sci.c revision 1.11
1 /* $NetBSD: sci.c,v 1.11 1995/02/12 19:19:23 chopps Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Van Jacobson of Lawrence Berkeley Laboratory. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)scsi.c 7.5 (Berkeley) 5/4/91 40 */ 41 42 /* 43 * AMIGA NCR 5380 scsi adaptor driver 44 */ 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/device.h> 49 #include <sys/disklabel.h> 50 #include <sys/dkstat.h> 51 #include <sys/buf.h> 52 #include <scsi/scsi_all.h> 53 #include <scsi/scsiconf.h> 54 #include <vm/vm.h> 55 #include <vm/vm_kern.h> 56 #include <vm/vm_page.h> 57 #include <machine/pmap.h> 58 #include <machine/cpu.h> 59 #include <amiga/amiga/device.h> 60 #include <amiga/amiga/custom.h> 61 #include <amiga/amiga/isr.h> 62 #include <amiga/dev/scireg.h> 63 #include <amiga/dev/scivar.h> 64 65 /* 66 * SCSI delays 67 * In u-seconds, primarily for state changes on the SPC. 68 */ 69 #define SCI_CMD_WAIT 50000 /* wait per step of 'immediate' cmds */ 70 #define SCI_DATA_WAIT 50000 /* wait per data in/out step */ 71 #define SCI_INIT_WAIT 50000 /* wait per step (both) during init */ 72 73 #define b_cylin b_resid 74 75 int sciicmd __P((struct sci_softc *, int, void *, int, void *, int,u_char)); 76 int scigo __P((struct sci_softc *, struct scsi_xfer *)); 77 int scigetsense __P((struct sci_softc *, struct scsi_xfer *)); 78 int sciselectbus __P((struct sci_softc *, u_char, u_char)); 79 void sciabort __P((struct sci_softc *, char *)); 80 void scierror __P((struct sci_softc *, u_char)); 81 void scireset __P((struct sci_softc *)); 82 void scisetdelay __P((int)); 83 void sci_scsidone __P((struct sci_softc *, int)); 84 void sci_donextcmd __P((struct sci_softc *)); 85 86 int sci_cmd_wait = SCI_CMD_WAIT; 87 int sci_data_wait = SCI_DATA_WAIT; 88 int sci_init_wait = SCI_INIT_WAIT; 89 90 int sci_no_dma = 0; 91 92 #ifdef DEBUG 93 #define QPRINTF(a) if (sci_debug > 1) printf a 94 int sci_debug = 0; 95 #else 96 #define QPRINTF 97 #endif 98 99 /* 100 * default minphys routine for sci based controllers 101 */ 102 void 103 sci_minphys(bp) 104 struct buf *bp; 105 { 106 /* 107 * no max transfer at this level 108 */ 109 } 110 111 /* 112 * used by specific sci controller 113 * 114 * it appears that the higher level code does nothing with LUN's 115 * so I will too. I could plug it in, however so could they 116 * in scsi_scsi_cmd(). 117 */ 118 int 119 sci_scsicmd(xs) 120 struct scsi_xfer *xs; 121 { 122 struct sci_pending *pendp; 123 struct sci_softc *dev; 124 struct scsi_link *slp; 125 int flags, s; 126 127 slp = xs->sc_link; 128 dev = slp->adapter_softc; 129 flags = xs->flags; 130 131 if (flags & SCSI_DATA_UIO) 132 panic("sci: scsi data uio requested"); 133 134 if (dev->sc_xs && flags & SCSI_POLL) 135 panic("sci_scsicmd: busy"); 136 137 s = splbio(); 138 pendp = &dev->sc_xsstore[slp->target][slp->lun]; 139 if (pendp->xs) { 140 splx(s); 141 return(TRY_AGAIN_LATER); 142 } 143 144 if (dev->sc_xs) { 145 pendp->xs = xs; 146 TAILQ_INSERT_TAIL(&dev->sc_xslist, pendp, link); 147 splx(s); 148 return(SUCCESSFULLY_QUEUED); 149 } 150 pendp->xs = NULL; 151 dev->sc_xs = xs; 152 splx(s); 153 154 /* 155 * nothing is pending do it now. 156 */ 157 sci_donextcmd(dev); 158 159 if (flags & SCSI_POLL) 160 return(COMPLETE); 161 return(SUCCESSFULLY_QUEUED); 162 } 163 164 /* 165 * entered with dev->sc_xs pointing to the next xfer to perform 166 */ 167 void 168 sci_donextcmd(dev) 169 struct sci_softc *dev; 170 { 171 struct scsi_xfer *xs; 172 struct scsi_link *slp; 173 int flags, phase, stat; 174 175 xs = dev->sc_xs; 176 slp = xs->sc_link; 177 flags = xs->flags; 178 179 if (flags & SCSI_DATA_IN) 180 phase = DATA_IN_PHASE; 181 else if (flags & SCSI_DATA_OUT) 182 phase = DATA_OUT_PHASE; 183 else 184 phase = STATUS_PHASE; 185 186 if (flags & SCSI_RESET) 187 scireset(dev); 188 189 dev->sc_stat[0] = -1; 190 xs->cmd->bytes[0] |= slp->lun << 5; 191 if (phase == STATUS_PHASE || flags & SCSI_POLL) 192 stat = sciicmd(dev, slp->target, xs->cmd, xs->cmdlen, 193 xs->data, xs->datalen, phase); 194 else if (scigo(dev, xs) == 0) 195 return; 196 else 197 stat = dev->sc_stat[0]; 198 199 sci_scsidone(dev, stat); 200 } 201 202 void 203 sci_scsidone(dev, stat) 204 struct sci_softc *dev; 205 int stat; 206 { 207 struct sci_pending *pendp; 208 struct scsi_xfer *xs; 209 int s, donext; 210 211 xs = dev->sc_xs; 212 #ifdef DIAGNOSTIC 213 if (xs == NULL) 214 panic("sci_scsidone"); 215 #endif 216 #if 1 217 if (((struct device *)(xs->sc_link->device_softc))->dv_unit < dk_ndrive) 218 ++dk_xfer[((struct device *)(xs->sc_link->device_softc))->dv_unit]; 219 #endif 220 /* 221 * is this right? 222 */ 223 xs->status = stat; 224 225 if (stat == 0) 226 xs->resid = 0; 227 else { 228 switch(stat) { 229 case SCSI_CHECK: 230 if (stat = scigetsense(dev, xs)) 231 goto bad_sense; 232 xs->error = XS_SENSE; 233 break; 234 case SCSI_BUSY: 235 xs->error = XS_BUSY; 236 break; 237 bad_sense: 238 default: 239 xs->error = XS_DRIVER_STUFFUP; 240 QPRINTF(("sci_scsicmd() bad %x\n", stat)); 241 break; 242 } 243 } 244 xs->flags |= ITSDONE; 245 246 /* 247 * grab next command before scsi_done() 248 * this way no single device can hog scsi resources. 249 */ 250 s = splbio(); 251 pendp = dev->sc_xslist.tqh_first; 252 if (pendp == NULL) { 253 donext = 0; 254 dev->sc_xs = NULL; 255 } else { 256 donext = 1; 257 TAILQ_REMOVE(&dev->sc_xslist, pendp, link); 258 dev->sc_xs = pendp->xs; 259 pendp->xs = NULL; 260 } 261 splx(s); 262 scsi_done(xs); 263 264 if (donext) 265 sci_donextcmd(dev); 266 } 267 268 int 269 scigetsense(dev, xs) 270 struct sci_softc *dev; 271 struct scsi_xfer *xs; 272 { 273 struct scsi_sense rqs; 