AMD has confirmed that peer-to-peer between two southbridge functions does not occur. Joel Schopp at https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15 > +-14.4-[01]----05.0 Dialogic Corporation PRI > The legacy PCI should be isolated from the other devices identified. > Not sure what is going on here. > > +-14.5 Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller > This OHCI Controller should also be isolated from the other devices. Signed-off-by: Marti Raudsepp <marti@xxxxxxxxx> --- drivers/pci/quirks.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 80c2d01..ce43316 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3582,6 +3582,11 @@ struct pci_dev *pci_get_dma_source(struct pci_dev *dev) * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller * 1002:4384 SBx00 PCI to PCI Bridge * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller + * + * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15 + * + * 1022:780f [AMD] FCH PCI Bridge + * 1022:7809 [AMD] FCH USB OHCI Controller */ static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags) { @@ -3675,6 +3680,8 @@ static const struct pci_dev_acs_enabled { { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs }, + { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs }, + { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs }, { 0 } }; -- 2.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
