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| author |   David Daney <david.daney@cavium.com> | 2015-10-08 15:10:49 -0700 |
|---|---|---|
| committer |   Marc Zyngier <marc.zyngier@arm.com> | 2015-10-16 13:07:12 +0100 |
| commit | b6eec9b717d4dcb39ef024b8a3b619a32468b01e (patch) | |
| tree | 938c3d37100f02ef76c4d197abc5cc662d3fa923 /include/linux/msi.h | |
| parent | of/irq: Add new function of_msi_map_rid() (diff) | |
| download | linux-dev-b6eec9b717d4dcb39ef024b8a3b619a32468b01e.tar.xz linux-dev-b6eec9b717d4dcb39ef024b8a3b619a32468b01e.zip | |
PCI/MSI: Add helper function pci_msi_domain_get_msi_rid().
Add pci_msi_domain_get_msi_rid() to return the MSI requester id (RID).
Initially needed by gic-v3 based systems. It will be used by follow on
patch to drivers/irqchip/irq-gic-v3-its-pci-msi.c
Initially supports mapping the RID via OF device tree. In the future,
this could be extended to use ACPI _IORT tables as well.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include/linux/msi.h')
| -rw-r--r-- | include/linux/msi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index 32a24b9a9556..87723751054d 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -294,6 +294,7 @@ irq_hw_number_t pci_msi_domain_calc_hwirq(struct pci_dev *dev, struct msi_desc *desc); int pci_msi_domain_check_cap(struct irq_domain *domain, struct msi_domain_info *info, struct device *dev); +u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev); #endif /* CONFIG_PCI_MSI_IRQ_DOMAIN */ #endif /* LINUX_MSI_H */ |