274 struct scsi_link *slp; 275 int stat; 276 277 slp = xs->sc_link; 278 279 rqs.opcode = REQUEST_SENSE; 280 rqs.byte2 = slp->lun << 5; 281 #ifdef not_yet 282 rqs.length = xs->req_sense_length ? xs->req_sense_length : 283 sizeof(xs->sense); 284 #else 285 rqs.length = sizeof(xs->sense); 286 #endif 287 288 rqs.unused[0] = rqs.unused[1] = rqs.control = 0; 289 290 return(sciicmd(dev, slp->target, &rqs, sizeof(rqs), &xs->sense, 291 rqs.length, DATA_IN_PHASE)); 292 } 293 294 void 295 sciabort(dev, where) 296 struct sci_softc *dev; 297 char *where; 298 { 299 printf ("%s: abort %s: csr = 0x%02x, bus = 0x%02x\n", 300 dev->sc_dev.dv_xname, where, *dev->sci_csr, *dev->sci_bus_csr); 301 302 if (dev->sc_flags & SCI_SELECTED) { 303 304 /* lets just hope it worked.. */ 305 dev->sc_flags &= ~SCI_SELECTED; 306 /* XXX */ 307 scireset (dev); 308 } 309 } 310 311 /* 312 * XXX Set/reset long delays. 313 * 314 * if delay == 0, reset default delays 315 * if delay < 0, set both delays to default long initialization values 316 * if delay > 0, set both delays to this value 317 * 318 * Used when a devices is expected to respond slowly (e.g. during 319 * initialization). 320 */ 321 void 322 scisetdelay(del) 323 int del; 324 { 325 static int saved_cmd_wait, saved_data_wait; 326 327 if (del) { 328 saved_cmd_wait = sci_cmd_wait; 329 saved_data_wait = sci_data_wait; 330 if (del > 0) 331 sci_cmd_wait = sci_data_wait = del; 332 else 333 sci_cmd_wait = sci_data_wait = sci_init_wait; 334 } else { 335 sci_cmd_wait = saved_cmd_wait; 336 sci_data_wait = saved_data_wait; 337 } 338 } 339 340 void 341 scireset(dev) 342 struct sci_softc *dev; 343 { 344 u_int i, s; 345 u_char my_id, csr; 346 347 dev->sc_flags &= ~SCI_SELECTED; 348 if (dev->sc_flags & SCI_ALIVE) 349 sciabort(dev, "reset"); 350 351 printf("%s: ", dev->sc_dev.dv_xname); 352 353 s = splbio(); 354 /* preserve our ID for now */ 355 my_id = 7; 356 357 /* 358 * Reset the chip 359 */ 360 *dev->sci_icmd = SCI_ICMD_TEST; 361 *dev->sci_icmd = SCI_ICMD_TEST | SCI_ICMD_RST; 362 delay (25); 363 *dev->sci_icmd = 0; 364 365 /* 366 * Set up various chip parameters 367 */ 368 *dev->sci_icmd = 0; 369 *dev->sci_tcmd = 0; 370 *dev->sci_sel_enb = 0; 371 372 /* anything else was zeroed by reset */ 373 374 splx (s); 375 376 printf("sci id %d\n", my_id); 377 dev->sc_flags |= SCI_ALIVE; 378 } 379 380 void 381 scierror(dev, csr) 382 struct sci_softc *dev; 383 u_char csr; 384 { 385 struct scsi_xfer *xs; 386 387 xs = dev->sc_xs; 388 389 #ifdef DIAGNOSTIC 390 if (xs == NULL) 391 panic("scierror"); 392 #endif 393 if (xs->flags & SCSI_SILENT) 394 return; 395 396 printf("%s: ", dev->sc_dev.dv_xname); 397 printf("csr == 0x%02i\n", csr); /* XXX */ 398 } 399 400 /* 401 * select the bus, return when selected or error. 