I believe aac hasn't worked in a long time. Was never enabled on amd64.
On i386, it was disabled by
revision 1.406
date: 2005/03/18 22:39:59; author: deraadt; state: Exp; lines: +3 -3;
shut off aac(4) unless Adaptec stops behaving like assholes
Adaptec wouldn't give us documentation. FreeBSD people had docs,
because employees were there. Wikipedia page uses the past-tense verb
"was" in referring to them.
Not sure this is worth it.
> aac(4) doesn't build in the current status. The following diff fixes
> compile errors. Also, with the AAC_DEBUG option. I removed the
> prototypes of the inline functions in aacvar.h because of a K&R style
> compile error and that the prototypes are directly followed by their
> implementation.
>
> ok?
>
> Bye,
> Jan
>
> Index: dev/ic/aac.c
> ===================================================================
> RCS file: /mount/openbsd/cvs/src/sys/dev/ic/aac.c,v
> retrieving revision 1.70
> diff -u -p -r1.70 aac.c
> --- dev/ic/aac.c 11 Apr 2017 14:43:49 -0000 1.70
> +++ dev/ic/aac.c 5 Oct 2019 11:06:18 -0000
> @@ -2129,7 +2129,7 @@ aac_internal_cache_cmd(struct scsi_xfer
> struct scsi_read_cap_data rcd;
> u_int8_t target = link->target;
>
> - AAC_DPRINTF(AAC_D_CMD, ("aac_internal_cache_cmd: ",
> + AAC_DPRINTF(AAC_D_CMD, ("%s: aac_internal_cache_cmd: ",
> sc->aac_dev.dv_xname));
>
> switch (xs->cmd->opcode) {
> @@ -2277,7 +2277,7 @@ aac_scsi_cmd(struct scsi_xfer *xs)
> blockcnt = _2btol(rwb->length);
> }
>
> - AAC_DPRINTF(AAC_D_CMD, ("blkno=%d bcount=%d ",
> + AAC_DPRINTF(AAC_D_CMD, ("opcode=%d blkno=%d bcount=%d ",
> xs->cmd->opcode, blockno, blockcnt));
>
> if (blockno >= sc->aac_hdr[target].hd_size ||
> Index: dev/ic/aacvar.h
> ===================================================================
> RCS file: /mount/openbsd/cvs/src/sys/dev/ic/aacvar.h,v
> retrieving revision 1.13
> diff -u -p -r1.13 aacvar.h
> --- dev/ic/aacvar.h 1 Apr 2016 04:16:27 -0000 1.13
> +++ dev/ic/aacvar.h 5 Oct 2019 15:01:12 -0000
> @@ -429,11 +429,6 @@ int aac_attach(struct aac_softc *);
> int aac_intr(void *);
>
> /* These all require correctly aligned buffers */
> -static __inline__ void aac_enc16(u_int8_t *, u_int16_t);
> -static __inline__ void aac_enc32(u_int8_t *, u_int32_t);
> -static __inline__ u_int16_t aac_dec16(u_int8_t *);
> -static __inline__ u_int32_t aac_dec32(u_int8_t *);
> -
> static __inline__ void
> aac_enc16(addr, value)
> u_int8_t *addr;
>
