adv.c revision 1.7
1 /* $NetBSD: adv.c,v 1.7 1998/11/19 21:52:58 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/adv.h> 64 #include <dev/ic/advlib.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 void adv_enqueue __P((ASC_SOFTC *, struct scsipi_xfer *, int)); 77 static struct scsipi_xfer *adv_dequeue __P((ASC_SOFTC *)); 78 79 static int adv_alloc_ccbs __P((ASC_SOFTC *)); 80 static int adv_create_ccbs __P((ASC_SOFTC *, ADV_CCB *, int)); 81 static void adv_free_ccb __P((ASC_SOFTC *, ADV_CCB *)); 82 static void adv_reset_ccb __P((ADV_CCB *)); 83 static int adv_init_ccb __P((ASC_SOFTC *, ADV_CCB *)); 84 static ADV_CCB *adv_get_ccb __P((ASC_SOFTC *, int)); 85 static void adv_queue_ccb __P((ASC_SOFTC *, ADV_CCB *)); 86 static void adv_start_ccbs __P((ASC_SOFTC *)); 87 88 static u_int8_t *adv_alloc_overrunbuf __P((char *dvname, bus_dma_tag_t)); 89 90 static int adv_scsi_cmd __P((struct scsipi_xfer *)); 91 static void advminphys __P((struct buf *)); 92 static void adv_narrow_isr_callback __P((ASC_SOFTC *, ASC_QDONE_INFO *)); 93 94 static int adv_poll __P((ASC_SOFTC *, struct scsipi_xfer *, int)); 95 static void adv_timeout __P((void *)); 96 static void adv_watchdog __P((void *)); 97 98 99 /******************************************************************************/ 100 101 102 /* the below structure is so we have a default dev struct for out link struct */ 103 struct scsipi_device adv_dev = 104 { 105 NULL, /* Use default error handler */ 106 NULL, /* have a queue, served by this */ 107 NULL, /* have no async handler */ 108 NULL, /* Use default 'done' routine */ 109 }; 110 111 112 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 113 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 114 115 116 /******************************************************************************/ 117 /* scsipi_xfer queue routines */ 118 /******************************************************************************/ 119 120 121 /* 122 * Insert a scsipi_xfer into the software queue. We overload xs->free_list 123 * to avoid having to allocate additional resources (since we're used 124 * only during resource shortages anyhow. 125 */ 126 static void 127 adv_enqueue(sc, xs, infront) 128 ASC_SOFTC *sc; 129 struct scsipi_xfer *xs; 130 int infront; 131 { 132 133 if (infront || sc->sc_queue.lh_first == NULL) { 134 if (sc->sc_queue.lh_first == NULL) 135 sc->sc_queuelast = xs; 136 LIST_INSERT_HEAD(&sc->sc_queue, xs, free_list); 137 return; 138 } 139 LIST_INSERT_AFTER(sc->sc_queuelast, xs, free_list); 140 sc->sc_queuelast = xs; 141 } 142 143 144 /* 145 * Pull a scsipi_xfer off the front of the software queue. 146 */ 147 static struct scsipi_xfer * 148 adv_dequeue(sc) 149 ASC_SOFTC *sc; 150 { 151 struct scsipi_xfer *xs; 152 153 xs = sc->sc_queue.lh_first; 154 LIST_REMOVE(xs, free_list); 155 156 if (sc->sc_queue.lh_first == NULL) 157 sc->sc_queuelast = NULL; 158 159 return (xs); 160 } 161 162 163 /******************************************************************************/ 164 /* Control Blocks routines */ 165 /******************************************************************************/ 166 167 168 static int 169 adv_alloc_ccbs(sc) 170 ASC_SOFTC *sc; 171 { 172 bus_dma_segment_t seg; 173 int error, rseg; 174 175 /* 176 * Allocate the control blocks. 