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 1.9 2005/06/09 20:55:05 swildner 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 bio              *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 bio_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 bio *bp);
 394 extern void             aac_biodone(struct bio *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 bio *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 bio *
 569 aac_dequeue_bio(struct aac_softc *sc)
 570 {
 571         struct bio *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 }