Annotation of sys/dev/ic/aic7xxx_openbsd.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: aic7xxx_openbsd.c,v 1.35 2007/08/04 14:37:34 krw Exp $ */
! 2: /* $NetBSD: aic7xxx_osm.c,v 1.14 2003/11/02 11:07:44 wiz Exp $ */
! 3:
! 4: /*
! 5: * Bus independent OpenBSD shim for the aic7xxx based adaptec SCSI controllers
! 6: *
! 7: * Copyright (c) 1994-2001 Justin T. Gibbs.
! 8: * Copyright (c) 2001-2002 Steve Murphree, Jr.
! 9: * All rights reserved.
! 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: * without modification.
! 17: * 2. The name of the author may not be used to endorse or promote products
! 18: * derived from this software without specific prior written permission.
! 19: *
! 20: * Alternatively, this software may be distributed under the terms of the
! 21: * GNU Public License ("GPL").
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
! 27: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: *
! 35: * //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.c#12 $
! 36: *
! 37: * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx_osm.c,v 1.31 2002/11/30 19:08:58 scottl Exp $
! 38: */
! 39: /*
! 40: * Ported from FreeBSD by Pascal Renauld, Network Storage Solutions, Inc. - April 2003
! 41: */
! 42:
! 43: #include <sys/cdefs.h>
! 44: /* __KERNEL_RCSID(0, "$NetBSD: aic7xxx_osm.c,v 1.14 2003/11/02 11:07:44 wiz Exp $"); */
! 45:
! 46: #include <dev/ic/aic7xxx_openbsd.h>
! 47: #include <dev/ic/aic7xxx_inline.h>
! 48:
! 49: #ifndef AHC_TMODE_ENABLE
! 50: #define AHC_TMODE_ENABLE 0
! 51: #endif
! 52:
! 53:
! 54: int ahc_action(struct scsi_xfer *);
! 55: int ahc_execute_scb(void *, bus_dma_segment_t *, int);
! 56: int ahc_poll(struct ahc_softc *, int);
! 57: int ahc_setup_data(struct ahc_softc *, struct scsi_xfer *, struct scb *);
! 58:
! 59: void ahc_minphys(struct buf *);
! 60: void ahc_adapter_req_set_xfer_mode(struct ahc_softc *, struct scb *);
! 61:
! 62:
! 63: struct cfdriver ahc_cd = {
! 64: NULL, "ahc", DV_DULL
! 65: };
! 66:
! 67: static struct scsi_adapter ahc_switch =
! 68: {
! 69: ahc_action,
! 70: ahc_minphys,
! 71: 0,
! 72: 0,
! 73: };
! 74:
! 75: /* the below structure is so we have a default dev struct for our link struct */
! 76: static struct scsi_device ahc_dev =
! 77: {
! 78: NULL, /* Use default error handler */
! 79: NULL, /* have a queue, served by this */
! 80: NULL, /* have no async handler */
! 81: NULL, /* Use default 'done' routine */
! 82: };
! 83:
! 84: /*
! 85: * Attach all the sub-devices we can find
! 86: */
! 87: int
! 88: ahc_attach(struct ahc_softc *ahc)
! 89: {
! 90: struct scsibus_attach_args saa;
! 91: int s;
! 92:
! 93: s = splbio();
! 94:
! 95: /*
! 96: * fill in the prototype scsi_links.
