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genirq/msi: Make msi_get_virq() device domain aware

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In preparation of the upcoming per device multi MSI domain support, change
the interface to support lookups based on domain id and zero based index
within the domain.

Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
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/20221124230314.044613697@linutronix.de
This commit is contained in:
Ahmed S. Darwish
2022-11-25 00:24:25 +01:00
committed by Thomas Gleixner
parent 94ff94cfea
commit 98043704f3
2 changed files with 26 additions and 7 deletions
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14
include/linux/msi_api.h
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@@ -18,6 +18,18 @@ enum msi_domain_ids {
MSI_MAX_DEVICE_IRQDOMAINS,
};
unsigned int msi_get_virq(struct device *dev, unsigned int index);
unsigned int msi_domain_get_virq(struct device *dev, unsigned int domid, unsigned int index);
/**
* msi_get_virq - Lookup the Linux interrupt number for a MSI index on the default interrupt domain
* @dev: Device for which the lookup happens
* @index: The MSI index to lookup
*
* Return: The Linux interrupt number on success (> 0), 0 if not found
*/
static inline unsigned int msi_get_virq(struct device *dev, unsigned int index)
{
return msi_domain_get_virq(dev, MSI_DEFAULT_DOMAIN, index);
}
#endif