siop.c revision 1.31
1 /* $NetBSD: siop.c,v 1.31 1996/04/23 22:53:31 veego 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 = acb->xs; 363 struct scsi_link *slp; 364 struct siop_softc *sc; 365 int dosched = 0; 366 367 #ifdef DIAGNOSTIC 368 if (acb == NULL || xs == NULL) { 369 /* panic("siop_scsidone"); */ 370 printf("siop_scsidone: sc_nexus NULL\n"); 371 Debugger(); 372 return; 373 } 374 #endif 375 slp = xs->sc_link; 376 sc = slp->adapter_softc; 377 /* 378 * XXX Support old-style instrumentation for now. 379 * IS THIS REALLY THE RIGHT PLACE FOR THIS? --thorpej 380 */ 381 if (slp->device_softc && 382 ((struct device *)(slp->device_softc))->dv_unit < dk_ndrive) 383 ++dk_xfer[((struct device *)(slp->device_softc))->dv_unit]; 384 /* 385 * is this right? 386 */ 387 xs->status = stat; 388 389 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 390 if (stat == SCSI_CHECK) { 391 struct scsi_sense *ss = (void *)&acb->cmd; 392 bzero(ss, sizeof(*ss)); 393 ss->opcode = REQUEST_SENSE; 394 ss->byte2 = slp->lun << 5; 395 ss->length = sizeof(struct scsi_sense_data); 396 acb->clen = sizeof(*ss); 397 acb->daddr = (char *)&xs->sense; 398 acb->dleft = sizeof(struct scsi_sense_data); 399 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 400 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 401 --sc->sc_active; 402 sc->sc_tinfo[slp->target].lubusy &= 403 ~(1 << slp->lun); 404 sc->sc_tinfo[slp->target].senses++; 405 if (sc->sc_nexus == acb) { 406 sc->sc_nexus = NULL; 407 siop_sched(sc); 408 } 409 SIOP_TRACE('d','s',0,0) 410 return; 411 } 412 } 413 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 414 xs->error = XS_SENSE; 415 } else { 416 xs->resid = 0; /* XXXX */ 417 } 418 #if whataboutthisone 419 case SCSI_BUSY: 420 xs->error = XS_BUSY; 421 break; 422 #endif 423 xs->flags |= ITSDONE; 424 425 /* 426 * Remove the ACB from whatever queue it's on. We have to do a bit of 427 * a hack to figure out which queue it's on. Note that it is *not* 428 * necessary to cdr down the ready queue, but we must cdr down the 429 * nexus queue and see if it's there, so we can mark the unit as no 430 * longer busy. This code is sickening, but it works. 431 */ 432 if (acb == sc->sc_nexus) { 433 sc->sc_nexus = NULL; 434 sc->sc_tinfo[slp->target].lubusy &= ~(1<<slp->lun); 435 if (sc->ready_list.tqh_first) 436 dosched = 1; /* start next command */ 437 --sc->sc_active; 438 SIOP_TRACE('d','a',stat,0) 439 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 440 TAILQ_REMOVE(&sc->ready_list, acb, chain); 441 SIOP_TRACE('d','r',stat,0) 442 } else { 443 register struct siop_acb *acb2; 444 for (acb2 = sc->nexus_list.tqh_first; acb2; 445 acb2 = acb2->chain.tqe_next) 446 if (acb2 == acb) { 447 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 448 sc->sc_tinfo[slp->target].lubusy 449 &= ~(1<<slp->lun); 450 --sc->sc_active; 451 break; 452 } 453 if (acb2) 454 ; 455 else if (acb->chain.tqe_next) { 456 TAILQ_REMOVE(&sc->ready_list, acb, chain); 457 --sc->sc_active; 458 } else { 459 printf("%s: can't find matching acb\n", 460 sc->sc_dev.dv_xname); 461 #ifdef DDB 462 /* Debugger(); */ 463 #endif 464 } 465 SIOP_TRACE('d','n',stat,0); 466 } 467 /* Put it on the free list. */ 468 acb->flags = ACB_FREE; 469 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 470 471 sc->sc_tinfo[slp->target].cmds++; 472 473 scsi_done(xs); 474 475 if (dosched && sc->sc_nexus == NULL) 476 siop_sched(sc); 477 } 478 479 void 480 siopabort(sc, rp, where) 481 register struct siop_softc *sc; 482 siop_regmap_p rp; 483 char *where; 484 { 485 #ifdef fix_this 486 int i; 487 #endif 488 489 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 490 sc->sc_dev.dv_xname, 491 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 492 493 if (sc->sc_active > 0) { 494 #ifdef TODO 495 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 496 WAIT_CIP (rp); 497 498 GET_SBIC_asr (rp, asr); 499 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 500 { 501 /* ok, get more drastic.. */ 502 503 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 504 delay(25); 505 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 506 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 507 508 return; 509 } 510 511 do 512 { 513 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 514 GET_SBIC_csr (rp, csr); 515 } 516 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 517 && (csr != SBIC_CSR_CMD_INVALID)); 518 #endif 519 520 /* lets just hope it worked.. */ 521 #ifdef fix_this 522 for (i = 0; i < 2; ++i) { 523 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 524 sc->sc_cur) { 525 printf ("siopabort: cleanup!