xref: /freebsd/sys/dev/aic7xxx/aic79xx_osm.h (revision 6780ab54325a71e7e70112b11657973edde8655e)
1 /*
2  * FreeBSD platform specific driver option settings, data structures,
3  * function declarations and includes.
4  *
5  * Copyright (c) 1994-2001 Justin T. Gibbs.
6  * Copyright (c) 2001-2002 Adaptec Inc.
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  *    without modification.
15  * 2. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission.
17  *
18  * Alternatively, this software may be distributed under the terms of the
19  * GNU Public License ("GPL").
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
25  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  *
33  * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.h#19 $
34  *
35  * $FreeBSD$
36  */
37 
38 #ifndef _AIC79XX_FREEBSD_H_
39 #define _AIC79XX_FREEBSD_H_
40 
41 #include <opt_aic79xx.h>	/* for config options */
42 
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/bus.h>		/* For device_t */
46 #if __FreeBSD_version >= 500000
47 #include <sys/endian.h>
48 #endif
49 #include <sys/eventhandler.h>
50 #include <sys/kernel.h>
51 #include <sys/malloc.h>
52 #include <sys/queue.h>
53 
54 #define AHD_PCI_CONFIG 1
55 #include <machine/bus_memio.h>
56 #include <machine/bus_pio.h>
57 #include <machine/bus.h>
58 #include <machine/endian.h>
59 #include <machine/clock.h>
60 #include <machine/resource.h>
61 
62 #include <sys/rman.h>
63 
64 #include <pci/pcireg.h>
65 #include <pci/pcivar.h>
66 
67 #include <cam/cam.h>
68 #include <cam/cam_ccb.h>
69 #include <cam/cam_debug.h>
70 #include <cam/cam_sim.h>
71 #include <cam/cam_xpt_sim.h>
72 
73 #include <cam/scsi/scsi_all.h>
74 #include <cam/scsi/scsi_message.h>
75 #include <cam/scsi/scsi_iu.h>
76 
77 #ifdef CAM_NEW_TRAN_CODE
78 #define AHD_NEW_TRAN_SETTINGS
79 #endif /* CAM_NEW_TRAN_CODE */
80 
81 /****************************** Platform Macros *******************************/
82 #define	SIM_IS_SCSIBUS_B(ahd, sim)	\
83 	(0)
84 #define	SIM_CHANNEL(ahd, sim)	\
85 	('A')
86 #define	SIM_SCSI_ID(ahd, sim)	\
87 	(ahd->our_id)
88 #define	SIM_PATH(ahd, sim)	\
89 	(ahd->platform_data->path)
90 #define BUILD_SCSIID(ahd, sim, target_id, our_id) \
91         ((((target_id) << TID_SHIFT) & TID) | (our_id))
92 
93 
94 #define SCB_GET_SIM(ahd, scb) \
95 	((ahd)->platform_data->sim)
96 
97 #ifndef offsetof
98 #define offsetof(type, member)  ((size_t)(&((type *)0)->member))
99 #endif
100 /************************* Forward Declarations *******************************/
101 typedef device_t ahd_dev_softc_t;
102 typedef union ccb *ahd_io_ctx_t;
103 
104 /***************************** Bus Space/DMA **********************************/
105 #define ahd_dma_tag_create(ahd, parent_tag, alignment, boundary,	\
106 			   lowaddr, highaddr, filter, filterarg,	\
107 			   maxsize, nsegments, maxsegsz, flags,		\
108 			   dma_tagp)					\
109 	bus_dma_tag_create(parent_tag, alignment, boundary,		\
110 			   lowaddr, highaddr, filter, filterarg,	\
111 			   maxsize, nsegments, maxsegsz, flags,		\
112 			   dma_tagp)
113 
114 #define ahd_dma_tag_destroy(ahd, tag)					\
115 	bus_dma_tag_destroy(tag)
116 
117 #define ahd_dmamem_alloc(ahd, dmat, vaddr, flags, mapp)			\
118 	bus_dmamem_alloc(dmat, vaddr, flags, mapp)
119 
120 #define ahd_dmamem_free(ahd, dmat, vaddr, map)				\
121 	bus_dmamem_free(dmat, vaddr, map)
122 
123 #define ahd_dmamap_create(ahd, tag, flags, mapp)			\
124 	bus_dmamap_create(tag, flags, mapp)
125 
126 #define ahd_dmamap_destroy(ahd, tag, map)				\
127 	bus_dmamap_destroy(tag, map)
128 
129 #define ahd_dmamap_load(ahd, dmat, map, addr, buflen, callback,		\
130 			callback_arg, flags)				\
131 	bus_dmamap_load(dmat, map, addr, buflen, callback, callback_arg, flags)
132 
133 #define ahd_dmamap_unload(ahd, tag, map)				\
134 	bus_dmamap_unload(tag, map)
135 
136 /* XXX Need to update Bus DMA for partial map syncs */
137 #define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)		\
138 	bus_dmamap_sync(dma_tag, dmamap, op)
139 
140 /************************ Tunable Driver Parameters  **************************/
141 /*
142  * The number of dma segments supported.  The sequencer can handle any number
143  * of physically contiguous S/G entrys.  To reduce the driver's memory
144  * consumption, we limit the number supported to be sufficient to handle
145  * the largest mapping supported by the kernel, MAXPHYS.  Assuming the
146  * transfer is as fragmented as possible and unaligned, this turns out to
147  * be the number of paged sized transfers in MAXPHYS plus an extra element
148  * to handle any unaligned residual.  The sequencer fetches SG elements
149  * in cacheline sized chucks, so make the number per-transaction an even
150  * multiple of 16 which should align us on even the largest of cacheline
151  * boundaries.
