siop.c revision 1.50
1 /* $NetBSD: siop.c,v 1.50 2003/08/07 16:26:44 agc 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 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)siop.c 7.5 (Berkeley) 5/4/91 72 */ 73 74 /* 75 * AMIGA 53C710 scsi adaptor driver 76 */ 77 78 #include "opt_ddb.h" 79 80 #include <sys/cdefs.h> 81 __KERNEL_RCSID(0, "$NetBSD: siop.c,v 1.50 2003/08/07 16:26:44 agc Exp $"); 82 83 #include <sys/param.h> 84 #include <sys/systm.h> 85 #include <sys/device.h> 86 #include <sys/disklabel.h> 87 #include <sys/buf.h> 88 #include <sys/malloc.h> 89 90 #include <uvm/uvm_extern.h> 91 92 #include <dev/scsipi/scsi_all.h> 93 #include <dev/scsipi/scsipi_all.h> 94 #include <dev/scsipi/scsiconf.h> 95 #include <machine/cpu.h> 96 #ifdef __m68k__ 97 #include <m68k/cacheops.h> 98 #endif 99 #include <amiga/amiga/custom.h> 100 #include <amiga/amiga/isr.h> 101 #include <amiga/dev/siopreg.h> 102 #include <amiga/dev/siopvar.h> 103 104 /* 105 * SCSI delays 106 * In u-seconds, primarily for state changes on the SPC. 107 */ 108 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 109 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 110 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 111 112 void siop_select(struct siop_softc *); 113 void siopabort(struct siop_softc *, siop_regmap_p, char *); 114 void sioperror(struct siop_softc *, siop_regmap_p, u_char); 115 void siopstart(struct siop_softc *); 116 int siop_checkintr(struct siop_softc *, u_char, u_char, u_char, int *); 117 void siopreset(struct siop_softc *); 118 void siopsetdelay(int); 119 void siop_scsidone(struct siop_acb *, int); 120 void siop_sched(struct siop_softc *); 121 void siop_poll(struct siop_softc *, struct siop_acb *); 122 void siopintr(struct siop_softc *); 123 void scsi_period_to_siop(struct siop_softc *, int); 124 void siop_start(struct siop_softc *, int, int, u_char *, int, u_char *, int); 125 void siop_dump_acb(struct siop_acb *); 126 127 /* 53C710 script */ 128 const 129 #include <amiga/dev/siop_script.out> 130 131 /* default to not inhibit sync negotiation on any drive */ 132 u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ 133 u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; 134 int siop_no_dma = 0; 135 136 int siop_reset_delay = 250; /* delay after reset, in milleseconds */ 137 138 int siop_cmd_wait = SCSI_CMD_WAIT; 139 int siop_data_wait = SCSI_DATA_WAIT; 140 int siop_init_wait = SCSI_INIT_WAIT; 141 142 #ifdef DEBUG_SYNC 143 /* 144 * sync period transfer lookup - only valid for 66Mhz clock 145 */ 146 static struct { 147 unsigned char p; /* period from sync request message */ 148 unsigned char r; /* siop_period << 4 | sbcl */ 149 } sync_tab[] = { 150 { 60/4, 0<<4 | 1}, 151 { 76/4, 1<<4 | 1}, 152 { 92/4, 2<<4 | 1}, 153 { 92/4, 0<<4 | 2}, 154 {108/4, 3<<4 | 1}, 155 {116/4, 1<<4 | 2}, 156 {120/4, 4<<4 | 1}, 157 {120/4, 0<<4 | 3}, 158 {136/4, 5<<4 | 1}, 159 {140/4, 2<<4 | 2}, 160 {152/4, 6<<4 | 1}, 161 {152/4, 1<<4 | 3}, 162 {164/4, 3<<4 | 2}, 163 {168/4, 7<<4 | 1}, 164 {180/4, 2<<4 | 3}, 165 {184/4, 4<<4 | 2}, 166 {208/4, 5<<4 | 2}, 167 {212/4, 3<<4 | 3}, 168 {232/4, 6<<4 | 2}, 169 {240/4, 4<<4 | 3}, 170 {256/4, 7<<4 | 2}, 171 {272/4, 5<<4 | 3}, 172 {300/4, 6<<4 | 3}, 173 {332/4, 7<<4 | 3} 174 }; 175 #endif 176 177 #ifdef DEBUG 178 /* 179 * 0x01 - full debug 180 * 0x02 - DMA chaining 181 * 0x04 - siopintr 182 * 0x08 - phase mismatch 183 * 0x10 - <not used> 184 * 0x20 - panic on unhandled exceptions 185 * 0x100 - disconnect/reselect 186 */ 187 int siop_debug = 0; 188 int siopsync_debug = 0; 189 int siopdma_hits = 0; 190 int siopdma_misses = 0; 191 int siopchain_ints = 0; 192 int siopstarts = 0; 193 int siopints = 0; 194 int siopphmm = 0; 195 #define SIOP_TRACE_SIZE 128 196 #define SIOP_TRACE(a,b,c,d) \ 197 siop_trbuf[siop_trix] = (a); \ 198 siop_trbuf[siop_trix+1] = (b); \ 199 siop_trbuf[siop_trix+2] = (c); \ 200 siop_trbuf[siop_trix+3] = (d); \ 201 siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); 202 u_char siop_trbuf[SIOP_TRACE_SIZE]; 203 int siop_trix; 204 void siop_dump(struct siop_softc *); 205 void siop_dump_trace(void); 206 #else 207 #define SIOP_TRACE(a,b,c,d) 208 #endif 209 210 211 /* 212 * default minphys routine for siop based controllers 213 */ 214 void 215 siop_minphys(struct buf *bp) 216 { 217 218 /* 219 * No max transfer at this level. 220 */ 221 minphys(bp); 222 } 223 224 /* 225 * used by specific siop controller 226 * 227 */ 228 void 229 siop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 230 void *arg) 231 { 232 struct scsipi_xfer *xs; 233 struct scsipi_periph *periph; 234 struct siop_acb *acb; 235 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 236 int flags, s; 237 238 switch (req) { 239 case ADAPTER_REQ_RUN_XFER: 240 xs = arg; 241 periph = xs->xs_periph; 242 flags = xs->xs_control; 243 244 /* XXXX ?? */ 245 if (flags & XS_CTL_DATA_UIO) 246 panic("siop: scsi data uio requested"); 247 248 /* XXXX ?? */ 249 if (sc->sc_nexus && flags & XS_CTL_POLL) 250 /* panic("siop_scsicmd: busy");*/ 251 printf("siop_scsicmd: busy\n"); 252 253 s = splbio(); 254 acb = sc->free_list.tqh_first; 255 if (acb) { 256 TAILQ_REMOVE(&sc->free_list, acb, chain); 257 } 258 splx(s); 259 260 #ifdef DIAGNOSTIC 261 /* 262 * This should never happen as we track the resources 263 * in the mid-layer. 