adv.c revision 1.11
1 /* $NetBSD: adv.c,v 1.11 1999/03/04 20:16:56 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/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_ccbs __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 static u_int8_t *adv_alloc_overrunbuf __P((char *dvname, bus_dma_tag_t)); 86 87 static int adv_scsi_cmd __P((struct scsipi_xfer *)); 88 static void advminphys __P((struct buf *)); 89 static void adv_narrow_isr_callback __P((ASC_SOFTC *, ASC_QDONE_INFO *)); 90 91 static int adv_poll __P((ASC_SOFTC *, struct scsipi_xfer *, int)); 92 static void adv_timeout __P((void *)); 93 static void adv_watchdog __P((void *)); 94 95 96 /******************************************************************************/ 97 98 99 /* the below structure is so we have a default dev struct for out link struct */ 100 struct scsipi_device adv_dev = 101 { 102 NULL, /* Use default error handler */ 103 NULL, /* have a queue, served by this */ 104 NULL, /* have no async handler */ 105 NULL, /* Use default 'done' routine */ 106 }; 107 108 109 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 110 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ 111 112 113 /******************************************************************************/ 114 /* scsipi_xfer queue routines */ 115 /******************************************************************************/ 116 117 118 /******************************************************************************/ 119 /* Control Blocks routines */ 120 /******************************************************************************/ 121 122 123 static int 124 adv_alloc_ccbs(sc) 125 ASC_SOFTC *sc; 126 { 127 bus_dma_segment_t seg; 128 int error, rseg; 129 130 /* 131 * Allocate the control blocks. 132 */ 133 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 134 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 135 printf("%s: unable to allocate control structures," 136 " error = %d\n", sc->sc_dev.dv_xname, error); 137 return (error); 138 } 139 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 140 sizeof(struct adv_control), (caddr_t *) & sc->sc_control, 141 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 142 printf("%s: unable to map control structures, error = %d\n", 143 sc->sc_dev.dv_xname, error); 144 return (error); 145 } 146 /* 147 * Create and load the DMA map used for the control blocks. 148 */ 149 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 150 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 151 &sc->sc_dmamap_control)) != 0) { 152 printf("%s: unable to create control DMA map, error = %d\n", 153 sc->sc_dev.dv_xname, error); 154 return (error); 155 } 156 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 157 sc->sc_control, sizeof(struct adv_control), NULL, 158 BUS_DMA_NOWAIT)) != 0) { 159 printf("%s: unable to load control DMA map, error = %d\n", 160 sc->sc_dev.dv_xname, error); 161 return (error); 162 } 163 return (0); 164 } 165 166 167 /* 168 * Create a set of ccbs and add them to the free list. Called once 169 * by adv_init(). We return the number of CCBs successfully created. 