2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
33 #include <linux/errno.h>
34 #include <linux/if_ether.h>
36 #include <linux/mlx4/cmd.h>
40 #define MLX4_MAC_VALID (1ull << 63)
41 #define MLX4_MAC_MASK 0xffffffffffffULL
43 #define MLX4_VLAN_VALID (1u << 31)
44 #define MLX4_VLAN_MASK 0xfff
46 void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
50 mutex_init(&table->mutex);
51 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
52 table->entries[i] = 0;
55 table->max = 1 << dev->caps.log_num_macs;
59 void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
63 mutex_init(&table->mutex);
64 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
65 table->entries[i] = 0;
68 table->max = 1 << dev->caps.log_num_vlans;
72 static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
75 struct mlx4_cmd_mailbox *mailbox;
79 mailbox = mlx4_alloc_cmd_mailbox(dev);
81 return PTR_ERR(mailbox);
83 memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
85 in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
86 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
87 MLX4_CMD_TIME_CLASS_B);
89 mlx4_free_cmd_mailbox(dev, mailbox);
93 int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index)
95 struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
99 mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac);
100 mutex_lock(&table->mutex);
101 for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) {
102 if (free < 0 && !table->refs[i]) {
107 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
108 /* MAC already registered, increase refernce count */
120 mlx4_dbg(dev, "Free MAC index is %d\n", free);
122 if (table->total == table->max) {
123 /* No free mac entries */
128 /* Register new MAC */
129 table->refs[free] = 1;
130 table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
132 err = mlx4_set_port_mac_table(dev, port, table->entries);
134 mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac);
135 table->refs[free] = 0;
136 table->entries[free] = 0;
143 mutex_unlock(&table->mutex);
146 EXPORT_SYMBOL_GPL(mlx4_register_mac);
148 void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index)
150 struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
152 mutex_lock(&table->mutex);
153 if (!table->refs[index]) {
154 mlx4_warn(dev, "No MAC entry for index %d\n", index);
157 if (--table->refs[index]) {
158 mlx4_warn(dev, "Have more references for index %d,"
159 "no need to modify MAC table\n", index);
162 table->entries[index] = 0;
163 mlx4_set_port_mac_table(dev, port, table->entries);
166 mutex_unlock(&table->mutex);
168 EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
170 static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
173 struct mlx4_cmd_mailbox *mailbox;
177 mailbox = mlx4_alloc_cmd_mailbox(dev);
179 return PTR_ERR(mailbox);
181 memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
182 in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
183 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
184 MLX4_CMD_TIME_CLASS_B);
186 mlx4_free_cmd_mailbox(dev, mailbox);
191 int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
193 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
197 mutex_lock(&table->mutex);
198 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
199 if (free < 0 && (table->refs[i] == 0)) {
204 if (table->refs[i] &&
205 (vlan == (MLX4_VLAN_MASK &
206 be32_to_cpu(table->entries[i])))) {
207 /* Vlan already registered, increase refernce count */
219 if (table->total == table->max) {
220 /* No free vlan entries */
225 /* Register new MAC */
226 table->refs[free] = 1;
227 table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
229 err = mlx4_set_port_vlan_table(dev, port, table->entries);
231 mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
232 table->refs[free] = 0;
233 table->entries[free] = 0;
240 mutex_unlock(&table->mutex);
243 EXPORT_SYMBOL_GPL(mlx4_register_vlan);
245 void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
247 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
249 if (index < MLX4_VLAN_REGULAR) {
250 mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
254 mutex_lock(&table->mutex);
255 if (!table->refs[index]) {
256 mlx4_warn(dev, "No vlan entry for index %d\n", index);
259 if (--table->refs[index]) {
260 mlx4_dbg(dev, "Have more references for index %d,"
261 "no need to modify vlan table\n", index);
264 table->entries[index] = 0;
265 mlx4_set_port_vlan_table(dev, port, table->entries);
268 mutex_unlock(&table->mutex);
270 EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
272 int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps)
274 struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
278 inmailbox = mlx4_alloc_cmd_mailbox(dev);
279 if (IS_ERR(inmailbox))
280 return PTR_ERR(inmailbox);
282 outmailbox = mlx4_alloc_cmd_mailbox(dev);
283 if (IS_ERR(outmailbox)) {
284 mlx4_free_cmd_mailbox(dev, inmailbox);
285 return PTR_ERR(outmailbox);
288 inbuf = inmailbox->buf;
289 outbuf = outmailbox->buf;
290 memset(inbuf, 0, 256);
291 memset(outbuf, 0, 256);
296 *(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015);
297 *(__be32 *) (&inbuf[20]) = cpu_to_be32(port);
299 err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
300 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C);
302 *caps = *(__be32 *) (outbuf + 84);
303 mlx4_free_cmd_mailbox(dev, inmailbox);
304 mlx4_free_cmd_mailbox(dev, outmailbox);
308 int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
310 struct mlx4_cmd_mailbox *mailbox;
313 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
316 mailbox = mlx4_alloc_cmd_mailbox(dev);
318 return PTR_ERR(mailbox);
320 memset(mailbox->buf, 0, 256);
322 ((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
323 err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
324 MLX4_CMD_TIME_CLASS_B);
326 mlx4_free_cmd_mailbox(dev, mailbox);