siop.c revision 1.29
1 /* $NetBSD: siop.c,v 1.29 1996/03/15 22:11:15 mhitch 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 <sys/malloc.h> 53 #include <scsi/scsi_all.h> 54 #include <scsi/scsiconf.h> 55 #include <machine/cpu.h> 56 #include <amiga/amiga/custom.h> 57 #include <amiga/amiga/isr.h> 58 #include <amiga/dev/siopreg.h> 59 #include <amiga/dev/siopvar.h> 60 61 extern u_int kvtop(); 62 63 /* 64 * SCSI delays 65 * In u-seconds, primarily for state changes on the SPC. 66 */ 67 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 68 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 69 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 70 71 void siop_select __P((struct siop_softc *)); 72 void siopabort __P((struct siop_softc *, siop_regmap_p, char *)); 73 void sioperror __P((struct siop_softc *, siop_regmap_p, u_char)); 74 void siopstart __P((struct siop_softc *)); 75 void siopreset __P((struct siop_softc *)); 76 void siopsetdelay __P((int)); 77 void siop_scsidone __P((struct siop_acb *, int)); 78 void siop_sched __P((struct siop_softc *)); 79 int siop_poll __P((struct siop_softc *, struct siop_acb *)); 80 int siopintr __P((struct siop_softc *)); 81 82 /* 53C710 script */ 83 const 84 #include <amiga/dev/siop_script.out> 85 86 /* default to not inhibit sync negotiation on any drive */ 87 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 88 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 89 int siop_no_dma = 0; 90 91 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 92 93 int siop_cmd_wait = SCSI_CMD_WAIT; 94 int siop_data_wait = SCSI_DATA_WAIT; 95 int siop_init_wait = SCSI_INIT_WAIT; 96 97 #ifdef DEBUG_SYNC 98 /* 99 * sync period transfer lookup - only valid for 66Mhz clock 100 */ 101 static struct { 102 unsigned char p; /* period from sync request message */ 103 unsigned char r; /* siop_period << 4 | sbcl */ 104 } sync_tab[] = { 105 { 60/4, 0<<4 | 1}, 106 { 76/4, 1<<4 | 1}, 107 { 92/4, 2<<4 | 1}, 108 { 92/4, 0<<4 | 2}, 109 {108/4, 3<<4 | 1}, 110 {116/4, 1<<4 | 2}, 111 {120/4, 4<<4 | 1}, 112 {120/4, 0<<4 | 3}, 113 {136/4, 5<<4 | 1}, 114 {140/4, 2<<4 | 2}, 115 {152/4, 6<<4 | 1}, 116 {152/4, 1<<4 | 3}, 117 {164/4, 3<<4 | 2}, 118 {168/4, 7<<4 | 1}, 119 {180/4, 2<<4 | 3}, 120 {184/4, 4<<4 | 2}, 121 {208/4, 5<<4 | 2}, 122 {212/4, 3<<4 | 3}, 123 {232/4, 6<<4 | 2}, 124 {240/4, 4<<4 | 3}, 125 {256/4, 7<<4 | 2}, 126 {272/4, 5<<4 | 3}, 127 {300/4, 6<<4 | 3}, 128 {332/4, 7<<4 | 3} 129 }; 130 #endif 131 132 #ifdef DEBUG 133 /* 134 * 0x01 - full debug 135 * 0x02 - DMA chaining 136 * 0x04 - siopintr 137 * 0x08 - phase mismatch 138 * 0x10 - <not used> 139 * 0x20 - panic on unhandled exceptions 140 * 0x100 - disconnect/reselect 141 */ 142 int siop_debug = 0; 143 int siopsync_debug = 0; 144 int siopdma_hits = 0; 145 int siopdma_misses = 0; 146 int siopchain_ints = 0; 147 int siopstarts = 0; 148 int siopints = 0; 149 int siopphmm = 0; 150 #define SIOP_TRACE_SIZE 128 151 #define SIOP_TRACE(a,b,c,d) \ 152 siop_trbuf[siop_trix] = (a); \ 153 siop_trbuf[siop_trix+1] = (b); \ 154 siop_trbuf[siop_trix+2] = (c); \ 155 siop_trbuf[siop_trix+3] = (d); \ 156 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 157 u_char siop_trbuf[SIOP_TRACE_SIZE]; 158 int siop_trix; 159 void siop_dump __P((struct siop_softc *)); 160 void siop_dump_trace __P((void)); 161 #else 162 #define SIOP_TRACE(a,b,c,d) 163 #endif 164 165 166 /* 167 * default minphys routine for siop based controllers 168 */ 169 void 170 siop_minphys(bp) 171 struct buf *bp; 172 { 173 174 /* 175 * No max transfer at this level. 176 */ 177 minphys(bp); 178 } 179 180 /* 181 * used by specific siop controller 182 * 183 */ 184 int 185 siop_scsicmd(xs) 186 struct scsi_xfer *xs; 187 { 188 struct siop_acb *acb; 189 struct siop_softc *sc; 190 struct scsi_link *slp; 191 int flags, s, i; 192 193 slp = xs->sc_link; 194 sc = slp->adapter_softc; 195 flags = xs->flags; 196 197 /* XXXX ?? */ 198 if (flags & SCSI_DATA_UIO) 199 panic("siop: scsi data uio requested"); 200 201 /* XXXX ?? */ 202 if (sc->sc_nexus && flags & SCSI_POLL) 203 /* panic("siop_scsicmd: busy");*/ 204 printf("siop_scsicmd: busy\n"); 205 206 s = splbio(); 207 acb = sc->free_list.tqh_first; 208 if (acb) { 209 TAILQ_REMOVE(&sc->free_list, acb, chain); 210 } 211 splx(s); 212 213 if (acb == NULL) { 214 xs->error = XS_DRIVER_STUFFUP; 215 return(TRY_AGAIN_LATER); 216 } 217 218 acb->flags = ACB_ACTIVE; 219 acb->xs = xs; 220 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 221 acb->clen = xs->cmdlen; 222 acb->daddr = xs->data; 223 acb->dleft = xs->datalen; 224 225 s = splbio(); 226 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 227 228 if (sc->sc_nexus == NULL) 229 siop_sched(sc); 230 231 splx(s); 232 233 if (flags & SCSI_POLL || siop_no_dma) 234 return(siop_poll(sc, acb)); 235 return(SUCCESSFULLY_QUEUED); 236 } 237 238 int 239 siop_poll(sc, acb) 240 struct siop_softc *sc; 241 struct siop_acb *acb; 242 { 243 siop_regmap_p rp = sc->sc_siopp; 244 struct scsi_xfer *xs = acb->xs; 245 int i; 246 int status; 247 u_char istat; 248 u_char dstat; 249 u_char sstat0; 250 int s; 251 int to; 252 253 s = splbio(); 254 to = xs->timeout / 1000; 255 if (sc->nexus_list.tqh_first) 256 printf("%s: siop_poll called with disconnected device\n", 257 sc->sc_dev.dv_xname); 258 for (;;) { 259 /* use cmd_wait values? */ 260 i = 50000; 261 spl0(); 262 while (((istat = rp->siop_istat) & 263 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 264 if (--i <= 0) { 265 #ifdef DEBUG 266 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %x (+%x) dcmd %x ds %x timeout %d\n", 267 xs->sc_link->target, acb->cmd.opcode, 268 rp->siop_sbcl, rp->siop_dsp, 269 rp->siop_dsp - sc->sc_scriptspa, 270 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 271 #endif 