siop.c revision 1.45
1 /* $NetBSD: siop.c,v 1.45 2002/01/26 13:41:00 aymeric 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(struct siop_softc *); 76 void siopabort(struct siop_softc *, siop_regmap_p, char *); 77 void sioperror(struct siop_softc *, siop_regmap_p, u_char); 78 void siopstart(struct siop_softc *); 79 int siop_checkintr(struct siop_softc *, u_char, u_char, u_char, int *); 80 void siopreset(struct siop_softc *); 81 void siopsetdelay(int); 82 void siop_scsidone(struct siop_acb *, int); 83 void siop_sched(struct siop_softc *); 84 void siop_poll(struct siop_softc *, struct siop_acb *); 85 void siopintr(struct siop_softc *); 86 void scsi_period_to_siop(struct siop_softc *, int); 87 void siop_start(struct siop_softc *, int, int, u_char *, int, u_char *, int); 88 void siop_dump_acb(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(struct siop_softc *); 168 void siop_dump_trace(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(struct buf *bp) 179 { 180 181 /* 182 * No max transfer at this level. 183 */ 184 minphys(bp); 185 } 186 187 /* 188 * used by specific siop controller 189 * 190 */ 191 void 192 siop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 193 void *arg) 194 { 195 struct scsipi_xfer *xs; 196 struct scsipi_periph *periph; 197 struct siop_acb *acb; 198 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 199 int flags, s; 200 201 switch (req) { 202 case ADAPTER_REQ_RUN_XFER: 203 xs = arg; 204 periph = xs->xs_periph; 205 flags = xs->xs_control; 206 207 /* XXXX ?? */ 208 if (flags & XS_CTL_DATA_UIO) 209 panic("siop: scsi data uio requested"); 210 211 /* XXXX ?? */ 212 if (sc->sc_nexus && flags & XS_CTL_POLL) 213 /* panic("siop_scsicmd: busy");*/ 214 printf("siop_scsicmd: busy\n"); 215 216 s = splbio(); 217 acb = sc->free_list.tqh_first; 218 if (acb) { 219 TAILQ_REMOVE(&sc->free_list, acb, chain); 220 } 221 splx(s); 222 223 #ifdef DIAGNOSTIC 224 /* 225 * This should never happen as we track the resources 226 * in the mid-layer. 227 */ 228 if (acb == NULL) { 229 scsipi_printaddr(periph); 230 printf("unable to allocate acb\n"); 231 panic("siop_scsipi_request"); 232 } 233 #endif 234 235 acb->flags = ACB_ACTIVE; 236 acb->xs = xs; 237 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 238 acb->clen = xs->cmdlen; 239 acb->daddr = xs->data; 240 acb->dleft = xs->datalen; 241 242 s = splbio(); 243 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 244 245 if (sc->sc_nexus == NULL) 246 siop_sched(sc); 247 248 splx(s); 249 250 if (flags & XS_CTL_POLL || siop_no_dma) 251 siop_poll(sc, acb); 252 return; 253 254 case ADAPTER_REQ_GROW_RESOURCES: 255 return; 256 257 case ADAPTER_REQ_SET_XFER_MODE: 258 return; 259 } 260 } 261 262 void 263 siop_poll(struct siop_softc *sc, struct siop_acb *acb) 264 { 265 siop_regmap_p rp = sc->sc_siopp; 266 struct scsipi_xfer *xs = acb->xs; 267 int i; 268 int status; 269 u_char istat; 270 u_char dstat; 271 u_char sstat0; 272 int s; 273 int to; 274 275 s = splbio(); 276 to = xs->timeout / 1000; 277 if (sc->nexus_list.tqh_first) 278 printf("%s: siop_poll called with disconnected device\n", 279 sc->sc_dev.dv_xname); 280 for (;;) { 281 /* use cmd_wait values? */ 282 i = 50000; 283 /* XXX spl0(); */ 284 while (((istat = rp->siop_istat) & 285 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 286 if (--i <= 0) { 287 #ifdef DEBUG 288 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 289 xs->xs_periph->periph_target, acb->cmd.opcode, 290 rp->siop_sbcl, rp->siop_dsp, 291 rp->siop_dsp - sc->sc_scriptspa, 292 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 293 #endif 294 i = 50000; 295 --to; 296 if (to <= 0) { 297 siopreset(sc); 298 return; 299 } 300 } 301 delay(20); 302 } 303 sstat0 = rp->siop_sstat0; 304 dstat = rp->siop_dstat; 305 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 306 if (acb != sc->sc_nexus) 307 printf("%s: siop_poll disconnected device completed\n", 308 sc->sc_dev.dv_xname); 309 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 310 sc->sc_flags &= ~SIOP_INTSOFF; 311 rp->siop_sien = sc->sc_sien; 312 rp->siop_dien = sc->sc_dien; 313 } 314 siop_scsidone(sc->sc_nexus, status); 315 } 316 317 if (xs->xs_status & XS_STS_DONE) 318 break; 319 } 320 splx(s); 321 } 322 323 /* 324 * start next command that's ready 325 */ 326 void 327 siop_sched(struct siop_softc *sc) 328 { 329 struct scsipi_periph *periph; 330 struct siop_acb *acb; 331 int i; 332 333 #ifdef DEBUG 334 if (sc->sc_nexus) { 335 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 336 sc->sc_dev.dv_xname, sc->sc_nexus, 337 sc->sc_nexus->xs->xs_periph->periph_target, 338 sc->ready_list.tqh_first, 339 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 340 return; 341 } 342 #endif 343 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 344 periph = acb->xs->xs_periph; 345 i = periph->periph_target; 346 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 347 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 348 349 TAILQ_REMOVE(&sc->ready_list, acb, chain); 350 sc->sc_nexus = acb; 351 periph = acb->xs->xs_periph; 352 ti = &sc->sc_tinfo[periph->periph_target]; 353 ti->lubusy |= (1 << periph->periph_lun); 354 break; 355 } 356 } 357 358 if (acb == NULL) { 359 #ifdef DEBUGXXX 360 printf("%s: siop_sched didn't find ready command\n", 361 sc->sc_dev.dv_xname); 362 #endif 363 return; 364 } 365 366 if (acb->xs->xs_control & XS_CTL_RESET) 367 siopreset(sc); 