From: Cindy Lu <lulu@redhat.com>
To: lulu@redhat.com, qemu-devel@nongnu.org
Cc: "Jason Wang" <jasowang@redhat.com>,
virtio-fs@redhat.com, "Stefan Hajnoczi" <stefanha@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Gonglei (Arei)" <arei.gonglei@huawei.com>,
"Gerd Hoffmann" <kraxel@redhat.com>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>
Subject: [Virtio-fs] [PATCH v13 09/10] virtio-mmio: add support for configure interrupt
Date: Wed, 20 Jul 2022 21:12:03 +0800 [thread overview]
Message-ID: <20220720131204.591104-10-lulu@redhat.com> (raw)
Add configure interrupt support in virtio-mmio bus.
add function to set configure guest notifier.
Signed-off-by: Cindy Lu <lulu@redhat.com>
---
hw/virtio/virtio-mmio.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index 688eccda94..5c613a96d9 100644
--- a/hw/virtio/virtio-mmio.c
+++ b/hw/virtio/virtio-mmio.c
@@ -672,7 +672,30 @@ static int virtio_mmio_set_guest_notifier(DeviceState *d, int n, bool assign,
return 0;
}
+static int virtio_mmio_set_config_guest_notifier(DeviceState *d, bool assign,
+ bool with_irqfd)
+{
+ VirtIOMMIOProxy *proxy = VIRTIO_MMIO(d);
+ VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
+ VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
+ EventNotifier *notifier = virtio_config_get_guest_notifier(vdev);
+ int r = 0;
+ if (assign) {
+ r = event_notifier_init(notifier, 0);
+ if (r < 0) {
+ return r;
+ }
+ virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irqfd);
+ } else {
+ virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irqfd);
+ event_notifier_cleanup(notifier);
+ }
+ if (vdc->guest_notifier_mask && vdev->use_guest_notifier_mask) {
+ vdc->guest_notifier_mask(vdev, VIRTIO_CONFIG_IRQ_IDX, !assign);
+ }
+ return r;
+}
static int virtio_mmio_set_guest_notifiers(DeviceState *d, int nvqs,
bool assign)
{
@@ -694,6 +717,10 @@ static int virtio_mmio_set_guest_notifiers(DeviceState *d, int nvqs,
goto assign_error;
}
}
+ r = virtio_mmio_set_config_guest_notifier(d, assign, with_irqfd);
+ if (r < 0) {
+ goto assign_error;
+ }
return 0;
--
2.34.3
reply other threads:[~2022-07-20 13:12 UTC|newest]
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