| 1 | /* $NetBSD: aic7xxx_osm.c,v 1.38 2016/10/30 23:56:05 mlelstv Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Bus independent FreeBSD shim for the aic7xxx based adaptec SCSI controllers |
| 5 | * |
| 6 | * Copyright (c) 1994-2001 Justin T. Gibbs. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions, and the following disclaimer, |
| 14 | * without modification. |
| 15 | * 2. The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
| 17 | * |
| 18 | * Alternatively, this software may be distributed under the terms of the |
| 19 | * GNU Public License ("GPL"). |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR |
| 25 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | * |
| 33 | * //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.c#12 $ |
| 34 | * |
| 35 | * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx_osm.c,v 1.31 2002/11/30 19:08:58 scottl Exp $ |
| 36 | */ |
| 37 | /* |
| 38 | * Ported from FreeBSD by Pascal Renauld, Network Storage Solutions, Inc. - April 2003 |
| 39 | */ |
| 40 | |
| 41 | #include <sys/cdefs.h> |
| 42 | __KERNEL_RCSID(0, "$NetBSD: aic7xxx_osm.c,v 1.38 2016/10/30 23:56:05 mlelstv Exp $" ); |
| 43 | |
| 44 | #include <dev/ic/aic7xxx_osm.h> |
| 45 | #include <dev/ic/aic7xxx_inline.h> |
| 46 | |
| 47 | #ifndef AHC_TMODE_ENABLE |
| 48 | #define AHC_TMODE_ENABLE 0 |
| 49 | #endif |
| 50 | |
| 51 | |
| 52 | static void ahc_action(struct scsipi_channel *chan, |
| 53 | scsipi_adapter_req_t req, void *arg); |
| 54 | static void ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, |
| 55 | int nsegments); |
| 56 | static int ahc_poll(struct ahc_softc *ahc, int wait); |
| 57 | static void ahc_setup_data(struct ahc_softc *ahc, |
| 58 | struct scsipi_xfer *xs, struct scb *scb); |
| 59 | static void ahc_set_recoveryscb(struct ahc_softc *ahc, struct scb *scb); |
| 60 | static int ahc_ioctl(struct scsipi_channel *channel, u_long cmd, |
| 61 | void *addr, int flag, struct proc *p); |
| 62 | |
| 63 | static bool ahc_pmf_suspend(device_t, const pmf_qual_t *); |
| 64 | static bool ahc_pmf_resume(device_t, const pmf_qual_t *); |
| 65 | static bool ahc_pmf_shutdown(device_t, int); |
| 66 | |
| 67 | |
| 68 | /* |
| 69 | * Attach all the sub-devices we can find |
| 70 | */ |
| 71 | int |
| 72 | ahc_attach(struct ahc_softc *ahc) |
| 73 | { |
| 74 | u_long s; |
| 75 | int i; |
| 76 | char ahc_info[256]; |
| 77 | |
| 78 | LIST_INIT(&ahc->pending_scbs); |
| 79 | for (i = 0; i < AHC_NUM_TARGETS; i++) |
| 80 | TAILQ_INIT(&ahc->untagged_queues[i]); |
| 81 | |
| 82 | ahc_lock(ahc, &s); |
| 83 | |
| 84 | ahc->sc_adapter.adapt_dev = ahc->sc_dev; |
| 85 | ahc->sc_adapter.adapt_nchannels = (ahc->features & AHC_TWIN) ? 2 : 1; |
| 86 | |
| 87 | ahc->sc_adapter.adapt_openings = ahc->scb_data->numscbs - 1; |
| 88 | ahc->sc_adapter.adapt_max_periph = 16; |
| 89 | |
| 90 | ahc->sc_adapter.adapt_ioctl = ahc_ioctl; |
| 91 | ahc->sc_adapter.adapt_minphys = ahc_minphys; |
| 92 | ahc->sc_adapter.adapt_request = ahc_action; |
| 93 | |
| 94 | ahc->sc_channel.chan_adapter = &ahc->sc_adapter; |
| 95 | ahc->sc_channel.chan_bustype = &scsi_bustype; |
| 96 | ahc->sc_channel.chan_channel = 0; |
| 97 | ahc->sc_channel.chan_ntargets = (ahc->features & AHC_WIDE) ? 16 : 8; |
| 98 | ahc->sc_channel.chan_nluns = 8 /*AHC_NUM_LUNS*/; |
| 99 | ahc->sc_channel.chan_id = ahc->our_id; |
| 100 | ahc->sc_channel.chan_flags |= SCSIPI_CHAN_CANGROW; |
| 101 | |
| 102 | if (ahc->features & AHC_TWIN) { |
| 103 | ahc->sc_channel_b = ahc->sc_channel; |
| 104 | ahc->sc_channel_b.chan_id = ahc->our_id_b; |
| 105 | ahc->sc_channel_b.chan_channel = 1; |
| 106 | } |
| 107 | |
| 108 | ahc_controller_info(ahc, ahc_info, sizeof(ahc_info)); |
| 109 | printf("%s: %s\n" , device_xname(ahc->sc_dev), ahc_info); |
| 110 | |
| 111 | if ((ahc->flags & AHC_PRIMARY_CHANNEL) == 0) { |
| 112 | ahc->sc_child = config_found(ahc->sc_dev, |
| 113 | &ahc->sc_channel, scsiprint); |
| 114 | if (ahc->features & AHC_TWIN) |
| 115 | ahc->sc_child_b = config_found(ahc->sc_dev, |
| 116 | &ahc->sc_channel_b, scsiprint); |
| 117 | } else { |
| 118 | if (ahc->features & AHC_TWIN) |
| 119 | ahc->sc_child = config_found(ahc->sc_dev, |
| 120 | &ahc->sc_channel_b, scsiprint); |
| 121 | ahc->sc_child_b = config_found(ahc->sc_dev, |
| 122 | &ahc->sc_channel, scsiprint); |
| 123 | } |
| 124 | |
| 125 | ahc_intr_enable(ahc, TRUE); |
| 126 | |
| 127 | if (ahc->flags & AHC_RESET_BUS_A) |
| 128 | ahc_reset_channel(ahc, 'A', TRUE); |
| 129 | if ((ahc->features & AHC_TWIN) && ahc->flags & AHC_RESET_BUS_B) |
| 130 | ahc_reset_channel(ahc, 'B', TRUE); |
| 131 | |
| 132 | if (!pmf_device_register1(ahc->sc_dev, |
| 133 | ahc_pmf_suspend, ahc_pmf_resume, ahc_pmf_shutdown)) |
| 134 | aprint_error_dev(ahc->sc_dev, |
| 135 | "couldn't establish power handler\n" ); |
| 136 | |
| 137 | ahc_unlock(ahc, &s); |
| 138 | return (1); |
| 139 | } |
