1 /* $NetBSD: adv.c,v 1.37 2005/12/11 12:21:25 christos 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@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 1.37 2005/12/11 12:21:25 christos 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 <machine/bus.h> 56 #include <machine/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/advlib.h> 65 #include <dev/ic/adv.h> 66 67 #ifndef DDB 68 #define Debugger() panic("should call debugger here (adv.c)") 69 #endif /* ! DDB */ 70 71 72 /* #define ASC_DEBUG */ 73 74 /******************************************************************************/ 75 76 77 static int adv_alloc_control_data(ASC_SOFTC *); 78 static void adv_free_control_data(ASC_SOFTC *); 79 static int adv_create_ccbs(ASC_SOFTC *, ADV_CCB *, int); 80 static void adv_free_ccb(ASC_SOFTC *, ADV_CCB *); 81 static void adv_reset_ccb(ADV_CCB *); 82 static int adv_init_ccb(ASC_SOFTC *, ADV_CCB *); 83 static ADV_CCB *adv_get_ccb(ASC_SOFTC *); 84 static void adv_queue_ccb(ASC_SOFTC *, ADV_CCB *); 85 static void adv_start_ccbs(ASC_SOFTC *); 86 87 88 static void adv_scsipi_request(struct scsipi_channel *, 89 scsipi_adapter_req_t, void *); 90 static void advminphys(struct buf *); 91 static void adv_narrow_isr_callback(ASC_SOFTC *, ASC_QDONE_INFO *); 92 93 static int adv_poll(ASC_SOFTC *, struct scsipi_xfer *, int); 94 static void adv_timeout(void *); 95 static void adv_watchdog(void *); 96 97 98 /******************************************************************************/ 99 100 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 101 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 102 103 /******************************************************************************/ 104 /* Control Blocks routines */ 105 /******************************************************************************/ 106 107 108 static int 109 adv_alloc_control_data(sc) 110 ASC_SOFTC *sc; 111 { 112 int error; 113 114 /* 115 * Allocate the control blocks. 116 */ 117 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 118 PAGE_SIZE, 0, &sc->sc_control_seg, 1, 119 &sc->sc_control_nsegs, BUS_DMA_NOWAIT)) != 0) { 120 printf("%s: unable to allocate control structures," 121 " error = %d\n", sc->sc_dev.dv_xname, error); 122 return (error); 123 } 124 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_control_seg, 125 sc->sc_control_nsegs, sizeof(struct adv_control), 126 (caddr_t *) & sc->sc_control, 127 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 128 printf("%s: unable to map control structures, error = %d\n", 129 sc->sc_dev.dv_xname, error); 130 return (error); 131 } 132 /* 133 * Create and load the DMA map used for the control blocks. 134 */ 135 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 136 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 137 &sc->sc_dmamap_control)) != 0) { 138 printf("%s: unable to create control DMA map, error = %d\n", 139 sc->sc_dev.dv_xname, error); 140 return (error); 141 } 142 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 143 sc->sc_control, sizeof(struct adv_control), NULL, 144 BUS_DMA_NOWAIT)) != 0) { 145 printf("%s: unable to load control DMA map, error = %d\n", 146 sc->sc_dev.dv_xname, error); 147 return (error); 148 } 149 150 /* 151 * Initialize the overrun_buf address. 