170 */ 171 static int 172 adv_create_ccbs(sc, ccbstore, count) 173 ASC_SOFTC *sc; 174 ADV_CCB *ccbstore; 175 int count; 176 { 177 ADV_CCB *ccb; 178 int i, error; 179 180 bzero(ccbstore, sizeof(ADV_CCB) * count); 181 for (i = 0; i < count; i++) { 182 ccb = &ccbstore[i]; 183 if ((error = adv_init_ccb(sc, ccb)) != 0) { 184 printf("%s: unable to initialize ccb, error = %d\n", 185 sc->sc_dev.dv_xname, error); 186 return (i); 187 } 188 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 189 } 190 191 return (i); 192 } 193 194 195 /* 196 * A ccb is put onto the free list. 197 */ 198 static void 199 adv_free_ccb(sc, ccb) 200 ASC_SOFTC *sc; 201 ADV_CCB *ccb; 202 { 203 int s; 204 205 s = splbio(); 206 207 adv_reset_ccb(ccb); 208 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 209 210 /* 211 * If there were none, wake anybody waiting for one to come free, 212 * starting with queued entries. 213 */ 214 if (ccb->chain.tqe_next == 0) 215 wakeup(&sc->sc_free_ccb); 216 217 splx(s); 218 } 219 220 221 static void 222 adv_reset_ccb(ccb) 223 ADV_CCB *ccb; 224 { 225 226 ccb->flags = 0; 227 } 228 229 230 static int 231 adv_init_ccb(sc, ccb) 232 ASC_SOFTC *sc; 233 ADV_CCB *ccb; 234 { 235 int hashnum, error; 236 237 /* 238 * Create the DMA map for this CCB. 239 */ 240 error = bus_dmamap_create(sc->sc_dmat, 241 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 242 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 243 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 244 if (error) { 245 printf("%s: unable to create DMA map, error = %d\n", 246 sc->sc_dev.dv_xname, error); 247 return (error); 248 } 249 250 /* 251 * put in the phystokv hash table 252 * Never gets taken out. 253 */ 254 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 255 ADV_CCB_OFF(ccb); 256 hashnum = CCB_HASH(ccb->hashkey); 257 ccb->nexthash = sc->sc_ccbhash[hashnum]; 258 sc->sc_ccbhash[hashnum] = ccb; 259 260 adv_reset_ccb(ccb); 261 return (0); 262 } 263 264 265 /* 266 * Get a free ccb 267 * 268 * If there are none, see if we can allocate a new one 269 */ 270 static ADV_CCB * 271 adv_get_ccb(sc, flags) 272 ASC_SOFTC *sc; 273 int flags; 274 { 275 ADV_CCB *ccb = 0; 276 int s; 277 278 s = splbio(); 279 280 /* 281 * If we can and have to, sleep waiting for one to come free 282 * but only if we can't allocate a new one. 283 */ 284 for (;;) { 285 ccb = sc->sc_free_ccb.tqh_first; 286 if (ccb) { 287 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 288 break; 289 } 290 if ((flags & SCSI_NOSLEEP) != 0) 291 goto out; 292 293 tsleep(&sc->sc_free_ccb, PRIBIO, "advccb", 0); 294 } 295 296 ccb->flags |= CCB_ALLOC; 297 298 out: 299 splx(s); 300 return (ccb); 301 } 302 303 304 /* 305 * Given a physical address, find the ccb that it corresponds to. 306 */ 307 ADV_CCB * 308 adv_ccb_phys_kv(sc, ccb_phys) 309 ASC_SOFTC *sc; 310 u_long ccb_phys; 311 { 312 int hashnum = CCB_HASH(ccb_phys); 313 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 314 315 while (ccb) { 316 if (ccb->hashkey == ccb_phys) 317 break; 318 ccb = ccb->nexthash; 319 } 320 return (ccb); 321 } 322 323 324 /* 325 * Queue a CCB to be sent to the controller, and send it if possible. 326 */ 327 static void 328 adv_queue_ccb(sc, ccb) 329 ASC_SOFTC *sc; 330 ADV_CCB *ccb; 331 { 332 333 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 334 335 adv_start_ccbs(sc); 336 } 337 338 339 static void 340 adv_start_ccbs(sc) 341 ASC_SOFTC *sc; 342 { 343 ADV_CCB *ccb; 344 345 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 346 if (ccb->flags & CCB_WATCHDOG) 347 untimeout(adv_watchdog, ccb); 348 349 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 350 ccb->flags |= CCB_WATCHDOG; 351 timeout(adv_watchdog, ccb, 352 (ADV_WATCH_TIMEOUT * hz) / 1000); 353 break; 354 } 355 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 356 357 if ((ccb->xs->flags & SCSI_POLL) == 0) 358 timeout(adv_timeout, ccb, (ccb->timeout * hz) / 1000); 359 } 360 } 361 362 363 /******************************************************************************/ 364 /* DMA able memory allocation routines */ 365 /******************************************************************************/ 366 367 368 /* 369 * Allocate a DMA able memory for overrun_buffer. 