adv.c revision 1.6
1 /* $NetBSD: adv.c,v 1.6 1998/10/28 20:39:45 dante 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 struct scsipi_adapter adv_switch = 103 { 104 adv_scsi_cmd, /* called to start/enqueue a SCSI command */ 105 advminphys, /* to limit the transfer to max device can do */ 106 NULL, /* scsipi_ioctl */ 107 }; 108 109 110 /* the below structure is so we have a default dev struct for out link struct */ 111 struct scsipi_device adv_dev = 112 { 113 NULL, /* Use default error handler */ 114 NULL, /* have a queue, served by this */ 115 NULL, /* have no async handler */ 116 NULL, /* Use default 'done' routine */ 117 }; 118 119 120 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 121 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 122 123 124 /******************************************************************************/ 125 /* scsipi_xfer queue routines */ 126 /******************************************************************************/ 127 128 129 /* 130 * Insert a scsipi_xfer into the software queue. We overload xs->free_list 131 * to avoid having to allocate additional resources (since we're used 132 * only during resource shortages anyhow. 133 */ 134 static void 135 adv_enqueue(sc, xs, infront) 136 ASC_SOFTC *sc; 137 struct scsipi_xfer *xs; 138 int infront; 139 { 140 141 if (infront || sc->sc_queue.lh_first == NULL) { 142 if (sc->sc_queue.lh_first == NULL) 143 sc->sc_queuelast = xs; 144 LIST_INSERT_HEAD(&sc->sc_queue, xs, free_list); 145 return; 146 } 147 LIST_INSERT_AFTER(sc->sc_queuelast, xs, free_list); 148 sc->sc_queuelast = xs; 149 } 150 151 152 /* 153 * Pull a scsipi_xfer off the front of the software queue. 154 */ 155 static struct scsipi_xfer * 156 adv_dequeue(sc) 157 ASC_SOFTC *sc; 158 { 159 struct scsipi_xfer *xs; 160 161 xs = sc->sc_queue.lh_first; 162 LIST_REMOVE(xs, free_list); 163 164 if (sc->sc_queue.lh_first == NULL) 165 sc->sc_queuelast = NULL; 166 167 return (xs); 168 } 169 170 171 /******************************************************************************/ 172 /* Control Blocks routines */ 173 /******************************************************************************/ 174 175 176 static int 177 adv_alloc_ccbs(sc) 178 ASC_SOFTC *sc; 179 { 180 bus_dma_segment_t seg; 181 int error, rseg; 182 183 /* 184 * Allocate the control blocks. 185 */ 186 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 187 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 188 printf("%s: unable to allocate control structures," 189 " error = %d\n", sc->sc_dev.dv_xname, error); 190 return (error); 191 } 192 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 193 sizeof(struct adv_control), (caddr_t *) & sc->sc_control, 194 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 195 printf("%s: unable to map control structures, error = %d\n", 196 sc->sc_dev.dv_xname, error); 197 return (error); 198 } 199 /* 200 * Create and load the DMA map used for the control blocks. 201 */ 202 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 203 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 204 &sc->sc_dmamap_control)) != 0) { 205 printf("%s: unable to create control DMA map, error = %d\n", 206 sc->sc_dev.dv_xname, error); 207 return (error); 208 } 209 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 210 sc->sc_control, sizeof(struct adv_control), NULL, 211 BUS_DMA_NOWAIT)) != 0) { 212 printf("%s: unable to load control DMA map, error = %d\n", 213 sc->sc_dev.dv_xname, error); 214 return (error); 215 } 216 return (0); 217 } 218 219 220 /* 221 * Create a set of ccbs and add them to the free list. Called once 222 * by adv_init(). We return the number of CCBs successfully created. 