siop2.c revision 1.10
1 /* $NetBSD: siop2.c,v 1.10 1999/03/28 21:09:54 is Exp $ */ 2 3 /* 4 * Copyright (c) 1994,1998 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 53C720/770 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 62 #define ARCH_720 63 64 #include <amiga/dev/siopreg.h> 65 #include <amiga/dev/siopvar.h> 66 67 /* 68 * SCSI delays 69 * In u-seconds, primarily for state changes on the SPC. 70 */ 71 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 72 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 73 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 74 75 void siopng_select __P((struct siop_softc *)); 76 void siopngabort __P((struct siop_softc *, siop_regmap_p, char *)); 77 void siopngerror __P((struct siop_softc *, siop_regmap_p, u_char)); 78 void siopngstart __P((struct siop_softc *)); 79 int siopng_checkintr __P((struct siop_softc *, u_char, u_char, u_short, int *)); 80 void siopngreset __P((struct siop_softc *)); 81 void siopngsetdelay __P((int)); 82 void siopng_scsidone __P((struct siop_acb *, int)); 83 void siopng_sched __P((struct siop_softc *)); 84 int siopng_poll __P((struct siop_softc *, struct siop_acb *)); 85 void siopngintr __P((struct siop_softc *)); 86 void scsi_period_to_siopng __P((struct siop_softc *, int)); 87 void siopng_start __P((struct siop_softc *, int, int, u_char *, int, u_char *, int)); 88 void siopng_dump_acb __P((struct siop_acb *)); 89 90 /* 53C720/770 script */ 91 const 92 #include <amiga/dev/siop2_script.out> 93 94 /* default to not inhibit sync negotiation on any drive */ 95 u_char siopng_inhibit_sync[16] = { 96 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 97 }; /* initialize, so patchable */ 98 99 u_char siopng_inhibit_wide[16] = { 100 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 101 }; /* initialize, so patchable */ 102 103 u_char siopng_allow_disc[16] = { 104 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 105 }; 106 107 int siopng_no_dma = 0; 108 109 int siopng_reset_delay = 250; /* delay after reset, in milleseconds */ 110 111 int siopng_cmd_wait = SCSI_CMD_WAIT; 112 int siopng_data_wait = SCSI_DATA_WAIT; 113 int siopng_init_wait = SCSI_INIT_WAIT; 114 115 #define DEBUG_SYNC 116 117 #ifdef DEBUG 118 /* 119 * 0x01 - full debug 120 * 0x02 - DMA chaining 121 * 0x04 - siopngintr 122 * 0x08 - phase mismatch 123 * 0x10 - <not used> 124 * 0x20 - panic on unhandled exceptions 125 * 0x100 - disconnect/reselect 126 */ 127 int siopng_debug = 0; 128 int siopngsync_debug = 0; 129 int siopngdma_hits = 0; 130 int siopngdma_misses = 0; 131 int siopngchain_ints = 0; 132 int siopngstarts = 0; 133 int siopngints = 0; 134 int siopngphmm = 0; 135 #define SIOP_TRACE_SIZE 128 136 #define SIOP_TRACE(a,b,c,d) \ 137 siopng_trbuf[siopng_trix] = (a); \ 138 siopng_trbuf[siopng_trix+1] = (b); \ 139 siopng_trbuf[siopng_trix+2] = (c); \ 140 siopng_trbuf[siopng_trix+3] = (d); \ 141 siopng_trix = (siopng_trix + 4) & (SIOP_TRACE_SIZE - 1); 142 u_char siopng_trbuf[SIOP_TRACE_SIZE]; 143 int siopng_trix; 144 void siopng_dump __P((struct siop_softc *)); 145 void siopng_dump_trace __P((void)); 146 #else 147 #define SIOP_TRACE(a,b,c,d) 148 #endif 149 150 151 static char *siopng_chips[] = { 152 "720", "720SE", "770", "0x3", 153 "810A", "0x5", "0x6", "0x7", 154 "0x8", "0x9", "0xA", "0xB", 155 "0xC", "0xD", "0xE", "0xF", 156 }; 157 158 /* 159 * default minphys routine for siopng based controllers 160 */ 161 void 162 siopng_minphys(bp) 163 struct buf *bp; 164 { 165 166 /* 167 * No max transfer at this level. 168 */ 169 minphys(bp); 170 } 171 172 /* 173 * used by specific siopng controller 174 * 175 */ 176 int 177 siopng_scsicmd(xs) 178 struct scsipi_xfer *xs; 179 { 180 struct siop_acb *acb; 181 struct siop_softc *sc; 182 struct scsipi_link *slp; 183 int flags, s; 184 185 slp = xs->sc_link; 186 sc = slp->adapter_softc; 187 flags = xs->flags; 188 189 /* XXXX ?? */ 190 if (flags & SCSI_DATA_UIO) 191 panic("siopng: scsi data uio requested"); 192 193 /* XXXX ?? */ 194 if (sc->sc_nexus && flags & SCSI_POLL) 195 /* panic("siopng_scsicmd: busy");*/ 196 printf("siopng_scsicmd: busy\n"); 197 198 s = splbio(); 199 acb = sc->free_list.tqh_first; 200 if (acb) { 201 TAILQ_REMOVE(&sc->free_list, acb, chain); 202 } 203 splx(s); 204 205 if (acb == NULL) { 206 xs->error = XS_DRIVER_STUFFUP; 207 return(TRY_AGAIN_LATER); 208 } 209 210 acb->flags = ACB_ACTIVE; 211 acb->xs = xs; 212 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 213 acb->clen = xs->cmdlen; 214 acb->daddr = xs->data; 215 acb->dleft = xs->datalen; 216 217 s = splbio(); 218 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 219 220 if (sc->sc_nexus == NULL) 221 siopng_sched(sc); 222 223 splx(s); 224 225 if (flags & SCSI_POLL || siopng_no_dma) 226 return(siopng_poll(sc, acb)); 227 return(SUCCESSFULLY_QUEUED); 228 } 229 230 int 231 siopng_poll(sc, acb) 232 struct siop_softc *sc; 233 struct siop_acb *acb; 234 { 235 siop_regmap_p rp = sc->sc_siopp; 236 struct scsipi_xfer *xs = acb->xs; 237 int i; 238 int status; 239 u_char istat; 240 u_char dstat; 241 u_short sist; 242 int s; 243 int to; 244 245 s = splbio(); 246 to = xs->timeout / 1000; 247 if (sc->nexus_list.tqh_first) 248 printf("%s: siopng_poll called with disconnected device\n", 249 sc->sc_dev.dv_xname); 250 for (;;) { 251 /* use cmd_wait values? */ 252 i = 50000; 253 /* XXX spl0(); */ 254 while (((istat = rp->siop_istat) & 255 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 256 if (--i <= 0) { 257 #ifdef DEBUG 258 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 259 xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 260 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp, 261 rp->siop_dsp - sc->sc_scriptspa, 262 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 263 #endif 264 i = 50000; 265 --to; 266 if (to <= 0) { 267 siopngreset(sc); 268 return(COMPLETE); 269 } 270 } 271 delay(20); 272 } 273 sist = rp->siop_sist; 274 dstat = rp->siop_dstat; 275 if (siopng_checkintr(sc, istat, dstat, sist, &status)) { 276 if (acb != sc->sc_nexus) 277 printf("%s: siopng_poll disconnected device completed\n", 278 sc->sc_dev.dv_xname); 279 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 280 sc->sc_flags &= ~SIOP_INTSOFF; 281 rp->siop_sien = sc->sc_sien; 282 rp->siop_dien = sc->sc_dien; 283 } 284 siopng_scsidone(sc->sc_nexus, status); 285 } 286 if (xs->flags & ITSDONE) 287 break; 288 } 289 splx(s); 290 return (COMPLETE); 291 } 292 293 /* 294 * start next command that's ready 295 */ 296 void 297 siopng_sched(sc) 298 struct siop_softc *sc; 299 { 300 struct scsipi_link *slp; 301 struct siop_acb *acb; 302 int i; 303 304 #ifdef DEBUG 305 if (sc->sc_nexus) { 306 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n", 307 sc->sc_dev.dv_xname, sc->sc_nexus, 308 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 309 sc->ready_list.tqh_first, 310 sc->ready_list.tqh_first->xs->sc_link->scsipi_scsi.target); 311 return; 312 } 313 #endif 314 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 315 slp = acb->xs->sc_link; 316 i = slp->scsipi_scsi.target; 317 if(!