Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/aacvar.h
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1 /* $OpenBSD: aacvar.h,v 1.16 2022/01/09 05:42:37 jsg Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Michael Smith 5 * Copyright (c) 2000 BSDi 6 * Copyright (c) 2000 Niklas Hallqvist 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD: /c/ncvs/src/sys/dev/aac/aacvar.h,v 1.1 2000/09/13 03:20:34 msmith Exp $ 31 */ 32 33 /* 34 * This driver would not have rewritten for OpenBSD if it was not for the 35 * hardware donation from Nocom. I want to thank them for their support. 36 * Of course, credit should go to Mike Smith for the original work he did 37 * in the FreeBSD driver where I found lots of inspiration. 38 * - Niklas Hallqvist 39 */ 40 41 /* Debugging */ 42 // #define AAC_DEBUG 0x0 43 44 #ifdef AAC_DEBUG 45 #define AAC_DPRINTF(mask, args) if (aac_debug & (mask)) printf args 46 #define AAC_D_INTR 0x001 47 #define AAC_D_MISC 0x002 48 #define AAC_D_CMD 0x004 49 #define AAC_D_QUEUE 0x008 50 #define AAC_D_IO 0x010 51 #define AAC_D_IOCTL 0x020 52 #define AAC_D_LOCK 0x040 53 #define AAC_D_THREAD 0x080 54 #define AAC_D_FIB 0x100 55 extern int aac_debug; 56 57 #define AAC_PRINT_FIB(sc, fib) do { \ 58 if (aac_debug & AAC_D_FIB) \ 59 aac_print_fib((sc), (fib), __func__); \ 60 } while (0) 61 #else 62 #define AAC_DPRINTF(mask, args) 63 #define AAC_PRINT_FIB(sc, fib) 64 #endif 65 66 struct aac_code_lookup { 67 char *string; 68 u_int32_t code; 69 }; 70 71 struct aac_softc; 72 73 /* 74 * We allocate a small set of FIBs for the adapter to use to send us messages. 75 */ 76 #define AAC_ADAPTER_FIBS 8 77 78 /* 79 * FIBs are allocated in page-size chunks and can grow up to the 512 80 * limit imposed by the hardware. 81 */ 82 #define AAC_FIB_COUNT (PAGE_SIZE/sizeof(struct aac_fib)) 83 #define AAC_MAX_FIBS 512 84 #define AAC_FIBMAP_SIZE (PAGE_SIZE) 85 86 /* 87 * The controller reports status events in AIFs. We hang on to a number of 88 * these in order to pass them out to user-space management tools. 89 */ 90 #define AAC_AIFQ_LENGTH 64 91 92 /* 93 * Firmware messages are passed in the printf buffer. 94 */ 95 #define AAC_PRINTF_BUFSIZE 256 96 97 /* 98 * We wait this many seconds for the adapter to come ready if it is still 99 * booting. 100 */ 101 #define AAC_BOOT_TIMEOUT (3 * 60) 102 103 /* 104 * Timeout for immediate commands. 105 */ 106 #define AAC_IMMEDIATE_TIMEOUT 30 107 108 /* 109 * Timeout for normal commands 110 */ 111 #define AAC_CMD_TIMEOUT 30 /* seconds */ 112 113 /* 114 * Rate at which we periodically check for timed out commands and kick the 115 * controller. 116 */ 117 #define AAC_PERIODIC_INTERVAL 20 /* seconds */ 118 119 /* 120 * Wait this long for a lost interrupt to get detected. 121 */ 122 #define AAC_WATCH_TIMEOUT 10000 /* 10000 * 1ms = 10s */ 123 124 /* 125 * Delay 20ms after the qnotify in sync operations. Experimentally deduced. 