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 512 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_COMPLETE (1<<8) 169 #define AAC_ON_AACQ_MASK ((1<<5)|(1<<6)|(1<<7)|(1<<8)) 170 #define AAC_QUEUE_FRZN (1<<9) /* Freeze the processing of 171 * commands on the queue. */ 172 173 void (* cm_complete)(struct aac_command *cm); 174 void *cm_private; 175 time_t cm_timestamp; /* command creation time */ 176 int cm_queue; 177 int cm_index; 178 }; 179 180 struct aac_fibmap { 181 TAILQ_ENTRY(aac_fibmap) fm_link; /* list linkage */ 182 struct aac_fib *aac_fibs; 183 bus_dmamap_t aac_fibmap; 184 struct aac_command *aac_commands; 185 }; 186 187 /* 188 * We gather a number of adapter-visible items into a single structure. 189 * 190 * The ordering of this strucure may be important; we copy the Linux driver: 191 * 192 * Adapter FIBs 193 * Init struct 194 * Queue headers (Comm Area) 195 * Printf buffer 196 * 197 * In addition, we add: 198 * Sync Fib 199 */ 200 struct aac_common { 201 /* fibs for the controller to send us messages */ 202 struct aac_fib ac_fibs[AAC_ADAPTER_FIBS]; 203 204 /* the init structure */ 205 struct aac_adapter_init ac_init; 206 207 /* arena within which the queue structures are kept */ 208 u_int8_t ac_qbuf[sizeof(struct aac_queue_table) + 209 AAC_QUEUE_ALIGN]; 210 211 /* buffer for text messages from the controller */ 212 char ac_printf[AAC_PRINTF_BUFSIZE]; 213 214 /* fib for synchronous commands */ 215 struct aac_fib ac_sync_fib; 216 }; 217 218 /* 219 * Interface operations 220 */ 221 struct aac_interface 222 { 223 int (*aif_get_fwstatus)(struct aac_softc *sc); 224 void (*aif_qnotify)(struct aac_softc *sc, int qbit); 225 int (*aif_get_istatus)(struct aac_softc *sc); 226 void (*aif_clr_istatus)(struct aac_softc *sc, int mask); 227 void (*aif_set_mailbox)(struct aac_softc *sc, u_int32_t command, 228 u_int32_t arg0, u_int32_t arg1, 229 u_int32_t arg2, u_int32_t arg3); 230 int (*aif_get_mailbox)(struct aac_softc *sc, int mb); 231 void (*aif_set_interrupts)(struct aac_softc *sc, int enable); 232 }; 233 extern struct aac_interface aac_rx_interface; 234 extern struct aac_interface aac_sa_interface; 235 extern struct aac_interface aac_fa_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 /* Define the OS version specific locks */ 266 typedef struct mtx aac_lock_t; 267 #define AAC_LOCK_INIT(l, s) mtx_init(l, s, NULL, MTX_DEF) 268 #define AAC_LOCK_ACQUIRE(l) mtx_lock(l) 269 #define AAC_LOCK_RELEASE(l) mtx_unlock(l) 270 271 272 /* 273 * Per-controller structure. 274 */ 275 struct aac_softc 276 { 277 /* bus connections */ 278 device_t aac_dev; 279 struct resource *aac_regs_resource; /* register interface 280 * window */ 281 int aac_regs_rid; /* resource ID */ 282 bus_space_handle_t aac_bhandle; /* bus space handle */ 283 bus_space_tag_t aac_btag; /* bus space tag */ 284 bus_dma_tag_t aac_parent_dmat; /* parent DMA tag */ 285 bus_dma_tag_t aac_buffer_dmat; /* data buffer/command 286 * DMA tag */ 287 struct resource *aac_irq; /* interrupt */ 288 int aac_irq_rid; 289 void *aac_intr; /* interrupt handle */ 290 eventhandler_tag eh; 291 292 /* controller features, limits and status */ 293 int aac_state; 294 #define AAC_STATE_SUSPEND (1<<0) 295 #define AAC_STATE_OPEN (1<<1) 296 #define AAC_STATE_INTERRUPTS_ON (1<<2) 297 #define AAC_STATE_AIF_SLEEPER (1<<3) 298 struct FsaRevision aac_revision; 299 300 /* controller hardware interface */ 301 int aac_hwif; 302 #define AAC_HWIF_I960RX 0 303 #define AAC_HWIF_STRONGARM 1 304 #define AAC_HWIF_FALCON 2 305 #define AAC_HWIF_UNKNOWN -1 306 bus_dma_tag_t aac_common_dmat; /* common structure 307 * DMA tag */ 308 bus_dmamap_t aac_common_dmamap; /* common structure 309 * DMA map */ 310 struct aac_common *aac_common; 311 u_int32_t aac_common_busaddr; 312 struct aac_interface aac_if; 313 314 /* command/fib resources */ 315 bus_dma_tag_t aac_fib_dmat; /* DMA tag for allocing FIBs */ 316 TAILQ_HEAD(,aac_fibmap) aac_fibmap_tqh; 317 u_int total_fibs; 318 struct aac_command *aac_commands; 319 320 /* command management */ 321 TAILQ_HEAD(,aac_command) aac_free; /* command structures 322 * available for reuse */ 323 TAILQ_HEAD(,aac_command) aac_ready; /* commands on hold for 324 * controller resources */ 325 TAILQ_HEAD(,aac_command) aac_busy; 326 struct bio_queue_head aac_bioq; 327 struct aac_queue_table *aac_queues; 328 struct aac_queue_entry *aac_qentries[AAC_QUEUE_COUNT]; 329 330 struct aac_qstat aac_qstat[AACQ_COUNT]; /* queue statistics */ 331 332 /* connected containters */ 333 TAILQ_HEAD(,aac_container) aac_container_tqh; 334 aac_lock_t aac_container_lock; 335 336 /* Protect the sync fib */ 337 #define AAC_SYNC_LOCK_FORCE (1 << 0) 338 aac_lock_t aac_sync_lock; 339 340 aac_lock_t aac_io_lock; 341 342 /* delayed activity infrastructure */ 343 struct task aac_task_complete; /* deferred-completion 344 * task */ 345 struct intr_config_hook aac_ich; 346 347 /* management interface */ 348 dev_t aac_dev_t; 349 aac_lock_t aac_aifq_lock; 350 struct aac_aif_command aac_aifq[AAC_AIFQ_LENGTH]; 351 int aac_aifq_head; 352 int aac_aifq_tail; 353 struct selinfo rcv_select; 354 struct proc *aifthread; 355 int aifflags; 356 #define AAC_AIFFLAGS_RUNNING (1 << 0) 357 #define AAC_AIFFLAGS_AIF (1 << 1) 358 #define AAC_AIFFLAGS_EXIT (1 << 2) 359 #define AAC_AIFFLAGS_EXITED (1 << 3) 360 #define AAC_AIFFLAGS_PRINTF (1 << 4) 361 #define AAC_AIFFLAGS_ALLOCFIBS (1 << 5) 362 #define AAC_AIFFLAGS_PENDING (AAC_AIFFLAGS_AIF | AAC_AIFFLAGS_PRINTF | \ 363 AAC_AIFFLAGS_ALLOCFIBS) 364 u_int32_t flags; 365 #define AAC_FLAGS_PERC2QC (1 << 0) 366 #define AAC_FLAGS_ENABLE_CAM (1 << 1) /* No SCSI passthrough */ 367 #define AAC_FLAGS_CAM_NORESET (1 << 2) /* Fake SCSI resets */ 368 #define AAC_FLAGS_CAM_PASSONLY (1 << 3) /* Only create pass devices */ 369 #define AAC_FLAGS_SG_64BIT (1 << 4) /* Use 64-bit S/G addresses */ 370 #define AAC_FLAGS_4GB_WINDOW (1 << 5) /* Device can access host mem 371 * 2GB-4GB range */ 372 #define AAC_FLAGS_NO4GB (1 << 6) /* Can't access host mem >2GB */ 373 #define AAC_FLAGS_256FIBS (1 << 7) /* Can only do 256 commands */ 374 #define