adw.c revision 1.30
1 /* $NetBSD: adw.c,v 1.30 2001/04/30 02:55:08 lukem 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(ADW_SOFTC *); 74 static int adw_alloc_carriers(ADW_SOFTC *); 75 static int adw_create_ccbs(ADW_SOFTC *, ADW_CCB *, int); 76 static void adw_free_ccb(ADW_SOFTC *, ADW_CCB *); 77 static void adw_reset_ccb(ADW_CCB *); 78 static int adw_init_ccb(ADW_SOFTC *, ADW_CCB *); 79 static ADW_CCB *adw_get_ccb(ADW_SOFTC *); 80 static int adw_queue_ccb(ADW_SOFTC *, ADW_CCB *); 81 82 static void adw_scsipi_request(struct scsipi_channel *, 83 scsipi_adapter_req_t, void *); 84 static int adw_build_req(ADW_SOFTC *, ADW_CCB *); 85 static void adw_build_sglist(ADW_CCB *, ADW_SCSI_REQ_Q *, ADW_SG_BLOCK *); 86 static void adwminphys(struct buf *); 87 static void adw_isr_callback(ADW_SOFTC *, ADW_SCSI_REQ_Q *); 88 static void adw_async_callback(ADW_SOFTC *, u_int8_t); 89 90 static void adw_print_info(ADW_SOFTC *, int); 91 92 static int adw_poll(ADW_SOFTC *, struct scsipi_xfer *, int); 93 static void adw_timeout(void *); 94 static void adw_reset_bus(ADW_SOFTC *); 95 96 97 /******************************************************************************/ 98 /* DMA Mapping for Control Blocks */ 99 /******************************************************************************/ 100 101 102 static int 103 adw_alloc_controls(ADW_SOFTC *sc) 104 { 105 bus_dma_segment_t seg; 106 int error, rseg; 107 108 /* 109 * Allocate the control structure. 110 */ 111 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adw_control), 112 PAGE_SIZE, 0, &seg, 1, &rseg, 113 BUS_DMA_NOWAIT)) != 0) { 114 printf("%s: unable to allocate control structures," 115 " error = %d\n", sc->sc_dev.dv_xname, error); 116 return (error); 117 } 118 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 119 sizeof(struct adw_control), (caddr_t *) & sc->sc_control, 120 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 121 printf("%s: unable to map control structures, error = %d\n", 122 sc->sc_dev.dv_xname, error); 123 return (error); 124 } 125 126 /* 127 * Create and load the DMA map used for the control blocks. 128 */ 129 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adw_control), 130 1, sizeof(struct adw_control), 0, BUS_DMA_NOWAIT, 131 &sc->sc_dmamap_control)) != 0) { 132 printf("%s: unable to create control DMA map, error = %d\n", 133 sc->sc_dev.dv_xname, error); 134 return (error); 135 } 136 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 137 sc->sc_control, sizeof(struct adw_control), NULL, 138 BUS_DMA_NOWAIT)) != 0) { 139 printf("%s: unable to load control DMA map, error = %d\n", 140 sc->sc_dev.dv_xname, error); 141 return (error); 142 } 143 144 return (0); 145 } 146 147 148 static int 149 adw_alloc_carriers(ADW_SOFTC *sc) 150 { 151 bus_dma_segment_t seg; 152 int error, rseg; 153 154 /* 155 * Allocate the control structure. 156 */ 157 sc->sc_control->carriers = malloc(sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 158 M_DEVBUF, M_WAITOK); 159 if(!sc->sc_control->carriers) { 160 printf("%s: malloc() failed in allocating carrier structures\n", 161 sc->sc_dev.dv_xname); 162 return (ENOMEM); 163 } 164 165 if ((error = bus_dmamem_alloc(sc->sc_dmat, 166 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 167 0x10, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 168 printf("%s: unable to allocate carrier structures," 169 " error = %d\n", sc->sc_dev.dv_xname, error); 170 return (error); 171 } 172 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 173 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 174 (caddr_t *) &sc->sc_control->carriers, 175 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 176 printf("%s: unable to map carrier structures," 177 " error = %d\n", sc->sc_dev.dv_xname, error); 178 return (error); 179 } 180 181 /* 182 * Create and load the DMA map used for the control blocks. 