siop2.c revision 1.40.8.2
1 /* $NetBSD: siop2.c,v 1.40.8.2 2014/05/22 11:39:29 yamt 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 1.40.8.2 2014/05/22 11:39:29 yamt 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_NOWAIT); 558 if (sc->sc_acb == NULL) 559 panic("siopnginitialize: ACB malloc failed!"); 560 561 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 562 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 563 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 564 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 565 if (sc->sc_minsync < 25) 566 sc->sc_minsync = 25; 567 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */ 568 if (sc->sc_clock_freq <= 25) { 569 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 570 sc->sc_tcp[0] = sc->sc_tcp[1]; 571 } else if (sc->sc_clock_freq <= 37) { 572 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 573 sc->sc_tcp[0] = sc->sc_tcp[2]; 574 } else if (sc->sc_clock_freq <= 50) { 575 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 576 sc->sc_tcp[0] = sc->sc_tcp[3]; 577 } else { 578 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 579 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 580 } 581 582 if (scsi_nosync) { 583 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff; 584 shift_nosync += 16; /* XXX maxtarget */ 585 #ifdef DEBUG 586 if (inhibit_sync) 587 printf("%s: Inhibiting synchronous transfer %02x\n", 588 device_xname(sc->sc_dev), inhibit_sync); 589 #endif 590 for (i = 0; i < 16; ++i) /* XXX maxtarget */ 591 if (inhibit_sync & (1 << i)) 592 siopng_inhibit_sync[i] = 1; 593 } 594 595 siopngreset (sc); 596 } 597 598 void 599 siopng_timeout(void *arg) 600 { 601 struct siop_acb *acb; 602 struct scsipi_periph *periph; 603 struct siop_softc *sc; 604 int s; 605 606 acb = arg; 607 periph = acb->xs->xs_periph; 608 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); 609 scsipi_printaddr(periph); 610 printf("timed out\n"); 611 612 s = splbio(); 613 614 acb->xs->error = XS_TIMEOUT; 615 siopngreset(sc); 616 617 splx(s); 618 } 619 620 void 621 siopngreset(struct siop_softc *sc) 622 { 623 siop_regmap_p rp; 624 u_int i, s; 625 u_short dummy; 626 struct siop_acb *acb; 627 628 rp = sc->sc_siopp; 629 630 if (sc->sc_flags & SIOP_ALIVE) 631 siopngabort(sc, rp, "reset"); 632 633 printf("%s: ", device_xname(sc->sc_dev)); /* XXXX */ 634 635 s = splbio(); 636 637 /* 638 * Reset the chip 639 * XXX - is this really needed? 640 */ 641 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 642 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 643 rp->siop_istat &= ~SIOP_ISTAT_RST; 644 /* 645 * Reset SCSI bus (do we really want this?) 646 */ 647 rp->siop_sien = 0; 648 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 649 delay(1); 650 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 651 652 /* 653 * Set up various chip parameters 654 */ 655 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */ 656 delay(20); 657 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */ 658 rp->siop_scntl3 = 0x15; /* SCF/CCF*/ 659 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */ 660 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */ 661 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG; 662 rp->siop_dcntl = sc->sc_dcntl; 663 rp->siop_dmode = 0xc0; /* XXX burst length */ 664 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 665 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 666 rp->siop_scid = sc->sc_channel.chan_id | 667 SIOP_SCID_RRE | SIOP_SCID_SRE; 668 rp->siop_respid = 1 << sc->sc_channel.chan_id; 669 rp->siop_dwt = 0x00; 670 rp->siop_stime0 = 0x0c; /* XXXXX check */ 671 672 /* will need to re-negotiate sync xfers */ 673 memset(&sc->sc_sync, 0, sizeof (sc->sc_sync)); 674 675 i = rp->siop_istat; 676 if (i & SIOP_ISTAT_SIP) 677 dummy = rp->siop_sist; 678 if (i & SIOP_ISTAT_DIP) 679 dummy = rp->siop_dstat; 680 681 __USE(dummy); 682 splx (s); 683 684 delay (siopng_reset_delay * 1000); 685 686 /* 687 * is lower half unterminated? 688 */ 689 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) { 690 printf(" no SCSI termination, host adapter deactivated.\n"); 691 sc->sc_channel.chan_ntargets = 0; /* XXX */ 692 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF); 693 /* disable SCSI and DMA interrupts */ 694 sc->sc_sien = 0; 695 sc->sc_dien = 0; 696 rp->siop_sien = sc->sc_sien; 697 rp->siop_dien = sc->sc_dien; 698 699 return; 700 } 701 702 /* 703 * Check if upper half of SCSI bus is unterminated, and disallow 704 * disconnections if it appears to be unterminated. 705 */ 706 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 707 printf(" NO WIDE TERM"); 708 /* XXX need to restrict maximum target ID as well? */ 709 sc->sc_channel.chan_ntargets = 8; 710 for (i = 0; i < 16; ++i) { 711 siopng_allow_disc[i] = 0; 712 siopng_inhibit_wide[i] |= 0x80; 713 } 714 } 715 716 printf("siopng type %s id %d reset V%d\n", 717 siopng_chips[rp->siop_macntl>>4], 718 sc->sc_channel.chan_ntargets, 719 rp->siop_ctest3 >> 4); 720 721 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 722 TAILQ_INIT(&sc->ready_list); 723 TAILQ_INIT(&sc->nexus_list); 724 TAILQ_INIT(&sc->free_list); 725 sc->sc_nexus = NULL; 726 acb = sc->sc_acb; 727 memset(acb, 0, sizeof(struct siop_acb) * SIOP_NACB); 728 for (i = 0; i < SIOP_NACB; i++) { 729 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 