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| author | Marc Zyngier <marc.zyngier@arm.com> | 2015-10-02 14:38:55 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2015-10-16 13:07:15 +0100 |
| commit | 82b9b4243c6d99d9e38087fa89183aa7479185e9 (patch) | |
| tree | abf24aebdcc73c8ef001e27aed472027ea7d4e9c /include/linux/of_irq.h | |
| parent | a251b263346e38b9fafebeb49ada9ce894882616 (diff) | |
| download | lwn-82b9b4243c6d99d9e38087fa89183aa7479185e9.tar.gz lwn-82b9b4243c6d99d9e38087fa89183aa7479185e9.zip | |
of/irq: Use the msi-map property to provide device-specific MSI domain
While msi-parent is used to point to the MSI controller that
works for all the devices behind a root complex, it doesn't
allow configurations where each individual device can be routed
to a separate MSI controller.
The msi-map property provides this flexibility (and much more),
so let's add a utility function that parses it, and return the
corresponding MSI domain.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include/linux/of_irq.h')
| -rw-r--r-- | include/linux/of_irq.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 62ae6edecfd5..65d969246a4d 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -49,6 +49,8 @@ extern int of_irq_to_resource_table(struct device_node *dev, extern struct irq_domain *of_msi_get_domain(struct device *dev, struct device_node *np, enum irq_domain_bus_token token); +extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, + u32 rid); #else static inline int of_irq_count(struct device_node *dev) { @@ -73,6 +75,11 @@ static inline struct irq_domain *of_msi_get_domain(struct device *dev, { return NULL; } +static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, + u32 rid) +{ + return NULL; +} #endif #if defined(CONFIG_OF) |