| 140 | |
| 141 | /* |
| 142 | * XXX we should call the real suspend and resume functions here |
| 143 | * but pmf(9) stuff on cardbus backend is untested yet |
| 144 | */ |
| 145 | |
| 146 | static bool |
| 147 | ahc_pmf_suspend(device_t dev, const pmf_qual_t *qual) |
| 148 | { |
| 149 | struct ahc_softc *sc = device_private(dev); |
| 150 | #if 0 |
| 151 | return (ahc_suspend(sc) == 0); |
| 152 | #else |
| 153 | ahc_shutdown(sc); |
| 154 | return true; |
| 155 | #endif |
| 156 | } |
| 157 | |
| 158 | static bool |
| 159 | ahc_pmf_resume(device_t dev, const pmf_qual_t *qual) |
| 160 | { |
| 161 | #if 0 |
| 162 | struct ahc_softc *sc = device_private(dev); |
| 163 | |
| 164 | return (ahc_resume(sc) == 0); |
| 165 | #else |
| 166 | return true; |
| 167 | #endif |
| 168 | } |
| 169 | |
| 170 | static bool |
| 171 | ahc_pmf_shutdown(device_t dev, int howto) |
| 172 | { |
| 173 | struct ahc_softc *sc = device_private(dev); |
| 174 | |
| 175 | /* Disable all interrupt sources by resetting the controller */ |
| 176 | ahc_shutdown(sc); |
| 177 | |
| 178 | return true; |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * Catch an interrupt from the adapter |
| 183 | */ |
| 184 | void |
| 185 | ahc_platform_intr(void *arg) |
| 186 | { |
| 187 | struct ahc_softc *ahc; |
| 188 | |
| 189 | ahc = arg; |
| 190 | ahc_intr(ahc); |
| 191 | } |
| 192 | |
| 193 | /* |
| 194 | * We have an scb which has been processed by the |
| 195 | * adaptor, now we look to see how the operation |
| 196 | * went. |
| 197 | */ |
| 198 | void |
| 199 | ahc_done(struct ahc_softc *ahc, struct scb *scb) |
| 200 | { |
| 201 | struct scsipi_xfer *xs; |
| 202 | struct scsipi_periph *periph; |
| 203 | u_long s; |
| 204 | |
| 205 | xs = scb->xs; |
| 206 | periph = xs->xs_periph; |
| 207 | LIST_REMOVE(scb, pending_links); |
| 208 | if ((scb->flags & SCB_UNTAGGEDQ) != 0) { |
| 209 | struct scb_tailq *untagged_q; |
| 210 | int target_offset; |
| 211 | |
| 212 | target_offset = SCB_GET_TARGET_OFFSET(ahc, scb); |
| 213 | untagged_q = &ahc->untagged_queues[target_offset]; |
| 214 | TAILQ_REMOVE(untagged_q, scb, links.tqe); |
| 215 | scb->flags &= ~SCB_UNTAGGEDQ; |
| 216 | ahc_run_untagged_queue(ahc, untagged_q); |
| 217 | } |
| 218 | |
| 219 | callout_stop(&scb->xs->xs_callout); |
| 220 | |
| 221 | if (xs->datalen) { |
| 222 | int op; |
| 223 | |
| 224 | if (xs->xs_control & XS_CTL_DATA_IN) |
| 225 | op = BUS_DMASYNC_POSTREAD; |
| 226 | else |
| 227 | op = BUS_DMASYNC_POSTWRITE; |
| 228 | bus_dmamap_sync(ahc->parent_dmat, scb->dmamap, 0, |
| 229 | scb->dmamap->dm_mapsize, op); |
| 230 | bus_dmamap_unload(ahc->parent_dmat, scb->dmamap); |
| 231 | } |
| 232 | |
| 233 | /* |
| 234 | * If the recovery SCB completes, we have to be |
| 235 | * out of our timeout. |
| 236 | */ |
| 237 | if ((scb->flags & SCB_RECOVERY_SCB) != 0) { |
| 238 | struct scb *list_scb; |
| 239 | |
| 240 | /* |
| 241 | * We were able to complete the command successfully, |
| 242 | * so reinstate the timeouts for all other pending |
| 243 | * commands. |
| 244 | */ |
| 245 | LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) { |
| 246 | if (!(list_scb->xs->xs_control & XS_CTL_POLL)) { |
| 247 | callout_reset(&list_scb->xs->xs_callout, |
| 248 | (list_scb->xs->timeout > 1000000) ? |
| 249 | (list_scb->xs->timeout / 1000) * hz : |
| 250 | (list_scb->xs->timeout * hz) / 1000, |
| 251 | ahc_timeout, list_scb); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | if (ahc_get_transaction_status(scb) == CAM_BDR_SENT |
| 256 | || ahc_get_transaction_status(scb) == CAM_REQ_ABORTED) |
| 257 | ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); |
| 258 | scsipi_printaddr(xs->xs_periph); |
| 259 | printf("%s: no longer in timeout, status = %x\n" , |
| 260 | ahc_name(ahc), xs->status); |
| 261 | |
| 262 | scsipi_channel_thaw(&ahc->sc_channel, 1); |
| 263 | if (ahc->features & AHC_TWIN) |
| 264 | scsipi_channel_thaw(&ahc->sc_channel_b, 1); |
| 265 | } |
| 266 | |
| 267 | /* Don't clobber any existing error state */ |
| 268 | if (xs->error != XS_NOERROR) { |
| 269 | /* Don't clobber any existing error state */ |
| 270 | } else if ((scb->flags & SCB_SENSE) != 0) { |
| 271 | /* |
| 272 | * We performed autosense retrieval. |
| 273 | * |
| 274 | * Zero any sense not transferred by the |
| 275 | * device. The SCSI spec mandates that any |
| 276 | * untransferred data should be assumed to be |
| 277 | * zero. Complete the 'bounce' of sense information |
| 278 | * through buffers accessible via bus-space by |
| 279 | * copying it into the clients csio. |
| 280 | */ |
| 281 | memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); |
| 282 | memcpy(&xs->sense.scsi_sense, |
| 283 | ahc_get_sense_buf(ahc, scb), |
| 284 | sizeof(xs->sense.scsi_sense)); |
| 285 | xs->error = XS_SENSE; |
| 286 | } |
| 287 | if (scb->flags & SCB_FREEZE_QUEUE) { |
| 288 | scsipi_periph_thaw(periph, 1); |
