siop.c revision 1.37
1 /* $NetBSD: siop.c,v 1.37 1997/08/27 11:23:21 bouyer 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 <dev/scsipi/scsi_all.h> 54 #include <dev/scsipi/scsipi_all.h> 55 #include <dev/scsipi/scsiconf.h> 56 #include <machine/cpu.h> 57 #include <amiga/amiga/custom.h> 58 #include <amiga/amiga/isr.h> 59 #include <amiga/dev/siopreg.h> 60 #include <amiga/dev/siopvar.h> 61 62 /* 63 * SCSI delays 64 * In u-seconds, primarily for state changes on the SPC. 65 */ 66 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 67 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 68 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 69 70 void siop_select __P((struct siop_softc *)); 71 void siopabort __P((struct siop_softc *, siop_regmap_p, char *)); 72 void sioperror __P((struct siop_softc *, siop_regmap_p, u_char)); 73 void siopstart __P((struct siop_softc *)); 74 int siop_checkintr __P((struct siop_softc *, u_char, u_char, u_char, int *)); 75 void siopreset __P((struct siop_softc *)); 76 void siopsetdelay __P((int)); 77 void siop_scsidone __P((struct siop_acb *, int)); 78 void siop_sched __P((struct siop_softc *)); 79 int siop_poll __P((struct siop_softc *, struct siop_acb *)); 80 void siopintr __P((struct siop_softc *)); 81 void scsi_period_to_siop __P((struct siop_softc *, int)); 82 void siop_start __P((struct siop_softc *, int, int, u_char *, int, u_char *, int)); 83 void siop_dump_acb __P((struct siop_acb *)); 84 85 /* 53C710 script */ 86 const 87 #include <amiga/dev/siop_script.out> 88 89 /* default to not inhibit sync negotiation on any drive */ 90 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 91 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 92 int siop_no_dma = 0; 93 94 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 95 96 int siop_cmd_wait = SCSI_CMD_WAIT; 97 int siop_data_wait = SCSI_DATA_WAIT; 98 int siop_init_wait = SCSI_INIT_WAIT; 99 100 #ifdef DEBUG_SYNC 101 /* 102 * sync period transfer lookup - only valid for 66Mhz clock 103 */ 104 static struct { 105 unsigned char p; /* period from sync request message */ 106 unsigned char r; /* siop_period << 4 | sbcl */ 107 } sync_tab[] = { 108 { 60/4, 0<<4 | 1}, 109 { 76/4, 1<<4 | 1}, 110 { 92/4, 2<<4 | 1}, 111 { 92/4, 0<<4 | 2}, 112 {108/4, 3<<4 | 1}, 113 {116/4, 1<<4 | 2}, 114 {120/4, 4<<4 | 1}, 115 {120/4, 0<<4 | 3}, 116 {136/4, 5<<4 | 1}, 117 {140/4, 2<<4 | 2}, 118 {152/4, 6<<4 | 1}, 119 {152/4, 1<<4 | 3}, 120 {164/4, 3<<4 | 2}, 121 {168/4, 7<<4 | 1}, 122 {180/4, 2<<4 | 3}, 123 {184/4, 4<<4 | 2}, 124 {208/4, 5<<4 | 2}, 125 {212/4, 3<<4 | 3}, 126 {232/4, 6<<4 | 2}, 127 {240/4, 4<<4 | 3}, 128 {256/4, 7<<4 | 2}, 129 {272/4, 5<<4 | 3}, 130 {300/4, 6<<4 | 3}, 131 {332/4, 7<<4 | 3} 132 }; 133 #endif 134 135 #ifdef DEBUG 136 /* 137 * 0x01 - full debug 138 * 0x02 - DMA chaining 139 * 0x04 - siopintr 140 * 0x08 - phase mismatch 141 * 0x10 - <not used> 142 * 0x20 - panic on unhandled exceptions 143 * 0x100 - disconnect/reselect 144 */ 145 int siop_debug = 0; 146 int siopsync_debug = 0; 147 int siopdma_hits = 0; 148 int siopdma_misses = 0; 149 int siopchain_ints = 0; 150 int siopstarts = 0; 151 int siopints = 0; 152 int siopphmm = 0; 153 #define SIOP_TRACE_SIZE 128 154 #define SIOP_TRACE(a,b,c,d) \ 155 siop_trbuf[siop_trix] = (a); \ 156 siop_trbuf[siop_trix+1] = (b); \ 157 siop_trbuf[siop_trix+2] = (c); \ 158 siop_trbuf[siop_trix+3] = (d); \ 159 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 160 u_char siop_trbuf[SIOP_TRACE_SIZE]; 161 int siop_trix; 162 void siop_dump __P((struct siop_softc *)); 163 void siop_dump_trace __P((void)); 164 #else 165 #define SIOP_TRACE(a,b,c,d) 166 #endif 167 168 169 /* 170 * default minphys routine for siop based controllers 171 */ 172 void 173 siop_minphys(bp) 174 struct buf *bp; 175 { 176 177 /* 178 * No max transfer at this level. 179 */ 180 minphys(bp); 181 } 182 183 /* 184 * used by specific siop controller 185 * 186 */ 187 int 188 siop_scsicmd(xs) 189 struct scsipi_xfer *xs; 190 { 191 struct siop_acb *acb; 192 struct siop_softc *sc; 193 struct scsipi_link *slp; 194 int flags, s; 195 196 slp = xs->sc_link; 197 sc = slp->adapter_softc; 198 flags = xs->flags; 199 200 /* XXXX ?? */ 201 if (flags & SCSI_DATA_UIO) 202 panic("siop: scsi data uio requested"); 203 204 /* XXXX ?? */ 205 if (sc->sc_nexus && flags & SCSI_POLL) 206 /* panic("siop_scsicmd: busy");*/ 207 printf("siop_scsicmd: busy\n"); 208 209 s = splbio(); 210 acb = sc->free_list.tqh_first; 211 if (acb) { 212 TAILQ_REMOVE(&sc->free_list, acb, chain); 213 } 214 splx(s); 215 216 if (acb == NULL) { 217 xs->error = XS_DRIVER_STUFFUP; 218 return(TRY_AGAIN_LATER); 219 } 220 221 acb->flags = ACB_ACTIVE; 222 acb->xs = xs; 223 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 224 acb->clen = xs->cmdlen; 225 acb->daddr = xs->data; 226 acb->dleft = xs->datalen; 227 228 s = splbio(); 229 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 230 231 if (sc->sc_nexus == NULL) 232 siop_sched(sc); 233 234 splx(s); 235 236 if (flags & SCSI_POLL || siop_no_dma) 237 return(siop_poll(sc, acb)); 238 return(SUCCESSFULLY_QUEUED); 239 } 240 241 int 242 siop_poll(sc, acb) 243 struct siop_softc *sc; 244 struct siop_acb *acb; 245 { 246 siop_regmap_p rp = sc->sc_siopp; 247 struct scsipi_xfer *xs = acb->xs; 248 int i; 249 int status; 250 u_char istat; 251 u_char dstat; 252 u_char sstat0; 253 int s; 254 int to; 255 256 s = splbio(); 257 to = xs->timeout / 1000; 258 if (sc->nexus_list.tqh_first) 259 printf("%s: siop_poll called with disconnected device\n", 260 sc->sc_dev.dv_xname); 261 for (;;) { 262 /* use cmd_wait values? */ 263 i = 50000; 264 /* XXX spl0(); */ 265 while (((istat = rp->siop_istat) & 266 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 267 if (--i <= 