1 /* $NetBSD: adv.c,v 1.53 2022/09/25 18:43:32 thorpej Exp $ */ 2 3 /* 4 * Generic driver for the Advanced Systems Inc. Narrow SCSI controllers 5 * 6 * Copyright (c) 1998 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: adv.c,v 1.53 2022/09/25 18:43:32 thorpej Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/callout.h> 39 #include <sys/kernel.h> 40 #include <sys/errno.h> 41 #include <sys/ioctl.h> 42 #include <sys/device.h> 43 #include <sys/buf.h> 44 #include <sys/proc.h> 45 46 #include <sys/bus.h> 47 #include <sys/intr.h> 48 49 #include <dev/scsipi/scsi_all.h> 50 #include <dev/scsipi/scsipi_all.h> 51 #include <dev/scsipi/scsiconf.h> 52 53 #include <dev/ic/advlib.h> 54 #include <dev/ic/adv.h> 55 56 #ifndef DDB 57 #define Debugger() panic("should call debugger here (adv.c)") 58 #endif /* ! DDB */ 59 60 61 /* #define ASC_DEBUG */ 62 63 /******************************************************************************/ 64 65 66 static int adv_alloc_control_data(ASC_SOFTC *); 67 static void adv_free_control_data(ASC_SOFTC *); 68 static int adv_create_ccbs(ASC_SOFTC *, ADV_CCB *, int); 69 static void adv_free_ccb(ASC_SOFTC *, ADV_CCB *); 70 static void adv_reset_ccb(ADV_CCB *); 71 static int adv_init_ccb(ASC_SOFTC *, ADV_CCB *); 72 static ADV_CCB *adv_get_ccb(ASC_SOFTC *); 73 static void adv_queue_ccb(ASC_SOFTC *, ADV_CCB *); 74 static void adv_start_ccbs(ASC_SOFTC *); 75 76 77 static void adv_scsipi_request(struct scsipi_channel *, 78 scsipi_adapter_req_t, void *); 79 static void advminphys(struct buf *); 80 static void adv_narrow_isr_callback(ASC_SOFTC *, ASC_QDONE_INFO *); 81 82 static int adv_poll(ASC_SOFTC *, struct scsipi_xfer *, int); 83 static void adv_timeout(void *); 84 static void adv_watchdog(void *); 85 86 87 /******************************************************************************/ 88 89 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 90 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 91 92 /******************************************************************************/ 93 /* Control Blocks routines */ 94 /******************************************************************************/ 95 96 97 static int 98 adv_alloc_control_data(ASC_SOFTC *sc) 99 { 100 int error; 101 102 /* 103 * Allocate the control blocks. 104 */ 105 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 106 PAGE_SIZE, 0, &sc->sc_control_seg, 1, 107 &sc->sc_control_nsegs, BUS_DMA_NOWAIT)) != 0) { 108 aprint_error_dev(sc->sc_dev, "unable to allocate control " 109 "structures, error = %d\n", error); 110 return (error); 111 } 112 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_control_seg, 113 sc->sc_control_nsegs, sizeof(struct adv_control), 114 (void **) & sc->sc_control, 115 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 116 aprint_error_dev(sc->sc_dev, 117 "unable to map control structures, error = %d\n", error); 118 return (error); 119 } 120 /* 121 * Create and load the DMA map used for the control blocks. 122 */ 123 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 124 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 125 &sc->sc_dmamap_control)) != 0) { 126 aprint_error_dev(sc->sc_dev, 127 "unable to create control DMA map, error = %d\n", error); 128 return (error); 129 } 130 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 131 sc->sc_control, sizeof(struct adv_control), NULL, 132 BUS_DMA_NOWAIT)) != 0) { 133 aprint_error_dev(sc->sc_dev, 134 "unable to load control DMA map, error = %d\n", error); 135 return (error); 136 } 137 138 /* 139 * Initialize the overrun_buf address. 