1 /* $NetBSD: siop2.c,v 1.40 2010/12/20 00:25:26 matt 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 1.40 2010/12/20 00:25:26 matt 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 <dev/scsipi/scsi_all.h> 85 #include <dev/scsipi/scsipi_all.h> 86 #include <dev/scsipi/scsiconf.h> 87 #include <machine/cpu.h> 88 #ifdef __m68k__ 89 #include <m68k/include/cacheops.h> 90 #else 91 #define DCIAS(pa) dma_cachectl((void *)(pa), 1) 92 #endif 93 #include <amiga/amiga/custom.h> 94 #include <amiga/amiga/device.h> 95 #include <amiga/amiga/isr.h> 96 97 #define ARCH_720 98 99 #include <amiga/dev/siopreg.h> 100 #include <amiga/dev/siopvar.h> 101 102 /* 103 * SCSI delays 104 * In u-seconds, primarily for state changes on the SPC. 105 */ 106 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 107 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 108 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 109 110 void siopng_select(struct siop_softc *); 111 void siopngabort(struct siop_softc *, siop_regmap_p, const char *); 112 void siopngerror(struct siop_softc *, siop_regmap_p, u_char); 113 int siopng_checkintr(struct siop_softc *, u_char, u_char, u_short, int *); 114 void siopngreset(struct siop_softc *); 115 void siopngsetdelay(int); 116 void siopng_scsidone(struct siop_acb *, int); 117 void siopng_timeout(void *); 118 void siopng_sched(struct siop_softc *); 119 void siopng_poll(struct siop_softc *, struct siop_acb *); 120 void siopngintr(struct siop_softc *); 121 void scsi_period_to_siopng(struct siop_softc *, int); 122 void siopng_start(struct siop_softc *, int, int, u_char *, int, u_char *, int); 123 void siopng_dump_acb(struct siop_acb *); 124 125 /* 53C720/770 script */ 126 127 #include <amiga/dev/siop2_script.out> 128 129 /* default to not inhibit sync negotiation on any drive */ 130 u_char siopng_inhibit_sync[16] = { 131 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 132 }; /* initialize, so patchable */ 133 134 u_char siopng_inhibit_wide[16] = { 135 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 136 }; /* initialize, so patchable */ 137 138 u_char siopng_allow_disc[16] = { 139 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 140 }; 141 142 int siopng_no_dma = 0; 143 144 int siopng_reset_delay = 250; /* delay after reset, in milleseconds */ 145 146 int siopng_cmd_wait = SCSI_CMD_WAIT; 147 int siopng_data_wait = SCSI_DATA_WAIT; 148 int siopng_init_wait = SCSI_INIT_WAIT; 149 150 /*#define DEBUG_SYNC*/ 151 152 #ifdef DEBUG 153 /* 154 * 0x01 - full debug 155 * 0x02 - DMA chaining 156 * 0x04 - siopngintr 157 * 0x08 - phase mismatch 158 * 0x10 - <not used> 159 * 0x20 - panic on unhandled exceptions 160 * 0x100 - disconnect/reselect 161 */ 162 int siopng_debug = 0; 163 int siopngsync_debug = 0; 164 int siopngdma_hits = 0; 165 int siopngdma_misses = 0; 166 int siopngchain_ints = 0; 167 int siopngstarts = 0; 168 int siopngints = 0; 169 int siopngphmm = 0; 170 #define SIOP_TRACE_SIZE 128 171 #define SIOP_TRACE(a,b,c,d) \ 172 siopng_trbuf[siopng_trix] = (a); \ 173 siopng_trbuf[siopng_trix+1] = (b); \ 174 siopng_trbuf[siopng_trix+2] = (c); \ 175 siopng_trbuf[siopng_trix+3] = (d); \ 176 siopng_trix = (siopng_trix + 4) & (SIOP_TRACE_SIZE - 1); 177 u_char siopng_trbuf[SIOP_TRACE_SIZE]; 178 int siopng_trix; 179 void siopng_dump(struct siop_softc *); 180 void siopng_dump_trace(void); 181 #else 182 #define SIOP_TRACE(a,b,c,d) 183 #endif 184 185 186 static const char *siopng_chips[] = { 187 "720", "720SE", "770", "0x3", 188 "810A", "0x5", "0x6", "0x7", 189 "0x8", "0x9", "0xA", "0xB", 190 "0xC", "0xD", "0xE", "0xF", 191 }; 192 193 /* 194 * default minphys routine for siopng based controllers 195 */ 196 void 197 siopng_minphys(struct buf *bp) 198 { 199 200 /* 201 * No max transfer at this level. 202 */ 203 minphys(bp); 204 } 205 206 /* 207 * used by specific siopng controller 208 * 209 */ 210 void 211 siopng_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 212 void *arg) 213 { 214 struct scsipi_xfer *xs; 215 struct scsipi_periph *periph; 216 struct siop_acb *acb; 217 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 218 int flags, s; 219 220 switch (req) { 221 case ADAPTER_REQ_RUN_XFER: 222 xs = arg; 223 periph = xs->xs_periph; 224 flags = xs->xs_control; 225 226 /* XXXX ?? */ 227 if (flags & XS_CTL_DATA_UIO) 228 panic("siopng: scsi data uio requested"); 229 230 /* XXXX ?? */ 231 if (sc->sc_nexus && flags & XS_CTL_POLL) 232 /* panic("siopng_scsicmd: busy");*/ 233 printf("siopng_scsicmd: busy\n"); 234 235 s = splbio(); 236 acb = sc->free_list.tqh_first; 237 if (acb) { 238 TAILQ_REMOVE(&sc->free_list, acb, chain); 239 } 240 splx(s); 241 242 #ifdef DIAGNOSTIC 243 /* 244 * This should never happen as we track the resources 245 * in the mid-layer. 246 */ 247 if (acb == NULL) { 248 scsipi_printaddr(periph); 249 printf("unable to allocate acb\n"); 250 panic("siopng_scsipi_request"); 251 } 252 #endif 253 acb->flags = ACB_ACTIVE; 254 acb->xs = xs; 255 memcpy(&acb->cmd, xs->cmd, xs->cmdlen); 256 acb->clen = xs->cmdlen; 257 acb->daddr = xs->data; 258 acb->dleft = xs->datalen; 259 260 s = splbio(); 261 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 262 263 if (sc->sc_nexus == NULL) 264 siopng_sched(sc); 265 266 splx(s); 267 268 if (flags & XS_CTL_POLL || siopng_no_dma) 269 siopng_poll(sc, acb); 270 return; 271 272 case ADAPTER_REQ_GROW_RESOURCES: 273 return; 274 275 case ADAPTER_REQ_SET_XFER_MODE: 276 return; 277 } 278 } 279 280 void 281 siopng_poll(struct siop_softc *sc, struct siop_acb *acb) 282 { 283 siop_regmap_p rp = sc->sc_siopp; 284 struct scsipi_xfer *xs = acb->xs; 285 int i; 286 int status; 287 u_char istat; 288 u_char dstat; 289 u_short sist; 290 int s; 291 int to; 292 293 s = splbio(); 294 to = xs->timeout / 1000; 295 if (sc->nexus_list.tqh_first) 296 printf("%s: siopng_poll called with disconnected device\n", 297 sc->sc_dev.dv_xname); 298 for (;;) { 299 /* use cmd_wait values? */ 300 i = 50000; 301 /* XXX spl0(); */ 302 while (((istat = rp->siop_istat) & 303 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 304 if (--i <= 0) { 305 #ifdef DEBUG 306 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 307 xs->xs_periph->periph_target, acb->cmd.opcode, 308 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp, 309 rp->siop_dsp - sc->sc_scriptspa, 310 *((volatile long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 311 #endif 312 i = 50000; 313 --to; 314 if (to <= 0) { 315 siopngreset(sc); 316 return; 317 } 318 } 319 delay(20); 320 } 321 sist = rp->siop_sist; 322 dstat = rp->siop_dstat; 323 if (siopng_checkintr(sc, istat, dstat, sist, &status)) { 324 if (acb != sc->sc_nexus) 325 printf("%s: siopng_poll disconnected device completed\n", 326 sc->sc_dev.dv_xname); 327 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 328 sc->sc_flags &= ~SIOP_INTSOFF; 329 rp->siop_sien = sc->sc_sien; 330 rp->siop_dien = sc->sc_dien; 331 } 332 siopng_scsidone(sc->sc_nexus, status); 333 } 334 if (xs->xs_status & XS_STS_DONE) 335 break; 336 } 337 splx(s); 338 } 339 340 /* 341 * start next command that's ready 342 */ 343 void 344 siopng_sched(struct siop_softc *sc) 345 { 346 struct scsipi_periph *periph; 347 struct siop_acb *acb; 348 int i; 349 350 #ifdef DEBUG 351 if (sc->sc_nexus) { 352 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n", 353 sc->sc_dev.dv_xname, sc->sc_nexus, 354 sc->sc_nexus->xs->xs_periph->periph_target, 355 sc->ready_list.tqh_first, 356 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 357 return; 358 } 359 #endif 360 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 361 periph = acb->xs->xs_periph; 362 i = periph->periph_target; 363 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 364 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 365 366 TAILQ_REMOVE(&sc->ready_list, acb, chain); 367 sc->sc_nexus = acb; 368 periph = acb->xs->xs_periph; 369 ti = &sc->sc_tinfo[periph->periph_target]; 370 ti->lubusy |= (1 << periph->periph_lun); 371 break; 372 } 373 } 374 375 if (acb == NULL) { 376 #ifdef DEBUGXXX 377 printf("%s: siopng_sched didn't find ready command\n", 378 sc->sc_dev.dv_xname); 379 #endif 380 return; 381 } 382 383 if (acb->xs->xs_control & XS_CTL_RESET) 384 siopngreset(sc); 385 386 #if 0 387 acb->cmd.bytes[0] |= periph->periph_lun << 5; /* XXXX */ 388 #endif 389 ++sc->sc_active; 390 siopng_select(sc); 391 } 392 393 void 394 siopng_scsidone(struct siop_acb *acb, int stat) 395 { 396 struct scsipi_xfer *xs; 397 struct scsipi_periph *periph; 398 struct siop_softc *sc; 399 int dosched = 0; 400 401 if (acb == NULL || (xs = acb->xs) == NULL) { 402 #ifdef DIAGNOSTIC 403 printf("siopng_scsidone: NULL acb or scsipi_xfer\n"); 404 #if defined(DEBUG) && defined(DDB) 405 Debugger(); 406 #endif 407 #endif 408 return; 409 } 410 411 callout_stop(&xs->xs_callout); 412 413 periph = xs->xs_periph; 414 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev; 415 416 xs->status = stat; 417 xs->resid = 0; /* XXXX */ 418 419 if (xs->error == XS_NOERROR) { 420 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 421 xs->error = XS_BUSY; 422 } 423 424 /* 425 * Remove the ACB from whatever queue it's on. We have to do a bit of 426 * a hack to figure out which queue it's on. Note that it is *not* 427 * necessary to cdr down the ready queue, but we must cdr down the 428 * nexus queue and see if it's there, so we can mark the unit as no 429 * longer busy. This code is sickening, but it works. 430 */ 431 if (acb == sc->sc_nexus) { 432 sc->sc_nexus = NULL; 433 sc->sc_tinfo[periph->periph_target].lubusy &= 434 ~(1<<periph->periph_lun); 435 if (sc->ready_list.tqh_first) 436 dosched = 1; /* start next command */ 437 --sc->sc_active; 438 SIOP_TRACE('d','a',stat,0) 439 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 440 TAILQ_REMOVE(&sc->ready_list, acb, chain); 441 SIOP_TRACE('d','r',stat,0) 442 } else { 443 register struct siop_acb *acb2; 444 for (acb2 = sc->nexus_list.tqh_first; acb2; 445 acb2 = acb2->chain.tqe_next) 446 if (acb2 == acb) { 447 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 448 sc->sc_tinfo[periph->periph_target].lubusy 449 &= ~(1<<periph->periph_lun); 450 --sc->sc_active; 451 break; 452 } 453 if (acb2) 454 ; 455 else if (acb->chain.tqe_next) { 456 TAILQ_REMOVE(&sc->ready_list, acb, chain); 457 --sc->sc_active; 458 } else { 459 printf("%s: can't find matching acb\n", 460 sc->sc_dev.dv_xname); 461 #ifdef DDB 462 /* Debugger(); */ 463 #endif 464 } 465 SIOP_TRACE('d','n',stat,0); 466 } 467 /* Put it on the free list. */ 468 acb->flags = ACB_FREE; 469 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 470 471 sc->sc_tinfo[periph->periph_target].cmds++; 472 473 scsipi_done(xs); 474 475 if (dosched && sc->sc_nexus == NULL) 476 siopng_sched(sc); 477 } 478 479 void 480 siopngabort(register struct siop_softc *sc, siop_regmap_p rp, const char *where) 481 { 482 #ifdef fix_this 483 int i; 484 #endif 485 486 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n", 487 sc->sc_dev.dv_xname, 488 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist, 489 rp->siop_sien, rp->siop_sbcl); 490 siopng_dump_registers(sc); 491 492 if (sc->sc_active > 0) { 493 #ifdef TODO 494 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 495 WAIT_CIP (rp); 496 497 GET_SBIC_asr (rp, asr); 498 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 499 { 500 /* ok, get more drastic.. */ 501 502 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 503 delay(25); 504 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 505 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 506 507 return; 508 } 509 510 do 511 { 512 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 513 GET_SBIC_csr (rp, csr); 514 } 515 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 516 && (csr != SBIC_CSR_CMD_INVALID)); 517 #endif 518 519 /* lets just hope it worked.. */ 520 #ifdef fix_this 521 for (i = 0; i < 2; ++i) { 522 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 523 sc->sc_cur) { 524 printf ("siopngabort: cleanup!\n"); 525 sc->sc_iob[i].sc_xs = NULL; 526 } 527 } 528 #endif /* fix_this */ 529 /* sc->sc_active = 0; */ 530 } 531 } 532 533 void 534 siopnginitialize(struct siop_softc *sc) 535 { 536 int i; 537 u_int inhibit_sync; 538 extern u_long scsi_nosync; 539 extern int shift_nosync; 540 541 /* 542 * Need to check that scripts is on a long word boundary 543 * Also should verify that dev doesn't span non-contiguous 544 * physical pages. 545 */ 546 sc->sc_scriptspa = kvtop((void *)__UNCONST(siopng_scripts)); 547 548 /* 549 * malloc sc_acb to ensure that DS is on a long word boundary. 550 */ 551 552 sc->sc_acb = malloc(sizeof(struct siop_acb) * SIOP_NACB, 553 M_DEVBUF, M_NOWAIT); 554 if (sc->sc_acb == NULL) 555 panic("siopnginitialize: ACB malloc failed!"); 556 557 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 558 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 559 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 560 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 561 if (sc->sc_minsync < 25) 562 sc->sc_minsync = 25; 563 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */ 564 if (sc->sc_clock_freq <= 25) { 565 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 566 sc->sc_tcp[0] = sc->sc_tcp[1]; 567 } else if (sc->sc_clock_freq <= 37) { 568 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 569 sc->sc_tcp[0] = sc->sc_tcp[2]; 570 } else if (sc->sc_clock_freq <= 50) { 571 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 572 sc->sc_tcp[0] = sc->sc_tcp[3]; 573 } else { 574 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 575 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 576 } 577 578 if (scsi_nosync) { 579 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff; 580 shift_nosync += 16; /* XXX maxtarget */ 581 #ifdef DEBUG 582 if (inhibit_sync) 583 printf("%s: Inhibiting synchronous transfer %02x\n", 584 sc->sc_dev.dv_xname, inhibit_sync); 585 #endif 586 for (i = 0; i < 16; ++i) /* XXX maxtarget */ 587 if (inhibit_sync & (1 << i)) 588 siopng_inhibit_sync[i] = 1; 589 } 590 591 siopngreset (sc); 592 } 593 594 void 595 siopng_timeout(void *arg) 596 { 597 struct siop_acb *acb; 598 struct scsipi_periph *periph; 599 struct siop_softc *sc; 600 int s; 601 602 acb = arg; 603 periph = acb->xs->xs_periph; 604 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); 605 scsipi_printaddr(periph); 606 printf("timed out\n"); 607 608 s = splbio(); 609 610 acb->xs->error = XS_TIMEOUT; 611 siopngreset(sc); 612 613 splx(s); 614 } 615 616 void 617 siopngreset(struct siop_softc *sc) 618 { 619 siop_regmap_p rp; 620 u_int i, s; 621 u_short dummy; 622 struct siop_acb *acb; 623 624 rp = sc->sc_siopp; 625 626 if (sc->sc_flags & SIOP_ALIVE) 627 siopngabort(sc, rp, "reset"); 628 629 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 630 631 s = splbio(); 632 633 /* 634 * Reset the chip 635 * XXX - is this really needed? 636 */ 637 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 638 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 639 rp->siop_istat &= ~SIOP_ISTAT_RST; 640 /* 641 * Reset SCSI bus (do we really want this?) 642 */ 643 rp->siop_sien = 0; 644 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 645 delay(1); 646 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 647 648 /* 649 * Set up various chip parameters 650 */ 651 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */ 652 delay(20); 653 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */ 654 rp->siop_scntl3 = 0x15; /* SCF/CCF*/ 655 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */ 656 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */ 657 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG; 658 rp->siop_dcntl = sc->sc_dcntl; 659 rp->siop_dmode = 0xc0; /* XXX burst length */ 660 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 661 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 662 rp->siop_scid = sc->sc_channel.chan_id | 663 SIOP_SCID_RRE | SIOP_SCID_SRE; 664 rp->siop_respid = 1 << sc->sc_channel.chan_id; 665 rp->siop_dwt = 0x00; 666 rp->siop_stime0 = 0x0c; /* XXXXX check */ 667 668 /* will need to re-negotiate sync xfers */ 669 memset(&sc->sc_sync, 0, sizeof (sc->sc_sync)); 670 671 i = rp->siop_istat; 672 if (i & SIOP_ISTAT_SIP) 673 dummy = rp->siop_sist; 674 if (i & SIOP_ISTAT_DIP) 675 dummy = rp->siop_dstat; 676 677 splx (s); 678 679 delay (siopng_reset_delay * 1000); 680 681 /* 682 * is lower half unterminated? 683 */ 684 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) { 685 printf(" no SCSI termination, host adapter deactivated.\n"); 686 sc->sc_channel.chan_ntargets = 0; /* XXX */ 687 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF); 688 /* disable SCSI and DMA interrupts */ 689 sc->sc_sien = 0; 690 sc->sc_dien = 0; 691 rp->siop_sien = sc->sc_sien; 692 rp->siop_dien = sc->sc_dien; 693 694 return; 695 } 696 697 /* 698 * Check if upper half of SCSI bus is unterminated, and disallow 699 * disconnections if it appears to be unterminated. 700 */ 701 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 702 printf(" NO WIDE TERM"); 703 /* XXX need to restrict maximum target ID as well? */ 704 sc->sc_channel.chan_ntargets = 8; 705 for (i = 0; i < 16; ++i) { 706 siopng_allow_disc[i] = 0; 707 siopng_inhibit_wide[i] |= 0x80; 708 } 709 } 710 711 printf("siopng type %s id %d reset V%d\n", 712 siopng_chips[rp->siop_macntl>>4], 713 sc->sc_channel.chan_ntargets, 714 rp->siop_ctest3 >> 4); 715 716 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 717 TAILQ_INIT(&sc->ready_list); 718 TAILQ_INIT(&sc->nexus_list); 719 TAILQ_INIT(&sc->free_list); 720 sc->sc_nexus = NULL; 721 acb = sc->sc_acb; 722 memset(acb, 0, sizeof(struct siop_acb) * SIOP_NACB); 723 for (i = 0; i < SIOP_NACB; i++) { 724 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 725 acb++; 726 } 727 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 728 } else { 729 if (sc->sc_nexus != NULL) { 730 sc->sc_nexus->xs->error = XS_RESET; 731 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 732 } 733 while ((acb = sc->nexus_list.tqh_first) > 0) { 734 acb->xs->error = XS_RESET; 735 siopng_scsidone(acb, acb->stat[0]); 736 } 737 } 738 739 sc->sc_flags |= SIOP_ALIVE; 740 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 741 /* enable SCSI and DMA interrupts */ 742 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 743 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 744 SIOP_SIEN_RST | SIOP_SIEN_PAR; 745 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 746 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 747 rp->siop_sien = sc->sc_sien; 748 rp->siop_dien = sc->sc_dien; 749 /*siopng_dump_registers(sc);*/ 750 } 751 752 /* 753 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 754 */ 755 756 void 757 siopng_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, 758 int clen, u_char *buf, int len) 759 { 760 siop_regmap_p rp = sc->sc_siopp; 761 int nchain; 762 int count, tcount; 763 char *addr, *dmaend; 764 struct siop_acb *acb = sc->sc_nexus; 765 #ifdef DEBUG 766 int i; 767 #endif 768 769 #ifdef DEBUG 770 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 771 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 772 rp, &siopng_scripts, &acb->ds, sc->sc_active); 773 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 774 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 775 rp->siop_sien, rp->siop_dien); 776 #ifdef DDB 777 /*Debugger();*/ 778 #endif 779 } 780 #endif 781 acb->msgout[0] = MSG_IDENTIFY | lun; 782 if (siopng_allow_disc[target] & 2 || 783 (siopng_allow_disc[target] && len == 0)) 784 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 785 acb->status = 0; 786 acb->stat[0] = -1; 787 acb->msg[0] = -1; 788 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 789 (sc->sc_sync[target].scntl3 << 24); 790 acb->ds.idlen = 1; 791 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 792 acb->ds.cmdlen = clen; 793 acb->ds.cmdbuf = (char *) kvtop(cbuf); 794 acb->ds.stslen = 1; 795 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 796 acb->ds.msglen = 1; 797 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 798 acb->msg[1] = -1; 799 acb->ds.msginlen = 1; 800 acb->ds.extmsglen = 1; 801 acb->ds.synmsglen = 3; 802 acb->ds.msginbuf = acb->ds.msgbuf + 1; 803 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 804 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 805 memset(&acb->ds.chain, 0, sizeof (acb->ds.chain)); 806 807 if (sc->sc_sync[target].state == NEG_WIDE) { 808 if (siopng_inhibit_wide[target]) { 809 sc->sc_sync[target].state = NEG_SYNC; 810 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 811 #ifdef DEBUG 812 if (siopngsync_debug) 