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 * $FreeBSD: releng/5.1/sys/i386/isa/bs/bsvar.h 92765 2002-03-20 07:51:46Z alfred $ 32 */ 33 /* 34 * Copyright (c) 1994, 1995, 1996 Naofumi HONDA. All rights reserved. 35 */ 36 37 #ifdef __FreeBSD__ 38 #define BS_INLINE __inline 39 #else 40 #define BS_INLINE inline 41 #endif 42 43 /************************************************** 44 * CONTROL FLAGS (cf_flags) 45 *************************************************/ 46 #define BSC_FASTACK 0x01 47 #define BSC_SMITSAT_DISEN 0x02 48 #define BSC_CHIP_CLOCK(dvcfg) (((dvcfg) >> 4) & 0x03) 49 50 #define BS_SCSI_SYNC DVF_SCSI_SYNC 51 #define BS_SCSI_DISC DVF_SCSI_DISC 52 #define BS_SCSI_WAIT DVF_SCSI_WAIT 53 #define BS_SCSI_LINK DVF_SCSI_LINK 54 #define BS_SCSI_QTAG DVF_SCSI_QTAG 55 #define BS_SCSI_NOSAT DVF_SCSI_SP0 56 #define BS_SCSI_NOPARITY DVF_SCSI_NOPARITY 57 #define BS_SCSI_SAVESP DVF_SCSI_SAVESP 58 #define BS_SCSI_NOSMIT DVF_SCSI_SP1 59 #define BS_SCSI_PERIOD(XXX) DVF_SCSI_PERIOD(XXX) 60 #define BS_SCSI_OFFSET(XXX) DVF_SCSI_OFFSET(XXX) 61 #define BS_SCSI_SYNCMASK DVF_SCSI_SYNCMASK 62 #define BS_SCSI_BITS DVF_SCSI_BITS 63 64 #define BS_SCSI_DEFCFG (BS_SCSI_NOSAT | DVF_SCSI_DEFCFG) 65 66 #define BS_SCSI_POSITIVE (BS_SCSI_SYNC | BS_SCSI_DISC | BS_SCSI_LINK) 67 #define BS_SCSI_NEGATIVE (BS_SCSI_WAIT | BS_SCSI_NOSAT | BS_SCSI_NOPARITY |\ 68 BS_SCSI_SAVESP | BS_SCSI_NOSMIT) 69 /******************************************* 70 * CONFIG SECTION 71 ******************************************/ 72 /* Enable timeout watch dog */ 73 #define BS_DEFAULT_TIMEOUT_SECOND 16 /* default 16 sec */ 74 #define BS_SYNC_TIMEOUT 16 75 #define BS_STARTUP_TIMEOUT 60 76 #define BS_MOTOR_TIMEOUT 120 77 #define BS_TIMEOUT_CHECK_INTERVAL 4 /* check each 4 sec */ 78 79 /* If you use memory over 16M */ 80 #ifdef SCSI_BOUNCE_SIZE 81 #define BS_BOUNCE_SIZE SCSI_BOUNCE_SIZE 82 #else /* !SCSI_BOUNCE_SIZE */ 83 #define BS_BOUNCE_SIZE 0 84 #endif /* !SCSI_BOUNCE_SIZE */ 85 86 /* debug */ 87 #define BS_STATICS 1 88 #define BS_DIAG 1 89 #define BS_DEBUG_ROUTINE 1 90 #define BS_DEBUG 1 91 /* #define SHOW_PORT 1 */ 92 93 /************************************************** 94 * PARAMETER 95 **************************************************/ 96 #define NTARGETS 8 97 #define RETRIES 1 /* number of retries before giving up */ 98 #define HARDRETRIES 3 99 #define XSMAX 4 100 #define BSDMABUFSIZ 0x10000 101 #define BS_MAX_CCB (XSMAX * (NTARGETS - 1)) 102 103 #define BSCMDSTART 0 104 #define BSCMDRESTART 0x01 105 #define BSCMDFORCE 0x02 106 107 #define BS_TIMEOUT_INTERVAL (hz * BS_TIMEOUT_CHECK_INTERVAL) 108 109 /************************************************** 110 * SCSI PHASE 111 **************************************************/ 112 enum scsi_phase { 113 FREE = 0, 114 HOSTQUEUE, 115 DISCONNECTED, 116 IOCOMPLETED, 117 ATTENTIONASSERT, 118 DISCONNECTASSERT, 119 SELECTASSERT, 120 SELECTED, 