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sys/cam/scsi/scsi_low.h
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1 /* $FreeBSD: releng/10.0/sys/cam/scsi/scsi_low.h 240325 2012-09-10 18:49:49Z jhb $ */ 2 /* $NecBSD: scsi_low.h,v 1.24.10.5 2001/06/26 07:31:46 honda Exp $ */ 3 /* $NetBSD$ */ 4 5 #define SCSI_LOW_DIAGNOSTIC 6 #define SCSI_LOW_ALT_QTAG_ALLOCATE 7 8 /*- 9 * [NetBSD for NEC PC-98 series] 10 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001 11 * NetBSD/pc98 porting staff. All rights reserved. 12 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001 13 * Naofumi HONDA. All rights reserved. 14 * 15 * [Ported for FreeBSD CAM] 16 * Copyright (c) 2000, 2001 17 * MITSUNAGA Noriaki, NOKUBI Hirotaka and TAKAHASHI Yoshihiro. 18 * All rights reserved. 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 1. Redistributions of source code must retain the above copyright 24 * notice, this list of conditions and the following disclaimer. 25 * 2. Redistributions in binary form must reproduce the above copyright 26 * notice, this list of conditions and the following disclaimer in the 27 * documentation and/or other materials provided with the distribution. 28 * 3. The name of the author may not be used to endorse or promote products 29 * derived from this software without specific prior written permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 32 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 33 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 34 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 35 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 36 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 37 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 40 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGE. 42 */ 43 44 #ifndef _SCSI_LOW_H_ 45 #define _SCSI_LOW_H_ 46 47 /*================================================ 48 * Scsi low OSDEP 49 * (All os depend structures should be here!) 50 ================================================*/ 51 /******** includes *******************************/ 52 53 #include <sys/bus.h> 54 #include <sys/kdb.h> 55 #include <cam/cam.h> 56 #include <cam/cam_ccb.h> 57 #include <cam/cam_sim.h> 58 #include <cam/cam_xpt_sim.h> 59 #include <cam/cam_debug.h> 60 61 #include <cam/scsi/scsi_dvcfg.h> 62 #include <i386/isa/ccbque.h> 63 64 /******** functions macro ************************/ 65 66 #undef MSG_IDENTIFY 67 68 /******** os depend interface structures **********/ 69 typedef struct scsi_sense_data scsi_low_osdep_sense_data_t; 70 71 struct scsi_low_osdep_interface { 72 device_t si_dev; 73 74 struct cam_sim *sim; 75 struct cam_path *path; 76 77 int si_poll_count; 78 79 struct callout_handle engage_ch; 80 struct callout_handle timeout_ch; 81 #ifdef SCSI_LOW_POWFUNC 82 struct callout_handle recover_ch; 83 #endif 84 }; 85 86 /******** os depend interface functions *************/ 87 struct slccb; 88 struct scsi_low_softc; 89 #define SCSI_LOW_TIMEOUT_STOP 0 90 #define SCSI_LOW_TIMEOUT_START 1 91 #define SCSI_LOW_TIMEOUT_CH_IO 0 92 #define SCSI_LOW_TIMEOUT_CH_ENGAGE 1 93 #define SCSI_LOW_TIMEOUT_CH_RECOVER 2 94 95 struct scsi_low_osdep_funcs { 96 int (*scsi_low_osdep_attach) \ 97 (struct scsi_low_softc *); 98 int (*scsi_low_osdep_world_start) \ 99 (struct scsi_low_softc *); 100 int (*scsi_low_osdep_dettach) \ 101 (struct scsi_low_softc *); 102 int (*scsi_low_osdep_ccb_setup) \ 103 (struct scsi_low_softc *, struct slccb *); 104 int (*scsi_low_osdep_done) \ 105 (struct scsi_low_softc *, struct slccb *); 106 void (*scsi_low_osdep_timeout) \ 107 (struct scsi_low_softc *, int, int); 108 }; 109 110 /*================================================ 111 * Generic Scsi Low header file 112 * (All os depend structures should be above!) 113 ================================================*/ 114 /************************************************* 115 * Scsi low definitions 116 *************************************************/ 117 #define SCSI_LOW_SYNC DVF_SCSI_SYNC 118 #define SCSI_LOW_DISC DVF_SCSI_DISC 119 #define SCSI_LOW_WAIT DVF_SCSI_WAIT 120 #define SCSI_LOW_LINK DVF_SCSI_LINK 121 #define SCSI_LOW_QTAG DVF_SCSI_QTAG 122 #define SCSI_LOW_NOPARITY DVF_SCSI_NOPARITY 123 #define SCSI_LOW_SAVESP DVF_SCSI_SAVESP 124 #define SCSI_LOW_DEFCFG DVF_SCSI_DEFCFG 125 #define SCSI_LOW_BITS DVF_SCSI_BITS 126 127 #define SCSI_LOW_PERIOD(n) DVF_SCSI_PERIOD(n) 128 #define SCSI_LOW_OFFSET(n) DVF_SCSI_OFFSET(n) 129 130 /* host scsi id and targets macro */ 131 #ifndef SCSI_LOW_NTARGETS 132 #define SCSI_LOW_NTARGETS 8 133 #endif /* SCSI_LOW_NTARGETS */ 134 #define SCSI_LOW_NCCB 128 135 136 #define SCSI_LOW_MAX_RETRY 3 137 #define SCSI_LOW_MAX_SELECTION_RETRY 10 138 139 /* timeout control macro */ 140 #define SCSI_LOW_TIMEOUT_HZ 10 141 #define SCSI_LOW_MIN_TOUT 12 142 #define SCSI_LOW_TIMEOUT_CHECK_INTERVAL 1 143 #define SCSI_LOW_POWDOWN_TC 15 144 #define SCSI_LOW_MAX_PHCHANGES 256 145 #define SCSI2_RESET_DELAY 5000000 146 147 /* msg */ 148 #define SCSI_LOW_MAX_MSGLEN 32 149 #define SCSI_LOW_MSG_LOG_DATALEN 8 150 151 /************************************************* 152 * Scsi Data Pointer 153 *************************************************/ 154 /* scsi pointer */ 155 struct sc_p { 156 u_int8_t *scp_data; 157 int scp_datalen; 158 159 u_int8_t *scp_cmd; 160 int scp_cmdlen; 161 162 u_int8_t scp_direction; 163 #define SCSI_LOW_RWUNK (-1) 164 #define SCSI_LOW_WRITE 0 165 #define SCSI_LOW_READ 1 166 u_int8_t scp_status; 167 u_int8_t scp_spare[2]; 168 }; 169 170 /************************************************* 171 * Command Control Block Structure 172 *************************************************/ 173 typedef int scsi_low_tag_t; 174 struct targ_info; 175 176 #define SCSI_LOW_UNKLUN ((u_int) -1) 177 #define SCSI_LOW_UNKTAG ((scsi_low_tag_t) -1) 178 179 struct slccb { 180 TAILQ_ENTRY(slccb) ccb_chain; 181 182 void *osdep; /* os depend structure */ 183 184 struct targ_info *ti; /* targ_info */ 185 struct lun_info *li; /* lun info */ 186 struct buf *bp; /* io bufs */ 187 188 scsi_low_tag_t ccb_tag; /* effective qtag */ 189 scsi_low_tag_t ccb_otag; /* allocated qtag */ 190 191 /***************************************** 192 * Scsi data pointers (original and saved) 193 *****************************************/ 194 struct sc_p ccb_scp; /* given */ 195 struct sc_p ccb_sscp; /* saved scsi data