Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/aac/aacvar.h
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1 /*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2001 Scott Long 4 * Copyright (c) 2000 BSDi 5 * Copyright (c) 2001 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 * 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #include <sys/bio.h> 33 #include <sys/lock.h> 34 #include <sys/mutex.h> 35 #include <sys/taskqueue.h> 36 #include <sys/selinfo.h> 37 #include <geom/geom_disk.h> 38 39 40 /* 41 * Driver Parameter Definitions 42 */ 43 44 /* 45 * The firmware interface allows for a 16-bit s/g list length. We limit 46 * ourselves to a reasonable maximum and ensure alignment. 47 */ 48 #define AAC_MAXSGENTRIES 64 /* max S/G entries, limit 65535 */ 49 50 /* 51 * We allocate a small set of FIBs for the adapter to use to send us messages. 52 */ 53 #define AAC_ADAPTER_FIBS 8 54 55 /* 56 * FIBs are allocated in page-size chunks and can grow up to the 512 57 * limit imposed by the hardware. 58 */ 59 #define AAC_FIB_COUNT (PAGE_SIZE/sizeof(struct aac_fib)) 60 #define AAC_PREALLOCATE_FIBS 128 61 #define AAC_MAX_FIBS 504 62 63 /* 64 * The controller reports status events in AIFs. We hang on to a number of 65 * these in order to pass them out to user-space management tools. 66 */ 67 #define AAC_AIFQ_LENGTH 64 68 69 /* 70 * Firmware messages are passed in the printf buffer. 71 */ 72 #define AAC_PRINTF_BUFSIZE 256 73 74 /* 75 * We wait this many seconds for the adapter to come ready if it is still 76 * booting 77 */ 78 #define AAC_BOOT_TIMEOUT (3 * 60) 79 80 /* 81 * Timeout for immediate commands. 82 */ 83 #define AAC_IMMEDIATE_TIMEOUT 30 /* seconds */ 84 85 /* 86 * Timeout for normal commands 87 */ 88 #define AAC_CMD_TIMEOUT 30 /* seconds */ 89 90 /* 91 * Rate at which we periodically check for timed out commands and kick the 92 * controller. 93 */ 94 #define AAC_PERIODIC_INTERVAL 20 /* seconds */ 95 96 /* 97 * Per-container data structure 98 */ 99 struct aac_container 100 { 101 struct aac_mntobj co_mntobj; 102 device_t co_disk; 103 int co_found; 104 TAILQ_ENTRY(aac_container) co_link; 105 }; 106 107 /* 108 * Per-SIM data structure 109 */ 110 struct aac_sim 111 { 112 device_t sim_dev; 113 int TargetsPerBus; 114 int BusNumber; 115 int InitiatorBusId; 116 struct aac_softc *aac_sc; 117 TAILQ_ENTRY(aac_sim) sim_link; 118 }; 119 120 /* 121 * Per-disk structure 122 */ 123 struct aac_disk 124 { 125 device_t ad_dev; 126 struct aac_softc *ad_controller; 127 struct aac_container *ad_container; 128 struct disk *ad_disk; 129 int ad_flags; 130 #define AAC_DISK_OPEN (1<<0) 131 int ad_cylinders; 132 int ad_heads; 133 int ad_sectors; 134 u_int32_t ad_size; 135 int unit; 136 }; 137 138 /* 139 * Per-command control structure. 140 */ 141 struct aac_command 142 { 143 TAILQ_ENTRY(aac_command) cm_link; /* list linkage */ 144 145 struct aac_softc *cm_sc; /* controller that owns us */ 146 147 struct aac_fib *cm_fib; /* FIB associated with this 148 * command */ 149 u_int32_t cm_fibphys; /* bus address of the FIB */ 150 struct bio *cm_data; /* pointer to data in kernel 151 * space */ 152 u_int32_t cm_datalen; /* data length */ 153 bus_dmamap_t cm_datamap; /* DMA map for bio data */ 154 struct aac_sg_table *cm_sgtable; /* pointer to s/g table in 155 * command */ 156 int cm_flags; 157 #define AAC_CMD_MAPPED (1<<0) /* command has had its data 158 * mapped */ 159 #define AAC_CMD_DATAIN (1<<1) /* command