! 97: */
! 98: ahc->sc_channel.adapter_target = ahc->our_id;
! 99: if (ahc->features & AHC_WIDE)
! 100: ahc->sc_channel.adapter_buswidth = 16;
! 101: ahc->sc_channel.adapter_softc = ahc;
! 102: ahc->sc_channel.adapter = &ahc_switch;
! 103: ahc->sc_channel.openings = 16;
! 104: ahc->sc_channel.device = &ahc_dev;
! 105:
! 106: if (ahc->features & AHC_TWIN) {
! 107: /* Configure the second scsi bus */
! 108: ahc->sc_channel_b = ahc->sc_channel;
! 109: ahc->sc_channel_b.adapter_target = ahc->our_id_b;
! 110: }
! 111:
! 112: #ifndef DEBUG
! 113: if (bootverbose) {
! 114: char ahc_info[256];
! 115: ahc_controller_info(ahc, ahc_info, sizeof ahc_info);
! 116: printf("%s: %s\n", ahc->sc_dev.dv_xname, ahc_info);
! 117: }
! 118: #endif
! 119:
! 120: ahc_intr_enable(ahc, TRUE);
! 121:
! 122: if (ahc->flags & AHC_RESET_BUS_A)
! 123: ahc_reset_channel(ahc, 'A', TRUE);
! 124: if ((ahc->features & AHC_TWIN) && ahc->flags & AHC_RESET_BUS_B)
! 125: ahc_reset_channel(ahc, 'B', TRUE);
! 126:
! 127: bzero(&saa, sizeof(saa));
! 128: if ((ahc->flags & AHC_PRIMARY_CHANNEL) == 0) {
! 129: saa.saa_sc_link = &ahc->sc_channel;
! 130: ahc->sc_child = config_found((void *)&ahc->sc_dev,
! 131: &saa, scsiprint);
! 132: if (ahc->features & AHC_TWIN) {
! 133: saa.saa_sc_link = &ahc->sc_channel_b;
! 134: ahc->sc_child_b = config_found((void *)&ahc->sc_dev,
! 135: &saa, scsiprint);
! 136: }
! 137: } else {
! 138: if (ahc->features & AHC_TWIN) {
! 139: saa.saa_sc_link = &ahc->sc_channel_b;
! 140: ahc->sc_child = config_found((void *)&ahc->sc_dev,
! 141: &saa, scsiprint);
! 142: }
! 143: saa.saa_sc_link = &ahc->sc_channel;
! 144: ahc->sc_child_b = config_found((void *)&ahc->sc_dev,
! 145: &saa, scsiprint);
! 146: }
! 147:
! 148: splx(s);
! 149: return (1);
! 150: }
! 151:
! 152: /*
! 153: * Catch an interrupt from the adapter
! 154: */
! 155: int
! 156: ahc_platform_intr(void *arg)
! 157: {
! 158: struct ahc_softc *ahc = (struct ahc_softc *)arg;
! 159:
! 160: bus_dmamap_sync(ahc->parent_dmat, ahc->scb_data->hscb_dmamap,
! 161: 0, ahc->scb_data->hscb_dmamap->dm_mapsize,
! 162: BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
! 163:
! 164: return ahc_intr(ahc);
! 165: }
! 166:
! 167: /*
! 168: * We have an scb which has been processed by the
! 169: * adaptor, now we look to see how the operation
! 170: * went.
! 171: */
! 172: void
! 173: ahc_done(struct ahc_softc *ahc, struct scb *scb)
! 174: {
! 175: struct scsi_xfer *xs = scb->xs;
! 176: int s;
! 177:
! 178: bus_dmamap_sync(ahc->parent_dmat, ahc->scb_data->hscb_dmamap,
! 179: 0, ahc->scb_data->hscb_dmamap->dm_mapsize,
! 180: BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
! 181:
! 182: LIST_REMOVE(scb, pending_links);
! 183: if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
! 184: struct scb_tailq *untagged_q;
! 185: int target_offset;
! 186:
! 187: target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
! 188: untagged_q = &ahc->untagged_queues[target_offset];
! 189: TAILQ_REMOVE(untagged_q, scb, links.tqe);
! 190: scb->flags &= ~SCB_UNTAGGEDQ;
! 191: ahc_run_untagged_queue(ahc, untagged_q);
! 192: }
! 193:
! 194: timeout_del(&xs->stimeout);
! 195:
! 196: if (xs->datalen) {
! 197: int op;
! 198:
! 199: if ((xs->flags & SCSI_DATA_IN) != 0)
! 200: op = BUS_DMASYNC_POSTREAD;
! 201: else
! 202: op = BUS_DMASYNC_POSTWRITE;
! 203: bus_dmamap_sync(ahc->parent_dmat, scb->dmamap, 0,
! 204: scb->dmamap->dm_mapsize, op);
! 205: bus_dmamap_unload(ahc->parent_dmat, scb->dmamap);
! 206: }
! 207:
! 208: /* Translate the CAM status code to a SCSI error code. */
! 209: switch (xs->error) {
! 210: case CAM_SCSI_STATUS_ERROR:
! 211: case CAM_REQ_INPROG:
! 212: case CAM_REQ_CMP:
! 213: switch (xs->status) {
! 214: case SCSI_TASKSET_FULL:
! 215: /* SCSI Layer won't requeue, so we force infinite
! 216: * retries until queue space is available. XS_BUSY
! 217: * is dangerous because if the NOSLEEP flag is set
! 218: * it can cause the I/O to return EIO. XS_BUSY code
! 219: * falls through to XS_TIMEOUT anyway.
