siop.c revision 1.44
1 /* $NetBSD: siop.c,v 1.44 2001/04/25 17:53:09 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Van Jacobson of Lawrence Berkeley Laboratory. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)siop.c 7.5 (Berkeley) 5/4/91 40 */ 41 42 /* 43 * AMIGA 53C710 scsi adaptor driver 44 */ 45 46 #include "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/cacheops.h> 61 #endif 62 #include <amiga/amiga/custom.h> 63 #include <amiga/amiga/isr.h> 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 siop_select __P((struct siop_softc *)); 76 void siopabort __P((struct siop_softc *, siop_regmap_p, char *)); 77 void sioperror __P((struct siop_softc *, siop_regmap_p, u_char)); 78 void siopstart __P((struct siop_softc *)); 79 int siop_checkintr __P((struct siop_softc *, u_char, u_char, u_char, int *)); 80 void siopreset __P((struct siop_softc *)); 81 void siopsetdelay __P((int)); 82 void siop_scsidone __P((struct siop_acb *, int)); 83 void siop_sched __P((struct siop_softc *)); 84 void siop_poll __P((struct siop_softc *, struct siop_acb *)); 85 void siopintr __P((struct siop_softc *)); 86 void scsi_period_to_siop __P((struct siop_softc *, int)); 87 void siop_start __P((struct siop_softc *, int, int, u_char *, int, u_char *, int)); 88 void siop_dump_acb __P((struct siop_acb *)); 89 90 /* 53C710 script */ 91 const 92 #include <amiga/dev/siop_script.out> 93 94 /* default to not inhibit sync negotiation on any drive */ 95 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 96 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 97 int siop_no_dma = 0; 98 99 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 100 101 int siop_cmd_wait = SCSI_CMD_WAIT; 102 int siop_data_wait = SCSI_DATA_WAIT; 103 int siop_init_wait = SCSI_INIT_WAIT; 104 105 #ifdef DEBUG_SYNC 106 /* 107 * sync period transfer lookup - only valid for 66Mhz clock 108 */ 109 static struct { 110 unsigned char p; /* period from sync request message */ 111 unsigned char r; /* siop_period << 4 | sbcl */ 112 } sync_tab[] = { 113 { 60/4, 0<<4 | 1}, 114 { 76/4, 1<<4 | 1}, 115 { 92/4, 2<<4 | 1}, 116 { 92/4, 0<<4 | 2}, 117 {108/4, 3<<4 | 1}, 118 {116/4, 1<<4 | 2}, 119 {120/4, 4<<4 | 1}, 120 {120/4, 0<<4 | 3}, 121 {136/4, 5<<4 | 1}, 122 {140/4, 2<<4 | 2}, 123 {152/4, 6<<4 | 1}, 124 {152/4, 1<<4 | 3}, 125 {164/4, 3<<4 | 2}, 126 {168/4, 7<<4 | 1}, 127 {180/4, 2<<4 | 3}, 128 {184/4, 4<<4 | 2}, 129 {208/4, 5<<4 | 2}, 130 {212/4, 3<<4 | 3}, 131 {232/4, 6<<4 | 2}, 132 {240/4, 4<<4 | 3}, 133 {256/4, 7<<4 | 2}, 134 {272/4, 5<<4 | 3}, 135 {300/4, 6<<4 | 3}, 136 {332/4, 7<<4 | 3} 137 }; 138 #endif 139 140 #ifdef DEBUG 141 /* 142 * 0x01 - full debug 143 * 0x02 - DMA chaining 144 * 0x04 - siopintr 145 * 0x08 - phase mismatch 146 * 0x10 - <not used> 147 * 0x20 - panic on unhandled exceptions 148 * 0x100 - disconnect/reselect 149 */ 150 int siop_debug = 0; 151 int siopsync_debug = 0; 152 int siopdma_hits = 0; 153 int siopdma_misses = 0; 154 int siopchain_ints = 0; 155 int siopstarts = 0; 156 int siopints = 0; 157 int siopphmm = 0; 158 #define SIOP_TRACE_SIZE 128 159 #define SIOP_TRACE(a,b,c,d) \ 160 siop_trbuf[siop_trix] = (a); \ 161 siop_trbuf[siop_trix+1] = (b); \ 162 siop_trbuf[siop_trix+2] = (c); \ 163 siop_trbuf[siop_trix+3] = (d); \ 164 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 165 u_char siop_trbuf[SIOP_TRACE_SIZE]; 166 int siop_trix; 167 void siop_dump __P((struct siop_softc *)); 168 void siop_dump_trace __P((void)); 169 #else 170 #define SIOP_TRACE(a,b,c,d) 171 #endif 172 173 174 /* 175 * default minphys routine for siop based controllers 176 */ 177 void 178 siop_minphys(bp) 179 struct buf *bp; 180 { 181 182 /* 183 * No max transfer at this level. 184 */ 185 minphys(bp); 186 } 187 188 /* 189 * used by specific siop controller 190 * 191 */ 192 void 193 siop_scsipi_request(chan, req, arg) 194 struct scsipi_channel *chan; 195 scsipi_adapter_req_t req; 196 void *arg; 197 { 198 struct scsipi_xfer *xs; 199 struct scsipi_periph *periph; 200 struct siop_acb *acb; 201 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 202 int flags, s; 203 204 switch (req) { 205 case ADAPTER_REQ_RUN_XFER: 206 xs = arg; 207 periph = xs->xs_periph; 208 flags = xs->xs_control; 209 210 /* XXXX ?? */ 211 if (flags & XS_CTL_DATA_UIO) 212 panic("siop: scsi data uio requested"); 213 214 /* XXXX ?? */ 215 if (sc->sc_nexus && flags & XS_CTL_POLL) 216 /* panic("siop_scsicmd: busy");*/ 217 printf("siop_scsicmd: busy\n"); 218 219 s = splbio(); 220 acb = sc->free_list.tqh_first; 221 if (acb) { 222 TAILQ_REMOVE(&sc->free_list, acb, chain); 223 } 224 splx(s); 225 226 #ifdef DIAGNOSTIC 227 /* 228 * This should never happen as we track the resources 229 * in the mid-layer. 230 */ 231 if (acb == NULL) { 232 scsipi_printaddr(periph); 233 printf("unable to allocate acb\n"); 234 panic("siop_scsipi_request"); 235 } 236 #endif 237 238 acb->flags = ACB_ACTIVE; 239 acb->xs = xs; 240 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 241 acb->clen = xs->cmdlen; 242 acb->daddr = xs->data; 243 acb->dleft = xs->datalen; 244 245 s = splbio(); 246 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 247 248 if (sc->sc_nexus == NULL) 249 siop_sched(sc); 250 251 splx(s); 252 253 if (flags & XS_CTL_POLL || siop_no_dma) 254 siop_poll(sc, acb); 255 return; 256 257 case ADAPTER_REQ_GROW_RESOURCES: 258 return; 259 260 case ADAPTER_REQ_SET_XFER_MODE: 261 return; 262 } 263 } 264 265 void 266 siop_poll(sc, acb) 267 struct siop_softc *sc; 268 struct siop_acb *acb; 269 { 270 siop_regmap_p rp = sc->sc_siopp; 271 struct scsipi_xfer *xs = acb->xs; 272 int i; 273 int status; 274 u_char istat; 275 u_char dstat; 276 u_char sstat0; 277 int s; 278 int to; 279 280 s = splbio(); 281 to = xs->timeout / 1000; 282 if (sc->nexus_list.tqh_first) 283 printf("%s: siop_poll called with disconnected device\n", 284 sc->sc_dev.dv_xname); 285 for (;;) { 286 /* use cmd_wait values? */ 287 i = 50000; 288 /* XXX spl0(); */ 289 while (((istat = rp->siop_istat) & 290 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 291 if (--i <= 0) { 292 #ifdef DEBUG 293 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 294 xs->xs_periph->periph_target, acb->cmd.opcode, 295 rp->siop_sbcl, rp->siop_dsp, 296 rp->siop_dsp - sc->sc_scriptspa, 297 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 298 #endif 299 i = 50000; 300 --to; 301 if (to <= 0) { 302 siopreset(sc); 303 return; 304 } 305 } 306 delay(20); 307 } 308 sstat0 = rp->siop_sstat0; 309 dstat = rp->siop_dstat; 310 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 311 if (acb != sc->sc_nexus) 312 printf("%s: siop_poll disconnected device completed\n", 313 sc->sc_dev.dv_xname); 314 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 315 sc->sc_flags &= ~SIOP_INTSOFF; 316 rp->siop_sien = sc->sc_sien; 317 rp->siop_dien = sc->sc_dien; 318 } 319 siop_scsidone(sc->sc_nexus, status); 320 } 321 322 if (xs->xs_status & XS_STS_DONE) 323 break; 324 } 325 splx(s); 326 } 327 328 /* 329 * start next command that's ready 330 */ 331 void 332 siop_sched(sc) 333 struct siop_softc *sc; 334 { 335 struct scsipi_periph *periph; 336 struct siop_acb *acb; 337 int i; 338 339 #ifdef DEBUG 340 if (sc->sc_nexus) { 341 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 342 sc->sc_dev.dv_xname, sc->sc_nexus, 343 sc->sc_nexus->xs->xs_periph->periph_target, 344 sc->ready_list.tqh_first, 345 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 346 return; 347 } 348 #endif 349 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 350 periph = acb->xs->xs_periph; 351 i = periph->periph_target; 352 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 353 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 354 355 TAILQ_REMOVE(&sc->ready_list, acb, chain); 356 sc->sc_nexus = acb; 357 periph = acb->xs->xs_periph; 358 ti = &sc->sc_tinfo[periph->periph_target]; 359 ti->lubusy |= (1 << periph->periph_lun); 360 break; 361 } 362 } 363 364 if (acb == NULL) { 365 #ifdef DEBUGXXX 366 printf("%s: siop_sched didn't find ready command\n", 367 sc->sc_dev.dv_xname); 368 #endif 369 return; 370 } 371 372 if (acb->xs->xs_control & XS_CTL_RESET) 373 siopreset(sc); 374 375 #if 0 376 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 377 #endif 378 ++sc->sc_active; 379 siop_select(sc); 380 } 381 382 void 383 siop_scsidone(acb, stat) 384 struct siop_acb *acb; 385 int stat; 386 { 387 struct scsipi_xfer *xs; 388 struct scsipi_periph *periph; 389 struct siop_softc *sc; 390 int dosched = 0; 391 392 if (acb == NULL || (xs = acb->xs) == NULL) { 393 #ifdef DIAGNOSTIC 394 printf("siop_scsidone: NULL acb or scsipi_xfer\n"); 395 #if defined(DEBUG) && defined(DDB) 396 Debugger(); 397 #endif 398 #endif 399 return; 400 } 401 periph = xs->xs_periph; 402 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev; 403 404 xs->status = stat; 405 xs->resid = 0; /* XXXX */ 406 407 if (xs->error == XS_NOERROR) { 408 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 409 xs->error = XS_BUSY; 410 } 411 412 /* 413 * Remove the ACB from whatever queue it's on. We have to do a bit of 414 * a hack to figure out which queue it's on. Note that it is *not* 415 * necessary to cdr down the ready queue, but we must cdr down the 416 * nexus queue and see if it's there, so we can mark the unit as no 417 * longer busy. This code is sickening, but it works. 418 */ 419 if (acb == sc->sc_nexus) { 420 sc->sc_nexus = NULL; 421 sc->sc_tinfo[periph->periph_target].lubusy &= 422 ~(1<<periph->periph_lun); 423 if (sc->ready_list.tqh_first) 424 dosched = 1; /* start next command */ 425 --sc->sc_active; 426 SIOP_TRACE('d','a',stat,0) 427 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 428 TAILQ_REMOVE(&sc->ready_list, acb, chain); 429 SIOP_TRACE('d','r',stat,0) 430 } else { 431 register struct siop_acb *acb2; 432 for (acb2 = sc->nexus_list.tqh_first; acb2; 433 acb2 = acb2->chain.tqe_next) 434 if (acb2 == acb) { 435 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 436 sc->sc_tinfo[periph->periph_target].lubusy 437 &= ~(1<<periph->periph_lun); 438 --sc->sc_active; 439 break; 440 } 441 if (acb2) 442 ; 443 else if (acb->chain.tqe_next) { 444 TAILQ_REMOVE(&sc->ready_list, acb, chain); 445 --sc->sc_active; 446 } else { 447 printf("%s: can't find matching acb\n", 448 sc->sc_dev.dv_xname); 449 #ifdef DDB 450 /* Debugger(); */ 451 #endif 452 } 453 SIOP_TRACE('d','n',stat,0); 454 } 455 /* Put it on the free list. */ 456 acb->flags = ACB_FREE; 457 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 458 459 sc->sc_tinfo[periph->periph_target].cmds++; 460 461 scsipi_done(xs); 462 463 if (dosched && sc->sc_nexus == NULL) 464 siop_sched(sc); 465 } 466 467 void 468 siopabort(sc, rp, where) 469 register struct siop_softc *sc; 470 siop_regmap_p rp; 471 char *where; 472 { 473 #ifdef fix_this 474 int i; 475 #endif 476 477 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 478 sc->sc_dev.dv_xname, 479 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 480 481 if (sc->sc_active > 0) { 482 #ifdef TODO 483 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 484 WAIT_CIP (rp); 485 486 GET_SBIC_asr (rp, asr); 487 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 488 { 489 /* ok, get more drastic.. */ 490 491 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 492 delay(25); 493 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 494 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 495 496 return; 497 } 498 499 do 500 { 501 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 502 GET_SBIC_csr (rp, csr); 503 } 504 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 505 && (csr != SBIC_CSR_CMD_INVALID)); 506 #endif 507 508 /* lets just hope it worked.. */ 509 #ifdef fix_this 510 for (i = 0; i < 2; ++i) { 511 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 512 sc->sc_cur) { 513 printf ("siopabort: cleanup!