AAC_FLAGS_BROKEN_MEMMAP (1 << 8) /* Broken HostPhysMemPages */ 375 376 u_int32_t supported_options; 377 int aac_max_fibs; 378 u_int32_t scsi_method_id; 379 TAILQ_HEAD(,aac_sim) aac_sim_tqh; 380 }; 381 382 383 /* 384 * Public functions 385 */ 386 extern void aac_free(struct aac_softc *sc); 387 extern int aac_attach(struct aac_softc *sc); 388 extern int aac_detach(device_t dev); 389 extern int aac_shutdown(device_t dev); 390 extern int aac_suspend(device_t dev); 391 extern int aac_resume(device_t dev); 392 extern void aac_intr(void *arg); 393 extern void aac_submit_bio(struct bio *bp); 394 extern void aac_biodone(struct bio *bp); 395 extern void aac_startio(struct aac_softc *sc); 396 extern int aac_alloc_command(struct aac_softc *sc, 397 struct aac_command **cmp); 398 extern void aac_release_command(struct aac_command *cm); 399 extern int aac_alloc_sync_fib(struct aac_softc *sc, 400 struct aac_fib **fib, int flags); 401 extern void aac_release_sync_fib(struct aac_softc *sc); 402 extern int aac_sync_fib(struct aac_softc *sc, u_int32_t command, 403 u_int32_t xferstate, struct aac_fib *fib, 404 u_int16_t datasize); 405 406 /* 407 * Debugging levels: 408 * 0 - quiet, only emit warnings 409 * 1 - noisy, emit major function points and things done 410 * 2 - extremely noisy, emit trace items in loops, etc. 411 */ 412 #ifdef AAC_DEBUG 413 # define debug(level, fmt, args...) \ 414 do { \ 415 if (level <=AAC_DEBUG) printf("%s: " fmt "\n", __func__ , ##args); \ 416 } while (0) 417 # define debug_called(level) \ 418 do { \ 419 if (level <= AAC_DEBUG) printf("%s: called\n", __func__); \ 420 } while (0) 421 422 extern void aac_print_queues(struct aac_softc *sc); 423 extern void aac_panic(struct aac_softc *sc, char *reason); 424 extern void aac_print_fib(struct aac_softc *sc, struct aac_fib *fib, 425 const char *caller); 426 extern void aac_print_aif(struct aac_softc *sc, 427 struct aac_aif_command *aif); 428 429 #define AAC_PRINT_FIB(sc, fib) aac_print_fib(sc, fib, __func__) 430 431 #else 432 # define debug(level, fmt, args...) 433 # define debug_called(level) 434 435 # define aac_print_queues(sc) 436 # define aac_panic(sc, reason) 437 438 # define AAC_PRINT_FIB(sc, fib) 439 # define aac_print_aif(sc, aac_aif_command) 440 #endif 441 442 struct aac_code_lookup { 443 char *string; 444 u_int32_t code; 445 }; 446 447 /* 448 * Queue primitives for driver queues. 449 */ 450 #define AACQ_ADD(sc, qname) \ 451 do { \ 452 struct aac_qstat *qs; \ 453 \ 454 qs = &(sc)->aac_qstat[qname]; \ 455 \ 456 qs->q_length++; \ 457 if (qs->q_length > qs->q_max) \ 458 qs->q_max = qs->q_length; \ 459 } while (0) 460 461 #define AACQ_REMOVE(sc, qname) (sc)->aac_qstat[qname].q_length-- 462 #define AACQ_INIT(sc, qname) \ 463 do { \ 464 sc->aac_qstat[qname].q_length = 0; \ 465 sc->aac_qstat[qname].q_max = 0; \ 466 } while (0) 467 468 469 #define AACQ_COMMAND_QUEUE(name, index) \ 470 static __inline void \ 471 aac_initq_ ## name (struct aac_softc *sc) \ 472 { \ 473 TAILQ_INIT(&sc->aac_ ## name); \ 474 AACQ_INIT(sc, index); \ 