| /* |
| * Copyright (c) 2007 Mellanox Technologies. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <linux/errno.h> |
| #include <linux/if_ether.h> |
| |
| #include <linux/mlx4/cmd.h> |
| |
| #include "mlx4.h" |
| |
| #define MLX4_MAC_VALID (1ull << 63) |
| #define MLX4_MAC_MASK 0xffffffffffffULL |
| |
| #define MLX4_VLAN_VALID (1u << 31) |
| #define MLX4_VLAN_MASK 0xfff |
| |
| void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table) |
| { |
| int i; |
| |
| mutex_init(&table->mutex); |
| for (i = 0; i < MLX4_MAX_MAC_NUM; i++) { |
| table->entries[i] = 0; |
| table->refs[i] = 0; |
| } |
| table->max = 1 << dev->caps.log_num_macs; |
| table->total = 0; |
| } |
| |
| void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table) |
| { |
| int i; |
| |
| mutex_init(&table->mutex); |
| for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) { |
| table->entries[i] = 0; |
| table->refs[i] = 0; |
| } |
| table->max = 1 << dev->caps.log_num_vlans; |
| table->total = 0; |
| } |
| |
| static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port, |
| __be64 *entries) |
| { |
| struct mlx4_cmd_mailbox *mailbox; |
| u32 in_mod; |
| int err; |
| |
| mailbox = mlx4_alloc_cmd_mailbox(dev); |
| if (IS_ERR(mailbox)) |
| return PTR_ERR(mailbox); |
| |
| memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE); |
| |
| in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port; |
| err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT, |
| MLX4_CMD_TIME_CLASS_B); |
| |
| mlx4_free_cmd_mailbox(dev, mailbox); |
| return err; |
| } |
| |
| int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index) |
| { |
| struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table; |
| int i, err = 0; |
| int free = -1; |
| |
| mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac); |
| mutex_lock(&table->mutex); |
| for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) { |
| if (free < 0 && !table->refs[i]) { |
| free = i; |
| continue; |
| } |
| |
| if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) { |
| /* MAC already registered, increase refernce count */ |
| *index = i; |
| ++table->refs[i]; |
| goto out; |
| } |
| } |
| |
| if (free < 0) { |
| err = -ENOMEM; |
| goto out; |
| } |
| |
| mlx4_dbg(dev, "Free MAC index is %d\n", free); |
| |
| if (table->total == table->max) { |
| /* No free mac entries */ |
| err = -ENOSPC; |
| goto out; |
| } |
| |
| /* Register new MAC */ |
| table->refs[free] = 1; |
| table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID); |
| |
| err = mlx4_set_port_mac_table(dev, port, table->entries); |
| if (unlikely(err)) { |
| mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac); |
| table->refs[free] = 0; |
| table->entries[free] = 0; |
| goto out; |
| } |
| |
| *index = free; |
| ++table->total; |
| out: |
| mutex_unlock(&table->mutex); |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(mlx4_register_mac); |
| |
| void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index) |
| { |
| struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table; |
| |
| mutex_lock(&table->mutex); |
| if (!table->refs[index]) { |
| mlx4_warn(dev, "No MAC entry for index %d\n", index); |
| goto out; |
| } |
| if (--table->refs[index]) { |
| mlx4_warn(dev, "Have more references for index %d," |
| "no need to modify MAC table\n", index); |
| goto out; |
| } |
| table->entries[index] = 0; |
| mlx4_set_port_mac_table(dev, port, table->entries); |
| --table->total; |
| out: |
| mutex_unlock(&table->mutex); |
| } |
| EXPORT_SYMBOL_GPL(mlx4_unregister_mac); |
| |
| static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port, |
| __be32 *entries) |
| { |
| struct mlx4_cmd_mailbox *mailbox; |
| u32 in_mod; |
| int err; |
| |
| mailbox = mlx4_alloc_cmd_mailbox(dev); |
| if (IS_ERR(mailbox)) |
| return PTR_ERR(mailbox); |
| |
| memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE); |