0) { 268 #ifdef DEBUG 269 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 270 xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 271 rp->siop_sbcl, rp->siop_dsp, 272 rp->siop_dsp - sc->sc_scriptspa, 273 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 274 #endif 275 i = 50000; 276 --to; 277 if (to <= 0) { 278 siopreset(sc); 279 return(COMPLETE); 280 } 281 } 282 delay(10); 283 } 284 sstat0 = rp->siop_sstat0; 285 dstat = rp->siop_dstat; 286 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 287 if (acb != sc->sc_nexus) 288 printf("%s: siop_poll disconnected device completed\n", 289 sc->sc_dev.dv_xname); 290 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 291 sc->sc_flags &= ~SIOP_INTSOFF; 292 rp->siop_sien = sc->sc_sien; 293 rp->siop_dien = sc->sc_dien; 294 } 295 siop_scsidone(sc->sc_nexus, status); 296 } 297 if (xs->flags & ITSDONE) 298 break; 299 } 300 splx(s); 301 return (COMPLETE); 302 } 303 304 /* 305 * start next command that's ready 306 */ 307 void 308 siop_sched(sc) 309 struct siop_softc *sc; 310 { 311 struct scsipi_link *slp; 312 struct siop_acb *acb; 313 int i; 314 315 #ifdef DEBUG 316 if (sc->sc_nexus) { 317 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 318 sc->sc_dev.dv_xname, sc->sc_nexus, 319 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 320 sc->ready_list.tqh_first, 321 sc->ready_list.tqh_first->xs->sc_link->scsipi_scsi.target); 322 return; 323 } 324 #endif 325 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 326 slp = acb->xs->sc_link; 327 i = slp->scsipi_scsi.target; 328 if(!(sc->sc_tinfo[i].lubusy & (1 << slp->scsipi_scsi.lun))) { 329 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 330 331 TAILQ_REMOVE(&sc->ready_list, acb, chain); 332 sc->sc_nexus = acb; 333 slp = acb->xs->sc_link; 334 ti = &sc->sc_tinfo[slp->scsipi_scsi.target]; 335 ti->lubusy |= (1 << slp->scsipi_scsi.lun); 336 break; 337 } 338 } 339 340 if (acb == NULL) { 341 #ifdef DEBUGXXX 342 printf("%s: siop_sched didn't find ready command\n", 343 sc->sc_dev.dv_xname); 344 #endif 345 return; 346 } 347 348 if (acb->xs->flags & SCSI_RESET) 349 siopreset(sc); 350 351 #if 0 352 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 353 #endif 354 ++sc->sc_active; 355 siop_select(sc); 356 } 357 358 void 359 siop_scsidone(acb, stat) 360 struct siop_acb *acb; 361 int stat; 362 { 363 struct scsipi_xfer *xs; 364 struct scsipi_link *slp; 365 struct siop_softc *sc; 366 int dosched = 0; 367 368 if (acb == NULL || (xs = acb->xs) == NULL) { 369 #ifdef DIAGNOSTIC 370 printf("siop_scsidone: NULL acb or scsipi_xfer\n"); 371 #if defined(DEBUG) && defined(DDB) 372 Debugger(); 373 #endif 374 #endif 375 return; 376 } 377 slp = xs->sc_link; 378 sc = slp->adapter_softc; 379 /* 380 * is this right? 381 */ 382 xs->status = stat; 383 384 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 385 if (stat == SCSI_CHECK) { 386 struct scsipi_sense *ss = (void *)&acb->cmd; 387 bzero(ss, sizeof(*ss)); 388 ss->opcode = REQUEST_SENSE; 389 ss->byte2 = slp->scsipi_scsi.lun << 5; 390 ss->length = sizeof(struct scsipi_sense_data); 391 acb->clen = sizeof(*ss); 392 acb->daddr = (char *)&xs->sense.scsi_sense; 393 acb->dleft = sizeof(struct scsipi_sense_data); 394 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 395 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 396 --sc->sc_active; 397 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy &= 398 ~(1 << slp->scsipi_scsi.lun); 399 sc->sc_tinfo[slp->scsipi_scsi.target].senses++; 400 if (sc->sc_nexus == acb) { 401 sc->sc_nexus = NULL; 402 siop_sched(sc); 403 } 404 SIOP_TRACE('d','s',0,0) 405 return; 406 } 407 } 408 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 409 xs->error = XS_SENSE; 410 } else { 411 xs->resid = 0; /* XXXX */ 412 } 413 #if whataboutthisone 414 case SCSI_BUSY: 415 xs->error = XS_BUSY; 416 break; 417 #endif 418 xs->flags |= ITSDONE; 419 420 /* 421 * Remove the ACB from whatever queue it's on. We have to do a bit of 422 * a hack to figure out which queue it's on. Note that it is *not* 423 * necessary to cdr down the ready queue, but we must cdr down the 424 * nexus queue and see if it's there, so we can mark the unit as no 425 * longer busy. This code is sickening, but it works. 426 */ 427 if (acb == sc->sc_nexus) { 428 sc->sc_nexus = NULL; 429 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy &= 430 ~(1<<slp->scsipi_scsi.lun); 431 if (sc->ready_list.tqh_first) 432 dosched = 1; /* start next command */ 433 --sc->sc_active; 434 SIOP_TRACE('d','a',stat,0) 435 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 436 TAILQ_REMOVE(&sc->ready_list, acb, chain); 437 SIOP_TRACE('d','r',stat,0) 438 } else { 439 register struct siop_acb *acb2; 440 for (acb2 = sc->nexus_list.tqh_first; acb2; 441 acb2 = acb2->chain.tqe_next) 442 if (acb2 == acb) { 443 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 444 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy 445 &= ~(1<<slp->scsipi_scsi.lun); 446 --sc->sc_active; 447 break; 448 } 449 if (acb2) 450 ; 451 else if (acb->chain.tqe_next) { 452 TAILQ_REMOVE(&sc->ready_list, acb, chain); 453 --sc->sc_active; 454 } else { 455 printf("%s: can't find matching acb\n", 456 sc->sc_dev.dv_xname); 457 #ifdef DDB 458 /* Debugger(); */ 459 #endif 460 } 461 SIOP_TRACE('d','n',stat,0); 462 } 463 /* Put it on the free list. */ 464 acb->flags = ACB_FREE; 465 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 466 467 sc->sc_tinfo[slp->scsipi_scsi.target].cmds++; 468 469 scsipi_done(xs); 470 471 if (dosched && sc->sc_nexus == NULL) 472 siop_sched(sc); 473 } 474 475 void 476 siopabort(sc, rp, where) 477 register struct siop_softc *sc; 478 siop_regmap_p rp; 479 char *where; 480 { 481 #ifdef fix_this 482 int i; 483 #endif 484 485 