183 */ 184 if ((error = bus_dmamap_create(sc->sc_dmat, 185 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 1, 186 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 0,BUS_DMA_NOWAIT, 187 &sc->sc_dmamap_carrier)) != 0) { 188 printf("%s: unable to create carriers DMA map," 189 " error = %d\n", sc->sc_dev.dv_xname, error); 190 return (error); 191 } 192 if ((error = bus_dmamap_load(sc->sc_dmat, 193 sc->sc_dmamap_carrier, sc->sc_control->carriers, 194 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, NULL, 195 BUS_DMA_NOWAIT)) != 0) { 196 printf("%s: unable to load carriers DMA map," 197 " error = %d\n", sc->sc_dev.dv_xname, error); 198 return (error); 199 } 200 201 return (0); 202 } 203 204 205 /******************************************************************************/ 206 /* Control Blocks routines */ 207 /******************************************************************************/ 208 209 210 /* 211 * Create a set of ccbs and add them to the free list. Called once 212 * by adw_init(). We return the number of CCBs successfully created. 213 */ 214 static int 215 adw_create_ccbs(ADW_SOFTC *sc, ADW_CCB *ccbstore, int count) 216 { 217 ADW_CCB *ccb; 218 int i, error; 219 220 for (i = 0; i < count; i++) { 221 ccb = &ccbstore[i]; 222 if ((error = adw_init_ccb(sc, ccb)) != 0) { 223 printf("%s: unable to initialize ccb, error = %d\n", 224 sc->sc_dev.dv_xname, error); 225 return (i); 226 } 227 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 228 } 229 230 return (i); 231 } 232 233 234 /* 235 * A ccb is put onto the free list. 236 */ 237 static void 238 adw_free_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 239 { 240 int s; 241 242 s = splbio(); 243 244 adw_reset_ccb(ccb); 245 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 246 247 splx(s); 248 } 249 250 251 static void 252 adw_reset_ccb(ADW_CCB *ccb) 253 { 254 255 ccb->flags = 0; 256 } 257 258 259 static int 260 adw_init_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 261 { 262 int hashnum, error; 263 264 /* 265 * Create the DMA map for this CCB. 266 */ 267 error = bus_dmamap_create(sc->sc_dmat, 268 (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 269 ADW_MAX_SG_LIST, (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 270 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 271 if (error) { 272 printf("%s: unable to create CCB DMA map, error = %d\n", 273 sc->sc_dev.dv_xname, error); 274 return (error); 275 } 276 277 /* 278 * put in the phystokv hash table 279 * Never gets taken out. 280 */ 281 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 282 ADW_CCB_OFF(ccb); 283 hashnum = CCB_HASH(ccb->hashkey); 284 ccb->nexthash = sc->sc_ccbhash[hashnum]; 285 sc->sc_ccbhash[hashnum] = ccb; 286 adw_reset_ccb(ccb); 287 return (0); 288 } 289 290 291 /* 292 * Get a free ccb 293 * 294 * If there are none, see if we can allocate a new one 295 */ 296 static ADW_CCB * 297 adw_get_ccb(ADW_SOFTC *sc) 298 { 299 ADW_CCB *ccb = 0; 300 int s; 301 302 s = splbio(); 303 304 ccb = sc->sc_free_ccb.tqh_first; 305 if (ccb != NULL) { 306 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 307 ccb->flags |= CCB_ALLOC; 308 } 309 splx(s); 310 return (ccb); 311 } 312 313 314 /* 315 * Given a physical address, find the ccb that it corresponds to. 316 */ 317 ADW_CCB * 318 adw_ccb_phys_kv(ADW_SOFTC *sc, u_int32_t ccb_phys) 319 { 320 int hashnum = CCB_HASH(ccb_phys); 321 ADW_CCB *ccb = sc->sc_ccbhash[hashnum]; 322 323 while (ccb) { 324 if (ccb->hashkey == ccb_phys) 325 break; 326 ccb = ccb->nexthash; 327 } 328 return (ccb); 329 } 330 331 332 /* 333 * Queue a CCB to be sent to the controller, and send it if possible. 