223 */ 224 static int 225 adv_create_ccbs(sc, ccbstore, count) 226 ASC_SOFTC *sc; 227 ADV_CCB *ccbstore; 228 int count; 229 { 230 ADV_CCB *ccb; 231 int i, error; 232 233 bzero(ccbstore, sizeof(ADV_CCB) * count); 234 for (i = 0; i < count; i++) { 235 ccb = &ccbstore[i]; 236 if ((error = adv_init_ccb(sc, ccb)) != 0) { 237 printf("%s: unable to initialize ccb, error = %d\n", 238 sc->sc_dev.dv_xname, error); 239 return (i); 240 } 241 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 242 } 243 244 return (i); 245 } 246 247 248 /* 249 * A ccb is put onto the free list. 250 */ 251 static void 252 adv_free_ccb(sc, ccb) 253 ASC_SOFTC *sc; 254 ADV_CCB *ccb; 255 { 256 int s; 257 258 s = splbio(); 259 260 adv_reset_ccb(ccb); 261 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 262 263 /* 264 * If there were none, wake anybody waiting for one to come free, 265 * starting with queued entries. 266 */ 267 if (ccb->chain.tqe_next == 0) 268 wakeup(&sc->sc_free_ccb); 269 270 splx(s); 271 } 272 273 274 static void 275 adv_reset_ccb(ccb) 276 ADV_CCB *ccb; 277 { 278 279 ccb->flags = 0; 280 } 281 282 283 static int 284 adv_init_ccb(sc, ccb) 285 ASC_SOFTC *sc; 286 ADV_CCB *ccb; 287 { 288 int error; 289 290 /* 291 * Create the DMA map for this CCB. 292 */ 293 error = bus_dmamap_create(sc->sc_dmat, 294 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 295 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 296 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 297 if (error) { 298 printf("%s: unable to create DMA map, error = %d\n", 299 sc->sc_dev.dv_xname, error); 300 return (error); 301 } 302 adv_reset_ccb(ccb); 303 return (0); 304 } 305 306 307 /* 308 * Get a free ccb 309 * 310 * If there are none, see if we can allocate a new one 311 */ 312 static ADV_CCB * 313 adv_get_ccb(sc, flags) 314 ASC_SOFTC *sc; 315 int flags; 316 { 317 ADV_CCB *ccb = 0; 318 int s; 319 320 s = splbio(); 321 322 /* 323 * If we can and have to, sleep waiting for one to come free 324 * but only if we can't allocate a new one. 325 */ 326 for (;;) { 327 ccb = sc->sc_free_ccb.tqh_first; 328 if (ccb) { 329 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 330 break; 331 } 332 if ((flags & SCSI_NOSLEEP) != 0) 333 goto out; 334 335 tsleep(&sc->sc_free_ccb, PRIBIO, "advccb", 0); 336 } 337 338 ccb->flags |= CCB_ALLOC; 339 340 out: 341 splx(s); 342 return (ccb); 343 } 344 345 346 /* 347 * Queue a CCB to be sent to the controller, and send it if possible. 348 */ 349 static void 350 adv_queue_ccb(sc, ccb) 351 ASC_SOFTC *sc; 352 ADV_CCB *ccb; 353 { 354 355 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 356 357 adv_start_ccbs(sc); 358 } 359 360 361 static void 362 adv_start_ccbs(sc) 363 ASC_SOFTC *sc; 364 { 365 ADV_CCB *ccb; 366 367 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 368 if (ccb->flags & CCB_WATCHDOG) 369 untimeout(adv_watchdog, ccb); 370 371 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 372 ccb->flags |= CCB_WATCHDOG; 373 timeout(adv_watchdog, ccb, 374 (ADV_WATCH_TIMEOUT * hz) / 1000); 375 break; 376 } 377 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 378 379 if ((ccb->xs->flags & SCSI_POLL) == 0) 380 timeout(adv_timeout, ccb, (ccb->timeout * hz) / 1000); 381 } 382 } 383 384 385 /******************************************************************************/ 386 /* DMA able memory allocation routines */ 387 /******************************************************************************/ 388 389 390 /* 391 * Allocate a DMA able memory for overrun_buffer. 