lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mlx4_core: Move kernel doorbell management into core

Browse Source 
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>
This commit is contained in:
Yevgeny Petrilin
2008-04-23 11:55:45 -07:00
committed by Roland Dreier
parent 14fb05b349
commit 6296883ca4
10 changed files with 162 additions and 160 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
include/linux/mlx4/device.h
View File

@@ -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);