Subject: Re: FreeBSD Bus DMA
To: Jason Thorpe <email@example.com>
From: Jonathan Stone <jonathan@DSG.Stanford.EDU>
Date: 06/11/1998 16:11:42
Jason Thorpe writes:
>I don't think asking for concrete justification is unreasonable. And,
>until you provide it, I'm not really willing to consider changing the
>interface in any way that you suggest.
one of the things Justin added was a driver-specific filter function.
Justin says that's a better way to detect mappings that oculd tickle
driver bugs. VLB buslogic boards were given as a specific example; it
sounds plausible to me. (I'd assume that if NetBSD added this, the
filter argument would be NULL in almost all cases).
Does that count as concrete justification -- at least if the
filter-function works without switching to a callback-based model?