1 /* $OpenBSD: adv.c,v 1.37 2017/09/08 05:36:52 deraadt Exp $ */ 2 /* $NetBSD: adv.c,v 1.6 1998/10/28 20:39:45 dante Exp $ */ 3 4 /* 5 * Generic driver for the Advanced Systems Inc. Narrow SCSI controllers 6 * 7 * Copyright (c) 1998 The NetBSD Foundation, Inc. 8 * All rights reserved. 9 * 10 * Author: Baldassare Dante Profeta <dante@mclink.it> 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/errno.h> 38 #include <sys/ioctl.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 #include <sys/buf.h> 42 43 #include <machine/bus.h> 44 #include <machine/intr.h> 45 46 #include <scsi/scsi_all.h> 47 #include <scsi/scsiconf.h> 48 49 #include <dev/ic/adv.h> 50 #include <dev/ic/advlib.h> 51 52 /* #define ASC_DEBUG */ 53 54 /******************************************************************************/ 55 56 57 static int adv_alloc_ccbs(ASC_SOFTC *); 58 static int adv_create_ccbs(ASC_SOFTC *, ADV_CCB *, int); 59 void adv_ccb_free(void *, void *); 60 static void adv_reset_ccb(ADV_CCB *); 61 static int adv_init_ccb(ASC_SOFTC *, ADV_CCB *); 62 void *adv_ccb_alloc(void *); 63 static void adv_queue_ccb(ASC_SOFTC *, ADV_CCB *); 64 static void adv_start_ccbs(ASC_SOFTC *); 65 66 static u_int8_t *adv_alloc_overrunbuf(char *dvname, bus_dma_tag_t); 67 68 static void adv_scsi_cmd(struct scsi_xfer *); 69 static void advminphys(struct buf *, struct scsi_link *); 70 static void adv_narrow_isr_callback(ASC_SOFTC *, ASC_QDONE_INFO *); 71 72 static int adv_poll(ASC_SOFTC *, struct scsi_xfer *, int); 73 static void adv_timeout(void *); 74 static void adv_watchdog(void *); 75 76 77 /******************************************************************************/ 78 79 80 struct cfdriver adv_cd = { 81 NULL, "adv", DV_DULL 82 }; 83 84 85 struct scsi_adapter adv_switch = 86 { 87 adv_scsi_cmd, /* called to start/enqueue a SCSI command */ 88 advminphys, /* to limit the transfer to max device can do */ 89 0, /* IT SEEMS IT IS NOT USED YET */ 90 0, /* as above... */ 91 }; 92 93 94 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 95 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 96 97 98 /******************************************************************************/ 99 /* Control Blocks routines */ 100 /******************************************************************************/ 101 102 103 static int 104 adv_alloc_ccbs(sc) 105 ASC_SOFTC *sc; 106 { 107 bus_dma_segment_t seg; 108 int error, rseg; 109 110 /* 111 * Allocate the control blocks. 112 */ 113 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 114 NBPG, 0, &seg, 1, &rseg, 115 BUS_DMA_NOWAIT | BUS_DMA_ZERO)) != 0) { 116 printf("%s: unable to allocate control structures," 117 " error = %d\n", sc->sc_dev.dv_xname, error); 118 return (error); 119 } 120 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 121 sizeof(struct adv_control), (caddr_t *) & sc->sc_control, 122 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 123 printf("%s: unable to map control structures, error = %d\n", 124 sc->sc_dev.dv_xname, error); 125 return (error); 126 } 127 /* 128 * Create and load the DMA map used for the control blocks. 129 */ 130 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 131 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 132 &sc->sc_dmamap_control)) != 0) { 133 printf("%s: unable to create control DMA map, error = %d\n", 134 sc->sc_dev.dv_xname, error); 135 return (error); 136 } 137 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 138 sc->sc_control, sizeof(struct adv_control), NULL, 139 BUS_DMA_NOWAIT)) != 0) { 140 printf("%s: unable to load control DMA map, error = %d\n", 141 sc->sc_dev.dv_xname, error); 142 return (error); 143 } 144 return (0); 145 } 146 147 148 /* 149 * Create a set of ccbs and add them to the free list. Called once 150 * by adv_init(). We return the number of CCBs successfully created. 