siop.c revision 1.36
1 /* $NetBSD: siop.c,v 1.36 1997/07/26 22:07:54 is 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 /* XXX 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 * is this right? 380 */ 381 xs->status = stat; 382 383 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 384 if (stat == SCSI_CHECK) { 385 struct scsi_sense *ss = (void *)&acb->cmd; 386 bzero(ss, sizeof(*ss)); 387 ss->opcode = REQUEST_SENSE; 388 ss->byte2 = slp->lun << 5; 389 ss->length = sizeof(struct scsi_sense_data); 390 acb->clen = sizeof(*ss); 391 acb->daddr = (char *)&xs->sense; 392 acb->dleft = sizeof(struct scsi_sense_data); 393 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 394 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 395 --sc->sc_active; 396 sc->sc_tinfo[slp->target].lubusy &= 397 ~(1 << slp->lun); 398 sc->sc_tinfo[slp->target].senses++; 399 if (sc->sc_nexus == acb) { 400 sc->sc_nexus = NULL; 401 siop_sched(sc); 402 } 403 SIOP_TRACE('d','s',0,0) 404 return; 405 } 406 } 407 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 408 xs->error = XS_SENSE; 409 } else { 410 xs->resid = 0; /* XXXX */ 411 } 412 #if whataboutthisone 413 case SCSI_BUSY: 414 xs->error = XS_BUSY; 415 break; 416 #endif 417 xs->flags |= ITSDONE; 418 419 /* 420 * Remove the ACB from whatever queue it's on. We have to do a bit of 421 * a hack to figure out which queue it's on. Note that it is *not* 422 * necessary to cdr down the ready queue, but we must cdr down the 423 * nexus queue and see if it's there, so we can mark the unit as no 424 * longer busy. This code is sickening, but it works. 425 */ 426 if (acb == sc->sc_nexus) { 427 sc->sc_nexus = NULL; 428 sc->sc_tinfo[slp->target].lubusy &= ~(1<<slp->lun); 429 if (sc->ready_list.tqh_first) 430 dosched = 1; /* start next command */ 431 --sc->sc_active; 432 SIOP_TRACE('d','a',stat,0) 433 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 434 TAILQ_REMOVE(&sc->ready_list, acb, chain); 435 SIOP_TRACE('d','r',stat,0) 436 } else { 437 register struct siop_acb *acb2; 438 for (acb2 = sc->nexus_list.tqh_first; acb2; 439 acb2 = acb2->chain.tqe_next) 440 if (acb2 == acb) { 441 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 442 sc->sc_tinfo[slp->target].lubusy 443 &= ~(1<<slp->lun); 444 --sc->sc_active; 445 break; 446 } 447 if (acb2) 448 ; 449 else if (acb->chain.tqe_next) { 450 TAILQ_REMOVE(&sc->ready_list, acb, chain); 451 --sc->sc_active; 452 } else { 453 printf("%s: can't find matching acb\n", 454 sc->sc_dev.dv_xname); 455 #ifdef DDB 456 /* Debugger(); */ 457 #endif 458 } 459 SIOP_TRACE('d','n',stat,0); 460 } 461 /* Put it on the free list. */ 462 acb->flags = ACB_FREE; 463 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 464 465 sc->sc_tinfo[slp->target].cmds++; 466 467 scsi_done(xs); 468 469 if (dosched && sc->sc_nexus == NULL) 470 siop_sched(sc); 471 } 472 473 void 474 siopabort(sc, rp, where) 475 register struct siop_softc *sc; 476 siop_regmap_p rp; 477 char *where; 478 { 479 #ifdef fix_this 480 int i; 481 #endif 482 483 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 484 sc->sc_dev.dv_xname, 485 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 486 487 if (sc->sc_active > 0) { 488 #ifdef TODO 489 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 490 WAIT_CIP (rp); 491 492 GET_SBIC_asr (rp, asr); 493 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 494 { 495 /* ok, get more drastic.. */ 496 497 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 498 delay(25); 499 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 500 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 501 502 return; 503 } 504 505 do 506 { 507 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 508 GET_SBIC_csr (rp, csr); 509 } 510 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 511 && (csr != SBIC_CSR_CMD_INVALID)); 512 #endif 513 514 /* lets just hope it worked.. */ 515 #ifdef fix_this 516 for (i = 0; i < 2; ++i) { 517 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 518 sc->sc_cur) { 519 printf ("siopabort: cleanup!