aic79xx_osm.c revision 1.9
1 /* $NetBSD: aic79xx_osm.c,v 1.9 2004/10/04 11:08:47 fvdl 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 1.9 2004/10/04 11:08:47 fvdl Exp $"); 45 46 #include <dev/ic/aic79xx_osm.h> 47 #include <dev/ic/aic7xxx_cam.h> 48 #include <dev/ic/aic79xx_inline.h> 49 50 #ifndef AHD_TMODE_ENABLE 51 #define AHD_TMODE_ENABLE 0 52 #endif 53 54 static int ahd_ioctl(struct scsipi_channel *channel, u_long cmd, 55 caddr_t addr, int flag, struct proc *p); 56 static void ahd_action(struct scsipi_channel *chan, 57 scsipi_adapter_req_t req, void *arg); 58 static void ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, 59 int nsegments); 60 static int ahd_poll(struct ahd_softc *ahd, int wait); 61 static void ahd_setup_data(struct ahd_softc *ahd, struct scsipi_xfer *xs, 62 struct scb *scb); 63 64 #if NOT_YET 65 static void ahd_set_recoveryscb(struct ahd_softc *ahd, struct scb *scb); 66 #endif 67 68 /* 69 * Attach all the sub-devices we can find 70 */ 71 int 72 ahd_attach(struct ahd_softc *ahd) 73 { 74 int s; 75 char ahd_info[256]; 76 77 ahd_controller_info(ahd, ahd_info, sizeof(ahd_info)); 78 printf("%s: %s\n", ahd->sc_dev.dv_xname, ahd_info); 79 80 ahd_lock(ahd, &s); 81 82 ahd->sc_adapter.adapt_dev = &ahd->sc_dev; 83 ahd->sc_adapter.adapt_nchannels = 1; 84 85 ahd->sc_adapter.adapt_openings = AHD_MAX_QUEUE; 86 ahd->sc_adapter.adapt_max_periph = 32; 87 88 ahd->sc_adapter.adapt_ioctl = ahd_ioctl; 89 ahd->sc_adapter.adapt_minphys = ahd_minphys; 90 ahd->sc_adapter.adapt_request = ahd_action; 91 92 ahd->sc_channel.chan_adapter = &ahd->sc_adapter; 93 ahd->sc_channel.chan_bustype = &scsi_bustype; 94 ahd->sc_channel.chan_channel = 0; 95 ahd->sc_channel.chan_ntargets = AHD_NUM_TARGETS; 96 ahd->sc_channel.chan_nluns = 8 /*AHD_NUM_LUNS*/; 97 ahd->sc_channel.chan_id = ahd->our_id; 98 99 ahd->sc_child = config_found((void *)ahd, &ahd->sc_channel, scsiprint); 100 101 ahd_intr_enable(ahd, TRUE); 102 103 if (ahd->flags & AHD_RESET_BUS_A) 104 ahd_reset_channel(ahd, 'A', TRUE); 105 106 ahd_unlock(ahd, &s); 107 108 return (1); 109 } 110 111 static int 112 ahd_ioctl(struct scsipi_channel *channel, u_long cmd, 113 caddr_t addr, int flag, struct proc *p) 114 { 115 struct ahd_softc *ahd = (void *)channel->chan_adapter->adapt_dev; 116 int s, ret = ENOTTY; 117 118 switch (cmd) { 119 case SCBUSIORESET: 120 s = splbio(); 121 ahd_reset_channel(ahd, channel->chan_channel == 1 ? 'B' : 'A', TRUE); 122 splx(s); 123 ret = 0; 124 break; 125 default: 126 break; 127 } 128 129 return ret; 130 } 131 132 /* 133 * Catch an interrupt from the adapter 134 */ 135 void 136 ahd_platform_intr(void *arg) 137 { 138 struct ahd_softc *ahd; 139 140 ahd = (struct ahd_softc *)arg; 141 142 printf("%s; ahd_platform_intr\n", ahd_name(ahd)); 143 144 ahd_intr(ahd); 145 } 146 147 /* 148 * We have an scb which has been processed by the 149 * adaptor, now we look to see how the operation * went. 150 */ 151 void 152 ahd_done(struct ahd_softc *ahd, struct scb *scb) 153 { 154 struct scsipi_xfer *xs; 155 struct scsipi_periph *periph; 156 int s; 157 158 LIST_REMOVE(scb, pending_links); 