pointer */ 196 int ccb_datalen; /* transfered data counter */ 197 198 /***************************************** 199 * Msgout 200 *****************************************/ 201 u_int ccb_msgoutflag; 202 u_int ccb_omsgoutflag; 203 204 /***************************************** 205 * Error or Timeout counters 206 *****************************************/ 207 u_int ccb_flags; 208 #define CCB_INTERNAL 0x0001 209 #define CCB_SENSE 0x0002 210 #define CCB_CLEARQ 0x0004 211 #define CCB_DISCQ 0x0008 212 #define CCB_STARTQ 0x0010 213 #define CCB_POLLED 0x0100 /* polling ccb */ 214 #define CCB_NORETRY 0x0200 /* do NOT retry */ 215 #define CCB_AUTOSENSE 0x0400 /* do a sence after CA */ 216 #define CCB_URGENT 0x0800 /* an urgent ccb */ 217 #define CCB_NOSDONE 0x1000 /* do not call an os done routine */ 218 #define CCB_SCSIIO 0x2000 /* a normal scsi io coming from upper layer */ 219 #define CCB_SILENT 0x4000 /* no terminate messages */ 220 221 u_int ccb_error; 222 223 int ccb_rcnt; /* retry counter */ 224 int ccb_selrcnt; /* selection retry counter */ 225 int ccb_tc; /* timer counter */ 226 int ccb_tcmax; /* max timeout */ 227 228 /***************************************** 229 * Sense data buffer 230 *****************************************/ 231 u_int8_t ccb_scsi_cmd[12]; 232 scsi_low_osdep_sense_data_t ccb_sense; 233 }; 234 235 /************************************************* 236 * Slccb functions 237 *************************************************/ 238 GENERIC_CCB_ASSERT(scsi_low, slccb) 239 240 /************************************************* 241 * Target and Lun structures 242 *************************************************/ 243 struct scsi_low_softc; 244 LIST_HEAD(scsi_low_softc_tab, scsi_low_softc); 245 TAILQ_HEAD(targ_info_tab, targ_info); 246 LIST_HEAD(lun_info_tab, lun_info); 247 248 struct lun_info { 249 int li_lun; 250 struct targ_info *li_ti; /* my target */ 251 252 LIST_ENTRY(lun_info) lun_chain; /* targ_info link */ 253 254 struct slccbtab li_discq; /* disconnect queue */ 255 256 /* 257 * qtag control 258 */ 259 int li_maxnexus; 260 int li_maxnqio; 261 int li_nqio; 262 int li_disc; 263 264 #define SCSI_LOW_MAXNEXUS (sizeof(u_int) * NBBY) 265 u_int li_qtagbits; 266 267 #ifdef SCSI_LOW_ALT_QTAG_ALLOCATE 268 u_int8_t li_qtagarray[SCSI_LOW_MAXNEXUS]; 269 u_int li_qd; 270 #endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */ 271 272 #define SCSI_LOW_QFLAG_CA_QCLEAR 0x01 273 u_int li_qflags; 274 275 /* 276 * lun state 277 */ 278 #define SCSI_LOW_LUN_SLEEP 0x00 279 #define SCSI_LOW_LUN_START 0x01 280 #define SCSI_LOW_LUN_INQ 0x02 281 #define SCSI_LOW_LUN_MODEQ 0x03 282 #define SCSI_LOW_LUN_OK 0x04 283 u_int li_state; /* target lun state */ 284 285 /* 286 * lun control flags 287 */ 288 u_int li_flags_valid; /* valid flags */ 289 #define SCSI_LOW_LUN_FLAGS_USER_VALID 0x0001 290 #define SCSI_LOW_LUN_FLAGS_DISK_VALID 0x0002 291 #define SCSI_LOW_LUN_FLAGS_QUIRKS_VALID 0x0004 292 #define SCSI_LOW_LUN_FLAGS_ALL_VALID \ 293 (SCSI_LOW_LUN_FLAGS_USER_VALID | \ 294 SCSI_LOW_LUN_FLAGS_DISK_VALID | SCSI_LOW_LUN_FLAGS_QUIRKS_VALID) 295 296 u_int li_flags; /* real lun control flags */ 297 u_int li_cfgflags; /* lun control flags