siop.c revision 1.48
1 /* $NetBSD: siop.c,v 1.48 2003/04/01 21:26:32 thorpej 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 1.48 2003/04/01 21:26:32 thorpej 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 59 #include <uvm/uvm_extern.h> 60 61 #include <dev/scsipi/scsi_all.h> 62 #include <dev/scsipi/scsipi_all.h> 63 #include <dev/scsipi/scsiconf.h> 64 #include <machine/cpu.h> 65 #ifdef __m68k__ 66 #include <m68k/cacheops.h> 67 #endif 68 #include <amiga/amiga/custom.h> 69 #include <amiga/amiga/isr.h> 70 #include <amiga/dev/siopreg.h> 71 #include <amiga/dev/siopvar.h> 72 73 /* 74 * SCSI delays 75 * In u-seconds, primarily for state changes on the SPC. 76 */ 77 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 78 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 79 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 80 81 void siop_select(struct siop_softc *); 82 void siopabort(struct siop_softc *, siop_regmap_p, char *); 83 void sioperror(struct siop_softc *, siop_regmap_p, u_char); 84 void siopstart(struct siop_softc *); 85 int siop_checkintr(struct siop_softc *, u_char, u_char, u_char, int *); 86 void siopreset(struct siop_softc *); 87 void siopsetdelay(int); 88 void siop_scsidone(struct siop_acb *, int); 89 void siop_sched(struct siop_softc *); 90 void siop_poll(struct siop_softc *, struct siop_acb *); 91 void siopintr(struct siop_softc *); 92 void scsi_period_to_siop(struct siop_softc *, int); 93 void siop_start(struct siop_softc *, int, int, u_char *, int, u_char *, int); 94 void siop_dump_acb(struct siop_acb *); 95 96 /* 53C710 script */ 97 const 98 #include <amiga/dev/siop_script.out> 99 100 /* default to not inhibit sync negotiation on any drive */ 101 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 102 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 103 int siop_no_dma = 0; 104 105 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 106 107 int siop_cmd_wait = SCSI_CMD_WAIT; 108 int siop_data_wait = SCSI_DATA_WAIT; 109 int siop_init_wait = SCSI_INIT_WAIT; 110 111 #ifdef DEBUG_SYNC 112 /* 113 * sync period transfer lookup - only valid for 66Mhz clock 114 */ 115 static struct { 116 unsigned char p; /* period from sync request message */ 117 unsigned char r; /* siop_period << 4 | sbcl */ 118 } sync_tab[] = { 119 { 60/4, 0<<4 | 1}, 120 { 76/4, 1<<4 | 1}, 121 { 92/4, 2<<4 | 1}, 122 { 92/4, 0<<4 | 2}, 123 {108/4, 3<<4 | 1}, 124 {116/4, 1<<4 | 2}, 125 {120/4, 4<<4 | 1}, 126 {120/4, 0<<4 | 3}, 127 {136/4, 5<<4 | 1}, 128 {140/4, 2<<4 | 2}, 129 {152/4, 6<<4 | 1}, 130 {152/4, 1<<4 | 3}, 131 {164/4, 3<<4 | 2}, 132 {168/4, 7<<4 | 1}, 133 {180/4, 2<<4 | 3}, 134 {184/4, 4<<4 | 2}, 135 {208/4, 5<<4 | 2}, 136 {212/4, 3<<4 | 3}, 137 {232/4, 6<<4 | 2}, 138 {240/4, 4<<4 | 3}, 139 {256/4, 7<<4 | 2}, 140 {272/4, 5<<4 | 3}, 141 {300/4, 6<<4 | 3}, 142 {332/4, 7<<4 | 3} 143 }; 144 #endif 145 146 #ifdef DEBUG 147 /* 148 * 0x01 - full debug 149 * 0x02 - DMA chaining 150 * 0x04 - siopintr 151 * 0x08 - phase mismatch 152 * 0x10 - <not used> 153 * 0x20 - panic on unhandled exceptions 154 * 0x100 - disconnect/reselect 155 */ 156 int siop_debug = 0; 157 int siopsync_debug = 0; 158 int siopdma_hits = 0; 159 int siopdma_misses = 0; 160 int siopchain_ints = 0; 161 int siopstarts = 0; 162 int siopints = 0; 163 int siopphmm = 0; 164 #define SIOP_TRACE_SIZE 128 165 #define SIOP_TRACE(a,b,c,d) \ 166 siop_trbuf[siop_trix] = (a); \ 167 siop_trbuf[siop_trix+1] = (b); \ 168 siop_trbuf[siop_trix+2] = (c); \ 169 siop_trbuf[siop_trix+3] = (d); \ 170 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 171 u_char siop_trbuf[SIOP_TRACE_SIZE]; 172 int siop_trix; 173 void siop_dump(struct siop_softc *); 174 void siop_dump_trace(void); 175 #else 176 #define SIOP_TRACE(a,b,c,d) 177 #endif 178 179 180 /* 181 * default minphys routine for siop based controllers 182 */ 183 void 184 siop_minphys(struct buf *bp) 185 { 186 187 /* 188 * No max transfer at this level. 189 */ 190 minphys(bp); 191 } 192 193 /* 194 * used by specific siop controller 195 * 196 */ 197 void 198 siop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 199 void *arg) 200 { 201 struct scsipi_xfer *xs; 202 struct scsipi_periph *periph; 203 struct siop_acb *acb; 204 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 205 int flags, s; 206 207 switch (req) { 208 case ADAPTER_REQ_RUN_XFER: 209 xs = arg; 210 periph = xs->xs_periph; 211 flags = xs->xs_control; 212 213 /* XXXX ?? */ 214 if (flags & XS_CTL_DATA_UIO) 215 panic("siop: scsi data uio requested"); 216 217 /* XXXX ?? */ 218 if (sc->sc_nexus && flags & XS_CTL_POLL) 219 /* panic("siop_scsicmd: busy");*/ 220 printf("siop_scsicmd: busy\n"); 221 222 s = splbio(); 223 acb = sc->free_list.tqh_first; 224 if (acb) { 225 TAILQ_REMOVE(&sc->free_list, acb, chain); 226 } 227 splx(s); 228 229 #ifdef DIAGNOSTIC 230 /* 231 * This should never happen as we track the resources 232 * in the mid-layer. 233 */ 234 if (acb == NULL) { 235 scsipi_printaddr(periph); 236 printf("unable to allocate acb\n"); 237 panic("siop_scsipi_request"); 238 } 239 #endif 240 241 acb->flags = ACB_ACTIVE; 242 acb->xs = xs; 243 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 244 acb->clen = xs->cmdlen; 245 acb->daddr = xs->data; 246 acb->dleft = xs->datalen; 247 248 s = splbio(); 249 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 250 251 if (sc->sc_nexus == NULL) 252 siop_sched(sc); 253 254 splx(s); 255 256 if (flags & XS_CTL_POLL || siop_no_dma) 257 siop_poll(sc, acb); 258 return; 259 260 case ADAPTER_REQ_GROW_RESOURCES: 261 return; 262 263 case ADAPTER_REQ_SET_XFER_MODE: 264 return; 265 } 266 } 267 268 void 269 siop_poll(struct siop_softc *sc, struct siop_acb *acb) 270 { 271 siop_regmap_p rp = sc->sc_siopp; 272 struct scsipi_xfer *xs = acb->xs; 273 int i; 274 int status; 275 u_char istat; 276 u_char dstat; 277 u_char sstat0; 278 int s; 279 int to; 280 281 s = splbio(); 282 to = xs->timeout / 1000; 283 if (sc->nexus_list.tqh_first) 284 printf("%s: siop_poll called with disconnected device\n", 285 sc->sc_dev.dv_xname); 286 for (;;) { 287 /* use cmd_wait values? */ 288 i = 50000; 289 /* XXX spl0(); */ 290 while (((istat = rp->siop_istat) & 291 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 292 if (--i <= 0) { 293 #ifdef DEBUG 294 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 295 xs->xs_periph->periph_target, acb->cmd.opcode, 296 rp->siop_sbcl, rp->siop_dsp, 297 rp->siop_dsp - sc->sc_scriptspa, 298 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 299 #endif 300 i = 50000; 301 --to; 302 if (to <= 0) { 303 siopreset(sc); 304 return; 305 } 306 } 307 delay(20); 308 } 309 sstat0 = rp->siop_sstat0; 310 dstat = rp->siop_dstat; 311 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 312 if (acb != sc->sc_nexus) 313 printf("%s: siop_poll disconnected device completed\n", 314 sc->sc_dev.dv_xname); 315 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 316 sc->sc_flags &= ~SIOP_INTSOFF; 317 rp->siop_sien = sc->sc_sien; 318 rp->siop_dien = sc->sc_dien; 319 } 320 siop_scsidone(sc->sc_nexus, status); 321 } 322 323 if (xs->xs_status & XS_STS_DONE) 324 break; 325 } 326 splx(s); 327 } 328 329 /* 330 * start next command that's ready 331 */ 332 void 333 siop_sched(struct siop_softc *sc) 334 { 335 struct scsipi_periph *periph; 336 struct siop_acb *acb; 337 int i; 338 339 #ifdef DEBUG 340 if (sc->sc_nexus) { 341 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 342 sc->sc_dev.dv_xname, sc->sc_nexus, 343 sc->sc_nexus->xs->xs_periph->periph_target, 344 sc->ready_list.tqh_first, 345 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 346 return; 347 } 348 #endif 349 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 350 periph = acb->xs->xs_periph; 351 i = periph->periph_target; 352 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 353 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 354 355 TAILQ_REMOVE(&sc->ready_list, acb, chain); 356 sc->sc_nexus = acb; 357 periph = acb->xs->xs_periph; 358 ti = &sc->sc_tinfo[periph->periph_target]; 359 ti->lubusy |= (1 << periph->periph_lun); 360 break; 361 } 362 } 363 364 if (acb == NULL) { 365 #ifdef DEBUGXXX 366 printf("%s: siop_sched didn't find ready command\n", 367 sc->sc_dev.dv_xname); 368 #endif 369 return; 370 } 371 372 if (acb->xs->xs_control & XS_CTL_RESET) 373 siopreset(sc); 374 375 #if 0 376 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 377 #endif 378 ++sc->sc_active; 379 siop_select(sc); 380 } 381 382 void 383 siop_scsidone(struct siop_acb *acb, int stat) 384 { 385 struct scsipi_xfer *xs; 386 struct scsipi_periph *periph; 387 struct siop_softc *sc; 388 int dosched = 0; 389 390 if (acb == NULL || (xs = acb->xs) == NULL) { 391 #ifdef DIAGNOSTIC 392 printf("siop_scsidone: NULL acb or scsipi_xfer\n"); 393 #if defined(DEBUG) && defined(DDB) 394 Debugger(); 395 #endif 396 #endif 397 return; 398 } 399 periph = xs->xs_periph; 400 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev; 401 402 xs->status = stat; 403 xs->resid = 0; /* XXXX */ 404 405 if (xs->error == XS_NOERROR) { 406 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 407 xs->error = XS_BUSY; 408 } 409 410 /* 411 * Remove the ACB from whatever queue it's on. We have to do a bit of 412 * a hack to figure out which queue it's on. Note that it is *not* 413 * necessary to cdr down the ready queue, but we must cdr down the 414 * nexus queue and see if it's there, so we can mark the unit as no 415 * longer busy. This code is sickening, but it works. 416 */ 417 if (acb == sc->sc_nexus) { 418 sc->sc_nexus = NULL; 419 sc->sc_tinfo[periph->periph_target].lubusy &= 420 ~(1<<periph->periph_lun); 421 if (sc->ready_list.tqh_first) 422 dosched = 1; /* start next command */ 423 --sc->sc_active; 424 SIOP_TRACE('d','a',stat,0) 425 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 426 TAILQ_REMOVE(&sc->ready_list, acb, chain); 427 SIOP_TRACE('d','r',stat,0) 428 } else { 429 register struct siop_acb *acb2; 430 for (acb2 = sc->nexus_list.tqh_first; acb2; 431 acb2 = acb2->chain.tqe_next) 432 if (acb2 == acb) { 433 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 434 sc->sc_tinfo[periph->periph_target].lubusy 435 &= ~(1<<periph->periph_lun); 436 --sc->sc_active; 437 break; 438 } 439 if (acb2) 440 ; 441 else if (acb->chain.tqe_next) { 442 TAILQ_REMOVE(&sc->ready_list, acb, chain); 443 --sc->sc_active; 444 } else { 445 printf("%s: can't find matching acb\n", 446 sc->sc_dev.dv_xname); 447 #ifdef DDB 448 /* Debugger(); */ 449 #endif 450 } 451 SIOP_TRACE('d','n',stat,0); 452 } 453 /* Put it on the free list. */ 454 acb->flags = ACB_FREE; 455 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 456 457 sc->sc_tinfo[periph->periph_target].cmds++; 458 459 scsipi_done(xs); 460 461 if (dosched && sc->sc_nexus == NULL) 462 siop_sched(sc); 463 } 464 465 void 466 siopabort(register struct siop_softc *sc, siop_regmap_p rp, char *where) 467 { 468 #ifdef fix_this 469 int i; 470 #endif 471 472 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 473 sc->sc_dev.dv_xname, 474 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 475 476 if (sc->sc_active > 0) { 477 #ifdef TODO 478 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 479 WAIT_CIP (rp); 480 481 GET_SBIC_asr (rp, asr); 482 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 483 { 484 /* ok, get more drastic.. */ 485 486 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 487 delay(25); 488 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 489 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 490 491 return; 492 } 493 494 do 495 { 496 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 497 GET_SBIC_csr (rp, csr); 498 } 499 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 500 && (csr != SBIC_CSR_CMD_INVALID)); 501 #endif 502 503 /* lets just hope it worked.. */ 504 #ifdef fix_this 505 for (i = 0; i < 2; ++i) { 506 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 507 sc->sc_cur) { 508 printf ("siopabort: cleanup!