1 /* $NetBSD: adv.c,v 1.9 1998/12/09 08:47:17 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@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 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 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 adv_reset_ccb(ccb); 250 return (0); 251 } 252 253 254 /* 255 * Get a free ccb 256 * 257 * If there are none, see if we can allocate a new one 258 */ 259 static ADV_CCB * 260 adv_get_ccb(sc, flags) 261 ASC_SOFTC *sc; 262 int flags; 263 { 264 ADV_CCB *ccb = 0; 265 int s; 266 267 s = splbio(); 268 269 /* 270 * If we can and have to, sleep waiting for one to come free 271 * but only if we can't allocate a new one. 272 */ 273 for (;;) { 274 ccb = sc->sc_free_ccb.tqh_first; 275 if (ccb) { 276 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 277 break; 278 } 279 if ((flags & SCSI_NOSLEEP) != 0) 280 goto out; 281 282 tsleep(&sc->sc_free_ccb, PRIBIO, "advccb", 0); 283 } 284 285 ccb->flags |= CCB_ALLOC; 286 287 out: 288 splx(s); 289 return (ccb); 290 } 291 292 293 /* 294 * Queue a CCB to be sent to the controller, and send it if possible. 295 */ 296 static void 297 adv_queue_ccb(sc, ccb) 298 ASC_SOFTC *sc; 299 ADV_CCB *ccb; 300 { 301 302 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 303 304 adv_start_ccbs(sc); 305 } 306 307 308 static void 309 adv_start_ccbs(sc) 310 ASC_SOFTC *sc; 311 { 312 ADV_CCB *ccb; 313 314 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 315 if (ccb->flags & CCB_WATCHDOG) 316 untimeout(adv_watchdog, ccb); 317 318 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { 319 ccb->flags |= CCB_WATCHDOG; 320 timeout(adv_watchdog, ccb, 321 (ADV_WATCH_TIMEOUT * hz) / 1000); 322 break; 323 } 324 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 325 326 if ((ccb->xs->flags & SCSI_POLL) == 0) 327 timeout(adv_timeout, ccb, (ccb->timeout * hz) / 1000); 328 } 329 } 330 331 332 /******************************************************************************/ 333 /* DMA able memory allocation routines */ 334 /******************************************************************************/ 335 336 337 /* 338 * Allocate a DMA able memory for overrun_buffer. 339 * This memory can be safely shared among all the AdvanSys boards. 340 */ 341 u_int8_t * 342 adv_alloc_overrunbuf(dvname, dmat) 343 char *dvname; 344 bus_dma_tag_t dmat; 345 { 346 static u_int8_t *overrunbuf = NULL; 347 348 bus_dmamap_t ovrbuf_dmamap; 349 bus_dma_segment_t seg; 350 int rseg, error; 351 352 353 /* 354 * if an overrun buffer has been already allocated don't allocate it 355 * again. Instead return the address of the allocated buffer. 356 */ 357 if (overrunbuf) 358 return (overrunbuf); 359 360 361 if ((error = bus_dmamem_alloc(dmat, ASC_OVERRUN_BSIZE, 362 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 363 printf("%s: unable to allocate overrun buffer, error = %d\n", 364 dvname, error); 365 return (0); 366 } 367 if ((error = bus_dmamem_map(dmat, &seg, rseg, ASC_OVERRUN_BSIZE, 368 (caddr_t *) & overrunbuf, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 369 printf("%s: unable to map overrun buffer, error = %d\n", 370 dvname, error); 371 372 bus_dmamem_free(dmat, &seg, 1); 373 return (0); 374 } 375 if ((error = bus_dmamap_create(dmat, ASC_OVERRUN_BSIZE, 1, 376 ASC_OVERRUN_BSIZE, 0, BUS_DMA_NOWAIT, &ovrbuf_dmamap)) != 0) { 377 printf("%s: unable to create overrun buffer DMA map," 378 " error = %d\n", dvname, error); 379 380 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 381 bus_dmamem_free(dmat, &seg, 1); 382 return (0); 383 } 384 if ((error = bus_dmamap_load(dmat, ovrbuf_dmamap, overrunbuf, 385 ASC_OVERRUN_BSIZE, NULL, BUS_DMA_NOWAIT)) != 0) { 386 printf("%s: unable to load overrun buffer DMA map," 387 " error = %d\n", dvname, error); 388 389 bus_dmamap_destroy(dmat, ovrbuf_dmamap); 390 bus_dmamem_unmap(dmat, overrunbuf, ASC_OVERRUN_BSIZE); 391 bus_dmamem_free(dmat, &seg, 1); 392 return (0); 393 } 394 return (overrunbuf); 395 } 396 397 398 /******************************************************************************/ 399 /* SCSI layer interfacing routines */ 400 /******************************************************************************/ 401 402 403 int 404 adv_init(sc) 405 ASC_SOFTC *sc; 406 { 407 int warn; 408 409 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) 410 panic("adv_init: adv_find_signature failed"); 411 412 /* 413 * Read the board configuration 414 */ 415 AscInitASC_SOFTC(sc); 416 warn = AscInitFromEEP(sc); 417 if (warn) { 418 printf("%s -get: ", sc->sc_dev.dv_xname); 419 switch (warn) { 420 case -1: 421 printf("Chip is not halted\n"); 422 break; 423 424 case -2: 425 printf("Couldn't get MicroCode Start" 426 " address\n"); 427 break; 428 429 case ASC_WARN_IO_PORT_ROTATE: 430 printf("I/O port address modified\n"); 431 break; 432 433 case ASC_WARN_AUTO_CONFIG: 434 printf("I/O port increment switch enabled\n"); 435 break; 436 437 case ASC_WARN_EEPROM_CHKSUM: 438 printf("EEPROM checksum error\n"); 439 break; 440 441 case ASC_WARN_IRQ_MODIFIED: 442 printf("IRQ modified\n"); 443 break; 444 445 case ASC_WARN_CMD_QNG_CONFLICT: 446 printf("tag queuing enabled w/o disconnects\n"); 447 break; 448 449 default: 450 printf("unknown warning %d\n", warn); 451 } 452 } 453 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) 454 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; 455 456 /* 457 * Modify the board configuration 458 */ 459 warn = AscInitFromASC_SOFTC(sc); 460 if (warn) { 461 printf("%s -set: ", sc->sc_dev.dv_xname); 462 switch (warn) { 463 case ASC_WARN_CMD_QNG_CONFLICT: 464 printf("tag queuing enabled w/o disconnects\n"); 465 break; 466 467 case ASC_WARN_AUTO_CONFIG: 468 printf("I/O port increment switch enabled\n"); 469 break; 470 471 default: 472 printf("unknown warning %d\n", warn); 473 } 474 } 475 sc->isr_callback = (ulong) adv_narrow_isr_callback; 476 477 if (!(sc->overrun_buf = adv_alloc_overrunbuf(sc->sc_dev.dv_xname, 478 sc->sc_dmat))) { 479 return (1); 480 } 481 482 return (0); 483 } 484 485 486 void 487 adv_attach(sc) 488 ASC_SOFTC *sc; 489 { 490 int i, error; 491 492 /* 493 * Initialize board RISC chip and enable interrupts. 494 */ 495 switch (AscInitDriver(sc)) { 496 case 0: 497 /* AllOK */ 498 break; 499 500 case 1: 501 panic("%s: bad signature", sc->sc_dev.dv_xname); 502 break; 503 504 case 2: 505 panic("%s: unable to load MicroCode", 506 sc->sc_dev.dv_xname); 507 break; 508 509 case 3: 510 panic("%s: unable to initialize MicroCode", 511 sc->sc_dev.dv_xname); 512 break; 513 514 default: 515 panic("%s: unable to initialize board RISC chip", 516 sc->sc_dev.dv_xname); 517 } 518 519 /* 520 * Fill in the adapter. 