! 220: */
! 221: xs->error = XS_TIMEOUT;
! 222: xs->retries++;
! 223: break;
! 224: case SCSI_BUSY:
! 225: xs->error = XS_BUSY;
! 226: break;
! 227: case SCSI_CHECK:
! 228: case SCSI_TERMINATED:
! 229: if ((scb->flags & SCB_SENSE) == 0) {
! 230: /* CHECK on CHECK? */
! 231: xs->error = XS_DRIVER_STUFFUP;
! 232: } else
! 233: xs->error = XS_NOERROR;
! 234: break;
! 235: default:
! 236: xs->error = XS_NOERROR;
! 237: break;
! 238: }
! 239: break;
! 240: case CAM_BUSY:
! 241: xs->error = XS_BUSY;
! 242: break;
! 243: case CAM_CMD_TIMEOUT:
! 244: xs->error = XS_TIMEOUT;
! 245: break;
! 246: case CAM_BDR_SENT:
! 247: case CAM_SCSI_BUS_RESET:
! 248: xs->error = XS_RESET;
! 249: break;
! 250: case CAM_REQUEUE_REQ:
! 251: xs->error = XS_TIMEOUT;
! 252: xs->retries++;
! 253: break;
! 254: case CAM_SEL_TIMEOUT:
! 255: xs->error = XS_SELTIMEOUT;
! 256: break;
! 257: default:
! 258: xs->error = XS_DRIVER_STUFFUP;
! 259: break;
! 260: }
! 261:
! 262: /* Don't clobber any existing error state */
! 263: if (xs->error != XS_NOERROR) {
! 264: /* Don't clobber any existing error state */
! 265: } else if ((scb->flags & SCB_SENSE) != 0) {
! 266: /*
! 267: * We performed autosense retrieval.
! 268: *
! 269: * Zero any sense not transferred by the
! 270: * device. The SCSI spec mandates that any
! 271: * untransferred data should be assumed to be
! 272: * zero. Complete the 'bounce' of sense information
! 273: * through buffers accessible via bus-space by
! 274: * copying it into the clients csio.
! 275: */
! 276: memset(&xs->sense, 0, sizeof(struct scsi_sense_data));
! 277: memcpy(&xs->sense, ahc_get_sense_buf(ahc, scb),
! 278: aic_le32toh(scb->sg_list->len) & AHC_SG_LEN_MASK);
! 279: xs->error = XS_SENSE;
! 280: }
! 281:
! 282: s = splbio();
! 283: ahc_free_scb(ahc, scb);
! 284: splx(s);
! 285:
! 286: xs->flags |= ITSDONE;
! 287: scsi_done(xs);
! 288: }
! 289:
! 290: void
! 291: ahc_minphys(bp)
! 292: struct buf *bp;
! 293: {
! 294: /*
! 295: * Even though the card can transfer up to 16megs per command
! 296: * we are limited by the number of segments in the dma segment
! 297: * list that we can hold. The worst case is that all pages are
! 298: * discontinuous physically, hence the "page per segment" limit
! 299: * enforced here.
