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: src/sys/dev/aac/aacvar.h,v 1.4.2.7 2003/04/08 13:22:08 scottl Exp $ 30 * $DragonFly: src/sys/dev/raid/aac/aacvar.h,v 1.10 2005/08/08 01:25:31 hmp Exp $ 31 */ 32 33 #include <sys/thread2.h> 34 35 /* 36 * Driver Parameter Definitions 37 */ 38 39 /* 40 * The firmware interface allows for a 16-bit s/g list length. We limit 41 * ourselves to a reasonable maximum and ensure alignment. 42 */ 43 #define AAC_MAXSGENTRIES 64 /* max S/G entries, limit 65535 */ 44 45 /* 46 * We allocate a small set of FIBs for the adapter to use to send us messages. 47 */ 48 #define AAC_ADAPTER_FIBS 8 49 50 /* 51 * FIBs are allocated up-front, and the pool isn't grown. We should allocate 52 * enough here to let us keep the adapter busy without wasting large amounts 53 * of kernel memory. The current interface implementation limits us to 512 54 * FIBs queued for the adapter at any one time. 55 */ 56 #define AAC_FIB_COUNT 128 57 58 /* 59 * The controller reports status events in AIFs. We hang on to a number of 60 * these in order to pass them out to user-space management tools. 61 */ 62 #define AAC_AIFQ_LENGTH 64 63 64 /* 65 * Firmware messages are passed in the printf buffer. 66 */ 67 #define AAC_PRINTF_BUFSIZE 256 68 69 /* 70 * We wait this many seconds for the adapter to come ready if it is still 71 * booting 72 */ 73 #define AAC_BOOT_TIMEOUT (3 * 60) 74 75 /* 76 * Timeout for immediate commands. 77 */ 78 #define AAC_IMMEDIATE_TIMEOUT 30 /* seconds */ 79 80 /* 81 * Timeout for normal commands 82 */ 83 #define AAC_CMD_TIMEOUT 30 /* seconds */ 84 85 /* 86 * Rate at which we periodically check for timed out commands and kick the 87 * controller. 88 */ 89 #define AAC_PERIODIC_INTERVAL 20 /* seconds */ 90 91 /* 92 * Character device major numbers. 93 */ 94 #define AAC_DISK_MAJOR 200 95 96 /* 97 * Driver Variable Definitions 98 */ 99 100 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 101 # include <sys/taskqueue.h> 102 #endif 103 104 /* 105 * Per-container data structure 106 */ 107 struct aac_container 108 { 109 struct aac_mntobj co_mntobj; 110 device_t co_disk; 111 int co_found; 112 TAILQ_ENTRY(aac_container) co_link; 113 }; 114 115 /* 116 * Per-disk structure 117 */ 118 struct aac_disk 119 { 120 device_t ad_dev; 121 dev_t ad_dev_t; 122 struct aac_softc *ad_controller; 123 struct aac_container *ad_container; 124 struct disk ad_disk; 125 struct devstat ad_stats; 126 struct disklabel ad_label; 127 int ad_flags; 128 #define AAC_DISK_OPEN (1<<0) 129 int ad_cylinders; 130 int ad_heads; 131 int ad_sectors; 132 u_int32_t ad_size; 133 int unit; 134 }; 135 136 /* 137 * Per-command control structure. 138 */ 139 struct aac_command 140 { 141 TAILQ_ENTRY(aac_command) cm_link; /* list linkage */ 142 143 struct aac_softc *cm_sc; /* controller that owns us */ 144 145 struct aac_fib *cm_fib; /* FIB associated with this 146 * command */ 147 u_int32_t cm_fibphys; /* bus address of the FIB */ 148 struct buf *cm_data; /* pointer to data in kernel 149 * space */ 150 u_int32_t cm_datalen; /* data length */ 151 bus_dmamap_t cm_datamap; /* DMA map for bio data */ 152 struct aac_sg_table *cm_sgtable; /* pointer to s/g table in 153 * command */ 154 int cm_flags; 155 #define AAC_CMD_MAPPED (1<<0) /* command has had its data 156 * mapped */ 157 #define AAC_CMD_DATAIN (1<<1) /* command involves data moving 158 * from controller to host */ 159 #define AAC_CMD_DATAOUT (1<<2) /* command involves data moving 160 * from host to controller */ 161 #define AAC_CMD_COMPLETED (1<<3) /* command has been completed */ 162 #define AAC_CMD_TIMEDOUT (1<<4) /* command taken too long */ 163 #define AAC_ON_AACQ_FREE (1<<5) 164 #define AAC_ON_AACQ_READY (1<<6) 165 #define AAC_ON_AACQ_BUSY (1<<7) 166 #define AAC_ON_AACQ_COMPLETE (1<<8) 167 #define AAC_ON_AACQ_MASK ((1<<5)|(1<<6)|(1<<7)|(1<<8)) 168 169 void (* cm_complete)(struct aac_command *cm); 170 void *cm_private; 171 time_t cm_timestamp; /* command creation time */ 172 int cm_queue; 173 }; 174 175 /* 176 * We gather a number of adapter-visible items into a single structure. 177 * 178 * The ordering of this strucure may be important; we copy the Linux driver: 179 * 180 * Adapter FIBs 181 * Init struct 182 * Queue headers (Comm Area) 183 * Printf buffer 184 * 185 * In addition, we add: 186 * Sync Fib 187 */ 188 struct aac_common { 189 /* fibs for the controller to send us messages */ 190 struct aac_fib ac_fibs[AAC_ADAPTER_FIBS]; 191 192 /* the init structure */ 193 struct aac_adapter_init ac_init; 194 195 /* arena within which the queue structures are kept */ 196 u_int8_t ac_qbuf[sizeof(struct aac_queue_table) + 197 AAC_QUEUE_ALIGN]; 198 199 /* buffer for text messages from the controller */ 200 char ac_printf[AAC_PRINTF_BUFSIZE]; 201 202 /* fib for synchronous commands */ 203 struct aac_fib ac_sync_fib; 204 }; 205 206 /* 207 * Interface operations 208 */ 209 struct aac_interface 210 { 211 int (*aif_get_fwstatus)(struct aac_softc *sc); 212 void (*aif_qnotify)(struct aac_softc *sc, int qbit); 213 int (*aif_get_istatus)(struct aac_softc *sc); 214 void (*aif_clr_istatus)(struct aac_softc *sc, int mask); 215 void (*aif_set_mailbox)(struct aac_softc *sc, u_int32_t command, 216 u_int32_t arg0, u_int32_t arg1, 217 u_int32_t arg2, u_int32_t arg3); 218 int (*aif_get_mailbox)(struct aac_softc *sc, int mb); 219 void (*aif_set_interrupts)(struct aac_softc *sc, int enable); 220 }; 221 extern struct aac_interface aac_rx_interface; 222 extern struct aac_interface aac_sa_interface; 223 extern struct aac_interface aac_fa_interface; 224 225 #define AAC_GET_FWSTATUS(sc) ((sc)->aac_if.aif_get_fwstatus((sc))) 226 #define AAC_QNOTIFY(sc, qbit) ((sc)->aac_if.aif_qnotify((sc), (qbit))) 227 #define AAC_GET_ISTATUS(sc) ((sc)->aac_if.aif_get_istatus((sc))) 228 #define AAC_CLEAR_ISTATUS(sc, mask) ((sc)->aac_if.aif_clr_istatus((sc), \ 229 (mask))) 230 #define AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3) \ 231 ((sc)->aac_if.aif_set_mailbox((sc), (command), (arg0), (arg1), (arg2), \ 232 (arg3))) 233 #define AAC_GET_MAILBOX(sc, mb) ((sc)->aac_if.aif_get_mailbox((sc), \ 234 (mb))) 235 #define AAC_MASK_INTERRUPTS(sc) ((sc)->aac_if.aif_set_interrupts((sc), \ 236 0)) 237 #define AAC_UNMASK_INTERRUPTS(sc) ((sc)->aac_if.aif_set_interrupts((sc), \ 238 1)) 239 240 #define AAC_SETREG4(sc, reg, val) bus_space_write_4(sc->aac_btag, \ 241 sc->aac_bhandle, reg, val) 242 #define AAC_GETREG4(sc, reg) bus_space_read_4 (sc->aac_btag, \ 243 sc->aac_bhandle, reg) 244 #define AAC_SETREG2(sc, reg, val) bus_space_write_2(sc->aac_btag, \ 245 sc->aac_bhandle, reg, val) 246 #define AAC_GETREG2(sc, reg) bus_space_read_2 (sc->aac_btag, \ 247 sc->aac_bhandle, reg) 248 #define AAC_SETREG1(sc, reg, val) bus_space_write_1(sc->aac_btag, \ 249 sc->aac_bhandle, reg, val) 250 #define AAC_GETREG1(sc, reg) bus_space_read_1 (sc->aac_btag, \ 251 sc->aac_bhandle, reg) 252 253 TAILQ_HEAD(aac_container_tq, aac_container); 254 255 /* Define the OS version specific locks */ 256 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 