334 */ 335 static int 336 adw_queue_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 337 { 338 int errcode = ADW_SUCCESS; 339 340 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 341 342 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 343 344 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 345 errcode = AdwExeScsiQueue(sc, &ccb->scsiq); 346 switch(errcode) { 347 case ADW_SUCCESS: 348 break; 349 350 case ADW_BUSY: 351 printf("ADW_BUSY\n"); 352 return(ADW_BUSY); 353 354 case ADW_ERROR: 355 printf("ADW_ERROR\n"); 356 return(ADW_ERROR); 357 } 358 359 TAILQ_INSERT_TAIL(&sc->sc_pending_ccb, ccb, chain); 360 361 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 362 callout_reset(&ccb->xs->xs_callout, 363 (ccb->timeout * hz) / 1000, adw_timeout, ccb); 364 } 365 366 return(errcode); 367 } 368 369 370 /******************************************************************************/ 371 /* SCSI layer interfacing routines */ 372 /******************************************************************************/ 373 374 375 int 376 adw_init(ADW_SOFTC *sc) 377 { 378 u_int16_t warn_code; 379 380 381 sc->cfg.lib_version = (ADW_LIB_VERSION_MAJOR << 8) | 382 ADW_LIB_VERSION_MINOR; 383 sc->cfg.chip_version = 384 ADW_GET_CHIP_VERSION(sc->sc_iot, sc->sc_ioh, sc->bus_type); 385 386 /* 387 * Reset the chip to start and allow register writes. 388 */ 389 if (ADW_FIND_SIGNATURE(sc->sc_iot, sc->sc_ioh) == 0) { 390 panic("adw_init: adw_find_signature failed"); 391 } else { 392 AdwResetChip(sc->sc_iot, sc->sc_ioh); 393 394 warn_code = AdwInitFromEEPROM(sc); 395 396 if (warn_code & ADW_WARN_EEPROM_CHKSUM) 397 printf("%s: Bad checksum found. " 398 "Setting default values\n", 399 sc->sc_dev.dv_xname); 400 if (warn_code & ADW_WARN_EEPROM_TERMINATION) 401 printf("%s: Bad bus termination setting." 402 "Using automatic termination.\n", 403 sc->sc_dev.dv_xname); 404 } 405 406 sc->isr_callback = (ADW_CALLBACK) adw_isr_callback; 407 sc->async_callback = (ADW_CALLBACK) adw_async_callback; 408 409 return 0; 410 } 411 412 413 void 414 adw_attach(ADW_SOFTC *sc) 415 { 416 struct scsipi_adapter *adapt = &sc->sc_adapter; 417 struct scsipi_channel *chan = &sc->sc_channel; 418 int ncontrols, error; 419 420 TAILQ_INIT(&sc->sc_free_ccb); 421 TAILQ_INIT(&sc->sc_waiting_ccb); 422 TAILQ_INIT(&sc->sc_pending_ccb); 423 424 /* 425 * Allocate the Control Blocks. 426 */ 427 error = adw_alloc_controls(sc); 428 if (error) 429 return; /* (error) */ ; 430 431 bzero(sc->sc_control, sizeof(struct adw_control)); 432 433 /* 434 * Create and initialize the Control Blocks. 435 */ 436 ncontrols = adw_create_ccbs(sc, sc->sc_control->ccbs, ADW_MAX_CCB); 437 if (ncontrols == 0) { 438 printf("%s: unable to create Control Blocks\n", 439 sc->sc_dev.dv_xname); 440 return; /* (ENOMEM) */ ; 441 } else if (ncontrols != ADW_MAX_CCB) { 442 printf("%s: WARNING: only %d of %d Control Blocks" 443 " created\n", 444 sc->sc_dev.dv_xname, ncontrols, ADW_MAX_CCB); 445 } 446 447 /* 448 * Create and initialize the Carriers. 449 */ 450 error = adw_alloc_carriers(sc); 451 if (error) 452 return; /* (error) */ ; 453 454 /* 455 * Zero's the freeze_device status 456 */ 457 bzero(sc->sc_freeze_dev, sizeof(sc->sc_freeze_dev)); 458 459 /* 460 * Initialize the adapter 461 */ 462 switch (AdwInitDriver(sc)) { 463 case ADW_IERR_BIST_PRE_TEST: 464 panic("%s: BIST pre-test error", 465 sc->sc_dev.dv_xname); 466 break; 467 468 case ADW_IERR_BIST_RAM_TEST: 469 panic("%s: BIST RAM test error", 470 sc->sc_dev.dv_xname); 471 break; 472 473 case ADW_IERR_MCODE_CHKSUM: 474 panic("%s: Microcode checksum error", 475 sc->sc_dev.dv_xname); 476 break; 477 478 case ADW_IERR_ILLEGAL_CONNECTION: 479 panic("%s: All three connectors are in use", 480 sc->sc_dev.dv_xname); 481 break; 482 483 case ADW_IERR_REVERSED_CABLE: 484 panic("%s: Cable is reversed", 485 sc->sc_dev.dv_xname); 486 break; 487 488 case ADW_IERR_HVD_DEVICE: 489 panic("%s: HVD attached to LVD connector", 490 sc->sc_dev.dv_xname); 491 break; 492 493 case ADW_IERR_SINGLE_END_DEVICE: 494 panic("%s: single-ended device is attached to" 495 " one of the connectors", 496 sc->sc_dev.dv_xname); 497 break; 498 499 case ADW_IERR_NO_CARRIER: 500 panic("%s: unable to create Carriers", 501 sc->sc_dev.dv_xname); 502 break; 503 504 case ADW_WARN_BUSRESET_ERROR: 505 printf("%s: WARNING: Bus Reset Error\n", 506 sc->sc_dev.dv_xname); 507 break; 508 } 509 510 /* 511 * Fill in the scsipi_adapter. 