diff options
| author | Eli Cohen <elic@nvidia.com> | 2021-08-23 08:21:22 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-09-05 16:23:08 -0400 |
| commit | 5262912ef3cfc5e518892c3d67fb36412cb813e2 (patch) | |
| tree | c35e0225d13e410681bb0dc95223bcfe9d5bd726 /drivers/vdpa/mlx5/core/mlx5_vdpa.h | |
| parent | e4fc66508c884b87422a98259cdfe135edae130f (diff) | |
| download | lwn-5262912ef3cfc5e518892c3d67fb36412cb813e2.tar.gz lwn-5262912ef3cfc5e518892c3d67fb36412cb813e2.zip | |
vdpa/mlx5: Add support for control VQ and MAC setting
Add support to handle control virtqueue configurations per virtio
specification. The control virtqueue is implemented in software and no
hardware offloading is involved.
Control VQ configuration need task context, therefore all configurations
are handled in a workqueue created for the purpose.
Modifications are made to the memory registration code to allow for
saving a copy of itolb to be used by the control VQ to access the vring.
The max number of data virtqueus supported by the driver has been
updated to 2 since multiqueue is not supported at this stage and we need
to ensure consistency of VQ indices mapping to either data or control
VQ.
Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20210823052123.14909-6-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa/mlx5/core/mlx5_vdpa.h')
| -rw-r--r-- | drivers/vdpa/mlx5/core/mlx5_vdpa.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/vdpa/mlx5/core/mlx5_vdpa.h b/drivers/vdpa/mlx5/core/mlx5_vdpa.h index 41b20855ed31..6c43476a69cb 100644 --- a/drivers/vdpa/mlx5/core/mlx5_vdpa.h +++ b/drivers/vdpa/mlx5/core/mlx5_vdpa.h @@ -5,6 +5,7 @@ #define __MLX5_VDPA_H__ #include <linux/etherdevice.h> +#include <linux/vringh.h> #include <linux/vdpa.h> #include <linux/mlx5/driver.h> @@ -47,6 +48,26 @@ struct mlx5_vdpa_resources { bool valid; }; +struct mlx5_control_vq { + struct vhost_iotlb *iotlb; + /* spinlock to synchronize iommu table */ + spinlock_t iommu_lock; + struct vringh vring; + bool ready; + u64 desc_addr; + u64 device_addr; + u64 driver_addr; + struct vdpa_callback event_cb; + struct vringh_kiov riov; + struct vringh_kiov wiov; + unsigned short head; +}; + +struct mlx5_ctrl_wq_ent { + struct work_struct work; + struct mlx5_vdpa_dev *mvdev; +}; + struct mlx5_vdpa_dev { struct vdpa_device vdev; struct mlx5_core_dev *mdev; @@ -60,6 +81,8 @@ struct mlx5_vdpa_dev { u32 generation; struct mlx5_vdpa_mr mr; + struct mlx5_control_vq cvq; + struct workqueue_struct *wq; }; int mlx5_vdpa_alloc_pd(struct mlx5_vdpa_dev *dev, u32 *pdn, u16 uid); |