siop2.c revision 1.14.2.2
1 /* $NetBSD: siop2.c,v 1.14.2.2 2001/03/29 09:02:56 bouyer 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 #ifdef __m68k__ 60 #include <m68k/include/cacheops.h> 61 #endif 62 #include <amiga/amiga/custom.h> 63 #include <amiga/amiga/isr.h> 64 65 #define ARCH_720 66 67 #include <amiga/dev/siopreg.h> 68 #include <amiga/dev/siopvar.h> 69 70 /* 71 * SCSI delays 72 * In u-seconds, primarily for state changes on the SPC. 73 */ 74 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 75 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 76 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 77 78 void siopng_select __P((struct siop_softc *)); 79 void siopngabort __P((struct siop_softc *, siop_regmap_p, char *)); 80 void siopngerror __P((struct siop_softc *, siop_regmap_p, u_char)); 81 void siopngstart __P((struct siop_softc *)); 82 int siopng_checkintr __P((struct siop_softc *, u_char, u_char, u_short, int *)); 83 void siopngreset __P((struct siop_softc *)); 84 void siopngsetdelay __P((int)); 85 void siopng_scsidone __P((struct siop_acb *, int)); 86 void siopng_sched __P((struct siop_softc *)); 87 int siopng_poll __P((struct siop_softc *, struct siop_acb *)); 88 void siopngintr __P((struct siop_softc *)); 89 void scsi_period_to_siopng __P((struct siop_softc *, int)); 90 void siopng_start __P((struct siop_softc *, int, int, u_char *, int, u_char *, int)); 91 void siopng_dump_acb __P((struct siop_acb *)); 92 93 /* 53C720/770 script */ 94 const 95 #include <amiga/dev/siop2_script.out> 96 97 /* default to not inhibit sync negotiation on any drive */ 98 u_char siopng_inhibit_sync[16] = { 99 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 100 }; /* initialize, so patchable */ 101 102 u_char siopng_inhibit_wide[16] = { 103 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 104 }; /* initialize, so patchable */ 105 106 u_char siopng_allow_disc[16] = { 107 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 108 }; 109 110 int siopng_no_dma = 0; 111 112 int siopng_reset_delay = 250; /* delay after reset, in milleseconds */ 113 114 int siopng_cmd_wait = SCSI_CMD_WAIT; 115 int siopng_data_wait = SCSI_DATA_WAIT; 116 int siopng_init_wait = SCSI_INIT_WAIT; 117 118 #define DEBUG_SYNC 119 120 #ifdef DEBUG 121 /* 122 * 0x01 - full debug 123 * 0x02 - DMA chaining 124 * 0x04 - siopngintr 125 * 0x08 - phase mismatch 126 * 0x10 - <not used> 127 * 0x20 - panic on unhandled exceptions 128 * 0x100 - disconnect/reselect 129 */ 130 int siopng_debug = 0; 131 int siopngsync_debug = 0; 132 int siopngdma_hits = 0; 133 int siopngdma_misses = 0; 134 int siopngchain_ints = 0; 135 int siopngstarts = 0; 136 int siopngints = 0; 137 int siopngphmm = 0; 138 #define SIOP_TRACE_SIZE 128 139 #define SIOP_TRACE(a,b,c,d) \ 140 siopng_trbuf[siopng_trix] = (a); \ 141 siopng_trbuf[siopng_trix+1] = (b); \ 142 siopng_trbuf[siopng_trix+2] = (c); \ 143 siopng_trbuf[siopng_trix+3] = (d); \ 144 siopng_trix = (siopng_trix + 4) & (SIOP_TRACE_SIZE - 1); 145 u_char siopng_trbuf[SIOP_TRACE_SIZE]; 146 int siopng_trix; 147 void siopng_dump __P((struct siop_softc *)); 148 void siopng_dump_trace __P((void)); 149 #else 150 #define SIOP_TRACE(a,b,c,d) 151 #endif 152 153 154 static char *siopng_chips[] = { 155 "720", "720SE", "770", "0x3", 156 "810A", "0x5", "0x6", "0x7", 157 "0x8", "0x9", "0xA", "0xB", 158 "0xC", "0xD", "0xE", "0xF", 159 }; 160 161 /* 162 * default minphys routine for siopng based controllers 163 */ 164 void 165 siopng_minphys(bp) 166 struct buf *bp; 167 { 168 169 /* 170 * No max transfer at this level. 171 */ 172 minphys(bp); 173 } 174 175 /* 176 * used by specific siopng controller 177 * 178 */ 179 void 180 siopng_scsipi_request(chan, req, arg) 181 struct scsipi_channel *chan; 182 scsipi_adapter_req_t req; 183 void *arg; 184 { 185 struct scsipi_xfer *xs; 186 struct scsipi_periph *periph; 187 struct siop_acb *acb; 188 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 189 int flags, s; 190 191 switch (req) { 192 case ADAPTER_REQ_RUN_XFER: 193 xs = arg; 194 periph = xs->xs_periph; 195 flags = xs->xs_control; 196 197 /* XXXX ?? */ 198 if (flags & XS_CTL_DATA_UIO) 199 panic("siopng: scsi data uio requested"); 200 201 /* XXXX ?? */ 202 if (sc->sc_nexus && flags & XS_CTL_POLL) 203 /* panic("siopng_scsicmd: busy");*/ 204 printf("siopng_scsicmd: busy\n"); 205 206 s = splbio(); 207 acb = sc->free_list.tqh_first; 208 if (acb) { 209 TAILQ_REMOVE(&sc->free_list, acb, chain); 210 } 211 splx(s); 212 213 #ifdef DIAGNOSTIC 214 /* 215 * This should never happen as we track the resources 216 * in the mid-layer. 217 */ 218 if (acb == NULL) { 219 scsipi_printaddr(periph); 220 printf("unable to allocate acb\n"); 221 panic("sea_scsipi_request"); 222 } 223 #endif 224 acb->flags = ACB_ACTIVE; 225 acb->xs = xs; 226 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 227 acb->clen = xs->cmdlen; 228 acb->daddr = xs->data; 229 acb->dleft = xs->datalen; 230 231 s = splbio(); 232 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 233 234 if (sc->sc_nexus == NULL) 235 siopng_sched(sc); 236 237 splx(s); 238 239 if (flags & XS_CTL_POLL || siopng_no_dma) 240 siopng_poll(sc, acb); 241 return; 242 243 case ADAPTER_REQ_GROW_RESOURCES: 244 return; 245 246 case ADAPTER_REQ_SET_XFER_MODE: 247 return; 248 } 249 } 250 251 int 252 siopng_poll(sc, acb) 253 struct siop_softc *sc; 254 struct siop_acb *acb; 255 { 256 siop_regmap_p rp = sc->sc_siopp; 257 struct scsipi_xfer *xs = acb->xs; 258 int i; 259 int status; 260 u_char istat; 261 u_char dstat; 262 u_short sist; 263 int s; 264 int to; 265 266 s = splbio(); 267 to = xs->timeout / 1000; 268 if (sc->nexus_list.tqh_first) 269 printf("%s: siopng_poll called with disconnected device\n", 270 sc->sc_dev.dv_xname); 271 for (;;) { 272 /* use cmd_wait values? */ 273 i = 50000; 274 /* XXX spl0(); */ 275 while (((istat = rp->siop_istat) & 276 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 277 if (--i <= 0) { 278 #ifdef DEBUG 279 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 280 xs->xs_periph->periph_target, acb->cmd.opcode, 281 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp, 282 rp->siop_dsp - sc->sc_scriptspa, 283 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 284 #endif 285 i = 50000; 286 --to; 287 if (to <= 0) { 288 siopngreset(sc); 289 return(COMPLETE); 290 } 291 } 292 delay(20); 293 } 294 sist = rp->siop_sist; 295 dstat = rp->siop_dstat; 296 if (siopng_checkintr(sc, istat, dstat, sist, &status)) { 297 if (acb != sc->sc_nexus) 298 printf("%s: siopng_poll disconnected device completed\n", 299 sc->sc_dev.dv_xname); 300 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 301 sc->sc_flags &= ~SIOP_INTSOFF; 302 rp->siop_sien = sc->sc_sien; 303 rp->siop_dien = sc->sc_dien; 304 } 