140 */ 141 sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + 142 offsetof(struct adv_control, overrun_buf); 143 144 return (0); 145 } 146 147 static void 148 adv_free_control_data(ASC_SOFTC *sc) 149 { 150 151 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control); 152 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control); 153 sc->sc_dmamap_control = NULL; 154 155 bus_dmamem_unmap(sc->sc_dmat, (void *) sc->sc_control, 156 sizeof(struct adv_control)); 157 bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg, 158 sc->sc_control_nsegs); 159 } 160 161 /* 162 * Create a set of ccbs and add them to the free list. Called once 163 * by adv_init(). We return the number of CCBs successfully created. 164 */ 165 static int 166 adv_create_ccbs(ASC_SOFTC *sc, ADV_CCB *ccbstore, int count) 167 { 168 ADV_CCB *ccb; 169 int i, error; 170 171 memset(ccbstore, 0, sizeof(ADV_CCB) * count); 172 for (i = 0; i < count; i++) { 173 ccb = &ccbstore[i]; 174 if ((error = adv_init_ccb(sc, ccb)) != 0) { 175 aprint_error_dev(sc->sc_dev, 176 "unable to initialize ccb, error = %d\n", error); 177 return (i); 178 } 179 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 180 } 181 182 return (i); 183 } 184 185 186 /* 187 * A ccb is put onto the free list. 188 */ 189 static void 190 adv_free_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 191 { 192 int s; 193 194 s = splbio(); 195 adv_reset_ccb(ccb); 196 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 197 splx(s); 198 } 199 200 201 static void 202 adv_reset_ccb(ADV_CCB *ccb) 203 { 204 205 ccb->flags = 0; 206 } 207 208 209 static int 210 adv_init_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 211 { 212 int hashnum, error; 213 214 callout_init(&ccb->ccb_watchdog, 0); 215 216 /* 217 * Create the DMA map for this CCB. 218 */ 219 error = bus_dmamap_create(sc->sc_dmat, 220 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 221 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 222 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 223 if (error) { 224 aprint_error_dev(sc->sc_dev, 225 "unable to create DMA map, error = %d\n", error); 226 return (error); 227 } 228 229 /* 230 * put in the phystokv hash table 231 * Never gets taken out. 232 */ 233 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 234 ADV_CCB_OFF(ccb); 235 hashnum = CCB_HASH(ccb->hashkey); 236 ccb->nexthash = sc->sc_ccbhash[hashnum]; 237 sc->sc_ccbhash[hashnum] = ccb; 238 239 adv_reset_ccb(ccb); 240 return (0); 241 } 242 243 244 /* 245 * Get a free ccb 246 * 247 * If there are none, see if we can allocate a new one 248 */ 249 static ADV_CCB * 250 adv_get_ccb(ASC_SOFTC *sc) 251 { 252 ADV_CCB *ccb = 0; 253 int s; 254 255 s = splbio(); 256 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 257 if (ccb != NULL) { 258 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 259 ccb->flags |= CCB_ALLOC; 260 } 261 splx(s); 262 return (ccb); 263 } 264 265 266 /* 267 * Given a physical address, find the ccb that it corresponds to. 268 */ 269 ADV_CCB * 270 adv_ccb_phys_kv(ASC_SOFTC *sc, u_long ccb_phys) 271 { 272 int hashnum = CCB_HASH(ccb_phys); 273 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 274 275 while (ccb) { 276 if (ccb->hashkey == ccb_phys) 277 break; 278 ccb = ccb->nexthash; 279 } 280 return (ccb); 281 } 282 283 284 /* 285 * Queue a CCB to be sent to the controller, and send it if possible. 