similar to: [RFC 2/2] vhost: IFC VF vdpa layer

----- Original Message ----- > This commit introduced IFC operations for vdpa, which complys to > virtio_mdev and vhost_mdev interfaces, handles IFC VF > initialization, configuration and removal. > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- > drivers/vhost/ifcvf/ifcvf_main.c | 605 > +++++++++++++++++++++++++++++++++++++++ > 1 file changed,

On 2019/10/21 ??5:53, Zhu, Lingshan wrote: > > On 10/16/2019 6:19 PM, Jason Wang wrote: >> >> On 2019/10/16 ??9:30, Zhu Lingshan wrote: >>> This commit introduced IFC VF operations for vdpa, which complys to >>> vhost_mdev interfaces, handles IFC VF initialization, >>> configuration and removal. >>> >>> Signed-off-by: Zhu Lingshan

On 2019/10/16 ??9:30, Zhu Lingshan wrote: > This commit introduced ifcvf_base layer, which handles IFC VF NIC > hardware operations and configurations. It's better to describe the difference between ifc vf and virtio in the commit log or is there a open doc for this? > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- >

On Tue, Nov 05, 2019 at 05:37:39PM +0800, Zhu Lingshan wrote: > This commit introduced ifcvf_base layer, which handles hardware > operations and configurations. > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- > drivers/vhost/ifcvf/ifcvf_base.c | 344 +++++++++++++++++++++++++++++++++++++++ > drivers/vhost/ifcvf/ifcvf_base.h | 132 +++++++++++++++ >

On Tue, Nov 05, 2019 at 05:37:39PM +0800, Zhu Lingshan wrote: > This commit introduced ifcvf_base layer, which handles hardware > operations and configurations. > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- > drivers/vhost/ifcvf/ifcvf_base.c | 344 +++++++++++++++++++++++++++++++++++++++ > drivers/vhost/ifcvf/ifcvf_base.h | 132 +++++++++++++++ >

On 2019/11/5 ??5:37, Zhu Lingshan wrote: > This commit introduced ifcvf_base layer, which handles hardware > operations and configurations. It looks like the PCI layout is pretty similar to virtio. Can we reuse e.g virtio_pci_modern_probe() (or helpers in virtio_pci_modern.c) to do the probing? > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- >

On Tue, Nov 05, 2019 at 05:37:39PM +0800, Zhu Lingshan wrote: > This commit introduced ifcvf_base layer, which handles hardware > operations and configurations. > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- > drivers/vhost/ifcvf/ifcvf_base.c | 344 +++++++++++++++++++++++++++++++++++++++ > drivers/vhost/ifcvf/ifcvf_base.h | 132 +++++++++++++++ >

On 2019/10/21 ??6:00, Zhu, Lingshan wrote: > > On 10/16/2019 4:40 PM, Jason Wang wrote: >> >> On 2019/10/16 ??9:30, Zhu Lingshan wrote: >>> This commit introduced ifcvf_base layer, which handles IFC VF NIC >>> hardware operations and configurations. >> >> >> It's better to describe the difference between ifc vf and virtio in >> the

On 2019/10/22 ??2:53, Zhu Lingshan wrote: > > On 10/21/2019 6:19 PM, Jason Wang wrote: >> >> On 2019/10/21 ??5:53, Zhu, Lingshan wrote: >>> >>> On 10/16/2019 6:19 PM, Jason Wang wrote: >>>> >>>> On 2019/10/16 ??9:30, Zhu Lingshan wrote: >>>>> This commit introduced IFC VF operations for vdpa, which complys to

On 2019/10/23 ??2:19, Zhu, Lingshan wrote: > > On 10/22/2019 9:05 PM, Jason Wang wrote: >> >> On 2019/10/22 ??2:53, Zhu Lingshan wrote: >>> >>> On 10/21/2019 6:19 PM, Jason Wang wrote: >>>> >>>> On 2019/10/21 ??5:53, Zhu, Lingshan wrote: >>>>> >>>>> On 10/16/2019 6:19 PM, Jason Wang wrote:

