siop2.c revision 1.30.28.2
1 /* $NetBSD: siop2.c,v 1.30.28.2 2009/04/28 07:33:40 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Van Jacobson of Lawrence Berkeley Laboratory. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)siop.c 7.5 (Berkeley) 5/4/91 35 */ 36 37 /* 38 * Copyright (c) 1994,1998 Michael L. Hitch 39 * 40 * This code is derived from software contributed to Berkeley by 41 * Van Jacobson of Lawrence Berkeley Laboratory. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 55 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 56 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 57 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 61 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 * @(#)siop.c 7.5 (Berkeley) 5/4/91 64 */ 65 66 /* 67 * AMIGA 53C720/770 scsi adaptor driver 68 */ 69 70 #include "opt_ddb.h" 71 72 #include <sys/cdefs.h> 73 __KERNEL_RCSID(0, "$NetBSD: siop2.c,v 1.30.28.2 2009/04/28 07:33:40 skrll Exp $"); 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/callout.h> 78 #include <sys/kernel.h> 79 #include <sys/device.h> 80 #include <sys/disklabel.h> 81 #include <sys/buf.h> 82 #include <sys/malloc.h> 83 84 #include <uvm/uvm_extern.h> 85 86 #include <dev/scsipi/scsi_all.h> 87 #include <dev/scsipi/scsipi_all.h> 88 #include <dev/scsipi/scsiconf.h> 89 #include <machine/cpu.h> 90 #ifdef __m68k__ 91 #include <m68k/include/cacheops.h> 92 #endif 93 #include <amiga/amiga/custom.h> 94 #include <amiga/amiga/isr.h> 95 96 #define ARCH_720 97 98 #include <amiga/dev/siopreg.h> 99 #include <amiga/dev/siopvar.h> 100 101 /* 102 * SCSI delays 103 * In u-seconds, primarily for state changes on the SPC. 104 */ 105 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 106 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 107 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 108 109 void siopng_select(struct siop_softc *); 110 void siopngabort(struct siop_softc *, siop_regmap_p, const char *); 111 void siopngerror(struct siop_softc *, siop_regmap_p, u_char); 112 int siopng_checkintr(struct siop_softc *, u_char, u_char, u_short, int *); 113 void siopngreset(struct siop_softc *); 114 void siopngsetdelay(int); 115 void siopng_scsidone(struct siop_acb *, int); 116 void siopng_timeout(void *); 117 void siopng_sched(struct siop_softc *); 118 void siopng_poll(struct siop_softc *, struct siop_acb *); 119 void siopngintr(struct siop_softc *); 120 void scsi_period_to_siopng(struct siop_softc *, int); 121 void siopng_start(struct siop_softc *, int, int, u_char *, int, u_char *, int); 122 void siopng_dump_acb(struct siop_acb *); 123 124 /* 53C720/770 script */ 125 126 #include <amiga/dev/siop2_script.out> 127 128 /* default to not inhibit sync negotiation on any drive */ 129 u_char siopng_inhibit_sync[16] = { 130 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 131 }; /* initialize, so patchable */ 132 133 u_char siopng_inhibit_wide[16] = { 134 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 135 }; /* initialize, so patchable */ 136 137 u_char siopng_allow_disc[16] = { 138 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 139 }; 140 141 int siopng_no_dma = 0; 142 143 int siopng_reset_delay = 250; /* delay after reset, in milleseconds */ 144 145 int siopng_cmd_wait = SCSI_CMD_WAIT; 146 int siopng_data_wait = SCSI_DATA_WAIT; 147 int siopng_init_wait = SCSI_INIT_WAIT; 148 149 #define DEBUG_SYNC 150 151 #ifdef DEBUG 152 /* 153 * 0x01 - full debug 154 * 0x02 - DMA chaining 155 * 0x04 - siopngintr 156 * 0x08 - phase mismatch 157 * 0x10 - <not used> 158 * 0x20 - panic on unhandled exceptions 159 * 0x100 - disconnect/reselect 160 */ 161 int siopng_debug = 0; 162 int siopngsync_debug = 0; 163 int siopngdma_hits = 0; 164 int siopngdma_misses = 0; 165 int siopngchain_ints = 0; 166 int siopngstarts = 0; 167 int siopngints = 0; 168 int siopngphmm = 0; 169 #define SIOP_TRACE_SIZE 128 170 #define SIOP_TRACE(a,b,c,d) \ 171 siopng_trbuf[siopng_trix] = (a); \ 172 siopng_trbuf[siopng_trix+1] = (b); \ 173 siopng_trbuf[siopng_trix+2] = (c); \ 174 siopng_trbuf[siopng_trix+3] = (d); \ 175 siopng_trix = (siopng_trix + 4) & (SIOP_TRACE_SIZE - 1); 176 u_char siopng_trbuf[SIOP_TRACE_SIZE]; 177 int siopng_trix; 178 void siopng_dump(struct siop_softc *); 179 void siopng_dump_trace(void); 180 #else 181 #define SIOP_TRACE(a,b,c,d) 182 #endif 183 184 185 static const char *siopng_chips[] = { 186 "720", "720SE", "770", "0x3", 187 "810A", "0x5", "0x6", "0x7", 188 "0x8", "0x9", "0xA", "0xB", 189 "0xC", "0xD", "0xE", "0xF", 190 }; 191 192 /* 193 * default minphys routine for siopng based controllers 194 */ 195 void 196 siopng_minphys(struct buf *bp) 197 { 198 199 /* 200 * No max transfer at this level. 201 */ 202 minphys(bp); 203 } 204 205 /* 206 * used by specific siopng controller 207 * 208 */ 209 void 210 siopng_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 211 void *arg) 212 { 213 struct scsipi_xfer *xs; 214 struct scsipi_periph *periph; 215 struct siop_acb *acb; 216 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 217 int flags, s; 218 219 switch (req) { 220 case ADAPTER_REQ_RUN_XFER: 221 xs = arg; 222 periph = xs->xs_periph; 223 flags = xs->xs_control; 224 225 /* XXXX ?? */ 226 if (flags & XS_CTL_DATA_UIO) 227 panic("siopng: scsi data uio requested"); 228 229 /* XXXX ?? */ 230 if (sc->sc_nexus && flags & XS_CTL_POLL) 231 /* panic("siopng_scsicmd: busy");*/ 232 printf("siopng_scsicmd: busy\n"); 233 234 s = splbio(); 235 acb = sc->free_list.tqh_first; 236 if (acb) { 237 TAILQ_REMOVE(&sc->free_list, acb, chain); 238 } 239 splx(s); 240 241 #ifdef DIAGNOSTIC 242 /* 243 * This should never happen as we track the resources 244 * in the mid-layer. 245 */ 246 if (acb == NULL) { 247 scsipi_printaddr(periph); 248 printf("unable to allocate acb\n"); 249 panic("siopng_scsipi_request"); 250 } 251 #endif 252 acb->flags = ACB_ACTIVE; 253 acb->xs = xs; 254 memcpy( &acb->cmd, xs->cmd, xs->cmdlen); 255 acb->clen = xs->cmdlen; 256 acb->daddr = xs->data; 257 acb->dleft = xs->datalen; 258 259 s = splbio(); 260 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 261 262 if (sc->sc_nexus == NULL) 263 siopng_sched(sc); 264 265 splx(s); 266 267 if (flags & XS_CTL_POLL || siopng_no_dma) 268 siopng_poll(sc, acb); 269 return; 270 271 case ADAPTER_REQ_GROW_RESOURCES: 272 return; 273 274 case ADAPTER_REQ_SET_XFER_MODE: 275 return; 276 } 277 } 278 279 void 280 siopng_poll(struct siop_softc *sc, struct siop_acb *acb) 281 { 282 siop_regmap_p rp = sc->sc_siopp; 283 struct scsipi_xfer *xs = acb->xs; 284 int i; 285 int status; 286 u_char istat; 287 u_char dstat; 288 u_short sist; 289 int s; 290 int to; 291 292 s = splbio(); 293 to = xs->timeout / 1000; 294 if (sc->nexus_list.tqh_first) 295 printf("%s: siopng_poll called with disconnected device\n", 296 sc->sc_dev.dv_xname); 297 for (;;) { 298 /* use cmd_wait values? */ 299 i = 50000; 300 /* XXX spl0(); */ 301 while (((istat = rp->siop_istat) & 302 