521 */ 522 sc->sc_adapter.scsipi_cmd = adv_scsi_cmd; 523 sc->sc_adapter.scsipi_minphys = advminphys; 524 525 /* 526 * fill in the prototype scsipi_link. 527 */ 528 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 529 sc->sc_link.adapter_softc = sc; 530 sc->sc_link.scsipi_scsi.adapter_target = sc->chip_scsi_id; 531 sc->sc_link.adapter = &sc->sc_adapter; 532 sc->sc_link.device = &adv_dev; 533 sc->sc_link.openings = 4; 534 sc->sc_link.scsipi_scsi.max_target = 7; 535 sc->sc_link.scsipi_scsi.max_lun = 7; 536 sc->sc_link.type = BUS_SCSI; 537 538 539 TAILQ_INIT(&sc->sc_free_ccb); 540 TAILQ_INIT(&sc->sc_waiting_ccb); 541 TAILQ_INIT(&sc->sc_queue); 542 543 544 /* 545 * Allocate the Control Blocks. 546 */ 547 error = adv_alloc_ccbs(sc); 548 if (error) 549 return; /* (error) */ ; 550 551 /* 552 * Create and initialize the Control Blocks. 553 */ 554 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); 555 if (i == 0) { 556 printf("%s: unable to create control blocks\n", 557 sc->sc_dev.dv_xname); 558 return; /* (ENOMEM) */ ; 559 } else if (i != ADV_MAX_CCB) { 560 printf("%s: WARNING: only %d of %d control blocks created\n", 561 sc->sc_dev.dv_xname, i, ADV_MAX_CCB); 562 } 563 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 564 } 565 566 567 static void 568 advminphys(bp) 569 struct buf *bp; 570 { 571 572 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) 573 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); 574 minphys(bp); 575 } 576 577 578 /* 579 * start a scsi operation given the command and the data address. Also needs 580 * the unit, target and lu. 581 */ 582 static int 583 adv_scsi_cmd(xs) 584 struct scsipi_xfer *xs; 585 { 586 struct scsipi_link *sc_link = xs->sc_link; 587 ASC_SOFTC *sc = sc_link->adapter_softc; 588 bus_dma_tag_t dmat = sc->sc_dmat; 589 ADV_CCB *ccb; 590 int s, flags, error, nsegs; 591 int fromqueue = 1, dontqueue = 0; 592 593 594 s = splbio(); /* protect the queue */ 595 596 /* 597 * If we're running the queue from adv_done(), we've been 598 * called with the first queue entry as our argument. 599 */ 600 if (xs == TAILQ_FIRST(&sc->sc_queue)) { 601 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 602 fromqueue = 1; 603 } else { 604 605 /* Polled requests can't be queued for later. */ 606 dontqueue = xs->flags & SCSI_POLL; 607 608 /* 609 * If there are jobs in the queue, run them first. 610 */ 611 if (TAILQ_FIRST(&sc->sc_queue) != NULL) { 612 /* 613 * If we can't queue, we have to abort, since 614 * we have to preserve order. 615 */ 616 if (dontqueue) { 617 splx(s); 618 xs->error = XS_DRIVER_STUFFUP; 619 return (TRY_AGAIN_LATER); 620 } 621 /* 622 * Swap with the first queue entry. 623 */ 624 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 625 xs = TAILQ_FIRST(&sc->sc_queue); 626 TAILQ_REMOVE(&sc->sc_queue, xs, adapter_q); 627 fromqueue = 1; 628 } 629 } 630 631 632 /* 633 * get a ccb to use. If the transfer 634 * is from a buf (possibly from interrupt time) 635 * then we can't allow it to sleep 636 */ 637 638 flags = xs->flags; 639 if ((ccb = adv_get_ccb(sc, flags)) == NULL) { 640 /* 641 * If we can't queue, we lose. 642 */ 643 if (dontqueue) { 644 splx(s); 645 xs->error = XS_DRIVER_STUFFUP; 646 return (TRY_AGAIN_LATER); 647 } 648 /* 649 * Stuff ourselves into the queue, in front 650 * if we came off in the first place. 