involves data moving 160 * from controller to host */ 161 #define AAC_CMD_DATAOUT (1<<2) /* command involves data moving 162 * from host to controller */ 163 #define AAC_CMD_COMPLETED (1<<3) /* command has been completed */ 164 #define AAC_CMD_TIMEDOUT (1<<4) /* command taken too long */ 165 #define AAC_ON_AACQ_FREE (1<<5) 166 #define AAC_ON_AACQ_READY (1<<6) 167 #define AAC_ON_AACQ_BUSY (1<<7) 168 #define AAC_ON_AACQ_MASK ((1<<5)|(1<<6)|(1<<7)) 169 #define AAC_QUEUE_FRZN (1<<9) /* Freeze the processing of 170 * commands on the queue. */ 171 172 void (* cm_complete)(struct aac_command *cm); 173 void *cm_private; 174 time_t cm_timestamp; /* command creation time */ 175 int cm_queue; 176 int cm_index; 177 }; 178 179 struct aac_fibmap { 180 TAILQ_ENTRY(aac_fibmap) fm_link; /* list linkage */ 181 struct aac_fib *aac_fibs; 182 bus_dmamap_t aac_fibmap; 183 struct aac_command *aac_commands; 184 }; 185 186 /* 187 * We gather a number of adapter-visible items into a single structure. 188 * 189 * The ordering of this strucure may be important; we copy the Linux driver: 190 * 191 * Adapter FIBs 192 * Init struct 193 * Queue headers (Comm Area) 194 * Printf buffer 195 * 196 * In addition, we add: 197 * Sync Fib 198 */ 199 struct aac_common { 200 /* fibs for the controller to send us messages */ 201 struct aac_fib ac_fibs[AAC_ADAPTER_FIBS]; 202 203 /* the init structure */ 204 struct aac_adapter_init ac_init; 205 206 /* arena within which the queue structures are kept */ 207 u_int8_t ac_qbuf[sizeof(struct aac_queue_table) + 208 AAC_QUEUE_ALIGN]; 209 210 /* buffer for text messages from the controller */ 211 char ac_printf[AAC_PRINTF_BUFSIZE]; 212 213 /* fib for synchronous commands */ 214 struct aac_fib ac_sync_fib; 215 }; 216 217 /* 218 * Interface operations 219 */ 220 struct aac_interface 221 { 222 int (*aif_get_fwstatus)(struct aac_softc *sc); 223 void (*aif_qnotify)(struct aac_softc *sc, int qbit); 224 int (*aif_get_istatus)(struct aac_softc *sc); 225 void (*aif_clr_istatus)(struct aac_softc *sc, int mask); 226 void (*aif_set_mailbox)(struct aac_softc *sc, u_int32_t command, 227 u_int32_t arg0, u_int32_t arg1, 228 u_int32_t arg2, u_int32_t arg3); 229 int (*aif_get_mailbox)(struct aac_softc *sc, int mb); 230 void (*aif_set_interrupts)(struct aac_softc *sc, int enable); 231 }; 232 extern struct aac_interface aac_rx_interface; 233 extern struct aac_interface aac_sa_interface; 234 extern struct aac_interface aac_fa_interface; 235 extern struct aac_interface aac_rkt_interface; 236 237 #define AAC_GET_FWSTATUS(sc) ((sc)->aac_if.aif_get_fwstatus((sc))) 238 #define AAC_QNOTIFY(sc, qbit) ((sc)->aac_if.aif_qnotify((sc), (qbit))) 239 #define AAC_GET_ISTATUS(sc) ((sc)->aac_if.aif_get_istatus((sc))) 240 #define AAC_CLEAR_ISTATUS(sc, mask) ((sc)->aac_if.aif_clr_istatus((sc), \ 241 (mask))) 242 #define AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3) \ 243 ((sc)->aac_if.aif_set_mailbox((sc), (command), (arg0), (arg1), (arg2), \ 244 (arg3))) 245 #define AAC_GET_MAILBOX(sc, mb) ((sc)->aac_if.aif_get_mailbox((sc), \ 246 (mb))) 247 #define AAC_MASK_INTERRUPTS(sc) ((sc)->aac_if.aif_set_interrupts((sc), \ 248 0)) 249 #define AAC_UNMASK_INTERRUPTS(sc) ((sc)->aac_if.aif_set_interrupts((sc), \ 250 1)) 251 252 #define AAC_SETREG4(sc, reg, val) bus_space_write_4(sc->aac_btag, \ 253 sc->aac_bhandle, reg, val) 254 #define AAC_GETREG4(sc, reg) bus_space_read_4 (sc->aac_btag, \ 255 sc->aac_bhandle, reg) 256 #define AAC_SETREG2(sc, reg, val) bus_space_write_2(sc->aac_btag, \ 257 sc->aac_bhandle, reg, val) 258 #define AAC_GETREG2(sc, reg) bus_space_read_2 (sc->aac_btag, \ 259 sc->aac_bhandle, reg) 260 #define AAC_SETREG1(sc, reg, val) bus_space_write_1(sc->aac_btag, \ 261 sc->aac_bhandle, reg, val) 262 #define AAC_GETREG1(sc, reg) bus_space_read_1 (sc->aac_btag, \ 263 sc->aac_bhandle, reg) 264 265 /* 266 * Per-controller structure. 