diff options
| author | Jason S. McMullan <jason.mcmullan@netronome.com> | 2015-09-30 15:35:07 +0900 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-10-12 15:28:19 +0100 |
| commit | 86f5c4bca0c767c613fbf6bd66c26bc4e2d9fbdd (patch) | |
| tree | 0216ba6fb33f04f779abd8e75d719209e72fe3e1 | |
| parent | 5fa2b7b00900a686d13fc6a28258d6c3529d28c7 (diff) | |
PCI: Limit config space size for Netronome NFP6000 family
commit 9f33a2ae59f24452c1076749deb615bccd435ca9 upstream.
The NFP6000 has an erratum where reading/writing to PCI config space
addresses above 0x600 can cause the NFP to generate PCIe completion
timeouts.
Limit the NFP6000's config space size to 0x600 bytes.
Signed-off-by: Jason S. McMullan <jason.mcmullan@netronome.com>
[simon: edited changelog]
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/pci/quirks.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index fe7177c94564..3f523c050a8f 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -288,6 +288,17 @@ static void quirk_citrine(struct pci_dev *dev) } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine); +/* + * This chip can cause bus lockups if config addresses above 0x600 + * are read or written. + */ +static void quirk_nfp6000(struct pci_dev *dev) +{ + dev->cfg_size = 0x600; +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000); + /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */ static void quirk_extend_bar_to_page(struct pci_dev *dev) { |