1 /* $NetBSD: aic79xx_osm.c,v 1.31 2010/02/24 22:37:57 dyoung Exp $ */ 2 3 /* 4 * Bus independent NetBSD shim for the aic7xxx based adaptec SCSI controllers 5 * 6 * Copyright (c) 1994-2002 Justin T. Gibbs. 7 * Copyright (c) 2001-2002 Adaptec Inc. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * Alternatively, this software may be distributed under the terms of the 20 * GNU Public License ("GPL"). 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 26 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.c#26 $ 35 * 36 * $FreeBSD: src/sys/dev/aic7xxx/aic79xx_osm.c,v 1.11 2003/05/04 00:20:07 gibbs Exp $ 37 */ 38 /* 39 * Ported from FreeBSD by Pascal Renauld, Network Storage Solutions, Inc. 40 * - April 2003 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: aic79xx_osm.c,v 1.31 2010/02/24 22:37:57 dyoung Exp $"); 45 46 #include <dev/ic/aic79xx_osm.h> 47 #include <dev/ic/aic79xx_inline.h> 48 49 #ifndef AHD_TMODE_ENABLE 50 #define AHD_TMODE_ENABLE 0 51 #endif 52 53 static int ahd_ioctl(struct scsipi_channel *channel, u_long cmd, 54 void *addr, int flag, struct proc *p); 55 static void ahd_action(struct scsipi_channel *chan, 56 scsipi_adapter_req_t req, void *arg); 57 static void ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, 58 int nsegments); 59 static int ahd_poll(struct ahd_softc *ahd, int wait); 60 static void ahd_setup_data(struct ahd_softc *ahd, struct scsipi_xfer *xs, 61 struct scb *scb); 62 63 #if NOT_YET 64 static void ahd_set_recoveryscb(struct ahd_softc *ahd, struct scb *scb); 65 #endif 66 67 static bool ahd_pmf_suspend(device_t, const pmf_qual_t *); 68 static bool ahd_pmf_resume(device_t, const pmf_qual_t *); 69 static bool ahd_pmf_shutdown(device_t, int); 70 71 /* 72 * Attach all the sub-devices we can find 73 */ 74 int 75 ahd_attach(struct ahd_softc *ahd) 76 { 77 int s; 78 char ahd_info[256]; 79 80 ahd_controller_info(ahd, ahd_info, sizeof(ahd_info)); 81 printf("%s: %s\n", ahd_name(ahd), ahd_info); 82 83 ahd_lock(ahd, &s); 84 85 ahd->sc_adapter.adapt_dev = ahd->sc_dev; 86 ahd->sc_adapter.adapt_nchannels = 1; 87 88 ahd->sc_adapter.adapt_openings = ahd->scb_data.numscbs - 1; 89 ahd->sc_adapter.adapt_max_periph = 32; 90 91 ahd->sc_adapter.adapt_ioctl = ahd_ioctl; 92 ahd->sc_adapter.adapt_minphys = ahd_minphys; 93 ahd->sc_adapter.adapt_request = ahd_action; 94 95 ahd->sc_channel.chan_adapter = &ahd->sc_adapter; 96 ahd->sc_channel.chan_bustype = &scsi_bustype; 97 ahd->sc_channel.chan_channel = 0; 98 ahd->sc_channel.chan_ntargets = AHD_NUM_TARGETS; 99 ahd->sc_channel.chan_nluns = 8 /*AHD_NUM_LUNS*/; 100 ahd->sc_channel.chan_id = ahd->our_id; 101 ahd->sc_channel.chan_flags |= SCSIPI_CHAN_CANGROW; 102 103 ahd->sc_child = config_found(ahd->sc_dev, &ahd->sc_channel, scsiprint); 104 105 ahd_intr_enable(ahd, TRUE); 106 107 if (ahd->flags & AHD_RESET_BUS_A) 108 ahd_reset_channel(ahd, 'A', TRUE); 109 110 if (!pmf_device_register1(ahd->sc_dev, 111 ahd_pmf_suspend, ahd_pmf_resume, ahd_pmf_shutdown)) 112 aprint_error_dev(ahd->sc_dev, 113 "couldn't establish power handler\n"); 114 115 ahd_unlock(ahd, &s); 116 117 return (1); 118 } 119 120 static bool 121 ahd_pmf_suspend(device_t dev, const pmf_qual_t *qual) 122 { 123 struct ahd_softc *sc = device_private(dev); 124 #if 0 125 return (ahd_suspend(sc) == 0); 126 #else 127 ahd_shutdown(sc); 128 return true; 129 #endif 130 } 131 132 static bool 133 ahd_pmf_resume(device_t dev, const pmf_qual_t *qual) 134 { 135 #if 0 136 struct ahd_softc *sc = device_private(dev); 137 138 return (ahd_resume(sc) == 0); 139 #else 140 return true; 141 #endif 142 } 143 144 static bool 145 ahd_pmf_shutdown(device_t dev, int howto) 146 { 147 struct ahd_softc *sc = device_private(dev); 148 149 /* Disable all interrupt sources by resetting the controller */ 150 ahd_shutdown(sc); 151 152 return true; 153 } 154 155 static int 156 ahd_ioctl(struct scsipi_channel *channel, u_long cmd, 157 void *addr, int flag, struct proc *p) 158 { 159 struct ahd_softc *ahd; 160 int s, ret = ENOTTY; 161 162 ahd = device_private(channel->chan_adapter->adapt_dev); 163 164 switch (cmd) { 165 case SCBUSIORESET: 166 s = splbio(); 167 ahd_reset_channel(ahd, channel->chan_channel == 1 ? 'B' : 'A', TRUE); 168 splx(s); 169 ret = 0; 170 break; 171 default: 172 break; 173 } 174 175 return ret; 176 } 177 178 /* 179 * Catch an interrupt from the adapter 180 */ 181 void 182 ahd_platform_intr(void *arg) 183 { 184 struct ahd_softc *ahd; 185 186 ahd = arg; 187 188 printf("%s; ahd_platform_intr\n", ahd_name(ahd)); 189 190 ahd_intr(ahd); 191 } 192 193 /* 194 * We have an scb which has been processed by the 195 * adaptor, now we look to see how the operation * went. 196 */ 197 void 198 ahd_done(struct ahd_softc *ahd, struct scb *scb) 199 { 200 struct scsipi_xfer *xs; 201 struct scsipi_periph *periph; 202 int s; 203 204 LIST_REMOVE(scb, pending_links); 205 206 xs = scb->xs; 207 periph = xs->xs_periph; 208 209 callout_stop(&scb->xs->xs_callout); 210 211 if (xs->datalen) { 212 int op; 213 214 if (xs->xs_control & XS_CTL_DATA_IN) 215 op = BUS_DMASYNC_POSTREAD; 216 else 217 op = BUS_DMASYNC_POSTWRITE; 218 219 bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0, 220 scb->dmamap->dm_mapsize, op); 221 bus_dmamap_unload(ahd->parent_dmat, scb->dmamap); 222 } 223 224 /* 225 * If the recovery SCB completes, we have to be 226 * out of our timeout. 227 */ 228 if ((scb->flags & SCB_RECOVERY_SCB) != 0) { 229 struct scb *list_scb; 230 231 /* 232 * We were able to complete the command successfully, 233 * so reinstate the timeouts for all other pending 234 * commands. 235 */ 236 LIST_FOREACH(list_scb, &ahd->pending_scbs, pending_links) { 237 struct scsipi_xfer *txs = list_scb->xs; 238 239 if (!(txs->xs_control & XS_CTL_POLL)) { 240 callout_reset(&txs->xs_callout, 241 (txs->timeout > 1000000) ? 242 (txs->timeout / 1000) * hz : 243 (txs->timeout * hz) / 1000, 244 ahd_timeout, list_scb); 245 } 246 } 247 248 if (ahd_get_transaction_status(scb) != XS_NOERROR) 249 ahd_set_transaction_status(scb, XS_TIMEOUT); 250 scsipi_printaddr(xs->xs_periph); 251 printf("%s: no longer in timeout, status = %x\n", 252 ahd_name(ahd), xs->status); 253 } 254 255 if (xs->error != XS_NOERROR) { 256 /* Don't clobber any existing error state */ 257 } else if ((xs->status == SCSI_STATUS_BUSY) || 258 (xs->status == SCSI_STATUS_QUEUE_FULL)) { 259 ahd_set_transaction_status(scb, XS_BUSY); 260 printf("%s: drive (ID %d, LUN %d) queue full (SCB 0x%x)\n", 261 ahd_name(ahd), SCB_GET_TARGET(ahd,scb), SCB_GET_LUN(scb), SCB_GET_TAG(scb)); 262 } else if ((scb->flags & SCB_SENSE) != 0) { 263 /* 264 * We performed autosense retrieval. 