370 * This memory can be safely shared among all the AdvanSys boards. 371 */ 372 u_int8_t * 373 adv_alloc_overrunbuf(dvname, dmat) 374 char *dvname; 375 bus_dma_tag_t dmat; 376 { 377 static u_int8_t *overrunbuf = NULL; 378 379 bus_dmamap_t ovrbuf_dmamap; 380 bus_dma_segment_t seg; 381 int rseg, error; 382 383 384 /* 385 * if an overrun buffer has been already allocated don't allocate it 386 * again. Instead return the address of the allocated buffer. 387 */ 388 if (overrunbuf) 389 return (overrunbuf); 390 391 392 if ((error = bus_dmamem_alloc(dmat, ASC_OVERRUN_BSIZE, 393 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 394 printf("%s: unable to allocate overrun buffer, error = %d\n", 395 dvname, error); 396 return (0); 397 } 398 if ((error = bus_dmamem_map(dmat, &seg, rseg, ASC_OVERRUN_BSIZE, 399 (caddr_t *) & overrunbuf, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 400 printf("%s: unable to map overrun buffer, error = %d\n", 401 dvname, error); 402 403 bus_dmamem_free(dmat, &seg, 1); 404 return (0); 405 } 406 if ((error = bus_dmamap_create(dmat, ASC_OVERRUN_BSIZE, 1, 407 ASC_OVERRUN_BSIZE, 0, BUS_DMA_NOWAIT, &ovrbuf_dmamap)) != 0) { 408 printf("%s: unable to create overrun buffer DMA map," 409 " error = %d\n", dvname, error); 410 411 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 412 bus_dmamem_free(dmat, &seg, 1); 413 return (0); 414 } 415 if ((error = bus_dmamap_load(dmat, ovrbuf_dmamap, overrunbuf, 416 ASC_OVERRUN_BSIZE, NULL, BUS_DMA_NOWAIT)) != 0) { 417 printf("%s: unable to load overrun buffer DMA map," 418 " error = %d\n", dvname, error); 419 420 bus_dmamap_destroy(dmat, ovrbuf_dmamap); 421 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 422 bus_dmamem_free(dmat, &seg, 1); 423 return (0); 424 } 425 return (overrunbuf); 426 } 427 428 429 /******************************************************************************/ 430 /* SCSI layer interfacing routines */ 431 /******************************************************************************/ 432 433 434 int 435 adv_init(sc) 436 ASC_SOFTC *sc; 437 { 438 int warn; 439 440 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) 441 panic("adv_init: adv_find_signature failed"); 442 443 /* 444 * Read the board configuration 445 */ 446 AscInitASC_SOFTC(sc); 447 warn = AscInitFromEEP(sc); 448 if (warn) { 449 printf("%s -get: ", sc->sc_dev.dv_xname); 450 switch (warn) { 451 case -1: 452 printf("Chip is not halted\n"); 453 break; 454 455 case -2: 456 printf("Couldn't get MicroCode Start" 457 " address\n"); 458 break; 459 460 case ASC_WARN_IO_PORT_ROTATE: 461 printf("I/O port address modified\n"); 462 break; 463 464 case ASC_WARN_AUTO_CONFIG: 465 printf("I/O port increment switch enabled\n"); 466 break; 467 468 case ASC_WARN_EEPROM_CHKSUM: 469 printf("EEPROM checksum error\n"); 470 break; 471 472 case ASC_WARN_IRQ_MODIFIED: 473 printf("IRQ modified\n"); 474 break; 475 476 case ASC_WARN_CMD_QNG_CONFLICT: 477 printf("tag queuing enabled w/o disconnects\n"); 478 break; 479 480 default: 481 printf("unknown warning %d\n", warn); 482 } 483 } 484 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 485 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 486 487 /* 488 * Modify the board configuration 489 */ 490 warn = AscInitFromASC_SOFTC(sc); 491 if (warn) { 492 printf("%s -set: ", sc->sc_dev.dv_xname); 493 switch (warn) { 494 case ASC_WARN_CMD_QNG_CONFLICT: 495 printf("tag queuing enabled w/o disconnects\n"); 496 break; 497 498 case ASC_WARN_AUTO_CONFIG: 499 printf("I/O port increment switch enabled\n"); 500 break; 501 502 default: 503 printf("unknown warning %d\n", warn); 504 } 505 } 506 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 507 508 if (!