159 160 xs = scb->xs; 161 periph = xs->xs_periph; 162 163 callout_stop(&scb->xs->xs_callout); 164 165 if (xs->datalen) { 166 int op; 167 168 if (xs->xs_control & XS_CTL_DATA_IN) 169 op = BUS_DMASYNC_POSTREAD; 170 else 171 op = BUS_DMASYNC_POSTWRITE; 172 173 bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0, 174 scb->dmamap->dm_mapsize, op); 175 bus_dmamap_unload(ahd->parent_dmat, scb->dmamap); 176 } 177 178 /* 179 * If the recovery SCB completes, we have to be 180 * out of our timeout. 181 */ 182 if ((scb->flags & SCB_RECOVERY_SCB) != 0) { 183 struct scb *list_scb; 184 185 /* 186 * We were able to complete the command successfully, 187 * so reinstate the timeouts for all other pending 188 * commands. 189 */ 190 LIST_FOREACH(list_scb, &ahd->pending_scbs, pending_links) { 191 struct scsipi_xfer *txs = list_scb->xs; 192 193 if (!(txs->xs_control & XS_CTL_POLL)) { 194 callout_reset(&txs->xs_callout, 195 (txs->timeout > 1000000) ? 196 (txs->timeout / 1000) * hz : 197 (txs->timeout * hz) / 1000, 198 ahd_timeout, list_scb); 199 } 200 } 201 202 if (ahd_get_transaction_status(scb) != XS_NOERROR) 203 ahd_set_transaction_status(scb, XS_TIMEOUT); 204 scsipi_printaddr(xs->xs_periph); 205 printf("%s: no longer in timeout, status = %x\n", 206 ahd_name(ahd), xs->status); 207 } 208 209 if (xs->error != XS_NOERROR) { 210 /* Don't clobber any existing error state */ 211 } else if ((xs->status == SCSI_STATUS_BUSY) || 212 (xs->status == SCSI_STATUS_QUEUE_FULL)) { 213 ahd_set_transaction_status(scb, XS_BUSY); 214 printf("%s: drive (ID %d, LUN %d) queue full (SCB 0x%x)\n", 215 ahd_name(ahd), SCB_GET_TARGET(ahd,scb), SCB_GET_LUN(scb), SCB_GET_TAG(scb)); 216 } else if ((scb->flags & SCB_SENSE) != 0) { 217 /* 218 * We performed autosense retrieval. 219 * 220 * zero the sense data before having 221 * the drive fill it. The SCSI spec mandates 222 * that any untransferred data should be 223 * assumed to be zero. Complete the 'bounce' 224 * of sense information through buffers accessible 225 * via bus-space by copying it into the clients 226 * csio. 227 */ 228 memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); 229 memcpy(&xs->sense.scsi_sense, ahd_get_sense_buf(ahd, scb), 230 sizeof(struct scsipi_sense_data)); 231 232 ahd_set_transaction_status(scb, XS_SENSE); 233 } else if ((scb->flags & SCB_PKT_SENSE) != 0) { 234 struct scsi_status_iu_header *siu; 235 u_int sense_len; 236 #ifdef AHD_DEBUG 237 int i; 238 #endif 239 /* 240 * Copy only the sense data into the provided buffer. 241 */ 242 siu = (struct scsi_status_iu_header *)scb->sense_data; 243 sense_len = MIN(scsi_4btoul(siu->sense_length), 244 sizeof(&xs->sense.scsi_sense)); 245 memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); 246 memcpy(&xs->sense.scsi_sense, 247 scb->sense_data + SIU_SENSE_OFFSET(siu), sense_len); 248 #ifdef AHD_DEBUG 249 printf("Copied %d bytes of sense data offset %d:", sense_len, 250 SIU_SENSE_OFFSET(siu)); 251 for (i = 0; i < sense_len; i++) 252 printf(" 0x%x", ((uint8_t *)&xs->sense.scsi_sense)[i]); 253 printf("\n"); 254 #endif 255 