272 i = 50000; 273 --to; 274 if (to <= 0) { 275 siopreset(sc); 276 return(COMPLETE); 277 } 278 } 279 delay(10); 280 } 281 sstat0 = rp->siop_sstat0; 282 dstat = rp->siop_dstat; 283 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 284 if (acb != sc->sc_nexus) 285 printf("%s: siop_poll disconnected device completed\n", 286 sc->sc_dev.dv_xname); 287 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 288 sc->sc_flags &= ~SIOP_INTSOFF; 289 rp->siop_sien = sc->sc_sien; 290 rp->siop_dien = sc->sc_dien; 291 } 292 siop_scsidone(sc->sc_nexus, status); 293 } 294 if (xs->flags & ITSDONE) 295 break; 296 } 297 splx(s); 298 return (COMPLETE); 299 } 300 301 /* 302 * start next command that's ready 303 */ 304 void 305 siop_sched(sc) 306 struct siop_softc *sc; 307 { 308 struct scsi_link *slp; 309 struct siop_acb *acb; 310 int stat, i; 311 312 #ifdef DEBUG 313 if (sc->sc_nexus) { 314 printf("%s: siop_sched- nexus %x/%d ready %x/%d\n", 315 sc->sc_dev.dv_xname, sc->sc_nexus, 316 sc->sc_nexus->xs->sc_link->target, 317 sc->ready_list.tqh_first, 318 sc->ready_list.tqh_first->xs->sc_link->target); 319 return; 320 } 321 #endif 322 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 323 slp = acb->xs->sc_link; 324 i = slp->target; 325 if(!(sc->sc_tinfo[i].lubusy & (1 << slp->lun))) { 326 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 327 328 TAILQ_REMOVE(&sc->ready_list, acb, chain); 329 sc->sc_nexus = acb; 330 slp = acb->xs->sc_link; 331 ti = &sc->sc_tinfo[slp->target]; 332 ti->lubusy |= (1 << slp->lun); 333 break; 334 } 335 } 336 337 if (acb == NULL) { 338 #ifdef DEBUGXXX 339 printf("%s: siop_sched didn't find ready command\n", 340 sc->sc_dev.dv_xname); 341 #endif 342 return; 343 } 344 345 if (acb->xs->flags & SCSI_RESET) 346 siopreset(sc); 347 348 #if 0 349 acb->cmd.bytes[0] |= slp->lun << 5; /* XXXX */ 350 #endif 351 ++sc->sc_active; 352 siop_select(sc); 353 } 354 355 void 356 siop_scsidone(acb, stat) 357 struct siop_acb *acb; 358 int stat; 359 { 360 struct scsi_xfer *xs; 361 struct scsi_link *slp; 362 struct siop_softc *sc; 363 int s, dosched = 0; 364 365 #ifdef DIAGNOSTIC 366 if (acb == NULL || (xs = acb->xs) == NULL) { 367 /* panic("siop_scsidone"); */ 368 printf("siop_scsidone: sc_nexus NULL\n"); 369 Debugger(); 370 return; 371 } 372 #endif 373 slp = xs->sc_link; 374 sc = slp->adapter_softc; 375 /* 376 * XXX Support old-style instrumentation for now. 377 * IS THIS REALLY THE RIGHT PLACE FOR THIS? --thorpej 378 */ 379 if (slp->device_softc && 380 ((struct device *)(slp->device_softc))->dv_unit < dk_ndrive) 381 ++dk_xfer[((struct device *)(slp->device_softc))->dv_unit]; 382 /* 383 * is this right? 384 */ 385 xs->status = stat; 386 387 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 388 if (stat == SCSI_CHECK) { 389 struct scsi_sense *ss = (void *)&acb->cmd; 390 bzero(ss, sizeof(*ss)); 391 ss->opcode = REQUEST_SENSE; 392 ss->byte2 = slp->lun << 5; 393 ss->length = sizeof(struct scsi_sense_data); 394 acb->clen = sizeof(*ss); 395 acb->daddr = (char *)&xs->sense; 396 acb->dleft = sizeof(struct scsi_sense_data); 397 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 398 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 399 --sc->sc_active; 400 sc->sc_tinfo[slp->target].lubusy &= 401 ~(1 << slp->lun); 402 sc->sc_tinfo[slp->target].senses++; 403 if (sc->sc_nexus == acb) { 404 sc->sc_nexus = NULL; 405 siop_sched(sc); 406 } 407 SIOP_TRACE('d','s',0,0) 408 return; 409 } 410 } 411 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 412 xs->error = XS_SENSE; 413 } else { 414 xs->resid = 0; /* XXXX */ 415 } 416 #if whataboutthisone 417 case SCSI_BUSY: 418 xs->error = XS_BUSY; 419 break; 420 #endif 421 xs->flags |= ITSDONE; 422 423 /* 424 * Remove the ACB from whatever queue it's on. We have to do a bit of 425 * a hack to figure out which queue it's on. Note that it is *not* 426 * necessary to cdr down the ready queue, but we must cdr down the 427 * nexus queue and see if it's there, so we can mark the unit as no 428 * longer busy. This code is sickening, but it works. 429 */ 430 if (acb == sc->sc_nexus) { 431 sc->sc_nexus = NULL; 432 sc->sc_tinfo[slp->target].lubusy &= ~(1<<slp->lun); 433 if (sc->ready_list.tqh_first) 434 dosched = 1; /* start next command */ 435 --sc->sc_active; 436 SIOP_TRACE('d','a',stat,0) 437 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 438 TAILQ_REMOVE(&sc->ready_list, acb, chain); 439 SIOP_TRACE('d','r',stat,0) 440 } else { 441 register struct siop_acb *acb2; 442 for (acb2 = sc->nexus_list.tqh_first; acb2; 443 acb2 = acb2->chain.tqe_next) 444 if (acb2 == acb) { 445 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 446 sc->sc_tinfo[slp->target].lubusy 447 &= ~(1<<slp->lun); 448 --sc->sc_active; 449 break; 450 } 451 if (acb2) 452 ; 453 else if (acb->chain.tqe_next) { 454 TAILQ_REMOVE(&sc->ready_list, acb, chain); 455 --sc->sc_active; 456 } else { 457 printf("%s: can't find matching acb\n", 458 sc->sc_dev.dv_xname); 459 #ifdef DDB 460 /* Debugger(); */ 461 #endif 462 } 463 SIOP_TRACE('d','n',stat,0); 464 } 465 /* Put it on the free list. */ 466 acb->flags = ACB_FREE; 467 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 468 469 sc->sc_tinfo[slp->target].cmds++; 470 471 scsi_done(xs); 472 473 if (dosched && sc->sc_nexus == NULL) 474 siop_sched(sc); 475 } 476 477 void 478 siopabort(sc, rp, where) 479 register struct siop_softc *sc; 480 siop_regmap_p rp; 481 char *where; 482 { 483 int i; 484 485 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 486 sc->sc_dev.dv_xname, 487 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 488 489 if (sc->sc_active > 0) { 490 #ifdef TODO 491 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 492 WAIT_CIP (rp); 493 494 GET_SBIC_asr (rp, asr); 495 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 496 { 497 /* ok, get more drastic.. */ 498 499 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 500 delay(25); 501 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 502 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 503 504 return; 505 } 506 507 do 508 { 509 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 510 GET_SBIC_csr (rp, csr); 511 } 512 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 513 && (csr != SBIC_CSR_CMD_INVALID)); 514 #endif 515 516 /* lets just hope it worked.. */ 517 #ifdef fix_this 518 for (i = 0; i < 2; ++i) { 519 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 520 sc->sc_cur) { 521 printf ("siopabort: cleanup!