368 369 #if 0 370 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 371 #endif 372 ++sc->sc_active; 373 siop_select(sc); 374 } 375 376 void 377 siop_scsidone(struct siop_acb *acb, int stat) 378 { 379 struct scsipi_xfer *xs; 380 struct scsipi_periph *periph; 381 struct siop_softc *sc; 382 int dosched = 0; 383 384 if (acb == NULL || (xs = acb->xs) == NULL) { 385 #ifdef DIAGNOSTIC 386 printf("siop_scsidone: NULL acb or scsipi_xfer\n"); 387 #if defined(DEBUG) && defined(DDB) 388 Debugger(); 389 #endif 390 #endif 391 return; 392 } 393 periph = xs->xs_periph; 394 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev; 395 396 xs->status = stat; 397 xs->resid = 0; /* XXXX */ 398 399 if (xs->error == XS_NOERROR) { 400 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 401 xs->error = XS_BUSY; 402 } 403 404 /* 405 * Remove the ACB from whatever queue it's on. We have to do a bit of 406 * a hack to figure out which queue it's on. Note that it is *not* 407 * necessary to cdr down the ready queue, but we must cdr down the 408 * nexus queue and see if it's there, so we can mark the unit as no 409 * longer busy. This code is sickening, but it works. 410 */ 411 if (acb == sc->sc_nexus) { 412 sc->sc_nexus = NULL; 413 sc->sc_tinfo[periph->periph_target].lubusy &= 414 ~(1<<periph->periph_lun); 415 if (sc->ready_list.tqh_first) 416 dosched = 1; /* start next command */ 417 --sc->sc_active; 418 SIOP_TRACE('d','a',stat,0) 419 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 420 TAILQ_REMOVE(&sc->ready_list, acb, chain); 421 SIOP_TRACE('d','r',stat,0) 422 } else { 423 register struct siop_acb *acb2; 424 for (acb2 = sc->nexus_list.tqh_first; acb2; 425 acb2 = acb2->chain.tqe_next) 426 if (acb2 == acb) { 427 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 428 sc->sc_tinfo[periph->periph_target].lubusy 429 &= ~(1<<periph->periph_lun); 430 --sc->sc_active; 431 break; 432 } 433 if (acb2) 434 ; 435 else if (acb->chain.tqe_next) { 436 TAILQ_REMOVE(&sc->ready_list, acb, chain); 437 --sc->sc_active; 438 } else { 439 printf("%s: can't find matching acb\n", 440 sc->sc_dev.dv_xname); 441 #ifdef DDB 442 /* Debugger(); */ 443 #endif 444 } 445 SIOP_TRACE('d','n',stat,0); 446 } 447 /* Put it on the free list. */ 448 acb->flags = ACB_FREE; 449 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 450 451 sc->sc_tinfo[periph->periph_target].cmds++; 452 453 scsipi_done(xs); 454 455 if (dosched && sc->sc_nexus == NULL) 456 siop_sched(sc); 457 } 458 459 void 460 siopabort(register struct siop_softc *sc, siop_regmap_p rp, char *where) 461 { 462 #ifdef fix_this 463 int i; 464 #endif 465 466 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 467 sc->sc_dev.dv_xname, 468 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 469 470 if (sc->sc_active > 0) { 471 #ifdef TODO 472 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 473 WAIT_CIP (rp); 474 475 GET_SBIC_asr (rp, asr); 476 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 477 { 478 /* ok, get more drastic.. */ 479 480 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 481 delay(25); 482 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 483 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 484 485 return; 486 } 487 488 do 489 { 490 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 491 GET_SBIC_csr (rp, csr); 492 } 493 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 494 && (csr != SBIC_CSR_CMD_INVALID)); 495 #endif 496 497 /* lets just hope it worked.. */ 498 #ifdef fix_this 499 for (i = 0; i < 2; ++i) { 500 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 501 sc->sc_cur) { 502 printf ("siopabort: cleanup!\n"); 503 sc->sc_iob[i].sc_xs = NULL; 504 } 505 } 506 #endif /* fix_this */ 507 /* sc->sc_active = 0; */ 508 } 509 } 510 511 void 512 siopinitialize(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)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("siopinitialize: 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 if (sc->sc_clock_freq <= 25) { 542 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 543 sc->sc_tcp[0] = sc->sc_tcp[1]; 544 } else if (sc->sc_clock_freq <= 37) { 545 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 546 sc->sc_tcp[0] = sc->sc_tcp[2]; 547 } else if (sc->sc_clock_freq <= 50) { 548 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 549 sc->sc_tcp[0] = sc->sc_tcp[3]; 550 } else { 551 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 552 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 553 } 554 555 if (scsi_nosync) { 556 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 557 shift_nosync += 8; 558 #ifdef DEBUG 559 if (inhibit_sync) 560 printf("%s: Inhibiting synchronous transfer %02x\n", 561 sc->sc_dev.dv_xname, inhibit_sync); 562 #endif 563 for (i = 0; i < 8; ++i) 564 if (inhibit_sync & (1 << i)) 565 siop_inhibit_sync[i] = 1; 566 } 567 568 siopreset (sc); 569 } 570 571 void 572 siopreset(struct siop_softc *sc) 573 { 574 siop_regmap_p rp; 575 u_int i, s; 576 u_char dummy; 577 struct siop_acb *acb; 578 579 rp = sc->sc_siopp; 580 581 if (sc->sc_flags & SIOP_ALIVE) 582 siopabort(sc, rp, "reset"); 583 584 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 585 586 s = splbio(); 587 588 /* 589 * Reset the chip 590 * XXX - is this really needed? 