1/*- 2 * Core routines and tables shareable across OS platforms. 3 * 4 * Copyright (c) 1994-2002, 2004 Justin T. Gibbs. 5 * Copyright (c) 2000-2003 Adaptec Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification. 14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 15 * substantially similar to the "NO WARRANTY" disclaimer below 16 * ("Disclaimer") and any redistribution must be conditioned upon 17 * including a substantially similar Disclaimer requirement for further 18 * binary redistribution. 19 * 3. Neither the names of the above-listed copyright holders nor the names 20 * of any contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * Alternatively, this software may be distributed under the terms of the 24 * GNU General Public License ("GPL") version 2 as published by the Free 25 * Software Foundation. 26 * 27 * NO WARRANTY 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 37 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGES. 39 * 40 * $Id: //depot/aic7xxx/aic7xxx/aic79xx.c#246 $ 41 */ 42 43#ifdef __linux__ 44#include "aic79xx_osm.h" 45#include "aic79xx_inline.h" 46#include "aicasm/aicasm_insformat.h" 47#else 48#include <sys/cdefs.h> 49__FBSDID("$FreeBSD$"); 50#include <dev/aic7xxx/aic79xx_osm.h> 51#include <dev/aic7xxx/aic79xx_inline.h> 52#include <dev/aic7xxx/aicasm/aicasm_insformat.h> 53#endif 54 55/******************************** Globals *************************************/ 56struct ahd_softc_tailq ahd_tailq = TAILQ_HEAD_INITIALIZER(ahd_tailq); 57uint32_t ahd_attach_to_HostRAID_controllers = 1; 58 59/***************************** Lookup Tables **********************************/ 60char *ahd_chip_names[] = 61{ 62 "NONE", 63 "aic7901", 64 "aic7902", 65 "aic7901A" 66}; 67static const u_int num_chip_names = NUM_ELEMENTS(ahd_chip_names); 68 69/* 70 * Hardware error codes. 71 */ 72struct ahd_hard_error_entry { 73 uint8_t errno; 74 char *errmesg; 75}; 76 77static struct ahd_hard_error_entry ahd_hard_errors[] = { 78 { DSCTMOUT, "Discard Timer has timed out" }, 79 { ILLOPCODE, "Illegal Opcode in sequencer program" }, 80 { SQPARERR, "Sequencer Parity Error" }, 81 { DPARERR, "Data-path Parity Error" }, 82 { MPARERR, "Scratch or SCB Memory Parity Error" }, 83 { CIOPARERR, "CIOBUS Parity Error" }, 84}; 85static const u_int num_errors = NUM_ELEMENTS(ahd_hard_errors); 86 87static struct ahd_phase_table_entry ahd_phase_table[] = 88{ 89 { P_DATAOUT, MSG_NOOP, "in Data-out phase" }, 90 { P_DATAIN, MSG_INITIATOR_DET_ERR, "in Data-in phase" }, 91 { P_DATAOUT_DT, MSG_NOOP, "in DT Data-out phase" }, 92 { P_DATAIN_DT, MSG_INITIATOR_DET_ERR, "in DT Data-in phase" }, 93 { P_COMMAND, MSG_NOOP, "in Command phase" }, 94 { P_MESGOUT, MSG_NOOP, "in Message-out phase" }, 95 { P_STATUS, MSG_INITIATOR_DET_ERR, "in Status phase" }, 96 { P_MESGIN, MSG_PARITY_ERROR, "in Message-in phase" }, 97 { P_BUSFREE, MSG_NOOP, "while idle" }, 98 { 0, MSG_NOOP, "in unknown phase" } 99}; 100 101/* 102 * In most cases we only wish to itterate over real phases, so 103 * exclude the last element from the count. 104 */ 105static const u_int num_phases = NUM_ELEMENTS(ahd_phase_table) - 1; 106 107/* Our Sequencer Program */ 108#include "aic79xx_seq.h" 109 110/**************************** Function Declarations ***************************/ 111static void ahd_handle_transmission_error(struct ahd_softc *ahd); 112static void ahd_handle_lqiphase_error(struct ahd_softc *ahd, 113 u_int lqistat1); 114static int ahd_handle_pkt_busfree(struct ahd_softc *ahd, 115 u_int busfreetime); 116static int ahd_handle_nonpkt_busfree(struct ahd_softc *ahd); 117static void ahd_handle_proto_violation(struct ahd_softc *ahd); 118static void ahd_force_renegotiation(struct ahd_softc *ahd, 119 struct ahd_devinfo *devinfo); 120 121static struct ahd_tmode_tstate* 122 ahd_alloc_tstate(struct ahd_softc *ahd, 123 u_int scsi_id, char channel); 124#ifdef AHD_TARGET_MODE 125static void ahd_free_tstate(struct ahd_softc *ahd, 126 u_int scsi_id, char channel, int force); 127#endif 128static void ahd_devlimited_syncrate(struct ahd_softc *ahd, 129 struct ahd_initiator_tinfo *, 130 u_int *period, 131 u_int *ppr_options, 132 role_t role); 133static void ahd_update_neg_table(struct ahd_softc *ahd, 134 struct ahd_devinfo *devinfo, 135 struct ahd_transinfo *tinfo); 136static void ahd_update_pending_scbs(struct ahd_softc *ahd); 137static void ahd_fetch_devinfo(struct ahd_softc *ahd, 138 struct ahd_devinfo *devinfo); 139static void ahd_scb_devinfo(struct ahd_softc *ahd, 140 struct ahd_devinfo *devinfo, 141 struct scb *scb); 142static void ahd_setup_initiator_msgout(struct ahd_softc *ahd, 143 struct ahd_devinfo *devinfo, 144 struct scb *scb); 145static void ahd_build_transfer_msg(struct ahd_softc *ahd, 146 struct ahd_devinfo *devinfo); 147static void ahd_construct_sdtr(struct ahd_softc *ahd, 148 struct ahd_devinfo *devinfo, 149 u_int period, u_int offset); 150static void ahd_construct_wdtr(struct ahd_softc *ahd, 151 struct ahd_devinfo *devinfo, 152 u_int bus_width); 153static void ahd_construct_ppr(struct ahd_softc *ahd, 154 struct ahd_devinfo *devinfo, 155 u_int period, u_int offset, 156 u_int bus_width, u_int ppr_options); 157static void ahd_clear_msg_state(struct ahd_softc *ahd); 158static void ahd_handle_message_phase(struct ahd_softc *ahd); 159typedef enum { 160 AHDMSG_1B, 161 AHDMSG_2B, 162 AHDMSG_EXT 163} ahd_msgtype; 164static int ahd_sent_msg(struct ahd_softc *ahd, ahd_msgtype type, 165 u_int msgval, int full); 166static int ahd_parse_msg(struct ahd_softc *ahd, 167 struct ahd_devinfo *devinfo); 168static int ahd_handle_msg_reject(struct ahd_softc *ahd, 169 struct ahd_devinfo *devinfo); 170static void ahd_handle_ign_wide_residue(struct ahd_softc *ahd, 171 struct ahd_devinfo *devinfo); 172static void ahd_reinitialize_dataptrs(struct ahd_softc *ahd); 173static void ahd_handle_devreset(struct ahd_softc *ahd, 174 struct ahd_devinfo *devinfo, 175 u_int lun, cam_status status, 176 char *message, int verbose_level); 177#ifdef AHD_TARGET_MODE 178static void ahd_setup_target_msgin(struct ahd_softc *ahd, 179 struct ahd_devinfo *devinfo, 180 struct scb *scb); 181#endif 182 183static u_int ahd_sglist_size(struct ahd_softc *ahd); 184static u_int ahd_sglist_allocsize(struct ahd_softc *ahd); 185static bus_dmamap_callback_t 186 ahd_dmamap_cb; 187static void ahd_initialize_hscbs(struct ahd_softc *ahd); 188static int ahd_init_scbdata(struct ahd_softc *ahd); 189static void ahd_fini_scbdata(struct ahd_softc *ahd); 190static void ahd_setup_iocell_workaround(struct ahd_softc *ahd); 191static void ahd_iocell_first_selection(struct ahd_softc *ahd); 192static void ahd_add_col_list(struct ahd_softc *ahd, 193 struct scb *scb, u_int col_idx); 194static void ahd_rem_col_list(struct ahd_softc *ahd, 195 struct scb *scb); 196static void ahd_chip_init(struct ahd_softc *ahd); 197static void ahd_qinfifo_requeue(struct ahd_softc *ahd, 198 struct scb *prev_scb, 199 struct scb *scb); 200static int ahd_qinfifo_count(struct ahd_softc *ahd); 201static int ahd_search_scb_list(struct ahd_softc *ahd, int target, 202 char channel, int lun, u_int tag, 203 role_t role, uint32_t status, 204 ahd_search_action action, 205 u_int *list_head, u_int *list_tail, 206 u_int tid); 207static void ahd_stitch_tid_list(struct ahd_softc *ahd, 208 u_int tid_prev, u_int tid_cur, 209 u_int tid_next); 210static void ahd_add_scb_to_free_list(struct ahd_softc *ahd, 211 u_int scbid); 212static u_int ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid, 213 u_int prev, u_int next, u_int tid); 214static void ahd_reset_current_bus(struct ahd_softc *ahd); 215static ahd_callback_t ahd_reset_poll; 216static ahd_callback_t ahd_stat_timer; 217#ifdef AHD_DUMP_SEQ 218static void ahd_dumpseq(struct ahd_softc *ahd); 219#endif 220static void ahd_loadseq(struct ahd_softc *ahd); 221static int ahd_check_patch(struct ahd_softc *ahd, 222 struct patch **start_patch, 223 u_int start_instr, u_int *skip_addr); 224static u_int ahd_resolve_seqaddr(struct ahd_softc *ahd, 225 u_int address); 226static void ahd_download_instr(struct ahd_softc *ahd, 227 u_int instrptr, uint8_t *dconsts); 228static int ahd_probe_stack_size(struct ahd_softc *ahd); 229static int ahd_other_scb_timeout(struct ahd_softc *ahd, 230 struct scb *scb, 231 struct scb *other_scb); 232static int ahd_scb_active_in_fifo(struct ahd_softc *ahd, 233 struct scb *scb); 234static void ahd_run_data_fifo(struct ahd_softc *ahd, 235 struct scb *scb); 236 237#ifdef AHD_TARGET_MODE 238static void ahd_queue_lstate_event(struct ahd_softc *ahd, 239 struct ahd_tmode_lstate *lstate, 240 u_int initiator_id, 241 u_int event_type, 242 u_int event_arg); 243static void ahd_update_scsiid(struct ahd_softc *ahd, 244 u_int targid_mask); 245static int ahd_handle_target_cmd(struct ahd_softc *ahd, 246 struct target_cmd *cmd); 247#endif 248 249/******************************** Private Inlines *****************************/ 250static __inline void ahd_assert_atn(struct ahd_softc *ahd); 251static __inline int ahd_currently_packetized(struct ahd_softc *ahd); 252static __inline int ahd_set_active_fifo(struct ahd_softc *ahd); 253 254static __inline void 255ahd_assert_atn(struct ahd_softc *ahd) 256{ 257 ahd_outb(ahd, SCSISIGO, ATNO); 258} 259 260/* 261 * Determine if the current connection has a packetized 262 * agreement. This does not necessarily mean that we 263 * are currently in a packetized transfer. We could 264 * just as easily be sending or receiving a message. 265 */ 266static __inline int 267ahd_currently_packetized(struct ahd_softc *ahd) 268{ 269 ahd_mode_state saved_modes; 270 int packetized; 271 272 saved_modes = ahd_save_modes(ahd); 273 if ((ahd->bugs & AHD_PKTIZED_STATUS_BUG) != 0) { 274 /* 275 * The packetized bit refers to the last 276 * connection, not the current one. Check 277 * for non-zero LQISTATE instead. 278 */ 279 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 280 packetized = ahd_inb(ahd, LQISTATE) != 0; 281 } else { 282 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 283 packetized = ahd_inb(ahd, LQISTAT2) & PACKETIZED; 284 } 285 ahd_restore_modes(ahd, saved_modes); 286 return (packetized); 287} 288 289static __inline int 290ahd_set_active_fifo(struct ahd_softc *ahd) 291{ 292 u_int active_fifo; 293 294 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 295 active_fifo = ahd_inb(ahd, DFFSTAT) & CURRFIFO; 296 switch (active_fifo) { 297 case 0: 298 case 1: 299 ahd_set_modes(ahd, active_fifo, active_fifo); 300 return (1); 301 default: 302 return (0); 303 } 304} 305 306/************************* Sequencer Execution Control ************************/ 307/* 308 * Restart the sequencer program from address zero 309 */ 310void 311ahd_restart(struct ahd_softc *ahd) 312{ 313 314 ahd_pause(ahd); 315 316 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 317 318 /* No more pending messages */ 319 ahd_clear_msg_state(ahd); 320 ahd_outb(ahd, SCSISIGO, 0); /* De-assert BSY */ 321 ahd_outb(ahd, MSG_OUT, MSG_NOOP); /* No message to send */ 322 ahd_outb(ahd, SXFRCTL1, ahd_inb(ahd, SXFRCTL1) & ~BITBUCKET); 323 ahd_outb(ahd, SEQINTCTL, 0); 324 ahd_outb(ahd, LASTPHASE, P_BUSFREE); 325 ahd_outb(ahd, SEQ_FLAGS, 0); 326 ahd_outb(ahd, SAVED_SCSIID, 0xFF); 327 ahd_outb(ahd, SAVED_LUN, 0xFF); 328 329 /* 330 * Ensure that the sequencer's idea of TQINPOS 331 * matches our own. The sequencer increments TQINPOS 332 * only after it sees a DMA complete and a reset could 333 * occur before the increment leaving the kernel to believe 334 * the command arrived but the sequencer to not. 335 */ 336 ahd_outb(ahd, TQINPOS, ahd->tqinfifonext); 337 338 /* Always allow reselection */ 339 ahd_outb(ahd, SCSISEQ1, 340 ahd_inb(ahd, SCSISEQ_TEMPLATE) & (ENSELI|ENRSELI|ENAUTOATNP)); 341 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 342 343 /* 344 * Clear any pending sequencer interrupt. It is no 345 * longer relevant since we're resetting the Program 346 * Counter. 347 */ 348 ahd_outb(ahd, CLRINT, CLRSEQINT); 349 350 ahd_outb(ahd, SEQCTL0, FASTMODE|SEQRESET); 351 ahd_unpause(ahd); 352} 353 354void 355ahd_clear_fifo(struct ahd_softc *ahd, u_int fifo) 356{ 357 ahd_mode_state saved_modes; 358 359#ifdef AHD_DEBUG 360 if ((ahd_debug & AHD_SHOW_FIFOS) != 0) 361 printf("%s: Clearing FIFO %d\n", ahd_name(ahd), fifo); 362#endif 363 saved_modes = ahd_save_modes(ahd); 364 ahd_set_modes(ahd, fifo, fifo); 365 ahd_outb(ahd, DFFSXFRCTL, RSTCHN|CLRSHCNT); 366 if ((ahd_inb(ahd, SG_STATE) & FETCH_INPROG) != 0) 367 ahd_outb(ahd, CCSGCTL, CCSGRESET); 368 ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR); 369 ahd_outb(ahd, SG_STATE, 0); 370 ahd_restore_modes(ahd, saved_modes); 371} 372 373/************************* Input/Output Queues ********************************/ 374/* 375 * Flush and completed commands that are sitting in the command 376 * complete queues down on the chip but have yet to be dma'ed back up. 377 */ 378void 379ahd_flush_qoutfifo(struct ahd_softc *ahd) 380{ 381 struct scb *scb; 382 ahd_mode_state saved_modes; 383 u_int saved_scbptr; 384 u_int ccscbctl; 385 u_int scbid; 386 u_int next_scbid; 387 388 saved_modes = ahd_save_modes(ahd); 389 390 /* 391 * Flush the good status FIFO for completed packetized commands. 392 */ 393 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 394 saved_scbptr = ahd_get_scbptr(ahd); 395 while ((ahd_inb(ahd, LQISTAT2) & LQIGSAVAIL) != 0) { 396 u_int fifo_mode; 397 u_int i; 398 399 scbid = ahd_inw(ahd, GSFIFO); 400 scb = ahd_lookup_scb(ahd, scbid); 401 if (scb == NULL) { 402 printf("%s: Warning - GSFIFO SCB %d invalid\n", 403 ahd_name(ahd), scbid); 404 AHD_CORRECTABLE_ERROR(ahd); 405 continue; 406 } 407 /* 408 * Determine if this transaction is still active in 409 * any FIFO. If it is, we must flush that FIFO to 410 * the host before completing the command. 411 */ 412 fifo_mode = 0; 413rescan_fifos: 414 for (i = 0; i < 2; i++) { 415 /* Toggle to the other mode. */ 416 fifo_mode ^= 1; 417 ahd_set_modes(ahd, fifo_mode, fifo_mode); 418 419 if (ahd_scb_active_in_fifo(ahd, scb) == 0) 420 continue; 421 422 ahd_run_data_fifo(ahd, scb); 423 424 /* 425 * Running this FIFO may cause a CFG4DATA for 426 * this same transaction to assert in the other 427 * FIFO or a new snapshot SAVEPTRS interrupt 428 * in this FIFO. Even running a FIFO may not 429 * clear the transaction if we are still waiting 430 * for data to drain to the host. We must loop 431 * until the transaction is not active in either 432 * FIFO just to be sure. Reset our loop counter 433 * so we will visit both FIFOs again before 434 * declaring this transaction finished. We 435 * also delay a bit so that status has a chance 436 * to change before we look at this FIFO again. 437 */ 438 aic_delay(200); 439 goto rescan_fifos; 440 } 441 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 442 ahd_set_scbptr(ahd, scbid); 443 if ((ahd_inb_scbram(ahd, SCB_SGPTR) & SG_LIST_NULL) == 0 444 && ((ahd_inb_scbram(ahd, SCB_SGPTR) & SG_FULL_RESID) != 0 445 || (ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR) 446 & SG_LIST_NULL) != 0)) { 447 u_int comp_head; 448 449 /* 450 * The transfer completed with a residual. 451 * Place this SCB on the complete DMA list 452 * so that we update our in-core copy of the 453 * SCB before completing the command. 454 */ 455 ahd_outb(ahd, SCB_SCSI_STATUS, 0); 456 ahd_outb(ahd, SCB_SGPTR, 457 ahd_inb_scbram(ahd, SCB_SGPTR) 458 | SG_STATUS_VALID); 459 ahd_outw(ahd, SCB_TAG, scbid); 460 ahd_outw(ahd, SCB_NEXT_COMPLETE, SCB_LIST_NULL); 461 comp_head = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD); 462 if (SCBID_IS_NULL(comp_head)) { 463 ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, scbid); 464 ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, scbid); 465 } else { 466 u_int tail; 467 468 tail = ahd_inw(ahd, COMPLETE_DMA_SCB_TAIL); 469 ahd_set_scbptr(ahd, tail); 470 ahd_outw(ahd, SCB_NEXT_COMPLETE, scbid); 471 ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, scbid); 472 ahd_set_scbptr(ahd, scbid); 473 } 474 } else 475 ahd_complete_scb(ahd, scb); 476 } 477 ahd_set_scbptr(ahd, saved_scbptr); 478 479 /* 480 * Setup for command channel portion of flush. 481 */ 482 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 483 484 /* 485 * Wait for any inprogress DMA to complete and clear DMA state 486 * if this if for an SCB in the qinfifo. 487 */ 488 while (((ccscbctl = ahd_inb(ahd, CCSCBCTL)) & (CCARREN|CCSCBEN)) != 0) { 489 490 if ((ccscbctl & (CCSCBDIR|CCARREN)) == (CCSCBDIR|CCARREN)) { 491 if ((ccscbctl & ARRDONE) != 0) 492 break; 493 } else if ((ccscbctl & CCSCBDONE) != 0) 494 break; 495 aic_delay(200); 496 } 497 /* 498 * We leave the sequencer to cleanup in the case of DMA's to 499 * update the qoutfifo. In all other cases (DMA's to the 500 * chip or a push of an SCB from the COMPLETE_DMA_SCB list), 501 * we disable the DMA engine so that the sequencer will not 502 * attempt to handle the DMA completion. 503 */ 504 if ((ccscbctl & CCSCBDIR) != 0 || (ccscbctl & ARRDONE) != 0) 505 ahd_outb(ahd, CCSCBCTL, ccscbctl & ~(CCARREN|CCSCBEN)); 506 507 /* 508 * Complete any SCBs that just finished 509 * being DMA'ed into the qoutfifo. 510 */ 511 ahd_run_qoutfifo(ahd); 512 513 saved_scbptr = ahd_get_scbptr(ahd); 514 /* 515 * Manually update/complete any completed SCBs that are waiting to be 516 * DMA'ed back up to the host. 517 */ 518 scbid = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD); 519 while (!SCBID_IS_NULL(scbid)) { 520 uint8_t *hscb_ptr; 521 u_int i; 522 523 ahd_set_scbptr(ahd, scbid); 524 next_scbid = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 525 scb = ahd_lookup_scb(ahd, scbid); 526 if (scb == NULL) { 527 printf("%s: Warning - DMA-up and complete " 528 "SCB %d invalid\n", ahd_name(ahd), scbid); 529 AHD_CORRECTABLE_ERROR(ahd); 530 continue; 531 } 532 hscb_ptr = (uint8_t *)scb->hscb; 533 for (i = 0; i < sizeof(struct hardware_scb); i++) 534 *hscb_ptr++ = ahd_inb_scbram(ahd, SCB_BASE + i); 535 536 ahd_complete_scb(ahd, scb); 537 scbid = next_scbid; 538 } 539 ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, SCB_LIST_NULL); 540 ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, SCB_LIST_NULL); 541 542 scbid = ahd_inw(ahd, COMPLETE_ON_QFREEZE_HEAD); 543 while (!SCBID_IS_NULL(scbid)) { 544 545 ahd_set_scbptr(ahd, scbid); 546 next_scbid = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 547 scb = ahd_lookup_scb(ahd, scbid); 548 if (scb == NULL) { 549 printf("%s: Warning - Complete Qfrz SCB %d invalid\n", 550 ahd_name(ahd), scbid); 551 AHD_CORRECTABLE_ERROR(ahd); 552 continue; 553 } 554 555 ahd_complete_scb(ahd, scb); 556 scbid = next_scbid; 557 } 558 ahd_outw(ahd, COMPLETE_ON_QFREEZE_HEAD, SCB_LIST_NULL); 559 560 scbid = ahd_inw(ahd, COMPLETE_SCB_HEAD); 561 while (!SCBID_IS_NULL(scbid)) { 562 563 ahd_set_scbptr(ahd, scbid); 564 next_scbid = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 565 scb = ahd_lookup_scb(ahd, scbid); 566 if (scb == NULL) { 567 printf("%s: Warning - Complete SCB %d invalid\n", 568 ahd_name(ahd), scbid); 569 AHD_CORRECTABLE_ERROR(ahd); 570 continue; 571 } 572 573 ahd_complete_scb(ahd, scb); 574 scbid = next_scbid; 575 } 576 ahd_outw(ahd, COMPLETE_SCB_HEAD, SCB_LIST_NULL); 577 578 /* 579 * Restore state. 580 */ 581 ahd_set_scbptr(ahd, saved_scbptr); 582 ahd_restore_modes(ahd, saved_modes); 583 ahd->flags |= AHD_UPDATE_PEND_CMDS; 584} 585 586/* 587 * Determine if an SCB for a packetized transaction 588 * is active in a FIFO. 589 */ 590static int 591ahd_scb_active_in_fifo(struct ahd_softc *ahd, struct scb *scb) 592{ 593 594 /* 595 * The FIFO is only active for our transaction if 596 * the SCBPTR matches the SCB's ID and the firmware 597 * has installed a handler for the FIFO or we have 598 * a pending SAVEPTRS or CFG4DATA interrupt. 599 */ 600 if (ahd_get_scbptr(ahd) != SCB_GET_TAG(scb) 601 || ((ahd_inb(ahd, LONGJMP_ADDR+1) & INVALID_ADDR) != 0 602 && (ahd_inb(ahd, SEQINTSRC) & (CFG4DATA|SAVEPTRS)) == 0)) 603 return (0); 604 605 return (1); 606} 607 608/* 609 * Run a data fifo to completion for a transaction we know 610 * has completed across the SCSI bus (good status has been 611 * received). We are already set to the correct FIFO mode 612 * on entry to this routine. 613 * 614 * This function attempts to operate exactly as the firmware 615 * would when running this FIFO. Care must be taken to update 616 * this routine any time the firmware's FIFO algorithm is 617 * changed. 618 */ 619static void 620ahd_run_data_fifo(struct ahd_softc *ahd, struct scb *scb) 621{ 622 u_int seqintsrc; 623 624 seqintsrc = ahd_inb(ahd, SEQINTSRC); 625 if ((seqintsrc & CFG4DATA) != 0) { 626 uint32_t datacnt; 627 uint32_t sgptr; 628 629 /* 630 * Clear full residual flag. 631 */ 632 sgptr = ahd_inl_scbram(ahd, SCB_SGPTR) & ~SG_FULL_RESID; 633 ahd_outb(ahd, SCB_SGPTR, sgptr); 634 635 /* 636 * Load datacnt and address. 637 */ 638 datacnt = ahd_inl_scbram(ahd, SCB_DATACNT); 639 if ((datacnt & AHD_DMA_LAST_SEG) != 0) { 640 sgptr |= LAST_SEG; 641 ahd_outb(ahd, SG_STATE, 0); 642 } else 643 ahd_outb(ahd, SG_STATE, LOADING_NEEDED); 644 ahd_outq(ahd, HADDR, ahd_inq_scbram(ahd, SCB_DATAPTR)); 645 ahd_outl(ahd, HCNT, datacnt & AHD_SG_LEN_MASK); 646 ahd_outb(ahd, SG_CACHE_PRE, sgptr); 647 ahd_outb(ahd, DFCNTRL, PRELOADEN|SCSIEN|HDMAEN); 648 649 /* 650 * Initialize Residual Fields. 651 */ 652 ahd_outb(ahd, SCB_RESIDUAL_DATACNT+3, datacnt >> 24); 653 ahd_outl(ahd, SCB_RESIDUAL_SGPTR, sgptr & SG_PTR_MASK); 654 655 /* 656 * Mark the SCB as having a FIFO in use. 657 */ 658 ahd_outb(ahd, SCB_FIFO_USE_COUNT, 659 ahd_inb_scbram(ahd, SCB_FIFO_USE_COUNT) + 1); 660 661 /* 662 * Install a "fake" handler for this FIFO. 663 */ 664 ahd_outw(ahd, LONGJMP_ADDR, 0); 665 666 /* 667 * Notify the hardware that we have satisfied 668 * this sequencer interrupt. 669 */ 670 ahd_outb(ahd, CLRSEQINTSRC, CLRCFG4DATA); 671 } else if ((seqintsrc & SAVEPTRS) != 0) { 672 uint32_t sgptr; 673 uint32_t resid; 674 675 if ((ahd_inb(ahd, LONGJMP_ADDR+1)&INVALID_ADDR) != 0) { 676 /* 677 * Snapshot Save Pointers. All that 678 * is necessary to clear the snapshot 679 * is a CLRCHN. 680 */ 681 goto clrchn; 682 } 683 684 /* 685 * Disable S/G fetch so the DMA engine 686 * is available to future users. 687 */ 688 if ((ahd_inb(ahd, SG_STATE) & FETCH_INPROG) != 0) 689 ahd_outb(ahd, CCSGCTL, 0); 690 ahd_outb(ahd, SG_STATE, 0); 691 692 /* 693 * Flush the data FIFO. Strickly only 694 * necessary for Rev A parts. 695 */ 696 ahd_outb(ahd, DFCNTRL, ahd_inb(ahd, DFCNTRL) | FIFOFLUSH); 697 698 /* 699 * Calculate residual. 700 */ 701 sgptr = ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR); 702 resid = ahd_inl(ahd, SHCNT); 703 resid |= ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT+3) << 24; 704 ahd_outl(ahd, SCB_RESIDUAL_DATACNT, resid); 705 if ((ahd_inb(ahd, SG_CACHE_SHADOW) & LAST_SEG) == 0) { 706 /* 707 * Must back up to the correct S/G element. 708 * Typically this just means resetting our 709 * low byte to the offset in the SG_CACHE, 710 * but if we wrapped, we have to correct 711 * the other bytes of the sgptr too. 712 */ 713 if ((ahd_inb(ahd, SG_CACHE_SHADOW) & 0x80) != 0 714 && (sgptr & 0x80) == 0) 715 sgptr -= 0x100; 716 sgptr &= ~0xFF; 717 sgptr |= ahd_inb(ahd, SG_CACHE_SHADOW) 718 & SG_ADDR_MASK; 719 ahd_outl(ahd, SCB_RESIDUAL_SGPTR, sgptr); 720 ahd_outb(ahd, SCB_RESIDUAL_DATACNT + 3, 0); 721 } else if ((resid & AHD_SG_LEN_MASK) == 0) { 722 ahd_outb(ahd, SCB_RESIDUAL_SGPTR, 723 sgptr | SG_LIST_NULL); 724 } 725 /* 726 * Save Pointers. 727 */ 728 ahd_outq(ahd, SCB_DATAPTR, ahd_inq(ahd, SHADDR)); 729 ahd_outl(ahd, SCB_DATACNT, resid); 730 ahd_outl(ahd, SCB_SGPTR, sgptr); 731 ahd_outb(ahd, CLRSEQINTSRC, CLRSAVEPTRS); 732 ahd_outb(ahd, SEQIMODE, 733 ahd_inb(ahd, SEQIMODE) | ENSAVEPTRS); 734 /* 735 * If the data is to the SCSI bus, we are 736 * done, otherwise wait for FIFOEMP. 737 */ 738 if ((ahd_inb(ahd, DFCNTRL) & DIRECTION) != 0) 739 goto clrchn; 740 } else if ((ahd_inb(ahd, SG_STATE) & LOADING_NEEDED) != 0) { 741 uint32_t sgptr; 742 uint64_t data_addr; 743 uint32_t data_len; 744 u_int dfcntrl; 745 746 /* 747 * Disable S/G fetch so the DMA engine 748 * is available to future users. We won't 749 * be using the DMA engine to load segments. 750 */ 751 if ((ahd_inb(ahd, SG_STATE) & FETCH_INPROG) != 0) { 752 ahd_outb(ahd, CCSGCTL, 0); 753 ahd_outb(ahd, SG_STATE, LOADING_NEEDED); 754 } 755 756 /* 757 * Wait for the DMA engine to notice that the 758 * host transfer is enabled and that there is 759 * space in the S/G FIFO for new segments before 760 * loading more segments. 761 */ 762 if ((ahd_inb(ahd, DFSTATUS) & PRELOAD_AVAIL) != 0 763 && (ahd_inb(ahd, DFCNTRL) & HDMAENACK) != 0) { 764 765 /* 766 * Determine the offset of the next S/G 767 * element to load. 768 */ 769 sgptr = ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR); 770 sgptr &= SG_PTR_MASK; 771 if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) { 772 struct ahd_dma64_seg *sg; 773 774 sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); 775 data_addr = sg->addr; 776 data_len = sg->len; 777 sgptr += sizeof(*sg); 778 } else { 779 struct ahd_dma_seg *sg; 780 781 sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); 782 data_addr = sg->len & AHD_SG_HIGH_ADDR_MASK; 783 data_addr <<= 8; 784 data_addr |= sg->addr; 785 data_len = sg->len; 786 sgptr += sizeof(*sg); 787 } 788 789 /* 790 * Update residual information. 791 */ 792 ahd_outb(ahd, SCB_RESIDUAL_DATACNT+3, data_len >> 24); 793 ahd_outl(ahd, SCB_RESIDUAL_SGPTR, sgptr); 794 795 /* 796 * Load the S/G. 797 */ 798 if (data_len & AHD_DMA_LAST_SEG) { 799 sgptr |= LAST_SEG; 800 ahd_outb(ahd, SG_STATE, 0); 801 } 802 ahd_outq(ahd, HADDR, data_addr); 803 ahd_outl(ahd, HCNT, data_len & AHD_SG_LEN_MASK); 804 ahd_outb(ahd, SG_CACHE_PRE, sgptr & 0xFF); 805 806 /* 807 * Advertise the segment to the hardware. 808 */ 809 dfcntrl = ahd_inb(ahd, DFCNTRL)|PRELOADEN|HDMAEN; 810 if ((ahd->features & AHD_NEW_DFCNTRL_OPTS) != 0) { 811 /* 812 * Use SCSIENWRDIS so that SCSIEN 813 * is never modified by this 814 * operation. 815 */ 816 dfcntrl |= SCSIENWRDIS; 817 } 818 ahd_outb(ahd, DFCNTRL, dfcntrl); 819 } 820 } else if ((ahd_inb(ahd, SG_CACHE_SHADOW) & LAST_SEG_DONE) != 0) { 821 822 /* 823 * Transfer completed to the end of SG list 824 * and has flushed to the host. 825 */ 826 ahd_outb(ahd, SCB_SGPTR, 827 ahd_inb_scbram(ahd, SCB_SGPTR) | SG_LIST_NULL); 828 goto clrchn; 829 } else if ((ahd_inb(ahd, DFSTATUS) & FIFOEMP) != 0) { 830clrchn: 831 /* 832 * Clear any handler for this FIFO, decrement 833 * the FIFO use count for the SCB, and release 834 * the FIFO. 835 */ 836 ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR); 837 ahd_outb(ahd, SCB_FIFO_USE_COUNT, 838 ahd_inb_scbram(ahd, SCB_FIFO_USE_COUNT) - 1); 839 ahd_outb(ahd, DFFSXFRCTL, CLRCHN); 840 } 841} 842 843/* 844 * Look for entries in the QoutFIFO that have completed. 845 * The valid_tag completion field indicates the validity 846 * of the entry - the valid value toggles each time through 847 * the queue. We use the sg_status field in the completion 848 * entry to avoid referencing the hscb if the completion 849 * occurred with no errors and no residual. sg_status is 850 * a copy of the first byte (little endian) of the sgptr 851 * hscb field. 852 */ 853void 854ahd_run_qoutfifo(struct ahd_softc *ahd) 855{ 856 struct ahd_completion *completion; 857 struct scb *scb; 858 u_int scb_index; 859 860 if ((ahd->flags & AHD_RUNNING_QOUTFIFO) != 0) 861 panic("ahd_run_qoutfifo recursion"); 862 ahd->flags |= AHD_RUNNING_QOUTFIFO; 863 ahd_sync_qoutfifo(ahd, BUS_DMASYNC_POSTREAD); 864 for (;;) { 865 completion = &ahd->qoutfifo[ahd->qoutfifonext]; 866 867 if (completion->valid_tag != ahd->qoutfifonext_valid_tag) 868 break; 869 870 scb_index = aic_le16toh(completion->tag); 871 scb = ahd_lookup_scb(ahd, scb_index); 872 if (scb == NULL) { 873 printf("%s: WARNING no command for scb %d " 874 "(cmdcmplt)\nQOUTPOS = %d\n", 875 ahd_name(ahd), scb_index, 876 ahd->qoutfifonext); 877 AHD_CORRECTABLE_ERROR(ahd); 878 ahd_dump_card_state(ahd); 879 } else if ((completion->sg_status & SG_STATUS_VALID) != 0) { 880 ahd_handle_scb_status(ahd, scb); 881 } else { 882 ahd_done(ahd, scb); 883 } 884 885 ahd->qoutfifonext = (ahd->qoutfifonext+1) & (AHD_QOUT_SIZE-1); 886 if (ahd->qoutfifonext == 0) 887 ahd->qoutfifonext_valid_tag ^= QOUTFIFO_ENTRY_VALID; 888 } 889 ahd->flags &= ~AHD_RUNNING_QOUTFIFO; 890} 891 892/************************* Interrupt Handling *********************************/ 893void 894ahd_handle_hwerrint(struct ahd_softc *ahd) 895{ 896 /* 897 * Some catastrophic hardware error has occurred. 898 * Print it for the user and disable the controller. 899 */ 900 int i; 901 int error; 902 903 error = ahd_inb(ahd, ERROR); 904 for (i = 0; i < num_errors; i++) { 905 if ((error & ahd_hard_errors[i].errno) != 0) { 906 printf("%s: hwerrint, %s\n", 907 ahd_name(ahd), ahd_hard_errors[i].errmesg); 908 AHD_UNCORRECTABLE_ERROR(ahd); 909 } 910 } 911 912 ahd_dump_card_state(ahd); 913 panic("BRKADRINT"); 914 915 /* Tell everyone that this HBA is no longer available */ 916 ahd_abort_scbs(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS, 917 CAM_LUN_WILDCARD, SCB_LIST_NULL, ROLE_UNKNOWN, 918 CAM_NO_HBA); 919 920 /* Tell the system that this controller has gone away. */ 921 ahd_free(ahd); 922} 923 924void 925ahd_handle_seqint(struct ahd_softc *ahd, u_int intstat) 926{ 927 u_int seqintcode; 928 929 /* 930 * Save the sequencer interrupt code and clear the SEQINT 931 * bit. We will unpause the sequencer, if appropriate, 932 * after servicing the request. 933 */ 934 seqintcode = ahd_inb(ahd, SEQINTCODE); 935 ahd_outb(ahd, CLRINT, CLRSEQINT); 936 if ((ahd->bugs & AHD_INTCOLLISION_BUG) != 0) { 937 /* 938 * Unpause the sequencer and let it clear 939 * SEQINT by writing NO_SEQINT to it. This 940 * will cause the sequencer to be paused again, 941 * which is the expected state of this routine. 942 */ 943 ahd_unpause(ahd); 944 while (!ahd_is_paused(ahd)) 945 ; 946 ahd_outb(ahd, CLRINT, CLRSEQINT); 947 } 948 ahd_update_modes(ahd); 949#ifdef AHD_DEBUG 950 if ((ahd_debug & AHD_SHOW_MISC) != 0) 951 printf("%s: Handle Seqint Called for code %d\n", 952 ahd_name(ahd), seqintcode); 953#endif 954 switch (seqintcode) { 955 case ENTERING_NONPACK: 956 { 957 struct scb *scb; 958 u_int scbid; 959 960 AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK), 961 ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK)); 962 scbid = ahd_get_scbptr(ahd); 963 scb = ahd_lookup_scb(ahd, scbid); 964 if (scb == NULL) { 965 /* 966 * Somehow need to know if this 967 * is from a selection or reselection. 968 * From that, we can determine target 969 * ID so we at least have an I_T nexus. 970 */ 971 } else { 972 ahd_outb(ahd, SAVED_SCSIID, scb->hscb->scsiid); 973 ahd_outb(ahd, SAVED_LUN, scb->hscb->lun); 974 ahd_outb(ahd, SEQ_FLAGS, 0x0); 975 } 976 if ((ahd_inb(ahd, LQISTAT2) & LQIPHASE_OUTPKT) != 0 977 && (ahd_inb(ahd, SCSISIGO) & ATNO) != 0) { 978 /* 979 * Phase change after read stream with 980 * CRC error with P0 asserted on last 981 * packet. 982 */ 983#ifdef AHD_DEBUG 984 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) 985 printf("%s: Assuming LQIPHASE_NLQ with " 986 "P0 assertion\n", ahd_name(ahd)); 987#endif 988 } 989#ifdef AHD_DEBUG 990 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) 991 printf("%s: Entering NONPACK\n", ahd_name(ahd)); 992#endif 993 break; 994 } 995 case INVALID_SEQINT: 996 printf("%s: Invalid Sequencer interrupt occurred.\n", 997 ahd_name(ahd)); 998 ahd_dump_card_state(ahd); 999 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 1000 AHD_UNCORRECTABLE_ERROR(ahd); 1001 break; 1002 case STATUS_OVERRUN: 1003 { 1004 struct scb *scb; 1005 u_int scbid; 1006 1007 scbid = ahd_get_scbptr(ahd); 1008 scb = ahd_lookup_scb(ahd, scbid); 1009 if (scb != NULL) 1010 ahd_print_path(ahd, scb); 1011 else 1012 printf("%s: ", ahd_name(ahd)); 1013 printf("SCB %d Packetized Status Overrun", scbid); 1014 ahd_dump_card_state(ahd); 1015 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 1016 AHD_UNCORRECTABLE_ERROR(ahd); 1017 break; 1018 } 1019 case CFG4ISTAT_INTR: 1020 { 1021 struct scb *scb; 1022 u_int scbid; 1023 1024 scbid = ahd_get_scbptr(ahd); 1025 scb = ahd_lookup_scb(ahd, scbid); 1026 if (scb == NULL) { 1027 ahd_dump_card_state(ahd); 1028 printf("CFG4ISTAT: Free SCB %d referenced", scbid); 1029 AHD_FATAL_ERROR(ahd); 1030 panic("For safety"); 1031 } 1032 ahd_outq(ahd, HADDR, scb->sense_busaddr); 1033 ahd_outw(ahd, HCNT, AHD_SENSE_BUFSIZE); 1034 ahd_outb(ahd, HCNT + 2, 0); 1035 ahd_outb(ahd, SG_CACHE_PRE, SG_LAST_SEG); 1036 ahd_outb(ahd, DFCNTRL, PRELOADEN|SCSIEN|HDMAEN); 1037 break; 1038 } 1039 case ILLEGAL_PHASE: 1040 { 1041 u_int bus_phase; 1042 1043 bus_phase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK; 1044 printf("%s: ILLEGAL_PHASE 0x%x\n", 1045 ahd_name(ahd), bus_phase); 1046 1047 switch (bus_phase) { 1048 case P_DATAOUT: 1049 case P_DATAIN: 1050 case P_DATAOUT_DT: 1051 case P_DATAIN_DT: 1052 case P_MESGOUT: 1053 case P_STATUS: 1054 case P_MESGIN: 1055 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 1056 printf("%s: Issued Bus Reset.\n", ahd_name(ahd)); 1057 AHD_UNCORRECTABLE_ERROR(ahd); 1058 break; 1059 case P_COMMAND: 1060 { 1061 struct ahd_devinfo devinfo; 1062 struct scb *scb; 1063 struct ahd_initiator_tinfo *targ_info; 1064 struct ahd_tmode_tstate *tstate; 1065 struct ahd_transinfo *tinfo; 1066 u_int scbid; 1067 1068 /* 1069 * If a target takes us into the command phase 1070 * assume that it has been externally reset and 1071 * has thus lost our previous packetized negotiation 1072 * agreement. Since we have not sent an identify 1073 * message and may not have fully qualified the 1074 * connection, we change our command to TUR, assert 1075 * ATN and ABORT the task when we go to message in 1076 * phase. The OSM will see the REQUEUE_REQUEST 1077 * status and retry the command. 1078 */ 1079 scbid = ahd_get_scbptr(ahd); 1080 scb = ahd_lookup_scb(ahd, scbid); 1081 if (scb == NULL) { 1082 AHD_CORRECTABLE_ERROR(ahd); 1083 printf("Invalid phase with no valid SCB. " 1084 "Resetting bus.\n"); 1085 ahd_reset_channel(ahd, 'A', 1086 /*Initiate Reset*/TRUE); 1087 break; 1088 } 1089 ahd_compile_devinfo(&devinfo, SCB_GET_OUR_ID(scb), 1090 SCB_GET_TARGET(ahd, scb), 1091 SCB_GET_LUN(scb), 1092 SCB_GET_CHANNEL(ahd, scb), 1093 ROLE_INITIATOR); 1094 targ_info = ahd_fetch_transinfo(ahd, 1095 devinfo.channel, 1096 devinfo.our_scsiid, 1097 devinfo.target, 1098 &tstate); 1099 tinfo = &targ_info->curr; 1100 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 1101 AHD_TRANS_ACTIVE, /*paused*/TRUE); 1102 ahd_set_syncrate(ahd, &devinfo, /*period*/0, 1103 /*offset*/0, /*ppr_options*/0, 1104 AHD_TRANS_ACTIVE, /*paused*/TRUE); 1105 ahd_outb(ahd, SCB_CDB_STORE, 0); 1106 ahd_outb(ahd, SCB_CDB_STORE+1, 0); 1107 ahd_outb(ahd, SCB_CDB_STORE+2, 0); 1108 ahd_outb(ahd, SCB_CDB_STORE+3, 0); 1109 ahd_outb(ahd, SCB_CDB_STORE+4, 0); 1110 ahd_outb(ahd, SCB_CDB_STORE+5, 0); 1111 ahd_outb(ahd, SCB_CDB_LEN, 6); 1112 scb->hscb->control &= ~(TAG_ENB|SCB_TAG_TYPE); 1113 scb->hscb->control |= MK_MESSAGE; 1114 ahd_outb(ahd, SCB_CONTROL, scb->hscb->control); 1115 ahd_outb(ahd, MSG_OUT, HOST_MSG); 1116 ahd_outb(ahd, SAVED_SCSIID, scb->hscb->scsiid); 1117 /* 1118 * The lun is 0, regardless of the SCB's lun 1119 * as we have not sent an identify message. 1120 */ 1121 ahd_outb(ahd, SAVED_LUN, 0); 1122 ahd_outb(ahd, SEQ_FLAGS, 0); 1123 ahd_assert_atn(ahd); 1124 scb->flags &= ~SCB_PACKETIZED; 1125 scb->flags |= SCB_ABORT|SCB_CMDPHASE_ABORT; 1126 ahd_freeze_devq(ahd, scb); 1127 aic_set_transaction_status(scb, CAM_REQUEUE_REQ); 1128 aic_freeze_scb(scb); 1129 1130 /* 1131 * Allow the sequencer to continue with 1132 * non-pack processing. 1133 */ 1134 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 1135 ahd_outb(ahd, CLRLQOINT1, CLRLQOPHACHGINPKT); 1136 if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) { 1137 ahd_outb(ahd, CLRLQOINT1, 0); 1138 } 1139#ifdef AHD_DEBUG 1140 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { 1141 ahd_print_path(ahd, scb); 1142 AHD_CORRECTABLE_ERROR(ahd); 1143 printf("Unexpected command phase from " 1144 "packetized target\n"); 1145 } 1146#endif 1147 break; 1148 } 1149 } 1150 break; 1151 } 1152 case CFG4OVERRUN: 1153 { 1154 struct scb *scb; 1155 u_int scb_index; 1156 1157#ifdef AHD_DEBUG 1158 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { 1159 printf("%s: CFG4OVERRUN mode = %x\n", ahd_name(ahd), 1160 ahd_inb(ahd, MODE_PTR)); 1161 } 1162#endif 1163 scb_index = ahd_get_scbptr(ahd); 1164 scb = ahd_lookup_scb(ahd, scb_index); 1165 if (scb == NULL) { 1166 /* 1167 * Attempt to transfer to an SCB that is 1168 * not outstanding. 1169 */ 1170 ahd_assert_atn(ahd); 1171 ahd_outb(ahd, MSG_OUT, HOST_MSG); 1172 ahd->msgout_buf[0] = MSG_ABORT_TASK; 1173 ahd->msgout_len = 1; 1174 ahd->msgout_index = 0; 1175 ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; 1176 /* 1177 * Clear status received flag to prevent any 1178 * attempt to complete this bogus SCB. 1179 */ 1180 ahd_outb(ahd, SCB_CONTROL, 1181 ahd_inb_scbram(ahd, SCB_CONTROL) 1182 & ~STATUS_RCVD); 1183 } 1184 break; 1185 } 1186 case DUMP_CARD_STATE: 1187 { 1188 ahd_dump_card_state(ahd); 1189 break; 1190 } 1191 case PDATA_REINIT: 1192 { 1193#ifdef AHD_DEBUG 1194 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { 1195 printf("%s: PDATA_REINIT - DFCNTRL = 0x%x " 1196 "SG_CACHE_SHADOW = 0x%x\n", 1197 ahd_name(ahd), ahd_inb(ahd, DFCNTRL), 1198 ahd_inb(ahd, SG_CACHE_SHADOW)); 1199 } 1200#endif 1201 ahd_reinitialize_dataptrs(ahd); 1202 break; 1203 } 1204 case HOST_MSG_LOOP: 1205 { 1206 struct ahd_devinfo devinfo; 1207 1208 /* 1209 * The sequencer has encountered a message phase 1210 * that requires host assistance for completion. 1211 * While handling the message phase(s), we will be 1212 * notified by the sequencer after each byte is 1213 * transfered so we can track bus phase changes. 1214 * 1215 * If this is the first time we've seen a HOST_MSG_LOOP 1216 * interrupt, initialize the state of the host message 1217 * loop. 1218 */ 1219 ahd_fetch_devinfo(ahd, &devinfo); 1220 if (ahd->msg_type == MSG_TYPE_NONE) { 1221 struct scb *scb; 1222 u_int scb_index; 1223 u_int bus_phase; 1224 1225 bus_phase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK; 1226 if (bus_phase != P_MESGIN 1227 && bus_phase != P_MESGOUT) { 1228 printf("ahd_intr: HOST_MSG_LOOP bad " 1229 "phase 0x%x\n", bus_phase); 1230 AHD_CORRECTABLE_ERROR(ahd); 1231 /* 1232 * Probably transitioned to bus free before 1233 * we got here. Just punt the message. 