1 /* $NetBSD: siop2.c,v 1.44 2019/11/10 21:16:22 chs 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 1.44 2019/11/10 21:16:22 chs 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 #ifdef DIAGNOSTIC 216 struct scsipi_periph *periph; 217 #endif 218 struct siop_acb *acb; 219 struct siop_softc *sc = device_private(chan->chan_adapter->adapt_dev); 220 int flags, s; 221 222 switch (req) { 223 case ADAPTER_REQ_RUN_XFER: 224 xs = arg; 225 #ifdef DIAGNOSTIC 226 periph = xs->xs_periph; 227 #endif 228 flags = xs->xs_control; 229 230 /* XXXX ?? */ 231 if (flags & XS_CTL_DATA_UIO) 232 panic("siopng: scsi data uio requested"); 233 234 /* XXXX ?? */ 235 if (sc->sc_nexus && flags & XS_CTL_POLL) 236 /* panic("siopng_scsicmd: busy");*/ 237 printf("siopng_scsicmd: busy\n"); 238 239 s = splbio(); 240 acb = sc->free_list.tqh_first; 241 if (acb) { 242 TAILQ_REMOVE(&sc->free_list, acb, chain); 243 } 244 splx(s); 245 246 #ifdef DIAGNOSTIC 247 /* 248 * This should never happen as we track the resources 249 * in the mid-layer. 250 */ 251 if (acb == NULL) { 252 scsipi_printaddr(periph); 253 printf("unable to allocate acb\n"); 254 panic("siopng_scsipi_request"); 255 } 256 #endif 257 acb->flags = ACB_ACTIVE; 258 acb->xs = xs; 259 memcpy(&acb->cmd, xs->cmd, xs->cmdlen); 260 acb->clen = xs->cmdlen; 261 acb->daddr = xs->data; 262 acb->dleft = xs->datalen; 263 264 s = splbio(); 265 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 266 267 if (sc->sc_nexus == NULL) 268 siopng_sched(sc); 269 270 splx(s); 271 272 if (flags & XS_CTL_POLL || siopng_no_dma) 273 siopng_poll(sc, acb); 274 return; 275 276 case ADAPTER_REQ_GROW_RESOURCES: 277 return; 278 279 case ADAPTER_REQ_SET_XFER_MODE: 280 return; 281 } 282 } 283 284 void 285 siopng_poll(struct siop_softc *sc, struct siop_acb *acb) 286 { 287 siop_regmap_p rp = sc->sc_siopp; 288 struct scsipi_xfer *xs = acb->xs; 289 int i; 290 int status; 291 u_char istat; 292 u_char dstat; 293 u_short sist; 294 int s; 295 int to; 296 297 s = splbio(); 298 to = xs->timeout / 1000; 299 if (sc->nexus_list.tqh_first) 300 printf("%s: siopng_poll called with disconnected device\n", 301 device_xname(sc->sc_dev)); 302 for (;;) { 303 /* use cmd_wait values? */ 304 i = 50000; 305 /* XXX spl0(); */ 306 while (((istat = rp->siop_istat) & 307 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 308 if (--i <= 0) { 309 #ifdef DEBUG 310 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 311 xs->xs_periph->periph_target, acb->cmd.opcode, 312 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp, 313 rp->siop_dsp - sc->sc_scriptspa, 314 *((volatile long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 315 #endif 316 i = 50000; 317 --to; 318 if (to <= 0) { 319 siopngreset(sc); 320 return; 321 } 322 } 323 delay(20); 324 } 325 sist = rp->siop_sist; 326 dstat = rp->siop_dstat; 327 if (siopng_checkintr(sc, istat, dstat, sist, &status)) { 328 if (acb != sc->sc_nexus) 329 printf("%s: siopng_poll disconnected device completed\n", 330 device_xname(sc->sc_dev)); 331 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 332 sc->sc_flags &= ~SIOP_INTSOFF; 333 rp->siop_sien = sc->sc_sien; 334 rp->siop_dien = sc->sc_dien; 335 } 336 siopng_scsidone(sc->sc_nexus, status); 337 } 338 if (xs->xs_status & XS_STS_DONE) 339 break; 340 } 341 splx(s); 342 } 343 344 /* 345 * start next command that's ready 346 */ 347 void 348 siopng_sched(struct siop_softc *sc) 349 { 350 struct scsipi_periph *periph; 351 struct siop_acb *acb; 352 int i; 353 354 #ifdef DEBUG 355 if (sc->sc_nexus) { 356 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n", 357 device_xname(sc->sc_dev), sc->sc_nexus, 358 sc->sc_nexus->xs->xs_periph->periph_target, 359 sc->ready_list.tqh_first, 360 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 361 return; 362 } 363 #endif 364 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 365 periph = acb->xs->xs_periph; 366 i = periph->periph_target; 367 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 368 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 369 370 TAILQ_REMOVE(&sc->ready_list, acb, chain); 371 sc->sc_nexus = acb; 372 periph = acb->xs->xs_periph; 373 ti = &sc->sc_tinfo[periph->periph_target]; 374 ti->lubusy |= (1 << periph->periph_lun); 375 break; 376 } 377 } 378 379 if (acb == NULL) { 380 #ifdef DEBUGXXX 381 printf("%s: siopng_sched didn't find ready command\n", 382 device_xname(sc->sc_dev)); 383 #endif 384 return; 385 } 386 387 if (acb->xs->xs_control & XS_CTL_RESET) 388 siopngreset(sc); 389 390 #if 0 391 acb->cmd.bytes[0] |= periph->periph_lun << 5; /* XXXX */ 392 #endif 393 ++sc->sc_active; 394 siopng_select(sc); 395 } 396 397 void 398 siopng_scsidone(struct siop_acb *acb, int stat) 399 { 400 struct scsipi_xfer *xs; 401 struct scsipi_periph *periph; 402 struct siop_softc *sc; 403 int dosched = 0; 404 405 if (acb == NULL || (xs = acb->xs) == NULL) { 406 #ifdef DIAGNOSTIC 407 printf("siopng_scsidone: NULL acb or scsipi_xfer\n"); 408 #if defined(DEBUG) && defined(DDB) 409 Debugger(); 410 #endif 411 #endif 412 return; 413 } 414 415 callout_stop(&xs->xs_callout); 416 417 periph = xs->xs_periph; 418 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); 419 420 xs->status = stat; 421 xs->resid = 0; /* XXXX */ 422 423 if (xs->error == XS_NOERROR) { 424 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 425 xs->error = XS_BUSY; 426 } 427 428 /* 429 * Remove the ACB from whatever queue it's on. We have to do a bit of 430 * a hack to figure out which queue it's on. Note that it is *not* 431 * necessary to cdr down the ready queue, but we must cdr down the 432 * nexus queue and see if it's there, so we can mark the unit as no 433 * longer busy. This code is sickening, but it works. 