From: Jeff Garzik <jgarzik@pobox.com>
To: long <tlnguyen@snoqualmie.dp.intel.com>
Cc: linux-kernel@vger.kernel.org, greg@kroah.com,
jun.nakajima@intel.com, tom.l.nguyen@intel.com,
zwane@linuxpower.ca
Subject: Re: MSI fix for buggy PCI/PCI-X hardware
Date: Tue, 9 Sep 2003 14:41:22 -0400 [thread overview]
Message-ID: <20030909184122.GA3635@gtf.org> (raw)
In-Reply-To: <200309091539.h89FdbfK023026@snoqualmie.dp.intel.com>
On Tue, Sep 09, 2003 at 08:39:37AM -0700, long wrote:
> The proposed solution is to provide a new API, named "int
> disable_msi(struct pci_dev *dev)", to allow IHV's who have
> shipped PCI/PCI-X hardware that does not work in MSI mode to update
> their software drivers to request the kernel to switch the
> interrupt mode from MSI mode back to IRQ pin-assertion mode.
No need for a new API. We have drivers/pci/quirk.c where we add PCI
devices with known bugs. If there is commonality of the bugs across
hardware, we can easily add a common "quirk" which fixes the situation.
Individual drivers shouldn't need to bother with this, really.
As an aside, if you need to blacklist certain _systems_ rather than
certain PCI devices, you should either modify drivers/pci/quirks.c or
arch/i386/kernel/dmi_scan.c.
Jeff
next prev parent reply other threads:[~2003-09-09 18:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-09 15:39 MSI fix for buggy PCI/PCI-X hardware long
2003-09-09 18:41 ` Jeff Garzik [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-09-09 22:14 Nakajima, Jun
2003-09-09 22:52 ` Jeff Garzik
2003-09-10 21:31 ` Zwane Mwaikambo
2003-09-10 1:26 Nakajima, Jun
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