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| author | George Cherian <george.cherian@marvell.com> | 2019-11-11 02:43:03 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-21 10:57:24 +0100 |
| commit | dc6f9b00b9194be813011d8ab071471fb0283e61 (patch) | |
| tree | ccf75138ed9f5982dc4a37b2a855d5614dd0250d /drivers/pci | |
| parent | 8d588ce7cb12333d86745bbf968fb0c615f4c1e4 (diff) | |
| download | linux-stable-dc6f9b00b9194be813011d8ab071471fb0283e61.tar.gz linux-stable-dc6f9b00b9194be813011d8ab071471fb0283e61.tar.bz2 linux-stable-dc6f9b00b9194be813011d8ab071471fb0283e61.zip | |
PCI: Apply Cavium ACS quirk to ThunderX2 and ThunderX3
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>
Diffstat (limited to 'drivers/pci')
| -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 8833abbf25be..20a57a48ae1e 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4219,15 +4219,21 @@ 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) |