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| author |   Christoph Hellwig <hch@lst.de> | 2016-07-12 18:20:17 +0900 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2016-07-21 15:50:07 -0500 |
| commit | aff171641d181ea573380efc3f559c9de4741fc5 (patch) | |
| tree | 4db964cfabf120e9e9f1cba6f8d1707ae5bc8159 /drivers/irqchip | |
| parent | PCI: Make the "entries" argument to pci_enable_msix() optional (diff) | |
| download | linux-dev-aff171641d181ea573380efc3f559c9de4741fc5.tar.xz linux-dev-aff171641d181ea573380efc3f559c9de4741fc5.zip | |
PCI: Provide sensible IRQ vector alloc/free routines
Add a function to allocate and free a range of interrupt vectors, using
MSI-X, MSI or legacy vectors (in that order) based on the capabilities of
the underlying device and PCIe complex.
Additionally a new helper is provided to get the Linux IRQ number for given
device-relative vector so that the drivers don't need to allocate their own
arrays to keep track of the vectors for the multi vector MSI-X case.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alexander Gordeev <agordeev@redhat.com>
Diffstat (limited to 'drivers/irqchip')
0 files changed, 0 insertions, 0 deletions