adv.c revision 1.20
1 /* $NetBSD: adv.c,v 1.20 2000/11/14 18:21:00 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/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 <uvm/uvm_extern.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 PAGE_SIZE, 0, &seg, 1, &rseg, 128 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 callout_init(&ccb->ccb_watchdog); 239 240 /* 241 * Create the DMA map for this CCB. 242 */ 243 error = bus_dmamap_create(sc->sc_dmat, 244 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 245 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 246 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 247 if (error) { 248 printf("%s: unable to create DMA map, error = %d\n", 249 sc->sc_dev.dv_xname, error); 250 return (error); 251 } 252 253 /* 254 * put in the phystokv hash table 255 * Never gets taken out. 256 */ 257 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 258 ADV_CCB_OFF(ccb); 259 hashnum = CCB_HASH(ccb->hashkey); 260 ccb->nexthash = sc->sc_ccbhash[hashnum]; 261 sc->sc_ccbhash[hashnum] = ccb; 262 263 adv_reset_ccb(ccb); 264 return (0); 265 } 266 267 268 /* 269 * Get a free ccb 270 * 271 * If there are none, see if we can allocate a new one 272 */ 273 static ADV_CCB * 274 adv_get_ccb(sc, flags) 275 ASC_SOFTC *sc; 276 int flags; 277 { 278 ADV_CCB *ccb = 0; 279 int s; 280 281 s = splbio(); 282 283 /* 284 * If we can and have to, sleep waiting for one to come free 285 * but only if we can't allocate a new one. 286 */ 287 for (;;) { 288 ccb = sc->sc_free_ccb.tqh_first; 289 if (ccb) { 290 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 291 break; 292 } 293 if ((flags & XS_CTL_NOSLEEP) != 0) 294 goto out; 295 296 tsleep(&sc->sc_free_ccb, PRIBIO, "advccb", 0); 297 } 298 299 ccb->flags |= CCB_ALLOC; 300 301 out: 302 splx(s); 303 return (ccb); 304 } 305 306 307 /* 308 * Given a physical address, find the ccb that it corresponds to. 309 */ 310 ADV_CCB * 311 adv_ccb_phys_kv(sc, ccb_phys) 312 ASC_SOFTC *sc; 313 u_long ccb_phys; 314 { 315 int hashnum = CCB_HASH(ccb_phys); 316 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 317 318 while (ccb) { 319 if (ccb->hashkey == ccb_phys) 320 break; 321 ccb = ccb->nexthash; 322 } 323 return (ccb); 324 } 325 326 327 /* 328 * Queue a CCB to be sent to the controller, and send it if possible. 329 */ 330 static void 331 adv_queue_ccb(sc, ccb) 332 ASC_SOFTC *sc; 333 ADV_CCB *ccb; 334 { 335 336 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 337 338 adv_start_ccbs(sc); 339 } 340 341 342 static void 343 adv_start_ccbs(sc) 344 ASC_SOFTC *sc; 345 { 346 ADV_CCB *ccb; 347 348 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 349 if (ccb->flags & CCB_WATCHDOG) 350 callout_stop(&ccb->ccb_watchdog); 351 352 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 353 ccb->flags |= CCB_WATCHDOG; 354 callout_reset(&ccb->ccb_watchdog, 355 (ADV_WATCH_TIMEOUT * hz) / 1000, 356 adv_watchdog, ccb); 357 break; 358 } 359 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 360 361 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 362 callout_reset(&ccb->xs->xs_callout, 363 (ccb->timeout * hz) / 1000, 364 adv_timeout, ccb); 365 } 366 } 367 368 369 /******************************************************************************/ 370 /* SCSI layer interfacing routines */ 371 /******************************************************************************/ 372 373 374 int 375 adv_init(sc) 376 ASC_SOFTC *sc; 377 { 378 int warn; 379 380 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 381 printf("adv_init: failed to find signature\n"); 382 return (1); 383 } 384 385 /* 386 * Read the board configuration 387 */ 388 AscInitASC_SOFTC(sc); 389 warn = AscInitFromEEP(sc); 390 if (warn) { 391 printf("%s -get: ", sc->sc_dev.dv_xname); 392 