305 siopng_scsidone(sc->sc_nexus, status); 306 } 307 if (xs->xs_status & XS_STS_DONE) 308 break; 309 } 310 splx(s); 311 return (COMPLETE); 312 } 313 314 /* 315 * start next command that's ready 316 */ 317 void 318 siopng_sched(sc) 319 struct siop_softc *sc; 320 { 321 struct scsipi_periph *periph; 322 struct siop_acb *acb; 323 int i; 324 325 #ifdef DEBUG 326 if (sc->sc_nexus) { 327 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n", 328 sc->sc_dev.dv_xname, sc->sc_nexus, 329 sc->sc_nexus->xs->xs_periph->periph_target, 330 sc->ready_list.tqh_first, 331 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 332 return; 333 } 334 #endif 335 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 336 periph = acb->xs->xs_periph; 337 i = periph->periph_target; 338 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 339 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 340 341 TAILQ_REMOVE(&sc->ready_list, acb, chain); 342 sc->sc_nexus = acb; 343 periph = acb->xs->xs_periph; 344 ti = &sc->sc_tinfo[periph->periph_target]; 345 ti->lubusy |= (1 << periph->periph_lun); 346 break; 347 } 348 } 349 350 if (acb == NULL) { 351 #ifdef DEBUGXXX 352 printf("%s: siopng_sched didn't find ready command\n", 353 sc->sc_dev.dv_xname); 354 #endif 355 return; 356 } 357 358 if (acb->xs->xs_control & XS_CTL_RESET) 359 siopngreset(sc); 360 361 #if 0 362 acb->cmd.bytes[0] |= periph->periph_lun << 5; /* XXXX */ 363 #endif 364 ++sc->sc_active; 365 siopng_select(sc); 366 } 367 368 void 369 siopng_scsidone(acb, stat) 370 struct siop_acb *acb; 371 int stat; 372 { 373 struct scsipi_xfer *xs; 374 struct scsipi_periph *periph; 375 struct siop_softc *sc; 376 int dosched = 0; 377 378 if (acb == NULL || (xs = acb->xs) == NULL) { 379 #ifdef DIAGNOSTIC 380 printf("siopng_scsidone: NULL acb or scsipi_xfer\n"); 381 #if defined(DEBUG) && defined(DDB) 382 Debugger(); 383 #endif 384 #endif 385 return; 386 } 387 periph = xs->xs_periph; 388 sc = (void *)periph->periph_chan->chan_adapter->adapt_dev; 389 390 xs->status = stat; 391 xs->resid = 0; /* XXXX */ 392 393 if (xs->error == XS_NOERROR) { 394 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 395 xs->error == XS_BUSY; 396 } 397 398 /* 399 * Remove the ACB from whatever queue it's on. We have to do a bit of 400 * a hack to figure out which queue it's on. Note that it is *not* 401 * necessary to cdr down the ready queue, but we must cdr down the 402 * nexus queue and see if it's there, so we can mark the unit as no 403 * longer busy. This code is sickening, but it works. 404 */ 405 if (acb == sc->sc_nexus) { 406 sc->sc_nexus = NULL; 407 sc->sc_tinfo[periph->periph_target].lubusy &= 408 ~(1<<periph->periph_lun); 409 if (sc->ready_list.tqh_first) 410 dosched = 1; /* start next command */ 411 --sc->sc_active; 412 SIOP_TRACE('d','a',stat,0) 413 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 414 TAILQ_REMOVE(&sc->ready_list, acb, chain); 415 SIOP_TRACE('d','r',stat,0) 416 } else { 417 register struct siop_acb *acb2; 418 for (acb2 = sc->nexus_list.tqh_first; acb2; 419 acb2 = acb2->chain.tqe_next) 420 if (acb2 == acb) { 421 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 422 sc->sc_tinfo[periph->periph_target].lubusy 423 &= ~(1<<periph->periph_lun); 424 --sc->sc_active; 425 break; 426 } 427 if (acb2) 428 ; 429 else if (acb->chain.tqe_next) { 430 TAILQ_REMOVE(&sc->ready_list, acb, chain); 431 --sc->sc_active; 432 } else { 433 printf("%s: can't find matching acb\n", 434 sc->sc_dev.dv_xname); 435 #ifdef DDB 436 /* Debugger(); */ 437 #endif 438 } 439 SIOP_TRACE('d','n',stat,0); 440 } 441 /* Put it on the free list. */ 442 acb->flags = ACB_FREE; 443 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 444 445 sc->sc_tinfo[periph->periph_target].cmds++; 446 447 scsipi_done(xs); 448 449 if (dosched && sc->sc_nexus == NULL) 450 siopng_sched(sc); 451 } 452 453 void 454 siopngabort(sc, rp, where) 455 register struct siop_softc *sc; 456 siop_regmap_p rp; 457 char *where; 458 { 459 #ifdef fix_this 460 int i; 461 #endif 462 463 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n", 464 sc->sc_dev.dv_xname, 465 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist, 466 rp->siop_sien, rp->siop_sbcl); 467 siopng_dump_registers(sc); 468 469 if (sc->sc_active > 0) { 470 #ifdef TODO 471 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 472 WAIT_CIP (rp); 473 474 GET_SBIC_asr (rp, asr); 475 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 476 { 477 /* ok, get more drastic.. */ 478 479 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 480 delay(25); 481 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 482 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 483 484 return; 485 } 486 487 do 488 { 489 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 490 GET_SBIC_csr (rp, csr); 491 } 492 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 493 && (csr != SBIC_CSR_CMD_INVALID)); 494 #endif 495 496 /* lets just hope it worked.. */ 497 #ifdef fix_this 498 for (i = 0; i < 2; ++i) { 499 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 500 sc->sc_cur) { 501 printf ("siopngabort: cleanup!\n"); 502 sc->sc_iob[i].sc_xs = NULL; 503 } 504 } 505 #endif /* fix_this */ 506 /* sc->sc_active = 0; */ 507 } 508 } 509 510 void 511 siopnginitialize(sc) 512 struct siop_softc *sc; 513 { 514 int i; 515 u_int inhibit_sync; 516 extern u_long scsi_nosync; 517 extern int shift_nosync; 518 519 /* 520 * Need to check that scripts is on a long word boundary 521 * Also should verify that dev doesn't span non-contiguous 522 * physical pages. 523 */ 524 sc->sc_scriptspa = kvtop((caddr_t)siopng_scripts); 525 526 /* 527 * malloc sc_acb to ensure that DS is on a long word boundary. 528 */ 529 530 MALLOC(sc->sc_acb, struct siop_acb *, 531 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 532 if (sc->sc_acb == NULL) 533 panic("siopnginitialize: ACB malloc failed!"); 534 535 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 536 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 537 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 538 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 539 if (sc->sc_minsync < 25) 540 sc->sc_minsync = 25; 541 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */ 542 if (sc->sc_clock_freq <= 25) { 543 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 544 sc->sc_tcp[0] = sc->sc_tcp[1]; 545 } else if (sc->sc_clock_freq <= 37) { 546 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 547 sc->sc_tcp[0] = sc->sc_tcp[2]; 548 } else if (sc->sc_clock_freq <= 50) { 549 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 550 sc->sc_tcp[0] = sc->sc_tcp[3]; 551 } else { 552 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 553 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 554 } 555 556 if (scsi_nosync) { 557 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff; 558 shift_nosync += 16; /* XXX maxtarget */ 559 #ifdef DEBUG 560 if (inhibit_sync) 561 printf("%s: Inhibiting synchronous transfer %02x\n", 562 sc->sc_dev.dv_xname, inhibit_sync); 563 #endif 564 for (i = 0; i < 16; ++i) /* XXX maxtarget */ 565 if (inhibit_sync & (1 << i)) 566 siopng_inhibit_sync[i] = 1; 567 } 568 569 siopngreset (sc); 570 } 571 572 void 573 siopngreset(sc) 574 struct siop_softc *sc; 575 { 576 siop_regmap_p rp; 577 u_int i, s; 578 u_short dummy; 579 struct siop_acb *acb; 580 581 rp = sc->sc_siopp; 582 583 if (sc->sc_flags & SIOP_ALIVE) 584 siopngabort(sc, rp, "reset"); 585 586 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 587 588 s = splbio(); 589 590 /* 591 * Reset the chip 592 * XXX - is this really needed? 