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sys/dev/ic/adw.c
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1 /* $NetBSD: adw.c,v 1.49 2008/04/08 12:07:25 cegger 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@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 2008/04/08 12:07:25 cegger 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 #include <sys/user.h> 54 55 #include <sys/bus.h> 56 #include <sys/intr.h> 57 58 #include <uvm/uvm_extern.h> 59 60 #include <dev/scsipi/scsi_all.h> 61 #include <dev/scsipi/scsipi_all.h> 62 #include <dev/scsipi/scsiconf.h> 63 64 #include <dev/ic/adwlib.h> 65 #include <dev/ic/adwmcode.h> 66 #include <dev/ic/adw.h> 67 68 #ifndef DDB 69 #define Debugger() panic("should call debugger here (adw.c)") 70 #endif /* ! DDB */ 71 72 /******************************************************************************/ 73 74 75 static int adw_alloc_controls(ADW_SOFTC *); 76 static int adw_alloc_carriers(ADW_SOFTC *); 77 static int adw_create_ccbs(ADW_SOFTC *, ADW_CCB *, int); 78 static void adw_free_ccb(ADW_SOFTC *, ADW_CCB *); 79 static void adw_reset_ccb(ADW_CCB *); 80 static int adw_init_ccb(ADW_SOFTC *, ADW_CCB *); 81 static ADW_CCB *adw_get_ccb(ADW_SOFTC *); 82 static int adw_queue_ccb(ADW_SOFTC *, ADW_CCB *); 83 84 static void adw_scsipi_request(struct scsipi_channel *, 85 scsipi_adapter_req_t, void *); 86 static int adw_build_req(ADW_SOFTC *, ADW_CCB *); 87 static void adw_build_sglist(ADW_CCB *, ADW_SCSI_REQ_Q *, ADW_SG_BLOCK *); 88 static void adwminphys(struct buf *); 89 static void adw_isr_callback(ADW_SOFTC *, ADW_SCSI_REQ_Q *); 90 static void adw_async_callback(ADW_SOFTC *, u_int8_t); 91 92 static void adw_print_info(ADW_SOFTC *, int); 93 94 static int adw_poll(ADW_SOFTC *, struct scsipi_xfer *, int); 95 static void adw_timeout(void *); 96 static void adw_reset_bus(ADW_SOFTC *); 97 98 99 /******************************************************************************/ 100 /* DMA Mapping for Control Blocks */ 101 /******************************************************************************/ 102 103 104 static int 105 adw_alloc_controls(ADW_SOFTC *sc) 106 { 107 bus_dma_segment_t seg; 108 int error, rseg; 109 110 /* 111 * Allocate the control structure. 112 */ 113 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adw_control), 114 PAGE_SIZE, 0, &seg, 1, &rseg, 115 BUS_DMA_NOWAIT)) != 0) { 116 aprint_error_dev(&sc->sc_dev, "unable to allocate control structures," 117 " error = %d\n", error); 118 return (error); 119 } 120 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 121 sizeof(struct adw_control), (void **) & sc->sc_control, 122 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 123 aprint_error_dev(&sc->sc_dev, "unable to map control structures, error = %d\n", 124 error); 125 return (error); 126 } 127 128 /* 129 * Create and load the DMA map used for the control blocks. 130 */ 131 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adw_control), 132 1, sizeof(struct adw_control), 0, BUS_DMA_NOWAIT, 133 &sc->sc_dmamap_control)) != 0) { 134 aprint_error_dev(&sc->sc_dev, "unable to create control DMA map, error = %d\n", 135 error); 136 return (error); 137 } 138 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 139 sc->sc_control, sizeof(struct adw_control), NULL, 140 BUS_DMA_NOWAIT)) != 0) { 141 aprint_error_dev(&sc->sc_dev, "unable to load control DMA map, error = %d\n", 142 error); 143 return (error); 144 } 145 146 return (0); 147 } 148 149 150 static int 151 adw_alloc_carriers(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 aprint_error_dev(&sc->sc_dev, 163 "malloc() failed in allocating carrier structures\n"); 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 aprint_error_dev(&sc->sc_dev, "unable