\n"); 526 sc->sc_iob[i].sc_xs = NULL; 527 } 528 } 529 #endif /* fix_this */ 530 /* sc->sc_active = 0; */ 531 } 532 } 533 534 void 535 siopinitialize(sc) 536 struct siop_softc *sc; 537 { 538 int i; 539 u_int inhibit_sync; 540 extern u_long scsi_nosync; 541 extern int shift_nosync; 542 543 /* 544 * Need to check that scripts is on a long word boundary 545 * Also should verify that dev doesn't span non-contiguous 546 * physical pages. 547 */ 548 sc->sc_scriptspa = kvtop((caddr_t)scripts); 549 550 /* 551 * malloc sc_acb to ensure that DS is on a long word boundary. 552 */ 553 554 MALLOC(sc->sc_acb, struct siop_acb *, 555 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 556 if (sc->sc_acb == NULL) 557 panic("siopinitialize: ACB malloc failed!"); 558 559 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 560 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 561 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 562 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 563 if (sc->sc_minsync < 25) 564 sc->sc_minsync = 25; 565 if (sc->sc_clock_freq <= 25) { 566 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 567 sc->sc_tcp[0] = sc->sc_tcp[1]; 568 } else if (sc->sc_clock_freq <= 37) { 569 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 570 sc->sc_tcp[0] = sc->sc_tcp[2]; 571 } else if (sc->sc_clock_freq <= 50) { 572 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 573 sc->sc_tcp[0] = sc->sc_tcp[3]; 574 } else { 575 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 576 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 577 } 578 579 if (scsi_nosync) { 580 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 581 shift_nosync += 8; 582 #ifdef DEBUG 583 if (inhibit_sync) 584 printf("%s: Inhibiting synchronous transfer %02x\n", 585 sc->sc_dev.dv_xname, inhibit_sync); 586 #endif 587 for (i = 0; i < 8; ++i) 588 if (inhibit_sync & (1 << i)) 589 siop_inhibit_sync[i] = 1; 590 } 591 592 siopreset (sc); 593 } 594 595 void 596 siopreset(sc) 597 struct siop_softc *sc; 598 { 599 siop_regmap_p rp; 600 u_int i, s; 601 u_char dummy; 602 struct siop_acb *acb; 603 604 rp = sc->sc_siopp; 605 606 if (sc->sc_flags & SIOP_ALIVE) 607 siopabort(sc, rp, "reset"); 608 609 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 610 611 s = splbio(); 612 613 /* 614 * Reset the chip 615 * XXX - is this really needed? 616 */ 617 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 618 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 619 rp->siop_istat &= ~SIOP_ISTAT_RST; 620 /* 621 * Reset SCSI bus (do we really want this?) 622 */ 623 rp->siop_sien = 0; 624 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 625 delay(1); 626 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 627 628 /* 629 * Set up various chip parameters 630 */ 631 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 632 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 633 rp->siop_dcntl = sc->sc_dcntl; 634 rp->siop_dmode = 0x80; /* burst length = 4 */ 635 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 636 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 637 rp->siop_scid = 1 << sc->sc_link.adapter_target; 638 rp->siop_dwt = 0x00; 639 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 640 rp->siop_ctest7 |= sc->sc_ctest7; 641 642 /* will need to re-negotiate sync xfers */ 643 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 644 645 i = rp->siop_istat; 646 if (i & SIOP_ISTAT_SIP) 647 dummy = rp->siop_sstat0; 648 if (i & SIOP_ISTAT_DIP) 649 dummy = rp->siop_dstat; 650 651 splx (s); 652 653 delay (siop_reset_delay * 1000); 654 printf("siop id %d reset V%d\n", sc->sc_link.adapter_target, 655 rp->siop_ctest8 >> 4); 656 657 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 658 TAILQ_INIT(&sc->ready_list); 659 TAILQ_INIT(&sc->nexus_list); 660 TAILQ_INIT(&sc->free_list); 661 sc->sc_nexus = NULL; 662 acb = sc->sc_acb; 663 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 664 for (i = 0; i < SIOP_NACB; i++) { 665 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 666 acb++; 667 } 668 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 669 } else { 670 if (sc->sc_nexus != NULL) { 671 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 672 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 673 } 674 while ((acb = sc->nexus_list.tqh_first) > 0) { 675 acb->xs->error = XS_DRIVER_STUFFUP; 676 siop_scsidone(acb, acb->stat[0]); 677 } 678 } 679 680 sc->sc_flags |= SIOP_ALIVE; 681 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 682 /* enable SCSI and DMA interrupts */ 683 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 684 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 685 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 686 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 687 rp->siop_sien = sc->sc_sien; 688 rp->siop_dien = sc->sc_dien; 689 } 690 691 /* 692 * Setup Data Storage for 53C710 and start SCRIPTS processing 693 */ 694 695 void 696 siop_start (sc, target, lun, cbuf, clen, buf, len) 697 