44 lines
1.5 KiB
Diff
44 lines
1.5 KiB
Diff
From 9a8e63285c30026a8fabaf0ed8af323eafd07539 Mon Sep 17 00:00:00 2001
|
|
From: ligd <liguiding1@xiaomi.com>
|
|
Date: Thu, 23 Jun 2022 00:41:13 +0800
|
|
Subject: [PATCH 07/14] openamp: add VIRTIO_RING_F_MUST_NOTIFY event
|
|
|
|
Change-Id: I455c4a5427fbcc60c6f61707c4304c12aa13ee58
|
|
Signed-off-by: ligd <liguiding1@xiaomi.com>
|
|
---
|
|
lib/include/openamp/virtqueue.h | 3 +++
|
|
lib/virtio/virtqueue.c | 3 +++
|
|
2 files changed, 6 insertions(+)
|
|
|
|
diff --git a/lib/include/openamp/virtqueue.h open-amp/lib/include/openamp/virtqueue.h
|
|
index 8194398..dd42c3a 100644
|
|
--- a/lib/include/openamp/virtqueue.h
|
|
+++ open-amp/lib/include/openamp/virtqueue.h
|
|
@@ -48,6 +48,9 @@ extern "C" {
|
|
/* Support to suppress interrupt until specific index is reached. */
|
|
#define VIRTIO_RING_F_EVENT_IDX (1 << 29)
|
|
|
|
+/* Support to can't suppress interrupt. */
|
|
+#define VIRTIO_RING_F_MUST_NOTIFY (1 << 30)
|
|
+
|
|
/* cache invalidation helpers */
|
|
#define CACHE_FLUSH(x, s) metal_cache_flush(x, s)
|
|
#define CACHE_INVALIDATE(x, s) metal_cache_invalidate(x, s)
|
|
diff --git a/lib/virtio/virtqueue.c open-amp/lib/virtio/virtqueue.c
|
|
index 363fda8..7ffe569 100644
|
|
--- a/lib/virtio/virtqueue.c
|
|
+++ open-amp/lib/virtio/virtqueue.c
|
|
@@ -609,6 +609,9 @@ static int vq_ring_must_notify(struct virtqueue *vq)
|
|
{
|
|
uint16_t new_idx, prev_idx, event_idx;
|
|
|
|
+ if (vq->vq_dev->features & VIRTIO_RING_F_MUST_NOTIFY)
|
|
+ return 1;
|
|
+
|
|
if (vq->vq_dev->features & VIRTIO_RING_F_EVENT_IDX) {
|
|
if (VIRTIO_ROLE_IS_DRIVER(vq->vq_dev)) {
|
|
/* CACHE: no need to invalidate avail */
|
|
--
|
|
2.34.1
|
|
|