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| PCI_ENABLE_MSIX_RANG(9) | Hardware Interfaces | PCI_ENABLE_MSIX_RANG(9) |
NAME¶
pci_enable_msix_range - configure device's MSI-X capability structure
SYNOPSIS¶
int pci_enable_msix_range(struct pci_dev * dev, struct msix_entry * entries, int minvec, int maxvec);
ARGUMENTS¶
struct pci_dev * dev
pointer to the pci_dev data structure of MSI-X device
function
struct msix_entry * entries
pointer to an array of MSI-X entries
int minvec
minimum number of MSI-X irqs requested
int maxvec
maximum number of MSI-X irqs requested
DESCRIPTION¶
Setup the MSI-X capability structure of device function with a maximum possible number of interrupts in the range between minvec and maxvec upon its software driver call to request for MSI-X mode enabled on its hardware device function. It returns a negative errno if an error occurs. If it succeeds, it returns the actual number of interrupts allocated and indicates the successful configuration of MSI-X capability structure with new allocated MSI-X interrupts.
COPYRIGHT¶
| July 2017 | Kernel Hackers Manual 4.11 |