struct siop_softc *sc; 698 int target; 699 int lun; 700 u_char *cbuf; 701 int clen; 702 u_char *buf; 703 int len; 704 { 705 siop_regmap_p rp = sc->sc_siopp; 706 int nchain; 707 int count, tcount; 708 char *addr, *dmaend; 709 struct siop_acb *acb = sc->sc_nexus; 710 #ifdef DEBUG 711 int i; 712 #endif 713 714 #ifdef DEBUG 715 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 716 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 717 rp, &scripts, &acb->ds, sc->sc_active); 718 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 719 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 720 rp->siop_sien, rp->siop_dien); 721 #ifdef DDB 722 /*Debugger();*/ 723 #endif 724 } 725 #endif 726 acb->msgout[0] = MSG_IDENTIFY | lun; 727 if (siop_allow_disc[target] & 2 || 728 (siop_allow_disc[target] && len == 0)) 729 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 730 acb->status = 0; 731 acb->stat[0] = -1; 732 acb->msg[0] = -1; 733 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 734 acb->ds.idlen = 1; 735 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 736 acb->ds.cmdlen = clen; 737 acb->ds.cmdbuf = (char *) kvtop(cbuf); 738 acb->ds.stslen = 1; 739 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 740 acb->ds.msglen = 1; 741 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 742 acb->msg[1] = -1; 743 acb->ds.msginlen = 1; 744 acb->ds.extmsglen = 1; 745 acb->ds.synmsglen = 3; 746 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 747 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 748 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 749 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 750 751 if (sc->sc_sync[target].state == SYNC_START) { 752 if (siop_inhibit_sync[target]) { 753 sc->sc_sync[target].state = SYNC_DONE; 754 sc->sc_sync[target].sbcl = 0; 755 sc->sc_sync[target].sxfer = 0; 756 #ifdef DEBUG 757 if (siopsync_debug) 758 printf ("Forcing target %d asynchronous\n", target); 759 #endif 760 } 761 else { 762 acb->msg[2] = -1; 763 acb->msgout[1] = MSG_EXT_MESSAGE; 764 acb->msgout[2] = 3; 765 acb->msgout[3] = MSG_SYNC_REQ; 766 #ifdef MAXTOR_SYNC_KLUDGE 767 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 768 #else 769 acb->msgout[4] = sc->sc_minsync; 770 #endif 771 acb->msgout[5] = SIOP_MAX_OFFSET; 772 acb->ds.idlen = 6; 773 sc->sc_sync[target].state = SYNC_SENT; 774 #ifdef DEBUG 775 if (siopsync_debug) 776 printf ("Sending sync request to target %d\n", target); 777 #endif 778 } 779 } 780 781 /* 782 * Build physical DMA addresses for scatter/gather I/O 783 */ 784 acb->iob_buf = buf; 785 acb->iob_len = len; 786 acb->iob_curbuf = acb->iob_curlen = 0; 787 nchain = 0; 788 count = len; 789 addr = buf; 790 dmaend = NULL; 791 while (count > 0) { 792 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 793 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 794 tcount = count; 795 acb->ds.chain[nchain].datalen = tcount; 796 addr += tcount; 797 count -= tcount; 798 if (acb->ds.chain[nchain].databuf == dmaend) { 799 dmaend += acb->ds.chain[nchain].datalen; 800 acb->ds.chain[nchain].datalen = 0; 801 acb->ds.chain[--nchain].datalen += tcount; 802 #ifdef DEBUG 803 ++siopdma_hits; 804 #endif 805 } 806 else { 807 dmaend = acb->ds.chain[nchain].databuf + 808 acb->ds.chain[nchain].datalen; 809 acb->ds.chain[nchain].datalen = tcount; 810 #ifdef DEBUG 811 if (nchain) /* Don't count miss on first one */ 812 ++siopdma_misses; 813 #endif 814 } 815 ++nchain; 816 } 817 #ifdef DEBUG 818 if (nchain != 1 && len != 0 && siop_debug & 3) { 819 printf ("DMA chaining set: %d\n", nchain); 820 for (i = 0; i < nchain; ++i) { 821 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 822 acb->ds.chain[i].datalen); 823 } 824 } 825 #endif 826 827 /* push data cache for all data the 53c710 needs to access */ 828 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 829 dma_cachectl (cbuf, clen); 830 if (buf != NULL && len != 0) 831 dma_cachectl (buf, len); 832 #ifdef DEBUG 833 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 834 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 835 rp, &scripts, &acb->ds, sc->sc_active); 836 #ifdef DDB 837 /*Debugger();*/ 838 #endif 839 } 840 #endif 841 if (sc->nexus_list.tqh_first == NULL) { 842 if (rp->siop_istat & SIOP_ISTAT_CON) 843 printf("%s: siop_select while connected?