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 303 if (--i <= 0) { 304 #ifdef DEBUG 305 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 306 xs->xs_periph->periph_target, acb->cmd.opcode, 307 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp, 308 rp->siop_dsp - sc->sc_scriptspa, 309 *((volatile long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 310 #endif 311 i = 50000; 312 --to; 313 if (to <= 0) { 314 siopngreset(sc); 315 return; 316 } 317 } 318 delay(20); 319 } 320 sist = rp->siop_sist; 321 dstat = rp->siop_dstat; 322 if (siopng_checkintr(sc, istat, dstat, sist, &status)) { 323 if (acb != sc->sc_nexus) 324 printf("%s: siopng_poll disconnected device completed\n", 325 sc->sc_dev.dv_xname); 326 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 327 sc->sc_flags &= ~SIOP_INTSOFF; 328 rp->siop_sien = sc->sc_sien; 329 rp->siop_dien = sc->sc_dien; 330 } 331 siopng_scsidone(sc->sc_nexus, status); 332 } 333 if (xs->xs_status & XS_STS_DONE) 334 break; 335 } 336 splx(s); 337 } 338 339 /* 340 * start next command that's ready 341 */ 342 void 343 siopng_sched(struct siop_softc *sc) 344 { 345 struct scsipi_periph *periph; 346 struct siop_acb *acb; 347 int i; 348 349 #ifdef DEBUG 350 if (sc->sc_nexus) { 351 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n", 352 sc->sc_dev.dv_xname, sc->sc_nexus, 353 sc->sc_nexus->xs->xs_periph->periph_target, 354 sc->ready_list.tqh_first, 355 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 356 return; 357 } 358 #endif 359 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 360 periph = acb->xs->xs_periph; 361 i = periph->periph_target; 362 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 363 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 364 365 TAILQ_REMOVE(&sc->ready_list, acb, chain); 366 sc->sc_nexus = acb; 367 periph = acb->xs->xs_periph; 368 ti = &sc->sc_tinfo[periph->periph_target]; 369 ti->lubusy |= (1 << periph->periph_lun); 370 break; 371 } 372 } 373 374 if (acb == NULL) { 375 #ifdef DEBUGXXX 376 printf("%s: siopng_sched didn't find ready command\n", 377 sc->sc_dev.dv_xname); 378 #endif 379 return; 380 } 381 382 if (acb->xs->xs_control & XS_CTL_RESET) 383 siopngreset(sc); 384 385 #if 0 386 acb->cmd.bytes[0] |= periph->periph_lun << 5; /* XXXX */ 387 #endif 388 ++sc->sc_active; 389 siopng_select(sc); 390 } 391 392 void 393 siopng_scsidone(struct siop_acb *acb, int stat) 394 { 395 struct scsipi_xfer *xs; 396 struct scsipi_periph *periph; 397 struct siop_softc *sc; 398 int dosched = 0; 399 400 if (acb == NULL || (xs = acb->xs) == NULL) { 401 #ifdef DIAGNOSTIC 402 printf("siopng_scsidone: NULL acb or scsipi_xfer\n"); 403 #if defined(DEBUG) && defined(DDB) 404 Debugger(); 405 #endif 406 #endif 407 return; 408 } 409 410 callout_stop(&xs->xs_callout); 411 412 periph = xs->xs_periph; 413 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev; 414 415 xs->status = stat; 416 xs->resid = 0; /* XXXX */ 417 418 if (xs->error == XS_NOERROR) { 419 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 420 xs->error = XS_BUSY; 421 } 422 423 /* 424 * Remove the ACB from whatever queue it's on. We have to do a bit of 425 * a hack to figure out which queue it's on. Note that it is *not* 426 * necessary to cdr down the ready queue, but we must cdr down the 427 * nexus queue and see if it's there, so we can mark the unit as no 428 * longer busy. This code is sickening, but it works. 429 */ 430 if (acb == sc->sc_nexus) { 431 sc->sc_nexus = NULL; 432 sc->sc_tinfo[periph->periph_target].lubusy &= 433 ~(1<<periph->periph_lun); 434 if (sc->ready_list.tqh_first) 435 dosched = 1; /* start next command */ 436 --sc->sc_active; 437 SIOP_TRACE('d','a',stat,0) 438 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 439 TAILQ_REMOVE(&sc->ready_list, acb, chain); 440 SIOP_TRACE('d','r',stat,0) 441 } else { 442 register struct siop_acb *acb2; 443 for (acb2 = sc->nexus_list.tqh_first; acb2; 444 acb2 = acb2->chain.tqe_next) 445 if (acb2 == acb) { 446 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 447 sc->sc_tinfo[periph->periph_target].lubusy 448 &= ~(1<<periph->periph_lun); 449 --sc->sc_active; 450 break; 451 } 452 if (acb2) 453 ; 454 else if (acb->chain.tqe_next) { 455 TAILQ_REMOVE(&sc->ready_list, acb, chain); 456 --sc->sc_active; 457 } else { 458 printf("%s: can't find matching acb\n", 459 sc->sc_dev.dv_xname); 460 #ifdef DDB 461 /* Debugger(); */ 462 #endif 463 } 464 SIOP_TRACE('d','n',stat,0); 465 } 466 /* Put it on the free list. */ 467 acb->flags = ACB_FREE; 468 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 469 470 sc->sc_tinfo[periph->periph_target].cmds++; 471 472 scsipi_done(xs); 473 474 if (dosched && sc->sc_nexus == NULL) 475 siopng_sched(sc); 476 } 477 478 void 479 siopngabort(register struct siop_softc *sc, siop_regmap_p rp, const char *where) 480 { 481 #ifdef fix_this 482 int i; 483 #endif 484 485 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n", 486 sc->sc_dev.dv_xname, 487 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist, 488 rp->siop_sien, rp->siop_sbcl); 489 siopng_dump_registers(sc); 490 491 if (sc->sc_active > 0) { 492 #ifdef TODO 493 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 494 WAIT_CIP (rp); 495 496 GET_SBIC_asr (rp, asr); 497 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 498 { 499 /* ok, get more drastic.. */ 500 501 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 502 delay(25); 503 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 504 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 505 506 return; 507 } 508 509 do 510 { 511 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 512 GET_SBIC_csr (rp, csr); 513 } 514 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 515 && (csr != SBIC_CSR_CMD_INVALID)); 516 #endif 517 518 /* lets just hope it worked.. */ 519 #ifdef fix_this 520 for (i = 0; i < 2; ++i) { 521 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 522 sc->sc_cur) { 523 printf ("siopngabort: cleanup!\n"); 524 sc->sc_iob[i].sc_xs = NULL; 525 } 526 } 527 #endif /* fix_this */ 528 /* sc->sc_active = 0; */ 529 } 530 } 531 532 void 533 siopnginitialize(struct siop_softc *sc) 534 { 535 int i; 536 u_int inhibit_sync; 537 extern u_long scsi_nosync; 538 extern int shift_nosync; 539 540 /* 541 * Need to check that scripts is on a long word boundary 542 * Also should verify that dev doesn't span non-contiguous 543 * physical pages. 544 */ 545 sc->sc_scriptspa = kvtop((void *)__UNCONST(siopng_scripts)); 546 547 /* 548 * malloc sc_acb to ensure that DS is on a long word boundary. 