\n"); 514 sc->sc_iob[i].sc_xs = NULL; 515 } 516 } 517 #endif /* fix_this */ 518 /* sc->sc_active = 0; */ 519 } 520 } 521 522 void 523 siopinitialize(sc) 524 struct siop_softc *sc; 525 { 526 int i; 527 u_int inhibit_sync; 528 extern u_long scsi_nosync; 529 extern int shift_nosync; 530 531 /* 532 * Need to check that scripts is on a long word boundary 533 * Also should verify that dev doesn't span non-contiguous 534 * physical pages. 535 */ 536 sc->sc_scriptspa = kvtop((caddr_t)scripts); 537 538 /* 539 * malloc sc_acb to ensure that DS is on a long word boundary. 540 */ 541 542 MALLOC(sc->sc_acb, struct siop_acb *, 543 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 544 if (sc->sc_acb == NULL) 545 panic("siopinitialize: ACB malloc failed!"); 546 547 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 548 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 549 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 550 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 551 if (sc->sc_minsync < 25) 552 sc->sc_minsync = 25; 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) & 0xff; 569 shift_nosync += 8; 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 < 8; ++i) 576 if (inhibit_sync & (1 << i)) 577 siop_inhibit_sync[i] = 1; 578 } 579 580 siopreset (sc); 581 } 582 583 void 584 siopreset(sc) 585 struct siop_softc *sc; 586 { 587 siop_regmap_p rp; 588 u_int i, s; 589 u_char dummy; 590 struct siop_acb *acb; 591 592 rp = sc->sc_siopp; 593 594 if (sc->sc_flags & SIOP_ALIVE) 595 siopabort(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_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 620 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 621 rp->siop_dcntl = sc->sc_dcntl; 622 rp->siop_dmode = 0x80; /* burst length = 4 */ 623 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 624 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 625 rp->siop_scid = 1 << sc->sc_channel.chan_id; 626 rp->siop_dwt = 0x00; 627 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 628 rp->siop_ctest7 |= sc->sc_ctest7; 629 630 /* will need to re-negotiate sync xfers */ 631 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 632 633 i = rp->siop_istat; 634 if (i & SIOP_ISTAT_SIP) 635 dummy = rp->siop_sstat0; 636 if (i & SIOP_ISTAT_DIP) 637 dummy = rp->siop_dstat; 638 639 splx (s); 640 641 delay (siop_reset_delay * 1000); 642 printf("siop id %d reset V%d\n", sc->sc_channel.chan_id, 643 rp->siop_ctest8 >> 4); 644 645 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 646 TAILQ_INIT(&sc->ready_list); 647 TAILQ_INIT(&sc->nexus_list); 648 TAILQ_INIT(&sc->free_list); 649 sc->sc_nexus = NULL; 650 acb = sc->sc_acb; 651 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 652 for (i = 0; i < SIOP_NACB; i++) { 653 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 654 acb++; 655 } 656 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 657 } else { 658 if (sc->sc_nexus != NULL) { 659 sc->sc_nexus->xs->error = XS_RESET; 660 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 661 } 662 while ((acb = sc->nexus_list.tqh_first) > 0) { 663 acb->xs->error = XS_RESET; 664 siop_scsidone(acb, acb->stat[0]); 665 } 666 } 667 668 sc->sc_flags |= SIOP_ALIVE; 669 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 670 /* enable SCSI and DMA interrupts */ 671 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 672 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 673 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 674 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 675 rp->siop_sien = sc->sc_sien; 676 rp->siop_dien = sc->sc_dien; 677 } 678 679 /* 680 * Setup Data Storage for 53C710 and start SCRIPTS processing 681 */ 682 683 void 684 siop_start (sc, target, lun, cbuf, clen, buf, len) 685 struct siop_softc *sc; 686 int target; 687 int lun; 688 u_char *cbuf; 689 int clen; 690 u_char *buf; 691 int len; 692 { 693 siop_regmap_p rp = sc->sc_siopp; 694 int nchain; 695 int count, tcount; 696 char *addr, *dmaend; 697 struct siop_acb *acb = sc->sc_nexus; 698 #ifdef DEBUG 699 int i; 700 #endif 701 702 #ifdef DEBUG 703 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 704 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 705 rp, &scripts, &acb->ds, sc->sc_active); 706 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 707 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 708 rp->siop_sien, rp->siop_dien); 709 #ifdef DDB 710 /*Debugger();*/ 711 #endif 712 } 713 #endif 714 acb->msgout[0] = MSG_IDENTIFY | lun; 715 if (siop_allow_disc[target] & 2 || 716 (siop_allow_disc[target] && len == 0)) 717 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 718 acb->status = 0; 719 acb->stat[0] = -1; 720 acb->msg[0] = -1; 721 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 722 acb->ds.idlen = 1; 723 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 724 acb->ds.cmdlen = clen; 725 acb->ds.cmdbuf = (char *) kvtop(cbuf); 726 acb->ds.stslen = 1; 727 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 728 acb->ds.msglen = 1; 729 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 730 acb->msg[1] = -1; 731 acb->ds.msginlen = 1; 732 acb->ds.extmsglen = 1; 733 acb->ds.synmsglen = 3; 734 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 735 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 736 