siop.c revision 1.25
1 /* $NetBSD: siop.c,v 1.25 1995/09/29 13:52:04 chopps Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Van Jacobson of Lawrence Berkeley Laboratory. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)siop.c 7.5 (Berkeley) 5/4/91 40 */ 41 42 /* 43 * AMIGA 53C710 scsi adaptor driver 44 */ 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/device.h> 49 #include <sys/disklabel.h> 50 #include <sys/dkstat.h> 51 #include <sys/buf.h> 52 #include <scsi/scsi_all.h> 53 #include <scsi/scsiconf.h> 54 #include <machine/cpu.h> 55 #include <amiga/amiga/custom.h> 56 #include <amiga/amiga/isr.h> 57 #include <amiga/dev/siopreg.h> 58 #include <amiga/dev/siopvar.h> 59 60 extern u_int kvtop(); 61 62 /* 63 * SCSI delays 64 * In u-seconds, primarily for state changes on the SPC. 65 */ 66 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 67 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 68 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 69 70 void siop_select __P((struct siop_softc *)); 71 void siopabort __P((struct siop_softc *, siop_regmap_p, char *)); 72 void sioperror __P((struct siop_softc *, siop_regmap_p, u_char)); 73 void siopstart __P((struct siop_softc *)); 74 void siopreset __P((struct siop_softc *)); 75 void siopsetdelay __P((int)); 76 void siop_scsidone __P((struct siop_acb *, int)); 77 void siop_sched __P((struct siop_softc *)); 78 int siop_poll __P((struct siop_softc *, struct siop_acb *)); 79 int siopintr __P((struct siop_softc *)); 80 81 /* 53C710 script */ 82 const 83 #include <amiga/dev/siop_script.out> 84 85 /* default to not inhibit sync negotiation on any drive */ 86 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 87 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 88 int siop_no_dma = 0; 89 90 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 91 92 int siop_cmd_wait = SCSI_CMD_WAIT; 93 int siop_data_wait = SCSI_DATA_WAIT; 94 int siop_init_wait = SCSI_INIT_WAIT; 95 96 #ifdef DEBUG 97 /* 98 * sync period transfer lookup - only valid for 66Mhz clock 99 */ 100 static struct { 101 unsigned char p; /* period from sync request message */ 102 unsigned char r; /* siop_period << 4 | sbcl */ 103 } sync_tab[] = { 104 { 60/4, 0<<4 | 1}, 105 { 76/4, 1<<4 | 1}, 106 { 92/4, 2<<4 | 1}, 107 { 92/4, 0<<4 | 2}, 108 {108/4, 3<<4 | 1}, 109 {116/4, 1<<4 | 2}, 110 {120/4, 4<<4 | 1}, 111 {120/4, 0<<4 | 3}, 112 {136/4, 5<<4 | 1}, 113 {140/4, 2<<4 | 2}, 114 {152/4, 6<<4 | 1}, 115 {152/4, 1<<4 | 3}, 116 {164/4, 3<<4 | 2}, 117 {168/4, 7<<4 | 1}, 118 {180/4, 2<<4 | 3}, 119 {184/4, 4<<4 | 2}, 120 {208/4, 5<<4 | 2}, 121 {212/4, 3<<4 | 3}, 122 {232/4, 6<<4 | 2}, 123 {240/4, 4<<4 | 3}, 124 {256/4, 7<<4 | 2}, 125 {272/4, 5<<4 | 3}, 126 {300/4, 6<<4 | 3}, 127 {332/4, 7<<4 | 3} 128 }; 129 #endif 130 131 #ifdef DEBUG 132 /* 133 * 0x01 - full debug 134 * 0x02 - DMA chaining 135 * 0x04 - siopintr 136 * 0x08 - phase mismatch 137 * 0x10 - <not used> 138 * 0x20 - panic on unhandled exceptions 139 * 0x100 - disconnect/reselect 140 */ 141 int siop_debug = 0; 142 int siopsync_debug = 0; 143 int siopdma_hits = 0; 144 int siopdma_misses = 0; 145 int siopchain_ints = 0; 146 int siopstarts = 0; 147 int siopints = 0; 148 int siopphmm = 0; 149 #define SIOP_TRACE_SIZE 128 150 #define SIOP_TRACE(a,b,c,d) \ 151 siop_trbuf[siop_trix] = (a); \ 152 siop_trbuf[siop_trix+1] = (b); \ 153 siop_trbuf[siop_trix+2] = (c); \ 154 siop_trbuf[siop_trix+3] = (d); \ 155 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 156 u_char siop_trbuf[SIOP_TRACE_SIZE]; 157 int siop_trix; 158 void siop_dump __P((struct siop_softc *)); 159 void siop_dump_trace __P((void)); 160 #else 161 #define SIOP_TRACE(a,b,c,d) 162 #endif 163 164 165 /* 166 * default minphys routine for siop based controllers 167 */ 168 void 169 siop_minphys(bp) 170 struct buf *bp; 171 { 172 173 /* 174 * No max transfer at this level. 175 */ 176 minphys(bp); 177 } 178 179 /* 180 * used by specific siop controller 181 * 182 */ 183 int 184 siop_scsicmd(xs) 185 struct scsi_xfer *xs; 186 { 187 struct siop_acb *acb; 188 struct siop_softc *sc; 189 struct scsi_link *slp; 190 int flags, s, i; 191 192 slp = xs->sc_link; 193 sc = slp->adapter_softc; 194 flags = xs->flags; 195 196 /* XXXX ?? */ 197 if (flags & SCSI_DATA_UIO) 198 panic("siop: scsi data uio requested"); 199 200 /* XXXX ?? */ 201 if (sc->sc_nexus && flags & SCSI_POLL) 202 /* panic("siop_scsicmd: busy");*/ 203 printf("siop_scsicmd: busy\n"); 204 205 s = splbio(); 206 acb = sc->free_list.tqh_first; 207 if (acb) { 208 TAILQ_REMOVE(&sc->free_list, acb, chain); 209 } 210 splx(s); 211 212 if (acb == NULL) { 213 xs->error = XS_DRIVER_STUFFUP; 214 return(TRY_AGAIN_LATER); 215 } 216 217 acb->flags = ACB_ACTIVE; 218 acb->xs = xs; 219 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 220 acb->clen = xs->cmdlen; 221 acb->daddr = xs->data; 222 acb->dleft = xs->datalen; 223 224 s = splbio(); 225 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 226 227 if (sc->sc_nexus == NULL) 228 siop_sched(sc); 229 230 splx(s); 231 232 if (flags & SCSI_POLL || siop_no_dma) 233 return(siop_poll(sc, acb)); 234 return(SUCCESSFULLY_QUEUED); 235 } 236 237 int 238 siop_poll(sc, acb) 239 struct siop_softc *sc; 240 struct siop_acb *acb; 241 { 242 siop_regmap_p rp = sc->sc_siopp; 243 struct scsi_xfer *xs = acb->xs; 244 int i; 245 int status; 246 u_char istat; 247 u_char dstat; 248 u_char sstat0; 249 int s; 250 int to; 251 252 s = splbio(); 253 to = xs->timeout / 1000; 254 if (sc->nexus_list.tqh_first) 255 printf("%s: siop_poll called with disconnected device\n", 256 sc->sc_dev.dv_xname); 257 for (;;) { 258 /* use cmd_wait values? */ 259 i = 50000; 