591 */ 592 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 593 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 594 rp->siop_istat &= ~SIOP_ISTAT_RST; 595 /* 596 * Reset SCSI bus (do we really want this?) 597 */ 598 rp->siop_sien = 0; 599 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 600 delay(1); 601 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 602 603 /* 604 * Set up various chip parameters 605 */ 606 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 607 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 608 rp->siop_dcntl = sc->sc_dcntl; 609 rp->siop_dmode = 0x80; /* burst length = 4 */ 610 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 611 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 612 rp->siop_scid = 1 << sc->sc_channel.chan_id; 613 rp->siop_dwt = 0x00; 614 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 615 rp->siop_ctest7 |= sc->sc_ctest7; 616 617 /* will need to re-negotiate sync xfers */ 618 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 619 620 i = rp->siop_istat; 621 if (i & SIOP_ISTAT_SIP) 622 dummy = rp->siop_sstat0; 623 if (i & SIOP_ISTAT_DIP) 624 dummy = rp->siop_dstat; 625 626 splx (s); 627 628 delay (siop_reset_delay * 1000); 629 printf("siop id %d reset V%d\n", sc->sc_channel.chan_id, 630 rp->siop_ctest8 >> 4); 631 632 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 633 TAILQ_INIT(&sc->ready_list); 634 TAILQ_INIT(&sc->nexus_list); 635 TAILQ_INIT(&sc->free_list); 636 sc->sc_nexus = NULL; 637 acb = sc->sc_acb; 638 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 639 for (i = 0; i < SIOP_NACB; i++) { 640 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 641 acb++; 642 } 643 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 644 } else { 645 if (sc->sc_nexus != NULL) { 646 sc->sc_nexus->xs->error = XS_RESET; 647 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 648 } 649 while ((acb = sc->nexus_list.tqh_first) > 0) { 650 acb->xs->error = XS_RESET; 651 siop_scsidone(acb, acb->stat[0]); 652 } 653 } 654 655 sc->sc_flags |= SIOP_ALIVE; 656 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 657 /* enable SCSI and DMA interrupts */ 658 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 659 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 660 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 661 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 662 rp->siop_sien = sc->sc_sien; 663 rp->siop_dien = sc->sc_dien; 664 } 665 666 /* 667 * Setup Data Storage for 53C710 and start SCRIPTS processing 668 */ 669 670 void 671 siop_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, int clen, 672 u_char *buf, int len) 673 { 674 siop_regmap_p rp = sc->sc_siopp; 675 int nchain; 676 int count, tcount; 677 char *addr, *dmaend; 678 struct siop_acb *acb = sc->sc_nexus; 679 #ifdef DEBUG 680 int i; 681 #endif 682 683 #ifdef DEBUG 684 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 685 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 686 rp, &scripts, &acb->ds, sc->sc_active); 687 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 688 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 689 rp->siop_sien, rp->siop_dien); 690 #ifdef DDB 691 /*Debugger();*/ 692 #endif 693 } 694 #endif 695 acb->msgout[0] = MSG_IDENTIFY | lun; 696 if (siop_allow_disc[target] & 2 || 697 (siop_allow_disc[target] && len == 0)) 698 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 699 acb->status = 0; 700 acb->stat[0] = -1; 701 acb->msg[0] = -1; 702 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 703 acb->ds.idlen = 1; 704 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 705 acb->ds.cmdlen = clen; 706 acb->ds.cmdbuf = (char *) kvtop(cbuf); 707 acb->ds.stslen = 1; 708 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 709 acb->ds.msglen = 1; 710 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 711 acb->msg[1] = -1; 712 acb->ds.msginlen = 1; 713 acb->ds.extmsglen = 1; 714 acb->ds.synmsglen = 3; 715 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 716 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 717 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 718 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 719 720 /* 721 * Negotiate wide is the initial negotiation state; since the 53c710 722 * doesn't do wide transfers, just begin the synchronous transfer 723 * negotation here. 724 */ 725 if (sc->sc_sync[target].state == NEG_WIDE) { 726 if (siop_inhibit_sync[target]) { 727 sc->sc_sync[target].state = NEG_DONE; 728 sc->sc_sync[target].sbcl = 0; 729 sc->sc_sync[target].sxfer = 0; 730 #ifdef DEBUG 731 if (siopsync_debug) 732 printf ("Forcing target %d asynchronous\n", target); 733 #endif 734 } 735 else { 736 acb->msg[2] = -1; 737 acb->msgout[1] = MSG_EXT_MESSAGE; 738 acb->msgout[2] = 3; 739 acb->msgout[3] = MSG_SYNC_REQ; 740 #ifdef MAXTOR_SYNC_KLUDGE 741 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 742 #else 743 acb->msgout[4] = sc->sc_minsync; 744 #endif 745 acb->msgout[5] = SIOP_MAX_OFFSET; 746 acb->ds.idlen = 6; 747 sc->sc_sync[target].state = NEG_WAITS; 748 #ifdef DEBUG 749 if (siopsync_debug) 750 printf ("Sending sync request to target %d\n", target); 751 #endif 752 } 753 } 754 755 /* 756 * Build physical DMA addresses for scatter/gather I/O 757 */ 758 acb->iob_buf = buf; 759 acb->iob_len = len; 760 acb->iob_curbuf = acb->iob_curlen = 0; 761 nchain = 0; 762 count = len; 763 addr = buf; 764 dmaend = NULL; 765 while (count > 0) { 766 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 