aic7xxx_osm.c revision 66647
1/* 2 * Bus independent FreeBSD shim for the aic7xxx based adaptec SCSI controllers 3 * 4 * Copyright (c) 1994, 1995, 1996, 1997, 1998, 1999, 2000 Justin T. Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * Alternatively, this software may be distributed under the terms of the 17 * GNU Public License ("GPL"). 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $Id$ 32 * 33 * $FreeBSD: head/sys/dev/aic7xxx/aic7xxx_osm.c 66647 2000-10-05 04:24:14Z gibbs $ 34 */ 35 36#include <dev/aic7xxx/aic7xxx_freebsd.h> 37#include <dev/aic7xxx/aic7xxx_inline.h> 38 39#include <sys/eventhandler.h> 40 41#ifndef AHC_TMODE_ENABLE 42#define AHC_TMODE_ENABLE 0 43#endif 44 45#define ccb_scb_ptr spriv_ptr0 46#define ccb_ahc_ptr spriv_ptr1 47 48#ifdef AHC_DEBUG 49static int ahc_debug = AHC_DEBUG; 50#endif 51 52static void ahc_freebsd_intr(void *arg); 53 54#if UNUSED 55static void ahc_dump_targcmd(struct target_cmd *cmd); 56#endif 57static void ahc_action(struct cam_sim *sim, union ccb *ccb); 58static void ahc_get_tran_settings(struct ahc_softc *ahc, 59 int our_id, char channel, 60 struct ccb_trans_settings *cts); 61static void ahc_async(void *callback_arg, uint32_t code, 62 struct cam_path *path, void *arg); 63static void ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, 64 int nsegments, int error); 65static void ahc_poll(struct cam_sim *sim); 66static void ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim, 67 struct ccb_scsiio *csio, struct scb *scb); 68static void ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, 69 union ccb *ccb); 70static int ahc_create_path(struct ahc_softc *ahc, 71 char channel, u_int target, u_int lun, 72 struct cam_path **path); 73 74static void ahc_set_recoveryscb(struct ahc_softc *ahc, struct scb *scb); 75 76static int 77ahc_create_path(struct ahc_softc *ahc, char channel, u_int target, 78 u_int lun, struct cam_path **path) 79{ 80 path_id_t path_id; 81 82 if (channel == 'B') 83 path_id = cam_sim_path(ahc->platform_data->sim_b); 84 else 85 path_id = cam_sim_path(ahc->platform_data->sim); 86 87 return (xpt_create_path(path, /*periph*/NULL, 88 path_id, target, lun)); 89} 90 91/* 92 * Attach all the sub-devices we can find 93 */ 94int 95ahc_attach(struct ahc_softc *ahc) 96{ 97 char ahc_info[256]; 98 struct ccb_setasync csa; 99 struct cam_devq *devq; 100 int bus_id; 101 int bus_id2; 102 struct cam_sim *sim; 103 struct cam_sim *sim2; 104 struct cam_path *path; 105 struct cam_path *path2; 106 long s; 107 int count; 108 int error; 109 110 count = 0; 111 sim = NULL; 112 sim2 = NULL; 113 114 ahc_controller_info(ahc, ahc_info); 115 printf("%s\n", ahc_info); 116 ahc_lock(ahc, &s); 117 /* Hook up our interrupt handler */ 118 if ((error = bus_setup_intr(ahc->dev_softc, ahc->platform_data->irq, 119 INTR_TYPE_CAM, ahc_freebsd_intr, ahc, 120 &ahc->platform_data->ih)) != 0) { 121 device_printf(ahc->dev_softc, "bus_setup_intr() failed: %d\n", 122 error); 123 goto fail; 124 } 125 126 /* 127 * Attach secondary channel first if the user has 128 * declared it the primary channel. 129 */ 130 if ((ahc->flags & AHC_CHANNEL_B_PRIMARY) != 0) { 131 bus_id = 1; 132 bus_id2 = 0; 133 } else { 134 bus_id = 0; 135 bus_id2 = 1; 136 } 137 138 /* 139 * Create the device queue for our SIM(s). 140 */ 141 devq = cam_simq_alloc(AHC_SCB_MAX - 1); 142 if (devq == NULL) 143 goto fail; 144 145 /* 146 * Construct our first channel SIM entry 147 */ 148 sim = cam_sim_alloc(ahc_action, ahc_poll, "ahc", ahc, 149 device_get_unit(ahc->dev_softc), 150 1, AHC_SCB_MAX - 1, devq); 151 if (sim == NULL) { 152 cam_simq_free(devq); 153 goto fail; 154 } 155 156 if (xpt_bus_register(sim, bus_id) != CAM_SUCCESS) { 157 cam_sim_free(sim, /*free_devq*/TRUE); 158 sim = NULL; 159 goto fail; 160 } 161 162 if (xpt_create_path(&path, /*periph*/NULL, 163 cam_sim_path(sim), CAM_TARGET_WILDCARD, 164 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 165 xpt_bus_deregister(cam_sim_path(sim)); 166 cam_sim_free(sim, /*free_devq*/TRUE); 167 sim = NULL; 168 goto fail; 169 } 170 171 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); 172 csa.ccb_h.func_code = XPT_SASYNC_CB; 173 csa.event_enable = AC_LOST_DEVICE; 174 csa.callback = ahc_async; 175 csa.callback_arg = sim; 176 xpt_action((union ccb *)&csa); 177 count++; 178 179 if (ahc->features & AHC_TWIN) { 180 sim2 = cam_sim_alloc(ahc_action, ahc_poll, "ahc", 181 ahc, device_get_unit(ahc->dev_softc), 1, 182 AHC_SCB_MAX - 1, devq); 183 184 if (sim2 == NULL) { 185 printf("ahc_attach: Unable to attach second " 186 "bus due to resource shortage"); 187 goto fail; 188 } 189 190 if (xpt_bus_register(sim2, bus_id2) != CAM_SUCCESS) { 191 printf("ahc_attach: Unable to attach second " 192 "bus due to resource shortage"); 193 /* 194 * We do not want to destroy the device queue 195 * because the first bus is using it. 196 */ 197 cam_sim_free(sim2, /*free_devq*/FALSE); 198 goto fail; 199 } 200 201 if (xpt_create_path(&path2, /*periph*/NULL, 202 cam_sim_path(sim2), 203 CAM_TARGET_WILDCARD, 204 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 205 xpt_bus_deregister(cam_sim_path(sim2)); 206 cam_sim_free(sim2, /*free_devq*/FALSE); 207 sim2 = NULL; 208 goto fail; 209 } 210 xpt_setup_ccb(&csa.ccb_h, path2, /*priority*/5); 211 csa.ccb_h.func_code = XPT_SASYNC_CB; 212 csa.event_enable = AC_LOST_DEVICE; 213 csa.callback = ahc_async; 214 csa.callback_arg = sim2; 215 xpt_action((union ccb *)&csa); 216 count++; 217 } 218 219fail: 220 if ((ahc->flags & AHC_CHANNEL_B_PRIMARY) != 0) { 221 ahc->platform_data->sim_b = sim; 222 ahc->platform_data->path_b = path; 223 ahc->platform_data->sim = sim2; 224 ahc->platform_data->path = path2; 225 } else { 226 ahc->platform_data->sim = sim; 227 ahc->platform_data->path = path; 228 ahc->platform_data->sim_b = sim2; 229 ahc->platform_data->path_b = path2; 230 } 231 ahc_unlock(ahc, &s); 232 233 if (count != 0) 234 /* We have to wait until after any system dumps... */ 235 EVENTHANDLER_REGISTER(shutdown_final, ahc_shutdown, 236 ahc, SHUTDOWN_PRI_DEFAULT); 237 238 return (count); 239} 240 241/* 242 * Catch an interrupt from the adapter 243 */ 244void 245ahc_freebsd_intr(void *arg) 246{ 247 struct ahc_softc *ahc; 248 249 ahc = (struct ahc_softc *)arg; 250 ahc_intr(ahc); 251} 252 253/* 254 * We have an scb which has been processed by the 255 * adaptor, now we look to see how the operation 256 * went. 