! 300: */
! 301: if (bp->b_bcount > ((AHC_NSEG - 1) * PAGE_SIZE)) {
! 302: bp->b_bcount = ((AHC_NSEG - 1) * PAGE_SIZE);
! 303: }
! 304: minphys(bp);
! 305: }
! 306:
! 307: int32_t
! 308: ahc_action(struct scsi_xfer *xs)
! 309: {
! 310: struct ahc_softc *ahc;
! 311: struct scb *scb;
! 312: struct hardware_scb *hscb;
! 313: u_int target_id;
! 314: u_int our_id;
! 315: int s;
! 316: int dontqueue = 0;
! 317:
! 318: SC_DEBUG(xs->sc_link, SDEV_DB3, ("ahc_action\n"));
! 319: ahc = (struct ahc_softc *)xs->sc_link->adapter_softc;
! 320:
! 321: /* determine safety of software queueing */
! 322: dontqueue = xs->flags & SCSI_POLL;
! 323:
! 324: target_id = xs->sc_link->target;
! 325: our_id = SCSI_SCSI_ID(ahc, xs->sc_link);
! 326:
! 327: /*
! 328: * get an scb to use.
! 329: */
! 330: s = splbio();
! 331: if ((scb = ahc_get_scb(ahc)) == NULL) {
! 332: splx(s);
! 333: return (TRY_AGAIN_LATER);
! 334: }
! 335: splx(s);
! 336:
! 337: hscb = scb->hscb;
! 338:
! 339: SC_DEBUG(xs->sc_link, SDEV_DB3, ("start scb(%p)\n", scb));
! 340: scb->xs = xs;
! 341: timeout_set(&xs->stimeout, ahc_timeout, scb);
! 342:
! 343: /*
! 344: * Put all the arguments for the xfer in the scb
! 345: */
! 346: hscb->control = 0;
! 347: hscb->scsiid = BUILD_SCSIID(ahc, xs->sc_link, target_id, our_id);
! 348: hscb->lun = xs->sc_link->lun;
! 349: if (xs->xs_control & XS_CTL_RESET) {
! 350: hscb->cdb_len = 0;
! 351: scb->flags |= SCB_DEVICE_RESET;
! 352: hscb->control |= MK_MESSAGE;
! 353: return (ahc_execute_scb(scb, NULL, 0));
! 354: }
! 355:
! 356: return (ahc_setup_data(ahc, xs, scb));
! 357: }
! 358:
! 359: int
! 360: ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments)
! 361: {
! 362: struct scb *scb;
! 363: struct scsi_xfer *xs;
! 364: struct ahc_softc *ahc;
! 365: struct ahc_initiator_tinfo *tinfo;
! 366: struct ahc_tmode_tstate *tstate;
! 367:
! 368: u_int mask;
! 369: int s;
! 370:
! 371: scb = (struct scb *)arg;
! 372: xs = scb->xs;
! 373: xs->error = CAM_REQ_INPROG;
! 374: xs->status = 0;
! 375: ahc = (struct ahc_softc *)xs->sc_link->adapter_softc;
! 376:
! 377: if (nsegments != 0) {
! 378: struct ahc_dma_seg *sg;
! 379: bus_dma_segment_t *end_seg;
! 380: int op;
! 381:
! 382: end_seg = dm_segs + nsegments;
! 383:
! 384: /* Copy the segments into our SG list */
! 385: sg = scb->sg_list;
! 386: while (dm_segs < end_seg) {
! 387: uint32_t len;
! 388:
! 389: sg->addr = aic_htole32(dm_segs->ds_addr);
! 390: len = dm_segs->ds_len
! 391: | ((dm_segs->ds_addr >> 8) & 0x7F000000);
! 392: sg->len = aic_htole32(len);
! 393: sg++;
! 394: dm_segs++;
! 395: }
! 396:
! 397: /*
! 398: * Note where to find the SG entries in bus space.
! 399: * We also set the full residual flag which the
! 400: * sequencer will clear as soon as a data transfer
! 401: * occurs.
