1 /* $NetBSD: siop.c,v 1.64 2009/10/26 19:16:54 cegger 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 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 53C710 scsi adaptor driver 68 */ 69 70 #include "opt_ddb.h" 71 72 #include <sys/cdefs.h> 73 __KERNEL_RCSID(0, "$NetBSD: siop.c,v 1.64 2009/10/26 19:16:54 cegger Exp $"); 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/callout.h> 78 #include <sys/kernel.h> 79 #include <sys/device.h> 80 #include <sys/disklabel.h> 81 #include <sys/buf.h> 82 #include <sys/malloc.h> 83 84 #include <uvm/uvm_extern.h> 85 86 #include <dev/scsipi/scsi_all.h> 87 #include <dev/scsipi/scsipi_all.h> 88 #include <dev/scsipi/scsiconf.h> 89 #include <machine/cpu.h> 90 #ifdef __m68k__ 91 #include <m68k/cacheops.h> 92 #endif 93 #include <amiga/amiga/custom.h> 94 #include <amiga/amiga/isr.h> 95 #include <amiga/dev/siopreg.h> 96 #include <amiga/dev/siopvar.h> 97 98 /* 99 * SCSI delays 100 * In u-seconds, primarily for state changes on the SPC. 101 */ 102 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 103 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 104 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 105 106 void siop_select(struct siop_softc *); 107 void siopabort(struct siop_softc *, siop_regmap_p, const char *); 108 void sioperror(struct siop_softc *, siop_regmap_p, u_char); 109 void siopstart(struct siop_softc *); 110 int siop_checkintr(struct siop_softc *, u_char, u_char, u_char, int *); 111 void siopreset(struct siop_softc *); 112 void siopsetdelay(int); 113 void siop_scsidone(struct siop_acb *, int); 114 void siop_timeout(void *); 115 void siop_sched(struct siop_softc *); 116 void siop_poll(struct siop_softc *, struct siop_acb *); 117 void siopintr(struct siop_softc *); 118 void scsi_period_to_siop(struct siop_softc *, int); 119 void siop_start(struct siop_softc *, int, int, u_char *, int, u_char *, int); 120 void siop_dump_acb(struct siop_acb *); 121 122 /* 53C710 script */ 123 const 124 #include <amiga/dev/siop_script.out> 125 126 /* default to not inhibit sync negotiation on any drive */ 127 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 128 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 129 int siop_no_dma = 0; 130 131 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 132 133 int siop_cmd_wait = SCSI_CMD_WAIT; 134 int siop_data_wait = SCSI_DATA_WAIT; 135 int siop_init_wait = SCSI_INIT_WAIT; 136 137 #ifdef DEBUG_SYNC 138 /* 139 * sync period transfer lookup - only valid for 66 MHz clock 140 */ 141 static struct { 142 unsigned char p; /* period from sync request message */ 143 unsigned char r; /* siop_period << 4 | sbcl */ 144 } sync_tab[] = { 145 { 60/4, 0<<4 | 1}, 146 { 76/4, 1<<4 | 1}, 147 { 92/4, 2<<4 | 1}, 148 { 92/4, 0<<4 | 2}, 149 {108/4, 3<<4 | 1}, 150 {116/4, 1<<4 | 2}, 151 {120/4, 4<<4 | 1}, 152 {120/4, 0<<4 | 3}, 153 {136/4, 5<<4 | 1}, 154 {140/4, 2<<4 | 2}, 155 {152/4, 6<<4 | 1}, 156 {152/4, 1<<4 | 3}, 157 {164/4, 3<<4 | 2}, 158 {168/4, 7<<4 | 1}, 159 {180/4, 2<<4 | 3}, 160 {184/4, 4<<4 | 2}, 161 {208/4, 5<<4 | 2}, 162 {212/4, 3<<4 | 3}, 163 {232/4, 6<<4 | 2}, 164 {240/4, 4<<4 | 3}, 165 {256/4, 7<<4 | 2}, 166 {272/4, 5<<4 | 3}, 167 {300/4, 6<<4 | 3}, 168 {332/4, 7<<4 | 3} 169 }; 170 #endif 171 172 #ifdef DEBUG 173 /* 174 * 0x01 - full debug 175 * 0x02 - DMA chaining 176 * 0x04 - siopintr 177 * 0x08 - phase mismatch 178 * 0x10 - <not used> 179 * 0x20 - panic on unhandled exceptions 180 * 0x100 - disconnect/reselect 181 */ 182 int siop_debug = 0; 183 int siopsync_debug = 0; 184 int siopdma_hits = 0; 185 int siopdma_misses = 0; 186 int siopchain_ints = 0; 187 int siopstarts = 0; 188 int siopints = 0; 189 int siopphmm = 0; 190 #define SIOP_TRACE_SIZE 128 191 #define SIOP_TRACE(a,b,c,d) \ 192 siop_trbuf[siop_trix] = (a); \ 193 siop_trbuf[siop_trix+1] = (b); \ 194 siop_trbuf[siop_trix+2] = (c); \ 195 siop_trbuf[siop_trix+3] = (d); \ 196 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 197 u_char siop_trbuf[SIOP_TRACE_SIZE]; 198 int siop_trix; 199 void siop_dump(struct siop_softc *); 200 void siop_dump_trace(void); 201 #else 202 #define SIOP_TRACE(a,b,c,d) 203 #endif 204 205 206 /* 207 * default minphys routine for siop based controllers 208 */ 209 void 210 siop_minphys(struct buf *bp) 211 { 212 213 /* 214 * No max transfer at this level. 215 */ 216 minphys(bp); 217 } 218 219 /* 220 * used by specific siop controller 221 * 222 */ 223 void 224 siop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 225 void *arg) 226 { 227 struct scsipi_xfer *xs; 228 struct scsipi_periph *periph; 229 struct siop_acb *acb; 230 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 231 int flags, s; 232 233 switch (req) { 234 case ADAPTER_REQ_RUN_XFER: 235 xs = arg; 236 periph = xs->xs_periph; 237 flags = xs->xs_control; 238 239 /* XXXX ?? */ 240 if (flags & XS_CTL_DATA_UIO) 241 panic("siop: scsi data uio requested"); 242 243 /* XXXX ?? */ 244 if (sc->sc_nexus && flags & XS_CTL_POLL) 245 /* panic("siop_scsicmd: busy");*/ 246 printf("siop_scsicmd: busy\n"); 247 248 s = splbio(); 249 acb = sc->free_list.tqh_first; 250 if (acb) { 251 TAILQ_REMOVE(&sc->free_list, acb, chain); 252 } 253 splx(s); 254 255 #ifdef DIAGNOSTIC 256 /* 257 * This should never happen as we track the resources 258 * in the mid-layer. 