264 */ 265 if (acb == NULL) { 266 scsipi_printaddr(periph); 267 printf("unable to allocate acb\n"); 268 panic("siop_scsipi_request"); 269 } 270 #endif 271 272 acb->flags = ACB_ACTIVE; 273 acb->xs = xs; 274 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 275 acb->clen = xs->cmdlen; 276 acb->daddr = xs->data; 277 acb->dleft = xs->datalen; 278 279 s = splbio(); 280 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 281 282 if (sc->sc_nexus == NULL) 283 siop_sched(sc); 284 285 splx(s); 286 287 if (flags & XS_CTL_POLL || siop_no_dma) 288 siop_poll(sc, acb); 289 return; 290 291 case ADAPTER_REQ_GROW_RESOURCES: 292 return; 293 294 case ADAPTER_REQ_SET_XFER_MODE: 295 return; 296 } 297 } 298 299 void 300 siop_poll(struct siop_softc *sc, struct siop_acb *acb) 301 { 302 siop_regmap_p rp = sc->sc_siopp; 303 struct scsipi_xfer *xs = acb->xs; 304 int i; 305 int status; 306 u_char istat; 307 u_char dstat; 308 u_char sstat0; 309 int s; 310 int to; 311 312 s = splbio(); 313 to = xs->timeout / 1000; 314 if (sc->nexus_list.tqh_first) 315 printf("%s: siop_poll called with disconnected device\n", 316 sc->sc_dev.dv_xname); 317 for (;;) { 318 /* use cmd_wait values? */ 319 i = 50000; 320 /* XXX spl0(); */ 321 while (((istat = rp->siop_istat) & 322 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 323 if (--i <= 0) { 324 #ifdef DEBUG 325 printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 326 xs->xs_periph->periph_target, acb->cmd.opcode, 327 rp->siop_sbcl, rp->siop_dsp, 328 rp->siop_dsp - sc->sc_scriptspa, 329 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 330 #endif 331 i = 50000; 332 --to; 333 if (to <= 0) { 334 siopreset(sc); 335 return; 336 } 337 } 338 delay(20); 339 } 340 sstat0 = rp->siop_sstat0; 341 dstat = rp->siop_dstat; 342 if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { 343 if (acb != sc->sc_nexus) 344 printf("%s: siop_poll disconnected device completed\n", 345 sc->sc_dev.dv_xname); 346 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 347 sc->sc_flags &= ~SIOP_INTSOFF; 348 rp->siop_sien = sc->sc_sien; 349 rp->siop_dien = sc->sc_dien; 350 } 351 siop_scsidone(sc->sc_nexus, status); 352 } 353 354 if (xs->xs_status & XS_STS_DONE) 355 break; 356 } 357 splx(s); 358 } 359 360 /* 361 * start next command that's ready 362 */ 363 void 364 siop_sched(struct siop_softc *sc) 365 { 366 struct scsipi_periph *periph; 367 struct siop_acb *acb; 368 int i; 369 370 #ifdef DEBUG 371 if (sc->sc_nexus) { 372 printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", 373 sc->sc_dev.dv_xname, sc->sc_nexus, 374 sc->sc_nexus->xs->xs_periph->periph_target, 375 sc->ready_list.tqh_first, 376 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 377 return; 378 } 379 #endif 380 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 381 periph = acb->xs->xs_periph; 382 i = periph->periph_target; 383 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 384 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 385 386 TAILQ_REMOVE(&sc->ready_list, acb, chain); 387 sc->sc_nexus = acb; 388 periph = acb->xs->xs_periph; 389 ti = &sc->sc_tinfo[periph->periph_target]; 390 ti->lubusy |= (1 << periph->periph_lun); 391 break; 392 } 393 } 394 395 if (acb == NULL) { 396 #ifdef DEBUGXXX 397 printf("%s: siop_sched didn't find ready command\n", 398 sc->sc_dev.dv_xname); 399 #endif 400 return; 401 } 402 403 if (acb->xs->xs_control & XS_CTL_RESET) 404 siopreset(sc); 405 406 #if 0 407 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 408 #endif 409 ++sc->sc_active; 410 siop_select(sc); 411 } 412 413 void 414 siop_scsidone(struct siop_acb *acb, int stat) 415 { 416 struct scsipi_xfer *xs; 417 struct scsipi_periph *periph; 418 struct siop_softc *sc; 419 int dosched = 0; 420 421 if (acb == NULL || (xs = acb->xs) == NULL) { 422 #ifdef DIAGNOSTIC 423 printf("siop_scsidone: NULL acb or scsipi_xfer\n"); 424 #if defined(DEBUG) && defined(DDB) 425 Debugger(); 426 #endif 427 #endif 428 return; 429 } 430 periph = xs->xs_periph; 431 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev; 432 433 xs->status = stat; 434 xs->resid = 0; /* XXXX */ 435 436 if (xs->error == XS_NOERROR) { 437 if (stat == SCSI_CHECK || stat == SCSI_BUSY) 438 xs->error = XS_BUSY; 439 } 440 441 /* 442 * Remove the ACB from whatever queue it's on. We have to do a bit of 443 * a hack to figure out which queue it's on. Note that it is *not* 444 * necessary to cdr down the ready queue, but we must cdr down the 445 * nexus queue and see if it's there, so we can mark the unit as no 446 * longer busy. This code is sickening, but it works. 447 */ 448 if (acb == sc->sc_nexus) { 449 sc->sc_nexus = NULL; 450 sc->sc_tinfo[periph->periph_target].lubusy &= 451 ~(1<<periph->periph_lun); 452 if (sc->ready_list.tqh_first) 453 dosched = 1; /* start next command */ 454 --sc->sc_active; 455 SIOP_TRACE('d','a',stat,0) 456 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 457 TAILQ_REMOVE(&sc->ready_list, acb, chain); 458 SIOP_TRACE('d','r',stat,0) 459 } else { 460 register struct siop_acb *acb2; 461 for (acb2 = sc->nexus_list.tqh_first; acb2; 462 acb2 = acb2->chain.tqe_next) 463 if (acb2 == acb) { 464 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 465 sc->sc_tinfo[periph->periph_target].lubusy 466 &= ~(1<<periph->periph_lun); 467 --sc->sc_active; 468 break; 469 } 470 if (acb2) 471 ; 472 else if (acb->chain.tqe_next) { 473 TAILQ_REMOVE(&sc->ready_list, acb, chain); 474 --sc->sc_active; 475 } else { 476 printf("%s: can't find matching acb\n", 477 sc->sc_dev.dv_xname); 478 #ifdef DDB 479 /* Debugger(); */ 480 #endif 481 } 482 SIOP_TRACE('d','n',stat,0); 483 } 484 /* Put it on the free list. */ 485 acb->flags = ACB_FREE; 486 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 487 488 sc->sc_tinfo[periph->periph_target].cmds++; 489 490 scsipi_done(xs); 491 492 if (dosched && sc->sc_nexus == NULL) 493 siop_sched(sc); 494 } 495 496 void 497 siopabort(register struct siop_softc *sc, siop_regmap_p rp, char *where) 498 { 499 #ifdef fix_this 500 int i; 501 #endif 502 503 printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 504 sc->sc_dev.dv_xname, 505 where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); 506 507 if (sc->sc_active > 0) { 508 #ifdef TODO 509 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 510 WAIT_CIP (rp); 511 512 GET_SBIC_asr (rp, asr); 513 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 514 { 515 /* ok, get more drastic.. */ 516 517 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 518 delay(25); 519 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 520 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 521 522 return; 523 } 524 525 do 526 { 527 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 528 GET_SBIC_csr (rp, csr); 529 } 530 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 531 && (csr != SBIC_CSR_CMD_INVALID)); 532 #endif 533 534 /* lets just hope it worked.. */ 535 #ifdef fix_this 536 for (i = 0; i < 2; ++i) { 537 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 538 sc->sc_cur) { 539 printf ("siopabort: cleanup!