siop2.c revision 1.11.2.1
1 /* $NetBSD: siop2.c,v 1.11.2.1 1999/06/22 17:18:42 perry 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 /* 650 * is lower half unterminated? 651 */ 652 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) { 653 printf(" no SCSI termination, host adapter deactivated.\n"); 654 sc->sc_link.scsipi_scsi.max_target = -1; /* XXX */ 655 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF); 656 /* disable SCSI and DMA interrupts */ 657 sc->sc_sien = 0; 658 sc->sc_dien = 0; 659 rp->siop_sien = sc->sc_sien; 660 rp->siop_dien = sc->sc_dien; 661 662 return; 663 } 664 665 /* 666 * Check if upper half of SCSI bus is unterminated, and disallow 667 * disconnections if it appears to be unterminated. 668 */ 669 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 670 printf(" NO WIDE TERM"); 671 /* XXX need to restrict maximum target ID as well? */ 672 sc->sc_link.scsipi_scsi.max_target = 7; 673 for (i = 0; i < 16; ++i) { 674 siopng_allow_disc[i] = 0; 675 siopng_inhibit_wide[i] |= 0x80; 676 } 677 } 678 679 printf("siopng type %s id %d reset V%d\n", 680 siopng_chips[rp->siop_macntl>>4], 681 sc->sc_link.scsipi_scsi.adapter_target, 682 rp->siop_ctest3 >> 4); 683 684 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 685 TAILQ_INIT(&sc->ready_list); 686 TAILQ_INIT(&sc->nexus_list); 687 TAILQ_INIT(&sc->free_list); 688 sc->sc_nexus = NULL; 689 acb = sc->sc_acb; 690 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 691 for (i = 0; i < SIOP_NACB; i++) { 692 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 693 acb++; 694 } 695 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 696 } else { 697 if (sc->sc_nexus != NULL) { 698 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 699 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 700 } 701 while ((acb = sc->nexus_list.tqh_first) > 0) { 702 acb->xs->error = XS_DRIVER_STUFFUP; 703 siopng_scsidone(acb, acb->stat[0]); 704 } 705 } 706 707 sc->sc_flags |= SIOP_ALIVE; 708 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 709 /* enable SCSI and DMA interrupts */ 710 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 711 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 712 SIOP_SIEN_RST | SIOP_SIEN_PAR; 713 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 714 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 715 rp->siop_sien = sc->sc_sien; 716 rp->siop_dien = sc->sc_dien; 717 /*siopng_dump_registers(sc);*/ 718 } 719 720 /* 721 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 722 */ 723 724 void 725 siopng_start (sc, target, lun, cbuf, clen, buf, len) 726 struct siop_softc *sc; 727 int target; 728 int lun; 729 u_char *cbuf; 730 int clen; 731 u_char *buf; 732 int len; 733 { 734 siop_regmap_p rp = sc->sc_siopp; 735 int nchain; 736 int count, tcount; 737 char *addr, *dmaend; 738 struct siop_acb *acb = sc->sc_nexus; 739 #ifdef DEBUG 740 int i; 741 #endif 742 743 #ifdef DEBUG 744 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 745 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 746 rp, &siopng_scripts, &acb->ds, sc->sc_active); 747 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 748 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 749 rp->siop_sien, rp->siop_dien); 750 #ifdef DDB 751 /*Debugger();*/ 752 #endif 753 } 754 #endif 755 acb->msgout[0] = MSG_IDENTIFY | lun; 756 if (siopng_allow_disc[target] & 2 || 757 (siopng_allow_disc[target] && len == 0)) 758 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 759 acb->status = 0; 760 acb->stat[0] = -1; 761 acb->msg[0] = -1; 762 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 763 (sc->sc_sync[target].scntl3 << 24); 764 acb->ds.idlen = 1; 765 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 766 acb->ds.cmdlen = clen; 767 acb->ds.cmdbuf = (char *) kvtop(cbuf); 768 acb->ds.stslen = 1; 769 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 770 acb->ds.msglen = 1; 771 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 772 acb->msg[1] = -1; 773 acb->ds.msginlen = 1; 774 acb->ds.extmsglen = 1; 775 acb->ds.synmsglen = 3; 776 acb->ds.msginbuf = acb->ds.msgbuf + 1; 777 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 778 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 779 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 780 781 if (sc->sc_sync[target].state == NEG_WIDE) { 782 if (siopng_inhibit_wide[target]) { 783 sc->sc_sync[target].state = NEG_SYNC; 784 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 785 #ifdef DEBUG 786 if (siopngsync_debug) 787 printf ("Forcing target %d narrow\n", target); 788 #endif 789 } 790 else { 791 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 792 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 793 acb->msg[2] = -1; 794 acb->msgout[1] = MSG_EXT_MESSAGE; 795 