\n"); 509 sc->sc_iob[i].sc_xs = NULL; 510 } 511 } 512 #endif /* fix_this */ 513 /* sc->sc_active = 0; */ 514 } 515 } 516 517 void 518 siopinitialize(struct siop_softc *sc) 519 { 520 int i; 521 u_int inhibit_sync; 522 extern u_long scsi_nosync; 523 extern int shift_nosync; 524 525 /* 526 * Need to check that scripts is on a long word boundary 527 * Also should verify that dev doesn't span non-contiguous 528 * physical pages. 529 */ 530 sc->sc_scriptspa = kvtop((caddr_t)scripts); 531 532 /* 533 * malloc sc_acb to ensure that DS is on a long word boundary. 534 */ 535 536 MALLOC(sc->sc_acb, struct siop_acb *, 537 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 538 if (sc->sc_acb == NULL) 539 panic("siopinitialize: ACB malloc failed!"); 540 541 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 542 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 543 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 544 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 545 if (sc->sc_minsync < 25) 546 sc->sc_minsync = 25; 547 if (sc->sc_clock_freq <= 25) { 548 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 549 sc->sc_tcp[0] = sc->sc_tcp[1]; 550 } else if (sc->sc_clock_freq <= 37) { 551 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 552 sc->sc_tcp[0] = sc->sc_tcp[2]; 553 } else if (sc->sc_clock_freq <= 50) { 554 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 555 sc->sc_tcp[0] = sc->sc_tcp[3]; 556 } else { 557 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 558 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 559 } 560 561 if (scsi_nosync) { 562 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 563 shift_nosync += 8; 564 #ifdef DEBUG 565 if (inhibit_sync) 566 printf("%s: Inhibiting synchronous transfer %02x\n", 567 sc->sc_dev.dv_xname, inhibit_sync); 568 #endif 569 for (i = 0; i < 8; ++i) 570 if (inhibit_sync & (1 << i)) 571 siop_inhibit_sync[i] = 1; 572 } 573 574 siopreset (sc); 575 } 576 577 void 578 siopreset(struct siop_softc *sc) 579 { 580 siop_regmap_p rp; 581 u_int i, s; 582 u_char dummy; 583 struct siop_acb *acb; 584 585 rp = sc->sc_siopp; 586 587 if (sc->sc_flags & SIOP_ALIVE) 588 siopabort(sc, rp, "reset"); 589 590 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 591 592 s = splbio(); 593 594 /* 595 * Reset the chip 596 * XXX - is this really needed? 597 */ 598 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 599 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 600 rp->siop_istat &= ~SIOP_ISTAT_RST; 601 /* 602 * Reset SCSI bus (do we really want this?) 603 */ 604 rp->siop_sien = 0; 605 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 606 delay(1); 607 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 608 609 /* 610 * Set up various chip parameters 611 */ 612 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 613 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 614 rp->siop_dcntl = sc->sc_dcntl; 615 rp->siop_dmode = 0x80; /* burst length = 4 */ 616 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 617 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 618 rp->siop_scid = 1 << sc->sc_channel.chan_id; 619 rp->siop_dwt = 0x00; 620 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 621 rp->siop_ctest7 |= sc->sc_ctest7; 622 623 /* will need to re-negotiate sync xfers */ 624 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 625 626 i = rp->siop_istat; 627 if (i & SIOP_ISTAT_SIP) 628 dummy = rp->siop_sstat0; 629 if (i & SIOP_ISTAT_DIP) 630 dummy = rp->siop_dstat; 631 632 splx (s); 633 634 delay (siop_reset_delay * 1000); 635 printf("siop id %d reset V%d\n", sc->sc_channel.chan_id, 636 rp->siop_ctest8 >> 4); 637 638 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 639 TAILQ_INIT(&sc->ready_list); 640 TAILQ_INIT(&sc->nexus_list); 641 TAILQ_INIT(&sc->free_list); 642 sc->sc_nexus = NULL; 643 acb = sc->sc_acb; 644 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 645 for (i = 0; i < SIOP_NACB; i++) { 646 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 647 acb++; 648 } 649 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 650 } else { 651 if (sc->sc_nexus != NULL) { 652 sc->sc_nexus->xs->error = XS_RESET; 653 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 654 } 655 while ((acb = sc->nexus_list.tqh_first) > 0) { 656 acb->xs->error = XS_RESET; 657 siop_scsidone(acb, acb->stat[0]); 658 } 659 } 660 661 sc->sc_flags |= SIOP_ALIVE; 662 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 663 /* enable SCSI and DMA interrupts */ 664 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 665 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 666 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 667 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 668 rp->siop_sien = sc->sc_sien; 669 rp->siop_dien = sc->sc_dien; 670 } 671 672 /* 673 * Setup Data Storage for 53C710 and start SCRIPTS processing 674 */ 675 676 void 677 siop_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, int clen, 678 u_char *buf, int len) 679 { 680 siop_regmap_p rp = sc->sc_siopp; 681 int nchain; 682 int count, tcount; 683 char *addr, *dmaend; 684 struct siop_acb *acb = sc->sc_nexus; 685 #ifdef DEBUG 686 int i; 687 #endif 688 689 #ifdef DEBUG 690 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 691 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 692 rp, &scripts, &acb->ds, sc->sc_active); 693 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 694 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 695 rp->siop_sien, rp->siop_dien); 696 #ifdef DDB 697 /*Debugger();*/ 698 #endif 699 } 700 #endif 701 acb->msgout[0] = MSG_IDENTIFY | lun; 702 if (siop_allow_disc[target] & 