(Please see Documentation/power/pci.txt for descriptions
of PCI Power Management and the related functions.)
- enable_wake Enable device to generate wake events from a low power
- state.
-
shutdown Hook into reboot_notifier_list (kernel/sys.c).
Intended to stop any idling DMA operations.
Useful for enabling wake-on-lan (NIC) or changing
call pci_set_mwi(). This enables the PCI_COMMAND bit for Mem-Wr-Inval
and also ensures that the cache line size register is set correctly.
Check the return value of pci_set_mwi() as not all architectures
-or chip-sets may support Memory-Write-Invalidate.
+or chip-sets may support Memory-Write-Invalidate. Alternatively,
+if Mem-Wr-Inval would be nice to have but is not required, call
+pci_try_set_mwi() to have the system do its best effort at enabling
+Mem-Wr-Inval.
3.2 Request MMIO/IOP resources
3.6 Register IRQ handler
~~~~~~~~~~~~~~~~~~~~~~~~
-While calling request_irq() is the the last step described here,
+While calling request_irq() is the last step described here,
this is often just another intermediate step to initialize a device.
This step can often be deferred until the device is opened for use.
pci_set_power_state() Set PCI Power Management state (0=D0 ... 3=D3)
pci_find_capability() Find specified capability in device's capability
list.
-pci_module_init() Inline helper function for ensuring correct
- pci_driver initialization and error handling.
pci_resource_start() Returns bus start address for a given PCI region
pci_resource_end() Returns bus end address for a given PCI region
pci_resource_len() Returns the byte length of a PCI region