PCI: quirk: enable MSI Mapping on HT1000
Add a quirk to enable the MSI mapping capability on HyperTransport bridges. Wire Broadcom's HT1000 to use the quirk. Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andy Currid <acurrid@nvidia.com> Cc: Peer Chen <pchen@nvidia.com> Cc: Prakash Punnoor <prakash@punnoor.de> Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michael Chan <mchan@broadcom.com> Cc: Greg KH <greg@kroah.com> Cc: Andy Currid <acurrid@nvidia.com> Cc: Peer Chen <pchen@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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1 changed files with 27 additions and 3 deletions
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@ -1711,9 +1711,33 @@ static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
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}
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
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quirk_msi_ht_cap);
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS,
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PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
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quirk_msi_ht_cap);
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/*
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* Force enable MSI mapping capability on HT bridges
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*/
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static void __devinit quirk_msi_ht_cap_enable(struct pci_dev *dev)
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{
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int pos, ttl = 48;
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pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
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while (pos && ttl--) {
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u8 flags;
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if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) {
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printk(KERN_INFO "PCI: Enabling HT MSI Mapping on %s\n",
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pci_name(dev));
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pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
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flags | HT_MSI_FLAGS_ENABLE);
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}
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pos = pci_find_next_ht_capability(dev, pos,
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HT_CAPTYPE_MSI_MAPPING);
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}
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}
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
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PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
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quirk_msi_ht_cap_enable);
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/* The nVidia CK804 chipset may have 2 HT MSI mappings.
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* MSI are supported if the MSI capability set in any of these mappings.
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