260 spl0(); 261 while (((istat = rp->siop_istat) & 262 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 263 if (--i <= 0) { 264 #ifdef DEBUG 265 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %x (+%x) dcmd %x ds %x timeout %d\n", 266 xs->sc_link->target, acb->cmd.opcode, 267 rp->siop_sbcl, rp->siop_dsp, 268 rp->siop_dsp - sc->sc_scriptspa, 269 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 270 #endif 271 i = 50000; 272 --to; 273 if (to <= 0) { 274 siopreset(sc); 275 return(COMPLETE); 276 } 277 } 278 delay(10); 279 } 280 sstat0 = rp->siop_sstat0; 281 dstat = rp->siop_dstat; 282 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 283 if (acb != sc->sc_nexus) 284 printf("%s: siop_poll disconnected device completed\n", 285 sc->sc_dev.dv_xname); 286 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 287 sc->sc_flags &= ~SIOP_INTSOFF; 288 rp->siop_sien = sc->sc_sien; 289 rp->siop_dien = sc->sc_dien; 290 } 291 siop_scsidone(sc->sc_nexus, status); 292 } 293 if (xs->flags & ITSDONE) 294 break; 295 } 296 splx(s); 297 return (COMPLETE); 298 } 299 300 /* 301 * start next command that's ready 302 */ 303 void 304 siop_sched(sc) 305 struct siop_softc *sc; 306 { 307 struct scsi_link *slp; 308 struct siop_acb *acb; 309 int stat, i; 310 311 #ifdef DEBUG 312 if (sc->sc_nexus) { 313 printf("%s: siop_sched- nexus %x/%d ready %x/%d\n", 314 sc->sc_dev.dv_xname, sc->sc_nexus, 315 sc->sc_nexus->xs->sc_link->target, 316 sc->ready_list.tqh_first, 317 sc->ready_list.tqh_first->xs->sc_link->target); 318 return; 319 } 320 #endif 321 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 322 slp = acb->xs->sc_link; 323 i = slp->target; 324 if(!(sc->sc_tinfo[i].lubusy & (1 << slp->lun))) { 325 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 326 327 TAILQ_REMOVE(&sc->ready_list, acb, chain); 328 sc->sc_nexus = acb; 329 slp = acb->xs->sc_link; 330 ti = &sc->sc_tinfo[slp->target]; 331 ti->lubusy |= (1 << slp->lun); 332 break; 333 } 334 } 335 336 if (acb == NULL) { 337 #ifdef DEBUGXXX 338 printf("%s: siop_sched didn't find ready command\n", 339 sc->sc_dev.dv_xname); 340 #endif 341 return; 342 } 343 344 if (acb->xs->flags & SCSI_RESET) 345 siopreset(sc); 346 347 #if 0 348 acb->cmd.bytes[0] |= slp->lun << 5; /* XXXX */ 349 #endif 350 ++sc->sc_active; 351 siop_select(sc); 352 } 353 354 void 355 siop_scsidone(acb, stat) 356 struct siop_acb *acb; 357 int stat; 358 { 359 struct scsi_xfer *xs = acb->xs; 360 struct scsi_link *slp = xs->sc_link; 361 struct siop_softc *sc = slp->adapter_softc; 362 int s, dosched = 0; 363 364 #ifdef DIAGNOSTIC 365 if (acb == NULL || xs == NULL) 366 panic("siop_scsidone"); 367 #endif 368 if (slp->device_softc && 369 ((struct device *)(slp->device_softc))->dv_unit < dk_ndrive) 370 ++dk_xfer[((struct device *)(slp->device_softc))->dv_unit]; 371 /* 372 * is this right? 373 */ 374 xs->status = stat; 375 376 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 377 if (stat == SCSI_CHECK) { 378 struct scsi_sense *ss = (void *)&acb->cmd; 379 bzero(ss, sizeof(*ss)); 380 ss->opcode = REQUEST_SENSE; 381 ss->byte2 = slp->lun << 5; 382 ss->length = sizeof(struct scsi_sense_data); 383 acb->clen = sizeof(*ss); 384 acb->daddr = (char *)&xs->sense; 385 acb->dleft = sizeof(struct scsi_sense_data); 386 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 387 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 388 --sc->sc_active; 389 sc->sc_tinfo[slp->target].lubusy &= 390 ~(1 << slp->lun); 391 sc->sc_tinfo[slp->target].senses++; 392 if (sc->sc_nexus == acb) { 393 sc->sc_nexus = NULL; 394 siop_sched(sc); 395 } 396 SIOP_TRACE('d','s',0,0) 397 return; 398 } 399 } 400 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 401 xs->error = XS_SENSE; 402 } else { 403 xs->resid = 0; /* XXXX */ 404 } 405 #if whataboutthisone 406 case SCSI_BUSY: 407 xs->error = XS_BUSY; 408 break; 409 #endif 410 xs->flags |= ITSDONE; 411 412 /* 413 * Remove the ACB from whatever queue it's on. We have to do a bit of 414 * a hack to figure out which queue it's on. Note that it is *not* 415 * necessary to cdr down the ready queue, but we must cdr down the 416 * nexus queue and see if it's there, so we can mark the unit as no 417 * longer busy. This code is sickening, but it works. 418 */ 419 if (acb == sc->sc_nexus) { 420 sc->sc_nexus = NULL; 421 sc->sc_tinfo[slp->target].lubusy &= ~(1<<slp->lun); 422 if (sc->ready_list.tqh_first) 423 dosched = 1; /* start next command */ 424 --sc->sc_active; 425 SIOP_TRACE('d','a',stat,0) 426 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 427 TAILQ_REMOVE(&sc->ready_list, acb, chain); 428 SIOP_TRACE('d','r',stat,0) 429 } else { 430 register struct siop_acb *acb2; 431 for (acb2 = sc->nexus_list.tqh_first; acb2; 432 acb2 = acb2->chain.tqe_next) 433 if (acb2 == acb) { 434 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 435 sc->sc_tinfo[slp->target].lubusy 436 &= ~(1<<slp->lun); 437 --sc->sc_active; 438 break; 439 } 440 if (acb2) 441 ; 442 else if (acb->chain.tqe_next) { 443 TAILQ_REMOVE(&sc->ready_list, acb, chain); 444 --sc->sc_active; 445 } else { 446 printf("%s: can't find matching acb\n", 447 sc->sc_dev.dv_xname); 448 #ifdef DDB 449 /* Debugger(); */ 450 #endif 451 } 452 SIOP_TRACE('d','n',stat,0); 453 } 454 /* Put it on the free list. */ 455 acb->flags = ACB_FREE; 456 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 457 458 sc->sc_tinfo[slp->target].cmds++; 459 460 scsi_done(xs); 461 462 if (dosched && sc->sc_nexus == NULL) 463 siop_sched(sc); 464 } 465 466 void 467 siopabort(sc, rp, where) 468 register struct siop_softc *sc; 469 siop_regmap_p rp; 470 char *where; 471 { 472 int i; 473 474 