Add an external interface to trigger an SDEI event bound to an
interrupt by providing GIC interrupt ID.
Signed-off-by: Heyi Guo <guoh...@huawei.com>
Cc: Peter Maydell <peter.mayd...@linaro.org>
Cc: Dave Martin <dave.mar...@arm.com>
Cc: Marc Zyngier <marc.zyng...@arm.com>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: James Morse <james.mo...@arm.com>
---
target/arm/sdei.c | 37 +++++++++++++++++++++++++++++++++++++
target/arm/sdei.h | 7 +++++++
2 files changed, 44 insertions(+)
diff --git a/target/arm/sdei.c b/target/arm/sdei.c
index 6af4a9044b..713ac97775 100644
--- a/target/arm/sdei.c
+++ b/target/arm/sdei.c
@@ -476,6 +476,28 @@ static int64_t sdei_version(QemuSDEState *s, CPUState *cs,
struct kvm_run *run)
(0ULL << SDEI_VERSION_MINOR_SHIFT);
}
+static bool inject_event(QemuSDEState *s, CPUState *cs, int32_t event, int irq)
+{
+ QemuSDE *sde;
+
+ if (event < 0) {
+ return false;
+ }
+ sde = get_sde_no_check(s, event, cs);
+ if (sde->event_id == SDEI_INVALID_EVENT_ID) {
+ put_sde(sde, cs);
+ return false;
+ }
+ if (irq > 0 && sde->prop->interrupt != irq) {
+ /* Someone unbinds the interrupt! */
+ put_sde(sde, cs);
+ return false;
+ }
+ sde->pending = true;
+ dispatch_single(s, sde, cs);
+ return true;
+}
+
static int64_t unregister_single_sde(QemuSDEState *s, int32_t event,
CPUState *cs, bool force)
{
@@ -1104,6 +1126,21 @@ void sdei_handle_request(CPUState *cs, struct kvm_run
*run)
}
}
+bool trigger_sdei_by_irq(int cpu, int irq)
+{
+ QemuSDEState *s = sde_state;
+
+ if (!s || irq >= ARRAY_SIZE(s->irq_map)) {
+ return false;
+ }
+
+ if (s->irq_map[irq] == SDEI_INVALID_EVENT_ID) {
+ return false;
+ }
+
+ return inject_event(s, qemu_get_cpu(cpu), s->irq_map[irq], irq);
+}
+
static void sde_array_init(QemuSDE **array, int count)
{
int i;
diff --git a/target/arm/sdei.h b/target/arm/sdei.h
index 828f70bbf1..5ecc32d667 100644
--- a/target/arm/sdei.h
+++ b/target/arm/sdei.h
@@ -31,4 +31,11 @@
void sdei_handle_request(CPUState *cs, struct kvm_run *run);
+/*
+ * Trigger an SDEI event bound to an interrupt.
+ * Return true if event has been triggered successfully.
+ * Return false if event has not been triggered for some reason.
+ */
+bool trigger_sdei_by_irq(int cpu, int irq);
+
#endif
--
2.19.1