767 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 768 tcount = count; 769 acb->ds.chain[nchain].datalen = tcount; 770 addr += tcount; 771 count -= tcount; 772 if (acb->ds.chain[nchain].databuf == dmaend) { 773 dmaend += acb->ds.chain[nchain].datalen; 774 acb->ds.chain[nchain].datalen = 0; 775 acb->ds.chain[--nchain].datalen += tcount; 776 #ifdef DEBUG 777 ++siopdma_hits; 778 #endif 779 } 780 else { 781 dmaend = acb->ds.chain[nchain].databuf + 782 acb->ds.chain[nchain].datalen; 783 acb->ds.chain[nchain].datalen = tcount; 784 #ifdef DEBUG 785 if (nchain) /* Don't count miss on first one */ 786 ++siopdma_misses; 787 #endif 788 } 789 ++nchain; 790 } 791 #ifdef DEBUG 792 if (nchain != 1 && len != 0 && siop_debug & 3) { 793 printf ("DMA chaining set: %d\n", nchain); 794 for (i = 0; i < nchain; ++i) { 795 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 796 acb->ds.chain[i].datalen); 797 } 798 } 799 #endif 800 801 /* push data cache for all data the 53c710 needs to access */ 802 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 803 dma_cachectl (cbuf, clen); 804 if (buf != NULL && len != 0) 805 dma_cachectl (buf, len); 806 #ifdef DEBUG 807 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 808 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 809 rp, &scripts, &acb->ds, sc->sc_active); 810 #ifdef DDB 811 /*Debugger();*/ 812 #endif 813 } 814 #endif 815 if (sc->nexus_list.tqh_first == NULL) { 816 if (rp->siop_istat & SIOP_ISTAT_CON) 817 printf("%s: siop_select while connected?\n", 818 sc->sc_dev.dv_xname); 819 rp->siop_temp = 0; 820 rp->siop_sbcl = sc->sc_sync[target].sbcl; 821 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 822 rp->siop_dsp = sc->sc_scriptspa; 823 SIOP_TRACE('s',1,0,0) 824 } else { 825 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 826 rp->siop_istat = SIOP_ISTAT_SIGP; 827 SIOP_TRACE('s',2,0,0); 828 } 829 else { 830 SIOP_TRACE('s',3,rp->siop_istat,0); 831 } 832 } 833 #ifdef DEBUG 834 ++siopstarts; 835 #endif 836 } 837 838 /* 839 * Process a DMA or SCSI interrupt from the 53C710 SIOP 840 */ 841 842 int 843 siop_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 844 u_char sstat0, int *status) 845 { 846 siop_regmap_p rp = sc->sc_siopp; 847 struct siop_acb *acb = sc->sc_nexus; 848 int target = 0; 849 int dfifo, dbc, sstat1; 850 851 dfifo = rp->siop_dfifo; 852 dbc = rp->siop_dbc0; 853 sstat1 = rp->siop_sstat1; 854 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 855 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 856 ; 857 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 858 #ifdef DEBUG 859 ++siopints; 860 #if 0 861 if (siop_debug & 0x100) { 862 DCIAS(&acb->stat[0]); /* XXX */ 863 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 864 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 865 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 866 acb->msg[0], acb->msg[1], acb->msg[2], 867 acb->msg[3], acb->msg[4], acb->msg[5]); 868 } 869 #endif 870 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 871 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 872 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 873 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 874 sc->sc_scriptspa + sizeof(scripts)); 875 printf(" istat %x dstat %x sstat0 %x\n", 876 istat, dstat, sstat0); 877 #ifdef DDB 878 Debugger(); 879 #endif 880 } 881 #endif 882 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 883 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 884 /* Normal completion status, or check condition */ 885 #ifdef DEBUG 886 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 887 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 888 kvtop((caddr_t)&acb->ds)); 889 panic("*** siop DSA invalid ***"); 890 } 891 #endif 892 target = acb->xs->xs_periph->periph_target; 893 if (sc->sc_sync[target].state == NEG_WAITS) { 894 if (acb->msg[1] == 0xff) 895 printf ("%s: target %d ignored sync request\n", 896 sc->sc_dev.dv_xname, target); 897 else if (acb->msg[1] == MSG_REJECT) 898 printf ("%s: target %d rejected sync request\n", 899 sc->sc_dev.dv_xname, target); 900 else 901 /* XXX - need to set sync transfer parameters */ 902 printf("%s: target %d (sync) %02x %02x %02x\n", 903 sc->sc_dev.dv_xname, target, acb->msg[1], 904 acb->msg[2], acb->msg[3]); 905 sc->sc_sync[target].state = NEG_DONE; 906 } 907 dma_cachectl(&acb->stat[0], 1); 908 *status = acb->stat[0]; 909 #ifdef DEBUG 910 if (rp->siop_sbcl & SIOP_BSY) { 911 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 912 rp, &scripts, &acb->ds);*/ 913 #ifdef DDB 914 /*Debugger();*/ 915 #endif 916 } 917 if (acb->msg[0] != 0x00) 918 printf("%s: message was not COMMAND COMPLETE: %x\n", 919 sc->sc_dev.dv_xname, acb->msg[0]); 920 #endif 921 if (sc->nexus_list.tqh_first) 922 rp->siop_dcntl |= SIOP_DCNTL_STD; 923 return 1; 924 } 925 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 926 target = acb->xs->xs_periph->periph_target; 927 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 928 acb->msg[3] == MSG_SYNC_REQ) { 929 #ifdef DEBUG 930 if (siopsync_debug) 931 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 932 acb->msg[0], acb->msg[1], acb->msg[2], 933 acb->msg[3], acb->msg[4], acb->msg[5]); 934 #endif 935 sc->sc_sync[target].sxfer = 0; 936 sc->sc_sync[target].sbcl = 0; 937 if (acb->msg[2] == 3 && 938 acb->msg[3] == MSG_SYNC_REQ && 939 acb->msg[5] != 0) { 940 #ifdef