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 *************************************/ 56 struct ahd_softc_tailq ahd_tailq = TAILQ_HEAD_INITIALIZER(ahd_tailq); 57 uint32_t ahd_attach_to_HostRAID_controllers = 1; 58 59 /***************************** Lookup Tables **********************************/ 60 char *ahd_chip_names[] = 61 { 62 "NONE", 63 "aic7901", 64 "aic7902", 65 "aic7901A" 66 }; 67 static const u_int num_chip_names = NUM_ELEMENTS(ahd_chip_names); 68 69 /* 70 * Hardware error codes. 71 */ 72 struct ahd_hard_error_entry { 73 uint8_t errno; 74 char *errmesg; 75 }; 76 77 static 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 }; 85 static const u_int num_errors = NUM_ELEMENTS(ahd_hard_errors); 86 87 static 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 */ 105 static 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 ***************************/ 111 static void ahd_handle_transmission_error(struct ahd_softc *ahd); 112 static void ahd_handle_lqiphase_error(struct ahd_softc *ahd, 113 u_int lqistat1); 114 static int ahd_handle_pkt_busfree(struct ahd_softc *ahd, 115 u_int busfreetime); 116 static int ahd_handle_nonpkt_busfree(struct ahd_softc *ahd); 117 static void ahd_handle_proto_violation(struct ahd_softc *ahd); 118 static void ahd_force_renegotiation(struct ahd_softc *ahd, 119 struct ahd_devinfo *devinfo); 120 121 static struct ahd_tmode_tstate* 122 ahd_alloc_tstate(struct ahd_softc *ahd, 123 u_int scsi_id, char channel); 124 #ifdef AHD_TARGET_MODE 125 static void ahd_free_tstate(struct ahd_softc *ahd, 126 u_int scsi_id, char channel, int force); 127 #endif 128 static 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); 133 static void ahd_update_neg_table(struct ahd_softc *ahd, 134 struct ahd_devinfo *devinfo, 135 struct ahd_transinfo *tinfo); 136 static void ahd_update_pending_scbs(struct ahd_softc *ahd); 137 static void ahd_fetch_devinfo(struct ahd_softc *ahd, 138 struct ahd_devinfo *devinfo); 139 static void ahd_scb_devinfo(struct ahd_softc *ahd, 140 struct ahd_devinfo *devinfo, 141 struct scb *scb); 142 static void ahd_setup_initiator_msgout(struct ahd_softc *ahd, 143 struct ahd_devinfo *devinfo, 144 struct scb *scb); 145 static void ahd_build_transfer_msg(struct ahd_softc *ahd, 146 struct ahd_devinfo *devinfo); 147 static void ahd_construct_sdtr(struct ahd_softc *ahd, 148 struct ahd_devinfo *devinfo, 149 u_int period, u_int offset); 150 static void ahd_construct_wdtr(struct ahd_softc *ahd, 151 struct ahd_devinfo *devinfo, 152 u_int bus_width); 153 static 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); 157 static void ahd_clear_msg_state(struct ahd_softc *ahd); 158 static void ahd_handle_message_phase(struct ahd_softc *ahd); 159 typedef enum { 160 AHDMSG_1B, 161 AHDMSG_2B, 162 AHDMSG_EXT 163 } ahd_msgtype; 164 static int ahd_sent_msg(struct ahd_softc *ahd, ahd_msgtype type, 165 u_int msgval, int full); 166 static int ahd_parse_msg(struct ahd_softc *ahd, 167 struct ahd_devinfo *devinfo); 168 static int ahd_handle_msg_reject(struct ahd_softc *ahd, 169 struct ahd_devinfo *devinfo); 170 static void ahd_handle_ign_wide_residue(struct ahd_softc *ahd, 171 struct ahd_devinfo *devinfo); 172 static void ahd_reinitialize_dataptrs(struct ahd_softc *ahd); 173 static 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 178 static void ahd_setup_target_msgin(struct ahd_softc *ahd, 179 struct ahd_devinfo *devinfo, 180 struct scb *scb); 181 #endif 182 183 static u_int ahd_sglist_size(struct ahd_softc *ahd); 184 static u_int ahd_sglist_allocsize(struct ahd_softc *ahd); 185 static bus_dmamap_callback_t 186 ahd_dmamap_cb; 187 static void ahd_initialize_hscbs(struct ahd_softc *ahd); 188 static int ahd_init_scbdata(struct ahd_softc *ahd); 189 static void ahd_fini_scbdata(struct ahd_softc *ahd); 190 static void ahd_setup_iocell_workaround(struct ahd_softc *ahd); 191 static void ahd_iocell_first_selection(struct ahd_softc *ahd); 192 static void ahd_add_col_list(struct ahd_softc *ahd, 193 struct scb *scb, u_int col_idx); 194 static void ahd_rem_col_list(struct ahd_softc *ahd, 195 struct scb *scb); 196 static void ahd_chip_init(struct ahd_softc *ahd); 197 static void ahd_qinfifo_requeue(struct ahd_softc *ahd, 198 struct scb *prev_scb, 199 struct scb *scb); 200 static int ahd_qinfifo_count(struct ahd_softc *ahd); 201 static 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); 207 static void ahd_stitch_tid_list(struct ahd_softc *ahd, 208 u_int tid_prev, u_int tid_cur, 209 u_int tid_next); 210 static void ahd_add_scb_to_free_list(struct ahd_softc *ahd, 211 u_int scbid); 212 static u_int ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid, 213 u_int prev, u_int next, u_int tid); 214 static void ahd_reset_current_bus(struct ahd_softc *ahd); 215 static ahd_callback_t ahd_reset_poll; 216 static ahd_callback_t ahd_stat_timer; 217 #ifdef AHD_DUMP_SEQ 218 static void ahd_dumpseq(struct ahd_softc *ahd); 219 #endif 220 static void ahd_loadseq(struct ahd_softc *ahd); 221 static int ahd_check_patch(struct ahd_softc *ahd, 222 struct patch **start_patch, 223 u_int start_instr, u_int *skip_addr); 224 static u_int ahd_resolve_seqaddr(struct ahd_softc *ahd, 225 u_int address); 226 static void ahd_download_instr(struct ahd_softc *ahd, 227 u_int instrptr, uint8_t *dconsts); 228 static int ahd_probe_stack_size(struct ahd_softc *ahd); 229 static int ahd_other_scb_timeout(struct ahd_softc *ahd, 230 struct scb *scb, 231 struct scb *other_scb); 232 static int ahd_scb_active_in_fifo(struct ahd_softc *ahd, 233 struct scb *scb); 234 static void ahd_run_data_fifo(struct ahd_softc *ahd, 235 struct scb *scb); 236 237 #ifdef AHD_TARGET_MODE 238 static 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); 243 static void ahd_update_scsiid(struct ahd_softc *ahd, 244 u_int targid_mask); 245 static int ahd_handle_target_cmd(struct ahd_softc *ahd, 246 struct target_cmd *cmd); 247 #endif 248 249 /******************************** Private Inlines *****************************/ 250 static __inline void ahd_assert_atn(struct ahd_softc *ahd); 251 static __inline int ahd_currently_packetized(struct ahd_softc *ahd); 252 static __inline int ahd_set_active_fifo(struct ahd_softc *ahd); 253 254 static __inline void 255 ahd_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 */ 266 static __inline int 267 ahd_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 } 288 289 static __inline int 290 ahd_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 */ 310 void 311 ahd_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 } 353 354 void 355 ahd_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 */ 378 void 379 ahd_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; 413 rescan_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 */ 590 static int 591 ahd_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 */ 619 static void 620 ahd_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) { 830 clrchn: 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 */ 853 void 854 ahd_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 *********************************/ 893 void 894 ahd_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 } 923 924 void 925 ahd_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 1537 void 1538 ahd_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 1815 static void 1816 ahd_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 2006 static void 2007 ahd_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 */ 2051 static int 2052 ahd_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 */ 2186 static int 2187 ahd_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 2465 static void 2466 ahd_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) { 2529 proto_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 */ 2570 static void 2571 ahd_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 2592 void 2593 ahd_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 */ 2716 void 2717 ahd_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 2745 uint32_t ahd_debug = AHD_DEBUG_OPTS; 2746 #endif 2747 void 2748 ahd_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 2772 void 2773 ahd_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 */ 2820 static struct ahd_tmode_tstate * 2821 ahd_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 */ 2862 static void 2863 ahd_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 */ 2888 void 2889 ahd_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 */ 2937 void 2938 ahd_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 */ 2976 void 2977 ahd_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 */ 3007 void 3008 ahd_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 */ 3037 int 3038 ahd_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 */ 3080 void 3081 ahd_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 */ 3226 void 3227 ahd_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 */ 3280 void 3281 ahd_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 3289 static void 3290 ahd_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 */ 3400 static void 3401 ahd_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 *****************************/ 3483 static void 3484 ahd_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 3518 void 3519 ahd_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 3525 struct ahd_phase_table_entry* 3526 ahd_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 3543 void 3544 ahd_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 3558 static void 3559 ahd_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 */ 3581 static void 3582 ahd_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 */ 3706 static void 3707 ahd_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 */ 3802 static void 3803 ahd_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 */ 3825 static void 3826 ahd_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 */ 3845 static void 3846 ahd_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 */ 3879 static void 3880 ahd_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 */ 3907 static void 3908 ahd_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 } 3922 reswitch: 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 */ 4247 static int 4248 ahd_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 */ 4296 static int 4297 ahd_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 */ 4714 static int 4715 ahd_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 */ 4885 static void 4886 ahd_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 */ 5035 static void 5036 ahd_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 */ 5117 static void 5118 ahd_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 5184 static void 5185 ahd_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 **********************************/ 5207 static u_int 5208 ahd_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 */ 5224 static u_int 5225 ahd_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 */ 5269 struct ahd_softc * 5270 ahd_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 5331 int 5332 ahd_softc_init(struct ahd_softc *ahd) 5333 { 5334 5335 ahd->unpause = 0; 5336 ahd->pause = PAUSE; 5337 return (0); 5338 } 5339 5340 void 5341 ahd_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 5392 void 5393 ahd_set_unit(struct ahd_softc *ahd, int unit) 5394 { 5395 ahd->unit = unit; 5396 } 5397 5398 void 5399 ahd_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 5406 void 5407 ahd_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 5482 void 5483 ahd_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 */ 5508 int 5509 ahd_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 */ 5612 int 5613 ahd_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 5636 static void 5637 ahd_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 5645 static void 5646 ahd_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 5661 static int 5662 ahd_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 5759 error_exit: 5760 5761 return (ENOMEM); 5762 } 5763 5764 static struct scb * 5765 ahd_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 5802 static void 5803 ahd_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 */ 5871 static void 5872 ahd_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 5889 static void 5890 ahd_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 ***********************************/ 5920 static void 5921 ahd_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 5940 static void 5941 ahd_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 */ 5974 struct scb * 5975 ahd_get_scb(struct ahd_softc *ahd, u_int col_idx) 5976 { 5977 struct scb *scb; 5978 int tries; 5979 5980 tries = 0; 5981 look_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 } 6003 found: 6004 scb->flags |= SCB_ACTIVE; 6005 return (scb); 6006 } 6007 6008 /* 6009 * Return an SCB resource to the free list. 6010 */ 6011 void 6012 ahd_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 6064 int 6065 ahd_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, &hscb_map->dmamap) != 0) { 6103 free(hscb_map, M_DEVBUF); 6104 return (0); 6105 } 6106 6107 SLIST_INSERT_HEAD(&scb_data->hscb_maps, hscb_map, links); 6108 6109 aic_dmamap_load(ahd, scb_data->hscb_dmat, hscb_map->dmamap, 6110 hscb_map->vaddr, PAGE_SIZE, ahd_dmamap_cb, 6111 &hscb_map->busaddr, /*flags*/0); 6112 6113 hscb = (struct hardware_scb *)hscb_map->vaddr; 6114 hscb_busaddr = hscb_map->busaddr; 6115 scb_data->scbs_left = PAGE_SIZE / sizeof(*hscb); 6116 } 6117 6118 if (scb_data->sgs_left != 0) { 6119 int offset; 6120 6121 offset = ((ahd_sglist_allocsize(ahd) / ahd_sglist_size(ahd)) 6122 - scb_data->sgs_left) * ahd_sglist_size(ahd); 6123 sg_map = SLIST_FIRST(&scb_data->sg_maps); 6124 segs = sg_map->vaddr + offset; 6125 sg_busaddr = sg_map->busaddr + offset; 6126 } else { 6127 sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT); 6128 6129 if (sg_map == NULL) 6130 return (0); 6131 6132 /* Allocate the next batch of S/G lists */ 6133 if (aic_dmamem_alloc(ahd, scb_data->sg_dmat, 6134 (void **)&sg_map->vaddr, 6135 BUS_DMA_NOWAIT, &sg_map->dmamap) != 0) { 6136 free(sg_map, M_DEVBUF); 6137 return (0); 6138 } 6139 6140 SLIST_INSERT_HEAD(&scb_data->sg_maps, sg_map, links); 6141 6142 aic_dmamap_load(ahd, scb_data->sg_dmat, sg_map->dmamap, 6143 sg_map->vaddr, ahd_sglist_allocsize(ahd), 6144 ahd_dmamap_cb, &sg_map->busaddr, /*flags*/0); 6145 6146 segs = sg_map->vaddr; 6147 sg_busaddr = sg_map->busaddr; 6148 scb_data->sgs_left = 6149 ahd_sglist_allocsize(ahd) / ahd_sglist_size(ahd); 6150 #ifdef AHD_DEBUG 6151 if (ahd_debug & AHD_SHOW_MEMORY) 6152 printf("Mapped SG data\n"); 6153 #endif 6154 } 6155 6156 if (scb_data->sense_left != 0) { 6157 int offset; 6158 6159 offset = PAGE_SIZE - (AHD_SENSE_BUFSIZE * scb_data->sense_left); 6160 sense_map = SLIST_FIRST(&scb_data->sense_maps); 6161 sense_data = sense_map->vaddr + offset; 6162 sense_busaddr = sense_map->busaddr + offset; 6163 } else { 6164 sense_map = malloc(sizeof(*sense_map), M_DEVBUF, M_NOWAIT); 6165 6166 if (sense_map == NULL) 6167 return (0); 6168 6169 /* Allocate the next batch of sense buffers */ 6170 if (aic_dmamem_alloc(ahd, scb_data->sense_dmat, 6171 (void **)&sense_map->vaddr, 6172 BUS_DMA_NOWAIT, &sense_map->dmamap) != 0) { 6173 free(sense_map, M_DEVBUF); 6174 return (0); 6175 } 6176 6177 SLIST_INSERT_HEAD(&scb_data->sense_maps, sense_map, links); 6178 6179 aic_dmamap_load(ahd, scb_data->sense_dmat, sense_map->dmamap, 6180 sense_map->vaddr, PAGE_SIZE, ahd_dmamap_cb, 6181 &sense_map->busaddr, /*flags*/0); 6182 6183 sense_data = sense_map->vaddr; 6184 sense_busaddr = sense_map->busaddr; 6185 scb_data->sense_left = PAGE_SIZE / AHD_SENSE_BUFSIZE; 6186 #ifdef AHD_DEBUG 6187 if (ahd_debug & AHD_SHOW_MEMORY) 6188 printf("Mapped sense data\n"); 6189 #endif 6190 } 6191 6192 newcount = MIN(scb_data->sense_left, scb_data->scbs_left); 6193 newcount = MIN(newcount, scb_data->sgs_left); 6194 newcount = MIN(newcount, (AHD_SCB_MAX_ALLOC - scb_data->numscbs)); 6195 scb_data->sense_left -= newcount; 6196 scb_data->scbs_left -= newcount; 6197 scb_data->sgs_left -= newcount; 6198 for (i = 0; i < newcount; i++) { 6199 struct scb_platform_data *pdata; 6200 u_int col_tag; 6201 #ifndef __linux__ 6202 int error; 6203 #endif 6204 6205 next_scb = (struct scb *)malloc(sizeof(*next_scb), 6206 M_DEVBUF, M_NOWAIT); 6207 if (next_scb == NULL) 6208 break; 6209 6210 pdata = (struct scb_platform_data *)malloc(sizeof(*pdata), 6211 M_DEVBUF, M_NOWAIT); 6212 if (pdata == NULL) { 6213 free(next_scb, M_DEVBUF); 6214 break; 6215 } 6216 next_scb->platform_data = pdata; 6217 next_scb->hscb_map = hscb_map; 6218 next_scb->sg_map = sg_map; 6219 next_scb->sense_map = sense_map; 6220 next_scb->sg_list = segs; 6221 next_scb->sense_data = sense_data; 6222 next_scb->sense_busaddr = sense_busaddr; 6223 memset(hscb, 0, sizeof(*hscb)); 6224 next_scb->hscb = hscb; 6225 hscb->hscb_busaddr = aic_htole32(hscb_busaddr); 6226 6227 /* 6228 * The sequencer always starts with the second entry. 