Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/bs/bsvar.h
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1 /* $NecBSD: bsvar.h,v 1.2 1997/10/31 17:43:41 honda Exp $ */ 2 /* $NetBSD$ */ 3 /* 4 * [NetBSD for NEC PC98 series] 5 * Copyright (c) 1994, 1995, 1996 NetBSD/pc98 porting staff. 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 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 /* 32 * Copyright (c) 1994, 1995, 1996 Naofumi HONDA. All rights reserved. 33 */ 34 35 #define BS_INLINE inline 36 37 /************************************************** 38 * CONTROL FLAGS (cf_flags) 39 *************************************************/ 40 #define BSC_FASTACK 0x01 41 #define BSC_SMITSAT_DISEN 0x02 42 #define BSC_CHIP_CLOCK(dvcfg) (((dvcfg) >> 4) & 0x03) 43 44 #define BS_SCSI_SYNC DVF_SCSI_SYNC 45 #define BS_SCSI_DISC DVF_SCSI_DISC 46 #define BS_SCSI_WAIT DVF_SCSI_WAIT 47 #define BS_SCSI_LINK DVF_SCSI_LINK 48 #define BS_SCSI_QTAG DVF_SCSI_QTAG 49 #define BS_SCSI_NOSAT DVF_SCSI_SP0 50 #define BS_SCSI_NOPARITY DVF_SCSI_NOPARITY 51 #define BS_SCSI_SAVESP DVF_SCSI_SAVESP 52 #define BS_SCSI_NOSMIT DVF_SCSI_SP1 53 #define BS_SCSI_PERIOD(XXX) DVF_SCSI_PERIOD(XXX) 54 #define BS_SCSI_OFFSET(XXX) DVF_SCSI_OFFSET(XXX) 55 #define BS_SCSI_SYNCMASK DVF_SCSI_SYNCMASK 56 #define BS_SCSI_BITS DVF_SCSI_BITS 57 58 #define BS_SCSI_DEFCFG (BS_SCSI_NOSAT | DVF_SCSI_DEFCFG) 59 60 #define BS_SCSI_POSITIVE (BS_SCSI_SYNC | BS_SCSI_DISC | BS_SCSI_LINK) 61 #define BS_SCSI_NEGATIVE (BS_SCSI_WAIT | BS_SCSI_NOSAT | BS_SCSI_NOPARITY |\ 62 BS_SCSI_SAVESP | BS_SCSI_NOSMIT) 63 /******************************************* 64 * CONFIG SECTION 65 ******************************************/ 66 /* Enable timeout watch dog */ 67 #define BS_DEFAULT_TIMEOUT_SECOND 16 /* default 16 sec */ 68 #define BS_SYNC_TIMEOUT 16 69 #define BS_STARTUP_TIMEOUT 60 70 #define BS_MOTOR_TIMEOUT 120 71 #define BS_TIMEOUT_CHECK_INTERVAL 4 /* check each 4 sec */ 72 73 /* If you use memory over 16M */ 74 #ifdef SCSI_BOUNCE_SIZE 75 #define BS_BOUNCE_SIZE SCSI_BOUNCE_SIZE 76 #else /* !SCSI_BOUNCE_SIZE */ 77 #define BS_BOUNCE_SIZE 0 78 #endif /* !SCSI_BOUNCE_SIZE */ 79 80 /* debug */ 81 #define BS_STATICS 1 82 #define BS_DIAG 1 83 #define BS_DEBUG_ROUTINE 1 84 #define BS_DEBUG 1 85 /* #define SHOW_PORT 1 */ 86 87 /************************************************** 88 * PARAMETER 89 **************************************************/ 90 #define NTARGETS 8 91 #define RETRIES 4 /* number of retries before giving up */ 92 #define HARDRETRIES 3 93 #define XSMAX 4 94 #define BSDMABUFSIZ 0x10000 95 #define BS_MAX_CCB (XSMAX * (NTARGETS - 1)) 96 97 #define BSCMDSTART 0 98 #define BSCMDRESTART 0x01 99 #define BSCMDFORCE 0x02 100 101 #define BS_TIMEOUT_INTERVAL (hz * BS_TIMEOUT_CHECK_INTERVAL) 102 103 /************************************************** 104 * SCSI PHASE 105 **************************************************/ 106 enum scsi_phase { 107 FREE = 0, 108 HOSTQUEUE, 109 DISCONNECTED, 110 IOCOMPLETED, 111 ATTENTIONASSERT, 112 DISCONNECTASSERT, 113 SELECTASSERT, 114 SELECTED, 115 RESELECTED, 116 MSGIN, 117 MSGOUT, 118 STATUSIN, 119 CMDPHASE, 120 DATAPHASE, 121 SATSEL, 122 SATRESEL, 123 SATSDP, 124 SATCOMPSEQ, 125 UNDEF, 126 }; 127 128 /************************************************** 129 * SCSI PHASE CONTROL MACRO 130 **************************************************/ 131 #define BS_HOST_START \ 132 { \ 133 bsc->sc_nexus = ti; \ 134 } 135 136 #define BS_HOST_TERMINATE \ 137 { \ 138 bsc->sc_selwait = NULL; \ 139 bsc->sc_nexus = NULL; \ 140 } 141 142 #define