adv.c revision 1.13
1 /* $NetBSD: adv.c,v 1.13 1999/08/07 07:20:15 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 & SCSI_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->flags & SCSI_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 = 1, dontqueue = 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 } else { 567 568 /* Polled requests can't be queued for later. */ 569 dontqueue = xs->flags & SCSI_POLL; 570 571 /* 572 * If there are jobs in the queue, run them first. 573 */ 574 if (TAILQ_FIRST(&sc->sc_queue) != NULL) { 575 /* 576 * If we can't queue, we have to abort, since 577 * we have to preserve order. 578 */ 579 if (dontqueue) { 580 splx(s); 581 xs->error = XS_DRIVER_STUFFUP; 582 return (TRY_AGAIN_LATER); 583 } 584 /* 585 * Swap with the first queue entry. 586 */ 587 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 588 xs = TAILQ_FIRST(&sc->sc_queue); 589 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 590 fromqueue = 1; 591 } 592 } 593 594 595 /* 596 * get a ccb to use. If the transfer 597 * is from a buf (possibly from interrupt time) 598 * then we can't allow it to sleep 599 */ 600 601 flags = xs->flags; 602 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 603 /* 604 * If we can't queue, we lose. 605 */ 606 if (dontqueue) { 607 splx(s); 608 xs->error = XS_DRIVER_STUFFUP; 609 return (TRY_AGAIN_LATER); 610 } 611 /* 612 * Stuff ourselves into the queue, in front 613 * if we came off in the first place. 614 */ 615 if (fromqueue) 616 TAILQ_INSERT_HEAD(&sc->sc_queue, xs, adapter_q); 617 else 618 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 619 splx(s); 620 return (SUCCESSFULLY_QUEUED); 621 } 622 splx(s); /* done playing with the queue */ 623 624 ccb->xs = xs; 625 ccb->timeout = xs->timeout; 626 627 /* 628 * Build up the request 629 */ 630 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 631 632 ccb->scsiq.q2.ccb_ptr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 633 ADV_CCB_OFF(ccb); 634 635 ccb->scsiq.cdbptr = &xs->cmd->opcode; 636 ccb->scsiq.q2.cdb_len = xs->cmdlen; 637 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 638 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 639 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 640 sc_link->scsipi_scsi.lun); 641 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 642 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 643 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 644 645 /* 646 * If there are any outstanding requests for the current target, 647 * then every 255th request send an ORDERED request. This heuristic 648 * tries to retain the benefit of request sorting while preventing 649 * request starvation. 255 is the max number of tags or pending commands 650 * a device may have outstanding. 651 */ 652 sc->reqcnt[sc_link->scsipi_scsi.target]++; 653 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 654 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 655 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 656 } else { 657 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 658 } 659 660 661 if (xs->datalen) { 662 /* 663 * Map the DMA transfer. 