search for: vdpa_get_dma_dev

...notify = virtio_vdpa_notify_with_data; + else + notify = virtio_vdpa_notify; + /* Queue shouldn't already be set up. */ if (ops->get_vq_ready(vdpa, index)) return ERR_PTR(-ENOENT); @@ -183,8 +200,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, dma_dev = vdpa_get_dma_dev(vdpa); vq = vring_create_virtqueue_dma(index, max_num, align, vdev, true, may_reduce_num, ctx, - virtio_vdpa_notify, callback, - name, dma_dev); + notify, callback, name, dma_dev); if (!vq) { err = -ENOMEM; goto error_new_virtqueue; diff --git a/include/linux/vdpa.h b/in...

...r legacy guests > */ > struct vdpa_device { > struct device dev; > struct device *dma_dev; > const struct vdpa_config_ops *config; > unsigned int index; > + bool features_valid; > }; > > /** > @@ -266,4 +268,36 @@ static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev) > { > return vdev->dma_dev; > } > + > +static inline void vdpa_reset(struct vdpa_device *vdev) > +{ > + const struct vdpa_config_ops *ops = vdev->config; > + > + vdev->features_valid = false; > + ops->set_statu...

...r legacy guests > */ > struct vdpa_device { > struct device dev; > struct device *dma_dev; > const struct vdpa_config_ops *config; > unsigned int index; > + bool features_valid; > }; > > /** > @@ -266,4 +268,36 @@ static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev) > { > return vdev->dma_dev; > } > + > +static inline void vdpa_reset(struct vdpa_device *vdev) > +{ > + const struct vdpa_config_ops *ops = vdev->config; > + > + vdev->features_valid = false; > + ops->set_statu...

...device index + * @features_valid: were features initialized? for legacy guests */ struct vdpa_device { struct device dev; struct device *dma_dev; const struct vdpa_config_ops *config; unsigned int index; + bool features_valid; }; /** @@ -266,4 +268,36 @@ static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev) { return vdev->dma_dev; } + +static inline void vdpa_reset(struct vdpa_device *vdev) +{ + const struct vdpa_config_ops *ops = vdev->config; + + vdev->features_valid = false; + ops->set_status(vdev, 0); +} + +static inline int vdpa_set_features...

...device index + * @features_valid: were features initialized? for legacy guests */ struct vdpa_device { struct device dev; struct device *dma_dev; const struct vdpa_config_ops *config; unsigned int index; + bool features_valid; }; /** @@ -266,4 +268,36 @@ static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev) { return vdev->dma_dev; } + +static inline void vdpa_reset(struct vdpa_device *vdev) +{ + const struct vdpa_config_ops *ops = vdev->config; + + vdev->features_valid = false; + ops->set_status(vdev, 0); +} + +static inline int vdpa_set_features...

...a.c index dc12dbd5b43b..08c7cb3399fc 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -1140,7 +1140,7 @@ static int vhost_vdpa_alloc_domain(struct vhost_vdpa *v) struct vdpa_device *vdpa = v->vdpa; const struct vdpa_config_ops *ops = vdpa->config; struct device *dma_dev = vdpa_get_dma_dev(vdpa); - struct bus_type *bus; + const struct bus_type *bus; int ret; /* Device want to do DMA by itself */ -- 2.39.2

...struct vdpa_device { > > struct device dev; > > struct device *dma_dev; > > const struct vdpa_config_ops *config; > > unsigned int index; > > + bool features_valid; > > }; > > /** > > @@ -266,4 +268,36 @@ static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev) > > { > > return vdev->dma_dev; > > } > > + > > +static inline void vdpa_reset(struct vdpa_device *vdev) > > +{ > > + const struct vdpa_config_ops *ops = vdev->config; > > + > > + vdev->features_v...

...> + else > + notify = virtio_vdpa_notify; > + > /* Queue shouldn't already be set up. */ > if (ops->get_vq_ready(vdpa, index)) > return ERR_PTR(-ENOENT); > @@ -183,8 +200,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, > dma_dev = vdpa_get_dma_dev(vdpa); > vq = vring_create_virtqueue_dma(index, max_num, align, vdev, > true, may_reduce_num, ctx, > - virtio_vdpa_notify, callback, > - name, dma_dev); > + notify, callback, name, dma_dev); > if (!vq) { > err = -ENOMEM; > goto error_new_virtqueue...

