adv.c revision 1.26
1 /* $NetBSD: adv.c,v 1.26 2001/06/09 18:08:20 briggs 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/types.h> 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/callout.h> 44 #include <sys/kernel.h> 45 #include <sys/errno.h> 46 #include <sys/ioctl.h> 47 #include <sys/device.h> 48 #include <sys/malloc.h> 49 #include <sys/buf.h> 50 #include <sys/proc.h> 51 #include <sys/user.h> 52 53 #include <machine/bus.h> 54 #include <machine/intr.h> 55 56 #include <uvm/uvm_extern.h> 57 58 #include <dev/scsipi/scsi_all.h> 59 #include <dev/scsipi/scsipi_all.h> 60 #include <dev/scsipi/scsiconf.h> 61 62 #include <dev/ic/advlib.h> 63 #include <dev/ic/adv.h> 64 65 #ifndef DDB 66 #define Debugger() panic("should call debugger here (adv.c)") 67 #endif /* ! DDB */ 68 69 70 /* #define ASC_DEBUG */ 71 72 /******************************************************************************/ 73 74 75 static int adv_alloc_control_data __P((ASC_SOFTC *)); 76 static void adv_free_control_data __P((ASC_SOFTC *)); 77 static int adv_create_ccbs __P((ASC_SOFTC *, ADV_CCB *, int)); 78 static void adv_free_ccb __P((ASC_SOFTC *, ADV_CCB *)); 79 static void adv_reset_ccb __P((ADV_CCB *)); 80 static int adv_init_ccb __P((ASC_SOFTC *, ADV_CCB *)); 81 static ADV_CCB *adv_get_ccb __P((ASC_SOFTC *)); 82 static void adv_queue_ccb __P((ASC_SOFTC *, ADV_CCB *)); 83 static void adv_start_ccbs __P((ASC_SOFTC *)); 84 85 86 static void adv_scsipi_request __P((struct scsipi_channel *, 87 scsipi_adapter_req_t, void *)); 88 static void advminphys __P((struct buf *)); 89 static void adv_narrow_isr_callback __P((ASC_SOFTC *, ASC_QDONE_INFO *)); 90 91 static int adv_poll __P((ASC_SOFTC *, struct scsipi_xfer *, int)); 92 static void adv_timeout __P((void *)); 93 static void adv_watchdog __P((void *)); 94 95 96 /******************************************************************************/ 97 98 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 99 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 100 101 /******************************************************************************/ 102 /* Control Blocks routines */ 103 /******************************************************************************/ 104 105 106 static int 107 adv_alloc_control_data(sc) 108 ASC_SOFTC *sc; 109 { 110 int error; 111 112 /* 113 * Allocate the control blocks. 114 */ 115 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 116 PAGE_SIZE, 0, &sc->sc_control_seg, 1, 117 &sc->sc_control_nsegs, BUS_DMA_NOWAIT)) != 0) { 118 printf("%s: unable to allocate control structures," 119 " error = %d\n", sc->sc_dev.dv_xname, error); 120 return (error); 121 } 122 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_control_seg, 123 sc->sc_control_nsegs, sizeof(struct adv_control), 124 (caddr_t *) & sc->sc_control, 125 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 126 printf("%s: unable to map control structures, error = %d\n", 127 sc->sc_dev.dv_xname, error); 128 return (error); 129 } 130 /* 131 * Create and load the DMA map used for the control blocks. 132 */ 133 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 134 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 135 &sc->sc_dmamap_control)) != 0) { 136 printf("%s: unable to create control DMA map, error = %d\n", 137 sc->sc_dev.dv_xname, error); 138 return (error); 139 } 140 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 141 sc->sc_control, sizeof(struct adv_control), NULL, 142 BUS_DMA_NOWAIT)) != 0) { 143 printf("%s: unable to load control DMA map, error = %d\n", 144 sc->sc_dev.dv_xname, error); 145 return (error); 146 } 147 148 /* 149 * Initialize the overrun_buf address. 