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 475 sc->sc_dev.dv_xname, 476 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 477 478 if (sc->sc_active > 0) { 479 #ifdef TODO 480 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 481 WAIT_CIP (rp); 482 483 GET_SBIC_asr (rp, asr); 484 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 485 { 486 /* ok, get more drastic.. */ 487 488 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 489 delay(25); 490 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 491 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 492 493 return; 494 } 495 496 do 497 { 498 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 499 GET_SBIC_csr (rp, csr); 500 } 501 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 502 && (csr != SBIC_CSR_CMD_INVALID)); 503 #endif 504 505 /* lets just hope it worked.. */ 506 #ifdef fix_this 507 for (i = 0; i < 2; ++i) { 508 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 509 sc->sc_cur) { 510 printf ("siopabort: cleanup!\n"); 511 sc->sc_iob[i].sc_xs = NULL; 512 } 513 } 514 #endif /* fix_this */ 515 /* sc->sc_active = 0; */ 516 } 517 } 518 519 void 520 siopinitialize(sc) 521 struct siop_softc *sc; 522 { 523 /* 524 * Need to check that scripts is on a long word boundary 525 * and that DS is on a long word boundary. 526 * Also should verify that dev doesn't span non-contiguous 527 * physical pages. 528 */ 529 sc->sc_scriptspa = kvtop(scripts); 530 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 531 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 532 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 533 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 534 if (sc->sc_minsync < 25) 535 sc->sc_minsync = 25; 536 if (sc->sc_clock_freq <= 25) { 537 sc->sc_dcntl = 0x80; /* SCLK/1 */ 538 sc->sc_tcp[0] = sc->sc_tcp[1]; 539 } else if (sc->sc_clock_freq <= 37) { 540 sc->sc_dcntl = 0x40; /* SCLK/1.5 */ 541 sc->sc_tcp[0] = sc->sc_tcp[2]; 542 } else if (sc->sc_clock_freq <= 50) { 543 sc->sc_dcntl = 0x00; /* SCLK/2 */ 544 sc->sc_tcp[0] = sc->sc_tcp[3]; 545 } else { 546 sc->sc_dcntl = 0xc0; /* SCLK/3 */ 547 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 548 } 549 550 siopreset (sc); 551 } 552 553 void 554 siopreset(sc) 555 struct siop_softc *sc; 556 { 557 siop_regmap_p rp; 558 u_int i, s; 559 u_char dummy; 560 struct siop_acb *acb; 561 562 rp = sc->sc_siopp; 563 564 if (sc->sc_flags & SIOP_ALIVE) 565 siopabort(sc, rp, "reset"); 566 567 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 568 569 s = splbio(); 570 571 /* 572 * Reset the chip 573 * XXX - is this really needed? 574 */ 575 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 576 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 577 rp->siop_istat &= ~SIOP_ISTAT_RST; 578 /* 579 * Reset SCSI bus (do we really want this?) 580 */ 581 rp->siop_sien = 0; 582 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 583 delay(1); 584 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 585 586 /* 587 * Set up various chip parameters 588 */ 589 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 590 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 591 rp->siop_dcntl = sc->sc_dcntl; 592 rp->siop_dmode = 0x80; /* burst length = 4 */ 593 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 594 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 595 rp->siop_scid = 1 << sc->sc_link.adapter_target; 596 rp->siop_dwt = 0x00; 597 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 598 rp->siop_ctest7 |= sc->sc_ctest7; 599 600 /* will need to re-negotiate sync xfers */ 601 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 602 603 i = rp->siop_istat; 604 if (i & SIOP_ISTAT_SIP) 605 dummy = rp->siop_sstat0; 606 if (i & SIOP_ISTAT_DIP) 607 dummy = rp->siop_dstat; 608 609 splx (s); 610 611 delay (siop_reset_delay * 1000); 612 printf("siop id %d reset V%d\n", sc->sc_link.adapter_target, 613 rp->siop_ctest8 >> 4); 614 615 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 616 TAILQ_INIT(&sc->ready_list); 617 TAILQ_INIT(&sc->nexus_list); 618 TAILQ_INIT(&sc->free_list); 619 sc->sc_nexus = NULL; 620 acb = sc->sc_acb; 621 bzero(acb, sizeof(sc->sc_acb)); 622 for (i = 0; i < sizeof(sc->sc_acb) / sizeof(*acb); i++) { 623 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 624 acb++; 625 } 626 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 627 } else { 628 if (sc->sc_nexus != NULL) { 629 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 630 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 631 } 632 while (acb = sc->nexus_list.tqh_first) { 633 acb->xs->error = XS_DRIVER_STUFFUP; 634 siop_scsidone(acb, acb->stat[0]); 635 } 636 } 637 638 sc->sc_flags |= SIOP_ALIVE; 639 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 640 /* enable SCSI and DMA interrupts */ 641 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 642 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 643 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 644 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 645 rp->siop_sien = sc->sc_sien; 646 rp->siop_dien = sc->sc_dien; 647 } 648 649 /* 650 * Setup Data Storage for 53C710 and start SCRIPTS processing 651 */ 652 653 void 654 siop_start (sc, target, lun, cbuf, clen, buf, len) 655 struct siop_softc *sc; 656 int target; 657 int lun; 658 u_char *cbuf; 659 int clen; 660 u_char *buf; 661 int len; 662 { 663 siop_regmap_p rp = sc->sc_siopp; 664 int i; 665 int nchain; 666 int count, tcount; 667 char *addr, *dmaend; 668 struct siop_acb *acb = sc->sc_nexus; 669 670 #ifdef DEBUG 671 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 672 printf ("ACK! siop was busy: rp %x script %x dsa %x active %d\n", 673 rp, &scripts, &acb->ds, sc->sc_active); 674 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 675 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 676 rp->siop_sien, rp->siop_dien); 677 #ifdef DDB 678 /*Debugger();*/ 679 #endif 680 } 681 #endif 682 acb->msgout[0] = MSG_IDENTIFY | lun; 683 if (siop_allow_disc[target] & 2 || 684 (siop_allow_disc[target] && len == 0)) 685 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 686 acb->status = 0; 687 acb->stat[0] = -1; 688 acb->msg[0] = -1; 689 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 690 acb->ds.idlen = 1; 691 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 692 acb->ds.cmdlen = clen; 693 acb->ds.cmdbuf = (char *) kvtop(cbuf); 694 acb->ds.stslen = 1; 695 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 696 acb->ds.msglen = 1; 697 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 698 acb->msg[1] = -1; 699 acb->ds.msginlen = 1; 700 acb->ds.extmsglen = 1; 701 acb->ds.synmsglen = 3; 702 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 703 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 704 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 705 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 706 707 if (sc->sc_sync[target].state == SYNC_START) { 708 if (siop_inhibit_sync[target]) { 709 sc->sc_sync[target].state = SYNC_DONE; 710 sc->sc_sync[target].sbcl = 0; 711 sc->sc_sync[target].sxfer = 0; 712 #ifdef DEBUG 713 if (siopsync_debug) 714 printf ("Forcing target %d asynchronous\n", target); 715 #endif 716 } 717 else { 718 acb->msg[2] = -1; 719 acb->msgout[1] = MSG_EXT_MESSAGE; 720 acb->msgout[2] = 3; 721 acb->msgout[3] = MSG_SYNC_REQ; 722 #ifdef MAXTOR_SYNC_KLUDGE 723 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 724 #else 725 acb->msgout[4] = sc->sc_minsync; 726 #endif 727 acb->msgout[5] = SIOP_MAX_OFFSET; 728 acb->ds.idlen = 6; 729 sc->sc_sync[target].state = SYNC_SENT; 730 #ifdef DEBUG 731 if (siopsync_debug) 732 printf ("Sending sync request to target %d\n", target); 733 #endif 734 } 735 } 736 737 /* 738 * Build physical DMA addresses for scatter/gather I/O 739 */ 740 acb->iob_buf = buf; 741 acb->iob_len = len; 742 acb->iob_curbuf = acb->iob_curlen = 0; 743 nchain = 0; 744 count = len; 745 addr = buf; 746 dmaend = NULL; 747 while (count > 0) { 748 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 749 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 750 tcount = count; 751 acb->ds.chain[nchain].datalen = tcount; 752 addr += tcount; 753 count -= tcount; 754 if (acb->ds.chain[nchain].databuf == dmaend) { 755 dmaend += acb->ds.chain[nchain].datalen; 756 acb->ds.chain[nchain].datalen = 0; 757 acb->ds.chain[--nchain].datalen += tcount; 758 #ifdef DEBUG 759 ++siopdma_hits; 760 #endif 761 } 762 else { 763 dmaend = acb->ds.chain[nchain].databuf + 764 acb->ds.chain[nchain].datalen; 765 acb->ds.chain[nchain].datalen = tcount; 766 #ifdef DEBUG 767 if (nchain) /* Don't count miss on first one */ 768 ++siopdma_misses; 769 #endif 770 } 771 ++nchain; 772 } 773 #ifdef DEBUG 774 if (nchain != 1 && len != 0 && siop_debug & 3) { 775 printf ("DMA chaining set: %d\n", nchain); 776 for (i = 0; i < nchain; ++i) { 777 printf (" [%d] %8x %4x\n", i, acb->ds.chain[i].databuf, 778 acb->ds.chain[i].datalen); 779 } 780 } 781 #endif 782 783 /* push data cache for all data the 53c710 needs to access */ 784 dma_cachectl (sc, sizeof (struct siop_softc)); 785 dma_cachectl (cbuf, clen); 786 if (buf != NULL && len != 0) 787 dma_cachectl (buf, len); 788 #ifdef DEBUG 789 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 790 printf ("ACK! siop was busy at start: rp %x script %x dsa %x active %d\n", 791 rp, &scripts, &acb->ds, sc->sc_active); 792 #ifdef DDB 793 /*Debugger();*/ 794 #endif 795 } 796 #endif 797 if (sc->nexus_list.tqh_first == NULL) { 798 if (rp->siop_istat & SIOP_ISTAT_CON) 799 printf("%s: siop_select while connected?\n", 800 sc->sc_dev.dv_xname); 801 rp->siop_temp = 0; 802 rp->siop_sbcl = sc->sc_sync[target].sbcl; 803 rp->siop_dsa = kvtop(&acb->ds); 804 rp->siop_dsp = sc->sc_scriptspa; 805 SIOP_TRACE('s',1,0,0) 806 } else { 807 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 808 rp->siop_istat = SIOP_ISTAT_SIGP; 809 SIOP_TRACE('s',2,0,0); 810 } 811 else { 812 SIOP_TRACE('s',3,rp->siop_istat,0); 813 } 814 } 815 #ifdef DEBUG 816 ++siopstarts; 817 #endif 818 } 819 820 /* 821 * Process a DMA or SCSI interrupt from the 53C710 SIOP 822 */ 823 824 int 825 siop_checkintr(sc, istat, dstat, sstat0, status) 826 struct siop_softc *sc; 827 u_char istat; 828 u_char dstat; 829 u_char sstat0; 830 int *status; 831 { 832 siop_regmap_p rp = sc->sc_siopp; 833 struct siop_acb *acb = sc->sc_nexus; 834 int target; 835 int dfifo, dbc, sstat1; 836 837 dfifo = rp->siop_dfifo; 838 dbc = rp->siop_dbc0; 839 sstat1 = rp->siop_sstat1; 840 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 841 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 842 ; 843 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 844 #ifdef DEBUG 845 ++siopints; 846 #if 0 847 if (siop_debug & 0x100) { 848 DCIAS(&acb->stat[0]); /* XXX */ 849 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 850 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 851 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 852 acb->msg[0], acb->msg[1], acb->msg[2], 853 acb->msg[3], acb->msg[4], acb->msg[5]); 854 } 855 #endif 856 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 857 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 858 printf ("%s: dsp not within script dsp %x scripts %x:%x", 859 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 