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
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);
70 static void mlx4_remove_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
72 struct mlx4_device_context *dev_ctx;
74 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
75 if (dev_ctx->intf == intf) {
76 spin_lock_irq(&priv->ctx_lock);
77 list_del(&dev_ctx->list);
78 spin_unlock_irq(&priv->ctx_lock);
80 intf->remove(&priv->dev, dev_ctx->context);
86 int mlx4_register_interface(struct mlx4_interface *intf)
88 struct mlx4_priv *priv;
90 if (!intf->add || !intf->remove)
93 mutex_lock(&intf_mutex);
95 list_add_tail(&intf->list, &intf_list);
96 list_for_each_entry(priv, &dev_list, dev_list) {
97 if (mlx4_is_mfunc(&priv->dev) && (intf->flags & MLX4_INTFF_BONDING)) {
99 "SRIOV, disabling HA mode for intf proto %d\n", intf->protocol);
100 intf->flags &= ~MLX4_INTFF_BONDING;
102 mlx4_add_device(intf, priv);
105 mutex_unlock(&intf_mutex);
109 EXPORT_SYMBOL_GPL(mlx4_register_interface);
111 void mlx4_unregister_interface(struct mlx4_interface *intf)
113 struct mlx4_priv *priv;
115 mutex_lock(&intf_mutex);
117 list_for_each_entry(priv, &dev_list, dev_list)
118 mlx4_remove_device(intf, priv);
120 list_del(&intf->list);
122 mutex_unlock(&intf_mutex);
124 EXPORT_SYMBOL_GPL(mlx4_unregister_interface);
126 int mlx4_do_bond(struct mlx4_dev *dev, bool enable)
128 struct mlx4_priv *priv = mlx4_priv(dev);
129 struct mlx4_device_context *dev_ctx = NULL, *temp_dev_ctx;
132 LIST_HEAD(bond_list);
134 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
137 ret = mlx4_disable_rx_port_check(dev, enable);
139 mlx4_err(dev, "Fail to %s rx port check\n",
140 enable ? "enable" : "disable");
144 dev->flags |= MLX4_FLAG_BONDED;
146 ret = mlx4_virt2phy_port_map(dev, 1, 2);
148 mlx4_err(dev, "Fail to reset port map\n");
151 dev->flags &= ~MLX4_FLAG_BONDED;
154 spin_lock_irqsave(&priv->ctx_lock, flags);
155 list_for_each_entry_safe(dev_ctx, temp_dev_ctx, &priv->ctx_list, list) {
156 if (dev_ctx->intf->flags & MLX4_INTFF_BONDING) {
157 list_add_tail(&dev_ctx->bond_list, &bond_list);
158 list_del(&dev_ctx->list);
161 spin_unlock_irqrestore(&priv->ctx_lock, flags);
163 list_for_each_entry(dev_ctx, &bond_list, bond_list) {
164 dev_ctx->intf->remove(dev, dev_ctx->context);
165 dev_ctx->context = dev_ctx->intf->add(dev);
167 spin_lock_irqsave(&priv->ctx_lock, flags);
168 list_add_tail(&dev_ctx->list, &priv->ctx_list);
169 spin_unlock_irqrestore(&priv->ctx_lock, flags);
171 mlx4_dbg(dev, "Inrerface for protocol %d restarted with when bonded mode is %s\n",
172 dev_ctx->intf->protocol, enable ?
173 "enabled" : "disabled");
178 void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_dev_event type,
181 struct mlx4_priv *priv = mlx4_priv(dev);
182 struct mlx4_device_context *dev_ctx;
185 spin_lock_irqsave(&priv->ctx_lock, flags);
187 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
188 if (dev_ctx->intf->event)
189 dev_ctx->intf->event(dev, dev_ctx->context, type, param);
191 spin_unlock_irqrestore(&priv->ctx_lock, flags);
194 int mlx4_register_device(struct mlx4_dev *dev)
196 struct mlx4_priv *priv = mlx4_priv(dev);
197 struct mlx4_interface *intf;
199 mutex_lock(&intf_mutex);
201 dev->persist->interface_state |= MLX4_INTERFACE_STATE_UP;
202 list_add_tail(&priv->dev_list, &dev_list);
203 list_for_each_entry(intf, &intf_list, list)
204 mlx4_add_device(intf, priv);
206 mutex_unlock(&intf_mutex);
207 mlx4_start_catas_poll(dev);
212 void mlx4_unregister_device(struct mlx4_dev *dev)
214 struct mlx4_priv *priv = mlx4_priv(dev);
215 struct mlx4_interface *intf;
217 mlx4_stop_catas_poll(dev);
218 mutex_lock(&intf_mutex);
220 list_for_each_entry(intf, &intf_list, list)
221 mlx4_remove_device(intf, priv);
223 list_del(&priv->dev_list);
224 dev->persist->interface_state &= ~MLX4_INTERFACE_STATE_UP;
226 mutex_unlock(&intf_mutex);
229 void *mlx4_get_protocol_dev(struct mlx4_dev *dev, enum mlx4_protocol proto, int port)
231 struct mlx4_priv *priv = mlx4_priv(dev);
232 struct mlx4_device_context *dev_ctx;
236 spin_lock_irqsave(&priv->ctx_lock, flags);
238 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
239 if (dev_ctx->intf->protocol == proto && dev_ctx->intf->get_dev) {
240 result = dev_ctx->intf->get_dev(dev, dev_ctx->context, port);
244 spin_unlock_irqrestore(&priv->ctx_lock, flags);
248 EXPORT_SYMBOL_GPL(mlx4_get_protocol_dev);