2 || 703 (siop_allow_disc[target] && len == 0)) 704 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 705 acb->status = 0; 706 acb->stat[0] = -1; 707 acb->msg[0] = -1; 708 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 709 acb->ds.idlen = 1; 710 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 711 acb->ds.cmdlen = clen; 712 acb->ds.cmdbuf = (char *) kvtop(cbuf); 713 acb->ds.stslen = 1; 714 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 715 acb->ds.msglen = 1; 716 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 717 acb->msg[1] = -1; 718 acb->ds.msginlen = 1; 719 acb->ds.extmsglen = 1; 720 acb->ds.synmsglen = 3; 721 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 722 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 723 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 724 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 725 726 /* 727 * Negotiate wide is the initial negotiation state; since the 53c710 728 * doesn't do wide transfers, just begin the synchronous transfer 729 * negotation here. 730 */ 731 if (sc->sc_sync[target].state == NEG_WIDE) { 732 if (siop_inhibit_sync[target]) { 733 sc->sc_sync[target].state = NEG_DONE; 734 sc->sc_sync[target].sbcl = 0; 735 sc->sc_sync[target].sxfer = 0; 736 #ifdef DEBUG 737 if (siopsync_debug) 738 printf ("Forcing target %d asynchronous\n", target); 739 #endif 740 } 741 else { 742 acb->msg[2] = -1; 743 acb->msgout[1] = MSG_EXT_MESSAGE; 744 acb->msgout[2] = 3; 745 acb->msgout[3] = MSG_SYNC_REQ; 746 #ifdef MAXTOR_SYNC_KLUDGE 747 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 748 #else 749 acb->msgout[4] = sc->sc_minsync; 750 #endif 751 acb->msgout[5] = SIOP_MAX_OFFSET; 752 acb->ds.idlen = 6; 753 sc->sc_sync[target].state = NEG_WAITS; 754 #ifdef DEBUG 755 if (siopsync_debug) 756 printf ("Sending sync request to target %d\n", target); 757 #endif 758 } 759 } 760 761 /* 762 * Build physical DMA addresses for scatter/gather I/O 763 */ 764 acb->iob_buf = buf; 765 acb->iob_len = len; 766 acb->iob_curbuf = acb->iob_curlen = 0; 767 nchain = 0; 768 count = len; 769 addr = buf; 770 dmaend = NULL; 771 while (count > 0) { 772 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 773 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET))) 774 tcount = count; 775 acb->ds.chain[nchain].datalen = tcount; 776 addr += tcount; 777 count -= tcount; 778 if (acb->ds.chain[nchain].databuf == dmaend) { 779 dmaend += acb->ds.chain[nchain].datalen; 780 acb->ds.chain[nchain].datalen = 0; 781 acb->ds.chain[--nchain].datalen += tcount; 782 #ifdef DEBUG 783 ++siopdma_hits; 784 #endif 785 } 786 else { 787 dmaend = acb->ds.chain[nchain].databuf + 788 acb->ds.chain[nchain].datalen; 789 acb->ds.chain[nchain].datalen = tcount; 790 #ifdef DEBUG 791 if (nchain) /* Don't count miss on first one */ 792 ++siopdma_misses; 793 #endif 794 } 795 ++nchain; 796 } 797 #ifdef DEBUG 798 if (nchain != 1 && len != 0 && siop_debug & 3) { 799 printf ("DMA chaining set: %d\n", nchain); 800 for (i = 0; i < nchain; ++i) { 801 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 802 acb->ds.chain[i].datalen); 803 } 804 } 805 #endif 806 807 /* push data cache for all data the 53c710 needs to access */ 808 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 809 dma_cachectl (cbuf, clen); 810 if (buf != NULL && len != 0) 811 dma_cachectl (buf, len); 812 #ifdef DEBUG 813 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 814 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 815 rp, &scripts, &acb->ds, sc->sc_active); 816 #ifdef DDB 817 /*Debugger();*/ 818 #endif 819 } 820 #endif 821 if (sc->nexus_list.tqh_first == NULL) { 822 if (rp->siop_istat & SIOP_ISTAT_CON) 823 printf("%s: siop_select while connected?\n", 824 sc->sc_dev.dv_xname); 825 rp->siop_temp = 0; 826 rp->siop_sbcl = sc->sc_sync[target].sbcl; 827 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 828 rp->siop_dsp = sc->sc_scriptspa; 829 SIOP_TRACE('s',1,0,0) 830 } else { 831 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 832 rp->siop_istat = SIOP_ISTAT_SIGP; 833 SIOP_TRACE('s',2,0,0); 834 } 835 else { 836 SIOP_TRACE('s',3,rp->siop_istat,0); 837 } 838 } 839 #ifdef DEBUG 840 ++siopstarts; 841 #endif 842 } 843 844 /* 845 * Process a DMA or SCSI interrupt from the 53C710 SIOP 846 */ 847 848 int 849 siop_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 850 u_char sstat0, int *status) 851 { 852 siop_regmap_p rp = sc->sc_siopp; 853 struct siop_acb *acb = sc->sc_nexus; 854 int target = 0; 855 int dfifo, dbc, sstat1; 856 857 dfifo = rp->siop_dfifo; 858 dbc = rp->siop_dbc0; 859 sstat1 = rp->siop_sstat1; 860 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 861 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 862 ; 863 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 864 #ifdef DEBUG 865 ++siopints; 866 #if 0 867 if (siop_debug & 0x100) { 868 DCIAS(&acb->stat[0]); /* XXX */ 869 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 870 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 871 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 872 acb->msg[0], acb->msg[1], acb->msg[2], 873 acb->msg[3], acb->msg[4], acb->msg[5]); 874 } 875 #endif 876 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 877 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 878 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 879 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 880 sc->sc_scriptspa + sizeof(scripts)); 881 printf(" istat %x dstat %x sstat0 %x\n", 882 istat, dstat, sstat0); 883 #ifdef DDB 884 Debugger(); 885 #endif 886 } 887 #endif 888 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 889 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 890 /* Normal completion status, or check condition */ 891 #ifdef DEBUG 892 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 893 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 