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 486 sc->sc_dev.dv_xname, 487 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 488 489 if (sc->sc_active > 0) { 490 #ifdef TODO 491 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 492 WAIT_CIP (rp); 493 494 GET_SBIC_asr (rp, asr); 495 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 496 { 497 /* ok, get more drastic.. */ 498 499 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 500 delay(25); 501 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 502 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 503 504 return; 505 } 506 507 do 508 { 509 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 510 GET_SBIC_csr (rp, csr); 511 } 512 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 513 && (csr != SBIC_CSR_CMD_INVALID)); 514 #endif 515 516 /* lets just hope it worked.. */ 517 #ifdef fix_this 518 for (i = 0; i < 2; ++i) { 519 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 520 sc->sc_cur) { 521 printf ("siopabort: cleanup!\n"); 522 sc->sc_iob[i].sc_xs = NULL; 523 } 524 } 525 #endif /* fix_this */ 526 /* sc->sc_active = 0; */ 527 } 528 } 529 530 void 531 siopinitialize(sc) 532 struct siop_softc *sc; 533 { 534 int i; 535 u_int inhibit_sync; 536 extern u_long scsi_nosync; 537 extern int shift_nosync; 538 539 /* 540 * Need to check that scripts is on a long word boundary 541 * Also should verify that dev doesn't span non-contiguous 542 * physical pages. 543 */ 544 sc->sc_scriptspa = kvtop((caddr_t)scripts); 545 546 /* 547 * malloc sc_acb to ensure that DS is on a long word boundary. 548 */ 549 550 MALLOC(sc->sc_acb, struct siop_acb *, 551 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 552 if (sc->sc_acb == NULL) 553 panic("siopinitialize: ACB malloc failed!"); 554 555 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 556 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 557 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 558 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 559 if (sc->sc_minsync < 25) 560 sc->sc_minsync = 25; 561 if (sc->sc_clock_freq <= 25) { 562 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 563 sc->sc_tcp[0] = sc->sc_tcp[1]; 564 } else if (sc->sc_clock_freq <= 37) { 565 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 566 sc->sc_tcp[0] = sc->sc_tcp[2]; 567 } else if (sc->sc_clock_freq <= 50) { 568 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 569 sc->sc_tcp[0] = sc->sc_tcp[3]; 570 } else { 571 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 572 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 573 } 574 575 if (scsi_nosync) { 576 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 577 shift_nosync += 8; 578 #ifdef DEBUG 579 if (inhibit_sync) 580 printf("%s: Inhibiting synchronous transfer %02x\n", 581 sc->sc_dev.dv_xname, inhibit_sync); 582 #endif 583 for (i = 0; i < 8; ++i) 584 if (inhibit_sync & (1 << i)) 585 siop_inhibit_sync[i] = 1; 586 } 587 588 siopreset (sc); 589 } 590 591 void 592 siopreset(sc) 593 struct siop_softc *sc; 594 { 595 siop_regmap_p rp; 596 u_int i, s; 597 u_char dummy; 598 struct siop_acb *acb; 599 600 rp = sc->sc_siopp; 601 602 if (sc->sc_flags & SIOP_ALIVE) 603 siopabort(sc, rp, "reset"); 604 605 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 606 607 s = splbio(); 608 609 /* 610 * Reset the chip 611 * XXX - is this really needed? 612 */ 613 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 614 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 615 rp->siop_istat &= ~SIOP_ISTAT_RST; 616 /* 617 * Reset SCSI bus (do we really want this?) 618 */ 619 rp->siop_sien = 0; 620 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 621 delay(1); 622 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 623 624 /* 625 * Set up various chip parameters 626 */ 627 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 628 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 629 rp->siop_dcntl = sc->sc_dcntl; 630 rp->siop_dmode = 0x80; /* burst length = 4 */ 631 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 632 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 633 rp->siop_scid = 1 << sc->sc_link.scsipi_scsi.adapter_target; 634 rp->siop_dwt = 0x00; 635 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 636 rp->siop_ctest7 |= sc->sc_ctest7; 637 638 /* will need to re-negotiate sync xfers */ 639 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 640 641 i = rp->siop_istat; 642 if (i & SIOP_ISTAT_SIP) 643 dummy = rp->siop_sstat0; 644 if (i & SIOP_ISTAT_DIP) 645 dummy = rp->siop_dstat; 646 647 splx (s); 648 649 delay (siop_reset_delay * 1000); 650 printf("siop id %d reset V%d\n", sc->sc_link.scsipi_scsi.adapter_target, 651 rp->siop_ctest8 >> 4); 652 653 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 654 TAILQ_INIT(&sc->ready_list); 655 TAILQ_INIT(&sc->nexus_list); 656 TAILQ_INIT(&sc->free_list); 657 sc->sc_nexus = NULL; 658 acb = sc->sc_acb; 659 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 660 for (i = 0; i < SIOP_NACB; i++) { 661 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 662 acb++; 663 } 664 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 665 } else { 666 if (sc->sc_nexus != NULL) { 667 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 668 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 669 } 670 while ((acb = sc->nexus_list.tqh_first) > 0) { 671 acb->xs->error = XS_DRIVER_STUFFUP; 672 siop_scsidone(acb, acb->stat[0]); 673 } 674 } 675 676 sc->sc_flags |= SIOP_ALIVE; 677 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 678 /* enable SCSI and DMA interrupts */ 679 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 680 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 681 