siop.c revision 1.40
1 /* $NetBSD: siop.c,v 1.40 1999/03/26 22:50:22 mhitch Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Van Jacobson of Lawrence Berkeley Laboratory. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)siop.c 7.5 (Berkeley) 5/4/91 40 */ 41 42 /* 43 * AMIGA 53C710 scsi adaptor driver 44 */ 45 46 #include "opt_ddb.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 #include <sys/disklabel.h> 52 #include <sys/dkstat.h> 53 #include <sys/buf.h> 54 #include <sys/malloc.h> 55 #include <dev/scsipi/scsi_all.h> 56 #include <dev/scsipi/scsipi_all.h> 57 #include <dev/scsipi/scsiconf.h> 58 #include <machine/cpu.h> 59 #include <amiga/amiga/custom.h> 60 #include <amiga/amiga/isr.h> 61 #include <amiga/dev/siopreg.h> 62 #include <amiga/dev/siopvar.h> 63 64 /* 65 * SCSI delays 66 * In u-seconds, primarily for state changes on the SPC. 67 */ 68 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 69 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 70 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 71 72 void siop_select __P((struct siop_softc *)); 73 void siopabort __P((struct siop_softc *, siop_regmap_p, char *)); 74 void sioperror __P((struct siop_softc *, siop_regmap_p, u_char)); 75 void siopstart __P((struct siop_softc *)); 76 int siop_checkintr __P((struct siop_softc *, u_char, u_char, u_char, int *)); 77 void siopreset __P((struct siop_softc *)); 78 void siopsetdelay __P((int)); 79 void siop_scsidone __P((struct siop_acb *, int)); 80 void siop_sched __P((struct siop_softc *)); 81 int siop_poll __P((struct siop_softc *, struct siop_acb *)); 82 void siopintr __P((struct siop_softc *)); 83 void scsi_period_to_siop __P((struct siop_softc *, int)); 84 void siop_start __P((struct siop_softc *, int, int, u_char *, int, u_char *, int)); 85 void siop_dump_acb __P((struct siop_acb *)); 86 87 /* 53C710 script */ 88 const 89 #include <amiga/dev/siop_script.out> 90 91 /* default to not inhibit sync negotiation on any drive */ 92 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 93 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 94 int siop_no_dma = 0; 95 96 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 97 98 int siop_cmd_wait = SCSI_CMD_WAIT; 99 int siop_data_wait = SCSI_DATA_WAIT; 100 int siop_init_wait = SCSI_INIT_WAIT; 101 102 #ifdef DEBUG_SYNC 103 /* 104 * sync period transfer lookup - only valid for 66Mhz clock 105 */ 106 static struct { 107 unsigned char p; /* period from sync request message */ 108 unsigned char r; /* siop_period << 4 | sbcl */ 109 } sync_tab[] = { 110 { 60/4, 0<<4 | 1}, 111 { 76/4, 1<<4 | 1}, 112 { 92/4, 2<<4 | 1}, 113 { 92/4, 0<<4 | 2}, 114 {108/4, 3<<4 | 1}, 115 {116/4, 1<<4 | 2}, 116 {120/4, 4<<4 | 1}, 117 {120/4, 0<<4 | 3}, 118 {136/4, 5<<4 | 1}, 119 {140/4, 2<<4 | 2}, 120 {152/4, 6<<4 | 1}, 121 {152/4, 1<<4 | 3}, 122 {164/4, 3<<4 | 2}, 123 {168/4, 7<<4 | 1}, 124 {180/4, 2<<4 | 3}, 125 {184/4, 4<<4 | 2}, 126 {208/4, 5<<4 | 2}, 127 {212/4, 3<<4 | 3}, 128 {232/4, 6<<4 | 2}, 129 {240/4, 4<<4 | 3}, 130 {256/4, 7<<4 | 2}, 131 {272/4, 5<<4 | 3}, 132 {300/4, 6<<4 | 3}, 133 {332/4, 7<<4 | 3} 134 }; 135 #endif 136 137 #ifdef DEBUG 138 /* 139 * 0x01 - full debug 140 * 0x02 - DMA chaining 141 * 0x04 - siopintr 142 * 0x08 - phase mismatch 143 * 0x10 - <not used> 144 * 0x20 - panic on unhandled exceptions 145 * 0x100 - disconnect/reselect 146 */ 147 int siop_debug = 0; 148 int siopsync_debug = 0; 149 int siopdma_hits = 0; 150 int siopdma_misses = 0; 151 int siopchain_ints = 0; 152 int siopstarts = 0; 153 int siopints = 0; 154 int siopphmm = 0; 155 #define SIOP_TRACE_SIZE 128 156 #define SIOP_TRACE(a,b,c,d) \ 157 siop_trbuf[siop_trix] = (a); \ 158 siop_trbuf[siop_trix+1] = (b); \ 159 siop_trbuf[siop_trix+2] = (c); \ 160 siop_trbuf[siop_trix+3] = (d); \ 161 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 162 u_char siop_trbuf[SIOP_TRACE_SIZE]; 163 int siop_trix; 164 void siop_dump __P((struct siop_softc *)); 165 void siop_dump_trace __P((void)); 166 #else 167 #define SIOP_TRACE(a,b,c,d) 168 #endif 169 170 171 /* 172 * default minphys routine for siop based controllers 173 */ 174 void 175 siop_minphys(bp) 176 struct buf *bp; 177 { 178 179 /* 180 * No max transfer at this level. 181 */ 182 minphys(bp); 183 } 184 185 /* 186 * used by specific siop controller 187 * 188 */ 189 int 190 siop_scsicmd(xs) 191 struct scsipi_xfer *xs; 192 { 193 struct siop_acb *acb; 194 struct siop_softc *sc; 195 struct scsipi_link *slp; 196 int flags, s; 197 198 slp = xs->sc_link; 199 sc = slp->adapter_softc; 200 flags = xs->flags; 201 202 /* XXXX ?? */ 203 if (flags & SCSI_DATA_UIO) 204 panic("siop: scsi data uio requested"); 205 206 /* XXXX ?? */ 207 if (sc->sc_nexus && flags & SCSI_POLL) 208 /* panic("siop_scsicmd: busy");*/ 209 printf("siop_scsicmd: busy\n"); 210 211 s = splbio(); 212 acb = sc->free_list.tqh_first; 213 if (acb) { 214 TAILQ_REMOVE(&sc->free_list, acb, chain); 215 } 216 splx(s); 217 218 if (acb == NULL) { 219 xs->error = XS_DRIVER_STUFFUP; 220 return(TRY_AGAIN_LATER); 221 } 222 223 acb->flags = ACB_ACTIVE; 224 acb->xs = xs; 225 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 226 acb->clen = xs->cmdlen; 227 acb->daddr = xs->data; 228 acb->dleft = xs->datalen; 229 230 s = splbio(); 231 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 232 233 if (sc->sc_nexus == NULL) 234 siop_sched(sc); 235 236 splx(s); 237 238 if (flags & SCSI_POLL || siop_no_dma) 239 return(siop_poll(sc, acb)); 240 return(SUCCESSFULLY_QUEUED); 241 } 242 243 int 244 siop_poll(sc, acb) 245 struct siop_softc *sc; 246 struct siop_acb *acb; 247 { 248 siop_regmap_p rp = sc->sc_siopp; 249 struct scsipi_xfer *xs = acb->xs; 250 int i; 251 int status; 252 u_char istat; 253 u_char dstat; 254 u_char sstat0; 255 int s; 256 int to; 257 258 s = splbio(); 259 to = xs->timeout / 1000; 260 if (sc->nexus_list.tqh_first) 261 printf("%s: siop_poll called with disconnected device\n", 262 sc->sc_dev.dv_xname); 263 for (;;) { 264 /* use cmd_wait values? */ 265 i = 50000; 266 /* XXX spl0(); */ 267 while (((istat = rp->siop_istat) & 268 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 269 if (--i <= 0) { 270 #ifdef DEBUG 271 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 272 xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 273 rp->siop_sbcl, rp->siop_dsp, 274 rp->siop_dsp - sc->sc_scriptspa, 275 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 276 #endif 277 i = 50000; 278 --to; 279 if (to <= 0) { 280 siopreset(sc); 281 return(COMPLETE); 282 } 283 } 284 delay(20); 285 } 286 sstat0 = rp->siop_sstat0; 287 dstat = rp->siop_dstat; 288 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 289 if (acb != sc->sc_nexus) 290 printf("%s: siop_poll disconnected device completed\n", 291 sc->sc_dev.dv_xname); 292 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 293 sc->sc_flags &= ~SIOP_INTSOFF; 294 rp->siop_sien = sc->sc_sien; 295 rp->siop_dien = sc->sc_dien; 296 } 297 siop_scsidone(sc->sc_nexus, status); 298 } 299 if (xs->flags & ITSDONE) 300 break; 301 } 302 splx(s); 303 return (COMPLETE); 304 } 305 306 /* 307 * start next command that's ready 308 */ 309 void 310 siop_sched(sc) 311 struct siop_softc *sc; 312 { 313 struct scsipi_link *slp; 314 struct siop_acb *acb; 315 int i; 316 317 #ifdef DEBUG 318 if (sc->sc_nexus) { 319 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 320 sc->sc_dev.dv_xname, sc->sc_nexus, 321 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 322 sc->ready_list.tqh_first, 323 sc->ready_list.tqh_first->xs->sc_link->scsipi_scsi.target); 324 return; 325 } 326 #endif 327 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 328 slp = acb->xs->sc_link; 329 i = slp->scsipi_scsi.target; 330 if(!(sc->sc_tinfo[i].lubusy & (1 << slp->scsipi_scsi.lun))) { 331 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 332 333 TAILQ_REMOVE(&sc->ready_list, acb, chain); 334 sc->sc_nexus = acb; 335 slp = acb->xs->sc_link; 336 ti = &sc->sc_tinfo[slp->scsipi_scsi.target]; 337 ti->lubusy |= (1 << slp->scsipi_scsi.lun); 338 break; 339 } 340 } 341 342 if (acb == NULL) { 343 #ifdef DEBUGXXX 344 printf("%s: siop_sched didn't find ready command\n", 345 sc->sc_dev.dv_xname); 346 #endif 347 return; 348 } 349 350 if (acb->xs->flags & SCSI_RESET) 351 siopreset(sc); 352 353 #if 0 354 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 355 #endif 356 ++sc->sc_active; 357 siop_select(sc); 358 } 359 360 void 361 siop_scsidone(acb, stat) 362 struct siop_acb *acb; 363 int stat; 364 { 365 struct scsipi_xfer *xs; 366 struct scsipi_link *slp; 367 struct siop_softc *sc; 368 int dosched = 0; 369 370 if (acb == NULL || (xs = acb->xs) == NULL) { 371 #ifdef DIAGNOSTIC 372 printf("siop_scsidone: NULL acb or scsipi_xfer\n"); 373 #if defined(DEBUG) && defined(DDB) 374 Debugger(); 375 #endif 376 #endif 377 return; 378 } 379 slp = xs->sc_link; 380 sc = slp->adapter_softc; 381 /* 382 * is this right? 383 */ 384 xs->status = stat; 385 386 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 387 if (stat == SCSI_CHECK) { 388 struct scsipi_sense *ss = (void *)&acb->cmd; 389 bzero(ss, sizeof(*ss)); 390 ss->opcode = REQUEST_SENSE; 391 ss->byte2 = slp->scsipi_scsi.lun << 5; 392 ss->length = sizeof(struct scsipi_sense_data); 393 acb->clen = sizeof(*ss); 394 acb->daddr = (char *)&xs->sense.scsi_sense; 395 acb->dleft = sizeof(struct scsipi_sense_data); 396 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 397 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 398 --sc->sc_active; 399 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy &= 400 ~(1 << slp->scsipi_scsi.lun); 401 sc->sc_tinfo[slp->scsipi_scsi.target].senses++; 402 if (sc->sc_nexus == acb) { 403 sc->sc_nexus = NULL; 404 siop_sched(sc); 405 } 406 SIOP_TRACE('d','s',0,0) 407 return; 408 } 409 } 410 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 411 xs->error = XS_SENSE; 412 } else { 413 xs->resid = 0; /* XXXX */ 414 } 415 #if whataboutthisone 416 case SCSI_BUSY: 417 xs->error = XS_BUSY; 418 break; 419 #endif 420 xs->flags |= ITSDONE; 421 422 /* 423 * Remove the ACB from whatever queue it's on. We have to do a bit of 424 * a hack to figure out which queue it's on. Note that it is *not* 425 * necessary to cdr down the ready queue, but we must cdr down the 426 * nexus queue and see if it's there, so we can mark the unit as no 427 * longer busy. This code is sickening, but it works. 428 */ 429 if (acb == sc->sc_nexus) { 430 sc->sc_nexus = NULL; 431 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy &= 432 ~(1<<slp->scsipi_scsi.lun); 433 if (sc->ready_list.tqh_first) 434 dosched = 1; /* start next command */ 435 --sc->sc_active; 436 SIOP_TRACE('d','a',stat,0) 437 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 438 TAILQ_REMOVE(&sc->ready_list, acb, chain); 439 SIOP_TRACE('d','r',stat,0) 440 } else { 441 register struct siop_acb *acb2; 442 for (acb2 = sc->nexus_list.tqh_first; acb2; 443 acb2 = acb2->chain.tqe_next) 444 if (acb2 == acb) { 445 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 446 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy 447 &= ~(1<<slp->scsipi_scsi.lun); 448 --sc->sc_active; 449 break; 450 } 451 if (acb2) 452 ; 453 else if (acb->chain.tqe_next) { 454 TAILQ_REMOVE(&sc->ready_list, acb, chain); 455 --sc->sc_active; 456 } else { 457 printf("%s: can't find matching acb\n", 458 sc->sc_dev.dv_xname); 459 #ifdef DDB 460 /* Debugger(); */ 461 #endif 462 } 463 SIOP_TRACE('d','n',stat,0); 464 } 465 /* Put it on the free list. */ 466 acb->flags = ACB_FREE; 467 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 468 469 sc->sc_tinfo[slp->scsipi_scsi.target].cmds++; 470 471 scsipi_done(xs); 472 473 if (dosched && sc->sc_nexus == NULL) 474 siop_sched(sc); 475 } 476 477 void 478 siopabort(sc, rp, where) 479 register struct siop_softc *sc; 480 siop_regmap_p rp; 481 char *where; 482 { 483 #ifdef fix_this 484 int i; 485 #endif 486 487 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 488 sc->sc_dev.dv_xname, 489 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 490 491 if (sc->sc_active > 0) { 492 #ifdef TODO 493 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 494 WAIT_CIP (rp); 495 496 GET_SBIC_asr (rp, asr); 497 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 498 { 499 /* ok, get more drastic.. */ 500 501 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 502 delay(25); 503 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 504 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 505 506 return; 507 } 508 509 do 510 { 511 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 512 GET_SBIC_csr (rp, csr); 513 } 514 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 515 && (csr != SBIC_CSR_CMD_INVALID)); 516 #endif 517 518 /* lets just hope it worked.. */ 519 #ifdef fix_this 520 for (i = 0; i < 2; ++i) { 521 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 522 sc->sc_cur) { 523 printf ("siopabort: cleanup!