siop.c revision 1.32
1 /* $NetBSD: siop.c,v 1.32 1996/04/28 06:28:24 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 /* 62 * SCSI delays 63 * In u-seconds, primarily for state changes on the SPC. 64 */ 65 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 66 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 67 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 68 69 void siop_select __P((struct siop_softc *)); 70 void siopabort __P((struct siop_softc *, siop_regmap_p, char *)); 71 void sioperror __P((struct siop_softc *, siop_regmap_p, u_char)); 72 void siopstart __P((struct siop_softc *)); 73 int siop_checkintr __P((struct siop_softc *, u_char, u_char, u_char, int *)); 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 void siopintr __P((struct siop_softc *)); 80 void scsi_period_to_siop __P((struct siop_softc *, int)); 81 void siop_start __P((struct siop_softc *, int, int, u_char *, int, u_char *, int)); 82 void siop_dump_acb __P((struct siop_acb *)); 83 84 /* 53C710 script */ 85 const 86 #include <amiga/dev/siop_script.out> 87 88 /* default to not inhibit sync negotiation on any drive */ 89 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 90 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 91 int siop_no_dma = 0; 92 93 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 94 95 int siop_cmd_wait = SCSI_CMD_WAIT; 96 int siop_data_wait = SCSI_DATA_WAIT; 97 int siop_init_wait = SCSI_INIT_WAIT; 98 99 #ifdef DEBUG_SYNC 100 /* 101 * sync period transfer lookup - only valid for 66Mhz clock 102 */ 103 static struct { 104 unsigned char p; /* period from sync request message */ 105 unsigned char r; /* siop_period << 4 | sbcl */ 106 } sync_tab[] = { 107 { 60/4, 0<<4 | 1}, 108 { 76/4, 1<<4 | 1}, 109 { 92/4, 2<<4 | 1}, 110 { 92/4, 0<<4 | 2}, 111 {108/4, 3<<4 | 1}, 112 {116/4, 1<<4 | 2}, 113 {120/4, 4<<4 | 1}, 114 {120/4, 0<<4 | 3}, 115 {136/4, 5<<4 | 1}, 116 {140/4, 2<<4 | 2}, 117 {152/4, 6<<4 | 1}, 118 {152/4, 1<<4 | 3}, 119 {164/4, 3<<4 | 2}, 120 {168/4, 7<<4 | 1}, 121 {180/4, 2<<4 | 3}, 122 {184/4, 4<<4 | 2}, 123 {208/4, 5<<4 | 2}, 124 {212/4, 3<<4 | 3}, 125 {232/4, 6<<4 | 2}, 126 {240/4, 4<<4 | 3}, 127 {256/4, 7<<4 | 2}, 128 {272/4, 5<<4 | 3}, 129 {300/4, 6<<4 | 3}, 130 {332/4, 7<<4 | 3} 131 }; 132 #endif 133 134 #ifdef DEBUG 135 /* 136 * 0x01 - full debug 137 * 0x02 - DMA chaining 138 * 0x04 - siopintr 139 * 0x08 - phase mismatch 140 * 0x10 - <not used> 141 * 0x20 - panic on unhandled exceptions 142 * 0x100 - disconnect/reselect 143 */ 144 int siop_debug = 0; 145 int siopsync_debug = 0; 146 int siopdma_hits = 0; 147 int siopdma_misses = 0; 148 int siopchain_ints = 0; 149 int siopstarts = 0; 150 int siopints = 0; 151 int siopphmm = 0; 152 #define SIOP_TRACE_SIZE 128 153 #define SIOP_TRACE(a,b,c,d) \ 154 siop_trbuf[siop_trix] = (a); \ 155 siop_trbuf[siop_trix+1] = (b); \ 156 siop_trbuf[siop_trix+2] = (c); \ 157 siop_trbuf[siop_trix+3] = (d); \ 158 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 159 u_char siop_trbuf[SIOP_TRACE_SIZE]; 160 int siop_trix; 161 void siop_dump __P((struct siop_softc *)); 162 void siop_dump_trace __P((void)); 163 #else 164 #define SIOP_TRACE(a,b,c,d) 165 #endif 166 167 168 /* 169 * default minphys routine for siop based controllers 170 */ 171 void 172 siop_minphys(bp) 173 struct buf *bp; 174 { 175 176 /* 177 * No max transfer at this level. 178 */ 179 minphys(bp); 180 } 181 182 /* 183 * used by specific siop controller 184 * 185 */ 186 int 187 siop_scsicmd(xs) 188 struct scsi_xfer *xs; 189 { 190 struct siop_acb *acb; 191 struct siop_softc *sc; 192 struct scsi_link *slp; 193 int flags, s; 194 195 slp = xs->sc_link; 196 sc = slp->adapter_softc; 197 flags = xs->flags; 198 199 /* XXXX ?? */ 200 if (flags & SCSI_DATA_UIO) 201 panic("siop: scsi data uio requested"); 202 203 /* XXXX ?? */ 204 if (sc->sc_nexus && flags & SCSI_POLL) 205 /* panic("siop_scsicmd: busy");*/ 206 printf("siop_scsicmd: busy\n"); 207 208 s = splbio(); 209 acb = sc->free_list.tqh_first; 210 if (acb) { 211 TAILQ_REMOVE(&sc->free_list, acb, chain); 212 } 213 splx(s); 214 215 if (acb == NULL) { 216 xs->error = XS_DRIVER_STUFFUP; 217 return(TRY_AGAIN_LATER); 218 } 219 220 acb->flags = ACB_ACTIVE; 221 acb->xs = xs; 222 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 223 acb->clen = xs->cmdlen; 224 acb->daddr = xs->data; 225 acb->dleft = xs->datalen; 226 227 s = splbio(); 228 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 229 230 if (sc->sc_nexus == NULL) 231 siop_sched(sc); 232 233 splx(s); 234 235 if (flags & SCSI_POLL || siop_no_dma) 236 return(siop_poll(sc, acb)); 237 return(SUCCESSFULLY_QUEUED); 238 } 239 240 int 241 siop_poll(sc, acb) 242 struct siop_softc *sc; 243 struct siop_acb *acb; 244 { 245 siop_regmap_p rp = sc->sc_siopp; 246 struct scsi_xfer *xs = acb->xs; 247 int i; 248 int status; 249 u_char istat; 250 u_char dstat; 251 u_char sstat0; 252 int s; 253 int to; 254 255 s = splbio(); 256 to = xs->timeout / 1000; 257 if (sc->nexus_list.tqh_first) 258 printf("%s: siop_poll called with disconnected device\n", 259 sc->sc_dev.dv_xname); 260 for (;;) { 261 /* use cmd_wait values? */ 262 i = 50000; 263 spl0(); 264 while (((istat = rp->siop_istat) & 265 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 266 if (--i <= 0) { 267 #ifdef DEBUG 268 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 269 xs->sc_link->target, acb->cmd.opcode, 270 rp->siop_sbcl, rp->siop_dsp, 271 rp->siop_dsp - sc->sc_scriptspa, 272 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 273 #endif 274 i = 50000; 275 --to; 276 if (to <= 0) { 277 siopreset(sc); 278 return(COMPLETE); 279 } 280 } 281 delay(10); 282 } 283 sstat0 = rp->siop_sstat0; 284 dstat = rp->siop_dstat; 285 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 286 if (acb != sc->sc_nexus) 287 printf("%s: siop_poll disconnected device completed\n", 288 sc->sc_dev.dv_xname); 289 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 290 sc->sc_flags &= ~SIOP_INTSOFF; 291 rp->siop_sien = sc->sc_sien; 292 rp->siop_dien = sc->sc_dien; 293 } 294 siop_scsidone(sc->sc_nexus, status); 295 } 296 if (xs->flags & ITSDONE) 297 break; 298 } 299 splx(s); 300 return (COMPLETE); 301 } 302 303 /* 304 * start next command that's ready 305 */ 306 void 307 siop_sched(sc) 308 struct siop_softc *sc; 309 { 310 struct scsi_link *slp; 311 struct siop_acb *acb; 312 int i; 313 314 #ifdef DEBUG 315 if (sc->sc_nexus) { 316 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 317 sc->sc_dev.dv_xname, sc->sc_nexus, 318 sc->sc_nexus->xs->sc_link->target, 319 sc->ready_list.tqh_first, 320 sc->ready_list.tqh_first->xs->sc_link->target); 321 return; 322 } 323 #endif 324 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 325 slp = acb->xs->sc_link; 326 i = slp->target; 327 if(!(sc->sc_tinfo[i].lubusy & (1 << slp->lun))) { 328 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 329 330 TAILQ_REMOVE(&sc->ready_list, acb, chain); 331 sc->sc_nexus = acb; 332 slp = acb->xs->sc_link; 333 ti = &sc->sc_tinfo[slp->target]; 334 ti->lubusy |= (1 << slp->lun); 335 break; 336 } 337 } 338 339 if (acb == NULL) { 340 #ifdef DEBUGXXX 341 printf("%s: siop_sched didn't find ready command\n", 342 sc->sc_dev.dv_xname); 343 #endif 344 return; 345 } 346 347 if (acb->xs->flags & SCSI_RESET) 348 siopreset(sc); 349 350 #if 0 351 acb->cmd.bytes[0] |= slp->lun << 5; /* XXXX */ 352 #endif 353 ++sc->sc_active; 354 siop_select(sc); 355 } 356 357 void 358 siop_scsidone(acb, stat) 359 struct siop_acb *acb; 360 int stat; 361 { 362 struct scsi_xfer *xs; 363 struct scsi_link *slp; 364 struct siop_softc *sc; 365 int dosched = 0; 366 367 if (acb == NULL || (xs = acb->xs) == NULL) { 368 #ifdef DIAGNOSTIC 369 printf("siop_scsidone: NULL acb or scsi_xfer\n"); 370 #if defined(DEBUG) && defined(DDB) 371 Debugger(); 372 #endif 373 #endif 374 return; 375 } 376 slp = xs->sc_link; 377 sc = slp->adapter_softc; 378 /* 379 * XXX Support old-style instrumentation for now. 380 * IS THIS REALLY THE RIGHT PLACE FOR THIS? --thorpej 381 */ 382 if (slp->device_softc && 383 ((struct device *)(slp->device_softc))->dv_unit < dk_ndrive) 384 ++dk_xfer[((struct device *)(slp->device_softc))->dv_unit]; 385 /* 386 * is this right? 387 */ 388 xs->status = stat; 389 390 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 391 if (stat == SCSI_CHECK) { 392 struct scsi_sense *ss = (void *)&acb->cmd; 393 bzero(ss, sizeof(*ss)); 394 ss->opcode = REQUEST_SENSE; 395 ss->byte2 = slp->lun << 5; 396 ss->length = sizeof(struct scsi_sense_data); 397 acb->clen = sizeof(*ss); 398 acb->daddr = (char *)&xs->sense; 399 acb->dleft = sizeof(struct scsi_sense_data); 400 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 401 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 402 --sc->sc_active; 403 sc->sc_tinfo[slp->target].lubusy &= 404 ~(1 << slp->lun); 405 sc->sc_tinfo[slp->target].senses++; 406 if (sc->sc_nexus == acb) { 407 sc->sc_nexus = NULL; 408 siop_sched(sc); 409 } 410 SIOP_TRACE('d','s',0,0) 411 return; 412 } 413 } 414 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 415 xs->error = XS_SENSE; 416 } else { 417 xs->resid = 0; /* XXXX */ 418 } 419 #if whataboutthisone 420 case SCSI_BUSY: 421 xs->error = XS_BUSY; 422 break; 423 #endif 424 xs->flags |= ITSDONE; 425 426 /* 427 * Remove the ACB from whatever queue it's on. We have to do a bit of 428 * a hack to figure out which queue it's on. Note that it is *not* 429 * necessary to cdr down the ready queue, but we must cdr down the 430 * nexus queue and see if it's there, so we can mark the unit as no 431 * longer busy. This code is sickening, but it works. 432 */ 433 if (acb == sc->sc_nexus) { 434 sc->sc_nexus = NULL; 435 sc->sc_tinfo[slp->target].lubusy &= ~(1<<slp->lun); 436 if (sc->ready_list.tqh_first) 437 dosched = 1; /* start next command */ 438 --sc->sc_active; 439 SIOP_TRACE('d','a',stat,0) 440 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 441 TAILQ_REMOVE(&sc->ready_list, acb, chain); 442 SIOP_TRACE('d','r',stat,0) 443 } else { 444 register struct siop_acb *acb2; 445 for (acb2 = sc->nexus_list.tqh_first; acb2; 446 acb2 = acb2->chain.tqe_next) 447 if (acb2 == acb) { 448 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 449 sc->sc_tinfo[slp->target].lubusy 450 &= ~(1<<slp->lun); 451 --sc->sc_active; 452 break; 453 } 454 if (acb2) 455 ; 456 else if (acb->chain.tqe_next) { 457 TAILQ_REMOVE(&sc->ready_list, acb, chain); 458 --sc->sc_active; 459 } else { 460 printf("%s: can't find matching acb\n", 461 sc->sc_dev.dv_xname); 462 #ifdef DDB 463 /* Debugger(); */ 464 #endif 465 } 466 SIOP_TRACE('d','n',stat,0); 467 } 468 /* Put it on the free list. */ 469 acb->flags = ACB_FREE; 470 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 471 472 sc->sc_tinfo[slp->target].cmds++; 473 474 scsi_done(xs); 475 476 if (dosched && sc->sc_nexus == NULL) 477 siop_sched(sc); 478 } 479 480 void 481 siopabort(sc, rp, where) 482 register struct siop_softc *sc; 483 siop_regmap_p rp; 484 char *where; 485 { 486 #ifdef fix_this 487 int i; 488 #endif 489 490 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 491 sc->sc_dev.dv_xname, 492 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 493 494 if (sc->sc_active > 0) { 495 #ifdef TODO 496 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 497 WAIT_CIP (rp); 498 499 GET_SBIC_asr (rp, asr); 500 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 501 { 502 /* ok, get more drastic.. */ 503 504 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 505 delay(25); 506 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 507 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 508 509 return; 510 } 511 512 do 513 { 514 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 515 GET_SBIC_csr (rp, csr); 516 } 517 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 518 && (csr != SBIC_CSR_CMD_INVALID)); 519 #endif 520 521 /* lets just hope it worked.. */ 522 #ifdef fix_this 523 for (i = 0; i < 2; ++i) { 524 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 525 sc->sc_cur) { 526 printf ("siopabort: cleanup!