549 */ 550 551 sc->sc_acb = malloc(sizeof(struct siop_acb) * SIOP_NACB, 552 M_DEVBUF, M_NOWAIT); 553 if (sc->sc_acb == NULL) 554 panic("siopnginitialize: ACB malloc failed!"); 555 556 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 557 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 558 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 559 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 560 if (sc->sc_minsync < 25) 561 sc->sc_minsync = 25; 562 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */ 563 if (sc->sc_clock_freq <= 25) { 564 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 565 sc->sc_tcp[0] = sc->sc_tcp[1]; 566 } else if (sc->sc_clock_freq <= 37) { 567 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 568 sc->sc_tcp[0] = sc->sc_tcp[2]; 569 } else if (sc->sc_clock_freq <= 50) { 570 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 571 sc->sc_tcp[0] = sc->sc_tcp[3]; 572 } else { 573 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 574 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 575 } 576 577 if (scsi_nosync) { 578 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff; 579 shift_nosync += 16; /* XXX maxtarget */ 580 #ifdef DEBUG 581 if (inhibit_sync) 582 printf("%s: Inhibiting synchronous transfer %02x\n", 583 sc->sc_dev.dv_xname, inhibit_sync); 584 #endif 585 for (i = 0; i < 16; ++i) /* XXX maxtarget */ 586 if (inhibit_sync & (1 << i)) 587 siopng_inhibit_sync[i] = 1; 588 } 589 590 siopngreset (sc); 591 } 592 593 void 594 siopng_timeout(void *arg) 595 { 596 struct siop_acb *acb; 597 struct scsipi_periph *periph; 598 struct siop_softc *sc; 599 int s; 600 601 acb = arg; 602 periph = acb->xs->xs_periph; 603 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); 604 scsipi_printaddr(periph); 605 printf("timed out\n"); 606 607 s = splbio(); 608 609 acb->xs->error = XS_TIMEOUT; 610 siopngreset(sc); 611 612 splx(s); 613 } 614 615 void 616 siopngreset(struct siop_softc *sc) 617 { 618 siop_regmap_p rp; 619 u_int i, s; 620 u_short dummy; 621 struct siop_acb *acb; 622 623 rp = sc->sc_siopp; 624 625 if (sc->sc_flags & SIOP_ALIVE) 626 siopngabort(sc, rp, "reset"); 627 628 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 629 630 s = splbio(); 631 632 /* 633 * Reset the chip 634 * XXX - is this really needed? 635 */ 636 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 637 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 638 rp->siop_istat &= ~SIOP_ISTAT_RST; 639 /* 640 * Reset SCSI bus (do we really want this?) 641 */ 642 rp->siop_sien = 0; 643 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 644 delay(1); 645 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 646 647 /* 648 * Set up various chip parameters 649 */ 650 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */ 651 delay(20); 652 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */ 653 rp->siop_scntl3 = 0x15; /* SCF/CCF*/ 654 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */ 655 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */ 656 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG; 657 rp->siop_dcntl = sc->sc_dcntl; 658 rp->siop_dmode = 0xc0; /* XXX burst length */ 659 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 660 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 661 rp->siop_scid = sc->sc_channel.chan_id | 662 SIOP_SCID_RRE | SIOP_SCID_SRE; 663 rp->siop_respid = 1 << sc->sc_channel.chan_id; 664 rp->siop_dwt = 0x00; 665 rp->siop_stime0 = 0x0c; /* XXXXX check */ 666 667 /* will need to re-negotiate sync xfers */ 668 memset(&sc->sc_sync, 0, sizeof (sc->sc_sync)); 669 670 i = rp->siop_istat; 671 if (i & SIOP_ISTAT_SIP) 672 dummy = rp->siop_sist; 673 if (i & SIOP_ISTAT_DIP) 674 dummy = rp->siop_dstat; 675 676 splx (s); 677 678 delay (siopng_reset_delay * 1000); 679 680 /* 681 * is lower half unterminated? 682 */ 683 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) { 684 printf(" no SCSI termination, host adapter deactivated.\n"); 685 sc->sc_channel.chan_ntargets = 0; /* XXX */ 686 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF); 687 /* disable SCSI and DMA interrupts */ 688 sc->sc_sien = 0; 689 sc->sc_dien = 0; 690 rp->siop_sien = sc->sc_sien; 691 rp->siop_dien = sc->sc_dien; 692 693 return; 694 } 695 696 /* 697 * Check if upper half of SCSI bus is unterminated, and disallow 698 * disconnections if it appears to be unterminated. 699 */ 700 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 701 printf(" NO WIDE TERM"); 702 /* XXX need to restrict maximum target ID as well? */ 703 sc->sc_channel.chan_ntargets = 8; 704 for (i = 0; i < 16; ++i) { 705 siopng_allow_disc[i] = 0; 706 siopng_inhibit_wide[i] |= 0x80; 707 } 708 } 709 710 printf("siopng type %s id %d reset V%d\n", 711 siopng_chips[rp->siop_macntl>>4], 712 sc->sc_channel.chan_ntargets, 713 rp->siop_ctest3 >> 4); 714 715 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 716 TAILQ_INIT(&sc->ready_list); 717 TAILQ_INIT(&sc->nexus_list); 718 TAILQ_INIT(&sc->free_list); 719 sc->sc_nexus = NULL; 720 acb = sc->sc_acb; 721 memset(acb, 0, sizeof(struct siop_acb) * SIOP_NACB); 722 for (i = 0; i < SIOP_NACB; i++) { 723 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 724 acb++; 725 } 726 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 727 } else { 728 if (sc->sc_nexus != NULL) { 729 sc->sc_nexus->xs->error = XS_RESET; 730 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 731 } 732 while ((acb = sc->nexus_list.tqh_first) > 0) { 733 acb->xs->error = XS_RESET; 734 siopng_scsidone(acb, acb->stat[0]); 735 } 736 } 737 738 sc->sc_flags |= SIOP_ALIVE; 739 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 740 /* enable SCSI and DMA interrupts */ 741 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 742 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 743 SIOP_SIEN_RST | SIOP_SIEN_PAR; 744 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 745 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 746 rp->siop_sien = sc->sc_sien; 747 rp->siop_dien = sc->sc_dien; 748 /*siopng_dump_registers(sc);*/ 749 } 750 751 /* 752 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 753 */ 754 755 void 756 siopng_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, 757 int clen, u_char *buf, int len) 758 { 759 siop_regmap_p rp = sc->sc_siopp; 760 int nchain; 761 int count, tcount; 762 char *addr, *dmaend; 763 struct siop_acb *acb = sc->sc_nexus; 764 #ifdef DEBUG 765 int i; 766 #endif 767 768 #ifdef DEBUG 769 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 770 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 771 rp, &siopng_scripts, &acb->ds, sc->sc_active); 772 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 773 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 774 rp->siop_sien, rp->siop_dien); 775 #ifdef DDB 776 /*Debugger();*/ 777 #endif 778 } 779 #endif 780 acb->msgout[0] = MSG_IDENTIFY | lun; 781 if (siopng_allow_disc[target] & 2 || 782 (siopng_allow_disc[target] && len == 0)) 783 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 784 acb->status = 0; 785 acb->stat[0] = -1; 786 acb->msg[0] = -1; 787 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 788 (sc->sc_sync[target].scntl3 << 24); 789 acb->ds.idlen = 1; 790 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 791 acb->ds.cmdlen = clen; 792 acb->ds.cmdbuf = (char *) kvtop(cbuf); 793 acb->ds.stslen = 1; 794 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 795 acb->ds.msglen = 1; 796 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 797 acb->msg[1] = -1; 798 acb->ds.msginlen = 1; 799 acb->ds.extmsglen = 1; 800 acb->ds.synmsglen = 3; 801 acb->ds.msginbuf = acb->ds.msgbuf + 1; 802 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 803 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 804 memset(&acb->ds.chain, 0, sizeof (acb->ds.chain)); 805 806 if (sc->sc_sync[target].state == NEG_WIDE) { 807 if (siopng_inhibit_wide[target]) { 808 sc->sc_sync[target].state = NEG_SYNC; 809 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 810 #ifdef DEBUG 811 if (siopngsync_debug) 812 printf ("Forcing target %d narrow\n", target); 813 #endif 814 } 815 else { 816 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 817 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 818 acb->msg[2] = -1; 819 acb->msgout[1] = MSG_EXT_MESSAGE; 820 acb->msgout[2] = 2; 821 acb->msgout[3] = MSG_WIDE_REQ; 822 acb->msgout[4] = 1; 823 acb->ds.idlen = 5; 824 acb->ds.synmsglen = 2; 825 sc->sc_sync[target].state = NEG_WAITW; 826 #ifdef DEBUG 827 if (siopngsync_debug) 828 printf("Sending wide request to target %d\n", target); 829 #endif 830 } 831 } 832 if (sc->sc_sync[target].state == NEG_SYNC) { 833 if (siopng_inhibit_sync[target]) { 834 sc->sc_sync[target].state = NEG_DONE; 835 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 836 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 837 sc->sc_sync[target].sxfer = 0; 838 #ifdef DEBUG 839 if (siopngsync_debug) 840 printf ("Forcing target %d asynchronous\n", target); 841 #endif 842 } 843 else { 844 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 845 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 846 acb->msg[2] = -1; 847 acb->msgout[1] = MSG_EXT_MESSAGE; 848 acb->msgout[2] = 3; 849 acb->msgout[3] = MSG_SYNC_REQ; 850 #ifdef MAXTOR_SYNC_KLUDGE 851 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 852 #else 853 acb->msgout[4] = sc->sc_minsync; 854 #endif 855 acb->msgout[5] = SIOP_MAX_OFFSET; 856 acb->ds.idlen = 6; 857 sc->sc_sync[target].state = NEG_WAITS; 858 #ifdef DEBUG 859 if (siopngsync_debug) 860 printf ("Sending sync request to target %d\n", target); 861 #endif 862 } 863 } 864 865 /* 866 * Build physical DMA addresses for scatter/gather I/O 867 */ 868 acb->iob_buf = buf; 869 acb->iob_len = len; 870 acb->iob_curbuf = acb->iob_curlen = 0; 871 nchain = 0; 872 count = len; 873 addr = buf; 874 dmaend = NULL; 875 while (count > 0) { 876 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 877 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET))) 878 tcount = count; 879 880 #if DEBUG_ONLY_IF_DESPERATE 881 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 882 nchain, count, tcount, addr, 883 acb->ds.chain[nchain].databuf); 884 #endif 885 acb->ds.chain[nchain].datalen = tcount; 886 addr += tcount; 887 count -= tcount; 888 if (acb->ds.chain[nchain].databuf == dmaend) { 889 dmaend += acb->ds.chain[nchain].datalen; 890 acb->ds.chain[nchain].datalen = 0; 891 acb->ds.chain[--nchain].datalen += tcount; 892 #ifdef DEBUG 893 ++siopngdma_hits; 894 #endif 895 } 896 else { 897 dmaend = acb->ds.chain[nchain].databuf + 898 acb->ds.chain[nchain].datalen; 899 acb->ds.chain[nchain].datalen = tcount; 900 #ifdef DEBUG 901 if (nchain) /* Don't count miss on first one */ 902 ++siopngdma_misses; 903 #endif 904 } 905 ++nchain; 906 } 907 #ifdef DEBUG 908 if (nchain != 1 && len != 0 && siopng_debug & 3) { 909 printf ("DMA chaining set: %d\n", nchain); 910 for (i = 0; i < nchain; ++i) { 911 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 912 acb->ds.chain[i].datalen); 913 } 914 } 915 #endif 916 917 /* push data cache for all data the 53c720/770 needs to access */ 918 dma_cachectl ((void *)acb, sizeof (struct siop_acb)); 919 dma_cachectl (cbuf, clen); 920 if (buf != NULL && len != 0) 921 dma_cachectl (buf, len); 922 #ifdef DEBUG 923 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 924 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 925 rp, &siopng_scripts, &acb->ds, sc->sc_active); 926 #ifdef DDB 927 /*Debugger();*/ 928 #endif 929 } 930 #endif 931 if (sc->nexus_list.tqh_first == NULL) { 932 callout_reset(&acb->xs->xs_callout, 933 mstohz(acb->xs->timeout) + 1, siopng_timeout, acb); 934 if (rp->siop_istat & SIOP_ISTAT_CON) 935 printf("%s: siopng_select while connected?\n", 936 sc->sc_dev.dv_xname); 937 rp->siop_temp = 0; 938 #ifndef FIXME 939 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 940 #endif 941 rp->siop_dsa = kvtop((void *)&acb->ds); 942 rp->siop_dsp = sc->sc_scriptspa; 943 SIOP_TRACE('s',1,0,0) 944 } else { 945 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 946 rp->siop_istat = SIOP_ISTAT_SIGP; 947 SIOP_TRACE('s',2,0,0); 948 } 949 else { 950 SIOP_TRACE('s',3,rp->siop_istat,0); 951 } 952 } 953 #ifdef DEBUG 954 ++siopngstarts; 955 #endif 956 } 957 958 /* 959 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 960 */ 961 962 int 963 siopng_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 964 u_short sist, int *status) 965 { 966 siop_regmap_p rp = sc->sc_siopp; 967 struct siop_acb *acb = sc->sc_nexus; 968 int target = 0; 969 int dfifo, dbc, sstat0, sstat1, sstat2; 970 971 dfifo = rp->siop_dfifo; 972 dbc = rp->siop_dbc0; 973 sstat0 = rp->siop_sstat0; 974 sstat1 = rp->siop_sstat1; 975 sstat2 = rp->siop_sstat2; 976 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 977 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 978 ; 979 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 980 #ifdef DEBUG 981 ++siopngints; 982 #if 0 983 if (siopng_debug & 0x100) { 984 DCIAS(&acb->stat[0]); /* XXX */ 985 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 986 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 987 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 988 acb->msg[0], acb->msg[1], acb->msg[2], 989 acb->msg[3], acb->msg[4], acb->msg[5]); 990 } 991 #endif 992 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 993 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 994 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 995 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 996 sc->sc_scriptspa + sizeof(siopng_scripts)); 997 printf(" istat %x dstat %x sist %x\n", 998 istat, dstat, sist); 999 #ifdef DDB 1000 Debugger(); 1001 #endif 1002 } 1003 #endif 1004 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 1005 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 1006 /* Normal completion status, or check condition */ 1007 #ifdef DEBUG 1008 if (rp->siop_dsa != kvtop((void *)&acb->ds)) { 1009 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 1010 (unsigned)kvtop((void *)&acb->ds)); 1011 panic("*** siopng DSA invalid ***"); 1012 } 1013 #endif 1014 target = acb->xs->xs_periph->periph_target; 1015 if (sc->sc_sync[target].state == NEG_WAITW) { 1016 if (acb->msg[1] == 0xff) 1017 printf ("%s: target %d ignored wide request\n", 1018 sc->sc_dev.dv_xname, target); 1019 else if (acb->msg[1] == MSG_REJECT) 1020 printf ("%s: target %d rejected wide request\n", 1021 sc->sc_dev.dv_xname, target); 1022 else { 1023 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 1024 sc->sc_dev.dv_xname, target, acb->msg[1], 1025 acb->msg[2], acb->msg[3], acb->msg[4]); 1026 if (acb->msg[1] == MSG_EXT_MESSAGE && 1027 acb->msg[2] == 2 && 1028 acb->msg[3] == MSG_WIDE_REQ) 1029 sc->sc_sync[target].scntl3 = acb->msg[4] ? 