434 */ 435 if (acb == sc->sc_nexus) { 436 sc->sc_nexus = NULL; 437 sc->sc_tinfo[periph->periph_target].lubusy &= 438 ~(1<<periph->periph_lun); 439 if (sc->ready_list.tqh_first) 440 dosched = 1; /* start next command */ 441 --sc->sc_active; 442 SIOP_TRACE('d','a',stat,0) 443 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 444 TAILQ_REMOVE(&sc->ready_list, acb, chain); 445 SIOP_TRACE('d','r',stat,0) 446 } else { 447 register struct siop_acb *acb2; 448 for (acb2 = sc->nexus_list.tqh_first; acb2; 449 acb2 = acb2->chain.tqe_next) 450 if (acb2 == acb) { 451 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 452 sc->sc_tinfo[periph->periph_target].lubusy 453 &= ~(1<<periph->periph_lun); 454 --sc->sc_active; 455 break; 456 } 457 if (acb2) 458 ; 459 else if (acb->chain.tqe_next) { 460 TAILQ_REMOVE(&sc->ready_list, acb, chain); 461 --sc->sc_active; 462 } else { 463 printf("%s: can't find matching acb\n", 464 device_xname(sc->sc_dev)); 465 #ifdef DDB 466 /* Debugger(); */ 467 #endif 468 } 469 SIOP_TRACE('d','n',stat,0); 470 } 471 /* Put it on the free list. */ 472 acb->flags = ACB_FREE; 473 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 474 475 sc->sc_tinfo[periph->periph_target].cmds++; 476 477 scsipi_done(xs); 478 479 if (dosched && sc->sc_nexus == NULL) 480 siopng_sched(sc); 481 } 482 483 void 484 siopngabort(register struct siop_softc *sc, siop_regmap_p rp, const char *where) 485 { 486 #ifdef fix_this 487 int i; 488 #endif 489 490 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n", 491 device_xname(sc->sc_dev), 492 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist, 493 rp->siop_sien, rp->siop_sbcl); 494 siopng_dump_registers(sc); 495 496 if (sc->sc_active > 0) { 497 #ifdef TODO 498 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 499 WAIT_CIP (rp); 500 501 GET_SBIC_asr (rp, asr); 502 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 503 { 504 /* ok, get more drastic.. */ 505 506 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 507 delay(25); 508 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 509 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 510 511 return; 512 } 513 514 do 515 { 516 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 517 GET_SBIC_csr (rp, csr); 518 } 519 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 520 && (csr != SBIC_CSR_CMD_INVALID)); 521 #endif 522 523 /* lets just hope it worked.. */ 524 #ifdef fix_this 525 for (i = 0; i < 2; ++i) { 526 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 527 sc->sc_cur) { 528 printf ("siopngabort: cleanup!\n"); 529 sc->sc_iob[i].sc_xs = NULL; 530 } 531 } 532 #endif /* fix_this */ 533 /* sc->sc_active = 0; */ 534 } 535 } 536 537 void 538 siopnginitialize(struct siop_softc *sc) 539 { 540 int i; 541 u_int inhibit_sync; 542 extern u_long scsi_nosync; 543 extern int shift_nosync; 544 545 /* 546 * Need to check that scripts is on a long word boundary 547 * Also should verify that dev doesn't span non-contiguous 548 * physical pages. 549 */ 550 sc->sc_scriptspa = kvtop((void *)__UNCONST(siopng_scripts)); 551 552 /* 553 * malloc sc_acb to ensure that DS is on a long word boundary. 554 */ 555 556 sc->sc_acb = malloc(sizeof(struct siop_acb) * SIOP_NACB, 557 M_DEVBUF, M_WAITOK); 558 559 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 560 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 561 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 562 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 563 if (sc->sc_minsync < 25) 564 sc->sc_minsync = 25; 565 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */ 566 if (sc->sc_clock_freq <= 25) { 567 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 568 sc->sc_tcp[0] = sc->sc_tcp[1]; 569 } else if (sc->sc_clock_freq <= 37) { 570 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 571 sc->sc_tcp[0] = sc->sc_tcp[2]; 572 } else if (sc->sc_clock_freq <= 50) { 573 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 574 sc->sc_tcp[0] = sc->sc_tcp[3]; 575 } else { 576 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 577 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 578 } 579 580 if (scsi_nosync) { 581 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff; 582 shift_nosync += 16; /* XXX maxtarget */ 583 #ifdef DEBUG 584 if (inhibit_sync) 585 printf("%s: Inhibiting synchronous transfer %02x\n", 586 device_xname(sc->sc_dev), inhibit_sync); 587 #endif 588 for (i = 0; i < 16; ++i) /* XXX maxtarget */ 589 if (inhibit_sync & (1 << i)) 590 siopng_inhibit_sync[i] = 1; 591 } 592 593 siopngreset (sc); 594 } 595 596 void 597 siopng_timeout(void *arg) 598 { 599 struct siop_acb *acb; 600 struct scsipi_periph *periph; 601 struct siop_softc *sc; 602 int s; 603 604 acb = arg; 605 periph = acb->xs->xs_periph; 606 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); 607 scsipi_printaddr(periph); 608 printf("timed out\n"); 609 610 s = splbio(); 611 612 acb->xs->error = XS_TIMEOUT; 613 siopngreset(sc); 614 615 splx(s); 616 } 617 618 void 619 siopngreset(struct siop_softc *sc) 620 { 621 siop_regmap_p rp; 622 u_int i, s; 623 u_short dummy; 624 struct siop_acb *acb; 625 626 rp = sc->sc_siopp; 627 628 if (sc->sc_flags & SIOP_ALIVE) 629 siopngabort(sc, rp, "reset"); 630 631 printf("%s: ", device_xname(sc->sc_dev)); /* XXXX */ 632 633 s = splbio(); 634 635 /* 636 * Reset the chip 637 * XXX - is this really needed? 638 */ 639 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 640 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 641 rp->siop_istat &= ~SIOP_ISTAT_RST; 642 /* 643 * Reset SCSI bus (do we really want this?) 644 */ 645 rp->siop_sien = 0; 646 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 647 delay(1); 648 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 649 650 /* 651 * Set up various chip parameters 652 */ 653 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */ 654 delay(20); 655 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */ 656 rp->siop_scntl3 = 0x15; /* SCF/CCF*/ 657 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */ 658 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */ 659 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG; 660 rp->siop_dcntl = sc->sc_dcntl; 661 rp->siop_dmode = 0xc0; /* XXX burst length */ 662 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 663 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 664 rp->siop_scid = sc->sc_channel.chan_id | 665 SIOP_SCID_RRE | SIOP_SCID_SRE; 666 rp->siop_respid = 1 << sc->sc_channel.chan_id; 667 rp->siop_dwt = 0x00; 668 rp->siop_stime0 = 0x0c; /* XXXXX check */ 669 670 /* will need to re-negotiate sync xfers */ 671 memset(&sc->sc_sync, 0, sizeof (sc->sc_sync)); 672 673 i = rp->siop_istat; 674 if (i & SIOP_ISTAT_SIP) 675 dummy = rp->siop_sist; 676 if (i & SIOP_ISTAT_DIP) 677 dummy = rp->siop_dstat; 678 679 __USE(dummy); 680 splx (s); 681 682 delay (siopng_reset_delay * 1000); 683 684 /* 685 * is lower half unterminated? 686 */ 687 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) { 688 printf(" no SCSI termination, host adapter deactivated.