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authorDavid Daney <david.daney@cavium.com>2015-10-09 01:10:49 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2015-10-16 15:07:12 +0300
commitb6eec9b717d4dcb39ef024b8a3b619a32468b01e (patch)
tree938c3d37100f02ef76c4d197abc5cc662d3fa923 /include/linux/msi.h
parent8db02d8b4089fa8098a170738e8ae7939aa8ae7a (diff)
downloadlinux-b6eec9b717d4dcb39ef024b8a3b619a32468b01e.tar.xz
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.h1
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 */