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| author | Marc Zyngier <marc.zyngier@arm.com> | 2014-11-24 14:35:09 +0000 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2014-11-26 15:55:11 +0000 |
| commit | 443acc4f37f61e343f3577dc28d7e7fd8b499465 (patch) | |
| tree | e75db0912f5bce93d2e0bf33f7a011ba9ff372e9 /drivers/irqchip | |
| parent | be091d468a0a09a7f4b1645e20cd6d36a353e51a (diff) | |
| download | op-kernel-dev-443acc4f37f61e343f3577dc28d7e7fd8b499465.zip op-kernel-dev-443acc4f37f61e343f3577dc28d7e7fd8b499465.tar.gz | |
irqchip: GICv3: Convert to domain hierarchy
In order to start supporting stacked domains, convert the GICv3
code base to the new domain hierarchy framework, which mostly
amounts to supporting the new alloc/free callbacks.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1416839720-18400-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/irqchip/irq-gic-v3.c | 42 |
2 files changed, 38 insertions, 5 deletions
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index b21f12f..4631685 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -14,6 +14,7 @@ config ARM_GIC_V3 bool select IRQ_DOMAIN select MULTI_IRQ_HANDLER + select IRQ_DOMAIN_HIERARCHY config ARM_NVIC bool diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index aa17ae8..4cb355a 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -594,14 +594,14 @@ static int gic_irq_domain_map(struct irq_domain *d, unsigned int irq, /* PPIs */ if (hw < 32) { irq_set_percpu_devid(irq); - irq_set_chip_and_handler(irq, &gic_chip, - handle_percpu_devid_irq); + irq_domain_set_info(d, irq, hw, &gic_chip, d->host_data, + handle_percpu_devid_irq, NULL, NULL); set_irq_flags(irq, IRQF_VALID | IRQF_NOAUTOEN); } /* SPIs */ if (hw >= 32 && hw < gic_data.irq_nr) { - irq_set_chip_and_handler(irq, &gic_chip, - handle_fasteoi_irq); + irq_domain_set_info(d, irq, hw, &gic_chip, d->host_data, + handle_fasteoi_irq, NULL, NULL); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } irq_set_chip_data(irq, d->host_data); @@ -633,9 +633,41 @@ static int gic_irq_domain_xlate(struct irq_domain *d, return 0; } +static int gic_irq_domain_alloc(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs, void *arg) +{ + int i, ret; + irq_hw_number_t hwirq; + unsigned int type = IRQ_TYPE_NONE; + struct of_phandle_args *irq_data = arg; + + ret = gic_irq_domain_xlate(domain, irq_data->np, irq_data->args, + irq_data->args_count, &hwirq, &type); + if (ret) + return ret; + + for (i = 0; i < nr_irqs; i++) + gic_irq_domain_map(domain, virq + i, hwirq + i); + + return 0; +} + +static void gic_irq_domain_free(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs) +{ + int i; + + for (i = 0; i < nr_irqs; i++) { + struct irq_data *d = irq_domain_get_irq_data(domain, virq + i); + irq_set_handler(virq + i, NULL); + irq_domain_reset_irq_data(d); + } +} + static const struct irq_domain_ops gic_irq_domain_ops = { - .map = gic_irq_domain_map, .xlate = gic_irq_domain_xlate, + .alloc = gic_irq_domain_alloc, + .free = gic_irq_domain_free, }; static int __init gic_of_init(struct device_node *node, struct device_node *parent) |