402 */ 403 int 404 sciselectbus(dev, target, our_addr) 405 struct sci_softc *dev; 406 u_char target, our_addr; 407 { 408 register int timeo = 2500; 409 410 QPRINTF (("sciselectbus %d\n", target)); 411 412 /* if we're already selected, return */ 413 if (dev->sc_flags & SCI_SELECTED) /* XXXX */ 414 return 1; 415 416 if ((*dev->sci_bus_csr & (SCI_BUS_BSY|SCI_BUS_SEL)) && 417 (*dev->sci_bus_csr & (SCI_BUS_BSY|SCI_BUS_SEL)) && 418 (*dev->sci_bus_csr & (SCI_BUS_BSY|SCI_BUS_SEL))) 419 return 1; 420 421 *dev->sci_tcmd = 0; 422 *dev->sci_odata = 0x80 + (1 << target); 423 *dev->sci_icmd = SCI_ICMD_DATA|SCI_ICMD_SEL; 424 while ((*dev->sci_bus_csr & SCI_BUS_BSY) == 0) { 425 if (--timeo > 0) { 426 delay(100); 427 } else { 428 break; 429 } 430 } 431 if (timeo) { 432 *dev->sci_icmd = 0; 433 dev->sc_flags |= SCI_SELECTED; 434 return (0); 435 } 436 *dev->sci_icmd = 0; 437 return (1); 438 } 439 440 int 441 sci_ixfer_out(dev, len, buf, phase) 442 register struct sci_softc *dev; 443 int len; 444 register u_char *buf; 445 int phase; 446 { 447 register int wait = sci_data_wait; 448 u_char csr; 449 450 QPRINTF(("sci_ixfer_out {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", 451 len, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], 452 buf[6], buf[7], buf[8], buf[9])); 453 454 *dev->sci_tcmd = phase; 455 *dev->sci_icmd = SCI_ICMD_DATA; 456 for (;len > 0; len--) { 457 csr = *dev->sci_bus_csr; 458 while (!(csr & SCI_BUS_REQ)) { 459 if ((csr & SCI_BUS_BSY) == 0 || --wait < 0) { 460 #ifdef DEBUG 461 if (sci_debug) 462 printf("sci_ixfer_out fail: l%d i%x w%d\n", 463 len, csr, wait); 464 #endif 465 return (len); 466 } 467 delay(1); 468 csr = *dev->sci_bus_csr; 469 } 470 471 if (!(*dev->sci_csr & SCI_CSR_PHASE_MATCH)) 472 break; 473 *dev->sci_odata = *buf; 474 *dev->sci_icmd = SCI_ICMD_DATA|SCI_ICMD_ACK; 475 buf++; 476 while (*dev->sci_bus_csr & SCI_BUS_REQ); 477 *dev->sci_icmd = SCI_ICMD_DATA; 478 } 479 480 QPRINTF(("sci_ixfer_out done\n")); 481 return (0); 482 } 483 484 void 485 sci_ixfer_in(dev, len, buf, phase) 486 struct sci_softc *dev; 487 int len; 488 register u_char *buf; 489 int phase; 490 { 491 int wait = sci_data_wait; 492 u_char *obp = buf; 493 u_char csr; 494 volatile register u_char *sci_bus_csr = dev->sci_bus_csr; 495 volatile register u_char *sci_data = dev->sci_data; 496 volatile register u_char *sci_icmd = dev->sci_icmd; 497 498 csr = *sci_bus_csr; 499 500 QPRINTF(("sci_ixfer_in %d, csr=%02x\n", len, csr)); 501 502 *dev->sci_tcmd = phase; 503 *sci_icmd = 0; 504 for (;len > 0; len--) { 505 csr = *sci_bus_csr; 506 while (!(csr & SCI_BUS_REQ)) { 507 if (!(csr & SCI_BUS_BSY) || --wait < 0) { 508 #ifdef DEBUG 509 if (sci_debug) 510 printf("sci_ixfer_in fail: l%d i%x w%d\n", 511 len, csr, wait); 512 #endif 513 return; 514 } 515 516 delay(1); 517 csr = *sci_bus_csr; 518 } 519 520 if (!