search for: vdpasim_virtqueue

...ne DRV_VERSION "0.1" +#define DRV_AUTHOR "Jason Wang <jasowang at redhat.com>" +#define DRV_DESC "vDPA Device Simulator" +#define DRV_LICENSE "GPL v2" + +struct vdpasim_dev { + struct device dev; +}; + +struct vdpasim_dev *vdpasim_dev; + +struct vdpasim_virtqueue { + struct vringh vring; + struct vringh_kiov iov; + unsigned short head; + bool ready; + u64 desc_addr; + u64 device_addr; + u64 driver_addr; + u32 num; + void *private; + irqreturn_t (*cb)(void *data); +}; + +#define VDPASIM_QUEUE_ALIGN PAGE_SIZE +#define VDPASIM_QUEUE_MAX 256 +#define VDPASIM_DE...

...<uapi/linux/virtio_config.h> +#include <uapi/linux/virtio_net.h> + +#define DRV_VERSION "0.1" +#define DRV_AUTHOR "Jason Wang <jasowang at redhat.com>" +#define DRV_DESC "vDPA Device Simulator" +#define DRV_LICENSE "GPL v2" + +struct vdpasim_virtqueue { + struct vringh vring; + struct vringh_kiov iov; + unsigned short head; + bool ready; + u64 desc_addr; + u64 device_addr; + u64 driver_addr; + u32 num; + void *private; + irqreturn_t (*cb)(void *data); +}; + +#define VDPASIM_QUEUE_ALIGN PAGE_SIZE +#define VDPASIM_QUEUE_MAX 256 +#define VDPASIM_DE...

...vdpa_sim/vdpa_sim.c index 7957d2d41fc4..01c456f7c1f7 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -89,15 +89,14 @@ static struct vdpasim *dev_to_sim(struct device *dev) static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx) { struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx]; - int ret; - ret = vringh_init_iotlb(&vq->vring, vdpasim_features, - VDPASIM_QUEUE_MAX, false, - (struct vring_desc *)(uintptr_t)vq->desc_addr, - (struct vring_avail *) - (uintptr_t)vq->driver_addr, - (struct vring_used *) - (uintptr...

...vdpa_sim/vdpa_sim.c index 7957d2d41fc4..01c456f7c1f7 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -89,15 +89,14 @@ static struct vdpasim *dev_to_sim(struct device *dev) static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx) { struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx]; - int ret; - ret = vringh_init_iotlb(&vq->vring, vdpasim_features, - VDPASIM_QUEUE_MAX, false, - (struct vring_desc *)(uintptr_t)vq->desc_addr, - (struct vring_avail *) - (uintptr_t)vq->driver_addr, - (struct vring_used *) - (uintptr...

...R "Jason Wang <jasowang at redhat.com>" > +#define DRV_DESC "vDPA Device Simulator" > +#define DRV_LICENSE "GPL v2" > + > +struct vdpasim_dev { > + struct device dev; > +}; > + > +struct vdpasim_dev *vdpasim_dev; > + > +struct vdpasim_virtqueue { > + struct vringh vring; > + struct vringh_kiov iov; > + unsigned short head; > + bool ready; > + u64 desc_addr; > + u64 device_addr; > + u64 driver_addr; > + u32 num; > + void *private; > + irqreturn_t (*cb)(void *data); > +}; > + > +#define VDPASIM_QUEUE_A...

...f --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index 6e8a0cf2fdeb..b3c800653056 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -132,7 +132,8 @@ static void vdpasim_work(struct work_struct *work) vdpasim, work); struct vdpasim_virtqueue *txq = &vdpasim->vqs[1]; struct vdpasim_virtqueue *rxq = &vdpasim->vqs[0]; - size_t read, write, total_write; + ssize_t read, write; + size_t total_write; int err; int pkts = 0; -- 2.25.1

...void vdpasim_handle_cvq(struct vdpasim *vdpasim) u64_stats_update_end(&net->cq_stats.syncp); } -static void vdpasim_net_work(struct work_struct *work) +static void vdpasim_net_work(struct vdpasim *vdpasim) { - struct vdpasim *vdpasim = container_of(work, struct vdpasim, work); struct vdpasim_virtqueue *txq = &vdpasim->vqs[1]; struct vdpasim_virtqueue *rxq = &vdpasim->vqs[0]; struct vdpasim_net *net = sim_to_net(vdpasim); @@ -260,7 +258,7 @@ static void vdpasim_net_work(struct work_struct *work) vdpasim_net_complete(rxq, write); if (tx_pkts > 4) { - schedule_work(&a...