126 */ 127 #define AAC_SYNC_DELAY 20000 128 129 /* 130 * The firmware interface allows for a 16-bit s/g list length. We limit 131 * ourselves to a reasonable maximum and ensure alignment. 132 */ 133 #define AAC_MAXSGENTRIES 64 /* max S/G entries, limit 65535 */ 134 135 /* 136 * We gather a number of adapter-visible items into a single structure. 137 * 138 * The ordering of this structure may be important; we copy the Linux driver: 139 * 140 * Adapter FIBs 141 * Init struct 142 * Queue headers (Comm Area) 143 * Printf buffer 144 * 145 * In addition, we add: 146 * Sync Fib 147 */ 148 struct aac_common { 149 /* fibs for the controller to send us messages */ 150 struct aac_fib ac_fibs[AAC_ADAPTER_FIBS]; 151 152 /* the init structure */ 153 struct aac_adapter_init ac_init; 154 155 /* arena within which the queue structures are kept */ 156 u_int8_t ac_qbuf[sizeof(struct aac_queue_table) + AAC_QUEUE_ALIGN]; 157 158 /* buffer for text messages from the controller */ 159 char ac_printf[AAC_PRINTF_BUFSIZE]; 160 161 /* fib for synchronous commands */ 162 struct aac_fib ac_sync_fib; 163 }; 164 #define AAC_COMMON_ALLOCSIZE (8192 + sizeof(struct aac_common)) 165 166 /* 167 * Interface operations 168 */ 169 struct aac_interface { 170 int (*aif_get_fwstatus)(struct aac_softc *); 171 void (*aif_qnotify)(struct aac_softc *, int); 172 int (*aif_get_istatus)(struct aac_softc *); 173 void (*aif_set_istatus)(struct aac_softc *, int); 174 void (*aif_set_mailbox)(struct aac_softc *, u_int32_t, 175 u_int32_t, u_int32_t, u_int32_t, u_int32_t); 176 int (*aif_get_mailbox)(struct aac_softc *, int mb); 177 void (*aif_set_interrupts)(struct aac_softc *, int); 178 }; 179 extern struct aac_interface aac_fa_interface; 180 extern struct aac_interface aac_sa_interface; 181 extern struct aac_interface aac_rx_interface; 182 extern struct aac_interface aac_rkt_interface; 183 184 #define AAC_GET_FWSTATUS(sc) ((sc)->aac_if.aif_get_fwstatus(sc)) 185 #define AAC_QNOTIFY(sc, qbit) \ 186 ((sc)->aac_if.aif_qnotify((sc), (qbit))) 187 #define AAC_GET_ISTATUS(sc) ((sc)->aac_if.aif_get_istatus(sc)) 188 #define AAC_CLEAR_ISTATUS(sc, mask) \ 189 ((sc)->aac_if.aif_set_istatus((sc), (mask))) 190 #define AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3) \ 191 do { \ 192 ((sc)->aac_if.aif_set_mailbox((sc), (command), (arg0), \ 193 (arg1), (arg2), (arg3))); \ 194 } while(0) 195 #define AAC_GET_MAILBOX(sc, mb) \ 196 ((sc)->aac_if.aif_get_mailbox(sc, (mb))) 197 #define AAC_MASK_INTERRUPTS(sc) \ 198 ((sc)->aac_if.aif_set_interrupts((sc), 0)) 199 #define AAC_UNMASK_INTERRUPTS(sc) \ 200 ((sc)->aac_if.aif_set_interrupts((sc), 1)) 201 202 #define AAC_SETREG4(sc, reg, val) \ 203 bus_space_write_4((sc)->aac_memt, (sc)->aac_memh, (reg), (val)) 204 #define AAC_GETREG4(sc, reg) \ 205 