\n"); 520 sc->sc_iob[i].sc_xs = NULL; 521 } 522 } 523 #endif /* fix_this */ 524 /* sc->sc_active = 0; */ 525 } 526 } 527 528 void 529 siopinitialize(sc) 530 struct siop_softc *sc; 531 { 532 int i; 533 u_int inhibit_sync; 534 extern u_long scsi_nosync; 535 extern int shift_nosync; 536 537 /* 538 * Need to check that scripts is on a long word boundary 539 * Also should verify that dev doesn't span non-contiguous 540 * physical pages. 541 */ 542 sc->sc_scriptspa = kvtop((caddr_t)scripts); 543 544 /* 545 * malloc sc_acb to ensure that DS is on a long word boundary. 546 */ 547 548 MALLOC(sc->sc_acb, struct siop_acb *, 549 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 550 if (sc->sc_acb == NULL) 551 panic("siopinitialize: ACB malloc failed!"); 552 553 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 554 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 555 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 556 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 557 if (sc->sc_minsync < 25) 558 sc->sc_minsync = 25; 559 if (sc->sc_clock_freq <= 25) { 560 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 561 sc->sc_tcp[0] = sc->sc_tcp[1]; 562 } else if (sc->sc_clock_freq <= 37) { 563 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 564 sc->sc_tcp[0] = sc->sc_tcp[2]; 565 } else if (sc->sc_clock_freq <= 50) { 566 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 567 sc->sc_tcp[0] = sc->sc_tcp[3]; 568 } else { 569 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 570 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 571 } 572 573 if (scsi_nosync) { 574 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 575 shift_nosync += 8; 576 #ifdef DEBUG 577 if (inhibit_sync) 578 printf("%s: Inhibiting synchronous transfer %02x\n", 579 sc->sc_dev.dv_xname, inhibit_sync); 580 #endif 581 for (i = 0; i < 8; ++i) 582 if (inhibit_sync & (1 << i)) 583 siop_inhibit_sync[i] = 1; 584 } 585 586 siopreset (sc); 587 } 588 589 void 590 siopreset(sc) 591 struct siop_softc *sc; 592 { 593 siop_regmap_p rp; 594 u_int i, s; 595 u_char dummy; 596 struct siop_acb *acb; 597 598 rp = sc->sc_siopp; 599 600 if (sc->sc_flags & SIOP_ALIVE) 601 siopabort(sc, rp, "reset"); 602 603 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 604 605 s = splbio(); 606 607 /* 608 * Reset the chip 609 * XXX - is this really needed? 610 */ 611 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 612 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 613 rp->siop_istat &= ~SIOP_ISTAT_RST; 614 /* 615 * Reset SCSI bus (do we really want this?) 616 */ 617 rp->siop_sien = 0; 618 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 619 delay(1); 620 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 621 622 /* 623 * Set up various chip parameters 624 */ 625 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 626 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 627 rp->siop_dcntl = sc->sc_dcntl; 628 rp->siop_dmode = 0x80; /* burst length = 4 */ 629 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 630 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 631 rp->siop_scid = 1 << sc->sc_link.adapter_target; 632 rp->siop_dwt = 0x00; 633 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 634 rp->siop_ctest7 |= sc->sc_ctest7; 635 636 /* will need to re-negotiate sync xfers */ 637 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 638 639 i = rp->siop_istat; 640 if (i & SIOP_ISTAT_SIP) 641 dummy = rp->siop_sstat0; 642 if (i & SIOP_ISTAT_DIP) 643 dummy = rp->siop_dstat; 644 645 splx (s); 646 647 delay (siop_reset_delay * 1000); 648 printf("siop id %d reset V%d\n", sc->sc_link.adapter_target, 649 rp->siop_ctest8 >> 4); 650 651 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 652 TAILQ_INIT(&sc->ready_list); 653 TAILQ_INIT(&sc->nexus_list); 654 TAILQ_INIT(&sc->free_list); 655 sc->sc_nexus = NULL; 656 acb = sc->sc_acb; 657 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 658 for (i = 0; i < SIOP_NACB; i++) { 659 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 660 acb++; 661 } 662 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 663 } else { 664 if (sc->sc_nexus != NULL) { 665 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 666 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 667 } 668 while ((acb = sc->nexus_list.tqh_first) > 0) { 669 acb->xs->error = XS_DRIVER_STUFFUP; 670 siop_scsidone(acb, acb->stat[0]); 671 } 672 } 673 674 sc->sc_flags |= SIOP_ALIVE; 675 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 676 /* enable SCSI and DMA interrupts */ 677 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 678 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 679 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 680 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 681 rp->siop_sien = sc->sc_sien; 682 rp->siop_dien = sc->sc_dien; 683 } 684 685 /* 686 * Setup Data Storage for 53C710 and start SCRIPTS processing 687 */ 688 689 void 690 siop_start (sc, target, lun, cbuf, clen, buf, len) 691 struct siop_softc *sc; 692 int target; 693 int lun; 694 u_char *cbuf; 695 int clen; 696 u_char *buf; 697 int len; 698 { 699 siop_regmap_p rp = sc->sc_siopp; 700 int nchain; 701 int count, tcount; 702 char *addr, *dmaend; 703 struct siop_acb *acb = sc->sc_nexus; 704 #ifdef DEBUG 705 int i; 706 #endif 707 708 #ifdef DEBUG 709 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 710 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\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] %8p %lx\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 ((caddr_t)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 %p script %p dsa %p active %ld\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((caddr_t)&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 = 0; 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 %lx scripts %lx:%lx", 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 #ifdef DDB 902 Debugger(); 903 #endif 904 } 905 #endif 906 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 907 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 908 /* Normal completion status, or check condition */ 909 #ifdef DEBUG 910 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 911 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 912 kvtop((caddr_t)&acb->ds)); 913 panic("*** siop DSA invalid ***"); 914 } 915 #endif 916 target = acb->xs->sc_link->target; 917 if (sc->sc_sync[target].state == SYNC_SENT) { 918 #ifdef DEBUG 919 if (siopsync_debug) 920 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 921 acb->msg[0], acb->msg[1], acb->msg[2], 922 acb->msg[3], acb->msg[4], acb->msg[5]); 923 #endif 924 if (acb->msg[1] == 0xff) 925 printf ("%s: target %d ignored sync request\n", 926 sc->sc_dev.dv_xname, target); 927 else if (acb->msg[1] == MSG_REJECT) 928 printf ("%s: target %d rejected sync request\n", 929 sc->sc_dev.dv_xname, target); 930 sc->sc_sync[target].state = SYNC_DONE; 931 sc->sc_sync[target].sxfer = 0; 932 sc->sc_sync[target].sbcl = 0; 933 if (acb->msg[2] == 3 && 934 acb->msg[3] == MSG_SYNC_REQ && 935 acb->msg[5] != 0) { 936 #ifdef MAXTOR_KLUDGE 937 /* 938 * Kludge for my Maxtor XT8580S 939 * It accepts whatever we request, even 940 * though it won't work. So we ask for 941 * a short period than we can handle. If 942 * the device says it can do it, use 208ns. 943 * If the device says it can do less than 944 * 100ns, then we limit it to 100ns. 945 */ 946 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 947 #ifdef DEBUG 948 printf ("%d: target %d wanted %dns period\n", 949 sc->sc_dev.dv_xname, target, 950 acb->msg[4] * 4); 951 #endif 952 if (acb->msg[4] == 50 / 4) 953 acb->msg[4] = 208 / 4; 954 else 955 acb->msg[4] = 100 / 4; 956 } 957 #endif /* MAXTOR_KLUDGE */ 958 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 959 sc->sc_dev.dv_xname, target, 960 acb->msg[4] * 4, acb->msg[5]); 961 scsi_period_to_siop (sc, target); 962 } 963 } 964 dma_cachectl(&acb->stat[0], 1); 965 *status = acb->stat[0]; 966 #ifdef DEBUG 967 if (rp->siop_sbcl & SIOP_BSY) { 968 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 969 rp, &scripts, &acb->ds);*/ 970 #ifdef DDB 971 /*Debugger();*/ 972 #endif 973 } 974 if (acb->msg[0] != 0x00) 975 printf("%s: message was not COMMAND COMPLETE: %x\n", 976 sc->sc_dev.dv_xname, acb->msg[0]); 977 #endif 978 if (sc->nexus_list.tqh_first) 979 rp->siop_dcntl |= SIOP_DCNTL_STD; 980 return 1; 981 } 982 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 983 #ifdef DEBUG 984 ++siopphmm; 985 if (acb == NULL) 986 printf("%s: Phase mismatch with no active command?