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 737 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 738 739 /* 740 * Negotiate wide is the initial negotiation state; since the 53c710 741 * doesn't do wide transfers, just begin the synchronous transfer 742 * negotation here. 743 */ 744 if (sc->sc_sync[target].state == NEG_WIDE) { 745 if (siop_inhibit_sync[target]) { 746 sc->sc_sync[target].state = NEG_DONE; 747 sc->sc_sync[target].sbcl = 0; 748 sc->sc_sync[target].sxfer = 0; 749 #ifdef DEBUG 750 if (siopsync_debug) 751 printf ("Forcing target %d asynchronous\n", target); 752 #endif 753 } 754 else { 755 acb->msg[2] = -1; 756 acb->msgout[1] = MSG_EXT_MESSAGE; 757 acb->msgout[2] = 3; 758 acb->msgout[3] = MSG_SYNC_REQ; 759 #ifdef MAXTOR_SYNC_KLUDGE 760 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 761 #else 762 acb->msgout[4] = sc->sc_minsync; 763 #endif 764 acb->msgout[5] = SIOP_MAX_OFFSET; 765 acb->ds.idlen = 6; 766 sc->sc_sync[target].state = NEG_WAITS; 767 #ifdef DEBUG 768 if (siopsync_debug) 769 printf ("Sending sync request to target %d\n", target); 770 #endif 771 } 772 } 773 774 /* 775 * Build physical DMA addresses for scatter/gather I/O 776 */ 777 acb->iob_buf = buf; 778 acb->iob_len = len; 779 acb->iob_curbuf = acb->iob_curlen = 0; 780 nchain = 0; 781 count = len; 782 addr = buf; 783 dmaend = NULL; 784 while (count > 0) { 785 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 786 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 787 tcount = count; 788 acb->ds.chain[nchain].datalen = tcount; 789 addr += tcount; 790 count -= tcount; 791 if (acb->ds.chain[nchain].databuf == dmaend) { 792 dmaend += acb->ds.chain[nchain].datalen; 793 acb->ds.chain[nchain].datalen = 0; 794 acb->ds.chain[--nchain].datalen += tcount; 795 #ifdef DEBUG 796 ++siopdma_hits; 797 #endif 798 } 799 else { 800 dmaend = acb->ds.chain[nchain].databuf + 801 acb->ds.chain[nchain].datalen; 802 acb->ds.chain[nchain].datalen = tcount; 803 #ifdef DEBUG 804 if (nchain) /* Don't count miss on first one */ 805 ++siopdma_misses; 806 #endif 807 } 808 ++nchain; 809 } 810 #ifdef DEBUG 811 if (nchain != 1 && len != 0 && siop_debug & 3) { 812 printf ("DMA chaining set: %d\n", nchain); 813 for (i = 0; i < nchain; ++i) { 814 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 815 acb->ds.chain[i].datalen); 816 } 817 } 818 #endif 819 820 /* push data cache for all data the 53c710 needs to access */ 821 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 822 dma_cachectl (cbuf, clen); 823 if (buf != NULL && len != 0) 824 dma_cachectl (buf, len); 825 #ifdef DEBUG 826 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 827 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 828 rp, &scripts, &acb->ds, sc->sc_active); 829 #ifdef DDB 830 /*Debugger();*/ 831 #endif 832 } 833 #endif 834 if (sc->nexus_list.tqh_first == NULL) { 835 if (rp->siop_istat & SIOP_ISTAT_CON) 836 printf("%s: siop_select while connected?\n", 837 sc->sc_dev.dv_xname); 838 rp->siop_temp = 0; 839 rp->siop_sbcl = sc->sc_sync[target].sbcl; 840 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 841 rp->siop_dsp = sc->sc_scriptspa; 842 SIOP_TRACE('s',1,0,0) 843 } else { 844 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 845 rp->siop_istat = SIOP_ISTAT_SIGP; 846 SIOP_TRACE('s',2,0,0); 847 } 848 else { 849 SIOP_TRACE('s',3,rp->siop_istat,0); 850 } 851 } 852 #ifdef DEBUG 853 ++siopstarts; 854 #endif 855 } 856 857 /* 858 * Process a DMA or SCSI interrupt from the 53C710 SIOP 859 */ 860 861 int 862 siop_checkintr(sc, istat, dstat, sstat0, status) 863 struct siop_softc *sc; 864 u_char istat; 865 u_char dstat; 866 u_char sstat0; 867 int *status; 868 { 869 siop_regmap_p rp = sc->sc_siopp; 870 struct siop_acb *acb = sc->sc_nexus; 871 int target = 0; 872 int dfifo, dbc, sstat1; 873 874 dfifo = rp->siop_dfifo; 875 dbc = rp->siop_dbc0; 876 sstat1 = rp->siop_sstat1; 877 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 878 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 879 ; 880 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 881 #ifdef DEBUG 882 ++siopints; 883 #if 0 884 if (siop_debug & 0x100) { 885 DCIAS(&acb->stat[0]); /* XXX */ 886 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 887 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 888 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 889 acb->msg[0], acb->msg[1], acb->msg[2], 890 acb->msg[3], acb->msg[4], acb->msg[5]); 891 } 892 #endif 893 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 894 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 895 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 896 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 897 sc->sc_scriptspa + sizeof(scripts)); 898 printf(" istat %x dstat %x sstat0 %x\n", 899 istat, dstat, sstat0); 900 #ifdef DDB 901 Debugger(); 902 #endif 903 } 904 #endif 905 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 906 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 907 /* Normal completion status, or check condition */ 908 #ifdef DEBUG 909 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 910 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 911 kvtop((caddr_t)&acb->ds)); 912 panic("*** siop DSA invalid ***"); 913 } 914 #endif 915 target = acb->xs->xs_periph->periph_target; 916 if (sc->sc_sync[target].state == NEG_WAITS) { 917 if (acb->msg[1] == 0xff) 918 printf ("%s: target %d ignored sync request\n", 919 sc->sc_dev.dv_xname, target); 920 else if (acb->msg[1] == MSG_REJECT) 921 printf ("%s: target %d rejected sync request\n", 922 sc->sc_dev.dv_xname, target); 923 else 924 /* XXX - need to set sync transfer parameters */ 925 printf("%s: target %d (sync) %02x %02x %02x\n", 926 