(sc->sc_tinfo[i].lubusy & (1 << slp->scsipi_scsi.lun))) { 318 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 319 320 TAILQ_REMOVE(&sc->ready_list, acb, chain); 321 sc->sc_nexus = acb; 322 slp = acb->xs->sc_link; 323 ti = &sc->sc_tinfo[slp->scsipi_scsi.target]; 324 ti->lubusy |= (1 << slp->scsipi_scsi.lun); 325 break; 326 } 327 } 328 329 if (acb == NULL) { 330 #ifdef DEBUGXXX 331 printf("%s: siopng_sched didn't find ready command\n", 332 sc->sc_dev.dv_xname); 333 #endif 334 return; 335 } 336 337 if (acb->xs->flags & SCSI_RESET) 338 siopngreset(sc); 339 340 #if 0 341 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 342 #endif 343 ++sc->sc_active; 344 siopng_select(sc); 345 } 346 347 void 348 siopng_scsidone(acb, stat) 349 struct siop_acb *acb; 350 int stat; 351 { 352 struct scsipi_xfer *xs; 353 struct scsipi_link *slp; 354 struct siop_softc *sc; 355 int dosched = 0; 356 357 if (acb == NULL || (xs = acb->xs) == NULL) { 358 #ifdef DIAGNOSTIC 359 printf("siopng_scsidone: NULL acb or scsipi_xfer\n"); 360 #if defined(DEBUG) && defined(DDB) 361 Debugger(); 362 #endif 363 #endif 364 return; 365 } 366 slp = xs->sc_link; 367 sc = slp->adapter_softc; 368 /* 369 * is this right? 370 */ 371 xs->status = stat; 372 373 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 374 if (stat == SCSI_CHECK) { 375 struct scsipi_sense *ss = (void *)&acb->cmd; 376 bzero(ss, sizeof(*ss)); 377 ss->opcode = REQUEST_SENSE; 378 ss->byte2 = slp->scsipi_scsi.lun << 5; 379 ss->length = sizeof(struct scsipi_sense_data); 380 acb->clen = sizeof(*ss); 381 acb->daddr = (char *)&xs->sense.scsi_sense; 382 acb->dleft = sizeof(struct scsipi_sense_data); 383 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 384 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 385 --sc->sc_active; 386 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy &= 387 ~(1 << slp->scsipi_scsi.lun); 388 sc->sc_tinfo[slp->scsipi_scsi.target].senses++; 389 if (sc->sc_nexus == acb) { 390 sc->sc_nexus = NULL; 391 siopng_sched(sc); 392 } 393 SIOP_TRACE('d','s',0,0) 394 return; 395 } 396 } 397 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 398 xs->error = XS_SENSE; 399 } else { 400 xs->resid = 0; /* XXXX */ 401 } 402 #if whataboutthisone 403 case SCSI_BUSY: 404 xs->error = XS_BUSY; 405 break; 406 #endif 407 xs->flags |= ITSDONE; 408 409 /* 410 * Remove the ACB from whatever queue it's on. We have to do a bit of 411 * a hack to figure out which queue it's on. Note that it is *not* 412 * necessary to cdr down the ready queue, but we must cdr down the 413 * nexus queue and see if it's there, so we can mark the unit as no 414 * longer busy. This code is sickening, but it works. 415 */ 416 if (acb == sc->sc_nexus) { 417 sc->sc_nexus = NULL; 418 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy &= 419 ~(1<<slp->scsipi_scsi.lun); 420 if (sc->ready_list.tqh_first) 421 dosched = 1; /* start next command */ 422 --sc->sc_active; 423 SIOP_TRACE('d','a',stat,0) 424 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 425 TAILQ_REMOVE(&sc->ready_list, acb, chain); 426 SIOP_TRACE('d','r',stat,0) 427 } else { 428 register struct siop_acb *acb2; 429 for (acb2 = sc->nexus_list.tqh_first; acb2; 430 acb2 = acb2->chain.tqe_next) 431 if (acb2 == acb) { 432 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 433 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy 434 &= ~(1<<slp->scsipi_scsi.lun); 435 --sc->sc_active; 436 break; 437 } 438 if (acb2) 439 ; 440 else if (acb->chain.tqe_next) { 441 TAILQ_REMOVE(&sc->ready_list, acb, chain); 442 --sc->sc_active; 443 } else { 444 printf("%s: can't find matching acb\n", 445 sc->sc_dev.dv_xname); 446 #ifdef DDB 447 /* Debugger(); */ 448 #endif 449 } 450 SIOP_TRACE('d','n',stat,0); 451 } 452 /* Put it on the free list. */ 453 acb->flags = ACB_FREE; 454 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 455 456 sc->sc_tinfo[slp->scsipi_scsi.target].cmds++; 457 458 scsipi_done(xs); 459 460 if (dosched && sc->sc_nexus == NULL) 461 siopng_sched(sc); 462 } 463 464 void 465 siopngabort(sc, rp, where) 466 register struct siop_softc *sc; 467 siop_regmap_p rp; 468 char *where; 469 { 470 #ifdef fix_this 471 int i; 472 #endif 473 474 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n", 475 sc->sc_dev.dv_xname, 476 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist, 477 rp->siop_sien, rp->siop_sbcl); 478 siopng_dump_registers(sc); 479 480 if (sc->sc_active > 0) { 481 #ifdef TODO 482 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 483 WAIT_CIP (rp); 484 485 GET_SBIC_asr (rp, asr); 486 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 487 { 488 /* ok, get more drastic.. */ 489 490 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 491 delay(25); 492 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 493 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 494 495 return; 496 } 497 498 do 499 { 500 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 501 GET_SBIC_csr (rp, csr); 502 } 503 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 504 && (csr != SBIC_CSR_CMD_INVALID)); 505 #endif 506 507 /* lets just hope it worked.. */ 508 #ifdef fix_this 509 for (i = 0; i < 2; ++i) { 510 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 511 sc->sc_cur) { 512 printf ("siopngabort: cleanup!\n"); 513 sc->sc_iob[i].sc_xs = NULL; 514 } 515 } 516 #endif /* fix_this */ 517 /* sc->sc_active = 0; */ 518 } 519 } 520 521 void 522 siopnginitialize(sc) 523 struct siop_softc *sc; 524 { 525 int i; 526 u_int inhibit_sync; 527 extern u_long scsi_nosync; 528 extern int shift_nosync; 529 530 /* 531 * Need to check that scripts is on a long word boundary 532 * Also should verify that dev doesn't span non-contiguous 533 * physical pages. 534 */ 535 sc->sc_scriptspa = kvtop((caddr_t)siopng_scripts); 536 537 /* 538 * malloc sc_acb to ensure that DS is on a long word boundary. 