BS_SELECTION_START \ 143 { \ 144 bsc->sc_selwait = ti; \ 145 } 146 147 #define BS_SELECTION_TERMINATE \ 148 { \ 149 bsc->sc_selwait = NULL; \ 150 } 151 152 #define BS_SETUP_PHASE(PHASE) \ 153 { \ 154 ti->ti_ophase = ti->ti_phase; \ 155 ti->ti_phase = (PHASE); \ 156 } 157 158 #define BS_SETUP_MSGPHASE(PHASE) \ 159 { \ 160 bsc->sc_msgphase = (PHASE); \ 161 } 162 163 #define BS_SETUP_SYNCSTATE(STATE) \ 164 { \ 165 ti->ti_syncnow.state = (STATE); \ 166 } 167 168 #define BS_SETUP_TARGSTATE(STATE) \ 169 { \ 170 ti->ti_state = (STATE); \ 171 } 172 173 #define BS_LOAD_SDP \ 174 { \ 175 bsc->sc_p.data = ti->ti_scsp.data; \ 176 bsc->sc_p.datalen = ti->ti_scsp.datalen; \ 177 bsc->sc_p.seglen = ti->ti_scsp.seglen; \ 178 } 179 180 #define BS_RESTORE_SDP \ 181 { \ 182 bsc->sc_p = ti->ti_scsp; \ 183 } 184 185 #define BS_SAVE_SDP \ 186 { \ 187 ti->ti_scsp = bsc->sc_p; \ 188 } 189 190 /************************************************** 191 * STRUCTURES 192 **************************************************/ 193 struct msgbase { 194 #define MAXMSGLEN 8 195 u_int8_t msg[MAXMSGLEN]; 196 u_int msglen; 197 198 u_int flag; 199 }; 200 201 struct syncdata { 202 u_int8_t period; 203 u_int8_t offset; 204 205 #define BS_SYNCMSG_NULL 0x00 206 #define BS_SYNCMSG_ASSERT 0x01 207 #define BS_SYNCMSG_REJECT 0x02 208 #define BS_SYNCMSG_ACCEPT 0x03 209 #define BS_SYNCMSG_REQUESTED 0x04 210 u_int state; 211 }; 212 213 struct sc_p { 214 u_int8_t *data; 215 int datalen; 216 217 u_int8_t *segaddr; 218 int seglen; 219 220 u_int8_t *bufp; 221 }; 222 223 /* targ_info error flags */ 224 #define BSDMAABNORMAL 0x01 225 #define BSCMDABNORMAL 0x02 226 #define BSPARITY 0x04 227 #define BSSTATUSERROR 0x08 228 #define BSTIMEOUT 0x10 229 #define BSREQSENSE 0x20 230 #define BSSELTIMEOUT 0x40 231 #define BSFATALIO 0x80 232 #define BSMSGERROR 0x100 233 #define BSTRYRECOV 0x200 234 #define BSABNORMAL 0x400 235 #define BSTARGETBUSY 0x800 236 237 #define BSERRORBITS "\020\014busy\013abnormal\012retry\011msgerr\010fatal\007seltimeout\006sense\005timeout\004statuserr\003parity\002cmderr\001dmaerr" 238 239 /* ccb & targ_info flags & cmd flags*/ 240 #define BSREAD 0x0001 241 #define BSSAT 0x0002 242 #define BSLINK 0x0004 243 #define BSERROROK 0x0008 244 #define BSSMIT 0x0010 245 #define BSDISC 0x1000 246 #define BSFORCEIOPOLL 0x2000 247 248 #define BSCASTAT 0x01000000 249 #define BSSENSECCB 0x02000000 250 #define BSQUEUED 0x04000000 251 #define BSALTBUF 0x08000000 252 #define BSITSDONE 0x10000000 253 #define BSNEXUS 0x20000000 254 255 #define BSCFLAGSMASK (0xffff) 256 257 struct ccb { 258 TAILQ_ENTRY(ccb) ccb_chain; 259 260 struct scsi_xfer *xs; /* upper drivers info */ 261 262 u_int lun; /* lun */ 263 264 u_int flags; /* control flags */ 265 266 int rcnt; /* retry counter of this ccb */ 267 268 u_int error; /* recorded error */ 269 270 /***************************************** 271 * scsi cmd & data 272 *****************************************/ 273 u_int8_t *cmd; /* scsi cmd */ 274 int cmdlen; 275 276 u_int8_t *data; /* scsi data */ 277 int datalen; 278 279 u_int8_t msgout[MAXMSGLEN]; /* scsi msgout */ 280 u_int msgoutlen; 281 282 /***************************************** 283 * timeout counter 284 *****************************************/ 285 int tc; 286 int tcmax; 287 }; 288 289 GENERIC_CCB_ASSERT(bs, ccb) 290 291 /* target info */ 292 struct targ_info { 293 TAILQ_ENTRY(targ_info) ti_tchain; /* targ_info link */ 294 295 TAILQ_ENTRY(targ_info) ti_wchain; /* wait link */ 296 297 struct bs_softc *ti_bsc; /* our controller */ 298 u_int ti_id; /* scsi id */ 299 