177 */ 178 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 179 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 180 printf("%s: unable to allocate control structures," 181 " error = %d\n", sc->sc_dev.dv_xname, error); 182 return (error); 183 } 184 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 185 sizeof(struct adv_control), (caddr_t *) & sc->sc_control, 186 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 187 printf("%s: unable to map control structures, error = %d\n", 188 sc->sc_dev.dv_xname, error); 189 return (error); 190 } 191 /* 192 * Create and load the DMA map used for the control blocks. 193 */ 194 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 195 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 196 &sc->sc_dmamap_control)) != 0) { 197 printf("%s: unable to create control DMA map, error = %d\n", 198 sc->sc_dev.dv_xname, error); 199 return (error); 200 } 201 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 202 sc->sc_control, sizeof(struct adv_control), NULL, 203 BUS_DMA_NOWAIT)) != 0) { 204 printf("%s: unable to load control DMA map, error = %d\n", 205 sc->sc_dev.dv_xname, error); 206 return (error); 207 } 208 return (0); 209 } 210 211 212 /* 213 * Create a set of ccbs and add them to the free list. Called once 214 * by adv_init(). We return the number of CCBs successfully created. 215 */ 216 static int 217 adv_create_ccbs(sc, ccbstore, count) 218 ASC_SOFTC *sc; 219 ADV_CCB *ccbstore; 220 int count; 221 { 222 ADV_CCB *ccb; 223 int i, error; 224 225 bzero(ccbstore, sizeof(ADV_CCB) * count); 226 for (i = 0; i < count; i++) { 227 ccb = &ccbstore[i]; 228 if ((error = adv_init_ccb(sc, ccb)) != 0) { 229 printf("%s: unable to initialize ccb, error = %d\n", 230 sc->sc_dev.dv_xname, error); 231 return (i); 232 } 233 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 234 } 235 236 return (i); 237 } 238 239 240 /* 241 * A ccb is put onto the free list. 242 */ 243 static void 244 adv_free_ccb(sc, ccb) 245 ASC_SOFTC *sc; 246 ADV_CCB *ccb; 247 { 248 int s; 249 250 s = splbio(); 251 252 adv_reset_ccb(ccb); 253 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 254 255 /* 256 * If there were none, wake anybody waiting for one to come free, 257 * starting with queued entries. 258 */ 259 if (ccb->chain.tqe_next == 0) 260 wakeup(&sc->sc_free_ccb); 261 262 splx(s); 263 } 264 265 266 static void 267 adv_reset_ccb(ccb) 268 ADV_CCB *ccb; 269 { 270 271 ccb->flags = 0; 272 } 273 274 275 static int 276 adv_init_ccb(sc, ccb) 277 ASC_SOFTC *sc; 278 ADV_CCB *ccb; 279 { 280 int error; 281 282 /* 283 * Create the DMA map for this CCB. 284 */ 285 error = bus_dmamap_create(sc->sc_dmat, 286 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 287 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 288 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 289 if (error) { 290 printf("%s: unable to create DMA map, error = %d\n", 291 sc->sc_dev.dv_xname, error); 292 return (error); 293 } 294 adv_reset_ccb(ccb); 295 return (0); 296 } 297 298 299 /* 300 * Get a free ccb 301 * 302 * If there are none, see if we can allocate a new one 303 */ 304 static ADV_CCB * 305 adv_get_ccb(sc, flags) 306 ASC_SOFTC *sc; 307 int flags; 308 { 309 ADV_CCB *ccb = 0; 310 int s; 311 312 s = splbio(); 313 314 /* 315 * If we can and have to, sleep waiting for one to come free 316 * but only if we can't allocate a new one. 317 */ 318 for (;;) { 319 ccb = sc->sc_free_ccb.tqh_first; 320 if (ccb) { 321 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 322 break; 323 } 324 if ((flags & SCSI_NOSLEEP) != 0) 325 goto out; 326 327 tsleep(&sc->sc_free_ccb, PRIBIO, "advccb", 0); 328 } 329 330 ccb->flags |= CCB_ALLOC; 331 332 out: 333 splx(s); 334 return (ccb); 335 } 336 337 338 /* 339 * Queue a CCB to be sent to the controller, and send it if possible. 