539 */ 540 541 MALLOC(sc->sc_acb, struct siop_acb *, 542 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 543 if (sc->sc_acb == NULL) 544 panic("siopnginitialize: ACB malloc failed!"); 545 546 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 547 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 548 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 549 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 550 if (sc->sc_minsync < 25) 551 sc->sc_minsync = 25; 552 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */ 553 if (sc->sc_clock_freq <= 25) { 554 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 555 sc->sc_tcp[0] = sc->sc_tcp[1]; 556 } else if (sc->sc_clock_freq <= 37) { 557 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 558 sc->sc_tcp[0] = sc->sc_tcp[2]; 559 } else if (sc->sc_clock_freq <= 50) { 560 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 561 sc->sc_tcp[0] = sc->sc_tcp[3]; 562 } else { 563 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 564 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 565 } 566 567 if (scsi_nosync) { 568 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff; 569 shift_nosync += 16; /* XXX maxtarget */ 570 #ifdef DEBUG 571 if (inhibit_sync) 572 printf("%s: Inhibiting synchronous transfer %02x\n", 573 sc->sc_dev.dv_xname, inhibit_sync); 574 #endif 575 for (i = 0; i < 16; ++i) /* XXX maxtarget */ 576 if (inhibit_sync & (1 << i)) 577 siopng_inhibit_sync[i] = 1; 578 } 579 580 siopngreset (sc); 581 } 582 583 void 584 siopngreset(sc) 585 struct siop_softc *sc; 586 { 587 siop_regmap_p rp; 588 u_int i, s; 589 u_short dummy; 590 struct siop_acb *acb; 591 592 rp = sc->sc_siopp; 593 594 if (sc->sc_flags & SIOP_ALIVE) 595 siopngabort(sc, rp, "reset"); 596 597 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 598 599 s = splbio(); 600 601 /* 602 * Reset the chip 603 * XXX - is this really needed? 604 */ 605 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 606 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 607 rp->siop_istat &= ~SIOP_ISTAT_RST; 608 /* 609 * Reset SCSI bus (do we really want this?) 610 */ 611 rp->siop_sien = 0; 612 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 613 delay(1); 614 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 615 616 /* 617 * Set up various chip parameters 618 */ 619 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */ 620 delay(20); 621 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */ 622 rp->siop_scntl3 = 0x15; /* SCF/CCF*/ 623 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */ 624 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */ 625 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG; 626 rp->siop_dcntl = sc->sc_dcntl; 627 rp->siop_dmode = 0xc0; /* XXX burst length */ 628 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 629 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 630 rp->siop_scid = sc->sc_link.scsipi_scsi.adapter_target | 631 SIOP_SCID_RRE | SIOP_SCID_SRE; 632 rp->siop_respid = 1 << sc->sc_link.scsipi_scsi.adapter_target; 633 rp->siop_dwt = 0x00; 634 rp->siop_stime0 = 0x0c; /* XXXXX check */ 635 636 /* will need to re-negotiate sync xfers */ 637 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 638 639 i = rp->siop_istat; 640 if (i & SIOP_ISTAT_SIP) 641 dummy = rp->siop_sist; 642 if (i & SIOP_ISTAT_DIP) 643 dummy = rp->siop_dstat; 644 645 splx (s); 646 647 delay (siopng_reset_delay * 1000); 648 /* 649 * Check if upper half of SCSI bus is unterminated, and disallow 650 * disconnections if it appears to be unterminated. 651 */ 652 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 653 printf(" NO WIDE TERM"); 654 /* XXX need to restrict maximum target ID as well? */ 655 sc->sc_link.scsipi_scsi.max_target = 7; 656 for (i = 0; i < 16; ++i) { 657 siopng_allow_disc[i] = 0; 658 siopng_inhibit_wide[i] |= 0x80; 659 } 660 } 661 662 printf("siopng type %s id %d reset V%d\n", 663 siopng_chips[rp->siop_macntl>>4], 664 sc->sc_link.scsipi_scsi.adapter_target, 665 rp->siop_ctest3 >> 4); 666 667 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 668 TAILQ_INIT(&sc->ready_list); 669 TAILQ_INIT(&sc->nexus_list); 670 TAILQ_INIT(&sc->free_list); 671 sc->sc_nexus = NULL; 672 acb = sc->sc_acb; 673 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 674 for (i = 0; i < SIOP_NACB; i++) { 675 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 676 acb++; 677 } 678 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 679 } else { 680 if (sc->sc_nexus != NULL) { 681 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 682 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 683 } 684 while ((acb = sc->nexus_list.tqh_first) > 0) { 685 acb->xs->error = XS_DRIVER_STUFFUP; 686 siopng_scsidone(acb, acb->stat[0]); 687 } 688 } 689 690 sc->sc_flags |= SIOP_ALIVE; 691 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 692 /* enable SCSI and DMA interrupts */ 693 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 694 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 695 SIOP_SIEN_RST | SIOP_SIEN_PAR; 696 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 697 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 698 rp->siop_sien = sc->sc_sien; 699 rp->siop_dien = sc->sc_dien; 700 /*siopng_dump_registers(sc);*/ 701 } 702 703 /* 704 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 705 */ 706 707 void 708 siopng_start (sc, target, lun, cbuf, clen, buf, len) 709 struct siop_softc *sc; 710 int target; 711 int lun; 712 u_char *cbuf; 713 int clen; 714 u_char *buf; 715 int len; 716 { 717 siop_regmap_p rp = sc->sc_siopp; 718 int nchain; 719 int count, tcount; 720 char *addr, *dmaend; 721 struct siop_acb *acb = sc->sc_nexus; 722 #ifdef DEBUG 723 int i; 724 #endif 725 726 #ifdef DEBUG 727 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 728 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 729 rp, &siopng_scripts, &acb->ds, sc->sc_active); 730 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 731 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 732 rp->siop_sien, rp->siop_dien); 733 #ifdef DDB 734 /*Debugger();*/ 735 #endif 736 } 737 #endif 738 acb->msgout[0] = MSG_IDENTIFY | lun; 739 if (siopng_allow_disc[target] & 2 || 740 (siopng_allow_disc[target] && len == 0)) 741 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 742 acb->status = 0; 743 acb->stat[0] = -1; 744 acb->msg[0] = -1; 745 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 746 (sc->sc_sync[target].scntl3 << 24); 747 acb->ds.idlen = 1; 748 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 749 acb->ds.cmdlen = clen; 750 acb->ds.cmdbuf = (char *) kvtop(cbuf); 751 acb->ds.stslen = 1; 752 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 753 acb->ds.msglen = 1; 754 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 755 acb->msg[1] = -1; 756 acb->ds.msginlen = 1; 757 acb->ds.extmsglen = 1; 758 acb->ds.synmsglen = 3; 759 acb->ds.msginbuf = acb->ds.msgbuf + 1; 760 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 761 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 762 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 763 764 if (sc->sc_sync[target].state == NEG_WIDE) { 765 if (siopng_inhibit_wide[target]) { 766 sc->sc_sync[target].state = NEG_SYNC; 767 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 768 #ifdef DEBUG 769 if (siopngsync_debug) 