\n"); 524 sc->sc_iob[i].sc_xs = NULL; 525 } 526 } 527 #endif /* fix_this */ 528 /* sc->sc_active = 0; */ 529 } 530 } 531 532 void 533 siopinitialize(sc) 534 struct siop_softc *sc; 535 { 536 int i; 537 u_int inhibit_sync; 538 extern u_long scsi_nosync; 539 extern int shift_nosync; 540 541 /* 542 * Need to check that scripts is on a long word boundary 543 * Also should verify that dev doesn't span non-contiguous 544 * physical pages. 545 */ 546 sc->sc_scriptspa = kvtop((caddr_t)scripts); 547 548 /* 549 * malloc sc_acb to ensure that DS is on a long word boundary. 550 */ 551 552 MALLOC(sc->sc_acb, struct siop_acb *, 553 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 554 if (sc->sc_acb == NULL) 555 panic("siopinitialize: ACB malloc failed!"); 556 557 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 558 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 559 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 560 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 561 if (sc->sc_minsync < 25) 562 sc->sc_minsync = 25; 563 if (sc->sc_clock_freq <= 25) { 564 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 565 sc->sc_tcp[0] = sc->sc_tcp[1]; 566 } else if (sc->sc_clock_freq <= 37) { 567 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 568 sc->sc_tcp[0] = sc->sc_tcp[2]; 569 } else if (sc->sc_clock_freq <= 50) { 570 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 571 sc->sc_tcp[0] = sc->sc_tcp[3]; 572 } else { 573 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 574 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 575 } 576 577 if (scsi_nosync) { 578 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 579 shift_nosync += 8; 580 #ifdef DEBUG 581 if (inhibit_sync) 582 printf("%s: Inhibiting synchronous transfer %02x\n", 583 sc->sc_dev.dv_xname, inhibit_sync); 584 #endif 585 for (i = 0; i < 8; ++i) 586 if (inhibit_sync & (1 << i)) 587 siop_inhibit_sync[i] = 1; 588 } 589 590 siopreset (sc); 591 } 592 593 void 594 siopreset(sc) 595 struct siop_softc *sc; 596 { 597 siop_regmap_p rp; 598 u_int i, s; 599 u_char dummy; 600 struct siop_acb *acb; 601 602 rp = sc->sc_siopp; 603 604 if (sc->sc_flags & SIOP_ALIVE) 605 siopabort(sc, rp, "reset"); 606 607 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 608 609 s = splbio(); 610 611 /* 612 * Reset the chip 613 * XXX - is this really needed? 614 */ 615 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 616 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 617 rp->siop_istat &= ~SIOP_ISTAT_RST; 618 /* 619 * Reset SCSI bus (do we really want this?) 620 */ 621 rp->siop_sien = 0; 622 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 623 delay(1); 624 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 625 626 /* 627 * Set up various chip parameters 628 */ 629 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 630 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 631 rp->siop_dcntl = sc->sc_dcntl; 632 rp->siop_dmode = 0x80; /* burst length = 4 */ 633 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 634 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 635 rp->siop_scid = 1 << sc->sc_link.scsipi_scsi.adapter_target; 636 rp->siop_dwt = 0x00; 637 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 638 rp->siop_ctest7 |= sc->sc_ctest7; 639 640 /* will need to re-negotiate sync xfers */ 641 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 642 643 i = rp->siop_istat; 644 if (i & SIOP_ISTAT_SIP) 645 dummy = rp->siop_sstat0; 646 if (i & SIOP_ISTAT_DIP) 647 dummy = rp->siop_dstat; 648 649 splx (s); 650 651 delay (siop_reset_delay * 1000); 652 printf("siop id %d reset V%d\n", sc->sc_link.scsipi_scsi.adapter_target, 653 rp->siop_ctest8 >> 4); 654 655 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 656 TAILQ_INIT(&sc->ready_list); 657 TAILQ_INIT(&sc->nexus_list); 658 TAILQ_INIT(&sc->free_list); 659 sc->sc_nexus = NULL; 660 acb = sc->sc_acb; 661 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 662 for (i = 0; i < SIOP_NACB; i++) { 663 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 664 acb++; 665 } 666 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 667 } else { 668 if (sc->sc_nexus != NULL) { 669 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 670 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 671 } 672 while ((acb = sc->nexus_list.tqh_first) > 0) { 673 acb->xs->error = XS_DRIVER_STUFFUP; 674 siop_scsidone(acb, acb->stat[0]); 675 } 676 } 677 678 sc->sc_flags |= SIOP_ALIVE; 679 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 680 /* enable SCSI and DMA interrupts */ 681 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 682 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 683 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 684 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 685 rp->siop_sien = sc->sc_sien; 686 rp->siop_dien = sc->sc_dien; 687 } 688 689 /* 690 * Setup Data Storage for 53C710 and start SCRIPTS processing 691 */ 692 693 void 694 siop_start (sc, target, lun, cbuf, clen, buf, len) 695 struct siop_softc *sc; 696 int target; 697 int lun; 698 u_char *cbuf; 699 int clen; 700 u_char *buf; 701 int len; 702 { 703 