switch (warn) { 393 case -1: 394 printf("Chip is not halted\n"); 395 break; 396 397 case -2: 398 printf("Couldn't get MicroCode Start" 399 " address\n"); 400 break; 401 402 case ASC_WARN_IO_PORT_ROTATE: 403 printf("I/O port address modified\n"); 404 break; 405 406 case ASC_WARN_AUTO_CONFIG: 407 printf("I/O port increment switch enabled\n"); 408 break; 409 410 case ASC_WARN_EEPROM_CHKSUM: 411 printf("EEPROM checksum error\n"); 412 break; 413 414 case ASC_WARN_IRQ_MODIFIED: 415 printf("IRQ modified\n"); 416 break; 417 418 case ASC_WARN_CMD_QNG_CONFLICT: 419 printf("tag queuing enabled w/o disconnects\n"); 420 break; 421 422 default: 423 printf("unknown warning %d\n", warn); 424 } 425 } 426 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 427 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 428 429 /* 430 * Modify the board configuration 431 */ 432 warn = AscInitFromASC_SOFTC(sc); 433 if (warn) { 434 printf("%s -set: ", sc->sc_dev.dv_xname); 435 switch (warn) { 436 case ASC_WARN_CMD_QNG_CONFLICT: 437 printf("tag queuing enabled w/o disconnects\n"); 438 break; 439 440 case ASC_WARN_AUTO_CONFIG: 441 printf("I/O port increment switch enabled\n"); 442 break; 443 444 default: 445 printf("unknown warning %d\n", warn); 446 } 447 } 448 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 449 450 return (0); 451 } 452 453 454 void 455 adv_attach(sc) 456 ASC_SOFTC *sc; 457 { 458 int i, error; 459 460 /* 461 * Initialize board RISC chip and enable interrupts. 462 */ 463 switch (AscInitDriver(sc)) { 464 case 0: 465 /* AllOK */ 466 break; 467 468 case 1: 469 panic("%s: bad signature", sc->sc_dev.dv_xname); 470 break; 471 472 case 2: 473 panic("%s: unable to load MicroCode", 474 sc->sc_dev.dv_xname); 475 break; 476 477 case 3: 478 panic("%s: unable to initialize MicroCode", 479 sc->sc_dev.dv_xname); 480 break; 481 482 default: 483 panic("%s: unable to initialize board RISC chip", 484 sc->sc_dev.dv_xname); 485 } 486 487 /* 488 * Fill in the adapter. 489 */ 490 sc->sc_adapter.scsipi_cmd = adv_scsi_cmd; 491 sc->sc_adapter.scsipi_minphys = advminphys; 492 493 /* 494 * fill in the prototype scsipi_link. 495 */ 496 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 497 sc->sc_link.adapter_softc = sc; 498 sc->sc_link.scsipi_scsi.adapter_target = sc->chip_scsi_id; 499 sc->sc_link.adapter = &sc->sc_adapter; 500 sc->sc_link.device = &adv_dev; 501 sc->sc_link.openings = 4; 502 sc->sc_link.scsipi_scsi.max_target = 7; 503 sc->sc_link.scsipi_scsi.max_lun = 7; 504 sc->sc_link.type = BUS_SCSI; 505 506 507 TAILQ_INIT(&sc->sc_free_ccb); 508 TAILQ_INIT(&sc->sc_waiting_ccb); 509 TAILQ_INIT(&sc->sc_queue); 510 511 512 /* 513 * Allocate the Control Blocks and the overrun buffer. 514 */ 515 error = adv_alloc_control_data(sc); 516 if (error) 517 return; /* (error) */ 518 519 /* 520 * Create and initialize the Control Blocks. 521 */ 522 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 523 if (i == 0) { 524 printf("%s: unable to create control blocks\n", 525 sc->sc_dev.dv_xname); 526 return; /* (ENOMEM) */ ; 527 } else if (i != ADV_MAX_CCB) { 528 printf("%s: WARNING: only %d of %d control blocks created\n", 529 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 530 } 531 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 532 } 533 534 535 static void 536 advminphys(bp) 537 struct buf *bp; 538 { 539 540 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 541 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 542 minphys(bp); 543 } 544 545 546 /* 547 * start a scsi operation given the command and the data address. Also needs 548 * the unit, target and lu. 549 */ 550 static int 551 adv_scsi_cmd(xs) 552 struct scsipi_xfer *xs; 553 { 554 struct scsipi_link *sc_link = xs->sc_link; 555 ASC_SOFTC *sc = sc_link->adapter_softc; 556 bus_dma_tag_t dmat = sc->sc_dmat; 557 ADV_CCB *ccb; 558 int s, flags, error, nsegs; 559 int fromqueue = 0, dontqueue = 0, nowait = 0; 560 561 562 s = splbio(); /* protect the queue */ 563 564 /* 565 * If we're running the queue from adv_done(), we've been 566 * called with the first queue entry as our argument. 