diff mbox series

[v1,04/10] virtio-pci: implement queue_enabled method

Message ID 20200622153756.19189-5-lulu@redhat.com (mailing list archive)
State New, archived
Headers show
Series vDPA support in qemu | expand

Commit Message

Cindy Lu June 22, 2020, 3:37 p.m. UTC 
From: Jason Wang <jasowang@redhat.com>

With version 1, we can detect whether a queue is enabled via
queue_enabled.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Cindy Lu <lulu@redhat.com>
---
 hw/virtio/virtio-pci.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

Comments

Jason Wang June 23, 2020, 7:13 a.m. UTC | #1 
On 2020/6/22 下午11:37, Cindy Lu wrote:
> From: Jason Wang <jasowang@redhat.com>
>
> With version 1, we can detect whether a queue is enabled via
> queue_enabled.
>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Cindy Lu <lulu@redhat.com>
> ---
>   hw/virtio/virtio-pci.c | 18 ++++++++++++++++++
>   1 file changed, 18 insertions(+)
>
> diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> index 4cb784389c..3918aa9f6c 100644
> --- a/hw/virtio/virtio-pci.c
> +++ b/hw/virtio/virtio-pci.c
> @@ -1107,6 +1107,23 @@ static AddressSpace *virtio_pci_get_dma_as(DeviceState *d)
>       return pci_get_address_space(dev);
>   }
>   
> +static bool  virtio_queue_check_enabled(VirtIODevice *vdev, int n)


One space is sufficient between bool and virtio_queue_check_enabled.


> +{
> +    return  virtio_queue_get_desc_addr(vdev, n) != 0;
> +}
> +
> +static bool virtio_pci_queue_enabled(DeviceState *d, int n)
> +{
> +    VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
> +    VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
> +
> +    if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
> +        return proxy->vqs[vdev->queue_sel].enabled;
> +    }
> +
> +    return  virtio_queue_check_enabled(vdev, n);


Similar issue here.

Thanks


> +}
> +
>   static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
>                                      struct virtio_pci_cap *cap)
>   {
> @@ -2059,6 +2076,7 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
>       k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled;
>       k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
>       k->get_dma_as = virtio_pci_get_dma_as;
> +    k->queue_enabled = virtio_pci_queue_enabled;
>   }
>   
>   static const TypeInfo virtio_pci_bus_info = {
Cindy Lu June 23, 2020, 9:18 a.m. UTC | #2 
On Tue, Jun 23, 2020 at 3:13 PM Jason Wang <jasowang@redhat.com> wrote:
>
>
> On 2020/6/22 下午11:37, Cindy Lu wrote:
> > From: Jason Wang <jasowang@redhat.com>
> >
> > With version 1, we can detect whether a queue is enabled via
> > queue_enabled.
> >
> > Signed-off-by: Jason Wang <jasowang@redhat.com>
> > Signed-off-by: Cindy Lu <lulu@redhat.com>
> > ---
> >   hw/virtio/virtio-pci.c | 18 ++++++++++++++++++
> >   1 file changed, 18 insertions(+)
> >
> > diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> > index 4cb784389c..3918aa9f6c 100644
> > --- a/hw/virtio/virtio-pci.c
> > +++ b/hw/virtio/virtio-pci.c
> > @@ -1107,6 +1107,23 @@ static AddressSpace *virtio_pci_get_dma_as(DeviceState *d)
> >       return pci_get_address_space(dev);
> >   }
> >
> > +static bool  virtio_queue_check_enabled(VirtIODevice *vdev, int n)
>
>
> One space is sufficient between bool and virtio_queue_check_enabled.
>
>
> > +{
> > +    return  virtio_queue_get_desc_addr(vdev, n) != 0;
> > +}
> > +
> > +static bool virtio_pci_queue_enabled(DeviceState *d, int n)
> > +{
> > +    VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
> > +    VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
> > +
> > +    if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
> > +        return proxy->vqs[vdev->queue_sel].enabled;
> > +    }
> > +
> > +    return  virtio_queue_check_enabled(vdev, n);
>
>
> Similar issue here.
>
> Thanks
>
Thanks, I will correct this
>
> > +}
> > +
> >   static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
> >                                      struct virtio_pci_cap *cap)
> >   {
> > @@ -2059,6 +2076,7 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
> >       k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled;
> >       k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
> >       k->get_dma_as = virtio_pci_get_dma_as;
> > +    k->queue_enabled = virtio_pci_queue_enabled;
> >   }
> >
> >   static const TypeInfo virtio_pci_bus_info = {
>
Laurent Vivier June 24, 2020, 1:24 p.m. UTC | #3 
On 22/06/2020 17:37, Cindy Lu wrote:
> From: Jason Wang <jasowang@redhat.com>
> 
> With version 1, we can detect whether a queue is enabled via
> queue_enabled.
> 
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Cindy Lu <lulu@redhat.com>
> ---
>  hw/virtio/virtio-pci.c | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> index 4cb784389c..3918aa9f6c 100644
> --- a/hw/virtio/virtio-pci.c
> +++ b/hw/virtio/virtio-pci.c
> @@ -1107,6 +1107,23 @@ static AddressSpace *virtio_pci_get_dma_as(DeviceState *d)
>      return pci_get_address_space(dev);
>  }
>  
> +static bool  virtio_queue_check_enabled(VirtIODevice *vdev, int n)
> +{
> +    return  virtio_queue_get_desc_addr(vdev, n) != 0;
> +}