151 * CCB data is already zeroed on allocation. 152 */ 153 static int 154 adv_create_ccbs(sc, ccbstore, count) 155 ASC_SOFTC *sc; 156 ADV_CCB *ccbstore; 157 int count; 158 { 159 ADV_CCB *ccb; 160 int i, error; 161 162 for (i = 0; i < count; i++) { 163 ccb = &ccbstore[i]; 164 if ((error = adv_init_ccb(sc, ccb)) != 0) { 165 printf("%s: unable to initialize ccb, error = %d\n", 166 sc->sc_dev.dv_xname, error); 167 return (i); 168 } 169 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 170 } 171 172 return (i); 173 } 174 175 176 /* 177 * A ccb is put onto the free list. 178 */ 179 void 180 adv_ccb_free(xsc, xccb) 181 void *xsc, *xccb; 182 { 183 ASC_SOFTC *sc = xsc; 184 ADV_CCB *ccb = xccb; 185 186 adv_reset_ccb(ccb); 187 188 mtx_enter(&sc->sc_ccb_mtx); 189 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 190 mtx_leave(&sc->sc_ccb_mtx); 191 } 192 193 194 static void 195 adv_reset_ccb(ccb) 196 ADV_CCB *ccb; 197 { 198 199 ccb->flags = 0; 200 } 201 202 203 static int 204 adv_init_ccb(sc, ccb) 205 ASC_SOFTC *sc; 206 ADV_CCB *ccb; 207 { 208 int error; 209 210 /* 211 * Create the DMA map for this CCB. 212 */ 213 error = bus_dmamap_create(sc->sc_dmat, 214 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 215 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 216 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 217 if (error) { 218 printf("%s: unable to create DMA map, error = %d\n", 219 sc->sc_dev.dv_xname, error); 220 return (error); 221 } 222 adv_reset_ccb(ccb); 223 return (0); 224 } 225 226 227 /* 228 * Get a free ccb 229 */ 230 void * 231 adv_ccb_alloc(xsc) 232 void *xsc; 233 { 234 ASC_SOFTC *sc = xsc; 235 ADV_CCB *ccb; 236 237 mtx_enter(&sc->sc_ccb_mtx); 238 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 239 if (ccb) { 240 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 241 ccb->flags |= CCB_ALLOC; 242 } 243 mtx_leave(&sc->sc_ccb_mtx); 244 245 return (ccb); 246 } 247 248 /* 249 * Queue a CCB to be sent to the controller, and send it if possible. 250 */ 251 static void 252 adv_queue_ccb(sc, ccb) 253 ASC_SOFTC *sc; 254 ADV_CCB *ccb; 255 { 256 257 timeout_set(&ccb->xs->stimeout, adv_timeout, ccb); 258 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 259 260 adv_start_ccbs(sc); 261 } 262 263 264 static void 265 adv_start_ccbs(sc) 266 ASC_SOFTC *sc; 267 { 268 ADV_CCB *ccb; 269 struct scsi_xfer *xs; 270 271 while ((ccb = TAILQ_FIRST(&sc->sc_waiting_ccb)) != NULL) { 272 273 xs = ccb->xs; 274 if (ccb->flags & CCB_WATCHDOG) 275 timeout_del(&xs->stimeout); 276 277 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 278 ccb->flags |= CCB_WATCHDOG; 279 timeout_set(&xs->stimeout, adv_watchdog, ccb); 280 timeout_add_msec(&xs->stimeout, ADV_WATCH_TIMEOUT); 281 break; 282 } 283 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 284 285 if ((ccb->xs->flags & SCSI_POLL) == 0) { 286 timeout_set(&xs->stimeout, adv_timeout, ccb); 287 timeout_add_msec(&xs->stimeout, ccb->timeout); 288 } 289 } 290 } 291 292 293 /******************************************************************************/ 294 /* DMA able memory allocation routines */ 295 /******************************************************************************/ 296 297 298 /* 299 * Allocate a DMA able memory for overrun_buffer. 300 * This memory can be safely shared among all the AdvanSys boards. 