adv.c revision 1.17
1 /* $NetBSD: adv.c,v 1.17 2000/06/26 14:38:50 mrg 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 <vm/vm.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 int adv_create_ccbs __P((ASC_SOFTC *, ADV_CCB *, int)); 77 static void adv_free_ccb __P((ASC_SOFTC *, ADV_CCB *)); 78 static void adv_reset_ccb __P((ADV_CCB *)); 79 static int adv_init_ccb __P((ASC_SOFTC *, ADV_CCB *)); 80 static ADV_CCB *adv_get_ccb __P((ASC_SOFTC *, int)); 81 static void adv_queue_ccb __P((ASC_SOFTC *, ADV_CCB *)); 82 static void adv_start_ccbs __P((ASC_SOFTC *)); 83 84 85 static int adv_scsi_cmd __P((struct scsipi_xfer *)); 86 static void advminphys __P((struct buf *)); 87 static void adv_narrow_isr_callback __P((ASC_SOFTC *, ASC_QDONE_INFO *)); 88 89 static int adv_poll __P((ASC_SOFTC *, struct scsipi_xfer *, int)); 90 static void adv_timeout __P((void *)); 91 static void adv_watchdog __P((void *)); 92 93 94 /******************************************************************************/ 95 96 97 /* the below structure is so we have a default dev struct for out link struct */ 98 struct scsipi_device adv_dev = 99 { 100 NULL, /* Use default error handler */ 101 NULL, /* have a queue, served by this */ 102 NULL, /* have no async handler */ 103 NULL, /* Use default 'done' routine */ 104 }; 105 106 107 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 108 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 109 110 111 /******************************************************************************/ 112 /* Control Blocks routines */ 113 /******************************************************************************/ 114 115 116 static int 117 adv_alloc_control_data(sc) 118 ASC_SOFTC *sc; 119 { 120 bus_dma_segment_t seg; 121 int error, rseg; 122 123 /* 124 * Allocate the control blocks. 125 */ 126 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 127 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 128 printf("%s: unable to allocate control structures," 129 " error = %d\n", sc->sc_dev.dv_xname, error); 130 return (error); 131 } 132 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 133 sizeof(struct adv_control), (caddr_t *) & sc->sc_control, 134 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 135 printf("%s: unable to map control structures, error = %d\n", 136 sc->sc_dev.dv_xname, error); 137 return (error); 138 } 139 /* 140 * Create and load the DMA map used for the control blocks. 141 */ 142 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 143 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 144 &sc->sc_dmamap_control)) != 0) { 145 printf("%s: unable to create control DMA map, error = %d\n", 146 sc->sc_dev.dv_xname, error); 147 return (error); 148 } 149 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 150 sc->sc_control, sizeof(struct adv_control), NULL, 151 BUS_DMA_NOWAIT)) != 0) { 152 printf("%s: unable to load control DMA map, error = %d\n", 153 sc->sc_dev.dv_xname, error); 154 return (error); 155 } 156 157 /* 158 * Initialize the overrun_buf address. 159 */ 160 sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + 161 offsetof(struct adv_control, overrun_buf); 162 163 return (0); 164 } 165 166 167 /* 168 * Create a set of ccbs and add them to the free list. Called once 169 * by adv_init(). We return the number of CCBs successfully created. 