MAXTOR_KLUDGE 941 /* 942 * Kludge for my Maxtor XT8580S 943 * It accepts whatever we request, even 944 * though it won't work. So we ask for 945 * a short period than we can handle. If 946 * the device says it can do it, use 208ns. 947 * If the device says it can do less than 948 * 100ns, then we limit it to 100ns. 949 */ 950 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 951 #ifdef DEBUG 952 printf ("%d: target %d wanted %dns period\n", 953 sc->sc_dev.dv_xname, target, 954 acb->msg[4] * 4); 955 #endif 956 if (acb->msg[4] == 50 / 4) 957 acb->msg[4] = 208 / 4; 958 else 959 acb->msg[4] = 100 / 4; 960 } 961 #endif /* MAXTOR_KLUDGE */ 962 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 963 sc->sc_dev.dv_xname, target, 964 acb->msg[4] * 4, acb->msg[5]); 965 scsi_period_to_siop (sc, target); 966 } 967 rp->siop_sxfer = sc->sc_sync[target].sxfer; 968 rp->siop_sbcl = sc->sc_sync[target].sbcl; 969 if (sc->sc_sync[target].state == NEG_WAITS) { 970 sc->sc_sync[target].state = NEG_DONE; 971 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 972 return(0); 973 } 974 rp->siop_dcntl |= SIOP_DCNTL_STD; 975 sc->sc_sync[target].state = NEG_DONE; 976 return (0); 977 } 978 /* XXX - not SDTR message */ 979 } 980 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 981 #ifdef DEBUG 982 ++siopphmm; 983 if (acb == NULL) 984 printf("%s: Phase mismatch with no active command?\n", 985 sc->sc_dev.dv_xname); 986 #endif 987 if (acb->iob_len) { 988 int adjust; 989 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 990 if (sstat1 & SIOP_SSTAT1_ORF) 991 ++adjust; 992 if (sstat1 & SIOP_SSTAT1_OLF) 993 ++adjust; 994 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 995 acb->iob_curlen += adjust; 996 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 997 #ifdef DEBUG 998 if (siop_debug & 0x100) { 999 int i; 1000 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1001 acb->iob_curbuf, acb->iob_curlen, dfifo, 1002 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1003 if (acb->ds.chain[1].datalen) { 1004 for (i = 0; acb->ds.chain[i].datalen; ++i) 1005 printf("chain[%d] addr %p len %lx\n", 1006 i, acb->ds.chain[i].databuf, 1007 acb->ds.chain[i].datalen); 1008 } 1009 } 1010 #endif 1011 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1012 } 1013 #ifdef DEBUG 1014 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1015 if (siop_debug & 9) 1016 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1017 rp->siop_sbcl, 1018 rp->siop_dsp - sc->sc_scriptspa, 1019 *((long *)&rp->siop_dcmd)); 1020 #endif 1021 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1022 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1023 rp->siop_sbcl, rp->siop_dsp); 1024 #if defined(DEBUG) && defined(DDB) 1025 /*Debugger(); XXX is*/ 1026 #endif 1027 } 1028 switch (rp->siop_sbcl & 7) { 1029 case 0: /* data out */ 1030 case 1: /* data in */ 1031 case 2: /* status */ 1032 case 3: /* command */ 1033 case 6: /* message in */ 1034 case 7: /* message out */ 1035 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1036 break; 1037 default: 1038 goto bad_phase; 1039 } 1040 return 0; 1041 } 1042 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1043 #ifdef DEBUG 1044 if (acb == NULL) 1045 printf("%s: Select timeout with no active command?\n", 1046 sc->sc_dev.dv_xname); 1047 if (rp->siop_sbcl & SIOP_BSY) { 1048 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1049 rp, &scripts, &acb->ds); 1050 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1051 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1052 if (!(rp->siop_sbcl & SIOP_BSY)) { 1053 printf ("Yikes, it's not busy now!\n"); 1054 #if 0 1055 *status = -1; 1056 if (sc->nexus_list.tqh_first) 1057 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1058 return 1; 1059 #endif 1060 } 1061 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1062 return (0); 1063 #ifdef DDB 1064 Debugger(); 1065 #endif 1066 } 1067 #endif 1068 *status = -1; 1069 acb->xs->error = XS_SELTIMEOUT; 1070 if (sc->nexus_list.tqh_first) 1071 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1072 return 1; 1073 } 1074 if (acb) 1075 target = acb->xs->xs_periph->periph_target; 1076 else 1077 target = 7; 1078 if (sstat0 & SIOP_SSTAT0_UDC) { 1079 #ifdef DEBUG 1080 if (acb == NULL) 1081 printf("%s: Unexpected disconnect with no active command?\n", 1082 sc->sc_dev.dv_xname); 1083 printf ("%s: target %d disconnected unexpectedly\n", 1084 sc->sc_dev.dv_xname, target); 1085 #endif 1086 #if 0 1087 siopabort (sc, rp, "siopchkintr"); 1088 #endif 1089 *status = STS_BUSY; 1090 if (sc->nexus_list.tqh_first) 1091 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1092 return (acb != NULL); 1093 } 1094 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1095 rp->siop_dsps == 0xff02)) { 1096 #ifdef DEBUG 1097 if (siop_debug & 0x100) 1098 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", 1099 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1100 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1101 acb->iob_curbuf, acb->iob_curlen, 1102 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1103 #endif 1104 if (acb == NULL) { 1105 printf("%s: Disconnect with no active command?