265 * 266 * zero the sense data before having 267 * the drive fill it. The SCSI spec mandates 268 * that any untransferred data should be 269 * assumed to be zero. Complete the 'bounce' 270 * of sense information through buffers accessible 271 * via bus-space by copying it into the clients 272 * csio. 273 */ 274 memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); 275 memcpy(&xs->sense.scsi_sense, ahd_get_sense_buf(ahd, scb), 276 sizeof(struct scsi_sense_data)); 277 278 ahd_set_transaction_status(scb, XS_SENSE); 279 } else if ((scb->flags & SCB_PKT_SENSE) != 0) { 280 struct scsi_status_iu_header *siu; 281 u_int sense_len; 282 #ifdef AHD_DEBUG 283 int i; 284 #endif 285 /* 286 * Copy only the sense data into the provided buffer. 287 */ 288 siu = (struct scsi_status_iu_header *)scb->sense_data; 289 sense_len = MIN(scsi_4btoul(siu->sense_length), 290 sizeof(xs->sense.scsi_sense)); 291 memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); 292 memcpy(&xs->sense.scsi_sense, 293 scb->sense_data + SIU_SENSE_OFFSET(siu), sense_len); 294 #ifdef AHD_DEBUG 295 printf("Copied %d bytes of sense data offset %d:", sense_len, 296 SIU_SENSE_OFFSET(siu)); 297 for (i = 0; i < sense_len; i++) 298 printf(" 0x%x", ((uint8_t *)&xs->sense.scsi_sense)[i]); 299 printf("\n"); 300 #endif 301 ahd_set_transaction_status(scb, XS_SENSE); 302 } 303 304 if (scb->flags & SCB_FREEZE_QUEUE) { 305 scsipi_periph_thaw(periph, 1); 306 scb->flags &= ~SCB_FREEZE_QUEUE; 307 } 308 309 if (scb->flags & SCB_REQUEUE) 310 ahd_set_transaction_status(scb, XS_REQUEUE); 311 312 ahd_lock(ahd, &s); 313 ahd_free_scb(ahd, scb); 314 ahd_unlock(ahd, &s); 315 316 scsipi_done(xs); 317 } 318 319 static void 320 ahd_action(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) 321 { 322 struct ahd_softc *ahd; 323 struct ahd_initiator_tinfo *tinfo; 324 struct ahd_tmode_tstate *tstate; 325 326 ahd = device_private(chan->chan_adapter->adapt_dev); 327 328 switch(req) { 329 330 case ADAPTER_REQ_RUN_XFER: 331 { 332 struct scsipi_xfer *xs; 333 struct scsipi_periph *periph; 334 struct scb *scb; 335 struct hardware_scb *hscb; 336 u_int target_id; 337 u_int our_id; 338 u_int col_idx; 339 char channel; 340 int s; 341 342 xs = arg; 343 periph = xs->xs_periph; 344 345 SC_DEBUG(periph, SCSIPI_DB3, ("ahd_action\n")); 346 347 target_id = periph->periph_target; 348 our_id = ahd->our_id; 349 channel = (chan->chan_channel == 1) ? 'B' : 'A'; 350 351 /* 352 * get an scb to use. 353 */ 354 ahd_lock(ahd, &s); 355 tinfo = ahd_fetch_transinfo(ahd, channel, our_id, 356 target_id, &tstate); 357 358 if (xs->xs_tag_type != 0 || 359 (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) 360 col_idx = AHD_NEVER_COL_IDX; 361 else 362 col_idx = AHD_BUILD_COL_IDX(target_id, 363 periph->periph_lun); 364 365 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { 366 xs->error = XS_RESOURCE_SHORTAGE; 367 ahd_unlock(ahd, &s); 368 scsipi_done(xs); 369 return; 370 } 371 ahd_unlock(ahd, &s); 372 373 hscb = scb->hscb; 374 375 SC_DEBUG(periph, SCSIPI_DB3, ("start scb(%p)\n", scb)); 376 scb->xs = xs; 377 378 /* 379 * Put all the arguments for the xfer in the scb 380 */ 381 hscb->control = 0; 382 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id); 383 hscb->lun = periph->periph_lun; 384 if (xs->xs_control & XS_CTL_RESET) { 385 hscb->cdb_len = 0; 386 scb->flags |= SCB_DEVICE_RESET; 387 hscb->control |= MK_MESSAGE; 388 hscb->task_management = SIU_TASKMGMT_LUN_RESET; 389 ahd_execute_scb(scb, NULL, 0); 390 } else { 391 hscb->task_management = 0; 392 } 393 394 ahd_setup_data(ahd, xs, scb); 395 break; 396 } 397 398 case ADAPTER_REQ_GROW_RESOURCES: 399 #ifdef AHC_DEBUG 400 printf("%s: ADAPTER_REQ_GROW_RESOURCES\n", ahd_name(ahd)); 401 #endif 402 chan->chan_adapter->adapt_openings += ahd_alloc_scbs(ahd); 403 if (ahd->scb_data.numscbs >= AHD_SCB_MAX_ALLOC) 404 chan->chan_flags &= ~SCSIPI_CHAN_CANGROW; 405 break; 406 407 case ADAPTER_REQ_SET_XFER_MODE: 408 { 409 struct scsipi_xfer_mode *xm = arg; 410 struct ahd_devinfo devinfo; 411 int target_id, our_id, first; 412 u_int width; 413 int s; 414 char channel; 415 u_int ppr_options = 0, period, offset; 416 uint16_t old_autoneg; 417 418 target_id = xm->xm_target; 419 our_id = chan->chan_id; 420 channel = 'A'; 421 s = splbio(); 422 tinfo = ahd_fetch_transinfo(ahd, channel, our_id, target_id, 423 &tstate); 424 ahd_compile_devinfo(&devinfo, our_id, target_id, 425 0, channel, ROLE_INITIATOR); 426 427 old_autoneg = tstate->auto_negotiate; 428 429 /* 430 * XXX since the period and offset are not provided here, 431 * fake things by forcing a renegotiation using the user 432 * settings if this is called for the first time (i.e. 433 * during probe). Also, cap various values at the user 434 * values, assuming that the user set it up that way. 435 */ 436 if (ahd->inited_target[target_id] == 0) { 437 period = tinfo->user.period; 438 offset = tinfo->user.offset; 439 ppr_options = tinfo->user.ppr_options; 440 width = tinfo->user.width; 441 tstate->tagenable |= 442 (ahd->user_tagenable & devinfo.target_mask); 443 tstate->discenable |= 444 (ahd->user_discenable & devinfo.target_mask); 445 ahd->inited_target[target_id] = 1; 446 first = 1; 447 } else 448 first = 0; 449 450 if (xm->xm_mode & (PERIPH_CAP_WIDE16 | PERIPH_CAP_DT)) 451 width = MSG_EXT_WDTR_BUS_16_BIT; 452 else 453 width = MSG_EXT_WDTR_BUS_8_BIT; 454 455 ahd_validate_width(ahd, NULL, &width, ROLE_UNKNOWN); 456 if (width > tinfo->user.width) 457 width = tinfo->user.width; 458 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); 459 460 if (!(xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_DT))) { 461 period = 0; 462 offset = 0; 463 ppr_options = 0; 464 } 465 466 if ((xm->xm_mode & PERIPH_CAP_DT) && 467 (tinfo->user.ppr_options & MSG_EXT_PPR_DT_REQ)) 468 ppr_options |= MSG_EXT_PPR_DT_REQ; 469 else 470 ppr_options &= ~MSG_EXT_PPR_DT_REQ; 471 472 if ((tstate->discenable & devinfo.target_mask) == 0 || 473 (tstate->tagenable & devinfo.target_mask) == 0) 474 ppr_options &= ~MSG_EXT_PPR_IU_REQ; 475 476 if ((xm->xm_mode & PERIPH_CAP_TQING) && 477 (ahd->user_tagenable & devinfo.target_mask)) 478 tstate->tagenable |= devinfo.target_mask; 479 else 480 tstate->tagenable &= ~devinfo.target_mask; 481 482 ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX); 483 ahd_validate_offset(ahd, NULL, period, &offset, 484 MSG_EXT_WDTR_BUS_8_BIT, ROLE_UNKNOWN); 485 if (offset == 0) { 486 period = 0; 487 ppr_options = 0; 488 } 489 if (ppr_options != 0 490 && tinfo->user.transport_version >= 3) { 491 tinfo->goal.transport_version = 492 tinfo->user.transport_version; 493 tinfo->curr.transport_version = 494 tinfo->user.transport_version; 495 } 496 497 ahd_set_syncrate(ahd, &devinfo, period, offset, 498 ppr_options, AHD_TRANS_GOAL, FALSE); 499 500 /* 501 * If this is the first request, and no negotiation is 502 * needed, just confirm the state to the scsipi layer, 503 * so that it can print a message. 