adv.c revision 1.48
1 /* $NetBSD: adv.c,v 1.48 2018/08/29 16:51:51 rin 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 * 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: adv.c,v 1.48 2018/08/29 16:51:51 rin 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 <dev/scsipi/scsi_all.h> 58 #include <dev/scsipi/scsipi_all.h> 59 #include <dev/scsipi/scsiconf.h> 60 61 #include <dev/ic/advlib.h> 62 #include <dev/ic/adv.h> 63 64 #ifndef DDB 65 #define Debugger() panic("should call debugger here (adv.c)") 66 #endif /* ! DDB */ 67 68 69 /* #define ASC_DEBUG */ 70 71 /******************************************************************************/ 72 73 74 static int adv_alloc_control_data(ASC_SOFTC *); 75 static void adv_free_control_data(ASC_SOFTC *); 76 static int adv_create_ccbs(ASC_SOFTC *, ADV_CCB *, int); 77 static void adv_free_ccb(ASC_SOFTC *, ADV_CCB *); 78 static void adv_reset_ccb(ADV_CCB *); 79 static int adv_init_ccb(ASC_SOFTC *, ADV_CCB *); 80 static ADV_CCB *adv_get_ccb(ASC_SOFTC *); 81 static void adv_queue_ccb(ASC_SOFTC *, ADV_CCB *); 82 static void adv_start_ccbs(ASC_SOFTC *); 83 84 85 static void adv_scsipi_request(struct scsipi_channel *, 86 scsipi_adapter_req_t, void *); 87 static void advminphys(struct buf *); 88 static void adv_narrow_isr_callback(ASC_SOFTC *, ASC_QDONE_INFO *); 89 90 static int adv_poll(ASC_SOFTC *, struct scsipi_xfer *, int); 91 static void adv_timeout(void *); 92 static void adv_watchdog(void *); 93 94 95 /******************************************************************************/ 96 97 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 98 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 99 100 /******************************************************************************/ 101 /* Control Blocks routines */ 102 /******************************************************************************/ 103 104 105 static int 106 adv_alloc_control_data(ASC_SOFTC *sc) 107 { 108 int error; 109 110 /* 111 * Allocate the control blocks. 112 */ 113 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 114 PAGE_SIZE, 0, &sc->sc_control_seg, 1, 115 &sc->sc_control_nsegs, BUS_DMA_NOWAIT)) != 0) { 116 aprint_error_dev(sc->sc_dev, "unable to allocate control " 117 "structures, error = %d\n", error); 118 return (error); 119 } 120 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_control_seg, 121 sc->sc_control_nsegs, sizeof(struct adv_control), 122 (void **) & sc->sc_control, 123 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 124 aprint_error_dev(sc->sc_dev, 125 "unable to map control structures, error = %d\n", error); 126 return (error); 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 adv_control), 132 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 133 &sc->sc_dmamap_control)) != 0) { 134 aprint_error_dev(sc->sc_dev, 135 "unable to create control DMA map, error = %d\n", error); 136 return (error); 137 } 138 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 139 sc->sc_control, sizeof(struct adv_control), NULL, 140 BUS_DMA_NOWAIT)) != 0) { 141 aprint_error_dev(sc->sc_dev, 142 "unable to load control DMA map, error = %d\n", error); 143 return (error); 144 } 145 146 /* 147 * Initialize the overrun_buf address. 