593 */ 594 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 595 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 596 rp->siop_istat &= ~SIOP_ISTAT_RST; 597 /* 598 * Reset SCSI bus (do we really want this?) 599 */ 600 rp->siop_sien = 0; 601 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 602 delay(1); 603 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 604 605 /* 606 * Set up various chip parameters 607 */ 608 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */ 609 delay(20); 610 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */ 611 rp->siop_scntl3 = 0x15; /* SCF/CCF*/ 612 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */ 613 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */ 614 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG; 615 rp->siop_dcntl = sc->sc_dcntl; 616 rp->siop_dmode = 0xc0; /* XXX burst length */ 617 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 618 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 619 rp->siop_scid = sc->sc_channel->chan_id | 620 SIOP_SCID_RRE | SIOP_SCID_SRE; 621 rp->siop_respid = 1 << sc->channel->chan_id; 622 rp->siop_dwt = 0x00; 623 rp->siop_stime0 = 0x0c; /* XXXXX check */ 624 625 /* will need to re-negotiate sync xfers */ 626 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 627 628 i = rp->siop_istat; 629 if (i & SIOP_ISTAT_SIP) 630 dummy = rp->siop_sist; 631 if (i & SIOP_ISTAT_DIP) 632 dummy = rp->siop_dstat; 633 634 splx (s); 635 636 delay (siopng_reset_delay * 1000); 637 638 /* 639 * is lower half unterminated? 640 */ 641 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) { 642 printf(" no SCSI termination, host adapter deactivated.\n"); 643 sc->sc_channel->chan_ntargets = 0; /* XXX */ 644 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF); 645 /* disable SCSI and DMA interrupts */ 646 sc->sc_sien = 0; 647 sc->sc_dien = 0; 648 rp->siop_sien = sc->sc_sien; 649 rp->siop_dien = sc->sc_dien; 650 651 return; 652 } 653 654 /* 655 * Check if upper half of SCSI bus is unterminated, and disallow 656 * disconnections if it appears to be unterminated. 657 */ 658 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 659 printf(" NO WIDE TERM"); 660 /* XXX need to restrict maximum target ID as well? */ 661 sc->sc_channel->chan_ntargets = 8; 662 for (i = 0; i < 16; ++i) { 663 siopng_allow_disc[i] = 0; 664 siopng_inhibit_wide[i] |= 0x80; 665 } 666 } 667 668 printf("siopng type %s id %d reset V%d\n", 669 siopng_chips[rp->siop_macntl>>4], 670 sc->sc_channel->chan_ntargets, 671 rp->siop_ctest3 >> 4); 672 673 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 674 TAILQ_INIT(&sc->ready_list); 675 TAILQ_INIT(&sc->nexus_list); 676 TAILQ_INIT(&sc->free_list); 677 sc->sc_nexus = NULL; 678 acb = sc->sc_acb; 679 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 680 for (i = 0; i < SIOP_NACB; i++) { 681 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 682 acb++; 683 } 684 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 685 } else { 686 if (sc->sc_nexus != NULL) { 687 sc->sc_nexus->xs->error = XS_RESET; 688 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 689 } 690 while ((acb = sc->nexus_list.tqh_first) > 0) { 691 acb->xs->error = XS_RESET; 692 siopng_scsidone(acb, acb->stat[0]); 693 } 694 } 695 696 sc->sc_flags |= SIOP_ALIVE; 697 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 698 /* enable SCSI and DMA interrupts */ 699 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 700 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 701 SIOP_SIEN_RST | SIOP_SIEN_PAR; 702 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 703 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 704 rp->siop_sien = sc->sc_sien; 705 rp->siop_dien = sc->sc_dien; 706 /*siopng_dump_registers(sc);*/ 707 } 708 709 /* 710 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 711 */ 712 713 void 714 siopng_start (sc, target, lun, cbuf, clen, buf, len) 715 struct siop_softc *sc; 716 int target; 717 int lun; 718 u_char *cbuf; 719 int clen; 720 u_char *buf; 721 int len; 722 { 723 siop_regmap_p rp = sc->sc_siopp; 724 int nchain; 725 int count, tcount; 726 char *addr, *dmaend; 727 struct siop_acb *acb = sc->sc_nexus; 728 #ifdef DEBUG 729 int i; 730 #endif 731 732 #ifdef DEBUG 733 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 734 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 735 rp, &siopng_scripts, &acb->ds, sc->sc_active); 736 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 737 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 738 rp->siop_sien, rp->siop_dien); 739 #ifdef DDB 740 /*Debugger();*/ 741 #endif 742 } 743 #endif 744 acb->msgout[0] = MSG_IDENTIFY | lun; 745 if (siopng_allow_disc[target] & 2 || 746 (siopng_allow_disc[target] && len == 0)) 747 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 748 acb->status = 0; 749 acb->stat[0] = -1; 750 acb->msg[0] = -1; 751 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 752 (sc->sc_sync[target].scntl3 << 24); 753 acb->ds.idlen = 1; 754 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 755 acb->ds.cmdlen = clen; 756 acb->ds.cmdbuf = (char *) kvtop(cbuf); 757 acb->ds.stslen = 1; 758 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 759 acb->ds.msglen = 1; 760 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 761 acb->msg[1] = -1; 762 acb->ds.msginlen = 1; 763 acb->ds.extmsglen = 1; 764 acb->ds.synmsglen = 3; 765 acb->ds.msginbuf = acb->ds.msgbuf + 1; 766 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 767 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 768 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 769 770 if (sc->sc_sync[target].state == NEG_WIDE) { 771 if (siopng_inhibit_wide[target]) { 772 sc->sc_sync[target].state = NEG_SYNC; 773 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 774 #ifdef DEBUG 775 if (siopngsync_debug) 776 printf ("Forcing target %d