6229 * The first entry is embedded in the scb. 6230 */ 6231 next_scb->sg_list_busaddr = sg_busaddr; 6232 if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) 6233 next_scb->sg_list_busaddr 6234 += sizeof(struct ahd_dma64_seg); 6235 else 6236 next_scb->sg_list_busaddr += sizeof(struct ahd_dma_seg); 6237 next_scb->ahd_softc = ahd; 6238 next_scb->flags = SCB_FLAG_NONE; 6239 #ifndef __linux__ 6240 error = aic_dmamap_create(ahd, ahd->buffer_dmat, /*flags*/0, 6241 &next_scb->dmamap); 6242 if (error != 0) { 6243 free(next_scb, M_DEVBUF); 6244 free(pdata, M_DEVBUF); 6245 break; 6246 } 6247 #endif 6248 next_scb->hscb->tag = aic_htole16(scb_data->numscbs); 6249 col_tag = scb_data->numscbs ^ 0x100; 6250 next_scb->col_scb = ahd_find_scb_by_tag(ahd, col_tag); 6251 if (next_scb->col_scb != NULL) 6252 next_scb->col_scb->col_scb = next_scb; 6253 aic_timer_init(&next_scb->io_timer); 6254 ahd_free_scb(ahd, next_scb); 6255 hscb++; 6256 hscb_busaddr += sizeof(*hscb); 6257 segs += ahd_sglist_size(ahd); 6258 sg_busaddr += ahd_sglist_size(ahd); 6259 sense_data += AHD_SENSE_BUFSIZE; 6260 sense_busaddr += AHD_SENSE_BUFSIZE; 6261 scb_data->numscbs++; 6262 } 6263 return (i); 6264 } 6265 6266 void 6267 ahd_controller_info(struct ahd_softc *ahd, char *buf) 6268 { 6269 const char *speed; 6270 const char *type; 6271 int len; 6272 6273 len = sprintf(buf, "%s: ", ahd_chip_names[ahd->chip & AHD_CHIPID_MASK]); 6274 buf += len; 6275 6276 speed = "Ultra320 "; 6277 if ((ahd->features & AHD_WIDE) != 0) { 6278 type = "Wide "; 6279 } else { 6280 type = "Single "; 6281 } 6282 len = sprintf(buf, "%s%sChannel %c, SCSI Id=%d, ", 6283 speed, type, ahd->channel, ahd->our_id); 6284 buf += len; 6285 6286 sprintf(buf, "%s, %d SCBs", ahd->bus_description, 6287 ahd->scb_data.maxhscbs); 6288 } 6289 6290 static const char *channel_strings[] = { 6291 "Primary Low", 6292 "Primary High", 6293 "Secondary Low", 6294 "Secondary High" 6295 }; 6296 6297 static const char *termstat_strings[] = { 6298 "Terminated Correctly", 6299 "Over Terminated", 6300 "Under Terminated", 6301 "Not Configured" 6302 }; 6303 6304 /* 6305 * Start the board, ready for normal operation 6306 */ 6307 int 6308 ahd_init(struct ahd_softc *ahd) 6309 { 6310 uint8_t *next_vaddr; 6311 bus_addr_t next_baddr; 6312 size_t driver_data_size; 6313 int i; 6314 int error; 6315 u_int warn_user; 6316 uint8_t current_sensing; 6317 uint8_t fstat; 6318 6319 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 6320 6321 ahd->stack_size = ahd_probe_stack_size(ahd); 6322 ahd->saved_stack = malloc(ahd->stack_size * sizeof(uint16_t), 6323 M_DEVBUF, M_NOWAIT); 6324 if (ahd->saved_stack == NULL) 6325 return (ENOMEM); 6326 6327 /* 6328 * Verify that the compiler hasn't over-agressively 6329 * padded important structures. 6330 */ 6331 if (sizeof(struct hardware_scb) != 64) 6332 panic("Hardware SCB size is incorrect"); 6333 6334 #ifdef AHD_DEBUG 6335 if ((ahd_debug & AHD_DEBUG_SEQUENCER) != 0) 6336 ahd->flags |= AHD_SEQUENCER_DEBUG; 6337 #endif 6338 6339 /* 6340 * Default to allowing initiator operations. 6341 */ 6342 ahd->flags |= AHD_INITIATORROLE; 6343 6344 /* 6345 * Only allow target mode features if this unit has them enabled. 6346 */ 6347 if ((AHD_TMODE_ENABLE & (0x1 << ahd->unit)) == 0) 6348 ahd->features &= ~AHD_TARGETMODE; 6349 6350 #ifndef __linux__ 6351 /* DMA tag for mapping buffers into device visible space. */ 6352 if (aic_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, 6353 /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, 6354 /*lowaddr*/ahd->flags & AHD_39BIT_ADDRESSING 6355 ? (bus_addr_t)0x7FFFFFFFFFULL 6356 : BUS_SPACE_MAXADDR_32BIT, 6357 /*highaddr*/BUS_SPACE_MAXADDR, 6358 /*filter*/NULL, /*filterarg*/NULL, 6359 /*maxsize*/(AHD_NSEG - 1) * PAGE_SIZE, 6360 /*nsegments*/AHD_NSEG, 6361 /*maxsegsz*/AHD_MAXTRANSFER_SIZE, 6362 /*flags*/BUS_DMA_ALLOCNOW, 6363 &ahd->buffer_dmat) != 0) { 6364 return (ENOMEM); 6365 } 6366 #endif 6367 6368 ahd->init_level++; 6369 6370 /* 6371 * DMA tag for our command fifos and other data in system memory 6372 * the card's sequencer must be able to access. For initiator 6373 * roles, we need to allocate space for the qoutfifo. When providing 6374 * for the target mode role, we must additionally provide space for 6375 * the incoming target command fifo. 6376 */ 6377 driver_data_size = AHD_SCB_MAX * sizeof(*ahd->qoutfifo) 6378 + sizeof(struct hardware_scb); 6379 if ((ahd->features & AHD_TARGETMODE) != 0) 6380 driver_data_size += AHD_TMODE_CMDS * sizeof(struct target_cmd); 6381 if ((ahd->bugs & AHD_PKT_BITBUCKET_BUG) != 0) 6382 driver_data_size += PKT_OVERRUN_BUFSIZE; 6383 if (aic_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, 6384 /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, 6385 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 6386 /*highaddr*/BUS_SPACE_MAXADDR, 6387 /*filter*/NULL, /*filterarg*/NULL, 6388 driver_data_size, 6389 /*nsegments*/1, 6390 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 6391 /*flags*/0, &ahd->shared_data_dmat) != 0) { 6392 return (ENOMEM); 6393 } 6394 6395 ahd->init_level++; 6396 6397 /* Allocation of driver data */ 6398 if (aic_dmamem_alloc(ahd, ahd->shared_data_dmat, 6399 (void **)&ahd->shared_data_map.vaddr, 6400 BUS_DMA_NOWAIT, 6401 &ahd->shared_data_map.dmamap) != 0) { 6402 return (ENOMEM); 6403 } 6404 6405 ahd->init_level++; 6406 6407 /* And permanently map it in */ 6408 aic_dmamap_load(ahd, ahd->shared_data_dmat, ahd->shared_data_map.dmamap, 6409 ahd->shared_data_map.vaddr, driver_data_size, 6410 ahd_dmamap_cb, &ahd->shared_data_map.busaddr, 6411 /*flags*/0); 6412 ahd->qoutfifo = (struct ahd_completion *)ahd->shared_data_map.vaddr; 6413 next_vaddr = (uint8_t *)&ahd->qoutfifo[AHD_QOUT_SIZE]; 6414 next_baddr = ahd->shared_data_map.busaddr 6415 + AHD_QOUT_SIZE*sizeof(struct ahd_completion); 6416 if ((ahd->features & AHD_TARGETMODE) != 0) { 6417 ahd->targetcmds = (struct target_cmd *)next_vaddr; 6418 next_vaddr += AHD_TMODE_CMDS * sizeof(struct target_cmd); 6419 next_baddr += AHD_TMODE_CMDS * sizeof(struct target_cmd); 6420 } 6421 6422 if ((ahd->bugs & AHD_PKT_BITBUCKET_BUG) != 0) { 6423 ahd->overrun_buf = next_vaddr; 6424 next_vaddr += PKT_OVERRUN_BUFSIZE; 6425 next_baddr += PKT_OVERRUN_BUFSIZE; 6426 } 6427 6428 /* 6429 * We need one SCB to serve as the "next SCB". Since the 6430 * tag identifier in this SCB will never be used, there is 6431 * no point in using a valid HSCB tag from an SCB pulled from 6432 * the standard free pool. So, we allocate this "sentinel" 6433 * specially from the DMA safe memory chunk used for the QOUTFIFO. 6434 */ 6435 ahd->next_queued_hscb = (struct hardware_scb *)next_vaddr; 6436 ahd->next_queued_hscb_map = &ahd->shared_data_map; 6437 ahd->next_queued_hscb->hscb_busaddr = aic_htole32(next_baddr); 6438 6439 ahd->init_level++; 6440 6441 /* Allocate SCB data now that buffer_dmat is initialized */ 6442 if (ahd_init_scbdata(ahd) != 0) 6443 return (ENOMEM); 6444 6445 if ((ahd->flags & AHD_INITIATORROLE) == 0) 6446 ahd->flags &= ~AHD_RESET_BUS_A; 6447 6448 /* 6449 * Before committing these settings to the chip, give 6450 * the OSM one last chance to modify our configuration. 6451 */ 6452 ahd_platform_init(ahd); 6453 6454 /* Bring up the chip. */ 6455 ahd_chip_init(ahd); 6456 6457 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 6458 6459 if ((ahd->flags & AHD_CURRENT_SENSING) == 0) 6460 goto init_done; 6461 6462 /* 6463 * Verify termination based on current draw and 6464 * warn user if the bus is over/under terminated. 6465 */ 6466 error = ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 6467 CURSENSE_ENB); 6468 if (error != 0) { 6469 printf("%s: current sensing timeout 1\n", ahd_name(ahd)); 6470 goto init_done; 6471 } 6472 for (i = 20, fstat = FLX_FSTAT_BUSY; 6473 (fstat & FLX_FSTAT_BUSY) != 0 && i; i--) { 6474 error = ahd_read_flexport(ahd, FLXADDR_FLEXSTAT, &fstat); 6475 if (error != 0) { 6476 printf("%s: current sensing timeout 2\n", 6477 ahd_name(ahd)); 6478 goto init_done; 6479 } 6480 } 6481 if (i == 0) { 6482 printf("%s: Timedout during current-sensing test\n", 6483 ahd_name(ahd)); 6484 goto init_done; 6485 } 6486 6487 /* Latch Current Sensing status. */ 6488 error = ahd_read_flexport(ahd, FLXADDR_CURRENT_STAT, ¤t_sensing); 6489 if (error != 0) { 6490 printf("%s: current sensing timeout 3\n", ahd_name(ahd)); 6491 goto init_done; 6492 } 6493 6494 /* Diable current sensing. */ 6495 ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0); 6496 6497 #ifdef AHD_DEBUG 6498 if ((ahd_debug & AHD_SHOW_TERMCTL) != 0) { 6499 printf("%s: current_sensing == 0x%x\n", 6500 ahd_name(ahd), current_sensing); 6501 } 6502 #endif 6503 warn_user = 0; 6504 for (i = 0; i < 4; i++, current_sensing >>= FLX_CSTAT_SHIFT) { 6505 u_int term_stat; 6506 6507 term_stat = (current_sensing & FLX_CSTAT_MASK); 6508 switch (term_stat) { 6509 case FLX_CSTAT_OVER: 6510 case FLX_CSTAT_UNDER: 6511 warn_user++; 6512 case FLX_CSTAT_INVALID: 6513 case FLX_CSTAT_OKAY: 6514 if (warn_user == 0 && bootverbose == 0) 6515 break; 6516 printf("%s: %s Channel %s\n", ahd_name(ahd), 6517 channel_strings[i], termstat_strings[term_stat]); 6518 break; 6519 } 6520 } 6521 if (warn_user) { 6522 printf("%s: WARNING. Termination is not configured correctly.\n" 6523 "%s: WARNING. SCSI bus operations may FAIL.\n", 6524 ahd_name(ahd), ahd_name(ahd)); 6525 AHD_CORRECTABLE_ERROR(ahd); 6526 } 6527 init_done: 6528 ahd_restart(ahd); 6529 aic_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_MS, 6530 ahd_stat_timer, ahd); 6531 return (0); 6532 } 6533 6534 /* 6535 * (Re)initialize chip state after a chip reset. 6536 */ 6537 static void 6538 ahd_chip_init(struct ahd_softc *ahd) 6539 { 6540 uint32_t busaddr; 6541 u_int sxfrctl1; 6542 u_int scsiseq_template; 6543 u_int wait; 6544 u_int i; 6545 u_int target; 6546 6547 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 6548 /* 6549 * Take the LED out of diagnostic mode 6550 */ 6551 ahd_outb(ahd, SBLKCTL, ahd_inb(ahd, SBLKCTL) & ~(DIAGLEDEN|DIAGLEDON)); 6552 6553 /* 6554 * Return HS_MAILBOX to its default value. 6555 */ 6556 ahd->hs_mailbox = 0; 6557 ahd_outb(ahd, HS_MAILBOX, 0); 6558 6559 /* Set the SCSI Id, SXFRCTL0, SXFRCTL1, and SIMODE1. */ 6560 ahd_outb(ahd, IOWNID, ahd->our_id); 6561 ahd_outb(ahd, TOWNID, ahd->our_id); 6562 sxfrctl1 = (ahd->flags & AHD_TERM_ENB_A) != 0 ? STPWEN : 0; 6563 sxfrctl1 |= (ahd->flags & AHD_SPCHK_ENB_A) != 0 ? ENSPCHK : 0; 6564 if ((ahd->bugs & AHD_LONG_SETIMO_BUG) 6565 && (ahd->seltime != STIMESEL_MIN)) { 6566 /* 6567 * The selection timer duration is twice as long 6568 * as it should be. Halve it by adding "1" to 6569 * the user specified setting. 6570 */ 6571 sxfrctl1 |= ahd->seltime + STIMESEL_BUG_ADJ; 6572 } else { 6573 sxfrctl1 |= ahd->seltime; 6574 } 6575 6576 ahd_outb(ahd, SXFRCTL0, DFON); 6577 ahd_outb(ahd, SXFRCTL1, sxfrctl1|ahd->seltime|ENSTIMER|ACTNEGEN); 6578 ahd_outb(ahd, SIMODE1, ENSELTIMO|ENSCSIRST|ENSCSIPERR); 6579 6580 /* 6581 * Now that termination is set, wait for up 6582 * to 500ms for our transceivers to settle. If 6583 * the adapter does not have a cable attached, 6584 * the transceivers may never settle, so don't 6585 * complain if we fail here. 6586 */ 6587 for (wait = 10000; 6588 (ahd_inb(ahd, SBLKCTL) & (ENAB40|ENAB20)) == 0 && wait; 6589 wait--) 6590 aic_delay(100); 6591 6592 /* Clear any false bus resets due to the transceivers settling */ 6593 ahd_outb(ahd, CLRSINT1, CLRSCSIRSTI); 6594 ahd_outb(ahd, CLRINT, CLRSCSIINT); 6595 6596 /* Initialize mode specific S/G state. */ 6597 for (i = 0; i < 2; i++) { 6598 ahd_set_modes(ahd, AHD_MODE_DFF0 + i, AHD_MODE_DFF0 + i); 6599 ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR); 6600 ahd_outb(ahd, SG_STATE, 0); 6601 ahd_outb(ahd, CLRSEQINTSRC, 0xFF); 6602 ahd_outb(ahd, SEQIMODE, 6603 ENSAVEPTRS|ENCFG4DATA|ENCFG4ISTAT 6604 |ENCFG4TSTAT|ENCFG4ICMD|ENCFG4TCMD); 6605 } 6606 6607 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 6608 ahd_outb(ahd, DSCOMMAND0, ahd_inb(ahd, DSCOMMAND0)|MPARCKEN|CACHETHEN); 6609 ahd_outb(ahd, DFF_THRSH, RD_DFTHRSH_75|WR_DFTHRSH_75); 6610 ahd_outb(ahd, SIMODE0, ENIOERR|ENOVERRUN); 6611 ahd_outb(ahd, SIMODE3, ENNTRAMPERR|ENOSRAMPERR); 6612 if ((ahd->bugs & AHD_BUSFREEREV_BUG) != 0) { 6613 ahd_outb(ahd, OPTIONMODE, AUTOACKEN|AUTO_MSGOUT_DE); 6614 } else { 6615 ahd_outb(ahd, OPTIONMODE, AUTOACKEN|BUSFREEREV|AUTO_MSGOUT_DE); 6616 } 6617 ahd_outb(ahd, SCSCHKN, CURRFIFODEF|WIDERESEN|SHVALIDSTDIS); 6618 if ((ahd->chip & AHD_BUS_MASK) == AHD_PCIX) 6619 /* 6620 * Do not issue a target abort when a split completion 6621 * error occurs. Let our PCIX interrupt handler deal 6622 * with it instead. H2A4 Razor #625 6623 */ 6624 ahd_outb(ahd, PCIXCTL, ahd_inb(ahd, PCIXCTL) | SPLTSTADIS); 6625 6626 if ((ahd->bugs & AHD_LQOOVERRUN_BUG) != 0) 6627 ahd_outb(ahd, LQOSCSCTL, LQONOCHKOVER); 6628 6629 /* 6630 * Tweak IOCELL settings. 6631 */ 6632 if ((ahd->flags & AHD_HP_BOARD) != 0) { 6633 for (i = 0; i < NUMDSPS; i++) { 6634 ahd_outb(ahd, DSPSELECT, i); 6635 ahd_outb(ahd, WRTBIASCTL, WRTBIASCTL_HP_DEFAULT); 6636 } 6637 #ifdef AHD_DEBUG 6638 if ((ahd_debug & AHD_SHOW_MISC) != 0) 6639 printf("%s: WRTBIASCTL now 0x%x\n", ahd_name(ahd), 6640 WRTBIASCTL_HP_DEFAULT); 6641 #endif 6642 } 6643 ahd_setup_iocell_workaround(ahd); 6644 6645 /* 6646 * Enable LQI Manager interrupts. 6647 */ 6648 ahd_outb(ahd, LQIMODE1, ENLQIPHASE_LQ|ENLQIPHASE_NLQ|ENLIQABORT 6649 | ENLQICRCI_LQ|ENLQICRCI_NLQ|ENLQIBADLQI 6650 | ENLQIOVERI_LQ|ENLQIOVERI_NLQ); 6651 ahd_outb(ahd, LQOMODE0, ENLQOATNLQ|ENLQOATNPKT|ENLQOTCRC); 6652 /* 6653 * We choose to have the sequencer catch LQOPHCHGINPKT errors 6654 * manually for the command phase at the start of a packetized 6655 * selection case. ENLQOBUSFREE should be made redundant by 6656 * the BUSFREE interrupt, but it seems that some LQOBUSFREE 6657 * events fail to assert the BUSFREE interrupt so we must 6658 * also enable LQOBUSFREE interrupts. 6659 */ 6660 ahd_outb(ahd, LQOMODE1, ENLQOBUSFREE); 6661 6662 /* 6663 * Setup sequencer interrupt handlers. 6664 */ 6665 ahd_outw(ahd, INTVEC1_ADDR, ahd_resolve_seqaddr(ahd, LABEL_seq_isr)); 6666 ahd_outw(ahd, INTVEC2_ADDR, ahd_resolve_seqaddr(ahd, LABEL_timer_isr)); 6667 6668 /* 6669 * Setup SCB Offset registers. 6670 */ 6671 if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0) { 6672 ahd_outb(ahd, LUNPTR, offsetof(struct hardware_scb, 6673 pkt_long_lun)); 6674 } else { 6675 ahd_outb(ahd, LUNPTR, offsetof(struct hardware_scb, lun)); 6676 } 6677 ahd_outb(ahd, CMDLENPTR, offsetof(struct hardware_scb, cdb_len)); 6678 ahd_outb(ahd, ATTRPTR, offsetof(struct hardware_scb, task_attribute)); 6679 ahd_outb(ahd, FLAGPTR, offsetof(struct hardware_scb, task_management)); 6680 ahd_outb(ahd, CMDPTR, offsetof(struct hardware_scb, 6681 shared_data.idata.cdb)); 6682 ahd_outb(ahd, QNEXTPTR, 6683 offsetof(struct hardware_scb, next_hscb_busaddr)); 6684 ahd_outb(ahd, ABRTBITPTR, MK_MESSAGE_BIT_OFFSET); 6685 ahd_outb(ahd, ABRTBYTEPTR, offsetof(struct hardware_scb, control)); 6686 if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0) { 6687 ahd_outb(ahd, LUNLEN, 6688 sizeof(ahd->next_queued_hscb->pkt_long_lun) - 1); 6689 } else { 6690 ahd_outb(ahd, LUNLEN, LUNLEN_SINGLE_LEVEL_LUN); 6691 } 6692 ahd_outb(ahd, CDBLIMIT, SCB_CDB_LEN_PTR - 1); 6693 ahd_outb(ahd, MAXCMD, 0xFF); 6694 ahd_outb(ahd, SCBAUTOPTR, 6695 AUSCBPTR_EN | offsetof(struct hardware_scb, tag)); 6696 6697 /* We haven't been enabled for target mode yet. */ 6698 ahd_outb(ahd, MULTARGID, 0); 6699 ahd_outb(ahd, MULTARGID + 1, 0); 6700 6701 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 6702 /* Initialize the negotiation table. */ 6703 if ((ahd->features & AHD_NEW_IOCELL_OPTS) == 0) { 6704 /* 6705 * Clear the spare bytes in the neg table to avoid 6706 * spurious parity errors. 6707 */ 6708 for (target = 0; target < AHD_NUM_TARGETS; target++) { 6709 ahd_outb(ahd, NEGOADDR, target); 6710 ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_PER_DEV0); 6711 for (i = 0; i < AHD_NUM_PER_DEV_ANNEXCOLS; i++) 6712 ahd_outb(ahd, ANNEXDAT, 0); 6713 } 6714 } 6715 for (target = 0; target < AHD_NUM_TARGETS; target++) { 6716 struct ahd_devinfo devinfo; 6717 struct ahd_initiator_tinfo *tinfo; 6718 struct ahd_tmode_tstate *tstate; 6719 6720 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 6721 target, &tstate); 6722 ahd_compile_devinfo(&devinfo, ahd->our_id, 6723 target, CAM_LUN_WILDCARD, 6724 'A', ROLE_INITIATOR); 6725 ahd_update_neg_table(ahd, &devinfo, &tinfo->curr); 6726 } 6727 6728 ahd_outb(ahd, CLRSINT3, NTRAMPERR|OSRAMPERR); 6729 ahd_outb(ahd, CLRINT, CLRSCSIINT); 6730 6731 #ifdef NEEDS_MORE_TESTING 6732 /* 6733 * Always enable abort on incoming L_Qs if this feature is 6734 * supported. We use this to catch invalid SCB references. 6735 */ 6736 if ((ahd->bugs & AHD_ABORT_LQI_BUG) == 0) 6737 ahd_outb(ahd, LQCTL1, ABORTPENDING); 6738 else 6739 #endif 6740 ahd_outb(ahd, LQCTL1, 0); 6741 6742 /* All of our queues are empty */ 6743 ahd->qoutfifonext = 0; 6744 ahd->qoutfifonext_valid_tag = QOUTFIFO_ENTRY_VALID; 6745 ahd_outb(ahd, QOUTFIFO_ENTRY_VALID_TAG, QOUTFIFO_ENTRY_VALID); 6746 for (i = 0; i < AHD_QOUT_SIZE; i++) 6747 ahd->qoutfifo[i].valid_tag = 0; 6748 ahd_sync_qoutfifo(ahd, BUS_DMASYNC_PREREAD); 6749 6750 ahd->qinfifonext = 0; 6751 for (i = 0; i < AHD_QIN_SIZE; i++) 6752 ahd->qinfifo[i] = SCB_LIST_NULL; 6753 6754 if ((ahd->features & AHD_TARGETMODE) != 0) { 6755 /* All target command blocks start out invalid. */ 6756 for (i = 0; i < AHD_TMODE_CMDS; i++) 6757 ahd->targetcmds[i].cmd_valid = 0; 6758 ahd_sync_tqinfifo(ahd, BUS_DMASYNC_PREREAD); 6759 ahd->tqinfifonext = 1; 6760 ahd_outb(ahd, KERNEL_TQINPOS, ahd->tqinfifonext - 1); 6761 ahd_outb(ahd, TQINPOS, ahd->tqinfifonext); 6762 } 6763 6764 /* Initialize Scratch Ram. */ 6765 ahd_outb(ahd, SEQ_FLAGS, 0); 6766 ahd_outb(ahd, SEQ_FLAGS2, 0); 6767 6768 /* We don't have any waiting selections */ 6769 ahd_outw(ahd, WAITING_TID_HEAD, SCB_LIST_NULL); 6770 ahd_outw(ahd, WAITING_TID_TAIL, SCB_LIST_NULL); 6771 ahd_outw(ahd, MK_MESSAGE_SCB, SCB_LIST_NULL); 6772 ahd_outw(ahd, MK_MESSAGE_SCSIID, 0xFF); 6773 for (i = 0; i < AHD_NUM_TARGETS; i++) 6774 ahd_outw(ahd, WAITING_SCB_TAILS + (2 * i), SCB_LIST_NULL); 6775 6776 /* 6777 * Nobody is waiting to be DMAed into the QOUTFIFO. 6778 */ 6779 ahd_outw(ahd, COMPLETE_SCB_HEAD, SCB_LIST_NULL); 6780 ahd_outw(ahd, COMPLETE_SCB_DMAINPROG_HEAD, SCB_LIST_NULL); 6781 ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, SCB_LIST_NULL); 6782 ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, SCB_LIST_NULL); 6783 ahd_outw(ahd, COMPLETE_ON_QFREEZE_HEAD, SCB_LIST_NULL); 6784 6785 /* 6786 * The Freeze Count is 0. 6787 */ 6788 ahd->qfreeze_cnt = 0; 6789 ahd_outw(ahd, QFREEZE_COUNT, 0); 6790 ahd_outw(ahd, KERNEL_QFREEZE_COUNT, 0); 6791 6792 /* 6793 * Tell the sequencer where it can find our arrays in memory. 