| Date | Mon, 05 Dec 2022 21:41:48 -0000 | From | "tip-bot2 for Thomas Gleixner" <> | Subject | [tip: irq/core] genirq/msi: Provide struct msi_map |
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The following commit has been merged into the irq/core branch of tip:
Commit-ID: 06bff9e347271566e8dd79e7c3eb971660209a00 Gitweb: https://git.kernel.org/tip/06bff9e347271566e8dd79e7c3eb971660209a00 Author: Thomas Gleixner <tglx@linutronix.de> AuthorDate: Fri, 25 Nov 2022 00:26:13 +01:00 Committer: Thomas Gleixner <tglx@linutronix.de> CommitterDate: Mon, 05 Dec 2022 22:22:33 +01:00
genirq/msi: Provide struct msi_map
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> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221124232326.326410494@linutronix.de
--- include/linux/msi_api.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/include/linux/msi_api.h b/include/linux/msi_api.h index 8640171..4cb7f4c 100644 --- 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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