259 */ 260 if (acb == NULL) { 261 scsipi_printaddr(periph); 262 printf("unable to allocate acb\n"); 263 panic("siop_scsipi_request"); 264 } 265 #endif 266 267 acb->flags = ACB_ACTIVE; 268 acb->xs = xs; 269 memcpy(&acb->cmd, xs->cmd, xs->cmdlen); 270 acb->clen = xs->cmdlen; 271 acb->daddr = xs->data; 272 acb->dleft = xs->datalen; 273 274 s = splbio(); 275 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 276 277 if (sc->sc_nexus == NULL) 278 siop_sched(sc); 279 280 splx(s); 281 282 if (flags & XS_CTL_POLL || siop_no_dma) 283 siop_poll(sc, acb); 284 return; 285 286 case ADAPTER_REQ_GROW_RESOURCES: 287 return; 288 289 case ADAPTER_REQ_SET_XFER_MODE: 290 return; 291 } 292 } 293 294 void 295 siop_poll(struct siop_softc *sc, struct siop_acb *acb) 296 { 297 siop_regmap_p rp = sc->sc_siopp; 298 struct scsipi_xfer *xs = acb->xs; 299 int i; 300 int status; 301 u_char istat; 302 u_char dstat; 303 u_char sstat0; 304 int s; 305 int to; 306 307 s = splbio(); 308 to = xs->timeout / 1000; 309 if (sc->nexus_list.tqh_first) 310 printf("%s: siop_poll called with disconnected device\n", 311 sc->sc_dev.dv_xname); 312 for (;;) { 313 /* use cmd_wait values? */ 314 i = 50000; 315 /* XXX spl0(); */ 316 while (((istat = rp->siop_istat) & 317 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 318 if (--i <= 0) { 319 #ifdef DEBUG 320 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 321 xs->xs_periph->periph_target, acb->cmd.opcode, 322 rp->siop_sbcl, rp->siop_dsp, 323 rp->siop_dsp - sc->sc_scriptspa, 324 *((volatile long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 325 #endif 326 i = 50000; 327 --to; 328 if (to <= 0) { 329 siopreset(sc); 330 return; 331 } 332 } 333 delay(20); 334 } 335 sstat0 = rp->siop_sstat0; 336 dstat = rp->siop_dstat; 337 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 338 if (acb != sc->sc_nexus) 339 printf("%s: siop_poll disconnected device completed\n", 340 sc->sc_dev.dv_xname); 341 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 342 sc->sc_flags &= ~SIOP_INTSOFF; 343 rp->siop_sien = sc->sc_sien; 344 rp->siop_dien = sc->sc_dien; 345 } 346 siop_scsidone(sc->sc_nexus, status); 347 } 348 349 if (xs->xs_status & XS_STS_DONE) 350 break; 351 } 352 splx(s); 353 } 354 355 /* 356 * start next command that's ready 357 */ 358 void 359 siop_sched(struct siop_softc *sc) 360 { 361 struct scsipi_periph *periph; 362 struct siop_acb *acb; 363 int i; 364 365 #ifdef DEBUG 366 if (sc->sc_nexus) { 367 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 368 sc->sc_dev.dv_xname, sc->sc_nexus, 369 sc->sc_nexus->xs->xs_periph->periph_target, 370 sc->ready_list.tqh_first, 371 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 372 return; 373 } 374 #endif 375 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 376 periph = acb->xs->xs_periph; 377 i = periph->periph_target; 378 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 379 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 380 381 TAILQ_REMOVE(&sc->ready_list, acb, chain); 382 sc->sc_nexus = acb; 383 periph = acb->xs->xs_periph; 384 ti = &sc->sc_tinfo[periph->periph_target]; 385 ti->lubusy |= (1 << periph->periph_lun); 386 break; 387 } 388 } 389 390 if (acb == NULL) { 391 #ifdef DEBUGXXX 392 printf("%s: siop_sched didn't find ready command\n", 393 sc->sc_dev.dv_xname); 394 #endif 395 return; 396 } 397 398 if (acb->xs->xs_control & XS_CTL_RESET) 399 siopreset(sc); 400 401 #if 0 402 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 403 #endif 404 ++sc->sc_active; 405 siop_select(sc); 406 } 407 408 void 409 siop_scsidone(struct siop_acb *acb, int stat) 410 { 411 struct scsipi_xfer *xs; 412 struct scsipi_periph *periph; 413 struct siop_softc *sc; 414 int dosched = 0; 415 416 if (acb == NULL || (xs = acb->xs) == NULL) { 417 #ifdef DIAGNOSTIC 418 printf("siop_scsidone: NULL acb or scsipi_xfer\n"); 419 #if defined(DEBUG) && defined(DDB) 420 Debugger(); 421 #endif 422 #endif 423 return; 424 } 425 426 callout_stop(&xs->xs_callout); 427 428 periph = xs->xs_periph; 429 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev; 430 431 xs->status = stat; 432 xs->resid = 0; /* XXXX */ 433 434 if (xs->error == XS_NOERROR) { 435 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 436 xs->error = XS_BUSY; 437 } 438 439 /* 440 * Remove the ACB from whatever queue it's on. We have to do a bit of 441 * a hack to figure out which queue it's on. Note that it is *not* 442 * necessary to cdr down the ready queue, but we must cdr down the 443 * nexus queue and see if it's there, so we can mark the unit as no 444 * longer busy. This code is sickening, but it works. 445 */ 446 if (acb == sc->sc_nexus) { 447 sc->sc_nexus = NULL; 448 sc->sc_tinfo[periph->periph_target].lubusy &= 449 ~(1<<periph->periph_lun); 450 if (sc->ready_list.tqh_first) 451 dosched = 1; /* start next command */ 452 --sc->sc_active; 453 SIOP_TRACE('d','a',stat,0) 454 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 455 TAILQ_REMOVE(&sc->ready_list, acb, chain); 456 SIOP_TRACE('d','r',stat,0) 457 } else { 458 register struct siop_acb *acb2; 459 for (acb2 = sc->nexus_list.tqh_first; acb2; 460 acb2 = acb2->chain.tqe_next) 461 if (acb2 == acb) { 462 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 463 sc->sc_tinfo[periph->periph_target].lubusy 464 &= ~(1<<periph->periph_lun); 465 --sc->sc_active; 466 break; 467 } 468 if (acb2) 469 ; 470 else if (acb->chain.tqe_next) { 471 TAILQ_REMOVE(&sc->ready_list, acb, chain); 472 --sc->sc_active; 473 } else { 474 printf("%s: can't find matching acb\n", 475 sc->sc_dev.dv_xname); 476 #ifdef DDB 477 /* Debugger(); */ 478 #endif 479 } 480 SIOP_TRACE('d','n',stat,0); 481 } 482 /* Put it on the free list. */ 483 acb->flags = ACB_FREE; 484 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 485 486 sc->sc_tinfo[periph->periph_target].cmds++; 487 488 scsipi_done(xs); 489 490 if (dosched && sc->sc_nexus == NULL) 491 siop_sched(sc); 492 } 493 494 void 495 siopabort(register struct siop_softc *sc, siop_regmap_p rp, const char *where) 496 { 497 #ifdef fix_this 498 int i; 499 #endif 500 501 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 502 sc->sc_dev.dv_xname, 503 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 504 505 if (sc->sc_active > 0) { 506 #ifdef TODO 507 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 508 WAIT_CIP (rp); 509 510 GET_SBIC_asr (rp, asr); 511 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 512 { 513 /* ok, get more drastic.. */ 514 515 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 516 delay(25); 517 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 518 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 519 520 return; 521 } 522 523 do 524 { 525 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 526 GET_SBIC_csr (rp, csr); 527 } 528 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 529 && (csr != SBIC_CSR_CMD_INVALID)); 530 #endif 531 532 /* lets just hope it worked.. */ 533 #ifdef fix_this 534 for (i = 0; i < 2; ++i) { 535 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 536 sc->sc_cur) { 537 printf ("siopabort: cleanup!