Added missing tegra files.HEADmaster

1 files changed, 487 insertions, 0 deletions

diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c
new file mode 100644
index 00000000000..609e0ec14ce
--- /dev/null
+++ b/drivers/net/mlx4/port.c
@@ -0,0 +1,487 @@
+/*
+ * 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;
+}
+
+static int mlx4_uc_steer_add(struct mlx4_dev *dev, u8 port,
+                             u64 mac, int *qpn, u8 reserve)
+{
+        struct mlx4_qp qp;
+        u8 gid[16] = {0};
+        int err;
+
+        if (reserve) {
+                err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
+                if (err) {
+                        mlx4_err(dev, "Failed to reserve qp for mac registration\n");
+                        return err;
+                }
+        }
+        qp.qpn = *qpn;
+
+        mac &= 0xffffffffffffULL;
+        mac = cpu_to_be64(mac << 16);
+        memcpy(&gid[10], &mac, ETH_ALEN);
+        gid[5] = port;
+        gid[7] = MLX4_UC_STEER << 1;
+
+        err = mlx4_qp_attach_common(dev, &qp, gid, 0,
+                                    MLX4_PROT_ETH, MLX4_UC_STEER);
+        if (err && reserve)
+                mlx4_qp_release_range(dev, *qpn, 1);
+
+        return err;
+}
+
+static void mlx4_uc_steer_release(struct mlx4_dev *dev, u8 port,
+                                  u64 mac, int qpn, u8 free)
+{
+        struct mlx4_qp qp;
+        u8 gid[16] = {0};
+
+        qp.qpn = qpn;
+        mac &= 0xffffffffffffULL;
+        mac = cpu_to_be64(mac << 16);
+        memcpy(&gid[10], &mac, ETH_ALEN);
+        gid[5] = port;
+        gid[7] = MLX4_UC_STEER << 1;
+
+        mlx4_qp_detach_common(dev, &qp, gid, MLX4_PROT_ETH, MLX4_UC_STEER);
+        if (free)
+                mlx4_qp_release_range(dev, qpn, 1);
+}
+
+int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *qpn, u8 wrap)
+{
+        struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
+        struct mlx4_mac_table *table = &info->mac_table;
+        struct mlx4_mac_entry *entry;
+        int i, err = 0;
+        int free = -1;
+
+        if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
+                err = mlx4_uc_steer_add(dev, port, mac, qpn, 1);
+                if (!err) {
+                        entry = kmalloc(sizeof *entry, GFP_KERNEL);
+                        if (!entry) {
+                                mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
+                                return -ENOMEM;
+                        }
+                        entry->mac = mac;
+                        err = radix_tree_insert(&info->mac_tree, *qpn, entry);
+                        if (err) {
+                                mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
+                                return err;
+                        }
+                } else
+                        return err;
+        }
+        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 references count */
+                        ++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;
+        }
+
+        if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
+                *qpn = info->base_qpn + free;
+        ++table->total;
+out:
+        mutex_unlock(&table->mutex);
+        return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_register_mac);
+
+static int validate_index(struct mlx4_dev *dev,
+                          struct mlx4_mac_table *table, int index)
+{
+        int err = 0;
+
+        if (index < 0 || index >= table->max || !table->entries[index]) {
+                mlx4_warn(dev, "No valid Mac entry for the given index\n");
+                err = -EINVAL;
+        }
+        return err;
+}
+
+static int find_index(struct mlx4_dev *dev,
+                      struct mlx4_mac_table *table, u64 mac)
+{
+        int i;
+        for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
+                if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
+                        return i;
+        }
+        /* Mac not found */
+        return -EINVAL;
+}
+
+void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int qpn)
+{
+        struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
+        struct mlx4_mac_table *table = &info->mac_table;
+        int index = qpn - info->base_qpn;
+        struct mlx4_mac_entry *entry;
+
+        if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
+                entry = radix_tree_lookup(&info->mac_tree, qpn);
+                if (entry) {
+                        mlx4_uc_steer_release(dev, port, entry->mac, qpn, 1);
+                        radix_tree_delete(&info->mac_tree, qpn);
+                        index = find_index(dev, table, entry->mac);
+                        kfree(entry);
+                }
+        }
+
+        mutex_lock(&table->mutex);
+
+        if (validate_index(dev, table, index))
+                goto out;
+
+        /* Check whether this address has reference count */
+        if (!(--table->refs[index])) {
+                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);
+
+int mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac, u8 wrap)
+{
+        struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
+        struct mlx4_mac_table *table = &info->mac_table;
+        int index = qpn - info->base_qpn;
+        struct mlx4_mac_entry *entry;
+        int err;
+
+        if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
+                entry = radix_tree_lookup(&info->mac_tree, qpn);
+                if (!entry)
+                        return -EINVAL;
+                index = find_index(dev, table, entry->mac);
+                mlx4_uc_steer_release(dev, port, entry->mac, qpn, 0);
+                entry->mac = new_mac;
+                err = mlx4_uc_steer_add(dev, port, entry->mac, &qpn, 0);
+                if (err || index < 0)
+                        return err;
+        }
+
+        mutex_lock(&table->mutex);
+
+        err = validate_index(dev, table, index);
+        if (err)
+                goto out;
+
+        table->entries[index] = cpu_to_be64(new_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) new_mac);
+                table->entries[index] = 0;
+        }
+out:
+        mutex_unlock(&table->mutex);
+        return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_replace_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_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
+{
+        struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
+        int i;
+
+        for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
+                if (table->refs[i] &&
+                    (vid == (MLX4_VLAN_MASK &
+                              be32_to_cpu(table->entries[i])))) {
+                        /* VLAN already registered, increase reference count */
+                        *idx = i;
+                        return 0;
+                }
+        }
+
+        return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
+
+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 references 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;
+}