adv.c revision 1.15
1 /* $NetBSD: adv.c,v 1.15 2000/02/12 19:12:52 thorpej 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/kernel.h> 44 #include <sys/errno.h> 45 #include <sys/ioctl.h> 46 #include <sys/device.h> 47 #include <sys/malloc.h> 48 #include <sys/buf.h> 49 #include <sys/proc.h> 50 #include <sys/user.h> 51 52 #include <machine/bus.h> 53 #include <machine/intr.h> 54 55 #include <vm/vm.h> 56 #include <vm/vm_param.h> 57 #include <vm/pmap.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 __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 *, int)); 82 static void adv_queue_ccb __P((ASC_SOFTC *, ADV_CCB *)); 83 static void adv_start_ccbs __P((ASC_SOFTC *)); 84 85 86 static int adv_scsi_cmd __P((struct scsipi_xfer *)); 87 static void advminphys __P((struct buf *)); 88 static void adv_narrow_isr_callback __P((ASC_SOFTC *, ASC_QDONE_INFO *)); 89 90 static int adv_poll __P((ASC_SOFTC *, struct scsipi_xfer *, int)); 91 static void adv_timeout __P((void *)); 92 static void adv_watchdog __P((void *)); 93 94 95 /******************************************************************************/ 96 97 98 /* the below structure is so we have a default dev struct for out link struct */ 99 struct scsipi_device adv_dev = 100 { 101 NULL, /* Use default error handler */ 102 NULL, /* have a queue, served by this */ 103 NULL, /* have no async handler */ 104 NULL, /* Use default 'done' routine */ 105 }; 106 107 108 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 109 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 110 111 112 /******************************************************************************/ 113 /* Control Blocks routines */ 114 /******************************************************************************/ 115 116 117 static int 118 adv_alloc_control_data(sc) 119 ASC_SOFTC *sc; 120 { 121 bus_dma_segment_t seg; 122 int error, rseg; 123 124 /* 125 * Allocate the control blocks. 126 */ 127 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 128 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 129 printf("%s: unable to allocate control structures," 130 " error = %d\n", sc->sc_dev.dv_xname, error); 131 return (error); 132 } 133 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 134 sizeof(struct adv_control), (caddr_t *) & sc->sc_control, 135 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 136 printf("%s: unable to map control structures, error = %d\n", 137 sc->sc_dev.dv_xname, error); 138 return (error); 139 } 140 /* 141 * Create and load the DMA map used for the control blocks. 142 */ 143 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 144 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 145 &sc->sc_dmamap_control)) != 0) { 146 printf("%s: unable to create control DMA map, error = %d\n", 147 sc->sc_dev.dv_xname, error); 148 return (error); 149 } 150 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 151 sc->sc_control, sizeof(struct adv_control), NULL, 152 BUS_DMA_NOWAIT)) != 0) { 153 printf("%s: unable to load control DMA map, error = %d\n", 154 sc->sc_dev.dv_xname, error); 155 return (error); 156 } 157 158 /* 159 * Initialize the overrun_buf address. 160 */ 161 sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + 162 offsetof(struct adv_control, overrun_buf); 163 164 return (0); 165 } 166 167 168 /* 169 * Create a set of ccbs and add them to the free list. Called once 170 * by adv_init(). We return the number of CCBs successfully created. 