Commit-ID: eab84318c2811e3f38c080efcc7f709f51bb8370
Gitweb: http://git.kernel.org/tip/eab84318c2811e3f38c080efcc7f709f51bb8370
Author: Marc Zyngier <marc.zyngier@xxxxxxx>
AuthorDate: Tue, 20 Dec 2016 15:31:02 +0000
Committer: Marc Zyngier <marc.zyngier@xxxxxxx>
CommitDate: Thu, 31 Aug 2017 15:31:41 +0100
irqchip/gic-v4: Add VPE command interface
Add the required interfaces to schedule a VPE and perform a
VINVALL command.
Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
drivers/irqchip/irq-gic-v4.c | 25 +++++++++++++++++++++++++
include/linux/irqchip/arm-gic-v4.h | 2 ++
2 files changed, 27 insertions(+)
diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c
index 3d4bede..d3f8b7a 100644
--- a/drivers/irqchip/irq-gic-v4.c
+++ b/drivers/irqchip/irq-gic-v4.c
@@ -72,3 +72,28 @@ void its_free_vcpu_irqs(struct its_vm *vm)
irq_domain_remove(vm->domain);
irq_domain_free_fwnode(vm->fwnode);
}
+
+static int its_send_vpe_cmd(struct its_vpe *vpe, struct its_cmd_info *info)
+{
+ return irq_set_vcpu_affinity(vpe->irq, info);
+}
+
+int its_schedule_vpe(struct its_vpe *vpe, bool on)
+{
+ struct its_cmd_info info;
+
+ WARN_ON(preemptible());
+
+ 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 3dc811d..6450f3e 100644
--- a/include/linux/irqchip/arm-gic-v4.h
+++ b/include/linux/irqchip/arm-gic-v4.h
@@ -93,5 +93,7 @@ struct its_cmd_info {
int its_alloc_vcpu_irqs(struct its_vm *vm);
void its_free_vcpu_irqs(struct its_vm *vm);
+int its_schedule_vpe(struct its_vpe *vpe, bool on);
+int its_invall_vpe(struct its_vpe *vpe);
#endif
--
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