651 */ 652 if (fromqueue) 653 TAILQ_INSERT_HEAD(&sc->sc_queue, xs, adapter_q); 654 else 655 TAILQ_INSERT_TAIL(&sc->sc_queue, xs, adapter_q); 656 splx(s); 657 return (SUCCESSFULLY_QUEUED); 658 } 659 splx(s); /* done playing with the queue */ 660 661 ccb->xs = xs; 662 ccb->timeout = xs->timeout; 663 664 /* 665 * Build up the request 666 */ 667 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); 668 669 ccb->scsiq.q2.ccb_ptr = (ulong) ccb; 670 671 ccb->scsiq.cdbptr = &xs->cmd->opcode; 672 ccb->scsiq.q2.cdb_len = xs->cmdlen; 673 ccb->scsiq.q1.target_id = ASC_TID_TO_TARGET_ID(sc_link->scsipi_scsi.target); 674 ccb->scsiq.q1.target_lun = sc_link->scsipi_scsi.lun; 675 ccb->scsiq.q2.target_ix = ASC_TIDLUN_TO_IX(sc_link->scsipi_scsi.target, 676 sc_link->scsipi_scsi.lun); 677 ccb->scsiq.q1.sense_addr = sc->sc_dmamap_control->dm_segs[0].ds_addr + 678 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); 679 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data); 680 681 /* 682 * If there are any outstanding requests for the current target, 683 * then every 255th request send an ORDERED request. This heuristic 684 * tries to retain the benefit of request sorting while preventing 685 * request starvation. 255 is the max number of tags or pending commands 686 * a device may have outstanding. 687 */ 688 sc->reqcnt[sc_link->scsipi_scsi.target]++; 689 if ((sc->reqcnt[sc_link->scsipi_scsi.target] > 0) && 690 (sc->reqcnt[sc_link->scsipi_scsi.target] % 255) == 0) { 691 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; 692 } else { 693 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; 694 } 695 696 697 if (xs->datalen) { 698 /* 699 * Map the DMA transfer. 700 */ 701 #ifdef TFS 702 if (flags & SCSI_DATA_UIO) { 703 error = bus_dmamap_load_uio(dmat, 704 ccb->dmamap_xfer, (struct uio *) xs->data, 705 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 706 } else 707 #endif /* TFS */ 708 { 709 error = bus_dmamap_load(dmat, 710 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 711 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 712 } 713 714 if (error) { 715 if (error == EFBIG) { 716 printf("%s: adv_scsi_cmd, more than %d dma" 717 " segments\n", 718 sc->sc_dev.dv_xname, ASC_MAX_SG_LIST); 719 } else { 720 printf("%s: adv_scsi_cmd, error %d loading" 721 " dma map\n", 722 sc->sc_dev.dv_xname, error); 723 } 724 725 xs->error = XS_DRIVER_STUFFUP; 726 adv_free_ccb(sc, ccb); 727 return (COMPLETE); 728 } 729 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 730 ccb->dmamap_xfer->dm_mapsize, 731 (flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 732 BUS_DMASYNC_PREWRITE); 733 734 735 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); 736 737 for (nsegs = 0; nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { 738 739 ccb->sghead.sg_list[nsegs].addr = 740 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; 741 ccb->sghead.sg_list[nsegs].bytes = 742 ccb->dmamap_xfer->dm_segs[nsegs].ds_len; 743 } 744 745 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = 746 ccb->dmamap_xfer->dm_nsegs; 747 748 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; 749 ccb->scsiq.sg_head = &ccb->sghead; 750 ccb->scsiq.q1.data_addr = 0; 751 ccb->scsiq.q1.data_cnt = 0; 752 } else { 753 /* 754 * No data xfer, use non S/G values. 