813 printf ("Forcing target %d narrow\n", target); 814 #endif 815 } 816 else { 817 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 818 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 819 acb->msg[2] = -1; 820 acb->msgout[1] = MSG_EXT_MESSAGE; 821 acb->msgout[2] = 2; 822 acb->msgout[3] = MSG_WIDE_REQ; 823 acb->msgout[4] = 1; 824 acb->ds.idlen = 5; 825 acb->ds.synmsglen = 2; 826 sc->sc_sync[target].state = NEG_WAITW; 827 #ifdef DEBUG 828 if (siopngsync_debug) 829 printf("Sending wide request to target %d\n", target); 830 #endif 831 } 832 } 833 if (sc->sc_sync[target].state == NEG_SYNC) { 834 if (siopng_inhibit_sync[target]) { 835 sc->sc_sync[target].state = NEG_DONE; 836 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 837 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 838 sc->sc_sync[target].sxfer = 0; 839 #ifdef DEBUG 840 if (siopngsync_debug) 841 printf ("Forcing target %d asynchronous\n", target); 842 #endif 843 } 844 else { 845 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 846 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 847 acb->msg[2] = -1; 848 acb->msgout[1] = MSG_EXT_MESSAGE; 849 acb->msgout[2] = 3; 850 acb->msgout[3] = MSG_SYNC_REQ; 851 #ifdef MAXTOR_SYNC_KLUDGE 852 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 853 #else 854 acb->msgout[4] = sc->sc_minsync; 855 #endif 856 acb->msgout[5] = SIOP_MAX_OFFSET; 857 acb->ds.idlen = 6; 858 sc->sc_sync[target].state = NEG_WAITS; 859 #ifdef DEBUG 860 if (siopngsync_debug) 861 printf ("Sending sync request to target %d\n", target); 862 #endif 863 } 864 } 865 866 /* 867 * Build physical DMA addresses for scatter/gather I/O 868 */ 869 acb->iob_buf = buf; 870 acb->iob_len = len; 871 acb->iob_curbuf = acb->iob_curlen = 0; 872 nchain = 0; 873 count = len; 874 addr = buf; 875 dmaend = NULL; 876 while (count > 0) { 877 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 878 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET))) 879 tcount = count; 880 881 #if DEBUG_ONLY_IF_DESPERATE 882 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 883 nchain, count, tcount, addr, 884 acb->ds.chain[nchain].databuf); 885 #endif 886 acb->ds.chain[nchain].datalen = tcount; 887 addr += tcount; 888 count -= tcount; 889 if (acb->ds.chain[nchain].databuf == dmaend) { 890 dmaend += acb->ds.chain[nchain].datalen; 891 acb->ds.chain[nchain].datalen = 0; 892 acb->ds.chain[--nchain].datalen += tcount; 893 #ifdef DEBUG 894 ++siopngdma_hits; 895 #endif 896 } 897 else { 898 dmaend = acb->ds.chain[nchain].databuf + 899 acb->ds.chain[nchain].datalen; 900 acb->ds.chain[nchain].datalen = tcount; 901 #ifdef DEBUG 902 if (nchain) /* Don't count miss on first one */ 903 ++siopngdma_misses; 904 #endif 905 } 906 ++nchain; 907 } 908 #ifdef DEBUG 909 if (nchain != 1 && len != 0 && siopng_debug & 3) { 910 printf ("DMA chaining set: %d\n", nchain); 911 for (i = 0; i < nchain; ++i) { 912 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 913 acb->ds.chain[i].datalen); 914 } 915 } 916 #endif 917 918 /* push data cache for all data the 53c720/770 needs to access */ 919 dma_cachectl ((void *)acb, sizeof (struct siop_acb)); 920 dma_cachectl (cbuf, clen); 921 if (buf != NULL && len != 0) 922 dma_cachectl (buf, len); 923 #ifdef DEBUG 924 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 925 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 926 rp, &siopng_scripts, &acb->ds, sc->sc_active); 927 #ifdef DDB 928 /*Debugger();*/ 929 #endif 930 } 931 #endif 932 if (sc->nexus_list.tqh_first == NULL) { 933 callout_reset(&acb->xs->xs_callout, 934 mstohz(acb->xs->timeout) + 1, siopng_timeout, acb); 935 if (rp->siop_istat & SIOP_ISTAT_CON) 936 printf("%s: siopng_select while connected?\n", 937 sc->sc_dev.dv_xname); 938 rp->siop_temp = 0; 939 #ifndef FIXME 940 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 941 #endif 942 amiga_membarrier(); 943 rp->siop_dsa = kvtop((void *)&acb->ds); 944 amiga_membarrier(); 945 rp->siop_dsp = sc->sc_scriptspa; 946 amiga_membarrier(); 947 SIOP_TRACE('s',1,0,0) 948 } else { 949 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 950 rp->siop_istat = SIOP_ISTAT_SIGP; 951 SIOP_TRACE('s',2,0,0); 952 } 953 else { 954 SIOP_TRACE('s',3,rp->siop_istat,0); 955 } 956 } 957 #ifdef DEBUG 958 ++siopngstarts; 959 #endif 960 } 961 962 /* 963 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 964 */ 965 966 int 967 siopng_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 968 u_short sist, int *status) 969 { 970 siop_regmap_p rp = sc->sc_siopp; 971 struct siop_acb *acb = sc->sc_nexus; 972 int target = 0; 973 int dfifo, dbc, sstat0, sstat1, sstat2; 974 975 dfifo = rp->siop_dfifo; 976 dbc = rp->siop_dbc0; 977 sstat0 = rp->siop_sstat0; 978 sstat1 = rp->siop_sstat1; 979 sstat2 = rp->siop_sstat2; 980 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 981 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 982 ; 983 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 984 #ifdef DEBUG 985 ++siopngints; 986 #if 0 987 if (siopng_debug & 0x100) { 988 DCIAS(&acb->stat[0]); /* XXX */ 989 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 990 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 991 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 992 acb->msg[0], acb->msg[1], acb->msg[2], 993 acb->msg[3], acb->msg[4], acb->msg[5]); 994 } 995 #endif 996 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 997 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 998 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 999 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 1000 sc->sc_scriptspa + sizeof(siopng_scripts)); 1001 printf(" istat %x dstat %x sist %x\n", 1002 istat, dstat, sist); 1003 #ifdef DDB 1004 Debugger(); 1005 #endif 1006 } 1007 #endif 1008 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 1009 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 1010 /* Normal completion status, or check condition */ 1011 #ifdef DEBUG 1012 if (rp->siop_dsa != kvtop((void *)&acb->ds)) { 1013 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 1014 (unsigned)kvtop((void *)&acb->ds)); 1015 panic("*** siopng DSA invalid ***"); 1016 } 1017 #endif 1018 target = acb->xs->xs_periph->periph_target; 1019 if (sc->sc_sync[target].state == NEG_WAITW) { 1020 if (acb->msg[1] == 0xff) 1021 printf ("%s: target %d ignored wide request\n", 1022 sc->sc_dev.dv_xname, target); 1023 else if (acb->msg[1] == MSG_REJECT) 1024 printf ("%s: target %d rejected wide request\n", 1025 sc->sc_dev.dv_xname, target); 1026 else { 1027 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 1028 sc->sc_dev.dv_xname, target, acb->msg[1], 1029 acb->msg[2], acb->msg[3], acb->msg[4]); 1030 if (acb->msg[1] == MSG_EXT_MESSAGE && 1031 acb->msg[2] == 2 && 1032 acb->msg[3] == MSG_WIDE_REQ) 1033 sc->sc_sync[target].scntl3 = acb->msg[4] ? 