\n"); 689 sc->sc_channel.chan_ntargets = 0; /* XXX */ 690 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF); 691 /* disable SCSI and DMA interrupts */ 692 sc->sc_sien = 0; 693 sc->sc_dien = 0; 694 rp->siop_sien = sc->sc_sien; 695 rp->siop_dien = sc->sc_dien; 696 697 return; 698 } 699 700 /* 701 * Check if upper half of SCSI bus is unterminated, and disallow 702 * disconnections if it appears to be unterminated. 703 */ 704 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 705 printf(" NO WIDE TERM"); 706 /* XXX need to restrict maximum target ID as well? */ 707 sc->sc_channel.chan_ntargets = 8; 708 for (i = 0; i < 16; ++i) { 709 siopng_allow_disc[i] = 0; 710 siopng_inhibit_wide[i] |= 0x80; 711 } 712 } 713 714 printf("siopng type %s id %d reset V%d\n", 715 siopng_chips[rp->siop_macntl>>4], 716 sc->sc_channel.chan_ntargets, 717 rp->siop_ctest3 >> 4); 718 719 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 720 TAILQ_INIT(&sc->ready_list); 721 TAILQ_INIT(&sc->nexus_list); 722 TAILQ_INIT(&sc->free_list); 723 sc->sc_nexus = NULL; 724 acb = sc->sc_acb; 725 memset(acb, 0, sizeof(struct siop_acb) * SIOP_NACB); 726 for (i = 0; i < SIOP_NACB; i++) { 727 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 728 acb++; 729 } 730 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 731 } else { 732 if (sc->sc_nexus != NULL) { 733 sc->sc_nexus->xs->error = XS_RESET; 734 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 735 } 736 while ((acb = sc->nexus_list.tqh_first) > 0) { 737 acb->xs->error = XS_RESET; 738 siopng_scsidone(acb, acb->stat[0]); 739 } 740 } 741 742 sc->sc_flags |= SIOP_ALIVE; 743 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 744 /* enable SCSI and DMA interrupts */ 745 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 746 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 747 SIOP_SIEN_RST | SIOP_SIEN_PAR; 748 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 749 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 750 rp->siop_sien = sc->sc_sien; 751 rp->siop_dien = sc->sc_dien; 752 /*siopng_dump_registers(sc);*/ 753 } 754 755 /* 756 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 757 */ 758 759 void 760 siopng_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, 761 int clen, u_char *buf, int len) 762 { 763 siop_regmap_p rp = sc->sc_siopp; 764 int nchain; 765 int count, tcount; 766 char *addr, *dmaend; 767 struct siop_acb *acb = sc->sc_nexus; 768 #ifdef DEBUG 769 int i; 770 #endif 771 772 #ifdef DEBUG 773 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 774 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 775 rp, &siopng_scripts, &acb->ds, sc->sc_active); 776 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 777 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 778 rp->siop_sien, rp->siop_dien); 779 #ifdef DDB 780 /*Debugger();*/ 781 #endif 782 } 783 #endif 784 acb->msgout[0] = MSG_IDENTIFY | lun; 785 if (siopng_allow_disc[target] & 2 || 786 (siopng_allow_disc[target] && len == 0)) 787 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 788 acb->status = 0; 789 acb->stat[0] = -1; 790 acb->msg[0] = -1; 791 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 792 (sc->sc_sync[target].scntl3 << 24); 793 acb->ds.idlen = 1; 794 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 795 acb->ds.cmdlen = clen; 796 acb->ds.cmdbuf = (char *) kvtop(cbuf); 797 acb->ds.stslen = 1; 798 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 799 acb->ds.msglen = 1; 800 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 801 acb->msg[1] = -1; 802 acb->ds.msginlen = 1; 803 acb->ds.extmsglen = 1; 804 acb->ds.synmsglen = 3; 805 acb->ds.msginbuf = acb->ds.msgbuf + 1; 806 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 807 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 808 memset(&acb->ds.chain, 0, sizeof (acb->ds.chain)); 809 810 if (sc->sc_sync[target].state == NEG_WIDE) { 811 if (siopng_inhibit_wide[target]) { 812 sc->sc_sync[target].state = NEG_SYNC; 813 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 814 #ifdef DEBUG 815 if (siopngsync_debug) 816 printf ("Forcing target %d narrow\n", target); 817 #endif 818 } 819 else { 820 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 821 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 822 acb->msg[2] = -1; 823 acb->msgout[1] = MSG_EXT_MESSAGE; 824 acb->msgout[2] = 2; 825 acb->msgout[3] = MSG_WIDE_REQ; 826 acb->msgout[4] = 1; 827 acb->ds.idlen = 5; 828 acb->ds.synmsglen = 2; 829 sc->sc_sync[target].state = NEG_WAITW; 830 #ifdef DEBUG 831 if (siopngsync_debug) 832 printf("Sending wide request to target %d\n", target); 833 #endif 834 } 835 } 836 if (sc->sc_sync[target].state == NEG_SYNC) { 837 if (siopng_inhibit_sync[target]) { 838 sc->sc_sync[target].state = NEG_DONE; 839 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 840 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 841 sc->sc_sync[target].sxfer = 0; 842 #ifdef DEBUG 843 if (siopngsync_debug) 844 printf ("Forcing target %d asynchronous\n", target); 845 #endif 846 } 847 else { 848 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 849 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 850 acb->msg[2] = -1; 851 acb->msgout[1] = MSG_EXT_MESSAGE; 852 acb->msgout[2] = 3; 853 acb->msgout[3] = MSG_SYNC_REQ; 854 #ifdef MAXTOR_SYNC_KLUDGE 855 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 856 #else 857 acb->msgout[4] = sc->sc_minsync; 858 #endif 859 acb->msgout[5] = SIOP_MAX_OFFSET; 860 acb->ds.idlen = 6; 861 sc->sc_sync[target].state = NEG_WAITS; 862 #ifdef DEBUG 863 if (siopngsync_debug) 864 printf ("Sending sync request to target %d\n", target); 865 #endif 866 } 867 } 868 869 /* 870 * Build physical DMA addresses for scatter/gather I/O 871 */ 872 acb->iob_buf = buf; 873 acb->iob_len = len; 874 acb->iob_curbuf = acb->iob_curlen = 0; 875 nchain = 0; 876 count = len; 877 addr = buf; 878 dmaend = NULL; 879 while (count > 0) { 880 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 881 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET))) 882 tcount = count; 883 884 #if DEBUG_ONLY_IF_DESPERATE 885 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 886 nchain, count, tcount, addr, 887 acb->ds.chain[nchain].databuf); 888 #endif 889 acb->ds.chain[nchain].datalen = tcount; 890 addr += tcount; 891 count -= tcount; 892 if (acb->ds.chain[nchain].databuf == dmaend) { 893 dmaend += acb->ds.chain[nchain].datalen; 894 acb->ds.chain[nchain].datalen = 0; 895 acb->ds.chain[--nchain].datalen += tcount; 896 #ifdef DEBUG 897 ++siopngdma_hits; 898 #endif 899 } 900 else { 901 dmaend = acb->ds.chain[nchain].databuf + 902 acb->ds.chain[nchain].datalen; 903 acb->ds.chain[nchain].datalen = tcount; 904 #ifdef DEBUG 905 if (nchain) /* Don't count miss on first one */ 906 ++siopngdma_misses; 907 #endif 908 } 909 ++nchain; 910 } 911 #ifdef DEBUG 912 if (nchain != 1 && len != 0 && siopng_debug & 3) { 913 printf ("DMA chaining set: %d\n", nchain); 914 for (i = 0; i < nchain; ++i) { 915 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 916 acb->ds.chain[i].datalen); 917 } 918 } 919 #endif 920 921 /* push data cache for all data the 53c720/770 needs to access */ 922 dma_cachectl ((void *)acb, sizeof (struct siop_acb)); 923 dma_cachectl (cbuf, clen); 924 if (buf != NULL && len != 0) 925 dma_cachectl (buf, len); 926 #ifdef DEBUG 927 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 928 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 929 rp, &siopng_scripts, &acb->ds, sc->sc_active); 930 #ifdef DDB 931 /*Debugger();*/ 932 #endif 933 } 934 #endif 935 if (sc->nexus_list.tqh_first == NULL) { 936 callout_reset(&acb->xs->xs_callout, 937 mstohz(acb->xs->timeout) + 1, siopng_timeout, acb); 938 if (rp->siop_istat & SIOP_ISTAT_CON) 939 printf("%s: siopng_select while connected?\n", 940 device_xname(sc->sc_dev)); 941 rp->siop_temp = 0; 942 #ifndef FIXME 943 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 944 #endif 945 amiga_membarrier(); 946 rp->siop_dsa = kvtop((void *)&acb->ds); 947 amiga_membarrier(); 948 rp->siop_dsp = sc->sc_scriptspa; 949 amiga_membarrier(); 950 SIOP_TRACE('s',1,0,0) 951 } else { 952 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 953 rp->siop_istat = SIOP_ISTAT_SIGP; 954 SIOP_TRACE('s',2,0,0); 955 } 956 else { 957 SIOP_TRACE('s',3,rp->siop_istat,0); 958 } 959 } 960 #ifdef DEBUG 961 ++siopngstarts; 962 #endif 963 } 964 965 /* 966 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 967 */ 968 969 int 970 siopng_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 971 u_short sist, int *status) 972 { 973 siop_regmap_p rp = sc->sc_siopp; 974 struct siop_acb *acb = sc->sc_nexus; 975 int target = 0; 976 int dfifo, dbc, sstat0, sstat1, sstat2; 977 978 dfifo = rp->siop_dfifo; 979 dbc = rp->siop_dbc0; 980 sstat0 = rp->siop_sstat0; 981 sstat1 = rp->siop_sstat1; 982 __USE(sstat1); 983 sstat2 = rp->siop_sstat2; 984 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 985 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 986 ; 987 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 988 #ifdef DEBUG 989 ++siopngints; 990 #if 0 991 if (siopng_debug & 0x100) { 992 DCIAS(&acb->stat[0]); /* XXX */ 993 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 994 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 995 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 996 acb->msg[0], acb->msg[1], acb->msg[2], 997 acb->msg[3], acb->msg[4], acb->msg[5]); 998 } 999 #endif 1000 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 1001 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 1002 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 1003 device_xname(sc->sc_dev), rp->siop_dsp, sc->sc_scriptspa, 1004 sc->sc_scriptspa + sizeof(siopng_scripts)); 1005 printf(" istat %x dstat %x sist %x\n", 1006 istat, dstat, sist); 1007 #ifdef DDB 1008 Debugger(); 1009 #endif 1010 } 1011 #endif 1012 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 1013 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 1014 /* Normal completion status, or check condition */ 1015 #ifdef DEBUG 1016 if (rp->siop_dsa != kvtop((void *)&acb->ds)) { 1017 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 1018 (unsigned)kvtop((void *)&acb->ds)); 1019 panic("*** siopng DSA invalid ***"); 1020 } 1021 #endif 1022 target = acb->xs->xs_periph->periph_target; 1023 if (sc->sc_sync[target].state == NEG_WAITW) { 1024 if (acb->msg[1] == 0xff) 1025 printf ("%s: target %d ignored wide request\n", 1026 device_xname(sc->sc_dev), target); 1027 else if (acb->msg[1] == MSG_REJECT) 1028 printf ("%s: target %d rejected wide request\n", 1029 device_xname(sc->sc_dev), target); 1030 else { 1031 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 1032 device_xname(sc->sc_dev), target, acb->msg[1], 1033 acb->msg[2], acb->msg[3], acb->msg[4]); 1034 if (acb->msg[1] == MSG_EXT_MESSAGE && 1035 acb->msg[2] == 2 && 1036 acb->msg[3] == MSG_WIDE_REQ) 1037 sc->sc_sync[target].scntl3 = acb->msg[4] ? 1038 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 1039 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 1040 } 1041 sc->sc_sync[target].state = NEG_SYNC; 1042 } 1043 if (sc->sc_sync[target].state == NEG_WAITS) { 1044 if (acb->msg[1] == 0xff) 1045 printf ("%s: target %d ignored sync request\n", 1046 device_xname(sc->sc_dev), target); 1047 else if (acb->msg[1] == MSG_REJECT) 1048 printf ("%s: target %d rejected sync request\n", 1049 device_xname(sc->sc_dev), target); 1050 else 1051 /* XXX - need to set sync transfer parameters */ 1052 printf("%s: target %d (sync) %02x %02x %02x\n", 1053 device_xname(sc->sc_dev), target, acb->msg[1], 1054 acb->msg[2], acb->msg[3]); 1055 sc->sc_sync[target].state = NEG_DONE; 1056 } 1057 dma_cachectl(&acb->stat[0], 1); 1058 *status = acb->stat[0]; 1059 #ifdef DEBUG 1060 if (rp->siop_sbcl & SIOP_BSY) { 1061 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1062 rp, &siopng_scripts, &acb->ds);*/ 1063 #ifdef DDB 1064 /*Debugger();*/ 1065 #endif 1066 } 1067 if (acb->msg[0] != 0x00) 1068 printf("%s: message was not COMMAND COMPLETE: %x\n", 1069 device_xname(sc->sc_dev), acb->msg[0]); 1070 #endif 1071 if (sc->nexus_list.tqh_first) 1072 rp->siop_dcntl |= SIOP_DCNTL_STD; 1073 return 1; 1074 } 1075 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1076 target = acb->xs->xs_periph->periph_target; 1077 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1078 acb->msg[3] == MSG_WIDE_REQ) { 1079 #ifdef DEBUG 1080 if (siopngsync_debug) 1081 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1082 acb->msg[0], acb->msg[1], acb->msg[2], 1083 acb->msg[3], acb->msg[4], acb->msg[5]); 1084 #endif 1085 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1086 if (acb->msg[2] == 2 && 1087 acb->msg[3] == MSG_WIDE_REQ && 1088 acb->msg[4] != 0) { 1089 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1090 printf ("%s: target %d now wide %d\n", 1091 device_xname(sc->sc_dev), target, 1092 acb->msg[4]); 1093 } 1094 