This function is already defined under a different name in
hw/virtio/virtio.c:


   3287 bool virtio_queue_enabled(VirtIODevice *vdev, int n)
   3288 {
   3289     return virtio_queue_get_desc_addr(vdev, n) != 0;
   3290 }

As this file includes "hw/virtio/virtio.h" you can use it directly.

Thanks,
Laurent
Cindy Lu June 29, 2020, 7:02 a.m. UTC | #4 
On Wed, Jun 24, 2020 at 9:25 PM Laurent Vivier <lvivier@redhat.com> wrote:
>
> On 22/06/2020 17:37, Cindy Lu wrote:
> > From: Jason Wang <jasowang@redhat.com>
> >
> > With version 1, we can detect whether a queue is enabled via
> > queue_enabled.
> >
> > Signed-off-by: Jason Wang <jasowang@redhat.com>
> > Signed-off-by: Cindy Lu <lulu@redhat.com>
> > ---
> >  hw/virtio/virtio-pci.c | 18 ++++++++++++++++++
> >  1 file changed, 18 insertions(+)
> >
> > diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> > index 4cb784389c..3918aa9f6c 100644
> > --- a/hw/virtio/virtio-pci.c
> > +++ b/hw/virtio/virtio-pci.c
> > @@ -1107,6 +1107,23 @@ static AddressSpace *virtio_pci_get_dma_as(DeviceState *d)
> >      return pci_get_address_space(dev);
> >  }
> >
> > +static bool  virtio_queue_check_enabled(VirtIODevice *vdev, int n)
> > +{
> > +    return  virtio_queue_get_desc_addr(vdev, n) != 0;
> > +}
>
> This function is already defined under a different name in
> hw/virtio/virtio.c:
>
>
>    3287 bool virtio_queue_enabled(VirtIODevice *vdev, int n)
>    3288 {
>    3289     return virtio_queue_get_desc_addr(vdev, n) != 0;
>    3290 }
>
> As this file includes "hw/virtio/virtio.h" you can use it directly.
>
Thanks Laurent, Will fix this
> Thanks,
> Laurent
>
diff mbox series

Patch

diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 4cb784389c..3918aa9f6c 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1107,6 +1107,23 @@  static AddressSpace *virtio_pci_get_dma_as(DeviceState *d)
     return pci_get_address_space(dev);
 }
 
+static bool  virtio_queue_check_enabled(VirtIODevice *vdev, int n)
+{
+    return  virtio_queue_get_desc_addr(vdev, n) != 0;
+}
+
+static bool virtio_pci_queue_enabled(DeviceState *d, int n)
+{
+    VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
+    VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
+
+    if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
+        return proxy->vqs[vdev->queue_sel].enabled;
+    }
+
+    return  virtio_queue_check_enabled(vdev, n);
+}
+
 static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
                                    struct virtio_pci_cap *cap)
 {
@@ -2059,6 +2076,7 @@  static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
     k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled;
     k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
     k->get_dma_as = virtio_pci_get_dma_as;
+    k->queue_enabled = virtio_pci_queue_enabled;
 }
 
 static const TypeInfo virtio_pci_bus_info = {