1030 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 1031 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 1032 } 1033 sc->sc_sync[target].state = NEG_SYNC; 1034 } 1035 if (sc->sc_sync[target].state == NEG_WAITS) { 1036 if (acb->msg[1] == 0xff) 1037 printf ("%s: target %d ignored sync request\n", 1038 sc->sc_dev.dv_xname, target); 1039 else if (acb->msg[1] == MSG_REJECT) 1040 printf ("%s: target %d rejected sync request\n", 1041 sc->sc_dev.dv_xname, target); 1042 else 1043 /* XXX - need to set sync transfer parameters */ 1044 printf("%s: target %d (sync) %02x %02x %02x\n", 1045 sc->sc_dev.dv_xname, target, acb->msg[1], 1046 acb->msg[2], acb->msg[3]); 1047 sc->sc_sync[target].state = NEG_DONE; 1048 } 1049 dma_cachectl(&acb->stat[0], 1); 1050 *status = acb->stat[0]; 1051 #ifdef DEBUG 1052 if (rp->siop_sbcl & SIOP_BSY) { 1053 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1054 rp, &siopng_scripts, &acb->ds);*/ 1055 #ifdef DDB 1056 /*Debugger();*/ 1057 #endif 1058 } 1059 if (acb->msg[0] != 0x00) 1060 printf("%s: message was not COMMAND COMPLETE: %x\n", 1061 sc->sc_dev.dv_xname, acb->msg[0]); 1062 #endif 1063 if (sc->nexus_list.tqh_first) 1064 rp->siop_dcntl |= SIOP_DCNTL_STD; 1065 return 1; 1066 } 1067 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1068 target = acb->xs->xs_periph->periph_target; 1069 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1070 acb->msg[3] == MSG_WIDE_REQ) { 1071 #ifdef DEBUG 1072 if (siopngsync_debug) 1073 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1074 acb->msg[0], acb->msg[1], acb->msg[2], 1075 acb->msg[3], acb->msg[4], acb->msg[5]); 1076 #endif 1077 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1078 if (acb->msg[2] == 2 && 1079 acb->msg[3] == MSG_WIDE_REQ && 1080 acb->msg[4] != 0) { 1081 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1082 printf ("%s: target %d now wide %d\n", 1083 sc->sc_dev.dv_xname, target, 1084 acb->msg[4]); 1085 } 1086 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1087 if (sc->sc_sync[target].state == NEG_WAITW) { 1088 sc->sc_sync[target].state = NEG_SYNC; 1089 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1090 return(0); 1091 } 1092 rp->siop_dcntl |= SIOP_DCNTL_STD; 1093 sc->sc_sync[target].state = NEG_SYNC; 1094 return (0); 1095 } 1096 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1097 acb->msg[3] == MSG_SYNC_REQ) { 1098 #ifdef DEBUG 1099 if (siopngsync_debug) 1100 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1101 acb->msg[0], acb->msg[1], acb->msg[2], 1102 acb->msg[3], acb->msg[4], acb->msg[5]); 1103 #endif 1104 sc->sc_sync[target].sxfer = 0; 1105 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1106 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1107 if (acb->msg[2] == 3 && 1108 acb->msg[3] == MSG_SYNC_REQ && 1109 acb->msg[5] != 0) { 1110 #ifdef MAXTOR_KLUDGE 1111 /* 1112 * Kludge for my Maxtor XT8580S 1113 * It accepts whatever we request, even 1114 * though it won't work. So we ask for 1115 * a short period than we can handle. If 1116 * the device says it can do it, use 208ns. 1117 * If the device says it can do less than 1118 * 100ns, then we limit it to 100ns. 1119 */ 1120 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1121 #ifdef DEBUG 1122 printf ("%d: target %d wanted %dns period\n", 1123 sc->sc_dev.dv_xname, target, 1124 acb->msg[4] * 4); 1125 #endif 1126 if (acb->msg[4] == 50 / 4) 1127 acb->msg[4] = 208 / 4; 1128 else 1129 acb->msg[4] = 100 / 4; 1130 } 1131 #endif /* MAXTOR_KLUDGE */ 1132 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1133 sc->sc_dev.dv_xname, target, 1134 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4, 1135 acb->msg[5]); 1136 scsi_period_to_siopng (sc, target); 1137 } 1138 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1139 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1140 if (sc->sc_sync[target].state == NEG_WAITS) { 1141 sc->sc_sync[target].state = NEG_DONE; 1142 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1143 return(0); 1144 } 1145 rp->siop_dcntl |= SIOP_DCNTL_STD; 1146 sc->sc_sync[target].state = NEG_DONE; 1147 return (0); 1148 } 1149 /* XXX - not SDTR message */ 1150 } 1151 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1152 #ifdef DEBUG 1153 ++siopngphmm; 1154 if (acb == NULL) 1155 printf("%s: Phase mismatch with no active command?\n", 1156 sc->sc_dev.dv_xname); 1157 #endif 1158 if (acb->iob_len) { 1159 int adjust; 1160 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1161 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1162 ++adjust; 1163 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1164 ++adjust; 1165 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1166 ++adjust; 1167 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1168 ++adjust; 1169 acb->iob_curlen = 1170 *((long *)__UNVOLATILE(&rp->siop_dcmd)) & 0xffffff; 1171 acb->iob_curlen += adjust; 1172 acb->iob_curbuf = 1173 *((long *)__UNVOLATILE(&rp->siop_dnad)) - adjust; 1174 #ifdef DEBUG 1175 if (siopng_debug & 0x100) { 1176 int i; 1177 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1178 acb->iob_curbuf, acb->iob_curlen, dfifo, 1179 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1180 if (acb->ds.chain[1].datalen) { 1181 for (i = 0; acb->ds.chain[i].datalen; ++i) 1182 printf("chain[%d] addr %p len %lx\n", 1183 i, acb->ds.chain[i].databuf, 1184 acb->ds.chain[i].datalen); 1185 } 1186 } 1187 #endif 1188 dma_cachectl ((void *)acb, sizeof(*acb)); 1189 } 1190 #ifdef DEBUG 1191 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1192 if (siopng_debug & 9) 1193 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1194 rp->siop_sbcl, 1195 rp->siop_dsp - sc->sc_scriptspa, 1196 *((volatile long *)&rp->siop_dcmd)); 1197 #endif 1198 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1199 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1200 rp->siop_sbcl, rp->siop_dsp); 1201 #if defined(DEBUG) && defined(DDB) 1202 Debugger(); 1203 #endif 1204 } 1205 switch (rp->siop_sbcl & 7) { 1206 case 0: /* data out */ 1207 case 1: /* data in */ 1208 case 2: /* status */ 1209 case 3: /* command */ 1210 case 6: /* message in */ 1211 case 7: /* message out */ 1212 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1213 break; 1214 default: 1215 goto bad_phase; 1216 } 1217 return 0; 1218 } 1219 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1220 #ifdef DEBUG 1221 if (acb == NULL) 1222 printf("%s: Select timeout with no active command?