acb->msgout[2] = 2; 796 acb->msgout[3] = MSG_WIDE_REQ; 797 acb->msgout[4] = 1; 798 acb->ds.idlen = 5; 799 acb->ds.synmsglen = 2; 800 sc->sc_sync[target].state = NEG_WAITW; 801 #ifdef DEBUG 802 if (siopngsync_debug) 803 printf("Sending wide request to target %d\n", target); 804 #endif 805 } 806 } 807 if (sc->sc_sync[target].state == NEG_SYNC) { 808 if (siopng_inhibit_sync[target]) { 809 sc->sc_sync[target].state = NEG_DONE; 810 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 811 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 812 sc->sc_sync[target].sxfer = 0; 813 #ifdef DEBUG 814 if (siopngsync_debug) 815 printf ("Forcing target %d asynchronous\n", target); 816 #endif 817 } 818 else { 819 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 820 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 821 acb->msg[2] = -1; 822 acb->msgout[1] = MSG_EXT_MESSAGE; 823 acb->msgout[2] = 3; 824 acb->msgout[3] = MSG_SYNC_REQ; 825 #ifdef MAXTOR_SYNC_KLUDGE 826 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 827 #else 828 acb->msgout[4] = sc->sc_minsync; 829 #endif 830 acb->msgout[5] = SIOP_MAX_OFFSET; 831 acb->ds.idlen = 6; 832 sc->sc_sync[target].state = NEG_WAITS; 833 #ifdef DEBUG 834 if (siopngsync_debug) 835 printf ("Sending sync request to target %d\n", target); 836 #endif 837 } 838 } 839 840 /* 841 * Build physical DMA addresses for scatter/gather I/O 842 */ 843 acb->iob_buf = buf; 844 acb->iob_len = len; 845 acb->iob_curbuf = acb->iob_curlen = 0; 846 nchain = 0; 847 count = len; 848 addr = buf; 849 dmaend = NULL; 850 while (count > 0) { 851 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 852 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 853 tcount = count; 854 855 #if DEBUG_ONLY_IF_DESPERATE 856 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 857 nchain, count, tcount, addr, 858 acb->ds.chain[nchain].databuf); 859 #endif 860 acb->ds.chain[nchain].datalen = tcount; 861 addr += tcount; 862 count -= tcount; 863 if (acb->ds.chain[nchain].databuf == dmaend) { 864 dmaend += acb->ds.chain[nchain].datalen; 865 acb->ds.chain[nchain].datalen = 0; 866 acb->ds.chain[--nchain].datalen += tcount; 867 #ifdef DEBUG 868 ++siopngdma_hits; 869 #endif 870 } 871 else { 872 dmaend = acb->ds.chain[nchain].databuf + 873 acb->ds.chain[nchain].datalen; 874 acb->ds.chain[nchain].datalen = tcount; 875 #ifdef DEBUG 876 if (nchain) /* Don't count miss on first one */ 877 ++siopngdma_misses; 878 #endif 879 } 880 ++nchain; 881 } 882 #ifdef DEBUG 883 if (nchain != 1 && len != 0 && siopng_debug & 3) { 884 printf ("DMA chaining set: %d\n", nchain); 885 for (i = 0; i < nchain; ++i) { 886 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 887 acb->ds.chain[i].datalen); 888 } 889 } 890 #endif 891 892 /* push data cache for all data the 53c720/770 needs to access */ 893 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 894 dma_cachectl (cbuf, clen); 895 if (buf != NULL && len != 0) 896 dma_cachectl (buf, len); 897 #ifdef DEBUG 898 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 899 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 900 rp, &siopng_scripts, &acb->ds, sc->sc_active); 901 #ifdef DDB 902 /*Debugger();*/ 903 #endif 904 } 905 #endif 906 if (sc->nexus_list.tqh_first == NULL) { 907 if (rp->siop_istat & SIOP_ISTAT_CON) 908 printf("%s: siopng_select while connected?\n", 909 sc->sc_dev.dv_xname); 910 rp->siop_temp = 0; 911 #ifndef FIXME 912 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 913 #endif 914 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 915 rp->siop_dsp = sc->sc_scriptspa; 916 SIOP_TRACE('s',1,0,0) 917 } else { 918 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 919 rp->siop_istat = SIOP_ISTAT_SIGP; 920 SIOP_TRACE('s',2,0,0); 921 } 922 else { 923 SIOP_TRACE('s',3,rp->siop_istat,0); 924 } 925 } 926 #ifdef DEBUG 927 ++siopngstarts; 928 #endif 929 } 930 931 /* 932 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 933 */ 934 935 int 936 siopng_checkintr(sc, istat, dstat, sist, status) 937 struct siop_softc *sc; 938 u_char istat; 939 u_char dstat; 940 u_short sist; 941 int *status; 942 { 943 siop_regmap_p rp = sc->sc_siopp; 944 struct siop_acb *acb = sc->sc_nexus; 945 int target = 0; 946 int dfifo, dbc, sstat0, sstat1, sstat2; 947 948 dfifo = rp->siop_dfifo; 949 dbc = rp->siop_dbc0; 950 sstat0 = rp->siop_sstat0; 951 sstat1 = rp->siop_sstat1; 952 sstat2 = rp->siop_sstat2; 953 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 954 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 955 ; 956 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 957 #ifdef DEBUG 958 ++siopngints; 959 #if 0 960 if (siopng_debug & 0x100) { 961 DCIAS(&acb->stat[0]); /* XXX */ 962 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 963 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 