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1095 amiga_membarrier(); 1096 if (sc->sc_sync[target].state == NEG_WAITW) { 1097 sc->sc_sync[target].state = NEG_SYNC; 1098 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1099 amiga_membarrier(); 1100 return(0); 1101 } 1102 rp->siop_dcntl |= SIOP_DCNTL_STD; 1103 amiga_membarrier(); 1104 sc->sc_sync[target].state = NEG_SYNC; 1105 return (0); 1106 } 1107 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1108 acb->msg[3] == MSG_SYNC_REQ) { 1109 #ifdef DEBUG 1110 if (siopngsync_debug) 1111 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1112 acb->msg[0], acb->msg[1], acb->msg[2], 1113 acb->msg[3], acb->msg[4], acb->msg[5]); 1114 #endif 1115 sc->sc_sync[target].sxfer = 0; 1116 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1117 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1118 if (acb->msg[2] == 3 && 1119 acb->msg[3] == MSG_SYNC_REQ && 1120 acb->msg[5] != 0) { 1121 #ifdef MAXTOR_KLUDGE 1122 /* 1123 * Kludge for my Maxtor XT8580S 1124 * It accepts whatever we request, even 1125 * though it won't work. So we ask for 1126 * a short period than we can handle. If 1127 * the device says it can do it, use 208ns. 1128 * If the device says it can do less than 1129 * 100ns, then we limit it to 100ns. 1130 */ 1131 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1132 #ifdef DEBUG 1133 printf ("%d: target %d wanted %dns period\n", 1134 device_xname(sc->sc_dev), target, 1135 acb->msg[4] * 4); 1136 #endif 1137 if (acb->msg[4] == 50 / 4) 1138 acb->msg[4] = 208 / 4; 1139 else 1140 acb->msg[4] = 100 / 4; 1141 } 1142 #endif /* MAXTOR_KLUDGE */ 1143 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1144 device_xname(sc->sc_dev), target, 1145 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4, 1146 acb->msg[5]); 1147 scsi_period_to_siopng (sc, target); 1148 } 1149 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1150 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1151 amiga_membarrier(); 1152 if (sc->sc_sync[target].state == NEG_WAITS) { 1153 sc->sc_sync[target].state = NEG_DONE; 1154 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1155 amiga_membarrier(); 1156 return(0); 1157 } 1158 rp->siop_dcntl |= SIOP_DCNTL_STD; 1159 amiga_membarrier(); 1160 sc->sc_sync[target].state = NEG_DONE; 1161 return (0); 1162 } 1163 /* XXX - not SDTR message */ 1164 } 1165 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1166 #ifdef DEBUG 1167 ++siopngphmm; 1168 if (acb == NULL) 1169 printf("%s: Phase mismatch with no active command?\n", 1170 device_xname(sc->sc_dev)); 1171 #endif 1172 if (acb->iob_len) { 1173 int adjust; 1174 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1175 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1176 ++adjust; 1177 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1178 ++adjust; 1179 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1180 ++adjust; 1181 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1182 ++adjust; 1183 acb->iob_curlen = 1184 *((long *)__UNVOLATILE(&rp->siop_dcmd)) & 0xffffff; 1185 acb->iob_curlen += adjust; 1186 acb->iob_curbuf = 1187 *((long *)__UNVOLATILE(&rp->siop_dnad)) - adjust; 1188 #ifdef DEBUG 1189 if (siopng_debug & 0x100) { 1190 int i; 1191 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1192 acb->iob_curbuf, acb->iob_curlen, dfifo, 1193 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1194 if (acb->ds.chain[1].datalen) { 1195 for (i = 0; acb->ds.chain[i].datalen; ++i) 1196 printf("chain[%d] addr %p len %lx\n", 1197 i, acb->ds.chain[i].databuf, 1198 acb->ds.chain[i].datalen); 1199 } 1200 } 1201 #endif 1202 dma_cachectl ((void *)acb, sizeof(*acb)); 1203 } 1204 #ifdef DEBUG 1205 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1206 if (siopng_debug & 9) 1207 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1208 rp->siop_sbcl, 1209 rp->siop_dsp - sc->sc_scriptspa, 1210 *((volatile long *)&rp->siop_dcmd)); 1211 #endif 1212 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1213 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1214 rp->siop_sbcl, rp->siop_dsp); 1215 #if defined(DEBUG) && defined(DDB) 1216 Debugger(); 1217 #endif 1218 } 1219 switch (rp->siop_sbcl & 7) { 1220 case 0: /* data out */ 1221 case 1: /* data in */ 1222 case 2: /* status */ 1223 case 3: /* command */ 1224 case 6: /* message in */ 1225 case 7: /* message out */ 1226 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1227 amiga_membarrier(); 1228 break; 1229 default: 1230 goto bad_phase; 1231 } 1232 return 0; 1233 } 1234 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1235 #ifdef DEBUG 1236 if (acb == NULL) 1237 printf("%s: Select timeout with no active command?\n", 1238 device_xname(sc->sc_dev)); 1239 if (rp->siop_sbcl & SIOP_BSY) { 1240 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1241 rp, &siopng_scripts, &acb->ds); 1242 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1243 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1244 if (!(rp->siop_sbcl & SIOP_BSY)) { 1245 printf ("Yikes, it's not busy now!\n"); 1246 #if 0 1247 *status = -1; 1248 if (sc->nexus_list.tqh_first) { 1249 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1250 amiga_membarrier(); 1251 } 1252 return 1; 1253 #endif 1254 } 1255 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1256 return (0); 1257 } 1258 #endif 1259 *status = -1; 1260 acb->xs->error = XS_SELTIMEOUT; 1261 if (sc->nexus_list.tqh_first) { 1262 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1263 amiga_membarrier(); 1264 } 1265 return 1; 1266 } 1267 if (acb) 1268 target = acb->xs->xs_periph->periph_target; 1269 else 1270 target = 7; 1271 if (sist & SIOP_SIST_UDC) { 1272 #ifdef DEBUG 1273 if (acb == NULL) 1274 printf("%s: Unexpected disconnect with no active command?\n", 1275 device_xname(sc->sc_dev)); 1276 printf ("%s: target %d disconnected unexpectedly\n", 1277 device_xname(sc->sc_dev), target); 1278 siopng_dump_registers(sc); 1279 siopng_dump(sc); 1280 #endif 1281 #if 0 1282 siopngabort (sc, rp, "siopngchkintr"); 1283 #endif 1284 *status = STS_BUSY; 1285 if (sc->nexus_list.tqh_first) { 1286 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1287 amiga_membarrier(); 1288 } 1289 return (acb != NULL); 1290 } 1291 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1292 rp->siop_dsps == 0xff02)) { 1293 #ifdef DEBUG 1294 if (siopng_debug & 0x100) 1295 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", 1296 device_xname(sc->sc_dev), 1 << target, rp->siop_temp, 1297 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1298 acb->iob_curbuf, acb->iob_curlen, 1299 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1300 #endif 1301 if (acb == NULL) { 1302 printf("%s: Disconnect with no active command?