286 */ 287 static void 288 adv_queue_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 289 { 290 291 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 292 293 adv_start_ccbs(sc); 294 } 295 296 297 static void 298 adv_start_ccbs(ASC_SOFTC *sc) 299 { 300 ADV_CCB *ccb; 301 302 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 303 if (ccb->flags & CCB_WATCHDOG) 304 callout_stop(&ccb->ccb_watchdog); 305 306 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 307 ccb->flags |= CCB_WATCHDOG; 308 callout_reset(&ccb->ccb_watchdog, 309 (ADV_WATCH_TIMEOUT * hz) / 1000, 310 adv_watchdog, ccb); 311 break; 312 } 313 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 314 315 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 316 callout_reset(&ccb->xs->xs_callout, 317 mstohz(ccb->timeout), adv_timeout, ccb); 318 } 319 } 320 321 322 /******************************************************************************/ 323 /* SCSI layer interfacing routines */ 324 /******************************************************************************/ 325 326 327 int 328 adv_init(ASC_SOFTC *sc) 329 { 330 int warn; 331 332 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 333 aprint_error("adv_init: failed to find signature\n"); 334 return (1); 335 } 336 337 /* 338 * Read the board configuration 339 */ 340 AscInitASC_SOFTC(sc); 341 warn = AscInitFromEEP(sc); 342 if (warn) { 343 aprint_error_dev(sc->sc_dev, "-get: "); 344 switch (warn) { 345 case -1: 346 aprint_normal("Chip is not halted\n"); 347 break; 348 349 case -2: 350 aprint_normal("Couldn't get MicroCode Start" 351 " address\n"); 352 break; 353 354 case ASC_WARN_IO_PORT_ROTATE: 355 aprint_normal("I/O port address modified\n"); 356 break; 357 358 case ASC_WARN_AUTO_CONFIG: 359 aprint_normal("I/O port increment switch enabled\n"); 360 break; 361 362 case ASC_WARN_EEPROM_CHKSUM: 363 aprint_normal("EEPROM checksum error\n"); 364 break; 365 366 case ASC_WARN_IRQ_MODIFIED: 367 aprint_normal("IRQ modified\n"); 368 break; 369 370 case ASC_WARN_CMD_QNG_CONFLICT: 371 aprint_normal("tag queuing enabled w/o disconnects\n"); 372 break; 373 374 default: 375 aprint_normal("unknown warning %d\n", warn); 376 } 377 } 378 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 379 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 380 381 /* 382 * Modify the board configuration 383 */ 384 warn = AscInitFromASC_SOFTC(sc); 385 if (warn) { 386 aprint_error_dev(sc->sc_dev, "-set: "); 387 switch (warn) { 388 case ASC_WARN_CMD_QNG_CONFLICT: 389 aprint_normal("tag queuing enabled w/o disconnects\n"); 390 break; 391 392 case ASC_WARN_AUTO_CONFIG: 393 aprint_normal("I/O port increment switch enabled\n"); 394 break; 395 396 default: 397 aprint_normal("unknown warning %d\n", warn); 398 } 399 } 400 sc->isr_callback = adv_narrow_isr_callback; 401 402 return (0); 403 } 404 405 406 void 407 adv_attach(ASC_SOFTC *sc) 408 { 409 struct scsipi_adapter *adapt = &sc->sc_adapter; 410 struct scsipi_channel *chan = &sc->sc_channel; 411 int i, error; 412 413 /* 414 * Initialize board RISC chip and enable interrupts. 