301 */ 302 u_int8_t * 303 adv_alloc_overrunbuf(dvname, dmat) 304 char *dvname; 305 bus_dma_tag_t dmat; 306 { 307 static u_int8_t *overrunbuf = NULL; 308 309 bus_dmamap_t ovrbuf_dmamap; 310 bus_dma_segment_t seg; 311 int rseg, error; 312 313 314 /* 315 * if an overrun buffer has been already allocated don't allocate it 316 * again. Instead return the address of the allocated buffer. 317 */ 318 if (overrunbuf) 319 return (overrunbuf); 320 321 322 if ((error = bus_dmamem_alloc(dmat, ASC_OVERRUN_BSIZE, 323 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 324 printf("%s: unable to allocate overrun buffer, error = %d\n", 325 dvname, error); 326 return (0); 327 } 328 if ((error = bus_dmamem_map(dmat, &seg, rseg, ASC_OVERRUN_BSIZE, 329 (caddr_t *) & overrunbuf, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 330 printf("%s: unable to map overrun buffer, error = %d\n", 331 dvname, error); 332 333 bus_dmamem_free(dmat, &seg, 1); 334 return (0); 335 } 336 if ((error = bus_dmamap_create(dmat, ASC_OVERRUN_BSIZE, 1, 337 ASC_OVERRUN_BSIZE, 0, BUS_DMA_NOWAIT, &ovrbuf_dmamap)) != 0) { 338 printf("%s: unable to create overrun buffer DMA map," 339 " error = %d\n", dvname, error); 340 341 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 342 bus_dmamem_free(dmat, &seg, 1); 343 return (0); 344 } 345 if ((error = bus_dmamap_load(dmat, ovrbuf_dmamap, overrunbuf, 346 ASC_OVERRUN_BSIZE, NULL, BUS_DMA_NOWAIT)) != 0) { 347 printf("%s: unable to load overrun buffer DMA map," 348 " error = %d\n", dvname, error); 349 350 bus_dmamap_destroy(dmat, ovrbuf_dmamap); 351 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 352 bus_dmamem_free(dmat, &seg, 1); 353 return (0); 354 } 355 return (overrunbuf); 356 } 357 358 359 /******************************************************************************/ 360 /* SCSI layer interfacing routines */ 361 /******************************************************************************/ 362 363 364 int 365 adv_init(sc) 366 ASC_SOFTC *sc; 367 { 368 int warn; 369 370 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) 371 panic("adv_init: adv_find_signature failed"); 372 373 /* 374 * Read the board configuration 375 */ 376 AscInitASC_SOFTC(sc); 377 warn = AscInitFromEEP(sc); 378 if (warn) { 379 printf("%s -get: ", sc->sc_dev.dv_xname); 380 switch (warn) { 381 case -1: 382 printf("Chip is not halted\n"); 383 break; 384 385 case -2: 386 printf("Couldn't get MicroCode Start" 387 " address\n"); 388 break; 389 390 case ASC_WARN_IO_PORT_ROTATE: 391 printf("I/O port address modified\n"); 392 break; 393 394 case ASC_WARN_AUTO_CONFIG: 395 printf("I/O port increment switch enabled\n"); 396 break; 397 398 case ASC_WARN_EEPROM_CHKSUM: 399 printf("EEPROM checksum error\n"); 400 break; 401 402 case ASC_WARN_IRQ_MODIFIED: 403 printf("IRQ modified\n"); 404 break; 405 406 case ASC_WARN_CMD_QNG_CONFLICT: 407 printf("tag queuing enabled w/o disconnects\n"); 408 break; 409 410 default: 411 printf("unknown warning %d\n", warn); 412 } 413 } 414 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 415 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 416 417 /* 418 * Modify the board configuration 419 */ 420 warn = AscInitFromASC_SOFTC(sc); 421 if (warn) { 422 printf("%s -set: ", sc->sc_dev.dv_xname); 423 switch (warn) { 424 case ASC_WARN_CMD_QNG_CONFLICT: 425 printf("tag queuing enabled w/o disconnects\n"); 426 break; 427 428 case ASC_WARN_AUTO_CONFIG: 429 printf("I/O port increment switch enabled\n"); 430 break; 431 432 default: 433 printf("unknown warning %d\n", warn); 434 } 435 } 436 sc->isr_callback = (ulong) adv_narrow_isr_callback; 437 438 if (!