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ahc(4): resolve some minor nits

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In ahc_init(), qoutfifo is already assigned to effectively the same
value a couple lines up, except in the first assignment it uses the
proper definition; keep the more descriptive assignment.

ahc_targetcmd_offset() gets the offset wrong entirely; as per the
area of ahc_init() this diff also touches, targetcmds is laid out first
in the shared map and it's followed by the qoutfifo.  As a result, we'd
generally be getting negative offsets here.  We can't actually do a
partial sync anyways, so there was no consequence to getting this wrong.

Reviewed by:	imp, mav

(cherry picked from commit b5e0cc2fa44f52f16fc0b9c3f1709bc0f43fe2d0)
This commit is contained in:
Kyle Evans 2024-04-20 22:04:04 -05:00
parent 7c3092e343
commit 60a4a8532b
2 changed files with 1 additions and 2 deletions
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1
sys/dev/aic7xxx/aic7xxx.c
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@ -4931,7 +4931,6 @@ ahc_init(struct ahc_softc *ahc)
for (i = 0; i < AHC_TMODE_CMDS; i++)
ahc->targetcmds[i].cmd_valid = 0;
ahc_sync_tqinfifo(ahc, BUS_DMASYNC_PREREAD);
ahc->qoutfifo = (uint8_t *)&ahc->targetcmds[256];
}
ahc->qinfifo = &ahc->qoutfifo[256];

2
sys/dev/aic7xxx/aic7xxx_inline.h
View file

@ -217,7 +217,7 @@ ahc_sync_sglist(struct ahc_softc *ahc, struct scb *scb, int op)
static __inline uint32_t
ahc_targetcmd_offset(struct ahc_softc *ahc, u_int index)
{
return (((uint8_t *)&ahc->targetcmds[index]) - ahc->qoutfifo);
return (((uint8_t *)&ahc->targetcmds[index]) - (uint8_t *)ahc->targetcmds);
}
/******************************** Debugging ***********************************/