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irqchip/gic-v4: Enable low-level GICv4 operations 

Get the show on the road...

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
hifive-unleashed-5.1
Marc Zyngier 2016-12-20 15:31:54 +00:00
parent 7954907bed
commit 3d63cb53e2
4 changed files with 18 additions and 2 deletions
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2
drivers/irqchip/Makefile
View File

@ -28,7 +28,7 @@ obj-$(CONFIG_ARM_GIC_PM) += irq-gic-pm.o
obj-$(CONFIG_ARCH_REALVIEW) += irq-gic-realview.o
obj-$(CONFIG_ARM_GIC_V2M) += irq-gic-v2m.o
obj-$(CONFIG_ARM_GIC_V3) += irq-gic-v3.o irq-gic-common.o
obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v3-its-pci-msi.o irq-gic-v3-its-platform-msi.o
obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v3-its-pci-msi.o irq-gic-v3-its-platform-msi.o irq-gic-v4.o
obj-$(CONFIG_PARTITION_PERCPU) += irq-partition-percpu.o
obj-$(CONFIG_HISILICON_IRQ_MBIGEN) += irq-mbigen.o
obj-$(CONFIG_ARM_NVIC) += irq-nvic.o

3
drivers/irqchip/irq-gic-v3-its.c
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@ -3226,7 +3226,8 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists,
has_v4 |= its->is_v4;
if (has_v4 & rdists->has_vlpis) {
if (its_init_vpe_domain()) {
if (its_init_vpe_domain() ||
its_init_v4(parent_domain, &its_vpe_domain_ops)) {
rdists->has_vlpis = false;
pr_err("ITS: Disabling GICv4 support\n");
}

13
drivers/irqchip/irq-gic-v4.c
View File

@ -210,3 +210,16 @@ int its_prop_update_vlpi(int irq, u8 config, bool inv)
return irq_set_vcpu_affinity(irq, &info);
}
int its_init_v4(struct irq_domain *domain, const struct irq_domain_ops *ops)
{
if (domain) {
pr_info("ITS: Enabling GICv4 support\n");
gic_domain = domain;
vpe_domain_ops = ops;
return 0;
}
pr_err("ITS: No GICv4 VPE domain allocated\n");
return -ENODEV;
}

2
include/linux/irqchip/arm-gic-v4.h
View File

@ -100,4 +100,6 @@ int its_get_vlpi(int irq, struct its_vlpi_map *map);
int its_unmap_vlpi(int irq);
int its_prop_update_vlpi(int irq, u8 config, bool inv);
int its_init_v4(struct irq_domain *domain, const struct irq_domain_ops *ops);
#endif