adv.c revision 1.50.10.1
1 /* $NetBSD: adv.c,v 1.50.10.1 2021/03/21 21:09:12 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 1.50.10.1 2021/03/21 21:09:12 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/malloc.h> 44 #include <sys/buf.h> 45 #include <sys/proc.h> 46 47 #include <sys/bus.h> 48 #include <sys/intr.h> 49 50 #include <dev/scsipi/scsi_all.h> 51 #include <dev/scsipi/scsipi_all.h> 52 #include <dev/scsipi/scsiconf.h> 53 54 #include <dev/ic/advlib.h> 55 #include <dev/ic/adv.h> 56 57 #ifndef DDB 58 #define Debugger() panic("should call debugger here (adv.c)") 59 #endif /* ! DDB */ 60 61 62 /* #define ASC_DEBUG */ 63 64 /******************************************************************************/ 65 66 67 static int adv_alloc_control_data(ASC_SOFTC *); 68 static void adv_free_control_data(ASC_SOFTC *); 69 static int adv_create_ccbs(ASC_SOFTC *, ADV_CCB *, int); 70 static void adv_free_ccb(ASC_SOFTC *, ADV_CCB *); 71 static void adv_reset_ccb(ADV_CCB *); 72 static int adv_init_ccb(ASC_SOFTC *, ADV_CCB *); 73 static ADV_CCB *adv_get_ccb(ASC_SOFTC *); 74 static void adv_queue_ccb(ASC_SOFTC *, ADV_CCB *); 75 static void adv_start_ccbs(ASC_SOFTC *); 76 77 78 static void adv_scsipi_request(struct scsipi_channel *, 79 scsipi_adapter_req_t, void *); 80 static void advminphys(struct buf *); 81 static void adv_narrow_isr_callback(ASC_SOFTC *, ASC_QDONE_INFO *); 82 83 static int adv_poll(ASC_SOFTC *, struct scsipi_xfer *, int); 84 static void adv_timeout(void *); 85 static void adv_watchdog(void *); 86 87 88 /******************************************************************************/ 89 90 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 91 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 92 93 /******************************************************************************/ 94 /* Control Blocks routines */ 95 /******************************************************************************/ 96 97 98 static int 99 adv_alloc_control_data(ASC_SOFTC *sc) 100 { 101 int error; 102 103 /* 104 * Allocate the control blocks. 105 */ 106 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 107 PAGE_SIZE, 0, &sc->sc_control_seg, 1, 108 &sc->sc_control_nsegs, BUS_DMA_NOWAIT)) != 0) { 109 aprint_error_dev(sc->sc_dev, "unable to allocate control " 110 "structures, error = %d\n", error); 111 return (error); 112 } 113 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_control_seg, 114 sc->sc_control_nsegs, sizeof(struct adv_control), 115 (void **) & sc->sc_control, 116 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 117 aprint_error_dev(sc->sc_dev, 118 "unable to map control structures, error = %d\n", error); 119 return (error); 120 } 121 /* 122 * Create and load the DMA map used for the control blocks. 123 */ 124 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 125 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 126 &sc->sc_dmamap_control)) != 0) { 127 aprint_error_dev(sc->sc_dev, 128 "unable to create control DMA map, error = %d\n", error); 129 return (error); 130 } 131 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 132 sc->sc_control, sizeof(struct adv_control), NULL, 133 BUS_DMA_NOWAIT)) != 0) { 134 aprint_error_dev(sc->sc_dev, 135 "unable to load control DMA map, error = %d\n", error); 136 return (error); 137 } 138 139 /* 140 * Initialize the overrun_buf address. 