770 printf ("Forcing target %d narrow\n", target); 771 #endif 772 } 773 else { 774 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 775 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 776 acb->msg[2] = -1; 777 acb->msgout[1] = MSG_EXT_MESSAGE; 778 acb->msgout[2] = 2; 779 acb->msgout[3] = MSG_WIDE_REQ; 780 acb->msgout[4] = 1; 781 acb->ds.idlen = 5; 782 acb->ds.synmsglen = 2; 783 sc->sc_sync[target].state = NEG_WAITW; 784 #ifdef DEBUG 785 if (siopngsync_debug) 786 printf("Sending wide request to target %d\n", target); 787 #endif 788 } 789 } 790 if (sc->sc_sync[target].state == NEG_SYNC) { 791 if (siopng_inhibit_sync[target]) { 792 sc->sc_sync[target].state = NEG_DONE; 793 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 794 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 795 sc->sc_sync[target].sxfer = 0; 796 #ifdef DEBUG 797 if (siopngsync_debug) 798 printf ("Forcing target %d asynchronous\n", target); 799 #endif 800 } 801 else { 802 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 803 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 804 acb->msg[2] = -1; 805 acb->msgout[1] = MSG_EXT_MESSAGE; 806 acb->msgout[2] = 3; 807 acb->msgout[3] = MSG_SYNC_REQ; 808 #ifdef MAXTOR_SYNC_KLUDGE 809 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 810 #else 811 acb->msgout[4] = sc->sc_minsync; 812 #endif 813 acb->msgout[5] = SIOP_MAX_OFFSET; 814 acb->ds.idlen = 6; 815 sc->sc_sync[target].state = NEG_WAITS; 816 #ifdef DEBUG 817 if (siopngsync_debug) 818 printf ("Sending sync request to target %d\n", target); 819 #endif 820 } 821 } 822 823 /* 824 * Build physical DMA addresses for scatter/gather I/O 825 */ 826 acb->iob_buf = buf; 827 acb->iob_len = len; 828 acb->iob_curbuf = acb->iob_curlen = 0; 829 nchain = 0; 830 count = len; 831 addr = buf; 832 dmaend = NULL; 833 while (count > 0) { 834 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 835 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 836 tcount = count; 837 838 #if DEBUG_ONLY_IF_DESPERATE 839 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 840 nchain, count, tcount, addr, 841 acb->ds.chain[nchain].databuf); 842 #endif 843 acb->ds.chain[nchain].datalen = tcount; 844 addr += tcount; 845 count -= tcount; 846 if (acb->ds.chain[nchain].databuf == dmaend) { 847 dmaend += acb->ds.chain[nchain].datalen; 848 acb->ds.chain[nchain].datalen = 0; 849 acb->ds.chain[--nchain].datalen += tcount; 850 #ifdef DEBUG 851 ++siopngdma_hits; 852 #endif 853 } 854 else { 855 dmaend = acb->ds.chain[nchain].databuf + 856 acb->ds.chain[nchain].datalen; 857 acb->ds.chain[nchain].datalen = tcount; 858 #ifdef DEBUG 859 if (nchain) /* Don't count miss on first one */ 860 ++siopngdma_misses; 861 #endif 862 } 863 ++nchain; 864 } 865 #ifdef DEBUG 866 if (nchain != 1 && len != 0 && siopng_debug & 3) { 867 printf ("DMA chaining set: %d\n", nchain); 868 for (i = 0; i < nchain; ++i) { 869 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 870 acb->ds.chain[i].datalen); 871 } 872 } 873 #endif 874 875 /* push data cache for all data the 53c720/770 needs to access */ 876 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 877 dma_cachectl (cbuf, clen); 878 if (buf != NULL && len != 0) 879 dma_cachectl (buf, len); 880 #ifdef DEBUG 881 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 882 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 883 rp, &siopng_scripts, &acb->ds, sc->sc_active); 884 #ifdef DDB 885 /*Debugger();*/ 886 #endif 887 } 888 #endif 889 if (sc->nexus_list.tqh_first == NULL) { 890 if (rp->siop_istat & SIOP_ISTAT_CON) 891 printf("%s: siopng_select while connected?\n", 892 sc->sc_dev.dv_xname); 893 rp->siop_temp = 0; 894 #ifndef FIXME 895 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 896 #endif 897 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 898 rp->siop_dsp = sc->sc_scriptspa; 899 SIOP_TRACE('s',1,0,0) 900 } else { 901 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 902 rp->siop_istat = SIOP_ISTAT_SIGP; 903 SIOP_TRACE('s',2,0,0); 904 } 905 else { 906 SIOP_TRACE('s',3,rp->siop_istat,0); 907 } 908 } 909 #ifdef DEBUG 910 ++siopngstarts; 911 #endif 912 } 913 914 /* 915 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 916 */ 917 918 int 919 siopng_checkintr(sc, istat, dstat, sist, status) 920 struct siop_softc *sc; 921 u_char istat; 922 u_char dstat; 923 u_short sist; 924 int *status; 925 { 926 siop_regmap_p rp = sc->sc_siopp; 927 struct siop_acb *acb = sc->sc_nexus; 928 int target = 0; 929 int dfifo, dbc, sstat0, sstat1, sstat2; 930 931 dfifo = rp->siop_dfifo; 932 dbc = rp->siop_dbc0; 933 sstat0 = rp->siop_sstat0; 934 sstat1 = rp->siop_sstat1; 935 sstat2 = rp->siop_sstat2; 936 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 937 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 938 ; 939 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 940 #ifdef DEBUG 941 ++siopngints; 942 #if 0 943 if (siopng_debug & 0x100) { 944 DCIAS(&acb->stat[0]); /* XXX */ 945 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 946 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 947 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 948 acb->msg[0], acb->msg[1], acb->msg[2], 949 acb->msg[3], acb->msg[4], acb->msg[5]); 950 } 951 #endif 952 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 953 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 954 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 955 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 956 sc->sc_scriptspa + sizeof(siopng_scripts)); 957 printf(" istat %x dstat %x sist %x\n", 958 istat, dstat, sist); 959 #ifdef DDB 960 Debugger(); 961 #endif 962 } 963 #endif 964 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 965 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 966 /* Normal completion status, or check condition */ 967 #ifdef DEBUG 968 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 969 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 970 kvtop((caddr_t)&acb->ds)); 971 panic("*** siopng DSA invalid ***"); 972 } 973 #endif 974 target = acb->xs->sc_link->scsipi_scsi.target; 975 if (sc->sc_sync[target].state == NEG_WAITW) { 976 if (acb->msg[1] == 0xff) 977 printf ("%s: target %d ignored wide request\n", 978 sc->sc_dev.dv_xname, target); 979 else if (acb->msg[1] == MSG_REJECT) 980 printf ("%s: target %d rejected wide request\n", 981 sc->sc_dev.dv_xname, target); 982 else { 983 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 984 sc->sc_dev.dv_xname, target, acb->msg[1], 985 acb->msg[2], acb->msg[3], acb->msg[4]); 986 if (acb->msg[1] == MSG_EXT_MESSAGE && 987 acb->msg[2] == 2 && 988 acb->msg[3] == MSG_WIDE_REQ) 989 sc->sc_sync[target].scntl3 = acb->msg[4] ? 