narrow\n", target); 777 #endif 778 } 779 else { 780 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 781 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 782 acb->msg[2] = -1; 783 acb->msgout[1] = MSG_EXT_MESSAGE; 784 acb->msgout[2] = 2; 785 acb->msgout[3] = MSG_WIDE_REQ; 786 acb->msgout[4] = 1; 787 acb->ds.idlen = 5; 788 acb->ds.synmsglen = 2; 789 sc->sc_sync[target].state = NEG_WAITW; 790 #ifdef DEBUG 791 if (siopngsync_debug) 792 printf("Sending wide request to target %d\n", target); 793 #endif 794 } 795 } 796 if (sc->sc_sync[target].state == NEG_SYNC) { 797 if (siopng_inhibit_sync[target]) { 798 sc->sc_sync[target].state = NEG_DONE; 799 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 800 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 801 sc->sc_sync[target].sxfer = 0; 802 #ifdef DEBUG 803 if (siopngsync_debug) 804 printf ("Forcing target %d asynchronous\n", target); 805 #endif 806 } 807 else { 808 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 809 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 810 acb->msg[2] = -1; 811 acb->msgout[1] = MSG_EXT_MESSAGE; 812 acb->msgout[2] = 3; 813 acb->msgout[3] = MSG_SYNC_REQ; 814 #ifdef MAXTOR_SYNC_KLUDGE 815 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 816 #else 817 acb->msgout[4] = sc->sc_minsync; 818 #endif 819 acb->msgout[5] = SIOP_MAX_OFFSET; 820 acb->ds.idlen = 6; 821 sc->sc_sync[target].state = NEG_WAITS; 822 #ifdef DEBUG 823 if (siopngsync_debug) 824 printf ("Sending sync request to target %d\n", target); 825 #endif 826 } 827 } 828 829 /* 830 * Build physical DMA addresses for scatter/gather I/O 831 */ 832 acb->iob_buf = buf; 833 acb->iob_len = len; 834 acb->iob_curbuf = acb->iob_curlen = 0; 835 nchain = 0; 836 count = len; 837 addr = buf; 838 dmaend = NULL; 839 while (count > 0) { 840 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 841 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 842 tcount = count; 843 844 #if DEBUG_ONLY_IF_DESPERATE 845 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 846 nchain, count, tcount, addr, 847 acb->ds.chain[nchain].databuf); 848 #endif 849 acb->ds.chain[nchain].datalen = tcount; 850 addr += tcount; 851 count -= tcount; 852 if (acb->ds.chain[nchain].databuf == dmaend) { 853 dmaend += acb->ds.chain[nchain].datalen; 854 acb->ds.chain[nchain].datalen = 0; 855 acb->ds.chain[--nchain].datalen += tcount; 856 #ifdef DEBUG 857 ++siopngdma_hits; 858 #endif 859 } 860 else { 861 dmaend = acb->ds.chain[nchain].databuf + 862 acb->ds.chain[nchain].datalen; 863 acb->ds.chain[nchain].datalen = tcount; 864 #ifdef DEBUG 865 if (nchain) /* Don't count miss on first one */ 866 ++siopngdma_misses; 867 #endif 868 } 869 ++nchain; 870 } 871 #ifdef DEBUG 872 if (nchain != 1 && len != 0 && siopng_debug & 3) { 873 printf ("DMA chaining set: %d\n", nchain); 874 for (i = 0; i < nchain; ++i) { 875 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 876 acb->ds.chain[i].datalen); 877 } 878 } 879 #endif 880 881 /* push data cache for all data the 53c720/770 needs to access */ 882 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 883 dma_cachectl (cbuf, clen); 884 if (buf != NULL && len != 0) 885 dma_cachectl (buf, len); 886 #ifdef DEBUG 887 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 888 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 889 rp, &siopng_scripts, &acb->ds, sc->sc_active); 890 #ifdef DDB 891 /*Debugger();*/ 892 #endif 893 } 894 #endif 895 if (sc->nexus_list.tqh_first == NULL) { 896 if (rp->siop_istat & SIOP_ISTAT_CON) 897 printf("%s: siopng_select while connected?\n", 898 sc->sc_dev.dv_xname); 899 rp->siop_temp = 0; 900 #ifndef FIXME 901 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 902 #endif 903 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 904 rp->siop_dsp = sc->sc_scriptspa; 905 SIOP_TRACE('s',1,0,0) 906 } else { 907 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 908 rp->siop_istat = SIOP_ISTAT_SIGP; 909 SIOP_TRACE('s',2,0,0); 910 } 911 else { 912 SIOP_TRACE('s',3,rp->siop_istat,0); 913 } 914 } 915 #ifdef DEBUG 916 ++siopngstarts; 917 #endif 918 } 919 920 /* 921 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 922 */ 923 924 int 925 siopng_checkintr(sc, istat, dstat, sist, status) 926 struct siop_softc *sc; 927 u_char istat; 928 u_char dstat; 929 u_short sist; 930 int *status; 931 { 932 siop_regmap_p rp = sc->sc_siopp; 933 struct siop_acb *acb = sc->sc_nexus; 934 int target = 0; 935 int dfifo, dbc, sstat0, sstat1, sstat2; 936 937 dfifo = rp->siop_dfifo; 938 dbc = rp->siop_dbc0; 939 sstat0 = rp->siop_sstat0; 940 sstat1 = rp->siop_sstat1; 941 sstat2 = rp->siop_sstat2; 942 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 943 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 944 ; 945 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 946 #ifdef DEBUG 947 ++siopngints; 948 #if 0 949 if (siopng_debug & 0x100) { 950 DCIAS(&acb->stat[0]); /* XXX */ 951 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 952 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 953 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 954 acb->msg[0], acb->msg[1], acb->msg[2], 955 acb->msg[3], acb->msg[4], acb->msg[5]); 956 } 957 #endif 958 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 959 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 960 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 961 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 962 sc->sc_scriptspa + sizeof(siopng_scripts)); 963 printf(" istat %x dstat %x sist %x\n", 964 istat, dstat, sist); 965 #ifdef DDB 966 Debugger(); 967 #endif 968 } 969 #endif 970 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 971 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 972 /* Normal completion status, or check condition */ 973 #ifdef DEBUG 974 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 975 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 976 kvtop((caddr_t)&acb->ds)); 977 panic("*** siopng DSA invalid ***"); 978 } 979 #endif 980 target = acb->xs->xs_periph->periph_target; 981 if (sc->sc_sync[target].state == NEG_WAITW) { 982 if (acb->msg[1] == 0xff) 983 printf ("%s: target %d ignored wide request\n", 984 sc->sc_dev.dv_xname, target); 985 else if (acb->msg[1] == MSG_REJECT) 986 printf ("%s: target %d rejected wide request\n", 987 sc->sc_dev.dv_xname, target); 988 else { 989 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 990 sc->sc_dev.dv_xname, target, acb->msg[1], 991 acb->msg[2], acb->msg[3], acb->msg[4]); 992 if (acb->msg[1] == MSG_EXT_MESSAGE && 993 acb->msg[2] == 2 && 994 acb->msg[3] == MSG_WIDE_REQ) 995 sc->sc_sync[target].scntl3 = acb->msg[4] ? 