\n"); 538 sc->sc_iob[i].sc_xs = NULL; 539 } 540 } 541 #endif /* fix_this */ 542 /* sc->sc_active = 0; */ 543 } 544 } 545 546 void 547 siopinitialize(struct siop_softc *sc) 548 { 549 int i; 550 u_int inhibit_sync; 551 extern u_long scsi_nosync; 552 extern int shift_nosync; 553 554 /* 555 * Need to check that scripts is on a long word boundary 556 * Also should verify that dev doesn't span non-contiguous 557 * physical pages. 558 */ 559 sc->sc_scriptspa = kvtop((void *)__UNCONST(scripts)); 560 561 /* 562 * malloc sc_acb to ensure that DS is on a long word boundary. 563 */ 564 565 sc->sc_acb = malloc(sizeof(struct siop_acb) * SIOP_NACB, 566 M_DEVBUF, M_NOWAIT); 567 if (sc->sc_acb == NULL) 568 panic("siopinitialize: ACB malloc failed!"); 569 570 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 571 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 572 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 573 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 574 if (sc->sc_minsync < 25) 575 sc->sc_minsync = 25; 576 if (sc->sc_clock_freq <= 25) { 577 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 578 sc->sc_tcp[0] = sc->sc_tcp[1]; 579 } else if (sc->sc_clock_freq <= 37) { 580 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 581 sc->sc_tcp[0] = sc->sc_tcp[2]; 582 } else if (sc->sc_clock_freq <= 50) { 583 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 584 sc->sc_tcp[0] = sc->sc_tcp[3]; 585 } else { 586 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 587 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 588 } 589 590 if (scsi_nosync) { 591 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 592 shift_nosync += 8; 593 #ifdef DEBUG 594 if (inhibit_sync) 595 printf("%s: Inhibiting synchronous transfer %02x\n", 596 sc->sc_dev.dv_xname, inhibit_sync); 597 #endif 598 for (i = 0; i < 8; ++i) 599 if (inhibit_sync & (1 << i)) 600 siop_inhibit_sync[i] = 1; 601 } 602 603 siopreset (sc); 604 } 605 606 void 607 siop_timeout(void *arg) 608 { 609 struct siop_acb *acb; 610 struct scsipi_periph *periph; 611 struct siop_softc *sc; 612 int s; 613 614 acb = arg; 615 periph = acb->xs->xs_periph; 616 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); 617 scsipi_printaddr(periph); 618 printf("timed out\n"); 619 620 s = splbio(); 621 622 acb->xs->error = XS_TIMEOUT; 623 siopreset(sc); 624 625 splx(s); 626 } 627 628 void 629 siopreset(struct siop_softc *sc) 630 { 631 siop_regmap_p rp; 632 u_int i, s; 633 u_char dummy; 634 struct siop_acb *acb; 635 636 rp = sc->sc_siopp; 637 638 if (sc->sc_flags & SIOP_ALIVE) 639 siopabort(sc, rp, "reset"); 640 641 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 642 643 s = splbio(); 644 645 /* 646 * Reset the chip 647 * XXX - is this really needed? 648 */ 649 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 650 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 651 rp->siop_istat &= ~SIOP_ISTAT_RST; 652 /* 653 * Reset SCSI bus (do we really want this?) 654 */ 655 rp->siop_sien = 0; 656 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 657 delay(1); 658 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 659 660 /* 661 * Set up various chip parameters 662 */ 663 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 664 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 665 rp->siop_dcntl = sc->sc_dcntl; 666 rp->siop_dmode = 0x80; /* burst length = 4 */ 667 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 668 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 669 rp->siop_scid = 1 << sc->sc_channel.chan_id; 670 rp->siop_dwt = 0x00; 671 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 672 rp->siop_ctest7 |= sc->sc_ctest7; 673 674 /* will need to re-negotiate sync xfers */ 675 memset(&sc->sc_sync, 0, sizeof (sc->sc_sync)); 676 677 i = rp->siop_istat; 678 if (i & SIOP_ISTAT_SIP) 679 dummy = rp->siop_sstat0; 680 if (i & SIOP_ISTAT_DIP) 681 dummy = rp->siop_dstat; 682 683 splx (s); 684 685 delay (siop_reset_delay * 1000); 686 printf("siop id %d reset V%d\n", sc->sc_channel.chan_id, 687 rp->siop_ctest8 >> 4); 688 689 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 690 TAILQ_INIT(&sc->ready_list); 691 TAILQ_INIT(&sc->nexus_list); 692 TAILQ_INIT(&sc->free_list); 693 sc->sc_nexus = NULL; 694 acb = sc->sc_acb; 695 memset(acb, 0, sizeof(struct siop_acb) * SIOP_NACB); 696 for (i = 0; i < SIOP_NACB; i++) { 697 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 698 acb++; 699 } 700 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 701 } else { 702 if (sc->sc_nexus != NULL) { 703 sc->sc_nexus->xs->error = XS_RESET; 704 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 705 } 706 while ((acb = sc->nexus_list.tqh_first) > 0) { 707 acb->xs->error = XS_RESET; 708 siop_scsidone(acb, acb->stat[0]); 709 } 710 } 711 712 sc->sc_flags |= SIOP_ALIVE; 713 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 714 /* enable SCSI and DMA interrupts */ 715 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 716 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 717 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 718 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 719 rp->siop_sien = sc->sc_sien; 720 rp->siop_dien = sc->sc_dien; 721 } 722 723 /* 724 * Setup Data Storage for 53C710 and start SCRIPTS processing 725 */ 726 727 void 728 siop_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, int clen, 729 u_char *buf, int len) 730 { 731 siop_regmap_p rp = sc->sc_siopp; 732 int nchain; 733 int count, tcount; 734 char *addr, *dmaend; 735 struct siop_acb *acb = sc->sc_nexus; 736 #ifdef DEBUG 737 int i; 738 #endif 739 