[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / ethernet / mellanox / mlx4 / port.c

/*
 * 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) - MLX4_VLAN_REGULAR;
	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);

	if (table->total == table->max) {
		/* No free vlan entries */
		err = -ENOSPC;
		goto out;
	}

	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;
	}

	/* 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;
}
Commit	Line	Data
2a2336f8 YP	1	/*
	2	* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
	3	*
	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:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	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.
	22	*
	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
	30	* SOFTWARE.
	31	*/
	32
	33	#include <linux/errno.h>
	34	#include <linux/if_ether.h>
	35
	36	#include <linux/mlx4/cmd.h>
	37
	38	#include "mlx4.h"
	39
	40	#define MLX4_MAC_VALID (1ull << 63)
	41	#define MLX4_MAC_MASK 0xffffffffffffULL
	42
	43	#define MLX4_VLAN_VALID (1u << 31)
	44	#define MLX4_VLAN_MASK 0xfff
	45
	46	void mlx4_init_mac_table(struct mlx4_dev dev, struct mlx4_mac_table table)
	47	{
	48	int i;
	49
	50	mutex_init(&table->mutex);
	51	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
	52	table->entries[i] = 0;
	53	table->refs[i] = 0;
	54	}
	55	table->max = 1 << dev->caps.log_num_macs;
	56	table->total = 0;
	57	}
	58
	59	void mlx4_init_vlan_table(struct mlx4_dev dev, struct mlx4_vlan_table table)
	60	{
	61	int i;
	62
	63	mutex_init(&table->mutex);
	64	for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
65	table->entries[i] = 0;
66	table->refs[i] = 0;
67	}
e72ebf5a	68	table->max = (1 << dev->caps.log_num_vlans) - MLX4_VLAN_REGULAR;
2a2336f8 YP	69	table->total = 0;
	70	}
	71
	72	static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
	73	__be64 *entries)
	74	{
	75	struct mlx4_cmd_mailbox *mailbox;
	76	u32 in_mod;
	77	int err;
	78
	79	mailbox = mlx4_alloc_cmd_mailbox(dev);
	80	if (IS_ERR(mailbox))
	81	return PTR_ERR(mailbox);
	82
	83	memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
	84
	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);
	88
	89	mlx4_free_cmd_mailbox(dev, mailbox);
	90	return err;
	91	}
	92
1679200f YP	93	static int mlx4_uc_steer_add(struct mlx4_dev *dev, u8 port,
1679200f YP	94	u64 mac, int *qpn, u8 reserve)
2a2336f8	95	{
1679200f YP	96	struct mlx4_qp qp;
	97	u8 gid[16] = {0};
	98	int err;
	99
	100	if (reserve) {
	101	err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
	102	if (err) {
	103	mlx4_err(dev, "Failed to reserve qp for mac registration\n");
	104	return err;
	105	}
	106	}
	107	qp.qpn = *qpn;
	108
	109	mac &= 0xffffffffffffULL;
	110	mac = cpu_to_be64(mac << 16);
	111	memcpy(&gid[10], &mac, ETH_ALEN);
	112	gid[5] = port;
	113	gid[7] = MLX4_UC_STEER << 1;
	114
	115	err = mlx4_qp_attach_common(dev, &qp, gid, 0,
	116	MLX4_PROT_ETH, MLX4_UC_STEER);
	117	if (err && reserve)
	118	mlx4_qp_release_range(dev, *qpn, 1);
	119
	120	return err;
	121	}
	122
	123	static void mlx4_uc_steer_release(struct mlx4_dev *dev, u8 port,
	124	u64 mac, int qpn, u8 free)
	125	{
	126	struct mlx4_qp qp;
	127	u8 gid[16] = {0};
	128
	129	qp.qpn = qpn;
	130	mac &= 0xffffffffffffULL;
	131	mac = cpu_to_be64(mac << 16);
	132	memcpy(&gid[10], &mac, ETH_ALEN);
	133	gid[5] = port;
	134	gid[7] = MLX4_UC_STEER << 1;
	135
	136	mlx4_qp_detach_common(dev, &qp, gid, MLX4_PROT_ETH, MLX4_UC_STEER);
	137	if (free)
	138	mlx4_qp_release_range(dev, qpn, 1);
	139	}
	140
	141	int mlx4_register_mac(struct mlx4_dev dev, u8 port, u64 mac, int qpn, u8 wrap)
	142	{
	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;
2a2336f8 YP	146	int i, err = 0;
	147	int free = -1;
	148
ccf86321	149	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
1679200f YP	150	err = mlx4_uc_steer_add(dev, port, mac, qpn, 1);
	151	if (!err) {
	152	entry = kmalloc(sizeof *entry, GFP_KERNEL);
	153	if (!entry) {
	154	mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
	155	return -ENOMEM;
	156	}
	157	entry->mac = mac;
	158	err = radix_tree_insert(&info->mac_tree, *qpn, entry);
	159	if (err) {
	160	mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
	161	return err;
	162	}
	163	} else
	164	return err;
	165	}
2a2336f8 YP	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]) {
	170	free = i;
	171	continue;
	172	}
	173
	174	if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