121 RESELECTED, 122 MSGIN, 123 MSGOUT, 124 STATUSIN, 125 CMDPHASE, 126 DATAPHASE, 127 SATSEL, 128 SATRESEL, 129 SATSDP, 130 SATCOMPSEQ, 131 UNDEF, 132 }; 133 134 /************************************************** 135 * SCSI PHASE CONTROL MACRO 136 **************************************************/ 137 #define BS_HOST_START \ 138 { \ 139 bsc->sc_nexus = ti; \ 140 } 141 142 #define BS_HOST_TERMINATE \ 143 { \ 144 bsc->sc_selwait = NULL; \ 145 bsc->sc_nexus = NULL; \ 146 } 147 148 #define BS_SELECTION_START \ 149 { \ 150 bsc->sc_selwait = ti; \ 151 } 152 153 #define BS_SELECTION_TERMINATE \ 154 { \ 155 bsc->sc_selwait = NULL; \ 156 } 157 158 #define BS_SETUP_PHASE(PHASE) \ 159 { \ 160 ti->ti_ophase = ti->ti_phase; \ 161 ti->ti_phase = (PHASE); \ 162 } 163 164 #define BS_SETUP_MSGPHASE(PHASE) \ 165 { \ 166 bsc->sc_msgphase = (PHASE); \ 167 } 168 169 #define BS_SETUP_SYNCSTATE(STATE) \ 170 { \ 171 ti->ti_syncnow.state = (STATE); \ 172 } 173 174 #define BS_SETUP_TARGSTATE(STATE) \ 175 { \ 176 ti->ti_state = (STATE); \ 177 } 178 179 #define BS_LOAD_SDP \ 180 { \ 181 bsc->sc_p.data = ti->ti_scsp.data; \ 182 bsc->sc_p.datalen = ti->ti_scsp.datalen; \ 183 bsc->sc_p.seglen = ti->ti_scsp.seglen; \ 184 } 185 186 #define BS_RESTORE_SDP \ 187 { \ 188 bsc->sc_p = ti->ti_scsp; \ 189 } 190 191 #define BS_SAVE_SDP \ 192 { \ 193 ti->ti_scsp = bsc->sc_p; \ 194 } 195 196 /************************************************** 197 * STRUCTURES 198 **************************************************/ 199 struct msgbase { 200 #define MAXMSGLEN 8 201 u_int8_t msg[MAXMSGLEN]; 202 u_int msglen; 203 204 u_int flag; 205 }; 206 207 struct syncdata { 208 u_int8_t period; 209 u_int8_t offset; 210 211 #define BS_SYNCMSG_NULL 0x00 212 #define BS_SYNCMSG_ASSERT 0x01 213 #define BS_SYNCMSG_REJECT 0x02 214 #define BS_SYNCMSG_ACCEPT 0x03 215 #define BS_SYNCMSG_REQUESTED 0x04 216 u_int state; 217 }; 218 219 struct sc_p { 220 u_int8_t *data; 221 int datalen; 222 223 u_int8_t *segaddr; 224 int seglen; 225 226 u_int8_t *bufp; 227 }; 228 229 /* targ_info error flags */ 230 #define BSDMAABNORMAL 0x01 231 #define BSCMDABNORMAL 0x02 232 #define BSPARITY 0x04 233 #define BSSTATUSERROR 0x08 234 #define BSTIMEOUT 0x10 235 #define BSREQSENSE 0x20 236 #define BSSELTIMEOUT 0x40 237 #define BSFATALIO 0x80 238 #define BSMSGERROR 0x100 239 #define BSTRYRECOV 0x200 240 #define BSABNORMAL 0x400 241 #define BSTARGETBUSY 0x800 242 243 #define BSERRORBITS "\020\014busy\013abnormal\012retry\011msgerr\010fatal\007seltimeout\006sense\005timeout\004statuserr\003parity\002cmderr\001dmaerr" 244 245 /* bsccb bsccb_flags & targ_info flags & cmd flags*/ 246 #define BSREAD 0x0001 247 #define BSSAT 0x0002 248 #define BSLINK 0x0004 249 #define BSERROROK 0x0008 250 #define BSSMIT 0x0010 251 #define BSDISC 0x1000 252 #define BSFORCEIOPOLL 0x2000 253 254 #define BSCASTAT 0x01000000 255 #define BSSENSECCB 0x02000000 