392 * This memory can be safely shared among all the AdvanSys boards. 393 */ 394 u_int8_t * 395 adv_alloc_overrunbuf(dvname, dmat) 396 char *dvname; 397 bus_dma_tag_t dmat; 398 { 399 static u_int8_t *overrunbuf = NULL; 400 401 bus_dmamap_t ovrbuf_dmamap; 402 bus_dma_segment_t seg; 403 int rseg, error; 404 405 406 /* 407 * if an overrun buffer has been already allocated don't allocate it 408 * again. Instead return the address of the allocated buffer. 409 */ 410 if (overrunbuf) 411 return (overrunbuf); 412 413 414 if ((error = bus_dmamem_alloc(dmat, ASC_OVERRUN_BSIZE, 415 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 416 printf("%s: unable to allocate overrun buffer, error = %d\n", 417 dvname, error); 418 return (0); 419 } 420 if ((error = bus_dmamem_map(dmat, &seg, rseg, ASC_OVERRUN_BSIZE, 421 (caddr_t *) & overrunbuf, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 422 printf("%s: unable to map overrun buffer, error = %d\n", 423 dvname, error); 424 425 bus_dmamem_free(dmat, &seg, 1); 426 return (0); 427 } 428 if ((error = bus_dmamap_create(dmat, ASC_OVERRUN_BSIZE, 1, 429 ASC_OVERRUN_BSIZE, 0, BUS_DMA_NOWAIT, &ovrbuf_dmamap)) != 0) { 430 printf("%s: unable to create overrun buffer DMA map," 431 " error = %d\n", dvname, error); 432 433 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 434 bus_dmamem_free(dmat, &seg, 1); 435 return (0); 436 } 437 if ((error = bus_dmamap_load(dmat, ovrbuf_dmamap, overrunbuf, 438 ASC_OVERRUN_BSIZE, NULL, BUS_DMA_NOWAIT)) != 0) { 439 printf("%s: unable to load overrun buffer DMA map," 440 " error = %d\n", dvname, error); 441 442 bus_dmamap_destroy(dmat, ovrbuf_dmamap); 443 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 444 bus_dmamem_free(dmat, &seg, 1); 445 return (0); 446 } 447 return (overrunbuf); 448 } 449 450 451 /******************************************************************************/ 452 /* SCSI layer interfacing routines */ 453 /******************************************************************************/ 454 455 456 int 457 adv_init(sc) 458 ASC_SOFTC *sc; 459 { 460 int warn; 461 462 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) 463 panic("adv_init: adv_find_signature failed"); 464 465 /* 466 * Read the board configuration 467 */ 468 AscInitASC_SOFTC(sc); 469 warn = AscInitFromEEP(sc); 470 if (warn) { 471 printf("%s -get: ", sc->sc_dev.dv_xname); 472 switch (warn) { 473 case -1: 474 printf("Chip is not halted\n"); 475 break; 476 477 case -2: 478 printf("Couldn't get MicroCode Start" 479 " address\n"); 480 break; 481 482 case ASC_WARN_IO_PORT_ROTATE: 483 printf("I/O port address modified\n"); 484 break; 485 486 case ASC_WARN_AUTO_CONFIG: 487 printf("I/O port increment switch enabled\n"); 488 break; 489 490 case ASC_WARN_EEPROM_CHKSUM: 491 printf("EEPROM checksum error\n"); 492 break; 493 494 case ASC_WARN_IRQ_MODIFIED: 495 printf("IRQ modified\n"); 496 break; 497 498 case ASC_WARN_CMD_QNG_CONFLICT: 499 printf("tag queuing enabled w/o disconnects\n"); 500 break; 501 502 default: 503 printf("unknown warning %d\n", warn); 504 } 505 } 506 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 