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 682 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 683 rp->siop_sien = sc->sc_sien; 684 rp->siop_dien = sc->sc_dien; 685 } 686 687 /* 688 * Setup Data Storage for 53C710 and start SCRIPTS processing 689 */ 690 691 void 692 siop_start (sc, target, lun, cbuf, clen, buf, len) 693 struct siop_softc *sc; 694 int target; 695 int lun; 696 u_char *cbuf; 697 int clen; 698 u_char *buf; 699 int len; 700 { 701 siop_regmap_p rp = sc->sc_siopp; 702 int nchain; 703 int count, tcount; 704 char *addr, *dmaend; 705 struct siop_acb *acb = sc->sc_nexus; 706 #ifdef DEBUG 707 int i; 708 #endif 709 710 #ifdef DEBUG 711 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 712 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 713 rp, &scripts, &acb->ds, sc->sc_active); 714 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 715 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 716 rp->siop_sien, rp->siop_dien); 717 #ifdef DDB 718 /*Debugger();*/ 719 #endif 720 } 721 #endif 722 acb->msgout[0] = MSG_IDENTIFY | lun; 723 if (siop_allow_disc[target] & 2 || 724 (siop_allow_disc[target] && len == 0)) 725 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 726 acb->status = 0; 727 acb->stat[0] = -1; 728 acb->msg[0] = -1; 729 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 730 acb->ds.idlen = 1; 731 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 732 acb->ds.cmdlen = clen; 733 acb->ds.cmdbuf = (char *) kvtop(cbuf); 734 acb->ds.stslen = 1; 735 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 736 acb->ds.msglen = 1; 737 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 738 acb->msg[1] = -1; 739 acb->ds.msginlen = 1; 740 acb->ds.extmsglen = 1; 741 acb->ds.synmsglen = 3; 742 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 743 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 744 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 745 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 746 747 if (sc->sc_sync[target].state == SYNC_START) { 748 if (siop_inhibit_sync[target]) { 749 sc->sc_sync[target].state = SYNC_DONE; 750 sc->sc_sync[target].sbcl = 0; 751 sc->sc_sync[target].sxfer = 0; 752 #ifdef DEBUG 753 if (siopsync_debug) 754 printf ("Forcing target %d asynchronous\n", target); 755 #endif 756 } 757 else { 758 acb->msg[2] = -1; 759 acb->msgout[1] = MSG_EXT_MESSAGE; 760 acb->msgout[2] = 3; 761 acb->msgout[3] = MSG_SYNC_REQ; 762 #ifdef MAXTOR_SYNC_KLUDGE 763 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 764 #else 765 acb->msgout[4] = sc->sc_minsync; 766 #endif 767 acb->msgout[5] = SIOP_MAX_OFFSET; 768 acb->ds.idlen = 6; 769 sc->sc_sync[target].state = SYNC_SENT; 770 #ifdef DEBUG 771 if (siopsync_debug) 772 printf ("Sending sync request to target %d\n", target); 773 #endif 774 } 775 } 776 777 /* 778 * Build physical DMA addresses for scatter/gather I/O 779 */ 780 acb->iob_buf = buf; 781 acb->iob_len = len; 782 acb->iob_curbuf = acb->iob_curlen = 0; 783 nchain = 0; 784 count = len; 785 addr = buf; 786 dmaend = NULL; 787 while (count > 0) { 788 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 789 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 790 tcount = count; 791 acb->ds.chain[nchain].datalen = tcount; 792 addr += tcount; 793 count -= tcount; 794 if (acb->ds.chain[nchain].databuf == dmaend) { 795 dmaend += acb->ds.chain[nchain].datalen; 796 acb->ds.chain[nchain].datalen = 0; 797 acb->ds.chain[--nchain].datalen += tcount; 798 #ifdef DEBUG 799 ++siopdma_hits; 800 #endif 801 } 802 else { 803 dmaend = acb->ds.chain[nchain].databuf + 804 acb->ds.chain[nchain].datalen; 805 acb->ds.chain[nchain].datalen = tcount; 806 #ifdef DEBUG 807 if (nchain) /* Don't count miss on first one */ 808 ++siopdma_misses; 809 #endif 810 } 811 ++nchain; 812 } 813 #ifdef DEBUG 814 if (nchain != 1 && len != 0 && siop_debug & 3) { 815 printf ("DMA chaining set: %d\n", nchain); 816 for (i = 0; i < nchain; ++i) { 817 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 818 acb->ds.chain[i].datalen); 819 } 820 } 821 #endif 822 823 /* push data cache for all data the 53c710 needs to access */ 824 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 825 dma_cachectl (cbuf, clen); 826 if (buf != NULL && len != 0) 827 dma_cachectl (buf, len); 828 #ifdef DEBUG 829 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 830 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 831 rp, &scripts, &acb->ds, sc->sc_active); 832 #ifdef DDB 833 /*Debugger();*/ 834 #endif 835 } 836 #endif 837 if (sc->nexus_list.tqh_first == NULL) { 838 if (rp->siop_istat & SIOP_ISTAT_CON) 839 printf("%s: siop_select while connected?\n", 840 sc->sc_dev.dv_xname); 841 rp->siop_temp = 0; 842 rp->siop_sbcl = sc->sc_sync[target].sbcl; 843 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 844 rp->siop_dsp = sc->sc_scriptspa; 845 SIOP_TRACE('s',1,0,0) 846 } else { 847 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 848 rp->siop_istat = SIOP_ISTAT_SIGP; 849 SIOP_TRACE('s',2,0,0); 850 } 851 else { 852 SIOP_TRACE('s',3,rp->siop_istat,0); 853 } 854 } 855 #ifdef DEBUG 856 ++siopstarts; 857 #endif 858 } 859 860 /* 861 * Process a DMA or SCSI interrupt from the 53C710 SIOP 862 */ 863 864 int 865 siop_checkintr(sc, istat, dstat, sstat0, status) 866 struct siop_softc *sc; 867 u_char istat; 868 u_char dstat; 869 u_char sstat0; 870 int *status; 871 { 872 siop_regmap_p rp = sc->sc_siopp; 873 struct siop_acb *acb = sc->sc_nexus; 874 int target = 0; 875 int dfifo, dbc, sstat1; 876 877 dfifo = rp->siop_dfifo; 878 dbc = rp->siop_dbc0; 879 sstat1 = rp->siop_sstat1; 880 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 881 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 882 ; 883 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 