1 /* $NetBSD: adv.c,v 1.44 2009/11/23 02:13:46 rmind 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 1.44 2009/11/23 02:13:46 rmind 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 <uvm/uvm_extern.h> 58 59 #include <dev/scsipi/scsi_all.h> 60 #include <dev/scsipi/scsipi_all.h> 61 #include <dev/scsipi/scsiconf.h> 62 63 #include <dev/ic/advlib.h> 64 #include <dev/ic/adv.h> 65 66 #ifndef DDB 67 #define Debugger() panic("should call debugger here (adv.c)") 68 #endif /* ! DDB */ 69 70 71 /* #define ASC_DEBUG */ 72 73 /******************************************************************************/ 74 75 76 static int adv_alloc_control_data(ASC_SOFTC *); 77 static void adv_free_control_data(ASC_SOFTC *); 78 static int adv_create_ccbs(ASC_SOFTC *, ADV_CCB *, int); 79 static void adv_free_ccb(ASC_SOFTC *, ADV_CCB *); 80 static void adv_reset_ccb(ADV_CCB *); 81 static int adv_init_ccb(ASC_SOFTC *, ADV_CCB *); 82 static ADV_CCB *adv_get_ccb(ASC_SOFTC *); 83 static void adv_queue_ccb(ASC_SOFTC *, ADV_CCB *); 84 static void adv_start_ccbs(ASC_SOFTC *); 85 86 87 static void adv_scsipi_request(struct scsipi_channel *, 88 scsipi_adapter_req_t, void *); 89 static void advminphys(struct buf *); 90 static void adv_narrow_isr_callback(ASC_SOFTC *, ASC_QDONE_INFO *); 91 92 static int adv_poll(ASC_SOFTC *, struct scsipi_xfer *, int); 93 static void adv_timeout(void *); 94 static void adv_watchdog(void *); 95 96 97 /******************************************************************************/ 98 99 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 100 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 101 102 /******************************************************************************/ 103 /* Control Blocks routines */ 104 /******************************************************************************/ 105 106 107 static int 108 adv_alloc_control_data(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 aprint_error_dev(&sc->sc_dev, "unable to allocate control structures," 119 " error = %d\n", 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 (void **) & sc->sc_control, 125 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 126 aprint_error_dev(&sc->sc_dev, "unable to map control structures, error = %d\n", 127 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 aprint_error_dev(&sc->sc_dev, "unable to create control DMA map, error = %d\n", 137 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 aprint_error_dev(&sc->sc_dev, "unable to load control DMA map, error = %d\n", 144 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(ASC_SOFTC *sc) 159 { 160 161 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control); 162 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control); 163 sc->sc_dmamap_control = NULL; 164 165 bus_dmamem_unmap(sc->sc_dmat, (void *) sc->sc_control, 166 sizeof(struct adv_control)); 167 bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg, 168 sc->sc_control_nsegs); 169 } 170 171 /* 172 * Create a set of ccbs and add them to the free list. Called once 173 * by adv_init(). We return the number of CCBs successfully created. 174 */ 175 static int 176 adv_create_ccbs(ASC_SOFTC *sc, ADV_CCB *ccbstore, int count) 177 { 178 ADV_CCB *ccb; 179 int i, error; 180 181 memset(ccbstore, 0, sizeof(ADV_CCB) * count); 182 for (i = 0; i < count; i++) { 183 ccb = &ccbstore[i]; 184 if ((error = adv_init_ccb(sc, ccb)) != 0) { 185 aprint_error_dev(&sc->sc_dev, "unable to initialize ccb, error = %d\n", 186 error); 187 return (i); 188 } 189 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 190 } 191 192 return (i); 193 } 194 195 196 /* 197 * A ccb is put onto the free list. 198 */ 199 static void 200 adv_free_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 201 { 202 int s; 203 204 s = splbio(); 205 adv_reset_ccb(ccb); 206 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 207 splx(s); 208 } 209 210 211 static void 212 adv_reset_ccb(ADV_CCB *ccb) 213 { 214 215 ccb->flags = 0; 216 } 217 218 219 static int 220 adv_init_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 221 { 222 int hashnum, error; 223 224 callout_init(&ccb->ccb_watchdog, 0); 225 226 /* 227 * Create the DMA map for this CCB. 228 */ 229 error = bus_dmamap_create(sc->sc_dmat, 230 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 231 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 232 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 233 if (error) { 234 aprint_error_dev(&sc->sc_dev, "unable to create DMA map, error = %d\n", 235 error); 236 return (error); 237 } 238 239 /* 240 * put in the phystokv hash table 241 * Never gets taken out. 242 */ 243 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 244 ADV_CCB_OFF(ccb); 245 hashnum = CCB_HASH(ccb->hashkey); 246 ccb->nexthash = sc->sc_ccbhash[hashnum]; 247 sc->sc_ccbhash[hashnum] = ccb; 248 249 adv_reset_ccb(ccb); 250 return (0); 251 } 252 253 254 /* 255 * Get a free ccb 256 * 257 * If there are none, see if we can allocate a new one 258 */ 259 static ADV_CCB * 260 adv_get_ccb(ASC_SOFTC *sc) 261 { 262 ADV_CCB *ccb = 0; 263 int s; 264 265 s = splbio(); 266 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 267 if (ccb != NULL) { 268 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 269 ccb->flags |= CCB_ALLOC; 270 } 271 splx(s); 272 return (ccb); 273 } 274 275 276 /* 277 * Given a physical address, find the ccb that it corresponds to. 278 */ 279 ADV_CCB * 280 adv_ccb_phys_kv(ASC_SOFTC *sc, u_long ccb_phys) 281 { 282 int hashnum = CCB_HASH(ccb_phys); 283 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 284 285 while (ccb) { 286 if (ccb->hashkey == ccb_phys) 287 break; 288 ccb = ccb->nexthash; 289 } 290 return (ccb); 291 } 292 293 294 /* 295 * Queue a CCB to be sent to the controller, and send it if possible. 296 */ 297 static void 298 adv_queue_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) 299 { 300 301 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 302 303 adv_start_ccbs(sc); 304 } 305 306 307 static void 308 adv_start_ccbs(ASC_SOFTC *sc) 309 { 310 ADV_CCB *ccb; 311 312 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 313 if (ccb->flags & CCB_WATCHDOG) 314 callout_stop(&ccb->ccb_watchdog); 315 316 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 317 ccb->flags |= CCB_WATCHDOG; 318 callout_reset(&ccb->ccb_watchdog, 319 (ADV_WATCH_TIMEOUT * hz) / 1000, 320 adv_watchdog, ccb); 321 break; 322 } 323 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 324 325 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 326 callout_reset(&ccb->xs->xs_callout, 327 mstohz(ccb->timeout), adv_timeout, ccb); 328 } 329 } 330 331 332 /******************************************************************************/ 333 /* SCSI layer interfacing routines */ 334 /******************************************************************************/ 335 336 337 int 338 adv_init(ASC_SOFTC *sc) 339 { 340 int warn; 341 342 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 343 aprint_error("adv_init: failed to find signature\n"); 344 return (1); 345 } 346 347 /* 348 * Read the board configuration 349 */ 350 AscInitASC_SOFTC(sc); 351 warn = AscInitFromEEP(sc); 352 if (warn) { 353 aprint_error_dev(&sc->sc_dev, "-get: "); 354 switch (warn) { 355 case -1: 356 aprint_normal("Chip is not halted\n"); 357 break; 358 359 case -2: 360 aprint_normal("Couldn't get MicroCode Start" 361 " address\n"); 362 break; 363 364 case ASC_WARN_IO_PORT_ROTATE: 365 aprint_normal("I/O port address modified\n"); 366 break; 367 368 case ASC_WARN_AUTO_CONFIG: 369 aprint_normal("I/O port increment switch enabled\n"); 370 break; 371 372 case ASC_WARN_EEPROM_CHKSUM: 373 aprint_normal("EEPROM checksum error\n"); 374 break; 375 376 case ASC_WARN_IRQ_MODIFIED: 377 aprint_normal("IRQ modified\n"); 378 break; 379 380 case ASC_WARN_CMD_QNG_CONFLICT: 381 aprint_normal("tag queuing enabled w/o disconnects\n"); 