| 289 | scb->flags &= ~SCB_FREEZE_QUEUE; |
| 290 | } |
| 291 | |
| 292 | ahc_lock(ahc, &s); |
| 293 | ahc_free_scb(ahc, scb); |
| 294 | ahc_unlock(ahc, &s); |
| 295 | |
| 296 | scsipi_done(xs); |
| 297 | } |
| 298 | |
| 299 | static int |
| 300 | ahc_ioctl(struct scsipi_channel *channel, u_long cmd, void *addr, |
| 301 | int flag, struct proc *p) |
| 302 | { |
| 303 | struct ahc_softc *ahc; |
| 304 | int s, ret = ENOTTY; |
| 305 | |
| 306 | ahc = device_private(channel->chan_adapter->adapt_dev); |
| 307 | |
| 308 | switch (cmd) { |
| 309 | case SCBUSIORESET: |
| 310 | s = splbio(); |
| 311 | ahc_reset_channel(ahc, channel->chan_channel == 1 ? 'B' : 'A', |
| 312 | TRUE); |
| 313 | splx(s); |
| 314 | ret = 0; |
| 315 | break; |
| 316 | default: |
| 317 | break; |
| 318 | } |
| 319 | |
| 320 | return ret; |
| 321 | } |
| 322 | |
| 323 | static void |
| 324 | ahc_action(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) |
| 325 | { |
| 326 | struct ahc_softc *ahc; |
| 327 | int s; |
| 328 | struct ahc_initiator_tinfo *tinfo; |
| 329 | struct ahc_tmode_tstate *tstate; |
| 330 | |
| 331 | ahc = device_private(chan->chan_adapter->adapt_dev); |
| 332 | |
| 333 | switch (req) { |
| 334 | |
| 335 | case ADAPTER_REQ_RUN_XFER: |
| 336 | { |
| 337 | struct scsipi_xfer *xs; |
| 338 | struct scsipi_periph *periph; |
| 339 | struct scb *scb; |
| 340 | struct hardware_scb *hscb; |
| 341 | u_int target_id; |
| 342 | u_int our_id; |
| 343 | u_long ss; |
| 344 | |
| 345 | xs = arg; |
| 346 | periph = xs->xs_periph; |
| 347 | |
| 348 | target_id = periph->periph_target; |
| 349 | our_id = ahc->our_id; |
| 350 | |
| 351 | SC_DEBUG(xs->xs_periph, SCSIPI_DB3, ("ahc_action\n" )); |
| 352 | |
| 353 | /* |
| 354 | * get an scb to use. |
| 355 | */ |
| 356 | ahc_lock(ahc, &ss); |
| 357 | if ((scb = ahc_get_scb(ahc)) == NULL) { |
| 358 | xs->error = XS_RESOURCE_SHORTAGE; |
| 359 | ahc_unlock(ahc, &ss); |
| 360 | scsipi_done(xs); |
| 361 | return; |
| 362 | } |
| 363 | ahc_unlock(ahc, &ss); |
| 364 | |
| 365 | hscb = scb->hscb; |
| 366 | |
| 367 | SC_DEBUG(periph, SCSIPI_DB3, ("start scb(%p)\n" , scb)); |
| 368 | scb->xs = xs; |
| 369 | |
| 370 | /* |
| 371 | * Put all the arguments for the xfer in the scb |
| 372 | */ |
| 373 | hscb->control = 0; |
| 374 | hscb->scsiid = BUILD_SCSIID(ahc, 0, target_id, our_id); |
| 375 | hscb->lun = periph->periph_lun; |
| 376 | if (xs->xs_control & XS_CTL_RESET) { |
| 377 | hscb->cdb_len = 0; |
| 378 | scb->flags |= SCB_DEVICE_RESET; |
| 379 | hscb->control |= MK_MESSAGE; |
| 380 | ahc_execute_scb(scb, NULL, 0); |
| 381 | } |
| 382 | |
| 383 | ahc_setup_data(ahc, xs, scb); |
| 384 | |
| 385 | break; |
| 386 | } |
| 387 | case ADAPTER_REQ_GROW_RESOURCES: |
| 388 | #ifdef AHC_DEBUG |
| 389 | printf("%s: ADAPTER_REQ_GROW_RESOURCES\n" , ahc_name(ahc)); |
| 390 | #endif |
| 391 | chan->chan_adapter->adapt_openings += ahc_alloc_scbs(ahc); |
| 392 | if (ahc->scb_data->numscbs >= AHC_SCB_MAX_ALLOC) |
| 393 | chan->chan_flags &= ~SCSIPI_CHAN_CANGROW; |
| 394 | return; |
| 395 | |
| 396 | case ADAPTER_REQ_SET_XFER_MODE: |
| 397 | { |
| 398 | struct scsipi_xfer_mode *xm = arg; |
| 399 | struct ahc_devinfo devinfo; |
| 400 | int target_id, our_id, first; |
| 401 | u_int width; |
| 402 | char channel; |
| 403 | u_int ppr_options = 0, period, offset; |
| 404 | struct ahc_syncrate *syncrate; |
| 405 | uint16_t old_autoneg; |
| 406 | |
| 407 | target_id = xm->xm_target; |
| 408 | our_id = chan->chan_id; |
| 409 | channel = (chan->chan_channel == 1) ? 'B' : 'A'; |
| 410 | s = splbio(); |
| 411 | tinfo = ahc_fetch_transinfo(ahc, channel, our_id, target_id, |
| 412 | &tstate); |
| 413 | ahc_compile_devinfo(&devinfo, our_id, target_id, |
| 414 | 0, channel, ROLE_INITIATOR); |
| 415 | |
| 416 | old_autoneg = tstate->auto_negotiate; |
| 417 | |
| 418 | /* |
| 419 | * XXX since the period and offset are not provided here, |
| 420 | * fake things by forcing a renegotiation using the user |
| 421 | * settings if this is called for the first time (i.e. |
| 422 | * during probe). Also, cap various values at the user |
| 423 | * values, assuming that the user set it up that way. |
| 424 | */ |
| 425 | if (ahc->inited_target[target_id] == 0) { |
| 426 | period = tinfo->user.period; |
| 427 | offset = tinfo->user.offset; |
| 428 | ppr_options = tinfo->user.ppr_options; |
| 429 | width = tinfo->user.width; |
| 430 | tstate->tagenable |= |
| 431 | (ahc->user_tagenable & devinfo.target_mask); |
| 432 | tstate->discenable |= |
| 433 | (ahc->user_discenable & devinfo.target_mask); |
| 434 | ahc->inited_target[target_id] = 1; |
| 435 | first = 1; |
| 436 | } else |
| 437 | first = 0; |
| 438 | |
| 439 | if (xm->xm_mode & (PERIPH_CAP_WIDE16 | PERIPH_CAP_DT)) |
| 440 | width = MSG_EXT_WDTR_BUS_16_BIT; |
| 441 | else |
| 442 | width = MSG_EXT_WDTR_BUS_8_BIT; |
| 443 | |