990 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 991 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 992 } 993 sc->sc_sync[target].state = NEG_SYNC; 994 } 995 if (sc->sc_sync[target].state == NEG_WAITS) { 996 if (acb->msg[1] == 0xff) 997 printf ("%s: target %d ignored sync request\n", 998 sc->sc_dev.dv_xname, target); 999 else if (acb->msg[1] == MSG_REJECT) 1000 printf ("%s: target %d rejected sync request\n", 1001 sc->sc_dev.dv_xname, target); 1002 else 1003 /* XXX - need to set sync transfer parameters */ 1004 printf("%s: target %d (sync) %02x %02x %02x\n", 1005 sc->sc_dev.dv_xname, target, acb->msg[1], 1006 acb->msg[2], acb->msg[3]); 1007 sc->sc_sync[target].state = NEG_DONE; 1008 } 1009 dma_cachectl(&acb->stat[0], 1); 1010 *status = acb->stat[0]; 1011 #ifdef DEBUG 1012 if (rp->siop_sbcl & SIOP_BSY) { 1013 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1014 rp, &siopng_scripts, &acb->ds);*/ 1015 #ifdef DDB 1016 /*Debugger();*/ 1017 #endif 1018 } 1019 if (acb->msg[0] != 0x00) 1020 printf("%s: message was not COMMAND COMPLETE: %x\n", 1021 sc->sc_dev.dv_xname, acb->msg[0]); 1022 #endif 1023 if (sc->nexus_list.tqh_first) 1024 rp->siop_dcntl |= SIOP_DCNTL_STD; 1025 return 1; 1026 } 1027 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1028 target = acb->xs->sc_link->scsipi_scsi.target; 1029 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1030 acb->msg[3] == MSG_WIDE_REQ) { 1031 #ifdef DEBUG 1032 if (siopngsync_debug) 1033 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1034 acb->msg[0], acb->msg[1], acb->msg[2], 1035 acb->msg[3], acb->msg[4], acb->msg[5]); 1036 #endif 1037 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1038 if (acb->msg[2] == 2 && 1039 acb->msg[3] == MSG_WIDE_REQ && 1040 acb->msg[4] != 0) { 1041 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1042 printf ("%s: target %d now wide %d\n", 1043 sc->sc_dev.dv_xname, target, 1044 acb->msg[4]); 1045 } 1046 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1047 if (sc->sc_sync[target].state == NEG_WAITW) { 1048 sc->sc_sync[target].state = NEG_SYNC; 1049 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1050 return(0); 1051 } 1052 rp->siop_dcntl |= SIOP_DCNTL_STD; 1053 sc->sc_sync[target].state = NEG_SYNC; 1054 return (0); 1055 } 1056 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1057 acb->msg[3] == MSG_SYNC_REQ) { 1058 #ifdef DEBUG 1059 if (siopngsync_debug) 1060 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1061 acb->msg[0], acb->msg[1], acb->msg[2], 1062 acb->msg[3], acb->msg[4], acb->msg[5]); 1063 #endif 1064 sc->sc_sync[target].sxfer = 0; 1065 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1066 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1067 if (acb->msg[2] == 3 && 1068 acb->msg[3] == MSG_SYNC_REQ && 1069 acb->msg[5] != 0) { 1070 #ifdef MAXTOR_KLUDGE 1071 /* 1072 * Kludge for my Maxtor XT8580S 1073 * It accepts whatever we request, even 1074 * though it won't work. So we ask for 1075 * a short period than we can handle. If 1076 * the device says it can do it, use 208ns. 1077 * If the device says it can do less than 1078 * 100ns, then we limit it to 100ns. 1079 */ 1080 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1081 #ifdef DEBUG 1082 printf ("%d: target %d wanted %dns period\n", 1083 sc->sc_dev.dv_xname, target, 1084 acb->msg[4] * 4); 1085 #endif 1086 if (acb->msg[4] == 50 / 4) 1087 acb->msg[4] = 208 / 4; 1088 else 1089 acb->msg[4] = 100 / 4; 1090 } 1091 #endif /* MAXTOR_KLUDGE */ 1092 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1093 sc->sc_dev.dv_xname, target, 1094 acb->msg[4] * 4, acb->msg[5]); 1095 scsi_period_to_siopng (sc, target); 1096 } 1097 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1098 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1099 if (sc->sc_sync[target].state == NEG_WAITS) { 1100 sc->sc_sync[target].state = NEG_DONE; 1101 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1102 return(0); 1103 } 1104 rp->siop_dcntl |= SIOP_DCNTL_STD; 1105 sc->sc_sync[target].state = NEG_DONE; 1106 return (0); 1107 } 1108 /* XXX - not SDTR message */ 1109 } 1110 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1111 #ifdef DEBUG 1112 ++siopngphmm; 1113 if (acb == NULL) 1114 printf("%s: Phase mismatch with no active command?\n", 1115 sc->sc_dev.dv_xname); 1116 #endif 1117 if (acb->iob_len) { 1118 int adjust; 1119 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1120 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1121 ++adjust; 1122 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1123 ++adjust; 1124 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1125 ++adjust; 1126 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1127 ++adjust; 1128 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1129 acb->iob_curlen += adjust; 1130 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1131 #ifdef DEBUG 1132 if (siopng_debug & 0x100) { 1133 int i; 1134 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1135 acb->iob_curbuf, acb->iob_curlen, dfifo, 1136 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1137 if (acb->ds.chain[1].datalen) { 1138 for (i = 0; acb->ds.chain[i].datalen; ++i) 1139 printf("chain[%d] addr %p len %lx\n", 1140 i, acb->ds.chain[i].databuf, 1141 acb->ds.chain[i].datalen); 1142 } 1143 } 1144 #endif 1145 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1146 } 1147 #ifdef DEBUG 1148 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1149 if (siopng_debug & 9) 1150 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1151 rp->siop_sbcl, 1152 rp->siop_dsp - sc->sc_scriptspa, 1153 *((long *)&rp->siop_dcmd)); 1154 #endif 1155 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1156 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1157 rp->siop_sbcl, rp->siop_dsp); 1158 #if defined(DEBUG) && defined(DDB) 1159 Debugger(); 1160 #endif 1161 } 1162 switch (rp->siop_sbcl & 7) { 1163 case 0: /* data out */ 1164 case 1: /* data in */ 1165 case 2: /* status */ 1166 case 3: /* command */ 1167 case 6: /* message in */ 1168 case 7: /* message out */ 1169 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1170 break; 1171 default: 1172 goto bad_phase; 1173 } 1174 return 0; 1175 } 1176 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1177 #ifdef DEBUG 1178 if (acb == NULL) 1179 printf("%s: Select timeout with no active command?\n", 1180 sc->sc_dev.dv_xname); 1181 if (rp->siop_sbcl & SIOP_BSY) { 1182 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1183 rp, &siopng_scripts, &acb->ds); 1184 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1185 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1186 if (!(rp->siop_sbcl & SIOP_BSY)) { 1187 printf ("Yikes, it's not busy now!