[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH v9 06/10] virtio: add support for configure interrupt
From: |
Cindy Lu |
Subject: |
[PATCH v9 06/10] virtio: add support for configure interrupt |
Date: |
Thu, 30 Sep 2021 10:33:44 +0800 |
Add the support for configure interrupt in virtio
add notifier_read and set_fd_handler function
Signed-off-by: Cindy Lu <lulu@redhat.com>
---
hw/virtio/virtio.c | 29 +++++++++++++++++++++++++++++
include/hw/virtio/virtio.h | 4 ++++
2 files changed, 33 insertions(+)
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 31987b103b..bd222edc9e 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -3531,7 +3531,14 @@ static void
virtio_queue_guest_notifier_read(EventNotifier *n)
virtio_irq(vq);
}
}
+static void virtio_config_guest_notifier_read(EventNotifier *n)
+{
+ VirtIODevice *vdev = container_of(n, VirtIODevice, config_notifier);
+ if (event_notifier_test_and_clear(n)) {
+ virtio_notify_config(vdev);
+ }
+}
void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
bool with_irqfd)
{
@@ -3548,6 +3555,23 @@ void
virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
}
}
+void virtio_config_set_guest_notifier_fd_handler(VirtIODevice *vdev,
+ bool assign, bool with_irqfd)
+{
+ EventNotifier *n;
+ n = &vdev->config_notifier;
+ if (assign && !with_irqfd) {
+ event_notifier_set_handler(n, virtio_config_guest_notifier_read);
+ } else {
+ event_notifier_set_handler(n, NULL);
+ }
+ if (!assign) {
+ /* Test and clear notifier before closing it,*/
+ /* in case poll callback didn't have time to run. */
+ virtio_config_guest_notifier_read(n);
+ }
+}
+
EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq)
{
return &vq->guest_notifier;
@@ -3621,6 +3645,11 @@ EventNotifier *virtio_queue_get_host_notifier(VirtQueue
*vq)
return &vq->host_notifier;
}
+EventNotifier *virtio_config_get_guest_notifier(VirtIODevice *vdev)
+{
+ return &vdev->config_notifier;
+}
+
void virtio_queue_set_host_notifier_enabled(VirtQueue *vq, bool enabled)
{
vq->host_notifier_enabled = enabled;
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 2766c293f4..9e02d155a1 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -110,6 +110,7 @@ struct VirtIODevice
bool use_guest_notifier_mask;
AddressSpace *dma_as;
QLIST_HEAD(, VirtQueue) *vector_queues;
+ EventNotifier config_notifier;
};
struct VirtioDeviceClass {
@@ -312,11 +313,14 @@ uint16_t virtio_get_queue_index(VirtQueue *vq);
EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
bool with_irqfd);
+void virtio_config_set_guest_notifier_fd_handler(VirtIODevice *vdev,
+ bool assign, bool with_irqfd);
int virtio_device_start_ioeventfd(VirtIODevice *vdev);
int virtio_device_grab_ioeventfd(VirtIODevice *vdev);
void virtio_device_release_ioeventfd(VirtIODevice *vdev);
bool virtio_device_ioeventfd_enabled(VirtIODevice *vdev);
EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq);
+EventNotifier *virtio_config_get_guest_notifier(VirtIODevice *vdev);
void virtio_queue_set_host_notifier_enabled(VirtQueue *vq, bool enabled);
void virtio_queue_host_notifier_read(EventNotifier *n);
void virtio_queue_aio_set_host_notifier_handler(VirtQueue *vq, AioContext *ctx,
--
2.21.3
- [PATCH v9 00/10] vhost-vdpa: add support for configure interrupt, Cindy Lu, 2021/09/29
- [PATCH v9 01/10] virtio: introduce macro IRTIO_CONFIG_IRQ_IDX, Cindy Lu, 2021/09/29
- [PATCH v9 02/10] virtio-pci: decouple notifier from interrupt process, Cindy Lu, 2021/09/29
- [PATCH v9 03/10] virtio-pci: decouple the single vector from the interrupt process, Cindy Lu, 2021/09/29
- [PATCH v9 04/10] vhost: add new call back function for config interrupt, Cindy Lu, 2021/09/29
- [PATCH v9 05/10] vhost-vdpa: add support for config interrupt call back, Cindy Lu, 2021/09/29
- [PATCH v9 06/10] virtio: add support for configure interrupt,
Cindy Lu <=
- [PATCH v9 07/10] virtio-net: add support for configure interrupt, Cindy Lu, 2021/09/29
- [PATCH v9 08/10] vhost: add support for configure interrupt, Cindy Lu, 2021/09/29
- [PATCH v9 09/10] virtio-mmio: add support for configure interrupt, Cindy Lu, 2021/09/29
- [PATCH v9 10/10] virtio-pci: add support for configure interrupt, Cindy Lu, 2021/09/29