150 */ 151 sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + 152 offsetof(struct adv_control, overrun_buf); 153 154 return (0); 155 } 156 157 static void 158 adv_free_control_data(sc) 159 ASC_SOFTC *sc; 160 { 161 162 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control); 163 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control); 164 sc->sc_dmamap_control = NULL; 165 166 bus_dmamem_unmap(sc->sc_dmat, (caddr_t) sc->sc_control, 167 sizeof(struct adv_control)); 168 bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg, 169 sc->sc_control_nsegs); 170 } 171 172 /* 173 * Create a set of ccbs and add them to the free list. Called once 174 * by adv_init(). We return the number of CCBs successfully created. 175 */ 176 static int 177 adv_create_ccbs(sc, ccbstore, count) 178 ASC_SOFTC *sc; 179 ADV_CCB *ccbstore; 180 int count; 181 { 182 ADV_CCB *ccb; 183 int i, error; 184 185 bzero(ccbstore, sizeof(ADV_CCB) * count); 186 for (i = 0; i < count; i++) { 187 ccb = &ccbstore[i]; 188 if ((error = adv_init_ccb(sc, ccb)) != 0) { 189 printf("%s: unable to initialize ccb, error = %d\n", 190 sc->sc_dev.dv_xname, error); 191 return (i); 192 } 193 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 194 } 195 196 return (i); 197 } 198 199 200 /* 201 * A ccb is put onto the free list. 202 */ 203 static void 204 adv_free_ccb(sc, ccb) 205 ASC_SOFTC *sc; 206 ADV_CCB *ccb; 207 { 208 int s; 209 210 s = splbio(); 211 adv_reset_ccb(ccb); 212 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 213 splx(s); 214 } 215 216 217 static void 218 adv_reset_ccb(ccb) 219 ADV_CCB *ccb; 220 { 221 222 ccb->flags = 0; 223 } 224 225 226 static int 227 adv_init_ccb(sc, ccb) 228 ASC_SOFTC *sc; 229 ADV_CCB *ccb; 230 { 231 int hashnum, error; 232 233 callout_init(&ccb->ccb_watchdog); 234 235 /* 236 * Create the DMA map for this CCB. 237 */ 238 error = bus_dmamap_create(sc->sc_dmat, 239 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 240 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 241 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 242 if (error) { 243 printf("%s: unable to create DMA map, error = %d\n", 244 sc->sc_dev.dv_xname, error); 245 return (error); 246 } 247 248 /* 249 * put in the phystokv hash table 250 * Never gets taken out. 251 */ 252 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 253 ADV_CCB_OFF(ccb); 254 hashnum = CCB_HASH(ccb->hashkey); 255 ccb->nexthash = sc->sc_ccbhash[hashnum]; 256 sc->sc_ccbhash[hashnum] = ccb; 257 258 adv_reset_ccb(ccb); 259 return (0); 260 } 261 262 263 /* 264 * Get a free ccb 265 * 266 * If there are none, see if we can allocate a new one 267 */ 268 static ADV_CCB * 269 adv_get_ccb(sc) 270 ASC_SOFTC *sc; 271 { 272 ADV_CCB *ccb = 0; 273 int s; 274 275 s = splbio(); 276 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 277 if (ccb != NULL) { 278 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 279 ccb->flags |= CCB_ALLOC; 280 } 281 splx(s); 282 return (ccb); 283 } 284 285 286 /* 287 * Given a physical address, find the ccb that it corresponds to. 288 */ 289 ADV_CCB * 290 adv_ccb_phys_kv(sc, ccb_phys) 291 ASC_SOFTC *sc; 292 u_long ccb_phys; 293 { 294 int hashnum = CCB_HASH(ccb_phys); 295 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 296 297 while (ccb) { 298 if (ccb->hashkey == ccb_phys) 299 break; 300 ccb = ccb->nexthash; 301 } 302 return (ccb); 303 } 304 305 306 /* 307 * Queue a CCB to be sent to the controller, and send it if possible. 