diff options
| author | Alex Williamson <alex.williamson@redhat.com> | 2014-02-03 21:27:33 (GMT) |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-02-11 20:49:56 (GMT) |
| commit | 2c74424470a0f98df8d6540642aff96d1a0b94b3 (patch) | |
| tree | 61f24a066645ddd7884d8545b579e0754c2763ce /drivers/pci/quirks.c | |
| parent | 38dbfb59d1175ef458d006556061adeaa8751b72 (diff) | |
| download | linux-2c74424470a0f98df8d6540642aff96d1a0b94b3.tar.xz | |
PCI: Add device-specific PCI ACS enable
Some devices support PCI ACS-like features, but don't report it using the
standard PCIe capabilities. We already provide hooks for device-specific
testing of ACS, but not for device-specific enabling of ACS. This provides
that setup hook.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 5cb726c..f681fb0 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3461,3 +3461,28 @@ int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags) return -ENOTTY; } + +static const struct pci_dev_enable_acs { + u16 vendor; + u16 device; + int (*enable_acs)(struct pci_dev *dev); +} pci_dev_enable_acs[] = { + { 0 } +}; + +void pci_dev_specific_enable_acs(struct pci_dev *dev) +{ + const struct pci_dev_enable_acs *i; + int ret; + + for (i = pci_dev_enable_acs; i->enable_acs; i++) { + if ((i->vendor == dev->vendor || + i->vendor == (u16)PCI_ANY_ID) && + (i->device == dev->device || + i->device == (u16)PCI_ANY_ID)) { + ret = i->enable_acs(dev); + if (ret >= 0) + return; + } + } +} |