Get the show on the road...
Reviewed-by: Thomas Gleixner <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
---
drivers/irqchip/Makefile | 2 +-
drivers/irqchip/irq-gic-v3-its.c | 3 ++-
drivers/irqchip/irq-gic-v4.c | 13 +++++++++++++
include/linux/irqchip/arm-gic-v4.h | 2 ++
4 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index b64c59b838a0..4ca95310254b 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -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
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 3784bea2b994..284e6e6785cf 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -2970,7 +2970,8 @@ 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");
}
diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c
index 4ce5fdd1db15..7f573d65f440 100644
--- a/drivers/irqchip/irq-gic-v4.c
+++ b/drivers/irqchip/irq-gic-v4.c
@@ -194,3 +194,16 @@ 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;
+}
diff --git a/include/linux/irqchip/arm-gic-v4.h
b/include/linux/irqchip/arm-gic-v4.h
index 843c9ff29269..862d20ab67d0 100644
--- a/include/linux/irqchip/arm-gic-v4.h
+++ b/include/linux/irqchip/arm-gic-v4.h
@@ -97,4 +97,6 @@ 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
--
2.11.0
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