25985edc	175	/* MAC already registered, increase references count */
2a2336f8 YP	176	++table->refs[i];
	177	goto out;
	178	}
	179	}
0926f910 EC	180
	181	if (free < 0) {
	182	err = -ENOMEM;
	183	goto out;
	184	}
	185
2a2336f8 YP	186	mlx4_dbg(dev, "Free MAC index is %d\n", free);
	187
	188	if (table->total == table->max) {
	189	/* No free mac entries */
	190	err = -ENOSPC;
	191	goto out;
	192	}
	193
	194	/* Register new MAC */
	195	table->refs[free] = 1;
	196	table->entries[free] = cpu_to_be64(mac \| MLX4_MAC_VALID);
	197
	198	err = mlx4_set_port_mac_table(dev, port, table->entries);
	199	if (unlikely(err)) {
	200	mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac);
	201	table->refs[free] = 0;
	202	table->entries[free] = 0;
	203	goto out;
	204	}
	205
ccf86321	206	if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
1679200f	207	*qpn = info->base_qpn + free;
2a2336f8 YP	208	++table->total;
	209	out:
	210	mutex_unlock(&table->mutex);
	211	return err;
	212	}
	213	EXPORT_SYMBOL_GPL(mlx4_register_mac);
	214
1679200f YP	215	static int validate_index(struct mlx4_dev *dev,
1679200f YP	216	struct mlx4_mac_table *table, int index)
2a2336f8	217	{
1679200f	218	int err = 0;
2a2336f8	219
1679200f YP	220	if (index < 0 \|\| index >= table->max \|\| !table->entries[index]) {
	221	mlx4_warn(dev, "No valid Mac entry for the given index\n");
	222	err = -EINVAL;
2a2336f8	223	}
1679200f YP	224	return err;
	225	}
	226
	227	static int find_index(struct mlx4_dev *dev,
	228	struct mlx4_mac_table *table, u64 mac)
	229	{
	230	int i;
	231	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
	232	if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
	233	return i;
	234	}
	235	/* Mac not found */
	236	return -EINVAL;
	237	}
	238
	239	void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int qpn)
	240	{
	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;
	245
ccf86321	246	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
1679200f YP	247	entry = radix_tree_lookup(&info->mac_tree, qpn);
	248	if (entry) {
	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);
	252	kfree(entry);
	253	}
2a2336f8	254	}
1679200f YP	255
	256	mutex_lock(&table->mutex);
	257
	258	if (validate_index(dev, table, index))
	259	goto out;
	260
20e72a44 YP	261	/* Check whether this address has reference count */
	262	if (!(--table->refs[index])) {
	263	table->entries[index] = 0;
	264	mlx4_set_port_mac_table(dev, port, table->entries);
	265	--table->total;
	266	}
2a2336f8 YP	267	out:
	268	mutex_unlock(&table->mutex);
	269	}
	270	EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
	271
1679200f YP	272	int mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac, u8 wrap)
	273	{
	274	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
	275	struct mlx4_mac_table *table = &info->mac_table;
	276	int index = qpn - info->base_qpn;
	277	struct mlx4_mac_entry *entry;
	278	int err;
	279
ccf86321	280	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
1679200f YP	281	entry = radix_tree_lookup(&info->mac_tree, qpn);
	282	if (!entry)
	283	return -EINVAL;
	284	index = find_index(dev, table, entry->mac);
	285	mlx4_uc_steer_release(dev, port, entry->mac, qpn, 0);
	286	entry->mac = new_mac;
	287	err = mlx4_uc_steer_add(dev, port, entry->mac, &qpn, 0);
	288	if (err \|\| index < 0)
	289	return err;
	290	}
	291
	292	mutex_lock(&table->mutex);
	293
	294	err = validate_index(dev, table, index);
	295	if (err)
	296	goto out;
	297
	298	table->entries[index] = cpu_to_be64(new_mac \| MLX4_MAC_VALID);
	299
	300	err = mlx4_set_port_mac_table(dev, port, table->entries);
	301	if (unlikely(err)) {
	302	mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) new_mac);
	303	table->entries[index] = 0;
	304	}
	305	out:
	306	mutex_unlock(&table->mutex);
	307	return err;
	308	}
	309	EXPORT_SYMBOL_GPL(mlx4_replace_mac);
2a2336f8 YP	310	static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
	311	__be32 *entries)
	312	{
	313	struct mlx4_cmd_mailbox *mailbox;
	314	u32 in_mod;
	315	int err;
	316
	317	mailbox = mlx4_alloc_cmd_mailbox(dev);
	318	if (IS_ERR(mailbox))
	319	return PTR_ERR(mailbox);
	320
	321	memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
	322	in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 \| port;
	323	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
	324	MLX4_CMD_TIME_CLASS_B);
	325
	326	mlx4_free_cmd_mailbox(dev, mailbox);
	327
	328	return err;
	329	}
	330
