siop.c revision 1.46
1 /* $NetBSD: siop.c,v 1.46 2002/01/28 09:57:03 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/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: siop.c,v 1.46 2002/01/28 09:57:03 aymeric Exp $"); 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/device.h> 54 #include <sys/disklabel.h> 55 #include <sys/dkstat.h> 56 #include <sys/buf.h> 57 #include <sys/malloc.h> 58 #include <dev/scsipi/scsi_all.h> 59 #include <dev/scsipi/scsipi_all.h> 60 #include <dev/scsipi/scsiconf.h> 61 #include <machine/cpu.h> 62 #ifdef __m68k__ 63 #include <m68k/cacheops.h> 64 #endif 65 #include <amiga/amiga/custom.h> 66 #include <amiga/amiga/isr.h> 67 #include <amiga/dev/siopreg.h> 68 #include <amiga/dev/siopvar.h> 69 70 /* 71 * SCSI delays 72 * In u-seconds, primarily for state changes on the SPC. 73 */ 74 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 75 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 76 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 77 78 void siop_select(struct siop_softc *); 79 void siopabort(struct siop_softc *, siop_regmap_p, char *); 80 void sioperror(struct siop_softc *, siop_regmap_p, u_char); 81 void siopstart(struct siop_softc *); 82 int siop_checkintr(struct siop_softc *, u_char, u_char, u_char, int *); 83 void siopreset(struct siop_softc *); 84 void siopsetdelay(int); 85 void siop_scsidone(struct siop_acb *, int); 86 void siop_sched(struct siop_softc *); 87 void siop_poll(struct siop_softc *, struct siop_acb *); 88 void siopintr(struct siop_softc *); 89 void scsi_period_to_siop(struct siop_softc *, int); 90 void siop_start(struct siop_softc *, int, int, u_char *, int, u_char *, int); 91 void siop_dump_acb(struct siop_acb *); 92 93 /* 53C710 script */ 94 const 95 #include <amiga/dev/siop_script.out> 96 97 /* default to not inhibit sync negotiation on any drive */ 98 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 99 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 100 int siop_no_dma = 0; 101 102 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 103 104 int siop_cmd_wait = SCSI_CMD_WAIT; 105 int siop_data_wait = SCSI_DATA_WAIT; 106 int siop_init_wait = SCSI_INIT_WAIT; 107 108 #ifdef DEBUG_SYNC 109 /* 110 * sync period transfer lookup - only valid for 66Mhz clock 111 */ 112 static struct { 113 unsigned char p; /* period from sync request message */ 114 unsigned char r; /* siop_period << 4 | sbcl */ 115 } sync_tab[] = { 116 { 60/4, 0<<4 | 1}, 117 { 76/4, 1<<4 | 1}, 118 { 92/4, 2<<4 | 1}, 119 { 92/4, 0<<4 | 2}, 120 {108/4, 3<<4 | 1}, 121 {116/4, 1<<4 | 2}, 122 {120/4, 4<<4 | 1}, 123 {120/4, 0<<4 | 3}, 124 {136/4, 5<<4 | 1}, 125 {140/4, 2<<4 | 2}, 126 {152/4, 6<<4 | 1}, 127 {152/4, 1<<4 | 3}, 128 {164/4, 3<<4 | 2}, 129 {168/4, 7<<4 | 1}, 130 {180/4, 2<<4 | 3}, 131 {184/4, 4<<4 | 2}, 132 {208/4, 5<<4 | 2}, 133 {212/4, 3<<4 | 3}, 134 {232/4, 6<<4 | 2}, 135 {240/4, 4<<4 | 3}, 136 {256/4, 7<<4 | 2}, 137 {272/4, 5<<4 | 3}, 138 {300/4, 6<<4 | 3}, 139 {332/4, 7<<4 | 3} 140 }; 141 #endif 142 143 #ifdef DEBUG 144 /* 145 * 0x01 - full debug 146 * 0x02 - DMA chaining 147 * 0x04 - siopintr 148 * 0x08 - phase mismatch 149 * 0x10 - <not used> 150 * 0x20 - panic on unhandled exceptions 151 * 0x100 - disconnect/reselect 152 */ 153 int siop_debug = 0; 154 int siopsync_debug = 0; 155 int siopdma_hits = 0; 156 int siopdma_misses = 0; 157 int siopchain_ints = 0; 158 int siopstarts = 0; 159 int siopints = 0; 160 int siopphmm = 0; 161 #define SIOP_TRACE_SIZE 128 162 #define SIOP_TRACE(a,b,c,d) \ 163 siop_trbuf[siop_trix] = (a); \ 164 siop_trbuf[siop_trix+1] = (b); \ 165 siop_trbuf[siop_trix+2] = (c); \ 166 siop_trbuf[siop_trix+3] = (d); \ 167 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 168 u_char siop_trbuf[SIOP_TRACE_SIZE]; 169 int siop_trix; 170 void siop_dump(struct siop_softc *); 171 void siop_dump_trace(void); 172 #else 173 #define SIOP_TRACE(a,b,c,d) 174 #endif 175 176 177 /* 178 * default minphys routine for siop based controllers 179 */ 180 void 181 siop_minphys(struct buf *bp) 182 { 183 184 /* 185 * No max transfer at this level. 186 */ 187 minphys(bp); 188 } 189 190 /* 191 * used by specific siop controller 192 * 193 */ 194 void 195 siop_scsipi_request(struct scsipi_channel *chan, 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(struct siop_softc *sc, struct siop_acb *acb) 267 { 268 siop_regmap_p rp = sc->sc_siopp; 269 struct scsipi_xfer *xs = acb->xs; 270 int i; 271 int status; 272 u_char istat; 273 u_char dstat; 274 u_char sstat0; 275 int s; 276 int to; 277 278 s = splbio(); 279 to = xs->timeout / 1000; 280 if (sc->nexus_list.tqh_first) 281 printf("%s: siop_poll called with disconnected device\n", 282 sc->sc_dev.dv_xname); 283 for (;;) { 284 /* use cmd_wait values? */ 285 i = 50000; 286 /* XXX spl0(); */ 287 while (((istat = rp->siop_istat) & 288 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 289 if (--i <= 0) { 290 #ifdef DEBUG 291 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 292 xs->xs_periph->periph_target, acb->cmd.opcode, 293 rp->siop_sbcl, rp->siop_dsp, 294 rp->siop_dsp - sc->sc_scriptspa, 295 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 296 #endif 297 i = 50000; 298 --to; 299 if (to <= 0) { 300 siopreset(sc); 301 return; 302 } 303 } 304 delay(20); 305 } 306 sstat0 = rp->siop_sstat0; 307 dstat = rp->siop_dstat; 308 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 309 if (acb != sc->sc_nexus) 310 printf("%s: siop_poll disconnected device completed\n", 311 sc->sc_dev.dv_xname); 312 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 313 sc->sc_flags &= ~SIOP_INTSOFF; 314 rp->siop_sien = sc->sc_sien; 315 rp->siop_dien = sc->sc_dien; 316 } 317 