507 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 508 509 /* 510 * Modify the board configuration 511 */ 512 warn = AscInitFromASC_SOFTC(sc); 513 if (warn) { 514 printf("%s -set: ", sc->sc_dev.dv_xname); 515 switch (warn) { 516 case ASC_WARN_CMD_QNG_CONFLICT: 517 printf("tag queuing enabled w/o disconnects\n"); 518 break; 519 520 case ASC_WARN_AUTO_CONFIG: 521 printf("I/O port increment switch enabled\n"); 522 break; 523 524 default: 525 printf("unknown warning %d\n", warn); 526 } 527 } 528 sc->isr_callback = (ulong) adv_narrow_isr_callback; 529 530 if (!(sc->overrun_buf = adv_alloc_overrunbuf(sc->sc_dev.dv_xname, 531 sc->sc_dmat))) { 532 return (1); 533 } 534 535 return (0); 536 } 537 538 539 void 540 adv_attach(sc) 541 ASC_SOFTC *sc; 542 { 543 int i, error; 544 545 /* 546 * Initialize board RISC chip and enable interrupts. 547 */ 548 switch (AscInitDriver(sc)) { 549 case 0: 550 /* AllOK */ 551 break; 552 553 case 1: 554 panic("%s: bad signature", sc->sc_dev.dv_xname); 555 break; 556 557 case 2: 558 panic("%s: unable to load MicroCode", 559 sc->sc_dev.dv_xname); 560 break; 561 562 case 3: 563 panic("%s: unable to initialize MicroCode", 564 sc->sc_dev.dv_xname); 565 break; 566 567 default: 568 panic("%s: unable to initialize board RISC chip", 569 sc->sc_dev.dv_xname); 570 } 571 572 573 /* 574 * fill in the prototype scsipi_link. 575 */ 576 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 577 sc->sc_link.adapter_softc = sc; 578 sc->sc_link.scsipi_scsi.adapter_target = sc->chip_scsi_id; 579 sc->sc_link.adapter = &adv_switch; 580 sc->sc_link.device = &adv_dev; 581 sc->sc_link.openings = 4; 582 sc->sc_link.scsipi_scsi.max_target = 7; 583 sc->sc_link.type = BUS_SCSI; 584 585 586 TAILQ_INIT(&sc->sc_free_ccb); 587 TAILQ_INIT(&sc->sc_waiting_ccb); 588 LIST_INIT(&sc->sc_queue); 589 590 591 /* 592 * Allocate the Control Blocks. 593 */ 594 error = adv_alloc_ccbs(sc); 595 if (error) 596 return; /* (error) */ ; 597 598 /* 599 * Create and initialize the Control Blocks. 600 */ 601 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 602 if (i == 0) { 603 printf("%s: unable to create control blocks\n", 604 sc->sc_dev.dv_xname); 605 return; /* (ENOMEM) */ ; 606 } else if (i != ADV_MAX_CCB) { 607 printf("%s: WARNING: only %d of %d control blocks created\n", 608 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 609 } 610 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 611 } 612 613 614 static void 615 advminphys(bp) 616 struct buf *bp; 617 { 618 619 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 620 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 621 minphys(bp); 622 } 623 624 625 /* 626 * start a scsi operation given the command and the data address. Also needs 627 * the unit, target and lu. 628 */ 629 static int 630 adv_scsi_cmd(xs) 631 struct scsipi_xfer *xs; 632 { 633 struct scsipi_link *sc_link = xs->sc_link; 634 ASC_SOFTC *sc = sc_link->adapter_softc; 635 bus_dma_tag_t dmat = sc->sc_dmat; 636 ADV_CCB *ccb; 637 int s, flags, error, nsegs; 638 int fromqueue = 1, dontqueue = 0; 639 640 641 s = splbio(); /* protect the queue */ 642 643 /* 644 * If we're running the queue from adv_done(), we've been 645 * called with the first queue entry as our argument. 646 */ 647 if (xs == sc->sc_queue.lh_first) { 648 xs = adv_dequeue(sc); 649 fromqueue = 1; 650 } else { 651 652 /* Polled requests can't be queued for later. */ 653 dontqueue = xs->flags & SCSI_POLL; 654 655 /* 656 * If there are jobs in the queue, run them first. 