884 #ifdef DEBUG 885 ++siopints; 886 #if 0 887 if (siop_debug & 0x100) { 888 DCIAS(&acb->stat[0]); /* XXX */ 889 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 890 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 891 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 892 acb->msg[0], acb->msg[1], acb->msg[2], 893 acb->msg[3], acb->msg[4], acb->msg[5]); 894 } 895 #endif 896 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 897 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 898 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 899 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 900 sc->sc_scriptspa + sizeof(scripts)); 901 printf(" istat %x dstat %x sstat0 %x\n", 902 istat, dstat, sstat0); 903 #ifdef DDB 904 Debugger(); 905 #endif 906 } 907 #endif 908 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 909 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 910 /* Normal completion status, or check condition */ 911 #ifdef DEBUG 912 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 913 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 914 kvtop((caddr_t)&acb->ds)); 915 panic("*** siop DSA invalid ***"); 916 } 917 #endif 918 target = acb->xs->sc_link->scsipi_scsi.target; 919 if (sc->sc_sync[target].state == SYNC_SENT) { 920 #ifdef DEBUG 921 if (siopsync_debug) 922 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 923 acb->msg[0], acb->msg[1], acb->msg[2], 924 acb->msg[3], acb->msg[4], acb->msg[5]); 925 #endif 926 if (acb->msg[1] == 0xff) 927 printf ("%s: target %d ignored sync request\n", 928 sc->sc_dev.dv_xname, target); 929 else if (acb->msg[1] == MSG_REJECT) 930 printf ("%s: target %d rejected sync request\n", 931 sc->sc_dev.dv_xname, target); 932 sc->sc_sync[target].state = SYNC_DONE; 933 sc->sc_sync[target].sxfer = 0; 934 sc->sc_sync[target].sbcl = 0; 935 if (acb->msg[2] == 3 && 936 acb->msg[3] == MSG_SYNC_REQ && 937 acb->msg[5] != 0) { 938 #ifdef MAXTOR_KLUDGE 939 /* 940 * Kludge for my Maxtor XT8580S 941 * It accepts whatever we request, even 942 * though it won't work. So we ask for 943 * a short period than we can handle. If 944 * the device says it can do it, use 208ns. 945 * If the device says it can do less than 946 * 100ns, then we limit it to 100ns. 947 */ 948 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 949 #ifdef DEBUG 950 printf ("%d: target %d wanted %dns period\n", 951 sc->sc_dev.dv_xname, target, 952 acb->msg[4] * 4); 953 #endif 954 if (acb->msg[4] == 50 / 4) 955 acb->msg[4] = 208 / 4; 956 else 957 acb->msg[4] = 100 / 4; 958 } 959 #endif /* MAXTOR_KLUDGE */ 960 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 961 sc->sc_dev.dv_xname, target, 962 acb->msg[4] * 4, acb->msg[5]); 963 scsi_period_to_siop (sc, target); 964 } 965 } 966 dma_cachectl(&acb->stat[0], 1); 967 *status = acb->stat[0]; 968 #ifdef DEBUG 969 if (rp->siop_sbcl & SIOP_BSY) { 970 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 971 rp, &scripts, &acb->ds);*/ 972 #ifdef DDB 973 /*Debugger();*/ 974 #endif 975 } 976 if (acb->msg[0] != 0x00) 977 printf("%s: message was not COMMAND COMPLETE: %x\n", 978 sc->sc_dev.dv_xname, acb->msg[0]); 979 #endif 980 if (sc->nexus_list.tqh_first) 981 rp->siop_dcntl |= SIOP_DCNTL_STD; 982 return 1; 983 } 984 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 985 #ifdef DEBUG 986 ++siopphmm; 987 if (acb == NULL) 988 printf("%s: Phase mismatch with no active command?\n", 989 sc->sc_dev.dv_xname); 990 #endif 991 if (acb->iob_len) { 992 int adjust; 993 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 994 if (sstat1 & SIOP_SSTAT1_ORF) 995 ++adjust; 996 if (sstat1 & SIOP_SSTAT1_OLF) 997 ++adjust; 998 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 999 acb->iob_curlen += adjust; 1000 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1001 #ifdef DEBUG 1002 if (siop_debug & 0x100) { 1003 int i; 1004 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1005 acb->iob_curbuf, acb->iob_curlen, dfifo, 1006 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1007 if (acb->ds.chain[1].datalen) { 1008 for (i = 0; acb->ds.chain[i].datalen; ++i) 1009 printf("chain[%d] addr %p len %lx\n", 1010 i, acb->ds.chain[i].databuf, 1011 acb->ds.chain[i].datalen); 1012 } 1013 } 1014 #endif 1015 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1016 } 1017 #ifdef DEBUG 1018 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1019 if (siop_debug & 9) 1020 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1021 rp->siop_sbcl, 1022 rp->siop_dsp - sc->sc_scriptspa, 1023 *((long *)&rp->siop_dcmd)); 1024 #endif 1025 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1026 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1027 rp->siop_sbcl, rp->siop_dsp); 1028 #if defined(DEBUG) && defined(DDB) 1029 Debugger(); 1030 #endif 1031 } 1032 switch (rp->siop_sbcl & 7) { 1033 case 0: /* data out */ 1034 case 1: /* data in */ 1035 case 2: /* status */ 1036 case 3: /* command */ 1037 case 6: /* message in */ 1038 case 7: /* message out */ 1039 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1040 break; 1041 default: 1042 goto bad_phase; 1043 } 1044 return 0; 1045 } 1046 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1047 #ifdef DEBUG 1048 if (acb == NULL) 1049 printf("%s: Select timeout with no active command?\n", 1050 sc->sc_dev.dv_xname); 1051 if (rp->siop_sbcl & SIOP_BSY) { 1052 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1053 rp, &scripts, &acb->ds); 1054 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1055 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1056 if (!(rp->siop_sbcl & SIOP_BSY)) { 1057 printf ("Yikes, it's not busy now!