\n"); 522 sc->sc_iob[i].sc_xs = NULL; 523 } 524 } 525 #endif /* fix_this */ 526 /* sc->sc_active = 0; */ 527 } 528 } 529 530 void 531 siopinitialize(sc) 532 struct siop_softc *sc; 533 { 534 int i; 535 u_int inhibit_sync; 536 extern u_long scsi_nosync; 537 extern int shift_nosync; 538 539 /* 540 * Need to check that scripts is on a long word boundary 541 * Also should verify that dev doesn't span non-contiguous 542 * physical pages. 543 */ 544 sc->sc_scriptspa = kvtop(scripts); 545 546 /* 547 * malloc sc_acb to ensure that DS is on a long word boundary. 548 */ 549 550 MALLOC(sc->sc_acb, struct siop_acb *, 551 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 552 if (sc->sc_acb == NULL) 553 panic("siopinitialize: ACB malloc failed!"); 554 555 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 556 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 557 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 558 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 559 if (sc->sc_minsync < 25) 560 sc->sc_minsync = 25; 561 if (sc->sc_clock_freq <= 25) { 562 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 563 sc->sc_tcp[0] = sc->sc_tcp[1]; 564 } else if (sc->sc_clock_freq <= 37) { 565 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 566 sc->sc_tcp[0] = sc->sc_tcp[2]; 567 } else if (sc->sc_clock_freq <= 50) { 568 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 569 sc->sc_tcp[0] = sc->sc_tcp[3]; 570 } else { 571 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 572 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 573 } 574 575 if (scsi_nosync) { 576 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 577 shift_nosync += 8; 578 #ifdef DEBUG 579 if (inhibit_sync) 580 printf("%s: Inhibiting synchronous transfer %02x\n", 581 sc->sc_dev.dv_xname, inhibit_sync); 582 #endif 583 for (i = 0; i < 8; ++i) 584 if (inhibit_sync & (1 << i)) 585 siop_inhibit_sync[i] = 1; 586 } 587 588 siopreset (sc); 589 } 590 591 void 592 siopreset(sc) 593 struct siop_softc *sc; 594 { 595 siop_regmap_p rp; 596 u_int i, s; 597 u_char dummy; 598 struct siop_acb *acb; 599 600 rp = sc->sc_siopp; 601 602 if (sc->sc_flags & SIOP_ALIVE) 603 siopabort(sc, rp, "reset"); 604 605 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 606 607 s = splbio(); 608 609 /* 610 * Reset the chip 611 * XXX - is this really needed? 612 */ 613 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 614 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 615 rp->siop_istat &= ~SIOP_ISTAT_RST; 616 /* 617 * Reset SCSI bus (do we really want this?) 618 */ 619 rp->siop_sien = 0; 620 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 621 delay(1); 622 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 623 624 /* 625 * Set up various chip parameters 626 */ 627 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 628 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 629 rp->siop_dcntl = sc->sc_dcntl; 630 rp->siop_dmode = 0x80; /* burst length = 4 */ 631 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 632 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 633 rp->siop_scid = 1 << sc->sc_link.adapter_target; 634 rp->siop_dwt = 0x00; 635 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 636 rp->siop_ctest7 |= sc->sc_ctest7; 637 638 /* will need to re-negotiate sync xfers */ 639 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 640 641 i = rp->siop_istat; 642 if (i & SIOP_ISTAT_SIP) 643 dummy = rp->siop_sstat0; 644 if (i & SIOP_ISTAT_DIP) 645 dummy = rp->siop_dstat; 646 647 splx (s); 648 649 delay (siop_reset_delay * 1000); 650 printf("siop id %d reset V%d\n", sc->sc_link.adapter_target, 651 rp->siop_ctest8 >> 4); 652 653 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 654 TAILQ_INIT(&sc->ready_list); 655 TAILQ_INIT(&sc->nexus_list); 656 TAILQ_INIT(&sc->free_list); 657 sc->sc_nexus = NULL; 658 acb = sc->sc_acb; 659 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 660 for (i = 0; i < SIOP_NACB; i++) { 661 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 662 acb++; 663 } 664 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 665 } else { 666 if (sc->sc_nexus != NULL) { 667 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 668 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 669 } 670 while (acb = sc->nexus_list.tqh_first) { 671 acb->xs->error = XS_DRIVER_STUFFUP; 672 siop_scsidone(acb, acb->stat[0]); 673 } 674 } 675 676 sc->sc_flags |= SIOP_ALIVE; 677 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 678 /* enable SCSI and DMA interrupts */ 679 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 680 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 681 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 682 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 683 rp->siop_sien = sc->sc_sien; 684 rp->siop_dien = sc->sc_dien; 685 } 686 687 /* 688 * Setup Data Storage for 53C710 and start SCRIPTS processing 689 */ 690 691 void 692 siop_start (sc, target, lun, cbuf, clen, buf, len) 693 struct siop_softc *sc; 694 int