adw.c revision 1.49.4.1
1 /* $NetBSD: adw.c,v 1.49.4.1 2010/03/11 15:03:27 yamt 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/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: adw.c,v 1.49.4.1 2010/03/11 15:03:27 yamt Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/callout.h> 46 #include <sys/kernel.h> 47 #include <sys/errno.h> 48 #include <sys/ioctl.h> 49 #include <sys/device.h> 50 #include <sys/malloc.h> 51 #include <sys/buf.h> 52 #include <sys/proc.h> 53 54 #include <sys/bus.h> 55 #include <sys/intr.h> 56 57 #include <uvm/uvm_extern.h> 58 59 #include <dev/scsipi/scsi_all.h> 60 #include <dev/scsipi/scsipi_all.h> 61 #include <dev/scsipi/scsiconf.h> 62 63 #include <dev/ic/adwlib.h> 64 #include <dev/ic/adwmcode.h> 65 #include <dev/ic/adw.h> 66 67 #ifndef DDB 68 #define Debugger() panic("should call debugger here (adw.c)") 69 #endif /* ! DDB */ 70 71 /******************************************************************************/ 72 73 74 static int adw_alloc_controls(ADW_SOFTC *); 75 static int adw_alloc_carriers(ADW_SOFTC *); 76 static int adw_create_ccbs(ADW_SOFTC *, ADW_CCB *, int); 77 static void adw_free_ccb(ADW_SOFTC *, ADW_CCB *); 78 static void adw_reset_ccb(ADW_CCB *); 79 static int adw_init_ccb(ADW_SOFTC *, ADW_CCB *); 80 static ADW_CCB *adw_get_ccb(ADW_SOFTC *); 81 static int adw_queue_ccb(ADW_SOFTC *, ADW_CCB *); 82 83 static void adw_scsipi_request(struct scsipi_channel *, 84 scsipi_adapter_req_t, void *); 85 static int adw_build_req(ADW_SOFTC *, ADW_CCB *); 86 static void adw_build_sglist(ADW_CCB *, ADW_SCSI_REQ_Q *, ADW_SG_BLOCK *); 87 static void adwminphys(struct buf *); 88 static void adw_isr_callback(ADW_SOFTC *, ADW_SCSI_REQ_Q *); 89 static void adw_async_callback(ADW_SOFTC *, u_int8_t); 90 91 static void adw_print_info(ADW_SOFTC *, int); 92 93 static int adw_poll(ADW_SOFTC *, struct scsipi_xfer *, int); 94 static void adw_timeout(void *); 95 static void adw_reset_bus(ADW_SOFTC *); 96 97 98 /******************************************************************************/ 99 /* DMA Mapping for Control Blocks */ 100 /******************************************************************************/ 101 102 103 static int 104 adw_alloc_controls(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 aprint_error_dev(&sc->sc_dev, "unable to allocate control structures," 116 " error = %d\n", error); 117 return (error); 118 } 119 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 120 sizeof(struct adw_control), (void **) & sc->sc_control, 121 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 122 aprint_error_dev(&sc->sc_dev, "unable to map control structures, error = %d\n", 123 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 aprint_error_dev(&sc->sc_dev, "unable to create control DMA map, error = %d\n", 134 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 aprint_error_dev(&sc->sc_dev, "unable to load control DMA map, error = %d\n", 141 error); 142 return (error); 143 } 144 145 return (0); 146 } 147 148 149 static int 150 adw_alloc_carriers(ADW_SOFTC *sc) 151 { 152 bus_dma_segment_t seg; 153 int error, rseg; 154 155 /* 156 * Allocate the control structure. 157 */ 158 sc->sc_control->carriers = malloc(sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 159 M_DEVBUF, M_WAITOK); 160 if(!sc->sc_control->carriers) { 161 aprint_error_dev(&sc->sc_dev, 162 "malloc() failed in allocating carrier structures\n"); 163 return (ENOMEM); 164 } 165 166 if ((error = bus_dmamem_alloc(sc->sc_dmat, 167 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 168 0x10, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 169 aprint_error_dev(&sc->sc_dev, "unable to allocate carrier structures," 170 " error = %d\n", error); 171 return (error); 172 } 173 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 174 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 175 (void **) &sc->sc_control->carriers, 176 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 177 aprint_error_dev(&sc->sc_dev, "unable to map carrier structures," 178 " error = %d\n", error); 179 return (error); 180 } 181 182 /* 183 * Create and load the DMA map used for the control blocks. 