\n"); 1058 #if 0 1059 *status = -1; 1060 if (sc->nexus_list.tqh_first) 1061 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1062 return 1; 1063 #endif 1064 } 1065 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1066 return (0); 1067 #ifdef DDB 1068 Debugger(); 1069 #endif 1070 } 1071 #endif 1072 *status = -1; 1073 acb->xs->error = XS_SELTIMEOUT; 1074 if (sc->nexus_list.tqh_first) 1075 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1076 return 1; 1077 } 1078 if (acb) 1079 target = acb->xs->sc_link->scsipi_scsi.target; 1080 else 1081 target = 7; 1082 if (sstat0 & SIOP_SSTAT0_UDC) { 1083 #ifdef DEBUG 1084 if (acb == NULL) 1085 printf("%s: Unexpected disconnect with no active command?\n", 1086 sc->sc_dev.dv_xname); 1087 printf ("%s: target %d disconnected unexpectedly\n", 1088 sc->sc_dev.dv_xname, target); 1089 #endif 1090 #if 0 1091 siopabort (sc, rp, "siopchkintr"); 1092 #endif 1093 *status = STS_BUSY; 1094 if (sc->nexus_list.tqh_first) 1095 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1096 return (acb != NULL); 1097 } 1098 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1099 rp->siop_dsps == 0xff02)) { 1100 #ifdef DEBUG 1101 if (siop_debug & 0x100) 1102 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", 1103 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1104 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1105 acb->iob_curbuf, acb->iob_curlen, 1106 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1107 #endif 1108 if (acb == NULL) { 1109 printf("%s: Disconnect with no active command?\n", 1110 sc->sc_dev.dv_xname); 1111 return (0); 1112 } 1113 /* 1114 * XXXX need to update iob_curbuf/iob_curlen to reflect 1115 * current data transferred. If device disconnected in 1116 * the middle of a DMA block, they should already be set 1117 * by the phase change interrupt. If the disconnect 1118 * occurs on a DMA block boundary, we have to figure out 1119 * which DMA block it was. 1120 */ 1121 if (acb->iob_len && rp->siop_temp) { 1122 int n = rp->siop_temp - sc->sc_scriptspa; 1123 1124 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1125 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1126 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1127 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1128 if (n < Ent_datain) 1129 n = (n - Ent_dataout) / 16; 1130 else 1131 n = (n - Ent_datain) / 16; 1132 if (n <= 0 && n > DMAMAXIO) 1133 printf("TEMP invalid %d\n", n); 1134 else { 1135 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1136 acb->iob_curlen = acb->ds.chain[n].datalen; 1137 } 1138 #ifdef DEBUG 1139 if (siop_debug & 0x100) { 1140 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1141 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1142 acb->iob_curlen); 1143 } 1144 #endif 1145 } 1146 /* 1147 * If data transfer was interrupted by disconnect, iob_curbuf 1148 * and iob_curlen should reflect the point of interruption. 1149 * Adjust the DMA chain so that the data transfer begins 1150 * at the appropriate place upon reselection. 1151 * XXX This should only be done on save data pointer message? 1152 */ 1153 if (acb->iob_curlen) { 1154 int i, j; 1155 1156 #ifdef DEBUG 1157 if (siop_debug & 0x100) 1158 printf ("%s: adjusting DMA chain\n", 1159 sc->sc_dev.dv_xname); 1160 if (rp->siop_dsps == 0xff02) 1161 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1162 sc->sc_dev.dv_xname, 1 << target); 1163 #endif 1164 for (i = 0; i < DMAMAXIO; ++i) { 1165 if (acb->ds.chain[i].datalen == 0) 1166 break; 1167 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1168 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1169 acb->ds.chain[i].datalen)) 1170 break; 1171 } 1172 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1173 printf("couldn't find saved data pointer: "); 1174 printf("curbuf %lx curlen %lx i %d\n", 1175 acb->iob_curbuf, acb->iob_curlen, i); 1176 #ifdef DDB 1177 Debugger(); 1178 #endif 1179 } 1180 #ifdef DEBUG 1181 if (siop_debug & 0x100) 1182 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1183 acb->ds.chain[0].databuf, 1184 acb->ds.chain[0].datalen, 1185 acb->iob_curbuf, 1186 acb->iob_curlen); 1187 #endif 1188 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1189 acb->ds.chain[0].datalen = acb->iob_curlen; 1190 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1191 #ifdef DEBUG 1192 if (siop_debug & 0x100) 1193 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1194 acb->ds.chain[j].databuf, 1195 acb->ds.chain[j].datalen, 1196 acb->ds.chain[i].databuf, 1197 acb->ds.chain[i].datalen); 1198 #endif 1199 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1200 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1201 } 1202 if (j < DMAMAXIO) 1203 acb->ds.chain[j].datalen = 0; 1204 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1205 } 1206 ++sc->sc_tinfo[target].dconns; 1207 /* 1208 * add nexus to waiting list 1209 * clear nexus 1210 * try to start another command for another target/lun 1211 */ 1212 acb->status = sc->sc_flags & SIOP_INTSOFF; 1213 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1214 sc->sc_nexus = NULL; /* no current device */ 1215 /* start script to wait for reselect */ 1216 if (sc->sc_nexus == NULL) 1217 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1218 /* XXXX start another command ? */ 1219 if (sc->ready_list.tqh_first) 1220 siop_sched(sc); 1221 return (0); 1222 } 1223 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1224 int reselid = rp->siop_scratch & 0x7f; 1225 int reselun = rp->siop_sfbr & 0x07; 1226 1227 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1228 #ifdef DEBUG 1229 if (siop_debug & 0x100) 1230 printf ("%s: target ID %02x reselected dsps %lx\n", 1231 sc->sc_dev.dv_xname, reselid, 1232 rp->siop_dsps); 1233 if ((rp->siop_sfbr & 0x80) == 0) 1234 printf("%s: Reselect