415 */ 416 switch (AscInitDriver(sc)) { 417 case 0: 418 /* AllOK */ 419 break; 420 421 case 1: 422 panic("%s: bad signature", device_xname(sc->sc_dev)); 423 break; 424 425 case 2: 426 panic("%s: unable to load MicroCode", 427 device_xname(sc->sc_dev)); 428 break; 429 430 case 3: 431 panic("%s: unable to initialize MicroCode", 432 device_xname(sc->sc_dev)); 433 break; 434 435 default: 436 panic("%s: unable to initialize board RISC chip", 437 device_xname(sc->sc_dev)); 438 } 439 440 /* 441 * Fill in the scsipi_adapter. 442 */ 443 memset(adapt, 0, sizeof(*adapt)); 444 adapt->adapt_dev = sc->sc_dev; 445 adapt->adapt_nchannels = 1; 446 /* adapt_openings initialized below */ 447 /* adapt_max_periph initialized below */ 448 adapt->adapt_request = adv_scsipi_request; 449 adapt->adapt_minphys = advminphys; 450 451 /* 452 * Fill in the scsipi_channel. 453 */ 454 memset(chan, 0, sizeof(*chan)); 455 chan->chan_adapter = adapt; 456 chan->chan_bustype = &scsi_bustype; 457 chan->chan_channel = 0; 458 chan->chan_ntargets = 8; 459 chan->chan_nluns = 8; 460 chan->chan_id = sc->chip_scsi_id; 461 462 TAILQ_INIT(&sc->sc_free_ccb); 463 TAILQ_INIT(&sc->sc_waiting_ccb); 464 465 /* 466 * Allocate the Control Blocks and the overrun buffer. 467 */ 468 error = adv_alloc_control_data(sc); 469 if (error) 470 return; /* (error) */ 471 472 /* 473 * Create and initialize the Control Blocks. 474 */ 475 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 476 if (i == 0) { 477 aprint_error_dev(sc->sc_dev, 478 "unable to create control blocks\n"); 479 return; /* (ENOMEM) */ ; 480 } else if (i != ADV_MAX_CCB) { 481 aprint_error_dev(sc->sc_dev, 482 "WARNING: only %d of %d control blocks created\n", 483 i, ADV_MAX_CCB); 484 } 485 486 adapt->adapt_openings = i; 487 adapt->adapt_max_periph = adapt->adapt_openings; 488 489 sc->sc_child = config_found(sc->sc_dev, chan, scsiprint, CFARGS_NONE); 490 } 491 492 int 493 adv_detach(ASC_SOFTC *sc, int flags) 494 { 495 int rv = 0; 496 497 if (sc->sc_child != NULL) 498 rv = config_detach(sc->sc_child, flags); 499 500 adv_free_control_data(sc); 501 502 return (rv); 503 } 504 505 static void 506 advminphys(struct buf *bp) 507 { 508 509 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 510 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 511 minphys(bp); 512 } 513 514 515 /* 516 * start a scsi operation given the command and the data address. Also needs 517 * the unit, target and lu. 518 */ 519 520 static void 521 adv_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 522 void *arg) 523 { 524 struct scsipi_xfer *xs; 525 struct scsipi_periph *periph; 526 ASC_SOFTC *sc = device_private(chan->chan_adapter->adapt_dev); 527 bus_dma_tag_t dmat = sc->sc_dmat; 528 ADV_CCB *ccb; 529 int s, flags, error, nsegs; 530 531 switch (req) { 532 case ADAPTER_REQ_RUN_XFER: 533 xs = arg; 534 periph = xs->xs_periph; 535 flags = xs->xs_control; 536 537 /* 538 * Get a CCB to use. 539 */ 540 ccb = adv_get_ccb(sc); 541 #ifdef DIAGNOSTIC 542 /* 543 * This should never happen as we track the resources 544 * in the mid-layer. 