308 */ 309 static void 310 adv_queue_ccb(sc, ccb) 311 ASC_SOFTC *sc; 312 ADV_CCB *ccb; 313 { 314 315 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 316 317 adv_start_ccbs(sc); 318 } 319 320 321 static void 322 adv_start_ccbs(sc) 323 ASC_SOFTC *sc; 324 { 325 ADV_CCB *ccb; 326 327 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 328 if (ccb->flags & CCB_WATCHDOG) 329 callout_stop(&ccb->ccb_watchdog); 330 331 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 332 ccb->flags |= CCB_WATCHDOG; 333 callout_reset(&ccb->ccb_watchdog, 334 (ADV_WATCH_TIMEOUT * hz) / 1000, 335 adv_watchdog, ccb); 336 break; 337 } 338 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 339 340 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 341 callout_reset(&ccb->xs->xs_callout, 342 ((u_int64_t)ccb->timeout * (u_int64_t)hz) / 1000, 343 adv_timeout, ccb); 344 } 345 } 346 347 348 /******************************************************************************/ 349 /* SCSI layer interfacing routines */ 350 /******************************************************************************/ 351 352 353 int 354 adv_init(sc) 355 ASC_SOFTC *sc; 356 { 357 int warn; 358 359 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 360 printf("adv_init: failed to find signature\n"); 361 return (1); 362 } 363 364 /* 365 * Read the board configuration 366 */ 367 AscInitASC_SOFTC(sc); 368 warn = AscInitFromEEP(sc); 369 if (warn) { 370 printf("%s -get: ", sc->sc_dev.dv_xname); 371 switch (warn) { 372 case -1: 373 printf("Chip is not halted\n"); 374 break; 375 376 case -2: 377 printf("Couldn't get MicroCode Start" 378 " address\n"); 379 break; 380 381 case ASC_WARN_IO_PORT_ROTATE: 382 printf("I/O port address modified\n"); 383 break; 384 385 case ASC_WARN_AUTO_CONFIG: 386 printf("I/O port increment switch enabled\n"); 387 break; 388 389 case ASC_WARN_EEPROM_CHKSUM: 390 printf("EEPROM checksum error\n"); 391 break; 392 393 case ASC_WARN_IRQ_MODIFIED: 394 printf("IRQ modified\n"); 395 break; 396 397 case ASC_WARN_CMD_QNG_CONFLICT: 398 printf("tag queuing enabled w/o disconnects\n"); 399 break; 400 401 default: 402 printf("unknown warning %d\n", warn); 403 } 404 } 405 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 406 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 407 408 /* 409 * Modify the board configuration 410 */ 411 warn = AscInitFromASC_SOFTC(sc); 412 if (warn) { 413 printf("%s -set: ", sc->sc_dev.dv_xname); 414 switch (warn) { 415 case ASC_WARN_CMD_QNG_CONFLICT: 416 printf("tag queuing enabled w/o disconnects\n"); 417 break; 418 419 case ASC_WARN_AUTO_CONFIG: 420 printf("I/O port increment switch enabled\n"); 421 break; 422 423 default: 424 printf("unknown warning %d\n", warn); 425 } 426 } 427 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 428 429 return (0); 430 } 431 432 433 void 434 adv_attach(sc) 435 ASC_SOFTC *sc; 436 { 437 struct scsipi_adapter *adapt = &sc->sc_adapter; 438 struct scsipi_channel *chan = &sc->sc_channel; 439 int i, error; 440 441 /* 442 * Initialize board RISC chip and enable interrupts. 