adw.c revision 1.12.2.6
1 /* $NetBSD: adw.c,v 1.12.2.6 2000/11/22 16:03:10 bouyer Exp $ */ 2 3 /* 4 * Generic driver for the Advanced Systems Inc. SCSI controllers 5 * 6 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * Author: Baldassare Dante Profeta <dante (at) mclink.it> 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 NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/types.h> 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/callout.h> 44 #include <sys/kernel.h> 45 #include <sys/errno.h> 46 #include <sys/ioctl.h> 47 #include <sys/device.h> 48 #include <sys/malloc.h> 49 #include <sys/buf.h> 50 #include <sys/proc.h> 51 #include <sys/user.h> 52 53 #include <machine/bus.h> 54 #include <machine/intr.h> 55 56 #include <uvm/uvm_extern.h> 57 58 #include <dev/scsipi/scsi_all.h> 59 #include <dev/scsipi/scsipi_all.h> 60 #include <dev/scsipi/scsiconf.h> 61 62 #include <dev/ic/adwlib.h> 63 #include <dev/ic/adwmcode.h> 64 #include <dev/ic/adw.h> 65 66 #ifndef DDB 67 #define Debugger() panic("should call debugger here (adw.c)") 68 #endif /* ! DDB */ 69 70 /******************************************************************************/ 71 72 73 static int adw_alloc_controls __P((ADW_SOFTC *)); 74 static int adw_alloc_carriers __P((ADW_SOFTC *)); 75 static int adw_create_ccbs __P((ADW_SOFTC *, ADW_CCB *, int)); 76 static void adw_free_ccb __P((ADW_SOFTC *, ADW_CCB *)); 77 static void adw_reset_ccb __P((ADW_CCB *)); 78 static int adw_init_ccb __P((ADW_SOFTC *, ADW_CCB *)); 79 static ADW_CCB *adw_get_ccb __P((ADW_SOFTC *)); 80 static int adw_queue_ccb __P((ADW_SOFTC *, ADW_CCB *)); 81 82 static void adw_scsipi_request __P((struct scsipi_channel *, 83 scsipi_adapter_req_t, void *)); 84 static int adw_build_req __P((ADW_SOFTC *, ADW_CCB *)); 85 static void adw_build_sglist __P((ADW_CCB *, ADW_SCSI_REQ_Q *, ADW_SG_BLOCK *)); 86 static void adwminphys __P((struct buf *)); 87 static void adw_isr_callback __P((ADW_SOFTC *, ADW_SCSI_REQ_Q *)); 88 static void adw_async_callback __P((ADW_SOFTC *, u_int8_t)); 89 90 static void adw_print_info __P((ADW_SOFTC *, int)); 91 92 static int adw_poll __P((ADW_SOFTC *, struct scsipi_xfer *, int)); 93 static void adw_timeout __P((void *)); 94 static void adw_reset_bus __P((ADW_SOFTC *)); 95 96 97 /******************************************************************************/ 98 /* DMA Mapping for Control Blocks */ 99 /******************************************************************************/ 100 101 102 static int 103 adw_alloc_controls(sc) 104 ADW_SOFTC *sc; 105 { 106 bus_dma_segment_t seg; 107 int error, rseg; 108 109 /* 110 * Allocate the control structure. 111 */ 112 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adw_control), 113 PAGE_SIZE, 0, &seg, 1, &rseg, 114 BUS_DMA_NOWAIT)) != 0) { 115 printf("%s: unable to allocate control structures," 116 " error = %d\n", sc->sc_dev.dv_xname, error); 117 return (error); 118 } 119 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 120 sizeof(struct adw_control), (caddr_t *) & sc->sc_control, 121 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 122 printf("%s: unable to map control structures, error = %d\n", 123 sc->sc_dev.dv_xname, error); 124 return (error); 125 } 126 127 /* 128 * Create and load the DMA map used for the control blocks. 129 */ 130 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adw_control), 131 1, sizeof(struct adw_control), 0, BUS_DMA_NOWAIT, 132 &sc->sc_dmamap_control)) != 0) { 133 printf("%s: unable to create control DMA map, error = %d\n", 134 sc->sc_dev.dv_xname, error); 135 return (error); 136 } 137 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 138 sc->sc_control, sizeof(struct adw_control), NULL, 139 BUS_DMA_NOWAIT)) != 0) { 140 printf("%s: unable to load control DMA map, error = %d\n", 141 sc->sc_dev.dv_xname, error); 142 return (error); 143 } 144 145 return (0); 146 } 147 148 149 static int 150 adw_alloc_carriers(sc) 151 ADW_SOFTC *sc; 152 { 153 bus_dma_segment_t seg; 154 int error, rseg; 155 156 /* 157 * Allocate the control structure. 