657 */ 658 if (sc->sc_queue.lh_first != NULL) { 659 /* 660 * If we can't queue, we have to abort, since 661 * we have to preserve order. 662 */ 663 if (dontqueue) { 664 splx(s); 665 xs->error = XS_DRIVER_STUFFUP; 666 return (TRY_AGAIN_LATER); 667 } 668 /* 669 * Swap with the first queue entry. 670 */ 671 adv_enqueue(sc, xs, 0); 672 xs = adv_dequeue(sc); 673 fromqueue = 1; 674 } 675 } 676 677 678 /* 679 * get a ccb to use. If the transfer 680 * is from a buf (possibly from interrupt time) 681 * then we can't allow it to sleep 682 */ 683 684 flags = xs->flags; 685 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 686 /* 687 * If we can't queue, we lose. 688 */ 689 if (dontqueue) { 690 splx(s); 691 xs->error = XS_DRIVER_STUFFUP; 692 return (TRY_AGAIN_LATER); 693 } 694 /* 695 * Stuff ourselves into the queue, in front 696 * if we came off in the first place. 697 */ 698 adv_enqueue(sc, xs, fromqueue); 699 splx(s); 700 return (SUCCESSFULLY_QUEUED); 701 } 702 splx(s); /* done playing with the queue */ 703 704 ccb->xs = xs; 705 ccb->timeout = xs->timeout; 706 707 /* 708 * Build up the request 709 */ 710 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 711 712 ccb->scsiq.q2.ccb_ptr = (ulong) ccb; 713 714 ccb->scsiq.cdbptr = &xs->cmd->opcode; 715 ccb->scsiq.q2.cdb_len = xs->cmdlen; 716 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 717 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 718 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 719 sc_link->scsipi_scsi.lun); 720 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 721 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 722 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 723 724 /* 725 * If there are any outstanding requests for the current target, 726 * then every 255th request send an ORDERED request. This heuristic 727 * tries to retain the benefit of request sorting while preventing 728 * request starvation. 255 is the max number of tags or pending commands 729 * a device may have outstanding. 730 */ 731 sc->reqcnt[sc_link->scsipi_scsi.target]++; 732 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 733 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 734 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 735 } else { 736 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 737 } 738 739 740 if (xs->datalen) { 741 /* 742 * Map the DMA transfer. 743 */ 744 #ifdef TFS 745 if (flags & SCSI_DATA_UIO) { 746 error = bus_dmamap_load_uio(dmat, 747 ccb->dmamap_xfer, (struct uio *) xs->data, 748 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 749 } else 750 #endif /* TFS */ 751 { 752 error = bus_dmamap_load(dmat, 753 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 754 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 755 } 756 757 if (error) { 758 if (error == EFBIG) { 759 printf("%s: adv_scsi_cmd, more than %d dma" 760 " segments\n", 761 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 762 } else { 763 printf("%s: adv_scsi_cmd, error %d loading" 764 " dma map\n", 765 sc->sc_dev.dv_xname, error); 766 } 767 768 xs->error = XS_DRIVER_STUFFUP; 769 adv_free_ccb(sc, ccb); 770 return (COMPLETE); 771 } 772 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 773 ccb->dmamap_xfer->dm_mapsize, 774 (flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 775 BUS_DMASYNC_PREWRITE); 