sc->sc_dev.dv_xname, target, acb->msg[1], 927 acb->msg[2], acb->msg[3]); 928 sc->sc_sync[target].state = NEG_DONE; 929 } 930 dma_cachectl(&acb->stat[0], 1); 931 *status = acb->stat[0]; 932 #ifdef DEBUG 933 if (rp->siop_sbcl & SIOP_BSY) { 934 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 935 rp, &scripts, &acb->ds);*/ 936 #ifdef DDB 937 /*Debugger();*/ 938 #endif 939 } 940 if (acb->msg[0] != 0x00) 941 printf("%s: message was not COMMAND COMPLETE: %x\n", 942 sc->sc_dev.dv_xname, acb->msg[0]); 943 #endif 944 if (sc->nexus_list.tqh_first) 945 rp->siop_dcntl |= SIOP_DCNTL_STD; 946 return 1; 947 } 948 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 949 target = acb->xs->xs_periph->periph_target; 950 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 951 acb->msg[3] == MSG_SYNC_REQ) { 952 #ifdef DEBUG 953 if (siopsync_debug) 954 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 955 acb->msg[0], acb->msg[1], acb->msg[2], 956 acb->msg[3], acb->msg[4], acb->msg[5]); 957 #endif 958 sc->sc_sync[target].sxfer = 0; 959 sc->sc_sync[target].sbcl = 0; 960 if (acb->msg[2] == 3 && 961 acb->msg[3] == MSG_SYNC_REQ && 962 acb->msg[5] != 0) { 963 #ifdef MAXTOR_KLUDGE 964 /* 965 * Kludge for my Maxtor XT8580S 966 * It accepts whatever we request, even 967 * though it won't work. So we ask for 968 * a short period than we can handle. If 969 * the device says it can do it, use 208ns. 970 * If the device says it can do less than 971 * 100ns, then we limit it to 100ns. 972 */ 973 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 974 #ifdef DEBUG 975 printf ("%d: target %d wanted %dns period\n", 976 sc->sc_dev.dv_xname, target, 977 acb->msg[4] * 4); 978 #endif 979 if (acb->msg[4] == 50 / 4) 980 acb->msg[4] = 208 / 4; 981 else 982 acb->msg[4] = 100 / 4; 983 } 984 #endif /* MAXTOR_KLUDGE */ 985 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 986 sc->sc_dev.dv_xname, target, 987 acb->msg[4] * 4, acb->msg[5]); 988 scsi_period_to_siop (sc, target); 989 } 990 rp->siop_sxfer = sc->sc_sync[target].sxfer; 991 rp->siop_sbcl = sc->sc_sync[target].sbcl; 992 if (sc->sc_sync[target].state == NEG_WAITS) { 993 sc->sc_sync[target].state = NEG_DONE; 994 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 995 return(0); 996 } 997 rp->siop_dcntl |= SIOP_DCNTL_STD; 998 sc->sc_sync[target].state = NEG_DONE; 999 return (0); 1000 } 1001 /* XXX - not SDTR message */ 1002 } 1003 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 1004 #ifdef DEBUG 1005 ++siopphmm; 1006 if (acb == NULL) 1007 printf("%s: Phase mismatch with no active command?\n", 1008 sc->sc_dev.dv_xname); 1009 #endif 1010 if (acb->iob_len) { 1011 int adjust; 1012 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1013 if (sstat1 & SIOP_SSTAT1_ORF) 1014 ++adjust; 1015 if (sstat1 & SIOP_SSTAT1_OLF) 1016 ++adjust; 1017 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1018 acb->iob_curlen += adjust; 1019 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1020 #ifdef DEBUG 1021 if (siop_debug & 0x100) { 1022 int i; 1023 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1024 acb->iob_curbuf, acb->iob_curlen, dfifo, 1025 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1026 if (acb->ds.chain[1].datalen) { 1027 for (i = 0; acb->ds.chain[i].datalen; ++i) 1028 printf("chain[%d] addr %p len %lx\n", 1029 i, acb->ds.chain[i].databuf, 1030 acb->ds.chain[i].datalen); 1031 } 1032 } 1033 #endif 1034 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1035 } 1036 #ifdef DEBUG 1037 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1038 if (siop_debug & 9) 1039 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1040 rp->siop_sbcl, 1041 rp->siop_dsp - sc->sc_scriptspa, 1042 *((long *)&rp->siop_dcmd)); 1043 #endif 1044 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1045 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1046 rp->siop_sbcl, rp->siop_dsp); 1047 #if defined(DEBUG) && defined(DDB) 1048 /*Debugger(); XXX is*/ 1049 #endif 1050 } 1051 switch (rp->siop_sbcl & 7) { 1052 case 0: /* data out */ 1053 case 1: /* data in */ 1054 case 2: /* status */ 1055 case 3: /* command */ 1056 case 6: /* message in */ 1057 case 7: /* message out */ 1058 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1059 break; 1060 default: 1061 goto bad_phase; 1062 } 1063 return 0; 1064 } 1065 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1066 #ifdef DEBUG 1067 if (acb == NULL) 1068 printf("%s: Select timeout with no active command?\n", 1069 sc->sc_dev.dv_xname); 1070 if (rp->siop_sbcl & SIOP_BSY) { 1071 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1072 rp, &scripts, &acb->ds); 1073 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1074 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1075 if (!(rp->siop_sbcl & SIOP_BSY)) { 1076 printf ("Yikes, it's not busy now!\n"); 1077 #if 0 1078 *status = -1; 1079 if (sc->nexus_list.tqh_first) 1080 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1081 return 1; 1082 #endif 1083 } 1084 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1085 return (0); 1086 #ifdef DDB 1087 Debugger(); 1088 #endif 1089 } 1090 #endif 1091 *status = -1; 1092 acb->xs->error = XS_SELTIMEOUT; 1093 if (sc->nexus_list.tqh_first) 1094 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1095 return 1; 1096 } 1097 if (acb) 1098 target = acb->xs->xs_periph->periph_target; 1099 else 1100 target = 7; 1101 if (sstat0 & SIOP_SSTAT0_UDC) { 1102 #ifdef DEBUG 1103 if (acb == NULL) 1104 printf("%s: Unexpected disconnect with no active command?