148 */ 149 sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + 150 offsetof(struct adv_control, overrun_buf); 151 152 return (0); 153 } 154 155 static void 156 adv_free_control_data(ASC_SOFTC *sc) 157 { 158 159 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control); 160 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control); 161 sc->sc_dmamap_control = NULL; 162 163 bus_dmamem_unmap(sc->sc_dmat, (void *) sc->sc_control, 164 sizeof(struct adv_control)); 165 bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg, 166 sc->sc_control_nsegs); 167 } 168 169 /* 170 * Create a set of ccbs and add them to the free list. Called once 171 * by adv_init(). We return the number of CCBs successfully created. 172 */ 173 static int 174 adv_create_ccbs(ASC_SOFTC *sc, ADV_CCB *ccbstore, int count) 175 { 176 ADV_CCB *ccb; 177 int i, error; 178 179 memset(ccbstore, 0, sizeof(ADV_CCB) * count); 180 for (i = 0; i < count; i++) { 181 ccb = &ccbstore[i]; 182 if ((error = adv_init_ccb(sc, ccb)) != 0) { 183 aprint_error_dev(sc->sc_dev, 184 "unable to initialize ccb, error = %d\n", error); 185 return (i); 186 } 187 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 188 } 189 190 return (i); 191 } 192 193 194 /* 195 * A ccb is put onto the free list. 196 */ 197 static void 198 adv_free_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 199 { 200 int s; 201 202 s = splbio(); 203 adv_reset_ccb(ccb); 204 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 205 splx(s); 206 } 207 208 209 static void 210 adv_reset_ccb(ADV_CCB *ccb) 211 { 212 213 ccb->flags = 0; 214 } 215 216 217 static int 218 adv_init_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 219 { 220 int hashnum, error; 221 222 callout_init(&ccb->ccb_watchdog, 0); 223 224 /* 225 * Create the DMA map for this CCB. 226 */ 227 error = bus_dmamap_create(sc->sc_dmat, 228 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 229 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 230 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 231 if (error) { 232 aprint_error_dev(sc->sc_dev, 233 "unable to create DMA map, error = %d\n", error); 234 return (error); 235 } 236 237 /* 238 * put in the phystokv hash table 239 * Never gets taken out. 240 */ 241 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 242 ADV_CCB_OFF(ccb); 243 hashnum = CCB_HASH(ccb->hashkey); 244 ccb->nexthash = sc->sc_ccbhash[hashnum]; 245 sc->sc_ccbhash[hashnum] = ccb; 246 247 adv_reset_ccb(ccb); 248 return (0); 249 } 250 251 252 /* 253 * Get a free ccb 254 * 255 * If there are none, see if we can allocate a new one 256 */ 257 static ADV_CCB * 258 adv_get_ccb(ASC_SOFTC *sc) 259 { 260 ADV_CCB *ccb = 0; 261 int s; 262 263 s = splbio(); 264 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 265 if (ccb != NULL) { 266 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 267 ccb->flags |= CCB_ALLOC; 268 } 269 splx(s); 270 return (ccb); 271 } 272 273 274 /* 275 * Given a physical address, find the ccb that it corresponds to. 276 */ 277 ADV_CCB * 278 adv_ccb_phys_kv(ASC_SOFTC *sc, u_long ccb_phys) 279 { 280 int hashnum = CCB_HASH(ccb_phys); 281 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 282 283 while (ccb) { 284 if (ccb->hashkey == ccb_phys) 285 break; 286 ccb = ccb->nexthash; 287 } 288 return (ccb); 289 } 290 291 292 /* 293 * Queue a CCB to be sent to the controller, and send it if possible. 