xref: /dragonfly/sys/dev/raid/aac/aacvar.h (revision 984263bc)
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  */
31 
32 /*
33  * Driver Parameter Definitions
34  */
35 
36 /*
37  * The firmware interface allows for a 16-bit s/g list length.  We limit
38  * ourselves to a reasonable maximum and ensure alignment.
39  */
40 #define AAC_MAXSGENTRIES	64	/* max S/G entries, limit 65535 */
41 
42 /*
43  * We allocate a small set of FIBs for the adapter to use to send us messages.
44  */
45 #define AAC_ADAPTER_FIBS	8
46 
47 /*
48  * FIBs are allocated up-front, and the pool isn't grown.  We should allocate
49  * enough here to let us keep the adapter busy without wasting large amounts
50  * of kernel memory.  The current interface implementation limits us to 512
51  * FIBs queued for the adapter at any one time.
52  */
53 #define AAC_FIB_COUNT		128
54 
55 /*
56  * The controller reports status events in AIFs.  We hang on to a number of
57  * these in order to pass them out to user-space management tools.
58  */
59 #define AAC_AIFQ_LENGTH		64
60 
61 /*
62  * Firmware messages are passed in the printf buffer.
63  */
64 #define AAC_PRINTF_BUFSIZE	256
65 
66 /*
67  * We wait this many seconds for the adapter to come ready if it is still
68  * booting
69  */
70 #define AAC_BOOT_TIMEOUT	(3 * 60)
71 
72 /*
73  * Timeout for immediate commands.
74  */
75 #define AAC_IMMEDIATE_TIMEOUT	30		/* seconds */
76 
77 /*
78  * Timeout for normal commands
79  */
80 #define AAC_CMD_TIMEOUT		30		/* seconds */
81 
82 /*
83  * Rate at which we periodically check for timed out commands and kick the
84  * controller.
85  */
86 #define AAC_PERIODIC_INTERVAL	20		/* seconds */
87 
88 /*
89  * Character device major numbers.
90  */
91 #define AAC_DISK_MAJOR	200
92 
93 /*
94  * Driver Variable Definitions
95  */
96 
97 #if __FreeBSD_version >= 500005
98 # include <sys/taskqueue.h>
99 #endif
100 
101 /*
102  * Per-container data structure
103  */
104 struct aac_container
105 {
106 	struct aac_mntobj		co_mntobj;
107 	device_t			co_disk;
108 	int				co_found;
109 	TAILQ_ENTRY(aac_container)	co_link;
110 };
111 
112 /*
113  * Per-disk structure
114  */
115 struct aac_disk
116 {
117 	device_t			ad_dev;
118 	dev_t				ad_dev_t;
119 	struct aac_softc		*ad_controller;
120 	struct aac_container		*ad_container;
121 	struct disk			ad_disk;
122 	struct devstat			ad_stats;
123 	struct disklabel		ad_label;
124 	int				ad_flags;
125 #define AAC_DISK_OPEN	(1<<0)
126 	int				ad_cylinders;
127 	int				ad_heads;
128 	int				ad_sectors;
129 	u_int32_t			ad_size;
130 	int				unit;
131 };
132 
133 /*
134  * Per-command control structure.
135  */
136 struct aac_command
137 {
138 	TAILQ_ENTRY(aac_command) cm_link;	/* list linkage */
139 
140 	struct aac_softc	*cm_sc;		/* controller that owns us */
141 
142 	struct aac_fib		*cm_fib;	/* FIB associated with this
143 						 * command */
144 	u_int32_t		cm_fibphys;	/* bus address of the FIB */
145 	struct bio		*cm_data;	/* pointer to data in kernel
146 						 * space */
147 	u_int32_t		cm_datalen;	/* data length */
148 	bus_dmamap_t		cm_datamap;	/* DMA map for bio data */
149 	struct aac_sg_table	*cm_sgtable;	/* pointer to s/g table in
150 						 * command */
151 	int			cm_flags;
152 #define AAC_CMD_MAPPED		(1<<0)		/* command has had its data
153 						 * mapped */
154 #define AAC_CMD_DATAIN		(1<<1)		/* command involves data moving
155 						 * from controller to host */
156 #define AAC_CMD_DATAOUT		(1<<2)		/* command involves data moving
157 						 * from host to controller */
158 #define AAC_CMD_COMPLETED	(1<<3)		/* command has been completed */
159 #define AAC_CMD_TIMEDOUT	(1<<4)		/* command taken too long */
160 #define AAC_ON_AACQ_FREE	(1<<5)
161 #define AAC_ON_AACQ_READY	(1<<6)
162 #define AAC_ON_AACQ_BUSY	(1<<7)
163 #define AAC_ON_AACQ_COMPLETE	(1<<8)
164 #define AAC_ON_AACQ_MASK	((1<<5)|(1<<6)|(1<<7)|(1<<8))
165 
166 	void			(* cm_complete)(struct aac_command *cm);
167 	void			*cm_private;
168 	time_t			cm_timestamp;	/* command creation time */
169 	int			cm_queue;
170 };
171 
172 /*
173  * We gather a number of adapter-visible items into a single structure.