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

...s(+), 2 deletions(-) > > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h > index 4774292fba8c..3a42887d05d9 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h > @@ -59,6 +59,7 @@ struct vdpasim { > struct vdpasim_virtqueue *vqs; > struct kthread_worker *worker; > struct kthread_work work; > + struct mm_struct *mm_bound; > struct vdpasim_dev_attr dev_attr; > /* mutex to synchronize virtqueue state */ > struct mutex mutex; > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdp...

...er)) goto err_iommu; - spin_lock_init(&vdpasim->lock); + mutex_init(&vdpasim->mutex); spin_lock_init(&vdpasim->iommu_lock); dev = &vdpasim->vdpa.dev; @@ -275,13 +275,13 @@ static void vdpasim_set_vq_ready(struct vdpa_device *vdpa, u16 idx, bool ready) struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx]; bool old_ready; - spin_lock(&vdpasim->lock); + mutex_lock(&vdpasim->mutex); old_ready = vq->ready; vq->ready = ready; if (vq->ready && !old_ready) { vdpasim_queue_ready(vdpasim, idx); } - spin_unlock(&vdpasim->loc...

...d2d41fc4..01c456f7c1f7 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c > @@ -89,15 +89,14 @@ static struct vdpasim *dev_to_sim(struct device *dev) > static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx) > { > struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx]; > - int ret; > > - ret = vringh_init_iotlb(&vq->vring, vdpasim_features, > - VDPASIM_QUEUE_MAX, false, > - (struct vring_desc *)(uintptr_t)vq->desc_addr, > - (struct vring_avail *) > - (uintptr_t)vq->driver_addr, >...

...2 deletions(-) > > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h > index 4774292fba8c..3a42887d05d9 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h > @@ -59,6 +59,7 @@ struct vdpasim { > struct vdpasim_virtqueue *vqs; > struct kthread_worker *worker; > struct kthread_work work; > + struct mm_struct *mm_bound; > struct vdpasim_dev_attr dev_attr; > /* mutex to synchronize virtqueue state */ > struct mutex mutex; > diff --git a/drivers/vdpa/vd...

v2: - rebased on Linus' tree, commit ae3419fbac84 ("vc_screen: don't clobber return value in vcs_read") - removed `struct task_struct *owner` param (unused for now, maybe ?useful to support cgroups) [Jason] - add unbind_mm callback [Jason] - call the new unbind_mm callback during the release [Jason] - avoid to call bind_mm callback after the reset, since the device ?is not

.../vdpa_sim/vdpa_sim.c Jason Wang 2020-03-26 89 static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx) a35630af6f3198 drivers/virtio/vdpa/vdpa_sim/vdpa_sim.c Jason Wang 2020-03-26 90 { a35630af6f3198 drivers/virtio/vdpa/vdpa_sim/vdpa_sim.c Jason Wang 2020-03-26 91 struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx]; a35630af6f3198 drivers/virtio/vdpa/vdpa_sim/vdpa_sim.c Jason Wang 2020-03-26 92 int ret; a35630af6f3198 drivers/virtio/vdpa/vdpa_sim/vdpa_sim.c Jason Wang 2020-03-26 93 a35630af6f3198 drivers/virtio/vdpa/vdpa_sim/vdpa_sim.c Jason Wang 2020-03-26 @94 ret =...

This series adds support for the use of user virtual addresses in the vDPA simulator devices. The main reason for this change is to lift the pinning of all guest memory. Especially with virtio devices implemented in software. The next step would be to generalize the code in vdpa-sim to allow the implementation of in-kernel software devices. Similar to vhost, but using vDPA so we can reuse the

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

...2 deletions(-) > > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h > index 4774292fba8c..3a42887d05d9 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h > @@ -59,6 +59,7 @@ struct vdpasim { > struct vdpasim_virtqueue *vqs; > struct kthread_worker *worker; > struct kthread_work work; > + struct mm_struct *mm_bound; > struct vdpasim_dev_attr dev_attr; > /* mutex to synchronize virtqueue state */ > struct mutex mutex; > diff --git a/drivers/vdpa/vd...

Hi All: This series tries to add the support for control virtqueue in vDPA. Control virtqueue is used by networking device for accepting various commands from the driver. It's a must to support multiqueue and other configurations. When used by vhost-vDPA bus driver for VM, the control virtqueue should be shadowed via userspace VMM (Qemu) instead of being assigned directly to Guest. This is

Hi All: This series tries to add the support for control virtqueue in vDPA. Control virtqueue is used by networking device for accepting various commands from the driver. It's a must to support multiqueue and other configurations. When used by vhost-vDPA bus driver for VM, the control virtqueue should be shadowed via userspace VMM (Qemu) instead of being assigned directly to Guest. This is