xref: /openbmc/linux/drivers/net/ethernet/ti/cpsw_ale.h (revision 5d0e4d78)
1 /*
2  * Texas Instruments N-Port Ethernet Switch Address Lookup Engine APIs
3  *
4  * Copyright (C) 2012 Texas Instruments
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation version 2.
9  *
10  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11  * kind, whether express or implied; without even the implied warranty
12  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  */
15 #ifndef __TI_CPSW_ALE_H__
16 #define __TI_CPSW_ALE_H__
17 
18 struct cpsw_ale_params {
19 	struct device		*dev;
20 	void __iomem		*ale_regs;
21 	unsigned long		ale_ageout;	/* in secs */
22 	unsigned long		ale_entries;
23 	unsigned long		ale_ports;
24 	/* NU Switch has specific handling as number of bits in ALE entries
25 	 * are different than other versions of ALE. Also there are specific
26 	 * registers for unknown vlan specific fields. So use nu_switch_ale
27 	 * to identify this hardware.
28 	 */
29 	bool			nu_switch_ale;
30 	/* mask bit used in NU Switch ALE is 3 bits instead of 8 bits. So
31 	 * pass it from caller.
32 	 */
33 	u32			major_ver_mask;
34 };
35 
36 struct cpsw_ale {
37 	struct cpsw_ale_params	params;
38 	struct timer_list	timer;
39 	unsigned long		ageout;
40 	int			allmulti;
41 	u32			version;
42 	/* These bits are different on NetCP NU Switch ALE */
43 	u32			port_mask_bits;
44 	u32			port_num_bits;
45 	u32			vlan_field_bits;
46 };
47 
48 enum cpsw_ale_control {
49 	/* global */
50 	ALE_ENABLE,
51 	ALE_CLEAR,
52 	ALE_AGEOUT,
53 	ALE_P0_UNI_FLOOD,
54 	ALE_VLAN_NOLEARN,
55 	ALE_NO_PORT_VLAN,
56 	ALE_OUI_DENY,
57 	ALE_BYPASS,
58 	ALE_RATE_LIMIT_TX,
59 	ALE_VLAN_AWARE,
60 	ALE_AUTH_ENABLE,
61 	ALE_RATE_LIMIT,
62 	/* port controls */
63 	ALE_PORT_STATE,
64 	ALE_PORT_DROP_UNTAGGED,
65 	ALE_PORT_DROP_UNKNOWN_VLAN,
66 	ALE_PORT_NOLEARN,
67 	ALE_PORT_NO_SA_UPDATE,
68 	ALE_PORT_UNKNOWN_VLAN_MEMBER,
69 	ALE_PORT_UNKNOWN_MCAST_FLOOD,
70 	ALE_PORT_UNKNOWN_REG_MCAST_FLOOD,
71 	ALE_PORT_UNTAGGED_EGRESS,
72 	ALE_PORT_BCAST_LIMIT,
73 	ALE_PORT_MCAST_LIMIT,
74 	ALE_NUM_CONTROLS,
75 };
76 
77 enum cpsw_ale_port_state {
78 	ALE_PORT_STATE_DISABLE	= 0x00,
79 	ALE_PORT_STATE_BLOCK	= 0x01,
80 	ALE_PORT_STATE_LEARN	= 0x02,
81 	ALE_PORT_STATE_FORWARD	= 0x03,
82 };
83 
84 /* ALE unicast entry flags - passed into cpsw_ale_add_ucast() */
85 #define ALE_SECURE			BIT(0)
86 #define ALE_BLOCKED			BIT(1)
87 #define ALE_SUPER			BIT(2)
88 #define ALE_VLAN			BIT(3)
89 
90 #define ALE_PORT_HOST			BIT(0)
91 #define ALE_PORT_1			BIT(1)
92 #define ALE_PORT_2			BIT(2)
93 
94 #define ALE_MCAST_FWD			0
95 #define ALE_MCAST_BLOCK_LEARN_FWD	1
96 #define ALE_MCAST_FWD_LEARN		2
97 #define ALE_MCAST_FWD_2			3
98 
99 #define ALE_ENTRY_BITS		68
100 #define ALE_ENTRY_WORDS	DIV_ROUND_UP(ALE_ENTRY_BITS, 32)
101 
102 struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params);
103 int cpsw_ale_destroy(struct cpsw_ale *ale);
104 
105 void cpsw_ale_start(struct cpsw_ale *ale);
106 void cpsw_ale_stop(struct cpsw_ale *ale);
107 
108 int cpsw_ale_flush_multicast(struct cpsw_ale *ale, int port_mask, int vid);
109 int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port,
110 		       int flags, u16 vid);
111 int cpsw_ale_del_ucast(struct cpsw_ale *ale, u8 *addr, int port,
112 		       int flags, u16 vid);
113 int cpsw_ale_add_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
114 		       int flags, u16 vid, int mcast_state);
115 int cpsw_ale_del_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
116 		       int flags, u16 vid);
117 int cpsw_ale_add_vlan(struct cpsw_ale *ale, u16 vid, int port, int untag,
118 			int reg_mcast, int unreg_mcast);
119 int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port);
120 void cpsw_ale_set_allmulti(struct cpsw_ale *ale, int allmulti);
121 
122 int cpsw_ale_control_get(struct cpsw_ale *ale, int port, int control);
123 int cpsw_ale_control_set(struct cpsw_ale *ale, int port,
124 			 int control, int value);
125 void cpsw_ale_dump(struct cpsw_ale *ale, u32 *data);
126 
127 #endif
128