174  *
175  * The ordering of this strucure may be important; we copy the Linux driver:
176  *
177  * Adapter FIBs
178  * Init struct
179  * Queue headers (Comm Area)
180  * Printf buffer
181  *
182  * In addition, we add:
183  * Sync Fib
184  */
185 struct aac_common {
186 	/* fibs for the controller to send us messages */
187 	struct aac_fib		ac_fibs[AAC_ADAPTER_FIBS];
188 
189 	/* the init structure */
190 	struct aac_adapter_init	ac_init;
191 
192 	/* arena within which the queue structures are kept */
193 	u_int8_t		ac_qbuf[sizeof(struct aac_queue_table) +
194 				AAC_QUEUE_ALIGN];
195 
196 	/* buffer for text messages from the controller */
197 	char		       	ac_printf[AAC_PRINTF_BUFSIZE];
198 
199 	/* fib for synchronous commands */
200 	struct aac_fib		ac_sync_fib;
201 };
202 
203 /*
204  * Interface operations
205  */
206 struct aac_interface
207 {
208 	int	(*aif_get_fwstatus)(struct aac_softc *sc);
209 	void	(*aif_qnotify)(struct aac_softc *sc, int qbit);
210 	int	(*aif_get_istatus)(struct aac_softc *sc);
211 	void	(*aif_clr_istatus)(struct aac_softc *sc, int mask);
212 	void	(*aif_set_mailbox)(struct aac_softc *sc, u_int32_t command,
213 				   u_int32_t arg0, u_int32_t arg1,
214 				   u_int32_t arg2, u_int32_t arg3);
215 	int	(*aif_get_mailbox)(struct aac_softc *sc, int mb);
216 	void	(*aif_set_interrupts)(struct aac_softc *sc, int enable);
217 };
218 extern struct aac_interface	aac_rx_interface;
219 extern struct aac_interface	aac_sa_interface;
220 extern struct aac_interface	aac_fa_interface;
221 
222 #define AAC_GET_FWSTATUS(sc)		((sc)->aac_if.aif_get_fwstatus((sc)))
223 #define AAC_QNOTIFY(sc, qbit)		((sc)->aac_if.aif_qnotify((sc), (qbit)))
224 #define AAC_GET_ISTATUS(sc)		((sc)->aac_if.aif_get_istatus((sc)))
225 #define AAC_CLEAR_ISTATUS(sc, mask)	((sc)->aac_if.aif_clr_istatus((sc), \
226 					(mask)))
227 #define AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3) \
228 	((sc)->aac_if.aif_set_mailbox((sc), (command), (arg0), (arg1), (arg2), \
229 	(arg3)))
230 #define AAC_GET_MAILBOX(sc, mb)		((sc)->aac_if.aif_get_mailbox((sc), \
231 					(mb)))
232 #define	AAC_MASK_INTERRUPTS(sc)		((sc)->aac_if.aif_set_interrupts((sc), \
233 					0))
234 #define AAC_UNMASK_INTERRUPTS(sc)	((sc)->aac_if.aif_set_interrupts((sc), \
235 					1))
236 
237 #define AAC_SETREG4(sc, reg, val)	bus_space_write_4(sc->aac_btag, \
238 					sc->aac_bhandle, reg, val)
239 #define AAC_GETREG4(sc, reg)		bus_space_read_4 (sc->aac_btag, \
240 					sc->aac_bhandle, reg)
241 #define AAC_SETREG2(sc, reg, val)	bus_space_write_2(sc->aac_btag, \
242 					sc->aac_bhandle, reg, val)
243 #define AAC_GETREG2(sc, reg)		bus_space_read_2 (sc->aac_btag, \
244 					sc->aac_bhandle, reg)
245 #define AAC_SETREG1(sc, reg, val)	bus_space_write_1(sc->aac_btag, \
246 					sc->aac_bhandle, reg, val)
247 #define AAC_GETREG1(sc, reg)		bus_space_read_1 (sc->aac_btag, \
248 					sc->aac_bhandle, reg)
249 
250 TAILQ_HEAD(aac_container_tq, aac_container);
251 
252 /* Define the OS version specific locks */
253 #if __FreeBSD_version >= 500005
254 #include <sys/lock.h>
255 #include <sys/mutex.h>
256 typedef struct mtx aac_lock_t;
257 #define AAC_LOCK_INIT(l, s)	mtx_init(l, s, MTX_DEF)
258 #define AAC_LOCK_ACQUIRE(l)	mtx_lock(l)
259 #define AAC_LOCK_RELEASE(l)	mtx_unlock(l)
260 #else
261 typedef struct simplelock aac_lock_t;
262 #define AAC_LOCK_INIT(l, s)	simple_lock_init(l)
263 #define AAC_LOCK_ACQUIRE(l)	simple_lock(l)
264 #define AAC_LOCK_RELEASE(l)	simple_unlock(l)
265 #endif
266 
267 #if __FreeBSD_version >= 500005
268 #include <sys/selinfo.h>
269 #else
270 #include <sys/select.h>
271 #endif
272 
273 /*
274  * Per-controller structure.