\n"); 540 sc->sc_iob[i].sc_xs = NULL; 541 } 542 } 543 #endif /* fix_this */ 544 /* sc->sc_active = 0; */ 545 } 546 } 547 548 void 549 siopinitialize(struct siop_softc *sc) 550 { 551 int i; 552 u_int inhibit_sync; 553 extern u_long scsi_nosync; 554 extern int shift_nosync; 555 556 /* 557 * Need to check that scripts is on a long word boundary 558 * Also should verify that dev doesn't span non-contiguous 559 * physical pages. 560 */ 561 sc->sc_scriptspa = kvtop((caddr_t)scripts); 562 563 /* 564 * malloc sc_acb to ensure that DS is on a long word boundary. 565 */ 566 567 MALLOC(sc->sc_acb, struct siop_acb *, 568 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 569 if (sc->sc_acb == NULL) 570 panic("siopinitialize: ACB malloc failed!"); 571 572 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 573 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 574 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 575 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 576 if (sc->sc_minsync < 25) 577 sc->sc_minsync = 25; 578 if (sc->sc_clock_freq <= 25) { 579 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 580 sc->sc_tcp[0] = sc->sc_tcp[1]; 581 } else if (sc->sc_clock_freq <= 37) { 582 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 583 sc->sc_tcp[0] = sc->sc_tcp[2]; 584 } else if (sc->sc_clock_freq <= 50) { 585 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 586 sc->sc_tcp[0] = sc->sc_tcp[3]; 587 } else { 588 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 589 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 590 } 591 592 if (scsi_nosync) { 593 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; 594 shift_nosync += 8; 595 #ifdef DEBUG 596 if (inhibit_sync) 597 printf("%s: Inhibiting synchronous transfer %02x\n", 598 sc->sc_dev.dv_xname, inhibit_sync); 599 #endif 600 for (i = 0; i < 8; ++i) 601 if (inhibit_sync & (1 << i)) 602 siop_inhibit_sync[i] = 1; 603 } 604 605 siopreset (sc); 606 } 607 608 void 609 siopreset(struct siop_softc *sc) 610 { 611 siop_regmap_p rp; 612 u_int i, s; 613 u_char dummy; 614 struct siop_acb *acb; 615 616 rp = sc->sc_siopp; 617 618 if (sc->sc_flags & SIOP_ALIVE) 619 siopabort(sc, rp, "reset"); 620 621 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 622 623 s = splbio(); 624 625 /* 626 * Reset the chip 627 * XXX - is this really needed? 628 */ 629 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 630 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 631 rp->siop_istat &= ~SIOP_ISTAT_RST; 632 /* 633 * Reset SCSI bus (do we really want this?) 634 */ 635 rp->siop_sien = 0; 636 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 637 delay(1); 638 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 639 640 /* 641 * Set up various chip parameters 642 */ 643 rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; 644 rp->siop_scntl1 = SIOP_SCNTL1_ESR; 645 rp->siop_dcntl = sc->sc_dcntl; 646 rp->siop_dmode = 0x80; /* burst length = 4 */ 647 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 648 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 649 rp->siop_scid = 1 << sc->sc_channel.chan_id; 650 rp->siop_dwt = 0x00; 651 rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; 652 rp->siop_ctest7 |= sc->sc_ctest7; 653 654 /* will need to re-negotiate sync xfers */ 655 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 656 657 i = rp->siop_istat; 658 if (i & SIOP_ISTAT_SIP) 659 dummy = rp->siop_sstat0; 660 if (i & SIOP_ISTAT_DIP) 661 dummy = rp->siop_dstat; 662 663 splx (s); 664 665 delay (siop_reset_delay * 1000); 666 printf("siop id %d reset V%d\n", sc->sc_channel.chan_id, 667 rp->siop_ctest8 >> 4); 668 669 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 670 TAILQ_INIT(&sc->ready_list); 671 TAILQ_INIT(&sc->nexus_list); 672 TAILQ_INIT(&sc->free_list); 673 sc->sc_nexus = NULL; 674 acb = sc->sc_acb; 675 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 676 for (i = 0; i < SIOP_NACB; i++) { 677 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 678 acb++; 679 } 680 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 681 } else { 682 if (sc->sc_nexus != NULL) { 683 sc->sc_nexus->xs->error = XS_RESET; 684 siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 685 } 686 while ((acb = sc->nexus_list.tqh_first) > 0) { 687 acb->xs->error = XS_RESET; 688 siop_scsidone(acb, acb->stat[0]); 689 } 690 } 691 692 sc->sc_flags |= SIOP_ALIVE; 693 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 694 /* enable SCSI and DMA interrupts */ 695 sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | 696 SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; 697 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 698 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 699 rp->siop_sien = sc->sc_sien; 700 rp->siop_dien = sc->sc_dien; 701 } 702 703 /* 704 * Setup Data Storage for 53C710 and start SCRIPTS processing 705 */ 706 707 void 708 siop_start(struct siop_softc *sc, int target, int lun, u_char *cbuf, int clen, 709 u_char *buf, int len) 710 { 711 siop_regmap_p rp = sc->sc_siopp; 712 int nchain; 713 int count, tcount; 714 char *addr, *dmaend; 715 struct siop_acb *acb = sc->sc_nexus; 716 #ifdef DEBUG 717 int i; 718 #endif 719 720 #ifdef DEBUG 721 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 722 printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\n", 723 rp, &scripts, &acb->ds, sc->sc_active); 724 printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 725 rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, 726 rp->siop_sien, rp->siop_dien); 727 #ifdef DDB 728 /*Debugger();*/ 729 #endif 730 } 731 #endif 732 acb->msgout[0] = MSG_IDENTIFY | lun; 733 if (siop_allow_disc[target] & 2 || 734 (siop_allow_disc[target] && len == 0)) 735 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 736 acb->status = 0; 737 acb->stat[0] = -1; 738 acb->msg[0] = -1; 739 acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); 740 acb->ds.idlen = 1; 741 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 742 acb->ds.cmdlen = clen; 743 acb->ds.cmdbuf = (char *) kvtop(cbuf); 744 acb->ds.stslen = 1; 745 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 746 acb->ds.msglen = 1; 747 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 748 acb->msg[1] = -1; 749 acb->ds.msginlen = 1; 750 acb->ds.extmsglen = 1; 751 acb->ds.synmsglen = 3; 752 acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); 753 acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); 754 acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); 755 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 756 757 /* 758 * Negotiate wide is the initial negotiation state; since the 53c710 759 * doesn't do wide transfers, just begin the synchronous transfer 760 * negotation here. 761 */ 762 if (sc->sc_sync[target].state == NEG_WIDE) { 763 if (siop_inhibit_sync[target]) { 764 sc->sc_sync[target].state = NEG_DONE; 765 sc->sc_sync[target].sbcl = 0; 766 sc->sc_sync[target].sxfer = 0; 767 #ifdef DEBUG 768 if (siopsync_debug) 769 printf ("Forcing target %d asynchronous\n", target); 770 #endif 771 } 772 else { 773 acb->msg[2] = -1; 774 acb->msgout[1] = MSG_EXT_MESSAGE; 775 acb->msgout[2] = 3; 776 acb->msgout[3] = MSG_SYNC_REQ; 777 #ifdef MAXTOR_SYNC_KLUDGE 778 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 779 #else 780 acb->msgout[4] = sc->sc_minsync; 781 #endif 782 acb->msgout[5] = SIOP_MAX_OFFSET; 783 acb->ds.idlen = 6; 784 sc->sc_sync[target].state = NEG_WAITS; 785 #ifdef DEBUG 786 if (siopsync_debug) 787 printf ("Sending sync request to target %d\n", target); 788 #endif 789 } 790 } 791 792 /* 793 * Build physical DMA addresses for scatter/gather I/O 794 */ 795 acb->iob_buf = buf; 796 acb->iob_len = len; 797 acb->iob_curbuf = acb->iob_curlen = 0; 798 nchain = 0; 799 count = len; 800 addr = buf; 801 dmaend = NULL; 802 while (count > 0) { 803 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 804 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET))) 805 tcount = count; 806 acb->ds.chain[nchain].datalen = tcount; 807 addr += tcount; 808 count -= tcount; 809 if (acb->ds.chain[nchain].databuf == dmaend) { 810 dmaend += acb->ds.chain[nchain].datalen; 811 acb->ds.chain[nchain].datalen = 0; 812 acb->ds.chain[--nchain].datalen += tcount; 813 #ifdef DEBUG 814 ++siopdma_hits; 815 #endif 816 } 817 else { 818 dmaend = acb->ds.chain[nchain].databuf + 819 acb->ds.chain[nchain].datalen; 820 acb->ds.chain[nchain].datalen = tcount; 821 #ifdef DEBUG 822 if (nchain) /* Don't count miss on first one */ 823 ++siopdma_misses; 824 #endif 825 } 826 ++nchain; 827 } 828 #ifdef DEBUG 829 if (nchain != 1 && len != 0 && siop_debug & 3) { 830 printf ("DMA chaining set: %d\n", nchain); 831 for (i = 0; i < nchain; ++i) { 832 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 833 acb->ds.chain[i].datalen); 834 } 835 } 836 #endif 837 838 /* push data cache for all data the 53c710 needs to access */ 839 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 840 dma_cachectl (cbuf, clen); 841 if (buf != NULL && len != 0) 842 dma_cachectl (buf, len); 843 #ifdef DEBUG 844 if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 845 printf ("ACK! siop was busy at start: rp %p script %p dsa %p active %ld\n", 846 rp, &scripts, &acb->ds, sc->sc_active); 847 #ifdef DDB 848 /*Debugger();*/ 849 #endif 850 } 851 #endif 852 if (sc->nexus_list.tqh_first == NULL) { 853 if (rp->siop_istat & SIOP_ISTAT_CON) 854 printf("%s: siop_select while connected?\n", 855 sc->sc_dev.dv_xname); 856 rp->siop_temp = 0; 857 rp->siop_sbcl = sc->sc_sync[target].sbcl; 858 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 859 rp->siop_dsp = sc->sc_scriptspa; 860 SIOP_TRACE('s',1,0,0) 861 } else { 862 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 863 rp->siop_istat = SIOP_ISTAT_SIGP; 864 SIOP_TRACE('s',2,0,0); 865 } 866 else { 867 SIOP_TRACE('s',3,rp->siop_istat,0); 868 } 869 } 870 #ifdef DEBUG 871 ++siopstarts; 872 #endif 873 } 874 875 /* 876 * Process a DMA or SCSI interrupt from the 53C710 SIOP 877 */ 878 879 int 880 siop_checkintr(struct siop_softc *sc, u_char istat, u_char dstat, 881 u_char sstat0, int *status) 882 { 883 siop_regmap_p rp = sc->sc_siopp; 884 struct siop_acb *acb = sc->sc_nexus; 885 int target = 0; 886 int dfifo, dbc, sstat1; 887 888 dfifo = rp->siop_dfifo; 889 dbc = rp->siop_dbc0; 890 sstat1 = rp->siop_sstat1; 891 rp->siop_ctest8 |= SIOP_CTEST8_CLF; 892 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 893 ; 894 rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; 895 #ifdef DEBUG 896 ++siopints; 897 #if 0 898 if (siop_debug & 0x100) { 899 DCIAS(&acb->stat[0]); /* XXX */ 900 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", 901 istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 902 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 903 acb->msg[0], acb->msg[1], acb->msg[2], 904 acb->msg[3], acb->msg[4], acb->msg[5]); 905 } 906 #endif 907 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 908 rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { 909 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 910 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 911 sc->sc_scriptspa + sizeof(scripts)); 912 printf(" istat %x dstat %x sstat0 %x\n", 913 istat, dstat, sstat0); 914 #ifdef DDB 915 Debugger(); 916 #endif 917 } 918 #endif 919 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); 920 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 