171 */ 172 static int 173 adv_create_ccbs(sc, ccbstore, count) 174 ASC_SOFTC *sc; 175 ADV_CCB *ccbstore; 176 int count; 177 { 178 ADV_CCB *ccb; 179 int i, error; 180 181 bzero(ccbstore, 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 printf("%s: unable to initialize ccb, error = %d\n", 186 sc->sc_dev.dv_xname, 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(sc, ccb) 201 ASC_SOFTC *sc; 202 ADV_CCB *ccb; 203 { 204 int s; 205 206 s = splbio(); 207 208 adv_reset_ccb(ccb); 209 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 210 211 /* 212 * If there were none, wake anybody waiting for one to come free, 213 * starting with queued entries. 214 */ 215 if (ccb->chain.tqe_next == 0) 216 wakeup(&sc->sc_free_ccb); 217 218 splx(s); 219 } 220 221 222 static void 223 adv_reset_ccb(ccb) 224 ADV_CCB *ccb; 225 { 226 227 ccb->flags = 0; 228 } 229 230 231 static int 232 adv_init_ccb(sc, ccb) 233 ASC_SOFTC *sc; 234 ADV_CCB *ccb; 235 { 236 int hashnum, error; 237 238 /* 239 * Create the DMA map for this CCB. 240 */ 241 error = bus_dmamap_create(sc->sc_dmat, 242 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 243 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 244 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 245 if (error) { 246 printf("%s: unable to create DMA map, error = %d\n", 247 sc->sc_dev.dv_xname, error); 248 return (error); 249 } 250 251 /* 252 * put in the phystokv hash table 253 * Never gets taken out. 254 */ 255 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 256 ADV_CCB_OFF(ccb); 257 hashnum = CCB_HASH(ccb->hashkey); 258 ccb->nexthash = sc->sc_ccbhash[hashnum]; 259 sc->sc_ccbhash[hashnum] = ccb; 260 261 adv_reset_ccb(ccb); 262 return (0); 263 } 264 265 266 /* 267 * Get a free ccb 268 * 269 * If there are none, see if we can allocate a new one 270 */ 271 static ADV_CCB * 272 adv_get_ccb(sc, flags) 273 ASC_SOFTC *sc; 274 int flags; 275 { 276 ADV_CCB *ccb = 0; 277 int s; 278 279 s = splbio(); 280 281 /* 282 * If we can and have to, sleep waiting for one to come free 283 * but only if we can't allocate a new one. 284 */ 285 for (;;) { 286 ccb = sc->sc_free_ccb.tqh_first; 287 if (ccb) { 288 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 289 break; 290 } 291 if ((flags & XS_CTL_NOSLEEP) != 0) 292 goto out; 293 294 tsleep(&sc->sc_free_ccb, PRIBIO, "advccb", 0); 295 } 296 297 ccb->flags |= CCB_ALLOC; 298 299 out: 300 splx(s); 301 return (ccb); 302 } 303 304 305 /* 306 * Given a physical address, find the ccb that it corresponds to. 307 */ 308 ADV_CCB * 309 adv_ccb_phys_kv(sc, ccb_phys) 310 ASC_SOFTC *sc; 311 u_long ccb_phys; 312 { 313 int hashnum = CCB_HASH(ccb_phys); 314 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 315 316 while (ccb) { 317 if (ccb->hashkey == ccb_phys) 318 break; 319 ccb = ccb->nexthash; 320 } 321 return (ccb); 322 } 323 324 325 /* 326 * Queue a CCB to be sent to the controller, and send it if possible. 327 */ 328 static void 329 adv_queue_ccb(sc, ccb) 330 ASC_SOFTC *sc; 331 ADV_CCB *ccb; 332 { 333 334 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 335 336 adv_start_ccbs(sc); 337 } 338 339 340 static void 341 adv_start_ccbs(sc) 342 ASC_SOFTC *sc; 343 { 344 ADV_CCB *ccb; 345 346 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 347 if (ccb->flags & CCB_WATCHDOG) 348 untimeout(adv_watchdog, ccb); 349 350 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 351 ccb->flags |= CCB_WATCHDOG; 352 timeout(adv_watchdog, ccb, 353 (ADV_WATCH_TIMEOUT * hz) / 1000); 354 break; 355 } 356 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 357 358 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 359 timeout(adv_timeout, ccb, (ccb->timeout * hz) / 1000); 360 } 361 } 362 363 364 /******************************************************************************/ 365 /* SCSI layer interfacing routines */ 366 /******************************************************************************/ 367 368 369 int 370 adv_init(sc) 371 ASC_SOFTC *sc; 372 { 373 int warn; 374 375 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 376 printf("adv_init: failed to find signature\n"); 377 