From: Jason S. McMullan Date: Wed, 30 Sep 2015 06:35:07 +0000 (+0900) Subject: PCI: Limit config space size for Netronome NFP6000 family X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9f33a2ae59f24452c1076749deb615bccd435ca9;p=linux-beck.git PCI: Limit config space size for Netronome NFP6000 family 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 [simon: edited changelog] Signed-off-by: Simon Horman Signed-off-by: Bjorn Helgaas --- diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 7e327309cf69..83e93d7ca4b9 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -287,6 +287,17 @@ 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) {