u_int ti_lun; /* current lun */ 300 301 struct ccbtab ti_ctab, ti_bctab; /* ccb */ 302 303 #define BS_TARG_NULL 0 304 #define BS_TARG_CTRL 1 305 #define BS_TARG_START 2 306 #define BS_TARG_SYNCH 3 307 #define BS_TARG_RDY 4 308 int ti_state; /* target state */ 309 310 u_int ti_cfgflags; /* target cfg flags */ 311 312 u_int ti_flags; /* flags */ 313 u_int ti_mflags; /* flags masks */ 314 315 u_int ti_error; /* error flags */ 316 u_int ti_herrcnt; /* hardware err retry counter */ 317 318 /***************************************** 319 * scsi phase data 320 *****************************************/ 321 struct sc_p ti_scsp; /* saved scsi data pointer */ 322 323 enum scsi_phase ti_phase; /* scsi phase */ 324 enum scsi_phase ti_ophase; /* previous scsi phase */ 325 326 u_int8_t ti_status; /* status in */ 327 328 u_int8_t ti_msgin[MAXMSGLEN]; /* msgin buffer */ 329 int ti_msginptr; 330 331 u_int8_t ti_msgout; /* last msgout byte */ 332 u_int8_t ti_emsgout; /* last msgout byte */ 333 u_int ti_omsgoutlen; /* for retry msgout */ 334 335 struct syncdata ti_syncmax; /* synch data (scsi) */ 336 struct syncdata ti_syncnow; 337 u_int8_t ti_sync; /* synch val (chip) */ 338 339 /***************************************** 340 * bounce buffer & smit data pointer 341 *****************************************/ 342 u_int8_t *bounce_phys; 343 u_int8_t *bounce_addr; 344 u_int bounce_size; 345 346 u_long sm_offset; 347 348 /***************************************** 349 * target inq data 350 *****************************************/ 351 u_int8_t targ_type; 352 u_int8_t targ_support; 353 354 /***************************************** 355 * generic scsi cmd buffer for this target 356 *****************************************/ 357 u_int8_t scsi_cmd[12]; 358 struct scsi_sense_data sense; 359 }; 360 361 TAILQ_HEAD(titab, targ_info); 362 struct bshw; 363 364 struct bs_softc { 365 /***************************************** 366 * OS depend header 367 *****************************************/ 368 OS_DEPEND_DEVICE_HEADER 369 370 OS_DEPEND_SCSI_HEADER 371 372 OS_DEPEND_MISC_HEADER 373 374 /***************************************** 375 * target link 376 *****************************************/ 377 struct targ_info *sc_ti[NTARGETS]; 378 u_int sc_openf; 379 380 struct titab sc_sttab; 381 struct titab sc_titab; 382 383 /***************************************** 384 * current scsi phase 385 *****************************************/ 386 struct targ_info *sc_nexus; /* current active nexus */ 387 388 enum scsi_phase sc_msgphase; /* scsi phase pointed by msg */ 389 390 struct targ_info *sc_selwait; /* selection assert */ 391 392 u_int sc_dtgnum; /* disconnected target */ 393 394 /***************************************** 395 * current scsi data pointer 396 *****************************************/ 397 struct sc_p sc_p; /* scsi data pointer */ 398 399 int sc_dmadir; /* dma direction */ 400 401 int sm_tdatalen; /* smit data transfer bytes */ 402 403 /***************************************** 404 * parameter 405 *****************************************/ 406 u_int sc_retry; /* max retry count */ 407 408 #define BSDMATRANSFER 0x01 409 #define BSDMASTART 0x02 410 #define BSSMITSTART 0x04 411 #define BSUNDERRESET 0x08 412 #define BSRESET 0x10 413 #define BSSTARTTIMEOUT 0x20 414 #define BSPOLLDONE 0x100 415 #define BSJOBDONE 0x200 416 #define BSBSMODE 0x400 417 #define BSINACTIVE 0x800 418 volatile int sc_flags; /* host flags */ 419 420 #define BSC_NULL 0 421 #define BSC_BOOTUP 1 422 #define BSC_TARG_CHECK 2 423 #define BSC_RDY 3 424 int sc_hstate; /* host