776 777 778 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 779 780 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 781 782 ccb->sghead.sg_list[nsegs].addr = 783 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 784 ccb->sghead.sg_list[nsegs].bytes = 785 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 786 } 787 788 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 789 ccb->dmamap_xfer->dm_nsegs; 790 791 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 792 ccb->scsiq.sg_head = &ccb->sghead; 793 ccb->scsiq.q1.data_addr = 0; 794 ccb->scsiq.q1.data_cnt = 0; 795 } else { 796 /* 797 * No data xfer, use non S/G values. 798 */ 799 ccb->scsiq.q1.data_addr = 0; 800 ccb->scsiq.q1.data_cnt = 0; 801 } 802 803 #ifdef ASC_DEBUG 804 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 805 sc_link->scsipi_scsi.target, 806 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 807 (unsigned long)ccb); 808 #endif 809 s = splbio(); 810 adv_queue_ccb(sc, ccb); 811 splx(s); 812 813 /* 814 * Usually return SUCCESSFULLY QUEUED 815 */ 816 if ((flags & SCSI_POLL) == 0) 817 return (SUCCESSFULLY_QUEUED); 818 819 /* 820 * If we can't use interrupts, poll on completion 821 */ 822 if (adv_poll(sc, xs, ccb->timeout)) { 823 adv_timeout(ccb); 824 if (adv_poll(sc, xs, ccb->timeout)) 825 adv_timeout(ccb); 826 } 827 return (COMPLETE); 828 } 829 830 831 int 832 adv_intr(arg) 833 void *arg; 834 { 835 ASC_SOFTC *sc = arg; 836 struct scsipi_xfer *xs; 837 838 #ifdef ASC_DEBUG 839 int int_pend = FALSE; 840 841 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 842 { 843 int_pend = TRUE; 844 printf("ISR - "); 845 } 846 #endif 847 AscISR(sc); 848 #ifdef ASC_DEBUG 849 if(int_pend) 850 printf("\n"); 851 #endif 852 853 /* 854 * If there are queue entries in the software queue, try to 855 * run the first one. We should be more or less guaranteed 856 * to succeed, since we just freed a CCB. 857 * 858 * NOTE: adv_scsi_cmd() relies on our calling it with 859 * the first entry in the queue. 860 */ 861 if ((xs = sc->sc_queue.lh_first) != NULL) 862 (void) adv_scsi_cmd(xs); 863 864 return (1); 865 } 866 867 868 /* 869 * Poll a particular unit, looking for a particular xs 870 */ 871 static int 872 adv_poll(sc, xs, count) 873 ASC_SOFTC *sc; 874 struct scsipi_xfer *xs; 875 int count; 876 { 877 878 /* timeouts are in msec, so we loop in 1000 usec cycles */ 879 while (count) { 880 adv_intr(sc); 881 if (xs->flags & ITSDONE) 882 return (0); 883 delay(1000); /* only happens in boot so ok */ 884 count--; 885 } 886 return (1); 887 } 888 889 890 static void 891 adv_timeout(arg) 892 void *arg; 893 { 894 ADV_CCB *ccb = arg; 895 struct scsipi_xfer *xs = ccb->xs; 896 struct scsipi_link *sc_link = xs->sc_link; 897 ASC_SOFTC *sc = sc_link->adapter_softc; 898 int s; 899 900 scsi_print_addr(sc_link); 901 printf("timed out"); 902 903 s = splbio(); 904 905 /* 906 * If it has been through before, then a previous abort has failed, 907 * don't try abort again, reset the bus instead. 