257 */ 258void 259ahc_done(struct ahc_softc *ahc, struct scb *scb) 260{ 261 union ccb *ccb; 262 263 CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE, 264 ("ahc_done - scb %d\n", scb->hscb->tag)); 265 266 ccb = scb->io_ctx; 267 LIST_REMOVE(scb, pending_links); 268 if (ccb->ccb_h.func_code == XPT_SCSI_IO 269 && ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0 270 || ccb->csio.tag_action == CAM_TAG_ACTION_NONE) 271 && (ahc->features & AHC_SCB_BTT) == 0) { 272 struct scb_tailq *untagged_q; 273 274 untagged_q = &ahc->untagged_queues[ccb->ccb_h.target_id]; 275 TAILQ_REMOVE(untagged_q, scb, links.tqe); 276 ahc_run_untagged_queue(ahc, untagged_q); 277 } 278 279 untimeout(ahc_timeout, (caddr_t)scb, ccb->ccb_h.timeout_ch); 280 281 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 282 bus_dmasync_op_t op; 283 284 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) 285 op = BUS_DMASYNC_POSTREAD; 286 else 287 op = BUS_DMASYNC_POSTWRITE; 288 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op); 289 bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap); 290 } 291 292 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) { 293 if (ahc_get_transaction_status(scb) == CAM_REQ_INPROG) 294 ccb->ccb_h.status |= CAM_REQ_CMP; 295 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 296 ahc_free_scb(ahc, scb); 297 xpt_done(ccb); 298 return; 299 } 300 301 /* 302 * If the recovery SCB completes, we have to be 303 * out of our timeout. 304 */ 305 if ((scb->flags & SCB_RECOVERY_SCB) != 0) { 306 struct scb *list_scb; 307 308 /* 309 * We were able to complete the command successfully, 310 * so reinstate the timeouts for all other pending 311 * commands. 312 */ 313 LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) { 314 union ccb *ccb; 315 316 ccb = list_scb->io_ctx; 317 ccb->ccb_h.timeout_ch = 318 timeout(ahc_timeout, list_scb, 319 (ccb->ccb_h.timeout * hz)/1000); 320 } 321 322 /* 323 * Ensure that we didn't put a second instance of this 324 * SCB into the QINFIFO. 325 */ 326 ahc_search_qinfifo(ahc, SCB_GET_TARGET(ahc, scb), 327 SCB_GET_CHANNEL(ahc, scb), 328 SCB_GET_LUN(scb), scb->hscb->tag, 329 ROLE_INITIATOR, /*status*/0, 330 SEARCH_REMOVE); 331 if (ahc_get_transaction_status(scb) == CAM_BDR_SENT 332 || ahc_get_transaction_status(scb) == CAM_REQ_ABORTED) 333 ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); 334 ahc_print_path(ahc, scb); 335 printf("no longer in timeout, status = %x\n", 336 ccb->ccb_h.status); 337 } 338 339 /* Don't clobber any existing error state */ 340 if (ahc_get_transaction_status(scb) == CAM_REQ_INPROG) { 341 ccb->ccb_h.status |= CAM_REQ_CMP; 342 } else if ((scb->flags & SCB_SENSE) != 0) { 343 /* 344 * We performed autosense retrieval. 345 * 346 * Zero any sense not transferred by the 347 * device. The SCSI spec mandates that any 348 * untransfered data should be assumed to be 349 * zero. Complete the 'bounce' of sense information 350 * through buffers accessible via bus-space by 351 * copying it into the clients csio. 352 */ 353 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data)); 354 memcpy(&ccb->csio.sense_data, 355 &ahc->scb_data->sense[scb->hscb->tag], 356 (scb->sg_list->len & AHC_SG_LEN_MASK) 357 - ccb->csio.sense_resid); 358 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID; 359 } 360 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 361 ahc_free_scb(ahc, scb); 362 xpt_done(ccb); 363} 364 365static void 366ahc_action(struct cam_sim *sim, union ccb *ccb) 367{ 368 struct ahc_softc *ahc; 369 struct tmode_lstate *lstate; 370 u_int target_id; 371 u_int our_id; 372 long s; 373 374 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_action\n")); 375 376 ahc = (struct ahc_softc *)cam_sim_softc(sim); 377 378 target_id = ccb->ccb_h.target_id; 379 our_id = SIM_SCSI_ID(ahc, sim); 380 381 switch (ccb->ccb_h.func_code) { 382 /* Common cases first */ 383 case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */ 384 case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/ 385 { 386 struct tmode_tstate *tstate; 387 cam_status status; 388 389 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate, 390 &lstate, TRUE); 391 392 if (status != CAM_REQ_CMP) { 393 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) { 394 /* Response from the black hole device */ 395 tstate = NULL; 396 lstate = ahc->black_hole; 397 } else { 398 ccb->ccb_h.status = status; 399 xpt_done(ccb); 400 break; 401 } 402 } 403 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) { 404 405 ahc_lock(ahc, &s); 406 SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h, 407 sim_links.sle); 408 ccb->ccb_h.status = CAM_REQ_INPROG; 409 if ((ahc->flags & AHC_TQINFIFO_BLOCKED) != 0) 410 ahc_run_tqinfifo(ahc, /*paused*/FALSE); 411 ahc_unlock(ahc, &s); 412 break; 413 } 414 415 /* 416 * The target_id represents the target we attempt to 417 * select. In target mode, this is the initiator of 418 * the original command. 419 */ 420 our_id = target_id; 421 target_id = ccb->csio.init_id; 422 /* FALLTHROUGH */ 423 } 424 case XPT_SCSI_IO: /* Execute the requested I/O operation */ 425 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */ 426 { 427 struct scb *scb; 428 struct hardware_scb *hscb; 429 struct ahc_initiator_tinfo *tinfo; 430 struct tmode_tstate *tstate; 431 uint16_t mask; 432 433 /* 434 * get an scb to use. 435 */ 436 if ((scb = ahc_get_scb(ahc)) == NULL) { 437 438 ahc_lock(ahc, &s); 439 ahc->flags |= AHC_RESOURCE_SHORTAGE; 440 ahc_unlock(ahc, &s); 441 xpt_freeze_simq(sim, /*count*/1); 442 ccb->ccb_h.status = CAM_REQUEUE_REQ; 443 xpt_done(ccb); 444 return; 445 } 446 447 hscb = scb->hscb; 448 449 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, 450 ("start scb(%p)\n", scb)); 451 scb->io_ctx = ccb; 452 /* 453 * So we can find the SCB when an abort is requested 454 */ 455 ccb->ccb_h.ccb_scb_ptr = scb; 456 ccb->ccb_h.ccb_ahc_ptr = ahc; 457 458 /* 459 * Put all the arguments for the xfer in the scb 460 */ 461 hscb->control = 0; 462 hscb->scsiid = BUILD_SCSIID(ahc, sim, target_id, our_id); 463 hscb->lun = ccb->ccb_h.target_lun; 464 mask = SCB_GET_TARGET_MASK(ahc, scb); 465 tinfo = ahc_fetch_transinfo(ahc, SIM_CHANNEL(ahc, sim), our_id, 466 target_id, &tstate); 467 468 hscb->scsirate = tinfo->scsirate; 469 hscb->scsioffset = tinfo->current.offset; 470 if ((tstate->ultraenb & mask) != 0) 471 hscb->control |= ULTRAENB; 