to allocate carrier structures," 171 " error = %d\n", error); 172 return (error); 173 } 174 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 175 sizeof(ADW_CARRIER) * ADW_MAX_CARRIER, 176 (void **) &sc->sc_control->carriers, 177 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 178 aprint_error_dev(&sc->sc_dev, "unable to map carrier structures," 179 " error = %d\n", 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 aprint_error_dev(&sc->sc_dev, "unable to create carriers DMA map," 191 " error = %d\n", 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 aprint_error_dev(&sc->sc_dev, "unable to load carriers DMA map," 199 " error = %d\n", 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(ADW_SOFTC *sc, ADW_CCB *ccbstore, int count) 218 { 219 ADW_CCB *ccb; 220 int i, error; 221 222 for (i = 0; i < count; i++) { 223 ccb = &ccbstore[i]; 224 if ((error = adw_init_ccb(sc, ccb)) != 0) { 225 aprint_error_dev(&sc->sc_dev, "unable to initialize ccb, error = %d\n", 226 error); 227 return (i); 228 } 229 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 230 } 231 232 return (i); 233 } 234 235 236 /* 237 * A ccb is put onto the free list. 238 */ 239 static void 240 adw_free_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 241 { 242 int s; 243 244 s = splbio(); 245 246 adw_reset_ccb(ccb); 247 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 248 249 splx(s); 250 } 251 252 253 static void 254 adw_reset_ccb(ADW_CCB *ccb) 255 { 256 257 ccb->flags = 0; 258 } 259 260 261 static int 262 adw_init_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 263 { 264 int hashnum, error; 265 266 /* 267 * Create the DMA map for this CCB. 268 */ 269 error = bus_dmamap_create(sc->sc_dmat, 270 (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 271 ADW_MAX_SG_LIST, (ADW_MAX_SG_LIST - 1) * PAGE_SIZE, 272 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 273 if (error) { 274 aprint_error_dev(&sc->sc_dev, "unable to create CCB DMA map, error = %d\n", 275 error); 276 return (error); 277 } 278 279 /* 280 * put in the phystokv hash table 281 * Never gets taken out. 282 */ 283 ccb->hashkey = htole32(sc->sc_dmamap_control->dm_segs[0].ds_addr + 284 ADW_CCB_OFF(ccb)); 285 hashnum = CCB_HASH(ccb->hashkey); 286 ccb->nexthash = sc->sc_ccbhash[hashnum]; 287 sc->sc_ccbhash[hashnum] = ccb; 288 adw_reset_ccb(ccb); 289 return (0); 290 } 291 292 293 /* 294 * Get a free ccb 295 * 296 * If there are none, see if we can allocate a new one 297 */ 298 static ADW_CCB * 299 adw_get_ccb(ADW_SOFTC *sc) 300 { 301 ADW_CCB *ccb = 0; 302 int s; 303 304 s = splbio(); 305 306 ccb = sc->sc_free_ccb.tqh_first; 307 if (ccb != NULL) { 308 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 309 ccb->flags |= CCB_ALLOC; 310 } 311 splx(s); 312 return (ccb); 313 } 314 315 316 /* 317 * Given a physical address, find the ccb that it corresponds to. 318 */ 319 ADW_CCB * 320 adw_ccb_phys_kv(ADW_SOFTC *sc, u_int32_t ccb_phys) 321 { 322 int hashnum = CCB_HASH(ccb_phys); 323 ADW_CCB *ccb = sc->sc_ccbhash[hashnum]; 324 325 while (ccb) { 326 if (ccb->hashkey == ccb_phys) 327 break; 328 ccb = ccb->nexthash; 329 } 330 return (ccb); 331 } 332 333 334 /* 335 * Queue a CCB to be sent to the controller, and send it if possible. 