siop_scsidone(sc->sc_nexus, status); 318 } 319 320 if (xs->xs_status & XS_STS_DONE) 321 break; 322 } 323 splx(s); 324 } 325 326 /* 327 * start next command that's ready 328 */ 329 void 330 siop_sched(struct siop_softc *sc) 331 { 332 struct scsipi_periph *periph; 333 struct siop_acb *acb; 334 int i; 335 336 #ifdef DEBUG 337 if (sc->sc_nexus) { 338 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 339 sc->sc_dev.dv_xname, sc->sc_nexus, 340 sc->sc_nexus->xs->xs_periph->periph_target, 341 sc->ready_list.tqh_first, 342 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 343 return; 344 } 345 #endif 346 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 347 periph = acb->xs->xs_periph; 348 i = periph->periph_target; 349 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 350 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 351 352 TAILQ_REMOVE(&sc->ready_list, acb, chain); 353 sc->sc_nexus = acb; 354 periph = acb->xs->xs_periph; 355 ti = &sc->sc_tinfo[periph->periph_target]; 356 ti->lubusy |= (1 << periph->periph_lun); 357 break; 358 } 359 } 360 361 if (acb == NULL) { 362 #ifdef DEBUGXXX 363 printf("%s: siop_sched didn't find ready command\n", 364 sc->sc_dev.dv_xname); 365 #endif 366 return; 367 } 368 369 if (acb->xs->xs_control & XS_CTL_RESET) 370 siopreset(sc); 371 372 #if 0 373 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 374 #endif 375 ++sc->sc_active; 376 siop_select(sc); 377 } 378 379 void 380 siop_scsidone(struct siop_acb *acb, int stat) 381 { 382 struct scsipi_xfer *xs; 383 struct scsipi_periph *periph; 384 struct siop_softc *sc; 385 int dosched = 0; 386 387 if (acb == NULL || (xs = acb->xs) == NULL) { 388 #ifdef DIAGNOSTIC 389 printf("siop_scsidone: NULL acb or scsipi_xfer\n"); 390 #if defined(DEBUG) && defined(DDB) 391 Debugger(); 392 #endif 393 #endif 394 return; 395 } 396 periph = xs->xs_periph; 397 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev; 398 399 xs->status = stat; 400 xs->resid = 0; /* XXXX */ 401 402 if (xs->error == XS_NOERROR) { 403 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 404 xs->error = XS_BUSY; 405 } 406 407 /* 408 * Remove the ACB from whatever queue it's on. We have to do a bit of 409 * a hack to figure out which queue it's on. Note that it is *not* 410 * necessary to cdr down the ready queue, but we must cdr down the 411 * nexus queue and see if it's there, so we can mark the unit as no 412 * longer busy. This code is sickening, but it works. 413 */ 414 if (acb == sc->sc_nexus) { 415 sc->sc_nexus = NULL; 416 sc->sc_tinfo[periph->periph_target].lubusy &= 417 ~(1<<periph->periph_lun); 418 if (sc->ready_list.tqh_first) 419 dosched = 1; /* start next command */ 420 --sc->sc_active; 421 SIOP_TRACE('d','a',stat,0) 422 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 423 TAILQ_REMOVE(&sc->ready_list, acb, chain); 424 SIOP_TRACE('d','r',stat,0) 425 } else { 426 register struct siop_acb *acb2; 427 for (acb2 = sc->nexus_list.tqh_first; acb2; 428 acb2 = acb2->chain.tqe_next) 429 if (acb2 == acb) { 430 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 431 sc->sc_tinfo[periph->periph_target].lubusy 432 &= ~(1<<periph->periph_lun); 433 --sc->sc_active; 434 break; 435 } 436 if (acb2) 437 ; 438 else if (acb->chain.tqe_next) { 439 TAILQ_REMOVE(&sc->ready_list, acb, chain); 440 --sc->sc_active; 441 } else { 442 printf("%s: can't find matching acb\n", 443 sc->sc_dev.dv_xname); 444 #ifdef DDB 445 /* Debugger(); */ 446 #endif 447 } 448 SIOP_TRACE('d','n',stat,0); 449 } 450 /* Put it on the free list. */ 451 acb->flags = ACB_FREE; 452 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 453 454 sc->sc_tinfo[periph->periph_target].cmds++; 455 456 scsipi_done(xs); 457 458 if (dosched && sc->sc_nexus == NULL) 459 siop_sched(sc); 460 } 461 462 void 463 siopabort(register struct siop_softc *sc, siop_regmap_p rp, char *where) 464 { 465 #ifdef fix_this 466 int i; 467 #endif 468 469 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 470 sc->sc_dev.dv_xname, 471 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 472 473 if (sc->sc_active > 0) { 474 #ifdef TODO 475 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 476 WAIT_CIP (rp); 477 478 GET_SBIC_asr (rp, asr); 479 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 480 { 481 /* ok, get more drastic.. */ 482 483 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 484 delay(25); 485 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 486 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 487 488 return; 489 } 490 491 do 492 { 493 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 494 GET_SBIC_csr (rp, csr); 495 } 496 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 497 && (csr != SBIC_CSR_CMD_INVALID)); 498 #endif 499 500 /* lets just hope it worked.. */ 501 #ifdef fix_this 502 for (i = 0; i < 2; ++i) { 503 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 504 sc->sc_cur) { 505 printf ("siopabort: cleanup!\n"); 506 sc->sc_iob[i].sc_xs = NULL; 507 } 508 } 509 #endif /* fix_this */ 510 /* sc->sc_active = 0; */ 511 } 512 } 513 514 void 515 siopinitialize(struct siop_softc *sc) 516 { 517 int i; 518 u_int inhibit_sync; 519 extern u_long scsi_nosync; 520 extern int shift_nosync; 521 522 /* 523 * Need to check that scripts is on a long word boundary 524 * Also should verify that dev doesn't span non-contiguous 525 * physical pages. 526 */ 527 sc->sc_scriptspa = kvtop((caddr_t)scripts); 528 529 /* 530 * malloc sc_acb to ensure that DS is on a long word boundary. 