256 #define BSQUEUED 0x04000000 257 #define BSALTBUF 0x08000000 258 #define BSITSDONE 0x10000000 259 #define BSNEXUS 0x20000000 260 261 #define BSCFLAGSMASK (0xffff) 262 263 struct bsccb { 264 TAILQ_ENTRY(bsccb) ccb_chain; 265 266 union ccb *ccb; /* upper drivers info */ 267 268 u_int lun; /* lun */ 269 270 u_int bsccb_flags; /* control flags */ 271 272 int rcnt; /* retry counter of this ccb */ 273 274 u_int error; /* recorded error */ 275 276 /***************************************** 277 * scsi cmd & data 278 *****************************************/ 279 u_int8_t *cmd; /* scsi cmd */ 280 int cmdlen; 281 282 u_int8_t *data; /* scsi data */ 283 int datalen; 284 285 u_int8_t msgout[MAXMSGLEN]; /* scsi msgout */ 286 u_int msgoutlen; 287 288 /***************************************** 289 * timeout counter 290 *****************************************/ 291 int tc; 292 int tcmax; 293 }; 294 295 GENERIC_CCB_ASSERT(bs, bsccb) 296 297 /* target info */ 298 struct targ_info { 299 /**/ TAILQ_ENTRY(targ_info) ti_tchain; /* targ_info link */ 300 301 /*4*/ TAILQ_ENTRY(targ_info) ti_wchain; /* wait link */ 302 303 /*8*/ struct bs_softc *ti_bsc; /* our controller */ 304 /*c*/ u_int ti_id; /* scsi id */ 305 /*10*/ u_int ti_lun; /* current lun */ 306 307 /*14*/ struct bsccbtab ti_ctab, ti_bctab; /* ccb */ 308 309 #define BS_TARG_NULL 0 310 #define BS_TARG_CTRL 1 311 #define BS_TARG_START 2 312 #define BS_TARG_SYNCH 3 313 #define BS_TARG_RDY 4 314 /*24*/ int ti_state; /* target state */ 315 316 /*28*/ u_int ti_cfgflags; /* target cfg flags */ 317 318 /*2c*/ u_int ti_flags; /* flags */ 319 /*30*/ u_int ti_mflags; /* flags masks */ 320 321 /*34*/ u_int ti_error; /* error flags */ 322 /*38*/ u_int ti_herrcnt; /* hardware err retry counter */ 323 324 /***************************************** 325 * scsi phase data 326 *****************************************/ 327 /*3c*/ struct sc_p ti_scsp; /* saved scsi data pointer */ 328 329 /*50*/ enum scsi_phase ti_phase; /* scsi phase */ 330 /*54*/ enum scsi_phase ti_ophase; /* previous scsi phase */ 331 332 /*58*/ u_int8_t ti_status; /* status in */ 333 334 /*59*/ u_int8_t ti_msgin[MAXMSGLEN]; /* msgin buffer */ 335 /*64*/ int ti_msginptr; 336 337 /*68*/ u_int8_t ti_msgout; /* last msgout byte */ 338 /*69*/ u_int8_t ti_emsgout; /* last msgout byte */ 339 /*6c*/ u_int ti_omsgoutlen; /* for retry msgout */ 340 341 /*70*/ struct syncdata ti_syncmax; /* synch data (scsi) */ 342 /*72*/ struct syncdata ti_syncnow; 343 /*74*/ u_int8_t ti_sync; /* synch val (chip) */ 344 345 /***************************************** 346 * bounce buffer & smit data pointer 347 *****************************************/ 348 /*75*/ u_int8_t *bounce_phys; 349 /*76*/ u_int8_t *bounce_addr; 350 /*78*/ u_int bounce_size; 351 352 /*7c*/ u_long sm_offset; 353 354 /***************************************** 355 * target inq data 356 *****************************************/ 357 /*79*/ u_int8_t targ_type; 358 /*7a*/ u_int8_t targ_support; 359 360 /***************************************** 361 * generic scsi cmd buffer for this target 362 *****************************************/ 363 /*7b*/ u_int8_t scsi_cmd[12]; 364 struct scsi_sense_data sense; 365 }; 366 367 TAILQ_HEAD(titab, targ_info); 368 struct bshw; 369 370 struct bs_softc { 371 /***************************************** 372 * OS depend header 373 *****************************************/ 374 OS_DEPEND_DEVICE_HEADER 375 376 OS_DEPEND_MISC_HEADER 377 378 /***************************************** 379 * target link 380 *****************************************/ 381 struct targ_info *sc_ti[NTARGETS]; 382 u_int sc_openf; 383 384 struct titab sc_sttab; 385 struct titab sc_titab; 386 387 /***************************************** 388 * current scsi phase 389 *****************************************/ 390 struct targ_info *sc_nexus; /* current active nexus */ 391 392 enum scsi_phase sc_msgphase; /* scsi phase pointed by msg */ 393 394 struct targ_info *sc_selwait; /* selection assert */ 395 396 u_int sc_dtgnum; /* disconnected target */ 397 398 /***************************************** 399 * current scsi data pointer 400 *****************************************/ 401 struct sc_p sc_p; /* scsi data pointer */ 402 403 int sc_dmadir; /* dma direction */ 404 405 int sm_tdatalen; /* smit data transfer bytes */ 406 407 /***************************************** 408 * parameter 409 *****************************************/ 410 u_int sc_retry; /* max retry count */ 411 412 #define BSDMATRANSFER 0x01 413 #define BSDMASTART 0x02 414 #define BSSMITSTART 0x04 415 #define BSUNDERRESET 0x08 416 #define BSRESET 0x10 417 #define BSSTARTTIMEOUT 0x20 418 #define BSPOLLDONE 0x100 419 #define BSJOBDONE 0x200 420 #define BSBSMODE 0x400 421 #define BSINACTIVE 0x800 422 volatile int sc_flags; /* host flags */ 423 424 #define BSC_NULL 0 425 #define BSC_BOOTUP 1 426 #define BSC_TARG_CHECK 2 427 #define BSC_RDY 3 428 int sc_hstate; /* host state */ 429 430 /***************************************** 431 * polling misc 432 *****************************************/ 433 u_int sc_wc; /* weight count */ 434 435 int sc_poll; 436 struct bsccb *sc_outccb; 437 438 /***************************************** 439 * wd33c93 chip depend section 440 *****************************************/ 441 u_int sc_cfgflags; /* hardware cfg flags */ 442 443 struct bshw *sc_hw; /* hw selection */ 444 445 u_long sm_offset; /* smit buffer offset */ 446 447 u_int sc_RSTdelay; 448 449 int sc_hwlock; /* hardware lock count */ 450 451 int sc_iobase; /* iobase for FreeBSD */ 452 u_int32_t sc_irq; /* irq */ 453 454 u_int sc_dmachan; /* dma channel */ 455 u_int8_t sc_busstat; /* scsi bus status register */ 456 u_int8_t sc_hostid; /* host scsi id */ 457 u_int8_t sc_cspeed; /* chip clock rate */ 