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
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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 static int mlx4_uc_steer_add(struct mlx4_dev *dev, u8 port,
94 u64 mac, int *qpn, u8 reserve)
101 err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
103 mlx4_err(dev, "Failed to reserve qp for mac registration\n");
109 mac &= 0xffffffffffffULL;
110 mac = cpu_to_be64(mac << 16);
111 memcpy(&gid[10], &mac, ETH_ALEN);
113 gid[7] = MLX4_UC_STEER << 1;
115 err = mlx4_qp_attach_common(dev, &qp, gid, 0,
116 MLX4_PROT_ETH, MLX4_UC_STEER);
118 mlx4_qp_release_range(dev, *qpn, 1);
123 static void mlx4_uc_steer_release(struct mlx4_dev *dev, u8 port,
124 u64 mac, int qpn, u8 free)
130 mac &= 0xffffffffffffULL;
131 mac = cpu_to_be64(mac << 16);
132 memcpy(&gid[10], &mac, ETH_ALEN);
134 gid[7] = MLX4_UC_STEER << 1;
136 mlx4_qp_detach_common(dev, &qp, gid, MLX4_PROT_ETH, MLX4_UC_STEER);
138 mlx4_qp_release_range(dev, qpn, 1);
141 int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *qpn, u8 wrap)
143 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
144 struct mlx4_mac_table *table = &info->mac_table;
145 struct mlx4_mac_entry *entry;
149 if (dev->caps.vep_uc_steering) {
150 err = mlx4_uc_steer_add(dev, port, mac, qpn, 1);
152 entry = kmalloc(sizeof *entry, GFP_KERNEL);
154 mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
158 err = radix_tree_insert(&info->mac_tree, *qpn, entry);
160 mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
166 mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac);
167 mutex_lock(&table->mutex);
168 for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) {
169 if (free < 0 && !table->refs[i]) {
174 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
175 /* MAC already registered, increase refernce count */
186 mlx4_dbg(dev, "Free MAC index is %d\n", free);
188 if (table->total == table->max) {
189 /* No free mac entries */
194 /* Register new MAC */
195 table->refs[free] = 1;
196 table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
198 err = mlx4_set_port_mac_table(dev, port, table->entries);
200 mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac);
201 table->refs[free] = 0;
202 table->entries[free] = 0;
206 if (!dev->caps.vep_uc_steering)
207 *qpn = info->base_qpn + free;
210 mutex_unlock(&table->mutex);
213 EXPORT_SYMBOL_GPL(mlx4_register_mac);
215 static int validate_index(struct mlx4_dev *dev,
216 struct mlx4_mac_table *table, int index)
220 if (index < 0 || index >= table->max || !table->entries[index]) {
221 mlx4_warn(dev, "No valid Mac entry for the given index\n");
227 static int find_index(struct mlx4_dev *dev,
228 struct mlx4_mac_table *table, u64 mac)
231 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
232 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
239 void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int qpn)
241 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
242 struct mlx4_mac_table *table = &info->mac_table;
243 int index = qpn - info->base_qpn;
244 struct mlx4_mac_entry *entry;
246 if (dev->caps.vep_uc_steering) {
247 entry = radix_tree_lookup(&info->mac_tree, qpn);
249 mlx4_uc_steer_release(dev, port, entry->mac, qpn, 1);
250 radix_tree_delete(&info->mac_tree, qpn);
251 index = find_index(dev, table, entry->mac);
256 mutex_lock(&table->mutex);
258 if (validate_index(dev, table, index))
261 table->entries[index] = 0;
262 mlx4_set_port_mac_table(dev, port, table->entries);
265 mutex_unlock(&table->mutex);
267 EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
269 int mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac, u8 wrap)
271 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
272 struct mlx4_mac_table *table = &info->mac_table;
273 int index = qpn - info->base_qpn;
274 struct mlx4_mac_entry *entry;
277 if (dev->caps.vep_uc_steering) {
278 entry = radix_tree_lookup(&info->mac_tree, qpn);
281 index = find_index(dev, table, entry->mac);
282 mlx4_uc_steer_release(dev, port, entry->mac, qpn, 0);
283 entry->mac = new_mac;