(sc->overrun_buf = adv_alloc_overrunbuf(sc->sc_dev.dv_xname, 509 sc->sc_dmat))) { 510 return (1); 511 } 512 513 return (0); 514 } 515 516 517 void 518 adv_attach(sc) 519 ASC_SOFTC *sc; 520 { 521 int i, error; 522 523 /* 524 * Initialize board RISC chip and enable interrupts. 525 */ 526 switch (AscInitDriver(sc)) { 527 case 0: 528 /* AllOK */ 529 break; 530 531 case 1: 532 panic("%s: bad signature", sc->sc_dev.dv_xname); 533 break; 534 535 case 2: 536 panic("%s: unable to load MicroCode", 537 sc->sc_dev.dv_xname); 538 break; 539 540 case 3: 541 panic("%s: unable to initialize MicroCode", 542 sc->sc_dev.dv_xname); 543 break; 544 545 default: 546 panic("%s: unable to initialize board RISC chip", 547 sc->sc_dev.dv_xname); 548 } 549 550 /* 551 * Fill in the adapter. 552 */ 553 sc->sc_adapter.scsipi_cmd = adv_scsi_cmd; 554 sc->sc_adapter.scsipi_minphys = advminphys; 555 556 /* 557 * fill in the prototype scsipi_link. 558 */ 559 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 560 sc->sc_link.adapter_softc = sc; 561 sc->sc_link.scsipi_scsi.adapter_target = sc->chip_scsi_id; 562 sc->sc_link.adapter = &sc->sc_adapter; 563 sc->sc_link.device = &adv_dev; 564 sc->sc_link.openings = 4; 565 sc->sc_link.scsipi_scsi.max_target = 7; 566 sc->sc_link.scsipi_scsi.max_lun = 7; 567 sc->sc_link.type = BUS_SCSI; 568 569 570 TAILQ_INIT(&sc->sc_free_ccb); 571 TAILQ_INIT(&sc->sc_waiting_ccb); 572 TAILQ_INIT(&sc->sc_queue); 573 574 575 /* 576 * Allocate the Control Blocks. 577 */ 578 error = adv_alloc_ccbs(sc); 579 if (error) 580 return; /* (error) */ ; 581 582 /* 583 * Create and initialize the Control Blocks. 584 */ 585 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 586 if (i == 0) { 587 printf("%s: unable to create control blocks\n", 588 sc->sc_dev.dv_xname); 589 return; /* (ENOMEM) */ ; 590 } else if (i != ADV_MAX_CCB) { 591 printf("%s: WARNING: only %d of %d control blocks created\n", 592 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 593 } 594 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 595 } 596 597 598 static void 599 advminphys(bp) 600 struct buf *bp; 601 { 602 603 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 604 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 605 minphys(bp); 606 } 607 608 609 /* 610 * start a scsi operation given the command and the data address. Also needs 611 * the unit, target and lu. 612 */ 613 static int 614 adv_scsi_cmd(xs) 615 struct scsipi_xfer *xs; 616 { 617 struct scsipi_link *sc_link = xs->sc_link; 618 ASC_SOFTC *sc = sc_link->adapter_softc; 619 bus_dma_tag_t dmat = sc->sc_dmat; 620 ADV_CCB *ccb; 621 int s, flags, error, nsegs; 622 int fromqueue = 1, dontqueue = 0; 623 624 625 s = splbio(); /* protect the queue */ 626 627 /* 628 * If we're running the queue from adv_done(), we've been 629 * called with the first queue entry as our argument. 630 */ 631 if (xs == TAILQ_FIRST(&sc->sc_queue)) { 632 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 633 fromqueue = 1; 634 } else { 635 636 /* Polled requests can't be queued for later. */ 637 dontqueue = xs->flags & SCSI_POLL; 638 639 /* 640 * If there are jobs in the queue, run them first. 