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sys/dev/ic/aic79xxvar.h
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1 /* 2 * Core definitions and data structures shareable across OS platforms. 3 * 4 * Copyright (c) 1994-2002 Justin T. Gibbs. 5 * Copyright (c) 2000-2002 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.h#94 $ 41 * 42 * $FreeBSD: src/sys/dev/aic7xxx/aic79xx.h,v 1.15 2003/06/28 04:45:25 gibbs Exp $ 43 */ 44 /* 45 * Ported from FreeBSD by Pascal Renauld, Network Storage Solutions, Inc. - April 2003 46 */ 47 48 #ifndef _AIC79XXVAR_H_ 49 #define _AIC79XXVAR_H_ 50 51 /* Register Definitions */ 52 #include <dev/microcode/aic7xxx/aic79xx_reg.h> 53 54 /************************* Forward Declarations *******************************/ 55 struct ahd_platform_data; 56 struct scb_platform_data; 57 58 /****************************** Useful Macros *********************************/ 59 #ifndef MAX 60 #define MAX(a,b) (((a) > (b)) ? (a) : (b)) 61 #endif 62 63 #ifndef MIN 64 #define MIN(a,b) (((a) < (b)) ? (a) : (b)) 65 #endif 66 67 #ifndef TRUE 68 #define TRUE 1 69 #endif 70 #ifndef FALSE 71 #define FALSE 0 72 #endif 73 74 #define NUM_ELEMENTS(array) (sizeof(array) / sizeof(*array)) 75 76 #define ALL_CHANNELS '\0' 77 #define ALL_TARGETS_MASK 0xFFFF 78 #define INITIATOR_WILDCARD (~0) 79 #define SCB_LIST_NULL 0xFF00 80 #define SCB_LIST_NULL_LE (ahd_htole16(SCB_LIST_NULL)) 81 #define QOUTFIFO_ENTRY_VALID 0x8000 82 #define QOUTFIFO_ENTRY_VALID_LE (ahd_htole16(0x8000)) 83 #define SCBID_IS_NULL(scbid) (((scbid) & 0xFF00 ) == SCB_LIST_NULL) 84 85 #define SCSIID_TARGET(ahd, scsiid) \ 86 (((scsiid) & TID) >> TID_SHIFT) 87 #define SCSIID_OUR_ID(scsiid) \ 88 ((scsiid) & OID) 89 #define SCSIID_CHANNEL(ahd, scsiid) ('A') 90 #define SCB_IS_SCSIBUS_B(ahd, scb) (0) 91 #define SCB_GET_OUR_ID(scb) \ 92 SCSIID_OUR_ID((scb)->hscb->scsiid) 93 #define SCB_GET_TARGET(ahd, scb) \ 94 SCSIID_TARGET((ahd), (scb)->hscb->scsiid) 95 #define SCB_GET_CHANNEL(ahd, scb) \ 96 SCSIID_CHANNEL(ahd, (scb)->hscb->scsiid) 97 #define SCB_GET_LUN(scb) \ 98 ((scb)->hscb->lun) 99 #define SCB_GET_TARGET_OFFSET(ahd, scb) \ 100 SCB_GET_TARGET(ahd, scb) 101 #define SCB_GET_TARGET_MASK(ahd, scb) \ 102 (0x01 << (SCB_GET_TARGET_OFFSET(ahd, scb))) 103 #ifdef AHD_DEBUG 104 #define SCB_IS_SILENT(scb) \ 105 ((ahd_debug & AHD_SHOW_MASKED_ERRORS) == 0 \ 106 && (((scb)->flags & SCB_SILENT) != 0)) 107 #else 108 #define SCB_IS_SILENT(scb) \ 109 (((scb)->flags & SCB_SILENT) != 0) 110 #endif 111 /* 112 * TCLs have the following format: TTTTLLLLLLLL 113 */ 114 #define TCL_TARGET_OFFSET(tcl) \ 115 ((((tcl) >> 4) & TID) >> 4) 116 #define TCL_LUN(tcl) \ 117 (tcl & (AHD_NUM_LUNS - 1)) 118 #define BUILD_TCL(scsiid, lun) \ 119 ((lun) | (((scsiid) & TID) << 4)) 120 #define BUILD_TCL_RAW(target, channel, lun) \ 121 ((lun) | ((target) << 8)) 122 123 #define SCB_GET_TAG(scb) \ 124 ahd_le16toh(scb->hscb->tag) 125 126 #ifndef AHD_TARGET_MODE 127 #undef AHD_TMODE_ENABLE 128 #define AHD_TMODE_ENABLE 0 129 #endif 130 131 #define AHD_BUILD_COL_IDX(target, lun) \ 132 (((lun) << 4) | target) 133 134 #define AHD_GET_SCB_COL_IDX(ahd, scb) \ 135 ((SCB_GET_LUN(scb) << 4) | SCB_GET_TARGET(ahd, scb)) 136 137 #define AHD_SET_SCB_COL_IDX(scb, col_idx) \ 138 do { \ 139 (scb)->hscb->scsiid = ((col_idx) << TID_SHIFT) & TID; \ 140 (scb)->hscb->lun = ((col_idx) >> 4) & (AHD_NUM_LUNS_NONPKT-1); \ 141 } while (0) 142 143 #define AHD_COPY_SCB_COL_IDX(dst, src) \ 144 do { \ 145 dst->hscb->scsiid = src->hscb->scsiid; \ 146 dst->hscb->lun = src->hscb->lun; \ 147 } while (0) 148 149 #define AHD_NEVER_COL_IDX 0xFFFF 150 151 /**************************** Driver Constants ********************************/ 152 /* 153 * The maximum number of supported targets. 154 */ 155 #define AHD_NUM_TARGETS 16 156 157 /* 158 * The maximum number of supported luns. 159 * The identify message only supports 64 luns in non-packetized transfers. 160 * You can have 2^64 luns when information unit transfers are enabled, 161 * but until we see a need to support that many, we support 256. 162 */ 163 #define AHD_NUM_LUNS_NONPKT 64 164 #define AHD_NUM_LUNS 256 165 166 /* 167 * The maximum transfer per S/G segment. 168 * Limited by MAXPHYS or a 24bit counter. 169 */ 170 #define AHD_MAXTRANSFER_SIZE MIN(MAXPHYS,0x00ffffff) 171 172 /* 173 * The maximum amount of SCB storage in hardware on a controller. 174 * This value represents an upper bound. Due to software design, 175 * we may not be able to use this number. 176 */ 177 #define AHD_SCB_MAX 512 178 179 /* 180 * The maximum number of concurrent transactions supported per driver instance. 181 * Sequencer Control Blocks (SCBs) store per-transaction information. 182 */ 183 #define AHD_MAX_QUEUE AHD_SCB_MAX 184 185 /* 186 * Define the size of our QIN and QOUT FIFOs. They must be a power of 2 187 * in size and accommodate as many transactions as can be queued concurrently. 188 */ 189 #define AHD_QIN_SIZE AHD_MAX_QUEUE 190 #define AHD_QOUT_SIZE AHD_MAX_QUEUE 191 192 #define AHD_QIN_WRAP(x) ((x) & (AHD_QIN_SIZE-1)) 193 /* 194 * The maximum amount of SCB storage we allocate in host memory. 195 */ 196 #define AHD_SCB_MAX_ALLOC AHD_MAX_QUEUE 197 198 /* 199 * Ring Buffer of incoming target commands. 200 * We allocate 256 to simplify the logic in the sequencer 201 * by using the natural wrap point of an 8bit counter. 202 */ 203 #define AHD_TMODE_CMDS 256 204 205 /* Reset line assertion time in us */ 206 #define AHD_BUSRESET_DELAY 25 207 208 /******************* Chip Characteristics/Operating Settings *****************/ 209 /* 210 * Chip Type 211 * The chip order is from least sophisticated to most sophisticated. 212 */ 213 typedef enum { 214 AHD_NONE = 0x0000, 215 AHD_CHIPID_MASK = 0x00FF, 216 AHD_AIC7901 = 0x0001, 217 AHD_AIC7902 = 0x0002, 218 AHD_AIC7901A = 0x0003, 219 AHD_PCI = 0x0100, /* Bus type PCI */ 220 AHD_PCIX = 0x0200, /* Bus type PCIX */ 221 AHD_BUS_MASK = 0x0F00 222 } ahd_chip; 223 224 /* 225 * Features available in each chip type. 226 */ 227 typedef enum { 228 AHD_FENONE = 0x00000, 229 AHD_WIDE = 0x00001,/* Wide Channel */ 230 AHD_MULTI_FUNC = 0x00100,/* Multi-Function/Channel Device */ 231 AHD_TARGETMODE = 0x01000,/* Has tested target mode support */ 232 AHD_MULTIROLE = 0x02000,/* Space for two roles at a time */ 233 AHD_RTI = 0x04000,/* Retained Training Support */ 234 AHD_NEW_IOCELL_OPTS = 0x08000,/* More Signal knobs in the IOCELL */ 235 AHD_NEW_DFCNTRL_OPTS = 0x10000,/* SCSIENWRDIS bit */ 236 AHD_REMOVABLE = 0x00000,/* Hot-Swap supported - None so far*/ 237 AHD_AIC7901_FE = AHD_FENONE, 238 AHD_AIC7901A_FE = AHD_FENONE, 239 AHD_AIC7902_FE = AHD_MULTI_FUNC 240 } ahd_feature; 241 242 /* 243 * Bugs in the silicon that we work around in software. 