545 */ 546 if (ccb == NULL) { 547 scsipi_printaddr(periph); 548 printf("unable to allocate ccb\n"); 549 panic("adv_scsipi_request"); 550 } 551 #endif 552 553 ccb->xs = xs; 554 ccb->timeout = xs->timeout; 555 556 /* 557 * Build up the request 558 */ 559 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 560 561 ccb->scsiq.q2.ccb_ptr = 562 sc->sc_dmamap_control->dm_segs[0].ds_addr + 563 ADV_CCB_OFF(ccb); 564 565 ccb->scsiq.cdbptr = &xs->cmd->opcode; 566 ccb->scsiq.q2.cdb_len = xs->cmdlen; 567 ccb->scsiq.q1.target_id = 568 ASC_TID_TO_TARGET_ID(periph->periph_target); 569 ccb->scsiq.q1.target_lun = periph->periph_lun; 570 ccb->scsiq.q2.target_ix = 571 ASC_TIDLUN_TO_IX(periph->periph_target, 572 periph->periph_lun); 573 ccb->scsiq.q1.sense_addr = 574 sc->sc_dmamap_control->dm_segs[0].ds_addr + 575 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 576 ccb->scsiq.q1.sense_len = sizeof(struct scsi_sense_data); 577 578 /* 579 * If there are any outstanding requests for the current 580 * target, then every 255th request send an ORDERED request. 581 * This heuristic tries to retain the benefit of request 582 * sorting while preventing request starvation. 255 is the 583 * max number of tags or pending commands a device may have 584 * outstanding. 585 */ 586 sc->reqcnt[periph->periph_target]++; 587 if (((sc->reqcnt[periph->periph_target] > 0) && 588 (sc->reqcnt[periph->periph_target] % 255) == 0) || 589 xs->bp == NULL || (xs->bp->b_flags & B_ASYNC) == 0) { 590 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 591 } else { 592 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 593 } 594 595 if (xs->datalen) { 596 /* 597 * Map the DMA transfer. 598 */ 599 #ifdef TFS 600 if (flags & SCSI_DATA_UIO) { 601 error = bus_dmamap_load_uio(dmat, 602 ccb->dmamap_xfer, (struct uio *) xs->data, 603 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 604 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 605 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 606 BUS_DMA_WRITE)); 607 } else 608 #endif /* TFS */ 609 { 610 error = bus_dmamap_load(dmat, ccb->dmamap_xfer, 611 xs->data, xs->datalen, NULL, 612 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 613 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 614 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 615 BUS_DMA_WRITE)); 616 } 617 618 switch (error) { 619 case 0: 620 break; 621 622 623 case ENOMEM: 624 case EAGAIN: 625 xs->error = XS_RESOURCE_SHORTAGE; 626 goto out_bad; 627 628 default: 629 xs->error = XS_DRIVER_STUFFUP; 630 if (error == EFBIG) { 631 aprint_error_dev(sc->sc_dev, 632 "adv_scsi_cmd, more than %d" 633 " DMA segments\n", 634 ASC_MAX_SG_LIST); 635 } else { 636 aprint_error_dev(sc->sc_dev, 637 "adv_scsi_cmd, error %d" 638 " loading DMA map\n", error); 639 } 640 641 out_bad: 642 adv_free_ccb(sc, ccb); 643 scsipi_done(xs); 644 return; 645 } 646 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 647 ccb->dmamap_xfer->dm_mapsize, 648 (flags & XS_CTL_DATA_IN) ? 649 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 650 651 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 652 653 for (nsegs = 0; 654 nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 655 ccb->sghead.sg_list[nsegs].addr = 656 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 657 ccb->sghead.sg_list[nsegs].bytes = 658 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 659 } 660 661 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 662 ccb->dmamap_xfer->dm_nsegs; 663 664 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 665 ccb->scsiq.sg_head = &ccb->sghead; 666 ccb->scsiq.q1.data_addr = 0; 667 ccb->scsiq.q1.data_cnt = 0; 668 } else { 669 /* 670 * No data xfer, use non S/G values. 