! 402: */
! 403: scb->hscb->sgptr = aic_htole32(scb->sg_list_phys|SG_FULL_RESID);
! 404:
! 405: if ((xs->flags & SCSI_DATA_IN) != 0)
! 406: op = BUS_DMASYNC_PREREAD;
! 407: else
! 408: op = BUS_DMASYNC_PREWRITE;
! 409:
! 410: bus_dmamap_sync(ahc->parent_dmat, scb->dmamap, 0,
! 411: scb->dmamap->dm_mapsize, op);
! 412:
! 413: sg--;
! 414: sg->len |= aic_htole32(AHC_DMA_LAST_SEG);
! 415:
! 416: bus_dmamap_sync(ahc->parent_dmat, scb->sg_map->sg_dmamap,
! 417: 0, scb->sg_map->sg_dmamap->dm_mapsize,
! 418: BUS_DMASYNC_PREWRITE);
! 419:
! 420: /* Copy the first SG into the "current" data pointer area */
! 421: scb->hscb->dataptr = scb->sg_list->addr;
! 422: scb->hscb->datacnt = scb->sg_list->len;
! 423: } else {
! 424: scb->hscb->sgptr = aic_htole32(SG_LIST_NULL);
! 425: scb->hscb->dataptr = 0;
! 426: scb->hscb->datacnt = 0;
! 427: }
! 428:
! 429: scb->sg_count = nsegments;
! 430:
! 431: s = splbio();
! 432:
! 433: /*
! 434: * Last time we need to check if this SCB needs to
! 435: * be aborted.
! 436: */
! 437: if (xs->flags & ITSDONE) {
! 438: if (nsegments != 0)
! 439: bus_dmamap_unload(ahc->parent_dmat, scb->dmamap);
! 440:
! 441: ahc_free_scb(ahc, scb);
! 442: splx(s);
! 443: return (COMPLETE);
! 444: }
! 445:
! 446: tinfo = ahc_fetch_transinfo(ahc, SCSIID_CHANNEL(ahc, scb->hscb->scsiid),
! 447: SCSIID_OUR_ID(scb->hscb->scsiid),
! 448: SCSIID_TARGET(ahc, scb->hscb->scsiid),
! 449: &tstate);
! 450:
! 451: mask = SCB_GET_TARGET_MASK(ahc, scb);
! 452: scb->hscb->scsirate = tinfo->scsirate;
! 453: scb->hscb->scsioffset = tinfo->curr.offset;
! 454:
! 455: if ((tstate->ultraenb & mask) != 0)
! 456: scb->hscb->control |= ULTRAENB;
! 457:
! 458: if ((tstate->discenable & mask) != 0)
! 459: scb->hscb->control |= DISCENB;
! 460:
! 461: if ((tstate->auto_negotiate & mask) != 0) {
! 462: scb->flags |= SCB_AUTO_NEGOTIATE;
! 463: scb->hscb->control |= MK_MESSAGE;
! 464: }
! 465:
! 466: if ((tstate->tagenable & mask) != 0)
! 467: scb->hscb->control |= TAG_ENB;
! 468:
! 469: bus_dmamap_sync(ahc->parent_dmat, ahc->scb_data->hscb_dmamap,
! 470: 0, ahc->scb_data->hscb_dmamap->dm_mapsize,
! 471: BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
! 472:
! 473: LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
! 474:
! 475: if (!(xs->flags & SCSI_POLL))
! 476: timeout_add(&xs->stimeout, (xs->timeout * hz) / 1000);
! 477:
! 478: /*
! 479: * We only allow one untagged transaction
! 480: * per target in the initiator role unless
! 481: * we are storing a full busy target *lun*
! 482: * table in SCB space.