1034 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 1035 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 1036 } 1037 sc->sc_sync[target].state = NEG_SYNC; 1038 } 1039 if (sc->sc_sync[target].state == NEG_WAITS) { 1040 if (acb->msg[1] == 0xff) 1041 printf ("%s: target %d ignored sync request\n", 1042 sc->sc_dev.dv_xname, target); 1043 else if (acb->msg[1] == MSG_REJECT) 1044 printf ("%s: target %d rejected sync request\n", 1045 sc->sc_dev.dv_xname, target); 1046 else 1047 /* XXX - need to set sync transfer parameters */ 1048 printf("%s: target %d (sync) %02x %02x %02x\n", 1049 sc->sc_dev.dv_xname, target, acb->msg[1], 1050 acb->msg[2], acb->msg[3]); 1051 sc->sc_sync[target].state = NEG_DONE; 1052 } 1053 dma_cachectl(&acb->stat[0], 1); 1054 *status = acb->stat[0]; 1055 #ifdef DEBUG 1056 if (rp->siop_sbcl & SIOP_BSY) { 1057 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1058 rp, &siopng_scripts, &acb->ds);*/ 1059 #ifdef DDB 1060 /*Debugger();*/ 1061 #endif 1062 } 1063 if (acb->msg[0] != 0x00) 1064 printf("%s: message was not COMMAND COMPLETE: %x\n", 1065 sc->sc_dev.dv_xname, acb->msg[0]); 1066 #endif 1067 if (sc->nexus_list.tqh_first) 1068 rp->siop_dcntl |= SIOP_DCNTL_STD; 1069 return 1; 1070 } 1071 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1072 target = acb->xs->xs_periph->periph_target; 1073 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1074 acb->msg[3] == MSG_WIDE_REQ) { 1075 #ifdef DEBUG 1076 if (siopngsync_debug) 1077 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1078 acb->msg[0], acb->msg[1], acb->msg[2], 1079 acb->msg[3], acb->msg[4], acb->msg[5]); 1080 #endif 1081 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1082 if (acb->msg[2] == 2 && 1083 acb->msg[3] == MSG_WIDE_REQ && 1084 acb->msg[4] != 0) { 1085 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1086 printf ("%s: target %d now wide %d\n", 1087 sc->sc_dev.dv_xname, target, 1088 acb->msg[4]); 1089 } 1090 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1091 amiga_membarrier(); 1092 if (sc->sc_sync[target].state == NEG_WAITW) { 1093 sc->sc_sync[target].state = NEG_SYNC; 1094 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1095 amiga_membarrier(); 1096 return(0); 1097 } 1098 rp->siop_dcntl |= SIOP_DCNTL_STD; 1099 amiga_membarrier(); 1100 sc->sc_sync[target].state = NEG_SYNC; 1101 return (0); 1102 } 1103 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1104 acb->msg[3] == MSG_SYNC_REQ) { 1105 #ifdef DEBUG 1106 if (siopngsync_debug) 1107 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1108 acb->msg[0], acb->msg[1], acb->msg[2], 1109 acb->msg[3], acb->msg[4], acb->msg[5]); 1110 #endif 1111 sc->sc_sync[target].sxfer = 0; 1112 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1113 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1114 if (acb->msg[2] == 3 && 1115 acb->msg[3] == MSG_SYNC_REQ && 1116 acb->msg[5] != 0) { 1117 #ifdef MAXTOR_KLUDGE 1118 /* 1119 * Kludge for my Maxtor XT8580S 1120 * It accepts whatever we request, even 1121 * though it won't work. So we ask for 1122 * a short period than we can handle. If 1123 * the device says it can do it, use 208ns. 1124 * If the device says it can do less than 1125 * 100ns, then we limit it to 100ns. 1126 */ 1127 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1128 #ifdef DEBUG 1129 printf ("%d: target %d wanted %dns period\n", 1130 sc->sc_dev.dv_xname, target, 1131 acb->msg[4] * 4); 1132 #endif 1133 if (acb->msg[4] == 50 / 4) 1134 acb->msg[4] = 208 / 4; 1135 else 1136 acb->msg[4] = 100 / 4; 1137 } 1138 #endif /* MAXTOR_KLUDGE */ 1139 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1140 sc->sc_dev.dv_xname, target, 1141 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4, 1142 acb->msg[5]); 1143 scsi_period_to_siopng (sc, target); 1144 } 1145 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1146 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1147 amiga_membarrier(); 1148 if (sc->sc_sync[target].state == NEG_WAITS) { 1149 sc->sc_sync[target].state = NEG_DONE; 1150 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1151 amiga_membarrier(); 1152 return(0); 1153 } 1154 rp->siop_dcntl |= SIOP_DCNTL_STD; 1155 amiga_membarrier(); 1156 sc->sc_sync[target].state = NEG_DONE; 1157 return (0); 1158 } 1159 /* XXX - not SDTR message */ 1160 } 1161 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1162 #ifdef DEBUG 1163 ++siopngphmm; 1164 if (acb == NULL) 1165 printf("%s: Phase mismatch with no active command?\n", 1166 sc->sc_dev.dv_xname); 1167 #endif 1168 if (acb->iob_len) { 1169 int adjust; 1170 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1171 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1172 ++adjust; 1173 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1174 ++adjust; 1175 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1176 ++adjust; 1177 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1178 ++adjust; 1179 acb->iob_curlen = 1180 *((long *)__UNVOLATILE(&rp->siop_dcmd)) & 0xffffff; 1181 acb->iob_curlen += adjust; 1182 acb->iob_curbuf = 1183 *((long *)__UNVOLATILE(&rp->siop_dnad)) - adjust; 1184 #ifdef DEBUG 1185 if (siopng_debug & 0x100) { 1186 int i; 1187 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1188 acb->iob_curbuf, acb->iob_curlen, dfifo, 1189 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1190 if (acb->ds.chain[1].datalen) { 1191 for (i = 0; acb->ds.chain[i].datalen; ++i) 1192 printf("chain[%d] addr %p len %lx\n", 1193 i, acb->ds.chain[i].databuf, 1194 acb->ds.chain[i].datalen); 1195 } 1196 } 1197 #endif 1198 dma_cachectl ((void *)acb, sizeof(*acb)); 1199 } 1200 #ifdef DEBUG 1201 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1202 if (siopng_debug & 9) 1203 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1204 rp->siop_sbcl, 1205 rp->siop_dsp - sc->sc_scriptspa, 1206 *((volatile long *)&rp->siop_dcmd)); 1207 #endif 1208 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1209 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1210 rp->siop_sbcl, rp->siop_dsp); 1211 #if defined(DEBUG) && defined(DDB) 1212 Debugger(); 1213 #endif 1214 } 1215 switch (rp->siop_sbcl & 7) { 1216 case 0: /* data out */ 1217 case 1: /* data in */ 1218 case 2: /* status */ 1219 case 3: /* command */ 1220 case 6: /* message in */ 1221 case 7: /* message out */ 1222 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1223 amiga_membarrier(); 1224 break; 1225 default: 1226 goto bad_phase; 1227 } 1228 return 0; 1229 } 1230 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1231 #ifdef DEBUG 1232 if (acb == NULL) 1233 printf("%s: Select timeout with no active command?\n", 1234 sc->sc_dev.dv_xname); 1235 if (rp->siop_sbcl & SIOP_BSY) { 1236 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1237 rp, &siopng_scripts, &acb->ds); 1238 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1239 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1240 if (!