531 */ 532 533 MALLOC(sc->sc_acb, struct siop_acb *, 534 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 535 if (sc->sc_acb == NULL) 536 panic("siopinitialize: ACB malloc failed!"); 537 538 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 539 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 540 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 541 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 542 if (sc->sc_minsync < 25) 543 sc->sc_minsync = 25; 544 if (sc->sc_clock_freq <= 25) { 545 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 546 sc->sc_tcp[0] = sc->sc_tcp[1]; 547 } else if (sc->sc_clock_freq <= 37) { 548 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 549 sc->sc_tcp[0] = sc->sc_tcp[2]; 550 } else if (sc->sc_clock_freq <= 50) { 551 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 552 sc->sc_tcp[0] = sc->sc_tcp[3]; 553 } else { 554 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 555 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 556 } 557 558 if (scsi_nosync) { 559 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 560 shift_nosync += 8; 561 #ifdef DEBUG 562 if (inhibit_sync) 563 printf("%s: Inhibiting synchronous transfer %02x\n", 564 sc->sc_dev.dv_xname, inhibit_sync); 565 #endif 566 for (i = 0; i < 8; ++i) 567 if (inhibit_sync & (1 << i)) 568 siop_inhibit_sync[i] = 1; 569 } 570 571 siopreset (sc); 572 } 573 574 void 575 siopreset(struct siop_softc *sc) 576 { 577 siop_regmap_p rp; 578 u_int i, s; 579 u_char dummy; 580 struct siop_acb *acb; 581 582 rp = sc->sc_siopp; 583 584 if (sc->sc_flags & SIOP_ALIVE) 585 siopabort(sc, rp, "reset"); 586 587 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 588 589 s = splbio(); 590 591 /* 592 * Reset the chip 593 * XXX - is this really needed? 594 */ 595 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 596 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 597 rp->siop_istat &= ~SIOP_ISTAT_RST; 598 /* 599 * Reset SCSI bus (do we really want this?) 600 */ 601 rp->siop_sien = 0; 602 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 603 delay(1); 604 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 605 606 /* 607 * Set up various chip parameters 608 */ 609 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 610 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 611 rp->siop_dcntl = sc->sc_dcntl; 612 rp->siop_dmode = 0x80; /* burst length = 4 */ 613 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 614 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 615 rp->siop_scid = 1 << sc->sc_channel.chan_id; 616 rp->siop_dwt = 0x00; 617 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 618 rp->siop_ctest7 |= sc->sc_ctest7; 619 620 /* will need to re-negotiate sync xfers */ 621 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 622 623 i = rp->siop_istat; 624 if (i & SIOP_ISTAT_SIP) 625 dummy = rp->siop_sstat0; 626 if (i & SIOP_ISTAT_DIP) 627 dummy = rp->siop_dstat; 628 629 splx (s); 630 631 delay (siop_reset_delay * 1000); 632 printf("siop id %d reset V%d\n", sc->sc_channel.chan_id, 633 rp->siop_ctest8 >> 4); 634 635 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 636 TAILQ_INIT(&sc->ready_list); 637 TAILQ_INIT(&sc->nexus_list); 638 TAILQ_INIT(&sc->free_list); 639 sc->sc_nexus = NULL; 640 acb = sc->sc_acb; 641 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 642 for (i = 0; i < SIOP_NACB; i++) { 643 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 644 acb++; 645 } 646 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 647 } else { 648 if (sc->sc_nexus != NULL) { 649 sc->sc_nexus->xs->error = XS_RESET; 650 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 651 } 652 while ((acb = sc->nexus_list.tqh_first) > 0) { 653 acb->xs->error = XS_RESET; 654 siop_scsidone(acb, acb->stat[0]); 655 } 656 } 657 658 sc->sc_flags |= SIOP_ALIVE; 659 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 660 /* enable SCSI and DMA interrupts */ 661 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 662 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 663 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 664 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 665 rp->siop_sien = sc->sc_sien; 666 rp->siop_dien = sc->sc_dien; 667 } 668 669 /* 670 * Setup Data Storage for 53C710 and start SCRIPTS processing 671 */ 672 673 void 674 siop_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, int clen, 675 u_char *buf, int len) 676 { 677 siop_regmap_p rp = sc->sc_siopp; 678 int nchain; 679 int count, tcount; 680 char *addr, *dmaend; 681 struct siop_acb *acb = sc->sc_nexus; 682 #ifdef DEBUG 683 int i; 684 #endif 685 686 #ifdef DEBUG 687 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 688 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 689 rp, &scripts, &acb->ds, sc->sc_active); 690 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 691 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 692 rp->siop_sien, rp->siop_dien); 693 #ifdef DDB 694 /*Debugger();*/ 695 #endif 696 } 697 #endif 698 acb->msgout[0] = MSG_IDENTIFY | lun; 699 if (siop_allow_disc[target] & 2 || 700 (siop_allow_disc[target] && len == 0)) 701 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 702 acb->status = 0; 703 acb->stat[0] = -1; 704 acb->msg[0] = -1; 705 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 706 acb->ds.idlen = 1; 707 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 708 acb->ds.cmdlen = clen; 709 acb->ds.cmdbuf = (char *) kvtop(cbuf); 710 acb->ds.stslen = 1; 711 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 712 acb->ds.msglen = 1; 713 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 714 acb->msg[1] = -1; 715 acb->ds.msginlen = 1; 716 acb->ds.extmsglen = 1; 717 acb->ds.synmsglen = 3; 718 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 719 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 720 