siop_regmap_p rp = sc->sc_siopp; 704 int nchain; 705 int count, tcount; 706 char *addr, *dmaend; 707 struct siop_acb *acb = sc->sc_nexus; 708 #ifdef DEBUG 709 int i; 710 #endif 711 712 #ifdef DEBUG 713 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 714 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 715 rp, &scripts, &acb->ds, sc->sc_active); 716 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 717 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 718 rp->siop_sien, rp->siop_dien); 719 #ifdef DDB 720 /*Debugger();*/ 721 #endif 722 } 723 #endif 724 acb->msgout[0] = MSG_IDENTIFY | lun; 725 if (siop_allow_disc[target] & 2 || 726 (siop_allow_disc[target] && len == 0)) 727 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 728 acb->status = 0; 729 acb->stat[0] = -1; 730 acb->msg[0] = -1; 731 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 732 acb->ds.idlen = 1; 733 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 734 acb->ds.cmdlen = clen; 735 acb->ds.cmdbuf = (char *) kvtop(cbuf); 736 acb->ds.stslen = 1; 737 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 738 acb->ds.msglen = 1; 739 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 740 acb->msg[1] = -1; 741 acb->ds.msginlen = 1; 742 acb->ds.extmsglen = 1; 743 acb->ds.synmsglen = 3; 744 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 745 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 746 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 747 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 748 749 /* 750 * Negotiate wide is the initial negotiation state; since the 53c710 751 * doesn't do wide transfers, just begin the synchronous transfer 752 * negotation here. 753 */ 754 if (sc->sc_sync[target].state == NEG_WIDE) { 755 if (siop_inhibit_sync[target]) { 756 sc->sc_sync[target].state = NEG_DONE; 757 sc->sc_sync[target].sbcl = 0; 758 sc->sc_sync[target].sxfer = 0; 759 #ifdef DEBUG 760 if (siopsync_debug) 761 printf ("Forcing target %d asynchronous\n", target); 762 #endif 763 } 764 else { 765 acb->msg[2] = -1; 766 acb->msgout[1] = MSG_EXT_MESSAGE; 767 acb->msgout[2] = 3; 768 acb->msgout[3] = MSG_SYNC_REQ; 769 #ifdef MAXTOR_SYNC_KLUDGE 770 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 771 #else 772 acb->msgout[4] = sc->sc_minsync; 773 #endif 774 acb->msgout[5] = SIOP_MAX_OFFSET; 775 acb->ds.idlen = 6; 776 sc->sc_sync[target].state = NEG_WAITS; 777 #ifdef DEBUG 778 if (siopsync_debug) 779 printf ("Sending sync request to target %d\n", target); 780 #endif 781 } 782 } 783 784 /* 785 * Build physical DMA addresses for scatter/gather I/O 786 */ 787 acb->iob_buf = buf; 788 acb->iob_len = len; 789 acb->iob_curbuf = acb->iob_curlen = 0; 790 nchain = 0; 791 count = len; 792 addr = buf; 793 dmaend = NULL; 794 while (count > 0) { 795 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 796 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 797 tcount = count; 798 acb->ds.chain[nchain].datalen = tcount; 799 addr += tcount; 800 count -= tcount; 801 if (acb->ds.chain[nchain].databuf == dmaend) { 802 dmaend += acb->ds.chain[nchain].datalen; 803 acb->ds.chain[nchain].datalen = 0; 804 acb->ds.chain[--nchain].datalen += tcount; 805 #ifdef DEBUG 806 ++siopdma_hits; 807 #endif 808 } 809 else { 810 dmaend = acb->ds.chain[nchain].databuf + 811 acb->ds.chain[nchain].datalen; 812 acb->ds.chain[nchain].datalen = tcount; 813 #ifdef DEBUG 814 if (nchain) /* Don't count miss on first one */ 815 ++siopdma_misses; 816 #endif 817 } 818 ++nchain; 819 } 820 #ifdef DEBUG 821 if (nchain != 1 && len != 0 && siop_debug & 3) { 822 printf ("DMA chaining set: %d\n", nchain); 823 for (i = 0; i < nchain; ++i) { 824 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 825 acb->ds.chain[i].datalen); 826 } 827 } 828 #endif 829 830 /* push data cache for all data the 53c710 needs to access */ 831 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 832 dma_cachectl (cbuf, clen); 833 if (buf != NULL && len != 0) 834 dma_cachectl (buf, len); 835 #ifdef DEBUG 836 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 837 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 838 rp, &scripts, &acb->ds, sc->sc_active); 839 #ifdef DDB 840 /*Debugger();*/ 841 #endif 842 } 843 #endif 844 if (sc->nexus_list.tqh_first == NULL) { 845 if (rp->siop_istat & SIOP_ISTAT_CON) 846 printf("%s: siop_select while connected?\n", 847 sc->sc_dev.dv_xname); 848 rp->siop_temp = 0; 849 rp->siop_sbcl = sc->sc_sync[target].sbcl; 850 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 851 rp->siop_dsp = sc->sc_scriptspa; 852 SIOP_TRACE('s',1,0,0) 853 } else { 854 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 855 rp->siop_istat = SIOP_ISTAT_SIGP; 856 SIOP_TRACE('s',2,0,0); 857 } 858 else { 859 SIOP_TRACE('s',3,rp->siop_istat,0); 860 } 861 } 862 #ifdef DEBUG 863 ++siopstarts; 864 #endif 865 } 866 867 /* 868 * Process a DMA or SCSI interrupt from the 53C710 SIOP 869 */ 870 871 int 872 siop_checkintr(sc, istat, dstat, sstat0, status) 873 struct siop_softc *sc; 874 u_char istat; 875 u_char dstat; 876 u_char sstat0; 877 int *status; 878 { 879 siop_regmap_p rp = sc->sc_siopp; 880 struct siop_acb *acb = sc->sc_nexus; 881 int target = 0; 882 int dfifo, dbc, sstat1; 883 884 dfifo = rp->siop_dfifo; 885 dbc = rp->siop_dbc0; 886 sstat1 = rp->siop_sstat1; 887 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 888 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 889 ; 890 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 891 #ifdef DEBUG 892 ++siopints; 893 #if 0 894 if (siop_debug & 0x100) { 895 DCIAS(&acb->stat[0]); /* XXX */ 896 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 897 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 898 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 899 acb->msg[0], acb->msg[1], acb->msg[2], 900 acb->msg[3], acb->msg[4], acb->msg[5]); 901 } 902 #endif 903 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 904 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 905 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 