860 sc->sc_scriptspa + sizeof(scripts)); 861 printf(" istat %x dstat %x sstat0 %x\n", 862 istat, dstat, sstat0); 863 Debugger(); 864 } 865 #endif 866 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 867 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 868 /* Normal completion status, or check condition */ 869 #ifdef DEBUG 870 if (rp->siop_dsa != kvtop(&acb->ds)) { 871 printf ("siop: invalid dsa: %x %x\n", rp->siop_dsa, 872 kvtop(&acb->ds)); 873 panic("*** siop DSA invalid ***"); 874 } 875 #endif 876 target = acb->xs->sc_link->target; 877 if (sc->sc_sync[target].state == SYNC_SENT) { 878 #ifdef DEBUG 879 if (siopsync_debug) 880 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 881 acb->msg[0], acb->msg[1], acb->msg[2], 882 acb->msg[3], acb->msg[4], acb->msg[5]); 883 #endif 884 if (acb->msg[1] == 0xff) 885 printf ("%s: target %d ignored sync request\n", 886 sc->sc_dev.dv_xname, target); 887 else if (acb->msg[1] == MSG_REJECT) 888 printf ("%s: target %d rejected sync request\n", 889 sc->sc_dev.dv_xname, target); 890 sc->sc_sync[target].state = SYNC_DONE; 891 sc->sc_sync[target].sxfer = 0; 892 sc->sc_sync[target].sbcl = 0; 893 if (acb->msg[2] == 3 && 894 acb->msg[3] == MSG_SYNC_REQ && 895 acb->msg[5] != 0) { 896 #ifdef MAXTOR_KLUDGE 897 /* 898 * Kludge for my Maxtor XT8580S 899 * It accepts whatever we request, even 900 * though it won't work. So we ask for 901 * a short period than we can handle. If 902 * the device says it can do it, use 208ns. 903 * If the device says it can do less than 904 * 100ns, then we limit it to 100ns. 905 */ 906 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 907 #ifdef DEBUG 908 printf ("%d: target %d wanted %dns period\n", 909 sc->sc_dev.dv_xname, target, 910 acb->msg[4] * 4); 911 #endif 912 if (acb->msg[4] == 50 / 4) 913 acb->msg[4] = 208 / 4; 914 else 915 acb->msg[4] = 100 / 4; 916 } 917 #endif /* MAXTOR_KLUDGE */ 918 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 919 sc->sc_dev.dv_xname, target, 920 acb->msg[4] * 4, acb->msg[5]); 921 scsi_period_to_siop (sc, target); 922 } 923 } 924 dma_cachectl(&acb->stat[0], 1); 925 *status = acb->stat[0]; 926 #ifdef DEBUG 927 if (rp->siop_sbcl & SIOP_BSY) { 928 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 929 rp, &scripts, &acb->ds);*/ 930 #ifdef DDB 931 /*Debugger();*/ 932 #endif 933 } 934 if (acb->msg[0] != 0x00) 935 printf("%s: message was not COMMAND COMPLETE: %x\n", 936 sc->sc_dev.dv_xname, acb->msg[0]); 937 #endif 938 if (sc->nexus_list.tqh_first) 939 rp->siop_dcntl |= SIOP_DCNTL_STD; 940 return 1; 941 } 942 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 943 #ifdef DEBUG 944 ++siopphmm; 945 if (acb == NULL) 946 printf("%s: Phase mismatch with no active command?\n", 947 sc->sc_dev.dv_xname); 948 #endif 949 if (acb->iob_len) { 950 int adjust; 951 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 952 if (sstat1 & SIOP_SSTAT1_ORF) 953 ++adjust; 954 if (sstat1 & SIOP_SSTAT1_OLF) 955 ++adjust; 956 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 957 acb->iob_curlen += adjust; 958 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 959 #ifdef DEBUG 960 if (siop_debug & 0x100) { 961 int i; 962 printf ("Phase mismatch: curbuf %x curlen %x dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %x\n", 963 acb->iob_curbuf, acb->iob_curlen, dfifo, 964 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 965 if (acb->ds.chain[1].datalen) { 966 for (i = 0; acb->ds.chain[i].datalen; ++i) 967 printf("chain[%d] addr %x len %x\n", 968 i, acb->ds.chain[i].databuf, 969 acb->ds.chain[i].datalen); 970 } 971 } 972 #endif 973 dma_cachectl (acb, sizeof(*acb)); 974 } 975 #ifdef DEBUG 976 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 977 if (siop_debug & 9) 978 printf ("Phase mismatch: %x dsp +%x dcmd %x\n", 979 rp->siop_sbcl, 980 rp->siop_dsp - sc->sc_scriptspa, 981 *((long *)&rp->siop_dcmd)); 982 #endif 983 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 984 printf ("Phase mismatch: REQ not asserted! %02x dsp %x\n", 985 rp->siop_sbcl, rp->siop_dsp); 986 #ifdef DEBUG 987 Debugger(); 988 #endif 989 } 990 switch (rp->siop_sbcl & 7) { 991 case 0: /* data out */ 992 case 1: /* data in */ 993 case 2: /* status */ 994 case 3: /* command */ 995 case 6: /* message in */ 996 case 7: /* message out */ 997 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 998 break; 999 default: 1000 goto bad_phase; 1001 } 1002 return 0; 1003 } 1004 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1005 #ifdef DEBUG 1006 if (acb == NULL) 1007 printf("%s: Select timeout with no active command?\n", 1008 sc->sc_dev.dv_xname); 1009 if (rp->siop_sbcl & SIOP_BSY) { 1010 printf ("ACK! siop was busy at timeout: rp %x script %x dsa %x\n", 1011 rp, &scripts, &acb->ds); 1012 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1013 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1014 if (!(rp->siop_sbcl & SIOP_BSY)) { 1015 printf ("Yikes, it's not busy now!\n"); 1016 #if 0 1017 *status = -1; 1018 if (sc->nexus_list.tqh_first) 1019 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1020 return 1; 1021 #endif 1022 } 1023 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1024 return (0); 1025 #ifdef DDB 1026 Debugger(); 1027 #endif 1028 } 1029 #endif 1030 *status = -1; 1031 acb->xs->error = XS_SELTIMEOUT; 1032 if (sc->nexus_list.tqh_first) 1033 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1034 return 1; 1035 } 1036 if (acb) 1037 target = acb->xs->sc_link->target; 1038 else 1039 target = 7; 1040 if (sstat0 & SIOP_SSTAT0_UDC) { 1041 #ifdef DEBUG 1042 if (acb == NULL) 1043 printf("%s: Unexpected disconnect with no active command?