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| author | Shradha Gupta <shradhagupta@linux.microsoft.com> | 2025-06-11 17:10:01 +0300 |
|---|---|---|
| committer | Shradha Gupta <shradhagupta@linux.microsoft.com> | 2025-06-17 09:15:14 +0300 |
| commit | 5da8a8b8090b5f79a816ba016af3a70a9d7287bf (patch) | |
| tree | 76ae40c6412f6a76af0bfa96f94a32dbbf42a5fd /include/linux | |
| parent | 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 (diff) | |
| download | linux-5da8a8b8090b5f79a816ba016af3a70a9d7287bf.tar.xz | |
PCI/MSI: Export pci_msix_prepare_desc() for dynamic MSI-X allocations
For supporting dynamic MSI-X vector allocation by PCI controllers, enabling
the flag MSI_FLAG_PCI_MSIX_ALLOC_DYN is not enough, msix_prepare_msi_desc()
to prepare the MSI descriptor is also needed.
Export pci_msix_prepare_desc() to allow PCI controllers to support dynamic
MSI-X vector allocation.
Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/msi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index 6863540f4b71..7f254bde5426 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -706,6 +706,8 @@ struct irq_domain *pci_msi_create_irq_domain(struct fwnode_handle *fwnode, struct irq_domain *parent); u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev); struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev); +void pci_msix_prepare_desc(struct irq_domain *domain, msi_alloc_info_t *arg, + struct msi_desc *desc); #else /* CONFIG_PCI_MSI */ static inline struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev) { |