152 */ 153 sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + 154 offsetof(struct adv_control, overrun_buf); 155 156 return (0); 157 } 158 159 static void 160 adv_free_control_data(sc) 161 ASC_SOFTC *sc; 162 { 163 164 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control); 165 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control); 166 sc->sc_dmamap_control = NULL; 167 168 bus_dmamem_unmap(sc->sc_dmat, (caddr_t) sc->sc_control, 169 sizeof(struct adv_control)); 170 bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg, 171 sc->sc_control_nsegs); 172 } 173 174 /* 175 * Create a set of ccbs and add them to the free list. Called once 176 * by adv_init(). We return the number of CCBs successfully created. 177 */ 178 static int 179 adv_create_ccbs(sc, ccbstore, count) 180 ASC_SOFTC *sc; 181 ADV_CCB *ccbstore; 182 int count; 183 { 184 ADV_CCB *ccb; 185 int i, error; 186 187 memset(ccbstore, 0, sizeof(ADV_CCB) * count); 188 for (i = 0; i < count; i++) { 189 ccb = &ccbstore[i]; 190 if ((error = adv_init_ccb(sc, ccb)) != 0) { 191 printf("%s: unable to initialize ccb, error = %d\n", 192 sc->sc_dev.dv_xname, error); 193 return (i); 194 } 195 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 196 } 197 198 return (i); 199 } 200 201 202 /* 203 * A ccb is put onto the free list. 204 */ 205 static void 206 adv_free_ccb(sc, ccb) 207 ASC_SOFTC *sc; 208 ADV_CCB *ccb; 209 { 210 int s; 211 212 s = splbio(); 213 adv_reset_ccb(ccb); 214 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 215 splx(s); 216 } 217 218 219 static void 220 adv_reset_ccb(ccb) 221 ADV_CCB *ccb; 222 { 223 224 ccb->flags = 0; 225 } 226 227 228 static int 229 adv_init_ccb(sc, ccb) 230 ASC_SOFTC *sc; 231 ADV_CCB *ccb; 232 { 233 int hashnum, error; 234 235 callout_init(&ccb->ccb_watchdog); 236 237 /* 238 * Create the DMA map for this CCB. 239 */ 240 error = bus_dmamap_create(sc->sc_dmat, 241 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 242 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 243 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 244 if (error) { 245 printf("%s: unable to create DMA map, error = %d\n", 246 sc->sc_dev.dv_xname, error); 247 return (error); 248 } 249 250 /* 251 * put in the phystokv hash table 252 * Never gets taken out. 253 */ 254 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 255 ADV_CCB_OFF(ccb); 256 hashnum = CCB_HASH(ccb->hashkey); 257 ccb->nexthash = sc->sc_ccbhash[hashnum]; 258 sc->sc_ccbhash[hashnum] = ccb; 259 260 adv_reset_ccb(ccb); 261 return (0); 262 } 263 264 265 /* 266 * Get a free ccb 267 * 268 * If there are none, see if we can allocate a new one 269 */ 270 static ADV_CCB * 271 adv_get_ccb(sc) 272 ASC_SOFTC *sc; 273 { 274 ADV_CCB *ccb = 0; 275 int s; 276 277 s = splbio(); 278 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 279 if (ccb != NULL) { 280 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 281 ccb->flags |= CCB_ALLOC; 282 } 283 splx(s); 284 return (ccb); 285 } 286 287 288 /* 289 * Given a physical address, find the ccb that it corresponds to. 290 */ 291 ADV_CCB * 292 adv_ccb_phys_kv(sc, ccb_phys) 293 ASC_SOFTC *sc; 294 u_long ccb_phys; 295 { 296 int hashnum = CCB_HASH(ccb_phys); 297 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 298 299 while (ccb) { 300 if (ccb->hashkey == ccb_phys) 301 break; 302 ccb = ccb->nexthash; 303 } 304 return (ccb); 305 } 306 307 308 /* 309 * Queue a CCB to be sent to the controller, and send it if possible. 