1234 */ 1235 ahd_dump_card_state(ahd); 1236 ahd_clear_intstat(ahd); 1237 ahd_restart(ahd); 1238 return; 1239 } 1240 1241 scb_index = ahd_get_scbptr(ahd); 1242 scb = ahd_lookup_scb(ahd, scb_index); 1243 if (devinfo.role == ROLE_INITIATOR) { 1244 if (bus_phase == P_MESGOUT) 1245 ahd_setup_initiator_msgout(ahd, 1246 &devinfo, 1247 scb); 1248 else { 1249 ahd->msg_type = 1250 MSG_TYPE_INITIATOR_MSGIN; 1251 ahd->msgin_index = 0; 1252 } 1253 } 1254#ifdef AHD_TARGET_MODE 1255 else { 1256 if (bus_phase == P_MESGOUT) { 1257 ahd->msg_type = 1258 MSG_TYPE_TARGET_MSGOUT; 1259 ahd->msgin_index = 0; 1260 } 1261 else 1262 ahd_setup_target_msgin(ahd, 1263 &devinfo, 1264 scb); 1265 } 1266#endif 1267 } 1268 1269 ahd_handle_message_phase(ahd); 1270 break; 1271 } 1272 case NO_MATCH: 1273 { 1274 /* Ensure we don't leave the selection hardware on */ 1275 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 1276 ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO); 1277 1278 printf("%s:%c:%d: no active SCB for reconnecting " 1279 "target - issuing BUS DEVICE RESET\n", 1280 ahd_name(ahd), 'A', ahd_inb(ahd, SELID) >> 4); 1281 printf("SAVED_SCSIID == 0x%x, SAVED_LUN == 0x%x, " 1282 "REG0 == 0x%x ACCUM = 0x%x\n", 1283 ahd_inb(ahd, SAVED_SCSIID), ahd_inb(ahd, SAVED_LUN), 1284 ahd_inw(ahd, REG0), ahd_inb(ahd, ACCUM)); 1285 printf("SEQ_FLAGS == 0x%x, SCBPTR == 0x%x, BTT == 0x%x, " 1286 "SINDEX == 0x%x\n", 1287 ahd_inb(ahd, SEQ_FLAGS), ahd_get_scbptr(ahd), 1288 ahd_find_busy_tcl(ahd, 1289 BUILD_TCL(ahd_inb(ahd, SAVED_SCSIID), 1290 ahd_inb(ahd, SAVED_LUN))), 1291 ahd_inw(ahd, SINDEX)); 1292 printf("SELID == 0x%x, SCB_SCSIID == 0x%x, SCB_LUN == 0x%x, " 1293 "SCB_CONTROL == 0x%x\n", 1294 ahd_inb(ahd, SELID), ahd_inb_scbram(ahd, SCB_SCSIID), 1295 ahd_inb_scbram(ahd, SCB_LUN), 1296 ahd_inb_scbram(ahd, SCB_CONTROL)); 1297 printf("SCSIBUS[0] == 0x%x, SCSISIGI == 0x%x\n", 1298 ahd_inb(ahd, SCSIBUS), ahd_inb(ahd, SCSISIGI)); 1299 printf("SXFRCTL0 == 0x%x\n", ahd_inb(ahd, SXFRCTL0)); 1300 printf("SEQCTL0 == 0x%x\n", ahd_inb(ahd, SEQCTL0)); 1301 ahd_dump_card_state(ahd); 1302 ahd->msgout_buf[0] = MSG_BUS_DEV_RESET; 1303 ahd->msgout_len = 1; 1304 ahd->msgout_index = 0; 1305 ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; 1306 ahd_outb(ahd, MSG_OUT, HOST_MSG); 1307 ahd_assert_atn(ahd); 1308 break; 1309 } 1310 case PROTO_VIOLATION: 1311 { 1312 ahd_handle_proto_violation(ahd); 1313 break; 1314 } 1315 case IGN_WIDE_RES: 1316 { 1317 struct ahd_devinfo devinfo; 1318 1319 ahd_fetch_devinfo(ahd, &devinfo); 1320 ahd_handle_ign_wide_residue(ahd, &devinfo); 1321 break; 1322 } 1323 case BAD_PHASE: 1324 { 1325 u_int lastphase; 1326 1327 lastphase = ahd_inb(ahd, LASTPHASE); 1328 printf("%s:%c:%d: unknown scsi bus phase %x, " 1329 "lastphase = 0x%x. Attempting to continue\n", 1330 ahd_name(ahd), 'A', 1331 SCSIID_TARGET(ahd, ahd_inb(ahd, SAVED_SCSIID)), 1332 lastphase, ahd_inb(ahd, SCSISIGI)); 1333 AHD_CORRECTABLE_ERROR(ahd); 1334 break; 1335 } 1336 case MISSED_BUSFREE: 1337 { 1338 u_int lastphase; 1339 1340 lastphase = ahd_inb(ahd, LASTPHASE); 1341 printf("%s:%c:%d: Missed busfree. " 1342 "Lastphase = 0x%x, Curphase = 0x%x\n", 1343 ahd_name(ahd), 'A', 1344 SCSIID_TARGET(ahd, ahd_inb(ahd, SAVED_SCSIID)), 1345 lastphase, ahd_inb(ahd, SCSISIGI)); 1346 AHD_CORRECTABLE_ERROR(ahd); 1347 ahd_restart(ahd); 1348 return; 1349 } 1350 case DATA_OVERRUN: 1351 { 1352 /* 1353 * When the sequencer detects an overrun, it 1354 * places the controller in "BITBUCKET" mode 1355 * and allows the target to complete its transfer. 1356 * Unfortunately, none of the counters get updated 1357 * when the controller is in this mode, so we have 1358 * no way of knowing how large the overrun was. 1359 */ 1360 struct scb *scb; 1361 u_int scbindex; 1362#ifdef AHD_DEBUG 1363 u_int lastphase; 1364#endif 1365 1366 scbindex = ahd_get_scbptr(ahd); 1367 scb = ahd_lookup_scb(ahd, scbindex); 1368#ifdef AHD_DEBUG 1369 lastphase = ahd_inb(ahd, LASTPHASE); 1370 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { 1371 ahd_print_path(ahd, scb); 1372 printf("data overrun detected %s. Tag == 0x%x.\n", 1373 ahd_lookup_phase_entry(lastphase)->phasemsg, 1374 SCB_GET_TAG(scb)); 1375 ahd_print_path(ahd, scb); 1376 printf("%s seen Data Phase. Length = %ld. " 1377 "NumSGs = %d.\n", 1378 ahd_inb(ahd, SEQ_FLAGS) & DPHASE 1379 ? "Have" : "Haven't", 1380 aic_get_transfer_length(scb), scb->sg_count); 1381 ahd_dump_sglist(scb); 1382 } 1383#endif 1384 1385 /* 1386 * Set this and it will take effect when the 1387 * target does a command complete. 1388 */ 1389 ahd_freeze_devq(ahd, scb); 1390 aic_set_transaction_status(scb, CAM_DATA_RUN_ERR); 1391 aic_freeze_scb(scb); 1392 break; 1393 } 1394 case MKMSG_FAILED: 1395 { 1396 struct ahd_devinfo devinfo; 1397 struct scb *scb; 1398 u_int scbid; 1399 1400 ahd_fetch_devinfo(ahd, &devinfo); 1401 printf("%s:%c:%d:%d: Attempt to issue message failed\n", 1402 ahd_name(ahd), devinfo.channel, devinfo.target, 1403 devinfo.lun); 1404 scbid = ahd_get_scbptr(ahd); 1405 scb = ahd_lookup_scb(ahd, scbid); 1406 AHD_CORRECTABLE_ERROR(ahd); 1407 if (scb != NULL 1408 && (scb->flags & SCB_RECOVERY_SCB) != 0) 1409 /* 1410 * Ensure that we didn't put a second instance of this 1411 * SCB into the QINFIFO. 1412 */ 1413 ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb), 1414 SCB_GET_CHANNEL(ahd, scb), 1415 SCB_GET_LUN(scb), SCB_GET_TAG(scb), 1416 ROLE_INITIATOR, /*status*/0, 1417 SEARCH_REMOVE); 1418 ahd_outb(ahd, SCB_CONTROL, 1419 ahd_inb_scbram(ahd, SCB_CONTROL) & ~MK_MESSAGE); 1420 break; 1421 } 1422 case TASKMGMT_FUNC_COMPLETE: 1423 { 1424 u_int scbid; 1425 struct scb *scb; 1426 1427 scbid = ahd_get_scbptr(ahd); 1428 scb = ahd_lookup_scb(ahd, scbid); 1429 if (scb != NULL) { 1430 u_int lun; 1431 u_int tag; 1432 cam_status error; 1433 1434 ahd_print_path(ahd, scb); 1435 printf("Task Management Func 0x%x Complete\n", 1436 scb->hscb->task_management); 1437 lun = CAM_LUN_WILDCARD; 1438 tag = SCB_LIST_NULL; 1439 1440 switch (scb->hscb->task_management) { 1441 case SIU_TASKMGMT_ABORT_TASK: 1442 tag = SCB_GET_TAG(scb); 1443 case SIU_TASKMGMT_ABORT_TASK_SET: 1444 case SIU_TASKMGMT_CLEAR_TASK_SET: 1445 lun = scb->hscb->lun; 1446 error = CAM_REQ_ABORTED; 1447 ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 1448 'A', lun, tag, ROLE_INITIATOR, 1449 error); 1450 break; 1451 case SIU_TASKMGMT_LUN_RESET: 1452 lun = scb->hscb->lun; 1453 case SIU_TASKMGMT_TARGET_RESET: 1454 { 1455 struct ahd_devinfo devinfo; 1456 1457 ahd_scb_devinfo(ahd, &devinfo, scb); 1458 error = CAM_BDR_SENT; 1459 ahd_handle_devreset(ahd, &devinfo, lun, 1460 CAM_BDR_SENT, 1461 lun != CAM_LUN_WILDCARD 1462 ? "Lun Reset" 1463 : "Target Reset", 1464 /*verbose_level*/0); 1465 break; 1466 } 1467 default: 1468 panic("Unexpected TaskMgmt Func\n"); 1469 break; 1470 } 1471 } 1472 break; 1473 } 1474 case TASKMGMT_CMD_CMPLT_OKAY: 1475 { 1476 u_int scbid; 1477 struct scb *scb; 1478 1479 /* 1480 * An ABORT TASK TMF failed to be delivered before 1481 * the targeted command completed normally. 1482 */ 1483 scbid = ahd_get_scbptr(ahd); 1484 scb = ahd_lookup_scb(ahd, scbid); 1485 if (scb != NULL) { 1486 /* 1487 * Remove the second instance of this SCB from 1488 * the QINFIFO if it is still there. 1489 */ 1490 ahd_print_path(ahd, scb); 1491 printf("SCB completes before TMF\n"); 1492 /* 1493 * Handle losing the race. Wait until any 1494 * current selection completes. We will then 1495 * set the TMF back to zero in this SCB so that 1496 * the sequencer doesn't bother to issue another 1497 * sequencer interrupt for its completion. 1498 */ 1499 while ((ahd_inb(ahd, SCSISEQ0) & ENSELO) != 0 1500 && (ahd_inb(ahd, SSTAT0) & SELDO) == 0 1501 && (ahd_inb(ahd, SSTAT1) & SELTO) == 0) 1502 ; 1503 ahd_outb(ahd, SCB_TASK_MANAGEMENT, 0); 1504 ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb), 1505 SCB_GET_CHANNEL(ahd, scb), 1506 SCB_GET_LUN(scb), SCB_GET_TAG(scb), 1507 ROLE_INITIATOR, /*status*/0, 1508 SEARCH_REMOVE); 1509 } 1510 break; 1511 } 1512 case TRACEPOINT0: 1513 case TRACEPOINT1: 1514 case TRACEPOINT2: 1515 case TRACEPOINT3: 1516 printf("%s: Tracepoint %d\n", ahd_name(ahd), 1517 seqintcode - TRACEPOINT0); 1518 break; 1519 case NO_SEQINT: 1520 break; 1521 case SAW_HWERR: 1522 ahd_handle_hwerrint(ahd); 1523 break; 1524 default: 1525 printf("%s: Unexpected SEQINTCODE %d\n", ahd_name(ahd), 1526 seqintcode); 1527 break; 1528 } 1529 /* 1530 * The sequencer is paused immediately on 1531 * a SEQINT, so we should restart it when 1532 * we're done. 1533 */ 1534 ahd_unpause(ahd); 1535} 1536 1537void 1538ahd_handle_scsiint(struct ahd_softc *ahd, u_int intstat) 1539{ 1540 struct scb *scb; 1541 u_int status0; 1542 u_int status3; 1543 u_int status; 1544 u_int lqistat1; 1545 u_int lqostat0; 1546 u_int scbid; 1547 u_int busfreetime; 1548 1549 ahd_update_modes(ahd); 1550 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 1551 1552 status3 = ahd_inb(ahd, SSTAT3) & (NTRAMPERR|OSRAMPERR); 1553 status0 = ahd_inb(ahd, SSTAT0) & (IOERR|OVERRUN|SELDI|SELDO); 1554 status = ahd_inb(ahd, SSTAT1) & (SELTO|SCSIRSTI|BUSFREE|SCSIPERR); 1555 lqistat1 = ahd_inb(ahd, LQISTAT1); 1556 lqostat0 = ahd_inb(ahd, LQOSTAT0); 1557 busfreetime = ahd_inb(ahd, SSTAT2) & BUSFREETIME; 1558 if ((status0 & (SELDI|SELDO)) != 0) { 1559 u_int simode0; 1560 1561 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 1562 simode0 = ahd_inb(ahd, SIMODE0); 1563 status0 &= simode0 & (IOERR|OVERRUN|SELDI|SELDO); 1564 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 1565 } 1566 scbid = ahd_get_scbptr(ahd); 1567 scb = ahd_lookup_scb(ahd, scbid); 1568 if (scb != NULL 1569 && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) != 0) 1570 scb = NULL; 1571 1572 if ((status0 & IOERR) != 0) { 1573 u_int now_lvd; 1574 1575 now_lvd = ahd_inb(ahd, SBLKCTL) & ENAB40; 1576 printf("%s: Transceiver State Has Changed to %s mode\n", 1577 ahd_name(ahd), now_lvd ? "LVD" : "SE"); 1578 ahd_outb(ahd, CLRSINT0, CLRIOERR); 1579 /* 1580 * A change in I/O mode is equivalent to a bus reset. 1581 */ 1582 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 1583 ahd_pause(ahd); 1584 ahd_setup_iocell_workaround(ahd); 1585 ahd_unpause(ahd); 1586 } else if ((status0 & OVERRUN) != 0) { 1587 1588 printf("%s: SCSI offset overrun detected. Resetting bus.\n", 1589 ahd_name(ahd)); 1590 AHD_CORRECTABLE_ERROR(ahd); 1591 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 1592 } else if ((status & SCSIRSTI) != 0) { 1593 1594 printf("%s: Someone reset channel A\n", ahd_name(ahd)); 1595 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/FALSE); 1596 AHD_UNCORRECTABLE_ERROR(ahd); 1597 } else if ((status & SCSIPERR) != 0) { 1598 1599 /* Make sure the sequencer is in a safe location. */ 1600 ahd_clear_critical_section(ahd); 1601 1602 ahd_handle_transmission_error(ahd); 1603 } else if (lqostat0 != 0) { 1604 1605 printf("%s: lqostat0 == 0x%x!\n", ahd_name(ahd), lqostat0); 1606 ahd_outb(ahd, CLRLQOINT0, lqostat0); 1607 if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) 1608 ahd_outb(ahd, CLRLQOINT1, 0); 1609 } else if ((status & SELTO) != 0) { 1610 u_int scbid; 1611 1612 /* Stop the selection */ 1613 ahd_outb(ahd, SCSISEQ0, 0); 1614 1615 /* Make sure the sequencer is in a safe location. */ 1616 ahd_clear_critical_section(ahd); 1617 1618 /* No more pending messages */ 1619 ahd_clear_msg_state(ahd); 1620 1621 /* Clear interrupt state */ 1622 ahd_outb(ahd, CLRSINT1, CLRSELTIMEO|CLRBUSFREE|CLRSCSIPERR); 1623 1624 /* 1625 * Although the driver does not care about the 1626 * 'Selection in Progress' status bit, the busy 1627 * LED does. SELINGO is only cleared by a sucessfull 1628 * selection, so we must manually clear it to insure 1629 * the LED turns off just incase no future successful 1630 * selections occur (e.g. no devices on the bus). 1631 */ 1632 ahd_outb(ahd, CLRSINT0, CLRSELINGO); 1633 1634 scbid = ahd_inw(ahd, WAITING_TID_HEAD); 1635 scb = ahd_lookup_scb(ahd, scbid); 1636 if (scb == NULL) { 1637 printf("%s: ahd_intr - referenced scb not " 1638 "valid during SELTO scb(0x%x)\n", 1639 ahd_name(ahd), scbid); 1640 ahd_dump_card_state(ahd); 1641 AHD_UNCORRECTABLE_ERROR(ahd); 1642 } else { 1643 struct ahd_devinfo devinfo; 1644#ifdef AHD_DEBUG 1645 if ((ahd_debug & AHD_SHOW_SELTO) != 0) { 1646 ahd_print_path(ahd, scb); 1647 printf("Saw Selection Timeout for SCB 0x%x\n", 1648 scbid); 1649 } 1650#endif 1651 ahd_scb_devinfo(ahd, &devinfo, scb); 1652 aic_set_transaction_status(scb, CAM_SEL_TIMEOUT); 1653 ahd_freeze_devq(ahd, scb); 1654 1655 /* 1656 * Cancel any pending transactions on the device 1657 * now that it seems to be missing. This will 1658 * also revert us to async/narrow transfers until 1659 * we can renegotiate with the device. 1660 */ 1661 ahd_handle_devreset(ahd, &devinfo, 1662 CAM_LUN_WILDCARD, 1663 CAM_SEL_TIMEOUT, 1664 "Selection Timeout", 1665 /*verbose_level*/1); 1666 } 1667 ahd_outb(ahd, CLRINT, CLRSCSIINT); 1668 ahd_iocell_first_selection(ahd); 1669 ahd_unpause(ahd); 1670 } else if ((status0 & (SELDI|SELDO)) != 0) { 1671 1672 ahd_iocell_first_selection(ahd); 1673 ahd_unpause(ahd); 1674 } else if (status3 != 0) { 1675 printf("%s: SCSI Cell parity error SSTAT3 == 0x%x\n", 1676 ahd_name(ahd), status3); 1677 AHD_CORRECTABLE_ERROR(ahd); 1678 ahd_outb(ahd, CLRSINT3, status3); 1679 } else if ((lqistat1 & (LQIPHASE_LQ|LQIPHASE_NLQ)) != 0) { 1680 1681 /* Make sure the sequencer is in a safe location. */ 1682 ahd_clear_critical_section(ahd); 1683 1684 ahd_handle_lqiphase_error(ahd, lqistat1); 1685 } else if ((lqistat1 & LQICRCI_NLQ) != 0) { 1686 /* 1687 * This status can be delayed during some 1688 * streaming operations. The SCSIPHASE 1689 * handler has already dealt with this case 1690 * so just clear the error. 1691 */ 1692 ahd_outb(ahd, CLRLQIINT1, CLRLQICRCI_NLQ); 1693 } else if ((status & BUSFREE) != 0 1694 || (lqistat1 & LQOBUSFREE) != 0) { 1695 u_int lqostat1; 1696 int restart; 1697 int clear_fifo; 1698 int packetized; 1699 u_int mode; 1700 1701 /* 1702 * Clear our selection hardware as soon as possible. 1703 * We may have an entry in the waiting Q for this target, 1704 * that is affected by this busfree and we don't want to 1705 * go about selecting the target while we handle the event. 1706 */ 1707 ahd_outb(ahd, SCSISEQ0, 0); 1708 1709 /* Make sure the sequencer is in a safe location. */ 1710 ahd_clear_critical_section(ahd); 1711 1712 /* 1713 * Determine what we were up to at the time of 1714 * the busfree. 1715 */ 1716 mode = AHD_MODE_SCSI; 1717 busfreetime = ahd_inb(ahd, SSTAT2) & BUSFREETIME; 1718 lqostat1 = ahd_inb(ahd, LQOSTAT1); 1719 switch (busfreetime) { 1720 case BUSFREE_DFF0: 1721 case BUSFREE_DFF1: 1722 { 1723 u_int scbid; 1724 struct scb *scb; 1725 1726 mode = busfreetime == BUSFREE_DFF0 1727 ? AHD_MODE_DFF0 : AHD_MODE_DFF1; 1728 ahd_set_modes(ahd, mode, mode); 1729 scbid = ahd_get_scbptr(ahd); 1730 scb = ahd_lookup_scb(ahd, scbid); 1731 if (scb == NULL) { 1732 printf("%s: Invalid SCB %d in DFF%d " 1733 "during unexpected busfree\n", 1734 ahd_name(ahd), scbid, mode); 1735 packetized = 0; 1736 AHD_CORRECTABLE_ERROR(ahd); 1737 } else 1738 packetized = (scb->flags & SCB_PACKETIZED) != 0; 1739 clear_fifo = 1; 1740 break; 1741 } 1742 case BUSFREE_LQO: 1743 clear_fifo = 0; 1744 packetized = 1; 1745 break; 1746 default: 1747 clear_fifo = 0; 1748 packetized = (lqostat1 & LQOBUSFREE) != 0; 1749 if (!packetized 1750 && ahd_inb(ahd, LASTPHASE) == P_BUSFREE 1751 && (ahd_inb(ahd, SSTAT0) & SELDI) == 0 1752 && ((ahd_inb(ahd, SSTAT0) & SELDO) == 0 1753 || (ahd_inb(ahd, SCSISEQ0) & ENSELO) == 0)) 1754 /* 1755 * Assume packetized if we are not 1756 * on the bus in a non-packetized 1757 * capacity and any pending selection 1758 * was a packetized selection. 1759 */ 1760 packetized = 1; 1761 break; 1762 } 1763 1764#ifdef AHD_DEBUG 1765 if ((ahd_debug & AHD_SHOW_MISC) != 0) 1766 printf("Saw Busfree. Busfreetime = 0x%x.\n", 1767 busfreetime); 1768#endif 1769 /* 1770 * Busfrees that occur in non-packetized phases are 1771 * handled by the nonpkt_busfree handler. 1772 */ 1773 if (packetized && ahd_inb(ahd, LASTPHASE) == P_BUSFREE) { 1774 restart = ahd_handle_pkt_busfree(ahd, busfreetime); 1775 } else { 1776 packetized = 0; 1777 restart = ahd_handle_nonpkt_busfree(ahd); 1778 } 1779 /* 1780 * Clear the busfree interrupt status. The setting of 1781 * the interrupt is a pulse, so in a perfect world, we 1782 * would not need to muck with the ENBUSFREE logic. This 1783 * would ensure that if the bus moves on to another 1784 * connection, busfree protection is still in force. If 1785 * BUSFREEREV is broken, however, we must manually clear 1786 * the ENBUSFREE if the busfree occurred during a non-pack 1787 * connection so that we don't get false positives during 1788 * future, packetized, connections. 1789 */ 1790 ahd_outb(ahd, CLRSINT1, CLRBUSFREE); 1791 if (packetized == 0 1792 && (ahd->bugs & AHD_BUSFREEREV_BUG) != 0) 1793 ahd_outb(ahd, SIMODE1, 1794 ahd_inb(ahd, SIMODE1) & ~ENBUSFREE); 1795 1796 if (clear_fifo) 1797 ahd_clear_fifo(ahd, mode); 1798 1799 ahd_clear_msg_state(ahd); 1800 ahd_outb(ahd, CLRINT, CLRSCSIINT); 1801 if (restart) { 1802 ahd_restart(ahd); 1803 } else { 1804 ahd_unpause(ahd); 1805 } 1806 } else { 1807 printf("%s: Missing case in ahd_handle_scsiint. status = %x\n", 1808 ahd_name(ahd), status); 1809 ahd_dump_card_state(ahd); 1810 ahd_clear_intstat(ahd); 1811 ahd_unpause(ahd); 1812 } 1813} 1814 1815static void 1816ahd_handle_transmission_error(struct ahd_softc *ahd) 1817{ 1818 struct scb *scb; 1819 u_int scbid; 1820 u_int lqistat1; 1821 u_int lqistat2; 1822 u_int msg_out; 1823 u_int curphase; 1824 u_int lastphase; 1825 u_int perrdiag; 1826 u_int cur_col; 1827 int silent; 1828 1829 scb = NULL; 1830 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 1831 lqistat1 = ahd_inb(ahd, LQISTAT1) & ~(LQIPHASE_LQ|LQIPHASE_NLQ); 1832 lqistat2 = ahd_inb(ahd, LQISTAT2); 1833 if ((lqistat1 & (LQICRCI_NLQ|LQICRCI_LQ)) == 0 1834 && (ahd->bugs & AHD_NLQICRC_DELAYED_BUG) != 0) { 1835 u_int lqistate; 1836 1837 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 1838 lqistate = ahd_inb(ahd, LQISTATE); 1839 if ((lqistate >= 0x1E && lqistate <= 0x24) 1840 || (lqistate == 0x29)) { 1841#ifdef AHD_DEBUG 1842 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { 1843 printf("%s: NLQCRC found via LQISTATE\n", 1844 ahd_name(ahd)); 1845 } 1846#endif 1847 lqistat1 |= LQICRCI_NLQ; 1848 } 1849 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 1850 } 1851 1852 ahd_outb(ahd, CLRLQIINT1, lqistat1); 1853 lastphase = ahd_inb(ahd, LASTPHASE); 1854 curphase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK; 1855 perrdiag = ahd_inb(ahd, PERRDIAG); 1856 msg_out = MSG_INITIATOR_DET_ERR; 1857 ahd_outb(ahd, CLRSINT1, CLRSCSIPERR); 1858 1859 /* 1860 * Try to find the SCB associated with this error. 1861 */ 1862 silent = FALSE; 1863 if (lqistat1 == 0 1864 || (lqistat1 & LQICRCI_NLQ) != 0) { 1865 if ((lqistat1 & (LQICRCI_NLQ|LQIOVERI_NLQ)) != 0) 1866 ahd_set_active_fifo(ahd); 1867 scbid = ahd_get_scbptr(ahd); 1868 scb = ahd_lookup_scb(ahd, scbid); 1869 if (scb != NULL && SCB_IS_SILENT(scb)) 1870 silent = TRUE; 1871 } 1872 1873 cur_col = 0; 1874 if (silent == FALSE) { 1875 printf("%s: Transmission error detected\n", ahd_name(ahd)); 1876 ahd_lqistat1_print(lqistat1, &cur_col, 50); 1877 ahd_lastphase_print(lastphase, &cur_col, 50); 1878 ahd_scsisigi_print(curphase, &cur_col, 50); 1879 ahd_perrdiag_print(perrdiag, &cur_col, 50); 1880 printf("\n"); 1881 AHD_CORRECTABLE_ERROR(ahd); 1882 ahd_dump_card_state(ahd); 1883 } 1884 1885 if ((lqistat1 & (LQIOVERI_LQ|LQIOVERI_NLQ)) != 0) { 1886 if (silent == FALSE) { 1887 printf("%s: Gross protocol error during incoming " 1888 "packet. lqistat1 == 0x%x. Resetting bus.\n", 1889 ahd_name(ahd), lqistat1); 1890 AHD_UNCORRECTABLE_ERROR(ahd); 1891 } 1892 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 1893 return; 1894 } else if ((lqistat1 & LQICRCI_LQ) != 0) { 1895 /* 1896 * A CRC error has been detected on an incoming LQ. 1897 * The bus is currently hung on the last ACK. 1898 * Hit LQIRETRY to release the last ack, and 1899 * wait for the sequencer to determine that ATNO 1900 * is asserted while in message out to take us 1901 * to our host message loop. No NONPACKREQ or 1902 * LQIPHASE type errors will occur in this 1903 * scenario. After this first LQIRETRY, the LQI 1904 * manager will be in ISELO where it will 1905 * happily sit until another packet phase begins. 1906 * Unexpected bus free detection is enabled 1907 * through any phases that occur after we release 1908 * this last ack until the LQI manager sees a 1909 * packet phase. This implies we may have to 1910 * ignore a perfectly valid "unexected busfree" 1911 * after our "initiator detected error" message is 1912 * sent. A busfree is the expected response after 1913 * we tell the target that it's L_Q was corrupted. 1914 * (SPI4R09 10.7.3.3.3) 1915 */ 1916 ahd_outb(ahd, LQCTL2, LQIRETRY); 1917 printf("LQIRetry for LQICRCI_LQ to release ACK\n"); 1918 AHD_CORRECTABLE_ERROR(ahd); 1919 } else if ((lqistat1 & LQICRCI_NLQ) != 0) { 1920 /* 1921 * We detected a CRC error in a NON-LQ packet. 1922 * The hardware has varying behavior in this situation 1923 * depending on whether this packet was part of a 1924 * stream or not. 1925 * 1926 * PKT by PKT mode: 1927 * The hardware has already acked the complete packet. 1928 * If the target honors our outstanding ATN condition, 1929 * we should be (or soon will be) in MSGOUT phase. 1930 * This will trigger the LQIPHASE_LQ status bit as the 1931 * hardware was expecting another LQ. Unexpected 1932 * busfree detection is enabled. Once LQIPHASE_LQ is 1933 * true (first entry into host message loop is much 1934 * the same), we must clear LQIPHASE_LQ and hit 1935 * LQIRETRY so the hardware is ready to handle 1936 * a future LQ. NONPACKREQ will not be asserted again 1937 * once we hit LQIRETRY until another packet is 1938 * processed. The target may either go busfree 1939 * or start another packet in response to our message. 1940 * 1941 * Read Streaming P0 asserted: 1942 * If we raise ATN and the target completes the entire 1943 * stream (P0 asserted during the last packet), the 1944 * hardware will ack all data and return to the ISTART 1945 * state. When the target reponds to our ATN condition, 1946 * LQIPHASE_LQ will be asserted. We should respond to 1947 * this with an LQIRETRY to prepare for any future 1948 * packets. NONPACKREQ will not be asserted again 1949 * once we hit LQIRETRY until another packet is 1950 * processed. The target may either go busfree or 1951 * start another packet in response to our message. 1952 * Busfree detection is enabled. 1953 * 1954 * Read Streaming P0 not asserted: 1955 * If we raise ATN and the target transitions to 1956 * MSGOUT in or after a packet where P0 is not 1957 * asserted, the hardware will assert LQIPHASE_NLQ. 1958 * We should respond to the LQIPHASE_NLQ with an 1959 * LQIRETRY. Should the target stay in a non-pkt 1960 * phase after we send our message, the hardware 1961 * will assert LQIPHASE_LQ. Recovery is then just as 1962 * listed above for the read streaming with P0 asserted. 1963 * Busfree detection is enabled. 1964 */ 1965 if (silent == FALSE) 1966 printf("LQICRC_NLQ\n"); 1967 if (scb == NULL) { 1968 printf("%s: No SCB valid for LQICRC_NLQ. " 1969 "Resetting bus\n", ahd_name(ahd)); 1970 AHD_UNCORRECTABLE_ERROR(ahd); 1971 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 1972 return; 1973 } 1974 } else if ((lqistat1 & LQIBADLQI) != 0) { 1975 printf("Need to handle BADLQI!\n"); 1976 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 1977 return; 1978 } else if ((perrdiag & (PARITYERR|PREVPHASE)) == PARITYERR) { 1979 if ((curphase & ~P_DATAIN_DT) != 0) { 1980 /* Ack the byte. So we can continue. */ 1981 if (silent == FALSE) 1982 printf("Acking %s to clear perror\n", 1983 ahd_lookup_phase_entry(curphase)->phasemsg); 1984 ahd_inb(ahd, SCSIDAT); 1985 } 1986 1987 if (curphase == P_MESGIN) 1988 msg_out = MSG_PARITY_ERROR; 1989 } 1990 1991 /* 1992 * We've set the hardware to assert ATN if we 1993 * get a parity error on "in" phases, so all we 1994 * need to do is stuff the message buffer with 1995 * the appropriate message. "In" phases have set 1996 * mesg_out to something other than MSG_NOP. 1997 */ 1998 ahd->send_msg_perror = msg_out; 1999 if (scb != NULL && msg_out == MSG_INITIATOR_DET_ERR) 2000 scb->flags |= SCB_TRANSMISSION_ERROR; 2001 ahd_outb(ahd, MSG_OUT, HOST_MSG); 2002 ahd_outb(ahd, CLRINT, CLRSCSIINT); 2003 ahd_unpause(ahd); 2004} 2005 2006static void 2007ahd_handle_lqiphase_error(struct ahd_softc *ahd, u_int lqistat1) 2008{ 2009 /* 2010 * Clear the sources of the interrupts. 2011 */ 2012 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 2013 ahd_outb(ahd, CLRLQIINT1, lqistat1); 2014 2015 /* 2016 * If the "illegal" phase changes were in response 2017 * to our ATN to flag a CRC error, AND we ended up 2018 * on packet boundaries, clear the error, restart the 2019 * LQI manager as appropriate, and go on our merry 2020 * way toward sending the message. Otherwise, reset 2021 * the bus to clear the error. 2022 */ 2023 ahd_set_active_fifo(ahd); 2024 if ((ahd_inb(ahd, SCSISIGO) & ATNO) != 0 2025 && (ahd_inb(ahd, MDFFSTAT) & DLZERO) != 0) { 2026 if ((lqistat1 & LQIPHASE_LQ) != 0) { 2027 printf("LQIRETRY for LQIPHASE_LQ\n"); 2028 AHD_CORRECTABLE_ERROR(ahd); 2029 ahd_outb(ahd, LQCTL2, LQIRETRY); 2030 } else if ((lqistat1 & LQIPHASE_NLQ) != 0) { 2031 printf("LQIRETRY for LQIPHASE_NLQ\n"); 2032 AHD_CORRECTABLE_ERROR(ahd); 2033 ahd_outb(ahd, LQCTL2, LQIRETRY); 2034 } else 2035 panic("ahd_handle_lqiphase_error: No phase errors\n"); 2036 ahd_dump_card_state(ahd); 2037 ahd_outb(ahd, CLRINT, CLRSCSIINT); 2038 ahd_unpause(ahd); 2039 } else { 2040 printf("Reseting Channel for LQI Phase error\n"); 2041 AHD_CORRECTABLE_ERROR(ahd); 2042 ahd_dump_card_state(ahd); 2043 ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); 2044 } 2045} 2046 2047/* 2048 * Packetized unexpected or expected busfree. 2049 * Entered in mode based on busfreetime. 2050 */ 2051static int 2052ahd_handle_pkt_busfree(struct ahd_softc *ahd, u_int busfreetime) 2053{ 2054 u_int lqostat1; 2055 2056 AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK), 2057 ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK)); 2058 lqostat1 = ahd_inb(ahd, LQOSTAT1); 2059 if ((lqostat1 & LQOBUSFREE) != 0) { 2060 struct scb *scb; 2061 u_int scbid; 2062 u_int saved_scbptr; 2063 u_int waiting_h; 2064 u_int waiting_t; 2065 u_int next; 2066 2067 /* 2068 * The LQO manager detected an unexpected busfree 2069 * either: 2070 * 2071 * 1) During an outgoing LQ. 2072 * 2) After an outgoing LQ but before the first 2073 * REQ of the command packet. 2074 * 3) During an outgoing command packet. 2075 * 2076 * In all cases, CURRSCB is pointing to the 2077 * SCB that encountered the failure. Clean 2078 * up the queue, clear SELDO and LQOBUSFREE, 2079 * and allow the sequencer to restart the select 2080 * out at its lesure. 2081 */ 2082 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 2083 scbid = ahd_inw(ahd, CURRSCB); 2084 scb = ahd_lookup_scb(ahd, scbid); 2085 if (scb == NULL) 2086 panic("SCB not valid during LQOBUSFREE"); 2087 /* 2088 * Clear the status. 2089 */ 2090 ahd_outb(ahd, CLRLQOINT1, CLRLQOBUSFREE); 2091 if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) 2092 ahd_outb(ahd, CLRLQOINT1, 0); 2093 ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO); 2094 ahd_flush_device_writes(ahd); 2095 ahd_outb(ahd, CLRSINT0, CLRSELDO); 2096 2097 /* 2098 * Return the LQO manager to its idle loop. It will 2099 * not do this automatically if the busfree occurs 2100 * after the first REQ of either the LQ or command 2101 * packet or between the LQ and command packet. 2102 */ 2103 ahd_outb(ahd, LQCTL2, ahd_inb(ahd, LQCTL2) | LQOTOIDLE); 2104 2105 /* 2106 * Update the waiting for selection queue so 2107 * we restart on the correct SCB. 2108 */ 2109 waiting_h = ahd_inw(ahd, WAITING_TID_HEAD); 2110 saved_scbptr = ahd_get_scbptr(ahd); 2111 if (waiting_h != scbid) { 2112 2113 ahd_outw(ahd, WAITING_TID_HEAD, scbid); 2114 waiting_t = ahd_inw(ahd, WAITING_TID_TAIL); 2115 if (waiting_t == waiting_h) { 2116 ahd_outw(ahd, WAITING_TID_TAIL, scbid); 2117 next = SCB_LIST_NULL; 2118 } else { 2119 ahd_set_scbptr(ahd, waiting_h); 2120 next = ahd_inw_scbram(ahd, SCB_NEXT2); 2121 } 2122 ahd_set_scbptr(ahd, scbid); 2123 ahd_outw(ahd, SCB_NEXT2, next); 2124 } 2125 ahd_set_scbptr(ahd, saved_scbptr); 2126 if (scb->crc_retry_count < AHD_MAX_LQ_CRC_ERRORS) { 2127 if (SCB_IS_SILENT(scb) == FALSE) { 2128 ahd_print_path(ahd, scb); 2129 printf("Probable outgoing LQ CRC error. " 2130 "Retrying command\n"); 2131 AHD_CORRECTABLE_ERROR(ahd); 2132 } 2133 scb->crc_retry_count++; 2134 } else { 2135 aic_set_transaction_status(scb, CAM_UNCOR_PARITY); 2136 aic_freeze_scb(scb); 2137 ahd_freeze_devq(ahd, scb); 2138 } 2139 /* Return unpausing the sequencer. */ 2140 return (0); 2141 } else if ((ahd_inb(ahd, PERRDIAG) & PARITYERR) != 0) { 2142 /* 2143 * Ignore what are really parity errors that 2144 * occur on the last REQ of a free running 2145 * clock prior to going busfree. Some drives 2146 * do not properly active negate just before 2147 * going busfree resulting in a parity glitch. 2148 */ 2149 ahd_outb(ahd, CLRSINT1, CLRSCSIPERR|CLRBUSFREE); 2150#ifdef AHD_DEBUG 2151 if ((ahd_debug & AHD_SHOW_MASKED_ERRORS) != 0) 2152 printf("%s: Parity on last REQ detected " 2153 "during busfree phase.\n", 2154 ahd_name(ahd)); 2155#endif 2156 /* Return unpausing the sequencer. */ 2157 return (0); 2158 } 2159 if (ahd->src_mode != AHD_MODE_SCSI) { 2160 u_int scbid; 2161 struct scb *scb; 2162 2163 scbid = ahd_get_scbptr(ahd); 2164 scb = ahd_lookup_scb(ahd, scbid); 2165 ahd_print_path(ahd, scb); 2166 printf("Unexpected PKT busfree condition\n"); 2167 AHD_UNCORRECTABLE_ERROR(ahd); 2168 ahd_dump_card_state(ahd); 2169 ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 'A', 2170 SCB_GET_LUN(scb), SCB_GET_TAG(scb), 2171 ROLE_INITIATOR, CAM_UNEXP_BUSFREE); 2172 2173 /* Return restarting the sequencer. */ 2174 return (1); 2175 } 2176 printf("%s: Unexpected PKT busfree condition\n", ahd_name(ahd)); 2177 AHD_UNCORRECTABLE_ERROR(ahd); 2178 ahd_dump_card_state(ahd); 2179 /* Restart the sequencer. */ 2180 return (1); 2181} 2182 2183/* 2184 * Non-packetized unexpected or expected busfree. 2185 */ 2186static int 2187ahd_handle_nonpkt_busfree(struct ahd_softc *ahd) 2188{ 2189 struct ahd_devinfo devinfo; 2190 struct scb *scb; 2191 u_int lastphase; 2192 u_int saved_scsiid; 2193 u_int saved_lun; 2194 u_int target; 2195 u_int initiator_role_id; 2196 u_int scbid; 2197 u_int ppr_busfree; 2198 int printerror; 2199 2200 /* 2201 * Look at what phase we were last in. If its message out, 2202 * chances are pretty good that the busfree was in response 2203 * to one of our abort requests. 2204 */ 2205 lastphase = ahd_inb(ahd, LASTPHASE); 2206 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); 2207 saved_lun = ahd_inb(ahd, SAVED_LUN); 2208 target = SCSIID_TARGET(ahd, saved_scsiid); 2209 initiator_role_id = SCSIID_OUR_ID(saved_scsiid); 2210 ahd_compile_devinfo(&devinfo, initiator_role_id, 2211 target, saved_lun, 'A', ROLE_INITIATOR); 2212 printerror = 1; 2213 2214 scbid = ahd_get_scbptr(ahd); 2215 scb = ahd_lookup_scb(ahd, scbid); 2216 if (scb != NULL 2217 && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) != 0) 2218 scb = NULL; 2219 2220 ppr_busfree = (ahd->msg_flags & MSG_FLAG_EXPECT_PPR_BUSFREE) != 0; 2221 if (lastphase == P_MESGOUT) { 2222 u_int tag; 2223 2224 tag = SCB_LIST_NULL; 2225 if (ahd_sent_msg(ahd, AHDMSG_1B, MSG_ABORT_TAG, TRUE) 2226 || ahd_sent_msg(ahd, AHDMSG_1B, MSG_ABORT, TRUE)) { 2227 int found; 2228 int sent_msg; 2229 2230 if (scb == NULL) { 2231 ahd_print_devinfo(ahd, &devinfo); 2232 printf("Abort for unidentified " 2233 "connection completed.\n"); 2234 /* restart the sequencer. */ 2235 return (1); 2236 } 2237 sent_msg = ahd->msgout_buf[ahd->msgout_index - 1]; 2238 ahd_print_path(ahd, scb); 2239 printf("SCB %d - Abort%s Completed.\n", 2240 SCB_GET_TAG(scb), 2241 sent_msg == MSG_ABORT_TAG ? "" : " Tag"); 2242 2243 if (sent_msg == MSG_ABORT_TAG) 2244 tag = SCB_GET_TAG(scb); 2245 2246 if ((scb->flags & SCB_CMDPHASE_ABORT) != 0) { 2247 /* 2248 * This abort is in response to an 2249 * unexpected switch to command phase 2250 * for a packetized connection. Since 2251 * the identify message was never sent, 2252 * "saved lun" is 0. We really want to 2253 * abort only the SCB that encountered 2254 * this error, which could have a different 2255 * lun. The SCB will be retried so the OS 2256 * will see the UA after renegotiating to 2257 * packetized. 2258 */ 2259 tag = SCB_GET_TAG(scb); 2260 saved_lun = scb->hscb->lun; 2261 } 2262 found = ahd_abort_scbs(ahd, target, 'A', saved_lun, 2263 tag, ROLE_INITIATOR, 2264 CAM_REQ_ABORTED); 2265 printf("found == 0x%x\n", found); 2266 printerror = 0; 2267 } else if (ahd_sent_msg(ahd, AHDMSG_1B, 2268 MSG_BUS_DEV_RESET, TRUE)) { 2269#ifdef __FreeBSD__ 2270 /* 2271 * Don't mark the user's request for this BDR 2272 * as completing with CAM_BDR_SENT. CAM3 2273 * specifies CAM_REQ_CMP. 2274 */ 2275 if (scb != NULL 2276 && scb->io_ctx->ccb_h.func_code== XPT_RESET_DEV 2277 && ahd_match_scb(ahd, scb, target, 'A', 2278 CAM_LUN_WILDCARD, SCB_LIST_NULL, 2279 ROLE_INITIATOR)) 2280 aic_set_transaction_status(scb, CAM_REQ_CMP); 2281#endif 2282 ahd_handle_devreset(ahd, &devinfo, CAM_LUN_WILDCARD, 2283 CAM_BDR_SENT, "Bus Device Reset", 2284 /*verbose_level*/0); 2285 printerror = 0; 2286 } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, FALSE) 2287 && ppr_busfree == 0) { 2288 struct ahd_initiator_tinfo *tinfo; 2289 struct ahd_tmode_tstate *tstate; 2290 2291 /* 2292 * PPR Rejected. 2293 * 2294 * If the previous negotiation was packetized, 2295 * this could be because the device has been 2296 * reset without our knowledge. Force our 2297 * current negotiation to async and retry the 2298 * negotiation. Otherwise retry the command 2299 * with non-ppr negotiation. 2300 */ 2301#ifdef AHD_DEBUG 2302 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 2303 printf("PPR negotiation rejected busfree.\n"); 2304#endif 2305 tinfo = ahd_fetch_transinfo(ahd, devinfo.channel, 2306 devinfo.our_scsiid, 2307 devinfo.target, &tstate); 2308 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ)!=0) { 2309 ahd_set_width(ahd, &devinfo, 2310 MSG_EXT_WDTR_BUS_8_BIT, 2311 AHD_TRANS_CUR, 2312 /*paused*/TRUE); 2313 ahd_set_syncrate(ahd, &devinfo, 2314 /*period*/0, /*offset*/0, 2315 /*ppr_options*/0, 2316 AHD_TRANS_CUR, 2317 /*paused*/TRUE); 2318 /* 2319 * The expect PPR busfree handler below 2320 * will effect the retry and necessary 2321 * abort. 2322 */ 2323 } else { 2324 tinfo->curr.transport_version = 2; 2325 tinfo->goal.transport_version = 2; 2326 tinfo->goal.ppr_options = 0; 2327 /* 2328 * Remove any SCBs in the waiting for selection 2329 * queue that may also be for this target so 2330 * that command ordering is preserved. 2331 */ 2332 ahd_freeze_devq(ahd, scb); 2333 ahd_qinfifo_requeue_tail(ahd, scb); 2334 printerror = 0; 2335 } 2336 } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, FALSE) 2337 && ppr_busfree == 0) { 2338 /* 2339 * Negotiation Rejected. Go-narrow and 2340 * retry command. 2341 */ 2342#ifdef AHD_DEBUG 2343 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 2344 printf("WDTR negotiation rejected busfree.\n"); 2345#endif 2346 ahd_set_width(ahd, &devinfo, 2347 MSG_EXT_WDTR_BUS_8_BIT, 2348 AHD_TRANS_CUR|AHD_TRANS_GOAL, 2349 /*paused*/TRUE); 2350 /* 2351 * Remove any SCBs in the waiting for selection 2352 * queue that may also be for this target so that 2353 * command ordering is preserved. 2354 */ 2355 ahd_freeze_devq(ahd, scb); 2356 ahd_qinfifo_requeue_tail(ahd, scb); 2357 printerror = 0; 2358 } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, FALSE) 2359 && ppr_busfree == 0) { 2360 /* 2361 * Negotiation Rejected. Go-async and 2362 * retry command. 2363 */ 2364#ifdef AHD_DEBUG 2365 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 2366 printf("SDTR negotiation rejected busfree.\n"); 2367#endif 2368 ahd_set_syncrate(ahd, &devinfo, 2369 /*period*/0, /*offset*/0, 2370 /*ppr_options*/0, 2371 AHD_TRANS_CUR|AHD_TRANS_GOAL, 2372 /*paused*/TRUE); 2373 /* 2374 * Remove any SCBs in the waiting for selection 2375 * queue that may also be for this target so that 2376 * command ordering is preserved. 2377 */ 2378 ahd_freeze_devq(ahd, scb); 2379 ahd_qinfifo_requeue_tail(ahd, scb); 2380 printerror = 0; 2381 } else if ((ahd->msg_flags & MSG_FLAG_EXPECT_IDE_BUSFREE) != 0 2382 && ahd_sent_msg(ahd, AHDMSG_1B, 2383 MSG_INITIATOR_DET_ERR, TRUE)) { 2384 2385#ifdef AHD_DEBUG 2386 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 2387 printf("Expected IDE Busfree\n"); 2388#endif 2389 printerror = 0; 2390 } else if ((ahd->msg_flags & MSG_FLAG_EXPECT_QASREJ_BUSFREE) 2391 && ahd_sent_msg(ahd, AHDMSG_1B, 2392 MSG_MESSAGE_REJECT, TRUE)) { 2393 2394#ifdef AHD_DEBUG 2395 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 2396 printf("Expected QAS Reject Busfree\n"); 2397#endif 2398 printerror = 0; 2399 } 2400 } 2401 2402 /* 2403 * The busfree required flag is honored at the end of 2404 * the message phases. We check it last in case we 2405 * had to send some other message that caused a busfree. 2406 */ 2407 if (printerror != 0 2408 && (lastphase == P_MESGIN || lastphase == P_MESGOUT) 2409 && ((ahd->msg_flags & MSG_FLAG_EXPECT_PPR_BUSFREE) != 0)) { 2410 2411 ahd_freeze_devq(ahd, scb); 2412 aic_set_transaction_status(scb, CAM_REQUEUE_REQ); 2413 aic_freeze_scb(scb); 2414 if ((ahd->msg_flags & MSG_FLAG_IU_REQ_CHANGED) != 0) { 2415 ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 2416 SCB_GET_CHANNEL(ahd, scb), 2417 SCB_GET_LUN(scb), SCB_LIST_NULL, 2418 ROLE_INITIATOR, CAM_REQ_ABORTED); 2419 } else { 2420#ifdef AHD_DEBUG 2421 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 2422 printf("PPR Negotiation Busfree.\n"); 2423#endif 2424 ahd_done(ahd, scb); 2425 } 2426 printerror = 0; 2427 } 2428 if (printerror != 0) { 2429 int aborted; 2430 2431 aborted = 0; 2432 if (scb != NULL) { 2433 u_int tag; 2434 2435 if ((scb->hscb->control & TAG_ENB) != 0) 2436 tag = SCB_GET_TAG(scb); 2437 else 2438 tag = SCB_LIST_NULL; 2439 ahd_print_path(ahd, scb); 2440 aborted = ahd_abort_scbs(ahd, target, 'A', 2441 SCB_GET_LUN(scb), tag, 2442 ROLE_INITIATOR, 2443 CAM_UNEXP_BUSFREE); 2444 } else { 2445 /* 2446 * We had not fully identified this connection, 2447 * so we cannot abort anything. 2448 */ 2449 printf("%s: ", ahd_name(ahd)); 2450 } 2451 printf("Unexpected busfree %s, %d SCBs aborted, " 2452 "PRGMCNT == 0x%x\n", 2453 ahd_lookup_phase_entry(lastphase)->phasemsg, 2454 aborted, 2455 ahd_inw(ahd, PRGMCNT)); 2456 AHD_UNCORRECTABLE_ERROR(ahd); 2457 ahd_dump_card_state(ahd); 2458 if (lastphase != P_BUSFREE) 2459 ahd_force_renegotiation(ahd, &devinfo); 2460 } 2461 /* Always restart the sequencer. */ 2462 return (1); 2463} 2464 2465static void 2466ahd_handle_proto_violation(struct ahd_softc *ahd) 2467{ 2468 struct ahd_devinfo devinfo; 2469 struct scb *scb; 2470 u_int scbid; 2471 u_int seq_flags; 2472 u_int curphase; 2473 u_int lastphase; 2474 int found; 2475 2476 ahd_fetch_devinfo(ahd, &devinfo); 2477 scbid = ahd_get_scbptr(ahd); 2478 scb = ahd_lookup_scb(ahd, scbid); 2479 seq_flags = ahd_inb(ahd, SEQ_FLAGS); 2480 curphase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK; 2481 lastphase = ahd_inb(ahd, LASTPHASE); 2482 if ((seq_flags & NOT_IDENTIFIED) != 0) { 2483 2484 /* 2485 * The reconnecting target either did not send an 2486 * identify message, or did, but we didn't find an SCB 2487 * to match. 2488 */ 2489 ahd_print_devinfo(ahd, &devinfo); 2490 printf("Target did not send an IDENTIFY message. " 2491 "LASTPHASE = 0x%x.\n", lastphase); 2492 AHD_UNCORRECTABLE_ERROR(ahd); 2493 scb = NULL; 2494 } else if (scb == NULL) { 2495 /* 2496 * We don't seem to have an SCB active for this 2497 * transaction. Print an error and reset the bus. 2498 */ 2499 ahd_print_devinfo(ahd, &devinfo); 2500 printf("No SCB found during protocol violation\n"); 2501 AHD_UNCORRECTABLE_ERROR(ahd); 2502 goto proto_violation_reset; 2503 } else { 2504 aic_set_transaction_status(scb, CAM_SEQUENCE_FAIL); 2505 if ((seq_flags & NO_CDB_SENT) != 0) { 2506 ahd_print_path(ahd, scb); 2507 printf("No or incomplete CDB sent to device.\n"); 2508 AHD_UNCORRECTABLE_ERROR(ahd); 2509 } else if ((ahd_inb_scbram(ahd, SCB_CONTROL) 2510 & STATUS_RCVD) == 0) { 2511 /* 2512 * The target never bothered to provide status to 2513 * us prior to completing the command. Since we don't 2514 * know the disposition of this command, we must attempt 2515 * to abort it. Assert ATN and prepare to send an abort 2516 * message. 2517 */ 2518 ahd_print_path(ahd, scb); 2519 printf("Completed command without status.