567 */ 568 if (xs == TAILQ_FIRST(&sc->sc_queue)) { 569 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 570 fromqueue = 1; 571 nowait = 1; 572 } else { 573 574 /* Polled requests can't be queued for later. */ 575 dontqueue = xs->xs_control & XS_CTL_POLL; 576 577 /* 578 * If there are jobs in the queue, run them first. 579 */ 580 if (TAILQ_FIRST(&sc->sc_queue) != NULL) { 581 /* 582 * If we can't queue, we have to abort, since 583 * we have to preserve order. 584 */ 585 if (dontqueue) { 586 splx(s); 587 xs->error = XS_DRIVER_STUFFUP; 588 return (TRY_AGAIN_LATER); 589 } 590 /* 591 * Swap with the first queue entry. 592 */ 593 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 594 xs = TAILQ_FIRST(&sc->sc_queue); 595 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 596 fromqueue = 1; 597 } 598 } 599 600 601 /* 602 * get a ccb to use. If the transfer 603 * is from a buf (possibly from interrupt time) 604 * then we can't allow it to sleep 605 */ 606 607 flags = xs->xs_control; 608 if (nowait) 609 flags |= XS_CTL_NOSLEEP; 610 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 611 /* 612 * If we can't queue, we lose. 613 */ 614 if (dontqueue) { 615 splx(s); 616 xs->error = XS_DRIVER_STUFFUP; 617 return (TRY_AGAIN_LATER); 618 } 619 /* 620 * Stuff ourselves into the queue, in front 621 * if we came off in the first place. 622 */ 623 if (fromqueue) 624 TAILQ_INSERT_HEAD(&sc->sc_queue, xs, adapter_q); 625 else 626 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 627 splx(s); 628 return (SUCCESSFULLY_QUEUED); 629 } 630 splx(s); /* done playing with the queue */ 631 632 ccb->xs = xs; 633 ccb->timeout = xs->timeout; 634 635 /* 636 * Build up the request 637 */ 638 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 639 640 ccb->scsiq.q2.ccb_ptr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 641 ADV_CCB_OFF(ccb); 642 643 ccb->scsiq.cdbptr = &xs->cmd->opcode; 644 ccb->scsiq.q2.cdb_len = xs->cmdlen; 645 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 646 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 647 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 648 sc_link->scsipi_scsi.lun); 649 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 650 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 651 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 652 653 /* 654 * If there are any outstanding requests for the current target, 655 * then every 255th request send an ORDERED request. This heuristic 656 * tries to retain the benefit of request sorting while preventing 657 * request starvation. 255 is the max number of tags or pending commands 658 * a device may have outstanding. 659 */ 660 sc->reqcnt[sc_link->scsipi_scsi.target]++; 661 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 662 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 663 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 664 } else { 665 if((xs->bp != NULL) && xs->bp->b_flags & B_ASYNC) 666 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 667 else 668 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 669 } 670 671 672 if (xs->datalen) { 673 /* 674 * Map the DMA transfer. 