xref: /openbmc/linux/drivers/net/ethernet/ti/cpsw_ale.h (revision 20e2fc42)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Texas Instruments N-Port Ethernet Switch Address Lookup Engine APIs
4  *
5  * Copyright (C) 2012 Texas Instruments
6  *
7  */
8 #ifndef __TI_CPSW_ALE_H__
9 #define __TI_CPSW_ALE_H__
10 
11 struct cpsw_ale_params {
12 	struct device		*dev;
13 	void __iomem		*ale_regs;
14 	unsigned long		ale_ageout;	/* in secs */
15 	unsigned long		ale_entries;
16 	unsigned long		ale_ports;
17 	/* NU Switch has specific handling as number of bits in ALE entries
18 	 * are different than other versions of ALE. Also there are specific
19 	 * registers for unknown vlan specific fields. So use nu_switch_ale
20 	 * to identify this hardware.
21 	 */
22 	bool			nu_switch_ale;
23 	/* mask bit used in NU Switch ALE is 3 bits instead of 8 bits. So
24 	 * pass it from caller.
25 	 */
26 	u32			major_ver_mask;
27 };
28 
29 struct cpsw_ale {
30 	struct cpsw_ale_params	params;
31 	struct timer_list	timer;
32 	unsigned long		ageout;
33 	u32			version;
34 	/* These bits are different on NetCP NU Switch ALE */
35 	u32			port_mask_bits;
36 	u32			port_num_bits;
37 	u32			vlan_field_bits;
38 };
39 
40 enum cpsw_ale_control {
41 	/* global */
42 	ALE_ENABLE,
43 	ALE_CLEAR,
44 	ALE_AGEOUT,
45 	ALE_P0_UNI_FLOOD,
46 	ALE_VLAN_NOLEARN,
47 	ALE_NO_PORT_VLAN,
48 	ALE_OUI_DENY,
49 	ALE_BYPASS,
50 	ALE_RATE_LIMIT_TX,
51 	ALE_VLAN_AWARE,
52 	ALE_AUTH_ENABLE,
53 	ALE_RATE_LIMIT,
54 	/* port controls */
55 	ALE_PORT_STATE,
56 	ALE_PORT_DROP_UNTAGGED,
57 	ALE_PORT_DROP_UNKNOWN_VLAN,
58 	ALE_PORT_NOLEARN,
59 	ALE_PORT_NO_SA_UPDATE,
60 	ALE_PORT_UNKNOWN_VLAN_MEMBER,
61 	ALE_PORT_UNKNOWN_MCAST_FLOOD,
62 	ALE_PORT_UNKNOWN_REG_MCAST_FLOOD,
63 	ALE_PORT_UNTAGGED_EGRESS,
64 	ALE_PORT_BCAST_LIMIT,
65 	ALE_PORT_MCAST_LIMIT,
66 	ALE_NUM_CONTROLS,
67 };
68 
69 enum cpsw_ale_port_state {
70 	ALE_PORT_STATE_DISABLE	= 0x00,
71 	ALE_PORT_STATE_BLOCK	= 0x01,
72 	ALE_PORT_STATE_LEARN	= 0x02,
73 	ALE_PORT_STATE_FORWARD	= 0x03,
74 };
75 
76 /* ALE unicast entry flags - passed into cpsw_ale_add_ucast() */
77 #define ALE_SECURE			BIT(0)
78 #define ALE_BLOCKED			BIT(1)
79 #define ALE_SUPER			BIT(2)
80 #define ALE_VLAN			BIT(3)
81 
82 #define ALE_PORT_HOST			BIT(0)
83 #define ALE_PORT_1			BIT(1)
84 #define ALE_PORT_2			BIT(2)
85 
86 #define ALE_MCAST_FWD			0
87 #define ALE_MCAST_BLOCK_LEARN_FWD	1
88 #define ALE_MCAST_FWD_LEARN		2
89 #define ALE_MCAST_FWD_2			3
90 
91 #define ALE_ENTRY_BITS		68
92 #define ALE_ENTRY_WORDS	DIV_ROUND_UP(ALE_ENTRY_BITS, 32)
93 
94 struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params);
95 
96 void cpsw_ale_start(struct cpsw_ale *ale);
97 void cpsw_ale_stop(struct cpsw_ale *ale);
98 
99 int cpsw_ale_flush_multicast(struct cpsw_ale *ale, int port_mask, int vid);
100 int cpsw_ale_add_ucast(struct cpsw_ale *ale, const u8 *addr, int port,
101 		       int flags, u16 vid);
102 int cpsw_ale_del_ucast(struct cpsw_ale *ale, const u8 *addr, int port,
103 		       int flags, u16 vid);
104 int cpsw_ale_add_mcast(struct cpsw_ale *ale, const u8 *addr, int port_mask,
105 		       int flags, u16 vid, int mcast_state);
106 int cpsw_ale_del_mcast(struct cpsw_ale *ale, const u8 *addr, int port_mask,
107 		       int flags, u16 vid);
108 int cpsw_ale_add_vlan(struct cpsw_ale *ale, u16 vid, int port, int untag,
109 			int reg_mcast, int unreg_mcast);
110 int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port);
111 void cpsw_ale_set_allmulti(struct cpsw_ale *ale, int allmulti, int port);
112 
113 int cpsw_ale_control_get(struct cpsw_ale *ale, int port, int control);
114 int cpsw_ale_control_set(struct cpsw_ale *ale, int port,
115 			 int control, int value);
116 void cpsw_ale_dump(struct cpsw_ale *ale, u32 *data);
117 
118 #endif
119