996 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 997 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 998 } 999 sc->sc_sync[target].state = NEG_SYNC; 1000 } 1001 if (sc->sc_sync[target].state == NEG_WAITS) { 1002 if (acb->msg[1] == 0xff) 1003 printf ("%s: target %d ignored sync request\n", 1004 sc->sc_dev.dv_xname, target); 1005 else if (acb->msg[1] == MSG_REJECT) 1006 printf ("%s: target %d rejected sync request\n", 1007 sc->sc_dev.dv_xname, target); 1008 else 1009 /* XXX - need to set sync transfer parameters */ 1010 printf("%s: target %d (sync) %02x %02x %02x\n", 1011 sc->sc_dev.dv_xname, target, acb->msg[1], 1012 acb->msg[2], acb->msg[3]); 1013 sc->sc_sync[target].state = NEG_DONE; 1014 } 1015 dma_cachectl(&acb->stat[0], 1); 1016 *status = acb->stat[0]; 1017 #ifdef DEBUG 1018 if (rp->siop_sbcl & SIOP_BSY) { 1019 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1020 rp, &siopng_scripts, &acb->ds);*/ 1021 #ifdef DDB 1022 /*Debugger();*/ 1023 #endif 1024 } 1025 if (acb->msg[0] != 0x00) 1026 printf("%s: message was not COMMAND COMPLETE: %x\n", 1027 sc->sc_dev.dv_xname, acb->msg[0]); 1028 #endif 1029 if (sc->nexus_list.tqh_first) 1030 rp->siop_dcntl |= SIOP_DCNTL_STD; 1031 return 1; 1032 } 1033 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1034 target = acb->xs->xs_periph->periph_target; 1035 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1036 acb->msg[3] == MSG_WIDE_REQ) { 1037 #ifdef DEBUG 1038 if (siopngsync_debug) 1039 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1040 acb->msg[0], acb->msg[1], acb->msg[2], 1041 acb->msg[3], acb->msg[4], acb->msg[5]); 1042 #endif 1043 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1044 if (acb->msg[2] == 2 && 1045 acb->msg[3] == MSG_WIDE_REQ && 1046 acb->msg[4] != 0) { 1047 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1048 printf ("%s: target %d now wide %d\n", 1049 sc->sc_dev.dv_xname, target, 1050 acb->msg[4]); 1051 } 1052 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1053 if (sc->sc_sync[target].state == NEG_WAITW) { 1054 sc->sc_sync[target].state = NEG_SYNC; 1055 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1056 return(0); 1057 } 1058 rp->siop_dcntl |= SIOP_DCNTL_STD; 1059 sc->sc_sync[target].state = NEG_SYNC; 1060 return (0); 1061 } 1062 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1063 acb->msg[3] == MSG_SYNC_REQ) { 1064 #ifdef DEBUG 1065 if (siopngsync_debug) 1066 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1067 acb->msg[0], acb->msg[1], acb->msg[2], 1068 acb->msg[3], acb->msg[4], acb->msg[5]); 1069 #endif 1070 sc->sc_sync[target].sxfer = 0; 1071 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1072 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1073 if (acb->msg[2] == 3 && 1074 acb->msg[3] == MSG_SYNC_REQ && 1075 acb->msg[5] != 0) { 1076 #ifdef MAXTOR_KLUDGE 1077 /* 1078 * Kludge for my Maxtor XT8580S 1079 * It accepts whatever we request, even 1080 * though it won't work. So we ask for 1081 * a short period than we can handle. If 1082 * the device says it can do it, use 208ns. 1083 * If the device says it can do less than 1084 * 100ns, then we limit it to 100ns. 1085 */ 1086 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1087 #ifdef DEBUG 1088 printf ("%d: target %d wanted %dns period\n", 1089 sc->sc_dev.dv_xname, target, 1090 acb->msg[4] * 4); 1091 #endif 1092 if (acb->msg[4] == 50 / 4) 1093 acb->msg[4] = 208 / 4; 1094 else 1095 acb->msg[4] = 100 / 4; 1096 } 1097 #endif /* MAXTOR_KLUDGE */ 1098 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1099 sc->sc_dev.dv_xname, target, 1100 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4, 1101 acb->msg[5]); 1102 scsi_period_to_siopng (sc, target); 1103 } 1104 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1105 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1106 if (sc->sc_sync[target].state == NEG_WAITS) { 1107 sc->sc_sync[target].state = NEG_DONE; 1108 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1109 return(0); 1110 } 1111 rp->siop_dcntl |= SIOP_DCNTL_STD; 1112 sc->sc_sync[target].state = NEG_DONE; 1113 return (0); 1114 } 1115 /* XXX - not SDTR message */ 1116 } 1117 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1118 #ifdef DEBUG 1119 ++siopngphmm; 1120 if (acb == NULL) 1121 printf("%s: Phase mismatch with no active command?\n", 1122 sc->sc_dev.dv_xname); 1123 #endif 1124 if (acb->iob_len) { 1125 int adjust; 1126 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1127 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1128 ++adjust; 1129 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1130 ++adjust; 1131 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1132 ++adjust; 1133 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1134 ++adjust; 1135 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1136 acb->iob_curlen += adjust; 1137 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1138 #ifdef DEBUG 1139 if (siopng_debug & 0x100) { 1140 int i; 1141 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1142 acb->iob_curbuf, acb->iob_curlen, dfifo, 1143 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1144 if (acb->ds.chain[1].datalen) { 1145 for (i = 0; acb->ds.chain[i].datalen; ++i) 1146 printf("chain[%d] addr %p len %lx\n", 1147 i, acb->ds.chain[i].databuf, 1148 acb->ds.chain[i].datalen); 1149 } 1150 } 1151 #endif 1152 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1153 } 1154 #ifdef DEBUG 1155 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1156 if (siopng_debug & 9) 1157 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1158 rp->siop_sbcl, 1159 rp->siop_dsp - sc->sc_scriptspa, 1160 *((long *)&rp->siop_dcmd)); 1161 #endif 1162 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1163 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1164 rp->siop_sbcl, rp->siop_dsp); 1165 #if defined(DEBUG) && defined(DDB) 1166 Debugger(); 1167 #endif 1168 } 1169 switch (rp->siop_sbcl & 7) { 1170 case 0: /* data out */ 1171 case 1: /* data in */ 1172 case 2: /* status */ 1173 case 3: /* command */ 1174 case 6: /* message in */ 1175 case 7: /* message out */ 1176 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1177 break; 1178 default: 1179 goto bad_phase; 1180 } 1181 return 0; 1182 } 1183 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1184 #ifdef DEBUG 1185 if (acb == NULL) 1186 printf("%s: Select timeout with no active command?\n", 1187 sc->sc_dev.dv_xname); 1188 if (rp->siop_sbcl & SIOP_BSY) { 1189 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1190 rp, &siopng_scripts, &acb->ds); 1191 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1192 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1193 if (!(rp->siop_sbcl & SIOP_BSY)) { 1194 printf ("Yikes, it's not busy now!