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authorJesse Barnes <jbarnes@virtuousgeek.org>2011-01-14 08:53:04 -0800
committerJesse Barnes <jbarnes@virtuousgeek.org>2011-05-11 15:18:53 -0700
commit51c2e0a7e5bc7ed1384cc68cfb95e702571500c9 (patch)
tree839dc5d6eb233b009c8802cb8cafde68f5a2ce6e /include/linux/pci.h
parent48a92a8179b3e677fac07db7bd109e68f020468c (diff)
PCI: add latency tolerance reporting enable/disable support
Latency tolerance reporting allows devices to send messages to the root complex indicating their latency tolerance for snooped & unsnooped memory transactions. Add support for enabling & disabling this feature, along with a routine to set the max latencies a device should send upstream. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 45a035cccd9..df4d69b8214 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -840,6 +840,11 @@ enum pci_obff_signal_type {
int pci_enable_obff(struct pci_dev *dev, enum pci_obff_signal_type);
void pci_disable_obff(struct pci_dev *dev);
+bool pci_ltr_supported(struct pci_dev *dev);
+int pci_enable_ltr(struct pci_dev *dev);
+void pci_disable_ltr(struct pci_dev *dev);
+int pci_set_ltr(struct pci_dev *dev, int snoop_lat_ns, int nosnoop_lat_ns);
+
/* For use by arch with custom probe code */
void set_pcie_port_type(struct pci_dev *pdev);
void set_pcie_hotplug_bridge(struct pci_dev *pdev);