275  */
276 struct aac_softc
277 {
278 	/* bus connections */
279 	device_t		aac_dev;
280 	struct resource		*aac_regs_resource;	/* register interface
281 							 * window */
282 	int			aac_regs_rid;		/* resource ID */
283 	bus_space_handle_t	aac_bhandle;		/* bus space handle */
284 	bus_space_tag_t		aac_btag;		/* bus space tag */
285 	bus_dma_tag_t		aac_parent_dmat;	/* parent DMA tag */
286 	bus_dma_tag_t		aac_buffer_dmat;	/* data buffer/command
287 							 * DMA tag */
288 	struct resource		*aac_irq;		/* interrupt */
289 	int			aac_irq_rid;
290 	void			*aac_intr;		/* interrupt handle */
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 	struct aac_fib		*aac_fibs;
317 	bus_dmamap_t		aac_fibmap;
318 	u_int32_t		aac_fibphys;
319 	struct aac_command	aac_command[AAC_FIB_COUNT];
320 
321 	/* command management */
322 	TAILQ_HEAD(,aac_command) aac_free;	/* command structures
323 						 * available for reuse */
324 	TAILQ_HEAD(,aac_command) aac_ready;	/* commands on hold for
325 						 * controller resources */
326 	TAILQ_HEAD(,aac_command) aac_busy;
327 	TAILQ_HEAD(,aac_command) aac_complete;	/* commands which have been
328 						 * returned by the controller */
329 	struct bio_queue_head	aac_bioq;
330 	struct aac_queue_table	*aac_queues;
331 	struct aac_queue_entry	*aac_qentries[AAC_QUEUE_COUNT];
332 
333 	struct aac_qstat	aac_qstat[AACQ_COUNT];	/* queue statistics */
334 
335 	/* connected containters */
336 	struct aac_container_tq	aac_container_tqh;
337 	aac_lock_t		aac_container_lock;
338 
339 	/* Protect the sync fib */
340 #define AAC_SYNC_LOCK_FORCE	(1 << 0)
341 	aac_lock_t		aac_sync_lock;
342 
343 	/* delayed activity infrastructure */
344 #if __FreeBSD_version >= 500005
345 	struct task		aac_task_complete;	/* deferred-completion
346 							 * task */
347 #endif
348 	struct intr_config_hook	aac_ich;
349 
350 	/* management interface */
351 	dev_t			aac_dev_t;
352 	aac_lock_t		aac_aifq_lock;
353 	struct aac_aif_command	aac_aifq[AAC_AIFQ_LENGTH];
354 	int			aac_aifq_head;
355 	int			aac_aifq_tail;
356 	struct selinfo		rcv_select;
357 	struct proc		*aifthread;
358 	int			aifflags;
359 #define AAC_AIFFLAGS_RUNNING	(1 << 0)
360 #define AAC_AIFFLAGS_PENDING	(1 << 1)
361 #define	AAC_AIFFLAGS_EXIT	(1 << 2)
362 #define AAC_AIFFLAGS_EXITED	(1 << 3)
363 	u_int32_t		flags;
364 #define AAC_FLAGS_PERC2QC	(1 << 0)
365 #define	AAC_FLAGS_ENABLE_CAM	(1 << 1)	/* No SCSI passthrough */
366 #define	AAC_FLAGS_CAM_NORESET	(1 << 2)	/* Fake SCSI resets */
367 #define	AAC_FLAGS_CAM_PASSONLY	(1 << 3)	/* Only create pass devices */
368 #define	AAC_FLAGS_4GB_WINDOW	(1 << 5)	/* Device can access host mem
369  						 * 2GB-4GB range */