\n", 1303 device_xname(sc->sc_dev)); 1304 return (0); 1305 } 1306 /* 1307 * XXXX need to update iob_curbuf/iob_curlen to reflect 1308 * current data transferred. If device disconnected in 1309 * the middle of a DMA block, they should already be set 1310 * by the phase change interrupt. If the disconnect 1311 * occurs on a DMA block boundary, we have to figure out 1312 * which DMA block it was. 1313 */ 1314 if (acb->iob_len && rp->siop_temp) { 1315 int n = rp->siop_temp - sc->sc_scriptspa; 1316 1317 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1318 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1319 device_xname(sc->sc_dev), n, acb->iob_curbuf, acb->iob_curlen, 1320 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1321 if (n < Ent_datain) 1322 n = (n - Ent_dataout) / 16; 1323 else 1324 n = (n - Ent_datain) / 16; 1325 if (n <= 0 && n > DMAMAXIO) 1326 printf("TEMP invalid %d\n", n); 1327 else { 1328 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1329 acb->iob_curlen = acb->ds.chain[n].datalen; 1330 } 1331 #ifdef DEBUG 1332 if (siopng_debug & 0x100) { 1333 printf("%s: TEMP offset %d", device_xname(sc->sc_dev), n); 1334 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1335 acb->iob_curlen); 1336 } 1337 #endif 1338 } 1339 /* 1340 * If data transfer was interrupted by disconnect, iob_curbuf 1341 * and iob_curlen should reflect the point of interruption. 1342 * Adjust the DMA chain so that the data transfer begins 1343 * at the appropriate place upon reselection. 1344 * XXX This should only be done on save data pointer message? 1345 */ 1346 if (acb->iob_curlen) { 1347 int i, j; 1348 1349 #ifdef DEBUG 1350 if (siopng_debug & 0x100) 1351 printf ("%s: adjusting DMA chain\n", 1352 device_xname(sc->sc_dev)); 1353 if (rp->siop_dsps == 0xff02) 1354 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1355 device_xname(sc->sc_dev), 1 << target); 1356 #endif 1357 for (i = 0; i < DMAMAXIO; ++i) { 1358 if (acb->ds.chain[i].datalen == 0) 1359 break; 1360 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1361 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1362 acb->ds.chain[i].datalen)) 1363 break; 1364 } 1365 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1366 printf("couldn't find saved data pointer: "); 1367 printf("curbuf %lx curlen %lx i %d\n", 1368 acb->iob_curbuf, acb->iob_curlen, i); 1369 #ifdef DDB 1370 Debugger(); 1371 #endif 1372 } 1373 #ifdef DEBUG 1374 if (siopng_debug & 0x100) 1375 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1376 acb->ds.chain[0].databuf, 1377 acb->ds.chain[0].datalen, 1378 acb->iob_curbuf, 1379 acb->iob_curlen); 1380 #endif 1381 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1382 acb->ds.chain[0].datalen = acb->iob_curlen; 1383 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1384 #ifdef DEBUG 1385 if (siopng_debug & 0x100) 1386 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1387 acb->ds.chain[j].databuf, 1388 acb->ds.chain[j].datalen, 1389 acb->ds.chain[i].databuf, 1390 acb->ds.chain[i].datalen); 1391 #endif 1392 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1393 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1394 } 1395 if (j < DMAMAXIO) 1396 acb->ds.chain[j].datalen = 0; 1397 DCIAS(kvtop((void *)&acb->ds.chain)); 1398 } 1399 ++sc->sc_tinfo[target].dconns; 1400 /* 1401 * add nexus to waiting list 1402 * clear nexus 1403 * try to start another command for another target/lun 1404 */ 1405 acb->status = sc->sc_flags & SIOP_INTSOFF; 1406 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1407 sc->sc_nexus = NULL; /* no current device */ 1408 /* start script to wait for reselect */ 1409 if (sc->sc_nexus == NULL) { 1410 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1411 amiga_membarrier(); 1412 } 1413 /* XXXX start another command ? */ 1414 if (sc->ready_list.tqh_first) 1415 siopng_sched(sc); 1416 #if 0 1417 else 1418 rp->siop_dcntl |= SIOP_DCNTL_STD; 1419 #endif 1420 return (0); 1421 } 1422 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1423 int reselid = rp->siop_scratcha & 0x7f; 1424 int reselun = rp->siop_sfbr & 0x07; 1425 1426 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1427 #ifdef DEBUG 1428 if (siopng_debug & 0x100) 1429 printf ("%s: target ID %02x reselected dsps %lx\n", 1430 device_xname(sc->sc_dev), reselid, 1431 rp->siop_dsps); 1432 if ((rp->siop_sfbr & 0x80) == 0) 1433 printf("%s: Reselect message in was not identify: %x\n", 1434 device_xname(sc->sc_dev), rp->siop_sfbr); 1435 #endif 1436 if (sc->sc_nexus) { 1437 #ifdef DEBUG 1438 if (siopng_debug & 0x100) 1439 printf ("%s: reselect ID %02x w/active\n", 1440 device_xname(sc->sc_dev), reselid); 1441 #endif 1442 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1443 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1444 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1445 --sc->sc_active; 1446 } 1447 /* 1448 * locate acb of reselecting device 1449 * set sc->sc_nexus to acb 1450 */ 1451 for (acb = sc->nexus_list.tqh_first; acb; 1452 acb = acb->chain.tqe_next) { 1453 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1454 reselun != (acb->msgout[0] & 0x07)) 1455 continue; 1456 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1457 sc->sc_nexus = acb; 1458 sc->sc_flags |= acb->status; 1459 acb->status = 0; 1460 DCIAS(kvtop(&acb->stat[0])); 1461 rp->siop_dsa = kvtop((void *)&acb->ds); 1462 amiga_membarrier(); 1463 rp->siop_sxfer = 1464 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1465 #ifndef FIXME 1466 rp->siop_scntl3 = 1467 sc->sc_sync[acb->xs->xs_periph->periph_target].scntl3; 1468 amiga_membarrier(); 1469 #endif 1470 break; 1471 } 1472 if (acb == NULL) { 1473 printf("%s: target ID %02x reselect nexus_list %p\n", 1474 device_xname(sc->sc_dev), reselid, 1475 sc->nexus_list.tqh_first); 1476 panic("unable to find reselecting device"); 1477 } 1478 dma_cachectl ((void *)acb, sizeof(*acb)); 1479 rp->siop_temp = 0; 1480 rp->siop_dcntl |= SIOP_DCNTL_STD; 1481 amiga_membarrier(); 1482 return (0); 1483 } 1484 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1485 #ifdef DEBUG 1486 u_short ctest2 = rp->siop_ctest2; 1487 1488 /* reselect