504 */ 505 if (old_autoneg == tstate->auto_negotiate && first) { 506 xm->xm_mode = 0; 507 xm->xm_period = tinfo->curr.period; 508 xm->xm_offset = tinfo->curr.offset; 509 if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) 510 xm->xm_mode |= PERIPH_CAP_WIDE16; 511 if (tinfo->curr.period) 512 xm->xm_mode |= PERIPH_CAP_SYNC; 513 if (tstate->tagenable & devinfo.target_mask) 514 xm->xm_mode |= PERIPH_CAP_TQING; 515 if (tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ) 516 xm->xm_mode |= PERIPH_CAP_DT; 517 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); 518 } 519 splx(s); 520 } 521 } 522 523 return; 524 } 525 526 static void 527 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments) 528 { 529 struct scb *scb; 530 struct scsipi_xfer *xs; 531 struct ahd_softc *ahd; 532 struct ahd_initiator_tinfo *tinfo; 533 struct ahd_tmode_tstate *tstate; 534 u_int mask; 535 int s; 536 537 scb = arg; 538 xs = scb->xs; 539 xs->error = 0; 540 xs->status = 0; 541 xs->xs_status = 0; 542 ahd = device_private( 543 xs->xs_periph->periph_channel->chan_adapter->adapt_dev); 544 545 scb->sg_count = 0; 546 if (nsegments != 0) { 547 void *sg; 548 int op; 549 u_int i; 550 551 ahd_setup_data_scb(ahd, scb); 552 553 /* Copy the segments into our SG list */ 554 for (i = nsegments, sg = scb->sg_list; i > 0; i--) { 555 556 sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr, 557 dm_segs->ds_len, 558 /*last*/i == 1); 559 dm_segs++; 560 } 561 562 if (xs->xs_control & XS_CTL_DATA_IN) 563 op = BUS_DMASYNC_PREREAD; 564 else 565 op = BUS_DMASYNC_PREWRITE; 566 567 bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0, 568 scb->dmamap->dm_mapsize, op); 569 } 570 571 ahd_lock(ahd, &s); 572 573 /* 574 * Last time we need to check if this SCB needs to 575 * be aborted. 576 */ 577 if (ahd_get_scsi_status(scb) == XS_STS_DONE) { 578 if (nsegments != 0) 579 bus_dmamap_unload(ahd->parent_dmat, 580 scb->dmamap); 581 ahd_free_scb(ahd, scb); 582 ahd_unlock(ahd, &s); 583 return; 584 } 585 586 tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid), 587 SCSIID_OUR_ID(scb->hscb->scsiid), 588 SCSIID_TARGET(ahd, scb->hscb->scsiid), 589 &tstate); 590 591 mask = SCB_GET_TARGET_MASK(ahd, scb); 592 593 if ((tstate->discenable & mask) != 0) 594 scb->hscb->control |= DISCENB; 595 596 if ((tstate->tagenable & mask) != 0) 597 scb->hscb->control |= xs->xs_tag_type|TAG_ENB; 598 599 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU) != 0) { 600 scb->flags |= SCB_PACKETIZED; 601 if (scb->hscb->task_management != 0) 602 scb->hscb->control &= ~MK_MESSAGE; 603 } 604 605 #if 0 /* This looks like it makes sense at first, but it can loop */ 606 if ((xs->xs_control & XS_CTL_DISCOVERY) && 607 (tinfo->goal.width != 0 608 || tinfo->goal.period != 0 609 || tinfo->goal.ppr_options != 0)) { 610 scb->flags |= SCB_NEGOTIATE; 611 scb->hscb->control |= MK_MESSAGE; 612 } else 613 #endif 614 if ((tstate->auto_negotiate & mask) != 0) { 615 scb->flags |= SCB_AUTO_NEGOTIATE; 616 scb->hscb->control |= MK_MESSAGE; 617 } 618 619 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); 620 621 scb->flags |= SCB_ACTIVE; 622 623 if (!