| 444 | ahc_validate_width(ahc, NULL, &width, ROLE_UNKNOWN); |
| 445 | if (width > tinfo->user.width) |
| 446 | width = tinfo->user.width; |
| 447 | ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE); |
| 448 | |
| 449 | if (!(xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_DT))) { |
| 450 | period = 0; |
| 451 | offset = 0; |
| 452 | ppr_options = 0; |
| 453 | } |
| 454 | |
| 455 | if ((xm->xm_mode & PERIPH_CAP_DT) && |
| 456 | (ppr_options & MSG_EXT_PPR_DT_REQ)) |
| 457 | ppr_options |= MSG_EXT_PPR_DT_REQ; |
| 458 | else |
| 459 | ppr_options &= ~MSG_EXT_PPR_DT_REQ; |
| 460 | if ((tstate->discenable & devinfo.target_mask) == 0 || |
| 461 | (tstate->tagenable & devinfo.target_mask) == 0) |
| 462 | ppr_options &= ~MSG_EXT_PPR_IU_REQ; |
| 463 | |
| 464 | if ((xm->xm_mode & PERIPH_CAP_TQING) && |
| 465 | (ahc->user_tagenable & devinfo.target_mask)) |
| 466 | tstate->tagenable |= devinfo.target_mask; |
| 467 | else |
| 468 | tstate->tagenable &= ~devinfo.target_mask; |
| 469 | |
| 470 | syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, |
| 471 | AHC_SYNCRATE_MAX); |
| 472 | ahc_validate_offset(ahc, NULL, syncrate, &offset, |
| 473 | width, ROLE_UNKNOWN); |
| 474 | |
| 475 | if (offset == 0) { |
| 476 | period = 0; |
| 477 | ppr_options = 0; |
| 478 | } |
| 479 | |
| 480 | if (ppr_options != 0 |
| 481 | && tinfo->user.transport_version >= 3) { |
| 482 | tinfo->goal.transport_version = |
| 483 | tinfo->user.transport_version; |
| 484 | tinfo->curr.transport_version = |
| 485 | tinfo->user.transport_version; |
| 486 | } |
| 487 | |
| 488 | ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset, |
| 489 | ppr_options, AHC_TRANS_GOAL, FALSE); |
| 490 | |
| 491 | /* |
| 492 | * If this is the first request, and no negotiation is |
| 493 | * needed, just confirm the state to the scsipi layer, |
| 494 | * so that it can print a message. |
| 495 | */ |
| 496 | if (old_autoneg == tstate->auto_negotiate && first) { |
| 497 | xm->xm_mode = 0; |
| 498 | xm->xm_period = tinfo->curr.period; |
| 499 | xm->xm_offset = tinfo->curr.offset; |
| 500 | if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) |
| 501 | xm->xm_mode |= PERIPH_CAP_WIDE16; |
| 502 | if (tinfo->curr.period) |
| 503 | xm->xm_mode |= PERIPH_CAP_SYNC; |
| 504 | if (tstate->tagenable & devinfo.target_mask) |
| 505 | xm->xm_mode |= PERIPH_CAP_TQING; |
| 506 | if (tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ) |
| 507 | xm->xm_mode |= PERIPH_CAP_DT; |
| 508 | scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); |
| 509 | } |
| 510 | splx(s); |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | return; |
| 515 | } |
| 516 | |
| 517 | static void |
| 518 | ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments) |
| 519 | { |
| 520 | struct scb *scb; |
| 521 | struct scsipi_xfer *xs; |
| 522 | struct ahc_softc *ahc; |
| 523 | struct ahc_initiator_tinfo *tinfo; |
| 524 | struct ahc_tmode_tstate *tstate; |
| 525 | |
| 526 | u_int mask; |
| 527 | u_long s; |
| 528 | |
| 529 | scb = (struct scb *)arg; |
| 530 | xs = scb->xs; |
| 531 | xs->error = 0; |
| 532 | xs->status = 0; |
| 533 | xs->xs_status = 0; |
| 534 | ahc = device_private( |
| 535 | xs->xs_periph->periph_channel->chan_adapter->adapt_dev); |
| 536 | |
| 537 | if (nsegments != 0) { |
| 538 | struct ahc_dma_seg *sg; |
| 539 | bus_dma_segment_t *end_seg; |
| 540 | int op; |
| 541 | |
| 542 | end_seg = dm_segs + nsegments; |
| 543 | |
| 544 | /* Copy the segments into our SG list */ |
| 545 | sg = scb->sg_list; |
| 546 | while (dm_segs < end_seg) { |
| 547 | uint32_t len; |
| 548 | |
| 549 | sg->addr = ahc_htole32(dm_segs->ds_addr); |
| 550 | len = dm_segs->ds_len |
| 551 | | ((dm_segs->ds_addr >> 8) & AHC_SG_HIGH_ADDR_MASK); |
| 552 | sg->len = ahc_htole32(len); |
| 553 | sg++; |
| 554 | dm_segs++; |
| 555 | } |
| 556 | |
| 557 | /* |
| 558 | * Note where to find the SG entries in bus space. |
| 559 | * We also set the full residual flag which the |
| 560 | * sequencer will clear as soon as a data transfer |
| 561 | * occurs. |
| 562 | */ |
| 563 | scb->hscb->sgptr = ahc_htole32(scb->sg_list_phys|SG_FULL_RESID); |
| 564 | |
| 565 | if (xs->xs_control & XS_CTL_DATA_IN) |
| 566 | op = BUS_DMASYNC_PREREAD; |
| 567 | else |
| 568 | op = BUS_DMASYNC_PREWRITE; |
| 569 | |
| 570 | bus_dmamap_sync(ahc->parent_dmat, scb->dmamap, 0, |
| 571 | scb->dmamap->dm_mapsize, op); |
| 572 | |
| 573 | sg--; |
| 574 | sg->len |= ahc_htole32(AHC_DMA_LAST_SEG); |
| 575 | |
| 576 | /* Copy the first SG into the "current" data pointer area */ |
| 577 | scb->hscb->dataptr = scb->sg_list->addr; |
| 578 | scb->hscb->datacnt = scb->sg_list->len; |
| 579 | } else { |
| 580 | scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL); |
| 581 | scb->hscb->dataptr = 0; |
| 582 | scb->hscb->datacnt = 0; |
| 583 | } |
| 584 | |
| 585 | scb->sg_count = nsegments; |
| 586 | |
