Attachment 300288 Details for Bug 438330 – Add a quirk for ht1000 pci-e bridges

[patch] Add a quirk for ht1000 pci-e bridges

pci-msi-ht1000-quirk.patch (text/plain), 3.39 KB, created by Doug Ledford on 2008-04-03 17:38:27 UTC

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Creator: Doug Ledford

Created: 2008-04-03 17:38:27 UTC

Size: 3.39 KB

patch

obsolete

>
>This patch combines the following 3 upstream commits:
>
>commit 6bae1d96c6d7dde078994f6cb98235fd46f8736b
>Author: Sebastien Dugue <sebastien.dugue@bull.net>
>Date:   Thu Dec 13 16:09:25 2007 -0800
>
>    PCI: quirk: enable MSI Mapping on HT1000
>
>    Add a quirk to enable the MSI mapping capability on HyperTransport bridges.
>
>commit 2cc31879f8cfa0efc74fe7e58ab4e01ef5908730
>Author: David Miller <davem@davemloft.net>
>Date:   Thu Oct 25 01:15:24 2007 -0700
>
>    PCI: Revert "PCI: disable MSI by default on systems with Serverworks HT1000 chips"
>
>commit 1d84b5424efbcce69a1c955ba181147d23d43a14
>Author: David Miller <davem@davemloft.net>
>Date:   Thu Oct 25 01:15:53 2007 -0700
>
>    PCI: Add MSI quirk for ServerWorks HT1000 PCIX bridge.
>
>but that one will not be used since it appears to be a kabi breaker and
>since tg3 is currently the only driver needing the workaround it seems
>reasonable to keep the changes there.
>
>diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
>index d4a898c..3bfc030 100644
>--- a/drivers/pci/quirks.c
>+++ b/drivers/pci/quirks.c
>@@ -1756,7 +1756,6 @@ static void __init quirk_disable_all_msi(struct pci_dev *dev)
> 	printk(KERN_WARNING "PCI: MSI quirk detected. MSI deactivated.\n");
> }
> DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
>-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000_PCIX, quirk_disable_all_msi);
> DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
> DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
> DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
>@@ -1811,6 +1810,33 @@ static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
> DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
> 			quirk_msi_ht_cap);
> 
>+
>+/*
>+ *  Force enable MSI mapping capability on HT bridges
>+ */
>+static void __devinit quirk_msi_ht_cap_enable(struct pci_dev *dev)
>+{
>+	int pos, ttl = 48;
>+
>+	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
>+	while (pos && ttl--) {
>+		u8 flags;
>+
>+		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) {
>+			printk(KERN_INFO "PCI: Enabling HT MSI Mapping on %s\n",
>+			       pci_name(dev));
>+
>+			pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
>+					      flags | HT_MSI_FLAGS_ENABLE);
>+		}
>+		pos = pci_find_next_ht_capability(dev, pos,
>+						  HT_CAPTYPE_MSI_MAPPING);
>+	}
>+}
>+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
>+			 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
>+			 quirk_msi_ht_cap_enable);
>+
> /* The nVidia CK804 chipset may have 2 HT MSI mappings.
>  * MSI are supported if the MSI capability set in any of these mappings.
>  */
>diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
>index 1a2ed93..a136c63 100644
>--- a/include/linux/pci_ids.h
>+++ b/include/linux/pci_ids.h
>@@ -1431,8 +1431,8 @@
> #define PCI_DEVICE_ID_SERVERWORKS_HE	  0x0008
> #define PCI_DEVICE_ID_SERVERWORKS_LE	  0x0009
> #define PCI_DEVICE_ID_SERVERWORKS_GCNB_LE 0x0017
>+#define PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB	0x0036
> #define PCI_DEVICE_ID_SERVERWORKS_EPB	  0x0103
>-#define PCI_DEVICE_ID_SERVERWORKS_HT1000_PCIX	0x0104
> #define PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE	0x0132
> #define PCI_DEVICE_ID_SERVERWORKS_OSB4	  0x0200
> #define PCI_DEVICE_ID_SERVERWORKS_CSB5	  0x0201
>diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c

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