184 */ 185 if ((error = bus_dmamap_create(sc->sc_dmat, 186 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 1, 187 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 0,BUS_DMA_NOWAIT, 188 &sc->sc_dmamap_carrier)) != 0) { 189 aprint_error_dev(&sc->sc_dev, "unable to create carriers DMA map," 190 " error = %d\n", error); 191 return (error); 192 } 193 if ((error = bus_dmamap_load(sc->sc_dmat, 194 sc->sc_dmamap_carrier, sc->sc_control->carriers, 195 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, NULL, 196 BUS_DMA_NOWAIT)) != 0) { 197 aprint_error_dev(&sc->sc_dev, "unable to load carriers DMA map," 198 " error = %d\n", error); 199 return (error); 200 } 201 202 return (0); 203 } 204 205 206 /******************************************************************************/ 207 /* Control Blocks routines */ 208 /******************************************************************************/ 209 210 211 /* 212 * Create a set of ccbs and add them to the free list. Called once 213 * by adw_init(). We return the number of CCBs successfully created. 214 */ 215 static int 216 adw_create_ccbs(ADW_SOFTC *sc, ADW_CCB *ccbstore, int count) 217 { 218 ADW_CCB *ccb; 219 int i, error; 220 221 for (i = 0; i < count; i++) { 222 ccb = &ccbstore[i]; 223 if ((error = adw_init_ccb(sc, ccb)) != 0) { 224 aprint_error_dev(&sc->sc_dev, "unable to initialize ccb, error = %d\n", 225 error); 226 return (i); 227 } 228 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 229 } 230 231 return (i); 232 } 233 234 235 /* 236 * A ccb is put onto the free list. 237 */ 238 static void 239 adw_free_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 240 { 241 int s; 242 243 s = splbio(); 244 245 adw_reset_ccb(ccb); 246 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 247 248 splx(s); 249 } 250 251 252 static void 253 adw_reset_ccb(ADW_CCB *ccb) 254 { 255 256 ccb->flags = 0; 257 } 258 259 260 static int 261 adw_init_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 262 { 263 int hashnum, error; 264 265 /* 266 * Create the DMA map for this CCB. 267 */ 268 error = bus_dmamap_create(sc->sc_dmat, 269 (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 270 ADW_MAX_SG_LIST, (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 271 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 272 if (error) { 273 aprint_error_dev(&sc->sc_dev, "unable to create CCB DMA map, error = %d\n", 274 error); 275 return (error); 276 } 277 278 /* 279 * put in the phystokv hash table 280 * Never gets taken out. 281 */ 282 ccb->hashkey = htole32(sc->sc_dmamap_control->dm_segs[0].ds_addr + 283 ADW_CCB_OFF(ccb)); 284 hashnum = CCB_HASH(ccb->hashkey); 285 ccb->nexthash = sc->sc_ccbhash[hashnum]; 286 sc->sc_ccbhash[hashnum] = ccb; 287 adw_reset_ccb(ccb); 288 return (0); 289 } 290 291 292 /* 293 * Get a free ccb 294 * 295 * If there are none, see if we can allocate a new one 296 */ 297 static ADW_CCB * 298 adw_get_ccb(ADW_SOFTC *sc) 299 { 300 ADW_CCB *ccb = 0; 301 int s; 302 303 s = splbio(); 304 305 ccb = sc->sc_free_ccb.tqh_first; 306 if (ccb != NULL) { 307 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 308 ccb->flags |= CCB_ALLOC; 309 } 310 splx(s); 311 return (ccb); 312 } 313 314 315 /* 316 * Given a physical address, find the ccb that it corresponds to. 317 */ 318 ADW_CCB * 319 adw_ccb_phys_kv(ADW_SOFTC *sc, u_int32_t ccb_phys) 320 { 321 int hashnum = CCB_HASH(ccb_phys); 322 ADW_CCB *ccb = sc->sc_ccbhash[hashnum]; 323 324 while (ccb) { 325 if (ccb->hashkey == ccb_phys) 326 break; 327 ccb = ccb->nexthash; 328 } 329 return (ccb); 330 } 331 332 333 /* 334 * Queue a CCB to be sent to the controller, and send it if possible. 