\n"); 2520 } else { 2521 ahd_print_path(ahd, scb); 2522 printf("Unknown protocol violation.\n"); 2523 AHD_UNCORRECTABLE_ERROR(ahd); 2524 ahd_dump_card_state(ahd); 2525 } 2526 } 2527 if ((lastphase & ~P_DATAIN_DT) == 0 2528 || lastphase == P_COMMAND) { 2529proto_violation_reset: 2530 /* 2531 * Target either went directly to data 2532 * phase or didn't respond to our ATN. 2533 * The only safe thing to do is to blow 2534 * it away with a bus reset. 2535 */ 2536 found = ahd_reset_channel(ahd, 'A', TRUE); 2537 printf("%s: Issued Channel %c Bus Reset. " 2538 "%d SCBs aborted\n", ahd_name(ahd), 'A', found); 2539 AHD_UNCORRECTABLE_ERROR(ahd); 2540 } else { 2541 /* 2542 * Leave the selection hardware off in case 2543 * this abort attempt will affect yet to 2544 * be sent commands. 2545 */ 2546 ahd_outb(ahd, SCSISEQ0, 2547 ahd_inb(ahd, SCSISEQ0) & ~ENSELO); 2548 ahd_assert_atn(ahd); 2549 ahd_outb(ahd, MSG_OUT, HOST_MSG); 2550 if (scb == NULL) { 2551 ahd_print_devinfo(ahd, &devinfo); 2552 ahd->msgout_buf[0] = MSG_ABORT_TASK; 2553 ahd->msgout_len = 1; 2554 ahd->msgout_index = 0; 2555 ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; 2556 } else { 2557 ahd_print_path(ahd, scb); 2558 scb->flags |= SCB_ABORT; 2559 } 2560 printf("Protocol violation %s. Attempting to abort.\n", 2561 ahd_lookup_phase_entry(curphase)->phasemsg); 2562 AHD_UNCORRECTABLE_ERROR(ahd); 2563 } 2564} 2565 2566/* 2567 * Force renegotiation to occur the next time we initiate 2568 * a command to the current device. 2569 */ 2570static void 2571ahd_force_renegotiation(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 2572{ 2573 struct ahd_initiator_tinfo *targ_info; 2574 struct ahd_tmode_tstate *tstate; 2575 2576#ifdef AHD_DEBUG 2577 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { 2578 ahd_print_devinfo(ahd, devinfo); 2579 printf("Forcing renegotiation\n"); 2580 } 2581#endif 2582 targ_info = ahd_fetch_transinfo(ahd, 2583 devinfo->channel, 2584 devinfo->our_scsiid, 2585 devinfo->target, 2586 &tstate); 2587 ahd_update_neg_request(ahd, devinfo, tstate, 2588 targ_info, AHD_NEG_IF_NON_ASYNC); 2589} 2590 2591#define AHD_MAX_STEPS 2000 2592void 2593ahd_clear_critical_section(struct ahd_softc *ahd) 2594{ 2595 ahd_mode_state saved_modes; 2596 int stepping; 2597 int steps; 2598 int first_instr; 2599 u_int simode0; 2600 u_int simode1; 2601 u_int simode3; 2602 u_int lqimode0; 2603 u_int lqimode1; 2604 u_int lqomode0; 2605 u_int lqomode1; 2606 2607 if (ahd->num_critical_sections == 0) 2608 return; 2609 2610 stepping = FALSE; 2611 steps = 0; 2612 first_instr = 0; 2613 simode0 = 0; 2614 simode1 = 0; 2615 simode3 = 0; 2616 lqimode0 = 0; 2617 lqimode1 = 0; 2618 lqomode0 = 0; 2619 lqomode1 = 0; 2620 saved_modes = ahd_save_modes(ahd); 2621 for (;;) { 2622 struct cs *cs; 2623 u_int seqaddr; 2624 u_int i; 2625 2626 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 2627 seqaddr = ahd_inw(ahd, CURADDR); 2628 2629 cs = ahd->critical_sections; 2630 for (i = 0; i < ahd->num_critical_sections; i++, cs++) { 2631 2632 if (cs->begin < seqaddr && cs->end >= seqaddr) 2633 break; 2634 } 2635 2636 if (i == ahd->num_critical_sections) 2637 break; 2638 2639 if (steps > AHD_MAX_STEPS) { 2640 printf("%s: Infinite loop in critical section\n" 2641 "%s: First Instruction 0x%x now 0x%x\n", 2642 ahd_name(ahd), ahd_name(ahd), first_instr, 2643 seqaddr); 2644 AHD_FATAL_ERROR(ahd); 2645 ahd_dump_card_state(ahd); 2646 panic("critical section loop"); 2647 } 2648 2649 steps++; 2650#ifdef AHD_DEBUG 2651 if ((ahd_debug & AHD_SHOW_MISC) != 0) 2652 printf("%s: Single stepping at 0x%x\n", ahd_name(ahd), 2653 seqaddr); 2654#endif 2655 if (stepping == FALSE) { 2656 2657 first_instr = seqaddr; 2658 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 2659 simode0 = ahd_inb(ahd, SIMODE0); 2660 simode3 = ahd_inb(ahd, SIMODE3); 2661 lqimode0 = ahd_inb(ahd, LQIMODE0); 2662 lqimode1 = ahd_inb(ahd, LQIMODE1); 2663 lqomode0 = ahd_inb(ahd, LQOMODE0); 2664 lqomode1 = ahd_inb(ahd, LQOMODE1); 2665 ahd_outb(ahd, SIMODE0, 0); 2666 ahd_outb(ahd, SIMODE3, 0); 2667 ahd_outb(ahd, LQIMODE0, 0); 2668 ahd_outb(ahd, LQIMODE1, 0); 2669 ahd_outb(ahd, LQOMODE0, 0); 2670 ahd_outb(ahd, LQOMODE1, 0); 2671 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 2672 simode1 = ahd_inb(ahd, SIMODE1); 2673 /* 2674 * We don't clear ENBUSFREE. Unfortunately 2675 * we cannot re-enable busfree detection within 2676 * the current connection, so we must leave it 2677 * on while single stepping. 2678 */ 2679 ahd_outb(ahd, SIMODE1, simode1 & ENBUSFREE); 2680 ahd_outb(ahd, SEQCTL0, ahd_inb(ahd, SEQCTL0) | STEP); 2681 stepping = TRUE; 2682 } 2683 ahd_outb(ahd, CLRSINT1, CLRBUSFREE); 2684 ahd_outb(ahd, CLRINT, CLRSCSIINT); 2685 ahd_set_modes(ahd, ahd->saved_src_mode, ahd->saved_dst_mode); 2686 ahd_outb(ahd, HCNTRL, ahd->unpause); 2687 while (!ahd_is_paused(ahd)) 2688 aic_delay(200); 2689 ahd_update_modes(ahd); 2690 } 2691 if (stepping) { 2692 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 2693 ahd_outb(ahd, SIMODE0, simode0); 2694 ahd_outb(ahd, SIMODE3, simode3); 2695 ahd_outb(ahd, LQIMODE0, lqimode0); 2696 ahd_outb(ahd, LQIMODE1, lqimode1); 2697 ahd_outb(ahd, LQOMODE0, lqomode0); 2698 ahd_outb(ahd, LQOMODE1, lqomode1); 2699 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 2700 ahd_outb(ahd, SEQCTL0, ahd_inb(ahd, SEQCTL0) & ~STEP); 2701 ahd_outb(ahd, SIMODE1, simode1); 2702 /* 2703 * SCSIINT seems to glitch occassionally when 2704 * the interrupt masks are restored. Clear SCSIINT 2705 * one more time so that only persistent errors 2706 * are seen as a real interrupt. 2707 */ 2708 ahd_outb(ahd, CLRINT, CLRSCSIINT); 2709 } 2710 ahd_restore_modes(ahd, saved_modes); 2711} 2712 2713/* 2714 * Clear any pending interrupt status. 2715 */ 2716void 2717ahd_clear_intstat(struct ahd_softc *ahd) 2718{ 2719 AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK), 2720 ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK)); 2721 /* Clear any interrupt conditions this may have caused */ 2722 ahd_outb(ahd, CLRLQIINT0, CLRLQIATNQAS|CLRLQICRCT1|CLRLQICRCT2 2723 |CLRLQIBADLQT|CLRLQIATNLQ|CLRLQIATNCMD); 2724 ahd_outb(ahd, CLRLQIINT1, CLRLQIPHASE_LQ|CLRLQIPHASE_NLQ|CLRLIQABORT 2725 |CLRLQICRCI_LQ|CLRLQICRCI_NLQ|CLRLQIBADLQI 2726 |CLRLQIOVERI_LQ|CLRLQIOVERI_NLQ|CLRNONPACKREQ); 2727 ahd_outb(ahd, CLRLQOINT0, CLRLQOTARGSCBPERR|CLRLQOSTOPT2|CLRLQOATNLQ 2728 |CLRLQOATNPKT|CLRLQOTCRC); 2729 ahd_outb(ahd, CLRLQOINT1, CLRLQOINITSCBPERR|CLRLQOSTOPI2|CLRLQOBADQAS 2730 |CLRLQOBUSFREE|CLRLQOPHACHGINPKT); 2731 if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) { 2732 ahd_outb(ahd, CLRLQOINT0, 0); 2733 ahd_outb(ahd, CLRLQOINT1, 0); 2734 } 2735 ahd_outb(ahd, CLRSINT3, CLRNTRAMPERR|CLROSRAMPERR); 2736 ahd_outb(ahd, CLRSINT1, CLRSELTIMEO|CLRATNO|CLRSCSIRSTI 2737 |CLRBUSFREE|CLRSCSIPERR|CLRREQINIT); 2738 ahd_outb(ahd, CLRSINT0, CLRSELDO|CLRSELDI|CLRSELINGO 2739 |CLRIOERR|CLROVERRUN); 2740 ahd_outb(ahd, CLRINT, CLRSCSIINT); 2741} 2742 2743/**************************** Debugging Routines ******************************/ 2744#ifdef AHD_DEBUG 2745uint32_t ahd_debug = AHD_DEBUG_OPTS; 2746#endif 2747void 2748ahd_print_scb(struct scb *scb) 2749{ 2750 struct hardware_scb *hscb; 2751 int i; 2752 2753 hscb = scb->hscb; 2754 printf("scb:%p control:0x%x scsiid:0x%x lun:%d cdb_len:%d\n", 2755 (void *)scb, 2756 hscb->control, 2757 hscb->scsiid, 2758 hscb->lun, 2759 hscb->cdb_len); 2760 printf("Shared Data: "); 2761 for (i = 0; i < sizeof(hscb->shared_data.idata.cdb); i++) 2762 printf("%#02x", hscb->shared_data.idata.cdb[i]); 2763 printf(" dataptr:%#x%x datacnt:%#x sgptr:%#x tag:%#x\n", 2764 (uint32_t)((aic_le64toh(hscb->dataptr) >> 32) & 0xFFFFFFFF), 2765 (uint32_t)(aic_le64toh(hscb->dataptr) & 0xFFFFFFFF), 2766 aic_le32toh(hscb->datacnt), 2767 aic_le32toh(hscb->sgptr), 2768 SCB_GET_TAG(scb)); 2769 ahd_dump_sglist(scb); 2770} 2771 2772void 2773ahd_dump_sglist(struct scb *scb) 2774{ 2775 int i; 2776 2777 if (scb->sg_count > 0) { 2778 if ((scb->ahd_softc->flags & AHD_64BIT_ADDRESSING) != 0) { 2779 struct ahd_dma64_seg *sg_list; 2780 2781 sg_list = (struct ahd_dma64_seg*)scb->sg_list; 2782 for (i = 0; i < scb->sg_count; i++) { 2783 uint64_t addr; 2784 uint32_t len; 2785 2786 addr = aic_le64toh(sg_list[i].addr); 2787 len = aic_le32toh(sg_list[i].len); 2788 printf("sg[%d] - Addr 0x%x%x : Length %d%s\n", 2789 i, 2790 (uint32_t)((addr >> 32) & 0xFFFFFFFF), 2791 (uint32_t)(addr & 0xFFFFFFFF), 2792 sg_list[i].len & AHD_SG_LEN_MASK, 2793 (sg_list[i].len & AHD_DMA_LAST_SEG) 2794 ? " Last" : ""); 2795 } 2796 } else { 2797 struct ahd_dma_seg *sg_list; 2798 2799 sg_list = (struct ahd_dma_seg*)scb->sg_list; 2800 for (i = 0; i < scb->sg_count; i++) { 2801 uint32_t len; 2802 2803 len = aic_le32toh(sg_list[i].len); 2804 printf("sg[%d] - Addr 0x%x%x : Length %d%s\n", 2805 i, 2806 (len & AHD_SG_HIGH_ADDR_MASK) >> 24, 2807 aic_le32toh(sg_list[i].addr), 2808 len & AHD_SG_LEN_MASK, 2809 len & AHD_DMA_LAST_SEG ? " Last" : ""); 2810 } 2811 } 2812 } 2813} 2814 2815/************************* Transfer Negotiation *******************************/ 2816/* 2817 * Allocate per target mode instance (ID we respond to as a target) 2818 * transfer negotiation data structures. 2819 */ 2820static struct ahd_tmode_tstate * 2821ahd_alloc_tstate(struct ahd_softc *ahd, u_int scsi_id, char channel) 2822{ 2823 struct ahd_tmode_tstate *master_tstate; 2824 struct ahd_tmode_tstate *tstate; 2825 int i; 2826 2827 master_tstate = ahd->enabled_targets[ahd->our_id]; 2828 if (ahd->enabled_targets[scsi_id] != NULL 2829 && ahd->enabled_targets[scsi_id] != master_tstate) 2830 panic("%s: ahd_alloc_tstate - Target already allocated", 2831 ahd_name(ahd)); 2832 tstate = malloc(sizeof(*tstate), M_DEVBUF, M_NOWAIT); 2833 if (tstate == NULL) 2834 return (NULL); 2835 2836 /* 2837 * If we have allocated a master tstate, copy user settings from 2838 * the master tstate (taken from SRAM or the EEPROM) for this 2839 * channel, but reset our current and goal settings to async/narrow 2840 * until an initiator talks to us. 2841 */ 2842 if (master_tstate != NULL) { 2843 memcpy(tstate, master_tstate, sizeof(*tstate)); 2844 memset(tstate->enabled_luns, 0, sizeof(tstate->enabled_luns)); 2845 for (i = 0; i < 16; i++) { 2846 memset(&tstate->transinfo[i].curr, 0, 2847 sizeof(tstate->transinfo[i].curr)); 2848 memset(&tstate->transinfo[i].goal, 0, 2849 sizeof(tstate->transinfo[i].goal)); 2850 } 2851 } else 2852 memset(tstate, 0, sizeof(*tstate)); 2853 ahd->enabled_targets[scsi_id] = tstate; 2854 return (tstate); 2855} 2856 2857#ifdef AHD_TARGET_MODE 2858/* 2859 * Free per target mode instance (ID we respond to as a target) 2860 * transfer negotiation data structures. 2861 */ 2862static void 2863ahd_free_tstate(struct ahd_softc *ahd, u_int scsi_id, char channel, int force) 2864{ 2865 struct ahd_tmode_tstate *tstate; 2866 2867 /* 2868 * Don't clean up our "master" tstate. 2869 * It has our default user settings. 2870 */ 2871 if (scsi_id == ahd->our_id 2872 && force == FALSE) 2873 return; 2874 2875 tstate = ahd->enabled_targets[scsi_id]; 2876 if (tstate != NULL) 2877 free(tstate, M_DEVBUF); 2878 ahd->enabled_targets[scsi_id] = NULL; 2879} 2880#endif 2881 2882/* 2883 * Called when we have an active connection to a target on the bus, 2884 * this function finds the nearest period to the input period limited 2885 * by the capabilities of the bus connectivity of and sync settings for 2886 * the target. 2887 */ 2888void 2889ahd_devlimited_syncrate(struct ahd_softc *ahd, 2890 struct ahd_initiator_tinfo *tinfo, 2891 u_int *period, u_int *ppr_options, role_t role) 2892{ 2893 struct ahd_transinfo *transinfo; 2894 u_int maxsync; 2895 2896 if ((ahd_inb(ahd, SBLKCTL) & ENAB40) != 0 2897 && (ahd_inb(ahd, SSTAT2) & EXP_ACTIVE) == 0) { 2898 maxsync = AHD_SYNCRATE_PACED; 2899 } else { 2900 maxsync = AHD_SYNCRATE_ULTRA; 2901 /* Can't do DT related options on an SE bus */ 2902 *ppr_options &= MSG_EXT_PPR_QAS_REQ; 2903 } 2904 /* 2905 * Never allow a value higher than our current goal 2906 * period otherwise we may allow a target initiated 2907 * negotiation to go above the limit as set by the 2908 * user. In the case of an initiator initiated 2909 * sync negotiation, we limit based on the user 2910 * setting. This allows the system to still accept 2911 * incoming negotiations even if target initiated 2912 * negotiation is not performed. 2913 */ 2914 if (role == ROLE_TARGET) 2915 transinfo = &tinfo->user; 2916 else 2917 transinfo = &tinfo->goal; 2918 *ppr_options &= (transinfo->ppr_options|MSG_EXT_PPR_PCOMP_EN); 2919 if (transinfo->width == MSG_EXT_WDTR_BUS_8_BIT) { 2920 maxsync = MAX(maxsync, AHD_SYNCRATE_ULTRA2); 2921 *ppr_options &= ~MSG_EXT_PPR_DT_REQ; 2922 } 2923 if (transinfo->period == 0) { 2924 *period = 0; 2925 *ppr_options = 0; 2926 } else { 2927 *period = MAX(*period, transinfo->period); 2928 ahd_find_syncrate(ahd, period, ppr_options, maxsync); 2929 } 2930} 2931 2932/* 2933 * Look up the valid period to SCSIRATE conversion in our table. 2934 * Return the period and offset that should be sent to the target 2935 * if this was the beginning of an SDTR. 2936 */ 2937void 2938ahd_find_syncrate(struct ahd_softc *ahd, u_int *period, 2939 u_int *ppr_options, u_int maxsync) 2940{ 2941 if (*period < maxsync) 2942 *period = maxsync; 2943 2944 if ((*ppr_options & MSG_EXT_PPR_DT_REQ) != 0 2945 && *period > AHD_SYNCRATE_MIN_DT) 2946 *ppr_options &= ~MSG_EXT_PPR_DT_REQ; 2947 2948 if (*period > AHD_SYNCRATE_MIN) 2949 *period = 0; 2950 2951 /* Honor PPR option conformance rules. */ 2952 if (*period > AHD_SYNCRATE_PACED) 2953 *ppr_options &= ~MSG_EXT_PPR_RTI; 2954 2955 if ((*ppr_options & MSG_EXT_PPR_IU_REQ) == 0) 2956 *ppr_options &= (MSG_EXT_PPR_DT_REQ|MSG_EXT_PPR_QAS_REQ); 2957 2958 if ((*ppr_options & MSG_EXT_PPR_DT_REQ) == 0) 2959 *ppr_options &= MSG_EXT_PPR_QAS_REQ; 2960 2961 /* Skip all PACED only entries if IU is not available */ 2962 if ((*ppr_options & MSG_EXT_PPR_IU_REQ) == 0 2963 && *period < AHD_SYNCRATE_DT) 2964 *period = AHD_SYNCRATE_DT; 2965 2966 /* Skip all DT only entries if DT is not available */ 2967 if ((*ppr_options & MSG_EXT_PPR_DT_REQ) == 0 2968 && *period < AHD_SYNCRATE_ULTRA2) 2969 *period = AHD_SYNCRATE_ULTRA2; 2970} 2971 2972/* 2973 * Truncate the given synchronous offset to a value the 2974 * current adapter type and syncrate are capable of. 2975 */ 2976void 2977ahd_validate_offset(struct ahd_softc *ahd, 2978 struct ahd_initiator_tinfo *tinfo, 2979 u_int period, u_int *offset, int wide, 2980 role_t role) 2981{ 2982 u_int maxoffset; 2983 2984 /* Limit offset to what we can do */ 2985 if (period == 0) 2986 maxoffset = 0; 2987 else if (period <= AHD_SYNCRATE_PACED) { 2988 if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) 2989 maxoffset = MAX_OFFSET_PACED_BUG; 2990 else 2991 maxoffset = MAX_OFFSET_PACED; 2992 } else 2993 maxoffset = MAX_OFFSET_NON_PACED; 2994 *offset = MIN(*offset, maxoffset); 2995 if (tinfo != NULL) { 2996 if (role == ROLE_TARGET) 2997 *offset = MIN(*offset, tinfo->user.offset); 2998 else 2999 *offset = MIN(*offset, tinfo->goal.offset); 3000 } 3001} 3002 3003/* 3004 * Truncate the given transfer width parameter to a value the 3005 * current adapter type is capable of. 3006 */ 3007void 3008ahd_validate_width(struct ahd_softc *ahd, struct ahd_initiator_tinfo *tinfo, 3009 u_int *bus_width, role_t role) 3010{ 3011 switch (*bus_width) { 3012 default: 3013 if (ahd->features & AHD_WIDE) { 3014 /* Respond Wide */ 3015 *bus_width = MSG_EXT_WDTR_BUS_16_BIT; 3016 break; 3017 } 3018 /* FALLTHROUGH */ 3019 case MSG_EXT_WDTR_BUS_8_BIT: 3020 *bus_width = MSG_EXT_WDTR_BUS_8_BIT; 3021 break; 3022 } 3023 if (tinfo != NULL) { 3024 if (role == ROLE_TARGET) 3025 *bus_width = MIN(tinfo->user.width, *bus_width); 3026 else 3027 *bus_width = MIN(tinfo->goal.width, *bus_width); 3028 } 3029} 3030 3031/* 3032 * Update the bitmask of targets for which the controller should 3033 * negotiate with at the next convenient oportunity. This currently 3034 * means the next time we send the initial identify messages for 3035 * a new transaction. 3036 */ 3037int 3038ahd_update_neg_request(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3039 struct ahd_tmode_tstate *tstate, 3040 struct ahd_initiator_tinfo *tinfo, ahd_neg_type neg_type) 3041{ 3042 u_int auto_negotiate_orig; 3043 3044 auto_negotiate_orig = tstate->auto_negotiate; 3045 if (neg_type == AHD_NEG_ALWAYS) { 3046 /* 3047 * Force our "current" settings to be 3048 * unknown so that unless a bus reset 3049 * occurs the need to renegotiate is 3050 * recorded persistently. 3051 */ 3052 if ((ahd->features & AHD_WIDE) != 0) 3053 tinfo->curr.width = AHD_WIDTH_UNKNOWN; 3054 tinfo->curr.period = AHD_PERIOD_UNKNOWN; 3055 tinfo->curr.offset = AHD_OFFSET_UNKNOWN; 3056 } 3057 if (tinfo->curr.period != tinfo->goal.period 3058 || tinfo->curr.width != tinfo->goal.width 3059 || tinfo->curr.offset != tinfo->goal.offset 3060 || tinfo->curr.ppr_options != tinfo->goal.ppr_options 3061 || (neg_type == AHD_NEG_IF_NON_ASYNC 3062 && (tinfo->goal.offset != 0 3063 || tinfo->goal.width != MSG_EXT_WDTR_BUS_8_BIT 3064 || tinfo->goal.ppr_options != 0))) 3065 tstate->auto_negotiate |= devinfo->target_mask; 3066 else 3067 tstate->auto_negotiate &= ~devinfo->target_mask; 3068 3069 return (auto_negotiate_orig != tstate->auto_negotiate); 3070} 3071 3072/* 3073 * Update the user/goal/curr tables of synchronous negotiation 3074 * parameters as well as, in the case of a current or active update, 3075 * any data structures on the host controller. In the case of an 3076 * active update, the specified target is currently talking to us on 3077 * the bus, so the transfer parameter update must take effect 3078 * immediately. 3079 */ 3080void 3081ahd_set_syncrate(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3082 u_int period, u_int offset, u_int ppr_options, 3083 u_int type, int paused) 3084{ 3085 struct ahd_initiator_tinfo *tinfo; 3086 struct ahd_tmode_tstate *tstate; 3087 u_int old_period; 3088 u_int old_offset; 3089 u_int old_ppr; 3090 int active; 3091 int update_needed; 3092 3093 active = (type & AHD_TRANS_ACTIVE) == AHD_TRANS_ACTIVE; 3094 update_needed = 0; 3095 3096 if (period == 0 || offset == 0) { 3097 period = 0; 3098 offset = 0; 3099 } 3100 3101 tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, 3102 devinfo->target, &tstate); 3103 3104 if ((type & AHD_TRANS_USER) != 0) { 3105 tinfo->user.period = period; 3106 tinfo->user.offset = offset; 3107 tinfo->user.ppr_options = ppr_options; 3108 } 3109 3110 if ((type & AHD_TRANS_GOAL) != 0) { 3111 tinfo->goal.period = period; 3112 tinfo->goal.offset = offset; 3113 tinfo->goal.ppr_options = ppr_options; 3114 } 3115 3116 old_period = tinfo->curr.period; 3117 old_offset = tinfo->curr.offset; 3118 old_ppr = tinfo->curr.ppr_options; 3119 3120 if ((type & AHD_TRANS_CUR) != 0 3121 && (old_period != period 3122 || old_offset != offset 3123 || old_ppr != ppr_options)) { 3124 3125 update_needed++; 3126 3127 tinfo->curr.period = period; 3128 tinfo->curr.offset = offset; 3129 tinfo->curr.ppr_options = ppr_options; 3130 3131 ahd_send_async(ahd, devinfo->channel, devinfo->target, 3132 CAM_LUN_WILDCARD, AC_TRANSFER_NEG, NULL); 3133 if (bootverbose) { 3134 if (offset != 0) { 3135 int options; 3136 3137 printf("%s: target %d synchronous with " 3138 "period = 0x%x, offset = 0x%x", 3139 ahd_name(ahd), devinfo->target, 3140 period, offset); 3141 options = 0; 3142 if ((ppr_options & MSG_EXT_PPR_RD_STRM) != 0) { 3143 printf("(RDSTRM"); 3144 options++; 3145 } 3146 if ((ppr_options & MSG_EXT_PPR_DT_REQ) != 0) { 3147 printf("%s", options ? "|DT" : "(DT"); 3148 options++; 3149 } 3150 if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 3151 printf("%s", options ? "|IU" : "(IU"); 3152 options++; 3153 } 3154 if ((ppr_options & MSG_EXT_PPR_RTI) != 0) { 3155 printf("%s", options ? "|RTI" : "(RTI"); 3156 options++; 3157 } 3158 if ((ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) { 3159 printf("%s", options ? "|QAS" : "(QAS"); 3160 options++; 3161 } 3162 if (options != 0) 3163 printf(")\n"); 3164 else 3165 printf("\n"); 3166 } else { 3167 printf("%s: target %d using " 3168 "asynchronous transfers%s\n", 3169 ahd_name(ahd), devinfo->target, 3170 (ppr_options & MSG_EXT_PPR_QAS_REQ) != 0 3171 ? "(QAS)" : ""); 3172 } 3173 } 3174 } 3175 /* 3176 * Always refresh the neg-table to handle the case of the 3177 * sequencer setting the ENATNO bit for a MK_MESSAGE request. 3178 * We will always renegotiate in that case if this is a 3179 * packetized request. Also manage the busfree expected flag 3180 * from this common routine so that we catch changes due to 3181 * WDTR or SDTR messages. 3182 */ 3183 if ((type & AHD_TRANS_CUR) != 0) { 3184 if (!paused) 3185 ahd_pause(ahd); 3186 ahd_update_neg_table(ahd, devinfo, &tinfo->curr); 3187 if (!paused) 3188 ahd_unpause(ahd); 3189 if (ahd->msg_type != MSG_TYPE_NONE) { 3190 if ((old_ppr & MSG_EXT_PPR_IU_REQ) 3191 != (ppr_options & MSG_EXT_PPR_IU_REQ)) { 3192#ifdef AHD_DEBUG 3193 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { 3194 ahd_print_devinfo(ahd, devinfo); 3195 printf("Expecting IU Change busfree\n"); 3196 } 3197#endif 3198 ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE 3199 | MSG_FLAG_IU_REQ_CHANGED; 3200 } 3201 if ((old_ppr & MSG_EXT_PPR_IU_REQ) != 0) { 3202#ifdef AHD_DEBUG 3203 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 3204 printf("PPR with IU_REQ outstanding\n"); 3205#endif 3206 ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE; 3207 } 3208 } 3209 } 3210 3211 update_needed += ahd_update_neg_request(ahd, devinfo, tstate, 3212 tinfo, AHD_NEG_TO_GOAL); 3213 3214 if (update_needed && active) 3215 ahd_update_pending_scbs(ahd); 3216} 3217 3218/* 3219 * Update the user/goal/curr tables of wide negotiation 3220 * parameters as well as, in the case of a current or active update, 3221 * any data structures on the host controller. In the case of an 3222 * active update, the specified target is currently talking to us on 3223 * the bus, so the transfer parameter update must take effect 3224 * immediately. 3225 */ 3226void 3227ahd_set_width(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3228 u_int width, u_int type, int paused) 3229{ 3230 struct ahd_initiator_tinfo *tinfo; 3231 struct ahd_tmode_tstate *tstate; 3232 u_int oldwidth; 3233 int active; 3234 int update_needed; 3235 3236 active = (type & AHD_TRANS_ACTIVE) == AHD_TRANS_ACTIVE; 3237 update_needed = 0; 3238 tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, 3239 devinfo->target, &tstate); 3240 3241 if ((type & AHD_TRANS_USER) != 0) 3242 tinfo->user.width = width; 3243 3244 if ((type & AHD_TRANS_GOAL) != 0) 3245 tinfo->goal.width = width; 3246 3247 oldwidth = tinfo->curr.width; 3248 if ((type & AHD_TRANS_CUR) != 0 && oldwidth != width) { 3249 3250 update_needed++; 3251 3252 tinfo->curr.width = width; 3253 ahd_send_async(ahd, devinfo->channel, devinfo->target, 3254 CAM_LUN_WILDCARD, AC_TRANSFER_NEG, NULL); 3255 if (bootverbose) { 3256 printf("%s: target %d using %dbit transfers\n", 3257 ahd_name(ahd), devinfo->target, 3258 8 * (0x01 << width)); 3259 } 3260 } 3261 3262 if ((type & AHD_TRANS_CUR) != 0) { 3263 if (!paused) 3264 ahd_pause(ahd); 3265 ahd_update_neg_table(ahd, devinfo, &tinfo->curr); 3266 if (!paused) 3267 ahd_unpause(ahd); 3268 } 3269 3270 update_needed += ahd_update_neg_request(ahd, devinfo, tstate, 3271 tinfo, AHD_NEG_TO_GOAL); 3272 if (update_needed && active) 3273 ahd_update_pending_scbs(ahd); 3274 3275} 3276 3277/* 3278 * Update the current state of tagged queuing for a given target. 3279 */ 3280void 3281ahd_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3282 ahd_queue_alg alg) 3283{ 3284 ahd_platform_set_tags(ahd, devinfo, alg); 3285 ahd_send_async(ahd, devinfo->channel, devinfo->target, 3286 devinfo->lun, AC_TRANSFER_NEG, &alg); 3287} 3288 3289static void 3290ahd_update_neg_table(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3291 struct ahd_transinfo *tinfo) 3292{ 3293 ahd_mode_state saved_modes; 3294 u_int period; 3295 u_int ppr_opts; 3296 u_int con_opts; 3297 u_int offset; 3298 u_int saved_negoaddr; 3299 uint8_t iocell_opts[sizeof(ahd->iocell_opts)]; 3300 3301 saved_modes = ahd_save_modes(ahd); 3302 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 3303 3304 saved_negoaddr = ahd_inb(ahd, NEGOADDR); 3305 ahd_outb(ahd, NEGOADDR, devinfo->target); 3306 period = tinfo->period; 3307 offset = tinfo->offset; 3308 memcpy(iocell_opts, ahd->iocell_opts, sizeof(ahd->iocell_opts)); 3309 ppr_opts = tinfo->ppr_options & (MSG_EXT_PPR_QAS_REQ|MSG_EXT_PPR_DT_REQ 3310 |MSG_EXT_PPR_IU_REQ|MSG_EXT_PPR_RTI); 3311 con_opts = 0; 3312 if (period == 0) 3313 period = AHD_SYNCRATE_ASYNC; 3314 if (period == AHD_SYNCRATE_160) { 3315 3316 if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) { 3317 /* 3318 * When the SPI4 spec was finalized, PACE transfers 3319 * was not made a configurable option in the PPR 3320 * message. Instead it is assumed to be enabled for 3321 * any syncrate faster than 80MHz. Nevertheless, 3322 * Harpoon2A4 allows this to be configurable. 3323 * 3324 * Harpoon2A4 also assumes at most 2 data bytes per 3325 * negotiated REQ/ACK offset. Paced transfers take 3326 * 4, so we must adjust our offset. 3327 */ 3328 ppr_opts |= PPROPT_PACE; 3329 offset *= 2; 3330 3331 /* 3332 * Harpoon2A assumed that there would be a 3333 * fallback rate between 160MHz and 80Mhz, 3334 * so 7 is used as the period factor rather 3335 * than 8 for 160MHz. 3336 */ 3337 period = AHD_SYNCRATE_REVA_160; 3338 } 3339 if ((tinfo->ppr_options & MSG_EXT_PPR_PCOMP_EN) == 0) 3340 iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= 3341 ~AHD_PRECOMP_MASK; 3342 } else { 3343 /* 3344 * Precomp should be disabled for non-paced transfers. 3345 */ 3346 iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_PRECOMP_MASK; 3347 3348 if ((ahd->features & AHD_NEW_IOCELL_OPTS) != 0 3349 && (ppr_opts & MSG_EXT_PPR_DT_REQ) != 0 3350 && (ppr_opts & MSG_EXT_PPR_IU_REQ) == 0) { 3351 /* 3352 * Slow down our CRC interval to be 3353 * compatible with non-packetized 3354 * U160 devices that can't handle a 3355 * CRC at full speed. 3356 */ 3357 con_opts |= ENSLOWCRC; 3358 } 3359 3360 if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) { 3361 /* 3362 * On H2A4, revert to a slower slewrate 3363 * on non-paced transfers. 3364 */ 3365 iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= 3366 ~AHD_SLEWRATE_MASK; 3367 } 3368 } 3369 3370 ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_PRECOMP_SLEW); 3371 ahd_outb(ahd, ANNEXDAT, iocell_opts[AHD_PRECOMP_SLEW_INDEX]); 3372 ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_AMPLITUDE); 3373 ahd_outb(ahd, ANNEXDAT, iocell_opts[AHD_AMPLITUDE_INDEX]); 3374 3375 ahd_outb(ahd, NEGPERIOD, period); 3376 ahd_outb(ahd, NEGPPROPTS, ppr_opts); 3377 ahd_outb(ahd, NEGOFFSET, offset); 3378 3379 if (tinfo->width == MSG_EXT_WDTR_BUS_16_BIT) 3380 con_opts |= WIDEXFER; 3381 3382 /* 3383 * During packetized transfers, the target will 3384 * give us the oportunity to send command packets 3385 * without us asserting attention. 3386 */ 3387 if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) == 0) 3388 con_opts |= ENAUTOATNO; 3389 ahd_outb(ahd, NEGCONOPTS, con_opts); 3390 ahd_outb(ahd, NEGOADDR, saved_negoaddr); 3391 ahd_restore_modes(ahd, saved_modes); 3392} 3393 3394/* 3395 * When the transfer settings for a connection change, setup for 3396 * negotiation in pending SCBs to effect the change as quickly as 3397 * possible. We also cancel any negotiations that are scheduled 3398 * for inflight SCBs that have not been started yet. 3399 */ 3400static void 3401ahd_update_pending_scbs(struct ahd_softc *ahd) 3402{ 3403 struct scb *pending_scb; 3404 int pending_scb_count; 3405 int paused; 3406 u_int saved_scbptr; 3407 ahd_mode_state saved_modes; 3408 3409 /* 3410 * Traverse the pending SCB list and ensure that all of the 3411 * SCBs there have the proper settings. We can only safely 3412 * clear the negotiation required flag (setting requires the 3413 * execution queue to be modified) and this is only possible 3414 * if we are not already attempting to select out for this 3415 * SCB. For this reason, all callers only call this routine 3416 * if we are changing the negotiation settings for the currently 3417 * active transaction on the bus. 3418 */ 3419 pending_scb_count = 0; 3420 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { 3421 struct ahd_devinfo devinfo; 3422 struct ahd_initiator_tinfo *tinfo; 3423 struct ahd_tmode_tstate *tstate; 3424 3425 ahd_scb_devinfo(ahd, &devinfo, pending_scb); 3426 tinfo = ahd_fetch_transinfo(ahd, devinfo.channel, 3427 devinfo.our_scsiid, 3428 devinfo.target, &tstate); 3429 if ((tstate->auto_negotiate & devinfo.target_mask) == 0 3430 && (pending_scb->flags & SCB_AUTO_NEGOTIATE) != 0) { 3431 pending_scb->flags &= ~SCB_AUTO_NEGOTIATE; 3432 pending_scb->hscb->control &= ~MK_MESSAGE; 3433 } 3434 ahd_sync_scb(ahd, pending_scb, 3435 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 3436 pending_scb_count++; 3437 } 3438 3439 if (pending_scb_count == 0) 3440 return; 3441 3442 if (ahd_is_paused(ahd)) { 3443 paused = 1; 3444 } else { 3445 paused = 0; 3446 ahd_pause(ahd); 3447 } 3448 3449 /* 3450 * Force the sequencer to reinitialize the selection for 3451 * the command at the head of the execution queue if it 3452 * has already been setup. The negotiation changes may 3453 * effect whether we select-out with ATN. It is only 3454 * safe to clear ENSELO when the bus is not free and no 3455 * selection is in progres or completed. 3456 */ 3457 saved_modes = ahd_save_modes(ahd); 3458 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 3459 if ((ahd_inb(ahd, SCSISIGI) & BSYI) != 0 3460 && (ahd_inb(ahd, SSTAT0) & (SELDO|SELINGO)) == 0) 3461 ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO); 3462 saved_scbptr = ahd_get_scbptr(ahd); 3463 /* Ensure that the hscbs down on the card match the new information */ 3464 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { 3465 u_int scb_tag; 3466 u_int control; 3467 3468 scb_tag = SCB_GET_TAG(pending_scb); 3469 ahd_set_scbptr(ahd, scb_tag); 3470 control = ahd_inb_scbram(ahd, SCB_CONTROL); 3471 control &= ~MK_MESSAGE; 3472 control |= pending_scb->hscb->control & MK_MESSAGE; 3473 ahd_outb(ahd, SCB_CONTROL, control); 3474 } 3475 ahd_set_scbptr(ahd, saved_scbptr); 3476 ahd_restore_modes(ahd, saved_modes); 3477 3478 if (paused == 0) 3479 ahd_unpause(ahd); 3480} 3481 3482/**************************** Pathing Information *****************************/ 3483static void 3484ahd_fetch_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 3485{ 3486 ahd_mode_state saved_modes; 3487 u_int saved_scsiid; 3488 role_t role; 3489 int our_id; 3490 3491 saved_modes = ahd_save_modes(ahd); 3492 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 3493 3494 if (ahd_inb(ahd, SSTAT0) & TARGET) 3495 role = ROLE_TARGET; 3496 else 3497 role = ROLE_INITIATOR; 3498 3499 if (role == ROLE_TARGET 3500 && (ahd_inb(ahd, SEQ_FLAGS) & CMDPHASE_PENDING) != 0) { 3501 /* We were selected, so pull our id from TARGIDIN */ 3502 our_id = ahd_inb(ahd, TARGIDIN) & OID; 3503 } else if (role == ROLE_TARGET) 3504 our_id = ahd_inb(ahd, TOWNID); 3505 else 3506 our_id = ahd_inb(ahd, IOWNID); 3507 3508 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); 3509 ahd_compile_devinfo(devinfo, 3510 our_id, 3511 SCSIID_TARGET(ahd, saved_scsiid), 3512 ahd_inb(ahd, SAVED_LUN), 3513 SCSIID_CHANNEL(ahd, saved_scsiid), 3514 role); 3515 ahd_restore_modes(ahd, saved_modes); 3516} 3517 3518void 3519ahd_print_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 3520{ 3521 printf("%s:%c:%d:%d: ", ahd_name(ahd), 'A', 3522 devinfo->target, devinfo->lun); 3523} 3524 3525struct ahd_phase_table_entry* 3526ahd_lookup_phase_entry(int phase) 3527{ 3528 struct ahd_phase_table_entry *entry; 3529 struct ahd_phase_table_entry *last_entry; 3530 3531 /* 3532 * num_phases doesn't include the default entry which 3533 * will be returned if the phase doesn't match. 3534 */ 3535 last_entry = &ahd_phase_table[num_phases]; 3536 for (entry = ahd_phase_table; entry < last_entry; entry++) { 3537 if (phase == entry->phase) 3538 break; 3539 } 3540 return (entry); 3541} 3542 3543void 3544ahd_compile_devinfo(struct ahd_devinfo *devinfo, u_int our_id, u_int target, 3545 u_int lun, char channel, role_t role) 3546{ 3547 devinfo->our_scsiid = our_id; 3548 devinfo->target = target; 3549 devinfo->lun = lun; 3550 devinfo->target_offset = target; 3551 devinfo->channel = channel; 3552 devinfo->role = role; 3553 if (channel == 'B') 3554 devinfo->target_offset += 8; 3555 devinfo->target_mask = (0x01 << devinfo->target_offset); 3556} 3557 3558static void 3559ahd_scb_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3560 struct scb *scb) 3561{ 3562 role_t role; 3563 int our_id; 3564 3565 our_id = SCSIID_OUR_ID(scb->hscb->scsiid); 3566 role = ROLE_INITIATOR; 3567 if ((scb->hscb->control & TARGET_SCB) != 0) 3568 role = ROLE_TARGET; 3569 ahd_compile_devinfo(devinfo, our_id, SCB_GET_TARGET(ahd, scb), 3570 SCB_GET_LUN(scb), SCB_GET_CHANNEL(ahd, scb), role); 3571} 3572 3573 3574/************************ Message Phase Processing ****************************/ 3575/* 3576 * When an initiator transaction with the MK_MESSAGE flag either reconnects 3577 * or enters the initial message out phase, we are interrupted. Fill our 3578 * outgoing message buffer with the appropriate message and beging handing 3579 * the message phase(s) manually. 3580 */ 3581static void 3582ahd_setup_initiator_msgout(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3583 struct scb *scb) 3584{ 3585 /* 3586 * To facilitate adding multiple messages together, 3587 * each routine should increment the index and len 3588 * variables instead of setting them explicitly. 3589 */ 3590 ahd->msgout_index = 0; 3591 ahd->msgout_len = 0; 3592 3593 if (ahd_currently_packetized(ahd)) 3594 ahd->msg_flags |= MSG_FLAG_PACKETIZED; 3595 3596 if (ahd->send_msg_perror 3597 && ahd_inb(ahd, MSG_OUT) == HOST_MSG) { 3598 ahd->msgout_buf[ahd->msgout_index++] = ahd->send_msg_perror; 3599 ahd->msgout_len++; 3600 ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; 3601#ifdef AHD_DEBUG 3602 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 3603 printf("Setting up for Parity Error delivery\n"); 3604#endif 3605 return; 3606 } else if (scb == NULL) { 3607 printf("%s: WARNING. No pending message for " 3608 "I_T msgin. Issuing NO-OP\n", ahd_name(ahd)); 3609 AHD_CORRECTABLE_ERROR(ahd); 3610 ahd->msgout_buf[ahd->msgout_index++] = MSG_NOOP; 3611 ahd->msgout_len++; 3612 ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; 3613 return; 3614 } 3615 3616 if ((scb->flags & SCB_DEVICE_RESET) == 0 3617 && (scb->flags & SCB_PACKETIZED) == 0 3618 && ahd_inb(ahd, MSG_OUT) == MSG_IDENTIFYFLAG) { 3619 u_int identify_msg; 3620 3621 identify_msg = MSG_IDENTIFYFLAG | SCB_GET_LUN(scb); 3622 if ((scb->hscb->control & DISCENB) != 0) 3623 identify_msg |= MSG_IDENTIFY_DISCFLAG; 3624 ahd->msgout_buf[ahd->msgout_index++] = identify_msg; 3625 ahd->msgout_len++; 3626 3627 if ((scb->hscb->control & TAG_ENB) != 0) { 3628 ahd->msgout_buf[ahd->msgout_index++] = 3629 scb->hscb->control & (TAG_ENB|SCB_TAG_TYPE); 3630 ahd->msgout_buf[ahd->msgout_index++] = SCB_GET_TAG(scb); 3631 ahd->msgout_len += 2; 3632 } 3633 } 3634 3635 if (scb->flags & SCB_DEVICE_RESET) { 3636 ahd->msgout_buf[ahd->msgout_index++] = MSG_BUS_DEV_RESET; 3637 ahd->msgout_len++; 3638 ahd_print_path(ahd, scb); 3639 printf("Bus Device Reset Message Sent\n"); 3640 AHD_CORRECTABLE_ERROR(ahd); 3641 /* 3642 * Clear our selection hardware in advance of 3643 * the busfree. We may have an entry in the waiting 3644 * Q for this target, and we don't want to go about 3645 * selecting while we handle the busfree and blow it 3646 * away. 3647 */ 3648 ahd_outb(ahd, SCSISEQ0, 0); 3649 } else if ((scb->flags & SCB_ABORT) != 0) { 3650 3651 if ((scb->hscb->control & TAG_ENB) != 0) { 3652 ahd->msgout_buf[ahd->msgout_index++] = MSG_ABORT_TAG; 3653 } else { 3654 ahd->msgout_buf[ahd->msgout_index++] = MSG_ABORT; 3655 } 3656 ahd->msgout_len++; 3657 ahd_print_path(ahd, scb); 3658 printf("Abort%s Message Sent\n", 3659 (scb->hscb->control & TAG_ENB) != 0 ? " Tag" : ""); 3660 AHD_CORRECTABLE_ERROR(ahd); 3661 /* 3662 * Clear our selection hardware in advance of 3663 * the busfree. We may have an entry in the waiting 3664 * Q for this target, and we don't want to go about 3665 * selecting while we handle the busfree and blow it 3666 * away. 3667 */ 3668 ahd_outb(ahd, SCSISEQ0, 0); 3669 } else if ((scb->flags & (SCB_AUTO_NEGOTIATE|SCB_NEGOTIATE)) != 0) { 3670 ahd_build_transfer_msg(ahd, devinfo); 3671 /* 3672 * Clear our selection hardware in advance of potential 3673 * PPR IU status change busfree. We may have an entry in 3674 * the waiting Q for this target, and we don't want to go 3675 * about selecting while we handle the busfree and blow 3676 * it away. 3677 */ 3678 ahd_outb(ahd, SCSISEQ0, 0); 3679 } else { 3680 printf("ahd_intr: AWAITING_MSG for an SCB that " 3681 "does not have a waiting message\n"); 3682 printf("SCSIID = %x, target_mask = %x\n", scb->hscb->scsiid, 3683 devinfo->target_mask); 3684 AHD_FATAL_ERROR(ahd); 3685 panic("SCB = %d, SCB Control = %x:%x, MSG_OUT = %x " 3686 "SCB flags = %x", SCB_GET_TAG(scb), scb->hscb->control, 3687 ahd_inb_scbram(ahd, SCB_CONTROL), ahd_inb(ahd, MSG_OUT), 3688 scb->flags); 3689 } 3690 3691 /* 3692 * Clear the MK_MESSAGE flag from the SCB so we aren't 3693 * asked to send this message again. 3694 */ 3695 ahd_outb(ahd, SCB_CONTROL, 3696 ahd_inb_scbram(ahd, SCB_CONTROL) & ~MK_MESSAGE); 3697 scb->hscb->control &= ~MK_MESSAGE; 3698 ahd->msgout_index = 0; 3699 ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; 3700} 3701 3702/* 3703 * Build an appropriate transfer negotiation message for the 3704 * currently active target. 3705 */ 3706static void 3707ahd_build_transfer_msg(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 3708{ 3709 /* 3710 * We need to initiate transfer negotiations. 3711 * If our current and goal settings are identical, 3712 * we want to renegotiate due to a check condition. 3713 */ 3714 struct ahd_initiator_tinfo *tinfo; 3715 struct ahd_tmode_tstate *tstate; 3716 int dowide; 3717 int dosync; 3718 int doppr; 3719 u_int period; 3720 u_int ppr_options; 3721 u_int offset; 3722 3723 tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, 3724 devinfo->target, &tstate); 3725 /* 3726 * Filter our period based on the current connection. 3727 * If we can't perform DT transfers on this segment (not in LVD 3728 * mode for instance), then our decision to issue a PPR message 3729 * may change. 3730 */ 3731 period = tinfo->goal.period; 3732 offset = tinfo->goal.offset; 3733 ppr_options = tinfo->goal.ppr_options; 3734 /* Target initiated PPR is not allowed in the SCSI spec */ 3735 if (devinfo->role == ROLE_TARGET) 3736 ppr_options = 0; 3737 ahd_devlimited_syncrate(ahd, tinfo, &period, 3738 &ppr_options, devinfo->role); 3739 dowide = tinfo->curr.width != tinfo->goal.width; 3740 dosync = tinfo->curr.offset != offset || tinfo->curr.period != period; 3741 /* 3742 * Only use PPR if we have options that need it, even if the device 3743 * claims to support it. There might be an expander in the way 3744 * that doesn't. 3745 */ 3746 doppr = ppr_options != 0; 3747 3748 if (!dowide && !dosync && !doppr) { 3749 dowide = tinfo->goal.width != MSG_EXT_WDTR_BUS_8_BIT; 3750 dosync = tinfo->goal.offset != 0; 3751 } 3752 3753 if (!dowide && !dosync && !doppr) { 3754 /* 3755 * Force async with a WDTR message if we have a wide bus, 3756 * or just issue an SDTR with a 0 offset. 