370 #define	AAC_FLAGS_NO4GB		(1 << 6)	/* Can't access host mem >2GB */
371 #define	AAC_FLAGS_256FIBS	(1 << 7)	/* Can only do 256 commands */
372 
373 	u_int32_t		supported_options;
374 	u_int32_t		scsi_method_id;
375 };
376 
377 
378 /*
379  * Public functions
380  */
381 extern void		aac_free(struct aac_softc *sc);
382 extern int		aac_attach(struct aac_softc *sc);
383 extern int		aac_detach(device_t dev);
384 extern int		aac_shutdown(device_t dev);
385 extern int		aac_suspend(device_t dev);
386 extern int		aac_resume(device_t dev);
387 extern void		aac_intr(void *arg);
388 extern devclass_t	aac_devclass;
389 extern void		aac_submit_bio(struct bio *bp);
390 extern void		aac_biodone(struct bio *bp);
391 extern int		aac_dump_enqueue(struct aac_disk *ad, u_int32_t lba,
392 					 void *data, int nblks);
393 extern void		aac_dump_complete(struct aac_softc *sc);
394 extern void		aac_startio(struct aac_softc *sc);
395 extern int		aac_alloc_command(struct aac_softc *sc,
396 					  struct aac_command **cmp);
397 extern void		aac_release_command(struct aac_command *cm);
398 extern int		aac_alloc_sync_fib(struct aac_softc *sc,
399 					 struct aac_fib **fib, int flags);
400 extern void		aac_release_sync_fib(struct aac_softc *sc);
401 extern int		aac_sync_fib(struct aac_softc *sc, u_int32_t command,
402 				     u_int32_t xferstate, struct aac_fib *fib,
403 				     u_int16_t datasize);
404 
405 /*
406  * Debugging levels:
407  *  0 - quiet, only emit warnings
408  *  1 - noisy, emit major function points and things done
409  *  2 - extremely noisy, emit trace items in loops, etc.
410  */
411 #ifdef AAC_DEBUG
412 # define debug(level, fmt, args...)					\
413 	do {								\
414 	if (level <=AAC_DEBUG) printf("%s: " fmt "\n", __FUNCTION__ , ##args); \
415 	} while (0)
416 # define debug_called(level)						\
417 	do {								\
418 	if (level <= AAC_DEBUG) printf(__FUNCTION__ ": called\n");	\
419 	} while (0)
420 
421 extern void	aac_print_queues(struct aac_softc *sc);
422 extern void	aac_panic(struct aac_softc *sc, char *reason);
423 extern void	aac_print_fib(struct aac_softc *sc, struct aac_fib *fib,
424 			      char *caller);
425 extern void	aac_print_aif(struct aac_softc *sc,
426 			      struct aac_aif_command *aif);
427 
428 # define AAC_PRINT_FIB(sc, fib)	aac_print_fib(sc, fib, __FUNCTION__)
429 
430 #else
431 # define debug(level, fmt, args...)
432 # define debug_called(level)
433 
434 # define aac_print_queues(sc)
435 # define aac_panic(sc, reason)
436 
437 # define AAC_PRINT_FIB(sc, fib)
438 # define aac_print_aif(sc, aac_aif_command)
439 #endif
440 
441 struct aac_code_lookup {
442 	char	*string;
443 	u_int32_t	code;
444 };
445 
446 /*
447  * Queue primitives for driver queues.
