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authorMarc Zyngier <marc.zyngier@arm.com>2015-10-02 14:38:55 +0100
committerMarc Zyngier <marc.zyngier@arm.com>2015-10-16 13:07:15 +0100
commit82b9b4243c6d99d9e38087fa89183aa7479185e9 (patch)
treeabf24aebdcc73c8ef001e27aed472027ea7d4e9c /include/linux/of_irq.h
parenta251b263346e38b9fafebeb49ada9ce894882616 (diff)
downloadlinux-stericsson-82b9b4243c6d99d9e38087fa89183aa7479185e9.tar.gz
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.h7
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)