730 acb++; 731 } 732 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 733 } else { 734 if (sc->sc_nexus != NULL) { 735 sc->sc_nexus->xs->error = XS_RESET; 736 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 737 } 738 while ((acb = sc->nexus_list.tqh_first) > 0) { 739 acb->xs->error = XS_RESET; 740 siopng_scsidone(acb, acb->stat[0]); 741 } 742 } 743 744 sc->sc_flags |= SIOP_ALIVE; 745 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 746 /* enable SCSI and DMA interrupts */ 747 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 748 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 749 SIOP_SIEN_RST | SIOP_SIEN_PAR; 750 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 751 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 752 rp->siop_sien = sc->sc_sien; 753 rp->siop_dien = sc->sc_dien; 754 /*siopng_dump_registers(sc);*/ 755 } 756 757 /* 758 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 759 */ 760 761 void 762 siopng_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, 763 int clen, u_char *buf, int len) 764 { 765 siop_regmap_p rp = sc->sc_siopp; 766 int nchain; 767 int count, tcount; 768 char *addr, *dmaend; 769 struct siop_acb *acb = sc->sc_nexus; 770 #ifdef DEBUG 771 int i; 772 #endif 773 774 #ifdef DEBUG 775 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 776 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 777 rp, &siopng_scripts, &acb->ds, sc->sc_active); 778 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 779 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 780 rp->siop_sien, rp->siop_dien); 781 #ifdef DDB 782 /*Debugger();*/ 783 #endif 784 } 785 #endif 786 acb->msgout[0] = MSG_IDENTIFY | lun; 787 if (siopng_allow_disc[target] & 2 || 788 (siopng_allow_disc[target] && len == 0)) 789 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 790 acb->status = 0; 791 acb->stat[0] = -1; 792 acb->msg[0] = -1; 793 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 794 (sc->sc_sync[target].scntl3 << 24); 795 acb->ds.idlen = 1; 796 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 797 acb->ds.cmdlen = clen; 798 acb->ds.cmdbuf = (char *) kvtop(cbuf); 799 acb->ds.stslen = 1; 800 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 801 acb->ds.msglen = 1; 802 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 803 acb->msg[1] = -1; 804 acb->ds.msginlen = 1; 805 acb->ds.extmsglen = 1; 806 acb->ds.synmsglen = 3; 807 acb->ds.msginbuf = acb->ds.msgbuf + 1; 808 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 809 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 810 memset(&acb->ds.chain, 0, sizeof (acb->ds.chain)); 811 812 if (sc->sc_sync[target].state == NEG_WIDE) { 813 if (siopng_inhibit_wide[target]) { 814 sc->sc_sync[target].state = NEG_SYNC; 815 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 816 #ifdef DEBUG 817 if (siopngsync_debug) 818 printf ("Forcing target %d narrow\n", target); 819 #endif 820 } 821 else { 822 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 823 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 824 acb->msg[2] = -1; 825 acb->msgout[1] = MSG_EXT_MESSAGE; 826 acb->msgout[2] = 2; 827 acb->msgout[3] = MSG_WIDE_REQ; 828 acb->msgout[4] = 1; 829 acb->ds.idlen = 5; 830 acb->ds.synmsglen = 2; 831 sc->sc_sync[target].state = NEG_WAITW; 832 #ifdef DEBUG 833 if (siopngsync_debug) 834 printf("Sending wide request to target %d\n", target); 835 #endif 836 } 837 } 838 if (sc->sc_sync[target].state == NEG_SYNC) { 839 if (siopng_inhibit_sync[target]) { 840 sc->sc_sync[target].state = NEG_DONE; 841 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 842 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 843 sc->sc_sync[target].sxfer = 0; 844 #ifdef DEBUG 845 if (siopngsync_debug) 846 printf ("Forcing target %d asynchronous\n", target); 847 #endif 848 } 849 else { 850 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 851 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 852 acb->msg[2] = -1; 853 acb->msgout[1] = MSG_EXT_MESSAGE; 854 acb->msgout[2] = 3; 855 acb->msgout[3] = MSG_SYNC_REQ; 856 #ifdef MAXTOR_SYNC_KLUDGE 857 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 858 #else 859 acb->msgout[4] = sc->sc_minsync; 860 #endif 861 acb->msgout[5] = SIOP_MAX_OFFSET; 862 acb->ds.idlen = 6; 863 sc->sc_sync[target].state = NEG_WAITS; 864 #ifdef DEBUG 865 if (siopngsync_debug) 866 printf ("Sending sync request to target %d\n", target); 867 #endif 868 } 869 } 870 871 /* 872 * Build physical DMA addresses for scatter/gather I/O 873 */ 874 acb->iob_buf = buf; 875 acb->iob_len = len; 876 acb->iob_curbuf = acb->iob_curlen = 0; 877 nchain = 0; 878 count = len; 879 addr = buf; 880 dmaend = NULL; 881 while (count > 0) { 882 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 883 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET))) 884 tcount = count; 885 886 #if DEBUG_ONLY_IF_DESPERATE 887 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 888 nchain, count, tcount, addr, 889 acb->ds.chain[nchain].databuf); 890 #endif 891 acb->ds.chain[nchain].datalen = tcount; 892 addr += tcount; 893 count -= tcount; 894 if (acb->ds.chain[nchain].databuf == dmaend) { 895 dmaend += acb->ds.chain[nchain].datalen; 896 acb->ds.chain[nchain].datalen = 0; 897 acb->ds.chain[--nchain].datalen += tcount; 898 #ifdef DEBUG 899 ++siopngdma_hits; 900 #endif 901 } 902 else { 