921 /* Normal completion status, or check condition */ 922 #ifdef DEBUG 923 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 924 printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, 925 kvtop((caddr_t)&acb->ds)); 926 panic("*** siop DSA invalid ***"); 927 } 928 #endif 929 target = acb->xs->xs_periph->periph_target; 930 if (sc->sc_sync[target].state == NEG_WAITS) { 931 if (acb->msg[1] == 0xff) 932 printf ("%s: target %d ignored sync request\n", 933 sc->sc_dev.dv_xname, target); 934 else if (acb->msg[1] == MSG_REJECT) 935 printf ("%s: target %d rejected sync request\n", 936 sc->sc_dev.dv_xname, target); 937 else 938 /* XXX - need to set sync transfer parameters */ 939 printf("%s: target %d (sync) %02x %02x %02x\n", 940 sc->sc_dev.dv_xname, target, acb->msg[1], 941 acb->msg[2], acb->msg[3]); 942 sc->sc_sync[target].state = NEG_DONE; 943 } 944 dma_cachectl(&acb->stat[0], 1); 945 *status = acb->stat[0]; 946 #ifdef DEBUG 947 if (rp->siop_sbcl & SIOP_BSY) { 948 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 949 rp, &scripts, &acb->ds);*/ 950 #ifdef DDB 951 /*Debugger();*/ 952 #endif 953 } 954 if (acb->msg[0] != 0x00) 955 printf("%s: message was not COMMAND COMPLETE: %x\n", 956 sc->sc_dev.dv_xname, acb->msg[0]); 957 #endif 958 if (sc->nexus_list.tqh_first) 959 rp->siop_dcntl |= SIOP_DCNTL_STD; 960 return 1; 961 } 962 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 963 target = acb->xs->xs_periph->periph_target; 964 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 965 acb->msg[3] == MSG_SYNC_REQ) { 966 #ifdef DEBUG 967 if (siopsync_debug) 968 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 969 acb->msg[0], acb->msg[1], acb->msg[2], 970 acb->msg[3], acb->msg[4], acb->msg[5]); 971 #endif 972 sc->sc_sync[target].sxfer = 0; 973 sc->sc_sync[target].sbcl = 0; 974 if (acb->msg[2] == 3 && 975 acb->msg[3] == MSG_SYNC_REQ && 976 acb->msg[5] != 0) { 977 #ifdef MAXTOR_KLUDGE 978 /* 979 * Kludge for my Maxtor XT8580S 980 * It accepts whatever we request, even 981 * though it won't work. So we ask for 982 * a short period than we can handle. If 983 * the device says it can do it, use 208ns. 984 * If the device says it can do less than 985 * 100ns, then we limit it to 100ns. 986 */ 987 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 988 #ifdef DEBUG 989 printf ("%d: target %d wanted %dns period\n", 990 sc->sc_dev.dv_xname, target, 991 acb->msg[4] * 4); 992 #endif 993 if (acb->msg[4] == 50 / 4) 994 acb->msg[4] = 208 / 4; 995 else 996 acb->msg[4] = 100 / 4; 997 } 998 #endif /* MAXTOR_KLUDGE */ 999 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1000 sc->sc_dev.dv_xname, target, 1001 acb->msg[4] * 4, acb->msg[5]); 1002 scsi_period_to_siop (sc, target); 1003 } 1004 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1005 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1006 if (sc->sc_sync[target].state == NEG_WAITS) { 1007 sc->sc_sync[target].state = NEG_DONE; 1008 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1009 return(0); 1010 } 1011 rp->siop_dcntl |= SIOP_DCNTL_STD; 1012 sc->sc_sync[target].state = NEG_DONE; 1013 return (0); 1014 } 1015 /* XXX - not SDTR message */ 1016 } 1017 if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ 1018 #ifdef DEBUG 1019 ++siopphmm; 1020 if (acb == NULL) 1021 printf("%s: Phase mismatch with no active command?\n", 1022 sc->sc_dev.dv_xname); 1023 #endif 1024 if (acb->iob_len) { 1025 int adjust; 1026 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1027 if (sstat1 & SIOP_SSTAT1_ORF) 1028 ++adjust; 1029 if (sstat1 & SIOP_SSTAT1_OLF) 1030 ++adjust; 1031 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1032 acb->iob_curlen += adjust; 1033 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1034 #ifdef DEBUG 1035 if (siop_debug & 0x100) { 1036 int i; 1037 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1038 acb->iob_curbuf, acb->iob_curlen, dfifo, 1039 dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); 1040 if (acb->ds.chain[1].datalen) { 1041 for (i = 0; acb->ds.chain[i].datalen; ++i) 1042 printf("chain[%d] addr %p len %lx\n", 1043 i, acb->ds.chain[i].databuf, 1044 acb->ds.chain[i].datalen); 1045 } 1046 } 1047 #endif 1048 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1049 } 1050 #ifdef DEBUG 1051 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1052 if (siop_debug & 9) 1053 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1054 rp->siop_sbcl, 1055 rp->siop_dsp - sc->sc_scriptspa, 1056 *((long *)&rp->siop_dcmd)); 1057 #endif 1058 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1059 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1060 rp->siop_sbcl, rp->siop_dsp); 1061 #if defined(DEBUG) && defined(DDB) 1062 /*Debugger(); XXX is*/ 1063 #endif 1064 } 1065 switch (rp->siop_sbcl & 7) { 1066 case 0: /* data out */ 1067 case 1: /* data in */ 1068 case 2: /* status */ 1069 case 3: /* command */ 1070 case 6: /* message in */ 1071 case 7: /* message out */ 1072 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1073 break; 1074 default: 1075 goto bad_phase; 1076 } 1077 return 0; 1078 } 1079 if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ 1080 #ifdef DEBUG 1081 if (acb == NULL) 1082 printf("%s: Select timeout with no active command?\n", 1083 sc->sc_dev.dv_xname); 1084 if (rp->siop_sbcl & SIOP_BSY) { 1085 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1086 rp, &scripts, &acb->ds); 1087 printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", 1088 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); 1089 if (!(rp->siop_sbcl & SIOP_BSY)) { 1090 printf ("Yikes, it's not busy now!