170 */ 171 static int 172 adv_create_ccbs(sc, ccbstore, count) 173 ASC_SOFTC *sc; 174 ADV_CCB *ccbstore; 175 int count; 176 { 177 ADV_CCB *ccb; 178 int i, error; 179 180 bzero(ccbstore, sizeof(ADV_CCB) * count); 181 for (i = 0; i < count; i++) { 182 ccb = &ccbstore[i]; 183 if ((error = adv_init_ccb(sc, ccb)) != 0) { 184 printf("%s: unable to initialize ccb, error = %d\n", 185 sc->sc_dev.dv_xname, error); 186 return (i); 187 } 188 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 189 } 190 191 return (i); 192 } 193 194 195 /* 196 * A ccb is put onto the free list. 197 */ 198 static void 199 adv_free_ccb(sc, ccb) 200 ASC_SOFTC *sc; 201 ADV_CCB *ccb; 202 { 203 int s; 204 205 s = splbio(); 206 207 adv_reset_ccb(ccb); 208 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 209 210 /* 211 * If there were none, wake anybody waiting for one to come free, 212 * starting with queued entries. 213 */ 214 if (ccb->chain.tqe_next == 0) 215 wakeup(&sc->sc_free_ccb); 216 217 splx(s); 218 } 219 220 221 static void 222 adv_reset_ccb(ccb) 223 ADV_CCB *ccb; 224 { 225 226 ccb->flags = 0; 227 } 228 229 230 static int 231 adv_init_ccb(sc, ccb) 232 ASC_SOFTC *sc; 233 ADV_CCB *ccb; 234 { 235 int hashnum, error; 236 237 callout_init(&ccb->ccb_watchdog); 238 239 /* 240 * Create the DMA map for this CCB. 241 */ 242 error = bus_dmamap_create(sc->sc_dmat, 243 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 244 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 245 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 246 if (error) { 247 printf("%s: unable to create DMA map, error = %d\n", 248 sc->sc_dev.dv_xname, error); 249 return (error); 250 } 251 252 /* 253 * put in the phystokv hash table 254 * Never gets taken out. 255 */ 256 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 257 ADV_CCB_OFF(ccb); 258 hashnum = CCB_HASH(ccb->hashkey); 259 ccb->nexthash = sc->sc_ccbhash[hashnum]; 260 sc->sc_ccbhash[hashnum] = ccb; 261 262 adv_reset_ccb(ccb); 263 return (0); 264 } 265 266 267 /* 268 * Get a free ccb 269 * 270 * If there are none, see if we can allocate a new one 271 */ 272 static ADV_CCB * 273 adv_get_ccb(sc, flags) 274 ASC_SOFTC *sc; 275 int flags; 276 { 277 ADV_CCB *ccb = 0; 278 int s; 279 280 s = splbio(); 281 282 /* 283 * If we can and have to, sleep waiting for one to come free 284 * but only if we can't allocate a new one. 285 */ 286 for (;;) { 287 ccb = sc->sc_free_ccb.tqh_first; 288 if (ccb) { 289 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 290 break; 291 } 292 if ((flags & XS_CTL_NOSLEEP) != 0) 293 goto out; 294 295 tsleep(&sc->sc_free_ccb, PRIBIO, "advccb", 0); 296 } 297 298 ccb->flags |= CCB_ALLOC; 299 300 out: 301 splx(s); 302 return (ccb); 303 } 304 305 306 /* 307 * Given a physical address, find the ccb that it corresponds to. 308 */ 309 ADV_CCB * 310 adv_ccb_phys_kv(sc, ccb_phys) 311 ASC_SOFTC *sc; 312 u_long ccb_phys; 313 { 314 int hashnum = CCB_HASH(ccb_phys); 315 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 316 317 while (ccb) { 318 if (ccb->hashkey == ccb_phys) 319 break; 320 ccb = ccb->nexthash; 321 } 322 return (ccb); 323 } 324 325 326 /* 327 * Queue a CCB to be sent to the controller, and send it if possible. 328 */ 329 static void 330 adv_queue_ccb(sc, ccb) 331 ASC_SOFTC *sc; 332 ADV_CCB *ccb; 333 { 334 335 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 336 337 adv_start_ccbs(sc); 338 } 339 340 341 static void 342 adv_start_ccbs(sc) 343 ASC_SOFTC *sc; 344 { 345 ADV_CCB *ccb; 346 347 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 348 if (ccb->flags & CCB_WATCHDOG) 349 callout_stop(&ccb->ccb_watchdog); 350 351 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 352 ccb->flags |= CCB_WATCHDOG; 353 callout_reset(&ccb->ccb_watchdog, 354 (ADV_WATCH_TIMEOUT * hz) / 1000, 355 adv_watchdog, ccb); 356 break; 357 } 358 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 359 360 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 361 callout_reset(&ccb->xs->xs_callout, 362 (ccb->timeout * hz) / 1000, 363 adv_timeout, ccb); 364 } 365 } 366 367 368 /******************************************************************************/ 369 /* SCSI layer interfacing routines */ 370 /******************************************************************************/ 371 372 373 int 374 adv_init(sc) 375 ASC_SOFTC *sc; 376 { 377 int warn; 378 379 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 380 printf("adv_init: failed to find signature\n"); 381 return (1); 382 } 383 384 /* 385 * Read the board configuration 386 */ 387 AscInitASC_SOFTC(sc); 388 warn = AscInitFromEEP(sc); 389 if (warn) { 390 printf("%s -get: ", sc->sc_dev.dv_xname); 391 switch (warn) { 392 case -1: 393 printf("Chip is not halted\n"); 394 break; 395 396 case -2: 397 printf("Couldn't get MicroCode Start" 398 " address\n"); 399 break; 400 401 case ASC_WARN_IO_PORT_ROTATE: 402 printf("I/O port address modified\n"); 403 break; 404 405 case ASC_WARN_AUTO_CONFIG: 406 printf("I/O port increment switch enabled\n"); 407 break; 408 409 case ASC_WARN_EEPROM_CHKSUM: 410 printf("EEPROM checksum error\n"); 411 break; 412 413 case ASC_WARN_IRQ_MODIFIED: 414 printf("IRQ modified\n"); 415 break; 416 417 case ASC_WARN_CMD_QNG_CONFLICT: 418 printf("tag queuing enabled w/o disconnects\n"); 419 break; 420 421 default: 422 printf("unknown warning %d\n", warn); 423 } 424 } 425 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 426 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 427 428 /* 429 * Modify the board configuration 430 */ 431 warn = AscInitFromASC_SOFTC(sc); 432 if (warn) { 433 printf("%s -set: ", sc->sc_dev.dv_xname); 434 switch (warn) { 435 case ASC_WARN_CMD_QNG_CONFLICT: 436 printf("tag queuing enabled w/o disconnects\n"); 437 break; 438 439 case ASC_WARN_AUTO_CONFIG: 440 printf("I/O port increment switch enabled\n"); 441 break; 442 443 default: 444 printf("unknown warning %d\n", warn); 445 } 446 } 447 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 448 449 return (0); 450 } 451 452 453 void 454 adv_attach(sc) 455 ASC_SOFTC *sc; 456 { 457 int i, error; 458 459 /* 460 * Initialize board RISC chip and enable interrupts. 461 */ 462 switch (AscInitDriver(sc)) { 463 case 0: 464 /* AllOK */ 465 break; 466 467 case 1: 468 panic("%s: bad signature", sc->sc_dev.dv_xname); 469 break; 470 471 case 2: 472 panic("%s: unable to load MicroCode", 473 sc->sc_dev.dv_xname); 474 break; 475 476 case 3: 477 panic("%s: unable to initialize MicroCode", 478 sc->sc_dev.dv_xname); 479 break; 480 481 default: 482 panic("%s: unable to initialize board RISC chip", 483 sc->sc_dev.dv_xname); 484 } 485 486 /* 487 * Fill in the adapter. 488 */ 489 sc->sc_adapter.scsipi_cmd = adv_scsi_cmd; 490 sc->sc_adapter.scsipi_minphys = advminphys; 491 492 /* 493 * fill in the prototype scsipi_link. 494 */ 495 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 496 sc->sc_link.adapter_softc = sc; 497 sc->sc_link.scsipi_scsi.adapter_target = sc->chip_scsi_id; 498 sc->sc_link.adapter = &sc->sc_adapter; 499 sc->sc_link.device = &adv_dev; 500 sc->sc_link.openings = 4; 501 sc->sc_link.scsipi_scsi.max_target = 7; 502 sc->sc_link.scsipi_scsi.max_lun = 7; 503 sc->sc_link.type = BUS_SCSI; 504 505 506 TAILQ_INIT(&sc->sc_free_ccb); 507 TAILQ_INIT(&sc->sc_waiting_ccb); 508 TAILQ_INIT(&sc->sc_queue); 509 510 511 /* 512 * Allocate the Control Blocks and the overrun buffer. 513 */ 514 error = adv_alloc_control_data(sc); 515 if (error) 516 return; /* (error) */ 517 518 /* 519 * Create and initialize the Control Blocks. 520 */ 521 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 522 if (i == 0) { 523 printf("%s: unable to create control blocks\n", 524 sc->sc_dev.dv_xname); 525 return; /* (ENOMEM) */ ; 526 } else if (i != ADV_MAX_CCB) { 527 printf("%s: WARNING: only %d of %d control blocks created\n", 528 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 529 } 530 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 531 } 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 static int 550 adv_scsi_cmd(xs) 551 struct scsipi_xfer *xs; 552 { 553 struct scsipi_link *sc_link = xs->sc_link; 554 ASC_SOFTC *sc = sc_link->adapter_softc; 555 bus_dma_tag_t dmat = sc->sc_dmat; 556 ADV_CCB *ccb; 557 int s, flags, error, nsegs; 558 int fromqueue = 0, dontqueue = 0, nowait = 0; 559 560 561 s = splbio(); /* protect the queue */ 562 563 /* 564 * If we're running the queue from adv_done(), we've been 565 * called with the first queue entry as our argument. 