\n", 1223 sc->sc_dev.dv_xname); 1224 if (rp->siop_sbcl & SIOP_BSY) { 1225 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1226 rp, &siopng_scripts, &acb->ds); 1227 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1228 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1229 if (!(rp->siop_sbcl & SIOP_BSY)) { 1230 printf ("Yikes, it's not busy now!\n"); 1231 #if 0 1232 *status = -1; 1233 if (sc->nexus_list.tqh_first) 1234 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1235 return 1; 1236 #endif 1237 } 1238 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1239 return (0); 1240 #ifdef DDB 1241 Debugger(); 1242 #endif 1243 } 1244 #endif 1245 *status = -1; 1246 acb->xs->error = XS_SELTIMEOUT; 1247 if (sc->nexus_list.tqh_first) 1248 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1249 return 1; 1250 } 1251 if (acb) 1252 target = acb->xs->xs_periph->periph_target; 1253 else 1254 target = 7; 1255 if (sist & SIOP_SIST_UDC) { 1256 #ifdef DEBUG 1257 if (acb == NULL) 1258 printf("%s: Unexpected disconnect with no active command?\n", 1259 sc->sc_dev.dv_xname); 1260 printf ("%s: target %d disconnected unexpectedly\n", 1261 sc->sc_dev.dv_xname, target); 1262 siopng_dump_registers(sc); 1263 siopng_dump(sc); 1264 #endif 1265 #if 0 1266 siopngabort (sc, rp, "siopngchkintr"); 1267 #endif 1268 *status = STS_BUSY; 1269 if (sc->nexus_list.tqh_first) 1270 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1271 return (acb != NULL); 1272 } 1273 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1274 rp->siop_dsps == 0xff02)) { 1275 #ifdef DEBUG 1276 if (siopng_debug & 0x100) 1277 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", 1278 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1279 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1280 acb->iob_curbuf, acb->iob_curlen, 1281 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1282 #endif 1283 if (acb == NULL) { 1284 printf("%s: Disconnect with no active command?\n", 1285 sc->sc_dev.dv_xname); 1286 return (0); 1287 } 1288 /* 1289 * XXXX need to update iob_curbuf/iob_curlen to reflect 1290 * current data transferred. If device disconnected in 1291 * the middle of a DMA block, they should already be set 1292 * by the phase change interrupt. If the disconnect 1293 * occurs on a DMA block boundary, we have to figure out 1294 * which DMA block it was. 1295 */ 1296 if (acb->iob_len && rp->siop_temp) { 1297 int n = rp->siop_temp - sc->sc_scriptspa; 1298 1299 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1300 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1301 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1302 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1303 if (n < Ent_datain) 1304 n = (n - Ent_dataout) / 16; 1305 else 1306 n = (n - Ent_datain) / 16; 1307 if (n <= 0 && n > DMAMAXIO) 1308 printf("TEMP invalid %d\n", n); 1309 else { 1310 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1311 acb->iob_curlen = acb->ds.chain[n].datalen; 1312 } 1313 #ifdef DEBUG 1314 if (siopng_debug & 0x100) { 1315 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1316 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1317 acb->iob_curlen); 1318 } 1319 #endif 1320 } 1321 /* 1322 * If data transfer was interrupted by disconnect, iob_curbuf 1323 * and iob_curlen should reflect the point of interruption. 1324 * Adjust the DMA chain so that the data transfer begins 1325 * at the appropriate place upon reselection. 1326 * XXX This should only be done on save data pointer message? 1327 */ 1328 if (acb->iob_curlen) { 1329 int i, j; 1330 1331 #ifdef DEBUG 1332 if (siopng_debug & 0x100) 1333 printf ("%s: adjusting DMA chain\n", 1334 sc->sc_dev.dv_xname); 1335 if (rp->siop_dsps == 0xff02) 1336 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1337 sc->sc_dev.dv_xname, 1 << target); 1338 #endif 1339 for (i = 0; i < DMAMAXIO; ++i) { 1340 if (acb->ds.chain[i].datalen == 0) 1341 break; 1342 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1343 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1344 acb->ds.chain[i].datalen)) 1345 break; 1346 } 1347 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1348 printf("couldn't find saved data pointer: "); 1349 printf("curbuf %lx curlen %lx i %d\n", 1350 acb->iob_curbuf, acb->iob_curlen, i); 1351 #ifdef DDB 1352 Debugger(); 1353 #endif 1354 } 1355 #ifdef DEBUG 1356 if (siopng_debug & 0x100) 1357 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1358 acb->ds.chain[0].databuf, 1359 acb->ds.chain[0].datalen, 1360 acb->iob_curbuf, 1361 acb->iob_curlen); 1362 #endif 1363 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1364 acb->ds.chain[0].datalen = acb->iob_curlen; 1365 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1366 #ifdef DEBUG 1367 if (siopng_debug & 0x100) 1368 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1369 acb->ds.chain[j].databuf, 1370 acb->ds.chain[j].datalen, 1371 acb->ds.chain[i].databuf, 1372 acb->ds.chain[i].datalen); 1373 #endif 1374 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1375 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1376 } 1377 if (j < DMAMAXIO) 1378 acb->ds.chain[j].datalen = 0; 1379 DCIAS(kvtop((void *)&acb->ds.chain)); 1380 } 1381 ++sc->sc_tinfo[target].dconns; 1382 /* 1383 * add nexus to waiting list 1384 * clear nexus 1385 * try to start another command for another target/lun 1386 */ 1387 acb->status = sc->sc_flags & SIOP_INTSOFF; 1388 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1389 sc->sc_nexus = NULL; /* no current device */ 1390 /* start script to wait for reselect */ 1391 if (sc->sc_nexus == NULL) 1392 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1393 /* XXXX start another command ? */ 1394 if (sc->ready_list.tqh_first) 1395 siopng_sched(sc); 1396 #if 0 1397 else 1398 rp->siop_dcntl |= SIOP_DCNTL_STD; 1399 #endif 1400 return (0); 1401 } 1402 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1403 int reselid = rp->siop_scratcha & 0x7f; 1404 int reselun = rp->siop_sfbr & 0x07; 1405 1406 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1407 #ifdef DEBUG 1408 if (siopng_debug & 0x100) 1409 printf ("%s: target ID %02x reselected dsps %lx\n", 1410 sc->sc_dev.dv_xname, reselid, 1411 rp->siop_dsps); 1412 if ((rp->siop_sfbr & 0x80) == 0) 1413 printf("%s: Reselect message in was not identify: %x\n", 1414 sc->sc_dev.dv_xname, rp->siop_sfbr); 1415 #endif 1416 if (sc->sc_nexus) { 1417 #ifdef DEBUG 1418 if (siopng_debug & 0x100) 1419 printf ("%s: reselect ID %02x w/active\n", 1420 sc->sc_dev.dv_xname, reselid); 1421 #endif 1422 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1423 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1424 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1425 --sc->sc_active; 1426 } 1427 /* 1428 * locate acb of reselecting