(rp->siop_sbcl & SIOP_BSY)) { 1241 printf ("Yikes, it's not busy now!\n"); 1242 #if 0 1243 *status = -1; 1244 if (sc->nexus_list.tqh_first) { 1245 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1246 amiga_membarrier(); 1247 } 1248 return 1; 1249 #endif 1250 } 1251 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1252 return (0); 1253 #ifdef DDB 1254 Debugger(); 1255 #endif 1256 } 1257 #endif 1258 *status = -1; 1259 acb->xs->error = XS_SELTIMEOUT; 1260 if (sc->nexus_list.tqh_first) { 1261 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1262 amiga_membarrier(); 1263 } 1264 return 1; 1265 } 1266 if (acb) 1267 target = acb->xs->xs_periph->periph_target; 1268 else 1269 target = 7; 1270 if (sist & SIOP_SIST_UDC) { 1271 #ifdef DEBUG 1272 if (acb == NULL) 1273 printf("%s: Unexpected disconnect with no active command?\n", 1274 sc->sc_dev.dv_xname); 1275 printf ("%s: target %d disconnected unexpectedly\n", 1276 sc->sc_dev.dv_xname, target); 1277 siopng_dump_registers(sc); 1278 siopng_dump(sc); 1279 #endif 1280 #if 0 1281 siopngabort (sc, rp, "siopngchkintr"); 1282 #endif 1283 *status = STS_BUSY; 1284 if (sc->nexus_list.tqh_first) { 1285 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1286 amiga_membarrier(); 1287 } 1288 return (acb != NULL); 1289 } 1290 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1291 rp->siop_dsps == 0xff02)) { 1292 #ifdef DEBUG 1293 if (siopng_debug & 0x100) 1294 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", 1295 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1296 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1297 acb->iob_curbuf, acb->iob_curlen, 1298 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1299 #endif 1300 if (acb == NULL) { 1301 printf("%s: Disconnect with no active command?\n", 1302 sc->sc_dev.dv_xname); 1303 return (0); 1304 } 1305 /* 1306 * XXXX need to update iob_curbuf/iob_curlen to reflect 1307 * current data transferred. If device disconnected in 1308 * the middle of a DMA block, they should already be set 1309 * by the phase change interrupt. If the disconnect 1310 * occurs on a DMA block boundary, we have to figure out 1311 * which DMA block it was. 1312 */ 1313 if (acb->iob_len && rp->siop_temp) { 1314 int n = rp->siop_temp - sc->sc_scriptspa; 1315 1316 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1317 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1318 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1319 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1320 if (n < Ent_datain) 1321 n = (n - Ent_dataout) / 16; 1322 else 1323 n = (n - Ent_datain) / 16; 1324 if (n <= 0 && n > DMAMAXIO) 1325 printf("TEMP invalid %d\n", n); 1326 else { 1327 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1328 acb->iob_curlen = acb->ds.chain[n].datalen; 1329 } 1330 #ifdef DEBUG 1331 if (siopng_debug & 0x100) { 1332 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1333 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1334 acb->iob_curlen); 1335 } 1336 #endif 1337 } 1338 /* 1339 * If data transfer was interrupted by disconnect, iob_curbuf 1340 * and iob_curlen should reflect the point of interruption. 1341 * Adjust the DMA chain so that the data transfer begins 1342 * at the appropriate place upon reselection. 1343 * XXX This should only be done on save data pointer message? 1344 */ 1345 if (acb->iob_curlen) { 1346 int i, j; 1347 1348 #ifdef DEBUG 1349 if (siopng_debug & 0x100) 1350 printf ("%s: adjusting DMA chain\n", 1351 sc->sc_dev.dv_xname); 1352 if (rp->siop_dsps == 0xff02) 1353 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1354 sc->sc_dev.dv_xname, 1 << target); 1355 #endif 1356 for (i = 0; i < DMAMAXIO; ++i) { 1357 if (acb->ds.chain[i].datalen == 0) 1358 break; 1359 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1360 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1361 acb->ds.chain[i].datalen)) 1362 break; 1363 } 1364 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1365 printf("couldn't find saved data pointer: "); 1366 printf("curbuf %lx curlen %lx i %d\n", 1367 acb->iob_curbuf, acb->iob_curlen, i); 1368 #ifdef DDB 1369 Debugger(); 1370 #endif 1371 } 1372 #ifdef DEBUG 1373 if (siopng_debug & 0x100) 1374 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1375 acb->ds.chain[0].databuf, 1376 acb->ds.chain[0].datalen, 1377 acb->iob_curbuf, 1378 acb->iob_curlen); 1379 #endif 1380 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1381 acb->ds.chain[0].datalen = acb->iob_curlen; 1382 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1383 #ifdef DEBUG 1384 if (siopng_debug & 0x100) 1385 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1386 acb->ds.chain[j].databuf, 1387 acb->ds.chain[j].datalen, 1388 acb->ds.chain[i].databuf, 1389 acb->ds.chain[i].datalen); 1390 #endif 1391 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1392 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1393 } 1394 if (j < DMAMAXIO) 1395 acb->ds.chain[j].datalen = 0; 1396 DCIAS(kvtop((void *)&acb->ds.chain)); 1397 } 1398 ++sc->sc_tinfo[target].dconns; 1399 /* 1400 * add nexus to waiting list 1401 * clear nexus 1402 * try to start another command for another target/lun 1403 */ 1404 acb->status = sc->sc_flags & SIOP_INTSOFF; 1405 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1406 sc->sc_nexus = NULL; /* no current device */ 1407 /* start script to wait for reselect */ 1408 if (sc->sc_nexus == NULL) { 1409 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1410 amiga_membarrier(); 1411 } 1412 /* XXXX start another command ? */ 1413 if (sc->ready_list.tqh_first) 1414 siopng_sched(sc); 1415 #if 0 1416 else 1417 rp->siop_dcntl |= SIOP_DCNTL_STD; 1418 #endif 1419 return (0); 1420 } 1421 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1422 int reselid = rp->siop_scratcha & 0x7f; 1423 int reselun = rp->siop_sfbr & 0x07; 1424 1425 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1426 #ifdef DEBUG 1427 if (siopng_debug & 0x100) 1428 printf ("%s: target ID %02x reselected dsps %lx\n", 1429 sc->sc_dev.dv_xname, reselid, 1430 rp->siop_dsps); 1431 if ((rp->siop_sfbr & 0x80) == 0) 1432 printf("%s: Reselect message in was not identify: %x\n", 1433 sc->sc_dev.dv_xname, rp->siop_sfbr); 1434 #endif 1435 if (sc->sc_nexus) { 1436 #ifdef DEBUG 1437 if (siopng_debug & 0x100) 1438 printf ("%s: reselect ID %02x w/active\n", 1439 sc->sc_dev.dv_xname, reselid); 1440 #endif 1441 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1442 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1443 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1444 --sc->sc_active; 1445 } 1446 /* 1447 * locate acb of reselecting device 1448 * set sc->sc_nexus to acb 1449 */ 1450 for (acb = sc->nexus_list.tqh_first; acb; 1451 acb = acb->chain.tqe_next) { 1452 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1453 reselun != (acb->msgout[0] & 0x07)) 