given by user */ 298 u_int li_diskflags; /* lun control flags given by hardware info */ 299 u_int li_quirks; /* lun control flags given by upper layer */ 300 301 /* inq buffer */ 302 struct scsi_low_inq_data { 303 u_int8_t sd_type; 304 u_int8_t sd_sp1; 305 u_int8_t sd_version; 306 u_int8_t sd_resp; 307 u_int8_t sd_len; 308 u_int8_t sd_sp2[2]; 309 u_int8_t sd_support; 310 } __packed li_inq; 311 312 /* modeq buffer */ 313 struct scsi_low_mode_sense_data { 314 u_int8_t sms_header[4]; 315 struct { 316 u_int8_t cmp_page; 317 u_int8_t cmp_length; 318 u_int8_t cmp_rlec; 319 u_int8_t cmp_qc; 320 u_int8_t cmp_eca; 321 u_int8_t cmp_spare[3]; 322 } __packed sms_cmp; 323 324 } li_sms; 325 }; 326 327 struct scsi_low_msg_log { 328 int slml_ptr; 329 struct { 330 u_int8_t msg[2]; 331 } slml_msg[SCSI_LOW_MSG_LOG_DATALEN]; 332 }; 333 334 struct targ_info { 335 TAILQ_ENTRY(targ_info) ti_chain; /* targ_info link */ 336 337 struct scsi_low_softc *ti_sc; /* our softc */ 338 u_int ti_id; /* scsi id */ 339 340 /* 341 * Lun chain 342 */ 343 struct lun_info_tab ti_litab; /* lun chain */ 344 345 /* 346 * total disconnected nexus 347 */ 348 int ti_disc; 349 350 /* 351 * Scsi phase control 352 */ 353 354 #define PH_NULL 0x00 355 #define PH_ARBSTART 0x01 356 #define PH_SELSTART 0x02 357 #define PH_SELECTED 0x03 358 #define PH_CMD 0x04 359 #define PH_DATA 0x05 360 #define PH_MSGIN 0x06 361 #define PH_MSGOUT 0x07 362 #define PH_STAT 0x08 363 #define PH_DISC 0x09 364 #define PH_RESEL 0x0a 365 u_int ti_phase; /* scsi phase */ 366 u_int ti_ophase; /* old scsi phase */ 367 368 /* 369 * Msg in 370 */ 371 u_int ti_msginptr; /* msgin ptr */ 372 u_int ti_msginlen; /* expected msg length */ 373 int ti_msgin_parity_error; /* parity error detected */ 374 u_int8_t ti_msgin[SCSI_LOW_MAX_MSGLEN]; /* msgin buffer */ 375 376 /* 377 * Msg out 378 */ 379 u_int ti_msgflags; /* msgs to be asserted */ 380 u_int ti_omsgflags; /* msgs asserted */ 381 u_int ti_emsgflags; /* a msg currently asserted */ 382 #define SCSI_LOW_MSG_RESET 0x00000001 383 #define SCSI_LOW_MSG_REJECT 0x00000002 384 #define SCSI_LOW_MSG_PARITY 0x00000004 385 #define SCSI_LOW_MSG_ERROR 0x00000008 386 #define SCSI_LOW_MSG_IDENTIFY 0x00000010 387 #define SCSI_LOW_MSG_ABORT 0x00000020 388 #define SCSI_LOW_MSG_TERMIO 0x00000040 389 #define SCSI_LOW_MSG_SIMPLE_QTAG 0x00000080 390 #define SCSI_LOW_MSG_ORDERED_QTAG 0x00000100 391 #define SCSI_LOW_MSG_HEAD_QTAG 0x00000200 392 #define SCSI_LOW_MSG_ABORT_QTAG 0x00000400 393 #define SCSI_LOW_MSG_CLEAR_QTAG 0x00000800 394 #define SCSI_LOW_MSG_WIDE 0x00001000 395 #define SCSI_LOW_MSG_SYNCH 0x00002000 396 #define SCSI_LOW_MSG_NOOP 0x00004000 397 #define SCSI_LOW_MSG_LAST 0x00008000 398 #define SCSI_LOW_MSG_ALL 0xffffffff 399 400 /* msgout buffer */ 401 u_int8_t ti_msgoutstr[SCSI_LOW_MAX_MSGLEN]; /* scsi msgout */ 402 u_int ti_msgoutlen; /* msgout strlen */ 403 404 /* 405 * target initialize msgout 406 */ 407 u_int ti_setup_msg; /* setup msgout requests */ 408 u_int ti_setup_msg_done; 409 410 /* 411 * synch and wide data info 412 */ 413 u_int ti_flags_valid; /* valid flags */ 414 #define SCSI_LOW_TARG_FLAGS_USER_VALID 0x0001 415 #define SCSI_LOW_TARG_FLAGS_DISK_VALID 