267 */ 268 struct aac_softc 269 { 270 /* bus connections */ 271 device_t aac_dev; 272 struct resource *aac_regs_resource; /* register interface 273 * window */ 274 int aac_regs_rid; /* resource ID */ 275 bus_space_handle_t aac_bhandle; /* bus space handle */ 276 bus_space_tag_t aac_btag; /* bus space tag */ 277 bus_dma_tag_t aac_parent_dmat; /* parent DMA tag */ 278 bus_dma_tag_t aac_buffer_dmat; /* data buffer/command 279 * DMA tag */ 280 struct resource *aac_irq; /* interrupt */ 281 int aac_irq_rid; 282 void *aac_intr; /* interrupt handle */ 283 eventhandler_tag eh; 284 285 /* controller features, limits and status */ 286 int aac_state; 287 #define AAC_STATE_SUSPEND (1<<0) 288 #define AAC_STATE_OPEN (1<<1) 289 #define AAC_STATE_INTERRUPTS_ON (1<<2) 290 #define AAC_STATE_AIF_SLEEPER (1<<3) 291 struct FsaRevision aac_revision; 292 293 /* controller hardware interface */ 294 int aac_hwif; 295 #define AAC_HWIF_I960RX 0 296 #define AAC_HWIF_STRONGARM 1 297 #define AAC_HWIF_FALCON 2 298 #define AAC_HWIF_RKT 3 299 #define AAC_HWIF_UNKNOWN -1 300 bus_dma_tag_t aac_common_dmat; /* common structure 301 * DMA tag */ 302 bus_dmamap_t aac_common_dmamap; /* common structure 303 * DMA map */ 304 struct aac_common *aac_common; 305 u_int32_t aac_common_busaddr; 306 struct aac_interface aac_if; 307 308 /* command/fib resources */ 309 bus_dma_tag_t aac_fib_dmat; /* DMA tag for allocing FIBs */ 310 TAILQ_HEAD(,aac_fibmap) aac_fibmap_tqh; 311 u_int total_fibs; 312 struct aac_command *aac_commands; 313 314 /* command management */ 315 TAILQ_HEAD(,aac_command) aac_free; /* command structures 316 * available for reuse */ 317 TAILQ_HEAD(,aac_command) aac_ready; /* commands on hold for 318 * controller resources */ 319 TAILQ_HEAD(,aac_command) aac_busy; 320 struct bio_queue_head aac_bioq; 321 struct aac_queue_table *aac_queues; 322 struct aac_queue_entry *aac_qentries[AAC_QUEUE_COUNT]; 323 324 struct aac_qstat aac_qstat[AACQ_COUNT]; /* queue statistics */ 325 326 /* connected containters */ 327 TAILQ_HEAD(,aac_container) aac_container_tqh; 328 struct mtx aac_container_lock; 329 330 /* 331 * The general I/O lock. This protects the sync fib, the lists, the 332 * queues, and the registers. 333 */ 334 struct mtx aac_io_lock; 335 336 /* delayed activity infrastructure */ 337 struct task aac_task_complete; /* deferred-completion 338 * task */ 339 struct intr_config_hook aac_ich; 340 341 /* management interface */ 342 struct cdev *aac_dev_t; 343 struct mtx aac_aifq_lock; 344 struct aac_aif_command aac_aifq[AAC_AIFQ_LENGTH]; 345 int aac_aifq_head; 346 int aac_aifq_tail; 347 struct selinfo rcv_select; 348 struct proc *aifthread; 349 int aifflags; 350 #define AAC_AIFFLAGS_RUNNING (1 << 0) 351 #define AAC_AIFFLAGS_AIF (1 << 1) 352 #define AAC_AIFFLAGS_EXIT (1 << 2) 353 #define AAC_AIFFLAGS_EXITED (1 << 3) 354 #define AAC_AIFFLAGS_PRINTF (1 << 4) 355 #define AAC_AIFFLAGS_ALLOCFIBS (1 << 5) 356 #define AAC_AIFFLAGS_PENDING (AAC_AIFFLAGS_AIF | AAC_AIFFLAGS_PRINTF | \ 357 AAC_AIFFLAGS_ALLOCFIBS) 358 u_int32_t flags; 