(sc->overrun_buf = adv_alloc_overrunbuf(sc->sc_dev.dv_xname, 439 sc->sc_dmat))) { 440 return (1); 441 } 442 443 return (0); 444 } 445 446 447 void 448 adv_attach(sc) 449 ASC_SOFTC *sc; 450 { 451 struct scsibus_attach_args saa; 452 int i, error; 453 454 /* 455 * Initialize board RISC chip and enable interrupts. 456 */ 457 switch (AscInitDriver(sc)) { 458 case 0: 459 /* AllOK */ 460 break; 461 462 case 1: 463 panic("%s: bad signature", sc->sc_dev.dv_xname); 464 break; 465 466 case 2: 467 panic("%s: unable to load MicroCode", 468 sc->sc_dev.dv_xname); 469 break; 470 471 case 3: 472 panic("%s: unable to initialize MicroCode", 473 sc->sc_dev.dv_xname); 474 break; 475 476 default: 477 panic("%s: unable to initialize board RISC chip", 478 sc->sc_dev.dv_xname); 479 } 480 481 TAILQ_INIT(&sc->sc_free_ccb); 482 TAILQ_INIT(&sc->sc_waiting_ccb); 483 484 mtx_init(&sc->sc_ccb_mtx, IPL_BIO); 485 scsi_iopool_init(&sc->sc_iopool, sc, adv_ccb_alloc, adv_ccb_free); 486 487 /* 488 * fill in the prototype scsi_link. 489 */ 490 sc->sc_link.adapter_softc = sc; 491 sc->sc_link.adapter_target = sc->chip_scsi_id; 492 sc->sc_link.adapter = &adv_switch; 493 sc->sc_link.openings = 4; 494 sc->sc_link.pool = &sc->sc_iopool; 495 sc->sc_link.adapter_buswidth = 7; 496 497 /* 498 * Allocate the Control Blocks. 499 */ 500 error = adv_alloc_ccbs(sc); 501 if (error) 502 return; /* (error) */ ; 503 504 /* 505 * Create and initialize the Control Blocks. 506 */ 507 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 508 if (i == 0) { 509 printf("%s: unable to create control blocks\n", 510 sc->sc_dev.dv_xname); 511 return; /* (ENOMEM) */ ; 512 } else if (i != ADV_MAX_CCB) { 513 printf("%s: WARNING: only %d of %d control blocks created\n", 514 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 515 } 516 517 bzero(&saa, sizeof(saa)); 518 saa.saa_sc_link = &sc->sc_link; 519 config_found(&sc->sc_dev, &saa, scsiprint); 520 } 521 522 523 static void 524 advminphys(struct buf *bp, struct scsi_link *sl) 525 { 526 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 527 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 528 minphys(bp); 529 } 530 531 532 /* 533 * start a scsi operation given the command and the data address. Also needs 534 * the unit, target and lu. 535 */ 536 static void 537 adv_scsi_cmd(xs) 538 struct scsi_xfer *xs; 539 { 540 struct scsi_link *sc_link = xs->sc_link; 541 ASC_SOFTC *sc = sc_link->adapter_softc; 542 bus_dma_tag_t dmat = sc->sc_dmat; 543 ADV_CCB *ccb; 544 int flags, error, nsegs; 545 546 /* 547 * get a ccb to use. If the transfer 548 * is from a buf (possibly from interrupt time) 549 * then we can't allow it to sleep 550 */ 551 552 flags = xs->flags; 553 ccb = xs->io; 554 555 ccb->xs = xs; 556 ccb->timeout = xs->timeout; 557 558 /* 559 * Build up the request 560 */ 561 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 562 563 ccb->scsiq.q2.ccb_ptr = (ulong) ccb; 564 565 ccb->scsiq.cdbptr = &xs->cmd->opcode; 566 ccb->scsiq.q2.cdb_len = xs->cmdlen; 567 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->target); 568 ccb->scsiq.q1.target_lun = sc_link->lun; 569 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->target, 570 sc_link->lun); 571 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 572 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 573 ccb->scsiq.q1.sense_len = sizeof(struct scsi_sense_data); 574 575 /* 576 * If there are any outstanding requests for the current target, 577 * then every 255th request send an ORDERED request. This heuristic 578 * tries to retain the benefit of request sorting while preventing 579 * request starvation. 255 is the max number of tags or pending commands 580 * a device may have outstanding. 