472 473 if ((tstate->discenable & mask) != 0 474 && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0) 475 hscb->control |= DISCENB; 476 477 if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0 478 && (tinfo->current.width != 0 || tinfo->current.period != 0)) { 479 scb->flags |= SCB_NEGOTIATE; 480 hscb->control |= MK_MESSAGE; 481 } 482 483 if (ccb->ccb_h.func_code == XPT_RESET_DEV) { 484 hscb->cdb_len = 0; 485 scb->flags |= SCB_DEVICE_RESET; 486 hscb->control |= MK_MESSAGE; 487 ahc_execute_scb(scb, NULL, 0, 0); 488 } else { 489 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) { 490 struct target_data *tdata; 491 492 tdata = &hscb->shared_data.tdata; 493 if (ahc->pending_device == lstate) { 494 scb->flags |= SCB_TARGET_IMMEDIATE; 495 ahc->pending_device = NULL; 496 } 497 hscb->control |= TARGET_SCB; 498 tdata->target_phases = IDENTIFY_SEEN; 499 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) { 500 tdata->target_phases |= SPHASE_PENDING; 501 tdata->scsi_status = 502 ccb->csio.scsi_status; 503 } 504 tdata->initiator_tag = ccb->csio.tag_id; 505 } 506 if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) 507 hscb->control |= ccb->csio.tag_action; 508 509 ahc_setup_data(ahc, sim, &ccb->csio, scb); 510 } 511 break; 512 } 513 case XPT_NOTIFY_ACK: 514 case XPT_IMMED_NOTIFY: 515 { 516 struct tmode_tstate *tstate; 517 struct tmode_lstate *lstate; 518 cam_status status; 519 520 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate, 521 &lstate, TRUE); 522 523 if (status != CAM_REQ_CMP) { 524 ccb->ccb_h.status = status; 525 xpt_done(ccb); 526 break; 527 } 528 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h, 529 sim_links.sle); 530 ccb->ccb_h.status = CAM_REQ_INPROG; 531 ahc_send_lstate_events(ahc, lstate); 532 break; 533 } 534 case XPT_EN_LUN: /* Enable LUN as a target */ 535 ahc_handle_en_lun(ahc, sim, ccb); 536 xpt_done(ccb); 537 break; 538 case XPT_ABORT: /* Abort the specified CCB */ 539 { 540 ahc_abort_ccb(ahc, sim, ccb); 541 break; 542 } 543 case XPT_SET_TRAN_SETTINGS: 544 { 545#ifdef AHC_NEW_TRAN_SETTINGS 546 struct ahc_devinfo devinfo; 547 struct ccb_trans_settings *cts; 548 struct ccb_trans_settings_scsi *scsi; 549 struct ccb_trans_settings_spi *spi; 550 struct ahc_initiator_tinfo *tinfo; 551 struct tmode_tstate *tstate; 552 uint16_t *discenable; 553 uint16_t *tagenable; 554 u_int update_type; 555 556 cts = &ccb->cts; 557 scsi = &cts->proto_specific.scsi; 558 spi = &cts->xport_specific.spi; 559 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim), 560 cts->ccb_h.target_id, 561 cts->ccb_h.target_lun, 562 SIM_CHANNEL(ahc, sim), 563 ROLE_UNKNOWN); 564 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel, 565 devinfo.our_scsiid, 566 devinfo.target, &tstate); 567 update_type = 0; 568 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) { 569 update_type |= AHC_TRANS_GOAL; 570 discenable = &tstate->discenable; 571 tagenable = &tstate->tagenable; 572 tinfo->current.protocol_version = 573 cts->protocol_version; 574 tinfo->current.transport_version = 575 cts->transport_version; 576 tinfo->goal.protocol_version = 577 cts->protocol_version; 578 tinfo->goal.transport_version = 579 cts->transport_version; 580 } else if (cts->type == CTS_TYPE_USER_SETTINGS) { 581 update_type |= AHC_TRANS_USER; 582 discenable = &ahc->user_discenable; 583 tagenable = &ahc->user_tagenable; 584 tinfo->user.protocol_version = 585 cts->protocol_version; 586 tinfo->user.transport_version = 587 cts->transport_version; 588 } else { 589 ccb->ccb_h.status = CAM_REQ_INVALID; 590 xpt_done(ccb); 591 break; 592 } 593 594 ahc_lock(ahc, &s); 595 596 if ((spi->valid & CTS_SPI_VALID_DISC) != 0) { 597 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0) 598 *discenable |= devinfo.target_mask; 599 else 600 *discenable &= ~devinfo.target_mask; 601 } 602 603 if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) { 604 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) 605 *tagenable |= devinfo.target_mask; 606 else 607 *tagenable &= ~devinfo.target_mask; 608 } 609 610 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) { 611 ahc_validate_width(ahc, &spi->bus_width); 612 ahc_set_width(ahc, &devinfo, spi->bus_width, 613 update_type, /*paused*/FALSE); 614 } 615 616 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) { 617 if (update_type == AHC_TRANS_USER) 618 spi->ppr_options = tinfo->user.ppr_options; 619 else 620 spi->ppr_options = tinfo->goal.ppr_options; 621 } 622 623 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) { 624 if (update_type == AHC_TRANS_USER) 625 spi->sync_offset = tinfo->user.offset; 626 else 627 spi->sync_offset = tinfo->goal.offset; 628 } 629 630 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) { 631 if (update_type == AHC_TRANS_USER) 632 spi->sync_period = tinfo->user.period; 633 else 634 spi->sync_period = tinfo->goal.period; 635 } 636 637 if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0) 638 || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) { 639 struct ahc_syncrate *syncrate; 640 u_int maxsync; 641 642 if ((ahc->features & AHC_ULTRA2) != 0) 643 maxsync = AHC_SYNCRATE_DT; 644 else if ((ahc->features & AHC_ULTRA) != 0) 645 maxsync = AHC_SYNCRATE_ULTRA; 646 else 647 maxsync = AHC_SYNCRATE_FAST; 648 649 syncrate = ahc_find_syncrate(ahc, &spi->sync_period, 650 &spi->ppr_options, 651 maxsync); 652 ahc_validate_offset(ahc, syncrate, &spi->sync_offset, 653 spi->bus_width); 654 655 /* We use a period of 0 to represent async */ 656 if (spi->sync_offset == 0) { 657 spi->sync_period = 0; 658 spi->ppr_options = 0; 659 } 660 661 ahc_set_syncrate(ahc, &devinfo, syncrate, 662 spi->sync_period, spi->sync_offset, 663 spi->ppr_options, update_type, 664 /*paused*/FALSE); 665 } 666 ahc_unlock(ahc, &s); 667 ccb->ccb_h.status = CAM_REQ_CMP; 668 xpt_done(ccb); 669#else 670 struct ahc_devinfo devinfo; 671 struct ccb_trans_settings *cts; 672 struct ahc_initiator_tinfo *tinfo; 673 struct tmode_tstate *tstate; 674 uint16_t *discenable; 675 uint16_t *tagenable; 676 u_int update_type; 677 long s; 678 679 cts = &ccb->cts; 680 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim), 681 cts->ccb_h.target_id, 682 cts->ccb_h.target_lun, 683 SIM_CHANNEL(ahc, sim), 684 ROLE_UNKNOWN); 685 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel, 686 devinfo.our_scsiid, 687 devinfo.target, &tstate); 688 update_type = 0; 