335 */ 336 static int 337 adw_queue_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 338 { 339 int errcode = ADW_SUCCESS; 340 341 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 342 343 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 344 345 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 346 errcode = AdwExeScsiQueue(sc, &ccb->scsiq); 347 switch(errcode) { 348 case ADW_SUCCESS: 349 break; 350 351 case ADW_BUSY: 352 printf("ADW_BUSY\n"); 353 return(ADW_BUSY); 354 355 case ADW_ERROR: 356 printf("ADW_ERROR\n"); 357 return(ADW_ERROR); 358 } 359 360 TAILQ_INSERT_TAIL(&sc->sc_pending_ccb, ccb, chain); 361 362 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 363 callout_reset(&ccb->xs->xs_callout, 364 mstohz(ccb->timeout), adw_timeout, ccb); 365 } 366 367 return(errcode); 368 } 369 370 371 /******************************************************************************/ 372 /* SCSI layer interfacing routines */ 373 /******************************************************************************/ 374 375 376 int 377 adw_init(ADW_SOFTC *sc) 378 { 379 u_int16_t warn_code; 380 381 382 sc->cfg.lib_version = (ADW_LIB_VERSION_MAJOR << 8) | 383 ADW_LIB_VERSION_MINOR; 384 sc->cfg.chip_version = 385 ADW_GET_CHIP_VERSION(sc->sc_iot, sc->sc_ioh, sc->bus_type); 386 387 /* 388 * Reset the chip to start and allow register writes. 389 */ 390 if (ADW_FIND_SIGNATURE(sc->sc_iot, sc->sc_ioh) == 0) { 391 panic("adw_init: adw_find_signature failed"); 392 } else { 393 AdwResetChip(sc->sc_iot, sc->sc_ioh); 394 395 warn_code = AdwInitFromEEPROM(sc); 396 397 if (warn_code & ADW_WARN_EEPROM_CHKSUM) 398 aprint_error_dev(&sc->sc_dev, "Bad checksum found. " 399 "Setting default values\n"); 400 if (warn_code & ADW_WARN_EEPROM_TERMINATION) 401 aprint_error_dev(&sc->sc_dev, "Bad bus termination setting." 402 "Using automatic termination.\n"); 403 } 404 405 sc->isr_callback = (ADW_CALLBACK) adw_isr_callback; 406 sc->async_callback = (ADW_CALLBACK) adw_async_callback; 407 408 return 0; 409 } 410 411 412 void 413 adw_attach(ADW_SOFTC *sc) 414 { 415 struct scsipi_adapter *adapt = &sc->sc_adapter; 416 struct scsipi_channel *chan = &sc->sc_channel; 417 int ncontrols, error; 418 419 TAILQ_INIT(&sc->sc_free_ccb); 420 TAILQ_INIT(&sc->sc_waiting_ccb); 421 TAILQ_INIT(&sc->sc_pending_ccb); 422 423 /* 424 * Allocate the Control Blocks. 425 */ 426 error = adw_alloc_controls(sc); 427 if (error) 428 return; /* (error) */ ; 429 430 memset(sc->sc_control, 0, sizeof(struct adw_control)); 431 432 /* 433 * Create and initialize the Control Blocks. 434 */ 435 ncontrols = adw_create_ccbs(sc, sc->sc_control->ccbs, ADW_MAX_CCB); 436 if (ncontrols == 0) { 437 aprint_error_dev(&sc->sc_dev, "unable to create Control Blocks\n"); 438 return; /* (ENOMEM) */ ; 439 } else if (ncontrols != ADW_MAX_CCB) { 440 aprint_error_dev(&sc->sc_dev, "WARNING: only %d of %d Control Blocks" 441 " created\n", 442 ncontrols, ADW_MAX_CCB); 443 } 444 445 /* 446 * Create and initialize the Carriers. 447 */ 448 error = adw_alloc_carriers(sc); 449 if (error) 450 return; /* (error) */ ; 451 452 /* 453 * Zero's the freeze_device status 454 */ 455 memset(sc->sc_freeze_dev, 0, sizeof(sc->sc_freeze_dev)); 456 457 /* 458 * Initialize the adapter 459 */ 460 switch (AdwInitDriver(sc)) { 461 case ADW_IERR_BIST_PRE_TEST: 462 panic("%s: BIST pre-test error", 463 device_xname(&sc->sc_dev)); 464 break; 465 466 case ADW_IERR_BIST_RAM_TEST: 467 panic("%s: BIST RAM test error", 468 device_xname(&sc->sc_dev)); 469 break; 470 471 case ADW_IERR_MCODE_CHKSUM: 472 panic("%s: Microcode checksum error", 473 device_xname(&sc->sc_dev)); 474 break; 475 476 case ADW_IERR_ILLEGAL_CONNECTION: 477 panic("%s: All three connectors are in use", 478 device_xname(&sc->sc_dev)); 479 break; 480 481 case ADW_IERR_REVERSED_CABLE: 482 panic("%s: Cable is reversed", 483 device_xname(&sc->sc_dev)); 484 break; 485 486 case ADW_IERR_HVD_DEVICE: 487 panic("%s: HVD attached to LVD connector", 488 device_xname(&sc->sc_dev)); 489 break; 490 491 case ADW_IERR_SINGLE_END_DEVICE: 492 panic("%s: single-ended device is attached to" 493 " one of the connectors", 494 device_xname(&sc->sc_dev)); 495 break; 496 497 case ADW_IERR_NO_CARRIER: 498 panic("%s: unable to create Carriers", 499 device_xname(&sc->sc_dev)); 500 break; 501 502 case ADW_WARN_BUSRESET_ERROR: 503 aprint_error_dev(&sc->sc_dev, "WARNING: Bus Reset Error\n"); 504 break; 505 } 506 507 /* 508 * Fill in the scsipi_adapter. 