target; 695 int lun; 696 u_char *cbuf; 697 int clen; 698 u_char *buf; 699 int len; 700 { 701 siop_regmap_p rp = sc->sc_siopp; 702 int i; 703 int nchain; 704 int count, tcount; 705 char *addr, *dmaend; 706 struct siop_acb *acb = sc->sc_nexus; 707 708 #ifdef DEBUG 709 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 710 printf ("ACK! siop was busy: rp %x script %x dsa %x active %d\n", 711 rp, &scripts, &acb->ds, sc->sc_active); 712 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 713 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 714 rp->siop_sien, rp->siop_dien); 715 #ifdef DDB 716 /*Debugger();*/ 717 #endif 718 } 719 #endif 720 acb->msgout[0] = MSG_IDENTIFY | lun; 721 if (siop_allow_disc[target] & 2 || 722 (siop_allow_disc[target] && len == 0)) 723 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 724 acb->status = 0; 725 acb->stat[0] = -1; 726 acb->msg[0] = -1; 727 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 728 acb->ds.idlen = 1; 729 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 730 acb->ds.cmdlen = clen; 731 acb->ds.cmdbuf = (char *) kvtop(cbuf); 732 acb->ds.stslen = 1; 733 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 734 acb->ds.msglen = 1; 735 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 736 acb->msg[1] = -1; 737 acb->ds.msginlen = 1; 738 acb->ds.extmsglen = 1; 739 acb->ds.synmsglen = 3; 740 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 741 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 742 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 743 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 744 745 if (sc->sc_sync[target].state == SYNC_START) { 746 if (siop_inhibit_sync[target]) { 747 sc->sc_sync[target].state = SYNC_DONE; 748 sc->sc_sync[target].sbcl = 0; 749 sc->sc_sync[target].sxfer = 0; 750 #ifdef DEBUG 751 if (siopsync_debug) 752 printf ("Forcing target %d asynchronous\n", target); 753 #endif 754 } 755 else { 756 acb->msg[2] = -1; 757 acb->msgout[1] = MSG_EXT_MESSAGE; 758 acb->msgout[2] = 3; 759 acb->msgout[3] = MSG_SYNC_REQ; 760 #ifdef MAXTOR_SYNC_KLUDGE 761 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 762 #else 763 acb->msgout[4] = sc->sc_minsync; 764 #endif 765 acb->msgout[5] = SIOP_MAX_OFFSET; 766 acb->ds.idlen = 6; 767 sc->sc_sync[target].state = SYNC_SENT; 768 #ifdef DEBUG 769 if (siopsync_debug) 770 printf ("Sending sync request to target %d\n", target); 771 #endif 772 } 773 } 774 775 /* 776 * Build physical DMA addresses for scatter/gather I/O 777 */ 778 acb->iob_buf = buf; 779 acb->iob_len = len; 780 acb->iob_curbuf = acb->iob_curlen = 0; 781 nchain = 0; 782 count = len; 783 addr = buf; 784 dmaend = NULL; 785 while (count > 0) { 786 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 787 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 788 tcount = count; 789 acb->ds.chain[nchain].datalen = tcount; 790 addr += tcount; 791 count -= tcount; 792 if (acb->ds.chain[nchain].databuf == dmaend) { 793 dmaend += acb->ds.chain[nchain].datalen; 794 acb->ds.chain[nchain].datalen = 0; 795 acb->ds.chain[--nchain].datalen += tcount; 796 #ifdef DEBUG 797 ++siopdma_hits; 798 #endif 799 } 800 else { 801 dmaend = acb->ds.chain[nchain].databuf + 802 acb->ds.chain[nchain].datalen; 803 acb->ds.chain[nchain].datalen = tcount; 804 #ifdef DEBUG 805 if (nchain) /* Don't count miss on first one */ 806 ++siopdma_misses; 807 #endif 808 } 809 ++nchain; 810 } 811 #ifdef DEBUG 812 if (nchain != 1 && len != 0 && siop_debug & 3) { 813 printf ("DMA chaining set: %d\n", nchain); 814 for (i = 0; i < nchain; ++i) { 815 printf (" [%d] %8x %4x\n", i, acb->ds.chain[i].databuf, 816 acb->ds.chain[i].datalen); 817 } 818 } 819 #endif 820 821 /* push data cache for all data the 53c710 needs to access */ 822 dma_cachectl (acb, sizeof (struct siop_acb)); 823 dma_cachectl (cbuf, clen); 824 if (buf != NULL && len != 0) 825 dma_cachectl (buf, len); 826 #ifdef DEBUG 827 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 828 printf ("ACK! siop was busy at start: rp %x script %x dsa %x active %d\n", 829 rp, &scripts, &acb->ds, sc->sc_active); 830 #ifdef DDB 831 /*Debugger();*/ 832 #endif 833 } 834 #endif 835 if (sc->nexus_list.tqh_first == NULL) { 836 if (rp->siop_istat & SIOP_ISTAT_CON) 837 printf("%s: siop_select while connected?\n", 838 sc->sc_dev.dv_xname); 839 rp->siop_temp = 0; 840 rp->siop_sbcl = sc->sc_sync[target].sbcl; 841 rp->siop_dsa = kvtop(&acb->ds); 842 rp->siop_dsp = sc->sc_scriptspa; 843 SIOP_TRACE('s',1,0,0) 844 } else { 845 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 846 rp->siop_istat = SIOP_ISTAT_SIGP; 847 SIOP_TRACE('s',2,0,0); 848 } 849 else { 850 SIOP_TRACE('s',3,rp->siop_istat,0); 851 } 852 } 853 #ifdef DEBUG 854 ++siopstarts; 855 #endif 856 } 857 858 /* 859 * Process a DMA or SCSI interrupt from the 53C710 SIOP 860 */ 861 862 int 863 siop_checkintr(sc, istat, dstat, sstat0, status) 864 struct siop_softc *sc; 865 u_char istat; 866 u_char dstat; 867 u_char sstat0; 868 int *status; 869 { 870 siop_regmap_p rp = sc->sc_siopp; 871 struct siop_acb *acb = sc->sc_nexus; 872 int target; 873 int dfifo, dbc, sstat1; 874 875 dfifo = rp->siop_dfifo; 876 dbc = rp->siop_dbc0; 877 sstat1 = rp->siop_sstat1; 878 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 879 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 880 ; 881 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 882 #ifdef DEBUG 883 ++siopints; 884 #if 0 885 if (siop_debug & 0x100) { 886 DCIAS(&acb->stat[0]); /* XXX */ 887 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 888 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 889 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 890 acb->msg[0], acb->msg[1], acb->msg[2], 891 acb->msg[3], acb->msg[4], acb->msg[5]); 892 } 