\n", 1106 sc->sc_dev.dv_xname); 1107 return (0); 1108 } 1109 /* 1110 * XXXX need to update iob_curbuf/iob_curlen to reflect 1111 * current data transferred. If device disconnected in 1112 * the middle of a DMA block, they should already be set 1113 * by the phase change interrupt. If the disconnect 1114 * occurs on a DMA block boundary, we have to figure out 1115 * which DMA block it was. 1116 */ 1117 if (acb->iob_len && rp->siop_temp) { 1118 int n = rp->siop_temp - sc->sc_scriptspa; 1119 1120 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1121 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1122 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1123 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1124 if (n < Ent_datain) 1125 n = (n - Ent_dataout) / 16; 1126 else 1127 n = (n - Ent_datain) / 16; 1128 if (n <= 0 && n > DMAMAXIO) 1129 printf("TEMP invalid %d\n", n); 1130 else { 1131 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1132 acb->iob_curlen = acb->ds.chain[n].datalen; 1133 } 1134 #ifdef DEBUG 1135 if (siop_debug & 0x100) { 1136 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1137 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1138 acb->iob_curlen); 1139 } 1140 #endif 1141 } 1142 /* 1143 * If data transfer was interrupted by disconnect, iob_curbuf 1144 * and iob_curlen should reflect the point of interruption. 1145 * Adjust the DMA chain so that the data transfer begins 1146 * at the appropriate place upon reselection. 1147 * XXX This should only be done on save data pointer message? 1148 */ 1149 if (acb->iob_curlen) { 1150 int i, j; 1151 1152 #ifdef DEBUG 1153 if (siop_debug & 0x100) 1154 printf ("%s: adjusting DMA chain\n", 1155 sc->sc_dev.dv_xname); 1156 if (rp->siop_dsps == 0xff02) 1157 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1158 sc->sc_dev.dv_xname, 1 << target); 1159 #endif 1160 for (i = 0; i < DMAMAXIO; ++i) { 1161 if (acb->ds.chain[i].datalen == 0) 1162 break; 1163 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1164 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1165 acb->ds.chain[i].datalen)) 1166 break; 1167 } 1168 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1169 printf("couldn't find saved data pointer: "); 1170 printf("curbuf %lx curlen %lx i %d\n", 1171 acb->iob_curbuf, acb->iob_curlen, i); 1172 #ifdef DDB 1173 Debugger(); 1174 #endif 1175 } 1176 #ifdef DEBUG 1177 if (siop_debug & 0x100) 1178 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1179 acb->ds.chain[0].databuf, 1180 acb->ds.chain[0].datalen, 1181 acb->iob_curbuf, 1182 acb->iob_curlen); 1183 #endif 1184 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1185 acb->ds.chain[0].datalen = acb->iob_curlen; 1186 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1187 #ifdef DEBUG 1188 if (siop_debug & 0x100) 1189 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1190 acb->ds.chain[j].databuf, 1191 acb->ds.chain[j].datalen, 1192 acb->ds.chain[i].databuf, 1193 acb->ds.chain[i].datalen); 1194 #endif 1195 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1196 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1197 } 1198 if (j < DMAMAXIO) 1199 acb->ds.chain[j].datalen = 0; 1200 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1201 } 1202 ++sc->sc_tinfo[target].dconns; 1203 /* 1204 * add nexus to waiting list 1205 * clear nexus 1206 * try to start another command for another target/lun 1207 */ 1208 acb->status = sc->sc_flags & SIOP_INTSOFF; 1209 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1210 sc->sc_nexus = NULL; /* no current device */ 1211 /* start script to wait for reselect */ 1212 if (sc->sc_nexus == NULL) 1213 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1214 /* XXXX start another command ? */ 1215 if (sc->ready_list.tqh_first) 1216 siop_sched(sc); 1217 return (0); 1218 } 1219 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1220 int reselid = rp->siop_scratch & 0x7f; 1221 int reselun = rp->siop_sfbr & 0x07; 1222 1223 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1224 #ifdef DEBUG 1225 if (siop_debug & 0x100) 1226 printf ("%s: target ID %02x reselected dsps %lx\n", 1227 sc->sc_dev.dv_xname, reselid, 1228 rp->siop_dsps); 1229 if ((rp->siop_sfbr & 0x80) == 0) 1230 printf("%s: Reselect message in was not identify: %x\n", 1231 sc->sc_dev.dv_xname, rp->siop_sfbr); 1232 #endif 1233 if (sc->sc_nexus) { 1234 #ifdef DEBUG 1235 if (siop_debug & 0x100) 1236 printf ("%s: reselect ID %02x w/active\n", 1237 sc->sc_dev.dv_xname, reselid); 1238 #endif 1239 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1240 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1241 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1242 --sc->sc_active; 1243 } 1244 /* 1245 * locate acb of reselecting device 1246 * set sc->sc_nexus to acb 1247 */ 1248 for (acb = sc->nexus_list.tqh_first; acb; 1249 acb = acb->chain.tqe_next) { 1250 if (reselid != (acb->ds.scsi_addr >> 16) || 1251 reselun != (acb->msgout[0] & 0x07)) 1252 continue; 1253 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1254 sc->sc_nexus = acb; 1255 sc->sc_flags |= acb->status; 1256 acb->status = 0; 1257 DCIAS(kvtop(&acb->stat[0])); 1258 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1259 rp->siop_sxfer = 1260 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1261 rp->siop_sbcl = 1262 sc->sc_sync[acb->xs->xs_periph->periph_target].sbcl; 1263 break; 1264 } 1265 if (acb == NULL) { 1266 printf("%s: target ID %02x reselect nexus_list %p\n", 1267 sc->sc_dev.dv_xname, reselid, 1268 sc->nexus_list.tqh_first); 1269 panic("unable to find reselecting device"); 1270 } 1271 