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authorYevgeny Petrilin <yevgenyp@mellanox.co.il>2008-04-23 11:55:45 -0700
committerRoland Dreier <rolandd@cisco.com>2008-04-23 11:55:45 -0700
commit6296883ca4cd52dafb45f191d24102e28ded38f2 (patch)
tree341e90a9560d8cf6b498d249a6ac81aeea97dd7b /include/linux/mlx4
parent14fb05b3497351fbeb514381bcd227d84e115bd9 (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.h29
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);