893 #endif 894 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 895 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 896 printf ("%s: dsp not within script dsp %x scripts %x:%x", 897 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 898 sc->sc_scriptspa + sizeof(scripts)); 899 printf(" istat %x dstat %x sstat0 %x\n", 900 istat, dstat, sstat0); 901 Debugger(); 902 } 903 #endif 904 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 905 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 906 /* Normal completion status, or check condition */ 907 #ifdef DEBUG 908 if (rp->siop_dsa != kvtop(&acb->ds)) { 909 printf ("siop: invalid dsa: %x %x\n", rp->siop_dsa, 910 kvtop(&acb->ds)); 911 panic("*** siop DSA invalid ***"); 912 } 913 #endif 914 target = acb->xs->sc_link->target; 915 if (sc->sc_sync[target].state == SYNC_SENT) { 916 #ifdef DEBUG 917 if (siopsync_debug) 918 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 919 acb->msg[0], acb->msg[1], acb->msg[2], 920 acb->msg[3], acb->msg[4], acb->msg[5]); 921 #endif 922 if (acb->msg[1] == 0xff) 923 printf ("%s: target %d ignored sync request\n", 924 sc->sc_dev.dv_xname, target); 925 else if (acb->msg[1] == MSG_REJECT) 926 printf ("%s: target %d rejected sync request\n", 927 sc->sc_dev.dv_xname, target); 928 sc->sc_sync[target].state = SYNC_DONE; 929 sc->sc_sync[target].sxfer = 0; 930 sc->sc_sync[target].sbcl = 0; 931 if (acb->msg[2] == 3 && 932 acb->msg[3] == MSG_SYNC_REQ && 933 acb->msg[5] != 0) { 934 #ifdef MAXTOR_KLUDGE 935 /* 936 * Kludge for my Maxtor XT8580S 937 * It accepts whatever we request, even 938 * though it won't work. So we ask for 939 * a short period than we can handle. If 940 * the device says it can do it, use 208ns. 941 * If the device says it can do less than 942 * 100ns, then we limit it to 100ns. 943 */ 944 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 945 #ifdef DEBUG 946 printf ("%d: target %d wanted %dns period\n", 947 sc->sc_dev.dv_xname, target, 948 acb->msg[4] * 4); 949 #endif 950 if (acb->msg[4] == 50 / 4) 951 acb->msg[4] = 208 / 4; 952 else 953 acb->msg[4] = 100 / 4; 954 } 955 #endif /* MAXTOR_KLUDGE */ 956 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 957 sc->sc_dev.dv_xname, target, 958 acb->msg[4] * 4, acb->msg[5]); 959 scsi_period_to_siop (sc, target); 960 } 961 } 962 dma_cachectl(&acb->stat[0], 1); 963 *status = acb->stat[0]; 964 #ifdef DEBUG 965 if (rp->siop_sbcl & SIOP_BSY) { 966 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 967 rp, &scripts, &acb->ds);*/ 968 #ifdef DDB 969 /*Debugger();*/ 970 #endif 971 } 972 if (acb->msg[0] != 0x00) 973 printf("%s: message was not COMMAND COMPLETE: %x\n", 974 sc->sc_dev.dv_xname, acb->msg[0]); 975 #endif 976 if (sc->nexus_list.tqh_first) 977 rp->siop_dcntl |= SIOP_DCNTL_STD; 978 return 1; 979 } 980 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 981 #ifdef DEBUG 982 ++siopphmm; 983 if (acb == NULL) 984 printf("%s: Phase mismatch with no active command?\n", 985 sc->sc_dev.dv_xname); 986 #endif 987 if (acb->iob_len) { 988 int adjust; 989 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 990 if (sstat1 & SIOP_SSTAT1_ORF) 991 ++adjust; 992 if (sstat1 & SIOP_SSTAT1_OLF) 993 ++adjust; 994 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 995 acb->iob_curlen += adjust; 996 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 997 #ifdef DEBUG 998 if (siop_debug & 0x100) { 999 int i; 1000 printf ("Phase mismatch: curbuf %x curlen %x dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %x\n", 1001 acb->iob_curbuf, acb->iob_curlen, dfifo, 1002 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1003 if (acb->ds.chain[1].datalen) { 1004 for (i = 0; acb->ds.chain[i].datalen; ++i) 1005 printf("chain[%d] addr %x len %x\n", 1006 i, acb->ds.chain[i].databuf, 1007 acb->ds.chain[i].datalen); 1008 } 1009 } 1010 #endif 1011 dma_cachectl (acb, sizeof(*acb)); 1012 } 1013 #ifdef DEBUG 1014 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1015 if (siop_debug & 9) 1016 printf ("Phase mismatch: %x dsp +%x dcmd %x\n", 1017 rp->siop_sbcl, 1018 rp->siop_dsp - sc->sc_scriptspa, 1019 *((long *)&rp->siop_dcmd)); 1020 #endif 1021 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1022 printf ("Phase mismatch: REQ not asserted! %02x dsp %x\n", 1023 rp->siop_sbcl, rp->siop_dsp); 1024 #ifdef DEBUG 1025 Debugger(); 1026 #endif 1027 } 1028 switch (rp->siop_sbcl & 7) { 1029 case 0: /* data out */ 1030 case 1: /* data in */ 1031 case 2: /* status */ 1032 case 3: /* command */ 1033 case 6: /* message in */ 1034 case 7: /* message out */ 1035 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1036 break; 1037 default: 1038 goto bad_phase; 1039 } 1040 return 0; 1041 } 1042 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1043 #ifdef DEBUG 1044 if (acb == NULL) 1045 printf("%s: Select timeout with no active command?\n", 1046 sc->sc_dev.dv_xname); 1047 if (rp->siop_sbcl & SIOP_BSY) { 1048 printf ("ACK! siop was busy at timeout: rp %x script %x dsa %x\n", 1049 rp, &scripts, &acb->ds); 1050 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1051 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1052 if (!(rp->siop_sbcl & SIOP_BSY)) { 1053 printf ("Yikes, it's not busy now!\n"); 1054 #if 0 1055 *status = -1; 1056 if (sc->nexus_list.tqh_first) 1057 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1058 return 1; 1059 #endif 1060 } 1061 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1062 return (0); 1063 #ifdef DDB 1064 Debugger(); 1065 #endif 1066 } 1067 #endif 1068 *status = -1; 1069 acb->xs->error = XS_SELTIMEOUT; 1070 if (sc->nexus_list.tqh_first) 1071 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1072 return 1; 1073 } 1074 if (acb) 1075 target = acb->xs->sc_link->target; 1076 else 1077 target = 7; 1078 if (sstat0 & SIOP_SSTAT0_UDC) { 1079 #ifdef DEBUG 1080 if (acb == NULL) 1081 printf("%s: Unexpected disconnect with no active command?