3757 */ 3758 if ((ahd->features & AHD_WIDE) != 0) 3759 dowide = 1; 3760 else 3761 dosync = 1; 3762 3763 if (bootverbose) { 3764 ahd_print_devinfo(ahd, devinfo); 3765 printf("Ensuring async\n"); 3766 } 3767 } 3768 /* Target initiated PPR is not allowed in the SCSI spec */ 3769 if (devinfo->role == ROLE_TARGET) 3770 doppr = 0; 3771 3772 /* 3773 * Both the PPR message and SDTR message require the 3774 * goal syncrate to be limited to what the target device 3775 * is capable of handling (based on whether an LVD->SE 3776 * expander is on the bus), so combine these two cases. 3777 * Regardless, guarantee that if we are using WDTR and SDTR 3778 * messages that WDTR comes first. 3779 */ 3780 if (doppr || (dosync && !dowide)) { 3781 3782 offset = tinfo->goal.offset; 3783 ahd_validate_offset(ahd, tinfo, period, &offset, 3784 doppr ? tinfo->goal.width 3785 : tinfo->curr.width, 3786 devinfo->role); 3787 if (doppr) { 3788 ahd_construct_ppr(ahd, devinfo, period, offset, 3789 tinfo->goal.width, ppr_options); 3790 } else { 3791 ahd_construct_sdtr(ahd, devinfo, period, offset); 3792 } 3793 } else { 3794 ahd_construct_wdtr(ahd, devinfo, tinfo->goal.width); 3795 } 3796} 3797 3798/* 3799 * Build a synchronous negotiation message in our message 3800 * buffer based on the input parameters. 3801 */ 3802static void 3803ahd_construct_sdtr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3804 u_int period, u_int offset) 3805{ 3806 if (offset == 0) 3807 period = AHD_ASYNC_XFER_PERIOD; 3808 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXTENDED; 3809 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_SDTR_LEN; 3810 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_SDTR; 3811 ahd->msgout_buf[ahd->msgout_index++] = period; 3812 ahd->msgout_buf[ahd->msgout_index++] = offset; 3813 ahd->msgout_len += 5; 3814 if (bootverbose) { 3815 printf("(%s:%c:%d:%d): Sending SDTR period %x, offset %x\n", 3816 ahd_name(ahd), devinfo->channel, devinfo->target, 3817 devinfo->lun, period, offset); 3818 } 3819} 3820 3821/* 3822 * Build a wide negotiateion message in our message 3823 * buffer based on the input parameters. 3824 */ 3825static void 3826ahd_construct_wdtr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3827 u_int bus_width) 3828{ 3829 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXTENDED; 3830 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_WDTR_LEN; 3831 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_WDTR; 3832 ahd->msgout_buf[ahd->msgout_index++] = bus_width; 3833 ahd->msgout_len += 4; 3834 if (bootverbose) { 3835 printf("(%s:%c:%d:%d): Sending WDTR %x\n", 3836 ahd_name(ahd), devinfo->channel, devinfo->target, 3837 devinfo->lun, bus_width); 3838 } 3839} 3840 3841/* 3842 * Build a parallel protocol request message in our message 3843 * buffer based on the input parameters. 3844 */ 3845static void 3846ahd_construct_ppr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 3847 u_int period, u_int offset, u_int bus_width, 3848 u_int ppr_options) 3849{ 3850 /* 3851 * Always request precompensation from 3852 * the other target if we are running 3853 * at paced syncrates. 3854 */ 3855 if (period <= AHD_SYNCRATE_PACED) 3856 ppr_options |= MSG_EXT_PPR_PCOMP_EN; 3857 if (offset == 0) 3858 period = AHD_ASYNC_XFER_PERIOD; 3859 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXTENDED; 3860 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_PPR_LEN; 3861 ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_PPR; 3862 ahd->msgout_buf[ahd->msgout_index++] = period; 3863 ahd->msgout_buf[ahd->msgout_index++] = 0; 3864 ahd->msgout_buf[ahd->msgout_index++] = offset; 3865 ahd->msgout_buf[ahd->msgout_index++] = bus_width; 3866 ahd->msgout_buf[ahd->msgout_index++] = ppr_options; 3867 ahd->msgout_len += 8; 3868 if (bootverbose) { 3869 printf("(%s:%c:%d:%d): Sending PPR bus_width %x, period %x, " 3870 "offset %x, ppr_options %x\n", ahd_name(ahd), 3871 devinfo->channel, devinfo->target, devinfo->lun, 3872 bus_width, period, offset, ppr_options); 3873 } 3874} 3875 3876/* 3877 * Clear any active message state. 3878 */ 3879static void 3880ahd_clear_msg_state(struct ahd_softc *ahd) 3881{ 3882 ahd_mode_state saved_modes; 3883 3884 saved_modes = ahd_save_modes(ahd); 3885 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 3886 ahd->send_msg_perror = 0; 3887 ahd->msg_flags = MSG_FLAG_NONE; 3888 ahd->msgout_len = 0; 3889 ahd->msgin_index = 0; 3890 ahd->msg_type = MSG_TYPE_NONE; 3891 if ((ahd_inb(ahd, SCSISIGO) & ATNO) != 0) { 3892 /* 3893 * The target didn't care to respond to our 3894 * message request, so clear ATN. 3895 */ 3896 ahd_outb(ahd, CLRSINT1, CLRATNO); 3897 } 3898 ahd_outb(ahd, MSG_OUT, MSG_NOOP); 3899 ahd_outb(ahd, SEQ_FLAGS2, 3900 ahd_inb(ahd, SEQ_FLAGS2) & ~TARGET_MSG_PENDING); 3901 ahd_restore_modes(ahd, saved_modes); 3902} 3903 3904/* 3905 * Manual message loop handler. 3906 */ 3907static void 3908ahd_handle_message_phase(struct ahd_softc *ahd) 3909{ 3910 struct ahd_devinfo devinfo; 3911 u_int bus_phase; 3912 int end_session; 3913 3914 ahd_fetch_devinfo(ahd, &devinfo); 3915 end_session = FALSE; 3916 bus_phase = ahd_inb(ahd, LASTPHASE); 3917 3918 if ((ahd_inb(ahd, LQISTAT2) & LQIPHASE_OUTPKT) != 0) { 3919 printf("LQIRETRY for LQIPHASE_OUTPKT\n"); 3920 ahd_outb(ahd, LQCTL2, LQIRETRY); 3921 } 3922reswitch: 3923 switch (ahd->msg_type) { 3924 case MSG_TYPE_INITIATOR_MSGOUT: 3925 { 3926 int lastbyte; 3927 int phasemis; 3928 int msgdone; 3929 3930 if (ahd->msgout_len == 0 && ahd->send_msg_perror == 0) 3931 panic("HOST_MSG_LOOP interrupt with no active message"); 3932 3933#ifdef AHD_DEBUG 3934 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { 3935 ahd_print_devinfo(ahd, &devinfo); 3936 printf("INITIATOR_MSG_OUT"); 3937 } 3938#endif 3939 phasemis = bus_phase != P_MESGOUT; 3940 if (phasemis) { 3941#ifdef AHD_DEBUG 3942 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { 3943 printf(" PHASEMIS %s\n", 3944 ahd_lookup_phase_entry(bus_phase) 3945 ->phasemsg); 3946 } 3947#endif 3948 if (bus_phase == P_MESGIN) { 3949 /* 3950 * Change gears and see if 3951 * this messages is of interest to 3952 * us or should be passed back to 3953 * the sequencer. 3954 */ 3955 ahd_outb(ahd, CLRSINT1, CLRATNO); 3956 ahd->send_msg_perror = 0; 3957 ahd->msg_type = MSG_TYPE_INITIATOR_MSGIN; 3958 ahd->msgin_index = 0; 3959 goto reswitch; 3960 } 3961 end_session = TRUE; 3962 break; 3963 } 3964 3965 if (ahd->send_msg_perror) { 3966 ahd_outb(ahd, CLRSINT1, CLRATNO); 3967 ahd_outb(ahd, CLRSINT1, CLRREQINIT); 3968#ifdef AHD_DEBUG 3969 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 3970 printf(" byte 0x%x\n", ahd->send_msg_perror); 3971#endif 3972 /* 3973 * If we are notifying the target of a CRC error 3974 * during packetized operations, the target is 3975 * within its rights to acknowledge our message 3976 * with a busfree. 3977 */ 3978 if ((ahd->msg_flags & MSG_FLAG_PACKETIZED) != 0 3979 && ahd->send_msg_perror == MSG_INITIATOR_DET_ERR) 3980 ahd->msg_flags |= MSG_FLAG_EXPECT_IDE_BUSFREE; 3981 3982 ahd_outb(ahd, RETURN_2, ahd->send_msg_perror); 3983 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_WRITE); 3984 break; 3985 } 3986 3987 msgdone = ahd->msgout_index == ahd->msgout_len; 3988 if (msgdone) { 3989 /* 3990 * The target has requested a retry. 3991 * Re-assert ATN, reset our message index to 3992 * 0, and try again. 3993 */ 3994 ahd->msgout_index = 0; 3995 ahd_assert_atn(ahd); 3996 } 3997 3998 lastbyte = ahd->msgout_index == (ahd->msgout_len - 1); 3999 if (lastbyte) { 4000 /* Last byte is signified by dropping ATN */ 4001 ahd_outb(ahd, CLRSINT1, CLRATNO); 4002 } 4003 4004 /* 4005 * Clear our interrupt status and present 4006 * the next byte on the bus. 4007 */ 4008 ahd_outb(ahd, CLRSINT1, CLRREQINIT); 4009#ifdef AHD_DEBUG 4010 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 4011 printf(" byte 0x%x\n", 4012 ahd->msgout_buf[ahd->msgout_index]); 4013#endif 4014 ahd_outb(ahd, RETURN_2, ahd->msgout_buf[ahd->msgout_index++]); 4015 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_WRITE); 4016 break; 4017 } 4018 case MSG_TYPE_INITIATOR_MSGIN: 4019 { 4020 int phasemis; 4021 int message_done; 4022 4023#ifdef AHD_DEBUG 4024 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { 4025 ahd_print_devinfo(ahd, &devinfo); 4026 printf("INITIATOR_MSG_IN"); 4027 } 4028#endif 4029 phasemis = bus_phase != P_MESGIN; 4030 if (phasemis) { 4031#ifdef AHD_DEBUG 4032 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { 4033 printf(" PHASEMIS %s\n", 4034 ahd_lookup_phase_entry(bus_phase) 4035 ->phasemsg); 4036 } 4037#endif 4038 ahd->msgin_index = 0; 4039 if (bus_phase == P_MESGOUT 4040 && (ahd->send_msg_perror != 0 4041 || (ahd->msgout_len != 0 4042 && ahd->msgout_index == 0))) { 4043 ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; 4044 goto reswitch; 4045 } 4046 end_session = TRUE; 4047 break; 4048 } 4049 4050 /* Pull the byte in without acking it */ 4051 ahd->msgin_buf[ahd->msgin_index] = ahd_inb(ahd, SCSIBUS); 4052#ifdef AHD_DEBUG 4053 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 4054 printf(" byte 0x%x\n", 4055 ahd->msgin_buf[ahd->msgin_index]); 4056#endif 4057 4058 message_done = ahd_parse_msg(ahd, &devinfo); 4059 4060 if (message_done) { 4061 /* 4062 * Clear our incoming message buffer in case there 4063 * is another message following this one. 4064 */ 4065 ahd->msgin_index = 0; 4066 4067 /* 4068 * If this message illicited a response, 4069 * assert ATN so the target takes us to the 4070 * message out phase. 4071 */ 4072 if (ahd->msgout_len != 0) { 4073#ifdef AHD_DEBUG 4074 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { 4075 ahd_print_devinfo(ahd, &devinfo); 4076 printf("Asserting ATN for response\n"); 4077 } 4078#endif 4079 ahd_assert_atn(ahd); 4080 } 4081 } else 4082 ahd->msgin_index++; 4083 4084 if (message_done == MSGLOOP_TERMINATED) { 4085 end_session = TRUE; 4086 } else { 4087 /* Ack the byte */ 4088 ahd_outb(ahd, CLRSINT1, CLRREQINIT); 4089 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_READ); 4090 } 4091 break; 4092 } 4093 case MSG_TYPE_TARGET_MSGIN: 4094 { 4095 int msgdone; 4096 int msgout_request; 4097 4098 /* 4099 * By default, the message loop will continue. 4100 */ 4101 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG); 4102 4103 if (ahd->msgout_len == 0) 4104 panic("Target MSGIN with no active message"); 4105 4106 /* 4107 * If we interrupted a mesgout session, the initiator 4108 * will not know this until our first REQ. So, we 4109 * only honor mesgout requests after we've sent our 4110 * first byte. 4111 */ 4112 if ((ahd_inb(ahd, SCSISIGI) & ATNI) != 0 4113 && ahd->msgout_index > 0) 4114 msgout_request = TRUE; 4115 else 4116 msgout_request = FALSE; 4117 4118 if (msgout_request) { 4119 4120 /* 4121 * Change gears and see if 4122 * this messages is of interest to 4123 * us or should be passed back to 4124 * the sequencer. 4125 */ 4126 ahd->msg_type = MSG_TYPE_TARGET_MSGOUT; 4127 ahd_outb(ahd, SCSISIGO, P_MESGOUT | BSYO); 4128 ahd->msgin_index = 0; 4129 /* Dummy read to REQ for first byte */ 4130 ahd_inb(ahd, SCSIDAT); 4131 ahd_outb(ahd, SXFRCTL0, 4132 ahd_inb(ahd, SXFRCTL0) | SPIOEN); 4133 break; 4134 } 4135 4136 msgdone = ahd->msgout_index == ahd->msgout_len; 4137 if (msgdone) { 4138 ahd_outb(ahd, SXFRCTL0, 4139 ahd_inb(ahd, SXFRCTL0) & ~SPIOEN); 4140 end_session = TRUE; 4141 break; 4142 } 4143 4144 /* 4145 * Present the next byte on the bus. 4146 */ 4147 ahd_outb(ahd, SXFRCTL0, ahd_inb(ahd, SXFRCTL0) | SPIOEN); 4148 ahd_outb(ahd, SCSIDAT, ahd->msgout_buf[ahd->msgout_index++]); 4149 break; 4150 } 4151 case MSG_TYPE_TARGET_MSGOUT: 4152 { 4153 int lastbyte; 4154 int msgdone; 4155 4156 /* 4157 * By default, the message loop will continue. 4158 */ 4159 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG); 4160 4161 /* 4162 * The initiator signals that this is 4163 * the last byte by dropping ATN. 4164 */ 4165 lastbyte = (ahd_inb(ahd, SCSISIGI) & ATNI) == 0; 4166 4167 /* 4168 * Read the latched byte, but turn off SPIOEN first 4169 * so that we don't inadvertently cause a REQ for the 4170 * next byte. 4171 */ 4172 ahd_outb(ahd, SXFRCTL0, ahd_inb(ahd, SXFRCTL0) & ~SPIOEN); 4173 ahd->msgin_buf[ahd->msgin_index] = ahd_inb(ahd, SCSIDAT); 4174 msgdone = ahd_parse_msg(ahd, &devinfo); 4175 if (msgdone == MSGLOOP_TERMINATED) { 4176 /* 4177 * The message is *really* done in that it caused 4178 * us to go to bus free. The sequencer has already 4179 * been reset at this point, so pull the ejection 4180 * handle. 4181 */ 4182 return; 4183 } 4184 4185 ahd->msgin_index++; 4186 4187 /* 4188 * XXX Read spec about initiator dropping ATN too soon 4189 * and use msgdone to detect it. 4190 */ 4191 if (msgdone == MSGLOOP_MSGCOMPLETE) { 4192 ahd->msgin_index = 0; 4193 4194 /* 4195 * If this message illicited a response, transition 4196 * to the Message in phase and send it. 4197 */ 4198 if (ahd->msgout_len != 0) { 4199 ahd_outb(ahd, SCSISIGO, P_MESGIN | BSYO); 4200 ahd_outb(ahd, SXFRCTL0, 4201 ahd_inb(ahd, SXFRCTL0) | SPIOEN); 4202 ahd->msg_type = MSG_TYPE_TARGET_MSGIN; 4203 ahd->msgin_index = 0; 4204 break; 4205 } 4206 } 4207 4208 if (lastbyte) 4209 end_session = TRUE; 4210 else { 4211 /* Ask for the next byte. */ 4212 ahd_outb(ahd, SXFRCTL0, 4213 ahd_inb(ahd, SXFRCTL0) | SPIOEN); 4214 } 4215 4216 break; 4217 } 4218 default: 4219 panic("Unknown REQINIT message type"); 4220 } 4221 4222 if (end_session) { 4223 if ((ahd->msg_flags & MSG_FLAG_PACKETIZED) != 0) { 4224 printf("%s: Returning to Idle Loop\n", 4225 ahd_name(ahd)); 4226 ahd_clear_msg_state(ahd); 4227 4228 /* 4229 * Perform the equivalent of a clear_target_state. 4230 */ 4231 ahd_outb(ahd, LASTPHASE, P_BUSFREE); 4232 ahd_outb(ahd, SEQ_FLAGS, NOT_IDENTIFIED|NO_CDB_SENT); 4233 ahd_outb(ahd, SEQCTL0, FASTMODE|SEQRESET); 4234 } else { 4235 ahd_clear_msg_state(ahd); 4236 ahd_outb(ahd, RETURN_1, EXIT_MSG_LOOP); 4237 } 4238 } 4239} 4240 4241/* 4242 * See if we sent a particular extended message to the target. 4243 * If "full" is true, return true only if the target saw the full 4244 * message. If "full" is false, return true if the target saw at 4245 * least the first byte of the message. 4246 */ 4247static int 4248ahd_sent_msg(struct ahd_softc *ahd, ahd_msgtype type, u_int msgval, int full) 4249{ 4250 int found; 4251 u_int index; 4252 4253 found = FALSE; 4254 index = 0; 4255 4256 while (index < ahd->msgout_len) { 4257 if (ahd->msgout_buf[index] == MSG_EXTENDED) { 4258 u_int end_index; 4259 4260 end_index = index + 1 + ahd->msgout_buf[index + 1]; 4261 if (ahd->msgout_buf[index+2] == msgval 4262 && type == AHDMSG_EXT) { 4263 4264 if (full) { 4265 if (ahd->msgout_index > end_index) 4266 found = TRUE; 4267 } else if (ahd->msgout_index > index) 4268 found = TRUE; 4269 } 4270 index = end_index; 4271 } else if (ahd->msgout_buf[index] >= MSG_SIMPLE_TASK 4272 && ahd->msgout_buf[index] <= MSG_IGN_WIDE_RESIDUE) { 4273 4274 /* Skip tag type and tag id or residue param*/ 4275 index += 2; 4276 } else { 4277 /* Single byte message */ 4278 if (type == AHDMSG_1B 4279 && ahd->msgout_index > index 4280 && (ahd->msgout_buf[index] == msgval 4281 || ((ahd->msgout_buf[index] & MSG_IDENTIFYFLAG) != 0 4282 && msgval == MSG_IDENTIFYFLAG))) 4283 found = TRUE; 4284 index++; 4285 } 4286 4287 if (found) 4288 break; 4289 } 4290 return (found); 4291} 4292 4293/* 4294 * Wait for a complete incoming message, parse it, and respond accordingly. 4295 */ 4296static int 4297ahd_parse_msg(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 4298{ 4299 struct ahd_initiator_tinfo *tinfo; 4300 struct ahd_tmode_tstate *tstate; 4301 int reject; 4302 int done; 4303 int response; 4304 4305 done = MSGLOOP_IN_PROG; 4306 response = FALSE; 4307 reject = FALSE; 4308 tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, 4309 devinfo->target, &tstate); 4310 4311 /* 4312 * Parse as much of the message as is available, 4313 * rejecting it if we don't support it. When 4314 * the entire message is available and has been 4315 * handled, return MSGLOOP_MSGCOMPLETE, indicating 4316 * that we have parsed an entire message. 4317 * 4318 * In the case of extended messages, we accept the length 4319 * byte outright and perform more checking once we know the 4320 * extended message type. 4321 */ 4322 switch (ahd->msgin_buf[0]) { 4323 case MSG_DISCONNECT: 4324 case MSG_SAVEDATAPOINTER: 4325 case MSG_CMDCOMPLETE: 4326 case MSG_RESTOREPOINTERS: 4327 case MSG_IGN_WIDE_RESIDUE: 4328 /* 4329 * End our message loop as these are messages 4330 * the sequencer handles on its own. 4331 */ 4332 done = MSGLOOP_TERMINATED; 4333 break; 4334 case MSG_MESSAGE_REJECT: 4335 response = ahd_handle_msg_reject(ahd, devinfo); 4336 /* FALLTHROUGH */ 4337 case MSG_NOOP: 4338 done = MSGLOOP_MSGCOMPLETE; 4339 break; 4340 case MSG_EXTENDED: 4341 { 4342 /* Wait for enough of the message to begin validation */ 4343 if (ahd->msgin_index < 2) 4344 break; 4345 switch (ahd->msgin_buf[2]) { 4346 case MSG_EXT_SDTR: 4347 { 4348 u_int period; 4349 u_int ppr_options; 4350 u_int offset; 4351 u_int saved_offset; 4352 4353 if (ahd->msgin_buf[1] != MSG_EXT_SDTR_LEN) { 4354 reject = TRUE; 4355 break; 4356 } 4357 4358 /* 4359 * Wait until we have both args before validating 4360 * and acting on this message. 4361 * 4362 * Add one to MSG_EXT_SDTR_LEN to account for 4363 * the extended message preamble. 4364 */ 4365 if (ahd->msgin_index < (MSG_EXT_SDTR_LEN + 1)) 4366 break; 4367 4368 period = ahd->msgin_buf[3]; 4369 ppr_options = 0; 4370 saved_offset = offset = ahd->msgin_buf[4]; 4371 ahd_devlimited_syncrate(ahd, tinfo, &period, 4372 &ppr_options, devinfo->role); 4373 ahd_validate_offset(ahd, tinfo, period, &offset, 4374 tinfo->curr.width, devinfo->role); 4375 if (bootverbose) { 4376 printf("(%s:%c:%d:%d): Received " 4377 "SDTR period %x, offset %x\n\t" 4378 "Filtered to period %x, offset %x\n", 4379 ahd_name(ahd), devinfo->channel, 4380 devinfo->target, devinfo->lun, 4381 ahd->msgin_buf[3], saved_offset, 4382 period, offset); 4383 } 4384 ahd_set_syncrate(ahd, devinfo, period, 4385 offset, ppr_options, 4386 AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, 4387 /*paused*/TRUE); 4388 4389 /* 4390 * See if we initiated Sync Negotiation 4391 * and didn't have to fall down to async 4392 * transfers. 4393 */ 4394 if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, TRUE)) { 4395 /* We started it */ 4396 if (saved_offset != offset) { 4397 /* Went too low - force async */ 4398 reject = TRUE; 4399 } 4400 } else { 4401 /* 4402 * Send our own SDTR in reply 4403 */ 4404 if (bootverbose 4405 && devinfo->role == ROLE_INITIATOR) { 4406 printf("(%s:%c:%d:%d): Target " 4407 "Initiated SDTR\n", 4408 ahd_name(ahd), devinfo->channel, 4409 devinfo->target, devinfo->lun); 4410 } 4411 ahd->msgout_index = 0; 4412 ahd->msgout_len = 0; 4413 ahd_construct_sdtr(ahd, devinfo, 4414 period, offset); 4415 ahd->msgout_index = 0; 4416 response = TRUE; 4417 } 4418 done = MSGLOOP_MSGCOMPLETE; 4419 break; 4420 } 4421 case MSG_EXT_WDTR: 4422 { 4423 u_int bus_width; 4424 u_int saved_width; 4425 u_int sending_reply; 4426 4427 sending_reply = FALSE; 4428 if (ahd->msgin_buf[1] != MSG_EXT_WDTR_LEN) { 4429 reject = TRUE; 4430 break; 4431 } 4432 4433 /* 4434 * Wait until we have our arg before validating 4435 * and acting on this message. 4436 * 4437 * Add one to MSG_EXT_WDTR_LEN to account for 4438 * the extended message preamble. 4439 */ 4440 if (ahd->msgin_index < (MSG_EXT_WDTR_LEN + 1)) 4441 break; 4442 4443 bus_width = ahd->msgin_buf[3]; 4444 saved_width = bus_width; 4445 ahd_validate_width(ahd, tinfo, &bus_width, 4446 devinfo->role); 4447 if (bootverbose) { 4448 printf("(%s:%c:%d:%d): Received WDTR " 4449 "%x filtered to %x\n", 4450 ahd_name(ahd), devinfo->channel, 4451 devinfo->target, devinfo->lun, 4452 saved_width, bus_width); 4453 } 4454 4455 if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, TRUE)) { 4456 /* 4457 * Don't send a WDTR back to the 4458 * target, since we asked first. 4459 * If the width went higher than our 4460 * request, reject it. 4461 */ 4462 if (saved_width > bus_width) { 4463 reject = TRUE; 4464 printf("(%s:%c:%d:%d): requested %dBit " 4465 "transfers. Rejecting...\n", 4466 ahd_name(ahd), devinfo->channel, 4467 devinfo->target, devinfo->lun, 4468 8 * (0x01 << bus_width)); 4469 bus_width = 0; 4470 } 4471 } else { 4472 /* 4473 * Send our own WDTR in reply 4474 */ 4475 if (bootverbose 4476 && devinfo->role == ROLE_INITIATOR) { 4477 printf("(%s:%c:%d:%d): Target " 4478 "Initiated WDTR\n", 4479 ahd_name(ahd), devinfo->channel, 4480 devinfo->target, devinfo->lun); 4481 } 4482 ahd->msgout_index = 0; 4483 ahd->msgout_len = 0; 4484 ahd_construct_wdtr(ahd, devinfo, bus_width); 4485 ahd->msgout_index = 0; 4486 response = TRUE; 4487 sending_reply = TRUE; 4488 } 4489 /* 4490 * After a wide message, we are async, but 4491 * some devices don't seem to honor this portion 4492 * of the spec. Force a renegotiation of the 4493 * sync component of our transfer agreement even 4494 * if our goal is async. By updating our width 4495 * after forcing the negotiation, we avoid 4496 * renegotiating for width. 4497 */ 4498 ahd_update_neg_request(ahd, devinfo, tstate, 4499 tinfo, AHD_NEG_ALWAYS); 4500 ahd_set_width(ahd, devinfo, bus_width, 4501 AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, 4502 /*paused*/TRUE); 4503 if (sending_reply == FALSE && reject == FALSE) { 4504 4505 /* 4506 * We will always have an SDTR to send. 4507 */ 4508 ahd->msgout_index = 0; 4509 ahd->msgout_len = 0; 4510 ahd_build_transfer_msg(ahd, devinfo); 4511 ahd->msgout_index = 0; 4512 response = TRUE; 4513 } 4514 done = MSGLOOP_MSGCOMPLETE; 4515 break; 4516 } 4517 case MSG_EXT_PPR: 4518 { 4519 u_int period; 4520 u_int offset; 4521 u_int bus_width; 4522 u_int ppr_options; 4523 u_int saved_width; 4524 u_int saved_offset; 4525 u_int saved_ppr_options; 4526 4527 if (ahd->msgin_buf[1] != MSG_EXT_PPR_LEN) { 4528 reject = TRUE; 4529 break; 4530 } 4531 4532 /* 4533 * Wait until we have all args before validating 4534 * and acting on this message. 4535 * 4536 * Add one to MSG_EXT_PPR_LEN to account for 4537 * the extended message preamble. 4538 */ 4539 if (ahd->msgin_index < (MSG_EXT_PPR_LEN + 1)) 4540 break; 4541 4542 period = ahd->msgin_buf[3]; 4543 offset = ahd->msgin_buf[5]; 4544 bus_width = ahd->msgin_buf[6]; 4545 saved_width = bus_width; 4546 ppr_options = ahd->msgin_buf[7]; 4547 /* 4548 * According to the spec, a DT only 4549 * period factor with no DT option 4550 * set implies async. 4551 */ 4552 if ((ppr_options & MSG_EXT_PPR_DT_REQ) == 0 4553 && period <= 9) 4554 offset = 0; 4555 saved_ppr_options = ppr_options; 4556 saved_offset = offset; 4557 4558 /* 4559 * Transfer options are only available if we 4560 * are negotiating wide. 4561 */ 4562 if (bus_width == 0) 4563 ppr_options &= MSG_EXT_PPR_QAS_REQ; 4564 4565 ahd_validate_width(ahd, tinfo, &bus_width, 4566 devinfo->role); 4567 ahd_devlimited_syncrate(ahd, tinfo, &period, 4568 &ppr_options, devinfo->role); 4569 ahd_validate_offset(ahd, tinfo, period, &offset, 4570 bus_width, devinfo->role); 4571 4572 if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, TRUE)) { 4573 /* 4574 * If we are unable to do any of the 4575 * requested options (we went too low), 4576 * then we'll have to reject the message. 4577 */ 4578 if (saved_width > bus_width 4579 || saved_offset != offset 4580 || saved_ppr_options != ppr_options) { 4581 reject = TRUE; 4582 period = 0; 4583 offset = 0; 4584 bus_width = 0; 4585 ppr_options = 0; 4586 } 4587 } else { 4588 if (devinfo->role != ROLE_TARGET) 4589 printf("(%s:%c:%d:%d): Target " 4590 "Initiated PPR\n", 4591 ahd_name(ahd), devinfo->channel, 4592 devinfo->target, devinfo->lun); 4593 else 4594 printf("(%s:%c:%d:%d): Initiator " 4595 "Initiated PPR\n", 4596 ahd_name(ahd), devinfo->channel, 4597 devinfo->target, devinfo->lun); 4598 ahd->msgout_index = 0; 4599 ahd->msgout_len = 0; 4600 ahd_construct_ppr(ahd, devinfo, period, offset, 4601 bus_width, ppr_options); 4602 ahd->msgout_index = 0; 4603 response = TRUE; 4604 } 4605 if (bootverbose) { 4606 printf("(%s:%c:%d:%d): Received PPR width %x, " 4607 "period %x, offset %x,options %x\n" 4608 "\tFiltered to width %x, period %x, " 4609 "offset %x, options %x\n", 4610 ahd_name(ahd), devinfo->channel, 4611 devinfo->target, devinfo->lun, 4612 saved_width, ahd->msgin_buf[3], 4613 saved_offset, saved_ppr_options, 4614 bus_width, period, offset, ppr_options); 4615 } 4616 ahd_set_width(ahd, devinfo, bus_width, 4617 AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, 4618 /*paused*/TRUE); 4619 ahd_set_syncrate(ahd, devinfo, period, 4620 offset, ppr_options, 4621 AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, 4622 /*paused*/TRUE); 4623 4624 done = MSGLOOP_MSGCOMPLETE; 4625 break; 4626 } 4627 default: 4628 /* Unknown extended message. Reject it. */ 4629 reject = TRUE; 4630 break; 4631 } 4632 break; 4633 } 4634#ifdef AHD_TARGET_MODE 4635 case MSG_BUS_DEV_RESET: 4636 ahd_handle_devreset(ahd, devinfo, CAM_LUN_WILDCARD, 4637 CAM_BDR_SENT, 4638 "Bus Device Reset Received", 4639 /*verbose_level*/0); 4640 ahd_restart(ahd); 4641 done = MSGLOOP_TERMINATED; 4642 break; 4643 case MSG_ABORT_TAG: 4644 case MSG_ABORT: 4645 case MSG_CLEAR_QUEUE: 4646 { 4647 int tag; 4648 4649 /* Target mode messages */ 4650 if (devinfo->role != ROLE_TARGET) { 4651 reject = TRUE; 4652 break; 4653 } 4654 tag = SCB_LIST_NULL; 4655 if (ahd->msgin_buf[0] == MSG_ABORT_TAG) 4656 tag = ahd_inb(ahd, INITIATOR_TAG); 4657 ahd_abort_scbs(ahd, devinfo->target, devinfo->channel, 4658 devinfo->lun, tag, ROLE_TARGET, 4659 CAM_REQ_ABORTED); 4660 4661 tstate = ahd->enabled_targets[devinfo->our_scsiid]; 4662 if (tstate != NULL) { 4663 struct ahd_tmode_lstate* lstate; 4664 4665 lstate = tstate->enabled_luns[devinfo->lun]; 4666 if (lstate != NULL) { 4667 ahd_queue_lstate_event(ahd, lstate, 4668 devinfo->our_scsiid, 4669 ahd->msgin_buf[0], 4670 /*arg*/tag); 4671 ahd_send_lstate_events(ahd, lstate); 4672 } 4673 } 4674 ahd_restart(ahd); 4675 done = MSGLOOP_TERMINATED; 4676 break; 4677 } 4678#endif 4679 case MSG_QAS_REQUEST: 4680#ifdef AHD_DEBUG 4681 if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) 4682 printf("%s: QAS request. SCSISIGI == 0x%x\n", 4683 ahd_name(ahd), ahd_inb(ahd, SCSISIGI)); 4684#endif 4685 ahd->msg_flags |= MSG_FLAG_EXPECT_QASREJ_BUSFREE; 4686 /* FALLTHROUGH */ 4687 case MSG_TERM_IO_PROC: 4688 default: 4689 reject = TRUE; 4690 break; 4691 } 4692 4693 if (reject) { 4694 /* 4695 * Setup to reject the message. 4696 */ 4697 ahd->msgout_index = 0; 4698 ahd->msgout_len = 1; 4699 ahd->msgout_buf[0] = MSG_MESSAGE_REJECT; 4700 done = MSGLOOP_MSGCOMPLETE; 4701 response = TRUE; 4702 } 4703 4704 if (done != MSGLOOP_IN_PROG && !response) 4705 /* Clear the outgoing message buffer */ 4706 ahd->msgout_len = 0; 4707 4708 return (done); 4709} 4710 4711/* 4712 * Process a message reject message. 4713 */ 4714static int 4715ahd_handle_msg_reject(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 4716{ 4717 /* 4718 * What we care about here is if we had an 4719 * outstanding SDTR or WDTR message for this 4720 * target. If we did, this is a signal that 4721 * the target is refusing negotiation. 4722 */ 4723 struct scb *scb; 4724 struct ahd_initiator_tinfo *tinfo; 4725 struct ahd_tmode_tstate *tstate; 4726 u_int scb_index; 4727 u_int last_msg; 4728 int response = 0; 4729 4730 scb_index = ahd_get_scbptr(ahd); 4731 scb = ahd_lookup_scb(ahd, scb_index); 4732 tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, 4733 devinfo->our_scsiid, 4734 devinfo->target, &tstate); 4735 /* Might be necessary */ 4736 last_msg = ahd_inb(ahd, LAST_MSG); 4737 4738 if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, /*full*/FALSE)) { 4739 if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, /*full*/TRUE) 4740 && tinfo->goal.period <= AHD_SYNCRATE_PACED) { 4741 /* 4742 * Target may not like our SPI-4 PPR Options. 4743 * Attempt to negotiate 80MHz which will turn 4744 * off these options. 4745 */ 4746 if (bootverbose) { 4747 printf("(%s:%c:%d:%d): PPR Rejected. " 4748 "Trying simple U160 PPR\n", 4749 ahd_name(ahd), devinfo->channel, 4750 devinfo->target, devinfo->lun); 4751 } 4752 tinfo->goal.period = AHD_SYNCRATE_DT; 4753 tinfo->goal.ppr_options &= MSG_EXT_PPR_IU_REQ 4754 | MSG_EXT_PPR_QAS_REQ 4755 | MSG_EXT_PPR_DT_REQ; 4756 } else { 4757 /* 4758 * Target does not support the PPR message. 4759 * Attempt to negotiate SPI-2 style. 4760 */ 4761 if (bootverbose) { 4762 printf("(%s:%c:%d:%d): PPR Rejected. " 4763 "Trying WDTR/SDTR\n", 4764 ahd_name(ahd), devinfo->channel, 4765 devinfo->target, devinfo->lun); 4766 } 4767 tinfo->goal.ppr_options = 0; 4768 tinfo->curr.transport_version = 2; 4769 tinfo->goal.transport_version = 2; 4770 } 4771 ahd->msgout_index = 0; 4772 ahd->msgout_len = 0; 4773 ahd_build_transfer_msg(ahd, devinfo); 4774 ahd->msgout_index = 0; 4775 response = 1; 4776 } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, /*full*/FALSE)) { 4777 4778 /* note 8bit xfers */ 4779 printf("(%s:%c:%d:%d): refuses WIDE negotiation. Using " 4780 "8bit transfers\n", ahd_name(ahd), 4781 devinfo->channel, devinfo->target, devinfo->lun); 4782 ahd_set_width(ahd, devinfo, MSG_EXT_WDTR_BUS_8_BIT, 4783 AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, 4784 /*paused*/TRUE); 4785 /* 4786 * No need to clear the sync rate. If the target 4787 * did not accept the command, our syncrate is 4788 * unaffected. If the target started the negotiation, 4789 * but rejected our response, we already cleared the 4790 * sync rate before sending our WDTR. 4791 */ 4792 if (tinfo->goal.offset != tinfo->curr.offset) { 4793 4794 /* Start the sync negotiation */ 4795 ahd->msgout_index = 0; 4796 ahd->msgout_len = 0; 4797 ahd_build_transfer_msg(ahd, devinfo); 4798 ahd->msgout_index = 0; 4799 response = 1; 4800 } 4801 } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, /*full*/FALSE)) { 4802 /* note asynch xfers and clear flag */ 4803 ahd_set_syncrate(ahd, devinfo, /*period*/0, 4804 /*offset*/0, /*ppr_options*/0, 4805 AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, 4806 /*paused*/TRUE); 4807 printf("(%s:%c:%d:%d): refuses synchronous negotiation. " 4808 "Using asynchronous transfers\n", 4809 ahd_name(ahd), devinfo->channel, 4810 devinfo->target, devinfo->lun); 4811 } else if ((scb->hscb->control & MSG_SIMPLE_TASK) != 0) { 4812 int tag_type; 4813 int mask; 4814 4815 tag_type = (scb->hscb->control & MSG_SIMPLE_TASK); 4816 4817 if (tag_type == MSG_SIMPLE_TASK) { 4818 printf("(%s:%c:%d:%d): refuses tagged commands. " 4819 "Performing non-tagged I/O\n", ahd_name(ahd), 4820 devinfo->channel, devinfo->target, devinfo->lun); 4821 ahd_set_tags(ahd, devinfo, AHD_QUEUE_NONE); 4822 mask = ~0x23; 4823 } else { 4824 printf("(%s:%c:%d:%d): refuses %s tagged commands. " 4825 "Performing simple queue tagged I/O only\n", 4826 ahd_name(ahd), devinfo->channel, devinfo->target, 4827 devinfo->lun, tag_type == MSG_ORDERED_TASK 4828 ? "ordered" : "head of queue"); 4829 ahd_set_tags(ahd, devinfo, AHD_QUEUE_BASIC); 4830 mask = ~0x03; 4831 } 4832 4833 /* 4834 * Resend the identify for this CCB as the target 4835 * may believe that the selection is invalid otherwise. 4836 */ 4837 ahd_outb(ahd, SCB_CONTROL, 4838 ahd_inb_scbram(ahd, SCB_CONTROL) & mask); 4839 scb->hscb->control &= mask; 4840 aic_set_transaction_tag(scb, /*enabled*/FALSE, 4841 /*type*/MSG_SIMPLE_TASK); 4842 ahd_outb(ahd, MSG_OUT, MSG_IDENTIFYFLAG); 4843 ahd_assert_atn(ahd); 4844 ahd_busy_tcl(ahd, BUILD_TCL(scb->hscb->scsiid, devinfo->lun), 4845 SCB_GET_TAG(scb)); 4846 4847 /* 4848 * Requeue all tagged commands for this target 4849 * currently in our posession so they can be 4850 * converted to untagged commands. 4851 */ 4852 ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb), 4853 SCB_GET_CHANNEL(ahd, scb), 4854 SCB_GET_LUN(scb), /*tag*/SCB_LIST_NULL, 4855 ROLE_INITIATOR, CAM_REQUEUE_REQ, 4856 SEARCH_COMPLETE); 4857 } else if (ahd_sent_msg(ahd, AHDMSG_1B, MSG_IDENTIFYFLAG, TRUE)) { 4858 /* 4859 * Most likely the device believes that we had 4860 * previously negotiated packetized. 4861 */ 4862 ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE 4863 | MSG_FLAG_IU_REQ_CHANGED; 4864 4865 ahd_force_renegotiation(ahd, devinfo); 4866 ahd->msgout_index = 0; 4867 ahd->msgout_len = 0; 4868 ahd_build_transfer_msg(ahd, devinfo); 4869 ahd->msgout_index = 0; 4870 response = 1; 4871 } else { 4872 /* 4873 * Otherwise, we ignore it. 4874 */ 4875 printf("%s:%c:%d: Message reject for %x -- ignored\n", 4876 ahd_name(ahd), devinfo->channel, devinfo->target, 4877 last_msg); 4878 } 4879 return (response); 4880} 4881 4882/* 4883 * Process an ingnore wide residue message. 4884 */ 4885static void 4886ahd_handle_ign_wide_residue(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 4887{ 4888 u_int scb_index; 4889 struct scb *scb; 4890 4891 scb_index = ahd_get_scbptr(ahd); 4892 scb = ahd_lookup_scb(ahd, scb_index); 4893 /* 4894 * XXX Actually check data direction in the sequencer? 4895 * Perhaps add datadir to some spare bits in the hscb? 4896 */ 4897 if ((ahd_inb(ahd, SEQ_FLAGS) & DPHASE) == 0 4898 || aic_get_transfer_dir(scb) != CAM_DIR_IN) { 4899 /* 4900 * Ignore the message if we haven't 4901 * seen an appropriate data phase yet. 4902 */ 4903 } else { 4904 /* 4905 * If the residual occurred on the last 4906 * transfer and the transfer request was 4907 * expected to end on an odd count, do 4908 * nothing. Otherwise, subtract a byte 4909 * and update the residual count accordingly. 4910 */ 4911 uint32_t sgptr; 4912 4913 sgptr = ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR); 4914 if ((sgptr & SG_LIST_NULL) != 0 4915 && (ahd_inb_scbram(ahd, SCB_TASK_ATTRIBUTE) 4916 & SCB_XFERLEN_ODD) != 0) { 4917 /* 4918 * If the residual occurred on the last 4919 * transfer and the transfer request was 4920 * expected to end on an odd count, do 4921 * nothing. 4922 */ 4923 } else { 4924 uint32_t data_cnt; 4925 uint64_t data_addr; 4926 uint32_t sglen; 4927 4928 /* Pull in the rest of the sgptr */ 4929 sgptr = ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR); 4930 data_cnt = ahd_inl_scbram(ahd, SCB_RESIDUAL_DATACNT); 4931 if ((sgptr & SG_LIST_NULL) != 0) { 4932 /* 4933 * The residual data count is not updated 4934 * for the command run to completion case. 4935 * Explicitly zero the count. 4936 */ 4937 data_cnt &= ~AHD_SG_LEN_MASK; 4938 } 4939 data_addr = ahd_inq(ahd, SHADDR); 4940 data_cnt += 1; 4941 data_addr -= 1; 4942 sgptr &= SG_PTR_MASK; 4943 if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) { 4944 struct ahd_dma64_seg *sg; 4945 4946 sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); 4947 4948 /* 4949 * The residual sg ptr points to the next S/G 4950 * to load so we must go back one. 4951 */ 4952 sg--; 4953 sglen = aic_le32toh(sg->len) & AHD_SG_LEN_MASK; 4954 if (sg != scb->sg_list 4955 && sglen < (data_cnt & AHD_SG_LEN_MASK)) { 4956 4957 sg--; 4958 sglen = aic_le32toh(sg->len); 4959 /* 4960 * Preserve High Address and SG_LIST 4961 * bits while setting the count to 1. 4962 */ 4963 data_cnt = 1|(sglen&(~AHD_SG_LEN_MASK)); 4964 data_addr = aic_le64toh(sg->addr) 4965 + (sglen & AHD_SG_LEN_MASK) 4966 - 1; 4967 4968 /* 4969 * Increment sg so it points to the 4970 * "next" sg. 4971 */ 4972 sg++; 4973 sgptr = ahd_sg_virt_to_bus(ahd, scb, 4974 sg); 4975 } 4976 } else { 4977 struct ahd_dma_seg *sg; 4978 4979 sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); 4980 4981 /* 4982 * The residual sg ptr points to the next S/G 4983 * to load so we must go back one. 4984 */ 4985 sg--; 4986 sglen = aic_le32toh(sg->len) & AHD_SG_LEN_MASK; 4987 if (sg != scb->sg_list 4988 && sglen < (data_cnt & AHD_SG_LEN_MASK)) { 4989 4990 sg--; 4991 sglen = aic_le32toh(sg->len); 4992 /* 4993 * Preserve High Address and SG_LIST 4994 * bits while setting the count to 1. 4995 */ 4996 data_cnt = 1|(sglen&(~AHD_SG_LEN_MASK)); 4997 data_addr = aic_le32toh(sg->addr) 4998 + (sglen & AHD_SG_LEN_MASK) 4999 - 1; 5000 5001 /* 5002 * Increment sg so it points to the 5003 * "next" sg. 5004 */ 5005 sg++; 5006 sgptr = ahd_sg_virt_to_bus(ahd, scb, 5007 sg); 5008 } 5009 } 5010 /* 5011 * Toggle the "oddness" of the transfer length 5012 * to handle this mid-transfer ignore wide 5013 * residue. This ensures that the oddness is 5014 * correct for subsequent data transfers. 5015 */ 5016 ahd_outb(ahd, SCB_TASK_ATTRIBUTE, 5017 ahd_inb_scbram(ahd, SCB_TASK_ATTRIBUTE) 5018 ^ SCB_XFERLEN_ODD); 5019 5020 ahd_outl(ahd, SCB_RESIDUAL_SGPTR, sgptr); 5021 ahd_outl(ahd, SCB_RESIDUAL_DATACNT, data_cnt); 5022 /* 5023 * The FIFO's pointers will be updated if/when the 5024 * sequencer re-enters a data phase. 5025 */ 5026 } 5027 } 5028} 5029 5030 5031/* 5032 * Reinitialize the data pointers for the active transfer 5033 * based on its current residual. 5034 */ 5035static void 5036ahd_reinitialize_dataptrs(struct ahd_softc *ahd) 5037{ 5038 struct scb *scb; 5039 ahd_mode_state saved_modes; 5040 u_int scb_index; 5041 u_int wait; 5042 uint32_t sgptr; 5043 uint32_t resid; 5044 uint64_t dataptr; 5045 5046 AHD_ASSERT_MODES(ahd, AHD_MODE_DFF0_MSK|AHD_MODE_DFF1_MSK, 5047 AHD_MODE_DFF0_MSK|AHD_MODE_DFF1_MSK); 5048 5049 scb_index = ahd_get_scbptr(ahd); 5050 scb = ahd_lookup_scb(ahd, scb_index); 5051 5052 /* 5053 * Release and reacquire the FIFO so we 5054 * have a clean slate. 5055 */ 5056 ahd_outb(ahd, DFFSXFRCTL, CLRCHN); 5057 wait = 1000; 5058 while (--wait && !(ahd_inb(ahd, MDFFSTAT) & FIFOFREE)) 5059 aic_delay(100); 5060 if (wait == 0) { 5061 ahd_print_path(ahd, scb); 5062 printf("ahd_reinitialize_dataptrs: Forcing FIFO free.\n"); 5063 ahd_outb(ahd, DFFSXFRCTL, RSTCHN|CLRSHCNT); 5064 } 5065 saved_modes = ahd_save_modes(ahd); 5066 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 5067 ahd_outb(ahd, DFFSTAT, 5068 ahd_inb(ahd, DFFSTAT) 5069 | (saved_modes == 0x11 ? CURRFIFO_1 : CURRFIFO_0)); 5070 5071 /* 5072 * Determine initial values for data_addr and data_cnt 5073 * for resuming the data phase. 5074 */ 5075 sgptr = ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR); 5076 sgptr &= SG_PTR_MASK; 5077 5078 resid = (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT + 2) << 16) 5079 | (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT + 1) << 8) 5080 | ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT); 5081 5082 if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) { 5083 struct ahd_dma64_seg *sg; 5084 5085 sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); 5086 5087 /* The residual sg_ptr always points to the next sg */ 5088 sg--; 5089 5090 dataptr = aic_le64toh(sg->addr) 5091 + (aic_le32toh(sg->len) & AHD_SG_LEN_MASK) 5092 - resid; 5093 ahd_outl(ahd, HADDR + 4, dataptr >> 32); 5094 } else { 5095 struct ahd_dma_seg *sg; 5096 5097 sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); 5098 5099 /* The residual sg_ptr always points to the next sg */ 5100 sg--; 5101 5102 dataptr = aic_le32toh(sg->addr) 5103 + (aic_le32toh(sg->len) & AHD_SG_LEN_MASK) 5104 - resid; 5105 ahd_outb(ahd, HADDR + 4, 5106 (aic_le32toh(sg->len) & ~AHD_SG_LEN_MASK) >> 24); 5107 } 5108 ahd_outl(ahd, HADDR, dataptr); 5109 ahd_outb(ahd, HCNT + 2, resid >> 16); 5110 ahd_outb(ahd, HCNT + 1, resid >> 8); 5111 ahd_outb(ahd, HCNT, resid); 5112} 5113 5114/* 5115 * Handle the effects of issuing a bus device reset message. 5116 */ 5117static void 5118ahd_handle_devreset(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 5119 u_int lun, cam_status status, char *message, 5120 int verbose_level) 5121{ 5122#ifdef AHD_TARGET_MODE 5123 struct ahd_tmode_tstate* tstate; 5124#endif 5125 int found; 5126 5127 found = ahd_abort_scbs(ahd, devinfo->target, devinfo->channel, 5128 lun, SCB_LIST_NULL, devinfo->role, 5129 status); 5130 5131#ifdef AHD_TARGET_MODE 5132 /* 5133 * Send an immediate notify ccb to all target mord peripheral 5134 * drivers affected by this action. 