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1272 rp->siop_temp = 0; 1273 rp->siop_dcntl |= SIOP_DCNTL_STD; 1274 return (0); 1275 } 1276 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1277 #ifdef DEBUG 1278 u_short ctest2 = rp->siop_ctest2; 1279 1280 /* reselect was interrupted (by Sig_P or select) */ 1281 if (siop_debug & 0x100 || 1282 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1283 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1284 sc->sc_dev.dv_xname, rp->siop_scntl1, 1285 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1286 #endif 1287 /* XXX assumes it was not select */ 1288 if (sc->sc_nexus == NULL) { 1289 #ifdef DEBUG 1290 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1291 sc->sc_dev.dv_xname); 1292 #if 0 1293 siop_dump(sc); 1294 #ifdef DDB 1295 Debugger(); 1296 #endif 1297 #endif 1298 #endif 1299 rp->siop_dcntl |= SIOP_DCNTL_STD; 1300 return(0); 1301 } 1302 target = sc->sc_nexus->xs->xs_periph->periph_target; 1303 rp->siop_temp = 0; 1304 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1305 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1306 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1307 rp->siop_dsp = sc->sc_scriptspa; 1308 return (0); 1309 } 1310 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1311 if (acb == NULL) 1312 printf("%s: Bad message-in with no active command?\n", 1313 sc->sc_dev.dv_xname); 1314 /* Unrecognized message in byte */ 1315 dma_cachectl (&acb->msg[1],1); 1316 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1317 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1318 /* what should be done here? */ 1319 DCIAS(kvtop(&acb->msg[1])); 1320 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1321 return (0); 1322 } 1323 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1324 /* Status phase wasn't followed by message in phase? */ 1325 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1326 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1327 if (rp->siop_sbcl == 0xa7) { 1328 /* It is now, just continue the script? */ 1329 rp->siop_dcntl |= SIOP_DCNTL_STD; 1330 return (0); 1331 } 1332 } 1333 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1334 dma_cachectl (&acb->stat[0], 1); 1335 dma_cachectl (&acb->msg[0], 1); 1336 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1337 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1338 rp->siop_sbcl); 1339 siopreset (sc); 1340 *status = -1; 1341 return 0; /* siopreset has cleaned up */ 1342 } 1343 if (sstat0 & SIOP_SSTAT0_SGE) 1344 printf ("SIOP: SCSI Gross Error\n"); 1345 if (sstat0 & SIOP_SSTAT0_PAR) 1346 printf ("SIOP: Parity Error\n"); 1347 if (dstat & SIOP_DSTAT_IID) 1348 printf ("SIOP: Invalid instruction detected\n"); 1349 bad_phase: 1350 /* 1351 * temporary panic for unhandled conditions 1352 * displays various things about the 53C710 status and registers 1353 * then panics. 1354 * XXXX need to clean this up to print out the info, reset, and continue 1355 */ 1356 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1357 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1358 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1359 *((long *)&rp->siop_dcmd)); 1360 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1361 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1362 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1363 #ifdef DEBUG 1364 if (siop_debug & 0x20) 1365 panic("siopchkintr: **** temp ****"); 1366 #endif 1367 #ifdef DDB 1368 Debugger (); 1369 #endif 1370 siopreset (sc); /* hard reset */ 1371 *status = -1; 1372 return 0; /* siopreset cleaned up */ 1373 } 1374 1375 void 1376 siop_select(struct siop_softc *sc) 1377 { 1378 siop_regmap_p rp; 1379 struct siop_acb *acb = sc->sc_nexus; 1380 1381 #ifdef DEBUG 1382 if (siop_debug & 1) 1383 printf ("%s: select ", sc->sc_dev.dv_xname); 1384 #endif 1385 1386 rp = sc->sc_siopp; 1387 if (acb->xs->xs_control & XS_CTL_POLL || siop_no_dma) { 1388 sc->sc_flags |= SIOP_INTSOFF; 1389 sc->sc_flags &= ~SIOP_INTDEFER; 1390 if ((rp->siop_istat & 0x08) == 0) { 1391 rp->siop_sien = 0; 1392 rp->siop_dien = 0; 1393 } 1394 #if 0 1395 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1396 sc->sc_flags &= ~SIOP_INTSOFF; 1397 if ((rp->siop_istat & 0x08) == 0) { 1398 rp->siop_sien = sc->sc_sien; 1399 rp->siop_dien = sc->sc_dien; 1400 } 1401 #endif 1402 } 1403 #ifdef DEBUG 1404 if (siop_debug & 1) 1405 printf ("siop_select: target %x cmd %02x ds %p\n", 1406 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1407 &sc->sc_nexus->ds); 1408 #endif 1409 1410 siop_start(sc, acb->xs->xs_periph->periph_target, 1411 acb->xs->xs_periph->periph_lun, 1412 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1413 1414 return; 1415 } 1416 1417 /* 1418 * 53C710 interrupt handler 1419 */ 1420 1421 void 1422 siopintr(register struct siop_softc *sc) 1423 { 1424 siop_regmap_p rp; 1425 register u_char istat, dstat, sstat0; 1426 int status; 1427 int s = splbio(); 1428 1429 istat = sc->sc_istat; 1430 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1431 splx(s); 1432 return; 1433 } 1434 1435 /* Got a valid interrupt on this device */ 1436 rp = sc->sc_siopp; 1437 dstat = sc->sc_dstat; 1438 sstat0 = sc->sc_sstat0; 1439 if (dstat & SIOP_DSTAT_SIR) 1440 sc->sc_intcode = rp->siop_dsps; 1441 sc->sc_istat = 0; 1442 #ifdef DEBUG 1443 if (siop_debug & 1) 1444 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1445 