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>
diff --git a/include/linux/pci.h b/include/linux/pci.h
index fb57c89..0f76d0f 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1510,6 +1510,7 @@
void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
struct pci_dev *pci_get_dma_source(struct pci_dev *dev);
int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
+void pci_dev_specific_enable_acs(struct pci_dev *dev);
#else
static inline void pci_fixup_device(enum pci_fixup_pass pass,
struct pci_dev *dev) { }
@@ -1522,6 +1523,7 @@
{
return -ENOTTY;
}
+static inline void pci_dev_specific_enable_acs(struct pci_dev *dev) { }
#endif
void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);