689 if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) { 690 update_type |= AHC_TRANS_GOAL; 691 discenable = &tstate->discenable; 692 tagenable = &tstate->tagenable; 693 } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) { 694 update_type |= AHC_TRANS_USER; 695 discenable = &ahc->user_discenable; 696 tagenable = &ahc->user_tagenable; 697 } else { 698 ccb->ccb_h.status = CAM_REQ_INVALID; 699 xpt_done(ccb); 700 break; 701 } 702 703 ahc_lock(ahc, &s); 704 705 if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) { 706 if ((cts->flags & CCB_TRANS_DISC_ENB) != 0) 707 *discenable |= devinfo.target_mask; 708 else 709 *discenable &= ~devinfo.target_mask; 710 } 711 712 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) { 713 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) 714 *tagenable |= devinfo.target_mask; 715 else 716 *tagenable &= ~devinfo.target_mask; 717 } 718 719 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) { 720 ahc_validate_width(ahc, &cts->bus_width); 721 ahc_set_width(ahc, &devinfo, cts->bus_width, 722 update_type, /*paused*/FALSE); 723 } 724 725 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) { 726 if (update_type == AHC_TRANS_USER) 727 cts->sync_offset = tinfo->user.offset; 728 else 729 cts->sync_offset = tinfo->goal.offset; 730 } 731 732 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) { 733 if (update_type == AHC_TRANS_USER) 734 cts->sync_period = tinfo->user.period; 735 else 736 cts->sync_period = tinfo->goal.period; 737 } 738 739 if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0) 740 || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)) { 741 struct ahc_syncrate *syncrate; 742 u_int ppr_options; 743 u_int maxsync; 744 745 if ((ahc->features & AHC_ULTRA2) != 0) 746 maxsync = AHC_SYNCRATE_DT; 747 else if ((ahc->features & AHC_ULTRA) != 0) 748 maxsync = AHC_SYNCRATE_ULTRA; 749 else 750 maxsync = AHC_SYNCRATE_FAST; 751 752 ppr_options = 0; 753 if (cts->sync_period <= 9) 754 ppr_options = MSG_EXT_PPR_DT_REQ; 755 756 syncrate = ahc_find_syncrate(ahc, &cts->sync_period, 757 &ppr_options, 758 maxsync); 759 ahc_validate_offset(ahc, syncrate, &cts->sync_offset, 760 MSG_EXT_WDTR_BUS_8_BIT); 761 762 /* We use a period of 0 to represent async */ 763 if (cts->sync_offset == 0) { 764 cts->sync_period = 0; 765 ppr_options = 0; 766 } 767 768 if (ppr_options == MSG_EXT_PPR_DT_REQ 769 && tinfo->user.transport_version >= 3) { 770 tinfo->goal.transport_version = 771 tinfo->user.transport_version; 772 tinfo->current.transport_version = 773 tinfo->user.transport_version; 774 } 775 776 ahc_set_syncrate(ahc, &devinfo, syncrate, 777 cts->sync_period, cts->sync_offset, 778 ppr_options, update_type, 779 /*paused*/FALSE); 780 } 781 ahc_unlock(ahc, &s); 782 ccb->ccb_h.status = CAM_REQ_CMP; 783 xpt_done(ccb); 784#endif 785 break; 786 } 787 case XPT_GET_TRAN_SETTINGS: 788 /* Get default/user set transfer settings for the target */ 789 { 790 791 ahc_lock(ahc, &s); 792 ahc_get_tran_settings(ahc, SIM_SCSI_ID(ahc, sim), 793 SIM_CHANNEL(ahc, sim), &ccb->cts); 794 ahc_unlock(ahc, &s); 795 xpt_done(ccb); 796 break; 797 } 798 case XPT_CALC_GEOMETRY: 799 { 800 struct ccb_calc_geometry *ccg; 801 uint32_t size_mb; 802 uint32_t secs_per_cylinder; 803 int extended; 804 805 ccg = &ccb->ccg; 806 size_mb = ccg->volume_size 807 / ((1024L * 1024L) / ccg->block_size); 808 extended = SIM_IS_SCSIBUS_B(ahc, sim) 809 ? ahc->flags & AHC_EXTENDED_TRANS_B 810 : ahc->flags & AHC_EXTENDED_TRANS_A; 811 812 if (size_mb > 1024 && extended) { 813 ccg->heads = 255; 814 ccg->secs_per_track = 63; 815 } else { 816 ccg->heads = 64; 817 ccg->secs_per_track = 32; 818 } 819 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 820 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 821 ccb->ccb_h.status = CAM_REQ_CMP; 822 xpt_done(ccb); 823 break; 824 } 825 case XPT_RESET_BUS: /* Reset the specified SCSI bus */ 826 { 827 int found; 828 829 ahc_lock(ahc, &s); 830 found = ahc_reset_channel(ahc, SIM_CHANNEL(ahc, sim), 831 /*initiate reset*/TRUE); 832 ahc_unlock(ahc, &s); 833 if (bootverbose) { 834 xpt_print_path(SIM_PATH(ahc, sim)); 835 printf("SCSI bus reset delivered. " 836 "%d SCBs aborted.\n", found); 837 } 838 ccb->ccb_h.status = CAM_REQ_CMP; 839 xpt_done(ccb); 840 break; 841 } 842 case XPT_TERM_IO: /* Terminate the I/O process */ 843 /* XXX Implement */ 844 ccb->ccb_h.status = CAM_REQ_INVALID; 845 xpt_done(ccb); 846 break; 847 case XPT_PATH_INQ: /* Path routing inquiry */ 848 { 849 struct ccb_pathinq *cpi = &ccb->cpi; 850 851 cpi->version_num = 1; /* XXX??? */ 852 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE; 853 if ((ahc->features & AHC_WIDE) != 0) 854 cpi->hba_inquiry |= PI_WIDE_16; 855 if ((ahc->flags & AHC_TARGETMODE) != 0) { 856 cpi->target_sprt = PIT_PROCESSOR 857 | PIT_DISCONNECT 858 | PIT_TERM_IO; 859 } else { 860 cpi->target_sprt = 0; 861 } 862 cpi->hba_misc = (ahc->flags & AHC_INITIATORMODE) 863 ? 0 : PIM_NOINITIATOR; 864 cpi->hba_eng_cnt = 0; 865 cpi->max_target = (ahc->features & AHC_WIDE) ? 15 : 7; 866 cpi->max_lun = 64; 867 if (SIM_IS_SCSIBUS_B(ahc, sim)) { 868 cpi->initiator_id = ahc->our_id_b; 869 if ((ahc->flags & AHC_RESET_BUS_B) == 0) 870 cpi->hba_misc |= PIM_NOBUSRESET; 871 } else { 872 cpi->initiator_id = ahc->our_id; 873 if ((ahc->flags & AHC_RESET_BUS_A) == 0) 874 cpi->hba_misc |= PIM_NOBUSRESET; 875 } 876 cpi->bus_id = cam_sim_bus(sim); 877 cpi->base_transfer_speed = 3300; 878 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 879 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN); 880 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 881 cpi->unit_number = cam_sim_unit(sim); 882#ifdef AHC_NEW_TRAN_SETTINGS 883 cpi->protocol = PROTO_SCSI; 884 cpi->protocol_version = SCSI_REV_2; 885 cpi->transport = XPORT_SPI; 886 cpi->transport_version = 2; 887 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST; 888 if ((ahc->features & AHC_DT) != 0) { 889 cpi->transport_version = 3; 890 cpi->xport_specific.spi.ppr_options = 891 SID_SPI_CLOCK_DT_ST; 892 } 893#endif 894 cpi->ccb_h.status = CAM_REQ_CMP; 895 xpt_done(ccb); 896 break; 897 } 898 default: 899 ccb->ccb_h.status = CAM_REQ_INVALID; 900 xpt_done(ccb); 901 break; 902 } 903} 904 905static void 906ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel, 907 struct ccb_trans_settings *cts) 908{ 909#ifdef AHC_NEW_TRAN_SETTINGS 910 struct ahc_devinfo