512 */ 513 memset(adapt, 0, sizeof(*adapt)); 514 adapt->adapt_dev = &sc->sc_dev; 515 adapt->adapt_nchannels = 1; 516 adapt->adapt_openings = ncontrols; 517 adapt->adapt_max_periph = adapt->adapt_openings; 518 adapt->adapt_request = adw_scsipi_request; 519 adapt->adapt_minphys = adwminphys; 520 521 /* 522 * Fill in the scsipi_channel. 523 */ 524 memset(chan, 0, sizeof(*chan)); 525 chan->chan_adapter = adapt; 526 chan->chan_bustype = &scsi_bustype; 527 chan->chan_channel = 0; 528 chan->chan_ntargets = ADW_MAX_TID + 1; 529 chan->chan_nluns = 7; 530 chan->chan_id = sc->chip_scsi_id; 531 532 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 533 } 534 535 536 static void 537 adwminphys(struct buf *bp) 538 { 539 540 if (bp->b_bcount > ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE)) 541 bp->b_bcount = ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE); 542 minphys(bp); 543 } 544 545 546 /* 547 * start a scsi operation given the command and the data address. 548 * Also needs the unit, target and lu. 549 */ 550 static void 551 adw_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 552 void *arg) 553 { 554 struct scsipi_xfer *xs; 555 ADW_SOFTC *sc = (void *)chan->chan_adapter->adapt_dev; 556 ADW_CCB *ccb; 557 int s, retry; 558 559 switch (req) { 560 case ADAPTER_REQ_RUN_XFER: 561 xs = arg; 562 563 /* 564 * get a ccb to use. If the transfer 565 * is from a buf (possibly from interrupt time) 566 * then we can't allow it to sleep 567 */ 568 569 ccb = adw_get_ccb(sc); 570 #ifdef DIAGNOSTIC 571 /* 572 * This should never happen as we track the resources 573 * in the mid-layer. 574 */ 575 if (ccb == NULL) { 576 scsipi_printaddr(xs->xs_periph); 577 printf("unable to allocate ccb\n"); 578 panic("adw_scsipi_request"); 579 } 580 #endif 581 582 ccb->xs = xs; 583 ccb->timeout = xs->timeout; 584 585 if (adw_build_req(sc, ccb)) { 586 s = splbio(); 587 retry = adw_queue_ccb(sc, ccb); 588 splx(s); 589 590 switch(retry) { 591 case ADW_BUSY: 592 xs->error = XS_RESOURCE_SHORTAGE; 593 adw_free_ccb(sc, ccb); 594 scsipi_done(xs); 595 return; 596 597 case ADW_ERROR: 598 xs->error = XS_DRIVER_STUFFUP; 599 adw_free_ccb(sc, ccb); 600 scsipi_done(xs); 601 return; 602 } 603 if ((xs->xs_control & XS_CTL_POLL) == 0) 604 return; 605 /* 606 * Not allowed to use interrupts, poll for completion. 607 */ 608 if (adw_poll(sc, xs, ccb->timeout)) { 609 adw_timeout(ccb); 610 if (adw_poll(sc, xs, ccb->timeout)) 611 adw_timeout(ccb); 612 } 613 } 614 return; 615 616 case ADAPTER_REQ_GROW_RESOURCES: 617 /* XXX Not supported. */ 618 return; 619 620 case ADAPTER_REQ_SET_XFER_MODE: 621 /* XXX XXX XXX */ 622 return; 623 } 624 } 625 626 627 /* 628 * Build a request structure for the Wide Boards. 629 */ 630 static int 631 adw_build_req(ADW_SOFTC *sc, ADW_CCB *ccb) 632 { 633 struct scsipi_xfer *xs = ccb->xs; 634 struct scsipi_periph *periph = xs->xs_periph; 635 bus_dma_tag_t dmat = sc->sc_dmat; 636 ADW_SCSI_REQ_Q *scsiqp; 637 int error; 638 639 scsiqp = &ccb->scsiq; 640 bzero(scsiqp, sizeof(ADW_SCSI_REQ_Q)); 641 642 /* 643 * Set the ADW_SCSI_REQ_Q 'ccb_ptr' to point to the 644 * physical CCB structure. 645 */ 646 scsiqp->ccb_ptr = ccb->hashkey; 647 648 /* 649 * Build the ADW_SCSI_REQ_Q request. 650 */ 651 652 /* 653 * Set CDB length and copy it to the request structure. 654 * For wide boards a CDB length maximum of 16 bytes 655 * is supported. 656 */ 657 bcopy(xs->cmd, &scsiqp->cdb, ((scsiqp->cdb_len = xs->cmdlen) <= 12)? 658 xs->cmdlen : 12 ); 659 if(xs->cmdlen > 12) 660 bcopy(&(xs->cmd[12]), &scsiqp->cdb16, xs->cmdlen - 12); 661 662 scsiqp->target_id = periph->periph_target; 663 scsiqp->target_lun = periph->periph_lun; 664 665 scsiqp->vsense_addr = &ccb->scsi_sense; 666 scsiqp->sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 667 ADW_CCB_OFF(ccb) + offsetof(struct adw_ccb, scsi_sense); 668 scsiqp->sense_len = sizeof(struct scsipi_sense_data); 669 670 /* 671 * Build ADW_SCSI_REQ_Q for a scatter-gather buffer command. 