894 kvtop((caddr_t)&acb->ds)); 895 panic("*** siop DSA invalid ***"); 896 } 897 #endif 898 target = acb->xs->xs_periph->periph_target; 899 if (sc->sc_sync[target].state == NEG_WAITS) { 900 if (acb->msg[1] == 0xff) 901 printf ("%s: target %d ignored sync request\n", 902 sc->sc_dev.dv_xname, target); 903 else if (acb->msg[1] == MSG_REJECT) 904 printf ("%s: target %d rejected sync request\n", 905 sc->sc_dev.dv_xname, target); 906 else 907 /* XXX - need to set sync transfer parameters */ 908 printf("%s: target %d (sync) %02x %02x %02x\n", 909 sc->sc_dev.dv_xname, target, acb->msg[1], 910 acb->msg[2], acb->msg[3]); 911 sc->sc_sync[target].state = NEG_DONE; 912 } 913 dma_cachectl(&acb->stat[0], 1); 914 *status = acb->stat[0]; 915 #ifdef DEBUG 916 if (rp->siop_sbcl & SIOP_BSY) { 917 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 918 rp, &scripts, &acb->ds);*/ 919 #ifdef DDB 920 /*Debugger();*/ 921 #endif 922 } 923 if (acb->msg[0] != 0x00) 924 printf("%s: message was not COMMAND COMPLETE: %x\n", 925 sc->sc_dev.dv_xname, acb->msg[0]); 926 #endif 927 if (sc->nexus_list.tqh_first) 928 rp->siop_dcntl |= SIOP_DCNTL_STD; 929 return 1; 930 } 931 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 932 target = acb->xs->xs_periph->periph_target; 933 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 934 acb->msg[3] == MSG_SYNC_REQ) { 935 #ifdef DEBUG 936 if (siopsync_debug) 937 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 938 acb->msg[0], acb->msg[1], acb->msg[2], 939 acb->msg[3], acb->msg[4], acb->msg[5]); 940 #endif 941 sc->sc_sync[target].sxfer = 0; 942 sc->sc_sync[target].sbcl = 0; 943 if (acb->msg[2] == 3 && 944 acb->msg[3] == MSG_SYNC_REQ && 945 acb->msg[5] != 0) { 946 #ifdef MAXTOR_KLUDGE 947 /* 948 * Kludge for my Maxtor XT8580S 949 * It accepts whatever we request, even 950 * though it won't work. So we ask for 951 * a short period than we can handle. If 952 * the device says it can do it, use 208ns. 953 * If the device says it can do less than 954 * 100ns, then we limit it to 100ns. 955 */ 956 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 957 #ifdef DEBUG 958 printf ("%d: target %d wanted %dns period\n", 959 sc->sc_dev.dv_xname, target, 960 acb->msg[4] * 4); 961 #endif 962 if (acb->msg[4] == 50 / 4) 963 acb->msg[4] = 208 / 4; 964 else 965 acb->msg[4] = 100 / 4; 966 } 967 #endif /* MAXTOR_KLUDGE */ 968 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 969 sc->sc_dev.dv_xname, target, 970 acb->msg[4] * 4, acb->msg[5]); 971 scsi_period_to_siop (sc, target); 972 } 973 rp->siop_sxfer = sc->sc_sync[target].sxfer; 974 rp->siop_sbcl = sc->sc_sync[target].sbcl; 975 if (sc->sc_sync[target].state == NEG_WAITS) { 976 sc->sc_sync[target].state = NEG_DONE; 977 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 978 return(0); 979 } 980 rp->siop_dcntl |= SIOP_DCNTL_STD; 981 sc->sc_sync[target].state = NEG_DONE; 982 return (0); 983 } 984 /* XXX - not SDTR message */ 985 } 986 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 987 #ifdef DEBUG 988 ++siopphmm; 989 if (acb == NULL) 990 printf("%s: Phase mismatch with no active command?\n", 991 sc->sc_dev.dv_xname); 992 #endif 993 if (acb->iob_len) { 994 int adjust; 995 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 996 if (sstat1 & SIOP_SSTAT1_ORF) 997 ++adjust; 998 if (sstat1 & SIOP_SSTAT1_OLF) 999 ++adjust; 1000 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1001 acb->iob_curlen += adjust; 1002 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1003 #ifdef DEBUG 1004 if (siop_debug & 0x100) { 1005 int i; 1006 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1007 acb->iob_curbuf, acb->iob_curlen, dfifo, 1008 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1009 if (acb->ds.chain[1].datalen) { 1010 for (i = 0; acb->ds.chain[i].datalen; ++i) 1011 printf("chain[%d] addr %p len %lx\n", 1012 i, acb->ds.chain[i].databuf, 1013 acb->ds.chain[i].datalen); 1014 } 1015 } 1016 #endif 1017 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1018 } 1019 #ifdef DEBUG 1020 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1021 if (siop_debug & 9) 1022 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1023 rp->siop_sbcl, 1024 rp->siop_dsp - sc->sc_scriptspa, 1025 *((long *)&rp->siop_dcmd)); 1026 #endif 1027 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1028 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1029 rp->siop_sbcl, rp->siop_dsp); 1030 #if defined(DEBUG) && defined(DDB) 1031 /*Debugger(); XXX is*/ 1032 #endif 1033 } 1034 switch (rp->siop_sbcl & 7) { 1035 case 0: /* data out */ 1036 case 1: /* data in */ 1037 case 2: /* status */ 1038 case 3: /* command */ 1039 case 6: /* message in */ 1040 case 7: /* message out */ 1041 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1042 break; 1043 default: 1044 goto bad_phase; 1045 } 1046 return 0; 1047 } 1048 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1049 #ifdef DEBUG 1050 if (acb == NULL) 1051 printf("%s: Select timeout with no active command?\n", 1052 sc->sc_dev.dv_xname); 1053 if (rp->siop_sbcl & SIOP_BSY) { 1054 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1055 rp, &scripts, &acb->ds); 1056 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1057 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1058 if (!(rp->siop_sbcl & SIOP_BSY)) { 1059 printf ("Yikes, it's not busy now!\n"); 1060 #if 0 1061 *status = -1; 1062 if (sc->nexus_list.tqh_first) 1063 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1064 return 1; 1065 #endif 1066 } 1067 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1068 return (0); 1069 #ifdef DDB 1070 Debugger(); 1071 #endif 1072 } 1073 #endif 1074 *status = -1; 1075 acb->xs->error = XS_SELTIMEOUT; 1076 if (sc->nexus_list.tqh_first) 1077 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1078 return 1; 1079 } 1080 if (acb) 1081 target = acb->xs->xs_periph->periph_target; 1082 else 1083 target = 7; 1084 if (sstat0 & SIOP_SSTAT0_UDC) { 1085 #ifdef DEBUG 1086 if (acb == NULL) 1087 printf("%s: Unexpected disconnect with no active command?