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 wq_get_byte_sz(u8 log_sz, u8 log_stride)
54 return ((u32)1 << log_sz) << log_stride;
57 int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
58 void *wqc, struct mlx5_wq_cyc *wq,
59 struct mlx5_wq_ctrl *wq_ctrl)
61 u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
62 u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz);
63 struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
66 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
68 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
72 wq->db = wq_ctrl->db.db;
74 err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
75 &wq_ctrl->buf, param->buf_numa_node);
77 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
81 mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);
82 wq->sz = mlx5_wq_cyc_get_size(wq);
89 mlx5_db_free(mdev, &wq_ctrl->db);
94 int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
95 void *qpc, struct mlx5_wq_qp *wq,
96 struct mlx5_wq_ctrl *wq_ctrl)
98 u8 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride) + 4;
99 u8 log_rq_sz = MLX5_GET(qpc, qpc, log_rq_size);
100 u8 log_sq_stride = ilog2(MLX5_SEND_WQE_BB);
101 u8 log_sq_sz = MLX5_GET(qpc, qpc, log_sq_size);
108 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
110 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
114 err = mlx5_frag_buf_alloc_node(mdev,
115 wq_get_byte_sz(log_rq_sz, log_rq_stride) +
116 wq_get_byte_sz(log_sq_sz, log_sq_stride),
117 &wq_ctrl->buf, param->buf_numa_node);
119 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
123 mlx5_init_fbc(wq_ctrl->buf.frags, log_rq_stride, log_rq_sz, &wq->rq.fbc);
125 rq_byte_size = wq_get_byte_sz(log_rq_sz, log_rq_stride);
127 if (rq_byte_size < PAGE_SIZE) {
128 /* SQ starts within the same page of the RQ */
129 u16 sq_strides_offset = rq_byte_size / MLX5_SEND_WQE_BB;
131 mlx5_init_fbc_offset(wq_ctrl->buf.frags,
132 log_sq_stride, log_sq_sz, sq_strides_offset,
135 u16 rq_npages = rq_byte_size >> PAGE_SHIFT;
137 mlx5_init_fbc(wq_ctrl->buf.frags + rq_npages,
138 log_sq_stride, log_sq_sz, &wq->sq.fbc);
141 wq->rq.db = &wq_ctrl->db.db[MLX5_RCV_DBR];
142 wq->sq.db = &wq_ctrl->db.db[MLX5_SND_DBR];
144 wq_ctrl->mdev = mdev;
149 mlx5_db_free(mdev, &wq_ctrl->db);
154 int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
155 void *cqc, struct mlx5_cqwq *wq,
156 struct mlx5_wq_ctrl *wq_ctrl)
158 /* CQE_STRIDE_128 and CQE_STRIDE_128_PAD both mean 128B stride */
159 u8 log_wq_stride = MLX5_GET(cqc, cqc, cqe_sz) == CQE_STRIDE_64 ? 6 : 7;
160 u8 log_wq_sz = MLX5_GET(cqc, cqc, log_cq_size);
163 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
165 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
169 wq->db = wq_ctrl->db.db;
171 err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
173 param->buf_numa_node);
175 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n",
180 mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, &wq->fbc);
182 wq_ctrl->mdev = mdev;
187 mlx5_db_free(mdev, &wq_ctrl->db);
192 int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
193 void *wqc, struct mlx5_wq_ll *wq,
194 struct mlx5_wq_ctrl *wq_ctrl)
196 u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
197 u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz);
198 struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
199 struct mlx5_wqe_srq_next_seg *next_seg;
203 err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
205 mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
209 wq->db = wq_ctrl->db.db;
211 err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
212 &wq_ctrl->buf, param->buf_numa_node);
214 mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
218 mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);
220 for (i = 0; i < fbc->sz_m1; i++) {
221 next_seg = mlx5_wq_ll_get_wqe(wq, i);
222 next_seg->next_wqe_index = cpu_to_be16(i + 1);
224 next_seg = mlx5_wq_ll_get_wqe(wq, i);
225 wq->tail_next = &next_seg->next_wqe_index;
227 wq_ctrl->mdev = mdev;
232 mlx5_db_free(mdev, &wq_ctrl->db);
237 void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
239 mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
240 mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);