search for: vd_dev

..._vdpa_notify(struct virtqueue *vq) +{ + struct vdpa_device *vdpa = vd_get_vdpa(vq->vdev); + const struct vdpa_config_ops *ops = vdpa->config; + + ops->kick_vq(vdpa, vq->index); + + return true; +} + +static irqreturn_t virtio_vdpa_config_cb(void *private) +{ + struct virtio_vdpa_device *vd_dev = private; + + virtio_config_changed(&vd_dev->vdev); + + return IRQ_HANDLED; +} + +static irqreturn_t virtio_vdpa_virtqueue_cb(void *private) +{ + struct virtio_vdpa_vq_info *info = private; + + return vring_interrupt(0, info->vq); +} + +static struct virtqueue * +virtio_vdpa_setup_vq(str...

..._vdpa_notify(struct virtqueue *vq) +{ + struct vdpa_device *vdpa = vd_get_vdpa(vq->vdev); + const struct vdpa_config_ops *ops = vdpa->config; + + ops->kick_vq(vdpa, vq->index); + + return true; +} + +static irqreturn_t virtio_vdpa_config_cb(void *private) +{ + struct virtio_vdpa_device *vd_dev = private; + + virtio_config_changed(&vd_dev->vdev); + + return IRQ_HANDLED; +} + +static irqreturn_t virtio_vdpa_virtqueue_cb(void *private) +{ + struct virtio_vdpa_vq_info *info = private; + + return vring_interrupt(0, info->vq); +} + +static struct virtqueue * +virtio_vdpa_setup_vq(str...

Hi all: This is an update version of vDPA support in kernel. vDPA device is a device that uses a datapath which complies with the virtio specifications with vendor specific control path. vDPA devices can be both physically located on the hardware or emulated by software. vDPA hardware devices are usually implemented through PCIE with the following types: - PF (Physical Function) - A single

Hi all: This is an update version of vDPA support in kernel. vDPA device is a device that uses a datapath which complies with the virtio specifications with vendor specific control path. vDPA devices can be both physically located on the hardware or emulated by software. vDPA hardware devices are usually implemented through PCIE with the following types: - PF (Physical Function) - A single

...device it attached > to. Namely get_arch_dma_ops(struct bus type) can not work on > vdpa_device.dev. Then it seems device drivers need to implement a wrap > of dma_ops of parent devices. Can this work be done in the vdpa > framework since it looks like a common task? Can > "vd_dev->vdev.dev.parent = vdpa->dev->parent;" in virtio_vdpa_probe() > do the work? > > Thanks, > BR > Zhu Lingshan Good catch. I think we can. Thanks

...device it attached > to. Namely get_arch_dma_ops(struct bus type) can not work on > vdpa_device.dev. Then it seems device drivers need to implement a wrap > of dma_ops of parent devices. Can this work be done in the vdpa > framework since it looks like a common task? Can > "vd_dev->vdev.dev.parent = vdpa->dev->parent;" in virtio_vdpa_probe() > do the work? > > Thanks, > BR > Zhu Lingshan Good catch. I think we can. Thanks

Hi all: This is an updated version of kernel support for vDPA device. Various changes were made based on the feedback since last verion. One major change is to drop the sysfs API and leave the management interface for future development, and introudce the incremental DMA bus operations. Please see changelog for more information. The work on vhost, IFCVF (intel VF driver for vDPA) and qemu is

...ct vdpa_device *vdpa = vd_get_vdpa(vq->vdev); + const struct vdpa_config_ops *ops = vdpa->config; + u32 data = vring_notification_data(vq); + + ops->kick_vq_with_data(vdpa, data); + + return true; +} + static irqreturn_t virtio_vdpa_config_cb(void *private) { struct virtio_vdpa_device *vd_dev = private; @@ -138,6 +149,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, struct device *dma_dev; const struct vdpa_config_ops *ops = vdpa->config; struct virtio_vdpa_vq_info *info; + bool (*notify)(struct virtqueue *vq); struct vdpa_callback cb; struct virtqu...

...attached to. Namely > > get_arch_dma_ops(struct bus type) can not work on vdpa_device.dev. Then > > it seems device drivers need to implement a wrap of dma_ops of parent > > devices. Can this work be done in the vdpa framework since it looks like > > a common task? Can "vd_dev->vdev.dev.parent = vdpa->dev->parent;" in > > virtio_vdpa_probe() do the work? > > > > Thanks, > > BR > > Zhu Lingshan > > > Good catch. > > I think we can. IMHO you need to specify some 'dma_device', not try and play tricks wi...

.../drivers/virtio/virtio_vdpa.c > index f72696b4c1c2..9eee8afabda8 100644 > --- a/drivers/virtio/virtio_vdpa.c > +++ b/drivers/virtio/virtio_vdpa.c > @@ -282,9 +282,13 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs, > struct virtio_vdpa_device *vd_dev = to_virtio_vdpa_device(vdev); > struct vdpa_device *vdpa = vd_get_vdpa(vdev); > const struct vdpa_config_ops *ops = vdpa->config; > + struct irq_affinity default_affd = { 0 }; > struct vdpa_callback cb; > int i, err, queue_idx = 0; > >...

...const struct vdpa_config_ops *ops = vdpa->config; > + u32 data = vring_notification_data(vq); > + > + ops->kick_vq_with_data(vdpa, data); > + > + return true; > +} > + > static irqreturn_t virtio_vdpa_config_cb(void *private) > { > struct virtio_vdpa_device *vd_dev = private; > @@ -138,6 +149,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, > struct device *dma_dev; > const struct vdpa_config_ops *ops = vdpa->config; > struct virtio_vdpa_vq_info *info; > + bool (*notify)(struct virtqueue *vq); > struct vdp...

...g_ops *ops = vdpa->config; > + u32 data = vring_notification_data(vq); > + > + ops->kick_vq_with_data(vdpa, data); > + > + return true; > +} > + > static irqreturn_t virtio_vdpa_config_cb(void *private) > { > struct virtio_vdpa_device *vd_dev = private; > @@ -138,6 +149,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, > struct device *dma_dev; > const struct vdpa_config_ops *ops = vdpa->config; > struct virtio_vdpa_vq_info *info; > + bool (*notify)(struct virtqueue...

...ct vdpa_device *vdpa = vd_get_vdpa(vq->vdev); + const struct vdpa_config_ops *ops = vdpa->config; + u32 data = vring_notification_data(vq); + + ops->kick_vq_with_data(vdpa, data); + + return true; +} + static irqreturn_t virtio_vdpa_config_cb(void *private) { struct virtio_vdpa_device *vd_dev = private; @@ -138,6 +149,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, struct device *dma_dev; const struct vdpa_config_ops *ops = vdpa->config; struct virtio_vdpa_vq_info *info; + bool (*notify)(struct virtqueue *vq) = virtio_vdpa_notify; struct vdpa_callbac...