From: Heyi Guo <guoheyi@huawei.com>
To: <qemu-arm@nongnu.org>, <qemu-devel@nongnu.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Peter Maydell <peter.maydell@linaro.org>,
Marc Zyngier <marc.zyngier@arm.com>,
James Morse <james.morse@arm.com>, Heyi Guo <guoheyi@huawei.com>,
wanghaibin.wang@huawei.com, Dave Martin <Dave.Martin@arm.com>
Subject: [RFC v2 07/14] arm/sdei: add support to trigger event by GIC interrupt ID
Date: Tue, 5 Nov 2019 17:10:49 +0800 [thread overview]
Message-ID: <20191105091056.9541-8-guoheyi@huawei.com> (raw)
In-Reply-To: <20191105091056.9541-1-guoheyi@huawei.com>
Add an external interface to trigger an SDEI event bound to an
interrupt by providing GIC interrupt ID.
Signed-off-by: Heyi Guo <guoheyi@huawei.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: James Morse <james.morse@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
next prev parent reply other threads:[~2019-11-05 9:14 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-05 9:10 [RFC v2 00/14] Add SDEI support for arm64 Heyi Guo
2019-11-05 9:10 ` [RFC v2 01/14] update-linux-headers.sh: import linux/arm_sdei.h to standard-headers Heyi Guo
2019-11-05 9:10 ` [RFC v2 02/14] standard-headers: import arm_sdei.h Heyi Guo
2019-11-06 17:52 ` Cornelia Huck
2019-11-07 1:40 ` Guoheyi
2019-11-07 8:50 ` Cornelia Huck
2019-11-07 8:55 ` Michael S. Tsirkin
2019-11-05 9:10 ` [RFC v2 03/14] arm/sdei: add virtual device framework Heyi Guo
2019-11-05 9:10 ` [RFC v2 04/14] arm: add CONFIG_SDEI build flag Heyi Guo
2019-11-05 9:10 ` [RFC v2 05/14] arm/sdei: add support to handle SDEI requests from guest Heyi Guo
2019-11-05 9:10 ` [RFC v2 06/14] arm/sdei: add system reset callback Heyi Guo
2019-11-05 9:10 ` Heyi Guo [this message]
2019-11-05 9:10 ` [RFC v2 08/14] core/irq: add qemu_irq_remove_intercept interface Heyi Guo
2019-11-05 9:10 ` [RFC v2 09/14] arm/sdei: override qemu_irq handler when binding interrupt Heyi Guo
2019-11-05 9:10 ` [RFC v2 10/14] arm/sdei: add support to register interrupt bind notifier Heyi Guo
2019-11-05 9:10 ` [RFC v2 11/14] linux-headers/kvm.h: add capability to forward hypercall Heyi Guo
2019-11-06 17:55 ` Cornelia Huck
2019-11-07 1:44 ` Guoheyi
2019-11-07 8:57 ` Michael S. Tsirkin
2019-11-07 11:57 ` Guoheyi
2019-11-07 12:12 ` Cornelia Huck
2019-11-08 1:54 ` Guoheyi
2019-11-05 9:10 ` [RFC v2 12/14] arm/sdei: add stub to fix build failure when SDEI is not enabled Heyi Guo
2019-11-05 9:10 ` [RFC v2 13/14] arm/kvm: handle guest exit of hypercall Heyi Guo
2019-11-05 9:10 ` [RFC v2 14/14] virt/acpi: add SDEI table if SDEI is enabled Heyi Guo
2019-11-12 14:52 ` Igor Mammedov
2019-11-18 6:44 ` Guoheyi
2019-11-05 9:15 ` [RFC v2 00/14] Add SDEI support for arm64 Guoheyi
2019-11-05 9:36 ` no-reply
2019-11-05 9:38 ` no-reply
2019-11-18 6:55 ` Guoheyi
2019-11-18 13:35 ` Peter Maydell
2019-11-18 14:04 ` Guoheyi
2019-12-20 13:44 ` Peter Maydell
2019-12-23 8:20 ` Guoheyi
2020-02-04 8:26 ` Heyi Guo
2020-02-05 13:15 ` Marc Zyngier
2020-02-06 1:20 ` Heyi Guo
2020-02-06 17:30 ` Marc Zyngier
2020-02-07 10:52 ` James Morse
2020-02-07 11:08 ` Peter Maydell
2020-02-07 13:45 ` Heyi Guo
2020-02-07 13:17 ` Heyi Guo
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