641 */ 642 if (TAILQ_FIRST(&sc->sc_queue) != NULL) { 643 /* 644 * If we can't queue, we have to abort, since 645 * we have to preserve order. 646 */ 647 if (dontqueue) { 648 splx(s); 649 xs->error = XS_DRIVER_STUFFUP; 650 return (TRY_AGAIN_LATER); 651 } 652 /* 653 * Swap with the first queue entry. 654 */ 655 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 656 xs = TAILQ_FIRST(&sc->sc_queue); 657 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 658 fromqueue = 1; 659 } 660 } 661 662 663 /* 664 * get a ccb to use. If the transfer 665 * is from a buf (possibly from interrupt time) 666 * then we can't allow it to sleep 667 */ 668 669 flags = xs->flags; 670 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 671 /* 672 * If we can't queue, we lose. 673 */ 674 if (dontqueue) { 675 splx(s); 676 xs->error = XS_DRIVER_STUFFUP; 677 return (TRY_AGAIN_LATER); 678 } 679 /* 680 * Stuff ourselves into the queue, in front 681 * if we came off in the first place. 682 */ 683 if (fromqueue) 684 TAILQ_INSERT_HEAD(&sc->sc_queue, xs, adapter_q); 685 else 686 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 687 splx(s); 688 return (SUCCESSFULLY_QUEUED); 689 } 690 splx(s); /* done playing with the queue */ 691 692 ccb->xs = xs; 693 ccb->timeout = xs->timeout; 694 695 /* 696 * Build up the request 697 */ 698 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 699 700 ccb->scsiq.q2.ccb_ptr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 701 ADV_CCB_OFF(ccb); 702 703 ccb->scsiq.cdbptr = &xs->cmd->opcode; 704 ccb->scsiq.q2.cdb_len = xs->cmdlen; 705 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 706 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 707 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 708 sc_link->scsipi_scsi.lun); 709 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 710 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 711 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 712 713 /* 714 * If there are any outstanding requests for the current target, 715 * then every 255th request send an ORDERED request. This heuristic 716 * tries to retain the benefit of request sorting while preventing 717 * request starvation. 255 is the max number of tags or pending commands 718 * a device may have outstanding. 719 */ 720 sc->reqcnt[sc_link->scsipi_scsi.target]++; 721 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 722 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 723 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 724 } else { 725 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 726 } 727 728 729 if (xs->datalen) { 730 /* 731 * Map the DMA transfer. 732 */ 733 #ifdef TFS 734 if (flags & SCSI_DATA_UIO) { 735 error = bus_dmamap_load_uio(dmat, 736 ccb->dmamap_xfer, (struct uio *) xs->data, 737 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 738 } else 739 #endif /* TFS */ 740 { 741 error = bus_dmamap_load(dmat, 742 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 743 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 744 } 745 746 if (error) { 747 if (error == EFBIG) { 748 printf("%s: adv_scsi_cmd, more than %d dma" 749 " segments\n", 750 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 751 } else { 752 printf("%s: adv_scsi_cmd, error %d loading" 753 " dma map\n", 754 sc->sc_dev.dv_xname, error); 755 } 756 757 xs->error = XS_DRIVER_STUFFUP; 758 adv_free_ccb(sc, ccb); 759 return (COMPLETE); 760 } 761 