284 err = mlx4_uc_steer_add(dev, port, entry->mac, &qpn, 0);
285 if (err || index < 0)
289 mutex_lock(&table->mutex);
291 err = validate_index(dev, table, index);
295 table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
297 err = mlx4_set_port_mac_table(dev, port, table->entries);
299 mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) new_mac);
300 table->entries[index] = 0;
303 mutex_unlock(&table->mutex);
306 EXPORT_SYMBOL_GPL(mlx4_replace_mac);
307 static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
310 struct mlx4_cmd_mailbox *mailbox;
314 mailbox = mlx4_alloc_cmd_mailbox(dev);
316 return PTR_ERR(mailbox);
318 memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
319 in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
320 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
321 MLX4_CMD_TIME_CLASS_B);
323 mlx4_free_cmd_mailbox(dev, mailbox);
328 int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
330 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
333 for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
334 if (table->refs[i] &&
335 (vid == (MLX4_VLAN_MASK &
336 be32_to_cpu(table->entries[i])))) {
337 /* VLAN already registered, increase reference count */
345 EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
347 int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
349 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
353 mutex_lock(&table->mutex);
354 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
355 if (free < 0 && (table->refs[i] == 0)) {
360 if (table->refs[i] &&
361 (vlan == (MLX4_VLAN_MASK &
362 be32_to_cpu(table->entries[i])))) {
363 /* Vlan already registered, increase refernce count */
375 if (table->total == table->max) {
376 /* No free vlan entries */
381 /* Register new MAC */
382 table->refs[free] = 1;
383 table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
385 err = mlx4_set_port_vlan_table(dev, port, table->entries);
387 mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
388 table->refs[free] = 0;
389 table->entries[free] = 0;
396 mutex_unlock(&table->mutex);
399 EXPORT_SYMBOL_GPL(mlx4_register_vlan);
401 void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
403 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
405 if (index < MLX4_VLAN_REGULAR) {
406 mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
410 mutex_lock(&table->mutex);
411 if (!table->refs[index]) {
412 mlx4_warn(dev, "No vlan entry for index %d\n", index);
415 if (--table->refs[index]) {
416 mlx4_dbg(dev, "Have more references for index %d,"
417 "no need to modify vlan table\n", index);
420 table->entries[index] = 0;
421 mlx4_set_port_vlan_table(dev, port, table->entries);
424 mutex_unlock(&table->mutex);
426 EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
428 int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps)
430 struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
434 inmailbox = mlx4_alloc_cmd_mailbox(dev);
435 if (IS_ERR(inmailbox))
436 return PTR_ERR(inmailbox);
438 outmailbox = mlx4_alloc_cmd_mailbox(dev);
439 if (IS_ERR(outmailbox)) {
440 mlx4_free_cmd_mailbox(dev, inmailbox);
441 return PTR_ERR(outmailbox);
444 inbuf = inmailbox->buf;
445 outbuf = outmailbox->buf;
446 memset(inbuf, 0, 256);
447 memset(outbuf, 0, 256);
452 *(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015);
453 *(__be32 *) (&inbuf[20]) = cpu_to_be32(port);
455 err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
456 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C);
458 *caps = *(__be32 *) (outbuf + 84);
459 mlx4_free_cmd_mailbox(dev, inmailbox);
460 mlx4_free_cmd_mailbox(dev, outmailbox);
464 int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
466 struct mlx4_cmd_mailbox *mailbox;
469 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
472 mailbox = mlx4_alloc_cmd_mailbox(dev);
474 return PTR_ERR(mailbox);
476 memset(mailbox->buf, 0, 256);
478 ((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
479 err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
480 MLX4_CMD_TIME_CLASS_B);
482 mlx4_free_cmd_mailbox(dev, mailbox);