340 */ 341 static void 342 adv_queue_ccb(sc, ccb) 343 ASC_SOFTC *sc; 344 ADV_CCB *ccb; 345 { 346 347 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 348 349 adv_start_ccbs(sc); 350 } 351 352 353 static void 354 adv_start_ccbs(sc) 355 ASC_SOFTC *sc; 356 { 357 ADV_CCB *ccb; 358 359 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 360 if (ccb->flags & CCB_WATCHDOG) 361 untimeout(adv_watchdog, ccb); 362 363 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 364 ccb->flags |= CCB_WATCHDOG; 365 timeout(adv_watchdog, ccb, 366 (ADV_WATCH_TIMEOUT * hz) / 1000); 367 break; 368 } 369 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 370 371 if ((ccb->xs->flags & SCSI_POLL) == 0) 372 timeout(adv_timeout, ccb, (ccb->timeout * hz) / 1000); 373 } 374 } 375 376 377 /******************************************************************************/ 378 /* DMA able memory allocation routines */ 379 /******************************************************************************/ 380 381 382 /* 383 * Allocate a DMA able memory for overrun_buffer. 384 * This memory can be safely shared among all the AdvanSys boards. 385 */ 386 u_int8_t * 387 adv_alloc_overrunbuf(dvname, dmat) 388 char *dvname; 389 bus_dma_tag_t dmat; 390 { 391 static u_int8_t *overrunbuf = NULL; 392 393 bus_dmamap_t ovrbuf_dmamap; 394 bus_dma_segment_t seg; 395 int rseg, error; 396 397 398 /* 399 * if an overrun buffer has been already allocated don't allocate it 400 * again. Instead return the address of the allocated buffer. 401 */ 402 if (overrunbuf) 403 return (overrunbuf); 404 405 406 if ((error = bus_dmamem_alloc(dmat, ASC_OVERRUN_BSIZE, 407 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 408 printf("%s: unable to allocate overrun buffer, error = %d\n", 409 dvname, error); 410 return (0); 411 } 412 if ((error = bus_dmamem_map(dmat, &seg, rseg, ASC_OVERRUN_BSIZE, 413 (caddr_t *) & overrunbuf, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 414 printf("%s: unable to map overrun buffer, error = %d\n", 415 dvname, error); 416 417 bus_dmamem_free(dmat, &seg, 1); 418 return (0); 419 } 420 if ((error = bus_dmamap_create(dmat, ASC_OVERRUN_BSIZE, 1, 421 ASC_OVERRUN_BSIZE, 0, BUS_DMA_NOWAIT, &ovrbuf_dmamap)) != 0) { 422 printf("%s: unable to create overrun buffer DMA map," 423 " error = %d\n", dvname, error); 424 425 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 426 bus_dmamem_free(dmat, &seg, 1); 427 return (0); 428 } 429 if ((error = bus_dmamap_load(dmat, ovrbuf_dmamap, overrunbuf, 430 ASC_OVERRUN_BSIZE, NULL, BUS_DMA_NOWAIT)) != 0) { 431 printf("%s: unable to load overrun buffer DMA map," 432 " error = %d\n", dvname, error); 433 434 bus_dmamap_destroy(dmat, ovrbuf_dmamap); 435 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 436 bus_dmamem_free(dmat, &seg, 1); 437 return (0); 438 } 439 return (overrunbuf); 440 } 441 442 443 /******************************************************************************/ 444 /* SCSI layer interfacing routines */ 445 /******************************************************************************/ 446 447 448 int 449 adv_init(sc) 450 ASC_SOFTC *sc; 451 { 452 int warn; 453 454 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) 455 panic("adv_init: adv_find_signature failed"); 456 457 /* 458 * Read the board configuration 459 */ 460 AscInitASC_SOFTC(sc); 461 warn = AscInitFromEEP(sc); 462 if (warn) { 463 printf("%s -get: ", sc->sc_dev.dv_xname); 464 switch (warn) { 465 case -1: 466 printf("Chip is not halted\n"); 467 break; 468 469 case -2: 470 printf("Couldn't get MicroCode Start" 471 " address\n"); 472 break; 473 474 case ASC_WARN_IO_PORT_ROTATE: 475 printf("I/O port address