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0a26f09c6b
1. add cpuname config for the rpmsg virtio devices, so the rpmsg virtio driver can get the local and remote cpuname from the virtio config space, and we can distinguish the differnt channel when there are two rpmsg virtio devices in the same resource table; 2. optimize the remoteproc virtio transport layer to make it can work with all the virtio devices instead only work with rpmsg virtio devices; Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
From 7c6597d46da6d1c3c085dda33262c89b633707ae Mon Sep 17 00:00:00 2001
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From: ligd <liguiding1@xiaomi.com>
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Date: Thu, 23 Jun 2022 00:41:13 +0800
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Subject: [PATCH 05/12] openamp: add VIRTIO_RING_F_MUST_NOTIFY event
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Signed-off-by: ligd <liguiding1@xiaomi.com>
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---
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lib/include/openamp/virtqueue.h | 3 +++
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lib/virtio/virtqueue.c | 3 +++
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2 files changed, 6 insertions(+)
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diff --git a/lib/include/openamp/virtqueue.h open-amp/lib/include/openamp/virtqueue.h
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index 7921948c8e..92a4a87f10 100644
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--- a/lib/include/openamp/virtqueue.h
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+++ open-amp/lib/include/openamp/virtqueue.h
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@@ -48,6 +48,9 @@ extern "C" {
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/* Support to suppress interrupt until specific index is reached. */
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#define VIRTIO_RING_F_EVENT_IDX (1 << 29)
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+/* Support to can't suppress interrupt. */
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+#define VIRTIO_RING_F_MUST_NOTIFY (1 << 30)
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+
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#if defined(VIRTIO_USE_DCACHE)
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#define VRING_FLUSH(x, s) metal_cache_flush(x, s)
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#define VRING_INVALIDATE(x, s) metal_cache_invalidate(x, s)
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diff --git a/lib/virtio/virtqueue.c open-amp/lib/virtio/virtqueue.c
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index ed7af3fccd..d2738faaba 100644
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--- a/lib/virtio/virtqueue.c
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+++ open-amp/lib/virtio/virtqueue.c
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@@ -633,6 +633,9 @@ static int vq_ring_must_notify(struct virtqueue *vq)
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{
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uint16_t new_idx, prev_idx, event_idx;
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+ if (vq->vq_dev->features & VIRTIO_RING_F_MUST_NOTIFY)
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+ return 1;
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+
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if (vq->vq_dev->features & VIRTIO_RING_F_EVENT_IDX) {
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if (VIRTIO_ROLE_IS_DRIVER(vq->vq_dev)) {
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/* CACHE: no need to invalidate avail */
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--
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2.34.1
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