2 * Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved.
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36 #include <linux/mlx5/mlx5_ifc.h>
38 struct mlx5_wq_param {
44 struct mlx5_core_dev *mdev;
60 u32 cc; /* consumer counter */
76 int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
77 void *wqc, struct mlx5_wq_cyc *wq,
78 struct mlx5_wq_ctrl *wq_ctrl);
79 u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq);
81 int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
82 void *cqc, struct mlx5_cqwq *wq,
83 struct mlx5_wq_ctrl *wq_ctrl);
84 u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq);
86 int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
87 void *wqc, struct mlx5_wq_ll *wq,
88 struct mlx5_wq_ctrl *wq_ctrl);
89 u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq);
91 void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl);
93 static inline u16 mlx5_wq_cyc_ctr2ix(struct mlx5_wq_cyc *wq, u16 ctr)
95 return ctr & wq->sz_m1;
98 static inline void *mlx5_wq_cyc_get_wqe(struct mlx5_wq_cyc *wq, u16 ix)
100 return wq->buf + (ix << wq->log_stride);
103 static inline int mlx5_wq_cyc_cc_bigger(u16 cc1, u16 cc2)
105 int equal = (cc1 == cc2);
106 int smaller = 0x8000 & (cc1 - cc2);
108 return !equal && !smaller;
111 static inline u32 mlx5_cqwq_get_ci(struct mlx5_cqwq *wq)
113 return wq->cc & wq->sz_m1;
116 static inline void *mlx5_cqwq_get_wqe(struct mlx5_cqwq *wq, u32 ix)
118 return wq->buf + (ix << wq->log_stride);
121 static inline u32 mlx5_cqwq_get_wrap_cnt(struct mlx5_cqwq *wq)
123 return wq->cc >> wq->log_sz;
126 static inline void mlx5_cqwq_pop(struct mlx5_cqwq *wq)
131 static inline void mlx5_cqwq_update_db_record(struct mlx5_cqwq *wq)
133 *wq->db = cpu_to_be32(wq->cc & 0xffffff);
136 static inline int mlx5_wq_ll_is_full(struct mlx5_wq_ll *wq)
138 return wq->cur_sz == wq->sz_m1;
141 static inline int mlx5_wq_ll_is_empty(struct mlx5_wq_ll *wq)
146 static inline void *mlx5_wq_ll_get_wqe(struct mlx5_wq_ll *wq, u16 ix)
148 return wq->buf + (ix << wq->log_stride);
151 static inline void mlx5_wq_ll_push(struct mlx5_wq_ll *wq, u16 head_next)
153 wq->head = head_next;
158 static inline void mlx5_wq_ll_pop(struct mlx5_wq_ll *wq, __be16 ix,
159 __be16 *next_tail_next)
162 wq->tail_next = next_tail_next;
166 static inline void mlx5_wq_ll_update_db_record(struct mlx5_wq_ll *wq)
168 *wq->db = cpu_to_be32(wq->wqe_ctr);
171 #endif /* __MLX5_WQ_H__ */