740 #ifdef DEBUG 741 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 742 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 743 rp, &scripts, &acb->ds, sc->sc_active); 744 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 745 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 746 rp->siop_sien, rp->siop_dien); 747 #ifdef DDB 748 /*Debugger();*/ 749 #endif 750 } 751 #endif 752 acb->msgout[0] = MSG_IDENTIFY | lun; 753 if (siop_allow_disc[target] & 2 || 754 (siop_allow_disc[target] && len == 0)) 755 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 756 acb->status = 0; 757 acb->stat[0] = -1; 758 acb->msg[0] = -1; 759 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 760 acb->ds.idlen = 1; 761 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 762 acb->ds.cmdlen = clen; 763 acb->ds.cmdbuf = (char *) kvtop(cbuf); 764 acb->ds.stslen = 1; 765 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 766 acb->ds.msglen = 1; 767 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 768 acb->msg[1] = -1; 769 acb->ds.msginlen = 1; 770 acb->ds.extmsglen = 1; 771 acb->ds.synmsglen = 3; 772 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 773 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 774 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 775 memset(&acb->ds.chain, 0, sizeof (acb->ds.chain)); 776 777 /* 778 * Negotiate wide is the initial negotiation state; since the 53c710 779 * doesn't do wide transfers, just begin the synchronous transfer 780 * negotation here. 781 */ 782 if (sc->sc_sync[target].state == NEG_WIDE) { 783 if (siop_inhibit_sync[target]) { 784 sc->sc_sync[target].state = NEG_DONE; 785 sc->sc_sync[target].sbcl = 0; 786 sc->sc_sync[target].sxfer = 0; 787 #ifdef DEBUG 788 if (siopsync_debug) 789 printf ("Forcing target %d asynchronous\n", target); 790 #endif 791 } 792 else { 793 acb->msg[2] = -1; 794 acb->msgout[1] = MSG_EXT_MESSAGE; 795 acb->msgout[2] = 3; 796 acb->msgout[3] = MSG_SYNC_REQ; 797 #ifdef MAXTOR_SYNC_KLUDGE 798 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 799 #else 800 acb->msgout[4] = sc->sc_minsync; 801 #endif 802 acb->msgout[5] = SIOP_MAX_OFFSET; 803 acb->ds.idlen = 6; 804 sc->sc_sync[target].state = NEG_WAITS; 805 #ifdef DEBUG 806 if (siopsync_debug) 807 printf ("Sending sync request to target %d\n", target); 808 #endif 809 } 810 } 811 812 /* 813 * Build physical DMA addresses for scatter/gather I/O 814 */ 815 acb->iob_buf = buf; 816 acb->iob_len = len; 817 acb->iob_curbuf = acb->iob_curlen = 0; 818 nchain = 0; 819 count = len; 820 addr = buf; 821 dmaend = NULL; 822 while (count > 0) { 823 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 824 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET))) 825 tcount = count; 826 acb->ds.chain[nchain].datalen = tcount; 827 addr += tcount; 828 count -= tcount; 829 if (acb->ds.chain[nchain].databuf == dmaend) { 830 dmaend += acb->ds.chain[nchain].datalen; 831 acb->ds.chain[nchain].datalen = 0; 832 acb->ds.chain[--nchain].datalen += tcount; 833 #ifdef DEBUG 834 ++siopdma_hits; 835 #endif 836 } 837 else { 838 dmaend = acb->ds.chain[nchain].databuf + 839 acb->ds.chain[nchain].datalen; 840 acb->ds.chain[nchain].datalen = tcount; 841 #ifdef DEBUG 842 if (nchain) /* Don't count miss on first one */ 843 ++siopdma_misses; 844 #endif 845 } 846 ++nchain; 847 } 848 #ifdef DEBUG 849 if (nchain != 1 && len != 0 && siop_debug & 3) { 850 printf ("DMA chaining set: %d\n", nchain); 851 for (i = 0; i < nchain; ++i) { 852 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 853 acb->ds.chain[i].datalen); 854 } 855 } 856 #endif 857 858 /* push data cache for all data the 53c710 needs to access */ 859 dma_cachectl ((void *)acb, sizeof (struct siop_acb)); 860 dma_cachectl (cbuf, clen); 861 if (buf != NULL && len != 0) 862 dma_cachectl (buf, len); 863 #ifdef DEBUG 864 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 865 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 866 rp, &scripts, &acb->ds, sc->sc_active); 867 #ifdef DDB 868 /*Debugger();*/ 869 #endif 870 } 871 #endif 872 if (sc->nexus_list.tqh_first == NULL) { 873 callout_reset(&acb->xs->xs_callout, 874 mstohz(acb->xs->timeout) + 1, siop_timeout, acb); 875 if (rp->siop_istat & SIOP_ISTAT_CON) 876 printf("%s: siop_select while connected?\n", 877 sc->sc_dev.dv_xname); 878 rp->siop_temp = 0; 879 rp->siop_sbcl = sc->sc_sync[target].sbcl; 880 rp->siop_dsa = kvtop((void *)&acb->ds); 881 rp->siop_dsp = sc->sc_scriptspa; 882 SIOP_TRACE('s',1,0,0) 883 } else { 884 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 885 rp->siop_istat = SIOP_ISTAT_SIGP; 886 SIOP_TRACE('s',2,0,0); 887 } 888 else { 889 SIOP_TRACE('s',3,rp->siop_istat,0); 890 } 891 } 892 #ifdef DEBUG 893 ++siopstarts; 894 #endif 895 } 896 897 /* 898 * Process a DMA or SCSI interrupt from the 53C710 SIOP 899 */ 900 901 int 902 siop_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 903 u_char sstat0, int *status) 904 { 905 siop_regmap_p rp = sc->sc_siopp; 906 struct siop_acb *acb = sc->sc_nexus; 907 int target = 0; 908 int dfifo, dbc, sstat1; 909 910 dfifo = rp->siop_dfifo; 911 dbc = rp->siop_dbc0; 912 sstat1 = rp->siop_sstat1; 913 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 914 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 915 ; 916 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 917 #ifdef DEBUG 918 ++siopints; 919 #if 0 920 if (siop_debug & 0x100) { 921 DCIAS(&acb->stat[0]); /* XXX */ 922 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 923 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 924 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 925 acb->msg[0], acb->msg[1], acb->msg[2], 926 acb->msg[3], acb->msg[4], acb->msg[5]); 927 } 928 #endif 929 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 930 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 931 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 932 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 933 sc->sc_scriptspa + sizeof(scripts)); 934 