linux-kernel - Re: [PATCH] pci: don't enable too many HT MSI mapping

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Date:	Sun, 1 Mar 2009 08:58:05 +0100
From:	Prakash Punnoor <prakash@...noor.de>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Robert Hancock <hancockrwd@...il.com>, david@...g.hm,
	Matthew Wilcox <matthew@....cx>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH] pci: don't enable too many HT MSI mapping

[PATCH] Enable HT MSI mapping on all known needed NVidia host bridges

v3 of Yinghai Lu's work only enables HT MSI mapping for one specific host bridge.
Do this also for all known needed ones as specified by NVidia's original patch.

Signed-off-by: Prakash Punnoor <prakash@...noor.de>

--- drivers/pci/quirks.c.current	2009-03-01 08:42:31.321660493 +0100
+++ drivers/pci/quirks.c	2009-03-01 08:47:47.267657376 +0100
@@ -2189,8 +2189,20 @@
 	return __nv_msi_ht_cap_quirk(dev, 0);
 }
 
-/* werid?, c51/mcp51 need c51 ht msi to be enable to make mcp51 ht msi working */
+/* Enable HT MSI mapping on following host brigdes */
+/* C51 host bridges */
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x02f0, nv_msi_ht_cap_quirk_all);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x02f1, nv_msi_ht_cap_quirk_all);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x02f2, nv_msi_ht_cap_quirk_all);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x02f3, nv_msi_ht_cap_quirk_all);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x02f4, nv_msi_ht_cap_quirk_all);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x02f5, nv_msi_ht_cap_quirk_all);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x02f6, nv_msi_ht_cap_quirk_all);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x02f7, nv_msi_ht_cap_quirk_all);
+/* MCP55 host bridge */
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0369, nv_msi_ht_cap_quirk_all);
+
+/* Enable MSI mapping on all regular devices */
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
 
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);

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