336 */ 337 static int 338 adw_queue_ccb(ADW_SOFTC *sc, ADW_CCB *ccb) 339 { 340 int errcode = ADW_SUCCESS; 341 342 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 343 344 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 345 346 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 347 errcode = AdwExeScsiQueue(sc, &ccb->scsiq); 348 switch(errcode) { 349 case ADW_SUCCESS: 350 break; 351 352 case ADW_BUSY: 353 printf("ADW_BUSY\n"); 354 return(ADW_BUSY); 355 356 case ADW_ERROR: 357 printf("ADW_ERROR\n"); 358 return(ADW_ERROR); 359 } 360 361 TAILQ_INSERT_TAIL(&sc->sc_pending_ccb, ccb, chain); 362 363 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 364 callout_reset(&ccb->xs->xs_callout, 365 mstohz(ccb->timeout), adw_timeout, ccb); 366 } 367 368 return(errcode); 369 } 370 371 372 /******************************************************************************/ 373 /* SCSI layer interfacing routines */ 374 /******************************************************************************/ 375 376 377 int 378 adw_init(ADW_SOFTC *sc) 379 { 380 u_int16_t warn_code; 381 382 383 sc->cfg.lib_version = (ADW_LIB_VERSION_MAJOR << 8) | 384 ADW_LIB_VERSION_MINOR; 385 sc->cfg.chip_version = 386 ADW_GET_CHIP_VERSION(sc->sc_iot, sc->sc_ioh, sc->bus_type); 387 388 /* 389 * Reset the chip to start and allow register writes. 390 */ 391 if (ADW_FIND_SIGNATURE(sc->sc_iot, sc->sc_ioh) == 0) { 392 panic("adw_init: adw_find_signature failed"); 393 } else { 394 AdwResetChip(sc->sc_iot, sc->sc_ioh); 395 396 warn_code = AdwInitFromEEPROM(sc); 397 398 if (warn_code & ADW_WARN_EEPROM_CHKSUM) 399 aprint_error_dev(&sc->sc_dev, "Bad checksum found. " 400 "Setting default values\n"); 401 if (warn_code & ADW_WARN_EEPROM_TERMINATION) 402 aprint_error_dev(&sc->sc_dev, "Bad bus termination setting." 403 "Using automatic termination.\n"); 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 memset(sc->sc_control, 0, 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 aprint_error_dev(&sc->sc_dev, "unable to create Control Blocks\n"); 439 return; /* (ENOMEM) */ ; 440 } else if (ncontrols != ADW_MAX_CCB) { 441 aprint_error_dev(&sc->sc_dev, "WARNING: only %d of %d Control Blocks" 442 " created\n", 443 ncontrols, ADW_MAX_CCB); 444 } 445 446 /* 447 * Create and initialize the Carriers. 448 */ 449 error = adw_alloc_carriers(sc); 450 if (error) 451 return; /* (error) */ ; 452 453 /* 454 * Zero's the freeze_device status 455 */ 456 memset(sc->sc_freeze_dev, 0, sizeof(sc->sc_freeze_dev)); 457 458 /* 459 * Initialize the adapter 460 */ 461 switch (AdwInitDriver(sc)) { 462 case ADW_IERR_BIST_PRE_TEST: 463 panic("%s: BIST pre-test error", 464 device_xname(&sc->sc_dev)); 465 break; 466 467 case ADW_IERR_BIST_RAM_TEST: 468 panic("%s: BIST RAM test error", 469 device_xname(&sc->sc_dev)); 470 break; 471 472 case ADW_IERR_MCODE_CHKSUM: 473 panic("%s: Microcode checksum error", 474 device_xname(&sc->sc_dev)); 475 break; 476 477 case ADW_IERR_ILLEGAL_CONNECTION: 478 panic("%s: All three connectors are in use", 479 device_xname(&sc->sc_dev)); 480 break; 481 482 case ADW_IERR_REVERSED_CABLE: 483 panic("%s: Cable is reversed", 484 device_xname(&sc->sc_dev)); 485 break; 486 487 case ADW_IERR_HVD_DEVICE: 488 panic("%s: HVD attached to LVD connector", 489 device_xname(&sc->sc_dev)); 490 break; 491 492 case ADW_IERR_SINGLE_END_DEVICE: 493 panic("%s: single-ended device is attached to" 494 " one of the connectors", 495 device_xname(&sc->sc_dev)); 496 break; 497 498 case ADW_IERR_NO_CARRIER: 499 panic("%s: unable to create Carriers", 500 device_xname(&sc->sc_dev)); 501 break; 502 503 case ADW_WARN_BUSRESET_ERROR: 504 aprint_error_dev(&sc->sc_dev, "WARNING: Bus Reset Error\n"); 505 break; 506 } 507 508 /* 509 * Fill in the scsipi_adapter. 510 */ 511 memset(adapt, 0, sizeof(*adapt)); 512 adapt->adapt_dev = &sc->sc_dev; 513 adapt->adapt_nchannels = 1; 514 adapt->adapt_openings = ncontrols; 515 adapt->adapt_max_periph = adapt->adapt_openings; 516 adapt->adapt_request = adw_scsipi_request; 517 adapt->adapt_minphys = adwminphys; 518 519 /* 520 * Fill in the scsipi_channel. 