1454 continue; 1455 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1456 sc->sc_nexus = acb; 1457 sc->sc_flags |= acb->status; 1458 acb->status = 0; 1459 DCIAS(kvtop(&acb->stat[0])); 1460 rp->siop_dsa = kvtop((void *)&acb->ds); 1461 amiga_membarrier(); 1462 rp->siop_sxfer = 1463 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1464 #ifndef FIXME 1465 rp->siop_scntl3 = 1466 sc->sc_sync[acb->xs->xs_periph->periph_target].scntl3; 1467 amiga_membarrier(); 1468 #endif 1469 break; 1470 } 1471 if (acb == NULL) { 1472 printf("%s: target ID %02x reselect nexus_list %p\n", 1473 sc->sc_dev.dv_xname, reselid, 1474 sc->nexus_list.tqh_first); 1475 panic("unable to find reselecting device"); 1476 } 1477 dma_cachectl ((void *)acb, sizeof(*acb)); 1478 rp->siop_temp = 0; 1479 rp->siop_dcntl |= SIOP_DCNTL_STD; 1480 amiga_membarrier(); 1481 return (0); 1482 } 1483 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1484 #ifdef DEBUG 1485 u_short ctest2 = rp->siop_ctest2; 1486 1487 /* reselect was interrupted (by Sig_P or select) */ 1488 if (siopng_debug & 0x100 || 1489 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1490 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1491 sc->sc_dev.dv_xname, rp->siop_scntl1, 1492 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1493 #endif 1494 /* XXX assumes it was not select */ 1495 if (sc->sc_nexus == NULL) { 1496 #ifdef DEBUG 1497 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1498 sc->sc_dev.dv_xname); 1499 #if 0 1500 siopng_dump(sc); 1501 #ifdef DDB 1502 Debugger(); 1503 #endif 1504 #endif 1505 #endif 1506 rp->siop_dcntl |= SIOP_DCNTL_STD; 1507 return(0); 1508 } 1509 target = sc->sc_nexus->xs->xs_periph->periph_target; 1510 rp->siop_temp = 0; 1511 rp->siop_dsa = kvtop((void *)&sc->sc_nexus->ds); 1512 amiga_membarrier(); 1513 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1514 #ifndef FIXME 1515 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1516 amiga_membarrier(); 1517 #endif 1518 rp->siop_dsp = sc->sc_scriptspa; 1519 amiga_membarrier(); 1520 return (0); 1521 } 1522 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1523 if (acb == NULL) 1524 printf("%s: Bad message-in with no active command?\n", 1525 sc->sc_dev.dv_xname); 1526 /* Unrecognized message in byte */ 1527 dma_cachectl (&acb->msg[1],1); 1528 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1529 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1530 /* what should be done here? */ 1531 DCIAS(kvtop(&acb->msg[1])); 1532 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1533 amiga_membarrier(); 1534 return (0); 1535 } 1536 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1537 /* Status phase wasn't followed by message in phase? */ 1538 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1539 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1540 if (rp->siop_sbcl == 0xa7) { 1541 /* It is now, just continue the script? */ 1542 rp->siop_dcntl |= SIOP_DCNTL_STD; 1543 return (0); 1544 } 1545 } 1546 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1547 dma_cachectl (&acb->stat[0], 1); 1548 dma_cachectl (&acb->msg[0], 1); 1549 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1550 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1551 rp->siop_sbcl); 1552 siopngreset (sc); 1553 *status = -1; 1554 return 0; /* siopngreset has cleaned up */ 1555 } 1556 if (sist & SIOP_SIST_SGE) 1557 printf ("SIOP: SCSI Gross Error\n"); 1558 if (sist & SIOP_SIST_PAR) 1559 printf ("SIOP: Parity Error\n"); 1560 if (dstat & SIOP_DSTAT_IID) 1561 printf ("SIOP: Invalid instruction detected\n"); 1562 bad_phase: 1563 /* 1564 * temporary panic for unhandled conditions 1565 * displays various things about the 53C720/770 status and registers 1566 * then panics. 1567 * XXXX need to clean this up to print out the info, reset, and continue 1568 */ 1569 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1570 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", 1571 sc->sc_scriptspa, (unsigned)kvtop((void *)&acb->ds), 1572 (unsigned)kvtop((void *)__UNVOLATILE(rp)), rp->siop_dsp, 1573 *((long *)__UNVOLATILE(&rp->siop_dcmd))); 1574 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1575 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1576 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1577 #ifdef DEBUG 1578 if (siopng_debug & 0x20) 1579 panic("siopngchkintr: **** temp ****"); 1580 #endif 1581 #ifdef DDB 1582 Debugger (); 1583 #endif 1584 siopngreset (sc); /* hard reset */ 1585 *status = -1; 1586 return 0; /* siopngreset cleaned up */ 1587 } 1588 1589 void 1590 siopng_select(struct siop_softc *sc) 1591 { 1592 siop_regmap_p rp; 1593 struct siop_acb *acb = sc->sc_nexus; 1594 1595 #ifdef DEBUG 1596 if (siopng_debug & 1) 1597 printf ("%s: select ", sc->sc_dev.dv_xname); 1598 #endif 1599 1600 rp = sc->sc_siopp; 1601 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) { 1602 sc->sc_flags |= SIOP_INTSOFF; 1603 sc->sc_flags &= ~SIOP_INTDEFER; 1604 if ((rp->siop_istat & 0x08) == 0) { 1605 rp->siop_sien = 0; 1606 rp->siop_dien = 0; 1607 } 1608 #if 0 1609 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1610 sc->sc_flags &= ~SIOP_INTSOFF; 1611 if ((rp->siop_istat & 0x08) == 0) { 1612 rp->siop_sien = sc->sc_sien; 1613 rp->siop_dien = sc->sc_dien; 1614 } 1615 #endif 1616 } 1617 #ifdef DEBUG 1618 if (siopng_debug & 1) 1619 printf ("siopng_select: target %x cmd %02x ds %p\n", 1620 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1621 &sc->sc_nexus->ds); 1622 #endif 1623 1624 siopng_start(sc, acb->xs->xs_periph->periph_target, 1625 acb->xs->xs_periph->periph_lun, 1626 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1627 1628 return; 1629 } 1630 1631 /* 1632 * 53C720/770 interrupt handler 1633 */ 1634 1635 void 1636 siopngintr(register struct siop_softc *sc) 1637 { 1638 siop_regmap_p rp; 1639 u_char istat, dstat; 1640 u_short sist; 1641 int status; 1642 int s = splbio(); 1643 1644 istat = sc->sc_istat; 1645 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1646 splx(s); 1647 return; 1648 } 1649 1650 /* Got a valid interrupt on this device */ 1651 rp = sc->sc_siopp; 1652 dstat = sc->sc_dstat; 1653 sist = sc->sc_sist; 1654 if (dstat & SIOP_DSTAT_SIR) 1655 sc->sc_intcode = rp->siop_dsps; 1656 sc->sc_istat = 0; 1657 #ifdef DEBUG 1658 if (siopng_debug & 1) 1659 printf ("%s: intr istat %x dstat %x sist %x\n", 1660 sc->sc_dev.dv_xname, istat, dstat, sist); 1661 if (!sc->sc_active) { 1662 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1663 sc->sc_dev.dv_xname, istat, dstat, sist, 1664 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1665 } 1666 #endif 1667 1668 #ifdef DEBUG 1669 if (siopng_debug & 5) { 1670 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1671 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1672 sc->sc_dev.dv_xname, istat, dstat, sist, 1673 rp->siop_dsps, rp->siop_sbcl, 1674 