903 dmaend = acb->ds.chain[nchain].databuf + 904 acb->ds.chain[nchain].datalen; 905 acb->ds.chain[nchain].datalen = tcount; 906 #ifdef DEBUG 907 if (nchain) /* Don't count miss on first one */ 908 ++siopngdma_misses; 909 #endif 910 } 911 ++nchain; 912 } 913 #ifdef DEBUG 914 if (nchain != 1 && len != 0 && siopng_debug & 3) { 915 printf ("DMA chaining set: %d\n", nchain); 916 for (i = 0; i < nchain; ++i) { 917 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 918 acb->ds.chain[i].datalen); 919 } 920 } 921 #endif 922 923 /* push data cache for all data the 53c720/770 needs to access */ 924 dma_cachectl ((void *)acb, sizeof (struct siop_acb)); 925 dma_cachectl (cbuf, clen); 926 if (buf != NULL && len != 0) 927 dma_cachectl (buf, len); 928 #ifdef DEBUG 929 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 930 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 931 rp, &siopng_scripts, &acb->ds, sc->sc_active); 932 #ifdef DDB 933 /*Debugger();*/ 934 #endif 935 } 936 #endif 937 if (sc->nexus_list.tqh_first == NULL) { 938 callout_reset(&acb->xs->xs_callout, 939 mstohz(acb->xs->timeout) + 1, siopng_timeout, acb); 940 if (rp->siop_istat & SIOP_ISTAT_CON) 941 printf("%s: siopng_select while connected?\n", 942 device_xname(sc->sc_dev)); 943 rp->siop_temp = 0; 944 #ifndef FIXME 945 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 946 #endif 947 amiga_membarrier(); 948 rp->siop_dsa = kvtop((void *)&acb->ds); 949 amiga_membarrier(); 950 rp->siop_dsp = sc->sc_scriptspa; 951 amiga_membarrier(); 952 SIOP_TRACE('s',1,0,0) 953 } else { 954 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 955 rp->siop_istat = SIOP_ISTAT_SIGP; 956 SIOP_TRACE('s',2,0,0); 957 } 958 else { 959 SIOP_TRACE('s',3,rp->siop_istat,0); 960 } 961 } 962 #ifdef DEBUG 963 ++siopngstarts; 964 #endif 965 } 966 967 /* 968 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 969 */ 970 971 int 972 siopng_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 973 u_short sist, int *status) 974 { 975 siop_regmap_p rp = sc->sc_siopp; 976 struct siop_acb *acb = sc->sc_nexus; 977 int target = 0; 978 int dfifo, dbc, sstat0, sstat1, sstat2; 979 980 dfifo = rp->siop_dfifo; 981 dbc = rp->siop_dbc0; 982 sstat0 = rp->siop_sstat0; 983 sstat1 = rp->siop_sstat1; 984 __USE(sstat1); 985 sstat2 = rp->siop_sstat2; 986 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 987 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 988 ; 989 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 990 #ifdef DEBUG 991 ++siopngints; 992 #if 0 993 if (siopng_debug & 0x100) { 994 DCIAS(&acb->stat[0]); /* XXX */ 995 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 996 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 997 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 998 acb->msg[0], acb->msg[1], acb->msg[2], 999 acb->msg[3], acb->msg[4], acb->msg[5]); 1000 } 1001 #endif 1002 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 1003 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 1004 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 1005 device_xname(sc->sc_dev), rp->siop_dsp, sc->sc_scriptspa, 1006 sc->sc_scriptspa + sizeof(siopng_scripts)); 1007 printf(" istat %x dstat %x sist %x\n", 1008 istat, dstat, sist); 1009 #ifdef DDB 1010 Debugger(); 1011 #endif 1012 } 1013 #endif 1014 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 1015 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 1016 /* Normal completion status, or check condition */ 1017 #ifdef DEBUG 1018 if (rp->siop_dsa != kvtop((void *)&acb->ds)) { 1019 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 1020 (unsigned)kvtop((void *)&acb->ds)); 1021 panic("*** siopng DSA invalid ***"); 1022 } 1023 #endif 1024 target = acb->xs->xs_periph->periph_target; 1025 if (sc->sc_sync[target].state == NEG_WAITW) { 1026 if (acb->msg[1] == 0xff) 1027 printf ("%s: target %d ignored wide request\n", 1028 device_xname(sc->sc_dev), target); 1029 else if (acb->msg[1] == MSG_REJECT) 1030 printf ("%s: target %d rejected wide request\n", 1031 device_xname(sc->sc_dev), target); 1032 else { 1033 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 1034 device_xname(sc->sc_dev), target, acb->msg[1], 1035 acb->msg[2], acb->msg[3], acb->msg[4]); 1036 if (acb->msg[1] == MSG_EXT_MESSAGE && 1037 acb->msg[2] == 2 && 1038 acb->msg[3] == MSG_WIDE_REQ) 1039 sc->sc_sync[target].scntl3 = acb->msg[4] ? 1040 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 1041 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 1042 } 1043 sc->sc_sync[target].state = NEG_SYNC; 1044 } 1045 if (sc->sc_sync[target].state == NEG_WAITS) { 1046 if (acb->msg[1] == 0xff) 1047 printf ("%s: target %d ignored sync request\n", 1048 device_xname(sc->sc_dev), target); 1049 else if (acb->msg[1] == MSG_REJECT) 1050 printf ("%s: target %d rejected sync request\n", 1051 device_xname(sc->sc_dev), target); 1052 else 1053 /* XXX - need to set sync transfer parameters */ 1054 printf("%s: target %d (sync) %02x %02x %02x\n", 1055 device_xname(sc->sc_dev), target, acb->msg[1], 1056 acb->msg[2], acb->msg[3]); 1057 sc->sc_sync[target].state = NEG_DONE; 1058 } 1059 dma_cachectl(&acb->stat[0], 1); 1060 *status = acb->stat[0]; 1061 #ifdef DEBUG 1062 if (rp->siop_sbcl & SIOP_BSY) { 1063 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1064 rp, &siopng_scripts, &acb->ds);*/ 1065 #ifdef DDB 1066 /*Debugger();*/ 1067 #endif 1068 } 1069 if (acb->msg[0] != 0x00) 1070 printf("%s: message was not COMMAND COMPLETE: %x\n", 1071 device_xname(sc->sc_dev), acb->msg[0]); 1072 #endif 1073 if (sc->nexus_list.tqh_first) 1074 rp->siop_dcntl |= SIOP_DCNTL_STD; 1075 return 1; 1076 } 1077 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1078 target = acb->xs->xs_periph->periph_target; 1079 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1080 acb->msg[3] == MSG_WIDE_REQ) { 1081 #ifdef DEBUG 1082 if (siopngsync_debug) 1083 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1084 acb->msg[0], acb->msg[1], acb->msg[2], 1085 acb->msg[3], acb->msg[4], acb->msg[5]); 1086 #endif 1087 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1088 if (acb->msg[2] == 2 && 1089 acb->msg[3] == MSG_WIDE_REQ && 1090 acb->msg[4] != 0) { 1091 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1092 printf ("%s: target %d now wide %d\n", 1093 device_xname(sc->sc_dev), target, 1094 acb->msg[4]); 1095 } 1096 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1097 amiga_membarrier(); 1098 if (sc->sc_sync[target].state == NEG_WAITW) { 1099 sc->sc_sync[target].state = NEG_SYNC; 1100 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1101 amiga_membarrier(); 1102 return(0); 1103 } 1104 rp->siop_dcntl |= SIOP_DCNTL_STD; 1105 amiga_membarrier(); 1106 sc->sc_sync[target].state = NEG_SYNC; 1107 return (0); 1108 } 1109 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1110 acb->msg[3] == MSG_SYNC_REQ) { 1111 #ifdef DEBUG 1112 if (siopngsync_debug) 1113 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1114 acb->msg[0], acb->msg[1], acb->msg[2], 1115 acb->msg[3], acb->msg[4], acb->msg[5]); 1116 #endif 1117 sc->sc_sync[target].sxfer = 0; 1118 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1119 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1120 if (acb->msg[2] == 3 && 1121 acb->msg[3] == MSG_SYNC_REQ && 1122 acb->msg[5] != 0) { 1123 #ifdef MAXTOR_KLUDGE 1124 /* 1125 * Kludge for my Maxtor XT8580S 1126 * It accepts whatever we request, even 1127 * though it won't work. So we ask for 1128 * a short period than we can handle. If 1129 * the device says it can do it, use 208ns. 1130 * If the device says it can do less than 1131 * 100ns, then we limit it to 100ns. 1132 */ 1133 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1134 #ifdef DEBUG 1135 printf ("%d: target %d wanted %dns period\n", 1136 device_xname(sc->sc_dev), target, 1137 acb->msg[4] * 4); 1138 #endif 1139 if (acb->msg[4] == 50 / 4) 1140 acb->msg[4] = 208 / 4; 1141 else 1142 acb->msg[4] = 100 / 4; 1143 } 1144 #endif /* MAXTOR_KLUDGE */ 1145 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1146 device_xname(sc->sc_dev), target, 1147 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4, 1148 acb->msg[5]); 1149 scsi_period_to_siopng (sc, target); 1150 } 1151 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1152 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1153 amiga_membarrier(); 1154 if (sc->sc_sync[target].state == NEG_WAITS) { 1155 sc->sc_sync[target].state = NEG_DONE; 1156 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1157 amiga_membarrier(); 1158 return(0); 1159 } 1160 rp->siop_dcntl |= SIOP_DCNTL_STD; 1161 amiga_membarrier(); 1162 sc->sc_sync[target].state = NEG_DONE; 1163 return (0); 1164 } 1165 /* XXX - not SDTR message */ 1166 } 1167 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1168 #ifdef DEBUG 1169 ++siopngphmm; 1170 if (acb == NULL) 1171 printf("%s: Phase mismatch with no active command?\n", 1172 device_xname(sc->sc_dev)); 1173 #endif 1174 if (acb->iob_len) { 1175 int adjust; 1176 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1177 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1178 ++adjust; 1179 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1180 ++adjust; 1181 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1182 ++adjust; 1183 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1184 ++adjust; 1185 acb->iob_curlen = 1186 *((long *)__UNVOLATILE(&rp->siop_dcmd)) & 0xffffff; 1187 acb->iob_curlen += adjust; 1188 acb->iob_curbuf = 1189 *((long *)__UNVOLATILE(&rp->siop_dnad)) - adjust; 1190 #ifdef DEBUG 1191 if (siopng_debug & 0x100) { 1192 int i; 1193 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1194 acb->iob_curbuf, acb->iob_curlen, dfifo, 1195 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1196 if (acb->ds.chain[1].datalen) { 1197 for (i = 0; acb->ds.chain[i].datalen; ++i) 1198 printf("chain[%d] addr %p len %lx\n", 1199 i, acb->ds.chain[i].databuf, 1200 acb->ds.chain[i].datalen); 1201 } 1202 } 1203 #endif 1204 dma_cachectl ((void *)acb, sizeof(*acb)); 1205 } 1206 #ifdef DEBUG 1207 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1208 if (siopng_debug & 9) 1209 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1210 rp->siop_sbcl, 1211 rp->siop_dsp - sc->sc_scriptspa, 1212 *((volatile long *)&rp->siop_dcmd)); 1213 #endif 1214 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1215 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1216 rp->siop_sbcl, rp->siop_dsp); 1217 #if defined(DEBUG) && defined(DDB) 1218 Debugger(); 1219 #endif 1220 } 1221 switch (rp->siop_sbcl & 7) { 1222 case 0: /* data out */ 1223 case 1: /* data in */ 1224 case 2: /* status */ 1225 case 3: /* command */ 1226 case 6: /* message in */ 1227 case 7: /* message out */ 1228 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1229 amiga_membarrier(); 1230 break; 1231 default: 1232 goto bad_phase; 1233 } 1234 return 0; 1235 } 1236 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1237 #ifdef DEBUG 1238 if (acb == NULL) 1239 printf("%s: Select timeout with no active command?