\n", 844 sc->sc_dev.dv_xname); 845 rp->siop_temp = 0; 846 rp->siop_sbcl = sc->sc_sync[target].sbcl; 847 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 848 rp->siop_dsp = sc->sc_scriptspa; 849 SIOP_TRACE('s',1,0,0) 850 } else { 851 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 852 rp->siop_istat = SIOP_ISTAT_SIGP; 853 SIOP_TRACE('s',2,0,0); 854 } 855 else { 856 SIOP_TRACE('s',3,rp->siop_istat,0); 857 } 858 } 859 #ifdef DEBUG 860 ++siopstarts; 861 #endif 862 } 863 864 /* 865 * Process a DMA or SCSI interrupt from the 53C710 SIOP 866 */ 867 868 int 869 siop_checkintr(sc, istat, dstat, sstat0, status) 870 struct siop_softc *sc; 871 u_char istat; 872 u_char dstat; 873 u_char sstat0; 874 int *status; 875 { 876 siop_regmap_p rp = sc->sc_siopp; 877 struct siop_acb *acb = sc->sc_nexus; 878 int target = 0; 879 int dfifo, dbc, sstat1; 880 881 dfifo = rp->siop_dfifo; 882 dbc = rp->siop_dbc0; 883 sstat1 = rp->siop_sstat1; 884 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 885 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 886 ; 887 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 888 #ifdef DEBUG 889 ++siopints; 890 #if 0 891 if (siop_debug & 0x100) { 892 DCIAS(&acb->stat[0]); /* XXX */ 893 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 894 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 895 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 896 acb->msg[0], acb->msg[1], acb->msg[2], 897 acb->msg[3], acb->msg[4], acb->msg[5]); 898 } 899 #endif 900 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 901 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 902 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 903 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 904 sc->sc_scriptspa + sizeof(scripts)); 905 printf(" istat %x dstat %x sstat0 %x\n", 906 istat, dstat, sstat0); 907 Debugger(); 908 } 909 #endif 910 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 911 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 912 /* Normal completion status, or check condition */ 913 #ifdef DEBUG 914 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 915 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 916 kvtop((caddr_t)&acb->ds)); 917 panic("*** siop DSA invalid ***"); 918 } 919 #endif 920 target = acb->xs->sc_link->target; 921 if (sc->sc_sync[target].state == SYNC_SENT) { 922 #ifdef DEBUG 923 if (siopsync_debug) 924 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 925 acb->msg[0], acb->msg[1], acb->msg[2], 926 acb->msg[3], acb->msg[4], acb->msg[5]); 927 #endif 928 if (acb->msg[1] == 0xff) 929 printf ("%s: target %d ignored sync request\n", 930 sc->sc_dev.dv_xname, target); 931 else if (acb->msg[1] == MSG_REJECT) 932 printf ("%s: target %d rejected sync request\n", 933 sc->sc_dev.dv_xname, target); 934 sc->sc_sync[target].state = SYNC_DONE; 935 sc->sc_sync[target].sxfer = 0; 936 sc->sc_sync[target].sbcl = 0; 937 if (acb->msg[2] == 3 && 938 acb->msg[3] == MSG_SYNC_REQ && 939 acb->msg[5] != 0) { 940 #ifdef MAXTOR_KLUDGE 941 /* 942 * Kludge for my Maxtor XT8580S 943 * It accepts whatever we request, even 944 * though it won't work. So we ask for 945 * a short period than we can handle. If 946 * the device says it can do it, use 208ns. 947 * If the device says it can do less than 948 * 100ns, then we limit it to 100ns. 949 */ 950 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 951 #ifdef DEBUG 952 printf ("%d: target %d wanted %dns period\n", 953 sc->sc_dev.dv_xname, target, 954 acb->msg[4] * 4); 955 #endif 956 if (acb->msg[4] == 50 / 4) 957 acb->msg[4] = 208 / 4; 958 else 959 acb->msg[4] = 100 / 4; 960 } 961 #endif /* MAXTOR_KLUDGE */ 962 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 963 sc->sc_dev.dv_xname, target, 964 acb->msg[4] * 4, acb->msg[5]); 965 scsi_period_to_siop (sc, target); 966 } 967 } 968 dma_cachectl(&acb->stat[0], 1); 969 *status = acb->stat[0]; 970 #ifdef DEBUG 971 if (rp->siop_sbcl & SIOP_BSY) { 972 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 973 rp, &scripts, &acb->ds);*/ 974 #ifdef DDB 975 /*Debugger();*/ 976 #endif 977 } 978 if (acb->msg[0] != 0x00) 979 printf("%s: message was not COMMAND COMPLETE: %x\n", 980 sc->sc_dev.dv_xname, acb->msg[0]); 981 #endif 982 if (sc->nexus_list.tqh_first) 983 rp->siop_dcntl |= SIOP_DCNTL_STD; 984 return 1; 985 } 986 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 987 #ifdef DEBUG 988 ++siopphmm; 989 if (acb == NULL) 990 printf("%s: Phase mismatch with no active command?\n", 991 sc->sc_dev.dv_xname); 992 #endif 993 if (acb->iob_len) { 994 int adjust; 995 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 996 if (sstat1 & SIOP_SSTAT1_ORF) 997 ++adjust; 998 if (sstat1 & SIOP_SSTAT1_OLF) 999 ++adjust; 1000 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1001 acb->iob_curlen += adjust; 1002 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1003 #ifdef DEBUG 1004 if (siop_debug & 0x100) { 1005 int i; 1006 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1007 acb->iob_curbuf, acb->iob_curlen, dfifo, 1008 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1009 if (acb->ds.chain[1].datalen) { 1010 for (i = 0; acb->ds.chain[i].datalen; ++i) 1011 printf("chain[%d] addr %p len %lx\n", 1012 i, acb->ds.chain[i].databuf, 1013 acb->ds.chain[i].datalen); 1014 } 1015 } 1016 #endif 1017 