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 } 968 #endif 969 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 970 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 971 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 972 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 973 sc->sc_scriptspa + sizeof(siopng_scripts)); 974 printf(" istat %x dstat %x sist %x\n", 975 istat, dstat, sist); 976 #ifdef DDB 977 Debugger(); 978 #endif 979 } 980 #endif 981 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 982 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 983 /* Normal completion status, or check condition */ 984 #ifdef DEBUG 985 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 986 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 987 kvtop((caddr_t)&acb->ds)); 988 panic("*** siopng DSA invalid ***"); 989 } 990 #endif 991 target = acb->xs->sc_link->scsipi_scsi.target; 992 if (sc->sc_sync[target].state == NEG_WAITW) { 993 if (acb->msg[1] == 0xff) 994 printf ("%s: target %d ignored wide request\n", 995 sc->sc_dev.dv_xname, target); 996 else if (acb->msg[1] == MSG_REJECT) 997 printf ("%s: target %d rejected wide request\n", 998 sc->sc_dev.dv_xname, target); 999 else { 1000 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 1001 sc->sc_dev.dv_xname, target, acb->msg[1], 1002 acb->msg[2], acb->msg[3], acb->msg[4]); 1003 if (acb->msg[1] == MSG_EXT_MESSAGE && 1004 acb->msg[2] == 2 && 1005 acb->msg[3] == MSG_WIDE_REQ) 1006 sc->sc_sync[target].scntl3 = acb->msg[4] ? 1007 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 1008 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 1009 } 1010 sc->sc_sync[target].state = NEG_SYNC; 1011 } 1012 if (sc->sc_sync[target].state == NEG_WAITS) { 1013 if (acb->msg[1] == 0xff) 1014 printf ("%s: target %d ignored sync request\n", 1015 sc->sc_dev.dv_xname, target); 1016 else if (acb->msg[1] == MSG_REJECT) 1017 printf ("%s: target %d rejected sync request\n", 1018 sc->sc_dev.dv_xname, target); 1019 else 1020 /* XXX - need to set sync transfer parameters */ 1021 printf("%s: target %d (sync) %02x %02x %02x\n", 1022 sc->sc_dev.dv_xname, target, acb->msg[1], 1023 acb->msg[2], acb->msg[3]); 1024 sc->sc_sync[target].state = NEG_DONE; 1025 } 1026 dma_cachectl(&acb->stat[0], 1); 1027 *status = acb->stat[0]; 1028 #ifdef DEBUG 1029 if (rp->siop_sbcl & SIOP_BSY) { 1030 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1031 rp, &siopng_scripts, &acb->ds);*/ 1032 #ifdef DDB 1033 /*Debugger();*/ 1034 #endif 1035 } 1036 if (acb->msg[0] != 0x00) 1037 printf("%s: message was not COMMAND COMPLETE: %x\n", 1038 sc->sc_dev.dv_xname, acb->msg[0]); 1039 #endif 1040 if (sc->nexus_list.tqh_first) 1041 rp->siop_dcntl |= SIOP_DCNTL_STD; 1042 return 1; 1043 } 1044 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1045 target = acb->xs->sc_link->scsipi_scsi.target; 1046 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1047 acb->msg[3] == MSG_WIDE_REQ) { 1048 #ifdef DEBUG 1049 if (siopngsync_debug) 1050 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1051 acb->msg[0], acb->msg[1], acb->msg[2], 1052 acb->msg[3], acb->msg[4], acb->msg[5]); 1053 #endif 1054 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1055 if (acb->msg[2] == 2 && 1056 acb->msg[3] == MSG_WIDE_REQ && 1057 acb->msg[4] != 0) { 1058 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1059 printf ("%s: target %d now wide %d\n", 1060 sc->sc_dev.dv_xname, target, 1061 acb->msg[4]); 1062 } 1063 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1064 if (sc->sc_sync[target].state == NEG_WAITW) { 1065 sc->sc_sync[target].state = NEG_SYNC; 1066 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1067 return(0); 1068 } 1069 rp->siop_dcntl |= SIOP_DCNTL_STD; 1070 sc->sc_sync[target].state = NEG_SYNC; 1071 return (0); 1072 } 1073 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1074 acb->msg[3] == MSG_SYNC_REQ) { 1075 #ifdef DEBUG 1076 if (siopngsync_debug) 1077 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1078 acb->msg[0], acb->msg[1], acb->msg[2], 1079 acb->msg[3], acb->msg[4], acb->msg[5]); 1080 #endif 1081 sc->sc_sync[target].sxfer = 0; 1082 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1083 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1084 if (acb->msg[2] == 3 && 1085 acb->msg[3] == MSG_SYNC_REQ && 1086 acb->msg[5] != 0) { 1087 #ifdef MAXTOR_KLUDGE 1088 /* 1089 * Kludge for my Maxtor XT8580S 1090 * It accepts whatever we request, even 1091 * though it won't work. So we ask for 1092 * a short period than we can handle. If 1093 * the device says it can do it, use 208ns. 1094 * If the device says it can do less than 1095 * 100ns, then we limit it to 100ns. 1096 */ 1097 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1098 #ifdef DEBUG 1099 printf ("%d: target %d wanted %dns period\n", 1100 sc->sc_dev.dv_xname, target, 1101 acb->msg[4] * 4); 1102 #endif 1103 if (acb->msg[4] == 50 / 4) 1104 acb->msg[4] = 208 / 4; 1105 else 1106 acb->msg[4] = 100 / 4; 1107 } 1108 #endif /* MAXTOR_KLUDGE */ 1109 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1110 sc->sc_dev.dv_xname, target, 1111 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4, 1112 acb->msg[5]); 1113 scsi_period_to_siopng (sc, target); 1114 } 1115 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1116 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1117 if (sc->sc_sync[target].state == NEG_WAITS) { 1118 sc->sc_sync[target].state = NEG_DONE; 1119 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1120 return(0); 1121 } 1122 rp->siop_dcntl |= SIOP_DCNTL_STD; 1123 sc->sc_sync[target].state = NEG_DONE; 1124 return (0); 1125 } 1126 /* XXX - not SDTR message */ 1127 } 1128 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1129 #ifdef DEBUG 1130 ++siopngphmm; 1131 if (acb == NULL) 1132 printf("%s: Phase mismatch with no active command?\n", 1133 sc->sc_dev.dv_xname); 1134 #endif 1135 if (acb->iob_len) { 1136 int adjust; 1137 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1138 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1139 ++adjust; 1140 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1141 ++adjust; 1142 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1143 ++adjust; 1144 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1145 ++adjust; 1146 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1147 acb->iob_curlen += adjust; 1148 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1149 #ifdef DEBUG 1150 if (siopng_debug & 0x100) { 1151 int i; 1152 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1153 acb->iob_curbuf, acb->iob_curlen, dfifo, 1154 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1155 if (acb->ds.chain[1].datalen) { 1156 for (i = 0; acb->ds.chain[i].datalen; ++i) 1157 printf("chain[%d] addr %p len %lx\n", 1158 i, acb->ds.chain[i].databuf, 1159 acb->ds.chain[i].datalen); 1160 } 1161 } 1162 #endif 1163 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1164 } 1165 #ifdef DEBUG 1166 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1167 if (siopng_debug & 9) 1168 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1169 rp->siop_sbcl, 1170 rp->siop_dsp - sc->sc_scriptspa, 1171 *((long *)&rp->siop_dcmd)); 1172 #endif 1173 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1174 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1175 rp->siop_sbcl, rp->siop_dsp); 1176 #if defined(DEBUG) && defined(DDB) 1177 Debugger(); 1178 #endif 1179 } 1180 switch (rp->siop_sbcl & 7) { 1181 case 0: /* data out */ 1182 case 1: /* data in */ 1183 case 2: /* status */ 1184 case 3: /* command */ 1185 case 6: /* message in */ 1186 case 7: /* message out */ 1187 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1188 break; 1189 default: 1190 goto bad_phase; 1191 } 1192 return 0; 1193 } 1194 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1195 #ifdef DEBUG 1196 if (acb == NULL) 1197 printf("%s: Select timeout with no active command?\n", 1198 sc->sc_dev.dv_xname); 1199 if (rp->siop_sbcl & SIOP_BSY) { 1200 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1201 rp, &siopng_scripts, &acb->ds); 1202 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1203 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1204 if (!(rp->siop_sbcl & SIOP_BSY)) { 1205 printf ("Yikes, it's not busy now!\n"); 1206 #if 0 1207 *status = -1; 1208 if (sc->nexus_list.tqh_first) 1209 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1210 return 1; 1211 #endif 1212 } 1213 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1214 return (0); 1215 #ifdef DDB 1216 Debugger(); 1217 #endif 1218 } 1219 #endif 1220 *status = -1; 1221 acb->xs->error = XS_SELTIMEOUT; 1222 if (sc->nexus_list.tqh_first) 1223 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1224 return 1; 1225 } 1226 if (acb) 1227 target = acb->xs->sc_link->scsipi_scsi.target; 1228 else 1229 target = 7; 1230 if (sist & SIOP_SIST_UDC) { 1231 #ifdef DEBUG 1232 if (acb == NULL) 1233 printf("%s: Unexpected disconnect with no active command?\n", 1234 sc->sc_dev.dv_xname); 1235 printf ("%s: target %d disconnected unexpectedly\n", 1236 sc->sc_dev.dv_xname, target); 1237 siopng_dump_registers(sc); 1238 siopng_dump(sc); 1239 #endif 1240 #if 0 1241 siopngabort (sc, rp, "siopngchkintr"); 1242 #endif 1243 *status = STS_BUSY; 1244 if (sc->nexus_list.tqh_first) 1245 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1246 return (acb != NULL); 1247 } 1248 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1249 rp->siop_dsps == 0xff02)) { 1250 #ifdef DEBUG 1251 if (siopng_debug & 0x100) 1252 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", 1253 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1254 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1255 acb->iob_curbuf, acb->iob_curlen, 1256 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1257 #endif 1258 if (acb == NULL) { 1259 printf("%s: Disconnect with no active command?