521 */ 522 memset(chan, 0, sizeof(*chan)); 523 chan->chan_adapter = adapt; 524 chan->chan_bustype = &scsi_bustype; 525 chan->chan_channel = 0; 526 chan->chan_ntargets = ADW_MAX_TID + 1; 527 chan->chan_nluns = 8; 528 chan->chan_id = sc->chip_scsi_id; 529 530 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 531 } 532 533 534 static void 535 adwminphys(struct buf *bp) 536 { 537 538 if (bp->b_bcount > ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE)) 539 bp->b_bcount = ((ADW_MAX_SG_LIST - 1) * PAGE_SIZE); 540 minphys(bp); 541 } 542 543 544 /* 545 * start a scsi operation given the command and the data address. 546 * Also needs the unit, target and lu. 547 */ 548 static void 549 adw_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 550 void *arg) 551 { 552 struct scsipi_xfer *xs; 553 ADW_SOFTC *sc = (void *)chan->chan_adapter->adapt_dev; 554 ADW_CCB *ccb; 555 int s, retry; 556 557 switch (req) { 558 case ADAPTER_REQ_RUN_XFER: 559 xs = arg; 560 561 /* 562 * get a ccb to use. If the transfer 563 * is from a buf (possibly from interrupt time) 564 * then we can't allow it to sleep 565 */ 566 567 ccb = adw_get_ccb(sc); 568 #ifdef DIAGNOSTIC 569 /* 570 * This should never happen as we track the resources 571 * in the mid-layer. 572 */ 573 if (ccb == NULL) { 574 scsipi_printaddr(xs->xs_periph); 575 printf("unable to allocate ccb\n"); 576 panic("adw_scsipi_request"); 577 } 578 #endif 579 580 ccb->xs = xs; 581 ccb->timeout = xs->timeout; 582 583 if (adw_build_req(sc, ccb)) { 584 s = splbio(); 585 retry = adw_queue_ccb(sc, ccb); 586 splx(s); 587 588 switch(retry) { 589 case ADW_BUSY: 590 xs->error = XS_RESOURCE_SHORTAGE; 591 adw_free_ccb(sc, ccb); 592 scsipi_done(xs); 593 return; 594 595 case ADW_ERROR: 596 xs->error = XS_DRIVER_STUFFUP; 597 adw_free_ccb(sc, ccb); 598 scsipi_done(xs); 599 return; 600 } 601 if ((xs->xs_control & XS_CTL_POLL) == 0) 602 return; 603 /* 604 * Not allowed to use interrupts, poll for completion. 605 */ 606 if (adw_poll(sc, xs, ccb->timeout)) { 607 adw_timeout(ccb); 608 if (adw_poll(sc, xs, ccb->timeout)) 609 adw_timeout(ccb); 610 } 611 } 612 return; 613 614 case ADAPTER_REQ_GROW_RESOURCES: 615 /* XXX Not supported. */ 616 return; 617 618 case ADAPTER_REQ_SET_XFER_MODE: 619 /* XXX XXX XXX */ 620 return; 621 } 622 } 623 624 625 /* 626 * Build a request structure for the Wide Boards. 627 */ 628 static int 629 adw_build_req(ADW_SOFTC *sc, ADW_CCB *ccb) 630 { 631 struct scsipi_xfer *xs = ccb->xs; 632 struct scsipi_periph *periph = xs->xs_periph; 633 bus_dma_tag_t dmat = sc->sc_dmat; 634 ADW_SCSI_REQ_Q *scsiqp; 635 int error; 636 637 scsiqp = &ccb->scsiq; 638 memset(scsiqp, 0, sizeof(ADW_SCSI_REQ_Q)); 639 640 /* 641 * Set the ADW_SCSI_REQ_Q 'ccb_ptr' to point to the 642 * physical CCB structure. 643 */ 644 scsiqp->ccb_ptr = ccb->hashkey; 645 646 /* 647 * Build the ADW_SCSI_REQ_Q request. 648 */ 649 650 /* 651 * Set CDB length and copy it to the request structure. 652 * For wide boards a CDB length maximum of 16 bytes 653 * is supported. 654 */ 655 memcpy(&scsiqp->cdb, xs->cmd, ((scsiqp->cdb_len = xs->cmdlen) <= 12)? 656 xs->cmdlen : 12 ); 657 if(xs->cmdlen > 12) 658 memcpy(&scsiqp->cdb16, &(xs->cmd[12]), xs->cmdlen - 12); 659 660 scsiqp->target_id = periph->periph_target; 661 scsiqp->target_lun = periph->periph_lun; 662 663 scsiqp->vsense_addr = &ccb->scsi_sense; 664 scsiqp->sense_addr = htole32(sc->sc_dmamap_control->dm_segs[0].ds_addr + 665 ADW_CCB_OFF(ccb) + offsetof(struct adw_ccb, scsi_sense)); 666 scsiqp->sense_len = sizeof(struct scsi_sense_data); 667 668 /* 669 * Build ADW_SCSI_REQ_Q for a scatter-gather buffer command. 670 */ 671 if (xs->datalen) { 672 /* 673 * Map the DMA transfer. 674 */ 675 #ifdef TFS 676 if (xs->xs_control & SCSI_DATA_UIO) { 677 error = bus_dmamap_load_uio(dmat, 678 ccb->dmamap_xfer, (struct uio *) xs->data, 679 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 680 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 681 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 682 BUS_DMA_WRITE)); 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 ((xs->xs_control & XS_CTL_DATA_IN) ? 