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netdev: driver: ethernet: add cpsw address lookup engine support

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TI CPSW ethernet switch has a built-in address lookup engine.  This patch adds
the code necessary for programming this module.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mugunthan V N
2012-03-18 20:17:53 +00:00
committed by David S. Miller
parent 49099122a4
commit db82173f23
2 changed files with 734 additions and 0 deletions
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641
drivers/net/ethernet/ti/cpsw_ale.c Normal file
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93
drivers/net/ethernet/ti/cpsw_ale.h Normal file
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/*
* Texas Instruments 3-Port Ethernet Switch Address Lookup Engine APIs
*
* Copyright (C) 2012 Texas Instruments
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __TI_CPSW_ALE_H__
#define __TI_CPSW_ALE_H__
struct cpsw_ale_params {
struct device *dev;
void __iomem *ale_regs;
unsigned long ale_ageout; /* in secs */
unsigned long ale_entries;
unsigned long ale_ports;
};
struct cpsw_ale {
struct cpsw_ale_params params;
struct timer_list timer;
unsigned long ageout;
};
enum cpsw_ale_control {
/* global */
ALE_ENABLE,
ALE_CLEAR,
ALE_AGEOUT,
ALE_VLAN_NOLEARN,
ALE_NO_PORT_VLAN,
ALE_OUI_DENY,
ALE_BYPASS,
ALE_RATE_LIMIT_TX,
ALE_VLAN_AWARE,
ALE_AUTH_ENABLE,
ALE_RATE_LIMIT,
/* port controls */
ALE_PORT_STATE,
ALE_PORT_DROP_UNTAGGED,
ALE_PORT_DROP_UNKNOWN_VLAN,
ALE_PORT_NOLEARN,
ALE_PORT_UNKNOWN_VLAN_MEMBER,
ALE_PORT_UNKNOWN_MCAST_FLOOD,
ALE_PORT_UNKNOWN_REG_MCAST_FLOOD,
ALE_PORT_UNTAGGED_EGRESS,
ALE_PORT_BCAST_LIMIT,
ALE_PORT_MCAST_LIMIT,
ALE_NUM_CONTROLS,
};
enum cpsw_ale_port_state {
ALE_PORT_STATE_DISABLE = 0x00,
ALE_PORT_STATE_BLOCK = 0x01,
ALE_PORT_STATE_LEARN = 0x02,
ALE_PORT_STATE_FORWARD = 0x03,
};
/* ALE unicast entry flags - passed into cpsw_ale_add_ucast() */
#define ALE_SECURE 1
#define ALE_BLOCKED 2
#define ALE_MCAST_FWD 0
#define ALE_MCAST_BLOCK_LEARN_FWD 1
#define ALE_MCAST_FWD_LEARN 2
#define ALE_MCAST_FWD_2 3
struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params);
int cpsw_ale_destroy(struct cpsw_ale *ale);
void cpsw_ale_start(struct cpsw_ale *ale);
void cpsw_ale_stop(struct cpsw_ale *ale);
int cpsw_ale_set_ageout(struct cpsw_ale *ale, int ageout);
int cpsw_ale_flush(struct cpsw_ale *ale, int port_mask);
int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port, int flags);
int cpsw_ale_del_ucast(struct cpsw_ale *ale, u8 *addr, int port);
int cpsw_ale_add_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
int super, int mcast_state);
int cpsw_ale_del_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask);
int cpsw_ale_control_get(struct cpsw_ale *ale, int port, int control);
int cpsw_ale_control_set(struct cpsw_ale *ale, int port,
int control, int value);
#endif