| 587 | ahc_lock(ahc, &s); |
| 588 | |
| 589 | /* |
| 590 | * Last time we need to check if this SCB needs to |
| 591 | * be aborted. |
| 592 | */ |
| 593 | if (xs->xs_status & XS_STS_DONE) { |
| 594 | if (nsegments != 0) |
| 595 | bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap); |
| 596 | ahc_free_scb(ahc, scb); |
| 597 | ahc_unlock(ahc, &s); |
| 598 | scsipi_done(xs); |
| 599 | return; |
| 600 | } |
| 601 | |
| 602 | tinfo = ahc_fetch_transinfo(ahc, ahc->channel, |
| 603 | SCSIID_OUR_ID(scb->hscb->scsiid), |
| 604 | SCSIID_TARGET(ahc, scb->hscb->scsiid), |
| 605 | &tstate); |
| 606 | |
| 607 | mask = SCB_GET_TARGET_MASK(ahc, scb); |
| 608 | scb->hscb->scsirate = tinfo->scsirate; |
| 609 | scb->hscb->scsioffset = tinfo->curr.offset; |
| 610 | |
| 611 | if ((tstate->ultraenb & mask) != 0) |
| 612 | scb->hscb->control |= ULTRAENB; |
| 613 | |
| 614 | if ((tstate->discenable & mask) != 0) |
| 615 | scb->hscb->control |= DISCENB; |
| 616 | |
| 617 | if (xs->xs_tag_type) |
| 618 | scb->hscb->control |= xs->xs_tag_type; |
| 619 | |
| 620 | #if 1 /* This looks like it makes sense at first, but it can loop */ |
| 621 | if ((xs->xs_control & XS_CTL_DISCOVERY) && (tinfo->goal.width == 0 |
| 622 | && tinfo->goal.offset == 0 |
| 623 | && tinfo->goal.ppr_options == 0)) { |
| 624 | scb->flags |= SCB_NEGOTIATE; |
| 625 | scb->hscb->control |= MK_MESSAGE; |
| 626 | } else |
| 627 | #endif |
| 628 | if ((tstate->auto_negotiate & mask) != 0) { |
| 629 | scb->flags |= SCB_AUTO_NEGOTIATE; |
| 630 | scb->hscb->control |= MK_MESSAGE; |
| 631 | } |
| 632 | |
| 633 | LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links); |
| 634 | |
| 635 | if (!(xs->xs_control & XS_CTL_POLL)) { |
| 636 | callout_reset(&scb->xs->xs_callout, xs->timeout > 1000000 ? |
| 637 | (xs->timeout / 1000) * hz : (xs->timeout * hz) / 1000, |
| 638 | ahc_timeout, scb); |
| 639 | } |
| 640 | |
| 641 | /* |
| 642 | * We only allow one untagged transaction |
| 643 | * per target in the initiator role unless |
| 644 | * we are storing a full busy target *lun* |
| 645 | * table in SCB space. |
| 646 | */ |
| 647 | if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0 |
| 648 | && (ahc->flags & AHC_SCB_BTT) == 0) { |
| 649 | struct scb_tailq *untagged_q; |
| 650 | int target_offset; |
| 651 | |
| 652 | target_offset = SCB_GET_TARGET_OFFSET(ahc, scb); |
| 653 | untagged_q = &(ahc->untagged_queues[target_offset]); |
| 654 | TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe); |
| 655 | scb->flags |= SCB_UNTAGGEDQ; |
| 656 | if (TAILQ_FIRST(untagged_q) != scb) { |
| 657 | ahc_unlock(ahc, &s); |
| 658 | return; |
| 659 | } |
| 660 | } |
| 661 | scb->flags |= SCB_ACTIVE; |
| 662 | |
| 663 | if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) { |
| 664 | /* Define a mapping from our tag to the SCB. */ |
| 665 | ahc->scb_data->scbindex[scb->hscb->tag] = scb; |
| 666 | ahc_pause(ahc); |
| 667 | if ((ahc->flags & AHC_PAGESCBS) == 0) |
| 668 | ahc_outb(ahc, SCBPTR, scb->hscb->tag); |
| 669 | ahc_outb(ahc, TARG_IMMEDIATE_SCB, scb->hscb->tag); |
| 670 | ahc_unpause(ahc); |
| 671 | } else { |
| 672 | ahc_queue_scb(ahc, scb); |
| 673 | } |
| 674 | |
| 675 | if (!(xs->xs_control & XS_CTL_POLL)) { |
| 676 | ahc_unlock(ahc, &s); |
| 677 | return; |
| 678 | } |
| 679 | |
| 680 | /* |
| 681 | * If we can't use interrupts, poll for completion |
| 682 | */ |
| 683 | |
| 684 | SC_DEBUG(xs->xs_periph, SCSIPI_DB3, ("cmd_poll\n" )); |
| 685 | do { |
| 686 | if (ahc_poll(ahc, xs->timeout)) { |
| 687 | if (!(xs->xs_control & XS_CTL_SILENT)) |
| 688 | printf("cmd fail\n" ); |
| 689 | ahc_timeout(scb); |
| 690 | break; |
| 691 | } |
| 692 | } while (!(xs->xs_status & XS_STS_DONE)); |
| 693 | ahc_unlock(ahc, &s); |
| 694 | |
| 695 | return; |
| 696 | } |
| 697 | |
| 698 | static int |
| 699 | ahc_poll(struct ahc_softc *ahc, int wait) |
| 700 | { |
| 701 | while (--wait) { |
| 702 | DELAY(1000); |
| 703 | if (ahc_inb(ahc, INTSTAT) & INT_PEND) |
| 704 | break; |
| 705 | } |
| 706 | |
| 707 | if (wait == 0) { |
| 708 | printf("%s: board is not responding\n" , ahc_name(ahc)); |
| 709 | return (EIO); |
| 710 | } |
| 711 | |
| 712 | ahc_intr(ahc); |
| 713 | return (0); |
| 714 | } |
| 715 | |
| 716 | static void |
| 717 | ahc_setup_data(struct ahc_softc *ahc, struct scsipi_xfer *xs, |
| 718 | struct scb *scb) |
| 719 | { |
| 720 | struct hardware_scb *hscb; |
| 721 | |
| 722 | hscb = scb->hscb; |
| 723 | xs->resid = xs->status = 0; |
| 724 | |
| 725 | hscb->cdb_len = xs->cmdlen; |
| 726 | if (hscb->cdb_len > sizeof(hscb->cdb32)) { |
| 727 | u_long s; |
| 728 | |
| 729 | ahc_set_transaction_status(scb, CAM_REQ_INVALID); |
| 730 | ahc_lock(ahc, &s); |
| 731 | ahc_free_scb(ahc, scb); |
| 732 | ahc_unlock(ahc, &s); |
| 733 | scsipi_done(xs); |
| 734 | return; |
| 735 | } |
| 736 | |
| 737 | if (hscb->cdb_len > 12) { |