state */ 425 426 /***************************************** 427 * polling misc 428 *****************************************/ 429 u_int sc_wc; /* weight count */ 430 431 int sc_poll; 432 struct ccb *sc_outccb; 433 434 /***************************************** 435 * wd33c93 chip depend section 436 *****************************************/ 437 u_int sc_cfgflags; /* hardware cfg flags */ 438 439 struct bshw *sc_hw; /* hw selection */ 440 441 u_long sm_offset; /* smit buffer offset */ 442 443 u_int sc_RSTdelay; 444 445 int sc_hwlock; /* hardware lock count */ 446 447 int sc_iobase; /* iobase for FreeBSD */ 448 u_int32_t sc_irq; /* irq */ 449 450 u_int sc_dmachan; /* dma channel */ 451 u_int8_t sc_busstat; /* scsi bus status register */ 452 u_int8_t sc_hostid; /* host scsi id */ 453 u_int8_t sc_cspeed; /* chip clock rate */ 454 u_int8_t sc_membank; /* memory back (NEC) register */ 455 456 /***************************************** 457 * our name 458 *****************************************/ 459 #define BS_DVNAME_LEN 16 460 u_char sc_dvname[BS_DVNAME_LEN]; 461 }; 462 463 /************************************************* 464 * debug 465 *************************************************/ 466 #ifdef BS_STATICS 467 struct bs_statics { 468 u_int select; 469 u_int select_miss_in_assert; 470 u_int select_miss_by_reselect; 471 u_int select_miss; 472 u_int select_win; 473 u_int selected; 474 u_int disconnected; 475 u_int reselect; 476 }; 477 478 extern struct bs_statics bs_statics[NTARGETS]; 479 extern u_int bs_linkcmd_count[]; 480 extern u_int bs_bounce_used[]; 481 #endif /* BS_STATICS */ 482 483 #ifdef BS_DEBUG_ROUTINE 484 #ifndef DDB 485 #define Debugger() panic("should call debugger here (bs.c)") 486 #endif /* DDB */ 487 #ifdef BS_DEBUG 488 extern int bs_debug_flag; 489 #endif /* BS_DEBUG */ 490 #endif /* BS_DEBUG_ROUTINE */ 491 492 /************************************************* 493 * Function declare 494 *************************************************/ 495 int bs_scsi_cmd_internal __P((struct ccb *, u_int)); 496 struct ccb *bscmddone __P((struct targ_info *)); 497 int bscmdstart __P((struct targ_info *, int)); 498 int bs_scsi_cmd_poll __P((struct targ_info *, struct ccb *)); 499 int bs_sequencer __P((struct bs_softc *)); 500 void bs_poll_timeout __P((struct bs_softc *, char *)); 501 502 /************************************************* 503 * XXX 504 *************************************************/ 505 /* misc error */ 506 #define NOTARGET -2 507 #define HASERROR -1 508 509 /* XXX: use scsi_message.h */ 510 /* status */ 511 #define ST_GOOD 0x00 512 #define ST_CHKCOND 0x02 513 #define ST_MET 0x04 514 #define ST_BUSY 0x08 515 #define ST_INTERGOOD 0x10 516 #define ST_INTERMET 0x14 517 #define ST_CONFLICT 0x18 518 #define ST_QUEFULL 0x28 519 #define ST_UNK 0xff 520 521 /* message */ 522 #define MSG_COMP 0x00 523 #define MSG_EXTEND 0x01 524 525 #define MKMSG_EXTEND(XLEN, XCODE) ((((u_int)(XLEN)) << NBBY) | ((u_int)(XCODE))) 526 #define MSG_EXTEND_MDPCODE 0x00 527 #define MSG_EXTEND_MDPLEN 0x05 528 #define MSG_EXTEND_SYNCHCODE 0x01 529 #define MSG_EXTEND_SYNCHLEN 0x03 530 #define MSG_EXTEND_WIDECODE 0x03 531 #define MSG_EXTEND_WIDELEN 0x02 532 533 #define MSG_SAVESP 0x02 534 #define MSG_RESTORESP 0x03 535 #define MSG_DISCON 0x04 536 #define MSG_I_ERROR 0x05 537 #define MSG_ABORT 0x06 538 #define MSG_REJECT 0x07 539 #define MSG_NOOP 0x08 540 #define MSG_PARITY 0x09 541 #define MSG_LCOMP 0x0a 542 #define MSG_LCOMP_F 0x0b 543 #define MSG_RESET 0x0c
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