244 */ 245 typedef enum { 246 AHD_BUGNONE = 0x0000, 247 /* 248 * Rev A hardware fails to update LAST/CURR/NEXTSCB 249 * correctly in certain packetized selection cases. 250 */ 251 AHD_SENT_SCB_UPDATE_BUG = 0x0001, 252 /* The wrong SCB is accessed to check the abort pending bit. */ 253 AHD_ABORT_LQI_BUG = 0x0002, 254 /* Packetized bitbucket crosses packet boundaries. */ 255 AHD_PKT_BITBUCKET_BUG = 0x0004, 256 /* The selection timer runs twice as long as its setting. */ 257 AHD_LONG_SETIMO_BUG = 0x0008, 258 /* The Non-LQ CRC error status is delayed until phase change. */ 259 AHD_NLQICRC_DELAYED_BUG = 0x0010, 260 /* The chip must be reset for all outgoing bus resets. */ 261 AHD_SCSIRST_BUG = 0x0020, 262 /* Some PCIX fields must be saved and restored across chip reset. */ 263 AHD_PCIX_CHIPRST_BUG = 0x0040, 264 /* MMAPIO is not functional in PCI-X mode. */ 265 AHD_PCIX_MMAPIO_BUG = 0x0080, 266 /* Reads to SCBRAM fail to reset the discard timer. */ 267 AHD_PCIX_SCBRAM_RD_BUG = 0x0100, 268 /* Bug workarounds that can be disabled on non-PCIX busses. */ 269 AHD_PCIX_BUG_MASK = AHD_PCIX_CHIPRST_BUG 270 | AHD_PCIX_MMAPIO_BUG 271 | AHD_PCIX_SCBRAM_RD_BUG, 272 /* 273 * LQOSTOP0 status set even for forced selections with ATN 274 * to perform non-packetized message delivery. 275 */ 276 AHD_LQO_ATNO_BUG = 0x0200, 277 /* FIFO auto-flush does not always trigger. */ 278 AHD_AUTOFLUSH_BUG = 0x0400, 279 /* The CLRLQO registers are not self-clearing. */ 280 AHD_CLRLQO_AUTOCLR_BUG = 0x0800, 281 /* The PACKETIZED status bit refers to the previous connection. */ 282 AHD_PKTIZED_STATUS_BUG = 0x1000, 283 /* "Short Luns" are not placed into outgoing LQ packets correctly. */ 284 AHD_PKT_LUN_BUG = 0x2000, 285 /* 286 * Only the FIFO allocated to the non-packetized connection may 287 * be in use during a non-packetzied connection. 288 */ 289 AHD_NONPACKFIFO_BUG = 0x4000, 290 /* 291 * Writing to a DFF SCBPTR register may fail if concurent with 292 * a hardware write to the other DFF SCBPTR register. This is 293 * not currently a concern in our sequencer since all chips with 294 * this bug have the AHD_NONPACKFIFO_BUG and all writes of concern 295 * occur in non-packetized connections. 296 */ 297 AHD_MDFF_WSCBPTR_BUG = 0x8000, 298 /* SGHADDR updates are slow. */ 299 AHD_REG_SLOW_SETTLE_BUG = 0x10000, 300 /* 301 * Changing the MODE_PTR coincident with an interrupt that 302 * switches to a different mode will cause the interrupt to 303 * be in the mode written outside of interrupt context. 304 */ 305 AHD_SET_MODE_BUG = 0x20000, 306 /* Non-packetized busfree revision does not work. */ 307 AHD_BUSFREEREV_BUG = 0x40000, 308 /* 309 * Paced transfers are indicated with a non-standard PPR 310 * option bit in the neg table, 160MHz is indicated by 311 * sync factor 0x7, and the offset if off by a factor of 2. 312 */ 313 AHD_PACED_NEGTABLE_BUG = 0x80000, 314 /* LQOOVERRUN false positives. */ 315 AHD_LQOOVERRUN_BUG = 0x100000, 316 /* 317 * Controller write to INTSTAT will lose to a host 318 * write to CLRINT. 319 */ 320 AHD_INTCOLLISION_BUG = 0x200000, 321 /* 322 * The GEM318 violates the SCSI spec by not waiting 323 * the mandated bus settle delay between phase changes 324 * in some situations. Some aic79xx chip revs. are more 325 * strict in this regard and will treat REQ assertions 326 * that fall within the bus settle delay window as 327 * glitches. This flag tells the firmware to tolerate 328 * early REQ assertions. 329 */ 330 AHD_EARLY_REQ_BUG = 0x400000, 331 /* 332 * The LED does not stay on long enough in packetized modes. 333 */ 334 AHD_FAINT_LED_BUG = 0x800000 335 } ahd_bug; 336 337 /* 338 * Configuration specific settings. 339 * The driver determines these settings by probing the 340 * chip/controller's configuration. 341 */ 342 typedef enum { 343 AHD_FNONE = 0x00000, 344 AHD_BOOT_CHANNEL = 0x00001,/* We were set as the boot channel. */ 345 AHD_USEDEFAULTS = 0x00004,/* 346 * For cards without an seeprom 347 * or a BIOS to initialize the chip's 348 * SRAM, we use the default target 349 * settings. 350 */ 351 AHD_SEQUENCER_DEBUG = 0x00008, 352 AHD_RESET_BUS_A = 0x00010, 353 AHD_EXTENDED_TRANS_A = 0x00020, 354 AHD_TERM_ENB_A = 0x00040, 355 AHD_SPCHK_ENB_A = 0x00080, 356 AHD_STPWLEVEL_A = 0x00100, 357 AHD_INITIATORROLE = 0x00200,/* 358 * Allow initiator operations on 359 * this controller. 360 */ 361 AHD_TARGETROLE = 0x00400,/* 362 * Allow target operations on this 363 * controller. 364 */ 365 AHD_RESOURCE_SHORTAGE = 0x00800, 366 AHD_TQINFIFO_BLOCKED = 0x01000,/* Blocked waiting for ATIOs */ 367 AHD_INT50_SPEEDFLEX = 0x02000,/* 368 * Internal 50pin connector 369 * sits behind an aic3860 370 */ 371 AHD_BIOS_ENABLED = 0x04000, 372 AHD_ALL_INTERRUPTS = 0x08000, 373 AHD_39BIT_ADDRESSING = 0x10000,/* Use 39 bit addressing scheme. */ 374 AHD_64BIT_ADDRESSING = 0x20000,/* Use 64 bit addressing scheme. */ 375 AHD_CURRENT_SENSING = 0x40000, 376 AHD_SCB_CONFIG_USED = 0x80000,/* No SEEPROM but SCB had info. */ 377 AHD_HP_BOARD = 0x100000, 378 AHD_RESET_POLL_ACTIVE = 0x200000, 379 AHD_UPDATE_PEND_CMDS = 0x400000, 380 AHD_RUNNING_QOUTFIFO = 0x800000, 381 AHD_HAD_FIRST_SEL = 0x1000000 382 } ahd_flag; 383 384 /************************* Hardware SCB Definition ***************************/ 385 386 /* 387 * The driver keeps up to MAX_SCB scb structures per card in memory. The SCB 388 * consists of a "hardware SCB" mirroring the fields available on the card 389 * and additional information the kernel stores for each transaction. 390 * 391 * To minimize space utilization, a portion of the hardware scb stores 392 * different data during different portions of a SCSI transaction. 393 * As initialized by the host driver for the initiator role, this area 394 * contains the SCSI cdb (or a pointer to the cdb) to be executed. After 395 * the cdb has been presented to the target, this area serves to store 396 * residual transfer information and the SCSI status byte. 397 * For the target role, the contents of this area do not change, but 398 * still serve a different purpose than for the initiator role. See 399 * struct target_data for details. 