device 1429 * set sc->sc_nexus to acb 1430 */ 1431 for (acb = sc->nexus_list.tqh_first; acb; 1432 acb = acb->chain.tqe_next) { 1433 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1434 reselun != (acb->msgout[0] & 0x07)) 1435 continue; 1436 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1437 sc->sc_nexus = acb; 1438 sc->sc_flags |= acb->status; 1439 acb->status = 0; 1440 DCIAS(kvtop(&acb->stat[0])); 1441 rp->siop_dsa = kvtop((void *)&acb->ds); 1442 rp->siop_sxfer = 1443 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1444 #ifndef FIXME 1445 rp->siop_scntl3 = 1446 sc->sc_sync[acb->xs->xs_periph->periph_target].scntl3; 1447 #endif 1448 break; 1449 } 1450 if (acb == NULL) { 1451 printf("%s: target ID %02x reselect nexus_list %p\n", 1452 sc->sc_dev.dv_xname, reselid, 1453 sc->nexus_list.tqh_first); 1454 panic("unable to find reselecting device"); 1455 } 1456 dma_cachectl ((void *)acb, sizeof(*acb)); 1457 rp->siop_temp = 0; 1458 rp->siop_dcntl |= SIOP_DCNTL_STD; 1459 return (0); 1460 } 1461 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1462 #ifdef DEBUG 1463 u_short ctest2 = rp->siop_ctest2; 1464 1465 /* reselect was interrupted (by Sig_P or select) */ 1466 if (siopng_debug & 0x100 || 1467 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1468 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1469 sc->sc_dev.dv_xname, rp->siop_scntl1, 1470 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1471 #endif 1472 /* XXX assumes it was not select */ 1473 if (sc->sc_nexus == NULL) { 1474 #ifdef DEBUG 1475 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1476 sc->sc_dev.dv_xname); 1477 #if 0 1478 siopng_dump(sc); 1479 #ifdef DDB 1480 Debugger(); 1481 #endif 1482 #endif 1483 #endif 1484 rp->siop_dcntl |= SIOP_DCNTL_STD; 1485 return(0); 1486 } 1487 target = sc->sc_nexus->xs->xs_periph->periph_target; 1488 rp->siop_temp = 0; 1489 rp->siop_dsa = kvtop((void *)&sc->sc_nexus->ds); 1490 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1491 #ifndef FIXME 1492 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1493 #endif 1494 rp->siop_dsp = sc->sc_scriptspa; 1495 return (0); 1496 } 1497 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1498 if (acb == NULL) 1499 printf("%s: Bad message-in with no active command?\n", 1500 sc->sc_dev.dv_xname); 1501 /* Unrecognized message in byte */ 1502 dma_cachectl (&acb->msg[1],1); 1503 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1504 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1505 /* what should be done here? */ 1506 DCIAS(kvtop(&acb->msg[1])); 1507 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1508 return (0); 1509 } 1510 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1511 /* Status phase wasn't followed by message in phase? */ 1512 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1513 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1514 if (rp->siop_sbcl == 0xa7) { 1515 /* It is now, just continue the script? */ 1516 rp->siop_dcntl |= SIOP_DCNTL_STD; 1517 return (0); 1518 } 1519 } 1520 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1521 dma_cachectl (&acb->stat[0], 1); 1522 dma_cachectl (&acb->msg[0], 1); 1523 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1524 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1525 rp->siop_sbcl); 1526 siopngreset (sc); 1527 *status = -1; 1528 return 0; /* siopngreset has cleaned up */ 1529 } 1530 if (sist & SIOP_SIST_SGE) 1531 printf ("SIOP: SCSI Gross Error\n"); 1532 if (sist & SIOP_SIST_PAR) 1533 printf ("SIOP: Parity Error\n"); 1534 if (dstat & SIOP_DSTAT_IID) 1535 printf ("SIOP: Invalid instruction detected\n"); 1536 bad_phase: 1537 /* 1538 * temporary panic for unhandled conditions 1539 * displays various things about the 53C720/770 status and registers 1540 * then panics. 1541 * XXXX need to clean this up to print out the info, reset, and continue 1542 */ 1543 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1544 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", 1545 sc->sc_scriptspa, (unsigned)kvtop((void *)&acb->ds), 1546 (unsigned)kvtop((void *)__UNVOLATILE(rp)), rp->siop_dsp, 1547 *((long *)__UNVOLATILE(&rp->siop_dcmd))); 1548 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1549 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1550 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1551 #ifdef DEBUG 1552 if (siopng_debug & 0x20) 1553 panic("siopngchkintr: **** temp ****"); 1554 #endif 1555 #ifdef DDB 1556 Debugger (); 1557 #endif 1558 siopngreset (sc); /* hard reset */ 1559 *status = -1; 1560 return 0; /* siopngreset cleaned up */ 1561 } 1562 1563 void 1564 siopng_select(struct siop_softc *sc) 1565 { 1566 siop_regmap_p rp; 1567 struct siop_acb *acb = sc->sc_nexus; 1568 1569 #ifdef DEBUG 1570 if (siopng_debug & 1) 1571 printf ("%s: select ", sc->sc_dev.dv_xname); 1572 #endif 1573 1574 rp = sc->sc_siopp; 1575 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) { 1576 sc->sc_flags |= SIOP_INTSOFF; 1577 sc->sc_flags &= ~SIOP_INTDEFER; 1578 if ((rp->siop_istat & 0x08) == 0) { 1579 rp->siop_sien = 0; 1580 rp->siop_dien = 0; 1581 } 1582 #if 0 1583 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1584 sc->sc_flags &= ~SIOP_INTSOFF; 1585 if ((rp->siop_istat & 0x08) == 0) { 1586 rp->siop_sien = sc->sc_sien; 1587 rp->siop_dien = sc->sc_dien; 1588 } 1589 #endif 1590 } 1591 #ifdef DEBUG 1592 if (siopng_debug & 1) 1593 printf ("siopng_select: target %x cmd %02x ds %p\n", 1594 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1595 &sc->sc_nexus->ds); 1596 #endif 1597 1598 siopng_start(sc, acb->xs->xs_periph->periph_target, 1599 acb->xs->xs_periph->periph_lun, 1600 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1601 1602 return; 1603 } 1604 1605 /* 1606 * 53C720/770 interrupt handler 1607 */ 1608 1609 void 1610 siopngintr(register struct siop_softc *sc) 1611 { 1612 siop_regmap_p rp; 1613 u_char istat, dstat; 1614 u_short sist; 1615 int status; 1616 int s = splbio(); 1617 1618 istat = sc->sc_istat; 1619 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1620 splx(s); 1621 return; 1622 } 1623 1624 /* Got a valid interrupt on this device */ 1625 rp = sc->sc_siopp; 1626 dstat = sc->sc_dstat; 1627 sist = sc->sc_sist; 1628 if (dstat & SIOP_DSTAT_SIR) 1629 sc->sc_intcode = rp->siop_dsps; 1630 sc->sc_istat = 0; 1631 #ifdef DEBUG 1632 if (siopng_debug & 1) 1633 printf ("%s: intr istat %x dstat %x sist %x\n", 1634 sc->sc_dev.dv_xname, istat, dstat, sist); 1635 if (!sc->sc_active) { 1636 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1637 sc->sc_dev.dv_xname, istat, dstat, sist, 1638 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1639 } 1640 #endif 1641 1642 #ifdef DEBUG 1643 if (siopng_debug & 5) { 1644 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1645 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1646 sc->sc_dev.dv_xname, istat, dstat, sist, 1647 rp->siop_dsps, rp->siop_sbcl, 1648 