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- wheezy 3.2.78-1
PCI_ENABLE_OBFF(9) | Hardware Interfaces | PCI_ENABLE_OBFF(9) |
NAME¶
pci_enable_obff - enable optimized buffer flush/fillSYNOPSIS¶
int
pci_enable_obff(struct pci_dev * dev,
enum pci_obff_signal_type type);
ARGUMENTS¶
devPCI device
type
type of signaling to use
DESCRIPTION¶
Try to enable type OBFF signaling on dev. It will try using WAKE# signaling if possible, falling back to message signaling only if WAKE# isn't supported. type should indicate whether the PCIe link be brought out of L0s or L1 to send the message. It should be either PCI_EXP_OBFF_SIGNAL_ALWAYS or PCI_OBFF_SIGNAL_L0. If your device can benefit from receiving all messages, even at the power cost of bringing the link back up from a low power state, use PCI_EXP_OBFF_SIGNAL_ALWAYS. Otherwise, use PCI_OBFF_SIGNAL_L0 (the preferred type).RETURNS¶
Zero on success, appropriate error number on failure.COPYRIGHT¶
March 2016 | Kernel Hackers Manual 3.2. |