From: Chris Dearman <chris@linux-mips.org>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-ide@vger.kernel.org
Subject: [PATCH 0/1] sata_sil: Option to use IO space to access TF registers.
Date: Wed, 22 Oct 2008 11:23:34 -0700 [thread overview]
Message-ID: <20081022182243.9471.87443.stgit@linux-chris2.mips.com> (raw)
I'm working on a board where byte reads from the processor get
converted into word reads on the PCI bus. This doesn't mix well
with reading the TaskFile registers...
IO space reads do generate the correct byte enables so this patch
gives the option of accessing the TF registers via IO space.
I'm not sure if its worth adding this to the driver... it's a work
around for the "unfortunate" PCI behaviour on this board, but there
may be other challenged hardware out there, so it might be worth
considering.
Chris
next reply other threads:[~2008-10-22 18:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-22 18:23 Chris Dearman [this message]
2008-10-22 18:24 ` [PATCH 1/1] sata_sil: Option to use IO space to access TF registers Chris Dearman
2008-10-22 21:16 ` [PATCH 0/1] " Alan Cox
2008-10-22 23:34 ` Chris Dearman
2008-10-23 7:32 ` Alan Cox
2008-10-28 1:56 ` Tejun Heo
2008-10-30 22:58 ` Chris Dearman
2008-10-31 2:26 ` Tejun Heo
2008-10-31 8:48 ` Alan Cox
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