359 #define AAC_FLAGS_PERC2QC (1 << 0) 360 #define AAC_FLAGS_ENABLE_CAM (1 << 1) /* No SCSI passthrough */ 361 #define AAC_FLAGS_CAM_NORESET (1 << 2) /* Fake SCSI resets */ 362 #define AAC_FLAGS_CAM_PASSONLY (1 << 3) /* Only create pass devices */ 363 #define AAC_FLAGS_SG_64BIT (1 << 4) /* Use 64-bit S/G addresses */ 364 #define AAC_FLAGS_4GB_WINDOW (1 << 5) /* Device can access host mem 365 * 2GB-4GB range */ 366 #define AAC_FLAGS_NO4GB (1 << 6) /* Can't access host mem >2GB */ 367 #define AAC_FLAGS_256FIBS (1 << 7) /* Can only do 256 commands */ 368 #define AAC_FLAGS_BROKEN_MEMMAP (1 << 8) /* Broken HostPhysMemPages */ 369 370 u_int32_t supported_options; 371 int aac_max_fibs; 372 u_int32_t scsi_method_id; 373 TAILQ_HEAD(,aac_sim) aac_sim_tqh; 374 }; 375 376 377 /* 378 * Public functions 379 */ 380 extern void aac_free(struct aac_softc *sc); 381 extern int aac_attach(struct aac_softc *sc); 382 extern int aac_detach(device_t dev); 383 extern int aac_shutdown(device_t dev); 384 extern int aac_suspend(device_t dev); 385 extern int aac_resume(device_t dev); 386 extern void aac_intr(void *arg); 387 extern void aac_submit_bio(struct bio *bp); 388 extern void aac_biodone(struct bio *bp); 389 extern void aac_startio(struct aac_softc *sc); 390 extern int aac_alloc_command(struct aac_softc *sc, 391 struct aac_command **cmp); 392 extern void aac_release_command(struct aac_command *cm); 393 extern int aac_sync_fib(struct aac_softc *sc, u_int32_t command, 394 u_int32_t xferstate, struct aac_fib *fib, 395 u_int16_t datasize); 396 397 /* 398 * Debugging levels: 399 * 0 - quiet, only emit warnings 400 * 1 - noisy, emit major function points and things done 401 * 2 - extremely noisy, emit trace items in loops, etc. 402 */ 403 #ifdef AAC_DEBUG 404 # define debug(level, fmt, args...) \ 405 do { \ 406 if (level <=AAC_DEBUG) printf("%s: " fmt "\n", __func__ , ##args); \ 407 } while (0) 408 # define debug_called(level) \ 409 do { \ 410 if (level <= AAC_DEBUG) printf("%s: called\n", __func__); \ 411 } while (0) 412 413 extern void aac_print_queues(struct aac_softc *sc); 414 extern void aac_panic(struct aac_softc *sc, char *reason); 415 extern void aac_print_fib(struct aac_softc *sc, struct aac_fib *fib, 416 const char *caller); 417 extern void aac_print_aif(struct aac_softc *sc, 418 struct aac_aif_command *aif); 419 420 #define AAC_PRINT_FIB(sc, fib) aac_print_fib(sc, fib, __func__) 421 422 #else 423 # define debug(level, fmt, args...) 424 # define debug_called(level) 425 426 # define aac_print_queues(sc) 427 # define aac_panic(sc, reason) 428 429 # define AAC_PRINT_FIB(sc, fib) 430 # define aac_print_aif(sc, aac_aif_command) 431 #endif 432 433 struct aac_code_lookup { 434 char *string; 435 u_int32_t code; 436 }; 437 438 /* 439 * Queue primitives for driver queues. 440 */ 441 #define AACQ_ADD(sc, qname) \ 442 do { \ 443 struct aac_qstat *qs; \ 444 \ 445 qs = &(sc)->aac_qstat[qname]; \ 446 \ 447 qs->q_length++; \ 448 if (qs->q_length > qs->q_max) \ 449 qs->q_max = qs->q_length; \ 450 } while (0) 451 452 #define AACQ_REMOVE(sc, qname) (sc)->aac_qstat[qname].q_length-- 453 #define AACQ_INIT(sc, qname) \ 454 do { \ 455 sc->aac_qstat[qname].q_length = 0; \ 456 sc->aac_qstat[qname].q_max = 0; \ 457 } while (0) 458 459 460 #define AACQ_COMMAND_QUEUE(name, index) \ 461 static __inline void \ 462 aac_initq_ ## name (struct aac_softc *sc) \ 463 { \ 464 TAILQ_INIT(&sc->aac_ ## name); \ 465 AACQ_INIT(sc, index); \ 466 } \ 467 static __inline void \ 468 aac_enqueue_ ## name (struct aac_command *cm) \ 469 { \ 470 if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \ 471 printf("command %p is on another queue, flags = %#x\n", \ 472 cm, cm->cm_flags); \ 473 panic("command is on another queue"); \ 474 } \ 475 TAILQ_INSERT_TAIL(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 476 cm->cm_flags |= AAC_ON_ ## index; \ 477 AACQ_ADD(cm->cm_sc, index); \ 478 } \ 479 static __inline void \ 480 aac_requeue_ ## name (struct aac_command *cm) \ 481 { \ 482 if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \ 483 printf("command %p is on another queue, flags = %#x\n", \ 484 cm, cm->cm_flags); \ 485 panic("command is on another queue"); \ 486 } \ 487 TAILQ_INSERT_HEAD(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 488 cm->cm_flags |= AAC_ON_ ## index; \ 489 AACQ_ADD(cm->cm_sc, index); \ 490 } \ 491 static __inline struct aac_command * \ 492 aac_dequeue_ ## name (struct aac_softc *sc) \ 493 { \ 494 struct aac_command *cm; \ 495 \ 496 if ((cm = TAILQ_FIRST(&sc->aac_ ## name)) != NULL) { \ 497 if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \ 498 printf("command %p not in queue, flags = %#x, " \ 499 "bit = %#x\n", cm, cm->cm_flags, \ 500 AAC_ON_ ## index); \ 501 panic("command not in queue"); \ 502 } \ 503 TAILQ_REMOVE(&sc->aac_ ## name, cm, cm_link); \ 504 cm->cm_flags &= ~AAC_ON_ ## index; \ 505 AACQ_REMOVE(sc, index); \ 506 } \ 507 return(cm); \ 508 } \ 509 static __inline void \ 510 aac_remove_ ## name (struct aac_command *cm) \ 511 { \ 512 if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \ 513 printf("command %p not in queue, flags = %#x, " \ 514 "bit = %#x\n", cm, cm->cm_flags, \ 515 AAC_ON_ ## index); \ 516 panic("command not in queue"); \ 517 } \ 518 TAILQ_REMOVE(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 519 cm->cm_flags &= ~AAC_ON_ ## index; \ 520 AACQ_REMOVE(cm->cm_sc, index); \ 521 } \ 522 struct hack 523 524 AACQ_COMMAND_QUEUE(free, AACQ_FREE); 525 AACQ_COMMAND_QUEUE(ready, AACQ_READY); 526 AACQ_COMMAND_QUEUE(busy, AACQ_BUSY); 527 528 /* 529 * outstanding bio queue 530 */ 531 static __inline void 532 aac_initq_bio(struct aac_softc *sc) 533 { 534 bioq_init(&sc->aac_bioq); 535 AACQ_INIT(sc, AACQ_BIO); 536 } 537 538 static __inline void 539 aac_enqueue_bio(struct aac_softc *sc, struct bio *bp) 540 { 541 bioq_insert_tail(&sc->aac_bioq, bp); 542 AACQ_ADD(sc, AACQ_BIO); 543 } 544 545 static __inline struct bio * 546 aac_dequeue_bio(struct aac_softc *sc) 547 { 548 struct bio *bp; 549 550 if ((bp = bioq_first(&sc->aac_bioq)) != NULL) { 551 bioq_remove(&sc->aac_bioq, bp); 552 AACQ_REMOVE(sc, AACQ_BIO); 553 } 554 return(bp); 555 } 556 557 static __inline void 558 aac_print_printf(struct aac_softc *sc) 559 { 560 /* 561 * XXX We have the ability to read the length of the printf string 562 * from out of the mailboxes. 563 */ 564 device_printf(sc->aac_dev, "**Monitor** %.*s", AAC_PRINTF_BUFSIZE, 565 sc->aac_common->ac_printf); 566 sc->aac_common->ac_printf[0] = 0; 567 AAC_QNOTIFY(sc, AAC_DB_PRINTF); 568 } 569 570 static __inline int 571 aac_alloc_sync_fib(struct aac_softc *sc, struct aac_fib **fib) 572 { 573 574 mtx_lock(&sc->aac_io_lock); 575 *fib = &sc->aac_common->ac_sync_fib; 576 return (0); 577 } 578 579 static __inline void 580 aac_release_sync_fib(struct aac_softc *sc) 581 { 582 583 mtx_unlock(&sc->aac_io_lock); 584 } 585
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