ahd_set_transaction_status(scb, XS_SENSE); 256 } 257 258 if (scb->flags & SCB_FREEZE_QUEUE) { 259 scsipi_periph_thaw(periph, 1); 260 scb->flags &= ~SCB_FREEZE_QUEUE; 261 } 262 263 if (scb->flags & SCB_REQUEUE) 264 ahd_set_transaction_status(scb, XS_REQUEUE); 265 266 ahd_lock(ahd, &s); 267 ahd_free_scb(ahd, scb); 268 ahd_unlock(ahd, &s); 269 270 scsipi_done(xs); 271 } 272 273 static void 274 ahd_action(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) 275 { 276 struct ahd_softc *ahd; 277 struct ahd_initiator_tinfo *tinfo; 278 struct ahd_tmode_tstate *tstate; 279 280 ahd = (void *)chan->chan_adapter->adapt_dev; 281 282 switch(req) { 283 284 case ADAPTER_REQ_RUN_XFER: 285 { 286 struct scsipi_xfer *xs; 287 struct scsipi_periph *periph; 288 struct scb *scb; 289 struct hardware_scb *hscb; 290 u_int target_id; 291 u_int our_id; 292 u_int col_idx; 293 char channel; 294 int s; 295 296 xs = arg; 297 periph = xs->xs_periph; 298 299 SC_DEBUG(periph, SCSIPI_DB3, ("ahd_action\n")); 300 301 target_id = periph->periph_target; 302 our_id = ahd->our_id; 303 channel = (chan->chan_channel == 1) ? 'B' : 'A'; 304 305 /* 306 * get an scb to use. 307 */ 308 ahd_lock(ahd, &s); 309 tinfo = ahd_fetch_transinfo(ahd, channel, our_id, 310 target_id, &tstate); 311 312 if (xs->xs_tag_type != 0 || 313 (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) 314 col_idx = AHD_NEVER_COL_IDX; 315 else 316 col_idx = AHD_BUILD_COL_IDX(target_id, 317 periph->periph_lun); 318 319 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { 320 xs->error = XS_RESOURCE_SHORTAGE; 321 ahd_unlock(ahd, &s); 322 scsipi_done(xs); 323 return; 324 } 325 ahd_unlock(ahd, &s); 326 327 hscb = scb->hscb; 328 329 SC_DEBUG(periph, SCSIPI_DB3, ("start scb(%p)\n", scb)); 330 scb->xs = xs; 331 332 /* 333 * Put all the arguments for the xfer in the scb 334 */ 335 hscb->control = 0; 336 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id); 337 hscb->lun = periph->periph_lun; 338 if (xs->xs_control & XS_CTL_RESET) { 339 hscb->cdb_len = 0; 340 scb->flags |= SCB_DEVICE_RESET; 341 hscb->control |= MK_MESSAGE; 342 hscb->task_management = SIU_TASKMGMT_LUN_RESET; 343 ahd_execute_scb(scb, NULL, 0); 344 } else { 345 hscb->task_management = 0; 346 } 347 348 ahd_setup_data(ahd, xs, scb); 349 break; 350 } 351 352 case ADAPTER_REQ_GROW_RESOURCES: 353 printf("%s: ADAPTER_REQ_GROW_RESOURCES\n", ahd_name(ahd)); 354 break; 355 356 case ADAPTER_REQ_SET_XFER_MODE: 357 { 358 struct scsipi_xfer_mode *xm = arg; 359 struct ahd_devinfo devinfo; 360 int target_id, our_id, first; 361 u_int width; 362 int s; 363 char channel; 364 u_int ppr_options, period, offset; 365 uint16_t old_autoneg; 366 367 target_id = xm->xm_target; 368 our_id = chan->chan_id; 369 channel = 'A'; 370 s = splbio(); 371 tinfo = ahd_fetch_transinfo(ahd, channel, our_id, target_id, 372 &tstate); 373 ahd_compile_devinfo(&devinfo, our_id, target_id, 374 0, channel, ROLE_INITIATOR); 375 376 old_autoneg = tstate->auto_negotiate; 377 378 /* 379 * XXX since the period and offset are not provided here, 380 * fake things by forcing a renegotiation using