Yevgeny Petrilin | 27bf91d | 2009-03-18 19:45:11 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2007 Mellanox Technologies. All rights reserved. |
| 3 | * |
| 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 |
| 7 | * COPYING in the main directory of this source tree, or the |
| 8 | * OpenIB.org BSD license below: |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or |
| 11 | * without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistributions of source code must retain the above |
| 15 | * copyright notice, this list of conditions and the following |
| 16 | * disclaimer. |
| 17 | * |
| 18 | * - Redistributions in binary form must reproduce the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer in the documentation and/or other materials |
| 21 | * provided with the distribution. |
| 22 | * |
| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 30 | * SOFTWARE. |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | #include <linux/errno.h> |
| 35 | #include <linux/if_ether.h> |
| 36 | |
| 37 | #include <linux/mlx4/cmd.h> |
| 38 | |
| 39 | #include "mlx4.h" |
| 40 | |
| 41 | static int mlx4_SENSE_PORT(struct mlx4_dev *dev, int port, |
| 42 | enum mlx4_port_type *type) |
| 43 | { |
| 44 | u64 out_param; |
| 45 | int err = 0; |
| 46 | |
| 47 | err = mlx4_cmd_imm(dev, 0, &out_param, port, 0, |
| 48 | MLX4_CMD_SENSE_PORT, MLX4_CMD_TIME_CLASS_B); |
| 49 | if (err) { |
| 50 | mlx4_err(dev, "Sense command failed for port: %d\n", port); |
| 51 | return err; |
| 52 | } |
| 53 | |
| 54 | if (out_param > 2) { |
| 55 | mlx4_err(dev, "Sense returned illegal value: 0x%llx\n", out_param); |
| 56 | return EINVAL; |
| 57 | } |
| 58 | |
| 59 | *type = out_param; |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | void mlx4_do_sense_ports(struct mlx4_dev *dev, |
| 64 | enum mlx4_port_type *stype, |
| 65 | enum mlx4_port_type *defaults) |
| 66 | { |
| 67 | struct mlx4_sense *sense = &mlx4_priv(dev)->sense; |
| 68 | int err; |
| 69 | int i; |
| 70 | |
| 71 | for (i = 1; i <= dev->caps.num_ports; i++) { |
| 72 | stype[i - 1] = 0; |
| 73 | if (sense->do_sense_port[i] && sense->sense_allowed[i] && |
| 74 | dev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) { |
| 75 | err = mlx4_SENSE_PORT(dev, i, &stype[i - 1]); |
| 76 | if (err) |
| 77 | stype[i - 1] = defaults[i - 1]; |
| 78 | } else |
| 79 | stype[i - 1] = defaults[i - 1]; |
| 80 | } |
| 81 | |
| 82 | /* |
| 83 | * Adjust port configuration: |
| 84 | * If port 1 sensed nothing and port 2 is IB, set both as IB |
| 85 | * If port 2 sensed nothing and port 1 is Eth, set both as Eth |
| 86 | */ |
| 87 | if (stype[0] == MLX4_PORT_TYPE_ETH) { |
| 88 | for (i = 1; i < dev->caps.num_ports; i++) |
| 89 | stype[i] = stype[i] ? stype[i] : MLX4_PORT_TYPE_ETH; |
| 90 | } |
| 91 | if (stype[dev->caps.num_ports - 1] == MLX4_PORT_TYPE_IB) { |
| 92 | for (i = 0; i < dev->caps.num_ports - 1; i++) |
| 93 | stype[i] = stype[i] ? stype[i] : MLX4_PORT_TYPE_IB; |
| 94 | } |
| 95 | |
| 96 | /* |
| 97 | * If sensed nothing, remain in current configuration. |
| 98 | */ |
| 99 | for (i = 0; i < dev->caps.num_ports; i++) |
| 100 | stype[i] = stype[i] ? stype[i] : defaults[i]; |
| 101 | |
| 102 | } |
| 103 | |
| 104 | static void mlx4_sense_port(struct work_struct *work) |
| 105 | { |
Jean Delvare | bf6aede | 2009-04-02 16:56:54 -0700 | [diff] [blame^] | 106 | struct delayed_work *delay = to_delayed_work(work); |
Yevgeny Petrilin | 27bf91d | 2009-03-18 19:45:11 -0700 | [diff] [blame] | 107 | struct mlx4_sense *sense = container_of(delay, struct mlx4_sense, |
| 108 | sense_poll); |
| 109 | struct mlx4_dev *dev = sense->dev; |
| 110 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 111 | enum mlx4_port_type stype[MLX4_MAX_PORTS]; |
| 112 | |
| 113 | mutex_lock(&priv->port_mutex); |
| 114 | mlx4_do_sense_ports(dev, stype, &dev->caps.port_type[1]); |
| 115 | |
| 116 | if (mlx4_check_port_params(dev, stype)) |
| 117 | goto sense_again; |
| 118 | |
| 119 | if (mlx4_change_port_types(dev, stype)) |
| 120 | mlx4_err(dev, "Failed to change port_types\n"); |
| 121 | |
| 122 | sense_again: |
| 123 | mutex_unlock(&priv->port_mutex); |
| 124 | queue_delayed_work(mlx4_wq , &sense->sense_poll, |
| 125 | round_jiffies_relative(MLX4_SENSE_RANGE)); |
| 126 | } |
| 127 | |
| 128 | void mlx4_start_sense(struct mlx4_dev *dev) |
| 129 | { |
| 130 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 131 | struct mlx4_sense *sense = &priv->sense; |
| 132 | |
| 133 | if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) |
| 134 | return; |
| 135 | |
| 136 | queue_delayed_work(mlx4_wq , &sense->sense_poll, |
| 137 | round_jiffies_relative(MLX4_SENSE_RANGE)); |
| 138 | } |
| 139 | |
| 140 | void mlx4_stop_sense(struct mlx4_dev *dev) |
| 141 | { |
| 142 | cancel_delayed_work_sync(&mlx4_priv(dev)->sense.sense_poll); |
| 143 | } |
| 144 | |
| 145 | void mlx4_sense_init(struct mlx4_dev *dev) |
| 146 | { |
| 147 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 148 | struct mlx4_sense *sense = &priv->sense; |
| 149 | int port; |
| 150 | |
| 151 | sense->dev = dev; |
| 152 | for (port = 1; port <= dev->caps.num_ports; port++) |
| 153 | sense->do_sense_port[port] = 1; |
| 154 | |
| 155 | INIT_DELAYED_WORK_DEFERRABLE(&sense->sense_poll, mlx4_sense_port); |
| 156 | } |