From 6bae1d96c6d7dde078994f6cb98235fd46f8736b Mon Sep 17 00:00:00 2001 From: Sebastien Dugue Date: Thu, 13 Dec 2007 16:09:25 -0800 Subject: 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 Acked-by: "Eric W. Biederman" Cc: Andy Currid Cc: Peer Chen Cc: Prakash Punnoor Cc: Andrew Morton Acked-by: Michael Chan Cc: Greg KH Cc: Andy Currid Cc: Peer Chen Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- drivers/pci/quirks.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) (limited to 'drivers/pci/quirks.c') diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 2fbf60eac61..63357f07ca4 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -1711,9 +1711,33 @@ 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); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, - PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB, - 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. -- cgit v1.2.3