566 */ 567 if (xs == TAILQ_FIRST(&sc->sc_queue)) { 568 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 569 fromqueue = 1; 570 nowait = 1; 571 } else { 572 573 /* Polled requests can't be queued for later. */ 574 dontqueue = xs->xs_control & XS_CTL_POLL; 575 576 /* 577 * If there are jobs in the queue, run them first. 578 */ 579 if (TAILQ_FIRST(&sc->sc_queue) != NULL) { 580 /* 581 * If we can't queue, we have to abort, since 582 * we have to preserve order. 583 */ 584 if (dontqueue) { 585 splx(s); 586 xs->error = XS_DRIVER_STUFFUP; 587 return (TRY_AGAIN_LATER); 588 } 589 /* 590 * Swap with the first queue entry. 591 */ 592 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 593 xs = TAILQ_FIRST(&sc->sc_queue); 594 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 595 fromqueue = 1; 596 } 597 } 598 599 600 /* 601 * get a ccb to use. If the transfer 602 * is from a buf (possibly from interrupt time) 603 * then we can't allow it to sleep 604 */ 605 606 flags = xs->xs_control; 607 if (nowait) 608 flags |= XS_CTL_NOSLEEP; 609 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 610 /* 611 * If we can't queue, we lose. 612 */ 613 if (dontqueue) { 614 splx(s); 615 xs->error = XS_DRIVER_STUFFUP; 616 return (TRY_AGAIN_LATER); 617 } 618 /* 619 * Stuff ourselves into the queue, in front 620 * if we came off in the first place. 621 */ 622 if (fromqueue) 623 TAILQ_INSERT_HEAD(&sc->sc_queue, xs, adapter_q); 624 else 625 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 626 splx(s); 627 return (SUCCESSFULLY_QUEUED); 628 } 629 splx(s); /* done playing with the queue */ 630 631 ccb->xs = xs; 632 ccb->timeout = xs->timeout; 633 634 /* 635 * Build up the request 636 */ 637 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 638 639 ccb->scsiq.q2.ccb_ptr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 640 ADV_CCB_OFF(ccb); 641 642 ccb->scsiq.cdbptr = &xs->cmd->opcode; 643 ccb->scsiq.q2.cdb_len = xs->cmdlen; 644 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 645 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 646 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 647 sc_link->scsipi_scsi.lun); 648 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 649 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 650 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 651 652 /* 653 * If there are any outstanding requests for the current target, 654 * then every 255th request send an ORDERED request. This heuristic 655 * tries to retain the benefit of request sorting while preventing 656 * request starvation. 255 is the max number of tags or pending commands 657 * a device may have outstanding. 658 */ 659 sc->reqcnt[sc_link->scsipi_scsi.target]++; 660 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 661 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 662 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 663 } else { 664 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 665 } 666 667 668 if (xs->datalen) { 669 /* 670 * Map the DMA transfer. 