6794 */ 6795 busaddr = ahd->shared_data_map.busaddr; 6796 ahd_outl(ahd, SHARED_DATA_ADDR, busaddr); 6797 ahd_outl(ahd, QOUTFIFO_NEXT_ADDR, busaddr); 6798 6799 /* 6800 * Setup the allowed SCSI Sequences based on operational mode. 6801 * If we are a target, we'll enable select in operations once 6802 * we've had a lun enabled. 6803 */ 6804 scsiseq_template = ENAUTOATNP; 6805 if ((ahd->flags & AHD_INITIATORROLE) != 0) 6806 scsiseq_template |= ENRSELI; 6807 ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq_template); 6808 6809 /* There are no busy SCBs yet. */ 6810 for (target = 0; target < AHD_NUM_TARGETS; target++) { 6811 int lun; 6812 6813 for (lun = 0; lun < AHD_NUM_LUNS_NONPKT; lun++) 6814 ahd_unbusy_tcl(ahd, BUILD_TCL_RAW(target, 'A', lun)); 6815 } 6816 6817 /* 6818 * Initialize the group code to command length table. 6819 * Vendor Unique codes are set to 0 so we only capture 6820 * the first byte of the cdb. These can be overridden 6821 * when target mode is enabled. 6822 */ 6823 ahd_outb(ahd, CMDSIZE_TABLE, 5); 6824 ahd_outb(ahd, CMDSIZE_TABLE + 1, 9); 6825 ahd_outb(ahd, CMDSIZE_TABLE + 2, 9); 6826 ahd_outb(ahd, CMDSIZE_TABLE + 3, 0); 6827 ahd_outb(ahd, CMDSIZE_TABLE + 4, 15); 6828 ahd_outb(ahd, CMDSIZE_TABLE + 5, 11); 6829 ahd_outb(ahd, CMDSIZE_TABLE + 6, 0); 6830 ahd_outb(ahd, CMDSIZE_TABLE + 7, 0); 6831 6832 /* Tell the sequencer of our initial queue positions */ 6833 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 6834 ahd_outb(ahd, QOFF_CTLSTA, SCB_QSIZE_512); 6835 ahd->qinfifonext = 0; 6836 ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); 6837 ahd_set_hescb_qoff(ahd, 0); 6838 ahd_set_snscb_qoff(ahd, 0); 6839 ahd_set_sescb_qoff(ahd, 0); 6840 ahd_set_sdscb_qoff(ahd, 0); 6841 6842 /* 6843 * Tell the sequencer which SCB will be the next one it receives. 6844 */ 6845 busaddr = aic_le32toh(ahd->next_queued_hscb->hscb_busaddr); 6846 ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); 6847 6848 /* 6849 * Default to coalescing disabled. 6850 */ 6851 ahd_outw(ahd, INT_COALESCING_CMDCOUNT, 0); 6852 ahd_outw(ahd, CMDS_PENDING, 0); 6853 ahd_update_coalescing_values(ahd, ahd->int_coalescing_timer, 6854 ahd->int_coalescing_maxcmds, 6855 ahd->int_coalescing_mincmds); 6856 ahd_enable_coalescing(ahd, FALSE); 6857 6858 ahd_loadseq(ahd); 6859 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 6860 } 6861 6862 /* 6863 * Setup default device and controller settings. 6864 * This should only be called if our probe has 6865 * determined that no configuration data is available. 6866 */ 6867 int 6868 ahd_default_config(struct ahd_softc *ahd) 6869 { 6870 int targ; 6871 6872 ahd->our_id = 7; 6873 6874 /* 6875 * Allocate a tstate to house information for our 6876 * initiator presence on the bus as well as the user 6877 * data for any target mode initiator. 6878 */ 6879 if (ahd_alloc_tstate(ahd, ahd->our_id, 'A') == NULL) { 6880 printf("%s: unable to allocate ahd_tmode_tstate. " 6881 "Failing attach\n", ahd_name(ahd)); 6882 AHD_FATAL_ERROR(ahd); 6883 return (ENOMEM); 6884 } 6885 6886 for (targ = 0; targ < AHD_NUM_TARGETS; targ++) { 6887 struct ahd_devinfo devinfo; 6888 struct ahd_initiator_tinfo *tinfo; 6889 struct ahd_tmode_tstate *tstate; 6890 uint16_t target_mask; 6891 6892 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 6893 targ, &tstate); 6894 /* 6895 * We support SPC2 and SPI4. 6896 */ 6897 tinfo->user.protocol_version = 4; 6898 tinfo->user.transport_version = 4; 6899 6900 target_mask = 0x01 << targ; 6901 ahd->user_discenable |= target_mask; 6902 tstate->discenable |= target_mask; 6903 ahd->user_tagenable |= target_mask; 6904 #ifdef AHD_FORCE_160 6905 tinfo->user.period = AHD_SYNCRATE_DT; 6906 #else 6907 tinfo->user.period = AHD_SYNCRATE_160; 6908 #endif 6909 tinfo->user.offset = MAX_OFFSET; 6910 tinfo->user.ppr_options = MSG_EXT_PPR_RD_STRM 6911 | MSG_EXT_PPR_WR_FLOW 6912 | MSG_EXT_PPR_HOLD_MCS 6913 | MSG_EXT_PPR_IU_REQ 6914 | MSG_EXT_PPR_QAS_REQ 6915 | MSG_EXT_PPR_DT_REQ; 6916 if ((ahd->features & AHD_RTI) != 0) 6917 tinfo->user.ppr_options |= MSG_EXT_PPR_RTI; 6918 6919 tinfo->user.width = MSG_EXT_WDTR_BUS_16_BIT; 6920 6921 /* 6922 * Start out Async/Narrow/Untagged and with 6923 * conservative protocol support. 6924 */ 6925 tinfo->goal.protocol_version = 2; 6926 tinfo->goal.transport_version = 2; 6927 tinfo->curr.protocol_version = 2; 6928 tinfo->curr.transport_version = 2; 6929 ahd_compile_devinfo(&devinfo, ahd->our_id, 6930 targ, CAM_LUN_WILDCARD, 6931 'A', ROLE_INITIATOR); 6932 tstate->tagenable &= ~target_mask; 6933 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 6934 AHD_TRANS_CUR|AHD_TRANS_GOAL, /*paused*/TRUE); 6935 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0, 6936 /*ppr_options*/0, AHD_TRANS_CUR|AHD_TRANS_GOAL, 6937 /*paused*/TRUE); 6938 } 6939 return (0); 6940 } 6941 6942 /* 6943 * Parse device configuration information. 6944 */ 6945 int 6946 ahd_parse_cfgdata(struct ahd_softc *ahd, struct seeprom_config *sc) 6947 { 6948 int targ; 6949 int max_targ; 6950 6951 max_targ = sc->max_targets & CFMAXTARG; 6952 ahd->our_id = sc->brtime_id & CFSCSIID; 6953 6954 /* 6955 * Allocate a tstate to house information for our 6956 * initiator presence on the bus as well as the user 6957 * data for any target mode initiator. 6958 */ 6959 if (ahd_alloc_tstate(ahd, ahd->our_id, 'A') == NULL) { 6960 printf("%s: unable to allocate ahd_tmode_tstate. " 6961 "Failing attach\n", ahd_name(ahd)); 6962 AHD_FATAL_ERROR(ahd); 6963 return (ENOMEM); 6964 } 6965 6966 for (targ = 0; targ < max_targ; targ++) { 6967 struct ahd_devinfo devinfo; 6968 struct ahd_initiator_tinfo *tinfo; 6969 struct ahd_transinfo *user_tinfo; 6970 struct ahd_tmode_tstate *tstate; 6971 uint16_t target_mask; 6972 6973 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 6974 targ, &tstate); 6975 user_tinfo = &tinfo->user; 6976 6977 /* 6978 * We support SPC2 and SPI4. 6979 */ 6980 tinfo->user.protocol_version = 4; 6981 tinfo->user.transport_version = 4; 6982 6983 target_mask = 0x01 << targ; 6984 ahd->user_discenable &= ~target_mask; 6985 tstate->discenable &= ~target_mask; 6986 ahd->user_tagenable &= ~target_mask; 6987 if (sc->device_flags[targ] & CFDISC) { 6988 tstate->discenable |= target_mask; 6989 ahd->user_discenable |= target_mask; 6990 ahd->user_tagenable |= target_mask; 6991 } else { 6992 /* 6993 * Cannot be packetized without disconnection. 6994 */ 6995 sc->device_flags[targ] &= ~CFPACKETIZED; 6996 } 6997 6998 user_tinfo->ppr_options = 0; 6999 user_tinfo->period = (sc->device_flags[targ] & CFXFER); 7000 if (user_tinfo->period < CFXFER_ASYNC) { 7001 if (user_tinfo->period <= AHD_PERIOD_10MHz) 7002 user_tinfo->ppr_options |= MSG_EXT_PPR_DT_REQ; 7003 user_tinfo->offset = MAX_OFFSET; 7004 } else { 7005 user_tinfo->offset = 0; 7006 user_tinfo->period = AHD_ASYNC_XFER_PERIOD; 7007 } 7008 #ifdef AHD_FORCE_160 7009 if (user_tinfo->period <= AHD_SYNCRATE_160) 7010 user_tinfo->period = AHD_SYNCRATE_DT; 7011 #endif 7012 7013 if ((sc->device_flags[targ] & CFPACKETIZED) != 0) { 7014 user_tinfo->ppr_options |= MSG_EXT_PPR_RD_STRM 7015 | MSG_EXT_PPR_WR_FLOW 7016 | MSG_EXT_PPR_HOLD_MCS 7017 | MSG_EXT_PPR_IU_REQ; 7018 if ((ahd->features & AHD_RTI) != 0) 7019 user_tinfo->ppr_options |= MSG_EXT_PPR_RTI; 7020 } 7021 7022 if ((sc->device_flags[targ] & CFQAS) != 0) 7023 user_tinfo->ppr_options |= MSG_EXT_PPR_QAS_REQ; 7024 7025 if ((sc->device_flags[targ] & CFWIDEB) != 0) 7026 user_tinfo->width = MSG_EXT_WDTR_BUS_16_BIT; 7027 else 7028 user_tinfo->width = MSG_EXT_WDTR_BUS_8_BIT; 7029 #ifdef AHD_DEBUG 7030 if ((ahd_debug & AHD_SHOW_MISC) != 0) 7031 printf("(%d): %x:%x:%x:%x\n", targ, user_tinfo->width, 7032 user_tinfo->period, user_tinfo->offset, 7033 user_tinfo->ppr_options); 7034 #endif 7035 /* 7036 * Start out Async/Narrow/Untagged and with 7037 * conservative protocol support. 7038 */ 7039 tstate->tagenable &= ~target_mask; 7040 tinfo->goal.protocol_version = 2; 7041 tinfo->goal.transport_version = 2; 7042 tinfo->curr.protocol_version = 2; 7043 tinfo->curr.transport_version = 2; 7044 ahd_compile_devinfo(&devinfo, ahd->our_id, 7045 targ, CAM_LUN_WILDCARD, 7046 'A', ROLE_INITIATOR); 7047 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 7048 AHD_TRANS_CUR|AHD_TRANS_GOAL, /*paused*/TRUE); 7049 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0, 7050 /*ppr_options*/0, AHD_TRANS_CUR|AHD_TRANS_GOAL, 7051 /*paused*/TRUE); 7052 } 7053 7054 ahd->flags &= ~AHD_SPCHK_ENB_A; 7055 if (sc->bios_control & CFSPARITY) 7056 ahd->flags |= AHD_SPCHK_ENB_A; 7057 7058 ahd->flags &= ~AHD_RESET_BUS_A; 7059 if (sc->bios_control & CFRESETB) 7060 ahd->flags |= AHD_RESET_BUS_A; 7061 7062 ahd->flags &= ~AHD_EXTENDED_TRANS_A; 7063 if (sc->bios_control & CFEXTEND) 7064 ahd->flags |= AHD_EXTENDED_TRANS_A; 7065 7066 ahd->flags &= ~AHD_BIOS_ENABLED; 7067 if ((sc->bios_control & CFBIOSSTATE) == CFBS_ENABLED) 7068 ahd->flags |= AHD_BIOS_ENABLED; 7069 7070 ahd->flags &= ~AHD_STPWLEVEL_A; 7071 if ((sc->adapter_control & CFSTPWLEVEL) != 0) 7072 ahd->flags |= AHD_STPWLEVEL_A; 7073 7074 return (0); 7075 } 7076 7077 /* 7078 * Parse device configuration information. 7079 */ 7080 int 7081 ahd_parse_vpddata(struct ahd_softc *ahd, struct vpd_config *vpd) 7082 { 7083 int error; 7084 7085 error = ahd_verify_vpd_cksum(vpd); 7086 if (error == 0) 7087 return (EINVAL); 7088 if ((vpd->bios_flags & VPDBOOTHOST) != 0) 7089 ahd->flags |= AHD_BOOT_CHANNEL; 7090 return (0); 7091 } 7092 7093 void 7094 ahd_intr_enable(struct ahd_softc *ahd, int enable) 7095 { 7096 u_int hcntrl; 7097 7098 hcntrl = ahd_inb(ahd, HCNTRL); 7099 hcntrl &= ~INTEN; 7100 ahd->pause &= ~INTEN; 7101 ahd->unpause &= ~INTEN; 7102 if (enable) { 7103 hcntrl |= INTEN; 7104 ahd->pause |= INTEN; 7105 ahd->unpause |= INTEN; 7106 } 7107 ahd_outb(ahd, HCNTRL, hcntrl); 7108 } 7109 7110 void 7111 ahd_update_coalescing_values(struct ahd_softc *ahd, u_int timer, u_int maxcmds, 7112 u_int mincmds) 7113 { 7114 if (timer > AHD_TIMER_MAX_US) 7115 timer = AHD_TIMER_MAX_US; 7116 ahd->int_coalescing_timer = timer; 7117 7118 if (maxcmds > AHD_INT_COALESCING_MAXCMDS_MAX) 7119 maxcmds = AHD_INT_COALESCING_MAXCMDS_MAX; 7120 if (mincmds > AHD_INT_COALESCING_MINCMDS_MAX) 7121 mincmds = AHD_INT_COALESCING_MINCMDS_MAX; 7122 ahd->int_coalescing_maxcmds = maxcmds; 7123 ahd_outw(ahd, INT_COALESCING_TIMER, timer / AHD_TIMER_US_PER_TICK); 7124 ahd_outb(ahd, INT_COALESCING_MAXCMDS, -maxcmds); 7125 ahd_outb(ahd, INT_COALESCING_MINCMDS, -mincmds); 7126 } 7127 7128 void 7129 ahd_enable_coalescing(struct ahd_softc *ahd, int enable) 7130 { 7131 7132 ahd->hs_mailbox &= ~ENINT_COALESCE; 7133 if (enable) 7134 ahd->hs_mailbox |= ENINT_COALESCE; 7135 ahd_outb(ahd, HS_MAILBOX, ahd->hs_mailbox); 7136 ahd_flush_device_writes(ahd); 7137 ahd_run_qoutfifo(ahd); 7138 } 7139 7140 /* 7141 * Ensure that the card is paused in a location 7142 * outside of all critical sections and that all 7143 * pending work is completed prior to returning. 7144 * This routine should only be called from outside 7145 * an interrupt context. 7146 */ 7147 void 7148 ahd_pause_and_flushwork(struct ahd_softc *ahd) 7149 { 7150 u_int intstat; 7151 u_int maxloops; 7152 7153 maxloops = 1000; 7154 ahd->flags |= AHD_ALL_INTERRUPTS; 7155 ahd_pause(ahd); 7156 /* 7157 * Freeze the outgoing selections. We do this only 7158 * until we are safely paused without further selections 7159 * pending. 7160 */ 7161 ahd->qfreeze_cnt--; 7162 ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); 7163 ahd_outb(ahd, SEQ_FLAGS2, ahd_inb(ahd, SEQ_FLAGS2) | SELECTOUT_QFROZEN); 7164 do { 7165 7166 ahd_unpause(ahd); 7167 /* 7168 * Give the sequencer some time to service 7169 * any active selections. 7170 */ 7171 aic_delay(500); 7172 7173 ahd_intr(ahd); 7174 ahd_pause(ahd); 7175 intstat = ahd_inb(ahd, INTSTAT); 7176 if ((intstat & INT_PEND) == 0) { 7177 ahd_clear_critical_section(ahd); 7178 intstat = ahd_inb(ahd, INTSTAT); 7179 } 7180 } while (--maxloops 7181 && (intstat != 0xFF || (ahd->features & AHD_REMOVABLE) == 0) 7182 && ((intstat & INT_PEND) != 0 7183 || (ahd_inb(ahd, SCSISEQ0) & ENSELO) != 0 7184 || (ahd_inb(ahd, SSTAT0) & (SELDO|SELINGO)) != 0)); 7185 7186 if (maxloops == 0) { 7187 printf("Infinite interrupt loop, INTSTAT = %x", 7188 ahd_inb(ahd, INTSTAT)); 7189 AHD_FATAL_ERROR(ahd); 7190 } 7191 ahd->qfreeze_cnt++; 7192 ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); 7193 7194 ahd_flush_qoutfifo(ahd); 7195 7196 ahd_platform_flushwork(ahd); 7197 ahd->flags &= ~AHD_ALL_INTERRUPTS; 7198 } 7199 7200 int 7201 ahd_suspend(struct ahd_softc *ahd) 7202 { 7203 7204 ahd_pause_and_flushwork(ahd); 7205 7206 if (LIST_FIRST(&ahd->pending_scbs) != NULL) { 7207 ahd_unpause(ahd); 7208 return (EBUSY); 7209 } 7210 ahd_shutdown(ahd); 7211 return (0); 7212 } 7213 7214 int 7215 ahd_resume(struct ahd_softc *ahd) 7216 { 7217 7218 ahd_reset(ahd, /*reinit*/TRUE); 7219 ahd_intr_enable(ahd, TRUE); 7220 ahd_restart(ahd); 7221 return (0); 7222 } 7223 7224 /************************** Busy Target Table *********************************/ 7225 /* 7226 * Set SCBPTR to the SCB that contains the busy 7227 * table entry for TCL. Return the offset into 7228 * the SCB that contains the entry for TCL. 7229 * saved_scbid is dereferenced and set to the 7230 * scbid that should be restored once manipualtion 7231 * of the TCL entry is complete. 7232 */ 7233 static __inline u_int 7234 ahd_index_busy_tcl(struct ahd_softc *ahd, u_int *saved_scbid, u_int tcl) 7235 { 7236 /* 7237 * Index to the SCB that contains the busy entry. 7238 */ 7239 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7240 *saved_scbid = ahd_get_scbptr(ahd); 7241 ahd_set_scbptr(ahd, TCL_LUN(tcl) 7242 | ((TCL_TARGET_OFFSET(tcl) & 0xC) << 4)); 7243 7244 /* 7245 * And now calculate the SCB offset to the entry. 7246 * Each entry is 2 bytes wide, hence the 7247 * multiplication by 2. 7248 */ 7249 return (((TCL_TARGET_OFFSET(tcl) & 0x3) << 1) + SCB_DISCONNECTED_LISTS); 7250 } 7251 7252 /* 7253 * Return the untagged transaction id for a given target/channel lun. 7254 */ 7255 u_int 7256 ahd_find_busy_tcl(struct ahd_softc *ahd, u_int tcl) 7257 { 7258 u_int scbid; 7259 u_int scb_offset; 7260 u_int saved_scbptr; 7261 7262 scb_offset = ahd_index_busy_tcl(ahd, &saved_scbptr, tcl); 7263 scbid = ahd_inw_scbram(ahd, scb_offset); 7264 ahd_set_scbptr(ahd, saved_scbptr); 7265 return (scbid); 7266 } 7267 7268 void 7269 ahd_busy_tcl(struct ahd_softc *ahd, u_int tcl, u_int scbid) 7270 { 7271 u_int scb_offset; 7272 u_int saved_scbptr; 7273 7274 scb_offset = ahd_index_busy_tcl(ahd, &saved_scbptr, tcl); 7275 ahd_outw(ahd, scb_offset, scbid); 7276 ahd_set_scbptr(ahd, saved_scbptr); 7277 } 7278 7279 /************************** SCB and SCB queue management **********************/ 7280 int 7281 ahd_match_scb(struct ahd_softc *ahd, struct scb *scb, int target, 7282 char channel, int lun, u_int tag, role_t role) 7283 { 7284 int targ = SCB_GET_TARGET(ahd, scb); 7285 char chan = SCB_GET_CHANNEL(ahd, scb); 7286 int slun = SCB_GET_LUN(scb); 7287 int match; 7288 7289 match = ((chan == channel) || (channel == ALL_CHANNELS)); 7290 if (match != 0) 7291 match = ((targ == target) || (target == CAM_TARGET_WILDCARD)); 7292 if (match != 0) 7293 match = ((lun == slun) || (lun == CAM_LUN_WILDCARD)); 7294 if (match != 0) { 7295 #ifdef AHD_TARGET_MODE 7296 int group; 7297 7298 group = XPT_FC_GROUP(scb->io_ctx->ccb_h.func_code); 7299 if (role == ROLE_INITIATOR) { 7300 match = (group != XPT_FC_GROUP_TMODE) 7301 && ((tag == SCB_GET_TAG(scb)) 7302 || (tag == SCB_LIST_NULL)); 7303 } else if (role == ROLE_TARGET) { 7304 match = (group == XPT_FC_GROUP_TMODE) 7305 && ((tag == scb->io_ctx->csio.tag_id) 7306 || (tag == SCB_LIST_NULL)); 7307 } 7308 #else /* !AHD_TARGET_MODE */ 7309 match = ((tag == SCB_GET_TAG(scb)) || (tag == SCB_LIST_NULL)); 7310 #endif /* AHD_TARGET_MODE */ 7311 } 7312 7313 return match; 7314 } 7315 7316 void 7317 ahd_freeze_devq(struct ahd_softc *ahd, struct scb *scb) 7318 { 7319 int target; 7320 char channel; 7321 int lun; 7322 7323 target = SCB_GET_TARGET(ahd, scb); 7324 lun = SCB_GET_LUN(scb); 7325 channel = SCB_GET_CHANNEL(ahd, scb); 7326 7327 ahd_search_qinfifo(ahd, target, channel, lun, 7328 /*tag*/SCB_LIST_NULL, ROLE_UNKNOWN, 7329 CAM_REQUEUE_REQ, SEARCH_COMPLETE); 7330 7331 ahd_platform_freeze_devq(ahd, scb); 7332 } 7333 7334 void 7335 ahd_qinfifo_requeue_tail(struct ahd_softc *ahd, struct scb *scb) 7336 { 7337 struct scb *prev_scb; 7338 ahd_mode_state saved_modes; 7339 7340 saved_modes = ahd_save_modes(ahd); 7341 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 7342 prev_scb = NULL; 7343 if (ahd_qinfifo_count(ahd) != 0) { 7344 u_int prev_tag; 7345 u_int prev_pos; 7346 7347 prev_pos = AHD_QIN_WRAP(ahd->qinfifonext - 1); 7348 prev_tag = ahd->qinfifo[prev_pos]; 7349 prev_scb = ahd_lookup_scb(ahd, prev_tag); 7350 } 7351 ahd_qinfifo_requeue(ahd, prev_scb, scb); 7352 ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); 7353 ahd_restore_modes(ahd, saved_modes); 7354 } 7355 7356 static void 7357 ahd_qinfifo_requeue(struct ahd_softc *ahd, struct scb *prev_scb, 7358 struct scb *scb) 7359 { 7360 if (prev_scb == NULL) { 7361 uint32_t busaddr; 7362 7363 busaddr = aic_le32toh(scb->hscb->hscb_busaddr); 7364 ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); 7365 } else { 7366 prev_scb->hscb->next_hscb_busaddr = scb->hscb->hscb_busaddr; 7367 ahd_sync_scb(ahd, prev_scb, 7368 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 7369 } 7370 ahd->qinfifo[AHD_QIN_WRAP(ahd->qinfifonext)] = SCB_GET_TAG(scb); 7371 ahd->qinfifonext++; 7372 scb->hscb->next_hscb_busaddr = ahd->next_queued_hscb->hscb_busaddr; 7373 ahd_sync_scb(ahd, scb, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 7374 } 7375 7376 static int 7377 ahd_qinfifo_count(struct ahd_softc *ahd) 7378 { 7379 u_int qinpos; 7380 u_int wrap_qinpos; 7381 u_int wrap_qinfifonext; 7382 7383 AHD_ASSERT_MODES(ahd, AHD_MODE_CCHAN_MSK, AHD_MODE_CCHAN_MSK); 7384 qinpos = ahd_get_snscb_qoff(ahd); 7385 wrap_qinpos = AHD_QIN_WRAP(qinpos); 7386 wrap_qinfifonext = AHD_QIN_WRAP(ahd->qinfifonext); 7387 if (wrap_qinfifonext >= wrap_qinpos) 7388 return (wrap_qinfifonext - wrap_qinpos); 7389 else 7390 return (wrap_qinfifonext 7391 + NUM_ELEMENTS(ahd->qinfifo) - wrap_qinpos); 7392 } 7393 7394 void 7395 ahd_reset_cmds_pending(struct ahd_softc *ahd) 7396 { 7397 struct scb *scb; 7398 ahd_mode_state saved_modes; 7399 u_int pending_cmds; 7400 7401 saved_modes = ahd_save_modes(ahd); 7402 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 7403 7404 /* 7405 * Don't count any commands as outstanding that the 7406 * sequencer has already marked for completion. 