400 */ 401 402 /* 403 * Status information embedded in the shared portion of 404 * an SCB after passing the cdb to the target. The kernel 405 * driver will only read this data for transactions that 406 * complete abnormally. 407 */ 408 struct initiator_status { 409 uint32_t residual_datacnt; /* Residual in the current S/G seg */ 410 uint32_t residual_sgptr; /* The next S/G for this transfer */ 411 uint8_t scsi_status; /* Standard SCSI status byte */ 412 }; 413 414 struct target_status { 415 uint32_t residual_datacnt; /* Residual in the current S/G seg */ 416 uint32_t residual_sgptr; /* The next S/G for this transfer */ 417 uint8_t scsi_status; /* SCSI status to give to initiator */ 418 uint8_t target_phases; /* Bitmap of phases to execute */ 419 uint8_t data_phase; /* Data-In or Data-Out */ 420 uint8_t initiator_tag; /* Initiator's transaction tag */ 421 }; 422 423 /* 424 * Initiator mode SCB shared data area. 425 * If the embedded CDB is 12 bytes or less, we embed 426 * the sense buffer address in the SCB. This allows 427 * us to retrieve sense information without interrupting 428 * the host in packetized mode. 429 */ 430 typedef uint32_t sense_addr_t; 431 #define MAX_CDB_LEN 16 432 #define MAX_CDB_LEN_WITH_SENSE_ADDR (MAX_CDB_LEN - sizeof(sense_addr_t)) 433 union initiator_data { 434 struct { 435 uint64_t cdbptr; 436 uint8_t cdblen; 437 } cdb_from_host; 438 uint8_t cdb[MAX_CDB_LEN]; 439 struct { 440 uint8_t cdb[MAX_CDB_LEN_WITH_SENSE_ADDR]; 441 sense_addr_t sense_addr; 442 } cdb_plus_saddr; 443 }; 444 445 /* 446 * Target mode version of the shared data SCB segment. 447 */ 448 struct target_data { 449 uint32_t spare[2]; 450 uint8_t scsi_status; /* SCSI status to give to initiator */ 451 uint8_t target_phases; /* Bitmap of phases to execute */ 452 uint8_t data_phase; /* Data-In or Data-Out */ 453 uint8_t initiator_tag; /* Initiator's transaction tag */ 454 }; 455 456 struct hardware_scb { 457 /**/ union { 458 union initiator_data idata; 459 struct target_data tdata; 460 struct initiator_status istatus; 461 struct target_status tstatus; 462 } shared_data; 463 /* 464 * A word about residuals. 465 * The scb is presented to the sequencer with the dataptr and datacnt 466 * fields initialized to the contents of the first S/G element to 467 * transfer. The sgptr field is initialized to the bus address for 468 * the S/G element that follows the first in the in core S/G array 469 * or'ed with the SG_FULL_RESID flag. Sgptr may point to an invalid 470 * S/G entry for this transfer (single S/G element transfer with the 471 * first elements address and length preloaded in the dataptr/datacnt 472 * fields). If no transfer is to occur, sgptr is set to SG_LIST_NULL. 473 * The SG_FULL_RESID flag ensures that the residual will be correctly 474 * noted even if no data transfers occur. Once the data phase is entered, 475 * the residual sgptr and datacnt are loaded from the sgptr and the 476 * datacnt fields. After each S/G element's dataptr and length are 477 * loaded into the hardware, the residual sgptr is advanced. After 478 * each S/G element is expired, its datacnt field is checked to see 479 * if the LAST_SEG flag is set. If so, SG_LIST_NULL is set in the 480 * residual sg ptr and the transfer is considered complete. If the 481 * sequencer determines that there is a residual in the transfer, or 482 * there is non-zero status, it will set the SG_STATUS_VALID flag in 483 * sgptr and DMA the scb back into host memory. To summarize: 484 * 485 * Sequencer: 486 * o A residual has occurred if SG_FULL_RESID is set in sgptr, 487 * or residual_sgptr does not have SG_LIST_NULL set. 488 * 489 * o We are transfering the last segment if residual_datacnt has 490 * the SG_LAST_SEG flag set. 491 * 492 * Host: 493 * o A residual can only have occurred if a completed scb has the 494 * SG_STATUS_VALID flag set. Inspection of the SCSI status field, 495 * the residual_datacnt, and the residual_sgptr field will tell 496 * for sure. 497 * 498 * o residual_sgptr and sgptr refer to the "next" sg entry 499 * and so may point beyond the last valid sg entry for the 500 * transfer. 501 */ 502 #define SG_PTR_MASK 0xFFFFFFF8 503 /*16*/ uint16_t tag; /* Reused by Sequencer. */ 504 /*18*/ uint8_t control; /* See SCB_CONTROL in aic79xx.reg for details */ 505 /*19*/ uint8_t scsiid; /* 506 * Selection out Id 507 * Our Id (bits 0-3) Their ID (bits 4-7) 508 */ 509 /*20*/ uint8_t lun; 510 /*21*/ uint8_t task_attribute; 511 /*22*/ uint8_t cdb_len; 512 /*23*/ uint8_t task_management; 513 /*24*/ uint64_t dataptr; 514 /*32*/ uint32_t datacnt; /* Byte 3 is spare. */ 515 /*36*/ uint32_t sgptr; 516 /*40*/ uint32_t hscb_busaddr; 517 /*44*/ uint32_t next_hscb_busaddr; 518 /********** Long lun field only downloaded for full 8 byte lun support ********/ 519 /*48*/ uint8_t pkt_long_lun[8]; 520 /******* Fields below are not Downloaded (Sequencer may use for scratch) ******/ 521 /*56*/ uint8_t spare[8]; 522 }; 523 524 /************************ Kernel SCB Definitions ******************************/ 525 /* 526 * Some fields of the SCB are OS dependent. Here we collect the 527 * definitions for elements that all OS platforms need to include 528 * in there SCB definition. 529 */ 530 531 /* 532 * Definition of a scatter/gather element as transferred to the controller. 533 * The aic7xxx chips only support a 24bit length. We use the top byte of 534 * the length to store additional address bits and a flag to indicate 535 * that a given segment terminates the transfer. This gives us an 536 * addressable range of 512GB on machines with 64bit PCI or with chips 537 * that can support dual address cycles on 32bit PCI busses. 538 */ 539 struct ahd_dma_seg { 540 uint32_t addr; 541 uint32_t len; 542 #define AHD_DMA_LAST_SEG 0x80000000 543 #define AHD_SG_HIGH_ADDR_MASK 0x7F000000 544 #define AHD_SG_LEN_MASK 0x00FFFFFF 545 }; 546 547 struct ahd_dma64_seg { 548 uint64_t addr; 549 uint32_t len; 550 uint32_t pad; 551 }; 552 553 struct map_node { 554 bus_dmamap_t dmamap; 555 bus_addr_t physaddr; 556 uint8_t *vaddr; 557 bus_dma_segment_t dmasegs; 558 int nseg; 559 SLIST_ENTRY(map_node) links; 560 }; 561 562 struct ahd_pci_busdata { 563 pci_chipset_tag_t pc; 564 pcitag_t tag; 565 u_int dev; 566 u_int func; 567 int pcix_off; 568 }; 569 570 /* 571 * The current state of this SCB. 572 */ 573 typedef enum { 574 SCB_FLAG_NONE = 0x00000, 575 SCB_TRANSMISSION_ERROR = 0x00001,/* 576 * We detected a parity or CRC 577 * error that has effected the 578 * payload of the command. This 579 * flag is checked when normal 580 * status is returned to catch 581 * the case of a target not 582 * responding to our attempt 583 * to report the error. 