152  */
153 #define AHD_NSEG (roundup(btoc(MAXPHYS) + 1, 16))
154 
155 /* This driver supports target mode */
156 #if NOT_YET
157 #define AHD_TARGET_MODE 1
158 #endif
159 
160 /************************** Softc/SCB Platform Data ***************************/
161 struct ahd_platform_data {
162 	/*
163 	 * Hooks into the XPT.
164 	 */
165 	struct	cam_sim		*sim;
166 	struct	cam_sim		*sim_b;
167 	struct	cam_path	*path;
168 	struct	cam_path	*path_b;
169 
170 	int			 regs_res_type[2];
171 	int			 regs_res_id[2];
172 	int			 irq_res_type;
173 	struct resource		*regs[2];
174 	struct resource		*irq;
175 	void			*ih;
176 	eventhandler_tag	 eh;
177 };
178 
179 struct scb_platform_data {
180 };
181 
182 /********************************* Byte Order *********************************/
183 #if __FreeBSD_version >= 500000
184 #define ahd_htobe16(x) htobe16(x)
185 #define ahd_htobe32(x) htobe32(x)
186 #define ahd_htobe64(x) htobe64(x)
187 #define ahd_htole16(x) htole16(x)
188 #define ahd_htole32(x) htole32(x)
189 #define ahd_htole64(x) htole64(x)
190 
191 #define ahd_be16toh(x) be16toh(x)
192 #define ahd_be32toh(x) be32toh(x)
193 #define ahd_be64toh(x) be64toh(x)
194 #define ahd_le16toh(x) le16toh(x)
195 #define ahd_le32toh(x) le32toh(x)
196 #define ahd_le64toh(x) le64toh(x)
197 #else
198 #define ahd_htobe16(x) (x)
199 #define ahd_htobe32(x) (x)
200 #define ahd_htobe64(x) (x)
201 #define ahd_htole16(x) (x)
202 #define ahd_htole32(x) (x)
203 #define ahd_htole64(x) (x)
204 
205 #define ahd_be16toh(x) (x)
206 #define ahd_be32toh(x) (x)
207 #define ahd_be64toh(x) (x)
208 #define ahd_le16toh(x) (x)
209 #define ahd_le32toh(x) (x)
210 #define ahd_le64toh(x) (x)
211 #endif
212 
213 /************************** Timer DataStructures ******************************/
214 typedef struct callout ahd_timer_t;
215 
216 /***************************** Core Includes **********************************/
217 #if AHD_REG_PRETTY_PRINT
218 #define AIC_DEBUG_REGISTERS 1
219 #else
220 #define AIC_DEBUG_REGISTERS 0
221 #endif
222 #include <dev/aic7xxx/aic79xx.h>
223 
224 /***************************** Timer Facilities *******************************/
225 timeout_t ahd_timeout;
226 #if __FreeBSD_version >= 500000
227 #define ahd_timer_init(timer) callout_init(timer, /*mpsafe*/0)
228 #else
229 #define ahd_timer_init callout_init
230 #endif
231 #define ahd_timer_stop callout_stop
232 
233 static __inline void
234 ahd_timer_reset(ahd_timer_t *timer, u_int usec, ahd_callback_t *func, void *arg)
235 {
236 	callout_reset(timer, (usec * hz)/1000000, func, arg);
237 }
238 
239 static __inline void
240 ahd_scb_timer_reset(struct scb *scb, u_int usec)
241 {
242 	untimeout(ahd_timeout, (caddr_t)scb, scb->io_ctx->ccb_h.timeout_ch);
243 	scb->io_ctx->ccb_h.timeout_ch =
244 	    timeout(ahd_timeout, scb, (usec * hz)/1000000);
245 }
246 
247 /*************************** Device Access ************************************/
248 #define ahd_inb(ahd, port)					\
249 	bus_space_read_1((ahd)->tags[(port) >> 8],		\
250 			 (ahd)->bshs[(port) >> 8], (port) & 0xFF)
251 
252 #define ahd_outb(ahd, port, value)				\
253 	bus_space_write_1((ahd)->tags[(port) >> 8],		\
254 			  (ahd)->bshs[(port) >> 8], (port) & 0xFF, value)
255 
256 #define ahd_inw_atomic(ahd, port)				\
257 	ahd_le16toh(bus_space_read_2((ahd)->tags[(port) >> 8],	\
258 				     (ahd)->bshs[(port) >> 8], (port) & 0xFF))
259 
260 #define ahd_outw_atomic(ahd, port, value)			\
261 	bus_space_write_2((ahd)->tags[(port) >> 8],		\
262 			  (ahd)->bshs[(port) >> 8],		\
263 			  (port & 0xFF), ahd_htole16(value))
264 
265 #define ahd_outsb(ahd, port, valp, count)			\
266 	bus_space_write_multi_1((ahd)->tags[(port) >> 8],	\