664 */ 665 #ifdef TFS 666 if (flags & SCSI_DATA_UIO) { 667 error = bus_dmamap_load_uio(dmat, 668 ccb->dmamap_xfer, (struct uio *) xs->data, 669 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 670 } else 671 #endif /* TFS */ 672 { 673 error = bus_dmamap_load(dmat, 674 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 675 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 676 } 677 678 if (error) { 679 if (error == EFBIG) { 680 printf("%s: adv_scsi_cmd, more than %d dma" 681 " segments\n", 682 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 683 } else { 684 printf("%s: adv_scsi_cmd, error %d loading" 685 " dma map\n", 686 sc->sc_dev.dv_xname, error); 687 } 688 689 xs->error = XS_DRIVER_STUFFUP; 690 adv_free_ccb(sc, ccb); 691 return (COMPLETE); 692 } 693 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 694 ccb->dmamap_xfer->dm_mapsize, 695 (flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 696 BUS_DMASYNC_PREWRITE); 697 698 699 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 700 701 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 702 703 ccb->sghead.sg_list[nsegs].addr = 704 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 705 ccb->sghead.sg_list[nsegs].bytes = 706 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 707 } 708 709 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 710 ccb->dmamap_xfer->dm_nsegs; 711 712 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 713 ccb->scsiq.sg_head = &ccb->sghead; 714 ccb->scsiq.q1.data_addr = 0; 715 ccb->scsiq.q1.data_cnt = 0; 716 } else { 717 /* 718 * No data xfer, use non S/G values. 719 */ 720 ccb->scsiq.q1.data_addr = 0; 721 ccb->scsiq.q1.data_cnt = 0; 722 } 723 724 #ifdef ASC_DEBUG 725 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 726 sc_link->scsipi_scsi.target, 727 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 728 (unsigned long)ccb); 729 #endif 730 s = splbio(); 731 adv_queue_ccb(sc, ccb); 732 splx(s); 733 734 /* 735 * Usually return SUCCESSFULLY QUEUED 736 */ 737 if ((flags & SCSI_POLL) == 0) 738 return (SUCCESSFULLY_QUEUED); 739 740 /* 741 * If we can't use interrupts, poll on completion 742 */ 743 if (adv_poll(sc, xs, ccb->timeout)) { 744 adv_timeout(ccb); 745 if (adv_poll(sc, xs, ccb->timeout)) 746 adv_timeout(ccb); 747 } 748 return (COMPLETE); 749 } 750 751 752 int 753 adv_intr(arg) 754 void *arg; 755 { 756 ASC_SOFTC *sc = arg; 757 struct scsipi_xfer *xs; 758 759 #ifdef ASC_DEBUG 760 int int_pend = FALSE; 761 762 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 763 { 764 int_pend = TRUE; 765 printf("ISR - "); 766 } 767 #endif 768 AscISR(sc); 769 #ifdef ASC_DEBUG 770 if(int_pend) 771 printf("\n"); 772 #endif 773 774 /* 775 * If there are queue entries in the software queue, try to 776 * run the first one. We should be more or less guaranteed 777 * to succeed, since we just freed a CCB. 778 * 779 * NOTE: adv_scsi_cmd() relies on our calling it with 780 * the first entry in the queue. 781 */ 782 if ((xs = TAILQ_FIRST(&sc->sc_queue)) != NULL) 783 (void) adv_scsi_cmd(xs); 784 785 return (1); 786 } 787 788 789 /* 790 * Poll a particular unit, looking for a particular xs 791 */ 792 static int 793 adv_poll(sc, xs, count) 794 ASC_SOFTC *sc; 795 struct scsipi_xfer *xs; 796 int count; 797 { 798 799 /* timeouts are in msec, so we loop in 1000 usec cycles */ 800 while (count) { 801 adv_intr(sc); 802 if (xs->flags & ITSDONE) 803 return (0); 804 delay(1000); /* only happens in boot so ok */ 805 count--; 806 } 807 return (1); 808 } 809 810 811 static void 812 adv_timeout(arg) 813 void *arg; 814 { 815 ADV_CCB *ccb = arg; 816 struct scsipi_xfer *xs = ccb->xs; 817 struct scsipi_link *sc_link = xs->sc_link; 818 ASC_SOFTC *sc = sc_link->adapter_softc; 819 int s; 820 821 scsi_print_addr(sc_link); 822 printf("timed out"); 823 824 s = splbio(); 825 826 /* 827 * If it has been through before, then a previous abort has failed, 828 * don't try abort again, reset the bus instead. 