\n", 1240 device_xname(sc->sc_dev)); 1241 if (rp->siop_sbcl & SIOP_BSY) { 1242 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1243 rp, &siopng_scripts, &acb->ds); 1244 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1245 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1246 if (!(rp->siop_sbcl & SIOP_BSY)) { 1247 printf ("Yikes, it's not busy now!\n"); 1248 #if 0 1249 *status = -1; 1250 if (sc->nexus_list.tqh_first) { 1251 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1252 amiga_membarrier(); 1253 } 1254 return 1; 1255 #endif 1256 } 1257 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1258 return (0); 1259 #ifdef DDB 1260 Debugger(); 1261 #endif 1262 } 1263 #endif 1264 *status = -1; 1265 acb->xs->error = XS_SELTIMEOUT; 1266 if (sc->nexus_list.tqh_first) { 1267 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1268 amiga_membarrier(); 1269 } 1270 return 1; 1271 } 1272 if (acb) 1273 target = acb->xs->xs_periph->periph_target; 1274 else 1275 target = 7; 1276 if (sist & SIOP_SIST_UDC) { 1277 #ifdef DEBUG 1278 if (acb == NULL) 1279 printf("%s: Unexpected disconnect with no active command?\n", 1280 device_xname(sc->sc_dev)); 1281 printf ("%s: target %d disconnected unexpectedly\n", 1282 device_xname(sc->sc_dev), target); 1283 siopng_dump_registers(sc); 1284 siopng_dump(sc); 1285 #endif 1286 #if 0 1287 siopngabort (sc, rp, "siopngchkintr"); 1288 #endif 1289 *status = STS_BUSY; 1290 if (sc->nexus_list.tqh_first) { 1291 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1292 amiga_membarrier(); 1293 } 1294 return (acb != NULL); 1295 } 1296 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1297 rp->siop_dsps == 0xff02)) { 1298 #ifdef DEBUG 1299 if (siopng_debug & 0x100) 1300 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", 1301 device_xname(sc->sc_dev), 1 << target, rp->siop_temp, 1302 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1303 acb->iob_curbuf, acb->iob_curlen, 1304 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1305 #endif 1306 if (acb == NULL) { 1307 printf("%s: Disconnect with no active command?\n", 1308 device_xname(sc->sc_dev)); 1309 return (0); 1310 } 1311 /* 1312 * XXXX need to update iob_curbuf/iob_curlen to reflect 1313 * current data transferred. If device disconnected in 1314 * the middle of a DMA block, they should already be set 1315 * by the phase change interrupt. If the disconnect 1316 * occurs on a DMA block boundary, we have to figure out 1317 * which DMA block it was. 1318 */ 1319 if (acb->iob_len && rp->siop_temp) { 1320 int n = rp->siop_temp - sc->sc_scriptspa; 1321 1322 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1323 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1324 device_xname(sc->sc_dev), n, acb->iob_curbuf, acb->iob_curlen, 1325 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1326 if (n < Ent_datain) 1327 n = (n - Ent_dataout) / 16; 1328 else 1329 n = (n - Ent_datain) / 16; 1330 if (n <= 0 && n > DMAMAXIO) 1331 printf("TEMP invalid %d\n", n); 1332 else { 1333 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1334 acb->iob_curlen = acb->ds.chain[n].datalen; 1335 } 1336 #ifdef DEBUG 1337 if (siopng_debug & 0x100) { 1338 printf("%s: TEMP offset %d", device_xname(sc->sc_dev), n); 1339 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1340 acb->iob_curlen); 1341 } 1342 #endif 1343 } 1344 /* 1345 * If data transfer was interrupted by disconnect, iob_curbuf 1346 * and iob_curlen should reflect the point of interruption. 1347 * Adjust the DMA chain so that the data transfer begins 1348 * at the appropriate place upon reselection. 1349 * XXX This should only be done on save data pointer message? 1350 */ 1351 if (acb->iob_curlen) { 1352 int i, j; 1353 1354 #ifdef DEBUG 1355 if (siopng_debug & 0x100) 1356 printf ("%s: adjusting DMA chain\n", 1357 device_xname(sc->sc_dev)); 1358 if (rp->siop_dsps == 0xff02) 1359 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1360 device_xname(sc->sc_dev), 1 << target); 1361 #endif 1362 for (i = 0; i < DMAMAXIO; ++i) { 1363 if (acb->ds.chain[i].datalen == 0) 1364 break; 1365 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1366 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1367 acb->ds.chain[i].datalen)) 1368 break; 1369 } 1370 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1371 printf("couldn't find saved data pointer: "); 1372 printf("curbuf %lx curlen %lx i %d\n", 1373 acb->iob_curbuf, acb->iob_curlen, i); 1374 #ifdef DDB 1375 Debugger(); 1376 #endif 1377 } 1378 #ifdef DEBUG 1379 if (siopng_debug & 0x100) 1380 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1381 acb->ds.chain[0].databuf, 1382 acb->ds.chain[0].datalen, 1383 acb->iob_curbuf, 1384 acb->iob_curlen); 1385 #endif 1386 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1387 acb->ds.chain[0].datalen = acb->iob_curlen; 1388 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1389 #ifdef DEBUG 1390 if (siopng_debug & 0x100) 1391 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1392 acb->ds.chain[j].databuf, 