158 */ 159 sc->sc_control->carriers = malloc(sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 160 M_DEVBUF, M_WAITOK); 161 if(!sc->sc_control->carriers) { 162 printf("%s: malloc() failed in allocating carrier structures\n", 163 sc->sc_dev.dv_xname); 164 return (ENOMEM); 165 } 166 167 if ((error = bus_dmamem_alloc(sc->sc_dmat, 168 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 169 0x10, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 170 printf("%s: unable to allocate carrier structures," 171 " error = %d\n", sc->sc_dev.dv_xname, error); 172 return (error); 173 } 174 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 175 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 176 (caddr_t *) &sc->sc_control->carriers, 177 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 178 printf("%s: unable to map carrier structures," 179 " error = %d\n", sc->sc_dev.dv_xname, error); 180 return (error); 181 } 182 183 /* 184 * Create and load the DMA map used for the control blocks. 185 */ 186 if ((error = bus_dmamap_create(sc->sc_dmat, 187 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 1, 188 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 0,BUS_DMA_NOWAIT, 189 &sc->sc_dmamap_carrier)) != 0) { 190 printf("%s: unable to create carriers DMA map," 191 " error = %d\n", sc->sc_dev.dv_xname, error); 192 return (error); 193 } 194 if ((error = bus_dmamap_load(sc->sc_dmat, 195 sc->sc_dmamap_carrier, sc->sc_control->carriers, 196 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, NULL, 197 BUS_DMA_NOWAIT)) != 0) { 198 printf("%s: unable to load carriers DMA map," 199 " error = %d\n", sc->sc_dev.dv_xname, error); 200 return (error); 201 } 202 203 return (0); 204 } 205 206 207 /******************************************************************************/ 208 /* Control Blocks routines */ 209 /******************************************************************************/ 210 211 212 /* 213 * Create a set of ccbs and add them to the free list. Called once 214 * by adw_init(). We return the number of CCBs successfully created. 215 */ 216 static int 217 adw_create_ccbs(sc, ccbstore, count) 218 ADW_SOFTC *sc; 219 ADW_CCB *ccbstore; 220 int count; 221 { 222 ADW_CCB *ccb; 223 int i, error; 224 225 for (i = 0; i < count; i++) { 226 ccb = &ccbstore[i]; 227 if ((error = adw_init_ccb(sc, ccb)) != 0) { 228 printf("%s: unable to initialize ccb, error = %d\n", 229 sc->sc_dev.dv_xname, error); 230 return (i); 231 } 232 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 233 } 234 235 return (i); 236 } 237 238 239 /* 240 * A ccb is put onto the free list. 241 */ 242 static void 243 adw_free_ccb(sc, ccb) 244 ADW_SOFTC *sc; 245 ADW_CCB *ccb; 246 { 247 int s; 248 249 s = splbio(); 250 251 adw_reset_ccb(ccb); 252 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 253 254 splx(s); 255 } 256 257 258 static void 259 adw_reset_ccb(ccb) 260 ADW_CCB *ccb; 261 { 262 263 ccb->flags = 0; 264 } 265 266 267 static int 268 adw_init_ccb(sc, ccb) 269 ADW_SOFTC *sc; 270 ADW_CCB *ccb; 271 { 272 int hashnum, error; 273 274 /* 275 * Create the DMA map for this CCB. 276 */ 277 error = bus_dmamap_create(sc->sc_dmat, 278 (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 279 ADW_MAX_SG_LIST, (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 280 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 281 if (error) { 282 printf("%s: unable to create CCB DMA map, error = %d\n", 283 sc->sc_dev.dv_xname, error); 284 return (error); 285 } 286 287 /* 288 * put in the phystokv hash table 289 * Never gets taken out. 290 */ 291 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 292 ADW_CCB_OFF(ccb); 293 hashnum = CCB_HASH(ccb->hashkey); 294 ccb->nexthash = sc->sc_ccbhash[hashnum]; 295 sc->sc_ccbhash[hashnum] = ccb; 296 adw_reset_ccb(ccb); 297 return (0); 298 } 299 300 301 /* 302 * Get a free ccb 303 * 304 * If there are none, see if we can allocate a new one 305 */ 306 static ADW_CCB * 307 adw_get_ccb(sc) 308 ADW_SOFTC *sc; 309 { 310 ADW_CCB *ccb = 0; 311 int s; 312 313 s = splbio(); 314 315 ccb = sc->sc_free_ccb.tqh_first; 316 if (ccb != NULL) { 317 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 318 ccb->flags |= CCB_ALLOC; 319 } 320 splx(s); 321 return (ccb); 322 } 323 324 325 /* 326 * Given a physical address, find the ccb that it corresponds to. 327 */ 328 ADW_CCB * 329 adw_ccb_phys_kv(sc, ccb_phys) 330 ADW_SOFTC *sc; 331 u_int32_t ccb_phys; 332 { 333 int hashnum = CCB_HASH(ccb_phys); 334 ADW_CCB *ccb = sc->sc_ccbhash[hashnum]; 335 336 while (ccb) { 337 if (ccb->hashkey == ccb_phys) 338 break; 339 ccb = ccb->nexthash; 340 } 341 return (ccb); 342 } 343 344 345 /* 346 * Queue a CCB to be sent to the controller, and send it if possible. 