671 */ 672 #ifdef TFS 673 if (flags & SCSI_DATA_UIO) { 674 error = bus_dmamap_load_uio(dmat, 675 ccb->dmamap_xfer, (struct uio *) xs->data, 676 (flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 677 } else 678 #endif /* TFS */ 679 { 680 error = bus_dmamap_load(dmat, 681 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 682 (flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 683 } 684 685 if (error) { 686 if (error == EFBIG) { 687 printf("%s: adv_scsi_cmd, more than %d dma" 688 " segments\n", 689 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 690 } else { 691 printf("%s: adv_scsi_cmd, error %d loading" 692 " dma map\n", 693 sc->sc_dev.dv_xname, error); 694 } 695 696 xs->error = XS_DRIVER_STUFFUP; 697 adv_free_ccb(sc, ccb); 698 return (COMPLETE); 699 } 700 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 701 ccb->dmamap_xfer->dm_mapsize, 702 (flags & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : 703 BUS_DMASYNC_PREWRITE); 704 705 706 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 707 708 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 709 710 ccb->sghead.sg_list[nsegs].addr = 711 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 712 ccb->sghead.sg_list[nsegs].bytes = 713 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 714 } 715 716 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 717 ccb->dmamap_xfer->dm_nsegs; 718 719 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 720 ccb->scsiq.sg_head = &ccb->sghead; 721 ccb->scsiq.q1.data_addr = 0; 722 ccb->scsiq.q1.data_cnt = 0; 723 } else { 724 /* 725 * No data xfer, use non S/G values. 726 */ 727 ccb->scsiq.q1.data_addr = 0; 728 ccb->scsiq.q1.data_cnt = 0; 729 } 730 731 #ifdef ASC_DEBUG 732 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 733 sc_link->scsipi_scsi.target, 734 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 735 (unsigned long)ccb); 736 #endif 737 s = splbio(); 738 adv_queue_ccb(sc, ccb); 739 splx(s); 740 741 /* 742 * Usually return SUCCESSFULLY QUEUED 743 */ 744 if ((flags & XS_CTL_POLL) == 0) 745 return (SUCCESSFULLY_QUEUED); 746 747 /* 748 * If we can't use interrupts, poll on completion 749 */ 750 if (adv_poll(sc, xs, ccb->timeout)) { 751 adv_timeout(ccb); 752 if (adv_poll(sc, xs, ccb->timeout)) 753 adv_timeout(ccb); 754 } 755 return (COMPLETE); 756 } 757 758 759 int 760 adv_intr(arg) 761 void *arg; 762 { 763 ASC_SOFTC *sc = arg; 764 struct scsipi_xfer *xs; 765 766 #ifdef ASC_DEBUG 767 int int_pend = FALSE; 768 769 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 770 { 771 int_pend = TRUE; 772 printf("ISR - "); 773 } 774 #endif 775 AscISR(sc); 776 #ifdef ASC_DEBUG 777 if(int_pend) 778 printf("\n"); 779 #endif 780 781 /* 782 * If there are queue entries in the software queue, try to 783 * run the first one. We should be more or less guaranteed 784 * to succeed, since we just freed a CCB. 785 * 786 * NOTE: adv_scsi_cmd() relies on our calling it with 787 * the first entry in the queue. 788 */ 789 if ((xs = TAILQ_FIRST(&sc->sc_queue)) != NULL) 790 (void) adv_scsi_cmd(xs); 791 792 return (1); 793 } 794 795 796 /* 797 * Poll a particular unit, looking for a particular xs 798 */ 799 static int 800 adv_poll(sc, xs, count) 801 ASC_SOFTC *sc; 802 struct scsipi_xfer *xs; 803 int count; 804 { 805 806 /* timeouts are in msec, so we loop in 1000 usec cycles */ 807 while (count) { 808 adv_intr(sc); 809 if (xs->xs_status & XS_STS_DONE) 810 return (0); 811 delay(1000); /* only happens in boot so ok */ 812 count--; 813 } 814 return (1); 815 } 816 817 818 static void 819 adv_timeout(arg) 820 void *arg; 821 { 822 ADV_CCB *ccb = arg; 823 struct scsipi_xfer *xs = ccb->xs; 824 struct scsipi_link *sc_link = xs->sc_link; 825 ASC_SOFTC *sc = sc_link->adapter_softc; 826 int s; 827 828 scsi_print_addr(sc_link); 829 printf("timed out"); 830 831 s = splbio(); 832 833 /* 834 * If it has been through before, then a previous abort has failed, 835 * don't try abort again, reset the bus instead. 