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 762 ccb->dmamap_xfer->dm_mapsize, 763 (flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 764 BUS_DMASYNC_PREWRITE); 765 766 767 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 768 769 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 770 771 ccb->sghead.sg_list[nsegs].addr = 772 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 773 ccb->sghead.sg_list[nsegs].bytes = 774 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 775 } 776 777 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 778 ccb->dmamap_xfer->dm_nsegs; 779 780 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 781 ccb->scsiq.sg_head = &ccb->sghead; 782 ccb->scsiq.q1.data_addr = 0; 783 ccb->scsiq.q1.data_cnt = 0; 784 } else { 785 /* 786 * No data xfer, use non S/G values. 787 */ 788 ccb->scsiq.q1.data_addr = 0; 789 ccb->scsiq.q1.data_cnt = 0; 790 } 791 792 #ifdef ASC_DEBUG 793 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 794 sc_link->scsipi_scsi.target, 795 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 796 (unsigned long)ccb); 797 #endif 798 s = splbio(); 799 adv_queue_ccb(sc, ccb); 800 splx(s); 801 802 /* 803 * Usually return SUCCESSFULLY QUEUED 804 */ 805 if ((flags & SCSI_POLL) == 0) 806 return (SUCCESSFULLY_QUEUED); 807 808 /* 809 * If we can't use interrupts, poll on completion 810 */ 811 if (adv_poll(sc, xs, ccb->timeout)) { 812 adv_timeout(ccb); 813 if (adv_poll(sc, xs, ccb->timeout)) 814 adv_timeout(ccb); 815 } 816 return (COMPLETE); 817 } 818 819 820 int 821 adv_intr(arg) 822 void *arg; 823 { 824 ASC_SOFTC *sc = arg; 825 struct scsipi_xfer *xs; 826 827 #ifdef ASC_DEBUG 828 int int_pend = FALSE; 829 830 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 831 { 832 int_pend = TRUE; 833 printf("ISR - "); 834 } 835 #endif 836 AscISR(sc); 837 #ifdef ASC_DEBUG 838 if(int_pend) 839 printf("\n"); 840 #endif 841 842 /* 843 * If there are queue entries in the software queue, try to 844 * run the first one. We should be more or less guaranteed 845 * to succeed, since we just freed a CCB. 846 * 847 * NOTE: adv_scsi_cmd() relies on our calling it with 848 * the first entry in the queue. 849 */ 850 if ((xs = TAILQ_FIRST(&sc->sc_queue)) != NULL) 851 (void) adv_scsi_cmd(xs); 852 853 return (1); 854 } 855 856 857 /* 858 * Poll a particular unit, looking for a particular xs 859 */ 860 static int 861 adv_poll(sc, xs, count) 862 ASC_SOFTC *sc; 863 struct scsipi_xfer *xs; 864 int count; 865 { 866 867 /* timeouts are in msec, so we loop in 1000 usec cycles */ 868 while (count) { 869 adv_intr(sc); 870 if (xs->flags & ITSDONE) 871 return (0); 872 delay(1000); /* only happens in boot so ok */ 873 count--; 874 } 875 return (1); 876 } 877 878 879 static void 880 adv_timeout(arg) 881 void *arg; 882 { 883 ADV_CCB *ccb = arg; 884 struct scsipi_xfer *xs = ccb->xs; 885 struct scsipi_link *sc_link = xs->sc_link; 886 ASC_SOFTC *sc = sc_link->adapter_softc; 887 int s; 888 889 scsi_print_addr(sc_link); 890 printf("timed out"); 891 892 s = splbio(); 893 894 /* 895 * If it has been through before, then a previous abort has failed, 896 * don't try abort again, reset the bus instead. 