modified\n"); 476 break; 477 478 case ASC_WARN_AUTO_CONFIG: 479 printf("I/O port increment switch enabled\n"); 480 break; 481 482 case ASC_WARN_EEPROM_CHKSUM: 483 printf("EEPROM checksum error\n"); 484 break; 485 486 case ASC_WARN_IRQ_MODIFIED: 487 printf("IRQ modified\n"); 488 break; 489 490 case ASC_WARN_CMD_QNG_CONFLICT: 491 printf("tag queuing enabled w/o disconnects\n"); 492 break; 493 494 default: 495 printf("unknown warning %d\n", warn); 496 } 497 } 498 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 499 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 500 501 /* 502 * Modify the board configuration 503 */ 504 warn = AscInitFromASC_SOFTC(sc); 505 if (warn) { 506 printf("%s -set: ", sc->sc_dev.dv_xname); 507 switch (warn) { 508 case ASC_WARN_CMD_QNG_CONFLICT: 509 printf("tag queuing enabled w/o disconnects\n"); 510 break; 511 512 case ASC_WARN_AUTO_CONFIG: 513 printf("I/O port increment switch enabled\n"); 514 break; 515 516 default: 517 printf("unknown warning %d\n", warn); 518 } 519 } 520 sc->isr_callback = (ulong) adv_narrow_isr_callback; 521 522 if (!(sc->overrun_buf = adv_alloc_overrunbuf(sc->sc_dev.dv_xname, 523 sc->sc_dmat))) { 524 return (1); 525 } 526 527 return (0); 528 } 529 530 531 void 532 adv_attach(sc) 533 ASC_SOFTC *sc; 534 { 535 int i, error; 536 537 /* 538 * Initialize board RISC chip and enable interrupts. 539 */ 540 switch (AscInitDriver(sc)) { 541 case 0: 542 /* AllOK */ 543 break; 544 545 case 1: 546 panic("%s: bad signature", sc->sc_dev.dv_xname); 547 break; 548 549 case 2: 550 panic("%s: unable to load MicroCode", 551 sc->sc_dev.dv_xname); 552 break; 553 554 case 3: 555 panic("%s: unable to initialize MicroCode", 556 sc->sc_dev.dv_xname); 557 break; 558 559 default: 560 panic("%s: unable to initialize board RISC chip", 561 sc->sc_dev.dv_xname); 562 } 563 564 /* 565 * Fill in the adapter. 566 */ 567 sc->sc_adapter.scsipi_cmd = adv_scsi_cmd; 568 sc->sc_adapter.scsipi_minphys = advminphys; 569 570 /* 571 * fill in the prototype scsipi_link. 572 */ 573 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 574 sc->sc_link.adapter_softc = sc; 575 sc->sc_link.scsipi_scsi.adapter_target = sc->chip_scsi_id; 576 sc->sc_link.adapter = &sc->sc_adapter; 577 sc->sc_link.device = &adv_dev; 578 sc->sc_link.openings = 4; 579 sc->sc_link.scsipi_scsi.max_target = 7; 580 sc->sc_link.type = BUS_SCSI; 581 582 583 TAILQ_INIT(&sc->sc_free_ccb); 584 TAILQ_INIT(&sc->sc_waiting_ccb); 585 LIST_INIT(&sc->sc_queue); 586 587 588 /* 589 * Allocate the Control Blocks. 590 */ 591 error = adv_alloc_ccbs(sc); 592 if (error) 593 return; /* (error) */ ; 594 595 /* 596 * Create and initialize the Control Blocks. 597 */ 598 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 599 if (i == 0) { 600 printf("%s: unable to create control blocks\n", 601 sc->sc_dev.dv_xname); 602 return; /* (ENOMEM) */ ; 603 } else if (i != ADV_MAX_CCB) { 604 printf("%s: WARNING: only %d of %d control blocks created\n", 605 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 606 } 607 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 608 } 609 610 611 static void 612 advminphys(bp) 613 struct buf *bp; 614 { 615 616 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 617 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 618 minphys(bp); 619 } 620 621 622 /* 623 * start a scsi operation given the command and the data address. Also needs 624 * the unit, target and lu. 625 */ 626 static int 627 adv_scsi_cmd(xs) 628 struct scsipi_xfer *xs; 629 { 630 struct scsipi_link *sc_link = xs->sc_link; 631 ASC_SOFTC *sc = sc_link->adapter_softc; 632 bus_dma_tag_t dmat = sc->sc_dmat; 633 ADV_CCB *ccb; 634 int s, flags, error, nsegs; 635 int fromqueue = 1, dontqueue = 0; 636 637 638 s = splbio(); /* protect the queue */ 639 640 /* 641 * If we're running the queue from adv_done(), we've been 642 * called with the first queue entry as our argument. 