the user 381 * settings if this is called for the first time (i.e. 382 * during probe). Also, cap various values at the user 383 * values, assuming that the user set it up that way. 384 */ 385 if (ahd->inited_target[target_id] == 0) { 386 period = tinfo->user.period; 387 offset = tinfo->user.offset; 388 ppr_options = tinfo->user.ppr_options; 389 width = tinfo->user.width; 390 tstate->tagenable |= 391 (ahd->user_tagenable & devinfo.target_mask); 392 tstate->discenable |= 393 (ahd->user_discenable & devinfo.target_mask); 394 ahd->inited_target[target_id] = 1; 395 first = 1; 396 } else 397 first = 0; 398 399 if (xm->xm_mode & (PERIPH_CAP_WIDE16 | PERIPH_CAP_DT)) 400 width = MSG_EXT_WDTR_BUS_16_BIT; 401 else 402 width = MSG_EXT_WDTR_BUS_8_BIT; 403 404 ahd_validate_width(ahd, NULL, &width, ROLE_UNKNOWN); 405 if (width > tinfo->user.width) 406 width = tinfo->user.width; 407 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); 408 409 if (!(xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_DT))) { 410 period = 0; 411 offset = 0; 412 ppr_options = 0; 413 } 414 415 if ((xm->xm_mode & PERIPH_CAP_DT) && 416 (tinfo->user.ppr_options & MSG_EXT_PPR_DT_REQ)) 417 ppr_options |= MSG_EXT_PPR_DT_REQ; 418 else 419 ppr_options &= ~MSG_EXT_PPR_DT_REQ; 420 421 if ((tstate->discenable & devinfo.target_mask) == 0 || 422 (tstate->tagenable & devinfo.target_mask) == 0) 423 ppr_options &= ~MSG_EXT_PPR_IU_REQ; 424 425 if ((xm->xm_mode & PERIPH_CAP_TQING) && 426 (ahd->user_tagenable & devinfo.target_mask)) 427 tstate->tagenable |= devinfo.target_mask; 428 else 429 tstate->tagenable &= ~devinfo.target_mask; 430 431 ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX); 432 ahd_validate_offset(ahd, NULL, period, &offset, 433 MSG_EXT_WDTR_BUS_8_BIT, ROLE_UNKNOWN); 434 if (offset == 0) { 435 period = 0; 436 ppr_options = 0; 437 } 438 if (ppr_options != 0 439 && tinfo->user.transport_version >= 3) { 440 tinfo->goal.transport_version = 441 tinfo->user.transport_version; 442 tinfo->curr.transport_version = 443 tinfo->user.transport_version; 444 } 445 446 ahd_set_syncrate(ahd, &devinfo, period, offset, 447 ppr_options, AHD_TRANS_GOAL, FALSE); 448 449 /* 450 * If this is the first request, and no negotiation is 451 * needed, just confirm the state to the scsipi layer, 452 * so that it can print a message. 453 */ 454 if (old_autoneg == tstate->auto_negotiate && first) { 455 xm->xm_mode = 0; 456 xm->xm_period = tinfo->curr.period; 457 xm->xm_offset = tinfo->curr.offset; 458 if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) 459 xm->xm_mode |= PERIPH_CAP_WIDE16; 460 if (tinfo->curr.period) 461 xm->xm_mode |= PERIPH_CAP_SYNC; 462 if (tstate->tagenable & devinfo.target_mask) 463 xm->xm_mode |= PERIPH_CAP_TQING; 464 if (tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ) 465 xm->xm_mode |= PERIPH_CAP_DT; 466 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); 467 } 468 splx(s); 469 } 470 } 471 472 return; 473 } 474 475 static void 476 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments) 477 { 478 struct scb *scb; 479 struct scsipi_xfer *xs; 480 struct ahd_softc *ahd; 481 struct ahd_initiator_tinfo *tinfo; 482 struct ahd_tmode_tstate *tstate; 483 u_int mask; 484 int s; 485 486 scb = (struct scb*)arg; 487 xs = scb->xs; 488 xs->error = 0; 489 xs->status = 0; 490 xs->xs_status = 0; 491 ahd = (void*)xs->xs_periph->periph_channel->chan_adapter->adapt_dev; 492 493 scb->sg_count = 0; 494 if (nsegments != 0) { 495 void *sg; 496 int op; 497 u_int i; 498 499 ahd_setup_data_scb(ahd, scb); 500 501 /* Copy the segments into our SG list */ 502 for (i = nsegments, sg = scb->sg_list; i > 0; i--) { 503 504 sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr, 505 dm_segs->ds_len, 506 /*last*/i == 1); 507 dm_segs++; 508 } 509 510 if (xs->xs_control & XS_CTL_DATA_IN) 511 op = BUS_DMASYNC_PREREAD; 512 else 513 op = BUS_DMASYNC_PREWRITE; 514 515 bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0, 516 scb->dmamap->dm_mapsize, op); 517 } 518 519 ahd_lock(ahd, &s); 520 521 /* 522 * Last time we need to check if this SCB needs to 523 * be aborted. 524 */ 525 if (ahd_get_scsi_status(scb) == XS_STS_DONE) { 526 if (nsegments != 0) 527 bus_dmamap_unload(ahd->parent_dmat, 528 scb->dmamap); 529 ahd_free_scb(ahd, scb); 530 ahd_unlock(ahd, &s); 531 return; 532 } 533 534 tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid), 535 SCSIID_OUR_ID(scb->hscb->scsiid), 536 SCSIID_TARGET(ahd, scb->hscb->scsiid), 537 &tstate); 538 539 mask = SCB_GET_TARGET_MASK(ahd, scb); 540 541 if ((tstate->discenable & mask) != 0) 542 scb->hscb->control |= DISCENB; 543 544 if ((tstate->tagenable & mask) != 0) 545 scb->hscb->control |= xs->xs_tag_type|TAG_ENB; 546 547 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU) != 0) { 548 scb->flags |= SCB_PACKETIZED; 549 if (scb->hscb->task_management != 0) 550 scb->hscb->control &= ~MK_MESSAGE; 551 } 552 553 #if 0 /* This looks like it makes sense at first, but it can loop */ 554 if ((xs->xs_control & XS_CTL_DISCOVERY) && 555 (tinfo->goal.width != 0 556 || tinfo->goal.period != 0 557 || tinfo->goal.ppr_options != 0)) { 558 scb->flags |= SCB_NEGOTIATE; 559 scb->hscb->control |= MK_MESSAGE; 560 } else 561 #endif 562 if ((tstate->auto_negotiate & mask) != 0) { 563 scb->flags |= SCB_AUTO_NEGOTIATE; 564 scb->hscb->control |= MK_MESSAGE; 565 } 566 567 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); 568 569 scb->flags |= SCB_ACTIVE; 570 571 if (!(xs->xs_control & XS_CTL_POLL)) { 572 callout_reset(&scb->xs->xs_callout, xs->timeout > 1000000 ? 573 (xs->timeout / 1000) * hz : (xs->timeout * hz) / 1000, 574 ahd_timeout, scb); 575 } 576 577 if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) { 578 /* Define a mapping from our tag to the SCB. */ 579 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb; 580 ahd_pause(ahd); 581 ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); 582 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG); 583 ahd_unpause(ahd); 584 } else { 585 ahd_queue_scb(ahd, scb); 586 } 587 588 if (!