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| author | Marc Zyngier <maz@kernel.org> | 2020-03-04 20:33:19 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-03-24 12:15:51 +0000 |
| commit | 05d32df13c6b3c0850b68928048536e9a736d520 (patch) | |
| tree | 77ba7637c5e7bb4406cf8b3b35c9e9d1bc56668a /drivers/irqchip | |
| parent | 7017ff0ee1de9d45fafee88a4e7890cce92f482e (diff) | |
| download | linux-05d32df13c6b3c0850b68928048536e9a736d520.tar.bz2 | |
irqchip/gic-v4.1: Plumb set_vcpu_affinity SGI callbacks
Just like for vLPIs, there is some configuration information that cannot
be directly communicated through the normal irqchip API, and we have to
use our good old friend set_vcpu_affinity as a side-band communication
mechanism.
This is used to configure group and priority for a given vSGI.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20200304203330.4967-13-maz@kernel.org
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index c614f0c19807..aae53326d26f 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -4047,6 +4047,23 @@ out: 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_VSGI: + 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, @@ -4054,6 +4071,7 @@ 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, |