| 738 | memcpy(hscb->cdb32, xs->cmd, hscb->cdb_len); |
| 739 | scb->flags |= SCB_CDB32_PTR; |
| 740 | } else { |
| 741 | memcpy(hscb->shared_data.cdb, xs->cmd, hscb->cdb_len); |
| 742 | } |
| 743 | |
| 744 | /* Only use S/G if there is a transfer */ |
| 745 | if (xs->datalen) { |
| 746 | int error; |
| 747 | |
| 748 | error = bus_dmamap_load(ahc->parent_dmat, |
| 749 | scb->dmamap, xs->data, |
| 750 | xs->datalen, NULL, |
| 751 | ((xs->xs_control & XS_CTL_NOSLEEP) ? |
| 752 | BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | |
| 753 | BUS_DMA_STREAMING | |
| 754 | ((xs->xs_control & XS_CTL_DATA_IN) ? |
| 755 | BUS_DMA_READ : BUS_DMA_WRITE)); |
| 756 | if (error) { |
| 757 | #ifdef AHC_DEBUG |
| 758 | printf("%s: in ahc_setup_data(): bus_dmamap_load() " |
| 759 | "= %d\n" , |
| 760 | ahc_name(ahc), error); |
| 761 | #endif |
| 762 | xs->error = XS_RESOURCE_SHORTAGE; |
| 763 | scsipi_done(xs); |
| 764 | return; |
| 765 | } |
| 766 | ahc_execute_scb(scb, |
| 767 | scb->dmamap->dm_segs, |
| 768 | scb->dmamap->dm_nsegs); |
| 769 | } else { |
| 770 | ahc_execute_scb(scb, NULL, 0); |
| 771 | } |
| 772 | } |
| 773 | |
| 774 | static void |
| 775 | ahc_set_recoveryscb(struct ahc_softc *ahc, struct scb *scb) { |
| 776 | |
| 777 | if ((scb->flags & SCB_RECOVERY_SCB) == 0) { |
| 778 | struct scb *list_scb; |
| 779 | |
| 780 | scb->flags |= SCB_RECOVERY_SCB; |
| 781 | |
| 782 | /* |
| 783 | * Take all queued, but not sent SCBs out of the equation. |
| 784 | * Also ensure that no new CCBs are queued to us while we |
| 785 | * try to fix this problem. |
| 786 | */ |
| 787 | scsipi_channel_freeze(&ahc->sc_channel, 1); |
| 788 | if (ahc->features & AHC_TWIN) |
| 789 | scsipi_channel_freeze(&ahc->sc_channel_b, 1); |
| 790 | |
| 791 | /* |
| 792 | * Go through all of our pending SCBs and remove |
| 793 | * any scheduled timeouts for them. We will reschedule |
| 794 | * them after we've successfully fixed this problem. |
| 795 | */ |
| 796 | LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) { |
| 797 | callout_stop(&list_scb->xs->xs_callout); |
| 798 | } |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | void |
| 803 | ahc_timeout(void *arg) |
| 804 | { |
| 805 | struct scb *scb; |
| 806 | struct ahc_softc *ahc; |
| 807 | u_long s; |
| 808 | int found; |
| 809 | u_int last_phase; |
| 810 | int target; |
| 811 | int lun; |
| 812 | int i; |
| 813 | char channel; |
| 814 | |
| 815 | scb = arg; |
| 816 | ahc = scb->ahc_softc; |
| 817 | |
| 818 | ahc_lock(ahc, &s); |
| 819 | |
| 820 | ahc_pause_and_flushwork(ahc); |
| 821 | |
| 822 | if ((scb->flags & SCB_ACTIVE) == 0) { |
| 823 | /* Previous timeout took care of me already */ |
| 824 | printf("%s: Timedout SCB already complete. " |
| 825 | "Interrupts may not be functioning.\n" , ahc_name(ahc)); |
| 826 | ahc_unpause(ahc); |
| 827 | ahc_unlock(ahc, &s); |
| 828 | return; |
| 829 | } |
| 830 | |
| 831 | target = SCB_GET_TARGET(ahc, scb); |
| 832 | channel = SCB_GET_CHANNEL(ahc, scb); |
| 833 | lun = SCB_GET_LUN(scb); |
| 834 | |
| 835 | ahc_print_path(ahc, scb); |
| 836 | printf("SCB 0x%x - timed out\n" , scb->hscb->tag); |
| 837 | ahc_dump_card_state(ahc); |
| 838 | last_phase = ahc_inb(ahc, LASTPHASE); |
| 839 | if (scb->sg_count > 0) { |
| 840 | for (i = 0; i < scb->sg_count; i++) { |
| 841 | printf("sg[%d] - Addr 0x%x : Length %d\n" , |
| 842 | i, |
| 843 | scb->sg_list[i].addr, |
| 844 | scb->sg_list[i].len & AHC_SG_LEN_MASK); |
| 845 | } |
| 846 | } |
| 847 | if (scb->flags & (SCB_DEVICE_RESET|SCB_ABORT)) { |
| 848 | /* |
| 849 | * Been down this road before. |
| 850 | * Do a full bus reset. |
| 851 | */ |
| 852 | bus_reset: |
| 853 | ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); |
| 854 | found = ahc_reset_channel(ahc, channel, /*Initiate Reset*/TRUE); |
| 855 | printf("%s: Issued Channel %c Bus Reset. " |
| 856 | "%d SCBs aborted\n" , ahc_name(ahc), channel, found); |
| 857 | } else { |
| 858 | /* |
| 859 | * If we are a target, transition to bus free and report |
| 860 | * the timeout. |
| 861 | * |
| 862 | * The target/initiator that is holding up the bus may not |
| 863 | * be the same as the one that triggered this timeout |
| 864 | * (different commands have different timeout lengths). |
| 865 | * If the bus is idle and we are acting as the initiator |
| 866 | * for this request, queue a BDR message to the timed out |
| 867 | * target. Otherwise, if the timed out transaction is |
| 868 | * active: |
| 869 | * Initiator transaction: |
| 870 | * Stuff the message buffer with a BDR message and assert |
| 871 | * ATN in the hopes that the target will let go of the bus |
| 872 | * and go to the mesgout phase. If this fails, we'll |
| 873 | * get another timeout 2 seconds later which will attempt |
| 874 | * a bus reset. |
| 875 | * |
| 876 | * Target transaction: |
| 877 | * Transition to BUS FREE and report the error. |