devinfo; 911 struct ccb_trans_settings_scsi *scsi; 912 struct ccb_trans_settings_spi *spi; 913 struct ahc_initiator_tinfo *targ_info; 914 struct tmode_tstate *tstate; 915 struct ahc_transinfo *tinfo; 916 917 scsi = &cts->proto_specific.scsi; 918 spi = &cts->xport_specific.spi; 919 ahc_compile_devinfo(&devinfo, our_id, 920 cts->ccb_h.target_id, 921 cts->ccb_h.target_lun, 922 channel, ROLE_UNKNOWN); 923 targ_info = ahc_fetch_transinfo(ahc, devinfo.channel, 924 devinfo.our_scsiid, 925 devinfo.target, &tstate); 926 927 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) 928 tinfo = &targ_info->current; 929 else 930 tinfo = &targ_info->user; 931 932 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 933 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; 934 if (cts->type == CTS_TYPE_USER_SETTINGS) { 935 if ((ahc->user_discenable & devinfo.target_mask) != 0) 936 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 937 938 if ((ahc->user_tagenable & devinfo.target_mask) != 0) 939 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 940 } else { 941 if ((tstate->discenable & devinfo.target_mask) != 0) 942 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 943 944 if ((tstate->tagenable & devinfo.target_mask) != 0) 945 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 946 } 947 cts->protocol_version = tinfo->protocol_version; 948 cts->transport_version = tinfo->transport_version; 949 950 spi->sync_period = tinfo->period; 951 spi->sync_offset = tinfo->offset; 952 spi->bus_width = tinfo->width; 953 spi->ppr_options = tinfo->ppr_options; 954 955 cts->protocol = PROTO_SCSI; 956 cts->transport = XPORT_SPI; 957 scsi->valid = CTS_SCSI_VALID_TQ; 958 spi->valid = CTS_SPI_VALID_SYNC_RATE 959 | CTS_SPI_VALID_SYNC_OFFSET 960 | CTS_SPI_VALID_BUS_WIDTH 961 | CTS_SPI_VALID_DISC 962 | CTS_SPI_VALID_PPR_OPTIONS; 963 964 cts->ccb_h.status = CAM_REQ_CMP; 965#else 966 struct ahc_devinfo devinfo; 967 struct ahc_initiator_tinfo *targ_info; 968 struct tmode_tstate *tstate; 969 struct ahc_transinfo *tinfo; 970 long s; 971 972 ahc_compile_devinfo(&devinfo, our_id, 973 cts->ccb_h.target_id, 974 cts->ccb_h.target_lun, 975 channel, ROLE_UNKNOWN); 976 targ_info = ahc_fetch_transinfo(ahc, devinfo.channel, 977 devinfo.our_scsiid, 978 devinfo.target, &tstate); 979 980 if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) 981 tinfo = &targ_info->current; 982 else 983 tinfo = &targ_info->user; 984 985 ahc_lock(ahc, &s); 986 987 cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB); 988 if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) { 989 if ((ahc->user_discenable & devinfo.target_mask) != 0) 990 cts->flags |= CCB_TRANS_DISC_ENB; 991 992 if ((ahc->user_tagenable & devinfo.target_mask) != 0) 993 cts->flags |= CCB_TRANS_TAG_ENB; 994 } else { 995 if ((tstate->discenable & devinfo.target_mask) != 0) 996 cts->flags |= CCB_TRANS_DISC_ENB; 997 998 if ((tstate->tagenable & devinfo.target_mask) != 0) 999 cts->flags |= CCB_TRANS_TAG_ENB; 1000 } 1001 cts->sync_period = tinfo->period; 1002 cts->sync_offset = tinfo->offset; 1003 cts->bus_width = tinfo->width; 1004 1005 ahc_unlock(ahc, &s); 1006 1007 cts->valid = CCB_TRANS_SYNC_RATE_VALID 1008 | CCB_TRANS_SYNC_OFFSET_VALID 1009 | CCB_TRANS_BUS_WIDTH_VALID 1010 | CCB_TRANS_DISC_VALID 1011 | CCB_TRANS_TQ_VALID; 1012 1013 cts->ccb_h.status = CAM_REQ_CMP; 1014#endif 1015} 1016 1017static void 1018ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 1019{ 1020 struct ahc_softc *ahc; 1021 struct cam_sim *sim; 1022 1023 sim = (struct cam_sim *)callback_arg; 1024 ahc = (struct ahc_softc *)cam_sim_softc(sim); 1025 switch (code) { 1026 case AC_LOST_DEVICE: 1027 { 1028 struct ahc_devinfo devinfo; 1029 long s; 1030 1031 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim), 1032 xpt_path_target_id(path), 1033 xpt_path_lun_id(path), 1034 SIM_CHANNEL(ahc, sim), 1035 ROLE_UNKNOWN); 1036 1037 /* 1038 * Revert to async/narrow transfers 1039 * for the next device. 1040 */ 1041 ahc_lock(ahc, &s); 1042 ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 1043 AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE); 1044 ahc_set_syncrate(ahc, &devinfo, /*syncrate*/NULL, 1045 /*period*/0, /*offset*/0, /*ppr_options*/0, 1046 AHC_TRANS_GOAL|AHC_TRANS_CUR, 1047 /*paused*/FALSE); 1048 ahc_unlock(ahc, &s); 1049 break; 1050 } 1051 default: 1052 break; 1053 } 1054} 1055 1056static void 1057ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments, 1058 int error) 1059{ 1060 struct scb *scb; 1061 union ccb *ccb; 1062 struct ahc_softc *ahc; 1063 long s; 1064 1065 scb = (struct scb *)arg; 1066 ccb = scb->io_ctx; 1067 ahc = (struct ahc_softc *)ccb->ccb_h.ccb_ahc_ptr; 1068 1069 if (error != 0) { 1070 if (error == EFBIG) 1071 ahc_set_transaction_status(scb, CAM_REQ_TOO_BIG); 1072 else 1073 ahc_set_transaction_status(scb, CAM_REQ_CMP_ERR); 1074 if (nsegments != 0) 1075 bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap); 1076 ahc_lock(ahc, &s); 1077 ahc_free_scb(ahc, scb); 1078 ahc_unlock(ahc, &s); 1079 xpt_done(ccb); 1080 return; 1081 } 1082 if (nsegments != 0) { 1083 struct ahc_dma_seg *sg; 1084 bus_dma_segment_t *end_seg; 1085 bus_dmasync_op_t op; 1086 1087 end_seg = dm_segs + nsegments; 1088 1089 /* Copy the segments into our SG list */ 1090 sg = scb->sg_list; 1091 while (dm_segs < end_seg) { 1092 sg->addr = dm_segs->ds_addr; 1093/* XXX Add in the 5th byte of the address later. */ 1094 sg->len = dm_segs->ds_len; 1095 sg++; 1096 dm_segs++; 1097 } 1098 1099 /* 1100 * Note where to find the SG entries in bus space. 1101 * We also set the full residual flag which the 1102 * sequencer will clear as soon as a data transfer 1103 * occurs. 1104 */ 1105 scb->hscb->sgptr = scb->sg_list_phys | SG_FULL_RESID; 1106 1107 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) 1108 op = BUS_DMASYNC_PREREAD; 1109 else 1110 op = BUS_DMASYNC_PREWRITE; 1111 1112 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op); 1113 1114 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) { 1115 struct target_data *tdata; 1116 1117 tdata = &scb->hscb->shared_data.tdata; 1118 tdata->target_phases |= DPHASE_PENDING; 1119 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 1120 tdata->data_phase = P_DATAOUT; 1121 else 1122 tdata->data_phase = P_DATAIN; 1123 1124 /* 1125 * If the transfer is of an odd length and in the 1126 * "in" direction (scsi->HostBus), then it may 1127 * trigger a bug in the 'WideODD' feature of 1128 * non-Ultra2 chips. Force the total data-length 1129 * to be even by adding an extra, 1 byte, SG, 1130 * element. We do this even if we are not currently 1131 * negotiated wide as negotiation could occur before 1132 * this command is executed. 