\n", 987 sc->sc_dev.dv_xname); 988 #endif 989 if (acb->iob_len) { 990 int adjust; 991 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 992 if (sstat1 & SIOP_SSTAT1_ORF) 993 ++adjust; 994 if (sstat1 & SIOP_SSTAT1_OLF) 995 ++adjust; 996 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 997 acb->iob_curlen += adjust; 998 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 999 #ifdef DEBUG 1000 if (siop_debug & 0x100) { 1001 int i; 1002 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1003 acb->iob_curbuf, acb->iob_curlen, dfifo, 1004 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1005 if (acb->ds.chain[1].datalen) { 1006 for (i = 0; acb->ds.chain[i].datalen; ++i) 1007 printf("chain[%d] addr %p len %lx\n", 1008 i, acb->ds.chain[i].databuf, 1009 acb->ds.chain[i].datalen); 1010 } 1011 } 1012 #endif 1013 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1014 } 1015 #ifdef DEBUG 1016 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1017 if (siop_debug & 9) 1018 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1019 rp->siop_sbcl, 1020 rp->siop_dsp - sc->sc_scriptspa, 1021 *((long *)&rp->siop_dcmd)); 1022 #endif 1023 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1024 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1025 rp->siop_sbcl, rp->siop_dsp); 1026 #if defined(DEBUG) && defined(DDB) 1027 Debugger(); 1028 #endif 1029 } 1030 switch (rp->siop_sbcl & 7) { 1031 case 0: /* data out */ 1032 case 1: /* data in */ 1033 case 2: /* status */ 1034 case 3: /* command */ 1035 case 6: /* message in */ 1036 case 7: /* message out */ 1037 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1038 break; 1039 default: 1040 goto bad_phase; 1041 } 1042 return 0; 1043 } 1044 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1045 #ifdef DEBUG 1046 if (acb == NULL) 1047 printf("%s: Select timeout with no active command?\n", 1048 sc->sc_dev.dv_xname); 1049 if (rp->siop_sbcl & SIOP_BSY) { 1050 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1051 rp, &scripts, &acb->ds); 1052 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1053 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1054 if (!(rp->siop_sbcl & SIOP_BSY)) { 1055 printf ("Yikes, it's not busy now!\n"); 1056 #if 0 1057 *status = -1; 1058 if (sc->nexus_list.tqh_first) 1059 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1060 return 1; 1061 #endif 1062 } 1063 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1064 return (0); 1065 #ifdef DDB 1066 Debugger(); 1067 #endif 1068 } 1069 #endif 1070 *status = -1; 1071 acb->xs->error = XS_SELTIMEOUT; 1072 if (sc->nexus_list.tqh_first) 1073 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1074 return 1; 1075 } 1076 if (acb) 1077 target = acb->xs->sc_link->target; 1078 else 1079 target = 7; 1080 if (sstat0 & SIOP_SSTAT0_UDC) { 1081 #ifdef DEBUG 1082 if (acb == NULL) 1083 printf("%s: Unexpected disconnect with no active command?\n", 1084 sc->sc_dev.dv_xname); 1085 printf ("%s: target %d disconnected unexpectedly\n", 1086 sc->sc_dev.dv_xname, target); 1087 #endif 1088 #if 0 1089 siopabort (sc, rp, "siopchkintr"); 1090 #endif 1091 *status = STS_BUSY; 1092 if (sc->nexus_list.tqh_first) 1093 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1094 return (acb != NULL); 1095 } 1096 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1097 rp->siop_dsps == 0xff02)) { 1098 #ifdef DEBUG 1099 if (siop_debug & 0x100) 1100 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", 1101 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1102 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1103 acb->iob_curbuf, acb->iob_curlen, 1104 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1105 #endif 1106 if (acb == NULL) { 1107 printf("%s: Disconnect with no active command?