257 #include <sys/lock.h> 258 #include <sys/mutex.h> 259 typedef struct mtx aac_lock_t; 260 #define AAC_LOCK_INIT(l, s) mtx_init(l, s, MTX_DEF) 261 #define AAC_LOCK_ACQUIRE(l) mtx_lock(l) 262 #define AAC_LOCK_RELEASE(l) mtx_unlock(l) 263 #else 264 typedef struct lwkt_rwlock aac_lock_t; 265 #define AAC_LOCK_INIT(l, s) lwkt_rwlock_init(l) 266 #define AAC_LOCK_ACQUIRE(l) lwkt_exlock(l, "aac") 267 #define AAC_LOCK_RELEASE(l) lwkt_exunlock(l) 268 #endif 269 270 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 271 #include <sys/selinfo.h> 272 #else 273 #include <sys/select.h> 274 #endif 275 276 /* 277 * Per-controller structure. 278 */ 279 struct aac_softc 280 { 281 /* bus connections */ 282 device_t aac_dev; 283 struct callout aac_watchdog; 284 struct resource *aac_regs_resource; /* register interface 285 * window */ 286 int aac_regs_rid; /* resource ID */ 287 bus_space_handle_t aac_bhandle; /* bus space handle */ 288 bus_space_tag_t aac_btag; /* bus space tag */ 289 bus_dma_tag_t aac_parent_dmat; /* parent DMA tag */ 290 bus_dma_tag_t aac_buffer_dmat; /* data buffer/command 291 * DMA tag */ 292 struct resource *aac_irq; /* interrupt */ 293 int aac_irq_rid; 294 void *aac_intr; /* interrupt handle */ 295 296 /* controller features, limits and status */ 297 int aac_state; 298 #define AAC_STATE_SUSPEND (1<<0) 299 #define AAC_STATE_OPEN (1<<1) 300 #define AAC_STATE_INTERRUPTS_ON (1<<2) 301 #define AAC_STATE_AIF_SLEEPER (1<<3) 302 struct FsaRevision aac_revision; 303 304 /* controller hardware interface */ 305 int aac_hwif; 306 #define AAC_HWIF_I960RX 0 307 #define AAC_HWIF_STRONGARM 1 308 #define AAC_HWIF_FALCON 2 309 #define AAC_HWIF_UNKNOWN -1 310 bus_dma_tag_t aac_common_dmat; /* common structure 311 * DMA tag */ 312 bus_dmamap_t aac_common_dmamap; /* common structure 313 * DMA map */ 314 struct aac_common *aac_common; 315 u_int32_t aac_common_busaddr; 316 struct aac_interface aac_if; 317 318 /* command/fib resources */ 319 bus_dma_tag_t aac_fib_dmat; /* DMA tag for allocing FIBs */ 320 struct aac_fib *aac_fibs; 321 bus_dmamap_t aac_fibmap; 322 u_int32_t aac_fibphys; 323 struct aac_command aac_command[AAC_FIB_COUNT]; 324 325 /* command management */ 326 TAILQ_HEAD(,aac_command) aac_free; /* command structures 327 * available for reuse */ 328 TAILQ_HEAD(,aac_command) aac_ready; /* commands on hold for 329 * controller resources */ 330 TAILQ_HEAD(,aac_command) aac_busy; 331 TAILQ_HEAD(,aac_command) aac_complete; /* commands which have been 332 * returned by the controller */ 333 struct buf_queue_head aac_bioq; 334 struct aac_queue_table *aac_queues; 335 struct aac_queue_entry *aac_qentries[AAC_QUEUE_COUNT]; 336 337 struct aac_qstat aac_qstat[AACQ_COUNT]; /* queue statistics */ 338 339 /* connected containters */ 340 struct aac_container_tq aac_container_tqh; 341 aac_lock_t aac_container_lock; 342 343 /* Protect the sync fib */ 344 #define AAC_SYNC_LOCK_FORCE (1 << 0) 345 aac_lock_t aac_sync_lock; 346 347 /* delayed activity infrastructure */ 348 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 349 struct task aac_task_complete; /* deferred-completion 350 * task */ 351 #endif 352 struct intr_config_hook aac_ich; 353 354 /* management interface */ 355 dev_t aac_dev_t; 356 aac_lock_t aac_aifq_lock; 357 struct aac_aif_command aac_aifq[AAC_AIFQ_LENGTH]; 358 int aac_aifq_head; 359 int aac_aifq_tail; 360 struct selinfo rcv_select; 361 struct thread *aifthread; 362 int aifflags; 363 #define AAC_AIFFLAGS_RUNNING (1 << 0) 364 #define