(xs->xs_control & XS_CTL_POLL)) { 624 callout_reset(&scb->xs->xs_callout, xs->timeout > 1000000 ? 625 (xs->timeout / 1000) * hz : (xs->timeout * hz) / 1000, 626 ahd_timeout, scb); 627 } 628 629 if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) { 630 /* Define a mapping from our tag to the SCB. */ 631 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb; 632 ahd_pause(ahd); 633 ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); 634 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG); 635 ahd_unpause(ahd); 636 } else { 637 ahd_queue_scb(ahd, scb); 638 } 639 640 if (!(xs->xs_control & XS_CTL_POLL)) { 641 ahd_unlock(ahd, &s); 642 return; 643 } 644 /* 645 * If we can't use interrupts, poll for completion 646 */ 647 SC_DEBUG(xs->xs_periph, SCSIPI_DB3, ("cmd_poll\n")); 648 do { 649 if (ahd_poll(ahd, xs->timeout)) { 650 if (!(xs->xs_control & XS_CTL_SILENT)) 651 printf("cmd fail\n"); 652 ahd_timeout(scb); 653 break; 654 } 655 } while (!(xs->xs_status & XS_STS_DONE)); 656 657 ahd_unlock(ahd, &s); 658 } 659 660 static int 661 ahd_poll(struct ahd_softc *ahd, int wait) 662 { 663 664 while (--wait) { 665 DELAY(1000); 666 if (ahd_inb(ahd, INTSTAT) & INT_PEND) 667 break; 668 } 669 670 if (wait == 0) { 671 printf("%s: board is not responding\n", ahd_name(ahd)); 672 return (EIO); 673 } 674 675 ahd_intr(ahd); 676 return (0); 677 } 678 679 680 static void 681 ahd_setup_data(struct ahd_softc *ahd, struct scsipi_xfer *xs, 682 struct scb *scb) 683 { 684 struct hardware_scb *hscb; 685 686 hscb = scb->hscb; 687 xs->resid = xs->status = 0; 688 689 hscb->cdb_len = xs->cmdlen; 690 if (hscb->cdb_len > MAX_CDB_LEN) { 691 int s; 692 /* 693 * Should CAM start to support CDB sizes 694 * greater than 16 bytes, we could use 695 * the sense buffer to store the CDB. 696 */ 697 ahd_set_transaction_status(scb, 698 XS_DRIVER_STUFFUP); 699 700 ahd_lock(ahd, &s); 701 ahd_free_scb(ahd, scb); 702 ahd_unlock(ahd, &s); 703 scsipi_done(xs); 704 } 705 memcpy(hscb->shared_data.idata.cdb, xs->cmd, hscb->cdb_len); 706 707 /* Only use S/G if there is a transfer */ 708 if (xs->datalen) { 709 int error; 710 711 error = bus_dmamap_load(ahd->parent_dmat, 712 scb->dmamap, xs->data, 713 xs->datalen, NULL, 714 ((xs->xs_control & XS_CTL_NOSLEEP) ? 715 BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | 716 BUS_DMA_STREAMING | 717 ((xs->xs_control & XS_CTL_DATA_IN) ? 718 BUS_DMA_READ : BUS_DMA_WRITE)); 719 if (error) { 720 #ifdef AHD_DEBUG 721 printf("%s: in ahd_setup_data(): bus_dmamap_load() " 722 "= %d\n", 723 ahd_name(ahd), error); 724 #endif 725 xs->error = XS_RESOURCE_SHORTAGE; 726 scsipi_done(xs); 727 return; 728 } 729 ahd_execute_scb(scb, 730 scb->dmamap->dm_segs, 731 scb->dmamap->dm_nsegs); 732 } else { 733 ahd_execute_scb(scb, NULL, 0); 734 } 735 } 736 737 void 738 ahd_timeout(void *arg) 739 { 740 struct scb *scb; 741 struct ahd_softc *ahd; 742 ahd_mode_state saved_modes; 743 int s; 744 745 scb = arg; 746 ahd = scb->ahd_softc; 747 748 printf("%s: ahd_timeout\n", ahd_name(ahd)); 749 750 ahd_lock(ahd, &s); 751 752 ahd_pause_and_flushwork(ahd); 753 saved_modes = ahd_save_modes(ahd); 754 #if 0 755 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 756 ahd_outb(ahd, SCSISIGO, ACKO); 757 printf("set ACK\n"); 758 ahd_outb(ahd, SCSISIGO, 0); 759 printf("clearing Ack\n"); 760 ahd_restore_modes(ahd, saved_modes); 761 #endif 762 if ((scb->flags & SCB_ACTIVE) == 0) { 763 /* Previous timeout took care of me already */ 764 printf("%s: Timedout SCB already complete. " 765 "Interrupts may not be functioning.