Provided by: linux-doc-2.6.15_2.6.15-23.39_all
pci_enable_msix - configure device’s MSI-X capability structure
int pci_enable_msix (struct pci_dev * dev,
struct msix_entry * entries, int nvec);
dev pointer to the pci_dev data structure of MSI-X device function
pointer to an array of MSI-X entries
nvec number of MSI-X vectors requested for allocation by device
Setup the MSI-X capability structure of device function with the number
of requested vectors upon its software driver call to request for MSI-X
mode enabled on its hardware device function. A return of zero
indicates the successful configuration of MSI-X capability structure
with new allocated MSI-X vectors. A return of < 0 indicates a failure.
Or a return of > 0 indicates that driver request is exceeding the
number of vectors available. Driver should use the returned value to
re-send its request.