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>

1 files changed, 5 insertions, 28 deletions

diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 9e637323c155..5cf994794d25 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -43,24 +43,6 @@
 #include <linux/mlx4/device.h>
 #include <linux/mlx4/doorbell.h>
 
-enum {
-        MLX4_IB_DB_PER_PAGE     = PAGE_SIZE / 4
-};
-
-struct mlx4_ib_db_pgdir;
-struct mlx4_ib_user_db_page;
-
-struct mlx4_ib_db {
-        __be32                 *db;
-        union {
-                struct mlx4_ib_db_pgdir        *pgdir;
-                struct mlx4_ib_user_db_page    *user_page;
-        }                       u;
-        dma_addr_t              dma;
-        int                     index;
-        int                     order;
-};
-
 struct mlx4_ib_ucontext {
         struct ib_ucontext      ibucontext;
         struct mlx4_uar         uar;
@@ -88,7 +70,7 @@ struct mlx4_ib_cq {
         struct mlx4_cq          mcq;
         struct mlx4_ib_cq_buf   buf;
         struct mlx4_ib_cq_resize *resize_buf;
-        struct mlx4_ib_db       db;
+        struct mlx4_db          db;
         spinlock_t              lock;
         struct mutex            resize_mutex;
         struct ib_umem         *umem;
@@ -127,7 +109,7 @@ struct mlx4_ib_qp {
         struct mlx4_qp          mqp;
         struct mlx4_buf         buf;
 
-        struct mlx4_ib_db       db;
+        struct mlx4_db          db;
         struct mlx4_ib_wq       rq;
 
         u32                     doorbell_qpn;
@@ -154,7 +136,7 @@ struct mlx4_ib_srq {
         struct ib_srq           ibsrq;
         struct mlx4_srq         msrq;
         struct mlx4_buf         buf;
-        struct mlx4_ib_db       db;
+        struct mlx4_db          db;
         u64                    *wrid;
         spinlock_t              lock;
         int                     head;
@@ -175,9 +157,6 @@ struct mlx4_ib_dev {
         struct mlx4_dev        *dev;
         void __iomem           *uar_map;
 
-        struct list_head        pgdir_list;
-        struct mutex            pgdir_mutex;
-
         struct mlx4_uar         priv_uar;
         u32                     priv_pdn;
         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
@@ -248,11 +227,9 @@ static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
         return container_of(ibah, struct mlx4_ib_ah, ibah);
 }
 
-int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order);
-void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db);
 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
-                        struct mlx4_ib_db *db);
-void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db);
+                        struct mlx4_db *db);
+void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
 
 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,