7407 */ 7408 ahd_flush_qoutfifo(ahd); 7409 7410 pending_cmds = 0; 7411 LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { 7412 pending_cmds++; 7413 } 7414 ahd_outw(ahd, CMDS_PENDING, pending_cmds - ahd_qinfifo_count(ahd)); 7415 ahd_restore_modes(ahd, saved_modes); 7416 ahd->flags &= ~AHD_UPDATE_PEND_CMDS; 7417 } 7418 7419 void 7420 ahd_done_with_status(struct ahd_softc *ahd, struct scb *scb, uint32_t status) 7421 { 7422 cam_status ostat; 7423 cam_status cstat; 7424 7425 ostat = aic_get_transaction_status(scb); 7426 if (ostat == CAM_REQ_INPROG) 7427 aic_set_transaction_status(scb, status); 7428 cstat = aic_get_transaction_status(scb); 7429 if (cstat != CAM_REQ_CMP) 7430 aic_freeze_scb(scb); 7431 ahd_done(ahd, scb); 7432 } 7433 7434 int 7435 ahd_search_qinfifo(struct ahd_softc *ahd, int target, char channel, 7436 int lun, u_int tag, role_t role, uint32_t status, 7437 ahd_search_action action) 7438 { 7439 struct scb *scb; 7440 struct scb *mk_msg_scb; 7441 struct scb *prev_scb; 7442 ahd_mode_state saved_modes; 7443 u_int qinstart; 7444 u_int qinpos; 7445 u_int qintail; 7446 u_int tid_next; 7447 u_int tid_prev; 7448 u_int scbid; 7449 u_int seq_flags2; 7450 u_int savedscbptr; 7451 uint32_t busaddr; 7452 int found; 7453 int targets; 7454 7455 /* Must be in CCHAN mode */ 7456 saved_modes = ahd_save_modes(ahd); 7457 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 7458 7459 /* 7460 * Halt any pending SCB DMA. The sequencer will reinitiate 7461 * this dma if the qinfifo is not empty once we unpause. 7462 */ 7463 if ((ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN|CCSCBDIR)) 7464 == (CCARREN|CCSCBEN|CCSCBDIR)) { 7465 ahd_outb(ahd, CCSCBCTL, 7466 ahd_inb(ahd, CCSCBCTL) & ~(CCARREN|CCSCBEN)); 7467 while ((ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN)) != 0) 7468 ; 7469 } 7470 /* Determine sequencer's position in the qinfifo. */ 7471 qintail = AHD_QIN_WRAP(ahd->qinfifonext); 7472 qinstart = ahd_get_snscb_qoff(ahd); 7473 qinpos = AHD_QIN_WRAP(qinstart); 7474 found = 0; 7475 prev_scb = NULL; 7476 7477 if (action == SEARCH_PRINT) { 7478 printf("qinstart = %d qinfifonext = %d\nQINFIFO:", 7479 qinstart, ahd->qinfifonext); 7480 } 7481 7482 /* 7483 * Start with an empty queue. Entries that are not chosen 7484 * for removal will be re-added to the queue as we go. 7485 */ 7486 ahd->qinfifonext = qinstart; 7487 busaddr = aic_le32toh(ahd->next_queued_hscb->hscb_busaddr); 7488 ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); 7489 7490 while (qinpos != qintail) { 7491 scb = ahd_lookup_scb(ahd, ahd->qinfifo[qinpos]); 7492 if (scb == NULL) { 7493 printf("qinpos = %d, SCB index = %d\n", 7494 qinpos, ahd->qinfifo[qinpos]); 7495 AHD_FATAL_ERROR(ahd); 7496 panic("Loop 1\n"); 7497 } 7498 7499 if (ahd_match_scb(ahd, scb, target, channel, lun, tag, role)) { 7500 /* 7501 * We found an scb that needs to be acted on. 7502 */ 7503 found++; 7504 switch (action) { 7505 case SEARCH_COMPLETE: 7506 if ((scb->flags & SCB_ACTIVE) == 0) 7507 printf("Inactive SCB in qinfifo\n"); 7508 ahd_done_with_status(ahd, scb, status); 7509 /* FALLTHROUGH */ 7510 case SEARCH_REMOVE: 7511 break; 7512 case SEARCH_PRINT: 7513 printf(" 0x%x", ahd->qinfifo[qinpos]); 7514 /* FALLTHROUGH */ 7515 case SEARCH_COUNT: 7516 ahd_qinfifo_requeue(ahd, prev_scb, scb); 7517 prev_scb = scb; 7518 break; 7519 } 7520 } else { 7521 ahd_qinfifo_requeue(ahd, prev_scb, scb); 7522 prev_scb = scb; 7523 } 7524 qinpos = AHD_QIN_WRAP(qinpos+1); 7525 } 7526 7527 ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); 7528 7529 if (action == SEARCH_PRINT) 7530 printf("\nWAITING_TID_QUEUES:\n"); 7531 7532 /* 7533 * Search waiting for selection lists. We traverse the 7534 * list of "their ids" waiting for selection and, if 7535 * appropriate, traverse the SCBs of each "their id" 7536 * looking for matches. 7537 */ 7538 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 7539 seq_flags2 = ahd_inb(ahd, SEQ_FLAGS2); 7540 if ((seq_flags2 & PENDING_MK_MESSAGE) != 0) { 7541 scbid = ahd_inw(ahd, MK_MESSAGE_SCB); 7542 mk_msg_scb = ahd_lookup_scb(ahd, scbid); 7543 } else 7544 mk_msg_scb = NULL; 7545 savedscbptr = ahd_get_scbptr(ahd); 7546 tid_next = ahd_inw(ahd, WAITING_TID_HEAD); 7547 tid_prev = SCB_LIST_NULL; 7548 targets = 0; 7549 for (scbid = tid_next; !SCBID_IS_NULL(scbid); scbid = tid_next) { 7550 u_int tid_head; 7551 u_int tid_tail; 7552 7553 targets++; 7554 if (targets > AHD_NUM_TARGETS) 7555 panic("TID LIST LOOP"); 7556 7557 if (scbid >= ahd->scb_data.numscbs) { 7558 printf("%s: Waiting TID List inconsistency. " 7559 "SCB index == 0x%x, yet numscbs == 0x%x.", 7560 ahd_name(ahd), scbid, ahd->scb_data.numscbs); 7561 ahd_dump_card_state(ahd); 7562 panic("for safety"); 7563 } 7564 scb = ahd_lookup_scb(ahd, scbid); 7565 if (scb == NULL) { 7566 printf("%s: SCB = 0x%x Not Active!\n", 7567 ahd_name(ahd), scbid); 7568 panic("Waiting TID List traversal\n"); 7569 } 7570 ahd_set_scbptr(ahd, scbid); 7571 tid_next = ahd_inw_scbram(ahd, SCB_NEXT2); 7572 if (ahd_match_scb(ahd, scb, target, channel, CAM_LUN_WILDCARD, 7573 SCB_LIST_NULL, ROLE_UNKNOWN) == 0) { 7574 tid_prev = scbid; 7575 continue; 7576 } 7577 7578 /* 7579 * We found a list of scbs that needs to be searched. 7580 */ 7581 if (action == SEARCH_PRINT) 7582 printf(" %d ( ", SCB_GET_TARGET(ahd, scb)); 7583 tid_head = scbid; 7584 found += ahd_search_scb_list(ahd, target, channel, 7585 lun, tag, role, status, 7586 action, &tid_head, &tid_tail, 7587 SCB_GET_TARGET(ahd, scb)); 7588 /* 7589 * Check any MK_MESSAGE SCB that is still waiting to 7590 * enter this target's waiting for selection queue. 7591 */ 7592 if (mk_msg_scb != NULL 7593 && ahd_match_scb(ahd, mk_msg_scb, target, channel, 7594 lun, tag, role)) { 7595 7596 /* 7597 * We found an scb that needs to be acted on. 7598 */ 7599 found++; 7600 switch (action) { 7601 case SEARCH_COMPLETE: 7602 if ((mk_msg_scb->flags & SCB_ACTIVE) == 0) 7603 printf("Inactive SCB pending MK_MSG\n"); 7604 ahd_done_with_status(ahd, mk_msg_scb, status); 7605 /* FALLTHROUGH */ 7606 case SEARCH_REMOVE: 7607 { 7608 u_int tail_offset; 7609 7610 printf("Removing MK_MSG scb\n"); 7611 7612 /* 7613 * Reset our tail to the tail of the 7614 * main per-target list. 7615 */ 7616 tail_offset = WAITING_SCB_TAILS 7617 + (2 * SCB_GET_TARGET(ahd, mk_msg_scb)); 7618 ahd_outw(ahd, tail_offset, tid_tail); 7619 7620 seq_flags2 &= ~PENDING_MK_MESSAGE; 7621 ahd_outb(ahd, SEQ_FLAGS2, seq_flags2); 7622 ahd_outw(ahd, CMDS_PENDING, 7623 ahd_inw(ahd, CMDS_PENDING)-1); 7624 mk_msg_scb = NULL; 7625 break; 7626 } 7627 case SEARCH_PRINT: 7628 printf(" 0x%x", SCB_GET_TAG(scb)); 7629 /* FALLTHROUGH */ 7630 case SEARCH_COUNT: 7631 break; 7632 } 7633 } 7634 7635 if (mk_msg_scb != NULL 7636 && SCBID_IS_NULL(tid_head) 7637 && ahd_match_scb(ahd, scb, target, channel, CAM_LUN_WILDCARD, 7638 SCB_LIST_NULL, ROLE_UNKNOWN)) { 7639 7640 /* 7641 * When removing the last SCB for a target 7642 * queue with a pending MK_MESSAGE scb, we 7643 * must queue the MK_MESSAGE scb. 7644 */ 7645 printf("Queueing mk_msg_scb\n"); 7646 tid_head = ahd_inw(ahd, MK_MESSAGE_SCB); 7647 seq_flags2 &= ~PENDING_MK_MESSAGE; 7648 ahd_outb(ahd, SEQ_FLAGS2, seq_flags2); 7649 mk_msg_scb = NULL; 7650 } 7651 if (tid_head != scbid) 7652 ahd_stitch_tid_list(ahd, tid_prev, tid_head, tid_next); 7653 if (!SCBID_IS_NULL(tid_head)) 7654 tid_prev = tid_head; 7655 if (action == SEARCH_PRINT) 7656 printf(")\n"); 7657 } 7658 7659 /* Restore saved state. */ 7660 ahd_set_scbptr(ahd, savedscbptr); 7661 ahd_restore_modes(ahd, saved_modes); 7662 return (found); 7663 } 7664 7665 static int 7666 ahd_search_scb_list(struct ahd_softc *ahd, int target, char channel, 7667 int lun, u_int tag, role_t role, uint32_t status, 7668 ahd_search_action action, u_int *list_head, 7669 u_int *list_tail, u_int tid) 7670 { 7671 struct scb *scb; 7672 u_int scbid; 7673 u_int next; 7674 u_int prev; 7675 int found; 7676 7677 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7678 found = 0; 7679 prev = SCB_LIST_NULL; 7680 next = *list_head; 7681 *list_tail = SCB_LIST_NULL; 7682 for (scbid = next; !SCBID_IS_NULL(scbid); scbid = next) { 7683 if (scbid >= ahd->scb_data.numscbs) { 7684 printf("%s:SCB List inconsistency. " 7685 "SCB == 0x%x, yet numscbs == 0x%x.", 7686 ahd_name(ahd), scbid, ahd->scb_data.numscbs); 7687 ahd_dump_card_state(ahd); 7688 panic("for safety"); 7689 } 7690 scb = ahd_lookup_scb(ahd, scbid); 7691 if (scb == NULL) { 7692 printf("%s: SCB = %d Not Active!\n", 7693 ahd_name(ahd), scbid); 7694 panic("Waiting List traversal\n"); 7695 } 7696 ahd_set_scbptr(ahd, scbid); 7697 *list_tail = scbid; 7698 next = ahd_inw_scbram(ahd, SCB_NEXT); 7699 if (ahd_match_scb(ahd, scb, target, channel, 7700 lun, SCB_LIST_NULL, role) == 0) { 7701 prev = scbid; 7702 continue; 7703 } 7704 found++; 7705 switch (action) { 7706 case SEARCH_COMPLETE: 7707 if ((scb->flags & SCB_ACTIVE) == 0) 7708 printf("Inactive SCB in Waiting List\n"); 7709 ahd_done_with_status(ahd, scb, status); 7710 /* FALLTHROUGH */ 7711 case SEARCH_REMOVE: 7712 ahd_rem_wscb(ahd, scbid, prev, next, tid); 7713 *list_tail = prev; 7714 if (SCBID_IS_NULL(prev)) 7715 *list_head = next; 7716 break; 7717 case SEARCH_PRINT: 7718 printf("0x%x ", scbid); 7719 case SEARCH_COUNT: 7720 prev = scbid; 7721 break; 7722 } 7723 if (found > AHD_SCB_MAX) 7724 panic("SCB LIST LOOP"); 7725 } 7726 if (action == SEARCH_COMPLETE 7727 || action == SEARCH_REMOVE) 7728 ahd_outw(ahd, CMDS_PENDING, ahd_inw(ahd, CMDS_PENDING) - found); 7729 return (found); 7730 } 7731 7732 static void 7733 ahd_stitch_tid_list(struct ahd_softc *ahd, u_int tid_prev, 7734 u_int tid_cur, u_int tid_next) 7735 { 7736 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7737 7738 if (SCBID_IS_NULL(tid_cur)) { 7739 7740 /* Bypass current TID list */ 7741 if (SCBID_IS_NULL(tid_prev)) { 7742 ahd_outw(ahd, WAITING_TID_HEAD, tid_next); 7743 } else { 7744 ahd_set_scbptr(ahd, tid_prev); 7745 ahd_outw(ahd, SCB_NEXT2, tid_next); 7746 } 7747 if (SCBID_IS_NULL(tid_next)) 7748 ahd_outw(ahd, WAITING_TID_TAIL, tid_prev); 7749 } else { 7750 7751 /* Stitch through tid_cur */ 7752 if (SCBID_IS_NULL(tid_prev)) { 7753 ahd_outw(ahd, WAITING_TID_HEAD, tid_cur); 7754 } else { 7755 ahd_set_scbptr(ahd, tid_prev); 7756 ahd_outw(ahd, SCB_NEXT2, tid_cur); 7757 } 7758 ahd_set_scbptr(ahd, tid_cur); 7759 ahd_outw(ahd, SCB_NEXT2, tid_next); 7760 7761 if (SCBID_IS_NULL(tid_next)) 7762 ahd_outw(ahd, WAITING_TID_TAIL, tid_cur); 7763 } 7764 } 7765 7766 /* 7767 * Manipulate the waiting for selection list and return the 7768 * scb that follows the one that we remove. 7769 */ 7770 static u_int 7771 ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid, 7772 u_int prev, u_int next, u_int tid) 7773 { 7774 u_int tail_offset; 7775 7776 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7777 if (!SCBID_IS_NULL(prev)) { 7778 ahd_set_scbptr(ahd, prev); 7779 ahd_outw(ahd, SCB_NEXT, next); 7780 } 7781 7782 /* 7783 * SCBs that have MK_MESSAGE set in them may 7784 * cause the tail pointer to be updated without 7785 * setting the next pointer of the previous tail. 7786 * Only clear the tail if the removed SCB was 7787 * the tail. 7788 */ 7789 tail_offset = WAITING_SCB_TAILS + (2 * tid); 7790 if (SCBID_IS_NULL(next) 7791 && ahd_inw(ahd, tail_offset) == scbid) 7792 ahd_outw(ahd, tail_offset, prev); 7793 7794 ahd_add_scb_to_free_list(ahd, scbid); 7795 return (next); 7796 } 7797 7798 /* 7799 * Add the SCB as selected by SCBPTR onto the on chip list of 7800 * free hardware SCBs. This list is empty/unused if we are not 7801 * performing SCB paging. 7802 */ 7803 static void 7804 ahd_add_scb_to_free_list(struct ahd_softc *ahd, u_int scbid) 7805 { 7806 /* XXX Need some other mechanism to designate "free". */ 7807 /* 7808 * Invalidate the tag so that our abort 7809 * routines don't think it's active. 7810 ahd_outb(ahd, SCB_TAG, SCB_LIST_NULL); 7811 */ 7812 } 7813 7814 /******************************** Error Handling ******************************/ 7815 /* 7816 * Abort all SCBs that match the given description (target/channel/lun/tag), 7817 * setting their status to the passed in status if the status has not already 7818 * been modified from CAM_REQ_INPROG. This routine assumes that the sequencer 7819 * is paused before it is called. 7820 */ 7821 int 7822 ahd_abort_scbs(struct ahd_softc *ahd, int target, char channel, 7823 int lun, u_int tag, role_t role, uint32_t status) 7824 { 7825 struct scb *scbp; 7826 struct scb *scbp_next; 7827 u_int i, j; 7828 u_int maxtarget; 7829 u_int minlun; 7830 u_int maxlun; 7831 int found; 7832 ahd_mode_state saved_modes; 7833 7834 /* restore this when we're done */ 7835 saved_modes = ahd_save_modes(ahd); 7836 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 7837 7838 found = ahd_search_qinfifo(ahd, target, channel, lun, SCB_LIST_NULL, 7839 role, CAM_REQUEUE_REQ, SEARCH_COMPLETE); 7840 7841 /* 7842 * Clean out the busy target table for any untagged commands. 7843 */ 7844 i = 0; 7845 maxtarget = 16; 7846 if (target != CAM_TARGET_WILDCARD) { 7847 i = target; 7848 if (channel == 'B') 7849 i += 8; 7850 maxtarget = i + 1; 7851 } 7852 7853 if (lun == CAM_LUN_WILDCARD) { 7854 minlun = 0; 7855 maxlun = AHD_NUM_LUNS_NONPKT; 7856 } else if (lun >= AHD_NUM_LUNS_NONPKT) { 7857 minlun = maxlun = 0; 7858 } else { 7859 minlun = lun; 7860 maxlun = lun + 1; 7861 } 7862 7863 if (role != ROLE_TARGET) { 7864 for (;i < maxtarget; i++) { 7865 for (j = minlun;j < maxlun; j++) { 7866 u_int scbid; 7867 u_int tcl; 7868 7869 tcl = BUILD_TCL_RAW(i, 'A', j); 7870 scbid = ahd_find_busy_tcl(ahd, tcl); 7871 scbp = ahd_lookup_scb(ahd, scbid); 7872 if (scbp == NULL 7873 || ahd_match_scb(ahd, scbp, target, channel, 7874 lun, tag, role) == 0) 7875 continue; 7876 ahd_unbusy_tcl(ahd, BUILD_TCL_RAW(i, 'A', j)); 7877 } 7878 } 7879 } 7880 7881 /* 7882 * Don't abort commands that have already completed, 7883 * but haven't quite made it up to the host yet. 7884 */ 7885 ahd_flush_qoutfifo(ahd); 7886 7887 /* 7888 * Go through the pending CCB list and look for 7889 * commands for this target that are still active. 7890 * These are other tagged commands that were 7891 * disconnected when the reset occurred. 7892 */ 7893 scbp_next = LIST_FIRST(&ahd->pending_scbs); 7894 while (scbp_next != NULL) { 7895 scbp = scbp_next; 7896 scbp_next = LIST_NEXT(scbp, pending_links); 7897 if (ahd_match_scb(ahd, scbp, target, channel, lun, tag, role)) { 7898 cam_status ostat; 7899 7900 ostat = aic_get_transaction_status(scbp); 7901 if (ostat == CAM_REQ_INPROG) 7902 aic_set_transaction_status(scbp, status); 7903 if (aic_get_transaction_status(scbp) != CAM_REQ_CMP) 7904 aic_freeze_scb(scbp); 7905 if ((scbp->flags & SCB_ACTIVE) == 0) 7906 printf("Inactive SCB on pending list\n"); 7907 ahd_done(ahd, scbp); 7908 found++; 7909 } 7910 } 7911 ahd_restore_modes(ahd, saved_modes); 7912 ahd_platform_abort_scbs(ahd, target, channel, lun, tag, role, status); 7913 ahd->flags |= AHD_UPDATE_PEND_CMDS; 7914 return found; 7915 } 7916 7917 static void 7918 ahd_reset_current_bus(struct ahd_softc *ahd) 7919 { 7920 uint8_t scsiseq; 7921 7922 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7923 ahd_outb(ahd, SIMODE1, ahd_inb(ahd, SIMODE1) & ~ENSCSIRST); 7924 scsiseq = ahd_inb(ahd, SCSISEQ0) & ~(ENSELO|ENARBO|SCSIRSTO); 7925 ahd_outb(ahd, SCSISEQ0, scsiseq | SCSIRSTO); 7926 ahd_flush_device_writes(ahd); 7927 aic_delay(AHD_BUSRESET_DELAY); 7928 /* Turn off the bus reset */ 7929 ahd_outb(ahd, SCSISEQ0, scsiseq); 7930 ahd_flush_device_writes(ahd); 7931 aic_delay(AHD_BUSRESET_DELAY); 7932 if ((ahd->bugs & AHD_SCSIRST_BUG) != 0) { 7933 /* 7934 * 2A Razor #474 7935 * Certain chip state is not cleared for 7936 * SCSI bus resets that we initiate, so 7937 * we must reset the chip. 7938 */ 7939 ahd_reset(ahd, /*reinit*/TRUE); 7940 ahd_intr_enable(ahd, /*enable*/TRUE); 7941 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 7942 } 7943 7944 ahd_clear_intstat(ahd); 7945 } 7946 7947 int 7948 ahd_reset_channel(struct ahd_softc *ahd, char channel, int initiate_reset) 7949 { 7950 struct ahd_devinfo devinfo; 7951 u_int initiator; 7952 u_int target; 7953 u_int max_scsiid; 7954 int found; 7955 u_int fifo; 7956 u_int next_fifo; 7957 7958 ahd->pending_device = NULL; 7959 7960 ahd_compile_devinfo(&devinfo, 7961 CAM_TARGET_WILDCARD, 7962 CAM_TARGET_WILDCARD, 7963 CAM_LUN_WILDCARD, 7964 channel, ROLE_UNKNOWN); 7965 ahd_pause(ahd); 7966 7967 /* Make sure the sequencer is in a safe location. */ 7968 ahd_clear_critical_section(ahd); 7969 7970 #ifdef AHD_TARGET_MODE 7971 if ((ahd->flags & AHD_TARGETROLE) != 0) { 7972 ahd_run_tqinfifo(ahd, /*paused*/TRUE); 7973 } 7974 #endif 7975 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 7976 7977 /* 7978 * Disable selections so no automatic hardware 7979 * functions will modify chip state. 7980 */ 7981 ahd_outb(ahd, SCSISEQ0, 0); 7982 ahd_outb(ahd, SCSISEQ1, 0); 7983 7984 /* 7985 * Safely shut down our DMA engines. Always start with 7986 * the FIFO that is not currently active (if any are 7987 * actively connected). 7988 */ 7989 next_fifo = fifo = ahd_inb(ahd, DFFSTAT) & CURRFIFO; 7990 if (next_fifo > CURRFIFO_1) 7991 /* If disconneced, arbitrarily start with FIFO1. */ 7992 next_fifo = fifo = 0; 7993 do { 7994 next_fifo ^= CURRFIFO_1; 7995 ahd_set_modes(ahd, next_fifo, next_fifo); 7996 ahd_outb(ahd, DFCNTRL, 7997 ahd_inb(ahd, DFCNTRL) & ~(SCSIEN|HDMAEN)); 7998 while ((ahd_inb(ahd, DFCNTRL) & HDMAENACK) != 0) 7999 aic_delay(10); 8000 /* 8001 * Set CURRFIFO to the now inactive channel. 