\n", 1044 sc->sc_dev.dv_xname); 1045 printf ("%s: target %d disconnected unexpectedly\n", 1046 sc->sc_dev.dv_xname, target); 1047 #endif 1048 #if 0 1049 siopabort (sc, rp, "siopchkintr"); 1050 #endif 1051 *status = STS_BUSY; 1052 if (sc->nexus_list.tqh_first) 1053 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1054 return 1; 1055 } 1056 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1057 rp->siop_dsps == 0xff02)) { 1058 #ifdef DEBUG 1059 if (siop_debug & 0x100) 1060 printf ("%s: ID %02x disconnected TEMP %x (+%x) curbuf %x curlen %x buf %x len %x dfifo %x dbc %x sstat1 %x starts %d acb %x\n", 1061 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1062 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1063 acb->iob_curbuf, acb->iob_curlen, 1064 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1065 #endif 1066 if (acb == NULL) { 1067 printf("%s: Disconnect with no active command?\n", 1068 sc->sc_dev.dv_xname); 1069 return (0); 1070 } 1071 /* 1072 * XXXX need to update iob_curbuf/iob_curlen to reflect 1073 * current data transferred. If device disconnected in 1074 * the middle of a DMA block, they should already be set 1075 * by the phase change interrupt. If the disconnect 1076 * occurs on a DMA block boundary, we have to figure out 1077 * which DMA block it was. 1078 */ 1079 if (acb->iob_len && rp->siop_temp) { 1080 int n = rp->siop_temp - sc->sc_scriptspa; 1081 1082 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1083 printf("%s: iob_curbuf/len already set? n %x iob %x/%x chain[0] %x/%x\n", 1084 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1085 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1086 if (n < Ent_datain) 1087 n = (n - Ent_dataout) / 16; 1088 else 1089 n = (n - Ent_datain) / 16; 1090 if (n <= 0 && n > DMAMAXIO) 1091 printf("TEMP invalid %d\n", n); 1092 else { 1093 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1094 acb->iob_curlen = acb->ds.chain[n].datalen; 1095 } 1096 #ifdef DEBUG 1097 if (siop_debug & 0x100) { 1098 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1099 printf(" curbuf %x curlen %x\n", acb->iob_curbuf, 1100 acb->iob_curlen); 1101 } 1102 #endif 1103 } 1104 /* 1105 * If data transfer was interrupted by disconnect, iob_curbuf 1106 * and iob_curlen should reflect the point of interruption. 1107 * Adjust the DMA chain so that the data transfer begins 1108 * at the appropriate place upon reselection. 1109 * XXX This should only be done on save data pointer message? 1110 */ 1111 if (acb->iob_curlen) { 1112 int i, j; 1113 1114 #ifdef DEBUG 1115 if (siop_debug & 0x100) 1116 printf ("%s: adjusting DMA chain\n", 1117 sc->sc_dev.dv_xname); 1118 if (rp->siop_dsps == 0xff02) 1119 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1120 sc->sc_dev.dv_xname, 1 << target); 1121 #endif 1122 for (i = 0; i < DMAMAXIO; ++i) { 1123 if (acb->ds.chain[i].datalen == 0) 1124 break; 1125 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1126 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1127 acb->ds.chain[i].datalen)) 1128 break; 1129 } 1130 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) 1131 printf("couldn't find saved data pointer\n"); 1132 #ifdef DEBUG 1133 if (siop_debug & 0x100) 1134 printf(" chain[0]: %x/%x -> %x/%x\n", 1135 acb->ds.chain[0].databuf, 1136 acb->ds.chain[0].datalen, 1137 acb->iob_curbuf, 1138 acb->iob_curlen); 1139 #endif 1140 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1141 acb->ds.chain[0].datalen = acb->iob_curlen; 1142 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1143 #ifdef DEBUG 1144 if (siop_debug & 0x100) 1145 printf(" chain[%d]: %x/%x -> %x/%x\n", j, 1146 acb->ds.chain[j].databuf, 1147 acb->ds.chain[j].datalen, 1148 acb->ds.chain[i].databuf, 1149 acb->ds.chain[i].datalen); 1150 #endif 1151 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1152 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1153 } 1154 if (j < DMAMAXIO) 1155 acb->ds.chain[j].datalen = 0; 1156 DCIAS(kvtop(&acb->ds.chain)); 1157 } 1158 ++sc->sc_tinfo[target].dconns; 1159 /* 1160 * add nexus to waiting list 1161 * clear nexus 1162 * try to start another command for another target/lun 1163 */ 1164 acb->status = sc->sc_flags & SIOP_INTSOFF; 1165 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1166 sc->sc_nexus = NULL; /* no current device */ 1167 /* start script to wait for reselect */ 1168 if (sc->sc_nexus == NULL) 1169 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1170 /* XXXX start another command ? */ 1171 if (sc->ready_list.tqh_first) 1172 siop_sched(sc); 1173 return (0); 1174 } 1175 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1176 int reselid = rp->siop_scratch & 0x7f; 1177 int reselun = rp->siop_sfbr & 0x07; 1178 1179 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1180 #ifdef DEBUG 1181 if (siop_debug & 0x100) 1182 printf ("%s: target ID %02x reselected dsps %x\n", 1183 sc->sc_dev.dv_xname, reselid, 1184 rp->siop_dsps); 1185 if ((rp->siop_sfbr & 0x80) == 0) 1186 printf("%s: Reselect message in was not identify: %x\n", 1187 sc->sc_dev.dv_xname, rp->siop_sfbr); 1188 #endif 1189 if (sc->sc_nexus) { 1190 #ifdef DEBUG 1191 if (siop_debug & 0x100) 1192 printf ("%s: reselect ID %02x w/active\n", 1193 sc->sc_dev.dv_xname, reselid); 1194 #endif 1195 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1196 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->target].lubusy 1197 &= ~(1 << sc->sc_nexus->xs->sc_link->lun); 1198 --sc->sc_active; 1199 } 1200 /* 1201 * locate acb of reselecting device 1202 * set sc->sc_nexus to acb 1203 */ 1204 for (acb = sc->nexus_list.tqh_first; acb; 1205 acb = acb->chain.tqe_next) { 1206 if (reselid != (acb->ds.scsi_addr >> 16) || 1207 reselun != (acb->msgout[0] & 0x07)) 1208 continue; 1209 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1210 sc->sc_nexus = acb; 1211 sc->sc_flags |= acb->status; 1212 acb->status = 0; 1213 DCIAS(kvtop(&acb->stat[0])); 1214 rp->siop_dsa = kvtop(&acb->ds); 1215 rp->siop_sxfer = sc->sc_sync[acb->xs->sc_link->target].sxfer; 1216 rp->siop_sbcl = sc->sc_sync[acb->xs->sc_link->target].sbcl; 1217 break; 1218 } 1219 if (acb == NULL) { 1220 printf("%s: target ID %02x reselect nexus_list %x\n", 1221 sc->sc_dev.dv_xname, reselid, 1222 sc->nexus_list.tqh_first); 1223 panic("unable to find reselecting device"); 1224 } 1225 dma_cachectl (acb, sizeof(*acb)); 1226 rp->siop_temp = 0; 1227 rp->siop_dcntl |= SIOP_DCNTL_STD; 1228 return (0); 1229 } 1230 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1231 u_short ctest2 = rp->siop_ctest2; 1232 1233 /* reselect was interrupted (by Sig_P or select) */ 1234 #ifdef DEBUG 1235 if (siop_debug & 0x100 || 1236 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1237 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1238 sc->sc_dev.dv_xname, rp->siop_scntl1, 1239 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1240 #endif 1241 /* XXX assumes it was not select */ 1242 if (sc->sc_nexus == NULL) { 1243 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1244 sc->sc_dev.dv_xname); 1245 #if 0 1246 siop_dump(sc); 1247 #ifdef DDB 1248 Debugger(); 1249 #endif 1250 #endif 1251 rp->siop_dcntl |= SIOP_DCNTL_STD; 1252 return(0); 1253 } 1254 target = sc->sc_nexus->xs->sc_link->target; 1255 rp->siop_temp = 0; 1256 rp->siop_dsa = kvtop(&sc->sc_nexus->ds); 1257 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1258 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1259 rp->siop_dsp = sc->sc_scriptspa; 1260 return (0); 1261 } 1262 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1263 if (acb == NULL) 1264 printf("%s: Bad message-in with no active command?\n", 1265 sc->sc_dev.dv_xname); 1266 /* Unrecognized message in byte */ 1267 dma_cachectl (&acb->msg[1],1); 1268 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1269 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1270 /* what should be done here? */ 1271 DCIAS(kvtop(&acb->msg[1])); 1272 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1273 return (0); 1274 } 1275 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1276 /* Status phase wasn't followed by message in phase? */ 1277 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1278 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1279 if (rp->siop_sbcl == 0xa7) { 1280 /* It is now, just continue the script? */ 1281 rp->siop_dcntl |= SIOP_DCNTL_STD; 1282 return (0); 1283 } 1284 } 1285 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1286 dma_cachectl (&acb->stat[0], 1); 1287 dma_cachectl (&acb->msg[0], 1); 1288 printf ("SIOP interrupt: %x sts %x msg %x %x sbcl %x\n", 1289 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1290 rp->siop_sbcl); 1291 siopreset (sc); 1292 *status = -1; 1293 return 0; /* siopreset has cleaned up */ 1294 } 1295 if (sstat0 & SIOP_SSTAT0_SGE) 1296 printf ("SIOP: SCSI Gross Error\n"); 1297 if (sstat0 & SIOP_SSTAT0_PAR) 1298 printf ("SIOP: Parity Error\n"); 1299 if (dstat & SIOP_DSTAT_IID) 1300 printf ("SIOP: Invalid instruction detected\n"); 1301 bad_phase: 1302 /* 1303 * temporary panic for unhandled conditions 1304 * displays various things about the 53C710 status and registers 1305 * then panics. 1306 * XXXX need to clean this up to print out the info, reset, and continue 1307 */ 1308 printf ("siopchkintr: target %x ds %x\n", target, &acb->ds); 1309 printf ("scripts %x ds %x rp %x dsp %x dcmd %x\n", sc->sc_scriptspa, 1310 kvtop(&acb->ds), kvtop(rp), rp->siop_dsp, 1311 *((long *)&rp->siop_dcmd)); 1312 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", 1313 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1314 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1315 #ifdef DEBUG 1316 if (siop_debug & 0x20) 1317 panic("siopchkintr: **** temp ****"); 1318 #endif 1319 #ifdef DDB 1320 Debugger (); 1321 #endif 1322 siopreset (sc); /* hard reset */ 1323 *status = -1; 1324 return 0; /* siopreset cleaned up */ 1325 } 1326 1327 void 1328 siop_select(sc) 1329 struct siop_softc *sc; 1330 { 1331 siop_regmap_p rp; 1332 struct siop_acb *acb = sc->sc_nexus; 1333 1334 #ifdef DEBUG 1335 if (siop_debug & 1) 1336 printf ("%s: select ", sc->sc_dev.dv_xname); 1337 #endif 1338 1339 rp = sc->sc_siopp; 1340 if (acb->xs->flags & SCSI_POLL || siop_no_dma) { 1341 sc->sc_flags |= SIOP_INTSOFF; 1342 sc->sc_flags &= ~SIOP_INTDEFER; 1343 if ((rp->siop_istat & 0x08) == 0) { 1344 rp->siop_sien = 0; 1345 rp->siop_dien = 0; 1346 } 1347 #if 0 1348 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1349 sc->sc_flags &= ~SIOP_INTSOFF; 1350 if ((rp->siop_istat & 0x08) == 0) { 1351 rp->siop_sien = sc->sc_sien; 1352 rp->siop_dien = sc->sc_dien; 1353 } 1354 #endif 1355 } 1356 #ifdef DEBUG 1357 if (siop_debug & 1) 1358 printf ("siop_select: target %x cmd %02x ds %x\n", 1359 acb->xs->sc_link->target, acb->cmd.opcode, 1360 &sc->sc_nexus->ds); 1361 #endif 1362 1363 siop_start(sc, acb->xs->sc_link->target, acb->xs->sc_link->lun, 1364 &acb->cmd, acb->clen, acb->daddr, acb->dleft); 1365 1366 return; 1367 } 1368 1369 /* 1370 * 53C710 interrupt handler 1371 */ 1372 1373 int 1374 siopintr (sc) 1375 register struct siop_softc *sc; 1376 { 1377 siop_regmap_p rp; 1378 register u_char istat, dstat, sstat0; 1379 int status; 1380 int s = splbio(); 1381 1382 istat = sc->sc_istat; 1383 