509 */ 510 memset(adapt, 0, sizeof(*adapt)); 511 adapt->adapt_dev = &sc->sc_dev; 512 adapt->adapt_nchannels = 1; 513 adapt->adapt_openings = ncontrols; 514 adapt->adapt_max_periph = adapt->adapt_openings; 515 adapt->adapt_request = adw_scsipi_request; 516 adapt->adapt_minphys = adwminphys; 517 518 /* 519 * Fill in the scsipi_channel. 520 */ 521 memset(chan, 0, sizeof(*chan)); 522 chan->chan_adapter = adapt; 523 chan->chan_bustype = &scsi_bustype; 524 chan->chan_channel = 0; 525 chan->chan_ntargets = ADW_MAX_TID + 1; 526 chan->chan_nluns = 8; 527 chan->chan_id = sc->chip_scsi_id; 528 529 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 530 } 531 532 533 static void 534 adwminphys(struct buf *bp) 535 { 536 537 if (bp->b_bcount > ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE)) 538 bp->b_bcount = ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE); 539 minphys(bp); 540 } 541 542 543 /* 544 * start a scsi operation given the command and the data address. 545 * Also needs the unit, target and lu. 546 */ 547 static void 548 adw_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 549 void *arg) 550 { 551 struct scsipi_xfer *xs; 552 ADW_SOFTC *sc = (void *)chan->chan_adapter->adapt_dev; 553 ADW_CCB *ccb; 554 int s, retry; 555 556 switch (req) { 557 case ADAPTER_REQ_RUN_XFER: 558 xs = arg; 559 560 /* 561 * get a ccb to use. If the transfer 562 * is from a buf (possibly from interrupt time) 563 * then we can't allow it to sleep 564 */ 565 566 ccb = adw_get_ccb(sc); 567 #ifdef DIAGNOSTIC 568 /* 569 * This should never happen as we track the resources 570 * in the mid-layer. 571 */ 572 if (ccb == NULL) { 573 scsipi_printaddr(xs->xs_periph); 574 printf("unable to allocate ccb\n"); 575 panic("adw_scsipi_request"); 576 } 577 #endif 578 579 ccb->xs = xs; 580 ccb->timeout = xs->timeout; 581 582 if (adw_build_req(sc, ccb)) { 583 s = splbio(); 584 retry = adw_queue_ccb(sc, ccb); 585 splx(s); 586 587 switch(retry) { 588 case ADW_BUSY: 589 xs->error = XS_RESOURCE_SHORTAGE; 590 adw_free_ccb(sc, ccb); 591 scsipi_done(xs); 592 return; 593 594 case ADW_ERROR: 595 xs->error = XS_DRIVER_STUFFUP; 596 adw_free_ccb(sc, ccb); 597 scsipi_done(xs); 598 return; 599 } 600 if ((xs->xs_control & XS_CTL_POLL) == 0) 601 return; 602 /* 603 * Not allowed to use interrupts, poll for completion. 604 */ 605 if (adw_poll(sc, xs, ccb->timeout)) { 606 adw_timeout(ccb); 607 if (adw_poll(sc, xs, ccb->timeout)) 608 adw_timeout(ccb); 609 } 610 } 611 return; 612 613 case ADAPTER_REQ_GROW_RESOURCES: 614 /* XXX Not supported. */ 615 return; 616 617 case ADAPTER_REQ_SET_XFER_MODE: 618 /* XXX XXX XXX */ 619 return; 620 } 621 } 622 623 624 /* 625 * Build a request structure for the Wide Boards. 626 */ 627 static int 628 adw_build_req(ADW_SOFTC *sc, ADW_CCB *ccb) 629 { 630 struct scsipi_xfer *xs = ccb->xs; 631 struct scsipi_periph *periph = xs->xs_periph; 632 bus_dma_tag_t dmat = sc->sc_dmat; 633 ADW_SCSI_REQ_Q *scsiqp; 634 int error; 635 636 scsiqp = &ccb->scsiq; 637 memset(scsiqp, 0, sizeof(ADW_SCSI_REQ_Q)); 638 639 /* 640 * Set the ADW_SCSI_REQ_Q 'ccb_ptr' to point to the 641 * physical CCB structure. 642 */ 643 scsiqp->ccb_ptr = ccb->hashkey; 644 645 /* 646 * Build the ADW_SCSI_REQ_Q request. 647 */ 648 649 /* 650 * Set CDB length and copy it to the request structure. 651 * For wide boards a CDB length maximum of 16 bytes 652 * is supported. 653 */ 654 memcpy(&scsiqp->cdb, xs->cmd, ((scsiqp->cdb_len = xs->cmdlen) <= 12)? 