From: Marc Zyngier <marc.zyngier@arm.com>
Date: Wed, 21 Dec 2016 21:50:32 +0000
Subject: irqchip/gic-v4: Add VLPI configuration interface
Patch-mainline: v4.14-rc1
Git-commit: f2eac75de435871d5a497f8b557874a2a8a7b264
References: FATE#323954
Add the required interfaces to map, unmap and update a VLPI.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Alexander Graf <agraf@suse.de>
---
drivers/irqchip/irq-gic-v4.c | 42 +++++++++++++++++++++++++++++++++++++
include/linux/irqchip/arm-gic-v4.h | 4 +++
2 files changed, 46 insertions(+)
--- a/drivers/irqchip/irq-gic-v4.c
+++ b/drivers/irqchip/irq-gic-v4.c
@@ -97,3 +97,45 @@
return its_send_vpe_cmd(vpe, &info);
}
+
+int its_map_vlpi(int irq, struct its_vlpi_map *map)
+{
+ struct its_cmd_info info = {
+ .cmd_type = MAP_VLPI,
+ .map = map,
+ };
+
+ /*
+ * The host will never see that interrupt firing again, so it
+ * is vital that we don't do any lazy masking.
+ */
+ irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
+
+ return irq_set_vcpu_affinity(irq, &info);
+}
+
+int its_get_vlpi(int irq, struct its_vlpi_map *map)
+{
+ struct its_cmd_info info = {
+ .cmd_type = GET_VLPI,
+ .map = map,
+ };
+
+ return irq_set_vcpu_affinity(irq, &info);
+}
+
+int its_unmap_vlpi(int irq)
+{
+ irq_clear_status_flags(irq, IRQ_DISABLE_UNLAZY);
+ return irq_set_vcpu_affinity(irq, NULL);
+}
+
+int its_prop_update_vlpi(int irq, u8 config, bool inv)
+{
+ struct its_cmd_info info = {
+ .cmd_type = inv ? PROP_UPDATE_AND_INV_VLPI : PROP_UPDATE_VLPI,
+ .config = config,
+ };
+
+ return irq_set_vcpu_affinity(irq, &info);
+}
--- a/include/linux/irqchip/arm-gic-v4.h
+++ b/include/linux/irqchip/arm-gic-v4.h
@@ -95,5 +95,9 @@
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);
+int its_map_vlpi(int irq, struct its_vlpi_map *map);
+int its_get_vlpi(int irq, struct its_vlpi_map *map);
+int its_unmap_vlpi(int irq);
+int its_prop_update_vlpi(int irq, u8 config, bool inv);
#endif