From: James Bottomley <James.Bottomley@steeleye.com>
To: mjacob@feral.com
Cc: SCSI Mailing List <linux-scsi@vger.kernel.org>,
Andrew Vasquez <praka@san.rr.com>, Andrew Morton <akpm@digeo.com>
Subject: Re: qla2xxx and feral ISP updates in their respective BK trees
Date: 20 Jun 2003 13:17:46 -0500 [thread overview]
Message-ID: <1056133068.1804.22.camel@mulgrave> (raw)
In-Reply-To: <20030620102448.O305@wonky.in0.lcl>
On Fri, 2003-06-20 at 12:25, Matthew Jacob wrote:
> Oh- is parisc like PPC and doesn't really support io space? That is,
> prefers memory mapped registers?
Well, it does, for PCI (since it's required to by the spec). However,
the cost of generating an I/O cycle is very high (you essentially go via
some memory mapped registers in the bus controller). Parisc certainly
prefers memory mapped registers.
James
next prev parent reply other threads:[~2003-06-20 18:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-18 21:29 qla2xxx and feral ISP updates in their respective BK trees James Bottomley
2003-06-19 15:51 ` Andrew Vasquez
2003-06-20 17:12 ` Matthew Jacob
2003-06-20 17:19 ` James Bottomley
2003-06-20 17:25 ` Matthew Jacob
2003-06-20 18:17 ` James Bottomley [this message]
2003-06-20 18:34 ` Jeff Garzik
2003-06-20 18:39 ` Matthew Jacob
2003-06-20 21:59 ` Jeff Garzik
2003-06-20 22:06 ` Matthew Jacob
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