was interrupted (by Sig_P or select) */ 1489 if (siopng_debug & 0x100 || 1490 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1491 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1492 device_xname(sc->sc_dev), rp->siop_scntl1, 1493 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1494 #endif 1495 /* XXX assumes it was not select */ 1496 if (sc->sc_nexus == NULL) { 1497 #ifdef DEBUG 1498 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1499 device_xname(sc->sc_dev)); 1500 #if 0 1501 siopng_dump(sc); 1502 #ifdef DDB 1503 Debugger(); 1504 #endif 1505 #endif 1506 #endif 1507 rp->siop_dcntl |= SIOP_DCNTL_STD; 1508 return(0); 1509 } 1510 target = sc->sc_nexus->xs->xs_periph->periph_target; 1511 rp->siop_temp = 0; 1512 rp->siop_dsa = kvtop((void *)&sc->sc_nexus->ds); 1513 amiga_membarrier(); 1514 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1515 #ifndef FIXME 1516 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1517 amiga_membarrier(); 1518 #endif 1519 rp->siop_dsp = sc->sc_scriptspa; 1520 amiga_membarrier(); 1521 return (0); 1522 } 1523 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1524 if (acb == NULL) 1525 printf("%s: Bad message-in with no active command?\n", 1526 device_xname(sc->sc_dev)); 1527 /* Unrecognized message in byte */ 1528 dma_cachectl (&acb->msg[1],1); 1529 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1530 device_xname(sc->sc_dev), rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1531 /* what should be done here? */ 1532 DCIAS(kvtop(&acb->msg[1])); 1533 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1534 amiga_membarrier(); 1535 return (0); 1536 } 1537 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1538 /* Status phase wasn't followed by message in phase? */ 1539 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1540 device_xname(sc->sc_dev), rp->siop_sbcl, rp->siop_sbdl); 1541 if (rp->siop_sbcl == 0xa7) { 1542 /* It is now, just continue the script? */ 1543 rp->siop_dcntl |= SIOP_DCNTL_STD; 1544 return (0); 1545 } 1546 } 1547 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1548 dma_cachectl (&acb->stat[0], 1); 1549 dma_cachectl (&acb->msg[0], 1); 1550 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1551 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1552 rp->siop_sbcl); 1553 siopngreset (sc); 1554 *status = -1; 1555 return 0; /* siopngreset has cleaned up */ 1556 } 1557 if (sist & SIOP_SIST_SGE) 1558 printf ("SIOP: SCSI Gross Error\n"); 1559 if (sist & SIOP_SIST_PAR) 1560 printf ("SIOP: Parity Error\n"); 1561 if (dstat & SIOP_DSTAT_IID) 1562 printf ("SIOP: Invalid instruction detected\n"); 1563 bad_phase: 1564 /* 1565 * temporary panic for unhandled conditions 1566 * displays various things about the 53C720/770 status and registers 1567 * then panics. 1568 * XXXX need to clean this up to print out the info, reset, and continue 1569 */ 1570 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1571 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", 1572 sc->sc_scriptspa, (unsigned)kvtop((void *)&acb->ds), 1573 (unsigned)kvtop((void *)__UNVOLATILE(rp)), rp->siop_dsp, 1574 *((long *)__UNVOLATILE(&rp->siop_dcmd))); 1575 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1576 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1577 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1578 #ifdef DEBUG 1579 if (siopng_debug & 0x20) 1580 panic("siopngchkintr: **** temp ****"); 1581 #endif 1582 #ifdef DDB 1583 Debugger (); 1584 #endif 1585 siopngreset (sc); /* hard reset */ 1586 *status = -1; 1587 return 0; /* siopngreset cleaned up */ 1588 } 1589 1590 void 1591 siopng_select(struct siop_softc *sc) 1592 { 1593 siop_regmap_p rp; 1594 struct siop_acb *acb = sc->sc_nexus; 1595 1596 #ifdef DEBUG 1597 if (siopng_debug & 1) 1598 printf ("%s: select ", device_xname(sc->sc_dev)); 1599 #endif 1600 1601 rp = sc->sc_siopp; 1602 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) { 1603 sc->sc_flags |= SIOP_INTSOFF; 1604 sc->sc_flags &= ~SIOP_INTDEFER; 1605 if ((rp->siop_istat & 0x08) == 0) { 1606 rp->siop_sien = 0; 1607 rp->siop_dien = 0; 1608 } 1609 #if 0 1610 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1611 sc->sc_flags &= ~SIOP_INTSOFF; 1612 if ((rp->siop_istat & 0x08) == 0) { 1613 rp->siop_sien = sc->sc_sien; 1614 rp->siop_dien = sc->sc_dien; 1615 } 1616 #endif 1617 } 1618 #ifdef DEBUG 1619 if (siopng_debug & 1) 1620 printf ("siopng_select: target %x cmd %02x ds %p\n", 1621 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1622 &sc->sc_nexus->ds); 1623 #endif 1624 1625 siopng_start(sc, acb->xs->xs_periph->periph_target, 1626 acb->xs->xs_periph->periph_lun, 1627 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1628 1629 return; 1630 } 1631 1632 /* 1633 * 53C720/770 interrupt handler 1634 */ 1635 1636 void 1637 siopngintr(register struct siop_softc *sc) 1638 { 1639 siop_regmap_p rp; 1640 u_char istat, dstat; 1641 u_short sist; 1642 int status; 1643 int s = splbio(); 1644 1645 istat = sc->sc_istat; 1646 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1647 splx(s); 1648 return; 1649 } 1650 1651 /* Got a valid interrupt on this device */ 1652 rp = sc->sc_siopp; 1653 dstat = sc->sc_dstat; 1654 sist = sc->sc_sist; 1655 if (dstat & SIOP_DSTAT_SIR) 1656 sc->sc_intcode = rp->siop_dsps; 1657 sc->sc_istat = 0; 1658 #ifdef DEBUG 1659 if (siopng_debug & 1) 1660 printf ("%s: intr istat %x dstat %x sist %x\n", 1661 device_xname(sc->sc_dev), istat, dstat, sist); 1662 if (!sc->sc_active) { 1663 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1664 device_xname(sc->sc_dev), istat, dstat, sist, 1665 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1666 } 1667 #endif 1668 1669 #ifdef DEBUG 1670 if (siopng_debug & 5) { 1671 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1672 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1673 device_xname(sc->sc_dev), istat, dstat, sist, 1674 rp->siop_dsps, rp->siop_sbcl, 1675 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1676 } 1677 #endif 1678 if (sc->sc_flags & SIOP_INTDEFER) { 1679 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1680 rp->siop_sien = sc->sc_sien; 1681 rp->siop_dien = sc->sc_dien; 1682 } 1683 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1684 #if 1 1685 if (status == 0xff) 1686 printf ("siopngintr: status == 0xff\n"); 1687 #endif 1688 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1689 #if 0 1690 if (rp->siop_sbcl & SIOP_BSY) { 1691 printf ("%s: SCSI bus busy at completion", 1692 device_xname(sc->sc_dev)); 1693 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1694 sc->sc_nexus->xs->xs_periph->periph_target, 1695 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1696 rp->siop_dsp - sc->sc_scriptspa); 1697 } 1698 #endif 1699 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1700 sc->sc_nexus->stat[0] : -1); 1701 } 1702 } 1703 splx(s); 1704 } 1705 1706 /* 1707 * This is based on the Progressive Peripherals 33 MHz Zeus driver and will 1708 * not be correct for other 53c710 boards. 