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1675 } 1676 #endif 1677 if (sc->sc_flags & SIOP_INTDEFER) { 1678 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1679 rp->siop_sien = sc->sc_sien; 1680 rp->siop_dien = sc->sc_dien; 1681 } 1682 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1683 #if 1 1684 if (status == 0xff) 1685 printf ("siopngintr: status == 0xff\n"); 1686 #endif 1687 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1688 #if 0 1689 if (rp->siop_sbcl & SIOP_BSY) { 1690 printf ("%s: SCSI bus busy at completion", 1691 sc->sc_dev.dv_xname); 1692 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1693 sc->sc_nexus->xs->xs_periph->periph_target, 1694 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1695 rp->siop_dsp - sc->sc_scriptspa); 1696 } 1697 #endif 1698 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1699 sc->sc_nexus->stat[0] : -1); 1700 } 1701 } 1702 splx(s); 1703 } 1704 1705 /* 1706 * This is based on the Progressive Peripherals 33 MHz Zeus driver and will 1707 * not be correct for other 53c710 boards. 1708 * 1709 */ 1710 void 1711 scsi_period_to_siopng(struct siop_softc *sc, int target) 1712 { 1713 int period, offset, sxfer, scntl3 = 0; 1714 1715 period = sc->sc_nexus->msg[4]; 1716 offset = sc->sc_nexus->msg[5]; 1717 #ifdef FIXME 1718 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1719 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1720 if (sxfer >= 0 && sxfer <= 7) 1721 break; 1722 } 1723 if (scntl3 > 3) { 1724 printf("siopng sync: unable to compute sync params for period %dns\n", 1725 period * 4); 1726 /* 1727 * XXX need to pick a value we can do and renegotiate 1728 */ 1729 sxfer = scntl3 = 0; 1730 } else { 1731 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1732 offset : SIOP_MAX_OFFSET); 1733 #ifdef DEBUG_SYNC 1734 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1735 period * 4, sxfer, scntl3); 1736 printf(" actual period %dns\n", 1737 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1738 #endif /* DEBUG_SYNC */ 1739 } 1740 #else /* FIXME */ 1741 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1742 sxfer |= 0x20; /* XXX XFERP: 5 */ 1743 #ifndef FIXME 1744 if (period <= (50 / 4)) /* XXX */ 1745 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1746 else if (period <= (100 / 4)) 1747 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1748 else if (period <= (200 / 4)) 1749 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1750 else 1751 scntl3 = 0xff; /* XXX ??? */ 1752 #else 1753 scntl3 = 5; 1754 #endif 1755 #endif 1756 sc->sc_sync[target].sxfer = sxfer; 1757 sc->sc_sync[target].scntl3 = scntl3 | 1758 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1759 #ifdef DEBUG_SYNC 1760 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1761 #endif 1762 } 1763 1764 void 1765 siopng_dump_registers(struct siop_softc *sc) 1766 { 1767 siop_regmap_p rp = sc->sc_siopp; 1768 1769 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1770 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1771 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1772 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1773 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1774 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1775 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1776 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1777 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1778 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1779 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1780 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1781 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1782 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1783 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1784 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1785 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1786 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1787 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1788 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1789 printf(" sidl %04x sodl %04x sbdl %04x\n", 1790 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1791 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1792 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1793 rp->siop_dsp - sc->sc_scriptspa : 0); 1794 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1795 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1796 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1797 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1798 } 1799 1800 #ifdef DEBUG 1801 1802 #if SIOP_TRACE_SIZE 1803 void 1804 siopng_dump_trace(void) 1805 { 1806 int i; 1807 1808 printf("siopng trace: next index %d\n", siopng_trix); 1809 i = siopng_trix; 1810 do { 1811 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1812 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1813 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1814 } while (i != siopng_trix); 1815 } 1816 #endif 1817 1818 void 1819 siopng_dump_acb(struct siop_acb *acb) 1820 { 1821 u_char *b = (u_char *) &acb->cmd; 1822 int i; 1823 1824 printf("acb@%p ", acb); 1825 if (acb->xs == NULL) { 1826 printf("<unused>\n"); 1827 return; 1828 } 1829 printf("(%d:%d) flags %2x clen %2d cmd ", 1830 acb->xs->xs_periph->periph_target, 1831 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1832 for (i = acb->clen; i; --i) 1833 printf(" %02x", *b++); 1834 printf("\n"); 1835 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1836 acb->xs->datalen); 1837 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1838 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1839 } 1840 1841 void 1842 siopng_dump(struct siop_softc *sc) 1843 { 1844 struct siop_acb *acb; 1845 siop_regmap_p rp = sc->sc_siopp; 1846 int s; 1847 int i; 1848 1849 s = splbio(); 1850 #if SIOP_TRACE_SIZE 1851 siopng_dump_trace(); 1852 #endif 1853 printf("%s@%p regs %p istat %x\n", 1854 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1855 if ((acb = sc->free_list.tqh_first) > 0) { 1856 printf("Free list:\n"); 1857 while (acb) { 1858 siopng_dump_acb(acb); 1859 acb = acb->chain.tqe_next; 1860 } 1861 } 1862 if ((acb = sc->ready_list.tqh_first) > 0) { 1863 printf("Ready list:\n"); 1864 while (acb) { 1865 siopng_dump_acb(acb); 1866 acb = acb->chain.tqe_next; 1867 } 1868 } 1869 if ((acb = sc->nexus_list.tqh_first) > 0) { 1870 printf("Nexus list:\n"); 1871 while (acb) { 1872 siopng_dump_acb(acb); 1873 acb = acb->chain.tqe_next; 1874 } 1875 } 1876 if (sc->sc_nexus) { 1877 printf("Nexus:\n"); 1878 siopng_dump_acb(sc->sc_nexus); 1879 } 1880 for (i = 0; i < 8; ++i) { 1881 if (sc->sc_tinfo[i].cmds > 2) { 1882 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1883 i, sc->sc_tinfo[i].cmds, 1884 sc->sc_tinfo[i].dconns, 1885 sc->sc_tinfo[i].lubusy); 1886 } 1887 } 1888 splx(s); 1889 } 1890 #endif 1891