| 878 | * It's good to be the target! |
| 879 | */ |
| 880 | u_int active_scb_index; |
| 881 | u_int saved_scbptr; |
| 882 | |
| 883 | saved_scbptr = ahc_inb(ahc, SCBPTR); |
| 884 | active_scb_index = ahc_inb(ahc, SCB_TAG); |
| 885 | |
| 886 | if ((ahc_inb(ahc, SEQ_FLAGS) & NOT_IDENTIFIED) == 0 |
| 887 | && (active_scb_index < ahc->scb_data->numscbs)) { |
| 888 | struct scb *active_scb; |
| 889 | |
| 890 | /* |
| 891 | * If the active SCB is not us, assume that |
| 892 | * the active SCB has a longer timeout than |
| 893 | * the timedout SCB, and wait for the active |
| 894 | * SCB to timeout. |
| 895 | */ |
| 896 | active_scb = ahc_lookup_scb(ahc, active_scb_index); |
| 897 | if (active_scb != scb) { |
| 898 | uint64_t newtimeout; |
| 899 | |
| 900 | ahc_print_path(ahc, scb); |
| 901 | printf("Other SCB Timeout%s" , |
| 902 | (scb->flags & SCB_OTHERTCL_TIMEOUT) != 0 |
| 903 | ? " again\n" : "\n" ); |
| 904 | scb->flags |= SCB_OTHERTCL_TIMEOUT; |
| 905 | newtimeout = MAX(active_scb->xs->timeout, |
| 906 | scb->xs->timeout); |
| 907 | callout_reset(&scb->xs->xs_callout, |
| 908 | newtimeout > 1000000 ? |
| 909 | (newtimeout / 1000) * hz : |
| 910 | (newtimeout * hz) / 1000, |
| 911 | ahc_timeout, scb); |
| 912 | ahc_unpause(ahc); |
| 913 | ahc_unlock(ahc, &s); |
| 914 | return; |
| 915 | } |
| 916 | |
| 917 | /* It's us */ |
| 918 | if ((scb->flags & SCB_TARGET_SCB) != 0) { |
| 919 | |
| 920 | /* |
| 921 | * Send back any queued up transactions |
| 922 | * and properly record the error condition. |
| 923 | */ |
| 924 | ahc_abort_scbs(ahc, SCB_GET_TARGET(ahc, scb), |
| 925 | SCB_GET_CHANNEL(ahc, scb), |
| 926 | SCB_GET_LUN(scb), |
| 927 | scb->hscb->tag, |
| 928 | ROLE_TARGET, |
| 929 | CAM_CMD_TIMEOUT); |
| 930 | |
| 931 | /* Will clear us from the bus */ |
| 932 | ahc_restart(ahc); |
| 933 | ahc_unlock(ahc, &s); |
| 934 | return; |
| 935 | } |
| 936 | |
| 937 | ahc_set_recoveryscb(ahc, active_scb); |
| 938 | ahc_outb(ahc, MSG_OUT, HOST_MSG); |
| 939 | ahc_outb(ahc, SCSISIGO, last_phase|ATNO); |
| 940 | ahc_print_path(ahc, active_scb); |
| 941 | printf("BDR message in message buffer\n" ); |
| 942 | active_scb->flags |= SCB_DEVICE_RESET; |
| 943 | callout_reset(&active_scb->xs->xs_callout, |
| 944 | 2 * hz, ahc_timeout, active_scb); |
| 945 | ahc_unpause(ahc); |
| 946 | } else { |
| 947 | int disconnected; |
| 948 | |
| 949 | /* XXX Shouldn't panic. Just punt instead? */ |
| 950 | if ((scb->flags & SCB_TARGET_SCB) != 0) |
| 951 | panic("Timed-out target SCB but bus idle" ); |
| 952 | |
| 953 | if (last_phase != P_BUSFREE |
| 954 | && (ahc_inb(ahc, SSTAT0) & TARGET) != 0) { |
| 955 | /* XXX What happened to the SCB? */ |
| 956 | /* Hung target selection. Goto busfree */ |
| 957 | printf("%s: Hung target selection\n" , |
| 958 | ahc_name(ahc)); |
| 959 | ahc_restart(ahc); |
| 960 | ahc_unlock(ahc, &s); |
| 961 | return; |
| 962 | } |
| 963 | |
| 964 | if (ahc_search_qinfifo(ahc, target, channel, lun, |
| 965 | scb->hscb->tag, ROLE_INITIATOR, |
| 966 | /*status*/0, SEARCH_COUNT) > 0) { |
| 967 | disconnected = FALSE; |
| 968 | } else { |
| 969 | disconnected = TRUE; |
| 970 | } |
| 971 | |
| 972 | if (disconnected) { |
| 973 | |
| 974 | ahc_set_recoveryscb(ahc, scb); |
| 975 | /* |
| 976 | * Actually re-queue this SCB in an attempt |
| 977 | * to select the device before it reconnects. |
| 978 | * In either case (selection or reselection), |
| 979 | * we will now issue a target reset to the |
| 980 | * timed-out device. |
| 981 | * |
| 982 | * Set the MK_MESSAGE control bit indicating |
| 983 | * that we desire to send a message. We |
| 984 | * also set the disconnected flag since |
| 985 | * in the paging case there is no guarantee |
| 986 | * that our SCB control byte matches the |
| 987 | * version on the card. We don't want the |
| 988 | * sequencer to abort the command thinking |
| 989 | * an unsolicited reselection occurred. |
| 990 | */ |
| 991 | scb->hscb->control |= MK_MESSAGE|DISCONNECTED; |
| 992 | scb->flags |= SCB_DEVICE_RESET; |
| 993 | |
| 994 | /* |
| 995 | * Remove any cached copy of this SCB in the |
| 996 | * disconnected list in preparation for the |
| 997 | * queuing of our abort SCB. We use the |
| 998 | * same element in the SCB, SCB_NEXT, for |
| 999 | * both the qinfifo and the disconnected list. |
| 1000 | */ |
| 1001 | ahc_search_disc_list(ahc, target, channel, |
| 1002 | lun, scb->hscb->tag, |
| 1003 | /*stop_on_first*/TRUE, |
| 1004 | /*remove*/TRUE, |
| 1005 | /*save_state*/FALSE); |
| 1006 | |
| 1007 | /* |
| 1008 | * In the non-paging case, the sequencer will |
| 1009 | * never re-reference the in-core SCB. |
| 1010 | * To make sure we are notified during |
| 1011 | * reslection, set the MK_MESSAGE flag in |
| 1012 | * the card's copy of the SCB. |
| 1013 | */ |
| 1014 | if ((ahc->flags & AHC_PAGESCBS) == 0) { |
| 1015 | ahc_outb(ahc, SCBPTR, scb->hscb->tag); |