141 */ 142 sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + 143 offsetof(struct adv_control, overrun_buf); 144 145 return (0); 146 } 147 148 static void 149 adv_free_control_data(ASC_SOFTC *sc) 150 { 151 152 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control); 153 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control); 154 sc->sc_dmamap_control = NULL; 155 156 bus_dmamem_unmap(sc->sc_dmat, (void *) sc->sc_control, 157 sizeof(struct adv_control)); 158 bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg, 159 sc->sc_control_nsegs); 160 } 161 162 /* 163 * Create a set of ccbs and add them to the free list. Called once 164 * by adv_init(). We return the number of CCBs successfully created. 165 */ 166 static int 167 adv_create_ccbs(ASC_SOFTC *sc, ADV_CCB *ccbstore, int count) 168 { 169 ADV_CCB *ccb; 170 int i, error; 171 172 memset(ccbstore, 0, sizeof(ADV_CCB) * count); 173 for (i = 0; i < count; i++) { 174 ccb = &ccbstore[i]; 175 if ((error = adv_init_ccb(sc, ccb)) != 0) { 176 aprint_error_dev(sc->sc_dev, 177 "unable to initialize ccb, error = %d\n", error); 178 return (i); 179 } 180 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 181 } 182 183 return (i); 184 } 185 186 187 /* 188 * A ccb is put onto the free list. 189 */ 190 static void 191 adv_free_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 192 { 193 int s; 194 195 s = splbio(); 196 adv_reset_ccb(ccb); 197 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 198 splx(s); 199 } 200 201 202 static void 203 adv_reset_ccb(ADV_CCB *ccb) 204 { 205 206 ccb->flags = 0; 207 } 208 209 210 static int 211 adv_init_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 212 { 213 int hashnum, error; 214 215 callout_init(&ccb->ccb_watchdog, 0); 216 217 /* 218 * Create the DMA map for this CCB. 219 */ 220 error = bus_dmamap_create(sc->sc_dmat, 221 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 222 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 223 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 224 if (error) { 225 aprint_error_dev(sc->sc_dev, 226 "unable to create DMA map, error = %d\n", error); 227 return (error); 228 } 229 230 /* 231 * put in the phystokv hash table 232 * Never gets taken out. 233 */ 234 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 235 ADV_CCB_OFF(ccb); 236 hashnum = CCB_HASH(ccb->hashkey); 237 ccb->nexthash = sc->sc_ccbhash[hashnum]; 238 sc->sc_ccbhash[hashnum] = ccb; 239 240 adv_reset_ccb(ccb); 241 return (0); 242 } 243 244 245 /* 246 * Get a free ccb 247 * 248 * If there are none, see if we can allocate a new one 249 */ 250 static ADV_CCB * 251 adv_get_ccb(ASC_SOFTC *sc) 252 { 253 ADV_CCB *ccb = 0; 254 int s; 255 256 s = splbio(); 257 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 258 if (ccb != NULL) { 259 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 260 ccb->flags |= CCB_ALLOC; 261 } 262 splx(s); 263 return (ccb); 264 } 265 266 267 /* 268 * Given a physical address, find the ccb that it corresponds to. 269 */ 270 ADV_CCB * 271 adv_ccb_phys_kv(ASC_SOFTC *sc, u_long ccb_phys) 272 { 273 int hashnum = CCB_HASH(ccb_phys); 274 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 275 276 while (ccb) { 277 if (ccb->hashkey == ccb_phys) 278 break; 279 ccb = ccb->nexthash; 280 } 281 return (ccb); 282 } 283 284 285 /* 286 * Queue a CCB to be sent to the controller, and send it if possible. 