\n", 1108 sc->sc_dev.dv_xname); 1109 return (0); 1110 } 1111 /* 1112 * XXXX need to update iob_curbuf/iob_curlen to reflect 1113 * current data transferred. If device disconnected in 1114 * the middle of a DMA block, they should already be set 1115 * by the phase change interrupt. If the disconnect 1116 * occurs on a DMA block boundary, we have to figure out 1117 * which DMA block it was. 1118 */ 1119 if (acb->iob_len && rp->siop_temp) { 1120 int n = rp->siop_temp - sc->sc_scriptspa; 1121 1122 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1123 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1124 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1125 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1126 if (n < Ent_datain) 1127 n = (n - Ent_dataout) / 16; 1128 else 1129 n = (n - Ent_datain) / 16; 1130 if (n <= 0 && n > DMAMAXIO) 1131 printf("TEMP invalid %d\n", n); 1132 else { 1133 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1134 acb->iob_curlen = acb->ds.chain[n].datalen; 1135 } 1136 #ifdef DEBUG 1137 if (siop_debug & 0x100) { 1138 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1139 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1140 acb->iob_curlen); 1141 } 1142 #endif 1143 } 1144 /* 1145 * If data transfer was interrupted by disconnect, iob_curbuf 1146 * and iob_curlen should reflect the point of interruption. 1147 * Adjust the DMA chain so that the data transfer begins 1148 * at the appropriate place upon reselection. 1149 * XXX This should only be done on save data pointer message? 1150 */ 1151 if (acb->iob_curlen) { 1152 int i, j; 1153 1154 #ifdef DEBUG 1155 if (siop_debug & 0x100) 1156 printf ("%s: adjusting DMA chain\n", 1157 sc->sc_dev.dv_xname); 1158 if (rp->siop_dsps == 0xff02) 1159 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1160 sc->sc_dev.dv_xname, 1 << target); 1161 #endif 1162 for (i = 0; i < DMAMAXIO; ++i) { 1163 if (acb->ds.chain[i].datalen == 0) 1164 break; 1165 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1166 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1167 acb->ds.chain[i].datalen)) 1168 break; 1169 } 1170 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1171 printf("couldn't find saved data pointer: "); 1172 printf("curbuf %lx curlen %lx i %d\n", 1173 acb->iob_curbuf, acb->iob_curlen, i); 1174 #ifdef DDB 1175 Debugger(); 1176 #endif 1177 } 1178 #ifdef DEBUG 1179 if (siop_debug & 0x100) 1180 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1181 acb->ds.chain[0].databuf, 1182 acb->ds.chain[0].datalen, 1183 acb->iob_curbuf, 1184 acb->iob_curlen); 1185 #endif 1186 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1187 acb->ds.chain[0].datalen = acb->iob_curlen; 1188 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1189 #ifdef DEBUG 1190 if (siop_debug & 0x100) 1191 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1192 acb->ds.chain[j].databuf, 1193 acb->ds.chain[j].datalen, 1194 acb->ds.chain[i].databuf, 1195 acb->ds.chain[i].datalen); 1196 #endif 1197 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1198 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1199 } 1200 if (j < DMAMAXIO) 1201 acb->ds.chain[j].datalen = 0; 1202 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1203 } 1204 ++sc->sc_tinfo[target].dconns; 1205 /* 1206 * add nexus to waiting list 1207 * clear nexus 1208 * try to start another command for another target/lun 1209 */ 1210 acb->status = sc->sc_flags & SIOP_INTSOFF; 1211 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1212 sc->sc_nexus = NULL; /* no current device */ 1213 /* start script to wait for reselect */ 1214 if (sc->sc_nexus == NULL) 1215 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1216 /* XXXX start another command ? */ 1217 if (sc->ready_list.tqh_first) 1218 siop_sched(sc); 1219 return (0); 1220 } 1221 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1222 int reselid = rp->siop_scratch & 0x7f; 1223 int reselun = rp->siop_sfbr & 0x07; 1224 1225 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1226 #ifdef DEBUG 1227 if (siop_debug & 0x100) 1228 printf ("%s: target ID %02x reselected dsps %lx\n", 1229 sc->sc_dev.dv_xname, reselid, 1230 rp->siop_dsps); 1231 if ((rp->siop_sfbr & 0x80) == 0) 1232 printf("%s: Reselect message in was not identify: %x\n", 1233 sc->sc_dev.dv_xname, rp->siop_sfbr); 1234 #endif 1235 if (sc->sc_nexus) { 1236 #ifdef DEBUG 1237 if (siop_debug & 0x100) 1238 printf ("%s: reselect ID %02x w/active\n", 1239 sc->sc_dev.dv_xname, reselid); 1240 #endif 1241 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1242 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->target].lubusy 1243 &= ~(1 << sc->sc_nexus->xs->sc_link->lun); 1244 --sc->sc_active; 1245 } 1246 /* 1247 * locate acb of reselecting device 1248 * set sc->sc_nexus to acb 1249 */ 1250 for (acb = sc->nexus_list.tqh_first; acb; 1251 acb = acb->chain.tqe_next) { 1252 if (reselid != (acb->ds.scsi_addr >> 16) || 1253 reselun != (acb->msgout[0] & 0x07)) 1254 continue; 1255 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1256 sc->sc_nexus = acb; 1257 sc->sc_flags |= acb->status; 1258 acb->status = 0; 1259 DCIAS(kvtop(&acb->stat[0])); 1260 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1261 rp->siop_sxfer = sc->sc_sync[acb->xs->sc_link->target].sxfer; 1262 rp->siop_sbcl = sc->sc_sync[acb->xs->sc_link->target].sbcl; 1263 break; 1264 } 1265 if (acb == NULL) { 1266 printf("%s: target ID %02x reselect nexus_list %p\n", 1267 sc->sc_dev.dv_xname, reselid, 1268 sc->nexus_list.tqh_first); 1269 panic("unable to find reselecting device"); 1270 } 1271 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1272 rp->siop_temp = 0; 1273 rp->siop_dcntl |= SIOP_DCNTL_STD; 1274 return (0); 1275 } 1276 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1277 #ifdef DEBUG 1278 u_short ctest2 = rp->siop_ctest2; 1279 1280 /* reselect was interrupted (by Sig_P or select) */ 1281 if (siop_debug & 0x100 || 1282 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1283 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1284 sc->sc_dev.dv_xname, rp->siop_scntl1, 1285 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1286 #endif 1287 /* XXX assumes it was not select */ 1288 if (sc->sc_nexus == NULL) { 1289 #ifdef DEBUG 1290 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1291 sc->sc_dev.dv_xname); 1292 #if 0 1293 siop_dump(sc); 1294 #ifdef DDB 1295 Debugger(); 1296 #endif 1297 #endif 1298 #endif 1299 rp->siop_dcntl |= SIOP_DCNTL_STD; 1300 return(0); 1301 } 1302 target = sc->sc_nexus->xs->sc_link->target; 1303 rp->siop_temp = 0; 1304 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1305 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1306 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1307 rp->siop_dsp = sc->sc_scriptspa; 1308 return (0); 1309 } 1310 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1311 if (acb == NULL) 1312 printf("%s: Bad message-in with no active command?\n", 1313 sc->sc_dev.dv_xname); 1314 /* Unrecognized message in byte */ 1315 dma_cachectl (&acb->msg[1],1); 1316 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1317 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1318 /* what should be done here? */ 1319 DCIAS(kvtop(&acb->msg[1])); 1320 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1321 return (0); 1322 } 1323 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1324 /* Status phase wasn't followed by message in phase? */ 1325 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1326 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1327 if (rp->siop_sbcl == 0xa7) { 1328 /* It is now, just continue the script? */ 1329 rp->siop_dcntl |= SIOP_DCNTL_STD; 1330 return (0); 1331 } 1332 } 1333 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1334 dma_cachectl (&acb->stat[0], 1); 1335 dma_cachectl (&acb->msg[0], 1); 1336 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1337 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1338 rp->siop_sbcl); 1339 siopreset (sc); 1340 *status = -1; 1341 return 0; /* siopreset has cleaned up */ 1342 } 1343 if (sstat0 & SIOP_SSTAT0_SGE) 1344 printf ("SIOP: SCSI Gross Error\n"); 1345 if (sstat0 & SIOP_SSTAT0_PAR) 1346 printf ("SIOP: Parity Error\n"); 1347 if (dstat & SIOP_DSTAT_IID) 1348 printf ("SIOP: Invalid instruction detected\n"); 1349 bad_phase: 1350 /* 1351 * temporary panic for unhandled conditions 1352 * displays various things about the 53C710 status and registers 1353 * then panics. 