1393 acb->ds.chain[j].datalen, 1394 acb->ds.chain[i].databuf, 1395 acb->ds.chain[i].datalen); 1396 #endif 1397 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1398 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1399 } 1400 if (j < DMAMAXIO) 1401 acb->ds.chain[j].datalen = 0; 1402 DCIAS(kvtop((void *)&acb->ds.chain)); 1403 } 1404 ++sc->sc_tinfo[target].dconns; 1405 /* 1406 * add nexus to waiting list 1407 * clear nexus 1408 * try to start another command for another target/lun 1409 */ 1410 acb->status = sc->sc_flags & SIOP_INTSOFF; 1411 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1412 sc->sc_nexus = NULL; /* no current device */ 1413 /* start script to wait for reselect */ 1414 if (sc->sc_nexus == NULL) { 1415 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1416 amiga_membarrier(); 1417 } 1418 /* XXXX start another command ? */ 1419 if (sc->ready_list.tqh_first) 1420 siopng_sched(sc); 1421 #if 0 1422 else 1423 rp->siop_dcntl |= SIOP_DCNTL_STD; 1424 #endif 1425 return (0); 1426 } 1427 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1428 int reselid = rp->siop_scratcha & 0x7f; 1429 int reselun = rp->siop_sfbr & 0x07; 1430 1431 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1432 #ifdef DEBUG 1433 if (siopng_debug & 0x100) 1434 printf ("%s: target ID %02x reselected dsps %lx\n", 1435 device_xname(sc->sc_dev), reselid, 1436 rp->siop_dsps); 1437 if ((rp->siop_sfbr & 0x80) == 0) 1438 printf("%s: Reselect message in was not identify: %x\n", 1439 device_xname(sc->sc_dev), rp->siop_sfbr); 1440 #endif 1441 if (sc->sc_nexus) { 1442 #ifdef DEBUG 1443 if (siopng_debug & 0x100) 1444 printf ("%s: reselect ID %02x w/active\n", 1445 device_xname(sc->sc_dev), reselid); 1446 #endif 1447 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1448 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1449 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1450 --sc->sc_active; 1451 } 1452 /* 1453 * locate acb of reselecting device 1454 * set sc->sc_nexus to acb 1455 */ 1456 for (acb = sc->nexus_list.tqh_first; acb; 1457 acb = acb->chain.tqe_next) { 1458 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1459 reselun != (acb->msgout[0] & 0x07)) 1460 continue; 1461 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1462 sc->sc_nexus = acb; 1463 sc->sc_flags |= acb->status; 1464 acb->status = 0; 1465 DCIAS(kvtop(&acb->stat[0])); 1466 rp->siop_dsa = kvtop((void *)&acb->ds); 1467 amiga_membarrier(); 1468 rp->siop_sxfer = 1469 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1470 #ifndef FIXME 1471 rp->siop_scntl3 = 1472 sc->sc_sync[acb->xs->xs_periph->periph_target].scntl3; 1473 amiga_membarrier(); 1474 #endif 1475 break; 1476 } 1477 if (acb == NULL) { 1478 printf("%s: target ID %02x reselect nexus_list %p\n", 1479 device_xname(sc->sc_dev), reselid, 1480 sc->nexus_list.tqh_first); 1481 panic("unable to find reselecting device"); 1482 } 1483 dma_cachectl ((void *)acb, sizeof(*acb)); 1484 rp->siop_temp = 0; 1485 rp->siop_dcntl |= SIOP_DCNTL_STD; 1486 amiga_membarrier(); 1487 return (0); 1488 } 1489 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1490 #ifdef DEBUG 1491 u_short ctest2 = rp->siop_ctest2; 1492 1493 /* reselect was interrupted (by Sig_P or select) */ 1494 if (siopng_debug & 0x100 || 1495 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1496 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1497 device_xname(sc->sc_dev), rp->siop_scntl1, 1498 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1499 #endif 1500 /* XXX assumes it was not select */ 1501 if (sc->sc_nexus == NULL) { 1502 #ifdef DEBUG 1503 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1504 device_xname(sc->sc_dev)); 1505 #if 0 1506 siopng_dump(sc); 1507 #ifdef DDB 1508 Debugger(); 1509 #endif 1510 #endif 1511 #endif 1512 rp->siop_dcntl |= SIOP_DCNTL_STD; 1513 return(0); 1514 } 1515 target = sc->sc_nexus->xs->xs_periph->periph_target; 1516 rp->siop_temp = 0; 1517 rp->siop_dsa = kvtop((void *)&sc->sc_nexus->ds); 1518 amiga_membarrier(); 1519 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1520 #ifndef FIXME 1521 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1522 amiga_membarrier(); 1523 #endif 1524 rp->siop_dsp = sc->sc_scriptspa; 1525 amiga_membarrier(); 1526 return (0); 1527 } 1528 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1529 if (acb == NULL) 1530 printf("%s: Bad message-in with no active command?\n", 1531 device_xname(sc->sc_dev)); 1532 /* Unrecognized message in byte */ 1533 dma_cachectl (&acb->msg[1],1); 1534 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1535 device_xname(sc->sc_dev), rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1536 /* what should be done here? */ 1537 DCIAS(kvtop(&acb->msg[1])); 1538 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1539 amiga_membarrier(); 1540 return (0); 1541 } 1542 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1543 /* Status phase wasn't followed by message in phase? */ 1544 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1545 device_xname(sc->sc_dev), rp->siop_sbcl, rp->siop_sbdl); 1546 if (rp->siop_sbcl == 0xa7) { 1547 /* It is now, just continue the script? */ 1548 rp->siop_dcntl |= SIOP_DCNTL_STD; 1549 return (0); 1550 } 1551 } 1552 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1553 dma_cachectl (&acb->stat[0], 1); 1554 dma_cachectl (&acb->msg[0], 1); 1555 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1556 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1557 rp->siop_sbcl); 1558 siopngreset (sc); 1559 *status = -1; 1560 return 0; /* siopngreset has cleaned up */ 1561 } 1562 if (sist & SIOP_SIST_SGE) 1563 printf ("SIOP: SCSI Gross Error\n"); 1564 if (sist & SIOP_SIST_PAR) 1565 printf ("SIOP: Parity Error\n"); 1566 if (dstat & SIOP_DSTAT_IID) 1567 printf ("SIOP: Invalid instruction detected\n"); 1568 bad_phase: 1569 /* 1570 * temporary panic for unhandled conditions 1571 * displays various things about the 53C720/770 status and registers 1572 * then panics. 