287 */ 288 static void 289 adv_queue_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 290 { 291 292 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 293 294 adv_start_ccbs(sc); 295 } 296 297 298 static void 299 adv_start_ccbs(ASC_SOFTC *sc) 300 { 301 ADV_CCB *ccb; 302 303 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 304 if (ccb->flags & CCB_WATCHDOG) 305 callout_stop(&ccb->ccb_watchdog); 306 307 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 308 ccb->flags |= CCB_WATCHDOG; 309 callout_reset(&ccb->ccb_watchdog, 310 (ADV_WATCH_TIMEOUT * hz) / 1000, 311 adv_watchdog, ccb); 312 break; 313 } 314 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 315 316 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 317 callout_reset(&ccb->xs->xs_callout, 318 mstohz(ccb->timeout), adv_timeout, ccb); 319 } 320 } 321 322 323 /******************************************************************************/ 324 /* SCSI layer interfacing routines */ 325 /******************************************************************************/ 326 327 328 int 329 adv_init(ASC_SOFTC *sc) 330 { 331 int warn; 332 333 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 334 aprint_error("adv_init: failed to find signature\n"); 335 return (1); 336 } 337 338 /* 339 * Read the board configuration 340 */ 341 AscInitASC_SOFTC(sc); 342 warn = AscInitFromEEP(sc); 343 if (warn) { 344 aprint_error_dev(sc->sc_dev, "-get: "); 345 switch (warn) { 346 case -1: 347 aprint_normal("Chip is not halted\n"); 348 break; 349 350 case -2: 351 aprint_normal("Couldn't get MicroCode Start" 352 " address\n"); 353 break; 354 355 case ASC_WARN_IO_PORT_ROTATE: 356 aprint_normal("I/O port address modified\n"); 357 break; 358 359 case ASC_WARN_AUTO_CONFIG: 360 aprint_normal("I/O port increment switch enabled\n"); 361 break; 362 363 case ASC_WARN_EEPROM_CHKSUM: 364 aprint_normal("EEPROM checksum error\n"); 365 break; 366 367 case ASC_WARN_IRQ_MODIFIED: 368 aprint_normal("IRQ modified\n"); 369 break; 370 371 case ASC_WARN_CMD_QNG_CONFLICT: 372 aprint_normal("tag queuing enabled w/o disconnects\n"); 373 break; 374 375 default: 376 aprint_normal("unknown warning %d\n", warn); 377 } 378 } 379 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 380 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 381 382 /* 383 * Modify the board configuration 384 */ 385 warn = AscInitFromASC_SOFTC(sc); 386 if (warn) { 387 aprint_error_dev(sc->sc_dev, "-set: "); 388 switch (warn) { 389 case ASC_WARN_CMD_QNG_CONFLICT: 390 aprint_normal("tag queuing enabled w/o disconnects\n"); 391 break; 392 393 case ASC_WARN_AUTO_CONFIG: 394 aprint_normal("I/O port increment switch enabled\n"); 395 break; 396 397 default: 398 aprint_normal("unknown warning %d\n", warn); 399 } 400 } 401 sc->isr_callback = adv_narrow_isr_callback; 402 403 return (0); 404 } 405 406 407 void 408 adv_attach(ASC_SOFTC *sc) 409 { 410 struct scsipi_adapter *adapt = &sc->sc_adapter; 411 struct scsipi_channel *chan = &sc->sc_channel; 412 int i, error; 413 414 /* 415 * Initialize board RISC chip and enable interrupts. 416 */ 417 switch (AscInitDriver(sc)) { 418 case 0: 419 /* AllOK */ 420 break; 421 422 case 1: 423 panic("%s: bad signature", device_xname(sc->sc_dev)); 424 break; 425 426 case 2: 427 panic("%s: unable to load MicroCode", 428 device_xname(sc->sc_dev)); 429 break; 430 431 case 3: 432 panic("%s: unable to initialize MicroCode", 433 device_xname(sc->sc_dev)); 434 break; 435 436 default: 437 panic("%s: unable to initialize board RISC chip", 438 device_xname(sc->sc_dev)); 439 } 440 441 /* 442 * Fill in the scsipi_adapter. 