643 */ 644 if (xs == sc->sc_queue.lh_first) { 645 xs = adv_dequeue(sc); 646 fromqueue = 1; 647 } else { 648 649 /* Polled requests can't be queued for later. */ 650 dontqueue = xs->flags & SCSI_POLL; 651 652 /* 653 * If there are jobs in the queue, run them first. 654 */ 655 if (sc->sc_queue.lh_first != NULL) { 656 /* 657 * If we can't queue, we have to abort, since 658 * we have to preserve order. 659 */ 660 if (dontqueue) { 661 splx(s); 662 xs->error = XS_DRIVER_STUFFUP; 663 return (TRY_AGAIN_LATER); 664 } 665 /* 666 * Swap with the first queue entry. 667 */ 668 adv_enqueue(sc, xs, 0); 669 xs = adv_dequeue(sc); 670 fromqueue = 1; 671 } 672 } 673 674 675 /* 676 * get a ccb to use. If the transfer 677 * is from a buf (possibly from interrupt time) 678 * then we can't allow it to sleep 679 */ 680 681 flags = xs->flags; 682 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 683 /* 684 * If we can't queue, we lose. 685 */ 686 if (dontqueue) { 687 splx(s); 688 xs->error = XS_DRIVER_STUFFUP; 689 return (TRY_AGAIN_LATER); 690 } 691 /* 692 * Stuff ourselves into the queue, in front 693 * if we came off in the first place. 694 */ 695 adv_enqueue(sc, xs, fromqueue); 696 splx(s); 697 return (SUCCESSFULLY_QUEUED); 698 } 699 splx(s); /* done playing with the queue */ 700 701 ccb->xs = xs; 702 ccb->timeout = xs->timeout; 703 704 /* 705 * Build up the request 706 */ 707 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 708 709 ccb->scsiq.q2.ccb_ptr = (ulong) ccb; 710 711 ccb->scsiq.cdbptr = &xs->cmd->opcode; 712 ccb->scsiq.q2.cdb_len = xs->cmdlen; 713 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 714 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 715 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 716 sc_link->scsipi_scsi.lun); 717 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 718 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 719 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 720 721 /* 722 * If there are any outstanding requests for the current target, 723 * then every 255th request send an ORDERED request. This heuristic 724 * tries to retain the benefit of request sorting while preventing 725 * request starvation. 255 is the max number of tags or pending commands 726 * a device may have outstanding. 727 */ 728 sc->reqcnt[sc_link->scsipi_scsi.target]++; 729 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 730 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 731 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 732 } else { 733 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 734 } 735 736 737 if (xs->datalen) { 738 /* 739 * Map the DMA transfer. 740 */ 741 #ifdef TFS 742 if (flags & SCSI_DATA_UIO) { 743 error = bus_dmamap_load_uio(dmat, 744 ccb->dmamap_xfer, (struct uio *) xs->data, 745 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 746 } else 747 #endif /* TFS */ 748 { 749 error = bus_dmamap_load(dmat, 750 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 751 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 752 } 753 754 if (error) { 755 if (error == EFBIG) { 756 printf("%s: adv_scsi_cmd, more than %d dma" 757 " segments\n", 758 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 759 } else { 760 printf("%s: adv_scsi_cmd, error %d loading" 761 " dma