347 */ 348 static int 349 adw_queue_ccb(sc, ccb) 350 ADW_SOFTC *sc; 351 ADW_CCB *ccb; 352 { 353 int errcode = ADW_SUCCESS; 354 355 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 356 357 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 358 359 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 360 errcode = AdwExeScsiQueue(sc, &ccb->scsiq); 361 switch(errcode) { 362 case ADW_SUCCESS: 363 break; 364 365 case ADW_BUSY: 366 printf("ADW_BUSY\n"); 367 return(ADW_BUSY); 368 369 case ADW_ERROR: 370 printf("ADW_ERROR\n"); 371 return(ADW_ERROR); 372 } 373 374 TAILQ_INSERT_TAIL(&sc->sc_pending_ccb, ccb, chain); 375 376 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 377 callout_reset(&ccb->xs->xs_callout, 378 (ccb->timeout * hz) / 1000, adw_timeout, ccb); 379 } 380 381 return(errcode); 382 } 383 384 385 /******************************************************************************/ 386 /* SCSI layer interfacing routines */ 387 /******************************************************************************/ 388 389 390 int 391 adw_init(sc) 392 ADW_SOFTC *sc; 393 { 394 u_int16_t warn_code; 395 396 397 sc->cfg.lib_version = (ADW_LIB_VERSION_MAJOR << 8) | 398 ADW_LIB_VERSION_MINOR; 399 sc->cfg.chip_version = 400 ADW_GET_CHIP_VERSION(sc->sc_iot, sc->sc_ioh, sc->bus_type); 401 402 /* 403 * Reset the chip to start and allow register writes. 404 */ 405 if (ADW_FIND_SIGNATURE(sc->sc_iot, sc->sc_ioh) == 0) { 406 panic("adw_init: adw_find_signature failed"); 407 } else { 408 AdwResetChip(sc->sc_iot, sc->sc_ioh); 409 410 warn_code = AdwInitFromEEPROM(sc); 411 412 if (warn_code & ADW_WARN_EEPROM_CHKSUM) 413 printf("%s: Bad checksum found. " 414 "Setting default values\n", 415 sc->sc_dev.dv_xname); 416 if (warn_code & ADW_WARN_EEPROM_TERMINATION) 417 printf("%s: Bad bus termination setting." 418 "Using automatic termination.\n", 419 sc->sc_dev.dv_xname); 420 } 421 422 sc->isr_callback = (ADW_CALLBACK) adw_isr_callback; 423 sc->async_callback = (ADW_CALLBACK) adw_async_callback; 424 425 return 0; 426 } 427 428 429 void 430 adw_attach(sc) 431 ADW_SOFTC *sc; 432 { 433 struct scsipi_adapter *adapt = &sc->sc_adapter; 434 struct scsipi_channel *chan = &sc->sc_channel; 435 int ncontrols, error; 436 437 TAILQ_INIT(&sc->sc_free_ccb); 438 TAILQ_INIT(&sc->sc_waiting_ccb); 439 TAILQ_INIT(&sc->sc_pending_ccb); 440 441 /* 442 * Allocate the Control Blocks. 443 */ 444 error = adw_alloc_controls(sc); 445 if (error) 446 return; /* (error) */ ; 447 448 bzero(sc->sc_control, sizeof(struct adw_control)); 449 450 /* 451 * Create and initialize the Control Blocks. 452 */ 453 ncontrols = adw_create_ccbs(sc, sc->sc_control->ccbs, ADW_MAX_CCB); 454 if (ncontrols == 0) { 455 printf("%s: unable to create Control Blocks\n", 456 sc->sc_dev.dv_xname); 457 return; /* (ENOMEM) */ ; 458 } else if (ncontrols != ADW_MAX_CCB) { 459 printf("%s: WARNING: only %d of %d Control Blocks" 460 " created\n", 461 sc->sc_dev.dv_xname, ncontrols, ADW_MAX_CCB); 462 } 463 464 /* 465 * Create and initialize the Carriers. 466 */ 467 error = adw_alloc_carriers(sc); 468 if (error) 469 return; /* (error) */ ; 470 471 /* 472 * Zero's the freeze_device status 473 */ 474 bzero(sc->sc_freeze_dev, sizeof(sc->sc_freeze_dev)); 475 476 /* 477 * Initialize the adapter 478 */ 479 switch (AdwInitDriver(sc)) { 480 case ADW_IERR_BIST_PRE_TEST: 481 panic("%s: BIST pre-test error", 482 sc->sc_dev.dv_xname); 483 break; 484 485 case ADW_IERR_BIST_RAM_TEST: 486 panic("%s: BIST RAM test error", 487 sc->sc_dev.dv_xname); 488 break; 489 490 case ADW_IERR_MCODE_CHKSUM: 491 panic("%s: Microcode checksum error", 492 sc->sc_dev.dv_xname); 493 break; 494 495 case ADW_IERR_ILLEGAL_CONNECTION: 