\n"); 1195 #if 0 1196 *status = -1; 1197 if (sc->nexus_list.tqh_first) 1198 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1199 return 1; 1200 #endif 1201 } 1202 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1203 return (0); 1204 #ifdef DDB 1205 Debugger(); 1206 #endif 1207 } 1208 #endif 1209 *status = -1; 1210 acb->xs->error = XS_SELTIMEOUT; 1211 if (sc->nexus_list.tqh_first) 1212 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1213 return 1; 1214 } 1215 if (acb) 1216 target = acb->xs->xs_periph->periph_target; 1217 else 1218 target = 7; 1219 if (sist & SIOP_SIST_UDC) { 1220 #ifdef DEBUG 1221 if (acb == NULL) 1222 printf("%s: Unexpected disconnect with no active command?\n", 1223 sc->sc_dev.dv_xname); 1224 printf ("%s: target %d disconnected unexpectedly\n", 1225 sc->sc_dev.dv_xname, target); 1226 siopng_dump_registers(sc); 1227 siopng_dump(sc); 1228 #endif 1229 #if 0 1230 siopngabort (sc, rp, "siopngchkintr"); 1231 #endif 1232 *status = STS_BUSY; 1233 if (sc->nexus_list.tqh_first) 1234 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1235 return (acb != NULL); 1236 } 1237 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1238 rp->siop_dsps == 0xff02)) { 1239 #ifdef DEBUG 1240 if (siopng_debug & 0x100) 1241 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", 1242 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1243 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1244 acb->iob_curbuf, acb->iob_curlen, 1245 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1246 #endif 1247 if (acb == NULL) { 1248 printf("%s: Disconnect with no active command?\n", 1249 sc->sc_dev.dv_xname); 1250 return (0); 1251 } 1252 /* 1253 * XXXX need to update iob_curbuf/iob_curlen to reflect 1254 * current data transferred. If device disconnected in 1255 * the middle of a DMA block, they should already be set 1256 * by the phase change interrupt. If the disconnect 1257 * occurs on a DMA block boundary, we have to figure out 1258 * which DMA block it was. 1259 */ 1260 if (acb->iob_len && rp->siop_temp) { 1261 int n = rp->siop_temp - sc->sc_scriptspa; 1262 1263 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1264 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1265 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1266 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1267 if (n < Ent_datain) 1268 n = (n - Ent_dataout) / 16; 1269 else 1270 n = (n - Ent_datain) / 16; 1271 if (n <= 0 && n > DMAMAXIO) 1272 printf("TEMP invalid %d\n", n); 1273 else { 1274 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1275 acb->iob_curlen = acb->ds.chain[n].datalen; 1276 } 1277 #ifdef DEBUG 1278 if (siopng_debug & 0x100) { 1279 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1280 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1281 acb->iob_curlen); 1282 } 1283 #endif 1284 } 1285 /* 1286 * If data transfer was interrupted by disconnect, iob_curbuf 1287 * and iob_curlen should reflect the point of interruption. 1288 * Adjust the DMA chain so that the data transfer begins 1289 * at the appropriate place upon reselection. 1290 * XXX This should only be done on save data pointer message? 1291 */ 1292 if (acb->iob_curlen) { 1293 int i, j; 1294 1295 #ifdef DEBUG 1296 if (siopng_debug & 0x100) 1297 printf ("%s: adjusting DMA chain\n", 1298 sc->sc_dev.dv_xname); 1299 if (rp->siop_dsps == 0xff02) 1300 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1301 sc->sc_dev.dv_xname, 1 << target); 1302 #endif 1303 for (i = 0; i < DMAMAXIO; ++i) { 1304 if (acb->ds.chain[i].datalen == 0) 1305 break; 1306 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1307 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1308 acb->ds.chain[i].datalen)) 1309 break; 1310 } 1311 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1312 printf("couldn't find saved data pointer: "); 1313 printf("curbuf %lx curlen %lx i %d\n", 1314 acb->iob_curbuf, acb->iob_curlen, i); 1315 #ifdef DDB 1316 Debugger(); 1317 #endif 1318 } 1319 #ifdef DEBUG 1320 if (siopng_debug & 0x100) 1321 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1322 acb->ds.chain[0].databuf, 1323 acb->ds.chain[0].datalen, 1324 acb->iob_curbuf, 1325 acb->iob_curlen); 1326 #endif 1327 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1328 acb->ds.chain[0].datalen = acb->iob_curlen; 1329 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1330 #ifdef DEBUG 1331 if (siopng_debug & 0x100) 1332 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1333 acb->ds.chain[j].databuf, 1334 acb->ds.chain[j].datalen, 1335 acb->ds.chain[i].databuf, 1336 acb->ds.chain[i].datalen); 1337 #endif 1338 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1339 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1340 } 1341 if (j < DMAMAXIO) 1342 acb->ds.chain[j].datalen = 0; 1343 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1344 } 1345 ++sc->sc_tinfo[target].dconns; 1346 /* 1347 * add nexus to waiting list 1348 * clear nexus 1349 * try to start another command for another target/lun 1350 */ 1351 acb->status = sc->sc_flags & SIOP_INTSOFF; 1352 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1353 sc->sc_nexus = NULL; /* no current device */ 1354 /* start script to wait for reselect */ 1355 if (sc->sc_nexus == NULL) 1356 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1357 /* XXXX start another command ? */ 1358 if (sc->ready_list.tqh_first) 1359 siopng_sched(sc); 1360 #if 0 1361 else 1362 rp->siop_dcntl |= SIOP_DCNTL_STD; 1363 #endif 1364 return (0); 1365 } 1366 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1367 int reselid = rp->siop_scratcha & 0x7f; 1368 int reselun = rp->siop_sfbr & 0x07; 1369 1370 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1371 #ifdef DEBUG 1372 if (siopng_debug & 0x100) 1373 printf ("%s: target ID %02x reselected dsps %lx\n", 1374 sc->sc_dev.dv_xname, reselid, 1375 rp->siop_dsps); 1376 if ((rp->siop_sfbr & 0x80) == 0) 1377 printf("%s: Reselect message in was not identify: %x\n", 1378 sc->sc_dev.dv_xname, rp->siop_sfbr); 1379 #endif 1380 if (sc->sc_nexus) { 1381 #ifdef DEBUG 1382 if (siopng_debug & 0x100) 1383 printf ("%s: reselect ID %02x w/active\n", 1384 sc->sc_dev.dv_xname, reselid); 1385 #endif 1386 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1387 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1388 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1389 --sc->sc_active; 1390 } 1391 /* 1392 * locate acb of reselecting device 1393 * set sc->sc_nexus to acb 1394 */ 1395 for (acb = sc->nexus_list.tqh_first; acb; 1396 acb = acb->chain.tqe_next) { 1397 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1398 reselun != (acb->msgout[0] & 0x07)) 1399 continue; 1400 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1401 sc->sc_nexus = acb; 1402 sc->sc_flags |= acb->status; 