\n", 1082 sc->sc_dev.dv_xname); 1083 printf ("%s: target %d disconnected unexpectedly\n", 1084 sc->sc_dev.dv_xname, target); 1085 #endif 1086 #if 0 1087 siopabort (sc, rp, "siopchkintr"); 1088 #endif 1089 *status = STS_BUSY; 1090 if (sc->nexus_list.tqh_first) 1091 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1092 return (acb != NULL); 1093 } 1094 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1095 rp->siop_dsps == 0xff02)) { 1096 #ifdef DEBUG 1097 if (siop_debug & 0x100) 1098 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", 1099 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1100 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1101 acb->iob_curbuf, acb->iob_curlen, 1102 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1103 #endif 1104 if (acb == NULL) { 1105 printf("%s: Disconnect with no active command?\n", 1106 sc->sc_dev.dv_xname); 1107 return (0); 1108 } 1109 /* 1110 * XXXX need to update iob_curbuf/iob_curlen to reflect 1111 * current data transferred. If device disconnected in 1112 * the middle of a DMA block, they should already be set 1113 * by the phase change interrupt. If the disconnect 1114 * occurs on a DMA block boundary, we have to figure out 1115 * which DMA block it was. 1116 */ 1117 if (acb->iob_len && rp->siop_temp) { 1118 int n = rp->siop_temp - sc->sc_scriptspa; 1119 1120 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1121 printf("%s: iob_curbuf/len already set? n %x iob %x/%x chain[0] %x/%x\n", 1122 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1123 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1124 if (n < Ent_datain) 1125 n = (n - Ent_dataout) / 16; 1126 else 1127 n = (n - Ent_datain) / 16; 1128 if (n <= 0 && n > DMAMAXIO) 1129 printf("TEMP invalid %d\n", n); 1130 else { 1131 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1132 acb->iob_curlen = acb->ds.chain[n].datalen; 1133 } 1134 #ifdef DEBUG 1135 if (siop_debug & 0x100) { 1136 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1137 printf(" curbuf %x curlen %x\n", acb->iob_curbuf, 1138 acb->iob_curlen); 1139 } 1140 #endif 1141 } 1142 /* 1143 * If data transfer was interrupted by disconnect, iob_curbuf 1144 * and iob_curlen should reflect the point of interruption. 1145 * Adjust the DMA chain so that the data transfer begins 1146 * at the appropriate place upon reselection. 1147 * XXX This should only be done on save data pointer message? 1148 */ 1149 if (acb->iob_curlen) { 1150 int i, j; 1151 1152 #ifdef DEBUG 1153 if (siop_debug & 0x100) 1154 printf ("%s: adjusting DMA chain\n", 1155 sc->sc_dev.dv_xname); 1156 if (rp->siop_dsps == 0xff02) 1157 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1158 sc->sc_dev.dv_xname, 1 << target); 1159 #endif 1160 for (i = 0; i < DMAMAXIO; ++i) { 1161 if (acb->ds.chain[i].datalen == 0) 1162 break; 1163 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1164 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1165 acb->ds.chain[i].datalen)) 1166 break; 1167 } 1168 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1169 printf("couldn't find saved data pointer: "); 1170 printf("curbuf %x curlen %x i %d\n", 1171 acb->iob_curbuf, acb->iob_curlen, i); 1172 #ifdef DDB 1173 Debugger(); 1174 #endif 1175 } 1176 #ifdef DEBUG 1177 if (siop_debug & 0x100) 1178 printf(" chain[0]: %x/%x -> %x/%x\n", 1179 acb->ds.chain[0].databuf, 1180 acb->ds.chain[0].datalen, 1181 acb->iob_curbuf, 1182 acb->iob_curlen); 1183 #endif 1184 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1185 acb->ds.chain[0].datalen = acb->iob_curlen; 1186 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1187 #ifdef DEBUG 1188 if (siop_debug & 0x100) 1189 printf(" chain[%d]: %x/%x -> %x/%x\n", j, 1190 acb->ds.chain[j].databuf, 1191 acb->ds.chain[j].datalen, 1192 acb->ds.chain[i].databuf, 1193 acb->ds.chain[i].datalen); 1194 #endif 1195 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1196 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1197 } 1198 if (j < DMAMAXIO) 1199 acb->ds.chain[j].datalen = 0; 1200 DCIAS(kvtop(&acb->ds.chain)); 1201 } 1202 ++sc->sc_tinfo[target].dconns; 1203 /* 1204 * add nexus to waiting list 1205 * clear nexus 1206 * try to start another command for another target/lun 1207 */ 1208 acb->status = sc->sc_flags & SIOP_INTSOFF; 1209 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1210 sc->sc_nexus = NULL; /* no current device */ 1211 /* start script to wait for reselect */ 1212 if (sc->sc_nexus == NULL) 1213 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1214 /* XXXX start another command ? */ 1215 if (sc->ready_list.tqh_first) 1216 siop_sched(sc); 1217 return (0); 1218 } 1219 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1220 int reselid = rp->siop_scratch & 0x7f; 1221 int reselun = rp->siop_sfbr & 0x07; 1222 1223 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1224 #ifdef DEBUG 1225 if (siop_debug & 0x100) 1226 printf ("%s: target ID %02x reselected dsps %x\n", 1227 sc->sc_dev.dv_xname, reselid, 1228 rp->siop_dsps); 1229 if ((rp->siop_sfbr & 0x80) == 0) 1230 printf("%s: Reselect message in was not identify: %x\n", 1231 sc->sc_dev.dv_xname, rp->siop_sfbr); 1232 #endif 1233 if (sc->sc_nexus) { 1234 #ifdef DEBUG 1235 if (siop_debug & 0x100) 1236 printf ("%s: reselect ID %02x w/active\n", 1237 sc->sc_dev.dv_xname, reselid); 1238 #endif 1239 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1240 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->target].lubusy 1241 &= ~(1 << sc->sc_nexus->xs->sc_link->lun); 1242 --sc->sc_active; 1243 } 1244 /* 1245 * locate acb of reselecting