(xs->xs_control & XS_CTL_POLL)) { 589 ahd_unlock(ahd, &s); 590 return; 591 } 592 /* 593 * If we can't use interrupts, poll for completion 594 */ 595 SC_DEBUG(xs->xs_periph, SCSIPI_DB3, ("cmd_poll\n")); 596 do { 597 if (ahd_poll(ahd, xs->timeout)) { 598 if (!(xs->xs_control & XS_CTL_SILENT)) 599 printf("cmd fail\n"); 600 ahd_timeout(scb); 601 break; 602 } 603 } while (!(xs->xs_status & XS_STS_DONE)); 604 605 ahd_unlock(ahd, &s); 606 } 607 608 static int 609 ahd_poll(struct ahd_softc *ahd, int wait) 610 { 611 612 while (--wait) { 613 DELAY(1000); 614 if (ahd_inb(ahd, INTSTAT) & INT_PEND) 615 break; 616 } 617 618 if (wait == 0) { 619 printf("%s: board is not responding\n", ahd_name(ahd)); 620 return (EIO); 621 } 622 623 ahd_intr((void *)ahd); 624 return (0); 625 } 626 627 628 static void 629 ahd_setup_data(struct ahd_softc *ahd, struct scsipi_xfer *xs, 630 struct scb *scb) 631 { 632 struct hardware_scb *hscb; 633 634 hscb = scb->hscb; 635 xs->resid = xs->status = 0; 636 637 hscb->cdb_len = xs->cmdlen; 638 if (hscb->cdb_len > MAX_CDB_LEN) { 639 int s; 640 /* 641 * Should CAM start to support CDB sizes 642 * greater than 16 bytes, we could use 643 * the sense buffer to store the CDB. 644 */ 645 ahd_set_transaction_status(scb, 646 XS_DRIVER_STUFFUP); 647 648 ahd_lock(ahd, &s); 649 ahd_free_scb(ahd, scb); 650 ahd_unlock(ahd, &s); 651 scsipi_done(xs); 652 } 653 memcpy(hscb->shared_data.idata.cdb, xs->cmd, hscb->cdb_len); 654 655 /* Only use S/G if there is a transfer */ 656 if (xs->datalen) { 657 int error; 658 659 error = bus_dmamap_load(ahd->parent_dmat, 660 scb->dmamap, xs->data, 661 xs->datalen, NULL, 662 ((xs->xs_control & XS_CTL_NOSLEEP) ? 663 BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | 664 BUS_DMA_STREAMING | 665 ((xs->xs_control & XS_CTL_DATA_IN) ? 666 BUS_DMA_READ : BUS_DMA_WRITE)); 667 if (error) { 668 #ifdef AHD_DEBUG 669 printf("%s: in ahc_setup_data(): bus_dmamap_load() " 670 "= %d\n", 671 ahd_name(ahd), error); 672 #endif 673 xs->error = XS_RESOURCE_SHORTAGE; 674 scsipi_done(xs); 675 return; 676 } 677 ahd_execute_scb(scb, 678 scb->dmamap->dm_segs, 679 scb->dmamap->dm_nsegs); 680 } else { 681 ahd_execute_scb(scb, NULL, 0); 682 } 683 } 684 685 void 686 ahd_timeout(void *arg) 687 { 688 struct scb *scb; 689 struct ahd_softc *ahd; 690 ahd_mode_state saved_modes; 691 int s; 692 693 scb = (struct scb *)arg; 694 ahd = (struct ahd_softc *)scb->ahd_softc; 695 696 printf("%s: ahd_timeout\n", ahd_name(ahd)); 697 698 ahd_lock(ahd, &s); 699 700 ahd_pause_and_flushwork(ahd); 701 saved_modes = ahd_save_modes(ahd); 702 #if 0 703 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 704 ahd_outb(ahd, SCSISIGO, ACKO); 705 printf("set ACK\n"); 706 ahd_outb(ahd, SCSISIGO, 0); 707 printf("clearing Ack\n"); 708 ahd_restore_modes(ahd, saved_modes); 709 #endif 710 if ((scb->flags & SCB_ACTIVE) == 0) { 711 /* Previous timeout took care of me already */ 712 printf("%s: Timedout SCB already complete. " 713 "Interrupts may not be functioning.