\n"); 527 sc->sc_iob[i].sc_xs = NULL; 528 } 529 } 530 #endif /* fix_this */ 531 /* sc->sc_active = 0; */ 532 } 533 } 534 535 void 536 siopinitialize(sc) 537 struct siop_softc *sc; 538 { 539 int i; 540 u_int inhibit_sync; 541 extern u_long scsi_nosync; 542 extern int shift_nosync; 543 544 /* 545 * Need to check that scripts is on a long word boundary 546 * Also should verify that dev doesn't span non-contiguous 547 * physical pages. 548 */ 549 sc->sc_scriptspa = kvtop((caddr_t)scripts); 550 551 /* 552 * malloc sc_acb to ensure that DS is on a long word boundary. 553 */ 554 555 MALLOC(sc->sc_acb, struct siop_acb *, 556 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 557 if (sc->sc_acb == NULL) 558 panic("siopinitialize: ACB malloc failed!"); 559 560 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 561 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 562 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 563 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 564 if (sc->sc_minsync < 25) 565 sc->sc_minsync = 25; 566 if (sc->sc_clock_freq <= 25) { 567 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 568 sc->sc_tcp[0] = sc->sc_tcp[1]; 569 } else if (sc->sc_clock_freq <= 37) { 570 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 571 sc->sc_tcp[0] = sc->sc_tcp[2]; 572 } else if (sc->sc_clock_freq <= 50) { 573 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 574 sc->sc_tcp[0] = sc->sc_tcp[3]; 575 } else { 576 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 577 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 578 } 579 580 if (scsi_nosync) { 581 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 582 shift_nosync += 8; 583 #ifdef DEBUG 584 if (inhibit_sync) 585 printf("%s: Inhibiting synchronous transfer %02x\n", 586 sc->sc_dev.dv_xname, inhibit_sync); 587 #endif 588 for (i = 0; i < 8; ++i) 589 if (inhibit_sync & (1 << i)) 590 siop_inhibit_sync[i] = 1; 591 } 592 593 siopreset (sc); 594 } 595 596 void 597 siopreset(sc) 598 struct siop_softc *sc; 599 { 600 siop_regmap_p rp; 601 u_int i, s; 602 u_char dummy; 603 struct siop_acb *acb; 604 605 rp = sc->sc_siopp; 606 607 if (sc->sc_flags & SIOP_ALIVE) 608 siopabort(sc, rp, "reset"); 609 610 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 611 612 s = splbio(); 613 614 /* 615 * Reset the chip 616 * XXX - is this really needed? 617 */ 618 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 619 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 620 rp->siop_istat &= ~SIOP_ISTAT_RST; 621 /* 622 * Reset SCSI bus (do we really want this?) 623 */ 624 rp->siop_sien = 0; 625 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 626 delay(1); 627 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 628 629 /* 630 * Set up various chip parameters 631 */ 632 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 633 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 634 rp->siop_dcntl = sc->sc_dcntl; 635 rp->siop_dmode = 0x80; /* burst length = 4 */ 636 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 637 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 638 rp->siop_scid = 1 << sc->sc_link.adapter_target; 639 rp->siop_dwt = 0x00; 640 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 641 rp->siop_ctest7 |= sc->sc_ctest7; 642 643 /* will need to re-negotiate sync xfers */ 644 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 645 646 i = rp->siop_istat; 647 if (i & SIOP_ISTAT_SIP) 648 dummy = rp->siop_sstat0; 649 if (i & SIOP_ISTAT_DIP) 650 dummy = rp->siop_dstat; 651 652 splx (s); 653 654 delay (siop_reset_delay * 1000); 655 printf("siop id %d reset V%d\n", sc->sc_link.adapter_target, 656 rp->siop_ctest8 >> 4); 657 658 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 659 TAILQ_INIT(&sc->ready_list); 660 TAILQ_INIT(&sc->nexus_list); 661 TAILQ_INIT(&sc->free_list); 662 sc->sc_nexus = NULL; 663 acb = sc->sc_acb; 664 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 665 for (i = 0; i < SIOP_NACB; i++) { 666 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 667 acb++; 668 } 669 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 670 } else { 671 if (sc->sc_nexus != NULL) { 672 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 673 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 674 } 675 while ((acb = sc->nexus_list.tqh_first) > 0) { 676 acb->xs->error = XS_DRIVER_STUFFUP; 677 siop_scsidone(acb, acb->stat[0]); 678 } 679 } 680 681 sc->sc_flags |= SIOP_ALIVE; 682 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 683 /* enable SCSI and DMA interrupts */ 684 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 685 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 686 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 687 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 688 rp->siop_sien = sc->sc_sien; 689 rp->siop_dien = sc->sc_dien; 690 } 691 692 /* 693 * Setup Data Storage for 53C710 and start SCRIPTS processing 694 */ 695 696 void 697 siop_start (sc, target, lun, cbuf, clen, buf, len) 698 struct siop_softc *sc; 699 int target; 700 int lun; 701 u_char *cbuf; 702 int clen; 703 u_char *buf; 704 int len; 705 { 706 siop_regmap_p rp = sc->sc_siopp; 707 int nchain; 708 int count, tcount; 709 char *addr, *dmaend; 710 struct siop_acb *acb = sc->sc_nexus; 711 #ifdef DEBUG 712 int i; 713 #endif 714 715 #ifdef DEBUG 716 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 717 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 718 rp, &scripts, &acb->ds, sc->sc_active); 719 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 720 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 721 rp->siop_sien, rp->siop_dien); 722 #ifdef DDB 723 /*Debugger();*/ 724 #endif 725 } 726 #endif 727 acb->msgout[0] = MSG_IDENTIFY | lun; 728 if (siop_allow_disc[target] & 2 || 729 (siop_allow_disc[target] && len == 0)) 730 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 731 acb->status = 0; 732 acb->stat[0] = -1; 733 acb->msg[0] = -1; 734 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 735 acb->ds.idlen = 1; 736 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 737 acb->ds.cmdlen = clen; 738 acb->ds.cmdbuf = (char *) kvtop(cbuf); 739 acb->ds.stslen = 1; 740 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 741 acb->ds.msglen = 1; 742 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 743 acb->msg[1] = -1; 744 acb->ds.msginlen = 1; 745 acb->ds.extmsglen = 1; 746 acb->ds.synmsglen = 3; 747 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 748 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 749 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 750 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 751 752 if (sc->sc_sync[target].state == SYNC_START) { 753 if (siop_inhibit_sync[target]) { 754 sc->sc_sync[target].state = SYNC_DONE; 755 sc->sc_sync[target].sbcl = 0; 756 sc->sc_sync[target].sxfer = 0; 757 #ifdef DEBUG 758 if (siopsync_debug) 759 printf ("Forcing target %d asynchronous\n", target); 760 #endif 761 } 762 else { 763 acb->msg[2] = -1; 764 acb->msgout[1] = MSG_EXT_MESSAGE; 765 acb->msgout[2] = 3; 766 acb->msgout[3] = MSG_SYNC_REQ; 767 #ifdef MAXTOR_SYNC_KLUDGE 768 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 769 #else 770 acb->msgout[4] = sc->sc_minsync; 771 #endif 772 acb->msgout[5] = SIOP_MAX_OFFSET; 773 acb->ds.idlen = 6; 774 sc->sc_sync[target].state = SYNC_SENT; 775 #ifdef DEBUG 776 if (siopsync_debug) 777 printf ("Sending sync request to target %d\n", target); 778 #endif 779 } 780 } 781 782 /* 783 * Build physical DMA addresses for scatter/gather I/O 784 */ 785 acb->iob_buf = buf; 786 acb->iob_len = len; 787 acb->iob_curbuf = acb->iob_curlen = 0; 788 nchain = 0; 789 count = len; 790 addr = buf; 791 dmaend = NULL; 792 while (count > 0) { 793 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 794 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 795 tcount = count; 796 acb->ds.chain[nchain].datalen = tcount; 797 addr += tcount; 798 count -= tcount; 799 if (acb->ds.chain[nchain].databuf == dmaend) { 800 dmaend += acb->ds.chain[nchain].datalen; 801 acb->ds.chain[nchain].datalen = 0; 802 acb->ds.chain[--nchain].datalen += tcount; 803 #ifdef DEBUG 804 ++siopdma_hits; 805 #endif 806 } 807 else { 808 dmaend = acb->ds.chain[nchain].databuf + 809 acb->ds.chain[nchain].datalen; 810 acb->ds.chain[nchain].datalen = tcount; 811 #ifdef DEBUG 812 if (nchain) /* Don't count miss on first one */ 813 ++siopdma_misses; 814 #endif 815 } 816 ++nchain; 817 } 818 #ifdef DEBUG 819 if (nchain != 1 && len != 0 && siop_debug & 3) { 820 printf ("DMA chaining set: %d\n", nchain); 821 for (i = 0; i < nchain; ++i) { 822 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 823 acb->ds.chain[i].datalen); 824 } 825 } 826 #endif 827 828 /* push data cache for all data the 53c710 needs to access */ 829 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 830 dma_cachectl (cbuf, clen); 831 if (buf != NULL && len != 0) 832 dma_cachectl (buf, len); 833 #ifdef DEBUG 834 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 835 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 836 rp, &scripts, &acb->ds, sc->sc_active); 837 #ifdef DDB 838 /*Debugger();*/ 839 #endif 840 } 841 #endif 842 if (sc->nexus_list.tqh_first == NULL) { 843 if (rp->siop_istat & SIOP_ISTAT_CON) 844 printf("%s: siop_select while connected?\n", 845 sc->sc_dev.dv_xname); 846 rp->siop_temp = 0; 847 rp->siop_sbcl = sc->sc_sync[target].sbcl; 848 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 849 rp->siop_dsp = sc->sc_scriptspa; 850 SIOP_TRACE('s',1,0,0) 851 } else { 852 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 853 rp->siop_istat = SIOP_ISTAT_SIGP; 854 SIOP_TRACE('s',2,0,0); 855 } 856 else { 857 SIOP_TRACE('s',3,rp->siop_istat,0); 858 } 859 } 860 #ifdef DEBUG 861 ++siopstarts; 862 #endif 863 } 864 865 /* 866 * Process a DMA or SCSI interrupt from the 53C710 SIOP 867 */ 868 869 int 870 siop_checkintr(sc, istat, dstat, sstat0, status) 871 struct siop_softc *sc; 872 u_char istat; 873 u_char dstat; 874 u_char sstat0; 875 int *status; 876 { 877 siop_regmap_p rp = sc->sc_siopp; 878 struct siop_acb *acb = sc->sc_nexus; 879 int target = 0; 880 int dfifo, dbc, sstat1; 881 882 dfifo = rp->siop_dfifo; 883 dbc = rp->siop_dbc0; 884 sstat1 = rp->siop_sstat1; 885 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 886 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 887 ; 888 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 889 #ifdef DEBUG 890 ++siopints; 891 #if 0 892 if (siop_debug & 0x100) { 893 DCIAS(&acb->stat[0]); /* XXX */ 894 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 895 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 896 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 897 acb->msg[0], acb->msg[1], acb->msg[2], 898 acb->msg[3], acb->msg[4], acb->msg[5]); 899 } 900 #endif 901 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 902 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 903 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 904 