496 panic("%s: All three connectors are in use", 497 sc->sc_dev.dv_xname); 498 break; 499 500 case ADW_IERR_REVERSED_CABLE: 501 panic("%s: Cable is reversed", 502 sc->sc_dev.dv_xname); 503 break; 504 505 case ADW_IERR_HVD_DEVICE: 506 panic("%s: HVD attached to LVD connector", 507 sc->sc_dev.dv_xname); 508 break; 509 510 case ADW_IERR_SINGLE_END_DEVICE: 511 panic("%s: single-ended device is attached to" 512 " one of the connectors", 513 sc->sc_dev.dv_xname); 514 break; 515 516 case ADW_IERR_NO_CARRIER: 517 panic("%s: unable to create Carriers", 518 sc->sc_dev.dv_xname); 519 break; 520 521 case ADW_WARN_BUSRESET_ERROR: 522 printf("%s: WARNING: Bus Reset Error\n", 523 sc->sc_dev.dv_xname); 524 break; 525 } 526 527 /* 528 * Fill in the scsipi_adapter. 529 */ 530 memset(adapt, 0, sizeof(*adapt)); 531 adapt->adapt_dev = &sc->sc_dev; 532 adapt->adapt_nchannels = 1; 533 adapt->adapt_openings = ncontrols; 534 adapt->adapt_max_periph = adapt->adapt_openings; 535 adapt->adapt_request = adw_scsipi_request; 536 adapt->adapt_minphys = adwminphys; 537 538 /* 539 * Fill in the scsipi_channel. 540 */ 541 memset(chan, 0, sizeof(*chan)); 542 chan->chan_adapter = adapt; 543 chan->chan_bustype = &scsi_bustype; 544 chan->chan_channel = 0; 545 chan->chan_ntargets = ADW_MAX_TID + 1; 546 chan->chan_nluns = 7; 547 chan->chan_id = sc->chip_scsi_id; 548 549 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 550 } 551 552 553 static void 554 adwminphys(bp) 555 struct buf *bp; 556 { 557 558 if (bp->b_bcount > ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE)) 559 bp->b_bcount = ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE); 560 minphys(bp); 561 } 562 563 564 /* 565 * start a scsi operation given the command and the data address. 566 * Also needs the unit, target and lu. 567 */ 568 static void 569 adw_scsipi_request(chan, req, arg) 570 struct scsipi_channel *chan; 571 scsipi_adapter_req_t req; 572 void *arg; 573 { 574 struct scsipi_xfer *xs; 575 ADW_SOFTC *sc = (void *)chan->chan_adapter->adapt_dev; 576 ADW_CCB *ccb; 577 int s, retry; 578 579 switch (req) { 580 case ADAPTER_REQ_RUN_XFER: 581 xs = arg; 582 583 /* 584 * get a ccb to use. If the transfer 585 * is from a buf (possibly from interrupt time) 586 * then we can't allow it to sleep 587 */ 588 589 ccb = adw_get_ccb(sc); 590 #ifdef DIAGNOSTIC 591 /* 592 * This should never happen as we track the resources 593 * in the mid-layer. 594 */ 595 if (ccb == NULL) { 596 scsipi_printaddr(xs->xs_periph); 597 printf("unable to allocate ccb\n"); 598 panic("adw_scsipi_request"); 599 } 600 #endif 601 602 ccb->xs = xs; 603 ccb->timeout = xs->timeout; 604 605 if (adw_build_req(sc, ccb)) { 606 s = splbio(); 607 retry = adw_queue_ccb(sc, ccb); 608 splx(s); 609 610 switch(retry) { 611 case ADW_BUSY: 612 xs->error = XS_RESOURCE_SHORTAGE; 613 adw_free_ccb(sc, ccb); 614 scsipi_done(xs); 615 return; 616 617 case ADW_ERROR: 618 xs->error = XS_DRIVER_STUFFUP; 619 adw_free_ccb(sc, ccb); 620 scsipi_done(xs); 621 return; 622 } 623 if ((xs->xs_control & XS_CTL_POLL) == 0) 624 return; 625 /* 626 * Not allowed to use interrupts, poll for completion. 627 */ 628 if (adw_poll(sc, xs, ccb->timeout)) { 629 adw_timeout(ccb); 630 if (adw_poll(sc, xs, ccb->timeout)) 631 adw_timeout(ccb); 632 } 633 } 634 return; 635 636 case ADAPTER_REQ_GROW_RESOURCES: 637 /* XXX Not supported. */ 638 return; 639 640 case ADAPTER_REQ_SET_XFER_MODE: 641 /* XXX XXX XXX */ 642 return; 643 } 644 } 645 646 647 /* 648 * Build a request structure for the Wide Boards. 649 */ 650 static int 651 adw_build_req(sc, ccb) 652 ADW_SOFTC *sc; 653 ADW_CCB *ccb; 654 { 655 struct scsipi_xfer *xs = ccb->xs; 656 struct scsipi_periph *periph = xs->xs_periph; 657 bus_dma_tag_t dmat = sc->sc_dmat; 658 ADW_SCSI_REQ_Q *scsiqp; 659 int error; 660 661 scsiqp = &ccb->scsiq; 662 bzero(scsiqp, sizeof(ADW_SCSI_REQ_Q)); 663 664 /* 665 * Set the ADW_SCSI_REQ_Q 'ccb_ptr' to point to the 666 * physical CCB structure. 667 */ 668 scsiqp->ccb_ptr = ccb->hashkey; 669 670 /* 671 * Build the ADW_SCSI_REQ_Q request. 672 */ 673 674 /* 675 * Set CDB length and copy it to the request structure. 