5135 */ 5136 tstate = ahd->enabled_targets[devinfo->our_scsiid]; 5137 if (tstate != NULL) { 5138 u_int cur_lun; 5139 u_int max_lun; 5140 5141 if (lun != CAM_LUN_WILDCARD) { 5142 cur_lun = 0; 5143 max_lun = AHD_NUM_LUNS - 1; 5144 } else { 5145 cur_lun = lun; 5146 max_lun = lun; 5147 } 5148 for (cur_lun <= max_lun; cur_lun++) { 5149 struct ahd_tmode_lstate* lstate; 5150 5151 lstate = tstate->enabled_luns[cur_lun]; 5152 if (lstate == NULL) 5153 continue; 5154 5155 ahd_queue_lstate_event(ahd, lstate, devinfo->our_scsiid, 5156 MSG_BUS_DEV_RESET, /*arg*/0); 5157 ahd_send_lstate_events(ahd, lstate); 5158 } 5159 } 5160#endif 5161 5162 /* 5163 * Go back to async/narrow transfers and renegotiate. 5164 */ 5165 ahd_set_width(ahd, devinfo, MSG_EXT_WDTR_BUS_8_BIT, 5166 AHD_TRANS_CUR, /*paused*/TRUE); 5167 ahd_set_syncrate(ahd, devinfo, /*period*/0, /*offset*/0, 5168 /*ppr_options*/0, AHD_TRANS_CUR, 5169 /*paused*/TRUE); 5170 5171 if (status != CAM_SEL_TIMEOUT) 5172 ahd_send_async(ahd, devinfo->channel, devinfo->target, 5173 lun, AC_SENT_BDR, NULL); 5174 5175 if (message != NULL 5176 && (verbose_level <= bootverbose)) { 5177 AHD_CORRECTABLE_ERROR(ahd); 5178 printf("%s: %s on %c:%d. %d SCBs aborted\n", ahd_name(ahd), 5179 message, devinfo->channel, devinfo->target, found); 5180 } 5181} 5182 5183#ifdef AHD_TARGET_MODE 5184static void 5185ahd_setup_target_msgin(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, 5186 struct scb *scb) 5187{ 5188 5189 /* 5190 * To facilitate adding multiple messages together, 5191 * each routine should increment the index and len 5192 * variables instead of setting them explicitly. 5193 */ 5194 ahd->msgout_index = 0; 5195 ahd->msgout_len = 0; 5196 5197 if (scb != NULL && (scb->flags & SCB_AUTO_NEGOTIATE) != 0) 5198 ahd_build_transfer_msg(ahd, devinfo); 5199 else 5200 panic("ahd_intr: AWAITING target message with no message"); 5201 5202 ahd->msgout_index = 0; 5203 ahd->msg_type = MSG_TYPE_TARGET_MSGIN; 5204} 5205#endif 5206/**************************** Initialization **********************************/ 5207static u_int 5208ahd_sglist_size(struct ahd_softc *ahd) 5209{ 5210 bus_size_t list_size; 5211 5212 list_size = sizeof(struct ahd_dma_seg) * AHD_NSEG; 5213 if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) 5214 list_size = sizeof(struct ahd_dma64_seg) * AHD_NSEG; 5215 return (list_size); 5216} 5217 5218/* 5219 * Calculate the optimum S/G List allocation size. S/G elements used 5220 * for a given transaction must be physically contiguous. Assume the 5221 * OS will allocate full pages to us, so it doesn't make sense to request 5222 * less than a page. 5223 */ 5224static u_int 5225ahd_sglist_allocsize(struct ahd_softc *ahd) 5226{ 5227 bus_size_t sg_list_increment; 5228 bus_size_t sg_list_size; 5229 bus_size_t max_list_size; 5230 bus_size_t best_list_size; 5231 5232 /* Start out with the minimum required for AHD_NSEG. */ 5233 sg_list_increment = ahd_sglist_size(ahd); 5234 sg_list_size = sg_list_increment; 5235 5236 /* Get us as close as possible to a page in size. */ 5237 while ((sg_list_size + sg_list_increment) <= PAGE_SIZE) 5238 sg_list_size += sg_list_increment; 5239 5240 /* 5241 * Try to reduce the amount of wastage by allocating 5242 * multiple pages. 5243 */ 5244 best_list_size = sg_list_size; 5245 max_list_size = roundup(sg_list_increment, PAGE_SIZE); 5246 if (max_list_size < 4 * PAGE_SIZE) 5247 max_list_size = 4 * PAGE_SIZE; 5248 if (max_list_size > (AHD_SCB_MAX_ALLOC * sg_list_increment)) 5249 max_list_size = (AHD_SCB_MAX_ALLOC * sg_list_increment); 5250 while ((sg_list_size + sg_list_increment) <= max_list_size 5251 && (sg_list_size % PAGE_SIZE) != 0) { 5252 bus_size_t new_mod; 5253 bus_size_t best_mod; 5254 5255 sg_list_size += sg_list_increment; 5256 new_mod = sg_list_size % PAGE_SIZE; 5257 best_mod = best_list_size % PAGE_SIZE; 5258 if (new_mod > best_mod || new_mod == 0) { 5259 best_list_size = sg_list_size; 5260 } 5261 } 5262 return (best_list_size); 5263} 5264 5265/* 5266 * Allocate a controller structure for a new device 5267 * and perform initial initializion. 5268 */ 5269struct ahd_softc * 5270ahd_alloc(void *platform_arg, char *name) 5271{ 5272 struct ahd_softc *ahd; 5273 5274#ifndef __FreeBSD__ 5275 ahd = malloc(sizeof(*ahd), M_DEVBUF, M_NOWAIT); 5276 if (!ahd) { 5277 printf("aic7xxx: cannot malloc softc!\n"); 5278 free(name, M_DEVBUF); 5279 return NULL; 5280 } 5281#else 5282 ahd = device_get_softc((device_t)platform_arg); 5283#endif 5284 memset(ahd, 0, sizeof(*ahd)); 5285 ahd->seep_config = malloc(sizeof(*ahd->seep_config), 5286 M_DEVBUF, M_NOWAIT); 5287 if (ahd->seep_config == NULL) { 5288#ifndef __FreeBSD__ 5289 free(ahd, M_DEVBUF); 5290#endif 5291 free(name, M_DEVBUF); 5292 return (NULL); 5293 } 5294 LIST_INIT(&ahd->pending_scbs); 5295 LIST_INIT(&ahd->timedout_scbs); 5296 /* We don't know our unit number until the OSM sets it */ 5297 ahd->name = name; 5298 ahd->unit = -1; 5299 ahd->description = NULL; 5300 ahd->bus_description = NULL; 5301 ahd->channel = 'A'; 5302 ahd->chip = AHD_NONE; 5303 ahd->features = AHD_FENONE; 5304 ahd->bugs = AHD_BUGNONE; 5305 ahd->flags = AHD_SPCHK_ENB_A|AHD_RESET_BUS_A|AHD_TERM_ENB_A 5306 | AHD_EXTENDED_TRANS_A|AHD_STPWLEVEL_A; 5307 aic_timer_init(&ahd->reset_timer); 5308 aic_timer_init(&ahd->stat_timer); 5309 ahd->int_coalescing_timer = AHD_INT_COALESCING_TIMER_DEFAULT; 5310 ahd->int_coalescing_maxcmds = AHD_INT_COALESCING_MAXCMDS_DEFAULT; 5311 ahd->int_coalescing_mincmds = AHD_INT_COALESCING_MINCMDS_DEFAULT; 5312 ahd->int_coalescing_threshold = AHD_INT_COALESCING_THRESHOLD_DEFAULT; 5313 ahd->int_coalescing_stop_threshold = 5314 AHD_INT_COALESCING_STOP_THRESHOLD_DEFAULT; 5315 5316 if (ahd_platform_alloc(ahd, platform_arg) != 0) { 5317 ahd_free(ahd); 5318 ahd = NULL; 5319 } 5320 ahd_lockinit(ahd); 5321#ifdef AHD_DEBUG 5322 if ((ahd_debug & AHD_SHOW_MEMORY) != 0) { 5323 printf("%s: scb size = 0x%x, hscb size = 0x%x\n", 5324 ahd_name(ahd), (u_int)sizeof(struct scb), 5325 (u_int)sizeof(struct hardware_scb)); 5326 } 5327#endif 5328 return (ahd); 5329} 5330 5331int 5332ahd_softc_init(struct ahd_softc *ahd) 5333{ 5334 5335 ahd->unpause = 0; 5336 ahd->pause = PAUSE; 5337 return (0); 5338} 5339 5340void 5341ahd_softc_insert(struct ahd_softc *ahd) 5342{ 5343 struct ahd_softc *list_ahd; 5344 5345#if AIC_PCI_CONFIG > 0 5346 /* 5347 * Second Function PCI devices need to inherit some 5348 * settings from function 0. 5349 */ 5350 if ((ahd->features & AHD_MULTI_FUNC) != 0) { 5351 TAILQ_FOREACH(list_ahd, &ahd_tailq, links) { 5352 aic_dev_softc_t list_pci; 5353 aic_dev_softc_t pci; 5354 5355 list_pci = list_ahd->dev_softc; 5356 pci = ahd->dev_softc; 5357 if (aic_get_pci_slot(list_pci) == aic_get_pci_slot(pci) 5358 && aic_get_pci_bus(list_pci) == aic_get_pci_bus(pci)) { 5359 struct ahd_softc *master; 5360 struct ahd_softc *slave; 5361 5362 if (aic_get_pci_function(list_pci) == 0) { 5363 master = list_ahd; 5364 slave = ahd; 5365 } else { 5366 master = ahd; 5367 slave = list_ahd; 5368 } 5369 slave->flags &= ~AHD_BIOS_ENABLED; 5370 slave->flags |= 5371 master->flags & AHD_BIOS_ENABLED; 5372 break; 5373 } 5374 } 5375 } 5376#endif 5377 5378 /* 5379 * Insertion sort into our list of softcs. 5380 */ 5381 list_ahd = TAILQ_FIRST(&ahd_tailq); 5382 while (list_ahd != NULL 5383 && ahd_softc_comp(ahd, list_ahd) <= 0) 5384 list_ahd = TAILQ_NEXT(list_ahd, links); 5385 if (list_ahd != NULL) 5386 TAILQ_INSERT_BEFORE(list_ahd, ahd, links); 5387 else 5388 TAILQ_INSERT_TAIL(&ahd_tailq, ahd, links); 5389 ahd->init_level++; 5390} 5391 5392void 5393ahd_set_unit(struct ahd_softc *ahd, int unit) 5394{ 5395 ahd->unit = unit; 5396} 5397 5398void 5399ahd_set_name(struct ahd_softc *ahd, char *name) 5400{ 5401 if (ahd->name != NULL) 5402 free(ahd->name, M_DEVBUF); 5403 ahd->name = name; 5404} 5405 5406void 5407ahd_free(struct ahd_softc *ahd) 5408{ 5409 int i; 5410 5411 ahd_terminate_recovery_thread(ahd); 5412 switch (ahd->init_level) { 5413 default: 5414 case 5: 5415 ahd_shutdown(ahd); 5416 /* FALLTHROUGH */ 5417 case 4: 5418 aic_dmamap_unload(ahd, ahd->shared_data_dmat, 5419 ahd->shared_data_map.dmamap); 5420 /* FALLTHROUGH */ 5421 case 3: 5422 aic_dmamem_free(ahd, ahd->shared_data_dmat, ahd->qoutfifo, 5423 ahd->shared_data_map.dmamap); 5424 aic_dmamap_destroy(ahd, ahd->shared_data_dmat, 5425 ahd->shared_data_map.dmamap); 5426 /* FALLTHROUGH */ 5427 case 2: 5428 aic_dma_tag_destroy(ahd, ahd->shared_data_dmat); 5429 case 1: 5430#ifndef __linux__ 5431 aic_dma_tag_destroy(ahd, ahd->buffer_dmat); 5432#endif 5433 break; 5434 case 0: 5435 break; 5436 } 5437 5438#ifndef __linux__ 5439 aic_dma_tag_destroy(ahd, ahd->parent_dmat); 5440#endif 5441 ahd_platform_free(ahd); 5442 ahd_fini_scbdata(ahd); 5443 for (i = 0; i < AHD_NUM_TARGETS; i++) { 5444 struct ahd_tmode_tstate *tstate; 5445 5446 tstate = ahd->enabled_targets[i]; 5447 if (tstate != NULL) { 5448#ifdef AHD_TARGET_MODE 5449 int j; 5450 5451 for (j = 0; j < AHD_NUM_LUNS; j++) { 5452 struct ahd_tmode_lstate *lstate; 5453 5454 lstate = tstate->enabled_luns[j]; 5455 if (lstate != NULL) { 5456 xpt_free_path(lstate->path); 5457 free(lstate, M_DEVBUF); 5458 } 5459 } 5460#endif 5461 free(tstate, M_DEVBUF); 5462 } 5463 } 5464#ifdef AHD_TARGET_MODE 5465 if (ahd->black_hole != NULL) { 5466 xpt_free_path(ahd->black_hole->path); 5467 free(ahd->black_hole, M_DEVBUF); 5468 } 5469#endif 5470 if (ahd->name != NULL) 5471 free(ahd->name, M_DEVBUF); 5472 if (ahd->seep_config != NULL) 5473 free(ahd->seep_config, M_DEVBUF); 5474 if (ahd->saved_stack != NULL) 5475 free(ahd->saved_stack, M_DEVBUF); 5476#ifndef __FreeBSD__ 5477 free(ahd, M_DEVBUF); 5478#endif 5479 return; 5480} 5481 5482void 5483ahd_shutdown(void *arg) 5484{ 5485 struct ahd_softc *ahd; 5486 5487 ahd = (struct ahd_softc *)arg; 5488 5489 /* 5490 * Stop periodic timer callbacks. 5491 */ 5492 aic_timer_stop(&ahd->reset_timer); 5493 aic_timer_stop(&ahd->stat_timer); 5494 5495 /* This will reset most registers to 0, but not all */ 5496 ahd_reset(ahd, /*reinit*/FALSE); 5497} 5498 5499/* 5500 * Reset the controller and record some information about it 5501 * that is only available just after a reset. If "reinit" is 5502 * non-zero, this reset occured after initial configuration 5503 * and the caller requests that the chip be fully reinitialized 5504 * to a runable state. Chip interrupts are *not* enabled after 5505 * a reinitialization. The caller must enable interrupts via 5506 * ahd_intr_enable(). 5507 */ 5508int 5509ahd_reset(struct ahd_softc *ahd, int reinit) 5510{ 5511 u_int sxfrctl1; 5512 int wait; 5513 uint32_t cmd; 5514 5515 /* 5516 * Preserve the value of the SXFRCTL1 register for all channels. 5517 * It contains settings that affect termination and we don't want 5518 * to disturb the integrity of the bus. 5519 */ 5520 ahd_pause(ahd); 5521 ahd_update_modes(ahd); 5522 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 5523 sxfrctl1 = ahd_inb(ahd, SXFRCTL1); 5524 5525 cmd = aic_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2); 5526 if ((ahd->bugs & AHD_PCIX_CHIPRST_BUG) != 0) { 5527 uint32_t mod_cmd; 5528 5529 /* 5530 * A4 Razor #632 5531 * During the assertion of CHIPRST, the chip 5532 * does not disable its parity logic prior to 5533 * the start of the reset. This may cause a 5534 * parity error to be detected and thus a 5535 * spurious SERR or PERR assertion. Disble 5536 * PERR and SERR responses during the CHIPRST. 5537 */ 5538 mod_cmd = cmd & ~(PCIM_CMD_PERRESPEN|PCIM_CMD_SERRESPEN); 5539 aic_pci_write_config(ahd->dev_softc, PCIR_COMMAND, 5540 mod_cmd, /*bytes*/2); 5541 } 5542 ahd_outb(ahd, HCNTRL, CHIPRST | ahd->pause); 5543 5544 /* 5545 * Ensure that the reset has finished. We delay 1000us 5546 * prior to reading the register to make sure the chip 5547 * has sufficiently completed its reset to handle register 5548 * accesses. 5549 */ 5550 wait = 1000; 5551 do { 5552 aic_delay(1000); 5553 } while (--wait && !(ahd_inb(ahd, HCNTRL) & CHIPRSTACK)); 5554 5555 if (wait == 0) { 5556 printf("%s: WARNING - Failed chip reset! " 5557 "Trying to initialize anyway.\n", ahd_name(ahd)); 5558 AHD_FATAL_ERROR(ahd); 5559 } 5560 ahd_outb(ahd, HCNTRL, ahd->pause); 5561 5562 if ((ahd->bugs & AHD_PCIX_CHIPRST_BUG) != 0) { 5563 /* 5564 * Clear any latched PCI error status and restore 5565 * previous SERR and PERR response enables. 5566 */ 5567 aic_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1, 5568 0xFF, /*bytes*/1); 5569 aic_pci_write_config(ahd->dev_softc, PCIR_COMMAND, 5570 cmd, /*bytes*/2); 5571 } 5572 5573 /* 5574 * Mode should be SCSI after a chip reset, but lets 5575 * set it just to be safe. We touch the MODE_PTR 5576 * register directly so as to bypass the lazy update 5577 * code in ahd_set_modes(). 5578 */ 5579 ahd_known_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 5580 ahd_outb(ahd, MODE_PTR, 5581 ahd_build_mode_state(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI)); 5582 5583 /* 5584 * Restore SXFRCTL1. 5585 * 5586 * We must always initialize STPWEN to 1 before we 5587 * restore the saved values. STPWEN is initialized 5588 * to a tri-state condition which can only be cleared 5589 * by turning it on. 5590 */ 5591 ahd_outb(ahd, SXFRCTL1, sxfrctl1|STPWEN); 5592 ahd_outb(ahd, SXFRCTL1, sxfrctl1); 5593 5594 /* Determine chip configuration */ 5595 ahd->features &= ~AHD_WIDE; 5596 if ((ahd_inb(ahd, SBLKCTL) & SELWIDE) != 0) 5597 ahd->features |= AHD_WIDE; 5598 5599 /* 5600 * If a recovery action has forced a chip reset, 5601 * re-initialize the chip to our liking. 5602 */ 5603 if (reinit != 0) 5604 ahd_chip_init(ahd); 5605 5606 return (0); 5607} 5608 5609/* 5610 * Determine the number of SCBs available on the controller 5611 */ 5612int 5613ahd_probe_scbs(struct ahd_softc *ahd) { 5614 int i; 5615 5616 AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK), 5617 ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK)); 5618 for (i = 0; i < AHD_SCB_MAX; i++) { 5619 int j; 5620 5621 ahd_set_scbptr(ahd, i); 5622 ahd_outw(ahd, SCB_BASE, i); 5623 for (j = 2; j < 64; j++) 5624 ahd_outb(ahd, SCB_BASE+j, 0); 5625 /* Start out life as unallocated (needing an abort) */ 5626 ahd_outb(ahd, SCB_CONTROL, MK_MESSAGE); 5627 if (ahd_inw_scbram(ahd, SCB_BASE) != i) 5628 break; 5629 ahd_set_scbptr(ahd, 0); 5630 if (ahd_inw_scbram(ahd, SCB_BASE) != 0) 5631 break; 5632 } 5633 return (i); 5634} 5635 5636static void 5637ahd_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 5638{ 5639 bus_addr_t *baddr; 5640 5641 baddr = (bus_addr_t *)arg; 5642 *baddr = segs->ds_addr; 5643} 5644 5645static void 5646ahd_initialize_hscbs(struct ahd_softc *ahd) 5647{ 5648 int i; 5649 5650 for (i = 0; i < ahd->scb_data.maxhscbs; i++) { 5651 ahd_set_scbptr(ahd, i); 5652 5653 /* Clear the control byte. */ 5654 ahd_outb(ahd, SCB_CONTROL, 0); 5655 5656 /* Set the next pointer */ 5657 ahd_outw(ahd, SCB_NEXT, SCB_LIST_NULL); 5658 } 5659} 5660 5661static int 5662ahd_init_scbdata(struct ahd_softc *ahd) 5663{ 5664 struct scb_data *scb_data; 5665 int i; 5666 5667 scb_data = &ahd->scb_data; 5668 TAILQ_INIT(&scb_data->free_scbs); 5669 for (i = 0; i < AHD_NUM_TARGETS * AHD_NUM_LUNS_NONPKT; i++) 5670 LIST_INIT(&scb_data->free_scb_lists[i]); 5671 LIST_INIT(&scb_data->any_dev_free_scb_list); 5672 SLIST_INIT(&scb_data->hscb_maps); 5673 SLIST_INIT(&scb_data->sg_maps); 5674 SLIST_INIT(&scb_data->sense_maps); 5675 5676 /* Determine the number of hardware SCBs and initialize them */ 5677 scb_data->maxhscbs = ahd_probe_scbs(ahd); 5678 if (scb_data->maxhscbs == 0) { 5679 printf("%s: No SCB space found\n", ahd_name(ahd)); 5680 AHD_FATAL_ERROR(ahd); 5681 return (ENXIO); 5682 } 5683 5684 ahd_initialize_hscbs(ahd); 5685 5686 /* 5687 * Create our DMA tags. These tags define the kinds of device 5688 * accessible memory allocations and memory mappings we will 5689 * need to perform during normal operation. 5690 * 5691 * Unless we need to further restrict the allocation, we rely 5692 * on the restrictions of the parent dmat, hence the common 5693 * use of MAXADDR and MAXSIZE. 5694 */ 5695 5696 /* DMA tag for our hardware scb structures */ 5697 if (aic_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, 5698 /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, 5699 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 5700 /*highaddr*/BUS_SPACE_MAXADDR, 5701 /*filter*/NULL, /*filterarg*/NULL, 5702 PAGE_SIZE, /*nsegments*/1, 5703 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 5704 /*flags*/0, &scb_data->hscb_dmat) != 0) { 5705 goto error_exit; 5706 } 5707 5708 scb_data->init_level++; 5709 5710 /* DMA tag for our S/G structures. */ 5711 if (aic_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/8, 5712 /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, 5713 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 5714 /*highaddr*/BUS_SPACE_MAXADDR, 5715 /*filter*/NULL, /*filterarg*/NULL, 5716 ahd_sglist_allocsize(ahd), /*nsegments*/1, 5717 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 5718 /*flags*/0, &scb_data->sg_dmat) != 0) { 5719 goto error_exit; 5720 } 5721#ifdef AHD_DEBUG 5722 if ((ahd_debug & AHD_SHOW_MEMORY) != 0) 5723 printf("%s: ahd_sglist_allocsize = 0x%x\n", ahd_name(ahd), 5724 ahd_sglist_allocsize(ahd)); 5725#endif 5726 5727 scb_data->init_level++; 5728 5729 /* DMA tag for our sense buffers. We allocate in page sized chunks */ 5730 if (aic_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, 5731 /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, 5732 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 5733 /*highaddr*/BUS_SPACE_MAXADDR, 5734 /*filter*/NULL, /*filterarg*/NULL, 5735 PAGE_SIZE, /*nsegments*/1, 5736 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 5737 /*flags*/0, &scb_data->sense_dmat) != 0) { 5738 goto error_exit; 5739 } 5740 5741 scb_data->init_level++; 5742 5743 /* Perform initial CCB allocation */ 5744 while (ahd_alloc_scbs(ahd) != 0) 5745 ; 5746 5747 if (scb_data->numscbs == 0) { 5748 printf("%s: ahd_init_scbdata - " 5749 "Unable to allocate initial scbs\n", 5750 ahd_name(ahd)); 5751 goto error_exit; 5752 } 5753 5754 /* 5755 * Note that we were successfull 5756 */ 5757 return (0); 5758 5759error_exit: 5760 5761 return (ENOMEM); 5762} 5763 5764static struct scb * 5765ahd_find_scb_by_tag(struct ahd_softc *ahd, u_int tag) 5766{ 5767 struct scb *scb; 5768 5769 /* 5770 * Look on the pending list. 5771 */ 5772 LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { 5773 if (SCB_GET_TAG(scb) == tag) 5774 return (scb); 5775 } 5776 5777 /* 5778 * Then on all of the collision free lists. 5779 */ 5780 TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) { 5781 struct scb *list_scb; 5782 5783 list_scb = scb; 5784 do { 5785 if (SCB_GET_TAG(list_scb) == tag) 5786 return (list_scb); 5787 list_scb = LIST_NEXT(list_scb, collision_links); 5788 } while (list_scb); 5789 } 5790 5791 /* 5792 * And finally on the generic free list. 5793 */ 5794 LIST_FOREACH(scb, &ahd->scb_data.any_dev_free_scb_list, links.le) { 5795 if (SCB_GET_TAG(scb) == tag) 5796 return (scb); 5797 } 5798 5799 return (NULL); 5800} 5801 5802static void 5803ahd_fini_scbdata(struct ahd_softc *ahd) 5804{ 5805 struct scb_data *scb_data; 5806 5807 scb_data = &ahd->scb_data; 5808 if (scb_data == NULL) 5809 return; 5810 5811 switch (scb_data->init_level) { 5812 default: 5813 case 7: 5814 { 5815 struct map_node *sns_map; 5816 5817 while ((sns_map = SLIST_FIRST(&scb_data->sense_maps)) != NULL) { 5818 SLIST_REMOVE_HEAD(&scb_data->sense_maps, links); 5819 aic_dmamap_unload(ahd, scb_data->sense_dmat, 5820 sns_map->dmamap); 5821 aic_dmamem_free(ahd, scb_data->sense_dmat, 5822 sns_map->vaddr, sns_map->dmamap); 5823 free(sns_map, M_DEVBUF); 5824 } 5825 aic_dma_tag_destroy(ahd, scb_data->sense_dmat); 5826 /* FALLTHROUGH */ 5827 } 5828 case 6: 5829 { 5830 struct map_node *sg_map; 5831 5832 while ((sg_map = SLIST_FIRST(&scb_data->sg_maps)) != NULL) { 5833 SLIST_REMOVE_HEAD(&scb_data->sg_maps, links); 5834 aic_dmamap_unload(ahd, scb_data->sg_dmat, 5835 sg_map->dmamap); 5836 aic_dmamem_free(ahd, scb_data->sg_dmat, 5837 sg_map->vaddr, sg_map->dmamap); 5838 free(sg_map, M_DEVBUF); 5839 } 5840 aic_dma_tag_destroy(ahd, scb_data->sg_dmat); 5841 /* FALLTHROUGH */ 5842 } 5843 case 5: 5844 { 5845 struct map_node *hscb_map; 5846 5847 while ((hscb_map = SLIST_FIRST(&scb_data->hscb_maps)) != NULL) { 5848 SLIST_REMOVE_HEAD(&scb_data->hscb_maps, links); 5849 aic_dmamap_unload(ahd, scb_data->hscb_dmat, 5850 hscb_map->dmamap); 5851 aic_dmamem_free(ahd, scb_data->hscb_dmat, 5852 hscb_map->vaddr, hscb_map->dmamap); 5853 free(hscb_map, M_DEVBUF); 5854 } 5855 aic_dma_tag_destroy(ahd, scb_data->hscb_dmat); 5856 /* FALLTHROUGH */ 5857 } 5858 case 4: 5859 case 3: 5860 case 2: 5861 case 1: 5862 case 0: 5863 break; 5864 } 5865} 5866 5867/* 5868 * DSP filter Bypass must be enabled until the first selection 5869 * after a change in bus mode (Razor #491 and #493). 5870 */ 5871static void 5872ahd_setup_iocell_workaround(struct ahd_softc *ahd) 5873{ 5874 ahd_mode_state saved_modes; 5875 5876 saved_modes = ahd_save_modes(ahd); 5877 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 5878 ahd_outb(ahd, DSPDATACTL, ahd_inb(ahd, DSPDATACTL) 5879 | BYPASSENAB | RCVROFFSTDIS | XMITOFFSTDIS); 5880 ahd_outb(ahd, SIMODE0, ahd_inb(ahd, SIMODE0) | (ENSELDO|ENSELDI)); 5881#ifdef AHD_DEBUG 5882 if ((ahd_debug & AHD_SHOW_MISC) != 0) 5883 printf("%s: Setting up iocell workaround\n", ahd_name(ahd)); 5884#endif 5885 ahd_restore_modes(ahd, saved_modes); 5886 ahd->flags &= ~AHD_HAD_FIRST_SEL; 5887} 5888 5889static void 5890ahd_iocell_first_selection(struct ahd_softc *ahd) 5891{ 5892 ahd_mode_state saved_modes; 5893 u_int sblkctl; 5894 5895 if ((ahd->flags & AHD_HAD_FIRST_SEL) != 0) 5896 return; 5897 saved_modes = ahd_save_modes(ahd); 5898 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 5899 sblkctl = ahd_inb(ahd, SBLKCTL); 5900 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 5901#ifdef AHD_DEBUG 5902 if ((ahd_debug & AHD_SHOW_MISC) != 0) 5903 printf("%s: iocell first selection\n", ahd_name(ahd)); 5904#endif 5905 if ((sblkctl & ENAB40) != 0) { 5906 ahd_outb(ahd, DSPDATACTL, 5907 ahd_inb(ahd, DSPDATACTL) & ~BYPASSENAB); 5908#ifdef AHD_DEBUG 5909 if ((ahd_debug & AHD_SHOW_MISC) != 0) 5910 printf("%s: BYPASS now disabled\n", ahd_name(ahd)); 5911#endif 5912 } 5913 ahd_outb(ahd, SIMODE0, ahd_inb(ahd, SIMODE0) & ~(ENSELDO|ENSELDI)); 5914 ahd_outb(ahd, CLRINT, CLRSCSIINT); 5915 ahd_restore_modes(ahd, saved_modes); 5916 ahd->flags |= AHD_HAD_FIRST_SEL; 5917} 5918 5919/*************************** SCB Management ***********************************/ 5920static void 5921ahd_add_col_list(struct ahd_softc *ahd, struct scb *scb, u_int col_idx) 5922{ 5923 struct scb_list *free_list; 5924 struct scb_tailq *free_tailq; 5925 struct scb *first_scb; 5926 5927 scb->flags |= SCB_ON_COL_LIST; 5928 AHD_SET_SCB_COL_IDX(scb, col_idx); 5929 free_list = &ahd->scb_data.free_scb_lists[col_idx]; 5930 free_tailq = &ahd->scb_data.free_scbs; 5931 first_scb = LIST_FIRST(free_list); 5932 if (first_scb != NULL) { 5933 LIST_INSERT_AFTER(first_scb, scb, collision_links); 5934 } else { 5935 LIST_INSERT_HEAD(free_list, scb, collision_links); 5936 TAILQ_INSERT_TAIL(free_tailq, scb, links.tqe); 5937 } 5938} 5939 5940static void 5941ahd_rem_col_list(struct ahd_softc *ahd, struct scb *scb) 5942{ 5943 struct scb_list *free_list; 5944 struct scb_tailq *free_tailq; 5945 struct scb *first_scb; 5946 u_int col_idx; 5947 5948 scb->flags &= ~SCB_ON_COL_LIST; 5949 col_idx = AHD_GET_SCB_COL_IDX(ahd, scb); 5950 free_list = &ahd->scb_data.free_scb_lists[col_idx]; 5951 free_tailq = &ahd->scb_data.free_scbs; 5952 first_scb = LIST_FIRST(free_list); 5953 if (first_scb == scb) { 5954 struct scb *next_scb; 5955 5956 /* 5957 * Maintain order in the collision free 5958 * lists for fairness if this device has 5959 * other colliding tags active. 5960 */ 5961 next_scb = LIST_NEXT(scb, collision_links); 5962 if (next_scb != NULL) { 5963 TAILQ_INSERT_AFTER(free_tailq, scb, 5964 next_scb, links.tqe); 5965 } 5966 TAILQ_REMOVE(free_tailq, scb, links.tqe); 5967 } 5968 LIST_REMOVE(scb, collision_links); 5969} 5970 5971/* 5972 * Get a free scb. If there are none, see if we can allocate a new SCB. 5973 */ 5974struct scb * 5975ahd_get_scb(struct ahd_softc *ahd, u_int col_idx) 5976{ 5977 struct scb *scb; 5978 int tries; 5979 5980 tries = 0; 5981look_again: 5982 TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) { 5983 if (AHD_GET_SCB_COL_IDX(ahd, scb) != col_idx) { 5984 ahd_rem_col_list(ahd, scb); 5985 goto found; 5986 } 5987 } 5988 if ((scb = LIST_FIRST(&ahd->scb_data.any_dev_free_scb_list)) == NULL) { 5989 5990 if (tries++ != 0) 5991 return (NULL); 5992 if (ahd_alloc_scbs(ahd) == 0) 5993 return (NULL); 5994 goto look_again; 5995 } 5996 LIST_REMOVE(scb, links.le); 5997 if (col_idx != AHD_NEVER_COL_IDX 5998 && (scb->col_scb != NULL) 5999 && (scb->col_scb->flags & SCB_ACTIVE) == 0) { 6000 LIST_REMOVE(scb->col_scb, links.le); 6001 ahd_add_col_list(ahd, scb->col_scb, col_idx); 6002 } 6003found: 6004 scb->flags |= SCB_ACTIVE; 6005 return (scb); 6006} 6007 6008/* 6009 * Return an SCB resource to the free list. 6010 */ 6011void 6012ahd_free_scb(struct ahd_softc *ahd, struct scb *scb) 6013{ 6014 6015 /* Clean up for the next user */ 6016 scb->flags = SCB_FLAG_NONE; 6017 scb->hscb->control = 0; 6018 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = NULL; 6019 6020 if (scb->col_scb == NULL) { 6021 6022 /* 6023 * No collision possible. Just free normally. 6024 */ 6025 LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list, 6026 scb, links.le); 6027 } else if ((scb->col_scb->flags & SCB_ON_COL_LIST) != 0) { 6028 6029 /* 6030 * The SCB we might have collided with is on 6031 * a free collision list. Put both SCBs on 6032 * the generic list. 6033 */ 6034 ahd_rem_col_list(ahd, scb->col_scb); 6035 LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list, 6036 scb, links.le); 6037 LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list, 6038 scb->col_scb, links.le); 6039 } else if ((scb->col_scb->flags 6040 & (SCB_PACKETIZED|SCB_ACTIVE)) == SCB_ACTIVE 6041 && (scb->col_scb->hscb->control & TAG_ENB) != 0) { 6042 6043 /* 6044 * The SCB we might collide with on the next allocation 6045 * is still active in a non-packetized, tagged, context. 6046 * Put us on the SCB collision list. 6047 */ 6048 ahd_add_col_list(ahd, scb, 6049 AHD_GET_SCB_COL_IDX(ahd, scb->col_scb)); 6050 } else { 6051 /* 6052 * The SCB we might collide with on the next allocation 6053 * is either active in a packetized context, or free. 6054 * Since we can't collide, put this SCB on the generic 6055 * free list. 6056 */ 6057 LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list, 6058 scb, links.le); 6059 } 6060 6061 aic_platform_scb_free(ahd, scb); 6062} 6063 6064int 6065ahd_alloc_scbs(struct ahd_softc *ahd) 6066{ 6067 struct scb_data *scb_data; 6068 struct scb *next_scb; 6069 struct hardware_scb *hscb; 6070 struct map_node *hscb_map; 6071 struct map_node *sg_map; 6072 struct map_node *sense_map; 6073 uint8_t *segs; 6074 uint8_t *sense_data; 6075 bus_addr_t hscb_busaddr; 6076 bus_addr_t sg_busaddr; 6077 bus_addr_t sense_busaddr; 6078 int newcount; 6079 int i; 6080 6081 scb_data = &ahd->scb_data; 6082 if (scb_data->numscbs >= AHD_SCB_MAX_ALLOC) 6083 /* Can't allocate any more */ 6084 return (0); 6085 6086 if (scb_data->scbs_left != 0) { 6087 int offset; 6088 6089 offset = (PAGE_SIZE / sizeof(*hscb)) - scb_data->scbs_left; 6090 hscb_map = SLIST_FIRST(&scb_data->hscb_maps); 6091 hscb = &((struct hardware_scb *)hscb_map->vaddr)[offset]; 6092 hscb_busaddr = hscb_map->busaddr + (offset * sizeof(*hscb)); 6093 } else { 6094 hscb_map = malloc(sizeof(*hscb_map), M_DEVBUF, M_NOWAIT); 6095 6096 if (hscb_map == NULL) 6097 return (0); 6098 6099 /* Allocate the next batch of hardware SCBs */ 6100 if (aic_dmamem_alloc(ahd, scb_data->hscb_dmat, 6101 (void **)&hscb_map->vaddr, 6102 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, 6103 &hscb_map->dmamap) != 0) { 6104 free(hscb_map, M_DEVBUF); 6105 return (0); 6106 } 6107 6108 SLIST_INSERT_HEAD(&scb_data->hscb_maps, hscb_map, links); 6109 6110 aic_dmamap_load(ahd, scb_data->hscb_dmat, hscb_map->dmamap, 6111 hscb_map->vaddr, PAGE_SIZE, ahd_dmamap_cb, 6112 &hscb_map->busaddr, /*flags*/0); 6113 6114 hscb = (struct hardware_scb *)hscb_map->vaddr; 6115 hscb_busaddr = hscb_map->busaddr; 6116 scb_data->scbs_left = PAGE_SIZE / sizeof(*hscb); 6117 } 6118 6119 if (scb_data->sgs_left != 0) { 6120 int offset; 6121 6122 offset = ((ahd_sglist_allocsize(ahd) / ahd_sglist_size(ahd)) 6123 - scb_data->sgs_left) * ahd_sglist_size(ahd); 6124 sg_map = SLIST_FIRST(&scb_data->sg_maps); 6125 segs = sg_map->vaddr + offset; 6126 sg_busaddr = sg_map->busaddr + offset; 6127 } else { 6128 sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT); 6129 6130 if (sg_map == NULL) 6131 return (0); 6132 6133 /* Allocate the next batch of S/G lists */ 6134 if (aic_dmamem_alloc(ahd, scb_data->sg_dmat, 6135 (void **)&sg_map->vaddr, 6136 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, 6137 &sg_map->dmamap) != 0) { 6138 free(sg_map, M_DEVBUF); 6139 return (0); 6140 } 6141 6142 SLIST_INSERT_HEAD(&scb_data->sg_maps, sg_map, links); 6143 6144 aic_dmamap_load(ahd, scb_data->sg_dmat, sg_map->dmamap, 6145 sg_map->vaddr, ahd_sglist_allocsize(ahd), 6146 ahd_dmamap_cb, &sg_map->busaddr, /*flags*/0); 6147 6148 segs = sg_map->vaddr; 6149 sg_busaddr = sg_map->busaddr; 6150 scb_data->sgs_left = 6151 ahd_sglist_allocsize(ahd) / ahd_sglist_size(ahd); 6152#ifdef AHD_DEBUG 6153 if (ahd_debug & AHD_SHOW_MEMORY) 6154 printf("Mapped SG data\n"); 6155#endif 6156 } 6157 6158 if (scb_data->sense_left != 0) { 6159 int offset; 6160 6161 offset = PAGE_SIZE - (AHD_SENSE_BUFSIZE * scb_data->sense_left); 6162 sense_map = SLIST_FIRST(&scb_data->sense_maps); 6163 sense_data = sense_map->vaddr + offset; 6164 sense_busaddr = sense_map->busaddr + offset; 6165 } else { 6166 sense_map = malloc(sizeof(*sense_map), M_DEVBUF, M_NOWAIT); 6167 6168 if (sense_map == NULL) 6169 return (0); 6170 6171 /* Allocate the next batch of sense buffers */ 6172 if (aic_dmamem_alloc(ahd, scb_data->sense_dmat, 6173 (void **)&sense_map->vaddr, 6174 BUS_DMA_NOWAIT, &sense_map->dmamap) != 0) { 6175 free(sense_map, M_DEVBUF); 6176 return (0); 6177 } 6178 6179 SLIST_INSERT_HEAD(&scb_data->sense_maps, sense_map, links); 6180 6181 aic_dmamap_load(ahd, scb_data->sense_dmat, sense_map->dmamap, 6182 sense_map->vaddr, PAGE_SIZE, ahd_dmamap_cb, 6183 &sense_map->busaddr, /*flags*/0); 6184 6185 sense_data = sense_map->vaddr; 6186 sense_busaddr = sense_map->busaddr; 6187 scb_data->sense_left = PAGE_SIZE / AHD_SENSE_BUFSIZE; 6188#ifdef AHD_DEBUG 6189 if (ahd_debug & AHD_SHOW_MEMORY) 6190 printf("Mapped sense data\n"); 6191#endif 6192 } 6193 6194 newcount = MIN(scb_data->sense_left, scb_data->scbs_left); 6195 newcount = MIN(newcount, scb_data->sgs_left); 6196 newcount = MIN(newcount, (AHD_SCB_MAX_ALLOC - scb_data->numscbs)); 6197 scb_data->sense_left -= newcount; 6198 scb_data->scbs_left -= newcount; 6199 scb_data->sgs_left -= newcount; 6200 for (i = 0; i < newcount; i++) { 6201 struct scb_platform_data *pdata; 6202 u_int col_tag; 6203#ifndef __linux__ 6204 int error; 6205#endif 6206 6207 next_scb = (struct scb *)malloc(sizeof(*next_scb), 6208 M_DEVBUF, M_NOWAIT); 6209 if (next_scb == NULL) 6210 break; 6211 6212 pdata = (struct scb_platform_data *)malloc(sizeof(*pdata), 6213 M_DEVBUF, M_NOWAIT); 6214 if (pdata == NULL) { 6215 free(next_scb, M_DEVBUF); 6216 break; 6217 } 6218 next_scb->platform_data = pdata; 6219 next_scb->hscb_map = hscb_map; 6220 next_scb->sg_map = sg_map; 6221 next_scb->sense_map = sense_map; 6222 next_scb->sg_list = segs; 6223 next_scb->sense_data = sense_data; 6224 next_scb->sense_busaddr = sense_busaddr; 6225 memset(hscb, 0, sizeof(*hscb)); 6226 next_scb->hscb = hscb; 6227 hscb->hscb_busaddr = aic_htole32(hscb_busaddr); 6228 6229 /* 6230 * The sequencer always starts with the second entry. 6231 * The first entry is embedded in the scb. 6232 */ 6233 next_scb->sg_list_busaddr = sg_busaddr; 6234 if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) 6235 next_scb->sg_list_busaddr 6236 += sizeof(struct ahd_dma64_seg); 6237 else 6238 next_scb->sg_list_busaddr += sizeof(struct ahd_dma_seg); 6239 next_scb->ahd_softc = ahd; 6240 next_scb->flags = SCB_FLAG_NONE; 6241#ifndef __linux__ 6242 error = aic_dmamap_create(ahd, ahd->buffer_dmat, /*flags*/0, 6243 &next_scb->dmamap); 6244 if (error != 0) { 6245 free(next_scb, M_DEVBUF); 6246 free(pdata, M_DEVBUF); 6247 break; 6248 } 6249#endif 6250 next_scb->hscb->tag = aic_htole16(scb_data->numscbs); 6251 col_tag = scb_data->numscbs ^ 0x100; 6252 next_scb->col_scb = ahd_find_scb_by_tag(ahd, col_tag); 6253 if (next_scb->col_scb != NULL) 6254 next_scb->col_scb->col_scb = next_scb; 6255 aic_timer_init(&next_scb->io_timer); 6256 ahd_free_scb(ahd, next_scb); 6257 hscb++; 6258 hscb_busaddr += sizeof(*hscb); 6259 segs += ahd_sglist_size(ahd); 6260 sg_busaddr += ahd_sglist_size(ahd); 6261 sense_data += AHD_SENSE_BUFSIZE; 6262 sense_busaddr += AHD_SENSE_BUFSIZE; 6263 scb_data->numscbs++; 6264 } 6265 return (i); 6266} 6267 6268void 6269ahd_controller_info(struct ahd_softc *ahd, char *buf) 6270{ 6271 const char *speed; 6272 const char *type; 6273 int len; 6274 6275 len = sprintf(buf, "%s: ", ahd_chip_names[ahd->chip & AHD_CHIPID_MASK]); 6276 buf += len; 6277 6278 speed = "Ultra320 "; 6279 if ((ahd->features & AHD_WIDE) != 0) { 6280 type = "Wide "; 6281 } else { 6282 type = "Single "; 6283 } 6284 len = sprintf(buf, "%s%sChannel %c, SCSI Id=%d, ", 6285 speed, type, ahd->channel, ahd->our_id); 6286 buf += len; 6287 6288 sprintf(buf, "%s, %d SCBs", ahd->bus_description, 6289 ahd->scb_data.maxhscbs); 6290} 6291 6292static const char *channel_strings[] = { 6293 "Primary Low", 6294 "Primary High", 6295 "Secondary Low", 6296 "Secondary High" 6297}; 6298 6299static const char *termstat_strings[] = { 6300 "Terminated Correctly", 6301 "Over Terminated", 6302 "Under Terminated", 6303 "Not Configured" 6304}; 6305 6306/* 6307 * Start the board, ready for normal operation 6308 */ 6309int 6310ahd_init(struct ahd_softc *ahd) 6311{ 6312 uint8_t *next_vaddr; 6313 bus_addr_t next_baddr; 6314 size_t driver_data_size; 6315 int i; 6316 int error; 6317 u_int warn_user; 6318 uint8_t current_sensing; 6319 uint8_t fstat; 6320 6321 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 6322 6323 ahd->stack_size = ahd_probe_stack_size(ahd); 6324 ahd->saved_stack = malloc(ahd->stack_size * sizeof(uint16_t), 6325 M_DEVBUF, M_NOWAIT); 6326 if (ahd->saved_stack == NULL) 6327 return (ENOMEM); 6328 6329 /* 6330 * Verify that the compiler hasn't over-agressively 6331 * padded important structures. 6332 */ 6333 if (sizeof(struct hardware_scb) != 64) 6334 panic("Hardware SCB size is incorrect"); 6335 6336#ifdef AHD_DEBUG 6337 if ((ahd_debug & AHD_DEBUG_SEQUENCER) != 0) 6338 ahd->flags |= AHD_SEQUENCER_DEBUG; 6339#endif 6340 6341 /* 6342 * Default to allowing initiator operations. 6343 */ 6344 ahd->flags |= AHD_INITIATORROLE; 6345 6346 /* 6347 * Only allow target mode features if this unit has them enabled. 6348 */ 6349 if ((AHD_TMODE_ENABLE & (0x1 << ahd->unit)) == 0) 6350 ahd->features &= ~AHD_TARGETMODE; 6351 6352#ifndef __linux__ 6353 /* DMA tag for mapping buffers into device visible space. */ 6354 if (aic_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, 6355 /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, 6356 /*lowaddr*/ahd->flags & AHD_39BIT_ADDRESSING 6357 ? (bus_addr_t)0x7FFFFFFFFFULL 6358 : BUS_SPACE_MAXADDR_32BIT, 6359 /*highaddr*/BUS_SPACE_MAXADDR, 6360 /*filter*/NULL, /*filterarg*/NULL, 6361 /*maxsize*/(AHD_NSEG - 1) * PAGE_SIZE, 6362 /*nsegments*/AHD_NSEG, 6363 /*maxsegsz*/AHD_MAXTRANSFER_SIZE, 6364 /*flags*/BUS_DMA_ALLOCNOW, 6365 &ahd->buffer_dmat) != 0) { 6366 return (ENOMEM); 6367 } 6368#endif 6369 6370 ahd->init_level++; 6371 6372 /* 6373 * DMA tag for our command fifos and other data in system memory 6374 * the card's sequencer must be able to access. For initiator 6375 * roles, we need to allocate space for the qoutfifo. When providing 6376 * for the target mode role, we must additionally provide space for 6377 * the incoming target command fifo. 6378 */ 6379 driver_data_size = AHD_SCB_MAX * sizeof(*ahd->qoutfifo) 6380 + sizeof(struct hardware_scb); 6381 if ((ahd->features & AHD_TARGETMODE) != 0) 6382 driver_data_size += AHD_TMODE_CMDS * sizeof(struct target_cmd); 6383 if ((ahd->bugs & AHD_PKT_BITBUCKET_BUG) != 0) 6384 driver_data_size += PKT_OVERRUN_BUFSIZE; 6385 if (aic_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, 6386 /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, 6387 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 6388 /*highaddr*/BUS_SPACE_MAXADDR, 6389 /*filter*/NULL, /*filterarg*/NULL, 6390 driver_data_size, 6391 /*nsegments*/1, 6392 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 6393 /*flags*/0, &ahd->shared_data_dmat) != 0) { 6394 return (ENOMEM); 6395 } 6396 6397 ahd->init_level++; 6398 6399 /* Allocation of driver data */ 6400 if (aic_dmamem_alloc(ahd, ahd->shared_data_dmat, 6401 (void **)&ahd->shared_data_map.vaddr, 6402 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, 6403 &ahd->shared_data_map.dmamap) != 0) { 6404 return (ENOMEM); 6405 } 6406 6407 ahd->init_level++; 6408 6409 /* And permanently map it in */ 6410 aic_dmamap_load(ahd, ahd->shared_data_dmat, ahd->shared_data_map.dmamap, 6411 ahd->shared_data_map.vaddr, driver_data_size, 6412 ahd_dmamap_cb, &ahd->shared_data_map.busaddr, 6413 /*flags*/0); 6414 ahd->qoutfifo = (struct ahd_completion *)ahd->shared_data_map.vaddr; 6415 next_vaddr = (uint8_t *)&ahd->qoutfifo[AHD_QOUT_SIZE]; 6416 next_baddr = ahd->shared_data_map.busaddr 6417 + AHD_QOUT_SIZE*sizeof(struct ahd_completion); 6418 if ((ahd->features & AHD_TARGETMODE) != 0) { 6419 ahd->targetcmds = (struct target_cmd *)next_vaddr; 6420 next_vaddr += AHD_TMODE_CMDS * sizeof(struct target_cmd); 6421 next_baddr += AHD_TMODE_CMDS * sizeof(struct target_cmd); 6422 } 6423 6424 if ((ahd->bugs & AHD_PKT_BITBUCKET_BUG) != 0) { 6425 ahd->overrun_buf = next_vaddr; 6426 next_vaddr += PKT_OVERRUN_BUFSIZE; 6427 next_baddr += PKT_OVERRUN_BUFSIZE; 6428 } 6429 6430 /* 6431 * We need one SCB to serve as the "next SCB". Since the 6432 * tag identifier in this SCB will never be used, there is 6433 * no point in using a valid HSCB tag from an SCB pulled from 6434 * the standard free pool. So, we allocate this "sentinel" 6435 * specially from the DMA safe memory chunk used for the QOUTFIFO. 6436 */ 6437 ahd->next_queued_hscb = (struct hardware_scb *)next_vaddr; 6438 ahd->next_queued_hscb_map = &ahd->shared_data_map; 6439 ahd->next_queued_hscb->hscb_busaddr = aic_htole32(next_baddr); 6440 6441 ahd->init_level++; 6442 6443 /* Allocate SCB data now that buffer_dmat is initialized */ 6444 if (ahd_init_scbdata(ahd) != 0) 6445 return (ENOMEM); 6446 6447 if ((ahd->flags & AHD_INITIATORROLE) == 0) 6448 ahd->flags &= ~AHD_RESET_BUS_A; 6449 6450 /* 6451 * Before committing these settings to the chip, give 6452 * the OSM one last chance to modify our configuration. 6453 */ 6454 ahd_platform_init(ahd); 6455 6456 /* Bring up the chip. */ 6457 ahd_chip_init(ahd); 6458 6459 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 6460 6461 if ((ahd->flags & AHD_CURRENT_SENSING) == 0) 6462 goto init_done; 6463 6464 /* 6465 * Verify termination based on current draw and 6466 * warn user if the bus is over/under terminated. 