! 483: *
! 484: * This really should not be of any
! 485: * concern, as we take care to avoid this
! 486: * in ahc_done(). XXX smurph
! 487: */
! 488: if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
! 489: && (ahc->flags & AHC_SCB_BTT) == 0) {
! 490: struct scb_tailq *untagged_q;
! 491: int target_offset;
! 492:
! 493: target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
! 494: untagged_q = &(ahc->untagged_queues[target_offset]);
! 495: TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
! 496: scb->flags |= SCB_UNTAGGEDQ;
! 497: if (TAILQ_FIRST(untagged_q) != scb) {
! 498: if (xs->flags & SCSI_POLL)
! 499: goto poll;
! 500: else {
! 501: splx(s);
! 502: return (SUCCESSFULLY_QUEUED);
! 503: }
! 504: }
! 505: }
! 506: scb->flags |= SCB_ACTIVE;
! 507:
! 508: if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
! 509: /* Define a mapping from our tag to the SCB. */
! 510: ahc->scb_data->scbindex[scb->hscb->tag] = scb;
! 511: ahc_pause(ahc);
! 512: if ((ahc->flags & AHC_PAGESCBS) == 0)
! 513: ahc_outb(ahc, SCBPTR, scb->hscb->tag);
! 514: ahc_outb(ahc, TARG_IMMEDIATE_SCB, scb->hscb->tag);
! 515: ahc_unpause(ahc);
! 516: } else {
! 517: ahc_queue_scb(ahc, scb);
! 518: }
! 519:
! 520: if (!(xs->flags & SCSI_POLL)) {
! 521: if (ahc->inited_target[xs->sc_link->target] == 0) {
! 522: struct ahc_devinfo devinfo;
! 523:
! 524: ahc_adapter_req_set_xfer_mode(ahc, scb);
! 525: ahc_scb_devinfo(ahc, &devinfo, scb);
! 526: ahc_update_neg_request(ahc, &devinfo, tstate, tinfo,
! 527: AHC_NEG_IF_NON_ASYNC);
! 528:
! 529: ahc->inited_target[xs->sc_link->target] = 1;
! 530: }
! 531: splx(s);
! 532: return (SUCCESSFULLY_QUEUED);
! 533: }
! 534:
! 535: /*
! 536: * If we can't use interrupts, poll for completion
! 537: */
! 538: poll:
! 539: SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_poll\n"));
! 540:
! 541: do {
! 542: if (ahc_poll(ahc, xs->timeout)) {
! 543: if (!(xs->flags & SCSI_SILENT))
! 544: printf("cmd fail\n");
! 545: ahc_timeout(scb);
! 546: break;
! 547: }
! 548: } while (!(xs->flags & ITSDONE));
! 549:
! 550: splx(s);
! 551: return (COMPLETE);
! 552: }
! 553:
! 554: int
! 555: ahc_poll(struct ahc_softc *ahc, int wait)
! 556: {
! 557: while (--wait) {
! 558: DELAY(1000);
! 559: if (ahc_inb(ahc, INTSTAT) & INT_PEND)
! 560: break;
! 561: }
! 562:
! 563: if (wait == 0) {
! 564: printf("%s: board is not responding\n", ahc_name(ahc));
! 565: return (EIO);
! 566: }
! 567:
! 568: ahc_intr((void *)ahc);
! 569: return (0);
! 570: }
! 571:
! 572: int
! 573: ahc_setup_data(struct ahc_softc *ahc, struct scsi_xfer *xs,
! 574: struct scb *scb)
! 575: {
! 576: struct hardware_scb *hscb;
! 577: int s;
! 578:
! 579: hscb = scb->hscb;
! 580: xs->resid = xs->status = 0;
! 581: xs->error = CAM_REQ_INPROG;
! 582:
! 583: hscb->cdb_len = xs->cmdlen;
! 584: if (hscb->cdb_len > sizeof(hscb->cdb32)) {
! 585: s = splbio();
! 586: ahc_free_scb(ahc, scb);
! 587: splx(s);
! 588: xs->error = XS_DRIVER_STUFFUP;
! 589: xs->flags |= ITSDONE;
! 590: scsi_done(xs);
! 591: return (COMPLETE);
! 592: }
! 593:
! 594: if (hscb->cdb_len > 12) {
! 595: memcpy(hscb->cdb32, xs->cmd, hscb->cdb_len);
! 596: scb->flags |= SCB_CDB32_PTR;
! 597: } else {
! 598: memcpy(hscb->shared_data.cdb, xs->cmd, hscb->cdb_len);
! 599: }
! 600:
! 601: /* Only use S/G if there is a transfer */
! 602: if (xs->datalen) {
! 603: int error;
! 604:
! 605: error = bus_dmamap_load(ahc->parent_dmat,
! 606: scb->dmamap, xs->data,
! 607: xs->datalen, NULL,
! 608: (xs->flags & SCSI_NOSLEEP) ?