\n"); 1188 #if 0 1189 *status = -1; 1190 if (sc->nexus_list.tqh_first) 1191 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1192 return 1; 1193 #endif 1194 } 1195 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1196 return (0); 1197 #ifdef DDB 1198 Debugger(); 1199 #endif 1200 } 1201 #endif 1202 *status = -1; 1203 acb->xs->error = XS_SELTIMEOUT; 1204 if (sc->nexus_list.tqh_first) 1205 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1206 return 1; 1207 } 1208 if (acb) 1209 target = acb->xs->sc_link->scsipi_scsi.target; 1210 else 1211 target = 7; 1212 if (sist & SIOP_SIST_UDC) { 1213 #ifdef DEBUG 1214 if (acb == NULL) 1215 printf("%s: Unexpected disconnect with no active command?\n", 1216 sc->sc_dev.dv_xname); 1217 printf ("%s: target %d disconnected unexpectedly\n", 1218 sc->sc_dev.dv_xname, target); 1219 siopng_dump_registers(sc); 1220 siopng_dump(sc); 1221 #endif 1222 #if 0 1223 siopngabort (sc, rp, "siopngchkintr"); 1224 #endif 1225 *status = STS_BUSY; 1226 if (sc->nexus_list.tqh_first) 1227 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1228 return (acb != NULL); 1229 } 1230 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1231 rp->siop_dsps == 0xff02)) { 1232 #ifdef DEBUG 1233 if (siopng_debug & 0x100) 1234 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", 1235 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1236 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1237 acb->iob_curbuf, acb->iob_curlen, 1238 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1239 #endif 1240 if (acb == NULL) { 1241 printf("%s: Disconnect with no active command?\n", 1242 sc->sc_dev.dv_xname); 1243 return (0); 1244 } 1245 /* 1246 * XXXX need to update iob_curbuf/iob_curlen to reflect 1247 * current data transferred. If device disconnected in 1248 * the middle of a DMA block, they should already be set 1249 * by the phase change interrupt. If the disconnect 1250 * occurs on a DMA block boundary, we have to figure out 1251 * which DMA block it was. 1252 */ 1253 if (acb->iob_len && rp->siop_temp) { 1254 int n = rp->siop_temp - sc->sc_scriptspa; 1255 1256 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1257 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1258 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1259 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1260 if (n < Ent_datain) 1261 n = (n - Ent_dataout) / 16; 1262 else 1263 n = (n - Ent_datain) / 16; 1264 if (n <= 0 && n > DMAMAXIO) 1265 printf("TEMP invalid %d\n", n); 1266 else { 1267 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1268 acb->iob_curlen = acb->ds.chain[n].datalen; 1269 } 1270 #ifdef DEBUG 1271 if (siopng_debug & 0x100) { 1272 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1273 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1274 acb->iob_curlen); 1275 } 1276 #endif 1277 } 1278 /* 1279 * If data transfer was interrupted by disconnect, iob_curbuf 1280 * and iob_curlen should reflect the point of interruption. 1281 * Adjust the DMA chain so that the data transfer begins 1282 * at the appropriate place upon reselection. 1283 * XXX This should only be done on save data pointer message? 1284 */ 1285 if (acb->iob_curlen) { 1286 int i, j; 1287 1288 #ifdef DEBUG 1289 if (siopng_debug & 0x100) 1290 printf ("%s: adjusting DMA chain\n", 1291 sc->sc_dev.dv_xname); 1292 if (rp->siop_dsps == 0xff02) 1293 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1294 sc->sc_dev.dv_xname, 1 << target); 1295 #endif 1296 for (i = 0; i < DMAMAXIO; ++i) { 1297 if (acb->ds.chain[i].datalen == 0) 1298 break; 1299 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1300 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1301 acb->ds.chain[i].datalen)) 1302 break; 1303 } 1304 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1305 printf("couldn't find saved data pointer: "); 1306 printf("curbuf %lx curlen %lx i %d\n", 1307 acb->iob_curbuf, acb->iob_curlen, i); 1308 #ifdef DDB 1309 Debugger(); 1310 #endif 1311 } 1312 #ifdef DEBUG 1313 if (siopng_debug & 0x100) 1314 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1315 acb->ds.chain[0].databuf, 1316 acb->ds.chain[0].datalen, 1317 acb->iob_curbuf, 1318 acb->iob_curlen); 1319 #endif 1320 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1321 acb->ds.chain[0].datalen = acb->iob_curlen; 1322 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1323 #ifdef DEBUG 1324 if (siopng_debug & 0x100) 1325 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1326 acb->ds.chain[j].databuf, 1327 acb->ds.chain[j].datalen, 1328 acb->ds.chain[i].databuf, 1329 acb->ds.chain[i].datalen); 1330 #endif 1331 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1332 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1333 } 1334 if (j < DMAMAXIO) 1335 acb->ds.chain[j].datalen = 0; 1336 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1337 } 1338 ++sc->sc_tinfo[target].dconns; 1339 /* 1340 * add nexus to waiting list 1341 * clear nexus 1342 * try to start another command for another target/lun 1343 */ 1344 acb->status = sc->sc_flags & SIOP_INTSOFF; 1345 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1346 sc->sc_nexus = NULL; /* no current device */ 1347 /* start script to wait for reselect */ 1348 if (sc->sc_nexus == NULL) 1349 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1350 /* XXXX start another command ? */ 1351 if (sc->ready_list.tqh_first) 1352 siopng_sched(sc); 1353 #if 0 1354 else 1355 rp->siop_dcntl |= SIOP_DCNTL_STD; 1356 #endif 1357 return (0); 1358 } 1359 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1360 int reselid = rp->siop_scratcha & 0x7f; 1361 int reselun = rp->siop_sfbr & 0x07; 1362 1363 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1364 #ifdef DEBUG 1365 if (siopng_debug & 0x100) 1366 printf ("%s: target ID %02x reselected dsps %lx\n", 1367 sc->sc_dev.dv_xname, reselid, 1368 rp->siop_dsps); 1369 if ((rp->siop_sfbr & 0x80) == 0) 1370 printf("%s: Reselect message in was not identify: %x\n", 1371 sc->sc_dev.dv_xname, rp->siop_sfbr); 1372 #endif 1373 if (sc->sc_nexus) { 1374 #ifdef DEBUG 1375 if (siopng_debug & 0x100) 1376 printf ("%s: reselect ID %02x w/active\n", 1377 sc->sc_dev.dv_xname, reselid); 1378 #endif 1379 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1380 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->scsipi_scsi.target].lubusy 1381 &= ~(1 << sc->sc_nexus->xs->sc_link->scsipi_scsi.lun); 1382 --sc->sc_active; 1383 } 1384 /* 1385 * locate acb of reselecting device 1386 * set sc->sc_nexus to acb 1387 */ 1388 for (acb = sc->nexus_list.tqh_first; acb; 1389 acb = acb->chain.tqe_next) { 1390 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1391 reselun != (acb->msgout[0] & 0x07)) 1392 continue; 1393 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1394 sc->sc_nexus = acb; 1395 sc->sc_flags |= acb->status; 1396 acb->status = 0; 1397 