676 * For wide boards a CDB length maximum of 16 bytes 677 * is supported. 678 */ 679 bcopy(xs->cmd, &scsiqp->cdb, ((scsiqp->cdb_len = xs->cmdlen) <= 12)? 680 xs->cmdlen : 12 ); 681 if(xs->cmdlen > 12) 682 bcopy(&(xs->cmd[12]), &scsiqp->cdb16, xs->cmdlen - 12); 683 684 scsiqp->target_id = periph->periph_target; 685 scsiqp->target_lun = periph->periph_lun; 686 687 scsiqp->vsense_addr = &ccb->scsi_sense; 688 scsiqp->sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 689 ADW_CCB_OFF(ccb) + offsetof(struct adw_ccb, scsi_sense); 690 scsiqp->sense_len = sizeof(struct scsipi_sense_data); 691 692 /* 693 * Build ADW_SCSI_REQ_Q for a scatter-gather buffer command. 694 */ 695 if (xs->datalen) { 696 /* 697 * Map the DMA transfer. 698 */ 699 #ifdef TFS 700 if (xs->xs_control & SCSI_DATA_UIO) { 701 error = bus_dmamap_load_uio(dmat, 702 ccb->dmamap_xfer, (struct uio *) xs->data, 703 BUS_DMA_NOWAIT); 704 } else 705 #endif /* TFS */ 706 { 707 error = bus_dmamap_load(dmat, 708 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 709 BUS_DMA_NOWAIT); 710 } 711 712 switch (error) { 713 case 0: 714 break; 715 case ENOMEM: 716 case EAGAIN: 717 xs->error = XS_RESOURCE_SHORTAGE; 718 goto out_bad; 719 720 default: 721 xs->error = XS_DRIVER_STUFFUP; 722 printf("%s: error %d loading DMA map\n", 723 sc->sc_dev.dv_xname, error); 724 out_bad: 725 adw_free_ccb(sc, ccb); 726 scsipi_done(xs); 727 return(0); 728 } 729 730 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 731 ccb->dmamap_xfer->dm_mapsize, 732 (xs->xs_control & XS_CTL_DATA_IN) ? 733 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 734 735 /* 736 * Build scatter-gather list. 737 */ 738 scsiqp->data_cnt = xs->datalen; 739 scsiqp->vdata_addr = xs->data; 740 scsiqp->data_addr = ccb->dmamap_xfer->dm_segs[0].ds_addr; 741 bzero(ccb->sg_block, sizeof(ADW_SG_BLOCK) * ADW_NUM_SG_BLOCK); 742 adw_build_sglist(ccb, scsiqp, ccb->sg_block); 743 } else { 744 /* 745 * No data xfer, use non S/G values. 746 */ 747 scsiqp->data_cnt = 0; 748 scsiqp->vdata_addr = 0; 749 scsiqp->data_addr = 0; 750 } 751 752 return (1); 753 } 754 755 756 /* 757 * Build scatter-gather list for Wide Boards. 758 */ 759 static void 760 adw_build_sglist(ccb, scsiqp, sg_block) 761 ADW_CCB *ccb; 762 ADW_SCSI_REQ_Q *scsiqp; 763 ADW_SG_BLOCK *sg_block; 764 { 765 u_long sg_block_next_addr; /* block and its next */ 766 u_int32_t sg_block_physical_addr; 767 int i; /* how many SG entries */ 768 bus_dma_segment_t *sg_list = &ccb->dmamap_xfer->dm_segs[0]; 769 int sg_elem_cnt = ccb->dmamap_xfer->dm_nsegs; 770 771 772 sg_block_next_addr = (u_long) sg_block; /* allow math operation */ 773 sg_block_physical_addr = ccb->hashkey + 774 offsetof(struct adw_ccb, sg_block[0]); 775 scsiqp->sg_real_addr = sg_block_physical_addr; 776 777 /* 778 * If there are more than NO_OF_SG_PER_BLOCK dma segments (hw sg-list) 779 * then split the request into multiple sg-list blocks. 780 */ 781 782 do { 783 for (i = 0; i < NO_OF_SG_PER_BLOCK; i++) { 784 sg_block->sg_list[i].sg_addr = sg_list->ds_addr; 785 sg_block->sg_list[i].sg_count = sg_list->ds_len; 786 787 if (--sg_elem_cnt == 0) { 788 /* last entry, get out */ 789 sg_block->sg_cnt = i + i; 790 sg_block->sg_ptr = NULL; /* next link = NULL */ 791 return; 792 } 793 sg_list++; 794 } 795 sg_block_next_addr += sizeof(ADW_SG_BLOCK); 796 sg_block_physical_addr += sizeof(ADW_SG_BLOCK); 797 798 sg_block->sg_cnt = NO_OF_SG_PER_BLOCK; 799 sg_block->sg_ptr = sg_block_physical_addr; 800 sg_block = (ADW_SG_BLOCK *) sg_block_next_addr; /* virt. addr */ 801 } while (1); 802 } 803 804 805 /******************************************************************************/ 806 /* Interrupts and TimeOut routines */ 807 /******************************************************************************/ 808 809 810 int 811 adw_intr(arg) 812 void *arg; 813 { 814 ADW_SOFTC *sc = arg; 815 816 817 if(AdwISR(sc) != ADW_FALSE) { 818 return (1); 819 } 820 821 return (0); 822 } 823 824 825 /* 826 * Poll a particular unit, looking for a particular xs 827 */ 828 static int 829 adw_poll(sc, xs, count) 830 ADW_SOFTC *sc; 831 struct scsipi_xfer *xs; 832 int count; 833 { 834 835 /* timeouts are in msec, so we loop