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1018 } 1019 #ifdef DEBUG 1020 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1021 if (siop_debug & 9) 1022 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1023 rp->siop_sbcl, 1024 rp->siop_dsp - sc->sc_scriptspa, 1025 *((long *)&rp->siop_dcmd)); 1026 #endif 1027 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1028 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1029 rp->siop_sbcl, rp->siop_dsp); 1030 #ifdef DEBUG 1031 Debugger(); 1032 #endif 1033 } 1034 switch (rp->siop_sbcl & 7) { 1035 case 0: /* data out */ 1036 case 1: /* data in */ 1037 case 2: /* status */ 1038 case 3: /* command */ 1039 case 6: /* message in */ 1040 case 7: /* message out */ 1041 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1042 break; 1043 default: 1044 goto bad_phase; 1045 } 1046 return 0; 1047 } 1048 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1049 #ifdef DEBUG 1050 if (acb == NULL) 1051 printf("%s: Select timeout with no active command?\n", 1052 sc->sc_dev.dv_xname); 1053 if (rp->siop_sbcl & SIOP_BSY) { 1054 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1055 rp, &scripts, &acb->ds); 1056 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1057 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1058 if (!(rp->siop_sbcl & SIOP_BSY)) { 1059 printf ("Yikes, it's not busy now!\n"); 1060 #if 0 1061 *status = -1; 1062 if (sc->nexus_list.tqh_first) 1063 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1064 return 1; 1065 #endif 1066 } 1067 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1068 return (0); 1069 #ifdef DDB 1070 Debugger(); 1071 #endif 1072 } 1073 #endif 1074 *status = -1; 1075 acb->xs->error = XS_SELTIMEOUT; 1076 if (sc->nexus_list.tqh_first) 1077 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1078 return 1; 1079 } 1080 if (acb) 1081 target = acb->xs->sc_link->target; 1082 else 1083 target = 7; 1084 if (sstat0 & SIOP_SSTAT0_UDC) { 1085 #ifdef DEBUG 1086 if (acb == NULL) 1087 printf("%s: Unexpected disconnect with no active command?\n", 1088 sc->sc_dev.dv_xname); 1089 printf ("%s: target %d disconnected unexpectedly\n", 1090 sc->sc_dev.dv_xname, target); 1091 #endif 1092 #if 0 1093 siopabort (sc, rp, "siopchkintr"); 1094 #endif 1095 *status = STS_BUSY; 1096 if (sc->nexus_list.tqh_first) 1097 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1098 return (acb != NULL); 1099 } 1100 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1101 rp->siop_dsps == 0xff02)) { 1102 #ifdef DEBUG 1103 if (siop_debug & 0x100) 1104 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", 1105 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1106 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1107 acb->iob_curbuf, acb->iob_curlen, 1108 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1109 #endif 1110 if (acb == NULL) { 1111 printf("%s: Disconnect with no active command?\n", 1112 sc->sc_dev.dv_xname); 1113 return (0); 1114 } 1115 /* 1116 * XXXX need to update iob_curbuf/iob_curlen to reflect 1117 * current data transferred. If device disconnected in 1118 * the middle of a DMA block, they should already be set 1119 * by the phase change interrupt. If the disconnect 1120 * occurs on a DMA block boundary, we have to figure out 1121 * which DMA block it was. 1122 */ 1123 if (acb->iob_len && rp->siop_temp) { 1124 int n = rp->siop_temp - sc->sc_scriptspa; 1125 1126 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1127 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1128 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1129 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1130 if (n < Ent_datain) 1131 n = (n - Ent_dataout) / 16; 1132 else 1133 n = (n - Ent_datain) / 16; 1134 if (n <= 0 && n > DMAMAXIO) 1135 printf("TEMP invalid %d\n", n); 1136 else { 1137 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1138 acb->iob_curlen = acb->ds.chain[n].datalen; 1139 } 1140 #ifdef DEBUG 1141 if (siop_debug & 0x100) { 1142 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1143 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1144 acb->iob_curlen); 1145 } 1146 #endif 1147 } 1148 /* 1149 * If data transfer was interrupted by disconnect, iob_curbuf 1150 * and iob_curlen should reflect the point of interruption. 1151 * Adjust the DMA chain so that the data transfer begins 1152 * at the appropriate place upon reselection. 1153 * XXX This should only be done on save data pointer message? 