692 BUS_DMA_READ : BUS_DMA_WRITE)); 693 } 694 695 switch (error) { 696 case 0: 697 break; 698 case ENOMEM: 699 case EAGAIN: 700 xs->error = XS_RESOURCE_SHORTAGE; 701 goto out_bad; 702 703 default: 704 xs->error = XS_DRIVER_STUFFUP; 705 aprint_error_dev(&sc->sc_dev, "error %d loading DMA map\n", 706 error); 707 out_bad: 708 adw_free_ccb(sc, ccb); 709 scsipi_done(xs); 710 return(0); 711 } 712 713 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 714 ccb->dmamap_xfer->dm_mapsize, 715 (xs->xs_control & XS_CTL_DATA_IN) ? 716 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 717 718 /* 719 * Build scatter-gather list. 720 */ 721 scsiqp->data_cnt = htole32(xs->datalen); 722 scsiqp->vdata_addr = xs->data; 723 scsiqp->data_addr = htole32(ccb->dmamap_xfer->dm_segs[0].ds_addr); 724 memset(ccb->sg_block, 0, 725 sizeof(ADW_SG_BLOCK) * ADW_NUM_SG_BLOCK); 726 adw_build_sglist(ccb, scsiqp, ccb->sg_block); 727 } else { 728 /* 729 * No data xfer, use non S/G values. 730 */ 731 scsiqp->data_cnt = 0; 732 scsiqp->vdata_addr = 0; 733 scsiqp->data_addr = 0; 734 } 735 736 return (1); 737 } 738 739 740 /* 741 * Build scatter-gather list for Wide Boards. 742 */ 743 static void 744 adw_build_sglist(ADW_CCB *ccb, ADW_SCSI_REQ_Q *scsiqp, ADW_SG_BLOCK *sg_block) 745 { 746 u_long sg_block_next_addr; /* block and its next */ 747 u_int32_t sg_block_physical_addr; 748 int i; /* how many SG entries */ 749 bus_dma_segment_t *sg_list = &ccb->dmamap_xfer->dm_segs[0]; 750 int sg_elem_cnt = ccb->dmamap_xfer->dm_nsegs; 751 752 753 sg_block_next_addr = (u_long) sg_block; /* allow math operation */ 754 sg_block_physical_addr = le32toh(ccb->hashkey) + 755 offsetof(struct adw_ccb, sg_block[0]); 756 scsiqp->sg_real_addr = htole32(sg_block_physical_addr); 757 758 /* 759 * If there are more than NO_OF_SG_PER_BLOCK DMA segments (hw sg-list) 760 * then split the request into multiple sg-list blocks. 761 */ 762 763 do { 764 for (i = 0; i < NO_OF_SG_PER_BLOCK; i++) { 765 sg_block->sg_list[i].sg_addr = htole32(sg_list->ds_addr); 766 sg_block->sg_list[i].sg_count = htole32(sg_list->ds_len); 767 768 if (--sg_elem_cnt == 0) { 769 /* last entry, get out */ 770 sg_block->sg_cnt = i + 1; 771 sg_block->sg_ptr = 0; /* next link = NULL */ 772 return; 773 } 774 sg_list++; 775 } 776 sg_block_next_addr += sizeof(ADW_SG_BLOCK); 777 sg_block_physical_addr += sizeof(ADW_SG_BLOCK); 778 779 sg_block->sg_cnt = NO_OF_SG_PER_BLOCK; 780 sg_block->sg_ptr = htole32(sg_block_physical_addr); 781 sg_block = (ADW_SG_BLOCK *) sg_block_next_addr; /* virt. addr */ 782 } while (1); 783 } 784 785 786 /******************************************************************************/ 787 /* Interrupts and TimeOut routines */ 788 /******************************************************************************/ 789 790 791 int 792 adw_intr(void *arg) 793 { 794 ADW_SOFTC *sc = arg; 795 796 797 if(AdwISR(sc) != ADW_FALSE) { 798 return (1); 799 } 800 801 return (0); 802 } 803 804 805 /* 806 * Poll a particular unit, looking for a particular xs 807 */ 808 static int 809 adw_poll(ADW_SOFTC *sc, struct scsipi_xfer *xs, int count) 810 { 811 812 /* timeouts are in msec, so we loop in 1000 usec cycles */ 813 while (count) { 814 adw_intr(sc); 815 if (xs->xs_status & XS_STS_DONE) 816 return (0); 817 delay(1000); /* only happens in boot so ok */ 818 count--; 819 } 820 return (1); 821 } 822 823 824 static void 825 adw_timeout(void *arg) 826 { 827 ADW_CCB *ccb = arg; 828 struct scsipi_xfer *xs = ccb->xs; 829 struct scsipi_periph *periph = xs->xs_periph; 830 ADW_SOFTC *sc = 831 (void *)periph->periph_channel->chan_adapter->adapt_dev; 832 int s; 833 834 scsipi_printaddr(periph); 835 printf("timed out"); 836 837 s = splbio(); 838 839 if (ccb->flags & CCB_ABORTED) { 840 /* 841 * Abort Timed Out 842 * 843 * No more opportunities. Lets try resetting the bus and 844 * reinitialize the host adapter. 