device 1246 * set sc->sc_nexus to acb 1247 */ 1248 for (acb = sc->nexus_list.tqh_first; acb; 1249 acb = acb->chain.tqe_next) { 1250 if (reselid != (acb->ds.scsi_addr >> 16) || 1251 reselun != (acb->msgout[0] & 0x07)) 1252 continue; 1253 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1254 sc->sc_nexus = acb; 1255 sc->sc_flags |= acb->status; 1256 acb->status = 0; 1257 DCIAS(kvtop(&acb->stat[0])); 1258 rp->siop_dsa = kvtop(&acb->ds); 1259 rp->siop_sxfer = sc->sc_sync[acb->xs->sc_link->target].sxfer; 1260 rp->siop_sbcl = sc->sc_sync[acb->xs->sc_link->target].sbcl; 1261 break; 1262 } 1263 if (acb == NULL) { 1264 printf("%s: target ID %02x reselect nexus_list %x\n", 1265 sc->sc_dev.dv_xname, reselid, 1266 sc->nexus_list.tqh_first); 1267 panic("unable to find reselecting device"); 1268 } 1269 dma_cachectl (acb, sizeof(*acb)); 1270 rp->siop_temp = 0; 1271 rp->siop_dcntl |= SIOP_DCNTL_STD; 1272 return (0); 1273 } 1274 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1275 u_short ctest2 = rp->siop_ctest2; 1276 1277 /* reselect was interrupted (by Sig_P or select) */ 1278 #ifdef DEBUG 1279 if (siop_debug & 0x100 || 1280 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1281 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1282 sc->sc_dev.dv_xname, rp->siop_scntl1, 1283 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1284 #endif 1285 /* XXX assumes it was not select */ 1286 if (sc->sc_nexus == NULL) { 1287 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1288 sc->sc_dev.dv_xname); 1289 #if 0 1290 siop_dump(sc); 1291 #ifdef DDB 1292 Debugger(); 1293 #endif 1294 #endif 1295 rp->siop_dcntl |= SIOP_DCNTL_STD; 1296 return(0); 1297 } 1298 target = sc->sc_nexus->xs->sc_link->target; 1299 rp->siop_temp = 0; 1300 rp->siop_dsa = kvtop(&sc->sc_nexus->ds); 1301 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1302 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1303 rp->siop_dsp = sc->sc_scriptspa; 1304 return (0); 1305 } 1306 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1307 if (acb == NULL) 1308 printf("%s: Bad message-in with no active command?\n", 1309 sc->sc_dev.dv_xname); 1310 /* Unrecognized message in byte */ 1311 dma_cachectl (&acb->msg[1],1); 1312 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1313 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1314 /* what should be done here? */ 1315 DCIAS(kvtop(&acb->msg[1])); 1316 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1317 return (0); 1318 } 1319 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1320 /* Status phase wasn't followed by message in phase? */ 1321 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1322 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1323 if (rp->siop_sbcl == 0xa7) { 1324 /* It is now, just continue the script? */ 1325 rp->siop_dcntl |= SIOP_DCNTL_STD; 1326 return (0); 1327 } 1328 } 1329 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1330 dma_cachectl (&acb->stat[0], 1); 1331 dma_cachectl (&acb->msg[0], 1); 1332 printf ("SIOP interrupt: %x sts %x msg %x %x sbcl %x\n", 1333 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1334 rp->siop_sbcl); 1335 siopreset (sc); 1336 *status = -1; 1337 return 0; /* siopreset has cleaned up */ 1338 } 1339 if (sstat0 & SIOP_SSTAT0_SGE) 1340 printf ("SIOP: SCSI Gross Error\n"); 1341 if (sstat0 & SIOP_SSTAT0_PAR) 1342 printf ("SIOP: Parity Error\n"); 1343 if (dstat & SIOP_DSTAT_IID) 1344 printf ("SIOP: Invalid instruction detected\n"); 1345 bad_phase: 1346 /* 1347 * temporary panic for unhandled conditions 1348 * displays various things about the 53C710 status and registers 1349 * then panics. 1350 * XXXX need to clean this up to print out the info, reset, and continue 1351 */ 1352 printf ("siopchkintr: target %x ds %x\n", target, &acb->ds); 1353 printf ("scripts %x ds %x rp %x dsp %x dcmd %x\n", sc->sc_scriptspa, 1354 kvtop(&acb->ds), kvtop(rp), rp->siop_dsp, 1355 *((long *)&rp->siop_dcmd)); 1356 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", 1357 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1358 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1359 #ifdef DEBUG 1360 if (siop_debug & 0x20) 1361 panic("siopchkintr: **** temp ****"); 1362 #endif 1363 #ifdef DDB 1364 Debugger (); 1365 #endif 1366 siopreset (sc); /* hard reset */ 1367 *status = -1; 1368 return 0; /* siopreset cleaned up */ 1369 } 1370 1371 void 1372 siop_select(sc) 1373 struct siop_softc *sc; 1374 { 1375 siop_regmap_p rp; 1376 struct siop_acb *acb = sc->sc_nexus; 1377 1378 #ifdef DEBUG 1379 if (siop_debug & 1) 1380 printf ("%s: select ", sc->sc_dev.dv_xname); 1381 #endif 1382 1383 rp = sc->sc_siopp; 1384 if (acb->xs->flags & SCSI_POLL || siop_no_dma) { 1385 sc->sc_flags |= SIOP_INTSOFF; 1386 sc->sc_flags &= ~SIOP_INTDEFER; 1387 if ((rp->siop_istat & 0x08) == 0) { 1388 rp->siop_sien = 0; 1389 rp->siop_dien = 0; 1390 } 1391 #if 0 1392 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1393 sc->sc_flags &= ~SIOP_INTSOFF; 1394 if ((rp->siop_istat & 0x08) == 0) { 1395 rp->siop_sien = sc->sc_sien; 1396 rp->siop_dien = sc->sc_dien; 1397 } 1398 #endif 1399 } 1400 #ifdef DEBUG 1401 if (siop_debug & 1) 1402 printf ("siop_select: target %x cmd %02x ds %x\n", 1403 acb->xs->sc_link->target, acb->cmd.opcode, 1404 &sc->sc_nexus->ds); 1405 #endif 1406 1407 siop_start(sc, acb->xs->sc_link->target, acb->xs->sc_link->lun, 1408 &acb->cmd, acb->clen, acb->daddr, acb->dleft); 1409 1410 return; 1411 } 1412 1413 /* 1414 * 53C710 interrupt handler 1415 */ 1416 1417 int 1418 siopintr (sc) 1419 register struct siop_softc *sc; 1420 { 1421 siop_regmap_p rp; 1422 register u_char istat, dstat, sstat0; 1423 int status; 1424 int s = splbio(); 1425 1426 istat = sc->sc_istat; 1427 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1428 