1573 * XXXX need to clean this up to print out the info, reset, and continue 1574 */ 1575 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1576 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", 1577 sc->sc_scriptspa, (unsigned)kvtop((void *)&acb->ds), 1578 (unsigned)kvtop((void *)__UNVOLATILE(rp)), rp->siop_dsp, 1579 *((long *)__UNVOLATILE(&rp->siop_dcmd))); 1580 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1581 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1582 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1583 #ifdef DEBUG 1584 if (siopng_debug & 0x20) 1585 panic("siopngchkintr: **** temp ****"); 1586 #endif 1587 #ifdef DDB 1588 Debugger (); 1589 #endif 1590 siopngreset (sc); /* hard reset */ 1591 *status = -1; 1592 return 0; /* siopngreset cleaned up */ 1593 } 1594 1595 void 1596 siopng_select(struct siop_softc *sc) 1597 { 1598 siop_regmap_p rp; 1599 struct siop_acb *acb = sc->sc_nexus; 1600 1601 #ifdef DEBUG 1602 if (siopng_debug & 1) 1603 printf ("%s: select ", device_xname(sc->sc_dev)); 1604 #endif 1605 1606 rp = sc->sc_siopp; 1607 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) { 1608 sc->sc_flags |= SIOP_INTSOFF; 1609 sc->sc_flags &= ~SIOP_INTDEFER; 1610 if ((rp->siop_istat & 0x08) == 0) { 1611 rp->siop_sien = 0; 1612 rp->siop_dien = 0; 1613 } 1614 #if 0 1615 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1616 sc->sc_flags &= ~SIOP_INTSOFF; 1617 if ((rp->siop_istat & 0x08) == 0) { 1618 rp->siop_sien = sc->sc_sien; 1619 rp->siop_dien = sc->sc_dien; 1620 } 1621 #endif 1622 } 1623 #ifdef DEBUG 1624 if (siopng_debug & 1) 1625 printf ("siopng_select: target %x cmd %02x ds %p\n", 1626 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1627 &sc->sc_nexus->ds); 1628 #endif 1629 1630 siopng_start(sc, acb->xs->xs_periph->periph_target, 1631 acb->xs->xs_periph->periph_lun, 1632 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1633 1634 return; 1635 } 1636 1637 /* 1638 * 53C720/770 interrupt handler 1639 */ 1640 1641 void 1642 siopngintr(register struct siop_softc *sc) 1643 { 1644 siop_regmap_p rp; 1645 u_char istat, dstat; 1646 u_short sist; 1647 int status; 1648 int s = splbio(); 1649 1650 istat = sc->sc_istat; 1651 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1652 splx(s); 1653 return; 1654 } 1655 1656 /* Got a valid interrupt on this device */ 1657 rp = sc->sc_siopp; 1658 dstat = sc->sc_dstat; 1659 sist = sc->sc_sist; 1660 if (dstat & SIOP_DSTAT_SIR) 1661 sc->sc_intcode = rp->siop_dsps; 1662 sc->sc_istat = 0; 1663 #ifdef DEBUG 1664 if (siopng_debug & 1) 1665 printf ("%s: intr istat %x dstat %x sist %x\n", 1666 device_xname(sc->sc_dev), istat, dstat, sist); 1667 if (!sc->sc_active) { 1668 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1669 device_xname(sc->sc_dev), istat, dstat, sist, 1670 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1671 } 1672 #endif 1673 1674 #ifdef DEBUG 1675 if (siopng_debug & 5) { 1676 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1677 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1678 device_xname(sc->sc_dev), istat, dstat, sist, 1679 rp->siop_dsps, rp->siop_sbcl, 1680 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1681 } 1682 #endif 1683 if (sc->sc_flags & SIOP_INTDEFER) { 1684 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1685 rp->siop_sien = sc->sc_sien; 1686 rp->siop_dien = sc->sc_dien; 1687 } 1688 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1689 #if 1 1690 if (status == 0xff) 1691 printf ("siopngintr: status == 0xff\n"); 1692 #endif 1693 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1694 #if 0 1695 if (rp->siop_sbcl & SIOP_BSY) { 1696 printf ("%s: SCSI bus busy at completion", 1697 device_xname(sc->sc_dev)); 1698 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1699 sc->sc_nexus->xs->xs_periph->periph_target, 1700 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1701 rp->siop_dsp - sc->sc_scriptspa); 1702 } 1703 #endif 1704 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1705 sc->sc_nexus->stat[0] : -1); 1706 } 1707 } 1708 splx(s); 1709 } 1710 1711 /* 1712 * This is based on the Progressive Peripherals 33 MHz Zeus driver and will 1713 * not be correct for other 53c710 boards. 