845 */ 846 callout_stop(&xs->xs_callout); 847 printf(" AGAIN. Resetting SCSI Bus\n"); 848 adw_reset_bus(sc); 849 splx(s); 850 return; 851 } else if (ccb->flags & CCB_ABORTING) { 852 /* 853 * Abort the operation that has timed out. 854 * 855 * Second opportunity. 856 */ 857 printf("\n"); 858 xs->error = XS_TIMEOUT; 859 ccb->flags |= CCB_ABORTED; 860 #if 0 861 /* 862 * - XXX - 3.3a microcode is BROKEN!!! 863 * 864 * We cannot abort a CCB, so we can only hope the command 865 * get completed before the next timeout, otherwise a 866 * Bus Reset will arrive inexorably. 867 */ 868 /* 869 * ADW_ABORT_CCB() makes the board to generate an interrupt 870 * 871 * - XXX - The above assertion MUST be verified (and this 872 * code changed as well [callout_*()]), when the 873 * ADW_ABORT_CCB will be working again 874 */ 875 ADW_ABORT_CCB(sc, ccb); 876 #endif 877 /* 878 * waiting for multishot callout_reset() let's restart it 879 * by hand so the next time a timeout event will occur 880 * we will reset the bus. 881 */ 882 callout_reset(&xs->xs_callout, 883 mstohz(ccb->timeout), adw_timeout, ccb); 884 } else { 885 /* 886 * Abort the operation that has timed out. 887 * 888 * First opportunity. 889 */ 890 printf("\n"); 891 xs->error = XS_TIMEOUT; 892 ccb->flags |= CCB_ABORTING; 893 #if 0 894 /* 895 * - XXX - 3.3a microcode is BROKEN!!! 896 * 897 * We cannot abort a CCB, so we can only hope the command 898 * get completed before the next 2 timeout, otherwise a 899 * Bus Reset will arrive inexorably. 900 */ 901 /* 902 * ADW_ABORT_CCB() makes the board to generate an interrupt 903 * 904 * - XXX - The above assertion MUST be verified (and this 905 * code changed as well [callout_*()]), when the 906 * ADW_ABORT_CCB will be working again 907 */ 908 ADW_ABORT_CCB(sc, ccb); 909 #endif 910 /* 911 * waiting for multishot callout_reset() let's restart it 912 * by hand so to give a second opportunity to the command 913 * which timed-out. 914 */ 915 callout_reset(&xs->xs_callout, 916 mstohz(ccb->timeout), adw_timeout, ccb); 917 } 918 919 splx(s); 920 } 921 922 923 static void 924 adw_reset_bus(ADW_SOFTC *sc) 925 { 926 ADW_CCB *ccb; 927 int s; 928 struct scsipi_xfer *xs; 929 930 s = splbio(); 931 AdwResetSCSIBus(sc); 932 while((ccb = TAILQ_LAST(&sc->sc_pending_ccb, 933 adw_pending_ccb)) != NULL) { 934 callout_stop(&ccb->xs->xs_callout); 935 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 936 xs = ccb->xs; 937 adw_free_ccb(sc, ccb); 938 xs->error = XS_RESOURCE_SHORTAGE; 939 scsipi_done(xs); 940 } 941 splx(s); 942 } 943 944 945 /******************************************************************************/ 946 /* Host Adapter and Peripherals Information Routines */ 947 /******************************************************************************/ 948 949 950 static void 951 adw_print_info(ADW_SOFTC *sc, int tid) 952 { 953 bus_space_tag_t iot = sc->sc_iot; 954 bus_space_handle_t ioh = sc->sc_ioh; 955 u_int16_t wdtr_able, wdtr_done, wdtr; 956 u_int16_t sdtr_able, sdtr_done, sdtr, period; 957 static int wdtr_reneg = 0, sdtr_reneg = 0; 958 959 if (tid == 0){ 960 wdtr_reneg = sdtr_reneg = 0; 961 } 962 963 printf("%s: target %d ", device_xname(&sc->sc_dev), tid); 964 965 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, wdtr_able); 966 if(wdtr_able & ADW_TID_TO_TIDMASK(tid)) { 967 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, wdtr_done); 968 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + 969 (2 * tid), wdtr); 970 printf("using %d-bits wide, ", (wdtr & 0x8000)? 