map\n", 762 sc->sc_dev.dv_xname, error); 763 } 764 765 xs->error = XS_DRIVER_STUFFUP; 766 adv_free_ccb(sc, ccb); 767 return (COMPLETE); 768 } 769 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 770 ccb->dmamap_xfer->dm_mapsize, 771 (flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 772 BUS_DMASYNC_PREWRITE); 773 774 775 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 776 777 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 778 779 ccb->sghead.sg_list[nsegs].addr = 780 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 781 ccb->sghead.sg_list[nsegs].bytes = 782 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 783 } 784 785 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 786 ccb->dmamap_xfer->dm_nsegs; 787 788 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 789 ccb->scsiq.sg_head = &ccb->sghead; 790 ccb->scsiq.q1.data_addr = 0; 791 ccb->scsiq.q1.data_cnt = 0; 792 } else { 793 /* 794 * No data xfer, use non S/G values. 795 */ 796 ccb->scsiq.q1.data_addr = 0; 797 ccb->scsiq.q1.data_cnt = 0; 798 } 799 800 #ifdef ASC_DEBUG 801 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 802 sc_link->scsipi_scsi.target, 803 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 804 (unsigned long)ccb); 805 #endif 806 s = splbio(); 807 adv_queue_ccb(sc, ccb); 808 splx(s); 809 810 /* 811 * Usually return SUCCESSFULLY QUEUED 812 */ 813 if ((flags & SCSI_POLL) == 0) 814 return (SUCCESSFULLY_QUEUED); 815 816 /* 817 * If we can't use interrupts, poll on completion 818 */ 819 if (adv_poll(sc, xs, ccb->timeout)) { 820 adv_timeout(ccb); 821 if (adv_poll(sc, xs, ccb->timeout)) 822 adv_timeout(ccb); 823 } 824 return (COMPLETE); 825 } 826 827 828 int 829 adv_intr(arg) 830 void *arg; 831 { 832 ASC_SOFTC *sc = arg; 833 struct scsipi_xfer *xs; 834 835 #ifdef ASC_DEBUG 836 int int_pend = FALSE; 837 838 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 839 { 840 int_pend = TRUE; 841 printf("ISR - "); 842 } 843 #endif 844 AscISR(sc); 845 #ifdef ASC_DEBUG 846 if(int_pend) 847 printf("\n"); 848 #endif 849 850 /* 851 * If there are queue entries in the software queue, try to 852 * run the first one. We should be more or less guaranteed 853 * to succeed, since we just freed a CCB. 854 * 855 * NOTE: adv_scsi_cmd() relies on our calling it with 856 * the first entry in the queue. 857 */ 858 if ((xs = sc->sc_queue.lh_first) != NULL) 859 (void) adv_scsi_cmd(xs); 860 861 return (1); 862 } 863 864 865 /* 866 * Poll a particular unit, looking for a particular xs 867 */ 868 static int 869 adv_poll(sc, xs, count) 870 ASC_SOFTC *sc; 871 struct scsipi_xfer *xs; 872 int count; 873 { 874 875 /* timeouts are in msec, so we loop in 1000 usec cycles */ 876 while (count) { 877 adv_intr(sc); 878 if (xs->flags & ITSDONE) 879 return (0); 880 delay(1000); /* only happens in boot so ok */ 881 count--; 882 } 883 return (1); 884 } 885 886 887 static void 888 adv_timeout(arg) 889 void *arg; 890 { 891 ADV_CCB *ccb = arg; 892 struct scsipi_xfer *xs = ccb->xs; 893 struct scsipi_link *sc_link = xs->sc_link; 894 ASC_SOFTC *sc = sc_link->adapter_softc; 895 int s; 896 897 scsi_print_addr(sc_link); 898 printf("timed out"); 899 900 s = splbio(); 901 902 /* 903 * If it has been through before, then a previous abort has failed, 904 * don't try abort again, reset the bus instead. 