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pci_enable_msix
Langue: en
Version: October 2010 (fedora - 01/12/10)
Section: 9 (Appels noyau Linux)
NAME
pci_enable_msix - configure device's MSI-X capability structureSYNOPSIS
- 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
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.
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