1154 */ 1155 if (acb->iob_curlen) { 1156 int i, j; 1157 1158 #ifdef DEBUG 1159 if (siop_debug & 0x100) 1160 printf ("%s: adjusting DMA chain\n", 1161 sc->sc_dev.dv_xname); 1162 if (rp->siop_dsps == 0xff02) 1163 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1164 sc->sc_dev.dv_xname, 1 << target); 1165 #endif 1166 for (i = 0; i < DMAMAXIO; ++i) { 1167 if (acb->ds.chain[i].datalen == 0) 1168 break; 1169 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1170 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1171 acb->ds.chain[i].datalen)) 1172 break; 1173 } 1174 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1175 printf("couldn't find saved data pointer: "); 1176 printf("curbuf %lx curlen %lx i %d\n", 1177 acb->iob_curbuf, acb->iob_curlen, i); 1178 #ifdef DDB 1179 Debugger(); 1180 #endif 1181 } 1182 #ifdef DEBUG 1183 if (siop_debug & 0x100) 1184 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1185 acb->ds.chain[0].databuf, 1186 acb->ds.chain[0].datalen, 1187 acb->iob_curbuf, 1188 acb->iob_curlen); 1189 #endif 1190 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1191 acb->ds.chain[0].datalen = acb->iob_curlen; 1192 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1193 #ifdef DEBUG 1194 if (siop_debug & 0x100) 1195 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1196 acb->ds.chain[j].databuf, 1197 acb->ds.chain[j].datalen, 1198 acb->ds.chain[i].databuf, 1199 acb->ds.chain[i].datalen); 1200 #endif 1201 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1202 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1203 } 1204 if (j < DMAMAXIO) 1205 acb->ds.chain[j].datalen = 0; 1206 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1207 } 1208 ++sc->sc_tinfo[target].dconns; 1209 /* 1210 * add nexus to waiting list 1211 * clear nexus 1212 * try to start another command for another target/lun 1213 */ 1214 acb->status = sc->sc_flags & SIOP_INTSOFF; 1215 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1216 sc->sc_nexus = NULL; /* no current device */ 1217 /* start script to wait for reselect */ 1218 if (sc->sc_nexus == NULL) 1219 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1220 /* XXXX start another command ? */ 1221 if (sc->ready_list.tqh_first) 1222 siop_sched(sc); 1223 return (0); 1224 } 1225 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1226 int reselid = rp->siop_scratch & 0x7f; 1227 int reselun = rp->siop_sfbr & 0x07; 1228 1229 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1230 #ifdef DEBUG 1231 if (siop_debug & 0x100) 1232 printf ("%s: target ID %02x reselected dsps %lx\n", 1233 sc->sc_dev.dv_xname, reselid, 1234 rp->siop_dsps); 1235 if ((rp->siop_sfbr & 0x80) == 0) 1236 printf("%s: Reselect message in was not identify: %x\n", 1237 sc->sc_dev.dv_xname, rp->siop_sfbr); 1238 #endif 1239 if (sc->sc_nexus) { 1240 #ifdef DEBUG 1241 if (siop_debug & 0x100) 1242 printf ("%s: reselect ID %02x w/active\n", 1243 sc->sc_dev.dv_xname, reselid); 1244 #endif 1245 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1246 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->target].lubusy 1247 &= ~(1 << sc->sc_nexus->xs->sc_link->lun); 1248 --sc->sc_active; 1249 } 1250 /* 1251 * locate acb of reselecting device 1252 * set sc->sc_nexus to acb 1253 */ 1254 for (acb = sc->nexus_list.tqh_first; acb; 1255 acb = acb->chain.tqe_next) { 1256 if (reselid != (acb->ds.scsi_addr >> 16) || 1257 reselun != (acb->msgout[0] & 0x07)) 1258 continue; 1259 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1260 sc->sc_nexus = acb; 1261 sc->sc_flags |= acb->status; 1262 acb->status = 0; 1263 DCIAS(kvtop(&acb->stat[0])); 1264 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1265 rp->siop_sxfer = sc->sc_sync[acb->xs->sc_link->target].sxfer; 1266 rp->siop_sbcl = sc->sc_sync[acb->xs->sc_link->target].sbcl; 1267 break; 1268 } 1269 if (acb == NULL) { 1270 printf("%s: target ID %02x reselect nexus_list %p\n", 1271 sc->sc_dev.dv_xname, reselid, 1272 sc->nexus_list.tqh_first); 1273 panic("unable to find reselecting device"); 1274 } 1275 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1276 rp->siop_temp = 0; 1277 rp->siop_dcntl |= SIOP_DCNTL_STD; 1278 return (0); 1279 } 1280 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1281 #ifdef DEBUG 1282 u_short ctest2 = rp->siop_ctest2; 1283 1284 /* reselect was interrupted (by Sig_P or select) */ 1285 if (siop_debug & 0x100 || 1286 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1287 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1288 sc->sc_dev.dv_xname, rp->siop_scntl1, 1289 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1290 #endif 1291 /* XXX assumes it was not select */ 1292 if (sc->sc_nexus == NULL) { 1293 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1294 sc->sc_dev.dv_xname); 1295 #if 0 1296 siop_dump(sc); 1297 #ifdef DDB 1298 Debugger(); 1299 #endif 1300 #endif 1301 rp->siop_dcntl |= SIOP_DCNTL_STD; 1302 return(0); 1303 } 1304 target = sc->sc_nexus->xs->sc_link->target; 1305 rp->siop_temp = 0; 1306 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1307 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1308 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1309 rp->siop_dsp = sc->sc_scriptspa; 1310 return (0); 1311 } 1312 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1313 if (acb == NULL) 1314 printf("%s: Bad message-in with no active command?