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 721 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 722 723 /* 724 * Negotiate wide is the initial negotiation state; since the 53c710 725 * doesn't do wide transfers, just begin the synchronous transfer 726 * negotation here. 727 */ 728 if (sc->sc_sync[target].state == NEG_WIDE) { 729 if (siop_inhibit_sync[target]) { 730 sc->sc_sync[target].state = NEG_DONE; 731 sc->sc_sync[target].sbcl = 0; 732 sc->sc_sync[target].sxfer = 0; 733 #ifdef DEBUG 734 if (siopsync_debug) 735 printf ("Forcing target %d asynchronous\n", target); 736 #endif 737 } 738 else { 739 acb->msg[2] = -1; 740 acb->msgout[1] = MSG_EXT_MESSAGE; 741 acb->msgout[2] = 3; 742 acb->msgout[3] = MSG_SYNC_REQ; 743 #ifdef MAXTOR_SYNC_KLUDGE 744 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 745 #else 746 acb->msgout[4] = sc->sc_minsync; 747 #endif 748 acb->msgout[5] = SIOP_MAX_OFFSET; 749 acb->ds.idlen = 6; 750 sc->sc_sync[target].state = NEG_WAITS; 751 #ifdef DEBUG 752 if (siopsync_debug) 753 printf ("Sending sync request to target %d\n", target); 754 #endif 755 } 756 } 757 758 /* 759 * Build physical DMA addresses for scatter/gather I/O 760 */ 761 acb->iob_buf = buf; 762 acb->iob_len = len; 763 acb->iob_curbuf = acb->iob_curlen = 0; 764 nchain = 0; 765 count = len; 766 addr = buf; 767 dmaend = NULL; 768 while (count > 0) { 769 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 770 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 771 tcount = count; 772 acb->ds.chain[nchain].datalen = tcount; 773 addr += tcount; 774 count -= tcount; 775 if (acb->ds.chain[nchain].databuf == dmaend) { 776 dmaend += acb->ds.chain[nchain].datalen; 777 acb->ds.chain[nchain].datalen = 0; 778 acb->ds.chain[--nchain].datalen += tcount; 779 #ifdef DEBUG 780 ++siopdma_hits; 781 #endif 782 } 783 else { 784 dmaend = acb->ds.chain[nchain].databuf + 785 acb->ds.chain[nchain].datalen; 786 acb->ds.chain[nchain].datalen = tcount; 787 #ifdef DEBUG 788 if (nchain) /* Don't count miss on first one */ 789 ++siopdma_misses; 790 #endif 791 } 792 ++nchain; 793 } 794 #ifdef DEBUG 795 if (nchain != 1 && len != 0 && siop_debug & 3) { 796 printf ("DMA chaining set: %d\n", nchain); 797 for (i = 0; i < nchain; ++i) { 798 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 799 acb->ds.chain[i].datalen); 800 } 801 } 802 #endif 803 804 /* push data cache for all data the 53c710 needs to access */ 805 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 806 dma_cachectl (cbuf, clen); 807 if (buf != NULL && len != 0) 808 dma_cachectl (buf, len); 809 #ifdef DEBUG 810 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 811 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 812 rp, &scripts, &acb->ds, sc->sc_active); 813 #ifdef DDB 814 /*Debugger();*/ 815 #endif 816 } 817 #endif 818 if (sc->nexus_list.tqh_first == NULL) { 819 if (rp->siop_istat & SIOP_ISTAT_CON) 820 printf("%s: siop_select while connected?\n", 821 sc->sc_dev.dv_xname); 822 rp->siop_temp = 0; 823 rp->siop_sbcl = sc->sc_sync[target].sbcl; 824 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 825 rp->siop_dsp = sc->sc_scriptspa; 826 SIOP_TRACE('s',1,0,0) 827 } else { 828 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 829 rp->siop_istat = SIOP_ISTAT_SIGP; 830 SIOP_TRACE('s',2,0,0); 831 } 832 else { 833 SIOP_TRACE('s',3,rp->siop_istat,0); 834 } 835 } 836 #ifdef DEBUG 837 ++siopstarts; 838 #endif 839 } 840 841 /* 842 * Process a DMA or SCSI interrupt from the 53C710 SIOP 843 */ 844 845 int 846 siop_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 847 u_char sstat0, int *status) 848 { 849 siop_regmap_p rp = sc->sc_siopp; 850 struct siop_acb *acb = sc->sc_nexus; 851 int target = 0; 852 int dfifo, dbc, sstat1; 853 854 dfifo = rp->siop_dfifo; 855 dbc = rp->siop_dbc0; 856 sstat1 = rp->siop_sstat1; 857 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 858 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 859 ; 860 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 861 #ifdef DEBUG 862 ++siopints; 863 #if 0 864 if (siop_debug & 0x100) { 865 DCIAS(&acb->stat[0]); /* XXX */ 866 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 867 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 868 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 869 acb->msg[0], acb->msg[1], acb->msg[2], 870 acb->msg[3], acb->msg[4], acb->msg[5]); 871 } 872 #endif 873 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 874 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 875 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 876 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 877 sc->sc_scriptspa + sizeof(scripts)); 878 printf(" istat %x dstat %x sstat0 %x\n", 879 istat, dstat, sstat0); 880 #ifdef DDB 881 Debugger(); 882 #endif 883 } 884 #endif 885 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 886 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 887 /* Normal completion status, or check condition */ 888 #ifdef DEBUG 889 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 890 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 891 kvtop((caddr_t)&acb->ds)); 892 panic("*** siop DSA invalid ***"); 893 } 894 #endif 895 target = acb->xs->xs_periph->periph_target; 896 if (sc->sc_sync[target].state == NEG_WAITS) { 897 if (acb->msg[1] == 0xff) 898 printf ("%s: target %d ignored sync request\n", 899 sc->sc_dev.dv_xname, target); 900 else if (acb->msg[1] == MSG_REJECT) 901 printf ("%s: target %d rejected sync request\n", 902 sc->sc_dev.dv_xname, target); 903 else 904 /* XXX - need to set sync transfer parameters */ 905 printf("%s: target %d (sync) %02x %02x %02x\n", 906 sc->sc_dev.dv_xname, target, acb->msg[1], 