0x0002 416 #define SCSI_LOW_TARG_FLAGS_QUIRKS_VALID 0x0004 417 #define SCSI_LOW_TARG_FLAGS_ALL_VALID \ 418 (SCSI_LOW_TARG_FLAGS_USER_VALID | \ 419 SCSI_LOW_TARG_FLAGS_DISK_VALID | SCSI_LOW_TARG_FLAGS_QUIRKS_VALID) 420 421 u_int ti_diskflags; /* given target disk flags */ 422 u_int ti_quirks; /* given target quirk */ 423 424 struct synch { 425 u_int8_t offset; 426 u_int8_t period; 427 } ti_osynch, ti_maxsynch; /* synch data */ 428 429 #define SCSI_LOW_BUS_WIDTH_8 0 430 #define SCSI_LOW_BUS_WIDTH_16 1 431 #define SCSI_LOW_BUS_WIDTH_32 2 432 u_int ti_owidth, ti_width; 433 434 /* 435 * lun info size. 436 */ 437 int ti_lunsize; 438 439 #ifdef SCSI_LOW_DIAGNOSTIC 440 struct scsi_low_msg_log ti_log_msgout; 441 struct scsi_low_msg_log ti_log_msgin; 442 #endif /* SCSI_LOW_DIAGNOSTIC */ 443 }; 444 445 /************************************************* 446 * COMMON HEADER STRUCTURE 447 *************************************************/ 448 struct scsi_low_softc; 449 struct proc; 450 typedef struct scsi_low_softc *sc_low_t; 451 452 #define SCSI_LOW_START_OK 0 453 #define SCSI_LOW_START_FAIL 1 454 #define SCSI_LOW_INFO_ALLOC 0 455 #define SCSI_LOW_INFO_REVOKE 1 456 #define SCSI_LOW_INFO_DEALLOC 2 457 #define SCSI_LOW_POWDOWN 1 458 #define SCSI_LOW_ENGAGE 2 459 460 #define SC_LOW_INIT_T (int (*)(sc_low_t, int)) 461 #define SC_LOW_BUSRST_T (void (*)(sc_low_t)) 462 #define SC_LOW_TARG_INIT_T (int (*)(sc_low_t, struct targ_info *, int)) 463 #define SC_LOW_LUN_INIT_T (int (*)(sc_low_t, struct targ_info *, struct lun_info *, int)) 464 #define SC_LOW_SELECT_T (int (*)(sc_low_t, struct slccb *)) 465 #define SC_LOW_ATTEN_T (void (*)(sc_low_t)) 466 #define SC_LOW_NEXUS_T (int (*)(sc_low_t)) 467 #define SC_LOW_MSG_T (int (*)(sc_low_t, struct targ_info *, u_int)) 468 #define SC_LOW_POLL_T (int (*)(void *)) 469 #define SC_LOW_POWER_T (int (*)(sc_low_t, u_int)) 470 #define SC_LOW_TIMEOUT_T (int (*)(sc_low_t)) 471 472 struct scsi_low_funcs { 473 int (*scsi_low_init)(sc_low_t, int); 474 void (*scsi_low_bus_reset)(sc_low_t); 475 int (*scsi_low_targ_init)(sc_low_t, struct targ_info *, int); 476 int (*scsi_low_lun_init)(sc_low_t, struct targ_info *, struct lun_info *, int); 477 int (*scsi_low_start_bus)(sc_low_t, struct slccb *); 478 int (*scsi_low_establish_lun_nexus)(sc_low_t); 479 int (*scsi_low_establish_ccb_nexus)(sc_low_t); 480 void (*scsi_low_attention)(sc_low_t); 481 int (*scsi_low_msg)(sc_low_t, struct targ_info *, u_int); 482 int (*scsi_low_timeout)(sc_low_t); 483 int (*scsi_low_poll)(void *); 484 int (*scsi_low_power)(sc_low_t, u_int); 485 int (*scsi_low_ioctl)(sc_low_t, u_long, caddr_t, int, struct proc *); 486 }; 487 488 struct scsi_low_softc { 489 /* os depend structure */ 490 struct scsi_low_osdep_interface sl_si; 491 #define sl_dev sl_si.si_dev 492 struct scsi_low_osdep_funcs *sl_osdep_fp; 493 494 /* our chain */ 495 LIST_ENTRY(scsi_low_softc) sl_chain; 496 497 /* my targets */ 498 struct targ_info *sl_ti[SCSI_LOW_NTARGETS]; 499 struct targ_info_tab sl_titab; 500 501 /* current active T_L_Q nexus */ 502 struct targ_info *sl_Tnexus; /* Target nexus */ 503 struct lun_info *sl_Lnexus; /* Lun nexus */ 504 struct slccb *sl_Qnexus; /* Qtag nexus */ 505 int sl_nexus_call; 506 507 /* ccb start queue */ 508 struct slccbtab sl_start; 509 510 /* retry limit and phase change counter */ 511 int sl_max_retry; 512 int sl_ph_count; 513 int sl_timeout_count; 514 515 /* selection & total num disconnect targets */ 516 int sl_nio; 517 int sl_disc; 518 int sl_retry_sel; 519 struct slccb *sl_selid; 520 521 /* attention */ 522 int sl_atten; /* ATN asserted */ 523 int sl_clear_atten; /* negate ATN required */ 524 525 /* scsi phase suggested by scsi msg */ 526 u_int sl_msgphase; 527 #define MSGPH_NULL 0x00 /* no msg */ 528 #define MSGPH_DISC 0x01 /* disconnect msg */ 529 #define MSGPH_CMDC 0x02 /* cmd complete msg */ 530 #define MSGPH_ABORT 0x03 /* abort seq */ 531 #define MSGPH_TERM 0x04 /* current io terminate */ 532 #define MSGPH_LCTERM 0x05 /* cmd link terminated */ 533 #define MSGPH_RESET 0x06 /* reset target */ 534 535 /* error */ 536 u_int sl_error; /* error flags */ 537 #define FATALIO 0x0001 /* generic io error & retry io */ 538 #define ABORTIO 0x0002 /* generic io error & terminate io */ 539 #define TIMEOUTIO 0x0004 /* watch dog timeout */ 540 #define SELTIMEOUTIO 0x0008 /* selection timeout */ 541 #define PDMAERR 0x0010 /* dma xfer error */ 542 #define MSGERR 0x0020 /* msgsys error */ 543 #define PARITYERR 0x0040 /* parity error */ 544 #define BUSYERR 0x0080 /* target busy error */ 545 #define STATERR 0x0100 /* status error */ 546 #define UACAERR 0x0200 /* target CA state, no sense check */ 547 #define SENSEIO 0x1000 /* cmd not excuted but sense data ok */ 548 #define SENSEERR 0x2000 /* cmd not excuted and sense data bad */ 549 #define UBFERR 0x4000 /* unexpected bus free */ 550 #define PENDINGIO 0x8000 /* ccb start not yet */ 551 #define SCSI_LOW_ERRORBITS "\020\017ubferr\016senseerr\015senseio\012uacaerr\011staterr\010busy\007parity\006msgerr\005pdmaerr\004seltimeout\003timeout\002abort\001fatal" 552 553 /* current scsi data pointer */ 554 struct sc_p sl_scp; 555 556 /* power control */ 557 u_int sl_active; /* host is busy state */ 558 int sl_powc; /* power down timer counter */ 559 u_int sl_rstep; /* resume step */ 560 561 /* configuration flags */ 562 u_int sl_flags; 563 #define HW_POWDOWN 0x0001 564 #define HW_RESUME 0x0002 565 #define HW_PDMASTART 0x0004 566 #define HW_INACTIVE 0x0008 567 #define HW_POWERCTRL 0x0010 568 #define HW_INITIALIZING 0x0020 569 #define HW_READ_PADDING 0x1000 570 #define HW_WRITE_PADDING 0x2000 571 572 u_int sl_cfgflags; 573 #define CFG_NODISC 0x0001 574 #define CFG_NOPARITY 0x0002 575 #define CFG_NOATTEN 0x0004 576 #define CFG_ASYNC 0x0008 577 #define CFG_NOQTAG 0x0010 578 579 int sl_show_result; 580 #define SHOW_SYNCH_NEG 0x0001 581 #define SHOW_WIDE_NEG 0x0002 582 #define SHOW_CALCF_RES 0x0010 583 #define SHOW_PROBE_RES 0x0020 584 #define SHOW_ALL_NEG -1 585 586 /* host informations */ 587 u_int sl_hostid; 588 int sl_nluns; 589 int sl_ntargs; 590 int sl_openings; 591 592 /* interface functions */ 593 struct scsi_low_funcs *sl_funcs; 594 595 /* targinfo size */ 596 int sl_targsize; 597 }; 598 599 /************************************************* 600 * SCSI LOW service functions 601 *************************************************/ 602 /* 603 * Scsi low attachment function. 