671 */ 672 ccb->scsiq.q1.data_addr = 0; 673 ccb->scsiq.q1.data_cnt = 0; 674 } 675 676 #ifdef ASC_DEBUG 677 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX\n", 678 periph->periph_target, 679 periph->periph_lun, xs->cmd->opcode, 680 (unsigned long)ccb); 681 #endif 682 s = splbio(); 683 adv_queue_ccb(sc, ccb); 684 splx(s); 685 686 if ((flags & XS_CTL_POLL) == 0) 687 return; 688 689 /* Not allowed to use interrupts, poll for completion. */ 690 if (adv_poll(sc, xs, ccb->timeout)) { 691 adv_timeout(ccb); 692 if (adv_poll(sc, xs, ccb->timeout)) 693 adv_timeout(ccb); 694 } 695 return; 696 697 case ADAPTER_REQ_GROW_RESOURCES: 698 /* XXX Not supported. */ 699 return; 700 701 case ADAPTER_REQ_SET_XFER_MODE: 702 { 703 /* 704 * We can't really set the mode, but we know how to 705 * query what the firmware negotiated. 706 */ 707 struct scsipi_xfer_mode *xm = arg; 708 u_int8_t sdtr_data; 709 ASC_SCSI_BIT_ID_TYPE tid_bit; 710 711 tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target); 712 713 xm->xm_mode = 0; 714 xm->xm_period = 0; 715 xm->xm_offset = 0; 716 717 if (sc->init_sdtr & tid_bit) { 718 xm->xm_mode |= PERIPH_CAP_SYNC; 719 sdtr_data = sc->sdtr_data[xm->xm_target]; 720 xm->xm_period = 721 sc->sdtr_period_tbl[(sdtr_data >> 4) & 722 (sc->max_sdtr_index - 1)]; 723 xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET; 724 } 725 726 if (sc->use_tagged_qng & tid_bit) 727 xm->xm_mode |= PERIPH_CAP_TQING; 728 729 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); 730 return; 731 } 732 } 733 } 734 735 int 736 adv_intr(void *arg) 737 { 738 ASC_SOFTC *sc = arg; 739 740 #ifdef ASC_DEBUG 741 int int_pend = FALSE; 742 743 if (ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) { 744 int_pend = TRUE; 745 printf("ISR - "); 746 } 747 #endif 748 AscISR(sc); 749 #ifdef ASC_DEBUG 750 if(int_pend) 751 printf("\n"); 752 #endif 753 754 return (1); 755 } 756 757 758 /* 759 * Poll a particular unit, looking for a particular xs 760 */ 761 static int 762 adv_poll(ASC_SOFTC *sc, struct scsipi_xfer *xs, int count) 763 { 764 765 /* timeouts are in msec, so we loop in 1000 usec cycles */ 766 while (count) { 767 adv_intr(sc); 768 if (xs->xs_status & XS_STS_DONE) 769 return (0); 770 delay(1000); /* only happens in boot so ok */ 771 count--; 772 } 773 return (1); 774 } 775 776 777 static void 778 adv_timeout(void *arg) 779 { 780 ADV_CCB *ccb = arg; 781 struct scsipi_xfer *xs = ccb->xs; 782 struct scsipi_periph *periph = xs->xs_periph; 783 ASC_SOFTC *sc = 784 device_private(periph->periph_channel->chan_adapter->adapt_dev); 785 int s; 786 787 scsipi_printaddr(periph); 788 printf("timed out"); 789 790 s = splbio(); 791 792 /* 793 * If it has been through before, then a previous abort has failed, 794 * don't try abort again, reset the bus instead. 795 */ 796 if (ccb->flags & CCB_ABORT) { 797 /* abort timed out */ 798 printf(" AGAIN. Resetting Bus\n"); 799 /* Lets try resetting the bus! */ 800 if (AscResetBus(sc) == ASC_ERROR) { 801 ccb->timeout = sc->scsi_reset_wait; 802 adv_queue_ccb(sc, ccb); 803 } 804 } else { 805 /* abort the operation that has timed out */ 806 printf("\n"); 807 AscAbortCCB(sc, ccb); 808 ccb->xs->error = XS_TIMEOUT; 809 ccb->timeout = ADV_ABORT_TIMEOUT; 810 ccb->flags |= CCB_ABORT; 811 adv_queue_ccb(sc, ccb); 812 } 813 814 splx(s); 815 } 816 817 818 static void 819 adv_watchdog(void *arg) 820 { 821 ADV_CCB *ccb = arg; 822 struct scsipi_xfer *xs = ccb->xs; 823 struct scsipi_periph *periph = xs->xs_periph; 824 ASC_SOFTC *sc = 825 device_private(periph->periph_channel->chan_adapter->adapt_dev); 826 int s; 827 828 s = splbio(); 829 830 ccb->flags &= ~CCB_WATCHDOG; 831 adv_start_ccbs(sc); 832 833 splx(s); 834 } 835 836 837 /******************************************************************************/ 838 /* NARROW boards Interrupt callbacks */ 839 /******************************************************************************/ 840 841 842 /* 843 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 844 * 845 * Interrupt callback function for the Narrow SCSI Asc Library. 