475 } \ 476 static __inline void \ 477 aac_enqueue_ ## name (struct aac_command *cm) \ 478 { \ 479 if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \ 480 printf("command %p is on another queue, flags = %#x\n", \ 481 cm, cm->cm_flags); \ 482 panic("command is on another queue"); \ 483 } \ 484 TAILQ_INSERT_TAIL(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 485 cm->cm_flags |= AAC_ON_ ## index; \ 486 AACQ_ADD(cm->cm_sc, index); \ 487 } \ 488 static __inline void \ 489 aac_requeue_ ## name (struct aac_command *cm) \ 490 { \ 491 if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \ 492 printf("command %p is on another queue, flags = %#x\n", \ 493 cm, cm->cm_flags); \ 494 panic("command is on another queue"); \ 495 } \ 496 TAILQ_INSERT_HEAD(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 497 cm->cm_flags |= AAC_ON_ ## index; \ 498 AACQ_ADD(cm->cm_sc, index); \ 499 } \ 500 static __inline struct aac_command * \ 501 aac_dequeue_ ## name (struct aac_softc *sc) \ 502 { \ 503 struct aac_command *cm; \ 504 \ 505 if ((cm = TAILQ_FIRST(&sc->aac_ ## name)) != NULL) { \ 506 if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \ 507 printf("command %p not in queue, flags = %#x, " \ 508 "bit = %#x\n", cm, cm->cm_flags, \ 509 AAC_ON_ ## index); \ 510 panic("command not in queue"); \ 511 } \ 512 TAILQ_REMOVE(&sc->aac_ ## name, cm, cm_link); \ 513 cm->cm_flags &= ~AAC_ON_ ## index; \ 514 AACQ_REMOVE(sc, index); \ 515 } \ 516 return(cm); \ 517 } \ 518 static __inline void \ 519 aac_remove_ ## name (struct aac_command *cm) \ 520 { \ 521 if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \ 522 printf("command %p not in queue, flags = %#x, " \ 523 "bit = %#x\n", cm, cm->cm_flags, \ 524 AAC_ON_ ## index); \ 525 panic("command not in queue"); \ 526 } \ 527 TAILQ_REMOVE(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 528 cm->cm_flags &= ~AAC_ON_ ## index; \ 529 AACQ_REMOVE(cm->cm_sc, index); \ 530 } \ 531 struct hack 532 533 AACQ_COMMAND_QUEUE(free, AACQ_FREE); 534 AACQ_COMMAND_QUEUE(ready, AACQ_READY); 535 AACQ_COMMAND_QUEUE(busy, AACQ_BUSY); 536 537 /* 538 * outstanding bio queue 539 */ 540 static __inline void 541 aac_initq_bio(struct aac_softc *sc) 542 { 543 bioq_init(&sc->aac_bioq); 544 AACQ_INIT(sc, AACQ_BIO); 545 } 546 547 static __inline void 548 aac_enqueue_bio(struct aac_softc *sc, struct bio *bp) 549 { 550 bioq_insert_tail(&sc->aac_bioq, bp); 551 AACQ_ADD(sc, AACQ_BIO); 552 } 553 554 static __inline struct bio * 555 aac_dequeue_bio(struct aac_softc *sc) 556 { 557 struct bio *bp; 558 559 if ((bp = bioq_first(&sc->aac_bioq)) != NULL) { 560 bioq_remove(&sc->aac_bioq, bp); 561 AACQ_REMOVE(sc, AACQ_BIO); 562 } 563 return(bp); 564 } 565 566 static __inline void 567 aac_print_printf(struct aac_softc *sc) 568 { 569 /* 570 * XXX We have the ability to read the length of the printf string 571 * from out of the mailboxes. 572 */ 573 device_printf(sc->aac_dev, "**Monitor** %.*s", AAC_PRINTF_BUFSIZE, 574 sc->aac_common->ac_printf); 575 AAC_QNOTIFY(sc, AAC_DB_PRINTF); 576 } 577