return (1); 378 } 379 380 /* 381 * Read the board configuration 382 */ 383 AscInitASC_SOFTC(sc); 384 warn = AscInitFromEEP(sc); 385 if (warn) { 386 printf("%s -get: ", sc->sc_dev.dv_xname); 387 switch (warn) { 388 case -1: 389 printf("Chip is not halted\n"); 390 break; 391 392 case -2: 393 printf("Couldn't get MicroCode Start" 394 " address\n"); 395 break; 396 397 case ASC_WARN_IO_PORT_ROTATE: 398 printf("I/O port address modified\n"); 399 break; 400 401 case ASC_WARN_AUTO_CONFIG: 402 printf("I/O port increment switch enabled\n"); 403 break; 404 405 case ASC_WARN_EEPROM_CHKSUM: 406 printf("EEPROM checksum error\n"); 407 break; 408 409 case ASC_WARN_IRQ_MODIFIED: 410 printf("IRQ modified\n"); 411 break; 412 413 case ASC_WARN_CMD_QNG_CONFLICT: 414 printf("tag queuing enabled w/o disconnects\n"); 415 break; 416 417 default: 418 printf("unknown warning %d\n", warn); 419 } 420 } 421 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 422 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 423 424 /* 425 * Modify the board configuration 426 */ 427 warn = AscInitFromASC_SOFTC(sc); 428 if (warn) { 429 printf("%s -set: ", sc->sc_dev.dv_xname); 430 switch (warn) { 431 case ASC_WARN_CMD_QNG_CONFLICT: 432 printf("tag queuing enabled w/o disconnects\n"); 433 break; 434 435 case ASC_WARN_AUTO_CONFIG: 436 printf("I/O port increment switch enabled\n"); 437 break; 438 439 default: 440 printf("unknown warning %d\n", warn); 441 } 442 } 443 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 444 445 return (0); 446 } 447 448 449 void 450 adv_attach(sc) 451 ASC_SOFTC *sc; 452 { 453 int i, error; 454 455 /* 456 * Initialize board RISC chip and enable interrupts. 457 */ 458 switch (AscInitDriver(sc)) { 459 case 0: 460 /* AllOK */ 461 break; 462 463 case 1: 464 panic("%s: bad signature", sc->sc_dev.dv_xname); 465 break; 466 467 case 2: 468 panic("%s: unable to load MicroCode", 469 sc->sc_dev.dv_xname); 470 break; 471 472 case 3: 473 panic("%s: unable to initialize MicroCode", 474 sc->sc_dev.dv_xname); 475 break; 476 477 default: 478 panic("%s: unable to initialize board RISC chip", 479 sc->sc_dev.dv_xname); 480 } 481 482 /* 483 * Fill in the adapter. 484 */ 485 sc->sc_adapter.scsipi_cmd = adv_scsi_cmd; 486 sc->sc_adapter.scsipi_minphys = advminphys; 487 488 /* 489 * fill in the prototype scsipi_link. 490 */ 491 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 492 sc->sc_link.adapter_softc = sc; 493 sc->sc_link.scsipi_scsi.adapter_target = sc->chip_scsi_id; 494 sc->sc_link.adapter = &sc->sc_adapter; 495 sc->sc_link.device = &adv_dev; 496 sc->sc_link.openings = 4; 497 sc->sc_link.scsipi_scsi.max_target = 7; 498 sc->sc_link.scsipi_scsi.max_lun = 7; 499 sc->sc_link.type = BUS_SCSI; 500 501 502 TAILQ_INIT(&sc->sc_free_ccb); 503 TAILQ_INIT(&sc->sc_waiting_ccb); 504 TAILQ_INIT(&sc->sc_queue); 505 506 507 /* 508 * Allocate the Control Blocks and the overrun buffer. 509 */ 510 error = adv_alloc_control_data(sc); 511 if (error) 512 return; /* (error) */ 513 514 /* 515 * Create and initialize the Control Blocks. 516 */ 517 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 518 if (i == 0) { 519 printf("%s: unable to create control blocks\n", 520 sc->sc_dev.dv_xname); 521 return; /* (ENOMEM) */ ; 522 } else if (i != ADV_MAX_CCB) { 523 printf("%s: WARNING: only %d of %d control blocks created\n", 524 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 525 } 526 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 527 } 528 529 530 static void 531 advminphys(bp) 532 struct buf *bp; 533 { 534 535 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 536 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 537 minphys(bp); 538 } 539 540 541 /* 542 * start a scsi operation given the command and the data address. Also needs 543 * the unit, target and lu. 544 */ 545 static int 546 adv_scsi_cmd(xs) 547 struct scsipi_xfer *xs; 548 { 549 struct scsipi_link *sc_link = xs->sc_link; 550 ASC_SOFTC *sc = sc_link->adapter_softc; 551 bus_dma_tag_t dmat = sc->sc_dmat; 552 ADV_CCB *ccb; 553 int s, flags, error, nsegs; 554 int fromqueue = 0, dontqueue = 0, nowait = 0; 555 556 557 s = splbio(); /* protect the queue */ 558 559 /* 560 * If we're running the queue from adv_done(), we've been 561 * called with the first queue entry as our argument. 