310 */ 311 static void 312 adv_queue_ccb(sc, ccb) 313 ASC_SOFTC *sc; 314 ADV_CCB *ccb; 315 { 316 317 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 318 319 adv_start_ccbs(sc); 320 } 321 322 323 static void 324 adv_start_ccbs(sc) 325 ASC_SOFTC *sc; 326 { 327 ADV_CCB *ccb; 328 329 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 330 if (ccb->flags & CCB_WATCHDOG) 331 callout_stop(&ccb->ccb_watchdog); 332 333 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 334 ccb->flags |= CCB_WATCHDOG; 335 callout_reset(&ccb->ccb_watchdog, 336 (ADV_WATCH_TIMEOUT * hz) / 1000, 337 adv_watchdog, ccb); 338 break; 339 } 340 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 341 342 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 343 callout_reset(&ccb->xs->xs_callout, 344 mstohz(ccb->timeout), adv_timeout, ccb); 345 } 346 } 347 348 349 /******************************************************************************/ 350 /* SCSI layer interfacing routines */ 351 /******************************************************************************/ 352 353 354 int 355 adv_init(sc) 356 ASC_SOFTC *sc; 357 { 358 int warn; 359 360 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 361 aprint_error("adv_init: failed to find signature\n"); 362 return (1); 363 } 364 365 /* 366 * Read the board configuration 367 */ 368 AscInitASC_SOFTC(sc); 369 warn = AscInitFromEEP(sc); 370 if (warn) { 371 aprint_error("%s -get: ", sc->sc_dev.dv_xname); 372 switch (warn) { 373 case -1: 374 aprint_normal("Chip is not halted\n"); 375 break; 376 377 case -2: 378 aprint_normal("Couldn't get MicroCode Start" 379 " address\n"); 380 break; 381 382 case ASC_WARN_IO_PORT_ROTATE: 383 aprint_normal("I/O port address modified\n"); 384 break; 385 386 case ASC_WARN_AUTO_CONFIG: 387 aprint_normal("I/O port increment switch enabled\n"); 388 break; 389 390 case ASC_WARN_EEPROM_CHKSUM: 391 aprint_normal("EEPROM checksum error\n"); 392 break; 393 394 case ASC_WARN_IRQ_MODIFIED: 395 aprint_normal("IRQ modified\n"); 396 break; 397 398 case ASC_WARN_CMD_QNG_CONFLICT: 399 aprint_normal("tag queuing enabled w/o disconnects\n"); 400 break; 401 402 default: 403 aprint_normal("unknown warning %d\n", warn); 404 } 405 } 406 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 407 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 408 409 /* 410 * Modify the board configuration 411 */ 412 warn = AscInitFromASC_SOFTC(sc); 413 if (warn) { 414 aprint_error("%s -set: ", sc->sc_dev.dv_xname); 415 switch (warn) { 416 case ASC_WARN_CMD_QNG_CONFLICT: 417 aprint_normal("tag queuing enabled w/o disconnects\n"); 418 break; 419 420 case ASC_WARN_AUTO_CONFIG: 421 aprint_normal("I/O port increment switch enabled\n"); 422 break; 423 424 default: 425 aprint_normal("unknown warning %d\n", warn); 426 } 427 } 428 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 429 430 return (0); 431 } 432 433 434 void 435 adv_attach(sc) 436 ASC_SOFTC *sc; 437 { 438 struct scsipi_adapter *adapt = &sc->sc_adapter; 439 struct scsipi_channel *chan = &sc->sc_channel; 440 int i, error; 441 442 /* 443 * Initialize board RISC chip and enable interrupts. 