267 				(ahd)->bshs[(port) >> 8],	\
268 				(port & 0xFF), valp, count)
269 
270 #define ahd_insb(ahd, port, valp, count)			\
271 	bus_space_read_multi_1((ahd)->tags[(port) >> 8],	\
272 			       (ahd)->bshs[(port) >> 8],	\
273 			       (port & 0xFF), valp, count)
274 
275 static __inline void ahd_flush_device_writes(struct ahd_softc *);
276 
277 static __inline void
278 ahd_flush_device_writes(struct ahd_softc *ahd)
279 {
280 	/* XXX Is this sufficient for all architectures??? */
281 	ahd_inb(ahd, INTSTAT);
282 }
283 
284 /**************************** Locking Primitives ******************************/
285 /* Lock protecting internal data structures */
286 static __inline void ahd_lockinit(struct ahd_softc *);
287 static __inline void ahd_lock(struct ahd_softc *, unsigned long *flags);
288 static __inline void ahd_unlock(struct ahd_softc *, unsigned long *flags);
289 
290 /* Lock held during command compeletion to the upper layer */
291 static __inline void ahd_done_lockinit(struct ahd_softc *);
292 static __inline void ahd_done_lock(struct ahd_softc *, unsigned long *flags);
293 static __inline void ahd_done_unlock(struct ahd_softc *, unsigned long *flags);
294 
295 /* Lock held during ahd_list manipulation and ahd softc frees */
296 static __inline void ahd_list_lockinit(void);
297 static __inline void ahd_list_lock(unsigned long *flags);
298 static __inline void ahd_list_unlock(unsigned long *flags);
299 
300 static __inline void
301 ahd_lockinit(struct ahd_softc *ahd)
302 {
303 }
304 
305 static __inline void
306 ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
307 {
308 	*flags = splcam();
309 }
310 
311 static __inline void
312 ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
313 {
314 	splx(*flags);
315 }
316 
317 /* Lock held during command compeletion to the upper layer */
318 static __inline void
319 ahd_done_lockinit(struct ahd_softc *ahd)
320 {
321 }
322 
323 static __inline void
324 ahd_done_lock(struct ahd_softc *ahd, unsigned long *flags)
325 {
326 }
327 
328 static __inline void
329 ahd_done_unlock(struct ahd_softc *ahd, unsigned long *flags)
330 {
331 }
332 
333 /* Lock held during ahd_list manipulation and ahd softc frees */
334 static __inline void
335 ahd_list_lockinit()
336 {
337 }
338 
339 static __inline void
340 ahd_list_lock(unsigned long *flags)
341 {
342 }
343 
344 static __inline void
345 ahd_list_unlock(unsigned long *flags)
346 {
347 }
348 /****************************** OS Primitives *********************************/
349 #define ahd_delay DELAY
350 
351 /************************** Transaction Operations ****************************/
352 static __inline void ahd_set_transaction_status(struct scb *, uint32_t);
353 static __inline void ahd_set_scsi_status(struct scb *, uint32_t);
354 static __inline uint32_t ahd_get_transaction_status(struct scb *);
355 static __inline uint32_t ahd_get_scsi_status(struct scb *);
356 static __inline void ahd_set_transaction_tag(struct scb *, int, u_int);
357 static __inline u_long ahd_get_transfer_length(struct scb *);
358 static __inline int ahd_get_transfer_dir(struct scb *);
359 static __inline void ahd_set_residual(struct scb *, u_long);
360 static __inline void ahd_set_sense_residual(struct scb *, u_long);
361 static __inline u_long ahd_get_residual(struct scb *);
362 static __inline int ahd_perform_autosense(struct scb *);
363 static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc*, struct scb*);
364 static __inline void ahd_freeze_simq(struct ahd_softc *);
365 static __inline void ahd_release_simq(struct ahd_softc *);
366 static __inline void ahd_freeze_ccb(union ccb *ccb);
