68 lines
2.3 KiB
Diff
68 lines
2.3 KiB
Diff
From 3f5311e1a80539a9cc21905fd3134709417e3747 Mon Sep 17 00:00:00 2001
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From: Cindy Lu <lulu@redhat.com>
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Date: Thu, 22 Dec 2022 15:04:50 +0800
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Subject: [PATCH] virtio-mmio: add support for configure interrupt
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Add configure interrupt support in virtio-mmio bus.
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add function to set configure guest notifier.
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Signed-off-by: Cindy Lu <lulu@redhat.com>
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Message-Id: <20221222070451.936503-10-lulu@redhat.com>
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Acked-by: Jason Wang <jasowang@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: fangyi <eric.fangyi@huawei.com>
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---
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hw/virtio/virtio-mmio.c | 27 +++++++++++++++++++++++++++
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1 file changed, 27 insertions(+)
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diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
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index 72da12fea5..508dd4cdb7 100644
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--- a/hw/virtio/virtio-mmio.c
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+++ b/hw/virtio/virtio-mmio.c
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@@ -673,7 +673,30 @@ static int virtio_mmio_set_guest_notifier(DeviceState *d, int n, bool assign,
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return 0;
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}
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+static int virtio_mmio_set_config_guest_notifier(DeviceState *d, bool assign,
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+ bool with_irqfd)
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+{
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+ VirtIOMMIOProxy *proxy = VIRTIO_MMIO(d);
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+ VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
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+ VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
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+ EventNotifier *notifier = virtio_config_get_guest_notifier(vdev);
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+ int r = 0;
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+ if (assign) {
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+ r = event_notifier_init(notifier, 0);
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+ if (r < 0) {
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+ return r;
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+ }
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+ virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irqfd);
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+ } else {
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+ virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irqfd);
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+ event_notifier_cleanup(notifier);
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+ }
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+ if (vdc->guest_notifier_mask && vdev->use_guest_notifier_mask) {
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+ vdc->guest_notifier_mask(vdev, VIRTIO_CONFIG_IRQ_IDX, !assign);
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+ }
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+ return r;
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+}
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static int virtio_mmio_set_guest_notifiers(DeviceState *d, int nvqs,
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bool assign)
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{
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@@ -695,6 +718,10 @@ static int virtio_mmio_set_guest_notifiers(DeviceState *d, int nvqs,
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goto assign_error;
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}
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}
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+ r = virtio_mmio_set_config_guest_notifier(d, assign, with_irqfd);
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+ if (r < 0) {
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+ goto assign_error;
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+ }
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return 0;
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--
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2.27.0
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