584 */ 585 SCB_OTHERTCL_TIMEOUT = 0x00002,/* 586 * Another device was active 587 * during the first timeout for 588 * this SCB so we gave ourselves 589 * an additional timeout period 590 * in case it was hogging the 591 * bus. 592 */ 593 SCB_DEVICE_RESET = 0x00004, 594 SCB_SENSE = 0x00008, 595 SCB_CDB32_PTR = 0x00010, 596 SCB_RECOVERY_SCB = 0x00020, 597 SCB_AUTO_NEGOTIATE = 0x00040,/* Negotiate to achieve goal. */ 598 SCB_NEGOTIATE = 0x00080,/* Negotiation forced for command. */ 599 SCB_ABORT = 0x00100, 600 SCB_ACTIVE = 0x00200, 601 SCB_TARGET_IMMEDIATE = 0x00400, 602 SCB_PACKETIZED = 0x00800, 603 SCB_EXPECT_PPR_BUSFREE = 0x01000, 604 SCB_PKT_SENSE = 0x02000, 605 SCB_CMDPHASE_ABORT = 0x04000, 606 SCB_ON_COL_LIST = 0x08000, 607 SCB_SILENT = 0x10000,/* 608 * Be quiet about transmission type 609 * errors. They are expected and we 610 * don't want to upset the user. This 611 * flag is typically used during DV. 612 */ 613 SCB_FREEZE_QUEUE = 0x20000, 614 SCB_REQUEUE = 0x40000, 615 } scb_flag; 616 617 struct scb { 618 struct hardware_scb *hscb; 619 union { 620 SLIST_ENTRY(scb) sle; 621 LIST_ENTRY(scb) le; 622 TAILQ_ENTRY(scb) tqe; 623 } links; 624 union { 625 SLIST_ENTRY(scb) sle; 626 LIST_ENTRY(scb) le; 627 TAILQ_ENTRY(scb) tqe; 628 } links2; 629 #define pending_links links2.le 630 #define collision_links links2.le 631 struct scb *col_scb; 632 struct scsipi_xfer *xs; 633 634 struct ahd_softc *ahd_softc; 635 scb_flag flags; 636 bus_dmamap_t dmamap; 637 struct scb_platform_data *platform_data; 638 struct map_node *hscb_map; 639 struct map_node *sg_map; 640 struct map_node *sense_map; 641 void *sg_list; 642 uint8_t *sense_data; 643 bus_addr_t sg_list_busaddr; 644 bus_addr_t sense_busaddr; 645 u_int sg_count;/* How full ahd_dma_seg is */ 646 #define AHD_MAX_LQ_CRC_ERRORS 5 647 u_int crc_retry_count; 648 }; 649 650 TAILQ_HEAD(scb_tailq, scb); 651 LIST_HEAD(scb_list, scb); 652 653 struct scb_data { 654 /* 655 * TAILQ of lists of free SCBs grouped by device 656 * collision domains. 657 */ 658 struct scb_tailq free_scbs; 659 660 /* 661 * Per-device lists of SCBs whose tag ID would collide 662 * with an already active tag on the device. 663 */ 664 struct scb_list free_scb_lists[AHD_NUM_TARGETS * AHD_NUM_LUNS_NONPKT]; 665 666 /* 667 * SCBs that will not collide with any active device. 668 */ 669 struct scb_list any_dev_free_scb_list; 670 671 /* 672 * Mapping from tag to SCB. 673 */ 674 struct scb *scbindex[AHD_SCB_MAX]; 675 676 SLIST_HEAD(, map_node) hscb_maps; 677 SLIST_HEAD(, map_node) sg_maps; 678 SLIST_HEAD(, map_node) sense_maps; 679 680 int scbs_left; /* unallocated scbs in head map_node */ 681 int sgs_left; /* unallocated sgs in head map_node */ 682 int sense_left; /* unallocated sense in head map_node */ 683 uint16_t numscbs; 684 uint16_t maxhscbs; /* Number of SCBs on the card */ 685 uint8_t init_level; /* 686 * How far we've initialized 687 * this structure. 688 */ 689 }; 690 691 /************************ Target Mode Definitions *****************************/ 692 693 /* 694 * Connection desciptor for select-in requests in target mode. 695 */ 696 struct target_cmd { 697 uint8_t scsiid; /* Our ID and the initiator's ID */ 698 uint8_t identify; /* Identify message */ 699 uint8_t bytes[22]; /* 700 * Bytes contains any additional message 701 * bytes terminated by 0xFF. The remainder 702 * is the cdb to execute. 703 */ 704 uint8_t cmd_valid; /* 705 * When a command is complete, the firmware 706 * will set cmd_valid to all bits set. 707 * After the host has seen the command, 708 * the bits are cleared. This allows us 709 * to just peek at host memory to determine 710 * if more work is complete. cmd_valid is on 711 * an 8 byte boundary to simplify setting 712 * it on aic7880 hardware which only has 713 * limited direct access to the DMA FIFO. 714 */ 715 uint8_t pad[7]; 716 }; 717 718 /* 719 * Number of events we can buffer up if we run out 720 * of immediate notify ccbs. 721 */ 722 #define AHD_TMODE_EVENT_BUFFER_SIZE 8 723 struct ahd_tmode_event { 724 uint8_t initiator_id; 725 uint8_t event_type; /* MSG type or EVENT_TYPE_BUS_RESET */ 726 #define EVENT_TYPE_BUS_RESET 0xFF 727 uint8_t event_arg; 728 }; 729 730 /* 731 * Per enabled lun target mode state. 732 * As this state is directly influenced by the host OS'es target mode 733 * environment, we let the OS module define it. Forward declare the 734 * structure here so we can store arrays of them, etc. in OS neutral 735 * data structures. 736 */ 737 #ifdef AHD_TARGET_MODE 738 struct ahd_tmode_lstate { 739 struct cam_path *path; 740 struct ccb_hdr_slist accept_tios; 741 struct ccb_hdr_slist immed_notifies; 742 struct ahd_tmode_event event_buffer[AHD_TMODE_EVENT_BUFFER_SIZE]; 743 uint8_t event_r_idx; 744 uint8_t event_w_idx; 745 }; 746 #else 747 struct ahd_tmode_lstate; 748 #endif 749 750 /******************** Transfer Negotiation Datastructures *********************/ 751 #define AHD_TRANS_CUR 0x01 /* Modify current negotiation status */ 752 #define AHD_TRANS_ACTIVE 0x03 /* Assume this target is on the bus */ 753 #define AHD_TRANS_GOAL 0x04 /* Modify negontiation goal */ 754 #define AHD_TRANS_USER 0x08 /* Modify user negotiation settings */ 755 #define AHD_PERIOD_10MHz 0x19 756 757 #define AHD_WIDTH_UNKNOWN 0xFF 758 #define AHD_PERIOD_UNKNOWN 0xFF 759 #define AHD_OFFSET_UNKNOWN 0xFF 760 #define AHD_PPR_OPTS_UNKNOWN 0xFF 761 762 /* 763 * Transfer Negotiation Information. 764 */ 765 struct ahd_transinfo { 766 uint8_t protocol_version; /* SCSI Revision level */ 767 uint8_t transport_version; /* SPI Revision level */ 768 uint8_t width; /* Bus width */ 769 uint8_t period; /* Sync rate factor */ 770 uint8_t offset; /* Sync offset */ 771 uint8_t ppr_options; /* Parallel Protocol Request options */ 772 }; 773 774 /* 775 * Per-initiator current, goal and user transfer negotiation information. */ 776 struct ahd_initiator_tinfo { 777 struct ahd_transinfo curr; 778 struct ahd_transinfo goal; 779 struct ahd_transinfo user; 780 }; 781 782 /* 783 * Per enabled target ID state. 