in 1000 usec cycles */ 836 while (count) { 837 adw_intr(sc); 838 if (xs->xs_status & XS_STS_DONE) 839 return (0); 840 delay(1000); /* only happens in boot so ok */ 841 count--; 842 } 843 return (1); 844 } 845 846 847 static void 848 adw_timeout(arg) 849 void *arg; 850 { 851 ADW_CCB *ccb = arg; 852 struct scsipi_xfer *xs = ccb->xs; 853 struct scsipi_periph *periph = xs->xs_periph; 854 ADW_SOFTC *sc = 855 (void *)periph->periph_channel->chan_adapter->adapt_dev; 856 int s; 857 858 scsipi_printaddr(periph); 859 printf("timed out"); 860 861 s = splbio(); 862 863 if (ccb->flags & CCB_ABORTED) { 864 /* 865 * Abort Timed Out 866 * 867 * No more opportunities. Lets try resetting the bus and 868 * reinitialize the host adapter. 869 */ 870 callout_stop(&xs->xs_callout); 871 printf(" AGAIN. Resetting SCSI Bus\n"); 872 adw_reset_bus(sc); 873 splx(s); 874 return; 875 } else if (ccb->flags & CCB_ABORTING) { 876 /* 877 * Abort the operation that has timed out. 878 * 879 * Second opportunity. 880 */ 881 printf("\n"); 882 xs->error = XS_TIMEOUT; 883 ccb->flags |= CCB_ABORTED; 884 #if 0 885 /* 886 * - XXX - 3.3a microcode is BROKEN!!! 887 * 888 * We cannot abort a CCB, so we can only hope the command 889 * get completed before the next timeout, otherwise a 890 * Bus Reset will arrive inexorably. 891 */ 892 /* 893 * ADW_ABORT_CCB() makes the board to generate an interrupt 894 * 895 * - XXX - The above assertion MUST be verified (and this 896 * code changed as well [callout_*()]), when the 897 * ADW_ABORT_CCB will be working again 898 */ 899 ADW_ABORT_CCB(sc, ccb); 900 #endif 901 /* 902 * waiting for multishot callout_reset() let's restart it 903 * by hand so the next time a timeout event will occour 904 * we will reset the bus. 905 */ 906 callout_reset(&xs->xs_callout, 907 (ccb->timeout * hz) / 1000, adw_timeout, ccb); 908 } else { 909 /* 910 * Abort the operation that has timed out. 911 * 912 * First opportunity. 913 */ 914 printf("\n"); 915 xs->error = XS_TIMEOUT; 916 ccb->flags |= CCB_ABORTING; 917 #if 0 918 /* 919 * - XXX - 3.3a microcode is BROKEN!!! 920 * 921 * We cannot abort a CCB, so we can only hope the command 922 * get completed before the next 2 timeout, otherwise a 923 * Bus Reset will arrive inexorably. 924 */ 925 /* 926 * ADW_ABORT_CCB() makes the board to generate an interrupt 927 * 928 * - XXX - The above assertion MUST be verified (and this 929 * code changed as well [callout_*()]), when the 930 * ADW_ABORT_CCB will be working again 931 */ 932 ADW_ABORT_CCB(sc, ccb); 933 #endif 934 /* 935 * waiting for multishot callout_reset() let's restart it 936 * by hand so to give a second opportunity to the command 937 * which timed-out. 938 */ 939 callout_reset(&xs->xs_callout, 940 (ccb->timeout * hz) / 1000, adw_timeout, ccb); 941 } 942 943 splx(s); 944 } 945 946 947 static void 948 adw_reset_bus(sc) 949 ADW_SOFTC *sc; 950 { 951 ADW_CCB *ccb; 952 int s; 953 struct scsipi_xfer *xs; 954 955 s = splbio(); 956 AdwResetSCSIBus(sc); 957 while((ccb = TAILQ_LAST(&sc->sc_pending_ccb, 958 adw_pending_ccb)) != NULL) { 959 callout_stop(&ccb->xs->xs_callout); 960 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 961 xs = ccb->xs; 962 adw_free_ccb(sc, ccb); 963 xs->error = XS_RESOURCE_SHORTAGE; 964 scsipi_done(xs); 965 } 966 splx(s); 967 } 968 969 970 /******************************************************************************/ 971 /* Host Adapter and Peripherals Information Routines */ 972 /******************************************************************************/ 973 974 975 static void 976 adw_print_info(sc, tid) 977 ADW_SOFTC *sc; 978 int tid; 979 { 980 bus_space_tag_t iot = sc->sc_iot; 981 bus_space_handle_t ioh = sc->sc_ioh; 982 u_int16_t wdtr_able, wdtr_done, wdtr; 983 u_int16_t sdtr_able, sdtr_done, sdtr, period; 984 static int wdtr_reneg = 0, sdtr_reneg = 0; 985 986 if (tid == 0){ 987 wdtr_reneg = sdtr_reneg = 0; 988 } 989 990 printf("%s: target %d ", sc->sc_dev.dv_xname, tid); 991 992 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, wdtr_able); 993 if(wdtr_able & ADW_TID_TO_TIDMASK(tid)) { 994 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, wdtr_done); 995 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + 996 (2 * tid), wdtr); 997 printf("using %d-bits wide, ", (wdtr & 0x8000)? 