DCIAS(kvtop(&acb->stat[0])); 1398 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1399 rp->siop_sxfer = 1400 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].sxfer; 1401 #ifndef FIXME 1402 rp->siop_scntl3 = 1403 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].scntl3; 1404 #endif 1405 break; 1406 } 1407 if (acb == NULL) { 1408 printf("%s: target ID %02x reselect nexus_list %p\n", 1409 sc->sc_dev.dv_xname, reselid, 1410 sc->nexus_list.tqh_first); 1411 panic("unable to find reselecting device"); 1412 } 1413 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1414 rp->siop_temp = 0; 1415 rp->siop_dcntl |= SIOP_DCNTL_STD; 1416 return (0); 1417 } 1418 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1419 #ifdef DEBUG 1420 u_short ctest2 = rp->siop_ctest2; 1421 1422 /* reselect was interrupted (by Sig_P or select) */ 1423 if (siopng_debug & 0x100 || 1424 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1425 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1426 sc->sc_dev.dv_xname, rp->siop_scntl1, 1427 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1428 #endif 1429 /* XXX assumes it was not select */ 1430 if (sc->sc_nexus == NULL) { 1431 #ifdef DEBUG 1432 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1433 sc->sc_dev.dv_xname); 1434 #if 0 1435 siopng_dump(sc); 1436 #ifdef DDB 1437 Debugger(); 1438 #endif 1439 #endif 1440 #endif 1441 rp->siop_dcntl |= SIOP_DCNTL_STD; 1442 return(0); 1443 } 1444 target = sc->sc_nexus->xs->sc_link->scsipi_scsi.target; 1445 rp->siop_temp = 0; 1446 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1447 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1448 #ifndef FIXME 1449 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1450 #endif 1451 rp->siop_dsp = sc->sc_scriptspa; 1452 return (0); 1453 } 1454 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1455 if (acb == NULL) 1456 printf("%s: Bad message-in with no active command?\n", 1457 sc->sc_dev.dv_xname); 1458 /* Unrecognized message in byte */ 1459 dma_cachectl (&acb->msg[1],1); 1460 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1461 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1462 /* what should be done here? */ 1463 DCIAS(kvtop(&acb->msg[1])); 1464 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1465 return (0); 1466 } 1467 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1468 /* Status phase wasn't followed by message in phase? */ 1469 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1470 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1471 if (rp->siop_sbcl == 0xa7) { 1472 /* It is now, just continue the script? */ 1473 rp->siop_dcntl |= SIOP_DCNTL_STD; 1474 return (0); 1475 } 1476 } 1477 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1478 dma_cachectl (&acb->stat[0], 1); 1479 dma_cachectl (&acb->msg[0], 1); 1480 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1481 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1482 rp->siop_sbcl); 1483 siopngreset (sc); 1484 *status = -1; 1485 return 0; /* siopngreset has cleaned up */ 1486 } 1487 if (sist & SIOP_SIST_SGE) 1488 printf ("SIOP: SCSI Gross Error\n"); 1489 if (sist & SIOP_SIST_PAR) 1490 printf ("SIOP: Parity Error\n"); 1491 if (dstat & SIOP_DSTAT_IID) 1492 printf ("SIOP: Invalid instruction detected\n"); 1493 bad_phase: 1494 /* 1495 * temporary panic for unhandled conditions 1496 * displays various things about the 53C720/770 status and registers 1497 * then panics. 1498 * XXXX need to clean this up to print out the info, reset, and continue 1499 */ 1500 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1501 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1502 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1503 *((long *)&rp->siop_dcmd)); 1504 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1505 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1506 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1507 #ifdef DEBUG 1508 if (siopng_debug & 0x20) 1509 panic("siopngchkintr: **** temp ****"); 1510 #endif 1511 #ifdef DDB 1512 Debugger (); 1513 #endif 1514 siopngreset (sc); /* hard reset */ 1515 *status = -1; 1516 return 0; /* siopngreset cleaned up */ 1517 } 1518 1519 void 1520 siopng_select(sc) 1521 struct siop_softc *sc; 1522 { 1523 siop_regmap_p rp; 1524 struct siop_acb *acb = sc->sc_nexus; 1525 1526 #ifdef DEBUG 1527 if (siopng_debug & 1) 1528 printf ("%s: select ", sc->sc_dev.dv_xname); 1529 #endif 1530 1531 rp = sc->sc_siopp; 1532 if (acb->xs->flags & SCSI_POLL || siopng_no_dma) { 1533 sc->sc_flags |= SIOP_INTSOFF; 1534 sc->sc_flags &= ~SIOP_INTDEFER; 1535 if ((rp->siop_istat & 0x08) == 0) { 1536 rp->siop_sien = 0; 1537 rp->siop_dien = 0; 1538 } 1539 #if 0 1540 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1541 sc->sc_flags &= ~SIOP_INTSOFF; 1542 if ((rp->siop_istat & 0x08) == 0) { 1543 rp->siop_sien = sc->sc_sien; 1544 rp->siop_dien = sc->sc_dien; 1545 } 1546 #endif 1547 } 1548 #ifdef DEBUG 1549 if (siopng_debug & 1) 1550 printf ("siopng_select: target %x cmd %02x ds %p\n", 1551 acb->xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 1552 &sc->sc_nexus->ds); 1553 #endif 1554 1555 siopng_start(sc, acb->xs->sc_link->scsipi_scsi.target, 1556 acb->xs->sc_link->scsipi_scsi.lun, 1557 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1558 1559 return; 1560 } 1561 1562 /* 1563 * 53C720/770 interrupt handler 1564 */ 1565 1566 void 1567 siopngintr (sc) 1568 register struct siop_softc *sc; 1569 { 1570 siop_regmap_p rp; 1571 u_char istat, dstat; 1572 u_short sist; 1573 int status; 1574 int s = splbio(); 1575 1576 istat = sc->sc_istat; 1577 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1578 splx(s); 1579 return; 1580 } 1581 1582 /* Got a valid interrupt on this device */ 1583 rp = sc->sc_siopp; 1584 dstat = sc->sc_dstat; 1585 sist = sc->sc_sist; 1586 if (dstat & SIOP_DSTAT_SIR) 1587 sc->sc_intcode = rp->siop_dsps; 1588 sc->sc_istat = 0; 1589 #ifdef DEBUG 1590 if (siopng_debug & 1) 1591 printf ("%s: intr istat %x dstat %x sist %x\n", 1592 sc->sc_dev.dv_xname, istat, dstat, sist); 1593 if (!sc->sc_active) { 1594 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1595 sc->sc_dev.dv_xname, istat, dstat, sist, 1596 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1597 } 1598 #endif 1599 1600 #ifdef DEBUG 1601 if (siopng_debug & 5) { 1602 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1603 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1604 sc->sc_dev.dv_xname, istat, dstat, sist, 1605 rp->siop_dsps, rp->siop_sbcl, 1606 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1607 } 1608 #endif 1609 if (sc->sc_flags & SIOP_INTDEFER) { 1610 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1611 rp->siop_sien = sc->sc_sien; 1612 rp->siop_dien = sc->sc_dien; 1613 } 1614 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1615 #if 1 1616 if (status == 0xff) 1617 printf ("siopngintr: status == 0xff\n"); 1618 #endif 1619 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1620 #if 0 1621 if (rp->siop_sbcl & SIOP_BSY) { 1622 printf ("%s: SCSI bus busy at completion", 1623 sc->sc_dev.dv_xname); 1624 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1625 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 1626 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1627 rp->siop_dsp - sc->sc_scriptspa); 1628 } 1629 #endif 1630 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1631 sc->sc_nexus->stat[0] : -1); 1632 } 1633 } 1634 splx(s); 1635 } 1636 1637 /* 1638 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1639 * not be correct for other 53c710 boards. 