604 */ 605 int scsi_low_attach(struct scsi_low_softc *, int, int, int, int, int); 606 int scsi_low_dettach(struct scsi_low_softc *); 607 608 /* 609 * Scsi low interface activate or deactivate functions 610 */ 611 int scsi_low_is_busy(struct scsi_low_softc *); 612 int scsi_low_activate(struct scsi_low_softc *); 613 int scsi_low_deactivate(struct scsi_low_softc *); 614 615 /* 616 * Scsi phase "bus service" functions. 617 * These functions are corresponding to each scsi bus phaeses. 618 */ 619 /* bus idle phase (other initiators or targets release bus) */ 620 void scsi_low_bus_idle(struct scsi_low_softc *); 621 622 /* arbitration and selection phase */ 623 void scsi_low_arbit_fail(struct scsi_low_softc *, struct slccb *); 624 static __inline void scsi_low_arbit_win(struct scsi_low_softc *); 625 626 /* msgout phase */ 627 #define SCSI_LOW_MSGOUT_INIT 0x00000001 628 #define SCSI_LOW_MSGOUT_UNIFY 0x00000002 629 int scsi_low_msgout(struct scsi_low_softc *, struct targ_info *, u_int); 630 631 /* msgin phase */ 632 #define SCSI_LOW_DATA_PE 0x80000000 633 int scsi_low_msgin(struct scsi_low_softc *, struct targ_info *, u_int); 634 635 /* statusin phase */ 636 static __inline int scsi_low_statusin(struct scsi_low_softc *, struct targ_info *, u_int); 637 638 /* data phase */ 639 int scsi_low_data(struct scsi_low_softc *, struct targ_info *, struct buf **, int); 640 static __inline void scsi_low_data_finish(struct scsi_low_softc *); 641 642 /* cmd phase */ 643 int scsi_low_cmd(struct scsi_low_softc *, struct targ_info *); 644 645 /* reselection phase */ 646 struct targ_info *scsi_low_reselected(struct scsi_low_softc *, u_int); 647 648 /* disconnection phase */ 649 int scsi_low_disconnected(struct scsi_low_softc *, struct targ_info *); 650 651 /* 652 * Scsi bus restart function. 653 * Canncel all established nexuses => scsi system initialized => restart jobs. 654 */ 655 #define SCSI_LOW_RESTART_HARD 1 656 #define SCSI_LOW_RESTART_SOFT 0 657 int scsi_low_restart(struct scsi_low_softc *, int, u_char *); 658 659 /* 660 * Scsi utility fucntions 661 */ 662 /* print current status */ 663 void scsi_low_print(struct scsi_low_softc *, struct targ_info *); 664 665 /* bus reset utility */ 666 void scsi_low_bus_reset(struct scsi_low_softc *); 667 668 /************************************************* 669 * Message macro defs 670 *************************************************/ 671 #define SCSI_LOW_SETUP_PHASE(ti, phase) \ 672 { \ 673 (ti)->ti_ophase = ti->ti_phase; \ 674 (ti)->ti_phase = (phase); \ 675 } 676 677 #define SCSI_LOW_SETUP_MSGPHASE(slp, PHASE) \ 678 { \ 679 (slp)->sl_msgphase = (PHASE); \ 680 } 681 682 #define SCSI_LOW_ASSERT_ATN(slp) \ 683 { \ 684 (slp)->sl_atten = 1; \ 685 } 686 687 #define SCSI_LOW_DEASSERT_ATN(slp) \ 688 { \ 689 (slp)->sl_atten = 0; \ 690 } 691 692 /************************************************* 693 * Inline functions 694 *************************************************/ 695 static __inline void scsi_low_attention(struct scsi_low_softc *); 696 static __inline int scsi_low_is_msgout_continue(struct targ_info *, u_int); 697 static __inline int scsi_low_assert_msg(struct