294 */ 295 static void 296 adv_queue_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 297 { 298 299 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 300 301 adv_start_ccbs(sc); 302 } 303 304 305 static void 306 adv_start_ccbs(ASC_SOFTC *sc) 307 { 308 ADV_CCB *ccb; 309 310 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 311 if (ccb->flags & CCB_WATCHDOG) 312 callout_stop(&ccb->ccb_watchdog); 313 314 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 315 ccb->flags |= CCB_WATCHDOG; 316 callout_reset(&ccb->ccb_watchdog, 317 (ADV_WATCH_TIMEOUT * hz) / 1000, 318 adv_watchdog, ccb); 319 break; 320 } 321 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 322 323 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 324 callout_reset(&ccb->xs->xs_callout, 325 mstohz(ccb->timeout), adv_timeout, ccb); 326 } 327 } 328 329 330 /******************************************************************************/ 331 /* SCSI layer interfacing routines */ 332 /******************************************************************************/ 333 334 335 int 336 adv_init(ASC_SOFTC *sc) 337 { 338 int warn; 339 340 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 341 aprint_error("adv_init: failed to find signature\n"); 342 return (1); 343 } 344 345 /* 346 * Read the board configuration 347 */ 348 AscInitASC_SOFTC(sc); 349 warn = AscInitFromEEP(sc); 350 if (warn) { 351 aprint_error_dev(sc->sc_dev, "-get: "); 352 switch (warn) { 353 case -1: 354 aprint_normal("Chip is not halted\n"); 355 break; 356 357 case -2: 358 aprint_normal("Couldn't get MicroCode Start" 359 " address\n"); 360 break; 361 362 case ASC_WARN_IO_PORT_ROTATE: 363 aprint_normal("I/O port address modified\n"); 364 break; 365 366 case ASC_WARN_AUTO_CONFIG: 367 aprint_normal("I/O port increment switch enabled\n"); 368 break; 369 370 case ASC_WARN_EEPROM_CHKSUM: 371 aprint_normal("EEPROM checksum error\n"); 372 break; 373 374 case ASC_WARN_IRQ_MODIFIED: 375 aprint_normal("IRQ modified\n"); 376 break; 377 378 case ASC_WARN_CMD_QNG_CONFLICT: 379 aprint_normal("tag queuing enabled w/o disconnects\n"); 380 break; 381 382 default: 383 aprint_normal("unknown warning %d\n", warn); 384 } 385 } 386 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 387 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 388 389 /* 390 * Modify the board configuration 391 */ 392 warn = AscInitFromASC_SOFTC(sc); 393 if (warn) { 394 aprint_error_dev(sc->sc_dev, "-set: "); 395 switch (warn) { 396 case ASC_WARN_CMD_QNG_CONFLICT: 397 aprint_normal("tag queuing enabled w/o disconnects\n"); 398 break; 399 400 case ASC_WARN_AUTO_CONFIG: 401 aprint_normal("I/O port increment switch enabled\n"); 402 break; 403 404 default: 405 aprint_normal("unknown warning %d\n", warn); 406 } 407 } 408 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 409 410 return (0); 411 } 412 413 414 void 415 adv_attach(ASC_SOFTC *sc) 416 { 417 struct scsipi_adapter *adapt = &sc->sc_adapter; 418 struct scsipi_channel *chan = &sc->sc_channel; 419 int i, error; 420 421 /* 422 * Initialize board RISC chip and enable interrupts. 423 */ 424 switch (AscInitDriver(sc)) { 425 case 0: 426 /* AllOK */ 427 break; 428 429 case 1: 430 panic("%s: bad signature", device_xname(sc->sc_dev)); 431 break; 432 433 case 2: 434 panic("%s: unable to load MicroCode", 435 device_xname(sc->sc_dev)); 436 break; 437 438 case 3: 439 panic("%s: unable to initialize MicroCode", 440 device_xname(sc->sc_dev)); 441 break; 442 443 default: 444 panic("%s: unable to initialize board RISC chip", 445 device_xname(sc->sc_dev)); 446 } 447 448 /* 449 * Fill in the scsipi_adapter. 