6467 */ 6468 error = ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 6469 CURSENSE_ENB); 6470 if (error != 0) { 6471 printf("%s: current sensing timeout 1\n", ahd_name(ahd)); 6472 goto init_done; 6473 } 6474 for (i = 20, fstat = FLX_FSTAT_BUSY; 6475 (fstat & FLX_FSTAT_BUSY) != 0 && i; i--) { 6476 error = ahd_read_flexport(ahd, FLXADDR_FLEXSTAT, &fstat); 6477 if (error != 0) { 6478 printf("%s: current sensing timeout 2\n", 6479 ahd_name(ahd)); 6480 goto init_done; 6481 } 6482 } 6483 if (i == 0) { 6484 printf("%s: Timedout during current-sensing test\n", 6485 ahd_name(ahd)); 6486 goto init_done; 6487 } 6488 6489 /* Latch Current Sensing status. */ 6490 error = ahd_read_flexport(ahd, FLXADDR_CURRENT_STAT, ¤t_sensing); 6491 if (error != 0) { 6492 printf("%s: current sensing timeout 3\n", ahd_name(ahd)); 6493 goto init_done; 6494 } 6495 6496 /* Diable current sensing. */ 6497 ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0); 6498 6499#ifdef AHD_DEBUG 6500 if ((ahd_debug & AHD_SHOW_TERMCTL) != 0) { 6501 printf("%s: current_sensing == 0x%x\n", 6502 ahd_name(ahd), current_sensing); 6503 } 6504#endif 6505 warn_user = 0; 6506 for (i = 0; i < 4; i++, current_sensing >>= FLX_CSTAT_SHIFT) { 6507 u_int term_stat; 6508 6509 term_stat = (current_sensing & FLX_CSTAT_MASK); 6510 switch (term_stat) { 6511 case FLX_CSTAT_OVER: 6512 case FLX_CSTAT_UNDER: 6513 warn_user++; 6514 case FLX_CSTAT_INVALID: 6515 case FLX_CSTAT_OKAY: 6516 if (warn_user == 0 && bootverbose == 0) 6517 break; 6518 printf("%s: %s Channel %s\n", ahd_name(ahd), 6519 channel_strings[i], termstat_strings[term_stat]); 6520 break; 6521 } 6522 } 6523 if (warn_user) { 6524 printf("%s: WARNING. Termination is not configured correctly.\n" 6525 "%s: WARNING. SCSI bus operations may FAIL.\n", 6526 ahd_name(ahd), ahd_name(ahd)); 6527 AHD_CORRECTABLE_ERROR(ahd); 6528 } 6529init_done: 6530 ahd_restart(ahd); 6531 aic_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_MS, 6532 ahd_stat_timer, ahd); 6533 return (0); 6534} 6535 6536/* 6537 * (Re)initialize chip state after a chip reset. 6538 */ 6539static void 6540ahd_chip_init(struct ahd_softc *ahd) 6541{ 6542 uint32_t busaddr; 6543 u_int sxfrctl1; 6544 u_int scsiseq_template; 6545 u_int wait; 6546 u_int i; 6547 u_int target; 6548 6549 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 6550 /* 6551 * Take the LED out of diagnostic mode 6552 */ 6553 ahd_outb(ahd, SBLKCTL, ahd_inb(ahd, SBLKCTL) & ~(DIAGLEDEN|DIAGLEDON)); 6554 6555 /* 6556 * Return HS_MAILBOX to its default value. 6557 */ 6558 ahd->hs_mailbox = 0; 6559 ahd_outb(ahd, HS_MAILBOX, 0); 6560 6561 /* Set the SCSI Id, SXFRCTL0, SXFRCTL1, and SIMODE1. */ 6562 ahd_outb(ahd, IOWNID, ahd->our_id); 6563 ahd_outb(ahd, TOWNID, ahd->our_id); 6564 sxfrctl1 = (ahd->flags & AHD_TERM_ENB_A) != 0 ? STPWEN : 0; 6565 sxfrctl1 |= (ahd->flags & AHD_SPCHK_ENB_A) != 0 ? ENSPCHK : 0; 6566 if ((ahd->bugs & AHD_LONG_SETIMO_BUG) 6567 && (ahd->seltime != STIMESEL_MIN)) { 6568 /* 6569 * The selection timer duration is twice as long 6570 * as it should be. Halve it by adding "1" to 6571 * the user specified setting. 6572 */ 6573 sxfrctl1 |= ahd->seltime + STIMESEL_BUG_ADJ; 6574 } else { 6575 sxfrctl1 |= ahd->seltime; 6576 } 6577 6578 ahd_outb(ahd, SXFRCTL0, DFON); 6579 ahd_outb(ahd, SXFRCTL1, sxfrctl1|ahd->seltime|ENSTIMER|ACTNEGEN); 6580 ahd_outb(ahd, SIMODE1, ENSELTIMO|ENSCSIRST|ENSCSIPERR); 6581 6582 /* 6583 * Now that termination is set, wait for up 6584 * to 500ms for our transceivers to settle. If 6585 * the adapter does not have a cable attached, 6586 * the transceivers may never settle, so don't 6587 * complain if we fail here. 6588 */ 6589 for (wait = 10000; 6590 (ahd_inb(ahd, SBLKCTL) & (ENAB40|ENAB20)) == 0 && wait; 6591 wait--) 6592 aic_delay(100); 6593 6594 /* Clear any false bus resets due to the transceivers settling */ 6595 ahd_outb(ahd, CLRSINT1, CLRSCSIRSTI); 6596 ahd_outb(ahd, CLRINT, CLRSCSIINT); 6597 6598 /* Initialize mode specific S/G state. */ 6599 for (i = 0; i < 2; i++) { 6600 ahd_set_modes(ahd, AHD_MODE_DFF0 + i, AHD_MODE_DFF0 + i); 6601 ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR); 6602 ahd_outb(ahd, SG_STATE, 0); 6603 ahd_outb(ahd, CLRSEQINTSRC, 0xFF); 6604 ahd_outb(ahd, SEQIMODE, 6605 ENSAVEPTRS|ENCFG4DATA|ENCFG4ISTAT 6606 |ENCFG4TSTAT|ENCFG4ICMD|ENCFG4TCMD); 6607 } 6608 6609 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 6610 ahd_outb(ahd, DSCOMMAND0, ahd_inb(ahd, DSCOMMAND0)|MPARCKEN|CACHETHEN); 6611 ahd_outb(ahd, DFF_THRSH, RD_DFTHRSH_75|WR_DFTHRSH_75); 6612 ahd_outb(ahd, SIMODE0, ENIOERR|ENOVERRUN); 6613 ahd_outb(ahd, SIMODE3, ENNTRAMPERR|ENOSRAMPERR); 6614 if ((ahd->bugs & AHD_BUSFREEREV_BUG) != 0) { 6615 ahd_outb(ahd, OPTIONMODE, AUTOACKEN|AUTO_MSGOUT_DE); 6616 } else { 6617 ahd_outb(ahd, OPTIONMODE, AUTOACKEN|BUSFREEREV|AUTO_MSGOUT_DE); 6618 } 6619 ahd_outb(ahd, SCSCHKN, CURRFIFODEF|WIDERESEN|SHVALIDSTDIS); 6620 if ((ahd->chip & AHD_BUS_MASK) == AHD_PCIX) 6621 /* 6622 * Do not issue a target abort when a split completion 6623 * error occurs. Let our PCIX interrupt handler deal 6624 * with it instead. H2A4 Razor #625 6625 */ 6626 ahd_outb(ahd, PCIXCTL, ahd_inb(ahd, PCIXCTL) | SPLTSTADIS); 6627 6628 if ((ahd->bugs & AHD_LQOOVERRUN_BUG) != 0) 6629 ahd_outb(ahd, LQOSCSCTL, LQONOCHKOVER); 6630 6631 /* 6632 * Tweak IOCELL settings. 6633 */ 6634 if ((ahd->flags & AHD_HP_BOARD) != 0) { 6635 for (i = 0; i < NUMDSPS; i++) { 6636 ahd_outb(ahd, DSPSELECT, i); 6637 ahd_outb(ahd, WRTBIASCTL, WRTBIASCTL_HP_DEFAULT); 6638 } 6639#ifdef AHD_DEBUG 6640 if ((ahd_debug & AHD_SHOW_MISC) != 0) 6641 printf("%s: WRTBIASCTL now 0x%x\n", ahd_name(ahd), 6642 WRTBIASCTL_HP_DEFAULT); 6643#endif 6644 } 6645 ahd_setup_iocell_workaround(ahd); 6646 6647 /* 6648 * Enable LQI Manager interrupts. 6649 */ 6650 ahd_outb(ahd, LQIMODE1, ENLQIPHASE_LQ|ENLQIPHASE_NLQ|ENLIQABORT 6651 | ENLQICRCI_LQ|ENLQICRCI_NLQ|ENLQIBADLQI 6652 | ENLQIOVERI_LQ|ENLQIOVERI_NLQ); 6653 ahd_outb(ahd, LQOMODE0, ENLQOATNLQ|ENLQOATNPKT|ENLQOTCRC); 6654 /* 6655 * We choose to have the sequencer catch LQOPHCHGINPKT errors 6656 * manually for the command phase at the start of a packetized 6657 * selection case. ENLQOBUSFREE should be made redundant by 6658 * the BUSFREE interrupt, but it seems that some LQOBUSFREE 6659 * events fail to assert the BUSFREE interrupt so we must 6660 * also enable LQOBUSFREE interrupts. 6661 */ 6662 ahd_outb(ahd, LQOMODE1, ENLQOBUSFREE); 6663 6664 /* 6665 * Setup sequencer interrupt handlers. 6666 */ 6667 ahd_outw(ahd, INTVEC1_ADDR, ahd_resolve_seqaddr(ahd, LABEL_seq_isr)); 6668 ahd_outw(ahd, INTVEC2_ADDR, ahd_resolve_seqaddr(ahd, LABEL_timer_isr)); 6669 6670 /* 6671 * Setup SCB Offset registers. 6672 */ 6673 if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0) { 6674 ahd_outb(ahd, LUNPTR, offsetof(struct hardware_scb, 6675 pkt_long_lun)); 6676 } else { 6677 ahd_outb(ahd, LUNPTR, offsetof(struct hardware_scb, lun)); 6678 } 6679 ahd_outb(ahd, CMDLENPTR, offsetof(struct hardware_scb, cdb_len)); 6680 ahd_outb(ahd, ATTRPTR, offsetof(struct hardware_scb, task_attribute)); 6681 ahd_outb(ahd, FLAGPTR, offsetof(struct hardware_scb, task_management)); 6682 ahd_outb(ahd, CMDPTR, offsetof(struct hardware_scb, 6683 shared_data.idata.cdb)); 6684 ahd_outb(ahd, QNEXTPTR, 6685 offsetof(struct hardware_scb, next_hscb_busaddr)); 6686 ahd_outb(ahd, ABRTBITPTR, MK_MESSAGE_BIT_OFFSET); 6687 ahd_outb(ahd, ABRTBYTEPTR, offsetof(struct hardware_scb, control)); 6688 if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0) { 6689 ahd_outb(ahd, LUNLEN, 6690 sizeof(ahd->next_queued_hscb->pkt_long_lun) - 1); 6691 } else { 6692 ahd_outb(ahd, LUNLEN, LUNLEN_SINGLE_LEVEL_LUN); 6693 } 6694 ahd_outb(ahd, CDBLIMIT, SCB_CDB_LEN_PTR - 1); 6695 ahd_outb(ahd, MAXCMD, 0xFF); 6696 ahd_outb(ahd, SCBAUTOPTR, 6697 AUSCBPTR_EN | offsetof(struct hardware_scb, tag)); 6698 6699 /* We haven't been enabled for target mode yet. */ 6700 ahd_outb(ahd, MULTARGID, 0); 6701 ahd_outb(ahd, MULTARGID + 1, 0); 6702 6703 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 6704 /* Initialize the negotiation table. */ 6705 if ((ahd->features & AHD_NEW_IOCELL_OPTS) == 0) { 6706 /* 6707 * Clear the spare bytes in the neg table to avoid 6708 * spurious parity errors. 6709 */ 6710 for (target = 0; target < AHD_NUM_TARGETS; target++) { 6711 ahd_outb(ahd, NEGOADDR, target); 6712 ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_PER_DEV0); 6713 for (i = 0; i < AHD_NUM_PER_DEV_ANNEXCOLS; i++) 6714 ahd_outb(ahd, ANNEXDAT, 0); 6715 } 6716 } 6717 for (target = 0; target < AHD_NUM_TARGETS; target++) { 6718 struct ahd_devinfo devinfo; 6719 struct ahd_initiator_tinfo *tinfo; 6720 struct ahd_tmode_tstate *tstate; 6721 6722 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 6723 target, &tstate); 6724 ahd_compile_devinfo(&devinfo, ahd->our_id, 6725 target, CAM_LUN_WILDCARD, 6726 'A', ROLE_INITIATOR); 6727 ahd_update_neg_table(ahd, &devinfo, &tinfo->curr); 6728 } 6729 6730 ahd_outb(ahd, CLRSINT3, NTRAMPERR|OSRAMPERR); 6731 ahd_outb(ahd, CLRINT, CLRSCSIINT); 6732 6733#ifdef NEEDS_MORE_TESTING 6734 /* 6735 * Always enable abort on incoming L_Qs if this feature is 6736 * supported. We use this to catch invalid SCB references. 6737 */ 6738 if ((ahd->bugs & AHD_ABORT_LQI_BUG) == 0) 6739 ahd_outb(ahd, LQCTL1, ABORTPENDING); 6740 else 6741#endif 6742 ahd_outb(ahd, LQCTL1, 0); 6743 6744 /* All of our queues are empty */ 6745 ahd->qoutfifonext = 0; 6746 ahd->qoutfifonext_valid_tag = QOUTFIFO_ENTRY_VALID; 6747 ahd_outb(ahd, QOUTFIFO_ENTRY_VALID_TAG, QOUTFIFO_ENTRY_VALID); 6748 for (i = 0; i < AHD_QOUT_SIZE; i++) 6749 ahd->qoutfifo[i].valid_tag = 0; 6750 ahd_sync_qoutfifo(ahd, BUS_DMASYNC_PREREAD); 6751 6752 ahd->qinfifonext = 0; 6753 for (i = 0; i < AHD_QIN_SIZE; i++) 6754 ahd->qinfifo[i] = SCB_LIST_NULL; 6755 6756 if ((ahd->features & AHD_TARGETMODE) != 0) { 6757 /* All target command blocks start out invalid. */ 6758 for (i = 0; i < AHD_TMODE_CMDS; i++) 6759 ahd->targetcmds[i].cmd_valid = 0; 6760 ahd_sync_tqinfifo(ahd, BUS_DMASYNC_PREREAD); 6761 ahd->tqinfifonext = 1; 6762 ahd_outb(ahd, KERNEL_TQINPOS, ahd->tqinfifonext - 1); 6763 ahd_outb(ahd, TQINPOS, ahd->tqinfifonext); 6764 } 6765 6766 /* Initialize Scratch Ram. */ 6767 ahd_outb(ahd, SEQ_FLAGS, 0); 6768 ahd_outb(ahd, SEQ_FLAGS2, 0); 6769 6770 /* We don't have any waiting selections */ 6771 ahd_outw(ahd, WAITING_TID_HEAD, SCB_LIST_NULL); 6772 ahd_outw(ahd, WAITING_TID_TAIL, SCB_LIST_NULL); 6773 ahd_outw(ahd, MK_MESSAGE_SCB, SCB_LIST_NULL); 6774 ahd_outw(ahd, MK_MESSAGE_SCSIID, 0xFF); 6775 for (i = 0; i < AHD_NUM_TARGETS; i++) 6776 ahd_outw(ahd, WAITING_SCB_TAILS + (2 * i), SCB_LIST_NULL); 6777 6778 /* 6779 * Nobody is waiting to be DMAed into the QOUTFIFO. 6780 */ 6781 ahd_outw(ahd, COMPLETE_SCB_HEAD, SCB_LIST_NULL); 6782 ahd_outw(ahd, COMPLETE_SCB_DMAINPROG_HEAD, SCB_LIST_NULL); 6783 ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, SCB_LIST_NULL); 6784 ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, SCB_LIST_NULL); 6785 ahd_outw(ahd, COMPLETE_ON_QFREEZE_HEAD, SCB_LIST_NULL); 6786 6787 /* 6788 * The Freeze Count is 0. 6789 */ 6790 ahd->qfreeze_cnt = 0; 6791 ahd_outw(ahd, QFREEZE_COUNT, 0); 6792 ahd_outw(ahd, KERNEL_QFREEZE_COUNT, 0); 6793 6794 /* 6795 * Tell the sequencer where it can find our arrays in memory. 6796 */ 6797 busaddr = ahd->shared_data_map.busaddr; 6798 ahd_outl(ahd, SHARED_DATA_ADDR, busaddr); 6799 ahd_outl(ahd, QOUTFIFO_NEXT_ADDR, busaddr); 6800 6801 /* 6802 * Setup the allowed SCSI Sequences based on operational mode. 6803 * If we are a target, we'll enable select in operations once 6804 * we've had a lun enabled. 6805 */ 6806 scsiseq_template = ENAUTOATNP; 6807 if ((ahd->flags & AHD_INITIATORROLE) != 0) 6808 scsiseq_template |= ENRSELI; 6809 ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq_template); 6810 6811 /* There are no busy SCBs yet. */ 6812 for (target = 0; target < AHD_NUM_TARGETS; target++) { 6813 int lun; 6814 6815 for (lun = 0; lun < AHD_NUM_LUNS_NONPKT; lun++) 6816 ahd_unbusy_tcl(ahd, BUILD_TCL_RAW(target, 'A', lun)); 6817 } 6818 6819 /* 6820 * Initialize the group code to command length table. 6821 * Vendor Unique codes are set to 0 so we only capture 6822 * the first byte of the cdb. These can be overridden 6823 * when target mode is enabled. 6824 */ 6825 ahd_outb(ahd, CMDSIZE_TABLE, 5); 6826 ahd_outb(ahd, CMDSIZE_TABLE + 1, 9); 6827 ahd_outb(ahd, CMDSIZE_TABLE + 2, 9); 6828 ahd_outb(ahd, CMDSIZE_TABLE + 3, 0); 6829 ahd_outb(ahd, CMDSIZE_TABLE + 4, 15); 6830 ahd_outb(ahd, CMDSIZE_TABLE + 5, 11); 6831 ahd_outb(ahd, CMDSIZE_TABLE + 6, 0); 6832 ahd_outb(ahd, CMDSIZE_TABLE + 7, 0); 6833 6834 /* Tell the sequencer of our initial queue positions */ 6835 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 6836 ahd_outb(ahd, QOFF_CTLSTA, SCB_QSIZE_512); 6837 ahd->qinfifonext = 0; 6838 ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); 6839 ahd_set_hescb_qoff(ahd, 0); 6840 ahd_set_snscb_qoff(ahd, 0); 6841 ahd_set_sescb_qoff(ahd, 0); 6842 ahd_set_sdscb_qoff(ahd, 0); 6843 6844 /* 6845 * Tell the sequencer which SCB will be the next one it receives. 6846 */ 6847 busaddr = aic_le32toh(ahd->next_queued_hscb->hscb_busaddr); 6848 ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); 6849 6850 /* 6851 * Default to coalescing disabled. 6852 */ 6853 ahd_outw(ahd, INT_COALESCING_CMDCOUNT, 0); 6854 ahd_outw(ahd, CMDS_PENDING, 0); 6855 ahd_update_coalescing_values(ahd, ahd->int_coalescing_timer, 6856 ahd->int_coalescing_maxcmds, 6857 ahd->int_coalescing_mincmds); 6858 ahd_enable_coalescing(ahd, FALSE); 6859 6860 ahd_loadseq(ahd); 6861 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 6862} 6863 6864/* 6865 * Setup default device and controller settings. 6866 * This should only be called if our probe has 6867 * determined that no configuration data is available. 6868 */ 6869int 6870ahd_default_config(struct ahd_softc *ahd) 6871{ 6872 int targ; 6873 6874 ahd->our_id = 7; 6875 6876 /* 6877 * Allocate a tstate to house information for our 6878 * initiator presence on the bus as well as the user 6879 * data for any target mode initiator. 6880 */ 6881 if (ahd_alloc_tstate(ahd, ahd->our_id, 'A') == NULL) { 6882 printf("%s: unable to allocate ahd_tmode_tstate. " 6883 "Failing attach\n", ahd_name(ahd)); 6884 AHD_FATAL_ERROR(ahd); 6885 return (ENOMEM); 6886 } 6887 6888 for (targ = 0; targ < AHD_NUM_TARGETS; targ++) { 6889 struct ahd_devinfo devinfo; 6890 struct ahd_initiator_tinfo *tinfo; 6891 struct ahd_tmode_tstate *tstate; 6892 uint16_t target_mask; 6893 6894 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 6895 targ, &tstate); 6896 /* 6897 * We support SPC2 and SPI4. 6898 */ 6899 tinfo->user.protocol_version = 4; 6900 tinfo->user.transport_version = 4; 6901 6902 target_mask = 0x01 << targ; 6903 ahd->user_discenable |= target_mask; 6904 tstate->discenable |= target_mask; 6905 ahd->user_tagenable |= target_mask; 6906#ifdef AHD_FORCE_160 6907 tinfo->user.period = AHD_SYNCRATE_DT; 6908#else 6909 tinfo->user.period = AHD_SYNCRATE_160; 6910#endif 6911 tinfo->user.offset = MAX_OFFSET; 6912 tinfo->user.ppr_options = MSG_EXT_PPR_RD_STRM 6913 | MSG_EXT_PPR_WR_FLOW 6914 | MSG_EXT_PPR_HOLD_MCS 6915 | MSG_EXT_PPR_IU_REQ 6916 | MSG_EXT_PPR_QAS_REQ 6917 | MSG_EXT_PPR_DT_REQ; 6918 if ((ahd->features & AHD_RTI) != 0) 6919 tinfo->user.ppr_options |= MSG_EXT_PPR_RTI; 6920 6921 tinfo->user.width = MSG_EXT_WDTR_BUS_16_BIT; 6922 6923 /* 6924 * Start out Async/Narrow/Untagged and with 6925 * conservative protocol support. 6926 */ 6927 tinfo->goal.protocol_version = 2; 6928 tinfo->goal.transport_version = 2; 6929 tinfo->curr.protocol_version = 2; 6930 tinfo->curr.transport_version = 2; 6931 ahd_compile_devinfo(&devinfo, ahd->our_id, 6932 targ, CAM_LUN_WILDCARD, 6933 'A', ROLE_INITIATOR); 6934 tstate->tagenable &= ~target_mask; 6935 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 6936 AHD_TRANS_CUR|AHD_TRANS_GOAL, /*paused*/TRUE); 6937 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0, 6938 /*ppr_options*/0, AHD_TRANS_CUR|AHD_TRANS_GOAL, 6939 /*paused*/TRUE); 6940 } 6941 return (0); 6942} 6943 6944/* 6945 * Parse device configuration information. 6946 */ 6947int 6948ahd_parse_cfgdata(struct ahd_softc *ahd, struct seeprom_config *sc) 6949{ 6950 int targ; 6951 int max_targ; 6952 6953 max_targ = sc->max_targets & CFMAXTARG; 6954 ahd->our_id = sc->brtime_id & CFSCSIID; 6955 6956 /* 6957 * Allocate a tstate to house information for our 6958 * initiator presence on the bus as well as the user 6959 * data for any target mode initiator. 6960 */ 6961 if (ahd_alloc_tstate(ahd, ahd->our_id, 'A') == NULL) { 6962 printf("%s: unable to allocate ahd_tmode_tstate. " 6963 "Failing attach\n", ahd_name(ahd)); 6964 AHD_FATAL_ERROR(ahd); 6965 return (ENOMEM); 6966 } 6967 6968 for (targ = 0; targ < max_targ; targ++) { 6969 struct ahd_devinfo devinfo; 6970 struct ahd_initiator_tinfo *tinfo; 6971 struct ahd_transinfo *user_tinfo; 6972 struct ahd_tmode_tstate *tstate; 6973 uint16_t target_mask; 6974 6975 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 6976 targ, &tstate); 6977 user_tinfo = &tinfo->user; 6978 6979 /* 6980 * We support SPC2 and SPI4. 6981 */ 6982 tinfo->user.protocol_version = 4; 6983 tinfo->user.transport_version = 4; 6984 6985 target_mask = 0x01 << targ; 6986 ahd->user_discenable &= ~target_mask; 6987 tstate->discenable &= ~target_mask; 6988 ahd->user_tagenable &= ~target_mask; 6989 if (sc->device_flags[targ] & CFDISC) { 6990 tstate->discenable |= target_mask; 6991 ahd->user_discenable |= target_mask; 6992 ahd->user_tagenable |= target_mask; 6993 } else { 6994 /* 6995 * Cannot be packetized without disconnection. 6996 */ 6997 sc->device_flags[targ] &= ~CFPACKETIZED; 6998 } 6999 7000 user_tinfo->ppr_options = 0; 7001 user_tinfo->period = (sc->device_flags[targ] & CFXFER); 7002 if (user_tinfo->period < CFXFER_ASYNC) { 7003 if (user_tinfo->period <= AHD_PERIOD_10MHz) 7004 user_tinfo->ppr_options |= MSG_EXT_PPR_DT_REQ; 7005 user_tinfo->offset = MAX_OFFSET; 7006 } else { 7007 user_tinfo->offset = 0; 7008 user_tinfo->period = AHD_ASYNC_XFER_PERIOD; 7009 } 7010#ifdef AHD_FORCE_160 7011 if (user_tinfo->period <= AHD_SYNCRATE_160) 7012 user_tinfo->period = AHD_SYNCRATE_DT; 7013#endif 7014 7015 if ((sc->device_flags[targ] & CFPACKETIZED) != 0) { 7016 user_tinfo->ppr_options |= MSG_EXT_PPR_RD_STRM 7017 | MSG_EXT_PPR_WR_FLOW 7018 | MSG_EXT_PPR_HOLD_MCS 7019 | MSG_EXT_PPR_IU_REQ; 7020 if ((ahd->features & AHD_RTI) != 0) 7021 user_tinfo->ppr_options |= MSG_EXT_PPR_RTI; 7022 } 7023 7024 if ((sc->device_flags[targ] & CFQAS) != 0) 7025 user_tinfo->ppr_options |= MSG_EXT_PPR_QAS_REQ; 7026 7027 if ((sc->device_flags[targ] & CFWIDEB) != 0) 7028 user_tinfo->width = MSG_EXT_WDTR_BUS_16_BIT; 7029 else 7030 user_tinfo->width = MSG_EXT_WDTR_BUS_8_BIT; 7031#ifdef AHD_DEBUG 7032 if ((ahd_debug & AHD_SHOW_MISC) != 0) 7033 printf("(%d): %x:%x:%x:%x\n", targ, user_tinfo->width, 7034 user_tinfo->period, user_tinfo->offset, 7035 user_tinfo->ppr_options); 7036#endif 7037 /* 7038 * Start out Async/Narrow/Untagged and with 7039 * conservative protocol support. 7040 */ 7041 tstate->tagenable &= ~target_mask; 7042 tinfo->goal.protocol_version = 2; 7043 tinfo->goal.transport_version = 2; 7044 tinfo->curr.protocol_version = 2; 7045 tinfo->curr.transport_version = 2; 7046 ahd_compile_devinfo(&devinfo, ahd->our_id, 7047 targ, CAM_LUN_WILDCARD, 7048 'A', ROLE_INITIATOR); 7049 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 7050 AHD_TRANS_CUR|AHD_TRANS_GOAL, /*paused*/TRUE); 7051 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0, 7052 /*ppr_options*/0, AHD_TRANS_CUR|AHD_TRANS_GOAL, 7053 /*paused*/TRUE); 7054 } 7055 7056 ahd->flags &= ~AHD_SPCHK_ENB_A; 7057 if (sc->bios_control & CFSPARITY) 7058 ahd->flags |= AHD_SPCHK_ENB_A; 7059 7060 ahd->flags &= ~AHD_RESET_BUS_A; 7061 if (sc->bios_control & CFRESETB) 7062 ahd->flags |= AHD_RESET_BUS_A; 7063 7064 ahd->flags &= ~AHD_EXTENDED_TRANS_A; 7065 if (sc->bios_control & CFEXTEND) 7066 ahd->flags |= AHD_EXTENDED_TRANS_A; 7067 7068 ahd->flags &= ~AHD_BIOS_ENABLED; 7069 if ((sc->bios_control & CFBIOSSTATE) == CFBS_ENABLED) 7070 ahd->flags |= AHD_BIOS_ENABLED; 7071 7072 ahd->flags &= ~AHD_STPWLEVEL_A; 7073 if ((sc->adapter_control & CFSTPWLEVEL) != 0) 7074 ahd->flags |= AHD_STPWLEVEL_A; 7075 7076 return (0); 7077} 7078 7079/* 7080 * Parse device configuration information. 7081 */ 7082int 7083ahd_parse_vpddata(struct ahd_softc *ahd, struct vpd_config *vpd) 7084{ 7085 int error; 7086 7087 error = ahd_verify_vpd_cksum(vpd); 7088 if (error == 0) 7089 return (EINVAL); 7090 if ((vpd->bios_flags & VPDBOOTHOST) != 0) 7091 ahd->flags |= AHD_BOOT_CHANNEL; 7092 return (0); 7093} 7094 7095void 7096ahd_intr_enable(struct ahd_softc *ahd, int enable) 7097{ 7098 u_int hcntrl; 7099 7100 hcntrl = ahd_inb(ahd, HCNTRL); 7101 hcntrl &= ~INTEN; 7102 ahd->pause &= ~INTEN; 7103 ahd->unpause &= ~INTEN; 7104 if (enable) { 7105 hcntrl |= INTEN; 7106 ahd->pause |= INTEN; 7107 ahd->unpause |= INTEN; 7108 } 7109 ahd_outb(ahd, HCNTRL, hcntrl); 7110} 7111 7112void 7113ahd_update_coalescing_values(struct ahd_softc *ahd, u_int timer, u_int maxcmds, 7114 u_int mincmds) 7115{ 7116 if (timer > AHD_TIMER_MAX_US) 7117 timer = AHD_TIMER_MAX_US; 7118 ahd->int_coalescing_timer = timer; 7119 7120 if (maxcmds > AHD_INT_COALESCING_MAXCMDS_MAX) 7121 maxcmds = AHD_INT_COALESCING_MAXCMDS_MAX; 7122 if (mincmds > AHD_INT_COALESCING_MINCMDS_MAX) 7123 mincmds = AHD_INT_COALESCING_MINCMDS_MAX; 7124 ahd->int_coalescing_maxcmds = maxcmds; 7125 ahd_outw(ahd, INT_COALESCING_TIMER, timer / AHD_TIMER_US_PER_TICK); 7126 ahd_outb(ahd, INT_COALESCING_MAXCMDS, -maxcmds); 7127 ahd_outb(ahd, INT_COALESCING_MINCMDS, -mincmds); 7128} 7129 7130void 7131ahd_enable_coalescing(struct ahd_softc *ahd, int enable) 7132{ 7133 7134 ahd->hs_mailbox &= ~ENINT_COALESCE; 7135 if (enable) 7136 ahd->hs_mailbox |= ENINT_COALESCE; 7137 ahd_outb(ahd, HS_MAILBOX, ahd->hs_mailbox); 7138 ahd_flush_device_writes(ahd); 7139 ahd_run_qoutfifo(ahd); 7140} 7141 7142/* 7143 * Ensure that the card is paused in a location 7144 * outside of all critical sections and that all 7145 * pending work is completed prior to returning. 7146 * This routine should only be called from outside 7147 * an interrupt context. 7148 */ 7149void 7150ahd_pause_and_flushwork(struct ahd_softc *ahd) 7151{ 7152 u_int intstat; 7153 u_int maxloops; 7154 7155 maxloops = 1000; 7156 ahd->flags |= AHD_ALL_INTERRUPTS; 7157 ahd_pause(ahd); 7158 /* 7159 * Freeze the outgoing selections. We do this only 7160 * until we are safely paused without further selections 7161 * pending. 7162 */ 7163 ahd->qfreeze_cnt--; 7164 ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); 7165 ahd_outb(ahd, SEQ_FLAGS2, ahd_inb(ahd, SEQ_FLAGS2) | SELECTOUT_QFROZEN); 7166 do { 7167 7168 ahd_unpause(ahd); 7169 /* 7170 * Give the sequencer some time to service 7171 * any active selections. 7172 */ 7173 aic_delay(500); 7174 7175 ahd_intr(ahd); 7176 ahd_pause(ahd); 7177 intstat = ahd_inb(ahd, INTSTAT); 7178 if ((intstat & INT_PEND) == 0) { 7179 ahd_clear_critical_section(ahd); 7180 intstat = ahd_inb(ahd, INTSTAT); 7181 } 7182 } while (--maxloops 7183 && (intstat != 0xFF || (ahd->features & AHD_REMOVABLE) == 0) 7184 && ((intstat & INT_PEND) != 0 7185 || (ahd_inb(ahd, SCSISEQ0) & ENSELO) != 0 7186 || (ahd_inb(ahd, SSTAT0) & (SELDO|SELINGO)) != 0)); 7187 7188 if (maxloops == 0) { 7189 printf("Infinite interrupt loop, INTSTAT = %x", 7190 ahd_inb(ahd, INTSTAT)); 7191 AHD_FATAL_ERROR(ahd); 7192 } 7193 ahd->qfreeze_cnt++; 7194 ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); 7195 7196 ahd_flush_qoutfifo(ahd); 7197 7198 ahd_platform_flushwork(ahd); 7199 ahd->flags &= ~AHD_ALL_INTERRUPTS; 7200} 7201 7202int 7203ahd_suspend(struct ahd_softc *ahd) 7204{ 7205 7206 ahd_pause_and_flushwork(ahd); 7207 7208 if (LIST_FIRST(&ahd->pending_scbs) != NULL) { 7209 ahd_unpause(ahd); 7210 return (EBUSY); 7211 } 7212 ahd_shutdown(ahd); 7213 return (0); 7214} 7215 7216int 7217ahd_resume(struct ahd_softc *ahd) 7218{ 7219 7220 ahd_reset(ahd, /*reinit*/TRUE); 7221 ahd_intr_enable(ahd, TRUE); 7222 ahd_restart(ahd); 7223 return (0); 7224} 7225 7226/************************** Busy Target Table *********************************/ 7227/* 7228 * Set SCBPTR to the SCB that contains the busy 7229 * table entry for TCL. Return the offset into 7230 * the SCB that contains the entry for TCL. 7231 * saved_scbid is dereferenced and set to the 7232 * scbid that should be restored once manipualtion 7233 * of the TCL entry is complete. 7234 */ 7235static __inline u_int 7236ahd_index_busy_tcl(struct ahd_softc *ahd, u_int *saved_scbid, u_int tcl) 7237{ 7238 /* 7239 * Index to the SCB that contains the busy entry. 7240 */ 7241 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7242 *saved_scbid = ahd_get_scbptr(ahd); 7243 ahd_set_scbptr(ahd, TCL_LUN(tcl) 7244 | ((TCL_TARGET_OFFSET(tcl) & 0xC) << 4)); 7245 7246 /* 7247 * And now calculate the SCB offset to the entry. 7248 * Each entry is 2 bytes wide, hence the 7249 * multiplication by 2. 7250 */ 7251 return (((TCL_TARGET_OFFSET(tcl) & 0x3) << 1) + SCB_DISCONNECTED_LISTS); 7252} 7253 7254/* 7255 * Return the untagged transaction id for a given target/channel lun. 7256 */ 7257u_int 7258ahd_find_busy_tcl(struct ahd_softc *ahd, u_int tcl) 7259{ 7260 u_int scbid; 7261 u_int scb_offset; 7262 u_int saved_scbptr; 7263 7264 scb_offset = ahd_index_busy_tcl(ahd, &saved_scbptr, tcl); 7265 scbid = ahd_inw_scbram(ahd, scb_offset); 7266 ahd_set_scbptr(ahd, saved_scbptr); 7267 return (scbid); 7268} 7269 7270void 7271ahd_busy_tcl(struct ahd_softc *ahd, u_int tcl, u_int scbid) 7272{ 7273 u_int scb_offset; 7274 u_int saved_scbptr; 7275 7276 scb_offset = ahd_index_busy_tcl(ahd, &saved_scbptr, tcl); 7277 ahd_outw(ahd, scb_offset, scbid); 7278 ahd_set_scbptr(ahd, saved_scbptr); 7279} 7280 7281/************************** SCB and SCB queue management **********************/ 7282int 7283ahd_match_scb(struct ahd_softc *ahd, struct scb *scb, int target, 7284 char channel, int lun, u_int tag, role_t role) 7285{ 7286 int targ = SCB_GET_TARGET(ahd, scb); 7287 char chan = SCB_GET_CHANNEL(ahd, scb); 7288 int slun = SCB_GET_LUN(scb); 7289 int match; 7290 7291 match = ((chan == channel) || (channel == ALL_CHANNELS)); 7292 if (match != 0) 7293 match = ((targ == target) || (target == CAM_TARGET_WILDCARD)); 7294 if (match != 0) 7295 match = ((lun == slun) || (lun == CAM_LUN_WILDCARD)); 7296 if (match != 0) { 7297#ifdef AHD_TARGET_MODE 7298 int group; 7299 7300 group = XPT_FC_GROUP(scb->io_ctx->ccb_h.func_code); 7301 if (role == ROLE_INITIATOR) { 7302 match = (group != XPT_FC_GROUP_TMODE) 7303 && ((tag == SCB_GET_TAG(scb)) 7304 || (tag == SCB_LIST_NULL)); 7305 } else if (role == ROLE_TARGET) { 7306 match = (group == XPT_FC_GROUP_TMODE) 7307 && ((tag == scb->io_ctx->csio.tag_id) 7308 || (tag == SCB_LIST_NULL)); 7309 } 7310#else /* !AHD_TARGET_MODE */ 7311 match = ((tag == SCB_GET_TAG(scb)) || (tag == SCB_LIST_NULL)); 7312#endif /* AHD_TARGET_MODE */ 7313 } 7314 7315 return match; 7316} 7317 7318void 7319ahd_freeze_devq(struct ahd_softc *ahd, struct scb *scb) 7320{ 7321 int target; 7322 char channel; 7323 int lun; 7324 7325 target = SCB_GET_TARGET(ahd, scb); 7326 lun = SCB_GET_LUN(scb); 7327 channel = SCB_GET_CHANNEL(ahd, scb); 7328 7329 ahd_search_qinfifo(ahd, target, channel, lun, 7330 /*tag*/SCB_LIST_NULL, ROLE_UNKNOWN, 7331 CAM_REQUEUE_REQ, SEARCH_COMPLETE); 7332 7333 ahd_platform_freeze_devq(ahd, scb); 7334} 7335 7336void 7337ahd_qinfifo_requeue_tail(struct ahd_softc *ahd, struct scb *scb) 7338{ 7339 struct scb *prev_scb; 7340 ahd_mode_state saved_modes; 7341 7342 saved_modes = ahd_save_modes(ahd); 7343 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 7344 prev_scb = NULL; 7345 if (ahd_qinfifo_count(ahd) != 0) { 7346 u_int prev_tag; 7347 u_int prev_pos; 7348 7349 prev_pos = AHD_QIN_WRAP(ahd->qinfifonext - 1); 7350 prev_tag = ahd->qinfifo[prev_pos]; 7351 prev_scb = ahd_lookup_scb(ahd, prev_tag); 7352 } 7353 ahd_qinfifo_requeue(ahd, prev_scb, scb); 7354 ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); 7355 ahd_restore_modes(ahd, saved_modes); 7356} 7357 7358static void 7359ahd_qinfifo_requeue(struct ahd_softc *ahd, struct scb *prev_scb, 7360 struct scb *scb) 7361{ 7362 if (prev_scb == NULL) { 7363 uint32_t busaddr; 7364 7365 busaddr = aic_le32toh(scb->hscb->hscb_busaddr); 7366 ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); 7367 } else { 7368 prev_scb->hscb->next_hscb_busaddr = scb->hscb->hscb_busaddr; 7369 ahd_sync_scb(ahd, prev_scb, 7370 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 7371 } 7372 ahd->qinfifo[AHD_QIN_WRAP(ahd->qinfifonext)] = SCB_GET_TAG(scb); 7373 ahd->qinfifonext++; 7374 scb->hscb->next_hscb_busaddr = ahd->next_queued_hscb->hscb_busaddr; 7375 ahd_sync_scb(ahd, scb, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 7376} 7377 7378static int 7379ahd_qinfifo_count(struct ahd_softc *ahd) 7380{ 7381 u_int qinpos; 7382 u_int wrap_qinpos; 7383 u_int wrap_qinfifonext; 7384 7385 AHD_ASSERT_MODES(ahd, AHD_MODE_CCHAN_MSK, AHD_MODE_CCHAN_MSK); 7386 qinpos = ahd_get_snscb_qoff(ahd); 7387 wrap_qinpos = AHD_QIN_WRAP(qinpos); 7388 wrap_qinfifonext = AHD_QIN_WRAP(ahd->qinfifonext); 7389 if (wrap_qinfifonext >= wrap_qinpos) 7390 return (wrap_qinfifonext - wrap_qinpos); 7391 else 7392 return (wrap_qinfifonext 7393 + NUM_ELEMENTS(ahd->qinfifo) - wrap_qinpos); 7394} 7395 7396void 7397ahd_reset_cmds_pending(struct ahd_softc *ahd) 7398{ 7399 struct scb *scb; 7400 ahd_mode_state saved_modes; 7401 u_int pending_cmds; 7402 7403 saved_modes = ahd_save_modes(ahd); 7404 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 7405 7406 /* 7407 * Don't count any commands as outstanding that the 7408 * sequencer has already marked for completion. 7409 */ 7410 ahd_flush_qoutfifo(ahd); 7411 7412 pending_cmds = 0; 7413 LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { 7414 pending_cmds++; 7415 } 7416 ahd_outw(ahd, CMDS_PENDING, pending_cmds - ahd_qinfifo_count(ahd)); 7417 ahd_restore_modes(ahd, saved_modes); 7418 ahd->flags &= ~AHD_UPDATE_PEND_CMDS; 7419} 7420 7421void 7422ahd_done_with_status(struct ahd_softc *ahd, struct scb *scb, uint32_t status) 7423{ 7424 cam_status ostat; 7425 cam_status cstat; 7426 7427 ostat = aic_get_transaction_status(scb); 7428 if (ostat == CAM_REQ_INPROG) 7429 aic_set_transaction_status(scb, status); 7430 cstat = aic_get_transaction_status(scb); 7431 if (cstat != CAM_REQ_CMP) 7432 aic_freeze_scb(scb); 7433 ahd_done(ahd, scb); 7434} 7435 7436int 7437ahd_search_qinfifo(struct ahd_softc *ahd, int target, char channel, 7438 int lun, u_int tag, role_t role, uint32_t status, 7439 ahd_search_action action) 7440{ 7441 struct scb *scb; 7442 struct scb *mk_msg_scb; 7443 struct scb *prev_scb; 7444 ahd_mode_state saved_modes; 7445 u_int qinstart; 7446 u_int qinpos; 7447 u_int qintail; 7448 u_int tid_next; 7449 u_int tid_prev; 7450 u_int scbid; 7451 u_int seq_flags2; 7452 u_int savedscbptr; 7453 uint32_t busaddr; 7454 int found; 7455 int targets; 7456 7457 /* Must be in CCHAN mode */ 7458 saved_modes = ahd_save_modes(ahd); 7459 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 7460 7461 /* 7462 * Halt any pending SCB DMA. The sequencer will reinitiate 7463 * this dma if the qinfifo is not empty once we unpause. 7464 */ 7465 if ((ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN|CCSCBDIR)) 7466 == (CCARREN|CCSCBEN|CCSCBDIR)) { 7467 ahd_outb(ahd, CCSCBCTL, 7468 ahd_inb(ahd, CCSCBCTL) & ~(CCARREN|CCSCBEN)); 7469 while ((ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN)) != 0) 7470 ; 7471 } 7472 /* Determine sequencer's position in the qinfifo. */ 7473 qintail = AHD_QIN_WRAP(ahd->qinfifonext); 7474 qinstart = ahd_get_snscb_qoff(ahd); 7475 qinpos = AHD_QIN_WRAP(qinstart); 7476 found = 0; 7477 prev_scb = NULL; 7478 7479 if (action == SEARCH_PRINT) { 7480 printf("qinstart = %d qinfifonext = %d\nQINFIFO:", 7481 qinstart, ahd->qinfifonext); 7482 } 7483 7484 /* 7485 * Start with an empty queue. Entries that are not chosen 7486 * for removal will be re-added to the queue as we go. 7487 */ 7488 ahd->qinfifonext = qinstart; 7489 busaddr = aic_le32toh(ahd->next_queued_hscb->hscb_busaddr); 7490 ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); 7491 7492 while (qinpos != qintail) { 7493 scb = ahd_lookup_scb(ahd, ahd->qinfifo[qinpos]); 7494 if (scb == NULL) { 7495 printf("qinpos = %d, SCB index = %d\n", 7496 qinpos, ahd->qinfifo[qinpos]); 7497 AHD_FATAL_ERROR(ahd); 7498 panic("Loop 1\n"); 7499 } 7500 7501 if (ahd_match_scb(ahd, scb, target, channel, lun, tag, role)) { 7502 /* 7503 * We found an scb that needs to be acted on. 7504 */ 7505 found++; 7506 switch (action) { 7507 case SEARCH_COMPLETE: 7508 if ((scb->flags & SCB_ACTIVE) == 0) 7509 printf("Inactive SCB in qinfifo\n"); 7510 ahd_done_with_status(ahd, scb, status); 7511 /* FALLTHROUGH */ 7512 case SEARCH_REMOVE: 7513 break; 7514 case SEARCH_PRINT: 7515 printf(" 0x%x", ahd->qinfifo[qinpos]); 7516 /* FALLTHROUGH */ 7517 case SEARCH_COUNT: 7518 ahd_qinfifo_requeue(ahd, prev_scb, scb); 7519 prev_scb = scb; 7520 break; 7521 } 7522 } else { 7523 ahd_qinfifo_requeue(ahd, prev_scb, scb); 7524 prev_scb = scb; 7525 } 7526 qinpos = AHD_QIN_WRAP(qinpos+1); 7527 } 7528 7529 ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); 7530 7531 if (action == SEARCH_PRINT) 7532 printf("\nWAITING_TID_QUEUES:\n"); 7533 7534 /* 7535 * Search waiting for selection lists. We traverse the 7536 * list of "their ids" waiting for selection and, if 7537 * appropriate, traverse the SCBs of each "their id" 7538 * looking for matches. 7539 */ 7540 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 7541 seq_flags2 = ahd_inb(ahd, SEQ_FLAGS2); 7542 if ((seq_flags2 & PENDING_MK_MESSAGE) != 0) { 7543 scbid = ahd_inw(ahd, MK_MESSAGE_SCB); 7544 mk_msg_scb = ahd_lookup_scb(ahd, scbid); 7545 } else 7546 mk_msg_scb = NULL; 7547 savedscbptr = ahd_get_scbptr(ahd); 7548 tid_next = ahd_inw(ahd, WAITING_TID_HEAD); 7549 tid_prev = SCB_LIST_NULL; 7550 targets = 0; 7551 for (scbid = tid_next; !SCBID_IS_NULL(scbid); scbid = tid_next) { 7552 u_int tid_head; 7553 u_int tid_tail; 7554 7555 targets++; 7556 if (targets > AHD_NUM_TARGETS) 7557 panic("TID LIST LOOP"); 7558 7559 if (scbid >= ahd->scb_data.numscbs) { 7560 printf("%s: Waiting TID List inconsistency. " 7561 "SCB index == 0x%x, yet numscbs == 0x%x.", 7562 ahd_name(ahd), scbid, ahd->scb_data.numscbs); 7563 ahd_dump_card_state(ahd); 7564 panic("for safety"); 7565 } 7566 scb = ahd_lookup_scb(ahd, scbid); 7567 if (scb == NULL) { 7568 printf("%s: SCB = 0x%x Not Active!\n", 7569 ahd_name(ahd), scbid); 7570 panic("Waiting TID List traversal\n"); 7571 } 7572 ahd_set_scbptr(ahd, scbid); 7573 tid_next = ahd_inw_scbram(ahd, SCB_NEXT2); 7574 if (ahd_match_scb(ahd, scb, target, channel, CAM_LUN_WILDCARD, 7575 SCB_LIST_NULL, ROLE_UNKNOWN) == 0) { 7576 tid_prev = scbid; 7577 continue; 7578 } 7579 7580 /* 7581 * We found a list of scbs that needs to be searched. 7582 */ 7583 if (action == SEARCH_PRINT) 7584 printf(" %d ( ", SCB_GET_TARGET(ahd, scb)); 7585 tid_head = scbid; 7586 found += ahd_search_scb_list(ahd, target, channel, 7587 lun, tag, role, status, 7588 action, &tid_head, &tid_tail, 7589 SCB_GET_TARGET(ahd, scb)); 7590 /* 7591 * Check any MK_MESSAGE SCB that is still waiting to 7592 * enter this target's waiting for selection queue. 7593 */ 7594 if (mk_msg_scb != NULL 7595 && ahd_match_scb(ahd, mk_msg_scb, target, channel, 7596 lun, tag, role)) { 7597 7598 /* 7599 * We found an scb that needs to be acted on. 7600 */ 7601 found++; 7602 switch (action) { 7603 case SEARCH_COMPLETE: 7604 if ((mk_msg_scb->flags & SCB_ACTIVE) == 0) 7605 printf("Inactive SCB pending MK_MSG\n"); 7606 ahd_done_with_status(ahd, mk_msg_scb, status); 7607 /* FALLTHROUGH */ 7608 case SEARCH_REMOVE: 7609 { 7610 u_int tail_offset; 7611 7612 printf("Removing MK_MSG scb\n"); 7613 7614 /* 7615 * Reset our tail to the tail of the 7616 * main per-target list. 7617 */ 7618 tail_offset = WAITING_SCB_TAILS 7619 + (2 * SCB_GET_TARGET(ahd, mk_msg_scb)); 7620 ahd_outw(ahd, tail_offset, tid_tail); 7621 7622 seq_flags2 &= ~PENDING_MK_MESSAGE; 7623 ahd_outb(ahd, SEQ_FLAGS2, seq_flags2); 7624 ahd_outw(ahd, CMDS_PENDING, 7625 ahd_inw(ahd, CMDS_PENDING)-1); 7626 mk_msg_scb = NULL; 7627 break; 7628 } 7629 case SEARCH_PRINT: 7630 printf(" 0x%x", SCB_GET_TAG(scb)); 7631 /* FALLTHROUGH */ 7632 case SEARCH_COUNT: 7633 break; 7634 } 7635 } 7636 7637 if (mk_msg_scb != NULL 7638 && SCBID_IS_NULL(tid_head) 7639 && ahd_match_scb(ahd, scb, target, channel, CAM_LUN_WILDCARD, 7640 SCB_LIST_NULL, ROLE_UNKNOWN)) { 7641 7642 /* 7643 * When removing the last SCB for a target 7644 * queue with a pending MK_MESSAGE scb, we 7645 * must queue the MK_MESSAGE scb. 7646 */ 7647 printf("Queueing mk_msg_scb\n"); 7648 tid_head = ahd_inw(ahd, MK_MESSAGE_SCB); 7649 seq_flags2 &= ~PENDING_MK_MESSAGE; 7650 ahd_outb(ahd, SEQ_FLAGS2, seq_flags2); 7651 mk_msg_scb = NULL; 7652 } 7653 if (tid_head != scbid) 7654 ahd_stitch_tid_list(ahd, tid_prev, tid_head, tid_next); 7655 if (!SCBID_IS_NULL(tid_head)) 7656 tid_prev = tid_head; 7657 if (action == SEARCH_PRINT) 7658 printf(")\n"); 7659 } 7660 7661 /* Restore saved state. */ 7662 ahd_set_scbptr(ahd, savedscbptr); 7663 ahd_restore_modes(ahd, saved_modes); 7664 return (found); 7665} 7666 7667static int 7668ahd_search_scb_list(struct ahd_softc *ahd, int target, char channel, 7669 int lun, u_int tag, role_t role, uint32_t status, 7670 ahd_search_action action, u_int *list_head, 7671 u_int *list_tail, u_int tid) 7672{ 7673 struct scb *scb; 7674 u_int scbid; 7675 u_int next; 7676 u_int prev; 7677 int found; 7678 7679 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7680 found = 0; 7681 prev = SCB_LIST_NULL; 7682 next = *list_head; 7683 *list_tail = SCB_LIST_NULL; 7684 for (scbid = next; !SCBID_IS_NULL(scbid); scbid = next) { 7685 if (scbid >= ahd->scb_data.numscbs) { 7686 printf("%s:SCB List inconsistency. " 7687 "SCB == 0x%x, yet numscbs == 0x%x.", 7688 ahd_name(ahd), scbid, ahd->scb_data.numscbs); 7689 ahd_dump_card_state(ahd); 7690 panic("for safety"); 7691 } 7692 scb = ahd_lookup_scb(ahd, scbid); 7693 if (scb == NULL) { 7694 printf("%s: SCB = %d Not Active!\n", 7695 ahd_name(ahd), scbid); 7696 panic("Waiting List traversal\n"); 7697 } 7698 ahd_set_scbptr(ahd, scbid); 7699 *list_tail = scbid; 7700 next = ahd_inw_scbram(ahd, SCB_NEXT); 7701 if (ahd_match_scb(ahd, scb, target, channel, 7702 lun, SCB_LIST_NULL, role) == 0) { 7703 prev = scbid; 7704 continue; 7705 } 7706 found++; 7707 switch (action) { 7708 case SEARCH_COMPLETE: 7709 if ((scb->flags & SCB_ACTIVE) == 0) 7710 printf("Inactive SCB in Waiting List\n"); 7711 ahd_done_with_status(ahd, scb, status); 7712 /* FALLTHROUGH */ 7713 case SEARCH_REMOVE: 7714 ahd_rem_wscb(ahd, scbid, prev, next, tid); 7715 *list_tail = prev; 7716 if (SCBID_IS_NULL(prev)) 7717 *list_head = next; 7718 break; 7719 case SEARCH_PRINT: 7720 printf("0x%x ", scbid); 7721 case SEARCH_COUNT: 7722 prev = scbid; 7723 break; 7724 } 7725 if (found > AHD_SCB_MAX) 7726 panic("SCB LIST LOOP"); 7727 } 7728 if (action == SEARCH_COMPLETE 7729 || action == SEARCH_REMOVE) 7730 ahd_outw(ahd, CMDS_PENDING, ahd_inw(ahd, CMDS_PENDING) - found); 7731 return (found); 7732} 7733 7734static void 7735ahd_stitch_tid_list(struct ahd_softc *ahd, u_int tid_prev, 7736 u_int tid_cur, u_int tid_next) 7737{ 7738 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7739 7740 if (SCBID_IS_NULL(tid_cur)) { 7741 7742 /* Bypass current TID list */ 7743 if (SCBID_IS_NULL(tid_prev)) { 7744 ahd_outw(ahd, WAITING_TID_HEAD, tid_next); 7745 } else { 7746 ahd_set_scbptr(ahd, tid_prev); 7747 ahd_outw(ahd, SCB_NEXT2, tid_next); 7748 } 7749 if (SCBID_IS_NULL(tid_next)) 7750 ahd_outw(ahd, WAITING_TID_TAIL, tid_prev); 7751 } else { 7752 7753 /* Stitch through tid_cur */ 7754 if (SCBID_IS_NULL(tid_prev)) { 7755 ahd_outw(ahd, WAITING_TID_HEAD, tid_cur); 7756 } else { 7757 ahd_set_scbptr(ahd, tid_prev); 7758 ahd_outw(ahd, SCB_NEXT2, tid_cur); 7759 } 7760 ahd_set_scbptr(ahd, tid_cur); 7761 ahd_outw(ahd, SCB_NEXT2, tid_next); 7762 7763 if (SCBID_IS_NULL(tid_next)) 7764 ahd_outw(ahd, WAITING_TID_TAIL, tid_cur); 7765 } 7766} 7767 7768/* 7769 * Manipulate the waiting for selection list and return the 7770 * scb that follows the one that we remove. 