784 * Pointers to lun target state as well as sync/wide negotiation information 785 * for each initiator<->target mapping. For the initiator role we pretend 786 * that we are the target and the targets are the initiators since the 787 * negotiation is the same regardless of role. 788 */ 789 struct ahd_tmode_tstate { 790 struct ahd_tmode_lstate* enabled_luns[AHD_NUM_LUNS]; 791 struct ahd_initiator_tinfo transinfo[AHD_NUM_TARGETS]; 792 793 /* 794 * Per initiator state bitmasks. 795 */ 796 uint16_t auto_negotiate;/* Auto Negotiation Required */ 797 uint16_t discenable; /* Disconnection allowed */ 798 uint16_t tagenable; /* Tagged Queuing allowed */ 799 }; 800 801 /* 802 * Points of interest along the negotiated transfer scale. 803 */ 804 #define AHD_SYNCRATE_160 0x8 805 #define AHD_SYNCRATE_PACED 0x8 806 #define AHD_SYNCRATE_DT 0x9 807 #define AHD_SYNCRATE_ULTRA2 0xa 808 #define AHD_SYNCRATE_ULTRA 0xc 809 #define AHD_SYNCRATE_FAST 0x19 810 #define AHD_SYNCRATE_MIN_DT AHD_SYNCRATE_FAST 811 #define AHD_SYNCRATE_SYNC 0x32 812 #define AHD_SYNCRATE_MIN 0x60 813 #define AHD_SYNCRATE_ASYNC 0xFF 814 #define AHD_SYNCRATE_MAX AHD_SYNCRATE_160 815 816 /* Safe and valid period for async negotiations. */ 817 #define AHD_ASYNC_XFER_PERIOD 0x44 818 819 /* 820 * In RevA, the synctable uses a 120MHz rate for the period 821 * factor 8 and 160MHz for the period factor 7. The 120MHz 822 * rate never made it into the official SCSI spec, so we must 823 * compensate when setting the negotiation table for Rev A 824 * parts. 825 */ 826 #define AHD_SYNCRATE_REVA_120 0x8 827 #define AHD_SYNCRATE_REVA_160 0x7 828 829 /***************************** Lookup Tables **********************************/ 830 /* 831 * Phase -> name and message out response 832 * to parity errors in each phase table. 833 */ 834 struct ahd_phase_table_entry { 835 uint8_t phase; 836 uint8_t mesg_out; /* Message response to parity errors */ 837 char *phasemsg; 838 }; 839 840 /************************** Serial EEPROM Format ******************************/ 841 842 struct seeprom_config { 843 /* 844 * Per SCSI ID Configuration Flags 845 */ 846 uint16_t device_flags[16]; /* words 0-15 */ 847 #define CFXFER 0x003F /* synchronous transfer rate */ 848 #define CFXFER_ASYNC 0x3F 849 #define CFQAS 0x0040 /* Negotiate QAS */ 850 #define CFPACKETIZED 0x0080 /* Negotiate Packetized Transfers */ 851 #define CFSTART 0x0100 /* send start unit SCSI command */ 852 #define CFINCBIOS 0x0200 /* include in BIOS scan */ 853 #define CFDISC 0x0400 /* enable disconnection */ 854 #define CFMULTILUNDEV 0x0800 /* Probe multiple luns in BIOS scan */ 855 #define CFWIDEB 0x1000 /* wide bus device */ 856 #define CFHOSTMANAGED 0x8000 /* Managed by a RAID controller */ 857 858 /* 859 * BIOS Control Bits 860 */ 861 uint16_t bios_control; /* word 16 */ 862 #define CFSUPREM 0x0001 /* support all removeable drives */ 863 #define CFSUPREMB 0x0002 /* support removeable boot drives */ 864 #define CFBIOSSTATE 0x000C /* BIOS Action State */ 865 #define CFBS_DISABLED 0x00 866 #define CFBS_ENABLED 0x04 867 #define CFBS_DISABLED_SCAN 0x08 868 #define CFENABLEDV 0x0010 /* Perform Domain Validation */ 869 #define CFCTRL_A 0x0020 /* BIOS displays Ctrl-A message */ 870 #define CFSPARITY 0x0040 /* SCSI parity */ 871 #define CFEXTEND 0x0080 /* extended translation enabled */ 872 #define CFBOOTCD 0x0100 /* Support Bootable CD-ROM */ 873 #define CFMSG_LEVEL 0x0600 /* BIOS Message Level */ 874 #define CFMSG_VERBOSE 0x0000 875 #define CFMSG_SILENT 0x0200 876 #define CFMSG_DIAG 0x0400 877 #define CFRESETB 0x0800 /* reset SCSI bus at boot */ 878 /* UNUSED 0xf000 */ 879 880 /* 881 * Host Adapter Control Bits 882 */ 883 uint16_t adapter_control; /* word 17 */ 884 #define CFAUTOTERM 0x0001 /* Perform Auto termination */ 885 #define CFSTERM 0x0002 /* SCSI low byte termination */ 886 #define CFWSTERM 0x0004 /* SCSI high byte termination */ 887 #define CFSEAUTOTERM 0x0008 /* Ultra2 Perform secondary Auto Term*/ 888 #define CFSELOWTERM 0x0010 /* Ultra2 secondary low term */ 889 #define CFSEHIGHTERM 0x0020 /* Ultra2 secondary high term */ 890 #define CFSTPWLEVEL 0x0040 /* Termination level control */ 891 #define CFBIOSAUTOTERM 0x0080 /* Perform Auto termination */ 892 #define CFTERM_MENU 0x0100 /* BIOS displays termination menu */ 893 #define CFCLUSTERENB 0x8000 /* Cluster Enable */ 894 895 /* 896 * Bus Release Time, Host Adapter ID 897 */ 898 uint16_t brtime_id; /* word 18 */ 899 #define CFSCSIID 0x000f /* host adapter SCSI ID */ 900 /* UNUSED 0x00f0 */ 901 #define CFBRTIME 0xff00 /* bus release time/PCI Latency Time */ 902 903 /* 904 * Maximum targets 905 */ 906 uint16_t max_targets; /* word 19 */ 907 #define CFMAXTARG 0x00ff /* maximum targets */ 908 #define CFBOOTLUN 0x0f00 /* Lun to boot from */ 909 #define CFBOOTID 0xf000 /* Target to boot from */ 910 uint16_t res_1[10]; /* words 20-29 */ 911 uint16_t signature; /* BIOS Signature */ 912 #define CFSIGNATURE 0x400 913 uint16_t checksum; /* word 31 */ 914 }; 915 916 /* 917 * Vital Product Data used during POST and by the BIOS. 918 */ 919 struct vpd_config { 920 uint8_t bios_flags; 921 #define VPDMASTERBIOS 0x0001 922 #define VPDBOOTHOST 0x0002 923 uint8_t reserved_1[21]; 924 uint8_t resource_type; 925 uint8_t resource_len[2]; 926 uint8_t resource_data[8]; 927 uint8_t vpd_tag; 928 uint16_t vpd_len; 929 uint8_t vpd_keyword[2]; 930 uint8_t length; 931 uint8_t revision; 932 uint8_t device_flags; 933 uint8_t termnation_menus[2]; 934 uint8_t fifo_threshold; 935 uint8_t end_tag; 936 uint8_t vpd_checksum; 937 uint16_t default_target_flags; 938 uint16_t default_bios_flags; 939 uint16_t default_ctrl_flags; 940 uint8_t default_irq; 941 uint8_t pci_lattime; 942 uint8_t max_target; 943 uint8_t boot_lun; 944 uint16_t signature; 945 uint8_t reserved_2; 946 uint8_t checksum; 947 uint8_t reserved_3[4]; 948 }; 949 950 /****************************** Flexport Logic ********************************/ 951 #define FLXADDR_TERMCTL 0x0 952 #define FLX_TERMCTL_ENSECHIGH 0x8 953 #define FLX_TERMCTL_ENSECLOW 0x4 954 #define FLX_TERMCTL_ENPRIHIGH 0x2 955 #define FLX_TERMCTL_ENPRILOW 0x1 956 #define FLXADDR_ROMSTAT_CURSENSECTL 0x1 957 #define FLX_ROMSTAT_SEECFG 0xF0 958 #define FLX_ROMSTAT_EECFG 0x0F 