1133 */ 1134 if ((ahc->bugs & AHC_TMODE_WIDEODD_BUG) != 0 1135 && (ccb->csio.dxfer_len & 0x1) != 0 1136 && (ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 1137 1138 nsegments++; 1139 if (nsegments > AHC_NSEG) { 1140 1141 ahc_set_transaction_status(scb, 1142 CAM_REQ_TOO_BIG); 1143 bus_dmamap_unload(ahc->buffer_dmat, 1144 scb->dmamap); 1145 ahc_lock(ahc, &s); 1146 ahc_free_scb(ahc, scb); 1147 ahc_unlock(ahc, &s); 1148 xpt_done(ccb); 1149 return; 1150 } 1151 sg->addr = ahc->dma_bug_buf; 1152 sg->len = 1; 1153 sg++; 1154 } 1155 } 1156 sg--; 1157 sg->len |= AHC_DMA_LAST_SEG; 1158 1159 /* Copy the first SG into the "current" data pointer area */ 1160 scb->hscb->dataptr = scb->sg_list->addr; 1161 scb->hscb->datacnt = scb->sg_list->len; 1162 } else { 1163 scb->hscb->sgptr = SG_LIST_NULL; 1164 scb->hscb->dataptr = 0; 1165 scb->hscb->datacnt = 0; 1166 } 1167 1168 scb->sg_count = nsegments; 1169 1170 ahc_lock(ahc, &s); 1171 1172 /* 1173 * Last time we need to check if this SCB needs to 1174 * be aborted. 1175 */ 1176 if (ahc_get_transaction_status(scb) != CAM_REQ_INPROG) { 1177 if (nsegments != 0) 1178 bus_dmamap_unload(ahc->buffer_dmat, 1179 scb->dmamap); 1180 ahc_free_scb(ahc, scb); 1181 ahc_unlock(ahc, &s); 1182 xpt_done(ccb); 1183 return; 1184 } 1185 1186 LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links); 1187 1188 ccb->ccb_h.status |= CAM_SIM_QUEUED; 1189 1190 if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) { 1191 if (ccb->ccb_h.timeout == CAM_TIME_DEFAULT) 1192 ccb->ccb_h.timeout = 5 * 1000; 1193 ccb->ccb_h.timeout_ch = 1194 timeout(ahc_timeout, (caddr_t)scb, 1195 (ccb->ccb_h.timeout * hz) / 1000); 1196 } 1197 1198 /* 1199 * We only allow one untagged transaction 1200 * per target in the initiator role unless 1201 * we are storing a full busy target *lun* 1202 * table in SCB space. 1203 */ 1204 if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0 1205 && (ahc->features & AHC_SCB_BTT) == 0) { 1206 struct scb_tailq *untagged_q; 1207 1208 untagged_q = &(ahc->untagged_queues[ccb->ccb_h.target_id]); 1209 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe); 1210 if (TAILQ_FIRST(untagged_q) != scb) { 1211 ahc_unlock(ahc, &s); 1212 return; 1213 } 1214 } 1215 scb->flags |= SCB_ACTIVE; 1216 1217 if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) { 1218 pause_sequencer(ahc); 1219 if ((ahc->flags & AHC_PAGESCBS) == 0) 1220 ahc_outb(ahc, SCBPTR, scb->hscb->tag); 1221 ahc_outb(ahc, SCB_TAG, scb->hscb->tag); 1222 ahc_outb(ahc, RETURN_1, CONT_MSG_LOOP); 1223 unpause_sequencer(ahc); 1224 } else { 1225 ahc_queue_scb(ahc, scb); 1226 } 1227 1228 ahc_unlock(ahc, &s); 1229} 1230 1231static void 1232ahc_poll(struct cam_sim *sim) 1233{ 1234 ahc_intr(cam_sim_softc(sim)); 1235} 1236 1237static void 1238ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim, 1239 struct ccb_scsiio *csio, struct scb *scb) 1240{ 1241 struct hardware_scb *hscb; 1242 struct ccb_hdr *ccb_h; 1243 1244 hscb = scb->hscb; 1245 ccb_h = &csio->ccb_h; 1246 1247 if (ccb_h->func_code == XPT_SCSI_IO) { 1248 hscb->cdb_len = csio->cdb_len; 1249 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) { 1250 1251 if (hscb->cdb_len > sizeof(hscb->cdb32) 1252 || (ccb_h->flags & CAM_CDB_PHYS) != 0) { 1253 u_long s; 1254 1255 ahc_set_transaction_status(scb, 1256 CAM_REQ_INVALID); 1257 ahc_lock(ahc, &s); 1258 ahc_free_scb(ahc, scb); 1259 ahc_unlock(ahc, &s); 1260 xpt_done((union ccb *)csio); 1261 return; 1262 } 1263 if (hscb->cdb_len > 12) { 1264 memcpy(hscb->cdb32, 1265 csio->cdb_io.cdb_ptr, 1266 hscb->cdb_len); 1267 hscb->shared_data.cdb_ptr = scb->cdb32_busaddr; 1268 } else { 1269 memcpy(hscb->shared_data.cdb, 1270 csio->cdb_io.cdb_ptr, 1271 hscb->cdb_len); 1272 } 1273 } else { 1274 if (hscb->cdb_len > 12) { 1275 memcpy(hscb->cdb32, csio->cdb_io.cdb_bytes, 1276 hscb->cdb_len); 1277 hscb->shared_data.cdb_ptr = scb->cdb32_busaddr; 1278 } else { 1279 memcpy(hscb->shared_data.cdb, 1280 csio->cdb_io.cdb_bytes, 1281 hscb->cdb_len); 1282 } 1283 } 1284 } 1285 1286 /* Only use S/G if there is a transfer */ 1287 if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 1288 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) { 1289 /* We've been given a pointer to a single buffer */ 1290 if ((ccb_h->flags & CAM_DATA_PHYS) == 0) { 1291 int s; 1292 int error; 1293 1294 s = splsoftvm(); 1295 error = bus_dmamap_load(ahc->buffer_dmat, 1296 scb->dmamap, 1297 csio->data_ptr, 1298 csio->dxfer_len, 1299 ahc_execute_scb, 1300 scb, /*flags*/0); 1301 if (error == EINPROGRESS) { 1302 /* 1303 * So as to maintain ordering, 1304 * freeze the controller queue 1305 * until our mapping is 1306 * returned. 1307 */ 1308 xpt_freeze_simq(sim, 1309 /*count*/1); 1310 scb->io_ctx->ccb_h.status |= 1311 CAM_RELEASE_SIMQ; 1312 } 1313 splx(s); 1314 } else { 1315 struct bus_dma_segment seg; 1316 1317 /* Pointer to physical buffer */ 1318 if (csio->dxfer_len > AHC_MAXTRANSFER_SIZE) 1319 panic("ahc_setup_data - Transfer size " 1320 "larger than can device max"); 1321 1322 seg.ds_addr = (bus_addr_t)csio->data_ptr; 1323 seg.ds_len = csio->dxfer_len; 1324 ahc_execute_scb(scb, &seg, 1, 0); 1325 } 1326 } else { 1327 struct bus_dma_segment *segs; 1328 1329 if ((ccb_h->flags & CAM_DATA_PHYS) != 0) 1330 panic("ahc_setup_data - Physical segment " 1331 "pointers unsupported"); 1332 1333 if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0) 1334 panic("ahc_setup_data - Virtual segment " 1335 "addresses unsupported"); 1336 1337 /* Just use the segments provided */ 1338 segs = (struct bus_dma_segment *)csio->data_ptr; 1339 ahc_execute_scb(scb, segs, csio->sglist_cnt, 0); 1340 } 1341 } else { 1342 ahc_execute_scb(scb, NULL, 0, 0); 1343 } 1344} 1345 1346static void 1347ahc_set_recoveryscb(struct ahc_softc *ahc, struct scb *scb) { 1348 1349 if ((scb->flags & SCB_RECOVERY_SCB) == 0) { 1350 struct scb *list_scb; 1351 1352 scb->flags |= SCB_RECOVERY_SCB; 1353 1354 /* 1355 * Take all queued, but not sent SCBs out of the equation. 1356 * Also ensure that no new CCBs are queued to us while we 1357 * try to fix this problem. 