ 876 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, aep); 877 break; 878 879 case AT_RESET: 880 /* 881 * A bus reset came along an blew away this command. Why 882 * they do this in addition the async event code stuff, 883 * I dunno. 884 * 885 * Ignore it because the async event will clear things 886 * up for us. 887 */ 888 isp_prt(isp, ISP_LOGERR, atior, lun, aep->at_iid, 0); 889 break; 890 891 892 default: 893 isp_prt(isp, ISP_LOGERR, 894 "Unknown ATIO2 status 0x%x from initiator %d for lun %d", 895 aep->at_status, aep->at_iid, lun); 896 (void) isp_target_put_atio(isp, aep); 897 break; 898 } 899 } 900 901 static void 902 isp_handle_ctio(struct ispsoftc *isp, ct_entry_t *ct) 903 { 904 void *xs; 905 int pl = ISP_LOGTDEBUG2; 906 char *fmsg = NULL; 907 908 if (ct->ct_syshandle) { 909 xs = isp_find_xs(isp, ct->ct_syshandle); 910 if (xs == NULL) 911 pl = ISP_LOGALL; 912 } else { 913 xs = NULL; 914 } 915 916 switch(ct->ct_status & ~QLTM_SVALID) { 917 case CT_OK: 918 /* 919 * There are generally 3 possibilities as to why we'd get 920 * this condition: 921 * We disconnected after receiving a CDB. 922 * We sent or received data. 923 * We sent status & command complete. 924 */ 925 926 if (ct->ct_flags & CT_SENDSTATUS) { 927 break; 928 } else if ((ct->ct_flags & CT_DATAMASK) == CT_NO_DATA) { 929 /* 930 * Nothing to do in this case. 931 */ 932 isp_prt(isp, pl, "CTIO- iid %d disconnected OK", 933 ct->ct_iid); 934 return; 935 } 936 break; 937 938 case CT_BDR_MSG: 939 /* 940 * Bus Device Reset message received or the SCSI Bus has 941 * been Reset; the firmware has gone to Bus Free. 942 * 943 * The firmware generates an async mailbox interupt to 944 * notify us of this and returns outstanding CTIOs with this 945 * status. These CTIOs are handled in that same way as 946 * CT_ABORTED ones, so just fall through here. 947 */ 948 fmsg = "Bus Device Reset"; 949 /*FALLTHROUGH*/ 950 case CT_RESET: 951 if (fmsg == NULL) 952 fmsg = "Bus Reset"; 953 /*FALLTHROUGH*/ 954 case CT_ABORTED: 955 /* 956 * When an Abort message is received the firmware goes to 957 * Bus Free and returns all outstanding CTIOs with the status 958 * set, then sends us an Immediate Notify entry. 959 */ 960 if (fmsg == NULL) 961 fmsg = "ABORT TAG message sent by Initiator"; 962 963 isp_prt(isp, ISP_LOGWARN, "CTIO destroyed by %s", fmsg); 964 break; 965 966 case CT_INVAL: 967 /* 968 * CTIO rejected by the firmware due to disabled lun. 969 * "Cannot Happen". 970 */ 971 isp_prt(isp, ISP_LOGERR, 972 "Firmware rejected CTIO for disabled lun %d", 973 ct->ct_lun); 974 break; 975 976 case CT_NOPATH: 977 /* 978 * CTIO rejected by the firmware due "no path for the 979 * nondisconnecting nexus specified". This means that 980 * we tried to access the bus while a non-disconnecting 981 * command is in process. 