From: George Cherian george.cherian@marvell.com
commit f338bb9f0179cb959977b74e8331b312264d720b upstream.
Enhance the ACS quirk for Cavium Processors. Add the root port vendor IDs for ThunderX2 and ThunderX3 series of processors.
[bhelgaas: add Fixes: and stable tag] Fixes: f2ddaf8dfd4a ("PCI: Apply Cavium ThunderX ACS quirk to more Root Ports") Link: https://lore.kernel.org/r/20191111024243.GA11408@dc5-eodlnx05.marvell.com Signed-off-by: George Cherian george.cherian@marvell.com Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Robert Richter rrichter@marvell.com Cc: stable@vger.kernel.org # v4.12+ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/pci/quirks.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)
--- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4252,15 +4252,21 @@ static int pci_quirk_amd_sb_acs(struct p
static bool pci_quirk_cavium_acs_match(struct pci_dev *dev) { + if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) + return false; + + switch (dev->device) { /* - * Effectively selects all downstream ports for whole ThunderX 1 - * family by 0xf800 mask (which represents 8 SoCs), while the lower - * bits of device ID are used to indicate which subdevice is used - * within the SoC. + * Effectively selects all downstream ports for whole ThunderX1 + * (which represents 8 SoCs). */ - return (pci_is_pcie(dev) && - (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) && - ((dev->device & 0xf800) == 0xa000)); + case 0xa000 ... 0xa7ff: /* ThunderX1 */ + case 0xaf84: /* ThunderX2 */ + case 0xb884: /* ThunderX3 */ + return true; + default: + return false; + } }
static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)