bus_space_read_4((sc)->aac_memt, (sc)->aac_memh, (reg)) 206 #define AAC_SETREG2(sc, reg, val) \ 207 bus_space_write_2((sc)->aac_memt, (sc)->aac_memh, (reg), (val)) 208 #define AAC_GETREG2(sc, reg) \ 209 bus_space_read_2((sc)->aac_memt, (sc)->aac_memh, (reg)) 210 #define AAC_SETREG1(sc, reg, val) \ 211 bus_space_write_1((sc)->aac_memt, (sc)->aac_memh, (reg), (val)) 212 #define AAC_GETREG1(sc, reg) \ 213 bus_space_read_1((sc)->aac_memt, (sc)->aac_memh, (reg)) 214 215 /* Define the OS version specific locks */ 216 typedef struct rwlock aac_lock_t; 217 #define AAC_LOCK_INIT(l, s) do { \ 218 rw_init((l), "aaclock"); \ 219 AAC_DPRINTF(AAC_D_LOCK, ("%s: init lock @%s: %d\n", \ 220 sc->aac_dev.dv_xname, __FUNCTION__, __LINE__)); \ 221 } while (0) 222 223 #define AAC_LOCK_ACQUIRE(l) do { \ 224 AAC_DPRINTF(AAC_D_LOCK, ("%s: lock @%s: %d\n", \ 225 sc->aac_dev.dv_xname, __FUNCTION__, __LINE__)); \ 226 rw_enter_write((l)); \ 227 } while (0) 228 229 #define AAC_LOCK_RELEASE(l) do { \ 230 rw_exit_write((l)); \ 231 AAC_DPRINTF(AAC_D_LOCK, ("%s: unlock @%s: %d\n", \ 232 sc->aac_dev.dv_xname, __FUNCTION__, __LINE__)); \ 233 } while (0) 234 235 /* 236 * Per-container data structure 237 */ 238 struct aac_container 239 { 240 struct aac_mntobj co_mntobj; 241 int co_found; 242 TAILQ_ENTRY(aac_container) co_link; 243 }; 244 245 /* 246 * A command control block, one for each corresponding command index of the 247 * controller. 248 */ 249 struct aac_command 250 { 251 TAILQ_ENTRY(aac_command) cm_link; /* list linkage */ 252 253 struct aac_softc *cm_sc; /* controller that owns us */ 254 255 struct aac_fib *cm_fib; /* FIB for this command */ 256 bus_addr_t cm_fibphys; /* bus address of the FIB */ 257 void *cm_data; 258 size_t cm_datalen; 259 bus_dmamap_t cm_datamap; 260 struct aac_sg_table *cm_sgtable; /* pointer to s/g table */ 261 262 u_int cm_flags; 263 #define AAC_CMD_MAPPED (1<<0) /* command has had its data mapped */ 264 #define AAC_CMD_DATAIN (1<<1) /* command involves data moving 265 * from controller to host */ 266 #define AAC_CMD_DATAOUT (1<<2) /* command involves data moving 267 * from host to controller */ 268 #define AAC_CMD_COMPLETED (1<<3) /* command has been completed */ 269 #define AAC_CMD_TIMEDOUT (1<<4) /* command taken too long */ 270 #define AAC_ON_AACQ_FREE (1<<5) 271 #define AAC_ON_AACQ_READY (1<<6) 272 #define AAC_ON_AACQ_BUSY (1<<7) 273 #define AAC_ON_AACQ_BIO (1<<8) 274 #define AAC_ON_AACQ_MASK ((1<<5)|(1<<6)|(1<<7)|(1<<8)) 275 #define AAC_QUEUE_FRZN (1<<9) /* Freeze the processing of 276 * commands on the queue. */ 277 #define AAC_ACF_WATCHDOG (1<<10) 278 279 void (*cm_complete)(struct aac_command *); 280 void *cm_private; 281 u_int32_t cm_blkno; 282 u_int32_t cm_bcount; 283 time_t cm_timestamp; /* command creation time */ 284 int cm_queue; 285 int cm_index; 286 }; 287 288 struct aac_fibmap { 289 