655 xs->cmdlen : 12 ); 656 if(xs->cmdlen > 12) 657 memcpy(&scsiqp->cdb16, &(xs->cmd[12]), xs->cmdlen - 12); 658 659 scsiqp->target_id = periph->periph_target; 660 scsiqp->target_lun = periph->periph_lun; 661 662 scsiqp->vsense_addr = &ccb->scsi_sense; 663 scsiqp->sense_addr = htole32(sc->sc_dmamap_control->dm_segs[0].ds_addr + 664 ADW_CCB_OFF(ccb) + offsetof(struct adw_ccb, scsi_sense)); 665 scsiqp->sense_len = sizeof(struct scsi_sense_data); 666 667 /* 668 * Build ADW_SCSI_REQ_Q for a scatter-gather buffer command. 669 */ 670 if (xs->datalen) { 671 /* 672 * Map the DMA transfer. 673 */ 674 #ifdef TFS 675 if (xs->xs_control & SCSI_DATA_UIO) { 676 error = bus_dmamap_load_uio(dmat, 677 ccb->dmamap_xfer, (struct uio *) xs->data, 678 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 679 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 680 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 681 BUS_DMA_WRITE)); 682 } else 683 #endif /* TFS */ 684 { 685 error = bus_dmamap_load(dmat, 686 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 687 ((xs->xs_control & XS_CTL_NOSLEEP) ? 688 BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | 689 BUS_DMA_STREAMING | 690 ((xs->xs_control & XS_CTL_DATA_IN) ? 691 BUS_DMA_READ : BUS_DMA_WRITE)); 692 } 693 694 switch (error) { 695 case 0: 696 break; 697 case ENOMEM: 698 case EAGAIN: 699 xs->error = XS_RESOURCE_SHORTAGE; 700 goto out_bad; 701 702 default: 703 xs->error = XS_DRIVER_STUFFUP; 704 aprint_error_dev(&sc->sc_dev, "error %d loading DMA map\n", 705 error); 706 out_bad: 707 adw_free_ccb(sc, ccb); 708 scsipi_done(xs); 709 return(0); 710 } 711 712 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 713 ccb->dmamap_xfer->dm_mapsize, 714 (xs->xs_control & XS_CTL_DATA_IN) ? 715 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 716 717 /* 718 * Build scatter-gather list. 719 */ 720 scsiqp->data_cnt = htole32(xs->datalen); 721 scsiqp->vdata_addr = xs->data; 722 scsiqp->data_addr = htole32(ccb->dmamap_xfer->dm_segs[0].ds_addr); 723 memset(ccb->sg_block, 0, 724 sizeof(ADW_SG_BLOCK) * ADW_NUM_SG_BLOCK); 725 adw_build_sglist(ccb, scsiqp, ccb->sg_block); 726 } else { 727 /* 728 * No data xfer, use non S/G values. 729 */ 730 scsiqp->data_cnt = 0; 731 scsiqp->vdata_addr = 0; 732 scsiqp->data_addr = 0; 733 } 734 735 return (1); 736 } 737 738 739 /* 740 * Build scatter-gather list for Wide Boards. 741 */ 742 static void 743 adw_build_sglist(ADW_CCB *ccb, ADW_SCSI_REQ_Q *scsiqp, ADW_SG_BLOCK *sg_block) 744 { 745 u_long sg_block_next_addr; /* block and its next */ 746 u_int32_t sg_block_physical_addr; 747 int i; /* how many SG entries */ 748 bus_dma_segment_t *sg_list = &ccb->dmamap_xfer->dm_segs[0]; 749 int sg_elem_cnt = ccb->dmamap_xfer->dm_nsegs; 750 751 752 sg_block_next_addr = (u_long) sg_block; /* allow math operation */ 753 sg_block_physical_addr = le32toh(ccb->hashkey) + 754 offsetof(struct adw_ccb, sg_block[0]); 755 scsiqp->sg_real_addr = htole32(sg_block_physical_addr); 756 757 /* 758 * If there are more than NO_OF_SG_PER_BLOCK DMA segments (hw sg-list) 759 * then split the request into multiple sg-list blocks. 760 */ 761 762 do { 763 for (i = 0; i < NO_OF_SG_PER_BLOCK; i++) { 764 sg_block->sg_list[i].sg_addr = htole32(sg_list->ds_addr); 765 sg_block->sg_list[i].sg_count = htole32(sg_list->ds_len); 766 767 if (--sg_elem_cnt == 0) { 768 /* last entry, get out */ 769 sg_block->sg_cnt = i + 1; 770 sg_block->sg_ptr = 0; /* next link = NULL */ 771 return; 772 } 773 sg_list++; 774 } 775 sg_block_next_addr += sizeof(ADW_SG_BLOCK); 776 sg_block_physical_addr += sizeof(ADW_SG_BLOCK); 777 778 sg_block->sg_cnt = NO_OF_SG_PER_BLOCK; 779 sg_block->sg_ptr = htole32(sg_block_physical_addr); 780 sg_block = (ADW_SG_BLOCK *) sg_block_next_addr; /* virt. addr */ 781 } while (1); 782 } 783 784 785 /******************************************************************************/ 786 /* Interrupts and TimeOut routines */ 787 /******************************************************************************/ 788 789 790 int 791 adw_intr(void *arg) 792 { 793 ADW_SOFTC *sc = arg; 794 795 796 if(AdwISR(sc) != ADW_FALSE) { 797 return (1); 798 } 799 800 return (0); 801 } 802 803 804 /* 805 * Poll a particular unit, looking for a particular xs 806 */ 807 static int 808 adw_poll(ADW_SOFTC *sc, struct scsipi_xfer *xs, int count) 809 { 810 811 /* timeouts are in msec, so we loop in 1000 usec cycles */ 812 while (count) { 813 adw_intr(sc); 814 if (xs->xs_status & XS_STS_DONE) 815 return (0); 816 delay(1000); /* only happens in boot so ok */ 817 count--; 818 } 819 return (1); 820 } 821 822 823 static void 824 adw_timeout(void *arg) 825 { 826 ADW_CCB *ccb = arg; 827 struct scsipi_xfer *xs = ccb->xs; 828 struct scsipi_periph *periph = xs->xs_periph; 829 ADW_SOFTC *sc = 830 (void *)periph->periph_channel->chan_adapter->adapt_dev; 831 int s; 832 833 scsipi_printaddr(periph); 834 printf("timed out"); 835 836 s = splbio(); 837 838 if (ccb->flags & CCB_ABORTED) { 839 /* 840 * Abort Timed Out 841 * 842 * No more opportunities. Lets try resetting the bus and 843 * reinitialize the host adapter. 844 */ 845 callout_stop(&xs->xs_callout); 846 printf(" AGAIN. Resetting SCSI Bus\n"); 847 adw_reset_bus(sc); 848 splx(s); 849 return; 850 } else if (ccb->flags & CCB_ABORTING) { 851 /* 852 * Abort the operation that has timed out. 853 * 854 * Second opportunity. 855 */ 856 printf("\n"); 857 xs->error = XS_TIMEOUT; 858 ccb->flags |= CCB_ABORTED; 859 #if 0 860 /* 861 * - XXX - 3.3a microcode is BROKEN!!! 862 * 863 * We cannot abort a CCB, so we can only hope the command 864 * get completed before the next timeout, otherwise a 865 * Bus Reset will arrive inexorably. 866 */ 867 /* 868 * ADW_ABORT_CCB() makes the board to generate an interrupt 869 * 870 * - XXX - The above assertion MUST be verified (and this 871 * code changed as well [callout_*()]), when the 872 * ADW_ABORT_CCB will be working again 873 */ 874 ADW_ABORT_CCB(sc, ccb); 875 #endif 876 /* 877 * waiting for multishot callout_reset() let's restart it 878 * by hand so the next time a timeout event will occur 879 * we will reset the bus. 880 */ 881 callout_reset(&xs->xs_callout, 882 mstohz(ccb->timeout), adw_timeout, ccb); 883 } else { 884 /* 885 * Abort the operation that has timed out. 886 * 887 * First opportunity. 888 */ 889 printf("\n"); 890 xs->error = XS_TIMEOUT; 891 ccb->flags |= CCB_ABORTING; 892 #if 0 893 /* 894 * - XXX - 3.3a microcode is BROKEN!!! 895 * 896 * We cannot abort a CCB, so we can only hope the command 897 * get completed before the next 2 timeout, otherwise a 898 * Bus Reset will arrive inexorably. 899 */ 900 /* 901 * ADW_ABORT_CCB() makes the board to generate an interrupt 902 * 903 * - XXX - The above assertion MUST be verified (and this 904 * code changed as well [callout_*()]), when the 905 * ADW_ABORT_CCB will be working again 906 */ 907 ADW_ABORT_CCB(sc, ccb); 908 #endif 909 /* 910 * waiting for multishot callout_reset() let's restart it 911 * by hand so to give a second opportunity to the command 912 * which timed-out. 913 */ 914 callout_reset(&xs->xs_callout, 915 mstohz(ccb->timeout), adw_timeout, ccb); 916 } 917 918 splx(s); 919 } 920 921 922 static void 923 adw_reset_bus(ADW_SOFTC *sc) 924 { 925 ADW_CCB *ccb; 926 int s; 927 struct scsipi_xfer *xs; 928 929 s = splbio(); 930 AdwResetSCSIBus(sc); 931 while((ccb = TAILQ_LAST(&sc->sc_pending_ccb, 932 adw_pending_ccb)) != NULL) { 933 callout_stop(&ccb->xs->xs_callout); 934 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 935 xs = ccb->xs; 936 adw_free_ccb(sc, ccb); 937 xs->error = XS_RESOURCE_SHORTAGE; 938 scsipi_done(xs); 939 } 940 splx(s); 941 } 942 943 944 /******************************************************************************/ 945 /* Host Adapter and Peripherals Information Routines */ 946 /******************************************************************************/ 947 948 949 static void 950 adw_print_info(ADW_SOFTC *sc, int tid) 951 { 952 bus_space_tag_t iot = sc->sc_iot; 953 bus_space_handle_t ioh = sc->sc_ioh; 954 u_int16_t wdtr_able, wdtr_done, wdtr; 955 u_int16_t sdtr_able, sdtr_done, sdtr, period; 956 static int wdtr_reneg = 0, sdtr_reneg = 0; 957 958 if (tid == 0){ 959 wdtr_reneg = sdtr_reneg = 0; 960 } 961 962 printf("%s: target %d ", device_xname(&sc->sc_dev), tid); 963 964 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, wdtr_able); 965 if(wdtr_able & ADW_TID_TO_TIDMASK(tid)) { 966 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, wdtr_done); 967 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + 968 (2 * tid), wdtr); 969 printf("using %d-bits wide, ", (wdtr & 0x8000)? 