\n", 1315 sc->sc_dev.dv_xname); 1316 /* Unrecognized message in byte */ 1317 dma_cachectl (&acb->msg[1],1); 1318 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1319 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1320 /* what should be done here? */ 1321 DCIAS(kvtop(&acb->msg[1])); 1322 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1323 return (0); 1324 } 1325 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1326 /* Status phase wasn't followed by message in phase? */ 1327 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1328 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1329 if (rp->siop_sbcl == 0xa7) { 1330 /* It is now, just continue the script? */ 1331 rp->siop_dcntl |= SIOP_DCNTL_STD; 1332 return (0); 1333 } 1334 } 1335 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1336 dma_cachectl (&acb->stat[0], 1); 1337 dma_cachectl (&acb->msg[0], 1); 1338 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1339 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1340 rp->siop_sbcl); 1341 siopreset (sc); 1342 *status = -1; 1343 return 0; /* siopreset has cleaned up */ 1344 } 1345 if (sstat0 & SIOP_SSTAT0_SGE) 1346 printf ("SIOP: SCSI Gross Error\n"); 1347 if (sstat0 & SIOP_SSTAT0_PAR) 1348 printf ("SIOP: Parity Error\n"); 1349 if (dstat & SIOP_DSTAT_IID) 1350 printf ("SIOP: Invalid instruction detected\n"); 1351 bad_phase: 1352 /* 1353 * temporary panic for unhandled conditions 1354 * displays various things about the 53C710 status and registers 1355 * then panics. 1356 * XXXX need to clean this up to print out the info, reset, and continue 1357 */ 1358 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1359 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1360 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1361 *((long *)&rp->siop_dcmd)); 1362 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1363 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1364 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1365 #ifdef DEBUG 1366 if (siop_debug & 0x20) 1367 panic("siopchkintr: **** temp ****"); 1368 #endif 1369 #ifdef DDB 1370 Debugger (); 1371 #endif 1372 siopreset (sc); /* hard reset */ 1373 *status = -1; 1374 return 0; /* siopreset cleaned up */ 1375 } 1376 1377 void 1378 siop_select(sc) 1379 struct siop_softc *sc; 1380 { 1381 siop_regmap_p rp; 1382 struct siop_acb *acb = sc->sc_nexus; 1383 1384 #ifdef DEBUG 1385 if (siop_debug & 1) 1386 printf ("%s: select ", sc->sc_dev.dv_xname); 1387 #endif 1388 1389 rp = sc->sc_siopp; 1390 if (acb->xs->flags & SCSI_POLL || siop_no_dma) { 1391 sc->sc_flags |= SIOP_INTSOFF; 1392 sc->sc_flags &= ~SIOP_INTDEFER; 1393 if ((rp->siop_istat & 0x08) == 0) { 1394 rp->siop_sien = 0; 1395 rp->siop_dien = 0; 1396 } 1397 #if 0 1398 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1399 sc->sc_flags &= ~SIOP_INTSOFF; 1400 if ((rp->siop_istat & 0x08) == 0) { 1401 rp->siop_sien = sc->sc_sien; 1402 rp->siop_dien = sc->sc_dien; 1403 } 1404 #endif 1405 } 1406 #ifdef DEBUG 1407 if (siop_debug & 1) 1408 printf ("siop_select: target %x cmd %02x ds %p\n", 1409 acb->xs->sc_link->target, acb->cmd.opcode, 1410 &sc->sc_nexus->ds); 1411 #endif 1412 1413 siop_start(sc, acb->xs->sc_link->target, acb->xs->sc_link->lun, 1414 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1415 1416 return; 1417 } 1418 1419 /* 1420 * 53C710 interrupt handler 1421 */ 1422 1423 void 1424 siopintr (sc) 1425 register struct siop_softc *sc; 1426 { 1427 siop_regmap_p rp; 1428 register u_char istat, dstat, sstat0; 1429 int status; 1430 int s = splbio(); 1431 1432 istat = sc->sc_istat; 1433 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1434 splx(s); 1435 return; 1436 } 1437 1438 /* Got a valid interrupt on this device */ 1439 rp = sc->sc_siopp; 1440 dstat = sc->sc_dstat; 1441 sstat0 = sc->sc_sstat0; 1442 if (dstat & SIOP_DSTAT_SIR) 1443 sc->sc_intcode = rp->siop_dsps; 1444 sc->sc_istat = 0; 1445 #ifdef DEBUG 1446 if (siop_debug & 1) 1447 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1448 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1449 if (!sc->sc_active) { 1450 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1451 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1452 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1453 } 1454 #endif 1455 1456 #ifdef DEBUG 1457 if (siop_debug & 5) { 1458 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1459 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1460 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1461 rp->siop_dsps, rp->siop_sbcl, 1462 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1463 } 1464 #endif 1465 if (sc->sc_flags & SIOP_INTDEFER) { 1466 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1467 rp->siop_sien = sc->sc_sien; 1468 rp->siop_dien = sc->sc_dien; 1469 } 1470 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1471 #if 1 1472 if (status == 0xff) 1473 printf ("siopintr: status == 0xff\n"); 1474 #endif 1475 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1476 #if 0 1477 if (rp->siop_sbcl & SIOP_BSY) { 1478 printf ("%s: SCSI bus busy at completion", 1479 sc->sc_dev.dv_xname); 1480 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1481 sc->sc_nexus->xs->sc_link->target, 1482 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1483 rp->siop_dsp - sc->sc_scriptspa); 1484 } 1485 #endif 1486 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1487 sc->sc_nexus->stat[0] : -1); 1488 } 1489 } 1490 splx(s); 1491 } 1492 1493 /* 1494 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1495 * not be correct for other 53c710 boards. 1496 * 1497 */ 1498 void 1499 scsi_period_to_siop (sc, target) 1500 struct siop_softc *sc; 1501 int target; 1502 { 1503 int period, offset, sxfer, sbcl = 0; 1504 #ifdef DEBUG_SYNC 1505 int i; 1506 #endif 1507 1508 period = sc->sc_nexus->msg[4]; 1509 offset = sc->sc_nexus->msg[5]; 1510 #ifdef DEBUG_SYNC 1511 sxfer = 0; 1512 if (offset <= SIOP_MAX_OFFSET) 1513 sxfer = offset; 1514 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1515 if (period <= sync_tab[i].p) { 1516 sxfer |= sync_tab[i].r & 0x70; 1517 sbcl = sync_tab[i].r & 0x03; 1518 break; 1519 } 1520 } 1521 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1522 #endif 1523 for (sbcl = 1; sbcl < 4; ++sbcl) { 1524 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1525 if (sxfer >= 0 && sxfer <= 7) 1526 break; 1527 } 1528 if (sbcl > 3) { 1529 printf("siop sync: unable to compute sync params for period %dns\n", 1530 period * 4); 1531 /* 1532 * XXX need to pick a value we can do and renegotiate 1533 */ 1534 sxfer = sbcl = 0; 1535 } else { 1536 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1537 offset : SIOP_MAX_OFFSET); 1538 #ifdef DEBUG_SYNC 1539 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1540 period * 4, sxfer, sbcl); 1541 printf(" actual period %dns\n", 1542 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1543 #endif 1544 } 1545 sc->sc_sync[target].sxfer = sxfer; 1546 sc->sc_sync[target].sbcl = sbcl; 1547 #ifdef DEBUG_SYNC 1548 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1549 #endif 1550 } 1551 1552 #ifdef DEBUG 1553 1554 #if SIOP_TRACE_SIZE 1555 void 1556 siop_dump_trace() 1557 { 1558 int i; 1559 1560 printf("siop trace: next index %d\n", siop_trix); 1561 i = siop_trix; 1562 do { 1563 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1564 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1565 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1566 } while (i != siop_trix); 1567 } 1568 #endif 1569 1570 void 1571 siop_dump_acb(acb) 1572 struct siop_acb *acb; 1573 { 1574 u_char *b = (u_char *) &acb->cmd; 1575 int i; 1576 1577 printf("acb@%p ", acb); 1578 if (acb->xs == NULL) { 1579 printf("<unused>\n"); 1580 return; 1581 } 1582 printf("(%d:%d) flags %2x clen %2d cmd ", acb->xs->sc_link->target, 1583 acb->xs->sc_link->lun, acb->flags, acb->clen); 1584 for (i = acb->clen; i; --i) 1585 printf(" %02x", *b++); 1586 printf("\n"); 1587 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1588 acb->xs->datalen); 1589 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1590 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1591 } 1592 1593 void 1594 siop_dump(sc) 1595 struct siop_softc *sc; 1596 { 1597 struct siop_acb *acb; 1598 siop_regmap_p rp = sc->sc_siopp; 1599 int s; 1600 int i; 1601 1602 s = splbio(); 1603 #if SIOP_TRACE_SIZE 1604 siop_dump_trace(); 1605 #endif 1606 printf("%s@%p regs %p istat %x\n", 1607 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1608 if ((acb = sc->free_list.tqh_first) > 0) { 1609 printf("Free list:\n"); 1610 while (acb) { 1611 siop_dump_acb(acb); 1612 acb = acb->chain.tqe_next; 1613 } 1614 } 1615 if ((acb = sc->ready_list.tqh_first) > 0) { 1616 printf("Ready list:\n"); 1617 while (acb) { 1618 siop_dump_acb(acb); 1619 acb = acb->chain.tqe_next; 1620 } 1621 } 1622 if ((acb = sc->nexus_list.tqh_first) > 0) { 1623 printf("Nexus list:\n"); 1624 while (acb) { 1625 siop_dump_acb(acb); 1626 acb = acb->chain.tqe_next; 1627 } 1628 } 1629 if (sc->sc_nexus) { 1630 printf("Nexus:\n"); 1631 siop_dump_acb(sc->sc_nexus); 1632 } 1633 for (i = 0; i < 8; ++i) { 1634 if (sc->sc_tinfo[i].cmds > 2) { 1635 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1636 i, sc->sc_tinfo[i].cmds, 1637 sc->sc_tinfo[i].dconns, 1638 sc->sc_tinfo[i].senses, 1639 sc->sc_tinfo[i].lubusy); 1640 } 1641 } 1642 splx(s); 1643 } 1644 #endif 1645
Indexes created Fri Sep 26 20:09:58 GMT 2025