\n", 1088 sc->sc_dev.dv_xname); 1089 printf ("%s: target %d disconnected unexpectedly\n", 1090 sc->sc_dev.dv_xname, target); 1091 #endif 1092 #if 0 1093 siopabort (sc, rp, "siopchkintr"); 1094 #endif 1095 *status = STS_BUSY; 1096 if (sc->nexus_list.tqh_first) 1097 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1098 return (acb != NULL); 1099 } 1100 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1101 rp->siop_dsps == 0xff02)) { 1102 #ifdef DEBUG 1103 if (siop_debug & 0x100) 1104 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", 1105 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1106 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1107 acb->iob_curbuf, acb->iob_curlen, 1108 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1109 #endif 1110 if (acb == NULL) { 1111 printf("%s: Disconnect with no active command?\n", 1112 sc->sc_dev.dv_xname); 1113 return (0); 1114 } 1115 /* 1116 * XXXX need to update iob_curbuf/iob_curlen to reflect 1117 * current data transferred. If device disconnected in 1118 * the middle of a DMA block, they should already be set 1119 * by the phase change interrupt. If the disconnect 1120 * occurs on a DMA block boundary, we have to figure out 1121 * which DMA block it was. 1122 */ 1123 if (acb->iob_len && rp->siop_temp) { 1124 int n = rp->siop_temp - sc->sc_scriptspa; 1125 1126 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1127 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1128 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1129 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1130 if (n < Ent_datain) 1131 n = (n - Ent_dataout) / 16; 1132 else 1133 n = (n - Ent_datain) / 16; 1134 if (n <= 0 && n > DMAMAXIO) 1135 printf("TEMP invalid %d\n", n); 1136 else { 1137 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1138 acb->iob_curlen = acb->ds.chain[n].datalen; 1139 } 1140 #ifdef DEBUG 1141 if (siop_debug & 0x100) { 1142 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1143 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1144 acb->iob_curlen); 1145 } 1146 #endif 1147 } 1148 /* 1149 * If data transfer was interrupted by disconnect, iob_curbuf 1150 * and iob_curlen should reflect the point of interruption. 1151 * Adjust the DMA chain so that the data transfer begins 1152 * at the appropriate place upon reselection. 1153 * XXX This should only be done on save data pointer message? 1154 */ 1155 if (acb->iob_curlen) { 1156 int i, j; 1157 1158 #ifdef DEBUG 1159 if (siop_debug & 0x100) 1160 printf ("%s: adjusting DMA chain\n", 1161 sc->sc_dev.dv_xname); 1162 if (rp->siop_dsps == 0xff02) 1163 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1164 sc->sc_dev.dv_xname, 1 << target); 1165 #endif 1166 /* XXX is: if (rp->siop_dsps != 0xff02) { */ 1167 /* not disconnected without save data ptr */ 1168 for (i = 0; i < DMAMAXIO; ++i) { 1169 if (acb->ds.chain[i].datalen == 0) 1170 break; 1171 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1172 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1173 acb->ds.chain[i].datalen)) 1174 break; 1175 } 1176 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1177 printf("couldn't find saved data pointer: "); 1178 printf("curbuf %lx curlen %lx i %d\n", 1179 acb->iob_curbuf, acb->iob_curlen, i); 1180 #ifdef DDB 1181 Debugger(); 1182 #endif 1183 } 1184 /* XXX is: } */ 1185 #ifdef DEBUG 1186 if (siop_debug & 0x100) 1187 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1188 acb->ds.chain[0].databuf, 1189 acb->ds.chain[0].datalen, 1190 acb->iob_curbuf, 1191 acb->iob_curlen); 1192 #endif 1193 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1194 acb->ds.chain[0].datalen = acb->iob_curlen; 1195 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1196 #ifdef DEBUG 1197 if (siop_debug & 0x100) 1198 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1199 acb->ds.chain[j].databuf, 1200 acb->ds.chain[j].datalen, 1201 acb->ds.chain[i].databuf, 1202 acb->ds.chain[i].datalen); 1203 #endif 1204 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1205 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1206 } 1207 if (j < DMAMAXIO) 1208 acb->ds.chain[j].datalen = 0; 1209 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1210 } 1211 ++sc->sc_tinfo[target].dconns; 1212 /* 1213 * add nexus to waiting list 1214 * clear nexus 1215 * try to start another command for another target/lun 1216 */ 1217 acb->status = sc->sc_flags & SIOP_INTSOFF; 1218 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1219 sc->sc_nexus = NULL; /* no current device */ 1220 /* start script to wait for reselect */ 1221 if (sc->sc_nexus == NULL) 1222 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1223 /* XXXX start another command ? */ 1224 if (sc->ready_list.tqh_first) 1225 siop_sched(sc); 1226 return (0); 1227 } 1228 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1229 int reselid = rp->siop_scratch & 0x7f; 1230 int reselun = rp->siop_sfbr & 0x07; 1231 1232 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1233 #ifdef DEBUG 1234 if (siop_debug & 0x100) 1235 printf ("%s: target ID %02x reselected dsps %lx\n", 1236 sc->sc_dev.dv_xname, reselid, 1237 rp->siop_dsps); 1238 if ((rp->siop_sfbr & 0x80) == 0) 1239 printf("%s: Reselect message in was not identify: %x\n", 1240 sc->sc_dev.dv_xname, rp->siop_sfbr); 1241 #endif 1242 if (sc->sc_nexus) { 1243 #ifdef DEBUG 1244 if (siop_debug & 0x100) 1245 printf ("%s: reselect ID %02x w/active\n", 1246 sc->sc_dev.dv_xname, reselid); 1247 #endif 1248 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1249 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1250 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1251 --sc->sc_active; 1252 } 1253 /* 1254 * locate acb of reselecting device 1255 * set sc->sc_nexus to acb 1256 */ 1257 for (acb = sc->nexus_list.tqh_first; acb; 1258 acb = acb->chain.tqe_next) { 1259 if (reselid != (acb->ds.scsi_addr >> 16) || 1260 reselun != (acb->msgout[0] & 0x07)) 1261 continue; 1262 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1263 sc->sc_nexus = acb; 1264 sc->sc_flags |= acb->status; 1265 acb->status = 0; 1266 DCIAS(kvtop(&acb->stat[0])); 1267 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1268 rp->siop_sxfer = 1269 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1270 rp->siop_sbcl = 1271 sc->sc_sync[acb->xs->xs_periph->periph_target].sbcl; 1272 break; 1273 } 1274 if (acb == NULL) { 1275 printf("%s: target ID %02x reselect nexus_list %p\n", 1276 sc->sc_dev.dv_xname, reselid, 1277 sc->nexus_list.tqh_first); 1278 panic("unable to find reselecting device"); 1279 } 1280 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1281 rp->siop_temp = 0; 1282 rp->siop_dcntl |= SIOP_DCNTL_STD; 1283 return (0); 1284 } 1285 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1286 #ifdef DEBUG 1287 u_short ctest2 = rp->siop_ctest2; 1288 1289 /* reselect was interrupted (by Sig_P or select) */ 1290 if (siop_debug & 0x100 || 1291 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1292 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1293 sc->sc_dev.dv_xname, rp->siop_scntl1, 1294 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1295 #endif 1296 /* XXX assumes it was not select */ 1297 if (sc->sc_nexus == NULL) { 1298 #ifdef DEBUG 1299 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1300 sc->sc_dev.dv_xname); 1301 #if 0 1302 siop_dump(sc); 1303 #ifdef DDB 1304 Debugger(); 1305 #endif 1306 #endif 1307 #endif 1308 rp->siop_dcntl |= SIOP_DCNTL_STD; 1309 return(0); 1310 } 1311 target = sc->sc_nexus->xs->xs_periph->periph_target; 1312 rp->siop_temp = 0; 1313 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1314 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1315 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1316 rp->siop_dsp = sc->sc_scriptspa; 1317 return (0); 1318 } 1319 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1320 if (acb == NULL) 1321 printf("%s: Bad message-in with no active command?\n", 1322 sc->sc_dev.dv_xname); 1323 /* Unrecognized message in byte */ 1324 dma_cachectl (&acb->msg[1],1); 1325 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1326 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1327 /* what should be done here? */ 1328 DCIAS(kvtop(&acb->msg[1])); 1329 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1330 return (0); 1331 } 1332 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1333 /* Status phase wasn't followed by message in phase? */ 1334 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1335 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1336 if (rp->siop_sbcl == 0xa7) { 1337 /* It is now, just continue the script? */ 1338 rp->siop_dcntl |= SIOP_DCNTL_STD; 1339 return (0); 1340 } 1341 } 1342 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1343 dma_cachectl (&acb->stat[0], 1); 1344 dma_cachectl (&acb->msg[0], 1); 1345 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1346 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1347 rp->siop_sbcl); 1348 siopreset (sc); 1349 *status = -1; 1350 return 0; /* siopreset has cleaned up */ 1351 } 1352 if (sstat0 & SIOP_SSTAT0_SGE) 1353 printf ("SIOP: SCSI Gross Error\n"); 1354 if (sstat0 & SIOP_SSTAT0_PAR) 1355 printf ("SIOP: Parity Error\n"); 1356 if (dstat & SIOP_DSTAT_IID) 1357 printf ("SIOP: Invalid instruction detected\n"); 1358 bad_phase: 1359 /* 1360 * temporary panic for unhandled conditions 1361 * displays various things about the 53C710 status and registers 1362 * then panics. 1363 * XXXX need to clean this up to print out the info, reset, and continue 1364 */ 1365 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1366 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1367 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1368 *((long *)&rp->siop_dcmd)); 1369 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1370 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1371 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1372 #ifdef DEBUG 1373 if (siop_debug & 0x20) 1374 panic("siopchkintr: **** temp ****"); 1375 #endif 1376 #ifdef DDB 1377 Debugger (); 1378 #endif 1379 siopreset (sc); /* hard reset */ 1380 *status = -1; 1381 return 0; /* siopreset cleaned up */ 1382 } 1383 1384 void 1385 siop_select(struct siop_softc *sc) 1386 { 1387 siop_regmap_p rp; 1388 struct siop_acb *acb = sc->sc_nexus; 1389 1390 #ifdef DEBUG 1391 if (siop_debug & 1) 1392 printf ("%s: select ", sc->sc_dev.dv_xname); 1393 #endif 1394 1395 rp = sc->sc_siopp; 1396 if (acb->xs->xs_control & XS_CTL_POLL || siop_no_dma) { 1397 sc->sc_flags |= SIOP_INTSOFF; 1398 sc->sc_flags &= ~SIOP_INTDEFER; 1399 if ((rp->siop_istat & 0x08) == 0) { 1400 rp->siop_sien = 0; 1401 rp->siop_dien = 0; 1402 } 1403 #if 0 1404 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1405 sc->sc_flags &= ~SIOP_INTSOFF; 1406 if ((rp->siop_istat & 0x08) == 0) { 1407 rp->siop_sien = sc->sc_sien; 1408 rp->siop_dien = sc->sc_dien; 1409 } 1410 #endif 1411 } 1412 #ifdef DEBUG 1413 if (siop_debug & 1) 1414 printf ("siop_select: target %x cmd %02x ds %p\n", 1415 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1416 &sc->sc_nexus->ds); 1417 #endif 1418 1419 siop_start(sc, acb->xs->xs_periph->periph_target, 1420 acb->xs->xs_periph->periph_lun, 1421 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1422 1423 return; 1424 } 1425 1426 /* 1427 * 53C710 interrupt handler 1428 */ 1429 1430 void 1431 siopintr(register struct siop_softc *sc) 1432 { 1433 siop_regmap_p rp; 1434 register u_char istat, dstat, sstat0; 1435 int status; 1436 