adv.c revision 1.12
1 /* $NetBSD: adv.c,v 1.12 1999/06/06 17:33:18 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 /* Control Blocks routines */ 115 /******************************************************************************/ 116 117 118 static int 119 adv_alloc_ccbs(sc) 120 ASC_SOFTC *sc; 121 { 122 bus_dma_segment_t seg; 123 int error, rseg; 124 125 /* 126 * Allocate the control blocks. 127 */ 128 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), 129 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 130 printf("%s: unable to allocate control structures," 131 " error = %d\n", sc->sc_dev.dv_xname, error); 132 return (error); 133 } 134 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 135 sizeof(struct adv_control), (caddr_t *) & sc->sc_control, 136 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 137 printf("%s: unable to map control structures, error = %d\n", 138 sc->sc_dev.dv_xname, error); 139 return (error); 140 } 141 /* 142 * Create and load the DMA map used for the control blocks. 143 */ 144 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), 145 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, 146 &sc->sc_dmamap_control)) != 0) { 147 printf("%s: unable to create control DMA map, error = %d\n", 148 sc->sc_dev.dv_xname, error); 149 return (error); 150 } 151 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 152 sc->sc_control, sizeof(struct adv_control), NULL, 153 BUS_DMA_NOWAIT)) != 0) { 154 printf("%s: unable to load control DMA map, error = %d\n", 155 sc->sc_dev.dv_xname, error); 156 return (error); 157 } 158 return (0); 159 } 160 161 162 /* 163 * Create a set of ccbs and add them to the free list. Called once 164 * by adv_init(). We return the number of CCBs successfully created. 165 */ 166 static int 167 adv_create_ccbs(sc, ccbstore, count) 168 ASC_SOFTC *sc; 169 ADV_CCB *ccbstore; 170 int count; 171 { 172 ADV_CCB *ccb; 173 int i, error; 174 175 bzero(ccbstore, sizeof(ADV_CCB) * count); 176 for (i = 0; i < count; i++) { 177 ccb = &ccbstore[i]; 178 if ((error = adv_init_ccb(sc, ccb)) != 0) { 179 printf("%s: unable to initialize ccb, error = %d\n", 180 sc->sc_dev.dv_xname, error); 181 return (i); 182 } 183 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 184 } 185 186 return (i); 187 } 188 189 190 /* 191 * A ccb is put onto the free list. 192 */ 193 static void 194 adv_free_ccb(sc, ccb) 195 ASC_SOFTC *sc; 196 ADV_CCB *ccb; 197 { 198 int s; 199 200 s = splbio(); 201 202 adv_reset_ccb(ccb); 203 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 204 205 /* 206 * If there were none, wake anybody waiting for one to come free, 207 * starting with queued entries. 208 */ 209 if (ccb->chain.tqe_next == 0) 210 wakeup(&sc->sc_free_ccb); 211 212 splx(s); 213 } 214 215 216 static void 217 adv_reset_ccb(ccb) 218 ADV_CCB *ccb; 219 { 220 221 ccb->flags = 0; 222 } 223 224 225 static int 226 adv_init_ccb(sc, ccb) 227 ASC_SOFTC *sc; 228 ADV_CCB *ccb; 229 { 230 int hashnum, error; 231 232 /* 233 * Create the DMA map for this CCB. 234 */ 235 error = bus_dmamap_create(sc->sc_dmat, 236 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 237 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, 238 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 239 if (error) { 240 printf("%s: unable to create DMA map, error = %d\n", 241 sc->sc_dev.dv_xname, error); 242 return (error); 243 } 244 245 /* 246 * put in the phystokv hash table 247 * Never gets taken out. 248 */ 249 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 250 ADV_CCB_OFF(ccb); 251 hashnum = CCB_HASH(ccb->hashkey); 252 ccb->nexthash = sc->sc_ccbhash[hashnum]; 253 sc->sc_ccbhash[hashnum] = ccb; 254 255 adv_reset_ccb(ccb); 256 return (0); 257 } 258 259 260 /* 261 * Get a free ccb 262 * 263 * If there are none, see if we can allocate a new one 264 */ 265 static ADV_CCB * 266 adv_get_ccb(sc, flags) 267 ASC_SOFTC *sc; 268 int