906 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 907 sc->sc_scriptspa + sizeof(scripts)); 908 printf(" istat %x dstat %x sstat0 %x\n", 909 istat, dstat, sstat0); 910 #ifdef DDB 911 Debugger(); 912 #endif 913 } 914 #endif 915 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 916 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 917 /* Normal completion status, or check condition */ 918 #ifdef DEBUG 919 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 920 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 921 kvtop((caddr_t)&acb->ds)); 922 panic("*** siop DSA invalid ***"); 923 } 924 #endif 925 target = acb->xs->sc_link->scsipi_scsi.target; 926 if (sc->sc_sync[target].state == NEG_WAITS) { 927 if (acb->msg[1] == 0xff) 928 printf ("%s: target %d ignored sync request\n", 929 sc->sc_dev.dv_xname, target); 930 else if (acb->msg[1] == MSG_REJECT) 931 printf ("%s: target %d rejected sync request\n", 932 sc->sc_dev.dv_xname, target); 933 else 934 /* XXX - need to set sync transfer parameters */ 935 printf("%s: target %d (sync) %02x %02x %02x\n", 936 sc->sc_dev.dv_xname, target, acb->msg[1], 937 acb->msg[2], acb->msg[3]); 938 sc->sc_sync[target].state = NEG_DONE; 939 } 940 dma_cachectl(&acb->stat[0], 1); 941 *status = acb->stat[0]; 942 #ifdef DEBUG 943 if (rp->siop_sbcl & SIOP_BSY) { 944 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 945 rp, &scripts, &acb->ds);*/ 946 #ifdef DDB 947 /*Debugger();*/ 948 #endif 949 } 950 if (acb->msg[0] != 0x00) 951 printf("%s: message was not COMMAND COMPLETE: %x\n", 952 sc->sc_dev.dv_xname, acb->msg[0]); 953 #endif 954 if (sc->nexus_list.tqh_first) 955 rp->siop_dcntl |= SIOP_DCNTL_STD; 956 return 1; 957 } 958 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 959 target = acb->xs->sc_link->scsipi_scsi.target; 960 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 961 acb->msg[3] == MSG_SYNC_REQ) { 962 #ifdef DEBUG 963 if (siopsync_debug) 964 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 965 acb->msg[0], acb->msg[1], acb->msg[2], 966 acb->msg[3], acb->msg[4], acb->msg[5]); 967 #endif 968 sc->sc_sync[target].sxfer = 0; 969 sc->sc_sync[target].sbcl = 0; 970 if (acb->msg[2] == 3 && 971 acb->msg[3] == MSG_SYNC_REQ && 972 acb->msg[5] != 0) { 973 #ifdef MAXTOR_KLUDGE 974 /* 975 * Kludge for my Maxtor XT8580S 976 * It accepts whatever we request, even 977 * though it won't work. So we ask for 978 * a short period than we can handle. If 979 * the device says it can do it, use 208ns. 980 * If the device says it can do less than 981 * 100ns, then we limit it to 100ns. 982 */ 983 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 984 #ifdef DEBUG 985 printf ("%d: target %d wanted %dns period\n", 986 sc->sc_dev.dv_xname, target, 987 acb->msg[4] * 4); 988 #endif 989 if (acb->msg[4] == 50 / 4) 990 acb->msg[4] = 208 / 4; 991 else 992 acb->msg[4] = 100 / 4; 993 } 994 #endif /* MAXTOR_KLUDGE */ 995 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 996 sc->sc_dev.dv_xname, target, 997 acb->msg[4] * 4, acb->msg[5]); 998 scsi_period_to_siop (sc, target); 999 } 1000 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1001 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1002 if (sc->sc_sync[target].state == NEG_WAITS) { 1003 sc->sc_sync[target].state = NEG_DONE; 1004 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1005 return(0); 1006 } 1007 rp->siop_dcntl |= SIOP_DCNTL_STD; 1008 sc->sc_sync[target].state = NEG_DONE; 1009 return (0); 1010 } 1011 /* XXX - not SDTR message */ 1012 } 1013 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 1014 #ifdef DEBUG 1015 ++siopphmm; 1016 if (acb == NULL) 1017 printf("%s: Phase mismatch with no active command?\n", 1018 sc->sc_dev.dv_xname); 1019 #endif 1020 if (acb->iob_len) { 1021 int adjust; 1022 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1023 if (sstat1 & SIOP_SSTAT1_ORF) 1024 ++adjust; 1025 if (sstat1 & SIOP_SSTAT1_OLF) 1026 ++adjust; 1027 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1028 acb->iob_curlen += adjust; 1029 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1030 #ifdef DEBUG 1031 if (siop_debug & 0x100) { 1032 int i; 1033 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1034 acb->iob_curbuf, acb->iob_curlen, dfifo, 1035 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1036 if (acb->ds.chain[1].datalen) { 1037 for (i = 0; acb->ds.chain[i].datalen; ++i) 1038 printf("chain[%d] addr %p len %lx\n", 1039 i, acb->ds.chain[i].databuf, 1040 acb->ds.chain[i].datalen); 1041 } 1042 } 1043 #endif 1044 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1045 } 1046 #ifdef DEBUG 1047 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1048 if (siop_debug & 9) 1049 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1050 rp->siop_sbcl, 1051 rp->siop_dsp - sc->sc_scriptspa, 1052 *((long *)&rp->siop_dcmd)); 1053 #endif 1054 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1055 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1056 rp->siop_sbcl, rp->siop_dsp); 1057 #if defined(DEBUG) && defined(DDB) 1058 Debugger(); 1059 #endif 1060 } 1061 switch (rp->siop_sbcl & 7) { 1062 case 0: /* data out */ 1063 case 1: /* data in */ 1064 case 2: /* status */ 1065 case 3: /* command */ 1066 case 6: /* message in */ 1067 case 7: /* message out */ 1068 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1069 break; 1070 default: 1071 goto bad_phase; 1072 } 1073 return 0; 1074 } 1075 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1076 #ifdef DEBUG 1077 if (acb == NULL) 1078 printf("%s: Select timeout with no active command?\n", 1079 sc->sc_dev.dv_xname); 1080 if (rp->siop_sbcl & SIOP_BSY) { 1081 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1082 rp, &scripts, &acb->ds); 1083 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1084 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1085 if (!(rp->siop_sbcl & SIOP_BSY)) { 1086 printf ("Yikes, it's not busy now!