443 */ 444 memset(adapt, 0, sizeof(*adapt)); 445 adapt->adapt_dev = sc->sc_dev; 446 adapt->adapt_nchannels = 1; 447 /* adapt_openings initialized below */ 448 /* adapt_max_periph initialized below */ 449 adapt->adapt_request = adv_scsipi_request; 450 adapt->adapt_minphys = advminphys; 451 452 /* 453 * Fill in the scsipi_channel. 454 */ 455 memset(chan, 0, sizeof(*chan)); 456 chan->chan_adapter = adapt; 457 chan->chan_bustype = &scsi_bustype; 458 chan->chan_channel = 0; 459 chan->chan_ntargets = 8; 460 chan->chan_nluns = 8; 461 chan->chan_id = sc->chip_scsi_id; 462 463 TAILQ_INIT(&sc->sc_free_ccb); 464 TAILQ_INIT(&sc->sc_waiting_ccb); 465 466 /* 467 * Allocate the Control Blocks and the overrun buffer. 468 */ 469 error = adv_alloc_control_data(sc); 470 if (error) 471 return; /* (error) */ 472 473 /* 474 * Create and initialize the Control Blocks. 475 */ 476 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 477 if (i == 0) { 478 aprint_error_dev(sc->sc_dev, 479 "unable to create control blocks\n"); 480 return; /* (ENOMEM) */ ; 481 } else if (i != ADV_MAX_CCB) { 482 aprint_error_dev(sc->sc_dev, 483 "WARNING: only %d of %d control blocks created\n", 484 i, ADV_MAX_CCB); 485 } 486 487 adapt->adapt_openings = i; 488 adapt->adapt_max_periph = adapt->adapt_openings; 489 490 sc->sc_child = config_found(sc->sc_dev, chan, scsiprint, CFARG_EOL); 491 } 492 493 int 494 adv_detach(ASC_SOFTC *sc, int flags) 495 { 496 int rv = 0; 497 498 if (sc->sc_child != NULL) 499 rv = config_detach(sc->sc_child, flags); 500 501 adv_free_control_data(sc); 502 503 return (rv); 504 } 505 506 static void 507 advminphys(struct buf *bp) 508 { 509 510 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 511 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 512 minphys(bp); 513 } 514 515 516 /* 517 * start a scsi operation given the command and the data address. Also needs 518 * the unit, target and lu. 519 */ 520 521 static void 522 adv_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 523 void *arg) 524 { 525 struct scsipi_xfer *xs; 526 struct scsipi_periph *periph; 527 ASC_SOFTC *sc = device_private(chan->chan_adapter->adapt_dev); 528 bus_dma_tag_t dmat = sc->sc_dmat; 529 ADV_CCB *ccb; 530 int s, flags, error, nsegs; 531 532 switch (req) { 533 case ADAPTER_REQ_RUN_XFER: 534 xs = arg; 535 periph = xs->xs_periph; 536 flags = xs->xs_control; 537 538 /* 539 * Get a CCB to use. 540 */ 541 ccb = adv_get_ccb(sc); 542 #ifdef DIAGNOSTIC 543 /* 544 * This should never happen as we track the resources 545 * in the mid-layer. 546 */ 547 if (ccb == NULL) { 548 scsipi_printaddr(periph); 549 printf("unable to allocate ccb\n"); 550 panic("adv_scsipi_request"); 551 } 552 #endif 553 554 ccb->xs = xs; 555 ccb->timeout = xs->timeout; 556 557 /* 558 * Build up the request 559 */ 560 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 561 562 ccb->scsiq.q2.ccb_ptr = 563 sc->sc_dmamap_control->dm_segs[0].ds_addr + 564 ADV_CCB_OFF(ccb); 565 566 ccb->scsiq.cdbptr = &xs->cmd->opcode; 567 ccb->scsiq.q2.cdb_len = xs->cmdlen; 568 ccb->scsiq.q1.target_id = 569 ASC_TID_TO_TARGET_ID(periph->periph_target); 570 ccb->scsiq.q1.target_lun = periph->periph_lun; 571 ccb->scsiq.q2.target_ix = 572 ASC_TIDLUN_TO_IX(periph->periph_target, 573 periph->periph_lun); 574 ccb->scsiq.q1.sense_addr = 575 sc->sc_dmamap_control->dm_segs[0].ds_addr + 576 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 577 ccb->scsiq.q1.sense_len = sizeof(struct scsi_sense_data); 578 579 /* 580 * If there are any outstanding requests for the current 581 * target, then every 255th request send an ORDERED request. 