982 */ 983 isp_prt(isp, ISP_LOGERR, 984 "Firmware rejected CTIO for bad nexus %d/%d/%d", 985 ct->ct_iid, ct->ct_tgt, ct->ct_lun); 986 break; 987 988 case CT_RSELTMO: 989 fmsg = "Reselection"; 990 /*FALLTHROUGH*/ 991 case CT_TIMEOUT: 992 if (fmsg == NULL) 993 fmsg = "Command"; 994 isp_prt(isp, ISP_LOGERR, "Firmware timed out on %s", fmsg); 995 break; 996 997 case CT_PANIC: 998 if (fmsg == NULL) 999 fmsg = "Unrecoverable Error"; 1000 /*FALLTHROUGH*/ 1001 case CT_ERR: 1002 if (fmsg == NULL) 1003 fmsg = "Completed with Error"; 1004 /*FALLTHROUGH*/ 1005 case CT_PHASE_ERROR: 1006 if (fmsg == NULL) 1007 fmsg = "Phase Sequence Error"; 1008 /*FALLTHROUGH*/ 1009 case CT_TERMINATED: 1010 if (fmsg == NULL) 1011 fmsg = "terminated by TERMINATE TRANSFER"; 1012 /*FALLTHROUGH*/ 1013 case CT_NOACK: 1014 if (fmsg == NULL) 1015 fmsg = "unacknowledged Immediate Notify pending"; 1016 isp_prt(isp, ISP_LOGERR, "CTIO returned by f/w- %s", fmsg); 1017 break; 1018 default: 1019 isp_prt(isp, ISP_LOGERR, "Unknown CTIO status 0x%x", 1020 ct->ct_status & ~QLTM_SVALID); 1021 break; 1022 } 1023 1024 if (xs == NULL) { 1025 /* 1026 * There may be more than one CTIO for a data transfer, 1027 * or this may be a status CTIO we're not monitoring. 1028 * 1029 * The assumption is that they'll all be returned in the 1030 * order we got them. 1031 */ 1032 if (ct->ct_syshandle == 0) { 1033 if ((ct->ct_flags & CT_SENDSTATUS) == 0) { 1034 isp_prt(isp, pl, 1035 "intermediate CTIO completed ok"); 1036 } else { 1037 isp_prt(isp, pl, 1038 "unmonitored CTIO completed ok"); 1039 } 1040 } else { 1041 isp_prt(isp, pl, 1042 "NO xs for CTIO (handle 0x%x) status 0x%x", 1043 ct->ct_syshandle, ct->ct_status & ~QLTM_SVALID); 1044 } 1045 } else { 1046 /* 1047 * Final CTIO completed. Release DMA resources and 1048 * notify platform dependent layers. 1049 */ 1050 if ((ct->ct_flags & CT_DATAMASK) != CT_NO_DATA) { 1051 ISP_DMAFREE(isp, xs, ct->ct_syshandle); 1052 } 1053 isp_prt(isp, pl, "final CTIO complete"); 1054 /* 1055 * The platform layer will destroy the handle if appropriate. 1056 */ 1057 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, ct); 1058 } 1059 } 1060 1061 static void 1062 isp_handle_ctio2(struct ispsoftc *isp, ct2_entry_t *ct) 1063 { 1064 XS_T *xs; 1065 int pl = ISP_LOGTDEBUG2; 1066 char *fmsg = NULL; 1067 1068 if (ct->ct_syshandle) { 1069 xs = isp_find_xs(isp, ct->ct_syshandle); 1070 if (xs == NULL) 1071 pl = ISP_LOGALL; 1072 } else { 1073 xs = NULL; 1074 } 1075 1076 switch(ct->ct_status & ~QLTM_SVALID) { 1077 case CT_BUS_ERROR: 1078 isp_prt(isp, ISP_LOGERR, "PCI DMA Bus Error"); 1079 /* FALL Through */ 1080 case CT_DATA_OVER: 1081 case CT_DATA_UNDER: 1082 case CT_OK: 1083 /* 1084 * There are generally 2 possibilities as to why we'd get 1085 * this condition: 1086 * We sent or received data. 1087 * We sent status & command complete. 1088 */ 1089 1090 break; 1091 1092 case CT_BDR_MSG: 1093 /* 1094 * Target Reset function received. 1095 * 1096 * The firmware generates an async mailbox interupt to 1097 * notify us of this and returns outstanding CTIOs with this 1098 * status. These CTIOs are handled in that same way as 1099 * CT_ABORTED ones, so just fall through here. 1100 */ 1101 fmsg = "TARGET RESET Task Management Function Received"; 1102 /*FALLTHROUGH*/ 1103 case CT_RESET: 1104 if (fmsg == NULL) 1105 fmsg = "LIP Reset"; 1106 /*FALLTHROUGH*/ 1107 case CT_ABORTED: 1108 /* 1109 * When an Abort message is received the firmware goes to 1110 * Bus Free and returns all outstanding CTIOs with the status 1111 * set, then sends us an Immediate Notify entry. 