! 609: BUS_DMA_NOWAIT : BUS_DMA_WAITOK);
! 610: if (error) {
! 611: #ifdef AHC_DEBUG
! 612: printf("%s: in ahc_setup_data(): bus_dmamap_load() "
! 613: "= %d\n",
! 614: ahc_name(ahc), error);
! 615: #endif
! 616: s = splbio();
! 617: ahc_free_scb(ahc, scb);
! 618: splx(s);
! 619: return (TRY_AGAIN_LATER); /* XXX fvdl */
! 620: }
! 621: error = ahc_execute_scb(scb,
! 622: scb->dmamap->dm_segs,
! 623: scb->dmamap->dm_nsegs);
! 624: return error;
! 625: } else {
! 626: return ahc_execute_scb(scb, NULL, 0);
! 627: }
! 628: }
! 629:
! 630: void
! 631: ahc_timeout(void *arg)
! 632: {
! 633: struct scb *scb, *list_scb;
! 634: struct ahc_softc *ahc;
! 635: int s;
! 636: int found;
! 637: char channel;
! 638:
! 639: scb = (struct scb *)arg;
! 640: ahc = (struct ahc_softc *)scb->xs->sc_link->adapter_softc;
! 641:
! 642: s = splbio();
! 643:
! 644: #ifdef AHC_DEBUG
! 645: printf("%s: SCB %d timed out\n", ahc_name(ahc), scb->hscb->tag);
! 646: ahc_dump_card_state(ahc);
! 647: #endif
! 648:
! 649: ahc_pause(ahc);
! 650:
! 651: if (scb->flags & SCB_ACTIVE) {
! 652: channel = SCB_GET_CHANNEL(ahc, scb);
! 653: ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT);
! 654: /*
! 655: * Go through all of our pending SCBs and remove
! 656: * any scheduled timeouts for them. They're about to be
! 657: * aborted so no need for them to timeout.
! 658: */
! 659: LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) {
! 660: if (list_scb->xs)
! 661: timeout_del(&list_scb->xs->stimeout);
! 662: }
! 663: found = ahc_reset_channel(ahc, channel, /*Initiate Reset*/TRUE);
! 664: #ifdef AHC_DEBUG
! 665: printf("%s: Issued Channel %c Bus Reset %d SCBs aborted\n",
! 666: ahc_name(ahc), channel, found);
! 667: #endif
! 668: }
! 669:
! 670: ahc_unpause(ahc);
! 671: splx(s);
! 672: }
! 673:
! 674:
! 675: void
! 676: ahc_platform_set_tags(struct ahc_softc *ahc,
! 677: struct ahc_devinfo *devinfo, int alg)
! 678: {
! 679: struct ahc_tmode_tstate *tstate;
! 680:
! 681: ahc_fetch_transinfo(ahc, devinfo->channel, devinfo->our_scsiid,
! 682: devinfo->target, &tstate);
! 683:
! 684: /* XXXX Need to check quirks before doing this! XXXX */
! 685:
! 686: switch (alg) {
! 687: case AHC_QUEUE_BASIC:
! 688: case AHC_QUEUE_TAGGED:
! 689: tstate->tagenable |= devinfo->target_mask;
! 690: break;
! 691: case AHC_QUEUE_NONE:
! 692: tstate->tagenable &= ~devinfo->target_mask;
! 693: break;
! 694: }
! 695: }
! 696:
! 697: int
! 698: ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
! 699: {
! 700: if (sizeof(struct ahc_platform_data) > 0) {
! 701: ahc->platform_data = malloc(sizeof(struct ahc_platform_data),
! 702: M_DEVBUF, M_NOWAIT);
! 703: if (ahc->platform_data == NULL)
! 704: return (ENOMEM);
! 705: bzero(ahc->platform_data, sizeof(struct ahc_platform_data));
! 706: }
! 707:
! 708: return (0);
! 709: }
! 710:
! 711: void
! 712: ahc_platform_free(struct ahc_softc *ahc)
! 713: {