836 */ 837 if (ccb->flags & CCB_ABORT) { 838 /* abort timed out */ 839 printf(" AGAIN. Resetting Bus\n"); 840 /* Lets try resetting the bus! */ 841 if (AscResetBus(sc) == ASC_ERROR) { 842 ccb->timeout = sc->scsi_reset_wait; 843 adv_queue_ccb(sc, ccb); 844 } 845 } else { 846 /* abort the operation that has timed out */ 847 printf("\n"); 848 AscAbortCCB(sc, ccb); 849 ccb->xs->error = XS_TIMEOUT; 850 ccb->timeout = ADV_ABORT_TIMEOUT; 851 ccb->flags |= CCB_ABORT; 852 adv_queue_ccb(sc, ccb); 853 } 854 855 splx(s); 856 } 857 858 859 static void 860 adv_watchdog(arg) 861 void *arg; 862 { 863 ADV_CCB *ccb = arg; 864 struct scsipi_xfer *xs = ccb->xs; 865 struct scsipi_link *sc_link = xs->sc_link; 866 ASC_SOFTC *sc = sc_link->adapter_softc; 867 int s; 868 869 s = splbio(); 870 871 ccb->flags &= ~CCB_WATCHDOG; 872 adv_start_ccbs(sc); 873 874 splx(s); 875 } 876 877 878 /******************************************************************************/ 879 /* NARROW boards Interrupt callbacks */ 880 /******************************************************************************/ 881 882 883 /* 884 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 885 * 886 * Interrupt callback function for the Narrow SCSI Asc Library. 887 */ 888 static void 889 adv_narrow_isr_callback(sc, qdonep) 890 ASC_SOFTC *sc; 891 ASC_QDONE_INFO *qdonep; 892 { 893 bus_dma_tag_t dmat = sc->sc_dmat; 894 ADV_CCB *ccb; 895 struct scsipi_xfer *xs; 896 struct scsipi_sense_data *s1, *s2; 897 898 899 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 900 xs = ccb->xs; 901 902 #ifdef ASC_DEBUG 903 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 904 (unsigned long)ccb, 905 xs->sc_link->scsipi_scsi.target, 906 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 907 #endif 908 callout_stop(&ccb->xs->xs_callout); 909 910 /* 911 * If we were a data transfer, unload the map that described 912 * the data buffer. 913 */ 914 if (xs->datalen) { 915 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 916 ccb->dmamap_xfer->dm_mapsize, 917 (xs->xs_control & XS_CTL_DATA_IN) ? 918 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 919 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 920 } 921 if ((ccb->flags & CCB_ALLOC) == 0) { 922 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 923 Debugger(); 924 return; 925 } 926 /* 927 * 'qdonep' contains the command's ending status. 928 */ 929 #ifdef ASC_DEBUG 930 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 931 #endif 932 switch (qdonep->d3.done_stat) { 933 case ASC_QD_NO_ERROR: 934 switch (qdonep->d3.host_stat) { 935 case ASC_QHSTA_NO_ERROR: 936 xs->error = XS_NOERROR; 937 xs->resid = 0; 938 break; 939 940 default: 941 /* QHSTA error occurred */ 942 xs->error = XS_DRIVER_STUFFUP; 943 break; 944 } 945 946 /* 947 * If an INQUIRY command completed successfully, then call 948 * the AscInquiryHandling() function to patch bugged boards. 949 */ 950 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 951 (xs->sc_link->scsipi_scsi.lun == 0) && 952 (xs->datalen - qdonep->remain_bytes) >= 8) { 953 AscInquiryHandling(sc, 954 xs->sc_link->scsipi_scsi.target & 0x7, 955 (ASC_SCSI_INQUIRY *) xs->data); 956 } 957 break; 958 959 case ASC_QD_WITH_ERROR: 960 switch (qdonep->d3.host_stat) { 961 case ASC_QHSTA_NO_ERROR: 962 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 963 s1 = &ccb->scsi_sense; 964 s2 = &xs->sense.scsi_sense; 965 *s2 = *s1; 966 xs->error = XS_SENSE; 967 } else { 968 xs->error = XS_DRIVER_STUFFUP; 969 } 970 break; 971 972 default: 973 /* QHSTA error occurred */ 974 xs->error = XS_DRIVER_STUFFUP; 975 break; 976 } 977 break; 978 979 case ASC_QD_ABORTED_BY_HOST: 980 default: 981 xs->error = XS_DRIVER_STUFFUP; 982 break; 983 } 984 985 986 adv_free_ccb(sc, ccb); 987 xs->xs_status |= XS_STS_DONE; 988 scsipi_done(xs); 989 } 990
Indexes created Wed Oct 22 13:09:56 GMT 2025