675 */ 676 #ifdef TFS 677 if (flags & SCSI_DATA_UIO) { 678 error = bus_dmamap_load_uio(dmat, 679 ccb->dmamap_xfer, (struct uio *) xs->data, 680 (flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 681 } else 682 #endif /* TFS */ 683 { 684 error = bus_dmamap_load(dmat, 685 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 686 (flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 687 } 688 689 if (error) { 690 if (error == EFBIG) { 691 printf("%s: adv_scsi_cmd, more than %d dma" 692 " segments\n", 693 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 694 } else { 695 printf("%s: adv_scsi_cmd, error %d loading" 696 " dma map\n", 697 sc->sc_dev.dv_xname, error); 698 } 699 700 xs->error = XS_DRIVER_STUFFUP; 701 adv_free_ccb(sc, ccb); 702 return (COMPLETE); 703 } 704 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 705 ccb->dmamap_xfer->dm_mapsize, 706 (flags & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : 707 BUS_DMASYNC_PREWRITE); 708 709 710 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 711 712 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 713 714 ccb->sghead.sg_list[nsegs].addr = 715 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 716 ccb->sghead.sg_list[nsegs].bytes = 717 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 718 } 719 720 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 721 ccb->dmamap_xfer->dm_nsegs; 722 723 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 724 ccb->scsiq.sg_head = &ccb->sghead; 725 ccb->scsiq.q1.data_addr = 0; 726 ccb->scsiq.q1.data_cnt = 0; 727 } else { 728 /* 729 * No data xfer, use non S/G values. 730 */ 731 ccb->scsiq.q1.data_addr = 0; 732 ccb->scsiq.q1.data_cnt = 0; 733 } 734 735 #ifdef ASC_DEBUG 736 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 737 sc_link->scsipi_scsi.target, 738 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 739 (unsigned long)ccb); 740 #endif 741 s = splbio(); 742 adv_queue_ccb(sc, ccb); 743 splx(s); 744 745 /* 746 * Usually return SUCCESSFULLY QUEUED 747 */ 748 if ((flags & XS_CTL_POLL) == 0) 749 return (SUCCESSFULLY_QUEUED); 750 751 /* 752 * If we can't use interrupts, poll on completion 753 */ 754 if (adv_poll(sc, xs, ccb->timeout)) { 755 adv_timeout(ccb); 756 if (adv_poll(sc, xs, ccb->timeout)) 757 adv_timeout(ccb); 758 } 759 return (COMPLETE); 760 } 761 762 763 int 764 adv_intr(arg) 765 void *arg; 766 { 767 ASC_SOFTC *sc = arg; 768 struct scsipi_xfer *xs; 769 770 #ifdef ASC_DEBUG 771 int int_pend = FALSE; 772 773 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 774 { 775 int_pend = TRUE; 776 printf("ISR - "); 777 } 778 #endif 779 AscISR(sc); 780 #ifdef ASC_DEBUG 781 if(int_pend) 782 printf("\n"); 783 #endif 784 785 /* 786 * If there are queue entries in the software queue, try to 787 * run the first one. We should be more or less guaranteed 788 * to succeed, since we just freed a CCB. 789 * 790 * NOTE: adv_scsi_cmd() relies on our calling it with 791 * the first entry in the queue. 792 */ 793 if ((xs = TAILQ_FIRST(&sc->sc_queue)) != NULL) 794 (void) adv_scsi_cmd(xs); 795 796 return (1); 797 } 798 799 800 /* 801 * Poll a particular unit, looking for a particular xs 802 */ 803 static int 804 adv_poll(sc, xs, count) 805 ASC_SOFTC *sc; 806 struct scsipi_xfer *xs; 807 int count; 808 { 809 810 /* timeouts are in msec, so we loop in 1000 usec cycles */ 811 while (count) { 812 adv_intr(sc); 813 if (xs->xs_status & XS_STS_DONE) 814 return (0); 815 delay(1000); /* only happens in boot so ok */ 816 count--; 817 } 818 return (1); 819 } 820 821 822 static void 823 adv_timeout(arg) 824 void *arg; 825 { 826 ADV_CCB *ccb = arg; 827 struct scsipi_xfer *xs = ccb->xs; 828 struct scsipi_link *sc_link = xs->sc_link; 829 ASC_SOFTC *sc = sc_link->adapter_softc; 830 int s; 831 832 scsi_print_addr(sc_link); 833 printf("timed out"); 834 835 s = splbio(); 836 837 /* 838 * If it has been through before, then a previous abort has failed, 839 * don't try abort again, reset the bus instead. 