959 #define FLX_ROMSTAT_SEE_93C66 0x00 960 #define FLX_ROMSTAT_SEE_NONE 0xF0 961 #define FLX_ROMSTAT_EE_512x8 0x0 962 #define FLX_ROMSTAT_EE_1MBx8 0x1 963 #define FLX_ROMSTAT_EE_2MBx8 0x2 964 #define FLX_ROMSTAT_EE_4MBx8 0x3 965 #define FLX_ROMSTAT_EE_16MBx8 0x4 966 #define CURSENSE_ENB 0x1 967 #define FLXADDR_FLEXSTAT 0x2 968 #define FLX_FSTAT_BUSY 0x1 969 #define FLXADDR_CURRENT_STAT 0x4 970 #define FLX_CSTAT_SEC_HIGH 0xC0 971 #define FLX_CSTAT_SEC_LOW 0x30 972 #define FLX_CSTAT_PRI_HIGH 0x0C 973 #define FLX_CSTAT_PRI_LOW 0x03 974 #define FLX_CSTAT_MASK 0x03 975 #define FLX_CSTAT_SHIFT 2 976 #define FLX_CSTAT_OKAY 0x0 977 #define FLX_CSTAT_OVER 0x1 978 #define FLX_CSTAT_UNDER 0x2 979 #define FLX_CSTAT_INVALID 0x3 980 981 int ahd_read_seeprom(struct ahd_softc *, uint16_t *, u_int, u_int, 982 int); 983 984 int ahd_write_seeprom(struct ahd_softc *, uint16_t *, u_int, u_int); 985 int ahd_wait_seeprom(struct ahd_softc *); 986 int ahd_verify_vpd_cksum(struct vpd_config *); 987 int ahd_verify_cksum(struct seeprom_config *); 988 int ahd_acquire_seeprom(struct ahd_softc *); 989 void ahd_release_seeprom(struct ahd_softc *); 990 991 /**************************** Message Buffer *********************************/ 992 typedef enum { 993 MSG_FLAG_NONE = 0x00, 994 MSG_FLAG_EXPECT_PPR_BUSFREE = 0x01, 995 MSG_FLAG_IU_REQ_CHANGED = 0x02, 996 MSG_FLAG_EXPECT_IDE_BUSFREE = 0x04, 997 MSG_FLAG_EXPECT_QASREJ_BUSFREE = 0x08, 998 MSG_FLAG_PACKETIZED = 0x10 999 } ahd_msg_flags; 1000 1001 typedef enum { 1002 MSG_TYPE_NONE = 0x00, 1003 MSG_TYPE_INITIATOR_MSGOUT = 0x01, 1004 MSG_TYPE_INITIATOR_MSGIN = 0x02, 1005 MSG_TYPE_TARGET_MSGOUT = 0x03, 1006 MSG_TYPE_TARGET_MSGIN = 0x04 1007 } ahd_msg_type; 1008 1009 typedef enum { 1010 MSGLOOP_IN_PROG, 1011 MSGLOOP_MSGCOMPLETE, 1012 MSGLOOP_TERMINATED 1013 } msg_loop_stat; 1014 1015 /*********************** Software Configuration Structure *********************/ 1016 struct ahd_suspend_channel_state { 1017 uint8_t scsiseq; 1018 uint8_t sxfrctl0; 1019 uint8_t sxfrctl1; 1020 uint8_t simode0; 1021 uint8_t simode1; 1022 uint8_t seltimer; 1023 uint8_t seqctl; 1024 }; 1025 1026 struct ahd_suspend_state { 1027 struct ahd_suspend_channel_state channel[2]; 1028 uint8_t optionmode; 1029 uint8_t dscommand0; 1030 uint8_t dspcistatus; 1031 /* hsmailbox */ 1032 uint8_t crccontrol1; 1033 uint8_t scbbaddr; 1034 /* Host and sequencer SCB counts */ 1035 uint8_t dff_thrsh; 1036 uint8_t *scratch_ram; 1037 uint8_t *btt; 1038 }; 1039 1040 typedef int (*ahd_bus_intr_t)(struct ahd_softc *); 1041 1042 typedef enum { 1043 AHD_MODE_DFF0, 1044 AHD_MODE_DFF1, 1045 AHD_MODE_CCHAN, 1046 AHD_MODE_SCSI, 1047 AHD_MODE_CFG, 1048 AHD_MODE_UNKNOWN 1049 } ahd_mode; 1050 1051 #define AHD_MK_MSK(x) (0x01 << (x)) 1052 #define AHD_MODE_DFF0_MSK AHD_MK_MSK(AHD_MODE_DFF0) 1053 #define AHD_MODE_DFF1_MSK AHD_MK_MSK(AHD_MODE_DFF1) 1054 #define AHD_MODE_CCHAN_MSK AHD_MK_MSK(AHD_MODE_CCHAN) 1055 #define AHD_MODE_SCSI_MSK AHD_MK_MSK(AHD_MODE_SCSI) 1056 #define AHD_MODE_CFG_MSK AHD_MK_MSK(AHD_MODE_CFG) 1057 #define AHD_MODE_UNKNOWN_MSK AHD_MK_MSK(AHD_MODE_UNKNOWN) 1058 #define AHD_MODE_ANY_MSK (~0) 1059 1060 typedef uint8_t ahd_mode_state; 1061 1062 typedef void ahd_callback_t (void *); 1063 1064 struct ahd_softc { 1065 struct device sc_dev; 1066 1067 struct scsipi_channel sc_channel; 1068 struct device * sc_child; 1069 struct scsipi_adapter sc_adapter; 1070 1071 bus_space_tag_t tags[2]; 1072 bus_space_handle_t bshs[2]; 1073 1074 void *shutdown_hook; 1075 struct scb_data scb_data; 1076 1077 struct hardware_scb *next_queued_hscb; 1078 struct map_node *next_queued_hscb_map; 1079 1080 /* 1081 * SCBs that have been sent to the controller 1082 */ 1083 LIST_HEAD(, scb) pending_scbs; 1084 1085 /* 1086 * Current register window mode information. 1087 */ 1088 ahd_mode dst_mode; 1089 ahd_mode src_mode; 1090 1091 /* 1092 * Saved register window mode information 1093 * used for restore on next unpause. 1094 */ 1095 ahd_mode saved_dst_mode; 1096 ahd_mode saved_src_mode; 1097 1098 /* 1099 * Platform specific data. 1100 */ 1101 struct ahd_platform_data *platform_data; 1102 1103 /* 1104 * Bus specific device information. 1105 */ 1106 ahd_bus_intr_t bus_intr; 1107 1108 /* 1109 * Target mode related state kept on a per enabled lun basis. 1110 * Targets that are not enabled will have null entries. 1111 * As an initiator, we keep one target entry for our initiator 1112 * ID to store our sync/wide transfer settings. 1113 */ 1114 struct ahd_tmode_tstate *enabled_targets[AHD_NUM_TARGETS]; 1115 1116 char inited_target[AHD_NUM_TARGETS]; 1117 1118 /* 1119 * The black hole device responsible for handling requests for 1120 * disabled luns on enabled targets. 1121 */ 1122 struct ahd_tmode_lstate *black_hole; 1123 1124 /* 1125 * Device instance currently on the bus awaiting a continue TIO 1126 * for a command that was not given the disconnect priviledge. 1127 */ 1128 struct ahd_tmode_lstate *pending_device; 1129 1130 /* 1131 * Timer handles for timer driven callbacks. 1132 */ 1133 ahd_timer_t reset_timer; 1134 ahd_timer_t stat_timer; 1135 1136 /* 1137 * Statistics. 1138 */ 1139 #define AHD_STAT_UPDATE_US 250000 /* 250ms */ 1140 #define AHD_STAT_BUCKETS 4 1141 u_int cmdcmplt_bucket; 1142 uint32_t cmdcmplt_counts[AHD_STAT_BUCKETS]; 1143 uint32_t cmdcmplt_total; 1144 1145 /* 1146 * Card characteristics 1147 */ 1148 ahd_chip chip; 1149 ahd_feature features; 1150 ahd_bug bugs; 1151 ahd_flag flags; 1152 struct seeprom_config *seep_config; 1153 1154 /* Values to store in the SEQCTL register for pause and unpause */ 1155 uint8_t unpause; 1156 uint8_t pause; 1157 1158 /* Command Queues */ 1159 uint16_t qoutfifonext; 1160 uint16_t qoutfifonext_valid_tag; 1161 uint16_t qinfifonext; 1162 uint16_t qinfifo[AHD_SCB_MAX]; 1163 uint16_t *qoutfifo; 1164 1165 /* Critical Section Data */ 1166 struct cs *critical_sections; 1167 u_int num_critical_sections; 1168 1169 /* Buffer for handling packetized bitbucket. */ 1170 uint8_t *overrun_buf; 1171 1172 /* Links for chaining softcs */ 1173 TAILQ_ENTRY(ahd_softc) links; 1174 1175 /* Channel Names ('A', 'B', etc.) */ 1176 char channel; 1177 1178 /* Initiator Bus ID */ 1179 uint8_t our_id; 1180 1181 /* 1182 * Target incoming command FIFO. 1183 */ 1184 struct target_cmd *targetcmds; 1185 uint8_t tqinfifonext; 1186 1187 /* 1188 * Cached verson of the hs_mailbox so we can avoid 1189 * pausing the sequencer during mailbox updates. 