1PCI_ENABLE_MSIX(9) Hardware Interfaces PCI_ENABLE_MSIX(9)
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6 pci_enable_msix - configure device's MSI-X capability structure
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9 int pci_enable_msix(struct pci_dev * dev, struct msix_entry * entries,
10 int nvec);
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13 dev
14 pointer to the pci_dev data structure of MSI-X device function
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16 entries
17 pointer to an array of MSI-X entries
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19 nvec
20 number of MSI-X irqs requested for allocation by device driver
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23 Setup the MSI-X capability structure of device function with the number
24 of requested irqs upon its software driver call to request for MSI-X
25 mode enabled on its hardware device function. A return of zero
26 indicates the successful configuration of MSI-X capability structure
27 with new allocated MSI-X irqs. A return of < 0 indicates a failure. Or
28 a return of > 0 indicates that driver request is exceeding the number
29 of irqs or MSI-X vectors available. Driver should use the returned
30 value to re-send its request.
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33Kernel Hackers Manual 2.6. November 2011 PCI_ENABLE_MSIX(9)