Change the kernel dev_t, representing a pointer to a specinfo structure,
[dragonfly.git] / sys / dev / raid / aac / aacvar.h
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 1.14 2006/09/10 01:26:35 dillon 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         cdev_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 lock aac_lock_t;
265 #define AAC_LOCK_INIT(l, s)     lockinit(l, "aac", 0, 0)
266 #define AAC_LOCK_ACQUIRE(l)     lockmgr(l, LK_EXCLUSIVE|LK_RETRY)
267 #define AAC_LOCK_RELEASE(l)     lockmgr(l, LK_RELEASE)
268 #endif
269
270 #include <sys/selinfo.h>
271
272 /*
273  * Per-controller structure.
274  */
275 struct aac_softc 
276 {
277         /* bus connections */
278         device_t                aac_dev;
279         struct callout          aac_watchdog;
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 defined(__FreeBSD__) && __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         cdev_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 thread           *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 aac_disk *ad, struct bio *bio);
390 extern void             aac_biodone(struct bio *bio, const char *code);
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", __func__ , ##args); \
415         } while (0)
416 # define debug_called(level)                                            \
417         do {                                                            \
418         if (level <= AAC_DEBUG) printf(__func__ ": 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, __func__)
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         crit_enter();                                                   \
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         crit_exit();                                                    \
488 }                                                                       \
489 static __inline void                                                    \
490 aac_requeue_ ## name (struct aac_command *cm)                           \
491 {                                                                       \
492         crit_enter();                                                   \
493         if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) {                   \
494                 printf("command %p is on another queue, flags = %#x\n", \
495                        cm, cm->cm_flags);                               \
496                 panic("command is on another queue");                   \
497         }                                                               \
498         TAILQ_INSERT_HEAD(&cm->cm_sc->aac_ ## name, cm, cm_link);       \
499         cm->cm_flags |= AAC_ON_ ## index;                               \
500         AACQ_ADD(cm->cm_sc, index);                                     \
501         crit_exit();                                                    \
502 }                                                                       \
503 static __inline struct aac_command *                                    \
504 aac_dequeue_ ## name (struct aac_softc *sc)                             \
505 {                                                                       \
506         struct aac_command *cm;                                         \
507                                                                         \
508         crit_enter();                                                   \
509         if ((cm = TAILQ_FIRST(&sc->aac_ ## name)) != NULL) {            \
510                 if ((cm->cm_flags & AAC_ON_ ## index) == 0) {           \
511                         printf("command %p not in queue, flags = %#x, " \
512                                "bit = %#x\n", cm, cm->cm_flags,         \
513                                AAC_ON_ ## index);                       \
514                         panic("command not in queue");                  \
515                 }                                                       \
516                 TAILQ_REMOVE(&sc->aac_ ## name, cm, cm_link);           \
517                 cm->cm_flags &= ~AAC_ON_ ## index;                      \
518                 AACQ_REMOVE(sc, index);                                 \
519         }                                                               \
520         crit_exit();                                                    \
521         return(cm);                                                     \
522 }                                                                       \
523 static __inline void                                                    \
524 aac_remove_ ## name (struct aac_command *cm)                            \
525 {                                                                       \
526         crit_enter();                                                   \
527         if ((cm->cm_flags & AAC_ON_ ## index) == 0) {                   \
528                 printf("command %p not in queue, flags = %#x, "         \
529                        "bit = %#x\n", cm, cm->cm_flags,                 \
530                        AAC_ON_ ## index);                               \
531                 panic("command not in queue");                          \
532         }                                                               \
533         TAILQ_REMOVE(&cm->cm_sc->aac_ ## name, cm, cm_link);            \
534         cm->cm_flags &= ~AAC_ON_ ## index;                              \
535         AACQ_REMOVE(cm->cm_sc, index);                                  \
536         crit_exit();                                                    \
537 }                                                                       \
538 struct hack
539
540 AACQ_COMMAND_QUEUE(free, AACQ_FREE);
541 AACQ_COMMAND_QUEUE(ready, AACQ_READY);
542 AACQ_COMMAND_QUEUE(busy, AACQ_BUSY);
543 AACQ_COMMAND_QUEUE(complete, AACQ_COMPLETE);
544
545 /*
546  * outstanding bio queue
547  */
548 static __inline void
549 aac_initq_bio(struct aac_softc *sc)
550 {
551         bioq_init(&sc->aac_bioq);
552         AACQ_INIT(sc, AACQ_BIO);
553 }
554
555 static __inline void
556 aac_enqueue_bio(struct aac_softc *sc, struct bio *bio)
557 {
558         crit_enter();
559         bioq_insert_tail(&sc->aac_bioq, bio);
560         AACQ_ADD(sc, AACQ_BIO);
561         crit_exit();
562 }
563
564 static __inline struct bio *
565 aac_dequeue_bio(struct aac_softc *sc)
566 {
567         struct bio *bio;
568
569         crit_enter();
570         if ((bio = bioq_first(&sc->aac_bioq)) != NULL) {
571                 bioq_remove(&sc->aac_bioq, bio);
572                 AACQ_REMOVE(sc, AACQ_BIO);
573         }
574         crit_exit();
575         return(bio);
576 }
577
578 static __inline void
579 aac_print_printf(struct aac_softc *sc)
580 {
581         /*
582          * XXX We have the ability to read the length of the printf string
583          * from out of the mailboxes.
584          */
585         device_printf(sc->aac_dev, "**Monitor** %.*s", AAC_PRINTF_BUFSIZE,
586                       sc->aac_common->ac_printf);
587         AAC_QNOTIFY(sc, AAC_DB_PRINTF);
588 }