1354 * XXXX need to clean this up to print out the info, reset, and continue 1355 */ 1356 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1357 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1358 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1359 *((long *)&rp->siop_dcmd)); 1360 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1361 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1362 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1363 #ifdef DEBUG 1364 if (siop_debug & 0x20) 1365 panic("siopchkintr: **** temp ****"); 1366 #endif 1367 #ifdef DDB 1368 Debugger (); 1369 #endif 1370 siopreset (sc); /* hard reset */ 1371 *status = -1; 1372 return 0; /* siopreset cleaned up */ 1373 } 1374 1375 void 1376 siop_select(sc) 1377 struct siop_softc *sc; 1378 { 1379 siop_regmap_p rp; 1380 struct siop_acb *acb = sc->sc_nexus; 1381 1382 #ifdef DEBUG 1383 if (siop_debug & 1) 1384 printf ("%s: select ", sc->sc_dev.dv_xname); 1385 #endif 1386 1387 rp = sc->sc_siopp; 1388 if (acb->xs->flags & SCSI_POLL || siop_no_dma) { 1389 sc->sc_flags |= SIOP_INTSOFF; 1390 sc->sc_flags &= ~SIOP_INTDEFER; 1391 if ((rp->siop_istat & 0x08) == 0) { 1392 rp->siop_sien = 0; 1393 rp->siop_dien = 0; 1394 } 1395 #if 0 1396 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1397 sc->sc_flags &= ~SIOP_INTSOFF; 1398 if ((rp->siop_istat & 0x08) == 0) { 1399 rp->siop_sien = sc->sc_sien; 1400 rp->siop_dien = sc->sc_dien; 1401 } 1402 #endif 1403 } 1404 #ifdef DEBUG 1405 if (siop_debug & 1) 1406 printf ("siop_select: target %x cmd %02x ds %p\n", 1407 acb->xs->sc_link->target, acb->cmd.opcode, 1408 &sc->sc_nexus->ds); 1409 #endif 1410 1411 siop_start(sc, acb->xs->sc_link->target, acb->xs->sc_link->lun, 1412 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1413 1414 return; 1415 } 1416 1417 /* 1418 * 53C710 interrupt handler 1419 */ 1420 1421 void 1422 siopintr (sc) 1423 register struct siop_softc *sc; 1424 { 1425 siop_regmap_p rp; 1426 register u_char istat, dstat, sstat0; 1427 int status; 1428 int s = splbio(); 1429 1430 istat = sc->sc_istat; 1431 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1432 splx(s); 1433 return; 1434 } 1435 1436 /* Got a valid interrupt on this device */ 1437 rp = sc->sc_siopp; 1438 dstat = sc->sc_dstat; 1439 sstat0 = sc->sc_sstat0; 1440 if (dstat & SIOP_DSTAT_SIR) 1441 sc->sc_intcode = rp->siop_dsps; 1442 sc->sc_istat = 0; 1443 #ifdef DEBUG 1444 if (siop_debug & 1) 1445 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1446 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1447 if (!sc->sc_active) { 1448 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1449 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1450 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1451 } 1452 #endif 1453 1454 #ifdef DEBUG 1455 if (siop_debug & 5) { 1456 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1457 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1458 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1459 rp->siop_dsps, rp->siop_sbcl, 1460 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1461 } 1462 #endif 1463 if (sc->sc_flags & SIOP_INTDEFER) { 1464 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1465 rp->siop_sien = sc->sc_sien; 1466 rp->siop_dien = sc->sc_dien; 1467 } 1468 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1469 #if 1 1470 if (status == 0xff) 1471 printf ("siopintr: status == 0xff\n"); 1472 #endif 1473 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1474 #if 0 1475 if (rp->siop_sbcl & SIOP_BSY) { 1476 printf ("%s: SCSI bus busy at completion", 1477 sc->sc_dev.dv_xname); 1478 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1479 sc->sc_nexus->xs->sc_link->target, 1480 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1481 rp->siop_dsp - sc->sc_scriptspa); 1482 } 1483 #endif 1484 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1485 sc->sc_nexus->stat[0] : -1); 1486 } 1487 } 1488 splx(s); 1489 } 1490 1491 /* 1492 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1493 * not be correct for other 53c710 boards. 