\n", 1260 sc->sc_dev.dv_xname); 1261 return (0); 1262 } 1263 /* 1264 * XXXX need to update iob_curbuf/iob_curlen to reflect 1265 * current data transferred. If device disconnected in 1266 * the middle of a DMA block, they should already be set 1267 * by the phase change interrupt. If the disconnect 1268 * occurs on a DMA block boundary, we have to figure out 1269 * which DMA block it was. 1270 */ 1271 if (acb->iob_len && rp->siop_temp) { 1272 int n = rp->siop_temp - sc->sc_scriptspa; 1273 1274 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1275 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1276 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1277 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1278 if (n < Ent_datain) 1279 n = (n - Ent_dataout) / 16; 1280 else 1281 n = (n - Ent_datain) / 16; 1282 if (n <= 0 && n > DMAMAXIO) 1283 printf("TEMP invalid %d\n", n); 1284 else { 1285 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1286 acb->iob_curlen = acb->ds.chain[n].datalen; 1287 } 1288 #ifdef DEBUG 1289 if (siopng_debug & 0x100) { 1290 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1291 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1292 acb->iob_curlen); 1293 } 1294 #endif 1295 } 1296 /* 1297 * If data transfer was interrupted by disconnect, iob_curbuf 1298 * and iob_curlen should reflect the point of interruption. 1299 * Adjust the DMA chain so that the data transfer begins 1300 * at the appropriate place upon reselection. 1301 * XXX This should only be done on save data pointer message? 1302 */ 1303 if (acb->iob_curlen) { 1304 int i, j; 1305 1306 #ifdef DEBUG 1307 if (siopng_debug & 0x100) 1308 printf ("%s: adjusting DMA chain\n", 1309 sc->sc_dev.dv_xname); 1310 if (rp->siop_dsps == 0xff02) 1311 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1312 sc->sc_dev.dv_xname, 1 << target); 1313 #endif 1314 for (i = 0; i < DMAMAXIO; ++i) { 1315 if (acb->ds.chain[i].datalen == 0) 1316 break; 1317 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1318 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1319 acb->ds.chain[i].datalen)) 1320 break; 1321 } 1322 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1323 printf("couldn't find saved data pointer: "); 1324 printf("curbuf %lx curlen %lx i %d\n", 1325 acb->iob_curbuf, acb->iob_curlen, i); 1326 #ifdef DDB 1327 Debugger(); 1328 #endif 1329 } 1330 #ifdef DEBUG 1331 if (siopng_debug & 0x100) 1332 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1333 acb->ds.chain[0].databuf, 1334 acb->ds.chain[0].datalen, 1335 acb->iob_curbuf, 1336 acb->iob_curlen); 1337 #endif 1338 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1339 acb->ds.chain[0].datalen = acb->iob_curlen; 1340 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1341 #ifdef DEBUG 1342 if (siopng_debug & 0x100) 1343 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1344 acb->ds.chain[j].databuf, 1345 acb->ds.chain[j].datalen, 1346 acb->ds.chain[i].databuf, 1347 acb->ds.chain[i].datalen); 1348 #endif 1349 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1350 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1351 } 1352 if (j < DMAMAXIO) 1353 acb->ds.chain[j].datalen = 0; 1354 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1355 } 1356 ++sc->sc_tinfo[target].dconns; 1357 /* 1358 * add nexus to waiting list 1359 * clear nexus 1360 * try to start another command for another target/lun 1361 */ 1362 acb->status = sc->sc_flags & SIOP_INTSOFF; 1363 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1364 sc->sc_nexus = NULL; /* no current device */ 1365 /* start script to wait for reselect */ 1366 if (sc->sc_nexus == NULL) 1367 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1368 /* XXXX start another command ? */ 1369 if (sc->ready_list.tqh_first) 1370 siopng_sched(sc); 1371 #if 0 1372 else 1373 rp->siop_dcntl |= SIOP_DCNTL_STD; 1374 #endif 1375 return (0); 1376 } 1377 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1378 int reselid = rp->siop_scratcha & 0x7f; 1379 int reselun = rp->siop_sfbr & 0x07; 1380 1381 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1382 #ifdef DEBUG 1383 if (siopng_debug & 0x100) 1384 printf ("%s: target ID %02x reselected dsps %lx\n", 1385 sc->sc_dev.dv_xname, reselid, 1386 rp->siop_dsps); 1387 if ((rp->siop_sfbr & 0x80) == 0) 1388 printf("%s: Reselect message in was not identify: %x\n", 1389 sc->sc_dev.dv_xname, rp->siop_sfbr); 1390 #endif 1391 if (sc->sc_nexus) { 1392 #ifdef DEBUG 1393 if (siopng_debug & 0x100) 1394 printf ("%s: reselect ID %02x w/active\n", 1395 sc->sc_dev.dv_xname, reselid); 1396 #endif 1397 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1398 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->scsipi_scsi.target].lubusy 1399 &= ~(1 << sc->sc_nexus->xs->sc_link->scsipi_scsi.lun); 1400 --sc->sc_active; 1401 } 1402 /* 1403 * locate acb of reselecting device 1404 * set sc->sc_nexus to acb 1405 */ 1406 for (acb = sc->nexus_list.tqh_first; acb; 1407 acb = acb->chain.tqe_next) { 1408 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1409 reselun != (acb->msgout[0] & 0x07)) 1410 continue; 1411 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1412 sc->sc_nexus = acb; 1413 sc->sc_flags |= acb->status; 1414 acb->status = 0; 1415 DCIAS(kvtop(&acb->stat[0])); 1416 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1417 rp->siop_sxfer = 1418 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].sxfer; 1419 #ifndef FIXME 1420 rp->siop_scntl3 = 1421 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].scntl3; 1422 #endif 1423 break; 1424 } 1425 if (acb == NULL) { 1426 printf("%s: target ID %02x reselect nexus_list %p\n", 1427 sc->sc_dev.dv_xname, reselid, 1428 sc->nexus_list.tqh_first); 1429 panic("unable to find reselecting device"); 1430 } 1431 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1432 rp->siop_temp = 0; 1433 rp->siop_dcntl |= SIOP_DCNTL_STD; 1434 return (0); 1435 } 1436 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1437 #ifdef DEBUG 1438 u_short ctest2 = rp->siop_ctest2; 1439 1440 /* reselect was interrupted (by Sig_P or select) */ 1441 if (siopng_debug & 0x100 || 1442 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1443 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1444 sc->sc_dev.dv_xname, rp->siop_scntl1, 1445 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1446 #endif 1447 /* XXX assumes it was not select */ 1448 if (sc->sc_nexus == NULL) { 1449 #ifdef DEBUG 1450 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1451 sc->sc_dev.dv_xname); 1452 #if 0 1453 siopng_dump(sc); 1454 #ifdef DDB 1455 Debugger(); 1456 #endif 1457 #endif 1458 #endif 1459 rp->siop_dcntl |= SIOP_DCNTL_STD; 1460 return(0); 1461 } 1462 target = sc->sc_nexus->xs->sc_link->scsipi_scsi.target; 1463 rp->siop_temp = 0; 1464 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1465 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1466 #ifndef FIXME 1467 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1468 #endif 1469 rp->siop_dsp = sc->sc_scriptspa; 1470 return (0); 1471 } 1472 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1473 if (acb == NULL) 1474 printf("%s: Bad message-in with no active command?\n", 1475 sc->sc_dev.dv_xname); 1476 /* Unrecognized message in byte */ 1477 dma_cachectl (&acb->msg[1],1); 1478 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1479 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1480 /* what should be done here? */ 1481 DCIAS(kvtop(&acb->msg[1])); 1482 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1483 return (0); 1484 } 1485 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1486 /* Status phase wasn't followed by message in phase? */ 1487 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1488 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1489 if (rp->siop_sbcl == 0xa7) { 1490 /* It is now, just continue the script? */ 1491 rp->siop_dcntl |= SIOP_DCNTL_STD; 1492 return (0); 1493 } 1494 } 1495 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1496 dma_cachectl (&acb->stat[0], 1); 1497 dma_cachectl (&acb->msg[0], 1); 1498 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1499 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1500 rp->siop_sbcl); 1501 siopngreset (sc); 1502 *status = -1; 1503 return 0; /* siopngreset has cleaned up */ 1504 } 1505 if (sist & SIOP_SIST_SGE) 1506 printf ("SIOP: SCSI Gross Error\n"); 1507 if (sist & SIOP_SIST_PAR) 1508 printf ("SIOP: Parity Error\n"); 1509 if (dstat & SIOP_DSTAT_IID) 1510 printf ("SIOP: Invalid instruction detected\n"); 1511 bad_phase: 1512 /* 1513 * temporary panic for unhandled conditions 1514 * displays various things about the 53C720/770 status and registers 1515 * then panics. 