\n"); 1087 #if 0 1088 *status = -1; 1089 if (sc->nexus_list.tqh_first) 1090 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1091 return 1; 1092 #endif 1093 } 1094 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1095 return (0); 1096 #ifdef DDB 1097 Debugger(); 1098 #endif 1099 } 1100 #endif 1101 *status = -1; 1102 acb->xs->error = XS_SELTIMEOUT; 1103 if (sc->nexus_list.tqh_first) 1104 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1105 return 1; 1106 } 1107 if (acb) 1108 target = acb->xs->sc_link->scsipi_scsi.target; 1109 else 1110 target = 7; 1111 if (sstat0 & SIOP_SSTAT0_UDC) { 1112 #ifdef DEBUG 1113 if (acb == NULL) 1114 printf("%s: Unexpected disconnect with no active command?\n", 1115 sc->sc_dev.dv_xname); 1116 printf ("%s: target %d disconnected unexpectedly\n", 1117 sc->sc_dev.dv_xname, target); 1118 #endif 1119 #if 0 1120 siopabort (sc, rp, "siopchkintr"); 1121 #endif 1122 *status = STS_BUSY; 1123 if (sc->nexus_list.tqh_first) 1124 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1125 return (acb != NULL); 1126 } 1127 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1128 rp->siop_dsps == 0xff02)) { 1129 #ifdef DEBUG 1130 if (siop_debug & 0x100) 1131 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", 1132 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1133 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1134 acb->iob_curbuf, acb->iob_curlen, 1135 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1136 #endif 1137 if (acb == NULL) { 1138 printf("%s: Disconnect with no active command?\n", 1139 sc->sc_dev.dv_xname); 1140 return (0); 1141 } 1142 /* 1143 * XXXX need to update iob_curbuf/iob_curlen to reflect 1144 * current data transferred. If device disconnected in 1145 * the middle of a DMA block, they should already be set 1146 * by the phase change interrupt. If the disconnect 1147 * occurs on a DMA block boundary, we have to figure out 1148 * which DMA block it was. 1149 */ 1150 if (acb->iob_len && rp->siop_temp) { 1151 int n = rp->siop_temp - sc->sc_scriptspa; 1152 1153 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1154 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1155 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1156 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1157 if (n < Ent_datain) 1158 n = (n - Ent_dataout) / 16; 1159 else 1160 n = (n - Ent_datain) / 16; 1161 if (n <= 0 && n > DMAMAXIO) 1162 printf("TEMP invalid %d\n", n); 1163 else { 1164 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1165 acb->iob_curlen = acb->ds.chain[n].datalen; 1166 } 1167 #ifdef DEBUG 1168 if (siop_debug & 0x100) { 1169 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1170 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1171 acb->iob_curlen); 1172 } 1173 #endif 1174 } 1175 /* 1176 * If data transfer was interrupted by disconnect, iob_curbuf 1177 * and iob_curlen should reflect the point of interruption. 1178 * Adjust the DMA chain so that the data transfer begins 1179 * at the appropriate place upon reselection. 1180 * XXX This should only be done on save data pointer message? 1181 */ 1182 if (acb->iob_curlen) { 1183 int i, j; 1184 1185 #ifdef DEBUG 1186 if (siop_debug & 0x100) 1187 printf ("%s: adjusting DMA chain\n", 1188 sc->sc_dev.dv_xname); 1189 if (rp->siop_dsps == 0xff02) 1190 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1191 sc->sc_dev.dv_xname, 1 << target); 1192 #endif 1193 for (i = 0; i < DMAMAXIO; ++i) { 1194 if (acb->ds.chain[i].datalen == 0) 1195 break; 1196 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1197 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1198 acb->ds.chain[i].datalen)) 1199 break; 1200 } 1201 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1202 printf("couldn't find saved data pointer: "); 1203 printf("curbuf %lx curlen %lx i %d\n", 1204 acb->iob_curbuf, acb->iob_curlen, i); 1205 #ifdef DDB 1206 Debugger(); 1207 #endif 1208 } 1209 #ifdef DEBUG 1210 if (siop_debug & 0x100) 1211 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1212 acb->ds.chain[0].databuf, 1213 acb->ds.chain[0].datalen, 1214 acb->iob_curbuf, 1215 acb->iob_curlen); 1216 #endif 1217 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1218 acb->ds.chain[0].datalen = acb->iob_curlen; 1219 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1220 #ifdef DEBUG 1221 if (siop_debug & 0x100) 1222 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1223 acb->ds.chain[j].databuf, 1224 acb->ds.chain[j].datalen, 1225 acb->ds.chain[i].databuf, 1226 acb->ds.chain[i].datalen); 1227 #endif 1228 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1229 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1230 } 1231 if (j < DMAMAXIO) 1232 acb->ds.chain[j].datalen = 0; 1233 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1234 } 1235 ++sc->sc_tinfo[target].dconns; 1236 /* 1237 * add nexus to waiting list 1238 * clear nexus 1239 * try to start another command for another target/lun 1240 */ 1241 acb->status = sc->sc_flags & SIOP_INTSOFF; 1242 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1243 sc->sc_nexus = NULL; /* no current device */ 1244 /* start script to wait for reselect */ 1245 if (sc->sc_nexus == NULL) 1246 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1247 /* XXXX start another command ? */ 1248 if (sc->ready_list.tqh_first) 1249 siop_sched(sc); 1250 return (0); 1251 } 1252 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1253 int reselid = rp->siop_scratch & 0x7f; 1254 int reselun = rp->siop_sfbr & 0x07; 1255 1256 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1257 #ifdef DEBUG 1258 if (siop_debug & 0x100) 1259 printf ("%s: target ID %02x reselected dsps %lx\n", 1260 sc->sc_dev.dv_xname, reselid, 1261 rp->siop_dsps); 1262 if ((rp->siop_sfbr & 0x80) == 0) 1263 printf("%s: Reselect message in was not identify: %x\n", 1264 sc->sc_dev.dv_xname, rp->siop_sfbr); 1265 #endif 1266 if (sc->sc_nexus) { 1267 #ifdef DEBUG 1268 if (siop_debug & 0x100) 1269 printf ("%s: reselect ID %02x w/active\n", 1270 sc->sc_dev.dv_xname, reselid); 1271 #endif 1272 