1640 * 1641 */ 1642 void 1643 scsi_period_to_siopng (sc, target) 1644 struct siop_softc *sc; 1645 int target; 1646 { 1647 int period, offset, sxfer, scntl3 = 0; 1648 1649 period = sc->sc_nexus->msg[4]; 1650 offset = sc->sc_nexus->msg[5]; 1651 #ifdef FIXME 1652 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1653 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1654 if (sxfer >= 0 && sxfer <= 7) 1655 break; 1656 } 1657 if (scntl3 > 3) { 1658 printf("siopng sync: unable to compute sync params for period %dns\n", 1659 period * 4); 1660 /* 1661 * XXX need to pick a value we can do and renegotiate 1662 */ 1663 sxfer = scntl3 = 0; 1664 } else { 1665 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1666 offset : SIOP_MAX_OFFSET); 1667 #ifdef DEBUG_SYNC 1668 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1669 period * 4, sxfer, scntl3); 1670 printf(" actual period %dns\n", 1671 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1672 #endif /* DEBUG_SYNC */ 1673 } 1674 #else /* FIXME */ 1675 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1676 sxfer |= 0x20; /* XXX XFERP: 5 */ 1677 #ifndef FIXME 1678 if (period <= (50 / 4)) /* XXX */ 1679 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1680 else if (period <= (100 / 4)) 1681 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1682 else if (period <= (200 / 4)) 1683 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1684 else 1685 scntl3 = 0xff; /* XXX ??? */ 1686 #else 1687 scntl3 = 5; 1688 #endif 1689 #endif 1690 sc->sc_sync[target].sxfer = sxfer; 1691 sc->sc_sync[target].scntl3 = scntl3 | 1692 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1693 #ifdef DEBUG_SYNC 1694 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1695 #endif 1696 } 1697 1698 void 1699 siopng_dump_registers(sc) 1700 struct siop_softc *sc; 1701 { 1702 siop_regmap_p rp = sc->sc_siopp; 1703 1704 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1705 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1706 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1707 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1708 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1709 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1710 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1711 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1712 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1713 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1714 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1715 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1716 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1717 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1718 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1719 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1720 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1721 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1722 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1723 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1724 printf(" sidl %04x sodl %04x sbdl %04x\n", 1725 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1726 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1727 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1728 rp->siop_dsp - sc->sc_scriptspa : 0); 1729 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1730 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1731 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1732 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1733 } 1734 1735 #ifdef DEBUG 1736 1737 #if SIOP_TRACE_SIZE 1738 void 1739 siopng_dump_trace() 1740 { 1741 int i; 1742 1743 printf("siopng trace: next index %d\n", siopng_trix); 1744 i = siopng_trix; 1745 do { 1746 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1747 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1748 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1749 } while (i != siopng_trix); 1750 } 1751 #endif 1752 1753 void 1754 siopng_dump_acb(acb) 1755 struct siop_acb *acb; 1756 { 1757 u_char *b = (u_char *) &acb->cmd; 1758 int i; 1759 1760 printf("acb@%p ", acb); 1761 if (acb->xs == NULL) { 1762 printf("<unused>\n"); 1763 return; 1764 } 1765 printf("(%d:%d) flags %2x clen %2d cmd ", 1766 acb->xs->sc_link->scsipi_scsi.target, 1767 acb->xs->sc_link->scsipi_scsi.lun, acb->flags, acb->clen); 1768 for (i = acb->clen; i; --i) 1769 printf(" %02x", *b++); 1770 printf("\n"); 1771 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1772 acb->xs->datalen); 1773 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1774 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1775 } 1776 1777 void 1778 siopng_dump(sc) 1779 struct siop_softc *sc; 1780 { 1781 struct siop_acb *acb; 1782 siop_regmap_p rp = sc->sc_siopp; 1783 int s; 1784 int i; 1785 1786 s = splbio(); 1787 #if SIOP_TRACE_SIZE 1788 siopng_dump_trace(); 1789 #endif 1790 printf("%s@%p regs %p istat %x\n", 1791 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1792 if ((acb = sc->free_list.tqh_first) > 0) { 1793 printf("Free list:\n"); 1794 while (acb) { 1795 siopng_dump_acb(acb); 1796 acb = acb->chain.tqe_next; 1797 } 1798 } 1799 if ((acb = sc->ready_list.tqh_first) > 0) { 1800 printf("Ready list:\n"); 1801 while (acb) { 1802 siopng_dump_acb(acb); 1803 acb = acb->chain.tqe_next; 1804 } 1805 } 1806 if ((acb = sc->nexus_list.tqh_first) > 0) { 1807 printf("Nexus list:\n"); 1808 while (acb) { 1809 siopng_dump_acb(acb); 1810 acb = acb->chain.tqe_next; 1811 } 1812 } 1813 if (sc->sc_nexus) { 1814 printf("Nexus:\n"); 1815 siopng_dump_acb(sc->sc_nexus); 1816 } 1817 for (i = 0; i < 8; ++i) { 1818 if (sc->sc_tinfo[i].cmds > 2) { 1819 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1820 i, sc->sc_tinfo[i].cmds, 1821 sc->sc_tinfo[i].dconns, 1822 sc->sc_tinfo[i].senses, 1823 sc->sc_tinfo[i].lubusy); 1824 } 1825 } 1826 splx(s); 1827 } 1828 #endif 1829
Indexes created Thu Oct 02 14:10:14 GMT 2025