/* * Copyright (c) 2007 Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * */ #include <linux/errno.h> #include <linux/if_ether.h> #include <linux/mlx4/cmd.h> #include "mlx4.h" static int mlx4_SENSE_PORT(struct mlx4_dev *dev, int port, enum mlx4_port_type *type) { u64 out_param; int err = 0; err = mlx4_cmd_imm(dev, 0, &out_param, port, 0, MLX4_CMD_SENSE_PORT, MLX4_CMD_TIME_CLASS_B); if (err) { mlx4_err(dev, "Sense command failed for port: %d\n", port); return err; } if (out_param > 2) { mlx4_err(dev, "Sense returned illegal value: 0x%llx\n", out_param); return -EINVAL; } *type = out_param; return 0; } void mlx4_do_sense_ports(struct mlx4_dev *dev, enum mlx4_port_type *stype, enum mlx4_port_type *defaults) { struct mlx4_sense *sense = &mlx4_priv(dev)->sense; int err; int i; for (i = 1; i <= dev->caps.num_ports; i++) { stype[i - 1] = 0; if (sense->do_sense_port[i] && sense->sense_allowed[i] && dev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) { err = mlx4_SENSE_PORT(dev, i, &stype[i - 1]); if (err) stype[i - 1] = defaults[i - 1]; } else stype[i - 1] = defaults[i - 1]; } /* * Adjust port configuration: * If port 1 sensed nothing and port 2 is IB, set both as IB * If port 2 sensed nothing and port 1 is Eth, set both as Eth */ if (stype[0] == MLX4_PORT_TYPE_ETH) { for (i = 1; i < dev->caps.num_ports; i++) stype[i] = stype[i] ? stype[i] : MLX4_PORT_TYPE_ETH; } if (stype[dev->caps.num_ports - 1] == MLX4_PORT_TYPE_IB) { for (i = 0; i < dev->caps.num_ports - 1; i++) stype[i] = stype[i] ? stype[i] : MLX4_PORT_TYPE_IB; } /* * If sensed nothing, remain in current configuration. */ for (i = 0; i < dev->caps.num_ports; i++) stype[i] = stype[i] ? stype[i] : defaults[i]; } static void mlx4_sense_port(struct work_struct *work) { struct delayed_work *delay = to_delayed_work(work); struct mlx4_sense *sense = container_of(delay, struct mlx4_sense, sense_poll); struct mlx4_dev *dev = sense->dev; struct mlx4_priv *priv = mlx4_priv(dev); enum mlx4_port_type stype[MLX4_MAX_PORTS]; mutex_lock(&priv->port_mutex); mlx4_do_sense_ports(dev, stype, &dev->caps.port_type[1]); if (mlx4_check_port_params(dev, stype)) goto sense_again; if (mlx4_change_port_types(dev, stype)) mlx4_err(dev, "Failed to change port_types\n"); sense_again: mutex_unlock(&priv->port_mutex); queue_delayed_work(mlx4_wq , &sense->sense_poll, round_jiffies_relative(MLX4_SENSE_RANGE)); } void mlx4_start_sense(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_sense *sense = &priv->sense; if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) return; queue_delayed_work(mlx4_wq , &sense->sense_poll, round_jiffies_relative(MLX4_SENSE_RANGE)); } void mlx4_stop_sense(struct mlx4_dev *dev) { cancel_delayed_work_sync(&mlx4_priv(dev)->sense.sense_poll); } void mlx4_sense_init(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_sense *sense = &priv->sense; int port; sense->dev = dev; for (port = 1; port <= dev->caps.num_ports; port++) sense->do_sense_port[port] = 1; INIT_DELAYED_WORK_DEFERRABLE(&sense->sense_poll, mlx4_sense_port); }