16 : 8); 971 if((wdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) 972 wdtr_reneg = 1; 973 } else { 974 printf("wide transfers disabled, "); 975 } 976 977 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_ABLE, sdtr_able); 978 if(sdtr_able & ADW_TID_TO_TIDMASK(tid)) { 979 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_SDTR_DONE, sdtr_done); 980 ADW_READ_WORD_LRAM(iot, ioh, ADW_MC_DEVICE_HSHK_CFG_TABLE + 981 (2 * tid), sdtr); 982 sdtr &= ~0x8000; 983 if((sdtr & 0x1F) != 0) { 984 if((sdtr & 0x1F00) == 0x1100){ 985 printf("80.0 MHz"); 986 } else if((sdtr & 0x1F00) == 0x1000){ 987 printf("40.0 MHz"); 988 } else { 989 /* <= 20.0 MHz */ 990 period = (((sdtr >> 8) * 25) + 50)/4; 991 if(period == 0) { 992 /* Should never happen. */ 993 printf("? MHz"); 994 } else { 995 printf("%d.%d MHz", 250/period, 996 ADW_TENTHS(250, period)); 997 } 998 } 999 printf(" synchronous transfers\n"); 1000 } else { 1001 printf("asynchronous transfers\n"); 1002 } 1003 if((sdtr_done & ADW_TID_TO_TIDMASK(tid)) == 0) 1004 sdtr_reneg = 1; 1005 } else { 1006 printf("synchronous transfers disabled\n"); 1007 } 1008 1009 if(wdtr_reneg || sdtr_reneg) { 1010 printf("%s: target %d %s", device_xname(&sc->sc_dev), tid, 1011 (wdtr_reneg)? ((sdtr_reneg)? "wide/sync" : "wide") : 1012 ((sdtr_reneg)? "sync" : "") ); 1013 printf(" renegotiation pending before next command.\n"); 1014 } 1015 } 1016 1017 1018 /******************************************************************************/ 1019 /* WIDE boards Interrupt callbacks */ 1020 /******************************************************************************/ 1021 1022 1023 /* 1024 * adw_isr_callback() - Second Level Interrupt Handler called by AdwISR() 1025 * 1026 * Interrupt callback function for the Wide SCSI Adv Library. 1027 * 1028 * Notice: 1029 * Interrupts are disabled by the caller (AdwISR() function), and will be 1030 * enabled at the end of the caller. 1031 */ 1032 static void 1033 adw_isr_callback(ADW_SOFTC *sc, ADW_SCSI_REQ_Q *scsiq) 1034 { 1035 bus_dma_tag_t dmat = sc->sc_dmat; 1036 ADW_CCB *ccb; 1037 struct scsipi_xfer *xs; 1038 struct scsi_sense_data *s1, *s2; 1039 1040 1041 ccb = adw_ccb_phys_kv(sc, scsiq->ccb_ptr); 1042 1043 callout_stop(&ccb->xs->xs_callout); 1044 1045 xs = ccb->xs; 1046 1047 /* 1048 * If we were a data transfer, unload the map that described 1049 * the data buffer. 1050 */ 1051 if (xs->datalen) { 1052 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 1053 ccb->dmamap_xfer->dm_mapsize, 1054 (xs->xs_control & XS_CTL_DATA_IN) ? 1055 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1056 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 1057 } 1058 1059 if ((ccb->flags & CCB_ALLOC) == 0) { 1060 aprint_error_dev(&sc->sc_dev, "exiting ccb not allocated!\n"); 1061 Debugger(); 1062 return; 1063 } 1064 1065 /* 1066 * 'done_status' contains the command's ending status. 1067 * 'host_status' contains the host adapter status. 1068 * 'scsi_status' contains the scsi peripheral status. 1069 */ 1070 if ((scsiq->host_status == QHSTA_NO_ERROR) && 1071 ((scsiq->done_status == QD_NO_ERROR) || 1072 (scsiq->done_status == QD_WITH_ERROR))) { 1073 switch (scsiq->scsi_status) { 1074 case SCSI_STATUS_GOOD: 1075 if ((scsiq->cdb[0] == INQUIRY) && 1076 (scsiq->target_lun == 0)) { 1077 adw_print_info(sc, scsiq->target_id); 1078 } 1079 xs->error = XS_NOERROR; 1080 xs->resid = le32toh(scsiq->data_cnt); 1081 sc->sc_freeze_dev[scsiq->target_id] = 0; 1082 break; 1083 1084 case SCSI_STATUS_CHECK_CONDITION: 1085 case SCSI_STATUS_CMD_TERMINATED: 1086 s1 = &ccb->scsi_sense; 1087 s2 = &xs->sense.scsi_sense; 1088 *s2 = *s1; 1089 xs->error = XS_SENSE; 