444 */ 445 switch (AscInitDriver(sc)) { 446 case 0: 447 /* AllOK */ 448 break; 449 450 case 1: 451 panic("%s: bad signature", sc->sc_dev.dv_xname); 452 break; 453 454 case 2: 455 panic("%s: unable to load MicroCode", 456 sc->sc_dev.dv_xname); 457 break; 458 459 case 3: 460 panic("%s: unable to initialize MicroCode", 461 sc->sc_dev.dv_xname); 462 break; 463 464 default: 465 panic("%s: unable to initialize board RISC chip", 466 sc->sc_dev.dv_xname); 467 } 468 469 /* 470 * Fill in the scsipi_adapter. 471 */ 472 memset(adapt, 0, sizeof(*adapt)); 473 adapt->adapt_dev = &sc->sc_dev; 474 adapt->adapt_nchannels = 1; 475 /* adapt_openings initialized below */ 476 /* adapt_max_periph initialized below */ 477 adapt->adapt_request = adv_scsipi_request; 478 adapt->adapt_minphys = advminphys; 479 480 /* 481 * Fill in the scsipi_channel. 482 */ 483 memset(chan, 0, sizeof(*chan)); 484 chan->chan_adapter = adapt; 485 chan->chan_bustype = &scsi_bustype; 486 chan->chan_channel = 0; 487 chan->chan_ntargets = 8; 488 chan->chan_nluns = 8; 489 chan->chan_id = sc->chip_scsi_id; 490 491 TAILQ_INIT(&sc->sc_free_ccb); 492 TAILQ_INIT(&sc->sc_waiting_ccb); 493 494 /* 495 * Allocate the Control Blocks and the overrun buffer. 496 */ 497 error = adv_alloc_control_data(sc); 498 if (error) 499 return; /* (error) */ 500 501 /* 502 * Create and initialize the Control Blocks. 503 */ 504 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 505 if (i == 0) { 506 aprint_error("%s: unable to create control blocks\n", 507 sc->sc_dev.dv_xname); 508 return; /* (ENOMEM) */ ; 509 } else if (i != ADV_MAX_CCB) { 510 aprint_error( 511 "%s: WARNING: only %d of %d control blocks created\n", 512 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 513 } 514 515 adapt->adapt_openings = i; 516 adapt->adapt_max_periph = adapt->adapt_openings; 517 518 sc->sc_child = config_found(&sc->sc_dev, chan, scsiprint); 519 } 520 521 int 522 adv_detach(sc, flags) 523 ASC_SOFTC *sc; 524 int flags; 525 { 526 int rv = 0; 527 528 if (sc->sc_child != NULL) 529 rv = config_detach(sc->sc_child, flags); 530 531 adv_free_control_data(sc); 532 533 return (rv); 534 } 535 536 static void 537 advminphys(bp) 538 struct buf *bp; 539 { 540 541 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 542 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 543 minphys(bp); 544 } 545 546 547 /* 548 * start a scsi operation given the command and the data address. Also needs 549 * the unit, target and lu. 550 */ 551 552 static void 553 adv_scsipi_request(chan, req, arg) 554 struct scsipi_channel *chan; 555 scsipi_adapter_req_t req; 556 void *arg; 557 { 558 struct scsipi_xfer *xs; 559 struct scsipi_periph *periph; 560 ASC_SOFTC *sc = (void *)chan->chan_adapter->adapt_dev; 561 bus_dma_tag_t dmat = sc->sc_dmat; 562 ADV_CCB *ccb; 563 int s, flags, error, nsegs; 564 565 switch (req) { 566 case ADAPTER_REQ_RUN_XFER: 567 xs = arg; 568 periph = xs->xs_periph; 569 flags = xs->xs_control; 570 571 /* 572 * Get a CCB to use. 573 */ 574 ccb = adv_get_ccb(sc); 575 #ifdef DIAGNOSTIC 576 /* 577 * This should never happen as we track the resources 578 * in the mid-layer. 