581 */ 582 sc->reqcnt[sc_link->target]++; 583 if ((sc->reqcnt[sc_link->target] > 0) && 584 (sc->reqcnt[sc_link->target] % 255) == 0) { 585 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 586 } else { 587 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 588 } 589 590 591 if (xs->datalen) { 592 /* 593 * Map the DMA transfer. 594 */ 595 error = bus_dmamap_load(dmat, 596 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 597 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 598 599 if (error) { 600 if (error == EFBIG) { 601 printf("%s: adv_scsi_cmd, more than %d dma" 602 " segments\n", 603 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 604 } else { 605 printf("%s: adv_scsi_cmd, error %d loading" 606 " dma map\n", 607 sc->sc_dev.dv_xname, error); 608 } 609 610 xs->error = XS_DRIVER_STUFFUP; 611 scsi_done(xs); 612 return; 613 } 614 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 615 0, ccb->dmamap_xfer->dm_mapsize, 616 ((flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 617 BUS_DMASYNC_PREWRITE)); 618 619 620 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 621 622 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 623 624 ccb->sghead.sg_list[nsegs].addr = 625 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 626 ccb->sghead.sg_list[nsegs].bytes = 627 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 628 } 629 630 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 631 ccb->dmamap_xfer->dm_nsegs; 632 633 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 634 ccb->scsiq.sg_head = &ccb->sghead; 635 ccb->scsiq.q1.data_addr = 0; 636 ccb->scsiq.q1.data_cnt = 0; 637 } else { 638 /* 639 * No data xfer, use non S/G values. 640 */ 641 ccb->scsiq.q1.data_addr = 0; 642 ccb->scsiq.q1.data_cnt = 0; 643 } 644 645 #ifdef ASC_DEBUG 646 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 647 sc_link->scsipi_scsi.target, 648 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 649 (unsigned long)ccb); 650 #endif 651 /* 652 * Usually return SUCCESSFULLY QUEUED 653 */ 654 if ((flags & SCSI_POLL) == 0) 655 return; 656 657 /* 658 * If we can't use interrupts, poll on completion 659 */ 660 if (adv_poll(sc, xs, ccb->timeout)) { 661 adv_timeout(ccb); 662 if (adv_poll(sc, xs, ccb->timeout)) 663 adv_timeout(ccb); 664 } 665 } 666 667 668 int 669 adv_intr(arg) 670 void *arg; 671 { 672 ASC_SOFTC *sc = arg; 673 674 #ifdef ASC_DEBUG 675 int int_pend = FALSE; 676 677 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 678 { 679 int_pend = TRUE; 680 printf("ISR - "); 681 } 682 #endif 683 AscISR(sc); 684 #ifdef ASC_DEBUG 685 if(int_pend) 686 printf("\n"); 687 #endif 688 689 return (1); 690 } 691 692 693 /* 694 * Poll a particular unit, looking for a particular xs 695 */ 696 static int 697 adv_poll(sc, xs, count) 698 ASC_SOFTC *sc; 699 struct scsi_xfer *xs; 700 int count; 701 { 702 int s; 703 704 /* timeouts are in msec, so we loop in 1000 usec cycles */ 705 while (count) { 706 s = splbio(); 707 adv_intr(sc); 708 splx(s); 709 if (xs->flags & ITSDONE) 710 return (0); 711 delay(1000); /* only happens in boot so ok */ 712 count--; 713 } 714 return (1); 715 } 716 717 718 static void 719 adv_timeout(arg) 720 void *arg; 721 { 722 ADV_CCB *ccb = arg; 723 struct scsi_xfer *xs = ccb->xs; 724 struct scsi_link *sc_link = xs->sc_link; 725 ASC_SOFTC *sc = sc_link->adapter_softc; 726 int s; 727 728 sc_print_addr(sc_link); 729 printf("timed out"); 730 731 s = splbio(); 732 733 /* 734 * If it has been through before, then a previous abort has failed, 735 * don't try abort again, reset the bus instead. 