367 static __inline void ahd_freeze_scb(struct scb *scb);
368 static __inline void ahd_platform_freeze_devq(struct ahd_softc *, struct scb *);
369 static __inline int  ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
370 					     char channel, int lun, u_int tag,
371 					     role_t role, uint32_t status);
372 
373 static __inline
374 void ahd_set_transaction_status(struct scb *scb, uint32_t status)
375 {
376 	scb->io_ctx->ccb_h.status &= ~CAM_STATUS_MASK;
377 	scb->io_ctx->ccb_h.status |= status;
378 }
379 
380 static __inline
381 void ahd_set_scsi_status(struct scb *scb, uint32_t status)
382 {
383 	scb->io_ctx->csio.scsi_status = status;
384 }
385 
386 static __inline
387 uint32_t ahd_get_transaction_status(struct scb *scb)
388 {
389 	return (scb->io_ctx->ccb_h.status & CAM_STATUS_MASK);
390 }
391 
392 static __inline
393 uint32_t ahd_get_scsi_status(struct scb *scb)
394 {
395 	return (scb->io_ctx->csio.scsi_status);
396 }
397 
398 static __inline
399 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type)
400 {
401 	scb->io_ctx->csio.tag_action = type;
402 	if (enabled)
403 		scb->io_ctx->ccb_h.flags |= CAM_TAG_ACTION_VALID;
404 	else
405 		scb->io_ctx->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
406 }
407 
408 static __inline
409 u_long ahd_get_transfer_length(struct scb *scb)
410 {
411 	return (scb->io_ctx->csio.dxfer_len);
412 }
413 
414 static __inline
415 int ahd_get_transfer_dir(struct scb *scb)
416 {
417 	return (scb->io_ctx->ccb_h.flags & CAM_DIR_MASK);
418 }
419 
420 static __inline
421 void ahd_set_residual(struct scb *scb, u_long resid)
422 {
423 	scb->io_ctx->csio.resid = resid;
424 }
425 
426 static __inline
427 void ahd_set_sense_residual(struct scb *scb, u_long resid)
428 {
429 	scb->io_ctx->csio.sense_resid = resid;
430 }
431 
432 static __inline
433 u_long ahd_get_residual(struct scb *scb)
434 {
435 	return (scb->io_ctx->csio.resid);
436 }
437 
438 static __inline
439 int ahd_perform_autosense(struct scb *scb)
440 {
441 	return (!(scb->io_ctx->ccb_h.flags & CAM_DIS_AUTOSENSE));
442 }
443 
444 static __inline uint32_t
445 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb)
446 {
447 	return (sizeof(struct scsi_sense_data));
448 }
449 
450 static __inline void
451 ahd_freeze_simq(struct ahd_softc *ahd)
452 {
453 	xpt_freeze_simq(ahd->platform_data->sim, /*count*/1);
454 }
455 
456 static __inline void
457 ahd_release_simq(struct ahd_softc *ahd)
458 {
459 	xpt_release_simq(ahd->platform_data->sim, /*run queue*/TRUE);
460 }
461 
462 static __inline void
463 ahd_freeze_ccb(union ccb *ccb)
464 {
465 	if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) {
466 		ccb->ccb_h.status |= CAM_DEV_QFRZN;
467 		xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
468 	}
469 }
470 
471 static __inline void
472 ahd_freeze_scb(struct scb *scb)
473 {
474 	ahd_freeze_ccb(scb->io_ctx);
475 }
476 
477 static __inline void
478 ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
479 {
480 	/* Nothing to do here for FreeBSD */
481 }
482 
483 static __inline int
484 ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
485 			char channel, int lun, u_int tag,
486 			role_t role, uint32_t status)
487 {
488 	/* Nothing to do here for FreeBSD */
489 	return (0);
490 }
491 
492 static __inline void
493 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
494 {
495 	/* What do we do to generically handle driver resource shortages??? */
496 	if ((ahd->flags & AHD_RESOURCE_SHORTAGE) != 0
497 	 && scb->io_ctx != NULL
498 	 && (scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
499 		scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
500 		ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