printf(" istat %x dstat %x sstat0 %x\n", 935 istat, dstat, sstat0); 936 #ifdef DDB 937 Debugger(); 938 #endif 939 } 940 #endif 941 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 942 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 943 /* Normal completion status, or check condition */ 944 #ifdef DEBUG 945 if (rp->siop_dsa != kvtop((void *)&acb->ds)) { 946 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 947 (unsigned)kvtop((void *)&acb->ds)); 948 panic("*** siop DSA invalid ***"); 949 } 950 #endif 951 target = acb->xs->xs_periph->periph_target; 952 if (sc->sc_sync[target].state == NEG_WAITS) { 953 if (acb->msg[1] == 0xff) 954 printf ("%s: target %d ignored sync request\n", 955 sc->sc_dev.dv_xname, target); 956 else if (acb->msg[1] == MSG_REJECT) 957 printf ("%s: target %d rejected sync request\n", 958 sc->sc_dev.dv_xname, target); 959 else 960 /* XXX - need to set sync transfer parameters */ 961 printf("%s: target %d (sync) %02x %02x %02x\n", 962 sc->sc_dev.dv_xname, target, acb->msg[1], 963 acb->msg[2], acb->msg[3]); 964 sc->sc_sync[target].state = NEG_DONE; 965 } 966 dma_cachectl(&acb->stat[0], 1); 967 *status = acb->stat[0]; 968 #ifdef DEBUG 969 if (rp->siop_sbcl & SIOP_BSY) { 970 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 971 rp, &scripts, &acb->ds);*/ 972 #ifdef DDB 973 /*Debugger();*/ 974 #endif 975 } 976 if (acb->msg[0] != 0x00) 977 printf("%s: message was not COMMAND COMPLETE: %x\n", 978 sc->sc_dev.dv_xname, acb->msg[0]); 979 #endif 980 if (sc->nexus_list.tqh_first) 981 rp->siop_dcntl |= SIOP_DCNTL_STD; 982 return 1; 983 } 984 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 985 target = acb->xs->xs_periph->periph_target; 986 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 987 acb->msg[3] == MSG_SYNC_REQ) { 988 #ifdef DEBUG 989 if (siopsync_debug) 990 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 991 acb->msg[0], acb->msg[1], acb->msg[2], 992 acb->msg[3], acb->msg[4], acb->msg[5]); 993 #endif 994 sc->sc_sync[target].sxfer = 0; 995 sc->sc_sync[target].sbcl = 0; 996 if (acb->msg[2] == 3 && 997 acb->msg[3] == MSG_SYNC_REQ && 998 acb->msg[5] != 0) { 999 #ifdef MAXTOR_KLUDGE 1000 /* 1001 * Kludge for my Maxtor XT8580S 1002 * It accepts whatever we request, even 1003 * though it won't work. So we ask for 1004 * a short period than we can handle. If 1005 * the device says it can do it, use 208ns. 1006 * If the device says it can do less than 1007 * 100ns, then we limit it to 100ns. 1008 */ 1009 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1010 #ifdef DEBUG 1011 printf ("%d: target %d wanted %dns period\n", 1012 sc->sc_dev.dv_xname, target, 1013 acb->msg[4] * 4); 1014 #endif 1015 if (acb->msg[4] == 50 / 4) 1016 acb->msg[4] = 208 / 4; 1017 else 1018 acb->msg[4] = 100 / 4; 1019 } 1020 #endif /* MAXTOR_KLUDGE */ 1021 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1022 sc->sc_dev.dv_xname, target, 1023 acb->msg[4] * 4, acb->msg[5]); 1024 scsi_period_to_siop (sc, target); 1025 } 1026 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1027 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1028 if (sc->sc_sync[target].state == NEG_WAITS) { 1029 sc->sc_sync[target].state = NEG_DONE; 1030 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1031 return(0); 1032 } 1033 rp->siop_dcntl |= SIOP_DCNTL_STD; 1034 sc->sc_sync[target].state = NEG_DONE; 1035 return (0); 1036 } 1037 /* XXX - not SDTR message */ 1038 } 1039 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 1040 #ifdef DEBUG 1041 ++siopphmm; 1042 if (acb == NULL) 1043 printf("%s: Phase mismatch with no active command?\n", 1044 sc->sc_dev.dv_xname); 1045 #endif 1046 if (acb->iob_len) { 1047 int adjust; 1048 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1049 if (sstat1 & SIOP_SSTAT1_ORF) 1050 ++adjust; 1051 if (sstat1 & SIOP_SSTAT1_OLF) 1052 ++adjust; 1053 acb->iob_curlen = 1054 *((long *)__UNVOLATILE(&rp->siop_dcmd)) & 0xffffff; 1055 acb->iob_curlen += adjust; 1056 acb->iob_curbuf = 1057 *((long *)__UNVOLATILE(&rp->siop_dnad)) - adjust; 1058 #ifdef DEBUG 1059 if (siop_debug & 0x100) { 1060 int i; 1061 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1062 acb->iob_curbuf, acb->iob_curlen, dfifo, 1063 dbc, sstat1, adjust, rp->siop_sbcl, 1064 siopstarts, acb); 1065 if (acb->ds.chain[1].datalen) { 1066 for (i = 0; acb->ds.chain[i].datalen; ++i) 1067 printf("chain[%d] addr %p len %lx\n", 1068 i, acb->ds.chain[i].databuf, 1069 acb->ds.chain[i].datalen); 1070 } 1071 } 1072 #endif 1073 dma_cachectl ((void *)acb, sizeof(*acb)); 1074 } 1075 #ifdef DEBUG 1076 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1077 if (siop_debug & 9) 1078 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1079 rp->siop_sbcl, 1080 rp->siop_dsp - sc->sc_scriptspa, 1081 *((volatile long *)&rp->siop_dcmd)); 1082 #endif 1083 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1084 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1085 rp->siop_sbcl, rp->siop_dsp); 1086 #if defined(DEBUG) && defined(DDB) 1087 /*Debugger(); XXX is*/ 1088 #endif 1089 } 1090 switch (rp->siop_sbcl & 7) { 1091 case 0: /* data out */ 1092 case 1: /* data in */ 1093 case 2: /* status */ 1094 case 3: /* command */ 1095 case 6: /* message in */ 1096 case 7: /* message out */ 1097 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1098 break; 1099 default: 1100 goto bad_phase; 1101 } 1102 return 0; 1103 } 1104 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1105 #ifdef DEBUG 1106 if (acb == NULL) 1107 printf("%s: Select timeout with no active command?\n", 1108 sc->sc_dev.dv_xname); 1109 if (rp->siop_sbcl & SIOP_BSY) { 1110 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1111 rp, &scripts, &acb->ds); 1112 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1113 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1114 if (!(rp->siop_sbcl & SIOP_BSY)) { 1115 printf ("Yikes, it's not busy now!