| in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port; |
| err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT, |
| MLX4_CMD_TIME_CLASS_B); |
| |
| mlx4_free_cmd_mailbox(dev, mailbox); |
| |
| return err; |
| } |
| |
| int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index) |
| { |
| struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table; |
| int i, err = 0; |
| int free = -1; |
| |
| mutex_lock(&table->mutex); |
| for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) { |
| if (free < 0 && (table->refs[i] == 0)) { |
| free = i; |
| continue; |
| } |
| |
| if (table->refs[i] && |
| (vlan == (MLX4_VLAN_MASK & |
| be32_to_cpu(table->entries[i])))) { |
| /* Vlan already registered, increase refernce count */ |
| *index = i; |
| ++table->refs[i]; |
| goto out; |
| } |
| } |
| |
| if (free < 0) { |
| err = -ENOMEM; |
| goto out; |
| } |
| |
| if (table->total == table->max) { |
| /* No free vlan entries */ |
| err = -ENOSPC; |
| goto out; |
| } |
| |
| /* Register new MAC */ |
| table->refs[free] = 1; |
| table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID); |
| |
| err = mlx4_set_port_vlan_table(dev, port, table->entries); |
| if (unlikely(err)) { |
| mlx4_warn(dev, "Failed adding vlan: %u\n", vlan); |
| table->refs[free] = 0; |
| table->entries[free] = 0; |
| goto out; |
| } |
| |
| *index = free; |
| ++table->total; |
| out: |
| mutex_unlock(&table->mutex); |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(mlx4_register_vlan); |
| |
| void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index) |
| { |
| struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table; |
| |
| if (index < MLX4_VLAN_REGULAR) { |
| mlx4_warn(dev, "Trying to free special vlan index %d\n", index); |
| return; |
| } |
| |
| mutex_lock(&table->mutex); |
| if (!table->refs[index]) { |
| mlx4_warn(dev, "No vlan entry for index %d\n", index); |
| goto out; |
| } |
| if (--table->refs[index]) { |
| mlx4_dbg(dev, "Have more references for index %d," |
| "no need to modify vlan table\n", index); |
| goto out; |
| } |
| table->entries[index] = 0; |
| mlx4_set_port_vlan_table(dev, port, table->entries); |
| --table->total; |
| out: |
| mutex_unlock(&table->mutex); |
| } |
| EXPORT_SYMBOL_GPL(mlx4_unregister_vlan); |
| |
| int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps) |
| { |
| struct mlx4_cmd_mailbox *inmailbox, *outmailbox; |
| u8 *inbuf, *outbuf; |
| int err; |
| |
| inmailbox = mlx4_alloc_cmd_mailbox(dev); |
| if (IS_ERR(inmailbox)) |
| return PTR_ERR(inmailbox); |
| |
| outmailbox = mlx4_alloc_cmd_mailbox(dev); |
| if (IS_ERR(outmailbox)) { |
| mlx4_free_cmd_mailbox(dev, inmailbox); |
| return PTR_ERR(outmailbox); |
| } |
| |
| inbuf = inmailbox->buf; |
| outbuf = outmailbox->buf; |
| memset(inbuf, 0, 256); |
| memset(outbuf, 0, 256); |
| inbuf[0] = 1; |
| inbuf[1] = 1; |
| inbuf[2] = 1; |
| inbuf[3] = 1; |
| *(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015); |
| *(__be32 *) (&inbuf[20]) = cpu_to_be32(port); |
| |
| err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3, |
| MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C); |
| if (!err) |
| *caps = *(__be32 *) (outbuf + 84); |
| mlx4_free_cmd_mailbox(dev, inmailbox); |
| mlx4_free_cmd_mailbox(dev, outmailbox); |
| return err; |
| } |
| |
| int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port) |
| { |
| struct mlx4_cmd_mailbox *mailbox; |
| int err; |
| |
| if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) |
| return 0; |
| |
| mailbox = mlx4_alloc_cmd_mailbox(dev); |
| if (IS_ERR(mailbox)) |
| return PTR_ERR(mailbox); |
| |
| memset(mailbox->buf, 0, 256); |
| |
| ((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port]; |
| err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT, |
| MLX4_CMD_TIME_CLASS_B); |
| |
| mlx4_free_cmd_mailbox(dev, mailbox); |
| return err; |
| } |