\n", ahd_name(ahd)); 766 ahd_unpause(ahd); 767 ahd_unlock(ahd, &s); 768 return; 769 } 770 771 ahd_print_path(ahd, scb); 772 printf("SCB 0x%x - timed out\n", SCB_GET_TAG(scb)); 773 ahd_dump_card_state(ahd); 774 ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim), 775 /*initiate reset*/TRUE); 776 ahd_unlock(ahd, &s); 777 return; 778 } 779 780 int 781 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) 782 { 783 ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF, 784 M_NOWAIT /*| M_ZERO*/); 785 if (ahd->platform_data == NULL) 786 return (ENOMEM); 787 788 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); 789 790 return (0); 791 } 792 793 void 794 ahd_platform_free(struct ahd_softc *ahd) 795 { 796 free(ahd->platform_data, M_DEVBUF); 797 } 798 799 int 800 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd) 801 { 802 /* We don't sort softcs under NetBSD so report equal always */ 803 return (0); 804 } 805 806 int 807 ahd_detach(struct ahd_softc *ahd, int flags) 808 { 809 int rv = 0; 810 811 if (ahd->sc_child != NULL) 812 rv = config_detach(ahd->sc_child, flags); 813 814 pmf_device_deregister(ahd->sc_dev); 815 816 ahd_free(ahd); 817 818 return rv; 819 } 820 821 void 822 ahd_platform_set_tags(struct ahd_softc *ahd, 823 struct ahd_devinfo *devinfo, ahd_queue_alg alg) 824 { 825 struct ahd_tmode_tstate *tstate; 826 827 ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, 828 devinfo->target, &tstate); 829 830 if (alg != AHD_QUEUE_NONE) 831 tstate->tagenable |= devinfo->target_mask; 832 else 833 tstate->tagenable &= ~devinfo->target_mask; 834 } 835 836 void 837 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target, u_int lun, 838 ac_code code, void *opt_arg) 839 { 840 struct ahd_tmode_tstate *tstate; 841 struct ahd_initiator_tinfo *tinfo; 842 struct ahd_devinfo devinfo; 843 struct scsipi_channel *chan; 844 struct scsipi_xfer_mode xm; 845 846 #ifdef DIAGNOSTIC 847 if (channel != 'A') 848 panic("ahd_send_async: not channel A"); 849 #endif 850 chan = &ahd->sc_channel; 851 switch (code) { 852 case AC_TRANSFER_NEG: 853 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, target, 854 &tstate); 855 ahd_compile_devinfo(&devinfo, ahd->our_id, target, lun, 856 channel, ROLE_UNKNOWN); 857 /* 858 * Don't bother if negotiating. XXX? 859 */ 860 if (tinfo->curr.period != tinfo->goal.period 861 || tinfo->curr.width != tinfo->goal.width 862 || tinfo->curr.offset != tinfo->goal.offset 863 || tinfo->curr.ppr_options != tinfo->goal.ppr_options) 864 break; 865 xm.xm_target = target; 866 xm.xm_mode = 0; 867 xm.xm_period = tinfo->curr.period; 868 xm.xm_offset = tinfo->curr.offset; 869 if (tinfo->goal.ppr_options & MSG_EXT_PPR_DT_REQ) 870 xm.xm_mode |= PERIPH_CAP_DT; 871 if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) 872 xm.xm_mode |= PERIPH_CAP_WIDE16; 873 if (tinfo->curr.period) 874 xm.xm_mode |= PERIPH_CAP_SYNC; 875 if (tstate->tagenable & devinfo.target_mask) 876 xm.xm_mode |= PERIPH_CAP_TQING; 877 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, &xm); 878 break; 879 case AC_BUS_RESET: 880 scsipi_async_event(chan, ASYNC_EVENT_RESET, NULL); 881 case AC_SENT_BDR: 882 default: 883 break; 884 } 885 } 886