AAC_AIFFLAGS_PENDING (1 << 1) 365 #define AAC_AIFFLAGS_EXIT (1 << 2) 366 #define AAC_AIFFLAGS_EXITED (1 << 3) 367 u_int32_t flags; 368 #define AAC_FLAGS_PERC2QC (1 << 0) 369 #define AAC_FLAGS_ENABLE_CAM (1 << 1) /* No SCSI passthrough */ 370 #define AAC_FLAGS_CAM_NORESET (1 << 2) /* Fake SCSI resets */ 371 #define AAC_FLAGS_CAM_PASSONLY (1 << 3) /* Only create pass devices */ 372 #define AAC_FLAGS_4GB_WINDOW (1 << 5) /* Device can access host mem 373 * 2GB-4GB range */ 374 #define AAC_FLAGS_NO4GB (1 << 6) /* Can't access host mem >2GB */ 375 #define AAC_FLAGS_256FIBS (1 << 7) /* Can only do 256 commands */ 376 377 u_int32_t supported_options; 378 u_int32_t scsi_method_id; 379 }; 380 381 382 /* 383 * Public functions 384 */ 385 extern void aac_free(struct aac_softc *sc); 386 extern int aac_attach(struct aac_softc *sc); 387 extern int aac_detach(device_t dev); 388 extern int aac_shutdown(device_t dev); 389 extern int aac_suspend(device_t dev); 390 extern int aac_resume(device_t dev); 391 extern void aac_intr(void *arg); 392 extern devclass_t aac_devclass; 393 extern void aac_submit_bio(struct buf *bp); 394 extern void aac_biodone(struct buf *bp); 395 extern int aac_dump_enqueue(struct aac_disk *ad, u_int32_t lba, 396 void *data, int nblks); 397 extern void aac_dump_complete(struct aac_softc *sc); 398 extern void aac_startio(struct aac_softc *sc); 399 extern int aac_alloc_command(struct aac_softc *sc, 400 struct aac_command **cmp); 401 extern void aac_release_command(struct aac_command *cm); 402 extern int aac_alloc_sync_fib(struct aac_softc *sc, 403 struct aac_fib **fib, int flags); 404 extern void aac_release_sync_fib(struct aac_softc *sc); 405 extern int aac_sync_fib(struct aac_softc *sc, u_int32_t command, 406 u_int32_t xferstate, struct aac_fib *fib, 407 u_int16_t datasize); 408 409 /* 410 * Debugging levels: 411 * 0 - quiet, only emit warnings 412 * 1 - noisy, emit major function points and things done 413 * 2 - extremely noisy, emit trace items in loops, etc. 414 */ 415 #ifdef AAC_DEBUG 416 # define debug(level, fmt, args...) \ 417 do { \ 418 if (level <=AAC_DEBUG) printf("%s: " fmt "\n", __func__ , ##args); \ 419 } while (0) 420 # define debug_called(level) \ 421 do { \ 422 if (level <= AAC_DEBUG) printf(__func__ ": called\n"); \ 423 } while (0) 424 425 extern void aac_print_queues(struct aac_softc *sc); 426 extern void aac_panic(struct aac_softc *sc, char *reason); 427 extern void aac_print_fib(struct aac_softc *sc, struct aac_fib *fib, 428 char *caller); 429 extern void aac_print_aif(struct aac_softc *sc, 430 struct aac_aif_command *aif); 431 432 # define AAC_PRINT_FIB(sc, fib) aac_print_fib(sc, fib, __func__) 433 434 #else 435 # define debug(level, fmt, args...) 436 # define debug_called(level) 437 438 # define aac_print_queues(sc) 439 # define aac_panic(sc, reason) 440 441 # define AAC_PRINT_FIB(sc, fib) 442 # define aac_print_aif(sc, aac_aif_command) 443 #endif 444 445 struct aac_code_lookup { 446 char *string; 447 u_int32_t code; 448 }; 449 450 /* 451 * Queue primitives for driver queues. 