8002 */ 8003 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 8004 ahd_outb(ahd, DFFSTAT, next_fifo); 8005 } while (next_fifo != fifo); 8006 8007 /* 8008 * Reset the bus if we are initiating this reset 8009 */ 8010 ahd_clear_msg_state(ahd); 8011 ahd_outb(ahd, SIMODE1, 8012 ahd_inb(ahd, SIMODE1) & ~(ENBUSFREE|ENSCSIRST)); 8013 8014 if (initiate_reset) 8015 ahd_reset_current_bus(ahd); 8016 8017 ahd_clear_intstat(ahd); 8018 8019 /* 8020 * Clean up all the state information for the 8021 * pending transactions on this bus. 8022 */ 8023 found = ahd_abort_scbs(ahd, CAM_TARGET_WILDCARD, channel, 8024 CAM_LUN_WILDCARD, SCB_LIST_NULL, 8025 ROLE_UNKNOWN, CAM_SCSI_BUS_RESET); 8026 8027 /* 8028 * Cleanup anything left in the FIFOs. 8029 */ 8030 ahd_clear_fifo(ahd, 0); 8031 ahd_clear_fifo(ahd, 1); 8032 8033 /* 8034 * Revert to async/narrow transfers until we renegotiate. 8035 */ 8036 max_scsiid = (ahd->features & AHD_WIDE) ? 15 : 7; 8037 for (target = 0; target <= max_scsiid; target++) { 8038 8039 if (ahd->enabled_targets[target] == NULL) 8040 continue; 8041 for (initiator = 0; initiator <= max_scsiid; initiator++) { 8042 struct ahd_devinfo devinfo; 8043 8044 ahd_compile_devinfo(&devinfo, target, initiator, 8045 CAM_LUN_WILDCARD, 8046 'A', ROLE_UNKNOWN); 8047 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 8048 AHD_TRANS_CUR, /*paused*/TRUE); 8049 ahd_set_syncrate(ahd, &devinfo, /*period*/0, 8050 /*offset*/0, /*ppr_options*/0, 8051 AHD_TRANS_CUR, /*paused*/TRUE); 8052 } 8053 } 8054 8055 #ifdef AHD_TARGET_MODE 8056 max_scsiid = (ahd->features & AHD_WIDE) ? 15 : 7; 8057 8058 /* 8059 * Send an immediate notify ccb to all target more peripheral 8060 * drivers affected by this action. 8061 */ 8062 for (target = 0; target <= max_scsiid; target++) { 8063 struct ahd_tmode_tstate* tstate; 8064 u_int lun; 8065 8066 tstate = ahd->enabled_targets[target]; 8067 if (tstate == NULL) 8068 continue; 8069 for (lun = 0; lun < AHD_NUM_LUNS; lun++) { 8070 struct ahd_tmode_lstate* lstate; 8071 8072 lstate = tstate->enabled_luns[lun]; 8073 if (lstate == NULL) 8074 continue; 8075 8076 ahd_queue_lstate_event(ahd, lstate, CAM_TARGET_WILDCARD, 8077 EVENT_TYPE_BUS_RESET, /*arg*/0); 8078 ahd_send_lstate_events(ahd, lstate); 8079 } 8080 } 8081 #endif 8082 /* Notify the XPT that a bus reset occurred */ 8083 ahd_send_async(ahd, devinfo.channel, CAM_TARGET_WILDCARD, 8084 CAM_LUN_WILDCARD, AC_BUS_RESET, NULL); 8085 ahd_restart(ahd); 8086 /* 8087 * Freeze the SIMQ until our poller can determine that 8088 * the bus reset has really gone away. We set the initial 8089 * timer to 0 to have the check performed as soon as possible 8090 * from the timer context. 8091 */ 8092 if ((ahd->flags & AHD_RESET_POLL_ACTIVE) == 0) { 8093 ahd->flags |= AHD_RESET_POLL_ACTIVE; 8094 aic_freeze_simq(ahd); 8095 aic_timer_reset(&ahd->reset_timer, 0, ahd_reset_poll, ahd); 8096 } 8097 return (found); 8098 } 8099 8100 8101 #define AHD_RESET_POLL_MS 1 8102 static void 8103 ahd_reset_poll(void *arg) 8104 { 8105 struct ahd_softc *ahd = (struct ahd_softc *)arg; 8106 u_int scsiseq1; 8107 8108 ahd_lock(ahd); 8109 ahd_pause(ahd); 8110 ahd_update_modes(ahd); 8111 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 8112 ahd_outb(ahd, CLRSINT1, CLRSCSIRSTI); 8113 if ((ahd_inb(ahd, SSTAT1) & SCSIRSTI) != 0) { 8114 aic_timer_reset(&ahd->reset_timer, AHD_RESET_POLL_MS, 8115 ahd_reset_poll, ahd); 8116 ahd_unpause(ahd); 8117 ahd_unlock(ahd); 8118 return; 8119 } 8120 8121 /* Reset is now low. Complete chip reinitialization. */ 8122 ahd_outb(ahd, SIMODE1, ahd_inb(ahd, SIMODE1) | ENSCSIRST); 8123 scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE); 8124 ahd_outb(ahd, SCSISEQ1, scsiseq1 & (ENSELI|ENRSELI|ENAUTOATNP)); 8125 ahd_unpause(ahd); 8126 ahd->flags &= ~AHD_RESET_POLL_ACTIVE; 8127 aic_release_simq(ahd); 8128 ahd_unlock(ahd); 8129 } 8130 8131 /**************************** Statistics Processing ***************************/ 8132 static void 8133 ahd_stat_timer(void *arg) 8134 { 8135 struct ahd_softc *ahd = (struct ahd_softc *)arg; 8136 int enint_coal; 8137 8138 ahd_lock(ahd); 8139 enint_coal = ahd->hs_mailbox & ENINT_COALESCE; 8140 if (ahd->cmdcmplt_total > ahd->int_coalescing_threshold) 8141 enint_coal |= ENINT_COALESCE; 8142 else if (ahd->cmdcmplt_total < ahd->int_coalescing_stop_threshold) 8143 enint_coal &= ~ENINT_COALESCE; 8144 8145 if (enint_coal != (ahd->hs_mailbox & ENINT_COALESCE)) { 8146 ahd_enable_coalescing(ahd, enint_coal); 8147 #ifdef AHD_DEBUG 8148 if ((ahd_debug & AHD_SHOW_INT_COALESCING) != 0) 8149 printf("%s: Interrupt coalescing " 8150 "now %sabled. Cmds %d\n", 8151 ahd_name(ahd), 8152 (enint_coal & ENINT_COALESCE) ? "en" : "dis", 8153 ahd->cmdcmplt_total); 8154 #endif 8155 } 8156 8157 ahd->cmdcmplt_bucket = (ahd->cmdcmplt_bucket+1) & (AHD_STAT_BUCKETS-1); 8158 ahd->cmdcmplt_total -= ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket]; 8159 ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket] = 0; 8160 aic_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_MS, 8161 ahd_stat_timer, ahd); 8162 ahd_unlock(ahd); 8163 } 8164 8165 /****************************** Status Processing *****************************/ 8166 void 8167 ahd_handle_scb_status(struct ahd_softc *ahd, struct scb *scb) 8168 { 8169 if (scb->hscb->shared_data.istatus.scsi_status != 0) { 8170 ahd_handle_scsi_status(ahd, scb); 8171 } else { 8172 ahd_calc_residual(ahd, scb); 8173 ahd_done(ahd, scb); 8174 } 8175 } 8176 8177 void 8178 ahd_handle_scsi_status(struct ahd_softc *ahd, struct scb *scb) 8179 { 8180 struct hardware_scb *hscb; 8181 int paused; 8182 8183 /* 8184 * The sequencer freezes its select-out queue 8185 * anytime a SCSI status error occurs. We must 8186 * handle the error and increment our qfreeze count 8187 * to allow the sequencer to continue. We don't 8188 * bother clearing critical sections here since all 8189 * operations are on data structures that the sequencer 8190 * is not touching once the queue is frozen. 8191 */ 8192 hscb = scb->hscb; 8193 8194 if (ahd_is_paused(ahd)) { 8195 paused = 1; 8196 } else { 8197 paused = 0; 8198 ahd_pause(ahd); 8199 } 8200 8201 /* Freeze the queue until the client sees the error. */ 8202 ahd_freeze_devq(ahd, scb); 8203 aic_freeze_scb(scb); 8204 ahd->qfreeze_cnt++; 8205 ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); 8206 8207 if (paused == 0) 8208 ahd_unpause(ahd); 8209 8210 /* Don't want to clobber the original sense code */ 8211 if ((scb->flags & SCB_SENSE) != 0) { 8212 /* 8213 * Clear the SCB_SENSE Flag and perform 8214 * a normal command completion. 8215 */ 8216 scb->flags &= ~SCB_SENSE; 8217 aic_set_transaction_status(scb, CAM_AUTOSENSE_FAIL); 8218 ahd_done(ahd, scb); 8219 return; 8220 } 8221 aic_set_transaction_status(scb, CAM_SCSI_STATUS_ERROR); 8222 aic_set_scsi_status(scb, hscb->shared_data.istatus.scsi_status); 8223 switch (hscb->shared_data.istatus.scsi_status) { 8224 case STATUS_PKT_SENSE: 8225 { 8226 struct scsi_status_iu_header *siu; 8227 8228 ahd_sync_sense(ahd, scb, BUS_DMASYNC_POSTREAD); 8229 siu = (struct scsi_status_iu_header *)scb->sense_data; 8230 aic_set_scsi_status(scb, siu->status); 8231 #ifdef AHD_DEBUG 8232 if ((ahd_debug & AHD_SHOW_SENSE) != 0) { 8233 ahd_print_path(ahd, scb); 8234 printf("SCB 0x%x Received PKT Status of 0x%x\n", 8235 SCB_GET_TAG(scb), siu->status); 8236 printf("\tflags = 0x%x, sense len = 0x%x, " 8237 "pktfail = 0x%x\n", 8238 siu->flags, scsi_4btoul(siu->sense_length), 8239 scsi_4btoul(siu->pkt_failures_length)); 8240 } 8241 #endif 8242 if ((siu->flags & SIU_RSPVALID) != 0) { 8243 ahd_print_path(ahd, scb); 8244 if (scsi_4btoul(siu->pkt_failures_length) < 4) { 8245 printf("Unable to parse pkt_failures\n"); 8246 } else { 8247 8248 switch (SIU_PKTFAIL_CODE(siu)) { 8249 case SIU_PFC_NONE: 8250 printf("No packet failure found\n"); 8251 AHD_UNCORRECTABLE_ERROR(ahd); 8252 break; 8253 case SIU_PFC_CIU_FIELDS_INVALID: 8254 printf("Invalid Command IU Field\n"); 8255 AHD_UNCORRECTABLE_ERROR(ahd); 8256 break; 8257 case SIU_PFC_TMF_NOT_SUPPORTED: 8258 printf("TMF not supportd\n"); 8259 AHD_UNCORRECTABLE_ERROR(ahd); 8260 break; 8261 case SIU_PFC_TMF_FAILED: 8262 printf("TMF failed\n"); 8263 AHD_UNCORRECTABLE_ERROR(ahd); 8264 break; 8265 case SIU_PFC_INVALID_TYPE_CODE: 8266 printf("Invalid L_Q Type code\n"); 8267 AHD_UNCORRECTABLE_ERROR(ahd); 8268 break; 8269 case SIU_PFC_ILLEGAL_REQUEST: 8270 AHD_UNCORRECTABLE_ERROR(ahd); 8271 printf("Illegal request\n"); 8272 default: 8273 break; 8274 } 8275 } 8276 if (siu->status == SCSI_STATUS_OK) 8277 aic_set_transaction_status(scb, 8278 CAM_REQ_CMP_ERR); 8279 } 8280 if ((siu->flags & SIU_SNSVALID) != 0) { 8281 scb->flags |= SCB_PKT_SENSE; 8282 #ifdef AHD_DEBUG 8283 if ((ahd_debug & AHD_SHOW_SENSE) != 0) 8284 printf("Sense data available\n"); 8285 #endif 8286 } 8287 ahd_done(ahd, scb); 8288 break; 8289 } 8290 case SCSI_STATUS_CMD_TERMINATED: 8291 case SCSI_STATUS_CHECK_COND: 8292 { 8293 struct ahd_devinfo devinfo; 8294 struct ahd_dma_seg *sg; 8295 struct scsi_sense *sc; 8296 struct ahd_initiator_tinfo *targ_info; 8297 struct ahd_tmode_tstate *tstate; 8298 struct ahd_transinfo *tinfo; 8299 #ifdef AHD_DEBUG 8300 if (ahd_debug & AHD_SHOW_SENSE) { 8301 ahd_print_path(ahd, scb); 8302 printf("SCB %d: requests Check Status\n", 8303 SCB_GET_TAG(scb)); 8304 } 8305 #endif 8306 8307 if (aic_perform_autosense(scb) == 0) 8308 break; 8309 8310 ahd_compile_devinfo(&devinfo, SCB_GET_OUR_ID(scb), 8311 SCB_GET_TARGET(ahd, scb), 8312 SCB_GET_LUN(scb), 8313 SCB_GET_CHANNEL(ahd, scb), 8314 ROLE_INITIATOR); 8315 targ_info = ahd_fetch_transinfo(ahd, 8316 devinfo.channel, 8317 devinfo.our_scsiid, 8318 devinfo.target, 8319 &tstate); 8320 tinfo = &targ_info->curr; 8321 sg = scb->sg_list; 8322 sc = (struct scsi_sense *)hscb->shared_data.idata.cdb; 8323 /* 8324 * Save off the residual if there is one. 8325 */ 8326 ahd_update_residual(ahd, scb); 8327 #ifdef AHD_DEBUG 8328 if (ahd_debug & AHD_SHOW_SENSE) { 8329 ahd_print_path(ahd, scb); 8330 printf("Sending Sense\n"); 8331 } 8332 #endif 8333 scb->sg_count = 0; 8334 sg = ahd_sg_setup(ahd, scb, sg, ahd_get_sense_bufaddr(ahd, scb), 8335 aic_get_sense_bufsize(ahd, scb), 8336 /*last*/TRUE); 8337 sc->opcode = REQUEST_SENSE; 8338 sc->byte2 = 0; 8339 if (tinfo->protocol_version <= SCSI_REV_2 8340 && SCB_GET_LUN(scb) < 8) 8341 sc->byte2 = SCB_GET_LUN(scb) << 5; 8342 sc->unused[0] = 0; 8343 sc->unused[1] = 0; 8344 sc->length = aic_get_sense_bufsize(ahd, scb); 8345 sc->control = 0; 8346 8347 /* 8348 * We can't allow the target to disconnect. 8349 * This will be an untagged transaction and 8350 * having the target disconnect will make this 8351 * transaction indestinguishable from outstanding 8352 * tagged transactions. 8353 */ 8354 hscb->control = 0; 8355 8356 /* 8357 * This request sense could be because the 8358 * the device lost power or in some other 8359 * way has lost our transfer negotiations. 8360 * Renegotiate if appropriate. Unit attention 8361 * errors will be reported before any data 8362 * phases occur. 8363 */ 8364 if (aic_get_residual(scb) == aic_get_transfer_length(scb)) { 8365 ahd_update_neg_request(ahd, &devinfo, 8366 tstate, targ_info, 8367 AHD_NEG_IF_NON_ASYNC); 8368 } 8369 if (tstate->auto_negotiate & devinfo.target_mask) { 8370 hscb->control |= MK_MESSAGE; 8371 scb->flags &= 8372 ~(SCB_NEGOTIATE|SCB_ABORT|SCB_DEVICE_RESET); 8373 scb->flags |= SCB_AUTO_NEGOTIATE; 8374 } 8375 hscb->cdb_len = sizeof(*sc); 8376 ahd_setup_data_scb(ahd, scb); 8377 scb->flags |= SCB_SENSE; 8378 ahd_queue_scb(ahd, scb); 8379 /* 8380 * Ensure we have enough time to actually 8381 * retrieve the sense, but only schedule 8382 * the timer if we are not in recovery or 8383 * this is a recovery SCB that is allowed 8384 * to have an active timer. 8385 */ 8386 if (ahd->scb_data.recovery_scbs == 0 8387 || (scb->flags & SCB_RECOVERY_SCB) != 0) 8388 aic_scb_timer_reset(scb, 5 * 1000); 8389 break; 8390 } 8391 case SCSI_STATUS_OK: 8392 printf("%s: Interrupted for staus of 0???\n", 8393 ahd_name(ahd)); 8394 /* FALLTHROUGH */ 8395 default: 8396 ahd_done(ahd, scb); 8397 break; 8398 } 8399 } 8400 8401 /* 8402 * Calculate the residual for a just completed SCB. 8403 */ 8404 void 8405 ahd_calc_residual(struct ahd_softc *ahd, struct scb *scb) 8406 { 8407 struct hardware_scb *hscb; 8408 struct initiator_status *spkt; 8409 uint32_t sgptr; 8410 uint32_t resid_sgptr; 8411 uint32_t resid; 8412 8413 /* 8414 * 5 cases. 8415 * 1) No residual. 8416 * SG_STATUS_VALID clear in sgptr. 8417 * 2) Transferless command 8418 * 3) Never performed any transfers. 8419 * sgptr has SG_FULL_RESID set. 8420 * 4) No residual but target did not 8421 * save data pointers after the 8422 * last transfer, so sgptr was 8423 * never updated. 8424 * 5) We have a partial residual. 8425 * Use residual_sgptr to determine 8426 * where we are. 8427 */ 8428 8429 hscb = scb->hscb; 8430 sgptr = aic_le32toh(hscb->sgptr); 8431 if ((sgptr & SG_STATUS_VALID) == 0) 8432 /* Case 1 */ 8433 return; 8434 sgptr &= ~SG_STATUS_VALID; 8435 8436 if ((sgptr & SG_LIST_NULL) != 0) 8437 /* Case 2 */ 8438 return; 8439 8440 /* 8441 * Residual fields are the same in both 8442 * target and initiator status packets, 8443 * so we can always use the initiator fields 8444 * regardless of the role for this SCB. 8445 */ 8446 spkt = &hscb->shared_data.istatus; 8447 resid_sgptr = aic_le32toh(spkt->residual_sgptr); 8448 if ((sgptr & SG_FULL_RESID) != 0) { 8449 /* Case 3 */ 8450 resid = aic_get_transfer_length(scb); 8451 } else if ((resid_sgptr & SG_LIST_NULL) != 0) { 8452 /* Case 4 */ 8453 return; 8454 } else if ((resid_sgptr & SG_OVERRUN_RESID) != 0) { 8455 ahd_print_path(ahd, scb); 8456 printf("data overrun detected Tag == 0x%x.\n", 8457 SCB_GET_TAG(scb)); 8458 ahd_freeze_devq(ahd, scb); 8459 aic_set_transaction_status(scb, CAM_DATA_RUN_ERR); 8460 aic_freeze_scb(scb); 8461 return; 8462 } else if ((resid_sgptr & ~SG_PTR_MASK) != 0) { 8463 panic("Bogus resid sgptr value 0x%x\n", resid_sgptr); 8464 /* NOTREACHED */ 8465 } else { 8466 struct ahd_dma_seg *sg; 8467 8468 /* 8469 * Remainder of the SG where the transfer 8470 * stopped. 8471 */ 8472 resid = aic_le32toh(spkt->residual_datacnt) & AHD_SG_LEN_MASK; 8473 sg = ahd_sg_bus_to_virt(ahd, scb, resid_sgptr & SG_PTR_MASK); 8474 8475 /* The residual sg_ptr always points to the next sg */ 8476 sg--; 8477 8478 /* 8479 * Add up the contents of all residual 8480 * SG segments that are after the SG where 8481 * the transfer stopped. 8482 */ 8483 while ((aic_le32toh(sg->len) & AHD_DMA_LAST_SEG) == 0) { 8484 sg++; 8485 resid += aic_le32toh(sg->len) & AHD_SG_LEN_MASK; 8486 } 8487 } 8488 if ((scb->flags & SCB_SENSE) == 0) 8489 aic_set_residual(scb, resid); 8490 else 8491 aic_set_sense_residual(scb, resid); 8492 8493 #ifdef AHD_DEBUG 8494 if ((ahd_debug & AHD_SHOW_MISC) != 0) { 8495 ahd_print_path(ahd, scb); 8496 printf("Handled %sResidual of %d bytes\n", 8497 (scb->flags & SCB_SENSE) ? "Sense " : "", resid); 8498 } 8499 #endif 8500 } 8501 8502 /******************************* Target Mode **********************************/ 8503 #ifdef AHD_TARGET_MODE 8504 /* 8505 * Add a target mode event to this lun's queue 8506 */ 8507 static void 8508 ahd_queue_lstate_event(struct ahd_softc *ahd, struct ahd_tmode_lstate *lstate, 8509 u_int initiator_id, u_int event_type, u_int event_arg) 8510 { 8511 struct ahd_tmode_event *event; 8512 int pending; 8513 8514 xpt_freeze_devq(lstate->path, /*count*/1); 8515 if (lstate->event_w_idx >= lstate->event_r_idx) 8516 pending = lstate->event_w_idx - lstate->event_r_idx; 8517 else 8518 pending = AHD_TMODE_EVENT_BUFFER_SIZE + 1 8519 - (lstate->event_r_idx - lstate->event_w_idx); 8520 8521 if (event_type == EVENT_TYPE_BUS_RESET 8522 || event_type == MSG_BUS_DEV_RESET) { 8523 /* 8524 * Any earlier events are irrelevant, so reset our buffer. 8525 * This has the effect of allowing us to deal with reset 8526 * floods (an external device holding down the reset line) 8527 * without losing the event that is really interesting. 8528 */ 8529 lstate->event_r_idx = 0; 8530 lstate->event_w_idx = 0; 8531 xpt_release_devq(lstate->path, pending, /*runqueue*/FALSE); 8532 } 8533 8534 if (pending == AHD_TMODE_EVENT_BUFFER_SIZE) { 8535 xpt_print_path(lstate->path); 8536 printf("immediate event %x:%x lost\n", 8537 lstate->event_buffer[lstate->event_r_idx].event_type, 8538 lstate->event_buffer[lstate->event_r_idx].event_arg); 8539 lstate->event_r_idx++; 8540 if (lstate->event_r_idx == AHD_TMODE_EVENT_BUFFER_SIZE) 8541 lstate->event_r_idx = 0; 8542 xpt_release_devq(lstate->path, /*count*/1, /*runqueue*/FALSE); 8543 } 8544 8545 event = &lstate->event_buffer[lstate->event_w_idx]; 8546 event->initiator_id = initiator_id; 8547 event->event_type = event_type; 8548 event->event_arg = event_arg; 8549 lstate->event_w_idx++; 8550 if (lstate->event_w_idx == AHD_TMODE_EVENT_BUFFER_SIZE) 8551 lstate->event_w_idx = 0; 8552 } 8553 8554 /* 8555 * Send any target mode events queued up waiting 8556 * for immediate notify resources. 