[PATCH v4 09/20] irqchip/gic-v4.1: Plumb set_vcpu_affinity SGI callbacks
From: Marc Zyngier <maz@kernel.org>
Date: 2020-02-14 14:57:58
Also in:
kvm, kvmarm, lkml
Subsystem:
arm generic interrupt controller drivers, irqchip drivers, the rest · Maintainers:
Marc Zyngier, Thomas Gleixner, Linus Torvalds
As for VLPIs, there is a number of configuration bits that cannot be directly communicated through the normal irqchip API, and we have to use our good old friend set_vcpu_affinity. This is used to configure group and priority for a given vSGI. Signed-off-by: Marc Zyngier <maz@kernel.org> --- drivers/irqchip/irq-gic-v3-its.c | 18 ++++++++++++++++++ include/linux/irqchip/arm-gic-v4.h | 5 +++++ 2 files changed, 23 insertions(+)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index a9753435c4ff..a2e824eae43f 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c@@ -3969,6 +3969,23 @@ static int its_sgi_get_irqchip_state(struct irq_data *d, return 0; } +static int its_sgi_set_vcpu_affinity(struct irq_data *d, void *vcpu_info) +{ + struct its_vpe *vpe = irq_data_get_irq_chip_data(d); + struct its_cmd_info *info = vcpu_info; + + switch (info->cmd_type) { + case PROP_UPDATE_SGI: + vpe->sgi_config[d->hwirq].priority = info->priority; + vpe->sgi_config[d->hwirq].group = info->group; + its_configure_sgi(d, false); + return 0; + + default: + return -EINVAL; + } +} + static struct irq_chip its_sgi_irq_chip = { .name = "GICv4.1-sgi", .irq_mask = its_sgi_mask_irq,
@@ -3976,6 +3993,7 @@ static struct irq_chip its_sgi_irq_chip = { .irq_set_affinity = its_sgi_set_affinity, .irq_set_irqchip_state = its_sgi_set_irqchip_state, .irq_get_irqchip_state = its_sgi_get_irqchip_state, + .irq_set_vcpu_affinity = its_sgi_set_vcpu_affinity, }; static int its_sgi_irq_domain_alloc(struct irq_domain *domain,
diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h
index 30b4855bf766..a1a9d40266f5 100644
--- a/include/linux/irqchip/arm-gic-v4.h
+++ b/include/linux/irqchip/arm-gic-v4.h@@ -98,6 +98,7 @@ enum its_vcpu_info_cmd_type { SCHEDULE_VPE, DESCHEDULE_VPE, INVALL_VPE, + PROP_UPDATE_SGI, }; struct its_cmd_info {
@@ -110,6 +111,10 @@ struct its_cmd_info { bool g0en; bool g1en; }; + struct { + u8 priority; + bool group; + }; }; };
--
2.20.1
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