452 */ 453 #define AACQ_ADD(sc, qname) \ 454 do { \ 455 struct aac_qstat *qs; \ 456 \ 457 qs = &(sc)->aac_qstat[qname]; \ 458 \ 459 qs->q_length++; \ 460 if (qs->q_length > qs->q_max) \ 461 qs->q_max = qs->q_length; \ 462 } while (0) 463 464 #define AACQ_REMOVE(sc, qname) (sc)->aac_qstat[qname].q_length-- 465 #define AACQ_INIT(sc, qname) \ 466 do { \ 467 sc->aac_qstat[qname].q_length = 0; \ 468 sc->aac_qstat[qname].q_max = 0; \ 469 } while (0) 470 471 472 #define AACQ_COMMAND_QUEUE(name, index) \ 473 static __inline void \ 474 aac_initq_ ## name (struct aac_softc *sc) \ 475 { \ 476 TAILQ_INIT(&sc->aac_ ## name); \ 477 AACQ_INIT(sc, index); \ 478 } \ 479 static __inline void \ 480 aac_enqueue_ ## name (struct aac_command *cm) \ 481 { \ 482 crit_enter(); \ 483 if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \ 484 printf("command %p is on another queue, flags = %#x\n", \ 485 cm, cm->cm_flags); \ 486 panic("command is on another queue"); \ 487 } \ 488 TAILQ_INSERT_TAIL(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 489 cm->cm_flags |= AAC_ON_ ## index; \ 490 AACQ_ADD(cm->cm_sc, index); \ 491 crit_exit(); \ 492 } \ 493 static __inline void \ 494 aac_requeue_ ## name (struct aac_command *cm) \ 495 { \ 496 crit_enter(); \ 497 if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \ 498 printf("command %p is on another queue, flags = %#x\n", \ 499 cm, cm->cm_flags); \ 500 panic("command is on another queue"); \ 501 } \ 502 TAILQ_INSERT_HEAD(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 503 cm->cm_flags |= AAC_ON_ ## index; \ 504 AACQ_ADD(cm->cm_sc, index); \ 505 crit_exit(); \ 506 } \ 507 static __inline struct aac_command * \ 508 aac_dequeue_ ## name (struct aac_softc *sc) \ 509 { \ 510 struct aac_command *cm; \ 511 \ 512 crit_enter(); \ 513 if ((cm = TAILQ_FIRST(&sc->aac_ ## name)) != NULL) { \ 514 if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \ 515 printf("command %p not in queue, flags = %#x, " \ 516 "bit = %#x\n", cm, cm->cm_flags, \ 517 AAC_ON_ ## index); \ 518 panic("command not in queue"); \ 519 } \ 520 TAILQ_REMOVE(&sc->aac_ ## name, cm, cm_link); \ 521 cm->cm_flags &= ~AAC_ON_ ## index; \ 522 AACQ_REMOVE(sc, index); \ 523 } \ 524 crit_exit(); \ 525 return(cm); \ 526 } \ 527 static __inline void \ 528 aac_remove_ ## name (struct aac_command *cm) \ 529 { \ 530 crit_enter(); \ 531 if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \ 532 printf("command %p not in queue, flags = %#x, " \ 533 "bit = %#x\n", cm, cm->cm_flags, \ 534 AAC_ON_ ## index); \ 535 panic("command not in queue"); \ 536 } \ 537 TAILQ_REMOVE(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 538 cm->cm_flags &= ~AAC_ON_ ## index; \ 539 AACQ_REMOVE(cm->cm_sc, index); \ 540 crit_exit(); \ 541 } \ 542 struct hack 543 544 AACQ_COMMAND_QUEUE(free, AACQ_FREE); 545 AACQ_COMMAND_QUEUE(ready, AACQ_READY); 546 AACQ_COMMAND_QUEUE(busy, AACQ_BUSY); 547 AACQ_COMMAND_QUEUE(complete, AACQ_COMPLETE); 548 549 /* 550 * outstanding bio queue 551 */ 552 static __inline void 553 aac_initq_bio(struct aac_softc *sc) 554 { 555 bioq_init(&sc->aac_bioq); 556 AACQ_INIT(sc, AACQ_BIO); 557 } 558 559 static __inline void 560 aac_enqueue_bio(struct aac_softc *sc, struct buf *bp) 561 { 562 crit_enter(); 563 bioq_insert_tail(&sc->aac_bioq, bp); 564 AACQ_ADD(sc, AACQ_BIO); 565 crit_exit(); 566 } 567 568 static __inline struct buf * 569 aac_dequeue_bio(struct aac_softc *sc) 570 { 571 struct buf *bp; 572 573 crit_enter(); 574 if ((bp = bioq_first(&sc->aac_bioq)) != NULL) { 575 bioq_remove(&sc->aac_bioq, bp); 576 AACQ_REMOVE(sc, AACQ_BIO); 577 } 578 crit_exit(); 579 return(bp); 580 } 581 582 static __inline void 583 aac_print_printf(struct aac_softc *sc) 584 { 585 /* 586 * XXX We have the ability to read the length of the printf string 587 * from out of the mailboxes. 588 */ 589 device_printf(sc->aac_dev, "**Monitor** %.*s", AAC_PRINTF_BUFSIZE, 590 sc->aac_common->ac_printf); 591 AAC_QNOTIFY(sc, AAC_DB_PRINTF); 592 } 593