1358 */ 1359 if ((scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { 1360 xpt_freeze_simq(SCB_GET_SIM(ahc, scb), /*count*/1); 1361 scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ; 1362 } 1363 1364 /* 1365 * Go through all of our pending SCBs and remove 1366 * any scheduled timeouts for them. We will reschedule 1367 * them after we've successfully fixed this problem. 1368 */ 1369 LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) { 1370 union ccb *ccb; 1371 1372 ccb = list_scb->io_ctx; 1373 untimeout(ahc_timeout, list_scb, ccb->ccb_h.timeout_ch); 1374 } 1375 } 1376} 1377 1378void 1379ahc_timeout(void *arg) 1380{ 1381 struct scb *scb; 1382 struct ahc_softc *ahc; 1383 long s; 1384 int found; 1385 u_int last_phase; 1386 int target; 1387 int lun; 1388 int i; 1389 char channel; 1390 1391 scb = (struct scb *)arg; 1392 ahc = (struct ahc_softc *)scb->io_ctx->ccb_h.ccb_ahc_ptr; 1393 1394 ahc_lock(ahc, &s); 1395 1396 /* 1397 * Ensure that the card doesn't do anything 1398 * behind our back. Also make sure that we 1399 * didn't "just" miss an interrupt that would 1400 * affect this timeout. 1401 */ 1402 do { 1403 ahc_intr(ahc); 1404 pause_sequencer(ahc); 1405 } while (ahc_inb(ahc, INTSTAT) & INT_PEND); 1406 1407 ahc_print_path(ahc, scb); 1408 if ((scb->flags & SCB_ACTIVE) == 0) { 1409 /* Previous timeout took care of me already */ 1410 printf("Timedout SCB %d handled by another timeout\n", 1411 scb->hscb->tag); 1412 unpause_sequencer(ahc); 1413 ahc_unlock(ahc, &s); 1414 return; 1415 } 1416 1417 target = SCB_GET_TARGET(ahc, scb); 1418 channel = SCB_GET_CHANNEL(ahc, scb); 1419 lun = SCB_GET_LUN(scb); 1420 1421 printf("SCB 0x%x - timed out ", scb->hscb->tag); 1422 /* 1423 * Take a snapshot of the bus state and print out 1424 * some information so we can track down driver bugs. 1425 */ 1426 last_phase = ahc_inb(ahc, LASTPHASE); 1427 1428 for (i = 0; i < num_phases; i++) { 1429 if (last_phase == phase_table[i].phase) 1430 break; 1431 } 1432 printf("%s", phase_table[i].phasemsg); 1433 1434 printf(", SEQADDR == 0x%x\n", 1435 ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8)); 1436 1437 if (scb->sg_count > 0) { 1438 for (i = 0; i < scb->sg_count; i++) { 1439 printf("sg[%d] - Addr 0x%x : Length %d\n", 1440 i, 1441 scb->sg_list[i].addr, 1442 scb->sg_list[i].len); 1443 } 1444 } 1445 if (scb->flags & (SCB_DEVICE_RESET|SCB_ABORT)) { 1446 /* 1447 * Been down this road before. 1448 * Do a full bus reset. 1449 */ 1450bus_reset: 1451 ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); 1452 found = ahc_reset_channel(ahc, channel, /*Initiate Reset*/TRUE); 1453 printf("%s: Issued Channel %c Bus Reset. " 1454 "%d SCBs aborted\n", ahc_name(ahc), channel, found); 1455 } else { 1456 /* 1457 * If we are a target, transition to bus free and report 1458 * the timeout. 1459 * 1460 * The target/initiator that is holding up the bus may not 1461 * be the same as the one that triggered this timeout 1462 * (different commands have different timeout lengths). 1463 * If the bus is idle and we are actiing as the initiator 1464 * for this request, queue a BDR message to the timed out 1465 * target. Otherwise, if the timed out transaction is 1466 * active: 1467 * Initiator transaction: 1468 * Stuff the message buffer with a BDR message and assert 1469 * ATN in the hopes that the target will let go of the bus 1470 * and go to the mesgout phase. If this fails, we'll 1471 * get another timeout 2 seconds later which will attempt 1472 * a bus reset. 1473 * 1474 * Target transaction: 1475 * Transition to BUS FREE and report the error. 1476 * It's good to be the target! 1477 */ 1478 u_int active_scb_index; 1479 1480 active_scb_index = ahc_inb(ahc, SCB_TAG); 1481 1482 if (last_phase != P_BUSFREE 1483 && (active_scb_index < ahc->scb_data->numscbs)) { 1484 struct scb *active_scb; 1485 1486 /* 1487 * If the active SCB is not from our device, 1488 * assume that another device is hogging the bus 1489 * and wait for it's timeout to expire before 1490 * taking additional action. 1491 */ 1492 active_scb = &ahc->scb_data->scbarray[active_scb_index]; 1493 if (active_scb->hscb->scsiid != scb->hscb->scsiid 1494 || active_scb->hscb->lun != scb->hscb->lun) { 1495 struct ccb_hdr *ccbh; 1496 u_int newtimeout; 1497 1498 ahc_print_path(ahc, scb); 1499 printf("Other SCB Timeout%s", 1500 (scb->flags & SCB_OTHERTCL_TIMEOUT) != 0 1501 ? " again\n" : "\n"); 1502 scb->flags |= SCB_OTHERTCL_TIMEOUT; 1503 newtimeout = 1504 MAX(active_scb->io_ctx->ccb_h.timeout, 1505 scb->io_ctx->ccb_h.timeout); 1506 ccbh = &scb->io_ctx->ccb_h; 1507 scb->io_ctx->ccb_h.timeout_ch = 1508 timeout(ahc_timeout, scb, 1509 (newtimeout * hz) / 1000); 1510 ahc_unlock(ahc, &s); 1511 return; 1512 } 1513 1514 /* It's us */ 1515 if ((scb->hscb->control & TARGET_SCB) != 0) { 1516 1517 /* 1518 * Send back any queued up transactions 1519 * and properly record the error condition. 1520 */ 1521 ahc_freeze_devq(ahc, scb); 1522 ahc_set_transaction_status(scb, 1523 CAM_CMD_TIMEOUT); 1524 ahc_freeze_scb(scb); 1525 ahc_done(ahc, scb); 1526 1527 /* Will clear us from the bus */ 1528 restart_sequencer(ahc); 1529 return; 1530 } 1531 1532 ahc_set_recoveryscb(ahc, active_scb); 1533 ahc_outb(ahc, MSG_OUT, MSG_BUS_DEV_RESET); 1534 ahc_outb(ahc, SCSISIGO, last_phase|ATNO); 1535 ahc_print_path(ahc, active_scb); 1536 printf("BDR message in message buffer\n"); 1537 active_scb->flags |= SCB_DEVICE_RESET; 1538 active_scb->io_ctx->ccb_h.timeout_ch = 1539 timeout(ahc_timeout, (caddr_t)active_scb, 2 * hz); 1540 unpause_sequencer(ahc); 1541 } else { 1542 int disconnected; 1543 1544 /* XXX Shouldn't panic. Just punt instead */ 1545 if ((scb->hscb->control & TARGET_SCB) != 0) 1546 panic("Timed-out target SCB but bus idle"); 1547 1548 if (last_phase != P_BUSFREE 1549 && (ahc_inb(ahc, SSTAT0) & TARGET) != 0) { 1550 /* XXX What happened to the SCB? */ 1551 /* Hung target selection. Goto busfree */ 1552 printf("%s: Hung target selection\n", 1553 ahc_name(ahc)); 1554 restart_sequencer(ahc); 1555 return; 1556 } 1557 1558 if (ahc_search_qinfifo(ahc, target, channel, lun, 1559 scb->hscb->tag, ROLE_INITIATOR, 1560 /*status*/0, SEARCH_COUNT) > 0) { 1561 disconnected = FALSE; 1562 } else { 1563 disconnected = TRUE; 1564 } 1565 1566 if (disconnected) { 1567 u_int active_scb; 1568 1569 ahc_set_recoveryscb(ahc, scb); 1570 /* 1571 * Simply set the MK_MESSAGE control bit. 1572 */ 1573 scb->hscb->control |= MK_MESSAGE; 1574 scb->flags |= SCB_QUEUED_MSG 1575 | SCB_DEVICE_RESET; 1576 1577 /* 1578 * Mark the cached copy of this SCB in the 1579 * disconnected list too, so that a reconnect 1580 * at this point causes a BDR or abort. 