flags; 269 { 270 ADV_CCB *ccb = 0; 271 int s; 272 273 s = splbio(); 274 275 /* 276 * If we can and have to, sleep waiting for one to come free 277 * but only if we can't allocate a new one. 278 */ 279 for (;;) { 280 ccb = sc->sc_free_ccb.tqh_first; 281 if (ccb) { 282 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 283 break; 284 } 285 if ((flags & SCSI_NOSLEEP) != 0) 286 goto out; 287 288 tsleep(&sc->sc_free_ccb, PRIBIO, "advccb", 0); 289 } 290 291 ccb->flags |= CCB_ALLOC; 292 293 out: 294 splx(s); 295 return (ccb); 296 } 297 298 299 /* 300 * Given a physical address, find the ccb that it corresponds to. 301 */ 302 ADV_CCB * 303 adv_ccb_phys_kv(sc, ccb_phys) 304 ASC_SOFTC *sc; 305 u_long ccb_phys; 306 { 307 int hashnum = CCB_HASH(ccb_phys); 308 ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; 309 310 while (ccb) { 311 if (ccb->hashkey == ccb_phys) 312 break; 313 ccb = ccb->nexthash; 314 } 315 return (ccb); 316 } 317 318 319 /* 320 * Queue a CCB to be sent to the controller, and send it if possible. 321 */ 322 static void 323 adv_queue_ccb(sc, ccb) 324 ASC_SOFTC *sc; 325 ADV_CCB *ccb; 326 { 327 328 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 329 330 adv_start_ccbs(sc); 331 } 332 333 334 static void 335 adv_start_ccbs(sc) 336 ASC_SOFTC *sc; 337 { 338 ADV_CCB *ccb; 339 340 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 341 if (ccb->flags & CCB_WATCHDOG) 342 untimeout(adv_watchdog, ccb); 343 344 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 345 ccb->flags |= CCB_WATCHDOG; 346 timeout(adv_watchdog, ccb, 347 (ADV_WATCH_TIMEOUT * hz) / 1000); 348 break; 349 } 350 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 351 352 if ((ccb->xs->flags & SCSI_POLL) == 0) 353 timeout(adv_timeout, ccb, (ccb->timeout * hz) / 1000); 354 } 355 } 356 357 358 /******************************************************************************/ 359 /* DMA able memory allocation routines */ 360 /******************************************************************************/ 361 362 363 /* 364 * Allocate a DMA able memory for overrun_buffer. 365 * This memory can be safely shared among all the AdvanSys boards. 366 */ 367 u_int8_t * 368 adv_alloc_overrunbuf(dvname, dmat) 369 char *dvname; 370 bus_dma_tag_t dmat; 371 { 372 static u_int8_t *overrunbuf = NULL; 373 374 bus_dmamap_t ovrbuf_dmamap; 375 bus_dma_segment_t seg; 376 int rseg, error; 377 378 379 /* 380 * if an overrun buffer has been already allocated don't allocate it 381 * again. Instead return the address of the allocated buffer. 382 */ 383 if (overrunbuf) 384 return (overrunbuf); 385 386 387 if ((error = bus_dmamem_alloc(dmat, ASC_OVERRUN_BSIZE, 388 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 389 printf("%s: unable to allocate overrun buffer, error = %d\n", 390 dvname, error); 391 return (0); 392 } 393 if ((error = bus_dmamem_map(dmat, &seg, rseg, ASC_OVERRUN_BSIZE, 394 (caddr_t *) & overrunbuf, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 395 printf("%s: unable to map overrun buffer, error = %d\n", 396 dvname, error); 397 398 bus_dmamem_free(dmat, &seg, 1); 399 return (0); 400 } 401 if ((error = bus_dmamap_create(dmat, ASC_OVERRUN_BSIZE, 1, 402 ASC_OVERRUN_BSIZE, 0, BUS_DMA_NOWAIT, &ovrbuf_dmamap)) != 0) { 403 printf("%s: unable to create overrun buffer DMA map," 404 " error = %d\n", dvname, error); 405 406 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 407 bus_dmamem_free(dmat, &seg, 1); 408 return (0); 409 } 410 if ((error = bus_dmamap_load(dmat, ovrbuf_dmamap, overrunbuf, 411 ASC_OVERRUN_BSIZE, NULL, BUS_DMA_NOWAIT)) != 0) { 412 printf("%s: unable to load overrun buffer DMA map," 413 " error = %d\n", dvname, error); 414 415 bus_dmamap_destroy(dmat, ovrbuf_dmamap); 416 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 417 bus_dmamem_free(dmat, &seg, 1); 418 return (0); 419 } 420 return (overrunbuf); 421 } 422 423 424 /******************************************************************************/ 425 /* SCSI layer interfacing routines */ 426 /******************************************************************************/ 427 428 429 int 430 adv_init(sc) 431 ASC_SOFTC *sc; 432 { 433 int warn; 434 435 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { 436 printf("adv_init: failed to find signature\n"); 437 return (1); 438 } 439 440 /* 441 * Read the board configuration 442 */ 443 AscInitASC_SOFTC(sc); 444 warn = AscInitFromEEP(sc); 445 if (warn) { 446 printf("%s -get: ", sc->sc_dev.dv_xname); 447 switch (warn) { 448 case -1: 449 printf("Chip is not halted\n"); 450 break; 451 452 case -2: 453 printf("Couldn't get MicroCode Start" 454 " address\n"); 455 break; 456 457 case ASC_WARN_IO_PORT_ROTATE: 458 printf("I/O port address modified\n"); 459 break; 460 461 case ASC_WARN_AUTO_CONFIG: 462 printf("I/O port increment switch enabled\n"); 463 break; 464 465 case ASC_WARN_EEPROM_CHKSUM: 466 printf("EEPROM checksum error\n"); 467 break; 468 469 case ASC_WARN_IRQ_MODIFIED: 470 printf("IRQ modified\n"); 471 break; 472 473 case ASC_WARN_CMD_QNG_CONFLICT: 474 printf("tag queuing enabled w/o disconnects\n"); 475 break; 476 477 default: 478 printf("unknown warning %d\n", warn); 479 } 480 } 481 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 482 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 483 484 /* 485 * Modify the board configuration 486 */ 487 warn = AscInitFromASC_SOFTC(sc); 488 if (warn) { 489 printf("%s -set: ", sc->sc_dev.dv_xname); 490 switch (warn) { 491 case ASC_WARN_CMD_QNG_CONFLICT: 492 printf("tag queuing enabled w/o disconnects\n"); 493 break; 494 495 case ASC_WARN_AUTO_CONFIG: 496 printf("I/O port increment switch enabled\n"); 497 break; 498 499 default: 500 printf("unknown warning %d\n", warn); 501 } 502 } 503 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; 504 505 if (!(sc->overrun_buf = adv_alloc_overrunbuf(sc->sc_dev.dv_xname, 506 sc->sc_dmat))) { 507 panic("adv_init: adv_alloc_overrunbuf failed"); 508 } 509 510 return (0); 511 } 512 513 514 void 515 adv_attach(sc) 516 ASC_SOFTC *sc; 517 { 518 int i, error; 519 520 /* 521 * Initialize board RISC chip and enable interrupts. 522 */ 523 switch (AscInitDriver(sc)) { 524 case 0: 525 /* AllOK */ 526 break; 527 528 case 1: 529 panic("%s: bad signature", sc->sc_dev.dv_xname); 530 break; 531 532 case 2: 533 panic("%s: unable to load MicroCode", 534 sc->sc_dev.dv_xname); 535 break; 536 537 case 3: 538 panic("%s: unable to initialize MicroCode", 539 sc->sc_dev.dv_xname); 540 break; 541 542 default: 543 panic("%s: unable to initialize board RISC chip", 544 sc->sc_dev.dv_xname); 545 } 546 547 /* 548 * Fill in the adapter. 549 */ 550 sc->sc_adapter.scsipi_cmd = adv_scsi_cmd; 551 sc->sc_adapter.scsipi_minphys = advminphys; 552 553 /* 554 * fill in the prototype scsipi_link. 555 */ 556 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 557 sc->sc_link.adapter_softc = sc; 558 sc->sc_link.scsipi_scsi.adapter_target = sc->chip_scsi_id; 559 sc->sc_link.adapter = &sc->sc_adapter; 560 sc->sc_link.device = &adv_dev; 561 sc->sc_link.openings = 4; 562 sc->sc_link.scsipi_scsi.max_target = 7; 563 sc->sc_link.scsipi_scsi.max_lun = 7; 564 sc->sc_link.type = BUS_SCSI; 565 566 567 TAILQ_INIT(&sc->sc_free_ccb); 568 TAILQ_INIT(&sc->sc_waiting_ccb); 569 TAILQ_INIT(&sc->sc_queue); 570 571 572 /* 573 * Allocate the Control Blocks. 574 */ 575 error = adv_alloc_ccbs(sc); 576 if (error) 577 return; /* (error) */ 578 579 /* 580 * Create and initialize the Control Blocks. 