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1446 if (!sc->sc_active) { 1447 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1448 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1449 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1450 } 1451 #endif 1452 1453 #ifdef DEBUG 1454 if (siop_debug & 5) { 1455 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1456 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1457 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1458 rp->siop_dsps, rp->siop_sbcl, 1459 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1460 } 1461 #endif 1462 if (sc->sc_flags & SIOP_INTDEFER) { 1463 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1464 rp->siop_sien = sc->sc_sien; 1465 rp->siop_dien = sc->sc_dien; 1466 } 1467 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1468 #if 1 1469 if (status == 0xff) 1470 printf ("siopintr: status == 0xff\n"); 1471 #endif 1472 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1473 #if 0 1474 if (rp->siop_sbcl & SIOP_BSY) { 1475 printf ("%s: SCSI bus busy at completion", 1476 sc->sc_dev.dv_xname); 1477 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1478 sc->sc_nexus->xs->xs_periph->periph_target, 1479 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1480 rp->siop_dsp - sc->sc_scriptspa); 1481 } 1482 #endif 1483 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1484 sc->sc_nexus->stat[0] : -1); 1485 } 1486 } 1487 splx(s); 1488 } 1489 1490 /* 1491 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1492 * not be correct for other 53c710 boards. 1493 * 1494 */ 1495 void 1496 scsi_period_to_siop(struct siop_softc *sc, int target) 1497 { 1498 int period, offset, sxfer, sbcl = 0; 1499 #ifdef DEBUG_SYNC 1500 int i; 1501 #endif 1502 1503 period = sc->sc_nexus->msg[4]; 1504 offset = sc->sc_nexus->msg[5]; 1505 #ifdef DEBUG_SYNC 1506 sxfer = 0; 1507 if (offset <= SIOP_MAX_OFFSET) 1508 sxfer = offset; 1509 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1510 if (period <= sync_tab[i].p) { 1511 sxfer |= sync_tab[i].r & 0x70; 1512 sbcl = sync_tab[i].r & 0x03; 1513 break; 1514 } 1515 } 1516 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1517 #endif 1518 for (sbcl = 1; sbcl < 4; ++sbcl) { 1519 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1520 if (sxfer >= 0 && sxfer <= 7) 1521 break; 1522 } 1523 if (sbcl > 3) { 1524 printf("siop sync: unable to compute sync params for period %dns\n", 1525 period * 4); 1526 /* 1527 * XXX need to pick a value we can do and renegotiate 1528 */ 1529 sxfer = sbcl = 0; 1530 } else { 1531 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1532 offset : SIOP_MAX_OFFSET); 1533 #ifdef DEBUG_SYNC 1534 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1535 period * 4, sxfer, sbcl); 1536 printf(" actual period %dns\n", 1537 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1538 #endif 1539 } 1540 sc->sc_sync[target].sxfer = sxfer; 1541 sc->sc_sync[target].sbcl = sbcl; 1542 #ifdef DEBUG_SYNC 1543 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1544 #endif 1545 } 1546 1547 #ifdef DEBUG 1548 1549 #if SIOP_TRACE_SIZE 1550 void 1551 siop_dump_trace(void) 1552 { 1553 int i; 1554 1555 printf("siop trace: next index %d\n", siop_trix); 1556 i = siop_trix; 1557 do { 1558 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1559 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1560 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1561 } while (i != siop_trix); 1562 } 1563 #endif 1564 1565 void 1566 siop_dump_acb(struct siop_acb *acb) 1567 { 1568 u_char *b = (u_char *) &acb->cmd; 1569 int i; 1570 1571 printf("acb@%p ", acb); 1572 if (acb->xs == NULL) { 1573 printf("<unused>\n"); 1574 return; 1575 } 1576 printf("(%d:%d) flags %2x clen %2d cmd ", 1577 acb->xs->xs_periph->periph_target, 1578 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1579 for (i = acb->clen; i; --i) 1580 printf(" %02x", *b++); 1581 printf("\n"); 1582 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1583 acb->xs->datalen); 1584 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1585 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1586 } 1587 1588 void 1589 siop_dump(struct siop_softc *sc) 1590 { 1591 struct siop_acb *acb; 1592 siop_regmap_p rp = sc->sc_siopp; 1593 int s; 1594 int i; 1595 1596 s = splbio(); 1597 #if SIOP_TRACE_SIZE 1598 siop_dump_trace(); 1599 #endif 1600 printf("%s@%p regs %p istat %x\n", 1601 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1602 if ((acb = sc->free_list.tqh_first) > 0) { 1603 printf("Free list:\n"); 1604 while (acb) { 1605 siop_dump_acb(acb); 1606 acb = acb->chain.tqe_next; 1607 } 1608 } 1609 if ((acb = sc->ready_list.tqh_first) > 0) { 1610 printf("Ready list:\n"); 1611 while (acb) { 1612 siop_dump_acb(acb); 1613 acb = acb->chain.tqe_next; 1614 } 1615 } 1616 if ((acb = sc->nexus_list.tqh_first) > 0) { 1617 printf("Nexus list:\n"); 1618 while (acb) { 1619 siop_dump_acb(acb); 1620 acb = acb->chain.tqe_next; 1621 } 1622 } 1623 if (sc->sc_nexus) { 1624 printf("Nexus:\n"); 1625 siop_dump_acb(sc->sc_nexus); 1626 } 1627 for (i = 0; i < 8; ++i) { 1628 if (sc->sc_tinfo[i].cmds > 2) { 1629 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1630 i, sc->sc_tinfo[i].cmds, 1631 sc->sc_tinfo[i].dconns, 1632 sc->sc_tinfo[i].lubusy); 1633 } 1634 } 1635 splx(s); 1636 } 1637 #endif 1638
Indexes created Fri Sep 26 20:09:58 GMT 2025