755 */ 756 ccb->scsiq.q1.data_addr = 0; 757 ccb->scsiq.q1.data_cnt = 0; 758 } 759 760 #ifdef ASC_DEBUG 761 printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX \n", 762 sc_link->scsipi_scsi.target, 763 sc_link->scsipi_scsi.lun, xs->cmd->opcode, 764 (unsigned long)ccb); 765 #endif 766 s = splbio(); 767 adv_queue_ccb(sc, ccb); 768 splx(s); 769 770 /* 771 * Usually return SUCCESSFULLY QUEUED 772 */ 773 if ((flags & SCSI_POLL) == 0) 774 return (SUCCESSFULLY_QUEUED); 775 776 /* 777 * If we can't use interrupts, poll on completion 778 */ 779 if (adv_poll(sc, xs, ccb->timeout)) { 780 adv_timeout(ccb); 781 if (adv_poll(sc, xs, ccb->timeout)) 782 adv_timeout(ccb); 783 } 784 return (COMPLETE); 785 } 786 787 788 int 789 adv_intr(arg) 790 void *arg; 791 { 792 ASC_SOFTC *sc = arg; 793 struct scsipi_xfer *xs; 794 795 #ifdef ASC_DEBUG 796 int int_pend = FALSE; 797 798 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) 799 { 800 int_pend = TRUE; 801 printf("ISR - "); 802 } 803 #endif 804 AscISR(sc); 805 #ifdef ASC_DEBUG 806 if(int_pend) 807 printf("\n"); 808 #endif 809 810 /* 811 * If there are queue entries in the software queue, try to 812 * run the first one. We should be more or less guaranteed 813 * to succeed, since we just freed a CCB. 814 * 815 * NOTE: adv_scsi_cmd() relies on our calling it with 816 * the first entry in the queue. 817 */ 818 if ((xs = TAILQ_FIRST(&sc->sc_queue)) != NULL) 819 (void) adv_scsi_cmd(xs); 820 821 return (1); 822 } 823 824 825 /* 826 * Poll a particular unit, looking for a particular xs 827 */ 828 static int 829 adv_poll(sc, xs, count) 830 ASC_SOFTC *sc; 831 struct scsipi_xfer *xs; 832 int count; 833 { 834 835 /* timeouts are in msec, so we loop in 1000 usec cycles */ 836 while (count) { 837 adv_intr(sc); 838 if (xs->flags & ITSDONE) 839 return (0); 840 delay(1000); /* only happens in boot so ok */ 841 count--; 842 } 843 return (1); 844 } 845 846 847 static void 848 adv_timeout(arg) 849 void *arg; 850 { 851 ADV_CCB *ccb = arg; 852 struct scsipi_xfer *xs = ccb->xs; 853 struct scsipi_link *sc_link = xs->sc_link; 854 ASC_SOFTC *sc = sc_link->adapter_softc; 855 int s; 856 857 scsi_print_addr(sc_link); 858 printf("timed out"); 859 860 s = splbio(); 861 862 /* 863 * If it has been through before, then a previous abort has failed, 864 * don't try abort again, reset the bus instead. 865 */ 866 if (ccb->flags & CCB_ABORT) { 867 /* abort timed out */ 868 printf(" AGAIN. Resetting Bus\n"); 869 /* Lets try resetting the bus! */ 870 if (AscResetBus(sc) == ASC_ERROR) { 871 ccb->timeout = sc->scsi_reset_wait; 872 adv_queue_ccb(sc, ccb); 873 } 874 } else { 875 /* abort the operation that has timed out */ 876 printf("\n"); 877 AscAbortCCB(sc, (u_int32_t) ccb); 878 ccb->xs->error = XS_TIMEOUT; 879 ccb->timeout = ADV_ABORT_TIMEOUT; 880 ccb->flags |= CCB_ABORT; 881 adv_queue_ccb(sc, ccb); 882 } 883 884 splx(s); 885 } 886 887 888 