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1273 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->scsipi_scsi.target].lubusy 1274 &= ~(1 << sc->sc_nexus->xs->sc_link->scsipi_scsi.lun); 1275 --sc->sc_active; 1276 } 1277 /* 1278 * locate acb of reselecting device 1279 * set sc->sc_nexus to acb 1280 */ 1281 for (acb = sc->nexus_list.tqh_first; acb; 1282 acb = acb->chain.tqe_next) { 1283 if (reselid != (acb->ds.scsi_addr >> 16) || 1284 reselun != (acb->msgout[0] & 0x07)) 1285 continue; 1286 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1287 sc->sc_nexus = acb; 1288 sc->sc_flags |= acb->status; 1289 acb->status = 0; 1290 DCIAS(kvtop(&acb->stat[0])); 1291 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1292 rp->siop_sxfer = 1293 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].sxfer; 1294 rp->siop_sbcl = 1295 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].sbcl; 1296 break; 1297 } 1298 if (acb == NULL) { 1299 printf("%s: target ID %02x reselect nexus_list %p\n", 1300 sc->sc_dev.dv_xname, reselid, 1301 sc->nexus_list.tqh_first); 1302 panic("unable to find reselecting device"); 1303 } 1304 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1305 rp->siop_temp = 0; 1306 rp->siop_dcntl |= SIOP_DCNTL_STD; 1307 return (0); 1308 } 1309 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1310 #ifdef DEBUG 1311 u_short ctest2 = rp->siop_ctest2; 1312 1313 /* reselect was interrupted (by Sig_P or select) */ 1314 if (siop_debug & 0x100 || 1315 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1316 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1317 sc->sc_dev.dv_xname, rp->siop_scntl1, 1318 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1319 #endif 1320 /* XXX assumes it was not select */ 1321 if (sc->sc_nexus == NULL) { 1322 #ifdef DEBUG 1323 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1324 sc->sc_dev.dv_xname); 1325 #if 0 1326 siop_dump(sc); 1327 #ifdef DDB 1328 Debugger(); 1329 #endif 1330 #endif 1331 #endif 1332 rp->siop_dcntl |= SIOP_DCNTL_STD; 1333 return(0); 1334 } 1335 target = sc->sc_nexus->xs->sc_link->scsipi_scsi.target; 1336 rp->siop_temp = 0; 1337 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1338 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1339 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1340 rp->siop_dsp = sc->sc_scriptspa; 1341 return (0); 1342 } 1343 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1344 if (acb == NULL) 1345 printf("%s: Bad message-in with no active command?\n", 1346 sc->sc_dev.dv_xname); 1347 /* Unrecognized message in byte */ 1348 dma_cachectl (&acb->msg[1],1); 1349 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1350 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1351 /* what should be done here? */ 1352 DCIAS(kvtop(&acb->msg[1])); 1353 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1354 return (0); 1355 } 1356 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1357 /* Status phase wasn't followed by message in phase? */ 1358 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1359 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1360 if (rp->siop_sbcl == 0xa7) { 1361 /* It is now, just continue the script? */ 1362 rp->siop_dcntl |= SIOP_DCNTL_STD; 1363 return (0); 1364 } 1365 } 1366 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1367 dma_cachectl (&acb->stat[0], 1); 1368 dma_cachectl (&acb->msg[0], 1); 1369 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1370 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1371 rp->siop_sbcl); 1372 siopreset (sc); 1373 *status = -1; 1374 return 0; /* siopreset has cleaned up */ 1375 } 1376 if (sstat0 & SIOP_SSTAT0_SGE) 1377 printf ("SIOP: SCSI Gross Error\n"); 1378 if (sstat0 & SIOP_SSTAT0_PAR) 1379 printf ("SIOP: Parity Error\n"); 1380 if (dstat & SIOP_DSTAT_IID) 1381 printf ("SIOP: Invalid instruction detected\n"); 1382 bad_phase: 1383 /* 1384 * temporary panic for unhandled conditions 1385 * displays various things about the 53C710 status and registers 1386 * then panics. 1387 * XXXX need to clean this up to print out the info, reset, and continue 1388 */ 1389 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1390 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1391 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1392 *((long *)&rp->siop_dcmd)); 1393 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1394 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1395 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1396 #ifdef DEBUG 1397 if (siop_debug & 0x20) 1398 panic("siopchkintr: **** temp ****"); 1399 #endif 1400 #ifdef DDB 1401 Debugger (); 1402 #endif 1403 siopreset (sc); /* hard reset */ 1404 *status = -1; 1405 return 0; /* siopreset cleaned up */ 1406 } 1407 1408 void 1409 siop_select(sc) 1410 struct siop_softc *sc; 1411 { 1412 siop_regmap_p rp; 1413 struct siop_acb *acb = sc->sc_nexus; 1414 1415 #ifdef DEBUG 1416 if (siop_debug & 1) 1417 printf ("%s: select ", sc->sc_dev.dv_xname); 1418 #endif 1419 1420 rp = sc->sc_siopp; 1421 if (acb->xs->flags & SCSI_POLL || siop_no_dma) { 1422 sc->sc_flags |= SIOP_INTSOFF; 1423 sc->sc_flags &= ~SIOP_INTDEFER; 1424 if ((rp->siop_istat & 0x08) == 0) { 1425 rp->siop_sien = 0; 1426 rp->siop_dien = 0; 1427 } 1428 #if 0 1429 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1430 sc->sc_flags &= ~SIOP_INTSOFF; 1431 if ((rp->siop_istat & 0x08) == 0) { 1432 rp->siop_sien = sc->sc_sien; 1433 rp->siop_dien = sc->sc_dien; 1434 } 1435 #endif 1436 } 1437 #ifdef DEBUG 1438 if (siop_debug & 1) 1439 printf ("siop_select: target %x cmd %02x ds %p\n", 1440 acb->xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 1441 &sc->sc_nexus->ds); 1442 #endif 1443 1444 siop_start(sc, acb->xs->sc_link->scsipi_scsi.target, 1445 acb->xs->sc_link->scsipi_scsi.lun, 1446 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1447 1448 return; 1449 } 1450 1451 /* 1452 * 53C710 interrupt handler 1453 */ 1454 1455 void 1456 siopintr (sc) 1457 register struct siop_softc *sc; 1458 { 1459 siop_regmap_p