(*dev->sci_csr & SCI_CSR_PHASE_MATCH)) 521 break; 522 *buf = *sci_data; 523 *sci_icmd = SCI_ICMD_ACK; 524 buf++; 525 while (*sci_bus_csr & SCI_BUS_REQ); 526 *sci_icmd = 0; 527 } 528 529 QPRINTF(("sci_ixfer_in {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", 530 len, obp[0], obp[1], obp[2], obp[3], obp[4], obp[5], 531 obp[6], obp[7], obp[8], obp[9])); 532 } 533 534 /* 535 * SCSI 'immediate' command: issue a command to some SCSI device 536 * and get back an 'immediate' response (i.e., do programmed xfer 537 * to get the response data). 'cbuf' is a buffer containing a scsi 538 * command of length clen bytes. 'buf' is a buffer of length 'len' 539 * bytes for data. The transfer direction is determined by the device 540 * (i.e., by the scsi bus data xfer phase). If 'len' is zero, the 541 * command must supply no data. 'xferphase' is the bus phase the 542 * caller expects to happen after the command is issued. It should 543 * be one of DATA_IN_PHASE, DATA_OUT_PHASE or STATUS_PHASE. 544 */ 545 int 546 sciicmd(dev, target, cbuf, clen, buf, len, xferphase) 547 struct sci_softc *dev; 548 void *cbuf, *buf; 549 int clen, len; 550 u_char xferphase; 551 { 552 u_char phase, csr, asr; 553 register int wait; 554 555 /* select the SCSI bus (it's an error if bus isn't free) */ 556 if (sciselectbus (dev, target, dev->sc_scsi_addr)) 557 return -1; 558 /* 559 * Wait for a phase change (or error) then let the device 560 * sequence us through the various SCSI phases. 561 */ 562 dev->sc_stat[0] = 0xff; 563 dev->sc_msg[0] = 0xff; 564 phase = CMD_PHASE; 565 while (1) { 566 wait = sci_cmd_wait; 567 568 while ((*dev->sci_bus_csr & (SCI_BUS_REQ|SCI_BUS_BSY)) == SCI_BUS_BSY); 569 570 QPRINTF((">CSR:%02x<", *dev->sci_bus_csr)); 571 if ((*dev->sci_bus_csr & SCI_BUS_REQ) == 0) { 572 return -1; 573 } 574 phase = SCI_PHASE(*dev->sci_bus_csr); 575 576 switch (phase) { 577 case CMD_PHASE: 578 if (sci_ixfer_out (dev, clen, cbuf, phase)) 579 goto abort; 580 phase = xferphase; 581 break; 582 583 case DATA_IN_PHASE: 584 if (len <= 0) 585 goto abort; 586 wait = sci_data_wait; 587 sci_ixfer_in (dev, len, buf, phase); 588 phase = STATUS_PHASE; 589 break; 590 591 case DATA_OUT_PHASE: 592 if (len <= 0) 593 goto abort; 594 wait = sci_data_wait; 595 if (sci_ixfer_out (dev, len, buf, phase)) 596 goto abort; 597 phase = STATUS_PHASE; 598 break; 599 600 case MESG_IN_PHASE: 601 dev->sc_msg[0] = 0xff; 602 sci_ixfer_in (dev, 1, dev->sc_msg,phase); 603 dev->sc_flags &= ~SCI_SELECTED; 604 while (*dev->sci_bus_csr & SCI_BUS_BSY); 605 goto out; 606 break; 607 608 case MESG_OUT_PHASE: 609 phase = STATUS_PHASE; 610 break; 611 612 case STATUS_PHASE: 613 sci_ixfer_in (dev, 1, dev->sc_stat, phase); 614 phase = MESG_IN_PHASE; 615 break; 616 617 case BUS_FREE_PHASE: 618 goto out; 619 620 default: 621 printf("sci: unexpected phase %d in icmd from %d\n", 622 phase, target); 623 goto abort; 624 } 625 #if 0 626 if (wait <= 0) 627 goto abort; 628 #endif 629 } 630 631 abort: 632 sciabort(dev, "icmd"); 633 out: 634 QPRINTF(("=STS:%02x=", dev->sc_stat[0])); 635 return (dev->sc_stat[0]); 636 } 637 638 int 639 scigo(dev, xs) 640 struct sci_softc *dev; 641 struct scsi_xfer *xs; 642 { 643 int i, count, target; 644 u_char phase, csr, asr, cmd, *addr; 645 int wait; 646 647 target = xs->sc_link->target; 648 count = xs->datalen; 649 addr = xs->data; 650 651 if (sci_no_dma) { 652 sciicmd (dev, target, (u_char *) xs->cmd, xs->cmdlen, 653 addr, count, 654 xs->flags & SCSI_DATA_IN ? DATA_IN_PHASE : DATA_OUT_PHASE); 655 656 return (1); 657 } 658 659 /* select the SCSI bus (it's an error if bus isn't free) */ 660 if (sciselectbus (dev, target, dev->sc_scsi_addr)) 661 return -1; 662 /* 663 * Wait for a phase change (or error) then let the device 664 * sequence us through the various SCSI phases. 665 */ 666 dev->sc_stat[0] = 0xff; 667 dev->sc_msg[0] = 0xff; 668 phase = CMD_PHASE; 669 while (1) { 670 while ((*dev->sci_bus_csr & (SCI_BUS_REQ|SCI_BUS_BSY)) == 671 SCI_BUS_BSY); 672 673 QPRINTF((">CSR:%02x<", *dev->sci_bus_csr)); 674 if ((*dev->sci_bus_csr & SCI_BUS_REQ) == 0) { 675 goto abort; 676 } 677 phase = SCI_PHASE(*dev->sci_bus_csr); 678 679 switch (phase) { 680 case CMD_PHASE: 681 if (sci_ixfer_out (dev, xs->cmdlen, xs->cmd, phase)) 682 goto abort; 683 phase = xs->flags & SCSI_DATA_IN ? DATA_IN_PHASE : DATA_OUT_PHASE; 684 break; 685 686 case DATA_IN_PHASE: 687 if (count <= 0) 688 goto abort; 689 /* XXX use psuedo DMA if available */ 690 if (count >= 128 && dev->dma_xfer_in) 691 (*dev->dma_xfer_in)(dev, count, addr, phase); 692 else 693 sci_ixfer_in (dev, count, addr, phase); 694 phase = STATUS_PHASE; 695 break; 696 697 case DATA_OUT_PHASE: 698 if (count <= 0) 699 goto abort; 700 /* XXX use psuedo DMA if available */ 701 if (count >= 128 && dev->dma_xfer_out) 702 (*dev->dma_xfer_out)(dev, count, addr, phase); 703 else 704 if (sci_ixfer_out (dev, count, addr, phase)) 705 goto abort; 706 phase = STATUS_PHASE; 707 break; 708 709 case MESG_IN_PHASE: 710 dev->sc_msg[0] = 0xff; 711 sci_ixfer_in (dev, 1, dev->sc_msg,phase); 712 dev->sc_flags &= ~SCI_SELECTED; 713 while (*dev->sci_bus_csr & SCI_BUS_BSY); 714 goto out; 715 break; 716 717 case MESG_OUT_PHASE: 718 phase = STATUS_PHASE; 719 break; 720 721 case STATUS_PHASE: 722 sci_ixfer_in (dev, 1, dev->sc_stat, phase); 723 phase = MESG_IN_PHASE; 724 break; 725 726 case BUS_FREE_PHASE: 727 goto out; 728 729 default: 730 printf("sci: unexpected phase %d in icmd from %d\n", 731 phase, target); 732 goto abort; 733 } 734 } 735 736 abort: 737 sciabort(dev, "go"); 738 out: 739 QPRINTF(("=STS:%02x=", dev->sc_stat[0])); 740 return (1); 741 } 742
Indexes created Wed Sep 24 02:09:48 GMT 2025