1516 * XXXX need to clean this up to print out the info, reset, and continue 1517 */ 1518 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1519 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1520 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1521 *((long *)&rp->siop_dcmd)); 1522 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1523 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1524 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1525 #ifdef DEBUG 1526 if (siopng_debug & 0x20) 1527 panic("siopngchkintr: **** temp ****"); 1528 #endif 1529 #ifdef DDB 1530 Debugger (); 1531 #endif 1532 siopngreset (sc); /* hard reset */ 1533 *status = -1; 1534 return 0; /* siopngreset cleaned up */ 1535 } 1536 1537 void 1538 siopng_select(sc) 1539 struct siop_softc *sc; 1540 { 1541 siop_regmap_p rp; 1542 struct siop_acb *acb = sc->sc_nexus; 1543 1544 #ifdef DEBUG 1545 if (siopng_debug & 1) 1546 printf ("%s: select ", sc->sc_dev.dv_xname); 1547 #endif 1548 1549 rp = sc->sc_siopp; 1550 if (acb->xs->flags & SCSI_POLL || siopng_no_dma) { 1551 sc->sc_flags |= SIOP_INTSOFF; 1552 sc->sc_flags &= ~SIOP_INTDEFER; 1553 if ((rp->siop_istat & 0x08) == 0) { 1554 rp->siop_sien = 0; 1555 rp->siop_dien = 0; 1556 } 1557 #if 0 1558 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1559 sc->sc_flags &= ~SIOP_INTSOFF; 1560 if ((rp->siop_istat & 0x08) == 0) { 1561 rp->siop_sien = sc->sc_sien; 1562 rp->siop_dien = sc->sc_dien; 1563 } 1564 #endif 1565 } 1566 #ifdef DEBUG 1567 if (siopng_debug & 1) 1568 printf ("siopng_select: target %x cmd %02x ds %p\n", 1569 acb->xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 1570 &sc->sc_nexus->ds); 1571 #endif 1572 1573 siopng_start(sc, acb->xs->sc_link->scsipi_scsi.target, 1574 acb->xs->sc_link->scsipi_scsi.lun, 1575 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1576 1577 return; 1578 } 1579 1580 /* 1581 * 53C720/770 interrupt handler 1582 */ 1583 1584 void 1585 siopngintr (sc) 1586 register struct siop_softc *sc; 1587 { 1588 siop_regmap_p rp; 1589 u_char istat, dstat; 1590 u_short sist; 1591 int status; 1592 int s = splbio(); 1593 1594 istat = sc->sc_istat; 1595 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1596 splx(s); 1597 return; 1598 } 1599 1600 /* Got a valid interrupt on this device */ 1601 rp = sc->sc_siopp; 1602 dstat = sc->sc_dstat; 1603 sist = sc->sc_sist; 1604 if (dstat & SIOP_DSTAT_SIR) 1605 sc->sc_intcode = rp->siop_dsps; 1606 sc->sc_istat = 0; 1607 #ifdef DEBUG 1608 if (siopng_debug & 1) 1609 printf ("%s: intr istat %x dstat %x sist %x\n", 1610 sc->sc_dev.dv_xname, istat, dstat, sist); 1611 if (!sc->sc_active) { 1612 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1613 sc->sc_dev.dv_xname, istat, dstat, sist, 1614 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1615 } 1616 #endif 1617 1618 #ifdef DEBUG 1619 if (siopng_debug & 5) { 1620 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1621 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1622 sc->sc_dev.dv_xname, istat, dstat, sist, 1623 rp->siop_dsps, rp->siop_sbcl, 1624 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1625 } 1626 #endif 1627 if (sc->sc_flags & SIOP_INTDEFER) { 1628 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1629 rp->siop_sien = sc->sc_sien; 1630 rp->siop_dien = sc->sc_dien; 1631 } 1632 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1633 #if 1 1634 if (status == 0xff) 1635 printf ("siopngintr: status == 0xff\n"); 1636 #endif 1637 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1638 #if 0 1639 if (rp->siop_sbcl & SIOP_BSY) { 1640 printf ("%s: SCSI bus busy at completion", 1641 sc->sc_dev.dv_xname); 1642 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1643 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 1644 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1645 rp->siop_dsp - sc->sc_scriptspa); 1646 } 1647 #endif 1648 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1649 sc->sc_nexus->stat[0] : -1); 1650 } 1651 } 1652 splx(s); 1653 } 1654 1655 /* 1656 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1657 * not be correct for other 53c710 boards. 1658 * 1659 */ 1660 void 1661 scsi_period_to_siopng (sc, target) 1662 struct siop_softc *sc; 1663 int target; 1664 { 1665 int period, offset, sxfer, scntl3 = 0; 1666 1667 period = sc->sc_nexus->msg[4]; 1668 offset = sc->sc_nexus->msg[5]; 1669 #ifdef FIXME 1670 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1671 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1672 if (sxfer >= 0 && sxfer <= 7) 1673 break; 1674 } 1675 if (scntl3 > 3) { 1676 printf("siopng sync: unable to compute sync params for period %dns\n", 1677 period * 4); 1678 /* 1679 * XXX need to pick a value we can do and renegotiate 1680 */ 1681 sxfer = scntl3 = 0; 1682 } else { 1683 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1684 offset : SIOP_MAX_OFFSET); 1685 #ifdef DEBUG_SYNC 1686 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1687 period * 4, sxfer, scntl3); 1688 printf(" actual period %dns\n", 1689 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1690 #endif /* DEBUG_SYNC */ 1691 } 1692 #else /* FIXME */ 1693 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1694 sxfer |= 0x20; /* XXX XFERP: 5 */ 1695 #ifndef FIXME 1696 if (period <= (50 / 4)) /* XXX */ 1697 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1698 else if (period <= (100 / 4)) 1699 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1700 else if (period <= (200 / 4)) 1701 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1702 else 1703 scntl3 = 0xff; /* XXX ??? */ 1704 #else 1705 scntl3 = 5; 1706 #endif 1707 #endif 1708 sc->sc_sync[target].sxfer = sxfer; 1709 sc->sc_sync[target].scntl3 = scntl3 | 1710 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1711 #ifdef DEBUG_SYNC 1712 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1713 #endif 1714 } 1715 1716 void 1717 siopng_dump_registers(sc) 1718 struct siop_softc *sc; 1719 { 1720 siop_regmap_p rp = sc->sc_siopp; 1721 1722 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1723 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1724 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1725 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1726 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1727 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1728 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1729 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1730 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1731 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1732 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1733 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1734 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1735 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1736 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1737 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1738 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1739 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1740 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1741 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1742 printf(" sidl %04x sodl %04x sbdl %04x\n", 1743 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1744 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1745 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1746 rp->siop_dsp - sc->sc_scriptspa : 0); 1747 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1748 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1749 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1750 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1751 } 1752 1753 #ifdef DEBUG 1754 1755 #if SIOP_TRACE_SIZE 1756 void 1757 siopng_dump_trace() 1758 { 1759 int i; 1760 1761 printf("siopng trace: next index %d\n", siopng_trix); 1762 i = siopng_trix; 1763 do { 1764 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1765 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1766 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1767 } while (i != siopng_trix); 1768 } 1769 #endif 1770 1771 void 1772 siopng_dump_acb(acb) 1773 struct siop_acb *acb; 1774 { 1775 u_char *b = (u_char *) &acb->cmd; 1776 int i; 1777 1778 printf("acb@%p ", acb); 1779 if (acb->xs == NULL) { 1780 printf("<unused>\n"); 1781 return; 1782 } 1783 printf("(%d:%d) flags %2x clen %2d cmd ", 1784 acb->xs->sc_link->scsipi_scsi.target, 1785 acb->xs->sc_link->scsipi_scsi.lun, acb->flags, acb->clen); 1786 for (i = acb->clen; i; --i) 1787 printf(" %02x", *b++); 1788 printf("\n"); 1789 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1790 acb->xs->datalen); 1791 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1792 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1793 } 1794 1795 void 1796 siopng_dump(sc) 1797 struct siop_softc *sc; 1798 { 1799 struct siop_acb *acb; 1800 siop_regmap_p rp = sc->sc_siopp; 1801 int s; 1802 int i; 1803 1804 s = splbio(); 1805 #if SIOP_TRACE_SIZE 1806 siopng_dump_trace(); 1807 #endif 1808 printf("%s@%p regs %p istat %x\n", 1809 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1810 if ((acb = sc->free_list.tqh_first) > 0) { 1811 printf("Free list:\n"); 1812 while (acb) { 1813 siopng_dump_acb(acb); 1814 acb = acb->chain.tqe_next; 1815 } 1816 } 1817 if ((acb = sc->ready_list.tqh_first) > 0) { 1818 printf("Ready list:\n"); 1819 while (acb) { 1820 siopng_dump_acb(acb); 1821 acb = acb->chain.tqe_next; 1822 } 1823 } 1824 if ((acb = sc->nexus_list.tqh_first) > 0) { 1825 printf("Nexus list:\n"); 1826 while (acb) { 1827 siopng_dump_acb(acb); 1828 acb = acb->chain.tqe_next; 1829 } 1830 } 1831 if (sc->sc_nexus) { 1832 printf("Nexus:\n"); 1833 siopng_dump_acb(sc->sc_nexus); 1834 } 1835 for (i = 0; i < 8; ++i) { 1836 if (sc->sc_tinfo[i].cmds > 2) { 1837 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1838 i, sc->sc_tinfo[i].cmds, 1839 sc->sc_tinfo[i].dconns, 1840 sc->sc_tinfo[i].senses, 1841 sc->sc_tinfo[i].lubusy); 1842 } 1843 } 1844 splx(s); 1845 } 1846 #endif 1847
Indexes created Thu Oct 02 14:10:14 GMT 2025