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213 lines
5.7 KiB
213 lines
5.7 KiB
/* |
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* Copyright (c) 2007 Mellanox Technologies. All rights reserved. |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the |
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* OpenIB.org BSD license below: |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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* |
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*/ |
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#include <linux/mlx4/cq.h> |
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#include <linux/mlx4/qp.h> |
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#include <linux/mlx4/cmd.h> |
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#include "mlx4_en.h" |
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static void mlx4_en_cq_event(struct mlx4_cq *cq, enum mlx4_event event) |
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{ |
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return; |
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} |
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int mlx4_en_create_cq(struct mlx4_en_priv *priv, |
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struct mlx4_en_cq **pcq, |
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int entries, int ring, enum cq_type mode, |
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int node) |
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{ |
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struct mlx4_en_dev *mdev = priv->mdev; |
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struct mlx4_en_cq *cq; |
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int err; |
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cq = kzalloc_node(sizeof(*cq), GFP_KERNEL, node); |
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if (!cq) { |
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en_err(priv, "Failed to allocate CQ structure\n"); |
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return -ENOMEM; |
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} |
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cq->size = entries; |
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cq->buf_size = cq->size * mdev->dev->caps.cqe_size; |
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cq->ring = ring; |
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cq->type = mode; |
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cq->vector = mdev->dev->caps.num_comp_vectors; |
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/* Allocate HW buffers on provided NUMA node. |
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* dev->numa_node is used in mtt range allocation flow. |
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*/ |
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set_dev_node(&mdev->dev->persist->pdev->dev, node); |
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err = mlx4_alloc_hwq_res(mdev->dev, &cq->wqres, |
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cq->buf_size); |
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set_dev_node(&mdev->dev->persist->pdev->dev, mdev->dev->numa_node); |
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if (err) |
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goto err_cq; |
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cq->buf = (struct mlx4_cqe *)cq->wqres.buf.direct.buf; |
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*pcq = cq; |
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return 0; |
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err_cq: |
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kfree(cq); |
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*pcq = NULL; |
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return err; |
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} |
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int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq, |
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int cq_idx) |
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{ |
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struct mlx4_en_dev *mdev = priv->mdev; |
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int irq, err = 0; |
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int timestamp_en = 0; |
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bool assigned_eq = false; |
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cq->dev = mdev->pndev[priv->port]; |
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cq->mcq.set_ci_db = cq->wqres.db.db; |
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cq->mcq.arm_db = cq->wqres.db.db + 1; |
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*cq->mcq.set_ci_db = 0; |
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*cq->mcq.arm_db = 0; |
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memset(cq->buf, 0, cq->buf_size); |
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if (cq->type == RX) { |
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if (!mlx4_is_eq_vector_valid(mdev->dev, priv->port, |
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cq->vector)) { |
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cq->vector = cpumask_first(priv->rx_ring[cq->ring]->affinity_mask); |
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err = mlx4_assign_eq(mdev->dev, priv->port, |
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&cq->vector); |
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if (err) { |
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mlx4_err(mdev, "Failed assigning an EQ to CQ vector %d\n", |
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cq->vector); |
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goto free_eq; |
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} |
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assigned_eq = true; |
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} |
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irq = mlx4_eq_get_irq(mdev->dev, cq->vector); |
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cq->aff_mask = irq_get_effective_affinity_mask(irq); |
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} else { |
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/* For TX we use the same irq per |
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ring we assigned for the RX */ |
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struct mlx4_en_cq *rx_cq; |
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cq_idx = cq_idx % priv->rx_ring_num; |
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rx_cq = priv->rx_cq[cq_idx]; |
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cq->vector = rx_cq->vector; |
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} |
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if (cq->type == RX) |
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cq->size = priv->rx_ring[cq->ring]->actual_size; |
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if ((cq->type != RX && priv->hwtstamp_config.tx_type) || |
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(cq->type == RX && priv->hwtstamp_config.rx_filter)) |
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timestamp_en = 1; |
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cq->mcq.usage = MLX4_RES_USAGE_DRIVER; |
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err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, |
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&mdev->priv_uar, cq->wqres.db.dma, &cq->mcq, |
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cq->vector, 0, timestamp_en, &cq->wqres.buf, false); |
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if (err) |
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goto free_eq; |
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cq->mcq.event = mlx4_en_cq_event; |
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switch (cq->type) { |
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case TX: |
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cq->mcq.comp = mlx4_en_tx_irq; |
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netif_tx_napi_add(cq->dev, &cq->napi, mlx4_en_poll_tx_cq, |
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NAPI_POLL_WEIGHT); |
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napi_enable(&cq->napi); |
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break; |
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case RX: |
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cq->mcq.comp = mlx4_en_rx_irq; |
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netif_napi_add(cq->dev, &cq->napi, mlx4_en_poll_rx_cq, 64); |
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napi_enable(&cq->napi); |
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break; |
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case TX_XDP: |
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/* nothing regarding napi, it's shared with rx ring */ |
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cq->xdp_busy = false; |
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break; |
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} |
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return 0; |
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free_eq: |
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if (assigned_eq) |
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mlx4_release_eq(mdev->dev, cq->vector); |
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cq->vector = mdev->dev->caps.num_comp_vectors; |
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return err; |
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} |
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void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq **pcq) |
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{ |
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struct mlx4_en_dev *mdev = priv->mdev; |
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struct mlx4_en_cq *cq = *pcq; |
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mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size); |
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if (mlx4_is_eq_vector_valid(mdev->dev, priv->port, cq->vector) && |
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cq->type == RX) |
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mlx4_release_eq(priv->mdev->dev, cq->vector); |
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cq->vector = 0; |
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cq->buf_size = 0; |
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cq->buf = NULL; |
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kfree(cq); |
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*pcq = NULL; |
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} |
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void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) |
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{ |
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if (cq->type != TX_XDP) { |
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napi_disable(&cq->napi); |
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netif_napi_del(&cq->napi); |
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} |
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mlx4_cq_free(priv->mdev->dev, &cq->mcq); |
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} |
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/* Set rx cq moderation parameters */ |
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int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) |
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{ |
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return mlx4_cq_modify(priv->mdev->dev, &cq->mcq, |
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cq->moder_cnt, cq->moder_time); |
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} |
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void mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) |
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{ |
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mlx4_cq_arm(&cq->mcq, MLX4_CQ_DB_REQ_NOT, priv->mdev->uar_map, |
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&priv->mdev->uar_lock); |
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} |
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