501 	}
502 	scb->io_ctx = NULL;
503 }
504 
505 /********************************** PCI ***************************************/
506 #ifdef AHD_PCI_CONFIG
507 static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci,
508 					     int reg, int width);
509 static __inline void	 ahd_pci_write_config(ahd_dev_softc_t pci,
510 					      int reg, uint32_t value,
511 					      int width);
512 static __inline int	 ahd_get_pci_function(ahd_dev_softc_t);
513 static __inline int	 ahd_get_pci_slot(ahd_dev_softc_t);
514 static __inline int	 ahd_get_pci_bus(ahd_dev_softc_t);
515 
516 int			 ahd_pci_map_registers(struct ahd_softc *ahd);
517 int			 ahd_pci_map_int(struct ahd_softc *ahd);
518 
519 static __inline uint32_t
520 ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width)
521 {
522 	return (pci_read_config(pci, reg, width));
523 }
524 
525 static __inline void
526 ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width)
527 {
528 	pci_write_config(pci, reg, value, width);
529 }
530 
531 static __inline int
532 ahd_get_pci_function(ahd_dev_softc_t pci)
533 {
534 	return (pci_get_function(pci));
535 }
536 
537 static __inline int
538 ahd_get_pci_slot(ahd_dev_softc_t pci)
539 {
540 	return (pci_get_slot(pci));
541 }
542 
543 static __inline int
544 ahd_get_pci_bus(ahd_dev_softc_t pci)
545 {
546 	return (pci_get_bus(pci));
547 }
548 
549 typedef enum
550 {
551 	AHD_POWER_STATE_D0,
552 	AHD_POWER_STATE_D1,
553 	AHD_POWER_STATE_D2,
554 	AHD_POWER_STATE_D3
555 } ahd_power_state;
556 
557 void ahd_power_state_change(struct ahd_softc *ahd,
558 			    ahd_power_state new_state);
559 #endif
560 /******************************** VL/EISA *************************************/
561 int aic7770_map_registers(struct ahd_softc *ahd);
562 int aic7770_map_int(struct ahd_softc *ahd, int irq);
563 
564 /********************************* Debug **************************************/
565 static __inline void	ahd_print_path(struct ahd_softc *, struct scb *);
566 static __inline void	ahd_platform_dump_card_state(struct ahd_softc *ahd);
567 
568 static __inline void
569 ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
570 {
571 	xpt_print_path(scb->io_ctx->ccb_h.path);
572 }
573 
574 static __inline void
575 ahd_platform_dump_card_state(struct ahd_softc *ahd)
576 {
577 	/* Nothing to do here for FreeBSD */
578 }
579 /**************************** Transfer Settings *******************************/
580 void	  ahd_notify_xfer_settings_change(struct ahd_softc *,
581 					  struct ahd_devinfo *);
582 void	  ahd_platform_set_tags(struct ahd_softc *, struct ahd_devinfo *,
583 				int /*enable*/);
584 
585 /************************* Initialization/Teardown ****************************/
586 int	  ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
587 void	  ahd_platform_free(struct ahd_softc *ahd);
588 int	  ahd_map_int(struct ahd_softc *ahd);
589 int	  ahd_attach(struct ahd_softc *);
590 int	  ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd);
591 int	  ahd_detach(device_t);
592 #define	ahd_platform_init(arg)
593 
594 
595 /****************************** Interrupts ************************************/
596 void			ahd_platform_intr(void *);
597 static __inline void	ahd_platform_flushwork(struct ahd_softc *ahd);
598 static __inline void
599 ahd_platform_flushwork(struct ahd_softc *ahd)
600 {
601 }
602 
603 /************************ Misc Function Declarations **************************/
604 void	  ahd_done(struct ahd_softc *ahd, struct scb *scb);
605 void	  ahd_send_async(struct ahd_softc *, char /*channel*/,
606 			 u_int /*target*/, u_int /*lun*/, ac_code, void *arg);
607 #endif  /* _AIC79XX_FREEBSD_H_ */
608