382 break; 383 384 default: 385 aprint_normal("unknown warning %d\n", warn); 386 } 387 } 388 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 389 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 390 391 /* 392 * Modify the board configuration 393 */ 394 warn = AscInitFromASC_SOFTC(sc); 395 if (warn) { 396 aprint_error_dev(&sc->sc_dev, "-set: "); 397 switch (warn) { 398 case ASC_WARN_CMD_QNG_CONFLICT: 399 aprint_normal("tag queuing enabled w/o disconnects\n"); 400 break; 401 402 case ASC_WARN_AUTO_CONFIG: 403 aprint_normal("I/O port increment switch enabled\n"); 404 break; 405 406 default: 407 aprint_normal("unknown warning %d\n", warn); 408 } 409 } 410 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 411 412 return (0); 413 } 414 415 416 void 417 adv_attach(ASC_SOFTC *sc) 418 { 419 struct scsipi_adapter *adapt = &sc->sc_adapter; 420 struct scsipi_channel *chan = &sc->sc_channel; 421 int i, error; 422 423 /* 424 * Initialize board RISC chip and enable interrupts. 425 */ 426 switch (AscInitDriver(sc)) { 427 case 0: 428 /* AllOK */ 429 break; 430 431 case 1: 432 panic("%s: bad signature", device_xname(&sc->sc_dev)); 433 break; 434 435 case 2: 436 panic("%s: unable to load MicroCode", 437 device_xname(&sc->sc_dev)); 438 break; 439 440 case 3: 441 panic("%s: unable to initialize MicroCode", 442 device_xname(&sc->sc_dev)); 443 break; 444 445 default: 446 panic("%s: unable to initialize board RISC chip", 447 device_xname(&sc->sc_dev)); 448 } 449 450 /* 451 * Fill in the scsipi_adapter. 452 */ 453 memset(adapt, 0, sizeof(*adapt)); 454 adapt->adapt_dev = &sc->sc_dev; 455 adapt->adapt_nchannels = 1; 456 /* adapt_openings initialized below */ 457 /* adapt_max_periph initialized below */ 458 adapt->adapt_request = adv_scsipi_request; 459 adapt->adapt_minphys = advminphys; 460 461 /* 462 * Fill in the scsipi_channel. 463 */ 464 memset(chan, 0, sizeof(*chan)); 465 chan->chan_adapter = adapt; 466 chan->chan_bustype = &scsi_bustype; 467 chan->chan_channel = 0; 468 chan->chan_ntargets = 8; 469 chan->chan_nluns = 8; 470 chan->chan_id = sc->chip_scsi_id; 471 472 TAILQ_INIT(&sc->sc_free_ccb); 473 TAILQ_INIT(&sc->sc_waiting_ccb); 474 475 /* 476 * Allocate the Control Blocks and the overrun buffer. 477 */ 478 error = adv_alloc_control_data(sc); 479 if (error) 480 return; /* (error) */ 481 482 /* 483 * Create and initialize the Control Blocks. 484 */ 485 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 486 if (i == 0) { 487 aprint_error_dev(&sc->sc_dev, "unable to create control blocks\n"); 488 return; /* (ENOMEM) */ ; 489 } else if (i != ADV_MAX_CCB) { 490 aprint_error_dev(&sc->sc_dev, 491 "WARNING: only %d of %d control blocks created\n", 492 i, ADV_MAX_CCB); 493 } 494 495 adapt->adapt_openings = i; 496 adapt->adapt_max_periph = adapt->adapt_openings; 497 498 sc->sc_child = config_found(&sc->sc_dev, chan, scsiprint); 499 } 500 501 int 502 adv_detach(ASC_SOFTC *sc, int flags) 503 { 504 int rv = 0; 505 506 if (sc->sc_child != NULL) 507 rv = config_detach(sc->sc_child, flags); 508 509 adv_free_control_data(sc); 510 511 return (rv); 512 } 513 514 static void 515 advminphys(struct buf *bp) 516 { 517 518 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 519 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 520 minphys(bp); 521 } 522 523 524 /* 525 * start a scsi operation given the command and the data address. Also needs 526 * the unit, target and lu. 527 */ 528 529 static void 530 adv_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) 531 { 532 struct scsipi_xfer *xs; 533 struct scsipi_periph *periph; 534 ASC_SOFTC *sc = (void *)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, "adv_scsi_cmd, more than %d" 640 " DMA segments\n", 641 ASC_MAX_SG_LIST); 642 } else { 643 aprint_error_dev(&sc->sc_dev, "adv_scsi_cmd, error %d" 644 " loading DMA map\n", 645 error); 646 } 647 648 out_bad: 649 adv_free_ccb(sc, ccb); 650 scsipi_done(xs); 651 return; 652 } 653 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 654 ccb->dmamap_xfer->dm_mapsize, 655 (flags & XS_CTL_DATA_IN) ? 