\n"); 1116 #if 0 1117 *status = -1; 1118 if (sc->nexus_list.tqh_first) 1119 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1120 return 1; 1121 #endif 1122 } 1123 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1124 return (0); 1125 #ifdef DDB 1126 Debugger(); 1127 #endif 1128 } 1129 #endif 1130 *status = -1; 1131 acb->xs->error = XS_SELTIMEOUT; 1132 if (sc->nexus_list.tqh_first) 1133 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1134 return 1; 1135 } 1136 if (acb) 1137 target = acb->xs->xs_periph->periph_target; 1138 else 1139 target = 7; 1140 if (sstat0 & SIOP_SSTAT0_UDC) { 1141 #ifdef DEBUG 1142 if (acb == NULL) 1143 printf("%s: Unexpected disconnect with no active command?\n", 1144 sc->sc_dev.dv_xname); 1145 printf ("%s: target %d disconnected unexpectedly\n", 1146 sc->sc_dev.dv_xname, target); 1147 #endif 1148 #if 0 1149 siopabort (sc, rp, "siopchkintr"); 1150 #endif 1151 *status = STS_BUSY; 1152 if (sc->nexus_list.tqh_first) 1153 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1154 return (acb != NULL); 1155 } 1156 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1157 rp->siop_dsps == 0xff02)) { 1158 #ifdef DEBUG 1159 if (siop_debug & 0x100) 1160 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", 1161 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1162 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1163 acb->iob_curbuf, acb->iob_curlen, 1164 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1165 #endif 1166 if (acb == NULL) { 1167 printf("%s: Disconnect with no active command?\n", 1168 sc->sc_dev.dv_xname); 1169 return (0); 1170 } 1171 /* 1172 * XXXX need to update iob_curbuf/iob_curlen to reflect 1173 * current data transferred. If device disconnected in 1174 * the middle of a DMA block, they should already be set 1175 * by the phase change interrupt. If the disconnect 1176 * occurs on a DMA block boundary, we have to figure out 1177 * which DMA block it was. 1178 */ 1179 if (acb->iob_len && rp->siop_temp) { 1180 int n = rp->siop_temp - sc->sc_scriptspa; 1181 1182 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1183 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1184 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1185 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1186 if (n < Ent_datain) 1187 n = (n - Ent_dataout) / 16; 1188 else 1189 n = (n - Ent_datain) / 16; 1190 if (n <= 0 && n > DMAMAXIO) 1191 printf("TEMP invalid %d\n", n); 1192 else { 1193 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1194 acb->iob_curlen = acb->ds.chain[n].datalen; 1195 } 1196 #ifdef DEBUG 1197 if (siop_debug & 0x100) { 1198 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1199 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1200 acb->iob_curlen); 1201 } 1202 #endif 1203 } 1204 /* 1205 * If data transfer was interrupted by disconnect, iob_curbuf 1206 * and iob_curlen should reflect the point of interruption. 1207 * Adjust the DMA chain so that the data transfer begins 1208 * at the appropriate place upon reselection. 1209 * XXX This should only be done on save data pointer message? 1210 */ 1211 if (acb->iob_curlen) { 1212 int i, j; 1213 1214 #ifdef DEBUG 1215 if (siop_debug & 0x100) 1216 printf ("%s: adjusting DMA chain\n", 1217 sc->sc_dev.dv_xname); 1218 if (rp->siop_dsps == 0xff02) 1219 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1220 sc->sc_dev.dv_xname, 1 << target); 1221 #endif 1222 /* XXX is: if (rp->siop_dsps != 0xff02) { */ 1223 /* not disconnected without save data ptr */ 1224 for (i = 0; i < DMAMAXIO; ++i) { 1225 if (acb->ds.chain[i].datalen == 0) 1226 break; 1227 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1228 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1229 acb->ds.chain[i].datalen)) 1230 break; 1231 } 1232 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1233 printf("couldn't find saved data pointer: "); 1234 printf("curbuf %lx curlen %lx i %d\n", 1235 acb->iob_curbuf, acb->iob_curlen, i); 1236 #ifdef DDB 1237 Debugger(); 1238 #endif 1239 } 1240 /* XXX is: } */ 1241 #ifdef DEBUG 1242 if (siop_debug & 0x100) 1243 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1244 acb->ds.chain[0].databuf, 1245 acb->ds.chain[0].datalen, 1246 acb->iob_curbuf, 1247 acb->iob_curlen); 1248 #endif 1249 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1250 acb->ds.chain[0].datalen = acb->iob_curlen; 1251 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1252 #ifdef DEBUG 1253 if (siop_debug & 0x100) 1254 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1255 acb->ds.chain[j].databuf, 1256 acb->ds.chain[j].datalen, 1257 acb->ds.chain[i].databuf, 1258 acb->ds.chain[i].datalen); 1259 #endif 1260 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1261 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1262 } 1263 if (j < DMAMAXIO) 1264 acb->ds.chain[j].datalen = 0; 1265 DCIAS(kvtop((void *)&acb->ds.chain)); 1266 } 1267 ++sc->sc_tinfo[target].dconns; 1268 /* 1269 * add nexus to waiting list 1270 * clear nexus 1271 * try to start another command for another target/lun 1272 */ 1273 acb->status = sc->sc_flags & SIOP_INTSOFF; 1274 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1275 sc->sc_nexus = NULL; /* no current device */ 1276 /* start script to wait for reselect */ 1277 if (sc->sc_nexus == NULL) 1278 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1279 /* XXXX start another command ? */ 1280 if (sc->ready_list.tqh_first) 1281 siop_sched(sc); 1282 return (0); 1283 } 1284 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1285 int reselid = rp->siop_scratch & 0x7f; 1286 int reselun = rp->siop_sfbr & 0x07; 1287 1288 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1289 #ifdef DEBUG 1290 if (siop_debug & 0x100) 1291 printf ("%s: target ID %02x reselected dsps %lx\n", 1292 sc->sc_dev.dv_xname, reselid, 1293 rp->siop_dsps); 1294 if ((rp->siop_sfbr & 0x80) == 0) 1295 printf("%s: Reselect message in was not identify: %x\n", 1296 sc->sc_dev.dv_xname, rp->siop_sfbr); 1297 #endif 1298 if (sc->sc_nexus) { 1299 #ifdef DEBUG 1300 if (siop_debug & 0x100) 1301 printf ("%s: reselect ID %02x w/active\n", 1302 sc->sc_dev.dv_xname, reselid); 1303 #endif 1304 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1305 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1306 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1307 --sc->sc_active; 1308 } 1309 /* 1310 * locate acb of reselecting device 1311 * set sc->sc_nexus to acb 1312 */ 1313 for (acb = sc->nexus_list.tqh_first; acb; 1314 acb = acb->chain.tqe_next) { 1315 if (reselid != (acb->ds.scsi_addr >> 16) || 1316 reselun != (acb->msgout[0] & 0x07)) 1317 continue; 1318 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1319 sc->sc_nexus = acb; 1320 sc->sc_flags |= acb->status; 1321 acb->status = 0; 1322 DCIAS(kvtop(&acb->stat[0])); 1323 rp->siop_dsa = kvtop((void *)&acb->ds); 1324 rp->siop_sxfer = 1325 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1326 rp->siop_sbcl = 1327 sc->sc_sync[acb->xs->xs_periph->periph_target].sbcl; 1328 break; 1329 } 1330 if (acb == NULL) { 1331 printf("%s: target ID %02x reselect nexus_list %p\n", 1332 sc->sc_dev.dv_xname, reselid, 1333 sc->nexus_list.tqh_first); 1334 panic("unable to find reselecting device"); 1335 } 1336 dma_cachectl ((void *)acb, sizeof(*acb)); 1337 rp->siop_temp = 0; 1338 rp->siop_dcntl |= SIOP_DCNTL_STD; 1339 return (0); 1340 } 1341 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1342 #ifdef DEBUG 1343 u_short ctest2 = rp->siop_ctest2; 1344 1345 /* reselect was interrupted (by Sig_P or select) */ 1346 if (siop_debug & 0x100 || 1347 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1348 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1349 sc->sc_dev.dv_xname, rp->siop_scntl1, 1350 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1351 #endif 1352 /* XXX assumes it was not select */ 1353 if (sc->sc_nexus == NULL) { 1354 #ifdef DEBUG 1355 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1356 sc->sc_dev.dv_xname); 1357 #if 0 1358 siop_dump(sc); 1359 #ifdef DDB 1360 Debugger(); 1361 #endif 1362 #endif 1363 #endif 1364 rp->siop_dcntl |= SIOP_DCNTL_STD; 1365 return(0); 1366 } 1367 target = sc->sc_nexus->xs->xs_periph->periph_target; 1368 rp->siop_temp = 0; 1369 rp->siop_dsa = kvtop((void *)&sc->sc_nexus->ds); 1370 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1371 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1372 rp->siop_dsp = sc->sc_scriptspa; 1373 return (0); 1374 } 1375 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1376 if (acb == NULL) 1377 printf("%s: Bad message-in with no active command?\n", 1378 sc->sc_dev.dv_xname); 1379 /* Unrecognized message in byte */ 1380 dma_cachectl (&acb->msg[1],1); 1381 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1382 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1383 /* what should be done here? */ 1384 DCIAS(kvtop(&acb->msg[1])); 1385 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1386 return (0); 1387 } 1388 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1389 /* Status phase wasn't followed by message in phase? */ 1390 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1391 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1392 if (rp->siop_sbcl == 0xa7) { 1393 /* It is now, just continue the script? */ 1394 rp->siop_dcntl |= SIOP_DCNTL_STD; 1395 return (0); 1396 } 1397 } 1398 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1399 dma_cachectl (&acb->stat[0], 1); 1400 dma_cachectl (&acb->msg[0], 1); 1401 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1402 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1403 rp->siop_sbcl); 1404 siopreset (sc); 1405 *status = -1; 1406 return 0; /* siopreset has cleaned up */ 1407 } 1408 if (sstat0 & SIOP_SSTAT0_SGE) 1409 printf ("SIOP: SCSI Gross Error\n"); 1410 if (sstat0 & SIOP_SSTAT0_PAR) 1411 printf ("SIOP: Parity Error\n"); 1412 if (dstat & SIOP_DSTAT_IID) 1413 printf ("SIOP: Invalid instruction detected\n"); 1414 bad_phase: 1415 /* 1416 * temporary panic for unhandled conditions 1417 * displays various things about the 53C710 status and registers 1418 * then panics. 1419 * XXXX need to clean this up to print out the info, reset, and continue 1420 */ 1421 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1422 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", 1423 sc->sc_scriptspa, (unsigned)kvtop((void *)&acb->ds), 1424 (unsigned)kvtop((void *)__UNVOLATILE(rp)), rp->siop_dsp, 1425 *((volatile long *)&rp->siop_dcmd)); 1426 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1427 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1428 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1429 #ifdef DEBUG 1430 if (siop_debug & 0x20) 1431 panic("siopchkintr: **** temp ****"); 1432 #endif 1433 #ifdef DDB 1434 Debugger (); 1435 #endif 1436 siopreset (sc); /* hard reset */ 1437 *status = -1; 1438 return 0; /* siopreset cleaned up */ 1439 } 1440 1441 void 1442 siop_select(struct siop_softc *sc) 1443 { 1444 siop_regmap_p rp; 1445 struct siop_acb *acb = sc->sc_nexus; 1446 1447 #ifdef DEBUG 1448 if (siop_debug & 1) 1449 printf ("%s: select ", sc->sc_dev.dv_xname); 1450 #endif 1451 1452 rp = sc->sc_siopp; 1453 if (acb->xs->xs_control & XS_CTL_POLL || siop_no_dma) { 1454 sc->sc_flags |= SIOP_INTSOFF; 1455 sc->sc_flags &= ~SIOP_INTDEFER; 1456 if ((rp->siop_istat & 0x08) == 0) { 1457 rp->siop_sien = 0; 1458 rp->siop_dien = 0; 1459 } 1460 #if 0 1461 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1462 sc->sc_flags &= ~SIOP_INTSOFF; 1463 if ((rp->siop_istat & 0x08) == 0) { 1464 rp->siop_sien = sc->sc_sien; 1465 rp->siop_dien = sc->sc_dien; 1466 } 1467 #endif 1468 } 1469 #ifdef DEBUG 1470 if (siop_debug & 1) 1471 printf ("siop_select: target %x cmd %02x ds %p\n", 1472 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1473 &sc->sc_nexus->ds); 1474 #endif 1475 1476 siop_start(sc, acb->xs->xs_periph->periph_target, 1477 acb->xs->xs_periph->periph_lun, 1478 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1479 1480 return; 1481 } 1482 1483 /* 1484 * 53C710 interrupt