2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/slab.h>
35 #include <linux/export.h>
36 #include <linux/errno.h>
40 struct mlx4_device_context {
41 struct list_head list;
42 struct list_head bond_list;
43 struct mlx4_interface *intf;
47 static LIST_HEAD(intf_list);
48 static LIST_HEAD(dev_list);
49 static DEFINE_MUTEX(intf_mutex);
51 static void mlx4_add_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
53 struct mlx4_device_context *dev_ctx;
55 dev_ctx = kmalloc(sizeof *dev_ctx, GFP_KERNEL);
60 dev_ctx->context = intf->add(&priv->dev);
62 if (dev_ctx->context) {
63 spin_lock_irq(&priv->ctx_lock);
64 list_add_tail(&dev_ctx->list, &priv->ctx_list);
65 spin_unlock_irq(&priv->ctx_lock);
67 intf->activate(&priv->dev, dev_ctx->context);
73 static void mlx4_remove_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
75 struct mlx4_device_context *dev_ctx;
77 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
78 if (dev_ctx->intf == intf) {
79 spin_lock_irq(&priv->ctx_lock);
80 list_del(&dev_ctx->list);
81 spin_unlock_irq(&priv->ctx_lock);
83 intf->remove(&priv->dev, dev_ctx->context);
89 int mlx4_register_interface(struct mlx4_interface *intf)
91 struct mlx4_priv *priv;
93 if (!intf->add || !intf->remove)
96 mutex_lock(&intf_mutex);
98 list_add_tail(&intf->list, &intf_list);
99 list_for_each_entry(priv, &dev_list, dev_list) {
100 if (mlx4_is_mfunc(&priv->dev) && (intf->flags & MLX4_INTFF_BONDING)) {
102 "SRIOV, disabling HA mode for intf proto %d\n", intf->protocol);
103 intf->flags &= ~MLX4_INTFF_BONDING;
105 mlx4_add_device(intf, priv);
108 mutex_unlock(&intf_mutex);
112 EXPORT_SYMBOL_GPL(mlx4_register_interface);
114 void mlx4_unregister_interface(struct mlx4_interface *intf)
116 struct mlx4_priv *priv;
118 mutex_lock(&intf_mutex);
120 list_for_each_entry(priv, &dev_list, dev_list)
121 mlx4_remove_device(intf, priv);
123 list_del(&intf->list);
125 mutex_unlock(&intf_mutex);
127 EXPORT_SYMBOL_GPL(mlx4_unregister_interface);
129 int mlx4_do_bond(struct mlx4_dev *dev, bool enable)
131 struct mlx4_priv *priv = mlx4_priv(dev);
132 struct mlx4_device_context *dev_ctx = NULL, *temp_dev_ctx;
135 LIST_HEAD(bond_list);
137 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
140 ret = mlx4_disable_rx_port_check(dev, enable);
142 mlx4_err(dev, "Fail to %s rx port check\n",
143 enable ? "enable" : "disable");
147 dev->flags |= MLX4_FLAG_BONDED;
149 ret = mlx4_virt2phy_port_map(dev, 1, 2);
151 mlx4_err(dev, "Fail to reset port map\n");
154 dev->flags &= ~MLX4_FLAG_BONDED;
157 spin_lock_irqsave(&priv->ctx_lock, flags);
158 list_for_each_entry_safe(dev_ctx, temp_dev_ctx, &priv->ctx_list, list) {
159 if (dev_ctx->intf->flags & MLX4_INTFF_BONDING) {
160 list_add_tail(&dev_ctx->bond_list, &bond_list);
161 list_del(&dev_ctx->list);
164 spin_unlock_irqrestore(&priv->ctx_lock, flags);
166 list_for_each_entry(dev_ctx, &bond_list, bond_list) {
167 dev_ctx->intf->remove(dev, dev_ctx->context);
168 dev_ctx->context = dev_ctx->intf->add(dev);
170 spin_lock_irqsave(&priv->ctx_lock, flags);
171 list_add_tail(&dev_ctx->list, &priv->ctx_list);
172 spin_unlock_irqrestore(&priv->ctx_lock, flags);
174 mlx4_dbg(dev, "Inrerface for protocol %d restarted with when bonded mode is %s\n",
175 dev_ctx->intf->protocol, enable ?
176 "enabled" : "disabled");
181 void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_dev_event type,
184 struct mlx4_priv *priv = mlx4_priv(dev);
185 struct mlx4_device_context *dev_ctx;
188 spin_lock_irqsave(&priv->ctx_lock, flags);
190 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
191 if (dev_ctx->intf->event)
192 dev_ctx->intf->event(dev, dev_ctx->context, type, param);
194 spin_unlock_irqrestore(&priv->ctx_lock, flags);
197 int mlx4_register_device(struct mlx4_dev *dev)
199 struct mlx4_priv *priv = mlx4_priv(dev);
200 struct mlx4_interface *intf;
202 mutex_lock(&intf_mutex);
204 dev->persist->interface_state |= MLX4_INTERFACE_STATE_UP;
205 list_add_tail(&priv->dev_list, &dev_list);
206 list_for_each_entry(intf, &intf_list, list)
207 mlx4_add_device(intf, priv);
209 mutex_unlock(&intf_mutex);
210 mlx4_start_catas_poll(dev);
215 void mlx4_unregister_device(struct mlx4_dev *dev)
217 struct mlx4_priv *priv = mlx4_priv(dev);
218 struct mlx4_interface *intf;
220 mlx4_stop_catas_poll(dev);
221 mutex_lock(&intf_mutex);
223 list_for_each_entry(intf, &intf_list, list)
224 mlx4_remove_device(intf, priv);
226 list_del(&priv->dev_list);
227 dev->persist->interface_state &= ~MLX4_INTERFACE_STATE_UP;
229 mutex_unlock(&intf_mutex);
232 void *mlx4_get_protocol_dev(struct mlx4_dev *dev, enum mlx4_protocol proto, int port)
234 struct mlx4_priv *priv = mlx4_priv(dev);
235 struct mlx4_device_context *dev_ctx;
239 spin_lock_irqsave(&priv->ctx_lock, flags);
241 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
242 if (dev_ctx->intf->protocol == proto && dev_ctx->intf->get_dev) {
243 result = dev_ctx->intf->get_dev(dev, dev_ctx->context, port);
247 spin_unlock_irqrestore(&priv->ctx_lock, flags);
251 EXPORT_SYMBOL_GPL(mlx4_get_protocol_dev);