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1649 } 1650 #endif 1651 if (sc->sc_flags & SIOP_INTDEFER) { 1652 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1653 rp->siop_sien = sc->sc_sien; 1654 rp->siop_dien = sc->sc_dien; 1655 } 1656 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1657 #if 1 1658 if (status == 0xff) 1659 printf ("siopngintr: status == 0xff\n"); 1660 #endif 1661 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1662 #if 0 1663 if (rp->siop_sbcl & SIOP_BSY) { 1664 printf ("%s: SCSI bus busy at completion", 1665 sc->sc_dev.dv_xname); 1666 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1667 sc->sc_nexus->xs->xs_periph->periph_target, 1668 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1669 rp->siop_dsp - sc->sc_scriptspa); 1670 } 1671 #endif 1672 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1673 sc->sc_nexus->stat[0] : -1); 1674 } 1675 } 1676 splx(s); 1677 } 1678 1679 /* 1680 * This is based on the Progressive Peripherals 33 MHz Zeus driver and will 1681 * not be correct for other 53c710 boards. 1682 * 1683 */ 1684 void 1685 scsi_period_to_siopng(struct siop_softc *sc, int target) 1686 { 1687 int period, offset, sxfer, scntl3 = 0; 1688 1689 period = sc->sc_nexus->msg[4]; 1690 offset = sc->sc_nexus->msg[5]; 1691 #ifdef FIXME 1692 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1693 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1694 if (sxfer >= 0 && sxfer <= 7) 1695 break; 1696 } 1697 if (scntl3 > 3) { 1698 printf("siopng sync: unable to compute sync params for period %dns\n", 1699 period * 4); 1700 /* 1701 * XXX need to pick a value we can do and renegotiate 1702 */ 1703 sxfer = scntl3 = 0; 1704 } else { 1705 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1706 offset : SIOP_MAX_OFFSET); 1707 #ifdef DEBUG_SYNC 1708 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1709 period * 4, sxfer, scntl3); 1710 printf(" actual period %dns\n", 1711 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1712 #endif /* DEBUG_SYNC */ 1713 } 1714 #else /* FIXME */ 1715 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1716 sxfer |= 0x20; /* XXX XFERP: 5 */ 1717 #ifndef FIXME 1718 if (period <= (50 / 4)) /* XXX */ 1719 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1720 else if (period <= (100 / 4)) 1721 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1722 else if (period <= (200 / 4)) 1723 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1724 else 1725 scntl3 = 0xff; /* XXX ??? */ 1726 #else 1727 scntl3 = 5; 1728 #endif 1729 #endif 1730 sc->sc_sync[target].sxfer = sxfer; 1731 sc->sc_sync[target].scntl3 = scntl3 | 1732 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1733 #ifdef DEBUG_SYNC 1734 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1735 #endif 1736 } 1737 1738 void 1739 siopng_dump_registers(struct siop_softc *sc) 1740 { 1741 siop_regmap_p rp = sc->sc_siopp; 1742 1743 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1744 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1745 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1746 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1747 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1748 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1749 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1750 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1751 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1752 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1753 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1754 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1755 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1756 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1757 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1758 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1759 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1760 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1761 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1762 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1763 printf(" sidl %04x sodl %04x sbdl %04x\n", 1764 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1765 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1766 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1767 rp->siop_dsp - sc->sc_scriptspa : 0); 1768 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1769 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1770 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1771 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1772 } 1773 1774 #ifdef DEBUG 1775 1776 #if SIOP_TRACE_SIZE 1777 void 1778 siopng_dump_trace(void) 1779 { 1780 int i; 1781 1782 printf("siopng trace: next index %d\n", siopng_trix); 1783 i = siopng_trix; 1784 do { 1785 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1786 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1787 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1788 } while (i != siopng_trix); 1789 } 1790 #endif 1791 1792 void 1793 siopng_dump_acb(struct siop_acb *acb) 1794 { 1795 u_char *b = (u_char *) &acb->cmd; 1796 int i; 1797 1798 printf("acb@%p ", acb); 1799 if (acb->xs == NULL) { 1800 printf("<unused>\n"); 1801 return; 1802 } 1803 printf("(%d:%d) flags %2x clen %2d cmd ", 1804 acb->xs->xs_periph->periph_target, 1805 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1806 for (i = acb->clen; i; --i) 1807 printf(" %02x", *b++); 1808 printf("\n"); 1809 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1810 acb->xs->datalen); 1811 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1812 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1813 } 1814 1815 void 1816 siopng_dump(struct siop_softc *sc) 1817 { 1818 struct siop_acb *acb; 1819 siop_regmap_p rp = sc->sc_siopp; 1820 int s; 1821 int i; 1822 1823 s = splbio(); 1824 #if SIOP_TRACE_SIZE 1825 siopng_dump_trace(); 1826 #endif 1827 printf("%s@%p regs %p istat %x\n", 1828 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1829 if ((acb = sc->free_list.tqh_first) > 0) { 1830 printf("Free list:\n"); 1831 while (acb) { 1832 siopng_dump_acb(acb); 1833 acb = acb->chain.tqe_next; 1834 } 1835 } 1836 if ((acb = sc->ready_list.tqh_first) > 0) { 1837 printf("Ready list:\n"); 1838 while (acb) { 1839 siopng_dump_acb(acb); 1840 acb = acb->chain.tqe_next; 1841 } 1842 } 1843 if ((acb = sc->nexus_list.tqh_first) > 0) { 1844 printf("Nexus list:\n"); 1845 while (acb) { 1846 siopng_dump_acb(acb); 1847 acb = acb->chain.tqe_next; 1848 } 1849 } 1850 if (sc->sc_nexus) { 1851 printf("Nexus:\n"); 1852 siopng_dump_acb(sc->sc_nexus); 1853 } 1854 for (i = 0; i < 8; ++i) { 1855 if (sc->sc_tinfo[i].cmds > 2) { 1856 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1857 i, sc->sc_tinfo[i].cmds, 1858 sc->sc_tinfo[i].dconns, 1859 sc->sc_tinfo[i].lubusy); 1860 } 1861 } 1862 splx(s); 1863 } 1864 #endif 1865
Indexes created Thu Oct 02 14:10:14 GMT 2025