1714 * 1715 */ 1716 void 1717 scsi_period_to_siopng(struct siop_softc *sc, int target) 1718 { 1719 int period, offset, sxfer, scntl3 = 0; 1720 1721 period = sc->sc_nexus->msg[4]; 1722 offset = sc->sc_nexus->msg[5]; 1723 #ifdef FIXME 1724 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1725 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1726 if (sxfer >= 0 && sxfer <= 7) 1727 break; 1728 } 1729 if (scntl3 > 3) { 1730 printf("siopng sync: unable to compute sync params for period %dns\n", 1731 period * 4); 1732 /* 1733 * XXX need to pick a value we can do and renegotiate 1734 */ 1735 sxfer = scntl3 = 0; 1736 } else { 1737 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1738 offset : SIOP_MAX_OFFSET); 1739 #ifdef DEBUG_SYNC 1740 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1741 period * 4, sxfer, scntl3); 1742 printf(" actual period %dns\n", 1743 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1744 #endif /* DEBUG_SYNC */ 1745 } 1746 #else /* FIXME */ 1747 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1748 sxfer |= 0x20; /* XXX XFERP: 5 */ 1749 #ifndef FIXME 1750 if (period <= (50 / 4)) /* XXX */ 1751 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1752 else if (period <= (100 / 4)) 1753 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1754 else if (period <= (200 / 4)) 1755 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1756 else 1757 scntl3 = 0xff; /* XXX ??? */ 1758 #else 1759 scntl3 = 5; 1760 #endif 1761 #endif 1762 sc->sc_sync[target].sxfer = sxfer; 1763 sc->sc_sync[target].scntl3 = scntl3 | 1764 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1765 #ifdef DEBUG_SYNC 1766 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1767 #endif 1768 } 1769 1770 void 1771 siopng_dump_registers(struct siop_softc *sc) 1772 { 1773 siop_regmap_p rp = sc->sc_siopp; 1774 1775 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1776 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1777 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1778 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1779 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1780 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1781 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1782 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1783 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1784 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1785 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1786 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1787 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1788 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1789 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1790 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1791 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1792 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1793 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1794 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1795 printf(" sidl %04x sodl %04x sbdl %04x\n", 1796 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1797 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1798 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1799 rp->siop_dsp - sc->sc_scriptspa : 0); 1800 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1801 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1802 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1803 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1804 } 1805 1806 #ifdef DEBUG 1807 1808 #if SIOP_TRACE_SIZE 1809 void 1810 siopng_dump_trace(void) 1811 { 1812 int i; 1813 1814 printf("siopng trace: next index %d\n", siopng_trix); 1815 i = siopng_trix; 1816 do { 1817 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1818 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1819 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1820 } while (i != siopng_trix); 1821 } 1822 #endif 1823 1824 void 1825 siopng_dump_acb(struct siop_acb *acb) 1826 { 1827 u_char *b = (u_char *) &acb->cmd; 1828 int i; 1829 1830 printf("acb@%p ", acb); 1831 if (acb->xs == NULL) { 1832 printf("<unused>\n"); 1833 return; 1834 } 1835 printf("(%d:%d) flags %2x clen %2d cmd ", 1836 acb->xs->xs_periph->periph_target, 1837 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1838 for (i = acb->clen; i; --i) 1839 printf(" %02x", *b++); 1840 printf("\n"); 1841 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1842 acb->xs->datalen); 1843 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1844 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1845 } 1846 1847 void 1848 siopng_dump(struct siop_softc *sc) 1849 { 1850 struct siop_acb *acb; 1851 siop_regmap_p rp = sc->sc_siopp; 1852 int s; 1853 int i; 1854 1855 s = splbio(); 1856 #if SIOP_TRACE_SIZE 1857 siopng_dump_trace(); 1858 #endif 1859 printf("%s@%p regs %p istat %x\n", 1860 device_xname(sc->sc_dev), sc, rp, rp->siop_istat); 1861 if ((acb = sc->free_list.tqh_first) > 0) { 1862 printf("Free list:\n"); 1863 while (acb) { 1864 siopng_dump_acb(acb); 1865 acb = acb->chain.tqe_next; 1866 } 1867 } 1868 if ((acb = sc->ready_list.tqh_first) > 0) { 1869 printf("Ready list:\n"); 1870 while (acb) { 1871 siopng_dump_acb(acb); 1872 acb = acb->chain.tqe_next; 1873 } 1874 } 1875 if ((acb = sc->nexus_list.tqh_first) > 0) { 1876 printf("Nexus list:\n"); 1877 while (acb) { 1878 siopng_dump_acb(acb); 1879 acb = acb->chain.tqe_next; 1880 } 1881 } 1882 if (sc->sc_nexus) { 1883 printf("Nexus:\n"); 1884 siopng_dump_acb(sc->sc_nexus); 1885 } 1886 for (i = 0; i < 8; ++i) { 1887 if (sc->sc_tinfo[i].cmds > 2) { 1888 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1889 i, sc->sc_tinfo[i].cmds, 1890 sc->sc_tinfo[i].dconns, 1891 sc->sc_tinfo[i].lubusy); 1892 } 1893 } 1894 splx(s); 1895 } 1896 #endif 1897
Indexes created Thu Oct 02 14:10:14 GMT 2025