581 */ 582 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 583 if (i == 0) { 584 printf("%s: unable to create control blocks\n", 585 sc->sc_dev.dv_xname); 586 return; /* (ENOMEM) */ ; 587 } else if (i != ADV_MAX_CCB) { 588 printf("%s: WARNING: only %d of %d control blocks created\n", 589 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 590 } 591 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 592 } 593 594 595 static void 596 advminphys(bp) 597 struct buf *bp; 598 { 599 600 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 601 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 602 minphys(bp); 603 } 604 605 606 /* 607 * start a scsi operation given the command and the data address. Also needs 608 * the unit, target and lu. 609 */ 610 static int 611 adv_scsi_cmd(xs) 612 struct scsipi_xfer *xs; 613 { 614 struct scsipi_link *sc_link = xs->sc_link; 615 ASC_SOFTC *sc = sc_link->adapter_softc; 616 bus_dma_tag_t dmat = sc->sc_dmat; 617 ADV_CCB *ccb; 618 int s, flags, error, nsegs; 619 int fromqueue = 1, dontqueue = 0; 620 621 622 s = splbio(); /* protect the queue */ 623 624 /* 625 * If we're running the queue from adv_done(), we've been 626 * called with the first queue entry as our argument. 627 */ 628 if (xs == TAILQ_FIRST(&sc->sc_queue)) { 629 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 630 fromqueue = 1; 631 } else { 632 633 /* Polled requests can't be queued for later. */ 634 dontqueue = xs->flags & SCSI_POLL; 635 636 /* 637 * If there are jobs in the queue, run them first. 638 */ 639 if (TAILQ_FIRST(&sc->sc_queue) != NULL) { 640 /* 641 * If we can't queue, we have to abort, since 642 * we have to preserve order. 643 */ 644 if (dontqueue) { 645 splx(s); 646 xs->error = XS_DRIVER_STUFFUP; 647 return (TRY_AGAIN_LATER); 648 } 649 /* 650 * Swap with the first queue entry. 651 */ 652 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 653 xs = TAILQ_FIRST(&sc->sc_queue); 654 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 655 fromqueue = 1; 656 } 657 } 658 659 660 /* 661 * get a ccb to use. If the transfer 662 * is from a buf (possibly from interrupt time) 663 * then we can't allow it to sleep 664 */ 665 666 flags = xs->flags; 667 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 668 /* 669 * If we can't queue, we lose. 670 */ 671 if (dontqueue) { 672 splx(s); 673 xs->error = XS_DRIVER_STUFFUP; 674 return (TRY_AGAIN_LATER); 675 } 676 /* 677 * Stuff ourselves into the queue, in front 678 * if we came off in the first place. 679 */ 680 if (fromqueue) 681 TAILQ_INSERT_HEAD(&sc->sc_queue, xs, adapter_q); 682 else 683 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 684 splx(s); 685 return (SUCCESSFULLY_QUEUED); 686 } 687 splx(s); /* done playing with the queue */ 688 689 ccb->xs = xs; 690 ccb->timeout = xs->timeout; 691 692 /* 693 * Build up the request 694 */ 695 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 696 697 ccb->scsiq.q2.ccb_ptr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 698 ADV_CCB_OFF(ccb); 699 700 ccb->scsiq.cdbptr = &xs->cmd->opcode; 701 ccb->scsiq.q2.cdb_len = xs->cmdlen; 702 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 703 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 704 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 705 sc_link->scsipi_scsi.lun); 706 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 707 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 708 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 709 710 /* 711 * If there are any outstanding requests for the current target, 712 * then every 255th request send an ORDERED request. This heuristic 713 * tries to retain the benefit of request sorting while preventing 714 * request starvation. 255 is the max number of tags or pending commands 715 * a device may have outstanding. 716 */ 717 sc->reqcnt[sc_link->scsipi_scsi.target]++; 718 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 719 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 720 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 721 } else { 722 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 723 } 724 725 726 if (xs->datalen) { 727 /* 728 * Map the DMA transfer. 