450 */ 451 memset(adapt, 0, sizeof(*adapt)); 452 adapt->adapt_dev = sc->sc_dev; 453 adapt->adapt_nchannels = 1; 454 /* adapt_openings initialized below */ 455 /* adapt_max_periph initialized below */ 456 adapt->adapt_request = adv_scsipi_request; 457 adapt->adapt_minphys = advminphys; 458 459 /* 460 * Fill in the scsipi_channel. 461 */ 462 memset(chan, 0, sizeof(*chan)); 463 chan->chan_adapter = adapt; 464 chan->chan_bustype = &scsi_bustype; 465 chan->chan_channel = 0; 466 chan->chan_ntargets = 8; 467 chan->chan_nluns = 8; 468 chan->chan_id = sc->chip_scsi_id; 469 470 TAILQ_INIT(&sc->sc_free_ccb); 471 TAILQ_INIT(&sc->sc_waiting_ccb); 472 473 /* 474 * Allocate the Control Blocks and the overrun buffer. 475 */ 476 error = adv_alloc_control_data(sc); 477 if (error) 478 return; /* (error) */ 479 480 /* 481 * Create and initialize the Control Blocks. 482 */ 483 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 484 if (i == 0) { 485 aprint_error_dev(sc->sc_dev, 486 "unable to create control blocks\n"); 487 return; /* (ENOMEM) */ ; 488 } else if (i != ADV_MAX_CCB) { 489 aprint_error_dev(sc->sc_dev, 490 "WARNING: only %d of %d control blocks created\n", 491 i, ADV_MAX_CCB); 492 } 493 494 adapt->adapt_openings = i; 495 adapt->adapt_max_periph = adapt->adapt_openings; 496 497 sc->sc_child = config_found(sc->sc_dev, chan, scsiprint); 498 } 499 500 int 501 adv_detach(ASC_SOFTC *sc, int flags) 502 { 503 int rv = 0; 504 505 if (sc->sc_child != NULL) 506 rv = config_detach(sc->sc_child, flags); 507 508 adv_free_control_data(sc); 509 510 return (rv); 511 } 512 513 static void 514 advminphys(struct buf *bp) 515 { 516 517 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 518 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 519 minphys(bp); 520 } 521 522 523 /* 524 * start a scsi operation given the command and the data address. Also needs 525 * the unit, target and lu. 526 */ 527 528 static void 529 adv_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 530 void *arg) 531 { 532 struct scsipi_xfer *xs; 533 struct scsipi_periph *periph; 534 ASC_SOFTC *sc = device_private(chan->chan_adapter->adapt_dev); 535 bus_dma_tag_t dmat = sc->sc_dmat; 536 ADV_CCB *ccb; 537 int s, flags, error, nsegs; 538 539 switch (req) { 540 case ADAPTER_REQ_RUN_XFER: 541 xs = arg; 542 periph = xs->xs_periph; 543 flags = xs->xs_control; 544 545 /* 546 * Get a CCB to use. 547 */ 548 ccb = adv_get_ccb(sc); 549 #ifdef DIAGNOSTIC 550 /* 551 * This should never happen as we track the resources 552 * in the mid-layer. 553 */ 554 if (ccb == NULL) { 555 scsipi_printaddr(periph); 556 printf("unable to allocate ccb\n"); 557 panic("adv_scsipi_request"); 558 } 559 #endif 560 561 ccb->xs = xs; 562 ccb->timeout = xs->timeout; 563 564 /* 565 * Build up the request 566 */ 567 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 568 569 ccb->scsiq.q2.ccb_ptr = 570 sc->sc_dmamap_control->dm_segs[0].ds_addr + 571 ADV_CCB_OFF(ccb); 572 573 ccb->scsiq.cdbptr = &xs->cmd->opcode; 574 ccb->scsiq.q2.cdb_len = xs->cmdlen; 575 ccb->scsiq.q1.target_id = 576 ASC_TID_TO_TARGET_ID(periph->periph_target); 577 ccb->scsiq.q1.target_lun = periph->periph_lun; 578 ccb->scsiq.q2.target_ix = 579 ASC_TIDLUN_TO_IX(periph->periph_target, 580 periph->periph_lun); 581 ccb->scsiq.q1.sense_addr = 582 sc->sc_dmamap_control->dm_segs[0].ds_addr + 583 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 584 ccb->scsiq.q1.sense_len = sizeof(struct scsi_sense_data); 585 586 /* 587 * If there are any outstanding requests for the current 588 * target, then every 255th request send an ORDERED request. 