1403 acb->status = 0; 1404 DCIAS(kvtop(&acb->stat[0])); 1405 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1406 rp->siop_sxfer = 1407 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1408 #ifndef FIXME 1409 rp->siop_scntl3 = 1410 sc->sc_sync[acb->xs->xs_periph->periph_target].scntl3; 1411 #endif 1412 break; 1413 } 1414 if (acb == NULL) { 1415 printf("%s: target ID %02x reselect nexus_list %p\n", 1416 sc->sc_dev.dv_xname, reselid, 1417 sc->nexus_list.tqh_first); 1418 panic("unable to find reselecting device"); 1419 } 1420 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1421 rp->siop_temp = 0; 1422 rp->siop_dcntl |= SIOP_DCNTL_STD; 1423 return (0); 1424 } 1425 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1426 #ifdef DEBUG 1427 u_short ctest2 = rp->siop_ctest2; 1428 1429 /* reselect was interrupted (by Sig_P or select) */ 1430 if (siopng_debug & 0x100 || 1431 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1432 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1433 sc->sc_dev.dv_xname, rp->siop_scntl1, 1434 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1435 #endif 1436 /* XXX assumes it was not select */ 1437 if (sc->sc_nexus == NULL) { 1438 #ifdef DEBUG 1439 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1440 sc->sc_dev.dv_xname); 1441 #if 0 1442 siopng_dump(sc); 1443 #ifdef DDB 1444 Debugger(); 1445 #endif 1446 #endif 1447 #endif 1448 rp->siop_dcntl |= SIOP_DCNTL_STD; 1449 return(0); 1450 } 1451 target = sc->sc_nexus->xs->xs_periph->periph_target; 1452 rp->siop_temp = 0; 1453 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1454 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1455 #ifndef FIXME 1456 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1457 #endif 1458 rp->siop_dsp = sc->sc_scriptspa; 1459 return (0); 1460 } 1461 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1462 if (acb == NULL) 1463 printf("%s: Bad message-in with no active command?\n", 1464 sc->sc_dev.dv_xname); 1465 /* Unrecognized message in byte */ 1466 dma_cachectl (&acb->msg[1],1); 1467 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1468 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1469 /* what should be done here? */ 1470 DCIAS(kvtop(&acb->msg[1])); 1471 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1472 return (0); 1473 } 1474 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1475 /* Status phase wasn't followed by message in phase? */ 1476 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1477 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1478 if (rp->siop_sbcl == 0xa7) { 1479 /* It is now, just continue the script? */ 1480 rp->siop_dcntl |= SIOP_DCNTL_STD; 1481 return (0); 1482 } 1483 } 1484 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1485 dma_cachectl (&acb->stat[0], 1); 1486 dma_cachectl (&acb->msg[0], 1); 1487 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1488 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1489 rp->siop_sbcl); 1490 siopngreset (sc); 1491 *status = -1; 1492 return 0; /* siopngreset has cleaned up */ 1493 } 1494 if (sist & SIOP_SIST_SGE) 1495 printf ("SIOP: SCSI Gross Error\n"); 1496 if (sist & SIOP_SIST_PAR) 1497 printf ("SIOP: Parity Error\n"); 1498 if (dstat & SIOP_DSTAT_IID) 1499 printf ("SIOP: Invalid instruction detected\n"); 1500 bad_phase: 1501 /* 1502 * temporary panic for unhandled conditions 1503 * displays various things about the 53C720/770 status and registers 1504 * then panics. 1505 * XXXX need to clean this up to print out the info, reset, and continue 1506 */ 1507 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1508 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1509 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1510 *((long *)&rp->siop_dcmd)); 1511 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1512 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1513 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1514 #ifdef DEBUG 1515 if (siopng_debug & 0x20) 1516 panic("siopngchkintr: **** temp ****"); 1517 #endif 1518 #ifdef DDB 1519 Debugger (); 1520 #endif 1521 siopngreset (sc); /* hard reset */ 1522 *status = -1; 1523 return 0; /* siopngreset cleaned up */ 1524 } 1525 1526 void 1527 siopng_select(sc) 1528 struct siop_softc *sc; 1529 { 1530 siop_regmap_p rp; 1531 struct siop_acb *acb = sc->sc_nexus; 1532 1533 #ifdef DEBUG 1534 if (siopng_debug & 1) 1535 printf ("%s: select ", sc->sc_dev.dv_xname); 1536 #endif 1537 1538 rp = sc->sc_siopp; 1539 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) { 1540 sc->sc_flags |= SIOP_INTSOFF; 1541 sc->sc_flags &= ~SIOP_INTDEFER; 1542 if ((rp->siop_istat & 0x08) == 0) { 1543 rp->siop_sien = 0; 1544 rp->siop_dien = 0; 1545 } 1546 #if 0 1547 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1548 sc->sc_flags &= ~SIOP_INTSOFF; 1549 if ((rp->siop_istat & 0x08) == 0) { 1550 rp->siop_sien = sc->sc_sien; 1551 rp->siop_dien = sc->sc_dien; 1552 } 1553 #endif 1554 } 1555 #ifdef DEBUG 1556 if (siopng_debug & 1) 1557 printf ("siopng_select: target %x cmd %02x ds %p\n", 1558 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1559 &sc->sc_nexus->ds); 1560 #endif 1561 1562 siopng_start(sc, acb->xs->xs_periph->periph_target, 1563 acb->xs->xs_periph->periph_lun, 1564 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1565 1566 return; 1567 } 1568 1569 /* 1570 * 53C720/770 interrupt handler 1571 */ 1572 1573 void 1574 siopngintr (sc) 1575 register struct siop_softc *sc; 1576 { 1577 siop_regmap_p rp; 1578 u_char istat, dstat; 1579 u_short sist; 1580 int status; 1581 int s = splbio(); 1582 1583 istat = sc->sc_istat; 1584 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1585 splx(s); 1586 return; 1587 } 1588 1589 /* Got a valid interrupt on this device */ 1590 rp = sc->sc_siopp; 1591 dstat = sc->sc_dstat; 1592 sist = sc->sc_sist; 1593 if (dstat & SIOP_DSTAT_SIR) 1594 sc->sc_intcode = rp->siop_dsps; 1595 sc->sc_istat = 0; 1596 #ifdef DEBUG 1597 if (siopng_debug & 1) 1598 printf ("%s: intr istat %x dstat %x sist %x\n", 1599 sc->sc_dev.dv_xname, istat, dstat, sist); 1600 if (!sc->sc_active) { 1601 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1602 sc->sc_dev.dv_xname, istat, dstat, sist, 1603 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1604 } 1605 #endif 1606 1607 #ifdef DEBUG 1608 if (siopng_debug & 5) { 1609 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1610 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1611 sc->sc_dev.dv_xname, istat, dstat, sist, 1612 rp->siop_dsps, rp->siop_sbcl, 1613 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1614 } 1615 #endif 1616 if (sc->sc_flags & SIOP_INTDEFER) { 1617 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1618 rp->siop_sien = sc->sc_sien; 1619 rp->siop_dien = sc->sc_dien; 1620 } 1621 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1622 #if 1 1623 if (status == 0xff) 1624 printf ("siopngintr: status == 0xff\n"); 1625 #endif 1626 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1627 #if 0 1628 if (rp->siop_sbcl & SIOP_BSY) { 1629 printf ("%s: SCSI bus busy at completion", 1630 sc->sc_dev.dv_xname); 1631 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1632 sc->sc_nexus->xs->xs_periph->periph_target, 1633 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1634 rp->siop_dsp - sc->sc_scriptspa); 1635 } 1636 #endif 1637 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1638 sc->sc_nexus->stat[0] : -1); 1639 } 1640 } 1641 splx(s); 1642 } 1643 1644 /* 1645 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1646 * not be correct for other 53c710 boards. 