2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008, 2014 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
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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,
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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/module.h>
39 struct mlx4_device_context {
40 struct list_head list;
41 struct list_head bond_list;
42 struct mlx4_interface *intf;
46 static LIST_HEAD(intf_list);
47 static LIST_HEAD(dev_list);
48 static DEFINE_MUTEX(intf_mutex);
50 static void mlx4_add_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
52 struct mlx4_device_context *dev_ctx;
54 dev_ctx = kmalloc(sizeof *dev_ctx, GFP_KERNEL);
59 dev_ctx->context = intf->add(&priv->dev);
61 if (dev_ctx->context) {
62 spin_lock_irq(&priv->ctx_lock);
63 list_add_tail(&dev_ctx->list, &priv->ctx_list);
64 spin_unlock_irq(&priv->ctx_lock);
66 intf->activate(&priv->dev, dev_ctx->context);
71 static void mlx4_remove_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
73 struct mlx4_device_context *dev_ctx;
75 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
76 if (dev_ctx->intf == intf) {
77 spin_lock_irq(&priv->ctx_lock);
78 list_del(&dev_ctx->list);
79 spin_unlock_irq(&priv->ctx_lock);
81 intf->remove(&priv->dev, dev_ctx->context);
87 int mlx4_register_interface(struct mlx4_interface *intf)
89 struct mlx4_priv *priv;
91 if (!intf->add || !intf->remove)
94 mutex_lock(&intf_mutex);
96 list_add_tail(&intf->list, &intf_list);
97 list_for_each_entry(priv, &dev_list, dev_list) {
98 if (mlx4_is_mfunc(&priv->dev) && (intf->flags & MLX4_INTFF_BONDING)) {
100 "SRIOV, disabling HA mode for intf proto %d\n", intf->protocol);
101 intf->flags &= ~MLX4_INTFF_BONDING;
103 mlx4_add_device(intf, priv);
106 mutex_unlock(&intf_mutex);
110 EXPORT_SYMBOL_GPL(mlx4_register_interface);
112 void mlx4_unregister_interface(struct mlx4_interface *intf)
114 struct mlx4_priv *priv;
116 mutex_lock(&intf_mutex);
118 list_for_each_entry(priv, &dev_list, dev_list)
119 mlx4_remove_device(intf, priv);
121 list_del(&intf->list);
123 mutex_unlock(&intf_mutex);
125 EXPORT_SYMBOL_GPL(mlx4_unregister_interface);
127 int mlx4_do_bond(struct mlx4_dev *dev, bool enable)
129 struct mlx4_priv *priv = mlx4_priv(dev);
130 struct mlx4_device_context *dev_ctx = NULL, *temp_dev_ctx;
133 LIST_HEAD(bond_list);
135 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
138 ret = mlx4_disable_rx_port_check(dev, enable);
140 mlx4_err(dev, "Fail to %s rx port check\n",
141 enable ? "enable" : "disable");
145 dev->flags |= MLX4_FLAG_BONDED;
147 ret = mlx4_virt2phy_port_map(dev, 1, 2);
149 mlx4_err(dev, "Fail to reset port map\n");
152 dev->flags &= ~MLX4_FLAG_BONDED;
155 spin_lock_irqsave(&priv->ctx_lock, flags);
156 list_for_each_entry_safe(dev_ctx, temp_dev_ctx, &priv->ctx_list, list) {
157 if (dev_ctx->intf->flags & MLX4_INTFF_BONDING) {
158 list_add_tail(&dev_ctx->bond_list, &bond_list);
159 list_del(&dev_ctx->list);
162 spin_unlock_irqrestore(&priv->ctx_lock, flags);
164 list_for_each_entry(dev_ctx, &bond_list, bond_list) {
165 dev_ctx->intf->remove(dev, dev_ctx->context);
166 dev_ctx->context = dev_ctx->intf->add(dev);
168 spin_lock_irqsave(&priv->ctx_lock, flags);
169 list_add_tail(&dev_ctx->list, &priv->ctx_list);
170 spin_unlock_irqrestore(&priv->ctx_lock, flags);
172 mlx4_dbg(dev, "Inrerface for protocol %d restarted with when bonded mode is %s\n",
173 dev_ctx->intf->protocol, enable ?
174 "enabled" : "disabled");
179 void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_dev_event type,
182 struct mlx4_priv *priv = mlx4_priv(dev);
183 struct mlx4_device_context *dev_ctx;
186 spin_lock_irqsave(&priv->ctx_lock, flags);
188 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
189 if (dev_ctx->intf->event)
190 dev_ctx->intf->event(dev, dev_ctx->context, type, param);
192 spin_unlock_irqrestore(&priv->ctx_lock, flags);
195 int mlx4_register_device(struct mlx4_dev *dev)
197 struct mlx4_priv *priv = mlx4_priv(dev);
198 struct mlx4_interface *intf;
200 mutex_lock(&intf_mutex);
202 dev->persist->interface_state |= MLX4_INTERFACE_STATE_UP;
203 list_add_tail(&priv->dev_list, &dev_list);
204 list_for_each_entry(intf, &intf_list, list)
205 mlx4_add_device(intf, priv);
207 mutex_unlock(&intf_mutex);
208 mlx4_start_catas_poll(dev);
213 void mlx4_unregister_device(struct mlx4_dev *dev)
215 struct mlx4_priv *priv = mlx4_priv(dev);
216 struct mlx4_interface *intf;
218 if (!(dev->persist->interface_state & MLX4_INTERFACE_STATE_UP))
221 mlx4_stop_catas_poll(dev);
222 mutex_lock(&intf_mutex);
224 list_for_each_entry(intf, &intf_list, list)
225 mlx4_remove_device(intf, priv);
227 list_del(&priv->dev_list);
228 dev->persist->interface_state &= ~MLX4_INTERFACE_STATE_UP;
230 mutex_unlock(&intf_mutex);
233 void *mlx4_get_protocol_dev(struct mlx4_dev *dev, enum mlx4_protocol proto, int port)
235 struct mlx4_priv *priv = mlx4_priv(dev);
236 struct mlx4_device_context *dev_ctx;
240 spin_lock_irqsave(&priv->ctx_lock, flags);
242 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
243 if (dev_ctx->intf->protocol == proto && dev_ctx->intf->get_dev) {
244 result = dev_ctx->intf->get_dev(dev, dev_ctx->context, port);
248 spin_unlock_irqrestore(&priv->ctx_lock, flags);
252 EXPORT_SYMBOL_GPL(mlx4_get_protocol_dev);