1709 * 1710 */ 1711 void 1712 scsi_period_to_siopng(struct siop_softc *sc, int target) 1713 { 1714 int period, offset, sxfer, scntl3 = 0; 1715 1716 period = sc->sc_nexus->msg[4]; 1717 offset = sc->sc_nexus->msg[5]; 1718 #ifdef FIXME 1719 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1720 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1721 if (sxfer >= 0 && sxfer <= 7) 1722 break; 1723 } 1724 if (scntl3 > 3) { 1725 printf("siopng sync: unable to compute sync params for period %dns\n", 1726 period * 4); 1727 /* 1728 * XXX need to pick a value we can do and renegotiate 1729 */ 1730 sxfer = scntl3 = 0; 1731 } else { 1732 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1733 offset : SIOP_MAX_OFFSET); 1734 #ifdef DEBUG_SYNC 1735 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1736 period * 4, sxfer, scntl3); 1737 printf(" actual period %dns\n", 1738 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1739 #endif /* DEBUG_SYNC */ 1740 } 1741 #else /* FIXME */ 1742 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1743 sxfer |= 0x20; /* XXX XFERP: 5 */ 1744 #ifndef FIXME 1745 if (period <= (50 / 4)) /* XXX */ 1746 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1747 else if (period <= (100 / 4)) 1748 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1749 else if (period <= (200 / 4)) 1750 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1751 else 1752 scntl3 = 0xff; /* XXX ??? */ 1753 #else 1754 scntl3 = 5; 1755 #endif 1756 #endif 1757 sc->sc_sync[target].sxfer = sxfer; 1758 sc->sc_sync[target].scntl3 = scntl3 | 1759 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1760 #ifdef DEBUG_SYNC 1761 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1762 #endif 1763 } 1764 1765 void 1766 siopng_dump_registers(struct siop_softc *sc) 1767 { 1768 siop_regmap_p rp = sc->sc_siopp; 1769 1770 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1771 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1772 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1773 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1774 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1775 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1776 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1777 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1778 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1779 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1780 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1781 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1782 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1783 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1784 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1785 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1786 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1787 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1788 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1789 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1790 printf(" sidl %04x sodl %04x sbdl %04x\n", 1791 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1792 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1793 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1794 rp->siop_dsp - sc->sc_scriptspa : 0); 1795 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1796 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1797 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1798 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1799 } 1800 1801 #ifdef DEBUG 1802 1803 #if SIOP_TRACE_SIZE 1804 void 1805 siopng_dump_trace(void) 1806 { 1807 int i; 1808 1809 printf("siopng trace: next index %d\n", siopng_trix); 1810 i = siopng_trix; 1811 do { 1812 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1813 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1814 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1815 } while (i != siopng_trix); 1816 } 1817 #endif 1818 1819 void 1820 siopng_dump_acb(struct siop_acb *acb) 1821 { 1822 u_char *b = (u_char *) &acb->cmd; 1823 int i; 1824 1825 printf("acb@%p ", acb); 1826 if (acb->xs == NULL) { 1827 printf("<unused>\n"); 1828 return; 1829 } 1830 printf("(%d:%d) flags %2x clen %2d cmd ", 1831 acb->xs->xs_periph->periph_target, 1832 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1833 for (i = acb->clen; i; --i) 1834 printf(" %02x", *b++); 1835 printf("\n"); 1836 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1837 acb->xs->datalen); 1838 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1839 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1840 } 1841 1842 void 1843 siopng_dump(struct siop_softc *sc) 1844 { 1845 struct siop_acb *acb; 1846 siop_regmap_p rp = sc->sc_siopp; 1847 int s; 1848 int i; 1849 1850 s = splbio(); 1851 #if SIOP_TRACE_SIZE 1852 siopng_dump_trace(); 1853 #endif 1854 printf("%s@%p regs %p istat %x\n", 1855 device_xname(sc->sc_dev), sc, rp, rp->siop_istat); 1856 if ((acb = sc->free_list.tqh_first) > 0) { 1857 printf("Free list:\n"); 1858 while (acb) { 1859 siopng_dump_acb(acb); 1860 acb = acb->chain.tqe_next; 1861 } 1862 } 1863 if ((acb = sc->ready_list.tqh_first) > 0) { 1864 printf("Ready list:\n"); 1865 while (acb) { 1866 siopng_dump_acb(acb); 1867 acb = acb->chain.tqe_next; 1868 } 1869 } 1870 if ((acb = sc->nexus_list.tqh_first) > 0) { 1871 printf("Nexus list:\n"); 1872 while (acb) { 1873 siopng_dump_acb(acb); 1874 acb = acb->chain.tqe_next; 1875 } 1876 } 1877 if (sc->sc_nexus) { 1878 printf("Nexus:\n"); 1879 siopng_dump_acb(sc->sc_nexus); 1880 } 1881 for (i = 0; i < 8; ++i) { 1882 if (sc->sc_tinfo[i].cmds > 2) { 1883 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1884 i, sc->sc_tinfo[i].cmds, 1885 sc->sc_tinfo[i].dconns, 1886 sc->sc_tinfo[i].lubusy); 1887 } 1888 } 1889 splx(s); 1890 } 1891 #endif 1892
Indexes created Tue Sep 23 14:10:03 GMT 2025