579 */ 580 if (ccb == NULL) { 581 scsipi_printaddr(periph); 582 printf("unable to allocate ccb\n"); 583 panic("adv_scsipi_request"); 584 } 585 #endif 586 587 ccb->xs = xs; 588 ccb->timeout = xs->timeout; 589 590 /* 591 * Build up the request 592 */ 593 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 594 595 ccb->scsiq.q2.ccb_ptr = 596 sc->sc_dmamap_control->dm_segs[0].ds_addr + 597 ADV_CCB_OFF(ccb); 598 599 ccb->scsiq.cdbptr = &xs->cmd->opcode; 600 ccb->scsiq.q2.cdb_len = xs->cmdlen; 601 ccb->scsiq.q1.target_id = 602 ASC_TID_TO_TARGET_ID(periph->periph_target); 603 ccb->scsiq.q1.target_lun = periph->periph_lun; 604 ccb->scsiq.q2.target_ix = 605 ASC_TIDLUN_TO_IX(periph->periph_target, 606 periph->periph_lun); 607 ccb->scsiq.q1.sense_addr = 608 sc->sc_dmamap_control->dm_segs[0].ds_addr + 609 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 610 ccb->scsiq.q1.sense_len = sizeof(struct scsi_sense_data); 611 612 /* 613 * If there are any outstanding requests for the current 614 * target, then every 255th request send an ORDERED request. 615 * This heuristic tries to retain the benefit of request 616 * sorting while preventing request starvation. 255 is the 617 * max number of tags or pending commands a device may have 618 * outstanding. 619 */ 620 sc->reqcnt[periph->periph_target]++; 621 if (((sc->reqcnt[periph->periph_target] > 0) && 622 (sc->reqcnt[periph->periph_target] % 255) == 0) || 623 xs->bp == NULL || (xs->bp->b_flags & B_ASYNC) == 0) { 624 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 625 } else { 626 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 627 } 628 629 if (xs->datalen) { 630 /* 631 * Map the DMA transfer. 632 */ 633 #ifdef TFS 634 if (flags & SCSI_DATA_UIO) { 635 error = bus_dmamap_load_uio(dmat, 636 ccb->dmamap_xfer, (struct uio *) xs->data, 637 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 638 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 639 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 640 BUS_DMA_WRITE)); 641 } else 642 #endif /* TFS */ 643 { 644 error = bus_dmamap_load(dmat, ccb->dmamap_xfer, 645 xs->data, xs->datalen, NULL, 646 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 647 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 648 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 649 BUS_DMA_WRITE)); 650 } 651 652 switch (error) { 653 case 0: 654 break; 655 656 657 case ENOMEM: 658 case EAGAIN: 659 xs->error = XS_RESOURCE_SHORTAGE; 660 goto out_bad; 661 662 default: 663 xs->error = XS_DRIVER_STUFFUP; 664 if (error == EFBIG) { 665 printf("%s: adv_scsi_cmd, more than %d" 666 " DMA segments\n", 667 sc->sc_dev.dv_xname, 668 ASC_MAX_SG_LIST); 669 } else { 670 printf("%s: adv_scsi_cmd, error %d" 671 " loading DMA map\n", 672 sc->sc_dev.dv_xname, error); 673 } 674 675 out_bad: 676 adv_free_ccb(sc, ccb); 677 scsipi_done(xs); 678 return; 679 } 680 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 681 ccb->dmamap_xfer->dm_mapsize, 682 (flags & XS_CTL_DATA_IN) ? 683 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 684 685 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 686 687 for (nsegs = 0; 688 nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 689 ccb->sghead.sg_list[nsegs].addr = 690 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 691 ccb->sghead.sg_list[nsegs].bytes = 692 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 693 } 694 695 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 696 ccb->dmamap_xfer->dm_nsegs; 697 698 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 699 ccb->scsiq.sg_head = &ccb->sghead; 700 ccb->scsiq.q1.data_addr = 0; 701 ccb->scsiq.q1.data_cnt = 0; 702 } else { 703 /* 704 * No data xfer, use non S/G values. 