handler 1485 */ 1486 1487 void 1488 siopintr(register struct siop_softc *sc) 1489 { 1490 siop_regmap_p rp; 1491 register u_char istat, dstat, sstat0; 1492 int status; 1493 int s = splbio(); 1494 1495 istat = sc->sc_istat; 1496 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1497 splx(s); 1498 return; 1499 } 1500 1501 /* Got a valid interrupt on this device */ 1502 rp = sc->sc_siopp; 1503 dstat = sc->sc_dstat; 1504 sstat0 = sc->sc_sstat0; 1505 if (dstat & SIOP_DSTAT_SIR) 1506 sc->sc_intcode = rp->siop_dsps; 1507 sc->sc_istat = 0; 1508 #ifdef DEBUG 1509 if (siop_debug & 1) 1510 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1511 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1512 if (!sc->sc_active) { 1513 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1514 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1515 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1516 } 1517 #endif 1518 1519 #ifdef DEBUG 1520 if (siop_debug & 5) { 1521 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1522 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1523 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1524 rp->siop_dsps, rp->siop_sbcl, 1525 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1526 } 1527 #endif 1528 if (sc->sc_flags & SIOP_INTDEFER) { 1529 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1530 rp->siop_sien = sc->sc_sien; 1531 rp->siop_dien = sc->sc_dien; 1532 } 1533 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1534 #if 1 1535 if (status == 0xff) 1536 printf ("siopintr: status == 0xff\n"); 1537 #endif 1538 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1539 #if 0 1540 if (rp->siop_sbcl & SIOP_BSY) { 1541 printf ("%s: SCSI bus busy at completion", 1542 sc->sc_dev.dv_xname); 1543 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1544 sc->sc_nexus->xs->xs_periph->periph_target, 1545 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1546 rp->siop_dsp - sc->sc_scriptspa); 1547 } 1548 #endif 1549 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1550 sc->sc_nexus->stat[0] : -1); 1551 } 1552 } 1553 splx(s); 1554 } 1555 1556 /* 1557 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1558 * not be correct for other 53c710 boards. 1559 * 1560 */ 1561 void 1562 scsi_period_to_siop(struct siop_softc *sc, int target) 1563 { 1564 int period, offset, sxfer, sbcl = 0; 1565 #ifdef DEBUG_SYNC 1566 int i; 1567 #endif 1568 1569 period = sc->sc_nexus->msg[4]; 1570 offset = sc->sc_nexus->msg[5]; 1571 #ifdef DEBUG_SYNC 1572 sxfer = 0; 1573 if (offset <= SIOP_MAX_OFFSET) 1574 sxfer = offset; 1575 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1576 if (period <= sync_tab[i].p) { 1577 sxfer |= sync_tab[i].r & 0x70; 1578 sbcl = sync_tab[i].r & 0x03; 1579 break; 1580 } 1581 } 1582 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1583 #endif 1584 for (sbcl = 1; sbcl < 4; ++sbcl) { 1585 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1586 if (sxfer >= 0 && sxfer <= 7) 1587 break; 1588 } 1589 if (sbcl > 3) { 1590 printf("siop sync: unable to compute sync params for period %dns\n", 1591 period * 4); 1592 /* 1593 * XXX need to pick a value we can do and renegotiate 1594 */ 1595 sxfer = sbcl = 0; 1596 } else { 1597 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1598 offset : SIOP_MAX_OFFSET); 1599 #ifdef DEBUG_SYNC 1600 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1601 period * 4, sxfer, sbcl); 1602 printf(" actual period %dns\n", 1603 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1604 #endif 1605 } 1606 sc->sc_sync[target].sxfer = sxfer; 1607 sc->sc_sync[target].sbcl = sbcl; 1608 #ifdef DEBUG_SYNC 1609 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1610 #endif 1611 } 1612 1613 #ifdef DEBUG 1614 1615 #if SIOP_TRACE_SIZE 1616 void 1617 siop_dump_trace(void) 1618 { 1619 int i; 1620 1621 printf("siop trace: next index %d\n", siop_trix); 1622 i = siop_trix; 1623 do { 1624 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1625 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1626 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1627 } while (i != siop_trix); 1628 } 1629 #endif 1630 1631 void 1632 siop_dump_acb(struct siop_acb *acb) 1633 { 1634 u_char *b = (u_char *) &acb->cmd; 1635 int i; 1636 1637 printf("acb@%p ", acb); 1638 if (acb->xs == NULL) { 1639 printf("<unused>\n"); 1640 return; 1641 } 1642 printf("(%d:%d) flags %2x clen %2d cmd ", 1643 acb->xs->xs_periph->periph_target, 1644 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1645 for (i = acb->clen; i; --i) 1646 printf(" %02x", *b++); 1647 printf("\n"); 1648 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1649 acb->xs->datalen); 1650 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1651 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1652 } 1653 1654 void 1655 siop_dump(struct siop_softc *sc) 1656 { 1657 struct siop_acb *acb; 1658 siop_regmap_p rp = sc->sc_siopp; 1659 int s; 1660 int i; 1661 1662 s = splbio(); 1663 #if SIOP_TRACE_SIZE 1664 siop_dump_trace(); 1665 #endif 1666 printf("%s@%p regs %p istat %x\n", 1667 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1668 if ((acb = sc->free_list.tqh_first) > 0) { 1669 printf("Free list:\n"); 1670 while (acb) { 1671 siop_dump_acb(acb); 1672 acb = acb->chain.tqe_next; 1673 } 1674 } 1675 if ((acb = sc->ready_list.tqh_first) > 0) { 1676 printf("Ready list:\n"); 1677 while (acb) { 1678 siop_dump_acb(acb); 1679 acb = acb->chain.tqe_next; 1680 } 1681 } 1682 if ((acb = sc->nexus_list.tqh_first) > 0) { 1683 printf("Nexus list:\n"); 1684 while (acb) { 1685 siop_dump_acb(acb); 1686 acb = acb->chain.tqe_next; 1687 } 1688 } 1689 if (sc->sc_nexus) { 1690 printf("Nexus:\n"); 1691 siop_dump_acb(sc->sc_nexus); 1692 } 1693 for (i = 0; i < 8; ++i) { 1694 if (sc->sc_tinfo[i].cmds > 2) { 1695 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1696 i, sc->sc_tinfo[i].cmds, 1697 sc->sc_tinfo[i].dconns, 1698 sc->sc_tinfo[i].lubusy); 1699 } 1700 } 1701 splx(s); 1702 } 1703 #endif 1704