1190 */ 1191 uint8_t hs_mailbox; 1192 1193 /* 1194 * Incoming and outgoing message handling. 1195 */ 1196 uint8_t send_msg_perror; 1197 ahd_msg_flags msg_flags; 1198 ahd_msg_type msg_type; 1199 uint8_t msgout_buf[12];/* Message we are sending */ 1200 uint8_t msgin_buf[12];/* Message we are receiving */ 1201 u_int msgout_len; /* Length of message to send */ 1202 u_int msgout_index; /* Current index in msgout */ 1203 u_int msgin_index; /* Current index in msgin */ 1204 1205 /* 1206 * Mapping information for data structures shared 1207 * between the sequencer and kernel. 1208 */ 1209 bus_dma_tag_t parent_dmat; 1210 bus_dma_tag_t shared_data_dmat; 1211 struct map_node shared_data_map; 1212 int shared_data_size; 1213 int sc_dmaflags; 1214 1215 /* Information saved through suspend/resume cycles */ 1216 struct ahd_suspend_state suspend_state; 1217 1218 /* Number of enabled target mode device on this card */ 1219 u_int enabled_luns; 1220 1221 /* Initialization level of this data structure */ 1222 u_int init_level; 1223 1224 /* PCI cacheline size. */ 1225 u_int pci_cachesize; 1226 1227 /* IO Cell Parameters */ 1228 uint8_t iocell_opts[AHD_NUM_PER_DEV_ANNEXCOLS]; 1229 1230 u_int stack_size; 1231 uint16_t *saved_stack; 1232 1233 /* Per-Unit descriptive information */ 1234 const char *description; 1235 const char *bus_description; 1236 char *name; 1237 int unit; 1238 1239 /* Selection Timer settings */ 1240 int seltime; 1241 1242 /* 1243 * Interrupt coalescing settings. 1244 */ 1245 #define AHD_INT_COALESCING_TIMER_DEFAULT 250 /*us*/ 1246 #define AHD_INT_COALESCING_MAXCMDS_DEFAULT 10 1247 #define AHD_INT_COALESCING_MAXCMDS_MAX 127 1248 #define AHD_INT_COALESCING_MINCMDS_DEFAULT 5 1249 #define AHD_INT_COALESCING_MINCMDS_MAX 127 1250 #define AHD_INT_COALESCING_THRESHOLD_DEFAULT 2000 1251 #define AHD_INT_COALESCING_STOP_THRESHOLD_DEFAULT 1000 1252 u_int int_coalescing_timer; 1253 u_int int_coalescing_maxcmds; 1254 u_int int_coalescing_mincmds; 1255 u_int int_coalescing_threshold; 1256 u_int int_coalescing_stop_threshold; 1257 1258 uint16_t user_discenable;/* Disconnection allowed */ 1259 uint16_t user_tagenable;/* Tagged Queuing allowed */ 1260 1261 /* Adapter interrupt routine */ 1262 void* ih; 1263 struct ahd_pci_busdata *bus_data; 1264 }; 1265 1266 TAILQ_HEAD(ahd_softc_tailq, ahd_softc); 1267 extern struct ahd_softc_tailq ahd_tailq; 1268 1269 /*************************** IO Cell Configuration ****************************/ 1270 #define AHD_PRECOMP_SLEW_INDEX \ 1271 (AHD_ANNEXCOL_PRECOMP_SLEW - AHD_ANNEXCOL_PER_DEV0) 1272 1273 #define AHD_AMPLITUDE_INDEX \ 1274 (AHD_ANNEXCOL_AMPLITUDE - AHD_ANNEXCOL_PER_DEV0) 1275 1276 #define AHD_SET_SLEWRATE(ahd, new_slew) \ 1277 do { \ 1278 (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_SLEWRATE_MASK; \ 1279 (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |= \ 1280 (((new_slew) << AHD_SLEWRATE_SHIFT) & AHD_SLEWRATE_MASK); \ 1281 } while (0) 1282 1283 #define AHD_SET_PRECOMP(ahd, new_pcomp) \ 1284 do { \ 1285 (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_PRECOMP_MASK; \ 1286 (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |= \ 1287 (((new_pcomp) << AHD_PRECOMP_SHIFT) & AHD_PRECOMP_MASK); \ 1288 } while (0) 1289 1290 #define AHD_SET_AMPLITUDE(ahd, new_amp) \ 1291 do { \ 1292 (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] &= ~AHD_AMPLITUDE_MASK; \ 1293 (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] |= \ 1294 (((new_amp) << AHD_AMPLITUDE_SHIFT) & AHD_AMPLITUDE_MASK); \ 1295 } while (0) 1296 1297 /************************ Active Device Information ***************************/ 1298 typedef enum { 1299 ROLE_UNKNOWN, 1300 ROLE_INITIATOR, 1301 ROLE_TARGET 1302 } role_t; 1303 1304 struct ahd_devinfo { 1305 int our_scsiid; 1306 int target_offset; 1307 uint16_t target_mask; 1308 u_int target; 1309 u_int lun; 1310 char channel; 1311 role_t role; /* 1312 * Only guaranteed to be correct if not 1313 * in the busfree state. 1314 */ 1315 }; 1316 1317 /****************************** PCI Structures ********************************/ 1318 #define AHD_PCI_IOADDR0 PCI_MAPREG_START /* I/O BAR*/ 1319 #define AHD_PCI_MEMADDR (PCI_MAPREG_START + 4) /* Memory BAR */ 1320 #define AHD_PCI_IOADDR1 (PCI_MAPREG_START + 12)/* Second I/O BAR */ 1321 1322 typedef int (ahd_device_setup_t)(struct ahd_softc *, struct pci_attach_args *); 1323 1324 struct ahd_pci_identity { 1325 uint64_t full_id; 1326 uint64_t id_mask; 1327 char *name; 1328 ahd_device_setup_t *setup; 1329 }; 1330 extern struct ahd_pci_identity ahd_pci_ident_table []; 1331 extern const u_int ahd_num_pci_devs; 1332 1333 /***************************** VL/EISA Declarations ***************************/ 1334 struct aic7770_identity { 1335 uint32_t full_id; 1336 uint32_t id_mask; 1337 char *name; 1338 ahd_device_setup_t *setup; 1339 }; 1340 extern struct aic7770_identity aic7770_ident_table []; 1341 extern const int ahd_num_aic7770_devs; 1342 1343 #define AHD_EISA_SLOT_OFFSET 0xc00 1344 #define AHD_EISA_IOSIZE 0x100 1345 1346 /*************************** Function Declarations ****************************/ 1347 /******************************************************************************/ 1348 void ahd_reset_cmds_pending(struct ahd_softc *); 1349 u_int ahd_find_busy_tcl(struct ahd_softc *, u_int); 1350 void ahd_busy_tcl(struct ahd_softc *, u_int, u_int); 1351 static __inline void ahd_unbusy_tcl(struct ahd_softc *, u_int); 1352 static __inline void 1353 ahd_unbusy_tcl(struct ahd_softc *ahd, u_int tcl) 1354 { 1355 ahd_busy_tcl(ahd, tcl, SCB_LIST_NULL); 1356 } 1357 1358 /***************************** PCI Front End *********************************/ 1359 const struct ahd_pci_identity *ahd_find_pci_device(pcireg_t, pcireg_t); /*ahd_dev_softc_t);*/ 1360 int ahd_pci_config(struct ahd_softc *, 1361 struct ahd_pci_identity *); 1362 int ahd_pci_test_register_access(struct ahd_softc *); 1363 1364 /************************** SCB and SCB queue management **********************/ 1365 int ahd_probe_scbs(struct ahd_softc *); 1366 void ahd_qinfifo_requeue_tail(struct ahd_softc *, 1367 struct scb *); 1368 int ahd_match_scb(struct ahd_softc *, struct scb *, 1369 int, char, int, u_int, role_t); 1370 1371 /****************************** Initialization ********************************/ 