message in was not identify: %x\n", 1235 sc->sc_dev.dv_xname, rp->siop_sfbr); 1236 #endif 1237 if (sc->sc_nexus) { 1238 #ifdef DEBUG 1239 if (siop_debug & 0x100) 1240 printf ("%s: reselect ID %02x w/active\n", 1241 sc->sc_dev.dv_xname, reselid); 1242 #endif 1243 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1244 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->scsipi_scsi.target].lubusy 1245 &= ~(1 << sc->sc_nexus->xs->sc_link->scsipi_scsi.lun); 1246 --sc->sc_active; 1247 } 1248 /* 1249 * locate acb of reselecting device 1250 * set sc->sc_nexus to acb 1251 */ 1252 for (acb = sc->nexus_list.tqh_first; acb; 1253 acb = acb->chain.tqe_next) { 1254 if (reselid != (acb->ds.scsi_addr >> 16) || 1255 reselun != (acb->msgout[0] & 0x07)) 1256 continue; 1257 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1258 sc->sc_nexus = acb; 1259 sc->sc_flags |= acb->status; 1260 acb->status = 0; 1261 DCIAS(kvtop(&acb->stat[0])); 1262 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1263 rp->siop_sxfer = 1264 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].sxfer; 1265 rp->siop_sbcl = 1266 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.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 #ifdef DEBUG 1294 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1295 sc->sc_dev.dv_xname); 1296 #if 0 1297 siop_dump(sc); 1298 #ifdef DDB 1299 Debugger(); 1300 #endif 1301 #endif 1302 #endif 1303 rp->siop_dcntl |= SIOP_DCNTL_STD; 1304 return(0); 1305 } 1306 target = sc->sc_nexus->xs->sc_link->scsipi_scsi.target; 1307 rp->siop_temp = 0; 1308 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1309 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1310 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1311 rp->siop_dsp = sc->sc_scriptspa; 1312 return (0); 1313 } 1314 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1315 if (acb == NULL) 1316 printf("%s: Bad message-in with no active command?\n", 1317 sc->sc_dev.dv_xname); 1318 /* Unrecognized message in byte */ 1319 dma_cachectl (&acb->msg[1],1); 1320 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1321 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1322 /* what should be done here? */ 1323 DCIAS(kvtop(&acb->msg[1])); 1324 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1325 return (0); 1326 } 1327 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1328 /* Status phase wasn't followed by message in phase? */ 1329 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1330 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1331 if (rp->siop_sbcl == 0xa7) { 1332 /* It is now, just continue the script? */ 1333 rp->siop_dcntl |= SIOP_DCNTL_STD; 1334 return (0); 1335 } 1336 } 1337 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1338 dma_cachectl (&acb->stat[0], 1); 1339 dma_cachectl (&acb->msg[0], 1); 1340 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1341 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1342 rp->siop_sbcl); 1343 siopreset (sc); 1344 *status = -1; 1345 return 0; /* siopreset has cleaned up */ 1346 } 1347 if (sstat0 & SIOP_SSTAT0_SGE) 1348 printf ("SIOP: SCSI Gross Error\n"); 1349 if (sstat0 & SIOP_SSTAT0_PAR) 1350 printf ("SIOP: Parity Error\n"); 1351 if (dstat & SIOP_DSTAT_IID) 1352 printf ("SIOP: Invalid instruction detected\n"); 1353 bad_phase: 1354 /* 1355 * temporary panic for unhandled conditions 1356 * displays various things about the 53C710 status and registers 1357 * then panics. 1358 * XXXX need to clean this up to print out the info, reset, and continue 1359 */ 1360 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1361 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1362 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1363 *((long *)&rp->siop_dcmd)); 1364 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1365 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1366 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1367 #ifdef DEBUG 1368 if (siop_debug & 0x20) 1369 panic("siopchkintr: **** temp ****"); 1370 #endif 1371 #ifdef DDB 1372 Debugger (); 1373 #endif 1374 siopreset (sc); /* hard reset */ 1375 *status = -1; 1376 return 0; /* siopreset cleaned up */ 1377 } 1378 1379 void 1380 siop_select(sc) 1381 struct siop_softc *sc; 1382 { 1383 siop_regmap_p rp; 1384 struct siop_acb *acb = sc->sc_nexus; 1385 1386 #ifdef DEBUG 1387 if (siop_debug & 1) 1388 printf ("%s: select ", sc->sc_dev.dv_xname); 1389 #endif 1390 1391 rp = sc->sc_siopp; 1392 if (acb->xs->flags & SCSI_POLL || siop_no_dma) { 1393 sc->sc_flags |= SIOP_INTSOFF; 1394 sc->sc_flags &= ~SIOP_INTDEFER; 1395 if ((rp->siop_istat & 0x08) == 0) { 1396 rp->siop_sien = 0; 1397 rp->siop_dien = 0; 1398 } 1399 #if 0 1400 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1401 sc->sc_flags &= ~SIOP_INTSOFF; 1402 if ((rp->siop_istat & 0x08) == 0) { 1403 rp->siop_sien = sc->sc_sien; 1404 rp->siop_dien = sc->sc_dien; 1405 } 1406 #endif 1407 } 1408 #ifdef DEBUG 1409 if (siop_debug & 1) 1410 printf ("siop_select: target %x cmd %02x ds %p\n", 1411 acb->xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 1412 &sc->sc_nexus->ds); 1413 #endif 1414 1415 siop_start(sc, acb->xs->sc_link->scsipi_scsi.target, 1416 acb->xs->sc_link->scsipi_scsi.lun, 1417 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1418 1419 return; 1420 } 1421 1422 /* 1423 * 53C710 interrupt handler 1424 */ 1425 1426 void 1427 siopintr (sc) 1428 register struct siop_softc *sc; 1429 { 1430 siop_regmap_p rp; 1431 register u_char istat, dstat, sstat0; 1432 int status; 1433 int s = splbio(); 1434 1435 istat = sc->sc_istat; 1436 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1437 splx(s); 1438 return; 1439 } 1440 1441 /* Got a valid interrupt on this device */ 1442 rp = sc->sc_siopp; 1443 dstat = sc->sc_dstat; 1444 sstat0 = sc->sc_sstat0; 1445 if (dstat & SIOP_DSTAT_SIR) 1446 sc->sc_intcode = rp->siop_dsps; 1447 sc->sc_istat = 0; 1448 #ifdef DEBUG 1449 if (siop_debug & 1) 1450 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1451 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1452 if (!sc->sc_active) { 1453 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1454 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1455 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1456 } 1457 #endif 1458 1459 #ifdef DEBUG 1460 if (siop_debug & 5) { 1461 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1462 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1463 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1464 rp->siop_dsps, rp->siop_sbcl, 1465 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1466 } 1467 #endif 1468 if (sc->sc_flags & SIOP_INTDEFER) { 1469 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1470 rp->siop_sien = sc->sc_sien; 1471 rp->siop_dien = sc->sc_dien; 1472 } 1473 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1474 #if 1 1475 if (status == 0xff) 1476 printf ("siopintr: status == 0xff\n"); 1477 #endif 1478 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1479 #if 0 1480 if (rp->siop_sbcl & SIOP_BSY) { 1481 printf ("%s: SCSI bus busy at completion", 1482 sc->sc_dev.dv_xname); 1483 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1484 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 1485 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1486 rp->siop_dsp - sc->sc_scriptspa); 1487 } 1488 #endif 1489 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1490 sc->sc_nexus->stat[0] : -1); 1491 } 1492 } 1493 splx(s); 1494 } 1495 1496 /* 1497 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1498 * not be correct for other 53c710 boards. 1499 * 1500 */ 1501 void 1502 scsi_period_to_siop (sc, target) 1503 struct siop_softc *sc; 1504 int target; 1505 { 1506 int period, offset, sxfer, sbcl = 0; 1507 #ifdef DEBUG_SYNC 1508 int i; 1509 #endif 1510 1511 period = sc->sc_nexus->msg[4]; 1512 offset = sc->sc_nexus->msg[5]; 1513 #ifdef DEBUG_SYNC 1514 sxfer = 0; 1515 if (offset <= SIOP_MAX_OFFSET) 1516 sxfer = offset; 1517 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1518 if (period <= sync_tab[i].p) { 1519 sxfer |= sync_tab[i].r & 0x70; 1520 sbcl = sync_tab[i].r & 0x03; 1521 break; 1522 } 1523 } 1524 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1525 #endif 1526 for (sbcl = 1; sbcl < 4; ++sbcl) { 1527 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1528 if (sxfer >= 0 && sxfer <= 7) 1529 break; 1530 } 1531 if (sbcl > 3) { 1532 printf("siop sync: unable to compute sync params for period %dns\n", 1533 period * 4); 1534 /* 1535 * XXX need to pick a value we can do and renegotiate 1536 */ 1537 sxfer = sbcl = 0; 1538 } else { 1539 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1540 offset : SIOP_MAX_OFFSET); 1541 #ifdef DEBUG_SYNC 1542 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1543 period * 4, sxfer, sbcl); 1544 printf(" actual period %dns\n", 1545 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1546 #endif 1547 } 1548 sc->sc_sync[target].sxfer = sxfer; 1549 sc->sc_sync[target].sbcl = sbcl; 1550 #ifdef DEBUG_SYNC 1551 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1552 #endif 1553 } 1554 1555 #ifdef DEBUG 1556 1557 #if SIOP_TRACE_SIZE 1558 void 1559 siop_dump_trace() 1560 { 1561 int i; 1562 1563 printf("siop trace: next index %d\n", siop_trix); 1564 i = siop_trix; 1565 do { 1566 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1567 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1568 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1569 } while (i != siop_trix); 1570 } 1571 #endif 1572 1573 void 1574 siop_dump_acb(acb) 1575 struct siop_acb *acb; 1576 { 1577 u_char *b = (u_char *) &acb->cmd; 1578 int i; 1579 1580 printf("acb@%p ", acb); 1581 if (acb->xs == NULL) { 1582 printf("<unused>\n"); 1583 return; 1584 } 1585 printf("(%d:%d) flags %2x clen %2d cmd ", 1586 acb->xs->sc_link->scsipi_scsi.target, 1587 acb->xs->sc_link->scsipi_scsi.lun, acb->flags, acb->clen); 1588 for (i = acb->clen; i; --i) 1589 printf(" %02x", *b++); 1590 printf("\n"); 1591 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1592 acb->xs->datalen); 1593 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1594 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1595 } 1596 1597 void 1598 siop_dump(sc) 1599 struct siop_softc *sc; 1600 { 1601 struct siop_acb *acb; 1602 siop_regmap_p rp = sc->sc_siopp; 1603 int s; 1604 int i; 1605 1606 s = splbio(); 1607 #if SIOP_TRACE_SIZE 1608 siop_dump_trace(); 1609 #endif 1610 printf("%s@%p regs %p istat %x\n", 1611 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1612 if ((acb = sc->free_list.tqh_first) > 0) { 1613 printf("Free list:\n"); 1614 while (acb) { 1615 siop_dump_acb(acb); 1616 acb = acb->chain.tqe_next; 1617 } 1618 } 1619 if ((acb = sc->ready_list.tqh_first) > 0) { 1620 printf("Ready list:\n"); 1621 while (acb) { 1622 siop_dump_acb(acb); 1623 acb = acb->chain.tqe_next; 1624 } 1625 } 1626 if ((acb = sc->nexus_list.tqh_first) > 0) { 1627 printf("Nexus list:\n"); 1628 while (acb) { 1629 siop_dump_acb(acb); 1630 acb = acb->chain.tqe_next; 1631 } 1632 } 1633 if (sc->sc_nexus) { 1634 printf("Nexus:\n"); 1635 siop_dump_acb(sc->sc_nexus); 1636 } 1637 for (i = 0; i < 8; ++i) { 1638 if (sc->sc_tinfo[i].cmds > 2) { 1639 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1640 i, sc->sc_tinfo[i].cmds, 1641 sc->sc_tinfo[i].dconns, 1642 sc->sc_tinfo[i].senses, 1643 sc->sc_tinfo[i].lubusy); 1644 } 1645 } 1646 splx(s); 1647 } 1648 #endif 1649
Indexes created Tue Sep 23 07:09:52 GMT 2025