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2021-02-25vdpa: set the virtqueue num during registerJason Wang1-3/+2
This patch delay the queue number setting to vDPA device registering. This allows us to probe the virtqueue numbers between device allocation and registering. Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20210223061905.422659-3-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-02-23vdpa: Extend routine to accept vdpa device nameParav Pandit1-1/+1
In a subsequent patch, when user initiated command creates a vdpa device, the user chooses the name of the vdpa device. To support it, extend the device allocation API to consider this name specified by the caller driver. Signed-off-by: Parav Pandit <parav@nvidia.com> Reviewed-by: Eli Cohen <elic@nvidia.com> Acked-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20210105103203.82508-3-parav@nvidia.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-12-18vdpa: ifcvf: Use dma_set_mask_and_coherent to simplify codeChristophe JAILLET1-9/+2
'pci_set_dma_mask()' + 'pci_set_consistent_dma_mask()' can be replaced by an equivalent 'dma_set_mask_and_coherent()' which is much less verbose. While at it, fix a typo (s/confiugration/configuration) Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/20201129125434.1462638-1-christophe.jaillet@wanadoo.fr Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2020-08-26vdpa: ifcvf: free config irq in ifcvf_free_irq()Jason Wang2-3/+4
We don't free config irq in ifcvf_free_irq() which will trigger a BUG() in pci core since we try to free the vectors that has an action. Fixing this by recording the config irq in ifcvf_hw structure and free it in ifcvf_free_irq(). Fixes: e7991f376a4d ("ifcvf: implement config interrupt in IFCVF") Cc: Zhu Lingshan <lingshan.zhu@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200723091254.20617-2-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Zhu Lingshan <lingshan.zhu@intel.com> Fixes: e7991f376a4d ("ifcvf: implement config interrupt in IFCVF") Cc: Zhu Lingshan <a class="moz-txt-link-rfc2396E" href="mailto:lingshan.zhu@intel.com">&lt;lingshan.zhu@intel.com&gt;</a> Signed-off-by: Jason Wang <a class="moz-txt-link-rfc2396E" href="mailto:jasowang@redhat.com">&lt;jasowang@redhat.com&gt;</a>
2020-08-26vdpa: ifcvf: return err when fail to request config irqJason Wang1-0/+4
We ignore the err of requesting config interrupt, fix this. Fixes: e7991f376a4d ("ifcvf: implement config interrupt in IFCVF") Cc: Zhu Lingshan <lingshan.zhu@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200723091254.20617-1-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Zhu Lingshan <lingshan.zhu@intel.com> Fixes: e7991f376a4d ("ifcvf: implement config interrupt in IFCVF") Cc: Zhu Lingshan <a class="moz-txt-link-rfc2396E" href="mailto:lingshan.zhu@intel.com">&lt;lingshan.zhu@intel.com&gt;</a> Signed-off-by: Jason Wang <a class="moz-txt-link-rfc2396E" href="mailto:jasowang@redhat.com">&lt;jasowang@redhat.com&gt;</a> Tested-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2020-08-05vdpa: Modify get_vq_state() to return error codeEli Cohen1-2/+3
Modify get_vq_state() so it returns an error code. In case of hardware acceleration, the available index may be retrieved from the device, an operation that can possibly fail. Reviewed-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Link: https://lore.kernel.org/r/20200804162048.22587-9-eli@mellanox.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2020-08-05net/vdpa: Use struct for set/get vq stateEli Cohen3-8/+9
For now VQ state involves 16 bit available index value encoded in u64 variable. In the future it will be extended to contain more fields. Use struct to contain the state, now containing only a single u16 for the available index. In the future we can add fields to this struct. Reviewed-by: Parav Pandit <parav@mellanox.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Link: https://lore.kernel.org/r/20200804162048.22587-8-eli@mellanox.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-08-05vdpa: remove hard coded virtq numMax Gurtovoy1-1/+2
This will enable vdpa providers to add support for multi queue feature and publish it to upper layers (vhost and virtio). Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200804162048.22587-7-eli@mellanox.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-08-05ifcvf: implement vdpa_config_ops.get_vq_irq()Zhu Lingshan1-2/+16
This commit implemented vdpa_config_ops.get_vq_irq() in ifcvf, and initialized vq irq to -EINVAL. So that ifcvf can report irq number of a vq, or -EINVAL if the vq is not assigned an irq number. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Suggested-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200731065533.4144-6-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-08-03virtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORMMichael S. Tsirkin1-1/+1
Rename the bit to match latest virtio spec. Add a compat macro to avoid breaking existing userspace. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com>
2020-06-06ifcvf: implement config interrupt in IFCVFZhu Lingshan3-1/+29
This commit implements config interrupt support in IFC VF Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Acked-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/1591352835-22441-6-git-send-email-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-06ifcvf: ignore continuous setting same status valueZhu Lingshan1-0/+3
User space may try to set status of same value multiple times, this patch handles this case more efficiently by ignoring the setting of the same status value. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Link: https://lore.kernel.org/r/1591352835-22441-3-git-send-email-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-04ifcvf: move IRQ request/free to status change handlersZhu Lingshan1-47/+73
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. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Link: https://lore.kernel.org/r/1589270444-3669-1-git-send-email-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2020-04-17vdpa: allow a 32 bit vq alignmentMichael S. Tsirkin1-1/+1
get_vq_align returns u16 now, but that's not enough for systems/devices with 64K pages. All callers assign it to a u32 variable anyway, so let's just change the return value type to u32. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-04-16vdpa: remove unused variables 'ifcvf' and 'ifcvf_lm'YueHaibing2-4/+0
drivers/vdpa/ifcvf/ifcvf_main.c:34:24: warning: variable ‘ifcvf’ set but not used [-Wunused-but-set-variable] drivers/vdpa/ifcvf/ifcvf_base.c:304:31: warning: variable ‘ifcvf_lm’ set but not used [-Wunused-but-set-variable] Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200402024626.32944-1-yuehaibing@huawei.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-04-02vdpa: move to drivers/vdpaMichael S. Tsirkin4-0/+945
We have both vhost and virtio drivers that depend on vdpa. It's easier to locate it at a top level directory otherwise we run into issues e.g. if vhost is built-in but virtio is modular. Let's just move it up a level. Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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