16 : 8); 970 if((wdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) 971 wdtr_reneg = 1; 972 } else { 973 printf("wide transfers disabled, "); 974 } 975 976 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, sdtr_able); 977 if(sdtr_able & ADW_TID_TO_TIDMASK(tid)) { 978 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, sdtr_done); 979 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + 980 (2 * tid), sdtr); 981 sdtr &= ~0x8000; 982 if((sdtr & 0x1F) != 0) { 983 if((sdtr & 0x1F00) == 0x1100){ 984 printf("80.0 MHz"); 985 } else if((sdtr & 0x1F00) == 0x1000){ 986 printf("40.0 MHz"); 987 } else { 988 /* <= 20.0 MHz */ 989 period = (((sdtr >> 8) * 25) + 50)/4; 990 if(period == 0) { 991 /* Should never happen. */ 992 printf("? MHz"); 993 } else { 994 printf("%d.%d MHz", 250/period, 995 ADW_TENTHS(250, period)); 996 } 997 } 998 printf(" synchronous transfers\n"); 999 } else { 1000 printf("asynchronous transfers\n"); 1001 } 1002 if((sdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) 1003 sdtr_reneg = 1; 1004 } else { 1005 printf("synchronous transfers disabled\n"); 1006 } 1007 1008 if(wdtr_reneg || sdtr_reneg) { 1009 printf("%s: target %d %s", device_xname(&sc->sc_dev), tid, 1010 (wdtr_reneg)? ((sdtr_reneg)? "wide/sync" : "wide") : 1011 ((sdtr_reneg)? "sync" : "") ); 1012 printf(" renegotiation pending before next command.\n"); 1013 } 1014 } 1015 1016 1017 /******************************************************************************/ 1018 /* WIDE boards Interrupt callbacks */ 1019 /******************************************************************************/ 1020 1021 1022 /* 1023 * adw_isr_callback() - Second Level Interrupt Handler called by AdwISR() 1024 * 1025 * Interrupt callback function for the Wide SCSI Adv Library. 1026 * 1027 * Notice: 1028 * Interrupts are disabled by the caller (AdwISR() function), and will be 1029 * enabled at the end of the caller. 1030 */ 1031 static void 1032 adw_isr_callback(ADW_SOFTC *sc, ADW_SCSI_REQ_Q *scsiq) 1033 { 1034 bus_dma_tag_t dmat = sc->sc_dmat; 1035 ADW_CCB *ccb; 1036 struct scsipi_xfer *xs; 1037 struct scsi_sense_data *s1, *s2; 1038 1039 1040 ccb = adw_ccb_phys_kv(sc, scsiq->ccb_ptr); 1041 1042 callout_stop(&ccb->xs->xs_callout); 1043 1044 xs = ccb->xs; 1045 1046 /* 1047 * If we were a data transfer, unload the map that described 1048 * the data buffer. 1049 */ 1050 if (xs->datalen) { 1051 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 1052 ccb->dmamap_xfer->dm_mapsize, 1053 (xs->xs_control & XS_CTL_DATA_IN) ? 1054 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1055 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 1056 } 1057 1058 if ((ccb->flags & CCB_ALLOC) == 0) { 1059 aprint_error_dev(&sc->sc_dev, "exiting ccb not allocated!\n"); 1060 Debugger(); 1061 return; 1062 } 1063 1064 /* 1065 * 'done_status' contains the command's ending status. 1066 * 'host_status' contains the host adapter status. 1067 * 'scsi_status' contains the scsi peripheral status. 