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 {
45 struct mlx5_core_dev *mdev;
50 struct mlx5_frag_wq_ctrl {
51 struct mlx5_core_dev *mdev;
52 struct mlx5_frag_buf frag_buf;
64 struct mlx5_frag_buf frag_buf;
68 u32 cc; /* consumer counter */
85 int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
86 void *wqc, struct mlx5_wq_cyc *wq,
87 struct mlx5_wq_ctrl *wq_ctrl);
88 u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq);
90 int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
91 void *cqc, struct mlx5_cqwq *wq,
92 struct mlx5_frag_wq_ctrl *wq_ctrl);
93 u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq);
95 int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
96 void *wqc, struct mlx5_wq_ll *wq,
97 struct mlx5_wq_ctrl *wq_ctrl);
98 u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq);
100 void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl);
101 void mlx5_cqwq_destroy(struct mlx5_frag_wq_ctrl *wq_ctrl);
103 static inline u16 mlx5_wq_cyc_ctr2ix(struct mlx5_wq_cyc *wq, u16 ctr)
105 return ctr & wq->sz_m1;
108 static inline void *mlx5_wq_cyc_get_wqe(struct mlx5_wq_cyc *wq, u16 ix)
110 return wq->buf + (ix << wq->log_stride);
113 static inline int mlx5_wq_cyc_cc_bigger(u16 cc1, u16 cc2)
115 int equal = (cc1 == cc2);
116 int smaller = 0x8000 & (cc1 - cc2);
118 return !equal && !smaller;
121 static inline u32 mlx5_cqwq_get_ci(struct mlx5_cqwq *wq)
123 return wq->cc & wq->sz_m1;
126 static inline void *mlx5_cqwq_get_wqe(struct mlx5_cqwq *wq, u32 ix)
128 unsigned int frag = (ix >> wq->log_frag_strides);
130 return wq->frag_buf.frags[frag].buf +
131 ((wq->frag_sz_m1 & ix) << wq->log_stride);
134 static inline u32 mlx5_cqwq_get_wrap_cnt(struct mlx5_cqwq *wq)
136 return wq->cc >> wq->log_sz;
139 static inline void mlx5_cqwq_pop(struct mlx5_cqwq *wq)
144 static inline void mlx5_cqwq_update_db_record(struct mlx5_cqwq *wq)
146 *wq->db = cpu_to_be32(wq->cc & 0xffffff);
149 static inline int mlx5_wq_ll_is_full(struct mlx5_wq_ll *wq)
151 return wq->cur_sz == wq->sz_m1;
154 static inline int mlx5_wq_ll_is_empty(struct mlx5_wq_ll *wq)
159 static inline void *mlx5_wq_ll_get_wqe(struct mlx5_wq_ll *wq, u16 ix)
161 return wq->buf + (ix << wq->log_stride);
164 static inline void mlx5_wq_ll_push(struct mlx5_wq_ll *wq, u16 head_next)
166 wq->head = head_next;
171 static inline void mlx5_wq_ll_pop(struct mlx5_wq_ll *wq, __be16 ix,
172 __be16 *next_tail_next)
175 wq->tail_next = next_tail_next;
179 static inline void mlx5_wq_ll_update_db_record(struct mlx5_wq_ll *wq)
181 *wq->db = cpu_to_be32(wq->wqe_ctr);
184 #endif /* __MLX5_WQ_H__ */