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| author | Yishai Hadas <yishaih@mellanox.com> | 2019-12-12 13:09:26 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-01-12 19:49:13 -0400 |
| commit | f164be8c03663034416d019c355fbbd2dbd189d7 (patch) | |
| tree | 83b4484ccd9f0286003a7f30b1bde639b57effc2 | |
| parent | aef5570e23dec7b0f7728687c04e7f888766c39e (diff) | |
| download | linux-f164be8c03663034416d019c355fbbd2dbd189d7.tar.bz2 | |
IB/mlx5: Extend caps stage to handle VAR capabilities
Extend caps stage to handle VAR capabilities.
Link: https://lore.kernel.org/r/20191212110928.334995-4-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 40 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 10 |
2 files changed, 48 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 05b557ddd0d8..e6aa836f1b55 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -6335,6 +6335,35 @@ static const struct ib_device_ops mlx5_ib_dev_dm_ops = { .reg_dm_mr = mlx5_ib_reg_dm_mr, }; +static int mlx5_ib_init_var_table(struct mlx5_ib_dev *dev) +{ + struct mlx5_core_dev *mdev = dev->mdev; + struct mlx5_var_table *var_table = &dev->var_table; + u8 log_doorbell_bar_size; + u8 log_doorbell_stride; + u64 bar_size; + + log_doorbell_bar_size = MLX5_CAP_DEV_VDPA_EMULATION(mdev, + log_doorbell_bar_size); + log_doorbell_stride = MLX5_CAP_DEV_VDPA_EMULATION(mdev, + log_doorbell_stride); + var_table->hw_start_addr = dev->mdev->bar_addr + + MLX5_CAP64_DEV_VDPA_EMULATION(mdev, + doorbell_bar_offset); + bar_size = (1ULL << log_doorbell_bar_size) * 4096; + var_table->stride_size = 1ULL << log_doorbell_stride; + var_table->num_var_hw_entries = bar_size / var_table->stride_size; + mutex_init(&var_table->bitmap_lock); + var_table->bitmap = bitmap_zalloc(var_table->num_var_hw_entries, + GFP_KERNEL); + return (var_table->bitmap) ? 0 : -ENOMEM; +} + +static void mlx5_ib_stage_caps_cleanup(struct mlx5_ib_dev *dev) +{ + bitmap_free(dev->var_table.bitmap); +} + static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev) { struct mlx5_core_dev *mdev = dev->mdev; @@ -6422,6 +6451,13 @@ static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev) MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) mutex_init(&dev->lb.mutex); + if (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & + MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q) { + err = mlx5_ib_init_var_table(dev); + if (err) + return err; + } + dev->ib_dev.use_cq_dim = true; return 0; @@ -6772,7 +6808,7 @@ static const struct mlx5_ib_profile pf_profile = { mlx5_ib_stage_flow_db_cleanup), STAGE_CREATE(MLX5_IB_STAGE_CAPS, mlx5_ib_stage_caps_init, - NULL), + mlx5_ib_stage_caps_cleanup), STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, mlx5_ib_stage_non_default_cb, NULL), @@ -6829,7 +6865,7 @@ const struct mlx5_ib_profile raw_eth_profile = { mlx5_ib_stage_flow_db_cleanup), STAGE_CREATE(MLX5_IB_STAGE_CAPS, mlx5_ib_stage_caps_init, - NULL), + mlx5_ib_stage_caps_cleanup), STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, mlx5_ib_stage_raw_eth_non_default_cb, NULL), diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 927948328184..d3ec11fb59a6 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -959,6 +959,15 @@ struct mlx5_devx_event_table { struct xarray event_xa; }; +struct mlx5_var_table { + /* serialize updating the bitmap */ + struct mutex bitmap_lock; + unsigned long *bitmap; + u64 hw_start_addr; + u32 stride_size; + u64 num_var_hw_entries; +}; + struct mlx5_ib_dev { struct ib_device ib_dev; struct mlx5_core_dev *mdev; @@ -1013,6 +1022,7 @@ struct mlx5_ib_dev { struct mlx5_srq_table srq_table; struct mlx5_async_ctx async_ctx; struct mlx5_devx_event_table devx_event_table; + struct mlx5_var_table var_table; struct xarray sig_mrs; }; |