562 */ 563 if (xs == TAILQ_FIRST(&sc->sc_queue)) { 564 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 565 fromqueue = 1; 566 nowait = 1; 567 } else { 568 569 /* Polled requests can't be queued for later. */ 570 dontqueue = xs->xs_control & XS_CTL_POLL; 571 572 /* 573 * If there are jobs in the queue, run them first. 574 */ 575 if (TAILQ_FIRST(&sc->sc_queue) != NULL) { 576 /* 577 * If we can't queue, we have to abort, since 578 * we have to preserve order. 579 */ 580 if (dontqueue) { 581 splx(s); 582 xs->error = XS_DRIVER_STUFFUP; 583 return (TRY_AGAIN_LATER); 584 } 585 /* 586 * Swap with the first queue entry. 587 */ 588 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 589 xs = TAILQ_FIRST(&sc->sc_queue); 590 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 591 fromqueue = 1; 592 } 593 } 594 595 596 /* 597 * get a ccb to use. If the transfer 598 * is from a buf (possibly from interrupt time) 599 * then we can't allow it to sleep 600 */ 601 602 flags = xs->xs_control; 603 if (nowait) 604 flags |= XS_CTL_NOSLEEP; 605 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 606 /* 607 * If we can't queue, we lose. 608 */ 609 if (dontqueue) { 610 splx(s); 611 xs->error = XS_DRIVER_STUFFUP; 612 return (TRY_AGAIN_LATER); 613 } 614 /* 615 * Stuff ourselves into the queue, in front 616 * if we came off in the first place. 617 */ 618 if (fromqueue) 619 TAILQ_INSERT_HEAD(&sc->sc_queue, xs, adapter_q); 620 else 621 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 622 splx(s); 623 return (SUCCESSFULLY_QUEUED); 624 } 625 splx(s); /* done playing with the queue */ 626 627 ccb->xs = xs; 628 ccb->timeout = xs->timeout; 629 630 /* 631 * Build up the request 632 */ 633 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 634 635 ccb->scsiq.q2.ccb_ptr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 636 ADV_CCB_OFF(ccb); 637 638 ccb->scsiq.cdbptr = &xs->cmd->opcode; 639 ccb->scsiq.q2.cdb_len = xs->cmdlen; 640 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 641 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 642 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 643 sc_link->scsipi_scsi.lun); 644 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 645 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 646 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 647 648 /* 649 * If there are any outstanding requests for the current target, 650 * then every 255th request send an ORDERED request. This heuristic 651 * tries to retain the benefit of request sorting while preventing 652 * request starvation. 255 is the max number of tags or pending commands 653 * a device may have outstanding. 654 */ 655 sc->reqcnt[sc_link->scsipi_scsi.target]++; 656 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 657 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 658 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 659 } else { 660 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 661 } 662 663 664 if (xs->datalen) { 665 /* 666 * Map the DMA transfer. 