907 acb->msg[2], acb->msg[3]); 908 sc->sc_sync[target].state = NEG_DONE; 909 } 910 dma_cachectl(&acb->stat[0], 1); 911 *status = acb->stat[0]; 912 #ifdef DEBUG 913 if (rp->siop_sbcl & SIOP_BSY) { 914 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 915 rp, &scripts, &acb->ds);*/ 916 #ifdef DDB 917 /*Debugger();*/ 918 #endif 919 } 920 if (acb->msg[0] != 0x00) 921 printf("%s: message was not COMMAND COMPLETE: %x\n", 922 sc->sc_dev.dv_xname, acb->msg[0]); 923 #endif 924 if (sc->nexus_list.tqh_first) 925 rp->siop_dcntl |= SIOP_DCNTL_STD; 926 return 1; 927 } 928 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 929 target = acb->xs->xs_periph->periph_target; 930 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 931 acb->msg[3] == MSG_SYNC_REQ) { 932 #ifdef DEBUG 933 if (siopsync_debug) 934 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 935 acb->msg[0], acb->msg[1], acb->msg[2], 936 acb->msg[3], acb->msg[4], acb->msg[5]); 937 #endif 938 sc->sc_sync[target].sxfer = 0; 939 sc->sc_sync[target].sbcl = 0; 940 if (acb->msg[2] == 3 && 941 acb->msg[3] == MSG_SYNC_REQ && 942 acb->msg[5] != 0) { 943 #ifdef MAXTOR_KLUDGE 944 /* 945 * Kludge for my Maxtor XT8580S 946 * It accepts whatever we request, even 947 * though it won't work. So we ask for 948 * a short period than we can handle. If 949 * the device says it can do it, use 208ns. 950 * If the device says it can do less than 951 * 100ns, then we limit it to 100ns. 952 */ 953 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 954 #ifdef DEBUG 955 printf ("%d: target %d wanted %dns period\n", 956 sc->sc_dev.dv_xname, target, 957 acb->msg[4] * 4); 958 #endif 959 if (acb->msg[4] == 50 / 4) 960 acb->msg[4] = 208 / 4; 961 else 962 acb->msg[4] = 100 / 4; 963 } 964 #endif /* MAXTOR_KLUDGE */ 965 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 966 sc->sc_dev.dv_xname, target, 967 acb->msg[4] * 4, acb->msg[5]); 968 scsi_period_to_siop (sc, target); 969 } 970 rp->siop_sxfer = sc->sc_sync[target].sxfer; 971 rp->siop_sbcl = sc->sc_sync[target].sbcl; 972 if (sc->sc_sync[target].state == NEG_WAITS) { 973 sc->sc_sync[target].state = NEG_DONE; 974 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 975 return(0); 976 } 977 rp->siop_dcntl |= SIOP_DCNTL_STD; 978 sc->sc_sync[target].state = NEG_DONE; 979 return (0); 980 } 981 /* XXX - not SDTR message */ 982 } 983 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 984 #ifdef DEBUG 985 ++siopphmm; 986 if (acb == NULL) 987 printf("%s: Phase mismatch with no active command?\n", 988 sc->sc_dev.dv_xname); 989 #endif 990 if (acb->iob_len) { 991 int adjust; 992 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 993 if (sstat1 & SIOP_SSTAT1_ORF) 994 ++adjust; 995 if (sstat1 & SIOP_SSTAT1_OLF) 996 ++adjust; 997 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 998 acb->iob_curlen += adjust; 999 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1000 #ifdef DEBUG 1001 if (siop_debug & 0x100) { 1002 int i; 1003 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1004 acb->iob_curbuf, acb->iob_curlen, dfifo, 1005 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1006 if (acb->ds.chain[1].datalen) { 1007 for (i = 0; acb->ds.chain[i].datalen; ++i) 1008 printf("chain[%d] addr %p len %lx\n", 1009 i, acb->ds.chain[i].databuf, 1010 acb->ds.chain[i].datalen); 1011 } 1012 } 1013 #endif 1014 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1015 } 1016 #ifdef DEBUG 1017 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1018 if (siop_debug & 9) 1019 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1020 rp->siop_sbcl, 1021 rp->siop_dsp - sc->sc_scriptspa, 1022 *((long *)&rp->siop_dcmd)); 1023 #endif 1024 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1025 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1026 rp->siop_sbcl, rp->siop_dsp); 1027 #if defined(DEBUG) && defined(DDB) 1028 /*Debugger(); XXX is*/ 1029 #endif 1030 } 1031 switch (rp->siop_sbcl & 7) { 1032 case 0: /* data out */ 1033 case 1: /* data in */ 1034 case 2: /* status */ 1035 case 3: /* command */ 1036 case 6: /* message in */ 1037 case 7: /* message out */ 1038 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1039 break; 1040 default: 1041 goto bad_phase; 1042 } 1043 return 0; 1044 } 1045 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1046 #ifdef DEBUG 1047 if (acb == NULL) 1048 printf("%s: Select timeout with no active command?\n", 1049 sc->sc_dev.dv_xname); 1050 if (rp->siop_sbcl & SIOP_BSY) { 1051 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1052 rp, &scripts, &acb->ds); 1053 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1054 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1055 if (!(rp->siop_sbcl & SIOP_BSY)) { 1056 printf ("Yikes, it's not busy now!\n"); 1057 #if 0 1058 *status = -1; 1059 if (sc->nexus_list.tqh_first) 1060 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1061 return 1; 1062 #endif 1063 } 1064 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1065 return (0); 1066 #ifdef DDB 1067 Debugger(); 1068 #endif 1069 } 1070 #endif 1071 *status = -1; 1072 acb->xs->error = XS_SELTIMEOUT; 1073 if (sc->nexus_list.tqh_first) 1074 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1075 return 1; 1076 } 1077 if (acb) 1078 target = acb->xs->xs_periph->periph_target; 1079 else 1080 target = 7; 1081 if (sstat0 & SIOP_SSTAT0_UDC) { 1082 #ifdef DEBUG 1083 if (acb == NULL) 1084 printf("%s: Unexpected disconnect with no active command?