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 905 sc->sc_scriptspa + sizeof(scripts)); 906 printf(" istat %x dstat %x sstat0 %x\n", 907 istat, dstat, sstat0); 908 #ifdef DDB 909 Debugger(); 910 #endif 911 } 912 #endif 913 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 914 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 915 /* Normal completion status, or check condition */ 916 #ifdef DEBUG 917 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 918 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 919 kvtop((caddr_t)&acb->ds)); 920 panic("*** siop DSA invalid ***"); 921 } 922 #endif 923 target = acb->xs->sc_link->target; 924 if (sc->sc_sync[target].state == SYNC_SENT) { 925 #ifdef DEBUG 926 if (siopsync_debug) 927 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 928 acb->msg[0], acb->msg[1], acb->msg[2], 929 acb->msg[3], acb->msg[4], acb->msg[5]); 930 #endif 931 if (acb->msg[1] == 0xff) 932 printf ("%s: target %d ignored sync request\n", 933 sc->sc_dev.dv_xname, target); 934 else if (acb->msg[1] == MSG_REJECT) 935 printf ("%s: target %d rejected sync request\n", 936 sc->sc_dev.dv_xname, target); 937 sc->sc_sync[target].state = SYNC_DONE; 938 sc->sc_sync[target].sxfer = 0; 939 sc->sc_sync[target].sbcl = 0; 940 if (acb->msg[2] == 3 && 941 acb->msg[3] == MSG_SYNC_REQ && 942 acb->msg[5] != 0) { 943 #ifdef MAXTOR_KLUDGE 944 /* 945 * Kludge for my Maxtor XT8580S 946 * It accepts whatever we request, even 947 * though it won't work. So we ask for 948 * a short period than we can handle. If 949 * the device says it can do it, use 208ns. 950 * If the device says it can do less than 951 * 100ns, then we limit it to 100ns. 952 */ 953 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 954 #ifdef DEBUG 955 printf ("%d: target %d wanted %dns period\n", 956 sc->sc_dev.dv_xname, target, 957 acb->msg[4] * 4); 958 #endif 959 if (acb->msg[4] == 50 / 4) 960 acb->msg[4] = 208 / 4; 961 else 962 acb->msg[4] = 100 / 4; 963 } 964 #endif /* MAXTOR_KLUDGE */ 965 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 966 sc->sc_dev.dv_xname, target, 967 acb->msg[4] * 4, acb->msg[5]); 968 scsi_period_to_siop (sc, target); 969 } 970 } 971 dma_cachectl(&acb->stat[0], 1); 972 *status = acb->stat[0]; 973 #ifdef DEBUG 974 if (rp->siop_sbcl & SIOP_BSY) { 975 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 976 rp, &scripts, &acb->ds);*/ 977 #ifdef DDB 978 /*Debugger();*/ 979 #endif 980 } 981 if (acb->msg[0] != 0x00) 982 printf("%s: message was not COMMAND COMPLETE: %x\n", 983 sc->sc_dev.dv_xname, acb->msg[0]); 984 #endif 985 if (sc->nexus_list.tqh_first) 986 rp->siop_dcntl |= SIOP_DCNTL_STD; 987 return 1; 988 } 989 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 990 #ifdef DEBUG 991 ++siopphmm; 992 if (acb == NULL) 993 printf("%s: Phase mismatch with no active command?\n", 994 sc->sc_dev.dv_xname); 995 #endif 996 if (acb->iob_len) { 997 int adjust; 998 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 999 if (sstat1 & SIOP_SSTAT1_ORF) 1000 ++adjust; 1001 if (sstat1 & SIOP_SSTAT1_OLF) 1002 ++adjust; 1003 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1004 acb->iob_curlen += adjust; 1005 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1006 #ifdef DEBUG 1007 if (siop_debug & 0x100) { 1008 int i; 1009 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1010 acb->iob_curbuf, acb->iob_curlen, dfifo, 1011 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1012 if (acb->ds.chain[1].datalen) { 1013 for (i = 0; acb->ds.chain[i].datalen; ++i) 1014 printf("chain[%d] addr %p len %lx\n", 1015 i, acb->ds.chain[i].databuf, 1016 acb->ds.chain[i].datalen); 1017 } 1018 } 1019 #endif 1020 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1021 } 1022 #ifdef DEBUG 1023 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1024 if (siop_debug & 9) 1025 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1026 rp->siop_sbcl, 1027 rp->siop_dsp - sc->sc_scriptspa, 1028 *((long *)&rp->siop_dcmd)); 1029 #endif 1030 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1031 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1032 rp->siop_sbcl, rp->siop_dsp); 1033 #if defined(DEBUG) && defined(DDB) 1034 Debugger(); 1035 #endif 1036 } 1037 switch (rp->siop_sbcl & 7) { 1038 case 0: /* data out */ 1039 case 1: /* data in */ 1040 case 2: /* status */ 1041 case 3: /* command */ 1042 case 6: /* message in */ 1043 case 7: /* message out */ 1044 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1045 break; 1046 default: 1047 goto bad_phase; 1048 } 1049 return 0; 1050 } 1051 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1052 #ifdef DEBUG 1053 if (acb == NULL) 1054 printf("%s: Select timeout with no active command?\n", 1055 sc->sc_dev.dv_xname); 1056 if (rp->siop_sbcl & SIOP_BSY) { 1057 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1058 rp, &scripts, &acb->ds); 1059 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1060 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1061 if (!(rp->siop_sbcl & SIOP_BSY)) { 1062 printf ("Yikes, it's not busy now!\n"); 1063 #if 0 1064 *status = -1; 1065 if (sc->nexus_list.tqh_first) 1066 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1067 return 1; 1068 #endif 1069 } 1070 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1071 return (0); 1072 #ifdef DDB 1073 Debugger(); 1074 #endif 1075 } 1076 #endif 1077 *status = -1; 1078 acb->xs->error = XS_SELTIMEOUT; 1079 if (sc->nexus_list.tqh_first) 1080 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1081 return 1; 1082 } 1083 if (acb) 1084 target = acb->xs->sc_link->target; 1085 else 1086 target = 7; 1087 if (sstat0 & SIOP_SSTAT0_UDC) { 1088 #ifdef DEBUG 1089 if (acb == NULL) 1090 printf("%s: Unexpected disconnect with no active command?