\n", 1105 sc->sc_dev.dv_xname); 1106 printf ("%s: target %d disconnected unexpectedly\n", 1107 sc->sc_dev.dv_xname, target); 1108 #endif 1109 #if 0 1110 siopabort (sc, rp, "siopchkintr"); 1111 #endif 1112 *status = STS_BUSY; 1113 if (sc->nexus_list.tqh_first) 1114 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1115 return (acb != NULL); 1116 } 1117 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1118 rp->siop_dsps == 0xff02)) { 1119 #ifdef DEBUG 1120 if (siop_debug & 0x100) 1121 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", 1122 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1123 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1124 acb->iob_curbuf, acb->iob_curlen, 1125 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1126 #endif 1127 if (acb == NULL) { 1128 printf("%s: Disconnect with no active command?\n", 1129 sc->sc_dev.dv_xname); 1130 return (0); 1131 } 1132 /* 1133 * XXXX need to update iob_curbuf/iob_curlen to reflect 1134 * current data transferred. If device disconnected in 1135 * the middle of a DMA block, they should already be set 1136 * by the phase change interrupt. If the disconnect 1137 * occurs on a DMA block boundary, we have to figure out 1138 * which DMA block it was. 1139 */ 1140 if (acb->iob_len && rp->siop_temp) { 1141 int n = rp->siop_temp - sc->sc_scriptspa; 1142 1143 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1144 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1145 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1146 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1147 if (n < Ent_datain) 1148 n = (n - Ent_dataout) / 16; 1149 else 1150 n = (n - Ent_datain) / 16; 1151 if (n <= 0 && n > DMAMAXIO) 1152 printf("TEMP invalid %d\n", n); 1153 else { 1154 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1155 acb->iob_curlen = acb->ds.chain[n].datalen; 1156 } 1157 #ifdef DEBUG 1158 if (siop_debug & 0x100) { 1159 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1160 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1161 acb->iob_curlen); 1162 } 1163 #endif 1164 } 1165 /* 1166 * If data transfer was interrupted by disconnect, iob_curbuf 1167 * and iob_curlen should reflect the point of interruption. 1168 * Adjust the DMA chain so that the data transfer begins 1169 * at the appropriate place upon reselection. 1170 * XXX This should only be done on save data pointer message? 1171 */ 1172 if (acb->iob_curlen) { 1173 int i, j; 1174 1175 #ifdef DEBUG 1176 if (siop_debug & 0x100) 1177 printf ("%s: adjusting DMA chain\n", 1178 sc->sc_dev.dv_xname); 1179 if (rp->siop_dsps == 0xff02) 1180 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1181 sc->sc_dev.dv_xname, 1 << target); 1182 #endif 1183 for (i = 0; i < DMAMAXIO; ++i) { 1184 if (acb->ds.chain[i].datalen == 0) 1185 break; 1186 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1187 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1188 acb->ds.chain[i].datalen)) 1189 break; 1190 } 1191 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1192 printf("couldn't find saved data pointer: "); 1193 printf("curbuf %lx curlen %lx i %d\n", 1194 acb->iob_curbuf, acb->iob_curlen, i); 1195 #ifdef DDB 1196 Debugger(); 1197 #endif 1198 } 1199 #ifdef DEBUG 1200 if (siop_debug & 0x100) 1201 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1202 acb->ds.chain[0].databuf, 1203 acb->ds.chain[0].datalen, 1204 acb->iob_curbuf, 1205 acb->iob_curlen); 1206 #endif 1207 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1208 acb->ds.chain[0].datalen = acb->iob_curlen; 1209 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1210 #ifdef DEBUG 1211 if (siop_debug & 0x100) 1212 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1213 acb->ds.chain[j].databuf, 1214 acb->ds.chain[j].datalen, 1215 acb->ds.chain[i].databuf, 1216 acb->ds.chain[i].datalen); 1217 #endif 1218 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1219 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1220 } 1221 if (j < DMAMAXIO) 1222 acb->ds.chain[j].datalen = 0; 1223 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1224 } 1225 ++sc->sc_tinfo[target].dconns; 1226 /* 1227 * add nexus to waiting list 1228 * clear nexus 1229 * try to start another command for another target/lun 1230 */ 1231 acb->status = sc->sc_flags & SIOP_INTSOFF; 1232 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1233 sc->sc_nexus = NULL; /* no current device */ 1234 /* start script to wait for reselect */ 1235 if (sc->sc_nexus == NULL) 1236 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1237 /* XXXX start another command ? */ 1238 if (sc->ready_list.tqh_first) 1239 siop_sched(sc); 1240 return (0); 1241 } 1242 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1243 int reselid = rp->siop_scratch & 0x7f; 1244 int reselun = rp->siop_sfbr & 0x07; 1245 1246 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1247 #ifdef DEBUG 1248 if (siop_debug & 0x100) 1249 printf ("%s: target ID %02x reselected dsps %lx\n", 1250 sc->sc_dev.dv_xname, reselid, 1251 rp->siop_dsps); 1252 if ((rp->siop_sfbr & 0x80) == 0) 1253 printf("%s: Reselect message in was not identify: %x\n", 1254 sc->sc_dev.dv_xname, rp->siop_sfbr); 1255 #endif 1256 if (sc->sc_nexus) { 1257 #ifdef DEBUG 1258 if (siop_debug & 0x100) 1259 printf ("%s: reselect ID %02x w/active\n", 1260 sc->sc_dev.dv_xname, reselid); 1261 #endif 1262 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1263 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1264 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1265 --sc->sc_active; 1266 } 1267 /* 1268 * locate acb of reselecting device 1269 * set sc->sc_nexus to acb 1270 */ 1271 for (acb = sc->nexus_list.tqh_first; acb; 1272 acb = acb->chain.tqe_next) { 1273 if (reselid != (acb->ds.scsi_addr >> 16) || 1274 reselun != (acb->msgout[0] & 0x07)) 1275 continue; 1276 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1277 