667 */ 668 #ifdef TFS 669 if (flags & SCSI_DATA_UIO) { 670 error = bus_dmamap_load_uio(dmat, 671 ccb->dmamap_xfer, (struct uio *) xs->data, 672 (flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 673 } else 674 #endif /* TFS */ 675 { 676 error = bus_dmamap_load(dmat, 677 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 678 (flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 679 } 680 681 if (error) { 682 if (error == EFBIG) { 683 printf("%s: adv_scsi_cmd, more than %d dma" 684 " segments\n", 685 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 686 } else { 687 printf("%s: adv_scsi_cmd, error %d loading" 688 " dma map\n", 689 sc->sc_dev.dv_xname, error); 690 } 691 692 xs->error = XS_DRIVER_STUFFUP; 693 adv_free_ccb(sc, ccb); 694 return (COMPLETE); 695 } 696 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 697 ccb->dmamap_xfer->dm_mapsize, 698 (flags & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : 699 BUS_DMASYNC_PREWRITE); 700 701 702 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 703 704 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 705 706 ccb->sghead.sg_list[nsegs].addr = 707 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 708 ccb->sghead.sg_list[nsegs].bytes = 709 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 710 } 711 712 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 713 ccb->dmamap_xfer->dm_nsegs; 714 715 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 716 ccb->scsiq.sg_head = &ccb->sghead; 717 ccb->scsiq.q1.data_addr = 0; 718 ccb->scsiq.q1.data_cnt = 0; 719 } else { 720 /* 721 * No data xfer, use non S/G values. 722 */ 723 ccb->scsiq.q1.data_addr = 0; 724 ccb->scsiq.q1.data_cnt = 0; 725 } 726 727 #ifdef ASC_DEBUG 728 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 729 sc_link->scsipi_scsi.target, 730 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 731 (unsigned long)ccb); 732 #endif 733 s = splbio(); 734 adv_queue_ccb(sc, ccb); 735 splx(s); 736 737 /* 738 * Usually return SUCCESSFULLY QUEUED 739 */ 740 if ((flags & XS_CTL_POLL) == 0) 741 return (SUCCESSFULLY_QUEUED); 742 743 /* 744 * If we can't use interrupts, poll on completion 745 */ 746 if (adv_poll(sc, xs, ccb->timeout)) { 747 adv_timeout(ccb); 748 if (adv_poll(sc, xs, ccb->timeout)) 749 adv_timeout(ccb); 750 } 751 return (COMPLETE); 752 } 753 754 755 int 756 adv_intr(arg) 757 void *arg; 758 { 759 ASC_SOFTC *sc = arg; 760 struct scsipi_xfer *xs; 761 762 #ifdef ASC_DEBUG 763 int int_pend = FALSE; 764 765 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 766 { 767 int_pend = TRUE; 768 printf("ISR - "); 769 } 770 #endif 771 AscISR(sc); 772 #ifdef ASC_DEBUG 773 if(int_pend) 774 printf("\n"); 775 #endif 776 777 /* 778 * If there are queue entries in the software queue, try to 779 * run the first one. We should be more or less guaranteed 780 * to succeed, since we just freed a CCB. 781 * 782 * NOTE: adv_scsi_cmd() relies on our calling it with 783 * the first entry in the queue. 784 */ 785 if ((xs = TAILQ_FIRST(&sc->sc_queue)) != NULL) 786 (void) adv_scsi_cmd(xs); 787 788 return (1); 789 } 790 791 792 /* 793 * Poll a particular unit, looking for a particular xs 794 */ 795 static int 796 adv_poll(sc, xs, count) 797 ASC_SOFTC *sc; 798 struct scsipi_xfer *xs; 799 int count; 800 { 801 802 /* timeouts are in msec, so we loop in 1000 usec cycles */ 803 while (count) { 804 adv_intr(sc); 805 if (xs->xs_status & XS_STS_DONE) 806 return (0); 807 delay(1000); /* only happens in boot so ok */ 808 count--; 809 } 810 return (1); 811 } 812 813 814 static void 815 adv_timeout(arg) 816 void *arg; 817 { 818 ADV_CCB *ccb = arg; 819 struct scsipi_xfer *xs = ccb->xs; 820 struct scsipi_link *sc_link = xs->sc_link; 821 ASC_SOFTC *sc = sc_link->adapter_softc; 822 int s; 823 824 scsi_print_addr(sc_link); 825 printf("timed out"); 826 827 s = splbio(); 828 829 /* 830 * If it has been through before, then a previous abort has failed, 831 * don't try abort again, reset the bus instead. 