458 u_int8_t sc_membank; /* memory back (NEC) register */ 459 460 /***************************************** 461 * our name 462 *****************************************/ 463 #define BS_DVNAME_LEN 16 464 u_char sc_dvname[BS_DVNAME_LEN]; 465 466 /***************************************** 467 * CAM support 468 *****************************************/ 469 struct cam_sim *sim; 470 struct cam_path *path; 471 }; 472 473 /************************************************* 474 * debug 475 *************************************************/ 476 #ifdef BS_STATICS 477 struct bs_statics { 478 u_int select; 479 u_int select_miss_in_assert; 480 u_int select_miss_by_reselect; 481 u_int select_miss; 482 u_int select_win; 483 u_int selected; 484 u_int disconnected; 485 u_int reselect; 486 }; 487 488 extern struct bs_statics bs_statics[NTARGETS]; 489 extern u_int bs_linkcmd_count[]; 490 extern u_int bs_bounce_used[]; 491 #endif /* BS_STATICS */ 492 493 #ifdef BS_DEBUG_ROUTINE 494 #ifndef DDB 495 #define Debugger() panic("should call debugger here (bs.c)") 496 #endif /* DDB */ 497 #ifdef BS_DEBUG 498 extern int bs_debug_flag; 499 #endif /* BS_DEBUG */ 500 #endif /* BS_DEBUG_ROUTINE */ 501 502 /************************************************* 503 * Function declare 504 *************************************************/ 505 int bs_scsi_cmd_internal(struct bsccb *, u_int); 506 struct bsccb *bscmddone(struct targ_info *); 507 int bscmdstart(struct targ_info *, int); 508 int bs_scsi_cmd_poll(struct targ_info *, struct bsccb *); 509 int bs_sequencer(struct bs_softc *); 510 void bs_poll_timeout(struct bs_softc *, char *); 511 512 /************************************************* 513 * XXX 514 *************************************************/ 515 /* misc error */ 516 #define COMPLETE 2 517 #define NOTARGET (-2) 518 #define HASERROR (-1) 519 520 /* XXX: use scsi_message.h */ 521 /* status */ 522 #define ST_GOOD 0x00 523 #define ST_CHKCOND 0x02 524 #define ST_MET 0x04 525 #define ST_BUSY 0x08 526 #define ST_INTERGOOD 0x10 527 #define ST_INTERMET 0x14 528 #define ST_CONFLICT 0x18 529 #define ST_QUEFULL 0x28 530 #define ST_UNK 0xff 531 532 /* message */ 533 #define MSG_COMP 0x00 534 #define MSG_EXTEND 0x01 535 536 #define MKMSG_EXTEND(XLEN, XCODE) ((((u_int)(XLEN)) << NBBY) | ((u_int)(XCODE))) 537 #define MSG_EXTEND_MDPCODE 0x00 538 #define MSG_EXTEND_MDPLEN 0x05 539 #define MSG_EXTEND_SYNCHCODE 0x01 540 #define MSG_EXTEND_SYNCHLEN 0x03 541 #define MSG_EXTEND_WIDECODE 0x03 542 #define MSG_EXTEND_WIDELEN 0x02 543 544 #define MSG_SAVESP 0x02 545 #define MSG_RESTORESP 0x03 546 #define MSG_DISCON 0x04 547 #define MSG_I_ERROR 0x05 548 #define MSG_ABORT 0x06 549 #define MSG_REJECT 0x07 550 #define MSG_NOOP 0x08 551 #define MSG_PARITY 0x09 552 #define MSG_LCOMP 0x0a 553 #define MSG_LCOMP_F 0x0b 554 #define MSG_RESET 0x0c
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