\n", 1091 sc->sc_dev.dv_xname); 1092 printf ("%s: target %d disconnected unexpectedly\n", 1093 sc->sc_dev.dv_xname, target); 1094 #endif 1095 #if 0 1096 siopabort (sc, rp, "siopchkintr"); 1097 #endif 1098 *status = STS_BUSY; 1099 if (sc->nexus_list.tqh_first) 1100 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1101 return (acb != NULL); 1102 } 1103 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1104 rp->siop_dsps == 0xff02)) { 1105 #ifdef DEBUG 1106 if (siop_debug & 0x100) 1107 printf ("%s: ID %02x disconnected TEMP %lx (+%lx) curbuf %lx curlen %lx buf %p len %lx dfifo %x dbc %x sstat1 %x starts %d acb %p\n", 1108 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1109 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1110 acb->iob_curbuf, acb->iob_curlen, 1111 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1112 #endif 1113 if (acb == NULL) { 1114 printf("%s: Disconnect with no active command?\n", 1115 sc->sc_dev.dv_xname); 1116 return (0); 1117 } 1118 /* 1119 * XXXX need to update iob_curbuf/iob_curlen to reflect 1120 * current data transferred. If device disconnected in 1121 * the middle of a DMA block, they should already be set 1122 * by the phase change interrupt. If the disconnect 1123 * occurs on a DMA block boundary, we have to figure out 1124 * which DMA block it was. 1125 */ 1126 if (acb->iob_len && rp->siop_temp) { 1127 int n = rp->siop_temp - sc->sc_scriptspa; 1128 1129 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1130 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1131 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1132 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1133 if (n < Ent_datain) 1134 n = (n - Ent_dataout) / 16; 1135 else 1136 n = (n - Ent_datain) / 16; 1137 if (n <= 0 && n > DMAMAXIO) 1138 printf("TEMP invalid %d\n", n); 1139 else { 1140 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1141 acb->iob_curlen = acb->ds.chain[n].datalen; 1142 } 1143 #ifdef DEBUG 1144 if (siop_debug & 0x100) { 1145 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1146 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1147 acb->iob_curlen); 1148 } 1149 #endif 1150 } 1151 /* 1152 * If data transfer was interrupted by disconnect, iob_curbuf 1153 * and iob_curlen should reflect the point of interruption. 1154 * Adjust the DMA chain so that the data transfer begins 1155 * at the appropriate place upon reselection. 1156 * XXX This should only be done on save data pointer message? 1157 */ 1158 if (acb->iob_curlen) { 1159 int i, j; 1160 1161 #ifdef DEBUG 1162 if (siop_debug & 0x100) 1163 printf ("%s: adjusting DMA chain\n", 1164 sc->sc_dev.dv_xname); 1165 if (rp->siop_dsps == 0xff02) 1166 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1167 sc->sc_dev.dv_xname, 1 << target); 1168 #endif 1169 for (i = 0; i < DMAMAXIO; ++i) { 1170 if (acb->ds.chain[i].datalen == 0) 1171 break; 1172 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1173 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1174 acb->ds.chain[i].datalen)) 1175 break; 1176 } 1177 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1178 printf("couldn't find saved data pointer: "); 1179 printf("curbuf %lx curlen %lx i %d\n", 1180 acb->iob_curbuf, acb->iob_curlen, i); 1181 #ifdef DDB 1182 Debugger(); 1183 #endif 1184 } 1185 #ifdef DEBUG 1186 if (siop_debug & 0x100) 1187 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1188 acb->ds.chain[0].databuf, 1189 acb->ds.chain[0].datalen, 1190 acb->iob_curbuf, 1191 acb->iob_curlen); 1192 #endif 1193 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1194 acb->ds.chain[0].datalen = acb->iob_curlen; 1195 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1196 #ifdef DEBUG 1197 if (siop_debug & 0x100) 1198 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1199 acb->ds.chain[j].databuf, 1200 acb->ds.chain[j].datalen, 1201 acb->ds.chain[i].databuf, 1202 acb->ds.chain[i].datalen); 1203 #endif 1204 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1205 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1206 } 1207 if (j < DMAMAXIO) 1208 acb->ds.chain[j].datalen = 0; 1209 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1210 } 1211 ++sc->sc_tinfo[target].dconns; 1212 /* 1213 * add nexus to waiting list 1214 * clear nexus 1215 * try to start another command for another target/lun 1216 */ 1217 acb->status = sc->sc_flags & SIOP_INTSOFF; 1218 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1219 sc->sc_nexus = NULL; /* no current device */ 1220 /* start script to wait for reselect */ 1221 if (sc->sc_nexus == NULL) 1222 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1223 /* XXXX start another command ? */ 1224 if (sc->ready_list.tqh_first) 1225 siop_sched(sc); 1226 return (0); 1227 } 1228 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1229 int reselid = rp->siop_scratch & 0x7f; 1230 int reselun = rp->siop_sfbr & 0x07; 1231 1232 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1233 #ifdef DEBUG 1234 if (siop_debug & 0x100) 1235 printf ("%s: target ID %02x reselected dsps %lx\n", 1236 sc->sc_dev.dv_xname, reselid, 1237 rp->siop_dsps); 1238 if ((rp->siop_sfbr & 0x80) == 0) 1239 printf("%s: Reselect message in was not identify: %x\n", 1240 sc->sc_dev.dv_xname, rp->siop_sfbr); 1241 #endif 1242 if (sc->sc_nexus) { 1243 #ifdef DEBUG 1244 if (siop_debug & 0x100) 1245 printf ("%s: reselect ID %02x w/active\n", 1246 sc->sc_dev.dv_xname, reselid); 1247 #endif 1248 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1249 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->target].lubusy 1250 &= ~(1 << sc->sc_nexus->xs->sc_link->lun); 1251 --sc->sc_active; 1252 } 1253 /* 1254 * locate acb of reselecting device 1255 * set sc->sc_nexus to acb 1256 */ 1257 for (acb = sc->nexus_list.tqh_first; acb; 1258 