1647 * 1648 */ 1649 void 1650 scsi_period_to_siopng (sc, target) 1651 struct siop_softc *sc; 1652 int target; 1653 { 1654 int period, offset, sxfer, scntl3 = 0; 1655 1656 period = sc->sc_nexus->msg[4]; 1657 offset = sc->sc_nexus->msg[5]; 1658 #ifdef FIXME 1659 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1660 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1661 if (sxfer >= 0 && sxfer <= 7) 1662 break; 1663 } 1664 if (scntl3 > 3) { 1665 printf("siopng sync: unable to compute sync params for period %dns\n", 1666 period * 4); 1667 /* 1668 * XXX need to pick a value we can do and renegotiate 1669 */ 1670 sxfer = scntl3 = 0; 1671 } else { 1672 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1673 offset : SIOP_MAX_OFFSET); 1674 #ifdef DEBUG_SYNC 1675 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1676 period * 4, sxfer, scntl3); 1677 printf(" actual period %dns\n", 1678 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1679 #endif /* DEBUG_SYNC */ 1680 } 1681 #else /* FIXME */ 1682 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1683 sxfer |= 0x20; /* XXX XFERP: 5 */ 1684 #ifndef FIXME 1685 if (period <= (50 / 4)) /* XXX */ 1686 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1687 else if (period <= (100 / 4)) 1688 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1689 else if (period <= (200 / 4)) 1690 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1691 else 1692 scntl3 = 0xff; /* XXX ??? */ 1693 #else 1694 scntl3 = 5; 1695 #endif 1696 #endif 1697 sc->sc_sync[target].sxfer = sxfer; 1698 sc->sc_sync[target].scntl3 = scntl3 | 1699 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1700 #ifdef DEBUG_SYNC 1701 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1702 #endif 1703 } 1704 1705 void 1706 siopng_dump_registers(sc) 1707 struct siop_softc *sc; 1708 { 1709 siop_regmap_p rp = sc->sc_siopp; 1710 1711 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1712 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1713 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1714 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1715 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1716 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1717 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1718 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1719 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1720 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1721 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1722 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1723 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1724 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1725 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1726 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1727 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1728 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1729 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1730 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1731 printf(" sidl %04x sodl %04x sbdl %04x\n", 1732 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1733 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1734 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1735 rp->siop_dsp - sc->sc_scriptspa : 0); 1736 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1737 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1738 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1739 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1740 } 1741 1742 #ifdef DEBUG 1743 1744 #if SIOP_TRACE_SIZE 1745 void 1746 siopng_dump_trace() 1747 { 1748 int i; 1749 1750 printf("siopng trace: next index %d\n", siopng_trix); 1751 i = siopng_trix; 1752 do { 1753 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1754 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1755 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1756 } while (i != siopng_trix); 1757 } 1758 #endif 1759 1760 void 1761 siopng_dump_acb(acb) 1762 struct siop_acb *acb; 1763 { 1764 u_char *b = (u_char *) &acb->cmd; 1765 int i; 1766 1767 printf("acb@%p ", acb); 1768 if (acb->xs == NULL) { 1769 printf("<unused>\n"); 1770 return; 1771 } 1772 printf("(%d:%d) flags %2x clen %2d cmd ", 1773 acb->xs->xs_periph->periph_target, 1774 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1775 for (i = acb->clen; i; --i) 1776 printf(" %02x", *b++); 1777 printf("\n"); 1778 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1779 acb->xs->datalen); 1780 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1781 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1782 } 1783 1784 void 1785 siopng_dump(sc) 1786 struct siop_softc *sc; 1787 { 1788 struct siop_acb *acb; 1789 siop_regmap_p rp = sc->sc_siopp; 1790 int s; 1791 int i; 1792 1793 s = splbio(); 1794 #if SIOP_TRACE_SIZE 1795 siopng_dump_trace(); 1796 #endif 1797 printf("%s@%p regs %p istat %x\n", 1798 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1799 if ((acb = sc->free_list.tqh_first) > 0) { 1800 printf("Free list:\n"); 1801 while (acb) { 1802 siopng_dump_acb(acb); 1803 acb = acb->chain.tqe_next; 1804 } 1805 } 1806 if ((acb = sc->ready_list.tqh_first) > 0) { 1807 printf("Ready list:\n"); 1808 while (acb) { 1809 siopng_dump_acb(acb); 1810 acb = acb->chain.tqe_next; 1811 } 1812 } 1813 if ((acb = sc->nexus_list.tqh_first) > 0) { 1814 printf("Nexus list:\n"); 1815 while (acb) { 1816 siopng_dump_acb(acb); 1817 acb = acb->chain.tqe_next; 1818 } 1819 } 1820 if (sc->sc_nexus) { 1821 printf("Nexus:\n"); 1822 siopng_dump_acb(sc->sc_nexus); 1823 } 1824 for (i = 0; i < 8; ++i) { 1825 if (sc->sc_tinfo[i].cmds > 2) { 1826 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1827 i, sc->sc_tinfo[i].cmds, 1828 sc->sc_tinfo[i].dconns, 1829 sc->sc_tinfo[i].lubusy); 1830 } 1831 } 1832 splx(s); 1833 } 1834 #endif 1835
Indexes created Thu Oct 02 14:10:14 GMT 2025