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| author | George Cherian <george.cherian@marvell.com> | 2019-11-11 02:43:03 +0000 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-11-11 16:59:40 -0600 |
| commit | f338bb9f0179cb959977b74e8331b312264d720b (patch) | |
| tree | c4f1ed8b8166b4cbc7a264d33d5530e0289c8d96 /drivers/pci/quirks.c | |
| parent | 35ff867b76576e32f34c698ccd11343f7d616204 (diff) | |
| download | lwn-f338bb9f0179cb959977b74e8331b312264d720b.tar.gz lwn-f338bb9f0179cb959977b74e8331b312264d720b.zip | |
PCI: Apply Cavium ACS quirk to ThunderX2 and ThunderX3
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+
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index d5d57cd91a5e..2544e210b984 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4347,15 +4347,21 @@ static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags) 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) |