656 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 657 658 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 659 660 for (nsegs = 0; 661 nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 662 ccb->sghead.sg_list[nsegs].addr = 663 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 664 ccb->sghead.sg_list[nsegs].bytes = 665 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 666 } 667 668 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 669 ccb->dmamap_xfer->dm_nsegs; 670 671 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 672 ccb->scsiq.sg_head = &ccb->sghead; 673 ccb->scsiq.q1.data_addr = 0; 674 ccb->scsiq.q1.data_cnt = 0; 675 } else { 676 /* 677 * No data xfer, use non S/G values. 678 */ 679 ccb->scsiq.q1.data_addr = 0; 680 ccb->scsiq.q1.data_cnt = 0; 681 } 682 683 #ifdef ASC_DEBUG 684 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX\n", 685 periph->periph_target, 686 periph->periph_lun, xs->cmd->opcode, 687 (unsigned long)ccb); 688 #endif 689 s = splbio(); 690 adv_queue_ccb(sc, ccb); 691 splx(s); 692 693 if ((flags & XS_CTL_POLL) == 0) 694 return; 695 696 /* Not allowed to use interrupts, poll for completion. */ 697 if (adv_poll(sc, xs, ccb->timeout)) { 698 adv_timeout(ccb); 699 if (adv_poll(sc, xs, ccb->timeout)) 700 adv_timeout(ccb); 701 } 702 return; 703 704 case ADAPTER_REQ_GROW_RESOURCES: 705 /* XXX Not supported. */ 706 return; 707 708 case ADAPTER_REQ_SET_XFER_MODE: 709 { 710 /* 711 * We can't really set the mode, but we know how to 712 * query what the firmware negotiated. 713 */ 714 struct scsipi_xfer_mode *xm = arg; 715 u_int8_t sdtr_data; 716 ASC_SCSI_BIT_ID_TYPE tid_bit; 717 718 tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target); 719 720 xm->xm_mode = 0; 721 xm->xm_period = 0; 722 xm->xm_offset = 0; 723 724 if (sc->init_sdtr & tid_bit) { 725 xm->xm_mode |= PERIPH_CAP_SYNC; 726 sdtr_data = sc->sdtr_data[xm->xm_target]; 727 xm->xm_period = 728 sc->sdtr_period_tbl[(sdtr_data >> 4) & 729 (sc->max_sdtr_index - 1)]; 730 xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET; 731 } 732 733 if (sc->use_tagged_qng & tid_bit) 734 xm->xm_mode |= PERIPH_CAP_TQING; 735 736 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); 737 return; 738 } 739 } 740 } 741 742 int 743 adv_intr(void *arg) 744 { 745 ASC_SOFTC *sc = arg; 746 747 #ifdef ASC_DEBUG 748 int int_pend = FALSE; 749 750 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 751 { 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 (void *)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 (void *)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 xs->resid = 0; 903 break; 904 905 default: 906 /* QHSTA error occurred */ 907 xs->error = XS_DRIVER_STUFFUP; 908 break; 909 } 910 911 /* 912 * If an INQUIRY command completed successfully, then call 913 * the AscInquiryHandling() function to patch bugged boards. 914 */ 915 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 916 (xs->xs_periph->periph_lun == 0) && 917 (xs->datalen - qdonep->remain_bytes) >= 8) { 918 AscInquiryHandling(sc, 919 xs->xs_periph->periph_target & 0x7, 920 (ASC_SCSI_INQUIRY *) xs->data); 921 } 922 break; 923 924 case ASC_QD_WITH_ERROR: 925 switch (qdonep->d3.host_stat) { 926 case ASC_QHSTA_NO_ERROR: 927 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 928 s1 = &ccb->scsi_sense; 929 s2 = &xs->sense.scsi_sense; 930 *s2 = *s1; 931 xs->error = XS_SENSE; 932 } else { 933 xs->error = XS_DRIVER_STUFFUP; 934 } 935 break; 936 937 case ASC_QHSTA_M_SEL_TIMEOUT: 938 xs->error = XS_SELTIMEOUT; 939 break; 940 941 default: 942 /* QHSTA error occurred */ 943 xs->error = XS_DRIVER_STUFFUP; 944 break; 945 } 946 break; 947 948 case ASC_QD_ABORTED_BY_HOST: 949 default: 950 xs->error = XS_DRIVER_STUFFUP; 951 break; 952 } 953 954 955 adv_free_ccb(sc, ccb); 956 scsipi_done(xs); 957 } 958