2 * Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved.
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33 #include <linux/mlx5/driver.h>
35 #include "mlx5_core.h"
37 u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq)
39 return (u32)wq->fbc.sz_m1 + 1;
42 u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq)
44 return wq->fbc.sz_m1 + 1;
47 u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq)
49 return (u32)wq->fbc.sz_m1 + 1;
52 static u32 mlx5_wq_cyc_get_byte_size(struct mlx5_wq_cyc *wq)
54 return mlx5_wq_cyc_get_size(wq) << wq->fbc.log_stride;
57 static u32 mlx5_wq_qp_get_byte_size(struct mlx5_wq_qp *wq)
59 return mlx5_wq_cyc_get_byte_size(&wq->rq) +
60 mlx5_wq_cyc_get_byte_size(&wq->sq);
63 static u32 mlx5_cqwq_get_byte_size(struct mlx5_cqwq *wq)
65 return mlx5_cqwq_get_size(wq) << wq->fbc.log_stride;
68 static u32 mlx5_wq_ll_get_byte_size(struct mlx5_wq_ll *wq)
70 return mlx5_wq_ll_get_size(wq) << wq->fbc.log_stride;
73 int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
74 void *wqc, struct mlx5_wq_cyc *wq,
75 struct mlx5_wq_ctrl *wq_ctrl)
77 struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
80 mlx5_fill_fbc(MLX5_GET(wq, wqc, log_wq_stride),
81 MLX5_GET(wq, wqc, log_wq_sz),
83 wq->sz = wq->fbc.sz_m1 + 1;
85 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
87 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
91 err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_cyc_get_byte_size(wq),
92 &wq_ctrl->buf, param->buf_numa_node);
94 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
98 fbc->frag_buf = wq_ctrl->buf;
99 wq->db = wq_ctrl->db.db;
101 wq_ctrl->mdev = mdev;
106 mlx5_db_free(mdev, &wq_ctrl->db);
111 static void mlx5_qp_set_frag_buf(struct mlx5_frag_buf *buf,
112 struct mlx5_wq_qp *qp)
114 struct mlx5_frag_buf_ctrl *sq_fbc;
115 struct mlx5_frag_buf *rqb, *sqb;
117 rqb = &qp->rq.fbc.frag_buf;
119 rqb->size = mlx5_wq_cyc_get_byte_size(&qp->rq);
120 rqb->npages = DIV_ROUND_UP(rqb->size, PAGE_SIZE);
122 sq_fbc = &qp->sq.fbc;
123 sqb = &sq_fbc->frag_buf;
125 sqb->size = mlx5_wq_cyc_get_byte_size(&qp->sq);
126 sqb->npages = DIV_ROUND_UP(sqb->size, PAGE_SIZE);
127 sqb->frags += rqb->npages; /* first part is for the rq */
128 if (sq_fbc->strides_offset)
132 int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
133 void *qpc, struct mlx5_wq_qp *wq,
134 struct mlx5_wq_ctrl *wq_ctrl)
136 u16 sq_strides_offset;
140 mlx5_fill_fbc(MLX5_GET(qpc, qpc, log_rq_stride) + 4,
141 MLX5_GET(qpc, qpc, log_rq_size),
144 rq_pg_remainder = mlx5_wq_cyc_get_byte_size(&wq->rq) % PAGE_SIZE;
145 sq_strides_offset = rq_pg_remainder / MLX5_SEND_WQE_BB;
147 mlx5_fill_fbc_offset(ilog2(MLX5_SEND_WQE_BB),
148 MLX5_GET(qpc, qpc, log_sq_size),
152 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
154 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
158 err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_qp_get_byte_size(wq),
159 &wq_ctrl->buf, param->buf_numa_node);
161 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
165 mlx5_qp_set_frag_buf(&wq_ctrl->buf, wq);
167 wq->rq.db = &wq_ctrl->db.db[MLX5_RCV_DBR];
168 wq->sq.db = &wq_ctrl->db.db[MLX5_SND_DBR];
170 wq_ctrl->mdev = mdev;
175 mlx5_db_free(mdev, &wq_ctrl->db);
180 int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
181 void *cqc, struct mlx5_cqwq *wq,
182 struct mlx5_wq_ctrl *wq_ctrl)
186 mlx5_core_init_cq_frag_buf(&wq->fbc, cqc);
188 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
190 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
194 err = mlx5_frag_buf_alloc_node(mdev, mlx5_cqwq_get_byte_size(wq),
196 param->buf_numa_node);
198 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n",
203 wq->fbc.frag_buf = wq_ctrl->buf;
204 wq->db = wq_ctrl->db.db;
206 wq_ctrl->mdev = mdev;
211 mlx5_db_free(mdev, &wq_ctrl->db);
216 int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
217 void *wqc, struct mlx5_wq_ll *wq,
218 struct mlx5_wq_ctrl *wq_ctrl)
220 struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
221 struct mlx5_wqe_srq_next_seg *next_seg;
225 mlx5_fill_fbc(MLX5_GET(wq, wqc, log_wq_stride),
226 MLX5_GET(wq, wqc, log_wq_sz),
229 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
231 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
235 err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq),
236 &wq_ctrl->buf, param->buf_numa_node);
238 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
242 wq->fbc.frag_buf = wq_ctrl->buf;
243 wq->db = wq_ctrl->db.db;
245 for (i = 0; i < fbc->sz_m1; i++) {
246 next_seg = mlx5_wq_ll_get_wqe(wq, i);
247 next_seg->next_wqe_index = cpu_to_be16(i + 1);
249 next_seg = mlx5_wq_ll_get_wqe(wq, i);
250 wq->tail_next = &next_seg->next_wqe_index;
252 wq_ctrl->mdev = mdev;
257 mlx5_db_free(mdev, &wq_ctrl->db);
262 void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
264 mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
265 mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);