16 : 8); 998 if((wdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) 999 wdtr_reneg = 1; 1000 } else { 1001 printf("wide transfers disabled, "); 1002 } 1003 1004 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, sdtr_able); 1005 if(sdtr_able & ADW_TID_TO_TIDMASK(tid)) { 1006 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, sdtr_done); 1007 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + 1008 (2 * tid), sdtr); 1009 sdtr &= ~0x8000; 1010 if((sdtr & 0x1F) != 0) { 1011 if((sdtr & 0x1F00) == 0x1100){ 1012 printf("80.0 MHz"); 1013 } else if((sdtr & 0x1F00) == 0x1000){ 1014 printf("40.0 MHz"); 1015 } else { 1016 /* <= 20.0 MHz */ 1017 period = (((sdtr >> 8) * 25) + 50)/4; 1018 if(period == 0) { 1019 /* Should never happen. */ 1020 printf("? MHz"); 1021 } else { 1022 printf("%d.%d MHz", 250/period, 1023 ADW_TENTHS(250, period)); 1024 } 1025 } 1026 printf(" synchronous transfers\n"); 1027 } else { 1028 printf("asynchronous transfers\n"); 1029 } 1030 if((sdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) 1031 sdtr_reneg = 1; 1032 } else { 1033 printf("synchronous transfers disabled\n"); 1034 } 1035 1036 if(wdtr_reneg || sdtr_reneg) { 1037 printf("%s: target %d %s", sc->sc_dev.dv_xname, tid, 1038 (wdtr_reneg)? ((sdtr_reneg)? "wide/sync" : "wide") : 1039 ((sdtr_reneg)? "sync" : "") ); 1040 printf(" renegotiation pending before next command.\n"); 1041 } 1042 } 1043 1044 1045 /******************************************************************************/ 1046 /* WIDE boards Interrupt callbacks */ 1047 /******************************************************************************/ 1048 1049 1050 /* 1051 * adw_isr_callback() - Second Level Interrupt Handler called by AdwISR() 1052 * 1053 * Interrupt callback function for the Wide SCSI Adv Library. 1054 * 1055 * Notice: 1056 * Interrupts are disabled by the caller (AdwISR() function), and will be 1057 * enabled at the end of the caller. 1058 */ 1059 static void 1060 adw_isr_callback(sc, scsiq) 1061 ADW_SOFTC *sc; 1062 ADW_SCSI_REQ_Q *scsiq; 1063 { 1064 bus_dma_tag_t dmat = sc->sc_dmat; 1065 ADW_CCB *ccb; 1066 struct scsipi_xfer *xs; 1067 struct scsipi_sense_data *s1, *s2; 1068 1069 1070 ccb = adw_ccb_phys_kv(sc, scsiq->ccb_ptr); 1071 1072 callout_stop(&ccb->xs->xs_callout); 1073 1074 xs = ccb->xs; 1075 1076 /* 1077 * If we were a data transfer, unload the map that described 1078 * the data buffer. 1079 */ 1080 if (xs->datalen) { 1081 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 1082 ccb->dmamap_xfer->dm_mapsize, 1083 (xs->xs_control & XS_CTL_DATA_IN) ? 1084 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1085 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 1086 } 1087 1088 if ((ccb->flags & CCB_ALLOC) == 0) { 1089 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 1090 Debugger(); 1091 return; 1092 } 1093 1094 /* 1095 * 'done_status' contains the command's ending status. 1096 * 'host_status' conatins the host adapter status. 1097 * 'scsi_status' contains the scsi peripheral status. 1098 */ 1099 if ((scsiq->host_status == QHSTA_NO_ERROR) && 1100 ((scsiq->done_status == QD_NO_ERROR) || 1101 (scsiq->done_status == QD_WITH_ERROR))) { 1102 switch (scsiq->host_status) { 1103 case SCSI_STATUS_GOOD: 1104 if ((scsiq->cdb[0] == INQUIRY) && 1105 (scsiq->target_lun == 0)) { 1106 adw_print_info(sc, scsiq->target_id); 1107 } 1108 xs->error = XS_NOERROR; 1109 xs->resid = scsiq->data_cnt; 1110 sc->sc_freeze_dev[scsiq->target_id] = 0; 1111 break; 1112 1113 case SCSI_STATUS_CHECK_CONDITION: 1114 case SCSI_STATUS_CMD_TERMINATED: 1115 s1 = &ccb->scsi_sense; 1116 s2 = &xs->sense.scsi_sense; 1117 *s2 = *s1; 1118 xs->error = XS_SENSE; 1119 sc->sc_freeze_dev[scsiq->target_id] = 1; 1120 break; 1121 1122 default: 1123 xs->error = XS_BUSY; 1124 sc->sc_freeze_dev[scsiq->target_id] = 1; 1125 break; 1126 } 1127 } else if (scsiq->done_status == QD_ABORTED_BY_HOST) { 1128 xs->error = XS_DRIVER_STUFFUP; 1129 } else { 1130 switch (scsiq->host_status) { 1131 case QHSTA_M_SEL_TIMEOUT: 1132 