acb = acb->chain.tqe_next) { 1259 if (reselid != (acb->ds.scsi_addr >> 16) || 1260 reselun != (acb->msgout[0] & 0x07)) 1261 continue; 1262 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1263 sc->sc_nexus = acb; 1264 sc->sc_flags |= acb->status; 1265 acb->status = 0; 1266 DCIAS(kvtop(&acb->stat[0])); 1267 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1268 rp->siop_sxfer = sc->sc_sync[acb->xs->sc_link->target].sxfer; 1269 rp->siop_sbcl = sc->sc_sync[acb->xs->sc_link->target].sbcl; 1270 break; 1271 } 1272 if (acb == NULL) { 1273 printf("%s: target ID %02x reselect nexus_list %p\n", 1274 sc->sc_dev.dv_xname, reselid, 1275 sc->nexus_list.tqh_first); 1276 panic("unable to find reselecting device"); 1277 } 1278 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1279 rp->siop_temp = 0; 1280 rp->siop_dcntl |= SIOP_DCNTL_STD; 1281 return (0); 1282 } 1283 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1284 #ifdef DEBUG 1285 u_short ctest2 = rp->siop_ctest2; 1286 1287 /* reselect was interrupted (by Sig_P or select) */ 1288 if (siop_debug & 0x100 || 1289 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1290 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1291 sc->sc_dev.dv_xname, rp->siop_scntl1, 1292 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1293 #endif 1294 /* XXX assumes it was not select */ 1295 if (sc->sc_nexus == NULL) { 1296 #ifdef DEBUG 1297 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1298 sc->sc_dev.dv_xname); 1299 #if 0 1300 siop_dump(sc); 1301 #ifdef DDB 1302 Debugger(); 1303 #endif 1304 #endif 1305 #endif 1306 rp->siop_dcntl |= SIOP_DCNTL_STD; 1307 return(0); 1308 } 1309 target = sc->sc_nexus->xs->sc_link->target; 1310 rp->siop_temp = 0; 1311 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1312 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1313 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1314 rp->siop_dsp = sc->sc_scriptspa; 1315 return (0); 1316 } 1317 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1318 if (acb == NULL) 1319 printf("%s: Bad message-in with no active command?\n", 1320 sc->sc_dev.dv_xname); 1321 /* Unrecognized message in byte */ 1322 dma_cachectl (&acb->msg[1],1); 1323 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1324 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1325 /* what should be done here? */ 1326 DCIAS(kvtop(&acb->msg[1])); 1327 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1328 return (0); 1329 } 1330 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1331 /* Status phase wasn't followed by message in phase? */ 1332 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1333 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1334 if (rp->siop_sbcl == 0xa7) { 1335 /* It is now, just continue the script? */ 1336 rp->siop_dcntl |= SIOP_DCNTL_STD; 1337 return (0); 1338 } 1339 } 1340 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1341 dma_cachectl (&acb->stat[0], 1); 1342 dma_cachectl (&acb->msg[0], 1); 1343 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1344 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1345 rp->siop_sbcl); 1346 siopreset (sc); 1347 *status = -1; 1348 return 0; /* siopreset has cleaned up */ 1349 } 1350 if (sstat0 & SIOP_SSTAT0_SGE) 1351 printf ("SIOP: SCSI Gross Error\n"); 1352 if (sstat0 & SIOP_SSTAT0_PAR) 1353 printf ("SIOP: Parity Error\n"); 1354 if (dstat & SIOP_DSTAT_IID) 1355 printf ("SIOP: Invalid instruction detected\n"); 1356 bad_phase: 1357 /* 1358 * temporary panic for unhandled conditions 1359 * displays various things about the 53C710 status and registers 1360 * then panics. 1361 * XXXX need to clean this up to print out the info, reset, and continue 1362 */ 1363 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1364 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1365 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1366 *((long *)&rp->siop_dcmd)); 1367 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1368 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1369 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1370 #ifdef DEBUG 1371 if (siop_debug & 0x20) 1372 panic("siopchkintr: **** temp ****"); 1373 #endif 1374 #ifdef DDB 1375 Debugger (); 1376 #endif 1377 siopreset (sc); /* hard reset */ 1378 *status = -1; 1379 return 0; /* siopreset cleaned up */ 1380 } 1381 1382 void 1383 siop_select(sc) 1384 struct siop_softc *sc; 1385 { 1386 siop_regmap_p rp; 1387 struct siop_acb *acb = sc->sc_nexus; 1388 1389 #ifdef DEBUG 1390 if (siop_debug & 1) 1391 printf ("%s: select ", sc->sc_dev.dv_xname); 1392 #endif 1393 1394 rp = sc->sc_siopp; 1395 if (acb->xs->flags & SCSI_POLL || siop_no_dma) { 1396 sc->sc_flags |= SIOP_INTSOFF; 1397 sc->sc_flags &= ~SIOP_INTDEFER; 1398 if ((rp->siop_istat & 0x08) == 0) { 1399 rp->siop_sien = 0; 1400 rp->siop_dien = 0; 1401 } 1402 #if 0 1403 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1404 sc->sc_flags &= ~SIOP_INTSOFF; 1405 if ((rp->siop_istat & 0x08) == 0) { 1406 rp->siop_sien = sc->sc_sien; 1407 rp->siop_dien = sc->sc_dien; 1408 } 1409 #endif 1410 } 1411 #ifdef DEBUG 1412 if (siop_debug & 1) 1413 printf ("siop_select: target %x cmd %02x ds %p\n", 1414 acb->xs->sc_link->target, acb->cmd.opcode, 1415 &sc->sc_nexus->ds); 1416 #endif 1417 1418 siop_start(sc, acb->xs->sc_link->target, acb->xs->sc_link->lun, 1419 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1420 1421 return; 1422 } 1423 1424 /* 1425 * 53C710 interrupt handler 1426 */ 1427 1428 void 1429 siopintr (sc) 1430 register struct siop_softc *sc; 1431 { 1432 siop_regmap_p rp; 1433 register u_char istat, dstat, sstat0; 1434 int status; 1435 int s = splbio(); 1436 1437 istat = sc->sc_istat; 1438 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1439 splx(s); 1440 return; 