static void 889 adv_watchdog(arg) 890 void *arg; 891 { 892 ADV_CCB *ccb = arg; 893 struct scsipi_xfer *xs = ccb->xs; 894 struct scsipi_link *sc_link = xs->sc_link; 895 ASC_SOFTC *sc = sc_link->adapter_softc; 896 int s; 897 898 s = splbio(); 899 900 ccb->flags &= ~CCB_WATCHDOG; 901 adv_start_ccbs(sc); 902 903 splx(s); 904 } 905 906 907 /******************************************************************************/ 908 /* NARROW and WIDE boards Interrupt callbacks */ 909 /******************************************************************************/ 910 911 912 /* 913 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() 914 * 915 * Interrupt callback function for the Narrow SCSI Asc Library. 916 */ 917 static void 918 adv_narrow_isr_callback(sc, qdonep) 919 ASC_SOFTC *sc; 920 ASC_QDONE_INFO *qdonep; 921 { 922 bus_dma_tag_t dmat = sc->sc_dmat; 923 ADV_CCB *ccb = (ADV_CCB *) qdonep->d2.ccb_ptr; 924 struct scsipi_xfer *xs = ccb->xs; 925 struct scsipi_sense_data *s1, *s2; 926 927 928 #ifdef ASC_DEBUG 929 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ", 930 (unsigned long)ccb, 931 xs->sc_link->scsipi_scsi.target, 932 xs->sc_link->scsipi_scsi.lun, xs->cmd->opcode); 933 #endif 934 untimeout(adv_timeout, ccb); 935 936 /* 937 * If we were a data transfer, unload the map that described 938 * the data buffer. 939 */ 940 if (xs->datalen) { 941 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 942 ccb->dmamap_xfer->dm_mapsize, 943 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 944 BUS_DMASYNC_POSTWRITE); 945 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 946 } 947 if ((ccb->flags & CCB_ALLOC) == 0) { 948 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 949 Debugger(); 950 return; 951 } 952 /* 953 * 'qdonep' contains the command's ending status. 954 */ 955 #ifdef ASC_DEBUG 956 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat); 957 #endif 958 switch (qdonep->d3.done_stat) { 959 case ASC_QD_NO_ERROR: 960 switch (qdonep->d3.host_stat) { 961 case ASC_QHSTA_NO_ERROR: 962 xs->error = XS_NOERROR; 963 xs->resid = 0; 964 break; 965 966 default: 967 /* QHSTA error occurred */ 968 xs->error = XS_DRIVER_STUFFUP; 969 break; 970 } 971 972 /* 973 * If an INQUIRY command completed successfully, then call 974 * the AscInquiryHandling() function to patch bugged boards. 975 */ 976 if ((xs->cmd->opcode == SCSICMD_Inquiry) && 977 (xs->sc_link->scsipi_scsi.lun == 0) && 978 (xs->datalen - qdonep->remain_bytes) >= 8) { 979 AscInquiryHandling(sc, 980 xs->sc_link->scsipi_scsi.target & 0x7, 981 (ASC_SCSI_INQUIRY *) xs->data); 982 } 983 break; 984 985 case ASC_QD_WITH_ERROR: 986 switch (qdonep->d3.host_stat) { 987 case ASC_QHSTA_NO_ERROR: 988 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { 989 s1 = &ccb->scsi_sense; 990 s2 = &xs->sense.scsi_sense; 991 *s2 = *s1; 992 xs->error = XS_SENSE; 993 } else { 994 xs->error = XS_DRIVER_STUFFUP; 995 } 996 break; 997 998 default: 999 /* QHSTA error occurred */ 1000 xs->error = XS_DRIVER_STUFFUP; 1001 break; 1002 } 1003 break; 1004 1005 case ASC_QD_ABORTED_BY_HOST: 1006 default: 1007 xs->error = XS_DRIVER_STUFFUP; 1008 break; 1009 } 1010 1011 1012 adv_free_ccb(sc, ccb); 1013 xs->flags |= ITSDONE; 1014 scsipi_done(xs); 1015 } 1016