! 714: if (sizeof(struct ahc_platform_data) > 0)
! 715: free(ahc->platform_data, M_DEVBUF);
! 716: }
! 717:
! 718: int
! 719: ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc)
! 720: {
! 721: return (0);
! 722: }
! 723:
! 724: void
! 725: ahc_send_async(struct ahc_softc *ahc, char channel, u_int target, u_int lun,
! 726: ac_code code, void *opt_arg)
! 727: {
! 728: /* Nothing to do here for OpenBSD */
! 729: }
! 730:
! 731: void
! 732: ahc_adapter_req_set_xfer_mode(struct ahc_softc *ahc, struct scb *scb)
! 733: {
! 734: struct ahc_initiator_tinfo *tinfo;
! 735: struct ahc_tmode_tstate *tstate;
! 736: struct ahc_syncrate *syncrate;
! 737: struct ahc_devinfo devinfo;
! 738: u_int16_t quirks;
! 739: u_int width, ppr_options, period, offset;
! 740: int s;
! 741:
! 742: s = splbio();
! 743:
! 744: ahc_scb_devinfo(ahc, &devinfo, scb);
! 745: quirks = scb->xs->sc_link->quirks;
! 746: tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
! 747: devinfo.our_scsiid, devinfo.target, &tstate);
! 748:
! 749: tstate->discenable |= (ahc->user_discenable & devinfo.target_mask);
! 750:
! 751: if (quirks & SDEV_NOTAGS)
! 752: tstate->tagenable &= ~devinfo.target_mask;
! 753: else if (ahc->user_tagenable & devinfo.target_mask)
! 754: tstate->tagenable |= devinfo.target_mask;
! 755:
! 756: if (quirks & SDEV_NOWIDE)
! 757: width = MSG_EXT_WDTR_BUS_8_BIT;
! 758: else
! 759: width = MSG_EXT_WDTR_BUS_16_BIT;
! 760:
! 761: ahc_validate_width(ahc, NULL, &width, ROLE_UNKNOWN);
! 762: if (width > tinfo->user.width)
! 763: width = tinfo->user.width;
! 764: ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
! 765:
! 766: if (quirks & SDEV_NOSYNC) {
! 767: period = 0;
! 768: offset = 0;
! 769: } else {
! 770: period = tinfo->user.period;
! 771: offset = tinfo->user.offset;
! 772: }
! 773:
! 774: /* XXX Look at saved INQUIRY flags for PPR capabilities XXX */
! 775: ppr_options = tinfo->user.ppr_options;
! 776: /* XXX Other reasons to avoid ppr? XXX */
! 777: if (width < MSG_EXT_WDTR_BUS_16_BIT)
! 778: ppr_options = 0;
! 779:
! 780: if ((tstate->discenable & devinfo.target_mask) == 0 ||
! 781: (tstate->tagenable & devinfo.target_mask) == 0)
! 782: ppr_options &= ~MSG_EXT_PPR_PROT_IUS;
! 783:
! 784: syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
! 785: AHC_SYNCRATE_MAX);
! 786: ahc_validate_offset(ahc, NULL, syncrate, &offset, width,
! 787: ROLE_UNKNOWN);
! 788:
! 789: if (offset == 0) {
! 790: period = 0;
! 791: ppr_options = 0;
! 792: }
! 793:
! 794: if (ppr_options != 0 && tinfo->user.transport_version >= 3) {
! 795: tinfo->goal.transport_version = tinfo->user.transport_version;
! 796: tinfo->curr.transport_version = tinfo->user.transport_version;
! 797: }
! 798:
! 799: ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset, ppr_options,
! 800: AHC_TRANS_GOAL, FALSE);
! 801:
! 802: splx(s);
! 803: }
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