829 */ 830 if (ccb->flags & CCB_ABORT) { 831 /* abort timed out */ 832 printf(" AGAIN. Resetting Bus\n"); 833 /* Lets try resetting the bus! */ 834 if (AscResetBus(sc) == ASC_ERROR) { 835 ccb->timeout = sc->scsi_reset_wait; 836 adv_queue_ccb(sc, ccb); 837 } 838 } else { 839 /* abort the operation that has timed out */ 840 printf("\n"); 841 AscAbortCCB(sc, ccb); 842 ccb->xs->error = XS_TIMEOUT; 843 ccb->timeout = ADV_ABORT_TIMEOUT; 844 ccb->flags |= CCB_ABORT; 845 adv_queue_ccb(sc, ccb); 846 } 847 848 splx(s); 849 } 850 851 852 static void 853 adv_watchdog(arg) 854 void *arg; 855 { 856 ADV_CCB *ccb = arg; 857 struct scsipi_xfer *xs = ccb->xs; 858 struct scsipi_link *sc_link = xs->sc_link; 859 ASC_SOFTC *sc = sc_link->adapter_softc; 860 int s; 861 862 s = splbio(); 863 864 ccb->flags &= ~CCB_WATCHDOG; 865 adv_start_ccbs(sc); 866 867 splx(s); 868 } 869 870 871 /******************************************************************************/ 872 /* NARROW boards Interrupt callbacks */ 873 /******************************************************************************/ 874 875 876 /* 877 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 878 * 879 * Interrupt callback function for the Narrow SCSI Asc Library. 880 */ 881 static void 882 adv_narrow_isr_callback(sc, qdonep) 883 ASC_SOFTC *sc; 884 ASC_QDONE_INFO *qdonep; 885 { 886 bus_dma_tag_t dmat = sc->sc_dmat; 887 ADV_CCB *ccb; 888 struct scsipi_xfer *xs; 889 struct scsipi_sense_data *s1, *s2; 890 891 892 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 893 xs = ccb->xs; 894 895 #ifdef ASC_DEBUG 896 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 897 (unsigned long)ccb, 898 xs->sc_link->scsipi_scsi.target, 899 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 900 #endif 901 untimeout(adv_timeout, ccb); 902 903 /* 904 * If we were a data transfer, unload the map that described 905 * the data buffer. 906 */ 907 if (xs->datalen) { 908 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 909 ccb->dmamap_xfer->dm_mapsize, 910 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 911 BUS_DMASYNC_POSTWRITE); 912 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 913 } 914 if ((ccb->flags & CCB_ALLOC) == 0) { 915 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 916 Debugger(); 917 return; 918 } 919 /* 920 * 'qdonep' contains the command's ending status. 921 */ 922 #ifdef ASC_DEBUG 923 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 924 #endif 925 switch (qdonep->d3.done_stat) { 926 case ASC_QD_NO_ERROR: 927 switch (qdonep->d3.host_stat) { 928 case ASC_QHSTA_NO_ERROR: 929 xs->error = XS_NOERROR; 930 xs->resid = 0; 931 break; 932 933 default: 934 /* QHSTA error occurred */ 935 xs->error = XS_DRIVER_STUFFUP; 936 break; 937 } 938 939 /* 940 * If an INQUIRY command completed successfully, then call 941 * the AscInquiryHandling() function to patch bugged boards. 942 */ 943 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 944 (xs->sc_link->scsipi_scsi.lun == 0) && 945 (xs->datalen - qdonep->remain_bytes) >= 8) { 946 AscInquiryHandling(sc, 947 xs->sc_link->scsipi_scsi.target & 0x7, 948 (ASC_SCSI_INQUIRY *) xs->data); 949 } 950 break; 951 952 case ASC_QD_WITH_ERROR: 953 switch (qdonep->d3.host_stat) { 954 case ASC_QHSTA_NO_ERROR: 955 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 956 s1 = &ccb->scsi_sense; 957 s2 = &xs->sense.scsi_sense; 958 *s2 = *s1; 959 xs->error = XS_SENSE; 960 } else { 961 xs->error = XS_DRIVER_STUFFUP; 962 } 963 break; 964 965 default: 966 /* QHSTA error occurred */ 967 xs->error = XS_DRIVER_STUFFUP; 968 break; 969 } 970 break; 971 972 case ASC_QD_ABORTED_BY_HOST: 973 default: 974 xs->error = XS_DRIVER_STUFFUP; 975 break; 976 } 977 978 979 adv_free_ccb(sc, ccb); 980 xs->flags |= ITSDONE; 981 scsipi_done(xs); 982 } 983
Indexes created Mon Sep 22 05:09:51 GMT 2025