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_wq_cyc_get_frag_size(struct mlx5_wq_cyc *wq)
44 return (u32)wq->fbc.frag_sz_m1 + 1;
47 u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq)
49 return wq->fbc.sz_m1 + 1;
52 u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq)
54 return (u32)wq->fbc.sz_m1 + 1;
57 static u32 mlx5_wq_cyc_get_byte_size(struct mlx5_wq_cyc *wq)
59 return mlx5_wq_cyc_get_size(wq) << wq->fbc.log_stride;
62 static u32 mlx5_wq_qp_get_byte_size(struct mlx5_wq_qp *wq)
64 return mlx5_wq_cyc_get_byte_size(&wq->rq) +
65 mlx5_wq_cyc_get_byte_size(&wq->sq);
68 static u32 mlx5_cqwq_get_byte_size(struct mlx5_cqwq *wq)
70 return mlx5_cqwq_get_size(wq) << wq->fbc.log_stride;
73 static u32 mlx5_wq_ll_get_byte_size(struct mlx5_wq_ll *wq)
75 return mlx5_wq_ll_get_size(wq) << wq->fbc.log_stride;
78 int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
79 void *wqc, struct mlx5_wq_cyc *wq,
80 struct mlx5_wq_ctrl *wq_ctrl)
82 struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
85 mlx5_fill_fbc(MLX5_GET(wq, wqc, log_wq_stride),
86 MLX5_GET(wq, wqc, log_wq_sz),
88 wq->sz = wq->fbc.sz_m1 + 1;
90 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
92 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
96 err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_cyc_get_byte_size(wq),
97 &wq_ctrl->buf, param->buf_numa_node);
99 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
103 fbc->frag_buf = wq_ctrl->buf;
104 wq->db = wq_ctrl->db.db;
106 wq_ctrl->mdev = mdev;
111 mlx5_db_free(mdev, &wq_ctrl->db);
116 static void mlx5_qp_set_frag_buf(struct mlx5_frag_buf *buf,
117 struct mlx5_wq_qp *qp)
119 struct mlx5_frag_buf_ctrl *sq_fbc;
120 struct mlx5_frag_buf *rqb, *sqb;
122 rqb = &qp->rq.fbc.frag_buf;
124 rqb->size = mlx5_wq_cyc_get_byte_size(&qp->rq);
125 rqb->npages = DIV_ROUND_UP(rqb->size, PAGE_SIZE);
127 sq_fbc = &qp->sq.fbc;
128 sqb = &sq_fbc->frag_buf;
130 sqb->size = mlx5_wq_cyc_get_byte_size(&qp->sq);
131 sqb->npages = DIV_ROUND_UP(sqb->size, PAGE_SIZE);
132 sqb->frags += rqb->npages; /* first part is for the rq */
133 if (sq_fbc->strides_offset)
137 int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
138 void *qpc, struct mlx5_wq_qp *wq,
139 struct mlx5_wq_ctrl *wq_ctrl)
141 u32 sq_strides_offset;
145 mlx5_fill_fbc(MLX5_GET(qpc, qpc, log_rq_stride) + 4,
146 MLX5_GET(qpc, qpc, log_rq_size),
149 rq_pg_remainder = mlx5_wq_cyc_get_byte_size(&wq->rq) % PAGE_SIZE;
150 sq_strides_offset = rq_pg_remainder / MLX5_SEND_WQE_BB;
152 mlx5_fill_fbc_offset(ilog2(MLX5_SEND_WQE_BB),
153 MLX5_GET(qpc, qpc, log_sq_size),
157 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
159 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
163 err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_qp_get_byte_size(wq),
164 &wq_ctrl->buf, param->buf_numa_node);
166 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
170 mlx5_qp_set_frag_buf(&wq_ctrl->buf, wq);
172 wq->rq.db = &wq_ctrl->db.db[MLX5_RCV_DBR];
173 wq->sq.db = &wq_ctrl->db.db[MLX5_SND_DBR];
175 wq_ctrl->mdev = mdev;
180 mlx5_db_free(mdev, &wq_ctrl->db);
185 int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
186 void *cqc, struct mlx5_cqwq *wq,
187 struct mlx5_wq_ctrl *wq_ctrl)
191 mlx5_core_init_cq_frag_buf(&wq->fbc, cqc);
193 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
195 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
199 err = mlx5_frag_buf_alloc_node(mdev, mlx5_cqwq_get_byte_size(wq),
201 param->buf_numa_node);
203 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n",
208 wq->fbc.frag_buf = wq_ctrl->buf;
209 wq->db = wq_ctrl->db.db;
211 wq_ctrl->mdev = mdev;
216 mlx5_db_free(mdev, &wq_ctrl->db);
221 int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
222 void *wqc, struct mlx5_wq_ll *wq,
223 struct mlx5_wq_ctrl *wq_ctrl)
225 struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
226 struct mlx5_wqe_srq_next_seg *next_seg;
230 mlx5_fill_fbc(MLX5_GET(wq, wqc, log_wq_stride),
231 MLX5_GET(wq, wqc, log_wq_sz),
234 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
236 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
240 err = mlx5_frag_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq),
241 &wq_ctrl->buf, param->buf_numa_node);
243 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
247 wq->fbc.frag_buf = wq_ctrl->buf;
248 wq->db = wq_ctrl->db.db;
250 for (i = 0; i < fbc->sz_m1; i++) {
251 next_seg = mlx5_wq_ll_get_wqe(wq, i);
252 next_seg->next_wqe_index = cpu_to_be16(i + 1);
254 next_seg = mlx5_wq_ll_get_wqe(wq, i);
255 wq->tail_next = &next_seg->next_wqe_index;
257 wq_ctrl->mdev = mdev;
262 mlx5_db_free(mdev, &wq_ctrl->db);
267 void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
269 mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
270 mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);