\n", 1085 sc->sc_dev.dv_xname); 1086 printf ("%s: target %d disconnected unexpectedly\n", 1087 sc->sc_dev.dv_xname, target); 1088 #endif 1089 #if 0 1090 siopabort (sc, rp, "siopchkintr"); 1091 #endif 1092 *status = STS_BUSY; 1093 if (sc->nexus_list.tqh_first) 1094 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1095 return (acb != NULL); 1096 } 1097 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1098 rp->siop_dsps == 0xff02)) { 1099 #ifdef DEBUG 1100 if (siop_debug & 0x100) 1101 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", 1102 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1103 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1104 acb->iob_curbuf, acb->iob_curlen, 1105 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1106 #endif 1107 if (acb == NULL) { 1108 printf("%s: Disconnect with no active command?\n", 1109 sc->sc_dev.dv_xname); 1110 return (0); 1111 } 1112 /* 1113 * XXXX need to update iob_curbuf/iob_curlen to reflect 1114 * current data transferred. If device disconnected in 1115 * the middle of a DMA block, they should already be set 1116 * by the phase change interrupt. If the disconnect 1117 * occurs on a DMA block boundary, we have to figure out 1118 * which DMA block it was. 1119 */ 1120 if (acb->iob_len && rp->siop_temp) { 1121 int n = rp->siop_temp - sc->sc_scriptspa; 1122 1123 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1124 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1125 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1126 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1127 if (n < Ent_datain) 1128 n = (n - Ent_dataout) / 16; 1129 else 1130 n = (n - Ent_datain) / 16; 1131 if (n <= 0 && n > DMAMAXIO) 1132 printf("TEMP invalid %d\n", n); 1133 else { 1134 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1135 acb->iob_curlen = acb->ds.chain[n].datalen; 1136 } 1137 #ifdef DEBUG 1138 if (siop_debug & 0x100) { 1139 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1140 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1141 acb->iob_curlen); 1142 } 1143 #endif 1144 } 1145 /* 1146 * If data transfer was interrupted by disconnect, iob_curbuf 1147 * and iob_curlen should reflect the point of interruption. 1148 * Adjust the DMA chain so that the data transfer begins 1149 * at the appropriate place upon reselection. 1150 * XXX This should only be done on save data pointer message? 1151 */ 1152 if (acb->iob_curlen) { 1153 int i, j; 1154 1155 #ifdef DEBUG 1156 if (siop_debug & 0x100) 1157 printf ("%s: adjusting DMA chain\n", 1158 sc->sc_dev.dv_xname); 1159 if (rp->siop_dsps == 0xff02) 1160 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1161 sc->sc_dev.dv_xname, 1 << target); 1162 #endif 1163 for (i = 0; i < DMAMAXIO; ++i) { 1164 if (acb->ds.chain[i].datalen == 0) 1165 break; 1166 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1167 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1168 acb->ds.chain[i].datalen)) 1169 break; 1170 } 1171 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1172 printf("couldn't find saved data pointer: "); 1173 printf("curbuf %lx curlen %lx i %d\n", 1174 acb->iob_curbuf, acb->iob_curlen, i); 1175 #ifdef DDB 1176 Debugger(); 1177 #endif 1178 } 1179 #ifdef DEBUG 1180 if (siop_debug & 0x100) 1181 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1182 acb->ds.chain[0].databuf, 1183 acb->ds.chain[0].datalen, 1184 acb->iob_curbuf, 1185 acb->iob_curlen); 1186 #endif 1187 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1188 acb->ds.chain[0].datalen = acb->iob_curlen; 1189 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1190 #ifdef DEBUG 1191 if (siop_debug & 0x100) 1192 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1193 acb->ds.chain[j].databuf, 1194 acb->ds.chain[j].datalen, 1195 acb->ds.chain[i].databuf, 1196 acb->ds.chain[i].datalen); 1197 #endif 1198 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1199 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1200 } 1201 if (j < DMAMAXIO) 1202 acb->ds.chain[j].datalen = 0; 1203 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1204 } 1205 ++sc->sc_tinfo[target].dconns; 1206 /* 1207 * add nexus to waiting list 1208 * clear nexus 1209 * try to start another command for another target/lun 1210 */ 1211 acb->status = sc->sc_flags & SIOP_INTSOFF; 1212 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1213 sc->sc_nexus = NULL; /* no current device */ 1214 /* start script to wait for reselect */ 1215 if (sc->sc_nexus == NULL) 1216 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1217 /* XXXX start another command ? */ 1218 if (sc->ready_list.tqh_first) 1219 siop_sched(sc); 1220 return (0); 1221 } 1222 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1223 int reselid = rp->siop_scratch & 0x7f; 1224 int reselun = rp->siop_sfbr & 0x07; 1225 1226 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1227 #ifdef DEBUG 1228 if (siop_debug & 0x100) 1229 printf ("%s: target ID %02x reselected dsps %lx\n", 1230 sc->sc_dev.dv_xname, reselid, 1231 rp->siop_dsps); 1232 if ((rp->siop_sfbr & 0x80) == 0) 1233 printf("%s: Reselect message in was not identify: %x\n", 1234 sc->sc_dev.dv_xname, rp->siop_sfbr); 1235 #endif 1236 if (sc->sc_nexus) { 1237 #ifdef DEBUG 1238 if (siop_debug & 0x100) 1239 printf ("%s: reselect ID %02x w/active\n", 1240 sc->sc_dev.dv_xname, reselid); 1241 #endif 1242 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1243 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1244 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1245 --sc->sc_active; 1246 } 1247 /* 1248 * locate acb of reselecting device 1249 * set sc->sc_nexus to acb 1250 */ 1251 for (acb = sc->nexus_list.tqh_first; acb; 1252 acb = acb->chain.tqe_next) { 1253 if (reselid != (acb->ds.scsi_addr >> 16) || 1254 reselun != (acb->msgout[0] & 0x07)) 1255 continue; 1256 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1257 