Implement mask/unmask for virtual SGIs by calling into the
configuration helper.

Signed-off-by: Marc Zyngier <[email protected]>
Reviewed-by: Zenghui Yu <[email protected]>
Reviewed-by: Eric Auger <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
 drivers/irqchip/irq-gic-v3-its.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index c6aa4b4147ac..d89b9d78394d 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -3944,6 +3944,22 @@ static void its_configure_sgi(struct irq_data *d, bool 
clear)
        its_send_single_vcommand(find_4_1_its(), its_build_vsgi_cmd, &desc);
 }
 
+static void its_sgi_mask_irq(struct irq_data *d)
+{
+       struct its_vpe *vpe = irq_data_get_irq_chip_data(d);
+
+       vpe->sgi_config[d->hwirq].enabled = false;
+       its_configure_sgi(d, false);
+}
+
+static void its_sgi_unmask_irq(struct irq_data *d)
+{
+       struct its_vpe *vpe = irq_data_get_irq_chip_data(d);
+
+       vpe->sgi_config[d->hwirq].enabled = true;
+       its_configure_sgi(d, false);
+}
+
 static int its_sgi_set_affinity(struct irq_data *d,
                                const struct cpumask *mask_val,
                                bool force)
@@ -3958,6 +3974,8 @@ static int its_sgi_set_affinity(struct irq_data *d,
 
 static struct irq_chip its_sgi_irq_chip = {
        .name                   = "GICv4.1-sgi",
+       .irq_mask               = its_sgi_mask_irq,
+       .irq_unmask             = its_sgi_unmask_irq,
        .irq_set_affinity       = its_sgi_set_affinity,
 };
 
-- 
2.20.1

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