729 */ 730 #ifdef TFS 731 if (flags & SCSI_DATA_UIO) { 732 error = bus_dmamap_load_uio(dmat, 733 ccb->dmamap_xfer, (struct uio *) xs->data, 734 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 735 } else 736 #endif /* TFS */ 737 { 738 error = bus_dmamap_load(dmat, 739 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 740 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 741 } 742 743 if (error) { 744 if (error == EFBIG) { 745 printf("%s: adv_scsi_cmd, more than %d dma" 746 " segments\n", 747 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 748 } else { 749 printf("%s: adv_scsi_cmd, error %d loading" 750 " dma map\n", 751 sc->sc_dev.dv_xname, error); 752 } 753 754 xs->error = XS_DRIVER_STUFFUP; 755 adv_free_ccb(sc, ccb); 756 return (COMPLETE); 757 } 758 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 759 ccb->dmamap_xfer->dm_mapsize, 760 (flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 761 BUS_DMASYNC_PREWRITE); 762 763 764 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 765 766 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 767 768 ccb->sghead.sg_list[nsegs].addr = 769 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 770 ccb->sghead.sg_list[nsegs].bytes = 771 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 772 } 773 774 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 775 ccb->dmamap_xfer->dm_nsegs; 776 777 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 778 ccb->scsiq.sg_head = &ccb->sghead; 779 ccb->scsiq.q1.data_addr = 0; 780 ccb->scsiq.q1.data_cnt = 0; 781 } else { 782 /* 783 * No data xfer, use non S/G values. 784 */ 785 ccb->scsiq.q1.data_addr = 0; 786 ccb->scsiq.q1.data_cnt = 0; 787 } 788 789 #ifdef ASC_DEBUG 790 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 791 sc_link->scsipi_scsi.target, 792 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 793 (unsigned long)ccb); 794 #endif 795 s = splbio(); 796 adv_queue_ccb(sc, ccb); 797 splx(s); 798 799 /* 800 * Usually return SUCCESSFULLY QUEUED 801 */ 802 if ((flags & SCSI_POLL) == 0) 803 return (SUCCESSFULLY_QUEUED); 804 805 /* 806 * If we can't use interrupts, poll on completion 807 */ 808 if (adv_poll(sc, xs, ccb->timeout)) { 809 adv_timeout(ccb); 810 if (adv_poll(sc, xs, ccb->timeout)) 811 adv_timeout(ccb); 812 } 813 return (COMPLETE); 814 } 815 816 817 int 818 adv_intr(arg) 819 void *arg; 820 { 821 ASC_SOFTC *sc = arg; 822 struct scsipi_xfer *xs; 823 824 #ifdef ASC_DEBUG 825 int int_pend = FALSE; 826 827 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 828 { 829 int_pend = TRUE; 830 printf("ISR - "); 831 } 832 #endif 833 AscISR(sc); 834 #ifdef ASC_DEBUG 835 if(int_pend) 836 printf("\n"); 837 #endif 838 839 /* 840 * If there are queue entries in the software queue, try to 841 * run the first one. We should be more or less guaranteed 842 * to succeed, since we just freed a CCB. 843 * 844 * NOTE: adv_scsi_cmd() relies on our calling it with 845 * the first entry in the queue. 846 */ 847 if ((xs = TAILQ_FIRST(&sc->sc_queue)) != NULL) 848 (void) adv_scsi_cmd(xs); 849 850 return (1); 851 } 852 853 854 /* 855 * Poll a particular unit, looking for a particular xs 856 */ 857 static int 858 adv_poll(sc, xs, count) 859 ASC_SOFTC *sc; 860 struct scsipi_xfer *xs; 861 int count; 862 { 863 864 /* timeouts are in msec, so we loop in 1000 usec cycles */ 865 while (count) { 866 adv_intr(sc); 867 if (xs->flags & ITSDONE) 868 return (0); 869 delay(1000); /* only happens in boot so ok */ 870 count--; 871 } 872 return (1); 873 } 874 875 876 static void 877 adv_timeout(arg) 878 void *arg; 879 { 880 ADV_CCB *ccb = arg; 881 struct scsipi_xfer *xs = ccb->xs; 882 struct scsipi_link *sc_link = xs->sc_link; 883 ASC_SOFTC *sc = sc_link->adapter_softc; 884 int s; 885 886 scsi_print_addr(sc_link); 887 printf("timed out"); 888 889 s = splbio(); 890 891 /* 892 * If it has been through before, then a previous abort has failed, 893 * don't try abort again, reset the bus instead. 