diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-12-20 15:31:54 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2017-08-31 15:31:42 +0100 |
| commit | 3d63cb53e221d8ab347e94aeac0b5511857beb7f (patch) | |
| tree | ea949ba362aafee85b909651c1a94b6973fed24c | |
| parent | 7954907bedafd0f8e81633803945cb304793b29d (diff) | |
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>
| -rw-r--r-- | drivers/irqchip/Makefile | 2 | ||||
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 3 | ||||
| -rw-r--r-- | drivers/irqchip/irq-gic-v4.c | 13 | ||||
| -rw-r--r-- | 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 2c630574986f..845abc107ad5 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 d79bfdbd506b..a93816cb2a98 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -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"); } diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c index 8eb2ad39322e..2370e6d9e603 100644 --- a/drivers/irqchip/irq-gic-v4.c +++ b/drivers/irqchip/irq-gic-v4.c @@ -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; +} diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h index e22f878ad017..58a4d89aa82c 100644 --- a/include/linux/irqchip/arm-gic-v4.h +++ b/include/linux/irqchip/arm-gic-v4.h @@ -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 |