TAILQ_ENTRY(aac_fibmap) fm_link; /* list linkage */ 290 struct aac_fib *aac_fibs; 291 bus_dmamap_t aac_fibmap; 292 bus_dma_segment_t aac_seg; 293 int aac_nsegs; 294 struct aac_command *aac_commands; 295 }; 296 297 /* 298 * Command queue statistics 299 */ 300 #define AACQ_FREE 0 301 #define AACQ_BIO 1 302 #define AACQ_READY 2 303 #define AACQ_BUSY 3 304 #define AACQ_COUNT 4 /* total number of queues */ 305 306 struct aac_qstat { 307 u_int32_t q_length; 308 u_int32_t q_max; 309 }; 310 311 /* 312 * Per-controller structure. 313 */ 314 struct aac_softc 315 { 316 struct device aac_dev; 317 void *aac_ih; 318 319 bus_space_tag_t aac_memt; 320 bus_space_handle_t aac_memh; 321 bus_dma_tag_t aac_dmat; /* parent DMA tag */ 322 323 /* controller features, limits and status */ 324 int aac_state; 325 #define AAC_STATE_SUSPEND (1<<0) 326 #define AAC_STATE_OPEN (1<<1) 327 #define AAC_STATE_INTERRUPTS_ON (1<<2) 328 #define AAC_STATE_AIF_SLEEPER (1<<3) 329 struct FsaRevision aac_revision; 330 331 int aac_hwif; /* controller hardware interface */ 332 #define AAC_HWIF_I960RX 0 333 #define AAC_HWIF_STRONGARM 1 334 #define AAC_HWIF_FALCON 2 335 #define AAC_HWIF_RKT 3 336 #define AAC_HWIF_UNKNOWN -1 337 338 struct aac_common *aac_common; 339 bus_dmamap_t aac_common_map; 340 u_int32_t aac_common_busaddr; 341 struct aac_interface aac_if; 342 343 /* command/fib resources */ 344 TAILQ_HEAD(,aac_fibmap) aac_fibmap_tqh; 345 u_int total_fibs; 346 struct aac_command *aac_commands; 347 struct scsi_iopool aac_iopool; 348 349 /* command management */ 350 struct mutex aac_free_mtx; 351 TAILQ_HEAD(,aac_command) aac_free; /* command structures 352 * available for reuse */ 353 TAILQ_HEAD(,aac_command) aac_ready; /* commands on hold for 354 * controller resources */ 355 TAILQ_HEAD(,aac_command) aac_busy; 356 TAILQ_HEAD(,aac_command) aac_bio; 357 358 /* command management */ 359 struct aac_queue_table *aac_queues; 360 struct aac_queue_entry *aac_qentries[AAC_QUEUE_COUNT]; 361 362 struct aac_qstat aac_qstat[AACQ_COUNT]; /* queue statistics */ 363 364 /* connected containers */ 365 TAILQ_HEAD(,aac_container) aac_container_tqh; 366 aac_lock_t aac_container_lock; 367 368 /* Protect the sync fib */ 369 #define AAC_SYNC_LOCK_FORCE (1 << 0) 370 aac_lock_t aac_sync_lock; 371 372 aac_lock_t aac_io_lock; 373 374 struct { 375 u_int8_t hd_present; 376 u_int8_t hd_is_logdrv; 377 u_int8_t hd_is_arraydrv; 378 u_int8_t hd_is_master; 379 u_int8_t hd_is_parity; 380 u_int8_t hd_is_hotfix; 381 u_int8_t hd_master_no; 382 u_int8_t hd_lock; 383 u_int8_t hd_heads; 384 u_int8_t hd_secs; 385 u_int16_t hd_devtype; 386 u_int32_t hd_size; 387 u_int8_t hd_ldr_no; 388 u_int8_t hd_rw_attribs; 389 u_int32_t hd_start_sec; 390 } aac_hdr[AAC_MAX_CONTAINERS]; 391 int aac_container_count; 392 393 /* management interface */ 394 aac_lock_t aac_aifq_lock; 395 struct aac_aif_command