int s = splbio(); 1437 1438 istat = sc->sc_istat; 1439 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1440 splx(s); 1441 return; 1442 } 1443 1444 /* Got a valid interrupt on this device */ 1445 rp = sc->sc_siopp; 1446 dstat = sc->sc_dstat; 1447 sstat0 = sc->sc_sstat0; 1448 if (dstat & SIOP_DSTAT_SIR) 1449 sc->sc_intcode = rp->siop_dsps; 1450 sc->sc_istat = 0; 1451 #ifdef DEBUG 1452 if (siop_debug & 1) 1453 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1454 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1455 if (!sc->sc_active) { 1456 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1457 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1458 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1459 } 1460 #endif 1461 1462 #ifdef DEBUG 1463 if (siop_debug & 5) { 1464 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1465 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1466 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1467 rp->siop_dsps, rp->siop_sbcl, 1468 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1469 } 1470 #endif 1471 if (sc->sc_flags & SIOP_INTDEFER) { 1472 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1473 rp->siop_sien = sc->sc_sien; 1474 rp->siop_dien = sc->sc_dien; 1475 } 1476 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1477 #if 1 1478 if (status == 0xff) 1479 printf ("siopintr: status == 0xff\n"); 1480 #endif 1481 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1482 #if 0 1483 if (rp->siop_sbcl & SIOP_BSY) { 1484 printf ("%s: SCSI bus busy at completion", 1485 sc->sc_dev.dv_xname); 1486 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1487 sc->sc_nexus->xs->xs_periph->periph_target, 1488 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1489 rp->siop_dsp - sc->sc_scriptspa); 1490 } 1491 #endif 1492 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1493 sc->sc_nexus->stat[0] : -1); 1494 } 1495 } 1496 splx(s); 1497 } 1498 1499 /* 1500 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1501 * not be correct for other 53c710 boards. 1502 * 1503 */ 1504 void 1505 scsi_period_to_siop(struct siop_softc *sc, int target) 1506 { 1507 int period, offset, sxfer, sbcl = 0; 1508 #ifdef DEBUG_SYNC 1509 int i; 1510 #endif 1511 1512 period = sc->sc_nexus->msg[4]; 1513 offset = sc->sc_nexus->msg[5]; 1514 #ifdef DEBUG_SYNC 1515 sxfer = 0; 1516 if (offset <= SIOP_MAX_OFFSET) 1517 sxfer = offset; 1518 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1519 if (period <= sync_tab[i].p) { 1520 sxfer |= sync_tab[i].r & 0x70; 1521 sbcl = sync_tab[i].r & 0x03; 1522 break; 1523 } 1524 } 1525 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1526 #endif 1527 for (sbcl = 1; sbcl < 4; ++sbcl) { 1528 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1529 if (sxfer >= 0 && sxfer <= 7) 1530 break; 1531 } 1532 if (sbcl > 3) { 1533 printf("siop sync: unable to compute sync params for period %dns\n", 1534 period * 4); 1535 /* 1536 * XXX need to pick a value we can do and renegotiate 1537 */ 1538 sxfer = sbcl = 0; 1539 } else { 1540 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1541 offset : SIOP_MAX_OFFSET); 1542 #ifdef DEBUG_SYNC 1543 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1544 period * 4, sxfer, sbcl); 1545 printf(" actual period %dns\n", 1546 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1547 #endif 1548 } 1549 sc->sc_sync[target].sxfer = sxfer; 1550 sc->sc_sync[target].sbcl = sbcl; 1551 #ifdef DEBUG_SYNC 1552 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1553 #endif 1554 } 1555 1556 #ifdef DEBUG 1557 1558 #if SIOP_TRACE_SIZE 1559 void 1560 siop_dump_trace(void) 1561 { 1562 int i; 1563 1564 printf("siop trace: next index %d\n", siop_trix); 1565 i = siop_trix; 1566 do { 1567 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1568 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1569 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1570 } while (i != siop_trix); 1571 } 1572 #endif 1573 1574 void 1575 siop_dump_acb(struct siop_acb *acb) 1576 { 1577 u_char *b = (u_char *) &acb->cmd; 1578 int i; 1579 1580 printf("acb@%p ", acb); 1581 if (acb->xs == NULL) { 1582 printf("<unused>\n"); 1583 return; 1584 } 1585 printf("(%d:%d) flags %2x clen %2d cmd ", 1586 acb->xs->xs_periph->periph_target, 1587 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1588 for (i = acb->clen; i; --i) 1589 printf(" %02x", *b++); 1590 printf("\n"); 1591 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1592 acb->xs->datalen); 1593 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1594 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1595 } 1596 1597 void 1598 siop_dump(struct siop_softc *sc) 1599 { 1600 struct siop_acb *acb; 1601 siop_regmap_p rp = sc->sc_siopp; 1602 int s; 1603 int i; 1604 1605 s = splbio(); 1606 #if SIOP_TRACE_SIZE 1607 siop_dump_trace(); 1608 #endif 1609 printf("%s@%p regs %p istat %x\n", 1610 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1611 if ((acb = sc->free_list.tqh_first) > 0) { 1612 printf("Free list:\n"); 1613 while (acb) { 1614 siop_dump_acb(acb); 1615 acb = acb->chain.tqe_next; 1616 } 1617 } 1618 if ((acb = sc->ready_list.tqh_first) > 0) { 1619 printf("Ready list:\n"); 1620 while (acb) { 1621 siop_dump_acb(acb); 1622 acb = acb->chain.tqe_next; 1623 } 1624 } 1625 if ((acb = sc->nexus_list.tqh_first) > 0) { 1626 printf("Nexus list:\n"); 1627 while (acb) { 1628 siop_dump_acb(acb); 1629 acb = acb->chain.tqe_next; 1630 } 1631 } 1632 if (sc->sc_nexus) { 1633 printf("Nexus:\n"); 1634 siop_dump_acb(sc->sc_nexus); 1635 } 1636 for (i = 0; i < 8; ++i) { 1637 if (sc->sc_tinfo[i].cmds > 2) { 1638 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1639 i, sc->sc_tinfo[i].cmds, 1640 sc->sc_tinfo[i].dconns, 1641 sc->sc_tinfo[i].lubusy); 1642 } 1643 } 1644 splx(s); 1645 } 1646 #endif 1647
Indexes created Wed Sep 24 05:09:52 GMT 2025