1581 */ 1582 active_scb = ahc_inb(ahc, SCBPTR); 1583 if (ahc_search_disc_list(ahc, target, 1584 channel, lun, 1585 scb->hscb->tag, 1586 /*stop_on_first*/TRUE, 1587 /*remove*/FALSE, 1588 /*save_state*/FALSE)) { 1589 u_int scb_control; 1590 1591 scb_control = ahc_inb(ahc, SCB_CONTROL); 1592 scb_control |= MK_MESSAGE; 1593 ahc_outb(ahc, SCB_CONTROL, scb_control); 1594 } 1595 ahc_outb(ahc, SCBPTR, active_scb); 1596 1597 /* 1598 * Actually re-queue this SCB in case we can 1599 * select the device before it reconnects. 1600 * Clear out any entries in the QINFIFO first 1601 * so we are the next SCB for this target 1602 * to run. 1603 */ 1604 ahc_search_qinfifo(ahc, 1605 SCB_GET_TARGET(ahc, scb), 1606 channel, SCB_GET_LUN(scb), 1607 SCB_LIST_NULL, 1608 ROLE_INITIATOR, 1609 CAM_REQUEUE_REQ, 1610 SEARCH_COMPLETE); 1611 ahc_print_path(ahc, scb); 1612 printf("Queuing a BDR SCB\n"); 1613 ahc->qinfifo[ahc->qinfifonext++] = 1614 scb->hscb->tag; 1615 if ((ahc->features & AHC_QUEUE_REGS) != 0) { 1616 ahc_outb(ahc, HNSCB_QOFF, 1617 ahc->qinfifonext); 1618 } else { 1619 ahc_outb(ahc, KERNEL_QINPOS, 1620 ahc->qinfifonext); 1621 } 1622 scb->io_ctx->ccb_h.timeout_ch = 1623 timeout(ahc_timeout, (caddr_t)scb, 2 * hz); 1624 unpause_sequencer(ahc); 1625 } else { 1626 /* Go "immediatly" to the bus reset */ 1627 /* This shouldn't happen */ 1628 ahc_set_recoveryscb(ahc, scb); 1629 ahc_print_path(ahc, scb); 1630 printf("SCB %d: Immediate reset. " 1631 "Flags = 0x%x\n", scb->hscb->tag, 1632 scb->flags); 1633 goto bus_reset; 1634 } 1635 } 1636 } 1637 ahc_unlock(ahc, &s); 1638} 1639 1640static void 1641ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb) 1642{ 1643 union ccb *abort_ccb; 1644 1645 abort_ccb = ccb->cab.abort_ccb; 1646 switch (abort_ccb->ccb_h.func_code) { 1647 case XPT_ACCEPT_TARGET_IO: 1648 case XPT_IMMED_NOTIFY: 1649 case XPT_CONT_TARGET_IO: 1650 { 1651 struct tmode_tstate *tstate; 1652 struct tmode_lstate *lstate; 1653 struct ccb_hdr_slist *list; 1654 cam_status status; 1655 1656 status = ahc_find_tmode_devs(ahc, sim, abort_ccb, &tstate, 1657 &lstate, TRUE); 1658 1659 if (status != CAM_REQ_CMP) { 1660 ccb->ccb_h.status = status; 1661 break; 1662 } 1663 1664 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) 1665 list = &lstate->accept_tios; 1666 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY) 1667 list = &lstate->immed_notifies; 1668 else 1669 list = NULL; 1670 1671 if (list != NULL) { 1672 struct ccb_hdr *curelm; 1673 int found; 1674 1675 curelm = SLIST_FIRST(list); 1676 found = 0; 1677 if (curelm == &abort_ccb->ccb_h) { 1678 found = 1; 1679 SLIST_REMOVE_HEAD(list, sim_links.sle); 1680 } else { 1681 while(curelm != NULL) { 1682 struct ccb_hdr *nextelm; 1683 1684 nextelm = 1685 SLIST_NEXT(curelm, sim_links.sle); 1686 1687 if (nextelm == &abort_ccb->ccb_h) { 1688 found = 1; 1689 SLIST_NEXT(curelm, 1690 sim_links.sle) = 1691 SLIST_NEXT(nextelm, 1692 sim_links.sle); 1693 break; 1694 } 1695 curelm = nextelm; 1696 } 1697 } 1698 1699 if (found) { 1700 abort_ccb->ccb_h.status = CAM_REQ_ABORTED; 1701 xpt_done(abort_ccb); 1702 ccb->ccb_h.status = CAM_REQ_CMP; 1703 } else { 1704 printf("Not found\n"); 1705 ccb->ccb_h.status = CAM_PATH_INVALID; 1706 } 1707 break; 1708 } 1709 /* FALLTHROUGH */ 1710 } 1711 case XPT_SCSI_IO: 1712 /* XXX Fully implement the hard ones */ 1713 ccb->ccb_h.status = CAM_UA_ABORT; 1714 break; 1715 default: 1716 ccb->ccb_h.status = CAM_REQ_INVALID; 1717 break; 1718 } 1719 xpt_done(ccb); 1720} 1721 1722void 1723ahc_send_async(struct ahc_softc *ahc, char channel, u_int target, 1724 u_int lun, ac_code code) 1725{ 1726 struct ccb_trans_settings cts; 1727 struct cam_path *path; 1728 void *arg; 1729 int error; 1730 1731 arg = NULL; 1732 error = ahc_create_path(ahc, channel, target, lun, &path); 1733 1734 if (error != CAM_REQ_CMP) 1735 return; 1736 1737 switch (code) { 1738 case AC_TRANSFER_NEG: 1739#ifdef AHC_NEW_TRAN_SETTINGS 1740 cts.type = CTS_TYPE_CURRENT_SETTINGS; 1741#else 1742 cts.flags = CCB_TRANS_CURRENT_SETTINGS; 1743#endif 1744 cts.ccb_h.path = path; 1745 cts.ccb_h.target_id = target; 1746 cts.ccb_h.target_lun = lun; 1747 ahc_get_tran_settings(ahc, channel == 'A' ? ahc->our_id 1748 : ahc->our_id_b, 1749 channel, &cts); 1750 arg = &cts; 1751 break; 1752 case AC_SENT_BDR: 1753 case AC_BUS_RESET: 1754 break; 1755 default: 1756 panic("ahc_send_async: Unexpected async event"); 1757 } 1758 xpt_async(code, path, arg); 1759} 1760 1761void 1762ahc_platform_set_tags(struct ahc_softc *ahc, 1763 struct ahc_devinfo *devinfo, int enable) 1764{ 1765} 1766 1767int 1768ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg) 1769{ 1770 ahc->platform_data = 1771 malloc(sizeof(struct ahc_platform_data), M_DEVBUF, M_NOWAIT); 1772 if (ahc->platform_data == NULL) 1773 return (ENOMEM); 1774 memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data)); 1775 return (0); 1776} 1777 1778void 1779ahc_platform_free(struct ahc_softc *ahc) 1780{ 1781 if (ahc->platform_data != NULL) { 1782 if (ahc->platform_data->regs != NULL) 1783 bus_release_resource(ahc->dev_softc, 1784 ahc->platform_data->regs_res_type, 1785 ahc->platform_data->regs_res_id, 1786 ahc->platform_data->regs); 1787 1788 if (ahc->platform_data->irq != NULL) 1789 bus_release_resource(ahc->dev_softc, 1790 ahc->platform_data->irq_res_type, 1791 0, ahc->platform_data->irq); 1792 1793 free(ahc->platform_data, M_DEVBUF); 1794 } 1795} 1796 1797int 1798ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc) 1799{ 1800 /* We don't sort softcs under FreeBSD so report equal always */ 1801 return (0); 1802} 1803 1804#if UNUSED 1805static void 1806ahc_dump_targcmd(struct target_cmd *cmd) 1807{ 1808 uint8_t *byte; 1809 uint8_t *last_byte; 1810 int i; 1811 1812 byte = &cmd->initiator_channel; 1813 /* Debugging info for received commands */ 1814 last_byte = &cmd[1].initiator_channel; 1815 1816 i = 0; 1817 while (byte < last_byte) { 1818 if (i == 0) 1819 printf("\t"); 1820 printf("%#x", *byte++); 1821 i++; 1822 if (i == 8) { 1823 printf("\n"); 1824 i = 0; 1825 } else { 1826 printf(", "); 1827 } 1828 } 1829} 1830#endif 1831