672 */ 673 if (xs->datalen) { 674 /* 675 * Map the DMA transfer. 676 */ 677 #ifdef TFS 678 if (xs->xs_control & SCSI_DATA_UIO) { 679 error = bus_dmamap_load_uio(dmat, 680 ccb->dmamap_xfer, (struct uio *) xs->data, 681 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 682 BUS_DMA_WAITOK) | BUS_DMA_STREAMING); 683 } else 684 #endif /* TFS */ 685 { 686 error = bus_dmamap_load(dmat, 687 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 688 ((xs->xs_control & XS_CTL_NOSLEEP) ? 689 BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | 690 BUS_DMA_STREAMING); 691 } 692 693 switch (error) { 694 case 0: 695 break; 696 case ENOMEM: 697 case EAGAIN: 698 xs->error = XS_RESOURCE_SHORTAGE; 699 goto out_bad; 700 701 default: 702 xs->error = XS_DRIVER_STUFFUP; 703 printf("%s: error %d loading DMA map\n", 704 sc->sc_dev.dv_xname, error); 705 out_bad: 706 adw_free_ccb(sc, ccb); 707 scsipi_done(xs); 708 return(0); 709 } 710 711 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 712 ccb->dmamap_xfer->dm_mapsize, 713 (xs->xs_control & XS_CTL_DATA_IN) ? 714 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 715 716 /* 717 * Build scatter-gather list. 718 */ 719 scsiqp->data_cnt = xs->datalen; 720 scsiqp->vdata_addr = xs->data; 721 scsiqp->data_addr = ccb->dmamap_xfer->dm_segs[0].ds_addr; 722 bzero(ccb->sg_block, sizeof(ADW_SG_BLOCK) * ADW_NUM_SG_BLOCK); 723 adw_build_sglist(ccb, scsiqp, ccb->sg_block); 724 } else { 725 /* 726 * No data xfer, use non S/G values. 727 */ 728 scsiqp->data_cnt = 0; 729 scsiqp->vdata_addr = 0; 730 scsiqp->data_addr = 0; 731 } 732 733 return (1); 734 } 735 736 737 /* 738 * Build scatter-gather list for Wide Boards. 739 */ 740 static void 741 adw_build_sglist(ADW_CCB *ccb, ADW_SCSI_REQ_Q *scsiqp, ADW_SG_BLOCK *sg_block) 742 { 743 u_long sg_block_next_addr; /* block and its next */ 744 u_int32_t sg_block_physical_addr; 745 int i; /* how many SG entries */ 746 bus_dma_segment_t *sg_list = &ccb->dmamap_xfer->dm_segs[0]; 747 int sg_elem_cnt = ccb->dmamap_xfer->dm_nsegs; 748 749 750 sg_block_next_addr = (u_long) sg_block; /* allow math operation */ 751 sg_block_physical_addr = ccb->hashkey + 752 offsetof(struct adw_ccb, sg_block[0]); 753 scsiqp->sg_real_addr = sg_block_physical_addr; 754 755 /* 756 * If there are more than NO_OF_SG_PER_BLOCK dma segments (hw sg-list) 757 * then split the request into multiple sg-list blocks. 758 */ 759 760 do { 761 for (i = 0; i < NO_OF_SG_PER_BLOCK; i++) { 762 sg_block->sg_list[i].sg_addr = sg_list->ds_addr; 763 sg_block->sg_list[i].sg_count = sg_list->ds_len; 764 765 if (--sg_elem_cnt == 0) { 766 /* last entry, get out */ 767 sg_block->sg_cnt = i + 1; 768 sg_block->sg_ptr = NULL; /* next link = NULL */ 769 return; 770 } 771 sg_list++; 772 } 773 sg_block_next_addr += sizeof(ADW_SG_BLOCK); 774 sg_block_physical_addr += sizeof(ADW_SG_BLOCK); 775 776 sg_block->sg_cnt = NO_OF_SG_PER_BLOCK; 777 sg_block->sg_ptr = sg_block_physical_addr; 778 sg_block = (ADW_SG_BLOCK *) sg_block_next_addr; /* virt. addr */ 779 } while (1); 780 } 781 782 783 /******************************************************************************/ 784 /* Interrupts and TimeOut routines */ 785 /******************************************************************************/ 786 787 788 int 789 adw_intr(void *arg) 790 { 791 ADW_SOFTC *sc = arg; 792 793 794 if(AdwISR(sc) != ADW_FALSE) { 795 return (1); 796 } 797 798 return (0); 799 } 800 801 802 /* 803 * Poll a particular unit, looking for a particular xs 804 */ 805 static int 806 adw_poll(ADW_SOFTC *sc, struct scsipi_xfer *xs, int count) 807 { 808 809 /* timeouts are in msec, so we loop in 1000 usec cycles */ 810 while (count) { 811 adw_intr(sc); 812 if (xs->xs_status & XS_STS_DONE) 813 return (0); 814 delay(1000); /* only happens in boot so ok */ 815 count--; 816 } 817 return (1); 818 } 819 820 821 static void 822 adw_timeout(void *arg) 823 { 824 ADW_CCB *ccb = arg; 825 struct scsipi_xfer *xs = ccb->xs; 826 struct scsipi_periph *periph = xs->xs_periph; 827 ADW_SOFTC *sc = 828 (void *)periph->periph_channel->chan_adapter->adapt_dev; 829 int s; 830 831 scsipi_printaddr(periph); 832 printf("timed out"); 833 834 s = splbio(); 835 836 if (ccb->flags & CCB_ABORTED) { 837 /* 838 * Abort Timed Out 839 * 840 * No more opportunities. Lets try resetting the bus and 841 * reinitialize the host adapter. 