\n", ahd_name(ahd)); 714 ahd_unpause(ahd); 715 ahd_unlock(ahd, &s); 716 return; 717 } 718 719 ahd_print_path(ahd, scb); 720 printf("SCB 0x%x - timed out\n", SCB_GET_TAG(scb)); 721 ahd_dump_card_state(ahd); 722 ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim), 723 /*initiate reset*/TRUE); 724 ahd_unlock(ahd, &s); 725 return; 726 } 727 728 int 729 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) 730 { 731 ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF, 732 M_NOWAIT /*| M_ZERO*/); 733 if (ahd->platform_data == NULL) 734 return (ENOMEM); 735 736 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); 737 738 return (0); 739 } 740 741 void 742 ahd_platform_free(struct ahd_softc *ahd) 743 { 744 free(ahd->platform_data, M_DEVBUF); 745 } 746 747 int 748 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd) 749 { 750 /* We don't sort softcs under NetBSD so report equal always */ 751 return (0); 752 } 753 754 int 755 ahd_detach(struct device *self, int flags) 756 { 757 int rv = 0; 758 759 struct ahd_softc *ahd = (struct ahd_softc*)self; 760 761 if (ahd->sc_child != NULL) 762 rv = config_detach((void *)ahd->sc_child, flags); 763 764 shutdownhook_disestablish(ahd->shutdown_hook); 765 766 ahd_free(ahd); 767 768 return rv; 769 } 770 771 void 772 ahd_platform_set_tags(struct ahd_softc *ahd, 773 struct ahd_devinfo *devinfo, ahd_queue_alg alg) 774 { 775 struct ahd_tmode_tstate *tstate; 776 777 ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, 778 devinfo->target, &tstate); 779 780 if (alg != AHD_QUEUE_NONE) 781 tstate->tagenable |= devinfo->target_mask; 782 else 783 tstate->tagenable &= ~devinfo->target_mask; 784 } 785 786 void 787 ahd_send_async(struct ahd_softc *ahc, char channel, u_int target, u_int lun, 788 ac_code code, void *opt_arg) 789 { 790 struct ahd_tmode_tstate *tstate; 791 struct ahd_initiator_tinfo *tinfo; 792 struct ahd_devinfo devinfo; 793 struct scsipi_channel *chan; 794 struct scsipi_xfer_mode xm; 795 796 #ifdef DIAGNOSTIC 797 if (channel != 'A') 798 panic("ahd_send_async: not channel A"); 799 #endif 800 chan = &ahc->sc_channel; 801 switch (code) { 802 case AC_TRANSFER_NEG: 803 tinfo = ahd_fetch_transinfo(ahc, channel, ahc->our_id, target, 804 &tstate); 805 ahd_compile_devinfo(&devinfo, ahc->our_id, target, lun, 806 channel, ROLE_UNKNOWN); 807 /* 808 * Don't bother if negotiating. XXX? 809 */ 810 if (tinfo->curr.period != tinfo->goal.period 811 || tinfo->curr.width != tinfo->goal.width 812 || tinfo->curr.offset != tinfo->goal.offset 813 || tinfo->curr.ppr_options != tinfo->goal.ppr_options) 814 break; 815 xm.xm_target = target; 816 xm.xm_mode = 0; 817 xm.xm_period = tinfo->curr.period; 818 xm.xm_offset = tinfo->curr.offset; 819 if (tinfo->goal.ppr_options & MSG_EXT_PPR_DT_REQ) 820 xm.xm_mode |= PERIPH_CAP_DT; 821 if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) 822 xm.xm_mode |= PERIPH_CAP_WIDE16; 823 if (tinfo->curr.period) 824 xm.xm_mode |= PERIPH_CAP_SYNC; 825 if (tstate->tagenable & devinfo.target_mask) 826 xm.xm_mode |= PERIPH_CAP_TQING; 827 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, &xm); 828 break; 829 case AC_BUS_RESET: 830 scsipi_async_event(chan, ASYNC_EVENT_RESET, NULL); 831 case AC_SENT_BDR: 832 default: 833 break; 834 } 835 } 836
Indexes created Fri Sep 26 08:10:20 GMT 2025