705 */ 706 ccb->scsiq.q1.data_addr = 0; 707 ccb->scsiq.q1.data_cnt = 0; 708 } 709 710 #ifdef ASC_DEBUG 711 printf("id = 0, lun = 0, cmd = 0, ccb = 0x0 \n", 712 periph->periph_target, 713 periph->periph_lun, xs->cmd->opcode, 714 (unsigned long)ccb); 715 #endif 716 s = splbio(); 717 adv_queue_ccb(sc, ccb); 718 splx(s); 719 720 if ((flags & XS_CTL_POLL) == 0) 721 return; 722 723 /* Not allowed to use interrupts, poll for completion. */ 724 if (adv_poll(sc, xs, ccb->timeout)) { 725 adv_timeout(ccb); 726 if (adv_poll(sc, xs, ccb->timeout)) 727 adv_timeout(ccb); 728 } 729 return; 730 731 case ADAPTER_REQ_GROW_RESOURCES: 732 /* XXX Not supported. */ 733 return; 734 735 case ADAPTER_REQ_SET_XFER_MODE: 736 { 737 /* 738 * We can't really set the mode, but we know how to 739 * query what the firmware negotiated. 740 */ 741 struct scsipi_xfer_mode *xm = arg; 742 u_int8_t sdtr_data; 743 ASC_SCSI_BIT_ID_TYPE tid_bit; 744 745 tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target); 746 747 xm->xm_mode = 0; 748 xm->xm_period = 0; 749 xm->xm_offset = 0; 750 751 if (sc->init_sdtr & tid_bit) { 752 xm->xm_mode |= PERIPH_CAP_SYNC; 753 sdtr_data = sc->sdtr_data[xm->xm_target]; 754 xm->xm_period = 755 sc->sdtr_period_tbl[(sdtr_data >> 4) & 756 (sc->max_sdtr_index - 1)]; 757 xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET; 758 } 759 760 if (sc->use_tagged_qng & tid_bit) 761 xm->xm_mode |= PERIPH_CAP_TQING; 762 763 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); 764 return; 765 } 766 } 767 } 768 769 int 770 adv_intr(arg) 771 void *arg; 772 { 773 ASC_SOFTC *sc = arg; 774 775 #ifdef ASC_DEBUG 776 int int_pend = FALSE; 777 778 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 779 { 780 int_pend = TRUE; 781 printf("ISR - "); 782 } 783 #endif 784 AscISR(sc); 785 #ifdef ASC_DEBUG 786 if(int_pend) 787 printf("\n"); 788 #endif 789 790 return (1); 791 } 792 793 794 /* 795 * Poll a particular unit, looking for a particular xs 796 */ 797 static int 798 adv_poll(sc, xs, count) 799 ASC_SOFTC *sc; 800 struct scsipi_xfer *xs; 801 int count; 802 { 803 804 /* timeouts are in msec, so we loop in 1000 usec cycles */ 805 while (count) { 806 adv_intr(sc); 807 if (xs->xs_status & XS_STS_DONE) 808 return (0); 809 delay(1000); /* only happens in boot so ok */ 810 count--; 811 } 812 return (1); 813 } 814 815 816 static void 817 adv_timeout(arg) 818 void *arg; 819 { 820 ADV_CCB *ccb = arg; 821 struct scsipi_xfer *xs = ccb->xs; 822 struct scsipi_periph *periph = xs->xs_periph; 823 ASC_SOFTC *sc = 824 (void *)periph->periph_channel->chan_adapter->adapt_dev; 825 int s; 826 827 scsipi_printaddr(periph); 828 printf("timed out"); 829 830 s = splbio(); 831 832 /* 833 * If it has been through before, then a previous abort has failed, 834 * don't try abort again, reset the bus instead. 835 */ 836 if (ccb->flags & CCB_ABORT) { 837 /* abort timed out */ 838 printf(" AGAIN. Resetting Bus\n"); 839 /* Lets try resetting the bus! */ 840 if (AscResetBus(sc) == ASC_ERROR) { 841 ccb->timeout = sc->scsi_reset_wait; 842 adv_queue_ccb(sc, ccb); 843 } 844 } else { 845 /* abort the operation that has timed out */ 846 printf("\n"); 847 AscAbortCCB(sc, ccb); 848 ccb->xs->error = XS_TIMEOUT; 849 ccb->timeout = ADV_ABORT_TIMEOUT; 850 ccb->flags |= CCB_ABORT; 851 adv_queue_ccb(sc, ccb); 852 } 853 854 splx(s); 855 } 856 857 858 