\n"); 1091 #if 0 1092 *status = -1; 1093 if (sc->nexus_list.tqh_first) 1094 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1095 return 1; 1096 #endif 1097 } 1098 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1099 return (0); 1100 #ifdef DDB 1101 Debugger(); 1102 #endif 1103 } 1104 #endif 1105 *status = -1; 1106 acb->xs->error = XS_SELTIMEOUT; 1107 if (sc->nexus_list.tqh_first) 1108 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1109 return 1; 1110 } 1111 if (acb) 1112 target = acb->xs->xs_periph->periph_target; 1113 else 1114 target = 7; 1115 if (sstat0 & SIOP_SSTAT0_UDC) { 1116 #ifdef DEBUG 1117 if (acb == NULL) 1118 printf("%s: Unexpected disconnect with no active command?\n", 1119 sc->sc_dev.dv_xname); 1120 printf ("%s: target %d disconnected unexpectedly\n", 1121 sc->sc_dev.dv_xname, target); 1122 #endif 1123 #if 0 1124 siopabort (sc, rp, "siopchkintr"); 1125 #endif 1126 *status = STS_BUSY; 1127 if (sc->nexus_list.tqh_first) 1128 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1129 return (acb != NULL); 1130 } 1131 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1132 rp->siop_dsps == 0xff02)) { 1133 #ifdef DEBUG 1134 if (siop_debug & 0x100) 1135 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", 1136 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1137 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1138 acb->iob_curbuf, acb->iob_curlen, 1139 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); 1140 #endif 1141 if (acb == NULL) { 1142 printf("%s: Disconnect with no active command?\n", 1143 sc->sc_dev.dv_xname); 1144 return (0); 1145 } 1146 /* 1147 * XXXX need to update iob_curbuf/iob_curlen to reflect 1148 * current data transferred. If device disconnected in 1149 * the middle of a DMA block, they should already be set 1150 * by the phase change interrupt. If the disconnect 1151 * occurs on a DMA block boundary, we have to figure out 1152 * which DMA block it was. 1153 */ 1154 if (acb->iob_len && rp->siop_temp) { 1155 int n = rp->siop_temp - sc->sc_scriptspa; 1156 1157 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1158 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1159 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1160 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1161 if (n < Ent_datain) 1162 n = (n - Ent_dataout) / 16; 1163 else 1164 n = (n - Ent_datain) / 16; 1165 if (n <= 0 && n > DMAMAXIO) 1166 printf("TEMP invalid %d\n", n); 1167 else { 1168 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1169 acb->iob_curlen = acb->ds.chain[n].datalen; 1170 } 1171 #ifdef DEBUG 1172 if (siop_debug & 0x100) { 1173 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1174 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1175 acb->iob_curlen); 1176 } 1177 #endif 1178 } 1179 /* 1180 * If data transfer was interrupted by disconnect, iob_curbuf 1181 * and iob_curlen should reflect the point of interruption. 1182 * Adjust the DMA chain so that the data transfer begins 1183 * at the appropriate place upon reselection. 1184 * XXX This should only be done on save data pointer message? 1185 */ 1186 if (acb->iob_curlen) { 1187 int i, j; 1188 1189 #ifdef DEBUG 1190 if (siop_debug & 0x100) 1191 printf ("%s: adjusting DMA chain\n", 1192 sc->sc_dev.dv_xname); 1193 if (rp->siop_dsps == 0xff02) 1194 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1195 sc->sc_dev.dv_xname, 1 << target); 1196 #endif 1197 /* XXX is: if (rp->siop_dsps != 0xff02) { */ 1198 /* not disconnected without save data ptr */ 1199 for (i = 0; i < DMAMAXIO; ++i) { 1200 if (acb->ds.chain[i].datalen == 0) 1201 break; 1202 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1203 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1204 acb->ds.chain[i].datalen)) 1205 break; 1206 } 1207 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1208 printf("couldn't find saved data pointer: "); 1209 printf("curbuf %lx curlen %lx i %d\n", 1210 acb->iob_curbuf, acb->iob_curlen, i); 1211 #ifdef DDB 1212 Debugger(); 1213 #endif 1214 } 1215 /* XXX is: } */ 1216 #ifdef DEBUG 1217 if (siop_debug & 0x100) 1218 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1219 acb->ds.chain[0].databuf, 1220 acb->ds.chain[0].datalen, 1221 acb->iob_curbuf, 1222 acb->iob_curlen); 1223 #endif 1224 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1225 acb->ds.chain[0].datalen = acb->iob_curlen; 1226 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1227 #ifdef DEBUG 1228 if (siop_debug & 0x100) 1229 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1230 acb->ds.chain[j].databuf, 1231 acb->ds.chain[j].datalen, 1232 acb->ds.chain[i].databuf, 1233 acb->ds.chain[i].datalen); 1234 #endif 1235 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1236 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1237 } 1238 if (j < DMAMAXIO) 1239 acb->ds.chain[j].datalen = 0; 1240 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1241 } 1242 ++sc->sc_tinfo[target].dconns; 1243 /* 1244 * add nexus to waiting list 1245 * clear nexus 1246 * try to start another command for another target/lun 1247 */ 1248 acb->status = sc->sc_flags & SIOP_INTSOFF; 1249 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1250 sc->sc_nexus = NULL; /* no current device */ 1251 /* start script to wait for reselect */ 1252 if (sc->sc_nexus == NULL) 1253 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1254 /* XXXX start another command ? */ 1255 if (sc->ready_list.tqh_first) 1256 siop_sched(sc); 1257 return (0); 1258 } 1259 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1260 int reselid = rp->siop_scratch & 0x7f; 1261 int reselun = rp->siop_sfbr & 0x07; 1262 1263 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1264 #ifdef DEBUG 1265 if (siop_debug & 0x100) 1266 printf ("%s: target ID %02x reselected dsps %lx\n", 1267 sc->sc_dev.dv_xname, reselid, 1268 rp->siop_dsps); 1269 if ((rp->siop_sfbr & 0x80) == 0) 1270 printf("%s: Reselect message in was not identify: %x\n", 1271 sc->sc_dev.dv_xname, rp->siop_sfbr); 1272 #endif 1273 if (sc->sc_nexus) { 1274 #ifdef DEBUG 1275 if (siop_debug & 0x100) 1276 printf ("%s: reselect ID %02x w/active\n", 1277 sc->sc_dev.dv_xname, reselid); 1278 #endif 1279 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1280 