842 */ 843 callout_stop(&xs->xs_callout); 844 printf(" AGAIN. Resetting SCSI Bus\n"); 845 adw_reset_bus(sc); 846 splx(s); 847 return; 848 } else if (ccb->flags & CCB_ABORTING) { 849 /* 850 * Abort the operation that has timed out. 851 * 852 * Second opportunity. 853 */ 854 printf("\n"); 855 xs->error = XS_TIMEOUT; 856 ccb->flags |= CCB_ABORTED; 857 #if 0 858 /* 859 * - XXX - 3.3a microcode is BROKEN!!! 860 * 861 * We cannot abort a CCB, so we can only hope the command 862 * get completed before the next timeout, otherwise a 863 * Bus Reset will arrive inexorably. 864 */ 865 /* 866 * ADW_ABORT_CCB() makes the board to generate an interrupt 867 * 868 * - XXX - The above assertion MUST be verified (and this 869 * code changed as well [callout_*()]), when the 870 * ADW_ABORT_CCB will be working again 871 */ 872 ADW_ABORT_CCB(sc, ccb); 873 #endif 874 /* 875 * waiting for multishot callout_reset() let's restart it 876 * by hand so the next time a timeout event will occour 877 * we will reset the bus. 878 */ 879 callout_reset(&xs->xs_callout, 880 (ccb->timeout * hz) / 1000, adw_timeout, ccb); 881 } else { 882 /* 883 * Abort the operation that has timed out. 884 * 885 * First opportunity. 886 */ 887 printf("\n"); 888 xs->error = XS_TIMEOUT; 889 ccb->flags |= CCB_ABORTING; 890 #if 0 891 /* 892 * - XXX - 3.3a microcode is BROKEN!!! 893 * 894 * We cannot abort a CCB, so we can only hope the command 895 * get completed before the next 2 timeout, otherwise a 896 * Bus Reset will arrive inexorably. 897 */ 898 /* 899 * ADW_ABORT_CCB() makes the board to generate an interrupt 900 * 901 * - XXX - The above assertion MUST be verified (and this 902 * code changed as well [callout_*()]), when the 903 * ADW_ABORT_CCB will be working again 904 */ 905 ADW_ABORT_CCB(sc, ccb); 906 #endif 907 /* 908 * waiting for multishot callout_reset() let's restart it 909 * by hand so to give a second opportunity to the command 910 * which timed-out. 911 */ 912 callout_reset(&xs->xs_callout, 913 (ccb->timeout * hz) / 1000, adw_timeout, ccb); 914 } 915 916 splx(s); 917 } 918 919 920 static void 921 adw_reset_bus(ADW_SOFTC *sc) 922 { 923 ADW_CCB *ccb; 924 int s; 925 struct scsipi_xfer *xs; 926 927 s = splbio(); 928 AdwResetSCSIBus(sc); 929 while((ccb = TAILQ_LAST(&sc->sc_pending_ccb, 930 adw_pending_ccb)) != NULL) { 931 callout_stop(&ccb->xs->xs_callout); 932 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 933 xs = ccb->xs; 934 adw_free_ccb(sc, ccb); 935 xs->error = XS_RESOURCE_SHORTAGE; 936 scsipi_done(xs); 937 } 938 splx(s); 939 } 940 941 942 /******************************************************************************/ 943 /* Host Adapter and Peripherals Information Routines */ 944 /******************************************************************************/ 945 946 947 static void 948 adw_print_info(ADW_SOFTC *sc, int tid) 949 { 950 bus_space_tag_t iot = sc->sc_iot; 951 bus_space_handle_t ioh = sc->sc_ioh; 952 u_int16_t wdtr_able, wdtr_done, wdtr; 953 u_int16_t sdtr_able, sdtr_done, sdtr, period; 954 static int wdtr_reneg = 0, sdtr_reneg = 0; 955 956 if (tid == 0){ 957 wdtr_reneg = sdtr_reneg = 0; 958 } 959 960 printf("%s: target %d ", sc->sc_dev.dv_xname, tid); 961 962 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, wdtr_able); 963 if(wdtr_able & ADW_TID_TO_TIDMASK(tid)) { 964 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, wdtr_done); 965 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + 966 (2 * tid), wdtr); 967 printf("using %d-bits wide, ", (wdtr & 0x8000)? 