xs->error = XS_SELTIMEOUT; 1133 break; 1134 1135 case QHSTA_M_SXFR_OFF_UFLW: 1136 case QHSTA_M_SXFR_OFF_OFLW: 1137 case QHSTA_M_DATA_OVER_RUN: 1138 printf("%s: Overrun/Overflow/Underflow condition\n", 1139 sc->sc_dev.dv_xname); 1140 xs->error = XS_DRIVER_STUFFUP; 1141 break; 1142 1143 case QHSTA_M_SXFR_DESELECTED: 1144 case QHSTA_M_UNEXPECTED_BUS_FREE: 1145 printf("%s: Unexpected BUS free\n",sc->sc_dev.dv_xname); 1146 xs->error = XS_DRIVER_STUFFUP; 1147 break; 1148 1149 case QHSTA_M_SCSI_BUS_RESET: 1150 case QHSTA_M_SCSI_BUS_RESET_UNSOL: 1151 printf("%s: BUS Reset\n", sc->sc_dev.dv_xname); 1152 xs->error = XS_DRIVER_STUFFUP; 1153 break; 1154 1155 case QHSTA_M_BUS_DEVICE_RESET: 1156 printf("%s: Device Reset\n", sc->sc_dev.dv_xname); 1157 xs->error = XS_DRIVER_STUFFUP; 1158 break; 1159 1160 case QHSTA_M_QUEUE_ABORTED: 1161 printf("%s: Queue Aborted\n", sc->sc_dev.dv_xname); 1162 xs->error = XS_DRIVER_STUFFUP; 1163 break; 1164 1165 case QHSTA_M_SXFR_SDMA_ERR: 1166 case QHSTA_M_SXFR_SXFR_PERR: 1167 case QHSTA_M_RDMA_PERR: 1168 /* 1169 * DMA Error. This should *NEVER* happen! 1170 * 1171 * Lets try resetting the bus and reinitialize 1172 * the host adapter. 1173 */ 1174 printf("%s: DMA Error. Reseting bus\n", 1175 sc->sc_dev.dv_xname); 1176 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1177 adw_reset_bus(sc); 1178 xs->error = XS_BUSY; 1179 goto done; 1180 1181 case QHSTA_M_WTM_TIMEOUT: 1182 case QHSTA_M_SXFR_WD_TMO: 1183 /* The SCSI bus hung in a phase */ 1184 printf("%s: Watch Dog timer expired. Reseting bus\n", 1185 sc->sc_dev.dv_xname); 1186 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1187 adw_reset_bus(sc); 1188 xs->error = XS_BUSY; 1189 goto done; 1190 1191 case QHSTA_M_SXFR_XFR_PH_ERR: 1192 printf("%s: Transfer Error\n", sc->sc_dev.dv_xname); 1193 xs->error = XS_DRIVER_STUFFUP; 1194 break; 1195 1196 case QHSTA_M_BAD_CMPL_STATUS_IN: 1197 /* No command complete after a status message */ 1198 printf("%s: Bad Completion Status\n", 1199 sc->sc_dev.dv_xname); 1200 xs->error = XS_DRIVER_STUFFUP; 1201 break; 1202 1203 case QHSTA_M_AUTO_REQ_SENSE_FAIL: 1204 printf("%s: Auto Sense Failed\n", sc->sc_dev.dv_xname); 1205 xs->error = XS_DRIVER_STUFFUP; 1206 break; 1207 1208 case QHSTA_M_INVALID_DEVICE: 1209 printf("%s: Invalid Device\n", sc->sc_dev.dv_xname); 1210 xs->error = XS_DRIVER_STUFFUP; 1211 break; 1212 1213 case QHSTA_M_NO_AUTO_REQ_SENSE: 1214 /* 1215 * User didn't request sense, but we got a 1216 * check condition. 1217 */ 1218 printf("%s: Unexpected Check Condition\n", 1219 sc->sc_dev.dv_xname); 1220 xs->error = XS_DRIVER_STUFFUP; 1221 break; 1222 1223 case QHSTA_M_SXFR_UNKNOWN_ERROR: 1224 printf("%s: Unknown Error\n", sc->sc_dev.dv_xname); 1225 xs->error = XS_DRIVER_STUFFUP; 1226 break; 1227 1228 default: 1229 panic("%s: Unhandled Host Status Error %x", 1230 sc->sc_dev.dv_xname, scsiq->host_status); 1231 } 1232 } 1233 1234 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1235 done: adw_free_ccb(sc, ccb); 1236 scsipi_done(xs); 1237 } 1238 1239 1240 /* 1241 * adw_async_callback() - Adv Library asynchronous event callback function. 1242 */ 1243 static void 1244 adw_async_callback(sc, code) 1245 ADW_SOFTC *sc; 1246 u_int8_t code; 1247 { 1248 switch (code) { 1249 case ADV_ASYNC_SCSI_BUS_RESET_DET: 1250 /* The firmware detected a SCSI Bus reset. */ 1251 printf("%s: SCSI Bus reset detected\n", sc->sc_dev.dv_xname); 1252 break; 1253 1254 case ADV_ASYNC_RDMA_FAILURE: 1255 /* 1256 * Handle RDMA failure by resetting the SCSI Bus and 1257 * possibly the chip if it is unresponsive. 1258 */ 1259 printf("%s: RDMA failure. Resetting the SCSI Bus and" 1260 " the adapter\n", sc->sc_dev.dv_xname); 1261 AdwResetSCSIBus(sc); 1262 break; 1263 1264 case ADV_HOST_SCSI_BUS_RESET: 1265 /* Host generated SCSI bus reset occurred. */ 1266 printf("%s: Host generated SCSI bus reset occurred\n", 1267 sc->sc_dev.dv_xname); 1268 break; 1269 1270 case ADV_ASYNC_CARRIER_READY_FAILURE: 1271 /* Carrier Ready failure. */ 1272 printf("%s: Carrier Ready failure!\n", sc->sc_dev.dv_xname); 1273 break; 1274 1275 default: 1276 break; 1277 } 1278 } 1279
Indexes created Mon Oct 20 11:09:49 GMT 2025