443 */ 444 switch (AscInitDriver(sc)) { 445 case 0: 446 /* AllOK */ 447 break; 448 449 case 1: 450 panic("%s: bad signature", sc->sc_dev.dv_xname); 451 break; 452 453 case 2: 454 panic("%s: unable to load MicroCode", 455 sc->sc_dev.dv_xname); 456 break; 457 458 case 3: 459 panic("%s: unable to initialize MicroCode", 460 sc->sc_dev.dv_xname); 461 break; 462 463 default: 464 panic("%s: unable to initialize board RISC chip", 465 sc->sc_dev.dv_xname); 466 } 467 468 /* 469 * Fill in the scsipi_adapter. 470 */ 471 memset(adapt, 0, sizeof(*adapt)); 472 adapt->adapt_dev = &sc->sc_dev; 473 adapt->adapt_nchannels = 1; 474 /* adapt_openings initialized below */ 475 /* adapt_max_periph initialized below */ 476 adapt->adapt_request = adv_scsipi_request; 477 adapt->adapt_minphys = advminphys; 478 479 /* 480 * Fill in the scsipi_channel. 481 */ 482 memset(chan, 0, sizeof(*chan)); 483 chan->chan_adapter = adapt; 484 chan->chan_bustype = &scsi_bustype; 485 chan->chan_channel = 0; 486 chan->chan_ntargets = 8; 487 chan->chan_nluns = 8; 488 chan->chan_id = sc->chip_scsi_id; 489 490 TAILQ_INIT(&sc->sc_free_ccb); 491 TAILQ_INIT(&sc->sc_waiting_ccb); 492 493 /* 494 * Allocate the Control Blocks and the overrun buffer. 495 */ 496 error = adv_alloc_control_data(sc); 497 if (error) 498 return; /* (error) */ 499 500 /* 501 * Create and initialize the Control Blocks. 502 */ 503 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 504 if (i == 0) { 505 printf("%s: unable to create control blocks\n", 506 sc->sc_dev.dv_xname); 507 return; /* (ENOMEM) */ ; 508 } else if (i != ADV_MAX_CCB) { 509 printf("%s: WARNING: only %d of %d control blocks created\n", 510 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 511 } 512 513 adapt->adapt_openings = i; 514 adapt->adapt_max_periph = adapt->adapt_openings; 515 516 sc->sc_child = config_found(&sc->sc_dev, chan, scsiprint); 517 } 518 519 int 520 adv_detach(sc, flags) 521 ASC_SOFTC *sc; 522 int flags; 523 { 524 int rv = 0; 525 526 if (sc->sc_child != NULL) 527 rv = config_detach(sc->sc_child, flags); 528 529 adv_free_control_data(sc); 530 531 return (rv); 532 } 533 534 static void 535 advminphys(bp) 536 struct buf *bp; 537 { 538 539 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 540 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 541 minphys(bp); 542 } 543 544 545 /* 546 * start a scsi operation given the command and the data address. Also needs 547 * the unit, target and lu. 548 */ 549 550 static void 551 adv_scsipi_request(chan, req, arg) 552 struct scsipi_channel *chan; 553 scsipi_adapter_req_t req; 554 void *arg; 555 { 556 struct scsipi_xfer *xs; 557 struct scsipi_periph *periph; 558 ASC_SOFTC *sc = (void *)chan->chan_adapter->adapt_dev; 559 bus_dma_tag_t dmat = sc->sc_dmat; 560 ADV_CCB *ccb; 561 int s, flags, error, nsegs; 562 563 switch (req) { 564 case ADAPTER_REQ_RUN_XFER: 565 xs = arg; 566 periph = xs->xs_periph; 567 flags = xs->xs_control; 568 569 /* 570 * Get a CCB to use. 571 */ 572 ccb = adv_get_ccb(sc); 573 #ifdef DIAGNOSTIC 574 /* 575 * This should never happen as we track the resources 576 * in the mid-layer. 