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1281 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1282 --sc->sc_active; 1283 } 1284 /* 1285 * locate acb of reselecting device 1286 * set sc->sc_nexus to acb 1287 */ 1288 for (acb = sc->nexus_list.tqh_first; acb; 1289 acb = acb->chain.tqe_next) { 1290 if (reselid != (acb->ds.scsi_addr >> 16) || 1291 reselun != (acb->msgout[0] & 0x07)) 1292 continue; 1293 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1294 sc->sc_nexus = acb; 1295 sc->sc_flags |= acb->status; 1296 acb->status = 0; 1297 DCIAS(kvtop(&acb->stat[0])); 1298 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1299 rp->siop_sxfer = 1300 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1301 rp->siop_sbcl = 1302 sc->sc_sync[acb->xs->xs_periph->periph_target].sbcl; 1303 break; 1304 } 1305 if (acb == NULL) { 1306 printf("%s: target ID %02x reselect nexus_list %p\n", 1307 sc->sc_dev.dv_xname, reselid, 1308 sc->nexus_list.tqh_first); 1309 panic("unable to find reselecting device"); 1310 } 1311 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1312 rp->siop_temp = 0; 1313 rp->siop_dcntl |= SIOP_DCNTL_STD; 1314 return (0); 1315 } 1316 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1317 #ifdef DEBUG 1318 u_short ctest2 = rp->siop_ctest2; 1319 1320 /* reselect was interrupted (by Sig_P or select) */ 1321 if (siop_debug & 0x100 || 1322 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1323 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1324 sc->sc_dev.dv_xname, rp->siop_scntl1, 1325 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1326 #endif 1327 /* XXX assumes it was not select */ 1328 if (sc->sc_nexus == NULL) { 1329 #ifdef DEBUG 1330 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1331 sc->sc_dev.dv_xname); 1332 #if 0 1333 siop_dump(sc); 1334 #ifdef DDB 1335 Debugger(); 1336 #endif 1337 #endif 1338 #endif 1339 rp->siop_dcntl |= SIOP_DCNTL_STD; 1340 return(0); 1341 } 1342 target = sc->sc_nexus->xs->xs_periph->periph_target; 1343 rp->siop_temp = 0; 1344 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1345 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1346 rp->siop_sbcl = sc->sc_sync[target].sbcl; 1347 rp->siop_dsp = sc->sc_scriptspa; 1348 return (0); 1349 } 1350 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1351 if (acb == NULL) 1352 printf("%s: Bad message-in with no active command?\n", 1353 sc->sc_dev.dv_xname); 1354 /* Unrecognized message in byte */ 1355 dma_cachectl (&acb->msg[1],1); 1356 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1357 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1358 /* what should be done here? */ 1359 DCIAS(kvtop(&acb->msg[1])); 1360 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1361 return (0); 1362 } 1363 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1364 /* Status phase wasn't followed by message in phase? */ 1365 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1366 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1367 if (rp->siop_sbcl == 0xa7) { 1368 /* It is now, just continue the script? */ 1369 rp->siop_dcntl |= SIOP_DCNTL_STD; 1370 return (0); 1371 } 1372 } 1373 if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { 1374 dma_cachectl (&acb->stat[0], 1); 1375 dma_cachectl (&acb->msg[0], 1); 1376 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1377 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1378 rp->siop_sbcl); 1379 siopreset (sc); 1380 *status = -1; 1381 return 0; /* siopreset has cleaned up */ 1382 } 1383 if (sstat0 & SIOP_SSTAT0_SGE) 1384 printf ("SIOP: SCSI Gross Error\n"); 1385 if (sstat0 & SIOP_SSTAT0_PAR) 1386 printf ("SIOP: Parity Error\n"); 1387 if (dstat & SIOP_DSTAT_IID) 1388 printf ("SIOP: Invalid instruction detected\n"); 1389 bad_phase: 1390 /* 1391 * temporary panic for unhandled conditions 1392 * displays various things about the 53C710 status and registers 1393 * then panics. 1394 * XXXX need to clean this up to print out the info, reset, and continue 1395 */ 1396 printf ("siopchkintr: target %x ds %p\n", target, &acb->ds); 1397 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1398 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1399 *((long *)&rp->siop_dcmd)); 1400 printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1401 istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, 1402 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1403 #ifdef DEBUG 1404 if (siop_debug & 0x20) 1405 panic("siopchkintr: **** temp ****"); 1406 #endif 1407 #ifdef DDB 1408 Debugger (); 1409 #endif 1410 siopreset (sc); /* hard reset */ 1411 *status = -1; 1412 return 0; /* siopreset cleaned up */ 1413 } 1414 1415 void 1416 siop_select(struct siop_softc *sc) 1417 { 1418 siop_regmap_p rp; 1419 struct siop_acb *acb = sc->sc_nexus; 1420 1421 #ifdef DEBUG 1422 if (siop_debug & 1) 1423 printf ("%s: select ", sc->sc_dev.dv_xname); 1424 #endif 1425 1426 rp = sc->sc_siopp; 1427 if (acb->xs->xs_control & XS_CTL_POLL || siop_no_dma) { 1428 sc->sc_flags |= SIOP_INTSOFF; 1429 sc->sc_flags &= ~SIOP_INTDEFER; 1430 if ((rp->siop_istat & 0x08) == 0) { 1431 rp->siop_sien = 0; 1432 rp->siop_dien = 0; 1433 } 1434 #if 0 1435 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1436 sc->sc_flags &= ~SIOP_INTSOFF; 1437 if ((rp->siop_istat & 0x08) == 0) { 1438 rp->siop_sien = sc->sc_sien; 1439 rp->siop_dien = sc->sc_dien; 1440 } 1441 #endif 1442 } 1443 #ifdef DEBUG 1444 if (siop_debug & 1) 1445 printf ("siop_select: target %x cmd %02x ds %p\n", 1446 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1447 &sc->sc_nexus->ds); 1448 #endif 1449 1450 siop_start(sc, acb->xs->xs_periph->periph_target, 1451 acb->xs->xs_periph->periph_lun, 1452 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1453 1454 return; 1455 } 1456 1457 /* 1458 * 53C710 interrupt handler 1459 */ 1460 1461 void 1462 siopintr(register struct siop_softc *sc) 1463 { 1464 siop_regmap_p rp; 1465 register u_char istat, dstat, sstat0; 1466 