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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8 * OpenIB.org BSD license below:
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15 * copyright notice, this list of conditions and the following
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21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/mlx4/cq.h>
35 #include <linux/mlx4/qp.h>
36 #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;
55 cq->buf_size = cq->size * sizeof(struct mlx4_cqe);
57 cq->buf_size = sizeof(struct mlx4_cqe);
61 spin_lock_init(&cq->lock);
63 err = mlx4_alloc_hwq_res(mdev->dev, &cq->wqres,
64 cq->buf_size, 2 * PAGE_SIZE);
68 err = mlx4_en_map_buffer(&cq->wqres.buf);
70 mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
75 int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
77 struct mlx4_en_dev *mdev = priv->mdev;
80 cq->dev = mdev->pndev[priv->port];
81 cq->mcq.set_ci_db = cq->wqres.db.db;
82 cq->mcq.arm_db = cq->wqres.db.db + 1;
83 *cq->mcq.set_ci_db = 0;
85 cq->buf = (struct mlx4_cqe *) cq->wqres.buf.direct.buf;
86 memset(cq->buf, 0, cq->buf_size);
88 err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, &mdev->priv_uar,
89 cq->wqres.db.dma, &cq->mcq, cq->is_tx);
93 cq->mcq.comp = cq->is_tx ? mlx4_en_tx_irq : mlx4_en_rx_irq;
94 cq->mcq.event = mlx4_en_cq_event;
97 init_timer(&cq->timer);
98 cq->timer.function = mlx4_en_poll_tx_cq;
99 cq->timer.data = (unsigned long) cq;
101 netif_napi_add(cq->dev, &cq->napi, mlx4_en_poll_rx_cq, 64);
102 napi_enable(&cq->napi);
108 void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
110 struct mlx4_en_dev *mdev = priv->mdev;
112 mlx4_en_unmap_buffer(&cq->wqres.buf);
113 mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
118 void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
120 struct mlx4_en_dev *mdev = priv->mdev;
123 del_timer(&cq->timer);
125 napi_disable(&cq->napi);
127 mlx4_cq_free(mdev->dev, &cq->mcq);
130 /* Set rx cq moderation parameters */
131 int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
133 return mlx4_cq_modify(priv->mdev->dev, &cq->mcq,
134 cq->moder_cnt, cq->moder_time);
137 int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
140 mlx4_cq_arm(&cq->mcq, MLX4_CQ_DB_REQ_NOT, priv->mdev->uar_map,
141 &priv->mdev->uar_lock);