diff options
| author | Yevgeny Petrilin <yevgenyp@mellanox.co.il> | 2008-04-23 11:55:45 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-04-23 11:55:45 -0700 |
| commit | 6296883ca4cd52dafb45f191d24102e28ded38f2 (patch) | |
| tree | 341e90a9560d8cf6b498d249a6ac81aeea97dd7b /include/linux/mlx4 | |
| parent | 14fb05b3497351fbeb514381bcd227d84e115bd9 (diff) | |
mlx4_core: Move kernel doorbell management into core
In addition to mlx4_ib, there will be ethernet and FC consumers of
mlx4_core, so move the code for managing kernel doorbells into the
core module to avoid having to duplicate this multiple times.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'include/linux/mlx4')
| -rw-r--r-- | include/linux/mlx4/device.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index ff7df1a2222f..0a47457931ac 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -208,6 +208,32 @@ struct mlx4_mtt { int page_shift; }; +enum { + MLX4_DB_PER_PAGE = PAGE_SIZE / 4 +}; + +struct mlx4_db_pgdir { + struct list_head list; + DECLARE_BITMAP(order0, MLX4_DB_PER_PAGE); + DECLARE_BITMAP(order1, MLX4_DB_PER_PAGE / 2); + unsigned long *bits[2]; + __be32 *db_page; + dma_addr_t db_dma; +}; + +struct mlx4_ib_user_db_page; + +struct mlx4_db { + __be32 *db; + union { + struct mlx4_db_pgdir *pgdir; + struct mlx4_ib_user_db_page *user_page; + } u; + dma_addr_t dma; + int index; + int order; +}; + struct mlx4_mr { struct mlx4_mtt mtt; u64 iova; @@ -341,6 +367,9 @@ int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, int mlx4_buf_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, struct mlx4_buf *buf); +int mlx4_db_alloc(struct mlx4_dev *dev, struct mlx4_db *db, int order); +void mlx4_db_free(struct mlx4_dev *dev, struct mlx4_db *db); + int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt, struct mlx4_uar *uar, u64 db_rec, struct mlx4_cq *cq); void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq); |