static void 859 adv_watchdog(arg) 860 void *arg; 861 { 862 ADV_CCB *ccb = arg; 863 struct scsipi_xfer *xs = ccb->xs; 864 struct scsipi_periph *periph = xs->xs_periph; 865 ASC_SOFTC *sc = 866 (void *)periph->periph_channel->chan_adapter->adapt_dev; 867 int s; 868 869 s = splbio(); 870 871 ccb->flags &= ~CCB_WATCHDOG; 872 adv_start_ccbs(sc); 873 874 splx(s); 875 } 876 877 878 /******************************************************************************/ 879 /* NARROW boards Interrupt callbacks */ 880 /******************************************************************************/ 881 882 883 /* 884 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 885 * 886 * Interrupt callback function for the Narrow SCSI Asc Library. 887 */ 888 static void 889 adv_narrow_isr_callback(sc, qdonep) 890 ASC_SOFTC *sc; 891 ASC_QDONE_INFO *qdonep; 892 { 893 bus_dma_tag_t dmat = sc->sc_dmat; 894 ADV_CCB *ccb; 895 struct scsipi_xfer *xs; 896 struct scsi_sense_data *s1, *s2; 897 898 899 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 900 xs = ccb->xs; 901 902 #ifdef ASC_DEBUG 903 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 904 (unsigned long)ccb, 905 xs->xs_periph->periph_target, 906 xs->xs_periph->periph_lun, xs->cmd->opcode); 907 #endif 908 callout_stop(&ccb->xs->xs_callout); 909 910 /* 911 * If we were a data transfer, unload the map that described 912 * the data buffer. 913 */ 914 if (xs->datalen) { 915 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 916 ccb->dmamap_xfer->dm_mapsize, 917 (xs->xs_control & XS_CTL_DATA_IN) ? 918 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 919 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 920 } 921 if ((ccb->flags & CCB_ALLOC) == 0) { 922 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 923 Debugger(); 924 return; 925 } 926 /* 927 * 'qdonep' contains the command's ending status. 928 */ 929 #ifdef ASC_DEBUG 930 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 931 #endif 932 switch (qdonep->d3.done_stat) { 933 case ASC_QD_NO_ERROR: 934 switch (qdonep->d3.host_stat) { 935 case ASC_QHSTA_NO_ERROR: 936 xs->error = XS_NOERROR; 937 xs->resid = 0; 938 break; 939 940 default: 941 /* QHSTA error occurred */ 942 xs->error = XS_DRIVER_STUFFUP; 943 break; 944 } 945 946 /* 947 * If an INQUIRY command completed successfully, then call 948 * the AscInquiryHandling() function to patch bugged boards. 949 */ 950 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 951 (xs->xs_periph->periph_lun == 0) && 952 (xs->datalen - qdonep->remain_bytes) >= 8) { 953 AscInquiryHandling(sc, 954 xs->xs_periph->periph_target & 0x7, 955 (ASC_SCSI_INQUIRY *) xs->data); 956 } 957 break; 958 959 case ASC_QD_WITH_ERROR: 960 switch (qdonep->d3.host_stat) { 961 case ASC_QHSTA_NO_ERROR: 962 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 963 s1 = &ccb->scsi_sense; 964 s2 = &xs->sense.scsi_sense; 965 *s2 = *s1; 966 xs->error = XS_SENSE; 967 } else { 968 xs->error = XS_DRIVER_STUFFUP; 969 } 970 break; 971 972 case ASC_QHSTA_M_SEL_TIMEOUT: 973 xs->error = XS_SELTIMEOUT; 974 break; 975 976 default: 977 /* QHSTA error occurred */ 978 xs->error = XS_DRIVER_STUFFUP; 979 break; 980 } 981 break; 982 983 case ASC_QD_ABORTED_BY_HOST: 984 default: 985 xs->error = XS_DRIVER_STUFFUP; 986 break; 987 } 988 989 990 adv_free_ccb(sc, ccb); 991 scsipi_done(xs); 992 } 993