1372 /*struct ahd_softc *ahd_alloc(void *, char *);*/ 1373 int ahd_softc_init(struct ahd_softc *); 1374 void ahd_controller_info(struct ahd_softc *, char *); 1375 int ahd_init(struct ahd_softc *); 1376 int ahd_default_config(struct ahd_softc *); 1377 int ahd_parse_vpddata(struct ahd_softc *, 1378 struct vpd_config *); 1379 int ahd_parse_cfgdata(struct ahd_softc *, 1380 struct seeprom_config *); 1381 void ahd_intr_enable(struct ahd_softc *, int); 1382 void ahd_update_coalescing_values(struct ahd_softc *, 1383 u_int, u_int, u_int); 1384 void ahd_enable_coalescing(struct ahd_softc *, int); 1385 void ahd_pause_and_flushwork(struct ahd_softc *); 1386 int ahd_suspend(struct ahd_softc *); 1387 int ahd_resume(struct ahd_softc *); 1388 void ahd_set_unit(struct ahd_softc *, int); 1389 void ahd_set_name(struct ahd_softc *, char *); 1390 struct scb *ahd_get_scb(struct ahd_softc *, u_int); 1391 void ahd_free_scb(struct ahd_softc *, struct scb *); 1392 int ahd_alloc_scbs(struct ahd_softc *); 1393 void ahd_free(struct ahd_softc *); 1394 int ahd_reset(struct ahd_softc *, int); 1395 void ahd_shutdown(void *); 1396 int ahd_write_flexport(struct ahd_softc *, 1397 u_int, u_int); 1398 int ahd_read_flexport(struct ahd_softc *, u_int, 1399 uint8_t *); 1400 int ahd_wait_flexport(struct ahd_softc *); 1401 1402 /*************************** Interrupt Services *******************************/ 1403 int ahd_pci_intr(struct ahd_softc *); 1404 void ahd_clear_intstat(struct ahd_softc *); 1405 void ahd_flush_qoutfifo(struct ahd_softc *); 1406 void ahd_run_qoutfifo(struct ahd_softc *); 1407 void ahd_run_post_qoutfifo(struct ahd_softc *); 1408 #ifdef AHD_TARGET_MODE 1409 void ahd_run_tqinfifo(struct ahd_softc *, int); 1410 #endif 1411 void ahd_handle_hwerrint(struct ahd_softc *); 1412 void ahd_handle_seqint(struct ahd_softc *, u_int); 1413 void ahd_handle_scsiint(struct ahd_softc *, u_int); 1414 void ahd_clear_critical_section(struct ahd_softc *); 1415 1416 /***************************** Error Recovery *********************************/ 1417 typedef enum { 1418 SEARCH_COMPLETE, 1419 SEARCH_COUNT, 1420 SEARCH_REMOVE, 1421 SEARCH_PRINT 1422 } ahd_search_action; 1423 int ahd_search_qinfifo(struct ahd_softc *, int, char, int, 1424 u_int, role_t, uint32_t, ahd_search_action); 1425 int ahd_search_disc_list(struct ahd_softc *, int, char, 1426 int, u_int, int, int, int); 1427 void ahd_freeze_devq(struct ahd_softc *, struct scb *); 1428 int ahd_reset_channel(struct ahd_softc *, char, int); 1429 int ahd_abort_scbs(struct ahd_softc *, int, char, int, 1430 u_int, role_t, uint32_t); 1431 void ahd_restart(struct ahd_softc *); 1432 void ahd_clear_fifo(struct ahd_softc *, u_int); 1433 void ahd_handle_scb_status(struct ahd_softc *, struct scb *); 1434 void ahd_handle_scsi_status(struct ahd_softc *, 1435 struct scb *); 1436 void ahd_calc_residual(struct ahd_softc *, struct scb *); 1437 /*************************** Utility Functions ********************************/ 1438 struct ahd_phase_table_entry* 1439 ahd_lookup_phase_entry(int); 1440 void ahd_compile_devinfo(struct ahd_devinfo *, u_int, u_int, 1441 u_int, char, role_t); 1442 /************************** Transfer Negotiation ******************************/ 1443 void ahd_find_syncrate(struct ahd_softc *, u_int *, 1444 u_int *, u_int); 1445 void ahd_validate_offset(struct ahd_softc *, 1446 struct ahd_initiator_tinfo *, u_int, u_int *, 1447 int, role_t); 1448 void ahd_validate_width(struct ahd_softc *, 1449 struct ahd_initiator_tinfo *, u_int *, role_t); 1450 /* 1451 * Negotiation types. These are used to qualify if we should renegotiate 1452 * even if our goal and current transport parameters are identical. 1453 */ 1454 typedef enum { 1455 AHD_NEG_TO_GOAL, /* Renegotiate only if goal and curr differ. */ 1456 AHD_NEG_IF_NON_ASYNC, /* Renegotiate so long as goal is non-async. */ 1457 AHD_NEG_ALWAYS /* Renegotiat even if goal is async. */ 1458 } ahd_neg_type; 1459 int ahd_update_neg_request(struct ahd_softc *, 1460 struct ahd_devinfo *, struct ahd_tmode_tstate *, 1461 struct ahd_initiator_tinfo *, ahd_neg_type); 1462 void ahd_set_width(struct ahd_softc *, 1463 struct ahd_devinfo *, u_int, u_int, int); 1464 void ahd_set_syncrate(struct ahd_softc *, 1465 struct ahd_devinfo *, u_int, u_int, u_int, 1466 u_int, int); 1467 typedef enum { 1468 AHD_QUEUE_NONE, 1469 AHD_QUEUE_BASIC, 1470 AHD_QUEUE_TAGGED 1471 } ahd_queue_alg; 1472 1473 void ahd_set_tags(struct ahd_softc *, struct ahd_devinfo *, 1474 ahd_queue_alg); 1475 1476 /**************************** Target Mode *************************************/ 1477 #ifdef AHD_TARGET_MODE 1478 void ahd_send_lstate_events(struct ahd_softc *, 1479 struct ahd_tmode_lstate *); 1480 void ahd_handle_en_lun(struct ahd_softc *, 1481 struct cam_sim *, union ccb *); 1482 cam_status ahd_find_tmode_devs(struct ahd_softc *, struct cam_sim *, 1483 union ccb *, struct ahd_tmode_tstate **, 1484 struct ahd_tmode_lstate **, int); 1485 #ifndef AHD_TMODE_ENABLE 1486 #define AHD_TMODE_ENABLE 0 1487 #endif 1488 #endif 1489 /******************************* Debug ***************************************/ 1490 #ifdef AHD_DEBUG 1491 extern uint32_t ahd_debug; 1492 #define AHD_SHOW_MISC 0x00001 1493 #define AHD_SHOW_SENSE 0x00002 1494 #define AHD_SHOW_RECOVERY 0x00004 1495 #define AHD_DUMP_SEEPROM 0x00008 1496 #define AHD_SHOW_TERMCTL 0x00010 1497 #define AHD_SHOW_MEMORY 0x00020 1498 #define AHD_SHOW_MESSAGES 0x00040 1499 #define AHD_SHOW_MODEPTR 0x00080 1500 #define AHD_SHOW_SELTO 0x00100 1501 #define AHD_SHOW_FIFOS 0x00200 1502 #define AHD_SHOW_QFULL 0x00400 1503 #define AHD_SHOW_DV 0x00800 1504 #define AHD_SHOW_MASKED_ERRORS 0x01000 1505 #define AHD_SHOW_QUEUE 0x02000 1506 #define AHD_SHOW_TQIN 0x04000 1507 #define AHD_SHOW_SG 0x08000 1508 #define AHD_SHOW_INT_COALESCING 0x10000 1509 #define AHD_DEBUG_SEQUENCER 0x20000 1510 #endif 1511 void ahd_print_scb(struct scb *); 1512 void ahd_print_devinfo(struct ahd_softc *, 1513 struct ahd_devinfo *); 1514 void ahd_dump_sglist(struct scb *); 1515 void ahd_dump_all_cards_state(void); 1516 void ahd_dump_card_state(struct ahd_softc *); 1517 int ahd_print_register(ahd_reg_parse_entry_t *, u_int, 1518 const char *, u_int, u_int, u_int *, u_int); 1519 void ahd_dump_scbs(struct ahd_softc *); 1520 #endif /* _AIC79XXVAR_H_ */
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