Messages in this thread Patch in this message | | | From | Thomas Gleixner <> | Subject | [patch V2 18/33] genirq/msi: Provide struct msi_map | Date | Mon, 21 Nov 2022 15:38:08 +0100 (CET) |
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A simple struct to hold a MSI index / Linux interrupt number pair. It will be returned from the dynamic vector allocation function and handed back to the corresponding free() function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- include/linux/msi_api.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
--- a/include/linux/msi_api.h +++ b/include/linux/msi_api.h @@ -18,6 +18,19 @@ enum msi_domain_ids { MSI_MAX_DEVICE_IRQDOMAINS, }; +/** + * msi_map - Mapping between MSI index and Linux interrupt number + * @index: The MSI index, e.g. slot in the MSI-X table or + * a software managed index if >= 0. If negative + * the allocation function failed and it contains + * the error code. + * @virq: The associated Linux interrupt number + */ +struct msi_map { + int index; + int virq; +}; + unsigned int msi_domain_get_virq(struct device *dev, unsigned int domid, unsigned int index); /**
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