736 */ 737 if (ccb->flags & CCB_ABORT) { 738 /* abort timed out */ 739 printf(" AGAIN. Resetting Bus\n"); 740 /* Lets try resetting the bus! */ 741 if (AscResetBus(sc) == ASC_ERROR) { 742 ccb->timeout = sc->scsi_reset_wait; 743 adv_queue_ccb(sc, ccb); 744 } 745 } else { 746 /* abort the operation that has timed out */ 747 printf("\n"); 748 AscAbortCCB(sc, (u_int32_t) ccb); 749 ccb->xs->error = XS_TIMEOUT; 750 ccb->timeout = ADV_ABORT_TIMEOUT; 751 ccb->flags |= CCB_ABORT; 752 adv_queue_ccb(sc, ccb); 753 } 754 755 splx(s); 756 } 757 758 759 static void 760 adv_watchdog(arg) 761 void *arg; 762 { 763 ADV_CCB *ccb = arg; 764 struct scsi_xfer *xs = ccb->xs; 765 struct scsi_link *sc_link = xs->sc_link; 766 ASC_SOFTC *sc = sc_link->adapter_softc; 767 int s; 768 769 s = splbio(); 770 771 ccb->flags &= ~CCB_WATCHDOG; 772 adv_start_ccbs(sc); 773 774 splx(s); 775 } 776 777 778 /******************************************************************************/ 779 /* NARROW and WIDE boards Interrupt callbacks */ 780 /******************************************************************************/ 781 782 783 /* 784 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 785 * 786 * Interrupt callback function for the Narrow SCSI Asc Library. 787 */ 788 static void 789 adv_narrow_isr_callback(sc, qdonep) 790 ASC_SOFTC *sc; 791 ASC_QDONE_INFO *qdonep; 792 { 793 bus_dma_tag_t dmat = sc->sc_dmat; 794 ADV_CCB *ccb = (ADV_CCB *) qdonep->d2.ccb_ptr; 795 struct scsi_xfer *xs = ccb->xs; 796 struct scsi_sense_data *s1, *s2; 797 798 799 #ifdef ASC_DEBUG 800 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 801 (unsigned long)ccb, 802 xs->sc_link->scsipi_scsi.target, 803 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 804 #endif 805 timeout_del(&xs->stimeout); 806 807 /* 808 * If we were a data transfer, unload the map that described 809 * the data buffer. 810 */ 811 if (xs->datalen) { 812 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 813 0, ccb->dmamap_xfer->dm_mapsize, 814 ((xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 815 BUS_DMASYNC_POSTWRITE)); 816 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 817 } 818 if ((ccb->flags & CCB_ALLOC) == 0) { 819 panic("%s: exiting ccb not allocated!", sc->sc_dev.dv_xname); 820 return; 821 } 822 /* 823 * 'qdonep' contains the command's ending status. 824 */ 825 #ifdef ASC_DEBUG 826 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 827 #endif 828 switch (qdonep->d3.done_stat) { 829 case ASC_QD_NO_ERROR: 830 switch (qdonep->d3.host_stat) { 831 case ASC_QHSTA_NO_ERROR: 832 xs->error = XS_NOERROR; 833 xs->resid = 0; 834 break; 835 836 default: 837 /* QHSTA error occurred */ 838 xs->error = XS_DRIVER_STUFFUP; 839 break; 840 } 841 842 /* 843 * If an INQUIRY command completed successfully, then call 844 * the AscInquiryHandling() function to patch bugged boards. 845 */ 846 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 847 (xs->sc_link->lun == 0) && 848 (xs->datalen - qdonep->remain_bytes) >= 8) { 849 AscInquiryHandling(sc, 850 xs->sc_link->target & 0x7, 851 (ASC_SCSI_INQUIRY *) xs->data); 852 } 853 break; 854 855 case ASC_QD_WITH_ERROR: 856 switch (qdonep->d3.host_stat) { 857 case ASC_QHSTA_NO_ERROR: 858 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 859 s1 = &ccb->scsi_sense; 860 s2 = &xs->sense; 861 *s2 = *s1; 862 xs->error = XS_SENSE; 863 } else { 864 xs->error = XS_DRIVER_STUFFUP; 865 } 866 break; 867 868 default: 869 /* QHSTA error occurred */ 870 xs->error = XS_DRIVER_STUFFUP; 871 break; 872 } 873 break; 874 875 case ASC_QD_ABORTED_BY_HOST: 876 default: 877 xs->error = XS_DRIVER_STUFFUP; 878 break; 879 } 880 881 scsi_done(xs); 882 } 883