7771 */ 7772static u_int 7773ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid, 7774 u_int prev, u_int next, u_int tid) 7775{ 7776 u_int tail_offset; 7777 7778 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7779 if (!SCBID_IS_NULL(prev)) { 7780 ahd_set_scbptr(ahd, prev); 7781 ahd_outw(ahd, SCB_NEXT, next); 7782 } 7783 7784 /* 7785 * SCBs that have MK_MESSAGE set in them may 7786 * cause the tail pointer to be updated without 7787 * setting the next pointer of the previous tail. 7788 * Only clear the tail if the removed SCB was 7789 * the tail. 7790 */ 7791 tail_offset = WAITING_SCB_TAILS + (2 * tid); 7792 if (SCBID_IS_NULL(next) 7793 && ahd_inw(ahd, tail_offset) == scbid) 7794 ahd_outw(ahd, tail_offset, prev); 7795 7796 ahd_add_scb_to_free_list(ahd, scbid); 7797 return (next); 7798} 7799 7800/* 7801 * Add the SCB as selected by SCBPTR onto the on chip list of 7802 * free hardware SCBs. This list is empty/unused if we are not 7803 * performing SCB paging. 7804 */ 7805static void 7806ahd_add_scb_to_free_list(struct ahd_softc *ahd, u_int scbid) 7807{ 7808/* XXX Need some other mechanism to designate "free". */ 7809 /* 7810 * Invalidate the tag so that our abort 7811 * routines don't think it's active. 7812 ahd_outb(ahd, SCB_TAG, SCB_LIST_NULL); 7813 */ 7814} 7815 7816/******************************** Error Handling ******************************/ 7817/* 7818 * Abort all SCBs that match the given description (target/channel/lun/tag), 7819 * setting their status to the passed in status if the status has not already 7820 * been modified from CAM_REQ_INPROG. This routine assumes that the sequencer 7821 * is paused before it is called. 7822 */ 7823int 7824ahd_abort_scbs(struct ahd_softc *ahd, int target, char channel, 7825 int lun, u_int tag, role_t role, uint32_t status) 7826{ 7827 struct scb *scbp; 7828 struct scb *scbp_next; 7829 u_int i, j; 7830 u_int maxtarget; 7831 u_int minlun; 7832 u_int maxlun; 7833 int found; 7834 ahd_mode_state saved_modes; 7835 7836 /* restore this when we're done */ 7837 saved_modes = ahd_save_modes(ahd); 7838 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 7839 7840 found = ahd_search_qinfifo(ahd, target, channel, lun, SCB_LIST_NULL, 7841 role, CAM_REQUEUE_REQ, SEARCH_COMPLETE); 7842 7843 /* 7844 * Clean out the busy target table for any untagged commands. 7845 */ 7846 i = 0; 7847 maxtarget = 16; 7848 if (target != CAM_TARGET_WILDCARD) { 7849 i = target; 7850 if (channel == 'B') 7851 i += 8; 7852 maxtarget = i + 1; 7853 } 7854 7855 if (lun == CAM_LUN_WILDCARD) { 7856 minlun = 0; 7857 maxlun = AHD_NUM_LUNS_NONPKT; 7858 } else if (lun >= AHD_NUM_LUNS_NONPKT) { 7859 minlun = maxlun = 0; 7860 } else { 7861 minlun = lun; 7862 maxlun = lun + 1; 7863 } 7864 7865 if (role != ROLE_TARGET) { 7866 for (;i < maxtarget; i++) { 7867 for (j = minlun;j < maxlun; j++) { 7868 u_int scbid; 7869 u_int tcl; 7870 7871 tcl = BUILD_TCL_RAW(i, 'A', j); 7872 scbid = ahd_find_busy_tcl(ahd, tcl); 7873 scbp = ahd_lookup_scb(ahd, scbid); 7874 if (scbp == NULL 7875 || ahd_match_scb(ahd, scbp, target, channel, 7876 lun, tag, role) == 0) 7877 continue; 7878 ahd_unbusy_tcl(ahd, BUILD_TCL_RAW(i, 'A', j)); 7879 } 7880 } 7881 } 7882 7883 /* 7884 * Don't abort commands that have already completed, 7885 * but haven't quite made it up to the host yet. 7886 */ 7887 ahd_flush_qoutfifo(ahd); 7888 7889 /* 7890 * Go through the pending CCB list and look for 7891 * commands for this target that are still active. 7892 * These are other tagged commands that were 7893 * disconnected when the reset occurred. 7894 */ 7895 scbp_next = LIST_FIRST(&ahd->pending_scbs); 7896 while (scbp_next != NULL) { 7897 scbp = scbp_next; 7898 scbp_next = LIST_NEXT(scbp, pending_links); 7899 if (ahd_match_scb(ahd, scbp, target, channel, lun, tag, role)) { 7900 cam_status ostat; 7901 7902 ostat = aic_get_transaction_status(scbp); 7903 if (ostat == CAM_REQ_INPROG) 7904 aic_set_transaction_status(scbp, status); 7905 if (aic_get_transaction_status(scbp) != CAM_REQ_CMP) 7906 aic_freeze_scb(scbp); 7907 if ((scbp->flags & SCB_ACTIVE) == 0) 7908 printf("Inactive SCB on pending list\n"); 7909 ahd_done(ahd, scbp); 7910 found++; 7911 } 7912 } 7913 ahd_restore_modes(ahd, saved_modes); 7914 ahd_platform_abort_scbs(ahd, target, channel, lun, tag, role, status); 7915 ahd->flags |= AHD_UPDATE_PEND_CMDS; 7916 return found; 7917} 7918 7919static void 7920ahd_reset_current_bus(struct ahd_softc *ahd) 7921{ 7922 uint8_t scsiseq; 7923 7924 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7925 ahd_outb(ahd, SIMODE1, ahd_inb(ahd, SIMODE1) & ~ENSCSIRST); 7926 scsiseq = ahd_inb(ahd, SCSISEQ0) & ~(ENSELO|ENARBO|SCSIRSTO); 7927 ahd_outb(ahd, SCSISEQ0, scsiseq | SCSIRSTO); 7928 ahd_flush_device_writes(ahd); 7929 aic_delay(AHD_BUSRESET_DELAY); 7930 /* Turn off the bus reset */ 7931 ahd_outb(ahd, SCSISEQ0, scsiseq); 7932 ahd_flush_device_writes(ahd); 7933 aic_delay(AHD_BUSRESET_DELAY); 7934 if ((ahd->bugs & AHD_SCSIRST_BUG) != 0) { 7935 /* 7936 * 2A Razor #474 7937 * Certain chip state is not cleared for 7938 * SCSI bus resets that we initiate, so 7939 * we must reset the chip. 7940 */ 7941 ahd_reset(ahd, /*reinit*/TRUE); 7942 ahd_intr_enable(ahd, /*enable*/TRUE); 7943 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7944 } 7945 7946 ahd_clear_intstat(ahd); 7947} 7948 7949int 7950ahd_reset_channel(struct ahd_softc *ahd, char channel, int initiate_reset) 7951{ 7952 struct ahd_devinfo devinfo; 7953 u_int initiator; 7954 u_int target; 7955 u_int max_scsiid; 7956 int found; 7957 u_int fifo; 7958 u_int next_fifo; 7959 7960 ahd->pending_device = NULL; 7961 7962 ahd_compile_devinfo(&devinfo, 7963 CAM_TARGET_WILDCARD, 7964 CAM_TARGET_WILDCARD, 7965 CAM_LUN_WILDCARD, 7966 channel, ROLE_UNKNOWN); 7967 ahd_pause(ahd); 7968 7969 /* Make sure the sequencer is in a safe location. */ 7970 ahd_clear_critical_section(ahd); 7971 7972#ifdef AHD_TARGET_MODE 7973 if ((ahd->flags & AHD_TARGETROLE) != 0) { 7974 ahd_run_tqinfifo(ahd, /*paused*/TRUE); 7975 } 7976#endif 7977 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 7978 7979 /* 7980 * Disable selections so no automatic hardware 7981 * functions will modify chip state. 7982 */ 7983 ahd_outb(ahd, SCSISEQ0, 0); 7984 ahd_outb(ahd, SCSISEQ1, 0); 7985 7986 /* 7987 * Safely shut down our DMA engines. Always start with 7988 * the FIFO that is not currently active (if any are 7989 * actively connected). 7990 */ 7991 next_fifo = fifo = ahd_inb(ahd, DFFSTAT) & CURRFIFO; 7992 if (next_fifo > CURRFIFO_1) 7993 /* If disconneced, arbitrarily start with FIFO1. */ 7994 next_fifo = fifo = 0; 7995 do { 7996 next_fifo ^= CURRFIFO_1; 7997 ahd_set_modes(ahd, next_fifo, next_fifo); 7998 ahd_outb(ahd, DFCNTRL, 7999 ahd_inb(ahd, DFCNTRL) & ~(SCSIEN|HDMAEN)); 8000 while ((ahd_inb(ahd, DFCNTRL) & HDMAENACK) != 0) 8001 aic_delay(10); 8002 /* 8003 * Set CURRFIFO to the now inactive channel. 8004 */ 8005 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 8006 ahd_outb(ahd, DFFSTAT, next_fifo); 8007 } while (next_fifo != fifo); 8008 8009 /* 8010 * Reset the bus if we are initiating this reset 8011 */ 8012 ahd_clear_msg_state(ahd); 8013 ahd_outb(ahd, SIMODE1, 8014 ahd_inb(ahd, SIMODE1) & ~(ENBUSFREE|ENSCSIRST)); 8015 8016 if (initiate_reset) 8017 ahd_reset_current_bus(ahd); 8018 8019 ahd_clear_intstat(ahd); 8020 8021 /* 8022 * Clean up all the state information for the 8023 * pending transactions on this bus. 8024 */ 8025 found = ahd_abort_scbs(ahd, CAM_TARGET_WILDCARD, channel, 8026 CAM_LUN_WILDCARD, SCB_LIST_NULL, 8027 ROLE_UNKNOWN, CAM_SCSI_BUS_RESET); 8028 8029 /* 8030 * Cleanup anything left in the FIFOs. 8031 */ 8032 ahd_clear_fifo(ahd, 0); 8033 ahd_clear_fifo(ahd, 1); 8034 8035 /* 8036 * Revert to async/narrow transfers until we renegotiate. 8037 */ 8038 max_scsiid = (ahd->features & AHD_WIDE) ? 15 : 7; 8039 for (target = 0; target <= max_scsiid; target++) { 8040 8041 if (ahd->enabled_targets[target] == NULL) 8042 continue; 8043 for (initiator = 0; initiator <= max_scsiid; initiator++) { 8044 struct ahd_devinfo devinfo; 8045 8046 ahd_compile_devinfo(&devinfo, target, initiator, 8047 CAM_LUN_WILDCARD, 8048 'A', ROLE_UNKNOWN); 8049 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 8050 AHD_TRANS_CUR, /*paused*/TRUE); 8051 ahd_set_syncrate(ahd, &devinfo, /*period*/0, 8052 /*offset*/0, /*ppr_options*/0, 8053 AHD_TRANS_CUR, /*paused*/TRUE); 8054 } 8055 } 8056 8057#ifdef AHD_TARGET_MODE 8058 max_scsiid = (ahd->features & AHD_WIDE) ? 15 : 7; 8059 8060 /* 8061 * Send an immediate notify ccb to all target more peripheral 8062 * drivers affected by this action. 8063 */ 8064 for (target = 0; target <= max_scsiid; target++) { 8065 struct ahd_tmode_tstate* tstate; 8066 u_int lun; 8067 8068 tstate = ahd->enabled_targets[target]; 8069 if (tstate == NULL) 8070 continue; 8071 for (lun = 0; lun < AHD_NUM_LUNS; lun++) { 8072 struct ahd_tmode_lstate* lstate; 8073 8074 lstate = tstate->enabled_luns[lun]; 8075 if (lstate == NULL) 8076 continue; 8077 8078 ahd_queue_lstate_event(ahd, lstate, CAM_TARGET_WILDCARD, 8079 EVENT_TYPE_BUS_RESET, /*arg*/0); 8080 ahd_send_lstate_events(ahd, lstate); 8081 } 8082 } 8083#endif 8084 /* Notify the XPT that a bus reset occurred */ 8085 ahd_send_async(ahd, devinfo.channel, CAM_TARGET_WILDCARD, 8086 CAM_LUN_WILDCARD, AC_BUS_RESET, NULL); 8087 ahd_restart(ahd); 8088 /* 8089 * Freeze the SIMQ until our poller can determine that 8090 * the bus reset has really gone away. We set the initial 8091 * timer to 0 to have the check performed as soon as possible 8092 * from the timer context. 8093 */ 8094 if ((ahd->flags & AHD_RESET_POLL_ACTIVE) == 0) { 8095 ahd->flags |= AHD_RESET_POLL_ACTIVE; 8096 aic_freeze_simq(ahd); 8097 aic_timer_reset(&ahd->reset_timer, 0, ahd_reset_poll, ahd); 8098 } 8099 return (found); 8100} 8101 8102 8103#define AHD_RESET_POLL_MS 1 8104static void 8105ahd_reset_poll(void *arg) 8106{ 8107 struct ahd_softc *ahd = (struct ahd_softc *)arg; 8108 u_int scsiseq1; 8109 8110 ahd_lock(ahd); 8111 ahd_pause(ahd); 8112 ahd_update_modes(ahd); 8113 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 8114 ahd_outb(ahd, CLRSINT1, CLRSCSIRSTI); 8115 if ((ahd_inb(ahd, SSTAT1) & SCSIRSTI) != 0) { 8116 aic_timer_reset(&ahd->reset_timer, AHD_RESET_POLL_MS, 8117 ahd_reset_poll, ahd); 8118 ahd_unpause(ahd); 8119 ahd_unlock(ahd); 8120 return; 8121 } 8122 8123 /* Reset is now low. Complete chip reinitialization. */ 8124 ahd_outb(ahd, SIMODE1, ahd_inb(ahd, SIMODE1) | ENSCSIRST); 8125 scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE); 8126 ahd_outb(ahd, SCSISEQ1, scsiseq1 & (ENSELI|ENRSELI|ENAUTOATNP)); 8127 ahd_unpause(ahd); 8128 ahd->flags &= ~AHD_RESET_POLL_ACTIVE; 8129 aic_release_simq(ahd); 8130 ahd_unlock(ahd); 8131} 8132 8133/**************************** Statistics Processing ***************************/ 8134static void 8135ahd_stat_timer(void *arg) 8136{ 8137 struct ahd_softc *ahd = (struct ahd_softc *)arg; 8138 int enint_coal; 8139 8140 ahd_lock(ahd); 8141 enint_coal = ahd->hs_mailbox & ENINT_COALESCE; 8142 if (ahd->cmdcmplt_total > ahd->int_coalescing_threshold) 8143 enint_coal |= ENINT_COALESCE; 8144 else if (ahd->cmdcmplt_total < ahd->int_coalescing_stop_threshold) 8145 enint_coal &= ~ENINT_COALESCE; 8146 8147 if (enint_coal != (ahd->hs_mailbox & ENINT_COALESCE)) { 8148 ahd_enable_coalescing(ahd, enint_coal); 8149#ifdef AHD_DEBUG 8150 if ((ahd_debug & AHD_SHOW_INT_COALESCING) != 0) 8151 printf("%s: Interrupt coalescing " 8152 "now %sabled. Cmds %d\n", 8153 ahd_name(ahd), 8154 (enint_coal & ENINT_COALESCE) ? "en" : "dis", 8155 ahd->cmdcmplt_total); 8156#endif 8157 } 8158 8159 ahd->cmdcmplt_bucket = (ahd->cmdcmplt_bucket+1) & (AHD_STAT_BUCKETS-1); 8160 ahd->cmdcmplt_total -= ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket]; 8161 ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket] = 0; 8162 aic_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_MS, 8163 ahd_stat_timer, ahd); 8164 ahd_unlock(ahd); 8165} 8166 8167/****************************** Status Processing *****************************/ 8168void 8169ahd_handle_scb_status(struct ahd_softc *ahd, struct scb *scb) 8170{ 8171 if (scb->hscb->shared_data.istatus.scsi_status != 0) { 8172 ahd_handle_scsi_status(ahd, scb); 8173 } else { 8174 ahd_calc_residual(ahd, scb); 8175 ahd_done(ahd, scb); 8176 } 8177} 8178 8179void 8180ahd_handle_scsi_status(struct ahd_softc *ahd, struct scb *scb) 8181{ 8182 struct hardware_scb *hscb; 8183 int paused; 8184 8185 /* 8186 * The sequencer freezes its select-out queue 8187 * anytime a SCSI status error occurs. We must 8188 * handle the error and increment our qfreeze count 8189 * to allow the sequencer to continue. We don't 8190 * bother clearing critical sections here since all 8191 * operations are on data structures that the sequencer 8192 * is not touching once the queue is frozen. 8193 */ 8194 hscb = scb->hscb; 8195 8196 if (ahd_is_paused(ahd)) { 8197 paused = 1; 8198 } else { 8199 paused = 0; 8200 ahd_pause(ahd); 8201 } 8202 8203 /* Freeze the queue until the client sees the error. */ 8204 ahd_freeze_devq(ahd, scb); 8205 aic_freeze_scb(scb); 8206 ahd->qfreeze_cnt++; 8207 ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); 8208 8209 if (paused == 0) 8210 ahd_unpause(ahd); 8211 8212 /* Don't want to clobber the original sense code */ 8213 if ((scb->flags & SCB_SENSE) != 0) { 8214 /* 8215 * Clear the SCB_SENSE Flag and perform 8216 * a normal command completion. 8217 */ 8218 scb->flags &= ~SCB_SENSE; 8219 aic_set_transaction_status(scb, CAM_AUTOSENSE_FAIL); 8220 ahd_done(ahd, scb); 8221 return; 8222 } 8223 aic_set_transaction_status(scb, CAM_SCSI_STATUS_ERROR); 8224 aic_set_scsi_status(scb, hscb->shared_data.istatus.scsi_status); 8225 switch (hscb->shared_data.istatus.scsi_status) { 8226 case STATUS_PKT_SENSE: 8227 { 8228 struct scsi_status_iu_header *siu; 8229 8230 ahd_sync_sense(ahd, scb, BUS_DMASYNC_POSTREAD); 8231 siu = (struct scsi_status_iu_header *)scb->sense_data; 8232 aic_set_scsi_status(scb, siu->status); 8233#ifdef AHD_DEBUG 8234 if ((ahd_debug & AHD_SHOW_SENSE) != 0) { 8235 ahd_print_path(ahd, scb); 8236 printf("SCB 0x%x Received PKT Status of 0x%x\n", 8237 SCB_GET_TAG(scb), siu->status); 8238 printf("\tflags = 0x%x, sense len = 0x%x, " 8239 "pktfail = 0x%x\n", 8240 siu->flags, scsi_4btoul(siu->sense_length), 8241 scsi_4btoul(siu->pkt_failures_length)); 8242 } 8243#endif 8244 if ((siu->flags & SIU_RSPVALID) != 0) { 8245 ahd_print_path(ahd, scb); 8246 if (scsi_4btoul(siu->pkt_failures_length) < 4) { 8247 printf("Unable to parse pkt_failures\n"); 8248 } else { 8249 8250 switch (SIU_PKTFAIL_CODE(siu)) { 8251 case SIU_PFC_NONE: 8252 printf("No packet failure found\n"); 8253 AHD_UNCORRECTABLE_ERROR(ahd); 8254 break; 8255 case SIU_PFC_CIU_FIELDS_INVALID: 8256 printf("Invalid Command IU Field\n"); 8257 AHD_UNCORRECTABLE_ERROR(ahd); 8258 break; 8259 case SIU_PFC_TMF_NOT_SUPPORTED: 8260 printf("TMF not supportd\n"); 8261 AHD_UNCORRECTABLE_ERROR(ahd); 8262 break; 8263 case SIU_PFC_TMF_FAILED: 8264 printf("TMF failed\n"); 8265 AHD_UNCORRECTABLE_ERROR(ahd); 8266 break; 8267 case SIU_PFC_INVALID_TYPE_CODE: 8268 printf("Invalid L_Q Type code\n"); 8269 AHD_UNCORRECTABLE_ERROR(ahd); 8270 break; 8271 case SIU_PFC_ILLEGAL_REQUEST: 8272 AHD_UNCORRECTABLE_ERROR(ahd); 8273 printf("Illegal request\n"); 8274 default: 8275 break; 8276 } 8277 } 8278 if (siu->status == SCSI_STATUS_OK) 8279 aic_set_transaction_status(scb, 8280 CAM_REQ_CMP_ERR); 8281 } 8282 if ((siu->flags & SIU_SNSVALID) != 0) { 8283 scb->flags |= SCB_PKT_SENSE; 8284#ifdef AHD_DEBUG 8285 if ((ahd_debug & AHD_SHOW_SENSE) != 0) 8286 printf("Sense data available\n"); 8287#endif 8288 } 8289 ahd_done(ahd, scb); 8290 break; 8291 } 8292 case SCSI_STATUS_CMD_TERMINATED: 8293 case SCSI_STATUS_CHECK_COND: 8294 { 8295 struct ahd_devinfo devinfo; 8296 struct ahd_dma_seg *sg; 8297 struct scsi_sense *sc; 8298 struct ahd_initiator_tinfo *targ_info; 8299 struct ahd_tmode_tstate *tstate; 8300 struct ahd_transinfo *tinfo; 8301#ifdef AHD_DEBUG 8302 if (ahd_debug & AHD_SHOW_SENSE) { 8303 ahd_print_path(ahd, scb); 8304 printf("SCB %d: requests Check Status\n", 8305 SCB_GET_TAG(scb)); 8306 } 8307#endif 8308 8309 if (aic_perform_autosense(scb) == 0) 8310 break; 8311 8312 ahd_compile_devinfo(&devinfo, SCB_GET_OUR_ID(scb), 8313 SCB_GET_TARGET(ahd, scb), 8314 SCB_GET_LUN(scb), 8315 SCB_GET_CHANNEL(ahd, scb), 8316 ROLE_INITIATOR); 8317 targ_info = ahd_fetch_transinfo(ahd, 8318 devinfo.channel, 8319 devinfo.our_scsiid, 8320 devinfo.target, 8321 &tstate); 8322 tinfo = &targ_info->curr; 8323 sg = scb->sg_list; 8324 sc = (struct scsi_sense *)hscb->shared_data.idata.cdb; 8325 /* 8326 * Save off the residual if there is one. 8327 */ 8328 ahd_update_residual(ahd, scb); 8329#ifdef AHD_DEBUG 8330 if (ahd_debug & AHD_SHOW_SENSE) { 8331 ahd_print_path(ahd, scb); 8332 printf("Sending Sense\n"); 8333 } 8334#endif 8335 scb->sg_count = 0; 8336 sg = ahd_sg_setup(ahd, scb, sg, ahd_get_sense_bufaddr(ahd, scb), 8337 aic_get_sense_bufsize(ahd, scb), 8338 /*last*/TRUE); 8339 sc->opcode = REQUEST_SENSE; 8340 sc->byte2 = 0; 8341 if (tinfo->protocol_version <= SCSI_REV_2 8342 && SCB_GET_LUN(scb) < 8) 8343 sc->byte2 = SCB_GET_LUN(scb) << 5; 8344 sc->unused[0] = 0; 8345 sc->unused[1] = 0; 8346 sc->length = aic_get_sense_bufsize(ahd, scb); 8347 sc->control = 0; 8348 8349 /* 8350 * We can't allow the target to disconnect. 8351 * This will be an untagged transaction and 8352 * having the target disconnect will make this 8353 * transaction indestinguishable from outstanding 8354 * tagged transactions. 8355 */ 8356 hscb->control = 0; 8357 8358 /* 8359 * This request sense could be because the 8360 * the device lost power or in some other 8361 * way has lost our transfer negotiations. 8362 * Renegotiate if appropriate. Unit attention 8363 * errors will be reported before any data 8364 * phases occur. 8365 */ 8366 if (aic_get_residual(scb) == aic_get_transfer_length(scb)) { 8367 ahd_update_neg_request(ahd, &devinfo, 8368 tstate, targ_info, 8369 AHD_NEG_IF_NON_ASYNC); 8370 } 8371 if (tstate->auto_negotiate & devinfo.target_mask) { 8372 hscb->control |= MK_MESSAGE; 8373 scb->flags &= 8374 ~(SCB_NEGOTIATE|SCB_ABORT|SCB_DEVICE_RESET); 8375 scb->flags |= SCB_AUTO_NEGOTIATE; 8376 } 8377 hscb->cdb_len = sizeof(*sc); 8378 ahd_setup_data_scb(ahd, scb); 8379 scb->flags |= SCB_SENSE; 8380 ahd_queue_scb(ahd, scb); 8381 /* 8382 * Ensure we have enough time to actually 8383 * retrieve the sense, but only schedule 8384 * the timer if we are not in recovery or 8385 * this is a recovery SCB that is allowed 8386 * to have an active timer. 8387 */ 8388 if (ahd->scb_data.recovery_scbs == 0 8389 || (scb->flags & SCB_RECOVERY_SCB) != 0) 8390 aic_scb_timer_reset(scb, 5 * 1000); 8391 break; 8392 } 8393 case SCSI_STATUS_OK: 8394 printf("%s: Interrupted for staus of 0???\n", 8395 ahd_name(ahd)); 8396 /* FALLTHROUGH */ 8397 default: 8398 ahd_done(ahd, scb); 8399 break; 8400 } 8401} 8402 8403/* 8404 * Calculate the residual for a just completed SCB. 8405 */ 8406void 8407ahd_calc_residual(struct ahd_softc *ahd, struct scb *scb) 8408{ 8409 struct hardware_scb *hscb; 8410 struct initiator_status *spkt; 8411 uint32_t sgptr; 8412 uint32_t resid_sgptr; 8413 uint32_t resid; 8414 8415 /* 8416 * 5 cases. 8417 * 1) No residual. 8418 * SG_STATUS_VALID clear in sgptr. 8419 * 2) Transferless command 8420 * 3) Never performed any transfers. 8421 * sgptr has SG_FULL_RESID set. 8422 * 4) No residual but target did not 8423 * save data pointers after the 8424 * last transfer, so sgptr was 8425 * never updated. 8426 * 5) We have a partial residual. 8427 * Use residual_sgptr to determine 8428 * where we are. 8429 */ 8430 8431 hscb = scb->hscb; 8432 sgptr = aic_le32toh(hscb->sgptr); 8433 if ((sgptr & SG_STATUS_VALID) == 0) 8434 /* Case 1 */ 8435 return; 8436 sgptr &= ~SG_STATUS_VALID; 8437 8438 if ((sgptr & SG_LIST_NULL) != 0) 8439 /* Case 2 */ 8440 return; 8441 8442 /* 8443 * Residual fields are the same in both 8444 * target and initiator status packets, 8445 * so we can always use the initiator fields 8446 * regardless of the role for this SCB. 8447 */ 8448 spkt = &hscb->shared_data.istatus; 8449 resid_sgptr = aic_le32toh(spkt->residual_sgptr); 8450 if ((sgptr & SG_FULL_RESID) != 0) { 8451 /* Case 3 */ 8452 resid = aic_get_transfer_length(scb); 8453 } else if ((resid_sgptr & SG_LIST_NULL) != 0) { 8454 /* Case 4 */ 8455 return; 8456 } else if ((resid_sgptr & SG_OVERRUN_RESID) != 0) { 8457 ahd_print_path(ahd, scb); 8458 printf("data overrun detected Tag == 0x%x.\n", 8459 SCB_GET_TAG(scb)); 8460 ahd_freeze_devq(ahd, scb); 8461 aic_set_transaction_status(scb, CAM_DATA_RUN_ERR); 8462 aic_freeze_scb(scb); 8463 return; 8464 } else if ((resid_sgptr & ~SG_PTR_MASK) != 0) { 8465 panic("Bogus resid sgptr value 0x%x\n", resid_sgptr); 8466 /* NOTREACHED */ 8467 } else { 8468 struct ahd_dma_seg *sg; 8469 8470 /* 8471 * Remainder of the SG where the transfer 8472 * stopped. 8473 */ 8474 resid = aic_le32toh(spkt->residual_datacnt) & AHD_SG_LEN_MASK; 8475 sg = ahd_sg_bus_to_virt(ahd, scb, resid_sgptr & SG_PTR_MASK); 8476 8477 /* The residual sg_ptr always points to the next sg */ 8478 sg--; 8479 8480 /* 8481 * Add up the contents of all residual 8482 * SG segments that are after the SG where 8483 * the transfer stopped. 8484 */ 8485 while ((aic_le32toh(sg->len) & AHD_DMA_LAST_SEG) == 0) { 8486 sg++; 8487 resid += aic_le32toh(sg->len) & AHD_SG_LEN_MASK; 8488 } 8489 } 8490 if ((scb->flags & SCB_SENSE) == 0) 8491 aic_set_residual(scb, resid); 8492 else 8493 aic_set_sense_residual(scb, resid); 8494 8495#ifdef AHD_DEBUG 8496 if ((ahd_debug & AHD_SHOW_MISC) != 0) { 8497 ahd_print_path(ahd, scb); 8498 printf("Handled %sResidual of %d bytes\n", 8499 (scb->flags & SCB_SENSE) ? "Sense " : "", resid); 8500 } 8501#endif 8502} 8503 8504/******************************* Target Mode **********************************/ 8505#ifdef AHD_TARGET_MODE 8506/* 8507 * Add a target mode event to this lun's queue 8508 */ 8509static void 8510ahd_queue_lstate_event(struct ahd_softc *ahd, struct ahd_tmode_lstate *lstate, 8511 u_int initiator_id, u_int event_type, u_int event_arg) 8512{ 8513 struct ahd_tmode_event *event; 8514 int pending; 8515 8516 xpt_freeze_devq(lstate->path, /*count*/1); 8517 if (lstate->event_w_idx >= lstate->event_r_idx) 8518 pending = lstate->event_w_idx - lstate->event_r_idx; 8519 else 8520 pending = AHD_TMODE_EVENT_BUFFER_SIZE + 1 8521 - (lstate->event_r_idx - lstate->event_w_idx); 8522 8523 if (event_type == EVENT_TYPE_BUS_RESET 8524 || event_type == MSG_BUS_DEV_RESET) { 8525 /* 8526 * Any earlier events are irrelevant, so reset our buffer. 8527 * This has the effect of allowing us to deal with reset 8528 * floods (an external device holding down the reset line) 8529 * without losing the event that is really interesting. 8530 */ 8531 lstate->event_r_idx = 0; 8532 lstate->event_w_idx = 0; 8533 xpt_release_devq(lstate->path, pending, /*runqueue*/FALSE); 8534 } 8535 8536 if (pending == AHD_TMODE_EVENT_BUFFER_SIZE) { 8537 xpt_print_path(lstate->path); 8538 printf("immediate event %x:%x lost\n", 8539 lstate->event_buffer[lstate->event_r_idx].event_type, 8540 lstate->event_buffer[lstate->event_r_idx].event_arg); 8541 lstate->event_r_idx++; 8542 if (lstate->event_r_idx == AHD_TMODE_EVENT_BUFFER_SIZE) 8543 lstate->event_r_idx = 0; 8544 xpt_release_devq(lstate->path, /*count*/1, /*runqueue*/FALSE); 8545 } 8546 8547 event = &lstate->event_buffer[lstate->event_w_idx]; 8548 event->initiator_id = initiator_id; 8549 event->event_type = event_type; 8550 event->event_arg = event_arg; 8551 lstate->event_w_idx++; 8552 if (lstate->event_w_idx == AHD_TMODE_EVENT_BUFFER_SIZE) 8553 lstate->event_w_idx = 0; 8554} 8555 8556/* 8557 * Send any target mode events queued up waiting 8558 * for immediate notify resources. 8559 */ 8560void 8561ahd_send_lstate_events(struct ahd_softc *ahd, struct ahd_tmode_lstate *lstate) 8562{ 8563 struct ccb_hdr *ccbh; 8564 struct ccb_immediate_notify *inot; 8565 8566 while (lstate->event_r_idx != lstate->event_w_idx 8567 && (ccbh = SLIST_FIRST(&lstate->immed_notifies)) != NULL) { 8568 struct ahd_tmode_event *event; 8569 8570 event = &lstate->event_buffer[lstate->event_r_idx]; 8571 SLIST_REMOVE_HEAD(&lstate->immed_notifies, sim_links.sle); 8572 inot = (struct ccb_immediate_notify *)ccbh; 8573 switch (event->event_type) { 8574 case EVENT_TYPE_BUS_RESET: 8575 ccbh->status = CAM_SCSI_BUS_RESET|CAM_DEV_QFRZN; 8576 break; 8577 default: 8578 ccbh->status = CAM_MESSAGE_RECV|CAM_DEV_QFRZN; 8579 inot->arg = event->event_type; 8580 inot->seq_id = event->event_arg; 8581 break; 8582 } 8583 inot->initiator_id = event->initiator_id; 8584 xpt_done((union ccb *)inot); 8585 lstate->event_r_idx++; 8586 if (lstate->event_r_idx == AHD_TMODE_EVENT_BUFFER_SIZE) 8587 lstate->event_r_idx = 0; 8588 } 8589} 8590#endif 8591 8592/******************** Sequencer Program Patching/Download *********************/ 8593 8594#ifdef AHD_DUMP_SEQ 8595void 8596ahd_dumpseq(struct ahd_softc* ahd) 8597{ 8598 int i; 8599 int max_prog; 8600 8601 max_prog = 2048; 8602 8603 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE|LOADRAM); 8604 ahd_outw(ahd, PRGMCNT, 0); 8605 for (i = 0; i < max_prog; i++) { 8606 uint8_t ins_bytes[4]; 8607 8608 ahd_insb(ahd, SEQRAM, ins_bytes, 4); 8609 printf("0x%08x\n", ins_bytes[0] << 24 8610 | ins_bytes[1] << 16 8611 | ins_bytes[2] << 8 8612 | ins_bytes[3]); 8613 } 8614} 8615#endif 8616 8617static void 8618ahd_loadseq(struct ahd_softc *ahd) 8619{ 8620 struct cs cs_table[num_critical_sections]; 8621 u_int begin_set[num_critical_sections]; 8622 u_int end_set[num_critical_sections]; 8623 struct patch *cur_patch; 8624 u_int cs_count; 8625 u_int cur_cs; 8626 u_int i; 8627 int downloaded; 8628 u_int skip_addr; 8629 u_int sg_prefetch_cnt; 8630 u_int sg_prefetch_cnt_limit; 8631 u_int sg_prefetch_align; 8632 u_int sg_size; 8633 u_int cacheline_mask; 8634 uint8_t download_consts[DOWNLOAD_CONST_COUNT]; 8635 8636 if (bootverbose) 8637 printf("%s: Downloading Sequencer Program...", 8638 ahd_name(ahd)); 8639 8640#if DOWNLOAD_CONST_COUNT != 8 8641#error "Download Const Mismatch" 8642#endif 8643 /* 8644 * Start out with 0 critical sections 8645 * that apply to this firmware load. 8646 */ 8647 cs_count = 0; 8648 cur_cs = 0; 8649 memset(begin_set, 0, sizeof(begin_set)); 8650 memset(end_set, 0, sizeof(end_set)); 8651 8652 /* 8653 * Setup downloadable constant table. 8654 * 8655 * The computation for the S/G prefetch variables is 8656 * a bit complicated. We would like to always fetch 8657 * in terms of cachelined sized increments. However, 8658 * if the cacheline is not an even multiple of the 8659 * SG element size or is larger than our SG RAM, using 8660 * just the cache size might leave us with only a portion 8661 * of an SG element at the tail of a prefetch. If the 8662 * cacheline is larger than our S/G prefetch buffer less 8663 * the size of an SG element, we may round down to a cacheline 8664 * that doesn't contain any or all of the S/G of interest 8665 * within the bounds of our S/G ram. Provide variables to 8666 * the sequencer that will allow it to handle these edge 8667 * cases. 8668 */ 8669 /* Start by aligning to the nearest cacheline. */ 8670 sg_prefetch_align = ahd->pci_cachesize; 8671 if (sg_prefetch_align == 0) 8672 sg_prefetch_align = 8; 8673 /* Round down to the nearest power of 2. */ 8674 while (powerof2(sg_prefetch_align) == 0) 8675 sg_prefetch_align--; 8676 8677 cacheline_mask = sg_prefetch_align - 1; 8678 8679 /* 8680 * If the cacheline boundary is greater than half our prefetch RAM 8681 * we risk not being able to fetch even a single complete S/G 8682 * segment if we align to that boundary. 8683 */ 8684 if (sg_prefetch_align > CCSGADDR_MAX/2) 8685 sg_prefetch_align = CCSGADDR_MAX/2; 8686 /* Start by fetching a single cacheline. */ 8687 sg_prefetch_cnt = sg_prefetch_align; 8688 /* 8689 * Increment the prefetch count by cachelines until 8690 * at least one S/G element will fit. 8691 */ 8692 sg_size = sizeof(struct ahd_dma_seg); 8693 if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) 8694 sg_size = sizeof(struct ahd_dma64_seg); 8695 while (sg_prefetch_cnt < sg_size) 8696 sg_prefetch_cnt += sg_prefetch_align; 8697 /* 8698 * If the cacheline is not an even multiple of 8699 * the S/G size, we may only get a partial S/G when 8700 * we align. Add a cacheline if this is the case. 8701 */ 8702 if ((sg_prefetch_align % sg_size) != 0 8703 && (sg_prefetch_cnt < CCSGADDR_MAX)) 8704 sg_prefetch_cnt += sg_prefetch_align; 8705 /* 8706 * Lastly, compute a value that the sequencer can use 8707 * to determine if the remainder of the CCSGRAM buffer 8708 * has a full S/G element in it. 8709 */ 8710 sg_prefetch_cnt_limit = -(sg_prefetch_cnt - sg_size + 1); 8711 download_consts[SG_PREFETCH_CNT] = sg_prefetch_cnt; 8712 download_consts[SG_PREFETCH_CNT_LIMIT] = sg_prefetch_cnt_limit; 8713 download_consts[SG_PREFETCH_ALIGN_MASK] = ~(sg_prefetch_align - 1); 8714 download_consts[SG_PREFETCH_ADDR_MASK] = (sg_prefetch_align - 1); 8715 download_consts[SG_SIZEOF] = sg_size; 8716 download_consts[PKT_OVERRUN_BUFOFFSET] = 8717 (ahd->overrun_buf - (uint8_t *)ahd->qoutfifo) / 256; 8718 download_consts[SCB_TRANSFER_SIZE] = SCB_TRANSFER_SIZE_1BYTE_LUN; 8719 download_consts[CACHELINE_MASK] = cacheline_mask; 8720 cur_patch = patches; 8721 downloaded = 0; 8722 skip_addr = 0; 8723 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE|LOADRAM); 8724 ahd_outw(ahd, PRGMCNT, 0); 8725 8726 for (i = 0; i < sizeof(seqprog)/4; i++) { 8727 if (ahd_check_patch(ahd, &cur_patch, i, &skip_addr) == 0) { 8728 /* 8729 * Don't download this instruction as it 8730 * is in a patch that was removed. 8731 */ 8732 continue; 8733 } 8734 /* 8735 * Move through the CS table until we find a CS 8736 * that might apply to this instruction. 8737 */ 8738 for (; cur_cs < num_critical_sections; cur_cs++) { 8739 if (critical_sections[cur_cs].end <= i) { 8740 if (begin_set[cs_count] == TRUE 8741 && end_set[cs_count] == FALSE) { 8742 cs_table[cs_count].end = downloaded; 8743 end_set[cs_count] = TRUE; 8744 cs_count++; 8745 } 8746 continue; 8747 } 8748 if (critical_sections[cur_cs].begin <= i 8749 && begin_set[cs_count] == FALSE) { 8750 cs_table[cs_count].begin = downloaded; 8751 begin_set[cs_count] = TRUE; 8752 } 8753 break; 8754 } 8755 ahd_download_instr(ahd, i, download_consts); 8756 downloaded++; 8757 } 8758 8759 ahd->num_critical_sections = cs_count; 8760 if (cs_count != 0) { 8761 8762 cs_count *= sizeof(struct cs); 8763 ahd->critical_sections = malloc(cs_count, M_DEVBUF, M_NOWAIT); 8764 if (ahd->critical_sections == NULL) 8765 panic("ahd_loadseq: Could not malloc"); 8766 memcpy(ahd->critical_sections, cs_table, cs_count); 8767 } 8768 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE); 8769 8770 if (bootverbose) { 8771 printf(" %d instructions downloaded\n", downloaded); 8772 printf("%s: Features 0x%x, Bugs 0x%x, Flags 0x%x\n", 8773 ahd_name(ahd), ahd->features, ahd->bugs, ahd->flags); 8774 } 8775} 8776 8777static int 8778ahd_check_patch(struct ahd_softc *ahd, struct patch **start_patch, 8779 u_int start_instr, u_int *skip_addr) 8780{ 8781 struct patch *cur_patch; 8782 struct patch *last_patch; 8783 u_int num_patches; 8784 8785 num_patches = sizeof(patches)/sizeof(struct patch); 8786 last_patch = &patches[num_patches]; 8787 cur_patch = *start_patch; 8788 8789 while (cur_patch < last_patch && start_instr == cur_patch->begin) { 8790 8791 if (cur_patch->patch_func(ahd) == 0) { 8792 8793 /* Start rejecting code */ 8794 *skip_addr = start_instr + cur_patch->skip_instr; 8795 cur_patch += cur_patch->skip_patch; 8796 } else { 8797 /* Accepted this patch. Advance to the next 8798 * one and wait for our intruction pointer to 8799 * hit this point. 8800 */ 8801 cur_patch++; 8802 } 8803 } 8804 8805 *start_patch = cur_patch; 8806 if (start_instr < *skip_addr) 8807 /* Still skipping */ 8808 return (0); 8809 8810 return (1); 8811} 8812 8813static u_int 8814ahd_resolve_seqaddr(struct ahd_softc *ahd, u_int address) 8815{ 8816 struct patch *cur_patch; 8817 int address_offset; 8818 u_int skip_addr; 8819 u_int i; 8820 8821 address_offset = 0; 8822 cur_patch = patches; 8823 skip_addr = 0; 8824 8825 for (i = 0; i < address;) { 8826 8827 ahd_check_patch(ahd, &cur_patch, i, &skip_addr); 8828 8829 if (skip_addr > i) { 8830 int end_addr; 8831 8832 end_addr = MIN(address, skip_addr); 8833 address_offset += end_addr - i; 8834 i = skip_addr; 8835 } else { 8836 i++; 8837 } 8838 } 8839 return (address - address_offset); 8840} 8841 8842static void 8843ahd_download_instr(struct ahd_softc *ahd, u_int instrptr, uint8_t *dconsts) 8844{ 8845 union ins_formats instr; 8846 struct ins_format1 *fmt1_ins; 8847 struct ins_format3 *fmt3_ins; 8848 u_int opcode; 8849 8850 /* 8851 * The firmware is always compiled into a little endian format. 8852 */ 8853 instr.integer = aic_le32toh(*(uint32_t*)&seqprog[instrptr * 4]); 8854 8855 fmt1_ins = &instr.format1; 8856 fmt3_ins = NULL; 8857 8858 /* Pull the opcode */ 8859 opcode = instr.format1.opcode; 8860 switch (opcode) { 8861 case AIC_OP_JMP: 8862 case AIC_OP_JC: 8863 case AIC_OP_JNC: 8864 case AIC_OP_CALL: 8865 case AIC_OP_JNE: 8866 case AIC_OP_JNZ: 8867 case AIC_OP_JE: 8868 case AIC_OP_JZ: 8869 { 8870 fmt3_ins = &instr.format3; 8871 fmt3_ins->address = ahd_resolve_seqaddr(ahd, fmt3_ins->address); 8872 /* FALLTHROUGH */ 8873 } 8874 case AIC_OP_OR: 8875 case AIC_OP_AND: 8876 case AIC_OP_XOR: 8877 case AIC_OP_ADD: 8878 case AIC_OP_ADC: 8879 case AIC_OP_BMOV: 8880 if (fmt1_ins->parity != 0) { 8881 fmt1_ins->immediate = dconsts[fmt1_ins->immediate]; 8882 } 8883 fmt1_ins->parity = 0; 8884 /* FALLTHROUGH */ 8885 case AIC_OP_ROL: 8886 { 8887 int i, count; 8888 8889 /* Calculate odd parity for the instruction */ 8890 for (i = 0, count = 0; i < 31; i++) { 8891 uint32_t mask; 8892 8893 mask = 0x01 << i; 8894 if ((instr.integer & mask) != 0) 8895 count++; 8896 } 8897 if ((count & 0x01) == 0) 8898 instr.format1.parity = 1; 8899 8900 /* The sequencer is a little endian cpu */ 8901 instr.integer = aic_htole32(instr.integer); 8902 ahd_outsb(ahd, SEQRAM, instr.bytes, 4); 8903 break; 8904 } 8905 default: 8906 panic("Unknown opcode encountered in seq program"); 8907 break; 8908 } 8909} 8910 8911static int 8912ahd_probe_stack_size(struct ahd_softc *ahd) 8913{ 8914 int last_probe; 8915 8916 last_probe = 0; 8917 while (1) { 8918 int i; 8919 8920 /* 8921 * We avoid using 0 as a pattern to avoid 8922 * confusion if the stack implementation 8923 * "back-fills" with zeros when "poping' 8924 * entries. 8925 */ 8926 for (i = 1; i <= last_probe+1; i++) { 8927 ahd_outb(ahd, STACK, i & 0xFF); 8928 ahd_outb(ahd, STACK, (i >> 8) & 0xFF); 8929 } 8930 8931 /* Verify */ 8932 for (i = last_probe+1; i > 0; i--) { 8933 u_int stack_entry; 8934 8935 stack_entry = ahd_inb(ahd, STACK) 8936 |(ahd_inb(ahd, STACK) << 8); 8937 if (stack_entry != i) 8938 goto sized; 8939 } 8940 last_probe++; 8941 } 8942sized: 8943 return (last_probe); 8944} 8945 8946void 8947ahd_dump_all_cards_state(void) 8948{ 8949 struct ahd_softc *list_ahd; 8950 8951 TAILQ_FOREACH(list_ahd, &ahd_tailq, links) { 8952 ahd_dump_card_state(list_ahd); 8953 } 8954} 8955 8956int 8957ahd_print_register(ahd_reg_parse_entry_t *table, u_int num_entries, 8958 const char *name, u_int address, u_int value, 8959 u_int *cur_column, u_int wrap_point) 8960{ 8961 int printed; 8962 u_int printed_mask; 8963 u_int dummy_column; 8964 8965 if (cur_column == NULL) { 8966 dummy_column = 0; 8967 cur_column = &dummy_column; 8968 } 8969 8970 if (cur_column != NULL && *cur_column >= wrap_point) { 8971 printf("\n"); 8972 *cur_column = 0; 8973 } 8974 printed = printf("%s[0x%x]", name, value); 8975 if (table == NULL) { 8976 printed += printf(" "); 8977 *cur_column += printed; 8978 return (printed); 8979 } 8980 printed_mask = 0; 8981 while (printed_mask != 0xFF) { 8982 int entry; 8983 8984 for (entry = 0; entry < num_entries; entry++) { 8985 if (((value & table[entry].mask) 8986 != table[entry].value) 8987 || ((printed_mask & table[entry].mask) 8988 == table[entry].mask)) 8989 continue; 8990 8991 printed += printf("%s%s", 8992 printed_mask == 0 ? ":(" : "|", 8993 table[entry].name); 8994 printed_mask |= table[entry].mask; 8995 8996 break; 8997 } 8998 if (entry >= num_entries) 8999 break; 9000 } 9001 if (printed_mask != 0) 9002 printed += printf(") "); 9003 else 9004 printed += printf(" "); 9005 *cur_column += printed; 9006 return (printed); 9007} 9008 9009void 9010ahd_dump_card_state(struct ahd_softc *ahd) 9011{ 9012 struct scb *scb; 9013 ahd_mode_state saved_modes; 9014 u_int dffstat; 9015 int paused; 9016 u_int scb_index; 9017 u_int saved_scb_index; 9018 u_int cur_col; 9019 int i; 9020 9021 if (ahd_is_paused(ahd)) { 9022 paused = 1; 9023 } else { 9024 paused = 0; 9025 ahd_pause(ahd); 9026 } 9027 saved_modes = ahd_save_modes(ahd); 9028 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 9029 printf(">>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<\n" 9030 "%s: Dumping Card State at program address 0x%x Mode 0x%x\n", 9031 ahd_name(ahd), 9032 ahd_inw(ahd, CURADDR), 9033 ahd_build_mode_state(ahd, ahd->saved_src_mode, 9034 ahd->saved_dst_mode)); 9035 if (paused) 9036 printf("Card was paused\n"); 9037 9038 if (ahd_check_cmdcmpltqueues(ahd)) 9039 printf("Completions are pending\n"); 9040 9041 /* 9042 * Mode independent registers. 