1090 sc->sc_freeze_dev[scsiq->target_id] = 1; 1091 break; 1092 1093 default: 1094 xs->error = XS_BUSY; 1095 sc->sc_freeze_dev[scsiq->target_id] = 1; 1096 break; 1097 } 1098 } else if (scsiq->done_status == QD_ABORTED_BY_HOST) { 1099 xs->error = XS_DRIVER_STUFFUP; 1100 } else { 1101 switch (scsiq->host_status) { 1102 case QHSTA_M_SEL_TIMEOUT: 1103 xs->error = XS_SELTIMEOUT; 1104 break; 1105 1106 case QHSTA_M_SXFR_OFF_UFLW: 1107 case QHSTA_M_SXFR_OFF_OFLW: 1108 case QHSTA_M_DATA_OVER_RUN: 1109 aprint_error_dev(&sc->sc_dev, "Overrun/Overflow/Underflow condition\n"); 1110 xs->error = XS_DRIVER_STUFFUP; 1111 break; 1112 1113 case QHSTA_M_SXFR_DESELECTED: 1114 case QHSTA_M_UNEXPECTED_BUS_FREE: 1115 aprint_error_dev(&sc->sc_dev, "Unexpected BUS free\n"); 1116 xs->error = XS_DRIVER_STUFFUP; 1117 break; 1118 1119 case QHSTA_M_SCSI_BUS_RESET: 1120 case QHSTA_M_SCSI_BUS_RESET_UNSOL: 1121 aprint_error_dev(&sc->sc_dev, "BUS Reset\n"); 1122 xs->error = XS_DRIVER_STUFFUP; 1123 break; 1124 1125 case QHSTA_M_BUS_DEVICE_RESET: 1126 aprint_error_dev(&sc->sc_dev, "Device Reset\n"); 1127 xs->error = XS_DRIVER_STUFFUP; 1128 break; 1129 1130 case QHSTA_M_QUEUE_ABORTED: 1131 aprint_error_dev(&sc->sc_dev, "Queue Aborted\n"); 1132 xs->error = XS_DRIVER_STUFFUP; 1133 break; 1134 1135 case QHSTA_M_SXFR_SDMA_ERR: 1136 case QHSTA_M_SXFR_SXFR_PERR: 1137 case QHSTA_M_RDMA_PERR: 1138 /* 1139 * DMA Error. This should *NEVER* happen! 1140 * 1141 * Lets try resetting the bus and reinitialize 1142 * the host adapter. 1143 */ 1144 aprint_error_dev(&sc->sc_dev, "DMA Error. Reseting bus\n"); 1145 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1146 adw_reset_bus(sc); 1147 xs->error = XS_BUSY; 1148 goto done; 1149 1150 case QHSTA_M_WTM_TIMEOUT: 1151 case QHSTA_M_SXFR_WD_TMO: 1152 /* The SCSI bus hung in a phase */ 1153 printf("%s: Watch Dog timer expired. Reseting bus\n", 1154 device_xname(&sc->sc_dev)); 1155 TAILQ_REMOVE(&sc->sc_pending_ccb, ccb, chain); 1156 adw_reset_bus(sc); 1157 xs->error = XS_BUSY; 1158 goto done; 1159 1160 case QHSTA_M_SXFR_XFR_PH_ERR: 1161 aprint_error_dev(&sc->sc_dev, "Transfer Error\n"); 1162 xs->error = XS_DRIVER_STUFFUP; 1163 break; 1164 1165 case QHSTA_M_BAD_CMPL_STATUS_IN: 1166 /* No command complete after a status message */ 1167 printf("%s: Bad Completion Status\n", 1168 device_xname(&sc->sc_dev)); 1169 xs->error = XS_DRIVER_STUFFUP; 1170 break; 1171 1172 case QHSTA_M_AUTO_REQ_SENSE_FAIL: 1173 aprint_error_dev(&sc->sc_dev, "Auto Sense Failed\n"); 1174 xs->error = XS_DRIVER_STUFFUP; 1175 break; 1176 1177 case QHSTA_M_INVALID_DEVICE: 1178 aprint_error_dev(&sc->sc_dev, "Invalid Device\n"); 1179 xs->error = XS_DRIVER_STUFFUP; 1180 break; 1181 1182 case QHSTA_M_NO_AUTO_REQ_SENSE: 1183 /* 1184 * User didn't request sense, but we got a 1185 * check condition. 1186 */ 1187 aprint_error_dev(&sc->sc_dev, "Unexpected Check Condition\n"); 1188 xs->error = XS_DRIVER_STUFFUP; 1189 break; 1190 1191 case QHSTA_M_SXFR_UNKNOWN_ERROR: 1192 aprint_error_dev(&sc->sc_dev, "Unknown Error\n"); 1193 xs->error = XS_DRIVER_STUFFUP; 1194 break; 1195 1196 default: 1197 panic("%s: Unhandled Host Status Error %x", 1198 device_xname(&sc->sc_dev), 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", device_xname(&sc->sc_dev)); 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", device_xname(&sc->sc_dev)); 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 device_xname(&sc->sc_dev)); 1234 break; 1235 1236 case ADV_ASYNC_CARRIER_READY_FAILURE: 1237 /* Carrier Ready failure. */ 1238 printf("%s: Carrier Ready failure!\n", device_xname(&sc->sc_dev)); 1239 break; 1240 1241 default: 1242 break; 1243 } 1244 }
Cache object: e9bf2660f9903969b0ae8995c8131843
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