582 * This heuristic tries to retain the benefit of request 583 * sorting while preventing request starvation. 255 is the 584 * max number of tags or pending commands a device may have 585 * outstanding. 586 */ 587 sc->reqcnt[periph->periph_target]++; 588 if (((sc->reqcnt[periph->periph_target] > 0) && 589 (sc->reqcnt[periph->periph_target] % 255) == 0) || 590 xs->bp == NULL || (xs->bp->b_flags & B_ASYNC) == 0) { 591 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 592 } else { 593 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 594 } 595 596 if (xs->datalen) { 597 /* 598 * Map the DMA transfer. 599 */ 600 #ifdef TFS 601 if (flags & SCSI_DATA_UIO) { 602 error = bus_dmamap_load_uio(dmat, 603 ccb->dmamap_xfer, (struct uio *) xs->data, 604 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 605 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 606 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 607 BUS_DMA_WRITE)); 608 } else 609 #endif /* TFS */ 610 { 611 error = bus_dmamap_load(dmat, ccb->dmamap_xfer, 612 xs->data, xs->datalen, NULL, 613 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 614 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 615 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 616 BUS_DMA_WRITE)); 617 } 618 619 switch (error) { 620 case 0: 621 break; 622 623 624 case ENOMEM: 625 case EAGAIN: 626 xs->error = XS_RESOURCE_SHORTAGE; 627 goto out_bad; 628 629 default: 630 xs->error = XS_DRIVER_STUFFUP; 631 if (error == EFBIG) { 632 aprint_error_dev(sc->sc_dev, 633 "adv_scsi_cmd, more than %d" 634 " DMA segments\n", 635 ASC_MAX_SG_LIST); 636 } else { 637 aprint_error_dev(sc->sc_dev, 638 "adv_scsi_cmd, error %d" 639 " loading DMA map\n", error); 640 } 641 642 out_bad: 643 adv_free_ccb(sc, ccb); 644 scsipi_done(xs); 645 return; 646 } 647 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 648 ccb->dmamap_xfer->dm_mapsize, 649 (flags & XS_CTL_DATA_IN) ? 650 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 651 652 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 653 654 for (nsegs = 0; 655 nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 656 ccb->sghead.sg_list[nsegs].addr = 657 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 658 ccb->sghead.sg_list[nsegs].bytes = 659 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 660 } 661 662 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 663 ccb->dmamap_xfer->dm_nsegs; 664 665 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 666 ccb->scsiq.sg_head = &ccb->sghead; 667 ccb->scsiq.q1.data_addr = 0; 668 ccb->scsiq.q1.data_cnt = 0; 669 } else { 670 /* 671 * No data xfer, use non S/G values. 