894 */ 895 if (ccb->flags & CCB_ABORT) { 896 /* abort timed out */ 897 printf(" AGAIN. Resetting Bus\n"); 898 /* Lets try resetting the bus! */ 899 if (AscResetBus(sc) == ASC_ERROR) { 900 ccb->timeout = sc->scsi_reset_wait; 901 adv_queue_ccb(sc, ccb); 902 } 903 } else { 904 /* abort the operation that has timed out */ 905 printf("\n"); 906 AscAbortCCB(sc, ccb); 907 ccb->xs->error = XS_TIMEOUT; 908 ccb->timeout = ADV_ABORT_TIMEOUT; 909 ccb->flags |= CCB_ABORT; 910 adv_queue_ccb(sc, ccb); 911 } 912 913 splx(s); 914 } 915 916 917 static void 918 adv_watchdog(arg) 919 void *arg; 920 { 921 ADV_CCB *ccb = arg; 922 struct scsipi_xfer *xs = ccb->xs; 923 struct scsipi_link *sc_link = xs->sc_link; 924 ASC_SOFTC *sc = sc_link->adapter_softc; 925 int s; 926 927 s = splbio(); 928 929 ccb->flags &= ~CCB_WATCHDOG; 930 adv_start_ccbs(sc); 931 932 splx(s); 933 } 934 935 936 /******************************************************************************/ 937 /* NARROW boards Interrupt callbacks */ 938 /******************************************************************************/ 939 940 941 /* 942 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 943 * 944 * Interrupt callback function for the Narrow SCSI Asc Library. 945 */ 946 static void 947 adv_narrow_isr_callback(sc, qdonep) 948 ASC_SOFTC *sc; 949 ASC_QDONE_INFO *qdonep; 950 { 951 bus_dma_tag_t dmat = sc->sc_dmat; 952 ADV_CCB *ccb; 953 struct scsipi_xfer *xs; 954 struct scsipi_sense_data *s1, *s2; 955 956 957 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); 958 xs = ccb->xs; 959 960 #ifdef ASC_DEBUG 961 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 962 (unsigned long)ccb, 963 xs->sc_link->scsipi_scsi.target, 964 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 965 #endif 966 untimeout(adv_timeout, ccb); 967 968 /* 969 * If we were a data transfer, unload the map that described 970 * the data buffer. 971 */ 972 if (xs->datalen) { 973 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 974 ccb->dmamap_xfer->dm_mapsize, 975 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 976 BUS_DMASYNC_POSTWRITE); 977 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 978 } 979 if ((ccb->flags & CCB_ALLOC) == 0) { 980 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 981 Debugger(); 982 return; 983 } 984 /* 985 * 'qdonep' contains the command's ending status. 986 */ 987 #ifdef ASC_DEBUG 988 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 989 #endif 990 switch (qdonep->d3.done_stat) { 991 case ASC_QD_NO_ERROR: 992 switch (qdonep->d3.host_stat) { 993 case ASC_QHSTA_NO_ERROR: 994 xs->error = XS_NOERROR; 995 xs->resid = 0; 996 break; 997 998 default: 999 /* QHSTA error occurred */ 1000 xs->error = XS_DRIVER_STUFFUP; 1001 break; 1002 } 1003 1004 /* 1005 * If an INQUIRY command completed successfully, then call 1006 * the AscInquiryHandling() function to patch bugged boards. 1007 */ 1008 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 1009 (xs->sc_link->scsipi_scsi.lun == 0) && 1010 (xs->datalen - qdonep->remain_bytes) >= 8) { 1011 AscInquiryHandling(sc, 1012 xs->sc_link->scsipi_scsi.target & 0x7, 1013 (ASC_SCSI_INQUIRY *) xs->data); 1014 } 1015 break; 1016 1017 case ASC_QD_WITH_ERROR: 1018 switch (qdonep->d3.host_stat) { 1019 case ASC_QHSTA_NO_ERROR: 1020 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 1021 s1 = &ccb->scsi_sense; 1022 s2 = &xs->sense.scsi_sense; 1023 *s2 = *s1; 1024 xs->error = XS_SENSE; 1025 } else { 1026 xs->error = XS_DRIVER_STUFFUP; 1027 } 1028 break; 1029 1030 default: 1031 /* QHSTA error occurred */ 1032 xs->error = XS_DRIVER_STUFFUP; 1033 break; 1034 } 1035 break; 1036 1037 case ASC_QD_ABORTED_BY_HOST: 1038 default: 1039 xs->error = XS_DRIVER_STUFFUP; 1040 break; 1041 } 1042 1043 1044 adv_free_ccb(sc, ccb); 1045 xs->flags |= ITSDONE; 1046 scsipi_done(xs); 1047 } 1048
Indexes created Sun Sep 21 20:09:37 GMT 2025