Add the required interfaces to schedule a VPE and perform a
VINVALL command.
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
drivers/irqchip/irq-gic-v4.c | 31 +++++++++++++++++++++++++++++++
include/linux/irqchip/arm-gic-v4.h | 2 ++
2 files changed, 33 insertions(+)
diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c
index b9a0b34..7d74089 100644
--- a/drivers/irqchip/irq-gic-v4.c
+++ b/drivers/irqchip/irq-gic-v4.c
@@ -109,3 +109,34 @@ void its_free_vcpu_irqs(struct its_vm *vm, int nr_vpes)
irq_domain_free_irqs(irq, nr_vpes);
}
+
+static int its_send_vpe_cmd(struct its_vpe *vpe, struct its_cmd_info *info)
+{
+ unsigned int irq;
+ irq_hw_number_t hwirq;
+
+ WARN_ON(preemptible());
+
+ hwirq = vpe->vpe_db_lpi - vpe->its_vm->db_lpi_base;
+ irq = irq_find_mapping(vpe->its_vm->domain, hwirq);
+
+ return irq_set_vcpu_affinity(irq, info);
+}
+
+int its_schedule_vpe(struct its_vpe *vpe, bool on)
+{
+ struct its_cmd_info info;
+
+ info.cmd_type = on ? SCHEDULE_VPE : DESCHEDULE_VPE;
+
+ return its_send_vpe_cmd(vpe, &info);
+}
+
+int its_invall_vpe(struct its_vpe *vpe)
+{
+ struct its_cmd_info info = {
+ .cmd_type = INVALL_VPE,
+ };
+
+ return its_send_vpe_cmd(vpe, &info);
+}
diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h
index 2463d70..1c58add 100644
--- a/include/linux/irqchip/arm-gic-v4.h
+++ b/include/linux/irqchip/arm-gic-v4.h
@@ -91,5 +91,7 @@ struct its_cmd_info {
int its_alloc_vcpu_irqs(struct its_vm *vm, struct its_vpe **vpes, int nr_vpes);
void its_free_vcpu_irqs(struct its_vm *vm, int nr_vpes);
+int its_schedule_vpe(struct its_vpe *vpe, bool on);
+int its_invall_vpe(struct its_vpe *vpe);
#endif
--
2.1.4
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