672 */ 673 ccb->scsiq.q1.data_addr = 0; 674 ccb->scsiq.q1.data_cnt = 0; 675 } 676 677 #ifdef ASC_DEBUG 678 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX\n", 679 periph->periph_target, 680 periph->periph_lun, xs->cmd->opcode, 681 (unsigned long)ccb); 682 #endif 683 s = splbio(); 684 adv_queue_ccb(sc, ccb); 685 splx(s); 686 687 if ((flags & XS_CTL_POLL) == 0) 688 return; 689 690 /* Not allowed to use interrupts, poll for completion. */ 691 if (adv_poll(sc, xs, ccb->timeout)) { 692 adv_timeout(ccb); 693 if (adv_poll(sc, xs, ccb->timeout)) 694 adv_timeout(ccb); 695 } 696 return; 697 698 case ADAPTER_REQ_GROW_RESOURCES: 699 /* XXX Not supported. */ 700 return; 701 702 case ADAPTER_REQ_SET_XFER_MODE: 703 { 704 /* 705 * We can't really set the mode, but we know how to 706 * query what the firmware negotiated. 707 */ 708 struct scsipi_xfer_mode *xm = arg; 709 u_int8_t sdtr_data; 710 ASC_SCSI_BIT_ID_TYPE tid_bit; 711 712 tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target); 713 714 xm->xm_mode = 0; 715 xm->xm_period = 0; 716 xm->xm_offset = 0; 717 718 if (sc->init_sdtr & tid_bit) { 719 xm->xm_mode |= PERIPH_CAP_SYNC; 720 sdtr_data = sc->sdtr_data[xm->xm_target]; 721 xm->xm_period = 722 sc->sdtr_period_tbl[(sdtr_data >> 4) & 723 (sc->max_sdtr_index - 1)]; 724 xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET; 725 } 726 727 if (sc->use_tagged_qng & tid_bit) 728 xm->xm_mode |= PERIPH_CAP_TQING; 729 730 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); 731 return; 732 } 733 } 734 } 735 736 int 737 adv_intr(void *arg) 738 { 739 ASC_SOFTC *sc = arg; 740 741 #ifdef ASC_DEBUG 742 int int_pend = FALSE; 743 744 if (ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) { 745 int_pend = TRUE; 746 printf("ISR - "); 747 } 748 #endif 749 AscISR(sc); 750 #ifdef ASC_DEBUG 751 if(int_pend) 752 printf("\n"); 753 #endif 754 755 return (1); 756 } 757 758 759 /* 760 * Poll a particular unit, looking for a particular xs 761 */ 762 static int 763 adv_poll(ASC_SOFTC *sc, struct scsipi_xfer *xs, int count) 764 { 765 766 /* timeouts are in msec, so we loop in 1000 usec cycles */ 767 while (count) { 768 adv_intr(sc); 769 if (xs->xs_status & XS_STS_DONE) 770 return (0); 771 delay(1000); /* only happens in boot so ok */ 772 count--; 773 } 774 return (1); 775 } 776 777 778 static void 779 adv_timeout(void *arg) 780 { 781 ADV_CCB *ccb = arg; 782 struct scsipi_xfer *xs = ccb->xs; 783 struct scsipi_periph *periph = xs->xs_periph; 784 ASC_SOFTC *sc = 785 device_private(periph->periph_channel->chan_adapter->adapt_dev); 786 int s; 787 788 scsipi_printaddr(periph); 789 printf("timed out"); 790 791 s = splbio(); 792 793 /* 794 * If it has been through before, then a previous abort has failed, 795 * don't try abort again, reset the bus instead. 796 */ 797 if (ccb->flags & CCB_ABORT) { 798 /* abort timed out */ 799 printf(" AGAIN. Resetting Bus\n"); 800 /* Lets try resetting the bus! */ 801 if (AscResetBus(sc) == ASC_ERROR) { 802 ccb->timeout = sc->scsi_reset_wait; 803 adv_queue_ccb(sc, ccb); 804 } 805 } else { 806 /* abort the operation that has timed out */ 807 printf("\n"); 808 AscAbortCCB(sc, ccb); 809 ccb->xs->error = XS_TIMEOUT; 810 ccb->timeout = ADV_ABORT_TIMEOUT; 811 ccb->flags |= CCB_ABORT; 812 adv_queue_ccb(sc, ccb); 813 } 814 815 splx(s); 816 } 817 818 819 static void 820 adv_watchdog(void *arg) 821 { 822 ADV_CCB *ccb = arg; 823 struct scsipi_xfer *xs = ccb->xs; 824 struct scsipi_periph *periph = xs->xs_periph; 825 ASC_SOFTC *sc = 826 device_private(periph->periph_channel->chan_adapter->adapt_dev); 827 int s; 828 829 s = splbio(); 830 831 ccb->flags &= ~CCB_WATCHDOG; 832 adv_start_ccbs(sc); 833 834 splx(s); 835 } 836 837 838 /******************************************************************************/ 839 /* NARROW boards Interrupt callbacks */ 840 /******************************************************************************/ 841 842 843 /* 844 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 845 * 846 * Interrupt callback function for the Narrow SCSI Asc Library. 