1112 */ 1113 if (fmsg == NULL) 1114 fmsg = "ABORT Task Management Function Received"; 1115 1116 isp_prt(isp, ISP_LOGERR, "CTIO2 destroyed by %s", fmsg); 1117 break; 1118 1119 case CT_INVAL: 1120 /* 1121 * CTIO rejected by the firmware - invalid data direction. 1122 */ 1123 isp_prt(isp, ISP_LOGERR, "CTIO2 had wrong data directiond"); 1124 break; 1125 1126 case CT_RSELTMO: 1127 fmsg = "failure to reconnect to initiator"; 1128 /*FALLTHROUGH*/ 1129 case CT_TIMEOUT: 1130 if (fmsg == NULL) 1131 fmsg = "command"; 1132 isp_prt(isp, ISP_LOGERR, "Firmware timed out on %s", fmsg); 1133 break; 1134 1135 case CT_ERR: 1136 fmsg = "Completed with Error"; 1137 /*FALLTHROUGH*/ 1138 case CT_LOGOUT: 1139 if (fmsg == NULL) 1140 fmsg = "Port Logout"; 1141 /*FALLTHROUGH*/ 1142 case CT_PORTNOTAVAIL: 1143 if (fmsg == NULL) 1144 fmsg = "Port not available"; 1145 case CT_PORTCHANGED: 1146 if (fmsg == NULL) 1147 fmsg = "Port Changed"; 1148 case CT_NOACK: 1149 if (fmsg == NULL) 1150 fmsg = "unacknowledged Immediate Notify pending"; 1151 isp_prt(isp, ISP_LOGERR, "CTIO returned by f/w- %s", fmsg); 1152 break; 1153 1154 case CT_INVRXID: 1155 /* 1156 * CTIO rejected by the firmware because an invalid RX_ID. 1157 * Just print a message. 1158 */ 1159 isp_prt(isp, ISP_LOGERR, 1160 "CTIO2 completed with Invalid RX_ID 0x%x", ct->ct_rxid); 1161 break; 1162 1163 default: 1164 isp_prt(isp, ISP_LOGERR, "Unknown CTIO2 status 0x%x", 1165 ct->ct_status & ~QLTM_SVALID); 1166 break; 1167 } 1168 1169 if (xs == NULL) { 1170 /* 1171 * There may be more than one CTIO for a data transfer, 1172 * or this may be a status CTIO we're not monitoring. 1173 * 1174 * The assumption is that they'll all be returned in the 1175 * order we got them. 1176 */ 1177 if (ct->ct_syshandle == 0) { 1178 if ((ct->ct_flags & CT_SENDSTATUS) == 0) { 1179 isp_prt(isp, pl, 1180 "intermediate CTIO completed ok"); 1181 } else { 1182 isp_prt(isp, pl, 1183 "unmonitored CTIO completed ok"); 1184 } 1185 } else { 1186 isp_prt(isp, pl, 1187 "NO xs for CTIO (handle 0x%x) status 0x%x", 1188 ct->ct_syshandle, ct->ct_status & ~QLTM_SVALID); 1189 } 1190 } else { 1191 if ((ct->ct_flags & CT2_DATAMASK) != CT2_NO_DATA) { 1192 ISP_DMAFREE(isp, xs, ct->ct_syshandle); 1193 } 1194 if (ct->ct_flags & CT_SENDSTATUS) { 1195 /* 1196 * Sent status and command complete. 1197 * 1198 * We're now really done with this command, so we 1199 * punt to the platform dependent layers because 1200 * only there can we do the appropriate command 1201 * complete thread synchronization. 1202 */ 1203 isp_prt(isp, pl, "status CTIO complete"); 1204 } else { 1205 /* 1206 * Final CTIO completed. Release DMA resources and 1207 * notify platform dependent layers. 1208 */ 1209 isp_prt(isp, pl, "data CTIO complete"); 1210 } 1211 (void) isp_async(isp, ISPASYNC_TARGET_ACTION, ct); 1212 /* 1213 * The platform layer will destroy the handle if appropriate. 1214 */ 1215 } 1216 } 1217 #endif 1218
Indexes created Thu Sep 25 08:09:54 GMT 2025