589 * This heuristic tries to retain the benefit of request 590 * sorting while preventing request starvation. 255 is the 591 * max number of tags or pending commands a device may have 592 * outstanding. 593 */ 594 sc->reqcnt[periph->periph_target]++; 595 if (((sc->reqcnt[periph->periph_target] > 0) && 596 (sc->reqcnt[periph->periph_target] % 255) == 0) || 597 xs->bp == NULL || (xs->bp->b_flags & B_ASYNC) == 0) { 598 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 599 } else { 600 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 601 } 602 603 if (xs->datalen) { 604 /* 605 * Map the DMA transfer. 606 */ 607 #ifdef TFS 608 if (flags & SCSI_DATA_UIO) { 609 error = bus_dmamap_load_uio(dmat, 610 ccb->dmamap_xfer, (struct uio *) xs->data, 611 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 612 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 613 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 614 BUS_DMA_WRITE)); 615 } else 616 #endif /* TFS */ 617 { 618 error = bus_dmamap_load(dmat, ccb->dmamap_xfer, 619 xs->data, xs->datalen, NULL, 620 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 621 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 622 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 623 BUS_DMA_WRITE)); 624 } 625 626 switch (error) { 627 case 0: 628 break; 629 630 631 case ENOMEM: 632 case EAGAIN: 633 xs->error = XS_RESOURCE_SHORTAGE; 634 goto out_bad; 635 636 default: 637 xs->error = XS_DRIVER_STUFFUP; 638 if (error == EFBIG) { 639 aprint_error_dev(sc->sc_dev, 640 "adv_scsi_cmd, more than %d" 641 " DMA segments\n", 642 ASC_MAX_SG_LIST); 643 } else { 644 aprint_error_dev(sc->sc_dev, 645 "adv_scsi_cmd, error %d" 646 " loading DMA map\n", error); 647 } 648 649 out_bad: 650 adv_free_ccb(sc, ccb); 651 scsipi_done(xs); 652 return; 653 } 654 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 655 ccb->dmamap_xfer->dm_mapsize, 656 (flags & XS_CTL_DATA_IN) ? 657 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 658 659 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 660 661 for (nsegs = 0; 662 nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 663 ccb->sghead.sg_list[nsegs].addr = 664 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 665 ccb->sghead.sg_list[nsegs].bytes = 666 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 667 } 668 669 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 670 ccb->dmamap_xfer->dm_nsegs; 671 672 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 673 ccb->scsiq.sg_head = &ccb->sghead; 674 ccb->scsiq.q1.data_addr = 0; 675 ccb->scsiq.q1.data_cnt = 0; 676 } else { 677 /* 678 * No data xfer, use non S/G values. 