Date: Tue, 25 Jan 2000 13:24:56 +0900 From: KATO Takenori <kato@ganko.eps.nagoya-u.ac.jp> To: luoqi@watermarkgroup.com Cc: kato@ganko.eps.nagoya-u.ac.jp, FreeBSD-current@FreeBSD.ORG, FreeBSD-hackers@FreeBSD.ORG, FreeBSD98-hackers@jp.freebsd.org, nyan@jp.freebsd.org Subject: Re: indirection in bus space Message-ID: <20000125132456C.kato@gneiss.eps.nagoya-u.ac.jp> In-Reply-To: Your message of "Mon, 24 Jan 2000 21:04:33 -0500 (EST)" <200001250204.VAA14309@lor.watermarkgroup.com> References: <200001250204.VAA14309@lor.watermarkgroup.com>
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Luoqi Chen <luoqi@watermarkgroup.com> wrote:
> You could set the handle to point to the structure instead:
I think it is difficult to implement such conversion because:
- Not only bus space stuff also resource manager stuff need to
perform such conversion.
- The type of the bus_space_handle_t can by determined only by the
bus tag. The isa_alloc_resourcev (new function) cannot modify bus
tag because what it does is only to allocate resources and it
cannot register the address to the bus_space_handle_pc98. But
allocated resources must be stored into bus_space_handle_pc98.
-----------------------------------------------+--------------------------+
KATO Takenori <kato@ganko.eps.nagoya-u.ac.jp> | FreeBSD |
Dept. Earth Planet. Sci, Nagoya Univ. | The power to serve! |
Nagoya, 464-8602, Japan | http://www.FreeBSD.org/ |
|http://www.jp.FreeBSD.org/|
++++ FreeBSD(98) 3.3R-Rev. 01 available! +==========================+
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