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1384 splx(s); 1385 return; 1386 } 1387 1388 /* Got a valid interrupt on this device */ 1389 rp = sc->sc_siopp; 1390 dstat = sc->sc_dstat; 1391 sstat0 = sc->sc_sstat0; 1392 if (dstat & SIOP_DSTAT_SIR) 1393 sc->sc_intcode = rp->siop_dsps; 1394 sc->sc_istat = 0; 1395 #ifdef DEBUG 1396 if (siop_debug & 1) 1397 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1398 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1399 if (!sc->sc_active) { 1400 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x status %x\n", 1401 sc->sc_dev.dv_xname, istat, dstat, sstat0, sc->sc_nexus->stat[0]); 1402 } 1403 #endif 1404 1405 #ifdef DEBUG 1406 if (siop_debug & 5) { 1407 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1408 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 1409 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1410 rp->siop_dsps, rp->siop_sbcl, 1411 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1412 } 1413 #endif 1414 if (sc->sc_flags & SIOP_INTDEFER) { 1415 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1416 rp->siop_sien = sc->sc_sien; 1417 rp->siop_dien = sc->sc_dien; 1418 } 1419 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1420 #if 1 1421 if (status == 0xff) 1422 printf ("siopintr: status == 0xff\n"); 1423 #endif 1424 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1425 #if 0 1426 if (rp->siop_sbcl & SIOP_BSY) { 1427 printf ("%s: SCSI bus busy at completion", 1428 sc->sc_dev.dv_xname); 1429 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1430 sc->sc_nexus->xs->sc_link->target, 1431 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1432 rp->siop_dsp - sc->sc_scriptspa); 1433 } 1434 #endif 1435 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 1436 } 1437 } 1438 splx(s); 1439 } 1440 1441 /* 1442 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1443 * not be correct for other 53c710 boards. 1444 * 1445 */ 1446 scsi_period_to_siop (sc, target) 1447 struct siop_softc *sc; 1448 { 1449 int period, offset, i, sxfer, sbcl; 1450 1451 period = sc->sc_nexus->msg[4]; 1452 offset = sc->sc_nexus->msg[5]; 1453 #ifdef DEBUG 1454 sxfer = 0; 1455 if (offset <= SIOP_MAX_OFFSET) 1456 sxfer = offset; 1457 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1458 if (period <= sync_tab[i].p) { 1459 sxfer |= sync_tab[i].r & 0x70; 1460 sbcl = sync_tab[i].r & 0x03; 1461 break; 1462 } 1463 } 1464 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1465 #endif 1466 for (sbcl = 1; sbcl < 4; ++sbcl) { 1467 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1468 if (sxfer >= 0 && sxfer <= 7) 1469 break; 1470 } 1471 if (sbcl > 3) { 1472 printf("siop sync: unable to compute sync params for period %dns\n", 1473 period * 4); 1474 /* 1475 * XXX need to pick a value we can do and renegotiate 1476 */ 1477 sxfer = sbcl = 0; 1478 } else { 1479 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1480 offset : SIOP_MAX_OFFSET); 1481 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1482 period * 4, sxfer, sbcl); 1483 printf(" actual period %dns\n", 1484 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1485 } 1486 sc->sc_sync[target].sxfer = sxfer; 1487 sc->sc_sync[target].sbcl = sbcl; 1488 #ifdef DEBUG 1489 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1490 #endif 1491 } 1492 1493 #ifdef DEBUG 1494 1495 #if SIOP_TRACE_SIZE 1496 void 1497 siop_dump_trace() 1498 { 1499 int i; 1500 1501 printf("siop trace: next index %d\n", siop_trix); 1502 i = siop_trix; 1503 do { 1504 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1505 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1506 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1507 } while (i != siop_trix); 1508 } 1509 #endif 1510 1511 void 1512 siop_dump_acb(acb) 1513 struct siop_acb *acb; 1514 { 1515 u_char *b = (u_char *) &acb->cmd; 1516 int i; 1517 1518 printf("acb@%x ", acb); 1519 if (acb->xs == NULL) { 1520 printf("<unused>\n"); 1521 return; 1522 } 1523 printf("(%d:%d) flags %2x clen %2d cmd ", acb->xs->sc_link->target, 1524 acb->xs->sc_link->lun, acb->flags, acb->clen); 1525 for (i = acb->clen; i; --i) 1526 printf(" %02x", *b++); 1527 printf("\n"); 1528 printf(" xs: %08x data %8x:%04x ", acb->xs, acb->xs->data, 1529 acb->xs->datalen); 1530 printf("va %8x:%04x ", acb->iob_buf, acb->iob_len); 1531 printf("cur %8x:%04x\n", acb->iob_curbuf, acb->iob_curlen); 1532 } 1533 1534 void 1535 siop_dump(sc) 1536 struct siop_softc *sc; 1537 { 1538 struct siop_acb *acb; 1539 siop_regmap_p rp = sc->sc_siopp; 1540 int s; 1541 int i; 1542 1543 s = splbio(); 1544 #if SIOP_TRACE_SIZE 1545 siop_dump_trace(); 1546 #endif 1547 printf("%s@%x regs %x istat %x\n", 1548 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1549 if (acb = sc->free_list.tqh_first) { 1550 printf("Free list:\n"); 1551 while (acb) { 1552 siop_dump_acb(acb); 1553 acb = acb->chain.tqe_next; 1554 } 1555 } 1556 if (acb = sc->ready_list.tqh_first) { 1557 printf("Ready list:\n"); 1558 while (acb) { 1559 siop_dump_acb(acb); 1560 acb = acb->chain.tqe_next; 1561 } 1562 } 1563 if (acb = sc->nexus_list.tqh_first) { 1564 printf("Nexus list:\n"); 1565 while (acb) { 1566 siop_dump_acb(acb); 1567 acb = acb->chain.tqe_next; 1568 } 1569 } 1570 if (sc->sc_nexus) { 1571 printf("Nexus:\n"); 1572 siop_dump_acb(sc->sc_nexus); 1573 } 1574 for (i = 0; i < 8; ++i) { 1575 if (sc->sc_tinfo[i].cmds > 2) { 1576 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1577 i, sc->sc_tinfo[i].cmds, 1578 sc->sc_tinfo[i].dconns, 1579 sc->sc_tinfo[i].senses, 1580 sc->sc_tinfo[i].lubusy); 1581 } 1582 } 1583 splx(s); 1584 } 1585 #endif 1586
Indexes created Sat Sep 27 22:09:54 GMT 2025