4c3eb3ca EC	331	int mlx4_find_cached_vlan(struct mlx4_dev dev, u8 port, u16 vid, int idx)
	332	{
	333	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
	334	int i;
	335
	336	for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
	337	if (table->refs[i] &&
	338	(vid == (MLX4_VLAN_MASK &
	339	be32_to_cpu(table->entries[i])))) {
	340	/* VLAN already registered, increase reference count */
	341	*idx = i;
	342	return 0;
	343	}
	344	}
	345
	346	return -ENOENT;
	347	}
	348	EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
	349
2a2336f8 YP	350	int mlx4_register_vlan(struct mlx4_dev dev, u8 port, u16 vlan, int index)
	351	{
	352	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
	353	int i, err = 0;
	354	int free = -1;
	355
	356	mutex_lock(&table->mutex);
e72ebf5a YP	357
	358	if (table->total == table->max) {
	359	/* No free vlan entries */
	360	err = -ENOSPC;
	361	goto out;
	362	}
	363
2a2336f8 YP	364	for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
	365	if (free < 0 && (table->refs[i] == 0)) {
	366	free = i;
	367	continue;
	368	}
	369
	370	if (table->refs[i] &&
	371	(vlan == (MLX4_VLAN_MASK &
	372	be32_to_cpu(table->entries[i])))) {
25985edc	373	/* Vlan already registered, increase references count */
2a2336f8 YP	374	*index = i;
	375	++table->refs[i];
	376	goto out;
	377	}
	378	}
	379
0926f910 EC	380	if (free < 0) {
	381	err = -ENOMEM;
	382	goto out;
	383	}
	384
2a2336f8 YP	385	/* Register new MAC */
	386	table->refs[free] = 1;
	387	table->entries[free] = cpu_to_be32(vlan \| MLX4_VLAN_VALID);
	388
	389	err = mlx4_set_port_vlan_table(dev, port, table->entries);
	390	if (unlikely(err)) {
	391	mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
	392	table->refs[free] = 0;
	393	table->entries[free] = 0;
	394	goto out;
	395	}
	396
	397	*index = free;
	398	++table->total;
	399	out:
	400	mutex_unlock(&table->mutex);
	401	return err;
	402	}
	403	EXPORT_SYMBOL_GPL(mlx4_register_vlan);
	404
	405	void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
	406	{
	407	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
	408
	409	if (index < MLX4_VLAN_REGULAR) {
	410	mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
	411	return;
	412	}
	413
	414	mutex_lock(&table->mutex);
	415	if (!table->refs[index]) {
	416	mlx4_warn(dev, "No vlan entry for index %d\n", index);
	417	goto out;
	418	}
	419	if (--table->refs[index]) {
	420	mlx4_dbg(dev, "Have more references for index %d,"
	421	"no need to modify vlan table\n", index);
	422	goto out;
	423	}
	424	table->entries[index] = 0;
	425	mlx4_set_port_vlan_table(dev, port, table->entries);
	426	--table->total;
	427	out:
	428	mutex_unlock(&table->mutex);
	429	}
	430	EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
7ff93f8b	431
9a5aa622 JM	432	int mlx4_get_port_ib_caps(struct mlx4_dev dev, u8 port, __be32 caps)
	433	{
	434	struct mlx4_cmd_mailbox inmailbox, outmailbox;
	435	u8 inbuf, outbuf;
	436	int err;
	437
	438	inmailbox = mlx4_alloc_cmd_mailbox(dev);
	439	if (IS_ERR(inmailbox))
	440	return PTR_ERR(inmailbox);
	441
	442	outmailbox = mlx4_alloc_cmd_mailbox(dev);
	443	if (IS_ERR(outmailbox)) {
	444	mlx4_free_cmd_mailbox(dev, inmailbox);
	445	return PTR_ERR(outmailbox);
	446	}
	447
	448	inbuf = inmailbox->buf;
	449	outbuf = outmailbox->buf;
	450	memset(inbuf, 0, 256);
	451	memset(outbuf, 0, 256);
	452	inbuf[0] = 1;
	453	inbuf[1] = 1;
	454	inbuf[2] = 1;
	455	inbuf[3] = 1;
	456	(__be16 ) (&inbuf[16]) = cpu_to_be16(0x0015);
	457	(__be32 ) (&inbuf[20]) = cpu_to_be32(port);
	458
	459	err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
	460	MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C);
	461	if (!err)
	462	caps = (__be32 *) (outbuf + 84);
	463	mlx4_free_cmd_mailbox(dev, inmailbox);
	464	mlx4_free_cmd_mailbox(dev, outmailbox);
	465	return err;
	466	}
	467
7ff93f8b YP	468	int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
	469	{
	470	struct mlx4_cmd_mailbox *mailbox;
	471	int err;
7ff93f8b	472
352b09ed RD	473	if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
	474	return 0;
	475
7ff93f8b YP	476	mailbox = mlx4_alloc_cmd_mailbox(dev);
	477	if (IS_ERR(mailbox))
	478	return PTR_ERR(mailbox);
	479
	480	memset(mailbox->buf, 0, 256);
793730bf YP	481
	482	((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
	483	err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
7ff93f8b YP	484	MLX4_CMD_TIME_CLASS_B);
	485
	486	mlx4_free_cmd_mailbox(dev, mailbox);
	487	return err;
	488	}