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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11 * without modification, are permitted provided that the following
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15 * copyright notice, this list of conditions and the following
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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);
56 cq->vector = ring % mdev->dev->caps.num_comp_vectors;
58 cq->buf_size = sizeof(struct mlx4_cqe);
64 spin_lock_init(&cq->lock);
66 err = mlx4_alloc_hwq_res(mdev->dev, &cq->wqres,
67 cq->buf_size, 2 * PAGE_SIZE);
71 err = mlx4_en_map_buffer(&cq->wqres.buf);
73 mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
75 cq->buf = (struct mlx4_cqe *) cq->wqres.buf.direct.buf;
80 int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
82 struct mlx4_en_dev *mdev = priv->mdev;
85 cq->dev = mdev->pndev[priv->port];
86 cq->mcq.set_ci_db = cq->wqres.db.db;
87 cq->mcq.arm_db = cq->wqres.db.db + 1;
88 *cq->mcq.set_ci_db = 0;
90 memset(cq->buf, 0, cq->buf_size);
92 err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, &mdev->priv_uar,
93 cq->wqres.db.dma, &cq->mcq, cq->vector, cq->is_tx);
97 cq->mcq.comp = cq->is_tx ? mlx4_en_tx_irq : mlx4_en_rx_irq;
98 cq->mcq.event = mlx4_en_cq_event;
101 init_timer(&cq->timer);
102 cq->timer.function = mlx4_en_poll_tx_cq;
103 cq->timer.data = (unsigned long) cq;
105 netif_napi_add(cq->dev, &cq->napi, mlx4_en_poll_rx_cq, 64);
106 napi_enable(&cq->napi);
112 void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
114 struct mlx4_en_dev *mdev = priv->mdev;
116 mlx4_en_unmap_buffer(&cq->wqres.buf);
117 mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
122 void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
124 struct mlx4_en_dev *mdev = priv->mdev;
127 del_timer(&cq->timer);
129 napi_disable(&cq->napi);
131 mlx4_cq_free(mdev->dev, &cq->mcq);
134 /* Set rx cq moderation parameters */
135 int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
137 return mlx4_cq_modify(priv->mdev->dev, &cq->mcq,
138 cq->moder_cnt, cq->moder_time);
141 int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
143 mlx4_cq_arm(&cq->mcq, MLX4_CQ_DB_REQ_NOT, priv->mdev->uar_map,
144 &priv->mdev->uar_lock);