9043 */ 9044 cur_col = 0; 9045 ahd_intstat_print(ahd_inb(ahd, INTSTAT), &cur_col, 50); 9046 ahd_seloid_print(ahd_inb(ahd, SELOID), &cur_col, 50); 9047 ahd_selid_print(ahd_inb(ahd, SELID), &cur_col, 50); 9048 ahd_hs_mailbox_print(ahd_inb(ahd, LOCAL_HS_MAILBOX), &cur_col, 50); 9049 ahd_intctl_print(ahd_inb(ahd, INTCTL), &cur_col, 50); 9050 ahd_seqintstat_print(ahd_inb(ahd, SEQINTSTAT), &cur_col, 50); 9051 ahd_saved_mode_print(ahd_inb(ahd, SAVED_MODE), &cur_col, 50); 9052 ahd_dffstat_print(ahd_inb(ahd, DFFSTAT), &cur_col, 50); 9053 ahd_scsisigi_print(ahd_inb(ahd, SCSISIGI), &cur_col, 50); 9054 ahd_scsiphase_print(ahd_inb(ahd, SCSIPHASE), &cur_col, 50); 9055 ahd_scsibus_print(ahd_inb(ahd, SCSIBUS), &cur_col, 50); 9056 ahd_lastphase_print(ahd_inb(ahd, LASTPHASE), &cur_col, 50); 9057 ahd_scsiseq0_print(ahd_inb(ahd, SCSISEQ0), &cur_col, 50); 9058 ahd_scsiseq1_print(ahd_inb(ahd, SCSISEQ1), &cur_col, 50); 9059 ahd_seqctl0_print(ahd_inb(ahd, SEQCTL0), &cur_col, 50); 9060 ahd_seqintctl_print(ahd_inb(ahd, SEQINTCTL), &cur_col, 50); 9061 ahd_seq_flags_print(ahd_inb(ahd, SEQ_FLAGS), &cur_col, 50); 9062 ahd_seq_flags2_print(ahd_inb(ahd, SEQ_FLAGS2), &cur_col, 50); 9063 ahd_qfreeze_count_print(ahd_inw(ahd, QFREEZE_COUNT), &cur_col, 50); 9064 ahd_kernel_qfreeze_count_print(ahd_inw(ahd, KERNEL_QFREEZE_COUNT), 9065 &cur_col, 50); 9066 ahd_mk_message_scb_print(ahd_inw(ahd, MK_MESSAGE_SCB), &cur_col, 50); 9067 ahd_mk_message_scsiid_print(ahd_inb(ahd, MK_MESSAGE_SCSIID), 9068 &cur_col, 50); 9069 ahd_sstat0_print(ahd_inb(ahd, SSTAT0), &cur_col, 50); 9070 ahd_sstat1_print(ahd_inb(ahd, SSTAT1), &cur_col, 50); 9071 ahd_sstat2_print(ahd_inb(ahd, SSTAT2), &cur_col, 50); 9072 ahd_sstat3_print(ahd_inb(ahd, SSTAT3), &cur_col, 50); 9073 ahd_perrdiag_print(ahd_inb(ahd, PERRDIAG), &cur_col, 50); 9074 ahd_simode1_print(ahd_inb(ahd, SIMODE1), &cur_col, 50); 9075 ahd_lqistat0_print(ahd_inb(ahd, LQISTAT0), &cur_col, 50); 9076 ahd_lqistat1_print(ahd_inb(ahd, LQISTAT1), &cur_col, 50); 9077 ahd_lqistat2_print(ahd_inb(ahd, LQISTAT2), &cur_col, 50); 9078 ahd_lqostat0_print(ahd_inb(ahd, LQOSTAT0), &cur_col, 50); 9079 ahd_lqostat1_print(ahd_inb(ahd, LQOSTAT1), &cur_col, 50); 9080 ahd_lqostat2_print(ahd_inb(ahd, LQOSTAT2), &cur_col, 50); 9081 printf("\n"); 9082 printf("\nSCB Count = %d CMDS_PENDING = %d LASTSCB 0x%x " 9083 "CURRSCB 0x%x NEXTSCB 0x%x\n", 9084 ahd->scb_data.numscbs, ahd_inw(ahd, CMDS_PENDING), 9085 ahd_inw(ahd, LASTSCB), ahd_inw(ahd, CURRSCB), 9086 ahd_inw(ahd, NEXTSCB)); 9087 cur_col = 0; 9088 /* QINFIFO */ 9089 ahd_search_qinfifo(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS, 9090 CAM_LUN_WILDCARD, SCB_LIST_NULL, 9091 ROLE_UNKNOWN, /*status*/0, SEARCH_PRINT); 9092 saved_scb_index = ahd_get_scbptr(ahd); 9093 printf("Pending list:"); 9094 i = 0; 9095 LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { 9096 if (i++ > AHD_SCB_MAX) 9097 break; 9098 cur_col = printf("\n%3d FIFO_USE[0x%x] ", SCB_GET_TAG(scb), 9099 ahd_inb_scbram(ahd, SCB_FIFO_USE_COUNT)); 9100 ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); 9101 ahd_scb_control_print(ahd_inb_scbram(ahd, SCB_CONTROL), 9102 &cur_col, 60); 9103 ahd_scb_scsiid_print(ahd_inb_scbram(ahd, SCB_SCSIID), 9104 &cur_col, 60); 9105 } 9106 printf("\nTotal %d\n", i); 9107 9108 printf("Kernel Free SCB lists: "); 9109 i = 0; 9110 TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) { 9111 struct scb *list_scb; 9112 9113 printf("\n COLIDX[%d]: ", AHD_GET_SCB_COL_IDX(ahd, scb)); 9114 list_scb = scb; 9115 do { 9116 printf("%d ", SCB_GET_TAG(list_scb)); 9117 list_scb = LIST_NEXT(list_scb, collision_links); 9118 } while (list_scb && i++ < AHD_SCB_MAX); 9119 } 9120 9121 printf("\n Any Device: "); 9122 LIST_FOREACH(scb, &ahd->scb_data.any_dev_free_scb_list, links.le) { 9123 if (i++ > AHD_SCB_MAX) 9124 break; 9125 printf("%d ", SCB_GET_TAG(scb)); 9126 } 9127 printf("\n"); 9128 9129 printf("Sequencer Complete DMA-inprog list: "); 9130 scb_index = ahd_inw(ahd, COMPLETE_SCB_DMAINPROG_HEAD); 9131 i = 0; 9132 while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { 9133 ahd_set_scbptr(ahd, scb_index); 9134 printf("%d ", scb_index); 9135 scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 9136 } 9137 printf("\n"); 9138 9139 printf("Sequencer Complete list: "); 9140 scb_index = ahd_inw(ahd, COMPLETE_SCB_HEAD); 9141 i = 0; 9142 while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { 9143 ahd_set_scbptr(ahd, scb_index); 9144 printf("%d ", scb_index); 9145 scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 9146 } 9147 printf("\n"); 9148 9149 9150 printf("Sequencer DMA-Up and Complete list: "); 9151 scb_index = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD); 9152 i = 0; 9153 while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { 9154 ahd_set_scbptr(ahd, scb_index); 9155 printf("%d ", scb_index); 9156 scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 9157 } 9158 printf("\n"); 9159 printf("Sequencer On QFreeze and Complete list: "); 9160 scb_index = ahd_inw(ahd, COMPLETE_ON_QFREEZE_HEAD); 9161 i = 0; 9162 while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { 9163 ahd_set_scbptr(ahd, scb_index); 9164 printf("%d ", scb_index); 9165 scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 9166 } 9167 printf("\n"); 9168 ahd_set_scbptr(ahd, saved_scb_index); 9169 dffstat = ahd_inb(ahd, DFFSTAT); 9170 for (i = 0; i < 2; i++) { 9171#ifdef AHD_DEBUG 9172 struct scb *fifo_scb; 9173#endif 9174 u_int fifo_scbptr; 9175 9176 ahd_set_modes(ahd, AHD_MODE_DFF0 + i, AHD_MODE_DFF0 + i); 9177 fifo_scbptr = ahd_get_scbptr(ahd); 9178 printf("\n\n%s: FIFO%d %s, LONGJMP == 0x%x, SCB 0x%x\n", 9179 ahd_name(ahd), i, 9180 (dffstat & (FIFO0FREE << i)) ? "Free" : "Active", 9181 ahd_inw(ahd, LONGJMP_ADDR), fifo_scbptr); 9182 cur_col = 0; 9183 ahd_seqimode_print(ahd_inb(ahd, SEQIMODE), &cur_col, 50); 9184 ahd_seqintsrc_print(ahd_inb(ahd, SEQINTSRC), &cur_col, 50); 9185 ahd_dfcntrl_print(ahd_inb(ahd, DFCNTRL), &cur_col, 50); 9186 ahd_dfstatus_print(ahd_inb(ahd, DFSTATUS), &cur_col, 50); 9187 ahd_sg_cache_shadow_print(ahd_inb(ahd, SG_CACHE_SHADOW), 9188 &cur_col, 50); 9189 ahd_sg_state_print(ahd_inb(ahd, SG_STATE), &cur_col, 50); 9190 ahd_dffsxfrctl_print(ahd_inb(ahd, DFFSXFRCTL), &cur_col, 50); 9191 ahd_soffcnt_print(ahd_inb(ahd, SOFFCNT), &cur_col, 50); 9192 ahd_mdffstat_print(ahd_inb(ahd, MDFFSTAT), &cur_col, 50); 9193 if (cur_col > 50) { 9194 printf("\n"); 9195 cur_col = 0; 9196 } 9197 cur_col += printf("SHADDR = 0x%x%x, SHCNT = 0x%x ", 9198 ahd_inl(ahd, SHADDR+4), 9199 ahd_inl(ahd, SHADDR), 9200 (ahd_inb(ahd, SHCNT) 9201 | (ahd_inb(ahd, SHCNT + 1) << 8) 9202 | (ahd_inb(ahd, SHCNT + 2) << 16))); 9203 if (cur_col > 50) { 9204 printf("\n"); 9205 cur_col = 0; 9206 } 9207 cur_col += printf("HADDR = 0x%x%x, HCNT = 0x%x ", 9208 ahd_inl(ahd, HADDR+4), 9209 ahd_inl(ahd, HADDR), 9210 (ahd_inb(ahd, HCNT) 9211 | (ahd_inb(ahd, HCNT + 1) << 8) 9212 | (ahd_inb(ahd, HCNT + 2) << 16))); 9213 ahd_ccsgctl_print(ahd_inb(ahd, CCSGCTL), &cur_col, 50); 9214#ifdef AHD_DEBUG 9215 if ((ahd_debug & AHD_SHOW_SG) != 0) { 9216 fifo_scb = ahd_lookup_scb(ahd, fifo_scbptr); 9217 if (fifo_scb != NULL) 9218 ahd_dump_sglist(fifo_scb); 9219 } 9220#endif 9221 } 9222 printf("\nLQIN: "); 9223 for (i = 0; i < 20; i++) 9224 printf("0x%x ", ahd_inb(ahd, LQIN + i)); 9225 printf("\n"); 9226 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 9227 printf("%s: LQISTATE = 0x%x, LQOSTATE = 0x%x, OPTIONMODE = 0x%x\n", 9228 ahd_name(ahd), ahd_inb(ahd, LQISTATE), ahd_inb(ahd, LQOSTATE), 9229 ahd_inb(ahd, OPTIONMODE)); 9230 printf("%s: OS_SPACE_CNT = 0x%x MAXCMDCNT = 0x%x\n", 9231 ahd_name(ahd), ahd_inb(ahd, OS_SPACE_CNT), 9232 ahd_inb(ahd, MAXCMDCNT)); 9233 printf("%s: SAVED_SCSIID = 0x%x SAVED_LUN = 0x%x\n", 9234 ahd_name(ahd), ahd_inb(ahd, SAVED_SCSIID), 9235 ahd_inb(ahd, SAVED_LUN)); 9236 ahd_simode0_print(ahd_inb(ahd, SIMODE0), &cur_col, 50); 9237 printf("\n"); 9238 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 9239 cur_col = 0; 9240 ahd_ccscbctl_print(ahd_inb(ahd, CCSCBCTL), &cur_col, 50); 9241 printf("\n"); 9242 ahd_set_modes(ahd, ahd->saved_src_mode, ahd->saved_dst_mode); 9243 printf("%s: REG0 == 0x%x, SINDEX = 0x%x, DINDEX = 0x%x\n", 9244 ahd_name(ahd), ahd_inw(ahd, REG0), ahd_inw(ahd, SINDEX), 9245 ahd_inw(ahd, DINDEX)); 9246 printf("%s: SCBPTR == 0x%x, SCB_NEXT == 0x%x, SCB_NEXT2 == 0x%x\n", 9247 ahd_name(ahd), ahd_get_scbptr(ahd), 9248 ahd_inw_scbram(ahd, SCB_NEXT), 9249 ahd_inw_scbram(ahd, SCB_NEXT2)); 9250 printf("CDB %x %x %x %x %x %x\n", 9251 ahd_inb_scbram(ahd, SCB_CDB_STORE), 9252 ahd_inb_scbram(ahd, SCB_CDB_STORE+1), 9253 ahd_inb_scbram(ahd, SCB_CDB_STORE+2), 9254 ahd_inb_scbram(ahd, SCB_CDB_STORE+3), 9255 ahd_inb_scbram(ahd, SCB_CDB_STORE+4), 9256 ahd_inb_scbram(ahd, SCB_CDB_STORE+5)); 9257 printf("STACK:"); 9258 for (i = 0; i < ahd->stack_size; i++) { 9259 ahd->saved_stack[i] = 9260 ahd_inb(ahd, STACK)|(ahd_inb(ahd, STACK) << 8); 9261 printf(" 0x%x", ahd->saved_stack[i]); 9262 } 9263 for (i = ahd->stack_size-1; i >= 0; i--) { 9264 ahd_outb(ahd, STACK, ahd->saved_stack[i] & 0xFF); 9265 ahd_outb(ahd, STACK, (ahd->saved_stack[i] >> 8) & 0xFF); 9266 } 9267 printf("\n<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>\n"); 9268 ahd_platform_dump_card_state(ahd); 9269 ahd_restore_modes(ahd, saved_modes); 9270 if (paused == 0) 9271 ahd_unpause(ahd); 9272} 9273 9274void 9275ahd_dump_scbs(struct ahd_softc *ahd) 9276{ 9277 ahd_mode_state saved_modes; 9278 u_int saved_scb_index; 9279 int i; 9280 9281 saved_modes = ahd_save_modes(ahd); 9282 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 9283 saved_scb_index = ahd_get_scbptr(ahd); 9284 for (i = 0; i < AHD_SCB_MAX; i++) { 9285 ahd_set_scbptr(ahd, i); 9286 printf("%3d", i); 9287 printf("(CTRL 0x%x ID 0x%x N 0x%x N2 0x%x SG 0x%x, RSG 0x%x)\n", 9288 ahd_inb_scbram(ahd, SCB_CONTROL), 9289 ahd_inb_scbram(ahd, SCB_SCSIID), 9290 ahd_inw_scbram(ahd, SCB_NEXT), 9291 ahd_inw_scbram(ahd, SCB_NEXT2), 9292 ahd_inl_scbram(ahd, SCB_SGPTR), 9293 ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR)); 9294 } 9295 printf("\n"); 9296 ahd_set_scbptr(ahd, saved_scb_index); 9297 ahd_restore_modes(ahd, saved_modes); 9298} 9299 9300 9301/*************************** Timeout Handling *********************************/ 9302void 9303ahd_timeout(struct scb *scb) 9304{ 9305 struct ahd_softc *ahd; 9306 9307 ahd = scb->ahd_softc; 9308 if ((scb->flags & SCB_ACTIVE) != 0) { 9309 if ((scb->flags & SCB_TIMEDOUT) == 0) { 9310 LIST_INSERT_HEAD(&ahd->timedout_scbs, scb, 9311 timedout_links); 9312 scb->flags |= SCB_TIMEDOUT; 9313 } 9314 ahd_wakeup_recovery_thread(ahd); 9315 } 9316} 9317 9318/* 9319 * ahd_recover_commands determines if any of the commands that have currently 9320 * timedout are the root cause for this timeout. Innocent commands are given 9321 * a new timeout while we wait for the command executing on the bus to timeout. 9322 * This routine is invoked from a thread context so we are allowed to sleep. 9323 * Our lock is not held on entry. 9324 */ 9325void 9326ahd_recover_commands(struct ahd_softc *ahd) 9327{ 9328 struct scb *scb; 9329 struct scb *active_scb; 9330 int found; 9331 int was_paused; 9332 u_int active_scbptr; 9333 u_int last_phase; 9334 9335 /* 9336 * Pause the controller and manually flush any 9337 * commands that have just completed but that our 9338 * interrupt handler has yet to see. 9339 */ 9340 was_paused = ahd_is_paused(ahd); 9341 9342 printf("%s: Recovery Initiated - Card was %spaused\n", ahd_name(ahd), 9343 was_paused ? "" : "not "); 9344 AHD_CORRECTABLE_ERROR(ahd); 9345 ahd_dump_card_state(ahd); 9346 9347 ahd_pause_and_flushwork(ahd); 9348 9349 if (LIST_EMPTY(&ahd->timedout_scbs) != 0) { 9350 /* 9351 * The timedout commands have already 9352 * completed. This typically means 9353 * that either the timeout value was on 9354 * the hairy edge of what the device 9355 * requires or - more likely - interrupts 9356 * are not happening. 9357 */ 9358 printf("%s: Timedout SCBs already complete. " 9359 "Interrupts may not be functioning.\n", ahd_name(ahd)); 9360 ahd_unpause(ahd); 9361 return; 9362 } 9363 9364 /* 9365 * Determine identity of SCB acting on the bus. 9366 * This test only catches non-packetized transactions. 9367 * Due to the fleeting nature of packetized operations, 9368 * we can't easily determine that a packetized operation 9369 * is on the bus. 9370 */ 9371 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 9372 last_phase = ahd_inb(ahd, LASTPHASE); 9373 active_scbptr = ahd_get_scbptr(ahd); 9374 active_scb = NULL; 9375 if (last_phase != P_BUSFREE 9376 || (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) 9377 active_scb = ahd_lookup_scb(ahd, active_scbptr); 9378 9379 while ((scb = LIST_FIRST(&ahd->timedout_scbs)) != NULL) { 9380 int target; 9381 int lun; 9382 char channel; 9383 9384 target = SCB_GET_TARGET(ahd, scb); 9385 channel = SCB_GET_CHANNEL(ahd, scb); 9386 lun = SCB_GET_LUN(scb); 9387 9388 ahd_print_path(ahd, scb); 9389 printf("SCB %d - timed out\n", SCB_GET_TAG(scb)); 9390 9391 if (scb->flags & (SCB_DEVICE_RESET|SCB_ABORT)) { 9392 /* 9393 * Been down this road before. 9394 * Do a full bus reset. 9395 */ 9396 aic_set_transaction_status(scb, CAM_CMD_TIMEOUT); 9397bus_reset: 9398 found = ahd_reset_channel(ahd, channel, 9399 /*Initiate Reset*/TRUE); 9400 printf("%s: Issued Channel %c Bus Reset. " 9401 "%d SCBs aborted\n", ahd_name(ahd), channel, 9402 found); 9403 continue; 9404 } 9405 9406 /* 9407 * Remove the command from the timedout list in 9408 * preparation for requeing it. 9409 */ 9410 LIST_REMOVE(scb, timedout_links); 9411 scb->flags &= ~SCB_TIMEDOUT; 9412 9413 if (active_scb != NULL) { 9414 9415 if (active_scb != scb) { 9416 9417 /* 9418 * If the active SCB is not us, assume that 9419 * the active SCB has a longer timeout than 9420 * the timedout SCB, and wait for the active 9421 * SCB to timeout. As a safeguard, only 9422 * allow this deferral to continue if some 9423 * untimed-out command is outstanding. 9424 */ 9425 if (ahd_other_scb_timeout(ahd, scb, 9426 active_scb) == 0) 9427 goto bus_reset; 9428 continue; 9429 } 9430 9431 /* 9432 * We're active on the bus, so assert ATN 9433 * and hope that the target responds. 9434 */ 9435 ahd_set_recoveryscb(ahd, active_scb); 9436 active_scb->flags |= SCB_RECOVERY_SCB|SCB_DEVICE_RESET; 9437 ahd_outb(ahd, MSG_OUT, HOST_MSG); 9438 ahd_outb(ahd, SCSISIGO, last_phase|ATNO); 9439 ahd_print_path(ahd, active_scb); 9440 printf("BDR message in message buffer\n"); 9441 aic_scb_timer_reset(scb, 2 * 1000); 9442 break; 9443 } else if (last_phase != P_BUSFREE 9444 && ahd_inb(ahd, SCSIPHASE) == 0) { 9445 /* 9446 * SCB is not identified, there 9447 * is no pending REQ, and the sequencer 9448 * has not seen a busfree. Looks like 9449 * a stuck connection waiting to 9450 * go busfree. Reset the bus. 9451 */ 9452 printf("%s: Connection stuck awaiting busfree or " 9453 "Identify Msg.\n", ahd_name(ahd)); 9454 goto bus_reset; 9455 } else if (ahd_search_qinfifo(ahd, target, channel, lun, 9456 SCB_GET_TAG(scb), 9457 ROLE_INITIATOR, /*status*/0, 9458 SEARCH_COUNT) > 0) { 9459 9460 /* 9461 * We haven't even gone out on the bus 9462 * yet, so the timeout must be due to 9463 * some other command. Reset the timer 9464 * and go on. 9465 */ 9466 if (ahd_other_scb_timeout(ahd, scb, NULL) == 0) 9467 goto bus_reset; 9468 } else { 9469 /* 9470 * This SCB is for a disconnected transaction 9471 * and we haven't found a better candidate on 9472 * the bus to explain this timeout. 9473 */ 9474 ahd_set_recoveryscb(ahd, scb); 9475 9476 /* 9477 * Actually re-queue this SCB in an attempt 9478 * to select the device before it reconnects. 9479 * In either case (selection or reselection), 9480 * we will now issue a target reset to the 9481 * timed-out device. 9482 */ 9483 scb->flags |= SCB_DEVICE_RESET; 9484 scb->hscb->cdb_len = 0; 9485 scb->hscb->task_attribute = 0; 9486 scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; 9487 9488 ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); 9489 if ((scb->flags & SCB_PACKETIZED) != 0) { 9490 /* 9491 * Mark the SCB has having an outstanding 9492 * task management function. Should the command 9493 * complete normally before the task management 9494 * function can be sent, the host will be 9495 * notified to abort our requeued SCB. 9496 */ 9497 ahd_outb(ahd, SCB_TASK_MANAGEMENT, 9498 scb->hscb->task_management); 9499 } else { 9500 /* 9501 * If non-packetized, set the MK_MESSAGE control 9502 * bit indicating that we desire to send a 9503 * message. We also set the disconnected flag 9504 * since there is no guarantee that our SCB 9505 * control byte matches the version on the 9506 * card. We don't want the sequencer to abort 9507 * the command thinking an unsolicited 9508 * reselection occurred. 9509 */ 9510 scb->hscb->control |= MK_MESSAGE|DISCONNECTED; 9511 9512 /* 9513 * The sequencer will never re-reference the 9514 * in-core SCB. To make sure we are notified 9515 * during reslection, set the MK_MESSAGE flag in 9516 * the card's copy of the SCB. 9517 */ 9518 ahd_outb(ahd, SCB_CONTROL, 9519 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); 9520 } 9521 9522 /* 9523 * Clear out any entries in the QINFIFO first 9524 * so we are the next SCB for this target 9525 * to run. 9526 */ 9527 ahd_search_qinfifo(ahd, target, channel, lun, 9528 SCB_LIST_NULL, ROLE_INITIATOR, 9529 CAM_REQUEUE_REQ, SEARCH_COMPLETE); 9530 ahd_qinfifo_requeue_tail(ahd, scb); 9531 ahd_set_scbptr(ahd, active_scbptr); 9532 ahd_print_path(ahd, scb); 9533 printf("Queuing a BDR SCB\n"); 9534 aic_scb_timer_reset(scb, 2 * 1000); 9535 break; 9536 } 9537 } 9538 9539 /* 9540 * Any remaining SCBs were not the "culprit", so remove 9541 * them from the timeout list. The timer for these commands 9542 * will be reset once the recovery SCB completes. 9543 */ 9544 while ((scb = LIST_FIRST(&ahd->timedout_scbs)) != NULL) { 9545 9546 LIST_REMOVE(scb, timedout_links); 9547 scb->flags &= ~SCB_TIMEDOUT; 9548 } 9549 9550 ahd_unpause(ahd); 9551} 9552 9553/* 9554 * Re-schedule a timeout for the passed in SCB if we determine that some 9555 * other SCB is in the process of recovery or an SCB with a longer 9556 * timeout is still pending. Limit our search to just "other_scb" 9557 * if it is non-NULL. 9558 */ 9559static int 9560ahd_other_scb_timeout(struct ahd_softc *ahd, struct scb *scb, 9561 struct scb *other_scb) 9562{ 9563 u_int newtimeout; 9564 int found; 9565 9566 ahd_print_path(ahd, scb); 9567 printf("Other SCB Timeout%s", 9568 (scb->flags & SCB_OTHERTCL_TIMEOUT) != 0 9569 ? " again\n" : "\n"); 9570 9571 AHD_UNCORRECTABLE_ERROR(ahd); 9572 newtimeout = aic_get_timeout(scb); 9573 scb->flags |= SCB_OTHERTCL_TIMEOUT; 9574 found = 0; 9575 if (other_scb != NULL) { 9576 if ((other_scb->flags 9577 & (SCB_OTHERTCL_TIMEOUT|SCB_TIMEDOUT)) == 0 9578 || (other_scb->flags & SCB_RECOVERY_SCB) != 0) { 9579 found++; 9580 newtimeout = MAX(aic_get_timeout(other_scb), 9581 newtimeout); 9582 } 9583 } else { 9584 LIST_FOREACH(other_scb, &ahd->pending_scbs, pending_links) { 9585 if ((other_scb->flags 9586 & (SCB_OTHERTCL_TIMEOUT|SCB_TIMEDOUT)) == 0 9587 || (other_scb->flags & SCB_RECOVERY_SCB) != 0) { 9588 found++; 9589 newtimeout = MAX(aic_get_timeout(other_scb), 9590 newtimeout); 9591 } 9592 } 9593 } 9594 9595 if (found != 0) 9596 aic_scb_timer_reset(scb, newtimeout); 9597 else { 9598 ahd_print_path(ahd, scb); 9599 printf("No other SCB worth waiting for...\n"); 9600 } 9601 9602 return (found != 0); 9603} 9604 9605/**************************** Flexport Logic **********************************/ 9606/* 9607 * Read count 16bit words from 16bit word address start_addr from the 9608 * SEEPROM attached to the controller, into buf, using the controller's 9609 * SEEPROM reading state machine. Optionally treat the data as a byte 9610 * stream in terms of byte order. 9611 */ 9612int 9613ahd_read_seeprom(struct ahd_softc *ahd, uint16_t *buf, 9614 u_int start_addr, u_int count, int bytestream) 9615{ 9616 u_int cur_addr; 9617 u_int end_addr; 9618 int error; 9619 9620 /* 9621 * If we never make it through the loop even once, 9622 * we were passed invalid arguments. 9623 */ 9624 error = EINVAL; 9625 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9626 end_addr = start_addr + count; 9627 for (cur_addr = start_addr; cur_addr < end_addr; cur_addr++) { 9628 9629 ahd_outb(ahd, SEEADR, cur_addr); 9630 ahd_outb(ahd, SEECTL, SEEOP_READ | SEESTART); 9631 9632 error = ahd_wait_seeprom(ahd); 9633 if (error) 9634 break; 9635 if (bytestream != 0) { 9636 uint8_t *bytestream_ptr; 9637 9638 bytestream_ptr = (uint8_t *)buf; 9639 *bytestream_ptr++ = ahd_inb(ahd, SEEDAT); 9640 *bytestream_ptr = ahd_inb(ahd, SEEDAT+1); 9641 } else { 9642 /* 9643 * ahd_inw() already handles machine byte order. 9644 */ 9645 *buf = ahd_inw(ahd, SEEDAT); 9646 } 9647 buf++; 9648 } 9649 return (error); 9650} 9651 9652/* 9653 * Write count 16bit words from buf, into SEEPROM attache to the 9654 * controller starting at 16bit word address start_addr, using the 9655 * controller's SEEPROM writing state machine. 9656 */ 9657int 9658ahd_write_seeprom(struct ahd_softc *ahd, uint16_t *buf, 9659 u_int start_addr, u_int count) 9660{ 9661 u_int cur_addr; 9662 u_int end_addr; 9663 int error; 9664 int retval; 9665 9666 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9667 error = ENOENT; 9668 9669 /* Place the chip into write-enable mode */ 9670 ahd_outb(ahd, SEEADR, SEEOP_EWEN_ADDR); 9671 ahd_outb(ahd, SEECTL, SEEOP_EWEN | SEESTART); 9672 error = ahd_wait_seeprom(ahd); 9673 if (error) 9674 return (error); 9675 9676 /* 9677 * Write the data. If we don't get throught the loop at 9678 * least once, the arguments were invalid. 9679 */ 9680 retval = EINVAL; 9681 end_addr = start_addr + count; 9682 for (cur_addr = start_addr; cur_addr < end_addr; cur_addr++) { 9683 ahd_outw(ahd, SEEDAT, *buf++); 9684 ahd_outb(ahd, SEEADR, cur_addr); 9685 ahd_outb(ahd, SEECTL, SEEOP_WRITE | SEESTART); 9686 9687 retval = ahd_wait_seeprom(ahd); 9688 if (retval) 9689 break; 9690 } 9691 9692 /* 9693 * Disable writes. 9694 */ 9695 ahd_outb(ahd, SEEADR, SEEOP_EWDS_ADDR); 9696 ahd_outb(ahd, SEECTL, SEEOP_EWDS | SEESTART); 9697 error = ahd_wait_seeprom(ahd); 9698 if (error) 9699 return (error); 9700 return (retval); 9701} 9702 9703/* 9704 * Wait ~100us for the serial eeprom to satisfy our request. 9705 */ 9706int 9707ahd_wait_seeprom(struct ahd_softc *ahd) 9708{ 9709 int cnt; 9710 9711 cnt = 5000; 9712 while ((ahd_inb(ahd, SEESTAT) & (SEEARBACK|SEEBUSY)) != 0 && --cnt) 9713 aic_delay(5); 9714 9715 if (cnt == 0) 9716 return (ETIMEDOUT); 9717 return (0); 9718} 9719 9720/* 9721 * Validate the two checksums in the per_channel 9722 * vital product data struct. 9723 */ 9724int 9725ahd_verify_vpd_cksum(struct vpd_config *vpd) 9726{ 9727 int i; 9728 int maxaddr; 9729 uint32_t checksum; 9730 uint8_t *vpdarray; 9731 9732 vpdarray = (uint8_t *)vpd; 9733 maxaddr = offsetof(struct vpd_config, vpd_checksum); 9734 checksum = 0; 9735 for (i = offsetof(struct vpd_config, resource_type); i < maxaddr; i++) 9736 checksum = checksum + vpdarray[i]; 9737 if (checksum == 0 9738 || (-checksum & 0xFF) != vpd->vpd_checksum) 9739 return (0); 9740 9741 checksum = 0; 9742 maxaddr = offsetof(struct vpd_config, checksum); 9743 for (i = offsetof(struct vpd_config, default_target_flags); 9744 i < maxaddr; i++) 9745 checksum = checksum + vpdarray[i]; 9746 if (checksum == 0 9747 || (-checksum & 0xFF) != vpd->checksum) 9748 return (0); 9749 return (1); 9750} 9751 9752int 9753ahd_verify_cksum(struct seeprom_config *sc) 9754{ 9755 int i; 9756 int maxaddr; 9757 uint32_t checksum; 9758 uint16_t *scarray; 9759 9760 maxaddr = (sizeof(*sc)/2) - 1; 9761 checksum = 0; 9762 scarray = (uint16_t *)sc; 9763 9764 for (i = 0; i < maxaddr; i++) 9765 checksum = checksum + scarray[i]; 9766 if (checksum == 0 9767 || (checksum & 0xFFFF) != sc->checksum) { 9768 return (0); 9769 } else { 9770 return (1); 9771 } 9772} 9773 9774int 9775ahd_acquire_seeprom(struct ahd_softc *ahd) 9776{ 9777 /* 9778 * We should be able to determine the SEEPROM type 9779 * from the flexport logic, but unfortunately not 9780 * all implementations have this logic and there is 9781 * no programatic method for determining if the logic 9782 * is present. 9783 */ 9784 return (1); 9785#if 0 9786 uint8_t seetype; 9787 int error; 9788 9789 error = ahd_read_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, &seetype); 9790 if (error != 0 9791 || ((seetype & FLX_ROMSTAT_SEECFG) == FLX_ROMSTAT_SEE_NONE)) 9792 return (0); 9793 return (1); 9794#endif 9795} 9796 9797void 9798ahd_release_seeprom(struct ahd_softc *ahd) 9799{ 9800 /* Currently a no-op */ 9801} 9802 9803int 9804ahd_write_flexport(struct ahd_softc *ahd, u_int addr, u_int value) 9805{ 9806 int error; 9807 9808 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9809 if (addr > 7) 9810 panic("ahd_write_flexport: address out of range"); 9811 ahd_outb(ahd, BRDCTL, BRDEN|(addr << 3)); 9812 error = ahd_wait_flexport(ahd); 9813 if (error != 0) 9814 return (error); 9815 ahd_outb(ahd, BRDDAT, value); 9816 ahd_flush_device_writes(ahd); 9817 ahd_outb(ahd, BRDCTL, BRDSTB|BRDEN|(addr << 3)); 9818 ahd_flush_device_writes(ahd); 9819 ahd_outb(ahd, BRDCTL, BRDEN|(addr << 3)); 9820 ahd_flush_device_writes(ahd); 9821 ahd_outb(ahd, BRDCTL, 0); 9822 ahd_flush_device_writes(ahd); 9823 return (0); 9824} 9825 9826int 9827ahd_read_flexport(struct ahd_softc *ahd, u_int addr, uint8_t *value) 9828{ 9829 int error; 9830 9831 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9832 if (addr > 7) 9833 panic("ahd_read_flexport: address out of range"); 9834 ahd_outb(ahd, BRDCTL, BRDRW|BRDEN|(addr << 3)); 9835 error = ahd_wait_flexport(ahd); 9836 if (error != 0) 9837 return (error); 9838 *value = ahd_inb(ahd, BRDDAT); 9839 ahd_outb(ahd, BRDCTL, 0); 9840 ahd_flush_device_writes(ahd); 9841 return (0); 9842} 9843 9844/* 9845 * Wait at most 2 seconds for flexport arbitration to succeed. 9846 */ 9847int 9848ahd_wait_flexport(struct ahd_softc *ahd) 9849{ 9850 int cnt; 9851 9852 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9853 cnt = 1000000 * 2 / 5; 9854 while ((ahd_inb(ahd, BRDCTL) & FLXARBACK) == 0 && --cnt) 9855 aic_delay(5); 9856 9857 if (cnt == 0) 9858 return (ETIMEDOUT); 9859 return (0); 9860} 9861 9862/************************* Target Mode ****************************************/ 9863#ifdef AHD_TARGET_MODE 9864cam_status 9865ahd_find_tmode_devs(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb, 9866 struct ahd_tmode_tstate **tstate, 9867 struct ahd_tmode_lstate **lstate, 9868 int notfound_failure) 9869{ 9870 9871 if ((ahd->features & AHD_TARGETMODE) == 0) 9872 return (CAM_REQ_INVALID); 9873 9874 /* 9875 * Handle the 'black hole' device that sucks up 9876 * requests to unattached luns on enabled targets. 9877 */ 9878 if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD 9879 && ccb->ccb_h.target_lun == CAM_LUN_WILDCARD) { 9880 *tstate = NULL; 9881 *lstate = ahd->black_hole; 9882 } else { 9883 u_int max_id; 9884 9885 max_id = (ahd->features & AHD_WIDE) ? 15 : 7; 9886 if (ccb->ccb_h.target_id > max_id) 9887 return (CAM_TID_INVALID); 9888 9889 if (ccb->ccb_h.target_lun >= AHD_NUM_LUNS) 9890 return (CAM_LUN_INVALID); 9891 9892 *tstate = ahd->enabled_targets[ccb->ccb_h.target_id]; 9893 *lstate = NULL; 9894 if (*tstate != NULL) 9895 *lstate = 9896 (*tstate)->enabled_luns[ccb->ccb_h.target_lun]; 9897 } 9898 9899 if (notfound_failure != 0 && *lstate == NULL) 9900 return (CAM_PATH_INVALID); 9901 9902 return (CAM_REQ_CMP); 9903} 9904 9905void 9906ahd_handle_en_lun(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb) 9907{ 9908#if NOT_YET 9909 struct ahd_tmode_tstate *tstate; 9910 struct ahd_tmode_lstate *lstate; 9911 struct ccb_en_lun *cel; 9912 cam_status status; 9913 u_int target; 9914 u_int lun; 9915 u_int target_mask; 9916 u_long s; 9917 char channel; 9918 9919 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate, &lstate, 9920 /*notfound_failure*/FALSE); 9921 9922 if (status != CAM_REQ_CMP) { 9923 ccb->ccb_h.status = status; 9924 return; 9925 } 9926 9927 if ((ahd->features & AHD_MULTIROLE) != 0) { 9928 u_int our_id; 9929 9930 our_id = ahd->our_id; 9931 if (ccb->ccb_h.target_id != our_id) { 9932 if ((ahd->features & AHD_MULTI_TID) != 0 9933 && (ahd->flags & AHD_INITIATORROLE) != 0) { 9934 /* 9935 * Only allow additional targets if 9936 * the initiator role is disabled. 9937 * The hardware cannot handle a re-select-in 9938 * on the initiator id during a re-select-out 9939 * on a different target id. 9940 */ 9941 status = CAM_TID_INVALID; 9942 } else if ((ahd->flags & AHD_INITIATORROLE) != 0 9943 || ahd->enabled_luns > 0) { 9944 /* 9945 * Only allow our target id to change 9946 * if the initiator role is not configured 9947 * and there are no enabled luns which 9948 * are attached to the currently registered 9949 * scsi id. 9950 */ 9951 status = CAM_TID_INVALID; 9952 } 9953 } 9954 } 9955 9956 if (status != CAM_REQ_CMP) { 9957 ccb->ccb_h.status = status; 9958 return; 9959 } 9960 9961 /* 9962 * We now have an id that is valid. 9963 * If we aren't in target mode, switch modes. 9964 */ 9965 if ((ahd->flags & AHD_TARGETROLE) == 0 9966 && ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) { 9967 printf("Configuring Target Mode\n"); 9968 if (LIST_FIRST(&ahd->pending_scbs) != NULL) { 9969 ccb->ccb_h.status = CAM_BUSY; 9970 return; 9971 } 9972 ahd->flags |= AHD_TARGETROLE; 9973 if ((ahd->features & AHD_MULTIROLE) == 0) 9974 ahd->flags &= ~AHD_INITIATORROLE; 9975 ahd_pause(ahd); 9976 ahd_loadseq(ahd); 9977 ahd_restart(ahd); 9978 } 9979 cel = &ccb->cel; 9980 target = ccb->ccb_h.target_id; 9981 lun = ccb->ccb_h.target_lun; 9982 channel = SIM_CHANNEL(ahd, sim); 9983 target_mask = 0x01 << target; 9984 if (channel == 'B') 9985 target_mask <<= 8; 9986 9987 if (cel->enable != 0) { 9988 u_int scsiseq1; 9989 9990 /* Are we already enabled?? */ 9991 if (lstate != NULL) { 9992 xpt_print_path(ccb->ccb_h.path); 9993 printf("Lun already enabled\n"); 9994 AHD_CORRECTABLE_ERROR(ahd); 9995 ccb->ccb_h.status = CAM_LUN_ALRDY_ENA; 9996 return; 9997 } 9998 9999 if (cel->grp6_len != 0 10000 || cel->grp7_len != 0) { 10001 /* 10002 * Don't (yet?) support vendor 10003 * specific commands. 10004 */ 10005 ccb->ccb_h.status = CAM_REQ_INVALID; 10006 printf("Non-zero Group Codes\n"); 10007 return; 10008 } 10009 10010 /* 10011 * Seems to be okay. 10012 * Setup our data structures. 10013 */ 10014 if (target != CAM_TARGET_WILDCARD && tstate == NULL) { 10015 tstate = ahd_alloc_tstate(ahd, target, channel); 10016 if (tstate == NULL) { 10017 xpt_print_path(ccb->ccb_h.path); 10018 printf("Couldn't allocate tstate\n"); 10019 ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 10020 return; 10021 } 10022 } 10023 lstate = malloc(sizeof(*lstate), M_DEVBUF, M_NOWAIT); 10024 if (lstate == NULL) { 10025 xpt_print_path(ccb->ccb_h.path); 10026 printf("Couldn't allocate lstate\n"); 10027 ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 10028 return; 10029 } 10030 memset(lstate, 0, sizeof(*lstate)); 10031 status = xpt_create_path(&lstate->path, /*periph*/NULL, 10032 xpt_path_path_id(ccb->ccb_h.path), 10033 xpt_path_target_id(ccb->ccb_h.path), 10034 xpt_path_lun_id(ccb->ccb_h.path)); 10035 if (status != CAM_REQ_CMP) { 10036 free(lstate, M_DEVBUF); 10037 xpt_print_path(ccb->ccb_h.path); 10038 printf("Couldn't allocate path\n"); 10039 ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 10040 return; 10041 } 10042 SLIST_INIT(&lstate->accept_tios); 10043 SLIST_INIT(&lstate->immed_notifies); 10044 ahd_pause(ahd); 10045 if (target != CAM_TARGET_WILDCARD) { 10046 tstate->enabled_luns[lun] = lstate; 10047 ahd->enabled_luns++; 10048 10049 if ((ahd->features & AHD_MULTI_TID) != 0) { 10050 u_int targid_mask; 10051 10052 targid_mask = ahd_inw(ahd, TARGID); 10053 targid_mask |= target_mask; 10054 ahd_outw(ahd, TARGID, targid_mask); 10055 ahd_update_scsiid(ahd, targid_mask); 10056 } else { 10057 u_int our_id; 10058 char channel; 10059 10060 channel = SIM_CHANNEL(ahd, sim); 10061 our_id = SIM_SCSI_ID(ahd, sim); 10062 10063 /* 10064 * This can only happen if selections 10065 * are not enabled 10066 */ 10067 if (target != our_id) { 10068 u_int sblkctl; 10069 char cur_channel; 10070 int swap; 10071 10072 sblkctl = ahd_inb(ahd, SBLKCTL); 10073 cur_channel = (sblkctl & SELBUSB) 10074 ? 'B' : 'A'; 10075 if ((ahd->features & AHD_TWIN) == 0) 10076 cur_channel = 'A'; 10077 swap = cur_channel != channel; 10078 ahd->our_id = target; 10079 10080 if (swap) 10081 ahd_outb(ahd, SBLKCTL, 10082 sblkctl ^ SELBUSB); 10083 10084 ahd_outb(ahd, SCSIID, target); 10085 10086 if (swap) 10087 ahd_outb(ahd, SBLKCTL, sblkctl); 10088 } 10089 } 10090 } else 10091 ahd->black_hole = lstate; 10092 /* Allow select-in operations */ 10093 if (ahd->black_hole != NULL && ahd->enabled_luns > 0) { 10094 scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE); 10095 scsiseq1 |= ENSELI; 10096 ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq1); 10097 scsiseq1 = ahd_inb(ahd, SCSISEQ1); 10098 scsiseq1 |= ENSELI; 10099 ahd_outb(ahd, SCSISEQ1, scsiseq1); 10100 } 10101 ahd_unpause(ahd); 10102 ccb->ccb_h.status = CAM_REQ_CMP; 10103 xpt_print_path(ccb->ccb_h.path); 10104 printf("Lun now enabled for target mode\n"); 10105 } else { 10106 struct scb *scb; 10107 int i, empty; 10108 10109 if (lstate == NULL) { 10110 ccb->ccb_h.status = CAM_LUN_INVALID; 10111 return; 10112 } 10113 10114 ccb->ccb_h.status = CAM_REQ_CMP; 10115 LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { 10116 struct ccb_hdr *ccbh; 10117 10118 ccbh = &scb->io_ctx->ccb_h; 10119 if (ccbh->func_code == XPT_CONT_TARGET_IO 10120 && !xpt_path_comp(ccbh->path, ccb->ccb_h.path)){ 10121 printf("CTIO pending\n"); 10122 ccb->ccb_h.status = CAM_REQ_INVALID; 10123 return; 10124 } 10125 } 10126 10127 if (SLIST_FIRST(&lstate->accept_tios) != NULL) { 10128 printf("ATIOs pending\n"); 10129 ccb->ccb_h.status = CAM_REQ_INVALID; 10130 } 10131 10132 if (SLIST_FIRST(&lstate->immed_notifies) != NULL) { 10133 printf("INOTs pending\n"); 10134 ccb->ccb_h.status = CAM_REQ_INVALID; 10135 } 10136 10137 if (ccb->ccb_h.status != CAM_REQ_CMP) { 10138 return; 10139 } 10140 10141 xpt_print_path(ccb->ccb_h.path); 10142 printf("Target mode disabled\n"); 10143 xpt_free_path(lstate->path); 10144 free(lstate, M_DEVBUF); 10145 10146 ahd_pause(ahd); 10147 /* Can we clean up the target too? */ 10148 if (target != CAM_TARGET_WILDCARD) { 10149 tstate->enabled_luns[lun] = NULL; 10150 ahd->enabled_luns--; 10151 for (empty = 1, i = 0; i < 8; i++) 10152 if (tstate->enabled_luns[i] != NULL) { 10153 empty = 0; 10154 break; 10155 } 10156 10157 if (empty) { 10158 ahd_free_tstate(ahd, target, channel, 10159 /*force*/FALSE); 10160 if (ahd->features & AHD_MULTI_TID) { 10161 u_int targid_mask; 10162 10163 targid_mask = ahd_inw(ahd, TARGID); 10164 targid_mask &= ~target_mask; 10165 ahd_outw(ahd, TARGID, targid_mask); 10166 ahd_update_scsiid(ahd, targid_mask); 10167 } 10168 } 10169 } else { 10170 10171 ahd->black_hole = NULL; 10172 10173 /* 10174 * We can't allow selections without 10175 * our black hole device. 10176 */ 10177 empty = TRUE; 10178 } 10179 if (ahd->enabled_luns == 0) { 10180 /* Disallow select-in */ 10181 u_int scsiseq1; 10182 10183 scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE); 10184 scsiseq1 &= ~ENSELI; 10185 ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq1); 10186 scsiseq1 = ahd_inb(ahd, SCSISEQ1); 10187 scsiseq1 &= ~ENSELI; 10188 ahd_outb(ahd, SCSISEQ1, scsiseq1); 10189 10190 if ((ahd->features & AHD_MULTIROLE) == 0) { 10191 printf("Configuring Initiator Mode\n"); 10192 ahd->flags &= ~AHD_TARGETROLE; 10193 ahd->flags |= AHD_INITIATORROLE; 10194 ahd_pause(ahd); 10195 ahd_loadseq(ahd); 10196 ahd_restart(ahd); 10197 /* 10198 * Unpaused. The extra unpause 10199 * that follows is harmless. 10200 */ 10201 } 10202 } 10203 ahd_unpause(ahd); 10204 } 10205#endif 10206} 10207 10208static void 10209ahd_update_scsiid(struct ahd_softc *ahd, u_int targid_mask) 10210{ 10211#if NOT_YET 10212 u_int scsiid_mask; 10213 u_int scsiid; 10214 10215 if ((ahd->features & AHD_MULTI_TID) == 0) 10216 panic("ahd_update_scsiid called on non-multitid unit\n"); 10217 10218 /* 10219 * Since we will rely on the TARGID mask 10220 * for selection enables, ensure that OID 10221 * in SCSIID is not set to some other ID 10222 * that we don't want to allow selections on. 10223 */ 10224 if ((ahd->features & AHD_ULTRA2) != 0) 10225 scsiid = ahd_inb(ahd, SCSIID_ULTRA2); 10226 else 10227 scsiid = ahd_inb(ahd, SCSIID); 10228 scsiid_mask = 0x1 << (scsiid & OID); 10229 if ((targid_mask & scsiid_mask) == 0) { 10230 u_int our_id; 10231 10232 /* ffs counts from 1 */ 10233 our_id = ffs(targid_mask); 10234 if (our_id == 0) 10235 our_id = ahd->our_id; 10236 else 10237 our_id--; 10238 scsiid &= TID; 10239 scsiid |= our_id; 10240 } 10241 if ((ahd->features & AHD_ULTRA2) != 0) 10242 ahd_outb(ahd, SCSIID_ULTRA2, scsiid); 10243 else 10244 ahd_outb(ahd, SCSIID, scsiid); 10245#endif 10246} 10247 10248void 10249ahd_run_tqinfifo(struct ahd_softc *ahd, int paused) 10250{ 10251 struct target_cmd *cmd; 10252 10253 ahd_sync_tqinfifo(ahd, BUS_DMASYNC_POSTREAD); 10254 while ((cmd = &ahd->targetcmds[ahd->tqinfifonext])->cmd_valid != 0) { 10255 10256 /* 10257 * Only advance through the queue if we 10258 * have the resources to process the command. 10259 */ 10260 if (ahd_handle_target_cmd(ahd, cmd) != 0) 10261 break; 10262 10263 cmd->cmd_valid = 0; 10264 ahd_dmamap_sync(ahd, ahd->shared_data_dmat, 10265 ahd->shared_data_dmamap, 10266 ahd_targetcmd_offset(ahd, ahd->tqinfifonext), 10267 sizeof(struct target_cmd), 10268 BUS_DMASYNC_PREREAD); 10269 ahd->tqinfifonext++; 10270 10271 /* 10272 * Lazily update our position in the target mode incoming 10273 * command queue as seen by the sequencer. 10274 */ 10275 if ((ahd->tqinfifonext & (HOST_TQINPOS - 1)) == 1) { 10276 u_int hs_mailbox; 10277 10278 hs_mailbox = ahd_inb(ahd, HS_MAILBOX); 10279 hs_mailbox &= ~HOST_TQINPOS; 10280 hs_mailbox |= ahd->tqinfifonext & HOST_TQINPOS; 10281 ahd_outb(ahd, HS_MAILBOX, hs_mailbox); 10282 } 10283 } 10284} 10285 10286static int 10287ahd_handle_target_cmd(struct ahd_softc *ahd, struct target_cmd *cmd) 10288{ 10289 struct ahd_tmode_tstate *tstate; 10290 struct ahd_tmode_lstate *lstate; 10291 struct ccb_accept_tio *atio; 10292 uint8_t *byte; 10293 int initiator; 10294 int target; 10295 int lun; 10296 10297 initiator = SCSIID_TARGET(ahd, cmd->scsiid); 10298 target = SCSIID_OUR_ID(cmd->scsiid); 10299 lun = (cmd->identify & MSG_IDENTIFY_LUNMASK); 10300 10301 byte = cmd->bytes; 10302 tstate = ahd->enabled_targets[target]; 10303 lstate = NULL; 10304 if (tstate != NULL) 10305 lstate = tstate->enabled_luns[lun]; 10306 10307 /* 10308 * Commands for disabled luns go to the black hole driver. 10309 */ 10310 if (lstate == NULL) 10311 lstate = ahd->black_hole; 10312 10313 atio = (struct ccb_accept_tio*)SLIST_FIRST(&lstate->accept_tios); 10314 if (atio == NULL) { 10315 ahd->flags |= AHD_TQINFIFO_BLOCKED; 10316 /* 10317 * Wait for more ATIOs from the peripheral driver for this lun. 10318 */ 10319 return (1); 10320 } else 10321 ahd->flags &= ~AHD_TQINFIFO_BLOCKED; 10322#ifdef AHD_DEBUG 10323 if ((ahd_debug & AHD_SHOW_TQIN) != 0) 10324 printf("Incoming command from %d for %d:%d%s\n", 10325 initiator, target, lun, 10326 lstate == ahd->black_hole ? "(Black Holed)" : ""); 10327#endif 10328 SLIST_REMOVE_HEAD(&lstate->accept_tios, sim_links.sle); 10329 10330 if (lstate == ahd->black_hole) { 10331 /* Fill in the wildcards */ 10332 atio->ccb_h.target_id = target; 10333 atio->ccb_h.target_lun = lun; 10334 } 10335 10336 /* 10337 * Package it up and send it off to 10338 * whomever has this lun enabled. 10339 */ 10340 atio->sense_len = 0; 10341 atio->init_id = initiator; 10342 if (byte[0] != 0xFF) { 10343 /* Tag was included */ 10344 atio->tag_action = *byte++; 10345 atio->tag_id = *byte++; 10346 atio->ccb_h.flags = CAM_TAG_ACTION_VALID; 10347 } else { 10348 atio->ccb_h.flags = 0; 10349 } 10350 byte++; 10351 10352 /* Okay. Now determine the cdb size based on the command code */ 10353 switch (*byte >> CMD_GROUP_CODE_SHIFT) { 10354 case 0: 10355 atio->cdb_len = 6; 10356 break; 10357 case 1: 10358 case 2: 10359 atio->cdb_len = 10; 10360 break; 10361 case 4: 10362 atio->cdb_len = 16; 10363 break; 10364 case 5: 10365 atio->cdb_len = 12; 10366 break; 10367 case 3: 10368 default: 10369 /* Only copy the opcode. */ 10370 atio->cdb_len = 1; 10371 printf("Reserved or VU command code type encountered\n"); 10372 break; 10373 } 10374 10375 memcpy(atio->cdb_io.cdb_bytes, byte, atio->cdb_len); 10376 10377 atio->ccb_h.status |= CAM_CDB_RECVD; 10378 10379 if ((cmd->identify & MSG_IDENTIFY_DISCFLAG) == 0) { 10380 /* 10381 * We weren't allowed to disconnect. 10382 * We're hanging on the bus until a 10383 * continue target I/O comes in response 10384 * to this accept tio. 10385 */ 10386#ifdef AHD_DEBUG 10387 if ((ahd_debug & AHD_SHOW_TQIN) != 0) 10388 printf("Received Immediate Command %d:%d:%d - %p\n", 10389 initiator, target, lun, ahd->pending_device); 10390#endif 10391 ahd->pending_device = lstate; 10392 ahd_freeze_ccb((union ccb *)atio); 10393 atio->ccb_h.flags |= CAM_DIS_DISCONNECT; 10394 } 10395 xpt_done((union ccb*)atio); 10396 return (0); 10397} 10398 10399#endif 10400