1441 } 1442 1443 /* Got a valid interrupt on this device */ 1444 rp = sc->sc_siopp; 1445 dstat = sc->sc_dstat; 1446 sstat0 = sc->sc_sstat0; 1447 if (dstat & SIOP_DSTAT_SIR) 1448 sc->sc_intcode = rp->siop_dsps; 1449 sc->sc_istat = 0; 1450 #ifdef DEBUG 1451 if (siop_debug & 1) 1452 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1453 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1454 if (!sc->sc_active) { 1455 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1456 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1457 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1458 } 1459 #endif 1460 1461 #ifdef DEBUG 1462 if (siop_debug & 5) { 1463 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1464 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1465 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1466 rp->siop_dsps, rp->siop_sbcl, 1467 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1468 } 1469 #endif 1470 if (sc->sc_flags & SIOP_INTDEFER) { 1471 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1472 rp->siop_sien = sc->sc_sien; 1473 rp->siop_dien = sc->sc_dien; 1474 } 1475 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1476 #if 1 1477 if (status == 0xff) 1478 printf ("siopintr: status == 0xff\n"); 1479 #endif 1480 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1481 #if 0 1482 if (rp->siop_sbcl & SIOP_BSY) { 1483 printf ("%s: SCSI bus busy at completion", 1484 sc->sc_dev.dv_xname); 1485 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1486 sc->sc_nexus->xs->sc_link->target, 1487 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1488 rp->siop_dsp - sc->sc_scriptspa); 1489 } 1490 #endif 1491 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1492 sc->sc_nexus->stat[0] : -1); 1493 } 1494 } 1495 splx(s); 1496 } 1497 1498 /* 1499 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1500 * not be correct for other 53c710 boards. 1501 * 1502 */ 1503 void 1504 scsi_period_to_siop (sc, target) 1505 struct siop_softc *sc; 1506 int target; 1507 { 1508 int period, offset, sxfer, sbcl = 0; 1509 #ifdef DEBUG_SYNC 1510 int i; 1511 #endif 1512 1513 period = sc->sc_nexus->msg[4]; 1514 offset = sc->sc_nexus->msg[5]; 1515 #ifdef DEBUG_SYNC 1516 sxfer = 0; 1517 if (offset <= SIOP_MAX_OFFSET) 1518 sxfer = offset; 1519 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1520 if (period <= sync_tab[i].p) { 1521 sxfer |= sync_tab[i].r & 0x70; 1522 sbcl = sync_tab[i].r & 0x03; 1523 break; 1524 } 1525 } 1526 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1527 #endif 1528 for (sbcl = 1; sbcl < 4; ++sbcl) { 1529 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1530 if (sxfer >= 0 && sxfer <= 7) 1531 break; 1532 } 1533 if (sbcl > 3) { 1534 printf("siop sync: unable to compute sync params for period %dns\n", 1535 period * 4); 1536 /* 1537 * XXX need to pick a value we can do and renegotiate 1538 */ 1539 sxfer = sbcl = 0; 1540 } else { 1541 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1542 offset : SIOP_MAX_OFFSET); 1543 #ifdef DEBUG_SYNC 1544 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1545 period * 4, sxfer, sbcl); 1546 printf(" actual period %dns\n", 1547 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1548 #endif 1549 } 1550 sc->sc_sync[target].sxfer = sxfer; 1551 sc->sc_sync[target].sbcl = sbcl; 1552 #ifdef DEBUG_SYNC 1553 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1554 #endif 1555 } 1556 1557 #ifdef DEBUG 1558 1559 #if SIOP_TRACE_SIZE 1560 void 1561 siop_dump_trace() 1562 { 1563 int i; 1564 1565 printf("siop trace: next index %d\n", siop_trix); 1566 i = siop_trix; 1567 do { 1568 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1569 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1570 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1571 } while (i != siop_trix); 1572 } 1573 #endif 1574 1575 void 1576 siop_dump_acb(acb) 1577 struct siop_acb *acb; 1578 { 1579 u_char *b = (u_char *) &acb->cmd; 1580 int i; 1581 1582 printf("acb@%p ", acb); 1583 if (acb->xs == NULL) { 1584 printf("<unused>\n"); 1585 return; 1586 } 1587 printf("(%d:%d) flags %2x clen %2d cmd ", acb->xs->sc_link->target, 1588 acb->xs->sc_link->lun, acb->flags, acb->clen); 1589 for (i = acb->clen; i; --i) 1590 printf(" %02x", *b++); 1591 printf("\n"); 1592 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1593 acb->xs->datalen); 1594 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1595 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1596 } 1597 1598 void 1599 siop_dump(sc) 1600 struct siop_softc *sc; 1601 { 1602 struct siop_acb *acb; 1603 siop_regmap_p rp = sc->sc_siopp; 1604 int s; 1605 int i; 1606 1607 s = splbio(); 1608 #if SIOP_TRACE_SIZE 1609 siop_dump_trace(); 1610 #endif 1611 printf("%s@%p regs %p istat %x\n", 1612 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1613 if ((acb = sc->free_list.tqh_first) > 0) { 1614 printf("Free list:\n"); 1615 while (acb) { 1616 siop_dump_acb(acb); 1617 acb = acb->chain.tqe_next; 1618 } 1619 } 1620 if ((acb = sc->ready_list.tqh_first) > 0) { 1621 printf("Ready list:\n"); 1622 while (acb) { 1623 siop_dump_acb(acb); 1624 acb = acb->chain.tqe_next; 1625 } 1626 } 1627 if ((acb = sc->nexus_list.tqh_first) > 0) { 1628 printf("Nexus list:\n"); 1629 while (acb) { 1630 siop_dump_acb(acb); 1631 acb = acb->chain.tqe_next; 1632 } 1633 } 1634 if (sc->sc_nexus) { 1635 printf("Nexus:\n"); 1636 siop_dump_acb(sc->sc_nexus); 1637 } 1638 for (i = 0; i < 8; ++i) { 1639 if (sc->sc_tinfo[i].cmds > 2) { 1640 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1641 i, sc->sc_tinfo[i].cmds, 1642 sc->sc_tinfo[i].dconns, 1643 sc->sc_tinfo[i].senses, 1644 sc->sc_tinfo[i].lubusy); 1645 } 1646 } 1647 splx(s); 1648 } 1649 #endif 1650
Indexes created Tue Sep 23 21:09:50 GMT 2025