679 */ 680 ccb->scsiq.q1.data_addr = 0; 681 ccb->scsiq.q1.data_cnt = 0; 682 } 683 684 #ifdef ASC_DEBUG 685 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX\n", 686 periph->periph_target, 687 periph->periph_lun, xs->cmd->opcode, 688 (unsigned long)ccb); 689 #endif 690 s = splbio(); 691 adv_queue_ccb(sc, ccb); 692 splx(s); 693 694 if ((flags & XS_CTL_POLL) == 0) 695 return; 696 697 /* Not allowed to use interrupts, poll for completion. */ 698 if (adv_poll(sc, xs, ccb->timeout)) { 699 adv_timeout(ccb); 700 if (adv_poll(sc, xs, ccb->timeout)) 701 adv_timeout(ccb); 702 } 703 return; 704 705 case ADAPTER_REQ_GROW_RESOURCES: 706 /* XXX Not supported. */ 707 return; 708 709 case ADAPTER_REQ_SET_XFER_MODE: 710 { 711 /* 712 * We can't really set the mode, but we know how to 713 * query what the firmware negotiated. 714 */ 715 struct scsipi_xfer_mode *xm = arg; 716 u_int8_t sdtr_data; 717 ASC_SCSI_BIT_ID_TYPE tid_bit; 718 719 tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target); 720 721 xm->xm_mode = 0; 722 xm->xm_period = 0; 723 xm->xm_offset = 0; 724 725 if (sc->init_sdtr & tid_bit) { 726 xm->xm_mode |= PERIPH_CAP_SYNC; 727 sdtr_data = sc->sdtr_data[xm->xm_target]; 728 xm->xm_period = 729 sc->sdtr_period_tbl[(sdtr_data >> 4) & 730 (sc->max_sdtr_index - 1)]; 731 xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET; 732 } 733 734 if (sc->use_tagged_qng & tid_bit) 735 xm->xm_mode |= PERIPH_CAP_TQING; 736 737 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); 738 return; 739 } 740 } 741 } 742 743 int 744 adv_intr(void *arg) 745 { 746 ASC_SOFTC *sc = arg; 747 748 #ifdef ASC_DEBUG 749 int int_pend = FALSE; 750 751 if (ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) { 752 int_pend = TRUE; 753 printf("ISR - "); 754 } 755 #endif 756 AscISR(sc); 757 #ifdef ASC_DEBUG 758 if(int_pend) 759 printf("\n"); 760 #endif 761 762 return (1); 763 } 764 765 766 /* 767 * Poll a particular unit, looking for a particular xs 768 */ 769 static int 770 adv_poll(ASC_SOFTC *sc, struct scsipi_xfer *xs, int count) 771 { 772 773 /* timeouts are in msec, so we loop in 1000 usec cycles */ 774 while (count) { 775 adv_intr(sc); 776 if (xs->xs_status & XS_STS_DONE) 777 return (0); 778 delay(1000); /* only happens in boot so ok */ 779 count--; 780 } 781 return (1); 782 } 783 784 785 static void 786 adv_timeout(void *arg) 787 { 788 ADV_CCB *ccb = arg; 789 struct scsipi_xfer *xs = ccb->xs; 790 struct scsipi_periph *periph = xs->xs_periph; 791 ASC_SOFTC *sc = 792 device_private(periph->periph_channel->chan_adapter->adapt_dev); 793 int s; 794 795 scsipi_printaddr(periph); 796 printf("timed out"); 797 798 s = splbio(); 799 800 /* 801 * If it has been through before, then a previous abort has failed, 802 * don't try abort again, reset the bus instead. 803 */ 804 if (ccb->flags & CCB_ABORT) { 805 /* abort timed out */ 806 printf(" AGAIN. Resetting Bus\n"); 807 /* Lets try resetting the bus! */ 808 if (AscResetBus(sc) == ASC_ERROR) { 809 ccb->timeout = sc->scsi_reset_wait; 810 adv_queue_ccb(sc, ccb); 811 } 812 } else { 813 /* abort the operation that has timed out */ 814 printf("\n"); 815 AscAbortCCB(sc, ccb); 816 ccb->xs->error = XS_TIMEOUT; 817 ccb->timeout = ADV_ABORT_TIMEOUT; 818 ccb->flags |= CCB_ABORT; 819 adv_queue_ccb(sc, ccb); 820 } 821 822 splx(s); 823 } 824 825 826 static void 827 adv_watchdog(void *arg) 828 { 829 ADV_CCB *ccb = arg; 830 struct scsipi_xfer *xs = ccb->xs; 831 struct scsipi_periph *periph = xs->xs_periph; 832 ASC_SOFTC *sc = 833 device_private(periph->periph_channel->chan_adapter->adapt_dev); 834 int s; 835 836 s = splbio(); 837 838 ccb->flags &= ~CCB_WATCHDOG; 839 adv_start_ccbs(sc); 840 841 splx(s); 842 } 843 844 845 /******************************************************************************/ 846 /* NARROW boards Interrupt callbacks */ 847 /******************************************************************************/ 848 849 850 /* 851 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 852 * 853 * Interrupt callback function for the Narrow SCSI Asc Library. 