1068 */ 1069 if ((scsiq->host_status == QHSTA_NO_ERROR) && 1070 ((scsiq->done_status == QD_NO_ERROR) || 1071 (scsiq->done_status == QD_WITH_ERROR))) { 1072 switch (scsiq->scsi_status) { 1073 case SCSI_STATUS_GOOD: 1074 if ((scsiq->cdb[0] == INQUIRY) && 1075 (scsiq->target_lun == 0)) { 1076 adw_print_info(sc, scsiq->target_id); 1077 } 1078 xs->error = XS_NOERROR; 1079 xs->resid = le32toh(scsiq->data_cnt); 1080 sc->sc_freeze_dev[scsiq->target_id] = 0; 1081 break; 1082 1083 case SCSI_STATUS_CHECK_CONDITION: 1084 case SCSI_STATUS_CMD_TERMINATED: 1085 s1 = &ccb->scsi_sense; 1086 s2 = &xs->sense.scsi_sense; 1087 *s2 = *s1; 1088 xs->error = XS_SENSE; 1089 sc->sc_freeze_dev[scsiq->target_id] = 1; 1090 break; 1091 1092 default: 1093 xs->error = XS_BUSY; 1094 sc->sc_freeze_dev[scsiq->target_id] = 1; 1095 break; 1096 } 1097 } else if (scsiq->done_status == QD_ABORTED_BY_HOST) { 1098 xs->error = XS_DRIVER_STUFFUP; 1099 } else { 1100 switch (scsiq->host_status) { 1101 case QHSTA_M_SEL_TIMEOUT: 1102 xs->error = XS_SELTIMEOUT; 1103 break; 1104 1105 case QHSTA_M_SXFR_OFF_UFLW: 1106 case QHSTA_M_SXFR_OFF_OFLW: 1107 case QHSTA_M_DATA_OVER_RUN: 1108 aprint_error_dev(&sc->sc_dev, "Overrun/Overflow/Underflow condition\n"); 1109 xs->error = XS_DRIVER_STUFFUP; 1110 break; 1111 1112 case QHSTA_M_SXFR_DESELECTED: 1113 case QHSTA_M_UNEXPECTED_BUS_FREE: 1114 aprint_error_dev(&sc->sc_dev, "Unexpected BUS free\n"); 1115 xs->error = XS_DRIVER_STUFFUP; 1116 break; 1117 1118 case QHSTA_M_SCSI_BUS_RESET: 1119 case QHSTA_M_SCSI_BUS_RESET_UNSOL: 1120 aprint_error_dev(&sc->sc_dev, "BUS Reset\n"); 1121 xs->error = XS_DRIVER_STUFFUP; 1122 break; 1123 1124 case QHSTA_M_BUS_DEVICE_RESET: 1125 aprint_error_dev(&sc->sc_dev, "Device Reset\n"); 1126 xs->error = XS_DRIVER_STUFFUP; 1127 break; 1128 1129 case QHSTA_M_QUEUE_ABORTED: 1130 aprint_error_dev(&sc->sc_dev, "Queue Aborted\n"); 1131 xs->error = XS_DRIVER_STUFFUP; 1132 break; 1133 1134 case QHSTA_M_SXFR_SDMA_ERR: 1135 case QHSTA_M_SXFR_SXFR_PERR: 1136 case QHSTA_M_RDMA_PERR: 1137 /* 1138 * DMA Error. This should *NEVER* happen! 1139 * 1140 * Lets try resetting the bus and reinitialize 1141 * the host adapter. 1142 */ 1143 aprint_error_dev(&sc->sc_dev, "DMA Error. Reseting bus\n"); 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 device_xname(&sc->sc_dev)); 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 aprint_error_dev(&sc->sc_dev, "Transfer Error\n"); 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 device_xname(&sc->sc_dev)); 1168 xs->error = XS_DRIVER_STUFFUP; 1169 break; 1170 1171 case QHSTA_M_AUTO_REQ_SENSE_FAIL: 1172 aprint_error_dev(&sc->sc_dev, "Auto Sense Failed\n"); 1173 xs->error = XS_DRIVER_STUFFUP; 1174 break; 1175 1176 case QHSTA_M_INVALID_DEVICE: 1177 aprint_error_dev(&sc->sc_dev, "Invalid Device\n"); 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 aprint_error_dev(&sc->sc_dev, "Unexpected Check Condition\n"); 1187 xs->error = XS_DRIVER_STUFFUP; 1188 break; 1189 1190 case QHSTA_M_SXFR_UNKNOWN_ERROR: 1191 aprint_error_dev(&sc->sc_dev, "Unknown Error\n"); 1192 xs->error = XS_DRIVER_STUFFUP; 1193 break; 1194 1195 default: 1196 panic("%s: Unhandled Host Status Error %x", 1197 device_xname(&sc->sc_dev), scsiq->host_status); 1198 } 1199 } 1200 1201 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1202 done: adw_free_ccb(sc, ccb); 1203 scsipi_done(xs); 1204 } 1205 1206 1207 /* 1208 * adw_async_callback() - Adv Library asynchronous event callback function. 1209 */ 1210 static void 1211 adw_async_callback(ADW_SOFTC *sc, u_int8_t code) 1212 { 1213 switch (code) { 1214 case ADV_ASYNC_SCSI_BUS_RESET_DET: 1215 /* The firmware detected a SCSI Bus reset. */ 1216 printf("%s: SCSI Bus reset detected\n", device_xname(&sc->sc_dev)); 1217 break; 1218 1219 case ADV_ASYNC_RDMA_FAILURE: 1220 /* 1221 * Handle RDMA failure by resetting the SCSI Bus and 1222 * possibly the chip if it is unresponsive. 1223 */ 1224 printf("%s: RDMA failure. Resetting the SCSI Bus and" 1225 " the adapter\n", device_xname(&sc->sc_dev)); 1226 AdwResetSCSIBus(sc); 1227 break; 1228 1229 case ADV_HOST_SCSI_BUS_RESET: 1230 /* Host generated SCSI bus reset occurred. */ 1231 printf("%s: Host generated SCSI bus reset occurred\n", 1232 device_xname(&sc->sc_dev)); 1233 break; 1234 1235 case ADV_ASYNC_CARRIER_READY_FAILURE: 1236 /* Carrier Ready failure. */ 1237 printf("%s: Carrier Ready failure!\n", device_xname(&sc->sc_dev)); 1238 break; 1239 1240 default: 1241 break; 1242 } 1243 } 1244
Indexes created Tue Oct 21 12:09:54 GMT 2025