1494 * 1495 */ 1496 void 1497 scsi_period_to_siop (sc, target) 1498 struct siop_softc *sc; 1499 int target; 1500 { 1501 int period, offset, sxfer, sbcl = 0; 1502 #ifdef DEBUG_SYNC 1503 int i; 1504 #endif 1505 1506 period = sc->sc_nexus->msg[4]; 1507 offset = sc->sc_nexus->msg[5]; 1508 #ifdef DEBUG_SYNC 1509 sxfer = 0; 1510 if (offset <= SIOP_MAX_OFFSET) 1511 sxfer = offset; 1512 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1513 if (period <= sync_tab[i].p) { 1514 sxfer |= sync_tab[i].r & 0x70; 1515 sbcl = sync_tab[i].r & 0x03; 1516 break; 1517 } 1518 } 1519 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1520 #endif 1521 for (sbcl = 1; sbcl < 4; ++sbcl) { 1522 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1523 if (sxfer >= 0 && sxfer <= 7) 1524 break; 1525 } 1526 if (sbcl > 3) { 1527 printf("siop sync: unable to compute sync params for period %dns\n", 1528 period * 4); 1529 /* 1530 * XXX need to pick a value we can do and renegotiate 1531 */ 1532 sxfer = sbcl = 0; 1533 } else { 1534 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1535 offset : SIOP_MAX_OFFSET); 1536 #ifdef DEBUG_SYNC 1537 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1538 period * 4, sxfer, sbcl); 1539 printf(" actual period %dns\n", 1540 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1541 #endif 1542 } 1543 sc->sc_sync[target].sxfer = sxfer; 1544 sc->sc_sync[target].sbcl = sbcl; 1545 #ifdef DEBUG_SYNC 1546 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1547 #endif 1548 } 1549 1550 #ifdef DEBUG 1551 1552 #if SIOP_TRACE_SIZE 1553 void 1554 siop_dump_trace() 1555 { 1556 int i; 1557 1558 printf("siop trace: next index %d\n", siop_trix); 1559 i = siop_trix; 1560 do { 1561 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1562 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1563 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1564 } while (i != siop_trix); 1565 } 1566 #endif 1567 1568 void 1569 siop_dump_acb(acb) 1570 struct siop_acb *acb; 1571 { 1572 u_char *b = (u_char *) &acb->cmd; 1573 int i; 1574 1575 printf("acb@%p ", acb); 1576 if (acb->xs == NULL) { 1577 printf("<unused>\n"); 1578 return; 1579 } 1580 printf("(%d:%d) flags %2x clen %2d cmd ", acb->xs->sc_link->target, 1581 acb->xs->sc_link->lun, acb->flags, acb->clen); 1582 for (i = acb->clen; i; --i) 1583 printf(" %02x", *b++); 1584 printf("\n"); 1585 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1586 acb->xs->datalen); 1587 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1588 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1589 } 1590 1591 void 1592 siop_dump(sc) 1593 struct siop_softc *sc; 1594 { 1595 struct siop_acb *acb; 1596 siop_regmap_p rp = sc->sc_siopp; 1597 int s; 1598 int i; 1599 1600 s = splbio(); 1601 #if SIOP_TRACE_SIZE 1602 siop_dump_trace(); 1603 #endif 1604 printf("%s@%p regs %p istat %x\n", 1605 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1606 if ((acb = sc->free_list.tqh_first) > 0) { 1607 printf("Free list:\n"); 1608 while (acb) { 1609 siop_dump_acb(acb); 1610 acb = acb->chain.tqe_next; 1611 } 1612 } 1613 if ((acb = sc->ready_list.tqh_first) > 0) { 1614 printf("Ready list:\n"); 1615 while (acb) { 1616 siop_dump_acb(acb); 1617 acb = acb->chain.tqe_next; 1618 } 1619 } 1620 if ((acb = sc->nexus_list.tqh_first) > 0) { 1621 printf("Nexus list:\n"); 1622 while (acb) { 1623 siop_dump_acb(acb); 1624 acb = acb->chain.tqe_next; 1625 } 1626 } 1627 if (sc->sc_nexus) { 1628 printf("Nexus:\n"); 1629 siop_dump_acb(sc->sc_nexus); 1630 } 1631 for (i = 0; i < 8; ++i) { 1632 if (sc->sc_tinfo[i].cmds > 2) { 1633 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1634 i, sc->sc_tinfo[i].cmds, 1635 sc->sc_tinfo[i].dconns, 1636 sc->sc_tinfo[i].senses, 1637 sc->sc_tinfo[i].lubusy); 1638 } 1639 } 1640 splx(s); 1641 } 1642 #endif 1643
Indexes created Wed Sep 24 05:09:52 GMT 2025