840 */ 841 if (ccb->flags & CCB_ABORT) { 842 /* abort timed out */ 843 printf(" AGAIN. Resetting Bus\n"); 844 /* Lets try resetting the bus! */ 845 if (AscResetBus(sc) == ASC_ERROR) { 846 ccb->timeout = sc->scsi_reset_wait; 847 adv_queue_ccb(sc, ccb); 848 } 849 } else { 850 /* abort the operation that has timed out */ 851 printf("\n"); 852 AscAbortCCB(sc, ccb); 853 ccb->xs->error = XS_TIMEOUT; 854 ccb->timeout = ADV_ABORT_TIMEOUT; 855 ccb->flags |= CCB_ABORT; 856 adv_queue_ccb(sc, ccb); 857 } 858 859 splx(s); 860 } 861 862 863 static void 864 adv_watchdog(arg) 865 void *arg; 866 { 867 ADV_CCB *ccb = arg; 868 struct scsipi_xfer *xs = ccb->xs; 869 struct scsipi_link *sc_link = xs->sc_link; 870 ASC_SOFTC *sc = sc_link->adapter_softc; 871 int s; 872 873 s = splbio(); 874 875 ccb->flags &= ~CCB_WATCHDOG; 876 adv_start_ccbs(sc); 877 878 splx(s); 879 } 880 881 882 /******************************************************************************/ 883 /* NARROW boards Interrupt callbacks */ 884 /******************************************************************************/ 885 886 887 /* 888 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 889 * 890 * Interrupt callback function for the Narrow SCSI Asc Library. 891 */ 892 static void 893 adv_narrow_isr_callback(sc, qdonep) 894 ASC_SOFTC *sc; 895 ASC_QDONE_INFO *qdonep; 896 { 897 bus_dma_tag_t dmat = sc->sc_dmat; 898 ADV_CCB *ccb; 899 struct scsipi_xfer *xs; 900 struct scsipi_sense_data *s1, *s2; 901 902 903 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 904 xs = ccb->xs; 905 906 #ifdef ASC_DEBUG 907 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 908 (unsigned long)ccb, 909 xs->sc_link->scsipi_scsi.target, 910 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 911 #endif 912 callout_stop(&ccb->xs->xs_callout); 913 914 /* 915 * If we were a data transfer, unload the map that described 916 * the data buffer. 917 */ 918 if (xs->datalen) { 919 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 920 ccb->dmamap_xfer->dm_mapsize, 921 (xs->xs_control & XS_CTL_DATA_IN) ? 922 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 923 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 924 } 925 if ((ccb->flags & CCB_ALLOC) == 0) { 926 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 927 Debugger(); 928 return; 929 } 930 /* 931 * 'qdonep' contains the command's ending status. 932 */ 933 #ifdef ASC_DEBUG 934 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 935 #endif 936 switch (qdonep->d3.done_stat) { 937 case ASC_QD_NO_ERROR: 938 switch (qdonep->d3.host_stat) { 939 case ASC_QHSTA_NO_ERROR: 940 xs->error = XS_NOERROR; 941 xs->resid = 0; 942 break; 943 944 default: 945 /* QHSTA error occurred */ 946 xs->error = XS_DRIVER_STUFFUP; 947 break; 948 } 949 950 /* 951 * If an INQUIRY command completed successfully, then call 952 * the AscInquiryHandling() function to patch bugged boards. 953 */ 954 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 955 (xs->sc_link->scsipi_scsi.lun == 0) && 956 (xs->datalen - qdonep->remain_bytes) >= 8) { 957 AscInquiryHandling(sc, 958 xs->sc_link->scsipi_scsi.target & 0x7, 959 (ASC_SCSI_INQUIRY *) xs->data); 960 } 961 break; 962 963 case ASC_QD_WITH_ERROR: 964 switch (qdonep->d3.host_stat) { 965 case ASC_QHSTA_NO_ERROR: 966 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 967 s1 = &ccb->scsi_sense; 968 s2 = &xs->sense.scsi_sense; 969 *s2 = *s1; 970 xs->error = XS_SENSE; 971 } else { 972 xs->error = XS_DRIVER_STUFFUP; 973 } 974 break; 975 976 default: 977 /* QHSTA error occurred */ 978 xs->error = XS_DRIVER_STUFFUP; 979 break; 980 } 981 break; 982 983 case ASC_QD_ABORTED_BY_HOST: 984 default: 985 xs->error = XS_DRIVER_STUFFUP; 986 break; 987 } 988 989 990 adv_free_ccb(sc, ccb); 991 xs->xs_status |= XS_STS_DONE; 992 scsipi_done(xs); 993 } 994
Indexes created Tue Sep 23 07:09:52 GMT 2025