905 */ 906 if (ccb->flags & CCB_ABORT) { 907 /* abort timed out */ 908 printf(" AGAIN. Resetting Bus\n"); 909 /* Lets try resetting the bus! */ 910 if (AscResetBus(sc) == ASC_ERROR) { 911 ccb->timeout = sc->scsi_reset_wait; 912 adv_queue_ccb(sc, ccb); 913 } 914 } else { 915 /* abort the operation that has timed out */ 916 printf("\n"); 917 AscAbortCCB(sc, (u_int32_t) ccb); 918 ccb->xs->error = XS_TIMEOUT; 919 ccb->timeout = ADV_ABORT_TIMEOUT; 920 ccb->flags |= CCB_ABORT; 921 adv_queue_ccb(sc, ccb); 922 } 923 924 splx(s); 925 } 926 927 928 static void 929 adv_watchdog(arg) 930 void *arg; 931 { 932 ADV_CCB *ccb = arg; 933 struct scsipi_xfer *xs = ccb->xs; 934 struct scsipi_link *sc_link = xs->sc_link; 935 ASC_SOFTC *sc = sc_link->adapter_softc; 936 int s; 937 938 s = splbio(); 939 940 ccb->flags &= ~CCB_WATCHDOG; 941 adv_start_ccbs(sc); 942 943 splx(s); 944 } 945 946 947 /******************************************************************************/ 948 /* NARROW and WIDE boards Interrupt callbacks */ 949 /******************************************************************************/ 950 951 952 /* 953 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 954 * 955 * Interrupt callback function for the Narrow SCSI Asc Library. 956 */ 957 static void 958 adv_narrow_isr_callback(sc, qdonep) 959 ASC_SOFTC *sc; 960 ASC_QDONE_INFO *qdonep; 961 { 962 bus_dma_tag_t dmat = sc->sc_dmat; 963 ADV_CCB *ccb = (ADV_CCB *) qdonep->d2.ccb_ptr; 964 struct scsipi_xfer *xs = ccb->xs; 965 struct scsipi_sense_data *s1, *s2; 966 967 968 #ifdef ASC_DEBUG 969 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 970 (unsigned long)ccb, 971 xs->sc_link->scsipi_scsi.target, 972 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 973 #endif 974 untimeout(adv_timeout, ccb); 975 976 /* 977 * If we were a data transfer, unload the map that described 978 * the data buffer. 979 */ 980 if (xs->datalen) { 981 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 982 ccb->dmamap_xfer->dm_mapsize, 983 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 984 BUS_DMASYNC_POSTWRITE); 985 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 986 } 987 if ((ccb->flags & CCB_ALLOC) == 0) { 988 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 989 Debugger(); 990 return; 991 } 992 /* 993 * 'qdonep' contains the command's ending status. 994 */ 995 #ifdef ASC_DEBUG 996 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 997 #endif 998 switch (qdonep->d3.done_stat) { 999 case ASC_QD_NO_ERROR: 1000 switch (qdonep->d3.host_stat) { 1001 case ASC_QHSTA_NO_ERROR: 1002 xs->error = XS_NOERROR; 1003 xs->resid = 0; 1004 break; 1005 1006 default: 1007 /* QHSTA error occurred */ 1008 xs->error = XS_DRIVER_STUFFUP; 1009 break; 1010 } 1011 1012 /* 1013 * If an INQUIRY command completed successfully, then call 1014 * the AscInquiryHandling() function to patch bugged boards. 1015 */ 1016 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 1017 (xs->sc_link->scsipi_scsi.lun == 0) && 1018 (xs->datalen - qdonep->remain_bytes) >= 8) { 1019 AscInquiryHandling(sc, 1020 xs->sc_link->scsipi_scsi.target & 0x7, 1021 (ASC_SCSI_INQUIRY *) xs->data); 1022 } 1023 break; 1024 1025 case ASC_QD_WITH_ERROR: 1026 switch (qdonep->d3.host_stat) { 1027 case ASC_QHSTA_NO_ERROR: 1028 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 1029 s1 = &ccb->scsi_sense; 1030 s2 = &xs->sense.scsi_sense; 1031 *s2 = *s1; 1032 xs->error = XS_SENSE; 1033 } else { 1034 xs->error = XS_DRIVER_STUFFUP; 1035 } 1036 break; 1037 1038 default: 1039 /* QHSTA error occurred */ 1040 xs->error = XS_DRIVER_STUFFUP; 1041 break; 1042 } 1043 break; 1044 1045 case ASC_QD_ABORTED_BY_HOST: 1046 default: 1047 xs->error = XS_DRIVER_STUFFUP; 1048 break; 1049 } 1050 1051 1052 adv_free_ccb(sc, ccb); 1053 xs->flags |= ITSDONE; 1054 scsipi_done(xs); 1055 } 1056
Indexes created Sun Sep 21 14:09:52 GMT 2025