16 : 8); 968 if((wdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) 969 wdtr_reneg = 1; 970 } else { 971 printf("wide transfers disabled, "); 972 } 973 974 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, sdtr_able); 975 if(sdtr_able & ADW_TID_TO_TIDMASK(tid)) { 976 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, sdtr_done); 977 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + 978 (2 * tid), sdtr); 979 sdtr &= ~0x8000; 980 if((sdtr & 0x1F) != 0) { 981 if((sdtr & 0x1F00) == 0x1100){ 982 printf("80.0 MHz"); 983 } else if((sdtr & 0x1F00) == 0x1000){ 984 printf("40.0 MHz"); 985 } else { 986 /* <= 20.0 MHz */ 987 period = (((sdtr >> 8) * 25) + 50)/4; 988 if(period == 0) { 989 /* Should never happen. */ 990 printf("? MHz"); 991 } else { 992 printf("%d.%d MHz", 250/period, 993 ADW_TENTHS(250, period)); 994 } 995 } 996 printf(" synchronous transfers\n"); 997 } else { 998 printf("asynchronous transfers\n"); 999 } 1000 if((sdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) 1001 sdtr_reneg = 1; 1002 } else { 1003 printf("synchronous transfers disabled\n"); 1004 } 1005 1006 if(wdtr_reneg || sdtr_reneg) { 1007 printf("%s: target %d %s", sc->sc_dev.dv_xname, tid, 1008 (wdtr_reneg)? ((sdtr_reneg)? "wide/sync" : "wide") : 1009 ((sdtr_reneg)? "sync" : "") ); 1010 printf(" renegotiation pending before next command.\n"); 1011 } 1012 } 1013 1014 1015 /******************************************************************************/ 1016 /* WIDE boards Interrupt callbacks */ 1017 /******************************************************************************/ 1018 1019 1020 /* 1021 * adw_isr_callback() - Second Level Interrupt Handler called by AdwISR() 1022 * 1023 * Interrupt callback function for the Wide SCSI Adv Library. 1024 * 1025 * Notice: 1026 * Interrupts are disabled by the caller (AdwISR() function), and will be 1027 * enabled at the end of the caller. 1028 */ 1029 static void 1030 adw_isr_callback(ADW_SOFTC *sc, ADW_SCSI_REQ_Q *scsiq) 1031 { 1032 bus_dma_tag_t dmat = sc->sc_dmat; 1033 ADW_CCB *ccb; 1034 struct scsipi_xfer *xs; 1035 struct scsipi_sense_data *s1, *s2; 1036 1037 1038 ccb = adw_ccb_phys_kv(sc, scsiq->ccb_ptr); 1039 1040 callout_stop(&ccb->xs->xs_callout); 1041 1042 xs = ccb->xs; 1043 1044 /* 1045 * If we were a data transfer, unload the map that described 1046 * the data buffer. 1047 */ 1048 if (xs->datalen) { 1049 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 1050 ccb->dmamap_xfer->dm_mapsize, 1051 (xs->xs_control & XS_CTL_DATA_IN) ? 1052 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1053 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 1054 } 1055 1056 if ((ccb->flags & CCB_ALLOC) == 0) { 1057 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 1058 Debugger(); 1059 return; 1060 } 1061 1062 /* 1063 * 'done_status' contains the command's ending status. 1064 * 'host_status' conatins the host adapter status. 1065 * 'scsi_status' contains the scsi peripheral status. 1066 */ 1067 if ((scsiq->host_status == QHSTA_NO_ERROR) && 1068 ((scsiq->done_status == QD_NO_ERROR) || 1069 (scsiq->done_status == QD_WITH_ERROR))) { 1070 switch (scsiq->host_status) { 1071 case SCSI_STATUS_GOOD: 1072 if ((scsiq->cdb[0] == INQUIRY) && 1073 (scsiq->target_lun == 0)) { 1074 adw_print_info(sc, scsiq->target_id); 1075 } 1076 xs->error = XS_NOERROR; 1077 xs->resid = scsiq->data_cnt; 1078 sc->sc_freeze_dev[scsiq->target_id] = 0; 1079 break; 1080 1081 case SCSI_STATUS_CHECK_CONDITION: 1082 case SCSI_STATUS_CMD_TERMINATED: 1083 s1 = &ccb->scsi_sense; 1084 s2 = &xs->sense.scsi_sense; 1085 *s2 = *s1; 1086 xs->error = XS_SENSE; 1087 sc->sc_freeze_dev[scsiq->target_id] = 1; 1088 break; 1089 1090 default: 1091 xs->error = XS_BUSY; 1092 sc->sc_freeze_dev[scsiq->target_id] = 1; 1093 break; 1094 } 1095 } else if (scsiq->done_status == QD_ABORTED_BY_HOST) { 1096 xs->error = XS_DRIVER_STUFFUP; 1097 } else { 1098 switch (scsiq->host_status) { 1099 case QHSTA_M_SEL_TIMEOUT: 1100 xs->error = XS_SELTIMEOUT; 1101 break; 1102 1103 case QHSTA_M_SXFR_OFF_UFLW: 1104 case QHSTA_M_SXFR_OFF_OFLW: 1105 case QHSTA_M_DATA_OVER_RUN: 1106 