splx(s); 1429 return; 1430 } 1431 1432 /* Got a valid interrupt on this device */ 1433 rp = sc->sc_siopp; 1434 dstat = sc->sc_dstat; 1435 sstat0 = sc->sc_sstat0; 1436 if (dstat & SIOP_DSTAT_SIR) 1437 sc->sc_intcode = rp->siop_dsps; 1438 sc->sc_istat = 0; 1439 #ifdef DEBUG 1440 if (siop_debug & 1) 1441 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1442 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1443 if (!sc->sc_active) { 1444 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %x status %x\n", 1445 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1446 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1447 } 1448 #endif 1449 1450 #ifdef DEBUG 1451 if (siop_debug & 5) { 1452 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1453 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 1454 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1455 rp->siop_dsps, rp->siop_sbcl, 1456 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1457 } 1458 #endif 1459 if (sc->sc_flags & SIOP_INTDEFER) { 1460 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1461 rp->siop_sien = sc->sc_sien; 1462 rp->siop_dien = sc->sc_dien; 1463 } 1464 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1465 #if 1 1466 if (status == 0xff) 1467 printf ("siopintr: status == 0xff\n"); 1468 #endif 1469 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1470 #if 0 1471 if (rp->siop_sbcl & SIOP_BSY) { 1472 printf ("%s: SCSI bus busy at completion", 1473 sc->sc_dev.dv_xname); 1474 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1475 sc->sc_nexus->xs->sc_link->target, 1476 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1477 rp->siop_dsp - sc->sc_scriptspa); 1478 } 1479 #endif 1480 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1481 sc->sc_nexus->stat[0] : -1); 1482 } 1483 } 1484 splx(s); 1485 } 1486 1487 /* 1488 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1489 * not be correct for other 53c710 boards. 1490 * 1491 */ 1492 scsi_period_to_siop (sc, target) 1493 struct siop_softc *sc; 1494 { 1495 int period, offset, i, sxfer, sbcl; 1496 1497 period = sc->sc_nexus->msg[4]; 1498 offset = sc->sc_nexus->msg[5]; 1499 #ifdef DEBUG_SYNC 1500 sxfer = 0; 1501 if (offset <= SIOP_MAX_OFFSET) 1502 sxfer = offset; 1503 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1504 if (period <= sync_tab[i].p) { 1505 sxfer |= sync_tab[i].r & 0x70; 1506 sbcl = sync_tab[i].r & 0x03; 1507 break; 1508 } 1509 } 1510 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1511 #endif 1512 for (sbcl = 1; sbcl < 4; ++sbcl) { 1513 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1514 if (sxfer >= 0 && sxfer <= 7) 1515 break; 1516 } 1517 if (sbcl > 3) { 1518 printf("siop sync: unable to compute sync params for period %dns\n", 1519 period * 4); 1520 /* 1521 * XXX need to pick a value we can do and renegotiate 1522 */ 1523 sxfer = sbcl = 0; 1524 } else { 1525 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1526 offset : SIOP_MAX_OFFSET); 1527 #ifdef DEBUG_SYNC 1528 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1529 period * 4, sxfer, sbcl); 1530 printf(" actual period %dns\n", 1531 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1532 #endif 1533 } 1534 sc->sc_sync[target].sxfer = sxfer; 1535 sc->sc_sync[target].sbcl = sbcl; 1536 #ifdef DEBUG_SYNC 1537 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1538 #endif 1539 } 1540 1541 #ifdef DEBUG 1542 1543 #if SIOP_TRACE_SIZE 1544 void 1545 siop_dump_trace() 1546 { 1547 int i; 1548 1549 printf("siop trace: next index %d\n", siop_trix); 1550 i = siop_trix; 1551 do { 1552 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1553 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1554 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1555 } while (i != siop_trix); 1556 } 1557 #endif 1558 1559 void 1560 siop_dump_acb(acb) 1561 struct siop_acb *acb; 1562 { 1563 u_char *b = (u_char *) &acb->cmd; 1564 int i; 1565 1566 printf("acb@%x ", acb); 1567 if (acb->xs == NULL) { 1568 printf("<unused>\n"); 1569 return; 1570 } 1571 printf("(%d:%d) flags %2x clen %2d cmd ", acb->xs->sc_link->target, 1572 acb->xs->sc_link->lun, acb->flags, acb->clen); 1573 for (i = acb->clen; i; --i) 1574 printf(" %02x", *b++); 1575 printf("\n"); 1576 printf(" xs: %08x data %8x:%04x ", acb->xs, acb->xs->data, 1577 acb->xs->datalen); 1578 printf("va %8x:%04x ", acb->iob_buf, acb->iob_len); 1579 printf("cur %8x:%04x\n", acb->iob_curbuf, acb->iob_curlen); 1580 } 1581 1582 void 1583 siop_dump(sc) 1584 struct siop_softc *sc; 1585 { 1586 struct siop_acb *acb; 1587 siop_regmap_p rp = sc->sc_siopp; 1588 int s; 1589 int i; 1590 1591 s = splbio(); 1592 #if SIOP_TRACE_SIZE 1593 siop_dump_trace(); 1594 #endif 1595 printf("%s@%x regs %x istat %x\n", 1596 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1597 if (acb = sc->free_list.tqh_first) { 1598 printf("Free list:\n"); 1599 while (acb) { 1600 siop_dump_acb(acb); 1601 acb = acb->chain.tqe_next; 1602 } 1603 } 1604 if (acb = sc->ready_list.tqh_first) { 1605 printf("Ready list:\n"); 1606 while (acb) { 1607 siop_dump_acb(acb); 1608 acb = acb->chain.tqe_next; 1609 } 1610 } 1611 if (acb = sc->nexus_list.tqh_first) { 1612 printf("Nexus list:\n"); 1613 while (acb) { 1614 siop_dump_acb(acb); 1615 acb = acb->chain.tqe_next; 1616 } 1617 } 1618 if (sc->sc_nexus) { 1619 printf("Nexus:\n"); 1620 siop_dump_acb(sc->sc_nexus); 1621 } 1622 for (i = 0; i < 8; ++i) { 1623 if (sc->sc_tinfo[i].cmds > 2) { 1624 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1625 i, sc->sc_tinfo[i].cmds, 1626 sc->sc_tinfo[i].dconns, 1627 sc->sc_tinfo[i].senses, 1628 sc->sc_tinfo[i].lubusy); 1629 } 1630 } 1631 splx(s); 1632 } 1633 #endif 1634
Indexes created Wed Sep 24 05:09:52 GMT 2025