From: Grant Grundler <grundler@parisc-linux.org>
To: Jochen Friedrich <jochen@scram.de>
Cc: Jesse Barnes <jbarnes@sgi.com>,
linux-kernel@vger.kernel.org, jeremy@sgi.com,
linux-pci@atrey.karlin.mff.cuni.cz, Jame.Bottomley@steeleye.com
Subject: Re: [RFC] Relaxed PIO read vs. DMA write ordering
Date: Fri, 9 Jan 2004 13:27:18 -0700 [thread overview]
Message-ID: <20040109202718.GB14165@colo.lackof.org> (raw)
In-Reply-To: <Pine.LNX.4.58.0401090833480.4454@localhost>
On Fri, Jan 09, 2004 at 08:39:28AM +0100, Jochen Friedrich wrote:
> And there are reasons for drivers still using the pci_* API. In tms380tr,
> i support both PCI and ISA cards. The pci_* API supports mapping ISA cards
> for bus master DMA by passing a NULL for pdev. The new API still fails
> because of the BUG_ON(dev->bus != &pci_bus_type).
I don't think that's a problem of API, rather the implementation.
> Unfortunately, on 64 bit
> platforms like Alpha, the mapping is required to set up the IOMMU.
Not just alpha.
ia64, parisc, x86_64, sparc64, mips, (and a few others) also have IO MMUs.
grant
next prev parent reply other threads:[~2004-01-09 20:27 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-07 17:58 Jesse Barnes
2004-01-07 19:02 ` Matthew Wilcox
2004-01-07 22:21 ` Grant Grundler
2004-01-07 23:07 ` Jesse Barnes
2004-01-07 23:27 ` Greg KH
2004-01-07 23:56 ` Jesse Barnes
2004-01-08 0:34 ` Jesse Barnes
2004-01-08 0:08 ` Jeremy Higdon
2004-01-08 10:01 ` Jes Sorensen
2004-01-08 6:38 ` Grant Grundler
2004-01-08 16:23 ` Leonid Grossman
2004-01-08 17:39 ` Jesse Barnes
2004-01-08 17:54 ` Christoph Hellwig
2004-01-08 19:48 ` Leonid Grossman
2004-01-08 17:36 ` Jesse Barnes
2004-01-08 18:44 ` Grant Grundler
2004-01-09 7:13 ` Jeremy Higdon
2004-01-09 19:51 ` Jesse Barnes
2004-01-09 23:15 ` Jesse Barnes
2004-01-09 20:02 ` Grant Grundler
2004-01-11 14:34 ` James Bottomley
2004-01-09 7:39 ` Jochen Friedrich
2004-01-09 20:27 ` Grant Grundler [this message]
2004-01-09 22:12 ` Ivan Kokshaysky
2004-01-07 22:58 ` Jesse Barnes
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