pci_enable_msix(9) - phpMan
PCI_ENABLE_MSIX(9) Hardware Interfaces PCI_ENABLE_MSIX(9)
NAME
pci_enable_msix - configure device's MSI-X capability structure
SYNOPSIS
int pci_enable_msix(struct pci_dev * dev, struct msix_entry * entries, int nvec);
ARGUMENTS
dev
pointer to the pci_dev data structure of MSI-X device function
entries
pointer to an array of MSI-X entries (optional)
nvec
number of MSI-X irqs requested for allocation by device driver
DESCRIPTION
Setup the MSI-X capability structure of device function with the number of requested irqs
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 irqs. A return of < 0 indicates a failure. Or a return
of > 0 indicates that driver request is exceeding the number of irqs or MSI-X vectors
available. Driver should use the returned value to re-send its request.
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 PCI_ENABLE_MSIX(9)
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