aac_aifq[AAC_AIFQ_LENGTH]; 396 int aac_aifq_head; 397 int aac_aifq_tail; 398 struct selinfo aac_select; 399 struct proc *aifthread; 400 int aifflags; 401 #define AAC_AIFFLAGS_RUNNING (1 << 0) 402 #define AAC_AIFFLAGS_AIF (1 << 1) 403 #define AAC_AIFFLAGS_EXIT (1 << 2) 404 #define AAC_AIFFLAGS_EXITED (1 << 3) 405 #define AAC_AIFFLAGS_COMPLETE (1 << 4) 406 #define AAC_AIFFLAGS_PRINTF (1 << 5) 407 #define AAC_AIFFLAGS_PENDING (AAC_AIFFLAGS_AIF | AAC_AIFFLAGS_COMPLETE | \ 408 AAC_AIFFLAGS_PRINTF) 409 410 u_int32_t flags; 411 #define AAC_FLAGS_PERC2QC (1 << 0) 412 #define AAC_FLAGS_ENABLE_CAM (1 << 1) /* No SCSI passthrough */ 413 #define AAC_FLAGS_CAM_NORESET (1 << 2) /* Fake SCSI resets */ 414 #define AAC_FLAGS_CAM_PASSONLY (1 << 3) /* Only create pass devices */ 415 #define AAC_FLAGS_SG_64BIT (1 << 4) /* Use 64-bit S/G addresses */ 416 #define AAC_FLAGS_4GB_WINDOW (1 << 5) /* Device can access host mem 417 * 2GB-4GB range */ 418 #define AAC_FLAGS_NO4GB (1 << 6) /* Can't access host mem >2GB*/ 419 #define AAC_FLAGS_256FIBS (1 << 7) /* Can only do 256 commands */ 420 #define AAC_FLAGS_BROKEN_MEMMAP (1 << 8) /* Broken HostPhysMemPages */ 421 422 u_int32_t supported_options; 423 int aac_max_fibs; 424 void *aac_sdh; 425 }; 426 427 int aac_attach(struct aac_softc *); 428 int aac_intr(void *); 429 430 /* These all require correctly aligned buffers */ 431 static __inline__ void 432 aac_enc16(addr, value) 433 u_int8_t *addr; 434 u_int16_t value; 435 { 436 *(u_int16_t *)addr = htole16(value); 437 } 438 439 static __inline__ void 440 aac_enc32(addr, value) 441 u_int8_t *addr; 442 u_int32_t value; 443 { 444 *(u_int32_t *)addr = htole32(value); 445 } 446 447 static __inline__ u_int16_t 448 aac_dec16(addr) 449 u_int8_t *addr; 450 { 451 return letoh16(*(u_int16_t *)addr); 452 } 453 454 static __inline__ u_int32_t 455 aac_dec32(addr) 456 u_int8_t *addr; 457 { 458 return letoh32(*(u_int32_t *)addr); 459 } 460 461 /* Declarations copied from aac.c */ 462 #ifdef AAC_DEBUG 463 void aac_print_fib(struct aac_softc *, struct aac_fib *, const char *); 464 void aac_print_aif(struct aac_softc *, struct aac_aif_command *); 465 #endif 466 void aac_handle_aif(struct aac_softc *, struct aac_fib *); 467 468 469 470 471 472 /* 473 * Queue primitives for driver queues. 474 */ 475 #define AACQ_ADD(sc, qname) \ 476 do { \ 477 struct aac_qstat *qs; \ 478 \ 479 qs = &(sc)->aac_qstat[qname]; \ 480 \ 481 qs->q_length++; \ 482 if (qs->q_length > qs->q_max) \ 483 qs->q_max = qs->q_length; \ 484 } while (0) 485 486 #define AACQ_REMOVE(sc, qname) (sc)->aac_qstat[qname].q_length-- 487 #define AACQ_INIT(sc, qname) \ 488 do { \ 489 sc->aac_qstat[qname].q_length = 0; \ 490 sc->aac_qstat[qname].q_max = 0; \ 491 } while (0) 492 493 494 #define AACQ_COMMAND_QUEUE(name, index) \ 495 static __inline void \ 496 aac_initq_ ## name (struct aac_softc *sc) \ 497 { \ 498 TAILQ_INIT(&sc->aac_ ## name); \ 499 AACQ_INIT(sc, index); \ 500 } \ 501 static __inline void \ 502 aac_enqueue_ ## name (struct aac_command *cm) \ 503 { \ 504 AAC_DPRINTF(AAC_D_CMD, (": enqueue " #name)); \ 505 if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \ 506 printf("command %p is on another queue, flags = %#x\n", \ 507 cm, cm->cm_flags); \ 508 panic("command is on another queue"); \ 509 } \ 510 TAILQ_INSERT_TAIL(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 511 cm->cm_flags |= AAC_ON_ ## index; \ 512 AACQ_ADD(cm->cm_sc, index); \ 513 } \ 514 static __inline void \ 515 aac_requeue_ ## name (struct aac_command *cm) \ 516 { \ 517 AAC_DPRINTF(AAC_D_CMD, (": requeue " #name)); \ 518 if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \ 519 printf("command %p is on another queue, flags = %#x\n", \ 520 cm, cm->cm_flags); \ 521 panic("command is on another queue"); \ 522 } \ 523 TAILQ_INSERT_HEAD(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 524 cm->cm_flags |= AAC_ON_ ## index; \ 525 AACQ_ADD(cm->cm_sc, index); \ 526 } \ 527 static __inline struct aac_command * \ 528 aac_dequeue_ ## name (struct aac_softc *sc) \ 529 { \ 530 struct aac_command *cm; \ 531 \ 532 if ((cm = TAILQ_FIRST(&sc->aac_ ## name)) != NULL) { \ 533 AAC_DPRINTF(AAC_D_CMD, (": dequeue " #name)); \ 534 if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \ 535 printf("dequeue - command %p not in queue, flags = %#x, " \ 536 "bit = %#x\n", cm, cm->cm_flags, \ 537 AAC_ON_ ## index); \ 538 panic("command not in queue"); \ 539 } \ 540 TAILQ_REMOVE(&sc->aac_ ## name, cm, cm_link); \ 541 cm->cm_flags &= ~AAC_ON_ ## index; \ 542 AACQ_REMOVE(sc, index); \ 543 } \ 544 return(cm); \ 545 } \ 546 static __inline void \ 547 aac_remove_ ## name (struct aac_command *cm) \ 548 { \ 549 AAC_DPRINTF(AAC_D_CMD, (": remove " #name)); \ 550 if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \ 551 printf("remove - command %p not in queue, flags = %#x, " \ 552 "bit = %#x\n", cm, cm->cm_flags, \ 553 AAC_ON_ ## index); \ 554 panic("command not in queue"); \ 555 } \ 556 TAILQ_REMOVE(&cm->cm_sc->aac_ ## name, cm, cm_link); \ 557 cm->cm_flags &= ~AAC_ON_ ## index; \ 558 AACQ_REMOVE(cm->cm_sc, index); \ 559 } \ 560 struct hack 561 562 AACQ_COMMAND_QUEUE(free, AACQ_FREE); 563 AACQ_COMMAND_QUEUE(ready, AACQ_READY); 564 AACQ_COMMAND_QUEUE(busy, AACQ_BUSY); 565 AACQ_COMMAND_QUEUE(bio, AACQ_BIO); 566 567 static __inline void 568 aac_print_printf(struct aac_softc *sc) 569 { 570 /* 571 * XXX We have the ability to read the length of the printf string 572 * from out of the mailboxes. 573 */ 574 printf("** %s: %.*s", sc->aac_dev.dv_xname, AAC_PRINTF_BUFSIZE, 575 sc->aac_common->ac_printf); 576 sc->aac_common->ac_printf[0] = 0; 577 AAC_QNOTIFY(sc, AAC_DB_PRINTF); 578 }
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