2 * Copyright (c) 2013-2017, Mellanox Technologies, Ltd. All rights reserved.
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31 #include <dev/mlx5/mlx5_ifc.h>
33 struct mlx5_wq_param {
40 struct mlx5_core_dev *mdev;
45 struct mlx5_frag_wq_ctrl {
46 struct mlx5_core_dev *mdev;
47 struct mlx5_frag_buf frag_buf;
59 struct mlx5_wq_cyc rq;
60 struct mlx5_wq_cyc sq;
67 u32 cc; /* consumer counter */
83 int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
84 void *wqc, struct mlx5_wq_cyc *wq,
85 struct mlx5_wq_ctrl *wq_ctrl);
86 u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq);
88 int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
89 void *cqc, struct mlx5_cqwq *wq,
90 struct mlx5_wq_ctrl *wq_ctrl);
91 u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq);
93 int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
94 void *wqc, struct mlx5_wq_ll *wq,
95 struct mlx5_wq_ctrl *wq_ctrl);
96 u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq);
98 void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl);
100 static inline u16 mlx5_wq_cyc_ctr2ix(struct mlx5_wq_cyc *wq, u16 ctr)
102 return ctr & wq->sz_m1;
105 static inline void *mlx5_wq_cyc_get_wqe(struct mlx5_wq_cyc *wq, u16 ix)
107 return wq->buf + (ix << wq->log_stride);
110 static inline int mlx5_wq_cyc_cc_bigger(u16 cc1, u16 cc2)
112 int equal = (cc1 == cc2);
113 int smaller = 0x8000 & (cc1 - cc2);
115 return !equal && !smaller;
118 static inline u32 mlx5_cqwq_get_ci(struct mlx5_cqwq *wq)
120 return wq->cc & wq->sz_m1;
123 static inline void *mlx5_cqwq_get_wqe(struct mlx5_cqwq *wq, u32 ix)
125 return wq->buf + (ix << wq->log_stride);
128 static inline u32 mlx5_cqwq_get_wrap_cnt(struct mlx5_cqwq *wq)
130 return wq->cc >> wq->log_sz;
133 static inline void mlx5_cqwq_pop(struct mlx5_cqwq *wq)
138 static inline void mlx5_cqwq_update_db_record(struct mlx5_cqwq *wq)
140 *wq->db = cpu_to_be32(wq->cc & 0xffffff);
143 static inline int mlx5_wq_ll_is_full(struct mlx5_wq_ll *wq)
145 return wq->cur_sz == wq->sz_m1;
148 static inline int mlx5_wq_ll_is_empty(struct mlx5_wq_ll *wq)
153 static inline void mlx5_wq_ll_push(struct mlx5_wq_ll *wq, u16 head_next)
155 wq->head = head_next;
160 static inline void mlx5_wq_ll_pop(struct mlx5_wq_ll *wq, __be16 ix,
161 __be16 *next_tail_next)
164 wq->tail_next = next_tail_next;
167 static inline void mlx5_wq_ll_update_db_record(struct mlx5_wq_ll *wq)
169 *wq->db = cpu_to_be32(wq->wqe_ctr);
172 static inline void *mlx5_wq_ll_get_wqe(struct mlx5_wq_ll *wq, u16 ix)
174 return wq->buf + (ix << wq->log_stride);
177 #endif /* __MLX5_WQ_H__ */