897 */ 898 if (ccb->flags & CCB_ABORT) { 899 /* abort timed out */ 900 printf(" AGAIN. Resetting Bus\n"); 901 /* Lets try resetting the bus! */ 902 if (AscResetBus(sc) == ASC_ERROR) { 903 ccb->timeout = sc->scsi_reset_wait; 904 adv_queue_ccb(sc, ccb); 905 } 906 } else { 907 /* abort the operation that has timed out */ 908 printf("\n"); 909 AscAbortCCB(sc, ccb); 910 ccb->xs->error = XS_TIMEOUT; 911 ccb->timeout = ADV_ABORT_TIMEOUT; 912 ccb->flags |= CCB_ABORT; 913 adv_queue_ccb(sc, ccb); 914 } 915 916 splx(s); 917 } 918 919 920 static void 921 adv_watchdog(arg) 922 void *arg; 923 { 924 ADV_CCB *ccb = arg; 925 struct scsipi_xfer *xs = ccb->xs; 926 struct scsipi_link *sc_link = xs->sc_link; 927 ASC_SOFTC *sc = sc_link->adapter_softc; 928 int s; 929 930 s = splbio(); 931 932 ccb->flags &= ~CCB_WATCHDOG; 933 adv_start_ccbs(sc); 934 935 splx(s); 936 } 937 938 939 /******************************************************************************/ 940 /* NARROW boards Interrupt callbacks */ 941 /******************************************************************************/ 942 943 944 /* 945 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 946 * 947 * Interrupt callback function for the Narrow SCSI Asc Library. 948 */ 949 static void 950 adv_narrow_isr_callback(sc, qdonep) 951 ASC_SOFTC *sc; 952 ASC_QDONE_INFO *qdonep; 953 { 954 bus_dma_tag_t dmat = sc->sc_dmat; 955 ADV_CCB *ccb; 956 struct scsipi_xfer *xs; 957 struct scsipi_sense_data *s1, *s2; 958 959 960 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 961 xs = ccb->xs; 962 963 #ifdef ASC_DEBUG 964 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 965 (unsigned long)ccb, 966 xs->sc_link->scsipi_scsi.target, 967 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 968 #endif 969 untimeout(adv_timeout, ccb); 970 971 /* 972 * If we were a data transfer, unload the map that described 973 * the data buffer. 974 */ 975 if (xs->datalen) { 976 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 977 ccb->dmamap_xfer->dm_mapsize, 978 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 979 BUS_DMASYNC_POSTWRITE); 980 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 981 } 982 if ((ccb->flags & CCB_ALLOC) == 0) { 983 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 984 Debugger(); 985 return; 986 } 987 /* 988 * 'qdonep' contains the command's ending status. 989 */ 990 #ifdef ASC_DEBUG 991 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 992 #endif 993 switch (qdonep->d3.done_stat) { 994 case ASC_QD_NO_ERROR: 995 switch (qdonep->d3.host_stat) { 996 case ASC_QHSTA_NO_ERROR: 997 xs->error = XS_NOERROR; 998 xs->resid = 0; 999 break; 1000 1001 default: 1002 /* QHSTA error occurred */ 1003 xs->error = XS_DRIVER_STUFFUP; 1004 break; 1005 } 1006 1007 /* 1008 * If an INQUIRY command completed successfully, then call 1009 * the AscInquiryHandling() function to patch bugged boards. 1010 */ 1011 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 1012 (xs->sc_link->scsipi_scsi.lun == 0) && 1013 (xs->datalen - qdonep->remain_bytes) >= 8) { 1014 AscInquiryHandling(sc, 1015 xs->sc_link->scsipi_scsi.target & 0x7, 1016 (ASC_SCSI_INQUIRY *) xs->data); 1017 } 1018 break; 1019 1020 case ASC_QD_WITH_ERROR: 1021 switch (qdonep->d3.host_stat) { 1022 case ASC_QHSTA_NO_ERROR: 1023 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 1024 s1 = &ccb->scsi_sense; 1025 s2 = &xs->sense.scsi_sense; 1026 *s2 = *s1; 1027 xs->error = XS_SENSE; 1028 } else { 1029 xs->error = XS_DRIVER_STUFFUP; 1030 } 1031 break; 1032 1033 default: 1034 /* QHSTA error occurred */ 1035 xs->error = XS_DRIVER_STUFFUP; 1036 break; 1037 } 1038 break; 1039 1040 case ASC_QD_ABORTED_BY_HOST: 1041 default: 1042 xs->error = XS_DRIVER_STUFFUP; 1043 break; 1044 } 1045 1046 1047 adv_free_ccb(sc, ccb); 1048 xs->flags |= ITSDONE; 1049 scsipi_done(xs); 1050 } 1051
Indexes created Mon Sep 22 13:09:51 GMT 2025