diff options
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/pci/mlx5/cmd.c | 48 | ||||
| -rw-r--r-- | drivers/vfio/pci/mlx5/cmd.h | 1 |
2 files changed, 49 insertions, 0 deletions
diff --git a/drivers/vfio/pci/mlx5/cmd.c b/drivers/vfio/pci/mlx5/cmd.c index efd1d252cdc9..8a39ff19da28 100644 --- a/drivers/vfio/pci/mlx5/cmd.c +++ b/drivers/vfio/pci/mlx5/cmd.c @@ -149,6 +149,12 @@ int mlx5vf_cmd_query_vhca_migration_state(struct mlx5vf_pci_core_device *mvdev, return 0; } +static void set_tracker_change_event(struct mlx5vf_pci_core_device *mvdev) +{ + mvdev->tracker.object_changed = true; + complete(&mvdev->tracker_comp); +} + static void set_tracker_error(struct mlx5vf_pci_core_device *mvdev) { /* Mark the tracker under an error and wake it up if it's running */ @@ -900,6 +906,29 @@ static int mlx5vf_cmd_modify_tracker(struct mlx5_core_dev *mdev, return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); } +static int mlx5vf_cmd_query_tracker(struct mlx5_core_dev *mdev, + struct mlx5_vhca_page_tracker *tracker) +{ + u32 out[MLX5_ST_SZ_DW(query_page_track_obj_out)] = {}; + u32 in[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)] = {}; + void *obj_context; + void *cmd_hdr; + int err; + + cmd_hdr = MLX5_ADDR_OF(modify_page_track_obj_in, in, general_obj_in_cmd_hdr); + MLX5_SET(general_obj_in_cmd_hdr, cmd_hdr, opcode, MLX5_CMD_OP_QUERY_GENERAL_OBJECT); + MLX5_SET(general_obj_in_cmd_hdr, cmd_hdr, obj_type, MLX5_OBJ_TYPE_PAGE_TRACK); + MLX5_SET(general_obj_in_cmd_hdr, cmd_hdr, obj_id, tracker->id); + + err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); + if (err) + return err; + + obj_context = MLX5_ADDR_OF(query_page_track_obj_out, out, obj_context); + tracker->status = MLX5_GET(page_track, obj_context, state); + return 0; +} + static int alloc_cq_frag_buf(struct mlx5_core_dev *mdev, struct mlx5_vhca_cq_buf *buf, int nent, int cqe_size) @@ -957,9 +986,11 @@ static int mlx5vf_event_notifier(struct notifier_block *nb, unsigned long type, mlx5_nb_cof(nb, struct mlx5_vhca_page_tracker, nb); struct mlx5vf_pci_core_device *mvdev = container_of( tracker, struct mlx5vf_pci_core_device, tracker); + struct mlx5_eqe_obj_change *object; struct mlx5_eqe *eqe = data; u8 event_type = (u8)type; u8 queue_type; + u32 obj_id; int qp_num; switch (event_type) { @@ -975,6 +1006,12 @@ static int mlx5vf_event_notifier(struct notifier_block *nb, unsigned long type, break; set_tracker_error(mvdev); break; + case MLX5_EVENT_TYPE_OBJECT_CHANGE: + object = &eqe->data.obj_change; + obj_id = be32_to_cpu(object->obj_id); + if (obj_id == tracker->id) + set_tracker_change_event(mvdev); + break; default: break; } @@ -1634,6 +1671,11 @@ int mlx5vf_tracker_read_and_clear(struct vfio_device *vdev, unsigned long iova, goto end; } + if (tracker->is_err) { + err = -EIO; + goto end; + } + mdev = mvdev->mdev; err = mlx5vf_cmd_modify_tracker(mdev, tracker->id, iova, length, MLX5_PAGE_TRACK_STATE_REPORTING); @@ -1652,6 +1694,12 @@ int mlx5vf_tracker_read_and_clear(struct vfio_device *vdev, unsigned long iova, dirty, &tracker->status); if (poll_err == CQ_EMPTY) { wait_for_completion(&mvdev->tracker_comp); + if (tracker->object_changed) { + tracker->object_changed = false; + err = mlx5vf_cmd_query_tracker(mdev, tracker); + if (err) + goto end; + } continue; } } diff --git a/drivers/vfio/pci/mlx5/cmd.h b/drivers/vfio/pci/mlx5/cmd.h index f2c7227fa683..0d6a2db3d801 100644 --- a/drivers/vfio/pci/mlx5/cmd.h +++ b/drivers/vfio/pci/mlx5/cmd.h @@ -162,6 +162,7 @@ struct mlx5_vhca_page_tracker { u32 id; u32 pdn; u8 is_err:1; + u8 object_changed:1; struct mlx5_uars_page *uar; struct mlx5_vhca_cq cq; struct mlx5_vhca_qp *host_qp; |