int status; 1467 int s = splbio(); 1468 1469 istat = sc->sc_istat; 1470 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1471 splx(s); 1472 return; 1473 } 1474 1475 /* Got a valid interrupt on this device */ 1476 rp = sc->sc_siopp; 1477 dstat = sc->sc_dstat; 1478 sstat0 = sc->sc_sstat0; 1479 if (dstat & SIOP_DSTAT_SIR) 1480 sc->sc_intcode = rp->siop_dsps; 1481 sc->sc_istat = 0; 1482 #ifdef DEBUG 1483 if (siop_debug & 1) 1484 printf ("%s: intr istat %x dstat %x sstat0 %x\n", 1485 sc->sc_dev.dv_xname, istat, dstat, sstat0); 1486 if (!sc->sc_active) { 1487 printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", 1488 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1489 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1490 } 1491 #endif 1492 1493 #ifdef DEBUG 1494 if (siop_debug & 5) { 1495 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1496 printf ("%s: intr istat %x dstat %x sstat0 %x dsps %lx sbcl %x sts %x msg %x\n", 1497 sc->sc_dev.dv_xname, istat, dstat, sstat0, 1498 rp->siop_dsps, rp->siop_sbcl, 1499 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1500 } 1501 #endif 1502 if (sc->sc_flags & SIOP_INTDEFER) { 1503 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1504 rp->siop_sien = sc->sc_sien; 1505 rp->siop_dien = sc->sc_dien; 1506 } 1507 if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { 1508 #if 1 1509 if (status == 0xff) 1510 printf ("siopintr: status == 0xff\n"); 1511 #endif 1512 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1513 #if 0 1514 if (rp->siop_sbcl & SIOP_BSY) { 1515 printf ("%s: SCSI bus busy at completion", 1516 sc->sc_dev.dv_xname); 1517 printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", 1518 sc->sc_nexus->xs->xs_periph->periph_target, 1519 rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, 1520 rp->siop_dsp - sc->sc_scriptspa); 1521 } 1522 #endif 1523 siop_scsidone(sc->sc_nexus, sc->sc_nexus ? 1524 sc->sc_nexus->stat[0] : -1); 1525 } 1526 } 1527 splx(s); 1528 } 1529 1530 /* 1531 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1532 * not be correct for other 53c710 boards. 1533 * 1534 */ 1535 void 1536 scsi_period_to_siop(struct siop_softc *sc, int target) 1537 { 1538 int period, offset, sxfer, sbcl = 0; 1539 #ifdef DEBUG_SYNC 1540 int i; 1541 #endif 1542 1543 period = sc->sc_nexus->msg[4]; 1544 offset = sc->sc_nexus->msg[5]; 1545 #ifdef DEBUG_SYNC 1546 sxfer = 0; 1547 if (offset <= SIOP_MAX_OFFSET) 1548 sxfer = offset; 1549 for (i = 0; i < sizeof (sync_tab) / 2; ++i) { 1550 if (period <= sync_tab[i].p) { 1551 sxfer |= sync_tab[i].r & 0x70; 1552 sbcl = sync_tab[i].r & 0x03; 1553 break; 1554 } 1555 } 1556 printf ("siop sync old: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1557 #endif 1558 for (sbcl = 1; sbcl < 4; ++sbcl) { 1559 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1560 if (sxfer >= 0 && sxfer <= 7) 1561 break; 1562 } 1563 if (sbcl > 3) { 1564 printf("siop sync: unable to compute sync params for period %dns\n", 1565 period * 4); 1566 /* 1567 * XXX need to pick a value we can do and renegotiate 1568 */ 1569 sxfer = sbcl = 0; 1570 } else { 1571 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1572 offset : SIOP_MAX_OFFSET); 1573 #ifdef DEBUG_SYNC 1574 printf("siop sync: params for period %dns: sxfer %x sbcl %x", 1575 period * 4, sxfer, sbcl); 1576 printf(" actual period %dns\n", 1577 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1578 #endif 1579 } 1580 sc->sc_sync[target].sxfer = sxfer; 1581 sc->sc_sync[target].sbcl = sbcl; 1582 #ifdef DEBUG_SYNC 1583 printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); 1584 #endif 1585 } 1586 1587 #ifdef DEBUG 1588 1589 #if SIOP_TRACE_SIZE 1590 void 1591 siop_dump_trace(void) 1592 { 1593 int i; 1594 1595 printf("siop trace: next index %d\n", siop_trix); 1596 i = siop_trix; 1597 do { 1598 printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], 1599 siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); 1600 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1601 } while (i != siop_trix); 1602 } 1603 #endif 1604 1605 void 1606 siop_dump_acb(struct siop_acb *acb) 1607 { 1608 u_char *b = (u_char *) &acb->cmd; 1609 int i; 1610 1611 printf("acb@%p ", acb); 1612 if (acb->xs == NULL) { 1613 printf("<unused>\n"); 1614 return; 1615 } 1616 printf("(%d:%d) flags %2x clen %2d cmd ", 1617 acb->xs->xs_periph->periph_target, 1618 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1619 for (i = acb->clen; i; --i) 1620 printf(" %02x", *b++); 1621 printf("\n"); 1622 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1623 acb->xs->datalen); 1624 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1625 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1626 } 1627 1628 void 1629 siop_dump(struct siop_softc *sc) 1630 { 1631 struct siop_acb *acb; 1632 siop_regmap_p rp = sc->sc_siopp; 1633 int s; 1634 int i; 1635 1636 s = splbio(); 1637 #if SIOP_TRACE_SIZE 1638 siop_dump_trace(); 1639 #endif 1640 printf("%s@%p regs %p istat %x\n", 1641 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1642 if ((acb = sc->free_list.tqh_first) > 0) { 1643 printf("Free list:\n"); 1644 while (acb) { 1645 siop_dump_acb(acb); 1646 acb = acb->chain.tqe_next; 1647 } 1648 } 1649 if ((acb = sc->ready_list.tqh_first) > 0) { 1650 printf("Ready list:\n"); 1651 while (acb) { 1652 siop_dump_acb(acb); 1653 acb = acb->chain.tqe_next; 1654 } 1655 } 1656 if ((acb = sc->nexus_list.tqh_first) > 0) { 1657 printf("Nexus list:\n"); 1658 while (acb) { 1659 siop_dump_acb(acb); 1660 acb = acb->chain.tqe_next; 1661 } 1662 } 1663 if (sc->sc_nexus) { 1664 printf("Nexus:\n"); 1665 siop_dump_acb(sc->sc_nexus); 1666 } 1667 for (i = 0; i < 8; ++i) { 1668 if (sc->sc_tinfo[i].cmds > 2) { 1669 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1670 i, sc->sc_tinfo[i].cmds, 1671 sc->sc_tinfo[i].dconns, 1672 sc->sc_tinfo[i].lubusy); 1673 } 1674 } 1675 splx(s); 1676 } 1677 #endif 1678
Indexes created Fri Sep 26 08:10:20 GMT 2025