linux-kernel - Re: sata_mv 0000:03:06.0: PCI ERROR; PCI IRQ cause=0x30000040

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Date:	Thu, 08 Oct 2009 23:07:39 -0400
From:	Mark Lord <liml@....ca>
To:	Bernie Innocenti <bernie@...ewiz.org>
Cc:	Harri Olin <harri.olin@...il.com>, linux-ide@...r.kernel.org,
	lkml <linux-kernel@...r.kernel.org>, sysadmin <sysadmin@....org>
Subject: Re: sata_mv 0000:03:06.0: PCI ERROR; PCI IRQ cause=0x30000040

Bernie Innocenti wrote:
>
> I want to try reducing the frequency of the PCI-X bus, but the BIOS does
> not seem to provide a setting for it.  Is there another way?
..

Nothing that's easy.

Here.. apply this patch, and post the output after you reboot with it.


--- 2.6.31/drivers/ata/sata_mv.c.orig	2009-08-21 22:16:05.000000000 -0400
+++ linux/drivers/ata/sata_mv.c	2009-10-08 23:05:37.392203506 -0400
@@ -3738,6 +3738,12 @@
 			hp_flags |= MV_HP_ERRATA_60X1B2;
 			break;
 		case 0x9:
+		{
+			struct mv_host_priv *hpriv = host->private_data;
+			void __iomem *mmio = hpriv->base;
+			printk(KERN_INFO "sata_mv: pcix_mode=%d\n", mv_in_pcix_mode(host));
+			printk(KERN_INFO "sata_mv: MV_PCI_COMMAND=%08x\n", readl(mmio + MV_PCI_COMMAND);
+		}
 			hp_flags |= MV_HP_ERRATA_60X1C0;
 			break;
 		default:
--
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