577 */ 578 if (ccb == NULL) { 579 scsipi_printaddr(periph); 580 printf("unable to allocate ccb\n"); 581 panic("adv_scsipi_request"); 582 } 583 #endif 584 585 ccb->xs = xs; 586 ccb->timeout = xs->timeout; 587 588 /* 589 * Build up the request 590 */ 591 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 592 593 ccb->scsiq.q2.ccb_ptr = 594 sc->sc_dmamap_control->dm_segs[0].ds_addr + 595 ADV_CCB_OFF(ccb); 596 597 ccb->scsiq.cdbptr = &xs->cmd->opcode; 598 ccb->scsiq.q2.cdb_len = xs->cmdlen; 599 ccb->scsiq.q1.target_id = 600 ASC_TID_TO_TARGET_ID(periph->periph_target); 601 ccb->scsiq.q1.target_lun = periph->periph_lun; 602 ccb->scsiq.q2.target_ix = 603 ASC_TIDLUN_TO_IX(periph->periph_target, 604 periph->periph_lun); 605 ccb->scsiq.q1.sense_addr = 606 sc->sc_dmamap_control->dm_segs[0].ds_addr + 607 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 608 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 609 610 /* 611 * If there are any outstanding requests for the current 612 * target, then every 255th request send an ORDERED request. 613 * This heuristic tries to retain the benefit of request 614 * sorting while preventing request starvation. 255 is the 615 * max number of tags or pending commands a device may have 616 * outstanding. 617 */ 618 sc->reqcnt[periph->periph_target]++; 619 if (((sc->reqcnt[periph->periph_target] > 0) && 620 (sc->reqcnt[periph->periph_target] % 255) == 0) || 621 xs->bp == NULL || (xs->bp->b_flags & B_ASYNC) == 0) { 622 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 623 } else { 624 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 625 } 626 627 if (xs->datalen) { 628 /* 629 * Map the DMA transfer. 630 */ 631 #ifdef TFS 632 if (flags & SCSI_DATA_UIO) { 633 error = bus_dmamap_load_uio(dmat, 634 ccb->dmamap_xfer, (struct uio *) xs->data, 635 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 636 BUS_DMA_WAITOK) | BUS_DMA_STREAMING); 637 } else 638 #endif /* TFS */ 639 { 640 error = bus_dmamap_load(dmat, ccb->dmamap_xfer, 641 xs->data, xs->datalen, NULL, 642 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 643 BUS_DMA_WAITOK) | BUS_DMA_STREAMING); 644 } 645 646 switch (error) { 647 case 0: 648 break; 649 650 651 case ENOMEM: 652 case EAGAIN: 653 xs->error = XS_RESOURCE_SHORTAGE; 654 goto out_bad; 655 656 default: 657 xs->error = XS_DRIVER_STUFFUP; 658 if (error == EFBIG) { 659 printf("%s: adv_scsi_cmd, more than %d" 660 " dma segments\n", 661 sc->sc_dev.dv_xname, 662 ASC_MAX_SG_LIST); 663 } else { 664 printf("%s: adv_scsi_cmd, error %d" 665 " loading dma map\n", 666 sc->sc_dev.dv_xname, error); 667 } 668 669 out_bad: 670 adv_free_ccb(sc, ccb); 671 scsipi_done(xs); 672 return; 673 } 674 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 675 ccb->dmamap_xfer->dm_mapsize, 676 (flags & XS_CTL_DATA_IN) ? 677 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 678 679 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 680 681 for (nsegs = 0; 682 nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 683 ccb->sghead.sg_list[nsegs].addr = 684 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 685 ccb->sghead.sg_list[nsegs].bytes = 686 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 687 } 688 689 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 690 ccb->dmamap_xfer->dm_nsegs; 691 692 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 693 ccb->scsiq.sg_head = &ccb->sghead; 694 ccb->scsiq.q1.data_addr = 0; 695 ccb->scsiq.q1.data_cnt = 0; 696 } else { 697 /* 698 * No data xfer, use non S/G values. 