448  */
449 #define AACQ_ADD(sc, qname)					\
450 	do {							\
451 		struct aac_qstat *qs;				\
452 								\
453 		qs = &(sc)->aac_qstat[qname];			\
454 								\
455 		qs->q_length++;					\
456 		if (qs->q_length > qs->q_max)			\
457 			qs->q_max = qs->q_length;		\
458 	} while (0)
459 
460 #define AACQ_REMOVE(sc, qname)    (sc)->aac_qstat[qname].q_length--
461 #define AACQ_INIT(sc, qname)				\
462 	do {						\
463 		sc->aac_qstat[qname].q_length = 0;	\
464 		sc->aac_qstat[qname].q_max = 0;		\
465 	} while (0)
466 
467 
468 #define AACQ_COMMAND_QUEUE(name, index)					\
469 static __inline void							\
470 aac_initq_ ## name (struct aac_softc *sc)				\
471 {									\
472 	TAILQ_INIT(&sc->aac_ ## name);					\
473 	AACQ_INIT(sc, index);						\
474 }									\
475 static __inline void							\
476 aac_enqueue_ ## name (struct aac_command *cm)				\
477 {									\
478 	int s;								\
479 									\
480 	s = splbio();							\
481 	if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) {			\
482 		printf("command %p is on another queue, flags = %#x\n",	\
483 		       cm, cm->cm_flags);				\
484 		panic("command is on another queue");			\
485 	}								\
486 	TAILQ_INSERT_TAIL(&cm->cm_sc->aac_ ## name, cm, cm_link);	\
487 	cm->cm_flags |= AAC_ON_ ## index;				\
488 	AACQ_ADD(cm->cm_sc, index);					\
489 	splx(s);							\
490 }									\
491 static __inline void							\
492 aac_requeue_ ## name (struct aac_command *cm)				\
493 {									\
494 	int s;								\
495 									\
496 	s = splbio();							\
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 	splx(s);							\
506 }									\
507 static __inline struct aac_command *					\
508 aac_dequeue_ ## name (struct aac_softc *sc)				\
509 {									\
510 	struct aac_command *cm;						\
511 	int s;								\
512 									\
513 	s = splbio();							\
514 	if ((cm = TAILQ_FIRST(&sc->aac_ ## name)) != NULL) {		\
515 		if ((cm->cm_flags & AAC_ON_ ## index) == 0) {		\
516 			printf("command %p not in queue, flags = %#x, "	\
517 		       	       "bit = %#x\n", cm, cm->cm_flags,		\
518 			       AAC_ON_ ## index);			\
519 			panic("command not in queue");			\
520 		}							\
521 		TAILQ_REMOVE(&sc->aac_ ## name, cm, cm_link);		\
522 		cm->cm_flags &= ~AAC_ON_ ## index;			\
523 		AACQ_REMOVE(sc, index);					\
524 	}								\
525 	splx(s);							\
526 	return(cm);							\
527 }									\
528 static __inline void							\
529 aac_remove_ ## name (struct aac_command *cm)				\
530 {									\
531 	int s;								\
532 									\
533 	s = splbio();							\
534 	if ((cm->cm_flags & AAC_ON_ ## index) == 0) {			\
535 		printf("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(&cm->cm_sc->aac_ ## name, cm, cm_link);		\
541 	cm->cm_flags &= ~AAC_ON_ ## index;				\
542 	AACQ_REMOVE(cm->cm_sc, index);					\
543 	splx(s);							\
544 }									\
545 struct hack
546 
547 AACQ_COMMAND_QUEUE(free, AACQ_FREE);
548 AACQ_COMMAND_QUEUE(ready, AACQ_READY);
549 AACQ_COMMAND_QUEUE(busy, AACQ_BUSY);
550 AACQ_COMMAND_QUEUE(complete, AACQ_COMPLETE);
551 
552 /*
553  * outstanding bio queue
554  */
555 static __inline void
556 aac_initq_bio(struct aac_softc *sc)
557 {
558 	bioq_init(&sc->aac_bioq);
559 	AACQ_INIT(sc, AACQ_BIO);
560 }
561 
562 static __inline void
563 aac_enqueue_bio(struct aac_softc *sc, struct bio *bp)
564 {
565 	int s;
566 
567 	s = splbio();
568 	bioq_insert_tail(&sc->aac_bioq, bp);
569 	AACQ_ADD(sc, AACQ_BIO);
570 	splx(s);
571 }
572 
573 static __inline struct bio *
574 aac_dequeue_bio(struct aac_softc *sc)
575 {
576 	int s;
577 	struct bio *bp;
578 
579 	s = splbio();
580 	if ((bp = bioq_first(&sc->aac_bioq)) != NULL) {
581 		bioq_remove(&sc->aac_bioq, bp);
582 		AACQ_REMOVE(sc, AACQ_BIO);
583 	}
584 	splx(s);
585 	return(bp);
586 }
587 
588 static __inline void
589 aac_print_printf(struct aac_softc *sc)
590 {
591 	/*
592 	 * XXX We have the ability to read the length of the printf string
593 	 * from out of the mailboxes.
594 	 */
595 	device_printf(sc->aac_dev, "**Monitor** %.*s", AAC_PRINTF_BUFSIZE,
596 		      sc->aac_common->ac_printf);
597 	AAC_QNOTIFY(sc, AAC_DB_PRINTF);
598 }
599