908 */ 909 if (ccb->flags & CCB_ABORT) { 910 /* abort timed out */ 911 printf(" AGAIN. Resetting Bus\n"); 912 /* Lets try resetting the bus! */ 913 if (AscResetBus(sc) == ASC_ERROR) { 914 ccb->timeout = sc->scsi_reset_wait; 915 adv_queue_ccb(sc, ccb); 916 } 917 } else { 918 /* abort the operation that has timed out */ 919 printf("\n"); 920 AscAbortCCB(sc, (u_int32_t) ccb); 921 ccb->xs->error = XS_TIMEOUT; 922 ccb->timeout = ADV_ABORT_TIMEOUT; 923 ccb->flags |= CCB_ABORT; 924 adv_queue_ccb(sc, ccb); 925 } 926 927 splx(s); 928 } 929 930 931 static void 932 adv_watchdog(arg) 933 void *arg; 934 { 935 ADV_CCB *ccb = arg; 936 struct scsipi_xfer *xs = ccb->xs; 937 struct scsipi_link *sc_link = xs->sc_link; 938 ASC_SOFTC *sc = sc_link->adapter_softc; 939 int s; 940 941 s = splbio(); 942 943 ccb->flags &= ~CCB_WATCHDOG; 944 adv_start_ccbs(sc); 945 946 splx(s); 947 } 948 949 950 /******************************************************************************/ 951 /* NARROW and WIDE boards Interrupt callbacks */ 952 /******************************************************************************/ 953 954 955 /* 956 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 957 * 958 * Interrupt callback function for the Narrow SCSI Asc Library. 959 */ 960 static void 961 adv_narrow_isr_callback(sc, qdonep) 962 ASC_SOFTC *sc; 963 ASC_QDONE_INFO *qdonep; 964 { 965 bus_dma_tag_t dmat = sc->sc_dmat; 966 ADV_CCB *ccb = (ADV_CCB *) qdonep->d2.ccb_ptr; 967 struct scsipi_xfer *xs = ccb->xs; 968 struct scsipi_sense_data *s1, *s2; 969 970 971 #ifdef ASC_DEBUG 972 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 973 (unsigned long)ccb, 974 xs->sc_link->scsipi_scsi.target, 975 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 976 #endif 977 untimeout(adv_timeout, ccb); 978 979 /* 980 * If we were a data transfer, unload the map that described 981 * the data buffer. 982 */ 983 if (xs->datalen) { 984 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 985 ccb->dmamap_xfer->dm_mapsize, 986 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 987 BUS_DMASYNC_POSTWRITE); 988 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 989 } 990 if ((ccb->flags & CCB_ALLOC) == 0) { 991 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 992 Debugger(); 993 return; 994 } 995 /* 996 * 'qdonep' contains the command's ending status. 997 */ 998 #ifdef ASC_DEBUG 999 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 1000 #endif 1001 switch (qdonep->d3.done_stat) { 1002 case ASC_QD_NO_ERROR: 1003 switch (qdonep->d3.host_stat) { 1004 case ASC_QHSTA_NO_ERROR: 1005 xs->error = XS_NOERROR; 1006 xs->resid = 0; 1007 break; 1008 1009 default: 1010 /* QHSTA error occurred */ 1011 xs->error = XS_DRIVER_STUFFUP; 1012 break; 1013 } 1014 1015 /* 1016 * If an INQUIRY command completed successfully, then call 1017 * the AscInquiryHandling() function to patch bugged boards. 1018 */ 1019 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 1020 (xs->sc_link->scsipi_scsi.lun == 0) && 1021 (xs->datalen - qdonep->remain_bytes) >= 8) { 1022 AscInquiryHandling(sc, 1023 xs->sc_link->scsipi_scsi.target & 0x7, 1024 (ASC_SCSI_INQUIRY *) xs->data); 1025 } 1026 break; 1027 1028 case ASC_QD_WITH_ERROR: 1029 switch (qdonep->d3.host_stat) { 1030 case ASC_QHSTA_NO_ERROR: 1031 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 1032 s1 = &ccb->scsi_sense; 1033 s2 = &xs->sense.scsi_sense; 1034 *s2 = *s1; 1035 xs->error = XS_SENSE; 1036 } else { 1037 xs->error = XS_DRIVER_STUFFUP; 1038 } 1039 break; 1040 1041 default: 1042 /* QHSTA error occurred */ 1043 xs->error = XS_DRIVER_STUFFUP; 1044 break; 1045 } 1046 break; 1047 1048 case ASC_QD_ABORTED_BY_HOST: 1049 default: 1050 xs->error = XS_DRIVER_STUFFUP; 1051 break; 1052 } 1053 1054 1055 adv_free_ccb(sc, ccb); 1056 xs->flags |= ITSDONE; 1057 scsipi_done(xs); 1058 } 1059
Indexes created Sun Sep 21 14:09:52 GMT 2025