8557 */ 8558 void 8559 ahd_send_lstate_events(struct ahd_softc *ahd, struct ahd_tmode_lstate *lstate) 8560 { 8561 struct ccb_hdr *ccbh; 8562 struct ccb_immed_notify *inot; 8563 8564 while (lstate->event_r_idx != lstate->event_w_idx 8565 && (ccbh = SLIST_FIRST(&lstate->immed_notifies)) != NULL) { 8566 struct ahd_tmode_event *event; 8567 8568 event = &lstate->event_buffer[lstate->event_r_idx]; 8569 SLIST_REMOVE_HEAD(&lstate->immed_notifies, sim_links.sle); 8570 inot = (struct ccb_immed_notify *)ccbh; 8571 switch (event->event_type) { 8572 case EVENT_TYPE_BUS_RESET: 8573 ccbh->status = CAM_SCSI_BUS_RESET|CAM_DEV_QFRZN; 8574 break; 8575 default: 8576 ccbh->status = CAM_MESSAGE_RECV|CAM_DEV_QFRZN; 8577 inot->message_args[0] = event->event_type; 8578 inot->message_args[1] = event->event_arg; 8579 break; 8580 } 8581 inot->initiator_id = event->initiator_id; 8582 inot->sense_len = 0; 8583 xpt_done((union ccb *)inot); 8584 lstate->event_r_idx++; 8585 if (lstate->event_r_idx == AHD_TMODE_EVENT_BUFFER_SIZE) 8586 lstate->event_r_idx = 0; 8587 } 8588 } 8589 #endif 8590 8591 /******************** Sequencer Program Patching/Download *********************/ 8592 8593 #ifdef AHD_DUMP_SEQ 8594 void 8595 ahd_dumpseq(struct ahd_softc* ahd) 8596 { 8597 int i; 8598 int max_prog; 8599 8600 max_prog = 2048; 8601 8602 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE|LOADRAM); 8603 ahd_outw(ahd, PRGMCNT, 0); 8604 for (i = 0; i < max_prog; i++) { 8605 uint8_t ins_bytes[4]; 8606 8607 ahd_insb(ahd, SEQRAM, ins_bytes, 4); 8608 printf("0x%08x\n", ins_bytes[0] << 24 8609 | ins_bytes[1] << 16 8610 | ins_bytes[2] << 8 8611 | ins_bytes[3]); 8612 } 8613 } 8614 #endif 8615 8616 static void 8617 ahd_loadseq(struct ahd_softc *ahd) 8618 { 8619 struct cs cs_table[num_critical_sections]; 8620 u_int begin_set[num_critical_sections]; 8621 u_int end_set[num_critical_sections]; 8622 struct patch *cur_patch; 8623 u_int cs_count; 8624 u_int cur_cs; 8625 u_int i; 8626 int downloaded; 8627 u_int skip_addr; 8628 u_int sg_prefetch_cnt; 8629 u_int sg_prefetch_cnt_limit; 8630 u_int sg_prefetch_align; 8631 u_int sg_size; 8632 u_int cacheline_mask; 8633 uint8_t download_consts[DOWNLOAD_CONST_COUNT]; 8634 8635 if (bootverbose) 8636 printf("%s: Downloading Sequencer Program...", 8637 ahd_name(ahd)); 8638 8639 #if DOWNLOAD_CONST_COUNT != 8 8640 #error "Download Const Mismatch" 8641 #endif 8642 /* 8643 * Start out with 0 critical sections 8644 * that apply to this firmware load. 8645 */ 8646 cs_count = 0; 8647 cur_cs = 0; 8648 memset(begin_set, 0, sizeof(begin_set)); 8649 memset(end_set, 0, sizeof(end_set)); 8650 8651 /* 8652 * Setup downloadable constant table. 8653 * 8654 * The computation for the S/G prefetch variables is 8655 * a bit complicated. We would like to always fetch 8656 * in terms of cachelined sized increments. However, 8657 * if the cacheline is not an even multiple of the 8658 * SG element size or is larger than our SG RAM, using 8659 * just the cache size might leave us with only a portion 8660 * of an SG element at the tail of a prefetch. If the 8661 * cacheline is larger than our S/G prefetch buffer less 8662 * the size of an SG element, we may round down to a cacheline 8663 * that doesn't contain any or all of the S/G of interest 8664 * within the bounds of our S/G ram. Provide variables to 8665 * the sequencer that will allow it to handle these edge 8666 * cases. 8667 */ 8668 /* Start by aligning to the nearest cacheline. */ 8669 sg_prefetch_align = ahd->pci_cachesize; 8670 if (sg_prefetch_align == 0) 8671 sg_prefetch_align = 8; 8672 /* Round down to the nearest power of 2. */ 8673 while (powerof2(sg_prefetch_align) == 0) 8674 sg_prefetch_align--; 8675 8676 cacheline_mask = sg_prefetch_align - 1; 8677 8678 /* 8679 * If the cacheline boundary is greater than half our prefetch RAM 8680 * we risk not being able to fetch even a single complete S/G 8681 * segment if we align to that boundary. 8682 */ 8683 if (sg_prefetch_align > CCSGADDR_MAX/2) 8684 sg_prefetch_align = CCSGADDR_MAX/2; 8685 /* Start by fetching a single cacheline. */ 8686 sg_prefetch_cnt = sg_prefetch_align; 8687 /* 8688 * Increment the prefetch count by cachelines until 8689 * at least one S/G element will fit. 8690 */ 8691 sg_size = sizeof(struct ahd_dma_seg); 8692 if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) 8693 sg_size = sizeof(struct ahd_dma64_seg); 8694 while (sg_prefetch_cnt < sg_size) 8695 sg_prefetch_cnt += sg_prefetch_align; 8696 /* 8697 * If the cacheline is not an even multiple of 8698 * the S/G size, we may only get a partial S/G when 8699 * we align. Add a cacheline if this is the case. 8700 */ 8701 if ((sg_prefetch_align % sg_size) != 0 8702 && (sg_prefetch_cnt < CCSGADDR_MAX)) 8703 sg_prefetch_cnt += sg_prefetch_align; 8704 /* 8705 * Lastly, compute a value that the sequencer can use 8706 * to determine if the remainder of the CCSGRAM buffer 8707 * has a full S/G element in it. 8708 */ 8709 sg_prefetch_cnt_limit = -(sg_prefetch_cnt - sg_size + 1); 8710 download_consts[SG_PREFETCH_CNT] = sg_prefetch_cnt; 8711 download_consts[SG_PREFETCH_CNT_LIMIT] = sg_prefetch_cnt_limit; 8712 download_consts[SG_PREFETCH_ALIGN_MASK] = ~(sg_prefetch_align - 1); 8713 download_consts[SG_PREFETCH_ADDR_MASK] = (sg_prefetch_align - 1); 8714 download_consts[SG_SIZEOF] = sg_size; 8715 download_consts[PKT_OVERRUN_BUFOFFSET] = 8716 (ahd->overrun_buf - (uint8_t *)ahd->qoutfifo) / 256; 8717 download_consts[SCB_TRANSFER_SIZE] = SCB_TRANSFER_SIZE_1BYTE_LUN; 8718 download_consts[CACHELINE_MASK] = cacheline_mask; 8719 cur_patch = patches; 8720 downloaded = 0; 8721 skip_addr = 0; 8722 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE|LOADRAM); 8723 ahd_outw(ahd, PRGMCNT, 0); 8724 8725 for (i = 0; i < sizeof(seqprog)/4; i++) { 8726 if (ahd_check_patch(ahd, &cur_patch, i, &skip_addr) == 0) { 8727 /* 8728 * Don't download this instruction as it 8729 * is in a patch that was removed. 8730 */ 8731 continue; 8732 } 8733 /* 8734 * Move through the CS table until we find a CS 8735 * that might apply to this instruction. 8736 */ 8737 for (; cur_cs < num_critical_sections; cur_cs++) { 8738 if (critical_sections[cur_cs].end <= i) { 8739 if (begin_set[cs_count] == TRUE 8740 && end_set[cs_count] == FALSE) { 8741 cs_table[cs_count].end = downloaded; 8742 end_set[cs_count] = TRUE; 8743 cs_count++; 8744 } 8745 continue; 8746 } 8747 if (critical_sections[cur_cs].begin <= i 8748 && begin_set[cs_count] == FALSE) { 8749 cs_table[cs_count].begin = downloaded; 8750 begin_set[cs_count] = TRUE; 8751 } 8752 break; 8753 } 8754 ahd_download_instr(ahd, i, download_consts); 8755 downloaded++; 8756 } 8757 8758 ahd->num_critical_sections = cs_count; 8759 if (cs_count != 0) { 8760 8761 cs_count *= sizeof(struct cs); 8762 ahd->critical_sections = malloc(cs_count, M_DEVBUF, M_NOWAIT); 8763 if (ahd->critical_sections == NULL) 8764 panic("ahd_loadseq: Could not malloc"); 8765 memcpy(ahd->critical_sections, cs_table, cs_count); 8766 } 8767 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE); 8768 8769 if (bootverbose) { 8770 printf(" %d instructions downloaded\n", downloaded); 8771 printf("%s: Features 0x%x, Bugs 0x%x, Flags 0x%x\n", 8772 ahd_name(ahd), ahd->features, ahd->bugs, ahd->flags); 8773 } 8774 } 8775 8776 static int 8777 ahd_check_patch(struct ahd_softc *ahd, struct patch **start_patch, 8778 u_int start_instr, u_int *skip_addr) 8779 { 8780 struct patch *cur_patch; 8781 struct patch *last_patch; 8782 u_int num_patches; 8783 8784 num_patches = sizeof(patches)/sizeof(struct patch); 8785 last_patch = &patches[num_patches]; 8786 cur_patch = *start_patch; 8787 8788 while (cur_patch < last_patch && start_instr == cur_patch->begin) { 8789 8790 if (cur_patch->patch_func(ahd) == 0) { 8791 8792 /* Start rejecting code */ 8793 *skip_addr = start_instr + cur_patch->skip_instr; 8794 cur_patch += cur_patch->skip_patch; 8795 } else { 8796 /* Accepted this patch. Advance to the next 8797 * one and wait for our intruction pointer to 8798 * hit this point. 8799 */ 8800 cur_patch++; 8801 } 8802 } 8803 8804 *start_patch = cur_patch; 8805 if (start_instr < *skip_addr) 8806 /* Still skipping */ 8807 return (0); 8808 8809 return (1); 8810 } 8811 8812 static u_int 8813 ahd_resolve_seqaddr(struct ahd_softc *ahd, u_int address) 8814 { 8815 struct patch *cur_patch; 8816 int address_offset; 8817 u_int skip_addr; 8818 u_int i; 8819 8820 address_offset = 0; 8821 cur_patch = patches; 8822 skip_addr = 0; 8823 8824 for (i = 0; i < address;) { 8825 8826 ahd_check_patch(ahd, &cur_patch, i, &skip_addr); 8827 8828 if (skip_addr > i) { 8829 int end_addr; 8830 8831 end_addr = MIN(address, skip_addr); 8832 address_offset += end_addr - i; 8833 i = skip_addr; 8834 } else { 8835 i++; 8836 } 8837 } 8838 return (address - address_offset); 8839 } 8840 8841 static void 8842 ahd_download_instr(struct ahd_softc *ahd, u_int instrptr, uint8_t *dconsts) 8843 { 8844 union ins_formats instr; 8845 struct ins_format1 *fmt1_ins; 8846 struct ins_format3 *fmt3_ins; 8847 u_int opcode; 8848 8849 /* 8850 * The firmware is always compiled into a little endian format. 8851 */ 8852 instr.integer = aic_le32toh(*(uint32_t*)&seqprog[instrptr * 4]); 8853 8854 fmt1_ins = &instr.format1; 8855 fmt3_ins = NULL; 8856 8857 /* Pull the opcode */ 8858 opcode = instr.format1.opcode; 8859 switch (opcode) { 8860 case AIC_OP_JMP: 8861 case AIC_OP_JC: 8862 case AIC_OP_JNC: 8863 case AIC_OP_CALL: 8864 case AIC_OP_JNE: 8865 case AIC_OP_JNZ: 8866 case AIC_OP_JE: 8867 case AIC_OP_JZ: 8868 { 8869 fmt3_ins = &instr.format3; 8870 fmt3_ins->address = ahd_resolve_seqaddr(ahd, fmt3_ins->address); 8871 /* FALLTHROUGH */ 8872 } 8873 case AIC_OP_OR: 8874 case AIC_OP_AND: 8875 case AIC_OP_XOR: 8876 case AIC_OP_ADD: 8877 case AIC_OP_ADC: 8878 case AIC_OP_BMOV: 8879 if (fmt1_ins->parity != 0) { 8880 fmt1_ins->immediate = dconsts[fmt1_ins->immediate]; 8881 } 8882 fmt1_ins->parity = 0; 8883 /* FALLTHROUGH */ 8884 case AIC_OP_ROL: 8885 { 8886 int i, count; 8887 8888 /* Calculate odd parity for the instruction */ 8889 for (i = 0, count = 0; i < 31; i++) { 8890 uint32_t mask; 8891 8892 mask = 0x01 << i; 8893 if ((instr.integer & mask) != 0) 8894 count++; 8895 } 8896 if ((count & 0x01) == 0) 8897 instr.format1.parity = 1; 8898 8899 /* The sequencer is a little endian cpu */ 8900 instr.integer = aic_htole32(instr.integer); 8901 ahd_outsb(ahd, SEQRAM, instr.bytes, 4); 8902 break; 8903 } 8904 default: 8905 panic("Unknown opcode encountered in seq program"); 8906 break; 8907 } 8908 } 8909 8910 static int 8911 ahd_probe_stack_size(struct ahd_softc *ahd) 8912 { 8913 int last_probe; 8914 8915 last_probe = 0; 8916 while (1) { 8917 int i; 8918 8919 /* 8920 * We avoid using 0 as a pattern to avoid 8921 * confusion if the stack implementation 8922 * "back-fills" with zeros when "poping' 8923 * entries. 8924 */ 8925 for (i = 1; i <= last_probe+1; i++) { 8926 ahd_outb(ahd, STACK, i & 0xFF); 8927 ahd_outb(ahd, STACK, (i >> 8) & 0xFF); 8928 } 8929 8930 /* Verify */ 8931 for (i = last_probe+1; i > 0; i--) { 8932 u_int stack_entry; 8933 8934 stack_entry = ahd_inb(ahd, STACK) 8935 |(ahd_inb(ahd, STACK) << 8); 8936 if (stack_entry != i) 8937 goto sized; 8938 } 8939 last_probe++; 8940 } 8941 sized: 8942 return (last_probe); 8943 } 8944 8945 void 8946 ahd_dump_all_cards_state(void) 8947 { 8948 struct ahd_softc *list_ahd; 8949 8950 TAILQ_FOREACH(list_ahd, &ahd_tailq, links) { 8951 ahd_dump_card_state(list_ahd); 8952 } 8953 } 8954 8955 int 8956 ahd_print_register(ahd_reg_parse_entry_t *table, u_int num_entries, 8957 const char *name, u_int address, u_int value, 8958 u_int *cur_column, u_int wrap_point) 8959 { 8960 int printed; 8961 u_int printed_mask; 8962 u_int dummy_column; 8963 8964 if (cur_column == NULL) { 8965 dummy_column = 0; 8966 cur_column = &dummy_column; 8967 } 8968 8969 if (cur_column != NULL && *cur_column >= wrap_point) { 8970 printf("\n"); 8971 *cur_column = 0; 8972 } 8973 printed = printf("%s[0x%x]", name, value); 8974 if (table == NULL) { 8975 printed += printf(" "); 8976 *cur_column += printed; 8977 return (printed); 8978 } 8979 printed_mask = 0; 8980 while (printed_mask != 0xFF) { 8981 int entry; 8982 8983 for (entry = 0; entry < num_entries; entry++) { 8984 if (((value & table[entry].mask) 8985 != table[entry].value) 8986 || ((printed_mask & table[entry].mask) 8987 == table[entry].mask)) 8988 continue; 8989 8990 printed += printf("%s%s", 8991 printed_mask == 0 ? ":(" : "|", 8992 table[entry].name); 8993 printed_mask |= table[entry].mask; 8994 8995 break; 8996 } 8997 if (entry >= num_entries) 8998 break; 8999 } 9000 if (printed_mask != 0) 9001 printed += printf(") "); 9002 else 9003 printed += printf(" "); 9004 *cur_column += printed; 9005 return (printed); 9006 } 9007 9008 void 9009 ahd_dump_card_state(struct ahd_softc *ahd) 9010 { 9011 struct scb *scb; 9012 ahd_mode_state saved_modes; 9013 u_int dffstat; 9014 int paused; 9015 u_int scb_index; 9016 u_int saved_scb_index; 9017 u_int cur_col; 9018 int i; 9019 9020 if (ahd_is_paused(ahd)) { 9021 paused = 1; 9022 } else { 9023 paused = 0; 9024 ahd_pause(ahd); 9025 } 9026 saved_modes = ahd_save_modes(ahd); 9027 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 9028 printf(">>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<\n" 9029 "%s: Dumping Card State at program address 0x%x Mode 0x%x\n", 9030 ahd_name(ahd), 9031 ahd_inw(ahd, CURADDR), 9032 ahd_build_mode_state(ahd, ahd->saved_src_mode, 9033 ahd->saved_dst_mode)); 9034 if (paused) 9035 printf("Card was paused\n"); 9036 9037 if (ahd_check_cmdcmpltqueues(ahd)) 9038 printf("Completions are pending\n"); 9039 9040 /* 9041 * Mode independent registers. 9042 */ 9043 cur_col = 0; 9044 ahd_intstat_print(ahd_inb(ahd, INTSTAT), &cur_col, 50); 9045 ahd_seloid_print(ahd_inb(ahd, SELOID), &cur_col, 50); 9046 ahd_selid_print(ahd_inb(ahd, SELID), &cur_col, 50); 9047 ahd_hs_mailbox_print(ahd_inb(ahd, LOCAL_HS_MAILBOX), &cur_col, 50); 9048 ahd_intctl_print(ahd_inb(ahd, INTCTL), &cur_col, 50); 9049 ahd_seqintstat_print(ahd_inb(ahd, SEQINTSTAT), &cur_col, 50); 9050 ahd_saved_mode_print(ahd_inb(ahd, SAVED_MODE), &cur_col, 50); 9051 ahd_dffstat_print(ahd_inb(ahd, DFFSTAT), &cur_col, 50); 9052 ahd_scsisigi_print(ahd_inb(ahd, SCSISIGI), &cur_col, 50); 9053 ahd_scsiphase_print(ahd_inb(ahd, SCSIPHASE), &cur_col, 50); 9054 ahd_scsibus_print(ahd_inb(ahd, SCSIBUS), &cur_col, 50); 9055 ahd_lastphase_print(ahd_inb(ahd, LASTPHASE), &cur_col, 50); 9056 ahd_scsiseq0_print(ahd_inb(ahd, SCSISEQ0), &cur_col, 50); 9057 ahd_scsiseq1_print(ahd_inb(ahd, SCSISEQ1), &cur_col, 50); 9058 ahd_seqctl0_print(ahd_inb(ahd, SEQCTL0), &cur_col, 50); 9059 ahd_seqintctl_print(ahd_inb(ahd, SEQINTCTL), &cur_col, 50); 9060 ahd_seq_flags_print(ahd_inb(ahd, SEQ_FLAGS), &cur_col, 50); 9061 ahd_seq_flags2_print(ahd_inb(ahd, SEQ_FLAGS2), &cur_col, 50); 9062 ahd_qfreeze_count_print(ahd_inw(ahd, QFREEZE_COUNT), &cur_col, 50); 9063 ahd_kernel_qfreeze_count_print(ahd_inw(ahd, KERNEL_QFREEZE_COUNT), 9064 &cur_col, 50); 9065 ahd_mk_message_scb_print(ahd_inw(ahd, MK_MESSAGE_SCB), &cur_col, 50); 9066 ahd_mk_message_scsiid_print(ahd_inb(ahd, MK_MESSAGE_SCSIID), 9067 &cur_col, 50); 9068 ahd_sstat0_print(ahd_inb(ahd, SSTAT0), &cur_col, 50); 9069 ahd_sstat1_print(ahd_inb(ahd, SSTAT1), &cur_col, 50); 9070 ahd_sstat2_print(ahd_inb(ahd, SSTAT2), &cur_col, 50); 9071 ahd_sstat3_print(ahd_inb(ahd, SSTAT3), &cur_col, 50); 9072 ahd_perrdiag_print(ahd_inb(ahd, PERRDIAG), &cur_col, 50); 9073 ahd_simode1_print(ahd_inb(ahd, SIMODE1), &cur_col, 50); 9074 ahd_lqistat0_print(ahd_inb(ahd, LQISTAT0), &cur_col, 50); 9075 ahd_lqistat1_print(ahd_inb(ahd, LQISTAT1), &cur_col, 50); 9076 ahd_lqistat2_print(ahd_inb(ahd, LQISTAT2), &cur_col, 50); 9077 ahd_lqostat0_print(ahd_inb(ahd, LQOSTAT0), &cur_col, 50); 9078 ahd_lqostat1_print(ahd_inb(ahd, LQOSTAT1), &cur_col, 50); 9079 ahd_lqostat2_print(ahd_inb(ahd, LQOSTAT2), &cur_col, 50); 9080 printf("\n"); 9081 printf("\nSCB Count = %d CMDS_PENDING = %d LASTSCB 0x%x " 9082 "CURRSCB 0x%x NEXTSCB 0x%x\n", 9083 ahd->scb_data.numscbs, ahd_inw(ahd, CMDS_PENDING), 9084 ahd_inw(ahd, LASTSCB), ahd_inw(ahd, CURRSCB), 9085 ahd_inw(ahd, NEXTSCB)); 9086 cur_col = 0; 9087 /* QINFIFO */ 9088 ahd_search_qinfifo(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS, 9089 CAM_LUN_WILDCARD, SCB_LIST_NULL, 9090 ROLE_UNKNOWN, /*status*/0, SEARCH_PRINT); 9091 saved_scb_index = ahd_get_scbptr(ahd); 9092 printf("Pending list:"); 9093 i = 0; 9094 LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { 9095 if (i++ > AHD_SCB_MAX) 9096 break; 9097 cur_col = printf("\n%3d FIFO_USE[0x%x] ", SCB_GET_TAG(scb), 9098 ahd_inb_scbram(ahd, SCB_FIFO_USE_COUNT)); 9099 ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); 9100 ahd_scb_control_print(ahd_inb_scbram(ahd, SCB_CONTROL), 9101 &cur_col, 60); 9102 ahd_scb_scsiid_print(ahd_inb_scbram(ahd, SCB_SCSIID), 9103 &cur_col, 60); 9104 } 9105 printf("\nTotal %d\n", i); 9106 9107 printf("Kernel Free SCB lists: "); 9108 i = 0; 9109 TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) { 9110 struct scb *list_scb; 9111 9112 printf("\n COLIDX[%d]: ", AHD_GET_SCB_COL_IDX(ahd, scb)); 9113 list_scb = scb; 9114 do { 9115 printf("%d ", SCB_GET_TAG(list_scb)); 9116 list_scb = LIST_NEXT(list_scb, collision_links); 9117 } while (list_scb && i++ < AHD_SCB_MAX); 9118 } 9119 9120 printf("\n Any Device: "); 9121 LIST_FOREACH(scb, &ahd->scb_data.any_dev_free_scb_list, links.le) { 9122 if (i++ > AHD_SCB_MAX) 9123 break; 9124 printf("%d ", SCB_GET_TAG(scb)); 9125 } 9126 printf("\n"); 9127 9128 printf("Sequencer Complete DMA-inprog list: "); 9129 scb_index = ahd_inw(ahd, COMPLETE_SCB_DMAINPROG_HEAD); 9130 i = 0; 9131 while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { 9132 ahd_set_scbptr(ahd, scb_index); 9133 printf("%d ", scb_index); 9134 scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 9135 } 9136 printf("\n"); 9137 9138 printf("Sequencer Complete list: "); 9139 scb_index = ahd_inw(ahd, COMPLETE_SCB_HEAD); 9140 i = 0; 9141 while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { 9142 ahd_set_scbptr(ahd, scb_index); 9143 printf("%d ", scb_index); 9144 scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 9145 } 9146 printf("\n"); 9147 9148 9149 printf("Sequencer DMA-Up and Complete list: "); 9150 scb_index = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD); 9151 i = 0; 9152 while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { 9153 ahd_set_scbptr(ahd, scb_index); 9154 printf("%d ", scb_index); 9155 scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 9156 } 9157 printf("\n"); 9158 printf("Sequencer On QFreeze and Complete list: "); 9159 scb_index = ahd_inw(ahd, COMPLETE_ON_QFREEZE_HEAD); 9160 i = 0; 9161 while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { 9162 ahd_set_scbptr(ahd, scb_index); 9163 printf("%d ", scb_index); 9164 scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); 9165 } 9166 printf("\n"); 9167 ahd_set_scbptr(ahd, saved_scb_index); 9168 dffstat = ahd_inb(ahd, DFFSTAT); 9169 for (i = 0; i < 2; i++) { 9170 #ifdef AHD_DEBUG 9171 struct scb *fifo_scb; 9172 #endif 9173 u_int fifo_scbptr; 9174 9175 ahd_set_modes(ahd, AHD_MODE_DFF0 + i, AHD_MODE_DFF0 + i); 9176 fifo_scbptr = ahd_get_scbptr(ahd); 9177 printf("\n\n%s: FIFO%d %s, LONGJMP == 0x%x, SCB 0x%x\n", 9178 ahd_name(ahd), i, 9179 (dffstat & (FIFO0FREE << i)) ? "Free" : "Active", 9180 ahd_inw(ahd, LONGJMP_ADDR), fifo_scbptr); 9181 cur_col = 0; 9182 ahd_seqimode_print(ahd_inb(ahd, SEQIMODE), &cur_col, 50); 9183 ahd_seqintsrc_print(ahd_inb(ahd, SEQINTSRC), &cur_col, 50); 9184 ahd_dfcntrl_print(ahd_inb(ahd, DFCNTRL), &cur_col, 50); 9185 ahd_dfstatus_print(ahd_inb(ahd, DFSTATUS), &cur_col, 50); 9186 ahd_sg_cache_shadow_print(ahd_inb(ahd, SG_CACHE_SHADOW), 9187 &cur_col, 50); 9188 ahd_sg_state_print(ahd_inb(ahd, SG_STATE), &cur_col, 50); 9189 ahd_dffsxfrctl_print(ahd_inb(ahd, DFFSXFRCTL), &cur_col, 50); 9190 ahd_soffcnt_print(ahd_inb(ahd, SOFFCNT), &cur_col, 50); 9191 ahd_mdffstat_print(ahd_inb(ahd, MDFFSTAT), &cur_col, 50); 9192 if (cur_col > 50) { 9193 printf("\n"); 9194 cur_col = 0; 9195 } 9196 cur_col += printf("SHADDR = 0x%x%x, SHCNT = 0x%x ", 9197 ahd_inl(ahd, SHADDR+4), 9198 ahd_inl(ahd, SHADDR), 9199 (ahd_inb(ahd, SHCNT) 9200 | (ahd_inb(ahd, SHCNT + 1) << 8) 9201 | (ahd_inb(ahd, SHCNT + 2) << 16))); 9202 if (cur_col > 50) { 9203 printf("\n"); 9204 cur_col = 0; 9205 } 9206 cur_col += printf("HADDR = 0x%x%x, HCNT = 0x%x ", 9207 ahd_inl(ahd, HADDR+4), 9208 ahd_inl(ahd, HADDR), 9209 (ahd_inb(ahd, HCNT) 9210 | (ahd_inb(ahd, HCNT + 1) << 8) 9211 | (ahd_inb(ahd, HCNT + 2) << 16))); 9212 ahd_ccsgctl_print(ahd_inb(ahd, CCSGCTL), &cur_col, 50); 9213 #ifdef AHD_DEBUG 9214 if ((ahd_debug & AHD_SHOW_SG) != 0) { 9215 fifo_scb = ahd_lookup_scb(ahd, fifo_scbptr); 9216 if (fifo_scb != NULL) 9217 ahd_dump_sglist(fifo_scb); 9218 } 9219 #endif 9220 } 9221 printf("\nLQIN: "); 9222 for (i = 0; i < 20; i++) 9223 printf("0x%x ", ahd_inb(ahd, LQIN + i)); 9224 printf("\n"); 9225 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); 9226 printf("%s: LQISTATE = 0x%x, LQOSTATE = 0x%x, OPTIONMODE = 0x%x\n", 9227 ahd_name(ahd), ahd_inb(ahd, LQISTATE), ahd_inb(ahd, LQOSTATE), 9228 ahd_inb(ahd, OPTIONMODE)); 9229 printf("%s: OS_SPACE_CNT = 0x%x MAXCMDCNT = 0x%x\n", 9230 ahd_name(ahd), ahd_inb(ahd, OS_SPACE_CNT), 9231 ahd_inb(ahd, MAXCMDCNT)); 9232 printf("%s: SAVED_SCSIID = 0x%x SAVED_LUN = 0x%x\n", 9233 ahd_name(ahd), ahd_inb(ahd, SAVED_SCSIID), 9234 ahd_inb(ahd, SAVED_LUN)); 9235 ahd_simode0_print(ahd_inb(ahd, SIMODE0), &cur_col, 50); 9236 printf("\n"); 9237 ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); 9238 cur_col = 0; 9239 ahd_ccscbctl_print(ahd_inb(ahd, CCSCBCTL), &cur_col, 50); 9240 printf("\n"); 9241 ahd_set_modes(ahd, ahd->saved_src_mode, ahd->saved_dst_mode); 9242 printf("%s: REG0 == 0x%x, SINDEX = 0x%x, DINDEX = 0x%x\n", 9243 ahd_name(ahd), ahd_inw(ahd, REG0), ahd_inw(ahd, SINDEX), 9244 ahd_inw(ahd, DINDEX)); 9245 printf("%s: SCBPTR == 0x%x, SCB_NEXT == 0x%x, SCB_NEXT2 == 0x%x\n", 9246 ahd_name(ahd), ahd_get_scbptr(ahd), 9247 ahd_inw_scbram(ahd, SCB_NEXT), 9248 ahd_inw_scbram(ahd, SCB_NEXT2)); 9249 printf("CDB %x %x %x %x %x %x\n", 9250 ahd_inb_scbram(ahd, SCB_CDB_STORE), 9251 ahd_inb_scbram(ahd, SCB_CDB_STORE+1), 9252 ahd_inb_scbram(ahd, SCB_CDB_STORE+2), 9253 ahd_inb_scbram(ahd, SCB_CDB_STORE+3), 9254 ahd_inb_scbram(ahd, SCB_CDB_STORE+4), 9255 ahd_inb_scbram(ahd, SCB_CDB_STORE+5)); 9256 printf("STACK:"); 9257 for (i = 0; i < ahd->stack_size; i++) { 9258 ahd->saved_stack[i] = 9259 ahd_inb(ahd, STACK)|(ahd_inb(ahd, STACK) << 8); 9260 printf(" 0x%x", ahd->saved_stack[i]); 9261 } 9262 for (i = ahd->stack_size-1; i >= 0; i--) { 9263 ahd_outb(ahd, STACK, ahd->saved_stack[i] & 0xFF); 9264 ahd_outb(ahd, STACK, (ahd->saved_stack[i] >> 8) & 0xFF); 9265 } 9266 printf("\n<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>\n"); 9267 ahd_platform_dump_card_state(ahd); 9268 ahd_restore_modes(ahd, saved_modes); 9269 if (paused == 0) 9270 ahd_unpause(ahd); 9271 } 9272 9273 void 9274 ahd_dump_scbs(struct ahd_softc *ahd) 9275 { 9276 ahd_mode_state saved_modes; 9277 u_int saved_scb_index; 9278 int i; 9279 9280 saved_modes = ahd_save_modes(ahd); 9281 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 9282 saved_scb_index = ahd_get_scbptr(ahd); 9283 for (i = 0; i < AHD_SCB_MAX; i++) { 9284 ahd_set_scbptr(ahd, i); 9285 printf("%3d", i); 9286 printf("(CTRL 0x%x ID 0x%x N 0x%x N2 0x%x SG 0x%x, RSG 0x%x)\n", 9287 ahd_inb_scbram(ahd, SCB_CONTROL), 9288 ahd_inb_scbram(ahd, SCB_SCSIID), 9289 ahd_inw_scbram(ahd, SCB_NEXT), 9290 ahd_inw_scbram(ahd, SCB_NEXT2), 9291 ahd_inl_scbram(ahd, SCB_SGPTR), 9292 ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR)); 9293 } 9294 printf("\n"); 9295 ahd_set_scbptr(ahd, saved_scb_index); 9296 ahd_restore_modes(ahd, saved_modes); 9297 } 9298 9299 9300 /*************************** Timeout Handling *********************************/ 9301 void 9302 ahd_timeout(struct scb *scb) 9303 { 9304 struct ahd_softc *ahd; 9305 9306 ahd = scb->ahd_softc; 9307 if ((scb->flags & SCB_ACTIVE) != 0) { 9308 if ((scb->flags & SCB_TIMEDOUT) == 0) { 9309 LIST_INSERT_HEAD(&ahd->timedout_scbs, scb, 9310 timedout_links); 9311 scb->flags |= SCB_TIMEDOUT; 9312 } 9313 ahd_wakeup_recovery_thread(ahd); 9314 } 9315 } 9316 9317 /* 9318 * ahd_recover_commands determines if any of the commands that have currently 9319 * timedout are the root cause for this timeout. Innocent commands are given 9320 * a new timeout while we wait for the command executing on the bus to timeout. 9321 * This routine is invoked from a thread context so we are allowed to sleep. 9322 * Our lock is not held on entry. 9323 */ 9324 void 9325 ahd_recover_commands(struct ahd_softc *ahd) 9326 { 9327 struct scb *scb; 9328 struct scb *active_scb; 9329 int found; 9330 int was_paused; 9331 u_int active_scbptr; 9332 u_int last_phase; 9333 9334 /* 9335 * Pause the controller and manually flush any 9336 * commands that have just completed but that our 9337 * interrupt handler has yet to see. 9338 */ 9339 was_paused = ahd_is_paused(ahd); 9340 9341 printf("%s: Recovery Initiated - Card was %spaused\n", ahd_name(ahd), 9342 was_paused ? "" : "not "); 9343 AHD_CORRECTABLE_ERROR(ahd); 9344 ahd_dump_card_state(ahd); 9345 9346 ahd_pause_and_flushwork(ahd); 9347 9348 if (LIST_EMPTY(&ahd->timedout_scbs) != 0) { 9349 /* 9350 * The timedout commands have already 9351 * completed. This typically means 9352 * that either the timeout value was on 9353 * the hairy edge of what the device 9354 * requires or - more likely - interrupts 9355 * are not happening. 9356 */ 9357 printf("%s: Timedout SCBs already complete. " 9358 "Interrupts may not be functioning.\n", ahd_name(ahd)); 9359 ahd_unpause(ahd); 9360 return; 9361 } 9362 9363 /* 9364 * Determine identity of SCB acting on the bus. 9365 * This test only catches non-packetized transactions. 9366 * Due to the fleeting nature of packetized operations, 9367 * we can't easily determine that a packetized operation 9368 * is on the bus. 9369 */ 9370 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 9371 last_phase = ahd_inb(ahd, LASTPHASE); 9372 active_scbptr = ahd_get_scbptr(ahd); 9373 active_scb = NULL; 9374 if (last_phase != P_BUSFREE 9375 || (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) 9376 active_scb = ahd_lookup_scb(ahd, active_scbptr); 9377 9378 while ((scb = LIST_FIRST(&ahd->timedout_scbs)) != NULL) { 9379 int target; 9380 int lun; 9381 char channel; 9382 9383 target = SCB_GET_TARGET(ahd, scb); 9384 channel = SCB_GET_CHANNEL(ahd, scb); 9385 lun = SCB_GET_LUN(scb); 9386 9387 ahd_print_path(ahd, scb); 9388 printf("SCB %d - timed out\n", SCB_GET_TAG(scb)); 9389 9390 if (scb->flags & (SCB_DEVICE_RESET|SCB_ABORT)) { 9391 /* 9392 * Been down this road before. 9393 * Do a full bus reset. 9394 */ 9395 aic_set_transaction_status(scb, CAM_CMD_TIMEOUT); 9396 bus_reset: 9397 found = ahd_reset_channel(ahd, channel, 9398 /*Initiate Reset*/TRUE); 9399 printf("%s: Issued Channel %c Bus Reset. " 9400 "%d SCBs aborted\n", ahd_name(ahd), channel, 9401 found); 9402 continue; 9403 } 9404 9405 /* 9406 * Remove the command from the timedout list in 9407 * preparation for requeing it. 9408 */ 9409 LIST_REMOVE(scb, timedout_links); 9410 scb->flags &= ~SCB_TIMEDOUT; 9411 9412 if (active_scb != NULL) { 9413 9414 if (active_scb != scb) { 9415 9416 /* 9417 * If the active SCB is not us, assume that 9418 * the active SCB has a longer timeout than 9419 * the timedout SCB, and wait for the active 9420 * SCB to timeout. As a safeguard, only 9421 * allow this deferral to continue if some 9422 * untimed-out command is outstanding. 9423 */ 9424 if (ahd_other_scb_timeout(ahd, scb, 9425 active_scb) == 0) 9426 goto bus_reset; 9427 continue; 9428 } 9429 9430 /* 9431 * We're active on the bus, so assert ATN 9432 * and hope that the target responds. 9433 */ 9434 ahd_set_recoveryscb(ahd, active_scb); 9435 active_scb->flags |= SCB_RECOVERY_SCB|SCB_DEVICE_RESET; 9436 ahd_outb(ahd, MSG_OUT, HOST_MSG); 9437 ahd_outb(ahd, SCSISIGO, last_phase|ATNO); 9438 ahd_print_path(ahd, active_scb); 9439 printf("BDR message in message buffer\n"); 9440 aic_scb_timer_reset(scb, 2 * 1000); 9441 break; 9442 } else if (last_phase != P_BUSFREE 9443 && ahd_inb(ahd, SCSIPHASE) == 0) { 9444 /* 9445 * SCB is not identified, there 9446 * is no pending REQ, and the sequencer 9447 * has not seen a busfree. Looks like 9448 * a stuck connection waiting to 9449 * go busfree. Reset the bus. 9450 */ 9451 printf("%s: Connection stuck awaiting busfree or " 9452 "Identify Msg.\n", ahd_name(ahd)); 9453 goto bus_reset; 9454 } else if (ahd_search_qinfifo(ahd, target, channel, lun, 9455 SCB_GET_TAG(scb), 9456 ROLE_INITIATOR, /*status*/0, 9457 SEARCH_COUNT) > 0) { 9458 9459 /* 9460 * We haven't even gone out on the bus 9461 * yet, so the timeout must be due to 9462 * some other command. Reset the timer 9463 * and go on. 9464 */ 9465 if (ahd_other_scb_timeout(ahd, scb, NULL) == 0) 9466 goto bus_reset; 9467 } else { 9468 /* 9469 * This SCB is for a disconnected transaction 9470 * and we haven't found a better candidate on 9471 * the bus to explain this timeout. 9472 */ 9473 ahd_set_recoveryscb(ahd, scb); 9474 9475 /* 9476 * Actually re-queue this SCB in an attempt 9477 * to select the device before it reconnects. 9478 * In either case (selection or reselection), 9479 * we will now issue a target reset to the 9480 * timed-out device. 9481 */ 9482 scb->flags |= SCB_DEVICE_RESET; 9483 scb->hscb->cdb_len = 0; 9484 scb->hscb->task_attribute = 0; 9485 scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; 9486 9487 ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); 9488 if ((scb->flags & SCB_PACKETIZED) != 0) { 9489 /* 9490 * Mark the SCB has having an outstanding 9491 * task management function. Should the command 9492 * complete normally before the task management 9493 * function can be sent, the host will be 9494 * notified to abort our requeued SCB. 9495 */ 9496 ahd_outb(ahd, SCB_TASK_MANAGEMENT, 9497 scb->hscb->task_management); 9498 } else { 9499 /* 9500 * If non-packetized, set the MK_MESSAGE control 9501 * bit indicating that we desire to send a 9502 * message. We also set the disconnected flag 9503 * since there is no guarantee that our SCB 9504 * control byte matches the version on the 9505 * card. We don't want the sequencer to abort 9506 * the command thinking an unsolicited 9507 * reselection occurred. 9508 */ 9509 scb->hscb->control |= MK_MESSAGE|DISCONNECTED; 9510 9511 /* 9512 * The sequencer will never re-reference the 9513 * in-core SCB. To make sure we are notified 9514 * during reslection, set the MK_MESSAGE flag in 9515 * the card's copy of the SCB. 9516 */ 9517 ahd_outb(ahd, SCB_CONTROL, 9518 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); 9519 } 9520 9521 /* 9522 * Clear out any entries in the QINFIFO first 9523 * so we are the next SCB for this target 9524 * to run. 9525 */ 9526 ahd_search_qinfifo(ahd, target, channel, lun, 9527 SCB_LIST_NULL, ROLE_INITIATOR, 9528 CAM_REQUEUE_REQ, SEARCH_COMPLETE); 9529 ahd_qinfifo_requeue_tail(ahd, scb); 9530 ahd_set_scbptr(ahd, active_scbptr); 9531 ahd_print_path(ahd, scb); 9532 printf("Queuing a BDR SCB\n"); 9533 aic_scb_timer_reset(scb, 2 * 1000); 9534 break; 9535 } 9536 } 9537 9538 /* 9539 * Any remaining SCBs were not the "culprit", so remove 9540 * them from the timeout list. The timer for these commands 9541 * will be reset once the recovery SCB completes. 9542 */ 9543 while ((scb = LIST_FIRST(&ahd->timedout_scbs)) != NULL) { 9544 9545 LIST_REMOVE(scb, timedout_links); 9546 scb->flags &= ~SCB_TIMEDOUT; 9547 } 9548 9549 ahd_unpause(ahd); 9550 } 9551 9552 /* 9553 * Re-schedule a timeout for the passed in SCB if we determine that some 9554 * other SCB is in the process of recovery or an SCB with a longer 9555 * timeout is still pending. Limit our search to just "other_scb" 9556 * if it is non-NULL. 9557 */ 9558 static int 9559 ahd_other_scb_timeout(struct ahd_softc *ahd, struct scb *scb, 9560 struct scb *other_scb) 9561 { 9562 u_int newtimeout; 9563 int found; 9564 9565 ahd_print_path(ahd, scb); 9566 printf("Other SCB Timeout%s", 9567 (scb->flags & SCB_OTHERTCL_TIMEOUT) != 0 9568 ? " again\n" : "\n"); 9569 9570 AHD_UNCORRECTABLE_ERROR(ahd); 9571 newtimeout = aic_get_timeout(scb); 9572 scb->flags |= SCB_OTHERTCL_TIMEOUT; 9573 found = 0; 9574 if (other_scb != NULL) { 9575 if ((other_scb->flags 9576 & (SCB_OTHERTCL_TIMEOUT|SCB_TIMEDOUT)) == 0 9577 || (other_scb->flags & SCB_RECOVERY_SCB) != 0) { 9578 found++; 9579 newtimeout = MAX(aic_get_timeout(other_scb), 9580 newtimeout); 9581 } 9582 } else { 9583 LIST_FOREACH(other_scb, &ahd->pending_scbs, pending_links) { 9584 if ((other_scb->flags 9585 & (SCB_OTHERTCL_TIMEOUT|SCB_TIMEDOUT)) == 0 9586 || (other_scb->flags & SCB_RECOVERY_SCB) != 0) { 9587 found++; 9588 newtimeout = MAX(aic_get_timeout(other_scb), 9589 newtimeout); 9590 } 9591 } 9592 } 9593 9594 if (found != 0) 9595 aic_scb_timer_reset(scb, newtimeout); 9596 else { 9597 ahd_print_path(ahd, scb); 9598 printf("No other SCB worth waiting for...\n"); 9599 } 9600 9601 return (found != 0); 9602 } 9603 9604 /**************************** Flexport Logic **********************************/ 9605 /* 9606 * Read count 16bit words from 16bit word address start_addr from the 9607 * SEEPROM attached to the controller, into buf, using the controller's 9608 * SEEPROM reading state machine. Optionally treat the data as a byte 9609 * stream in terms of byte order. 9610 */ 9611 int 9612 ahd_read_seeprom(struct ahd_softc *ahd, uint16_t *buf, 9613 u_int start_addr, u_int count, int bytestream) 9614 { 9615 u_int cur_addr; 9616 u_int end_addr; 9617 int error; 9618 9619 /* 9620 * If we never make it through the loop even once, 9621 * we were passed invalid arguments. 9622 */ 9623 error = EINVAL; 9624 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9625 end_addr = start_addr + count; 9626 for (cur_addr = start_addr; cur_addr < end_addr; cur_addr++) { 9627 9628 ahd_outb(ahd, SEEADR, cur_addr); 9629 ahd_outb(ahd, SEECTL, SEEOP_READ | SEESTART); 9630 9631 error = ahd_wait_seeprom(ahd); 9632 if (error) 9633 break; 9634 if (bytestream != 0) { 9635 uint8_t *bytestream_ptr; 9636 9637 bytestream_ptr = (uint8_t *)buf; 9638 *bytestream_ptr++ = ahd_inb(ahd, SEEDAT); 9639 *bytestream_ptr = ahd_inb(ahd, SEEDAT+1); 9640 } else { 9641 /* 9642 * ahd_inw() already handles machine byte order. 9643 */ 9644 *buf = ahd_inw(ahd, SEEDAT); 9645 } 9646 buf++; 9647 } 9648 return (error); 9649 } 9650 9651 /* 9652 * Write count 16bit words from buf, into SEEPROM attache to the 9653 * controller starting at 16bit word address start_addr, using the 9654 * controller's SEEPROM writing state machine. 9655 */ 9656 int 9657 ahd_write_seeprom(struct ahd_softc *ahd, uint16_t *buf, 9658 u_int start_addr, u_int count) 9659 { 9660 u_int cur_addr; 9661 u_int end_addr; 9662 int error; 9663 int retval; 9664 9665 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9666 error = ENOENT; 9667 9668 /* Place the chip into write-enable mode */ 9669 ahd_outb(ahd, SEEADR, SEEOP_EWEN_ADDR); 9670 ahd_outb(ahd, SEECTL, SEEOP_EWEN | SEESTART); 9671 error = ahd_wait_seeprom(ahd); 9672 if (error) 9673 return (error); 9674 9675 /* 9676 * Write the data. If we don't get throught the loop at 9677 * least once, the arguments were invalid. 9678 */ 9679 retval = EINVAL; 9680 end_addr = start_addr + count; 9681 for (cur_addr = start_addr; cur_addr < end_addr; cur_addr++) { 9682 ahd_outw(ahd, SEEDAT, *buf++); 9683 ahd_outb(ahd, SEEADR, cur_addr); 9684 ahd_outb(ahd, SEECTL, SEEOP_WRITE | SEESTART); 9685 9686 retval = ahd_wait_seeprom(ahd); 9687 if (retval) 9688 break; 9689 } 9690 9691 /* 9692 * Disable writes. 9693 */ 9694 ahd_outb(ahd, SEEADR, SEEOP_EWDS_ADDR); 9695 ahd_outb(ahd, SEECTL, SEEOP_EWDS | SEESTART); 9696 error = ahd_wait_seeprom(ahd); 9697 if (error) 9698 return (error); 9699 return (retval); 9700 } 9701 9702 /* 9703 * Wait ~100us for the serial eeprom to satisfy our request. 9704 */ 9705 int 9706 ahd_wait_seeprom(struct ahd_softc *ahd) 9707 { 9708 int cnt; 9709 9710 cnt = 5000; 9711 while ((ahd_inb(ahd, SEESTAT) & (SEEARBACK|SEEBUSY)) != 0 && --cnt) 9712 aic_delay(5); 9713 9714 if (cnt == 0) 9715 return (ETIMEDOUT); 9716 return (0); 9717 } 9718 9719 /* 9720 * Validate the two checksums in the per_channel 9721 * vital product data struct. 