846 */ 847 static void 848 adv_narrow_isr_callback(ASC_SOFTC *sc, ASC_QDONE_INFO *qdonep) 849 { 850 bus_dma_tag_t dmat = sc->sc_dmat; 851 ADV_CCB *ccb; 852 struct scsipi_xfer *xs; 853 struct scsi_sense_data *s1, *s2; 854 855 856 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 857 xs = ccb->xs; 858 859 #ifdef ASC_DEBUG 860 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 861 (unsigned long)ccb, 862 xs->xs_periph->periph_target, 863 xs->xs_periph->periph_lun, xs->cmd->opcode); 864 #endif 865 callout_stop(&ccb->xs->xs_callout); 866 867 /* 868 * If we were a data transfer, unload the map that described 869 * the data buffer. 870 */ 871 if (xs->datalen) { 872 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 873 ccb->dmamap_xfer->dm_mapsize, 874 (xs->xs_control & XS_CTL_DATA_IN) ? 875 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 876 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 877 } 878 if ((ccb->flags & CCB_ALLOC) == 0) { 879 aprint_error_dev(sc->sc_dev, "exiting ccb not allocated!\n"); 880 Debugger(); 881 return; 882 } 883 /* 884 * 'qdonep' contains the command's ending status. 885 */ 886 #ifdef ASC_DEBUG 887 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 888 #endif 889 switch (qdonep->d3.done_stat) { 890 case ASC_QD_NO_ERROR: 891 switch (qdonep->d3.host_stat) { 892 case ASC_QHSTA_NO_ERROR: 893 xs->error = XS_NOERROR; 894 /* 895 * XXX 896 * According to the original Linux driver, xs->resid 897 * should be qdonep->remain_bytes. However, its value 898 * is bogus, which seems like a H/W bug. The best thing 899 * we can do would be to ignore it, assuming that all 900 * data has been successfully transferred... 901 */ 902 xs->resid = 0; 903 break; 904 905 default: 906 /* QHSTA error occurred */ 907 xs->error = XS_DRIVER_STUFFUP; 908 break; 909 } 910 911 /* 912 * If an INQUIRY command completed successfully, then call 913 * the AscInquiryHandling() function to patch bugged boards. 914 */ 915 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 916 (xs->xs_periph->periph_lun == 0) && 917 (xs->datalen - qdonep->remain_bytes) >= 8) { 918 AscInquiryHandling(sc, 919 xs->xs_periph->periph_target & 0x7, 920 (ASC_SCSI_INQUIRY *) xs->data); 921 } 922 break; 923 924 case ASC_QD_WITH_ERROR: 925 switch (qdonep->d3.host_stat) { 926 case ASC_QHSTA_NO_ERROR: 927 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 928 s1 = &ccb->scsi_sense; 929 s2 = &xs->sense.scsi_sense; 930 *s2 = *s1; 931 xs->error = XS_SENSE; 932 } else { 933 xs->error = XS_DRIVER_STUFFUP; 934 } 935 break; 936 937 case ASC_QHSTA_M_SEL_TIMEOUT: 938 xs->error = XS_SELTIMEOUT; 939 break; 940 941 default: 942 /* QHSTA error occurred */ 943 xs->error = XS_DRIVER_STUFFUP; 944 break; 945 } 946 break; 947 948 case ASC_QD_ABORTED_BY_HOST: 949 default: 950 xs->error = XS_DRIVER_STUFFUP; 951 break; 952 } 953 954 adv_free_ccb(sc, ccb); 955 scsipi_done(xs); 956 } 957
Indexes created Sat Sep 20 22:09:52 GMT 2025