832 */ 833 if (ccb->flags & CCB_ABORT) { 834 /* abort timed out */ 835 printf(" AGAIN. Resetting Bus\n"); 836 /* Lets try resetting the bus! */ 837 if (AscResetBus(sc) == ASC_ERROR) { 838 ccb->timeout = sc->scsi_reset_wait; 839 adv_queue_ccb(sc, ccb); 840 } 841 } else { 842 /* abort the operation that has timed out */ 843 printf("\n"); 844 AscAbortCCB(sc, ccb); 845 ccb->xs->error = XS_TIMEOUT; 846 ccb->timeout = ADV_ABORT_TIMEOUT; 847 ccb->flags |= CCB_ABORT; 848 adv_queue_ccb(sc, ccb); 849 } 850 851 splx(s); 852 } 853 854 855 static void 856 adv_watchdog(arg) 857 void *arg; 858 { 859 ADV_CCB *ccb = arg; 860 struct scsipi_xfer *xs = ccb->xs; 861 struct scsipi_link *sc_link = xs->sc_link; 862 ASC_SOFTC *sc = sc_link->adapter_softc; 863 int s; 864 865 s = splbio(); 866 867 ccb->flags &= ~CCB_WATCHDOG; 868 adv_start_ccbs(sc); 869 870 splx(s); 871 } 872 873 874 /******************************************************************************/ 875 /* NARROW boards Interrupt callbacks */ 876 /******************************************************************************/ 877 878 879 /* 880 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 881 * 882 * Interrupt callback function for the Narrow SCSI Asc Library. 883 */ 884 static void 885 adv_narrow_isr_callback(sc, qdonep) 886 ASC_SOFTC *sc; 887 ASC_QDONE_INFO *qdonep; 888 { 889 bus_dma_tag_t dmat = sc->sc_dmat; 890 ADV_CCB *ccb; 891 struct scsipi_xfer *xs; 892 struct scsipi_sense_data *s1, *s2; 893 894 895 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 896 xs = ccb->xs; 897 898 #ifdef ASC_DEBUG 899 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 900 (unsigned long)ccb, 901 xs->sc_link->scsipi_scsi.target, 902 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 903 #endif 904 untimeout(adv_timeout, ccb); 905 906 /* 907 * If we were a data transfer, unload the map that described 908 * the data buffer. 909 */ 910 if (xs->datalen) { 911 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 912 ccb->dmamap_xfer->dm_mapsize, 913 (xs->xs_control & XS_CTL_DATA_IN) ? 914 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 915 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 916 } 917 if ((ccb->flags & CCB_ALLOC) == 0) { 918 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 919 Debugger(); 920 return; 921 } 922 /* 923 * 'qdonep' contains the command's ending status. 924 */ 925 #ifdef ASC_DEBUG 926 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 927 #endif 928 switch (qdonep->d3.done_stat) { 929 case ASC_QD_NO_ERROR: 930 switch (qdonep->d3.host_stat) { 931 case ASC_QHSTA_NO_ERROR: 932 xs->error = XS_NOERROR; 933 xs->resid = 0; 934 break; 935 936 default: 937 /* QHSTA error occurred */ 938 xs->error = XS_DRIVER_STUFFUP; 939 break; 940 } 941 942 /* 943 * If an INQUIRY command completed successfully, then call 944 * the AscInquiryHandling() function to patch bugged boards. 945 */ 946 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 947 (xs->sc_link->scsipi_scsi.lun == 0) && 948 (xs->datalen - qdonep->remain_bytes) >= 8) { 949 AscInquiryHandling(sc, 950 xs->sc_link->scsipi_scsi.target & 0x7, 951 (ASC_SCSI_INQUIRY *) xs->data); 952 } 953 break; 954 955 case ASC_QD_WITH_ERROR: 956 switch (qdonep->d3.host_stat) { 957 case ASC_QHSTA_NO_ERROR: 958 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 959 s1 = &ccb->scsi_sense; 960 s2 = &xs->sense.scsi_sense; 961 *s2 = *s1; 962 xs->error = XS_SENSE; 963 } else { 964 xs->error = XS_DRIVER_STUFFUP; 965 } 966 break; 967 968 default: 969 /* QHSTA error occurred */ 970 xs->error = XS_DRIVER_STUFFUP; 971 break; 972 } 973 break; 974 975 case ASC_QD_ABORTED_BY_HOST: 976 default: 977 xs->error = XS_DRIVER_STUFFUP; 978 break; 979 } 980 981 982 adv_free_ccb(sc, ccb); 983 xs->xs_status |= XS_STS_DONE; 984 scsipi_done(xs); 985 } 986
Indexes created Tue Sep 23 07:09:52 GMT 2025