...dpa_notify; > + > /* Queue shouldn't already be set up. */ > if (ops->get_vq_ready(vdpa, index)) > return ERR_PTR(-ENOENT); > @@ -183,8 +200,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, > dma_dev = vdpa_get_dma_dev(vdpa); > vq = vring_create_virtqueue_dma(index, max_num, align, vdev, > true, may_reduce_num, ctx, > - virtio_vdpa_notify, callback, > - name, dma_dev); > +...

...ith_data; + else + __virtio_clear_bit(vdev, VIRTIO_F_NOTIFICATION_DATA); + } + /* Queue shouldn't already be set up. */ if (ops->get_vq_ready(vdpa, index)) return ERR_PTR(-ENOENT); @@ -183,8 +203,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, dma_dev = vdpa_get_dma_dev(vdpa); vq = vring_create_virtqueue_dma(index, max_num, align, vdev, true, may_reduce_num, ctx, - virtio_vdpa_notify, callback, - name, dma_dev); + notify, callback, name, dma_dev); if (!vq) { err = -ENOMEM; goto error_new_virtqueue; diff --git a/include/linux/vdpa.h b/in...

...ev); +} + +static int virtio_vdpa_probe(struct vdpa_device *vdpa) +{ + const struct vdpa_config_ops *ops = vdpa->config; + struct virtio_vdpa_device *vd_dev; + int ret = -EINVAL; + + vd_dev = kzalloc(sizeof(*vd_dev), GFP_KERNEL); + if (!vd_dev) + return -ENOMEM; + + vd_dev->vdev.dev.parent = vdpa_get_dma_dev(vdpa); + vd_dev->vdev.dev.release = virtio_vdpa_release_dev; + vd_dev->vdev.config = &virtio_vdpa_config_ops; + vd_dev->vdpa = vdpa; + INIT_LIST_HEAD(&vd_dev->virtqueues); + spin_lock_init(&vd_dev->lock); + + vd_dev->vdev.id.device = ops->get_device_id(vdpa); + if (...

...ev); +} + +static int virtio_vdpa_probe(struct vdpa_device *vdpa) +{ + const struct vdpa_config_ops *ops = vdpa->config; + struct virtio_vdpa_device *vd_dev; + int ret = -EINVAL; + + vd_dev = kzalloc(sizeof(*vd_dev), GFP_KERNEL); + if (!vd_dev) + return -ENOMEM; + + vd_dev->vdev.dev.parent = vdpa_get_dma_dev(vdpa); + vd_dev->vdev.dev.release = virtio_vdpa_release_dev; + vd_dev->vdev.config = &virtio_vdpa_config_ops; + vd_dev->vdpa = vdpa; + INIT_LIST_HEAD(&vd_dev->virtqueues); + spin_lock_init(&vd_dev->lock); + + vd_dev->vdev.id.device = ops->get_device_id(vdpa); + if (...

..._device, dev); +} + +static inline void *vdpa_get_drvdata(const struct vdpa_device *vdev) +{ + return dev_get_drvdata(&vdev->dev); +} + +static inline void vdpa_set_drvdata(struct vdpa_device *vdev, void *data) +{ + dev_set_drvdata(&vdev->dev, data); +} + +static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev) +{ + return vdev->dma_dev; +} +#endif /* _LINUX_VDPA_H */ -- 2.19.1

..._device, dev); +} + +static inline void *vdpa_get_drvdata(const struct vdpa_device *vdev) +{ + return dev_get_drvdata(&vdev->dev); +} + +static inline void vdpa_set_drvdata(struct vdpa_device *vdev, void *data) +{ + dev_set_drvdata(&vdev->dev, data); +} + +static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev) +{ + return vdev->dma_dev; +} +#endif /* _LINUX_VDPA_H */ -- 2.19.1

Config space endian-ness is currently a mess: fields are not tagged with the correct endian-ness so it's easy to make mistakes like instanciating config space in native endian-ness. The following patches adding sparse tagging are currently in my tree. Lightly tested. As a follow-up, I plan to add new APIs that handle modern config space in a more efficient way (bypassing the version check).

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

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