9722 */ 9723 int 9724 ahd_verify_vpd_cksum(struct vpd_config *vpd) 9725 { 9726 int i; 9727 int maxaddr; 9728 uint32_t checksum; 9729 uint8_t *vpdarray; 9730 9731 vpdarray = (uint8_t *)vpd; 9732 maxaddr = offsetof(struct vpd_config, vpd_checksum); 9733 checksum = 0; 9734 for (i = offsetof(struct vpd_config, resource_type); i < maxaddr; i++) 9735 checksum = checksum + vpdarray[i]; 9736 if (checksum == 0 9737 || (-checksum & 0xFF) != vpd->vpd_checksum) 9738 return (0); 9739 9740 checksum = 0; 9741 maxaddr = offsetof(struct vpd_config, checksum); 9742 for (i = offsetof(struct vpd_config, default_target_flags); 9743 i < maxaddr; i++) 9744 checksum = checksum + vpdarray[i]; 9745 if (checksum == 0 9746 || (-checksum & 0xFF) != vpd->checksum) 9747 return (0); 9748 return (1); 9749 } 9750 9751 int 9752 ahd_verify_cksum(struct seeprom_config *sc) 9753 { 9754 int i; 9755 int maxaddr; 9756 uint32_t checksum; 9757 uint16_t *scarray; 9758 9759 maxaddr = (sizeof(*sc)/2) - 1; 9760 checksum = 0; 9761 scarray = (uint16_t *)sc; 9762 9763 for (i = 0; i < maxaddr; i++) 9764 checksum = checksum + scarray[i]; 9765 if (checksum == 0 9766 || (checksum & 0xFFFF) != sc->checksum) { 9767 return (0); 9768 } else { 9769 return (1); 9770 } 9771 } 9772 9773 int 9774 ahd_acquire_seeprom(struct ahd_softc *ahd) 9775 { 9776 /* 9777 * We should be able to determine the SEEPROM type 9778 * from the flexport logic, but unfortunately not 9779 * all implementations have this logic and there is 9780 * no programatic method for determining if the logic 9781 * is present. 9782 */ 9783 return (1); 9784 #if 0 9785 uint8_t seetype; 9786 int error; 9787 9788 error = ahd_read_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, &seetype); 9789 if (error != 0 9790 || ((seetype & FLX_ROMSTAT_SEECFG) == FLX_ROMSTAT_SEE_NONE)) 9791 return (0); 9792 return (1); 9793 #endif 9794 } 9795 9796 void 9797 ahd_release_seeprom(struct ahd_softc *ahd) 9798 { 9799 /* Currently a no-op */ 9800 } 9801 9802 int 9803 ahd_write_flexport(struct ahd_softc *ahd, u_int addr, u_int value) 9804 { 9805 int error; 9806 9807 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9808 if (addr > 7) 9809 panic("ahd_write_flexport: address out of range"); 9810 ahd_outb(ahd, BRDCTL, BRDEN|(addr << 3)); 9811 error = ahd_wait_flexport(ahd); 9812 if (error != 0) 9813 return (error); 9814 ahd_outb(ahd, BRDDAT, value); 9815 ahd_flush_device_writes(ahd); 9816 ahd_outb(ahd, BRDCTL, BRDSTB|BRDEN|(addr << 3)); 9817 ahd_flush_device_writes(ahd); 9818 ahd_outb(ahd, BRDCTL, BRDEN|(addr << 3)); 9819 ahd_flush_device_writes(ahd); 9820 ahd_outb(ahd, BRDCTL, 0); 9821 ahd_flush_device_writes(ahd); 9822 return (0); 9823 } 9824 9825 int 9826 ahd_read_flexport(struct ahd_softc *ahd, u_int addr, uint8_t *value) 9827 { 9828 int error; 9829 9830 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9831 if (addr > 7) 9832 panic("ahd_read_flexport: address out of range"); 9833 ahd_outb(ahd, BRDCTL, BRDRW|BRDEN|(addr << 3)); 9834 error = ahd_wait_flexport(ahd); 9835 if (error != 0) 9836 return (error); 9837 *value = ahd_inb(ahd, BRDDAT); 9838 ahd_outb(ahd, BRDCTL, 0); 9839 ahd_flush_device_writes(ahd); 9840 return (0); 9841 } 9842 9843 /* 9844 * Wait at most 2 seconds for flexport arbitration to succeed. 9845 */ 9846 int 9847 ahd_wait_flexport(struct ahd_softc *ahd) 9848 { 9849 int cnt; 9850 9851 AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); 9852 cnt = 1000000 * 2 / 5; 9853 while ((ahd_inb(ahd, BRDCTL) & FLXARBACK) == 0 && --cnt) 9854 aic_delay(5); 9855 9856 if (cnt == 0) 9857 return (ETIMEDOUT); 9858 return (0); 9859 } 9860 9861 /************************* Target Mode ****************************************/ 9862 #ifdef AHD_TARGET_MODE 9863 cam_status 9864 ahd_find_tmode_devs(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb, 9865 struct ahd_tmode_tstate **tstate, 9866 struct ahd_tmode_lstate **lstate, 9867 int notfound_failure) 9868 { 9869 9870 if ((ahd->features & AHD_TARGETMODE) == 0) 9871 return (CAM_REQ_INVALID); 9872 9873 /* 9874 * Handle the 'black hole' device that sucks up 9875 * requests to unattached luns on enabled targets. 9876 */ 9877 if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD 9878 && ccb->ccb_h.target_lun == CAM_LUN_WILDCARD) { 9879 *tstate = NULL; 9880 *lstate = ahd->black_hole; 9881 } else { 9882 u_int max_id; 9883 9884 max_id = (ahd->features & AHD_WIDE) ? 15 : 7; 9885 if (ccb->ccb_h.target_id > max_id) 9886 return (CAM_TID_INVALID); 9887 9888 if (ccb->ccb_h.target_lun >= AHD_NUM_LUNS) 9889 return (CAM_LUN_INVALID); 9890 9891 *tstate = ahd->enabled_targets[ccb->ccb_h.target_id]; 9892 *lstate = NULL; 9893 if (*tstate != NULL) 9894 *lstate = 9895 (*tstate)->enabled_luns[ccb->ccb_h.target_lun]; 9896 } 9897 9898 if (notfound_failure != 0 && *lstate == NULL) 9899 return (CAM_PATH_INVALID); 9900 9901 return (CAM_REQ_CMP); 9902 } 9903 9904 void 9905 ahd_handle_en_lun(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb) 9906 { 9907 #if NOT_YET 9908 struct ahd_tmode_tstate *tstate; 9909 struct ahd_tmode_lstate *lstate; 9910 struct ccb_en_lun *cel; 9911 cam_status status; 9912 u_int target; 9913 u_int lun; 9914 u_int target_mask; 9915 u_long s; 9916 char channel; 9917 9918 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate, &lstate, 9919 /*notfound_failure*/FALSE); 9920 9921 if (status != CAM_REQ_CMP) { 9922 ccb->ccb_h.status = status; 9923 return; 9924 } 9925 9926 if ((ahd->features & AHD_MULTIROLE) != 0) { 9927 u_int our_id; 9928 9929 our_id = ahd->our_id; 9930 if (ccb->ccb_h.target_id != our_id) { 9931 if ((ahd->features & AHD_MULTI_TID) != 0 9932 && (ahd->flags & AHD_INITIATORROLE) != 0) { 9933 /* 9934 * Only allow additional targets if 9935 * the initiator role is disabled. 9936 * The hardware cannot handle a re-select-in 9937 * on the initiator id during a re-select-out 9938 * on a different target id. 9939 */ 9940 status = CAM_TID_INVALID; 9941 } else if ((ahd->flags & AHD_INITIATORROLE) != 0 9942 || ahd->enabled_luns > 0) { 9943 /* 9944 * Only allow our target id to change 9945 * if the initiator role is not configured 9946 * and there are no enabled luns which 9947 * are attached to the currently registered 9948 * scsi id. 9949 */ 9950 status = CAM_TID_INVALID; 9951 } 9952 } 9953 } 9954 9955 if (status != CAM_REQ_CMP) { 9956 ccb->ccb_h.status = status; 9957 return; 9958 } 9959 9960 /* 9961 * We now have an id that is valid. 9962 * If we aren't in target mode, switch modes. 9963 */ 9964 if ((ahd->flags & AHD_TARGETROLE) == 0 9965 && ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) { 9966 printf("Configuring Target Mode\n"); 9967 if (LIST_FIRST(&ahd->pending_scbs) != NULL) { 9968 ccb->ccb_h.status = CAM_BUSY; 9969 return; 9970 } 9971 ahd->flags |= AHD_TARGETROLE; 9972 if ((ahd->features & AHD_MULTIROLE) == 0) 9973 ahd->flags &= ~AHD_INITIATORROLE; 9974 ahd_pause(ahd); 9975 ahd_loadseq(ahd); 9976 ahd_restart(ahd); 9977 } 9978 cel = &ccb->cel; 9979 target = ccb->ccb_h.target_id; 9980 lun = ccb->ccb_h.target_lun; 9981 channel = SIM_CHANNEL(ahd, sim); 9982 target_mask = 0x01 << target; 9983 if (channel == 'B') 9984 target_mask <<= 8; 9985 9986 if (cel->enable != 0) { 9987 u_int scsiseq1; 9988 9989 /* Are we already enabled?? */ 9990 if (lstate != NULL) { 9991 xpt_print_path(ccb->ccb_h.path); 9992 printf("Lun already enabled\n"); 9993 AHD_CORRECTABLE_ERROR(ahd); 9994 ccb->ccb_h.status = CAM_LUN_ALRDY_ENA; 9995 return; 9996 } 9997 9998 if (cel->grp6_len != 0 9999 || cel->grp7_len != 0) { 10000 /* 10001 * Don't (yet?) support vendor 10002 * specific commands. 10003 */ 10004 ccb->ccb_h.status = CAM_REQ_INVALID; 10005 printf("Non-zero Group Codes\n"); 10006 return; 10007 } 10008 10009 /* 10010 * Seems to be okay. 10011 * Setup our data structures. 10012 */ 10013 if (target != CAM_TARGET_WILDCARD && tstate == NULL) { 10014 tstate = ahd_alloc_tstate(ahd, target, channel); 10015 if (tstate == NULL) { 10016 xpt_print_path(ccb->ccb_h.path); 10017 printf("Couldn't allocate tstate\n"); 10018 ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 10019 return; 10020 } 10021 } 10022 lstate = malloc(sizeof(*lstate), M_DEVBUF, M_NOWAIT); 10023 if (lstate == NULL) { 10024 xpt_print_path(ccb->ccb_h.path); 10025 printf("Couldn't allocate lstate\n"); 10026 ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 10027 return; 10028 } 10029 memset(lstate, 0, sizeof(*lstate)); 10030 status = xpt_create_path(&lstate->path, /*periph*/NULL, 10031 xpt_path_path_id(ccb->ccb_h.path), 10032 xpt_path_target_id(ccb->ccb_h.path), 10033 xpt_path_lun_id(ccb->ccb_h.path)); 10034 if (status != CAM_REQ_CMP) { 10035 free(lstate, M_DEVBUF); 10036 xpt_print_path(ccb->ccb_h.path); 10037 printf("Couldn't allocate path\n"); 10038 ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 10039 return; 10040 } 10041 SLIST_INIT(&lstate->accept_tios); 10042 SLIST_INIT(&lstate->immed_notifies); 10043 ahd_pause(ahd); 10044 if (target != CAM_TARGET_WILDCARD) { 10045 tstate->enabled_luns[lun] = lstate; 10046 ahd->enabled_luns++; 10047 10048 if ((ahd->features & AHD_MULTI_TID) != 0) { 10049 u_int targid_mask; 10050 10051 targid_mask = ahd_inw(ahd, TARGID); 10052 targid_mask |= target_mask; 10053 ahd_outw(ahd, TARGID, targid_mask); 10054 ahd_update_scsiid(ahd, targid_mask); 10055 } else { 10056 u_int our_id; 10057 char channel; 10058 10059 channel = SIM_CHANNEL(ahd, sim); 10060 our_id = SIM_SCSI_ID(ahd, sim); 10061 10062 /* 10063 * This can only happen if selections 10064 * are not enabled 10065 */ 10066 if (target != our_id) { 10067 u_int sblkctl; 10068 char cur_channel; 10069 int swap; 10070 10071 sblkctl = ahd_inb(ahd, SBLKCTL); 10072 cur_channel = (sblkctl & SELBUSB) 10073 ? 'B' : 'A'; 10074 if ((ahd->features & AHD_TWIN) == 0) 10075 cur_channel = 'A'; 10076 swap = cur_channel != channel; 10077 ahd->our_id = target; 10078 10079 if (swap) 10080 ahd_outb(ahd, SBLKCTL, 10081 sblkctl ^ SELBUSB); 10082 10083 ahd_outb(ahd, SCSIID, target); 10084 10085 if (swap) 10086 ahd_outb(ahd, SBLKCTL, sblkctl); 10087 } 10088 } 10089 } else 10090 ahd->black_hole = lstate; 10091 /* Allow select-in operations */ 10092 if (ahd->black_hole != NULL && ahd->enabled_luns > 0) { 10093 scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE); 10094 scsiseq1 |= ENSELI; 10095 ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq1); 10096 scsiseq1 = ahd_inb(ahd, SCSISEQ1); 10097 scsiseq1 |= ENSELI; 10098 ahd_outb(ahd, SCSISEQ1, scsiseq1); 10099 } 10100 ahd_unpause(ahd); 10101 ccb->ccb_h.status = CAM_REQ_CMP; 10102 xpt_print_path(ccb->ccb_h.path); 10103 printf("Lun now enabled for target mode\n"); 10104 } else { 10105 struct scb *scb; 10106 int i, empty; 10107 10108 if (lstate == NULL) { 10109 ccb->ccb_h.status = CAM_LUN_INVALID; 10110 return; 10111 } 10112 10113 ccb->ccb_h.status = CAM_REQ_CMP; 10114 LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { 10115 struct ccb_hdr *ccbh; 10116 10117 ccbh = &scb->io_ctx->ccb_h; 10118 if (ccbh->func_code == XPT_CONT_TARGET_IO 10119 && !xpt_path_comp(ccbh->path, ccb->ccb_h.path)){ 10120 printf("CTIO pending\n"); 10121 ccb->ccb_h.status = CAM_REQ_INVALID; 10122 return; 10123 } 10124 } 10125 10126 if (SLIST_FIRST(&lstate->accept_tios) != NULL) { 10127 printf("ATIOs pending\n"); 10128 ccb->ccb_h.status = CAM_REQ_INVALID; 10129 } 10130 10131 if (SLIST_FIRST(&lstate->immed_notifies) != NULL) { 10132 printf("INOTs pending\n"); 10133 ccb->ccb_h.status = CAM_REQ_INVALID; 10134 } 10135 10136 if (ccb->ccb_h.status != CAM_REQ_CMP) { 10137 return; 10138 } 10139 10140 xpt_print_path(ccb->ccb_h.path); 10141 printf("Target mode disabled\n"); 10142 xpt_free_path(lstate->path); 10143 free(lstate, M_DEVBUF); 10144 10145 ahd_pause(ahd); 10146 /* Can we clean up the target too? */ 10147 if (target != CAM_TARGET_WILDCARD) { 10148 tstate->enabled_luns[lun] = NULL; 10149 ahd->enabled_luns--; 10150 for (empty = 1, i = 0; i < 8; i++) 10151 if (tstate->enabled_luns[i] != NULL) { 10152 empty = 0; 10153 break; 10154 } 10155 10156 if (empty) { 10157 ahd_free_tstate(ahd, target, channel, 10158 /*force*/FALSE); 10159 if (ahd->features & AHD_MULTI_TID) { 10160 u_int targid_mask; 10161 10162 targid_mask = ahd_inw(ahd, TARGID); 10163 targid_mask &= ~target_mask; 10164 ahd_outw(ahd, TARGID, targid_mask); 10165 ahd_update_scsiid(ahd, targid_mask); 10166 } 10167 } 10168 } else { 10169 10170 ahd->black_hole = NULL; 10171 10172 /* 10173 * We can't allow selections without 10174 * our black hole device. 10175 */ 10176 empty = TRUE; 10177 } 10178 if (ahd->enabled_luns == 0) { 10179 /* Disallow select-in */ 10180 u_int scsiseq1; 10181 10182 scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE); 10183 scsiseq1 &= ~ENSELI; 10184 ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq1); 10185 scsiseq1 = ahd_inb(ahd, SCSISEQ1); 10186 scsiseq1 &= ~ENSELI; 10187 ahd_outb(ahd, SCSISEQ1, scsiseq1); 10188 10189 if ((ahd->features & AHD_MULTIROLE) == 0) { 10190 printf("Configuring Initiator Mode\n"); 10191 ahd->flags &= ~AHD_TARGETROLE; 10192 ahd->flags |= AHD_INITIATORROLE; 10193 ahd_pause(ahd); 10194 ahd_loadseq(ahd); 10195 ahd_restart(ahd); 10196 /* 10197 * Unpaused. The extra unpause 10198 * that follows is harmless. 10199 */ 10200 } 10201 } 10202 ahd_unpause(ahd); 10203 } 10204 #endif 10205 } 10206 10207 static void 10208 ahd_update_scsiid(struct ahd_softc *ahd, u_int targid_mask) 10209 { 10210 #if NOT_YET 10211 u_int scsiid_mask; 10212 u_int scsiid; 10213 10214 if ((ahd->features & AHD_MULTI_TID) == 0) 10215 panic("ahd_update_scsiid called on non-multitid unit\n"); 10216 10217 /* 10218 * Since we will rely on the TARGID mask 10219 * for selection enables, ensure that OID 10220 * in SCSIID is not set to some other ID 10221 * that we don't want to allow selections on. 10222 */ 10223 if ((ahd->features & AHD_ULTRA2) != 0) 10224 scsiid = ahd_inb(ahd, SCSIID_ULTRA2); 10225 else 10226 scsiid = ahd_inb(ahd, SCSIID); 10227 scsiid_mask = 0x1 << (scsiid & OID); 10228 if ((targid_mask & scsiid_mask) == 0) { 10229 u_int our_id; 10230 10231 /* ffs counts from 1 */ 10232 our_id = ffs(targid_mask); 10233 if (our_id == 0) 10234 our_id = ahd->our_id; 10235 else 10236 our_id--; 10237 scsiid &= TID; 10238 scsiid |= our_id; 10239 } 10240 if ((ahd->features & AHD_ULTRA2) != 0) 10241 ahd_outb(ahd, SCSIID_ULTRA2, scsiid); 10242 else 10243 ahd_outb(ahd, SCSIID, scsiid); 10244 #endif 10245 } 10246 10247 void 10248 ahd_run_tqinfifo(struct ahd_softc *ahd, int paused) 10249 { 10250 struct target_cmd *cmd; 10251 10252 ahd_sync_tqinfifo(ahd, BUS_DMASYNC_POSTREAD); 10253 while ((cmd = &ahd->targetcmds[ahd->tqinfifonext])->cmd_valid != 0) { 10254 10255 /* 10256 * Only advance through the queue if we 10257 * have the resources to process the command. 10258 */ 10259 if (ahd_handle_target_cmd(ahd, cmd) != 0) 10260 break; 10261 10262 cmd->cmd_valid = 0; 10263 ahd_dmamap_sync(ahd, ahd->shared_data_dmat, 10264 ahd->shared_data_dmamap, 10265 ahd_targetcmd_offset(ahd, ahd->tqinfifonext), 10266 sizeof(struct target_cmd), 10267 BUS_DMASYNC_PREREAD); 10268 ahd->tqinfifonext++; 10269 10270 /* 10271 * Lazily update our position in the target mode incoming 10272 * command queue as seen by the sequencer. 10273 */ 10274 if ((ahd->tqinfifonext & (HOST_TQINPOS - 1)) == 1) { 10275 u_int hs_mailbox; 10276 10277 hs_mailbox = ahd_inb(ahd, HS_MAILBOX); 10278 hs_mailbox &= ~HOST_TQINPOS; 10279 hs_mailbox |= ahd->tqinfifonext & HOST_TQINPOS; 10280 ahd_outb(ahd, HS_MAILBOX, hs_mailbox); 10281 } 10282 } 10283 } 10284 10285 static int 10286 ahd_handle_target_cmd(struct ahd_softc *ahd, struct target_cmd *cmd) 10287 { 10288 struct ahd_tmode_tstate *tstate; 10289 struct ahd_tmode_lstate *lstate; 10290 struct ccb_accept_tio *atio; 10291 uint8_t *byte; 10292 int initiator; 10293 int target; 10294 int lun; 10295 10296 initiator = SCSIID_TARGET(ahd, cmd->scsiid); 10297 target = SCSIID_OUR_ID(cmd->scsiid); 10298 lun = (cmd->identify & MSG_IDENTIFY_LUNMASK); 10299 10300 byte = cmd->bytes; 10301 tstate = ahd->enabled_targets[target]; 10302 lstate = NULL; 10303 if (tstate != NULL) 10304 lstate = tstate->enabled_luns[lun]; 10305 10306 /* 10307 * Commands for disabled luns go to the black hole driver. 10308 */ 10309 if (lstate == NULL) 10310 lstate = ahd->black_hole; 10311 10312 atio = (struct ccb_accept_tio*)SLIST_FIRST(&lstate->accept_tios); 10313 if (atio == NULL) { 10314 ahd->flags |= AHD_TQINFIFO_BLOCKED; 10315 /* 10316 * Wait for more ATIOs from the peripheral driver for this lun. 10317 */ 10318 return (1); 10319 } else 10320 ahd->flags &= ~AHD_TQINFIFO_BLOCKED; 10321 #ifdef AHD_DEBUG 10322 if ((ahd_debug & AHD_SHOW_TQIN) != 0) 10323 printf("Incoming command from %d for %d:%d%s\n", 10324 initiator, target, lun, 10325 lstate == ahd->black_hole ? "(Black Holed)" : ""); 10326 #endif 10327 SLIST_REMOVE_HEAD(&lstate->accept_tios, sim_links.sle); 10328 10329 if (lstate == ahd->black_hole) { 10330 /* Fill in the wildcards */ 10331 atio->ccb_h.target_id = target; 10332 atio->ccb_h.target_lun = lun; 10333 } 10334 10335 /* 10336 * Package it up and send it off to 10337 * whomever has this lun enabled. 10338 */ 10339 atio->sense_len = 0; 10340 atio->init_id = initiator; 10341 if (byte[0] != 0xFF) { 10342 /* Tag was included */ 10343 atio->tag_action = *byte++; 10344 atio->tag_id = *byte++; 10345 atio->ccb_h.flags = CAM_TAG_ACTION_VALID; 10346 } else { 10347 atio->ccb_h.flags = 0; 10348 } 10349 byte++; 10350 10351 /* Okay. Now determine the cdb size based on the command code */ 10352 switch (*byte >> CMD_GROUP_CODE_SHIFT) { 10353 case 0: 10354 atio->cdb_len = 6; 10355 break; 10356 case 1: 10357 case 2: 10358 atio->cdb_len = 10; 10359 break; 10360 case 4: 10361 atio->cdb_len = 16; 10362 break; 10363 case 5: 10364 atio->cdb_len = 12; 10365 break; 10366 case 3: 10367 default: 10368 /* Only copy the opcode. */ 10369 atio->cdb_len = 1; 10370 printf("Reserved or VU command code type encountered\n"); 10371 break; 10372 } 10373 10374 memcpy(atio->cdb_io.cdb_bytes, byte, atio->cdb_len); 10375 10376 atio->ccb_h.status |= CAM_CDB_RECVD; 10377 10378 if ((cmd->identify & MSG_IDENTIFY_DISCFLAG) == 0) { 10379 /* 10380 * We weren't allowed to disconnect. 10381 * We're hanging on the bus until a 10382 * continue target I/O comes in response 10383 * to this accept tio. 10384 */ 10385 #ifdef AHD_DEBUG 10386 if ((ahd_debug & AHD_SHOW_TQIN) != 0) 10387 printf("Received Immediate Command %d:%d:%d - %p\n", 10388 initiator, target, lun, ahd->pending_device); 10389 #endif 10390 ahd->pending_device = lstate; 10391 ahd_freeze_ccb((union ccb *)atio); 10392 atio->ccb_h.flags |= CAM_DIS_DISCONNECT; 10393 } 10394 xpt_done((union ccb*)atio); 10395 return (0); 10396 } 10397 10398 #endif 10399