847 */ 848 static void 849 adv_narrow_isr_callback(ASC_SOFTC *sc, ASC_QDONE_INFO *qdonep) 850 { 851 bus_dma_tag_t dmat = sc->sc_dmat; 852 ADV_CCB *ccb; 853 struct scsipi_xfer *xs; 854 struct scsi_sense_data *s1, *s2; 855 856 857 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 858 xs = ccb->xs; 859 860 #ifdef ASC_DEBUG 861 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 862 (unsigned long)ccb, 863 xs->xs_periph->periph_target, 864 xs->xs_periph->periph_lun, xs->cmd->opcode); 865 #endif 866 callout_stop(&ccb->xs->xs_callout); 867 868 /* 869 * If we were a data transfer, unload the map that described 870 * the data buffer. 871 */ 872 if (xs->datalen) { 873 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 874 ccb->dmamap_xfer->dm_mapsize, 875 (xs->xs_control & XS_CTL_DATA_IN) ? 876 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 877 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 878 } 879 if ((ccb->flags & CCB_ALLOC) == 0) { 880 aprint_error_dev(sc->sc_dev, "exiting ccb not allocated!\n"); 881 Debugger(); 882 return; 883 } 884 /* 885 * 'qdonep' contains the command's ending status. 886 */ 887 #ifdef ASC_DEBUG 888 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 889 #endif 890 switch (qdonep->d3.done_stat) { 891 case ASC_QD_NO_ERROR: 892 switch (qdonep->d3.host_stat) { 893 case ASC_QHSTA_NO_ERROR: 894 xs->error = XS_NOERROR; 895 /* 896 * XXX 897 * According to the original Linux driver, xs->resid 898 * should be qdonep->remain_bytes. However, its value 899 * is bogus, which seems like a H/W bug. The best thing 900 * we can do would be to ignore it, assuming that all 901 * data has been successfully transferred... 902 */ 903 xs->resid = 0; 904 break; 905 906 default: 907 /* QHSTA error occurred */ 908 xs->error = XS_DRIVER_STUFFUP; 909 break; 910 } 911 912 /* 913 * If an INQUIRY command completed successfully, then call 914 * the AscInquiryHandling() function to patch bugged boards. 915 */ 916 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 917 (xs->xs_periph->periph_lun == 0) && 918 (xs->datalen - qdonep->remain_bytes) >= 8) { 919 AscInquiryHandling(sc, 920 xs->xs_periph->periph_target & 0x7, 921 (ASC_SCSI_INQUIRY *) xs->data); 922 } 923 break; 924 925 case ASC_QD_WITH_ERROR: 926 switch (qdonep->d3.host_stat) { 927 case ASC_QHSTA_NO_ERROR: 928 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 929 s1 = &ccb->scsi_sense; 930 s2 = &xs->sense.scsi_sense; 931 *s2 = *s1; 932 xs->error = XS_SENSE; 933 } else { 934 xs->error = XS_DRIVER_STUFFUP; 935 } 936 break; 937 938 case ASC_QHSTA_M_SEL_TIMEOUT: 939 xs->error = XS_SELTIMEOUT; 940 break; 941 942 default: 943 /* QHSTA error occurred */ 944 xs->error = XS_DRIVER_STUFFUP; 945 break; 946 } 947 break; 948 949 case ASC_QD_ABORTED_BY_HOST: 950 default: 951 xs->error = XS_DRIVER_STUFFUP; 952 break; 953 } 954 955 adv_free_ccb(sc, ccb); 956 scsipi_done(xs); 957 } 958
Indexes created Tue Oct 21 05:10:09 GMT 2025