| 1016 | ahc_outb(ahc, SCB_CONTROL, |
| 1017 | ahc_inb(ahc, SCB_CONTROL) |
| 1018 | | MK_MESSAGE); |
| 1019 | } |
| 1020 | |
| 1021 | /* |
| 1022 | * Clear out any entries in the QINFIFO first |
| 1023 | * so we are the next SCB for this target |
| 1024 | * to run. |
| 1025 | */ |
| 1026 | ahc_search_qinfifo(ahc, |
| 1027 | SCB_GET_TARGET(ahc, scb), |
| 1028 | channel, SCB_GET_LUN(scb), |
| 1029 | SCB_LIST_NULL, |
| 1030 | ROLE_INITIATOR, |
| 1031 | CAM_REQUEUE_REQ, |
| 1032 | SEARCH_COMPLETE); |
| 1033 | ahc_print_path(ahc, scb); |
| 1034 | printf("Queuing a BDR SCB\n" ); |
| 1035 | ahc_qinfifo_requeue_tail(ahc, scb); |
| 1036 | ahc_outb(ahc, SCBPTR, saved_scbptr); |
| 1037 | callout_reset(&scb->xs->xs_callout, 2 * hz, |
| 1038 | ahc_timeout, scb); |
| 1039 | ahc_unpause(ahc); |
| 1040 | } else { |
| 1041 | /* Go "immediatly" to the bus reset */ |
| 1042 | /* This shouldn't happen */ |
| 1043 | ahc_set_recoveryscb(ahc, scb); |
| 1044 | ahc_print_path(ahc, scb); |
| 1045 | printf("SCB %d: Immediate reset. " |
| 1046 | "Flags = 0x%x\n" , scb->hscb->tag, |
| 1047 | scb->flags); |
| 1048 | goto bus_reset; |
| 1049 | } |
| 1050 | } |
| 1051 | } |
| 1052 | ahc_unlock(ahc, &s); |
| 1053 | } |
| 1054 | |
| 1055 | void |
| 1056 | ahc_platform_set_tags(struct ahc_softc *ahc, |
| 1057 | struct ahc_devinfo *devinfo, int enable) |
| 1058 | { |
| 1059 | struct ahc_tmode_tstate *tstate; |
| 1060 | |
| 1061 | ahc_fetch_transinfo(ahc, devinfo->channel, devinfo->our_scsiid, |
| 1062 | devinfo->target, &tstate); |
| 1063 | |
| 1064 | if (enable) |
| 1065 | tstate->tagenable |= devinfo->target_mask; |
| 1066 | else |
| 1067 | tstate->tagenable &= ~devinfo->target_mask; |
| 1068 | } |
| 1069 | |
| 1070 | int |
| 1071 | ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg) |
| 1072 | { |
| 1073 | if (sizeof(struct ahc_platform_data) == 0) |
| 1074 | return 0; |
| 1075 | ahc->platform_data = malloc(sizeof(struct ahc_platform_data), M_DEVBUF, |
| 1076 | M_NOWAIT); |
| 1077 | if (ahc->platform_data == NULL) |
| 1078 | return (ENOMEM); |
| 1079 | return (0); |
| 1080 | } |
| 1081 | |
| 1082 | void |
| 1083 | ahc_platform_free(struct ahc_softc *ahc) |
| 1084 | { |
| 1085 | if (sizeof(struct ahc_platform_data) == 0) |
| 1086 | return; |
| 1087 | free(ahc->platform_data, M_DEVBUF); |
| 1088 | } |
| 1089 | |
| 1090 | int |
| 1091 | ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc) |
| 1092 | { |
| 1093 | return (0); |
| 1094 | } |
| 1095 | |
| 1096 | int |
| 1097 | ahc_detach(struct ahc_softc *ahc, int flags) |
| 1098 | { |
| 1099 | int rv = 0; |
| 1100 | |
| 1101 | ahc_intr_enable(ahc, FALSE); |
| 1102 | if (ahc->sc_child != NULL) |
| 1103 | rv = config_detach(ahc->sc_child, flags); |
| 1104 | if (rv == 0 && ahc->sc_child_b != NULL) |
| 1105 | rv = config_detach(ahc->sc_child_b, flags); |
| 1106 | |
| 1107 | pmf_device_deregister(ahc->sc_dev); |
| 1108 | ahc_free(ahc); |
| 1109 | |
| 1110 | return (rv); |
| 1111 | } |
| 1112 | |
| 1113 | |
| 1114 | void |
| 1115 | ahc_send_async(struct ahc_softc *ahc, char channel, u_int target, u_int lun, |
| 1116 | ac_code code, void *opt_arg) |
| 1117 | { |
| 1118 | struct ahc_tmode_tstate *tstate; |
| 1119 | struct ahc_initiator_tinfo *tinfo; |
| 1120 | struct ahc_devinfo devinfo; |
| 1121 | struct scsipi_channel *chan; |
| 1122 | struct scsipi_xfer_mode xm; |
| 1123 | |
| 1124 | chan = channel == 'B' ? &ahc->sc_channel_b : &ahc->sc_channel; |
| 1125 | switch (code) { |
| 1126 | case AC_TRANSFER_NEG: |
| 1127 | tinfo = ahc_fetch_transinfo(ahc, channel, ahc->our_id, target, |
| 1128 | &tstate); |
| 1129 | ahc_compile_devinfo(&devinfo, ahc->our_id, target, lun, |
| 1130 | channel, ROLE_UNKNOWN); |
| 1131 | /* |
| 1132 | * Don't bother if negotiating. XXX? |
| 1133 | */ |
| 1134 | if (tinfo->curr.period != tinfo->goal.period |
| 1135 | || tinfo->curr.width != tinfo->goal.width |
| 1136 | || tinfo->curr.offset != tinfo->goal.offset |
| 1137 | || tinfo->curr.ppr_options != tinfo->goal.ppr_options) |
| 1138 | break; |
| 1139 | xm.xm_target = target; |
| 1140 | xm.xm_mode = 0; |
| 1141 | xm.xm_period = tinfo->curr.period; |
| 1142 | xm.xm_offset = tinfo->curr.offset; |
| 1143 | if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) |
| 1144 | xm.xm_mode |= PERIPH_CAP_WIDE16; |
| 1145 | if (tinfo->curr.period) |
| 1146 | xm.xm_mode |= PERIPH_CAP_SYNC; |
| 1147 | if (tstate->tagenable & devinfo.target_mask) |
| 1148 | xm.xm_mode |= PERIPH_CAP_TQING; |
| 1149 | if (tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ) |
| 1150 | xm.xm_mode |= PERIPH_CAP_DT; |
| 1151 | scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, &xm); |
| 1152 | break; |
| 1153 | case AC_BUS_RESET: |
| 1154 | scsipi_async_event(chan, ASYNC_EVENT_RESET, NULL); |
| 1155 | case AC_SENT_BDR: |
| 1156 | default: |
| 1157 | break; |
| 1158 | } |
| 1159 | } |
| 1160 | |