699 */ 700 ccb->scsiq.q1.data_addr = 0; 701 ccb->scsiq.q1.data_cnt = 0; 702 } 703 704 #ifdef ASC_DEBUG 705 printf("id = 0, lun = 0, cmd = 0, ccb = 0x0 \n", 706 periph->periph_target, 707 periph->periph_lun, xs->cmd->opcode, 708 (unsigned long)ccb); 709 #endif 710 s = splbio(); 711 adv_queue_ccb(sc, ccb); 712 splx(s); 713 714 if ((flags & XS_CTL_POLL) == 0) 715 return; 716 717 /* Not allowed to use interrupts, poll for completion. */ 718 if (adv_poll(sc, xs, ccb->timeout)) { 719 adv_timeout(ccb); 720 if (adv_poll(sc, xs, ccb->timeout)) 721 adv_timeout(ccb); 722 } 723 return; 724 725 case ADAPTER_REQ_GROW_RESOURCES: 726 /* XXX Not supported. */ 727 return; 728 729 case ADAPTER_REQ_SET_XFER_MODE: 730 { 731 /* 732 * We can't really set the mode, but we know how to 733 * query what the firmware negotiated. 734 */ 735 struct scsipi_xfer_mode *xm = arg; 736 u_int8_t sdtr_data; 737 ASC_SCSI_BIT_ID_TYPE tid_bit; 738 739 tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target); 740 741 xm->xm_mode = 0; 742 xm->xm_period = 0; 743 xm->xm_offset = 0; 744 745 if (sc->init_sdtr & tid_bit) { 746 xm->xm_mode |= PERIPH_CAP_SYNC; 747 sdtr_data = sc->sdtr_data[xm->xm_target]; 748 xm->xm_period = 749 sc->sdtr_period_tbl[(sdtr_data >> 4) & 750 (sc->max_sdtr_index - 1)]; 751 xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET; 752 } 753 754 if (sc->use_tagged_qng & tid_bit) 755 xm->xm_mode |= PERIPH_CAP_TQING; 756 757 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); 758 return; 759 } 760 } 761 } 762 763 int 764 adv_intr(arg) 765 void *arg; 766 { 767 ASC_SOFTC *sc = arg; 768 769 #ifdef ASC_DEBUG 770 int int_pend = FALSE; 771 772 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 773 { 774 int_pend = TRUE; 775 printf("ISR - "); 776 } 777 #endif 778 AscISR(sc); 779 #ifdef ASC_DEBUG 780 if(int_pend) 781 printf("\n"); 782 #endif 783 784 return (1); 785 } 786 787 788 /* 789 * Poll a particular unit, looking for a particular xs 790 */ 791 static int 792 adv_poll(sc, xs, count) 793 ASC_SOFTC *sc; 794 struct scsipi_xfer *xs; 795 int count; 796 { 797 798 /* timeouts are in msec, so we loop in 1000 usec cycles */ 799 while (count) { 800 adv_intr(sc); 801 if (xs->xs_status & XS_STS_DONE) 802 return (0); 803 delay(1000); /* only happens in boot so ok */ 804 count--; 805 } 806 return (1); 807 } 808 809 810 static void 811 adv_timeout(arg) 812 void *arg; 813 { 814 ADV_CCB *ccb = arg; 815 struct scsipi_xfer *xs = ccb->xs; 816 struct scsipi_periph *periph = xs->xs_periph; 817 ASC_SOFTC *sc = 818 (void *)periph->periph_channel->chan_adapter->adapt_dev; 819 int s; 820 821 scsipi_printaddr(periph); 822 printf("timed out"); 823 824 s = splbio(); 825 826 /* 827 * If it has been through before, then a previous abort has failed, 828 * don't try abort again, reset the bus instead. 829 */ 830 if (ccb->flags & CCB_ABORT) { 831 /* abort timed out */ 832 printf(" AGAIN. Resetting Bus\n"); 833 /* Lets try resetting the bus! */ 834 if (AscResetBus(sc) == ASC_ERROR) { 835 ccb->timeout = sc->scsi_reset_wait; 836 adv_queue_ccb(sc, ccb); 837 } 838 } else { 839 /* abort the operation that has timed out */ 840 printf("\n"); 841 AscAbortCCB(sc, ccb); 842 ccb->xs->error = XS_TIMEOUT; 843 ccb->timeout = ADV_ABORT_TIMEOUT; 844 ccb->flags |= CCB_ABORT; 845 adv_queue_ccb(sc, ccb); 846 } 847 848 splx(s); 849 } 850 851 852 static void 853 adv_watchdog(arg) 