printf("%s: Overrun/Overflow/Underflow condition\n", 1107 sc->sc_dev.dv_xname); 1108 xs->error = XS_DRIVER_STUFFUP; 1109 break; 1110 1111 case QHSTA_M_SXFR_DESELECTED: 1112 case QHSTA_M_UNEXPECTED_BUS_FREE: 1113 printf("%s: Unexpected BUS free\n",sc->sc_dev.dv_xname); 1114 xs->error = XS_DRIVER_STUFFUP; 1115 break; 1116 1117 case QHSTA_M_SCSI_BUS_RESET: 1118 case QHSTA_M_SCSI_BUS_RESET_UNSOL: 1119 printf("%s: BUS Reset\n", sc->sc_dev.dv_xname); 1120 xs->error = XS_DRIVER_STUFFUP; 1121 break; 1122 1123 case QHSTA_M_BUS_DEVICE_RESET: 1124 printf("%s: Device Reset\n", sc->sc_dev.dv_xname); 1125 xs->error = XS_DRIVER_STUFFUP; 1126 break; 1127 1128 case QHSTA_M_QUEUE_ABORTED: 1129 printf("%s: Queue Aborted\n", sc->sc_dev.dv_xname); 1130 xs->error = XS_DRIVER_STUFFUP; 1131 break; 1132 1133 case QHSTA_M_SXFR_SDMA_ERR: 1134 case QHSTA_M_SXFR_SXFR_PERR: 1135 case QHSTA_M_RDMA_PERR: 1136 /* 1137 * DMA Error. This should *NEVER* happen! 1138 * 1139 * Lets try resetting the bus and reinitialize 1140 * the host adapter. 1141 */ 1142 printf("%s: DMA Error. Reseting bus\n", 1143 sc->sc_dev.dv_xname); 1144 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1145 adw_reset_bus(sc); 1146 xs->error = XS_BUSY; 1147 goto done; 1148 1149 case QHSTA_M_WTM_TIMEOUT: 1150 case QHSTA_M_SXFR_WD_TMO: 1151 /* The SCSI bus hung in a phase */ 1152 printf("%s: Watch Dog timer expired. Reseting bus\n", 1153 sc->sc_dev.dv_xname); 1154 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1155 adw_reset_bus(sc); 1156 xs->error = XS_BUSY; 1157 goto done; 1158 1159 case QHSTA_M_SXFR_XFR_PH_ERR: 1160 printf("%s: Transfer Error\n", sc->sc_dev.dv_xname); 1161 xs->error = XS_DRIVER_STUFFUP; 1162 break; 1163 1164 case QHSTA_M_BAD_CMPL_STATUS_IN: 1165 /* No command complete after a status message */ 1166 printf("%s: Bad Completion Status\n", 1167 sc->sc_dev.dv_xname); 1168 xs->error = XS_DRIVER_STUFFUP; 1169 break; 1170 1171 case QHSTA_M_AUTO_REQ_SENSE_FAIL: 1172 printf("%s: Auto Sense Failed\n", sc->sc_dev.dv_xname); 1173 xs->error = XS_DRIVER_STUFFUP; 1174 break; 1175 1176 case QHSTA_M_INVALID_DEVICE: 1177 printf("%s: Invalid Device\n", sc->sc_dev.dv_xname); 1178 xs->error = XS_DRIVER_STUFFUP; 1179 break; 1180 1181 case QHSTA_M_NO_AUTO_REQ_SENSE: 1182 /* 1183 * User didn't request sense, but we got a 1184 * check condition. 1185 */ 1186 printf("%s: Unexpected Check Condition\n", 1187 sc->sc_dev.dv_xname); 1188 xs->error = XS_DRIVER_STUFFUP; 1189 break; 1190 1191 case QHSTA_M_SXFR_UNKNOWN_ERROR: 1192 printf("%s: Unknown Error\n", sc->sc_dev.dv_xname); 1193 xs->error = XS_DRIVER_STUFFUP; 1194 break; 1195 1196 default: 1197 panic("%s: Unhandled Host Status Error %x", 1198 sc->sc_dev.dv_xname, scsiq->host_status); 1199 } 1200 } 1201 1202 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1203 done: adw_free_ccb(sc, ccb); 1204 scsipi_done(xs); 1205 } 1206 1207 1208 /* 1209 * adw_async_callback() - Adv Library asynchronous event callback function. 1210 */ 1211 static void 1212 adw_async_callback(ADW_SOFTC *sc, u_int8_t code) 1213 { 1214 switch (code) { 1215 case ADV_ASYNC_SCSI_BUS_RESET_DET: 1216 /* The firmware detected a SCSI Bus reset. */ 1217 printf("%s: SCSI Bus reset detected\n", sc->sc_dev.dv_xname); 1218 break; 1219 1220 case ADV_ASYNC_RDMA_FAILURE: 1221 /* 1222 * Handle RDMA failure by resetting the SCSI Bus and 1223 * possibly the chip if it is unresponsive. 1224 */ 1225 printf("%s: RDMA failure. Resetting the SCSI Bus and" 1226 " the adapter\n", sc->sc_dev.dv_xname); 1227 AdwResetSCSIBus(sc); 1228 break; 1229 1230 case ADV_HOST_SCSI_BUS_RESET: 1231 /* Host generated SCSI bus reset occurred. */ 1232 printf("%s: Host generated SCSI bus reset occurred\n", 1233 sc->sc_dev.dv_xname); 1234 break; 1235 1236 case ADV_ASYNC_CARRIER_READY_FAILURE: 1237 /* Carrier Ready failure. */ 1238 printf("%s: Carrier Ready failure!\n", sc->sc_dev.dv_xname); 1239 break; 1240 1241 default: 1242 break; 1243 } 1244 } 1245
Indexes created Fri Sep 26 20:09:58 GMT 2025