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
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 struct mlx4_device_context {
37 struct list_head list;
38 struct mlx4_interface *intf;
42 static LIST_HEAD(intf_list);
43 static LIST_HEAD(dev_list);
44 static DEFINE_MUTEX(intf_mutex);
46 static void mlx4_add_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
48 struct mlx4_device_context *dev_ctx;
50 dev_ctx = kmalloc(sizeof *dev_ctx, GFP_KERNEL);
55 dev_ctx->context = intf->add(&priv->dev);
57 if (dev_ctx->context) {
58 spin_lock_irq(&priv->ctx_lock);
59 list_add_tail(&dev_ctx->list, &priv->ctx_list);
60 spin_unlock_irq(&priv->ctx_lock);
65 static void mlx4_remove_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
67 struct mlx4_device_context *dev_ctx;
69 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
70 if (dev_ctx->intf == intf) {
71 spin_lock_irq(&priv->ctx_lock);
72 list_del(&dev_ctx->list);
73 spin_unlock_irq(&priv->ctx_lock);
75 intf->remove(&priv->dev, dev_ctx->context);
81 int mlx4_register_interface(struct mlx4_interface *intf)
83 struct mlx4_priv *priv;
85 if (!intf->add || !intf->remove)
88 mutex_lock(&intf_mutex);
90 list_add_tail(&intf->list, &intf_list);
91 list_for_each_entry(priv, &dev_list, dev_list)
92 mlx4_add_device(intf, priv);
94 mutex_unlock(&intf_mutex);
98 EXPORT_SYMBOL_GPL(mlx4_register_interface);
100 void mlx4_unregister_interface(struct mlx4_interface *intf)
102 struct mlx4_priv *priv;
104 mutex_lock(&intf_mutex);
106 list_for_each_entry(priv, &dev_list, dev_list)
107 mlx4_remove_device(intf, priv);
109 list_del(&intf->list);
111 mutex_unlock(&intf_mutex);
113 EXPORT_SYMBOL_GPL(mlx4_unregister_interface);
115 struct mlx4_dev *mlx4_query_interface(void *int_dev, int *port)
117 struct mlx4_priv *priv;
118 struct mlx4_device_context *dev_ctx;
119 enum mlx4_query_reply r;
122 mutex_lock(&intf_mutex);
124 list_for_each_entry(priv, &dev_list, dev_list) {
125 spin_lock_irqsave(&priv->ctx_lock, flags);
126 list_for_each_entry(dev_ctx, &priv->ctx_list, list) {
127 if (!dev_ctx->intf->query)
129 r = dev_ctx->intf->query(dev_ctx->context, int_dev);
130 if (r != MLX4_QUERY_NOT_MINE) {
132 spin_unlock_irqrestore(&priv->ctx_lock, flags);
133 mutex_unlock(&intf_mutex);
137 spin_unlock_irqrestore(&priv->ctx_lock, flags);
140 mutex_unlock(&intf_mutex);
143 EXPORT_SYMBOL_GPL(mlx4_query_interface);
145 void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_dev_event type, int port)
147 struct mlx4_priv *priv = mlx4_priv(dev);
148 struct mlx4_device_context *dev_ctx;
151 spin_lock_irqsave(&priv->ctx_lock, flags);
153 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
154 if (dev_ctx->intf->event)
155 dev_ctx->intf->event(dev, dev_ctx->context, type, port);
157 spin_unlock_irqrestore(&priv->ctx_lock, flags);
160 int mlx4_register_device(struct mlx4_dev *dev)
162 struct mlx4_priv *priv = mlx4_priv(dev);
163 struct mlx4_interface *intf;
165 mutex_lock(&intf_mutex);
167 list_add_tail(&priv->dev_list, &dev_list);
168 list_for_each_entry(intf, &intf_list, list)
169 mlx4_add_device(intf, priv);
171 mutex_unlock(&intf_mutex);
172 mlx4_start_catas_poll(dev);
177 void mlx4_unregister_device(struct mlx4_dev *dev)
179 struct mlx4_priv *priv = mlx4_priv(dev);
180 struct mlx4_interface *intf;
182 mlx4_stop_catas_poll(dev);
183 mutex_lock(&intf_mutex);
185 list_for_each_entry(intf, &intf_list, list)
186 mlx4_remove_device(intf, priv);
188 list_del(&priv->dev_list);
190 mutex_unlock(&intf_mutex);
193 void *mlx4_find_get_prot_dev(struct mlx4_dev *dev, enum mlx4_prot proto, int port)
195 struct mlx4_priv *priv = mlx4_priv(dev);
196 struct mlx4_device_context *dev_ctx;
200 spin_lock_irqsave(&priv->ctx_lock, flags);
202 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
203 if (dev_ctx->intf->protocol == proto && dev_ctx->intf->get_prot_dev) {
204 result = dev_ctx->intf->get_prot_dev(dev, dev_ctx->context, port);
208 spin_unlock_irqrestore(&priv->ctx_lock, flags);