This commit synchronize irqs of the virtqueues and config space in the reset routine. Thus ifcvf_stop_hw() and reset() are refactored as well. Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> --- drivers/vdpa/ifcvf/ifcvf_base.c | 41 +++++++++++++++++++++-------- drivers/vdpa/ifcvf/ifcvf_base.h | 1 + drivers/vdpa/ifcvf/ifcvf_main.c | 46 +++++---------------------------- 3 files

On Mon, May 8, 2023 at 6:05?PM Zhu Lingshan <lingshan.zhu at intel.com> wrote: > > This commit synchronize irqs of the virtqueues > and config space in the reset routine. > Thus ifcvf_stop_hw() and reset() are refactored as well. > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- > drivers/vdpa/ifcvf/ifcvf_base.c | 41

Rather than former lazy-initialization mechanism, now the virtqueue operations and driver_features related ops access the virtio registers directly to take immediate actions. So ifcvf_start_datapath() should retire. ifcvf_add_status() is retierd because we should not change device status by a vendor driver's decision, this driver should only set device status which is from virito drivers upon

On 2020/5/11 ??6:11, Zhu, Lingshan wrote: > > > On 5/11/2020 5:26 PM, Jason Wang wrote: >> >> On 2020/5/11 ??3:19, Zhu Lingshan wrote: >>> This commit move IRQ request and free operations from probe() >>> to VIRTIO status change handler to comply with VIRTIO spec. >>> >>> VIRTIO spec 1.1, section 2.1.2 Device Requirements: Device Status

On 2020/5/12 ??4:00, Zhu Lingshan wrote: > This commit move IRQ request and free operations from probe() > to VIRTIO status change handler to comply with VIRTIO spec. > > VIRTIO spec 1.1, section 2.1.2 Device Requirements: Device Status Field > The device MUST NOT consume buffers or send any used buffer > notifications to the driver before DRIVER_OK. This comment needs to be

On 2020/5/11 ??3:19, Zhu Lingshan wrote: > This commit move IRQ request and free operations from probe() > to VIRTIO status change handler to comply with VIRTIO spec. > > VIRTIO spec 1.1, section 2.1.2 Device Requirements: Device Status Field > The device MUST NOT consume buffers or send any used buffer > notifications to the driver before DRIVER_OK. My previous explanation

On 2020/4/24 ??6:04, Zhu Lingshan wrote: > This commit implements config interrupt support > in IFC VF > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- > drivers/vdpa/ifcvf/ifcvf_base.c | 3 +++ > drivers/vdpa/ifcvf/ifcvf_base.h | 2 ++ > drivers/vdpa/ifcvf/ifcvf_main.c | 22 +++++++++++++++++++++- > 3 files changed, 26 insertions(+), 1

On 2020/4/26 ??4:42, Zhu Lingshan wrote: > This commit implements config interrupt support > in IFC VF > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > --- > drivers/vdpa/ifcvf/ifcvf_base.c | 3 +++ > drivers/vdpa/ifcvf/ifcvf_base.h | 3 +++ > drivers/vdpa/ifcvf/ifcvf_main.c | 22 +++++++++++++++++++++- > 3 files changed, 27 insertions(+), 1

On 2019/7/3 ??5:13, Tiwei Bie wrote: > Details about this can be found here: > > https://lwn.net/Articles/750770/ > > What's new in this version > ========================== > > A new VFIO device type is introduced - vfio-vhost. This addressed > some comments from here: https://patchwork.ozlabs.org/cover/984763/ > > Below is the updated device interface: >

This sample driver creates mdev device that simulate virtio net device over virtio mdev transport. The device is implemented through vringh and workqueue. A device specific dma ops is to make sure HVA is used directly as the IOVA. This should be sufficient for kernel virtio driver to work. Only 'virtio' type is supported right now. I plan to add 'vhost' type on top which requires