scsi_low_softc *, struct targ_info *, u_int, int); 698 static __inline int scsi_low_is_disconnect_ok(struct slccb *); 699 700 static __inline int 701 scsi_low_is_msgout_continue(ti, mask) 702 struct targ_info *ti; 703 u_int mask; 704 { 705 706 return ((ti->ti_msgflags & (~mask)) != 0); 707 } 708 709 static __inline int 710 scsi_low_is_disconnect_ok(cb) 711 struct slccb *cb; 712 { 713 714 return ((cb->li->li_flags & SCSI_LOW_DISC) != 0 && 715 (cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) == 0); 716 } 717 718 static __inline void 719 scsi_low_attention(slp) 720 struct scsi_low_softc *slp; 721 { 722 723 if (slp->sl_atten != 0) 724 return; 725 726 (*slp->sl_funcs->scsi_low_attention) (slp); 727 SCSI_LOW_ASSERT_ATN(slp); 728 } 729 730 static __inline int 731 scsi_low_assert_msg(slp, ti, msg, now) 732 struct scsi_low_softc *slp; 733 struct targ_info *ti; 734 u_int msg; 735 int now; 736 { 737 738 ti->ti_msgflags |= msg; 739 if (now != 0) 740 scsi_low_attention(slp); 741 return 0; 742 } 743 744 static __inline void 745 scsi_low_arbit_win(slp) 746 struct scsi_low_softc *slp; 747 { 748 749 slp->sl_selid = NULL; 750 } 751 752 static __inline void 753 scsi_low_data_finish(slp) 754 struct scsi_low_softc *slp; 755 { 756 757 if (slp->sl_Qnexus != NULL) 758 { 759 slp->sl_Qnexus->ccb_datalen = slp->sl_scp.scp_datalen; 760 } 761 } 762 763 static __inline int 764 scsi_low_statusin(slp, ti, c) 765 struct scsi_low_softc *slp; 766 struct targ_info *ti; 767 u_int c; 768 { 769 770 slp->sl_ph_count ++; 771 if ((c & SCSI_LOW_DATA_PE) != 0) 772 { 773 scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ERROR, 0); 774 return EIO; 775 } 776 slp->sl_scp.scp_status = (u_int8_t) c; 777 return 0; 778 } 779 780 /************************************************* 781 * Message out defs 782 *************************************************/ 783 /* XXX: use scsi_message.h */ 784 #define ST_GOOD 0x00 785 #define ST_CHKCOND 0x02 786 #define ST_MET 0x04 787 #define ST_BUSY 0x08 788 #define ST_INTERGOOD 0x10 789 #define ST_INTERMET 0x14 790 #define ST_CONFLICT 0x18 791 #define ST_CMDTERM 0x22 792 #define ST_QUEFULL 0x28 793 #define ST_UNKNOWN 0xff 794 795 #define MSG_COMP 0x00 796 #define MSG_EXTEND 0x01 797 798 #define MKMSG_EXTEND(XLEN, XCODE) ((((u_int)(XLEN)) << NBBY) | ((u_int)(XCODE))) 799 #define MSG_EXTEND_MDPCODE 0x00 800 #define MSG_EXTEND_MDPLEN 0x05 801 #define MSG_EXTEND_SYNCHCODE 0x01 802 #define MSG_EXTEND_SYNCHLEN 0x03 803 #define MSG_EXTEND_WIDECODE 0x03 804 #define MSG_EXTEND_WIDELEN 0x02 805 806 #define MSG_SAVESP 0x02 807 #define MSG_RESTORESP 0x03 808 #define MSG_DISCON 0x04 809 #define MSG_I_ERROR 0x05 810 #define MSG_ABORT 0x06 811 #define MSG_REJECT 0x07 812 #define MSG_NOOP 0x08 813 #define MSG_PARITY 0x09 814 #define MSG_LCOMP 0x0a 815 #define MSG_LCOMP_F 0x0b 816 #define MSG_RESET 0x0c 817 #define MSG_ABORT_QTAG 0x0d 818 #define MSG_CLEAR_QTAG 0x0e 819 #define MSG_TERM_IO 0x11 820 #define MSG_SIMPLE_QTAG 0x20 821 #define MSG_HEAD_QTAG 0x21 822 #define MSG_ORDERED_QTAG 0x22 823 #define MSG_IDENTIFY 0x80 824 #define MSG_IDENTIFY_DISCPRIV 0x40 825 #endif /* !_SCSI_LOW_H_ */
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