854 void *arg; 855 { 856 ADV_CCB *ccb = arg; 857 struct scsipi_xfer *xs = ccb->xs; 858 struct scsipi_periph *periph = xs->xs_periph; 859 ASC_SOFTC *sc = 860 (void *)periph->periph_channel->chan_adapter->adapt_dev; 861 int s; 862 863 s = splbio(); 864 865 ccb->flags &= ~CCB_WATCHDOG; 866 adv_start_ccbs(sc); 867 868 splx(s); 869 } 870 871 872 /******************************************************************************/ 873 /* NARROW boards Interrupt callbacks */ 874 /******************************************************************************/ 875 876 877 /* 878 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 879 * 880 * Interrupt callback function for the Narrow SCSI Asc Library. 881 */ 882 static void 883 adv_narrow_isr_callback(sc, qdonep) 884 ASC_SOFTC *sc; 885 ASC_QDONE_INFO *qdonep; 886 { 887 bus_dma_tag_t dmat = sc->sc_dmat; 888 ADV_CCB *ccb; 889 struct scsipi_xfer *xs; 890 struct scsipi_sense_data *s1, *s2; 891 892 893 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 894 xs = ccb->xs; 895 896 #ifdef ASC_DEBUG 897 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 898 (unsigned long)ccb, 899 xs->xs_periph->periph_target, 900 xs->xs_periph->periph_lun, xs->cmd->opcode); 901 #endif 902 callout_stop(&ccb->xs->xs_callout); 903 904 /* 905 * If we were a data transfer, unload the map that described 906 * the data buffer. 907 */ 908 if (xs->datalen) { 909 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 910 ccb->dmamap_xfer->dm_mapsize, 911 (xs->xs_control & XS_CTL_DATA_IN) ? 912 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 913 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 914 } 915 if ((ccb->flags & CCB_ALLOC) == 0) { 916 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 917 Debugger(); 918 return; 919 } 920 /* 921 * 'qdonep' contains the command's ending status. 922 */ 923 #ifdef ASC_DEBUG 924 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 925 #endif 926 switch (qdonep->d3.done_stat) { 927 case ASC_QD_NO_ERROR: 928 switch (qdonep->d3.host_stat) { 929 case ASC_QHSTA_NO_ERROR: 930 xs->error = XS_NOERROR; 931 xs->resid = 0; 932 break; 933 934 default: 935 /* QHSTA error occurred */ 936 xs->error = XS_DRIVER_STUFFUP; 937 break; 938 } 939 940 /* 941 * If an INQUIRY command completed successfully, then call 942 * the AscInquiryHandling() function to patch bugged boards. 943 */ 944 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 945 (xs->xs_periph->periph_lun == 0) && 946 (xs->datalen - qdonep->remain_bytes) >= 8) { 947 AscInquiryHandling(sc, 948 xs->xs_periph->periph_target & 0x7, 949 (ASC_SCSI_INQUIRY *) xs->data); 950 } 951 break; 952 953 case ASC_QD_WITH_ERROR: 954 switch (qdonep->d3.host_stat) { 955 case ASC_QHSTA_NO_ERROR: 956 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 957 s1 = &ccb->scsi_sense; 958 s2 = &xs->sense.scsi_sense; 959 *s2 = *s1; 960 xs->error = XS_SENSE; 961 } else { 962 xs->error = XS_DRIVER_STUFFUP; 963 } 964 break; 965 966 case ASC_QHSTA_M_SEL_TIMEOUT: 967 xs->error = XS_SELTIMEOUT; 968 break; 969 970 default: 971 /* QHSTA error occurred */ 972 xs->error = XS_DRIVER_STUFFUP; 973 break; 974 } 975 break; 976 977 case ASC_QD_ABORTED_BY_HOST: 978 default: 979 xs->error = XS_DRIVER_STUFFUP; 980 break; 981 } 982 983 984 adv_free_ccb(sc, ccb); 985 scsipi_done(xs); 986 } 987
Indexes created Mon Sep 22 10:09:38 GMT 2025