rp; 1460 register u_char istat, dstat, sstat0; 1461 int status; 1462 int s = splbio(); 1463 1464 istat = sc->sc_istat; 1465 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1466 splx(s); 1467 return; 1468 } 1469 1470 /* Got a valid interrupt on this device */ 1471 rp = sc->sc_siopp; 1472 dstat = sc->sc_dstat; 1473 sstat0 = sc->sc_sstat0; 1474 if (dstat & SIOP_DSTAT_SIR) 1475 sc->sc_intcode = rp->siop_dsps; 1476 sc->sc_istat = 0; 1477 #ifdef DEBUG 1478 if (siop_debug & 1) 1479 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1480 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1481 if (!sc->sc_active) { 1482 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1483 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1484 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1485 } 1486 #endif 1487 1488 #ifdef DEBUG 1489 if (siop_debug & 5) { 1490 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1491 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1492 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1493 rp->siop_dsps, rp->siop_sbcl, 1494 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1495 } 1496 #endif 1497 if (sc->sc_flags & SIOP_INTDEFER) { 1498 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1499 rp->siop_sien = sc->sc_sien; 1500 rp->siop_dien = sc->sc_dien; 1501 } 1502 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1503 #if 1 1504 if (status == 0xff) 1505 printf ("siopintr: status == 0xff\n"); 1506 #endif 1507 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1508 #if 0 1509 if (rp->siop_sbcl & SIOP_BSY) { 1510 printf ("%s: SCSI bus busy at completion", 1511 sc->sc_dev.dv_xname); 1512 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1513 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 1514 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1515 rp->siop_dsp - sc->sc_scriptspa); 1516 } 1517 #endif 1518 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1519 sc->sc_nexus->stat[0] : -1); 1520 } 1521 } 1522 splx(s); 1523 } 1524 1525 /* 1526 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1527 * not be correct for other 53c710 boards. 1528 * 1529 */ 1530 void 1531 scsi_period_to_siop (sc, target) 1532 struct siop_softc *sc; 1533 int target; 1534 { 1535 int period, offset, sxfer, sbcl = 0; 1536 #ifdef DEBUG_SYNC 1537 int i; 1538 #endif 1539 1540 period = sc->sc_nexus->msg[4]; 1541 offset = sc->sc_nexus->msg[5]; 1542 #ifdef DEBUG_SYNC 1543 sxfer = 0; 1544 if (offset <= SIOP_MAX_OFFSET) 1545 sxfer = offset; 1546 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1547 if (period <= sync_tab[i].p) { 1548 sxfer |= sync_tab[i].r & 0x70; 1549 sbcl = sync_tab[i].r & 0x03; 1550 break; 1551 } 1552 } 1553 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1554 #endif 1555 for (sbcl = 1; sbcl < 4; ++sbcl) { 1556 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1557 if (sxfer >= 0 && sxfer <= 7) 1558 break; 1559 } 1560 if (sbcl > 3) { 1561 printf("siop sync: unable to compute sync params for period %dns\n", 1562 period * 4); 1563 /* 1564 * XXX need to pick a value we can do and renegotiate 1565 */ 1566 sxfer = sbcl = 0; 1567 } else { 1568 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1569 offset : SIOP_MAX_OFFSET); 1570 #ifdef DEBUG_SYNC 1571 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1572 period * 4, sxfer, sbcl); 1573 printf(" actual period %dns\n", 1574 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1575 #endif 1576 } 1577 sc->sc_sync[target].sxfer = sxfer; 1578 sc->sc_sync[target].sbcl = sbcl; 1579 #ifdef DEBUG_SYNC 1580 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1581 #endif 1582 } 1583 1584 #ifdef DEBUG 1585 1586 #if SIOP_TRACE_SIZE 1587 void 1588 siop_dump_trace() 1589 { 1590 int i; 1591 1592 printf("siop trace: next index %d\n", siop_trix); 1593 i = siop_trix; 1594 do { 1595 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1596 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1597 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1598 } while (i != siop_trix); 1599 } 1600 #endif 1601 1602 void 1603 siop_dump_acb(acb) 1604 struct siop_acb *acb; 1605 { 1606 u_char *b = (u_char *) &acb->cmd; 1607 int i; 1608 1609 printf("acb@%p ", acb); 1610 if (acb->xs == NULL) { 1611 printf("<unused>\n"); 1612 return; 1613 } 1614 printf("(%d:%d) flags %2x clen %2d cmd ", 1615 acb->xs->sc_link->scsipi_scsi.target, 1616 acb->xs->sc_link->scsipi_scsi.lun, acb->flags, acb->clen); 1617 for (i = acb->clen; i; --i) 1618 printf(" %02x", *b++); 1619 printf("\n"); 1620 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1621 acb->xs->datalen); 1622 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1623 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1624 } 1625 1626 void 1627 siop_dump(sc) 1628 struct siop_softc *sc; 1629 { 1630 struct siop_acb *acb; 1631 siop_regmap_p rp = sc->sc_siopp; 1632 int s; 1633 int i; 1634 1635 s = splbio(); 1636 #if SIOP_TRACE_SIZE 1637 siop_dump_trace(); 1638 #endif 1639 printf("%s@%p regs %p istat %x\n", 1640 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1641 if ((acb = sc->free_list.tqh_first) > 0) { 1642 printf("Free list:\n"); 1643 while (acb) { 1644 siop_dump_acb(acb); 1645 acb = acb->chain.tqe_next; 1646 } 1647 } 1648 if ((acb = sc->ready_list.tqh_first) > 0) { 1649 printf("Ready list:\n"); 1650 while (acb) { 1651 siop_dump_acb(acb); 1652 acb = acb->chain.tqe_next; 1653 } 1654 } 1655 if ((acb = sc->nexus_list.tqh_first) > 0) { 1656 printf("Nexus list:\n"); 1657 while (acb) { 1658 siop_dump_acb(acb); 1659 acb = acb->chain.tqe_next; 1660 } 1661 } 1662 if (sc->sc_nexus) { 1663 printf("Nexus:\n"); 1664 siop_dump_acb(sc->sc_nexus); 1665 } 1666 for (i = 0; i < 8; ++i) { 1667 if (sc->sc_tinfo[i].cmds > 2) { 1668 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1669 i, sc->sc_tinfo[i].cmds, 1670 sc->sc_tinfo[i].dconns, 1671 sc->sc_tinfo[i].senses, 1672 sc->sc_tinfo[i].lubusy); 1673 } 1674 } 1675 splx(s); 1676 } 1677 #endif 1678
Indexes created Thu Sep 25 16:09:42 GMT 2025