sc->sc_nexus = acb; 1258 sc->sc_flags |= acb->status; 1259 acb->status = 0; 1260 DCIAS(kvtop(&acb->stat[0])); 1261 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1262 rp->siop_sxfer = 1263 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1264 rp->siop_sbcl = 1265 sc->sc_sync[acb->xs->xs_periph->periph_target].sbcl; 1266 break; 1267 } 1268 if (acb == NULL) { 1269 printf("%s: target ID %02x reselect nexus_list %p\n", 1270 sc->sc_dev.dv_xname, reselid, 1271 sc->nexus_list.tqh_first); 1272 panic("unable to find reselecting device"); 1273 } 1274 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1275 rp->siop_temp = 0; 1276 rp->siop_dcntl |= SIOP_DCNTL_STD; 1277 return (0); 1278 } 1279 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1280 #ifdef DEBUG 1281 u_short ctest2 = rp->siop_ctest2; 1282 1283 /* reselect was interrupted (by Sig_P or select) */ 1284 if (siop_debug & 0x100 || 1285 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1286 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1287 sc->sc_dev.dv_xname, rp->siop_scntl1, 1288 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1289 #endif 1290 /* XXX assumes it was not select */ 1291 if (sc->sc_nexus == NULL) { 1292 #ifdef DEBUG 1293 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1294 sc->sc_dev.dv_xname); 1295 #if 0 1296 siop_dump(sc); 1297 #ifdef DDB 1298 Debugger(); 1299 #endif 1300 #endif 1301 #endif 1302 rp->siop_dcntl |= SIOP_DCNTL_STD; 1303 return(0); 1304 } 1305 target = sc->sc_nexus->xs->xs_periph->periph_target; 1306 rp->siop_temp = 0; 1307 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1308 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1309 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1310 rp->siop_dsp = sc->sc_scriptspa; 1311 return (0); 1312 } 1313 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1314 if (acb == NULL) 1315 printf("%s: Bad message-in with no active command?\n", 1316 sc->sc_dev.dv_xname); 1317 /* Unrecognized message in byte */ 1318 dma_cachectl (&acb->msg[1],1); 1319 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1320 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1321 /* what should be done here? */ 1322 DCIAS(kvtop(&acb->msg[1])); 1323 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1324 return (0); 1325 } 1326 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1327 /* Status phase wasn't followed by message in phase? */ 1328 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1329 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1330 if (rp->siop_sbcl == 0xa7) { 1331 /* It is now, just continue the script? */ 1332 rp->siop_dcntl |= SIOP_DCNTL_STD; 1333 return (0); 1334 } 1335 } 1336 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1337 dma_cachectl (&acb->stat[0], 1); 1338 dma_cachectl (&acb->msg[0], 1); 1339 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1340 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1341 rp->siop_sbcl); 1342 siopreset (sc); 1343 *status = -1; 1344 return 0; /* siopreset has cleaned up */ 1345 } 1346 if (sstat0 & SIOP_SSTAT0_SGE) 1347 printf ("SIOP: SCSI Gross Error\n"); 1348 if (sstat0 & SIOP_SSTAT0_PAR) 1349 printf ("SIOP: Parity Error\n"); 1350 if (dstat & SIOP_DSTAT_IID) 1351 printf ("SIOP: Invalid instruction detected\n"); 1352 bad_phase: 1353 /* 1354 * temporary panic for unhandled conditions 1355 * displays various things about the 53C710 status and registers 1356 * then panics. 1357 * XXXX need to clean this up to print out the info, reset, and continue 1358 */ 1359 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1360 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1361 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1362 *((long *)&rp->siop_dcmd)); 1363 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1364 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1365 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1366 #ifdef DEBUG 1367 if (siop_debug & 0x20) 1368 panic("siopchkintr: **** temp ****"); 1369 #endif 1370 #ifdef DDB 1371 Debugger (); 1372 #endif 1373 siopreset (sc); /* hard reset */ 1374 *status = -1; 1375 return 0; /* siopreset cleaned up */ 1376 } 1377 1378 void 1379 siop_select(struct siop_softc *sc) 1380 { 1381 siop_regmap_p rp; 1382 struct siop_acb *acb = sc->sc_nexus; 1383 1384 #ifdef DEBUG 1385 if (siop_debug & 1) 1386 printf ("%s: select ", sc->sc_dev.dv_xname); 1387 #endif 1388 1389 rp = sc->sc_siopp; 1390 if (acb->xs->xs_control & XS_CTL_POLL || siop_no_dma) { 1391 sc->sc_flags |= SIOP_INTSOFF; 1392 sc->sc_flags &= ~SIOP_INTDEFER; 1393 if ((rp->siop_istat & 0x08) == 0) { 1394 rp->siop_sien = 0; 1395 rp->siop_dien = 0; 1396 } 1397 #if 0 1398 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1399 sc->sc_flags &= ~SIOP_INTSOFF; 1400 if ((rp->siop_istat & 0x08) == 0) { 1401 rp->siop_sien = sc->sc_sien; 1402 rp->siop_dien = sc->sc_dien; 1403 } 1404 #endif 1405 } 1406 #ifdef DEBUG 1407 if (siop_debug & 1) 1408 printf ("siop_select: target %x cmd %02x ds %p\n", 1409 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1410 &sc->sc_nexus->ds); 1411 #endif 1412 1413 siop_start(sc, acb->xs->xs_periph->periph_target, 1414 acb->xs->xs_periph->periph_lun, 1415 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1416 1417 return; 1418 } 1419 1420 /* 1421 * 53C710 interrupt handler 1422 */ 1423 1424 void 1425 siopintr(register struct siop_softc *sc) 1426 { 1427 siop_regmap_p rp; 1428 register u_char istat, dstat, sstat0; 1429 int status; 1430 int s = splbio(); 1431 1432 istat = sc->sc_istat; 1433 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1434 splx(s); 1435 return; 1436 } 1437 1438 /* Got a valid interrupt on