diff options
| author | Sebastien Dugue <sebastien.dugue@bull.net> | 2007-12-14 03:09:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-02-02 02:04:25 +0300 |
| commit | 6bae1d96c6d7dde078994f6cb98235fd46f8736b (patch) | |
| tree | f3ffd1b3ef665ef8c8434494f546f613be653286 /drivers/pci | |
| parent | 6015fbefc4dfe1706b64d33c256878b8296d1470 (diff) | |
| download | linux-6bae1d96c6d7dde078994f6cb98235fd46f8736b.tar.xz | |
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>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/quirks.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 2fbf60eac610..63357f07ca43 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. |