854 */ 855 static void 856 adv_narrow_isr_callback(ASC_SOFTC *sc, ASC_QDONE_INFO *qdonep) 857 { 858 bus_dma_tag_t dmat = sc->sc_dmat; 859 ADV_CCB *ccb; 860 struct scsipi_xfer *xs; 861 struct scsi_sense_data *s1, *s2; 862 863 864 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 865 xs = ccb->xs; 866 867 #ifdef ASC_DEBUG 868 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 869 (unsigned long)ccb, 870 xs->xs_periph->periph_target, 871 xs->xs_periph->periph_lun, xs->cmd->opcode); 872 #endif 873 callout_stop(&ccb->xs->xs_callout); 874 875 /* 876 * If we were a data transfer, unload the map that described 877 * the data buffer. 878 */ 879 if (xs->datalen) { 880 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 881 ccb->dmamap_xfer->dm_mapsize, 882 (xs->xs_control & XS_CTL_DATA_IN) ? 883 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 884 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 885 } 886 if ((ccb->flags & CCB_ALLOC) == 0) { 887 aprint_error_dev(sc->sc_dev, "exiting ccb not allocated!\n"); 888 Debugger(); 889 return; 890 } 891 /* 892 * 'qdonep' contains the command's ending status. 893 */ 894 #ifdef ASC_DEBUG 895 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 896 #endif 897 switch (qdonep->d3.done_stat) { 898 case ASC_QD_NO_ERROR: 899 switch (qdonep->d3.host_stat) { 900 case ASC_QHSTA_NO_ERROR: 901 xs->error = XS_NOERROR; 902 /* 903 * XXX 904 * According to the original Linux driver, xs->resid 905 * should be qdonep->remain_bytes. However, its value 906 * is bogus, which seems like a H/W bug. The best thing 907 * we can do would be to ignore it, assuming that all 908 * data has been successfully transferred... 909 */ 910 xs->resid = 0; 911 break; 912 913 default: 914 /* QHSTA error occurred */ 915 xs->error = XS_DRIVER_STUFFUP; 916 break; 917 } 918 919 /* 920 * If an INQUIRY command completed successfully, then call 921 * the AscInquiryHandling() function to patch bugged boards. 922 */ 923 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 924 (xs->xs_periph->periph_lun == 0) && 925 (xs->datalen - qdonep->remain_bytes) >= 8) { 926 AscInquiryHandling(sc, 927 xs->xs_periph->periph_target & 0x7, 928 (ASC_SCSI_INQUIRY *) xs->data); 929 } 930 break; 931 932 case ASC_QD_WITH_ERROR: 933 switch (qdonep->d3.host_stat) { 934 case ASC_QHSTA_NO_ERROR: 935 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 936 s1 = &ccb->scsi_sense; 937 s2 = &xs->sense.scsi_sense; 938 *s2 = *s1; 939 xs->error = XS_SENSE; 940 } else { 941 xs->error = XS_DRIVER_STUFFUP; 942 } 943 break; 944 945 case ASC_QHSTA_M_SEL_TIMEOUT: 946 xs->error = XS_SELTIMEOUT; 947 break; 948 949 default: 950 /* QHSTA error occurred */ 951 xs->error = XS_DRIVER_STUFFUP; 952 break; 953 } 954 break; 955 956 case ASC_QD_ABORTED_BY_HOST: 957 default: 958 xs->error = XS_DRIVER_STUFFUP; 959 break; 960 } 961 962 adv_free_ccb(sc, ccb); 963 scsipi_done(xs); 964 } 965
Indexes created Tue Sep 23 14:10:03 GMT 2025