this device */ 1439 rp = sc->sc_siopp; 1440 dstat = sc->sc_dstat; 1441 sstat0 = sc->sc_sstat0; 1442 if (dstat & SIOP_DSTAT_SIR) 1443 sc->sc_intcode = rp->siop_dsps; 1444 sc->sc_istat = 0; 1445 #ifdef DEBUG 1446 if (siop_debug & 1) 1447 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1448 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1449 if (!sc->sc_active) { 1450 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1451 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1452 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1453 } 1454 #endif 1455 1456 #ifdef DEBUG 1457 if (siop_debug & 5) { 1458 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1459 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1460 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1461 rp->siop_dsps, rp->siop_sbcl, 1462 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1463 } 1464 #endif 1465 if (sc->sc_flags & SIOP_INTDEFER) { 1466 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1467 rp->siop_sien = sc->sc_sien; 1468 rp->siop_dien = sc->sc_dien; 1469 } 1470 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1471 #if 1 1472 if (status == 0xff) 1473 printf ("siopintr: status == 0xff\n"); 1474 #endif 1475 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1476 #if 0 1477 if (rp->siop_sbcl & SIOP_BSY) { 1478 printf ("%s: SCSI bus busy at completion", 1479 sc->sc_dev.dv_xname); 1480 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1481 sc->sc_nexus->xs->xs_periph->periph_target, 1482 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1483 rp->siop_dsp - sc->sc_scriptspa); 1484 } 1485 #endif 1486 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1487 sc->sc_nexus->stat[0] : -1); 1488 } 1489 } 1490 splx(s); 1491 } 1492 1493 /* 1494 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1495 * not be correct for other 53c710 boards. 1496 * 1497 */ 1498 void 1499 scsi_period_to_siop(struct siop_softc *sc, int target) 1500 { 1501 int period, offset, sxfer, sbcl = 0; 1502 #ifdef DEBUG_SYNC 1503 int i; 1504 #endif 1505 1506 period = sc->sc_nexus->msg[4]; 1507 offset = sc->sc_nexus->msg[5]; 1508 #ifdef DEBUG_SYNC 1509 sxfer = 0; 1510 if (offset <= SIOP_MAX_OFFSET) 1511 sxfer = offset; 1512 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1513 if (period <= sync_tab[i].p) { 1514 sxfer |= sync_tab[i].r & 0x70; 1515 sbcl = sync_tab[i].r & 0x03; 1516 break; 1517 } 1518 } 1519 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1520 #endif 1521 for (sbcl = 1; sbcl < 4; ++sbcl) { 1522 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1523 if (sxfer >= 0 && sxfer <= 7) 1524 break; 1525 } 1526 if (sbcl > 3) { 1527 printf("siop sync: unable to compute sync params for period %dns\n", 1528 period * 4); 1529 /* 1530 * XXX need to pick a value we can do and renegotiate 1531 */ 1532 sxfer = sbcl = 0; 1533 } else { 1534 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1535 offset : SIOP_MAX_OFFSET); 1536 #ifdef DEBUG_SYNC 1537 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1538 period * 4, sxfer, sbcl); 1539 printf(" actual period %dns\n", 1540 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1541 #endif 1542 } 1543 sc->sc_sync[target].sxfer = sxfer; 1544 sc->sc_sync[target].sbcl = sbcl; 1545 #ifdef DEBUG_SYNC 1546 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1547 #endif 1548 } 1549 1550 #ifdef DEBUG 1551 1552 #if SIOP_TRACE_SIZE 1553 void 1554 siop_dump_trace(void) 1555 { 1556 int i; 1557 1558 printf("siop trace: next index %d\n", siop_trix); 1559 i = siop_trix; 1560 do { 1561 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1562 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1563 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1564 } while (i != siop_trix); 1565 } 1566 #endif 1567 1568 void 1569 siop_dump_acb(struct siop_acb *acb) 1570 { 1571 u_char *b = (u_char *) &acb->cmd; 1572 int i; 1573 1574 printf("acb@%p ", acb); 1575 if (acb->xs == NULL) { 1576 printf("<unused>\n"); 1577 return; 1578 } 1579 printf("(%d:%d) flags %2x clen %2d cmd ", 1580 acb->xs->xs_periph->periph_target, 1581 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1582 for (i = acb->clen; i; --i) 1583 printf(" %02x", *b++); 1584 printf("\n"); 1585 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1586 acb->xs->datalen); 1587 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1588 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1589 } 1590 1591 void 1592 siop_dump(struct siop_softc *sc) 1593 { 1594 struct siop_acb *acb; 1595 siop_regmap_p rp = sc->sc_siopp; 1596 int s; 1597 int i; 1598 1599 s = splbio(); 1600 #if SIOP_TRACE_SIZE 1601 siop_dump_trace(); 1602 #endif 1603 printf("%s@%p regs %p istat %x\n", 1604 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1605 if ((acb = sc->free_list.tqh_first) > 0) { 1606 printf("Free list:\n"); 1607 while (acb) { 1608 siop_dump_acb(acb); 1609 acb = acb->chain.tqe_next; 1610 } 1611 } 1612 if ((acb = sc->ready_list.tqh_first) > 0) { 1613 printf("Ready list:\n"); 1614 while (acb) { 1615 siop_dump_acb(acb); 1616 acb = acb->chain.tqe_next; 1617 } 1618 } 1619 if ((acb = sc->nexus_list.tqh_first) > 0) { 1620 printf("Nexus list:\n"); 1621 while (acb) { 1622 siop_dump_acb(acb); 1623 acb = acb->chain.tqe_next; 1624 } 1625 } 1626 if (sc->sc_nexus) { 1627 printf("Nexus:\n"); 1628 siop_dump_acb(sc->sc_nexus); 1629 } 1630 for (i = 0; i < 8; ++i) { 1631 if (sc->sc_tinfo[i].cmds > 2) { 1632 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1633 i, sc->sc_tinfo[i].cmds, 1634 sc->sc_tinfo[i].dconns, 1635 sc->sc_tinfo[i].lubusy); 1636 } 1637 } 1638 splx(s); 1639 } 1640 #endif 1641
Indexes created Tue Sep 23 14:10:03 GMT 2025