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irqchip: gic-v2m: Add support for ARM GICv2m MSI(-X) doorbell

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ARM GICv2m specification extends GICv2 to support MSI(-X) with
a new register frame. This allows a GICv2 based system to support
MSI with minimal changes.

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
[maz: converted the driver to use stacked irq domains,
      updated changelog]
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1416941243-7181-2-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Suravee Suthikulpanit
2014-11-25 18:47:22 +00:00
committed by Jason Cooper
parent f4e27e30b3
commit 853a33ce69
6 changed files with 347 additions and 0 deletions
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2
include/linux/irqchip/arm-gic.h
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@@ -106,6 +106,8 @@ static inline void gic_init(unsigned int nr, int start,
gic_init_bases(nr, start, dist, cpu, 0, NULL);
}
int gicv2m_of_init(struct device_node *node, struct irq_domain *parent);
void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
int gic_get_cpu_id(unsigned int cpu);
void gic_migrate_target(unsigned int new_cpu_id);