2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
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23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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36 #include <linux/mlx4/cq.h>
37 #include <linux/mlx4/qp.h>
38 #include <linux/mlx4/cmd.h>
40 static void mlx4_en_cq_event(struct mlx4_cq *cq, enum mlx4_event event)
46 int mlx4_en_create_cq(struct mlx4_en_priv *priv,
47 struct mlx4_en_cq *cq,
48 int entries, int ring, enum cq_type mode)
50 struct mlx4_en_dev *mdev = priv->mdev;
54 cq->tq = taskqueue_create_fast("mlx4_en_que", M_NOWAIT,
55 taskqueue_thread_enqueue, &cq->tq);
57 cq->buf_size = cq->size * sizeof(struct mlx4_cqe);
58 cq->vector = (ring + priv->port) %
59 mdev->dev->caps.num_comp_vectors;
60 TASK_INIT(&cq->cq_task, 0, mlx4_en_rx_que, cq);
61 taskqueue_start_threads(&cq->tq, 1, PI_NET, "%s rx cq",
64 cq->buf_size = sizeof(struct mlx4_cqe);
65 cq->vector = MLX4_LEAST_ATTACHED_VECTOR;
66 TASK_INIT(&cq->cq_task, 0, mlx4_en_tx_que, cq);
67 taskqueue_start_threads(&cq->tq, 1, PI_NET, "%s tx cq",
73 mtx_init(&cq->lock.m, "mlx4 cq", NULL, MTX_DEF);
75 err = mlx4_alloc_hwq_res(mdev->dev, &cq->wqres,
76 cq->buf_size, 2 * PAGE_SIZE);
80 err = mlx4_en_map_buffer(&cq->wqres.buf);
82 mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
84 cq->buf = (struct mlx4_cqe *) cq->wqres.buf.direct.buf;
89 int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
91 struct mlx4_en_dev *mdev = priv->mdev;
94 cq->dev = mdev->pndev[priv->port];
95 cq->mcq.set_ci_db = cq->wqres.db.db;
96 cq->mcq.arm_db = cq->wqres.db.db + 1;
97 *cq->mcq.set_ci_db = 0;
99 memset(cq->buf, 0, cq->buf_size);
102 cq->size = priv->rx_ring[cq->ring].actual_size;
105 err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, &mdev->priv_uar,
106 cq->wqres.db.dma, &cq->mcq, cq->vector, cq->is_tx, 0);
111 cq->mcq.comp = cq->is_tx ? mlx4_en_tx_irq : mlx4_en_rx_irq;
112 cq->mcq.event = mlx4_en_cq_event;
115 init_timer(&cq->timer);
116 cq->timer.function = mlx4_en_poll_tx_cq;
117 cq->timer.data = (unsigned long) cq;
123 void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
125 struct mlx4_en_dev *mdev = priv->mdev;
127 taskqueue_drain(cq->tq, &cq->cq_task);
128 taskqueue_free(cq->tq);
129 mlx4_en_unmap_buffer(&cq->wqres.buf);
130 mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
133 mtx_destroy(&cq->lock.m);
136 void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
138 struct mlx4_en_dev *mdev = priv->mdev;
140 taskqueue_drain(cq->tq, &cq->cq_task);
142 del_timer(&cq->timer);
144 mlx4_cq_free(mdev->dev, &cq->mcq);
147 /* Set rx cq moderation parameters */
148 int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
150 return mlx4_cq_modify(priv->mdev->dev, &cq->mcq,
151 cq->moder_cnt, cq->moder_time);
154 int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
156 mlx4_cq_arm(&cq->mcq, MLX4_CQ_DB_REQ_NOT, priv->mdev->uar_map,
157 &priv->mdev->uar_lock);