sc->sc_nexus = acb; 1278 sc->sc_flags |= acb->status; 1279 acb->status = 0; 1280 DCIAS(kvtop(&acb->stat[0])); 1281 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1282 rp->siop_sxfer = 1283 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1284 rp->siop_sbcl = 1285 sc->sc_sync[acb->xs->xs_periph->periph_target].sbcl; 1286 break; 1287 } 1288 if (acb == NULL) { 1289 printf("%s: target ID %02x reselect nexus_list %p\n", 1290 sc->sc_dev.dv_xname, reselid, 1291 sc->nexus_list.tqh_first); 1292 panic("unable to find reselecting device"); 1293 } 1294 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1295 rp->siop_temp = 0; 1296 rp->siop_dcntl |= SIOP_DCNTL_STD; 1297 return (0); 1298 } 1299 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1300 #ifdef DEBUG 1301 u_short ctest2 = rp->siop_ctest2; 1302 1303 /* reselect was interrupted (by Sig_P or select) */ 1304 if (siop_debug & 0x100 || 1305 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1306 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1307 sc->sc_dev.dv_xname, rp->siop_scntl1, 1308 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1309 #endif 1310 /* XXX assumes it was not select */ 1311 if (sc->sc_nexus == NULL) { 1312 #ifdef DEBUG 1313 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1314 sc->sc_dev.dv_xname); 1315 #if 0 1316 siop_dump(sc); 1317 #ifdef DDB 1318 Debugger(); 1319 #endif 1320 #endif 1321 #endif 1322 rp->siop_dcntl |= SIOP_DCNTL_STD; 1323 return(0); 1324 } 1325 target = sc->sc_nexus->xs->xs_periph->periph_target; 1326 rp->siop_temp = 0; 1327 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1328 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1329 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1330 rp->siop_dsp = sc->sc_scriptspa; 1331 return (0); 1332 } 1333 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1334 if (acb == NULL) 1335 printf("%s: Bad message-in with no active command?\n", 1336 sc->sc_dev.dv_xname); 1337 /* Unrecognized message in byte */ 1338 dma_cachectl (&acb->msg[1],1); 1339 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1340 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1341 /* what should be done here? */ 1342 DCIAS(kvtop(&acb->msg[1])); 1343 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1344 return (0); 1345 } 1346 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1347 /* Status phase wasn't followed by message in phase? */ 1348 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1349 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1350 if (rp->siop_sbcl == 0xa7) { 1351 /* It is now, just continue the script? */ 1352 rp->siop_dcntl |= SIOP_DCNTL_STD; 1353 return (0); 1354 } 1355 } 1356 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1357 dma_cachectl (&acb->stat[0], 1); 1358 dma_cachectl (&acb->msg[0], 1); 1359 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1360 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1361 rp->siop_sbcl); 1362 siopreset (sc); 1363 *status = -1; 1364 return 0; /* siopreset has cleaned up */ 1365 } 1366 if (sstat0 & SIOP_SSTAT0_SGE) 1367 printf ("SIOP: SCSI Gross Error\n"); 1368 if (sstat0 & SIOP_SSTAT0_PAR) 1369 printf ("SIOP: Parity Error\n"); 1370 if (dstat & SIOP_DSTAT_IID) 1371 printf ("SIOP: Invalid instruction detected\n"); 1372 bad_phase: 1373 /* 1374 * temporary panic for unhandled conditions 1375 * displays various things about the 53C710 status and registers 1376 * then panics. 1377 * XXXX need to clean this up to print out the info, reset, and continue 1378 */ 1379 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1380 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1381 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1382 *((long *)&rp->siop_dcmd)); 1383 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1384 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1385 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1386 #ifdef DEBUG 1387 if (siop_debug & 0x20) 1388 panic("siopchkintr: **** temp ****"); 1389 #endif 1390 #ifdef DDB 1391 Debugger (); 1392 #endif 1393 siopreset (sc); /* hard reset */ 1394 *status = -1; 1395 return 0; /* siopreset cleaned up */ 1396 } 1397 1398 void 1399 siop_select(sc) 1400 struct siop_softc *sc; 1401 { 1402 siop_regmap_p rp; 1403 struct siop_acb *acb = sc->sc_nexus; 1404 1405 #ifdef DEBUG 1406 if (siop_debug & 1) 1407 printf ("%s: select ", sc->sc_dev.dv_xname); 1408 #endif 1409 1410 rp = sc->sc_siopp; 1411 if (acb->xs->xs_control & XS_CTL_POLL || siop_no_dma) { 1412 sc->sc_flags |= SIOP_INTSOFF; 1413 sc->sc_flags &= ~SIOP_INTDEFER; 1414 if ((rp->siop_istat & 0x08) == 0) { 1415 rp->siop_sien = 0; 1416 rp->siop_dien = 0; 1417 } 1418 #if 0 1419 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1420 sc->sc_flags &= ~SIOP_INTSOFF; 1421 if ((rp->siop_istat & 0x08) == 0) { 1422 rp->siop_sien = sc->sc_sien; 1423 rp->siop_dien = sc->sc_dien; 1424 } 1425 #endif 1426 } 1427 #ifdef DEBUG 1428 if (siop_debug & 1) 1429 printf ("siop_select: target %x cmd %02x ds %p\n", 1430 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1431 &sc->sc_nexus->ds); 1432 #endif 1433 1434 siop_start(sc, acb->xs->xs_periph->periph_target, 1435 acb->xs->xs_periph->periph_lun, 1436 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1437 1438 return; 1439 } 1440 1441 /* 1442 * 53C710 interrupt handler 1443 */ 1444 1445 void 1446 siopintr (sc) 1447 register struct siop_softc *sc; 1448 { 1449 siop_regmap_p rp; 1450 register u_char istat, dstat, sstat0; 1451 int status; 1452 int s = splbio(); 1453 1454 istat = sc->sc_istat; 1455 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1456 splx(s); 1457 return; 1458 } 1459 1460 /* Got a valid interrupt on this device */ 1461 rp = sc->sc_siopp; 1462 dstat = sc->sc_dstat; 1463 sstat0 = sc->sc_sstat0; 1464 if (dstat & SIOP_DSTAT_SIR) 1465 sc->sc_intcode = rp->siop_dsps; 1466 sc->sc_istat = 0; 1467 #ifdef DEBUG 1468 if (siop_debug & 1) 1469 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1470 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1471 if (!sc->sc_active) { 1472 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1473 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1474 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1475 } 1476 #endif 1477 1478 #ifdef DEBUG 1479 if (siop_debug & 5) { 1480 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1481 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1482 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1483 rp->siop_dsps, rp->siop_sbcl, 1484 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1485 } 1486 #endif 1487 if (sc->sc_flags & SIOP_INTDEFER) { 1488 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1489 rp->siop_sien = sc->sc_sien; 1490 rp->siop_dien = sc->sc_dien; 1491 } 1492 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1493 #if 1 1494 if (status == 0xff) 1495 printf ("siopintr: status == 0xff\n"); 1496 #endif 1497 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1498 #if 0 1499 if (rp->siop_sbcl & SIOP_BSY) { 1500 printf ("%s: SCSI bus busy at completion", 1501 sc->sc_dev.dv_xname); 1502 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1503 sc->sc_nexus->xs->xs_periph->periph_target, 1504 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1505 rp->siop_dsp - sc->sc_scriptspa); 1506 } 1507 #endif 1508 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1509 sc->sc_nexus->stat[0] : -1); 1510 } 1511 } 1512 splx(s); 1513 } 1514 1515 /* 1516 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1517 * not be correct for other 53c710 boards. 1518 * 1519 */ 1520 void 1521 scsi_period_to_siop (sc, target) 1522 struct siop_softc *sc; 1523 int target; 1524 { 1525 int period, offset, sxfer, sbcl = 0; 1526 #ifdef DEBUG_SYNC 1527 int i; 1528 #endif 1529 1530 period = sc->sc_nexus->msg[4]; 1531 offset = sc->sc_nexus->msg[5]; 1532 #ifdef DEBUG_SYNC 1533 sxfer = 0; 1534 if (offset <= SIOP_MAX_OFFSET) 1535 sxfer = offset; 1536 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1537 if (period <= sync_tab[i].p) { 1538 sxfer |= sync_tab[i].r & 0x70; 1539 sbcl = sync_tab[i].r & 0x03; 1540 break; 1541 } 1542 } 1543 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1544 #endif 1545 for (sbcl = 1; sbcl < 4; ++sbcl) { 1546 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1547 if (sxfer >= 0 && sxfer <= 7) 1548 break; 1549 } 1550 if (sbcl > 3) { 1551 printf("siop sync: unable to compute sync params for period %dns\n", 1552 period * 4); 1553 /* 1554 * XXX need to pick a value we can do and renegotiate 1555 */ 1556 sxfer = sbcl = 0; 1557 } else { 1558 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1559 offset : SIOP_MAX_OFFSET); 1560 #ifdef DEBUG_SYNC 1561 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1562 period * 4, sxfer, sbcl); 1563 printf(" actual period %dns\n", 1564 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1565 #endif 1566 } 1567 sc->sc_sync[target].sxfer = sxfer; 1568 sc->sc_sync[target].sbcl = sbcl; 1569 #ifdef DEBUG_SYNC 1570 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1571 #endif 1572 } 1573 1574 #ifdef DEBUG 1575 1576 #if SIOP_TRACE_SIZE 1577 void 1578 siop_dump_trace() 1579 { 1580 int i; 1581 1582 printf("siop trace: next index %d\n", siop_trix); 1583 i = siop_trix; 1584 do { 1585 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1586 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1587 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1588 } while (i != siop_trix); 1589 } 1590 #endif 1591 1592 void 1593 siop_dump_acb(acb) 1594 struct siop_acb *acb; 1595 { 1596 u_char *b = (u_char *) &acb->cmd; 1597 int i; 1598 1599 printf("acb@%p ", acb); 1600 if (acb->xs == NULL) { 1601 printf("<unused>\n"); 1602 return; 1603 } 1604 printf("(%d:%d) flags %2x clen %2d cmd ", 1605 acb->xs->xs_periph->periph_target, 1606 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1607 for (i = acb->clen; i; --i) 1608 printf(" %02x", *b++); 1609 printf("\n"); 1610 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1611 acb->xs->datalen); 1612 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1613 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1614 } 1615 1616 void 1617 siop_dump(sc) 1618 struct siop_softc *sc; 1619 { 1620 struct siop_acb *acb; 1621 siop_regmap_p rp = sc->sc_siopp; 1622 int s; 1623 int i; 1624 1625 s = splbio(); 1626 #if SIOP_TRACE_SIZE 1627 siop_dump_trace(); 1628 #endif 1629 printf("%s@%p regs %p istat %x\n", 1630 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1631 if ((acb = sc->free_list.tqh_first) > 0) { 1632 printf("Free list:\n"); 1633 while (acb) { 1634 siop_dump_acb(acb); 1635 acb = acb->chain.tqe_next; 1636 } 1637 } 1638 if ((acb = sc->ready_list.tqh_first) > 0) { 1639 printf("Ready list:\n"); 1640 while (acb) { 1641 siop_dump_acb(acb); 1642 acb = acb->chain.tqe_next; 1643 } 1644 } 1645 if ((acb = sc->nexus_list.tqh_first) > 0) { 1646 printf("Nexus list:\n"); 1647 while (acb) { 1648 siop_dump_acb(acb); 1649 acb = acb->chain.tqe_next; 1650 } 1651 } 1652 if (sc->sc_nexus) { 1653 printf("Nexus:\n"); 1654 siop_dump_acb(sc->sc_nexus); 1655 } 1656 for (i = 0; i < 8; ++i) { 1657 if (sc->sc_tinfo[i].cmds > 2) { 1658 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1659 i, sc->sc_tinfo[i].cmds, 1660 sc->sc_tinfo[i].dconns, 1661 sc->sc_tinfo[i].lubusy); 1662 } 1663 } 1664 splx(s); 1665 } 1666 #endif 1667
Indexes created Wed Sep 24 05:09:52 GMT 2025